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osmo-msc/src/libmsc/smpp_openbsc.c

858 lines
23 KiB

/* OpenBSC SMPP 3.4 interface, SMSC-side implementation */
/* (C) 2012-2022 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 <time.h>
#include <smpp34.h>
#include <smpp34_structs.h>
#include <smpp34_params.h>
#include <smpp34_heap.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 <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/debug.h>
#include <osmocom/msc/db.h>
#include <osmocom/msc/gsm_04_11.h>
#include <osmocom/msc/gsm_data.h>
#include <osmocom/msc/signal.h>
#include <osmocom/msc/transaction.h>
#include <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/vlr.h>
#include <osmocom/msc/msc_a.h>
#include "smpp_smsc.h"
#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) {
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_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;
*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 & 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 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-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) {
LOGP(DSMPP, LOGL_DEBUG,
"[%s] is not set to receive Alert Notifications\n",
esme->system_id);
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 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 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 osmo_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 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 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);
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);
}
static struct smsc *g_smsc;
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 osmo_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 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;
}
smpp34_set_memory_functions(&smpp34_talloc);
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;
}