irmd: Fix wrong hash length when getting ipcpd

The get_ipcpd_by_dst function was returning the hash length of the
last IPCP in the list instead of the length of the actual hash.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/irmd/ipcp.c b/src/irmd/ipcp.c
index d7abe15d..5a9a79d3 100644
--- a/src/irmd/ipcp.c
+++ b/src/irmd/ipcp.c
@@ -107,7 +107,8 @@ ipcp_msg_t * send_recv_ipcp_msg(pid_t        pid,
         free(sock_path);
 
         len = ipcp_msg__get_packed_size(msg);
-        if (len == 0) {
+        if (len == 0 || len >= SOCK_BUF_SIZE) {
+                log_warn("IPCP message has invalid size: %zd.", len);
                 close(sockfd);
                 return NULL;
         }