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/*
* openser osp module.
*
* This module enables openser to communicate with an Open Settlement
* Protocol (OSP) server. The Open Settlement Protocol is an ETSI
* defined standard for Inter-Domain VoIP pricing, authorization
* and usage exchange. The technical specifications for OSP
* (ETSI TS 101 321 V4.1.1) are available at www.etsi.org.
*
* Uli Abend was the original contributor to this module.
*
* Copyright (C) 2001-2005 Fhg Fokus
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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 "osp_mod.h"
#include "osptoolkit.h"
#include "term_transaction.h"
#include "sipheader.h"
#include "destination.h"
#include "usage.h"
#include "osp/osp.h"
#include "osp/ospb64.h"
#include "../../sr_module.h"
#include "../../locking.h"
#include "../../mem/mem.h"
extern OSPTPROVHANDLE _provider;
extern int _token_format;
extern int _validate_call_id;
extern char* _device_ip;
int checkospheader(struct sip_msg* msg, char* ignore1, char* ignore2) {
unsigned char temp[3000];
unsigned int sizeoftemp = sizeof(temp);
if (getOspHeader(msg, temp, &sizeoftemp) != 0) {
return MODULE_RETURNCODE_FALSE;
} else {
return MODULE_RETURNCODE_TRUE;
}
}
/** validate OSP header */
int validateospheader (struct sip_msg* msg, char* ignore1, char* ignore2) {
int res;
int valid;
OSPTTRANHANDLE transaction = -1;
unsigned int authorized = 0;
unsigned int time_limit = 0;
unsigned int log_size = 0;
void *detail_log = NULL;
OSPTCALLID* call_id = NULL;
osp_dest dest;
unsigned char token[3000];
unsigned int sizeoftoken = sizeof(token);
unsigned callIdLen = 0;
unsigned char* callIdVal = (unsigned char*)"";
valid = MODULE_RETURNCODE_FALSE;
initDestination(&dest);
if (0!= (res=OSPPTransactionNew(_provider, &transaction))) {
LOG(L_ERR, "ERROR: osp: Failed to create a new OSP transaction id %d\n",res);
} else if (0 != getFromUserpart(msg, dest.callingnumber, sizeof(dest.callingnumber))) {
LOG(L_ERR, "ERROR: osp: Failed to extract calling number\n");
} else if (0 != getToUserpart(msg, dest.callednumber, sizeof(dest.callednumber))) {
LOG(L_ERR, "ERROR: osp: Failed to extract called number\n");
} else if (0 != getCallId(msg, &call_id)) {
LOG(L_ERR, "ERROR: osp: Failed to extract call id\n");
} else if (0 != getSourceAddress(msg,dest.source,sizeof(dest.source))) {
LOG(L_ERR, "ERROR: osp: Failed to extract source address\n");
} else if (0 != getOspHeader(msg, token, &sizeoftoken)) {
LOG(L_ERR, "ERROR: osp: Failed to extract OSP authorization token\n");
} else {
LOG(L_INFO, "About to validate OSP token for:\n"
"transaction-handle = >%i< \n"
"e164_source = >%s< \n"
"e164_dest = >%s< \n"
"validate_call_id = >%s< \n"
"call-id = >%.*s< \n",
transaction,
dest.callingnumber,
dest.callednumber,
_validate_call_id==0?"No":"Yes",
call_id->ospmCallIdLen,
call_id->ospmCallIdVal);
if (_validate_call_id != 0) {
callIdLen = call_id->ospmCallIdLen;
callIdVal = call_id->ospmCallIdVal;
}
res = OSPPTransactionValidateAuthorisation(
transaction,
"",
"",
"",
"",
dest.callingnumber,
OSPC_E164,
dest.callednumber,
OSPC_E164,
callIdLen,
callIdVal,
sizeoftoken,
token,
&authorized,
&time_limit,
&log_size,
detail_log,
_token_format);
memcpy(dest.callid,call_id->ospmCallIdVal,call_id->ospmCallIdLen);
dest.sizeofcallid = call_id->ospmCallIdLen;
dest.tid = get_transaction_id(transaction);
dest.type = OSPC_DESTINATION;
dest.time_auth = time(NULL);
strcpy(dest.destination,_device_ip);
saveTermDestination(&dest);
if (res == 0 && authorized == 1) {
LOG(L_INFO, "osp: Call is authorized for %d seconds, call-id '%.*s', transaction-id '%lld'",
time_limit,dest.sizeofcallid,dest.callid,dest.tid);
record_term_transaction(msg,transaction,dest.source,dest.callingnumber,dest.callednumber,dest.time_auth);
valid = MODULE_RETURNCODE_TRUE;
} else {
LOG(L_ERR,"ERROR: osp: Token is not valid, code %i\n", res);
/* Update terminating status code to 401 and report terminating set-up usage.
* We may need to make 401 configurable, just in case a user decides to reply with
* a different code. Other options - trigger call-set up usage reporting from the cpl
* (after replying with an error code), or maybe use a different tm callback.
*/
recordEvent(0,401);
reportTermCallSetUpUsage();
}
}
if (transaction != -1) {
OSPPTransactionDelete(transaction);
}
if (call_id!=NULL) {
OSPPCallIdDelete(&call_id);
}
return valid;
}
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