11:06 a.m.
Implement new options for gsmdial to use PPP and set the user name and
password for authentication if needed.
---
gatchat/gsmdial.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 84 insertions(+), 3 deletions(-)
diff --git a/gatchat/gsmdial.c b/gatchat/gsmdial.c
index 2087e70..aee9eea 100644
--- a/gatchat/gsmdial.c
+++ b/gatchat/gsmdial.c
@@ -36,6 +36,7 @@
#include <glib.h>
#include <gatchat.h>
#include <gattty.h>
+#include <gatppp.h>
static const char *none_prefix[] = { NULL };
static const char *cgreg_prefix[] = { "+CGREG:", NULL };
@@ -48,7 +49,11 @@ static gint option_cid = 0;
static gchar *option_apn = NULL;
static gint option_offmode = 0;
static gboolean option_legacy = FALSE;
+static gboolean option_ppp = FALSE;
+static gchar *option_username = NULL;
+static gchar *option_password = NULL;
+static GAtPPP *ppp;
static GAtChat *control;
static GAtChat *modem;
static GMainLoop *event_loop;
@@ -223,6 +228,76 @@ static void at_cgact_up_cb(gboolean ok, GAtResult *result, gpointer
user_data)
g_at_chat_send(modem, buf, none_prefix, NULL, NULL, NULL);
}
+static void print_ip_address(const char *label, guint32 ip_addr)
+{
+ struct in_addr addr;
+ char buf[INET_ADDRSTRLEN];
+
+ addr.s_addr = ip_addr;
+
+ if (inet_ntop(AF_INET, &addr, buf, INET_ADDRSTRLEN))
+ g_print("%s: %s\n", label, buf);
+}
+
+static void ppp_connect(GAtPPP *ppp, GAtPPPConnectStatus success,
+ guint32 ip_addr, guint32 dns1, guint32 dns2,
+ gpointer user_data)
+{
+ if (success != G_AT_PPP_CONNECT_SUCCESS) {
+ g_print("Failed to create PPP interface!\n");
+ return;
+ }
+
+ /* print out the negotiated address and dns server */
+ print_ip_address("IP Address", ip_addr);
+ print_ip_address("Primary DNS Server", dns1);
+ print_ip_address("Secondary DNS Server", dns2);
+}
+
+static void ppp_disconnect(GAtPPP *ppp, gpointer user_data)
+{
+ g_print("PPP Link down\n");
+}
+
+static void connect_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ GIOChannel *channel;
+
+ if (!ok) {
+ g_print("Unable to define context\n");
+ exit(1);
+ }
+
+ if (option_ppp == FALSE)
+ return;
+
+ /* get the data IO channel */
+ channel = g_at_chat_get_channel(modem);
+
+ /*
+ * shutdown gatchat or else it tries to take all the input
+ * from the modem and does not let PPP get it.
+ */
+ g_at_chat_shutdown(control);
+ g_at_chat_shutdown(modem);
+
+ /* open ppp */
+ ppp = g_at_ppp_new(channel);
+ if (!ppp) {
+ g_print("Unable to create PPP object\n");
+ return;
+ }
+ g_at_ppp_set_credentials(ppp, option_username,
+ option_password);
+
+ /* set connect and disconnect callbacks */
+ g_at_ppp_set_connect_function(ppp, ppp_connect, NULL);
+ g_at_ppp_set_disconnect_function(ppp, ppp_disconnect, NULL);
+
+ /* open the ppp connection */
+ g_at_ppp_open(ppp);
+}
+
static void at_cgdcont_cb(gboolean ok, GAtResult *result, gpointer user_data)
{
char buf[64];
@@ -233,9 +308,9 @@ static void at_cgdcont_cb(gboolean ok, GAtResult *result, gpointer
user_data)
}
if (option_legacy == TRUE) {
- sprintf(buf, "ATD*99***%u#", option_cid);
- g_at_chat_send(modem, buf, none_prefix,
- NULL, NULL, NULL);
+ sprintf(buf, "ATD*99***%u#", option_cid);
+ g_at_chat_send(modem, buf, none_prefix,
+ connect_cb, NULL, NULL);
} else {
sprintf(buf, "AT+CGACT=1,%u", option_cid);
g_at_chat_send(control, buf, none_prefix,
@@ -452,6 +527,12 @@ static GOptionEntry options[] = {
"Specify CFUN offmode" },
{ "legacy", 'l', 0, G_OPTION_ARG_NONE, &option_legacy,
"Use ATD*99***<cid>#" },
+ { "ppp", 'P', 0, G_OPTION_ARG_NONE, &option_ppp,
+ "Connect using PPP" },
+ { "username", 'u', 0, G_OPTION_ARG_STRING, &option_username,
+ "Specify PPP username" },
+ { "password", 'w', 0, G_OPTION_ARG_STRING, &option_password,
+ "Specifiy PPP password" },
{ NULL },
};
--
1.6.6.1