9f82b75e57
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same. * removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context. * on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors. * added unit tests for step_download that are now CI tested on windows, mac & linux. * files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension` * since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted. * a download file is protected and locked by a file lock, * updated docs * updated go modules and vendors
44 lines
939 B
Go
44 lines
939 B
Go
package cleanhttp
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import (
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"net/http"
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"strings"
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"unicode"
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)
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// HandlerInput provides input options to cleanhttp's handlers
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type HandlerInput struct {
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ErrStatus int
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}
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// PrintablePathCheckHandler is a middleware that ensures the request path
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// contains only printable runes.
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func PrintablePathCheckHandler(next http.Handler, input *HandlerInput) http.Handler {
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// Nil-check on input to make it optional
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if input == nil {
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input = &HandlerInput{
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ErrStatus: http.StatusBadRequest,
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}
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}
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// Default to http.StatusBadRequest on error
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if input.ErrStatus == 0 {
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input.ErrStatus = http.StatusBadRequest
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}
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Check URL path for non-printable characters
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idx := strings.IndexFunc(r.URL.Path, func(c rune) bool {
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return !unicode.IsPrint(c)
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})
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if idx != -1 {
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w.WriteHeader(input.ErrStatus)
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return
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}
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next.ServeHTTP(w, r)
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return
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})
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}
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