diff options
Diffstat (limited to 'src/gsm')
| -rw-r--r-- | src/gsm/Makefile.am | 2 | ||||
| -rw-r--r-- | src/gsm/sysinfo.c | 131 |
2 files changed, 132 insertions, 1 deletions
diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am index 94f137e2..55b772f1 100644 --- a/src/gsm/Makefile.am +++ b/src/gsm/Makefile.am @@ -8,7 +8,7 @@ AM_CFLAGS = -fPIC -Wall lib_LTLIBRARIES = libosmogsm.la libosmogsm_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c gsm_utils.c \ - rsl.c gsm48.c gsm48_ie.c gsm0808.c \ + rsl.c gsm48.c gsm48_ie.c gsm0808.c sysinfo.c \ gprs_cipher_core.c gsm0480.c abis_nm.c libosmogsm_la_LDFLAGS = -version-info $(LIBVERSION) libosmogsm_la_LIBADD = $(top_builddir)/src/libosmocore.la diff --git a/src/gsm/sysinfo.c b/src/gsm/sysinfo.c new file mode 100644 index 00000000..0dbff3ae --- /dev/null +++ b/src/gsm/sysinfo.c @@ -0,0 +1,131 @@ +/* GSM 04.08 System Information (SI) encoding and decoding + * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */ + +/* (C) 2008-2010 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, see <http://www.gnu.org/licenses/>. + * + */ + +#include <errno.h> +#include <string.h> +#include <stdio.h> +#include <netinet/in.h> + +#include <osmocom/core/bitvec.h> +#include <osmocom/core/utils.h> +#include <osmocom/gsm/sysinfo.h> +#include <osmocom/gsm/protocol/gsm_04_08.h> +#include <osmocom/gsm/protocol/gsm_08_58.h> + +/* verify the sizes of the system information type structs */ + +/* rest octets are not part of the struct */ +osmo_static_assert(sizeof(struct gsm48_system_information_type_header) == 3, _si_header_size); +osmo_static_assert(sizeof(struct gsm48_rach_control) == 3, _si_rach_control); +osmo_static_assert(sizeof(struct gsm48_system_information_type_1) == 22, _si1_size); +osmo_static_assert(sizeof(struct gsm48_system_information_type_2) == 23, _si2_size); +osmo_static_assert(sizeof(struct gsm48_system_information_type_3) == 19, _si3_size); +osmo_static_assert(sizeof(struct gsm48_system_information_type_4) == 13, _si4_size); + +/* bs11 forgot the l2 len, 0-6 rest octets */ +osmo_static_assert(sizeof(struct gsm48_system_information_type_5) == 18, _si5_size); +osmo_static_assert(sizeof(struct gsm48_system_information_type_6) == 11, _si6_size); + +osmo_static_assert(sizeof(struct gsm48_system_information_type_13) == 3, _si13_size); + +static const uint8_t sitype2rsl[_MAX_SYSINFO_TYPE] = { + [SYSINFO_TYPE_1] = RSL_SYSTEM_INFO_1, + [SYSINFO_TYPE_2] = RSL_SYSTEM_INFO_2, + [SYSINFO_TYPE_3] = RSL_SYSTEM_INFO_3, + [SYSINFO_TYPE_4] = RSL_SYSTEM_INFO_4, + [SYSINFO_TYPE_5] = RSL_SYSTEM_INFO_5, + [SYSINFO_TYPE_6] = RSL_SYSTEM_INFO_6, + [SYSINFO_TYPE_7] = RSL_SYSTEM_INFO_7, + [SYSINFO_TYPE_8] = RSL_SYSTEM_INFO_8, + [SYSINFO_TYPE_9] = RSL_SYSTEM_INFO_9, + [SYSINFO_TYPE_10] = RSL_SYSTEM_INFO_10, + [SYSINFO_TYPE_13] = RSL_SYSTEM_INFO_13, + [SYSINFO_TYPE_16] = RSL_SYSTEM_INFO_16, + [SYSINFO_TYPE_17] = RSL_SYSTEM_INFO_17, + [SYSINFO_TYPE_18] = RSL_SYSTEM_INFO_18, + [SYSINFO_TYPE_19] = RSL_SYSTEM_INFO_19, + [SYSINFO_TYPE_20] = RSL_SYSTEM_INFO_20, + [SYSINFO_TYPE_2bis] = RSL_SYSTEM_INFO_2bis, + [SYSINFO_TYPE_2ter] = RSL_SYSTEM_INFO_2ter, + [SYSINFO_TYPE_2quater] = RSL_SYSTEM_INFO_2quater, + [SYSINFO_TYPE_5bis] = RSL_SYSTEM_INFO_5bis, + [SYSINFO_TYPE_5ter] = RSL_SYSTEM_INFO_5ter, +}; + +static const uint8_t rsl2sitype[0xff] = { + [RSL_SYSTEM_INFO_1] = SYSINFO_TYPE_1, + [RSL_SYSTEM_INFO_2] = SYSINFO_TYPE_2, + [RSL_SYSTEM_INFO_3] = SYSINFO_TYPE_3, + [RSL_SYSTEM_INFO_4] = SYSINFO_TYPE_4, + [RSL_SYSTEM_INFO_5] = SYSINFO_TYPE_5, + [RSL_SYSTEM_INFO_6] = SYSINFO_TYPE_6, + [RSL_SYSTEM_INFO_7] = SYSINFO_TYPE_7, + [RSL_SYSTEM_INFO_8] = SYSINFO_TYPE_8, + [RSL_SYSTEM_INFO_9] = SYSINFO_TYPE_9, + [RSL_SYSTEM_INFO_10] = SYSINFO_TYPE_10, + [RSL_SYSTEM_INFO_13] = SYSINFO_TYPE_13, + [RSL_SYSTEM_INFO_16] = SYSINFO_TYPE_16, + [RSL_SYSTEM_INFO_17] = SYSINFO_TYPE_17, + [RSL_SYSTEM_INFO_18] = SYSINFO_TYPE_18, + [RSL_SYSTEM_INFO_19] = SYSINFO_TYPE_19, + [RSL_SYSTEM_INFO_20] = SYSINFO_TYPE_20, + [RSL_SYSTEM_INFO_2bis] = SYSINFO_TYPE_2bis, + [RSL_SYSTEM_INFO_2ter] = SYSINFO_TYPE_2ter, + [RSL_SYSTEM_INFO_2quater] = SYSINFO_TYPE_2quater, + [RSL_SYSTEM_INFO_5bis] = SYSINFO_TYPE_5bis, + [RSL_SYSTEM_INFO_5ter] = SYSINFO_TYPE_5ter, +}; + +const struct value_string osmo_sitype_strs[_MAX_SYSINFO_TYPE] = { + { SYSINFO_TYPE_1, "1" }, + { SYSINFO_TYPE_2, "2" }, + { SYSINFO_TYPE_3, "3" }, + { SYSINFO_TYPE_4, "4" }, + { SYSINFO_TYPE_5, "5" }, + { SYSINFO_TYPE_6, "6" }, + { SYSINFO_TYPE_7, "7" }, + { SYSINFO_TYPE_8, "8" }, + { SYSINFO_TYPE_9, "9" }, + { SYSINFO_TYPE_10, "10" }, + { SYSINFO_TYPE_13, "13" }, + { SYSINFO_TYPE_16, "16" }, + { SYSINFO_TYPE_17, "17" }, + { SYSINFO_TYPE_18, "18" }, + { SYSINFO_TYPE_19, "19" }, + { SYSINFO_TYPE_20, "20" }, + { SYSINFO_TYPE_2bis, "2bis" }, + { SYSINFO_TYPE_2ter, "2ter" }, + { SYSINFO_TYPE_2quater, "2quater" }, + { SYSINFO_TYPE_5bis, "5bis" }, + { SYSINFO_TYPE_5ter, "5ter" }, + { 0, NULL } +}; + +uint8_t osmo_sitype2rsl(enum osmo_sysinfo_type si_type) +{ + return sitype2rsl[si_type]; +} + +enum osmo_sysinfo_type osmo_rsl2sitype(uint8_t rsl_si) +{ + return rsl2sitype[rsl_si]; +} |