зеркало из https://github.com/mozilla/gecko-dev.git
136 строки
4.3 KiB
C++
136 строки
4.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <assert.h>
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#include <stdint.h>
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#include <memory>
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#include "blapi.h"
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#include "prinit.h"
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#include "ssl.h"
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#include "shared.h"
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#include "tls_client_config.h"
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#include "tls_common.h"
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#include "tls_mutators.h"
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#include "tls_socket.h"
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#ifdef IS_DTLS
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__attribute__((constructor)) static void set_is_dtls() {
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TlsMutators::SetIsDTLS();
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}
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#endif
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PRFileDesc* ImportFD(PRFileDesc* model, PRFileDesc* fd) {
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#ifdef IS_DTLS
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return DTLS_ImportFD(model, fd);
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#else
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return SSL_ImportFD(model, fd);
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#endif
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}
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static SECStatus AuthCertificateHook(void* arg, PRFileDesc* fd, PRBool checksig,
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PRBool isServer) {
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assert(!isServer);
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auto config = reinterpret_cast<ClientConfig*>(arg);
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return config->FailCertificateAuthentication() ? SECFailure : SECSuccess;
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}
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static void SetSocketOptions(PRFileDesc* fd,
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std::unique_ptr<ClientConfig>& config) {
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SECStatus rv = SSL_OptionSet(fd, SSL_NO_CACHE, config->EnableCache());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_ENABLE_EXTENDED_MASTER_SECRET,
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config->EnableExtendedMasterSecret());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_REQUIRE_DH_NAMED_GROUPS,
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config->RequireDhNamedGroups());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_ENABLE_FALSE_START, config->EnableFalseStart());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_ENABLE_DEFLATE, config->EnableDeflate());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_CBC_RANDOM_IV, config->EnableCbcRandomIv());
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assert(rv == SECSuccess);
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rv = SSL_OptionSet(fd, SSL_REQUIRE_SAFE_NEGOTIATION,
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config->RequireSafeNegotiation());
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assert(rv == SECSuccess);
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#ifndef IS_DTLS
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rv =
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SSL_OptionSet(fd, SSL_ENABLE_RENEGOTIATION, SSL_RENEGOTIATE_UNRESTRICTED);
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assert(rv == SECSuccess);
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#endif
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}
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// This is only called when we set SSL_ENABLE_FALSE_START=1,
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// so we can always just set *canFalseStart=true.
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static SECStatus CanFalseStartCallback(PRFileDesc* fd, void* arg,
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PRBool* canFalseStart) {
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*canFalseStart = true;
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return SECSuccess;
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}
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static void SetupCallbacks(PRFileDesc* fd, ClientConfig* config) {
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SECStatus rv = SSL_AuthCertificateHook(fd, AuthCertificateHook, config);
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assert(rv == SECSuccess);
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rv = SSL_SetCanFalseStartCallback(fd, CanFalseStartCallback, nullptr);
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assert(rv == SECSuccess);
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t len) {
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std::unique_ptr<NSSDatabase> db(new NSSDatabase());
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assert(db != nullptr);
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EnableAllProtocolVersions();
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std::unique_ptr<ClientConfig> config(new ClientConfig(data, len));
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// Reset the RNG state.
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assert(RNG_RandomUpdate(NULL, 0) == SECSuccess);
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// Create and import dummy socket.
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std::unique_ptr<DummyPrSocket> socket(new DummyPrSocket(data, len));
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static PRDescIdentity id = PR_GetUniqueIdentity("fuzz-client");
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ScopedPRFileDesc fd(DummyIOLayerMethods::CreateFD(id, socket.get()));
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PRFileDesc* ssl_fd = ImportFD(nullptr, fd.get());
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assert(ssl_fd == fd.get());
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// Probably not too important for clients.
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SSL_SetURL(ssl_fd, "server");
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FixTime(ssl_fd);
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SetSocketOptions(ssl_fd, config);
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EnableAllCipherSuites(ssl_fd);
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SetupCallbacks(ssl_fd, config.get());
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DoHandshake(ssl_fd, false);
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// Release all SIDs.
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SSL_ClearSessionCache();
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return 0;
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}
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extern "C" size_t LLVMFuzzerCustomMutator(uint8_t* data, size_t size,
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size_t max_size, unsigned int seed) {
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using namespace TlsMutators;
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return CustomMutate({DropRecord, ShuffleRecords, DuplicateRecord,
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TruncateRecord, FragmentRecord},
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data, size, max_size, seed);
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}
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extern "C" size_t LLVMFuzzerCustomCrossOver(const uint8_t* data1, size_t size1,
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const uint8_t* data2, size_t size2,
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uint8_t* out, size_t max_out_size,
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unsigned int seed) {
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return TlsMutators::CrossOver(data1, size1, data2, size2, out, max_out_size,
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seed);
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}
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