| // Copyright 2014 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/printing_handler.h" |
| |
| #include "base/files/file_util.h" |
| #include "base/lazy_instance.h" |
| #include "base/path_service.h" |
| #include "base/scoped_native_library.h" |
| #include "chrome/common/chrome_paths.h" |
| #include "chrome/common/chrome_utility_printing_messages.h" |
| #include "chrome/utility/cloud_print/bitmap_image.h" |
| #include "chrome/utility/cloud_print/pwg_encoder.h" |
| #include "content/public/utility/utility_thread.h" |
| #include "printing/page_range.h" |
| #include "printing/pdf_render_settings.h" |
| |
| #if defined(OS_WIN) |
| #include "base/win/iat_patch_function.h" |
| #include "printing/emf_win.h" |
| #include "ui/gfx/gdi_util.h" |
| #endif |
| |
| #if defined(ENABLE_PRINT_PREVIEW) |
| #include "chrome/common/crash_keys.h" |
| #include "printing/backend/print_backend.h" |
| #endif |
| |
| namespace { |
| |
| bool Send(IPC::Message* message) { |
| return content::UtilityThread::Get()->Send(message); |
| } |
| |
| void ReleaseProcessIfNeeded() { |
| content::UtilityThread::Get()->ReleaseProcessIfNeeded(); |
| } |
| |
| class PdfFunctionsBase { |
| public: |
| PdfFunctionsBase() : render_pdf_to_bitmap_func_(NULL), |
| get_pdf_doc_info_func_(NULL) {} |
| |
| bool Init() { |
| base::FilePath pdf_module_path; |
| if (!PathService::Get(chrome::FILE_PDF_PLUGIN, &pdf_module_path) || |
| !base::PathExists(pdf_module_path)) { |
| return false; |
| } |
| |
| pdf_lib_.Reset(base::LoadNativeLibrary(pdf_module_path, NULL)); |
| if (!pdf_lib_.is_valid()) { |
| LOG(WARNING) << "Couldn't load PDF plugin"; |
| return false; |
| } |
| |
| render_pdf_to_bitmap_func_ = |
| reinterpret_cast<RenderPDFPageToBitmapProc>( |
| pdf_lib_.GetFunctionPointer("RenderPDFPageToBitmap")); |
| LOG_IF(WARNING, !render_pdf_to_bitmap_func_) << |
| "Missing RenderPDFPageToBitmap"; |
| |
| get_pdf_doc_info_func_ = |
| reinterpret_cast<GetPDFDocInfoProc>( |
| pdf_lib_.GetFunctionPointer("GetPDFDocInfo")); |
| LOG_IF(WARNING, !get_pdf_doc_info_func_) << "Missing GetPDFDocInfo"; |
| |
| if (!render_pdf_to_bitmap_func_ || !get_pdf_doc_info_func_ || |
| !PlatformInit(pdf_module_path, pdf_lib_)) { |
| Reset(); |
| } |
| |
| return IsValid(); |
| } |
| |
| bool IsValid() const { |
| return pdf_lib_.is_valid(); |
| } |
| |
| void Reset() { |
| pdf_lib_.Reset(NULL); |
| } |
| |
| bool RenderPDFPageToBitmap(const void* pdf_buffer, |
| int pdf_buffer_size, |
| int page_number, |
| void* bitmap_buffer, |
| int bitmap_width, |
| int bitmap_height, |
| int dpi_x, |
| int dpi_y, |
| bool autorotate) { |
| if (!render_pdf_to_bitmap_func_) |
| return false; |
| return render_pdf_to_bitmap_func_(pdf_buffer, pdf_buffer_size, page_number, |
| bitmap_buffer, bitmap_width, |
| bitmap_height, dpi_x, dpi_y, autorotate); |
| } |
| |
| bool GetPDFDocInfo(const void* pdf_buffer, |
| int buffer_size, |
| int* page_count, |
| double* max_page_width) { |
| if (!get_pdf_doc_info_func_) |
| return false; |
| return get_pdf_doc_info_func_(pdf_buffer, buffer_size, page_count, |
| max_page_width); |
| } |
| |
| protected: |
| virtual bool PlatformInit( |
| const base::FilePath& pdf_module_path, |
| const base::ScopedNativeLibrary& pdf_lib) { |
| return true; |
| } |
| |
| private: |
| // Exported by PDF plugin. |
| typedef bool (*RenderPDFPageToBitmapProc)(const void* pdf_buffer, |
| int pdf_buffer_size, |
| int page_number, |
| void* bitmap_buffer, |
| int bitmap_width, |
| int bitmap_height, |
| int dpi_x, |
| int dpi_y, |
| bool autorotate); |
| typedef bool (*GetPDFDocInfoProc)(const void* pdf_buffer, |
| int buffer_size, int* page_count, |
| double* max_page_width); |
| |
| RenderPDFPageToBitmapProc render_pdf_to_bitmap_func_; |
| GetPDFDocInfoProc get_pdf_doc_info_func_; |
| |
| base::ScopedNativeLibrary pdf_lib_; |
| DISALLOW_COPY_AND_ASSIGN(PdfFunctionsBase); |
| }; |
| |
| #if defined(OS_WIN) |
| // 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") == 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)) { |
| content::UtilityThread::Get()->PreCacheFont(logfont); |
| rv = GetFontData(hdc, table, offset, buffer, length); |
| content::UtilityThread::Get()->ReleaseCachedFonts(); |
| } |
| } |
| return rv; |
| } |
| |
| class PdfFunctionsWin : public PdfFunctionsBase { |
| public: |
| PdfFunctionsWin() : render_pdf_to_dc_func_(NULL) { |
| } |
| |
| bool PlatformInit( |
| const base::FilePath& pdf_module_path, |
| const base::ScopedNativeLibrary& pdf_lib) override { |
| // 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); |
| } |
| render_pdf_to_dc_func_ = |
| reinterpret_cast<RenderPDFPageToDCProc>( |
| pdf_lib.GetFunctionPointer("RenderPDFPageToDC")); |
| LOG_IF(WARNING, !render_pdf_to_dc_func_) << "Missing RenderPDFPageToDC"; |
| |
| return render_pdf_to_dc_func_ != NULL; |
| } |
| |
| bool RenderPDFPageToDC(const void* 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) { |
| if (!render_pdf_to_dc_func_) |
| return false; |
| return render_pdf_to_dc_func_(pdf_buffer, buffer_size, page_number, |
| dc, dpi_x, dpi_y, bounds_origin_x, |
| bounds_origin_y, bounds_width, bounds_height, |
| fit_to_bounds, stretch_to_bounds, |
| keep_aspect_ratio, center_in_bounds, |
| autorotate); |
| } |
| |
| private: |
| // Exported by PDF plugin. |
| typedef bool (*RenderPDFPageToDCProc)( |
| const void* 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); |
| RenderPDFPageToDCProc render_pdf_to_dc_func_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PdfFunctionsWin); |
| }; |
| |
| typedef PdfFunctionsWin PdfFunctions; |
| #else // OS_WIN |
| typedef PdfFunctionsBase PdfFunctions; |
| #endif // OS_WIN |
| |
| base::LazyInstance<PdfFunctions> g_pdf_lib = LAZY_INSTANCE_INITIALIZER; |
| |
| } // namespace |
| |
| PrintingHandler::PrintingHandler() {} |
| |
| PrintingHandler::~PrintingHandler() {} |
| |
| // static |
| void PrintingHandler::PreSandboxStartup() { |
| g_pdf_lib.Get().Init(); |
| } |
| |
| bool PrintingHandler::OnMessageReceived(const IPC::Message& message) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP(PrintingHandler, message) |
| #if defined(OS_WIN) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles, |
| OnRenderPDFPagesToMetafile) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles_GetPage, |
| OnRenderPDFPagesToMetafileGetPage) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToMetafiles_Stop, |
| OnRenderPDFPagesToMetafileStop) |
| #endif // OS_WIN |
| #if defined(ENABLE_PRINT_PREVIEW) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_RenderPDFPagesToPWGRaster, |
| OnRenderPDFPagesToPWGRaster) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterCapsAndDefaults, |
| OnGetPrinterCapsAndDefaults) |
| IPC_MESSAGE_HANDLER(ChromeUtilityMsg_GetPrinterSemanticCapsAndDefaults, |
| OnGetPrinterSemanticCapsAndDefaults) |
| #endif // ENABLE_PRINT_PREVIEW |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP() |
| return handled; |
| } |
| |
| #if defined(OS_WIN) |
| void PrintingHandler::OnRenderPDFPagesToMetafile( |
| IPC::PlatformFileForTransit pdf_transit, |
| const printing::PdfRenderSettings& settings) { |
| pdf_rendering_settings_ = settings; |
| base::File pdf_file = IPC::PlatformFileForTransitToFile(pdf_transit); |
| int page_count = LoadPDF(pdf_file.Pass()); |
| Send( |
| new ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageCount(page_count)); |
| } |
| |
| void PrintingHandler::OnRenderPDFPagesToMetafileGetPage( |
| int page_number, |
| IPC::PlatformFileForTransit output_file) { |
| base::File emf_file = IPC::PlatformFileForTransitToFile(output_file); |
| float scale_factor = 1.0f; |
| bool success = |
| RenderPdfPageToMetafile(page_number, emf_file.Pass(), &scale_factor); |
| Send(new ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageDone( |
| success, scale_factor)); |
| } |
| |
| void PrintingHandler::OnRenderPDFPagesToMetafileStop() { |
| ReleaseProcessIfNeeded(); |
| } |
| |
| #endif // OS_WIN |
| |
| #if defined(ENABLE_PRINT_PREVIEW) |
| void PrintingHandler::OnRenderPDFPagesToPWGRaster( |
| IPC::PlatformFileForTransit pdf_transit, |
| const printing::PdfRenderSettings& settings, |
| const printing::PwgRasterSettings& bitmap_settings, |
| IPC::PlatformFileForTransit bitmap_transit) { |
| base::File pdf = IPC::PlatformFileForTransitToFile(pdf_transit); |
| base::File bitmap = IPC::PlatformFileForTransitToFile(bitmap_transit); |
| if (RenderPDFPagesToPWGRaster(pdf.Pass(), settings, bitmap_settings, |
| bitmap.Pass())) { |
| Send(new ChromeUtilityHostMsg_RenderPDFPagesToPWGRaster_Succeeded()); |
| } else { |
| Send(new ChromeUtilityHostMsg_RenderPDFPagesToPWGRaster_Failed()); |
| } |
| ReleaseProcessIfNeeded(); |
| } |
| #endif // ENABLE_PRINT_PREVIEW |
| |
| #if defined(OS_WIN) |
| int PrintingHandler::LoadPDF(base::File pdf_file) { |
| if (!g_pdf_lib.Get().IsValid()) |
| return 0; |
| |
| int64 length64 = pdf_file.GetLength(); |
| if (length64 <= 0 || length64 > std::numeric_limits<int>::max()) |
| return 0; |
| int length = static_cast<int>(length64); |
| |
| pdf_data_.resize(length); |
| if (length != pdf_file.Read(0, pdf_data_.data(), pdf_data_.size())) |
| return 0; |
| |
| int total_page_count = 0; |
| if (!g_pdf_lib.Get().GetPDFDocInfo( |
| &pdf_data_.front(), pdf_data_.size(), &total_page_count, NULL)) { |
| return 0; |
| } |
| return total_page_count; |
| } |
| |
| bool PrintingHandler::RenderPdfPageToMetafile(int page_number, |
| base::File output_file, |
| float* scale_factor) { |
| printing::Emf metafile; |
| metafile.Init(); |
| |
| // We need to scale down DC to fit an entire page into DC available area. |
| // Current metafile is based on screen DC and have current screen size. |
| // Writing outside of those boundaries will result in the cut-off output. |
| // On metafiles (this is the case here), scaling down will still record |
| // original coordinates and we'll be able to print in full resolution. |
| // Before playback we'll need to counter the scaling up that will happen |
| // in the service (print_system_win.cc). |
| *scale_factor = |
| gfx::CalculatePageScale(metafile.context(), |
| pdf_rendering_settings_.area().right(), |
| pdf_rendering_settings_.area().bottom()); |
| gfx::ScaleDC(metafile.context(), *scale_factor); |
| |
| // The underlying metafile is of type Emf and ignores the arguments passed |
| // to StartPage. |
| metafile.StartPage(gfx::Size(), gfx::Rect(), 1); |
| if (!g_pdf_lib.Get().RenderPDFPageToDC( |
| &pdf_data_.front(), |
| pdf_data_.size(), |
| page_number, |
| metafile.context(), |
| pdf_rendering_settings_.dpi(), |
| pdf_rendering_settings_.dpi(), |
| pdf_rendering_settings_.area().x(), |
| pdf_rendering_settings_.area().y(), |
| pdf_rendering_settings_.area().width(), |
| pdf_rendering_settings_.area().height(), |
| true, |
| false, |
| true, |
| true, |
| pdf_rendering_settings_.autorotate())) { |
| return false; |
| } |
| metafile.FinishPage(); |
| metafile.FinishDocument(); |
| return metafile.SaveTo(&output_file); |
| } |
| |
| #endif // OS_WIN |
| |
| #if defined(ENABLE_PRINT_PREVIEW) |
| bool PrintingHandler::RenderPDFPagesToPWGRaster( |
| base::File pdf_file, |
| const printing::PdfRenderSettings& settings, |
| const printing::PwgRasterSettings& bitmap_settings, |
| base::File bitmap_file) { |
| bool autoupdate = true; |
| if (!g_pdf_lib.Get().IsValid()) |
| return false; |
| |
| base::File::Info info; |
| if (!pdf_file.GetInfo(&info) || info.size <= 0 || |
| info.size > std::numeric_limits<int>::max()) |
| return false; |
| int data_size = static_cast<int>(info.size); |
| |
| std::string data(data_size, 0); |
| if (pdf_file.Read(0, &data[0], data_size) != data_size) |
| return false; |
| |
| int total_page_count = 0; |
| if (!g_pdf_lib.Get().GetPDFDocInfo(data.data(), data_size, |
| &total_page_count, NULL)) { |
| return false; |
| } |
| |
| cloud_print::PwgEncoder encoder; |
| std::string pwg_header; |
| encoder.EncodeDocumentHeader(&pwg_header); |
| int bytes_written = bitmap_file.WriteAtCurrentPos(pwg_header.data(), |
| pwg_header.size()); |
| if (bytes_written != static_cast<int>(pwg_header.size())) |
| return false; |
| |
| cloud_print::BitmapImage image(settings.area().size(), |
| cloud_print::BitmapImage::BGRA); |
| for (int i = 0; i < total_page_count; ++i) { |
| int page_number = i; |
| |
| if (bitmap_settings.reverse_page_order) { |
| page_number = total_page_count - 1 - page_number; |
| } |
| |
| if (!g_pdf_lib.Get().RenderPDFPageToBitmap(data.data(), |
| data_size, |
| page_number, |
| image.pixel_data(), |
| image.size().width(), |
| image.size().height(), |
| settings.dpi(), |
| settings.dpi(), |
| autoupdate)) { |
| return false; |
| } |
| |
| cloud_print::PwgHeaderInfo header_info; |
| header_info.dpi = settings.dpi(); |
| header_info.total_pages = total_page_count; |
| |
| // Transform odd pages. |
| if (page_number % 2) { |
| switch (bitmap_settings.odd_page_transform) { |
| case printing::TRANSFORM_NORMAL: |
| break; |
| case printing::TRANSFORM_ROTATE_180: |
| header_info.flipx = true; |
| header_info.flipy = true; |
| break; |
| case printing::TRANSFORM_FLIP_HORIZONTAL: |
| header_info.flipx = true; |
| break; |
| case printing::TRANSFORM_FLIP_VERTICAL: |
| header_info.flipy = true; |
| break; |
| } |
| } |
| |
| if (bitmap_settings.rotate_all_pages) { |
| header_info.flipx = !header_info.flipx; |
| header_info.flipy = !header_info.flipy; |
| } |
| |
| std::string pwg_page; |
| if (!encoder.EncodePage(image, header_info, &pwg_page)) |
| return false; |
| bytes_written = bitmap_file.WriteAtCurrentPos(pwg_page.data(), |
| pwg_page.size()); |
| if (bytes_written != static_cast<int>(pwg_page.size())) |
| return false; |
| } |
| return true; |
| } |
| |
| void PrintingHandler::OnGetPrinterCapsAndDefaults( |
| const std::string& printer_name) { |
| scoped_refptr<printing::PrintBackend> print_backend = |
| printing::PrintBackend::CreateInstance(NULL); |
| printing::PrinterCapsAndDefaults printer_info; |
| |
| crash_keys::ScopedPrinterInfo crash_key( |
| print_backend->GetPrinterDriverInfo(printer_name)); |
| |
| 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)); |
| } |
| ReleaseProcessIfNeeded(); |
| } |
| |
| void PrintingHandler::OnGetPrinterSemanticCapsAndDefaults( |
| const std::string& printer_name) { |
| scoped_refptr<printing::PrintBackend> print_backend = |
| printing::PrintBackend::CreateInstance(NULL); |
| printing::PrinterSemanticCapsAndDefaults printer_info; |
| |
| crash_keys::ScopedPrinterInfo crash_key( |
| print_backend->GetPrinterDriverInfo(printer_name)); |
| |
| if (print_backend->GetPrinterSemanticCapsAndDefaults(printer_name, |
| &printer_info)) { |
| Send(new ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Succeeded( |
| printer_name, printer_info)); |
| } else { |
| Send(new ChromeUtilityHostMsg_GetPrinterSemanticCapsAndDefaults_Failed( |
| printer_name)); |
| } |
| ReleaseProcessIfNeeded(); |
| } |
| #endif // ENABLE_PRINT_PREVIEW |
