diff options
Diffstat (limited to 'src/libmsc/smpp_openbsc.c')
| -rw-r--r-- | src/libmsc/smpp_openbsc.c | 758 |
1 files changed, 758 insertions, 0 deletions
diff --git a/src/libmsc/smpp_openbsc.c b/src/libmsc/smpp_openbsc.c new file mode 100644 index 000000000..f94968a3f --- /dev/null +++ b/src/libmsc/smpp_openbsc.c @@ -0,0 +1,758 @@ +/* OpenBSC SMPP 3.4 interface, SMSC-side implementation */ + +/* (C) 2012-2013 by Harald Welte <laforge@gnumonks.org> + * + * 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 <http://www.gnu.org/licenses/>. + */ + + +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <stdint.h> +#include <errno.h> + +#include <smpp34.h> +#include <smpp34_structs.h> +#include <smpp34_params.h> + +#include <osmocom/core/utils.h> +#include <osmocom/core/msgb.h> +#include <osmocom/core/logging.h> +#include <osmocom/core/talloc.h> +#include <osmocom/gsm/protocol/gsm_04_11.h> +#include <osmocom/gsm/protocol/smpp34_osmocom.h> + +#include <openbsc/gsm_subscriber.h> +#include <openbsc/debug.h> +#include <openbsc/db.h> +#include <openbsc/gsm_04_11.h> +#include <openbsc/gsm_data.h> +#include <openbsc/signal.h> +#include <openbsc/transaction.h> +#include <openbsc/gsm_subscriber.h> +#include <openbsc/chan_alloc.h> + +#include "smpp_smsc.h" + +/*! \brief find gsm_subscriber for a given SMPP NPI/TON/Address */ +static struct gsm_subscriber *subscr_by_dst(struct gsm_network *net, + uint8_t npi, uint8_t ton, const char *addr) +{ + struct gsm_subscriber *subscr = NULL; + + switch (npi) { + case NPI_Land_Mobile_E212: + subscr = subscr_get_by_imsi(net->subscr_group, addr); + break; + case NPI_ISDN_E163_E164: + case NPI_Private: + subscr = subscr_get_by_extension(net->subscr_group, addr); + break; + default: + LOGP(DSMPP, LOGL_NOTICE, "Unsupported NPI: %u\n", npi); + break; + } + + /* tag the context in case we know it */ + log_set_context(LOG_CTX_VLR_SUBSCR, subscr); + return subscr; +} + +/*! \brief find a TLV with given tag in list of libsmpp34 TLVs */ +static struct tlv_t *find_tlv(struct tlv_t *head, uint16_t tag) +{ + struct tlv_t *t; + + for (t = head; t != NULL; t = t->next) { + if (t->tag == tag) + return t; + } + return NULL; +} + +/*! \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) +{ + struct gsm_subscriber *dest; + struct gsm_sms *sms; + struct tlv_t *t; + const uint8_t *sms_msg; + unsigned int sms_msg_len; + int mode; + + dest = subscr_by_dst(net, submit->dest_addr_npi, + submit->dest_addr_ton, + (const char *)submit->destination_addr); + if (!dest) { + LOGP(DLSMS, LOGL_NOTICE, "SMPP SUBMIT-SM for unknown subscriber: " + "%s (NPI=%u)\n", submit->destination_addr, + submit->dest_addr_npi); + return ESME_RINVDSTADR; + } + + t = find_tlv(submit->tlv, TLVID_message_payload); + if (t) { + if (submit->sm_length) { + /* ERROR: we cannot have both! */ + LOGP(DLSMS, LOGL_ERROR, "SMPP Cannot have payload in " + "TLV _and_ in the header\n"); + subscr_put(dest); + return ESME_ROPTPARNOTALLWD; + } + sms_msg = t->value.octet; + sms_msg_len = t->length; + } else 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"); + subscr_put(dest); + return ESME_RINVPARLEN; + } + + sms = sms_alloc(); + sms->source = SMS_SOURCE_SMPP; + sms->smpp.sequence_nr = submit->sequence_number; + + /* fill in the destination address */ + sms->receiver = dest; + sms->dst.ton = submit->dest_addr_ton; + sms->dst.npi = submit->dest_addr_npi; + osmo_strlcpy(sms->dst.addr, dest->extension, sizeof(sms->dst.addr)); + + /* fill in the source address */ + sms->src.ton = submit->source_addr_ton; + sms->src.npi = submit->source_addr_npi; + osmo_strlcpy(sms->src.addr, (char *)submit->source_addr, + sizeof(sms->src.addr)); + + if (submit->esm_class & 0x40) + sms->ud_hdr_ind = 1; + + if (submit->esm_class & 0x80) { + 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) { + uint8_t ud_len = 0, padbits = 0; + sms->data_coding_scheme = GSM338_DCS_1111_7BIT; + if (sms->ud_hdr_ind) { + ud_len = *sms_msg + 1; + 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_septets2octets(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; + } + + *psms = sms; + return ESME_ROK; +} + +/*! \brief handle incoming libsmpp34 ssubmit_sm_t from remote ESME */ +int handle_smpp_submit(struct osmo_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 & 3) { + 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_subscr(sms->receiver, sms); + rc = 1; /* don't send any response yet */ + break; + } + return rc; +} + +static void alert_all_esme(struct smsc *smsc, struct gsm_subscriber *subscr, + uint8_t smpp_avail_status) +{ + struct osmo_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-existant) delivery + * pending flag to be set before, FIXME: make this VTY + * configurable */ + if (esme->acl && esme->acl->deliver_src_imsi) { + smpp_tx_alert(esme, TON_Subscriber_Number, + NPI_Land_Mobile_E212, + subscr->imsi, smpp_avail_status); + } else { + smpp_tx_alert(esme, TON_Network_Specific, + NPI_ISDN_E163_E164, + subscr->extension, 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 apropriate 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->subscr) { + /* 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->subscr, 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 gsm_subscriber *subscr = 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, subscr, 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 = htons(val); + build_tlv(req_tlv, &tlv); +} + +/* 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->subscr) { + struct gsm_subscriber *subscr = lchan->conn->subscr; + size_t imei_len = strlen(subscr->equipment.imei); + if (imei_len) + append_tlv(req_tlv, TLVID_osmo_imei, + (uint8_t *)subscr->equipment.imei, imei_len+1); + } +} + +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); + subscr_put(cmd->subscr); + sms_free(cmd->sms); + talloc_free(cmd); +} + +void smpp_cmd_flush_pending(struct osmo_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 gsm_subscriber_connection *conn; + struct gsm_trans *trans; + + conn = connection_for_subscr(cmd->subscr); + if (!conn) { + LOGP(DSMPP, LOGL_ERROR, "No connection to subscriber anymore\n"); + return; + } + + trans = trans_find_by_id(conn, GSM48_PDISC_SMS, + cmd->sms->gsm411.transaction_id); + if (!trans) { + LOGP(DSMPP, LOGL_ERROR, "GSM transaction %u is gone\n", + cmd->sms->gsm411.transaction_id); + return; + } + + gsm411_send_rp_ack(trans, cmd->sms->gsm411.msg_ref); + smpp_cmd_free(cmd); +} + +void smpp_cmd_err(struct osmo_smpp_cmd *cmd, uint32_t status) +{ + struct gsm_subscriber_connection *conn; + struct gsm_trans *trans; + int gsm411_cause; + + conn = connection_for_subscr(cmd->subscr); + if (!conn) { + LOGP(DSMPP, LOGL_ERROR, "No connection to subscriber anymore\n"); + return; + } + + trans = trans_find_by_id(conn, GSM48_PDISC_SMS, + cmd->sms->gsm411.transaction_id); + if (!trans) { + LOGP(DSMPP, LOGL_ERROR, "GSM transaction %u is gone\n", + cmd->sms->gsm411.transaction_id); + return; + } + + 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->sms->gsm411.msg_ref, gsm411_cause); + + smpp_cmd_free(cmd); +} + +static void smpp_deliver_sm_cb(void *data) +{ + smpp_cmd_err(data, ESME_RSYSERR); +} + +static int smpp_cmd_enqueue(struct osmo_esme *esme, + struct gsm_subscriber *subscr, struct gsm_sms *sms, + uint32_t sequence_number, bool *deferred) +{ + struct osmo_smpp_cmd *cmd; + + cmd = talloc_zero(esme, struct osmo_smpp_cmd); + if (!cmd) + return -1; + + cmd->sequence_nr = sequence_number; + cmd->sms = sms; + cmd->subscr = subscr_get(subscr); + + /* 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); + *deferred = true; + + return 0; +} + +struct osmo_smpp_cmd *smpp_cmd_find_by_seqnum(struct osmo_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 osmo_esme *esme, struct gsm_sms *sms, + struct gsm_subscriber_connection *conn, + bool *deferred) +{ + struct deliver_sm_t deliver; + int mode, ret; + uint8_t dcs; + + 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", + conn->subscr->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", + conn->subscr->extension); + } + + 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)); + + deliver.esm_class = 1; /* datagram mode */ + if (sms->ud_hdr_ind) + deliver.esm_class |= 0x40; + if (sms->reply_path_req) + deliver.esm_class |= 0x80; + + deliver.protocol_id = sms->protocol_id; + deliver.priority_flag = 0; + deliver.registered_delivery = 0; + + /* 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); + deliver.sm_length = sms->user_data_len; + memcpy(deliver.short_message, sms->user_data, deliver.sm_length); + } + + if (esme->acl && esme->acl->osmocom_ext && conn->lchan) + append_osmo_tlvs(&deliver.tlv, conn->lchan); + + ret = smpp_tx_deliver(esme, &deliver); + if (ret < 0) + return ret; + + return smpp_cmd_enqueue(esme, conn->subscr, sms, + deliver.sequence_number, deferred); +} + +static struct smsc *g_smsc; + +int smpp_route_smpp_first(struct gsm_sms *sms, struct gsm_subscriber_connection *conn) +{ + return g_smsc->smpp_first; +} + +int smpp_try_deliver(struct gsm_sms *sms, + struct gsm_subscriber_connection *conn, bool *deferred) +{ + struct osmo_esme *esme; + struct osmo_smpp_addr dst; + + memset(&dst, 0, sizeof(dst)); + dst.ton = sms->dst.ton; + dst.npi = sms->dst.npi; + memcpy(dst.addr, sms->dst.addr, sizeof(dst.addr)); + + esme = smpp_route(g_smsc, &dst); + if (!esme) + return GSM411_RP_CAUSE_MO_NUM_UNASSIGNED; + + return deliver_to_esme(esme, sms, conn, deferred); +} + +struct smsc *smsc_from_vty(struct vty *v) +{ + /* FIXME: this is ugly */ + return g_smsc; +} + +/*! \brief Allocate the OpenBSC SMPP interface struct and init VTY. */ +int smpp_openbsc_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; + } + return smpp_vty_init(); +} + +/*! \brief Launch the OpenBSC SMPP interface with the parameters set from VTY. + */ +int smpp_openbsc_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; +} + |