huaweimodem: Add NDIS based GPRS context driver

3 files changed, 344 insertions, 0 deletions

diff --git a/drivers/huaweimodem/gprs-context.c b/drivers/huaweimodem/gprs-context.c
new file mode 100644
index 00000000..7dcf9f4e
--- /dev/null
+++ b/drivers/huaweimodem/gprs-context.c
@@ -0,0 +1,338 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2008-2010  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <glib.h>
+
+#include <ofono/log.h>
+#include <ofono/modem.h>
+#include <ofono/gprs-context.h>
+
+#include "gatchat.h"
+#include "gatresult.h"
+
+#include "huaweimodem.h"
+
+#define AUTH_BUF_LENGTH OFONO_GPRS_MAX_USERNAME_LENGTH + \
+			OFONO_GPRS_MAX_PASSWORD_LENGTH + 128
+
+static const char *none_prefix[] = { NULL };
+static const char *dhcp_prefix[] = { "^DHCP:", NULL };
+
+struct gprs_context_data {
+	GAtChat *chat;
+	unsigned int active_context;
+	unsigned int dhcp_source;
+	union {
+		ofono_gprs_context_cb_t down_cb;	/* Down callback */
+		ofono_gprs_context_up_cb_t up_cb;	/* Up callback */
+	};
+	void *cb_data;					/* Callback data */
+};
+
+static void check_dhcp(struct ofono_gprs_context *gc);
+
+static gboolean dhcp_poll(gpointer user_data)
+{
+	struct ofono_gprs_context *gc = user_data;
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+	check_dhcp(gc);
+
+	gcd->dhcp_source = 0;
+
+	return FALSE;
+}
+
+static gboolean get_next_addr(GAtResultIter *iter, char **addr)
+{
+	const char *str;
+	guint32 val;
+
+	if (g_at_result_iter_next_unquoted_string(iter, &str) == FALSE)
+		return FALSE;
+
+	val = strtol(str, NULL, 16);
+
+	if (addr)
+	        *addr = g_strdup_printf("%u.%u.%u.%u",
+					(val & 0x000000ff),
+					(val & 0x0000ff00) >> 8,
+					(val & 0x00ff0000) >> 16,
+					(val & 0xff000000) >> 24);
+
+	return TRUE;
+}
+
+static void dhcp_query_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct ofono_gprs_context *gc = user_data;
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	GAtResultIter iter;
+	const char *interface;
+	char *ip = NULL;
+	char *netmask = NULL;
+	char *gateway = NULL;
+	char *dns1 = NULL;
+	char *dns2 = NULL;
+	const char *dns[3];
+
+	DBG("");
+
+	if (!ok) {
+		gcd->dhcp_source = g_timeout_add_seconds(1, dhcp_poll, gc);
+		return;
+	}
+
+	g_at_result_iter_init(&iter, result);
+
+	if (g_at_result_iter_next(&iter, "^DHCP:") == FALSE)
+		return;
+
+	get_next_addr(&iter, &ip);
+	get_next_addr(&iter, &netmask);
+	get_next_addr(&iter, &gateway);
+	get_next_addr(&iter, NULL);
+	get_next_addr(&iter, &dns1);
+	get_next_addr(&iter, &dns2);
+
+	dns[0] = dns1;
+	dns[1] = dns2;
+	dns[2] = 0;
+
+	ofono_info("Got the following parameters for context: %d",
+							gcd->active_context);
+	ofono_info("IP: %s, Gateway: %s", ip, gateway);
+	ofono_info("DNS: %s, %s", dns1, dns2);
+
+	interface = "invalid";
+
+	CALLBACK_WITH_SUCCESS(gcd->up_cb, interface, TRUE, ip,
+					netmask, gateway, dns, gcd->cb_data);
+	gcd->up_cb = NULL;
+	gcd->cb_data = NULL;
+
+	g_free(ip);
+	g_free(netmask);
+	g_free(gateway);
+	g_free(dns1);
+	g_free(dns2);
+}
+
+static void check_dhcp(struct ofono_gprs_context *gc)
+{
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+	g_at_chat_send(gcd->chat, "AT^DHCP?", dhcp_prefix,
+					dhcp_query_cb, gc, NULL);
+}
+
+static void at_ndisdup_down_cb(gboolean ok, GAtResult *result,
+				gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_gprs_context_cb_t cb = cbd->cb;
+	struct ofono_gprs_context *gc = cbd->user;
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	struct ofono_error error;
+
+	DBG("");
+
+	if (ok) {
+		gcd->down_cb = cb;
+		gcd->cb_data = cbd->data;
+	}
+
+	decode_at_error(&error, g_at_result_final_response(result));
+	cb(&error, cbd->data);
+}
+
+static void at_ndisdup_up_cb(gboolean ok, GAtResult *result,
+				gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_gprs_context_up_cb_t cb = cbd->cb;
+	struct ofono_gprs_context *gc = cbd->user;
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	struct ofono_error error;
+
+	DBG("");
+
+	if (ok) {
+		gcd->up_cb = cb;
+		gcd->cb_data = cbd->data;
+
+		check_dhcp(gc);
+		return;
+	}
+
+	gcd->active_context = 0;
+
+	decode_at_error(&error, g_at_result_final_response(result));
+	cb(&error, NULL, FALSE, NULL, NULL, NULL, NULL, cbd->data);
+}
+
+static void at_cgdcont_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+	struct cb_data *cbd = user_data;
+	ofono_gprs_context_up_cb_t cb = cbd->cb;
+	struct ofono_gprs_context *gc = cbd->user;
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	struct cb_data *ncbd;
+	char buf[64];
+
+	DBG("");
+
+	if (!ok) {
+		struct ofono_error error;
+
+		gcd->active_context = 0;
+
+		decode_at_error(&error, g_at_result_final_response(result));
+		cb(&error, NULL, 0, NULL, NULL, NULL, NULL, cbd->data);
+		return;
+	}
+
+	ncbd = g_memdup(cbd, sizeof(struct cb_data));
+
+	snprintf(buf, sizeof(buf), "AT^NDISDUP=%u,1", gcd->active_context);
+
+	if (g_at_chat_send(gcd->chat, buf, none_prefix,
+				at_ndisdup_up_cb, ncbd, g_free) > 0)
+		return;
+
+	g_free(ncbd);
+
+	gcd->active_context = 0;
+
+	CALLBACK_WITH_FAILURE(cb, NULL, 0, NULL, NULL, NULL, NULL, cbd->data);
+}
+
+static void huawei_gprs_activate_primary(struct ofono_gprs_context *gc,
+				const struct ofono_gprs_primary_context *ctx,
+				ofono_gprs_context_up_cb_t cb, void *data)
+{
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	struct cb_data *cbd = cb_data_new(cb, data);
+	char buf[AUTH_BUF_LENGTH];
+	int len;
+
+	DBG("");
+
+	if (!cbd)
+		goto error;
+
+	gcd->active_context = ctx->cid;
+
+	cbd->user = gc;
+
+	len = snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\"", ctx->cid);
+
+	if (ctx->apn)
+		snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"",
+				ctx->apn);
+
+	if (g_at_chat_send(gcd->chat, buf, none_prefix,
+				at_cgdcont_cb, cbd, g_free) > 0)
+		return;
+
+error:
+	g_free(cbd);
+
+	CALLBACK_WITH_FAILURE(cb, NULL, 0, NULL, NULL, NULL, NULL, data);
+}
+
+static void huawei_gprs_deactivate_primary(struct ofono_gprs_context *gc,
+					unsigned int cid,
+					ofono_gprs_context_cb_t cb, void *data)
+{
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+	struct cb_data *cbd = cb_data_new(cb, data);
+	char buf[128];
+
+	DBG("cid %u", cid);
+
+	if (!cbd)
+		goto error;
+
+	cbd->user = gc;
+
+	snprintf(buf, sizeof(buf), "AT^NDISDUP=%u,0", cid);
+
+	if (g_at_chat_send(gcd->chat, buf, none_prefix,
+				at_ndisdup_down_cb, cbd, g_free) > 0)
+		return;
+
+error:
+	g_free(cbd);
+
+	CALLBACK_WITH_FAILURE(cb, data);
+}
+
+static int huawei_gprs_context_probe(struct ofono_gprs_context *gc,
+					unsigned int vendor, void *data)
+{
+	GAtChat *chat = data;
+	struct gprs_context_data *gcd;
+
+	gcd = g_new0(struct gprs_context_data, 1);
+	gcd->chat = g_at_chat_clone(chat);
+
+	ofono_gprs_context_set_data(gc, gcd);
+
+	return 0;
+}
+
+static void huawei_gprs_context_remove(struct ofono_gprs_context *gc)
+{
+	struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+	ofono_gprs_context_set_data(gc, NULL);
+
+	g_at_chat_unref(gcd->chat);
+	g_free(gcd);
+}
+
+static struct ofono_gprs_context_driver driver = {
+	.name			= "huaweimodem",
+	.probe			= huawei_gprs_context_probe,
+	.remove			= huawei_gprs_context_remove,
+	.activate_primary	= huawei_gprs_activate_primary,
+	.deactivate_primary	= huawei_gprs_deactivate_primary,
+};
+
+void huawei_gprs_context_init()
+{
+	ofono_gprs_context_driver_register(&driver);
+}
+
+void huawei_gprs_context_exit()
+{
+	ofono_gprs_context_driver_unregister(&driver);
+}
diff --git a/drivers/huaweimodem/huaweimodem.c b/drivers/huaweimodem/huaweimodem.c
index cc19c77e..567cbbf8 100644
--- a/drivers/huaweimodem/huaweimodem.c
+++ b/drivers/huaweimodem/huaweimodem.c
@@ -34,11 +34,14 @@
 
 static int huaweimodem_init(void)
 {
+	huawei_gprs_context_init();
+
 	return 0;
 }
 
 static void huaweimodem_exit(void)
 {
+	huawei_gprs_context_exit();
 }
 
 OFONO_PLUGIN_DEFINE(huaweimodem, "Huawei modem driver", VERSION,
diff --git a/drivers/huaweimodem/huaweimodem.h b/drivers/huaweimodem/huaweimodem.h
index 703fb044..91b51801 100644
--- a/drivers/huaweimodem/huaweimodem.h
+++ b/drivers/huaweimodem/huaweimodem.h
@@ -20,3 +20,6 @@
  */
 
 #include <drivers/atmodem/atutil.h>
+
+extern void huawei_gprs_context_init();
+extern void huawei_gprs_context_exit();