Files
uWebSockets/fuzzing/MockedEchoServer.cpp
T
2020-08-12 23:46:11 +02:00

92 lines
2.7 KiB
C++

#include "App.h"
#include "helpers.h"
/* This function pushes data to the uSockets mock */
extern "C" void us_loop_read_mocked_data(struct us_loop *loop, char *data, unsigned int size);
us_listen_socket_t *listenSocket;
/* ws->getUserData returns one of these */
struct PerSocketData {
int nothing;
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
/* First byte determines what compressor to use */
if (size < 1) {
return 0;
}
uWS::CompressOptions compressors[] = {
uWS::DISABLED,
uWS::SHARED_COMPRESSOR,
uWS::DEDICATED_COMPRESSOR_3KB,
uWS::DEDICATED_COMPRESSOR_4KB,
uWS::DEDICATED_COMPRESSOR_8KB,
uWS::DEDICATED_COMPRESSOR_16KB,
uWS::DEDICATED_COMPRESSOR_32KB,
uWS::DEDICATED_COMPRESSOR_64KB,
uWS::DEDICATED_COMPRESSOR_128KB,
uWS::DEDICATED_COMPRESSOR_256KB
};
uWS::CompressOptions compressor = compressors[data[0] % 10];
data++;
size--;
/* Very simple WebSocket echo server */
auto app = uWS::TemplatedApp<false>(uWS::App().ws<PerSocketData>("/*", {
/* Settings */
.compression = compressor,
/* We want this to be low so that we can hit it, yet bigger than 256 */
.maxPayloadLength = 300,
.idleTimeout = 10,
/* Handlers */
.open = [](auto *ws) {
//if (req->getHeader("close_me").length()) {
// ws->close();
//} else if (req->getHeader("end_me").length()) {
// ws->end(1006);
//}
},
.message = [](auto *ws, std::string_view message, uWS::OpCode opCode) {
if (message.length() > 300) {
/* Inform the sanitizer of the fault */
fprintf(stderr, "Too long message passed\n");
free((void *) -1);
}
if (message.length() && message[0] == 'C') {
ws->close();
} else if (message.length() && message[0] == 'E') {
ws->end(1006);
} else {
ws->send(message, opCode, true);
}
},
.drain = [](auto *ws) {
/* Check getBufferedAmount here */
},
.ping = [](auto *ws) {
},
.pong = [](auto *ws) {
},
.close = [](auto *ws, int code, std::string_view message) {
}
}).listen(9001, [](us_listen_socket_t *listenSocket) {
::listenSocket = listenSocket;
})).run();
us_loop_read_mocked_data((struct us_loop *) uWS::Loop::get(), (char *) makePadded(data, size), size);
us_listen_socket_close(0, listenSocket);
uWS::Loop::get()->free();
return 0;
}