[utils] Create gsm_utils for 7bit encoding and decoding...
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9e783318b0
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@ -1,4 +1,5 @@
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noinst_HEADERS = abis_nm.h abis_rsl.h debug.h db.h gsm_04_08.h gsm_data.h \
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gsm_subscriber.h linuxlist.h msgb.h select.h tlv.h gsm_04_11.h \
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timer.h misdn.h chan_alloc.h telnet_interface.h paging.h \
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subchan_demux.h trau_frame.h e1_input.h trau_mux.h signal.h
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subchan_demux.h trau_frame.h e1_input.h trau_mux.h signal.h \
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gsm_utils.h
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/* GSM utility functions, e.g. coding and decoding */
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/*
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* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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*
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* 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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef GSM_UTILS_H
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#define GSM_UTILS_H
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#include <sys/types.h>
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char *gsm_7bit_decode(u_int8_t *user_data, u_int8_t length);
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u_int8_t *gsm_7bit_encode(char *data);
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#endif
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@ -7,7 +7,7 @@ bsc_hack_SOURCES = bsc_hack.c abis_rsl.c abis_nm.c gsm_04_08.c gsm_data.c \
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gsm_subscriber.c msgb.c select.c chan_alloc.c timer.c debug.c db.c \
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gsm_04_11.c telnet_interface.c telnet_parser.l subchan_demux.c \
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trau_frame.c trau_mux.c paging.c e1_config.c e1_input.c tlv_parser.c \
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input/misdn.c input/ipaccess.c signal.c
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input/misdn.c input/ipaccess.c signal.c gsm_utils.c
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bsc_hack_LDADD = -ldl -ldbi
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bs11_config_SOURCES = bs11_config.c abis_nm.c gsm_data.c msgb.c debug.c select.c timer.c rs232.c
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@ -35,6 +35,7 @@
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#include <openbsc/gsm_subscriber.h>
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#include <openbsc/gsm_04_11.h>
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#include <openbsc/gsm_04_08.h>
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#include <openbsc/gsm_utils.h>
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#include <openbsc/abis_rsl.h>
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#include <openbsc/signal.h>
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@ -56,23 +57,6 @@ int gsm0411_sendmsg(struct msgb *msg)
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return rsl_data_request(msg, 0);
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}
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static char *gsm411_7bit_decode(u_int8_t *user_data, u_int8_t length)
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{
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u_int8_t d_off = 0, b_off = 0;
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u_int8_t i;
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char *text = malloc(length+1);
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for (i=0;i<length;i++) {
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text[i] = ((user_data[d_off] + (user_data[d_off+1]<<8)) & (0x7f<<b_off))>>b_off;
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b_off += 7;
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if (b_off >= 8) {
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d_off += 1;
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b_off -= 8;
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}
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}
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text[i] = 0;
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return text;
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}
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#if 0
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static u_int8_t gsm0411_tpdu_from_sms(u_int8_t *tpdu, struct sms_deliver *sms)
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@ -112,7 +96,7 @@ static int gsm411_sms_submit_from_msgb(struct msgb *msg)
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}
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sms->ud_len = *smsp++;
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sms->user_data = (u_int8_t *)gsm411_7bit_decode(smsp, sms->ud_len);
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sms->user_data = (u_int8_t *)gsm_7bit_decode(smsp, sms->ud_len);
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DEBUGP(DSMS, "SMS:\nMTI: 0x%02x, VPF: 0x%02x, MR: 0x%02x\n"
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"PID: 0x%02x, DCS: 0x%02x, UserDataLength: 0x%02x\n"
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@ -0,0 +1,42 @@
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/*
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* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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*
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* 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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <openbsc/gsm_utils.h>
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#include <malloc.h>
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char *gsm_7bit_decode(u_int8_t *user_data, u_int8_t length)
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{
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u_int8_t d_off = 0, b_off = 0;
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u_int8_t i;
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char *text = malloc(length+1);
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for (i=0;i<length;i++) {
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text[i] = ((user_data[d_off] + (user_data[d_off+1]<<8)) & (0x7f<<b_off))>>b_off;
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b_off += 7;
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if (b_off >= 8) {
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d_off += 1;
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b_off -= 8;
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}
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}
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text[i] = 0;
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return text;
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}
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