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#include "CommsigniaLayerFactory.hh"
#include "loggers.hh"
CommsigniaLayer::CommsigniaLayer(const std::string & p_type, const std::string & param) : Layer(p_type), _params(), _c2p_recv{0}, _802_11p_hdr{0}, _c2p_llc_hdr{0} {
loggers::get_instance().log(">>> CommsigniaLayer::CommsigniaLayer: %s, %s", to_string().c_str(), param.c_str());
Params::const_iterator it = _params.find("mac_src");
if (it == _params.cend()) {
_params.insert(std::pair<std::string, std::string>(std::string("mac_src"), "000000000000"));
}
it = _params.find("mac_bc");
if (it == _params.cend()) {
_params.insert(std::pair<std::string, std::string>(std::string("mac_bc"), "FFFFFFFFFFFF"));
}
it = _params.find(Params::eth_type);
if (it == _params.cend()) {
_params.insert(std::pair<std::string, std::string>(std::string("eth_type"), "8947"));
}
it = _params.find(Params::interface_id);
if (it == _params.cend()) {
_params.insert(std::pair<std::string, std::string>(std::string("interface_id"), "1"));
}
//_params.log();
}
void CommsigniaLayer::sendData(OCTETSTRING& data, Params& params) {
loggers::get_instance().log_msg(">>> CommsigniaLayer::sendData: ", data);
}
void CommsigniaLayer::receiveData(OCTETSTRING& data, Params& params) {
loggers::get_instance().log_msg(">>> CommsigniaLayer::receiveData: ", data);
const unsigned char* p = static_cast<const unsigned char *>(data);
const CommsigniaLayer::c2p_recv* r = (const CommsigniaLayer::c2p_recv*)p;
//loggers::get_instance().log("CommsigniaLayer::receiveData: version=%02x", r->version);
//loggers::get_instance().log("CommsigniaLayer::receiveData: timestamp1=%08x", ntohl(r->timestamp_sec));
//loggers::get_instance().log("CommsigniaLayer::receiveData: timestamp2=%08x", ntohl(r->timestamp_msec));
//loggers::get_instance().log("CommsigniaLayer::receiveData: timestamp2=%08x", ntohl(r->timestamp_msec));
//loggers::get_instance().log("CommsigniaLayer::receiveData: antenna=%02x", r->antenna);
//loggers::get_instance().log("CommsigniaLayer::receiveData: rssi_ant2=%02x", r->rssi_ant2);
//loggers::get_instance().log("CommsigniaLayer::receiveData: noise_ant1=%02x", r->noise_ant1);
//loggers::get_instance().log("CommsigniaLayer::receiveData: noise_ant2=%02x", r->noise_ant2);
// Filtering on antenna index
if (r->antenna != static_cast<unsigned char>(std::strtoul(_params[Params::interface_id].c_str(), NULL, 10))) {
// Discard packet
return;
} // else, continue
const CommsigniaLayer::c2p_802_11p_hdr* h = (const CommsigniaLayer::c2p_802_11p_hdr*)(p + sizeof(CommsigniaLayer::c2p_recv));
//loggers::get_instance().log("CommsigniaLayer::receiveData: frame_ctrl=%04x", ntohs(h->frame_ctrl));
OCTETSTRING dst = OCTETSTRING(6, (const unsigned char*)&h->dst_addr);
//loggers::get_instance().log_msg("CommsigniaLayer::receiveData: dst: ", dst);
OCTETSTRING src = OCTETSTRING(6, (const unsigned char*)&h->src_addr);
//loggers::get_instance().log_msg("CommsigniaLayer::receiveData: src: ", src);
// Filtering on source MAC address of the packet
std::string str;
Params::const_iterator it = params.find(Params::mac_src); // Find in provided parameters, params
if (it != params.cend()) {
str = it->second;
} else {
str = _params[Params::mac_src];
}
loggers::get_instance().log("CommsigniaLayer::receiveData: compare %s with %s", str.c_str(), static_cast<const char *>(oct2str(src)));
if (str.compare(static_cast<const char *>(oct2str(src))) == 0) {
// Discard packet
return;
} // else, continue
const CommsigniaLayer::c2p_llc_hdr* l;
int length;
if ((ntohs(h->frame_ctrl) & 0xf000) == 0x8000) {
l = (const CommsigniaLayer::c2p_llc_hdr*)(p + sizeof(CommsigniaLayer::c2p_recv) + sizeof(CommsigniaLayer::c2p_802_11p_hdr) + sizeof(CommsigniaLayer::c2p_qos_ctrl));
length = sizeof(CommsigniaLayer::c2p_recv) + sizeof(CommsigniaLayer::c2p_802_11p_hdr) + sizeof(CommsigniaLayer::c2p_qos_ctrl) + sizeof(CommsigniaLayer::c2p_llc_hdr);
} else {
l = (const CommsigniaLayer::c2p_llc_hdr*)(p + sizeof(CommsigniaLayer::c2p_recv) + sizeof(CommsigniaLayer::c2p_802_11p_hdr));
length = sizeof(CommsigniaLayer::c2p_recv) + sizeof(CommsigniaLayer::c2p_802_11p_hdr) + sizeof(CommsigniaLayer::c2p_llc_hdr);
}
//loggers::get_instance().log("CommsigniaLayer::receiveData: dsap=%02x", l->dsap);
//loggers::get_instance().log("CommsigniaLayer::receiveData: ssap=%02x", l->ssap);
//loggers::get_instance().log("CommsigniaLayer::receiveData: type=%04x", l->type);
// Check ether type
OCTETSTRING et = str2oct(_params[Params::eth_type].c_str());
//loggers::get_instance().log_msg("CommsigniaLayer::receiveData: ether type convert: ", et);
//loggers::get_instance().log("CommsigniaLayer::receiveData: ether type convert: et[1]=%02x et[0]=%02x", et[1].get_octet(), et[0].get_octet());
if ((et[1].get_octet() == (unsigned char)((l->type & 0xff00) >> 8)) && (et[0].get_octet() == (unsigned char)(l->type & 0xff))) { // Warning: Network ordered bytes
// Extract payload
data = OCTETSTRING(data.lengthof() - length, length + static_cast<const unsigned char *>(data));
//loggers::get_instance().log_msg("CommsigniaLayer::receiveData: payload for upper layer:", data);
// Update params
CHARSTRING s = oct2str(dst);
params[Params::mac_dst] = std::string(static_cast<const char *>(s));
s = oct2str(src);
params[Params::mac_src] = std::string(static_cast<const char *>(s));
receiveToAllLayers(data, params);
} // else, nothing to do
}
CommsigniaLayerFactory CommsigniaLayerFactory::_f;