Require ROOT priviledge to:
1. Run external command to configure and bring up network interface.
2. Enable kernel IP forwarding.
---
gatchat/test-server.c | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/gatchat/test-server.c b/gatchat/test-server.c
index 68371c2..df0bab8 100644
--- a/gatchat/test-server.c
+++ b/gatchat/test-server.c
@@ -50,6 +50,7 @@
#define DEFAULT_TCP_PORT 12346
#define DEFAULT_SOCK_PATH "./server_sock"
+#define IFCONFIG_PATH "/sbin/ifconfig"
static int modem_mode = 0;
static int modem_creg = 0;
@@ -91,15 +92,40 @@ static void server_debug(const char *str, void *data)
g_print("%s: %s\n", (char *) data, str);
}
+static gboolean execute(const char *cmd)
+{
+ int status;
+
+ status = system(cmd);
+ if (status < 0) {
+ g_print("Failed to execute command: %s\n", strerror(errno));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
static void ppp_connect(const char *iface, const char *local, const char *peer,
const char *dns1, const char *dns2,
gpointer user)
{
+ char buf[512];
+
g_print("Network Device: %s\n", iface);
g_print("IP Address: %s\n", local);
g_print("Peer IP Address: %s\n", peer);
g_print("Primary DNS Server: %s\n", dns1);
g_print("Secondary DNS Server: %s\n", dns2);
+
+ snprintf(buf, sizeof(buf), "%s %s up", IFCONFIG_PATH, iface);
+ execute(buf);
+
+ snprintf(buf, sizeof(buf), "%s %s %s pointopoint %s", IFCONFIG_PATH,
+ iface, local, peer);
+ execute(buf);
+
+ snprintf(buf, sizeof(buf), "echo 1 > /proc/sys/net/ipv4/ip_forward");
+ execute(buf);
}
static void ppp_disconnect(GAtPPPDisconnectReason reason, gpointer user)
@@ -139,6 +165,11 @@ static gboolean setup_ppp(gpointer user)
GAtServer *server = user;
GAtIO *io;
+ if (getuid() != 0) {
+ g_print("Need root priviledge for PPP connection\n");
+ return FALSE;
+ }
+
io = g_at_server_get_io(server);
g_at_server_suspend(server);
--
1.6.3.3
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