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authorPiotr Krysik <pkrysik@elka.pw.edu.pl>2018-05-11 11:39:23 +0200
committerPiotr Krysik <pkrysik@elka.pw.edu.pl>2018-05-11 11:39:23 +0200
commit4e4a92ea05cad0a2835528bdc23bc5c6332ad2b2 (patch)
treef0219f5847e1815f2d965578d056eca73799db03 /lib/decoding
parent1a32fc42a0f2d16af977fabef5b76b45eff0625d (diff)
Added functions for arfcn conversions taken from libosmocore
Diffstat (limited to 'lib/decoding')
-rw-r--r--lib/decoding/osmocom/gsm/CMakeLists.txt1
-rw-r--r--lib/decoding/osmocom/gsm/gsm_utils.c956
-rw-r--r--lib/decoding/osmocom/gsm/gsm_utils.h238
3 files changed, 1195 insertions, 0 deletions
diff --git a/lib/decoding/osmocom/gsm/CMakeLists.txt b/lib/decoding/osmocom/gsm/CMakeLists.txt
index 945d1c2..93ef28a 100644
--- a/lib/decoding/osmocom/gsm/CMakeLists.txt
+++ b/lib/decoding/osmocom/gsm/CMakeLists.txt
@@ -2,5 +2,6 @@ add_sources(
a5.c
auth_core.c
gsm48_ie.c
+gsm_utils.c
kasumi.c
)
diff --git a/lib/decoding/osmocom/gsm/gsm_utils.c b/lib/decoding/osmocom/gsm/gsm_utils.c
new file mode 100644
index 0000000..db88199
--- /dev/null
+++ b/lib/decoding/osmocom/gsm/gsm_utils.c
@@ -0,0 +1,956 @@
+/*! \file gsm_utils.c */
+/*
+ * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
+ * (C) 2009,2013 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010-2012 by Nico Golde <nico@ngolde.de>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+/*! \mainpage libosmogsm Documentation
+ *
+ * \section sec_intro Introduction
+ * This library is a collection of common code used in various
+ * GSM related sub-projects inside the Osmocom family of projects. It
+ * includes A5/1 and A5/2 ciphers, COMP128v1, a LAPDm implementation,
+ * a GSM TLV parser, SMS utility routines as well as
+ * protocol definitions for a series of protocols:
+ * * Um L2 (04.06)
+ * * Um L3 (04.08)
+ * * A-bis RSL (08.58)
+ * * A-bis OML (08.59, 12.21)
+ * * A (08.08)
+ * \n\n
+ * Please note that C language projects inside Osmocom are typically
+ * single-threaded event-loop state machine designs. As such,
+ * routines in libosmogsm are not thread-safe. If you must use them in
+ * a multi-threaded context, you have to add your own locking.
+ *
+ * libosmogsm is developed as part of the Osmocom (Open Source Mobile
+ * Communications) project, a community-based, collaborative development
+ * project to create Free and Open Source implementations of mobile
+ * communications systems. For more information about Osmocom, please
+ * see https://osmocom.org/
+ *
+ * \section sec_copyright Copyright and License
+ * Copyright © 2008-2011 - Harald Welte, Holger Freyther and contributors\n
+ * All rights reserved. \n\n
+ * The source code of libosmogsm is licensed under the terms of the GNU
+ * General Public License as published by the Free Software Foundation;
+ * either version 2 of the License, or (at your option) any later
+ * version.\n
+ * See <http://www.gnu.org/licenses/> or COPYING included in the source
+ * code package istelf.\n
+ * The information detailed here is provided AS IS with NO WARRANTY OF
+ * ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * \n\n
+ *
+ * \section sec_tracker Homepage + Issue Tracker
+ * libosmogsm is distributed as part of libosmocore and shares its
+ * project page at http://osmocom.org/projects/libosmocore
+ *
+ * An Issue Tracker can be found at
+ * https://osmocom.org/projects/libosmocore/issues
+ *
+ * \section sec_contact Contact and Support
+ * Community-based support is available at the OpenBSC mailing list
+ * <http://lists.osmocom.org/mailman/listinfo/openbsc>\n
+ * Commercial support options available upon request from
+ * <http://sysmocom.de/>
+ */
+
+//#include <openbsc/gsm_data.h>
+#include <osmocom/core/utils.h>
+/*#include <osmocom/core/bitvec.h>*/
+#include <osmocom/gsm/gsm_utils.h>
+/*#include <osmocom/gsm/meas_rep.h>*/
+#include <osmocom/gsm/protocol/gsm_04_08.h>
+
+/*#include <stdlib.h>*/
+/*#include <stdint.h>*/
+/*#include <string.h>*/
+/*#include <stdbool.h>*/
+/*#include <stdio.h>*/
+#include <errno.h>
+#include <ctype.h>
+/*#include <inttypes.h>*/
+/*#include <time.h>*/
+/*#include <unistd.h>*/
+
+/*#include "../../config.h"*/
+
+/* FIXME: this can be removed once we bump glibc requirements to 2.25: *
+#if defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 25)
+#include <sys/random.h>
+#elif HAVE_DECL_SYS_GETRANDOM
+#include <sys/syscall.h>
+#ifndef GRND_NONBLOCK
+#define GRND_NONBLOCK 0x0001
+#endif
+#endif
+
+#if (USE_GNUTLS)
+#pragma message ("including GnuTLS for getrandom fallback.")
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#endif
+*/
+
+/* ETSI GSM 03.38 6.2.1 and 6.2.1.1 default alphabet
+ * Greek symbols at hex positions 0x10 and 0x12-0x1a
+ * left out as they can't be handled with a char and
+ * since most phones don't display or write these
+ * characters this would only needlessly make the code
+ * more complex.
+ *
+ * Note that this table contains the latin1->7bit mapping _and_ has
+ * been merged with the reverse mapping (7bit->latin1) for the
+ * extended characters at offset 0x7f.
+ *
+static unsigned char gsm_7bit_alphabet[] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0a, 0xff, 0xff, 0x0d, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0x20, 0x21, 0x22, 0x23, 0x02, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
+ 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+ 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
+ 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+ 0x5a, 0x3c, 0x2f, 0x3e, 0x14, 0x11, 0xff, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+ 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7a, 0x28, 0x40, 0x29, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0x0c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x40, 0xff, 0x01, 0xff,
+ 0x03, 0xff, 0x7b, 0x7d, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5c, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5b, 0x7e, 0x5d, 0xff, 0x7c, 0xff, 0xff, 0xff,
+ 0xff, 0x5b, 0x0e, 0x1c, 0x09, 0xff, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5d,
+ 0xff, 0xff, 0xff, 0xff, 0x5c, 0xff, 0x0b, 0xff, 0xff, 0xff, 0x5e, 0xff, 0xff, 0x1e, 0x7f,
+ 0xff, 0xff, 0xff, 0x7b, 0x0f, 0x1d, 0xff, 0x04, 0x05, 0xff, 0xff, 0x07, 0xff, 0xff, 0xff,
+ 0xff, 0x7d, 0x08, 0xff, 0xff, 0xff, 0x7c, 0xff, 0x0c, 0x06, 0xff, 0xff, 0x7e, 0xff, 0xff
+};
+
+/* GSM 03.38 6.2.1 Character lookup for decoding *
+static int gsm_septet_lookup(uint8_t ch)
+{
+ int i = 0;
+ for (; i < sizeof(gsm_7bit_alphabet); i++) {
+ if (gsm_7bit_alphabet[i] == ch)
+ return i;
+ }
+ return -1;
+}
+
+/*! \brife Compute number of octets from number of septets,
+ * for instance: 47 septets needs 41,125 = 42 octets
+ * \param[in sept_len Number of Septets
+ * \returns Number of octets required *
+uint8_t gsm_get_octet_len(const uint8_t sept_len){
+ int octet_len = (sept_len * 7) / 8;
+ if ((sept_len * 7) % 8 != 0)
+ octet_len++;
+
+ return octet_len;
+}
+
+/*! TS 03.38 7-bit Character unpacking (6.2.1)
+ * \param[out] text Caller-provided output text buffer
+ * \param[in] n Length of \a text
+ * \param[in] user_data Input Data (septets)
+ * \param[in] septet_l Number of septets in \a user_data
+ * \param[in] ud_hdr_ind User Data Header present in data
+ * \returns number of bytes written to \a text *
+int gsm_7bit_decode_n_hdr(char *text, size_t n, const uint8_t *user_data, uint8_t septet_l, uint8_t ud_hdr_ind)
+{
+ unsigned shift = 0;
+ uint8_t c7, c8, next_is_ext = 0, lu, ru;
+ const uint8_t maxlen = gsm_get_octet_len(septet_l);
+ const char *text_buf_begin = text;
+ const char *text_buf_end = text + n;
+
+ OSMO_ASSERT (n > 0);
+
+ /* skip the user data header *
+ if (ud_hdr_ind) {
+ /* get user data header length + 1 (for the 'user data header length'-field) *
+ shift = ((user_data[0] + 1) * 8) / 7;
+ if ((((user_data[0] + 1) * 8) % 7) != 0)
+ shift++;
+ septet_l = septet_l - shift;
+ }
+
+ unsigned i, l, r;
+ for (i = 0; i < septet_l && text != text_buf_end - 1; i++) {
+
+ l = ((i + shift) * 7 + 7) >> 3;
+ r = ((i + shift) * 7) >> 3;
+
+ /* the left side index is always >= right side index
+ sometimes it even gets beyond array boundary
+ check for that explicitly and force 0 instead
+ *
+ if (l >= maxlen)
+ lu = 0;
+ else
+ lu = user_data[l] << (7 - (((i + shift) * 7 + 7) & 7));
+
+ ru = user_data[r] >> (((i + shift) * 7) & 7);
+
+ c7 = (lu | ru) & 0x7f;
+
+ if (next_is_ext) {
+ /* this is an extension character *
+ next_is_ext = 0;
+ c8 = gsm_7bit_alphabet[0x7f + c7];
+ } else if (c7 == 0x1b && i + 1 < septet_l) {
+ next_is_ext = 1;
+ continue;
+ } else {
+ c8 = gsm_septet_lookup(c7);
+ }
+
+ *(text++) = c8;
+ }
+
+ *text = '\0';
+
+ return text - text_buf_begin;
+}
+
+/*! Decode 7bit GSM Alphabet *
+int gsm_7bit_decode_n(char *text, size_t n, const uint8_t *user_data, uint8_t septet_l)
+{
+ return gsm_7bit_decode_n_hdr(text, n, user_data, septet_l, 0);
+}
+
+/*! Decode 7bit GSM Alphabet (USSD) *
+int gsm_7bit_decode_n_ussd(char *text, size_t n, const uint8_t *user_data, uint8_t length)
+{
+ int nchars;
+
+ nchars = gsm_7bit_decode_n_hdr(text, n, user_data, length, 0);
+ /* remove last <CR>, if it fits up to the end of last octet *
+ if (nchars && (user_data[gsm_get_octet_len(length) - 1] >> 1) == '\r')
+ text[--nchars] = '\0';
+
+ return nchars;
+}
+
+/*! Encode a ASCII characterrs as 7-bit GSM alphabet (TS 03.38)
+ *
+ * This function converts a zero-terminated input string \a data from
+ * ASCII into octet-aligned 7-bit GSM characters. No packing is
+ * performed.
+ *
+ * \param[out] result caller-allocated output buffer
+ * \param[in] data input data, ASCII
+ * \returns number of octets used in \a result *
+int gsm_septet_encode(uint8_t *result, const char *data)
+{
+ int i, y = 0;
+ uint8_t ch;
+ for (i = 0; i < strlen(data); i++) {
+ ch = data[i];
+ switch(ch){
+ /* fall-through for extension characters *
+ case 0x0c:
+ case 0x5e:
+ case 0x7b:
+ case 0x7d:
+ case 0x5c:
+ case 0x5b:
+ case 0x7e:
+ case 0x5d:
+ case 0x7c:
+ result[y++] = 0x1b;
+ default:
+ result[y] = gsm_7bit_alphabet[ch];
+ break;
+ }
+ y++;
+ }
+
+ return y;
+}
+
+/*! GSM Default Alphabet 7bit to octet packing
+ * \param[out] result Caller-provided output buffer
+ * \param[in] rdata Input data septets
+ * \param[in] septet_len Length of \a rdata
+ * \param[in] padding padding bits at start
+ * \returns number of bytes used in \a result *
+int gsm_septets2octets(uint8_t *result, const uint8_t *rdata, uint8_t septet_len, uint8_t padding)
+{
+ int i = 0, z = 0;
+ uint8_t cb, nb;
+ int shift = 0;
+ uint8_t *data = calloc(septet_len + 1, sizeof(uint8_t));
+
+ if (padding) {
+ shift = 7 - padding;
+ /* the first zero is needed for padding *
+ memcpy(data + 1, rdata, septet_len);
+ septet_len++;
+ } else
+ memcpy(data, rdata, septet_len);
+
+ for (i = 0; i < septet_len; i++) {
+ if (shift == 7) {
+ /*
+ * special end case with the. This is necessary if the
+ * last septet fits into the previous octet. E.g. 48
+ * non-extension characters:
+ * ....ag ( a = 1100001, g = 1100111)
+ * result[40] = 100001 XX, result[41] = 1100111 1 *
+ if (i + 1 < septet_len) {
+ shift = 0;
+ continue;
+ } else if (i + 1 == septet_len)
+ break;
+ }
+
+ cb = (data[i] & 0x7f) >> shift;
+ if (i + 1 < septet_len) {
+ nb = (data[i + 1] & 0x7f) << (7 - shift);
+ cb = cb | nb;
+ }
+
+ result[z++] = cb;
+ shift++;
+ }
+
+ free(data);
+
+ return z;
+}
+
+/*! GSM 7-bit alphabet TS 03.38 6.2.1 Character packing
+ * \param[out] result Caller-provided output buffer
+ * \param[in] n Maximum length of \a result in bytes
+ * \param[in] data octet-aligned string
+ * \param[out] octets Number of octets encoded
+ * \returns number of septets encoded *
+int gsm_7bit_encode_n(uint8_t *result, size_t n, const char *data, int *octets)
+{
+ int y = 0;
+ int o;
+ size_t max_septets = n * 8 / 7;
+
+ /* prepare for the worst case, every character expanding to two bytes *
+ uint8_t *rdata = calloc(strlen(data) * 2, sizeof(uint8_t));
+ y = gsm_septet_encode(rdata, data);
+
+ if (y > max_septets) {
+ /*
+ * Limit the number of septets to avoid the generation
+ * of more than n octets.
+ *
+ y = max_septets;
+ }
+
+ o = gsm_septets2octets(result, rdata, y, 0);
+
+ if (octets)
+ *octets = o;
+
+ free(rdata);
+
+ /*
+ * We don't care about the number of octets, because they are not
+ * unique. E.g.:
+ * 1.) 46 non-extension characters + 1 extension character
+ * => (46 * 7 bit + (1 * (2 * 7 bit))) / 8 bit = 42 octets
+ * 2.) 47 non-extension characters
+ * => (47 * 7 bit) / 8 bit = 41,125 = 42 octets
+ * 3.) 48 non-extension characters
+ * => (48 * 7 bit) / 8 bit = 42 octects
+ *
+ return y;
+}
+
+/*! Encode according to GSM 7-bit alphabet (TS 03.38 6.2.1) for USSD
+ * \param[out] result Caller-provided output buffer
+ * \param[in] n Maximum length of \a result in bytes
+ * \param[in] data octet-aligned string
+ * \param[out] octets Number of octets encoded
+ * \returns number of septets encoded *
+int gsm_7bit_encode_n_ussd(uint8_t *result, size_t n, const char *data, int *octets)
+{
+ int y;
+
+ y = gsm_7bit_encode_n(result, n, data, octets);
+ /* if last octet contains only one bit, add <CR> *
+ if (((y * 7) & 7) == 1)
+ result[(*octets) - 1] |= ('\r' << 1);
+ /* if last character is <CR> and completely fills last octet, add
+ * another <CR>. *
+ if (y && ((y * 7) & 7) == 0 && (result[(*octets) - 1] >> 1) == '\r' && *octets < n - 1) {
+ result[(*octets)++] = '\r';
+ y++;
+ }
+
+ return y;
+}
+
+/*! Generate random identifier
+ * We use /dev/urandom (default when GRND_RANDOM flag is not set).
+ * Both /dev/(u)random numbers are coming from the same CSPRNG anyway (at least on GNU/Linux >= 4.8).
+ * See also RFC4086.
+ * \param[out] out Buffer to be filled with random data
+ * \param[in] len Number of random bytes required
+ * \returns 0 on success, or a negative error code on error.
+ *
+int osmo_get_rand_id(uint8_t *out, size_t len)
+{
+ int rc = -ENOTSUP;
+
+ /* this function is intended for generating short identifiers only, not arbitrary-length random data *
+ if (len > OSMO_MAX_RAND_ID_LEN)
+ return -E2BIG;
+
+#if defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 25)
+ rc = getrandom(out, len, GRND_NONBLOCK);
+#elif HAVE_DECL_SYS_GETRANDOM
+#pragma message ("Using direct syscall access for getrandom(): consider upgrading to glibc >= 2.25")
+ /* FIXME: this can be removed once we bump glibc requirements to 2.25: *
+ rc = syscall(SYS_getrandom, out, len, GRND_NONBLOCK);
+#endif
+
+ /* getrandom() failed entirely: *
+ if (rc < 0) {
+#if (USE_GNUTLS)
+#pragma message ("Secure random failed: using GnuTLS fallback.")
+ return gnutls_rnd(GNUTLS_RND_RANDOM, out, len);
+#endif
+ return -errno;
+ }
+
+ /* getrandom() failed partially due to signal interruption:
+ this should never happen (according to getrandom(2)) as long as OSMO_MAX_RAND_ID_LEN < 256
+ because we do not set GRND_RANDOM but it's better to be paranoid and check anyway *
+ if (rc != len)
+ return -EAGAIN;
+
+ return 0;
+}
+
+/*! Build the RSL uplink measurement IE (3GPP TS 08.58 § 9.3.25)
+ * \param[in] mru Unidirectional measurement report structure
+ * \param[in] dtxd_used Indicates if DTXd was used during measurement report
+ * period
+ * \param[out] buf Pre-allocated bufer for storing IE
+ * \returns Number of bytes filled in buf
+ *
+size_t gsm0858_rsl_ul_meas_enc(struct gsm_meas_rep_unidir *mru, bool dtxd_used,
+ uint8_t *buf)
+{
+ buf[0] = dtxd_used ? (1 << 6) : 0;
+ buf[0] |= (mru->full.rx_lev & 0x3f);
+ buf[1] = (mru->sub.rx_lev & 0x3f);
+ buf[2] = ((mru->full.rx_qual & 7) << 3) | (mru->sub.rx_qual & 7);
+
+ return 3;
+}
+
+/*! Convert power class to dBm according to GSM TS 05.05
+ * \param[in] band GSM frequency band
+ * \param[in] class GSM power class
+ * \returns maximum transmit power of power class in dBm *
+unsigned int ms_class_gmsk_dbm(enum gsm_band band, int class)
+{
+ switch (band) {
+ case GSM_BAND_450:
+ case GSM_BAND_480:
+ case GSM_BAND_750:
+ case GSM_BAND_900:
+ case GSM_BAND_810:
+ case GSM_BAND_850:
+ if (class == 1)
+ return 43; /* 20W *
+ if (class == 2)
+ return 39; /* 8W *
+ if (class == 3)
+ return 37; /* 5W *
+ if (class == 4)
+ return 33; /* 2W *
+ if (class == 5)
+ return 29; /* 0.8W *
+ break;
+ case GSM_BAND_1800:
+ if (class == 1)
+ return 30; /* 1W *
+ if (class == 2)
+ return 24; /* 0.25W *
+ if (class == 3)
+ return 36; /* 4W *
+ break;
+ case GSM_BAND_1900:
+ if (class == 1)
+ return 30; /* 1W *
+ if (class == 2)
+ return 24; /* 0.25W *
+ if (class == 3)
+ return 33; /* 2W *
+ break;
+ }
+ return -EINVAL;
+}
+
+/*! determine power control level for given dBm value, as indicated
+ * by the tables in chapter 4.1.1 of GSM TS 05.05
+ * \param[in] GSM frequency band
+ * \param[in] dbm RF power value in dBm
+ * \returns TS 05.05 power control level *
+int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm)
+{
+ switch (band) {
+ case GSM_BAND_450:
+ case GSM_BAND_480:
+ case GSM_BAND_750:
+ case GSM_BAND_900:
+ case GSM_BAND_810:
+ case GSM_BAND_850:
+ if (dbm >= 39)
+ return 0;
+ else if (dbm < 5)
+ return 19;
+ else {
+ /* we are guaranteed to have (5 <= dbm < 39) *
+ return 2 + ((39 - dbm) / 2);
+ }
+ break;
+ case GSM_BAND_1800:
+ if (dbm >= 36)
+ return 29;
+ else if (dbm >= 34)
+ return 30;
+ else if (dbm >= 32)
+ return 31;
+ else if (dbm == 31)
+ return 0;
+ else {
+ /* we are guaranteed to have (0 <= dbm < 31) *
+ return (30 - dbm) / 2;
+ }
+ break;
+ case GSM_BAND_1900:
+ if (dbm >= 33)
+ return 30;
+ else if (dbm >= 32)
+ return 31;
+ else if (dbm == 31)
+ return 0;
+ else {
+ /* we are guaranteed to have (0 <= dbm < 31) *
+ return (30 - dbm) / 2;
+ }
+ break;
+ }
+ return -EINVAL;
+}
+
+/*! Convert TS 05.05 power level to absolute dBm value
+ * \param[in] band GSM frequency band
+ * \param[in] lvl TS 05.05 power control level
+ * \returns RF power level in dBm *
+int ms_pwr_dbm(enum gsm_band band, uint8_t lvl)
+{
+ lvl &= 0x1f;
+
+ switch (band) {
+ case GSM_BAND_450:
+ case GSM_BAND_480:
+ case GSM_BAND_750:
+ case GSM_BAND_900:
+ case GSM_BAND_810:
+ case GSM_BAND_850:
+ if (lvl < 2)
+ return 39;
+ else if (lvl < 20)
+ return 39 - ((lvl - 2) * 2) ;
+ else
+ return 5;
+ break;
+ case GSM_BAND_1800:
+ if (lvl < 16)
+ return 30 - (lvl * 2);
+ else if (lvl < 29)
+ return 0;
+ else
+ return 36 - ((lvl - 29) * 2);
+ break;
+ case GSM_BAND_1900:
+ if (lvl < 16)
+ return 30 - (lvl * 2);
+ else if (lvl < 30)
+ return -EINVAL;
+ else
+ return 33 - (lvl - 30);
+ break;
+ }
+ return -EINVAL;
+}
+
+/*! Convert TS 05.08 RxLev to dBm (TS 05.08 Chapter 8.1.4)
+ * \param[in] rxlev TS 05.08 RxLev value
+ * \returns Received RF power in dBm *
+int rxlev2dbm(uint8_t rxlev)
+{
+ if (rxlev > 63)
+ rxlev = 63;
+
+ return -110 + rxlev;
+}
+
+/*! Convert RF signal level in dBm to TS 05.08 RxLev (TS 05.08 Chapter 8.1.4)
+ * \param[in] dbm RF signal level in dBm
+ * \returns TS 05.08 RxLev value *
+uint8_t dbm2rxlev(int dbm)
+{
+ int rxlev = dbm + 110;
+
+ if (rxlev > 63)
+ rxlev = 63;
+ else if (rxlev < 0)
+ rxlev = 0;
+
+ return rxlev;
+}
+
+/*! Return string name of a given GSM Band */
+const char *gsm_band_name(enum gsm_band band)
+{
+ switch (band) {
+ case GSM_BAND_450:
+ return "GSM450";
+ case GSM_BAND_480:
+ return "GSM480";
+ case GSM_BAND_750:
+ return "GSM750";
+ case GSM_BAND_810:
+ return "GSM810";
+ case GSM_BAND_850:
+ return "GSM850";
+ case GSM_BAND_900:
+ return "GSM900";
+ case GSM_BAND_1800:
+ return "DCS1800";
+ case GSM_BAND_1900:
+ return "PCS1900";
+ }
+ return "invalid";
+}
+
+/*! Parse string name of a GSM band */
+enum gsm_band gsm_band_parse(const char* mhz)
+{
+ while (*mhz && !isdigit((unsigned char)*mhz))
+ mhz++;
+
+ if (*mhz == '\0')
+ return -EINVAL;
+
+ switch (strtol(mhz, NULL, 10)) {
+ case 450:
+ return GSM_BAND_450;
+ case 480:
+ return GSM_BAND_480;
+ case 750:
+ return GSM_BAND_750;
+ case 810:
+ return GSM_BAND_810;
+ case 850:
+ return GSM_BAND_850;
+ case 900:
+ return GSM_BAND_900;
+ case 1800:
+ return GSM_BAND_1800;
+ case 1900:
+ return GSM_BAND_1900;
+ default:
+ return -EINVAL;
+ }
+}
+
+/*! Resolve GSM band from ARFCN
+ * In Osmocom, we use the highest bit of the \a arfcn to indicate PCS
+ * \param[in] arfcn Osmocom ARFCN, highest bit determines PCS mode
+ * \returns GSM Band */
+enum gsm_band gsm_arfcn2band(uint16_t arfcn)
+{
+ int is_pcs = arfcn & ARFCN_PCS;
+
+ arfcn &= ~ARFCN_FLAG_MASK;
+
+ if (is_pcs)
+ return GSM_BAND_1900;
+ else if (arfcn <= 124)
+ return GSM_BAND_900;
+ else if (arfcn >= 955 && arfcn <= 1023)
+ return GSM_BAND_900;
+ else if (arfcn >= 128 && arfcn <= 251)
+ return GSM_BAND_850;
+ else if (arfcn >= 512 && arfcn <= 885)
+ return GSM_BAND_1800;
+ else if (arfcn >= 259 && arfcn <= 293)
+ return GSM_BAND_450;
+ else if (arfcn >= 306 && arfcn <= 340)
+ return GSM_BAND_480;
+ else if (arfcn >= 350 && arfcn <= 425)
+ return GSM_BAND_810;
+ else if (arfcn >= 438 && arfcn <= 511)
+ return GSM_BAND_750;
+ else
+ return GSM_BAND_1800;
+}
+
+struct gsm_freq_range {
+ uint16_t arfcn_first;
+ uint16_t arfcn_last;
+ uint16_t freq_ul_first;
+ uint16_t freq_dl_offset;
+ uint16_t flags;
+};
+
+static struct gsm_freq_range gsm_ranges[] = {
+ { 512, 810, 18502, 800, ARFCN_PCS }, /* PCS 1900 */
+ { 0, 124, 8900, 450, 0 }, /* P-GSM + E-GSM ARFCN 0 */
+ { 955, 1023, 8762, 450, 0 }, /* E-GSM + R-GSM */
+ { 128, 251, 8242, 450, 0 }, /* GSM 850 */
+ { 512, 885, 17102, 950, 0 }, /* DCS 1800 */
+ { 259, 293, 4506, 100, 0 }, /* GSM 450 */
+ { 306, 340, 4790, 100, 0 }, /* GSM 480 */
+ { 350, 425, 8060, 450, 0 }, /* GSM 810 */
+ { 438, 511, 7472, 300, 0 }, /* GSM 750 */
+ { /* Guard */ }
+};
+
+/*! Convert an ARFCN to the frequency in MHz * 10
+ * \param[in] arfcn GSM ARFCN to convert
+ * \param[in] uplink Uplink (1) or Downlink (0) frequency
+ * \returns Frequency in units of 1/10ths of MHz (100kHz) */
+uint16_t gsm_arfcn2freq10(uint16_t arfcn, int uplink)
+{
+ struct gsm_freq_range *r;
+ uint16_t flags = arfcn & ARFCN_FLAG_MASK;
+ uint16_t freq10_ul = 0xffff;
+ uint16_t freq10_dl = 0xffff;
+
+ arfcn &= ~ARFCN_FLAG_MASK;
+
+ for (r=gsm_ranges; r->freq_ul_first>0; r++) {
+ if ((flags == r->flags) &&
+ (arfcn >= r->arfcn_first) &&
+ (arfcn <= r->arfcn_last))
+ {
+ freq10_ul = r->freq_ul_first + 2 * (arfcn - r->arfcn_first);
+ freq10_dl = freq10_ul + r->freq_dl_offset;
+ break;
+ }
+ }
+
+ return uplink ? freq10_ul : freq10_dl;
+}
+
+/*! Convert a Frequency in MHz * 10 to ARFCN
+ * \param[in] freq10 Frequency in units of 1/10ths of MHz (100kHz)
+ * \param[in] uplink Frequency is Uplink (1) or Downlink (0)
+ * \returns ARFCN in case of success; 0xffff on error */
+uint16_t gsm_freq102arfcn(uint16_t freq10, int uplink)
+{
+ struct gsm_freq_range *r;
+ uint16_t freq10_lo, freq10_hi;
+ uint16_t arfcn = 0xffff;
+
+ for (r=gsm_ranges; r->freq_ul_first>0; r++) {
+ /* Generate frequency limits */
+ freq10_lo = r->freq_ul_first;
+ freq10_hi = freq10_lo + 2 * (r->arfcn_last - r->arfcn_first);
+ if (!uplink) {
+ freq10_lo += r->freq_dl_offset;
+ freq10_hi += r->freq_dl_offset;
+ }
+
+ /* Check if this fits */
+ if (freq10 >= freq10_lo && freq10 <= freq10_hi) {
+ arfcn = r->arfcn_first + ((freq10 - freq10_lo) >> 1);
+ arfcn |= r->flags;
+ break;
+ }
+ }
+
+ if (uplink)
+ arfcn |= ARFCN_UPLINK;
+
+ return arfcn;
+}
+
+/*! Parse GSM Frame Number into struct \ref gsm_time
+ * \param[out] time Caller-provided memory for \ref gsm_time
+ * \param[in] fn GSM Frame Number *
+void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn)
+{
+ time->fn = fn;
+ time->t1 = time->fn / (26*51);
+ time->t2 = time->fn % 26;
+ time->t3 = time->fn % 51;
+ time->tc = (time->fn / 51) % 8;
+}
+
+/*! Parse GSM Frame Number into printable string
+ * \param[in] fn GSM Frame Number
+ * \returns pointer to printable string *
+char *gsm_fn_as_gsmtime_str(uint32_t fn)
+{
+ struct gsm_time time;
+
+ gsm_fn2gsmtime(&time, fn);
+ return osmo_dump_gsmtime(&time);
+}
+
+/*! Encode decoded \ref gsm_time to Frame Number
+ * \param[in] time GSM Time in decoded structure
+ * \returns GSM Frame Number *
+uint32_t gsm_gsmtime2fn(struct gsm_time *time)
+{
+ /* TS 05.02 Chapter 4.3.3 TDMA frame number *
+ return (51 * ((time->t3 - time->t2 + 26) % 26) + time->t3 + (26 * 51 * time->t1));
+}
+
+char *osmo_dump_gsmtime(const struct gsm_time *tm)
+{
+ static char buf[64];
+
+ snprintf(buf, sizeof(buf), "%06"PRIu32"/%02"PRIu16"/%02"PRIu8"/%02"PRIu8"/%02"PRIu8,
+ tm->fn, tm->t1, tm->t2, tm->t3, (uint8_t)tm->fn%52);
+ buf[sizeof(buf)-1] = '\0';
+ return buf;
+}
+
+/*! append range1024 encoded data to bit vector
+ * \param[out] bv Caller-provided output bit-vector
+ * \param[in] r Input Range1024 sructure *
+void bitvec_add_range1024(struct bitvec *bv, const struct gsm48_range_1024 *r)
+{
+ bitvec_set_uint(bv, r->w1_hi, 2);
+ bitvec_set_uint(bv, r->w1_lo, 8);
+ bitvec_set_uint(bv, r->w2_hi, 8);
+ bitvec_set_uint(bv, r->w2_lo, 1);
+ bitvec_set_uint(bv, r->w3_hi, 7);
+ bitvec_set_uint(bv, r->w3_lo, 2);
+ bitvec_set_uint(bv, r->w4_hi, 6);
+ bitvec_set_uint(bv, r->w4_lo, 2);
+ bitvec_set_uint(bv, r->w5_hi, 6);
+ bitvec_set_uint(bv, r->w5_lo, 2);
+ bitvec_set_uint(bv, r->w6_hi, 6);
+ bitvec_set_uint(bv, r->w6_lo, 2);
+ bitvec_set_uint(bv, r->w7_hi, 6);
+ bitvec_set_uint(bv, r->w7_lo, 2);
+ bitvec_set_uint(bv, r->w8_hi, 6);
+ bitvec_set_uint(bv, r->w8_lo, 1);
+ bitvec_set_uint(bv, r->w9, 7);
+ bitvec_set_uint(bv, r->w10, 7);
+ bitvec_set_uint(bv, r->w11_hi, 1);
+ bitvec_set_uint(bv, r->w11_lo, 6);
+ bitvec_set_uint(bv, r->w12_hi, 2);
+ bitvec_set_uint(bv, r->w12_lo, 5);
+ bitvec_set_uint(bv, r->w13_hi, 3);
+ bitvec_set_uint(bv, r->w13_lo, 4);
+ bitvec_set_uint(bv, r->w14_hi, 4);
+ bitvec_set_uint(bv, r->w14_lo, 3);
+ bitvec_set_uint(bv, r->w15_hi, 5);
+ bitvec_set_uint(bv, r->w15_lo, 2);
+ bitvec_set_uint(bv, r->w16, 6);
+}
+
+/*! Determine GPRS TLLI Type (TS 23.003 Chapter 2.6) *
+int gprs_tlli_type(uint32_t tlli)
+{
+ if ((tlli & 0xc0000000) == 0xc0000000)
+ return TLLI_LOCAL;
+ else if ((tlli & 0xc0000000) == 0x80000000)
+ return TLLI_FOREIGN;
+ else if ((tlli & 0xf8000000) == 0x78000000)
+ return TLLI_RANDOM;
+ else if ((tlli & 0xf8000000) == 0x70000000)
+ return TLLI_AUXILIARY;
+ else if ((tlli & 0xf0000000) == 0x00000000)
+ return TLLI_G_RNTI;
+ else if ((tlli & 0xf0000000) == 0x10000000)
+ return TLLI_RAND_G_RNTI;
+
+ return TLLI_RESERVED;
+}
+
+/*! Determine TLLI from P-TMSI
+ * \param[in] p_tmsi P-TMSI
+ * \param[in] type TLLI Type we want to derive from \a p_tmsi
+ * \returns TLLI of given type *
+uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type)
+{
+ uint32_t tlli;
+ switch (type) {
+ case TLLI_LOCAL:
+ tlli = p_tmsi | 0xc0000000;
+ break;
+ case TLLI_FOREIGN:
+ tlli = (p_tmsi & 0x3fffffff) | 0x80000000;
+ break;
+ default:
+ tlli = 0;
+ break;
+ }
+ return tlli;
+}
+
+/* Wrappers for deprecated functions: *
+
+int gsm_7bit_decode(char *text, const uint8_t *user_data, uint8_t septet_l)
+{
+ gsm_7bit_decode_n(text, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE,
+ user_data, septet_l);
+
+ /* Mimic the original behaviour. *
+ return septet_l;
+}
+
+int gsm_7bit_decode_ussd(char *text, const uint8_t *user_data, uint8_t length)
+{
+ return gsm_7bit_decode_n_ussd(text, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE,
+ user_data, length);
+}
+
+int gsm_7bit_encode(uint8_t *result, const char *data)
+{
+ int out;
+ return gsm_7bit_encode_n(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE,
+ data, &out);
+}
+
+int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets)
+{
+ return gsm_7bit_encode_n_ussd(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE,
+ data, octets);
+}
+
+int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets)
+{
+ return gsm_7bit_encode_n(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE,
+ data, octets);
+}*/
diff --git a/lib/decoding/osmocom/gsm/gsm_utils.h b/lib/decoding/osmocom/gsm/gsm_utils.h
new file mode 100644
index 0000000..2cd8832
--- /dev/null
+++ b/lib/decoding/osmocom/gsm/gsm_utils.h
@@ -0,0 +1,238 @@
+/*! \file gsm_utils.h
+ * GSM utility functions, e.g. coding and decoding. */
+/*
+ * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
+ * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ *
+ * 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 as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <osmocom/core/defs.h>
+#include <osmocom/core/utils.h>
+
+#define ADD_MODULO(sum, delta, modulo) do { \
+ if ((sum += delta) >= modulo) \
+ sum -= modulo; \
+ } while (0)
+
+#define GSM_MAX_FN (26*51*2048)
+
+/* Max length of random identifier which can be requested via osmo_get_rand_id() */
+#define OSMO_MAX_RAND_ID_LEN 16
+
+//struct gsm_time {
+// uint32_t fn; /* FN count */
+// uint16_t t1; /* FN div (26*51) */
+// uint8_t t2; /* FN modulo 26 */
+// uint8_t t3; /* FN modulo 51 */
+// uint8_t tc;
+//};
+
+enum gsm_band {
+ GSM_BAND_850 = 1,
+ GSM_BAND_900 = 2,
+ GSM_BAND_1800 = 4,
+ GSM_BAND_1900 = 8,
+ GSM_BAND_450 = 0x10,
+ GSM_BAND_480 = 0x20,
+ GSM_BAND_750 = 0x40,
+ GSM_BAND_810 = 0x80,
+};
+
+const char *gsm_band_name(enum gsm_band band);
+enum gsm_band gsm_band_parse(const char *mhz);
+
+//int osmo_get_rand_id(uint8_t *out, size_t len);
+
+/*!
+ * Decode a sequence of GSM 03.38 encoded 7 bit characters.
+ *
+ * \param decoded The destination buffer for the decoded characters.
+ * \param n A maximum of n chars is written (incl. terminating \0).
+ * Requires n >= 1.
+ * \param user_data A pointer to the start of the packed 7bit character
+ * sequence.
+ * \param length The length of the input sequence in septets, for
+ * example pass octet_length*8/7.
+ *
+ * \returns the number of (8 bit) chars written excluding the terminating \0.
+ * This is the same like strlen(decoded).
+ */
+//int gsm_7bit_decode_n(char *decoded, size_t n, const uint8_t *user_data, uint8_t length);
+
+///*!
+// * Decode a sequence of 7 bit characters (USSD encoding).
+// *
+// * \see gsm_7bit_encode_n()
+// */
+//int gsm_7bit_decode_n_ussd(char *decoded, size_t n, const uint8_t *user_data, uint8_t length);
+
+///*!
+// * Encode a text string into GSM 03.38 encoded 7 bit characters.
+// *
+// * \param result The destination buffer for the packed 7 bit sequence.
+// * \param n A maximum of n octets is written.
+// * \param data A pointer to the start of the \0 terminated 8 bit character
+// * string.
+// * \param octets_written Iff not NULL, *octets_written will be set to the
+// * number of octets written to the result buffer.
+// *
+// * \returns the number of septets that have been created.
+// */
+//int gsm_7bit_encode_n(uint8_t *result, size_t n, const char *data, int *octets_written);
+
+///*!
+// * Encode a text string into GSM 03.38 encoded 7 bit characters (USSD encoding).
+// *
+// * \see gsm_7bit_decode_n()
+// */
+//int gsm_7bit_encode_n_ussd(uint8_t *result, size_t n, const char *data, int *octets_written);
+
+///* the four functions below are helper functions and here for the unit test */
+//int gsm_septets2octets(uint8_t *result, const uint8_t *rdata, uint8_t septet_len, uint8_t padding);
+//int gsm_septet_encode(uint8_t *result, const char *data);
+//uint8_t gsm_get_octet_len(const uint8_t sept_len);
+//int gsm_7bit_decode_n_hdr(char *decoded, size_t n, const uint8_t *user_data, uint8_t length, uint8_t ud_hdr_ind);
+
+//unsigned int ms_class_gmsk_dbm(enum gsm_band band, int ms_class);
+
+//int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm);
+//int ms_pwr_dbm(enum gsm_band band, uint8_t lvl);
+
+///* According to TS 05.08 Chapter 8.1.4 */
+//int rxlev2dbm(uint8_t rxlev);
+//uint8_t dbm2rxlev(int dbm);
+
+///* According to GSM 04.08 Chapter 10.5.1.6 */
+//static inline int ms_cm2_a5n_support(uint8_t *cm2, unsigned n) {
+// switch (n) {
+// case 0: return 1;
+// case 1: return (cm2[0] & (1<<3)) ? 0 : 1;
+// case 2: return (cm2[2] & (1<<0)) ? 1 : 0;
+// case 3: return (cm2[2] & (1<<1)) ? 1 : 0;
+// default:
+// return 0;
+// }
+//}
+
+///* According to GSM 04.08 Chapter 10.5.1.7 */
+//static inline int ms_cm3_a5n_support(uint8_t *cm3, unsigned n) {
+// switch (n) {
+// case 4: return (cm3[0] & (1<<0)) ? 1 : 0;
+// case 5: return (cm3[0] & (1<<1)) ? 1 : 0;
+// case 6: return (cm3[0] & (1<<2)) ? 1 : 0;
+// case 7: return (cm3[0] & (1<<3)) ? 1 : 0;
+// default:
+// return 0;
+// }
+//}
+
+///* According to GSM 04.08 Chapter 10.5.2.29 */
+//static inline int rach_max_trans_val2raw(int val) { return (val >> 1) & 3; }
+//static inline int rach_max_trans_raw2val(int raw) {
+// const int tbl[4] = { 1, 2, 4, 7 };
+// return tbl[raw & 3];
+//}
+
+#define ARFCN_PCS 0x8000
+#define ARFCN_UPLINK 0x4000
+#define ARFCN_FLAG_MASK 0xf000 /* Reserve the upper 5 bits for flags */
+
+enum gsm_band gsm_arfcn2band(uint16_t arfcn);
+
+/* Convert an ARFCN to the frequency in MHz * 10 */
+uint16_t gsm_arfcn2freq10(uint16_t arfcn, int uplink);
+
+/* Convert a Frequency in MHz * 10 to ARFCN */
+uint16_t gsm_freq102arfcn(uint16_t freq10, int uplink);
+
+/* Convert from frame number to GSM time */
+//void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn);
+
+/* Parse GSM Frame Number into printable string */
+//char *gsm_fn_as_gsmtime_str(uint32_t fn);
+
+/* Convert from GSM time to frame number */
+//uint32_t gsm_gsmtime2fn(struct gsm_time *time);
+
+/* Returns static buffer with string representation of a GSM Time */
+//char *osmo_dump_gsmtime(const struct gsm_time *tm);
+
+/* GSM TS 03.03 Chapter 2.6 */
+//enum gprs_tlli_type {
+// TLLI_LOCAL,
+// TLLI_FOREIGN,
+// TLLI_RANDOM,
+// TLLI_AUXILIARY,
+// TLLI_RESERVED,
+// TLLI_G_RNTI,
+// TLLI_RAND_G_RNTI,
+//};
+
+/* TS 03.03 Chapter 2.6 */
+//int gprs_tlli_type(uint32_t tlli);
+
+//uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type);
+
+///* Osmocom internal, not part of any gsm spec */
+//enum gsm_phys_chan_config {
+// GSM_PCHAN_NONE,
+// GSM_PCHAN_CCCH,
+// GSM_PCHAN_CCCH_SDCCH4,
+// GSM_PCHAN_TCH_F,
+// GSM_PCHAN_TCH_H,
+// GSM_PCHAN_SDCCH8_SACCH8C,
+// GSM_PCHAN_PDCH, /* GPRS PDCH */
+// GSM_PCHAN_TCH_F_PDCH, /* TCH/F if used, PDCH otherwise */
+// GSM_PCHAN_UNKNOWN,
+// GSM_PCHAN_CCCH_SDCCH4_CBCH,
+// GSM_PCHAN_SDCCH8_SACCH8C_CBCH,
+// GSM_PCHAN_TCH_F_TCH_H_PDCH,
+// _GSM_PCHAN_MAX
+//};
+
+///* Osmocom internal, not part of any gsm spec */
+//enum gsm_chan_t {
+// GSM_LCHAN_NONE,
+// GSM_LCHAN_SDCCH,
+// GSM_LCHAN_TCH_F,
+// GSM_LCHAN_TCH_H,
+// GSM_LCHAN_UNKNOWN,
+// GSM_LCHAN_CCCH,
+// GSM_LCHAN_PDTCH,
+// GSM_LCHAN_CBCH,
+// _GSM_LCHAN_MAX
+//};
+
+//extern const struct value_string gsm_chan_t_names[];
+
+///* Deprectated functions */
+///* Limit encoding and decoding to use no more than this amount of buffer bytes */
+//#define GSM_7BIT_LEGACY_MAX_BUFFER_SIZE 0x10000
+
+//int gsm_7bit_decode(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n() instead");
+//int gsm_7bit_decode_ussd(char *decoded, const uint8_t *user_data, uint8_t length) OSMO_DEPRECATED("Use gsm_7bit_decode_n_ussd() instead");
+//int gsm_7bit_encode(uint8_t *result, const char *data) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");
+//int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n_ussd() instead");
+//int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");