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// Copyright 2019 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "public/fpdf_sysfontinfo.h"
#include <string>
#include <vector>
#include "build/build_config.h"
#include "core/fxcrt/compiler_specific.h"
#include "testing/embedder_test.h"
#include "testing/embedder_test_environment.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
extern "C" {
void FakeRelease(FPDF_SYSFONTINFO* pThis) {}
void FakeEnumFonts(FPDF_SYSFONTINFO* pThis, void* pMapper) {}
void* FakeMapFont(FPDF_SYSFONTINFO* pThis,
int weight,
FPDF_BOOL bItalic,
int charset,
int pitch_family,
const char* face,
FPDF_BOOL* bExact) {
// Any non-null return will do.
return pThis;
}
void* FakeGetFont(FPDF_SYSFONTINFO* pThis, const char* face) {
// Any non-null return will do.
return pThis;
}
unsigned long FakeGetFontData(FPDF_SYSFONTINFO* pThis,
void* hFont,
unsigned int table,
unsigned char* buffer,
unsigned long buf_size) {
return 0;
}
unsigned long FakeGetFaceName(FPDF_SYSFONTINFO* pThis,
void* hFont,
char* buffer,
unsigned long buf_size) {
return 0;
}
int FakeGetFontCharset(FPDF_SYSFONTINFO* pThis, void* hFont) {
return 1;
}
void FakeDeleteFont(FPDF_SYSFONTINFO* pThis, void* hFont) {}
} // extern "C"
class FPDFUnavailableSysFontInfoEmbedderTest : public EmbedderTest {
public:
FPDFUnavailableSysFontInfoEmbedderTest() = default;
~FPDFUnavailableSysFontInfoEmbedderTest() override = default;
void SetUp() override {
EmbedderTest::SetUp();
font_info_.version = 1;
font_info_.Release = FakeRelease;
font_info_.EnumFonts = FakeEnumFonts;
font_info_.MapFont = FakeMapFont;
font_info_.GetFont = FakeGetFont;
font_info_.GetFontData = FakeGetFontData;
font_info_.GetFaceName = FakeGetFaceName;
font_info_.GetFontCharset = FakeGetFontCharset;
font_info_.DeleteFont = FakeDeleteFont;
FPDF_SetSystemFontInfo(&font_info_);
}
void TearDown() override {
FPDF_SetSystemFontInfo(nullptr);
EmbedderTest::TearDown();
// Bouncing the library is the only reliable way to fully undo the initial
// FPDF_SetSystemFontInfo() call at the moment.
EmbedderTestEnvironment::GetInstance()->TearDown();
EmbedderTestEnvironment::GetInstance()->SetUp();
}
FPDF_SYSFONTINFO font_info_;
};
class FPDFSysFontInfoEmbedderTest : public EmbedderTest {
public:
FPDFSysFontInfoEmbedderTest() = default;
~FPDFSysFontInfoEmbedderTest() override = default;
void SetUp() override {
EmbedderTest::SetUp();
font_info_ = FPDF_GetDefaultSystemFontInfo();
ASSERT_TRUE(font_info_);
FPDF_SetSystemFontInfo(font_info_);
}
void TearDown() override {
EmbedderTest::TearDown();
// After releasing `font_info_` from PDFium, it is safe to free it.
FPDF_SetSystemFontInfo(nullptr);
FPDF_FreeDefaultSystemFontInfo(font_info_);
// Bouncing the library is the only reliable way to fully undo the initial
// FPDF_SetSystemFontInfo() call at the moment.
EmbedderTestEnvironment::GetInstance()->TearDown();
EmbedderTestEnvironment::GetInstance()->SetUp();
}
FPDF_SYSFONTINFO* font_info_;
};
} // namespace
TEST_F(FPDFUnavailableSysFontInfoEmbedderTest, Bug972518) {
ASSERT_TRUE(OpenDocument("bug_972518.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
UnloadPage(page);
}
TEST_F(FPDFSysFontInfoEmbedderTest, DefaultSystemFontInfo) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
// Not checking the rendering because it will depend on the fonts installed.
ScopedFPDFBitmap bitmap = RenderPage(page);
ASSERT_EQ(200, FPDFBitmap_GetWidth(bitmap.get()));
ASSERT_EQ(200, FPDFBitmap_GetHeight(bitmap.get()));
}
UnloadPage(page);
}
TEST_F(FPDFSysFontInfoEmbedderTest, DefaultTTFMap) {
static constexpr int kExpectedCharsets[] = {
FXFONT_ANSI_CHARSET, FXFONT_SHIFTJIS_CHARSET,
FXFONT_HANGEUL_CHARSET, FXFONT_GB2312_CHARSET,
FXFONT_CHINESEBIG5_CHARSET, FXFONT_ARABIC_CHARSET,
FXFONT_CYRILLIC_CHARSET, FXFONT_EASTERNEUROPEAN_CHARSET,
};
std::vector<int> charsets;
const FPDF_CharsetFontMap* cfmap = FPDF_GetDefaultTTFMap();
ASSERT_TRUE(cfmap);
// Stop at either end mark.
while (cfmap->charset != -1 && cfmap->fontname) {
charsets.push_back(cfmap->charset);
// SAFETY: requires FPDF_GetDefaultTTFMap() to provide a sentinel.
UNSAFE_BUFFERS(++cfmap);
}
// Confirm end marks only occur as a pair.
EXPECT_EQ(cfmap->charset, -1);
EXPECT_EQ(cfmap->fontname, nullptr);
EXPECT_THAT(charsets, testing::UnorderedElementsAreArray(kExpectedCharsets));
}
TEST_F(FPDFSysFontInfoEmbedderTest, DefaultTTFMapCountAndEntries) {
static constexpr int kExpectedCharsets[] = {
FXFONT_ANSI_CHARSET,
FXFONT_GB2312_CHARSET,
FXFONT_CHINESEBIG5_CHARSET,
FXFONT_SHIFTJIS_CHARSET,
FXFONT_HANGEUL_CHARSET,
FXFONT_CYRILLIC_CHARSET,
FXFONT_EASTERNEUROPEAN_CHARSET,
FXFONT_ARABIC_CHARSET,
};
static const std::string kExpectedFontNames[] = {
"Helvetica", "SimSun", "MingLiU", "MS Gothic", "Batang", "Arial",
#if BUILDFLAG(IS_WIN)
"Tahoma",
#else
"Arial",
#endif
"Arial",
};
std::vector<int> charsets;
std::vector<const char*> font_names;
const size_t count = FPDF_GetDefaultTTFMapCount();
for (size_t i = 0; i < count; ++i) {
const FPDF_CharsetFontMap* entry = FPDF_GetDefaultTTFMapEntry(i);
ASSERT_TRUE(entry);
charsets.push_back(entry->charset);
font_names.push_back(entry->fontname);
}
EXPECT_THAT(charsets, testing::ElementsAreArray(kExpectedCharsets));
EXPECT_THAT(font_names, testing::ElementsAreArray(kExpectedFontNames));
// Test out of bound indices.
EXPECT_FALSE(FPDF_GetDefaultTTFMapEntry(count));
EXPECT_FALSE(FPDF_GetDefaultTTFMapEntry(9999));
}