Add 'libosmocore/' from commit '045cc22baeb7f12dcb0022b79a1984d86e922870'
git-subtree-dir: libosmocore
git-subtree-mainline: e164d29e7f6c86d1f6f047bbf58159e46a11425f
git-subtree-split: 045cc22baeb7f12dcb0022b79a1984d86e922870
diff --git a/libosmocore/src/gsm48.c b/libosmocore/src/gsm48.c
new file mode 100644
index 0000000..ff989ea
--- /dev/null
+++ b/libosmocore/src/gsm48.c
@@ -0,0 +1,283 @@
+/* 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];
+}