Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 1 | /* SMPP 3.4 interface, SMSC-side implementation */ |
| 2 | /* (C) 2012 by Harald Welte <laforge@gnumonks.org> |
| 3 | * |
Harald Welte | 66c92c5 | 2013-07-13 16:35:32 +0200 | [diff] [blame] | 4 | * All Rights Reserved |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 5 | * |
Harald Welte | 66c92c5 | 2013-07-13 16:35:32 +0200 | [diff] [blame] | 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU Affero General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (at your option) any later version. |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 10 | * |
Harald Welte | 66c92c5 | 2013-07-13 16:35:32 +0200 | [diff] [blame] | 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU Affero General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Affero General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <unistd.h> |
| 23 | #include <string.h> |
| 24 | #include <stdint.h> |
| 25 | #include <errno.h> |
Daniel Willmann | 13ef623 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 26 | #include <limits.h> |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 27 | |
| 28 | #include <sys/socket.h> |
| 29 | #include <netinet/in.h> |
| 30 | |
| 31 | #include <smpp34.h> |
| 32 | #include <smpp34_structs.h> |
| 33 | #include <smpp34_params.h> |
| 34 | |
| 35 | #include <osmocom/core/utils.h> |
| 36 | #include <osmocom/core/socket.h> |
| 37 | #include <osmocom/core/msgb.h> |
| 38 | #include <osmocom/core/logging.h> |
| 39 | #include <osmocom/core/write_queue.h> |
| 40 | #include <osmocom/core/talloc.h> |
| 41 | |
| 42 | #include "smpp_smsc.h" |
| 43 | |
| 44 | #include <openbsc/debug.h> |
Holger Hans Peter Freyther | 2edde4a | 2013-04-29 09:11:02 +0200 | [diff] [blame] | 45 | #include <openbsc/gsm_data.h> |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 46 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 47 | /*! \brief Ugly wrapper. libsmpp34 should do this itself! */ |
| 48 | #define SMPP34_UNPACK(rc, type, str, data, len) \ |
| 49 | memset(str, 0, sizeof(*str)); \ |
| 50 | rc = smpp34_unpack(type, str, data, len) |
| 51 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 52 | enum emse_bind { |
| 53 | ESME_BIND_RX = 0x01, |
| 54 | ESME_BIND_TX = 0x02, |
| 55 | }; |
| 56 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 57 | const struct value_string smpp_status_strs[] = { |
| 58 | { ESME_ROK, "No Error" }, |
| 59 | { ESME_RINVMSGLEN, "Message Length is invalid" }, |
| 60 | { ESME_RINVCMDLEN, "Command Length is invalid" }, |
| 61 | { ESME_RINVCMDID, "Invalid Command ID" }, |
| 62 | { ESME_RINVBNDSTS, "Incorrect BIND Status for given command" }, |
| 63 | { ESME_RALYBND, "ESME Already in Bound State" }, |
| 64 | { ESME_RINVPRTFLG, "Invalid Priority Flag" }, |
| 65 | { ESME_RINVREGDLVFLG, "Invalid Registered Delivery Flag" }, |
| 66 | { ESME_RSYSERR, "System Error" }, |
| 67 | { ESME_RINVSRCADR, "Invalid Source Address" }, |
| 68 | { ESME_RINVDSTADR, "Invalid Destination Address" }, |
| 69 | { ESME_RINVMSGID, "Message ID is invalid" }, |
| 70 | { ESME_RBINDFAIL, "Bind failed" }, |
| 71 | { ESME_RINVPASWD, "Invalid Password" }, |
| 72 | { ESME_RINVSYSID, "Invalid System ID" }, |
| 73 | { ESME_RCANCELFAIL, "Cancel SM Failed" }, |
| 74 | { ESME_RREPLACEFAIL, "Replace SM Failed" }, |
| 75 | { ESME_RMSGQFUL, "Message Queue Full" }, |
| 76 | { ESME_RINVSERTYP, "Invalid Service Type" }, |
| 77 | { ESME_RINVNUMDESTS, "Invalid number of destinations" }, |
| 78 | { ESME_RINVDLNAME, "Invalid Distribution List name" }, |
| 79 | { ESME_RINVDESTFLAG, "Destination flag is invalid" }, |
| 80 | { ESME_RINVSUBREP, "Invalid submit with replace request" }, |
| 81 | { ESME_RINVESMCLASS, "Invalid esm_class field data" }, |
| 82 | { ESME_RCNTSUBDL, "Cannot Submit to Distribution List" }, |
| 83 | { ESME_RSUBMITFAIL, "submit_sm or submit_multi failed" }, |
| 84 | { ESME_RINVSRCTON, "Invalid Source address TON" }, |
| 85 | { ESME_RINVSRCNPI, "Invalid Sourec address NPI" }, |
| 86 | { ESME_RINVDSTTON, "Invalid Destination address TON" }, |
| 87 | { ESME_RINVDSTNPI, "Invalid Desetination address NPI" }, |
| 88 | { ESME_RINVSYSTYP, "Invalid system_type field" }, |
| 89 | { ESME_RINVREPFLAG, "Invalid replace_if_present field" }, |
| 90 | { ESME_RINVNUMMSGS, "Invalid number of messages" }, |
| 91 | { ESME_RTHROTTLED, "Throttling error (ESME has exceeded message limits)" }, |
| 92 | { ESME_RINVSCHED, "Invalid Scheduled Delivery Time" }, |
| 93 | { ESME_RINVEXPIRY, "Invalid message validity period (Expiry time)" }, |
| 94 | { ESME_RINVDFTMSGID, "Predefined Message Invalid or Not Found" }, |
| 95 | { ESME_RX_T_APPN, "ESME Receiver Temporary App Error Code" }, |
| 96 | { ESME_RX_P_APPN, "ESME Receiver Permanent App Error Code" }, |
| 97 | { ESME_RX_R_APPN, "ESME Receiver Reject Message Error Code" }, |
| 98 | { ESME_RQUERYFAIL, "query_sm request failed" }, |
| 99 | { ESME_RINVOPTPARSTREAM,"Error in the optional part of the PDU Body" }, |
| 100 | { ESME_ROPTPARNOTALLWD, "Optional Parameter not allowed" }, |
| 101 | { ESME_RINVPARLEN, "Invalid Parameter Length" }, |
| 102 | { ESME_RMISSINGOPTPARAM,"Expected Optional Parameter missing" }, |
| 103 | { ESME_RINVOPTPARAMVAL, "Invalid Optional Parameter Value" }, |
| 104 | { ESME_RDELIVERYFAILURE,"Delivery Failure (used for data_sm_resp)" }, |
| 105 | { ESME_RUNKNOWNERR, "Unknown Error" }, |
| 106 | { 0, NULL } |
| 107 | }; |
| 108 | |
| 109 | /*! \brief compare if two SMPP addresses are equal */ |
| 110 | int smpp_addr_eq(const struct osmo_smpp_addr *a, |
| 111 | const struct osmo_smpp_addr *b) |
| 112 | { |
| 113 | if (a->ton == b->ton && |
| 114 | a->npi == b->npi && |
| 115 | !strcmp(a->addr, b->addr)) |
| 116 | return 1; |
| 117 | |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 122 | struct osmo_smpp_acl *smpp_acl_by_system_id(struct smsc *smsc, |
| 123 | const char *sys_id) |
| 124 | { |
| 125 | struct osmo_smpp_acl *acl; |
| 126 | |
| 127 | llist_for_each_entry(acl, &smsc->acl_list, list) { |
| 128 | if (!strcmp(acl->system_id, sys_id)) |
| 129 | return acl; |
| 130 | } |
| 131 | |
| 132 | return NULL; |
| 133 | } |
| 134 | |
| 135 | struct osmo_smpp_acl *smpp_acl_alloc(struct smsc *smsc, const char *sys_id) |
| 136 | { |
| 137 | struct osmo_smpp_acl *acl; |
| 138 | |
| 139 | if (strlen(sys_id) > SMPP_SYS_ID_LEN) |
| 140 | return NULL; |
| 141 | |
| 142 | if (smpp_acl_by_system_id(smsc, sys_id)) |
| 143 | return NULL; |
| 144 | |
| 145 | acl = talloc_zero(smsc, struct osmo_smpp_acl); |
| 146 | if (!acl) |
| 147 | return NULL; |
| 148 | |
| 149 | acl->smsc = smsc; |
| 150 | strcpy(acl->system_id, sys_id); |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 151 | INIT_LLIST_HEAD(&acl->route_list); |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 152 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 153 | llist_add_tail(&acl->list, &smsc->acl_list); |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 154 | |
| 155 | return acl; |
| 156 | } |
| 157 | |
| 158 | void smpp_acl_delete(struct osmo_smpp_acl *acl) |
| 159 | { |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 160 | struct osmo_smpp_route *r, *r2; |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 161 | |
| 162 | llist_del(&acl->list); |
| 163 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 164 | /* kill any active ESMEs */ |
| 165 | if (acl->esme) { |
| 166 | struct osmo_esme *esme = acl->esme; |
| 167 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 168 | close(esme->wqueue.bfd.fd); |
| 169 | esme->wqueue.bfd.fd = -1; |
| 170 | esme->acl = NULL; |
| 171 | smpp_esme_put(esme); |
| 172 | } |
| 173 | |
| 174 | /* delete all routes for this ACL */ |
| 175 | llist_for_each_entry_safe(r, r2, &acl->route_list, list) { |
| 176 | llist_del(&r->list); |
| 177 | llist_del(&r->global_list); |
| 178 | talloc_free(r); |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | talloc_free(acl); |
| 182 | } |
| 183 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 184 | static struct osmo_smpp_route *route_alloc(struct osmo_smpp_acl *acl) |
| 185 | { |
| 186 | struct osmo_smpp_route *r; |
| 187 | |
| 188 | r = talloc_zero(acl, struct osmo_smpp_route); |
| 189 | if (!r) |
| 190 | return NULL; |
| 191 | |
| 192 | llist_add_tail(&r->list, &acl->route_list); |
| 193 | llist_add_tail(&r->global_list, &acl->smsc->route_list); |
| 194 | |
| 195 | return r; |
| 196 | } |
| 197 | |
| 198 | int smpp_route_pfx_add(struct osmo_smpp_acl *acl, |
| 199 | const struct osmo_smpp_addr *pfx) |
| 200 | { |
| 201 | struct osmo_smpp_route *r; |
| 202 | |
| 203 | llist_for_each_entry(r, &acl->route_list, list) { |
| 204 | if (r->type == SMPP_ROUTE_PREFIX && |
| 205 | smpp_addr_eq(&r->u.prefix, pfx)) |
| 206 | return -EEXIST; |
| 207 | } |
| 208 | |
| 209 | r = route_alloc(acl); |
| 210 | if (!r) |
| 211 | return -ENOMEM; |
| 212 | r->type = SMPP_ROUTE_PREFIX; |
| 213 | r->acl = acl; |
| 214 | memcpy(&r->u.prefix, pfx, sizeof(r->u.prefix)); |
| 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | int smpp_route_pfx_del(struct osmo_smpp_acl *acl, |
| 220 | const struct osmo_smpp_addr *pfx) |
| 221 | { |
| 222 | struct osmo_smpp_route *r, *r2; |
| 223 | |
| 224 | llist_for_each_entry_safe(r, r2, &acl->route_list, list) { |
| 225 | if (r->type == SMPP_ROUTE_PREFIX && |
| 226 | smpp_addr_eq(&r->u.prefix, pfx)) { |
| 227 | llist_del(&r->list); |
| 228 | talloc_free(r); |
| 229 | return 0; |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | return -ENODEV; |
| 234 | } |
| 235 | |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 236 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 237 | /*! \brief increaes the use/reference count */ |
| 238 | void smpp_esme_get(struct osmo_esme *esme) |
| 239 | { |
| 240 | esme->use++; |
| 241 | } |
| 242 | |
| 243 | static void esme_destroy(struct osmo_esme *esme) |
| 244 | { |
| 245 | osmo_wqueue_clear(&esme->wqueue); |
| 246 | if (esme->wqueue.bfd.fd >= 0) { |
| 247 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 248 | close(esme->wqueue.bfd.fd); |
| 249 | } |
| 250 | llist_del(&esme->list); |
| 251 | talloc_free(esme); |
| 252 | } |
| 253 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 254 | static uint32_t esme_inc_seq_nr(struct osmo_esme *esme) |
| 255 | { |
| 256 | esme->own_seq_nr++; |
| 257 | if (esme->own_seq_nr > 0x7fffffff) |
| 258 | esme->own_seq_nr = 1; |
| 259 | |
| 260 | return esme->own_seq_nr; |
| 261 | } |
| 262 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 263 | /*! \brief decrease the use/reference count, free if it is 0 */ |
| 264 | void smpp_esme_put(struct osmo_esme *esme) |
| 265 | { |
| 266 | esme->use--; |
| 267 | if (esme->use <= 0) |
| 268 | esme_destroy(esme); |
| 269 | } |
| 270 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 271 | /*! \brief try to find a SMPP route (ESME) for given destination */ |
| 272 | struct osmo_esme * |
| 273 | smpp_route(const struct smsc *smsc, const struct osmo_smpp_addr *dest) |
| 274 | { |
| 275 | struct osmo_smpp_route *r; |
| 276 | struct osmo_smpp_acl *acl = NULL; |
| 277 | |
| 278 | DEBUGP(DSMPP, "Looking up route for (%u/%u/%s)\n", |
| 279 | dest->ton, dest->npi, dest->addr); |
| 280 | |
| 281 | /* search for a specific route */ |
| 282 | llist_for_each_entry(r, &smsc->route_list, global_list) { |
| 283 | switch (r->type) { |
| 284 | case SMPP_ROUTE_PREFIX: |
| 285 | DEBUGP(DSMPP, "Checking prefix route (%u/%u/%s)->%s\n", |
| 286 | r->u.prefix.ton, r->u.prefix.npi, r->u.prefix.addr, |
| 287 | r->acl->system_id); |
| 288 | if (r->u.prefix.ton == dest->ton && |
| 289 | r->u.prefix.npi == dest->npi && |
| 290 | !strncmp(r->u.prefix.addr, dest->addr, |
| 291 | strlen(r->u.prefix.addr))) { |
| 292 | DEBUGP(DSMPP, "Found prefix route ACL\n"); |
| 293 | acl = r->acl; |
| 294 | } |
| 295 | break; |
| 296 | default: |
| 297 | break; |
| 298 | } |
| 299 | |
| 300 | if (acl) |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | if (!acl) { |
| 305 | /* check for default route */ |
| 306 | if (smsc->def_route) { |
| 307 | DEBUGP(DSMPP, "Using existing default route\n"); |
| 308 | acl = smsc->def_route; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | if (acl && acl->esme) { |
| 313 | struct osmo_esme *esme; |
| 314 | DEBUGP(DSMPP, "ACL even has ESME, we can route to it!\n"); |
| 315 | esme = acl->esme; |
| 316 | if (esme->bind_flags & ESME_BIND_RX) |
| 317 | return esme; |
| 318 | else |
| 319 | LOGP(DSMPP, LOGL_NOTICE, "[%s] is matching route, " |
| 320 | "but not bound for Rx, discarding MO SMS\n", |
| 321 | esme->system_id); |
| 322 | } |
| 323 | |
| 324 | return NULL; |
| 325 | } |
| 326 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 327 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 328 | /*! \brief initialize the libsmpp34 data structure for a response */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 329 | #define INIT_RESP(type, resp, req) { \ |
| 330 | memset((resp), 0, sizeof(*(resp))); \ |
| 331 | (resp)->command_length = 0; \ |
| 332 | (resp)->command_id = type; \ |
| 333 | (resp)->command_status = ESME_ROK; \ |
| 334 | (resp)->sequence_number = (req)->sequence_number; \ |
| 335 | } |
| 336 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 337 | /*! \brief pack a libsmpp34 data strcutrure and send it to the ESME */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 338 | #define PACK_AND_SEND(esme, ptr) pack_and_send(esme, (ptr)->command_id, ptr) |
| 339 | static int pack_and_send(struct osmo_esme *esme, uint32_t type, void *ptr) |
| 340 | { |
| 341 | struct msgb *msg = msgb_alloc(4096, "SMPP_Tx"); |
| 342 | int rc, rlen; |
| 343 | if (!msg) |
| 344 | return -ENOMEM; |
| 345 | |
| 346 | rc = smpp34_pack(type, msg->tail, msgb_tailroom(msg), &rlen, ptr); |
| 347 | if (rc != 0) { |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 348 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error during smpp34_pack(): %s\n", |
| 349 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 350 | msgb_free(msg); |
| 351 | return -EINVAL; |
| 352 | } |
| 353 | msgb_put(msg, rlen); |
| 354 | |
| 355 | return osmo_wqueue_enqueue(&esme->wqueue, msg); |
| 356 | } |
| 357 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 358 | /*! \brief transmit a generic NACK to a remote ESME */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 359 | static int smpp_tx_gen_nack(struct osmo_esme *esme, uint32_t seq, uint32_t status) |
| 360 | { |
| 361 | struct generic_nack_t nack; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 362 | char buf[SMALL_BUFF]; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 363 | |
| 364 | nack.command_length = 0; |
| 365 | nack.command_id = GENERIC_NACK; |
| 366 | nack.sequence_number = seq; |
| 367 | nack.command_status = status; |
| 368 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 369 | LOGP(DSMPP, LOGL_ERROR, "[%s] Tx GENERIC NACK: %s\n", |
| 370 | esme->system_id, str_command_status(status, buf)); |
| 371 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 372 | return PACK_AND_SEND(esme, &nack); |
| 373 | } |
| 374 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 375 | /*! \brief retrieve SMPP command ID from a msgb */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 376 | static inline uint32_t smpp_msgb_cmdid(struct msgb *msg) |
| 377 | { |
| 378 | uint8_t *tmp = msgb_data(msg) + 4; |
| 379 | return ntohl(*(uint32_t *)tmp); |
| 380 | } |
| 381 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 382 | /*! \brief retrieve SMPP sequence number from a msgb */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 383 | static inline uint32_t smpp_msgb_seq(struct msgb *msg) |
| 384 | { |
| 385 | uint8_t *tmp = msgb_data(msg); |
| 386 | return ntohl(*(uint32_t *)tmp); |
| 387 | } |
| 388 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 389 | /*! \brief handle an incoming SMPP generic NACK */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 390 | static int smpp_handle_gen_nack(struct osmo_esme *esme, struct msgb *msg) |
| 391 | { |
| 392 | struct generic_nack_t nack; |
| 393 | char buf[SMALL_BUFF]; |
| 394 | int rc; |
| 395 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 396 | SMPP34_UNPACK(rc, GENERIC_NACK, &nack, msgb_data(msg), |
| 397 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 398 | if (rc < 0) { |
| 399 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 400 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 401 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 402 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 403 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 404 | LOGP(DSMPP, LOGL_ERROR, "[%s] Rx GENERIC NACK: %s\n", |
| 405 | esme->system_id, str_command_status(nack.command_status, buf)); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 410 | static int _process_bind(struct osmo_esme *esme, uint8_t if_version, |
| 411 | uint32_t bind_flags, const char *sys_id, |
| 412 | const char *passwd) |
| 413 | { |
| 414 | struct osmo_smpp_acl *acl; |
| 415 | |
| 416 | if (if_version != SMPP_VERSION) |
| 417 | return ESME_RSYSERR; |
| 418 | |
| 419 | if (esme->bind_flags) |
| 420 | return ESME_RALYBND; |
| 421 | |
| 422 | esme->smpp_version = if_version; |
| 423 | snprintf(esme->system_id, sizeof(esme->system_id), "%s", sys_id); |
| 424 | |
| 425 | acl = smpp_acl_by_system_id(esme->smsc, esme->system_id); |
| 426 | if (!esme->smsc->accept_all) { |
| 427 | if (!acl) { |
| 428 | /* This system is unknown */ |
| 429 | return ESME_RINVSYSID; |
| 430 | } else { |
| 431 | if (strlen(acl->passwd) && |
| 432 | strcmp(acl->passwd, passwd)) { |
| 433 | return ESME_RINVPASWD; |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | if (acl) { |
| 438 | esme->acl = acl; |
| 439 | acl->esme = esme; |
| 440 | } |
| 441 | |
| 442 | esme->bind_flags = bind_flags; |
| 443 | |
| 444 | return ESME_ROK; |
| 445 | } |
| 446 | |
| 447 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 448 | /*! \brief handle an incoming SMPP BIND RECEIVER */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 449 | static int smpp_handle_bind_rx(struct osmo_esme *esme, struct msgb *msg) |
| 450 | { |
| 451 | struct bind_receiver_t bind; |
| 452 | struct bind_receiver_resp_t bind_r; |
| 453 | int rc; |
| 454 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 455 | SMPP34_UNPACK(rc, BIND_RECEIVER, &bind, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 456 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 457 | if (rc < 0) { |
| 458 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 459 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 460 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 461 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 462 | |
| 463 | INIT_RESP(BIND_TRANSMITTER_RESP, &bind_r, &bind); |
| 464 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 465 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Rx from (Version %02x)\n", |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 466 | bind.system_id, bind.interface_version); |
| 467 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 468 | rc = _process_bind(esme, bind.interface_version, ESME_BIND_RX, |
| 469 | (const char *)bind.system_id, (const char *)bind.password); |
| 470 | bind_r.command_status = rc; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 471 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 472 | return PACK_AND_SEND(esme, &bind_r); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 473 | } |
| 474 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 475 | /*! \brief handle an incoming SMPP BIND TRANSMITTER */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 476 | static int smpp_handle_bind_tx(struct osmo_esme *esme, struct msgb *msg) |
| 477 | { |
| 478 | struct bind_transmitter_t bind; |
| 479 | struct bind_transmitter_resp_t bind_r; |
| 480 | struct tlv_t tlv; |
| 481 | int rc; |
| 482 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 483 | SMPP34_UNPACK(rc, BIND_TRANSMITTER, &bind, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 484 | msgb_length(msg)); |
| 485 | if (rc < 0) { |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 486 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 487 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 488 | return rc; |
| 489 | } |
| 490 | |
| 491 | INIT_RESP(BIND_TRANSMITTER_RESP, &bind_r, &bind); |
| 492 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 493 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Tx (Version %02x)\n", |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 494 | bind.system_id, bind.interface_version); |
| 495 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 496 | rc = _process_bind(esme, bind.interface_version, ESME_BIND_TX, |
| 497 | (const char *)bind.system_id, (const char *)bind.password); |
| 498 | bind_r.command_status = rc; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 499 | |
| 500 | /* build response */ |
| 501 | snprintf((char *)bind_r.system_id, sizeof(bind_r.system_id), "%s", |
| 502 | esme->smsc->system_id); |
| 503 | |
| 504 | /* add interface version TLV */ |
| 505 | tlv.tag = TLVID_sc_interface_version; |
| 506 | tlv.length = sizeof(uint8_t); |
| 507 | tlv.value.val16 = esme->smpp_version; |
| 508 | build_tlv(&bind_r.tlv, &tlv); |
| 509 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 510 | return PACK_AND_SEND(esme, &bind_r); |
| 511 | } |
| 512 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 513 | /*! \brief handle an incoming SMPP BIND TRANSCEIVER */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 514 | static int smpp_handle_bind_trx(struct osmo_esme *esme, struct msgb *msg) |
| 515 | { |
| 516 | struct bind_transceiver_t bind; |
| 517 | struct bind_transceiver_resp_t bind_r; |
| 518 | int rc; |
| 519 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 520 | SMPP34_UNPACK(rc, BIND_TRANSCEIVER, &bind, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 521 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 522 | if (rc < 0) { |
| 523 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 524 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 525 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 526 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 527 | |
Harald Welte | 3a3fa9d | 2013-05-26 14:40:14 +0200 | [diff] [blame] | 528 | INIT_RESP(BIND_TRANSCEIVER_RESP, &bind_r, &bind); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 529 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 530 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx BIND Trx (Version %02x)\n", |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 531 | bind.system_id, bind.interface_version); |
| 532 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 533 | rc = _process_bind(esme, bind.interface_version, ESME_BIND_RX|ESME_BIND_TX, |
| 534 | (const char *)bind.system_id, (const char *)bind.password); |
| 535 | bind_r.command_status = rc; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 536 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 537 | return PACK_AND_SEND(esme, &bind_r); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 538 | } |
| 539 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 540 | /*! \brief handle an incoming SMPP UNBIND */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 541 | static int smpp_handle_unbind(struct osmo_esme *esme, struct msgb *msg) |
| 542 | { |
| 543 | struct unbind_t unbind; |
| 544 | struct unbind_resp_t unbind_r; |
| 545 | int rc; |
| 546 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 547 | SMPP34_UNPACK(rc, UNBIND, &unbind, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 548 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 549 | if (rc < 0) { |
| 550 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 551 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 552 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 553 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 554 | |
| 555 | INIT_RESP(UNBIND_RESP, &unbind_r, &unbind); |
| 556 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 557 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx UNBIND\n", esme->system_id); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 558 | |
| 559 | if (esme->bind_flags == 0) { |
| 560 | unbind_r.command_status = ESME_RINVBNDSTS; |
| 561 | goto err; |
| 562 | } |
| 563 | |
| 564 | esme->bind_flags = 0; |
| 565 | err: |
| 566 | return PACK_AND_SEND(esme, &unbind_r); |
| 567 | } |
| 568 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 569 | /*! \brief handle an incoming SMPP ENQUIRE LINK */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 570 | static int smpp_handle_enq_link(struct osmo_esme *esme, struct msgb *msg) |
| 571 | { |
| 572 | struct enquire_link_t enq; |
| 573 | struct enquire_link_resp_t enq_r; |
| 574 | int rc; |
| 575 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 576 | SMPP34_UNPACK(rc, ENQUIRE_LINK, &enq, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 577 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 578 | if (rc < 0) { |
| 579 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 580 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 581 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 582 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 583 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 584 | LOGP(DSMPP, LOGL_DEBUG, "[%s] Rx Enquire Link\n", esme->system_id); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 585 | |
| 586 | INIT_RESP(ENQUIRE_LINK_RESP, &enq_r, &enq); |
| 587 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 588 | LOGP(DSMPP, LOGL_DEBUG, "[%s] Tx Enquire Link Response\n", esme->system_id); |
| 589 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 590 | return PACK_AND_SEND(esme, &enq_r); |
| 591 | } |
| 592 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 593 | /*! \brief send a SUBMIT-SM RESPONSE to a remote ESME */ |
Harald Welte | 4341309 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 594 | int smpp_tx_submit_r(struct osmo_esme *esme, uint32_t sequence_nr, |
| 595 | uint32_t command_status, char *msg_id) |
| 596 | { |
| 597 | struct submit_sm_resp_t submit_r; |
| 598 | |
| 599 | memset(&submit_r, 0, sizeof(submit_r)); |
| 600 | submit_r.command_length = 0; |
| 601 | submit_r.command_id = SUBMIT_SM_RESP; |
| 602 | submit_r.command_status = command_status; |
| 603 | submit_r.sequence_number= sequence_nr; |
Harald Welte | 475cb61 | 2012-11-09 12:51:44 +0100 | [diff] [blame] | 604 | snprintf((char *) submit_r.message_id, sizeof(submit_r.message_id), "%s", msg_id); |
Harald Welte | 4341309 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 605 | |
| 606 | return PACK_AND_SEND(esme, &submit_r); |
| 607 | } |
| 608 | |
Harald Welte | 475cb61 | 2012-11-09 12:51:44 +0100 | [diff] [blame] | 609 | static const struct value_string smpp_avail_strs[] = { |
| 610 | { 0, "Available" }, |
| 611 | { 1, "Denied" }, |
| 612 | { 2, "Unavailable" }, |
| 613 | { 0, NULL } |
| 614 | }; |
| 615 | |
| 616 | /*! \brief send an ALERT_NOTIFICATION to a remote ESME */ |
| 617 | int smpp_tx_alert(struct osmo_esme *esme, uint8_t ton, uint8_t npi, |
| 618 | const char *addr, uint8_t avail_status) |
| 619 | { |
| 620 | struct alert_notification_t alert; |
| 621 | struct tlv_t tlv; |
| 622 | |
| 623 | memset(&alert, 0, sizeof(alert)); |
| 624 | alert.command_length = 0; |
| 625 | alert.command_id = ALERT_NOTIFICATION; |
| 626 | alert.command_status = ESME_ROK; |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 627 | alert.sequence_number = esme_inc_seq_nr(esme); |
Harald Welte | 475cb61 | 2012-11-09 12:51:44 +0100 | [diff] [blame] | 628 | alert.source_addr_ton = ton; |
| 629 | alert.source_addr_npi = npi; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 630 | snprintf((char *)alert.source_addr, sizeof(alert.source_addr), "%s", addr); |
Harald Welte | 475cb61 | 2012-11-09 12:51:44 +0100 | [diff] [blame] | 631 | |
| 632 | tlv.tag = TLVID_ms_availability_status; |
| 633 | tlv.length = sizeof(uint8_t); |
| 634 | tlv.value.val08 = avail_status; |
| 635 | build_tlv(&alert.tlv, &tlv); |
| 636 | |
| 637 | LOGP(DSMPP, LOGL_DEBUG, "[%s] Tx ALERT_NOTIFICATION (%s/%u/%u): %s\n", |
| 638 | esme->system_id, alert.source_addr, alert.source_addr_ton, |
| 639 | alert.source_addr_npi, |
| 640 | get_value_string(smpp_avail_strs, avail_status)); |
| 641 | |
| 642 | return PACK_AND_SEND(esme, &alert); |
| 643 | } |
| 644 | |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 645 | /* \brief send a DELIVER-SM message to given ESME */ |
| 646 | int smpp_tx_deliver(struct osmo_esme *esme, struct deliver_sm_t *deliver) |
| 647 | { |
| 648 | deliver->sequence_number = esme_inc_seq_nr(esme); |
| 649 | |
| 650 | return PACK_AND_SEND(esme, deliver); |
| 651 | } |
| 652 | |
| 653 | /*! \brief handle an incoming SMPP DELIVER-SM RESPONSE */ |
| 654 | static int smpp_handle_deliver_resp(struct osmo_esme *esme, struct msgb *msg) |
| 655 | { |
| 656 | struct deliver_sm_resp_t deliver_r; |
| 657 | int rc; |
| 658 | |
| 659 | memset(&deliver_r, 0, sizeof(deliver_r)); |
| 660 | SMPP34_UNPACK(rc, DELIVER_SM_RESP, &deliver_r, msgb_data(msg), |
| 661 | msgb_length(msg)); |
| 662 | if (rc < 0) { |
| 663 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 664 | esme->system_id, smpp34_strerror); |
| 665 | return rc; |
| 666 | } |
| 667 | |
| 668 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx DELIVER-SM RESP (%s)\n", |
| 669 | esme->system_id, get_value_string(smpp_status_strs, |
| 670 | deliver_r.command_status)); |
| 671 | |
| 672 | return 0; |
| 673 | } |
| 674 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 675 | /*! \brief handle an incoming SMPP SUBMIT-SM */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 676 | static int smpp_handle_submit(struct osmo_esme *esme, struct msgb *msg) |
| 677 | { |
| 678 | struct submit_sm_t submit; |
| 679 | struct submit_sm_resp_t submit_r; |
| 680 | int rc; |
| 681 | |
Harald Welte | aecf4b9 | 2012-11-08 22:12:45 +0100 | [diff] [blame] | 682 | memset(&submit, 0, sizeof(submit)); |
| 683 | SMPP34_UNPACK(rc, SUBMIT_SM, &submit, msgb_data(msg), |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 684 | msgb_length(msg)); |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 685 | if (rc < 0) { |
| 686 | LOGP(DSMPP, LOGL_ERROR, "[%s] Error in smpp34_unpack():%s\n", |
| 687 | esme->system_id, smpp34_strerror); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 688 | return rc; |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 689 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 690 | |
| 691 | INIT_RESP(SUBMIT_SM_RESP, &submit_r, &submit); |
| 692 | |
| 693 | if (!(esme->bind_flags & ESME_BIND_TX)) { |
| 694 | submit_r.command_status = ESME_RINVBNDSTS; |
| 695 | return PACK_AND_SEND(esme, &submit_r); |
| 696 | } |
| 697 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 698 | LOGP(DSMPP, LOGL_INFO, "[%s] Rx SUBMIT-SM (%s/%u/%u)\n", |
| 699 | esme->system_id, submit.destination_addr, |
| 700 | submit.dest_addr_ton, submit.dest_addr_npi); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 701 | |
| 702 | INIT_RESP(SUBMIT_SM_RESP, &submit_r, &submit); |
| 703 | |
| 704 | rc = handle_smpp_submit(esme, &submit, &submit_r); |
| 705 | if (rc == 0) |
| 706 | return PACK_AND_SEND(esme, &submit_r); |
| 707 | |
| 708 | return rc; |
| 709 | } |
| 710 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 711 | /*! \brief one complete SMPP PDU from the ESME has been received */ |
Holger Hans Peter Freyther | 2edde4a | 2013-04-29 09:11:02 +0200 | [diff] [blame] | 712 | static int smpp_pdu_rx(struct osmo_esme *esme, struct msgb *msg __uses) |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 713 | { |
| 714 | uint32_t cmd_id = smpp_msgb_cmdid(msg); |
| 715 | int rc = 0; |
| 716 | |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 717 | LOGP(DSMPP, LOGL_DEBUG, "[%s] smpp_pdu_rx(%s)\n", esme->system_id, |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 718 | osmo_hexdump(msgb_data(msg), msgb_length(msg))); |
| 719 | |
| 720 | switch (cmd_id) { |
| 721 | case GENERIC_NACK: |
| 722 | rc = smpp_handle_gen_nack(esme, msg); |
| 723 | break; |
| 724 | case BIND_RECEIVER: |
| 725 | rc = smpp_handle_bind_rx(esme, msg); |
| 726 | break; |
| 727 | case BIND_TRANSMITTER: |
| 728 | rc = smpp_handle_bind_tx(esme, msg); |
| 729 | break; |
| 730 | case BIND_TRANSCEIVER: |
| 731 | rc = smpp_handle_bind_trx(esme, msg); |
| 732 | break; |
| 733 | case UNBIND: |
| 734 | rc = smpp_handle_unbind(esme, msg); |
| 735 | break; |
| 736 | case ENQUIRE_LINK: |
| 737 | rc = smpp_handle_enq_link(esme, msg); |
| 738 | break; |
| 739 | case SUBMIT_SM: |
| 740 | rc = smpp_handle_submit(esme, msg); |
| 741 | break; |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 742 | case DELIVER_SM_RESP: |
| 743 | rc = smpp_handle_deliver_resp(esme, msg); |
| 744 | break; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 745 | case DELIVER_SM: |
| 746 | break; |
| 747 | case DATA_SM: |
| 748 | break; |
| 749 | case CANCEL_SM: |
| 750 | case QUERY_SM: |
| 751 | case REPLACE_SM: |
| 752 | case SUBMIT_MULTI: |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 753 | LOGP(DSMPP, LOGL_NOTICE, "[%s] Unimplemented PDU Commmand " |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 754 | "0x%08x\n", esme->system_id, cmd_id); |
| 755 | break; |
| 756 | default: |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 757 | LOGP(DSMPP, LOGL_ERROR, "[%s] Unknown PDU Command 0x%08x\n", |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 758 | esme->system_id, cmd_id); |
| 759 | rc = smpp_tx_gen_nack(esme, smpp_msgb_seq(msg), ESME_RINVCMDID); |
| 760 | break; |
| 761 | } |
| 762 | |
| 763 | return rc; |
| 764 | } |
| 765 | |
Daniel Willmann | ef97254 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 766 | /* This macro should be called after a call to read() in the read_cb of an |
| 767 | * osmo_fd to properly check for errors. |
| 768 | * rc is the return value of read, err_label is the label to jump to in case of |
| 769 | * an error. The code there should handle closing the connection. |
| 770 | * FIXME: This code should go in libosmocore utils.h so it can be used by other |
| 771 | * projects as well. |
| 772 | * */ |
| 773 | #define OSMO_FD_CHECK_READ(rc, err_label) \ |
| 774 | if (rc < 0) { \ |
| 775 | /* EINTR is a non-fatal error, just try again */ \ |
| 776 | if (errno == EINTR) \ |
| 777 | return 0; \ |
| 778 | goto err_label; \ |
| 779 | } else if (rc == 0) { \ |
| 780 | goto err_label; \ |
| 781 | } |
| 782 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 783 | /* !\brief call-back when per-ESME TCP socket has some data to be read */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 784 | static int esme_link_read_cb(struct osmo_fd *ofd) |
| 785 | { |
| 786 | struct osmo_esme *esme = ofd->data; |
| 787 | uint32_t len; |
| 788 | uint8_t *lenptr = (uint8_t *) &len; |
| 789 | uint8_t *cur; |
| 790 | struct msgb *msg; |
Daniel Willmann | 13ef623 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 791 | ssize_t rdlen, rc; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 792 | |
| 793 | switch (esme->read_state) { |
| 794 | case READ_ST_IN_LEN: |
| 795 | rdlen = sizeof(uint32_t) - esme->read_idx; |
| 796 | rc = read(ofd->fd, lenptr + esme->read_idx, rdlen); |
Daniel Willmann | ef97254 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 797 | if (rc < 0) |
Daniel Willmann | 13ef623 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 798 | LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %zd (%s)\n", |
Daniel Willmann | ef97254 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 799 | esme->system_id, rc, strerror(errno)); |
| 800 | OSMO_FD_CHECK_READ(rc, dead_socket); |
| 801 | |
| 802 | esme->read_idx += rc; |
| 803 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 804 | if (esme->read_idx >= sizeof(uint32_t)) { |
| 805 | esme->read_len = ntohl(len); |
Daniel Willmann | 13ef623 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 806 | if (esme->read_len < 8 || esme->read_len > UINT16_MAX) { |
| 807 | LOGP(DSMPP, LOGL_ERROR, "[%s] length invalid %u\n", |
Daniel Willmann | 909e5da | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 808 | esme->system_id, esme->read_len); |
| 809 | goto dead_socket; |
| 810 | } |
| 811 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 812 | msg = msgb_alloc(esme->read_len, "SMPP Rx"); |
| 813 | if (!msg) |
| 814 | return -ENOMEM; |
| 815 | esme->read_msg = msg; |
| 816 | cur = msgb_put(msg, sizeof(uint32_t)); |
| 817 | memcpy(cur, lenptr, sizeof(uint32_t)); |
| 818 | esme->read_state = READ_ST_IN_MSG; |
| 819 | esme->read_idx = sizeof(uint32_t); |
| 820 | } |
| 821 | break; |
| 822 | case READ_ST_IN_MSG: |
| 823 | msg = esme->read_msg; |
| 824 | rdlen = esme->read_len - esme->read_idx; |
| 825 | rc = read(ofd->fd, msg->tail, OSMO_MIN(rdlen, msgb_tailroom(msg))); |
Daniel Willmann | ef97254 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 826 | if (rc < 0) |
Daniel Willmann | 13ef623 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 827 | LOGP(DSMPP, LOGL_ERROR, "[%s] read returned %zd (%s)\n", |
Daniel Willmann | ef97254 | 2014-01-17 15:17:36 +0100 | [diff] [blame] | 828 | esme->system_id, rc, strerror(errno)); |
| 829 | OSMO_FD_CHECK_READ(rc, dead_socket); |
| 830 | |
| 831 | esme->read_idx += rc; |
| 832 | msgb_put(msg, rc); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 833 | |
| 834 | if (esme->read_idx >= esme->read_len) { |
| 835 | rc = smpp_pdu_rx(esme, esme->read_msg); |
Holger Hans Peter Freyther | 2edde4a | 2013-04-29 09:11:02 +0200 | [diff] [blame] | 836 | msgb_free(esme->read_msg); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 837 | esme->read_msg = NULL; |
| 838 | esme->read_idx = 0; |
| 839 | esme->read_len = 0; |
| 840 | esme->read_state = READ_ST_IN_LEN; |
| 841 | } |
| 842 | break; |
| 843 | } |
| 844 | |
| 845 | return 0; |
| 846 | dead_socket: |
| 847 | msgb_free(esme->read_msg); |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 848 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 849 | close(esme->wqueue.bfd.fd); |
| 850 | esme->wqueue.bfd.fd = -1; |
| 851 | smpp_esme_put(esme); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 852 | |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | /* call-back of write queue once it wishes to write a message to the socket */ |
Holger Hans Peter Freyther | 1b39a8f | 2013-07-27 18:39:30 +0200 | [diff] [blame] | 857 | static int esme_link_write_cb(struct osmo_fd *ofd, struct msgb *msg) |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 858 | { |
| 859 | struct osmo_esme *esme = ofd->data; |
| 860 | int rc; |
| 861 | |
| 862 | rc = write(ofd->fd, msgb_data(msg), msgb_length(msg)); |
| 863 | if (rc == 0) { |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 864 | osmo_fd_unregister(&esme->wqueue.bfd); |
| 865 | close(esme->wqueue.bfd.fd); |
| 866 | esme->wqueue.bfd.fd = -1; |
| 867 | smpp_esme_put(esme); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 868 | } else if (rc < msgb_length(msg)) { |
Harald Welte | 6bc15a1 | 2012-11-09 13:02:49 +0100 | [diff] [blame] | 869 | LOGP(DSMPP, LOGL_ERROR, "[%s] Short write\n", esme->system_id); |
Holger Hans Peter Freyther | 1b39a8f | 2013-07-27 18:39:30 +0200 | [diff] [blame] | 870 | return -1; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 871 | } |
Holger Hans Peter Freyther | 1b39a8f | 2013-07-27 18:39:30 +0200 | [diff] [blame] | 872 | |
| 873 | return 0; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | /* callback for already-accepted new TCP socket */ |
| 877 | static int link_accept_cb(struct smsc *smsc, int fd, |
| 878 | struct sockaddr_storage *s, socklen_t s_len) |
| 879 | { |
| 880 | struct osmo_esme *esme = talloc_zero(smsc, struct osmo_esme); |
Holger Hans Peter Freyther | 1614129 | 2013-07-14 08:59:32 +0200 | [diff] [blame] | 881 | if (!esme) { |
| 882 | close(fd); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 883 | return -ENOMEM; |
Holger Hans Peter Freyther | 1614129 | 2013-07-14 08:59:32 +0200 | [diff] [blame] | 884 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 885 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 886 | smpp_esme_get(esme); |
Harald Welte | 475cb61 | 2012-11-09 12:51:44 +0100 | [diff] [blame] | 887 | esme->own_seq_nr = rand(); |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 888 | esme_inc_seq_nr(esme); |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 889 | esme->smsc = smsc; |
| 890 | osmo_wqueue_init(&esme->wqueue, 10); |
| 891 | esme->wqueue.bfd.fd = fd; |
| 892 | esme->wqueue.bfd.data = esme; |
| 893 | esme->wqueue.bfd.when = BSC_FD_READ; |
Holger Hans Peter Freyther | ee04abd | 2013-07-14 08:58:15 +0200 | [diff] [blame] | 894 | |
| 895 | if (osmo_fd_register(&esme->wqueue.bfd) != 0) { |
Holger Hans Peter Freyther | 1614129 | 2013-07-14 08:59:32 +0200 | [diff] [blame] | 896 | close(fd); |
Holger Hans Peter Freyther | ee04abd | 2013-07-14 08:58:15 +0200 | [diff] [blame] | 897 | talloc_free(esme); |
| 898 | return -EIO; |
| 899 | } |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 900 | |
| 901 | esme->wqueue.read_cb = esme_link_read_cb; |
| 902 | esme->wqueue.write_cb = esme_link_write_cb; |
| 903 | |
| 904 | esme->sa_len = OSMO_MIN(sizeof(esme->sa), s_len); |
| 905 | memcpy(&esme->sa, s, esme->sa_len); |
| 906 | |
| 907 | llist_add_tail(&esme->list, &smsc->esme_list); |
| 908 | |
| 909 | return 0; |
| 910 | } |
| 911 | |
| 912 | /* callback of listening TCP socket */ |
| 913 | static int smsc_fd_cb(struct osmo_fd *ofd, unsigned int what) |
| 914 | { |
| 915 | int rc; |
| 916 | struct sockaddr_storage sa; |
| 917 | socklen_t sa_len = sizeof(sa); |
| 918 | |
| 919 | rc = accept(ofd->fd, (struct sockaddr *)&sa, &sa_len); |
| 920 | if (rc < 0) { |
| 921 | LOGP(DSMPP, LOGL_ERROR, "Accept returns %d (%s)\n", |
| 922 | rc, strerror(errno)); |
| 923 | return rc; |
| 924 | } |
| 925 | return link_accept_cb(ofd->data, rc, &sa, sa_len); |
| 926 | } |
| 927 | |
Harald Welte | bf6d98e | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 928 | /*! \brief Initialize the SMSC-side SMPP implementation */ |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 929 | int smpp_smsc_init(struct smsc *smsc, uint16_t port) |
| 930 | { |
| 931 | int rc; |
| 932 | |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 933 | /* default port for SMPP */ |
| 934 | if (port == 0) |
| 935 | port = 2775; |
| 936 | |
| 937 | /* This will not work if we were to actually ever use FD 0 |
| 938 | * (stdin) for this ... */ |
| 939 | if (smsc->listen_ofd.fd <= 0) { |
| 940 | INIT_LLIST_HEAD(&smsc->esme_list); |
| 941 | INIT_LLIST_HEAD(&smsc->acl_list); |
Harald Welte | 691ce33 | 2012-11-23 19:02:37 +0100 | [diff] [blame] | 942 | INIT_LLIST_HEAD(&smsc->route_list); |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 943 | smsc->listen_ofd.data = smsc; |
| 944 | smsc->listen_ofd.cb = smsc_fd_cb; |
| 945 | } else { |
| 946 | close(smsc->listen_ofd.fd); |
| 947 | osmo_fd_unregister(&smsc->listen_ofd); |
| 948 | } |
| 949 | |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 950 | rc = osmo_sock_init_ofd(&smsc->listen_ofd, AF_UNSPEC, SOCK_STREAM, |
Harald Welte | b7dd661 | 2012-11-20 22:22:04 +0100 | [diff] [blame] | 951 | IPPROTO_TCP, NULL, port, |
| 952 | OSMO_SOCK_F_BIND); |
| 953 | |
| 954 | /* if there is an error, try to re-bind to the old port */ |
| 955 | if (rc < 0) { |
| 956 | rc = osmo_sock_init_ofd(&smsc->listen_ofd, AF_UNSPEC, |
| 957 | SOCK_STREAM, IPPROTO_TCP, NULL, |
| 958 | smsc->listen_port, OSMO_SOCK_F_BIND); |
| 959 | } else |
| 960 | smsc->listen_port = port; |
Harald Welte | 2dba82d | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 961 | |
| 962 | return rc; |
| 963 | } |