LCOV - code coverage report
Current view: top level - test/fuzzer - regexp.cc (source / functions) Hit Total Coverage
Test: app.info Lines: 39 42 92.9 %
Date: 2019-02-19 Functions: 4 4 100.0 %

          Line data    Source code
       1             : // Copyright 2016 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include <limits.h>
       6             : #include <stddef.h>
       7             : #include <stdint.h>
       8             : 
       9             : #include "include/v8.h"
      10             : #include "src/heap/factory.h"
      11             : #include "src/objects-inl.h"
      12             : #include "src/regexp/jsregexp.h"
      13             : #include "test/fuzzer/fuzzer-support.h"
      14             : 
      15             : namespace i = v8::internal;
      16             : 
      17          80 : void Test(v8::Isolate* isolate, i::Handle<i::JSRegExp> regexp,
      18             :           i::Handle<i::String> subject,
      19             :           i::Handle<i::RegExpMatchInfo> results_array) {
      20          80 :   v8::TryCatch try_catch(isolate);
      21             :   i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
      22          80 :   if (i::RegExpImpl::Exec(i_isolate, regexp, subject, 0, results_array)
      23         160 :           .is_null()) {
      24           0 :     i_isolate->OptionalRescheduleException(true);
      25          80 :   }
      26          80 : }
      27             : 
      28          25 : extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
      29          25 :   v8_fuzzer::FuzzerSupport* support = v8_fuzzer::FuzzerSupport::Get();
      30             :   v8::Isolate* isolate = support->GetIsolate();
      31             : 
      32             :   v8::Isolate::Scope isolate_scope(isolate);
      33          50 :   v8::HandleScope handle_scope(isolate);
      34          25 :   v8::Context::Scope context_scope(support->GetContext());
      35          50 :   v8::TryCatch try_catch(isolate);
      36             : 
      37             :   i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
      38             :   i::Factory* factory = i_isolate->factory();
      39             : 
      40          25 :   CHECK(!i_isolate->has_pending_exception());
      41          25 :   if (size > INT_MAX) return 0;
      42             :   i::MaybeHandle<i::String> maybe_source = factory->NewStringFromOneByte(
      43          50 :       i::Vector<const uint8_t>(data, static_cast<int>(size)));
      44             :   i::Handle<i::String> source;
      45          25 :   if (!maybe_source.ToHandle(&source)) {
      46           0 :     i_isolate->clear_pending_exception();
      47           0 :     return 0;
      48             :   }
      49             : 
      50             :   static const int kAllFlags = i::JSRegExp::kGlobal | i::JSRegExp::kIgnoreCase |
      51             :                                i::JSRegExp::kMultiline | i::JSRegExp::kSticky |
      52          25 :                                i::JSRegExp::kUnicode | i::JSRegExp::kDotAll;
      53             : 
      54          25 :   const uint8_t one_byte_array[6] = {'f', 'o', 'o', 'b', 'a', 'r'};
      55          25 :   const i::uc16 two_byte_array[6] = {'f', 0xD83D, 0xDCA9, 'b', 'a', 0x2603};
      56             : 
      57          25 :   CHECK(!i_isolate->has_pending_exception());
      58          25 :   i::Handle<i::RegExpMatchInfo> results_array = factory->NewRegExpMatchInfo();
      59             :   i::Handle<i::String> one_byte =
      60          25 :       factory->NewStringFromOneByte(i::Vector<const uint8_t>(one_byte_array, 6))
      61          50 :           .ToHandleChecked();
      62             :   i::Handle<i::String> two_byte =
      63          25 :       factory->NewStringFromTwoByte(i::Vector<const i::uc16>(two_byte_array, 6))
      64          50 :           .ToHandleChecked();
      65             : 
      66             :   i::Handle<i::JSRegExp> regexp;
      67             :   {
      68          25 :     CHECK(!i_isolate->has_pending_exception());
      69          25 :     v8::TryCatch try_catch(isolate);
      70             :     // Create a string so that we can calculate a hash from the input data.
      71          25 :     std::string str = std::string(reinterpret_cast<const char*>(data), size);
      72             :     i::JSRegExp::Flags flag = static_cast<i::JSRegExp::Flags>(
      73          25 :         std::hash<std::string>()(str) % (kAllFlags + 1));
      74             :     i::MaybeHandle<i::JSRegExp> maybe_regexp =
      75          25 :         i::JSRegExp::New(i_isolate, source, flag);
      76          25 :     if (!maybe_regexp.ToHandle(&regexp)) {
      77           5 :       i_isolate->clear_pending_exception();
      78             :       return 0;
      79          20 :     }
      80             :   }
      81          20 :   Test(isolate, regexp, one_byte, results_array);
      82          20 :   Test(isolate, regexp, two_byte, results_array);
      83          20 :   Test(isolate, regexp, factory->empty_string(), results_array);
      84          20 :   Test(isolate, regexp, source, results_array);
      85             :   isolate->RequestGarbageCollectionForTesting(
      86          20 :       v8::Isolate::kFullGarbageCollection);
      87          20 :   CHECK(!i_isolate->has_pending_exception());
      88             :   return 0;
      89          75 : }

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