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authorDaniel Kahn Gillmor <dkg@fifthhorseman.net>2019-05-28 14:46:48 -0400
committerDaniel Kahn Gillmor <dkg@fifthhorseman.net>2019-09-15 19:07:06 -0400
commit23bcd003637f091c88f7d0a601d5fee82bc8e936 (patch)
tree7eedb8a7882ae5f85b44de15bbc5ddde00992e3c /mime-node.c
parent4b1a8fd18364a6e1f1a6e987c64aae760505999e (diff)
cli/{show,reply}: use repaired form of "Mixed Up" mangled messages
When showing or replying to a message that has been mangled in transit by an MTA in the "Mixed up" way, notmuch should instead use the repaired form of the message. Tracking the repaired GMimeObject for the lifetime of the mime_node so that it is cleaned up properly is probably the trickiest part of this patch, but the choices here are based on the idea that the mime_node_context is the memory manager for the whole mime_node tree in the first place, so new GMimeObject tree created on-the-fly during message parsing should be disposed of in the same place. Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Diffstat (limited to 'mime-node.c')
-rw-r--r--mime-node.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/mime-node.c b/mime-node.c
index 599d3b65..d4996a33 100644
--- a/mime-node.c
+++ b/mime-node.c
@@ -36,6 +36,9 @@ typedef struct mime_node_context {
GMimeMessage *mime_message;
_notmuch_message_crypto_t *msg_crypto;
+ /* repaired/unmangled parts that will need to be cleaned up */
+ GSList *repaired_parts;
+
/* Context provided by the caller. */
_notmuch_crypto_t *crypto;
} mime_node_context_t;
@@ -52,9 +55,21 @@ _mime_node_context_free (mime_node_context_t *res)
if (res->stream)
g_object_unref (res->stream);
+ if (res->repaired_parts)
+ g_slist_free_full (res->repaired_parts, g_object_unref);
+
return 0;
}
+/* keep track of objects that need to be destroyed when the mime node
+ * context goes away. */
+static void
+_mime_node_context_track_repaired_part (mime_node_context_t *ctx, GMimeObject *part)
+{
+ if (part)
+ ctx->repaired_parts = g_slist_prepend (ctx->repaired_parts, part);
+}
+
const _notmuch_message_crypto_t *
mime_node_get_message_crypto_status (mime_node_t *node)
{
@@ -298,6 +313,13 @@ _mime_node_set_up_part (mime_node_t *node, GMimeObject *part, int numchild)
node->part = part;
node->nchildren = 0;
} else if (GMIME_IS_MULTIPART (part)) {
+ GMimeObject *repaired_part = _notmuch_repair_mixed_up_mangled (part);
+ if (repaired_part) {
+ /* This was likely "Mixed Up" in transit! We replace it
+ * with the more likely-to-be-correct variant. */
+ _mime_node_context_track_repaired_part (node->ctx, repaired_part);
+ part = repaired_part;
+ }
node->part = part;
node->nchildren = g_mime_multipart_get_count (GMIME_MULTIPART (part));
} else if (GMIME_IS_MESSAGE_PART (part)) {