Use link in UI which returned a relative url but not html_url which c…

…ontains an absolute url (go-gitea#21986)

partially fix go-gitea#19345

This PR add some `Link` methods for different objects. The `Link`
methods are not different from `HTMLURL`, they are lack of the absolute
URL. And most of UI `HTMLURL` have been replaced to `Link` so that users
can visit them from a different domain or IP.

This PR also introduces a new javascript configuration
`window.config.reqAppUrl` which is different from `appUrl` which is
still an absolute url but the domain has been replaced to the current
requested domain.

models/activities/action.go

@@ -223,6 +223,49 @@ func (a *Action) GetRepoAbsoluteLink() string {
 	return setting.AppURL + url.PathEscape(a.GetRepoUserName()) + "/" + url.PathEscape(a.GetRepoName())
 }
 
+// GetCommentHTMLURL returns link to action comment.
+func (a *Action) GetCommentHTMLURL() string {
+	return a.getCommentHTMLURL(db.DefaultContext)
+}
+
+func (a *Action) loadComment(ctx context.Context) (err error) {
+	if a.CommentID == 0 || a.Comment != nil {
+		return nil
+	}
+	a.Comment, err = issues_model.GetCommentByID(ctx, a.CommentID)
+	return err
+}
+
+func (a *Action) getCommentHTMLURL(ctx context.Context) string {
+	if a == nil {
+		return "#"
+	}
+	_ = a.loadComment(ctx)
+	if a.Comment != nil {
+		return a.Comment.HTMLURL()
+	}
+	if len(a.GetIssueInfos()) == 0 {
+		return "#"
+	}
+	// Return link to issue
+	issueIDString := a.GetIssueInfos()[0]
+	issueID, err := strconv.ParseInt(issueIDString, 10, 64)
+	if err != nil {
+		return "#"
+	}
+
+	issue, err := issues_model.GetIssueByID(ctx, issueID)
+	if err != nil {
+		return "#"
+	}
+
+	if err = issue.LoadRepo(ctx); err != nil {
+		return "#"
+	}
+
+	return issue.HTMLURL()
+}
+
 // GetCommentLink returns link to action comment.
 func (a *Action) GetCommentLink() string {
 	return a.getCommentLink(db.DefaultContext)
@@ -232,11 +275,9 @@ func (a *Action) getCommentLink(ctx context.Context) string {
 	if a == nil {
 		return "#"
 	}
-	if a.Comment == nil && a.CommentID != 0 {
-		a.Comment, _ = issues_model.GetCommentByID(ctx, a.CommentID)
-	}
+	_ = a.loadComment(ctx)
 	if a.Comment != nil {
-		return a.Comment.HTMLURL()
+		return a.Comment.Link()
 	}
 	if len(a.GetIssueInfos()) == 0 {
 		return "#"
@@ -257,7 +298,7 @@ func (a *Action) getCommentLink(ctx context.Context) string {
 		return "#"
 	}
 
-	return issue.HTMLURL()
+	return issue.Link()
 }
 
 // GetBranch returns the action's repository branch.

models/activities/action_test.go

@@ -36,7 +36,7 @@ func TestAction_GetRepoLink(t *testing.T) {
 	expected := path.Join(setting.AppSubURL, owner.Name, repo.Name)
 	assert.Equal(t, expected, action.GetRepoLink())
 	assert.Equal(t, repo.HTMLURL(), action.GetRepoAbsoluteLink())
-	assert.Equal(t, comment.HTMLURL(), action.GetCommentLink())
+	assert.Equal(t, comment.HTMLURL(), action.GetCommentHTMLURL())
 }
 
 func TestGetFeeds(t *testing.T) {

models/activities/notification.go

@@ -459,6 +459,22 @@ func (n *Notification) HTMLURL() string {
 	return ""
 }
 
+// Link formats a relative URL-string to the notification
+func (n *Notification) Link() string {
+	switch n.Source {
+	case NotificationSourceIssue, NotificationSourcePullRequest:
+		if n.Comment != nil {
+			return n.Comment.Link()
+		}
+		return n.Issue.Link()
+	case NotificationSourceCommit:
+		return n.Repository.Link() + "/commit/" + url.PathEscape(n.CommitID)
+	case NotificationSourceRepository:
+		return n.Repository.Link()
+	}
+	return ""
+}
+
 // APIURL formats a URL-string to the notification
 func (n *Notification) APIURL() string {
 	return setting.AppURL + "api/v1/notifications/threads/" + strconv.FormatInt(n.ID, 10)

models/issues/comment.go

@@ -391,21 +391,40 @@ func (c *Comment) HTMLURL() string {
 		log.Error("loadRepo(%d): %v", c.Issue.RepoID, err)
 		return ""
 	}
+	return c.Issue.HTMLURL() + c.hashLink()
+}
+
+// Link formats a relative URL-string to the issue-comment
+func (c *Comment) Link() string {
+	err := c.LoadIssue(db.DefaultContext)
+	if err != nil { // Silently dropping errors :unamused:
+		log.Error("LoadIssue(%d): %v", c.IssueID, err)
+		return ""
+	}
+	err = c.Issue.LoadRepo(db.DefaultContext)
+	if err != nil { // Silently dropping errors :unamused:
+		log.Error("loadRepo(%d): %v", c.Issue.RepoID, err)
+		return ""
+	}
+	return c.Issue.Link() + c.hashLink()
+}
+
+func (c *Comment) hashLink() string {
 	if c.Type == CommentTypeCode {
 		if c.ReviewID == 0 {
-			return fmt.Sprintf("%s/files#%s", c.Issue.HTMLURL(), c.HashTag())
+			return "/files#" + c.HashTag()
 		}
 		if c.Review == nil {
 			if err := c.LoadReview(); err != nil {
 				log.Warn("LoadReview(%d): %v", c.ReviewID, err)
-				return fmt.Sprintf("%s/files#%s", c.Issue.HTMLURL(), c.HashTag())
+				return "/files#" + c.HashTag()
 			}
 		}
 		if c.Review.Type <= ReviewTypePending {
-			return fmt.Sprintf("%s/files#%s", c.Issue.HTMLURL(), c.HashTag())
+			return "/files#" + c.HashTag()
 		}
 	}
-	return fmt.Sprintf("%s#%s", c.Issue.HTMLURL(), c.HashTag())
+	return "#" + c.HashTag()
 }
 
 // APIURL formats a API-string to the issue-comment
@@ -708,8 +727,8 @@ func (c *Comment) UnsignedLine() uint64 {
 	return uint64(c.Line)
 }
 
-// CodeCommentURL returns the url to a comment in code
-func (c *Comment) CodeCommentURL() string {
+// CodeCommentLink returns the url to a comment in code
+func (c *Comment) CodeCommentLink() string {
 	err := c.LoadIssue(db.DefaultContext)
 	if err != nil { // Silently dropping errors :unamused:
 		log.Error("LoadIssue(%d): %v", c.IssueID, err)
@@ -720,7 +739,7 @@ func (c *Comment) CodeCommentURL() string {
 		log.Error("loadRepo(%d): %v", c.Issue.RepoID, err)
 		return ""
 	}
-	return fmt.Sprintf("%s/files#%s", c.Issue.HTMLURL(), c.HashTag())
+	return fmt.Sprintf("%s/files#%s", c.Issue.Link(), c.HashTag())
 }
 
 // LoadPushCommits Load push commits

models/issues/issue.go

@@ -419,7 +419,7 @@ func (issue *Issue) HTMLURL() string {
 	return fmt.Sprintf("%s/%s/%d", issue.Repo.HTMLURL(), path, issue.Index)
 }
 
-// Link returns the Link URL to this issue.
+// Link returns the issue's relative URL.
 func (issue *Issue) Link() string {
 	var path string
 	if issue.IsPull {

models/issues/pull.go

@@ -759,20 +759,20 @@ func GetPullRequestsByHeadBranch(ctx context.Context, headBranch string, headRep
 	return prs, nil
 }
 
-// GetBaseBranchHTMLURL returns the HTML URL of the base branch
-func (pr *PullRequest) GetBaseBranchHTMLURL() string {
+// GetBaseBranchLink returns the relative URL of the base branch
+func (pr *PullRequest) GetBaseBranchLink() string {
 	if err := pr.LoadBaseRepo(db.DefaultContext); err != nil {
 		log.Error("LoadBaseRepo: %v", err)
 		return ""
 	}
 	if pr.BaseRepo == nil {
 		return ""
 	}
-	return pr.BaseRepo.HTMLURL() + "/src/branch/" + util.PathEscapeSegments(pr.BaseBranch)
+	return pr.BaseRepo.Link() + "/src/branch/" + util.PathEscapeSegments(pr.BaseBranch)
 }
 
-// GetHeadBranchHTMLURL returns the HTML URL of the head branch
-func (pr *PullRequest) GetHeadBranchHTMLURL() string {
+// GetHeadBranchLink returns the relative URL of the head branch
+func (pr *PullRequest) GetHeadBranchLink() string {
 	if pr.Flow == PullRequestFlowAGit {
 		return ""
 	}
@@ -784,7 +784,7 @@ func (pr *PullRequest) GetHeadBranchHTMLURL() string {
 	if pr.HeadRepo == nil {
 		return ""
 	}
-	return pr.HeadRepo.HTMLURL() + "/src/branch/" + util.PathEscapeSegments(pr.HeadBranch)
+	return pr.HeadRepo.Link() + "/src/branch/" + util.PathEscapeSegments(pr.HeadBranch)
 }
 
 // UpdateAllowEdits update if PR can be edited from maintainers

models/packages/descriptor.go

@@ -65,7 +65,7 @@ type PackageFileDescriptor struct {
 
 // PackageWebLink returns the package web link
 func (pd *PackageDescriptor) PackageWebLink() string {
-	return fmt.Sprintf("%s/-/packages/%s/%s", pd.Owner.HTMLURL(), string(pd.Package.Type), url.PathEscape(pd.Package.LowerName))
+	return fmt.Sprintf("%s/-/packages/%s/%s", pd.Owner.HomeLink(), string(pd.Package.Type), url.PathEscape(pd.Package.LowerName))
 }
 
 // FullWebLink returns the package version web link

models/project/project.go

@@ -116,6 +116,7 @@ func (p *Project) LoadRepo(ctx context.Context) (err error) {
 	return err
 }
 
+// Link returns the project's relative URL.
 func (p *Project) Link() string {
 	if p.OwnerID > 0 {
 		err := p.LoadOwner(db.DefaultContext)

models/repo/release.go

@@ -130,6 +130,11 @@ func (r *Release) HTMLURL() string {
 	return r.Repo.HTMLURL() + "/releases/tag/" + util.PathEscapeSegments(r.TagName)
 }
 
+// Link the relative url for a release on the web UI. release must have attributes loaded
+func (r *Release) Link() string {
+	return r.Repo.Link() + "/releases/tag/" + util.PathEscapeSegments(r.TagName)
+}
+
 // IsReleaseExist returns true if release with given tag name already exists.
 func IsReleaseExist(ctx context.Context, repoID int64, tagName string) (bool, error) {
 	if len(tagName) == 0 {

models/repo/repo.go

@@ -480,7 +480,7 @@ func (repo *Repository) RepoPath() string {
 	return RepoPath(repo.OwnerName, repo.Name)
 }
 
-// Link returns the repository link
+// Link returns the repository relative url
 func (repo *Repository) Link() string {
 	return setting.AppSubURL + "/" + url.PathEscape(repo.OwnerName) + "/" + url.PathEscape(repo.Name)
 }

modules/structs/repo.go

@@ -63,6 +63,7 @@ type Repository struct {
 	Language      string      `json:"language"`
 	LanguagesURL  string      `json:"languages_url"`
 	HTMLURL       string      `json:"html_url"`
+	Link          string      `json:"link"`
 	SSHURL        string      `json:"ssh_url"`
 	CloneURL      string      `json:"clone_url"`
 	OriginalURL   string      `json:"original_url"`

routers/web/feed/convert.go

@@ -73,7 +73,7 @@ func feedActionsToFeedItems(ctx *context.Context, actions activities_model.Actio
 
 		var content, desc, title string
 
-		link := &feeds.Link{Href: act.GetCommentLink()}
+		link := &feeds.Link{Href: act.GetCommentHTMLURL()}
 
 		// title
 		title = act.ActUser.DisplayName() + " "

routers/web/repo/pull.go

@@ -339,8 +339,8 @@ func setMergeTarget(ctx *context.Context, pull *issues_model.PullRequest) {
 		ctx.Data["HeadTarget"] = pull.MustHeadUserName(ctx) + "/" + pull.HeadRepo.Name + ":" + pull.HeadBranch
 	}
 	ctx.Data["BaseTarget"] = pull.BaseBranch
-	ctx.Data["HeadBranchHTMLURL"] = pull.GetHeadBranchHTMLURL()
-	ctx.Data["BaseBranchHTMLURL"] = pull.GetBaseBranchHTMLURL()
+	ctx.Data["HeadBranchLink"] = pull.GetHeadBranchLink()
+	ctx.Data["BaseBranchLink"] = pull.GetBaseBranchLink()
 }
 
 // PrepareMergedViewPullInfo show meta information for a merged pull request view page

routers/web/repo/repo.go

@@ -569,6 +569,7 @@ func SearchRepo(ctx *context.Context) {
 			Mirror:   repo.IsMirror,
 			Stars:    repo.NumStars,
 			HTMLURL:  repo.HTMLURL(),
+			Link:     repo.Link(),
 			Internal: !repo.IsPrivate && repo.Owner.Visibility == api.VisibleTypePrivate,
 		}
 	}

templates/code/searchresults.tmpl

@@ -13,13 +13,13 @@
 		<div class="diff-file-box diff-box file-content non-diff-file-content repo-search-result">
 			<h4 class="ui top attached normal header">
 				<span class="file">
-					<a rel="nofollow" href="{{$repo.HTMLURL}}">{{$repo.FullName}}</a>
+					<a rel="nofollow" href="{{$repo.Link}}">{{$repo.FullName}}</a>
 						{{if $repo.IsArchived}}
 							<span class="ui basic label">{{$.locale.Tr "repo.desc.archived"}}</span>
 						{{end}}
 					- {{.Filename}}
 				</span>
-				<a class="ui basic tiny button" rel="nofollow" href="{{$repo.HTMLURL}}/src/commit/{{$result.CommitID | PathEscape}}/{{.Filename | PathEscapeSegments}}">{{$.locale.Tr "repo.diff.view_file"}}</a>
+				<a class="ui basic tiny button" rel="nofollow" href="{{$repo.Link}}/src/commit/{{$result.CommitID | PathEscape}}/{{.Filename | PathEscapeSegments}}">{{$.locale.Tr "repo.diff.view_file"}}</a>
 			</h4>
 			<div class="ui attached table segment">
 				<div class="file-body file-code code-view">
@@ -28,7 +28,7 @@
 							<tr>
 								<td class="lines-num">
 									{{range .LineNumbers}}
-										<a href="{{$repo.HTMLURL}}/src/commit/{{$result.CommitID | PathEscape}}/{{$result.Filename | PathEscapeSegments}}#L{{.}}"><span>{{.}}</span></a>
+										<a href="{{$repo.Link}}/src/commit/{{$result.CommitID | PathEscape}}/{{$result.Filename | PathEscapeSegments}}#L{{.}}"><span>{{.}}</span></a>
 									{{end}}
 								</td>
 								<td class="lines-code chroma"><code class="code-inner">{{.FormattedLines | Safe}}</code></td>

templates/mail/issue/assigned.tmpl

@@ -8,7 +8,7 @@
 	<title>{{.Subject}}</title>
 </head>
 
-{{$repo_url := printf "<a href='%s'>%s</a>" (Escape .Issue.Repo.HTMLURL) (Escape .Issue.Repo.FullName)}}
+{{$repo_url := printf "<a href='%s'>%s</a>" (Escape .Issue.Repo.Link) (Escape .Issue.Repo.FullName)}}
 {{$link := printf "<a href='%s'>#%d</a>" (Escape .Link) .Issue.Index}}
 <body>
 	<p>

templates/mail/issue/default.tmpl

@@ -20,11 +20,11 @@
 	{{if eq .ActionName "push"}}
 		<p>
 			{{if .Comment.IsForcePush}}
-				{{$oldCommitUrl := printf "%s/commit/%s" .Comment.Issue.PullRequest.BaseRepo.HTMLURL .Comment.OldCommit}}
+				{{$oldCommitUrl := printf "%s/commit/%s" .Comment.Issue.PullRequest.BaseRepo.Link .Comment.OldCommit}}
 				{{$oldShortSha := ShortSha .Comment.OldCommit}}
 				{{$oldCommitLink := printf "<a href='%[1]s'><b>%[2]s</b></a>" (Escape $oldCommitUrl) (Escape $oldShortSha)}}
 
-				{{$newCommitUrl := printf "%s/commit/%s" .Comment.Issue.PullRequest.BaseRepo.HTMLURL .Comment.NewCommit}}
+				{{$newCommitUrl := printf "%s/commit/%s" .Comment.Issue.PullRequest.BaseRepo.Link .Comment.NewCommit}}
 				{{$newShortSha := ShortSha .Comment.NewCommit}}
 				{{$newCommitLink := printf "<a href='%[1]s'><b>%[2]s</b></a>" (Escape $newCommitUrl) (Escape $newShortSha)}}
 
@@ -72,7 +72,7 @@
 			<ul>
 			{{range .Comment.Commits}}
 				<li>
-					<a href="{{$.Comment.Issue.PullRequest.BaseRepo.HTMLURL}}/commit/{{.ID}}">
+					<a href="{{$.Comment.Issue.PullRequest.BaseRepo.Link}}/commit/{{.ID}}">
 						{{ShortSha .ID.String}}
 					</a>  -  {{.Summary}}
 				</li>

templates/mail/release.tmpl

@@ -11,8 +11,8 @@
 
 </head>
 
-{{$release_url := printf "<a href='%s'>%s</a>" (.Release.HTMLURL | Escape) (.Release.TagName | Escape)}}
-{{$repo_url := printf "<a href='%s'>%s</a>" (.Release.Repo.HTMLURL | Escape) (.Release.Repo.FullName | Escape)}}
+{{$release_url := printf "<a href='%s'>%s</a>" (.Release.Link | Escape) (.Release.TagName | Escape)}}
+{{$repo_url := printf "<a href='%s'>%s</a>" (.Release.Repo.Link | Escape) (.Release.Repo.FullName | Escape)}}
 <body>
 	<p>
 		{{.locale.Tr "mail.release.new.text" .Release.Publisher.Name $release_url $repo_url | Str2html}}

templates/package/shared/list.tmpl

@@ -28,7 +28,7 @@
 							{{$hasRepositoryAccess = index $.RepositoryAccessMap .Repository.ID}}
 						{{end}}
 						{{if $hasRepositoryAccess}}
-							{{$.locale.Tr "packages.published_by_in" $timeStr .Creator.HomeLink (.Creator.GetDisplayName | Escape) .Repository.HTMLURL (.Repository.FullName | Escape) | Safe}}
+							{{$.locale.Tr "packages.published_by_in" $timeStr .Creator.HomeLink (.Creator.GetDisplayName | Escape) .Repository.Link (.Repository.FullName | Escape) | Safe}}
 						{{else}}
 							{{$.locale.Tr "packages.published_by" $timeStr .Creator.HomeLink (.Creator.GetDisplayName | Escape) | Safe}}
 						{{end}}
@@ -41,7 +41,7 @@
 					{{svg "octicon-package" 32}}
 					<h2>{{.locale.Tr "packages.empty"}}</h2>
 					{{if and .Repository .CanWritePackages}}
-						{{$packagesUrl := URLJoin .Owner.HTMLURL "-" "packages"}}
+						{{$packagesUrl := URLJoin .Owner.HomeLink "-" "packages"}}
 						<p>{{.locale.Tr "packages.empty.repo" $packagesUrl | Safe}}</p>
 					{{end}}
 					<p>{{.locale.Tr "packages.empty.documentation" | Safe}}</p>