mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-24 20:08:10 +01:00
348437243c
Badly formed messages that don't specify a protocol in signed/encrypted parts, end up with a protocol of NULL. strcasecmp in notmuch_crypto_get_context then segfaults when trying to check it against known protocols. If the protocol is NULL, just return an empty context immediately (with appropriate message.)
107 lines
3 KiB
C
107 lines
3 KiB
C
/* notmuch - Not much of an email program, (just index and search)
|
|
*
|
|
* Copyright © 2012 Jameson Rollins
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see http://www.gnu.org/licenses/ .
|
|
*
|
|
* Authors: Jameson Rollins <jrollins@finestructure.net>
|
|
*/
|
|
|
|
#include "notmuch-client.h"
|
|
|
|
#ifdef GMIME_ATLEAST_26
|
|
|
|
/* Create a GPG context (GMime 2.6) */
|
|
static notmuch_crypto_context_t *
|
|
create_gpg_context (void)
|
|
{
|
|
notmuch_crypto_context_t *gpgctx;
|
|
|
|
/* TODO: GMimePasswordRequestFunc */
|
|
gpgctx = g_mime_gpg_context_new (NULL, "gpg");
|
|
if (! gpgctx)
|
|
return NULL;
|
|
|
|
g_mime_gpg_context_set_use_agent ((GMimeGpgContext *) gpgctx, TRUE);
|
|
g_mime_gpg_context_set_always_trust ((GMimeGpgContext *) gpgctx, FALSE);
|
|
|
|
return gpgctx;
|
|
}
|
|
|
|
#else /* GMIME_ATLEAST_26 */
|
|
|
|
/* Create a GPG context (GMime 2.4) */
|
|
static notmuch_crypto_context_t *
|
|
create_gpg_context (void)
|
|
{
|
|
GMimeSession *session;
|
|
notmuch_crypto_context_t *gpgctx;
|
|
|
|
session = g_object_new (g_mime_session_get_type (), NULL);
|
|
gpgctx = g_mime_gpg_context_new (session, "gpg");
|
|
g_object_unref (session);
|
|
|
|
if (! gpgctx)
|
|
return NULL;
|
|
|
|
g_mime_gpg_context_set_always_trust ((GMimeGpgContext *) gpgctx, FALSE);
|
|
|
|
return gpgctx;
|
|
}
|
|
|
|
#endif /* GMIME_ATLEAST_26 */
|
|
|
|
/* for the specified protocol return the context pointer (initializing
|
|
* if needed) */
|
|
notmuch_crypto_context_t *
|
|
notmuch_crypto_get_context (notmuch_crypto_t *crypto, const char *protocol)
|
|
{
|
|
notmuch_crypto_context_t *cryptoctx = NULL;
|
|
|
|
if (! protocol) {
|
|
fprintf (stderr, "Cryptographic protocol is empty.\n");
|
|
return cryptoctx;
|
|
}
|
|
|
|
/* As per RFC 1847 section 2.1: "the [protocol] value token is
|
|
* comprised of the type and sub-type tokens of the Content-Type".
|
|
* As per RFC 1521 section 2: "Content-Type values, subtypes, and
|
|
* parameter names as defined in this document are
|
|
* case-insensitive." Thus, we use strcasecmp for the protocol.
|
|
*/
|
|
if (strcasecmp (protocol, "application/pgp-signature") == 0 ||
|
|
strcasecmp (protocol, "application/pgp-encrypted") == 0) {
|
|
if (! crypto->gpgctx) {
|
|
crypto->gpgctx = create_gpg_context ();
|
|
if (! crypto->gpgctx)
|
|
fprintf (stderr, "Failed to construct gpg context.\n");
|
|
}
|
|
cryptoctx = crypto->gpgctx;
|
|
} else {
|
|
fprintf (stderr, "Unknown or unsupported cryptographic protocol.\n");
|
|
}
|
|
|
|
return cryptoctx;
|
|
}
|
|
|
|
int
|
|
notmuch_crypto_cleanup (notmuch_crypto_t *crypto)
|
|
{
|
|
if (crypto->gpgctx) {
|
|
g_object_unref (crypto->gpgctx);
|
|
crypto->gpgctx = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|