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// Copyright 2017 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 <cstring>
#include <memory>
#include <string>
#include <vector>
#include "core/fxcrt/fx_system.h"
#include "public/cpp/fpdf_scopers.h"
#include "public/fpdf_annot.h"
#include "public/fpdf_edit.h"
#include "public/fpdfview.h"
#include "testing/embedder_test.h"
#include "testing/fake_file_access.h"
#include "testing/gmock/include/gmock/gmock-matchers.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/utils/path_service.h"
namespace {
class FileAccess : public FPDF_FILEACCESS {
public:
explicit FileAccess(const std::string& file_name) {
std::string file_path;
if (!PathService::GetTestFilePath(file_name, &file_path))
return;
file_contents_ = GetFileContents(file_path.c_str(), &file_length_);
if (!file_contents_)
return;
m_FileLen = static_cast<unsigned long>(file_length_);
m_GetBlock = SGetBlock;
m_Param = this;
}
private:
int GetBlockImpl(unsigned long pos, unsigned char* pBuf, unsigned long size) {
memcpy(pBuf, file_contents_.get() + pos, size);
return size;
}
static int SGetBlock(void* param,
unsigned long pos,
unsigned char* pBuf,
unsigned long size) {
return static_cast<FileAccess*>(param)->GetBlockImpl(pos, pBuf, size);
}
size_t file_length_;
std::unique_ptr<char, pdfium::FreeDeleter> file_contents_;
};
} // namespace
class CPDF_CreatorEmbedderTest : public EmbedderTest {};
TEST_F(CPDF_CreatorEmbedderTest, SavedDocsAreEqualAfterParse) {
ASSERT_TRUE(OpenDocument("annotation_stamp_with_ap.pdf"));
// Save without additional data reading.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
const std::string saved_doc_1 = GetString();
ClearString();
{
// Do some read only operations.
ASSERT_GE(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
EXPECT_EQ(595, FPDFBitmap_GetWidth(bitmap.get()));
EXPECT_EQ(842, FPDFBitmap_GetHeight(bitmap.get()));
UnloadPage(page);
}
// Save when we have additional loaded data.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
const std::string saved_doc_2 = GetString();
ClearString();
// The sizes of saved docs should be equal.
EXPECT_EQ(saved_doc_1.size(), saved_doc_2.size());
}
TEST_F(CPDF_CreatorEmbedderTest, BUG_873) {
EXPECT_TRUE(OpenDocument("embedded_attachments.pdf"));
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
// Cannot match second part of the ID since it is randomly generated.
std::string saved_data = GetString();
const char kTrailerBeforeSecondID[] =
"trailer\r\n<</Info 9 0 R /Root 11 0 R /Size "
"36/ID[<D889EB6B9ADF88E5EDA7DC08FE85978B><";
ASSERT_THAT(saved_data, testing::HasSubstr(kTrailerBeforeSecondID));
size_t trailer_start = saved_data.find(kTrailerBeforeSecondID);
constexpr size_t kIdLen = 32;
size_t trailer_continuation =
trailer_start + strlen(kTrailerBeforeSecondID) + kIdLen;
std::string data_after_second_id = saved_data.substr(trailer_continuation);
EXPECT_THAT(data_after_second_id, testing::StartsWith(">]>>\r\n"));
}
TEST_F(CPDF_CreatorEmbedderTest, SaveLinearizedInfo) {
FileAccess file_acc("linearized.pdf");
FakeFileAccess fake_acc(&file_acc);
avail_ = FPDFAvail_Create(fake_acc.GetFileAvail(), fake_acc.GetFileAccess());
while (PDF_DATA_AVAIL !=
FPDFAvail_IsDocAvail(avail_, fake_acc.GetDownloadHints())) {
fake_acc.SetRequestedDataAvailable();
}
document_ = FPDFAvail_GetDocument(avail_, nullptr);
ASSERT_TRUE(document_);
// Load second page, to parse additional crossref sections.
while (PDF_DATA_AVAIL !=
FPDFAvail_IsPageAvail(avail_, 1, fake_acc.GetDownloadHints())) {
fake_acc.SetRequestedDataAvailable();
}
// Simulate downloading of whole file.
fake_acc.SetWholeFileAvailable();
// Save document.
EXPECT_TRUE(FPDF_SaveAsCopy(document_, this, 0));
const std::string saved_doc = GetString();
EXPECT_THAT(saved_doc, ::testing::HasSubstr("/Info"));
}
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