/* OpenBSC SMPP 3.4 interface, SMSC-side implementation */ /* (C) 2012-2022 by Harald Welte * * All Rights Reserved * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define VSUB_USE_SMPP "SMPP" #define VSUB_USE_SMPP_CMD "SMPP-cmd" /* talloc integration for libsmpp34 */ static struct smsc *g_smsc; static void *smpp34_talloc_malloc(size_t sz) { return talloc_size(g_smsc, sz); } static void *smpp34_talloc_realloc(void *ptr, size_t sz) { return talloc_realloc_size(g_smsc, ptr, sz); } static void smpp34_talloc_free(void *ptr) { talloc_free(ptr); } static const struct smpp34_memory_functions smpp34_talloc = { .malloc_fun = smpp34_talloc_malloc, .realloc_fun = smpp34_talloc_realloc, .free_fun = smpp34_talloc_free, }; /*! \brief find vlr_subscr for a given SMPP NPI/TON/Address */ static struct vlr_subscr *subscr_by_dst(struct gsm_network *net, uint8_t npi, uint8_t ton, const char *addr) { struct vlr_subscr *vsub = NULL; switch (npi) { case NPI_Land_Mobile_E212: vsub = vlr_subscr_find_by_imsi(net->vlr, addr, VSUB_USE_SMPP); break; case NPI_ISDN_E163_E164: case NPI_Private: vsub = vlr_subscr_find_by_msisdn(net->vlr, addr, VSUB_USE_SMPP); break; default: LOGP(DSMPP, LOGL_NOTICE, "Unsupported NPI: %u\n", npi); break; } log_set_context(LOG_CTX_VLR_SUBSCR, vsub); return vsub; } static int smpp34_submit_tlv_msg_payload(const struct tlv_t *t, const struct submit_sm_t *submit, const uint8_t **sms_msg, unsigned int *sms_msg_len) { if (submit->sm_length) { LOGP(DLSMS, LOGL_ERROR, "SMPP cannot have payload in TLV _and_ in the header\n"); return -1; } *sms_msg = t->value.octet; *sms_msg_len = t->length; return 0; } /*! \brief convert from submit_sm_t to gsm_sms */ static int submit_to_sms(struct gsm_sms **psms, struct gsm_network *net, const struct submit_sm_t *submit) { time_t t_now = time(NULL); time_t t_validity_absolute; const uint8_t *sms_msg = NULL; unsigned int sms_msg_len = 0; struct vlr_subscr *dest; uint16_t msg_ref = 0; struct gsm_sms *sms; struct tlv_t *t; int mode; int can_store_sms = ((submit->esm_class & SMPP34_MSG_MODE_MASK) != 2); /* != forward mode */ dest = subscr_by_dst(net, submit->dest_addr_npi, submit->dest_addr_ton, (const char *)submit->destination_addr); if (!dest && !can_store_sms) { LOGP(DLSMS, LOGL_NOTICE, "SMPP SUBMIT-SM for unknown subscriber: " "%s (NPI=%u)\n", submit->destination_addr, submit->dest_addr_npi); return ESME_RINVDSTADR; } smpp34_tlv_for_each(t, submit->tlv) { switch (t->tag) { case TLVID_message_payload: if (smpp34_submit_tlv_msg_payload(t, submit, &sms_msg, &sms_msg_len) < 0) { if (dest) vlr_subscr_put(dest, VSUB_USE_SMPP); return ESME_ROPTPARNOTALLWD; } break; case TLVID_user_message_reference: msg_ref = t->value.val16; break; default: break; } } if (!sms_msg) { if (submit->sm_length > 0 && submit->sm_length < 255) { sms_msg = submit->short_message; sms_msg_len = submit->sm_length; } else { LOGP(DLSMS, LOGL_ERROR, "SMPP neither message payload nor valid sm_length.\n"); if (dest) vlr_subscr_put(dest, VSUB_USE_SMPP); return ESME_RINVPARLEN; } } sms = sms_alloc(); sms->source = SMS_SOURCE_SMPP; sms->smpp.sequence_nr = submit->sequence_number; sms->status_rep_req = submit->registered_delivery; sms->msg_ref = msg_ref; /* fill in the destination address */ sms->receiver = dest; if (dest) { /* Replace use count from above subscr_by_dst (VSUB_USE_SMPP) by the sms->receiver use count * (VSUB_USE_SMS_RECEIVER) */ vlr_subscr_get(sms->receiver, VSUB_USE_SMS_RECEIVER); vlr_subscr_put(dest, VSUB_USE_SMPP); } sms->dst.ton = submit->dest_addr_ton; sms->dst.npi = submit->dest_addr_npi; if (dest) OSMO_STRLCPY_ARRAY(sms->dst.addr, dest->msisdn); else OSMO_STRLCPY_ARRAY(sms->dst.addr, (const char *)submit->destination_addr); /* fill in the source address */ sms->src.ton = submit->source_addr_ton; sms->src.npi = submit->source_addr_npi; OSMO_STRLCPY_ARRAY(sms->src.addr, (char *)submit->source_addr); if (submit->esm_class == SMPP34_DELIVERY_ACK) sms->is_report = true; if (submit->esm_class & SMPP34_UDHI_IND) sms->ud_hdr_ind = 1; if (submit->esm_class & SMPP34_REPLY_PATH) { sms->reply_path_req = 1; #warning Implement reply path } if (submit->data_coding == 0x00 || /* SMSC default */ submit->data_coding == 0x01) { /* GSM default alphabet */ sms->data_coding_scheme = GSM338_DCS_1111_7BIT; mode = MODE_7BIT; } else if ((submit->data_coding & 0xFC) == 0xF0) { /* 03.38 DCS default */ /* pass DCS 1:1 through from SMPP to GSM */ sms->data_coding_scheme = submit->data_coding; mode = MODE_7BIT; } else if (submit->data_coding == 0x02 || submit->data_coding == 0x04) { /* 8-bit binary */ sms->data_coding_scheme = GSM338_DCS_1111_8BIT_DATA; mode = MODE_8BIT; } else if ((submit->data_coding & 0xFC) == 0xF4) { /* 03.38 DCS 8bit */ /* pass DCS 1:1 through from SMPP to GSM */ sms->data_coding_scheme = submit->data_coding; mode = MODE_8BIT; } else if (submit->data_coding == 0x08) { /* UCS-2 */ sms->data_coding_scheme = (2 << 2); mode = MODE_8BIT; } else { sms_free(sms); LOGP(DLSMS, LOGL_ERROR, "SMPP Unknown Data Coding 0x%02x\n", submit->data_coding); return ESME_RUNKNOWNERR; } if (mode == MODE_7BIT) { unsigned int ud_len = 0, padbits = 0; sms->data_coding_scheme = GSM338_DCS_1111_7BIT; if (sms->ud_hdr_ind) { ud_len = *sms_msg + 1; if (ud_len > sms_msg_len) { sms_free(sms); LOGP(DLSMS, LOGL_ERROR, "invalid ud_len=%u > sms_msg_len=%u\n", ud_len, sms_msg_len); return ESME_RINVPARLEN; } printf("copying %u bytes user data...\n", ud_len); memcpy(sms->user_data, sms_msg, OSMO_MIN(ud_len, sizeof(sms->user_data))); sms_msg += ud_len; sms_msg_len -= ud_len; padbits = 7 - (ud_len % 7); } gsm_septet_pack(sms->user_data+ud_len, sms_msg, sms_msg_len, padbits); sms->user_data_len = (ud_len*8 + padbits)/7 + sms_msg_len;/* SEPTETS */ /* FIXME: sms->text */ } else { memcpy(sms->user_data, sms_msg, sms_msg_len); sms->user_data_len = sms_msg_len; } t_validity_absolute = smpp_parse_time_format((const char *) submit->validity_period, &t_now); if (!t_validity_absolute) sms->validity_minutes = net->sms_queue_cfg->default_validity_mins; else sms->validity_minutes = (t_validity_absolute - t_now) / 60; if (sms->validity_minutes < net->sms_queue_cfg->minimum_validity_mins) { LOGP(DLSMS, LOGL_INFO, "SMS to %s: Overriding ESME-provided validity period (%lu) " "with minimum SMSC validity period (%u) minutes\n", submit->destination_addr, sms->validity_minutes, net->sms_queue_cfg->minimum_validity_mins); sms->validity_minutes = net->sms_queue_cfg->minimum_validity_mins; } *psms = sms; return ESME_ROK; } /*! \brief handle incoming libsmpp34 ssubmit_sm_t from remote ESME */ int handle_smpp_submit(struct smpp_esme *esme, struct submit_sm_t *submit, struct submit_sm_resp_t *submit_r) { struct gsm_sms *sms; struct gsm_network *net = esme->smsc->priv; struct sms_signal_data sig; int rc = -1; rc = submit_to_sms(&sms, net, submit); if (rc != ESME_ROK) { submit_r->command_status = rc; return 0; } smpp_esme_get(esme); sms->smpp.esme = esme; sms->protocol_id = submit->protocol_id; switch (submit->esm_class & SMPP34_MSG_MODE_MASK) { case 0: /* default */ case 1: /* datagram */ case 3: /* store-and-forward */ rc = db_sms_store(sms); sms_free(sms); sms = NULL; if (rc < 0) { LOGP(DLSMS, LOGL_ERROR, "SMPP SUBMIT-SM: Unable to " "store SMS in database\n"); submit_r->command_status = ESME_RSYSERR; return 0; } strcpy((char *)submit_r->message_id, "msg_id_not_implemented"); LOGP(DLSMS, LOGL_INFO, "SMPP SUBMIT-SM: Stored in DB\n"); memset(&sig, 0, sizeof(sig)); osmo_signal_dispatch(SS_SMS, S_SMS_SUBMITTED, &sig); rc = 0; break; case 2: /* forward (i.e. transaction) mode */ LOGP(DLSMS, LOGL_DEBUG, "SMPP SUBMIT-SM: Forwarding in " "real time (Transaction/Forward mode)\n"); sms->smpp.transaction_mode = 1; gsm411_send_sms(net, sms->receiver, sms); rc = 1; /* don't send any response yet */ break; } return rc; } static void alert_all_esme(struct smsc *smsc, struct vlr_subscr *vsub, uint8_t smpp_avail_status) { struct smpp_esme *esme; llist_for_each_entry(esme, &smsc->esme_list, list) { /* we currently send an alert notification to each ESME that is * connected, and do not require a (non-existent) delivery * pending flag to be set before. */ if (!esme->bind_flags) { LOGP(DSMPP, LOGL_DEBUG, "ESME is not (yet) bound, skipping alert\n"); continue; } if (esme->acl && !esme->acl->alert_notifications) { LOGPESME(esme->esme, LOGL_DEBUG, "is not set to receive Alert Notifications\n"); continue; } if (esme->acl && esme->acl->deliver_src_imsi) { smpp_tx_alert(esme, TON_Subscriber_Number, NPI_Land_Mobile_E212, vsub->imsi, smpp_avail_status); } else { smpp_tx_alert(esme, TON_Network_Specific, NPI_ISDN_E163_E164, vsub->msisdn, smpp_avail_status); } } } /*! \brief signal handler for status of attempted SMS deliveries */ static int smpp_sms_cb(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data) { struct sms_signal_data *sig_sms = signal_data; struct gsm_sms *sms = sig_sms->sms; struct smsc *smsc = handler_data; int rc = 0; if (!sms) return 0; if (sms->source != SMS_SOURCE_SMPP) return 0; switch (signal) { case S_SMS_MEM_EXCEEDED: /* fall-through: There is no ESME_Rxxx result code to * indicate a MEMORY EXCEEDED in transaction mode back * to the ESME */ case S_SMS_UNKNOWN_ERROR: if (sms->smpp.transaction_mode) { /* Send back the SUBMIT-SM response with appropriate error */ LOGP(DLSMS, LOGL_INFO, "SMPP SUBMIT-SM: Error\n"); rc = smpp_tx_submit_r(sms->smpp.esme, sms->smpp.sequence_nr, ESME_RDELIVERYFAILURE, sms->smpp.msg_id); } break; case S_SMS_DELIVERED: /* SMS layer tells us the delivery has been completed */ if (sms->smpp.transaction_mode) { /* Send back the SUBMIT-SM response */ LOGP(DLSMS, LOGL_INFO, "SMPP SUBMIT-SM: Success\n"); rc = smpp_tx_submit_r(sms->smpp.esme, sms->smpp.sequence_nr, ESME_ROK, sms->smpp.msg_id); } break; case S_SMS_SMMA: if (!sig_sms->trans || !sig_sms->trans->vsub) { /* SMMA without a subscriber? strange... */ LOGP(DLSMS, LOGL_NOTICE, "SMMA without subscriber?\n"); break; } /* There's no real 1:1 match for SMMA in SMPP. However, * an ALERT NOTIFICATION seems to be the most logical * choice */ alert_all_esme(smsc, sig_sms->trans->vsub, 0); break; } return rc; } /*! \brief signal handler for subscriber related signals */ static int smpp_subscr_cb(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data) { struct vlr_subscr *vsub = signal_data; struct smsc *smsc = handler_data; uint8_t smpp_avail_status; /* determine the smpp_avail_status depending on attach/detach */ switch (signal) { case S_SUBSCR_ATTACHED: smpp_avail_status = 0; break; case S_SUBSCR_DETACHED: smpp_avail_status = 2; break; default: return 0; } alert_all_esme(smsc, vsub, smpp_avail_status); return 0; } /* GSM 03.38 6.2.1 Character expanding (no decode!) */ static int gsm_7bit_expand(char *text, const uint8_t *user_data, uint8_t septet_l, uint8_t ud_hdr_ind) { int i = 0; int shift = 0; uint8_t c; /* skip the user data header */ if (ud_hdr_ind) { /* get user data header length + 1 (for the 'user data header length'-field) */ shift = ((user_data[0] + 1) * 8) / 7; if ((((user_data[0] + 1) * 8) % 7) != 0) shift++; septet_l = septet_l - shift; } for (i = 0; i < septet_l; i++) { c = ((user_data[((i + shift) * 7 + 7) >> 3] << (7 - (((i + shift) * 7 + 7) & 7))) | (user_data[((i + shift) * 7) >> 3] >> (((i + shift) * 7) & 7))) & 0x7f; *(text++) = c; } *text = '\0'; return i; } /* FIXME: libsmpp34 helpers, they should be part of libsmpp34! */ void append_tlv(tlv_t **req_tlv, uint16_t tag, const uint8_t *data, uint16_t len) { tlv_t tlv; memset(&tlv, 0, sizeof(tlv)); tlv.tag = tag; tlv.length = len; memcpy(tlv.value.octet, data, tlv.length); build_tlv(req_tlv, &tlv); } void append_tlv_u8(tlv_t **req_tlv, uint16_t tag, uint8_t val) { tlv_t tlv; memset(&tlv, 0, sizeof(tlv)); tlv.tag = tag; tlv.length = 1; tlv.value.val08 = val; build_tlv(req_tlv, &tlv); } void append_tlv_u16(tlv_t **req_tlv, uint16_t tag, uint16_t val) { tlv_t tlv; memset(&tlv, 0, sizeof(tlv)); tlv.tag = tag; tlv.length = 2; tlv.value.val16 = val; build_tlv(req_tlv, &tlv); } #if BEFORE_MSCSPLIT /* We currently have no lchan information. Re-add after A-interface, see OS#2390. */ /* Append the Osmocom vendor-specific additional TLVs to a SMPP msg */ static void append_osmo_tlvs(tlv_t **req_tlv, const struct gsm_lchan *lchan) { int idx = calc_initial_idx(ARRAY_SIZE(lchan->meas_rep), lchan->meas_rep_idx, 1); const struct gsm_meas_rep *mr = &lchan->meas_rep[idx]; const struct gsm_meas_rep_unidir *ul_meas = &mr->ul; const struct gsm_meas_rep_unidir *dl_meas = &mr->dl; /* Osmocom vendor-specific SMPP34 extensions */ append_tlv_u16(req_tlv, TLVID_osmo_arfcn, lchan->ts->trx->arfcn); if (mr->flags & MEAS_REP_F_MS_L1) { uint8_t ms_dbm; append_tlv_u8(req_tlv, TLVID_osmo_ta, mr->ms_l1.ta); ms_dbm = ms_pwr_dbm(lchan->ts->trx->bts->band, mr->ms_l1.pwr); append_tlv_u8(req_tlv, TLVID_osmo_ms_l1_txpwr, ms_dbm); } else if (mr->flags & MEAS_REP_F_MS_TO) /* Save Timing Offset field = MS Timing Offset + 63 */ append_tlv_u8(req_tlv, TLVID_osmo_ta, mr->ms_timing_offset + 63); append_tlv_u16(req_tlv, TLVID_osmo_rxlev_ul, rxlev2dbm(ul_meas->full.rx_lev)); append_tlv_u8(req_tlv, TLVID_osmo_rxqual_ul, ul_meas->full.rx_qual); if (mr->flags & MEAS_REP_F_DL_VALID) { append_tlv_u16(req_tlv, TLVID_osmo_rxlev_dl, rxlev2dbm(dl_meas->full.rx_lev)); append_tlv_u8(req_tlv, TLVID_osmo_rxqual_dl, dl_meas->full.rx_qual); } if (lchan->conn && lchan->conn->vsub) { struct vlr_subscr *vsub = lchan->conn->vsub; size_t imei_len = strlen(vsub->imei); if (imei_len) append_tlv(req_tlv, TLVID_osmo_imei, (uint8_t *)vsub->imei, imei_len+1); } } #endif struct { uint32_t smpp_status_code; uint8_t gsm411_cause; } smpp_to_gsm411_err_array[] = { /* Seems like most phones don't care about the failure cause, * although some will display a different notification for * GSM411_RP_CAUSE_MO_NUM_UNASSIGNED * Some provoke a display of "Try again later" * while others a more definitive "Message sending failed" */ { ESME_RSYSERR, GSM411_RP_CAUSE_MO_DEST_OUT_OF_ORDER }, { ESME_RINVDSTADR, GSM411_RP_CAUSE_MO_NUM_UNASSIGNED }, { ESME_RMSGQFUL, GSM411_RP_CAUSE_MO_CONGESTION }, { ESME_RINVSRCADR, GSM411_RP_CAUSE_MO_SMS_REJECTED }, { ESME_RINVMSGID, GSM411_RP_CAUSE_INV_TRANS_REF } }; static int smpp_to_gsm411_err(uint32_t smpp_status_code, int *gsm411_cause) { int i; for (i = 0; i < ARRAY_SIZE(smpp_to_gsm411_err_array); i++) { if (smpp_to_gsm411_err_array[i].smpp_status_code != smpp_status_code) continue; *gsm411_cause = smpp_to_gsm411_err_array[i].gsm411_cause; return 0; } return -1; } static void smpp_cmd_free(struct osmo_smpp_cmd *cmd) { osmo_timer_del(&cmd->response_timer); llist_del(&cmd->list); vlr_subscr_put(cmd->vsub, VSUB_USE_SMPP_CMD); talloc_free(cmd); } void smpp_cmd_flush_pending(struct smpp_esme *esme) { struct osmo_smpp_cmd *cmd, *next; llist_for_each_entry_safe(cmd, next, &esme->smpp_cmd_list, list) smpp_cmd_free(cmd); } void smpp_cmd_ack(struct osmo_smpp_cmd *cmd) { struct msc_a *msc_a; struct gsm_trans *trans; if (cmd->is_report) goto out; msc_a = msc_a_for_vsub(cmd->vsub, true); if (!msc_a) { LOGP(DSMPP, LOGL_ERROR, "No connection to subscriber %s\n", vlr_subscr_name(cmd->vsub)); goto out; } trans = trans_find_by_id(msc_a, TRANS_SMS, cmd->gsm411_trans_id); if (!trans) { LOG_MSC_A_CAT(msc_a, DSMPP, LOGL_ERROR, "GSM transaction %u is gone\n", cmd->gsm411_trans_id); goto out; } gsm411_send_rp_ack(trans, cmd->gsm411_msg_ref); out: smpp_cmd_free(cmd); } void smpp_cmd_err(struct osmo_smpp_cmd *cmd, uint32_t status) { struct msc_a *msc_a; struct gsm_trans *trans; int gsm411_cause; if (cmd->is_report) goto out; msc_a = msc_a_for_vsub(cmd->vsub, true); if (!msc_a) { LOGP(DSMPP, LOGL_ERROR, "No connection to subscriber %s\n", vlr_subscr_name(cmd->vsub)); goto out; } trans = trans_find_by_id(msc_a, TRANS_SMS, cmd->gsm411_trans_id); if (!trans) { LOG_MSC_A_CAT(msc_a, DSMPP, LOGL_ERROR, "GSM transaction %u is gone\n", cmd->gsm411_trans_id); goto out; } if (smpp_to_gsm411_err(status, &gsm411_cause) < 0) gsm411_cause = GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER; gsm411_send_rp_error(trans, cmd->gsm411_msg_ref, gsm411_cause); out: smpp_cmd_free(cmd); } static void smpp_deliver_sm_cb(void *data) { smpp_cmd_err(data, ESME_RSYSERR); } static int smpp_cmd_enqueue(struct smpp_esme *esme, struct vlr_subscr *vsub, struct gsm_sms *sms, uint32_t sequence_number) { struct osmo_smpp_cmd *cmd; cmd = talloc_zero(esme, struct osmo_smpp_cmd); if (!cmd) return -1; cmd->sequence_nr = sequence_number; cmd->is_report = sms->is_report; cmd->gsm411_msg_ref = sms->gsm411.msg_ref; cmd->gsm411_trans_id = sms->gsm411.transaction_id; vlr_subscr_get(vsub, VSUB_USE_SMPP_CMD); cmd->vsub = vsub; /* FIXME: No predefined value for this response_timer as specified by * SMPP 3.4 specs, section 7.2. Make this configurable? Don't forget * lchan keeps busy until we get a reply to this SMPP command. Too high * value may exhaust resources. */ osmo_timer_setup(&cmd->response_timer, smpp_deliver_sm_cb, cmd); osmo_timer_schedule(&cmd->response_timer, 5, 0); llist_add_tail(&cmd->list, &esme->smpp_cmd_list); return 0; } struct osmo_smpp_cmd *smpp_cmd_find_by_seqnum(struct smpp_esme *esme, uint32_t sequence_nr) { struct osmo_smpp_cmd *cmd; llist_for_each_entry(cmd, &esme->smpp_cmd_list, list) { if (cmd->sequence_nr == sequence_nr) return cmd; } return NULL; } static int deliver_to_esme(struct smpp_esme *esme, struct gsm_sms *sms, struct msc_a *msc_a) { struct deliver_sm_t deliver; int mode, ret; uint8_t dcs; struct vlr_subscr *vsub = msc_a_vsub(msc_a); memset(&deliver, 0, sizeof(deliver)); deliver.command_length = 0; deliver.command_id = DELIVER_SM; deliver.command_status = ESME_ROK; strcpy((char *)deliver.service_type, "CMT"); if (esme->acl && esme->acl->deliver_src_imsi) { deliver.source_addr_ton = TON_Subscriber_Number; deliver.source_addr_npi = NPI_Land_Mobile_E212; snprintf((char *)deliver.source_addr, sizeof(deliver.source_addr), "%s", vsub->imsi); } else { deliver.source_addr_ton = TON_Network_Specific; deliver.source_addr_npi = NPI_ISDN_E163_E164; snprintf((char *)deliver.source_addr, sizeof(deliver.source_addr), "%s", vsub->msisdn); } deliver.dest_addr_ton = sms->dst.ton; deliver.dest_addr_npi = sms->dst.npi; memcpy(deliver.destination_addr, sms->dst.addr, sizeof(deliver.destination_addr)); if (sms->is_report) deliver.esm_class = SMPP34_DELIVERY_RECEIPT; else deliver.esm_class = SMPP34_DATAGRAM_MODE; if (sms->ud_hdr_ind) deliver.esm_class |= SMPP34_UDHI_IND; if (sms->reply_path_req) deliver.esm_class |= SMPP34_REPLY_PATH; deliver.protocol_id = sms->protocol_id; deliver.priority_flag = 0; if (sms->status_rep_req) deliver.registered_delivery = SMPP34_DELIVERY_RECEIPT_ON; /* Figure out SMPP DCS from TP-DCS */ dcs = sms->data_coding_scheme; if (smpp_determine_scheme(dcs, &deliver.data_coding, &mode) == -1) return -1; /* Transparently pass on DCS via SMPP if requested */ if (esme->acl && esme->acl->dcs_transparent) deliver.data_coding = dcs; if (mode == MODE_7BIT) { uint8_t *dst = deliver.short_message; /* SMPP has this strange notion of putting 7bit SMS in * an octet-aligned mode */ if (sms->ud_hdr_ind) { /* length (bytes) of UDH inside UD */ uint8_t udh_len = sms->user_data[0] + 1; /* copy over the UDH */ memcpy(dst, sms->user_data, udh_len); dst += udh_len; deliver.sm_length = udh_len; } /* add decoded text */ deliver.sm_length += gsm_7bit_expand((char *)dst, sms->user_data, sms->user_data_len, sms->ud_hdr_ind); } else { deliver.sm_length = sms->user_data_len; memcpy(deliver.short_message, sms->user_data, deliver.sm_length); } #if BEFORE_MSCSPLIT /* We currently have no lchan information. Re-add after A-interface, see OS#2390. */ if (esme->acl && esme->acl->osmocom_ext && conn->lchan) append_osmo_tlvs(&deliver.tlv, conn->lchan); #endif append_tlv_u16(&deliver.tlv, TLVID_user_message_reference, sms->msg_ref); ret = smpp_tx_deliver(esme, &deliver); destroy_tlv(deliver.tlv); if (ret < 0) return ret; OSMO_ASSERT(!sms->smpp.esme); smpp_esme_get(esme); sms->smpp.esme = esme; return smpp_cmd_enqueue(esme, vsub, sms, deliver.sequence_number); } bool smpp_route_smpp_first() { return (bool)(g_smsc->smpp_first); } int smpp_try_deliver(struct gsm_sms *sms, struct msc_a *msc_a) { struct smpp_esme *esme; struct osmo_smpp_addr dst; int rc; memset(&dst, 0, sizeof(dst)); dst.ton = sms->dst.ton; dst.npi = sms->dst.npi; memcpy(dst.addr, sms->dst.addr, sizeof(dst.addr)); rc = smpp_route(g_smsc, &dst, &esme); if (!rc) rc = deliver_to_esme(esme, sms, msc_a); return rc; } struct smsc *smsc_from_vty(struct vty *v) { /* FIXME: this is ugly */ return g_smsc; } /*! \brief Allocate the OsmoMSC SMPP interface struct and init VTY. */ int smpp_msc_alloc_init(void *ctx) { g_smsc = smpp_smsc_alloc_init(ctx); if (!g_smsc) { LOGP(DSMPP, LOGL_FATAL, "Cannot allocate smsc struct\n"); return -1; } smpp34_set_memory_functions(&smpp34_talloc); return smpp_vty_init(); } /*! \brief Launch the OsmoMSC SMPP interface with the parameters set from VTY. */ int smpp_msc_start(struct gsm_network *net) { int rc; g_smsc->priv = net; /* If a VTY configuration has taken place, the values have been stored * in the smsc struct. Otherwise, use the defaults (NULL -> any, 0 -> * default SMPP port, see smpp_smsc_bind()). */ rc = smpp_smsc_start(g_smsc, g_smsc->bind_addr, g_smsc->listen_port); if (rc < 0) return rc; rc = osmo_signal_register_handler(SS_SMS, smpp_sms_cb, g_smsc); if (rc < 0) return rc; rc = osmo_signal_register_handler(SS_SUBSCR, smpp_subscr_cb, g_smsc); if (rc < 0) return rc; return 0; }