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gpg: Use just the addrspec from the Signer's UID.

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* g10/parse-packet.c (parse_signature): Take only rthe addrspec from a
Signer's UID subpacket.
--

This is to address a problem in the currentr OpenKeychain which put
the entire UID into the subpacket.  For example our Tofu code can only
use the addrspec and not the entire UID.

Reported-by: Wiktor Kwapisiewicz <wiktor@metacode.biz>
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-05-03 10:53:34 +02:00
parent 5ed2275892
commit bd6ecbb8f8
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 9 additions and 0 deletions
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9
g10/parse-packet.c
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@ -35,6 +35,7 @@
#include "main.h"
#include "../common/i18n.h"
#include "../common/host2net.h"
#include "../common/mbox-util.h"
/* Maximum length of packets to avoid excessive memory allocation. */
@ -2118,12 +2119,20 @@ parse_signature (IOBUF inp, int pkttype, unsigned long pktlen,
p = parse_sig_subpkt (sig->hashed, SIGSUBPKT_SIGNERS_UID, &len);
if (p && len)
{
char *mbox;
sig->signers_uid = try_make_printable_string (p, len, 0);
if (!sig->signers_uid)
{
rc = gpg_error_from_syserror ();
goto leave;
}
mbox = mailbox_from_userid (sig->signers_uid, 0);
if (mbox)
{
xfree (sig->signers_uid);
sig->signers_uid = mbox;
}
}
p = parse_sig_subpkt (sig->hashed, SIGSUBPKT_NOTATION, NULL);