Adds initial telemetry probes

extensions/firefox/components/PdfStreamConverter.js

@@ -16,7 +16,7 @@
  */
 /* jshint esnext:true */
 /* globals Components, Services, XPCOMUtils, NetUtil, PrivateBrowsingUtils,
-           dump, NetworkManager */
+           dump, NetworkManager, PdfJsTelemetry */
 
 'use strict';
 
@@ -42,6 +42,9 @@ Cu.import('resource://pdf.js/network.js');
 XPCOMUtils.defineLazyModuleGetter(this, 'PrivateBrowsingUtils',
   'resource://gre/modules/PrivateBrowsingUtils.jsm');
 
+XPCOMUtils.defineLazyModuleGetter(this, 'PdfJsTelemetry',
+  'resource://pdf.js/PdfJsTelemetry.jsm');
+
 var Svc = {};
 XPCOMUtils.defineLazyServiceGetter(Svc, 'mime',
                                    '@mozilla.org/mime;1',
@@ -194,6 +197,12 @@ PdfDataListener.prototype = {
 function ChromeActions(domWindow, contentDispositionFilename) {
   this.domWindow = domWindow;
   this.contentDispositionFilename = contentDispositionFilename;
+  this.telemetryState = {
+    documentInfo: false,
+    firstPageInfo: false,
+    streamTypesUsed: [],
+    startAt: Date.now()
+  };
 }
 
 ChromeActions.prototype = {
@@ -321,12 +330,49 @@ ChromeActions.prototype = {
   supportsDocumentColors: function() {
     return getBoolPref('browser.display.use_document_colors', true);
   },
+  reportTelemetry: function (data) {
+    var probeInfo = JSON.parse(data);
+    switch (probeInfo.type) {
+      case 'documentInfo':
+        if (!this.telemetryState.documentInfo) {
+          PdfJsTelemetry.onDocumentVersion(probeInfo.version | 0);
+          PdfJsTelemetry.onDocumentGenerator(probeInfo.generator | 0);
+          if (probeInfo.formType) {
+            PdfJsTelemetry.onForm(probeInfo.formType === 'acroform');
+          }
+          this.telemetryState.documentInfo = true;
+        }
+        break;
+      case 'pageInfo':
+        if (!this.telemetryState.firstPageInfo) {
+          var duration = Date.now() - this.telemetryState.startAt;
+          PdfJsTelemetry.onTimeToView(duration);
+          this.telemetryState.firstPageInfo = true;
+        }
+        break;
+      case 'streamInfo':
+        if (!Array.isArray(probeInfo.streamTypes)) {
+          break;
+        }
+        for (var i = 0; i < probeInfo.streamTypes.length; i++) {
+          var streamTypeId = probeInfo.streamTypes[i] | 0;
+          if (streamTypeId >= 0 && streamTypeId < 10 &&
+              !this.telemetryState.streamTypesUsed[streamTypeId]) {
+            PdfJsTelemetry.onStreamType(streamTypeId);
+            this.telemetryState.streamTypesUsed[streamTypeId] = true;
+          }
+        }
+        break;
+    }
+  },
   fallback: function(url, sendResponse) {
     var self = this;
     var domWindow = this.domWindow;
     var strings = getLocalizedStrings('chrome.properties');
     var message = getLocalizedString(strings, 'unsupported_feature');
 
+    PdfJsTelemetry.onFallback();
+
     var notificationBox = null;
     try {
       // Based on MDN's "Working with windows in chrome code"
@@ -730,6 +776,9 @@ PdfStreamConverter.prototype = {
                                  false);
     }
 
+    PdfJsTelemetry.onViewerIsUsed();
+    PdfJsTelemetry.onDocumentSize(aRequest.contentLength);
+
     if (!rangeRequest) {
       // Creating storage for PDF data
       var contentLength = aRequest.contentLength;

extensions/firefox/content/PdfJsTelemetry-addon.jsm

@@ -0,0 +1,72 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+/* Copyright 2013 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* jshint esnext:true */
+
+'use strict';
+
+this.EXPORTED_SYMBOLS = ['PdfJsTelemetry'];
+
+const Cu = Components.utils;
+Cu.import('resource://gre/modules/Services.jsm');
+
+const ADDON_ID = "[email protected]";
+
+var Telemetry = Services.telemetry;
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_USED", 1, 2, 3, Telemetry.HISTOGRAM_BOOLEAN);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_FALLBACK_SHOWN", 1, 2, 3, Telemetry.HISTOGRAM_BOOLEAN);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_VERSION", 1, 10, 11, Telemetry.HISTOGRAM_LINEAR);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_GENERATOR", 1, 25, 26, Telemetry.HISTOGRAM_LINEAR);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_SIZE_KB", 2, 64 * 1024, 20, Telemetry.HISTOGRAM_EXPONENTIAL);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_FORM", 1, 2, 3, Telemetry.HISTOGRAM_BOOLEAN);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_STREAM_TYPES", 1, 9, 10, Telemetry.HISTOGRAM_LINEAR);
+Telemetry.registerAddonHistogram(ADDON_ID, "PDF_VIEWER_TIME_TO_VIEW_MS", 1, 10000, 50, Telemetry.HISTOGRAM_EXPONENTIAL);
+
+
+this.PdfJsTelemetry = {
+  onViewerIsUsed: function () {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_USED");
+    histogram.add(true);
+  },
+  onFallback: function () {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_FALLBACK_SHOWN");
+    histogram.add(true);
+  },
+  onDocumentSize: function (size) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_SIZE_KB");
+    histogram.add(size / 1024);
+  },
+  onDocumentVersion: function (versionId) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_VERSION");
+    histogram.add(versionId);
+  },
+  onDocumentGenerator: function (generatorId) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_DOCUMENT_GENERATOR");
+    histogram.add(generatorId);
+  },
+  onForm: function (isAcroform) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_FORM");
+    histogram.add(isAcroform);
+  },
+  onStreamType: function (streamTypeId) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_STREAM_TYPES");
+    histogram.add(streamTypeId);
+  },
+  onTimeToView: function (ms) {
+    let histogram = Telemetry.getAddonHistogram(ADDON_ID, "PDF_VIEWER_TIME_TO_VIEW_MS");
+    histogram.add(ms);
+  }
+};

extensions/firefox/content/PdfJsTelemetry.jsm

@@ -0,0 +1,59 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+/* Copyright 2013 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* jshint esnext:true */
+
+'use strict';
+
+this.EXPORTED_SYMBOLS = ['PdfJsTelemetry'];
+
+const Cu = Components.utils;
+Cu.import('resource://gre/modules/Services.jsm');
+
+this.PdfJsTelemetry = {
+  onViewerIsUsed: function () {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_USED");
+    histogram.add(true);
+  },
+  onFallback: function () {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_FALLBACK_SHOWN");
+    histogram.add(true);
+  },
+  onDocumentSize: function (size) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_DOCUMENT_SIZE_KB");
+    histogram.add(size / 1024);
+  },
+  onDocumentVersion: function (versionId) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_DOCUMENT_VERSION");
+    histogram.add(versionId);
+  },
+  onDocumentGenerator: function (generatorId) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_DOCUMENT_GENERATOR");
+    histogram.add(generatorId);
+  },
+  onForm: function (isAcroform) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_FORM");
+    histogram.add(isAcroform);
+  },
+  onStreamType: function (streamTypeId) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_STREAM_TYPES");
+    histogram.add(streamTypeId);
+  },
+  onTimeToView: function (ms) {
+    let histogram = Services.telemetry.getHistogramById("PDF_VIEWER_TIME_TO_VIEW_MS");
+    histogram.add(ms);
+  }
+};

make.js

@@ -417,6 +417,9 @@ target.firefox = function() {
   cp(FIREFOX_CONTENT_DIR + 'PdfJs-stub.jsm',
      FIREFOX_BUILD_CONTENT_DIR + 'PdfJs.jsm');
 
+  cp(FIREFOX_CONTENT_DIR + 'PdfJsTelemetry-addon.jsm',
+     FIREFOX_BUILD_CONTENT_DIR + 'PdfJsTelemetry.jsm');
+
   // Copy extension files
   cd(FIREFOX_EXTENSION_DIR);
   cp('-R', FIREFOX_EXTENSION_FILES_TO_COPY, ROOT_DIR + FIREFOX_BUILD_DIR);
@@ -528,6 +531,7 @@ target.mozcentral = function() {
   mkdir('-p', MOZCENTRAL_CONTENT_DIR + '/web');
 
   cp(FIREFOX_CONTENT_DIR + 'PdfJs.jsm', MOZCENTRAL_CONTENT_DIR);
+  cp(FIREFOX_CONTENT_DIR + 'PdfJsTelemetry.jsm', MOZCENTRAL_CONTENT_DIR);
 
   // Copy extension files
   cd('extensions/firefox');

src/core/core.js

@@ -326,7 +326,22 @@ var PDFDocument = (function PDFDocumentClosure() {
   PDFDocument.prototype = {
     parse: function PDFDocument_parse(recoveryMode) {
       this.setup(recoveryMode);
-      this.acroForm = this.catalog.catDict.get('AcroForm');
+      try {
+        // checking if AcroForm is present
+        this.acroForm = this.catalog.catDict.get('AcroForm');
+        if (this.acroForm) {
+          this.xfa = this.acroForm.get('XFA');
+          var fields = this.acroForm.get('Fields');
+          if ((!fields || !isArray(fields) || fields.length === 0) &&
+              !this.xfa) {
+            // no fields and no XFA -- not a form (?)
+            this.acroForm = null;
+          }
+        }
+      } catch (ex) {
+        info('Something wrong with AcroForm entry');
+        this.acroForm = null;
+      }
     },
 
     get linearization() {
@@ -438,7 +453,8 @@ var PDFDocument = (function PDFDocumentClosure() {
     get documentInfo() {
       var docInfo = {
         PDFFormatVersion: this.pdfFormatVersion,
-        IsAcroFormPresent: !!this.acroForm
+        IsAcroFormPresent: !!this.acroForm,
+        IsXFAPresent: !!this.xfa
       };
       var infoDict;
       try {

web/viewer.js

@@ -1020,6 +1020,34 @@ var PDFView = {
         console.warn('Warning: AcroForm/XFA is not supported');
         PDFView.fallback();
       }
+
+//#if (FIREFOX || MOZCENTRAL)
+//    var versionId = String(info.PDFFormatVersion).slice(-1) | 0;
+//    var generatorId = 0;
+//    var KNOWN_GENERATORS = ["acrobat distiller", "acrobat pdfwritter",
+//     "adobe livecycle", "adobe pdf library", "adobe photoshop", "ghostscript",
+//     "tcpdf", "cairo", "dvipdfm", "dvips", "pdftex", "pdfkit", "itext",
+//     "prince", "quarkxpress", "mac os x", "microsoft", "openoffice", "oracle",
+//     "luradocument", "pdf-xchange", "antenna house", "aspose.cells", "fpdf"];
+//    var generatorId = 0;
+//    if (info.Producer) {
+//      KNOWN_GENERATORS.some(function (generator, s, i) {
+//        if (generator.indexOf(s) < 0) {
+//          return false;
+//        }
+//        generatorId = i + 1;
+//        return true;
+//      }.bind(null, info.Producer.toLowerCase()));
+//    }
+//    var formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ?
+//                   'xfa' : 'acroform';
+//    FirefoxCom.request('reportTelemetry', JSON.stringify({
+//      type: 'documentInfo',
+//      version: versionId,
+//      generator: generatorId,
+//      formType: formType
+//    }));
+//#endif
     });
   },
 
@@ -1928,6 +1956,12 @@ var PageView = function pageView(container, id, scale,
       });
       div.dispatchEvent(event);
 
+//#if (FIREFOX || MOZCENTRAL)
+//    FirefoxCom.request('reportTelemetry', JSON.stringify({
+//      type: 'pageInfo'
+//    }));
+//    // TODO add stream types report here
+//#endif
       callback();
     }