blob: 39c3dd71fe3d5eb784594bb4df118fa0a19c02e8 [file] [log] [blame]
// Copyright (c) 2011 The Chromium 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 "chrome/utility/chrome_content_utility_client.h"
#include "base/base64.h"
#include "base/command_line.h"
#include "base/json/json_reader.h"
#include "base/threading/thread.h"
#include "chrome/browser/importer/external_process_importer_bridge.h"
#include "chrome/browser/importer/importer.h"
#include "chrome/browser/importer/profile_import_process_messages.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_utility_messages.h"
#include "chrome/common/extensions/extension_l10n_util.h"
#include "chrome/common/extensions/extension_unpacker.h"
#include "chrome/common/extensions/update_manifest.h"
#include "chrome/common/web_resource/web_resource_unpacker.h"
#include "content/utility/utility_thread.h"
#include "printing/backend/print_backend.h"
#include "printing/page_range.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/ui_base_switches.h"
#include "ui/gfx/rect.h"
#include "webkit/glue/image_decoder.h"
#if defined(OS_WIN)
#include "base/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/path_service.h"
#include "base/win/iat_patch_function.h"
#include "base/win/scoped_handle.h"
#include "content/common/child_process_messages.h"
#include "content/common/content_switches.h"
#include "content/common/sandbox_init_wrapper.h"
#include "printing/emf_win.h"
#endif // defined(OS_WIN)
namespace chrome {
ChromeContentUtilityClient::ChromeContentUtilityClient() : items_to_import_(0) {
}
ChromeContentUtilityClient::~ChromeContentUtilityClient() {
}
void ChromeContentUtilityClient::UtilityThreadStarted() {
#if defined(OS_WIN)
// Load the pdf plugin before the sandbox is turned on. This is for Windows
// only because we need this DLL only on Windows.
FilePath pdf;
if (PathService::Get(chrome::FILE_PDF_PLUGIN, &pdf) &&
file_util::PathExists(pdf)) {
bool rv = !!LoadLibrary(pdf.value().c_str());
DCHECK(rv) << "Couldn't load PDF plugin";
}
#endif
CommandLine* command_line = CommandLine::ForCurrentProcess();
std::string lang = command_line->GetSwitchValueASCII(switches::kLang);
if (!lang.empty())
extension_l10n_util::SetProcessLocale(lang);
}
bool ChromeContentUtilityClient::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ChromeContentUtilityClient, message)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_UnpackExtension, OnUnpackExtension)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_UnpackWebResource,
OnUnpackWebResource)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseUpdateManifest,
OnParseUpdateManifest)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_DecodeImage, OnDecodeImage)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_DecodeImageBase64, OnDecodeImageBase64)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafile,
OnRenderPDFPagesToMetafile)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseJSON, OnParseJSON)
IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterCapsAndDefaults,
OnGetPrinterCapsAndDefaults)
IPC_MESSAGE_HANDLER(ProfileImportProcessMsg_StartImport,
OnImportStart)
IPC_MESSAGE_HANDLER(ProfileImportProcessMsg_CancelImport,
OnImportCancel)
IPC_MESSAGE_HANDLER(ProfileImportProcessMsg_ReportImportItemFinished,
OnImportItemFinished)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
bool ChromeContentUtilityClient::Send(IPC::Message* message) {
return UtilityThread::current()->Send(message);
}
void ChromeContentUtilityClient::OnUnpackExtension(
const FilePath& extension_path) {
ExtensionUnpacker unpacker(extension_path);
if (unpacker.Run() && unpacker.DumpImagesToFile() &&
unpacker.DumpMessageCatalogsToFile()) {
Send(new ChromeUtilityHostMsg_UnpackExtension_Succeeded(
*unpacker.parsed_manifest()));
} else {
Send(new ChromeUtilityHostMsg_UnpackExtension_Failed(
unpacker.error_message()));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnUnpackWebResource(
const std::string& resource_data) {
// Parse json data.
// TODO(mrc): Add the possibility of a template that controls parsing, and
// the ability to download and verify images.
WebResourceUnpacker unpacker(resource_data);
if (unpacker.Run()) {
Send(new ChromeUtilityHostMsg_UnpackWebResource_Succeeded(
*unpacker.parsed_json()));
} else {
Send(new ChromeUtilityHostMsg_UnpackWebResource_Failed(
unpacker.error_message()));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnParseUpdateManifest(const std::string& xml) {
UpdateManifest manifest;
if (!manifest.Parse(xml)) {
Send(new ChromeUtilityHostMsg_ParseUpdateManifest_Failed(
manifest.errors()));
} else {
Send(new ChromeUtilityHostMsg_ParseUpdateManifest_Succeeded(
manifest.results()));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnDecodeImage(
const std::vector<unsigned char>& encoded_data) {
webkit_glue::ImageDecoder decoder;
const SkBitmap& decoded_image = decoder.Decode(&encoded_data[0],
encoded_data.size());
if (decoded_image.empty()) {
Send(new ChromeUtilityHostMsg_DecodeImage_Failed());
} else {
Send(new ChromeUtilityHostMsg_DecodeImage_Succeeded(decoded_image));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnDecodeImageBase64(
const std::string& encoded_string) {
std::string decoded_string;
if (!base::Base64Decode(encoded_string, &decoded_string)) {
Send(new ChromeUtilityHostMsg_DecodeImage_Failed());
return;
}
std::vector<unsigned char> decoded_vector(decoded_string.size());
for (size_t i = 0; i < decoded_string.size(); ++i) {
decoded_vector[i] = static_cast<unsigned char>(decoded_string[i]);
}
OnDecodeImage(decoded_vector);
}
void ChromeContentUtilityClient::OnRenderPDFPagesToMetafile(
base::PlatformFile pdf_file,
const FilePath& metafile_path,
const printing::PdfRenderSettings& pdf_render_settings,
const std::vector<printing::PageRange>& page_ranges) {
bool succeeded = false;
#if defined(OS_WIN)
int highest_rendered_page_number = 0;
succeeded = RenderPDFToWinMetafile(pdf_file,
metafile_path,
pdf_render_settings.area(),
pdf_render_settings.dpi(),
pdf_render_settings.autorotate(),
page_ranges,
&highest_rendered_page_number);
if (succeeded) {
Send(new ChromeUtilityHostMsg_RenderPDFPagesToMetafile_Succeeded(
highest_rendered_page_number));
}
#endif // defined(OS_WIN)
if (!succeeded) {
Send(new ChromeUtilityHostMsg_RenderPDFPagesToMetafile_Failed());
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
#if defined(OS_WIN)
// Exported by pdf.dll
typedef bool (*RenderPDFPageToDCProc)(
const unsigned char* pdf_buffer, int buffer_size, int page_number, HDC dc,
int dpi_x, int dpi_y, int bounds_origin_x, int bounds_origin_y,
int bounds_width, int bounds_height, bool fit_to_bounds,
bool stretch_to_bounds, bool keep_aspect_ratio, bool center_in_bounds,
bool autorotate);
typedef bool (*GetPDFDocInfoProc)(const unsigned char* pdf_buffer,
int buffer_size, int* page_count,
double* max_page_width);
// The 2 below IAT patch functions are almost identical to the code in
// render_process_impl.cc. This is needed to work around specific Windows APIs
// used by the Chrome PDF plugin that will fail in the sandbox.
static base::win::IATPatchFunction g_iat_patch_createdca;
HDC WINAPI UtilityProcess_CreateDCAPatch(LPCSTR driver_name,
LPCSTR device_name,
LPCSTR output,
const DEVMODEA* init_data) {
if (driver_name &&
(std::string("DISPLAY") == std::string(driver_name)))
// CreateDC fails behind the sandbox, but not CreateCompatibleDC.
return CreateCompatibleDC(NULL);
NOTREACHED();
return CreateDCA(driver_name, device_name, output, init_data);
}
static base::win::IATPatchFunction g_iat_patch_get_font_data;
DWORD WINAPI UtilityProcess_GetFontDataPatch(
HDC hdc, DWORD table, DWORD offset, LPVOID buffer, DWORD length) {
int rv = GetFontData(hdc, table, offset, buffer, length);
if (rv == GDI_ERROR && hdc) {
HFONT font = static_cast<HFONT>(GetCurrentObject(hdc, OBJ_FONT));
LOGFONT logfont;
if (GetObject(font, sizeof(LOGFONT), &logfont)) {
std::vector<char> font_data;
if (UtilityThread::current()->Send(
new ChildProcessHostMsg_PreCacheFont(logfont))) {
rv = GetFontData(hdc, table, offset, buffer, length);
UtilityThread::current()->Send(
new ChildProcessHostMsg_ReleaseCachedFonts());
}
}
}
return rv;
}
bool ChromeContentUtilityClient::RenderPDFToWinMetafile(
base::PlatformFile pdf_file,
const FilePath& metafile_path,
const gfx::Rect& render_area,
int render_dpi,
bool autorotate,
const std::vector<printing::PageRange>& page_ranges,
int* highest_rendered_page_number) {
*highest_rendered_page_number = -1;
base::win::ScopedHandle file(pdf_file);
FilePath pdf_module_path;
PathService::Get(chrome::FILE_PDF_PLUGIN, &pdf_module_path);
HMODULE pdf_module = GetModuleHandle(pdf_module_path.value().c_str());
if (!pdf_module)
return false;
RenderPDFPageToDCProc render_proc =
reinterpret_cast<RenderPDFPageToDCProc>(
GetProcAddress(pdf_module, "RenderPDFPageToDC"));
if (!render_proc)
return false;
GetPDFDocInfoProc get_info_proc = reinterpret_cast<GetPDFDocInfoProc>(
GetProcAddress(pdf_module, "GetPDFDocInfo"));
if (!get_info_proc)
return false;
// Patch the IAT for handling specific APIs known to fail in the sandbox.
if (!g_iat_patch_createdca.is_patched())
g_iat_patch_createdca.Patch(pdf_module_path.value().c_str(),
"gdi32.dll", "CreateDCA",
UtilityProcess_CreateDCAPatch);
if (!g_iat_patch_get_font_data.is_patched())
g_iat_patch_get_font_data.Patch(pdf_module_path.value().c_str(),
"gdi32.dll", "GetFontData",
UtilityProcess_GetFontDataPatch);
// TODO(sanjeevr): Add a method to the PDF DLL that takes in a file handle
// and a page range array. That way we don't need to read the entire PDF into
// memory.
DWORD length = ::GetFileSize(file, NULL);
if (length == INVALID_FILE_SIZE)
return false;
std::vector<uint8> buffer;
buffer.resize(length);
DWORD bytes_read = 0;
if (!ReadFile(pdf_file, &buffer.front(), length, &bytes_read, NULL) ||
(bytes_read != length))
return false;
int total_page_count = 0;
if (!get_info_proc(&buffer.front(), buffer.size(), &total_page_count, NULL))
return false;
printing::Emf metafile;
metafile.InitToFile(metafile_path);
// Since we created the metafile using the screen DPI (but we actually want
// the PDF DLL to print using the passed in render_dpi, we apply the following
// transformation.
SetGraphicsMode(metafile.context(), GM_ADVANCED);
XFORM xform = {0};
int screen_dpi = GetDeviceCaps(GetDC(NULL), LOGPIXELSX);
xform.eM11 = xform.eM22 =
static_cast<float>(screen_dpi) / static_cast<float>(render_dpi);
ModifyWorldTransform(metafile.context(), &xform, MWT_LEFTMULTIPLY);
bool ret = false;
std::vector<printing::PageRange>::const_iterator iter;
for (iter = page_ranges.begin(); iter != page_ranges.end(); ++iter) {
for (int page_number = iter->from; page_number <= iter->to; ++page_number) {
if (page_number >= total_page_count)
break;
// The underlying metafile is of type Emf and ignores the arguments passed
// to StartPage.
metafile.StartPage(gfx::Size(), gfx::Rect(), 1);
if (render_proc(&buffer.front(), buffer.size(), page_number,
metafile.context(), render_dpi, render_dpi,
render_area.x(), render_area.y(), render_area.width(),
render_area.height(), true, false, true, true,
autorotate))
if (*highest_rendered_page_number < page_number)
*highest_rendered_page_number = page_number;
ret = true;
metafile.FinishPage();
}
}
metafile.FinishDocument();
return ret;
}
#endif // defined(OS_WIN)
void ChromeContentUtilityClient::OnParseJSON(const std::string& json) {
int error_code;
std::string error;
Value* value =
base::JSONReader::ReadAndReturnError(json, false, &error_code, &error);
if (value) {
ListValue wrapper;
wrapper.Append(value);
Send(new ChromeUtilityHostMsg_ParseJSON_Succeeded(wrapper));
} else {
Send(new ChromeUtilityHostMsg_ParseJSON_Failed(error));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnGetPrinterCapsAndDefaults(
const std::string& printer_name) {
scoped_refptr<printing::PrintBackend> print_backend =
printing::PrintBackend::CreateInstance(NULL);
printing::PrinterCapsAndDefaults printer_info;
if (print_backend->GetPrinterCapsAndDefaults(printer_name, &printer_info)) {
Send(new ChromeUtilityHostMsg_GetPrinterCapsAndDefaults_Succeeded(
printer_name, printer_info));
} else {
Send(new ChromeUtilityHostMsg_GetPrinterCapsAndDefaults_Failed(
printer_name));
}
UtilityThread::current()->ReleaseProcessIfNeeded();
}
void ChromeContentUtilityClient::OnImportStart(
const importer::SourceProfile& source_profile,
uint16 items,
const DictionaryValue& localized_strings) {
bridge_ = new ExternalProcessImporterBridge(localized_strings);
importer_ = importer::CreateImporterByType(source_profile.importer_type);
if (!importer_) {
Send(new ProfileImportProcessHostMsg_Import_Finished(false,
"Importer could not be created."));
return;
}
items_to_import_ = items;
// Create worker thread in which importer runs.
import_thread_.reset(new base::Thread("import_thread"));
base::Thread::Options options;
options.message_loop_type = MessageLoop::TYPE_IO;
if (!import_thread_->StartWithOptions(options)) {
NOTREACHED();
ImporterCleanup();
}
import_thread_->message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(importer_.get(),
&Importer::StartImport,
source_profile,
items,
bridge_));
}
void ChromeContentUtilityClient::OnImportCancel() {
ImporterCleanup();
}
void ChromeContentUtilityClient::OnImportItemFinished(uint16 item) {
items_to_import_ ^= item; // Remove finished item from mask.
// If we've finished with all items, notify the browser process.
if (items_to_import_ == 0) {
Send(new ProfileImportProcessHostMsg_Import_Finished(true, ""));
ImporterCleanup();
}
}
void ChromeContentUtilityClient::ImporterCleanup() {
importer_->Cancel();
importer_ = NULL;
bridge_ = NULL;
import_thread_.reset();
UtilityThread::current()->ReleaseProcessIfNeeded();
}
} // namespace chrome