| // Copyright (c) 2012 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 "components/pdf/renderer/ppb_pdf_impl.h" |
| |
| #include "base/files/scoped_file.h" |
| #include "base/lazy_instance.h" |
| #include "base/metrics/histogram.h" |
| #include "base/numerics/safe_conversions.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/threading/thread_local.h" |
| #include "build/build_config.h" |
| #include "components/pdf/common/pdf_messages.h" |
| #include "components/pdf/renderer/pdf_resource_util.h" |
| #include "content/public/common/child_process_sandbox_support_linux.h" |
| #include "content/public/common/referrer.h" |
| #include "content/public/renderer/pepper_plugin_instance.h" |
| #include "content/public/renderer/render_thread.h" |
| #include "content/public/renderer/render_view.h" |
| #include "gin/v8_initializer.h" |
| #include "ppapi/c/pp_resource.h" |
| #include "ppapi/c/private/ppb_pdf.h" |
| #include "ppapi/c/trusted/ppb_browser_font_trusted.h" |
| #include "ppapi/shared_impl/ppapi_globals.h" |
| #include "ppapi/shared_impl/resource.h" |
| #include "ppapi/shared_impl/resource_tracker.h" |
| #include "ppapi/shared_impl/var.h" |
| #include "third_party/WebKit/public/web/WebDocument.h" |
| #include "third_party/WebKit/public/web/WebElement.h" |
| #include "third_party/WebKit/public/web/WebLocalFrame.h" |
| #include "third_party/WebKit/public/web/WebPluginContainer.h" |
| #include "third_party/WebKit/public/web/WebView.h" |
| #include "third_party/icu/source/i18n/unicode/usearch.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| |
| namespace pdf { |
| namespace { |
| |
| // --single-process model may fail in CHECK(!g_print_client) if there exist |
| // more than two RenderThreads, so here we use TLS for g_print_client. |
| // See http://crbug.com/457580. |
| base::LazyInstance<base::ThreadLocalPointer<PPB_PDF_Impl::PrintClient> >::Leaky |
| g_print_client_tls = LAZY_INSTANCE_INITIALIZER; |
| |
| #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
| class PrivateFontFile : public ppapi::Resource { |
| public: |
| PrivateFontFile(PP_Instance instance, int fd) |
| : Resource(ppapi::OBJECT_IS_IMPL, instance), fd_(fd) {} |
| |
| bool GetFontTable(uint32_t table, void* output, uint32_t* output_length) { |
| size_t temp_size = static_cast<size_t>(*output_length); |
| bool rv = content::GetFontTable(fd_.get(), |
| table, |
| 0 /* offset */, |
| static_cast<uint8_t*>(output), |
| &temp_size); |
| *output_length = base::checked_cast<uint32_t>(temp_size); |
| return rv; |
| } |
| |
| protected: |
| virtual ~PrivateFontFile() {} |
| |
| private: |
| base::ScopedFD fd_; |
| }; |
| #endif |
| |
| PP_Var GetLocalizedString(PP_Instance instance_id, |
| PP_ResourceString string_id) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return PP_MakeUndefined(); |
| |
| std::string rv = GetStringResource(string_id); |
| return ppapi::StringVar::StringToPPVar(rv); |
| } |
| |
| PP_Resource GetFontFileWithFallback( |
| PP_Instance instance_id, |
| const PP_BrowserFont_Trusted_Description* description, |
| PP_PrivateFontCharset charset) { |
| #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
| // Validate the instance before using it below. |
| if (!content::PepperPluginInstance::Get(instance_id)) |
| return 0; |
| |
| scoped_refptr<ppapi::StringVar> face_name( |
| ppapi::StringVar::FromPPVar(description->face)); |
| if (!face_name.get()) |
| return 0; |
| |
| int fd = content::MatchFontWithFallback( |
| face_name->value().c_str(), |
| description->weight >= PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD, |
| description->italic, |
| charset, |
| description->family); |
| if (fd == -1) |
| return 0; |
| |
| scoped_refptr<PrivateFontFile> font(new PrivateFontFile(instance_id, fd)); |
| |
| return font->GetReference(); |
| #else |
| // For trusted PPAPI plugins, this is only needed in Linux since font loading |
| // on Windows and Mac works through the renderer sandbox. |
| return 0; |
| #endif |
| } |
| |
| bool GetFontTableForPrivateFontFile(PP_Resource font_file, |
| uint32_t table, |
| void* output, |
| uint32_t* output_length) { |
| #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) |
| ppapi::Resource* resource = |
| ppapi::PpapiGlobals::Get()->GetResourceTracker()->GetResource(font_file); |
| if (!resource) |
| return false; |
| |
| PrivateFontFile* font = static_cast<PrivateFontFile*>(resource); |
| return font->GetFontTable(table, output, output_length); |
| #else |
| return false; |
| #endif |
| } |
| |
| void SearchString(PP_Instance instance, |
| const unsigned short* input_string, |
| const unsigned short* input_term, |
| bool case_sensitive, |
| PP_PrivateFindResult** results, |
| int* count) { |
| const base::char16* string = |
| reinterpret_cast<const base::char16*>(input_string); |
| const base::char16* term = reinterpret_cast<const base::char16*>(input_term); |
| |
| UErrorCode status = U_ZERO_ERROR; |
| UStringSearch* searcher = |
| usearch_open(term, |
| -1, |
| string, |
| -1, |
| content::RenderThread::Get()->GetLocale().c_str(), |
| 0, |
| &status); |
| DCHECK(status == U_ZERO_ERROR || status == U_USING_FALLBACK_WARNING || |
| status == U_USING_DEFAULT_WARNING); |
| UCollationStrength strength = case_sensitive ? UCOL_TERTIARY : UCOL_PRIMARY; |
| |
| UCollator* collator = usearch_getCollator(searcher); |
| if (ucol_getStrength(collator) != strength) { |
| ucol_setStrength(collator, strength); |
| usearch_reset(searcher); |
| } |
| |
| status = U_ZERO_ERROR; |
| int match_start = usearch_first(searcher, &status); |
| DCHECK(status == U_ZERO_ERROR); |
| |
| std::vector<PP_PrivateFindResult> pp_results; |
| while (match_start != USEARCH_DONE) { |
| size_t matched_length = usearch_getMatchedLength(searcher); |
| PP_PrivateFindResult result; |
| result.start_index = match_start; |
| result.length = matched_length; |
| pp_results.push_back(result); |
| match_start = usearch_next(searcher, &status); |
| DCHECK(status == U_ZERO_ERROR); |
| } |
| |
| *count = pp_results.size(); |
| if (*count) { |
| *results = reinterpret_cast<PP_PrivateFindResult*>( |
| malloc(*count * sizeof(PP_PrivateFindResult))); |
| memcpy(*results, &pp_results[0], *count * sizeof(PP_PrivateFindResult)); |
| } else { |
| *results = NULL; |
| } |
| |
| usearch_close(searcher); |
| } |
| |
| void DidStartLoading(PP_Instance instance_id) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| instance->GetRenderView()->DidStartLoading(); |
| } |
| |
| void DidStopLoading(PP_Instance instance_id) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| instance->GetRenderView()->DidStopLoading(); |
| } |
| |
| void SetContentRestriction(PP_Instance instance_id, int restrictions) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| instance->GetRenderView()->Send(new PDFHostMsg_PDFUpdateContentRestrictions( |
| instance->GetRenderView()->GetRoutingID(), restrictions)); |
| } |
| |
| void HistogramPDFPageCount(PP_Instance instance, int count) { |
| UMA_HISTOGRAM_COUNTS_10000("PDF.PageCount", count); |
| } |
| |
| void UserMetricsRecordAction(PP_Instance instance, PP_Var action) { |
| scoped_refptr<ppapi::StringVar> action_str( |
| ppapi::StringVar::FromPPVar(action)); |
| if (action_str.get()) |
| content::RenderThread::Get()->RecordComputedAction(action_str->value()); |
| } |
| |
| void HasUnsupportedFeature(PP_Instance instance_id) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| |
| // Only want to show an info bar if the pdf is the whole tab. |
| if (!instance->IsFullPagePlugin()) |
| return; |
| |
| blink::WebView* view = |
| instance->GetContainer()->element().document().frame()->view(); |
| content::RenderView* render_view = content::RenderView::FromWebView(view); |
| render_view->Send( |
| new PDFHostMsg_PDFHasUnsupportedFeature(render_view->GetRoutingID())); |
| } |
| |
| void SaveAs(PP_Instance instance_id) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| GURL url = instance->GetPluginURL(); |
| |
| content::RenderView* render_view = instance->GetRenderView(); |
| blink::WebLocalFrame* frame = |
| render_view->GetWebView()->mainFrame()->toWebLocalFrame(); |
| content::Referrer referrer = content::Referrer::SanitizeForRequest( |
| url, content::Referrer(frame->document().url(), |
| frame->document().referrerPolicy())); |
| render_view->Send( |
| new PDFHostMsg_PDFSaveURLAs(render_view->GetRoutingID(), url, referrer)); |
| } |
| |
| void Print(PP_Instance instance) { |
| PPB_PDF_Impl::InvokePrintingForInstance(instance); |
| } |
| |
| PP_Bool IsFeatureEnabled(PP_Instance instance, PP_PDFFeature feature) { |
| switch (feature) { |
| case PP_PDFFEATURE_HIDPI: |
| return PP_TRUE; |
| case PP_PDFFEATURE_PRINTING: |
| return (g_print_client_tls.Pointer()->Get() && |
| g_print_client_tls.Pointer()->Get()->IsPrintingEnabled(instance)) |
| ? PP_TRUE |
| : PP_FALSE; |
| } |
| return PP_FALSE; |
| } |
| |
| PP_Resource GetResourceImageForScale(PP_Instance instance_id, |
| PP_ResourceImage image_id, |
| float scale) { |
| // Validate the instance. |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return 0; |
| |
| gfx::ImageSkia* res_image_skia = GetImageResource(image_id); |
| |
| if (!res_image_skia) |
| return 0; |
| |
| return instance->CreateImage(res_image_skia, scale); |
| } |
| |
| PP_Resource GetResourceImage(PP_Instance instance_id, |
| PP_ResourceImage image_id) { |
| return GetResourceImageForScale(instance_id, image_id, 1.0f); |
| } |
| |
| PP_Var ModalPromptForPassword(PP_Instance instance_id, PP_Var message) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return PP_MakeUndefined(); |
| |
| std::string actual_value; |
| scoped_refptr<ppapi::StringVar> message_string( |
| ppapi::StringVar::FromPPVar(message)); |
| |
| IPC::SyncMessage* msg = new PDFHostMsg_PDFModalPromptForPassword( |
| instance->GetRenderView()->GetRoutingID(), |
| message_string->value(), |
| &actual_value); |
| msg->EnableMessagePumping(); |
| instance->GetRenderView()->Send(msg); |
| |
| return ppapi::StringVar::StringToPPVar(actual_value); |
| } |
| |
| PP_Bool IsOutOfProcess(PP_Instance instance_id) { |
| return PP_FALSE; |
| } |
| |
| // This function is intended for both in-process and out-of-process pdf. |
| void SetSelectedText(PP_Instance instance_id, const char* selected_text) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| |
| base::string16 selection_text; |
| base::UTF8ToUTF16(selected_text, strlen(selected_text), &selection_text); |
| instance->SetSelectedText(selection_text); |
| } |
| |
| void SetLinkUnderCursor(PP_Instance instance_id, const char* url) { |
| content::PepperPluginInstance* instance = |
| content::PepperPluginInstance::Get(instance_id); |
| if (!instance) |
| return; |
| instance->SetLinkUnderCursor(url); |
| } |
| |
| void GetV8ExternalSnapshotData(PP_Instance instance_id, |
| const char** natives_data_out, |
| int* natives_size_out, |
| const char** snapshot_data_out, |
| int* snapshot_size_out) { |
| gin::V8Initializer::GetV8ExternalSnapshotData( |
| natives_data_out, natives_size_out, snapshot_data_out, snapshot_size_out); |
| } |
| |
| const PPB_PDF ppb_pdf = { // |
| &GetLocalizedString, // |
| &GetResourceImage, // |
| &GetFontFileWithFallback, // |
| &GetFontTableForPrivateFontFile, // |
| &SearchString, // |
| &DidStartLoading, // |
| &DidStopLoading, // |
| &SetContentRestriction, // |
| &HistogramPDFPageCount, // |
| &UserMetricsRecordAction, // |
| &HasUnsupportedFeature, // |
| &SaveAs, // |
| &Print, // |
| &IsFeatureEnabled, // |
| &GetResourceImageForScale, // |
| &ModalPromptForPassword, // |
| &IsOutOfProcess, // |
| &SetSelectedText, // |
| &SetLinkUnderCursor, // |
| &GetV8ExternalSnapshotData, // |
| }; |
| |
| } // namespace |
| |
| // static |
| const PPB_PDF* PPB_PDF_Impl::GetInterface() { |
| return &ppb_pdf; |
| } |
| |
| // static |
| bool PPB_PDF_Impl::InvokePrintingForInstance(PP_Instance instance_id) { |
| return g_print_client_tls.Pointer()->Get() |
| ? g_print_client_tls.Pointer()->Get()->Print(instance_id) |
| : false; |
| } |
| |
| void PPB_PDF_Impl::SetPrintClient(PPB_PDF_Impl::PrintClient* client) { |
| CHECK(!g_print_client_tls.Pointer()->Get()) |
| << "There should only be a single PrintClient for one RenderThread."; |
| g_print_client_tls.Pointer()->Set(client); |
| } |
| |
| } // namespace pdf |
