cli sockets: check for a digit prior using atoi

diff --git a/src/socket.c b/src/socket.c
index f662c558e2218a7996c54af5755bcec38cda3e1e..7ed9c3afac634cd0fc6b36dd7c2a4827cd269756 100644 (file)
--- a/src/socket.c
+++ b/src/socket.c
@@ -362,6 +362,9 @@ const char *port_to_service(const char *sport, const char *proto)
        unsigned int port;
        struct servent *sr;
 
+       if (!c_isdigit(sport[0]))
+               return sport;
+
        port = atoi(sport);
        if (port == 0)
                return sport;
@@ -371,7 +374,7 @@ const char *port_to_service(const char *sport, const char *proto)
        sr = getservbyport(port, proto);
        if (sr == NULL) {
                fprintf(stderr,
-                       "Warning: getservbyport() failed. Using port number as service.\n");
+                       "Warning: getservbyport(%s) failed. Using port number as service.\n", sport);
                return sport;
        }