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gpg-interface: improve interface for parsing tags

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We have a function which parses a buffer with a signature at the end,
parse_signature, and this function is used for signed tags.  However,
we'll need to store values for multiple algorithms, and we'll do this by
using a header for the non-default algorithm.

Adjust the parse_signature interface to store the parsed data in two
strbufs and turn the existing function into parse_signed_buffer.  The
latter is still used in places where we know we always have a signed
buffer, such as push certs.

Adjust all the callers to deal with this new interface.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson
2021-02-11 02:08:03 +00:00
committed by Junio C Hamano
parent 1fb5cf0da6
commit 482c119186
9 changed files with 87 additions and 39 deletions
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9
commit.c
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@ -1136,8 +1136,10 @@ static void handle_signed_tag(struct commit *parent, struct commit_extra_header
struct merge_remote_desc *desc;
struct commit_extra_header *mergetag;
char *buf;
unsigned long size, len;
unsigned long size;
enum object_type type;
struct strbuf payload = STRBUF_INIT;
struct strbuf signature = STRBUF_INIT;
desc = merge_remote_util(parent);
if (!desc || !desc->obj)
@ -1145,8 +1147,7 @@ static void handle_signed_tag(struct commit *parent, struct commit_extra_header
buf = read_object_file(&desc->obj->oid, &type, &size);
if (!buf || type != OBJ_TAG)
goto free_return;
len = parse_signature(buf, size);
if (size == len)
if (!parse_signature(buf, size, &payload, &signature))
goto free_return;
/*
* We could verify this signature and either omit the tag when
@ -1165,6 +1166,8 @@ static void handle_signed_tag(struct commit *parent, struct commit_extra_header
**tail = mergetag;
*tail = &mergetag->next;
strbuf_release(&payload);
strbuf_release(&signature);
return;
free_return: