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// Copyright 2015 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 "testing/test_support.h"
#include <stdio.h>
#include <string.h>
#include "testing/utils/path_service.h"
#ifdef PDF_ENABLE_V8
#include "v8/include/libplatform/libplatform.h"
#endif
namespace {
#ifdef PDF_ENABLE_V8
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
// Returns the full path for an external V8 data file based on either
// the currect exectuable path or an explicit override.
std::string GetFullPathForSnapshotFile(const std::string& exe_path,
const std::string& bin_dir,
const std::string& filename) {
std::string result;
if (!bin_dir.empty()) {
result = bin_dir;
if (*bin_dir.rbegin() != PATH_SEPARATOR) {
result += PATH_SEPARATOR;
}
} else if (!exe_path.empty()) {
size_t last_separator = exe_path.rfind(PATH_SEPARATOR);
if (last_separator != std::string::npos) {
result = exe_path.substr(0, last_separator + 1);
}
}
result += filename;
return result;
}
bool GetExternalData(const std::string& exe_path,
const std::string& bin_dir,
const std::string& filename,
v8::StartupData* result_data) {
std::string full_path =
GetFullPathForSnapshotFile(exe_path, bin_dir, filename);
size_t data_length = 0;
char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
if (!data_buffer) {
return false;
}
result_data->data = const_cast<const char*>(data_buffer);
result_data->raw_size = data_length;
return true;
}
#endif // V8_USE_EXTERNAL_STARTUP_DATA
void InitializeV8Common(v8::Platform** platform) {
v8::V8::InitializeICU();
*platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(*platform);
v8::V8::Initialize();
// By enabling predictable mode, V8 won't post any background tasks.
const char predictable_flag[] = "--predictable";
v8::V8::SetFlagsFromString(predictable_flag,
static_cast<int>(strlen(predictable_flag)));
}
#endif // PDF_ENABLE_V8
} // namespace
char* GetFileContents(const char* filename, size_t* retlen) {
FILE* file = fopen(filename, "rb");
if (!file) {
fprintf(stderr, "Failed to open: %s\n", filename);
return nullptr;
}
(void)fseek(file, 0, SEEK_END);
size_t file_length = ftell(file);
if (!file_length) {
return nullptr;
}
(void)fseek(file, 0, SEEK_SET);
char* buffer = (char*)malloc(file_length);
if (!buffer) {
return nullptr;
}
size_t bytes_read = fread(buffer, 1, file_length, file);
(void)fclose(file);
if (bytes_read != file_length) {
fprintf(stderr, "Failed to read: %s\n", filename);
free(buffer);
return nullptr;
}
*retlen = bytes_read;
return buffer;
}
std::wstring GetPlatformWString(FPDF_WIDESTRING wstr) {
if (!wstr)
return nullptr;
size_t characters = 0;
while (wstr[characters])
++characters;
std::wstring platform_string(characters, L'\0');
for (size_t i = 0; i < characters + 1; ++i) {
const unsigned char* ptr = reinterpret_cast<const unsigned char*>(&wstr[i]);
platform_string[i] = ptr[0] + 256 * ptr[1];
}
return platform_string;
}
FPDF_WIDESTRING GetFPDFWideString(const std::wstring& wstr) {
size_t length = sizeof(uint16_t) * (wstr.length() + 1);
unsigned char* ptr = static_cast<unsigned char*>(malloc(length));
size_t i = 0;
for (wchar_t w : wstr) {
ptr[i++] = w & 0xff;
ptr[i++] = (w >> 8) & 0xff;
}
ptr[i++] = 0;
ptr[i] = 0;
return reinterpret_cast<FPDF_WIDESTRING>(ptr);
}
#ifdef PDF_ENABLE_V8
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
bool InitializeV8ForPDFium(const std::string& exe_path,
const std::string& bin_dir,
v8::StartupData* natives_blob,
v8::StartupData* snapshot_blob,
v8::Platform** platform) {
InitializeV8Common(platform);
if (!GetExternalData(exe_path, bin_dir, "natives_blob.bin", natives_blob))
return false;
if (!GetExternalData(exe_path, bin_dir, "snapshot_blob.bin", snapshot_blob))
return false;
v8::V8::SetNativesDataBlob(natives_blob);
v8::V8::SetSnapshotDataBlob(snapshot_blob);
return true;
}
#else // V8_USE_EXTERNAL_STARTUP_DATA
bool InitializeV8ForPDFium(v8::Platform** platform) {
InitializeV8Common(platform);
return true;
}
#endif // V8_USE_EXTERNAL_STARTUP_DATA
#endif // PDF_ENABLE_V8
TestLoader::TestLoader(const char* pBuf, size_t len)
: m_pBuf(pBuf), m_Len(len) {
}
// static
int TestLoader::GetBlock(void* param,
unsigned long pos,
unsigned char* pBuf,
unsigned long size) {
TestLoader* pLoader = static_cast<TestLoader*>(param);
if (pos + size < pos || pos + size > pLoader->m_Len)
return 0;
memcpy(pBuf, pLoader->m_pBuf + pos, size);
return 1;
}
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