X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=mime-node.c;h=11df082b86cd03520d17fbf5ff9ae5e547878af5;hp=851f963b7ee0e11e1a6a50d848b8f7e8a75adb4d;hb=29648a137c5807135ab168917b4a51d5e19e51c2;hpb=d487ef9e58bcd193118f19f771d5ef3984616be5

diff --git a/mime-node.c b/mime-node.c
index 851f963b..11df082b 100644
--- a/mime-node.c
+++ b/mime-node.c
@@ -14,7 +14,7 @@
  * 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/ .
+ * along with this program.  If not, see https://www.gnu.org/licenses/ .
  *
  * Authors: Carl Worth <cworth@cworth.org>
  *          Keith Packard <keithp@keithp.com>
@@ -33,7 +33,7 @@ typedef struct mime_node_context {
     GMimeMessage *mime_message;
 
     /* Context provided by the caller. */
-    notmuch_crypto_t *crypto;
+    _notmuch_crypto_t *crypto;
 } mime_node_context_t;
 
 static int
@@ -56,7 +56,7 @@ _mime_node_context_free (mime_node_context_t *res)
 
 notmuch_status_t
 mime_node_open (const void *ctx, notmuch_message_t *message,
-		notmuch_crypto_t *crypto, mime_node_t **root_out)
+		_notmuch_crypto_t *crypto, mime_node_t **root_out)
 {
     const char *filename = notmuch_message_get_filename (message);
     mime_node_context_t *mctx;
@@ -79,12 +79,32 @@ mime_node_open (const void *ctx, notmuch_message_t *message,
     }
     talloc_set_destructor (mctx, _mime_node_context_free);
 
+    /* Fast path */
     mctx->file = fopen (filename, "r");
     if (! mctx->file) {
-	fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
-	status = NOTMUCH_STATUS_FILE_ERROR;
-	goto DONE;
-    }
+	/* Slow path - for some reason the first file in the list is
+	 * not available anymore. This is clearly a problem in the
+	 * database, but we are not going to let this problem be a
+	 * show stopper */
+	notmuch_filenames_t *filenames;
+	for (filenames = notmuch_message_get_filenames (message);
+	     notmuch_filenames_valid (filenames);
+	     notmuch_filenames_move_to_next (filenames))
+	{
+	    filename = notmuch_filenames_get (filenames);
+	    mctx->file = fopen (filename, "r");
+	    if (mctx->file)
+		break;
+	}
+
+	talloc_free (filenames);
+	if (! mctx->file) {
+	    /* Give up */
+	    fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
+		status = NOTMUCH_STATUS_FILE_ERROR;
+		goto DONE;
+	    }
+	}
 
     mctx->stream = g_mime_stream_file_new (mctx->file);
     if (!mctx->stream) {
@@ -92,7 +112,7 @@ mime_node_open (const void *ctx, notmuch_message_t *message,
 	status = NOTMUCH_STATUS_OUT_OF_MEMORY;
 	goto DONE;
     }
-    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (mctx->stream), FALSE);
+    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (mctx->stream), false);
 
     mctx->parser = g_mime_parser_new_with_stream (mctx->stream);
     if (!mctx->parser) {
@@ -129,8 +149,6 @@ DONE:
     return status;
 }
 
-#ifdef GMIME_ATLEAST_26
-
 /* Signature list destructor (GMime 2.6) */
 static int
 _signature_list_free (GMimeSignatureList **proxy)
@@ -153,11 +171,11 @@ set_signature_list_destructor (mime_node_t *node)
 /* Verify a signed mime node (GMime 2.6) */
 static void
 node_verify (mime_node_t *node, GMimeObject *part,
-	     notmuch_crypto_context_t *cryptoctx)
+	     g_mime_3_unused(GMimeCryptoContext *cryptoctx))
 {
     GError *err = NULL;
 
-    node->verify_attempted = TRUE;
+    node->verify_attempted = true;
     node->sig_list = g_mime_multipart_signed_verify
 	(GMIME_MULTIPART_SIGNED (part), cryptoctx, &err);
 
@@ -174,120 +192,52 @@ node_verify (mime_node_t *node, GMimeObject *part,
 /* Decrypt and optionally verify an encrypted mime node (GMime 2.6) */
 static void
 node_decrypt_and_verify (mime_node_t *node, GMimeObject *part,
-			 notmuch_crypto_context_t *cryptoctx)
+			 g_mime_3_unused(GMimeCryptoContext *cryptoctx))
 {
     GError *err = NULL;
     GMimeDecryptResult *decrypt_result = NULL;
     GMimeMultipartEncrypted *encrypteddata = GMIME_MULTIPART_ENCRYPTED (part);
 
-    node->decrypt_attempted = TRUE;
-    node->decrypted_child = g_mime_multipart_encrypted_decrypt
-	(encrypteddata, cryptoctx, &decrypt_result, &err);
     if (! node->decrypted_child) {
-	fprintf (stderr, "Failed to decrypt part: %s\n",
-		 err ? err->message : "no error explanation given");
-	goto DONE;
-    }
-
-    node->decrypt_success = TRUE;
-    node->verify_attempted = TRUE;
-
-    /* This may be NULL if the part is not signed. */
-    node->sig_list = g_mime_decrypt_result_get_signatures (decrypt_result);
-    if (node->sig_list) {
-	g_object_ref (node->sig_list);
-	set_signature_list_destructor (node);
-    }
-    g_object_unref (decrypt_result);
-
- DONE:
-    if (err)
-	g_error_free (err);
-}
-
-#else /* GMIME_ATLEAST_26 */
-
-/* Signature validity destructor (GMime 2.4) */
-static int
-_signature_validity_free (GMimeSignatureValidity **proxy)
-{
-    g_mime_signature_validity_free (*proxy);
-    return 0;
-}
-
-/* Set up signature validity destructor (GMime 2.4) */
-static void
-set_signature_validity_destructor (mime_node_t *node)
-{
-    GMimeSignatureValidity **proxy = talloc (node, GMimeSignatureValidity *);
-    if (proxy) {
-	*proxy = node->sig_validity;
-	talloc_set_destructor (proxy, _signature_validity_free);
+	mime_node_t *parent;
+	for (parent = node; parent; parent = parent->parent)
+	    if (parent->envelope_file)
+		break;
+
+	node->decrypted_child = _notmuch_crypto_decrypt (&node->decrypt_attempted,
+							 node->ctx->crypto->decrypt,
+							 parent ? parent->envelope_file : NULL,
+							 cryptoctx, encrypteddata, &decrypt_result, &err);
     }
-}
-
-/* Verify a signed mime node (GMime 2.4) */
-static void
-node_verify (mime_node_t *node, GMimeObject *part,
-	     notmuch_crypto_context_t *cryptoctx)
-{
-    GError *err = NULL;
-
-    node->verify_attempted = TRUE;
-    node->sig_validity = g_mime_multipart_signed_verify
-	(GMIME_MULTIPART_SIGNED (part), cryptoctx, &err);
-    if (node->sig_validity) {
-	set_signature_validity_destructor (node);
-    } else {
-	fprintf (stderr, "Failed to verify signed part: %s\n",
-		 err ? err->message : "no error explanation given");
-    }
-
-    if (err)
-	g_error_free (err);
-}
-
-/* Decrypt and optionally verify an encrypted mime node (GMime 2.4) */
-static void
-node_decrypt_and_verify (mime_node_t *node, GMimeObject *part,
-			 notmuch_crypto_context_t *cryptoctx)
-{
-    GError *err = NULL;
-    GMimeMultipartEncrypted *encrypteddata = GMIME_MULTIPART_ENCRYPTED (part);
-
-    node->decrypt_attempted = TRUE;
-    node->decrypted_child = g_mime_multipart_encrypted_decrypt
-	(encrypteddata, cryptoctx, &err);
     if (! node->decrypted_child) {
 	fprintf (stderr, "Failed to decrypt part: %s\n",
 		 err ? err->message : "no error explanation given");
 	goto DONE;
     }
 
-    node->decrypt_success = TRUE;
-    node->verify_attempted = TRUE;
+    node->decrypt_success = true;
+    node->verify_attempted = true;
 
-    /* The GMimeSignatureValidity returned here is a const, unlike the
-     * one returned by g_mime_multipart_signed_verify() in
-     * node_verify() above, so the destructor is not needed.
-     */
-    node->sig_validity = g_mime_multipart_encrypted_get_signature_validity (encrypteddata);
-    if (! node->sig_validity)
-	fprintf (stderr, "Failed to verify encrypted signed part: %s\n",
-		 err ? err->message : "no error explanation given");
+    if (decrypt_result) {
+	/* This may be NULL if the part is not signed. */
+	node->sig_list = g_mime_decrypt_result_get_signatures (decrypt_result);
+	if (node->sig_list) {
+	    g_object_ref (node->sig_list);
+	    set_signature_list_destructor (node);
+	}
+	g_object_unref (decrypt_result);
+    }
 
  DONE:
     if (err)
 	g_error_free (err);
 }
 
-#endif  /* GMIME_ATLEAST_26 */
-
 static mime_node_t *
 _mime_node_create (mime_node_t *parent, GMimeObject *part)
 {
     mime_node_t *node = talloc_zero (parent, mime_node_t);
-    notmuch_crypto_context_t *cryptoctx = NULL;
+    GMimeCryptoContext *cryptoctx = NULL;
 
     /* Set basic node properties */
     node->part = part;
@@ -320,15 +270,24 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part)
 	return NULL;
     }
 
-    if ((GMIME_IS_MULTIPART_ENCRYPTED (part) && node->ctx->crypto->decrypt)
+#if (GMIME_MAJOR_VERSION < 3)
+    if ((GMIME_IS_MULTIPART_ENCRYPTED (part) && (node->ctx->crypto->decrypt != NOTMUCH_DECRYPT_FALSE))
 	|| (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify)) {
 	GMimeContentType *content_type = g_mime_object_get_content_type (part);
 	const char *protocol = g_mime_content_type_get_parameter (content_type, "protocol");
-	cryptoctx = notmuch_crypto_get_context (node->ctx->crypto, protocol);
+	notmuch_status_t status;
+	status = _notmuch_crypto_get_gmime_ctx_for_protocol (node->ctx->crypto,
+							     protocol, &cryptoctx);
+	if (status) /* this is a warning, not an error */
+	    fprintf (stderr, "Warning: %s (%s).\n", notmuch_status_to_string (status),
+		     protocol ? protocol : "NULL");
+	if (!cryptoctx)
+	    return node;
     }
+#endif
 
     /* Handle PGP/MIME parts */
-    if (GMIME_IS_MULTIPART_ENCRYPTED (part) && node->ctx->crypto->decrypt && cryptoctx) {
+    if (GMIME_IS_MULTIPART_ENCRYPTED (part) && (node->ctx->crypto->decrypt != NOTMUCH_DECRYPT_FALSE)) {
 	if (node->nchildren != 2) {
 	    /* this violates RFC 3156 section 4, so we won't bother with it. */
 	    fprintf (stderr, "Error: %d part(s) for a multipart/encrypted "
@@ -337,7 +296,7 @@ _mime_node_create (mime_node_t *parent, GMimeObject *part)
 	} else {
 	    node_decrypt_and_verify (node, part, cryptoctx);
 	}
-    } else if (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify && cryptoctx) {
+    } else if (GMIME_IS_MULTIPART_SIGNED (part) && node->ctx->crypto->verify) {
 	if (node->nchildren != 2) {
 	    /* this violates RFC 3156 section 5, so we won't bother with it. */
 	    fprintf (stderr, "Error: %d part(s) for a multipart/signed message "
@@ -402,20 +361,21 @@ mime_node_child (mime_node_t *parent, int child)
 static mime_node_t *
 _mime_node_seek_dfs_walk (mime_node_t *node, int *n)
 {
-    mime_node_t *ret = NULL;
     int i;
 
     if (*n == 0)
 	return node;
 
     *n -= 1;
-    for (i = 0; i < node->nchildren && !ret; i++) {
+    for (i = 0; i < node->nchildren; i++) {
 	mime_node_t *child = mime_node_child (node, i);
-	ret = _mime_node_seek_dfs_walk (child, n);
-	if (!ret)
-	    talloc_free (child);
+	mime_node_t *ret = _mime_node_seek_dfs_walk (child, n);
+	if (ret)
+	    return ret;
+
+	talloc_free (child);
     }
-    return ret;
+    return NULL;
 }
 
 mime_node_t *