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Clean up various use of escape/unescape functions for URL generation (#6334)

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* Use PathUnescape instead of QueryUnescape when working with branch names

Currently branch names with a '+' fail in certain situations because
QueryUnescape replaces the + character with a blank space.

Using PathUnescape should be better since it is defined as:

// PathUnescape is identical to QueryUnescape except that it does not
// unescape '+' to ' ' (space).

Fixes #6333

* Change error to match new function name

* Add new util function PathEscapeSegments

This function simply runs PathEscape on each segment of a path without
touching the forward slash itself. We want to use this instead of
PathEscape/QueryEscape in most cases because a forward slash is a valid name for a
branch etc... and we don't want that escaped in a URL.

Putting this in new file url.go and also moving a couple similar
functions into that file as well.

* Use EscapePathSegments where appropriate

Replace various uses of EscapePath/EscapeQuery with new
EscapePathSegments. Also remove uncessary uses of various
escape/unescape functions when the text had already been escaped or was
not escaped.

* Reformat comment to make drone build happy

* Remove no longer used url library

* Requested code changes
This commit is contained in:
mrsdizzie 2019-03-18 10:00:23 -04:00 • committed by techknowlogick
parent c151682fae
commit ca46385637
12 changed files with 80 additions and 68 deletions
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40
modules/util/util.go
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@ -5,12 +5,7 @@
package util
import (
"net/url"
"path"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
// OptionalBool a boolean that can be "null"
@ -56,41 +51,6 @@ func Max(a, b int) int {
return a
}
// URLJoin joins url components, like path.Join, but preserving contents
func URLJoin(base string, elems ...string) string {
if !strings.HasSuffix(base, "/") {
base += "/"
}
baseURL, err := url.Parse(base)
if err != nil {
log.Error(4, "URLJoin: Invalid base URL %s", base)
return ""
}
joinedPath := path.Join(elems...)
argURL, err := url.Parse(joinedPath)
if err != nil {
log.Error(4, "URLJoin: Invalid arg %s", joinedPath)
return ""
}
joinedURL := baseURL.ResolveReference(argURL).String()
if !baseURL.IsAbs() && !strings.HasPrefix(base, "/") {
return joinedURL[1:] // Removing leading '/' if needed
}
return joinedURL
}
// IsExternalURL checks if rawURL points to an external URL like http://example.com
func IsExternalURL(rawURL string) bool {
parsed, err := url.Parse(rawURL)
if err != nil {
return true
}
if len(parsed.Host) != 0 && strings.Replace(parsed.Host, "www.", "", 1) != strings.Replace(setting.Domain, "www.", "", 1) {
return true
}
return false
}
// Min min of two ints
func Min(a, b int) int {
if a > b {