Merge branch 'bc/signed-objects-with-both-hashes'

Signed commits and tags now allow verification of objects, whose
two object names (one in SHA-1, the other in SHA-256) are both
signed.

* bc/signed-objects-with-both-hashes:
  gpg-interface: remove other signature headers before verifying
  ref-filter: hoist signature parsing
  commit: allow parsing arbitrary buffers with headers
  gpg-interface: improve interface for parsing tags
  commit: ignore additional signatures when parsing signed commits
  ref-filter: switch some uses of unsigned long to size_t

1 files changed, 8 insertions, 1 deletions

diff --git a/gpg-interface.h b/gpg-interface.h
index f4e9b4f371..80567e4894 100644
--- a/gpg-interface.h
+++ b/gpg-interface.h
@@ -38,12 +38,19 @@ struct signature_check {
 void signature_check_clear(struct signature_check *sigc);
 
 /*
+ * Look at a GPG signed tag object.  If such a signature exists, store it in
+ * signature and the signed content in payload.  Return 1 if a signature was
+ * found, and 0 otherwise.
+ */
+int parse_signature(const char *buf, size_t size, struct strbuf *payload, struct strbuf *signature);
+
+/*
  * Look at GPG signed content (e.g. a signed tag object), whose
  * payload is followed by a detached signature on it.  Return the
  * offset where the embedded detached signature begins, or the end of
  * the data when there is no such signature.
  */
-size_t parse_signature(const char *buf, size_t size);
+size_t parse_signed_buffer(const char *buf, size_t size);
 
 /*
  * Create a detached signature for the contents of "buffer" and append