/* 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 * (C) 2008, 2009 by Holger Hans Peter Freyther * * 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 #include #include #include #include #include #include #include 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]; }