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-rw-r--r--modules/markup/html.go14
1 files changed, 14 insertions, 0 deletions
diff --git a/modules/markup/html.go b/modules/markup/html.go
index 825a41dd1f..28533cdd3f 100644
--- a/modules/markup/html.go
+++ b/modules/markup/html.go
@@ -13,6 +13,8 @@ import (
"strings"
"code.gitea.io/gitea/modules/base"
+ "code.gitea.io/gitea/modules/git"
+ "code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
@@ -646,6 +648,9 @@ func fullSha1PatternProcessor(ctx *postProcessCtx, node *html.Node) {
// sha1CurrentPatternProcessor renders SHA1 strings to corresponding links that
// are assumed to be in the same repository.
func sha1CurrentPatternProcessor(ctx *postProcessCtx, node *html.Node) {
+ if ctx.metas == nil || ctx.metas["user"] == "" || ctx.metas["repo"] == "" || ctx.metas["repoPath"] == "" {
+ return
+ }
m := sha1CurrentPattern.FindStringSubmatchIndex(node.Data)
if m == nil {
return
@@ -657,6 +662,15 @@ func sha1CurrentPatternProcessor(ctx *postProcessCtx, node *html.Node) {
// but that is not always the case.
// Although unlikely, deadbeef and 1234567 are valid short forms of SHA1 hash
// as used by git and github for linking and thus we have to do similar.
+ // Because of this, we check to make sure that a matched hash is actually
+ // a commit in the repository before making it a link.
+ if _, err := git.NewCommand("rev-parse", "--verify", hash).RunInDirBytes(ctx.metas["repoPath"]); err != nil {
+ if !strings.Contains(err.Error(), "fatal: Needed a single revision") {
+ log.Debug("sha1CurrentPatternProcessor git rev-parse: %v", err)
+ }
+ return
+ }
+
replaceContent(node, m[2], m[3],
createCodeLink(util.URLJoin(setting.AppURL, ctx.metas["user"], ctx.metas["repo"], "commit", hash), base.ShortSha(hash)))
}