blob: c2284806e43d0f3d53bd2ec45cfe62c5afe29354 [file] [log] [blame]
/*
*
* oFono - Open Source Telephony
*
* Copyright (C) 2008-2011 Intel Corporation. All rights reserved.
* Copyright (C) 2010 ST-Ericsson AB.
*
* 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
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ell/ell.h>
#include <glib.h>
#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/gprs-context.h>
#include <ofono/gprs.h>
#include <linux/types.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include "gatchat.h"
#include "gatresult.h"
#include "stemodem.h"
#include "caif_socket.h"
#include "if_caif.h"
#include "caif_rtnl.h"
#include "common.h"
#define MAX_DNS 2
#define IP_ADDR_LEN 20
#define AUTH_BUF_LENGTH (OFONO_GPRS_MAX_USERNAME_LENGTH + \
OFONO_GPRS_MAX_PASSWORD_LENGTH + 128)
static const char *none_prefix[] = { NULL };
struct gprs_context_data {
GAtChat *chat;
unsigned int active_context;
/* Id used by CAIF and EPPSD to identify the CAIF channel*/
unsigned int channel_id;
/* Linux Interface Id */
unsigned int ifindex;
/* Linux Interface name */
char interface[IF_NAMESIZE];
gboolean created;
};
struct eppsd_response {
char *current;
char ip_address[IP_ADDR_LEN];
char subnet_mask[IP_ADDR_LEN];
char mtu[IP_ADDR_LEN];
char dns_server1[IP_ADDR_LEN];
char dns_server2[IP_ADDR_LEN];
char p_cscf_server[IP_ADDR_LEN];
};
static void start_element_handler(GMarkupParseContext *context,
const gchar *element_name, const gchar **attribute_names,
const gchar **attribute_values, gpointer user_data,
GError **error)
{
struct eppsd_response *rsp = user_data;
rsp->current = NULL;
if (!strcmp(element_name, "ip_address"))
rsp->current = rsp->ip_address;
else if (!strcmp(element_name, "subnet_mask"))
rsp->current = rsp->subnet_mask;
else if (!strcmp(element_name, "mtu"))
rsp->current = rsp->mtu;
else if (!strcmp(element_name, "dns_server") &&
rsp->dns_server1[0] == '\0')
rsp->current = rsp->dns_server1;
else if (!strcmp(element_name, "dns_server"))
rsp->current = rsp->dns_server2;
else if (!strcmp(element_name, "p_cscf_server"))
rsp->current = rsp->p_cscf_server;
}
static void end_element_handler(GMarkupParseContext *context,
const gchar *element_name, gpointer user_data,
GError **error)
{
struct eppsd_response *rsp = user_data;
rsp->current = NULL;
}
static void text_handler(GMarkupParseContext *context,
const gchar *text, gsize text_len,
gpointer user_data, GError **error)
{
struct eppsd_response *rsp = user_data;
if (rsp->current) {
strncpy(rsp->current, text, IP_ADDR_LEN);
rsp->current[IP_ADDR_LEN] = '\0';
}
}
static void error_handler(GMarkupParseContext *context,
GError *error, gpointer user_data)
{
DBG("Error parsing xml response from eppsd: %s",
error->message);
}
static GMarkupParser parser = {
start_element_handler,
end_element_handler,
text_handler,
NULL,
error_handler
};
static void rtnl_callback(int ifindex, const char *ifname, void *user_data)
{
struct gprs_context_data *gcd = user_data;
if (ifindex < 0) {
gcd->created = FALSE;
ofono_error("Failed to create caif interface");
return;
}
l_strlcpy(gcd->interface, ifname, sizeof(gcd->interface));
gcd->ifindex = ifindex;
gcd->created = TRUE;
}
static void ste_eppsd_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);
if (!ok) {
struct ofono_error error;
decode_at_error(&error, g_at_result_final_response(result));
cb(&error, cbd->data);
return;
}
gcd->active_context = 0;
CALLBACK_WITH_SUCCESS(cb, cbd->data);
}
static void ste_eppsd_up_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);
GAtResultIter iter;
int i;
gsize length;
const char *res_string;
const char *dns[MAX_DNS + 1];
struct eppsd_response rsp;
GMarkupParseContext *context;
if (!ok) {
struct ofono_error error;
gcd->active_context = 0;
decode_at_error(&error, g_at_result_final_response(result));
cb(&error, cbd->data);
return;
}
rsp.current = NULL;
context = g_markup_parse_context_new(&parser, 0, &rsp, NULL);
memset(&rsp, 0, sizeof(rsp));
g_at_result_iter_init(&iter, result);
for (i = 0; i < g_at_result_num_response_lines(result); i++) {
g_at_result_iter_next(&iter, NULL);
res_string = g_at_result_iter_raw_line(&iter);
length = strlen(res_string);
if (!g_markup_parse_context_parse(context, res_string,
length, NULL))
goto error;
}
if (!g_markup_parse_context_end_parse(context, NULL))
goto error;
g_markup_parse_context_free(context);
dns[0] = rsp.dns_server1;
dns[1] = rsp.dns_server2;
dns[2] = NULL;
ofono_gprs_context_set_interface(gc, gcd->interface);
ofono_gprs_context_set_ipv4_address(gc, rsp.ip_address, TRUE);
ofono_gprs_context_set_ipv4_netmask(gc, rsp.subnet_mask);
ofono_gprs_context_set_ipv4_dns_servers(gc, dns);
CALLBACK_WITH_SUCCESS(cb, cbd->data);
return;
error:
DBG("ste_eppsd_up_cb error");
if (context)
g_markup_parse_context_free(context);
gcd->active_context = 0;
CALLBACK_WITH_FAILURE(cb, cbd->data);
}
static void ste_cgdcont_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 cb_data *ncbd;
char buf[128];
if (!ok) {
struct ofono_error error;
gcd->active_context = 0;
decode_at_error(&error, g_at_result_final_response(result));
cb(&error, cbd->data);
return;
}
snprintf(buf, sizeof(buf), "AT*EPPSD=1,%x,%u",
gcd->channel_id, gcd->active_context);
ncbd = g_memdup(cbd, sizeof(struct cb_data));
if (g_at_chat_send(gcd->chat, buf, NULL,
ste_eppsd_up_cb, ncbd, g_free) > 0)
return;
g_free(ncbd);
gcd->active_context = 0;
CALLBACK_WITH_FAILURE(cb, cbd->data);
}
static void ste_gprs_activate_primary(struct ofono_gprs_context *gc,
const struct ofono_gprs_primary_context *ctx,
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[AUTH_BUF_LENGTH];
/* IPv6 support not implemented */
if (ctx->proto != OFONO_GPRS_PROTO_IP)
goto error;
gcd->active_context = ctx->cid;
cbd->user = gc;
if (!gcd->created) {
DBG("CAIF interface not created (rtnl error?)");
goto error;
}
snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\",\"%s\"",
ctx->cid, ctx->apn);
if (g_at_chat_send(gcd->chat, buf, none_prefix,
ste_cgdcont_cb, cbd, g_free) == 0)
goto error;
/*
* Set username and password, this should be done after CGDCONT
* or an error can occur. We don't bother with error checking
* here
*/
snprintf(buf, sizeof(buf), "AT*EIAAUW=%d,1,\"%s\",\"%s\"",
ctx->cid, ctx->username, ctx->password);
g_at_chat_send(gcd->chat, buf, none_prefix, NULL, NULL, NULL);
return;
error:
gcd->active_context = 0;
g_free(cbd);
CALLBACK_WITH_FAILURE(cb, data);
}
static void ste_gprs_deactivate_primary(struct ofono_gprs_context *gc,
unsigned int id,
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[64];
cbd->user = gc;
snprintf(buf, sizeof(buf), "AT*EPPSD=0,%x,%u", gcd->channel_id, id);
if (g_at_chat_send(gcd->chat, buf, none_prefix,
ste_eppsd_down_cb, cbd, g_free) > 0)
return;
g_free(cbd);
CALLBACK_WITH_FAILURE(cb, data);
}
static void cgev_notify(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 *event;
int cid;
g_at_result_iter_init(&iter, result);
if (!g_at_result_iter_next(&iter, "+CGEV:"))
return;
if (!g_at_result_iter_next_unquoted_string(&iter, &event))
return;
if (g_str_has_prefix(event, "NW DEACT") == FALSE)
return;
if (!g_at_result_iter_skip_next(&iter))
return;
if (!g_at_result_iter_next_number(&iter, &cid))
return;
if ((unsigned int) cid != gcd->active_context)
return;
ofono_gprs_context_deactivated(gc, gcd->active_context);
gcd->active_context = 0;
}
static int ste_gprs_context_probe(struct ofono_gprs_context *gc,
unsigned int vendor, void *data)
{
GAtChat *chat = data;
struct gprs_context_data *gcd;
int err;
gcd = g_new0(struct gprs_context_data, 1);
gcd->chat = g_at_chat_clone(chat);
g_at_chat_register(gcd->chat, "+CGEV:", cgev_notify, FALSE, gc, NULL);
/* Need a unique channel id */
gcd->channel_id = (unsigned int)(unsigned long)gc;
ofono_gprs_context_set_data(gc, gcd);
err = caif_rtnl_create_interface(IFLA_CAIF_IPV4_CONNID,
gcd->channel_id, FALSE,
rtnl_callback, gcd);
if (err < 0) {
DBG("Failed to create IP interface for CAIF");
return err;
}
return 0;
}
static void ste_gprs_context_remove(struct ofono_gprs_context *gc)
{
struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
/*
* Removes IP interface for CAIF.
*/
if (!gcd->created)
goto out;
if (caif_rtnl_delete_interface(gcd->ifindex) < 0) {
ofono_error("Failed to delete caif interface %s",
gcd->interface);
goto out;
}
DBG("removed CAIF interface ch:%d ifname:%s ifindex:%d\n",
gcd->channel_id, gcd->interface, gcd->ifindex);
out:
ofono_gprs_context_set_data(gc, NULL);
g_at_chat_unref(gcd->chat);
g_free(gcd);
}
static const struct ofono_gprs_context_driver driver = {
.name = "stemodem",
.probe = ste_gprs_context_probe,
.remove = ste_gprs_context_remove,
.activate_primary = ste_gprs_activate_primary,
.deactivate_primary = ste_gprs_deactivate_primary,
};
void ste_gprs_context_init(void)
{
caif_rtnl_init();
ofono_gprs_context_driver_register(&driver);
}
void ste_gprs_context_exit(void)
{
ofono_gprs_context_driver_unregister(&driver);
caif_rtnl_exit();
}