tests/bud.bats: add git source

Signed-off-by: Danish Prakash <contact@danishpraka.sh>

add.go

@@ -27,6 +27,7 @@ import (
 	"github.com/containers/image/v5/types"
 	"github.com/containers/storage/pkg/fileutils"
 	"github.com/containers/storage/pkg/idtools"
+	"github.com/containers/storage/pkg/regexp"
 	"github.com/docker/go-connections/tlsconfig"
 	"github.com/hashicorp/go-multierror"
 	digest "github.com/opencontainers/go-digest"
@@ -94,14 +95,27 @@ type AddAndCopyOptions struct {
 	RetryDelay time.Duration
 }
 
+// gitURLFragmentSuffix matches fragments to use as Git reference and build
+// context from the Git repository e.g.
+//
+//	github.com/containers/buildah.git
+//	github.com/containers/buildah.git#main
+//	github.com/containers/buildah.git#v1.35.0
+var gitURLFragmentSuffix = regexp.Delayed(`\.git(?:#.+)?$`)
+
 // sourceIsGit returns true if "source" is a git location.
 func sourceIsGit(source string) bool {
-	return strings.HasPrefix(source, "git://") || strings.Contains(source, ".git")
+	return isURL(source) && gitURLFragmentSuffix.MatchString(source)
+}
+
+func isURL(url string) bool {
+	return strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://")
 }
 
-// sourceIsRemote returns true if "source" is a remote location.
+// sourceIsRemote returns true if "source" is a remote location
+// and *not* a git repo. Certain github urls such as raw.github.* are allowed.
 func sourceIsRemote(source string) bool {
-	return (strings.HasPrefix(source, "http://") || strings.HasPrefix(source, "https://")) && !strings.Contains(source, ".git")
+	return isURL(source) && !gitURLFragmentSuffix.MatchString(source)
 }
 
 // getURL writes a tar archive containing the named content
@@ -482,12 +496,6 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 				go func() {
 					var cloneDir string
 					cloneDir, _, getErr = define.TempDirForURL(tmpdir.GetTempDir(), "", src)
-
-					renamedItems := 0
-					writer := io.WriteCloser(pipeWriter)
-					writer = newTarFilterer(writer, func(hdr *tar.Header) (bool, bool, io.Reader) {
-						return false, false, nil
-					})
 					getOptions := copier.GetOptions{
 						UIDMap:         srcUIDMap,
 						GIDMap:         srcGIDMap,
@@ -501,11 +509,9 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 						StripSetgidBit: options.StripSetgidBit,
 						StripStickyBit: options.StripStickyBit,
 					}
+					writer := io.WriteCloser(pipeWriter)
 					getErr = copier.Get(cloneDir, cloneDir, getOptions, []string{"."}, writer)
 					closeErr = writer.Close()
-					if renameTarget != "" && renamedItems > 1 {
-						renameErr = fmt.Errorf("internal error: renamed %d items when we expected to only rename 1", renamedItems)
-					}
 					wg.Done()
 				}()
 			} else {

define/types.go

@@ -254,11 +254,11 @@ func parseGitBuildContext(url string) (string, string, string) {
 	return gitBranchPart[0], gitSubdir, gitBranch
 }
 
-func isGitTag(remote, ref, dir string) (bool, error) {
+func isGitTag(remote, ref string) bool {
 	if _, err := exec.Command("git", "ls-remote", "--exit-code", remote, ref).Output(); err != nil {
-		return true, nil
+		return true
 	}
-	return false, nil
+	return false
 }
 
 func cloneToDirectory(url, dir string) ([]byte, string, error) {
@@ -279,7 +279,7 @@ func cloneToDirectory(url, dir string) ([]byte, string, error) {
 	}
 
 	if gitRef != "" {
-		if ok, _ := isGitTag(url, gitRef, dir); ok {
+		if ok := isGitTag(url, gitRef); ok {
 			gitRef += ":refs/tags/" + gitRef
 		}
 	}

tests/bud.bats

@@ -6875,3 +6875,30 @@ _EOF
   run_buildah 125 build --retry-delay=0.142857s --retry=14 --cert-dir ${TEST_SCRATCH_DIR} $cid ${TEST_SCRATCH_DIR}
   assert "$output" =~ "retrying in 142.*ms .*14/14.*"
 }
+
+@test "bud with ADD with git repository source" {
+  _prefetch alpine
+
+  local contextdir=${TEST_SCRATCH_DIR}/add-git
+  mkdir -p $contextdir
+  cat > $contextdir/Dockerfile << _EOF
+FROM alpine
+RUN apk add git
+
+ADD https://github.com/containers/podman.git#v5.0 /podman-branch
+ADD https://github.com/containers/podman.git#v5.0.0 /podman-tag
+_EOF
+
+  run_buildah build -f $contextdir/Dockerfile -t git-image $contextdir
+  run_buildah from --quiet $WITH_POLICY_JSON --name testctr git-image
+
+  run_buildah run testctr -- sh -c 'cd podman-branch && git rev-parse HEAD'
+  local_head_hash=$output
+  run_buildah run testctr -- sh -c 'cd podman-branch && git ls-remote origin v5.0 | cut -f1'
+  assert "$output" = "$local_head_hash"
+
+  run_buildah run testctr -- sh -c 'cd podman-tag && git rev-parse HEAD'
+  local_head_hash=$output
+  run_buildah run testctr -- sh -c 'cd podman-tag && git ls-remote --tags origin v5.0.0^{} | cut -f1'
+  assert "$output" = "$local_head_hash"
+}