// Copyright 2016 The PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include <cstdint> #include "core/fpdfapi/parser/cpdf_stream.h" #include "core/fpdfapi/parser/cpdf_stream_acc.h" #include "core/fxcodec/JBig2_DocumentContext.h" #include "core/fxcodec/codec/ccodec_jbig2module.h" #include "core/fxcodec/jbig2/JBig2_Context.h" #include "core/fxge/fx_dib.h" static uint32_t GetInteger(const uint8_t* data) { return data[0] | data[1] << 8 | data[2] << 16 | data[3] << 24; } extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { const size_t kParameterSize = 8; if (size < kParameterSize) return 0; uint32_t width = GetInteger(data); uint32_t height = GetInteger(data + 4); size -= kParameterSize; data += kParameterSize; std::unique_ptr<CFX_DIBitmap> bitmap(new CFX_DIBitmap); if (!bitmap->Create(width, height, FXDIB_1bppRgb)) return 0; std::unique_ptr<CPDF_Object> stream(new CPDF_Stream); stream->AsStream()->SetData(data, size); CPDF_StreamAcc src_stream; src_stream.LoadAllData(stream->AsStream(), true); CCodec_Jbig2Module module; CCodec_Jbig2Context jbig2_context; std::unique_ptr<JBig2_DocumentContext> document_context; FXCODEC_STATUS status = module.StartDecode( &jbig2_context, &document_context, width, height, &src_stream, nullptr, bitmap->GetBuffer(), bitmap->GetPitch(), nullptr); while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) status = module.ContinueDecode(&jbig2_context, nullptr); return 0; }