GMimeObject *
_notmuch_crypto_decrypt (bool *attempted,
notmuch_decryption_policy_t decrypt,
notmuch_message_t *message,
GMimeMultipartEncrypted *part,
GMimeDecryptResult **decrypt_result,
GError **err)
{
GMimeObject *ret = NULL;
if (decrypt == NOTMUCH_DECRYPT_FALSE)
return NULL;
/* try decryption with session key if one is stashed */
if (message) {
notmuch_message_properties_t *list = NULL;
for (list = notmuch_message_get_properties (message, "session-key", TRUE);
notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) {
if (err && *err) {
g_error_free (*err);
*err = NULL;
}
if (attempted)
*attempted = true;
ret = g_mime_multipart_encrypted_decrypt (part,
GMIME_DECRYPT_NONE,
notmuch_message_properties_value (list),
decrypt_result, err);
if (ret)
break;
}
if (list)
notmuch_message_properties_destroy (list);
if (ret)
return ret;
}
if (err && *err) {
g_error_free (*err);
*err = NULL;
}
if (decrypt == NOTMUCH_DECRYPT_AUTO)
return ret;
if (attempted)
*attempted = true;
GMimeDecryptFlags flags = GMIME_DECRYPT_NONE;
if (decrypt == NOTMUCH_DECRYPT_TRUE && decrypt_result)
flags |= GMIME_DECRYPT_EXPORT_SESSION_KEY;
ret = g_mime_multipart_encrypted_decrypt(part, flags, NULL,
decrypt_result, err);
return ret;
}
GMimeObject* /* this is declared in mu-msg-priv.h */
mu_msg_crypto_decrypt_part (GMimeMultipartEncrypted *enc, MuMsgOptions opts,
MuMsgPartPasswordFunc func, gpointer user_data,
GError **err)
{
GMimeObject *dec;
GMimeCryptoContext *ctx;
g_return_val_if_fail (GMIME_IS_MULTIPART_ENCRYPTED(enc), NULL);
ctx = get_crypto_context (opts, func, user_data, err);
if (!ctx) {
mu_util_g_set_error (err, MU_ERROR_CRYPTO,
"failed to get crypto context");
return NULL;
}
dec = g_mime_multipart_encrypted_decrypt (enc, ctx, NULL, err);
g_object_unref (ctx);
if (!dec) {
if (err && !*err)
mu_util_g_set_error (err, MU_ERROR_CRYPTO,
"decryption failed");
return NULL;
}
return dec;
}
GMimeObject* /* this is declared in mu-msg-priv.h */
mu_msg_crypto_decrypt_part (GMimeMultipartEncrypted *enc, MuMsgOptions opts,
MuMsgPartPasswordFunc func, gpointer user_data,
GError **err)
{
GMimeObject *dec;
GMimeCryptoContext *ctx;
GMimeDecryptResult *res;
g_return_val_if_fail (GMIME_IS_MULTIPART_ENCRYPTED(enc), NULL);
ctx = get_crypto_context (opts, func, user_data, err);
if (!ctx) {
mu_util_g_set_error (err, MU_ERROR_CRYPTO,
"failed to get crypto context");
return NULL;
}
/* at the time of writing, there is a small leak in
* g_mime_multipart_encrypted_decrypt; I've notified its
* author and it has been fixed 2012-09-12:
* http://git.gnome.org/browse/gmime/commit/
* ?id=1bacd43b50d91bd03a4ae1dc9f46f5783dee61b1
* (or GMime > 2.6.10)
* */
res = NULL;
dec = g_mime_multipart_encrypted_decrypt (enc, ctx, &res, err);
g_object_unref (ctx);
/* we don't use the 3rd param 'res' * (GMimeDecryptResult),
* but we must unref it. */
if (res)
g_object_unref (res);
if (!dec) {
if (err && !*err)
mu_util_g_set_error (err, MU_ERROR_CRYPTO,
"decryption failed");
return NULL;
}
return dec;
}