gdhcp: Move get_interface_name and interface_is_up to common.c

[framework/connectivity/connman.git] / gdhcp / common.c

diff --git a/gdhcp/common.c b/gdhcp/common.c
index fc95881..00817af 100644 (file)
--- a/gdhcp/common.c
+++ b/gdhcp/common.c
@@ -22,11 +22,15 @@
 #include <config.h>
 #endif
 
+#include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
+#include <sys/ioctl.h>
 #include <stdint.h>
 #include <string.h>
 #include <endian.h>
+#include <net/if_arp.h>
+#include <linux/if.h>
 #include <netpacket/packet.h>
 #include <net/ethernet.h>
 
@@ -417,3 +421,68 @@ int dhcp_l3_socket(int port, const char *interface)
 
        return fd;
 }
+
+char *get_interface_name(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (index < 0)
+               return NULL;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               perror("Open socket error");
+               return NULL;
+       }
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+       if (err < 0) {
+               perror("Get interface name error");
+               close(sk);
+               return NULL;
+       }
+
+       close(sk);
+
+       return g_strdup(ifr.ifr_name);
+}
+
+gboolean interface_is_up(int index)
+{
+       int sk, err;
+       struct ifreq ifr;
+       gboolean ret = FALSE;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               perror("Open socket error");
+               return FALSE;
+       }
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+       if (err < 0) {
+               perror("Get interface name error");
+               goto done;
+       }
+
+       err = ioctl(sk, SIOCGIFFLAGS, &ifr);
+       if (err < 0) {
+               perror("Get interface flags error");
+               goto done;
+       }
+
+       if (ifr.ifr_flags & IFF_UP)
+               ret = TRUE;
+
+done:
+       close(sk);
+
+       return ret;
+}