src/chrome/service/cloud_print/print_system_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/service/cloud_print/print_system.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/files/file_util.h"
   9 #include "base/json/json_writer.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/profiler/scoped_tracker.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/win/object_watcher.h"
  14 #include "base/win/scoped_bstr.h"
  15 #include "base/win/scoped_comptr.h"
  16 #include "base/win/scoped_hdc.h"
  17 #include "chrome/common/chrome_switches.h"
  18 #include "chrome/common/cloud_print/cloud_print_cdd_conversion.h"
  19 #include "chrome/common/cloud_print/cloud_print_constants.h"
  20 #include "chrome/common/crash_keys.h"
  21 #include "chrome/service/cloud_print/cdd_conversion_win.h"
  22 #include "chrome/service/service_process.h"
  23 #include "chrome/service/service_utility_process_host.h"
  24 #include "printing/backend/win_helper.h"
  25 #include "printing/emf_win.h"
  26 #include "printing/page_range.h"
  27 #include "printing/pdf_render_settings.h"
  28 #include "printing/printing_utils.h"
  29 #include "ui/gfx/geometry/rect.h"
  30
  31 namespace cloud_print {
  32
  33 namespace {
  34
  35 class PrintSystemWatcherWin : public base::win::ObjectWatcher::Delegate {
  36  public:
  37   PrintSystemWatcherWin()
  38       : delegate_(NULL),
  39         did_signal_(false) {
  40   }
  41   ~PrintSystemWatcherWin() {
  42     Stop();
  43   }
  44
  45   class Delegate {
  46    public:
  47     virtual ~Delegate() {}
  48     virtual void OnPrinterAdded() = 0;
  49     virtual void OnPrinterDeleted() = 0;
  50     virtual void OnPrinterChanged() = 0;
  51     virtual void OnJobChanged() = 0;
  52   };
  53
  54   bool Start(const std::string& printer_name, Delegate* delegate) {
  55     scoped_refptr<printing::PrintBackend> print_backend(
  56         printing::PrintBackend::CreateInstance(NULL));
  57     printer_info_ = print_backend->GetPrinterDriverInfo(printer_name);
  58     crash_keys::ScopedPrinterInfo crash_key(printer_info_);
  59
  60     delegate_ = delegate;
  61     // An empty printer name means watch the current server, we need to pass
  62     // NULL to OpenPrinter.
  63     LPTSTR printer_name_to_use = NULL;
  64     std::wstring printer_name_wide;
  65     if (!printer_name.empty()) {
  66       printer_name_wide = base::UTF8ToWide(printer_name);
  67       printer_name_to_use = const_cast<LPTSTR>(printer_name_wide.c_str());
  68     }
  69     bool ret = false;
  70     if (printer_.OpenPrinter(printer_name_to_use)) {
  71       printer_change_.Set(FindFirstPrinterChangeNotification(
  72           printer_.Get(), PRINTER_CHANGE_PRINTER|PRINTER_CHANGE_JOB, 0, NULL));
  73       if (printer_change_.IsValid()) {
  74         ret = watcher_.StartWatching(printer_change_.Get(), this);
  75       }
  76     }
  77     if (!ret) {
  78       Stop();
  79     }
  80     return ret;
  81   }
  82
  83   bool Stop() {
  84     watcher_.StopWatching();
  85     printer_.Close();
  86     printer_change_.Close();
  87     return true;
  88   }
  89
  90   // base::ObjectWatcher::Delegate method
  91   virtual void OnObjectSignaled(HANDLE object) {
  92     // TODO(vadimt): Remove ScopedTracker below once crbug.com/418183 is fixed.
  93     tracked_objects::ScopedTracker tracking_profile(
  94         FROM_HERE_WITH_EXPLICIT_FUNCTION(
  95             "PrintSystemWatcherWin_OnObjectSignaled"));
  96
  97     crash_keys::ScopedPrinterInfo crash_key(printer_info_);
  98     DWORD change = 0;
  99     FindNextPrinterChangeNotification(object, &change, NULL, NULL);
 100
 101     if (change != ((PRINTER_CHANGE_PRINTER|PRINTER_CHANGE_JOB) &
 102                   (~PRINTER_CHANGE_FAILED_CONNECTION_PRINTER))) {
 103       // For printer connections, we get spurious change notifications with
 104       // all flags set except PRINTER_CHANGE_FAILED_CONNECTION_PRINTER.
 105       // Ignore these.
 106       if (change & PRINTER_CHANGE_ADD_PRINTER) {
 107         delegate_->OnPrinterAdded();
 108       } else if (change & PRINTER_CHANGE_DELETE_PRINTER) {
 109         delegate_->OnPrinterDeleted();
 110       } else if (change & PRINTER_CHANGE_SET_PRINTER) {
 111         delegate_->OnPrinterChanged();
 112       }
 113       if (change & PRINTER_CHANGE_JOB) {
 114         delegate_->OnJobChanged();
 115       }
 116     }
 117     watcher_.StartWatching(printer_change_.Get(), this);
 118   }
 119
 120   bool GetCurrentPrinterInfo(printing::PrinterBasicInfo* printer_info) {
 121     DCHECK(printer_info);
 122     return InitBasicPrinterInfo(printer_.Get(), printer_info);
 123   }
 124
 125  private:
 126   base::win::ObjectWatcher watcher_;
 127   printing::ScopedPrinterHandle printer_;  // The printer being watched
 128   // Returned by FindFirstPrinterChangeNotifier.
 129   printing::ScopedPrinterChangeHandle printer_change_;
 130   Delegate* delegate_;           // Delegate to notify
 131   bool did_signal_;              // DoneWaiting was called
 132   std::string printer_info_;     // For crash reporting.
 133 };
 134
 135 class PrintServerWatcherWin
 136   : public PrintSystem::PrintServerWatcher,
 137     public PrintSystemWatcherWin::Delegate {
 138  public:
 139   PrintServerWatcherWin() : delegate_(NULL) {}
 140
 141   // PrintSystem::PrintServerWatcher implementation.
 142   virtual bool StartWatching(
 143       PrintSystem::PrintServerWatcher::Delegate* delegate) override{
 144     delegate_ = delegate;
 145     return watcher_.Start(std::string(), this);
 146   }
 147
 148   virtual bool StopWatching() override{
 149     bool ret = watcher_.Stop();
 150     delegate_ = NULL;
 151     return ret;
 152   }
 153
 154   // PrintSystemWatcherWin::Delegate implementation.
 155   virtual void OnPrinterAdded() override {
 156     delegate_->OnPrinterAdded();
 157   }
 158   virtual void OnPrinterDeleted() override {}
 159   virtual void OnPrinterChanged() override {}
 160   virtual void OnJobChanged() override {}
 161
 162  protected:
 163   virtual ~PrintServerWatcherWin() {}
 164
 165  private:
 166   PrintSystem::PrintServerWatcher::Delegate* delegate_;
 167   PrintSystemWatcherWin watcher_;
 168
 169   DISALLOW_COPY_AND_ASSIGN(PrintServerWatcherWin);
 170 };
 171
 172 class PrinterWatcherWin
 173     : public PrintSystem::PrinterWatcher,
 174       public PrintSystemWatcherWin::Delegate {
 175  public:
 176   explicit PrinterWatcherWin(const std::string& printer_name)
 177       : printer_name_(printer_name),
 178         delegate_(NULL) {
 179   }
 180
 181   // PrintSystem::PrinterWatcher implementation.
 182   virtual bool StartWatching(
 183       PrintSystem::PrinterWatcher::Delegate* delegate) override {
 184     delegate_ = delegate;
 185     return watcher_.Start(printer_name_, this);
 186   }
 187
 188   virtual bool StopWatching() override {
 189     bool ret = watcher_.Stop();
 190     delegate_ = NULL;
 191     return ret;
 192   }
 193
 194   virtual bool GetCurrentPrinterInfo(
 195       printing::PrinterBasicInfo* printer_info) override {
 196     return watcher_.GetCurrentPrinterInfo(printer_info);
 197   }
 198
 199   // PrintSystemWatcherWin::Delegate implementation.
 200   virtual void OnPrinterAdded() override {
 201     NOTREACHED();
 202   }
 203   virtual void OnPrinterDeleted() override {
 204     delegate_->OnPrinterDeleted();
 205   }
 206   virtual void OnPrinterChanged() override {
 207     delegate_->OnPrinterChanged();
 208   }
 209   virtual void OnJobChanged() override {
 210     delegate_->OnJobChanged();
 211   }
 212
 213  protected:
 214   virtual ~PrinterWatcherWin() {}
 215
 216  private:
 217   std::string printer_name_;
 218   PrintSystem::PrinterWatcher::Delegate* delegate_;
 219   PrintSystemWatcherWin watcher_;
 220
 221   DISALLOW_COPY_AND_ASSIGN(PrinterWatcherWin);
 222 };
 223
 224 class JobSpoolerWin : public PrintSystem::JobSpooler {
 225  public:
 226   JobSpoolerWin() : core_(new Core) {}
 227
 228   // PrintSystem::JobSpooler implementation.
 229   virtual bool Spool(const std::string& print_ticket,
 230                      const std::string& print_ticket_mime_type,
 231                      const base::FilePath& print_data_file_path,
 232                      const std::string& print_data_mime_type,
 233                      const std::string& printer_name,
 234                      const std::string& job_title,
 235                      const std::vector<std::string>& tags,
 236                      JobSpooler::Delegate* delegate) override {
 237     // TODO(gene): add tags handling.
 238     scoped_refptr<printing::PrintBackend> print_backend(
 239         printing::PrintBackend::CreateInstance(NULL));
 240     crash_keys::ScopedPrinterInfo crash_key(
 241         print_backend->GetPrinterDriverInfo(printer_name));
 242     return core_->Spool(print_ticket, print_ticket_mime_type,
 243                         print_data_file_path, print_data_mime_type,
 244                         printer_name, job_title, delegate);
 245   }
 246
 247  protected:
 248   virtual ~JobSpoolerWin() {}
 249
 250  private:
 251   // We use a Core class because we want a separate RefCountedThreadSafe
 252   // implementation for ServiceUtilityProcessHost::Client.
 253   class Core : public ServiceUtilityProcessHost::Client,
 254                public base::win::ObjectWatcher::Delegate {
 255    public:
 256     Core() : job_id_(-1), delegate_(NULL), saved_dc_(0) {}
 257
 258     ~Core() {}
 259
 260     bool Spool(const std::string& print_ticket,
 261                const std::string& print_ticket_mime_type,
 262                const base::FilePath& print_data_file_path,
 263                const std::string& print_data_mime_type,
 264                const std::string& printer_name,
 265                const std::string& job_title,
 266                JobSpooler::Delegate* delegate) {
 267       if (delegate_) {
 268         // We are already in the process of printing.
 269         NOTREACHED();
 270         return false;
 271       }
 272       base::string16 printer_wide = base::UTF8ToWide(printer_name);
 273       // We only support PDF and XPS documents for now.
 274       if (print_data_mime_type == kContentTypePDF) {
 275         scoped_ptr<DEVMODE, base::FreeDeleter> dev_mode;
 276         if (print_ticket_mime_type == kContentTypeJSON) {
 277           dev_mode = CjtToDevMode(printer_wide, print_ticket);
 278         } else {
 279           DCHECK(print_ticket_mime_type == kContentTypeXML);
 280           dev_mode = printing::XpsTicketToDevMode(printer_wide, print_ticket);
 281         }
 282
 283         if (!dev_mode) {
 284           NOTREACHED();
 285           return false;
 286         }
 287
 288         HDC dc = CreateDC(L"WINSPOOL", printer_wide.c_str(), NULL,
 289                           dev_mode.get());
 290         if (!dc) {
 291           NOTREACHED();
 292           return false;
 293         }
 294         DOCINFO di = {0};
 295         di.cbSize = sizeof(DOCINFO);
 296         base::string16 doc_name = base::UTF8ToUTF16(job_title);
 297         DCHECK(printing::SimplifyDocumentTitle(doc_name) == doc_name);
 298         di.lpszDocName = doc_name.c_str();
 299         job_id_ = StartDoc(dc, &di);
 300         if (job_id_ <= 0)
 301           return false;
 302
 303         printer_dc_.Set(dc);
 304         saved_dc_ = SaveDC(printer_dc_.Get());
 305         print_data_file_path_ = print_data_file_path;
 306         delegate_ = delegate;
 307         RenderPDFPages();
 308       } else if (print_data_mime_type == kContentTypeXPS) {
 309         DCHECK(print_ticket_mime_type == kContentTypeXML);
 310         bool ret = PrintXPSDocument(printer_name,
 311                                     job_title,
 312                                     print_data_file_path,
 313                                     print_ticket);
 314         if (ret)
 315           delegate_ = delegate;
 316         return ret;
 317       } else {
 318         NOTREACHED();
 319         return false;
 320       }
 321       return true;
 322     }
 323
 324     void PreparePageDCForPrinting(HDC, float scale_factor) {
 325       SetGraphicsMode(printer_dc_.Get(), GM_ADVANCED);
 326       // Setup the matrix to translate and scale to the right place. Take in
 327       // account the scale factor.
 328       // Note that the printing output is relative to printable area of
 329       // the page. That is 0,0 is offset by PHYSICALOFFSETX/Y from the page.
 330       int offset_x = ::GetDeviceCaps(printer_dc_.Get(), PHYSICALOFFSETX);
 331       int offset_y = ::GetDeviceCaps(printer_dc_.Get(), PHYSICALOFFSETY);
 332       XFORM xform = {0};
 333       xform.eDx = static_cast<float>(-offset_x);
 334       xform.eDy = static_cast<float>(-offset_y);
 335       xform.eM11 = xform.eM22 = 1.0f / scale_factor;
 336       SetWorldTransform(printer_dc_.Get(), &xform);
 337     }
 338
 339     // ServiceUtilityProcessHost::Client implementation.
 340     virtual void OnRenderPDFPagesToMetafilePageDone(
 341         float scale_factor,
 342         const printing::MetafilePlayer& emf) override {
 343       PreparePageDCForPrinting(printer_dc_.Get(), scale_factor);
 344       ::StartPage(printer_dc_.Get());
 345       emf.SafePlayback(printer_dc_.Get());
 346       ::EndPage(printer_dc_.Get());
 347     }
 348
 349     // ServiceUtilityProcessHost::Client implementation.
 350     virtual void OnRenderPDFPagesToMetafileDone(bool success) override {
 351       PrintJobDone(success);
 352     }
 353
 354     virtual void OnChildDied() override { PrintJobDone(false); }
 355
 356     // base::win::ObjectWatcher::Delegate implementation.
 357     virtual void OnObjectSignaled(HANDLE object) override {
 358       // TODO(vadimt): Remove ScopedTracker below once crbug.com/418183 is
 359       // fixed.
 360       tracked_objects::ScopedTracker tracking_profile(
 361           FROM_HERE_WITH_EXPLICIT_FUNCTION("Core_OnObjectSignaled"));
 362
 363       DCHECK(xps_print_job_);
 364       DCHECK(object == job_progress_event_.Get());
 365       ResetEvent(job_progress_event_.Get());
 366       if (!delegate_)
 367         return;
 368       XPS_JOB_STATUS job_status = {0};
 369       xps_print_job_->GetJobStatus(&job_status);
 370       if ((job_status.completion == XPS_JOB_CANCELLED) ||
 371           (job_status.completion == XPS_JOB_FAILED)) {
 372         delegate_->OnJobSpoolFailed();
 373       } else if (job_status.jobId ||
 374                   (job_status.completion == XPS_JOB_COMPLETED)) {
 375         // Note: In the case of the XPS document being printed to the
 376         // Microsoft XPS Document Writer, it seems to skip spooling the job
 377         // and goes to the completed state without ever assigning a job id.
 378         delegate_->OnJobSpoolSucceeded(job_status.jobId);
 379       } else {
 380         job_progress_watcher_.StopWatching();
 381         job_progress_watcher_.StartWatching(job_progress_event_.Get(), this);
 382       }
 383     }
 384
 385    private:
 386     // Helper class to allow PrintXPSDocument() to have multiple exits.
 387     class PrintJobCanceler {
 388      public:
 389       explicit PrintJobCanceler(
 390           base::win::ScopedComPtr<IXpsPrintJob>* job_ptr)
 391           : job_ptr_(job_ptr) {
 392       }
 393       ~PrintJobCanceler() {
 394         if (job_ptr_ && *job_ptr_) {
 395           (*job_ptr_)->Cancel();
 396           job_ptr_->Release();
 397         }
 398       }
 399
 400       void reset() { job_ptr_ = NULL; }
 401
 402      private:
 403       base::win::ScopedComPtr<IXpsPrintJob>* job_ptr_;
 404
 405       DISALLOW_COPY_AND_ASSIGN(PrintJobCanceler);
 406     };
 407
 408     void PrintJobDone(bool success) {
 409       // If there is no delegate, then there is nothing pending to process.
 410       if (!delegate_)
 411         return;
 412       RestoreDC(printer_dc_.Get(), saved_dc_);
 413       EndDoc(printer_dc_.Get());
 414       if (success) {
 415         delegate_->OnJobSpoolSucceeded(job_id_);
 416       } else {
 417         delegate_->OnJobSpoolFailed();
 418       }
 419       delegate_ = NULL;
 420     }
 421
 422     void RenderPDFPages() {
 423       int printer_dpi = ::GetDeviceCaps(printer_dc_.Get(), LOGPIXELSX);
 424       int dc_width = GetDeviceCaps(printer_dc_.Get(), PHYSICALWIDTH);
 425       int dc_height = GetDeviceCaps(printer_dc_.Get(), PHYSICALHEIGHT);
 426       gfx::Rect render_area(0, 0, dc_width, dc_height);
 427       g_service_process->io_thread()->message_loop_proxy()->PostTask(
 428           FROM_HERE,
 429           base::Bind(&JobSpoolerWin::Core::RenderPDFPagesInSandbox,
 430                      this,
 431                      print_data_file_path_,
 432                      render_area,
 433                      printer_dpi,
 434                      base::MessageLoopProxy::current()));
 435     }
 436
 437     // Called on the service process IO thread.
 438     void RenderPDFPagesInSandbox(const base::FilePath& pdf_path,
 439                                  const gfx::Rect& render_area,
 440                                  int render_dpi,
 441                                  const scoped_refptr<base::MessageLoopProxy>&
 442                                      client_message_loop_proxy) {
 443       DCHECK(g_service_process->io_thread()->message_loop_proxy()->
 444           BelongsToCurrentThread());
 445       scoped_ptr<ServiceUtilityProcessHost> utility_host(
 446           new ServiceUtilityProcessHost(this, client_message_loop_proxy));
 447       // TODO(gene): For now we disabling autorotation for CloudPrinting.
 448       // Landscape/Portrait setting is passed in the print ticket and
 449       // server is generating portrait PDF always.
 450       // We should enable autorotation once server will be able to generate
 451       // PDF that matches paper size and orientation.
 452       if (utility_host->StartRenderPDFPagesToMetafile(
 453               pdf_path,
 454               printing::PdfRenderSettings(render_area, render_dpi, false))) {
 455         // The object will self-destruct when the child process dies.
 456         utility_host.release();
 457       } else {
 458         client_message_loop_proxy->PostTask(
 459             FROM_HERE, base::Bind(&Core::PrintJobDone, this, false));
 460       }
 461     }
 462
 463     bool PrintXPSDocument(const std::string& printer_name,
 464                           const std::string& job_title,
 465                           const base::FilePath& print_data_file_path,
 466                           const std::string& print_ticket) {
 467       if (!printing::XPSPrintModule::Init())
 468         return false;
 469
 470       job_progress_event_.Set(CreateEvent(NULL, TRUE, FALSE, NULL));
 471       if (!job_progress_event_.Get())
 472         return false;
 473
 474       PrintJobCanceler job_canceler(&xps_print_job_);
 475       base::win::ScopedComPtr<IXpsPrintJobStream> doc_stream;
 476       base::win::ScopedComPtr<IXpsPrintJobStream> print_ticket_stream;
 477       if (FAILED(printing::XPSPrintModule::StartXpsPrintJob(
 478               base::UTF8ToWide(printer_name).c_str(),
 479               base::UTF8ToWide(job_title).c_str(),
 480               NULL, job_progress_event_.Get(), NULL, NULL, NULL,
 481               xps_print_job_.Receive(), doc_stream.Receive(),
 482               print_ticket_stream.Receive())))
 483         return false;
 484
 485       ULONG print_bytes_written = 0;
 486       if (FAILED(print_ticket_stream->Write(print_ticket.c_str(),
 487                                             print_ticket.length(),
 488                                             &print_bytes_written)))
 489         return false;
 490       DCHECK_EQ(print_ticket.length(), print_bytes_written);
 491       if (FAILED(print_ticket_stream->Close()))
 492         return false;
 493
 494       std::string document_data;
 495       base::ReadFileToString(print_data_file_path, &document_data);
 496       ULONG doc_bytes_written = 0;
 497       if (FAILED(doc_stream->Write(document_data.c_str(),
 498                                     document_data.length(),
 499                                     &doc_bytes_written)))
 500         return false;
 501       DCHECK_EQ(document_data.length(), doc_bytes_written);
 502       if (FAILED(doc_stream->Close()))
 503         return false;
 504
 505       job_progress_watcher_.StartWatching(job_progress_event_.Get(), this);
 506       job_canceler.reset();
 507       return true;
 508     }
 509
 510     PlatformJobId job_id_;
 511     PrintSystem::JobSpooler::Delegate* delegate_;
 512     int saved_dc_;
 513     base::win::ScopedCreateDC printer_dc_;
 514     base::FilePath print_data_file_path_;
 515     base::win::ScopedHandle job_progress_event_;
 516     base::win::ObjectWatcher job_progress_watcher_;
 517     base::win::ScopedComPtr<IXpsPrintJob> xps_print_job_;
 518
 519     DISALLOW_COPY_AND_ASSIGN(Core);
 520   };
 521   scoped_refptr<Core> core_;
 522
 523   DISALLOW_COPY_AND_ASSIGN(JobSpoolerWin);
 524 };
 525
 526 // A helper class to handle the response from the utility process to the
 527 // request to fetch printer capabilities and defaults.
 528 class PrinterCapsHandler : public ServiceUtilityProcessHost::Client {
 529  public:
 530   PrinterCapsHandler(
 531       const std::string& printer_name,
 532       const PrintSystem::PrinterCapsAndDefaultsCallback& callback)
 533           : printer_name_(printer_name), callback_(callback) {
 534   }
 535
 536   // ServiceUtilityProcessHost::Client implementation.
 537   virtual void OnChildDied() override {
 538     OnGetPrinterCapsAndDefaults(false, printer_name_,
 539                                 printing::PrinterCapsAndDefaults());
 540   }
 541
 542   virtual void OnGetPrinterCapsAndDefaults(
 543       bool succeeded,
 544       const std::string& printer_name,
 545       const printing::PrinterCapsAndDefaults& caps_and_defaults) override {
 546     callback_.Run(succeeded, printer_name, caps_and_defaults);
 547     callback_.Reset();
 548     Release();
 549   }
 550
 551   virtual void OnGetPrinterSemanticCapsAndDefaults(
 552       bool succeeded,
 553       const std::string& printer_name,
 554       const printing::PrinterSemanticCapsAndDefaults& semantic_info) override {
 555     printing::PrinterCapsAndDefaults printer_info;
 556     if (succeeded) {
 557       printer_info.caps_mime_type = kContentTypeJSON;
 558       scoped_ptr<base::DictionaryValue> description(
 559           PrinterSemanticCapsAndDefaultsToCdd(semantic_info));
 560       if (description) {
 561         base::JSONWriter::WriteWithOptions(
 562             description.get(), base::JSONWriter::OPTIONS_PRETTY_PRINT,
 563             &printer_info.printer_capabilities);
 564       }
 565     }
 566     callback_.Run(succeeded, printer_name, printer_info);
 567     callback_.Reset();
 568     Release();
 569   }
 570
 571   void StartGetPrinterCapsAndDefaults() {
 572     g_service_process->io_thread()->message_loop_proxy()->PostTask(
 573         FROM_HERE,
 574         base::Bind(&PrinterCapsHandler::GetPrinterCapsAndDefaultsImpl, this,
 575                     base::MessageLoopProxy::current()));
 576   }
 577
 578   void StartGetPrinterSemanticCapsAndDefaults() {
 579     g_service_process->io_thread()->message_loop_proxy()->PostTask(
 580         FROM_HERE,
 581         base::Bind(&PrinterCapsHandler::GetPrinterSemanticCapsAndDefaultsImpl,
 582                    this, base::MessageLoopProxy::current()));
 583   }
 584
 585  private:
 586   void GetPrinterCapsAndDefaultsImpl(
 587       const scoped_refptr<base::MessageLoopProxy>&
 588           client_message_loop_proxy) {
 589     DCHECK(g_service_process->io_thread()->message_loop_proxy()->
 590         BelongsToCurrentThread());
 591     scoped_ptr<ServiceUtilityProcessHost> utility_host(
 592         new ServiceUtilityProcessHost(this, client_message_loop_proxy));
 593     if (utility_host->StartGetPrinterCapsAndDefaults(printer_name_)) {
 594       // The object will self-destruct when the child process dies.
 595       utility_host.release();
 596     } else {
 597       client_message_loop_proxy->PostTask(
 598           FROM_HERE,
 599           base::Bind(&PrinterCapsHandler::OnChildDied, this));
 600     }
 601   }
 602
 603   void GetPrinterSemanticCapsAndDefaultsImpl(
 604       const scoped_refptr<base::MessageLoopProxy>&
 605           client_message_loop_proxy) {
 606     DCHECK(g_service_process->io_thread()->message_loop_proxy()->
 607         BelongsToCurrentThread());
 608     scoped_ptr<ServiceUtilityProcessHost> utility_host(
 609         new ServiceUtilityProcessHost(this, client_message_loop_proxy));
 610     if (utility_host->StartGetPrinterSemanticCapsAndDefaults(printer_name_)) {
 611       // The object will self-destruct when the child process dies.
 612       utility_host.release();
 613     } else {
 614       client_message_loop_proxy->PostTask(
 615           FROM_HERE,
 616           base::Bind(&PrinterCapsHandler::OnChildDied, this));
 617     }
 618   }
 619
 620   std::string printer_name_;
 621   PrintSystem::PrinterCapsAndDefaultsCallback callback_;
 622 };
 623
 624 class PrintSystemWin : public PrintSystem {
 625  public:
 626   PrintSystemWin();
 627
 628   // PrintSystem implementation.
 629   virtual PrintSystemResult Init() override;
 630   virtual PrintSystem::PrintSystemResult EnumeratePrinters(
 631       printing::PrinterList* printer_list) override;
 632   virtual void GetPrinterCapsAndDefaults(
 633       const std::string& printer_name,
 634       const PrinterCapsAndDefaultsCallback& callback) override;
 635   virtual bool IsValidPrinter(const std::string& printer_name) override;
 636   virtual bool ValidatePrintTicket(
 637       const std::string& printer_name,
 638       const std::string& print_ticket_data,
 639       const std::string& print_ticket_data_mime_type) override;
 640   virtual bool GetJobDetails(const std::string& printer_name,
 641                              PlatformJobId job_id,
 642                              PrintJobDetails *job_details) override;
 643   virtual PrintSystem::PrintServerWatcher* CreatePrintServerWatcher() override;
 644   virtual PrintSystem::PrinterWatcher* CreatePrinterWatcher(
 645       const std::string& printer_name) override;
 646   virtual PrintSystem::JobSpooler* CreateJobSpooler() override;
 647   virtual bool UseCddAndCjt() override;
 648   virtual std::string GetSupportedMimeTypes() override;
 649
 650  private:
 651   std::string PrintSystemWin::GetPrinterDriverInfo(
 652       const std::string& printer_name) const;
 653
 654   scoped_refptr<printing::PrintBackend> print_backend_;
 655   bool use_cdd_;
 656   DISALLOW_COPY_AND_ASSIGN(PrintSystemWin);
 657 };
 658
 659 PrintSystemWin::PrintSystemWin() : use_cdd_(true) {
 660   print_backend_ = printing::PrintBackend::CreateInstance(NULL);
 661 }
 662
 663 PrintSystem::PrintSystemResult PrintSystemWin::Init() {
 664   use_cdd_ = !CommandLine::ForCurrentProcess()->HasSwitch(
 665       switches::kEnableCloudPrintXps);
 666
 667   if (!use_cdd_)
 668     use_cdd_ = !printing::XPSModule::Init();
 669
 670   if (!use_cdd_) {
 671     HPTPROVIDER provider = NULL;
 672     HRESULT hr = printing::XPSModule::OpenProvider(L"", 1, &provider);
 673     if (provider)
 674       printing::XPSModule::CloseProvider(provider);
 675     // Use cdd if error is different from expected.
 676     use_cdd_ = (hr != HRESULT_FROM_WIN32(ERROR_INVALID_PRINTER_NAME));
 677   }
 678
 679   return PrintSystemResult(true, std::string());
 680 }
 681
 682 PrintSystem::PrintSystemResult PrintSystemWin::EnumeratePrinters(
 683     printing::PrinterList* printer_list) {
 684   bool ret = print_backend_->EnumeratePrinters(printer_list);
 685   return PrintSystemResult(ret, std::string());
 686 }
 687
 688 void PrintSystemWin::GetPrinterCapsAndDefaults(
 689     const std::string& printer_name,
 690     const PrinterCapsAndDefaultsCallback& callback) {
 691   // Launch as child process to retrieve the capabilities and defaults because
 692   // this involves invoking a printer driver DLL and crashes have been known to
 693   // occur.
 694   PrinterCapsHandler* handler = new PrinterCapsHandler(printer_name, callback);
 695   handler->AddRef();
 696   if (use_cdd_)
 697     handler->StartGetPrinterSemanticCapsAndDefaults();
 698   else
 699     handler->StartGetPrinterCapsAndDefaults();
 700 }
 701
 702 bool PrintSystemWin::IsValidPrinter(const std::string& printer_name) {
 703   return print_backend_->IsValidPrinter(printer_name);
 704 }
 705
 706 bool PrintSystemWin::ValidatePrintTicket(
 707     const std::string& printer_name,
 708     const std::string& print_ticket_data,
 709     const std::string& print_ticket_data_mime_type) {
 710   crash_keys::ScopedPrinterInfo crash_key(GetPrinterDriverInfo(printer_name));
 711
 712   if (use_cdd_) {
 713     return print_ticket_data_mime_type == kContentTypeJSON &&
 714            IsValidCjt(print_ticket_data);
 715   }
 716   DCHECK(print_ticket_data_mime_type == kContentTypeXML);
 717
 718   printing::ScopedXPSInitializer xps_initializer;
 719   if (!xps_initializer.initialized()) {
 720     // TODO(sanjeevr): Handle legacy proxy case (with no prntvpt.dll)
 721     return false;
 722   }
 723   bool ret = false;
 724   HPTPROVIDER provider = NULL;
 725   printing::XPSModule::OpenProvider(base::UTF8ToWide(printer_name), 1,
 726                                     &provider);
 727   if (provider) {
 728     base::win::ScopedComPtr<IStream> print_ticket_stream;
 729     CreateStreamOnHGlobal(NULL, TRUE, print_ticket_stream.Receive());
 730     ULONG bytes_written = 0;
 731     print_ticket_stream->Write(print_ticket_data.c_str(),
 732                                print_ticket_data.length(),
 733                                &bytes_written);
 734     DCHECK(bytes_written == print_ticket_data.length());
 735     LARGE_INTEGER pos = {0};
 736     ULARGE_INTEGER new_pos = {0};
 737     print_ticket_stream->Seek(pos, STREAM_SEEK_SET, &new_pos);
 738     base::win::ScopedBstr error;
 739     base::win::ScopedComPtr<IStream> result_ticket_stream;
 740     CreateStreamOnHGlobal(NULL, TRUE, result_ticket_stream.Receive());
 741     ret = SUCCEEDED(printing::XPSModule::MergeAndValidatePrintTicket(
 742         provider,
 743         print_ticket_stream.get(),
 744         NULL,
 745         kPTJobScope,
 746         result_ticket_stream.get(),
 747         error.Receive()));
 748     printing::XPSModule::CloseProvider(provider);
 749   }
 750   return ret;
 751 }
 752
 753 bool PrintSystemWin::GetJobDetails(const std::string& printer_name,
 754                                    PlatformJobId job_id,
 755                                    PrintJobDetails *job_details) {
 756   crash_keys::ScopedPrinterInfo crash_key(
 757       print_backend_->GetPrinterDriverInfo(printer_name));
 758   DCHECK(job_details);
 759   printing::ScopedPrinterHandle printer_handle;
 760   std::wstring printer_name_wide = base::UTF8ToWide(printer_name);
 761   printer_handle.OpenPrinter(printer_name_wide.c_str());
 762   DCHECK(printer_handle.IsValid());
 763   bool ret = false;
 764   if (printer_handle.IsValid()) {
 765     DWORD bytes_needed = 0;
 766     GetJob(printer_handle.Get(), job_id, 1, NULL, 0, &bytes_needed);
 767     DWORD last_error = GetLastError();
 768     if (ERROR_INVALID_PARAMETER != last_error) {
 769       // ERROR_INVALID_PARAMETER normally means that the job id is not valid.
 770       DCHECK(last_error == ERROR_INSUFFICIENT_BUFFER);
 771       scoped_ptr<BYTE[]> job_info_buffer(new BYTE[bytes_needed]);
 772       if (GetJob(printer_handle.Get(), job_id, 1, job_info_buffer.get(),
 773                  bytes_needed, &bytes_needed)) {
 774         JOB_INFO_1 *job_info =
 775             reinterpret_cast<JOB_INFO_1 *>(job_info_buffer.get());
 776         if (job_info->pStatus) {
 777           base::WideToUTF8(job_info->pStatus, wcslen(job_info->pStatus),
 778                            &job_details->status_message);
 779         }
 780         job_details->platform_status_flags = job_info->Status;
 781         if ((job_info->Status & JOB_STATUS_COMPLETE) ||
 782             (job_info->Status & JOB_STATUS_PRINTED)) {
 783           job_details->status = PRINT_JOB_STATUS_COMPLETED;
 784         } else if (job_info->Status & JOB_STATUS_ERROR) {
 785           job_details->status = PRINT_JOB_STATUS_ERROR;
 786         } else {
 787           job_details->status = PRINT_JOB_STATUS_IN_PROGRESS;
 788         }
 789         job_details->total_pages = job_info->TotalPages;
 790         job_details->pages_printed = job_info->PagesPrinted;
 791         ret = true;
 792       }
 793     }
 794   }
 795   return ret;
 796 }
 797
 798 PrintSystem::PrintServerWatcher*
 799 PrintSystemWin::CreatePrintServerWatcher() {
 800   return new PrintServerWatcherWin();
 801 }
 802
 803 PrintSystem::PrinterWatcher* PrintSystemWin::CreatePrinterWatcher(
 804     const std::string& printer_name) {
 805   DCHECK(!printer_name.empty());
 806   return new PrinterWatcherWin(printer_name);
 807 }
 808
 809 PrintSystem::JobSpooler* PrintSystemWin::CreateJobSpooler() {
 810   return new JobSpoolerWin();
 811 }
 812
 813 bool PrintSystemWin::UseCddAndCjt() {
 814   return use_cdd_;
 815 }
 816
 817 std::string PrintSystemWin::GetSupportedMimeTypes() {
 818   std::string result;
 819   if (!use_cdd_) {
 820     result = kContentTypeXPS;
 821     result += ",";
 822   }
 823   result += kContentTypePDF;
 824   return result;
 825 }
 826
 827 std::string PrintSystemWin::GetPrinterDriverInfo(
 828     const std::string& printer_name) const {
 829   return print_backend_->GetPrinterDriverInfo(printer_name);
 830 }
 831
 832 }  // namespace
 833
 834 scoped_refptr<PrintSystem> PrintSystem::CreateInstance(
 835     const base::DictionaryValue* print_system_settings) {
 836   return new PrintSystemWin;
 837 }
 838
 839 }  // namespace cloud_print