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Fix display of IP addresses (display "no IP" correctly)

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This commit is contained in:
Michael Stapelberg 2009-04-30 19:46:12 +02:00
parent f723688c35
commit 6b0c635ce8
1 changed files with 8 additions and 1 deletions
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i3status.c
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@ -360,10 +360,17 @@ static const char *get_ip_address(const char *interface) {
socklen_t len = sizeof(struct sockaddr_in);
memset(part, 0, sizeof(part));
/* First check if the interface is running */
(void)strcpy(ifr.ifr_name, interface);
if (ioctl(general_socket, SIOCGIFFLAGS, &ifr) < 0 ||
!(ifr.ifr_flags & IFF_RUNNING))
return NULL;
/* Interface is up, get the IP address */
(void)strcpy(ifr.ifr_name, interface);
ifr.ifr_addr.sa_family = AF_INET;
if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
return NULL;
return "no IP";
memcpy(&addr, &ifr.ifr_addr, len);
(void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, len);