Fixing P151224-03183, Redirect the DNS queries to VPN interface #2

[platform/core/api/vpn-service.git] / daemon / src / vpn_service_daemon.c

diff --git a/daemon/src/vpn_service_daemon.c b/daemon/src/vpn_service_daemon.c
index 00ea4e2..f4f82b9 100755 (executable)
--- a/daemon/src/vpn_service_daemon.c
+++ b/daemon/src/vpn_service_daemon.c
@@ -140,6 +140,56 @@ static int add_routes(char* iface_name, char* routes[], int prefix[], size_t nr_
        return VPNSVC_ERROR_NONE;
 }
 
+static int add_dns_routes(char* if_name, char** dns_servers, size_t nr_dns)
+{
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk;
+       unsigned int i = 0;
+
+       LOGD("Enter add_routes");
+
+       sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+       if (sk < 0) {
+               LOGE("socket failed : %s", strerror(errno));
+               return VPNSVC_ERROR_IO_ERROR;
+       }
+
+       for (i = 0; i < nr_dns; i++) {
+               memset(&rt, 0, sizeof(rt));
+               rt.rt_flags = RTF_UP;
+
+               memset(&addr, 0, sizeof(addr));
+               addr.sin_family = AF_INET;
+               addr.sin_addr.s_addr = inet_addr(dns_servers[i]);
+               memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+
+               memset(&addr, 0, sizeof(addr));
+               addr.sin_family = AF_INET;
+               addr.sin_addr.s_addr = INADDR_ANY;
+               memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+               /* set mask using by prefix length */
+               memset(&addr, 0, sizeof(addr));
+               addr.sin_family = AF_INET;
+               addr.sin_addr.s_addr = INADDR_ANY;
+               addr.sin_addr.s_addr = host2net(make_mask(32));
+               memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+
+               rt.rt_dev = if_name;
+
+               if (ioctl(sk, SIOCADDRT, &rt) < 0) {
+                       LOGE("ioctl SIOCADDRT failed : %s", strerror(errno));
+                       close(sk);
+                       return VPNSVC_ERROR_IO_ERROR;
+               }
+       }
+
+       close(sk);
+
+       return VPNSVC_ERROR_NONE;
+}
+
 static void connman_connection_open(void)
 {
        if (global_connection == NULL) {
@@ -871,6 +921,16 @@ int vpn_daemon_up(int iface_index, const char* local_ip, const char* remote_ip,
                }
        }
 
+       /* add DNS routes */
+       if (nr_dns > 0) {
+               ret = add_dns_routes(ifr_tun.ifr_name, dns_servers, nr_dns);
+               if (ret != VPNSVC_ERROR_NONE) {
+                       LOGE("add_dns failed");
+                       return ret;
+               }
+       }
+
+#if 0
        /* add DNS servers */
        if (nr_dns > 0) {
                ret = add_dns_servers(dns_servers, nr_dns, total_dns_string_cnt);
@@ -892,10 +952,13 @@ int vpn_daemon_up(int iface_index, const char* local_ip, const char* remote_ip,
        if (nr_dns > 0) {
                dns_nat_register(dns_servers, nr_dns, local_ip);
        }
+#endif
 
        return ret;
 }
 
+
+
 int vpn_daemon_down(int iface_index)
 {
        struct ifreq ifr, addr_ifr;