void readFrom(const char *buffer, std::size_t length) {
if (buffer == NULL)
throw nrpe::nrpe_exception("No buffer.");
if (length != get_packet_length())
throw nrpe::nrpe_exception("Invalid packet length: " + strEx::s::xtos(length) + " != " + strEx::s::xtos(get_packet_length()) + " configured payload is: " + strEx::s::xtos(get_payload_length()));
const nrpe::data::packet *p = reinterpret_cast<const nrpe::data::packet*>(buffer);
type_ = swap_bytes::ntoh<int16_t>(p->packet_type);
if ((type_ != nrpe::data::queryPacket)&&(type_ != nrpe::data::responsePacket))
throw nrpe::nrpe_exception("Invalid packet type: " + strEx::s::xtos(type_));
version_ = swap_bytes::ntoh<int16_t>(p->packet_version);
if (version_ != nrpe::data::version2)
throw nrpe::nrpe_exception("Invalid packet version." + strEx::s::xtos(version_));
crc32_ = swap_bytes::ntoh<u_int32_t>(p->crc32_value);
// Verify CRC32
// @todo Fix this, currently we need a const buffer so we cannot change the CRC to 0.
char * tb = new char[length+1];
memcpy(tb, buffer, length);
nrpe::data::packet *p2 = reinterpret_cast<nrpe::data::packet*>(tb);
p2->crc32_value = 0;
calculatedCRC32_ = calculate_crc32(tb, get_packet_length());
delete [] tb;
if (crc32_ != calculatedCRC32_)
throw nrpe::nrpe_exception("Invalid checksum in NRPE packet: " + strEx::s::xtos(crc32_) + "!=" + strEx::s::xtos(calculatedCRC32_));
// Verify CRC32 end
result_ = swap_bytes::ntoh<int16_t>(p->result_code);
payload_ = fetch_payload(p);
}
static int ki_isup_to_json(sip_msg_t *_m, int proto)
{
struct isup_state isup_state = { 0, };
const uint8_t *data;
int opc, dpc, mtp_type, int_len, rc;
size_t len;
free((char *) isup_last);
srjson_DeleteDoc(isup_json);
isup_last = NULL;
isup_json = NULL;
mtp_type = 0;
data = fetch_payload(_m, "$var(payload)", &int_len);
if (!data)
return -1;
if (int_len < 0) {
LM_ERR("Payload length low %d\n", int_len);
return -1;
}
len = int_len;
data = ss7_extract_payload(data, &len, proto, &opc, &dpc, &mtp_type);
if (!data)
return -1;
if (mtp_type != MTP_ISUP) {
LM_DBG("Non ISUP payload %d\n", mtp_type);
return -1;
}
/* parse isup... */
isup_state.json = srjson_NewDoc(NULL);
if (!isup_state.json) {
LM_ERR("Failed to allocate JSON document\n");
return -1;
}
isup_state.json->root = srjson_CreateObject(isup_state.json);
if (!isup_state.json->root) {
LM_ERR("Failed to allocate JSON object\n");
srjson_DeleteDoc(isup_state.json);
return -1;
}
rc = isup_parse(data, len, &isup_state);
if (rc != 0) {
srjson_DeleteDoc(isup_state.json);
return rc;
}
srjson_AddNumberToObject(isup_state.json, isup_state.json->root, "opc", opc);
srjson_AddNumberToObject(isup_state.json, isup_state.json->root, "dpc", dpc);
isup_last = srjson_PrintUnformatted(isup_state.json, isup_state.json->root);
isup_json = isup_state.json;
return 1;
}
