Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1 | /* Point-to-Point (PP) Short Message Service (SMS) |
| 2 | * Support on Mobile Radio Interface |
| 3 | * 3GPP TS 04.11 version 7.1.0 Release 1998 / ETSI TS 100 942 V7.1.0 */ |
| 4 | |
| 5 | /* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de> |
| 6 | * (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 7 | * |
| 8 | * All Rights Reserved |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | #include <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <string.h> |
| 30 | #include <errno.h> |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 31 | #include <time.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 32 | #include <netinet/in.h> |
| 33 | |
| 34 | #include <openbsc/msgb.h> |
| 35 | #include <openbsc/tlv.h> |
| 36 | #include <openbsc/debug.h> |
| 37 | #include <openbsc/gsm_data.h> |
| 38 | #include <openbsc/gsm_subscriber.h> |
| 39 | #include <openbsc/gsm_04_11.h> |
| 40 | #include <openbsc/gsm_04_08.h> |
| 41 | #include <openbsc/gsm_utils.h> |
| 42 | #include <openbsc/abis_rsl.h> |
| 43 | #include <openbsc/signal.h> |
| 44 | #include <openbsc/db.h> |
Harald Welte | a837977 | 2009-06-20 22:36:41 +0200 | [diff] [blame] | 45 | #include <openbsc/talloc.h> |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 46 | #include <openbsc/transaction.h> |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 47 | #include <openbsc/paging.h> |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 48 | #include <openbsc/bsc_rll.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 49 | |
| 50 | #define GSM411_ALLOC_SIZE 1024 |
| 51 | #define GSM411_ALLOC_HEADROOM 128 |
| 52 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 53 | #define UM_SAPI_SMS 3 /* See GSM 04.05/04.06 */ |
| 54 | |
Harald Welte | a837977 | 2009-06-20 22:36:41 +0200 | [diff] [blame] | 55 | static void *tall_gsms_ctx; |
| 56 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 57 | static u_int32_t new_callref = 0x40000001; |
| 58 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 59 | struct gsm_sms *sms_alloc(void) |
| 60 | { |
| 61 | return talloc_zero(tall_gsms_ctx, struct gsm_sms); |
| 62 | } |
| 63 | |
| 64 | void sms_free(struct gsm_sms *sms) |
| 65 | { |
| 66 | /* drop references to subscriber structure */ |
| 67 | if (sms->sender) |
| 68 | subscr_put(sms->sender); |
| 69 | if (sms->receiver) |
| 70 | subscr_put(sms->receiver); |
| 71 | |
| 72 | talloc_free(sms); |
| 73 | } |
| 74 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 75 | struct msgb *gsm411_msgb_alloc(void) |
| 76 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 77 | return msgb_alloc_headroom(GSM411_ALLOC_SIZE, GSM411_ALLOC_HEADROOM, |
| 78 | "GSM 04.11"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 79 | } |
| 80 | |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 81 | static int gsm411_sendmsg(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 82 | { |
| 83 | if (msg->lchan) |
| 84 | msg->trx = msg->lchan->ts->trx; |
| 85 | |
| 86 | msg->l3h = msg->data; |
| 87 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 88 | DEBUGP(DSMS, "GSM4.11 TX %s\n", hexdump(msg->data, msg->len)); |
| 89 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 90 | return rsl_data_request(msg, UM_SAPI_SMS); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 91 | } |
| 92 | |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 93 | /* Prefix msg with a 04.08/04.11 CP header */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 94 | static int gsm411_cp_sendmsg(struct msgb *msg, struct gsm_trans *trans, |
| 95 | u_int8_t msg_type) |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 96 | { |
| 97 | struct gsm48_hdr *gh; |
| 98 | |
| 99 | gh = (struct gsm48_hdr *) msgb_push(msg, sizeof(*gh)); |
| 100 | /* Outgoing needs the highest bit set */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 101 | gh->proto_discr = trans->protocol | (trans->transaction_id<<4); |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 102 | gh->msg_type = msg_type; |
| 103 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 104 | /* assign the outgoing lchan */ |
| 105 | msg->lchan = trans->lchan; |
| 106 | |
| 107 | /* mobile originating */ |
| 108 | switch (gh->msg_type) { |
| 109 | case GSM411_MT_CP_DATA: |
| 110 | /* 5.2.3.1.2: enter MO-wait for CP-ack */ |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 111 | /* 5.2.3.2.3: enter MT-wait for CP-ACK */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 112 | trans->sms.cp_state = GSM411_CPS_WAIT_CP_ACK; |
| 113 | break; |
| 114 | } |
| 115 | |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 116 | return gsm411_sendmsg(msg); |
| 117 | } |
| 118 | |
| 119 | /* Prefix msg with a RP-DATA header and send as CP-DATA */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 120 | static int gsm411_rp_sendmsg(struct msgb *msg, struct gsm_trans *trans, |
| 121 | u_int8_t rp_msg_type, u_int8_t rp_msg_ref) |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 122 | { |
| 123 | struct gsm411_rp_hdr *rp; |
Harald Welte | f2e680b | 2009-08-10 00:22:19 +0200 | [diff] [blame^] | 124 | u_int8_t len = msg->len; |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 125 | |
| 126 | /* GSM 04.11 RP-DATA header */ |
| 127 | rp = (struct gsm411_rp_hdr *)msgb_push(msg, sizeof(*rp)); |
Harald Welte | f2e680b | 2009-08-10 00:22:19 +0200 | [diff] [blame^] | 128 | rp->len = len + 2; |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 129 | rp->msg_type = rp_msg_type; |
| 130 | rp->msg_ref = rp_msg_ref; /* FIXME: Choose randomly */ |
| 131 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 132 | return gsm411_cp_sendmsg(msg, trans, GSM411_MT_CP_DATA); |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 133 | } |
| 134 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 135 | static unsigned long gsm340_validity_period(u_int8_t sms_vpf, u_int8_t *sms_vp) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 136 | { |
| 137 | u_int8_t vp; |
| 138 | unsigned long minutes; |
| 139 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 140 | switch (sms_vpf) { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 141 | case GSM340_TP_VPF_RELATIVE: |
| 142 | /* Chapter 9.2.3.12.1 */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 143 | vp = *(sms_vp); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 144 | if (vp <= 143) |
| 145 | minutes = vp + 1 * 5; |
| 146 | else if (vp <= 167) |
| 147 | minutes = 12*60 + (vp-143) * 30; |
| 148 | else if (vp <= 196) |
| 149 | minutes = vp-166 * 60 * 24; |
| 150 | else |
| 151 | minutes = vp-192 * 60 * 24 * 7; |
| 152 | break; |
| 153 | case GSM340_TP_VPF_ABSOLUTE: |
| 154 | /* Chapter 9.2.3.12.2 */ |
| 155 | /* FIXME: like service center time stamp */ |
| 156 | DEBUGP(DSMS, "VPI absolute not implemented yet\n"); |
| 157 | break; |
| 158 | case GSM340_TP_VPF_ENHANCED: |
| 159 | /* Chapter 9.2.3.12.3 */ |
| 160 | /* FIXME: implementation */ |
| 161 | DEBUGP(DSMS, "VPI enhanced not implemented yet\n"); |
| 162 | break; |
| 163 | } |
| 164 | return minutes; |
| 165 | } |
| 166 | |
| 167 | /* determine coding alphabet dependent on GSM 03.38 Section 4 DCS */ |
| 168 | enum sms_alphabet gsm338_get_sms_alphabet(u_int8_t dcs) |
| 169 | { |
| 170 | u_int8_t cgbits = dcs >> 4; |
| 171 | enum sms_alphabet alpha = DCS_NONE; |
| 172 | |
| 173 | if ((cgbits & 0xc) == 0) { |
| 174 | if (cgbits & 2) |
| 175 | DEBUGP(DSMS, "Compressed SMS not supported yet\n"); |
| 176 | |
| 177 | switch (dcs & 3) { |
| 178 | case 0: |
| 179 | alpha = DCS_7BIT_DEFAULT; |
| 180 | break; |
| 181 | case 1: |
| 182 | alpha = DCS_8BIT_DATA; |
| 183 | break; |
| 184 | case 2: |
| 185 | alpha = DCS_UCS2; |
| 186 | break; |
| 187 | } |
| 188 | } else if (cgbits == 0xc || cgbits == 0xd) |
| 189 | alpha = DCS_7BIT_DEFAULT; |
| 190 | else if (cgbits == 0xe) |
| 191 | alpha = DCS_UCS2; |
| 192 | else if (cgbits == 0xf) { |
| 193 | if (dcs & 4) |
| 194 | alpha = DCS_8BIT_DATA; |
| 195 | else |
| 196 | alpha = DCS_7BIT_DEFAULT; |
| 197 | } |
| 198 | |
| 199 | return alpha; |
| 200 | } |
| 201 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 202 | static int gsm340_rx_sms_submit(struct msgb *msg, struct gsm_sms *gsms) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 203 | { |
| 204 | if (db_sms_store(gsms) != 0) { |
| 205 | DEBUGP(DSMS, "Failed to store SMS in Database\n"); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 206 | return GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 207 | } |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 208 | /* dispatch a signal to tell higher level about it */ |
| 209 | dispatch_signal(SS_SMS, S_SMS_SUBMITTED, gsms); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 210 | return 0; |
| 211 | } |
| 212 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 213 | /* generate a TPDU address field compliant with 03.40 sec. 9.1.2.5 */ |
| 214 | static int gsm340_gen_oa(u_int8_t *oa, unsigned int oa_len, |
| 215 | struct gsm_subscriber *subscr) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 216 | { |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 217 | int len_in_bytes; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 218 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 219 | oa[1] = 0xb9; /* networks-specific number, private numbering plan */ |
| 220 | |
| 221 | len_in_bytes = encode_bcd_number(oa, oa_len, 1, subscr->extension); |
| 222 | |
| 223 | /* GSM 03.40 tells us the length is in 'useful semi-octets' */ |
| 224 | oa[0] = strlen(subscr->extension) & 0xff; |
| 225 | |
| 226 | return len_in_bytes; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | static u_int8_t bcdify(u_int8_t value) |
| 230 | { |
| 231 | u_int8_t ret; |
| 232 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 233 | ret = value / 10; |
| 234 | ret |= (value % 10) << 4; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 235 | |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | /* Generate 03.40 TP-SCTS */ |
| 240 | static void gsm340_gen_scts(u_int8_t *scts, time_t time) |
| 241 | { |
| 242 | struct tm *tm = localtime(&time); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 243 | |
| 244 | *scts++ = bcdify(tm->tm_year % 100); |
| 245 | *scts++ = bcdify(tm->tm_mon); |
| 246 | *scts++ = bcdify(tm->tm_mday); |
| 247 | *scts++ = bcdify(tm->tm_hour); |
| 248 | *scts++ = bcdify(tm->tm_min); |
| 249 | *scts++ = bcdify(tm->tm_sec); |
| 250 | *scts++ = 0; /* FIXME: timezone */ |
| 251 | } |
| 252 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 253 | /* generate a msgb containing a TPDU derived from struct gsm_sms, |
| 254 | * returns total size of TPDU */ |
| 255 | static int gsm340_gen_tpdu(struct msgb *msg, struct gsm_sms *sms) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 256 | { |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 257 | u_int8_t *smsp; |
| 258 | u_int8_t oa[12]; /* max len per 03.40 */ |
| 259 | u_int8_t oa_len = 0; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 260 | unsigned int old_msg_len = msg->len; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 261 | |
| 262 | /* generate first octet with masked bits */ |
| 263 | smsp = msgb_put(msg, 1); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 264 | /* TP-MTI (message type indicator) */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 265 | *smsp = GSM340_SMS_DELIVER_SC2MS; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 266 | /* TP-MMS (more messages to send) */ |
| 267 | if (0 /* FIXME */) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 268 | *smsp |= 0x04; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 269 | /* TP-SRI(deliver)/SRR(submit) */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 270 | if (sms->status_rep_req) |
| 271 | *smsp |= 0x20; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 272 | /* TP-UDHI (indicating TP-UD contains a header) */ |
| 273 | if (sms->ud_hdr_ind) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 274 | *smsp |= 0x40; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 275 | #if 0 |
| 276 | /* TP-RP (indicating that a reply path exists) */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 277 | if (sms-> |
| 278 | *smsp |= 0x80; |
| 279 | #endif |
| 280 | |
| 281 | /* generate originator address */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 282 | oa_len = gsm340_gen_oa(oa, sizeof(oa), sms->sender); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 283 | smsp = msgb_put(msg, oa_len); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 284 | memcpy(smsp, oa, oa_len); |
| 285 | |
| 286 | /* generate TP-PID */ |
| 287 | smsp = msgb_put(msg, 1); |
| 288 | *smsp = sms->protocol_id; |
| 289 | |
| 290 | /* generate TP-DCS */ |
| 291 | smsp = msgb_put(msg, 1); |
| 292 | *smsp = sms->data_coding_scheme; |
| 293 | |
| 294 | /* generate TP-SCTS */ |
| 295 | smsp = msgb_put(msg, 7); |
| 296 | gsm340_gen_scts(smsp, time(NULL)); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 297 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 298 | /* generate TP-UDL */ |
| 299 | smsp = msgb_put(msg, 1); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 300 | *smsp = sms->user_data_len; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 301 | |
| 302 | /* generate TP-UD */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 303 | smsp = msgb_put(msg, sms->user_data_len); |
| 304 | memcpy(smsp, sms->user_data, sms->user_data_len); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 305 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 306 | return msg->len - old_msg_len; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 307 | } |
| 308 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 309 | /* process an incoming TPDU (called from RP-DATA) |
| 310 | * return value > 0: RP CAUSE for ERROR; < 0: silent error; 0 = success */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 311 | static int gsm340_rx_tpdu(struct msgb *msg) |
| 312 | { |
Harald Welte | 7535041 | 2009-07-23 18:46:00 +0200 | [diff] [blame] | 313 | struct gsm_bts *bts = msg->lchan->ts->trx->bts; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 314 | u_int8_t *smsp = msgb_sms(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 315 | struct gsm_sms *gsms; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 316 | u_int8_t sms_mti, sms_mms, sms_vpf, sms_alphabet, sms_rp; |
| 317 | u_int8_t *sms_vp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 318 | u_int8_t da_len_bytes; |
| 319 | u_int8_t address_lv[12]; /* according to 03.40 / 9.1.2.5 */ |
| 320 | int rc = 0; |
| 321 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 322 | gsms = sms_alloc(); |
| 323 | if (!gsms) |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 324 | return GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 325 | |
| 326 | /* invert those fields where 0 means active/present */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 327 | sms_mti = *smsp & 0x03; |
| 328 | sms_mms = !!(*smsp & 0x04); |
| 329 | sms_vpf = (*smsp & 0x18) >> 3; |
| 330 | gsms->status_rep_req = (*smsp & 0x20); |
| 331 | gsms->ud_hdr_ind = (*smsp & 0x40); |
| 332 | sms_rp = (*smsp & 0x80); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 333 | |
| 334 | smsp++; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 335 | gsms->msg_ref = *smsp++; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 336 | |
| 337 | /* length in bytes of the destination address */ |
| 338 | da_len_bytes = 2 + *smsp/2 + *smsp%2; |
| 339 | if (da_len_bytes > 12) { |
| 340 | DEBUGP(DSMS, "Destination Address > 12 bytes ?!?\n"); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 341 | rc = GSM411_RP_CAUSE_SEMANT_INC_MSG; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 342 | goto out; |
| 343 | } |
Harald Welte | 3794e15 | 2009-06-12 02:42:11 +0800 | [diff] [blame] | 344 | memset(address_lv, 0, sizeof(address_lv)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 345 | memcpy(address_lv, smsp, da_len_bytes); |
| 346 | /* mangle first byte to reflect length in bytes, not digits */ |
Harald Welte | 3794e15 | 2009-06-12 02:42:11 +0800 | [diff] [blame] | 347 | address_lv[0] = da_len_bytes - 1; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 348 | /* convert to real number */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 349 | decode_bcd_number(gsms->dest_addr, sizeof(gsms->dest_addr), address_lv, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 350 | smsp += da_len_bytes; |
| 351 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 352 | gsms->protocol_id = *smsp++; |
| 353 | gsms->data_coding_scheme = *smsp++; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 354 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 355 | sms_alphabet = gsm338_get_sms_alphabet(gsms->data_coding_scheme); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 356 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 357 | switch (sms_vpf) { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 358 | case GSM340_TP_VPF_RELATIVE: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 359 | sms_vp = smsp++; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 360 | break; |
| 361 | case GSM340_TP_VPF_ABSOLUTE: |
| 362 | case GSM340_TP_VPF_ENHANCED: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 363 | sms_vp = smsp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 364 | smsp += 7; |
| 365 | break; |
| 366 | default: |
| 367 | DEBUGP(DSMS, "SMS Validity period not implemented: 0x%02x\n", |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 368 | sms_vpf); |
| 369 | return GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 370 | } |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 371 | gsms->user_data_len = *smsp++; |
| 372 | if (gsms->user_data_len) { |
| 373 | memcpy(gsms->user_data, smsp, gsms->user_data_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 374 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 375 | switch (sms_alphabet) { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 376 | case DCS_7BIT_DEFAULT: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 377 | gsm_7bit_decode(gsms->text, smsp, gsms->user_data_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 378 | break; |
| 379 | case DCS_8BIT_DATA: |
| 380 | case DCS_UCS2: |
| 381 | case DCS_NONE: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 382 | break; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | DEBUGP(DSMS, "SMS:\nMTI: 0x%02x, VPF: 0x%02x, MR: 0x%02x " |
| 387 | "PID: 0x%02x, DCS: 0x%02x, DA: %s, UserDataLength: 0x%02x " |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 388 | "UserData: \"%s\"\n", sms_mti, sms_vpf, gsms->msg_ref, |
| 389 | gsms->protocol_id, gsms->data_coding_scheme, |
| 390 | gsms->dest_addr, gsms->user_data_len, |
| 391 | sms_alphabet == DCS_7BIT_DEFAULT ? gsms->text : |
| 392 | hexdump(gsms->user_data, gsms->user_data_len)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 393 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 394 | gsms->sender = subscr_get(msg->lchan->subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 395 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 396 | gsms->validity_minutes = gsm340_validity_period(sms_vpf, sms_vp); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 397 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 398 | dispatch_signal(SS_SMS, 0, gsms); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 399 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 400 | /* determine gsms->receiver based on dialled number */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 401 | gsms->receiver = subscr_get_by_extension(bts->network, gsms->dest_addr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 402 | if (!gsms->receiver) { |
| 403 | rc = 1; /* cause 1: unknown subscriber */ |
| 404 | goto out; |
| 405 | } |
| 406 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 407 | switch (sms_mti) { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 408 | case GSM340_SMS_SUBMIT_MS2SC: |
| 409 | /* MS is submitting a SMS */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 410 | rc = gsm340_rx_sms_submit(msg, gsms); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 411 | break; |
| 412 | case GSM340_SMS_COMMAND_MS2SC: |
| 413 | case GSM340_SMS_DELIVER_REP_MS2SC: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 414 | DEBUGP(DSMS, "Unimplemented MTI 0x%02x\n", sms_mti); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 415 | rc = GSM411_RP_CAUSE_IE_NOTEXIST; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 416 | break; |
| 417 | default: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 418 | DEBUGP(DSMS, "Undefined MTI 0x%02x\n", sms_mti); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 419 | rc = GSM411_RP_CAUSE_IE_NOTEXIST; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 420 | break; |
| 421 | } |
| 422 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 423 | if (!rc && !gsms->receiver) |
| 424 | rc = GSM411_RP_CAUSE_MO_NUM_UNASSIGNED; |
| 425 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 426 | out: |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 427 | sms_free(gsms); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 428 | |
| 429 | return rc; |
| 430 | } |
| 431 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 432 | static int gsm411_send_rp_ack(struct gsm_trans *trans, u_int8_t msg_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 433 | { |
| 434 | struct msgb *msg = gsm411_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 435 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 436 | DEBUGP(DSMS, "TX: SMS RP ACK\n"); |
| 437 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 438 | return gsm411_rp_sendmsg(msg, trans, GSM411_MT_RP_ACK_MT, msg_ref); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 439 | } |
| 440 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 441 | static int gsm411_send_rp_error(struct gsm_trans *trans, |
| 442 | u_int8_t msg_ref, u_int8_t cause) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 443 | { |
| 444 | struct msgb *msg = gsm411_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 445 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 446 | msgb_tv_put(msg, 1, cause); |
| 447 | |
| 448 | DEBUGP(DSMS, "TX: SMS RP ERROR (cause %02d)\n", cause); |
| 449 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 450 | return gsm411_rp_sendmsg(msg, trans, GSM411_MT_RP_ERROR_MT, msg_ref); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | /* Receive a 04.11 TPDU inside RP-DATA / user data */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 454 | static int gsm411_rx_rp_ud(struct msgb *msg, struct gsm_trans *trans, |
| 455 | struct gsm411_rp_hdr *rph, |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 456 | u_int8_t src_len, u_int8_t *src, |
| 457 | u_int8_t dst_len, u_int8_t *dst, |
| 458 | u_int8_t tpdu_len, u_int8_t *tpdu) |
| 459 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 460 | int rc = 0; |
| 461 | |
| 462 | if (src_len && src) |
| 463 | DEBUGP(DSMS, "RP-DATA (MO) with SRC ?!?\n"); |
| 464 | |
| 465 | if (!dst_len || !dst || !tpdu_len || !tpdu) { |
| 466 | DEBUGP(DSMS, "RP-DATA (MO) without DST or TPDU ?!?\n"); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 467 | gsm411_send_rp_error(trans, rph->msg_ref, |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 468 | GSM411_RP_CAUSE_INV_MAND_INF); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 469 | return -EIO; |
| 470 | } |
| 471 | msg->smsh = tpdu; |
| 472 | |
| 473 | DEBUGP(DSMS, "DST(%u,%s)\n", dst_len, hexdump(dst, dst_len)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 474 | |
| 475 | rc = gsm340_rx_tpdu(msg); |
| 476 | if (rc == 0) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 477 | return gsm411_send_rp_ack(trans, rph->msg_ref); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 478 | else if (rc > 0) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 479 | return gsm411_send_rp_error(trans, rph->msg_ref, rc); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 480 | else |
| 481 | return rc; |
| 482 | } |
| 483 | |
| 484 | /* Receive a 04.11 RP-DATA message in accordance with Section 7.3.1.2 */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 485 | static int gsm411_rx_rp_data(struct msgb *msg, struct gsm_trans *trans, |
| 486 | struct gsm411_rp_hdr *rph) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 487 | { |
| 488 | u_int8_t src_len, dst_len, rpud_len; |
| 489 | u_int8_t *src = NULL, *dst = NULL , *rp_ud = NULL; |
| 490 | |
| 491 | /* in the MO case, this should always be zero length */ |
| 492 | src_len = rph->data[0]; |
| 493 | if (src_len) |
| 494 | src = &rph->data[1]; |
| 495 | |
| 496 | dst_len = rph->data[1+src_len]; |
| 497 | if (dst_len) |
| 498 | dst = &rph->data[1+src_len+1]; |
| 499 | |
| 500 | rpud_len = rph->data[1+src_len+1+dst_len]; |
| 501 | if (rpud_len) |
| 502 | rp_ud = &rph->data[1+src_len+1+dst_len+1]; |
| 503 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 504 | DEBUGP(DSMS, "RX_RP-DATA: src_len=%u, dst_len=%u ud_len=%u\n", |
| 505 | src_len, dst_len, rpud_len); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 506 | return gsm411_rx_rp_ud(msg, trans, rph, src_len, src, dst_len, dst, |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 507 | rpud_len, rp_ud); |
| 508 | } |
| 509 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 510 | /* Receive a 04.11 RP-ACK message (response to RP-DATA from us) */ |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 511 | static int gsm411_rx_rp_ack(struct msgb *msg, struct gsm_trans *trans, |
| 512 | struct gsm411_rp_hdr *rph) |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 513 | { |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 514 | struct gsm_sms *sms = trans->sms.sms; |
| 515 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 516 | /* Acnkowledgement to MT RP_DATA, i.e. the MS confirms it |
| 517 | * successfully received a SMS. We can now safely mark it as |
| 518 | * transmitted */ |
| 519 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 520 | if (!trans->sms.is_mt) { |
| 521 | DEBUGP(DSMS, "RX RP-ACK on a MO transfer ?\n"); |
| 522 | return gsm411_send_rp_error(trans, rph->msg_ref, |
| 523 | GSM411_RP_CAUSE_MSG_INCOMP_STATE); |
| 524 | } |
Harald Welte | dd62b16 | 2009-07-09 23:52:59 +0200 | [diff] [blame] | 525 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 526 | if (!sms) { |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 527 | DEBUGP(DSMS, "RX RP-ACK but no sms in transaction?!?\n"); |
| 528 | return gsm411_send_rp_error(trans, rph->msg_ref, |
| 529 | GSM411_RP_CAUSE_PROTOCOL_ERR); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | /* mark this SMS as sent in database */ |
| 533 | db_sms_mark_sent(sms); |
| 534 | |
| 535 | dispatch_signal(SS_SMS, S_SMS_DELIVERED, sms); |
| 536 | |
| 537 | sms_free(sms); |
| 538 | trans->sms.sms = NULL; |
| 539 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 540 | /* do not free the transaction here, this is done by sending CP-ACK */ |
| 541 | |
| 542 | /* check for more messages for this subscriber */ |
| 543 | sms = db_sms_get_unsent_for_subscr(msg->lchan->subscr); |
| 544 | if (sms) |
| 545 | gsm411_send_sms_lchan(msg->lchan, sms); |
| 546 | else |
| 547 | rsl_release_request(msg->lchan, UM_SAPI_SMS); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 548 | |
| 549 | return 0; |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 550 | } |
| 551 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 552 | static int gsm411_rx_rp_error(struct msgb *msg, struct gsm_trans *trans, |
| 553 | struct gsm411_rp_hdr *rph) |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 554 | { |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 555 | struct gsm_sms *sms = trans->sms.sms; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 556 | u_int8_t cause_len = rph->data[0]; |
| 557 | u_int8_t cause = rph->data[1]; |
| 558 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 559 | /* Error in response to MT RP_DATA, i.e. the MS did not |
| 560 | * successfully receive the SMS. We need to investigate |
| 561 | * the cause and take action depending on it */ |
| 562 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 563 | DEBUGP(DSMS, "RX SMS RP-ERROR Cause=0x%02x\n", cause); |
| 564 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 565 | if (!trans->sms.is_mt) { |
| 566 | DEBUGP(DSMS, "RX RP-ERR on a MO transfer ?\n"); |
| 567 | return gsm411_send_rp_error(trans, rph->msg_ref, |
| 568 | GSM411_RP_CAUSE_MSG_INCOMP_STATE); |
| 569 | } |
Harald Welte | dd62b16 | 2009-07-09 23:52:59 +0200 | [diff] [blame] | 570 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 571 | if (!sms) { |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 572 | DEBUGP(DSMS, "RX RP-ERR, but no sms in transaction?!?\n"); |
| 573 | return gsm411_send_rp_error(trans, rph->msg_ref, |
| 574 | GSM411_RP_CAUSE_PROTOCOL_ERR); |
| 575 | } |
| 576 | |
| 577 | if (cause == GSM411_RP_CAUSE_MT_MEM_EXCEEDED) { |
| 578 | /* MS has not enough memory to store the message. We need |
| 579 | * to store this in our database and wati for a SMMA message */ |
| 580 | /* FIXME */ |
| 581 | dispatch_signal(SS_SMS, S_SMS_MEM_EXCEEDED, trans->subscr); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | sms_free(sms); |
| 585 | trans->sms.sms = NULL; |
| 586 | |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 587 | trans_free(trans); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 588 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 589 | return 0; |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 590 | } |
| 591 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 592 | static int gsm411_rx_rp_smma(struct msgb *msg, struct gsm_trans *trans, |
| 593 | struct gsm411_rp_hdr *rph) |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 594 | { |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 595 | struct gsm_sms *sms; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 596 | int rc; |
| 597 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 598 | rc = gsm411_send_rp_ack(trans, rph->msg_ref); |
| 599 | trans->sms.rp_state = GSM411_RPS_IDLE; |
| 600 | |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 601 | /* MS tells us that it has memory for more SMS, we need |
| 602 | * to check if we have any pending messages for it and then |
| 603 | * transfer those */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 604 | dispatch_signal(SS_SMS, S_SMS_SMMA, trans->subscr); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 605 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 606 | /* check for more messages for this subscriber */ |
| 607 | sms = db_sms_get_unsent_for_subscr(msg->lchan->subscr); |
| 608 | if (sms) |
| 609 | gsm411_send_sms_lchan(msg->lchan, sms); |
| 610 | else |
| 611 | rsl_release_request(msg->lchan, UM_SAPI_SMS); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 612 | |
| 613 | return rc; |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 614 | } |
| 615 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 616 | static int gsm411_rx_cp_data(struct msgb *msg, struct gsm48_hdr *gh, |
| 617 | struct gsm_trans *trans) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 618 | { |
| 619 | struct gsm411_rp_hdr *rp_data = (struct gsm411_rp_hdr*)&gh->data; |
| 620 | u_int8_t msg_type = rp_data->msg_type & 0x07; |
| 621 | int rc = 0; |
| 622 | |
| 623 | switch (msg_type) { |
| 624 | case GSM411_MT_RP_DATA_MO: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 625 | DEBUGP(DSMS, "RX SMS RP-DATA (MO)\n"); |
| 626 | /* start TR2N and enter 'wait to send RP-ACK state' */ |
| 627 | trans->sms.rp_state = GSM411_RPS_WAIT_TO_TX_RP_ACK; |
| 628 | rc = gsm411_rx_rp_data(msg, trans, rp_data); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 629 | break; |
| 630 | case GSM411_MT_RP_ACK_MO: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 631 | DEBUGP(DSMS,"RX SMS RP-ACK (MO)\n"); |
| 632 | rc = gsm411_rx_rp_ack(msg, trans, rp_data); |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 633 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 634 | case GSM411_MT_RP_SMMA_MO: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 635 | DEBUGP(DSMS, "RX SMS RP-SMMA\n"); |
| 636 | /* start TR2N and enter 'wait to send RP-ACK state' */ |
| 637 | trans->sms.rp_state = GSM411_RPS_WAIT_TO_TX_RP_ACK; |
| 638 | rc = gsm411_rx_rp_smma(msg, trans, rp_data); |
| 639 | break; |
| 640 | case GSM411_MT_RP_ERROR_MO: |
| 641 | rc = gsm411_rx_rp_error(msg, trans, rp_data); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 642 | break; |
| 643 | default: |
| 644 | DEBUGP(DSMS, "Invalid RP type 0x%02x\n", msg_type); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 645 | rc = gsm411_send_rp_error(trans, rp_data->msg_ref, |
| 646 | GSM411_RP_CAUSE_MSGTYPE_NOTEXIST); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 647 | break; |
| 648 | } |
| 649 | |
| 650 | return rc; |
| 651 | } |
| 652 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 653 | /* send CP-ACK to given transaction */ |
| 654 | static int gsm411_tx_cp_ack(struct gsm_trans *trans) |
| 655 | { |
| 656 | struct msgb *msg = gsm411_msgb_alloc(); |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 657 | int rc; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 658 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 659 | rc = gsm411_cp_sendmsg(msg, trans, GSM411_MT_CP_ACK); |
| 660 | |
| 661 | if (trans->sms.is_mt) { |
| 662 | /* If this is a MT SMS DELIVER, we can clear transaction here */ |
| 663 | trans->sms.cp_state = GSM411_CPS_IDLE; |
| 664 | trans_free(trans); |
| 665 | } |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | static int gsm411_tx_cp_error(struct gsm_trans *trans, u_int8_t cause) |
| 669 | { |
| 670 | struct msgb *msg = gsm411_msgb_alloc(); |
| 671 | u_int8_t *causep; |
| 672 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 673 | causep = msgb_put(msg, 1); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 674 | *causep = cause; |
| 675 | |
| 676 | return gsm411_cp_sendmsg(msg, trans, GSM411_MT_CP_ERROR); |
| 677 | } |
| 678 | |
| 679 | /* Entry point for incoming GSM48_PDISC_SMS from abis_rsl.c */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 680 | int gsm0411_rcv_sms(struct msgb *msg) |
| 681 | { |
| 682 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 683 | u_int8_t msg_type = gh->msg_type; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 684 | u_int8_t transaction_id = ((gh->proto_discr >> 4) ^ 0x8); /* flip */ |
| 685 | struct gsm_lchan *lchan = msg->lchan; |
| 686 | struct gsm_trans *trans; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 687 | int rc = 0; |
| 688 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 689 | if (!lchan->subscr) |
| 690 | return -EIO; |
| 691 | /* FIXME: send some error message */ |
| 692 | |
| 693 | trans = trans_find_by_id(lchan->subscr, GSM48_PDISC_SMS, |
| 694 | transaction_id); |
| 695 | if (!trans) { |
| 696 | DEBUGP(DSMS, "Unknown transaction ID %x, " |
| 697 | "creating new trans\n", transaction_id); |
| 698 | trans = trans_alloc(lchan->subscr, GSM48_PDISC_SMS, |
| 699 | transaction_id, new_callref++); |
| 700 | if (!trans) { |
| 701 | DEBUGP(DSMS, "No memory for trans\n"); |
| 702 | /* FIXME: send some error message */ |
| 703 | return -ENOMEM; |
| 704 | } |
| 705 | trans->sms.cp_state = GSM411_CPS_IDLE; |
| 706 | trans->sms.rp_state = GSM411_RPS_IDLE; |
| 707 | trans->sms.is_mt = 0; |
| 708 | |
| 709 | trans->lchan = lchan; |
| 710 | use_lchan(lchan); |
| 711 | } |
| 712 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 713 | switch(msg_type) { |
| 714 | case GSM411_MT_CP_DATA: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 715 | DEBUGP(DSMS, "RX SMS CP-DATA\n"); |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 716 | /* 5.2.3.1.3: MO state exists when SMC has received |
| 717 | * CP-DATA, including sending of the assoc. CP-ACK */ |
| 718 | /* 5.2.3.2.4: MT state exists when SMC has received |
| 719 | * CP-DATA, including sending of the assoc. CP-ACK */ |
| 720 | trans->sms.cp_state = GSM411_CPS_MM_ESTABLISHED; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 721 | |
| 722 | rc = gsm411_rx_cp_data(msg, gh, trans); |
| 723 | /* Send CP-ACK or CP-ERORR in response */ |
| 724 | if (rc < 0) { |
| 725 | rc = gsm411_tx_cp_error(trans, GSM411_CP_CAUSE_NET_FAIL); |
| 726 | } else |
| 727 | rc = gsm411_tx_cp_ack(trans); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 728 | break; |
| 729 | case GSM411_MT_CP_ACK: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 730 | /* previous CP-DATA in this transaction was confirmed */ |
| 731 | DEBUGP(DSMS, "RX SMS CP-ACK\n"); |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 732 | /* 5.2.3.1.3: MO state exists when SMC has received CP-ACK */ |
| 733 | /* 5.2.3.2.4: MT state exists when SMC has received CP-ACK */ |
| 734 | trans->sms.cp_state = GSM411_CPS_MM_ESTABLISHED; |
| 735 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 736 | if (!trans->sms.is_mt) { |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 737 | /* FIXME: we have sont one CP-DATA, which was now |
| 738 | * acknowledged. Check if we want to transfer more, |
| 739 | * i.e. multi-part message */ |
| 740 | trans->sms.cp_state = GSM411_CPS_IDLE; |
| 741 | trans_free(trans); |
| 742 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 743 | break; |
| 744 | case GSM411_MT_CP_ERROR: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 745 | DEBUGP(DSMS, "RX SMS CP-ERROR, cause 0x%02x\n", gh->data[0]); |
| 746 | trans->sms.cp_state = GSM411_CPS_IDLE; |
| 747 | trans_free(trans); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 748 | break; |
| 749 | default: |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 750 | DEBUGP(DSMS, "RX Unimplemented CP msg_type: 0x%02x\n", msg_type); |
| 751 | rc = gsm411_tx_cp_error(trans, GSM411_CP_CAUSE_MSGTYPE_NOTEXIST); |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 752 | trans->sms.cp_state = GSM411_CPS_IDLE; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 753 | trans_free(trans); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 754 | break; |
| 755 | } |
| 756 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 757 | return rc; |
| 758 | } |
| 759 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 760 | #if 0 |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 761 | /* Test TPDU - ALL YOUR */ |
| 762 | static u_int8_t tpdu_test[] = { |
| 763 | 0x04, 0x04, 0x81, 0x32, 0x24, 0x00, 0x00, 0x80, 0x21, 0x03, 0x41, 0x24, |
| 764 | 0x32, 0x40, 0x1F, 0x41, 0x26, 0x13, 0x94, 0x7D, 0x56, 0xA5, 0x20, 0x28, |
| 765 | 0xF2, 0xE9, 0x2C, 0x82, 0x82, 0xD2, 0x22, 0x48, 0x58, 0x64, 0x3E, 0x9D, |
| 766 | 0x47, 0x10, 0xF5, 0x09, 0xAA, 0x4E, 0x01 |
| 767 | }; |
| 768 | #endif |
| 769 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 770 | /* Take a SMS in gsm_sms structure and send it through an already |
| 771 | * existing lchan. We also assume that the caller ensured this lchan already |
| 772 | * has a SAPI3 RLL connection! */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 773 | int gsm411_send_sms_lchan(struct gsm_lchan *lchan, struct gsm_sms *sms) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 774 | { |
| 775 | struct msgb *msg = gsm411_msgb_alloc(); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 776 | struct gsm_trans *trans; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 777 | u_int8_t *data, *rp_ud_len; |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 778 | u_int8_t msg_ref = 42; |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 779 | u_int8_t transaction_id; |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 780 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 781 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 782 | transaction_id = 4; /* FIXME: we always use 4 for now */ |
| 783 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 784 | msg->lchan = lchan; |
| 785 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 786 | DEBUGP(DSMS, "send_sms_lchan()\n"); |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 787 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 788 | /* FIXME: allocate transaction with message reference */ |
| 789 | trans = trans_alloc(lchan->subscr, GSM48_PDISC_SMS, |
| 790 | transaction_id, new_callref++); |
| 791 | if (!trans) { |
| 792 | DEBUGP(DSMS, "No memory for trans\n"); |
| 793 | /* FIXME: send some error message */ |
| 794 | return -ENOMEM; |
| 795 | } |
| 796 | trans->sms.cp_state = GSM411_CPS_IDLE; |
| 797 | trans->sms.rp_state = GSM411_RPS_IDLE; |
| 798 | trans->sms.is_mt = 1; |
| 799 | trans->sms.sms = sms; |
| 800 | |
| 801 | trans->lchan = lchan; |
| 802 | use_lchan(lchan); |
| 803 | |
| 804 | /* Hardcode SMSC Originating Address for now */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 805 | data = (u_int8_t *)msgb_put(msg, 8); |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 806 | data[0] = 0x07; /* originator length == 7 */ |
Harald Welte | 156c5e6 | 2009-07-05 14:02:46 +0200 | [diff] [blame] | 807 | data[1] = 0x91; /* type of number: international, ISDN */ |
| 808 | data[2] = 0x44; /* 447785016005 */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 809 | data[3] = 0x77; |
| 810 | data[4] = 0x58; |
| 811 | data[5] = 0x10; |
| 812 | data[6] = 0x06; |
| 813 | data[7] = 0x50; |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 814 | |
| 815 | /* Hardcoded Destination Address */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 816 | data = (u_int8_t *)msgb_put(msg, 1); |
Harald Welte | 7e2f57d | 2009-07-04 17:39:00 +0200 | [diff] [blame] | 817 | data[0] = 0; /* destination length == 0 */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 818 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 819 | /* obtain a pointer for the rp_ud_len, so we can fill it later */ |
| 820 | rp_ud_len = (u_int8_t *)msgb_put(msg, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 821 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 822 | #if 1 |
| 823 | /* generate the 03.40 TPDU */ |
| 824 | rc = gsm340_gen_tpdu(msg, sms); |
| 825 | if (rc < 0) { |
| 826 | msgb_free(msg); |
| 827 | return rc; |
| 828 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 829 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 830 | *rp_ud_len = rc; |
| 831 | #else |
| 832 | data = msgb_put(msg, sizeof(tpdu_test)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 833 | memcpy(data, tpdu_test, sizeof(tpdu_test)); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 834 | *rp_ud_len = sizeof(tpdu_test); |
| 835 | #endif |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 836 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 837 | DEBUGP(DSMS, "TX: SMS DELIVER\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 838 | |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 839 | return gsm411_rp_sendmsg(msg, trans, GSM411_MT_RP_DATA_MT, msg_ref); |
| 840 | /* FIXME: enter 'wait for RP-ACK' state, start TR1N */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 841 | } |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 842 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 843 | /* RLL SAPI3 establish callback. Now we have a RLL connection and |
| 844 | * can deliver the actual message */ |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 845 | static void rll_ind_cb(struct gsm_lchan *lchan, u_int8_t link_id, |
| 846 | void *_sms, enum bsc_rllr_ind type) |
| 847 | { |
| 848 | struct gsm_sms *sms = _sms; |
| 849 | |
| 850 | DEBUGP(DSMS, "rll_ind_cb(lchan=%p, link_id=%u, sms=%p, type=%u\n", |
| 851 | lchan, link_id, sms, type); |
| 852 | |
| 853 | switch (type) { |
| 854 | case BSC_RLLR_IND_EST_CONF: |
| 855 | gsm411_send_sms_lchan(lchan, sms); |
| 856 | break; |
| 857 | case BSC_RLLR_IND_REL_IND: |
| 858 | case BSC_RLLR_IND_ERR_IND: |
| 859 | case BSC_RLLR_IND_TIMEOUT: |
| 860 | sms_free(sms); |
| 861 | break; |
| 862 | } |
| 863 | } |
| 864 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 865 | /* paging callback. Here we get called if paging a subscriber has |
| 866 | * succeeded or failed. */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 867 | static int paging_cb_send_sms(unsigned int hooknum, unsigned int event, |
| 868 | struct msgb *msg, void *_lchan, void *_sms) |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 869 | { |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 870 | struct gsm_lchan *lchan = _lchan; |
| 871 | struct gsm_sms *sms = _sms; |
| 872 | int rc; |
Harald Welte | b78996d | 2009-07-27 20:11:35 +0200 | [diff] [blame] | 873 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 874 | DEBUGP(DSMS, "paging_cb_send_sms(hooknum=%u, event=%u, msg=%p," |
| 875 | "lchan=%p, sms=%p)\n", hooknum, event, msg, lchan, sms); |
| 876 | |
| 877 | if (hooknum != GSM_HOOK_RR_PAGING) |
| 878 | return -EINVAL; |
| 879 | |
| 880 | switch (event) { |
| 881 | case GSM_PAGING_SUCCEEDED: |
| 882 | /* Paging aborted without lchan ?!? */ |
| 883 | if (!lchan) { |
| 884 | sms_free(sms); |
| 885 | rc = -EIO; |
| 886 | break; |
| 887 | } |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 888 | /* Establish a SAPI3 RLL connection for SMS */ |
Harald Welte | 09421d3 | 2009-08-09 14:59:02 +0200 | [diff] [blame] | 889 | rc = rll_establish(lchan, UM_SAPI_SMS, rll_ind_cb, sms); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 890 | break; |
| 891 | case GSM_PAGING_EXPIRED: |
| 892 | sms_free(sms); |
| 893 | rc = -ETIMEDOUT; |
| 894 | break; |
| 895 | default: |
| 896 | rc = -EINVAL; |
| 897 | break; |
| 898 | } |
| 899 | |
| 900 | return rc; |
| 901 | } |
| 902 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 903 | /* high-level function to send a SMS to a given subscriber. The function |
| 904 | * will take care of paging the subscriber, establishing the RLL SAPI3 |
| 905 | * connection, etc. */ |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 906 | int gsm411_send_sms_subscr(struct gsm_subscriber *subscr, |
| 907 | struct gsm_sms *sms) |
| 908 | { |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 909 | struct gsm_lchan *lchan; |
| 910 | |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 911 | /* check if we already have an open lchan to the subscriber. |
| 912 | * if yes, send the SMS this way */ |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 913 | lchan = lchan_for_subscr(subscr); |
| 914 | if (lchan) |
| 915 | return rll_establish(lchan, UM_SAPI_SMS, |
| 916 | rll_ind_cb, sms); |
Harald Welte | 68b7df2 | 2009-08-08 16:03:15 +0200 | [diff] [blame] | 917 | |
| 918 | /* if not, we have to start paging */ |
| 919 | paging_request(subscr->net, subscr, RSL_CHANNEED_SDCCH, |
| 920 | paging_cb_send_sms, sms); |
| 921 | |
| 922 | return 0; |
| 923 | } |
Harald Welte | 5b359d8 | 2009-07-28 00:44:49 +0200 | [diff] [blame] | 924 | |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 925 | static int subscr_sig_cb(unsigned int subsys, unsigned int signal, |
| 926 | void *handler_data, void *signal_data) |
| 927 | { |
| 928 | struct gsm_subscriber *subscr; |
| 929 | struct gsm_lchan *lchan; |
| 930 | struct gsm_sms *sms; |
| 931 | |
| 932 | switch (signal) { |
| 933 | case S_SUBSCR_ATTACHED: |
| 934 | /* A subscriber has attached. Check if there are |
| 935 | * any pending SMS for him to be delivered */ |
| 936 | subscr = signal_data; |
| 937 | lchan = lchan_for_subscr(subscr); |
| 938 | if (!lchan) |
| 939 | break; |
| 940 | sms = db_sms_get_unsent_for_subscr(subscr); |
| 941 | if (!sms) |
| 942 | break; |
| 943 | /* Establish a SAPI3 RLL connection for SMS */ |
| 944 | rll_establish(lchan, UM_SAPI_SMS, rll_ind_cb, sms); |
| 945 | break; |
| 946 | default: |
| 947 | break; |
| 948 | } |
| 949 | return 0; |
| 950 | } |
| 951 | |
Harald Welte | 932e20d | 2009-07-28 00:41:45 +0200 | [diff] [blame] | 952 | static __attribute__((constructor)) void on_dso_load_sms(void) |
| 953 | { |
Harald Welte | 932e20d | 2009-07-28 00:41:45 +0200 | [diff] [blame] | 954 | tall_gsms_ctx = talloc_named_const(tall_bsc_ctx, 1, "sms"); |
Harald Welte | fc01b24 | 2009-08-09 19:07:41 +0200 | [diff] [blame] | 955 | |
| 956 | register_signal_handler(SS_SUBSCR, subscr_sig_cb, NULL); |
Harald Welte | 932e20d | 2009-07-28 00:41:45 +0200 | [diff] [blame] | 957 | } |