506 lines
13 KiB
PHP
506 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* Cookie storage object
|
|
*
|
|
* @package Requests
|
|
* @subpackage Cookies
|
|
*/
|
|
|
|
/**
|
|
* Cookie storage object
|
|
*
|
|
* @package Requests
|
|
* @subpackage Cookies
|
|
*/
|
|
class Requests_Cookie {
|
|
/**
|
|
* Cookie name.
|
|
*
|
|
* @var string
|
|
*/
|
|
public $name;
|
|
|
|
/**
|
|
* Cookie value.
|
|
*
|
|
* @var string
|
|
*/
|
|
public $value;
|
|
|
|
/**
|
|
* Cookie attributes
|
|
*
|
|
* Valid keys are (currently) path, domain, expires, max-age, secure and
|
|
* httponly.
|
|
*
|
|
* @var Requests_Utility_CaseInsensitiveDictionary|array Array-like object
|
|
*/
|
|
public $attributes = array();
|
|
|
|
/**
|
|
* Cookie flags
|
|
*
|
|
* Valid keys are (currently) creation, last-access, persistent and
|
|
* host-only.
|
|
*
|
|
* @var array
|
|
*/
|
|
public $flags = array();
|
|
|
|
/**
|
|
* Reference time for relative calculations
|
|
*
|
|
* This is used in place of `time()` when calculating Max-Age expiration and
|
|
* checking time validity.
|
|
*
|
|
* @var int
|
|
*/
|
|
public $reference_time = 0;
|
|
|
|
/**
|
|
* Create a new cookie object
|
|
*
|
|
* @param string $name
|
|
* @param string $value
|
|
* @param array|Requests_Utility_CaseInsensitiveDictionary $attributes Associative array of attribute data
|
|
*/
|
|
public function __construct($name, $value, $attributes = array(), $flags = array(), $reference_time = null) {
|
|
$this->name = $name;
|
|
$this->value = $value;
|
|
$this->attributes = $attributes;
|
|
$default_flags = array(
|
|
'creation' => time(),
|
|
'last-access' => time(),
|
|
'persistent' => false,
|
|
'host-only' => true,
|
|
);
|
|
$this->flags = array_merge($default_flags, $flags);
|
|
|
|
$this->reference_time = time();
|
|
if ($reference_time !== null) {
|
|
$this->reference_time = $reference_time;
|
|
}
|
|
|
|
$this->normalize();
|
|
}
|
|
|
|
/**
|
|
* Check if a cookie is expired.
|
|
*
|
|
* Checks the age against $this->reference_time to determine if the cookie
|
|
* is expired.
|
|
*
|
|
* @return boolean True if expired, false if time is valid.
|
|
*/
|
|
public function is_expired() {
|
|
// RFC6265, s. 4.1.2.2:
|
|
// If a cookie has both the Max-Age and the Expires attribute, the Max-
|
|
// Age attribute has precedence and controls the expiration date of the
|
|
// cookie.
|
|
if (isset($this->attributes['max-age'])) {
|
|
$max_age = $this->attributes['max-age'];
|
|
return $max_age < $this->reference_time;
|
|
}
|
|
|
|
if (isset($this->attributes['expires'])) {
|
|
$expires = $this->attributes['expires'];
|
|
return $expires < $this->reference_time;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check if a cookie is valid for a given URI
|
|
*
|
|
* @param Requests_IRI $uri URI to check
|
|
* @return boolean Whether the cookie is valid for the given URI
|
|
*/
|
|
public function uri_matches(Requests_IRI $uri) {
|
|
if (!$this->domain_matches($uri->host)) {
|
|
return false;
|
|
}
|
|
|
|
if (!$this->path_matches($uri->path)) {
|
|
return false;
|
|
}
|
|
|
|
return empty($this->attributes['secure']) || $uri->scheme === 'https';
|
|
}
|
|
|
|
/**
|
|
* Check if a cookie is valid for a given domain
|
|
*
|
|
* @param string $string Domain to check
|
|
* @return boolean Whether the cookie is valid for the given domain
|
|
*/
|
|
public function domain_matches($string) {
|
|
if (!isset($this->attributes['domain'])) {
|
|
// Cookies created manually; cookies created by Requests will set
|
|
// the domain to the requested domain
|
|
return true;
|
|
}
|
|
|
|
$domain_string = $this->attributes['domain'];
|
|
if ($domain_string === $string) {
|
|
// The domain string and the string are identical.
|
|
return true;
|
|
}
|
|
|
|
// If the cookie is marked as host-only and we don't have an exact
|
|
// match, reject the cookie
|
|
if ($this->flags['host-only'] === true) {
|
|
return false;
|
|
}
|
|
|
|
if (strlen($string) <= strlen($domain_string)) {
|
|
// For obvious reasons, the string cannot be a suffix if the domain
|
|
// is shorter than the domain string
|
|
return false;
|
|
}
|
|
|
|
if (substr($string, -1 * strlen($domain_string)) !== $domain_string) {
|
|
// The domain string should be a suffix of the string.
|
|
return false;
|
|
}
|
|
|
|
$prefix = substr($string, 0, strlen($string) - strlen($domain_string));
|
|
if (substr($prefix, -1) !== '.') {
|
|
// The last character of the string that is not included in the
|
|
// domain string should be a %x2E (".") character.
|
|
return false;
|
|
}
|
|
|
|
// The string should be a host name (i.e., not an IP address).
|
|
return !preg_match('#^(.+\.)\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$#', $string);
|
|
}
|
|
|
|
/**
|
|
* Check if a cookie is valid for a given path
|
|
*
|
|
* From the path-match check in RFC 6265 section 5.1.4
|
|
*
|
|
* @param string $request_path Path to check
|
|
* @return boolean Whether the cookie is valid for the given path
|
|
*/
|
|
public function path_matches($request_path) {
|
|
if (empty($request_path)) {
|
|
// Normalize empty path to root
|
|
$request_path = '/';
|
|
}
|
|
|
|
if (!isset($this->attributes['path'])) {
|
|
// Cookies created manually; cookies created by Requests will set
|
|
// the path to the requested path
|
|
return true;
|
|
}
|
|
|
|
$cookie_path = $this->attributes['path'];
|
|
|
|
if ($cookie_path === $request_path) {
|
|
// The cookie-path and the request-path are identical.
|
|
return true;
|
|
}
|
|
|
|
if (strlen($request_path) > strlen($cookie_path) && substr($request_path, 0, strlen($cookie_path)) === $cookie_path) {
|
|
if (substr($cookie_path, -1) === '/') {
|
|
// The cookie-path is a prefix of the request-path, and the last
|
|
// character of the cookie-path is %x2F ("/").
|
|
return true;
|
|
}
|
|
|
|
if (substr($request_path, strlen($cookie_path), 1) === '/') {
|
|
// The cookie-path is a prefix of the request-path, and the
|
|
// first character of the request-path that is not included in
|
|
// the cookie-path is a %x2F ("/") character.
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Normalize cookie and attributes
|
|
*
|
|
* @return boolean Whether the cookie was successfully normalized
|
|
*/
|
|
public function normalize() {
|
|
foreach ($this->attributes as $key => $value) {
|
|
$orig_value = $value;
|
|
$value = $this->normalize_attribute($key, $value);
|
|
if ($value === null) {
|
|
unset($this->attributes[$key]);
|
|
continue;
|
|
}
|
|
|
|
if ($value !== $orig_value) {
|
|
$this->attributes[$key] = $value;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Parse an individual cookie attribute
|
|
*
|
|
* Handles parsing individual attributes from the cookie values.
|
|
*
|
|
* @param string $name Attribute name
|
|
* @param string|boolean $value Attribute value (string value, or true if empty/flag)
|
|
* @return mixed Value if available, or null if the attribute value is invalid (and should be skipped)
|
|
*/
|
|
protected function normalize_attribute($name, $value) {
|
|
switch (strtolower($name)) {
|
|
case 'expires':
|
|
// Expiration parsing, as per RFC 6265 section 5.2.1
|
|
if (is_int($value)) {
|
|
return $value;
|
|
}
|
|
|
|
$expiry_time = strtotime($value);
|
|
if ($expiry_time === false) {
|
|
return null;
|
|
}
|
|
|
|
return $expiry_time;
|
|
|
|
case 'max-age':
|
|
// Expiration parsing, as per RFC 6265 section 5.2.2
|
|
if (is_int($value)) {
|
|
return $value;
|
|
}
|
|
|
|
// Check that we have a valid age
|
|
if (!preg_match('/^-?\d+$/', $value)) {
|
|
return null;
|
|
}
|
|
|
|
$delta_seconds = (int) $value;
|
|
if ($delta_seconds <= 0) {
|
|
$expiry_time = 0;
|
|
}
|
|
else {
|
|
$expiry_time = $this->reference_time + $delta_seconds;
|
|
}
|
|
|
|
return $expiry_time;
|
|
|
|
case 'domain':
|
|
// Domains are not required as per RFC 6265 section 5.2.3
|
|
if (empty($value)) {
|
|
return null;
|
|
}
|
|
|
|
// Domain normalization, as per RFC 6265 section 5.2.3
|
|
if ($value[0] === '.') {
|
|
$value = substr($value, 1);
|
|
}
|
|
|
|
return $value;
|
|
|
|
default:
|
|
return $value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Format a cookie for a Cookie header
|
|
*
|
|
* This is used when sending cookies to a server.
|
|
*
|
|
* @return string Cookie formatted for Cookie header
|
|
*/
|
|
public function format_for_header() {
|
|
return sprintf('%s=%s', $this->name, $this->value);
|
|
}
|
|
|
|
/**
|
|
* Format a cookie for a Cookie header
|
|
*
|
|
* @codeCoverageIgnore
|
|
* @deprecated Use {@see Requests_Cookie::format_for_header}
|
|
* @return string
|
|
*/
|
|
public function formatForHeader() {
|
|
return $this->format_for_header();
|
|
}
|
|
|
|
/**
|
|
* Format a cookie for a Set-Cookie header
|
|
*
|
|
* This is used when sending cookies to clients. This isn't really
|
|
* applicable to client-side usage, but might be handy for debugging.
|
|
*
|
|
* @return string Cookie formatted for Set-Cookie header
|
|
*/
|
|
public function format_for_set_cookie() {
|
|
$header_value = $this->format_for_header();
|
|
if (!empty($this->attributes)) {
|
|
$parts = array();
|
|
foreach ($this->attributes as $key => $value) {
|
|
// Ignore non-associative attributes
|
|
if (is_numeric($key)) {
|
|
$parts[] = $value;
|
|
}
|
|
else {
|
|
$parts[] = sprintf('%s=%s', $key, $value);
|
|
}
|
|
}
|
|
|
|
$header_value .= '; ' . implode('; ', $parts);
|
|
}
|
|
return $header_value;
|
|
}
|
|
|
|
/**
|
|
* Format a cookie for a Set-Cookie header
|
|
*
|
|
* @codeCoverageIgnore
|
|
* @deprecated Use {@see Requests_Cookie::format_for_set_cookie}
|
|
* @return string
|
|
*/
|
|
public function formatForSetCookie() {
|
|
return $this->format_for_set_cookie();
|
|
}
|
|
|
|
/**
|
|
* Get the cookie value
|
|
*
|
|
* Attributes and other data can be accessed via methods.
|
|
*/
|
|
public function __toString() {
|
|
return $this->value;
|
|
}
|
|
|
|
/**
|
|
* Parse a cookie string into a cookie object
|
|
*
|
|
* Based on Mozilla's parsing code in Firefox and related projects, which
|
|
* is an intentional deviation from RFC 2109 and RFC 2616. RFC 6265
|
|
* specifies some of this handling, but not in a thorough manner.
|
|
*
|
|
* @param string Cookie header value (from a Set-Cookie header)
|
|
* @return Requests_Cookie Parsed cookie object
|
|
*/
|
|
public static function parse($string, $name = '', $reference_time = null) {
|
|
$parts = explode(';', $string);
|
|
$kvparts = array_shift($parts);
|
|
|
|
if (!empty($name)) {
|
|
$value = $string;
|
|
}
|
|
elseif (strpos($kvparts, '=') === false) {
|
|
// Some sites might only have a value without the equals separator.
|
|
// Deviate from RFC 6265 and pretend it was actually a blank name
|
|
// (`=foo`)
|
|
//
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=169091
|
|
$name = '';
|
|
$value = $kvparts;
|
|
}
|
|
else {
|
|
list($name, $value) = explode('=', $kvparts, 2);
|
|
}
|
|
$name = trim($name);
|
|
$value = trim($value);
|
|
|
|
// Attribute key are handled case-insensitively
|
|
$attributes = new Requests_Utility_CaseInsensitiveDictionary();
|
|
|
|
if (!empty($parts)) {
|
|
foreach ($parts as $part) {
|
|
if (strpos($part, '=') === false) {
|
|
$part_key = $part;
|
|
$part_value = true;
|
|
}
|
|
else {
|
|
list($part_key, $part_value) = explode('=', $part, 2);
|
|
$part_value = trim($part_value);
|
|
}
|
|
|
|
$part_key = trim($part_key);
|
|
$attributes[$part_key] = $part_value;
|
|
}
|
|
}
|
|
|
|
return new Requests_Cookie($name, $value, $attributes, array(), $reference_time);
|
|
}
|
|
|
|
/**
|
|
* Parse all Set-Cookie headers from request headers
|
|
*
|
|
* @param Requests_Response_Headers $headers Headers to parse from
|
|
* @param Requests_IRI|null $origin URI for comparing cookie origins
|
|
* @param int|null $time Reference time for expiration calculation
|
|
* @return array
|
|
*/
|
|
public static function parse_from_headers(Requests_Response_Headers $headers, Requests_IRI $origin = null, $time = null) {
|
|
$cookie_headers = $headers->getValues('Set-Cookie');
|
|
if (empty($cookie_headers)) {
|
|
return array();
|
|
}
|
|
|
|
$cookies = array();
|
|
foreach ($cookie_headers as $header) {
|
|
$parsed = self::parse($header, '', $time);
|
|
|
|
// Default domain/path attributes
|
|
if (empty($parsed->attributes['domain']) && !empty($origin)) {
|
|
$parsed->attributes['domain'] = $origin->host;
|
|
$parsed->flags['host-only'] = true;
|
|
}
|
|
else {
|
|
$parsed->flags['host-only'] = false;
|
|
}
|
|
|
|
$path_is_valid = (!empty($parsed->attributes['path']) && $parsed->attributes['path'][0] === '/');
|
|
if (!$path_is_valid && !empty($origin)) {
|
|
$path = $origin->path;
|
|
|
|
// Default path normalization as per RFC 6265 section 5.1.4
|
|
if (substr($path, 0, 1) !== '/') {
|
|
// If the uri-path is empty or if the first character of
|
|
// the uri-path is not a %x2F ("/") character, output
|
|
// %x2F ("/") and skip the remaining steps.
|
|
$path = '/';
|
|
}
|
|
elseif (substr_count($path, '/') === 1) {
|
|
// If the uri-path contains no more than one %x2F ("/")
|
|
// character, output %x2F ("/") and skip the remaining
|
|
// step.
|
|
$path = '/';
|
|
}
|
|
else {
|
|
// Output the characters of the uri-path from the first
|
|
// character up to, but not including, the right-most
|
|
// %x2F ("/").
|
|
$path = substr($path, 0, strrpos($path, '/'));
|
|
}
|
|
$parsed->attributes['path'] = $path;
|
|
}
|
|
|
|
// Reject invalid cookie domains
|
|
if (!empty($origin) && !$parsed->domain_matches($origin->host)) {
|
|
continue;
|
|
}
|
|
|
|
$cookies[$parsed->name] = $parsed;
|
|
}
|
|
|
|
return $cookies;
|
|
}
|
|
|
|
/**
|
|
* Parse all Set-Cookie headers from request headers
|
|
*
|
|
* @codeCoverageIgnore
|
|
* @deprecated Use {@see Requests_Cookie::parse_from_headers}
|
|
* @return array
|
|
*/
|
|
public static function parseFromHeaders(Requests_Response_Headers $headers) {
|
|
return self::parse_from_headers($headers);
|
|
}
|
|
}
|