| /* GSM Mobile Radio Interface Layer 3 messages |
| * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */ |
| |
| /* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org> |
| * (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.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. |
| * |
| */ |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <arpa/inet.h> |
| |
| #include <osmocore/utils.h> |
| #include <osmocore/tlv.h> |
| #include <osmocore/gsm48.h> |
| |
| #include <osmocore/protocol/gsm_04_08.h> |
| |
| const struct tlv_definition gsm48_att_tlvdef = { |
| .def = { |
| [GSM48_IE_MOBILE_ID] = { TLV_TYPE_TLV }, |
| [GSM48_IE_NAME_LONG] = { TLV_TYPE_TLV }, |
| [GSM48_IE_NAME_SHORT] = { TLV_TYPE_TLV }, |
| [GSM48_IE_UTC] = { TLV_TYPE_TV }, |
| [GSM48_IE_NET_TIME_TZ] = { TLV_TYPE_FIXED, 7 }, |
| [GSM48_IE_LSA_IDENT] = { TLV_TYPE_TLV }, |
| |
| [GSM48_IE_BEARER_CAP] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CAUSE] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CC_CAP] = { TLV_TYPE_TLV }, |
| [GSM48_IE_ALERT] = { TLV_TYPE_TLV }, |
| [GSM48_IE_FACILITY] = { TLV_TYPE_TLV }, |
| [GSM48_IE_PROGR_IND] = { TLV_TYPE_TLV }, |
| [GSM48_IE_AUX_STATUS] = { TLV_TYPE_TLV }, |
| [GSM48_IE_NOTIFY] = { TLV_TYPE_TV }, |
| [GSM48_IE_KPD_FACILITY] = { TLV_TYPE_TV }, |
| [GSM48_IE_SIGNAL] = { TLV_TYPE_TV }, |
| [GSM48_IE_CONN_BCD] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CONN_SUB] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CALLING_BCD] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CALLING_SUB] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CALLED_BCD] = { TLV_TYPE_TLV }, |
| [GSM48_IE_CALLED_SUB] = { TLV_TYPE_TLV }, |
| [GSM48_IE_REDIR_BCD] = { TLV_TYPE_TLV }, |
| [GSM48_IE_REDIR_SUB] = { TLV_TYPE_TLV }, |
| [GSM48_IE_LOWL_COMPAT] = { TLV_TYPE_TLV }, |
| [GSM48_IE_HIGHL_COMPAT] = { TLV_TYPE_TLV }, |
| [GSM48_IE_USER_USER] = { TLV_TYPE_TLV }, |
| [GSM48_IE_SS_VERS] = { TLV_TYPE_TLV }, |
| [GSM48_IE_MORE_DATA] = { TLV_TYPE_T }, |
| [GSM48_IE_CLIR_SUPP] = { TLV_TYPE_T }, |
| [GSM48_IE_CLIR_INVOC] = { TLV_TYPE_T }, |
| [GSM48_IE_REV_C_SETUP] = { TLV_TYPE_T }, |
| [GSM48_IE_REPEAT_CIR] = { TLV_TYPE_T }, |
| [GSM48_IE_REPEAT_SEQ] = { TLV_TYPE_T }, |
| /* FIXME: more elements */ |
| }, |
| }; |
| |
| static const char *rr_cause_names[] = { |
| [GSM48_RR_CAUSE_NORMAL] = "Normal event", |
| [GSM48_RR_CAUSE_ABNORMAL_UNSPEC] = "Abnormal release, unspecified", |
| [GSM48_RR_CAUSE_ABNORMAL_UNACCT] = "Abnormal release, channel unacceptable", |
| [GSM48_RR_CAUSE_ABNORMAL_TIMER] = "Abnormal release, timer expired", |
| [GSM48_RR_CAUSE_ABNORMAL_NOACT] = "Abnormal release, no activity on radio path", |
| [GSM48_RR_CAUSE_PREMPTIVE_REL] = "Preemptive release", |
| [GSM48_RR_CAUSE_HNDOVER_IMP] = "Handover impossible, timing advance out of range", |
| [GSM48_RR_CAUSE_CHAN_MODE_UNACCT] = "Channel mode unacceptable", |
| [GSM48_RR_CAUSE_FREQ_NOT_IMPL] = "Frequency not implemented", |
| [GSM48_RR_CAUSE_CALL_CLEARED] = "Call already cleared", |
| [GSM48_RR_CAUSE_SEMANT_INCORR] = "Semantically incorrect message", |
| [GSM48_RR_CAUSE_INVALID_MAND_INF] = "Invalid mandatory information", |
| [GSM48_RR_CAUSE_MSG_TYPE_N] = "Message type non-existant or not implemented", |
| [GSM48_RR_CAUSE_MSG_TYPE_N_COMPAT] = "Message type not compatible with protocol state", |
| [GSM48_RR_CAUSE_COND_IE_ERROR] = "Conditional IE error", |
| [GSM48_RR_CAUSE_NO_CELL_ALLOC_A] = "No cell allocation available", |
| [GSM48_RR_CAUSE_PROT_ERROR_UNSPC] = "Protocol error unspecified", |
| }; |
| |
| const char *cc_state_names[32] = { |
| "NULL", |
| "INITIATED", |
| "illegal state 2", |
| "MO_CALL_PROC", |
| "CALL_DELIVERED", |
| "illegal state 5", |
| "CALL_PRESENT", |
| "CALL_RECEIVED", |
| "CONNECT_REQUEST", |
| "MO_TERM_CALL_CONF", |
| "ACTIVE", |
| "DISCONNECT_REQ", |
| "DISCONNECT_IND", |
| "illegal state 13", |
| "illegal state 14", |
| "illegal state 15", |
| "illegal state 16", |
| "illegal state 17", |
| "illegal state 18", |
| "RELEASE_REQ", |
| "illegal state 20", |
| "illegal state 21", |
| "illegal state 22", |
| "illegal state 23", |
| "illegal state 24", |
| "illegal state 25", |
| "MO_ORIG_MODIFY", |
| "MO_TERM_MODIFY", |
| "CONNECT_IND", |
| "illegal state 29", |
| "illegal state 30", |
| "illegal state 31", |
| }; |
| |
| const char *gsm48_cc_msg_names[0x40] = { |
| "unknown 0x00", |
| "ALERTING", |
| "CALL_PROC", |
| "PROGRESS", |
| "ESTAB", |
| "SETUP", |
| "ESTAB_CONF", |
| "CONNECT", |
| "CALL_CONF", |
| "START_CC", |
| "unknown 0x0a", |
| "RECALL", |
| "unknown 0x0c", |
| "unknown 0x0d", |
| "EMERG_SETUP", |
| "CONNECT_ACK", |
| "USER_INFO", |
| "unknown 0x11", |
| "unknown 0x12", |
| "MODIFY_REJECT", |
| "unknown 0x14", |
| "unknown 0x15", |
| "unknown 0x16", |
| "MODIFY", |
| "HOLD", |
| "HOLD_ACK", |
| "HOLD_REJ", |
| "unknown 0x1b", |
| "RETR", |
| "RETR_ACK", |
| "RETR_REJ", |
| "MODIFY_COMPL", |
| "unknown 0x20", |
| "unknown 0x21", |
| "unknown 0x22", |
| "unknown 0x23", |
| "unknown 0x24", |
| "DISCONNECT", |
| "unknown 0x26", |
| "unknown 0x27", |
| "unknown 0x28", |
| "unknown 0x29", |
| "RELEASE_COMPL", |
| "unknown 0x2b", |
| "unknown 0x2c", |
| "RELEASE", |
| "unknown 0x2e", |
| "unknown 0x2f", |
| "unknown 0x30", |
| "STOP_DTMF", |
| "STOP_DTMF_ACK", |
| "unknown 0x33", |
| "STATUS_ENQ", |
| "START_DTMF", |
| "START_DTMF_ACK", |
| "START_DTMF_REJ", |
| "unknown 0x38", |
| "CONG_CTRL", |
| "FACILITY", |
| "unknown 0x3b", |
| "STATUS", |
| "unknown 0x3d", |
| "NOTIFY", |
| "unknown 0x3f", |
| }; |
| |
| static char strbuf[64]; |
| |
| const char *rr_cause_name(uint8_t cause) |
| { |
| if (cause < ARRAY_SIZE(rr_cause_names) && |
| rr_cause_names[cause]) |
| return rr_cause_names[cause]; |
| |
| snprintf(strbuf, sizeof(strbuf), "0x%02x", cause); |
| return strbuf; |
| } |
| |
| static void to_bcd(uint8_t *bcd, uint16_t val) |
| { |
| bcd[2] = val % 10; |
| val = val / 10; |
| bcd[1] = val % 10; |
| val = val / 10; |
| bcd[0] = val % 10; |
| val = val / 10; |
| } |
| |
| void gsm48_generate_lai(struct gsm48_loc_area_id *lai48, uint16_t mcc, |
| uint16_t mnc, uint16_t lac) |
| { |
| uint8_t bcd[3]; |
| |
| to_bcd(bcd, mcc); |
| lai48->digits[0] = bcd[0] | (bcd[1] << 4); |
| lai48->digits[1] = bcd[2]; |
| |
| to_bcd(bcd, mnc); |
| /* FIXME: do we need three-digit MNC? See Table 10.5.3 */ |
| #if 0 |
| lai48->digits[1] |= bcd[2] << 4; |
| lai48->digits[2] = bcd[0] | (bcd[1] << 4); |
| #else |
| lai48->digits[1] |= 0xf << 4; |
| lai48->digits[2] = bcd[1] | (bcd[2] << 4); |
| #endif |
| |
| lai48->lac = htons(lac); |
| } |
| |
| int gsm48_generate_mid_from_tmsi(uint8_t *buf, uint32_t tmsi) |
| { |
| uint32_t *tptr = (uint32_t *) &buf[3]; |
| |
| buf[0] = GSM48_IE_MOBILE_ID; |
| buf[1] = GSM48_TMSI_LEN; |
| buf[2] = 0xf0 | GSM_MI_TYPE_TMSI; |
| *tptr = htonl(tmsi); |
| |
| return 7; |
| } |
| |
| int gsm48_generate_mid_from_imsi(uint8_t *buf, const char *imsi) |
| { |
| unsigned int length = strlen(imsi), i, off = 0; |
| uint8_t odd = (length & 0x1) == 1; |
| |
| buf[0] = GSM48_IE_MOBILE_ID; |
| buf[2] = char2bcd(imsi[0]) << 4 | GSM_MI_TYPE_IMSI | (odd << 3); |
| |
| /* if the length is even we will fill half of the last octet */ |
| if (odd) |
| buf[1] = (length + 1) >> 1; |
| else |
| buf[1] = (length + 2) >> 1; |
| |
| for (i = 1; i < buf[1]; ++i) { |
| uint8_t lower, upper; |
| |
| lower = char2bcd(imsi[++off]); |
| if (!odd && off + 1 == length) |
| upper = 0x0f; |
| else |
| upper = char2bcd(imsi[++off]) & 0x0f; |
| |
| buf[2 + i] = (upper << 4) | lower; |
| } |
| |
| return 2 + buf[1]; |
| } |