/*
* Get OSP token
* param msg SIP message
* param ignore1
* param ignore2
* return MODULE_RETURNCODE_TRUE success, MODULE_RETURNCODE_FALSE failure
*/
int ospCheckHeader(
struct sip_msg* msg,
char* ignore1,
char* ignore2)
{
unsigned char buffer[OSP_TOKENBUF_SIZE];
unsigned int buffersize = sizeof(buffer);
if (ospGetOspHeader(msg, buffer, &buffersize) != 0) {
return MODULE_RETURNCODE_FALSE;
} else {
return MODULE_RETURNCODE_TRUE;
}
}
/*
* Validate OSP token
* param ignore1
* param ignore2
* return MODULE_RETURNCODE_TRUE success, MODULE_RETURNCODE_FALSE failure
*/
int ospValidateHeader (
struct sip_msg* msg,
char* ignore1,
char* ignore2)
{
int errorcode;
OSPTTRANHANDLE transaction = -1;
unsigned int authorized = 0;
unsigned int timelimit = 0;
void* detaillog = NULL;
unsigned int logsize = 0;
unsigned char* callidval = (unsigned char*)"";
OSPTCALLID* callid = NULL;
unsigned callidsize = 0;
unsigned char token[OSP_TOKENBUF_SIZE];
unsigned int tokensize = sizeof(token);
osp_dest dest;
int result = MODULE_RETURNCODE_FALSE;
LOG(L_DBG, "osp: ospValidateHeader\n");
ospInitDestination(&dest);
if ((errorcode = OSPPTransactionNew(_osp_provider, &transaction) != 0)) {
LOG(L_ERR, "osp: ERROR: failed to create a new OSP transaction handle (%d)\n", errorcode);
} else if ((ospGetRpidUserpart(msg, dest.calling, sizeof(dest.calling)) != 0) &&
(ospGetFromUserpart(msg, dest.calling, sizeof(dest.calling)) != 0))
{
LOG(L_ERR, "osp: ERROR: failed to extract calling number\n");
} else if ((ospGetUriUserpart(msg, dest.called, sizeof(dest.called)) != 0) &&
(ospGetToUserpart(msg, dest.called, sizeof(dest.called)) != 0))
{
LOG(L_ERR, "osp: ERROR: failed to extract called number\n");
} else if (ospGetCallId(msg, &callid) != 0) {
LOG(L_ERR, "osp: ERROR: failed to extract call id\n");
} else if (ospGetSourceAddress(msg, dest.source, sizeof(dest.source)) != 0) {
LOG(L_ERR, "osp: ERROR: failed to extract source address\n");
} else if (ospGetOspHeader(msg, token, &tokensize) != 0) {
LOG(L_ERR, "osp: ERROR: failed to extract OSP authorization token\n");
} else {
LOG(L_INFO,
"osp: validate token for: "
"transaction_handle '%i' "
"e164_source '%s' "
"e164_dest '%s' "
"validate_call_id '%s' "
"call_id '%.*s'\n",
transaction,
dest.calling,
dest.called,
_osp_validate_callid == 0 ? "No" : "Yes",
callid->ospmCallIdLen,
callid->ospmCallIdVal);
if (_osp_validate_callid != 0) {
callidsize = callid->ospmCallIdLen;
callidval = callid->ospmCallIdVal;
}
errorcode = OSPPTransactionValidateAuthorisation(
transaction,
"",
"",
"",
"",
dest.calling,
OSPC_E164,
dest.called,
OSPC_E164,
callidsize,
callidval,
tokensize,
token,
&authorized,
&timelimit,
&logsize,
detaillog,
_osp_token_format);
if (callid->ospmCallIdLen > sizeof(dest.callid) - 1) {
dest.callidsize = sizeof(dest.callid) - 1;
} else {
dest.callidsize = callid->ospmCallIdLen;
}
memcpy(dest.callid, callid->ospmCallIdVal, dest.callidsize);
dest.callid[dest.callidsize] = 0;
dest.tid = ospGetTransactionId(transaction);
dest.type = OSPC_DESTINATION;
dest.authtime = time(NULL);
strcpy(dest.host, _osp_device_ip);
ospSaveTermDestination(&dest);
if ((errorcode == 0) && (authorized == 1)) {
LOG(L_DBG,
"osp: call is authorized for %d seconds, call_id '%.*s' transaction_id '%lld'",
timelimit,
dest.callidsize,
dest.callid,
dest.tid);
ospRecordTermTransaction(msg, transaction, dest.source, dest.calling, dest.called, dest.authtime);
result = MODULE_RETURNCODE_TRUE;
} else {
LOG(L_ERR, "osp: ERROR: token is invalid (%i)\n", errorcode);
/*
* Update terminating status code to 401 and report terminating setup usage.
* We may need to make 401 configurable, just in case a user decides to reply with
* a different code. Other options - trigger call setup usage reporting from the cpl
* (after replying with an error code), or maybe use a different tm callback.
*/
ospRecordEvent(0, 401);
}
}
if (transaction != -1) {
OSPPTransactionDelete(transaction);
}
if (callid != NULL) {
OSPPCallIdDelete(&callid);
}
return result;
}
