Add MacOS support to tun.c

diff --git a/tun.c b/tun.c
index 3d06a36..437404f 100644 (file)
--- a/tun.c
+++ b/tun.c
@@ -22,9 +22,12 @@
  */
 
 #include <string.h>
+#include <sys/socket.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
+#ifndef __APPLE__
 #include <linux/if_tun.h>
+#endif
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -177,6 +180,22 @@ int setup_tun(struct openconnect_info *vpninfo)
                vpninfo->script_tun = child;
                vpninfo->ifname = "(script)";
        } else {
+#ifdef __APPLE__
+               static char tun_name[80];
+               int i;
+               for (i=0; i < 255; i++) {
+                       sprintf(tun_name, "/dev/tun%d", i);
+                       tun_fd = open(tun_name, O_RDWR);
+                       if (tun_fd >= 0)
+                               break;
+               }
+               if (tun_fd < 0) {
+                       perror("open tun");
+                       exit(1);
+               }
+               vpninfo->ifname = tun_name + 5;
+#else
+
                tun_fd = open("/dev/net/tun", O_RDWR);
                if (tun_fd < 0) {
                        perror("open tun");
@@ -194,6 +213,7 @@ int setup_tun(struct openconnect_info *vpninfo)
                if (!vpninfo->ifname)
                        vpninfo->ifname = strdup(ifr.ifr_name);
 
+#endif
                if (vpninfo->vpnc_script) {
                        script_config_tun(vpninfo);
                        /* We have to set the MTU for ourselves, because the script doesn't */