Doh. Don't remove things from the hash table while foreach'ing it. (And

	* providers/imap/camel-imap-message-cache.c
	(camel_imap_message_cache_clear): Doh. Don't remove things from
	the hash table while foreach'ing it. (And can't use foreach_remove
	either because we have to remove them in a weird order). Fixes
	#3618.

	* providers/imap/camel-imap-folder.c (imap_get_message): If the
	server returns OK from the FETCH BODY, but there's no parseable
	BODY response, it's probably because there's an UN-parseable BODY
	response, implying the message is badly formatted, MIMEwise. In
	that case, fall back to fetching the message as a single part.

svn path=/trunk/; revision=10748

2 files changed, 49 insertions, 23 deletions

diff --git a/camel/providers/imap/camel-imap-folder.c b/camel/providers/imap/camel-imap-folder.c
index c04c6cbb4c..4797d49b86 100644
--- a/camel/providers/imap/camel-imap-folder.c
+++ b/camel/providers/imap/camel-imap-folder.c
@@ -1423,6 +1423,26 @@ get_message (CamelImapFolder *imap_folder, const char *uid,
 #define IMAP_SMALL_BODY_SIZE 5120
 
 static CamelMimeMessage *
+get_message_simple (CamelImapFolder *imap_folder, const char *uid,
+		    CamelStream *stream, CamelException *ex)
+{
+	CamelMimeMessage *msg;
+
+	if (!stream) {
+		stream = camel_imap_folder_fetch_data (imap_folder, uid, "",
+						       FALSE, ex);
+		if (!stream)
+			return NULL;
+	}
+
+	msg = camel_mime_message_new ();
+	camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (msg),
+						  stream);
+	camel_object_unref (CAMEL_OBJECT (stream));
+	return msg;
+}
+
+static CamelMimeMessage *
 imap_get_message (CamelFolder *folder, const char *uid, CamelException *ex)
 {
 	CamelImapFolder *imap_folder = CAMEL_IMAP_FOLDER (folder);
@@ -1431,25 +1451,20 @@ imap_get_message (CamelFolder *folder, const char *uid, CamelException *ex)
 	CamelMimeMessage *msg;
 	CamelStream *stream = NULL;
 
+	/* If the server doesn't support IMAP4rev1, or we already have
+	 * the whole thing cached, fetch it in one piece.
+	 */
+	if (store->server_level < IMAP_LEVEL_IMAP4REV1 ||
+	    (stream = camel_imap_folder_fetch_data (imap_folder, uid, "", TRUE, NULL)))
+		return get_message_simple (imap_folder, uid, stream, ex);
+
 	mi = camel_folder_summary_uid (folder->summary, uid);
 	g_return_val_if_fail (mi != NULL, NULL);
 
-	/* If the message is small, or the server doesn't support
-	 * IMAP4rev1, or we already have the whole thing cached,
-	 * fetch it in one piece.
-	 */
-	if (mi->size < IMAP_SMALL_BODY_SIZE ||
-	    store->server_level < IMAP_LEVEL_IMAP4REV1 ||
-	    (stream = camel_imap_folder_fetch_data (imap_folder, uid, "", TRUE, NULL))) {
+	/* If the message is small, fetch it in one piece. */
+	if (mi->size < IMAP_SMALL_BODY_SIZE) {
 		camel_folder_summary_info_free (folder->summary, mi);
-		if (!stream)
-			stream = camel_imap_folder_fetch_data (imap_folder, uid, "", FALSE, ex);
-		if (!stream)
-			return NULL;
-		msg = camel_mime_message_new ();
-		camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (msg), stream);
-		camel_object_unref (CAMEL_OBJECT (stream));
-		return msg;
+		return get_message_simple (imap_folder, uid, NULL, ex);
 	}
 
 	/* For larger messages, fetch the structure and build a message
@@ -1492,10 +1507,14 @@ imap_get_message (CamelFolder *folder, const char *uid, CamelException *ex)
 		camel_imap_response_free (store, response);
 
 		if (!mi->content->type) {
-			camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
-					      _("Could not find message body in FETCH response."));
+			/* FETCH returned OK, but we didn't parse a BODY
+			 * response. Courier will return invalid BODY
+			 * responses for invalidly MIMEd messages, so
+			 * fall back to fetching the entire thing and
+			 * let the mailer's "bad MIME" code handle it.
+			 */
 			camel_folder_summary_info_free (folder->summary, mi);
-			return NULL;
+			return get_message_simple (imap_folder, uid, NULL, ex);
 		}
 	}
 
diff --git a/camel/providers/imap/camel-imap-message-cache.c b/camel/providers/imap/camel-imap-message-cache.c
index 2f811eea47..d4f569423c 100644
--- a/camel/providers/imap/camel-imap-message-cache.c
+++ b/camel/providers/imap/camel-imap-message-cache.c
@@ -421,12 +421,11 @@ camel_imap_message_cache_remove (CamelImapMessageCache *cache, const char *uid)
 	g_ptr_array_free (subparts, TRUE);
 }
 
-static gboolean
-clear_part (gpointer key, gpointer value, gpointer data)
+static void
+add_uids (gpointer key, gpointer value, gpointer data)
 {
 	if (!strchr (key, '.'))
-		camel_imap_message_cache_remove (data, key);
-	return TRUE;
+		g_ptr_array_add (data, key);
 }
 
 /**
@@ -438,7 +437,15 @@ clear_part (gpointer key, gpointer value, gpointer data)
 void
 camel_imap_message_cache_clear (CamelImapMessageCache *cache)
 {
-	g_hash_table_foreach_remove (cache->parts, clear_part, cache);
+	GPtrArray *uids;
+	int i;
+
+	uids = g_ptr_array_new ();
+	g_hash_table_foreach (cache->parts, add_uids, uids);
+
+	for (i = 0; i < uids->len; i++)
+		camel_imap_message_cache_remove (cache, uids->pdata[i]);
+	g_ptr_array_free (uids, TRUE);
 }