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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/printing/print_view_manager_base.h"
#include <memory>
#include <string_view>
#include <utility>
#include <vector>
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/read_only_shared_memory_region.h"
#include "base/memory/ref_counted_memory.h"
#include "base/numerics/safe_conversions.h"
#include "base/observer_list.h"
#include "base/run_loop.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/current_thread.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/bad_message.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/printing/print_compositor_util.h"
#include "chrome/browser/printing/print_error_dialog.h"
#include "chrome/browser/printing/print_job.h"
#include "chrome/browser/printing/print_job_manager.h"
#include "chrome/browser/printing/print_view_manager_common.h"
#include "chrome/browser/printing/printer_query.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/print_preview/printer_handler.h"
#include "chrome/common/pref_names.h"
#include "chrome/grit/generated_resources.h"
#include "components/device_event_log/device_event_log.h"
#include "components/enterprise/buildflags/buildflags.h"
#include "components/prefs/pref_service.h"
#include "components/printing/browser/print_composite_client.h"
#include "components/printing/browser/print_manager_utils.h"
#include "components/printing/common/print.mojom.h"
#include "components/printing/common/print_params.h"
#include "components/services/print_compositor/public/cpp/print_service_mojo_types.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/global_routing_id.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "mojo/public/cpp/system/buffer.h"
#include "printing/buildflags/buildflags.h"
#include "printing/metafile_skia.h"
#include "printing/mojom/print.mojom.h"
#include "printing/print_settings.h"
#include "printing/printed_document.h"
#include "printing/printing_utils.h"
#include "ui/base/l10n/l10n_util.h"
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
#include "chrome/browser/printing/print_view_manager.h"
#include "printing/print_settings_conversion.h"
#endif
#if BUILDFLAG(ENABLE_OOP_PRINTING)
#include "chrome/browser/printing/oop_features.h"
#include "chrome/browser/printing/print_backend_service_manager.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "chrome/browser/printing/xps_features.h"
#endif
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
#include "chrome/browser/enterprise/data_protection/print_utils.h"
#endif
namespace printing {
namespace {
void OnDidGetDefaultPrintSettings(
scoped_refptr<PrintQueriesQueue> queue,
bool want_pdf_settings,
std::unique_ptr<PrinterQuery> printer_query,
mojom::PrintManagerHost::GetDefaultPrintSettingsCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (printer_query->last_status() != mojom::ResultCode::kSuccess) {
if (!want_pdf_settings) {
ShowPrintErrorDialogForInvalidPrinterError();
}
std::move(callback).Run(nullptr);
return;
}
mojom::PrintParamsPtr params = mojom::PrintParams::New();
RenderParamsFromPrintSettings(printer_query->settings(), params.get());
params->document_cookie = printer_query->cookie();
if (!PrintMsgPrintParamsIsValid(*params)) {
if (!want_pdf_settings) {
ShowPrintErrorDialogForInvalidPrinterError();
}
std::move(callback).Run(nullptr);
return;
}
std::move(callback).Run(std::move(params));
queue->QueuePrinterQuery(std::move(printer_query));
}
void OnDidScriptedPrint(
scoped_refptr<PrintQueriesQueue> queue,
std::unique_ptr<PrinterQuery> printer_query,
mojom::PrintManagerHost::ScriptedPrintCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (printer_query->last_status() != mojom::ResultCode::kSuccess ||
!printer_query->settings().dpi()) {
// Notify user of the error, unless it was explicitly canceled.
if (printer_query->last_status() != mojom::ResultCode::kCanceled) {
ShowPrintErrorDialogForGenericError();
}
std::move(callback).Run(nullptr);
return;
}
auto params = mojom::PrintPagesParams::New();
params->params = mojom::PrintParams::New();
RenderParamsFromPrintSettings(printer_query->settings(),
params->params.get());
params->params->document_cookie = printer_query->cookie();
if (!PrintMsgPrintParamsIsValid(*params->params)) {
std::move(callback).Run(nullptr);
return;
}
params->pages = printer_query->settings().ranges();
std::move(callback).Run(std::move(params));
queue->QueuePrinterQuery(std::move(printer_query));
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
std::string PrintMsgPrintParamsErrorDetails(const mojom::PrintParams& params) {
std::vector<std::string_view> details;
if (params.content_size.IsEmpty()) {
details.push_back("content size is empty");
}
if (params.page_size.IsEmpty()) {
details.push_back("page size is empty");
}
if (params.printable_area.IsEmpty()) {
details.push_back("printable area is empty");
}
if (!params.document_cookie) {
details.push_back("invalid document cookie");
}
if (params.dpi.width() <= kMinDpi || params.dpi.height() <= kMinDpi) {
details.push_back("invalid DPI dimensions");
}
if (params.margin_top < 0 || params.margin_left < 0) {
details.push_back("invalid margins");
}
return base::JoinString(details, "; ");
}
#endif // BUILDFLAG(ENABLE_PRINT_PREVIEW)
} // namespace
PrintViewManagerBase::PrintViewManagerBase(content::WebContents* web_contents)
: PrintManager(web_contents),
queue_(g_browser_process->print_job_manager()->queue()) {
DCHECK(queue_);
Profile* profile =
Profile::FromBrowserContext(web_contents->GetBrowserContext());
printing_enabled_.Init(prefs::kPrintingEnabled, profile->GetPrefs());
}
PrintViewManagerBase::~PrintViewManagerBase() {
ReleasePrinterQuery();
DisconnectFromCurrentPrintJob();
}
bool PrintViewManagerBase::PrintNow(content::RenderFrameHost* rfh) {
if (!StartPrintCommon(rfh)) {
return false;
}
GetPrintRenderFrame(rfh)->PrintRequestedPages();
for (auto& observer : GetTestObservers()) {
observer.OnPrintNow(rfh);
}
return true;
}
void PrintViewManagerBase::PrintNodeUnderContextMenu(
content::RenderFrameHost* rfh) {
if (!StartPrintCommon(rfh)) {
return;
}
GetPrintRenderFrame(rfh)->PrintNodeUnderContextMenu();
for (auto& observer : GetTestObservers()) {
observer.OnPrintNow(rfh);
}
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::PrintForPrintPreview(
base::Value::Dict job_settings,
scoped_refptr<base::RefCountedMemory> print_data,
content::RenderFrameHost* rfh,
PrinterHandler::PrintCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
#if BUILDFLAG(ENABLE_OOP_PRINTING) || BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
bool show_system_dialog =
job_settings.FindBool(kSettingShowSystemDialog).value_or(false);
#endif
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (show_system_dialog && ShouldPrintJobOop()) {
if (!RegisterSystemPrintClient()) {
// Platform unable to support system print dialog at this time, treat
// this as a cancel.
std::move(callback).Run(
base::Value("Concurrent system print not allowed"));
return;
}
}
#endif
std::unique_ptr<printing::PrinterQuery> printer_query =
queue()->CreatePrinterQuery(rfh->GetGlobalId());
auto* printer_query_ptr = printer_query.get();
const int page_count = job_settings.FindInt(kSettingPreviewPageCount).value();
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (query_with_ui_client_id().has_value()) {
printer_query->SetClientId(query_with_ui_client_id().value());
}
#endif
printer_query_ptr->SetSettings(
std::move(job_settings),
base::BindOnce(&PrintViewManagerBase::OnPrintSettingsDone,
weak_ptr_factory_.GetWeakPtr(), print_data, page_count,
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
show_system_dialog,
#endif
std::move(callback), std::move(printer_query)));
}
#endif // BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::PrintToPdf(
content::RenderFrameHost* rfh,
const std::string& page_ranges,
mojom::PrintPagesParamsPtr print_pages_params,
print_to_pdf::PdfPrintJob::PrintToPdfCallback callback) {
print_to_pdf::PdfPrintJob::StartJob(
web_contents(), rfh, GetPrintRenderFrame(rfh), page_ranges,
std::move(print_pages_params), std::move(callback));
}
void PrintViewManagerBase::PrintDocument(
scoped_refptr<base::RefCountedMemory> print_data,
const gfx::Size& page_size,
const gfx::Rect& content_area,
const gfx::Point& offsets) {
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
if (content_analysis_before_printing_document_) {
std::move(content_analysis_before_printing_document_)
.Run(print_data, page_size, content_area, offsets);
return;
}
#endif
#if BUILDFLAG(IS_WIN)
const bool source_is_pdf =
!print_job_->document()->settings().is_modifiable();
if (!ShouldPrintUsingXps(source_is_pdf)) {
// Print using GDI, which first requires conversion to EMF.
print_job_->StartConversionToNativeFormat(
print_data, page_size, content_area, offsets,
web_contents()->GetLastCommittedURL());
return;
}
#endif
std::unique_ptr<MetafileSkia> metafile = std::make_unique<MetafileSkia>();
CHECK(metafile->InitFromData(*print_data));
// Update the rendered document. It will send notifications to the listener.
PrintedDocument* document = print_job_->document();
document->SetDocument(std::move(metafile));
ShouldQuitFromInnerMessageLoop();
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
#if BUILDFLAG(IS_WIN)
void PrintViewManagerBase::OnDidUpdatePrintableArea(
std::unique_ptr<PrinterQuery> printer_query,
base::Value::Dict job_settings,
std::unique_ptr<PrintSettings> print_settings,
UpdatePrintSettingsCallback callback,
bool success) {
if (!success) {
PRINTER_LOG(ERROR) << "Unable to update printable area for "
<< base::UTF16ToUTF8(print_settings->device_name())
<< " (paper vendor id "
<< print_settings->requested_media().vendor_id << ")";
std::move(callback).Run(nullptr);
return;
}
PRINTER_LOG(EVENT) << "Paper printable area updated for vendor id "
<< print_settings->requested_media().vendor_id;
CompleteUpdatePrintSettings(std::move(job_settings),
std::move(print_settings), std::move(callback));
}
#endif
void PrintViewManagerBase::CompleteUpdatePrintSettings(
base::Value::Dict job_settings,
std::unique_ptr<PrintSettings> print_settings,
UpdatePrintSettingsCallback callback) {
mojom::PrintPagesParamsPtr settings = mojom::PrintPagesParams::New();
settings->pages = GetPageRangesFromJobSettings(job_settings);
settings->params = mojom::PrintParams::New();
RenderParamsFromPrintSettings(*print_settings, settings->params.get());
settings->params->document_cookie = PrintSettings::NewCookie();
if (!PrintMsgPrintParamsIsValid(*settings->params)) {
mojom::PrinterType printer_type = static_cast<mojom::PrinterType>(
*job_settings.FindInt(kSettingPrinterType));
PRINTER_LOG(ERROR) << "Printer settings invalid for "
<< base::UTF16ToUTF8(print_settings->device_name())
<< " (destination type " << printer_type << "): "
<< PrintMsgPrintParamsErrorDetails(*settings->params);
std::move(callback).Run(nullptr);
return;
}
set_cookie(settings->params->document_cookie);
std::move(callback).Run(std::move(settings));
}
void PrintViewManagerBase::OnPrintSettingsDone(
scoped_refptr<base::RefCountedMemory> print_data,
uint32_t page_count,
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
bool show_system_dialog,
#endif
PrinterHandler::PrintCallback callback,
std::unique_ptr<printing::PrinterQuery> printer_query) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
DCHECK(printer_query);
// Check if the job was cancelled. With out-of-process printing, this could
// happen if we detect that another system print dialog is already being
// displayed. Otherwise this should only happen on Windows when the system
// dialog is cancelled.
if (printer_query->last_status() == mojom::ResultCode::kCanceled) {
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
UnregisterSystemPrintClient();
}
#endif
#if BUILDFLAG(IS_WIN)
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&PrintViewManagerBase::SystemDialogCancelled,
weak_ptr_factory_.GetWeakPtr()));
#endif
std::move(callback).Run(base::Value());
return;
}
if (!printer_query->cookie() || !printer_query->settings().dpi()) {
PRINTER_LOG(ERROR) << "Unable to update print settings";
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
UnregisterSystemPrintClient();
}
#endif
ShowPrintErrorDialogForGenericError();
std::move(callback).Run(base::Value("Update settings failed"));
return;
}
// Post task so that the query has time to reset the callback before calling
// DidGetPrintedPagesCount().
int cookie = printer_query->cookie();
queue()->QueuePrinterQuery(std::move(printer_query));
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&PrintViewManagerBase::StartLocalPrintJob,
weak_ptr_factory_.GetWeakPtr(), print_data, page_count,
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
show_system_dialog,
#endif
cookie, std::move(callback)));
}
void PrintViewManagerBase::StartLocalPrintJob(
scoped_refptr<base::RefCountedMemory> print_data,
uint32_t page_count,
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
bool show_system_dialog,
#endif
int cookie,
PrinterHandler::PrintCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
// Populating `content_analysis_before_printing_document_` if needed should be
// done first in this function's workflow, this way other code can check if
// content analysis is going to happen and delay starting `print_job_` to
// avoid needlessly prompting the user.
using enterprise_data_protection::PrintScanningContext;
auto context = show_system_dialog
? PrintScanningContext::kSystemPrintBeforePrintDocument
: PrintScanningContext::kNormalPrintBeforePrintDocument;
std::optional<enterprise_connectors::ContentAnalysisDelegate::Data>
scanning_data = enterprise_data_protection::GetPrintAnalysisData(
web_contents(), context);
if (scanning_data) {
set_content_analysis_before_printing_document(base::BindOnce(
&PrintViewManagerBase::ContentAnalysisBeforePrintingDocument,
weak_ptr_factory_.GetWeakPtr(), std::move(*scanning_data)));
}
#endif // BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
set_cookie(cookie);
DidGetPrintedPagesCount(cookie, page_count);
if (!PrintJobHasDocument(cookie)) {
std::move(callback).Run(base::Value("Failed to print"));
return;
}
#if BUILDFLAG(IS_WIN)
print_job_->ResetPageMapping();
#endif
const printing::PrintSettings& settings = print_job_->settings();
gfx::Size page_size = settings.page_setup_device_units().physical_size();
gfx::Rect content_area =
gfx::Rect(0, 0, page_size.width(), page_size.height());
PrintDocument(print_data, page_size, content_area,
settings.page_setup_device_units().printable_area().origin());
std::move(callback).Run(base::Value());
}
#endif // BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::GetDefaultPrintSettingsReply(
GetDefaultPrintSettingsCallback callback,
mojom::PrintParamsPtr params) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop() && !params) {
// The attempt to use the default settings failed. There should be no
// subsequent call to get settings from the user that would normally be
// shared as part of this client registration. Immediately notify the
// service manager that this client is no longer needed.
UnregisterSystemPrintClient();
}
#endif
if (params) {
set_cookie(params->document_cookie);
std::move(callback).Run(std::move(params));
} else {
set_cookie(PrintSettings::NewInvalidCookie());
std::move(callback).Run(nullptr);
}
}
void PrintViewManagerBase::ScriptedPrintReply(
ScriptedPrintCallback callback,
int process_id,
mojom::PrintPagesParamsPtr params) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
// Finished getting all settings (defaults and from user), no further need
// to be registered as a system print client.
UnregisterSystemPrintClient();
}
#endif // BUILDFLAG(ENABLE_OOP_PRINTING)
if (!content::RenderProcessHost::FromID(process_id)) {
// Early return if the renderer is not alive.
return;
}
if (params) {
set_cookie(params->params->document_cookie);
std::move(callback).Run(std::move(params));
} else {
set_cookie(PrintSettings::NewInvalidCookie());
std::move(callback).Run(nullptr);
}
}
void PrintViewManagerBase::NavigationStopped() {
// Cancel the current job, wait for the worker to finish.
TerminatePrintJob(true);
}
std::u16string PrintViewManagerBase::RenderSourceName() {
std::u16string name(web_contents()->GetTitle());
if (name.empty())
name = l10n_util::GetStringUTF16(IDS_DEFAULT_PRINT_DOCUMENT_TITLE);
return name;
}
void PrintViewManagerBase::DidGetPrintedPagesCount(int32_t cookie,
uint32_t number_pages) {
PrintManager::DidGetPrintedPagesCount(cookie, number_pages);
OpportunisticallyCreatePrintJob(cookie);
}
bool PrintViewManagerBase::PrintJobHasDocument(int cookie) {
if (!OpportunisticallyCreatePrintJob(cookie))
return false;
// These checks may fail since we are completely asynchronous. Old spurious
// messages can be received if one of the processes is overloaded.
PrintedDocument* document = print_job_->document();
return document && document->cookie() == cookie;
}
bool PrintViewManagerBase::OnComposePdfDoneImpl(
int document_cookie,
const gfx::Size& page_size,
const gfx::Rect& content_area,
const gfx::Point& physical_offsets,
mojom::PrintCompositor::Status status,
base::ReadOnlySharedMemoryRegion region) {
if (status != mojom::PrintCompositor::Status::kSuccess) {
DLOG(ERROR) << "Compositing pdf failed with error " << status;
return false;
}
if (!print_job_ || !print_job_->document() ||
print_job_->document()->cookie() != document_cookie) {
return false;
}
DCHECK(region.IsValid());
DCHECK(LooksLikePdf(region.Map().GetMemoryAsSpan<const uint8_t>()));
scoped_refptr<base::RefCountedSharedMemoryMapping> data =
base::RefCountedSharedMemoryMapping::CreateFromWholeRegion(region);
if (!data)
return false;
PrintDocument(data, page_size, content_area, physical_offsets);
return true;
}
void PrintViewManagerBase::OnComposeDocumentDone(
int document_cookie,
const gfx::Size& page_size,
const gfx::Rect& content_area,
const gfx::Point& physical_offsets,
DidPrintDocumentCallback callback,
mojom::PrintCompositor::Status status,
base::ReadOnlySharedMemoryRegion region) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
bool success =
OnComposePdfDoneImpl(document_cookie, page_size, content_area,
physical_offsets, status, std::move(region));
OnDidPrintDocument(std::move(callback), success);
}
void PrintViewManagerBase::OnDidPrintDocument(DidPrintDocumentCallback callback,
bool succeeded) {
std::move(callback).Run(succeeded);
for (auto& observer : GetTestObservers()) {
observer.OnDidPrintDocument();
}
}
void PrintViewManagerBase::DidPrintDocument(
mojom::DidPrintDocumentParamsPtr params,
DidPrintDocumentCallback callback) {
if (!PrintJobHasDocument(params->document_cookie)) {
OnDidPrintDocument(std::move(callback), /*succeeded=*/false);
return;
}
const mojom::DidPrintContentParams& content = *params->content;
if (!content.metafile_data_region.IsValid()) {
NOTREACHED() << "invalid memory handle";
}
if (IsOopifEnabled() && print_job_->document()->settings().is_modifiable()) {
auto* client = PrintCompositeClient::FromWebContents(web_contents());
client->CompositeDocument(
params->document_cookie, GetCurrentTargetFrame(), content,
ui::AXTreeUpdate(), mojom::GenerateDocumentOutline::kNone,
GetCompositorDocumentType(),
base::BindOnce(&PrintViewManagerBase::OnComposeDocumentDone,
weak_ptr_factory_.GetWeakPtr(), params->document_cookie,
params->page_size, params->content_area,
params->physical_offsets, std::move(callback)));
return;
}
auto data = base::RefCountedSharedMemoryMapping::CreateFromWholeRegion(
content.metafile_data_region);
if (!data) {
NOTREACHED() << "couldn't map";
}
PrintDocument(data, params->page_size, params->content_area,
params->physical_offsets);
OnDidPrintDocument(std::move(callback), /*succeeded=*/true);
}
void PrintViewManagerBase::GetDefaultPrintSettings(
GetDefaultPrintSettingsCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!GetPrintingEnabledBooleanPref()) {
GetDefaultPrintSettingsReply(std::move(callback), nullptr);
return;
}
content::RenderFrameHost* render_frame_host = GetCurrentTargetFrame();
if (!render_frame_host->IsActive()) {
// Only active RFHs should show UI elements.
GetDefaultPrintSettingsReply(std::move(callback), nullptr);
return;
}
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop() &&
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
!analyzing_content_ &&
#endif
!query_with_ui_client_id().has_value()) {
// Script initiated print, this is first signal of start of printing.
RegisterSystemPrintClient();
}
#endif
content::RenderProcessHost* render_process_host =
render_frame_host->GetProcess();
auto callback_wrapper =
base::BindOnce(&PrintViewManagerBase::GetDefaultPrintSettingsReply,
weak_ptr_factory_.GetWeakPtr(), std::move(callback));
std::unique_ptr<PrinterQuery> printer_query =
queue()->PopPrinterQuery(PrintSettings::NewInvalidCookie());
if (!printer_query) {
printer_query =
queue()->CreatePrinterQuery(render_frame_host->GetGlobalId());
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (query_with_ui_client_id().has_value()) {
printer_query->SetClientId(query_with_ui_client_id().value());
}
#endif
}
// Sometimes it is desired to get the PDF settings as opposed to the settings
// of the default system print driver.
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
bool want_pdf_settings = analyzing_content_;
#else
bool want_pdf_settings = false;
#endif
// Loads default settings. This is asynchronous, only the mojo message sender
// will hang until the settings are retrieved.
auto* printer_query_ptr = printer_query.get();
printer_query_ptr->GetDefaultSettings(
base::BindOnce(&OnDidGetDefaultPrintSettings, queue_, want_pdf_settings,
std::move(printer_query), std::move(callback_wrapper)),
!render_process_host->IsPdf(), want_pdf_settings);
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::UpdatePrintSettings(
base::Value::Dict job_settings,
UpdatePrintSettingsCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!GetPrintingEnabledBooleanPref()) {
std::move(callback).Run(nullptr);
return;
}
std::optional<int> printer_type_value =
job_settings.FindInt(kSettingPrinterType);
if (!printer_type_value) {
std::move(callback).Run(nullptr);
return;
}
mojom::PrinterType printer_type =
static_cast<mojom::PrinterType>(*printer_type_value);
if (printer_type != mojom::PrinterType::kExtension &&
printer_type != mojom::PrinterType::kPdf &&
printer_type != mojom::PrinterType::kLocal) {
std::move(callback).Run(nullptr);
return;
}
// `job_settings` does not yet contain the rasterized PDF dpi, so if the user
// has the print preference set, fetch it for use in
// `PrintSettingsFromJobSettings()`.
content::BrowserContext* context =
web_contents() ? web_contents()->GetBrowserContext() : nullptr;
PrefService* prefs =
context ? Profile::FromBrowserContext(context)->GetPrefs() : nullptr;
if (prefs && prefs->HasPrefPath(prefs::kPrintRasterizePdfDpi)) {
int value = prefs->GetInteger(prefs::kPrintRasterizePdfDpi);
if (value > 0)
job_settings.Set(kSettingRasterizePdfDpi, value);
}
std::unique_ptr<PrintSettings> print_settings =
PrintSettingsFromJobSettings(job_settings);
if (!print_settings) {
std::move(callback).Run(nullptr);
return;
}
bool open_in_external_preview =
job_settings.contains(kSettingOpenPDFInPreview);
if (!open_in_external_preview &&
(printer_type == mojom::PrinterType::kPdf ||
printer_type == mojom::PrinterType::kExtension)) {
if (print_settings->page_setup_device_units().printable_area().IsEmpty()) {
PrinterQuery::ApplyDefaultPrintableAreaToVirtualPrinterPrintSettings(
*print_settings);
}
}
#if BUILDFLAG(IS_WIN)
// TODO(crbug.com/40260379): Remove this if the printable areas can be made
// fully available from `PrintBackend::GetPrinterSemanticCapsAndDefaults()`
// for in-browser queries.
if (printer_type == mojom::PrinterType::kLocal) {
// Without a document cookie to find a previous query, must generate a
// fresh printer query each time, even if the paper size didn't change.
std::unique_ptr<PrinterQuery> printer_query =
queue()->CreatePrinterQuery(GetCurrentTargetFrame()->GetGlobalId());
auto* printer_query_ptr = printer_query.get();
auto* print_settings_ptr = print_settings.get();
printer_query_ptr->UpdatePrintableArea(
print_settings_ptr,
base::BindOnce(&PrintViewManagerBase::OnDidUpdatePrintableArea,
weak_ptr_factory_.GetWeakPtr(), std::move(printer_query),
std::move(job_settings), std::move(print_settings),
std::move(callback)));
return;
}
#endif
CompleteUpdatePrintSettings(std::move(job_settings),
std::move(print_settings), std::move(callback));
}
void PrintViewManagerBase::SetAccessibilityTree(
int32_t cookie,
const ui::AXTreeUpdate& accessibility_tree) {
auto* client = PrintCompositeClient::FromWebContents(web_contents());
if (client) {
client->SetAccessibilityTree(cookie, accessibility_tree);
}
}
#endif // BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::IsPrintingEnabled(
IsPrintingEnabledCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
std::move(callback).Run(GetPrintingEnabledBooleanPref());
}
void PrintViewManagerBase::ScriptedPrint(mojom::ScriptedPrintParamsPtr params,
ScriptedPrintCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
content::RenderFrameHost* render_frame_host = GetCurrentTargetFrame();
content::RenderProcessHost* render_process_host =
render_frame_host->GetProcess();
if (params->is_scripted && render_frame_host->IsNestedWithinFencedFrame()) {
// The renderer should have checked and disallowed the request for fenced
// frames in ChromeClient. Ignore the request and mark it as bad if it
// didn't happen for some reason.
bad_message::ReceivedBadMessage(
render_process_host, bad_message::PVMB_SCRIPTED_PRINT_FENCED_FRAME);
std::move(callback).Run(nullptr);
return;
}
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop() && !query_with_ui_client_id().has_value()) {
// Renderer process has requested settings outside of the expected setup.
std::move(callback).Run(nullptr);
return;
}
#endif
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
std::optional<enterprise_connectors::ContentAnalysisDelegate::Data>
scanning_data = enterprise_data_protection::GetPrintAnalysisData(
web_contents(), enterprise_data_protection::PrintScanningContext::
kBeforeSystemDialog);
if (scanning_data) {
set_content_analysis_before_printing_document(base::BindOnce(
&PrintViewManagerBase::ContentAnalysisBeforePrintingDocument,
weak_ptr_factory_.GetWeakPtr(), std::move(*scanning_data)));
}
#endif // BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
CompleteScriptedPrint(render_frame_host, std::move(params),
std::move(callback));
}
void PrintViewManagerBase::PrintingFailed(int32_t cookie,
mojom::PrintFailureReason reason) {
// Note: Not redundant with cookie checks in the same method in other parts of
// the class hierarchy.
if (!IsValidCookie(cookie))
return;
PrintManager::PrintingFailed(cookie, reason);
// `PrintingFailed()` can occur because asynchronous compositing results
// don't complete until after a print job has already failed and been
// destroyed. In such cases the error notification to the user will
// have already been displayed, and a second message should not be
// shown.
if (print_job_ && print_job_->document() &&
print_job_->document()->cookie() == cookie) {
ShowPrintErrorDialogForGenericError();
}
ReleasePrinterQuery();
}
void PrintViewManagerBase::AddTestObserver(TestObserver& observer) {
test_observers_.AddObserver(&observer);
}
void PrintViewManagerBase::RemoveTestObserver(TestObserver& observer) {
test_observers_.RemoveObserver(&observer);
}
void PrintViewManagerBase::RenderFrameHostStateChanged(
content::RenderFrameHost* render_frame_host,
content::RenderFrameHost::LifecycleState /*old_state*/,
content::RenderFrameHost::LifecycleState new_state) {
if (new_state == content::RenderFrameHost::LifecycleState::kActive &&
render_frame_host->GetProcess()->IsPdf() &&
!render_frame_host->GetMainFrame()->GetParentOrOuterDocument()) {
GetPrintRenderFrame(render_frame_host)->ConnectToPdfRenderer();
}
}
void PrintViewManagerBase::RenderFrameDeleted(
content::RenderFrameHost* render_frame_host) {
PrintManager::RenderFrameDeleted(render_frame_host);
// Terminates or cancels the print job if one was pending.
if (render_frame_host != printing_rfh_)
return;
for (auto& observer : GetTestObservers()) {
observer.OnRenderFrameDeleted();
}
printing_rfh_ = nullptr;
PrintManager::PrintingRenderFrameDeleted();
ReleasePrinterQuery();
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
UnregisterSystemPrintClient();
}
#endif
if (!print_job_)
return;
scoped_refptr<PrintedDocument> document(print_job_->document());
if (document) {
// If IsComplete() returns false, the document isn't completely rendered.
// Since our renderer is gone, there's nothing to do, cancel it. Otherwise,
// the print job may finish without problem.
TerminatePrintJob(!document->IsComplete());
}
}
#if BUILDFLAG(IS_WIN) && BUILDFLAG(ENABLE_PRINT_PREVIEW)
void PrintViewManagerBase::SystemDialogCancelled() {
// System dialog was cancelled. Clean up the print job and notify the
// BackgroundPrintingManager.
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
ReleasePrinterQuery();
TerminatePrintJob(true);
}
#endif
bool PrintViewManagerBase::GetPrintingEnabledBooleanPref() const {
return printing_enabled_.GetValue();
}
void PrintViewManagerBase::OnDocDone(int job_id, PrintedDocument* document) {
#if BUILDFLAG(IS_ANDROID)
DCHECK_LE(number_pages(), kMaxPageCount);
PdfWritingDone(base::checked_cast<int>(number_pages()));
#endif
}
void PrintViewManagerBase::OnJobDone() {
// Printing is done, we don't need it anymore.
// print_job_->is_job_pending() may still be true, depending on the order
// of object registration.
printing_succeeded_ = true;
ReleasePrintJob();
}
void PrintViewManagerBase::OnCanceling() {
canceling_job_ = true;
}
void PrintViewManagerBase::OnFailed() {
if (!canceling_job_)
ShowPrintErrorDialogForGenericError();
TerminatePrintJob(true);
}
bool PrintViewManagerBase::RenderAllMissingPagesNow() {
if (!print_job_ || !print_job_->is_job_pending())
return false;
// Is the document already complete?
if (print_job_->document() && print_job_->document()->IsComplete()) {
printing_succeeded_ = true;
return true;
}
// We can't print if there is no renderer.
if (!web_contents() ||
!web_contents()->GetPrimaryMainFrame()->IsRenderFrameLive()) {
return false;
}
// WebContents is either dying or a second consecutive request to print
// happened before the first had time to finish. We need to render all the
// pages in an hurry if a print_job_ is still pending. No need to wait for it
// to actually spool the pages, only to have the renderer generate them. Run
// a message loop until we get our signal that the print job is satisfied.
// `quit_inner_loop_` will be called as soon as
// print_job_->document()->IsComplete() is true in DidPrintDocument(). The
// check is done in ShouldQuitFromInnerMessageLoop().
// BLOCKS until all the pages are received. (Need to enable recursive task)
// WARNING: Do not do any work after RunInnerMessageLoop() returns, as `this`
// may have gone away.
if (!RunInnerMessageLoop()) {
// This function is always called from DisconnectFromCurrentPrintJob() so we
// know that the job will be stopped/canceled in any case.
return false;
}
return true;
}
void PrintViewManagerBase::ShouldQuitFromInnerMessageLoop() {
// Look at the reason.
DCHECK(print_job_->document());
if (print_job_->document() && print_job_->document()->IsComplete() &&
quit_inner_loop_) {
// We are in a message loop created by RenderAllMissingPagesNow. Quit from
// it.
std::move(quit_inner_loop_).Run();
}
}
scoped_refptr<PrintJob> PrintViewManagerBase::CreatePrintJob(
PrintJobManager* print_job_manager) {
return base::MakeRefCounted<PrintJob>(print_job_manager);
}
bool PrintViewManagerBase::SetupNewPrintJob(
std::unique_ptr<PrinterQuery> query) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
DCHECK(!quit_inner_loop_);
DCHECK(query);
// Disconnect the current `print_job_`.
auto weak_this = weak_ptr_factory_.GetWeakPtr();
DisconnectFromCurrentPrintJob();
if (!weak_this)
return false;
// We can't print if there is no renderer.
if (!web_contents()->GetPrimaryMainFrame()->IsRenderFrameLive()) {
return false;
}
DCHECK(!print_job_);
print_job_ = CreatePrintJob(g_browser_process->print_job_manager());
print_job_->Initialize(std::move(query), RenderSourceName(), number_pages());
#if BUILDFLAG(IS_CHROMEOS)
print_job_->SetSource(web_contents()->GetBrowserContext()->IsOffTheRecord()
? PrintJob::Source::kPrintPreviewIncognito
: PrintJob::Source::kPrintPreview,
/*source_id=*/"");
#endif
print_job_->AddObserver(*this);
printing_succeeded_ = false;
return true;
}
void PrintViewManagerBase::DisconnectFromCurrentPrintJob() {
// Make sure all the necessary rendered page are done. Don't bother with the
// return value.
auto weak_this = weak_ptr_factory_.GetWeakPtr();
bool result = RenderAllMissingPagesNow();
if (!weak_this)
return;
// Verify that assertion.
if (print_job_ && print_job_->document() &&
!print_job_->document()->IsComplete()) {
DCHECK(!result);
// That failed.
TerminatePrintJob(true);
} else {
// DO NOT wait for the job to finish.
ReleasePrintJob();
}
}
void PrintViewManagerBase::TerminatePrintJob(bool cancel) {
if (!print_job_)
return;
if (cancel) {
canceling_job_ = true;
// We don't need the metafile data anymore because the printing is canceled.
print_job_->Cancel();
quit_inner_loop_.Reset();
#if BUILDFLAG(IS_ANDROID)
PdfWritingDone(0);
#endif
} else {
DCHECK(!quit_inner_loop_);
DCHECK(!print_job_->document() || print_job_->document()->IsComplete());
// WebContents is either dying or navigating elsewhere. We need to render
// all the pages in an hurry if a print job is still pending. This does the
// trick since it runs a blocking message loop:
print_job_->Stop();
}
ReleasePrintJob();
}
void PrintViewManagerBase::ReleasePrintJob() {
content::RenderFrameHost* rfh = printing_rfh_;
printing_rfh_ = nullptr;
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
// Ensure that any residual registration of printing client is released.
// This might be necessary in some abnormal cases, such as the associated
// render process having terminated.
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
if (!analyzing_content_) {
UnregisterSystemPrintClient();
}
#else
UnregisterSystemPrintClient();
#endif
}
#endif
if (!print_job_)
return;
if (rfh) {
// printing_rfh_ should only ever point to a RenderFrameHost with a live
// RenderFrame.
DCHECK(rfh->IsRenderFrameLive());
GetPrintRenderFrame(rfh)->PrintingDone(printing_succeeded_);
}
print_job_->RemoveObserver(*this);
// Don't close the worker thread.
print_job_ = nullptr;
}
bool PrintViewManagerBase::RunInnerMessageLoop() {
// This value may actually be too low:
//
// - If we're looping because of printer settings initialization, the premise
// here is that some poor users have their print server away on a VPN over a
// slow connection. In this situation, the simple fact of opening the printer
// can be dead slow. On the other side, we don't want to die infinitely for a
// real network error. Give the printer 60 seconds to comply.
//
// - If we're looping because of renderer page generation, the renderer could
// be CPU bound, the page overly complex/large or the system just
// memory-bound.
static constexpr base::TimeDelta kPrinterSettingsTimeout = base::Seconds(60);
base::OneShotTimer quit_timer;
base::RunLoop run_loop{base::RunLoop::Type::kNestableTasksAllowed};
quit_timer.Start(FROM_HERE, kPrinterSettingsTimeout,
run_loop.QuitWhenIdleClosure());
quit_inner_loop_ = run_loop.QuitClosure();
auto weak_this = weak_ptr_factory_.GetWeakPtr();
run_loop.Run();
if (!weak_this)
return false;
// If the inner-loop quit closure is still set then we timed out.
bool success = !quit_inner_loop_;
quit_inner_loop_.Reset();
return success;
}
bool PrintViewManagerBase::OpportunisticallyCreatePrintJob(int cookie) {
if (print_job_)
return true;
if (!cookie) {
// Out of sync. It may happen since we are completely asynchronous. Old
// spurious message can happen if one of the processes is overloaded.
return false;
}
// The job was initiated by a script. Time to get the corresponding worker
// thread.
std::unique_ptr<PrinterQuery> queued_query = queue()->PopPrinterQuery(cookie);
if (!queued_query) {
// Out of sync. It may happen since we are completely asynchronous, when
// an error occurs during the first setup of a print job.
return false;
}
if (!SetupNewPrintJob(std::move(queued_query))) {
// Don't kill anything.
return false;
}
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
// Don't start printing if enterprise checks are being performed to check if
// printing is allowed, or if content analysis is going to take place right
// before starting `print_job_`.
if (analyzing_content_ || content_analysis_before_printing_document_) {
return true;
}
#endif
// Settings are already loaded. Go ahead. This will set
// print_job_->is_job_pending() to true.
print_job_->StartPrinting();
return true;
}
bool PrintViewManagerBase::IsCrashed() {
return web_contents()->IsCrashed();
}
void PrintViewManagerBase::SetPrintingRFH(content::RenderFrameHost* rfh) {
// Do not allow any print operation during prerendering.
if (rfh->GetLifecycleState() ==
content::RenderFrameHost::LifecycleState::kPrerendering) {
// If we come here during prerendering, it's because either:
// 1) Renderer did something unexpected (indicates a compromised renderer),
// or 2) Some plumbing in the browser side is wrong (wrong code).
// mojo::ReportBadMessage() below will let the renderer crash for 1), or
// will hit DCHECK for 2).
mojo::ReportBadMessage(
"The print's message shouldn't reach here during prerendering.");
return;
}
DCHECK(!printing_rfh_);
// Protect against future unsafety, since printing_rfh_ is cleared by
// RenderFrameDeleted(), which will not be called if the render frame is not
// live.
CHECK(rfh->IsRenderFrameLive());
printing_rfh_ = rfh;
}
bool PrintViewManagerBase::StartPrintCommon(content::RenderFrameHost* rfh) {
// Remember the ID for `rfh`, to enable checking that the `RenderFrameHost`
// is still valid after a possible inner message loop runs in
// `DisconnectFromCurrentPrintJob()`.
content::GlobalRenderFrameHostId rfh_id = rfh->GetGlobalId();
auto weak_this = weak_ptr_factory_.GetWeakPtr();
DisconnectFromCurrentPrintJob();
if (!weak_this) {
return false;
}
// Don't print / print preview crashed tabs.
if (IsCrashed()) {
return false;
}
// Don't print if `rfh` is no longer live.
if (!content::RenderFrameHost::FromID(rfh_id) || !rfh->IsRenderFrameLive()) {
return false;
}
#if BUILDFLAG(ENABLE_OOP_PRINTING)
if (ShouldPrintJobOop()) {
// Register this worker so that the service persists as long as the user
// keeps the system print dialog UI displayed.
if (!RegisterSystemPrintClient()) {
return false;
}
}
#endif
SetPrintingRFH(rfh);
return true;
}
#if BUILDFLAG(ENABLE_OOP_PRINTING)
bool PrintViewManagerBase::RegisterSystemPrintClient() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
DCHECK(ShouldPrintJobOop());
DCHECK(!query_with_ui_client_id().has_value());
query_with_ui_client_id_ =
PrintBackendServiceManager::GetInstance().RegisterQueryWithUiClient();
bool registered = query_with_ui_client_id().has_value();
if (!registered) {
PRINTER_LOG(DEBUG) << "Unable to initiate a concurrent system print dialog";
}
for (auto& observer : GetTestObservers()) {
observer.OnRegisterSystemPrintClient(registered);
}
return registered;
}
void PrintViewManagerBase::UnregisterSystemPrintClient() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
DCHECK(ShouldPrintJobOop());
if (!query_with_ui_client_id().has_value()) {
return;
}
PrintBackendServiceManager::GetInstance().UnregisterClient(
query_with_ui_client_id().value());
query_with_ui_client_id_.reset();
}
#endif // BUILDFLAG(ENABLE_OOP_PRINTING)
void PrintViewManagerBase::ReleasePrinterQuery() {
int current_cookie = cookie();
if (!current_cookie)
return;
set_cookie(PrintSettings::NewInvalidCookie());
PrintJobManager* print_job_manager = g_browser_process->print_job_manager();
// May be NULL in tests.
if (!print_job_manager)
return;
// Let `printer_query` go out of scope to release it.
std::unique_ptr<PrinterQuery> printer_query =
queue()->PopPrinterQuery(current_cookie);
}
void PrintViewManagerBase::CompleteScriptedPrint(
content::RenderFrameHost* rfh,
mojom::ScriptedPrintParamsPtr params,
ScriptedPrintCallback callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
content::RenderProcessHost* render_process_host = rfh->GetProcess();
auto callback_wrapper = base::BindOnce(
&PrintViewManagerBase::ScriptedPrintReply, weak_ptr_factory_.GetWeakPtr(),
std::move(callback), render_process_host->GetDeprecatedID());
std::unique_ptr<PrinterQuery> printer_query =
queue()->PopPrinterQuery(params->cookie);
if (!printer_query)
printer_query = queue()->CreatePrinterQuery(rfh->GetGlobalId());
auto* printer_query_ptr = printer_query.get();
printer_query_ptr->GetSettingsFromUser(
params->expected_pages_count, params->has_selection, params->margin_type,
params->is_scripted, !render_process_host->IsPdf(),
base::BindOnce(&OnDidScriptedPrint, queue_, std::move(printer_query),
std::move(callback_wrapper)));
}
#if BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
void PrintViewManagerBase::CompletePrintDocumentAfterContentAnalysis(
scoped_refptr<base::RefCountedMemory> print_data,
const gfx::Size& page_size,
const gfx::Rect& content_area,
const gfx::Point& offsets,
bool allowed) {
if (!allowed || IsCrashed()) {
ReleasePrinterQuery();
print_job_->CleanupAfterContentAnalysisDenial();
TerminatePrintJob(/*cancel=*/true);
return;
}
print_job_->StartPrinting();
PrintDocument(print_data, page_size, content_area, offsets);
}
void PrintViewManagerBase::ContentAnalysisBeforePrintingDocument(
enterprise_connectors::ContentAnalysisDelegate::Data scanning_data,
scoped_refptr<base::RefCountedMemory> print_data,
const gfx::Size& page_size,
const gfx::Rect& content_area,
const gfx::Point& offsets) {
scanning_data.printer_name =
base::UTF16ToUTF8(print_job_->document()->settings().device_name());
auto on_verdict = base::BindOnce(
&PrintViewManagerBase::CompletePrintDocumentAfterContentAnalysis,
weak_ptr_factory_.GetWeakPtr(), print_data, page_size, content_area,
offsets);
enterprise_data_protection::PrintIfAllowedByPolicy(
print_data, web_contents()->GetOutermostWebContents(),
std::move(scanning_data), std::move(on_verdict));
}
void PrintViewManagerBase::set_analyzing_content(bool analyzing) {
PRINTER_LOG(EVENT) << (analyzing ? "Starting" : "Completed")
<< " content analysis";
analyzing_content_ = analyzing;
}
void PrintViewManagerBase::set_content_analysis_before_printing_document(
PrintDocumentCallback callback) {
content_analysis_before_printing_document_ = std::move(callback);
}
#endif // BUILDFLAG(ENTERPRISE_CONTENT_ANALYSIS)
} // namespace printing
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