Merge pull request #275 from winks/patch-2

Fix NULL value on OpenBSD when there is no acpitz0

diff --git a/src/print_ip_addr.c b/src/print_ip_addr.c
index f9cd1f48bd1535949abb66f8d45658217543f39c..c955c1cea0cfa84a0671148e10bca046c4d26a65 100644 (file)
--- a/src/print_ip_addr.c
+++ b/src/print_ip_addr.c
@@ -29,6 +29,7 @@ const char *get_ip_addr(const char *interface, int family) {
 
     struct ifaddrs *ifaddr, *addrp;
     bool found = false;
+    int interface_len = strlen(interface);
 
     getifaddrs(&ifaddr);
 
@@ -39,13 +40,13 @@ const char *get_ip_addr(const char *interface, int family) {
     for (addrp = ifaddr;
 
          (addrp != NULL &&
-          (strcmp(addrp->ifa_name, interface) != 0 ||
+          (strncmp(addrp->ifa_name, interface, interface_len) != 0 ||
            addrp->ifa_addr == NULL ||
            addrp->ifa_addr->sa_family != family));
 
          addrp = addrp->ifa_next) {
         /* Check if the interface is down */
-        if (strcmp(addrp->ifa_name, interface) != 0)
+        if (strncmp(addrp->ifa_name, interface, interface_len) != 0)
             continue;
         found = true;
         if ((addrp->ifa_flags & IFF_RUNNING) == 0) {