Green Sky
b1fe064484
73d9b845a3 cleanup: Remove old type-ordered event getters. b0840cc02d feat: add ngc events 7df9a51349 refactor: Make event dispatch ordered by receive time. bcb6592af5 test: Add C++ classes wrapping system interfaces. 4cea4f9ca4 fix: Make all the fuzzers work again, and add a test for protodump. c4e209ea1d refactor: Factor out malloc+memcpy into memdup. 87bcc4322d fix: Remove fatal error for non-erroneous case REVERT: 6d634674a9 cleanup: Remove old type-ordered event getters. REVERT: d1d48d1dfc feat: add ngc events REVERT: 994ffecc6b refactor: Make event dispatch ordered by receive time. git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: 73d9b845a310c3f56d2d6d77ed56b93d84256d6e
95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
#include "forwarding.h"
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#include <cassert>
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#include <cstring>
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#include <memory>
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#include <optional>
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#include "../testing/fuzzing/fuzz_support.h"
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#include "../testing/fuzzing/fuzz_tox.h"
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namespace {
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std::optional<std::tuple<IP_Port, IP_Port, const uint8_t *, size_t>> prepare(Fuzz_Data &input)
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{
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CONSUME_OR_RETURN_VAL(const uint8_t *ipp_packed, input, SIZE_IP_PORT, std::nullopt);
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IP_Port ipp;
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unpack_ip_port(&ipp, ipp_packed, SIZE_IP6, true);
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CONSUME_OR_RETURN_VAL(const uint8_t *forwarder_packed, input, SIZE_IP_PORT, std::nullopt);
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IP_Port forwarder;
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unpack_ip_port(&forwarder, forwarder_packed, SIZE_IP6, true);
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// 2 bytes: size of the request
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CONSUME_OR_RETURN_VAL(const uint8_t *data_size_bytes, input, sizeof(uint16_t), std::nullopt);
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uint16_t data_size;
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std::memcpy(&data_size, data_size_bytes, sizeof(uint16_t));
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// data bytes (max 64K)
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CONSUME_OR_RETURN_VAL(const uint8_t *data, input, data_size, std::nullopt);
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return {{ipp, forwarder, data, data_size}};
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}
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void TestSendForwardRequest(Fuzz_Data &input)
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{
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CONSUME1_OR_RETURN(const uint16_t, chain_length, input);
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const uint16_t chain_keys_size = chain_length * CRYPTO_PUBLIC_KEY_SIZE;
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CONSUME_OR_RETURN(const uint8_t *chain_keys, input, chain_keys_size);
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auto prep = prepare(input);
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if (!prep.has_value()) {
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return;
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}
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auto [ipp, forwarder, data, data_size] = prep.value();
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// rest of the fuzz data is input for malloc and network
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Fuzz_System sys(input);
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Ptr<Logger> logger(logger_new(), logger_kill);
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Ptr<Networking_Core> net(new_networking_ex(logger.get(), sys.mem.get(), sys.ns.get(), &ipp.ip,
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ipp.port, ipp.port + 100, nullptr),
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kill_networking);
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if (net == nullptr) {
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return;
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}
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send_forward_request(net.get(), &forwarder, chain_keys, chain_length, data, data_size);
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}
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void TestForwardReply(Fuzz_Data &input)
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{
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CONSUME1_OR_RETURN(const uint16_t, sendback_length, input);
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CONSUME_OR_RETURN(const uint8_t *sendback, input, sendback_length);
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auto prep = prepare(input);
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if (!prep.has_value()) {
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return;
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}
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auto [ipp, forwarder, data, data_size] = prep.value();
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// rest of the fuzz data is input for malloc and network
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Fuzz_System sys(input);
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Ptr<Logger> logger(logger_new(), logger_kill);
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Ptr<Networking_Core> net(new_networking_ex(logger.get(), sys.mem.get(), sys.ns.get(), &ipp.ip,
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ipp.port, ipp.port + 100, nullptr),
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kill_networking);
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if (net == nullptr) {
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return;
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}
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forward_reply(net.get(), &forwarder, sendback, sendback_length, data, data_size);
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}
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} // namespace
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
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{
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fuzz_select_target<TestSendForwardRequest, TestForwardReply>(data, size);
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return 0;
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}
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