| /* OpenBSC SMPP 3.4 interface, SMSC-side implementation */ |
| |
| /* (C) 2012 by Harald Welte <laforge@gnumonks.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| |
| #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 <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 "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, addr); |
| break; |
| case NPI_ISDN_E163_E164: |
| case NPI_Private: |
| subscr = subscr_get_by_extension(net, addr); |
| break; |
| default: |
| LOGP(DSMPP, LOGL_NOTICE, "Unsupported NPI: %u\n", npi); |
| break; |
| } |
| |
| return subscr; |
| } |
| |
| /*! \brief find a TLV with given tag in list of libsmpp34 TLVs */ |
| 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; |
| |
| dest = subscr_by_dst(net, submit->dest_addr_npi, |
| submit->dest_addr_ton, |
| (const char *)submit->destination_addr); |
| if (!dest) { |
| LOGP(DSMS, 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! */ |
| return ESME_ROPTPARNOTALLWD; |
| } |
| sms_msg = t->value.octet; |
| sms_msg_len = t->length; |
| } else if (submit->short_message && submit->sm_length) { |
| sms_msg = submit->short_message; |
| sms_msg_len = submit->sm_length; |
| } else { |
| sms_msg = NULL; |
| sms_msg_len = 0; |
| } |
| |
| sms = sms_alloc(); |
| sms->source = SMS_SOURCE_SMPP; |
| sms->smpp.sequence_nr = submit->sequence_number; |
| sms->receiver = subscr_get(dest); |
| strncpy(sms->dest_addr, dest->extension, sizeof(sms->dest_addr)-1); |
| sms->sender = subscr_get_by_id(net, 1); |
| |
| if (submit->esm_class & 0x40) |
| sms->ud_hdr_ind = 1; |
| |
| if (submit->esm_class & 0x80) { |
| sms->reply_path_req = 1; |
| #warning Implement reply path |
| } |
| |
| switch (submit->data_coding) { |
| case 0x00: |
| case 0x01: /* GSM default alphabet */ |
| sms->data_coding_scheme = GSM338_DCS_1111_7BIT; |
| strncpy(sms->text, (char *)sms_msg, |
| OSMO_MIN(sizeof(sms->text)-1, sms_msg_len)); |
| sms->user_data_len = gsm_7bit_encode(sms->user_data, sms->text); |
| break; |
| case 0x02: |
| case 0x04: /* 8-bit binary */ |
| sms->data_coding_scheme = GSM338_DCS_1111_8BIT_DATA; |
| memcpy(sms->user_data, sms_msg, sms_msg_len); |
| sms->user_data_len = sms_msg_len; |
| break; |
| case 0x80: /* UCS-2 */ |
| sms->data_coding_scheme = (2 << 2); |
| memcpy(sms->user_data, sms_msg, submit->sm_length); |
| sms->user_data_len = sms_msg_len; |
| break; |
| /* FIXME */ |
| default: |
| sms_free(sms); |
| return ESME_RUNKNOWNERR; |
| } |
| |
| *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; |
| int rc = -1; |
| |
| rc = submit_to_sms(&sms, esme->smsc->priv, submit); |
| if (rc != ESME_ROK) { |
| submit_r->command_status = rc; |
| return 0; |
| } |
| smpp_esme_get(esme); |
| sms->smpp.esme = esme; |
| /* FIXME: TP-PID */ |
| |
| switch (submit->esm_class & 3) { |
| case 0: /* default */ |
| case 1: /* datagram */ |
| case 3: /* store-and-forward */ |
| rc = db_sms_store(sms); |
| if (rc < 0) { |
| LOGP(DSMS, LOGL_ERROR, "SMPP SUBMIT-SM: Unable to " |
| "store SMS in database\n"); |
| sms_free(sms); |
| submit_r->command_status = ESME_RSYSERR; |
| return 0; |
| } |
| strcpy((char *)submit_r->message_id, "msg_id_not_implemented"); |
| LOGP(DSMS, LOGL_INFO, "SMPP SUBMIT-SM: Stored in DB\n"); |
| rc = 0; |
| break; |
| case 2: /* forward (i.e. transaction) mode */ |
| sms->smpp.transaction_mode = 1; |
| gsm411_send_sms_subscr(sms->receiver, sms); |
| rc = 1; /* don't send any response yet */ |
| break; |
| } |
| return rc; |
| } |
| |
| /*! \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 gsm_network *network = handler_data; |
| struct sms_signal_data *sig_sms = signal_data; |
| struct gsm_sms *sms = sig_sms->sms; |
| int rc = 0; |
| |
| if (!sms) |
| return 0; |
| |
| if (sms->source != SMS_SOURCE_SMPP) |
| return 0; |
| |
| switch (signal) { |
| case S_SMS_UNKNOWN_ERROR: |
| if (sms->smpp.transaction_mode) { |
| /* Send back the SUBMIT-SM response with apropriate error */ |
| LOGP(DSMS, 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(DSMS, 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; |
| } |
| |
| return rc; |
| } |
| |
| /*! \brief Initialize the OpenBSC SMPP interface */ |
| int smpp_openbsc_init(struct gsm_network *net, uint16_t port) |
| { |
| struct smsc *smsc = talloc_zero(net, struct smsc); |
| int rc; |
| |
| smsc->priv = net; |
| |
| rc = smpp_smsc_init(smsc, port); |
| if (rc < 0) |
| talloc_free(smsc); |
| |
| osmo_signal_register_handler(SS_SMS, smpp_sms_cb, net); |
| |
| return rc; |
| } |
| |