mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-21 18:38:08 +01:00
142 lines
3.9 KiB
C
142 lines
3.9 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 https://www.gnu.org/licenses/ .
|
|
*
|
|
* Authors: Jameson Rollins <jrollins@finestructure.net>
|
|
*/
|
|
|
|
#include "crypto.h"
|
|
#include <strings.h>
|
|
#define unused(x) x __attribute__ ((unused))
|
|
|
|
#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))
|
|
|
|
#if (GMIME_MAJOR_VERSION < 3)
|
|
/* Create a GPG context (GMime 2.6) */
|
|
static GMimeCryptoContext *
|
|
create_gpg_context (_notmuch_crypto_t *crypto)
|
|
{
|
|
GMimeCryptoContext *gpgctx;
|
|
|
|
if (crypto->gpgctx)
|
|
return crypto->gpgctx;
|
|
|
|
/* TODO: GMimePasswordRequestFunc */
|
|
gpgctx = g_mime_gpg_context_new (NULL, crypto->gpgpath ? crypto->gpgpath : "gpg");
|
|
if (! gpgctx) {
|
|
fprintf (stderr, "Failed to construct gpg context.\n");
|
|
return NULL;
|
|
}
|
|
crypto->gpgctx = gpgctx;
|
|
|
|
g_mime_gpg_context_set_use_agent ((GMimeGpgContext *) gpgctx, true);
|
|
g_mime_gpg_context_set_always_trust ((GMimeGpgContext *) gpgctx, false);
|
|
|
|
return gpgctx;
|
|
}
|
|
|
|
/* Create a PKCS7 context (GMime 2.6) */
|
|
static GMimeCryptoContext *
|
|
create_pkcs7_context (_notmuch_crypto_t *crypto)
|
|
{
|
|
GMimeCryptoContext *pkcs7ctx;
|
|
|
|
if (crypto->pkcs7ctx)
|
|
return crypto->pkcs7ctx;
|
|
|
|
/* TODO: GMimePasswordRequestFunc */
|
|
pkcs7ctx = g_mime_pkcs7_context_new (NULL);
|
|
if (! pkcs7ctx) {
|
|
fprintf (stderr, "Failed to construct pkcs7 context.\n");
|
|
return NULL;
|
|
}
|
|
crypto->pkcs7ctx = pkcs7ctx;
|
|
|
|
g_mime_pkcs7_context_set_always_trust ((GMimePkcs7Context *) pkcs7ctx,
|
|
false);
|
|
|
|
return pkcs7ctx;
|
|
}
|
|
static const struct {
|
|
const char *protocol;
|
|
GMimeCryptoContext *(*get_context) (_notmuch_crypto_t *crypto);
|
|
} protocols[] = {
|
|
{
|
|
.protocol = "application/pgp-signature",
|
|
.get_context = create_gpg_context,
|
|
},
|
|
{
|
|
.protocol = "application/pgp-encrypted",
|
|
.get_context = create_gpg_context,
|
|
},
|
|
{
|
|
.protocol = "application/pkcs7-signature",
|
|
.get_context = create_pkcs7_context,
|
|
},
|
|
{
|
|
.protocol = "application/x-pkcs7-signature",
|
|
.get_context = create_pkcs7_context,
|
|
},
|
|
};
|
|
|
|
/* for the specified protocol return the context pointer (initializing
|
|
* if needed) */
|
|
GMimeCryptoContext *
|
|
_notmuch_crypto_get_gmime_context (_notmuch_crypto_t *crypto, const char *protocol)
|
|
{
|
|
GMimeCryptoContext *cryptoctx = NULL;
|
|
size_t i;
|
|
|
|
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.
|
|
*/
|
|
for (i = 0; i < ARRAY_SIZE (protocols); i++) {
|
|
if (strcasecmp (protocol, protocols[i].protocol) == 0)
|
|
return protocols[i].get_context (crypto);
|
|
}
|
|
|
|
fprintf (stderr, "Unknown or unsupported cryptographic protocol %s.\n",
|
|
protocol);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
_notmuch_crypto_cleanup (_notmuch_crypto_t *crypto)
|
|
{
|
|
if (crypto->gpgctx) {
|
|
g_object_unref (crypto->gpgctx);
|
|
crypto->gpgctx = NULL;
|
|
}
|
|
|
|
if (crypto->pkcs7ctx) {
|
|
g_object_unref (crypto->pkcs7ctx);
|
|
crypto->pkcs7ctx = NULL;
|
|
}
|
|
}
|
|
#else
|
|
void _notmuch_crypto_cleanup (unused(_notmuch_crypto_t *crypto))
|
|
{
|
|
}
|
|
#endif
|