Adding upstream version 9.0.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

7 files changed, 646 insertions, 0 deletions

diff --git a/routers/web/feed/branch.go b/routers/web/feed/branch.go
new file mode 100644
index 0000000..80ce2ad
--- /dev/null
+++ b/routers/web/feed/branch.go
@@ -0,0 +1,50 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowBranchFeed shows tags and/or releases on the repo as RSS / Atom feed
+func ShowBranchFeed(ctx *context.Context, repo *repo.Repository, formatType string) {
+	commits, err := ctx.Repo.Commit.CommitsByRange(0, 10, "")
+	if err != nil {
+		ctx.ServerError("ShowBranchFeed", err)
+		return
+	}
+
+	title := fmt.Sprintf("Latest commits for branch %s", ctx.Repo.BranchName)
+	link := &feeds.Link{Href: repo.HTMLURL() + "/" + ctx.Repo.BranchNameSubURL()}
+
+	feed := &feeds.Feed{
+		Title:       title,
+		Link:        link,
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	for _, commit := range commits {
+		feed.Items = append(feed.Items, &feeds.Item{
+			Id:    commit.ID.String(),
+			Title: strings.TrimSpace(strings.Split(commit.Message(), "\n")[0]),
+			Link:  &feeds.Link{Href: repo.HTMLURL() + "/commit/" + commit.ID.String()},
+			Author: &feeds.Author{
+				Name:  commit.Author.Name,
+				Email: commit.Author.Email,
+			},
+			Description: commit.Message(),
+			Content:     commit.Message(),
+		})
+	}
+
+	writeFeed(ctx, feed, formatType)
+}
diff --git a/routers/web/feed/convert.go b/routers/web/feed/convert.go
new file mode 100644
index 0000000..0f43346
--- /dev/null
+++ b/routers/web/feed/convert.go
@@ -0,0 +1,332 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+	"html"
+	"html/template"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	activities_model "code.gitea.io/gitea/models/activities"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/templates"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+	"github.com/jaytaylor/html2text"
+)
+
+func toBranchLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/src/branch/" + util.PathEscapeSegments(act.GetBranch())
+}
+
+func toTagLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/src/tag/" + util.PathEscapeSegments(act.GetTag())
+}
+
+func toIssueLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/issues/" + url.PathEscape(act.GetIssueInfos()[0])
+}
+
+func toPullLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/pulls/" + url.PathEscape(act.GetIssueInfos()[0])
+}
+
+func toSrcLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/src/" + util.PathEscapeSegments(act.GetBranch())
+}
+
+func toReleaseLink(ctx *context.Context, act *activities_model.Action) string {
+	return act.GetRepoAbsoluteLink(ctx) + "/releases/tag/" + util.PathEscapeSegments(act.GetBranch())
+}
+
+// renderMarkdown creates a minimal markdown render context from an action.
+// If rendering fails, the original markdown text is returned
+func renderMarkdown(ctx *context.Context, act *activities_model.Action, content string) template.HTML {
+	markdownCtx := &markup.RenderContext{
+		Ctx: ctx,
+		Links: markup.Links{
+			Base: act.GetRepoLink(ctx),
+		},
+		Type: markdown.MarkupName,
+		Metas: map[string]string{
+			"user": act.GetRepoUserName(ctx),
+			"repo": act.GetRepoName(ctx),
+		},
+	}
+	markdown, err := markdown.RenderString(markdownCtx, content)
+	if err != nil {
+		return templates.SanitizeHTML(content) // old code did so: use SanitizeHTML to render in tmpl
+	}
+	return markdown
+}
+
+// feedActionsToFeedItems convert gitea's Action feed to feeds Item
+func feedActionsToFeedItems(ctx *context.Context, actions activities_model.ActionList) (items []*feeds.Item, err error) {
+	for _, act := range actions {
+		act.LoadActUser(ctx)
+
+		// TODO: the code seems quite strange (maybe not right)
+		// sometimes it uses text content but sometimes it uses HTML content
+		// it should clearly defines which kind of content it should use for the feed items: plan text or rich HTML
+		var title, desc string
+		var content template.HTML
+
+		link := &feeds.Link{Href: act.GetCommentHTMLURL(ctx)}
+
+		// title
+		title = act.ActUser.GetDisplayName() + " "
+		var titleExtra template.HTML
+		switch act.OpType {
+		case activities_model.ActionCreateRepo:
+			titleExtra = ctx.Locale.Tr("action.create_repo", act.GetRepoAbsoluteLink(ctx), act.ShortRepoPath(ctx))
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+		case activities_model.ActionRenameRepo:
+			titleExtra = ctx.Locale.Tr("action.rename_repo", act.GetContent(), act.GetRepoAbsoluteLink(ctx), act.ShortRepoPath(ctx))
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+		case activities_model.ActionCommitRepo:
+			link.Href = toBranchLink(ctx, act)
+			if len(act.Content) != 0 {
+				titleExtra = ctx.Locale.Tr("action.commit_repo", act.GetRepoAbsoluteLink(ctx), link.Href, act.GetBranch(), act.ShortRepoPath(ctx))
+			} else {
+				titleExtra = ctx.Locale.Tr("action.create_branch", act.GetRepoAbsoluteLink(ctx), link.Href, act.GetBranch(), act.ShortRepoPath(ctx))
+			}
+		case activities_model.ActionCreateIssue:
+			link.Href = toIssueLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.create_issue", link.Href, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionCreatePullRequest:
+			link.Href = toPullLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.create_pull_request", link.Href, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionTransferRepo:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.transfer_repo", act.GetContent(), act.GetRepoAbsoluteLink(ctx), act.ShortRepoPath(ctx))
+		case activities_model.ActionPushTag:
+			link.Href = toTagLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.push_tag", act.GetRepoAbsoluteLink(ctx), link.Href, act.GetTag(), act.ShortRepoPath(ctx))
+		case activities_model.ActionCommentIssue:
+			issueLink := toIssueLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = issueLink
+			}
+			titleExtra = ctx.Locale.Tr("action.comment_issue", issueLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionMergePullRequest:
+			pullLink := toPullLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = pullLink
+			}
+			titleExtra = ctx.Locale.Tr("action.merge_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionAutoMergePullRequest:
+			pullLink := toPullLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = pullLink
+			}
+			titleExtra = ctx.Locale.Tr("action.auto_merge_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionCloseIssue:
+			issueLink := toIssueLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = issueLink
+			}
+			titleExtra = ctx.Locale.Tr("action.close_issue", issueLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionReopenIssue:
+			issueLink := toIssueLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = issueLink
+			}
+			titleExtra = ctx.Locale.Tr("action.reopen_issue", issueLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionClosePullRequest:
+			pullLink := toPullLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = pullLink
+			}
+			titleExtra = ctx.Locale.Tr("action.close_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionReopenPullRequest:
+			pullLink := toPullLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = pullLink
+			}
+			titleExtra = ctx.Locale.Tr("action.reopen_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionDeleteTag:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.delete_tag", act.GetRepoAbsoluteLink(ctx), act.GetTag(), act.ShortRepoPath(ctx))
+		case activities_model.ActionDeleteBranch:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.delete_branch", act.GetRepoAbsoluteLink(ctx), html.EscapeString(act.GetBranch()), act.ShortRepoPath(ctx))
+		case activities_model.ActionMirrorSyncPush:
+			srcLink := toSrcLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = srcLink
+			}
+			titleExtra = ctx.Locale.Tr("action.mirror_sync_push", act.GetRepoAbsoluteLink(ctx), srcLink, act.GetBranch(), act.ShortRepoPath(ctx))
+		case activities_model.ActionMirrorSyncCreate:
+			srcLink := toSrcLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = srcLink
+			}
+			titleExtra = ctx.Locale.Tr("action.mirror_sync_create", act.GetRepoAbsoluteLink(ctx), srcLink, act.GetBranch(), act.ShortRepoPath(ctx))
+		case activities_model.ActionMirrorSyncDelete:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.mirror_sync_delete", act.GetRepoAbsoluteLink(ctx), act.GetBranch(), act.ShortRepoPath(ctx))
+		case activities_model.ActionApprovePullRequest:
+			pullLink := toPullLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.approve_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionRejectPullRequest:
+			pullLink := toPullLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.reject_pull_request", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionCommentPull:
+			pullLink := toPullLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.comment_pull", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx))
+		case activities_model.ActionPublishRelease:
+			releaseLink := toReleaseLink(ctx, act)
+			if link.Href == "#" {
+				link.Href = releaseLink
+			}
+			titleExtra = ctx.Locale.Tr("action.publish_release", act.GetRepoAbsoluteLink(ctx), releaseLink, act.ShortRepoPath(ctx), act.Content)
+		case activities_model.ActionPullReviewDismissed:
+			pullLink := toPullLink(ctx, act)
+			titleExtra = ctx.Locale.Tr("action.review_dismissed", pullLink, act.GetIssueInfos()[0], act.ShortRepoPath(ctx), act.GetIssueInfos()[1])
+		case activities_model.ActionStarRepo:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.starred_repo", act.GetRepoAbsoluteLink(ctx), act.GetRepoPath(ctx))
+		case activities_model.ActionWatchRepo:
+			link.Href = act.GetRepoAbsoluteLink(ctx)
+			titleExtra = ctx.Locale.Tr("action.watched_repo", act.GetRepoAbsoluteLink(ctx), act.GetRepoPath(ctx))
+		default:
+			return nil, fmt.Errorf("unknown action type: %v", act.OpType)
+		}
+
+		// description & content
+		{
+			switch act.OpType {
+			case activities_model.ActionCommitRepo, activities_model.ActionMirrorSyncPush:
+				push := templates.ActionContent2Commits(act)
+
+				for _, commit := range push.Commits {
+					if len(desc) != 0 {
+						desc += "\n\n"
+					}
+					desc += fmt.Sprintf("<a href=\"%s\">%s</a>\n%s",
+						html.EscapeString(fmt.Sprintf("%s/commit/%s", act.GetRepoAbsoluteLink(ctx), commit.Sha1)),
+						commit.Sha1,
+						templates.RenderCommitMessage(ctx, commit.Message, nil),
+					)
+				}
+
+				if push.Len > 1 {
+					link = &feeds.Link{Href: fmt.Sprintf("%s/%s", setting.AppSubURL, push.CompareURL)}
+				} else if push.Len == 1 {
+					link = &feeds.Link{Href: fmt.Sprintf("%s/commit/%s", act.GetRepoAbsoluteLink(ctx), push.Commits[0].Sha1)}
+				}
+
+			case activities_model.ActionCreateIssue, activities_model.ActionCreatePullRequest:
+				desc = strings.Join(act.GetIssueInfos(), "#")
+				content = renderMarkdown(ctx, act, act.GetIssueContent(ctx))
+			case activities_model.ActionCommentIssue, activities_model.ActionApprovePullRequest, activities_model.ActionRejectPullRequest, activities_model.ActionCommentPull:
+				desc = act.GetIssueTitle(ctx)
+				comment := act.GetIssueInfos()[1]
+				if len(comment) != 0 {
+					desc += "\n\n" + string(renderMarkdown(ctx, act, comment))
+				}
+			case activities_model.ActionMergePullRequest, activities_model.ActionAutoMergePullRequest:
+				desc = act.GetIssueInfos()[1]
+			case activities_model.ActionCloseIssue, activities_model.ActionReopenIssue, activities_model.ActionClosePullRequest, activities_model.ActionReopenPullRequest:
+				desc = act.GetIssueTitle(ctx)
+			case activities_model.ActionPullReviewDismissed:
+				desc = ctx.Locale.TrString("action.review_dismissed_reason") + "\n\n" + act.GetIssueInfos()[2]
+			}
+		}
+		if len(content) == 0 {
+			content = templates.SanitizeHTML(desc)
+		}
+
+		// It's a common practice for feed generators to use plain text titles.
+		// See https://codeberg.org/forgejo/forgejo/pulls/1595
+		plainTitle, err := html2text.FromString(title+" "+string(titleExtra), html2text.Options{OmitLinks: true})
+		if err != nil {
+			return nil, err
+		}
+
+		items = append(items, &feeds.Item{
+			Title:       plainTitle,
+			Link:        link,
+			Description: desc,
+			IsPermaLink: "false",
+			Author: &feeds.Author{
+				Name:  act.ActUser.GetDisplayName(),
+				Email: act.ActUser.GetEmail(),
+			},
+			Id:      fmt.Sprintf("%v: %v", strconv.FormatInt(act.ID, 10), link.Href),
+			Created: act.CreatedUnix.AsTime(),
+			Content: string(content),
+		})
+	}
+	return items, err
+}
+
+// GetFeedType return if it is a feed request and altered name and feed type.
+func GetFeedType(name string, req *http.Request) (bool, string, string) {
+	if strings.HasSuffix(name, ".rss") ||
+		strings.Contains(req.Header.Get("Accept"), "application/rss+xml") {
+		return true, strings.TrimSuffix(name, ".rss"), "rss"
+	}
+
+	if strings.HasSuffix(name, ".atom") ||
+		strings.Contains(req.Header.Get("Accept"), "application/atom+xml") {
+		return true, strings.TrimSuffix(name, ".atom"), "atom"
+	}
+
+	return false, name, ""
+}
+
+// feedActionsToFeedItems convert gitea's Repo's Releases to feeds Item
+func releasesToFeedItems(ctx *context.Context, releases []*repo_model.Release) (items []*feeds.Item, err error) {
+	for _, rel := range releases {
+		err := rel.LoadAttributes(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		var title string
+		var content template.HTML
+
+		if rel.IsTag {
+			title = rel.TagName
+		} else {
+			title = rel.Title
+		}
+
+		link := &feeds.Link{Href: rel.HTMLURL()}
+		content, err = markdown.RenderString(&markup.RenderContext{
+			Ctx: ctx,
+			Links: markup.Links{
+				Base: rel.Repo.Link(),
+			},
+			Metas: rel.Repo.ComposeMetas(ctx),
+		}, rel.Note)
+		if err != nil {
+			return nil, err
+		}
+
+		items = append(items, &feeds.Item{
+			Title:   title,
+			Link:    link,
+			Created: rel.CreatedUnix.AsTime(),
+			Author: &feeds.Author{
+				Name:  rel.Publisher.GetDisplayName(),
+				Email: rel.Publisher.GetEmail(),
+			},
+			Id:      fmt.Sprintf("%v: %v", strconv.FormatInt(rel.ID, 10), link.Href),
+			Content: string(content),
+		})
+	}
+
+	return items, err
+}
diff --git a/routers/web/feed/file.go b/routers/web/feed/file.go
new file mode 100644
index 0000000..1ab768f
--- /dev/null
+++ b/routers/web/feed/file.go
@@ -0,0 +1,62 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowFileFeed shows tags and/or releases on the repo as RSS / Atom feed
+func ShowFileFeed(ctx *context.Context, repo *repo.Repository, formatType string) {
+	fileName := ctx.Repo.TreePath
+	if len(fileName) == 0 {
+		return
+	}
+	commits, err := ctx.Repo.GitRepo.CommitsByFileAndRange(
+		git.CommitsByFileAndRangeOptions{
+			Revision: ctx.Repo.RefName,
+			File:     fileName,
+			Page:     1,
+		})
+	if err != nil {
+		ctx.ServerError("ShowBranchFeed", err)
+		return
+	}
+
+	title := fmt.Sprintf("Latest commits for file %s", ctx.Repo.TreePath)
+
+	link := &feeds.Link{Href: repo.HTMLURL() + "/" + ctx.Repo.BranchNameSubURL() + "/" + util.PathEscapeSegments(ctx.Repo.TreePath)}
+
+	feed := &feeds.Feed{
+		Title:       title,
+		Link:        link,
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	for _, commit := range commits {
+		feed.Items = append(feed.Items, &feeds.Item{
+			Id:    commit.ID.String(),
+			Title: strings.TrimSpace(strings.Split(commit.Message(), "\n")[0]),
+			Link:  &feeds.Link{Href: repo.HTMLURL() + "/commit/" + commit.ID.String()},
+			Author: &feeds.Author{
+				Name:  commit.Author.Name,
+				Email: commit.Author.Email,
+			},
+			Description: commit.Message(),
+			Content:     commit.Message(),
+		})
+	}
+
+	writeFeed(ctx, feed, formatType)
+}
diff --git a/routers/web/feed/profile.go b/routers/web/feed/profile.go
new file mode 100644
index 0000000..08cbcd9
--- /dev/null
+++ b/routers/web/feed/profile.go
@@ -0,0 +1,87 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"time"
+
+	activities_model "code.gitea.io/gitea/models/activities"
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowUserFeedRSS show user activity as RSS feed
+func ShowUserFeedRSS(ctx *context.Context) {
+	showUserFeed(ctx, "rss")
+}
+
+// ShowUserFeedAtom show user activity as Atom feed
+func ShowUserFeedAtom(ctx *context.Context) {
+	showUserFeed(ctx, "atom")
+}
+
+// showUserFeed show user activity as RSS / Atom feed
+func showUserFeed(ctx *context.Context, formatType string) {
+	includePrivate := ctx.IsSigned && (ctx.Doer.IsAdmin || ctx.Doer.ID == ctx.ContextUser.ID)
+
+	actions, _, err := activities_model.GetFeeds(ctx, activities_model.GetFeedsOptions{
+		RequestedUser:   ctx.ContextUser,
+		Actor:           ctx.Doer,
+		IncludePrivate:  includePrivate,
+		OnlyPerformedBy: !ctx.ContextUser.IsOrganization(),
+		IncludeDeleted:  false,
+		Date:            ctx.FormString("date"),
+	})
+	if err != nil {
+		ctx.ServerError("GetFeeds", err)
+		return
+	}
+
+	ctxUserDescription, err := markdown.RenderString(&markup.RenderContext{
+		Ctx: ctx,
+		Links: markup.Links{
+			Base: ctx.ContextUser.HTMLURL(),
+		},
+		Metas: map[string]string{
+			"user": ctx.ContextUser.GetDisplayName(),
+		},
+	}, ctx.ContextUser.Description)
+	if err != nil {
+		ctx.ServerError("RenderString", err)
+		return
+	}
+
+	feed := &feeds.Feed{
+		Title:       ctx.Locale.TrString("home.feed_of", ctx.ContextUser.DisplayName()),
+		Link:        &feeds.Link{Href: ctx.ContextUser.HTMLURL()},
+		Description: string(ctxUserDescription),
+		Created:     time.Now(),
+	}
+
+	feed.Items, err = feedActionsToFeedItems(ctx, actions)
+	if err != nil {
+		ctx.ServerError("convert feed", err)
+		return
+	}
+
+	writeFeed(ctx, feed, formatType)
+}
+
+// writeFeed write a feeds.Feed as atom or rss to ctx.Resp
+func writeFeed(ctx *context.Context, feed *feeds.Feed, formatType string) {
+	if formatType == "atom" {
+		ctx.Resp.Header().Set("Content-Type", "application/atom+xml;charset=utf-8")
+		if err := feed.WriteAtom(ctx.Resp); err != nil {
+			ctx.ServerError("Render Atom failed", err)
+		}
+	} else {
+		ctx.Resp.Header().Set("Content-Type", "application/rss+xml;charset=utf-8")
+		if err := feed.WriteRss(ctx.Resp); err != nil {
+			ctx.ServerError("Render RSS failed", err)
+		}
+	}
+}
diff --git a/routers/web/feed/release.go b/routers/web/feed/release.go
new file mode 100644
index 0000000..fb6e3ad
--- /dev/null
+++ b/routers/web/feed/release.go
@@ -0,0 +1,52 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"time"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// shows tags and/or releases on the repo as RSS / Atom feed
+func ShowReleaseFeed(ctx *context.Context, repo *repo_model.Repository, isReleasesOnly bool, formatType string) {
+	releases, err := db.Find[repo_model.Release](ctx, repo_model.FindReleasesOptions{
+		IncludeTags: !isReleasesOnly,
+		RepoID:      ctx.Repo.Repository.ID,
+	})
+	if err != nil {
+		ctx.ServerError("GetReleasesByRepoID", err)
+		return
+	}
+
+	var title string
+	var link *feeds.Link
+
+	if isReleasesOnly {
+		title = ctx.Locale.TrString("repo.release.releases_for", repo.FullName())
+		link = &feeds.Link{Href: repo.HTMLURL() + "/release"}
+	} else {
+		title = ctx.Locale.TrString("repo.release.tags_for", repo.FullName())
+		link = &feeds.Link{Href: repo.HTMLURL() + "/tags"}
+	}
+
+	feed := &feeds.Feed{
+		Title:       title,
+		Link:        link,
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	feed.Items, err = releasesToFeedItems(ctx, releases)
+	if err != nil {
+		ctx.ServerError("releasesToFeedItems", err)
+		return
+	}
+
+	writeFeed(ctx, feed, formatType)
+}
diff --git a/routers/web/feed/render.go b/routers/web/feed/render.go
new file mode 100644
index 0000000..dc99fb4
--- /dev/null
+++ b/routers/web/feed/render.go
@@ -0,0 +1,19 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"code.gitea.io/gitea/services/context"
+)
+
+// RenderBranchFeed render format for branch or file
+func RenderBranchFeed(feedType string) func(ctx *context.Context) {
+	return func(ctx *context.Context) {
+		if ctx.Repo.TreePath == "" {
+			ShowBranchFeed(ctx, ctx.Repo.Repository, feedType)
+		} else {
+			ShowFileFeed(ctx, ctx.Repo.Repository, feedType)
+		}
+	}
+}
diff --git a/routers/web/feed/repo.go b/routers/web/feed/repo.go
new file mode 100644
index 0000000..a0033c7
--- /dev/null
+++ b/routers/web/feed/repo.go
@@ -0,0 +1,44 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package feed
+
+import (
+	"time"
+
+	activities_model "code.gitea.io/gitea/models/activities"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/services/context"
+
+	"github.com/gorilla/feeds"
+)
+
+// ShowRepoFeed shows user activity on the repo as RSS / Atom feed
+func ShowRepoFeed(ctx *context.Context, repo *repo_model.Repository, formatType string) {
+	actions, _, err := activities_model.GetFeeds(ctx, activities_model.GetFeedsOptions{
+		OnlyPerformedByActor: true,
+		RequestedRepo:        repo,
+		Actor:                ctx.Doer,
+		IncludePrivate:       true,
+		Date:                 ctx.FormString("date"),
+	})
+	if err != nil {
+		ctx.ServerError("GetFeeds", err)
+		return
+	}
+
+	feed := &feeds.Feed{
+		Title:       ctx.Locale.TrString("home.feed_of", repo.FullName()),
+		Link:        &feeds.Link{Href: repo.HTMLURL()},
+		Description: repo.Description,
+		Created:     time.Now(),
+	}
+
+	feed.Items, err = feedActionsToFeedItems(ctx, actions)
+	if err != nil {
+		ctx.ServerError("convert feed", err)
+		return
+	}
+
+	writeFeed(ctx, feed, formatType)
+}