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/*
*
* 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
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <ofono/types.h>
#include "stkutil.h"
#include "smsutil.h"
#include "simutil.h"
#include "util.h"
static gboolean parse_dataobj_text(struct stk_command *command,
struct comprehension_tlv_iter *iter)
{
unsigned int len;
if (comprehension_tlv_iter_next(iter) != TRUE)
return FALSE;
if (comprehension_tlv_iter_get_tag(iter) !=
STK_DATA_OBJECT_TYPE_TEXT)
return FALSE;
len = comprehension_tlv_iter_get_length(iter);
/* DCS followed by some text, cannot be 1 */
if (len == 1)
return FALSE;
if (len > 0) {
const unsigned char *data =
comprehension_tlv_iter_get_data(iter);
unsigned char dcs = data[0];
char *utf8;
switch (dcs) {
case 0x00:
{
long written;
unsigned long max_to_unpack = (len - 1) * 8 / 7;
unsigned char *unpacked = unpack_7bit(data + 1, len - 1,
0, FALSE,
max_to_unpack,
&written, 0);
if (unpacked == NULL)
return FALSE;
utf8 = convert_gsm_to_utf8(unpacked, written,
NULL, NULL, 0);
g_free(unpacked);
break;
}
case 0x04:
utf8 = convert_gsm_to_utf8(data + 1, len - 1,
NULL, NULL, 0);
break;
case 0x08:
utf8 = g_convert((const gchar *) data + 1, len - 1,
"UTF-8//TRANSLIT", "UCS-2BE",
NULL, NULL, NULL);
break;
default:
return FALSE;;
}
if (utf8 == NULL)
return FALSE;
command->display_text.text = utf8;
} else
command->display_text.text = NULL;
return TRUE;
}
static void destroy_display_text(struct stk_command *command)
{
g_free(command->display_text.text);
}
static gboolean parse_display_text(struct stk_command *command,
struct comprehension_tlv_iter *iter)
{
if (parse_dataobj_text(command, iter) == FALSE)
return FALSE;
command->destructor = destroy_display_text;
return TRUE;
}
struct stk_command *stk_command_new_from_pdu(const unsigned char *pdu,
unsigned int len)
{
struct ber_tlv_iter ber;
struct comprehension_tlv_iter iter;
const unsigned char *data;
struct stk_command *command;
gboolean ok;
ber_tlv_iter_init(&ber, pdu, len);
if (ber_tlv_iter_next(&ber) != TRUE)
return NULL;
/* We should be wrapped in a Proactive UICC Command Tag 0xD0 */
if (ber_tlv_iter_get_short_tag(&ber) != 0xD0)
return NULL;
ber_tlv_iter_recurse_comprehension(&ber, &iter);
/*
* Now parse actual command details, they come in order with
* Command Details TLV first, followed by Device Identities TLV
*/
if (comprehension_tlv_iter_next(&iter) != TRUE)
return NULL;
if (comprehension_tlv_iter_get_tag(&iter) !=
STK_DATA_OBJECT_TYPE_COMMAND_DETAILS)
return NULL;
if (comprehension_tlv_iter_get_length(&iter) != 0x03)
return NULL;
data = comprehension_tlv_iter_get_data(&iter);
command = g_new0(struct stk_command, 1);
command->number = data[0];
command->type = data[1];
command->qualifier = data[2];
if (comprehension_tlv_iter_next(&iter) != TRUE)
goto fail;
if (comprehension_tlv_iter_get_tag(&iter) !=
STK_DATA_OBJECT_TYPE_DEVICE_IDENTITIES)
goto fail;
if (comprehension_tlv_iter_get_length(&iter) != 0x02)
goto fail;
data = comprehension_tlv_iter_get_data(&iter);
command->src = data[0];
command->dst = data[1];
switch (command->type) {
case STK_COMMAND_TYPE_DISPLAY_TEXT:
ok = parse_display_text(command, &iter);
break;
default:
ok = FALSE;
break;
};
if (ok)
return command;
fail:
if (command->destructor)
command->destructor(command);
g_free(command);
return NULL;
}
void stk_command_free(struct stk_command *command)
{
if (command->destructor)
command->destructor(command);
g_free(command);
}
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