Add push webhook support for mirrored repositories (#4127)

8 files changed, 257 insertions, 19 deletions

diff --git a/Gopkg.lock b/Gopkg.lock
index 04c7d18334..7126f73642 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -3,11 +3,11 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:42f77a668e3bd06812ef254f334d0d0a62346969fbcd3fa3a613e75067343751"
+  digest = "1:835585f8450b4ec12252d032b0f13e6571ecf846e49076f69067f2503a7c1e07"
   name = "code.gitea.io/git"
   packages = ["."]
   pruneopts = "NUT"
-  revision = "31f4b8e8c805438ac6d8914b38accb1d8aaf695e"
+  revision = "6ef79e80b3b06ca13a1f3a7b940903ebc73b44cb"
 
 [[projects]]
   branch = "master"
diff --git a/models/action.go b/models/action.go
index adf30bb88b..f3f89d143f 100644
--- a/models/action.go
+++ b/models/action.go
@@ -47,6 +47,9 @@ const (
 	ActionReopenPullRequest                       // 15
 	ActionDeleteTag                               // 16
 	ActionDeleteBranch                            // 17
+	ActionMirrorSyncPush                          // 18
+	ActionMirrorSyncCreate                        // 19
+	ActionMirrorSyncDelete                        // 20
 )
 
 var (
@@ -736,6 +739,71 @@ func MergePullRequestAction(actUser *User, repo *Repository, pull *Issue) error
 	return mergePullRequestAction(x, actUser, repo, pull)
 }
 
+func mirrorSyncAction(e Engine, opType ActionType, repo *Repository, refName string, data []byte) error {
+	if err := notifyWatchers(e, &Action{
+		ActUserID: repo.OwnerID,
+		ActUser:   repo.MustOwner(),
+		OpType:    opType,
+		RepoID:    repo.ID,
+		Repo:      repo,
+		IsPrivate: repo.IsPrivate,
+		RefName:   refName,
+		Content:   string(data),
+	}); err != nil {
+		return fmt.Errorf("notifyWatchers: %v", err)
+	}
+	return nil
+}
+
+// MirrorSyncPushActionOptions mirror synchronization action options.
+type MirrorSyncPushActionOptions struct {
+	RefName     string
+	OldCommitID string
+	NewCommitID string
+	Commits     *PushCommits
+}
+
+// MirrorSyncPushAction adds new action for mirror synchronization of pushed commits.
+func MirrorSyncPushAction(repo *Repository, opts MirrorSyncPushActionOptions) error {
+	if len(opts.Commits.Commits) > setting.UI.FeedMaxCommitNum {
+		opts.Commits.Commits = opts.Commits.Commits[:setting.UI.FeedMaxCommitNum]
+	}
+
+	apiCommits := opts.Commits.ToAPIPayloadCommits(repo.HTMLURL())
+
+	opts.Commits.CompareURL = repo.ComposeCompareURL(opts.OldCommitID, opts.NewCommitID)
+	apiPusher := repo.MustOwner().APIFormat()
+	if err := PrepareWebhooks(repo, HookEventPush, &api.PushPayload{
+		Ref:        opts.RefName,
+		Before:     opts.OldCommitID,
+		After:      opts.NewCommitID,
+		CompareURL: setting.AppURL + opts.Commits.CompareURL,
+		Commits:    apiCommits,
+		Repo:       repo.APIFormat(AccessModeOwner),
+		Pusher:     apiPusher,
+		Sender:     apiPusher,
+	}); err != nil {
+		return fmt.Errorf("PrepareWebhooks: %v", err)
+	}
+
+	data, err := json.Marshal(opts.Commits)
+	if err != nil {
+		return err
+	}
+
+	return mirrorSyncAction(x, ActionMirrorSyncPush, repo, opts.RefName, data)
+}
+
+// MirrorSyncCreateAction adds new action for mirror synchronization of new reference.
+func MirrorSyncCreateAction(repo *Repository, refName string) error {
+	return mirrorSyncAction(x, ActionMirrorSyncCreate, repo, refName, nil)
+}
+
+// MirrorSyncDeleteAction adds new action for mirror synchronization of delete reference.
+func MirrorSyncDeleteAction(repo *Repository, refName string) error {
+	return mirrorSyncAction(x, ActionMirrorSyncDelete, repo, refName, nil)
+}
+
 // GetFeedsOptions options for retrieving feeds
 type GetFeedsOptions struct {
 	RequestedUser    *User
diff --git a/models/repo_mirror.go b/models/repo_mirror.go
index 1431fcf916..447d055307 100644
--- a/models/repo_mirror.go
+++ b/models/repo_mirror.go
@@ -1,4 +1,5 @@
 // Copyright 2016 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -6,6 +7,7 @@ package models
 
 import (
 	"fmt"
+	"strings"
 	"time"
 
 	"code.gitea.io/git"
@@ -119,8 +121,68 @@ func (m *Mirror) SaveAddress(addr string) error {
 	return cfg.SaveToIndent(configPath, "\t")
 }
 
+// gitShortEmptySha Git short empty SHA
+const gitShortEmptySha = "0000000"
+
+// mirrorSyncResult contains information of a updated reference.
+// If the oldCommitID is "0000000", it means a new reference, the value of newCommitID is empty.
+// If the newCommitID is "0000000", it means the reference is deleted, the value of oldCommitID is empty.
+type mirrorSyncResult struct {
+	refName     string
+	oldCommitID string
+	newCommitID string
+}
+
+// parseRemoteUpdateOutput detects create, update and delete operations of references from upstream.
+func parseRemoteUpdateOutput(output string) []*mirrorSyncResult {
+	results := make([]*mirrorSyncResult, 0, 3)
+	lines := strings.Split(output, "\n")
+	for i := range lines {
+		// Make sure reference name is presented before continue
+		idx := strings.Index(lines[i], "-> ")
+		if idx == -1 {
+			continue
+		}
+
+		refName := lines[i][idx+3:]
+
+		switch {
+		case strings.HasPrefix(lines[i], " * "): // New reference
+			results = append(results, &mirrorSyncResult{
+				refName:     refName,
+				oldCommitID: gitShortEmptySha,
+			})
+		case strings.HasPrefix(lines[i], " - "): // Delete reference
+			results = append(results, &mirrorSyncResult{
+				refName:     refName,
+				newCommitID: gitShortEmptySha,
+			})
+		case strings.HasPrefix(lines[i], "   "): // New commits of a reference
+			delimIdx := strings.Index(lines[i][3:], " ")
+			if delimIdx == -1 {
+				log.Error(2, "SHA delimiter not found: %q", lines[i])
+				continue
+			}
+			shas := strings.Split(lines[i][3:delimIdx+3], "..")
+			if len(shas) != 2 {
+				log.Error(2, "Expect two SHAs but not what found: %q", lines[i])
+				continue
+			}
+			results = append(results, &mirrorSyncResult{
+				refName:     refName,
+				oldCommitID: shas[0],
+				newCommitID: shas[1],
+			})
+
+		default:
+			log.Warn("parseRemoteUpdateOutput: unexpected update line %q", lines[i])
+		}
+	}
+	return results
+}
+
 // runSync returns true if sync finished without error.
-func (m *Mirror) runSync() bool {
+func (m *Mirror) runSync() ([]*mirrorSyncResult, bool) {
 	repoPath := m.Repo.RepoPath()
 	wikiPath := m.Repo.WikiPath()
 	timeout := time.Duration(setting.Git.Timeout.Mirror) * time.Second
@@ -130,28 +192,30 @@ func (m *Mirror) runSync() bool {
 		gitArgs = append(gitArgs, "--prune")
 	}
 
-	if _, stderr, err := process.GetManager().ExecDir(
+	_, stderr, err := process.GetManager().ExecDir(
 		timeout, repoPath, fmt.Sprintf("Mirror.runSync: %s", repoPath),
-		"git", gitArgs...); err != nil {
+		"git", gitArgs...)
+	if err != nil {
 		// sanitize the output, since it may contain the remote address, which may
 		// contain a password
 		message, err := sanitizeOutput(stderr, repoPath)
 		if err != nil {
 			log.Error(4, "sanitizeOutput: %v", err)
-			return false
+			return nil, false
 		}
 		desc := fmt.Sprintf("Failed to update mirror repository '%s': %s", repoPath, message)
 		log.Error(4, desc)
 		if err = CreateRepositoryNotice(desc); err != nil {
 			log.Error(4, "CreateRepositoryNotice: %v", err)
 		}
-		return false
+		return nil, false
 	}
+	output := stderr
 
 	gitRepo, err := git.OpenRepository(repoPath)
 	if err != nil {
 		log.Error(4, "OpenRepository: %v", err)
-		return false
+		return nil, false
 	}
 	if err = SyncReleasesWithTags(m.Repo, gitRepo); err != nil {
 		log.Error(4, "Failed to synchronize tags to releases for repository: %v", err)
@@ -170,21 +234,21 @@ func (m *Mirror) runSync() bool {
 			message, err := sanitizeOutput(stderr, wikiPath)
 			if err != nil {
 				log.Error(4, "sanitizeOutput: %v", err)
-				return false
+				return nil, false
 			}
 			desc := fmt.Sprintf("Failed to update mirror wiki repository '%s': %s", wikiPath, message)
 			log.Error(4, desc)
 			if err = CreateRepositoryNotice(desc); err != nil {
 				log.Error(4, "CreateRepositoryNotice: %v", err)
 			}
-			return false
+			return nil, false
 		}
 	}
 
 	branches, err := m.Repo.GetBranches()
 	if err != nil {
 		log.Error(4, "GetBranches: %v", err)
-		return false
+		return nil, false
 	}
 
 	for i := range branches {
@@ -192,7 +256,7 @@ func (m *Mirror) runSync() bool {
 	}
 
 	m.UpdatedUnix = util.TimeStampNow()
-	return true
+	return parseRemoteUpdateOutput(output), true
 }
 
 func getMirrorByRepoID(e Engine, repoID int64) (*Mirror, error) {
@@ -268,7 +332,8 @@ func SyncMirrors() {
 			continue
 		}
 
-		if !m.runSync() {
+		results, ok := m.runSync()
+		if !ok {
 			continue
 		}
 
@@ -278,6 +343,66 @@ func SyncMirrors() {
 			continue
 		}
 
+		var gitRepo *git.Repository
+		if len(results) == 0 {
+			log.Trace("SyncMirrors [repo_id: %d]: no commits fetched", m.RepoID)
+		} else {
+			gitRepo, err = git.OpenRepository(m.Repo.RepoPath())
+			if err != nil {
+				log.Error(2, "OpenRepository [%d]: %v", m.RepoID, err)
+				continue
+			}
+		}
+
+		for _, result := range results {
+			// Discard GitHub pull requests, i.e. refs/pull/*
+			if strings.HasPrefix(result.refName, "refs/pull/") {
+				continue
+			}
+
+			// Create reference
+			if result.oldCommitID == gitShortEmptySha {
+				if err = MirrorSyncCreateAction(m.Repo, result.refName); err != nil {
+					log.Error(2, "MirrorSyncCreateAction [repo_id: %d]: %v", m.RepoID, err)
+				}
+				continue
+			}
+
+			// Delete reference
+			if result.newCommitID == gitShortEmptySha {
+				if err = MirrorSyncDeleteAction(m.Repo, result.refName); err != nil {
+					log.Error(2, "MirrorSyncDeleteAction [repo_id: %d]: %v", m.RepoID, err)
+				}
+				continue
+			}
+
+			// Push commits
+			oldCommitID, err := git.GetFullCommitID(gitRepo.Path, result.oldCommitID)
+			if err != nil {
+				log.Error(2, "GetFullCommitID [%d]: %v", m.RepoID, err)
+				continue
+			}
+			newCommitID, err := git.GetFullCommitID(gitRepo.Path, result.newCommitID)
+			if err != nil {
+				log.Error(2, "GetFullCommitID [%d]: %v", m.RepoID, err)
+				continue
+			}
+			commits, err := gitRepo.CommitsBetweenIDs(newCommitID, oldCommitID)
+			if err != nil {
+				log.Error(2, "CommitsBetweenIDs [repo_id: %d, new_commit_id: %s, old_commit_id: %s]: %v", m.RepoID, newCommitID, oldCommitID, err)
+				continue
+			}
+			if err = MirrorSyncPushAction(m.Repo, MirrorSyncPushActionOptions{
+				RefName:     result.refName,
+				OldCommitID: oldCommitID,
+				NewCommitID: newCommitID,
+				Commits:     ListToPushCommits(commits),
+			}); err != nil {
+				log.Error(2, "MirrorSyncPushAction [repo_id: %d]: %v", m.RepoID, err)
+				continue
+			}
+		}
+
 		// Get latest commit date and update to current repository updated time
 		commitDate, err := git.GetLatestCommitTime(m.Repo.RepoPath())
 		if err != nil {
diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index c46a293be8..d55c122df0 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -391,6 +391,8 @@ func ActionIcon(opType models.ActionType) string {
 		return "issue-closed"
 	case models.ActionReopenIssue, models.ActionReopenPullRequest:
 		return "issue-reopened"
+	case models.ActionMirrorSyncPush, models.ActionMirrorSyncCreate, models.ActionMirrorSyncDelete:
+		return "repo-clone"
 	default:
 		return "invalid type"
 	}
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index cd9895be19..9bd6f2e597 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -1663,6 +1663,9 @@ push_tag = pushed tag <a href="%s/src/tag/%s">%[2]s</a> to <a href="%[1]s">%[3]s
 delete_tag = deleted tag %[2]s from <a href="%[1]s">%[3]s</a>
 delete_branch = deleted branch %[2]s from <a href="%[1]s">%[3]s</a>
 compare_commits = Compare %d commits
+mirror_sync_push = synced commits to <a href="%[1]s/src/%[2]s">%[3]s</a> at <a href="%[1]s">%[4]s</a> from mirror
+mirror_sync_create = synced new reference <a href="%s/src/%s">%[2]s</a> to <a href="%[1]s">%[3]s</a> from mirror
+mirror_sync_delete = synced and deleted reference <code>%[2]s</code> at <a href="%[1]s">%[3]s</a> from mirror
 
 [tool]
 ago = %s ago
diff --git a/templates/user/dashboard/feeds.tmpl b/templates/user/dashboard/feeds.tmpl
index d9082a0f12..78950183b9 100644
--- a/templates/user/dashboard/feeds.tmpl
+++ b/templates/user/dashboard/feeds.tmpl
@@ -5,7 +5,7 @@
 		</div>
 		<div class="ui grid">
 			<div class="ui thirteen wide column">
-				<div class="{{if eq .GetOpType 5}}push news{{end}}">
+				<div class="{{if or (eq .GetOpType 5) (eq .GetOpType 18)}}push news{{end}}">
 					<p>
 						<a href="{{AppSubUrl}}/{{.GetActUserName}}" title="{{.GetActFullName}}">{{.ShortActUserName}}</a>
 						{{if eq .GetOpType 1}}
@@ -49,9 +49,16 @@
 						{{else if eq .GetOpType 17}}
 							{{ $index := index .GetIssueInfos 0}}
 							{{$.i18n.Tr "action.delete_branch" .GetRepoLink .GetBranch .ShortRepoPath | Str2html}}
+						{{else if eq .GetOpType 18}}
+							{{ $branchLink := .GetBranch | EscapePound}}
+							{{$.i18n.Tr "action.mirror_sync_push" .GetRepoLink $branchLink .GetBranch .ShortRepoPath | Str2html}}
+						{{else if eq .GetOpType 19}}
+							{{$.i18n.Tr "action.mirror_sync_create" .GetRepoLink .GetBranch .ShortRepoPath | Str2html}}
+						{{else if eq .GetOpType 20}}
+							{{$.i18n.Tr "action.mirror_sync_delete" .GetRepoLink .GetBranch .ShortRepoPath | Str2html}}
 						{{end}}
 					</p>
-					{{if eq .GetOpType 5}}
+					{{if or (eq .GetOpType 5) (eq .GetOpType 18)}}
 						<div class="content">
 							<ul>
 								{{ $push := ActionContent2Commits .}}
diff --git a/vendor/code.gitea.io/git/commit.go b/vendor/code.gitea.io/git/commit.go
index 299a2381b6..5e8c91d303 100644
--- a/vendor/code.gitea.io/git/commit.go
+++ b/vendor/code.gitea.io/git/commit.go
@@ -34,14 +34,18 @@ type CommitGPGSignature struct {
 }
 
 // similar to https://github.com/git/git/blob/3bc53220cb2dcf709f7a027a3f526befd021d858/commit.c#L1128
-func newGPGSignatureFromCommitline(data []byte, signatureStart int) (*CommitGPGSignature, error) {
+func newGPGSignatureFromCommitline(data []byte, signatureStart int, tag bool) (*CommitGPGSignature, error) {
 	sig := new(CommitGPGSignature)
 	signatureEnd := bytes.LastIndex(data, []byte("-----END PGP SIGNATURE-----"))
 	if signatureEnd == -1 {
 		return nil, fmt.Errorf("end of commit signature not found")
 	}
 	sig.Signature = strings.Replace(string(data[signatureStart:signatureEnd+27]), "\n ", "\n", -1)
-	sig.Payload = string(data[:signatureStart-8]) + string(data[signatureEnd+27:])
+	if tag {
+		sig.Payload = string(data[:signatureStart-1])
+	} else {
+		sig.Payload = string(data[:signatureStart-8]) + string(data[signatureEnd+27:])
+	}
 	return sig, nil
 }
 
@@ -274,3 +278,19 @@ func (c *Commit) GetSubModule(entryname string) (*SubModule, error) {
 	}
 	return nil, nil
 }
+
+// GetFullCommitID returns full length (40) of commit ID by given short SHA in a repository.
+func GetFullCommitID(repoPath, shortID string) (string, error) {
+	if len(shortID) >= 40 {
+		return shortID, nil
+	}
+
+	commitID, err := NewCommand("rev-parse", shortID).RunInDir(repoPath)
+	if err != nil {
+		if strings.Contains(err.Error(), "exit status 128") {
+			return "", ErrNotExist{shortID, ""}
+		}
+		return "", err
+	}
+	return strings.TrimSpace(commitID), nil
+}
diff --git a/vendor/code.gitea.io/git/repo_commit.go b/vendor/code.gitea.io/git/repo_commit.go
index 1acdfffb34..d5cab8f873 100644
--- a/vendor/code.gitea.io/git/repo_commit.go
+++ b/vendor/code.gitea.io/git/repo_commit.go
@@ -78,7 +78,7 @@ l:
 				}
 				commit.Committer = sig
 			case "gpgsig":
-				sig, err := newGPGSignatureFromCommitline(data, nextline+spacepos+1)
+				sig, err := newGPGSignatureFromCommitline(data, nextline+spacepos+1, false)
 				if err != nil {
 					return nil, err
 				}
@@ -86,7 +86,20 @@ l:
 			}
 			nextline += eol + 1
 		case eol == 0:
-			commit.CommitMessage = string(data[nextline+1:])
+			cm := string(data[nextline+1:])
+
+			// Tag GPG signatures are stored below the commit message
+			sigindex := strings.Index(cm, "-----BEGIN PGP SIGNATURE-----")
+			if sigindex != -1 {
+				sig, err := newGPGSignatureFromCommitline(data, (nextline+1)+sigindex, true)
+				if err == nil && sig != nil {
+					// remove signature from commit message
+					cm = cm[:sigindex-1]
+					commit.Signature = sig
+				}
+			}
+
+			commit.CommitMessage = cm
 			break l
 		default:
 			break l