Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <unistd.h> |
| 3 | #include <stdint.h> |
| 4 | #include <errno.h> |
| 5 | #include <string.h> |
| 6 | |
| 7 | #include <netinet/in.h> |
| 8 | |
| 9 | #include <smpp34.h> |
| 10 | #include <smpp34_structs.h> |
| 11 | #include <smpp34_params.h> |
| 12 | |
Holger Hans Peter Freyther | 5ecbc93 | 2013-07-27 18:39:30 +0200 | [diff] [blame] | 13 | #include <osmocom/core/application.h> |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 14 | #include <osmocom/core/utils.h> |
| 15 | #include <osmocom/core/msgb.h> |
| 16 | #include <osmocom/core/talloc.h> |
| 17 | #include <osmocom/core/select.h> |
| 18 | #include <osmocom/core/socket.h> |
| 19 | #include <osmocom/core/write_queue.h> |
| 20 | |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 21 | #include <osmocom/msc/debug.h> |
Max | 5346f69 | 2022-07-28 14:19:22 +0700 | [diff] [blame^] | 22 | #include <osmocom/smpp/smpp.h> |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 23 | |
| 24 | /* FIXME: merge with smpp_smsc.c */ |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 25 | |
| 26 | struct esme { |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 27 | uint32_t own_seq_nr; |
| 28 | |
| 29 | struct osmo_wqueue wqueue; |
| 30 | enum esme_read_state read_state; |
| 31 | uint32_t read_len; |
| 32 | uint32_t read_idx; |
| 33 | struct msgb *read_msg; |
| 34 | |
| 35 | uint8_t smpp_version; |
| 36 | char system_id[SMPP_SYS_ID_LEN+1]; |
| 37 | char password[SMPP_SYS_ID_LEN+1]; |
| 38 | }; |
| 39 | |
| 40 | /* FIXME: merge with smpp_smsc.c */ |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 41 | static uint32_t esme_inc_seq_nr(struct esme *esme) |
| 42 | { |
| 43 | esme->own_seq_nr++; |
| 44 | if (esme->own_seq_nr > 0x7fffffff) |
| 45 | esme->own_seq_nr = 1; |
| 46 | |
| 47 | return esme->own_seq_nr; |
| 48 | } |
| 49 | static int pack_and_send(struct esme *esme, uint32_t type, void *ptr) |
| 50 | { |
| 51 | struct msgb *msg = msgb_alloc(4096, "SMPP_Tx"); |
| 52 | int rc, rlen; |
| 53 | if (!msg) |
| 54 | return -ENOMEM; |
| 55 | |
| 56 | rc = smpp34_pack(type, msg->tail, msgb_tailroom(msg), &rlen, ptr); |
| 57 | if (rc != 0) { |
| 58 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error during smpp34_pack(): %s\n", |
| 59 | esme->system_id, smpp34_strerror); |
| 60 | msgb_free(msg); |
| 61 | return -EINVAL; |
| 62 | } |
| 63 | msgb_put(msg, rlen); |
| 64 | |
Holger Hans Peter Freyther | fd603ed | 2015-03-28 18:09:31 +0100 | [diff] [blame] | 65 | if (osmo_wqueue_enqueue(&esme->wqueue, msg) != 0) { |
| 66 | LOGP(DSMPP, LOGL_ERROR, "[%s] Write queue full. Dropping message\n", |
| 67 | esme->system_id); |
| 68 | msgb_free(msg); |
| 69 | return -EAGAIN; |
| 70 | } |
| 71 | return 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 72 | } |
| 73 | /* FIXME: merge with smpp_smsc.c */ |
| 74 | |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 75 | static struct tlv_t *find_tlv(struct tlv_t *head, uint16_t tag) |
| 76 | { |
| 77 | struct tlv_t *t; |
| 78 | |
| 79 | for (t = head; t != NULL; t = t->next) { |
| 80 | if (t->tag == tag) |
| 81 | return t; |
| 82 | } |
| 83 | return NULL; |
| 84 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 85 | |
| 86 | static int smpp_handle_deliver(struct esme *esme, struct msgb *msg) |
| 87 | { |
| 88 | struct deliver_sm_t deliver; |
| 89 | struct deliver_sm_resp_t deliver_r; |
| 90 | struct submit_sm_t submit; |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 91 | tlv_t *t; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 92 | int rc; |
| 93 | |
| 94 | memset(&deliver, 0, sizeof(deliver)); |
| 95 | SMPP34_UNPACK(rc, DELIVER_SM, &deliver, msgb_data(msg), msgb_length(msg)); |
| 96 | if (rc < 0) |
| 97 | return rc; |
| 98 | |
| 99 | INIT_RESP(DELIVER_SM_RESP, &deliver_r, &deliver); |
| 100 | |
| 101 | PACK_AND_SEND(esme, &deliver_r); |
| 102 | |
| 103 | memset(&submit, 0, sizeof(submit)); |
| 104 | submit.command_id = SUBMIT_SM; |
| 105 | submit.command_status = ESME_ROK; |
| 106 | submit.sequence_number = esme_inc_seq_nr(esme); |
| 107 | |
| 108 | submit.dest_addr_ton = deliver.source_addr_ton; |
| 109 | submit.dest_addr_npi = deliver.source_addr_npi; |
| 110 | memcpy(submit.destination_addr, deliver.source_addr, |
| 111 | OSMO_MIN(sizeof(submit.destination_addr), |
| 112 | sizeof(deliver.source_addr))); |
| 113 | |
| 114 | submit.source_addr_ton = deliver.dest_addr_ton; |
| 115 | submit.source_addr_npi = deliver.dest_addr_npi; |
| 116 | memcpy(submit.source_addr, deliver.destination_addr, |
| 117 | OSMO_MIN(sizeof(submit.source_addr), |
| 118 | sizeof(deliver.destination_addr))); |
| 119 | |
Pablo Neira Ayuso | eacb400 | 2017-08-07 14:01:35 +0100 | [diff] [blame] | 120 | /* Mirror delivery receipts as a delivery acknowledgements. */ |
| 121 | if (deliver.esm_class == 0x04) { |
| 122 | LOGP(DSMPP, LOGL_DEBUG, "%s\n", deliver.short_message); |
| 123 | submit.esm_class = 0x08; |
| 124 | } else { |
| 125 | submit.esm_class = deliver.esm_class; |
| 126 | } |
| 127 | |
Pablo Neira Ayuso | e2681c5 | 2017-08-07 14:01:23 +0100 | [diff] [blame] | 128 | submit.registered_delivery = deliver.registered_delivery; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 129 | submit.protocol_id = deliver.protocol_id; |
| 130 | submit.priority_flag = deliver.priority_flag; |
| 131 | memcpy(submit.schedule_delivery_time, deliver.schedule_delivery_time, |
| 132 | OSMO_MIN(sizeof(submit.schedule_delivery_time), |
| 133 | sizeof(deliver.schedule_delivery_time))); |
| 134 | memcpy(submit.validity_period, deliver.validity_period, |
| 135 | OSMO_MIN(sizeof(submit.validity_period), |
| 136 | sizeof(deliver.validity_period))); |
| 137 | submit.registered_delivery = deliver.registered_delivery; |
| 138 | submit.replace_if_present_flag = deliver.replace_if_present_flag; |
| 139 | submit.data_coding = deliver.data_coding; |
| 140 | submit.sm_default_msg_id = deliver.sm_default_msg_id; |
| 141 | submit.sm_length = deliver.sm_length; |
| 142 | memcpy(submit.short_message, deliver.short_message, |
| 143 | OSMO_MIN(sizeof(submit.short_message), |
| 144 | sizeof(deliver.short_message))); |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 145 | |
| 146 | /* FIXME: More TLV? */ |
| 147 | t = find_tlv(deliver.tlv, TLVID_user_message_reference); |
| 148 | if (t) { |
| 149 | tlv_t tlv; |
| 150 | |
| 151 | memset(&tlv, 0, sizeof(tlv)); |
| 152 | tlv.tag = TLVID_user_message_reference; |
| 153 | tlv.length = 2; |
| 154 | tlv.value.val16 = t->value.val16; |
| 155 | build_tlv(&submit.tlv, &tlv); |
| 156 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 157 | |
| 158 | return PACK_AND_SEND(esme, &submit); |
| 159 | } |
| 160 | |
| 161 | static int bind_transceiver(struct esme *esme) |
| 162 | { |
| 163 | struct bind_transceiver_t bind; |
| 164 | |
| 165 | memset(&bind, 0, sizeof(bind)); |
| 166 | bind.command_id = BIND_TRANSCEIVER; |
| 167 | bind.sequence_number = esme_inc_seq_nr(esme); |
| 168 | snprintf((char *)bind.system_id, sizeof(bind.system_id), "%s", esme->system_id); |
| 169 | snprintf((char *)bind.password, sizeof(bind.password), "%s", esme->password); |
| 170 | snprintf((char *)bind.system_type, sizeof(bind.system_type), "mirror"); |
| 171 | bind.interface_version = esme->smpp_version; |
| 172 | |
| 173 | return PACK_AND_SEND(esme, &bind); |
| 174 | } |
| 175 | |
| 176 | static int smpp_pdu_rx(struct esme *esme, struct msgb *msg) |
| 177 | { |
| 178 | uint32_t cmd_id = smpp_msgb_cmdid(msg); |
| 179 | int rc; |
| 180 | |
| 181 | switch (cmd_id) { |
| 182 | case DELIVER_SM: |
| 183 | rc = smpp_handle_deliver(esme, msg); |
| 184 | break; |
| 185 | default: |
Holger Hans Peter Freyther | 7672db3 | 2013-12-12 15:23:26 +0100 | [diff] [blame] | 186 | LOGP(DSMPP, LOGL_NOTICE, "unhandled case %d\n", cmd_id); |
| 187 | rc = 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 188 | break; |
| 189 | } |
| 190 | |
| 191 | return rc; |
| 192 | } |
| 193 | |
Harald Welte | 065b23a | 2021-10-25 08:18:26 +0200 | [diff] [blame] | 194 | static void esme_read_state_reset(struct esme *esme) |
| 195 | { |
| 196 | esme->read_msg = NULL; |
| 197 | esme->read_idx = 0; |
| 198 | esme->read_len = 0; |
| 199 | esme->read_state = READ_ST_IN_LEN; |
| 200 | } |
| 201 | |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 202 | /* FIXME: merge with smpp_smsc.c */ |
| 203 | static int esme_read_cb(struct osmo_fd *ofd) |
| 204 | { |
| 205 | struct esme *esme = ofd->data; |
| 206 | uint32_t len; |
| 207 | uint8_t *lenptr = (uint8_t *) &len; |
| 208 | uint8_t *cur; |
| 209 | struct msgb *msg; |
| 210 | int rdlen; |
| 211 | int rc; |
| 212 | |
| 213 | switch (esme->read_state) { |
| 214 | case READ_ST_IN_LEN: |
| 215 | rdlen = sizeof(uint32_t) - esme->read_idx; |
| 216 | rc = read(ofd->fd, lenptr + esme->read_idx, rdlen); |
| 217 | if (rc < 0) { |
| 218 | LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %d\n", |
| 219 | esme->system_id, rc); |
| 220 | } else if (rc == 0) { |
| 221 | goto dead_socket; |
| 222 | } else |
| 223 | esme->read_idx += rc; |
| 224 | if (esme->read_idx >= sizeof(uint32_t)) { |
| 225 | esme->read_len = ntohl(len); |
Harald Welte | 890ece1 | 2021-10-25 08:18:58 +0200 | [diff] [blame] | 226 | if (esme->read_len > 65535) { |
| 227 | /* unrealistic */ |
| 228 | goto dead_socket; |
| 229 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 230 | msg = msgb_alloc(esme->read_len, "SMPP Rx"); |
| 231 | if (!msg) |
| 232 | return -ENOMEM; |
| 233 | esme->read_msg = msg; |
| 234 | cur = msgb_put(msg, sizeof(uint32_t)); |
| 235 | memcpy(cur, lenptr, sizeof(uint32_t)); |
| 236 | esme->read_state = READ_ST_IN_MSG; |
| 237 | esme->read_idx = sizeof(uint32_t); |
| 238 | } |
| 239 | break; |
| 240 | case READ_ST_IN_MSG: |
| 241 | msg = esme->read_msg; |
| 242 | rdlen = esme->read_len - esme->read_idx; |
| 243 | rc = read(ofd->fd, msg->tail, OSMO_MIN(rdlen, msgb_tailroom(msg))); |
| 244 | if (rc < 0) { |
| 245 | LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %d\n", |
| 246 | esme->system_id, rc); |
| 247 | } else if (rc == 0) { |
| 248 | goto dead_socket; |
| 249 | } else { |
| 250 | esme->read_idx += rc; |
| 251 | msgb_put(msg, rc); |
| 252 | } |
| 253 | |
| 254 | if (esme->read_idx >= esme->read_len) { |
| 255 | rc = smpp_pdu_rx(esme, esme->read_msg); |
Harald Welte | 065b23a | 2021-10-25 08:18:26 +0200 | [diff] [blame] | 256 | esme_read_state_reset(esme); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 257 | } |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | return 0; |
| 262 | dead_socket: |
| 263 | msgb_free(esme->read_msg); |
| 264 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 265 | close(esme->wqueue.bfd.fd); |
| 266 | esme->wqueue.bfd.fd = -1; |
Harald Welte | 890ece1 | 2021-10-25 08:18:58 +0200 | [diff] [blame] | 267 | esme_read_state_reset(esme); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 268 | exit(2342); |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 273 | static int esme_write_cb(struct osmo_fd *ofd, struct msgb *msg) |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 274 | { |
| 275 | struct esme *esme = ofd->data; |
| 276 | int rc; |
| 277 | |
| 278 | rc = write(ofd->fd, msgb_data(msg), msgb_length(msg)); |
| 279 | if (rc == 0) { |
| 280 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 281 | close(esme->wqueue.bfd.fd); |
| 282 | esme->wqueue.bfd.fd = -1; |
| 283 | exit(99); |
| 284 | } else if (rc < msgb_length(msg)) { |
| 285 | LOGP(DSMPP, LOGL_ERROR, "[%s] Short write\n", esme->system_id); |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 286 | return 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 287 | } |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 288 | |
| 289 | return 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | static int smpp_esme_init(struct esme *esme, const char *host, uint16_t port) |
| 293 | { |
| 294 | int rc; |
| 295 | |
| 296 | if (port == 0) |
| 297 | port = 2775; |
| 298 | |
| 299 | esme->own_seq_nr = rand(); |
| 300 | esme_inc_seq_nr(esme); |
| 301 | osmo_wqueue_init(&esme->wqueue, 10); |
| 302 | esme->wqueue.bfd.data = esme; |
| 303 | esme->wqueue.read_cb = esme_read_cb; |
| 304 | esme->wqueue.write_cb = esme_write_cb; |
| 305 | |
| 306 | rc = osmo_sock_init_ofd(&esme->wqueue.bfd, AF_UNSPEC, SOCK_STREAM, |
| 307 | IPPROTO_TCP, host, port, OSMO_SOCK_F_CONNECT); |
| 308 | if (rc < 0) |
| 309 | return rc; |
| 310 | |
| 311 | return bind_transceiver(esme); |
| 312 | } |
| 313 | |
Neels Hofmeyr | 6a8b9c7 | 2018-03-22 15:51:22 +0100 | [diff] [blame] | 314 | static const struct log_info_cat smpp_mirror_default_categories[] = { |
| 315 | [DSMPP] = { |
| 316 | .name = "DSMPP", |
| 317 | .description = "SMPP interface for external SMS apps", |
| 318 | .enabled = 1, .loglevel = LOGL_DEBUG, |
| 319 | }, |
| 320 | }; |
| 321 | |
| 322 | const struct log_info log_info = { |
| 323 | .cat = smpp_mirror_default_categories, |
| 324 | .num_cat = ARRAY_SIZE(smpp_mirror_default_categories), |
| 325 | }; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 326 | |
| 327 | int main(int argc, char **argv) |
| 328 | { |
| 329 | struct esme esme; |
| 330 | char *host = "localhost"; |
| 331 | int port = 0; |
| 332 | int rc; |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 333 | void *ctx = talloc_named_const(NULL, 0, "smpp_mirror"); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 334 | |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 335 | msgb_talloc_ctx_init(ctx, 0); |
Neels Hofmeyr | 4c2d4ab | 2016-09-16 02:31:17 +0200 | [diff] [blame] | 336 | |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 337 | memset(&esme, 0, sizeof(esme)); |
| 338 | |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 339 | osmo_init_logging2(ctx, &log_info); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 340 | |
| 341 | snprintf((char *) esme.system_id, sizeof(esme.system_id), "mirror"); |
| 342 | snprintf((char *) esme.password, sizeof(esme.password), "mirror"); |
| 343 | esme.smpp_version = 0x34; |
| 344 | |
| 345 | if (argc >= 2) |
| 346 | host = argv[1]; |
| 347 | if (argc >= 3) |
| 348 | port = atoi(argv[2]); |
| 349 | |
| 350 | rc = smpp_esme_init(&esme, host, port); |
| 351 | if (rc < 0) |
| 352 | exit(1); |
| 353 | |
| 354 | while (1) { |
| 355 | osmo_select_main(0); |
| 356 | } |
| 357 | |
| 358 | exit(0); |
| 359 | } |