[PATCH 6/6] gsmdial: Configure network interface for PPP

[Zhenhua Zhang]

---
 gatchat/gsmdial.c |   29 +++++++++++++++++++++++++++++
 1 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/gatchat/gsmdial.c b/gatchat/gsmdial.c
index a69a610..59f1a5c 100644
--- a/gatchat/gsmdial.c
+++ b/gatchat/gsmdial.c
@@ -38,6 +38,8 @@
 #include <gattty.h>
 #include <gatppp.h>
 
+#define IFCONFIG_PATH "/sbin/ifconfig"
+
 static const char *none_prefix[] = { NULL };
 static const char *cfun_prefix[] = { "+CFUN:", NULL };
 static const char *creg_prefix[] = { "+CREG:", NULL };
@@ -221,16 +223,43 @@ out:
        return FALSE;
 }
 
+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_data)
 {
+       char buf[512];
+
        /* print out the negotiated address and dns server */
        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);
+
+       if (getuid() != 0) {
+               g_print("Need root priviledge to config PPP interface\n");
+               return;
+       }
+
+       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);
 }
 
 static void ppp_disconnect(GAtPPPDisconnectReason reason, gpointer user_data)
-- 
1.6.3.3

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