From: Ted Phelps <phelps@gnusto.com>
Date: Sat, 2 Sep 2023 07:50:55 +0000 (+1000)
Subject: dsync: Fix an infinite loop
X-Git-Tag: 2.3.21~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6901e5fc1cf01f6a1d46a75339cb7208ee712d55;p=thirdparty%2Fdovecot%2Fcore.git

dsync: Fix an infinite loop

Be sure to update 'name' when traversing the components of a path
in convert_name_to_remote_sep.  Otherwise we end up allocating a
lot of memory and failing.
---

diff --git a/src/doveadm/dsync/dsync-mailbox-tree.c b/src/doveadm/dsync/dsync-mailbox-tree.c
index 941ddbb221..baf0fb86ff 100644
--- a/src/doveadm/dsync/dsync-mailbox-tree.c
+++ b/src/doveadm/dsync/dsync-mailbox-tree.c
@@ -268,6 +268,7 @@ convert_name_to_remote_sep(struct dsync_mailbox_tree *tree, const char *name)
 		const char *end = strchr(name, tree->sep);
 		const char *name_part = end == NULL ? name :
 			t_strdup_until(name, end++);
+		name = end;
 
 		if (tree->escape_char != '\0')
 			mailbox_list_name_unescape(&name_part, tree->escape_char);