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/*
*
* oFono - Open Source Telephony
*
* Copyright (C) 2008-2011 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
#include <stdio.h>
#include <errno.h>
#include <glib.h>
#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/ussd.h>
#include "util.h"
#include "gatchat.h"
#include "gatresult.h"
#include "huaweimodem.h"
static const char *cusd_prefix[] = { "+CUSD:", NULL };
static const char *none_prefix[] = { NULL };
struct ussd_data {
GAtChat *chat;
};
static void cusd_parse(GAtResult *result, struct ofono_ussd *ussd)
{
GAtResultIter iter;
int status, dcs;
const char *content;
unsigned char msg[160];
const unsigned char *msg_ptr = NULL;
long msg_len;
g_at_result_iter_init(&iter, result);
if (!g_at_result_iter_next(&iter, "+CUSD:"))
return;
if (!g_at_result_iter_next_number(&iter, &status))
return;
if (!g_at_result_iter_next_string(&iter, &content))
goto out;
if (!g_at_result_iter_next_number(&iter, &dcs))
dcs = 0;
msg_ptr = decode_hex_own_buf(content, -1, &msg_len, 0, msg);
out:
ofono_ussd_notify(ussd, status, dcs, msg_ptr, msg_ptr ? msg_len : 0);
}
static void cusd_request_cb(gboolean ok, GAtResult *result, gpointer user_data)
{
struct cb_data *cbd = user_data;
ofono_ussd_cb_t cb = cbd->cb;
struct ofono_ussd *ussd = cbd->user;
struct ofono_error error;
decode_at_error(&error, g_at_result_final_response(result));
cb(&error, cbd->data);
cusd_parse(result, ussd);
}
static void huawei_ussd_request(struct ofono_ussd *ussd, int dcs,
const unsigned char *pdu, int len,
ofono_ussd_cb_t cb, void *user_data)
{
struct ussd_data *data = ofono_ussd_get_data(ussd);
struct cb_data *cbd = cb_data_new(cb, user_data);
char buf[512], coded_buf[321];
char *converted;
cbd->user = ussd;
converted = encode_hex_own_buf(pdu, len, 0, coded_buf);
if (converted == NULL)
goto error;
snprintf(buf, sizeof(buf), "AT+CUSD=1,\"%s\",%d", converted, dcs);
if (g_at_chat_send(data->chat, buf, cusd_prefix,
cusd_request_cb, cbd, g_free) > 0)
return;
error:
g_free(cbd);
CALLBACK_WITH_FAILURE(cb, user_data);
}
static void cusd_cancel_cb(gboolean ok, GAtResult *result, gpointer user_data)
{
struct cb_data *cbd = user_data;
ofono_ussd_cb_t cb = cbd->cb;
struct ofono_error error;
decode_at_error(&error, g_at_result_final_response(result));
/*
* All errors and notifications arrive unexpected and
* thus just reset the state here. This is safer than
* getting stuck in a dead-lock.
*/
error.type = OFONO_ERROR_TYPE_NO_ERROR;
error.error = 0;
cb(&error, cbd->data);
}
static void huawei_ussd_cancel(struct ofono_ussd *ussd,
ofono_ussd_cb_t cb, void *user_data)
{
struct ussd_data *data = ofono_ussd_get_data(ussd);
struct cb_data *cbd = cb_data_new(cb, user_data);
cbd->user = data;
if (g_at_chat_send(data->chat, "AT+CUSD=2", none_prefix,
cusd_cancel_cb, cbd, g_free) > 0)
return;
g_free(cbd);
CALLBACK_WITH_FAILURE(cb, user_data);
}
static void cusd_notify(GAtResult *result, gpointer user_data)
{
struct ofono_ussd *ussd = user_data;
cusd_parse(result, ussd);
}
static void cusd_register(gboolean ok, GAtResult *result, gpointer user_data)
{
struct ofono_ussd *ussd = user_data;
struct ussd_data *data = ofono_ussd_get_data(ussd);
if (!ok) {
ofono_error("Could not enable CUSD notifications");
return;
}
g_at_chat_register(data->chat, "+CUSD:", cusd_notify,
FALSE, ussd, NULL);
ofono_ussd_register(ussd);
}
static int huawei_ussd_probe(struct ofono_ussd *ussd,
unsigned int vendor, void *user)
{
GAtChat *chat = user;
struct ussd_data *data;
data = g_try_new0(struct ussd_data, 1);
if (data == NULL)
return -ENOMEM;
data->chat = g_at_chat_clone(chat);
ofono_ussd_set_data(ussd, data);
g_at_chat_send(data->chat, "AT+CUSD=1", none_prefix,
cusd_register, ussd, NULL);
return 0;
}
static void huawei_ussd_remove(struct ofono_ussd *ussd)
{
struct ussd_data *data = ofono_ussd_get_data(ussd);
ofono_ussd_set_data(ussd, NULL);
g_at_chat_unref(data->chat);
g_free(data);
}
static struct ofono_ussd_driver driver = {
.name = "huaweimodem",
.probe = huawei_ussd_probe,
.remove = huawei_ussd_remove,
.request = huawei_ussd_request,
.cancel = huawei_ussd_cancel,
};
void huawei_ussd_init(void)
{
ofono_ussd_driver_register(&driver);
}
void huawei_ussd_exit(void)
{
ofono_ussd_driver_unregister(&driver);
}
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