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 | |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 24 | |
| 25 | /* FIXME: merge with smpp_smsc.c */ |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 26 | |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 27 | static struct tlv_t *find_tlv(struct tlv_t *head, uint16_t tag) |
| 28 | { |
| 29 | struct tlv_t *t; |
| 30 | |
| 31 | for (t = head; t != NULL; t = t->next) { |
| 32 | if (t->tag == tag) |
| 33 | return t; |
| 34 | } |
| 35 | return NULL; |
| 36 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 37 | |
| 38 | static int smpp_handle_deliver(struct esme *esme, struct msgb *msg) |
| 39 | { |
| 40 | struct deliver_sm_t deliver; |
| 41 | struct deliver_sm_resp_t deliver_r; |
| 42 | struct submit_sm_t submit; |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 43 | tlv_t *t; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 44 | int rc; |
| 45 | |
| 46 | memset(&deliver, 0, sizeof(deliver)); |
| 47 | SMPP34_UNPACK(rc, DELIVER_SM, &deliver, msgb_data(msg), msgb_length(msg)); |
| 48 | if (rc < 0) |
| 49 | return rc; |
| 50 | |
| 51 | INIT_RESP(DELIVER_SM_RESP, &deliver_r, &deliver); |
| 52 | |
| 53 | PACK_AND_SEND(esme, &deliver_r); |
| 54 | |
| 55 | memset(&submit, 0, sizeof(submit)); |
| 56 | submit.command_id = SUBMIT_SM; |
| 57 | submit.command_status = ESME_ROK; |
| 58 | submit.sequence_number = esme_inc_seq_nr(esme); |
| 59 | |
| 60 | submit.dest_addr_ton = deliver.source_addr_ton; |
| 61 | submit.dest_addr_npi = deliver.source_addr_npi; |
| 62 | memcpy(submit.destination_addr, deliver.source_addr, |
| 63 | OSMO_MIN(sizeof(submit.destination_addr), |
| 64 | sizeof(deliver.source_addr))); |
| 65 | |
| 66 | submit.source_addr_ton = deliver.dest_addr_ton; |
| 67 | submit.source_addr_npi = deliver.dest_addr_npi; |
| 68 | memcpy(submit.source_addr, deliver.destination_addr, |
| 69 | OSMO_MIN(sizeof(submit.source_addr), |
| 70 | sizeof(deliver.destination_addr))); |
| 71 | |
Pablo Neira Ayuso | eacb400 | 2017-08-07 14:01:35 +0100 | [diff] [blame] | 72 | /* Mirror delivery receipts as a delivery acknowledgements. */ |
| 73 | if (deliver.esm_class == 0x04) { |
| 74 | LOGP(DSMPP, LOGL_DEBUG, "%s\n", deliver.short_message); |
| 75 | submit.esm_class = 0x08; |
| 76 | } else { |
| 77 | submit.esm_class = deliver.esm_class; |
| 78 | } |
| 79 | |
Pablo Neira Ayuso | e2681c5 | 2017-08-07 14:01:23 +0100 | [diff] [blame] | 80 | submit.registered_delivery = deliver.registered_delivery; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 81 | submit.protocol_id = deliver.protocol_id; |
| 82 | submit.priority_flag = deliver.priority_flag; |
| 83 | memcpy(submit.schedule_delivery_time, deliver.schedule_delivery_time, |
| 84 | OSMO_MIN(sizeof(submit.schedule_delivery_time), |
| 85 | sizeof(deliver.schedule_delivery_time))); |
| 86 | memcpy(submit.validity_period, deliver.validity_period, |
| 87 | OSMO_MIN(sizeof(submit.validity_period), |
| 88 | sizeof(deliver.validity_period))); |
| 89 | submit.registered_delivery = deliver.registered_delivery; |
| 90 | submit.replace_if_present_flag = deliver.replace_if_present_flag; |
| 91 | submit.data_coding = deliver.data_coding; |
| 92 | submit.sm_default_msg_id = deliver.sm_default_msg_id; |
| 93 | submit.sm_length = deliver.sm_length; |
| 94 | memcpy(submit.short_message, deliver.short_message, |
| 95 | OSMO_MIN(sizeof(submit.short_message), |
| 96 | sizeof(deliver.short_message))); |
Pablo Neira Ayuso | 59622b6 | 2017-08-07 14:01:28 +0100 | [diff] [blame] | 97 | |
| 98 | /* FIXME: More TLV? */ |
| 99 | t = find_tlv(deliver.tlv, TLVID_user_message_reference); |
| 100 | if (t) { |
| 101 | tlv_t tlv; |
| 102 | |
| 103 | memset(&tlv, 0, sizeof(tlv)); |
| 104 | tlv.tag = TLVID_user_message_reference; |
| 105 | tlv.length = 2; |
| 106 | tlv.value.val16 = t->value.val16; |
| 107 | build_tlv(&submit.tlv, &tlv); |
| 108 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 109 | |
| 110 | return PACK_AND_SEND(esme, &submit); |
| 111 | } |
| 112 | |
| 113 | static int bind_transceiver(struct esme *esme) |
| 114 | { |
| 115 | struct bind_transceiver_t bind; |
| 116 | |
| 117 | memset(&bind, 0, sizeof(bind)); |
| 118 | bind.command_id = BIND_TRANSCEIVER; |
| 119 | bind.sequence_number = esme_inc_seq_nr(esme); |
Vadim Yanitskiy | a810a28 | 2024-06-17 00:58:52 +0700 | [diff] [blame] | 120 | OSMO_STRLCPY_ARRAY(bind.system_id, esme->system_id); |
| 121 | OSMO_STRLCPY_ARRAY(bind.password, esme->password); |
| 122 | OSMO_STRLCPY_ARRAY(bind.system_type, "mirror"); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 123 | bind.interface_version = esme->smpp_version; |
| 124 | |
| 125 | return PACK_AND_SEND(esme, &bind); |
| 126 | } |
| 127 | |
| 128 | static int smpp_pdu_rx(struct esme *esme, struct msgb *msg) |
| 129 | { |
| 130 | uint32_t cmd_id = smpp_msgb_cmdid(msg); |
| 131 | int rc; |
| 132 | |
| 133 | switch (cmd_id) { |
| 134 | case DELIVER_SM: |
| 135 | rc = smpp_handle_deliver(esme, msg); |
| 136 | break; |
| 137 | default: |
Holger Hans Peter Freyther | 7672db3 | 2013-12-12 15:23:26 +0100 | [diff] [blame] | 138 | LOGP(DSMPP, LOGL_NOTICE, "unhandled case %d\n", cmd_id); |
| 139 | rc = 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 140 | break; |
| 141 | } |
| 142 | |
| 143 | return rc; |
| 144 | } |
| 145 | |
Harald Welte | 065b23a | 2021-10-25 08:18:26 +0200 | [diff] [blame] | 146 | static void esme_read_state_reset(struct esme *esme) |
| 147 | { |
| 148 | esme->read_msg = NULL; |
| 149 | esme->read_idx = 0; |
| 150 | esme->read_len = 0; |
| 151 | esme->read_state = READ_ST_IN_LEN; |
| 152 | } |
| 153 | |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 154 | /* FIXME: merge with smpp_smsc.c */ |
| 155 | static int esme_read_cb(struct osmo_fd *ofd) |
| 156 | { |
| 157 | struct esme *esme = ofd->data; |
| 158 | uint32_t len; |
| 159 | uint8_t *lenptr = (uint8_t *) &len; |
| 160 | uint8_t *cur; |
| 161 | struct msgb *msg; |
| 162 | int rdlen; |
| 163 | int rc; |
| 164 | |
| 165 | switch (esme->read_state) { |
| 166 | case READ_ST_IN_LEN: |
| 167 | rdlen = sizeof(uint32_t) - esme->read_idx; |
| 168 | rc = read(ofd->fd, lenptr + esme->read_idx, rdlen); |
| 169 | if (rc < 0) { |
Max | 62977d0 | 2022-08-01 22:50:52 +0700 | [diff] [blame] | 170 | LOGPESME(esme, LOGL_ERROR, "read returned %d\n", rc); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 171 | } else if (rc == 0) { |
| 172 | goto dead_socket; |
| 173 | } else |
| 174 | esme->read_idx += rc; |
| 175 | if (esme->read_idx >= sizeof(uint32_t)) { |
| 176 | esme->read_len = ntohl(len); |
Harald Welte | 890ece1 | 2021-10-25 08:18:58 +0200 | [diff] [blame] | 177 | if (esme->read_len > 65535) { |
| 178 | /* unrealistic */ |
| 179 | goto dead_socket; |
| 180 | } |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 181 | msg = msgb_alloc(esme->read_len, "SMPP Rx"); |
| 182 | if (!msg) |
| 183 | return -ENOMEM; |
| 184 | esme->read_msg = msg; |
| 185 | cur = msgb_put(msg, sizeof(uint32_t)); |
| 186 | memcpy(cur, lenptr, sizeof(uint32_t)); |
| 187 | esme->read_state = READ_ST_IN_MSG; |
| 188 | esme->read_idx = sizeof(uint32_t); |
| 189 | } |
| 190 | break; |
| 191 | case READ_ST_IN_MSG: |
| 192 | msg = esme->read_msg; |
| 193 | rdlen = esme->read_len - esme->read_idx; |
| 194 | rc = read(ofd->fd, msg->tail, OSMO_MIN(rdlen, msgb_tailroom(msg))); |
| 195 | if (rc < 0) { |
Max | 62977d0 | 2022-08-01 22:50:52 +0700 | [diff] [blame] | 196 | LOGPESME(esme, LOGL_ERROR, "read returned %d\n", rc); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 197 | } else if (rc == 0) { |
| 198 | goto dead_socket; |
| 199 | } else { |
| 200 | esme->read_idx += rc; |
| 201 | msgb_put(msg, rc); |
| 202 | } |
| 203 | |
| 204 | if (esme->read_idx >= esme->read_len) { |
| 205 | rc = smpp_pdu_rx(esme, esme->read_msg); |
Harald Welte | 065b23a | 2021-10-25 08:18:26 +0200 | [diff] [blame] | 206 | esme_read_state_reset(esme); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 207 | } |
| 208 | break; |
| 209 | } |
| 210 | |
| 211 | return 0; |
| 212 | dead_socket: |
| 213 | msgb_free(esme->read_msg); |
| 214 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 215 | close(esme->wqueue.bfd.fd); |
| 216 | esme->wqueue.bfd.fd = -1; |
Harald Welte | 890ece1 | 2021-10-25 08:18:58 +0200 | [diff] [blame] | 217 | esme_read_state_reset(esme); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 218 | exit(2342); |
| 219 | |
| 220 | return 0; |
| 221 | } |
| 222 | |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 223 | static int esme_write_cb(struct osmo_fd *ofd, struct msgb *msg) |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 224 | { |
| 225 | struct esme *esme = ofd->data; |
| 226 | int rc; |
| 227 | |
| 228 | rc = write(ofd->fd, msgb_data(msg), msgb_length(msg)); |
| 229 | if (rc == 0) { |
| 230 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 231 | close(esme->wqueue.bfd.fd); |
| 232 | esme->wqueue.bfd.fd = -1; |
| 233 | exit(99); |
| 234 | } else if (rc < msgb_length(msg)) { |
Max | 62977d0 | 2022-08-01 22:50:52 +0700 | [diff] [blame] | 235 | LOGPESME(esme, LOGL_ERROR, "Short write\n"); |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 236 | return 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 237 | } |
Harald Welte | 7b1d25a | 2015-01-01 12:32:03 +0100 | [diff] [blame] | 238 | |
| 239 | return 0; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | static int smpp_esme_init(struct esme *esme, const char *host, uint16_t port) |
| 243 | { |
| 244 | int rc; |
| 245 | |
| 246 | if (port == 0) |
Max | bb62416 | 2022-10-20 20:09:06 +0300 | [diff] [blame] | 247 | port = SMPP_PORT; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 248 | |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 249 | esme->wqueue.bfd.data = esme; |
| 250 | esme->wqueue.read_cb = esme_read_cb; |
| 251 | esme->wqueue.write_cb = esme_write_cb; |
| 252 | |
| 253 | rc = osmo_sock_init_ofd(&esme->wqueue.bfd, AF_UNSPEC, SOCK_STREAM, |
| 254 | IPPROTO_TCP, host, port, OSMO_SOCK_F_CONNECT); |
| 255 | if (rc < 0) |
| 256 | return rc; |
| 257 | |
| 258 | return bind_transceiver(esme); |
| 259 | } |
| 260 | |
Neels Hofmeyr | 6a8b9c7 | 2018-03-22 15:51:22 +0100 | [diff] [blame] | 261 | static const struct log_info_cat smpp_mirror_default_categories[] = { |
| 262 | [DSMPP] = { |
| 263 | .name = "DSMPP", |
| 264 | .description = "SMPP interface for external SMS apps", |
| 265 | .enabled = 1, .loglevel = LOGL_DEBUG, |
| 266 | }, |
| 267 | }; |
| 268 | |
| 269 | const struct log_info log_info = { |
| 270 | .cat = smpp_mirror_default_categories, |
| 271 | .num_cat = ARRAY_SIZE(smpp_mirror_default_categories), |
| 272 | }; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 273 | |
| 274 | int main(int argc, char **argv) |
| 275 | { |
Max | 366a340 | 2022-08-01 23:01:24 +0700 | [diff] [blame] | 276 | struct esme *esme; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 277 | char *host = "localhost"; |
| 278 | int port = 0; |
| 279 | int rc; |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 280 | void *ctx = talloc_named_const(NULL, 0, "smpp_mirror"); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 281 | |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 282 | msgb_talloc_ctx_init(ctx, 0); |
Neels Hofmeyr | 4c2d4ab | 2016-09-16 02:31:17 +0200 | [diff] [blame] | 283 | |
Neels Hofmeyr | 08b3828 | 2018-03-30 23:04:04 +0200 | [diff] [blame] | 284 | osmo_init_logging2(ctx, &log_info); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 285 | |
Max | 366a340 | 2022-08-01 23:01:24 +0700 | [diff] [blame] | 286 | esme = esme_alloc(ctx); |
| 287 | if (!esme) |
| 288 | exit(2); |
| 289 | |
Vadim Yanitskiy | a810a28 | 2024-06-17 00:58:52 +0700 | [diff] [blame] | 290 | OSMO_STRLCPY_ARRAY(esme->system_id, "mirror"); |
| 291 | OSMO_STRLCPY_ARRAY(esme->password, "mirror"); |
Max | 366a340 | 2022-08-01 23:01:24 +0700 | [diff] [blame] | 292 | esme->smpp_version = 0x34; |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 293 | |
| 294 | if (argc >= 2) |
| 295 | host = argv[1]; |
| 296 | if (argc >= 3) |
| 297 | port = atoi(argv[2]); |
| 298 | |
Max | 366a340 | 2022-08-01 23:01:24 +0700 | [diff] [blame] | 299 | rc = smpp_esme_init(esme, host, port); |
Harald Welte | c0de14d | 2012-11-23 23:35:01 +0100 | [diff] [blame] | 300 | if (rc < 0) |
| 301 | exit(1); |
| 302 | |
| 303 | while (1) { |
| 304 | osmo_select_main(0); |
| 305 | } |
| 306 | |
| 307 | exit(0); |
| 308 | } |