1 files changed, 29 insertions, 25 deletions

diff --git a/commit.c b/commit.c
index 2d9de807a..494615d6f 100644
--- a/commit.c
+++ b/commit.c
@@ -245,7 +245,12 @@ void set_commit_buffer(struct commit *commit, void *buffer, unsigned long size)
 
 const void *get_cached_commit_buffer(const struct commit *commit, unsigned long *sizep)
 {
-	struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
+	struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+	if (!v) {
+		if (sizep)
+			*sizep = 0;
+		return NULL;
+	}
 	if (sizep)
 		*sizep = v->size;
 	return v->buffer;
@@ -272,24 +277,31 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
 
 void unuse_commit_buffer(const struct commit *commit, const void *buffer)
 {
-	struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
-	if (v->buffer != buffer)
+	struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+	if (!(v && v->buffer == buffer))
 		free((void *)buffer);
 }
 
 void free_commit_buffer(struct commit *commit)
 {
-	struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
-	free(v->buffer);
-	v->buffer = NULL;
-	v->size = 0;
+	struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
+	if (v) {
+		free(v->buffer);
+		v->buffer = NULL;
+		v->size = 0;
+	}
 }
 
 const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
 {
-	struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
+	struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
 	void *ret;
 
+	if (!v) {
+		if (sizep)
+			*sizep = 0;
+		return NULL;
+	}
 	ret = v->buffer;
 	if (sizep)
 		*sizep = v->size;
@@ -357,7 +369,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
 	return 0;
 }
 
-int parse_commit(struct commit *item)
+int parse_commit_gently(struct commit *item, int quiet_on_missing)
 {
 	enum object_type type;
 	void *buffer;
@@ -370,7 +382,8 @@ int parse_commit(struct commit *item)
 		return 0;
 	buffer = read_sha1_file(item->object.sha1, &type, &size);
 	if (!buffer)
-		return error("Could not read %s",
+		return quiet_on_missing ? -1 :
+			error("Could not read %s",
 			     sha1_to_hex(item->object.sha1));
 	if (type != OBJ_COMMIT) {
 		free(buffer);
@@ -1231,33 +1244,24 @@ free_return:
 	free(buf);
 }
 
-void check_commit_signature(const struct commit *commit, struct signature_check *sigc)
+int check_commit_signature(const struct commit *commit, struct signature_check *sigc)
 {
 	struct strbuf payload = STRBUF_INIT;
 	struct strbuf signature = STRBUF_INIT;
-	struct strbuf gpg_output = STRBUF_INIT;
-	struct strbuf gpg_status = STRBUF_INIT;
-	int status;
+	int ret = 1;
 
 	sigc->result = 'N';
 
 	if (parse_signed_commit(commit, &payload, &signature) <= 0)
 		goto out;
-	status = verify_signed_buffer(payload.buf, payload.len,
-				      signature.buf, signature.len,
-				      &gpg_output, &gpg_status);
-	if (status && !gpg_output.len)
-		goto out;
-	sigc->payload = strbuf_detach(&payload, NULL);
-	sigc->gpg_output = strbuf_detach(&gpg_output, NULL);
-	sigc->gpg_status = strbuf_detach(&gpg_status, NULL);
-	parse_gpg_output(sigc);
+	ret = check_signature(payload.buf, payload.len, signature.buf,
+		signature.len, sigc);
 
  out:
-	strbuf_release(&gpg_status);
-	strbuf_release(&gpg_output);
 	strbuf_release(&payload);
 	strbuf_release(&signature);
+
+	return ret;
 }