From ea1d09718ce2e3bf043c60bae76dd6bd7e84e9fe Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Thu, 2 Mar 2023 06:32:21 +0100
Subject: [PATCH] Fix commit retrieval by tag (#21804)

It is not correct to return tag data when commit data is requested, so
remove the hacky code that overwrote parts of a commit with parts of a
tag.

This fixes commit retrieval by tag for both the latest commit in the UI
and the commit info on tag webhook events.

Fixes: https://github.com/go-gitea/gitea/issues/21687
Replaces: https://github.com/go-gitea/gitea/pull/21693

<img width="324" alt="Screenshot 2022-11-13 at 15 26 37"
src="https://user-images.githubusercontent.com/115237/201526975-736c6ea7-ad6a-467a-a823-9a63d6ecb718.png">

<img width="789" alt="image"
src="https://user-images.githubusercontent.com/115237/201526876-90a13ffc-1e5c-4d76-911b-f1ae51e8eaab.png">

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
---
 modules/git/repo_commit_gogit.go              |  39 ------------------
 modules/git/repo_commit_nogogit.go            |   4 --
 modules/git/repo_commit_test.go               |   5 ++-
 modules/git/repo_ref_test.go                  |  12 ++++--
 modules/git/repo_stats_test.go                |   4 +-
 modules/git/repo_tag_test.go                  |   9 ++--
 modules/git/repo_test.go                      |   6 +--
 modules/git/tests/repos/repo1_bare/index      | Bin 0 -> 65 bytes
 modules/git/tests/repos/repo1_bare/logs/HEAD  |   1 +
 .../repos/repo1_bare/logs/refs/heads/master   |   1 +
 .../1c/91d130dc5fb75fd2d9f586a058650889cfe7fb | Bin 0 -> 813 bytes
 .../28/b55526e7100924d864dd89e35c1ea62e7a5a32 | Bin 0 -> 818 bytes
 .../36/f97d9a96457e2bab511db30fe2db03893ebc64 | Bin 0 -> 770 bytes
 .../4b/825dc642cb6eb9a060e54bf8d69288fbee4904 | Bin 0 -> 15 bytes
 .../93/3305878a3c9ad485c29b87fb662a73a9675c4b | Bin 0 -> 770 bytes
 .../ce/064814f4a0d337b333e646ece456cd39fab612 | Bin 0 -> 815 bytes
 .../cf/8b0b492a950b358a7ce7f9d01b18aef48a6b2d | Bin 0 -> 827 bytes
 .../tests/repos/repo1_bare/refs/heads/master  |   2 +-
 .../repos/repo1_bare/refs/tags/signed-tag     |   1 +
 19 files changed, 26 insertions(+), 58 deletions(-)
 create mode 100644 modules/git/tests/repos/repo1_bare/index
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/1c/91d130dc5fb75fd2d9f586a058650889cfe7fb
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/28/b55526e7100924d864dd89e35c1ea62e7a5a32
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/36/f97d9a96457e2bab511db30fe2db03893ebc64
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/4b/825dc642cb6eb9a060e54bf8d69288fbee4904
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/93/3305878a3c9ad485c29b87fb662a73a9675c4b
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/ce/064814f4a0d337b333e646ece456cd39fab612
 create mode 100644 modules/git/tests/repos/repo1_bare/objects/cf/8b0b492a950b358a7ce7f9d01b18aef48a6b2d
 create mode 100644 modules/git/tests/repos/repo1_bare/refs/tags/signed-tag

diff --git a/modules/git/repo_commit_gogit.go b/modules/git/repo_commit_gogit.go
index 72de158e6e..ce0af93614 100644
--- a/modules/git/repo_commit_gogit.go
+++ b/modules/git/repo_commit_gogit.go
@@ -7,7 +7,6 @@
 package git
 
 import (
-	"fmt"
 	"strings"
 
 	"github.com/go-git/go-git/v5/plumbing"
@@ -67,38 +66,6 @@ func (repo *Repository) IsCommitExist(name string) bool {
 	return err == nil
 }
 
-func convertPGPSignatureForTag(t *object.Tag) *CommitGPGSignature {
-	if t.PGPSignature == "" {
-		return nil
-	}
-
-	var w strings.Builder
-	var err error
-
-	if _, err = fmt.Fprintf(&w,
-		"object %s\ntype %s\ntag %s\ntagger ",
-		t.Target.String(), t.TargetType.Bytes(), t.Name); err != nil {
-		return nil
-	}
-
-	if err = t.Tagger.Encode(&w); err != nil {
-		return nil
-	}
-
-	if _, err = fmt.Fprintf(&w, "\n\n"); err != nil {
-		return nil
-	}
-
-	if _, err = fmt.Fprintf(&w, t.Message); err != nil {
-		return nil
-	}
-
-	return &CommitGPGSignature{
-		Signature: t.PGPSignature,
-		Payload:   strings.TrimSpace(w.String()) + "\n",
-	}
-}
-
 func (repo *Repository) getCommit(id SHA1) (*Commit, error) {
 	var tagObject *object.Tag
 
@@ -122,12 +89,6 @@ func (repo *Repository) getCommit(id SHA1) (*Commit, error) {
 	commit := convertCommit(gogitCommit)
 	commit.repo = repo
 
-	if tagObject != nil {
-		commit.CommitMessage = strings.TrimSpace(tagObject.Message)
-		commit.Author = &tagObject.Tagger
-		commit.Signature = convertPGPSignatureForTag(tagObject)
-	}
-
 	tree, err := gogitCommit.Tree()
 	if err != nil {
 		return nil, err
diff --git a/modules/git/repo_commit_nogogit.go b/modules/git/repo_commit_nogogit.go
index 7373d01c8e..d5eb723100 100644
--- a/modules/git/repo_commit_nogogit.go
+++ b/modules/git/repo_commit_nogogit.go
@@ -107,10 +107,6 @@ func (repo *Repository) getCommitFromBatchReader(rd *bufio.Reader, id SHA1) (*Co
 			return nil, err
 		}
 
-		commit.CommitMessage = strings.TrimSpace(tag.Message)
-		commit.Author = tag.Tagger
-		commit.Signature = tag.Signature
-
 		return commit, nil
 	case "commit":
 		commit, err := CommitFromReader(repo, id, io.LimitReader(rd, size))
diff --git a/modules/git/repo_commit_test.go b/modules/git/repo_commit_test.go
index af8c0592fe..729fb0ba10 100644
--- a/modules/git/repo_commit_test.go
+++ b/modules/git/repo_commit_test.go
@@ -43,12 +43,13 @@ func TestGetTagCommitWithSignature(t *testing.T) {
 	assert.NoError(t, err)
 	defer bareRepo1.Close()
 
-	commit, err := bareRepo1.GetCommit("3ad28a9149a2864384548f3d17ed7f38014c9e8a")
+	// both the tag and the commit are signed here, this validates only the commit signature
+	commit, err := bareRepo1.GetCommit("28b55526e7100924d864dd89e35c1ea62e7a5a32")
 	assert.NoError(t, err)
 	assert.NotNil(t, commit)
 	assert.NotNil(t, commit.Signature)
 	// test that signature is not in message
-	assert.Equal(t, "tag", commit.CommitMessage)
+	assert.Equal(t, "signed-commit\n", commit.CommitMessage)
 }
 
 func TestGetCommitWithBadCommitID(t *testing.T) {
diff --git a/modules/git/repo_ref_test.go b/modules/git/repo_ref_test.go
index 776d7ce3e1..c08ea12760 100644
--- a/modules/git/repo_ref_test.go
+++ b/modules/git/repo_ref_test.go
@@ -19,13 +19,14 @@ func TestRepository_GetRefs(t *testing.T) {
 	refs, err := bareRepo1.GetRefs()
 
 	assert.NoError(t, err)
-	assert.Len(t, refs, 5)
+	assert.Len(t, refs, 6)
 
 	expectedRefs := []string{
 		BranchPrefix + "branch1",
 		BranchPrefix + "branch2",
 		BranchPrefix + "master",
 		TagPrefix + "test",
+		TagPrefix + "signed-tag",
 		NotesRef,
 	}
 
@@ -43,9 +44,12 @@ func TestRepository_GetRefsFiltered(t *testing.T) {
 	refs, err := bareRepo1.GetRefsFiltered(TagPrefix)
 
 	assert.NoError(t, err)
-	if assert.Len(t, refs, 1) {
-		assert.Equal(t, TagPrefix+"test", refs[0].Name)
+	if assert.Len(t, refs, 2) {
+		assert.Equal(t, TagPrefix+"signed-tag", refs[0].Name)
 		assert.Equal(t, "tag", refs[0].Type)
-		assert.Equal(t, "3ad28a9149a2864384548f3d17ed7f38014c9e8a", refs[0].Object.String())
+		assert.Equal(t, "36f97d9a96457e2bab511db30fe2db03893ebc64", refs[0].Object.String())
+		assert.Equal(t, TagPrefix+"test", refs[1].Name)
+		assert.Equal(t, "tag", refs[1].Type)
+		assert.Equal(t, "3ad28a9149a2864384548f3d17ed7f38014c9e8a", refs[1].Object.String())
 	}
 }
diff --git a/modules/git/repo_stats_test.go b/modules/git/repo_stats_test.go
index 668ed67999..3d032385ee 100644
--- a/modules/git/repo_stats_test.go
+++ b/modules/git/repo_stats_test.go
@@ -24,9 +24,9 @@ func TestRepository_GetCodeActivityStats(t *testing.T) {
 	assert.NoError(t, err)
 	assert.NotNil(t, code)
 
-	assert.EqualValues(t, 9, code.CommitCount)
+	assert.EqualValues(t, 10, code.CommitCount)
 	assert.EqualValues(t, 3, code.AuthorCount)
-	assert.EqualValues(t, 9, code.CommitCountInAllBranches)
+	assert.EqualValues(t, 10, code.CommitCountInAllBranches)
 	assert.EqualValues(t, 10, code.Additions)
 	assert.EqualValues(t, 1, code.Deletions)
 	assert.Len(t, code.Authors, 3)
diff --git a/modules/git/repo_tag_test.go b/modules/git/repo_tag_test.go
index 589349a72c..8ccfec3eb2 100644
--- a/modules/git/repo_tag_test.go
+++ b/modules/git/repo_tag_test.go
@@ -25,11 +25,14 @@ func TestRepository_GetTags(t *testing.T) {
 		assert.NoError(t, err)
 		return
 	}
-	assert.Len(t, tags, 1)
+	assert.Len(t, tags, 2)
 	assert.Equal(t, len(tags), total)
-	assert.EqualValues(t, "test", tags[0].Name)
-	assert.EqualValues(t, "3ad28a9149a2864384548f3d17ed7f38014c9e8a", tags[0].ID.String())
+	assert.EqualValues(t, "signed-tag", tags[0].Name)
+	assert.EqualValues(t, "36f97d9a96457e2bab511db30fe2db03893ebc64", tags[0].ID.String())
 	assert.EqualValues(t, "tag", tags[0].Type)
+	assert.EqualValues(t, "test", tags[1].Name)
+	assert.EqualValues(t, "3ad28a9149a2864384548f3d17ed7f38014c9e8a", tags[1].ID.String())
+	assert.EqualValues(t, "tag", tags[1].Type)
 }
 
 func TestRepository_GetTag(t *testing.T) {
diff --git a/modules/git/repo_test.go b/modules/git/repo_test.go
index 2a39148192..044b9d4065 100644
--- a/modules/git/repo_test.go
+++ b/modules/git/repo_test.go
@@ -14,10 +14,10 @@ func TestGetLatestCommitTime(t *testing.T) {
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare")
 	lct, err := GetLatestCommitTime(DefaultContext, bareRepo1Path)
 	assert.NoError(t, err)
-	// Time is Sun Jul 21 22:43:13 2019 +0200
+	// Time is Sun Nov 13 16:40:14 2022 +0100
 	// which is the time of commit
-	// feaf4ba6bc635fec442f46ddd4512416ec43c2c2 (refs/heads/master)
-	assert.EqualValues(t, 1563741793, lct.Unix())
+	// ce064814f4a0d337b333e646ece456cd39fab612 (refs/heads/master)
+	assert.EqualValues(t, 1668354014, lct.Unix())
 }
 
 func TestRepoIsEmpty(t *testing.T) {
diff --git a/modules/git/tests/repos/repo1_bare/index b/modules/git/tests/repos/repo1_bare/index
new file mode 100644
index 0000000000000000000000000000000000000000..65d675154f23ffb2d0196e017d44a5e7017550f5
GIT binary patch
literal 65
zcmZ?q402{*U|<4bhL9jvS0E+HV4z^Y<=qr}%;|LA&IJiiy?<Pr)babBCri;)`-<AO
Tl}3xATFuWrGP@z+w&EiIWCj?s

literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/logs/HEAD b/modules/git/tests/repos/repo1_bare/logs/HEAD
index cef4ca2dcb..46da5fe0b1 100644
--- a/modules/git/tests/repos/repo1_bare/logs/HEAD
+++ b/modules/git/tests/repos/repo1_bare/logs/HEAD
@@ -1 +1,2 @@
 37991dec2c8e592043f47155ce4808d4580f9123 feaf4ba6bc635fec442f46ddd4512416ec43c2c2 silverwind <me@silverwind.io> 1563741799 +0200	push
+feaf4ba6bc635fec442f46ddd4512416ec43c2c2 ce064814f4a0d337b333e646ece456cd39fab612 silverwind <me@silverwind.io> 1668354026 +0100	push
diff --git a/modules/git/tests/repos/repo1_bare/logs/refs/heads/master b/modules/git/tests/repos/repo1_bare/logs/refs/heads/master
index cef4ca2dcb..46da5fe0b1 100644
--- a/modules/git/tests/repos/repo1_bare/logs/refs/heads/master
+++ b/modules/git/tests/repos/repo1_bare/logs/refs/heads/master
@@ -1 +1,2 @@
 37991dec2c8e592043f47155ce4808d4580f9123 feaf4ba6bc635fec442f46ddd4512416ec43c2c2 silverwind <me@silverwind.io> 1563741799 +0200	push
+feaf4ba6bc635fec442f46ddd4512416ec43c2c2 ce064814f4a0d337b333e646ece456cd39fab612 silverwind <me@silverwind.io> 1668354026 +0100	push
diff --git a/modules/git/tests/repos/repo1_bare/objects/1c/91d130dc5fb75fd2d9f586a058650889cfe7fb b/modules/git/tests/repos/repo1_bare/objects/1c/91d130dc5fb75fd2d9f586a058650889cfe7fb
new file mode 100644
index 0000000000000000000000000000000000000000..fb50b65f9ff04e722d4df5c734d8d64eb761f61a
GIT binary patch
literal 813
zcmV+|1Je9>0hN=<lA}fxMZM-La!<6CkR+f8x5LRih(S<DRP7iNgv2BS2-VkjxjVw%
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literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/28/b55526e7100924d864dd89e35c1ea62e7a5a32 b/modules/git/tests/repos/repo1_bare/objects/28/b55526e7100924d864dd89e35c1ea62e7a5a32
new file mode 100644
index 0000000000000000000000000000000000000000..7779599a06c8a22ca72e7ab6294a394a5961a3dc
GIT binary patch
literal 818
zcmV-21I_$+0hN<Wuc}BCMtjV!sJXdKK^280eLG#qQvrFX;F%SVLPSKtqsXtnr|(U=
zCq3!CM|&k-@(uPX`mSppK!U3B+heFIz$HeCT#<9Rl!&S#S%XEzE3B~+k|oX+$S~Is
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literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/36/f97d9a96457e2bab511db30fe2db03893ebc64 b/modules/git/tests/repos/repo1_bare/objects/36/f97d9a96457e2bab511db30fe2db03893ebc64
new file mode 100644
index 0000000000000000000000000000000000000000..c96b843902407e9468f8851fa80fc054dbb045c4
GIT binary patch
literal 770
zcmV+d1O5DX0d14HvZGcMMIG}M%Bg1%pbJ#FU1lD{jD&y;E{GXP7Z9MY_iMY#o%lq1
ztzg$l_MBA*o}+$y<ZTJ(11w3va7X6OWMo0pY);d32^dhqk~slb(EL5i!I8q|{aGI1
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z_||YHb<@>)#a4yE*<{=oq^kSRW4+?ewoecRe60M{4gf3atUrm_ZKuJdBTO#p#7zpv
zw=+DEDI2tQrM1)IBA$!L&xi%_R9=lc^ldi_EE^<D{&4%1l_(O`r%5HYiS?wj<;*d0
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zulhl6G1c84gT9Pj(ywxGhZdUNRKFe1Q_7zwv^N3u1`i286*iq(DN}sl>qf0kmy%_3
zI^viZ+2$w#wG4J4YM)gwqq++wU*E22AL3T147JBQtaBdjQiDbgiEY_PxGH&SEx$}`
z3nSeUm+>-8{!IY5Jp)=-!z7MU8^(T0&%@iOI(y7c`~C!<{Bq5pl=#|7;-*S^W4N5)
z^UxF~$_%+;Z%6oG;xSouf^x_DmVYKe;g(m@k&_*<FJ92irM)-hYnZb;xxcYcXjMK0
zOQn+lK`Pr$GqIjMNO7vYM0{FmCc^2GA9Kl2*?8mBq87=iJ^SRa%qGGhck>+QBKd9u
zA0m_9>7kwHsNy}bRB=vF#@Z^&eN~aN14N^1fBk{|K$8~!I}*i_|8F9H1G4HoaeVlG
AYybcN

literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/4b/825dc642cb6eb9a060e54bf8d69288fbee4904 b/modules/git/tests/repos/repo1_bare/objects/4b/825dc642cb6eb9a060e54bf8d69288fbee4904
new file mode 100644
index 0000000000000000000000000000000000000000..adf64119a33d7621aeeaa505d30adb58afaa5559
GIT binary patch
literal 15
Wcmb<m)YkO!4K+w$VBpeWVgvvgJ_3UP

literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/93/3305878a3c9ad485c29b87fb662a73a9675c4b b/modules/git/tests/repos/repo1_bare/objects/93/3305878a3c9ad485c29b87fb662a73a9675c4b
new file mode 100644
index 0000000000000000000000000000000000000000..e198e7658d2ace2b130a3831b3912e016dc33834
GIT binary patch
literal 770
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literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/ce/064814f4a0d337b333e646ece456cd39fab612 b/modules/git/tests/repos/repo1_bare/objects/ce/064814f4a0d337b333e646ece456cd39fab612
new file mode 100644
index 0000000000000000000000000000000000000000..93f1525e57972e8cfc311b65cd62e012291c6c28
GIT binary patch
literal 815
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literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/objects/cf/8b0b492a950b358a7ce7f9d01b18aef48a6b2d b/modules/git/tests/repos/repo1_bare/objects/cf/8b0b492a950b358a7ce7f9d01b18aef48a6b2d
new file mode 100644
index 0000000000000000000000000000000000000000..1152b25bb8318c8fcb2b11de4e18b0185eeef25f
GIT binary patch
literal 827
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literal 0
HcmV?d00001

diff --git a/modules/git/tests/repos/repo1_bare/refs/heads/master b/modules/git/tests/repos/repo1_bare/refs/heads/master
index c5e92eb229..9b0de22819 100644
--- a/modules/git/tests/repos/repo1_bare/refs/heads/master
+++ b/modules/git/tests/repos/repo1_bare/refs/heads/master
@@ -1 +1 @@
-feaf4ba6bc635fec442f46ddd4512416ec43c2c2
+ce064814f4a0d337b333e646ece456cd39fab612
diff --git a/modules/git/tests/repos/repo1_bare/refs/tags/signed-tag b/modules/git/tests/repos/repo1_bare/refs/tags/signed-tag
new file mode 100644
index 0000000000..3998a68507
--- /dev/null
+++ b/modules/git/tests/repos/repo1_bare/refs/tags/signed-tag
@@ -0,0 +1 @@
+36f97d9a96457e2bab511db30fe2db03893ebc64