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/* 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 "smpp_smsc.h"
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;
}
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;
}
/* 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->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;
}
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;
}
/* 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 */
/* FIXME */
rc = 1; /* don't send any response yet */
break;
}
return rc;
}
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);
return rc;
}
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