Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 | /*
*
* 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 <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <ell/ell.h>
#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/ussd.h>
#include "util.h"
#include "smsutil.h"
#include "vendor.h"
#include "gatchat.h"
#include "gatresult.h"
#include "atmodem.h"
static const char *cusd_prefix[] = { "+CUSD:", NULL };
static const char *none_prefix[] = { NULL };
static const char *cscs_prefix[] = { "+CSCS:", NULL };
struct ussd_data {
GAtChat *chat;
unsigned int vendor;
enum at_util_charset charset;
};
static void read_charset_cb(gboolean ok, GAtResult *result,
gpointer user_data)
{
struct ussd_data *data = user_data;
if (!ok)
return;
at_util_parse_cscs_query(result, &data->charset);
}
static const unsigned char *ucs2_gsm_to_packed(const char *content,
long *msg_len,
unsigned char *msg)
{
unsigned char *decoded;
long len;
unsigned char *gsm;
long written;
unsigned char *packed;
unsigned char buf[182 * 2]; /* 182 USSD chars * 2 (UCS2) */
if (strlen(content) > sizeof(buf) * 2) /* Hex, 2 chars / byte */
return NULL;
decoded = decode_hex_own_buf(content, -1, &len, 0, buf);
if (decoded == NULL)
return NULL;
gsm = convert_ucs2_to_gsm(decoded, len, NULL, &written, 0);
if (gsm == NULL)
return NULL;
if (written > 182) {
l_free(gsm);
return NULL;
}
packed = pack_7bit_own_buf(gsm, written, 0, true, msg_len, 0, msg);
l_free(gsm);
return packed;
}
static void cusd_parse(GAtResult *result, struct ofono_ussd *ussd)
{
struct ussd_data *data = ofono_ussd_get_data(ussd);
GAtResultIter iter;
int status;
const char *content;
int dcs;
enum sms_charset charset;
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;
if (!cbs_dcs_decode(dcs, NULL, NULL, &charset, NULL, NULL, NULL)) {
ofono_error("Unsupported USSD data coding scheme (%02x)", dcs);
status = 4; /* Not supported */
goto out;
}
DBG("response charset %d modem charset %d", charset, data->charset);
switch (charset) {
case SMS_CHARSET_7BIT:
switch (data->charset) {
case AT_UTIL_CHARSET_GSM:
msg_ptr = pack_7bit_own_buf((const guint8 *) content,
-1, 0, true, &msg_len,
0, msg);
break;
case AT_UTIL_CHARSET_UTF8:
if (ussd_encode(content, &msg_len, msg) == TRUE)
msg_ptr = msg;
break;
case AT_UTIL_CHARSET_UCS2:
msg_ptr = ucs2_gsm_to_packed(content, &msg_len, msg);
break;
default:
msg_ptr = NULL;
}
break;
case SMS_CHARSET_8BIT:
case SMS_CHARSET_UCS2:
msg_ptr = decode_hex_own_buf(content, -1, &msg_len, 0, msg);
break;
}
DBG("msg ptr %p msg len %ld", msg_ptr, msg_len);
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 at_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];
enum sms_charset charset;
cbd->user = ussd;
if (!cbs_dcs_decode(dcs, NULL, NULL, &charset,
NULL, NULL, NULL))
goto error;
if (charset == SMS_CHARSET_7BIT) {
unsigned char unpacked_buf[182];
long written;
unpack_7bit_own_buf(pdu, len, 0, true, sizeof(unpacked_buf),
&written, 0, unpacked_buf);
if (written < 1)
goto error;
snprintf(buf, sizeof(buf), "AT+CUSD=1,\"%.*s\",%d",
(int) written, unpacked_buf, dcs);
} else {
char coded_buf[321];
char *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 ussd_data *data = cbd->user;
struct ofono_error error;
decode_at_error(&error, g_at_result_final_response(result));
switch (data->vendor) {
case OFONO_VENDOR_GOBI:
case OFONO_VENDOR_QUALCOMM_MSM:
/* 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;
break;
default:
break;
}
cb(&error, cbd->data);
}
static void at_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 at_ussd_register(gboolean ok, GAtResult *result, gpointer user)
{
struct ofono_ussd *ussd = user;
struct ussd_data *data = ofono_ussd_get_data(ussd);
if (!ok) {
ofono_error("Could not enable CUSD notifications");
ofono_ussd_remove(ussd);
return;
}
g_at_chat_register(data->chat, "+CUSD:", cusd_notify,
FALSE, ussd, NULL);
ofono_ussd_register(ussd);
}
static int at_ussd_probe(struct ofono_ussd *ussd, unsigned int vendor,
void *user)
{
GAtChat *chat = user;
struct ussd_data *data;
data = g_new0(struct ussd_data, 1);
data->chat = g_at_chat_clone(chat);
data->vendor = vendor;
ofono_ussd_set_data(ussd, data);
g_at_chat_send(data->chat, "AT+CSCS?", cscs_prefix,
read_charset_cb, data, NULL);
g_at_chat_send(data->chat, "AT+CUSD=1", NULL,
at_ussd_register, ussd, NULL);
return 0;
}
static void at_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 const struct ofono_ussd_driver driver = {
.name = "atmodem",
.probe = at_ussd_probe,
.remove = at_ussd_remove,
.request = at_ussd_request,
.cancel = at_ussd_cancel
};
void at_ussd_init(void)
{
ofono_ussd_driver_register(&driver);
}
void at_ussd_exit(void)
{
ofono_ussd_driver_unregister(&driver);
}
|