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authorLei Zhang <thestig@chromium.org>2018-05-25 21:47:19 +0000
committerChromium commit bot <commit-bot@chromium.org>2018-05-25 21:47:19 +0000
commitfa4d93a08d5cd4f349c480b194a3e795273b27ed (patch)
tree522fdac3c130bf525814c0c745a9cffb2f6d6a4b /testing/fuzzers/pdf_codec_jbig2_fuzzer.cc
parent0d86f765b8361b7f9f3a5fcc659de2f52c806bd0 (diff)
downloadpdfium-fa4d93a08d5cd4f349c480b194a3e795273b27ed.tar.xz
Move fuzzers to testing/fuzzers.
Move them out of testing/libfuzzer, to make it possible to pull libfuzzer into that directory. Leave testing/libfuzzer/BUILD.gn there for now as a transitional build file. BUG=pdfium:1088 Change-Id: I4126d89dd3e075ac63477a4860e029c135866dbe Reviewed-on: https://pdfium-review.googlesource.com/32896 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'testing/fuzzers/pdf_codec_jbig2_fuzzer.cc')
-rw-r--r--testing/fuzzers/pdf_codec_jbig2_fuzzer.cc59
1 files changed, 59 insertions, 0 deletions
diff --git a/testing/fuzzers/pdf_codec_jbig2_fuzzer.cc b/testing/fuzzers/pdf_codec_jbig2_fuzzer.cc
new file mode 100644
index 0000000000..7b8e2aac33
--- /dev/null
+++ b/testing/fuzzers/pdf_codec_jbig2_fuzzer.cc
@@ -0,0 +1,59 @@
+// 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/fxcrt/fx_safe_types.h"
+#include "core/fxge/dib/cfx_dibitmap.h"
+#include "core/fxge/fx_dib.h"
+#include "third_party/base/ptr_util.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;
+
+ static constexpr uint32_t kMemLimit = 512000000; // 512 MB
+ static constexpr uint32_t k1bppRgbComponents = 4; // From CFX_DIBitmap impl.
+ FX_SAFE_UINT32 mem = width;
+ mem *= height;
+ mem *= k1bppRgbComponents;
+ if (!mem.IsValid() || mem.ValueOrDie() > kMemLimit)
+ return 0;
+
+ auto bitmap = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!bitmap->Create(width, height, FXDIB_1bppRgb))
+ return 0;
+
+ auto stream = pdfium::MakeUnique<CPDF_Stream>();
+ stream->AsStream()->SetData(data, size);
+
+ auto src_stream = pdfium::MakeRetain<CPDF_StreamAcc>(stream->AsStream());
+ src_stream->LoadAllDataRaw();
+
+ 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;
+}