abis: Create a routine that can parse all SW Descriptions of a SW Config
Be able to parse the entire SW Config IE. Parse the SW Descruption into a struct provided by the caller.
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c751cf92cb
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bce5675e5f
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@ -58,6 +58,7 @@ tests/sccp/sccp_test
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tests/sms/sms_test
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tests/timer/timer_test
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tests/gprs/gprs_test
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tests/abis/abis_test
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tests/atconfig
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tests/atlocal
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@ -151,6 +151,7 @@ AC_OUTPUT(
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tests/mgcp/Makefile
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tests/gprs/Makefile
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tests/si/Makefile
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tests/abis/Makefile
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doc/Makefile
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doc/examples/Makefile
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Makefile)
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@ -66,6 +66,18 @@ struct abis_nm_cfg {
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int (*sw_act_req)(struct msgb *);
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};
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struct abis_nm_sw_descr {
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/* where does it start? how long is it? */
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const uint8_t *start;
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size_t len;
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/* the parsed data */
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const uint8_t *file_id;
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uint16_t file_id_len;
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const uint8_t *file_ver;
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uint16_t file_ver_len;
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};
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extern int abis_nm_rcvmsg(struct msgb *msg);
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int abis_nm_tlv_parse(struct tlv_parsed *tp, struct gsm_bts *bts, const uint8_t *buf, int len);
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@ -167,4 +179,7 @@ int _abis_nm_sendmsg(struct msgb *msg);
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void abis_nm_queue_send_next(struct gsm_bts *bts); /* for bs11_config. */
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int abis_nm_parse_sw_config(const uint8_t *data, const size_t len,
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struct abis_nm_sw_descr *res, const int res_len);
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#endif /* _NM_H */
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@ -359,7 +359,8 @@ static int ipacc_sw_activate(struct gsm_bts *bts, uint8_t obj_class, uint8_t i0,
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return abis_nm_sendmsg(bts, msg);
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}
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static int abis_nm_parse_sw_descr(const uint8_t *sw_descr, int sw_descr_len)
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int abis_nm_parse_sw_config(const uint8_t *sw_descr, const size_t sw_descr_len,
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struct abis_nm_sw_descr *desc, const int res_len)
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{
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static const struct tlv_definition sw_descr_def = {
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.def = {
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@ -368,38 +369,56 @@ static int abis_nm_parse_sw_descr(const uint8_t *sw_descr, int sw_descr_len)
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},
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};
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uint8_t tag;
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uint16_t tag_len;
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const uint8_t *val;
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int ofs = 0, len;
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size_t pos = 0;
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int desc_pos = 0;
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/* Classic TLV parsing doesn't work well with SW_DESCR because of it's
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* nested nature and the fact you have to assume it contains only two sub
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* tags NM_ATT_FILE_VERSION & NM_ATT_FILE_ID to parse it */
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for (pos = 0; pos < sw_descr_len && desc_pos < res_len; ++desc_pos) {
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uint8_t tag;
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uint16_t tag_len;
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const uint8_t *val;
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int len;
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if (sw_descr[0] != NM_ATT_SW_DESCR) {
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DEBUGP(DNM, "SW_DESCR attribute identifier not found!\n");
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return -1;
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memset(&desc[desc_pos], 0, sizeof(desc[desc_pos]));
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desc[desc_pos].start = &sw_descr[pos];
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/* Classic TLV parsing doesn't work well with SW_DESCR because of it's
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* nested nature and the fact you have to assume it contains only two sub
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* tags NM_ATT_FILE_VERSION & NM_ATT_FILE_ID to parse it */
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if (sw_descr[pos] != NM_ATT_SW_DESCR) {
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LOGP(DNM, LOGL_ERROR,
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"SW_DESCR attribute identifier not found!\n");
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return -1;
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}
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pos += 1;
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len = tlv_parse_one(&tag, &tag_len, &val,
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&sw_descr_def, &sw_descr[pos], sw_descr_len - pos);
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if (len < 0 || (tag != NM_ATT_FILE_ID)) {
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LOGP(DNM, LOGL_ERROR,
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"FILE_ID attribute identifier not found!\n");
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return -2;
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}
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desc[desc_pos].file_id = val;
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desc[desc_pos].file_id_len = tag_len;
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pos += len;
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len = tlv_parse_one(&tag, &tag_len, &val,
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&sw_descr_def, &sw_descr[pos], sw_descr_len - pos);
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if (len < 0 || (tag != NM_ATT_FILE_VERSION)) {
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LOGP(DNM, LOGL_ERROR,
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"FILE_VERSION attribute identifier not found!\n");
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return -3;
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}
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desc[desc_pos].file_ver = val;
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desc[desc_pos].file_ver_len = tag_len;
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pos += len;
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/* final size */
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desc[desc_pos].len = &sw_descr[pos] - desc[desc_pos].start;
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}
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ofs += 1;
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len = tlv_parse_one(&tag, &tag_len, &val,
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&sw_descr_def, &sw_descr[ofs], sw_descr_len-ofs);
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if (len < 0 || (tag != NM_ATT_FILE_ID)) {
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DEBUGP(DNM, "FILE_ID attribute identifier not found!\n");
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return -2;
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}
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ofs += len;
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len = tlv_parse_one(&tag, &tag_len, &val,
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&sw_descr_def, &sw_descr[ofs], sw_descr_len-ofs);
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if (len < 0 || (tag != NM_ATT_FILE_VERSION)) {
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DEBUGP(DNM, "FILE_VERSION attribute identifier not found!\n");
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return -3;
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}
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ofs += len;
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return ofs;
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return desc_pos;
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}
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static int abis_nm_rx_sw_act_req(struct msgb *mb)
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@ -409,7 +428,8 @@ static int abis_nm_rx_sw_act_req(struct msgb *mb)
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struct e1inp_sign_link *sign_link = mb->dst;
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struct tlv_parsed tp;
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const uint8_t *sw_config;
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int ret, sw_config_len, sw_descr_len;
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int ret, sw_config_len;
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struct abis_nm_sw_descr sw_descr[1];
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abis_nm_debugp_foh(DNM, foh);
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@ -439,16 +459,19 @@ static int abis_nm_rx_sw_act_req(struct msgb *mb)
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DEBUGP(DNM, "Found SW config: %s\n", osmo_hexdump(sw_config, sw_config_len));
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}
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/* Use the first SW_DESCR present in SW config */
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sw_descr_len = abis_nm_parse_sw_descr(sw_config, sw_config_len);
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if (sw_descr_len < 0)
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/* Parse up to two sw descriptions from the data */
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ret = abis_nm_parse_sw_config(sw_config, sw_config_len,
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&sw_descr[0], ARRAY_SIZE(sw_descr));
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if (ret <= 0) {
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LOGP(DNM, LOGL_ERROR, "Failed to parse SW Config.\n");
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return -EINVAL;
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}
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return ipacc_sw_activate(sign_link->trx->bts, foh->obj_class,
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foh->obj_inst.bts_nr,
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foh->obj_inst.trx_nr,
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foh->obj_inst.ts_nr,
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sw_config, sw_descr_len);
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sw_descr[0].start, sw_descr[0].len);
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}
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/* Receive a CHANGE_ADM_STATE_ACK, parse the TLV and update local state */
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@ -1,4 +1,4 @@
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SUBDIRS = gsm0408 db channel mgcp gprs si
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SUBDIRS = gsm0408 db channel mgcp gprs si abis
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if BUILD_NAT
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SUBDIRS += bsc-nat
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@ -0,0 +1,17 @@
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INCLUDES = $(all_includes) -I$(top_srcdir)/include
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AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(LIBOSMOABIS_CFLAGS) \
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$(LIBOSMOGSM_CFLAGS) $(COVERAGE_CFLAGS)
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EXTRA_DIST = abis_test.ok
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noinst_PROGRAMS = abis_test
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abis_test_SOURCES = abis_test.c
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abis_test_LDADD = \
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$(top_builddir)/src/libbsc/libbsc.a \
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$(top_builddir)/src/libcommon/libcommon.a \
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$(top_builddir)/src/libbsc/libbsc.a \
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$(top_builddir)/src/libtrau/libtrau.a \
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$(LIBOSMOCORE_LIBS) $(LIBOSMOABIS_LIBS) \
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$(LIBOSMOGSM_LIBS)
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@ -0,0 +1,118 @@
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/*
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* (C) 2012 by Holger Hans Peter Freyther <zecke@selfish.org>
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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 Affero General Public License as published by
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* the Free Software Foundation; either version 3 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 Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/utils.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/abis_nm.h>
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#include <openbsc/debug.h>
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static const uint8_t simple_config[] = {
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/*0, 13, */
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66, 18, 0, 3, 1, 2, 3, 19, 0, 3, 3, 4, 5,
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};
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static const uint8_t dual_config[] = {
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/*0, 26, */
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66, 18, 0, 3, 1, 2, 3, 19, 0, 3, 3, 4, 5,
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66, 18, 0, 3, 9, 7, 5, 19, 0, 3, 6, 7, 8,
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};
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static void test_simple_sw_config(void)
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{
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struct abis_nm_sw_descr descr[1];
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int rc;
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rc = abis_nm_parse_sw_config(simple_config, ARRAY_SIZE(simple_config),
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&descr[0], ARRAY_SIZE(descr));
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if (rc != 1) {
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printf("FAILED to parse the File Id/File version\n");
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abort();
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}
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if (descr[0].len != 13) {
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printf("WRONG SIZE: %d\n", descr[0].len);
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abort();
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}
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printf("Start: %u len: %zu\n", descr[0].start - simple_config, descr[0].len);
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printf("file_id: %s\n", osmo_hexdump(descr[0].file_id, descr[0].file_id_len));
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printf("file_ver: %s\n", osmo_hexdump(descr[0].file_ver, descr[0].file_ver_len));
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}
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static void test_simple_sw_short(void)
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{
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struct abis_nm_sw_descr descr[1];
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int i;
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for (i = 1; i < ARRAY_SIZE(simple_config); ++i) {
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int rc = abis_nm_parse_sw_config(simple_config,
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ARRAY_SIZE(simple_config) - i, &descr[0],
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ARRAY_SIZE(descr));
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if (rc >= 1) {
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printf("SHOULD not have parsed: %d\n", rc);
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abort();
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}
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}
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}
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static void test_dual_sw_config(void)
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{
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struct abis_nm_sw_descr descr[2];
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int rc;
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rc = abis_nm_parse_sw_config(dual_config, ARRAY_SIZE(dual_config),
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&descr[0], ARRAY_SIZE(descr));
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if (rc != 2) {
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printf("FAILED to parse the File Id/File version\n");
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abort();
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}
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if (descr[0].len != 13) {
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printf("WRONG SIZE0: %d\n", descr[0].len);
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abort();
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}
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if (descr[1].len != 13) {
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printf("WRONG SIZE1: %d\n", descr[1].len);
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abort();
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}
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printf("Start: %u len: %zu\n", descr[0].start - dual_config, descr[0].len);
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printf("file_id: %s\n", osmo_hexdump(descr[0].file_id, descr[0].file_id_len));
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printf("file_ver: %s\n", osmo_hexdump(descr[0].file_ver, descr[0].file_ver_len));
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printf("Start: %u len: %zu\n", descr[1].start - dual_config, descr[1].len);
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printf("file_id: %s\n", osmo_hexdump(descr[1].file_id, descr[1].file_id_len));
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printf("file_ver: %s\n", osmo_hexdump(descr[1].file_ver, descr[1].file_ver_len));
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}
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int main(int argc, char **argv)
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{
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osmo_init_logging(&log_info);
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test_simple_sw_config();
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test_simple_sw_short();
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test_dual_sw_config();
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return EXIT_SUCCESS;
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}
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@ -0,0 +1,9 @@
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Start: 0 len: 13
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file_id: 01 02 03
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file_ver: 03 04 05
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Start: 13 len: 26
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file_id: 01 02 03
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file_ver: 03 04 05
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Start: 26 len: 13
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file_id: 09 07 05
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file_ver: 06 07 08
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@ -43,3 +43,9 @@ AT_KEYWORDS([si])
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cat $abs_srcdir/si/si_test.ok > expout
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AT_CHECK([$abs_top_builddir/tests/si/si_test], [], [expout], [ignore])
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AT_CLEANUP
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AT_SETUP([abis])
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AT_KEYWORDS([abis])
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cat $abs_srcdir/abis/abis_test.ok > expout
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AT_CHECK([$abs_top_builddir/tests/abis/abis_test], [], [expout], [ignore])
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AT_CLEANUP
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