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update vendor packages for winrm from upstream

This commit is contained in:
Eike Verdenhalven 2017-01-18 22:03:02 +01:00
parent 0a46d883df
commit 525d7c946e
42 changed files with 13681 additions and 95 deletions
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202
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Apache License
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http://www.apache.org/licenses/
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The wire protocol for HTTP's "chunked" Transfer-Encoding.
// This code is duplicated in net/http and net/http/httputil.
// Please make any changes in both files.
package http
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
)
const maxLineLength = 4096 // assumed <= bufio.defaultBufSize
var ErrLineTooLong = errors.New("header line too long")
// newChunkedReader returns a new chunkedReader that translates the data read from r
// out of HTTP "chunked" format before returning it.
// The chunkedReader returns io.EOF when the final 0-length chunk is read.
//
// newChunkedReader is not needed by normal applications. The http package
// automatically decodes chunking when reading response bodies.
func newChunkedReader(r io.Reader) io.Reader {
br, ok := r.(*bufio.Reader)
if !ok {
br = bufio.NewReader(r)
}
return &chunkedReader{r: br}
}
type chunkedReader struct {
r *bufio.Reader
n uint64 // unread bytes in chunk
err error
buf [2]byte
}
func (cr *chunkedReader) beginChunk() {
// chunk-size CRLF
var line []byte
line, cr.err = readLine(cr.r)
if cr.err != nil {
return
}
cr.n, cr.err = parseHexUint(line)
if cr.err != nil {
return
}
if cr.n == 0 {
cr.err = io.EOF
}
}
func (cr *chunkedReader) chunkHeaderAvailable() bool {
n := cr.r.Buffered()
if n > 0 {
peek, _ := cr.r.Peek(n)
return bytes.IndexByte(peek, '\n') >= 0
}
return false
}
func (cr *chunkedReader) Read(b []uint8) (n int, err error) {
for cr.err == nil {
if cr.n == 0 {
if n > 0 && !cr.chunkHeaderAvailable() {
// We've read enough. Don't potentially block
// reading a new chunk header.
break
}
cr.beginChunk()
continue
}
if len(b) == 0 {
break
}
rbuf := b
if uint64(len(rbuf)) > cr.n {
rbuf = rbuf[:cr.n]
}
var n0 int
n0, cr.err = cr.r.Read(rbuf)
n += n0
b = b[n0:]
cr.n -= uint64(n0)
// If we're at the end of a chunk, read the next two
// bytes to verify they are "\r\n".
if cr.n == 0 && cr.err == nil {
if _, cr.err = io.ReadFull(cr.r, cr.buf[:2]); cr.err == nil {
if cr.buf[0] != '\r' || cr.buf[1] != '\n' {
cr.err = errors.New("malformed chunked encoding")
}
}
}
}
return n, cr.err
}
// Read a line of bytes (up to \n) from b.
// Give up if the line exceeds maxLineLength.
// The returned bytes are a pointer into storage in
// the bufio, so they are only valid until the next bufio read.
func readLine(b *bufio.Reader) (p []byte, err error) {
if p, err = b.ReadSlice('\n'); err != nil {
// We always know when EOF is coming.
// If the caller asked for a line, there should be a line.
if err == io.EOF {
err = io.ErrUnexpectedEOF
} else if err == bufio.ErrBufferFull {
err = ErrLineTooLong
}
return nil, err
}
if len(p) >= maxLineLength {
return nil, ErrLineTooLong
}
return trimTrailingWhitespace(p), nil
}
func trimTrailingWhitespace(b []byte) []byte {
for len(b) > 0 && isASCIISpace(b[len(b)-1]) {
b = b[:len(b)-1]
}
return b
}
func isASCIISpace(b byte) bool {
return b == ' ' || b == '\t' || b == '\n' || b == '\r'
}
// newChunkedWriter returns a new chunkedWriter that translates writes into HTTP
// "chunked" format before writing them to w. Closing the returned chunkedWriter
// sends the final 0-length chunk that marks the end of the stream.
//
// newChunkedWriter is not needed by normal applications. The http
// package adds chunking automatically if handlers don't set a
// Content-Length header. Using newChunkedWriter inside a handler
// would result in double chunking or chunking with a Content-Length
// length, both of which are wrong.
func newChunkedWriter(w io.Writer) io.WriteCloser {
return &chunkedWriter{w}
}
// Writing to chunkedWriter translates to writing in HTTP chunked Transfer
// Encoding wire format to the underlying Wire chunkedWriter.
type chunkedWriter struct {
Wire io.Writer
}
// Write the contents of data as one chunk to Wire.
// NOTE: Note that the corresponding chunk-writing procedure in Conn.Write has
// a bug since it does not check for success of io.WriteString
func (cw *chunkedWriter) Write(data []byte) (n int, err error) {
// Don't send 0-length data. It looks like EOF for chunked encoding.
if len(data) == 0 {
return 0, nil
}
if _, err = fmt.Fprintf(cw.Wire, "%x\r\n", len(data)); err != nil {
return 0, err
}
if n, err = cw.Wire.Write(data); err != nil {
return
}
if n != len(data) {
err = io.ErrShortWrite
return
}
_, err = io.WriteString(cw.Wire, "\r\n")
return
}
func (cw *chunkedWriter) Close() error {
_, err := io.WriteString(cw.Wire, "0\r\n")
return err
}
func parseHexUint(v []byte) (n uint64, err error) {
for _, b := range v {
n <<= 4
switch {
case '0' <= b && b <= '9':
b = b - '0'
case 'a' <= b && b <= 'f':
b = b - 'a' + 10
case 'A' <= b && b <= 'F':
b = b - 'A' + 10
default:
return 0, errors.New("invalid byte in chunk length")
}
n |= uint64(b)
}
return
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/client.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// HTTP client. See RFC 2616.
//
// This is the high-level Client interface.
// The low-level implementation is in transport.go.
package http
import (
"encoding/base64"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"net/url"
"strings"
"sync"
"time"
)
// A Client is an HTTP client. Its zero value (DefaultClient) is a
// usable client that uses DefaultTransport.
//
// The Client's Transport typically has internal state (cached TCP
// connections), so Clients should be reused instead of created as
// needed. Clients are safe for concurrent use by multiple goroutines.
//
// A Client is higher-level than a RoundTripper (such as Transport)
// and additionally handles HTTP details such as cookies and
// redirects.
type Client struct {
// Transport specifies the mechanism by which individual
// HTTP requests are made.
// If nil, DefaultTransport is used.
Transport RoundTripper
// CheckRedirect specifies the policy for handling redirects.
// If CheckRedirect is not nil, the client calls it before
// following an HTTP redirect. The arguments req and via are
// the upcoming request and the requests made already, oldest
// first. If CheckRedirect returns an error, the Client's Get
// method returns both the previous Response and
// CheckRedirect's error (wrapped in a url.Error) instead of
// issuing the Request req.
//
// If CheckRedirect is nil, the Client uses its default policy,
// which is to stop after 10 consecutive requests.
CheckRedirect func(req *Request, via []*Request) error
// Jar specifies the cookie jar.
// If Jar is nil, cookies are not sent in requests and ignored
// in responses.
Jar CookieJar
// Timeout specifies a time limit for requests made by this
// Client. The timeout includes connection time, any
// redirects, and reading the response body. The timer remains
// running after Get, Head, Post, or Do return and will
// interrupt reading of the Response.Body.
//
// A Timeout of zero means no timeout.
//
// The Client's Transport must support the CancelRequest
// method or Client will return errors when attempting to make
// a request with Get, Head, Post, or Do. Client's default
// Transport (DefaultTransport) supports CancelRequest.
Timeout time.Duration
}
// DefaultClient is the default Client and is used by Get, Head, and Post.
var DefaultClient = &Client{}
// RoundTripper is an interface representing the ability to execute a
// single HTTP transaction, obtaining the Response for a given Request.
//
// A RoundTripper must be safe for concurrent use by multiple
// goroutines.
type RoundTripper interface {
// RoundTrip executes a single HTTP transaction, returning
// the Response for the request req. RoundTrip should not
// attempt to interpret the response. In particular,
// RoundTrip must return err == nil if it obtained a response,
// regardless of the response's HTTP status code. A non-nil
// err should be reserved for failure to obtain a response.
// Similarly, RoundTrip should not attempt to handle
// higher-level protocol details such as redirects,
// authentication, or cookies.
//
// RoundTrip should not modify the request, except for
// consuming and closing the Body, including on errors. The
// request's URL and Header fields are guaranteed to be
// initialized.
RoundTrip(*Request) (*Response, error)
}
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
// return true if the string includes a port.
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
// Used in Send to implement io.ReadCloser by bundling together the
// bufio.Reader through which we read the response, and the underlying
// network connection.
type readClose struct {
io.Reader
io.Closer
}
func (c *Client) send(req *Request) (*Response, error) {
if c.Jar != nil {
for _, cookie := range c.Jar.Cookies(req.URL) {
req.AddCookie(cookie)
}
}
resp, err := send(req, c.transport())
if err != nil {
return nil, err
}
if c.Jar != nil {
if rc := resp.Cookies(); len(rc) > 0 {
c.Jar.SetCookies(req.URL, rc)
}
}
return resp, err
}
// Do sends an HTTP request and returns an HTTP response, following
// policy (e.g. redirects, cookies, auth) as configured on the client.
//
// An error is returned if caused by client policy (such as
// CheckRedirect), or if there was an HTTP protocol error.
// A non-2xx response doesn't cause an error.
//
// When err is nil, resp always contains a non-nil resp.Body.
//
// Callers should close resp.Body when done reading from it. If
// resp.Body is not closed, the Client's underlying RoundTripper
// (typically Transport) may not be able to re-use a persistent TCP
// connection to the server for a subsequent "keep-alive" request.
//
// The request Body, if non-nil, will be closed by the underlying
// Transport, even on errors.
//
// Generally Get, Post, or PostForm will be used instead of Do.
func (c *Client) Do(req *Request) (resp *Response, err error) {
if req.Method == "GET" || req.Method == "HEAD" {
return c.doFollowingRedirects(req, shouldRedirectGet)
}
if req.Method == "POST" || req.Method == "PUT" {
return c.doFollowingRedirects(req, shouldRedirectPost)
}
return c.send(req)
}
func (c *Client) transport() RoundTripper {
if c.Transport != nil {
return c.Transport
}
return DefaultTransport
}
// send issues an HTTP request.
// Caller should close resp.Body when done reading from it.
func send(req *Request, t RoundTripper) (resp *Response, err error) {
if t == nil {
req.closeBody()
return nil, errors.New("http: no Client.Transport or DefaultTransport")
}
if req.URL == nil {
req.closeBody()
return nil, errors.New("http: nil Request.URL")
}
if req.RequestURI != "" {
req.closeBody()
return nil, errors.New("http: Request.RequestURI can't be set in client requests.")
}
// Most the callers of send (Get, Post, et al) don't need
// Headers, leaving it uninitialized. We guarantee to the
// Transport that this has been initialized, though.
if req.Header == nil {
req.Header = make(Header)
}
if u := req.URL.User; u != nil {
username := u.Username()
password, _ := u.Password()
req.Header.Set("Authorization", "Basic "+basicAuth(username, password))
}
resp, err = t.RoundTrip(req)
if err != nil {
if resp != nil {
log.Printf("RoundTripper returned a response & error; ignoring response")
}
return nil, err
}
return resp, nil
}
// See 2 (end of page 4) http://www.ietf.org/rfc/rfc2617.txt
// "To receive authorization, the client sends the userid and password,
// separated by a single colon (":") character, within a base64
// encoded string in the credentials."
// It is not meant to be urlencoded.
func basicAuth(username, password string) string {
auth := username + ":" + password
return base64.StdEncoding.EncodeToString([]byte(auth))
}
// True if the specified HTTP status code is one for which the Get utility should
// automatically redirect.
func shouldRedirectGet(statusCode int) bool {
switch statusCode {
case StatusMovedPermanently, StatusFound, StatusSeeOther, StatusTemporaryRedirect:
return true
}
return false
}
// True if the specified HTTP status code is one for which the Post utility should
// automatically redirect.
func shouldRedirectPost(statusCode int) bool {
switch statusCode {
case StatusFound, StatusSeeOther:
return true
}
return false
}
// Get issues a GET to the specified URL. If the response is one of the following
// redirect codes, Get follows the redirect, up to a maximum of 10 redirects:
//
// 301 (Moved Permanently)
// 302 (Found)
// 303 (See Other)
// 307 (Temporary Redirect)
//
// An error is returned if there were too many redirects or if there
// was an HTTP protocol error. A non-2xx response doesn't cause an
// error.
//
// When err is nil, resp always contains a non-nil resp.Body.
// Caller should close resp.Body when done reading from it.
//
// Get is a wrapper around DefaultClient.Get.
func Get(url string) (resp *Response, err error) {
return DefaultClient.Get(url)
}
// Get issues a GET to the specified URL. If the response is one of the
// following redirect codes, Get follows the redirect after calling the
// Client's CheckRedirect function.
//
// 301 (Moved Permanently)
// 302 (Found)
// 303 (See Other)
// 307 (Temporary Redirect)
//
// An error is returned if the Client's CheckRedirect function fails
// or if there was an HTTP protocol error. A non-2xx response doesn't
// cause an error.
//
// When err is nil, resp always contains a non-nil resp.Body.
// Caller should close resp.Body when done reading from it.
func (c *Client) Get(url string) (resp *Response, err error) {
req, err := NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
return c.doFollowingRedirects(req, shouldRedirectGet)
}
func (c *Client) doFollowingRedirects(ireq *Request, shouldRedirect func(int) bool) (resp *Response, err error) {
var base *url.URL
redirectChecker := c.CheckRedirect
if redirectChecker == nil {
redirectChecker = defaultCheckRedirect
}
var via []*Request
if ireq.URL == nil {
ireq.closeBody()
return nil, errors.New("http: nil Request.URL")
}
var reqmu sync.Mutex // guards req
req := ireq
var timer *time.Timer
if c.Timeout > 0 {
type canceler interface {
CancelRequest(*Request)
}
tr, ok := c.transport().(canceler)
if !ok {
return nil, fmt.Errorf("net/http: Client Transport of type %T doesn't support CancelRequest; Timeout not supported", c.transport())
}
timer = time.AfterFunc(c.Timeout, func() {
reqmu.Lock()
defer reqmu.Unlock()
tr.CancelRequest(req)
})
}
urlStr := "" // next relative or absolute URL to fetch (after first request)
redirectFailed := false
for redirect := 0; ; redirect++ {
if redirect != 0 {
nreq := new(Request)
nreq.Method = ireq.Method
if ireq.Method == "POST" || ireq.Method == "PUT" {
nreq.Method = "GET"
}
nreq.Header = make(Header)
nreq.URL, err = base.Parse(urlStr)
if err != nil {
break
}
if len(via) > 0 {
// Add the Referer header.
lastReq := via[len(via)-1]
if lastReq.URL.Scheme != "https" {
nreq.Header.Set("Referer", lastReq.URL.String())
}
err = redirectChecker(nreq, via)
if err != nil {
redirectFailed = true
break
}
}
reqmu.Lock()
req = nreq
reqmu.Unlock()
}
urlStr = req.URL.String()
if resp, err = c.send(req); err != nil {
break
}
if shouldRedirect(resp.StatusCode) {
// Read the body if small so underlying TCP connection will be re-used.
// No need to check for errors: if it fails, Transport won't reuse it anyway.
const maxBodySlurpSize = 2 << 10
if resp.ContentLength == -1 || resp.ContentLength <= maxBodySlurpSize {
io.CopyN(ioutil.Discard, resp.Body, maxBodySlurpSize)
}
resp.Body.Close()
if urlStr = resp.Header.Get("Location"); urlStr == "" {
err = errors.New(fmt.Sprintf("%d response missing Location header", resp.StatusCode))
break
}
base = req.URL
via = append(via, req)
continue
}
if timer != nil {
resp.Body = &cancelTimerBody{timer, resp.Body}
}
return resp, nil
}
method := ireq.Method
urlErr := &url.Error{
Op: method[0:1] + strings.ToLower(method[1:]),
URL: urlStr,
Err: err,
}
if redirectFailed {
// Special case for Go 1 compatibility: return both the response
// and an error if the CheckRedirect function failed.
// See http://golang.org/issue/3795
return resp, urlErr
}
if resp != nil {
resp.Body.Close()
}
return nil, urlErr
}
func defaultCheckRedirect(req *Request, via []*Request) error {
if len(via) >= 10 {
return errors.New("stopped after 10 redirects")
}
return nil
}
// Post issues a POST to the specified URL.
//
// Caller should close resp.Body when done reading from it.
//
// Post is a wrapper around DefaultClient.Post
func Post(url string, bodyType string, body io.Reader) (resp *Response, err error) {
return DefaultClient.Post(url, bodyType, body)
}
// Post issues a POST to the specified URL.
//
// Caller should close resp.Body when done reading from it.
//
// If the provided body is also an io.Closer, it is closed after the
// request.
func (c *Client) Post(url string, bodyType string, body io.Reader) (resp *Response, err error) {
req, err := NewRequest("POST", url, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", bodyType)
return c.doFollowingRedirects(req, shouldRedirectPost)
}
// PostForm issues a POST to the specified URL, with data's keys and
// values URL-encoded as the request body.
//
// When err is nil, resp always contains a non-nil resp.Body.
// Caller should close resp.Body when done reading from it.
//
// PostForm is a wrapper around DefaultClient.PostForm
func PostForm(url string, data url.Values) (resp *Response, err error) {
return DefaultClient.PostForm(url, data)
}
// PostForm issues a POST to the specified URL,
// with data's keys and values urlencoded as the request body.
//
// When err is nil, resp always contains a non-nil resp.Body.
// Caller should close resp.Body when done reading from it.
func (c *Client) PostForm(url string, data url.Values) (resp *Response, err error) {
return c.Post(url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
}
// Head issues a HEAD to the specified URL. If the response is one of the
// following redirect codes, Head follows the redirect after calling the
// Client's CheckRedirect function.
//
// 301 (Moved Permanently)
// 302 (Found)
// 303 (See Other)
// 307 (Temporary Redirect)
//
// Head is a wrapper around DefaultClient.Head
func Head(url string) (resp *Response, err error) {
return DefaultClient.Head(url)
}
// Head issues a HEAD to the specified URL. If the response is one of the
// following redirect codes, Head follows the redirect after calling the
// Client's CheckRedirect function.
//
// 301 (Moved Permanently)
// 302 (Found)
// 303 (See Other)
// 307 (Temporary Redirect)
func (c *Client) Head(url string) (resp *Response, err error) {
req, err := NewRequest("HEAD", url, nil)
if err != nil {
return nil, err
}
return c.doFollowingRedirects(req, shouldRedirectGet)
}
type cancelTimerBody struct {
t *time.Timer
rc io.ReadCloser
}
func (b *cancelTimerBody) Read(p []byte) (n int, err error) {
n, err = b.rc.Read(p)
if err == io.EOF {
b.t.Stop()
}
return
}
func (b *cancelTimerBody) Close() error {
err := b.rc.Close()
b.t.Stop()
return err
}

363
vendor/github.com/masterzen/azure-sdk-for-go/core/http/cookie.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"bytes"
"fmt"
"log"
"net"
"strconv"
"strings"
"time"
)
// This implementation is done according to RFC 6265:
//
// http://tools.ietf.org/html/rfc6265
// A Cookie represents an HTTP cookie as sent in the Set-Cookie header of an
// HTTP response or the Cookie header of an HTTP request.
type Cookie struct {
Name string
Value string
Path string
Domain string
Expires time.Time
RawExpires string
// MaxAge=0 means no 'Max-Age' attribute specified.
// MaxAge<0 means delete cookie now, equivalently 'Max-Age: 0'
// MaxAge>0 means Max-Age attribute present and given in seconds
MaxAge int
Secure bool
HttpOnly bool
Raw string
Unparsed []string // Raw text of unparsed attribute-value pairs
}
// readSetCookies parses all "Set-Cookie" values from
// the header h and returns the successfully parsed Cookies.
func readSetCookies(h Header) []*Cookie {
cookies := []*Cookie{}
for _, line := range h["Set-Cookie"] {
parts := strings.Split(strings.TrimSpace(line), ";")
if len(parts) == 1 && parts[0] == "" {
continue
}
parts[0] = strings.TrimSpace(parts[0])
j := strings.Index(parts[0], "=")
if j < 0 {
continue
}
name, value := parts[0][:j], parts[0][j+1:]
if !isCookieNameValid(name) {
continue
}
value, success := parseCookieValue(value)
if !success {
continue
}
c := &Cookie{
Name: name,
Value: value,
Raw: line,
}
for i := 1; i < len(parts); i++ {
parts[i] = strings.TrimSpace(parts[i])
if len(parts[i]) == 0 {
continue
}
attr, val := parts[i], ""
if j := strings.Index(attr, "="); j >= 0 {
attr, val = attr[:j], attr[j+1:]
}
lowerAttr := strings.ToLower(attr)
val, success = parseCookieValue(val)
if !success {
c.Unparsed = append(c.Unparsed, parts[i])
continue
}
switch lowerAttr {
case "secure":
c.Secure = true
continue
case "httponly":
c.HttpOnly = true
continue
case "domain":
c.Domain = val
continue
case "max-age":
secs, err := strconv.Atoi(val)
if err != nil || secs != 0 && val[0] == '0' {
break
}
if secs <= 0 {
c.MaxAge = -1
} else {
c.MaxAge = secs
}
continue
case "expires":
c.RawExpires = val
exptime, err := time.Parse(time.RFC1123, val)
if err != nil {
exptime, err = time.Parse("Mon, 02-Jan-2006 15:04:05 MST", val)
if err != nil {
c.Expires = time.Time{}
break
}
}
c.Expires = exptime.UTC()
continue
case "path":
c.Path = val
continue
}
c.Unparsed = append(c.Unparsed, parts[i])
}
cookies = append(cookies, c)
}
return cookies
}
// SetCookie adds a Set-Cookie header to the provided ResponseWriter's headers.
func SetCookie(w ResponseWriter, cookie *Cookie) {
w.Header().Add("Set-Cookie", cookie.String())
}
// String returns the serialization of the cookie for use in a Cookie
// header (if only Name and Value are set) or a Set-Cookie response
// header (if other fields are set).
func (c *Cookie) String() string {
var b bytes.Buffer
fmt.Fprintf(&b, "%s=%s", sanitizeCookieName(c.Name), sanitizeCookieValue(c.Value))
if len(c.Path) > 0 {
fmt.Fprintf(&b, "; Path=%s", sanitizeCookiePath(c.Path))
}
if len(c.Domain) > 0 {
if validCookieDomain(c.Domain) {
// A c.Domain containing illegal characters is not
// sanitized but simply dropped which turns the cookie
// into a host-only cookie. A leading dot is okay
// but won't be sent.
d := c.Domain
if d[0] == '.' {
d = d[1:]
}
fmt.Fprintf(&b, "; Domain=%s", d)
} else {
log.Printf("net/http: invalid Cookie.Domain %q; dropping domain attribute",
c.Domain)
}
}
if c.Expires.Unix() > 0 {
fmt.Fprintf(&b, "; Expires=%s", c.Expires.UTC().Format(time.RFC1123))
}
if c.MaxAge > 0 {
fmt.Fprintf(&b, "; Max-Age=%d", c.MaxAge)
} else if c.MaxAge < 0 {
fmt.Fprintf(&b, "; Max-Age=0")
}
if c.HttpOnly {
fmt.Fprintf(&b, "; HttpOnly")
}
if c.Secure {
fmt.Fprintf(&b, "; Secure")
}
return b.String()
}
// readCookies parses all "Cookie" values from the header h and
// returns the successfully parsed Cookies.
//
// if filter isn't empty, only cookies of that name are returned
func readCookies(h Header, filter string) []*Cookie {
cookies := []*Cookie{}
lines, ok := h["Cookie"]
if !ok {
return cookies
}
for _, line := range lines {
parts := strings.Split(strings.TrimSpace(line), ";")
if len(parts) == 1 && parts[0] == "" {
continue
}
// Per-line attributes
parsedPairs := 0
for i := 0; i < len(parts); i++ {
parts[i] = strings.TrimSpace(parts[i])
if len(parts[i]) == 0 {
continue
}
name, val := parts[i], ""
if j := strings.Index(name, "="); j >= 0 {
name, val = name[:j], name[j+1:]
}
if !isCookieNameValid(name) {
continue
}
if filter != "" && filter != name {
continue
}
val, success := parseCookieValue(val)
if !success {
continue
}
cookies = append(cookies, &Cookie{Name: name, Value: val})
parsedPairs++
}
}
return cookies
}
// validCookieDomain returns wheter v is a valid cookie domain-value.
func validCookieDomain(v string) bool {
if isCookieDomainName(v) {
return true
}
if net.ParseIP(v) != nil && !strings.Contains(v, ":") {
return true
}
return false
}
// isCookieDomainName returns whether s is a valid domain name or a valid
// domain name with a leading dot '.'. It is almost a direct copy of
// package net's isDomainName.
func isCookieDomainName(s string) bool {
if len(s) == 0 {
return false
}
if len(s) > 255 {
return false
}
if s[0] == '.' {
// A cookie a domain attribute may start with a leading dot.
s = s[1:]
}
last := byte('.')
ok := false // Ok once we've seen a letter.
partlen := 0
for i := 0; i < len(s); i++ {
c := s[i]
switch {
default:
return false
case 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z':
// No '_' allowed here (in contrast to package net).
ok = true
partlen++
case '0' <= c && c <= '9':
// fine
partlen++
case c == '-':
// Byte before dash cannot be dot.
if last == '.' {
return false
}
partlen++
case c == '.':
// Byte before dot cannot be dot, dash.
if last == '.' || last == '-' {
return false
}
if partlen > 63 || partlen == 0 {
return false
}
partlen = 0
}
last = c
}
if last == '-' || partlen > 63 {
return false
}
return ok
}
var cookieNameSanitizer = strings.NewReplacer("\n", "-", "\r", "-")
func sanitizeCookieName(n string) string {
return cookieNameSanitizer.Replace(n)
}
// http://tools.ietf.org/html/rfc6265#section-4.1.1
// cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
// cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
// ; US-ASCII characters excluding CTLs,
// ; whitespace DQUOTE, comma, semicolon,
// ; and backslash
// We loosen this as spaces and commas are common in cookie values
// but we produce a quoted cookie-value in when value starts or ends
// with a comma or space.
// See http://golang.org/issue/7243 for the discussion.
func sanitizeCookieValue(v string) string {
v = sanitizeOrWarn("Cookie.Value", validCookieValueByte, v)
if len(v) == 0 {
return v
}
if v[0] == ' ' || v[0] == ',' || v[len(v)-1] == ' ' || v[len(v)-1] == ',' {
return `"` + v + `"`
}
return v
}
func validCookieValueByte(b byte) bool {
return 0x20 <= b && b < 0x7f && b != '"' && b != ';' && b != '\\'
}
// path-av = "Path=" path-value
// path-value = <any CHAR except CTLs or ";">
func sanitizeCookiePath(v string) string {
return sanitizeOrWarn("Cookie.Path", validCookiePathByte, v)
}
func validCookiePathByte(b byte) bool {
return 0x20 <= b && b < 0x7f && b != ';'
}
func sanitizeOrWarn(fieldName string, valid func(byte) bool, v string) string {
ok := true
for i := 0; i < len(v); i++ {
if valid(v[i]) {
continue
}
log.Printf("net/http: invalid byte %q in %s; dropping invalid bytes", v[i], fieldName)
ok = false
break
}
if ok {
return v
}
buf := make([]byte, 0, len(v))
for i := 0; i < len(v); i++ {
if b := v[i]; valid(b) {
buf = append(buf, b)
}
}
return string(buf)
}
func parseCookieValue(raw string) (string, bool) {
// Strip the quotes, if present.
if len(raw) > 1 && raw[0] == '"' && raw[len(raw)-1] == '"' {
raw = raw[1 : len(raw)-1]
}
for i := 0; i < len(raw); i++ {
if !validCookieValueByte(raw[i]) {
return "", false
}
}
return raw, true
}
func isCookieNameValid(raw string) bool {
return strings.IndexFunc(raw, isNotToken) < 0
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/doc.go generated vendored Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package http provides HTTP client and server implementations.
Get, Head, Post, and PostForm make HTTP (or HTTPS) requests:
resp, err := http.Get("http://example.com/")
...
resp, err := http.Post("http://example.com/upload", "image/jpeg", &buf)
...
resp, err := http.PostForm("http://example.com/form",
url.Values{"key": {"Value"}, "id": {"123"}})
The client must close the response body when finished with it:
resp, err := http.Get("http://example.com/")
if err != nil {
// handle error
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
// ...
For control over HTTP client headers, redirect policy, and other
settings, create a Client:
client := &http.Client{
CheckRedirect: redirectPolicyFunc,
}
resp, err := client.Get("http://example.com")
// ...
req, err := http.NewRequest("GET", "http://example.com", nil)
// ...
req.Header.Add("If-None-Match", `W/"wyzzy"`)
resp, err := client.Do(req)
// ...
For control over proxies, TLS configuration, keep-alives,
compression, and other settings, create a Transport:
tr := &http.Transport{
TLSClientConfig: &tls.Config{RootCAs: pool},
DisableCompression: true,
}
client := &http.Client{Transport: tr}
resp, err := client.Get("https://example.com")
Clients and Transports are safe for concurrent use by multiple
goroutines and for efficiency should only be created once and re-used.
ListenAndServe starts an HTTP server with a given address and handler.
The handler is usually nil, which means to use DefaultServeMux.
Handle and HandleFunc add handlers to DefaultServeMux:
http.Handle("/foo", fooHandler)
http.HandleFunc("/bar", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello, %q", html.EscapeString(r.URL.Path))
})
log.Fatal(http.ListenAndServe(":8080", nil))
More control over the server's behavior is available by creating a
custom Server:
s := &http.Server{
Addr: ":8080",
Handler: myHandler,
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 20,
}
log.Fatal(s.ListenAndServe())
*/
package http

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/filetransport.go generated vendored Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"fmt"
"io"
)
// fileTransport implements RoundTripper for the 'file' protocol.
type fileTransport struct {
fh fileHandler
}
// NewFileTransport returns a new RoundTripper, serving the provided
// FileSystem. The returned RoundTripper ignores the URL host in its
// incoming requests, as well as most other properties of the
// request.
//
// The typical use case for NewFileTransport is to register the "file"
// protocol with a Transport, as in:
//
// t := &http.Transport{}
// t.RegisterProtocol("file", http.NewFileTransport(http.Dir("/")))
// c := &http.Client{Transport: t}
// res, err := c.Get("file:///etc/passwd")
// ...
func NewFileTransport(fs FileSystem) RoundTripper {
return fileTransport{fileHandler{fs}}
}
func (t fileTransport) RoundTrip(req *Request) (resp *Response, err error) {
// We start ServeHTTP in a goroutine, which may take a long
// time if the file is large. The newPopulateResponseWriter
// call returns a channel which either ServeHTTP or finish()
// sends our *Response on, once the *Response itself has been
// populated (even if the body itself is still being
// written to the res.Body, a pipe)
rw, resc := newPopulateResponseWriter()
go func() {
t.fh.ServeHTTP(rw, req)
rw.finish()
}()
return <-resc, nil
}
func newPopulateResponseWriter() (*populateResponse, <-chan *Response) {
pr, pw := io.Pipe()
rw := &populateResponse{
ch: make(chan *Response),
pw: pw,
res: &Response{
Proto: "HTTP/1.0",
ProtoMajor: 1,
Header: make(Header),
Close: true,
Body: pr,
},
}
return rw, rw.ch
}
// populateResponse is a ResponseWriter that populates the *Response
// in res, and writes its body to a pipe connected to the response
// body. Once writes begin or finish() is called, the response is sent
// on ch.
type populateResponse struct {
res *Response
ch chan *Response
wroteHeader bool
hasContent bool
sentResponse bool
pw *io.PipeWriter
}
func (pr *populateResponse) finish() {
if !pr.wroteHeader {
pr.WriteHeader(500)
}
if !pr.sentResponse {
pr.sendResponse()
}
pr.pw.Close()
}
func (pr *populateResponse) sendResponse() {
if pr.sentResponse {
return
}
pr.sentResponse = true
if pr.hasContent {
pr.res.ContentLength = -1
}
pr.ch <- pr.res
}
func (pr *populateResponse) Header() Header {
return pr.res.Header
}
func (pr *populateResponse) WriteHeader(code int) {
if pr.wroteHeader {
return
}
pr.wroteHeader = true
pr.res.StatusCode = code
pr.res.Status = fmt.Sprintf("%d %s", code, StatusText(code))
}
func (pr *populateResponse) Write(p []byte) (n int, err error) {
if !pr.wroteHeader {
pr.WriteHeader(StatusOK)
}
pr.hasContent = true
if !pr.sentResponse {
pr.sendResponse()
}
return pr.pw.Write(p)
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/fs.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// HTTP file system request handler
package http
import (
"errors"
"fmt"
"io"
"mime"
"mime/multipart"
"net/textproto"
"net/url"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"time"
)
// A Dir implements http.FileSystem using the native file
// system restricted to a specific directory tree.
//
// An empty Dir is treated as ".".
type Dir string
func (d Dir) Open(name string) (File, error) {
if filepath.Separator != '/' && strings.IndexRune(name, filepath.Separator) >= 0 ||
strings.Contains(name, "\x00") {
return nil, errors.New("http: invalid character in file path")
}
dir := string(d)
if dir == "" {
dir = "."
}
f, err := os.Open(filepath.Join(dir, filepath.FromSlash(path.Clean("/"+name))))
if err != nil {
return nil, err
}
return f, nil
}
// A FileSystem implements access to a collection of named files.
// The elements in a file path are separated by slash ('/', U+002F)
// characters, regardless of host operating system convention.
type FileSystem interface {
Open(name string) (File, error)
}
// A File is returned by a FileSystem's Open method and can be
// served by the FileServer implementation.
//
// The methods should behave the same as those on an *os.File.
type File interface {
io.Closer
io.Reader
Readdir(count int) ([]os.FileInfo, error)
Seek(offset int64, whence int) (int64, error)
Stat() (os.FileInfo, error)
}
func dirList(w ResponseWriter, f File) {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
fmt.Fprintf(w, "<pre>\n")
for {
dirs, err := f.Readdir(100)
if err != nil || len(dirs) == 0 {
break
}
for _, d := range dirs {
name := d.Name()
if d.IsDir() {
name += "/"
}
// name may contain '?' or '#', which must be escaped to remain
// part of the URL path, and not indicate the start of a query
// string or fragment.
url := url.URL{Path: name}
fmt.Fprintf(w, "<a href=\"%s\">%s</a>\n", url.String(), htmlReplacer.Replace(name))
}
}
fmt.Fprintf(w, "</pre>\n")
}
// ServeContent replies to the request using the content in the
// provided ReadSeeker. The main benefit of ServeContent over io.Copy
// is that it handles Range requests properly, sets the MIME type, and
// handles If-Modified-Since requests.
//
// If the response's Content-Type header is not set, ServeContent
// first tries to deduce the type from name's file extension and,
// if that fails, falls back to reading the first block of the content
// and passing it to DetectContentType.
// The name is otherwise unused; in particular it can be empty and is
// never sent in the response.
//
// If modtime is not the zero time, ServeContent includes it in a
// Last-Modified header in the response. If the request includes an
// If-Modified-Since header, ServeContent uses modtime to decide
// whether the content needs to be sent at all.
//
// The content's Seek method must work: ServeContent uses
// a seek to the end of the content to determine its size.
//
// If the caller has set w's ETag header, ServeContent uses it to
// handle requests using If-Range and If-None-Match.
//
// Note that *os.File implements the io.ReadSeeker interface.
func ServeContent(w ResponseWriter, req *Request, name string, modtime time.Time, content io.ReadSeeker) {
sizeFunc := func() (int64, error) {
size, err := content.Seek(0, os.SEEK_END)
if err != nil {
return 0, errSeeker
}
_, err = content.Seek(0, os.SEEK_SET)
if err != nil {
return 0, errSeeker
}
return size, nil
}
serveContent(w, req, name, modtime, sizeFunc, content)
}
// errSeeker is returned by ServeContent's sizeFunc when the content
// doesn't seek properly. The underlying Seeker's error text isn't
// included in the sizeFunc reply so it's not sent over HTTP to end
// users.
var errSeeker = errors.New("seeker can't seek")
// if name is empty, filename is unknown. (used for mime type, before sniffing)
// if modtime.IsZero(), modtime is unknown.
// content must be seeked to the beginning of the file.
// The sizeFunc is called at most once. Its error, if any, is sent in the HTTP response.
func serveContent(w ResponseWriter, r *Request, name string, modtime time.Time, sizeFunc func() (int64, error), content io.ReadSeeker) {
if checkLastModified(w, r, modtime) {
return
}
rangeReq, done := checkETag(w, r)
if done {
return
}
code := StatusOK
// If Content-Type isn't set, use the file's extension to find it, but
// if the Content-Type is unset explicitly, do not sniff the type.
ctypes, haveType := w.Header()["Content-Type"]
var ctype string
if !haveType {
ctype = mime.TypeByExtension(filepath.Ext(name))
if ctype == "" {
// read a chunk to decide between utf-8 text and binary
var buf [sniffLen]byte
n, _ := io.ReadFull(content, buf[:])
ctype = DetectContentType(buf[:n])
_, err := content.Seek(0, os.SEEK_SET) // rewind to output whole file
if err != nil {
Error(w, "seeker can't seek", StatusInternalServerError)
return
}
}
w.Header().Set("Content-Type", ctype)
} else if len(ctypes) > 0 {
ctype = ctypes[0]
}
size, err := sizeFunc()
if err != nil {
Error(w, err.Error(), StatusInternalServerError)
return
}
// handle Content-Range header.
sendSize := size
var sendContent io.Reader = content
if size >= 0 {
ranges, err := parseRange(rangeReq, size)
if err != nil {
Error(w, err.Error(), StatusRequestedRangeNotSatisfiable)
return
}
if sumRangesSize(ranges) > size {
// The total number of bytes in all the ranges
// is larger than the size of the file by
// itself, so this is probably an attack, or a
// dumb client. Ignore the range request.
ranges = nil
}
switch {
case len(ranges) == 1:
// RFC 2616, Section 14.16:
// "When an HTTP message includes the content of a single
// range (for example, a response to a request for a
// single range, or to a request for a set of ranges
// that overlap without any holes), this content is
// transmitted with a Content-Range header, and a
// Content-Length header showing the number of bytes
// actually transferred.
// ...
// A response to a request for a single range MUST NOT
// be sent using the multipart/byteranges media type."
ra := ranges[0]
if _, err := content.Seek(ra.start, os.SEEK_SET); err != nil {
Error(w, err.Error(), StatusRequestedRangeNotSatisfiable)
return
}
sendSize = ra.length
code = StatusPartialContent
w.Header().Set("Content-Range", ra.contentRange(size))
case len(ranges) > 1:
for _, ra := range ranges {
if ra.start > size {
Error(w, err.Error(), StatusRequestedRangeNotSatisfiable)
return
}
}
sendSize = rangesMIMESize(ranges, ctype, size)
code = StatusPartialContent
pr, pw := io.Pipe()
mw := multipart.NewWriter(pw)
w.Header().Set("Content-Type", "multipart/byteranges; boundary="+mw.Boundary())
sendContent = pr
defer pr.Close() // cause writing goroutine to fail and exit if CopyN doesn't finish.
go func() {
for _, ra := range ranges {
part, err := mw.CreatePart(ra.mimeHeader(ctype, size))
if err != nil {
pw.CloseWithError(err)
return
}
if _, err := content.Seek(ra.start, os.SEEK_SET); err != nil {
pw.CloseWithError(err)
return
}
if _, err := io.CopyN(part, content, ra.length); err != nil {
pw.CloseWithError(err)
return
}
}
mw.Close()
pw.Close()
}()
}
w.Header().Set("Accept-Ranges", "bytes")
if w.Header().Get("Content-Encoding") == "" {
w.Header().Set("Content-Length", strconv.FormatInt(sendSize, 10))
}
}
w.WriteHeader(code)
if r.Method != "HEAD" {
io.CopyN(w, sendContent, sendSize)
}
}
// modtime is the modification time of the resource to be served, or IsZero().
// return value is whether this request is now complete.
func checkLastModified(w ResponseWriter, r *Request, modtime time.Time) bool {
if modtime.IsZero() {
return false
}
// The Date-Modified header truncates sub-second precision, so
// use mtime < t+1s instead of mtime <= t to check for unmodified.
if t, err := time.Parse(TimeFormat, r.Header.Get("If-Modified-Since")); err == nil && modtime.Before(t.Add(1*time.Second)) {
h := w.Header()
delete(h, "Content-Type")
delete(h, "Content-Length")
w.WriteHeader(StatusNotModified)
return true
}
w.Header().Set("Last-Modified", modtime.UTC().Format(TimeFormat))
return false
}
// checkETag implements If-None-Match and If-Range checks.
// The ETag must have been previously set in the ResponseWriter's headers.
//
// The return value is the effective request "Range" header to use and
// whether this request is now considered done.
func checkETag(w ResponseWriter, r *Request) (rangeReq string, done bool) {
etag := w.Header().get("Etag")
rangeReq = r.Header.get("Range")
// Invalidate the range request if the entity doesn't match the one
// the client was expecting.
// "If-Range: version" means "ignore the Range: header unless version matches the
// current file."
// We only support ETag versions.
// The caller must have set the ETag on the response already.
if ir := r.Header.get("If-Range"); ir != "" && ir != etag {
// TODO(bradfitz): handle If-Range requests with Last-Modified
// times instead of ETags? I'd rather not, at least for
// now. That seems like a bug/compromise in the RFC 2616, and
// I've never heard of anybody caring about that (yet).
rangeReq = ""
}
if inm := r.Header.get("If-None-Match"); inm != "" {
// Must know ETag.
if etag == "" {
return rangeReq, false
}
// TODO(bradfitz): non-GET/HEAD requests require more work:
// sending a different status code on matches, and
// also can't use weak cache validators (those with a "W/
// prefix). But most users of ServeContent will be using
// it on GET or HEAD, so only support those for now.
if r.Method != "GET" && r.Method != "HEAD" {
return rangeReq, false
}
// TODO(bradfitz): deal with comma-separated or multiple-valued
// list of If-None-match values. For now just handle the common
// case of a single item.
if inm == etag || inm == "*" {
h := w.Header()
delete(h, "Content-Type")
delete(h, "Content-Length")
w.WriteHeader(StatusNotModified)
return "", true
}
}
return rangeReq, false
}
// name is '/'-separated, not filepath.Separator.
func serveFile(w ResponseWriter, r *Request, fs FileSystem, name string, redirect bool) {
const indexPage = "/index.html"
// redirect .../index.html to .../
// can't use Redirect() because that would make the path absolute,
// which would be a problem running under StripPrefix
if strings.HasSuffix(r.URL.Path, indexPage) {
localRedirect(w, r, "./")
return
}
f, err := fs.Open(name)
if err != nil {
// TODO expose actual error?
NotFound(w, r)
return
}
defer f.Close()
d, err1 := f.Stat()
if err1 != nil {
// TODO expose actual error?
NotFound(w, r)
return
}
if redirect {
// redirect to canonical path: / at end of directory url
// r.URL.Path always begins with /
url := r.URL.Path
if d.IsDir() {
if url[len(url)-1] != '/' {
localRedirect(w, r, path.Base(url)+"/")
return
}
} else {
if url[len(url)-1] == '/' {
localRedirect(w, r, "../"+path.Base(url))
return
}
}
}
// use contents of index.html for directory, if present
if d.IsDir() {
index := name + indexPage
ff, err := fs.Open(index)
if err == nil {
defer ff.Close()
dd, err := ff.Stat()
if err == nil {
name = index
d = dd
f = ff
}
}
}
// Still a directory? (we didn't find an index.html file)
if d.IsDir() {
if checkLastModified(w, r, d.ModTime()) {
return
}
dirList(w, f)
return
}
// serverContent will check modification time
sizeFunc := func() (int64, error) { return d.Size(), nil }
serveContent(w, r, d.Name(), d.ModTime(), sizeFunc, f)
}
// localRedirect gives a Moved Permanently response.
// It does not convert relative paths to absolute paths like Redirect does.
func localRedirect(w ResponseWriter, r *Request, newPath string) {
if q := r.URL.RawQuery; q != "" {
newPath += "?" + q
}
w.Header().Set("Location", newPath)
w.WriteHeader(StatusMovedPermanently)
}
// ServeFile replies to the request with the contents of the named file or directory.
func ServeFile(w ResponseWriter, r *Request, name string) {
dir, file := filepath.Split(name)
serveFile(w, r, Dir(dir), file, false)
}
type fileHandler struct {
root FileSystem
}
// FileServer returns a handler that serves HTTP requests
// with the contents of the file system rooted at root.
//
// To use the operating system's file system implementation,
// use http.Dir:
//
// http.Handle("/", http.FileServer(http.Dir("/tmp")))
func FileServer(root FileSystem) Handler {
return &fileHandler{root}
}
func (f *fileHandler) ServeHTTP(w ResponseWriter, r *Request) {
upath := r.URL.Path
if !strings.HasPrefix(upath, "/") {
upath = "/" + upath
r.URL.Path = upath
}
serveFile(w, r, f.root, path.Clean(upath), true)
}
// httpRange specifies the byte range to be sent to the client.
type httpRange struct {
start, length int64
}
func (r httpRange) contentRange(size int64) string {
return fmt.Sprintf("bytes %d-%d/%d", r.start, r.start+r.length-1, size)
}
func (r httpRange) mimeHeader(contentType string, size int64) textproto.MIMEHeader {
return textproto.MIMEHeader{
"Content-Range": {r.contentRange(size)},
"Content-Type": {contentType},
}
}
// parseRange parses a Range header string as per RFC 2616.
func parseRange(s string, size int64) ([]httpRange, error) {
if s == "" {
return nil, nil // header not present
}
const b = "bytes="
if !strings.HasPrefix(s, b) {
return nil, errors.New("invalid range")
}
var ranges []httpRange
for _, ra := range strings.Split(s[len(b):], ",") {
ra = strings.TrimSpace(ra)
if ra == "" {
continue
}
i := strings.Index(ra, "-")
if i < 0 {
return nil, errors.New("invalid range")
}
start, end := strings.TrimSpace(ra[:i]), strings.TrimSpace(ra[i+1:])
var r httpRange
if start == "" {
// If no start is specified, end specifies the
// range start relative to the end of the file.
i, err := strconv.ParseInt(end, 10, 64)
if err != nil {
return nil, errors.New("invalid range")
}
if i > size {
i = size
}
r.start = size - i
r.length = size - r.start
} else {
i, err := strconv.ParseInt(start, 10, 64)
if err != nil || i > size || i < 0 {
return nil, errors.New("invalid range")
}
r.start = i
if end == "" {
// If no end is specified, range extends to end of the file.
r.length = size - r.start
} else {
i, err := strconv.ParseInt(end, 10, 64)
if err != nil || r.start > i {
return nil, errors.New("invalid range")
}
if i >= size {
i = size - 1
}
r.length = i - r.start + 1
}
}
ranges = append(ranges, r)
}
return ranges, nil
}
// countingWriter counts how many bytes have been written to it.
type countingWriter int64
func (w *countingWriter) Write(p []byte) (n int, err error) {
*w += countingWriter(len(p))
return len(p), nil
}
// rangesMIMESize returns the number of bytes it takes to encode the
// provided ranges as a multipart response.
func rangesMIMESize(ranges []httpRange, contentType string, contentSize int64) (encSize int64) {
var w countingWriter
mw := multipart.NewWriter(&w)
for _, ra := range ranges {
mw.CreatePart(ra.mimeHeader(contentType, contentSize))
encSize += ra.length
}
mw.Close()
encSize += int64(w)
return
}
func sumRangesSize(ranges []httpRange) (size int64) {
for _, ra := range ranges {
size += ra.length
}
return
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/header.go generated vendored Normal file
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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"io"
"net/textproto"
"sort"
"strings"
"sync"
"time"
)
var raceEnabled = false // set by race.go
// A Header represents the key-value pairs in an HTTP header.
type Header map[string][]string
// Add adds the key, value pair to the header.
// It appends to any existing values associated with key.
func (h Header) Add(key, value string) {
textproto.MIMEHeader(h).Add(key, value)
}
// Set sets the header entries associated with key to
// the single element value. It replaces any existing
// values associated with key.
func (h Header) Set(key, value string) {
textproto.MIMEHeader(h).Set(key, value)
}
// Get gets the first value associated with the given key.
// If there are no values associated with the key, Get returns "".
// To access multiple values of a key, access the map directly
// with CanonicalHeaderKey.
func (h Header) Get(key string) string {
return textproto.MIMEHeader(h).Get(key)
}
// get is like Get, but key must already be in CanonicalHeaderKey form.
func (h Header) get(key string) string {
if v := h[key]; len(v) > 0 {
return v[0]
}
return ""
}
// Del deletes the values associated with key.
func (h Header) Del(key string) {
textproto.MIMEHeader(h).Del(key)
}
// Write writes a header in wire format.
func (h Header) Write(w io.Writer) error {
return h.WriteSubset(w, nil)
}
func (h Header) clone() Header {
h2 := make(Header, len(h))
for k, vv := range h {
vv2 := make([]string, len(vv))
copy(vv2, vv)
h2[k] = vv2
}
return h2
}
var timeFormats = []string{
TimeFormat,
time.RFC850,
time.ANSIC,
}
// ParseTime parses a time header (such as the Date: header),
// trying each of the three formats allowed by HTTP/1.1:
// TimeFormat, time.RFC850, and time.ANSIC.
func ParseTime(text string) (t time.Time, err error) {
for _, layout := range timeFormats {
t, err = time.Parse(layout, text)
if err == nil {
return
}
}
return
}
var headerNewlineToSpace = strings.NewReplacer("\n", " ", "\r", " ")
type writeStringer interface {
WriteString(string) (int, error)
}
// stringWriter implements WriteString on a Writer.
type stringWriter struct {
w io.Writer
}
func (w stringWriter) WriteString(s string) (n int, err error) {
return w.w.Write([]byte(s))
}
type keyValues struct {
key string
values []string
}
// A headerSorter implements sort.Interface by sorting a []keyValues
// by key. It's used as a pointer, so it can fit in a sort.Interface
// interface value without allocation.
type headerSorter struct {
kvs []keyValues
}
func (s *headerSorter) Len() int { return len(s.kvs) }
func (s *headerSorter) Swap(i, j int) { s.kvs[i], s.kvs[j] = s.kvs[j], s.kvs[i] }
func (s *headerSorter) Less(i, j int) bool { return s.kvs[i].key < s.kvs[j].key }
var headerSorterPool = sync.Pool{
New: func() interface{} { return new(headerSorter) },
}
// sortedKeyValues returns h's keys sorted in the returned kvs
// slice. The headerSorter used to sort is also returned, for possible
// return to headerSorterCache.
func (h Header) sortedKeyValues(exclude map[string]bool) (kvs []keyValues, hs *headerSorter) {
hs = headerSorterPool.Get().(*headerSorter)
if cap(hs.kvs) < len(h) {
hs.kvs = make([]keyValues, 0, len(h))
}
kvs = hs.kvs[:0]
for k, vv := range h {
if !exclude[k] {
kvs = append(kvs, keyValues{k, vv})
}
}
hs.kvs = kvs
sort.Sort(hs)
return kvs, hs
}
// WriteSubset writes a header in wire format.
// If exclude is not nil, keys where exclude[key] == true are not written.
func (h Header) WriteSubset(w io.Writer, exclude map[string]bool) error {
ws, ok := w.(writeStringer)
if !ok {
ws = stringWriter{w}
}
kvs, sorter := h.sortedKeyValues(exclude)
for _, kv := range kvs {
for _, v := range kv.values {
v = headerNewlineToSpace.Replace(v)
v = textproto.TrimString(v)
for _, s := range []string{kv.key, ": ", v, "\r\n"} {
if _, err := ws.WriteString(s); err != nil {
return err
}
}
}
}
headerSorterPool.Put(sorter)
return nil
}
// CanonicalHeaderKey returns the canonical format of the
// header key s. The canonicalization converts the first
// letter and any letter following a hyphen to upper case;
// the rest are converted to lowercase. For example, the
// canonical key for "accept-encoding" is "Accept-Encoding".
func CanonicalHeaderKey(s string) string { return textproto.CanonicalMIMEHeaderKey(s) }
// hasToken reports whether token appears with v, ASCII
// case-insensitive, with space or comma boundaries.
// token must be all lowercase.
// v may contain mixed cased.
func hasToken(v, token string) bool {
if len(token) > len(v) || token == "" {
return false
}
if v == token {
return true
}
for sp := 0; sp <= len(v)-len(token); sp++ {
// Check that first character is good.
// The token is ASCII, so checking only a single byte
// is sufficient. We skip this potential starting
// position if both the first byte and its potential
// ASCII uppercase equivalent (b|0x20) don't match.
// False positives ('^' => '~') are caught by EqualFold.
if b := v[sp]; b != token[0] && b|0x20 != token[0] {
continue
}
// Check that start pos is on a valid token boundary.
if sp > 0 && !isTokenBoundary(v[sp-1]) {
continue
}
// Check that end pos is on a valid token boundary.
if endPos := sp + len(token); endPos != len(v) && !isTokenBoundary(v[endPos]) {
continue
}
if strings.EqualFold(v[sp:sp+len(token)], token) {
return true
}
}
return false
}
func isTokenBoundary(b byte) bool {
return b == ' ' || b == ',' || b == '\t'
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/jar.go generated vendored Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"net/url"
)
// A CookieJar manages storage and use of cookies in HTTP requests.
//
// Implementations of CookieJar must be safe for concurrent use by multiple
// goroutines.
//
// The net/http/cookiejar package provides a CookieJar implementation.
type CookieJar interface {
// SetCookies handles the receipt of the cookies in a reply for the
// given URL. It may or may not choose to save the cookies, depending
// on the jar's policy and implementation.
SetCookies(u *url.URL, cookies []*Cookie)
// Cookies returns the cookies to send in a request for the given URL.
// It is up to the implementation to honor the standard cookie use
// restrictions such as in RFC 6265.
Cookies(u *url.URL) []*Cookie
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/lex.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
// This file deals with lexical matters of HTTP
var isTokenTable = [127]bool{
'!': true,
'#': true,
'$': true,
'%': true,
'&': true,
'\'': true,
'*': true,
'+': true,
'-': true,
'.': true,
'0': true,
'1': true,
'2': true,
'3': true,
'4': true,
'5': true,
'6': true,
'7': true,
'8': true,
'9': true,
'A': true,
'B': true,
'C': true,
'D': true,
'E': true,
'F': true,
'G': true,
'H': true,
'I': true,
'J': true,
'K': true,
'L': true,
'M': true,
'N': true,
'O': true,
'P': true,
'Q': true,
'R': true,
'S': true,
'T': true,
'U': true,
'W': true,
'V': true,
'X': true,
'Y': true,
'Z': true,
'^': true,
'_': true,
'`': true,
'a': true,
'b': true,
'c': true,
'd': true,
'e': true,
'f': true,
'g': true,
'h': true,
'i': true,
'j': true,
'k': true,
'l': true,
'm': true,
'n': true,
'o': true,
'p': true,
'q': true,
'r': true,
's': true,
't': true,
'u': true,
'v': true,
'w': true,
'x': true,
'y': true,
'z': true,
'|': true,
'~': true,
}
func isToken(r rune) bool {
i := int(r)
return i < len(isTokenTable) && isTokenTable[i]
}
func isNotToken(r rune) bool {
return !isToken(r)
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/race.go generated vendored Normal file
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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build race
package http
func init() {
raceEnabled = true
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/request.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// HTTP Request reading and parsing.
package http
import (
"bufio"
"bytes"
"crypto/tls"
"errors"
"fmt"
"io"
"io/ioutil"
"mime"
"mime/multipart"
"net/textproto"
"net/url"
"strconv"
"strings"
"sync"
)
const (
maxValueLength = 4096
maxHeaderLines = 1024
chunkSize = 4 << 10 // 4 KB chunks
defaultMaxMemory = 32 << 20 // 32 MB
)
// ErrMissingFile is returned by FormFile when the provided file field name
// is either not present in the request or not a file field.
var ErrMissingFile = errors.New("http: no such file")
// HTTP request parsing errors.
type ProtocolError struct {
ErrorString string
}
func (err *ProtocolError) Error() string { return err.ErrorString }
var (
ErrHeaderTooLong = &ProtocolError{"header too long"}
ErrShortBody = &ProtocolError{"entity body too short"}
ErrNotSupported = &ProtocolError{"feature not supported"}
ErrUnexpectedTrailer = &ProtocolError{"trailer header without chunked transfer encoding"}
ErrMissingContentLength = &ProtocolError{"missing ContentLength in HEAD response"}
ErrNotMultipart = &ProtocolError{"request Content-Type isn't multipart/form-data"}
ErrMissingBoundary = &ProtocolError{"no multipart boundary param in Content-Type"}
)
type badStringError struct {
what string
str string
}
func (e *badStringError) Error() string { return fmt.Sprintf("%s %q", e.what, e.str) }
// Headers that Request.Write handles itself and should be skipped.
var reqWriteExcludeHeader = map[string]bool{
"Host": true, // not in Header map anyway
"User-Agent": true,
"Content-Length": true,
"Transfer-Encoding": true,
"Trailer": true,
}
// A Request represents an HTTP request received by a server
// or to be sent by a client.
//
// The field semantics differ slightly between client and server
// usage. In addition to the notes on the fields below, see the
// documentation for Request.Write and RoundTripper.
type Request struct {
// Method specifies the HTTP method (GET, POST, PUT, etc.).
// For client requests an empty string means GET.
Method string
// URL specifies either the URI being requested (for server
// requests) or the URL to access (for client requests).
//
// For server requests the URL is parsed from the URI
// supplied on the Request-Line as stored in RequestURI. For
// most requests, fields other than Path and RawQuery will be
// empty. (See RFC 2616, Section 5.1.2)
//
// For client requests, the URL's Host specifies the server to
// connect to, while the Request's Host field optionally
// specifies the Host header value to send in the HTTP
// request.
URL *url.URL
// The protocol version for incoming requests.
// Client requests always use HTTP/1.1.
Proto string // "HTTP/1.0"
ProtoMajor int // 1
ProtoMinor int // 0
// A header maps request lines to their values.
// If the header says
//
// accept-encoding: gzip, deflate
// Accept-Language: en-us
// Connection: keep-alive
//
// then
//
// Header = map[string][]string{
// "Accept-Encoding": {"gzip, deflate"},
// "Accept-Language": {"en-us"},
// "Connection": {"keep-alive"},
// }
//
// HTTP defines that header names are case-insensitive.
// The request parser implements this by canonicalizing the
// name, making the first character and any characters
// following a hyphen uppercase and the rest lowercase.
//
// For client requests certain headers are automatically
// added and may override values in Header.
//
// See the documentation for the Request.Write method.
Header Header
// Body is the request's body.
//
// For client requests a nil body means the request has no
// body, such as a GET request. The HTTP Client's Transport
// is responsible for calling the Close method.
//
// For server requests the Request Body is always non-nil
// but will return EOF immediately when no body is present.
// The Server will close the request body. The ServeHTTP
// Handler does not need to.
Body io.ReadCloser
// ContentLength records the length of the associated content.
// The value -1 indicates that the length is unknown.
// Values >= 0 indicate that the given number of bytes may
// be read from Body.
// For client requests, a value of 0 means unknown if Body is not nil.
ContentLength int64
// TransferEncoding lists the transfer encodings from outermost to
// innermost. An empty list denotes the "identity" encoding.
// TransferEncoding can usually be ignored; chunked encoding is
// automatically added and removed as necessary when sending and
// receiving requests.
TransferEncoding []string
// Close indicates whether to close the connection after
// replying to this request (for servers) or after sending
// the request (for clients).
Close bool
// For server requests Host specifies the host on which the
// URL is sought. Per RFC 2616, this is either the value of
// the "Host" header or the host name given in the URL itself.
// It may be of the form "host:port".
//
// For client requests Host optionally overrides the Host
// header to send. If empty, the Request.Write method uses
// the value of URL.Host.
Host string
// Form contains the parsed form data, including both the URL
// field's query parameters and the POST or PUT form data.
// This field is only available after ParseForm is called.
// The HTTP client ignores Form and uses Body instead.
Form url.Values
// PostForm contains the parsed form data from POST or PUT
// body parameters.
// This field is only available after ParseForm is called.
// The HTTP client ignores PostForm and uses Body instead.
PostForm url.Values
// MultipartForm is the parsed multipart form, including file uploads.
// This field is only available after ParseMultipartForm is called.
// The HTTP client ignores MultipartForm and uses Body instead.
MultipartForm *multipart.Form
// Trailer specifies additional headers that are sent after the request
// body.
//
// For server requests the Trailer map initially contains only the
// trailer keys, with nil values. (The client declares which trailers it
// will later send.) While the handler is reading from Body, it must
// not reference Trailer. After reading from Body returns EOF, Trailer
// can be read again and will contain non-nil values, if they were sent
// by the client.
//
// For client requests Trailer must be initialized to a map containing
// the trailer keys to later send. The values may be nil or their final
// values. The ContentLength must be 0 or -1, to send a chunked request.
// After the HTTP request is sent the map values can be updated while
// the request body is read. Once the body returns EOF, the caller must
// not mutate Trailer.
//
// Few HTTP clients, servers, or proxies support HTTP trailers.
Trailer Header
// RemoteAddr allows HTTP servers and other software to record
// the network address that sent the request, usually for
// logging. This field is not filled in by ReadRequest and
// has no defined format. The HTTP server in this package
// sets RemoteAddr to an "IP:port" address before invoking a
// handler.
// This field is ignored by the HTTP client.
RemoteAddr string
// RequestURI is the unmodified Request-URI of the
// Request-Line (RFC 2616, Section 5.1) as sent by the client
// to a server. Usually the URL field should be used instead.
// It is an error to set this field in an HTTP client request.
RequestURI string
// TLS allows HTTP servers and other software to record
// information about the TLS connection on which the request
// was received. This field is not filled in by ReadRequest.
// The HTTP server in this package sets the field for
// TLS-enabled connections before invoking a handler;
// otherwise it leaves the field nil.
// This field is ignored by the HTTP client.
TLS *tls.ConnectionState
}
// ProtoAtLeast reports whether the HTTP protocol used
// in the request is at least major.minor.
func (r *Request) ProtoAtLeast(major, minor int) bool {
return r.ProtoMajor > major ||
r.ProtoMajor == major && r.ProtoMinor >= minor
}
// UserAgent returns the client's User-Agent, if sent in the request.
func (r *Request) UserAgent() string {
return r.Header.Get("User-Agent")
}
// Cookies parses and returns the HTTP cookies sent with the request.
func (r *Request) Cookies() []*Cookie {
return readCookies(r.Header, "")
}
var ErrNoCookie = errors.New("http: named cookie not present")
// Cookie returns the named cookie provided in the request or
// ErrNoCookie if not found.
func (r *Request) Cookie(name string) (*Cookie, error) {
for _, c := range readCookies(r.Header, name) {
return c, nil
}
return nil, ErrNoCookie
}
// AddCookie adds a cookie to the request. Per RFC 6265 section 5.4,
// AddCookie does not attach more than one Cookie header field. That
// means all cookies, if any, are written into the same line,
// separated by semicolon.
func (r *Request) AddCookie(c *Cookie) {
s := fmt.Sprintf("%s=%s", sanitizeCookieName(c.Name), sanitizeCookieValue(c.Value))
if c := r.Header.Get("Cookie"); c != "" {
r.Header.Set("Cookie", c+"; "+s)
} else {
r.Header.Set("Cookie", s)
}
}
// Referer returns the referring URL, if sent in the request.
//
// Referer is misspelled as in the request itself, a mistake from the
// earliest days of HTTP. This value can also be fetched from the
// Header map as Header["Referer"]; the benefit of making it available
// as a method is that the compiler can diagnose programs that use the
// alternate (correct English) spelling req.Referrer() but cannot
// diagnose programs that use Header["Referrer"].
func (r *Request) Referer() string {
return r.Header.Get("Referer")
}
// multipartByReader is a sentinel value.
// Its presence in Request.MultipartForm indicates that parsing of the request
// body has been handed off to a MultipartReader instead of ParseMultipartFrom.
var multipartByReader = &multipart.Form{
Value: make(map[string][]string),
File: make(map[string][]*multipart.FileHeader),
}
// MultipartReader returns a MIME multipart reader if this is a
// multipart/form-data POST request, else returns nil and an error.
// Use this function instead of ParseMultipartForm to
// process the request body as a stream.
func (r *Request) MultipartReader() (*multipart.Reader, error) {
if r.MultipartForm == multipartByReader {
return nil, errors.New("http: MultipartReader called twice")
}
if r.MultipartForm != nil {
return nil, errors.New("http: multipart handled by ParseMultipartForm")
}
r.MultipartForm = multipartByReader
return r.multipartReader()
}
func (r *Request) multipartReader() (*multipart.Reader, error) {
v := r.Header.Get("Content-Type")
if v == "" {
return nil, ErrNotMultipart
}
d, params, err := mime.ParseMediaType(v)
if err != nil || d != "multipart/form-data" {
return nil, ErrNotMultipart
}
boundary, ok := params["boundary"]
if !ok {
return nil, ErrMissingBoundary
}
return multipart.NewReader(r.Body, boundary), nil
}
// Return value if nonempty, def otherwise.
func valueOrDefault(value, def string) string {
if value != "" {
return value
}
return def
}
// NOTE: This is not intended to reflect the actual Go version being used.
// It was changed from "Go http package" to "Go 1.1 package http" at the
// time of the Go 1.1 release because the former User-Agent had ended up
// on a blacklist for some intrusion detection systems.
// See https://codereview.appspot.com/7532043.
const defaultUserAgent = "Go 1.1 package http"
// Write writes an HTTP/1.1 request -- header and body -- in wire format.
// This method consults the following fields of the request:
// Host
// URL
// Method (defaults to "GET")
// Header
// ContentLength
// TransferEncoding
// Body
//
// If Body is present, Content-Length is <= 0 and TransferEncoding
// hasn't been set to "identity", Write adds "Transfer-Encoding:
// chunked" to the header. Body is closed after it is sent.
func (r *Request) Write(w io.Writer) error {
return r.write(w, false, nil)
}
// WriteProxy is like Write but writes the request in the form
// expected by an HTTP proxy. In particular, WriteProxy writes the
// initial Request-URI line of the request with an absolute URI, per
// section 5.1.2 of RFC 2616, including the scheme and host.
// In either case, WriteProxy also writes a Host header, using
// either r.Host or r.URL.Host.
func (r *Request) WriteProxy(w io.Writer) error {
return r.write(w, true, nil)
}
// extraHeaders may be nil
func (req *Request) write(w io.Writer, usingProxy bool, extraHeaders Header) error {
host := req.Host
if host == "" {
if req.URL == nil {
return errors.New("http: Request.Write on Request with no Host or URL set")
}
host = req.URL.Host
}
ruri := req.URL.RequestURI()
if usingProxy && req.URL.Scheme != "" && req.URL.Opaque == "" {
ruri = req.URL.Scheme + "://" + host + ruri
} else if req.Method == "CONNECT" && req.URL.Path == "" {
// CONNECT requests normally give just the host and port, not a full URL.
ruri = host
}
// TODO(bradfitz): escape at least newlines in ruri?
// Wrap the writer in a bufio Writer if it's not already buffered.
// Don't always call NewWriter, as that forces a bytes.Buffer
// and other small bufio Writers to have a minimum 4k buffer
// size.
var bw *bufio.Writer
if _, ok := w.(io.ByteWriter); !ok {
bw = bufio.NewWriter(w)
w = bw
}
fmt.Fprintf(w, "%s %s HTTP/1.1\r\n", valueOrDefault(req.Method, "GET"), ruri)
// Header lines
fmt.Fprintf(w, "Host: %s\r\n", host)
// Use the defaultUserAgent unless the Header contains one, which
// may be blank to not send the header.
userAgent := defaultUserAgent
if req.Header != nil {
if ua := req.Header["User-Agent"]; len(ua) > 0 {
userAgent = ua[0]
}
}
if userAgent != "" {
fmt.Fprintf(w, "User-Agent: %s\r\n", userAgent)
}
// Process Body,ContentLength,Close,Trailer
tw, err := newTransferWriter(req)
if err != nil {
return err
}
err = tw.WriteHeader(w)
if err != nil {
return err
}
err = req.Header.WriteSubset(w, reqWriteExcludeHeader)
if err != nil {
return err
}
if extraHeaders != nil {
err = extraHeaders.Write(w)
if err != nil {
return err
}
}
io.WriteString(w, "\r\n")
// Write body and trailer
err = tw.WriteBody(w)
if err != nil {
return err
}
if bw != nil {
return bw.Flush()
}
return nil
}
// ParseHTTPVersion parses a HTTP version string.
// "HTTP/1.0" returns (1, 0, true).
func ParseHTTPVersion(vers string) (major, minor int, ok bool) {
const Big = 1000000 // arbitrary upper bound
switch vers {
case "HTTP/1.1":
return 1, 1, true
case "HTTP/1.0":
return 1, 0, true
}
if !strings.HasPrefix(vers, "HTTP/") {
return 0, 0, false
}
dot := strings.Index(vers, ".")
if dot < 0 {
return 0, 0, false
}
major, err := strconv.Atoi(vers[5:dot])
if err != nil || major < 0 || major > Big {
return 0, 0, false
}
minor, err = strconv.Atoi(vers[dot+1:])
if err != nil || minor < 0 || minor > Big {
return 0, 0, false
}
return major, minor, true
}
// NewRequest returns a new Request given a method, URL, and optional body.
//
// If the provided body is also an io.Closer, the returned
// Request.Body is set to body and will be closed by the Client
// methods Do, Post, and PostForm, and Transport.RoundTrip.
func NewRequest(method, urlStr string, body io.Reader) (*Request, error) {
u, err := url.Parse(urlStr)
if err != nil {
return nil, err
}
rc, ok := body.(io.ReadCloser)
if !ok && body != nil {
rc = ioutil.NopCloser(body)
}
req := &Request{
Method: method,
URL: u,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(Header),
Body: rc,
Host: u.Host,
}
if body != nil {
switch v := body.(type) {
case *bytes.Buffer:
req.ContentLength = int64(v.Len())
case *bytes.Reader:
req.ContentLength = int64(v.Len())
case *strings.Reader:
req.ContentLength = int64(v.Len())
}
}
return req, nil
}
// SetBasicAuth sets the request's Authorization header to use HTTP
// Basic Authentication with the provided username and password.
//
// With HTTP Basic Authentication the provided username and password
// are not encrypted.
func (r *Request) SetBasicAuth(username, password string) {
r.Header.Set("Authorization", "Basic "+basicAuth(username, password))
}
// parseRequestLine parses "GET /foo HTTP/1.1" into its three parts.
func parseRequestLine(line string) (method, requestURI, proto string, ok bool) {
s1 := strings.Index(line, " ")
s2 := strings.Index(line[s1+1:], " ")
if s1 < 0 || s2 < 0 {
return
}
s2 += s1 + 1
return line[:s1], line[s1+1 : s2], line[s2+1:], true
}
var textprotoReaderPool sync.Pool
func newTextprotoReader(br *bufio.Reader) *textproto.Reader {
if v := textprotoReaderPool.Get(); v != nil {
tr := v.(*textproto.Reader)
tr.R = br
return tr
}
return textproto.NewReader(br)
}
func putTextprotoReader(r *textproto.Reader) {
r.R = nil
textprotoReaderPool.Put(r)
}
// ReadRequest reads and parses a request from b.
func ReadRequest(b *bufio.Reader) (req *Request, err error) {
tp := newTextprotoReader(b)
req = new(Request)
// First line: GET /index.html HTTP/1.0
var s string
if s, err = tp.ReadLine(); err != nil {
return nil, err
}
defer func() {
putTextprotoReader(tp)
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
}()
var ok bool
req.Method, req.RequestURI, req.Proto, ok = parseRequestLine(s)
if !ok {
return nil, &badStringError{"malformed HTTP request", s}
}
rawurl := req.RequestURI
if req.ProtoMajor, req.ProtoMinor, ok = ParseHTTPVersion(req.Proto); !ok {
return nil, &badStringError{"malformed HTTP version", req.Proto}
}
// CONNECT requests are used two different ways, and neither uses a full URL:
// The standard use is to tunnel HTTPS through an HTTP proxy.
// It looks like "CONNECT www.google.com:443 HTTP/1.1", and the parameter is
// just the authority section of a URL. This information should go in req.URL.Host.
//
// The net/rpc package also uses CONNECT, but there the parameter is a path
// that starts with a slash. It can be parsed with the regular URL parser,
// and the path will end up in req.URL.Path, where it needs to be in order for
// RPC to work.
justAuthority := req.Method == "CONNECT" && !strings.HasPrefix(rawurl, "/")
if justAuthority {
rawurl = "http://" + rawurl
}
if req.URL, err = url.ParseRequestURI(rawurl); err != nil {
return nil, err
}
if justAuthority {
// Strip the bogus "http://" back off.
req.URL.Scheme = ""
}
// Subsequent lines: Key: value.
mimeHeader, err := tp.ReadMIMEHeader()
if err != nil {
return nil, err
}
req.Header = Header(mimeHeader)
// RFC2616: Must treat
// GET /index.html HTTP/1.1
// Host: www.google.com
// and
// GET http://www.google.com/index.html HTTP/1.1
// Host: doesntmatter
// the same. In the second case, any Host line is ignored.
req.Host = req.URL.Host
if req.Host == "" {
req.Host = req.Header.get("Host")
}
delete(req.Header, "Host")
fixPragmaCacheControl(req.Header)
err = readTransfer(req, b)
if err != nil {
return nil, err
}
return req, nil
}
// MaxBytesReader is similar to io.LimitReader but is intended for
// limiting the size of incoming request bodies. In contrast to
// io.LimitReader, MaxBytesReader's result is a ReadCloser, returns a
// non-EOF error for a Read beyond the limit, and Closes the
// underlying reader when its Close method is called.
//
// MaxBytesReader prevents clients from accidentally or maliciously
// sending a large request and wasting server resources.
func MaxBytesReader(w ResponseWriter, r io.ReadCloser, n int64) io.ReadCloser {
return &maxBytesReader{w: w, r: r, n: n}
}
type maxBytesReader struct {
w ResponseWriter
r io.ReadCloser // underlying reader
n int64 // max bytes remaining
stopped bool
}
func (l *maxBytesReader) Read(p []byte) (n int, err error) {
if l.n <= 0 {
if !l.stopped {
l.stopped = true
if res, ok := l.w.(*response); ok {
res.requestTooLarge()
}
}
return 0, errors.New("http: request body too large")
}
if int64(len(p)) > l.n {
p = p[:l.n]
}
n, err = l.r.Read(p)
l.n -= int64(n)
return
}
func (l *maxBytesReader) Close() error {
return l.r.Close()
}
func copyValues(dst, src url.Values) {
for k, vs := range src {
for _, value := range vs {
dst.Add(k, value)
}
}
}
func parsePostForm(r *Request) (vs url.Values, err error) {
if r.Body == nil {
err = errors.New("missing form body")
return
}
ct := r.Header.Get("Content-Type")
// RFC 2616, section 7.2.1 - empty type
// SHOULD be treated as application/octet-stream
if ct == "" {
ct = "application/octet-stream"
}
ct, _, err = mime.ParseMediaType(ct)
switch {
case ct == "application/x-www-form-urlencoded":
var reader io.Reader = r.Body
maxFormSize := int64(1<<63 - 1)
if _, ok := r.Body.(*maxBytesReader); !ok {
maxFormSize = int64(10 << 20) // 10 MB is a lot of text.
reader = io.LimitReader(r.Body, maxFormSize+1)
}
b, e := ioutil.ReadAll(reader)
if e != nil {
if err == nil {
err = e
}
break
}
if int64(len(b)) > maxFormSize {
err = errors.New("http: POST too large")
return
}
vs, e = url.ParseQuery(string(b))
if err == nil {
err = e
}
case ct == "multipart/form-data":
// handled by ParseMultipartForm (which is calling us, or should be)
// TODO(bradfitz): there are too many possible
// orders to call too many functions here.
// Clean this up and write more tests.
// request_test.go contains the start of this,
// in TestParseMultipartFormOrder and others.
}
return
}
// ParseForm parses the raw query from the URL and updates r.Form.
//
// For POST or PUT requests, it also parses the request body as a form and
// put the results into both r.PostForm and r.Form.
// POST and PUT body parameters take precedence over URL query string values
// in r.Form.
//
// If the request Body's size has not already been limited by MaxBytesReader,
// the size is capped at 10MB.
//
// ParseMultipartForm calls ParseForm automatically.
// It is idempotent.
func (r *Request) ParseForm() error {
var err error
if r.PostForm == nil {
if r.Method == "POST" || r.Method == "PUT" || r.Method == "PATCH" {
r.PostForm, err = parsePostForm(r)
}
if r.PostForm == nil {
r.PostForm = make(url.Values)
}
}
if r.Form == nil {
if len(r.PostForm) > 0 {
r.Form = make(url.Values)
copyValues(r.Form, r.PostForm)
}
var newValues url.Values
if r.URL != nil {
var e error
newValues, e = url.ParseQuery(r.URL.RawQuery)
if err == nil {
err = e
}
}
if newValues == nil {
newValues = make(url.Values)
}
if r.Form == nil {
r.Form = newValues
} else {
copyValues(r.Form, newValues)
}
}
return err
}
// ParseMultipartForm parses a request body as multipart/form-data.
// The whole request body is parsed and up to a total of maxMemory bytes of
// its file parts are stored in memory, with the remainder stored on
// disk in temporary files.
// ParseMultipartForm calls ParseForm if necessary.
// After one call to ParseMultipartForm, subsequent calls have no effect.
func (r *Request) ParseMultipartForm(maxMemory int64) error {
if r.MultipartForm == multipartByReader {
return errors.New("http: multipart handled by MultipartReader")
}
if r.Form == nil {
err := r.ParseForm()
if err != nil {
return err
}
}
if r.MultipartForm != nil {
return nil
}
mr, err := r.multipartReader()
if err != nil {
return err
}
f, err := mr.ReadForm(maxMemory)
if err != nil {
return err
}
for k, v := range f.Value {
r.Form[k] = append(r.Form[k], v...)
}
r.MultipartForm = f
return nil
}
// FormValue returns the first value for the named component of the query.
// POST and PUT body parameters take precedence over URL query string values.
// FormValue calls ParseMultipartForm and ParseForm if necessary.
// To access multiple values of the same key use ParseForm.
func (r *Request) FormValue(key string) string {
if r.Form == nil {
r.ParseMultipartForm(defaultMaxMemory)
}
if vs := r.Form[key]; len(vs) > 0 {
return vs[0]
}
return ""
}
// PostFormValue returns the first value for the named component of the POST
// or PUT request body. URL query parameters are ignored.
// PostFormValue calls ParseMultipartForm and ParseForm if necessary.
func (r *Request) PostFormValue(key string) string {
if r.PostForm == nil {
r.ParseMultipartForm(defaultMaxMemory)
}
if vs := r.PostForm[key]; len(vs) > 0 {
return vs[0]
}
return ""
}
// FormFile returns the first file for the provided form key.
// FormFile calls ParseMultipartForm and ParseForm if necessary.
func (r *Request) FormFile(key string) (multipart.File, *multipart.FileHeader, error) {
if r.MultipartForm == multipartByReader {
return nil, nil, errors.New("http: multipart handled by MultipartReader")
}
if r.MultipartForm == nil {
err := r.ParseMultipartForm(defaultMaxMemory)
if err != nil {
return nil, nil, err
}
}
if r.MultipartForm != nil && r.MultipartForm.File != nil {
if fhs := r.MultipartForm.File[key]; len(fhs) > 0 {
f, err := fhs[0].Open()
return f, fhs[0], err
}
}
return nil, nil, ErrMissingFile
}
func (r *Request) expectsContinue() bool {
return hasToken(r.Header.get("Expect"), "100-continue")
}
func (r *Request) wantsHttp10KeepAlive() bool {
if r.ProtoMajor != 1 || r.ProtoMinor != 0 {
return false
}
return hasToken(r.Header.get("Connection"), "keep-alive")
}
func (r *Request) wantsClose() bool {
return hasToken(r.Header.get("Connection"), "close")
}
func (r *Request) closeBody() {
if r.Body != nil {
r.Body.Close()
}
}

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@ -0,0 +1,291 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// HTTP Response reading and parsing.
package http
import (
"bufio"
"bytes"
"errors"
"github.com/masterzen/azure-sdk-for-go/core/tls"
"io"
"net/textproto"
"net/url"
"strconv"
"strings"
)
var respExcludeHeader = map[string]bool{
"Content-Length": true,
"Transfer-Encoding": true,
"Trailer": true,
}
// Response represents the response from an HTTP request.
//
type Response struct {
Status string // e.g. "200 OK"
StatusCode int // e.g. 200
Proto string // e.g. "HTTP/1.0"
ProtoMajor int // e.g. 1
ProtoMinor int // e.g. 0
// Header maps header keys to values. If the response had multiple
// headers with the same key, they may be concatenated, with comma
// delimiters. (Section 4.2 of RFC 2616 requires that multiple headers
// be semantically equivalent to a comma-delimited sequence.) Values
// duplicated by other fields in this struct (e.g., ContentLength) are
// omitted from Header.
//
// Keys in the map are canonicalized (see CanonicalHeaderKey).
Header Header
// Body represents the response body.
//
// The http Client and Transport guarantee that Body is always
// non-nil, even on responses without a body or responses with
// a zero-length body. It is the caller's responsibility to
// close Body.
//
// The Body is automatically dechunked if the server replied
// with a "chunked" Transfer-Encoding.
Body io.ReadCloser
// ContentLength records the length of the associated content. The
// value -1 indicates that the length is unknown. Unless Request.Method
// is "HEAD", values >= 0 indicate that the given number of bytes may
// be read from Body.
ContentLength int64
// Contains transfer encodings from outer-most to inner-most. Value is
// nil, means that "identity" encoding is used.
TransferEncoding []string
// Close records whether the header directed that the connection be
// closed after reading Body. The value is advice for clients: neither
// ReadResponse nor Response.Write ever closes a connection.
Close bool
// Trailer maps trailer keys to values, in the same
// format as the header.
Trailer Header
// The Request that was sent to obtain this Response.
// Request's Body is nil (having already been consumed).
// This is only populated for Client requests.
Request *Request
// TLS contains information about the TLS connection on which the
// response was received. It is nil for unencrypted responses.
// The pointer is shared between responses and should not be
// modified.
TLS *tls.ConnectionState
}
// Cookies parses and returns the cookies set in the Set-Cookie headers.
func (r *Response) Cookies() []*Cookie {
return readSetCookies(r.Header)
}
var ErrNoLocation = errors.New("http: no Location header in response")
// Location returns the URL of the response's "Location" header,
// if present. Relative redirects are resolved relative to
// the Response's Request. ErrNoLocation is returned if no
// Location header is present.
func (r *Response) Location() (*url.URL, error) {
lv := r.Header.Get("Location")
if lv == "" {
return nil, ErrNoLocation
}
if r.Request != nil && r.Request.URL != nil {
return r.Request.URL.Parse(lv)
}
return url.Parse(lv)
}
// ReadResponse reads and returns an HTTP response from r.
// The req parameter optionally specifies the Request that corresponds
// to this Response. If nil, a GET request is assumed.
// Clients must call resp.Body.Close when finished reading resp.Body.
// After that call, clients can inspect resp.Trailer to find key/value
// pairs included in the response trailer.
func ReadResponse(r *bufio.Reader, req *Request) (*Response, error) {
tp := textproto.NewReader(r)
resp := &Response{
Request: req,
}
// Parse the first line of the response.
line, err := tp.ReadLine()
if err != nil {
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
return nil, err
}
f := strings.SplitN(line, " ", 3)
if len(f) < 2 {
return nil, &badStringError{"malformed HTTP response", line}
}
reasonPhrase := ""
if len(f) > 2 {
reasonPhrase = f[2]
}
resp.Status = f[1] + " " + reasonPhrase
resp.StatusCode, err = strconv.Atoi(f[1])
if err != nil {
return nil, &badStringError{"malformed HTTP status code", f[1]}
}
resp.Proto = f[0]
var ok bool
if resp.ProtoMajor, resp.ProtoMinor, ok = ParseHTTPVersion(resp.Proto); !ok {
return nil, &badStringError{"malformed HTTP version", resp.Proto}
}
// Parse the response headers.
mimeHeader, err := tp.ReadMIMEHeader()
if err != nil {
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
return nil, err
}
resp.Header = Header(mimeHeader)
fixPragmaCacheControl(resp.Header)
err = readTransfer(resp, r)
if err != nil {
return nil, err
}
return resp, nil
}
// RFC2616: Should treat
// Pragma: no-cache
// like
// Cache-Control: no-cache
func fixPragmaCacheControl(header Header) {
if hp, ok := header["Pragma"]; ok && len(hp) > 0 && hp[0] == "no-cache" {
if _, presentcc := header["Cache-Control"]; !presentcc {
header["Cache-Control"] = []string{"no-cache"}
}
}
}
// ProtoAtLeast reports whether the HTTP protocol used
// in the response is at least major.minor.
func (r *Response) ProtoAtLeast(major, minor int) bool {
return r.ProtoMajor > major ||
r.ProtoMajor == major && r.ProtoMinor >= minor
}
// Writes the response (header, body and trailer) in wire format. This method
// consults the following fields of the response:
//
// StatusCode
// ProtoMajor
// ProtoMinor
// Request.Method
// TransferEncoding
// Trailer
// Body
// ContentLength
// Header, values for non-canonical keys will have unpredictable behavior
//
// Body is closed after it is sent.
func (r *Response) Write(w io.Writer) error {
// Status line
text := r.Status
if text == "" {
var ok bool
text, ok = statusText[r.StatusCode]
if !ok {
text = "status code " + strconv.Itoa(r.StatusCode)
}
}
protoMajor, protoMinor := strconv.Itoa(r.ProtoMajor), strconv.Itoa(r.ProtoMinor)
statusCode := strconv.Itoa(r.StatusCode) + " "
text = strings.TrimPrefix(text, statusCode)
if _, err := io.WriteString(w, "HTTP/"+protoMajor+"."+protoMinor+" "+statusCode+text+"\r\n"); err != nil {
return err
}
// Clone it, so we can modify r1 as needed.
r1 := new(Response)
*r1 = *r
if r1.ContentLength == 0 && r1.Body != nil {
// Is it actually 0 length? Or just unknown?
var buf [1]byte
n, err := r1.Body.Read(buf[:])
if err != nil && err != io.EOF {
return err
}
if n == 0 {
// Reset it to a known zero reader, in case underlying one
// is unhappy being read repeatedly.
r1.Body = eofReader
} else {
r1.ContentLength = -1
r1.Body = struct {
io.Reader
io.Closer
}{
io.MultiReader(bytes.NewReader(buf[:1]), r.Body),
r.Body,
}
}
}
// If we're sending a non-chunked HTTP/1.1 response without a
// content-length, the only way to do that is the old HTTP/1.0
// way, by noting the EOF with a connection close, so we need
// to set Close.
if r1.ContentLength == -1 && !r1.Close && r1.ProtoAtLeast(1, 1) && !chunked(r1.TransferEncoding) {
r1.Close = true
}
// Process Body,ContentLength,Close,Trailer
tw, err := newTransferWriter(r1)
if err != nil {
return err
}
err = tw.WriteHeader(w)
if err != nil {
return err
}
// Rest of header
err = r.Header.WriteSubset(w, respExcludeHeader)
if err != nil {
return err
}
// contentLengthAlreadySent may have been already sent for
// POST/PUT requests, even if zero length. See Issue 8180.
contentLengthAlreadySent := tw.shouldSendContentLength()
if r1.ContentLength == 0 && !chunked(r1.TransferEncoding) && !contentLengthAlreadySent {
if _, err := io.WriteString(w, "Content-Length: 0\r\n"); err != nil {
return err
}
}
// End-of-header
if _, err := io.WriteString(w, "\r\n"); err != nil {
return err
}
// Write body and trailer
err = tw.WriteBody(w)
if err != nil {
return err
}
// Success
return nil
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/server.go generated vendored Normal file
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vendor/github.com/masterzen/azure-sdk-for-go/core/http/sniff.go generated vendored Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"bytes"
"encoding/binary"
)
// The algorithm uses at most sniffLen bytes to make its decision.
const sniffLen = 512
// DetectContentType implements the algorithm described
// at http://mimesniff.spec.whatwg.org/ to determine the
// Content-Type of the given data. It considers at most the
// first 512 bytes of data. DetectContentType always returns
// a valid MIME type: if it cannot determine a more specific one, it
// returns "application/octet-stream".
func DetectContentType(data []byte) string {
if len(data) > sniffLen {
data = data[:sniffLen]
}
// Index of the first non-whitespace byte in data.
firstNonWS := 0
for ; firstNonWS < len(data) && isWS(data[firstNonWS]); firstNonWS++ {
}
for _, sig := range sniffSignatures {
if ct := sig.match(data, firstNonWS); ct != "" {
return ct
}
}
return "application/octet-stream" // fallback
}
func isWS(b byte) bool {
return bytes.IndexByte([]byte("\t\n\x0C\r "), b) != -1
}
type sniffSig interface {
// match returns the MIME type of the data, or "" if unknown.
match(data []byte, firstNonWS int) string
}
// Data matching the table in section 6.
var sniffSignatures = []sniffSig{
htmlSig("<!DOCTYPE HTML"),
htmlSig("<HTML"),
htmlSig("<HEAD"),
htmlSig("<SCRIPT"),
htmlSig("<IFRAME"),
htmlSig("<H1"),
htmlSig("<DIV"),
htmlSig("<FONT"),
htmlSig("<TABLE"),
htmlSig("<A"),
htmlSig("<STYLE"),
htmlSig("<TITLE"),
htmlSig("<B"),
htmlSig("<BODY"),
htmlSig("<BR"),
htmlSig("<P"),
htmlSig("<!--"),
&maskedSig{mask: []byte("\xFF\xFF\xFF\xFF\xFF"), pat: []byte("<?xml"), skipWS: true, ct: "text/xml; charset=utf-8"},
&exactSig{[]byte("%PDF-"), "application/pdf"},
&exactSig{[]byte("%!PS-Adobe-"), "application/postscript"},
// UTF BOMs.
&maskedSig{mask: []byte("\xFF\xFF\x00\x00"), pat: []byte("\xFE\xFF\x00\x00"), ct: "text/plain; charset=utf-16be"},
&maskedSig{mask: []byte("\xFF\xFF\x00\x00"), pat: []byte("\xFF\xFE\x00\x00"), ct: "text/plain; charset=utf-16le"},
&maskedSig{mask: []byte("\xFF\xFF\xFF\x00"), pat: []byte("\xEF\xBB\xBF\x00"), ct: "text/plain; charset=utf-8"},
&exactSig{[]byte("GIF87a"), "image/gif"},
&exactSig{[]byte("GIF89a"), "image/gif"},
&exactSig{[]byte("\x89\x50\x4E\x47\x0D\x0A\x1A\x0A"), "image/png"},
&exactSig{[]byte("\xFF\xD8\xFF"), "image/jpeg"},
&exactSig{[]byte("BM"), "image/bmp"},
&maskedSig{
mask: []byte("\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF"),
pat: []byte("RIFF\x00\x00\x00\x00WEBPVP"),
ct: "image/webp",
},
&exactSig{[]byte("\x00\x00\x01\x00"), "image/vnd.microsoft.icon"},
&exactSig{[]byte("\x4F\x67\x67\x53\x00"), "application/ogg"},
&maskedSig{
mask: []byte("\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF"),
pat: []byte("RIFF\x00\x00\x00\x00WAVE"),
ct: "audio/wave",
},
&exactSig{[]byte("\x1A\x45\xDF\xA3"), "video/webm"},
&exactSig{[]byte("\x52\x61\x72\x20\x1A\x07\x00"), "application/x-rar-compressed"},
&exactSig{[]byte("\x50\x4B\x03\x04"), "application/zip"},
&exactSig{[]byte("\x1F\x8B\x08"), "application/x-gzip"},
// TODO(dsymonds): Re-enable this when the spec is sorted w.r.t. MP4.
//mp4Sig(0),
textSig(0), // should be last
}
type exactSig struct {
sig []byte
ct string
}
func (e *exactSig) match(data []byte, firstNonWS int) string {
if bytes.HasPrefix(data, e.sig) {
return e.ct
}
return ""
}
type maskedSig struct {
mask, pat []byte
skipWS bool
ct string
}
func (m *maskedSig) match(data []byte, firstNonWS int) string {
if m.skipWS {
data = data[firstNonWS:]
}
if len(data) < len(m.mask) {
return ""
}
for i, mask := range m.mask {
db := data[i] & mask
if db != m.pat[i] {
return ""
}
}
return m.ct
}
type htmlSig []byte
func (h htmlSig) match(data []byte, firstNonWS int) string {
data = data[firstNonWS:]
if len(data) < len(h)+1 {
return ""
}
for i, b := range h {
db := data[i]
if 'A' <= b && b <= 'Z' {
db &= 0xDF
}
if b != db {
return ""
}
}
// Next byte must be space or right angle bracket.
if db := data[len(h)]; db != ' ' && db != '>' {
return ""
}
return "text/html; charset=utf-8"
}
type mp4Sig int
func (mp4Sig) match(data []byte, firstNonWS int) string {
// c.f. section 6.1.
if len(data) < 8 {
return ""
}
boxSize := int(binary.BigEndian.Uint32(data[:4]))
if boxSize%4 != 0 || len(data) < boxSize {
return ""
}
if !bytes.Equal(data[4:8], []byte("ftyp")) {
return ""
}
for st := 8; st < boxSize; st += 4 {
if st == 12 {
// minor version number
continue
}
seg := string(data[st : st+3])
switch seg {
case "mp4", "iso", "M4V", "M4P", "M4B":
return "video/mp4"
/* The remainder are not in the spec.
case "M4A":
return "audio/mp4"
case "3gp":
return "video/3gpp"
case "jp2":
return "image/jp2" // JPEG 2000
*/
}
}
return ""
}
type textSig int
func (textSig) match(data []byte, firstNonWS int) string {
// c.f. section 5, step 4.
for _, b := range data[firstNonWS:] {
switch {
case 0x00 <= b && b <= 0x08,
b == 0x0B,
0x0E <= b && b <= 0x1A,
0x1C <= b && b <= 0x1F:
return ""
}
}
return "text/plain; charset=utf-8"
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/status.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
// HTTP status codes, defined in RFC 2616.
const (
StatusContinue = 100
StatusSwitchingProtocols = 101
StatusOK = 200
StatusCreated = 201
StatusAccepted = 202
StatusNonAuthoritativeInfo = 203
StatusNoContent = 204
StatusResetContent = 205
StatusPartialContent = 206
StatusMultipleChoices = 300
StatusMovedPermanently = 301
StatusFound = 302
StatusSeeOther = 303
StatusNotModified = 304
StatusUseProxy = 305
StatusTemporaryRedirect = 307
StatusBadRequest = 400
StatusUnauthorized = 401
StatusPaymentRequired = 402
StatusForbidden = 403
StatusNotFound = 404
StatusMethodNotAllowed = 405
StatusNotAcceptable = 406
StatusProxyAuthRequired = 407
StatusRequestTimeout = 408
StatusConflict = 409
StatusGone = 410
StatusLengthRequired = 411
StatusPreconditionFailed = 412
StatusRequestEntityTooLarge = 413
StatusRequestURITooLong = 414
StatusUnsupportedMediaType = 415
StatusRequestedRangeNotSatisfiable = 416
StatusExpectationFailed = 417
StatusTeapot = 418
StatusInternalServerError = 500
StatusNotImplemented = 501
StatusBadGateway = 502
StatusServiceUnavailable = 503
StatusGatewayTimeout = 504
StatusHTTPVersionNotSupported = 505
// New HTTP status codes from RFC 6585. Not exported yet in Go 1.1.
// See discussion at https://codereview.appspot.com/7678043/
statusPreconditionRequired = 428
statusTooManyRequests = 429
statusRequestHeaderFieldsTooLarge = 431
statusNetworkAuthenticationRequired = 511
)
var statusText = map[int]string{
StatusContinue: "Continue",
StatusSwitchingProtocols: "Switching Protocols",
StatusOK: "OK",
StatusCreated: "Created",
StatusAccepted: "Accepted",
StatusNonAuthoritativeInfo: "Non-Authoritative Information",
StatusNoContent: "No Content",
StatusResetContent: "Reset Content",
StatusPartialContent: "Partial Content",
StatusMultipleChoices: "Multiple Choices",
StatusMovedPermanently: "Moved Permanently",
StatusFound: "Found",
StatusSeeOther: "See Other",
StatusNotModified: "Not Modified",
StatusUseProxy: "Use Proxy",
StatusTemporaryRedirect: "Temporary Redirect",
StatusBadRequest: "Bad Request",
StatusUnauthorized: "Unauthorized",
StatusPaymentRequired: "Payment Required",
StatusForbidden: "Forbidden",
StatusNotFound: "Not Found",
StatusMethodNotAllowed: "Method Not Allowed",
StatusNotAcceptable: "Not Acceptable",
StatusProxyAuthRequired: "Proxy Authentication Required",
StatusRequestTimeout: "Request Timeout",
StatusConflict: "Conflict",
StatusGone: "Gone",
StatusLengthRequired: "Length Required",
StatusPreconditionFailed: "Precondition Failed",
StatusRequestEntityTooLarge: "Request Entity Too Large",
StatusRequestURITooLong: "Request URI Too Long",
StatusUnsupportedMediaType: "Unsupported Media Type",
StatusRequestedRangeNotSatisfiable: "Requested Range Not Satisfiable",
StatusExpectationFailed: "Expectation Failed",
StatusTeapot: "I'm a teapot",
StatusInternalServerError: "Internal Server Error",
StatusNotImplemented: "Not Implemented",
StatusBadGateway: "Bad Gateway",
StatusServiceUnavailable: "Service Unavailable",
StatusGatewayTimeout: "Gateway Timeout",
StatusHTTPVersionNotSupported: "HTTP Version Not Supported",
statusPreconditionRequired: "Precondition Required",
statusTooManyRequests: "Too Many Requests",
statusRequestHeaderFieldsTooLarge: "Request Header Fields Too Large",
statusNetworkAuthenticationRequired: "Network Authentication Required",
}
// StatusText returns a text for the HTTP status code. It returns the empty
// string if the code is unknown.
func StatusText(code int) string {
return statusText[code]
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/transfer.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package http
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
"io/ioutil"
"net/textproto"
"sort"
"strconv"
"strings"
"sync"
)
type errorReader struct {
err error
}
func (r *errorReader) Read(p []byte) (n int, err error) {
return 0, r.err
}
// transferWriter inspects the fields of a user-supplied Request or Response,
// sanitizes them without changing the user object and provides methods for
// writing the respective header, body and trailer in wire format.
type transferWriter struct {
Method string
Body io.Reader
BodyCloser io.Closer
ResponseToHEAD bool
ContentLength int64 // -1 means unknown, 0 means exactly none
Close bool
TransferEncoding []string
Trailer Header
}
func newTransferWriter(r interface{}) (t *transferWriter, err error) {
t = &transferWriter{}
// Extract relevant fields
atLeastHTTP11 := false
switch rr := r.(type) {
case *Request:
if rr.ContentLength != 0 && rr.Body == nil {
return nil, fmt.Errorf("http: Request.ContentLength=%d with nil Body", rr.ContentLength)
}
t.Method = rr.Method
t.Body = rr.Body
t.BodyCloser = rr.Body
t.ContentLength = rr.ContentLength
t.Close = rr.Close
t.TransferEncoding = rr.TransferEncoding
t.Trailer = rr.Trailer
atLeastHTTP11 = rr.ProtoAtLeast(1, 1)
if t.Body != nil && len(t.TransferEncoding) == 0 && atLeastHTTP11 {
if t.ContentLength == 0 {
// Test to see if it's actually zero or just unset.
var buf [1]byte
n, rerr := io.ReadFull(t.Body, buf[:])
if rerr != nil && rerr != io.EOF {
t.ContentLength = -1
t.Body = &errorReader{rerr}
} else if n == 1 {
// Oh, guess there is data in this Body Reader after all.
// The ContentLength field just wasn't set.
// Stich the Body back together again, re-attaching our
// consumed byte.
t.ContentLength = -1
t.Body = io.MultiReader(bytes.NewReader(buf[:]), t.Body)
} else {
// Body is actually empty.
t.Body = nil
t.BodyCloser = nil
}
}
if t.ContentLength < 0 {
t.TransferEncoding = []string{"chunked"}
}
}
case *Response:
if rr.Request != nil {
t.Method = rr.Request.Method
}
t.Body = rr.Body
t.BodyCloser = rr.Body
t.ContentLength = rr.ContentLength
t.Close = rr.Close
t.TransferEncoding = rr.TransferEncoding
t.Trailer = rr.Trailer
atLeastHTTP11 = rr.ProtoAtLeast(1, 1)
t.ResponseToHEAD = noBodyExpected(t.Method)
}
// Sanitize Body,ContentLength,TransferEncoding
if t.ResponseToHEAD {
t.Body = nil
if chunked(t.TransferEncoding) {
t.ContentLength = -1
}
} else {
if !atLeastHTTP11 || t.Body == nil {
t.TransferEncoding = nil
}
if chunked(t.TransferEncoding) {
t.ContentLength = -1
} else if t.Body == nil { // no chunking, no body
t.ContentLength = 0
}
}
// Sanitize Trailer
if !chunked(t.TransferEncoding) {
t.Trailer = nil
}
return t, nil
}
func noBodyExpected(requestMethod string) bool {
return requestMethod == "HEAD"
}
func (t *transferWriter) shouldSendContentLength() bool {
if chunked(t.TransferEncoding) {
return false
}
if t.ContentLength > 0 {
return true
}
// Many servers expect a Content-Length for these methods
if t.Method == "POST" || t.Method == "PUT" {
return true
}
if t.ContentLength == 0 && isIdentity(t.TransferEncoding) {
return true
}
return false
}
func (t *transferWriter) WriteHeader(w io.Writer) error {
if t.Close {
if _, err := io.WriteString(w, "Connection: close\r\n"); err != nil {
return err
}
}
// Write Content-Length and/or Transfer-Encoding whose values are a
// function of the sanitized field triple (Body, ContentLength,
// TransferEncoding)
if t.shouldSendContentLength() {
if _, err := io.WriteString(w, "Content-Length: "); err != nil {
return err
}
if _, err := io.WriteString(w, strconv.FormatInt(t.ContentLength, 10)+"\r\n"); err != nil {
return err
}
} else if chunked(t.TransferEncoding) {
if _, err := io.WriteString(w, "Transfer-Encoding: chunked\r\n"); err != nil {
return err
}
}
// Write Trailer header
if t.Trailer != nil {
keys := make([]string, 0, len(t.Trailer))
for k := range t.Trailer {
k = CanonicalHeaderKey(k)
switch k {
case "Transfer-Encoding", "Trailer", "Content-Length":
return &badStringError{"invalid Trailer key", k}
}
keys = append(keys, k)
}
if len(keys) > 0 {
sort.Strings(keys)
// TODO: could do better allocation-wise here, but trailers are rare,
// so being lazy for now.
if _, err := io.WriteString(w, "Trailer: "+strings.Join(keys, ",")+"\r\n"); err != nil {
return err
}
}
}
return nil
}
func (t *transferWriter) WriteBody(w io.Writer) error {
var err error
var ncopy int64
// Write body
if t.Body != nil {
if chunked(t.TransferEncoding) {
cw := newChunkedWriter(w)
_, err = io.Copy(cw, t.Body)
if err == nil {
err = cw.Close()
}
} else if t.ContentLength == -1 {
ncopy, err = io.Copy(w, t.Body)
} else {
ncopy, err = io.Copy(w, io.LimitReader(t.Body, t.ContentLength))
if err != nil {
return err
}
var nextra int64
nextra, err = io.Copy(ioutil.Discard, t.Body)
ncopy += nextra
}
if err != nil {
return err
}
if err = t.BodyCloser.Close(); err != nil {
return err
}
}
if !t.ResponseToHEAD && t.ContentLength != -1 && t.ContentLength != ncopy {
return fmt.Errorf("http: Request.ContentLength=%d with Body length %d",
t.ContentLength, ncopy)
}
// TODO(petar): Place trailer writer code here.
if chunked(t.TransferEncoding) {
// Write Trailer header
if t.Trailer != nil {
if err := t.Trailer.Write(w); err != nil {
return err
}
}
// Last chunk, empty trailer
_, err = io.WriteString(w, "\r\n")
}
return err
}
type transferReader struct {
// Input
Header Header
StatusCode int
RequestMethod string
ProtoMajor int
ProtoMinor int
// Output
Body io.ReadCloser
ContentLength int64
TransferEncoding []string
Close bool
Trailer Header
}
// bodyAllowedForStatus reports whether a given response status code
// permits a body. See RFC2616, section 4.4.
func bodyAllowedForStatus(status int) bool {
switch {
case status >= 100 && status <= 199:
return false
case status == 204:
return false
case status == 304:
return false
}
return true
}
var (
suppressedHeaders304 = []string{"Content-Type", "Content-Length", "Transfer-Encoding"}
suppressedHeadersNoBody = []string{"Content-Length", "Transfer-Encoding"}
)
func suppressedHeaders(status int) []string {
switch {
case status == 304:
// RFC 2616 section 10.3.5: "the response MUST NOT include other entity-headers"
return suppressedHeaders304
case !bodyAllowedForStatus(status):
return suppressedHeadersNoBody
}
return nil
}
// msg is *Request or *Response.
func readTransfer(msg interface{}, r *bufio.Reader) (err error) {
t := &transferReader{RequestMethod: "GET"}
// Unify input
isResponse := false
switch rr := msg.(type) {
case *Response:
t.Header = rr.Header
t.StatusCode = rr.StatusCode
t.ProtoMajor = rr.ProtoMajor
t.ProtoMinor = rr.ProtoMinor
t.Close = shouldClose(t.ProtoMajor, t.ProtoMinor, t.Header)
isResponse = true
if rr.Request != nil {
t.RequestMethod = rr.Request.Method
}
case *Request:
t.Header = rr.Header
t.ProtoMajor = rr.ProtoMajor
t.ProtoMinor = rr.ProtoMinor
// Transfer semantics for Requests are exactly like those for
// Responses with status code 200, responding to a GET method
t.StatusCode = 200
default:
panic("unexpected type")
}
// Default to HTTP/1.1
if t.ProtoMajor == 0 && t.ProtoMinor == 0 {
t.ProtoMajor, t.ProtoMinor = 1, 1
}
// Transfer encoding, content length
t.TransferEncoding, err = fixTransferEncoding(t.RequestMethod, t.Header)
if err != nil {
return err
}
realLength, err := fixLength(isResponse, t.StatusCode, t.RequestMethod, t.Header, t.TransferEncoding)
if err != nil {
return err
}
if isResponse && t.RequestMethod == "HEAD" {
if n, err := parseContentLength(t.Header.get("Content-Length")); err != nil {
return err
} else {
t.ContentLength = n
}
} else {
t.ContentLength = realLength
}
// Trailer
t.Trailer, err = fixTrailer(t.Header, t.TransferEncoding)
if err != nil {
return err
}
// If there is no Content-Length or chunked Transfer-Encoding on a *Response
// and the status is not 1xx, 204 or 304, then the body is unbounded.
// See RFC2616, section 4.4.
switch msg.(type) {
case *Response:
if realLength == -1 &&
!chunked(t.TransferEncoding) &&
bodyAllowedForStatus(t.StatusCode) {
// Unbounded body.
t.Close = true
}
}
// Prepare body reader. ContentLength < 0 means chunked encoding
// or close connection when finished, since multipart is not supported yet
switch {
case chunked(t.TransferEncoding):
if noBodyExpected(t.RequestMethod) {
t.Body = eofReader
} else {
t.Body = &body{src: newChunkedReader(r), hdr: msg, r: r, closing: t.Close}
}
case realLength == 0:
t.Body = eofReader
case realLength > 0:
t.Body = &body{src: io.LimitReader(r, realLength), closing: t.Close}
default:
// realLength < 0, i.e. "Content-Length" not mentioned in header
if t.Close {
// Close semantics (i.e. HTTP/1.0)
t.Body = &body{src: r, closing: t.Close}
} else {
// Persistent connection (i.e. HTTP/1.1)
t.Body = eofReader
}
}
// Unify output
switch rr := msg.(type) {
case *Request:
rr.Body = t.Body
rr.ContentLength = t.ContentLength
rr.TransferEncoding = t.TransferEncoding
rr.Close = t.Close
rr.Trailer = t.Trailer
case *Response:
rr.Body = t.Body
rr.ContentLength = t.ContentLength
rr.TransferEncoding = t.TransferEncoding
rr.Close = t.Close
rr.Trailer = t.Trailer
}
return nil
}
// Checks whether chunked is part of the encodings stack
func chunked(te []string) bool { return len(te) > 0 && te[0] == "chunked" }
// Checks whether the encoding is explicitly "identity".
func isIdentity(te []string) bool { return len(te) == 1 && te[0] == "identity" }
// Sanitize transfer encoding
func fixTransferEncoding(requestMethod string, header Header) ([]string, error) {
raw, present := header["Transfer-Encoding"]
if !present {
return nil, nil
}
delete(header, "Transfer-Encoding")
encodings := strings.Split(raw[0], ",")
te := make([]string, 0, len(encodings))
// TODO: Even though we only support "identity" and "chunked"
// encodings, the loop below is designed with foresight. One
// invariant that must be maintained is that, if present,
// chunked encoding must always come first.
for _, encoding := range encodings {
encoding = strings.ToLower(strings.TrimSpace(encoding))
// "identity" encoding is not recorded
if encoding == "identity" {
break
}
if encoding != "chunked" {
return nil, &badStringError{"unsupported transfer encoding", encoding}
}
te = te[0 : len(te)+1]
te[len(te)-1] = encoding
}
if len(te) > 1 {
return nil, &badStringError{"too many transfer encodings", strings.Join(te, ",")}
}
if len(te) > 0 {
// Chunked encoding trumps Content-Length. See RFC 2616
// Section 4.4. Currently len(te) > 0 implies chunked
// encoding.
delete(header, "Content-Length")
return te, nil
}
return nil, nil
}
// Determine the expected body length, using RFC 2616 Section 4.4. This
// function is not a method, because ultimately it should be shared by
// ReadResponse and ReadRequest.
func fixLength(isResponse bool, status int, requestMethod string, header Header, te []string) (int64, error) {
// Logic based on response type or status
if noBodyExpected(requestMethod) {
return 0, nil
}
if status/100 == 1 {
return 0, nil
}
switch status {
case 204, 304:
return 0, nil
}
// Logic based on Transfer-Encoding
if chunked(te) {
return -1, nil
}
// Logic based on Content-Length
cl := strings.TrimSpace(header.get("Content-Length"))
if cl != "" {
n, err := parseContentLength(cl)
if err != nil {
return -1, err
}
return n, nil
} else {
header.Del("Content-Length")
}
if !isResponse && requestMethod == "GET" {
// RFC 2616 doesn't explicitly permit nor forbid an
// entity-body on a GET request so we permit one if
// declared, but we default to 0 here (not -1 below)
// if there's no mention of a body.
return 0, nil
}
// Body-EOF logic based on other methods (like closing, or chunked coding)
return -1, nil
}
// Determine whether to hang up after sending a request and body, or
// receiving a response and body
// 'header' is the request headers
func shouldClose(major, minor int, header Header) bool {
if major < 1 {
return true
} else if major == 1 && minor == 0 {
if !strings.Contains(strings.ToLower(header.get("Connection")), "keep-alive") {
return true
}
return false
} else {
// TODO: Should split on commas, toss surrounding white space,
// and check each field.
if strings.ToLower(header.get("Connection")) == "close" {
header.Del("Connection")
return true
}
}
return false
}
// Parse the trailer header
func fixTrailer(header Header, te []string) (Header, error) {
raw := header.get("Trailer")
if raw == "" {
return nil, nil
}
header.Del("Trailer")
trailer := make(Header)
keys := strings.Split(raw, ",")
for _, key := range keys {
key = CanonicalHeaderKey(strings.TrimSpace(key))
switch key {
case "Transfer-Encoding", "Trailer", "Content-Length":
return nil, &badStringError{"bad trailer key", key}
}
trailer[key] = nil
}
if len(trailer) == 0 {
return nil, nil
}
if !chunked(te) {
// Trailer and no chunking
return nil, ErrUnexpectedTrailer
}
return trailer, nil
}
// body turns a Reader into a ReadCloser.
// Close ensures that the body has been fully read
// and then reads the trailer if necessary.
type body struct {
src io.Reader
hdr interface{} // non-nil (Response or Request) value means read trailer
r *bufio.Reader // underlying wire-format reader for the trailer
closing bool // is the connection to be closed after reading body?
mu sync.Mutex // guards closed, and calls to Read and Close
closed bool
}
// ErrBodyReadAfterClose is returned when reading a Request or Response
// Body after the body has been closed. This typically happens when the body is
// read after an HTTP Handler calls WriteHeader or Write on its
// ResponseWriter.
var ErrBodyReadAfterClose = errors.New("http: invalid Read on closed Body")
func (b *body) Read(p []byte) (n int, err error) {
b.mu.Lock()
defer b.mu.Unlock()
if b.closed {
return 0, ErrBodyReadAfterClose
}
return b.readLocked(p)
}
// Must hold b.mu.
func (b *body) readLocked(p []byte) (n int, err error) {
n, err = b.src.Read(p)
if err == io.EOF {
// Chunked case. Read the trailer.
if b.hdr != nil {
if e := b.readTrailer(); e != nil {
err = e
}
b.hdr = nil
} else {
// If the server declared the Content-Length, our body is a LimitedReader
// and we need to check whether this EOF arrived early.
if lr, ok := b.src.(*io.LimitedReader); ok && lr.N > 0 {
err = io.ErrUnexpectedEOF
}
}
}
// If we can return an EOF here along with the read data, do
// so. This is optional per the io.Reader contract, but doing
// so helps the HTTP transport code recycle its connection
// earlier (since it will see this EOF itself), even if the
// client doesn't do future reads or Close.
if err == nil && n > 0 {
if lr, ok := b.src.(*io.LimitedReader); ok && lr.N == 0 {
err = io.EOF
}
}
return n, err
}
var (
singleCRLF = []byte("\r\n")
doubleCRLF = []byte("\r\n\r\n")
)
func seeUpcomingDoubleCRLF(r *bufio.Reader) bool {
for peekSize := 4; ; peekSize++ {
// This loop stops when Peek returns an error,
// which it does when r's buffer has been filled.
buf, err := r.Peek(peekSize)
if bytes.HasSuffix(buf, doubleCRLF) {
return true
}
if err != nil {
break
}
}
return false
}
var errTrailerEOF = errors.New("http: unexpected EOF reading trailer")
func (b *body) readTrailer() error {
// The common case, since nobody uses trailers.
buf, err := b.r.Peek(2)
if bytes.Equal(buf, singleCRLF) {
b.r.ReadByte()
b.r.ReadByte()
return nil
}
if len(buf) < 2 {
return errTrailerEOF
}
if err != nil {
return err
}
// Make sure there's a header terminator coming up, to prevent
// a DoS with an unbounded size Trailer. It's not easy to
// slip in a LimitReader here, as textproto.NewReader requires
// a concrete *bufio.Reader. Also, we can't get all the way
// back up to our conn's LimitedReader that *might* be backing
// this bufio.Reader. Instead, a hack: we iteratively Peek up
// to the bufio.Reader's max size, looking for a double CRLF.
// This limits the trailer to the underlying buffer size, typically 4kB.
if !seeUpcomingDoubleCRLF(b.r) {
return errors.New("http: suspiciously long trailer after chunked body")
}
hdr, err := textproto.NewReader(b.r).ReadMIMEHeader()
if err != nil {
if err == io.EOF {
return errTrailerEOF
}
return err
}
switch rr := b.hdr.(type) {
case *Request:
mergeSetHeader(&rr.Trailer, Header(hdr))
case *Response:
mergeSetHeader(&rr.Trailer, Header(hdr))
}
return nil
}
func mergeSetHeader(dst *Header, src Header) {
if *dst == nil {
*dst = src
return
}
for k, vv := range src {
(*dst)[k] = vv
}
}
func (b *body) Close() error {
b.mu.Lock()
defer b.mu.Unlock()
if b.closed {
return nil
}
var err error
switch {
case b.hdr == nil && b.closing:
// no trailer and closing the connection next.
// no point in reading to EOF.
default:
// Fully consume the body, which will also lead to us reading
// the trailer headers after the body, if present.
_, err = io.Copy(ioutil.Discard, bodyLocked{b})
}
b.closed = true
return err
}
// bodyLocked is a io.Reader reading from a *body when its mutex is
// already held.
type bodyLocked struct {
b *body
}
func (bl bodyLocked) Read(p []byte) (n int, err error) {
if bl.b.closed {
return 0, ErrBodyReadAfterClose
}
return bl.b.readLocked(p)
}
// parseContentLength trims whitespace from s and returns -1 if no value
// is set, or the value if it's >= 0.
func parseContentLength(cl string) (int64, error) {
cl = strings.TrimSpace(cl)
if cl == "" {
return -1, nil
}
n, err := strconv.ParseInt(cl, 10, 64)
if err != nil || n < 0 {
return 0, &badStringError{"bad Content-Length", cl}
}
return n, nil
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/http/transport.go generated vendored Normal file
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141
vendor/github.com/masterzen/azure-sdk-for-go/core/http/triv.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"bytes"
"expvar"
"flag"
"fmt"
"io"
"log"
"net/http"
"os"
"os/exec"
"strconv"
"sync"
)
// hello world, the web server
var helloRequests = expvar.NewInt("hello-requests")
func HelloServer(w http.ResponseWriter, req *http.Request) {
helloRequests.Add(1)
io.WriteString(w, "hello, world!\n")
}
// Simple counter server. POSTing to it will set the value.
type Counter struct {
mu sync.Mutex // protects n
n int
}
// This makes Counter satisfy the expvar.Var interface, so we can export
// it directly.
func (ctr *Counter) String() string {
ctr.mu.Lock()
defer ctr.mu.Unlock()
return fmt.Sprintf("%d", ctr.n)
}
func (ctr *Counter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
ctr.mu.Lock()
defer ctr.mu.Unlock()
switch req.Method {
case "GET":
ctr.n++
case "POST":
buf := new(bytes.Buffer)
io.Copy(buf, req.Body)
body := buf.String()
if n, err := strconv.Atoi(body); err != nil {
fmt.Fprintf(w, "bad POST: %v\nbody: [%v]\n", err, body)
} else {
ctr.n = n
fmt.Fprint(w, "counter reset\n")
}
}
fmt.Fprintf(w, "counter = %d\n", ctr.n)
}
// simple flag server
var booleanflag = flag.Bool("boolean", true, "another flag for testing")
func FlagServer(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
fmt.Fprint(w, "Flags:\n")
flag.VisitAll(func(f *flag.Flag) {
if f.Value.String() != f.DefValue {
fmt.Fprintf(w, "%s = %s [default = %s]\n", f.Name, f.Value.String(), f.DefValue)
} else {
fmt.Fprintf(w, "%s = %s\n", f.Name, f.Value.String())
}
})
}
// simple argument server
func ArgServer(w http.ResponseWriter, req *http.Request) {
for _, s := range os.Args {
fmt.Fprint(w, s, " ")
}
}
// a channel (just for the fun of it)
type Chan chan int
func ChanCreate() Chan {
c := make(Chan)
go func(c Chan) {
for x := 0; ; x++ {
c <- x
}
}(c)
return c
}
func (ch Chan) ServeHTTP(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, fmt.Sprintf("channel send #%d\n", <-ch))
}
// exec a program, redirecting output
func DateServer(rw http.ResponseWriter, req *http.Request) {
rw.Header().Set("Content-Type", "text/plain; charset=utf-8")
date, err := exec.Command("/bin/date").Output()
if err != nil {
http.Error(rw, err.Error(), 500)
return
}
rw.Write(date)
}
func Logger(w http.ResponseWriter, req *http.Request) {
log.Print(req.URL)
http.Error(w, "oops", 404)
}
var webroot = flag.String("root", os.Getenv("HOME"), "web root directory")
func main() {
flag.Parse()
// The counter is published as a variable directly.
ctr := new(Counter)
expvar.Publish("counter", ctr)
http.Handle("/counter", ctr)
http.Handle("/", http.HandlerFunc(Logger))
http.Handle("/go/", http.StripPrefix("/go/", http.FileServer(http.Dir(*webroot))))
http.Handle("/chan", ChanCreate())
http.HandleFunc("/flags", FlagServer)
http.HandleFunc("/args", ArgServer)
http.HandleFunc("/go/hello", HelloServer)
http.HandleFunc("/date", DateServer)
err := http.ListenAndServe(":12345", nil)
if err != nil {
log.Panicln("ListenAndServe:", err)
}
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/alert.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import "strconv"
type alert uint8
const (
// alert level
alertLevelWarning = 1
alertLevelError = 2
)
const (
alertCloseNotify alert = 0
alertUnexpectedMessage alert = 10
alertBadRecordMAC alert = 20
alertDecryptionFailed alert = 21
alertRecordOverflow alert = 22
alertDecompressionFailure alert = 30
alertHandshakeFailure alert = 40
alertBadCertificate alert = 42
alertUnsupportedCertificate alert = 43
alertCertificateRevoked alert = 44
alertCertificateExpired alert = 45
alertCertificateUnknown alert = 46
alertIllegalParameter alert = 47
alertUnknownCA alert = 48
alertAccessDenied alert = 49
alertDecodeError alert = 50
alertDecryptError alert = 51
alertProtocolVersion alert = 70
alertInsufficientSecurity alert = 71
alertInternalError alert = 80
alertUserCanceled alert = 90
alertNoRenegotiation alert = 100
)
var alertText = map[alert]string{
alertCloseNotify: "close notify",
alertUnexpectedMessage: "unexpected message",
alertBadRecordMAC: "bad record MAC",
alertDecryptionFailed: "decryption failed",
alertRecordOverflow: "record overflow",
alertDecompressionFailure: "decompression failure",
alertHandshakeFailure: "handshake failure",
alertBadCertificate: "bad certificate",
alertUnsupportedCertificate: "unsupported certificate",
alertCertificateRevoked: "revoked certificate",
alertCertificateExpired: "expired certificate",
alertCertificateUnknown: "unknown certificate",
alertIllegalParameter: "illegal parameter",
alertUnknownCA: "unknown certificate authority",
alertAccessDenied: "access denied",
alertDecodeError: "error decoding message",
alertDecryptError: "error decrypting message",
alertProtocolVersion: "protocol version not supported",
alertInsufficientSecurity: "insufficient security level",
alertInternalError: "internal error",
alertUserCanceled: "user canceled",
alertNoRenegotiation: "no renegotiation",
}
func (e alert) String() string {
s, ok := alertText[e]
if ok {
return s
}
return "alert(" + strconv.Itoa(int(e)) + ")"
}
func (e alert) Error() string {
return e.String()
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/cipher_suites.go generated vendored Normal file
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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"crypto/aes"
"crypto/cipher"
"crypto/des"
"crypto/hmac"
"crypto/rc4"
"crypto/sha1"
"crypto/x509"
"hash"
)
// a keyAgreement implements the client and server side of a TLS key agreement
// protocol by generating and processing key exchange messages.
type keyAgreement interface {
// On the server side, the first two methods are called in order.
// In the case that the key agreement protocol doesn't use a
// ServerKeyExchange message, generateServerKeyExchange can return nil,
// nil.
generateServerKeyExchange(*Config, *Certificate, *clientHelloMsg, *serverHelloMsg) (*serverKeyExchangeMsg, error)
processClientKeyExchange(*Config, *Certificate, *clientKeyExchangeMsg, uint16) ([]byte, error)
// On the client side, the next two methods are called in order.
// This method may not be called if the server doesn't send a
// ServerKeyExchange message.
processServerKeyExchange(*Config, *clientHelloMsg, *serverHelloMsg, *x509.Certificate, *serverKeyExchangeMsg) error
generateClientKeyExchange(*Config, *clientHelloMsg, *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error)
}
const (
// suiteECDH indicates that the cipher suite involves elliptic curve
// Diffie-Hellman. This means that it should only be selected when the
// client indicates that it supports ECC with a curve and point format
// that we're happy with.
suiteECDHE = 1 << iota
// suiteECDSA indicates that the cipher suite involves an ECDSA
// signature and therefore may only be selected when the server's
// certificate is ECDSA. If this is not set then the cipher suite is
// RSA based.
suiteECDSA
// suiteTLS12 indicates that the cipher suite should only be advertised
// and accepted when using TLS 1.2.
suiteTLS12
)
// A cipherSuite is a specific combination of key agreement, cipher and MAC
// function. All cipher suites currently assume RSA key agreement.
type cipherSuite struct {
id uint16
// the lengths, in bytes, of the key material needed for each component.
keyLen int
macLen int
ivLen int
ka func(version uint16) keyAgreement
// flags is a bitmask of the suite* values, above.
flags int
cipher func(key, iv []byte, isRead bool) interface{}
mac func(version uint16, macKey []byte) macFunction
aead func(key, fixedNonce []byte) cipher.AEAD
}
var cipherSuites = []*cipherSuite{
// Ciphersuite order is chosen so that ECDHE comes before plain RSA
// and RC4 comes before AES (because of the Lucky13 attack).
{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadAESGCM},
{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECDSA | suiteTLS12, nil, nil, aeadAESGCM},
{TLS_ECDHE_RSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheRSAKA, suiteECDHE, cipherRC4, macSHA1, nil},
{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheECDSAKA, suiteECDHE | suiteECDSA, cipherRC4, macSHA1, nil},
{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECDSA, cipherAES, macSHA1, nil},
{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECDSA, cipherAES, macSHA1, nil},
{TLS_RSA_WITH_RC4_128_SHA, 16, 20, 0, rsaKA, 0, cipherRC4, macSHA1, nil},
{TLS_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
{TLS_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, ecdheRSAKA, suiteECDHE, cipher3DES, macSHA1, nil},
{TLS_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, rsaKA, 0, cipher3DES, macSHA1, nil},
}
func cipherRC4(key, iv []byte, isRead bool) interface{} {
cipher, _ := rc4.NewCipher(key)
return cipher
}
func cipher3DES(key, iv []byte, isRead bool) interface{} {
block, _ := des.NewTripleDESCipher(key)
if isRead {
return cipher.NewCBCDecrypter(block, iv)
}
return cipher.NewCBCEncrypter(block, iv)
}
func cipherAES(key, iv []byte, isRead bool) interface{} {
block, _ := aes.NewCipher(key)
if isRead {
return cipher.NewCBCDecrypter(block, iv)
}
return cipher.NewCBCEncrypter(block, iv)
}
// macSHA1 returns a macFunction for the given protocol version.
func macSHA1(version uint16, key []byte) macFunction {
if version == VersionSSL30 {
mac := ssl30MAC{
h: sha1.New(),
key: make([]byte, len(key)),
}
copy(mac.key, key)
return mac
}
return tls10MAC{hmac.New(sha1.New, key)}
}
type macFunction interface {
Size() int
MAC(digestBuf, seq, header, data []byte) []byte
}
// fixedNonceAEAD wraps an AEAD and prefixes a fixed portion of the nonce to
// each call.
type fixedNonceAEAD struct {
// sealNonce and openNonce are buffers where the larger nonce will be
// constructed. Since a seal and open operation may be running
// concurrently, there is a separate buffer for each.
sealNonce, openNonce []byte
aead cipher.AEAD
}
func (f *fixedNonceAEAD) NonceSize() int { return 8 }
func (f *fixedNonceAEAD) Overhead() int { return f.aead.Overhead() }
func (f *fixedNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
copy(f.sealNonce[len(f.sealNonce)-8:], nonce)
return f.aead.Seal(out, f.sealNonce, plaintext, additionalData)
}
func (f *fixedNonceAEAD) Open(out, nonce, plaintext, additionalData []byte) ([]byte, error) {
copy(f.openNonce[len(f.openNonce)-8:], nonce)
return f.aead.Open(out, f.openNonce, plaintext, additionalData)
}
func aeadAESGCM(key, fixedNonce []byte) cipher.AEAD {
aes, err := aes.NewCipher(key)
if err != nil {
panic(err)
}
aead, err := cipher.NewGCM(aes)
if err != nil {
panic(err)
}
nonce1, nonce2 := make([]byte, 12), make([]byte, 12)
copy(nonce1, fixedNonce)
copy(nonce2, fixedNonce)
return &fixedNonceAEAD{nonce1, nonce2, aead}
}
// ssl30MAC implements the SSLv3 MAC function, as defined in
// www.mozilla.org/projects/security/pki/nss/ssl/draft302.txt section 5.2.3.1
type ssl30MAC struct {
h hash.Hash
key []byte
}
func (s ssl30MAC) Size() int {
return s.h.Size()
}
var ssl30Pad1 = [48]byte{0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36}
var ssl30Pad2 = [48]byte{0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c}
func (s ssl30MAC) MAC(digestBuf, seq, header, data []byte) []byte {
padLength := 48
if s.h.Size() == 20 {
padLength = 40
}
s.h.Reset()
s.h.Write(s.key)
s.h.Write(ssl30Pad1[:padLength])
s.h.Write(seq)
s.h.Write(header[:1])
s.h.Write(header[3:5])
s.h.Write(data)
digestBuf = s.h.Sum(digestBuf[:0])
s.h.Reset()
s.h.Write(s.key)
s.h.Write(ssl30Pad2[:padLength])
s.h.Write(digestBuf)
return s.h.Sum(digestBuf[:0])
}
// tls10MAC implements the TLS 1.0 MAC function. RFC 2246, section 6.2.3.
type tls10MAC struct {
h hash.Hash
}
func (s tls10MAC) Size() int {
return s.h.Size()
}
func (s tls10MAC) MAC(digestBuf, seq, header, data []byte) []byte {
s.h.Reset()
s.h.Write(seq)
s.h.Write(header)
s.h.Write(data)
return s.h.Sum(digestBuf[:0])
}
func rsaKA(version uint16) keyAgreement {
return rsaKeyAgreement{}
}
func ecdheECDSAKA(version uint16) keyAgreement {
return &ecdheKeyAgreement{
sigType: signatureECDSA,
version: version,
}
}
func ecdheRSAKA(version uint16) keyAgreement {
return &ecdheKeyAgreement{
sigType: signatureRSA,
version: version,
}
}
// mutualCipherSuite returns a cipherSuite given a list of supported
// ciphersuites and the id requested by the peer.
func mutualCipherSuite(have []uint16, want uint16) *cipherSuite {
for _, id := range have {
if id == want {
for _, suite := range cipherSuites {
if suite.id == want {
return suite
}
}
return nil
}
}
return nil
}
// A list of the possible cipher suite ids. Taken from
// http://www.iana.org/assignments/tls-parameters/tls-parameters.xml
const (
TLS_RSA_WITH_RC4_128_SHA uint16 = 0x0005
TLS_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0x000a
TLS_RSA_WITH_AES_128_CBC_SHA uint16 = 0x002f
TLS_RSA_WITH_AES_256_CBC_SHA uint16 = 0x0035
TLS_ECDHE_ECDSA_WITH_RC4_128_SHA uint16 = 0xc007
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA uint16 = 0xc009
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA uint16 = 0xc00a
TLS_ECDHE_RSA_WITH_RC4_128_SHA uint16 = 0xc011
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xc012
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA uint16 = 0xc013
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA uint16 = 0xc014
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0xc02f
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 uint16 = 0xc02b
)

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"crypto"
"crypto/rand"
"crypto/x509"
"io"
"math/big"
"strings"
"sync"
"time"
)
const (
VersionSSL30 = 0x0300
VersionTLS10 = 0x0301
VersionTLS11 = 0x0302
VersionTLS12 = 0x0303
)
const (
maxPlaintext = 16384 // maximum plaintext payload length
maxCiphertext = 16384 + 2048 // maximum ciphertext payload length
recordHeaderLen = 5 // record header length
maxHandshake = 65536 // maximum handshake we support (protocol max is 16 MB)
minVersion = VersionSSL30
maxVersion = VersionTLS12
)
// TLS record types.
type recordType uint8
const (
recordTypeChangeCipherSpec recordType = 20
recordTypeAlert recordType = 21
recordTypeHandshake recordType = 22
recordTypeApplicationData recordType = 23
)
// TLS handshake message types.
const (
typeHelloRequest uint8 = 0
typeClientHello uint8 = 1
typeServerHello uint8 = 2
typeNewSessionTicket uint8 = 4
typeCertificate uint8 = 11
typeServerKeyExchange uint8 = 12
typeCertificateRequest uint8 = 13
typeServerHelloDone uint8 = 14
typeCertificateVerify uint8 = 15
typeClientKeyExchange uint8 = 16
typeFinished uint8 = 20
typeCertificateStatus uint8 = 22
typeNextProtocol uint8 = 67 // Not IANA assigned
)
// TLS compression types.
const (
compressionNone uint8 = 0
)
// TLS extension numbers
var (
extensionServerName uint16 = 0
extensionStatusRequest uint16 = 5
extensionSupportedCurves uint16 = 10
extensionSupportedPoints uint16 = 11
extensionSignatureAlgorithms uint16 = 13
extensionSessionTicket uint16 = 35
extensionNextProtoNeg uint16 = 13172 // not IANA assigned
)
// TLS Elliptic Curves
// http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-8
var (
curveP256 uint16 = 23
curveP384 uint16 = 24
curveP521 uint16 = 25
)
// TLS Elliptic Curve Point Formats
// http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-9
var (
pointFormatUncompressed uint8 = 0
)
// TLS CertificateStatusType (RFC 3546)
const (
statusTypeOCSP uint8 = 1
)
// Certificate types (for certificateRequestMsg)
const (
certTypeRSASign = 1 // A certificate containing an RSA key
certTypeDSSSign = 2 // A certificate containing a DSA key
certTypeRSAFixedDH = 3 // A certificate containing a static DH key
certTypeDSSFixedDH = 4 // A certificate containing a static DH key
// See RFC4492 sections 3 and 5.5.
certTypeECDSASign = 64 // A certificate containing an ECDSA-capable public key, signed with ECDSA.
certTypeRSAFixedECDH = 65 // A certificate containing an ECDH-capable public key, signed with RSA.
certTypeECDSAFixedECDH = 66 // A certificate containing an ECDH-capable public key, signed with ECDSA.
// Rest of these are reserved by the TLS spec
)
// Hash functions for TLS 1.2 (See RFC 5246, section A.4.1)
const (
hashSHA1 uint8 = 2
hashSHA256 uint8 = 4
)
// Signature algorithms for TLS 1.2 (See RFC 5246, section A.4.1)
const (
signatureRSA uint8 = 1
signatureECDSA uint8 = 3
)
// signatureAndHash mirrors the TLS 1.2, SignatureAndHashAlgorithm struct. See
// RFC 5246, section A.4.1.
type signatureAndHash struct {
hash, signature uint8
}
// supportedSKXSignatureAlgorithms contains the signature and hash algorithms
// that the code advertises as supported in a TLS 1.2 ClientHello.
var supportedSKXSignatureAlgorithms = []signatureAndHash{
{hashSHA256, signatureRSA},
{hashSHA256, signatureECDSA},
{hashSHA1, signatureRSA},
{hashSHA1, signatureECDSA},
}
// supportedClientCertSignatureAlgorithms contains the signature and hash
// algorithms that the code advertises as supported in a TLS 1.2
// CertificateRequest.
var supportedClientCertSignatureAlgorithms = []signatureAndHash{
{hashSHA256, signatureRSA},
{hashSHA256, signatureECDSA},
}
// ConnectionState records basic TLS details about the connection.
type ConnectionState struct {
HandshakeComplete bool // TLS handshake is complete
DidResume bool // connection resumes a previous TLS connection
CipherSuite uint16 // cipher suite in use (TLS_RSA_WITH_RC4_128_SHA, ...)
NegotiatedProtocol string // negotiated next protocol (from Config.NextProtos)
NegotiatedProtocolIsMutual bool // negotiated protocol was advertised by server
ServerName string // server name requested by client, if any (server side only)
PeerCertificates []*x509.Certificate // certificate chain presented by remote peer
VerifiedChains [][]*x509.Certificate // verified chains built from PeerCertificates
}
// ClientAuthType declares the policy the server will follow for
// TLS Client Authentication.
type ClientAuthType int
const (
NoClientCert ClientAuthType = iota
RequestClientCert
RequireAnyClientCert
VerifyClientCertIfGiven
RequireAndVerifyClientCert
)
// A Config structure is used to configure a TLS client or server. After one
// has been passed to a TLS function it must not be modified.
type Config struct {
// Rand provides the source of entropy for nonces and RSA blinding.
// If Rand is nil, TLS uses the cryptographic random reader in package
// crypto/rand.
Rand io.Reader
// Time returns the current time as the number of seconds since the epoch.
// If Time is nil, TLS uses time.Now.
Time func() time.Time
// Certificates contains one or more certificate chains
// to present to the other side of the connection.
// Server configurations must include at least one certificate.
Certificates []Certificate
// NameToCertificate maps from a certificate name to an element of
// Certificates. Note that a certificate name can be of the form
// '*.example.com' and so doesn't have to be a domain name as such.
// See Config.BuildNameToCertificate
// The nil value causes the first element of Certificates to be used
// for all connections.
NameToCertificate map[string]*Certificate
// RootCAs defines the set of root certificate authorities
// that clients use when verifying server certificates.
// If RootCAs is nil, TLS uses the host's root CA set.
RootCAs *x509.CertPool
// NextProtos is a list of supported, application level protocols.
NextProtos []string
// ServerName is included in the client's handshake to support virtual
// hosting.
ServerName string
// ClientAuth determines the server's policy for
// TLS Client Authentication. The default is NoClientCert.
ClientAuth ClientAuthType
// ClientCAs defines the set of root certificate authorities
// that servers use if required to verify a client certificate
// by the policy in ClientAuth.
ClientCAs *x509.CertPool
// InsecureSkipVerify controls whether a client verifies the
// server's certificate chain and host name.
// If InsecureSkipVerify is true, TLS accepts any certificate
// presented by the server and any host name in that certificate.
// In this mode, TLS is susceptible to man-in-the-middle attacks.
// This should be used only for testing.
InsecureSkipVerify bool
// CipherSuites is a list of supported cipher suites. If CipherSuites
// is nil, TLS uses a list of suites supported by the implementation.
CipherSuites []uint16
// PreferServerCipherSuites controls whether the server selects the
// client's most preferred ciphersuite, or the server's most preferred
// ciphersuite. If true then the server's preference, as expressed in
// the order of elements in CipherSuites, is used.
PreferServerCipherSuites bool
// SessionTicketsDisabled may be set to true to disable session ticket
// (resumption) support.
SessionTicketsDisabled bool
// SessionTicketKey is used by TLS servers to provide session
// resumption. See RFC 5077. If zero, it will be filled with
// random data before the first server handshake.
//
// If multiple servers are terminating connections for the same host
// they should all have the same SessionTicketKey. If the
// SessionTicketKey leaks, previously recorded and future TLS
// connections using that key are compromised.
SessionTicketKey [32]byte
// MinVersion contains the minimum SSL/TLS version that is acceptable.
// If zero, then SSLv3 is taken as the minimum.
MinVersion uint16
// MaxVersion contains the maximum SSL/TLS version that is acceptable.
// If zero, then the maximum version supported by this package is used,
// which is currently TLS 1.2.
MaxVersion uint16
serverInitOnce sync.Once // guards calling (*Config).serverInit
}
func (c *Config) serverInit() {
if c.SessionTicketsDisabled {
return
}
// If the key has already been set then we have nothing to do.
for _, b := range c.SessionTicketKey {
if b != 0 {
return
}
}
if _, err := io.ReadFull(c.rand(), c.SessionTicketKey[:]); err != nil {
c.SessionTicketsDisabled = true
}
}
func (c *Config) rand() io.Reader {
r := c.Rand
if r == nil {
return rand.Reader
}
return r
}
func (c *Config) time() time.Time {
t := c.Time
if t == nil {
t = time.Now
}
return t()
}
func (c *Config) cipherSuites() []uint16 {
s := c.CipherSuites
if s == nil {
s = defaultCipherSuites()
}
return s
}
func (c *Config) minVersion() uint16 {
if c == nil || c.MinVersion == 0 {
return minVersion
}
return c.MinVersion
}
func (c *Config) maxVersion() uint16 {
if c == nil || c.MaxVersion == 0 {
return maxVersion
}
return c.MaxVersion
}
// mutualVersion returns the protocol version to use given the advertised
// version of the peer.
func (c *Config) mutualVersion(vers uint16) (uint16, bool) {
minVersion := c.minVersion()
maxVersion := c.maxVersion()
if vers < minVersion {
return 0, false
}
if vers > maxVersion {
vers = maxVersion
}
return vers, true
}
// getCertificateForName returns the best certificate for the given name,
// defaulting to the first element of c.Certificates if there are no good
// options.
func (c *Config) getCertificateForName(name string) *Certificate {
if len(c.Certificates) == 1 || c.NameToCertificate == nil {
// There's only one choice, so no point doing any work.
return &c.Certificates[0]
}
name = strings.ToLower(name)
for len(name) > 0 && name[len(name)-1] == '.' {
name = name[:len(name)-1]
}
if cert, ok := c.NameToCertificate[name]; ok {
return cert
}
// try replacing labels in the name with wildcards until we get a
// match.
labels := strings.Split(name, ".")
for i := range labels {
labels[i] = "*"
candidate := strings.Join(labels, ".")
if cert, ok := c.NameToCertificate[candidate]; ok {
return cert
}
}
// If nothing matches, return the first certificate.
return &c.Certificates[0]
}
// BuildNameToCertificate parses c.Certificates and builds c.NameToCertificate
// from the CommonName and SubjectAlternateName fields of each of the leaf
// certificates.
func (c *Config) BuildNameToCertificate() {
c.NameToCertificate = make(map[string]*Certificate)
for i := range c.Certificates {
cert := &c.Certificates[i]
x509Cert, err := x509.ParseCertificate(cert.Certificate[0])
if err != nil {
continue
}
if len(x509Cert.Subject.CommonName) > 0 {
c.NameToCertificate[x509Cert.Subject.CommonName] = cert
}
for _, san := range x509Cert.DNSNames {
c.NameToCertificate[san] = cert
}
}
}
// A Certificate is a chain of one or more certificates, leaf first.
type Certificate struct {
Certificate [][]byte
PrivateKey crypto.PrivateKey // supported types: *rsa.PrivateKey, *ecdsa.PrivateKey
// OCSPStaple contains an optional OCSP response which will be served
// to clients that request it.
OCSPStaple []byte
// Leaf is the parsed form of the leaf certificate, which may be
// initialized using x509.ParseCertificate to reduce per-handshake
// processing for TLS clients doing client authentication. If nil, the
// leaf certificate will be parsed as needed.
Leaf *x509.Certificate
}
// A TLS record.
type record struct {
contentType recordType
major, minor uint8
payload []byte
}
type handshakeMessage interface {
marshal() []byte
unmarshal([]byte) bool
}
// TODO(jsing): Make these available to both crypto/x509 and crypto/tls.
type dsaSignature struct {
R, S *big.Int
}
type ecdsaSignature dsaSignature
var emptyConfig Config
func defaultConfig() *Config {
return &emptyConfig
}
var (
once sync.Once
varDefaultCipherSuites []uint16
)
func defaultCipherSuites() []uint16 {
once.Do(initDefaultCipherSuites)
return varDefaultCipherSuites
}
func initDefaultCipherSuites() {
varDefaultCipherSuites = make([]uint16, len(cipherSuites))
for i, suite := range cipherSuites {
varDefaultCipherSuites[i] = suite.id
}
}

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Generate a self-signed X.509 certificate for a TLS server. Outputs to
// 'cert.pem' and 'key.pem' and will overwrite existing files.
package main
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"flag"
"fmt"
"log"
"math/big"
"net"
"os"
"strings"
"time"
)
var (
host = flag.String("host", "", "Comma-separated hostnames and IPs to generate a certificate for")
validFrom = flag.String("start-date", "", "Creation date formatted as Jan 1 15:04:05 2011")
validFor = flag.Duration("duration", 365*24*time.Hour, "Duration that certificate is valid for")
isCA = flag.Bool("ca", false, "whether this cert should be its own Certificate Authority")
rsaBits = flag.Int("rsa-bits", 2048, "Size of RSA key to generate")
)
func main() {
flag.Parse()
if len(*host) == 0 {
log.Fatalf("Missing required --host parameter")
}
priv, err := rsa.GenerateKey(rand.Reader, *rsaBits)
if err != nil {
log.Fatalf("failed to generate private key: %s", err)
return
}
var notBefore time.Time
if len(*validFrom) == 0 {
notBefore = time.Now()
} else {
notBefore, err = time.Parse("Jan 2 15:04:05 2006", *validFrom)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to parse creation date: %s\n", err)
os.Exit(1)
}
}
notAfter := notBefore.Add(*validFor)
// end of ASN.1 time
endOfTime := time.Date(2049, 12, 31, 23, 59, 59, 0, time.UTC)
if notAfter.After(endOfTime) {
notAfter = endOfTime
}
template := x509.Certificate{
SerialNumber: new(big.Int).SetInt64(0),
Subject: pkix.Name{
Organization: []string{"Acme Co"},
},
NotBefore: notBefore,
NotAfter: notAfter,
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
BasicConstraintsValid: true,
}
hosts := strings.Split(*host, ",")
for _, h := range hosts {
if ip := net.ParseIP(h); ip != nil {
template.IPAddresses = append(template.IPAddresses, ip)
} else {
template.DNSNames = append(template.DNSNames, h)
}
}
if *isCA {
template.IsCA = true
template.KeyUsage |= x509.KeyUsageCertSign
}
derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
if err != nil {
log.Fatalf("Failed to create certificate: %s", err)
return
}
certOut, err := os.Create("cert.pem")
if err != nil {
log.Fatalf("failed to open cert.pem for writing: %s", err)
return
}
pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
certOut.Close()
log.Print("written cert.pem\n")
keyOut, err := os.OpenFile("key.pem", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
log.Print("failed to open key.pem for writing:", err)
return
}
pem.Encode(keyOut, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
keyOut.Close()
log.Print("written key.pem\n")
}

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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"bytes"
"crypto/ecdsa"
"crypto/rsa"
"crypto/subtle"
"crypto/x509"
"encoding/asn1"
"errors"
"io"
"strconv"
)
func (c *Conn) clientHandshake() error {
if c.config == nil {
c.config = defaultConfig()
}
hello := &clientHelloMsg{
vers: c.config.maxVersion(),
compressionMethods: []uint8{compressionNone},
random: make([]byte, 32),
ocspStapling: true,
serverName: c.config.ServerName,
supportedCurves: []uint16{curveP256, curveP384, curveP521},
supportedPoints: []uint8{pointFormatUncompressed},
nextProtoNeg: len(c.config.NextProtos) > 0,
}
possibleCipherSuites := c.config.cipherSuites()
hello.cipherSuites = make([]uint16, 0, len(possibleCipherSuites))
NextCipherSuite:
for _, suiteId := range possibleCipherSuites {
for _, suite := range cipherSuites {
if suite.id != suiteId {
continue
}
// Don't advertise TLS 1.2-only cipher suites unless
// we're attempting TLS 1.2.
if hello.vers < VersionTLS12 && suite.flags&suiteTLS12 != 0 {
continue
}
hello.cipherSuites = append(hello.cipherSuites, suiteId)
continue NextCipherSuite
}
}
t := uint32(c.config.time().Unix())
hello.random[0] = byte(t >> 24)
hello.random[1] = byte(t >> 16)
hello.random[2] = byte(t >> 8)
hello.random[3] = byte(t)
_, err := io.ReadFull(c.config.rand(), hello.random[4:])
if err != nil {
c.sendAlert(alertInternalError)
return errors.New("short read from Rand")
}
if hello.vers >= VersionTLS12 {
hello.signatureAndHashes = supportedSKXSignatureAlgorithms
}
c.writeRecord(recordTypeHandshake, hello.marshal())
msg, err := c.readHandshake()
if err != nil {
return err
}
serverHello, ok := msg.(*serverHelloMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
vers, ok := c.config.mutualVersion(serverHello.vers)
if !ok || vers < VersionTLS10 {
// TLS 1.0 is the minimum version supported as a client.
return c.sendAlert(alertProtocolVersion)
}
c.vers = vers
c.haveVers = true
finishedHash := newFinishedHash(c.vers)
finishedHash.Write(hello.marshal())
finishedHash.Write(serverHello.marshal())
if serverHello.compressionMethod != compressionNone {
return c.sendAlert(alertUnexpectedMessage)
}
if !hello.nextProtoNeg && serverHello.nextProtoNeg {
c.sendAlert(alertHandshakeFailure)
return errors.New("server advertised unrequested NPN")
}
suite := mutualCipherSuite(c.config.cipherSuites(), serverHello.cipherSuite)
if suite == nil {
return c.sendAlert(alertHandshakeFailure)
}
msg, err = c.readHandshake()
if err != nil {
return err
}
certMsg, ok := msg.(*certificateMsg)
if !ok || len(certMsg.certificates) == 0 {
return c.sendAlert(alertUnexpectedMessage)
}
finishedHash.Write(certMsg.marshal())
certs := make([]*x509.Certificate, len(certMsg.certificates))
for i, asn1Data := range certMsg.certificates {
cert, err := x509.ParseCertificate(asn1Data)
if err != nil {
c.sendAlert(alertBadCertificate)
return errors.New("failed to parse certificate from server: " + err.Error())
}
certs[i] = cert
}
if !c.config.InsecureSkipVerify {
opts := x509.VerifyOptions{
Roots: c.config.RootCAs,
CurrentTime: c.config.time(),
DNSName: c.config.ServerName,
Intermediates: x509.NewCertPool(),
}
for i, cert := range certs {
if i == 0 {
continue
}
opts.Intermediates.AddCert(cert)
}
c.verifiedChains, err = certs[0].Verify(opts)
if err != nil {
c.sendAlert(alertBadCertificate)
return err
}
}
switch certs[0].PublicKey.(type) {
case *rsa.PublicKey, *ecdsa.PublicKey:
break
default:
return c.sendAlert(alertUnsupportedCertificate)
}
c.peerCertificates = certs
if serverHello.ocspStapling {
msg, err = c.readHandshake()
if err != nil {
return err
}
cs, ok := msg.(*certificateStatusMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
finishedHash.Write(cs.marshal())
if cs.statusType == statusTypeOCSP {
c.ocspResponse = cs.response
}
}
msg, err = c.readHandshake()
if err != nil {
return err
}
keyAgreement := suite.ka(c.vers)
skx, ok := msg.(*serverKeyExchangeMsg)
if ok {
finishedHash.Write(skx.marshal())
err = keyAgreement.processServerKeyExchange(c.config, hello, serverHello, certs[0], skx)
if err != nil {
c.sendAlert(alertUnexpectedMessage)
return err
}
msg, err = c.readHandshake()
if err != nil {
return err
}
}
var chainToSend *Certificate
var certRequested bool
certReq, ok := msg.(*certificateRequestMsg)
if ok {
certRequested = true
// RFC 4346 on the certificateAuthorities field:
// A list of the distinguished names of acceptable certificate
// authorities. These distinguished names may specify a desired
// distinguished name for a root CA or for a subordinate CA;
// thus, this message can be used to describe both known roots
// and a desired authorization space. If the
// certificate_authorities list is empty then the client MAY
// send any certificate of the appropriate
// ClientCertificateType, unless there is some external
// arrangement to the contrary.
finishedHash.Write(certReq.marshal())
var rsaAvail, ecdsaAvail bool
for _, certType := range certReq.certificateTypes {
switch certType {
case certTypeRSASign:
rsaAvail = true
case certTypeECDSASign:
ecdsaAvail = true
}
}
// We need to search our list of client certs for one
// where SignatureAlgorithm is RSA and the Issuer is in
// certReq.certificateAuthorities
findCert:
for i, chain := range c.config.Certificates {
if !rsaAvail && !ecdsaAvail {
continue
}
for j, cert := range chain.Certificate {
x509Cert := chain.Leaf
// parse the certificate if this isn't the leaf
// node, or if chain.Leaf was nil
if j != 0 || x509Cert == nil {
if x509Cert, err = x509.ParseCertificate(cert); err != nil {
c.sendAlert(alertInternalError)
return errors.New("tls: failed to parse client certificate #" + strconv.Itoa(i) + ": " + err.Error())
}
}
switch {
case rsaAvail && x509Cert.PublicKeyAlgorithm == x509.RSA:
case ecdsaAvail && x509Cert.PublicKeyAlgorithm == x509.ECDSA:
default:
continue findCert
}
if len(certReq.certificateAuthorities) == 0 {
// they gave us an empty list, so just take the
// first RSA cert from c.config.Certificates
chainToSend = &chain
break findCert
}
for _, ca := range certReq.certificateAuthorities {
if bytes.Equal(x509Cert.RawIssuer, ca) {
chainToSend = &chain
break findCert
}
}
}
}
msg, err = c.readHandshake()
if err != nil {
return err
}
}
shd, ok := msg.(*serverHelloDoneMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
finishedHash.Write(shd.marshal())
// If the server requested a certificate then we have to send a
// Certificate message, even if it's empty because we don't have a
// certificate to send.
if certRequested {
certMsg = new(certificateMsg)
if chainToSend != nil {
certMsg.certificates = chainToSend.Certificate
}
finishedHash.Write(certMsg.marshal())
c.writeRecord(recordTypeHandshake, certMsg.marshal())
}
preMasterSecret, ckx, err := keyAgreement.generateClientKeyExchange(c.config, hello, certs[0])
if err != nil {
c.sendAlert(alertInternalError)
return err
}
if ckx != nil {
finishedHash.Write(ckx.marshal())
c.writeRecord(recordTypeHandshake, ckx.marshal())
}
if chainToSend != nil {
var signed []byte
certVerify := &certificateVerifyMsg{
hasSignatureAndHash: c.vers >= VersionTLS12,
}
switch key := c.config.Certificates[0].PrivateKey.(type) {
case *ecdsa.PrivateKey:
digest, _, hashId := finishedHash.hashForClientCertificate(signatureECDSA)
r, s, err := ecdsa.Sign(c.config.rand(), key, digest)
if err == nil {
signed, err = asn1.Marshal(ecdsaSignature{r, s})
}
certVerify.signatureAndHash.signature = signatureECDSA
certVerify.signatureAndHash.hash = hashId
case *rsa.PrivateKey:
digest, hashFunc, hashId := finishedHash.hashForClientCertificate(signatureRSA)
signed, err = rsa.SignPKCS1v15(c.config.rand(), key, hashFunc, digest)
certVerify.signatureAndHash.signature = signatureRSA
certVerify.signatureAndHash.hash = hashId
default:
err = errors.New("unknown private key type")
}
if err != nil {
return c.sendAlert(alertInternalError)
}
certVerify.signature = signed
finishedHash.Write(certVerify.marshal())
c.writeRecord(recordTypeHandshake, certVerify.marshal())
}
masterSecret := masterFromPreMasterSecret(c.vers, preMasterSecret, hello.random, serverHello.random)
clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV :=
keysFromMasterSecret(c.vers, masterSecret, hello.random, serverHello.random, suite.macLen, suite.keyLen, suite.ivLen)
var clientCipher interface{}
var clientHash macFunction
if suite.cipher != nil {
clientCipher = suite.cipher(clientKey, clientIV, false /* not for reading */)
clientHash = suite.mac(c.vers, clientMAC)
} else {
clientCipher = suite.aead(clientKey, clientIV)
}
c.out.prepareCipherSpec(c.vers, clientCipher, clientHash)
c.writeRecord(recordTypeChangeCipherSpec, []byte{1})
if serverHello.nextProtoNeg {
nextProto := new(nextProtoMsg)
proto, fallback := mutualProtocol(c.config.NextProtos, serverHello.nextProtos)
nextProto.proto = proto
c.clientProtocol = proto
c.clientProtocolFallback = fallback
finishedHash.Write(nextProto.marshal())
c.writeRecord(recordTypeHandshake, nextProto.marshal())
}
finished := new(finishedMsg)
finished.verifyData = finishedHash.clientSum(masterSecret)
finishedHash.Write(finished.marshal())
c.writeRecord(recordTypeHandshake, finished.marshal())
var serverCipher interface{}
var serverHash macFunction
if suite.cipher != nil {
serverCipher = suite.cipher(serverKey, serverIV, true /* for reading */)
serverHash = suite.mac(c.vers, serverMAC)
} else {
serverCipher = suite.aead(serverKey, serverIV)
}
c.in.prepareCipherSpec(c.vers, serverCipher, serverHash)
c.readRecord(recordTypeChangeCipherSpec)
if err := c.error(); err != nil {
return err
}
msg, err = c.readHandshake()
if err != nil {
return err
}
serverFinished, ok := msg.(*finishedMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
verify := finishedHash.serverSum(masterSecret)
if len(verify) != len(serverFinished.verifyData) ||
subtle.ConstantTimeCompare(verify, serverFinished.verifyData) != 1 {
return c.sendAlert(alertHandshakeFailure)
}
c.handshakeComplete = true
c.cipherSuite = suite.id
return nil
}
// mutualProtocol finds the mutual Next Protocol Negotiation protocol given the
// set of client and server supported protocols. The set of client supported
// protocols must not be empty. It returns the resulting protocol and flag
// indicating if the fallback case was reached.
func mutualProtocol(clientProtos, serverProtos []string) (string, bool) {
for _, s := range serverProtos {
for _, c := range clientProtos {
if s == c {
return s, false
}
}
}
return clientProtos[0], true
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/handshake_messages.go generated vendored Normal file
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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/handshake_server.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"crypto"
"crypto/ecdsa"
"crypto/rsa"
"crypto/subtle"
"crypto/x509"
"encoding/asn1"
"errors"
"io"
)
// serverHandshakeState contains details of a server handshake in progress.
// It's discarded once the handshake has completed.
type serverHandshakeState struct {
c *Conn
clientHello *clientHelloMsg
hello *serverHelloMsg
suite *cipherSuite
ellipticOk bool
ecdsaOk bool
sessionState *sessionState
finishedHash finishedHash
masterSecret []byte
certsFromClient [][]byte
cert *Certificate
}
// serverHandshake performs a TLS handshake as a server.
func (c *Conn) serverHandshake() error {
config := c.config
// If this is the first server handshake, we generate a random key to
// encrypt the tickets with.
config.serverInitOnce.Do(config.serverInit)
hs := serverHandshakeState{
c: c,
}
isResume, err := hs.readClientHello()
if err != nil {
return err
}
// For an overview of TLS handshaking, see https://tools.ietf.org/html/rfc5246#section-7.3
if isResume {
// The client has included a session ticket and so we do an abbreviated handshake.
if err := hs.doResumeHandshake(); err != nil {
return err
}
if err := hs.establishKeys(); err != nil {
return err
}
if err := hs.sendFinished(); err != nil {
return err
}
if err := hs.readFinished(); err != nil {
return err
}
c.didResume = true
} else {
// The client didn't include a session ticket, or it wasn't
// valid so we do a full handshake.
if err := hs.doFullHandshake(); err != nil {
return err
}
if err := hs.establishKeys(); err != nil {
return err
}
if err := hs.readFinished(); err != nil {
return err
}
if err := hs.sendSessionTicket(); err != nil {
return err
}
if err := hs.sendFinished(); err != nil {
return err
}
}
c.handshakeComplete = true
return nil
}
// readClientHello reads a ClientHello message from the client and decides
// whether we will perform session resumption.
func (hs *serverHandshakeState) readClientHello() (isResume bool, err error) {
config := hs.c.config
c := hs.c
msg, err := c.readHandshake()
if err != nil {
return false, err
}
var ok bool
hs.clientHello, ok = msg.(*clientHelloMsg)
if !ok {
return false, c.sendAlert(alertUnexpectedMessage)
}
c.vers, ok = config.mutualVersion(hs.clientHello.vers)
if !ok {
return false, c.sendAlert(alertProtocolVersion)
}
c.haveVers = true
hs.finishedHash = newFinishedHash(c.vers)
hs.finishedHash.Write(hs.clientHello.marshal())
hs.hello = new(serverHelloMsg)
supportedCurve := false
Curves:
for _, curve := range hs.clientHello.supportedCurves {
switch curve {
case curveP256, curveP384, curveP521:
supportedCurve = true
break Curves
}
}
supportedPointFormat := false
for _, pointFormat := range hs.clientHello.supportedPoints {
if pointFormat == pointFormatUncompressed {
supportedPointFormat = true
break
}
}
hs.ellipticOk = supportedCurve && supportedPointFormat
foundCompression := false
// We only support null compression, so check that the client offered it.
for _, compression := range hs.clientHello.compressionMethods {
if compression == compressionNone {
foundCompression = true
break
}
}
if !foundCompression {
return false, c.sendAlert(alertHandshakeFailure)
}
hs.hello.vers = c.vers
t := uint32(config.time().Unix())
hs.hello.random = make([]byte, 32)
hs.hello.random[0] = byte(t >> 24)
hs.hello.random[1] = byte(t >> 16)
hs.hello.random[2] = byte(t >> 8)
hs.hello.random[3] = byte(t)
_, err = io.ReadFull(config.rand(), hs.hello.random[4:])
if err != nil {
return false, c.sendAlert(alertInternalError)
}
hs.hello.compressionMethod = compressionNone
if len(hs.clientHello.serverName) > 0 {
c.serverName = hs.clientHello.serverName
}
// Although sending an empty NPN extension is reasonable, Firefox has
// had a bug around this. Best to send nothing at all if
// config.NextProtos is empty. See
// https://code.google.com/p/go/issues/detail?id=5445.
if hs.clientHello.nextProtoNeg && len(config.NextProtos) > 0 {
hs.hello.nextProtoNeg = true
hs.hello.nextProtos = config.NextProtos
}
if len(config.Certificates) == 0 {
return false, c.sendAlert(alertInternalError)
}
hs.cert = &config.Certificates[0]
if len(hs.clientHello.serverName) > 0 {
hs.cert = config.getCertificateForName(hs.clientHello.serverName)
}
_, hs.ecdsaOk = hs.cert.PrivateKey.(*ecdsa.PrivateKey)
if hs.checkForResumption() {
return true, nil
}
var preferenceList, supportedList []uint16
if c.config.PreferServerCipherSuites {
preferenceList = c.config.cipherSuites()
supportedList = hs.clientHello.cipherSuites
} else {
preferenceList = hs.clientHello.cipherSuites
supportedList = c.config.cipherSuites()
}
for _, id := range preferenceList {
if hs.suite = c.tryCipherSuite(id, supportedList, c.vers, hs.ellipticOk, hs.ecdsaOk); hs.suite != nil {
break
}
}
if hs.suite == nil {
return false, c.sendAlert(alertHandshakeFailure)
}
return false, nil
}
// checkForResumption returns true if we should perform resumption on this connection.
func (hs *serverHandshakeState) checkForResumption() bool {
c := hs.c
var ok bool
if hs.sessionState, ok = c.decryptTicket(hs.clientHello.sessionTicket); !ok {
return false
}
if hs.sessionState.vers > hs.clientHello.vers {
return false
}
if vers, ok := c.config.mutualVersion(hs.sessionState.vers); !ok || vers != hs.sessionState.vers {
return false
}
cipherSuiteOk := false
// Check that the client is still offering the ciphersuite in the session.
for _, id := range hs.clientHello.cipherSuites {
if id == hs.sessionState.cipherSuite {
cipherSuiteOk = true
break
}
}
if !cipherSuiteOk {
return false
}
// Check that we also support the ciphersuite from the session.
hs.suite = c.tryCipherSuite(hs.sessionState.cipherSuite, c.config.cipherSuites(), hs.sessionState.vers, hs.ellipticOk, hs.ecdsaOk)
if hs.suite == nil {
return false
}
sessionHasClientCerts := len(hs.sessionState.certificates) != 0
needClientCerts := c.config.ClientAuth == RequireAnyClientCert || c.config.ClientAuth == RequireAndVerifyClientCert
if needClientCerts && !sessionHasClientCerts {
return false
}
if sessionHasClientCerts && c.config.ClientAuth == NoClientCert {
return false
}
return true
}
func (hs *serverHandshakeState) doResumeHandshake() error {
c := hs.c
hs.hello.cipherSuite = hs.suite.id
// We echo the client's session ID in the ServerHello to let it know
// that we're doing a resumption.
hs.hello.sessionId = hs.clientHello.sessionId
hs.finishedHash.Write(hs.hello.marshal())
c.writeRecord(recordTypeHandshake, hs.hello.marshal())
if len(hs.sessionState.certificates) > 0 {
if _, err := hs.processCertsFromClient(hs.sessionState.certificates); err != nil {
return err
}
}
hs.masterSecret = hs.sessionState.masterSecret
return nil
}
func (hs *serverHandshakeState) doFullHandshake() error {
config := hs.c.config
c := hs.c
if hs.clientHello.ocspStapling && len(hs.cert.OCSPStaple) > 0 {
hs.hello.ocspStapling = true
}
hs.hello.ticketSupported = hs.clientHello.ticketSupported && !config.SessionTicketsDisabled
hs.hello.cipherSuite = hs.suite.id
hs.finishedHash.Write(hs.hello.marshal())
c.writeRecord(recordTypeHandshake, hs.hello.marshal())
certMsg := new(certificateMsg)
certMsg.certificates = hs.cert.Certificate
hs.finishedHash.Write(certMsg.marshal())
c.writeRecord(recordTypeHandshake, certMsg.marshal())
if hs.hello.ocspStapling {
certStatus := new(certificateStatusMsg)
certStatus.statusType = statusTypeOCSP
certStatus.response = hs.cert.OCSPStaple
hs.finishedHash.Write(certStatus.marshal())
c.writeRecord(recordTypeHandshake, certStatus.marshal())
}
keyAgreement := hs.suite.ka(c.vers)
skx, err := keyAgreement.generateServerKeyExchange(config, hs.cert, hs.clientHello, hs.hello)
if err != nil {
c.sendAlert(alertHandshakeFailure)
return err
}
if skx != nil {
hs.finishedHash.Write(skx.marshal())
c.writeRecord(recordTypeHandshake, skx.marshal())
}
if config.ClientAuth >= RequestClientCert {
// Request a client certificate
certReq := new(certificateRequestMsg)
certReq.certificateTypes = []byte{
byte(certTypeRSASign),
byte(certTypeECDSASign),
}
if c.vers >= VersionTLS12 {
certReq.hasSignatureAndHash = true
certReq.signatureAndHashes = supportedClientCertSignatureAlgorithms
}
// An empty list of certificateAuthorities signals to
// the client that it may send any certificate in response
// to our request. When we know the CAs we trust, then
// we can send them down, so that the client can choose
// an appropriate certificate to give to us.
if config.ClientCAs != nil {
certReq.certificateAuthorities = config.ClientCAs.Subjects()
}
hs.finishedHash.Write(certReq.marshal())
c.writeRecord(recordTypeHandshake, certReq.marshal())
}
helloDone := new(serverHelloDoneMsg)
hs.finishedHash.Write(helloDone.marshal())
c.writeRecord(recordTypeHandshake, helloDone.marshal())
var pub crypto.PublicKey // public key for client auth, if any
msg, err := c.readHandshake()
if err != nil {
return err
}
var ok bool
// If we requested a client certificate, then the client must send a
// certificate message, even if it's empty.
if config.ClientAuth >= RequestClientCert {
if certMsg, ok = msg.(*certificateMsg); !ok {
return c.sendAlert(alertHandshakeFailure)
}
hs.finishedHash.Write(certMsg.marshal())
if len(certMsg.certificates) == 0 {
// The client didn't actually send a certificate
switch config.ClientAuth {
case RequireAnyClientCert, RequireAndVerifyClientCert:
c.sendAlert(alertBadCertificate)
return errors.New("tls: client didn't provide a certificate")
}
}
pub, err = hs.processCertsFromClient(certMsg.certificates)
if err != nil {
return err
}
msg, err = c.readHandshake()
if err != nil {
return err
}
}
// Get client key exchange
ckx, ok := msg.(*clientKeyExchangeMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
hs.finishedHash.Write(ckx.marshal())
// If we received a client cert in response to our certificate request message,
// the client will send us a certificateVerifyMsg immediately after the
// clientKeyExchangeMsg. This message is a digest of all preceding
// handshake-layer messages that is signed using the private key corresponding
// to the client's certificate. This allows us to verify that the client is in
// possession of the private key of the certificate.
if len(c.peerCertificates) > 0 {
msg, err = c.readHandshake()
if err != nil {
return err
}
certVerify, ok := msg.(*certificateVerifyMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
switch key := pub.(type) {
case *ecdsa.PublicKey:
ecdsaSig := new(ecdsaSignature)
if _, err = asn1.Unmarshal(certVerify.signature, ecdsaSig); err != nil {
break
}
if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
err = errors.New("ECDSA signature contained zero or negative values")
break
}
digest, _, _ := hs.finishedHash.hashForClientCertificate(signatureECDSA)
if !ecdsa.Verify(key, digest, ecdsaSig.R, ecdsaSig.S) {
err = errors.New("ECDSA verification failure")
break
}
case *rsa.PublicKey:
digest, hashFunc, _ := hs.finishedHash.hashForClientCertificate(signatureRSA)
err = rsa.VerifyPKCS1v15(key, hashFunc, digest, certVerify.signature)
}
if err != nil {
c.sendAlert(alertBadCertificate)
return errors.New("could not validate signature of connection nonces: " + err.Error())
}
hs.finishedHash.Write(certVerify.marshal())
}
preMasterSecret, err := keyAgreement.processClientKeyExchange(config, hs.cert, ckx, c.vers)
if err != nil {
c.sendAlert(alertHandshakeFailure)
return err
}
hs.masterSecret = masterFromPreMasterSecret(c.vers, preMasterSecret, hs.clientHello.random, hs.hello.random)
return nil
}
func (hs *serverHandshakeState) establishKeys() error {
c := hs.c
clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV :=
keysFromMasterSecret(c.vers, hs.masterSecret, hs.clientHello.random, hs.hello.random, hs.suite.macLen, hs.suite.keyLen, hs.suite.ivLen)
var clientCipher, serverCipher interface{}
var clientHash, serverHash macFunction
if hs.suite.aead == nil {
clientCipher = hs.suite.cipher(clientKey, clientIV, true /* for reading */)
clientHash = hs.suite.mac(c.vers, clientMAC)
serverCipher = hs.suite.cipher(serverKey, serverIV, false /* not for reading */)
serverHash = hs.suite.mac(c.vers, serverMAC)
} else {
clientCipher = hs.suite.aead(clientKey, clientIV)
serverCipher = hs.suite.aead(serverKey, serverIV)
}
c.in.prepareCipherSpec(c.vers, clientCipher, clientHash)
c.out.prepareCipherSpec(c.vers, serverCipher, serverHash)
return nil
}
func (hs *serverHandshakeState) readFinished() error {
c := hs.c
c.readRecord(recordTypeChangeCipherSpec)
if err := c.error(); err != nil {
return err
}
if hs.hello.nextProtoNeg {
msg, err := c.readHandshake()
if err != nil {
return err
}
nextProto, ok := msg.(*nextProtoMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
hs.finishedHash.Write(nextProto.marshal())
c.clientProtocol = nextProto.proto
}
msg, err := c.readHandshake()
if err != nil {
return err
}
clientFinished, ok := msg.(*finishedMsg)
if !ok {
return c.sendAlert(alertUnexpectedMessage)
}
verify := hs.finishedHash.clientSum(hs.masterSecret)
if len(verify) != len(clientFinished.verifyData) ||
subtle.ConstantTimeCompare(verify, clientFinished.verifyData) != 1 {
return c.sendAlert(alertHandshakeFailure)
}
hs.finishedHash.Write(clientFinished.marshal())
return nil
}
func (hs *serverHandshakeState) sendSessionTicket() error {
if !hs.hello.ticketSupported {
return nil
}
c := hs.c
m := new(newSessionTicketMsg)
var err error
state := sessionState{
vers: c.vers,
cipherSuite: hs.suite.id,
masterSecret: hs.masterSecret,
certificates: hs.certsFromClient,
}
m.ticket, err = c.encryptTicket(&state)
if err != nil {
return err
}
hs.finishedHash.Write(m.marshal())
c.writeRecord(recordTypeHandshake, m.marshal())
return nil
}
func (hs *serverHandshakeState) sendFinished() error {
c := hs.c
c.writeRecord(recordTypeChangeCipherSpec, []byte{1})
finished := new(finishedMsg)
finished.verifyData = hs.finishedHash.serverSum(hs.masterSecret)
hs.finishedHash.Write(finished.marshal())
c.writeRecord(recordTypeHandshake, finished.marshal())
c.cipherSuite = hs.suite.id
return nil
}
// processCertsFromClient takes a chain of client certificates either from a
// Certificates message or from a sessionState and verifies them. It returns
// the public key of the leaf certificate.
func (hs *serverHandshakeState) processCertsFromClient(certificates [][]byte) (crypto.PublicKey, error) {
c := hs.c
hs.certsFromClient = certificates
certs := make([]*x509.Certificate, len(certificates))
var err error
for i, asn1Data := range certificates {
if certs[i], err = x509.ParseCertificate(asn1Data); err != nil {
c.sendAlert(alertBadCertificate)
return nil, errors.New("tls: failed to parse client certificate: " + err.Error())
}
}
if c.config.ClientAuth >= VerifyClientCertIfGiven && len(certs) > 0 {
opts := x509.VerifyOptions{
Roots: c.config.ClientCAs,
CurrentTime: c.config.time(),
Intermediates: x509.NewCertPool(),
KeyUsages: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
}
for _, cert := range certs[1:] {
opts.Intermediates.AddCert(cert)
}
chains, err := certs[0].Verify(opts)
if err != nil {
c.sendAlert(alertBadCertificate)
return nil, errors.New("tls: failed to verify client's certificate: " + err.Error())
}
ok := false
for _, ku := range certs[0].ExtKeyUsage {
if ku == x509.ExtKeyUsageClientAuth {
ok = true
break
}
}
if !ok {
c.sendAlert(alertHandshakeFailure)
return nil, errors.New("tls: client's certificate's extended key usage doesn't permit it to be used for client authentication")
}
c.verifiedChains = chains
}
if len(certs) > 0 {
var pub crypto.PublicKey
switch key := certs[0].PublicKey.(type) {
case *ecdsa.PublicKey, *rsa.PublicKey:
pub = key
default:
return nil, c.sendAlert(alertUnsupportedCertificate)
}
c.peerCertificates = certs
return pub, nil
}
return nil, nil
}
// tryCipherSuite returns a cipherSuite with the given id if that cipher suite
// is acceptable to use.
func (c *Conn) tryCipherSuite(id uint16, supportedCipherSuites []uint16, version uint16, ellipticOk, ecdsaOk bool) *cipherSuite {
for _, supported := range supportedCipherSuites {
if id == supported {
var candidate *cipherSuite
for _, s := range cipherSuites {
if s.id == id {
candidate = s
break
}
}
if candidate == nil {
continue
}
// Don't select a ciphersuite which we can't
// support for this client.
if (candidate.flags&suiteECDHE != 0) && !ellipticOk {
continue
}
if (candidate.flags&suiteECDSA != 0) != ecdsaOk {
continue
}
if version < VersionTLS12 && candidate.flags&suiteTLS12 != 0 {
continue
}
return candidate
}
}
return nil
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/key_agreement.go generated vendored Normal file
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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/md5"
"crypto/rsa"
"crypto/sha1"
"crypto/sha256"
"crypto/x509"
"encoding/asn1"
"errors"
"io"
"math/big"
)
// rsaKeyAgreement implements the standard TLS key agreement where the client
// encrypts the pre-master secret to the server's public key.
type rsaKeyAgreement struct{}
func (ka rsaKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
return nil, nil
}
func (ka rsaKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
preMasterSecret := make([]byte, 48)
_, err := io.ReadFull(config.rand(), preMasterSecret[2:])
if err != nil {
return nil, err
}
if len(ckx.ciphertext) < 2 {
return nil, errors.New("bad ClientKeyExchange")
}
ciphertext := ckx.ciphertext
if version != VersionSSL30 {
ciphertextLen := int(ckx.ciphertext[0])<<8 | int(ckx.ciphertext[1])
if ciphertextLen != len(ckx.ciphertext)-2 {
return nil, errors.New("bad ClientKeyExchange")
}
ciphertext = ckx.ciphertext[2:]
}
err = rsa.DecryptPKCS1v15SessionKey(config.rand(), cert.PrivateKey.(*rsa.PrivateKey), ciphertext, preMasterSecret)
if err != nil {
return nil, err
}
// We don't check the version number in the premaster secret. For one,
// by checking it, we would leak information about the validity of the
// encrypted pre-master secret. Secondly, it provides only a small
// benefit against a downgrade attack and some implementations send the
// wrong version anyway. See the discussion at the end of section
// 7.4.7.1 of RFC 4346.
return preMasterSecret, nil
}
func (ka rsaKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
return errors.New("unexpected ServerKeyExchange")
}
func (ka rsaKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
preMasterSecret := make([]byte, 48)
preMasterSecret[0] = byte(clientHello.vers >> 8)
preMasterSecret[1] = byte(clientHello.vers)
_, err := io.ReadFull(config.rand(), preMasterSecret[2:])
if err != nil {
return nil, nil, err
}
encrypted, err := rsa.EncryptPKCS1v15(config.rand(), cert.PublicKey.(*rsa.PublicKey), preMasterSecret)
if err != nil {
return nil, nil, err
}
ckx := new(clientKeyExchangeMsg)
ckx.ciphertext = make([]byte, len(encrypted)+2)
ckx.ciphertext[0] = byte(len(encrypted) >> 8)
ckx.ciphertext[1] = byte(len(encrypted))
copy(ckx.ciphertext[2:], encrypted)
return preMasterSecret, ckx, nil
}
// sha1Hash calculates a SHA1 hash over the given byte slices.
func sha1Hash(slices [][]byte) []byte {
hsha1 := sha1.New()
for _, slice := range slices {
hsha1.Write(slice)
}
return hsha1.Sum(nil)
}
// md5SHA1Hash implements TLS 1.0's hybrid hash function which consists of the
// concatenation of an MD5 and SHA1 hash.
func md5SHA1Hash(slices [][]byte) []byte {
md5sha1 := make([]byte, md5.Size+sha1.Size)
hmd5 := md5.New()
for _, slice := range slices {
hmd5.Write(slice)
}
copy(md5sha1, hmd5.Sum(nil))
copy(md5sha1[md5.Size:], sha1Hash(slices))
return md5sha1
}
// sha256Hash implements TLS 1.2's hash function.
func sha256Hash(slices [][]byte) []byte {
h := sha256.New()
for _, slice := range slices {
h.Write(slice)
}
return h.Sum(nil)
}
// hashForServerKeyExchange hashes the given slices and returns their digest
// and the identifier of the hash function used. The hashFunc argument is only
// used for >= TLS 1.2 and precisely identifies the hash function to use.
func hashForServerKeyExchange(sigType, hashFunc uint8, version uint16, slices ...[]byte) ([]byte, crypto.Hash, error) {
if version >= VersionTLS12 {
switch hashFunc {
case hashSHA256:
return sha256Hash(slices), crypto.SHA256, nil
case hashSHA1:
return sha1Hash(slices), crypto.SHA1, nil
default:
return nil, crypto.Hash(0), errors.New("tls: unknown hash function used by peer")
}
}
if sigType == signatureECDSA {
return sha1Hash(slices), crypto.SHA1, nil
}
return md5SHA1Hash(slices), crypto.MD5SHA1, nil
}
// pickTLS12HashForSignature returns a TLS 1.2 hash identifier for signing a
// ServerKeyExchange given the signature type being used and the client's
// advertized list of supported signature and hash combinations.
func pickTLS12HashForSignature(sigType uint8, clientSignatureAndHashes []signatureAndHash) (uint8, error) {
if len(clientSignatureAndHashes) == 0 {
// If the client didn't specify any signature_algorithms
// extension then we can assume that it supports SHA1. See
// http://tools.ietf.org/html/rfc5246#section-7.4.1.4.1
return hashSHA1, nil
}
for _, sigAndHash := range clientSignatureAndHashes {
if sigAndHash.signature != sigType {
continue
}
switch sigAndHash.hash {
case hashSHA1, hashSHA256:
return sigAndHash.hash, nil
}
}
return 0, errors.New("tls: client doesn't support any common hash functions")
}
// ecdheRSAKeyAgreement implements a TLS key agreement where the server
// generates a ephemeral EC public/private key pair and signs it. The
// pre-master secret is then calculated using ECDH. The signature may
// either be ECDSA or RSA.
type ecdheKeyAgreement struct {
version uint16
sigType uint8
privateKey []byte
curve elliptic.Curve
x, y *big.Int
}
func (ka *ecdheKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
var curveid uint16
Curve:
for _, c := range clientHello.supportedCurves {
switch c {
case curveP256:
ka.curve = elliptic.P256()
curveid = c
break Curve
case curveP384:
ka.curve = elliptic.P384()
curveid = c
break Curve
case curveP521:
ka.curve = elliptic.P521()
curveid = c
break Curve
}
}
if curveid == 0 {
return nil, errors.New("tls: no supported elliptic curves offered")
}
var x, y *big.Int
var err error
ka.privateKey, x, y, err = elliptic.GenerateKey(ka.curve, config.rand())
if err != nil {
return nil, err
}
ecdhePublic := elliptic.Marshal(ka.curve, x, y)
// http://tools.ietf.org/html/rfc4492#section-5.4
serverECDHParams := make([]byte, 1+2+1+len(ecdhePublic))
serverECDHParams[0] = 3 // named curve
serverECDHParams[1] = byte(curveid >> 8)
serverECDHParams[2] = byte(curveid)
serverECDHParams[3] = byte(len(ecdhePublic))
copy(serverECDHParams[4:], ecdhePublic)
var tls12HashId uint8
if ka.version >= VersionTLS12 {
if tls12HashId, err = pickTLS12HashForSignature(ka.sigType, clientHello.signatureAndHashes); err != nil {
return nil, err
}
}
digest, hashFunc, err := hashForServerKeyExchange(ka.sigType, tls12HashId, ka.version, clientHello.random, hello.random, serverECDHParams)
if err != nil {
return nil, err
}
var sig []byte
switch ka.sigType {
case signatureECDSA:
privKey, ok := cert.PrivateKey.(*ecdsa.PrivateKey)
if !ok {
return nil, errors.New("ECDHE ECDSA requires an ECDSA server private key")
}
r, s, err := ecdsa.Sign(config.rand(), privKey, digest)
if err != nil {
return nil, errors.New("failed to sign ECDHE parameters: " + err.Error())
}
sig, err = asn1.Marshal(ecdsaSignature{r, s})
case signatureRSA:
privKey, ok := cert.PrivateKey.(*rsa.PrivateKey)
if !ok {
return nil, errors.New("ECDHE RSA requires a RSA server private key")
}
sig, err = rsa.SignPKCS1v15(config.rand(), privKey, hashFunc, digest)
if err != nil {
return nil, errors.New("failed to sign ECDHE parameters: " + err.Error())
}
default:
return nil, errors.New("unknown ECDHE signature algorithm")
}
skx := new(serverKeyExchangeMsg)
sigAndHashLen := 0
if ka.version >= VersionTLS12 {
sigAndHashLen = 2
}
skx.key = make([]byte, len(serverECDHParams)+sigAndHashLen+2+len(sig))
copy(skx.key, serverECDHParams)
k := skx.key[len(serverECDHParams):]
if ka.version >= VersionTLS12 {
k[0] = tls12HashId
k[1] = ka.sigType
k = k[2:]
}
k[0] = byte(len(sig) >> 8)
k[1] = byte(len(sig))
copy(k[2:], sig)
return skx, nil
}
func (ka *ecdheKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
if len(ckx.ciphertext) == 0 || int(ckx.ciphertext[0]) != len(ckx.ciphertext)-1 {
return nil, errors.New("bad ClientKeyExchange")
}
x, y := elliptic.Unmarshal(ka.curve, ckx.ciphertext[1:])
if x == nil {
return nil, errors.New("bad ClientKeyExchange")
}
x, _ = ka.curve.ScalarMult(x, y, ka.privateKey)
preMasterSecret := make([]byte, (ka.curve.Params().BitSize+7)>>3)
xBytes := x.Bytes()
copy(preMasterSecret[len(preMasterSecret)-len(xBytes):], xBytes)
return preMasterSecret, nil
}
var errServerKeyExchange = errors.New("invalid ServerKeyExchange")
func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
if len(skx.key) < 4 {
return errServerKeyExchange
}
if skx.key[0] != 3 { // named curve
return errors.New("server selected unsupported curve")
}
curveid := uint16(skx.key[1])<<8 | uint16(skx.key[2])
switch curveid {
case curveP256:
ka.curve = elliptic.P256()
case curveP384:
ka.curve = elliptic.P384()
case curveP521:
ka.curve = elliptic.P521()
default:
return errors.New("server selected unsupported curve")
}
publicLen := int(skx.key[3])
if publicLen+4 > len(skx.key) {
return errServerKeyExchange
}
ka.x, ka.y = elliptic.Unmarshal(ka.curve, skx.key[4:4+publicLen])
if ka.x == nil {
return errServerKeyExchange
}
serverECDHParams := skx.key[:4+publicLen]
sig := skx.key[4+publicLen:]
if len(sig) < 2 {
return errServerKeyExchange
}
var tls12HashId uint8
if ka.version >= VersionTLS12 {
// handle SignatureAndHashAlgorithm
var sigAndHash []uint8
sigAndHash, sig = sig[:2], sig[2:]
if sigAndHash[1] != ka.sigType {
return errServerKeyExchange
}
tls12HashId = sigAndHash[0]
if len(sig) < 2 {
return errServerKeyExchange
}
}
sigLen := int(sig[0])<<8 | int(sig[1])
if sigLen+2 != len(sig) {
return errServerKeyExchange
}
sig = sig[2:]
digest, hashFunc, err := hashForServerKeyExchange(ka.sigType, tls12HashId, ka.version, clientHello.random, serverHello.random, serverECDHParams)
if err != nil {
return err
}
switch ka.sigType {
case signatureECDSA:
pubKey, ok := cert.PublicKey.(*ecdsa.PublicKey)
if !ok {
return errors.New("ECDHE ECDSA requires a ECDSA server public key")
}
ecdsaSig := new(ecdsaSignature)
if _, err := asn1.Unmarshal(sig, ecdsaSig); err != nil {
return err
}
if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
return errors.New("ECDSA signature contained zero or negative values")
}
if !ecdsa.Verify(pubKey, digest, ecdsaSig.R, ecdsaSig.S) {
return errors.New("ECDSA verification failure")
}
case signatureRSA:
pubKey, ok := cert.PublicKey.(*rsa.PublicKey)
if !ok {
return errors.New("ECDHE RSA requires a RSA server public key")
}
if err := rsa.VerifyPKCS1v15(pubKey, hashFunc, digest, sig); err != nil {
return err
}
default:
return errors.New("unknown ECDHE signature algorithm")
}
return nil
}
func (ka *ecdheKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
if ka.curve == nil {
return nil, nil, errors.New("missing ServerKeyExchange message")
}
priv, mx, my, err := elliptic.GenerateKey(ka.curve, config.rand())
if err != nil {
return nil, nil, err
}
x, _ := ka.curve.ScalarMult(ka.x, ka.y, priv)
preMasterSecret := make([]byte, (ka.curve.Params().BitSize+7)>>3)
xBytes := x.Bytes()
copy(preMasterSecret[len(preMasterSecret)-len(xBytes):], xBytes)
serialized := elliptic.Marshal(ka.curve, mx, my)
ckx := new(clientKeyExchangeMsg)
ckx.ciphertext = make([]byte, 1+len(serialized))
ckx.ciphertext[0] = byte(len(serialized))
copy(ckx.ciphertext[1:], serialized)
return preMasterSecret, ckx, nil
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/prf.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"crypto"
"crypto/hmac"
"crypto/md5"
"crypto/sha1"
"crypto/sha256"
"hash"
)
// Split a premaster secret in two as specified in RFC 4346, section 5.
func splitPreMasterSecret(secret []byte) (s1, s2 []byte) {
s1 = secret[0 : (len(secret)+1)/2]
s2 = secret[len(secret)/2:]
return
}
// pHash implements the P_hash function, as defined in RFC 4346, section 5.
func pHash(result, secret, seed []byte, hash func() hash.Hash) {
h := hmac.New(hash, secret)
h.Write(seed)
a := h.Sum(nil)
j := 0
for j < len(result) {
h.Reset()
h.Write(a)
h.Write(seed)
b := h.Sum(nil)
todo := len(b)
if j+todo > len(result) {
todo = len(result) - j
}
copy(result[j:j+todo], b)
j += todo
h.Reset()
h.Write(a)
a = h.Sum(nil)
}
}
// prf10 implements the TLS 1.0 pseudo-random function, as defined in RFC 2246, section 5.
func prf10(result, secret, label, seed []byte) {
hashSHA1 := sha1.New
hashMD5 := md5.New
labelAndSeed := make([]byte, len(label)+len(seed))
copy(labelAndSeed, label)
copy(labelAndSeed[len(label):], seed)
s1, s2 := splitPreMasterSecret(secret)
pHash(result, s1, labelAndSeed, hashMD5)
result2 := make([]byte, len(result))
pHash(result2, s2, labelAndSeed, hashSHA1)
for i, b := range result2 {
result[i] ^= b
}
}
// prf12 implements the TLS 1.2 pseudo-random function, as defined in RFC 5246, section 5.
func prf12(result, secret, label, seed []byte) {
labelAndSeed := make([]byte, len(label)+len(seed))
copy(labelAndSeed, label)
copy(labelAndSeed[len(label):], seed)
pHash(result, secret, labelAndSeed, sha256.New)
}
// prf30 implements the SSL 3.0 pseudo-random function, as defined in
// www.mozilla.org/projects/security/pki/nss/ssl/draft302.txt section 6.
func prf30(result, secret, label, seed []byte) {
hashSHA1 := sha1.New()
hashMD5 := md5.New()
done := 0
i := 0
// RFC5246 section 6.3 says that the largest PRF output needed is 128
// bytes. Since no more ciphersuites will be added to SSLv3, this will
// remain true. Each iteration gives us 16 bytes so 10 iterations will
// be sufficient.
var b [11]byte
for done < len(result) {
for j := 0; j <= i; j++ {
b[j] = 'A' + byte(i)
}
hashSHA1.Reset()
hashSHA1.Write(b[:i+1])
hashSHA1.Write(secret)
hashSHA1.Write(seed)
digest := hashSHA1.Sum(nil)
hashMD5.Reset()
hashMD5.Write(secret)
hashMD5.Write(digest)
done += copy(result[done:], hashMD5.Sum(nil))
i++
}
}
const (
tlsRandomLength = 32 // Length of a random nonce in TLS 1.1.
masterSecretLength = 48 // Length of a master secret in TLS 1.1.
finishedVerifyLength = 12 // Length of verify_data in a Finished message.
)
var masterSecretLabel = []byte("master secret")
var keyExpansionLabel = []byte("key expansion")
var clientFinishedLabel = []byte("client finished")
var serverFinishedLabel = []byte("server finished")
func prfForVersion(version uint16) func(result, secret, label, seed []byte) {
switch version {
case VersionSSL30:
return prf30
case VersionTLS10, VersionTLS11:
return prf10
case VersionTLS12:
return prf12
default:
panic("unknown version")
}
}
// masterFromPreMasterSecret generates the master secret from the pre-master
// secret. See http://tools.ietf.org/html/rfc5246#section-8.1
func masterFromPreMasterSecret(version uint16, preMasterSecret, clientRandom, serverRandom []byte) []byte {
var seed [tlsRandomLength * 2]byte
copy(seed[0:len(clientRandom)], clientRandom)
copy(seed[len(clientRandom):], serverRandom)
masterSecret := make([]byte, masterSecretLength)
prfForVersion(version)(masterSecret, preMasterSecret, masterSecretLabel, seed[0:])
return masterSecret
}
// keysFromMasterSecret generates the connection keys from the master
// secret, given the lengths of the MAC key, cipher key and IV, as defined in
// RFC 2246, section 6.3.
func keysFromMasterSecret(version uint16, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) {
var seed [tlsRandomLength * 2]byte
copy(seed[0:len(clientRandom)], serverRandom)
copy(seed[len(serverRandom):], clientRandom)
n := 2*macLen + 2*keyLen + 2*ivLen
keyMaterial := make([]byte, n)
prfForVersion(version)(keyMaterial, masterSecret, keyExpansionLabel, seed[0:])
clientMAC = keyMaterial[:macLen]
keyMaterial = keyMaterial[macLen:]
serverMAC = keyMaterial[:macLen]
keyMaterial = keyMaterial[macLen:]
clientKey = keyMaterial[:keyLen]
keyMaterial = keyMaterial[keyLen:]
serverKey = keyMaterial[:keyLen]
keyMaterial = keyMaterial[keyLen:]
clientIV = keyMaterial[:ivLen]
keyMaterial = keyMaterial[ivLen:]
serverIV = keyMaterial[:ivLen]
return
}
func newFinishedHash(version uint16) finishedHash {
if version >= VersionTLS12 {
return finishedHash{sha256.New(), sha256.New(), nil, nil, version}
}
return finishedHash{sha1.New(), sha1.New(), md5.New(), md5.New(), version}
}
// A finishedHash calculates the hash of a set of handshake messages suitable
// for including in a Finished message.
type finishedHash struct {
client hash.Hash
server hash.Hash
// Prior to TLS 1.2, an additional MD5 hash is required.
clientMD5 hash.Hash
serverMD5 hash.Hash
version uint16
}
func (h finishedHash) Write(msg []byte) (n int, err error) {
h.client.Write(msg)
h.server.Write(msg)
if h.version < VersionTLS12 {
h.clientMD5.Write(msg)
h.serverMD5.Write(msg)
}
return len(msg), nil
}
// finishedSum30 calculates the contents of the verify_data member of a SSLv3
// Finished message given the MD5 and SHA1 hashes of a set of handshake
// messages.
func finishedSum30(md5, sha1 hash.Hash, masterSecret []byte, magic [4]byte) []byte {
md5.Write(magic[:])
md5.Write(masterSecret)
md5.Write(ssl30Pad1[:])
md5Digest := md5.Sum(nil)
md5.Reset()
md5.Write(masterSecret)
md5.Write(ssl30Pad2[:])
md5.Write(md5Digest)
md5Digest = md5.Sum(nil)
sha1.Write(magic[:])
sha1.Write(masterSecret)
sha1.Write(ssl30Pad1[:40])
sha1Digest := sha1.Sum(nil)
sha1.Reset()
sha1.Write(masterSecret)
sha1.Write(ssl30Pad2[:40])
sha1.Write(sha1Digest)
sha1Digest = sha1.Sum(nil)
ret := make([]byte, len(md5Digest)+len(sha1Digest))
copy(ret, md5Digest)
copy(ret[len(md5Digest):], sha1Digest)
return ret
}
var ssl3ClientFinishedMagic = [4]byte{0x43, 0x4c, 0x4e, 0x54}
var ssl3ServerFinishedMagic = [4]byte{0x53, 0x52, 0x56, 0x52}
// clientSum returns the contents of the verify_data member of a client's
// Finished message.
func (h finishedHash) clientSum(masterSecret []byte) []byte {
if h.version == VersionSSL30 {
return finishedSum30(h.clientMD5, h.client, masterSecret, ssl3ClientFinishedMagic)
}
out := make([]byte, finishedVerifyLength)
if h.version >= VersionTLS12 {
seed := h.client.Sum(nil)
prf12(out, masterSecret, clientFinishedLabel, seed)
} else {
seed := make([]byte, 0, md5.Size+sha1.Size)
seed = h.clientMD5.Sum(seed)
seed = h.client.Sum(seed)
prf10(out, masterSecret, clientFinishedLabel, seed)
}
return out
}
// serverSum returns the contents of the verify_data member of a server's
// Finished message.
func (h finishedHash) serverSum(masterSecret []byte) []byte {
if h.version == VersionSSL30 {
return finishedSum30(h.serverMD5, h.server, masterSecret, ssl3ServerFinishedMagic)
}
out := make([]byte, finishedVerifyLength)
if h.version >= VersionTLS12 {
seed := h.server.Sum(nil)
prf12(out, masterSecret, serverFinishedLabel, seed)
} else {
seed := make([]byte, 0, md5.Size+sha1.Size)
seed = h.serverMD5.Sum(seed)
seed = h.server.Sum(seed)
prf10(out, masterSecret, serverFinishedLabel, seed)
}
return out
}
// hashForClientCertificate returns a digest, hash function, and TLS 1.2 hash
// id suitable for signing by a TLS client certificate.
func (h finishedHash) hashForClientCertificate(sigType uint8) ([]byte, crypto.Hash, uint8) {
if h.version >= VersionTLS12 {
digest := h.server.Sum(nil)
return digest, crypto.SHA256, hashSHA256
}
if sigType == signatureECDSA {
digest := h.server.Sum(nil)
return digest, crypto.SHA1, hashSHA1
}
digest := make([]byte, 0, 36)
digest = h.serverMD5.Sum(digest)
digest = h.server.Sum(digest)
return digest, crypto.MD5SHA1, 0 /* not specified in TLS 1.2. */
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/ticket.go generated vendored Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tls
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/hmac"
"crypto/sha256"
"crypto/subtle"
"errors"
"io"
)
// sessionState contains the information that is serialized into a session
// ticket in order to later resume a connection.
type sessionState struct {
vers uint16
cipherSuite uint16
masterSecret []byte
certificates [][]byte
}
func (s *sessionState) equal(i interface{}) bool {
s1, ok := i.(*sessionState)
if !ok {
return false
}
if s.vers != s1.vers ||
s.cipherSuite != s1.cipherSuite ||
!bytes.Equal(s.masterSecret, s1.masterSecret) {
return false
}
if len(s.certificates) != len(s1.certificates) {
return false
}
for i := range s.certificates {
if !bytes.Equal(s.certificates[i], s1.certificates[i]) {
return false
}
}
return true
}
func (s *sessionState) marshal() []byte {
length := 2 + 2 + 2 + len(s.masterSecret) + 2
for _, cert := range s.certificates {
length += 4 + len(cert)
}
ret := make([]byte, length)
x := ret
x[0] = byte(s.vers >> 8)
x[1] = byte(s.vers)
x[2] = byte(s.cipherSuite >> 8)
x[3] = byte(s.cipherSuite)
x[4] = byte(len(s.masterSecret) >> 8)
x[5] = byte(len(s.masterSecret))
x = x[6:]
copy(x, s.masterSecret)
x = x[len(s.masterSecret):]
x[0] = byte(len(s.certificates) >> 8)
x[1] = byte(len(s.certificates))
x = x[2:]
for _, cert := range s.certificates {
x[0] = byte(len(cert) >> 24)
x[1] = byte(len(cert) >> 16)
x[2] = byte(len(cert) >> 8)
x[3] = byte(len(cert))
copy(x[4:], cert)
x = x[4+len(cert):]
}
return ret
}
func (s *sessionState) unmarshal(data []byte) bool {
if len(data) < 8 {
return false
}
s.vers = uint16(data[0])<<8 | uint16(data[1])
s.cipherSuite = uint16(data[2])<<8 | uint16(data[3])
masterSecretLen := int(data[4])<<8 | int(data[5])
data = data[6:]
if len(data) < masterSecretLen {
return false
}
s.masterSecret = data[:masterSecretLen]
data = data[masterSecretLen:]
if len(data) < 2 {
return false
}
numCerts := int(data[0])<<8 | int(data[1])
data = data[2:]
s.certificates = make([][]byte, numCerts)
for i := range s.certificates {
if len(data) < 4 {
return false
}
certLen := int(data[0])<<24 | int(data[1])<<16 | int(data[2])<<8 | int(data[3])
data = data[4:]
if certLen < 0 {
return false
}
if len(data) < certLen {
return false
}
s.certificates[i] = data[:certLen]
data = data[certLen:]
}
if len(data) > 0 {
return false
}
return true
}
func (c *Conn) encryptTicket(state *sessionState) ([]byte, error) {
serialized := state.marshal()
encrypted := make([]byte, aes.BlockSize+len(serialized)+sha256.Size)
iv := encrypted[:aes.BlockSize]
macBytes := encrypted[len(encrypted)-sha256.Size:]
if _, err := io.ReadFull(c.config.rand(), iv); err != nil {
return nil, err
}
block, err := aes.NewCipher(c.config.SessionTicketKey[:16])
if err != nil {
return nil, errors.New("tls: failed to create cipher while encrypting ticket: " + err.Error())
}
cipher.NewCTR(block, iv).XORKeyStream(encrypted[aes.BlockSize:], serialized)
mac := hmac.New(sha256.New, c.config.SessionTicketKey[16:32])
mac.Write(encrypted[:len(encrypted)-sha256.Size])
mac.Sum(macBytes[:0])
return encrypted, nil
}
func (c *Conn) decryptTicket(encrypted []byte) (*sessionState, bool) {
if len(encrypted) < aes.BlockSize+sha256.Size {
return nil, false
}
iv := encrypted[:aes.BlockSize]
macBytes := encrypted[len(encrypted)-sha256.Size:]
mac := hmac.New(sha256.New, c.config.SessionTicketKey[16:32])
mac.Write(encrypted[:len(encrypted)-sha256.Size])
expected := mac.Sum(nil)
if subtle.ConstantTimeCompare(macBytes, expected) != 1 {
return nil, false
}
block, err := aes.NewCipher(c.config.SessionTicketKey[:16])
if err != nil {
return nil, false
}
ciphertext := encrypted[aes.BlockSize : len(encrypted)-sha256.Size]
plaintext := ciphertext
cipher.NewCTR(block, iv).XORKeyStream(plaintext, ciphertext)
state := new(sessionState)
ok := state.unmarshal(plaintext)
return state, ok
}

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vendor/github.com/masterzen/azure-sdk-for-go/core/tls/tls.go generated vendored Normal file
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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package tls partially implements TLS 1.2, as specified in RFC 5246.
package tls
import (
"crypto"
"crypto/ecdsa"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"errors"
"io/ioutil"
"net"
"strings"
)
// Server returns a new TLS server side connection
// using conn as the underlying transport.
// The configuration config must be non-nil and must have
// at least one certificate.
func Server(conn net.Conn, config *Config) *Conn {
return &Conn{conn: conn, config: config}
}
// Client returns a new TLS client side connection
// using conn as the underlying transport.
// Client interprets a nil configuration as equivalent to
// the zero configuration; see the documentation of Config
// for the defaults.
func Client(conn net.Conn, config *Config) *Conn {
return &Conn{conn: conn, config: config, isClient: true}
}
// A listener implements a network listener (net.Listener) for TLS connections.
type listener struct {
net.Listener
config *Config
}
// Accept waits for and returns the next incoming TLS connection.
// The returned connection c is a *tls.Conn.
func (l *listener) Accept() (c net.Conn, err error) {
c, err = l.Listener.Accept()
if err != nil {
return
}
c = Server(c, l.config)
return
}
// NewListener creates a Listener which accepts connections from an inner
// Listener and wraps each connection with Server.
// The configuration config must be non-nil and must have
// at least one certificate.
func NewListener(inner net.Listener, config *Config) net.Listener {
l := new(listener)
l.Listener = inner
l.config = config
return l
}
// Listen creates a TLS listener accepting connections on the
// given network address using net.Listen.
// The configuration config must be non-nil and must have
// at least one certificate.
func Listen(network, laddr string, config *Config) (net.Listener, error) {
if config == nil || len(config.Certificates) == 0 {
return nil, errors.New("tls.Listen: no certificates in configuration")
}
l, err := net.Listen(network, laddr)
if err != nil {
return nil, err
}
return NewListener(l, config), nil
}
// Dial connects to the given network address using net.Dial
// and then initiates a TLS handshake, returning the resulting
// TLS connection.
// Dial interprets a nil configuration as equivalent to
// the zero configuration; see the documentation of Config
// for the defaults.
func Dial(network, addr string, config *Config) (*Conn, error) {
raddr := addr
c, err := net.Dial(network, raddr)
if err != nil {
return nil, err
}
colonPos := strings.LastIndex(raddr, ":")
if colonPos == -1 {
colonPos = len(raddr)
}
hostname := raddr[:colonPos]
if config == nil {
config = defaultConfig()
}
// If no ServerName is set, infer the ServerName
// from the hostname we're connecting to.
if config.ServerName == "" {
// Make a copy to avoid polluting argument or default.
c := *config
c.ServerName = hostname
config = &c
}
conn := Client(c, config)
if err = conn.Handshake(); err != nil {
c.Close()
return nil, err
}
return conn, nil
}
// LoadX509KeyPair reads and parses a public/private key pair from a pair of
// files. The files must contain PEM encoded data.
func LoadX509KeyPair(certFile, keyFile string) (cert Certificate, err error) {
certPEMBlock, err := ioutil.ReadFile(certFile)
if err != nil {
return
}
keyPEMBlock, err := ioutil.ReadFile(keyFile)
if err != nil {
return
}
return X509KeyPair(certPEMBlock, keyPEMBlock)
}
// X509KeyPair parses a public/private key pair from a pair of
// PEM encoded data.
func X509KeyPair(certPEMBlock, keyPEMBlock []byte) (cert Certificate, err error) {
var certDERBlock *pem.Block
for {
certDERBlock, certPEMBlock = pem.Decode(certPEMBlock)
if certDERBlock == nil {
break
}
if certDERBlock.Type == "CERTIFICATE" {
cert.Certificate = append(cert.Certificate, certDERBlock.Bytes)
}
}
if len(cert.Certificate) == 0 {
err = errors.New("crypto/tls: failed to parse certificate PEM data")
return
}
var keyDERBlock *pem.Block
for {
keyDERBlock, keyPEMBlock = pem.Decode(keyPEMBlock)
if keyDERBlock == nil {
err = errors.New("crypto/tls: failed to parse key PEM data")
return
}
if keyDERBlock.Type == "PRIVATE KEY" || strings.HasSuffix(keyDERBlock.Type, " PRIVATE KEY") {
break
}
}
cert.PrivateKey, err = parsePrivateKey(keyDERBlock.Bytes)
if err != nil {
return
}
// We don't need to parse the public key for TLS, but we so do anyway
// to check that it looks sane and matches the private key.
x509Cert, err := x509.ParseCertificate(cert.Certificate[0])
if err != nil {
return
}
switch pub := x509Cert.PublicKey.(type) {
case *rsa.PublicKey:
priv, ok := cert.PrivateKey.(*rsa.PrivateKey)
if !ok {
err = errors.New("crypto/tls: private key type does not match public key type")
return
}
if pub.N.Cmp(priv.N) != 0 {
err = errors.New("crypto/tls: private key does not match public key")
return
}
case *ecdsa.PublicKey:
priv, ok := cert.PrivateKey.(*ecdsa.PrivateKey)
if !ok {
err = errors.New("crypto/tls: private key type does not match public key type")
return
}
if pub.X.Cmp(priv.X) != 0 || pub.Y.Cmp(priv.Y) != 0 {
err = errors.New("crypto/tls: private key does not match public key")
return
}
default:
err = errors.New("crypto/tls: unknown public key algorithm")
return
}
return
}
// Attempt to parse the given private key DER block. OpenSSL 0.9.8 generates
// PKCS#1 private keys by default, while OpenSSL 1.0.0 generates PKCS#8 keys.
// OpenSSL ecparam generates SEC1 EC private keys for ECDSA. We try all three.
func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
return key, nil
}
if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
switch key := key.(type) {
case *rsa.PrivateKey, *ecdsa.PrivateKey:
return key, nil
default:
return nil, errors.New("crypto/tls: found unknown private key type in PKCS#8 wrapping")
}
}
if key, err := x509.ParseECPrivateKey(der); err == nil {
return key, nil
}
return nil, errors.New("crypto/tls: failed to parse private key")
}

88
vendor/github.com/masterzen/winrm/README.md generated vendored
View File

@ -65,24 +65,34 @@ For command-line usage check the [winrm-cli project](https://github.com/masterze
**Warning the API might be subject to change.** **Warning the API might be subject to change.**
For the fast version (this doesn't allow to send input to the command): For the fast version (this doesn't allow to send input to the command) and it's using HTTP as the transport:
```go ```go
import "github.com/masterzen/winrm/winrm" package main
client ,_:= winrm.NewClient(&EndPoint{Host:"localhost",Port:5985,HTTPS:false,Insecure:false,CACert:nil}, "Administrator", "secret") import (
"github.com/masterzen/winrm"
"os"
)
endpoint := winrm.NewEndpoint(host, 5986, false, false, nil, nil, nil, 0)
client, err := winrm.NewClient(endpoint, "Administrator", "secret")
if err != nil {
panic(err)
}
client.Run("ipconfig /all", os.Stdout, os.Stderr) client.Run("ipconfig /all", os.Stdout, os.Stderr)
``` ```
or or
```go ```go
package main
import ( import (
"github.com/masterzen/winrm/winrm" "github.com/masterzen/winrm"
"fmt" "fmt"
"os" "os"
) )
endpoint := winrm.NewEndpoint("localhost", 5985, false, false, nil) endpoint := winrm.NewEndpoint("localhost", 5985, false, false, nil, nil, nil, 0)
client, err := winrm.NewClient(endpoint,"Administrator", "secret") client, err := winrm.NewClient(endpoint,"Administrator", "secret")
if err != nil { if err != nil {
panic(err) panic(err)
@ -95,18 +105,47 @@ if err != nil {
``` ```
By passing a TransportDecorator in the Parameters struct it is possible to use different Transports (e.g. NTLM)
```go
package main
import (
"github.com/masterzen/winrm"
"fmt"
"os"
)
endpoint := winrm.NewEndpoint("localhost", 5985, false, false, nil, nil, nil, 0)
params := DefaultParameters
params.TransportDecorator = func() Transporter { return &ClientNTLM{} }
client, err := NewClientWithParameters(endpoint, "test", "test", params)
if err != nil {
panic(err)
}
_, err := client.RunWithInput("ipconfig", os.Stdout, os.Stderr, os.Stdin)
if err != nil {
panic(err)
}
```
For a more complex example, it is possible to call the various functions directly: For a more complex example, it is possible to call the various functions directly:
```go ```go
package main
import ( import (
"github.com/masterzen/winrm/winrm" "github.com/masterzen/winrm"
"fmt" "fmt"
"bytes" "bytes"
"os" "os"
) )
stdin := bytes.NewBufferString("ipconfig /all") stdin := bytes.NewBufferString("ipconfig /all")
endpoint := winrm.NewEndpoint("localhost",5985,false,false,nil) endpoint := winrm.NewEndpoint("localhost", 5985, false, false,nil, nil, nil, 0)
client , err := winrm.NewClient(endpoint, "Administrator", "secret") client , err := winrm.NewClient(endpoint, "Administrator", "secret")
if err != nil { if err != nil {
panic(err) panic(err)
@ -129,18 +168,37 @@ cmd.Wait()
shell.Close() shell.Close()
``` ```
### Pluggable authentication example: Negotiate/NTLM authentication For using HTTPS authentication with x 509 cert without checking the CA
Using the winrm.Parameters.TransportDecorator, it is possible to wrap or completely replace the outgoing http.RoundTripper. For example, use github.com/Azure/go-ntlmssp to plug in Negotiate/NTLM authentication :
```go ```go
package main
import ( import (
"github.com/masterzen/winrm/winrm" "github.com/masterzen/winrm"
"github.com/Azure/go-ntlmssp" "os"
"io/ioutil"
) )
params := winrm.DefaultParameters() clientCert, err := ioutil.ReadFile("path/to/cert")
params.TransportDecorator = func(t *http.Transport) http.RoundTripper { return ntlmssp.Negotiator{t} } if err != nil {
client, err := winrm.NewClientWithParameters(..., params) panic(err)
}
clientKey, err := ioutil.ReadFile("path/to/key")
if err != nil {
panic(err)
}
winrm.DefaultParameters.TransportDecorator = func() winrm.Transporter {
// winrm https module
return &winrm.ClientAuthRequest{}
}
endpoint := winrm.NewEndpoint(host, 5986, false, false, clientCert, clientKey, nil, 0)
client, err := winrm.NewClient(endpoint, "Administrator", ""
if err != nil {
panic(err)
}
client.Run("ipconfig /all", os.Stdout, os.Stderr)
``` ```
## Developing on WinRM ## Developing on WinRM

99
vendor/github.com/masterzen/winrm/auth.go generated vendored Normal file
View File

@ -0,0 +1,99 @@
package winrm
import (
"fmt"
"io/ioutil"
"strings"
"github.com/masterzen/azure-sdk-for-go/core/http"
"github.com/masterzen/azure-sdk-for-go/core/tls"
"github.com/masterzen/winrm/soap"
)
type ClientAuthRequest struct {
transport http.RoundTripper
}
func (c *ClientAuthRequest) Transport(endpoint *Endpoint) error {
cert, err := tls.X509KeyPair(endpoint.Cert, endpoint.Key)
if err != nil {
return err
}
transport := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: endpoint.Insecure,
Certificates: []tls.Certificate{cert},
},
ResponseHeaderTimeout: endpoint.Timeout,
}
if endpoint.CACert != nil && len(endpoint.CACert) > 0 {
certPool, err := readCACerts(endpoint.CACert)
if err != nil {
return err
}
transport.TLSClientConfig.RootCAs = certPool
}
c.transport = transport
return nil
}
// parse func reads the response body and return it as a string
func parse(response *http.Response) (string, error) {
// if we recived the content we expected
if strings.Contains(response.Header.Get("Content-Type"), "application/soap+xml") {
body, err := ioutil.ReadAll(response.Body)
defer func() {
// defer can modify the returned value before
// it is actually passed to the calling statement
if errClose := response.Body.Close(); errClose != nil && err == nil {
err = errClose
}
}()
if err != nil {
return "", fmt.Errorf("error while reading request body %s", err)
}
return string(body), nil
}
return "", fmt.Errorf("invalid content type")
}
func (c ClientAuthRequest) Post(client *Client, request *soap.SoapMessage) (string, error) {
httpClient := &http.Client{Transport: c.transport}
req, err := http.NewRequest("POST", client.url, strings.NewReader(request.String()))
if err != nil {
return "", fmt.Errorf("impossible to create http request %s", err)
}
req.Header.Set("Content-Type", soapXML+";charset=UTF-8")
req.Header.Set("Authorization", "http://schemas.dmtf.org/wbem/wsman/1/wsman/secprofile/https/mutual")
resp, err := httpClient.Do(req)
if err != nil {
return "", fmt.Errorf("unknown error %s", err)
}
body, err := parse(resp)
if err != nil {
return "", fmt.Errorf("http response error: %d - %s", resp.StatusCode, err.Error())
}
// if we have different 200 http status code
// we must replace the error
defer func() {
if resp.StatusCode != 200 {
body, err = "", fmt.Errorf("http error %d: %s", resp.StatusCode, body)
}
}()
return body, err
}

51
vendor/github.com/masterzen/winrm/client.go generated vendored
View File

@ -2,11 +2,9 @@ package winrm
import ( import (
"bytes" "bytes"
"crypto/tls"
"crypto/x509" "crypto/x509"
"fmt" "fmt"
"io" "io"
"net/http"
"github.com/masterzen/winrm/soap" "github.com/masterzen/winrm/soap"
) )
@ -18,8 +16,15 @@ type Client struct {
password string password string
useHTTPS bool useHTTPS bool
url string url string
http HttpPost http Transporter
transport http.RoundTripper }
// Transporter does different transporters
// and init a Post request based on them
type Transporter interface {
// init request baset on the transport configurations
Post(*Client, *soap.SoapMessage) (string, error)
Transport(*Endpoint) error
} }
// NewClient will create a new remote client on url, connecting with user and password // NewClient will create a new remote client on url, connecting with user and password
@ -31,46 +36,29 @@ func NewClient(endpoint *Endpoint, user, password string) (*Client, error) {
// NewClientWithParameters will create a new remote client on url, connecting with user and password // NewClientWithParameters will create a new remote client on url, connecting with user and password
// This function doesn't connect (connection happens only when CreateShell is called) // This function doesn't connect (connection happens only when CreateShell is called)
func NewClientWithParameters(endpoint *Endpoint, user, password string, params *Parameters) (*Client, error) { func NewClientWithParameters(endpoint *Endpoint, user, password string, params *Parameters) (*Client, error) {
transport, err := newTransport(endpoint)
// alloc a new client
client := &Client{ client := &Client{
Parameters: *params, Parameters: *params,
username: user, username: user,
password: password, password: password,
url: endpoint.url(), url: endpoint.url(),
http: PostRequest,
useHTTPS: endpoint.HTTPS, useHTTPS: endpoint.HTTPS,
transport: transport, // default transport
http: &clientRequest{},
} }
// switch to other transport if provided
if params.TransportDecorator != nil { if params.TransportDecorator != nil {
client.transport = params.TransportDecorator(transport) client.http = params.TransportDecorator()
} }
return client, err // set the transport to some endpoint configuration
if err := client.http.Transport(endpoint); err != nil {
return nil, fmt.Errorf("Can't parse this key and certs: %s", err)
} }
// newTransport will create a new HTTP Transport, return client, nil
// with options specified within the endpoint configuration
func newTransport(endpoint *Endpoint) (*http.Transport, error) {
transport := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: endpoint.Insecure,
},
ResponseHeaderTimeout: endpoint.Timeout,
}
if endpoint.CACert != nil && len(endpoint.CACert) > 0 {
certPool, err := readCACerts(endpoint.CACert)
if err != nil {
return nil, err
}
transport.TLSClientConfig.RootCAs = certPool
}
return transport, nil
} }
func readCACerts(certs []byte) (*x509.CertPool, error) { func readCACerts(certs []byte) (*x509.CertPool, error) {
@ -110,7 +98,7 @@ func (c *Client) NewShell(id string) *Shell {
// sendRequest exec the custom http func from the client // sendRequest exec the custom http func from the client
func (c *Client) sendRequest(request *soap.SoapMessage) (string, error) { func (c *Client) sendRequest(request *soap.SoapMessage) (string, error) {
return c.http(c, request) return c.http.Post(c, request)
} }
// Run will run command on the the remote host, writing the process stdout and stderr to // Run will run command on the the remote host, writing the process stdout and stderr to
@ -183,4 +171,5 @@ func (c Client) RunWithInput(command string, stdout, stderr io.Writer, stdin io.
cmd.Wait() cmd.Wait()
return cmd.ExitCode(), cmd.err return cmd.ExitCode(), cmd.err
} }

51
vendor/github.com/masterzen/winrm/http.go generated vendored
View File

@ -1,6 +1,7 @@
package winrm package winrm
import ( import (
"crypto/tls"
"fmt" "fmt"
"io/ioutil" "io/ioutil"
"net/http" "net/http"
@ -11,16 +12,19 @@ import (
var soapXML = "application/soap+xml" var soapXML = "application/soap+xml"
// HttpPost type func for handling http requests
type HttpPost func(*Client, *soap.SoapMessage) (string, error)
// body func reads the response body and return it as a string // body func reads the response body and return it as a string
func body(response *http.Response) (string, error) { func body(response *http.Response) (string, error) {
// if we recived the content we expected // if we recived the content we expected
if strings.Contains(response.Header.Get("Content-Type"), "application/soap+xml") { if strings.Contains(response.Header.Get("Content-Type"), "application/soap+xml") {
body, err := ioutil.ReadAll(response.Body) body, err := ioutil.ReadAll(response.Body)
defer response.Body.Close() defer func() {
// defer can modify the returned value before
// it is actually passed to the calling statement
if errClose := response.Body.Close(); errClose != nil && err == nil {
err = errClose
}
}()
if err != nil { if err != nil {
return "", fmt.Errorf("error while reading request body %s", err) return "", fmt.Errorf("error while reading request body %s", err)
} }
@ -31,9 +35,35 @@ func body(response *http.Response) (string, error) {
return "", fmt.Errorf("invalid content type") return "", fmt.Errorf("invalid content type")
} }
// PostRequest make post to the winrm soap service type clientRequest struct {
func PostRequest(client *Client, request *soap.SoapMessage) (string, error) { transport http.RoundTripper
httpClient := &http.Client{Transport: client.transport} }
func (c *clientRequest) Transport(endpoint *Endpoint) error {
transport := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: endpoint.Insecure,
},
ResponseHeaderTimeout: endpoint.Timeout,
}
if endpoint.CACert != nil && len(endpoint.CACert) > 0 {
certPool, err := readCACerts(endpoint.CACert)
if err != nil {
return err
}
transport.TLSClientConfig.RootCAs = certPool
}
c.transport = transport
return nil
}
// Post make post to the winrm soap service
func (c clientRequest) Post(client *Client, request *soap.SoapMessage) (string, error) {
httpClient := &http.Client{Transport: c.transport}
req, err := http.NewRequest("POST", client.url, strings.NewReader(request.String())) req, err := http.NewRequest("POST", client.url, strings.NewReader(request.String()))
if err != nil { if err != nil {
@ -50,9 +80,14 @@ func PostRequest(client *Client, request *soap.SoapMessage) (string, error) {
if err != nil { if err != nil {
return "", fmt.Errorf("http response error: %d - %s", resp.StatusCode, err.Error()) return "", fmt.Errorf("http response error: %d - %s", resp.StatusCode, err.Error())
} }
// if we have different 200 http status code
// we must replace the error
defer func() {
if resp.StatusCode != 200 { if resp.StatusCode != 200 {
return "", fmt.Errorf("http error: %d - %s", resp.StatusCode, body) body, err = "", fmt.Errorf("http error %d: %s", resp.StatusCode, body)
} }
}()
return body, err return body, err
} }

23
vendor/github.com/masterzen/winrm/ntlm.go generated vendored Normal file
View File

@ -0,0 +1,23 @@
package winrm
import (
ntlmssp "github.com/Azure/go-ntlmssp"
"github.com/masterzen/winrm/soap"
)
// ClientNTLM provides a transport via NTLMv2
type ClientNTLM struct {
clientRequest
}
// Transport creates the wrapped NTLM transport
func (c *ClientNTLM) Transport(endpoint *Endpoint) error {
c.clientRequest.Transport(endpoint)
c.clientRequest.transport = &ntlmssp.Negotiator{RoundTripper: c.clientRequest.transport}
return nil
}
// Post make post to the winrm soap service (forwarded to clientRequest implementation)
func (c ClientNTLM) Post(client *Client, request *soap.SoapMessage) (string, error) {
return c.clientRequest.Post(client, request)
}

6
vendor/github.com/masterzen/winrm/parameters.go generated vendored
View File

@ -1,16 +1,12 @@
package winrm package winrm
import (
"net/http"
)
// Parameters struct defines // Parameters struct defines
// metadata information and http transport config // metadata information and http transport config
type Parameters struct { type Parameters struct {
Timeout string Timeout string
Locale string Locale string
EnvelopeSize int EnvelopeSize int
TransportDecorator func(*http.Transport) http.RoundTripper TransportDecorator func() Transporter
} }
// DefaultParameters return constant config // DefaultParameters return constant config

38
vendor/github.com/packer-community/winrmcp/winrmcp/cp.go generated vendored
View File

@ -2,7 +2,6 @@ package winrmcp
import ( import (
"encoding/base64" "encoding/base64"
"errors"
"fmt" "fmt"
"io" "io"
"log" "log"
@ -16,7 +15,7 @@ import (
func doCopy(client *winrm.Client, config *Config, in io.Reader, toPath string) error { func doCopy(client *winrm.Client, config *Config, in io.Reader, toPath string) error {
tempFile, err := tempFileName() tempFile, err := tempFileName()
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Error generating unique filename: %v", err)) return fmt.Errorf("Error generating unique filename: %v", err)
} }
tempPath := "$env:TEMP\\" + tempFile tempPath := "$env:TEMP\\" + tempFile
@ -26,7 +25,7 @@ func doCopy(client *winrm.Client, config *Config, in io.Reader, toPath string) e
err = uploadContent(client, config.MaxOperationsPerShell, "%TEMP%\\"+tempFile, in) err = uploadContent(client, config.MaxOperationsPerShell, "%TEMP%\\"+tempFile, in)
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Error uploading file to %s: %v", tempPath, err)) return fmt.Errorf("Error uploading file to %s: %v", tempPath, err)
} }
if os.Getenv("WINRMCP_DEBUG") != "" { if os.Getenv("WINRMCP_DEBUG") != "" {
@ -35,7 +34,7 @@ func doCopy(client *winrm.Client, config *Config, in io.Reader, toPath string) e
err = restoreContent(client, tempPath, toPath) err = restoreContent(client, tempPath, toPath)
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Error restoring file from %s to %s: %v", tempPath, toPath, err)) return fmt.Errorf("Error restoring file from %s to %s: %v", tempPath, toPath, err)
} }
if os.Getenv("WINRMCP_DEBUG") != "" { if os.Getenv("WINRMCP_DEBUG") != "" {
@ -44,7 +43,7 @@ func doCopy(client *winrm.Client, config *Config, in io.Reader, toPath string) e
err = cleanupContent(client, tempPath) err = cleanupContent(client, tempPath)
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Error removing temporary file %s: %v", tempPath, err)) return fmt.Errorf("Error removing temporary file %s: %v", tempPath, err)
} }
return nil return nil
@ -66,7 +65,7 @@ func uploadContent(client *winrm.Client, maxChunks int, filePath string, reader
func uploadChunks(client *winrm.Client, filePath string, maxChunks int, reader io.Reader) (bool, error) { func uploadChunks(client *winrm.Client, filePath string, maxChunks int, reader io.Reader) (bool, error) {
shell, err := client.CreateShell() shell, err := client.CreateShell()
if err != nil { if err != nil {
return false, errors.New(fmt.Sprintf("Couldn't create shell: %v", err)) return false, fmt.Errorf("Couldn't create shell: %v", err)
} }
defer shell.Close() defer shell.Close()
@ -126,10 +125,20 @@ func restoreContent(client *winrm.Client, fromPath, toPath string) error {
} }
if (Test-Path $tmp_file_path) { if (Test-Path $tmp_file_path) {
$base64_lines = Get-Content $tmp_file_path $reader = [System.IO.File]::OpenText($tmp_file_path)
$base64_string = [string]::join("",$base64_lines) $writer = [System.IO.File]::OpenWrite($dest_file_path)
$bytes = [System.Convert]::FromBase64String($base64_string) try {
[System.IO.File]::WriteAllBytes($dest_file_path, $bytes) for(;;) {
$base64_line = $reader.ReadLine()
if ($base64_line -eq $null) { break }
$bytes = [System.Convert]::FromBase64String($base64_line)
$writer.write($bytes, 0, $bytes.Length)
}
}
finally {
$reader.Close()
$writer.Close()
}
} else { } else {
echo $null > $dest_file_path echo $null > $dest_file_path
} }
@ -155,7 +164,7 @@ func restoreContent(client *winrm.Client, fromPath, toPath string) error {
wg.Wait() wg.Wait()
if cmd.ExitCode() != 0 { if cmd.ExitCode() != 0 {
return errors.New(fmt.Sprintf("restore operation returned code=%d", cmd.ExitCode())) return fmt.Errorf("restore operation returned code=%d", cmd.ExitCode())
} }
return nil return nil
} }
@ -167,7 +176,10 @@ func cleanupContent(client *winrm.Client, filePath string) error {
} }
defer shell.Close() defer shell.Close()
cmd, _ := shell.Execute("powershell", "Remove-Item", filePath, "-ErrorAction SilentlyContinue") cmd, err := shell.Execute("powershell", "Remove-Item", filePath, "-ErrorAction SilentlyContinue")
if err != nil {
return err
}
cmd.Wait() cmd.Wait()
cmd.Close() cmd.Close()
@ -196,7 +208,7 @@ func appendContent(shell *winrm.Shell, filePath, content string) error {
wg.Wait() wg.Wait()
if cmd.ExitCode() != 0 { if cmd.ExitCode() != 0 {
return errors.New(fmt.Sprintf("upload operation returned code=%d", cmd.ExitCode())) return fmt.Errorf("upload operation returned code=%d", cmd.ExitCode())
} }
return nil return nil

2
vendor/github.com/packer-community/winrmcp/winrmcp/endpoint.go generated vendored
View File

@ -24,7 +24,7 @@ func parseEndpoint(addr string, https bool, insecure bool, caCert []byte, timeou
} else { } else {
shost, sport, err := net.SplitHostPort(addr) shost, sport, err := net.SplitHostPort(addr)
if err != nil { if err != nil {
return nil, errors.New(fmt.Sprintf("Couldn't convert \"%s\" to an address.", addr)) return nil, fmt.Errorf("Couldn't convert \"%s\" to an address.", addr)
} }
host = shost host = shost
port, err = strconv.Atoi(sport) port, err = strconv.Atoi(sport)

5
vendor/github.com/packer-community/winrmcp/winrmcp/ls.go generated vendored
View File

@ -2,7 +2,6 @@ package winrmcp
import ( import (
"encoding/xml" "encoding/xml"
"errors"
"fmt" "fmt"
"log" "log"
"os" "os"
@ -23,7 +22,7 @@ func fetchList(client *winrm.Client, remotePath string) ([]FileItem, error) {
script := fmt.Sprintf("Get-ChildItem %s", remotePath) script := fmt.Sprintf("Get-ChildItem %s", remotePath)
stdout, stderr, _, err := client.RunWithString("powershell -Command \""+script+" | ConvertTo-Xml -NoTypeInformation -As String\"", "") stdout, stderr, _, err := client.RunWithString("powershell -Command \""+script+" | ConvertTo-Xml -NoTypeInformation -As String\"", "")
if err != nil { if err != nil {
return nil, errors.New(fmt.Sprintf("Couldn't execute script %s: %v", script, err)) return nil, fmt.Errorf("Couldn't execute script %s: %v", script, err)
} }
if stderr != "" { if stderr != "" {
@ -36,7 +35,7 @@ func fetchList(client *winrm.Client, remotePath string) ([]FileItem, error) {
doc := pslist{} doc := pslist{}
err := xml.Unmarshal([]byte(stdout), &doc) err := xml.Unmarshal([]byte(stdout), &doc)
if err != nil { if err != nil {
return nil, errors.New(fmt.Sprintf("Couldn't parse results: %v", err)) return nil, fmt.Errorf("Couldn't parse results: %v", err)
} }
return convertFileItems(doc.Objects), nil return convertFileItems(doc.Objects), nil

10
vendor/github.com/packer-community/winrmcp/winrmcp/winrmcp.go generated vendored
View File

@ -1,10 +1,8 @@
package winrmcp package winrmcp
import ( import (
"errors"
"fmt" "fmt"
"io" "io"
"net/http"
"os" "os"
"path/filepath" "path/filepath"
"time" "time"
@ -26,7 +24,7 @@ type Config struct {
ConnectTimeout time.Duration ConnectTimeout time.Duration
OperationTimeout time.Duration OperationTimeout time.Duration
MaxOperationsPerShell int MaxOperationsPerShell int
TransportDecorator func(*http.Transport) http.RoundTripper TransportDecorator func() winrm.Transporter
} }
type Auth struct { type Auth struct {
@ -64,13 +62,13 @@ func New(addr string, config *Config) (*Winrmcp, error) {
func (fs *Winrmcp) Copy(fromPath, toPath string) error { func (fs *Winrmcp) Copy(fromPath, toPath string) error {
f, err := os.Open(fromPath) f, err := os.Open(fromPath)
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Couldn't read file %s: %v", fromPath, err)) return fmt.Errorf("Couldn't read file %s: %v", fromPath, err)
} }
defer f.Close() defer f.Close()
fi, err := f.Stat() fi, err := f.Stat()
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Couldn't stat file %s: %v", fromPath, err)) return fmt.Errorf("Couldn't stat file %s: %v", fromPath, err)
} }
if !fi.IsDir() { if !fi.IsDir() {
@ -117,7 +115,7 @@ func (fw *fileWalker) copyFile(fromPath string, fi os.FileInfo, err error) error
f, err := os.Open(hostPath) f, err := os.Open(hostPath)
if err != nil { if err != nil {
return errors.New(fmt.Sprintf("Couldn't read file %s: %v", fromPath, err)) return fmt.Errorf("Couldn't read file %s: %v", fromPath, err)
} }
return doCopy(fw.client, fw.config, f, winPath(toPath)) return doCopy(fw.client, fw.config, f, winPath(toPath))

22
vendor/vendor.json vendored
View File

@ -557,15 +557,28 @@
"path": "github.com/kr/fs", "path": "github.com/kr/fs",
"revision": "2788f0dbd16903de03cb8186e5c7d97b69ad387b" "revision": "2788f0dbd16903de03cb8186e5c7d97b69ad387b"
}, },
{
"checksumSHA1": "t7hEeujQesCSzjZIPcE80XgQ9M0=",
"path": "github.com/masterzen/azure-sdk-for-go/core/http",
"revision": "ee4f0065d00cd12b542f18f5bc45799e88163b12",
"revisionTime": "2016-10-14T13:56:28Z"
},
{
"checksumSHA1": "xJVMikTtYbfI2KqKeUXaO4292JU=",
"path": "github.com/masterzen/azure-sdk-for-go/core/tls",
"revision": "ee4f0065d00cd12b542f18f5bc45799e88163b12",
"revisionTime": "2016-10-14T13:56:28Z"
},
{ {
"checksumSHA1": "yg57Q4J8Ob0LoYvqDxsWZ6AHffE=", "checksumSHA1": "yg57Q4J8Ob0LoYvqDxsWZ6AHffE=",
"path": "github.com/masterzen/simplexml/dom", "path": "github.com/masterzen/simplexml/dom",
"revision": "95ba30457eb1121fa27753627c774c7cd4e90083" "revision": "95ba30457eb1121fa27753627c774c7cd4e90083"
}, },
{ {
"checksumSHA1": "BL8FA9MJQmmQBH5s9wYvhDWFk0Q=", "checksumSHA1": "24M48du3803/HG1uZTo5aQxmPNk=",
"path": "github.com/masterzen/winrm", "path": "github.com/masterzen/winrm",
"revision": "ef3efbb97f99fc204bd9c7edf778a0dbd9781baf" "revision": "a6cd420bebdc21d10c97296556295fcb99dd9635",
"revisionTime": "2017-01-16T07:57:11Z"
}, },
{ {
"checksumSHA1": "KTsgWipT3ennAAtaKxEZairxero=", "checksumSHA1": "KTsgWipT3ennAAtaKxEZairxero=",
@ -645,9 +658,10 @@
"revision": "179d4d0c4d8d407a32af483c2354df1d2c91e6c3" "revision": "179d4d0c4d8d407a32af483c2354df1d2c91e6c3"
}, },
{ {
"checksumSHA1": "Cfe+Uaa7inbFKsaRuUSaUVh8KJs=", "checksumSHA1": "CeruhvOoHGjNlO+8M7WSUUz1oXA=",
"path": "github.com/packer-community/winrmcp/winrmcp", "path": "github.com/packer-community/winrmcp/winrmcp",
"revision": "7f50d16167d327698b91ccd5363d8691865e2580" "revision": "eda77c146d051992c737322f60a4f690c9538aa1",
"revisionTime": "2017-01-17T09:42:35Z"
}, },
{ {
"checksumSHA1": "oaXvjFg802gS/wx1bx2gAQwa7XQ=", "checksumSHA1": "oaXvjFg802gS/wx1bx2gAQwa7XQ=",