diff options
Diffstat (limited to 'browser/base/content/content.js')
| -rw-r--r-- | browser/base/content/content.js | 1503 |
1 files changed, 1503 insertions, 0 deletions
diff --git a/browser/base/content/content.js b/browser/base/content/content.js new file mode 100644 index 000000000..658d2014d --- /dev/null +++ b/browser/base/content/content.js @@ -0,0 +1,1503 @@ +/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* This content script should work in any browser or iframe and should not + * depend on the frame being contained in tabbrowser. */ + +var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components; + +Cu.import("resource://gre/modules/XPCOMUtils.jsm"); +Cu.import("resource://gre/modules/Services.jsm"); +Cu.import("resource:///modules/ContentWebRTC.jsm"); +Cu.import("resource:///modules/ContentObservers.jsm"); +Cu.import("resource://gre/modules/InlineSpellChecker.jsm"); +Cu.import("resource://gre/modules/InlineSpellCheckerContent.jsm"); +Cu.import("resource://gre/modules/Task.jsm"); + +XPCOMUtils.defineLazyModuleGetter(this, "E10SUtils", + "resource:///modules/E10SUtils.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils", + "resource://gre/modules/BrowserUtils.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "ContentLinkHandler", + "resource:///modules/ContentLinkHandler.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent", + "resource://gre/modules/LoginManagerContent.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "LoginFormFactory", + "resource://gre/modules/LoginManagerContent.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "InsecurePasswordUtils", + "resource://gre/modules/InsecurePasswordUtils.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PluginContent", + "resource:///modules/PluginContent.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils", + "resource://gre/modules/PrivateBrowsingUtils.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "FormSubmitObserver", + "resource:///modules/FormSubmitObserver.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PageMetadata", + "resource://gre/modules/PageMetadata.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PlacesUIUtils", + "resource:///modules/PlacesUIUtils.jsm"); +XPCOMUtils.defineLazyGetter(this, "PageMenuChild", function() { + let tmp = {}; + Cu.import("resource://gre/modules/PageMenu.jsm", tmp); + return new tmp.PageMenuChild(); +}); +XPCOMUtils.defineLazyModuleGetter(this, "Feeds", + "resource:///modules/Feeds.jsm"); + +Cu.importGlobalProperties(["URL"]); + +// TabChildGlobal +var global = this; + +// Load the form validation popup handler +var formSubmitObserver = new FormSubmitObserver(content, this); + +addMessageListener("ContextMenu:DoCustomCommand", function(message) { + E10SUtils.wrapHandlingUserInput( + content, message.data.handlingUserInput, + () => PageMenuChild.executeMenu(message.data.generatedItemId)); +}); + +addMessageListener("RemoteLogins:fillForm", function(message) { + LoginManagerContent.receiveMessage(message, content); +}); +addEventListener("DOMFormHasPassword", function(event) { + LoginManagerContent.onDOMFormHasPassword(event, content); + let formLike = LoginFormFactory.createFromForm(event.target); + InsecurePasswordUtils.reportInsecurePasswords(formLike); +}); +addEventListener("DOMInputPasswordAdded", function(event) { + LoginManagerContent.onDOMInputPasswordAdded(event, content); + let formLike = LoginFormFactory.createFromField(event.target); + InsecurePasswordUtils.reportInsecurePasswords(formLike); +}); +addEventListener("pageshow", function(event) { + LoginManagerContent.onPageShow(event, content); +}); +addEventListener("DOMAutoComplete", function(event) { + LoginManagerContent.onUsernameInput(event); +}); +addEventListener("blur", function(event) { + LoginManagerContent.onUsernameInput(event); +}); + +var handleContentContextMenu = function (event) { + let defaultPrevented = event.defaultPrevented; + if (!Services.prefs.getBoolPref("dom.event.contextmenu.enabled")) { + let plugin = null; + try { + plugin = event.target.QueryInterface(Ci.nsIObjectLoadingContent); + } catch (e) {} + if (plugin && plugin.displayedType == Ci.nsIObjectLoadingContent.TYPE_PLUGIN) { + // Don't open a context menu for plugins. + return; + } + + defaultPrevented = false; + } + + if (defaultPrevented) + return; + + let addonInfo = {}; + let subject = { + event: event, + addonInfo: addonInfo, + }; + subject.wrappedJSObject = subject; + Services.obs.notifyObservers(subject, "content-contextmenu", null); + + let doc = event.target.ownerDocument; + let docLocation = doc.mozDocumentURIIfNotForErrorPages; + docLocation = docLocation && docLocation.spec; + let charSet = doc.characterSet; + let baseURI = doc.baseURI; + let referrer = doc.referrer; + let referrerPolicy = doc.referrerPolicy; + let frameOuterWindowID = doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIDOMWindowUtils) + .outerWindowID; + let loginFillInfo = LoginManagerContent.getFieldContext(event.target); + + // The same-origin check will be done in nsContextMenu.openLinkInTab. + let parentAllowsMixedContent = !!docShell.mixedContentChannel; + + // get referrer attribute from clicked link and parse it + // if per element referrer is enabled, the element referrer overrules + // the document wide referrer + if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer")) { + let referrerAttrValue = Services.netUtils.parseAttributePolicyString(event.target. + getAttribute("referrerpolicy")); + if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) { + referrerPolicy = referrerAttrValue; + } + } + + let disableSetDesktopBg = null; + // Media related cache info parent needs for saving + let contentType = null; + let contentDisposition = null; + if (event.target.nodeType == Ci.nsIDOMNode.ELEMENT_NODE && + event.target instanceof Ci.nsIImageLoadingContent && + event.target.currentURI) { + disableSetDesktopBg = disableSetDesktopBackground(event.target); + + try { + let imageCache = + Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools) + .getImgCacheForDocument(doc); + let props = + imageCache.findEntryProperties(event.target.currentURI, doc); + try { + contentType = props.get("type", Ci.nsISupportsCString).data; + } catch (e) {} + try { + contentDisposition = + props.get("content-disposition", Ci.nsISupportsCString).data; + } catch (e) {} + } catch (e) {} + } + + let selectionInfo = BrowserUtils.getSelectionDetails(content); + + let loadContext = docShell.QueryInterface(Ci.nsILoadContext); + let userContextId = loadContext.originAttributes.userContextId; + + if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) { + let editFlags = SpellCheckHelper.isEditable(event.target, content); + let spellInfo; + if (editFlags & + (SpellCheckHelper.EDITABLE | SpellCheckHelper.CONTENTEDITABLE)) { + spellInfo = + InlineSpellCheckerContent.initContextMenu(event, editFlags, this); + } + + // Set the event target first as the copy image command needs it to + // determine what was context-clicked on. Then, update the state of the + // commands on the context menu. + docShell.contentViewer.QueryInterface(Ci.nsIContentViewerEdit) + .setCommandNode(event.target); + event.target.ownerGlobal.updateCommands("contentcontextmenu"); + + let customMenuItems = PageMenuChild.build(event.target); + let principal = doc.nodePrincipal; + sendRpcMessage("contextmenu", + { editFlags, spellInfo, customMenuItems, addonInfo, + principal, docLocation, charSet, baseURI, referrer, + referrerPolicy, contentType, contentDisposition, + frameOuterWindowID, selectionInfo, disableSetDesktopBg, + loginFillInfo, parentAllowsMixedContent, userContextId }, + { event, popupNode: event.target }); + } + else { + // Break out to the parent window and pass the add-on info along + let browser = docShell.chromeEventHandler; + let mainWin = browser.ownerGlobal; + mainWin.gContextMenuContentData = { + isRemote: false, + event: event, + popupNode: event.target, + browser: browser, + addonInfo: addonInfo, + documentURIObject: doc.documentURIObject, + docLocation: docLocation, + charSet: charSet, + referrer: referrer, + referrerPolicy: referrerPolicy, + contentType: contentType, + contentDisposition: contentDisposition, + selectionInfo: selectionInfo, + disableSetDesktopBackground: disableSetDesktopBg, + loginFillInfo, + parentAllowsMixedContent, + userContextId, + }; + } +} + +Cc["@mozilla.org/eventlistenerservice;1"] + .getService(Ci.nsIEventListenerService) + .addSystemEventListener(global, "contextmenu", handleContentContextMenu, false); + +// Values for telemtery bins: see TLS_ERROR_REPORT_UI in Histograms.json +const TLS_ERROR_REPORT_TELEMETRY_UI_SHOWN = 0; +const TLS_ERROR_REPORT_TELEMETRY_EXPANDED = 1; +const TLS_ERROR_REPORT_TELEMETRY_SUCCESS = 6; +const TLS_ERROR_REPORT_TELEMETRY_FAILURE = 7; + +const SEC_ERROR_BASE = Ci.nsINSSErrorsService.NSS_SEC_ERROR_BASE; +const MOZILLA_PKIX_ERROR_BASE = Ci.nsINSSErrorsService.MOZILLA_PKIX_ERROR_BASE; + +const SEC_ERROR_EXPIRED_CERTIFICATE = SEC_ERROR_BASE + 11; +const SEC_ERROR_UNKNOWN_ISSUER = SEC_ERROR_BASE + 13; +const SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE = SEC_ERROR_BASE + 30; +const SEC_ERROR_OCSP_FUTURE_RESPONSE = SEC_ERROR_BASE + 131; +const SEC_ERROR_OCSP_OLD_RESPONSE = SEC_ERROR_BASE + 132; +const MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE = MOZILLA_PKIX_ERROR_BASE + 5; +const MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE = MOZILLA_PKIX_ERROR_BASE + 6; + +const PREF_BLOCKLIST_CLOCK_SKEW_SECONDS = "services.blocklist.clock_skew_seconds"; + +const PREF_SSL_IMPACT_ROOTS = ["security.tls.version.", "security.ssl3."]; + +const PREF_SSL_IMPACT = PREF_SSL_IMPACT_ROOTS.reduce((prefs, root) => { + return prefs.concat(Services.prefs.getChildList(root)); +}, []); + + +function getSerializedSecurityInfo(docShell) { + let serhelper = Cc["@mozilla.org/network/serialization-helper;1"] + .getService(Ci.nsISerializationHelper); + + let securityInfo = docShell.failedChannel && docShell.failedChannel.securityInfo; + if (!securityInfo) { + return ""; + } + securityInfo.QueryInterface(Ci.nsITransportSecurityInfo) + .QueryInterface(Ci.nsISerializable); + + return serhelper.serializeToString(securityInfo); +} + +var AboutNetAndCertErrorListener = { + init: function(chromeGlobal) { + addMessageListener("CertErrorDetails", this); + addMessageListener("Browser:CaptivePortalFreed", this); + chromeGlobal.addEventListener('AboutNetErrorLoad', this, false, true); + chromeGlobal.addEventListener('AboutNetErrorOpenCaptivePortal', this, false, true); + chromeGlobal.addEventListener('AboutNetErrorSetAutomatic', this, false, true); + chromeGlobal.addEventListener('AboutNetErrorOverride', this, false, true); + chromeGlobal.addEventListener('AboutNetErrorResetPreferences', this, false, true); + }, + + get isAboutNetError() { + return content.document.documentURI.startsWith("about:neterror"); + }, + + get isAboutCertError() { + return content.document.documentURI.startsWith("about:certerror"); + }, + + receiveMessage: function(msg) { + if (!this.isAboutCertError) { + return; + } + + switch (msg.name) { + case "CertErrorDetails": + this.onCertErrorDetails(msg); + break; + case "Browser:CaptivePortalFreed": + this.onCaptivePortalFreed(msg); + break; + } + }, + + onCertErrorDetails(msg) { + let div = content.document.getElementById("certificateErrorText"); + div.textContent = msg.data.info; + let learnMoreLink = content.document.getElementById("learnMoreLink"); + let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL"); + + switch (msg.data.code) { + case SEC_ERROR_UNKNOWN_ISSUER: + learnMoreLink.href = baseURL + "security-error"; + break; + + // in case the certificate expired we make sure the system clock + // matches settings server (kinto) time + case SEC_ERROR_EXPIRED_CERTIFICATE: + case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE: + case SEC_ERROR_OCSP_FUTURE_RESPONSE: + case SEC_ERROR_OCSP_OLD_RESPONSE: + case MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE: + case MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE: + + // use blocklist stats if available + if (Services.prefs.getPrefType(PREF_BLOCKLIST_CLOCK_SKEW_SECONDS)) { + let difference = Services.prefs.getIntPref(PREF_BLOCKLIST_CLOCK_SKEW_SECONDS); + + // if the difference is more than a day + if (Math.abs(difference) > 60 * 60 * 24) { + let formatter = new Intl.DateTimeFormat(); + let systemDate = formatter.format(new Date()); + // negative difference means local time is behind server time + let actualDate = formatter.format(new Date(Date.now() - difference * 1000)); + + content.document.getElementById("wrongSystemTime_URL") + .textContent = content.document.location.hostname; + content.document.getElementById("wrongSystemTime_systemDate") + .textContent = systemDate; + content.document.getElementById("wrongSystemTime_actualDate") + .textContent = actualDate; + + content.document.getElementById("errorShortDesc") + .style.display = "none"; + content.document.getElementById("wrongSystemTimePanel") + .style.display = "block"; + } + } + learnMoreLink.href = baseURL + "time-errors"; + break; + } + }, + + onCaptivePortalFreed(msg) { + content.dispatchEvent(new content.CustomEvent("AboutNetErrorCaptivePortalFreed")); + }, + + handleEvent: function(aEvent) { + if (!this.isAboutNetError && !this.isAboutCertError) { + return; + } + + switch (aEvent.type) { + case "AboutNetErrorLoad": + this.onPageLoad(aEvent); + break; + case "AboutNetErrorOpenCaptivePortal": + this.openCaptivePortalPage(aEvent); + break; + case "AboutNetErrorSetAutomatic": + this.onSetAutomatic(aEvent); + break; + case "AboutNetErrorOverride": + this.onOverride(aEvent); + break; + case "AboutNetErrorResetPreferences": + this.onResetPreferences(aEvent); + break; + } + }, + + changedCertPrefs: function () { + for (let prefName of PREF_SSL_IMPACT) { + if (Services.prefs.prefHasUserValue(prefName)) { + return true; + } + } + + return false; + }, + + onPageLoad: function(evt) { + if (this.isAboutCertError) { + let originalTarget = evt.originalTarget; + let ownerDoc = originalTarget.ownerDocument; + ClickEventHandler.onCertError(originalTarget, ownerDoc); + } + + let automatic = Services.prefs.getBoolPref("security.ssl.errorReporting.automatic"); + content.dispatchEvent(new content.CustomEvent("AboutNetErrorOptions", { + detail: JSON.stringify({ + enabled: Services.prefs.getBoolPref("security.ssl.errorReporting.enabled"), + changedCertPrefs: this.changedCertPrefs(), + automatic: automatic + }) + })); + + sendAsyncMessage("Browser:SSLErrorReportTelemetry", + {reportStatus: TLS_ERROR_REPORT_TELEMETRY_UI_SHOWN}); + }, + + openCaptivePortalPage: function(evt) { + sendAsyncMessage("Browser:OpenCaptivePortalPage"); + }, + + + onResetPreferences: function(evt) { + sendAsyncMessage("Browser:ResetSSLPreferences"); + }, + + onSetAutomatic: function(evt) { + sendAsyncMessage("Browser:SetSSLErrorReportAuto", { + automatic: evt.detail + }); + + // if we're enabling reports, send a report for this failure + if (evt.detail) { + let {host, port} = content.document.mozDocumentURIIfNotForErrorPages; + sendAsyncMessage("Browser:SendSSLErrorReport", { + uri: { host, port }, + securityInfo: getSerializedSecurityInfo(docShell), + }); + + } + }, + + onOverride: function(evt) { + let {host, port} = content.document.mozDocumentURIIfNotForErrorPages; + sendAsyncMessage("Browser:OverrideWeakCrypto", { uri: {host, port} }); + } +} + +AboutNetAndCertErrorListener.init(this); + + +var ClickEventHandler = { + init: function init() { + Cc["@mozilla.org/eventlistenerservice;1"] + .getService(Ci.nsIEventListenerService) + .addSystemEventListener(global, "click", this, true); + }, + + handleEvent: function(event) { + if (!event.isTrusted || event.defaultPrevented || event.button == 2) { + return; + } + + let originalTarget = event.originalTarget; + let ownerDoc = originalTarget.ownerDocument; + if (!ownerDoc) { + return; + } + + // Handle click events from about pages + if (ownerDoc.documentURI.startsWith("about:certerror")) { + this.onCertError(originalTarget, ownerDoc); + return; + } else if (ownerDoc.documentURI.startsWith("about:blocked")) { + this.onAboutBlocked(originalTarget, ownerDoc); + return; + } else if (ownerDoc.documentURI.startsWith("about:neterror")) { + this.onAboutNetError(event, ownerDoc.documentURI); + return; + } + + let [href, node, principal] = this._hrefAndLinkNodeForClickEvent(event); + + // get referrer attribute from clicked link and parse it + // if per element referrer is enabled, the element referrer overrules + // the document wide referrer + let referrerPolicy = ownerDoc.referrerPolicy; + if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer") && + node) { + let referrerAttrValue = Services.netUtils.parseAttributePolicyString(node. + getAttribute("referrerpolicy")); + if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) { + referrerPolicy = referrerAttrValue; + } + } + + let json = { button: event.button, shiftKey: event.shiftKey, + ctrlKey: event.ctrlKey, metaKey: event.metaKey, + altKey: event.altKey, href: null, title: null, + bookmark: false, referrerPolicy: referrerPolicy, + originAttributes: principal ? principal.originAttributes : {}, + isContentWindowPrivate: PrivateBrowsingUtils.isContentWindowPrivate(ownerDoc.defaultView)}; + + if (href) { + try { + BrowserUtils.urlSecurityCheck(href, principal); + } catch (e) { + return; + } + + json.href = href; + if (node) { + json.title = node.getAttribute("title"); + if (event.button == 0 && !event.ctrlKey && !event.shiftKey && + !event.altKey && !event.metaKey) { + json.bookmark = node.getAttribute("rel") == "sidebar"; + if (json.bookmark) { + event.preventDefault(); // Need to prevent the pageload. + } + } + } + json.noReferrer = BrowserUtils.linkHasNoReferrer(node) + + // Check if the link needs to be opened with mixed content allowed. + // Only when the owner doc has |mixedContentChannel| and the same origin + // should we allow mixed content. + json.allowMixedContent = false; + let docshell = ownerDoc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIWebNavigation) + .QueryInterface(Ci.nsIDocShell); + if (docShell.mixedContentChannel) { + const sm = Services.scriptSecurityManager; + try { + let targetURI = BrowserUtils.makeURI(href); + sm.checkSameOriginURI(docshell.mixedContentChannel.URI, targetURI, false); + json.allowMixedContent = true; + } catch (e) {} + } + json.originPrincipal = ownerDoc.nodePrincipal; + + sendAsyncMessage("Content:Click", json); + return; + } + + // This might be middle mouse navigation. + if (event.button == 1) { + sendAsyncMessage("Content:Click", json); + } + }, + + onCertError: function (targetElement, ownerDoc) { + let docShell = ownerDoc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIWebNavigation) + .QueryInterface(Ci.nsIDocShell); + sendAsyncMessage("Browser:CertExceptionError", { + location: ownerDoc.location.href, + elementId: targetElement.getAttribute("id"), + isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView), + securityInfoAsString: getSerializedSecurityInfo(docShell), + }); + }, + + onAboutBlocked: function (targetElement, ownerDoc) { + var reason = 'phishing'; + if (/e=malwareBlocked/.test(ownerDoc.documentURI)) { + reason = 'malware'; + } else if (/e=unwantedBlocked/.test(ownerDoc.documentURI)) { + reason = 'unwanted'; + } + sendAsyncMessage("Browser:SiteBlockedError", { + location: ownerDoc.location.href, + reason: reason, + elementId: targetElement.getAttribute("id"), + isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView) + }); + }, + + onAboutNetError: function (event, documentURI) { + let elmId = event.originalTarget.getAttribute("id"); + if (elmId == "returnButton") { + sendAsyncMessage("Browser:SSLErrorGoBack", {}); + return; + } + if (elmId != "errorTryAgain" || !/e=netOffline/.test(documentURI)) { + return; + } + // browser front end will handle clearing offline mode and refreshing + // the page *if* we're in offline mode now. Otherwise let the error page + // handle the click. + if (Services.io.offline) { + event.preventDefault(); + sendAsyncMessage("Browser:EnableOnlineMode", {}); + } + }, + + /** + * Extracts linkNode and href for the current click target. + * + * @param event + * The click event. + * @return [href, linkNode, linkPrincipal]. + * + * @note linkNode will be null if the click wasn't on an anchor + * element. This includes SVG links, because callers expect |node| + * to behave like an <a> element, which SVG links (XLink) don't. + */ + _hrefAndLinkNodeForClickEvent: function(event) { + function isHTMLLink(aNode) { + // Be consistent with what nsContextMenu.js does. + return ((aNode instanceof content.HTMLAnchorElement && aNode.href) || + (aNode instanceof content.HTMLAreaElement && aNode.href) || + aNode instanceof content.HTMLLinkElement); + } + + let node = event.target; + while (node && !isHTMLLink(node)) { + node = node.parentNode; + } + + if (node) + return [node.href, node, node.ownerDocument.nodePrincipal]; + + // If there is no linkNode, try simple XLink. + let href, baseURI; + node = event.target; + while (node && !href) { + if (node.nodeType == content.Node.ELEMENT_NODE && + (node.localName == "a" || + node.namespaceURI == "http://www.w3.org/1998/Math/MathML")) { + href = node.getAttribute("href") || + node.getAttributeNS("http://www.w3.org/1999/xlink", "href"); + if (href) { + baseURI = node.ownerDocument.baseURIObject; + break; + } + } + node = node.parentNode; + } + + // In case of XLink, we don't return the node we got href from since + // callers expect <a>-like elements. + // Note: makeURI() will throw if aUri is not a valid URI. + return [href ? BrowserUtils.makeURI(href, null, baseURI).spec : null, null, + node && node.ownerDocument.nodePrincipal]; + } +}; +ClickEventHandler.init(); + +ContentLinkHandler.init(this); + +// TODO: Load this lazily so the JSM is run only if a relevant event/message fires. +var pluginContent = new PluginContent(global); + +addEventListener("DOMWebNotificationClicked", function(event) { + sendAsyncMessage("DOMWebNotificationClicked", {}); +}, false); + +addEventListener("DOMServiceWorkerFocusClient", function(event) { + sendAsyncMessage("DOMServiceWorkerFocusClient", {}); +}, false); + +ContentWebRTC.init(); +addMessageListener("rtcpeer:Allow", ContentWebRTC); +addMessageListener("rtcpeer:Deny", ContentWebRTC); +addMessageListener("webrtc:Allow", ContentWebRTC); +addMessageListener("webrtc:Deny", ContentWebRTC); +addMessageListener("webrtc:StopSharing", ContentWebRTC); +addMessageListener("webrtc:StartBrowserSharing", () => { + let windowID = content.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIDOMWindowUtils).outerWindowID; + sendAsyncMessage("webrtc:response:StartBrowserSharing", { + windowID: windowID + }); +}); + +addEventListener("pageshow", function(event) { + if (event.target == content.document) { + sendAsyncMessage("PageVisibility:Show", { + persisted: event.persisted, + }); + } +}); +addEventListener("pagehide", function(event) { + if (event.target == content.document) { + sendAsyncMessage("PageVisibility:Hide", { + persisted: event.persisted, + }); + } +}); + +var PageMetadataMessenger = { + init() { + addMessageListener("PageMetadata:GetPageData", this); + addMessageListener("PageMetadata:GetMicroformats", this); + }, + receiveMessage(message) { + switch (message.name) { + case "PageMetadata:GetPageData": { + let target = message.objects.target; + let result = PageMetadata.getData(content.document, target); + sendAsyncMessage("PageMetadata:PageDataResult", result); + break; + } + case "PageMetadata:GetMicroformats": { + let target = message.objects.target; + let result = PageMetadata.getMicroformats(content.document, target); + sendAsyncMessage("PageMetadata:MicroformatsResult", result); + break; + } + } + } +} +PageMetadataMessenger.init(); + +addEventListener("ActivateSocialFeature", function (aEvent) { + let document = content.document; + let dwu = content.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIDOMWindowUtils); + if (!dwu.isHandlingUserInput) { + Cu.reportError("attempt to activate provider without user input from " + document.nodePrincipal.origin); + return; + } + + let node = aEvent.target; + let ownerDocument = node.ownerDocument; + let data = node.getAttribute("data-service"); + if (data) { + try { + data = JSON.parse(data); + } catch (e) { + Cu.reportError("Social Service manifest parse error: " + e); + return; + } + } else { + Cu.reportError("Social Service manifest not available"); + return; + } + + sendAsyncMessage("Social:Activation", { + url: ownerDocument.location.href, + origin: ownerDocument.nodePrincipal.origin, + manifest: data + }); +}, true, true); + +addMessageListener("ContextMenu:SaveVideoFrameAsImage", (message) => { + let video = message.objects.target; + let canvas = content.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas"); + canvas.width = video.videoWidth; + canvas.height = video.videoHeight; + + let ctxDraw = canvas.getContext("2d"); + ctxDraw.drawImage(video, 0, 0); + sendAsyncMessage("ContextMenu:SaveVideoFrameAsImage:Result", { + dataURL: canvas.toDataURL("image/jpeg", ""), + }); +}); + +addMessageListener("ContextMenu:MediaCommand", (message) => { + E10SUtils.wrapHandlingUserInput( + content, message.data.handlingUserInput, + () => { + let media = message.objects.element; + switch (message.data.command) { + case "play": + media.play(); + break; + case "pause": + media.pause(); + break; + case "loop": + media.loop = !media.loop; + break; + case "mute": + media.muted = true; + break; + case "unmute": + media.muted = false; + break; + case "playbackRate": + media.playbackRate = message.data.data; + break; + case "hidecontrols": + media.removeAttribute("controls"); + break; + case "showcontrols": + media.setAttribute("controls", "true"); + break; + case "fullscreen": + if (content.document.fullscreenEnabled) + media.requestFullscreen(); + break; + } + }); +}); + +addMessageListener("ContextMenu:Canvas:ToBlobURL", (message) => { + message.objects.target.toBlob((blob) => { + let blobURL = URL.createObjectURL(blob); + sendAsyncMessage("ContextMenu:Canvas:ToBlobURL:Result", { blobURL }); + }); +}); + +addMessageListener("ContextMenu:ReloadFrame", (message) => { + message.objects.target.ownerDocument.location.reload(); +}); + +addMessageListener("ContextMenu:ReloadImage", (message) => { + let image = message.objects.target; + if (image instanceof Ci.nsIImageLoadingContent) + image.forceReload(); +}); + +addMessageListener("ContextMenu:BookmarkFrame", (message) => { + let frame = message.objects.target.ownerDocument; + sendAsyncMessage("ContextMenu:BookmarkFrame:Result", + { title: frame.title, + description: PlacesUIUtils.getDescriptionFromDocument(frame) }); +}); + +addMessageListener("ContextMenu:SearchFieldBookmarkData", (message) => { + let node = message.objects.target; + + let charset = node.ownerDocument.characterSet; + + let formBaseURI = BrowserUtils.makeURI(node.form.baseURI, + charset); + + let formURI = BrowserUtils.makeURI(node.form.getAttribute("action"), + charset, + formBaseURI); + + let spec = formURI.spec; + + let isURLEncoded = + (node.form.method.toUpperCase() == "POST" + && (node.form.enctype == "application/x-www-form-urlencoded" || + node.form.enctype == "")); + + let title = node.ownerDocument.title; + let description = PlacesUIUtils.getDescriptionFromDocument(node.ownerDocument); + + let formData = []; + + function escapeNameValuePair(aName, aValue, aIsFormUrlEncoded) { + if (aIsFormUrlEncoded) { + return escape(aName + "=" + aValue); + } + return escape(aName) + "=" + escape(aValue); + } + + for (let el of node.form.elements) { + if (!el.type) // happens with fieldsets + continue; + + if (el == node) { + formData.push((isURLEncoded) ? escapeNameValuePair(el.name, "%s", true) : + // Don't escape "%s", just append + escapeNameValuePair(el.name, "", false) + "%s"); + continue; + } + + let type = el.type.toLowerCase(); + + if (((el instanceof content.HTMLInputElement && el.mozIsTextField(true)) || + type == "hidden" || type == "textarea") || + ((type == "checkbox" || type == "radio") && el.checked)) { + formData.push(escapeNameValuePair(el.name, el.value, isURLEncoded)); + } else if (el instanceof content.HTMLSelectElement && el.selectedIndex >= 0) { + for (let j=0; j < el.options.length; j++) { + if (el.options[j].selected) + formData.push(escapeNameValuePair(el.name, el.options[j].value, + isURLEncoded)); + } + } + } + + let postData; + + if (isURLEncoded) + postData = formData.join("&"); + else { + let separator = spec.includes("?") ? "&" : "?"; + spec += separator + formData.join("&"); + } + + sendAsyncMessage("ContextMenu:SearchFieldBookmarkData:Result", + { spec, title, description, postData, charset }); +}); + +addMessageListener("Bookmarks:GetPageDetails", (message) => { + let doc = content.document; + let isErrorPage = /^about:(neterror|certerror|blocked)/.test(doc.documentURI); + sendAsyncMessage("Bookmarks:GetPageDetails:Result", + { isErrorPage: isErrorPage, + description: PlacesUIUtils.getDescriptionFromDocument(doc) }); +}); + +var LightWeightThemeWebInstallListener = { + _previewWindow: null, + + init: function() { + addEventListener("InstallBrowserTheme", this, false, true); + addEventListener("PreviewBrowserTheme", this, false, true); + addEventListener("ResetBrowserThemePreview", this, false, true); + }, + + handleEvent: function (event) { + switch (event.type) { + case "InstallBrowserTheme": { + sendAsyncMessage("LightWeightThemeWebInstaller:Install", { + baseURI: event.target.baseURI, + themeData: event.target.getAttribute("data-browsertheme"), + }); + break; + } + case "PreviewBrowserTheme": { + sendAsyncMessage("LightWeightThemeWebInstaller:Preview", { + baseURI: event.target.baseURI, + themeData: event.target.getAttribute("data-browsertheme"), + }); + this._previewWindow = event.target.ownerGlobal; + this._previewWindow.addEventListener("pagehide", this, true); + break; + } + case "pagehide": { + sendAsyncMessage("LightWeightThemeWebInstaller:ResetPreview"); + this._resetPreviewWindow(); + break; + } + case "ResetBrowserThemePreview": { + if (this._previewWindow) { + sendAsyncMessage("LightWeightThemeWebInstaller:ResetPreview", + {baseURI: event.target.baseURI}); + this._resetPreviewWindow(); + } + break; + } + } + }, + + _resetPreviewWindow: function () { + this._previewWindow.removeEventListener("pagehide", this, true); + this._previewWindow = null; + } +}; + +LightWeightThemeWebInstallListener.init(); + +function disableSetDesktopBackground(aTarget) { + // Disable the Set as Desktop Background menu item if we're still trying + // to load the image or the load failed. + if (!(aTarget instanceof Ci.nsIImageLoadingContent)) + return true; + + if (("complete" in aTarget) && !aTarget.complete) + return true; + + if (aTarget.currentURI.schemeIs("javascript")) + return true; + + let request = aTarget.QueryInterface(Ci.nsIImageLoadingContent) + .getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST); + if (!request) + return true; + + return false; +} + +addMessageListener("ContextMenu:SetAsDesktopBackground", (message) => { + let target = message.objects.target; + + // Paranoia: check disableSetDesktopBackground again, in case the + // image changed since the context menu was initiated. + let disable = disableSetDesktopBackground(target); + + if (!disable) { + try { + BrowserUtils.urlSecurityCheck(target.currentURI.spec, target.ownerDocument.nodePrincipal); + let canvas = content.document.createElement("canvas"); + canvas.width = target.naturalWidth; + canvas.height = target.naturalHeight; + let ctx = canvas.getContext("2d"); + ctx.drawImage(target, 0, 0); + let dataUrl = canvas.toDataURL(); + sendAsyncMessage("ContextMenu:SetAsDesktopBackground:Result", + { dataUrl }); + } + catch (e) { + Cu.reportError(e); + disable = true; + } + } + + if (disable) + sendAsyncMessage("ContextMenu:SetAsDesktopBackground:Result", { disable }); +}); + +var PageInfoListener = { + + init: function() { + addMessageListener("PageInfo:getData", this); + }, + + receiveMessage: function(message) { + let strings = message.data.strings; + let window; + let document; + + let frameOuterWindowID = message.data.frameOuterWindowID; + + // If inside frame then get the frame's window and document. + if (frameOuterWindowID) { + window = Services.wm.getOuterWindowWithId(frameOuterWindowID); + document = window.document; + } + else { + window = content.window; + document = content.document; + } + + let imageElement = message.objects.imageElement; + + let pageInfoData = {metaViewRows: this.getMetaInfo(document), + docInfo: this.getDocumentInfo(document), + feeds: this.getFeedsInfo(document, strings), + windowInfo: this.getWindowInfo(window), + imageInfo: this.getImageInfo(imageElement)}; + + sendAsyncMessage("PageInfo:data", pageInfoData); + + // Separate step so page info dialog isn't blank while waiting for this to finish. + this.getMediaInfo(document, window, strings); + }, + + getImageInfo: function(imageElement) { + let imageInfo = null; + if (imageElement) { + imageInfo = { + currentSrc: imageElement.currentSrc, + width: imageElement.width, + height: imageElement.height, + imageText: imageElement.title || imageElement.alt + }; + } + return imageInfo; + }, + + getMetaInfo: function(document) { + let metaViewRows = []; + + // Get the meta tags from the page. + let metaNodes = document.getElementsByTagName("meta"); + + for (let metaNode of metaNodes) { + metaViewRows.push([metaNode.name || metaNode.httpEquiv || metaNode.getAttribute("property"), + metaNode.content]); + } + + return metaViewRows; + }, + + getWindowInfo: function(window) { + let windowInfo = {}; + windowInfo.isTopWindow = window == window.top; + + let hostName = null; + try { + hostName = window.location.host; + } + catch (exception) { } + + windowInfo.hostName = hostName; + return windowInfo; + }, + + getDocumentInfo: function(document) { + let docInfo = {}; + docInfo.title = document.title; + docInfo.location = document.location.toString(); + docInfo.referrer = document.referrer; + docInfo.compatMode = document.compatMode; + docInfo.contentType = document.contentType; + docInfo.characterSet = document.characterSet; + docInfo.lastModified = document.lastModified; + docInfo.principal = document.nodePrincipal; + + let documentURIObject = {}; + documentURIObject.spec = document.documentURIObject.spec; + documentURIObject.originCharset = document.documentURIObject.originCharset; + docInfo.documentURIObject = documentURIObject; + + docInfo.isContentWindowPrivate = PrivateBrowsingUtils.isContentWindowPrivate(content); + + return docInfo; + }, + + getFeedsInfo: function(document, strings) { + let feeds = []; + // Get the feeds from the page. + let linkNodes = document.getElementsByTagName("link"); + let length = linkNodes.length; + for (let i = 0; i < length; i++) { + let link = linkNodes[i]; + if (!link.href) { + continue; + } + let rel = link.rel && link.rel.toLowerCase(); + let rels = {}; + + if (rel) { + for (let relVal of rel.split(/\s+/)) { + rels[relVal] = true; + } + } + + if (rels.feed || (link.type && rels.alternate && !rels.stylesheet)) { + let type = Feeds.isValidFeed(link, document.nodePrincipal, "feed" in rels); + if (type) { + type = strings[type] || strings["application/rss+xml"]; + feeds.push([link.title, type, link.href]); + } + } + } + return feeds; + }, + + // Only called once to get the media tab's media elements from the content page. + getMediaInfo: function(document, window, strings) + { + let frameList = this.goThroughFrames(document, window); + Task.spawn(() => this.processFrames(document, frameList, strings)); + }, + + goThroughFrames: function(document, window) + { + let frameList = [document]; + if (window && window.frames.length > 0) { + let num = window.frames.length; + for (let i = 0; i < num; i++) { + // Recurse through the frames. + frameList.concat(this.goThroughFrames(window.frames[i].document, + window.frames[i])); + } + } + return frameList; + }, + + processFrames: function*(document, frameList, strings) + { + let nodeCount = 0; + for (let doc of frameList) { + let iterator = doc.createTreeWalker(doc, content.NodeFilter.SHOW_ELEMENT); + + // Goes through all the elements on the doc. imageViewRows takes only the media elements. + while (iterator.nextNode()) { + let mediaItems = this.getMediaItems(document, strings, iterator.currentNode); + + if (mediaItems.length) { + sendAsyncMessage("PageInfo:mediaData", + {mediaItems, isComplete: false}); + } + + if (++nodeCount % 500 == 0) { + // setTimeout every 500 elements so we don't keep blocking the content process. + yield new Promise(resolve => setTimeout(resolve, 10)); + } + } + } + // Send that page info media fetching has finished. + sendAsyncMessage("PageInfo:mediaData", {isComplete: true}); + }, + + getMediaItems: function(document, strings, elem) + { + // Check for images defined in CSS (e.g. background, borders) + let computedStyle = elem.ownerGlobal.getComputedStyle(elem); + // A node can have multiple media items associated with it - for example, + // multiple background images. + let mediaItems = []; + + let addImage = (url, type, alt, elem, isBg) => { + let element = this.serializeElementInfo(document, url, type, alt, elem, isBg); + mediaItems.push([url, type, alt, element, isBg]); + }; + + if (computedStyle) { + let addImgFunc = (label, val) => { + if (val.primitiveType == content.CSSPrimitiveValue.CSS_URI) { + addImage(val.getStringValue(), label, strings.notSet, elem, true); + } + else if (val.primitiveType == content.CSSPrimitiveValue.CSS_STRING) { + // This is for -moz-image-rect. + // TODO: Reimplement once bug 714757 is fixed. + let strVal = val.getStringValue(); + if (strVal.search(/^.*url\(\"?/) > -1) { + let url = strVal.replace(/^.*url\(\"?/, "").replace(/\"?\).*$/, ""); + addImage(url, label, strings.notSet, elem, true); + } + } + else if (val.cssValueType == content.CSSValue.CSS_VALUE_LIST) { + // Recursively resolve multiple nested CSS value lists. + for (let i = 0; i < val.length; i++) { + addImgFunc(label, val.item(i)); + } + } + }; + + addImgFunc(strings.mediaBGImg, computedStyle.getPropertyCSSValue("background-image")); + addImgFunc(strings.mediaBorderImg, computedStyle.getPropertyCSSValue("border-image-source")); + addImgFunc(strings.mediaListImg, computedStyle.getPropertyCSSValue("list-style-image")); + addImgFunc(strings.mediaCursor, computedStyle.getPropertyCSSValue("cursor")); + } + + // One swi^H^H^Hif-else to rule them all. + if (elem instanceof content.HTMLImageElement) { + addImage(elem.src, strings.mediaImg, + (elem.hasAttribute("alt")) ? elem.alt : strings.notSet, elem, false); + } + else if (elem instanceof content.SVGImageElement) { + try { + // Note: makeURLAbsolute will throw if either the baseURI is not a valid URI + // or the URI formed from the baseURI and the URL is not a valid URI. + if (elem.href.baseVal) { + let href = Services.io.newURI(elem.href.baseVal, null, Services.io.newURI(elem.baseURI)).spec; + addImage(href, strings.mediaImg, "", elem, false); + } + } catch (e) { } + } + else if (elem instanceof content.HTMLVideoElement) { + addImage(elem.currentSrc, strings.mediaVideo, "", elem, false); + } + else if (elem instanceof content.HTMLAudioElement) { + addImage(elem.currentSrc, strings.mediaAudio, "", elem, false); + } + else if (elem instanceof content.HTMLLinkElement) { + if (elem.rel && /\bicon\b/i.test(elem.rel)) { + addImage(elem.href, strings.mediaLink, "", elem, false); + } + } + else if (elem instanceof content.HTMLInputElement || elem instanceof content.HTMLButtonElement) { + if (elem.type.toLowerCase() == "image") { + addImage(elem.src, strings.mediaInput, + (elem.hasAttribute("alt")) ? elem.alt : strings.notSet, elem, false); + } + } + else if (elem instanceof content.HTMLObjectElement) { + addImage(elem.data, strings.mediaObject, this.getValueText(elem), elem, false); + } + else if (elem instanceof content.HTMLEmbedElement) { + addImage(elem.src, strings.mediaEmbed, "", elem, false); + } + + return mediaItems; + }, + + /** + * Set up a JSON element object with all the instanceOf and other infomation that + * makePreview in pageInfo.js uses to figure out how to display the preview. + */ + + serializeElementInfo: function(document, url, type, alt, item, isBG) + { + let result = {}; + + let imageText; + if (!isBG && + !(item instanceof content.SVGImageElement) && + !(document instanceof content.ImageDocument)) { + imageText = item.title || item.alt; + + if (!imageText && !(item instanceof content.HTMLImageElement)) { + imageText = this.getValueText(item); + } + } + + result.imageText = imageText; + result.longDesc = item.longDesc; + result.numFrames = 1; + + if (item instanceof content.HTMLObjectElement || + item instanceof content.HTMLEmbedElement || + item instanceof content.HTMLLinkElement) { + result.mimeType = item.type; + } + + if (!result.mimeType && !isBG && item instanceof Ci.nsIImageLoadingContent) { + // Interface for image loading content. + let imageRequest = item.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST); + if (imageRequest) { + result.mimeType = imageRequest.mimeType; + let image = !(imageRequest.imageStatus & imageRequest.STATUS_ERROR) && imageRequest.image; + if (image) { + result.numFrames = image.numFrames; + } + } + } + + // If we have a data url, get the MIME type from the url. + if (!result.mimeType && url.startsWith("data:")) { + let dataMimeType = /^data:(image\/[^;,]+)/i.exec(url); + if (dataMimeType) + result.mimeType = dataMimeType[1].toLowerCase(); + } + + result.HTMLLinkElement = item instanceof content.HTMLLinkElement; + result.HTMLInputElement = item instanceof content.HTMLInputElement; + result.HTMLImageElement = item instanceof content.HTMLImageElement; + result.HTMLObjectElement = item instanceof content.HTMLObjectElement; + result.SVGImageElement = item instanceof content.SVGImageElement; + result.HTMLVideoElement = item instanceof content.HTMLVideoElement; + result.HTMLAudioElement = item instanceof content.HTMLAudioElement; + + if (isBG) { + // Items that are showing this image as a background + // image might not necessarily have a width or height, + // so we'll dynamically generate an image and send up the + // natural dimensions. + let img = content.document.createElement("img"); + img.src = url; + result.naturalWidth = img.naturalWidth; + result.naturalHeight = img.naturalHeight; + } else { + // Otherwise, we can use the current width and height + // of the image. + result.width = item.width; + result.height = item.height; + } + + if (item instanceof content.SVGImageElement) { + result.SVGImageElementWidth = item.width.baseVal.value; + result.SVGImageElementHeight = item.height.baseVal.value; + } + + result.baseURI = item.baseURI; + + return result; + }, + + // Other Misc Stuff + // Modified from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html + // parse a node to extract the contents of the node + getValueText: function(node) + { + + let valueText = ""; + + // Form input elements don't generally contain information that is useful to our callers, so return nothing. + if (node instanceof content.HTMLInputElement || + node instanceof content.HTMLSelectElement || + node instanceof content.HTMLTextAreaElement) { + return valueText; + } + + // Otherwise recurse for each child. + let length = node.childNodes.length; + + for (let i = 0; i < length; i++) { + let childNode = node.childNodes[i]; + let nodeType = childNode.nodeType; + + // Text nodes are where the goods are. + if (nodeType == content.Node.TEXT_NODE) { + valueText += " " + childNode.nodeValue; + } + // And elements can have more text inside them. + else if (nodeType == content.Node.ELEMENT_NODE) { + // Images are special, we want to capture the alt text as if the image weren't there. + if (childNode instanceof content.HTMLImageElement) { + valueText += " " + this.getAltText(childNode); + } + else { + valueText += " " + this.getValueText(childNode); + } + } + } + + return this.stripWS(valueText); + }, + + // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html. + // Traverse the tree in search of an img or area element and grab its alt tag. + getAltText: function(node) + { + let altText = ""; + + if (node.alt) { + return node.alt; + } + let length = node.childNodes.length; + for (let i = 0; i < length; i++) { + if ((altText = this.getAltText(node.childNodes[i]) != undefined)) { // stupid js warning... + return altText; + } + } + return ""; + }, + + // Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html. + // Strip leading and trailing whitespace, and replace multiple consecutive whitespace characters with a single space. + stripWS: function(text) + { + let middleRE = /\s+/g; + let endRE = /(^\s+)|(\s+$)/g; + + text = text.replace(middleRE, " "); + return text.replace(endRE, ""); + } +}; +PageInfoListener.init(); + +let OfflineApps = { + _docId: 0, + _docIdMap: new Map(), + + _docManifestSet: new Set(), + + _observerAdded: false, + registerWindow(aWindow) { + if (!this._observerAdded) { + this._observerAdded = true; + Services.obs.addObserver(this, "offline-cache-update-completed", true); + } + let manifestURI = this._getManifestURI(aWindow); + this._docManifestSet.add(manifestURI.spec); + }, + + handleEvent(event) { + if (event.type == "MozApplicationManifest") { + this.offlineAppRequested(event.originalTarget.defaultView); + } + }, + + _getManifestURI(aWindow) { + if (!aWindow.document.documentElement) + return null; + + var attr = aWindow.document.documentElement.getAttribute("manifest"); + if (!attr) + return null; + + try { + var contentURI = BrowserUtils.makeURI(aWindow.location.href, null, null); + return BrowserUtils.makeURI(attr, aWindow.document.characterSet, contentURI); + } catch (e) { + return null; + } + }, + + offlineAppRequested(aContentWindow) { + this.registerWindow(aContentWindow); + if (!Services.prefs.getBoolPref("browser.offline-apps.notify")) { + return; + } + + let currentURI = aContentWindow.document.documentURIObject; + // don't bother showing UI if the user has already made a decision + if (Services.perms.testExactPermission(currentURI, "offline-app") != Services.perms.UNKNOWN_ACTION) + return; + + try { + if (Services.prefs.getBoolPref("offline-apps.allow_by_default")) { + // all pages can use offline capabilities, no need to ask the user + return; + } + } catch (e) { + // this pref isn't set by default, ignore failures + } + let docId = ++this._docId; + this._docIdMap.set(docId, Cu.getWeakReference(aContentWindow.document)); + sendAsyncMessage("OfflineApps:RequestPermission", { + uri: currentURI.spec, + docId, + }); + }, + + _startFetching(aDocument) { + if (!aDocument.documentElement) + return; + + let manifestURI = this._getManifestURI(aDocument.defaultView); + if (!manifestURI) + return; + + var updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"]. + getService(Ci.nsIOfflineCacheUpdateService); + updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject, + aDocument.nodePrincipal, aDocument.defaultView); + }, + + receiveMessage(aMessage) { + if (aMessage.name == "OfflineApps:StartFetching") { + let doc = this._docIdMap.get(aMessage.data.docId); + doc = doc && doc.get(); + if (doc) { + this._startFetching(doc); + } + this._docIdMap.delete(aMessage.data.docId); + } + }, + + observe(aSubject, aTopic, aState) { + if (aTopic == "offline-cache-update-completed") { + let cacheUpdate = aSubject.QueryInterface(Ci.nsIOfflineCacheUpdate); + let uri = cacheUpdate.manifestURI; + if (uri && this._docManifestSet.has(uri.spec)) { + sendAsyncMessage("OfflineApps:CheckUsage", {uri: uri.spec}); + } + } + }, + QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, + Ci.nsISupportsWeakReference]), +}; + +addEventListener("MozApplicationManifest", OfflineApps, false); +addMessageListener("OfflineApps:StartFetching", OfflineApps); |