Check if the refspec matches before transforming

1 files changed, 14 insertions, 2 deletions

diff --git a/src/refspec.c b/src/refspec.c
index 77c58c84e..8689769f3 100644
--- a/src/refspec.c
+++ b/src/refspec.c
@@ -223,21 +223,33 @@ static int refspec_transform(
 
 int git_refspec_transform(git_buf *out, const git_refspec *spec, const char *name)
 {
-        git_buf_sanitize(out);
+	assert(out && spec && name);
+	git_buf_sanitize(out);
 
 	if (!spec->pattern)
 		return git_buf_puts(out, spec->dst);
 
+	if (!git_refspec_src_matches(spec, name)) {
+		giterr_set(GITERR_INVALID, "ref '%s' doesn't match the source", name);
+		return -1;
+	}
+
 	return refspec_transform(out, spec->src, spec->dst, name);
 }
 
 int git_refspec_rtransform(git_buf *out, const git_refspec *spec, const char *name)
 {
-        git_buf_sanitize(out);
+	assert(out && spec && name);
+	git_buf_sanitize(out);
 
 	if (!spec->pattern)
 		return git_buf_puts(out, spec->src);
 
+	if (!git_refspec_dst_matches(spec, name)) {
+		giterr_set(GITERR_INVALID, "ref '%s' doesn't match the destination", name);
+		return -1;
+	}
+
 	return refspec_transform(out, spec->dst, spec->src, name);
 }