1298 lines
34 KiB
C
1298 lines
34 KiB
C
/* Point-to-Point (PP) Short Message Service (SMS)
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* Support on Mobile Radio Interface
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* 3GPP TS 04.11 version 7.1.0 Release 1998 / ETSI TS 100 942 V7.1.0 */
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/* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
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* (C) 2009 by Harald Welte <laforge@gnumonks.org>
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* (C) 2010-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2010 by On-Waves
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* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <time.h>
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#include <netinet/in.h>
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#include "bscconfig.h"
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/gsm0411_utils.h>
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#include <osmocom/gsm/protocol/gsm_04_11.h>
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#include <osmocom/msc/debug.h>
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#include <osmocom/msc/gsm_data.h>
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#include <osmocom/msc/db.h>
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#include <osmocom/msc/gsm_subscriber.h>
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#include <osmocom/msc/gsm_04_08.h>
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#include <osmocom/msc/signal.h>
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#include <osmocom/msc/db.h>
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#include <osmocom/msc/transaction.h>
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#include <osmocom/msc/msc_ifaces.h>
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#include <osmocom/msc/vlr.h>
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#ifdef BUILD_SMPP
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#include "smpp_smsc.h"
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#endif
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void *tall_gsms_ctx;
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static uint32_t new_callref = 0x40000001;
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struct gsm_sms *sms_alloc(void)
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{
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return talloc_zero(tall_gsms_ctx, struct gsm_sms);
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}
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void sms_free(struct gsm_sms *sms)
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{
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/* drop references to subscriber structure */
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if (sms->receiver)
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vlr_subscr_put(sms->receiver);
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#ifdef BUILD_SMPP
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if (sms->smpp.esme)
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smpp_esme_put(sms->smpp.esme);
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#endif
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talloc_free(sms);
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}
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struct gsm_sms *sms_from_text(struct vlr_subscr *receiver,
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const char *sender_msisdn,
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int dcs, const char *text)
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{
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struct gsm_sms *sms = sms_alloc();
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if (!sms)
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return NULL;
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sms->receiver = vlr_subscr_get(receiver);
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OSMO_STRLCPY_ARRAY(sms->text, text);
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OSMO_STRLCPY_ARRAY(sms->src.addr, sender_msisdn);
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sms->reply_path_req = 0;
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sms->status_rep_req = 0;
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sms->ud_hdr_ind = 0;
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sms->protocol_id = 0; /* implicit */
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sms->data_coding_scheme = dcs;
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OSMO_STRLCPY_ARRAY(sms->dst.addr, receiver->msisdn);
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/* Generate user_data */
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sms->user_data_len = gsm_7bit_encode_n(sms->user_data, sizeof(sms->user_data),
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sms->text, NULL);
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return sms;
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}
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static void send_signal(int sig_no,
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struct gsm_trans *trans,
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struct gsm_sms *sms,
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int paging_result)
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{
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struct sms_signal_data sig;
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sig.trans = trans;
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sig.sms = sms;
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sig.paging_result = paging_result;
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osmo_signal_dispatch(SS_SMS, sig_no, &sig);
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}
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static int gsm411_sendmsg(struct ran_conn *conn, struct msgb *msg)
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{
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DEBUGP(DLSMS, "GSM4.11 TX %s\n", msgb_hexdump(msg));
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msg->l3h = msg->data;
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return msc_tx_dtap(conn, msg);
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}
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/* Paging callback for MT SMS (Paging is triggered by SMC) */
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static int paging_cb_mmsms_est_req(unsigned int hooknum, unsigned int event,
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struct msgb *msg, void *_conn, void *_trans)
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{
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struct ran_conn *conn = _conn;
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struct gsm_trans *trans = _trans;
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struct gsm_sms *sms = trans->sms.sms;
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int rc = 0;
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DEBUGP(DLSMS, "paging_cb_mmsms_est_req(hooknum=%u, event=%u, "
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"conn=%p, trans=%p)\n", hooknum, event, conn, trans);
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if (hooknum != GSM_HOOK_RR_PAGING)
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return -EINVAL;
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/* Paging procedure has finished */
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trans->paging_request = NULL;
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switch (event) {
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case GSM_PAGING_SUCCEEDED:
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/* Associate transaction with established connection */
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trans->conn = ran_conn_get(conn, RAN_CONN_USE_TRANS_SMS);
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/* Confirm successful connection establishment */
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gsm411_smc_recv(&trans->sms.smc_inst,
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GSM411_MMSMS_EST_CNF, NULL, 0);
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break;
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case GSM_PAGING_EXPIRED:
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case GSM_PAGING_BUSY:
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/* Inform SMC about channel establishment failure */
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gsm411_smc_recv(&trans->sms.smc_inst,
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GSM411_MMSMS_REL_IND, NULL, 0);
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/* gsm411_send_rp_data() doesn't set trans->sms.sms */
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if (sms != NULL) {
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/* Notify the SMSqueue and free stored SMS */
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send_signal(S_SMS_UNKNOWN_ERROR, NULL, sms, event);
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trans->sms.sms = NULL;
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sms_free(sms);
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}
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/* Destroy this transaction */
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trans_free(trans);
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rc = -ETIMEDOUT;
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break;
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default:
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LOGP(DLSMS, LOGL_ERROR, "Unhandled paging event: %d\n", event);
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}
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return rc;
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}
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static int gsm411_mmsms_est_req(struct gsm_trans *trans)
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{
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/* Subscriber's data shall be associated */
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OSMO_ASSERT(trans->vsub != NULL);
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/* Check if connection is already established */
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if (trans->conn != NULL) {
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LOGP(DLSMS, LOGL_DEBUG, "Using an existing connection "
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"for %s\n", vlr_subscr_name(trans->vsub));
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return gsm411_smc_recv(&trans->sms.smc_inst,
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GSM411_MMSMS_EST_CNF, NULL, 0);
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}
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/* Initiate Paging procedure */
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LOGP(DLSMS, LOGL_DEBUG, "Initiating Paging procedure "
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"for %s due to MMSMS_EST_REQ\n", vlr_subscr_name(trans->vsub));
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trans->paging_request = subscr_request_conn(trans->vsub,
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paging_cb_mmsms_est_req, trans, "MT SMS");
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if (!trans->paging_request) {
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LOGP(DLSMS, LOGL_ERROR, "Failed to initiate Paging "
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"procedure for %s\n", vlr_subscr_name(trans->vsub));
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/* Inform SMC about channel establishment failure */
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gsm411_smc_recv(&trans->sms.smc_inst,
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GSM411_MMSMS_REL_IND, NULL, 0);
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trans_free(trans);
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return -EIO;
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}
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return 0;
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}
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/* Prefix msg with a 04.08/04.11 CP header */
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static int gsm411_cp_sendmsg(struct msgb *msg, struct gsm_trans *trans,
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uint8_t msg_type)
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{
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struct gsm48_hdr *gh;
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gh = (struct gsm48_hdr *) msgb_push(msg, sizeof(*gh));
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/* Outgoing needs the highest bit set */
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gh->proto_discr = trans->protocol | (trans->transaction_id<<4);
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gh->msg_type = msg_type;
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OMSC_LINKID_CB(msg) = trans->dlci;
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DEBUGP(DLSMS, "sending CP message (trans=%x)\n", trans->transaction_id);
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return gsm411_sendmsg(trans->conn, msg);
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}
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/* mm_send: receive MMCCSMS sap message from SMC */
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static int gsm411_mm_send(struct gsm411_smc_inst *inst, int msg_type,
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struct msgb *msg, int cp_msg_type)
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{
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struct gsm_trans *trans =
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container_of(inst, struct gsm_trans, sms.smc_inst);
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int rc = 0;
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switch (msg_type) {
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case GSM411_MMSMS_EST_REQ:
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rc = gsm411_mmsms_est_req(trans);
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msgb_free(msg); /* upper layer does not free msg */
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break;
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case GSM411_MMSMS_DATA_REQ:
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rc = gsm411_cp_sendmsg(msg, trans, cp_msg_type);
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break;
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case GSM411_MMSMS_REL_REQ:
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DEBUGP(DLSMS, "Got MMSMS_REL_REQ, destroying transaction.\n");
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msgb_free(msg);
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trans_free(trans);
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break;
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default:
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LOGP(DLSMS, LOGL_NOTICE, "Unhandled MMCCSMS msg 0x%x\n", msg_type);
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msgb_free(msg);
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rc = -EINVAL;
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}
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return rc;
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}
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/* mm_send: receive MNCCSMS sap message from SMR */
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int gsm411_mn_send(struct gsm411_smr_inst *inst, int msg_type,
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struct msgb *msg)
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{
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struct gsm_trans *trans =
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container_of(inst, struct gsm_trans, sms.smr_inst);
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/* forward to SMC */
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return gsm411_smc_send(&trans->sms.smc_inst, msg_type, msg);
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}
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static int gsm340_rx_sms_submit(struct gsm_sms *gsms)
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{
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if (db_sms_store(gsms) != 0) {
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LOGP(DLSMS, LOGL_ERROR, "Failed to store SMS in Database\n");
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return GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER;
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}
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/* dispatch a signal to tell higher level about it */
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send_signal(S_SMS_SUBMITTED, NULL, gsms, 0);
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return 0;
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}
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/* generate a TPDU address field compliant with 03.40 sec. 9.1.2.5 */
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static int gsm340_gen_oa_sub(uint8_t *oa, unsigned int oa_len,
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const struct gsm_sms_addr *src)
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{
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/* network specific, private numbering plan */
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return gsm340_gen_oa(oa, oa_len, src->ton, src->npi, src->addr);
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}
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/* generate a msgb containing an 03.40 9.2.2.1 SMS-DELIVER TPDU derived from
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* struct gsm_sms, returns total size of TPDU */
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static int gsm340_gen_sms_deliver_tpdu(struct msgb *msg, struct gsm_sms *sms)
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{
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uint8_t *smsp;
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uint8_t oa[12]; /* max len per 03.40 */
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uint8_t octet_len;
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unsigned int old_msg_len = msg->len;
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int oa_len;
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/* generate first octet with masked bits */
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smsp = msgb_put(msg, 1);
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/* TP-MTI (message type indicator) */
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*smsp = GSM340_SMS_DELIVER_SC2MS;
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/* TP-MMS (more messages to send) */
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if (0 /* FIXME */)
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*smsp |= 0x04;
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/* TP-SRI(deliver)/SRR(submit) */
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if (sms->status_rep_req)
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*smsp |= 0x20;
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/* TP-UDHI (indicating TP-UD contains a header) */
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if (sms->ud_hdr_ind)
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*smsp |= 0x40;
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/* generate originator address */
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oa_len = gsm340_gen_oa_sub(oa, sizeof(oa), &sms->src);
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if (oa_len < 0)
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return -ENOSPC;
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smsp = msgb_put(msg, oa_len);
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memcpy(smsp, oa, oa_len);
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/* generate TP-PID */
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smsp = msgb_put(msg, 1);
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*smsp = sms->protocol_id;
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/* generate TP-DCS */
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smsp = msgb_put(msg, 1);
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*smsp = sms->data_coding_scheme;
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/* generate TP-SCTS */
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smsp = msgb_put(msg, 7);
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gsm340_gen_scts(smsp, time(NULL));
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/* generate TP-UDL */
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smsp = msgb_put(msg, 1);
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*smsp = sms->user_data_len;
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/* generate TP-UD */
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switch (gsm338_get_sms_alphabet(sms->data_coding_scheme)) {
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case DCS_7BIT_DEFAULT:
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octet_len = sms->user_data_len*7/8;
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if (sms->user_data_len*7%8 != 0)
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octet_len++;
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/* Warning, user_data_len indicates the amount of septets
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* (characters), we need amount of octets occupied */
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smsp = msgb_put(msg, octet_len);
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memcpy(smsp, sms->user_data, octet_len);
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break;
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case DCS_UCS2:
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case DCS_8BIT_DATA:
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smsp = msgb_put(msg, sms->user_data_len);
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memcpy(smsp, sms->user_data, sms->user_data_len);
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break;
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default:
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LOGP(DLSMS, LOGL_NOTICE, "Unhandled Data Coding Scheme: 0x%02X\n",
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sms->data_coding_scheme);
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break;
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}
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return msg->len - old_msg_len;
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}
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/* As defined by GSM 03.40, Section 9.2.2.3. */
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static int gsm340_gen_sms_status_report_tpdu(struct msgb *msg,
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struct gsm_sms *sms)
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{
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unsigned int old_msg_len = msg->len;
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uint8_t oa[12]; /* max len per 03.40 */
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uint8_t *smsp;
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int oa_len;
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/* generate first octet with masked bits */
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smsp = msgb_put(msg, 1);
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/* TP-MTI (message type indicator) */
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*smsp = GSM340_SMS_STATUS_REP_SC2MS;
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/* TP-MMS (more messages to send) */
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if (0 /* FIXME */)
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*smsp |= 0x04;
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/* TP-MR (message reference) */
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smsp = msgb_put(msg, 1);
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*smsp = sms->msg_ref;
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/* generate recipient address */
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oa_len = gsm340_gen_oa_sub(oa, sizeof(oa), &sms->src);
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if (oa_len < 0)
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return -ENOSPC;
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smsp = msgb_put(msg, oa_len);
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memcpy(smsp, oa, oa_len);
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/* generate TP-SCTS (Service centre timestamp) */
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smsp = msgb_put(msg, 7);
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gsm340_gen_scts(smsp, sms->created);
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/* generate TP-DT (Discharge time, in TP-SCTS format). */
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smsp = msgb_put(msg, 7);
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gsm340_gen_scts(smsp, sms->created);
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/* TP-ST (status) */
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smsp = msgb_put(msg, 1);
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/* From GSM 03.40, Section 9.2.3.15, 0x00 means OK. */
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*smsp = 0x00;
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LOGP(DLSMS, LOGL_INFO, "sending status report for SMS reference %x\n",
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sms->msg_ref);
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return msg->len - old_msg_len;
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}
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static int sms_route_mt_sms(struct ran_conn *conn,
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struct gsm_sms *gsms)
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{
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int rc;
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#ifdef BUILD_SMPP
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int smpp_first = smpp_route_smpp_first(gsms, conn);
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/*
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* Route through SMPP first before going to the local database. In case
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* of a unroutable message and no local subscriber, SMPP will be tried
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* twice. In case of an unknown subscriber continue with the normal
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* delivery of the SMS.
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*/
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if (smpp_first) {
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rc = smpp_try_deliver(gsms, conn);
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if (rc == GSM411_RP_CAUSE_MO_NUM_UNASSIGNED)
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/* unknown subscriber, try local */
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goto try_local;
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if (rc < 0) {
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LOGP(DLSMS, LOGL_ERROR, "%s: SMS delivery error: %d.",
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vlr_subscr_name(conn->vsub), rc);
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rc = GSM411_RP_CAUSE_MO_TEMP_FAIL;
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/* rc will be logged by gsm411_send_rp_error() */
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rate_ctr_inc(&conn->network->msc_ctrs->ctr[
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MSC_CTR_SMS_DELIVER_UNKNOWN_ERROR]);
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}
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return rc;
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}
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try_local:
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#endif
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/* determine gsms->receiver based on dialled number */
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gsms->receiver = vlr_subscr_find_by_msisdn(conn->network->vlr,
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gsms->dst.addr);
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if (!gsms->receiver) {
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#ifdef BUILD_SMPP
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/* Avoid a second look-up */
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if (smpp_first) {
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rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_SMS_NO_RECEIVER]);
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return GSM411_RP_CAUSE_MO_NUM_UNASSIGNED;
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}
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rc = smpp_try_deliver(gsms, conn);
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if (rc == GSM411_RP_CAUSE_MO_NUM_UNASSIGNED) {
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rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_SMS_NO_RECEIVER]);
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} else if (rc < 0) {
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LOGP(DLSMS, LOGL_ERROR, "%s: SMS delivery error: %d.",
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vlr_subscr_name(conn->vsub), rc);
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rc = GSM411_RP_CAUSE_MO_TEMP_FAIL;
|
|
/* rc will be logged by gsm411_send_rp_error() */
|
|
rate_ctr_inc(&conn->network->msc_ctrs->ctr[
|
|
MSC_CTR_SMS_DELIVER_UNKNOWN_ERROR]);
|
|
}
|
|
#else
|
|
rc = GSM411_RP_CAUSE_MO_NUM_UNASSIGNED;
|
|
rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_SMS_NO_RECEIVER]);
|
|
#endif
|
|
} else
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/* process an incoming TPDU (called from RP-DATA)
|
|
* return value > 0: RP CAUSE for ERROR; < 0: silent error; 0 = success */
|
|
static int gsm340_rx_tpdu(struct gsm_trans *trans, struct msgb *msg,
|
|
uint32_t gsm411_msg_ref)
|
|
{
|
|
struct ran_conn *conn = trans->conn;
|
|
uint8_t *smsp = msgb_sms(msg);
|
|
struct gsm_sms *gsms;
|
|
unsigned int sms_alphabet;
|
|
uint8_t sms_mti, sms_vpf;
|
|
uint8_t *sms_vp;
|
|
uint8_t da_len_bytes;
|
|
uint8_t address_lv[12]; /* according to 03.40 / 9.1.2.5 */
|
|
int rc = 0;
|
|
|
|
rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_SMS_SUBMITTED]);
|
|
|
|
gsms = sms_alloc();
|
|
if (!gsms)
|
|
return GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER;
|
|
|
|
/* invert those fields where 0 means active/present */
|
|
sms_mti = *smsp & 0x03;
|
|
sms_vpf = (*smsp & 0x18) >> 3;
|
|
gsms->status_rep_req = (*smsp & 0x20) >> 5;
|
|
gsms->ud_hdr_ind = (*smsp & 0x40);
|
|
/*
|
|
* Not evaluating MMS (More Messages to Send) because the
|
|
* lchan stays open anyway.
|
|
* Not evaluating RP (Reply Path) because we're not aware of its
|
|
* benefits.
|
|
*/
|
|
|
|
smsp++;
|
|
gsms->msg_ref = *smsp++;
|
|
|
|
gsms->gsm411.transaction_id = trans->transaction_id;
|
|
gsms->gsm411.msg_ref = gsm411_msg_ref;
|
|
|
|
/* length in bytes of the destination address */
|
|
da_len_bytes = 2 + *smsp/2 + *smsp%2;
|
|
if (da_len_bytes > 12) {
|
|
LOGP(DLSMS, LOGL_ERROR, "Destination Address > 12 bytes ?!?\n");
|
|
rc = GSM411_RP_CAUSE_SEMANT_INC_MSG;
|
|
goto out;
|
|
} else if (da_len_bytes < 4) {
|
|
LOGP(DLSMS, LOGL_ERROR, "Destination Address < 4 bytes ?!?\n");
|
|
rc = GSM411_RP_CAUSE_SEMANT_INC_MSG;
|
|
goto out;
|
|
}
|
|
memset(address_lv, 0, sizeof(address_lv));
|
|
memcpy(address_lv, smsp, da_len_bytes);
|
|
/* mangle first byte to reflect length in bytes, not digits */
|
|
address_lv[0] = da_len_bytes - 1;
|
|
|
|
gsms->dst.ton = (address_lv[1] >> 4) & 7;
|
|
gsms->dst.npi = address_lv[1] & 0xF;
|
|
/* convert to real number */
|
|
gsm48_decode_bcd_number(gsms->dst.addr,
|
|
sizeof(gsms->dst.addr), address_lv, 1);
|
|
smsp += da_len_bytes;
|
|
|
|
gsms->protocol_id = *smsp++;
|
|
gsms->data_coding_scheme = *smsp++;
|
|
|
|
sms_alphabet = gsm338_get_sms_alphabet(gsms->data_coding_scheme);
|
|
if (sms_alphabet == 0xffffffff) {
|
|
rc = GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER;
|
|
goto out;
|
|
}
|
|
|
|
switch (sms_vpf) {
|
|
case GSM340_TP_VPF_RELATIVE:
|
|
sms_vp = smsp++;
|
|
break;
|
|
case GSM340_TP_VPF_ABSOLUTE:
|
|
case GSM340_TP_VPF_ENHANCED:
|
|
sms_vp = smsp;
|
|
/* the additional functionality indicator... */
|
|
if (sms_vpf == GSM340_TP_VPF_ENHANCED && *smsp & (1<<7))
|
|
smsp++;
|
|
smsp += 7;
|
|
break;
|
|
case GSM340_TP_VPF_NONE:
|
|
sms_vp = 0;
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE,
|
|
"SMS Validity period not implemented: 0x%02x\n", sms_vpf);
|
|
rc = GSM411_RP_CAUSE_MO_NET_OUT_OF_ORDER;
|
|
goto out;
|
|
}
|
|
gsms->user_data_len = *smsp++;
|
|
if (gsms->user_data_len) {
|
|
memcpy(gsms->user_data, smsp, gsms->user_data_len);
|
|
|
|
switch (sms_alphabet) {
|
|
case DCS_7BIT_DEFAULT:
|
|
gsm_7bit_decode_n(gsms->text, sizeof(gsms->text), smsp,
|
|
gsms->user_data_len);
|
|
break;
|
|
case DCS_8BIT_DATA:
|
|
case DCS_UCS2:
|
|
case DCS_NONE:
|
|
break;
|
|
}
|
|
}
|
|
|
|
OSMO_STRLCPY_ARRAY(gsms->src.addr, conn->vsub->msisdn);
|
|
|
|
LOGP(DLSMS, LOGL_INFO, "RX SMS: Sender: %s, MTI: 0x%02x, VPF: 0x%02x, "
|
|
"MR: 0x%02x PID: 0x%02x, DCS: 0x%02x, DA: %s, "
|
|
"UserDataLength: 0x%02x, UserData: \"%s\"\n",
|
|
vlr_subscr_name(conn->vsub), sms_mti, sms_vpf, gsms->msg_ref,
|
|
gsms->protocol_id, gsms->data_coding_scheme, gsms->dst.addr,
|
|
gsms->user_data_len,
|
|
sms_alphabet == DCS_7BIT_DEFAULT ? gsms->text :
|
|
osmo_hexdump(gsms->user_data, gsms->user_data_len));
|
|
|
|
gsms->validity_minutes = gsm340_validity_period(sms_vpf, sms_vp);
|
|
|
|
/* FIXME: This looks very wrong */
|
|
send_signal(0, NULL, gsms, 0);
|
|
|
|
rc = sms_route_mt_sms(conn, gsms);
|
|
|
|
/*
|
|
* This SMS got routed through SMPP or no receiver exists.
|
|
* In any case, we store it in the database for further processing.
|
|
*/
|
|
|
|
switch (sms_mti) {
|
|
case GSM340_SMS_SUBMIT_MS2SC:
|
|
/* MS is submitting a SMS */
|
|
rc = gsm340_rx_sms_submit(gsms);
|
|
break;
|
|
case GSM340_SMS_COMMAND_MS2SC:
|
|
case GSM340_SMS_DELIVER_REP_MS2SC:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Unimplemented MTI 0x%02x\n", sms_mti);
|
|
rc = GSM411_RP_CAUSE_IE_NOTEXIST;
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Undefined MTI 0x%02x\n", sms_mti);
|
|
rc = GSM411_RP_CAUSE_IE_NOTEXIST;
|
|
break;
|
|
}
|
|
out:
|
|
sms_free(gsms);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Prefix msg with a RP-DATA header and send as SMR DATA */
|
|
static int gsm411_rp_sendmsg(struct gsm411_smr_inst *inst, struct msgb *msg,
|
|
uint8_t rp_msg_type, uint8_t rp_msg_ref,
|
|
int rl_msg_type)
|
|
{
|
|
struct gsm411_rp_hdr *rp;
|
|
uint8_t len = msg->len;
|
|
|
|
/* GSM 04.11 RP-DATA header */
|
|
rp = (struct gsm411_rp_hdr *)msgb_push(msg, sizeof(*rp));
|
|
rp->len = len + 2;
|
|
rp->msg_type = rp_msg_type;
|
|
rp->msg_ref = rp_msg_ref;
|
|
|
|
return gsm411_smr_send(inst, rl_msg_type, msg);
|
|
}
|
|
|
|
int gsm411_send_rp_ack(struct gsm_trans *trans, uint8_t msg_ref)
|
|
{
|
|
struct msgb *msg = gsm411_msgb_alloc();
|
|
|
|
DEBUGP(DLSMS, "TX: SMS RP ACK\n");
|
|
|
|
return gsm411_rp_sendmsg(&trans->sms.smr_inst, msg, GSM411_MT_RP_ACK_MT,
|
|
msg_ref, GSM411_SM_RL_REPORT_REQ);
|
|
}
|
|
|
|
int gsm411_send_rp_error(struct gsm_trans *trans, uint8_t msg_ref,
|
|
uint8_t cause)
|
|
{
|
|
struct msgb *msg = gsm411_msgb_alloc();
|
|
|
|
msgb_tv_put(msg, 1, cause);
|
|
|
|
LOGP(DLSMS, LOGL_NOTICE, "TX: SMS RP ERROR, cause %d (%s)\n", cause,
|
|
get_value_string(gsm411_rp_cause_strs, cause));
|
|
|
|
return gsm411_rp_sendmsg(&trans->sms.smr_inst, msg,
|
|
GSM411_MT_RP_ERROR_MT, msg_ref, GSM411_SM_RL_REPORT_REQ);
|
|
}
|
|
|
|
/* Receive a 04.11 TPDU inside RP-DATA / user data */
|
|
static int gsm411_rx_rp_ud(struct msgb *msg, struct gsm_trans *trans,
|
|
struct gsm411_rp_hdr *rph,
|
|
uint8_t *dst, uint8_t dst_len)
|
|
{
|
|
int rc = 0;
|
|
|
|
if (trans->net->sms_over_gsup) {
|
|
/* RP-ACK or RP-ERROR is triggered as soon as we get the response */
|
|
rc = gsm411_gsup_mo_fwd_sm_req(trans, msg, rph->msg_ref, dst, dst_len);
|
|
if (rc) /* GSUP message sending error */
|
|
return gsm411_send_rp_error(trans, rph->msg_ref, rc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
rc = gsm340_rx_tpdu(trans, msg, rph->msg_ref);
|
|
if (rc == 0)
|
|
return gsm411_send_rp_ack(trans, rph->msg_ref);
|
|
else if (rc > 0)
|
|
return gsm411_send_rp_error(trans, rph->msg_ref, rc);
|
|
else
|
|
return rc;
|
|
}
|
|
|
|
/* Receive a 04.11 RP-DATA message in accordance with Section 7.3.1.2 */
|
|
static int gsm411_rx_rp_data(struct msgb *msg, struct gsm_trans *trans,
|
|
struct gsm411_rp_hdr *rph)
|
|
{
|
|
uint8_t src_len, dst_len, rpud_len;
|
|
uint8_t *src = NULL, *dst = NULL , *rp_ud = NULL;
|
|
|
|
/* in the MO case, this should always be zero length */
|
|
src_len = rph->data[0];
|
|
if (src_len)
|
|
src = &rph->data[1];
|
|
|
|
dst_len = rph->data[1+src_len];
|
|
if (dst_len)
|
|
dst = &rph->data[1+src_len+1];
|
|
|
|
rpud_len = rph->data[1+src_len+1+dst_len];
|
|
if (rpud_len)
|
|
rp_ud = &rph->data[1+src_len+1+dst_len+1];
|
|
|
|
DEBUGP(DLSMS, "RX_RP-DATA: src_len=%u, dst_len=%u ud_len=%u\n",
|
|
src_len, dst_len, rpud_len);
|
|
|
|
if (src_len && src)
|
|
LOGP(DLSMS, LOGL_ERROR, "RP-DATA (MO) with SRC ?!?\n");
|
|
|
|
if (!dst_len || !dst || !rpud_len || !rp_ud) {
|
|
LOGP(DLSMS, LOGL_ERROR,
|
|
"RP-DATA (MO) without DST or TPDU ?!?\n");
|
|
gsm411_send_rp_error(trans, rph->msg_ref,
|
|
GSM411_RP_CAUSE_INV_MAND_INF);
|
|
return -EIO;
|
|
}
|
|
|
|
msg->l4h = rp_ud;
|
|
|
|
DEBUGP(DLSMS, "DST(%u,%s)\n", dst_len, osmo_hexdump(dst, dst_len));
|
|
|
|
return gsm411_rx_rp_ud(msg, trans, rph, dst, dst_len);
|
|
}
|
|
|
|
static struct gsm_sms *sms_report_alloc(struct gsm_sms *sms)
|
|
{
|
|
struct gsm_sms *sms_report;
|
|
int len;
|
|
|
|
sms_report = sms_alloc();
|
|
OSMO_ASSERT(sms_report);
|
|
|
|
sms_report->msg_ref = sms->msg_ref;
|
|
sms_report->protocol_id = sms->protocol_id;
|
|
sms_report->data_coding_scheme = GSM338_DCS_1111_8BIT_DATA;
|
|
|
|
/* Invert address to send status report back to origin. */
|
|
sms_report->src = sms->dst;
|
|
sms_report->dst = sms->src;
|
|
|
|
/* As specified by Appendix B. Delivery Receipt Format.
|
|
* TODO: Many fields in this string are just set with dummy values,
|
|
* revisit this.
|
|
*/
|
|
len = snprintf((char *)sms_report->user_data,
|
|
sizeof(sms_report->user_data),
|
|
"id:%.08llu sub:000 dlvrd:000 submit date:YYMMDDhhmm done date:YYMMDDhhmm stat:DELIVRD err:000 text:%.20s",
|
|
sms->id, sms->text);
|
|
sms_report->user_data_len = len;
|
|
LOGP(DLSMS, LOGL_NOTICE, "%s\n", sms_report->user_data);
|
|
|
|
/* This represents a sms report. */
|
|
sms_report->is_report = true;
|
|
|
|
return sms_report;
|
|
}
|
|
|
|
static void sms_status_report(struct gsm_sms *gsms,
|
|
struct ran_conn *conn)
|
|
{
|
|
struct gsm_sms *sms_report;
|
|
int rc;
|
|
|
|
sms_report = sms_report_alloc(gsms);
|
|
|
|
rc = sms_route_mt_sms(conn, sms_report);
|
|
if (rc < 0) {
|
|
LOGP(DLSMS, LOGL_ERROR,
|
|
"Failed to send status report! err=%d\n", rc);
|
|
}
|
|
|
|
/* No route via SMPP, send the GSM 03.40 status-report now. */
|
|
if (sms_report->receiver)
|
|
gsm340_rx_sms_submit(sms_report);
|
|
|
|
LOGP(DLSMS, LOGL_NOTICE, "Status report has been sent\n");
|
|
|
|
sms_free(sms_report);
|
|
}
|
|
|
|
/* Receive a 04.11 RP-ACK message (response to RP-DATA from us) */
|
|
static int gsm411_rx_rp_ack(struct gsm_trans *trans,
|
|
struct gsm411_rp_hdr *rph)
|
|
{
|
|
struct gsm_sms *sms = trans->sms.sms;
|
|
|
|
/* Acnkowledgement to MT RP_DATA, i.e. the MS confirms it
|
|
* successfully received a SMS. We can now safely mark it as
|
|
* transmitted */
|
|
|
|
if (trans->net->sms_over_gsup) {
|
|
/* Forward towards SMSC via GSUP */
|
|
return gsm411_gsup_mt_fwd_sm_res(trans, rph->msg_ref);
|
|
}
|
|
|
|
if (!sms) {
|
|
LOGP(DLSMS, LOGL_ERROR, "RX RP-ACK but no sms in transaction?!?\n");
|
|
return gsm411_send_rp_error(trans, rph->msg_ref,
|
|
GSM411_RP_CAUSE_PROTOCOL_ERR);
|
|
}
|
|
|
|
/* mark this SMS as sent in database */
|
|
db_sms_mark_delivered(sms);
|
|
|
|
send_signal(S_SMS_DELIVERED, trans, sms, 0);
|
|
|
|
if (sms->status_rep_req)
|
|
sms_status_report(sms, trans->conn);
|
|
|
|
sms_free(sms);
|
|
trans->sms.sms = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gsm411_rx_rp_error(struct gsm_trans *trans,
|
|
struct gsm411_rp_hdr *rph)
|
|
{
|
|
struct gsm_network *net = trans->conn->network;
|
|
struct gsm_sms *sms = trans->sms.sms;
|
|
uint8_t cause_len = rph->data[0];
|
|
uint8_t cause = rph->data[1];
|
|
|
|
/* Error in response to MT RP_DATA, i.e. the MS did not
|
|
* successfully receive the SMS. We need to investigate
|
|
* the cause and take action depending on it */
|
|
|
|
LOGP(DLSMS, LOGL_NOTICE, "%s: RX SMS RP-ERROR, cause %d:%d (%s)\n",
|
|
vlr_subscr_name(trans->conn->vsub), cause_len, cause,
|
|
get_value_string(gsm411_rp_cause_strs, cause));
|
|
|
|
if (trans->net->sms_over_gsup) {
|
|
/* Forward towards SMSC via GSUP */
|
|
return gsm411_gsup_mt_fwd_sm_err(trans, rph->msg_ref, cause);
|
|
}
|
|
|
|
if (!sms) {
|
|
LOGP(DLSMS, LOGL_ERROR,
|
|
"RX RP-ERR, but no sms in transaction?!?\n");
|
|
return -EINVAL;
|
|
#if 0
|
|
return gsm411_send_rp_error(trans, rph->msg_ref,
|
|
GSM411_RP_CAUSE_PROTOCOL_ERR);
|
|
#endif
|
|
}
|
|
|
|
if (cause == GSM411_RP_CAUSE_MT_MEM_EXCEEDED) {
|
|
/* MS has not enough memory to store the message. We need
|
|
* to store this in our database and wait for a SMMA message */
|
|
/* FIXME */
|
|
send_signal(S_SMS_MEM_EXCEEDED, trans, sms, 0);
|
|
rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_SMS_RP_ERR_MEM]);
|
|
} else {
|
|
send_signal(S_SMS_UNKNOWN_ERROR, trans, sms, 0);
|
|
rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_SMS_RP_ERR_OTHER]);
|
|
}
|
|
|
|
sms_free(sms);
|
|
trans->sms.sms = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gsm411_rx_rp_smma(struct msgb *msg, struct gsm_trans *trans,
|
|
struct gsm411_rp_hdr *rph)
|
|
{
|
|
int rc;
|
|
|
|
if (trans->net->sms_over_gsup) {
|
|
/* RP-ACK or RP-ERROR is triggered as soon as we get the response */
|
|
rc = gsm411_gsup_mo_ready_for_sm_req(trans, rph->msg_ref);
|
|
if (rc) /* GSUP message sending error */
|
|
return gsm411_send_rp_error(trans, rph->msg_ref, rc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
rc = gsm411_send_rp_ack(trans, rph->msg_ref);
|
|
|
|
/* MS tells us that it has memory for more SMS, we need
|
|
* to check if we have any pending messages for it and then
|
|
* transfer those */
|
|
send_signal(S_SMS_SMMA, trans, NULL, 0);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* receive RL DATA */
|
|
static int gsm411_rx_rl_data(struct msgb *msg, struct gsm48_hdr *gh,
|
|
struct gsm_trans *trans)
|
|
{
|
|
struct gsm411_rp_hdr *rp_data = (struct gsm411_rp_hdr*)&gh->data;
|
|
uint8_t msg_type = rp_data->msg_type & 0x07;
|
|
int rc = 0;
|
|
|
|
switch (msg_type) {
|
|
case GSM411_MT_RP_DATA_MO:
|
|
DEBUGP(DLSMS, "RX SMS RP-DATA (MO)\n");
|
|
rc = gsm411_rx_rp_data(msg, trans, rp_data);
|
|
break;
|
|
case GSM411_MT_RP_SMMA_MO:
|
|
DEBUGP(DLSMS, "RX SMS RP-SMMA\n");
|
|
rc = gsm411_rx_rp_smma(msg, trans, rp_data);
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Invalid RP type 0x%02x\n", msg_type);
|
|
rc = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* receive RL REPORT */
|
|
static int gsm411_rx_rl_report(struct msgb *msg, struct gsm48_hdr *gh,
|
|
struct gsm_trans *trans)
|
|
{
|
|
struct gsm411_rp_hdr *rp_data = (struct gsm411_rp_hdr*)&gh->data;
|
|
uint8_t msg_type = rp_data->msg_type & 0x07;
|
|
int rc = 0;
|
|
|
|
switch (msg_type) {
|
|
case GSM411_MT_RP_ACK_MO:
|
|
DEBUGP(DLSMS, "RX SMS RP-ACK (MO)\n");
|
|
rc = gsm411_rx_rp_ack(trans, rp_data);
|
|
break;
|
|
case GSM411_MT_RP_ERROR_MO:
|
|
DEBUGP(DLSMS, "RX SMS RP-ERROR (MO)\n");
|
|
rc = gsm411_rx_rp_error(trans, rp_data);
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Invalid RP type 0x%02x\n", msg_type);
|
|
rc = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* receive SM-RL sap message from SMR
|
|
* NOTE: Message is freed by sender
|
|
*/
|
|
int gsm411_rl_recv(struct gsm411_smr_inst *inst, int msg_type,
|
|
struct msgb *msg)
|
|
{
|
|
struct gsm_trans *trans =
|
|
container_of(inst, struct gsm_trans, sms.smr_inst);
|
|
struct gsm48_hdr *gh = msgb_l3(msg);
|
|
int rc = 0;
|
|
|
|
switch (msg_type) {
|
|
case GSM411_SM_RL_DATA_IND:
|
|
rc = gsm411_rx_rl_data(msg, gh, trans);
|
|
break;
|
|
case GSM411_SM_RL_REPORT_IND:
|
|
if (gh)
|
|
rc = gsm411_rx_rl_report(msg, gh, trans);
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Unhandled SM-RL message 0x%x\n", msg_type);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* receive MNCCSMS sap message from SMC
|
|
* NOTE: Message is freed by sender
|
|
*/
|
|
static int gsm411_mn_recv(struct gsm411_smc_inst *inst, int msg_type,
|
|
struct msgb *msg)
|
|
{
|
|
struct gsm_trans *trans =
|
|
container_of(inst, struct gsm_trans, sms.smc_inst);
|
|
struct gsm48_hdr *gh = msgb_l3(msg);
|
|
int rc = 0;
|
|
|
|
switch (msg_type) {
|
|
case GSM411_MNSMS_EST_IND:
|
|
case GSM411_MNSMS_DATA_IND:
|
|
DEBUGP(DLSMS, "MNSMS-DATA/EST-IND\n");
|
|
rc = gsm411_smr_recv(&trans->sms.smr_inst, msg_type, msg);
|
|
break;
|
|
case GSM411_MNSMS_ERROR_IND:
|
|
if (gh)
|
|
DEBUGP(DLSMS, "MNSMS-ERROR-IND, cause %d (%s)\n",
|
|
gh->data[0],
|
|
get_value_string(gsm411_cp_cause_strs,
|
|
gh->data[0]));
|
|
else
|
|
DEBUGP(DLSMS, "MNSMS-ERROR-IND, no cause\n");
|
|
rc = gsm411_smr_recv(&trans->sms.smr_inst, msg_type, msg);
|
|
break;
|
|
default:
|
|
LOGP(DLSMS, LOGL_NOTICE, "Unhandled MNCCSMS msg 0x%x\n", msg_type);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static struct gsm_trans *gsm411_alloc_mt_trans(struct gsm_network *net,
|
|
struct vlr_subscr *vsub)
|
|
{
|
|
struct ran_conn *conn;
|
|
struct gsm_trans *trans;
|
|
int tid;
|
|
|
|
LOGP(DLSMS, LOGL_INFO, "Going to send a MT SMS\n");
|
|
|
|
/* Generate a new transaction ID */
|
|
tid = trans_assign_trans_id(net, vsub, GSM48_PDISC_SMS, 0);
|
|
if (tid == -1) {
|
|
LOGP(DLSMS, LOGL_ERROR, "No available transaction IDs\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* Allocate a new transaction */
|
|
trans = trans_alloc(net, vsub, GSM48_PDISC_SMS, tid, new_callref++);
|
|
if (!trans) {
|
|
LOGP(DLSMS, LOGL_ERROR, "No memory for trans\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* Init both SMC and SMR state machines */
|
|
gsm411_smc_init(&trans->sms.smc_inst, 0, 1,
|
|
gsm411_mn_recv, gsm411_mm_send);
|
|
gsm411_smr_init(&trans->sms.smr_inst, 0, 1,
|
|
gsm411_rl_recv, gsm411_mn_send);
|
|
|
|
/* Attempt to find an existing connection */
|
|
conn = connection_for_subscr(vsub);
|
|
if (conn) {
|
|
/* Associate transaction with connection */
|
|
trans->conn = ran_conn_get(conn, RAN_CONN_USE_TRANS_SMS);
|
|
/* Generate unique RP Message Reference */
|
|
trans->sms.sm_rp_mr = conn->next_rp_ref++;
|
|
}
|
|
|
|
/* Use SAPI 3 (see GSM 04.11, section 2.3) */
|
|
trans->dlci = UM_SAPI_SMS;
|
|
|
|
return trans;
|
|
}
|
|
|
|
/* High-level function to send an SMS to a given subscriber */
|
|
int gsm411_send_sms(struct gsm_network *net,
|
|
struct vlr_subscr *vsub,
|
|
struct gsm_sms *sms)
|
|
{
|
|
uint8_t *data, *rp_ud_len;
|
|
struct gsm_trans *trans;
|
|
struct msgb *msg;
|
|
int rc;
|
|
|
|
/* Allocate a new transaction for MT SMS */
|
|
trans = gsm411_alloc_mt_trans(net, vsub);
|
|
if (!trans) {
|
|
send_signal(S_SMS_UNKNOWN_ERROR, NULL, sms, 0);
|
|
sms_free(sms);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Allocate a message buffer for to be encoded SMS */
|
|
msg = gsm411_msgb_alloc();
|
|
if (!msg) {
|
|
send_signal(S_SMS_UNKNOWN_ERROR, NULL, sms, 0);
|
|
trans_free(trans);
|
|
sms_free(sms);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Hardcode SMSC Originating Address for now */
|
|
data = (uint8_t *)msgb_put(msg, 8);
|
|
data[0] = 0x07; /* originator length == 7 */
|
|
data[1] = 0x91; /* type of number: international, ISDN */
|
|
data[2] = 0x44; /* 447785016005 */
|
|
data[3] = 0x77;
|
|
data[4] = 0x58;
|
|
data[5] = 0x10;
|
|
data[6] = 0x06;
|
|
data[7] = 0x50;
|
|
|
|
/* Hardcoded Destination Address */
|
|
data = (uint8_t *)msgb_put(msg, 1);
|
|
data[0] = 0; /* destination length == 0 */
|
|
|
|
/* obtain a pointer for the rp_ud_len, so we can fill it later */
|
|
rp_ud_len = (uint8_t *)msgb_put(msg, 1);
|
|
|
|
if (sms->is_report) {
|
|
/* generate the 03.40 SMS-STATUS-REPORT TPDU */
|
|
rc = gsm340_gen_sms_status_report_tpdu(msg, sms);
|
|
} else {
|
|
/* generate the 03.40 SMS-DELIVER TPDU */
|
|
rc = gsm340_gen_sms_deliver_tpdu(msg, sms);
|
|
}
|
|
if (rc < 0) {
|
|
send_signal(S_SMS_UNKNOWN_ERROR, trans, sms, 0);
|
|
sms_free(sms);
|
|
trans_free(trans);
|
|
msgb_free(msg);
|
|
return rc;
|
|
}
|
|
|
|
*rp_ud_len = rc;
|
|
|
|
/* Store a pointer to abstract SMS representation */
|
|
trans->sms.sms = sms;
|
|
|
|
rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_SMS_DELIVERED]);
|
|
db_sms_inc_deliver_attempts(trans->sms.sms);
|
|
|
|
return gsm411_rp_sendmsg(&trans->sms.smr_inst, msg,
|
|
GSM411_MT_RP_DATA_MT, trans->sms.sm_rp_mr,
|
|
GSM411_SM_RL_DATA_REQ);
|
|
}
|
|
|
|
/* Low-level function to send raw RP-DATA to a given subscriber */
|
|
int gsm411_send_rp_data(struct gsm_network *net, struct vlr_subscr *vsub,
|
|
size_t sm_rp_oa_len, const uint8_t *sm_rp_oa,
|
|
size_t sm_rp_ud_len, const uint8_t *sm_rp_ud)
|
|
{
|
|
struct gsm_trans *trans;
|
|
struct msgb *msg;
|
|
|
|
/* Allocate a new transaction for MT SMS */
|
|
trans = gsm411_alloc_mt_trans(net, vsub);
|
|
if (!trans)
|
|
return -ENOMEM;
|
|
|
|
/* Allocate a message buffer for to be encoded SMS */
|
|
msg = gsm411_msgb_alloc();
|
|
if (!msg) {
|
|
trans_free(trans);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Encode SM-RP-OA (SMSC address) */
|
|
msgb_lv_put(msg, sm_rp_oa_len, sm_rp_oa);
|
|
|
|
/* Encode SM-RP-DA (shall be empty, len=0) */
|
|
msgb_v_put(msg, 0x00);
|
|
|
|
/* Encode RP-UD itself (SM TPDU) */
|
|
msgb_lv_put(msg, sm_rp_ud_len, sm_rp_ud);
|
|
|
|
rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_SMS_DELIVERED]);
|
|
|
|
return gsm411_rp_sendmsg(&trans->sms.smr_inst, msg,
|
|
GSM411_MT_RP_DATA_MT, trans->sms.sm_rp_mr,
|
|
GSM411_SM_RL_DATA_REQ);
|
|
}
|
|
|
|
/* Entry point for incoming GSM48_PDISC_SMS from abis_rsl.c */
|
|
int gsm0411_rcv_sms(struct ran_conn *conn,
|
|
struct msgb *msg)
|
|
{
|
|
struct gsm48_hdr *gh = msgb_l3(msg);
|
|
uint8_t msg_type = gh->msg_type;
|
|
uint8_t transaction_id = gsm48_hdr_trans_id_flip_ti(gh);
|
|
struct gsm_trans *trans;
|
|
int new_trans = 0;
|
|
int rc = 0;
|
|
|
|
if (!conn->vsub)
|
|
return -EIO;
|
|
/* FIXME: send some error message */
|
|
|
|
DEBUGP(DLSMS, "receiving data (trans_id=%x, msg_type=%s)\n", transaction_id,
|
|
gsm48_pdisc_msgtype_name(gsm48_hdr_pdisc(gh), gsm48_hdr_msg_type(gh)));
|
|
|
|
trans = trans_find_by_id(conn, GSM48_PDISC_SMS, transaction_id);
|
|
|
|
/*
|
|
* A transaction we created but don't know about?
|
|
*/
|
|
if (!trans && (transaction_id & 0x8) == 0) {
|
|
LOGP(DLSMS, LOGL_ERROR, "trans_id=%x allocated by us but known "
|
|
"to us anymore. We are ignoring it, maybe a CP-ERROR "
|
|
"from a MS?\n",
|
|
transaction_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!trans) {
|
|
DEBUGP(DLSMS, " -> (new transaction)\n");
|
|
trans = trans_alloc(conn->network, conn->vsub,
|
|
GSM48_PDISC_SMS,
|
|
transaction_id, new_callref++);
|
|
if (!trans) {
|
|
DEBUGP(DLSMS, " -> No memory for trans\n");
|
|
/* FIXME: send some error message */
|
|
return -ENOMEM;
|
|
}
|
|
gsm411_smc_init(&trans->sms.smc_inst, 0, 1,
|
|
gsm411_mn_recv, gsm411_mm_send);
|
|
gsm411_smr_init(&trans->sms.smr_inst, 0, 1,
|
|
gsm411_rl_recv, gsm411_mn_send);
|
|
|
|
trans->conn = ran_conn_get(conn, RAN_CONN_USE_TRANS_SMS);
|
|
trans->dlci = OMSC_LINKID_CB(msg); /* DLCI as received from BSC */
|
|
|
|
new_trans = 1;
|
|
cm_service_request_concludes(conn, msg);
|
|
}
|
|
|
|
/* 5.4: For MO, if a CP-DATA is received for a new
|
|
* transaction, equals reception of an implicit
|
|
* last CP-ACK for previous transaction */
|
|
if (trans->sms.smc_inst.cp_state == GSM411_CPS_IDLE
|
|
&& msg_type == GSM411_MT_CP_DATA) {
|
|
int i;
|
|
struct gsm_trans *ptrans;
|
|
|
|
/* Scan through all remote initiated transactions */
|
|
for (i=8; i<15; i++) {
|
|
if (i == transaction_id)
|
|
continue;
|
|
|
|
ptrans = trans_find_by_id(conn, GSM48_PDISC_SMS, i);
|
|
if (!ptrans)
|
|
continue;
|
|
|
|
DEBUGP(DLSMS, "Implicit CP-ACK for trans_id=%x\n", i);
|
|
|
|
/* Finish it for good */
|
|
trans_free(ptrans);
|
|
}
|
|
}
|
|
|
|
ran_conn_communicating(conn);
|
|
|
|
gsm411_smc_recv(&trans->sms.smc_inst,
|
|
(new_trans) ? GSM411_MMSMS_EST_IND : GSM411_MMSMS_DATA_IND,
|
|
msg, msg_type);
|
|
|
|
return rc;
|
|
}
|
|
|
|
void _gsm411_sms_trans_free(struct gsm_trans *trans)
|
|
{
|
|
/* cleanup SMS instance */
|
|
gsm411_smr_clear(&trans->sms.smr_inst);
|
|
trans->sms.smr_inst.rl_recv = NULL;
|
|
trans->sms.smr_inst.mn_send = NULL;
|
|
|
|
gsm411_smc_clear(&trans->sms.smc_inst);
|
|
trans->sms.smc_inst.mn_recv = NULL;
|
|
trans->sms.smc_inst.mm_send = NULL;
|
|
|
|
if (trans->sms.sms) {
|
|
LOGP(DLSMS, LOGL_ERROR, "Transaction contains SMS.\n");
|
|
send_signal(S_SMS_UNKNOWN_ERROR, trans, trans->sms.sms, 0);
|
|
sms_free(trans->sms.sms);
|
|
trans->sms.sms = NULL;
|
|
}
|
|
}
|
|
|
|
/* Process incoming SAPI N-REJECT from BSC */
|
|
void gsm411_sapi_n_reject(struct ran_conn *conn)
|
|
{
|
|
struct gsm_network *net;
|
|
struct gsm_trans *trans, *tmp;
|
|
|
|
net = conn->network;
|
|
|
|
llist_for_each_entry_safe(trans, tmp, &net->trans_list, entry) {
|
|
struct gsm_sms *sms;
|
|
|
|
if (trans->conn != conn)
|
|
continue;
|
|
if (trans->protocol != GSM48_PDISC_SMS)
|
|
continue;
|
|
|
|
sms = trans->sms.sms;
|
|
if (!sms) {
|
|
LOGP(DLSMS, LOGL_ERROR, "SAPI Reject but no SMS.\n");
|
|
continue;
|
|
}
|
|
|
|
send_signal(S_SMS_UNKNOWN_ERROR, trans, sms, 0);
|
|
sms_free(sms);
|
|
trans->sms.sms = NULL;
|
|
trans_free(trans);
|
|
}
|
|
}
|
|
|