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Fix modified files list in webhooks when there is a space (#16288)

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* Fix modified files list in webhooks when there is a space

There is an unfortunate bug with GetCommitFileStatus where files with
spaces are misparsed and split at the space.

There is a second bug because modern gits detect renames meaning that
this function no longer works correctly.

There is a third bug in that merge commits don't have their modified
files detected correctly.

Fix #15865


Signed-off-by: Andrew Thornton <art27@cantab.net>
tokarchuk/v1.17
zeripath 3 years ago committed by GitHub
parent 836884429a
commit 62c278e4ab
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 152 additions and 18 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 64
      modules/git/commit.go
  2. 106
      modules/git/commit_test.go

64
modules/git/commit.go
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@ -15,6 +15,8 @@ import (
"os/exec"
"strconv"
"strings"
"code.gitea.io/gitea/modules/log"
)
// Commit represents a git commit.
@ -432,33 +434,59 @@ func NewCommitFileStatus() *CommitFileStatus {
}
}
func parseCommitFileStatus(fileStatus *CommitFileStatus, stdout io.Reader) {
rd := bufio.NewReader(stdout)
peek, err := rd.Peek(1)
if err != nil {
if err != io.EOF {
log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
}
return
}
if peek[0] == '\n' || peek[0] == '\x00' {
_, _ = rd.Discard(1)
}
for {
modifier, err := rd.ReadSlice('\x00')
if err != nil {
if err != io.EOF {
log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
}
return
}
file, err := rd.ReadString('\x00')
if err != nil {
if err != io.EOF {
log.Error("Unexpected error whilst reading from git log --name-status. Error: %v", err)
}
return
}
file = file[:len(file)-1]
switch modifier[0] {
case 'A':
fileStatus.Added = append(fileStatus.Added, file)
case 'D':
fileStatus.Removed = append(fileStatus.Removed, file)
case 'M':
fileStatus.Modified = append(fileStatus.Modified, file)
}
}
}
// GetCommitFileStatus returns file status of commit in given repository.
func GetCommitFileStatus(repoPath, commitID string) (*CommitFileStatus, error) {
stdout, w := io.Pipe()
done := make(chan struct{})
fileStatus := NewCommitFileStatus()
go func() {
scanner := bufio.NewScanner(stdout)
for scanner.Scan() {
fields := strings.Fields(scanner.Text())
if len(fields) < 2 {
continue
}
switch fields[0][0] {
case 'A':
fileStatus.Added = append(fileStatus.Added, fields[1])
case 'D':
fileStatus.Removed = append(fileStatus.Removed, fields[1])
case 'M':
fileStatus.Modified = append(fileStatus.Modified, fields[1])
}
}
done <- struct{}{}
parseCommitFileStatus(fileStatus, stdout)
close(done)
}()
stderr := new(bytes.Buffer)
err := NewCommand("show", "--name-status", "--pretty=format:''", commitID).RunInDirPipeline(repoPath, w, stderr)
args := []string{"log", "--name-status", "-c", "--pretty=format:", "--parents", "--no-renames", "-z", "-1", commitID}
err := NewCommand(args...).RunInDirPipeline(repoPath, w, stderr)
w.Close() // Close writer to exit parsing goroutine
if err != nil {
return nil, ConcatenateError(err, stderr.String())

106
modules/git/commit_test.go
Unescape View File

@ -130,3 +130,109 @@ func TestHasPreviousCommit(t *testing.T) {
assert.NoError(t, err)
assert.False(t, selfNot)
}
func TestParseCommitFileStatus(t *testing.T) {
type testcase struct {
output string
added []string
removed []string
modified []string
}
kases := []testcase{
{
// Merge commit
output: "MM\x00options/locale/locale_en-US.ini\x00",
modified: []string{
"options/locale/locale_en-US.ini",
},
added: []string{},
removed: []string{},
},
{
// Spaces commit
output: "D\x00b\x00D\x00b b/b\x00A\x00b b/b b/b b/b\x00A\x00b b/b b/b b/b b/b\x00",
removed: []string{
"b",
"b b/b",
},
modified: []string{},
added: []string{
"b b/b b/b b/b",
"b b/b b/b b/b b/b",
},
},
{
// larger commit
output: "M\x00go.mod\x00M\x00go.sum\x00M\x00modules/ssh/ssh.go\x00M\x00vendor/github.com/gliderlabs/ssh/circle.yml\x00M\x00vendor/github.com/gliderlabs/ssh/context.go\x00A\x00vendor/github.com/gliderlabs/ssh/go.mod\x00A\x00vendor/github.com/gliderlabs/ssh/go.sum\x00M\x00vendor/github.com/gliderlabs/ssh/server.go\x00M\x00vendor/github.com/gliderlabs/ssh/session.go\x00M\x00vendor/github.com/gliderlabs/ssh/ssh.go\x00M\x00vendor/golang.org/x/sys/unix/mkerrors.sh\x00M\x00vendor/golang.org/x/sys/unix/syscall_darwin.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_freebsd_386.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_freebsd_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_freebsd_arm.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_freebsd_arm64.go\x00M\x00vendor/golang.org/x/sys/unix/zerrors_linux.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_dragonfly_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_freebsd_386.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_freebsd_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_freebsd_arm.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_freebsd_arm64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_netbsd_386.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_netbsd_amd64.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_netbsd_arm.go\x00M\x00vendor/golang.org/x/sys/unix/ztypes_netbsd_arm64.go\x00M\x00vendor/modules.txt\x00",
modified: []string{
"go.mod",
"go.sum",
"modules/ssh/ssh.go",
"vendor/github.com/gliderlabs/ssh/circle.yml",
"vendor/github.com/gliderlabs/ssh/context.go",
"vendor/github.com/gliderlabs/ssh/server.go",
"vendor/github.com/gliderlabs/ssh/session.go",
"vendor/github.com/gliderlabs/ssh/ssh.go",
"vendor/golang.org/x/sys/unix/mkerrors.sh",
"vendor/golang.org/x/sys/unix/syscall_darwin.go",
"vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go",
"vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go",
"vendor/golang.org/x/sys/unix/zerrors_freebsd_386.go",
"vendor/golang.org/x/sys/unix/zerrors_freebsd_amd64.go",
"vendor/golang.org/x/sys/unix/zerrors_freebsd_arm.go",
"vendor/golang.org/x/sys/unix/zerrors_freebsd_arm64.go",
"vendor/golang.org/x/sys/unix/zerrors_linux.go",
"vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go",
"vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go",
"vendor/golang.org/x/sys/unix/ztypes_dragonfly_amd64.go",
"vendor/golang.org/x/sys/unix/ztypes_freebsd_386.go",
"vendor/golang.org/x/sys/unix/ztypes_freebsd_amd64.go",
"vendor/golang.org/x/sys/unix/ztypes_freebsd_arm.go",
"vendor/golang.org/x/sys/unix/ztypes_freebsd_arm64.go",
"vendor/golang.org/x/sys/unix/ztypes_netbsd_386.go",
"vendor/golang.org/x/sys/unix/ztypes_netbsd_amd64.go",
"vendor/golang.org/x/sys/unix/ztypes_netbsd_arm.go",
"vendor/golang.org/x/sys/unix/ztypes_netbsd_arm64.go",
"vendor/modules.txt",
},
added: []string{
"vendor/github.com/gliderlabs/ssh/go.mod",
"vendor/github.com/gliderlabs/ssh/go.sum",
},
removed: []string{},
},
{
// git 1.7.2 adds an unnecessary \x00 on merge commit
output: "\x00MM\x00options/locale/locale_en-US.ini\x00",
modified: []string{
"options/locale/locale_en-US.ini",
},
added: []string{},
removed: []string{},
},
{
// git 1.7.2 adds an unnecessary \n on normal commit
output: "\nD\x00b\x00D\x00b b/b\x00A\x00b b/b b/b b/b\x00A\x00b b/b b/b b/b b/b\x00",
removed: []string{
"b",
"b b/b",
},
modified: []string{},
added: []string{
"b b/b b/b b/b",
"b b/b b/b b/b b/b",
},
},
}
for _, kase := range kases {
fileStatus := NewCommitFileStatus()
parseCommitFileStatus(fileStatus, strings.NewReader(kase.output))
assert.Equal(t, kase.added, fileStatus.Added)
assert.Equal(t, kase.removed, fileStatus.Removed)
assert.Equal(t, kase.modified, fileStatus.Modified)
}
}

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