mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-22 02:48:08 +01:00
3e9857a0b9
notmuch_crypto_context_t was introduced (i think) as some sort of abstraction layer to make notmuch somewhat independent of GMime. But it isn't even useful for GMime 3.0 or later -- we can drop the pretense that it's some sort of abstraction in this case, and just call it what it is, GMimeCryptoContext, which is useful for building against older versions of GMime. This also renames _notmuch_crypto_get_context() to _notmuch_crypto_get_gmime_context().
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* notmuch - Not much of an email program, (just index and search)
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*
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* Copyright © 2012 Jameson Rollins
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/ .
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*
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* Authors: Jameson Rollins <jrollins@finestructure.net>
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*/
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#include "notmuch-client.h"
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#if (GMIME_MAJOR_VERSION < 3)
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/* Create a GPG context (GMime 2.6) */
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static GMimeCryptoContext *
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create_gpg_context (_notmuch_crypto_t *crypto)
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{
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GMimeCryptoContext *gpgctx;
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if (crypto->gpgctx)
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return crypto->gpgctx;
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/* TODO: GMimePasswordRequestFunc */
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gpgctx = g_mime_gpg_context_new (NULL, crypto->gpgpath ? crypto->gpgpath : "gpg");
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if (! gpgctx) {
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fprintf (stderr, "Failed to construct gpg context.\n");
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return NULL;
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}
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crypto->gpgctx = gpgctx;
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g_mime_gpg_context_set_use_agent ((GMimeGpgContext *) gpgctx, true);
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g_mime_gpg_context_set_always_trust ((GMimeGpgContext *) gpgctx, false);
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return gpgctx;
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}
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/* Create a PKCS7 context (GMime 2.6) */
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static GMimeCryptoContext *
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create_pkcs7_context (_notmuch_crypto_t *crypto)
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{
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GMimeCryptoContext *pkcs7ctx;
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if (crypto->pkcs7ctx)
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return crypto->pkcs7ctx;
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/* TODO: GMimePasswordRequestFunc */
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pkcs7ctx = g_mime_pkcs7_context_new (NULL);
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if (! pkcs7ctx) {
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fprintf (stderr, "Failed to construct pkcs7 context.\n");
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return NULL;
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}
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crypto->pkcs7ctx = pkcs7ctx;
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g_mime_pkcs7_context_set_always_trust ((GMimePkcs7Context *) pkcs7ctx,
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false);
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return pkcs7ctx;
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}
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static const struct {
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const char *protocol;
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GMimeCryptoContext *(*get_context) (_notmuch_crypto_t *crypto);
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} protocols[] = {
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{
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.protocol = "application/pgp-signature",
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.get_context = create_gpg_context,
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},
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{
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.protocol = "application/pgp-encrypted",
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.get_context = create_gpg_context,
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},
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{
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.protocol = "application/pkcs7-signature",
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.get_context = create_pkcs7_context,
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},
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{
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.protocol = "application/x-pkcs7-signature",
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.get_context = create_pkcs7_context,
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},
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};
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/* for the specified protocol return the context pointer (initializing
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* if needed) */
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GMimeCryptoContext *
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_notmuch_crypto_get_gmime_context (_notmuch_crypto_t *crypto, const char *protocol)
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{
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GMimeCryptoContext *cryptoctx = NULL;
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size_t i;
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if (! protocol) {
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fprintf (stderr, "Cryptographic protocol is empty.\n");
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return cryptoctx;
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}
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/* As per RFC 1847 section 2.1: "the [protocol] value token is
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* comprised of the type and sub-type tokens of the Content-Type".
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* As per RFC 1521 section 2: "Content-Type values, subtypes, and
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* parameter names as defined in this document are
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* case-insensitive." Thus, we use strcasecmp for the protocol.
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*/
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for (i = 0; i < ARRAY_SIZE (protocols); i++) {
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if (strcasecmp (protocol, protocols[i].protocol) == 0)
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return protocols[i].get_context (crypto);
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}
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fprintf (stderr, "Unknown or unsupported cryptographic protocol %s.\n",
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protocol);
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return NULL;
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}
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int
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_notmuch_crypto_cleanup (_notmuch_crypto_t *crypto)
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{
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if (crypto->gpgctx) {
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g_object_unref (crypto->gpgctx);
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crypto->gpgctx = NULL;
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}
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if (crypto->pkcs7ctx) {
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g_object_unref (crypto->pkcs7ctx);
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crypto->pkcs7ctx = NULL;
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}
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return 0;
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}
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#else
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int _notmuch_crypto_cleanup (unused(_notmuch_crypto_t *crypto))
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{
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return 0;
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}
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#endif
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