0xb00b5/firegex-traffic-viewer
5
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

data handler improves, written test for nfproxy, new option on parsing fail

Browse Source
This commit is contained in:
Domingo Dirutigliano
2025-03-09 22:14:34 +01:00
parent 9dfe229a26
commit 73c40d2f5d
21 changed files with 1077 additions and 306 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
backend/binsrc/classes/nfqueue.cpp
View File

@@ -191,6 +191,12 @@ class PktRequest {
size_t total_size;
if (is_ipv6){
delete ipv6;
ipv6 = nullptr;
if (data_size >= 40){ // 40 == fixed size of ipv6 header
// Resetting payload length before parsing to libtins
uint16_t payload_len = htons(data_size-40);
memcpy(((uint8_t *)data)+4, &payload_len, 2);
}
ipv6 = new Tins::IPv6((uint8_t*)data, data_size);
if (tcp){
tcp = ipv6->find_pdu<Tins::TCP>();
@@ -204,6 +210,7 @@ class PktRequest {
total_size = ipv6->size();
}else{
delete ipv4;
ipv4 = nullptr;
ipv4 = new Tins::IP((uint8_t*)data, data_size);
if (tcp){
tcp = ipv4->find_pdu<Tins::TCP>();
@@ -311,7 +318,10 @@ class PktRequest {
set_packet(raw_pkt, raw_pkt_size);
reserialize();
action = FilterAction::MANGLE;
}catch(...){
}catch(const std::exception& e){
#ifdef DEBUG
cerr << "[DEBUG] [PktRequest.mangle_custom_pkt] " << e.what() << endl;
#endif
action = FilterAction::DROP;
}
perfrom_action(false);

2
backend/binsrc/pyproxy/pyproxy.cpp
View File

@@ -148,7 +148,7 @@ class PyProxyQueue: public NfQueue::ThreadNfQueue<PyProxyQueue> {
case PyFilterResponse::MANGLE:
pkt->mangle_custom_pkt(result.mangled_packet->c_str(), result.mangled_packet->size());
if (pkt->get_action() == NfQueue::FilterAction::DROP){
cerr << "[error] [filter_action] Failed to mangle: the packet sent is not serializzable... the packet was dropped" << endl;
cerr << "[ERROR] [filter_action] Failed to mangle: Malformed Packet... the packet was dropped" << endl;
print_blocked_reason(*result.filter_match_by);
print_exception_reason();
}else{