dnsproxy: Fix wrong domain len causing crash in memmove

[framework/connectivity/connman.git] / src / dnsproxy.c

diff --git a/src/dnsproxy.c b/src/dnsproxy.c
index 6a9b138..5c4099b 100644 (file)
--- a/src/dnsproxy.c
+++ b/src/dnsproxy.c
@@ -1551,13 +1551,13 @@ static int forward_dns_reply(unsigned char *reply, int reply_len, int protocol,
                         */
                        ptr = reply + offset + sizeof(struct domain_hdr);
                        host_len = *ptr;
-                       domain_len = strlen((const char *)ptr) - host_len - 1;
+                       domain_len = strlen((const char *)ptr + host_len + 1);
 
                        /*
-                        * remove the domain name and replaced it by the end
+                        * remove the domain name and replace it by the end
                         * of reply.
                         */
-                       memmove(ptr + host_len + 1,
+                       memcpy(ptr + host_len + 1,
                                ptr + host_len + domain_len + 1,
                                reply_len - (ptr - reply + domain_len));