2009-07-09 21:40:58 +00:00
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/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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2009-07-11 00:07:23 +00:00
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#include <string.h>
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2009-07-09 21:40:58 +00:00
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#include <glib.h>
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#include "simutil.h"
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2009-07-11 00:07:23 +00:00
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#include "util.h"
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2009-07-09 21:40:58 +00:00
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/* Parse ASN.1 Basic Encoding Rules TLVs per ISO/IEC 7816 */
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const guint8 *ber_tlv_find_by_tag(const guint8 *pdu, guint8 in_tag,
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int in_len, int *out_len)
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{
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guint8 tag;
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int len;
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const guint8 *end = pdu + in_len;
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do {
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while (pdu < end && (*pdu == 0x00 || *pdu == 0xff))
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pdu ++;
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if (pdu == end)
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break;
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tag = *pdu ++;
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if (!(0x1f & ~tag))
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while (pdu < end && (*pdu ++ & 0x80));
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if (pdu == end)
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break;
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for (len = 0; pdu + 1 < end && (*pdu & 0x80);
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len = (len | (*pdu ++ & 0x7f)) << 7);
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if (*pdu & 0x80)
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break;
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len |= *pdu ++;
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if (tag == in_tag && pdu + len <= end) {
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if (out_len)
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*out_len = len;
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return pdu;
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}
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pdu += len;
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} while (pdu < end);
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return NULL;
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}
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2009-07-11 00:07:23 +00:00
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char *sim_network_name_parse(const unsigned char *buffer, int length,
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gboolean *add_ci)
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{
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char *ret = NULL;
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unsigned char *endp;
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unsigned char dcs;
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int i;
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gboolean ci = FALSE;
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if (length < 1)
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return NULL;
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dcs = *buffer ++;
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length --;
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/* "The MS should add the letters for the Country's Initials and a
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* separator (e.g. a space)" */
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if (is_bit_set(dcs, 4))
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ci = TRUE;
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switch (dcs & (7 << 4)) {
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case 0x00:
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endp = memchr(buffer, 0xff, length);
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if (endp)
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length = endp - buffer;
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ret = convert_gsm_to_utf8(buffer, length,
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NULL, NULL, 0xff);
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break;
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case 0x10:
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if ((length % 2) == 1) {
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if (buffer[length - 1] != 0xff)
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return NULL;
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length = length - 1;
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}
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for (i = 0; i < length; i += 2)
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if (buffer[i] == 0xff && buffer[i + 1] == 0xff)
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break;
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ret = g_convert(buffer, length, "UTF-8//TRANSLIT", "UCS-2BE",
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NULL, NULL, NULL);
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break;
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}
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if (add_ci)
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*add_ci = ci;
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return ret;
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}
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