Fix issues found by Coverity.

[oweals/tinc.git] / src / net_socket.c

diff --git a/src/net_socket.c b/src/net_socket.c
index b889bca6a9d1ffb60edd48b399df71949d03cfee..cfcf1c39cded444cac8049c4910028e5116e2537 100644 (file)
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -87,20 +87,22 @@ static bool bind_to_interface(int sd) {
        int status;
 #endif /* defined(SOL_SOCKET) && defined(SO_BINDTODEVICE) */
 
-       if(!get_config_string (lookup_config (config_tree, "BindToInterface"), &iface))
+       if(!get_config_string(lookup_config (config_tree, "BindToInterface"), &iface))
                return true;
 
 #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
        memset(&ifr, 0, sizeof(ifr));
        strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
        ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
+       free(iface);
 
        status = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr));
        if(status) {
-               logger(LOG_ERR, "Can't bind to interface %s: %s", iface,
-                               strerror(errno));
+               logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(errno));
                return false;
        }
+
+       free(iface);
 #else /* if !defined(SOL_SOCKET) || !defined(SO_BINDTODEVICE) */
        logger(LOG_WARNING, "%s not supported on this platform", "BindToInterface");
 #endif
@@ -135,20 +137,21 @@ int setup_listen_socket(const sockaddr_t *sa) {
                setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option);
 #endif
 
-       if(get_config_string
-          (lookup_config(config_tree, "BindToInterface"), &iface)) {
+       if(get_config_string(lookup_config(config_tree, "BindToInterface"), &iface)) {
 #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
                struct ifreq ifr;
 
                memset(&ifr, 0, sizeof(ifr));
                strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
+               ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
+               free(iface);
 
                if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr))) {
                        closesocket(nfd);
-                       logger(LOG_ERR, "Can't bind to interface %s: %s", iface,
-                                  strerror(sockerrno));
+                       logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(sockerrno));
                        return -1;
                }
+
 #else
                logger(LOG_WARNING, "%s not supported on this platform", "BindToInterface");
 #endif
@@ -407,7 +410,6 @@ begin:
 
        if(!proxytype) {
                c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
-               configure_tcp(c);
        } else if(proxytype == PROXY_EXEC) {
                do_outgoing_pipe(c, proxyhost);
        } else {
@@ -416,7 +418,6 @@ begin:
                        goto begin;
                ifdebug(CONNECTIONS) logger(LOG_INFO, "Using proxy at %s port %s", proxyhost, proxyport);
                c->socket = socket(proxyai->ai_family, SOCK_STREAM, IPPROTO_TCP);
-               configure_tcp(c);
        }
 
        if(c->socket == -1) {
@@ -424,6 +425,9 @@ begin:
                goto begin;
        }
 
+       if(proxytype != PROXY_EXEC)
+               configure_tcp(c);
+
 #ifdef FD_CLOEXEC
        fcntl(c->socket, F_SETFD, FD_CLOEXEC);
 #endif