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-rw-r--r--components/feeds/BrowserFeeds.manifest28
-rw-r--r--components/feeds/FeedConverter.js591
-rw-r--r--components/feeds/FeedWriter.js1397
-rw-r--r--components/feeds/WebContentConverter.js927
-rw-r--r--components/feeds/content/subscribe.css7
-rw-r--r--components/feeds/content/subscribe.js23
-rw-r--r--components/feeds/content/subscribe.xhtml65
-rw-r--r--components/feeds/content/subscribe.xml40
-rw-r--r--components/feeds/jar.mn9
-rw-r--r--components/feeds/moz.build33
-rw-r--r--components/feeds/nsFeedSniffer.cpp363
-rw-r--r--components/feeds/nsFeedSniffer.h37
-rw-r--r--components/feeds/nsIFeedResultService.idl66
-rw-r--r--components/feeds/nsIWebContentConverterRegistrar.idl117
14 files changed, 3703 insertions, 0 deletions
diff --git a/components/feeds/BrowserFeeds.manifest b/components/feeds/BrowserFeeds.manifest
new file mode 100644
index 0000000..a584323
--- /dev/null
+++ b/components/feeds/BrowserFeeds.manifest
@@ -0,0 +1,28 @@
+# WebappRT doesn't need these instructions, and they don't necessarily work
+# with it, but it does use a GRE directory that the GRE shares with Firefox,
+# so in order to prevent the instructions from being processed for WebappRT,
+# we need to restrict them to the applications that depend on them, i.e.:
+#
+# b2g: {3c2e2abc-06d4-11e1-ac3b-374f68613e61}
+# browser: {8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}
+# mobile/android: {aa3c5121-dab2-40e2-81ca-7ea25febc110}
+# mobile/xul: {a23983c0-fd0e-11dc-95ff-0800200c9a66}
+#
+# In theory we should do this for all these instructions, but in practice it is
+# sufficient to do it for the app-startup one, and the file is simpler that way.
+
+component {229fa115-9412-4d32-baf3-2fc407f76fb1} FeedConverter.js
+contract @mozilla.org/streamconv;1?from=application/vnd.mozilla.maybe.feed&to=*/* {229fa115-9412-4d32-baf3-2fc407f76fb1}
+contract @mozilla.org/streamconv;1?from=application/vnd.mozilla.maybe.video.feed&to=*/* {229fa115-9412-4d32-baf3-2fc407f76fb1}
+contract @mozilla.org/streamconv;1?from=application/vnd.mozilla.maybe.audio.feed&to=*/* {229fa115-9412-4d32-baf3-2fc407f76fb1}
+component {2376201c-bbc6-472f-9b62-7548040a61c6} FeedConverter.js
+contract @mozilla.org/browser/feeds/result-service;1 {2376201c-bbc6-472f-9b62-7548040a61c6}
+component {4f91ef2e-57ba-472e-ab7a-b4999e42d6c0} FeedConverter.js
+contract @mozilla.org/network/protocol;1?name=feed {4f91ef2e-57ba-472e-ab7a-b4999e42d6c0}
+component {1c31ed79-accd-4b94-b517-06e0c81999d5} FeedConverter.js
+contract @mozilla.org/network/protocol;1?name=pcast {1c31ed79-accd-4b94-b517-06e0c81999d5}
+component {49bb6593-3aff-4eb3-a068-2712c28bd58e} FeedWriter.js
+contract @mozilla.org/browser/feeds/result-writer;1 {49bb6593-3aff-4eb3-a068-2712c28bd58e}
+component {792a7e82-06a0-437c-af63-b2d12e808acc} WebContentConverter.js
+contract @mozilla.org/embeddor.implemented/web-content-handler-registrar;1 {792a7e82-06a0-437c-af63-b2d12e808acc}
+category app-startup WebContentConverter service,@mozilla.org/embeddor.implemented/web-content-handler-registrar;1 application={3c2e2abc-06d4-11e1-ac3b-374f68613e61} application={8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4} application={aa3c5121-dab2-40e2-81ca-7ea25febc110} application={a23983c0-fd0e-11dc-95ff-0800200c9a66}
diff --git a/components/feeds/FeedConverter.js b/components/feeds/FeedConverter.js
new file mode 100644
index 0000000..d0f5737
--- /dev/null
+++ b/components/feeds/FeedConverter.js
@@ -0,0 +1,591 @@
+/* -*- 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/. */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/debug.js");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+function LOG(str) {
+ dump("*** " + str + "\n");
+}
+
+const FS_CONTRACTID = "@mozilla.org/browser/feeds/result-service;1";
+const FPH_CONTRACTID = "@mozilla.org/network/protocol;1?name=feed";
+const PCPH_CONTRACTID = "@mozilla.org/network/protocol;1?name=pcast";
+
+const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
+const TYPE_MAYBE_VIDEO_FEED = "application/vnd.mozilla.maybe.video.feed";
+const TYPE_MAYBE_AUDIO_FEED = "application/vnd.mozilla.maybe.audio.feed";
+const TYPE_ANY = "*/*";
+
+const PREF_SELECTED_APP = "browser.feeds.handlers.application";
+const PREF_SELECTED_WEB = "browser.feeds.handlers.webservice";
+const PREF_SELECTED_ACTION = "browser.feeds.handler";
+const PREF_SELECTED_READER = "browser.feeds.handler.default";
+
+const PREF_VIDEO_SELECTED_APP = "browser.videoFeeds.handlers.application";
+const PREF_VIDEO_SELECTED_WEB = "browser.videoFeeds.handlers.webservice";
+const PREF_VIDEO_SELECTED_ACTION = "browser.videoFeeds.handler";
+const PREF_VIDEO_SELECTED_READER = "browser.videoFeeds.handler.default";
+
+const PREF_AUDIO_SELECTED_APP = "browser.audioFeeds.handlers.application";
+const PREF_AUDIO_SELECTED_WEB = "browser.audioFeeds.handlers.webservice";
+const PREF_AUDIO_SELECTED_ACTION = "browser.audioFeeds.handler";
+const PREF_AUDIO_SELECTED_READER = "browser.audioFeeds.handler.default";
+
+function getPrefAppForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_APP;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_APP;
+
+ default:
+ return PREF_SELECTED_APP;
+ }
+}
+
+function getPrefWebForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_WEB;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_WEB;
+
+ default:
+ return PREF_SELECTED_WEB;
+ }
+}
+
+function getPrefActionForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_ACTION;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_ACTION;
+
+ default:
+ return PREF_SELECTED_ACTION;
+ }
+}
+
+function getPrefReaderForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_READER;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_READER;
+
+ default:
+ return PREF_SELECTED_READER;
+ }
+}
+
+function safeGetCharPref(pref, defaultValue) {
+ var prefs =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ try {
+ return prefs.getCharPref(pref);
+ }
+ catch (e) {
+ }
+ return defaultValue;
+}
+
+function FeedConverter() {
+}
+FeedConverter.prototype = {
+ classID: Components.ID("{229fa115-9412-4d32-baf3-2fc407f76fb1}"),
+
+ /**
+ * This is the downloaded text data for the feed.
+ */
+ _data: null,
+
+ /**
+ * This is the object listening to the conversion, which is ultimately the
+ * docshell for the load.
+ */
+ _listener: null,
+
+ /**
+ * Records if the feed was sniffed
+ */
+ _sniffed: false,
+
+ /**
+ * See nsIStreamConverter.idl
+ */
+ convert: function FC_convert(sourceStream, sourceType, destinationType,
+ context) {
+ throw Cr.NS_ERROR_NOT_IMPLEMENTED;
+ },
+
+ /**
+ * See nsIStreamConverter.idl
+ */
+ asyncConvertData: function FC_asyncConvertData(sourceType, destinationType,
+ listener, context) {
+ this._listener = listener;
+ },
+
+ /**
+ * Whether or not the preview page is being forced.
+ */
+ _forcePreviewPage: false,
+
+ /**
+ * Release our references to various things once we're done using them.
+ */
+ _releaseHandles: function FC__releaseHandles() {
+ this._listener = null;
+ this._request = null;
+ this._processor = null;
+ },
+
+ /**
+ * See nsIFeedResultListener.idl
+ */
+ handleResult: function FC_handleResult(result) {
+ // Feeds come in various content types, which our feed sniffer coerces to
+ // the maybe.feed type. However, feeds are used as a transport for
+ // different data types, e.g. news/blogs (traditional feed), video/audio
+ // (podcasts) and photos (photocasts, photostreams). Each of these is
+ // different in that there's a different class of application suitable for
+ // handling feeds of that type, but without a content-type differentiation
+ // it is difficult for us to disambiguate.
+ //
+ // The other problem is that if the user specifies an auto-action handler
+ // for one feed application, the fact that the content type is shared means
+ // that all other applications will auto-load with that handler too,
+ // regardless of the content-type.
+ //
+ // This means that content-type alone is not enough to determine whether
+ // or not a feed should be auto-handled. This means that for feeds we need
+ // to always use this stream converter, even when an auto-action is
+ // specified, not the basic one provided by WebContentConverter. This
+ // converter needs to consume all of the data and parse it, and based on
+ // that determination make a judgment about type.
+ //
+ // Since there are no content types for this content, and I'm not going to
+ // invent any, the upshot is that while a user can set an auto-handler for
+ // generic feed content, the system will prevent them from setting an auto-
+ // handler for other stream types. In those cases, the user will always see
+ // the preview page and have to select a handler. We can guess and show
+ // a client handler, but will not be able to show web handlers for those
+ // types.
+ //
+ // If this is just a feed, not some kind of specialized application, then
+ // auto-handlers can be set and we should obey them.
+ try {
+ var feedService =
+ Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+ if (!this._forcePreviewPage && result.doc) {
+ var feed = result.doc.QueryInterface(Ci.nsIFeed);
+ var handler = safeGetCharPref(getPrefActionForType(feed.type), "ask");
+
+ if (handler != "ask") {
+ if (handler == "reader")
+ handler = safeGetCharPref(getPrefReaderForType(feed.type), "bookmarks");
+ switch (handler) {
+ case "web":
+ var wccr =
+ Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+ getService(Ci.nsIWebContentConverterService);
+ if ((feed.type == Ci.nsIFeed.TYPE_FEED &&
+ wccr.getAutoHandler(TYPE_MAYBE_FEED)) ||
+ (feed.type == Ci.nsIFeed.TYPE_VIDEO &&
+ wccr.getAutoHandler(TYPE_MAYBE_VIDEO_FEED)) ||
+ (feed.type == Ci.nsIFeed.TYPE_AUDIO &&
+ wccr.getAutoHandler(TYPE_MAYBE_AUDIO_FEED))) {
+ wccr.loadPreferredHandler(this._request);
+ return;
+ }
+ break;
+
+ default:
+ LOG("unexpected handler: " + handler);
+ // fall through -- let feed service handle error
+ case "bookmarks":
+ case "client":
+ try {
+ var title = feed.title ? feed.title.plainText() : "";
+ var desc = feed.subtitle ? feed.subtitle.plainText() : "";
+ feedService.addToClientReader(result.uri.spec, title, desc, feed.type);
+ return;
+ } catch(ex) { /* fallback to preview mode */ }
+ }
+ }
+ }
+
+ var ios =
+ Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ var chromeChannel;
+
+ // handling a redirect, hence forwarding the loadInfo from the old channel
+ // to the newchannel.
+ var oldChannel = this._request.QueryInterface(Ci.nsIChannel);
+ var loadInfo = oldChannel.loadInfo;
+
+ // If there was no automatic handler, or this was a podcast,
+ // photostream or some other kind of application, show the preview page
+ // if the parser returned a document.
+ if (result.doc) {
+
+ // Store the result in the result service so that the display
+ // page can access it.
+ feedService.addFeedResult(result);
+
+ // Now load the actual XUL document.
+ var aboutFeedsURI = ios.newURI("about:feeds", null, null);
+ chromeChannel = ios.newChannelFromURIWithLoadInfo(aboutFeedsURI, loadInfo);
+ chromeChannel.originalURI = result.uri;
+ chromeChannel.owner =
+ Services.scriptSecurityManager.getNoAppCodebasePrincipal(aboutFeedsURI);
+ } else {
+ chromeChannel = ios.newChannelFromURIWithLoadInfo(result.uri, loadInfo);
+ }
+
+ chromeChannel.loadGroup = this._request.loadGroup;
+ chromeChannel.asyncOpen2(this._listener);
+ }
+ finally {
+ this._releaseHandles();
+ }
+ },
+
+ /**
+ * See nsIStreamListener.idl
+ */
+ onDataAvailable: function FC_onDataAvailable(request, context, inputStream,
+ sourceOffset, count) {
+ if (this._processor)
+ this._processor.onDataAvailable(request, context, inputStream,
+ sourceOffset, count);
+ },
+
+ /**
+ * See nsIRequestObserver.idl
+ */
+ onStartRequest: function FC_onStartRequest(request, context) {
+ var channel = request.QueryInterface(Ci.nsIChannel);
+
+ // Check for a header that tells us there was no sniffing
+ // The value doesn't matter.
+ try {
+ var httpChannel = channel.QueryInterface(Ci.nsIHttpChannel);
+ // Make sure to check requestSucceeded before the potentially-throwing
+ // getResponseHeader.
+ if (!httpChannel.requestSucceeded) {
+ // Just give up, but don't forget to cancel the channel first!
+ request.cancel(Cr.NS_BINDING_ABORTED);
+ return;
+ }
+ var noSniff = httpChannel.getResponseHeader("X-Moz-Is-Feed");
+ }
+ catch (ex) {
+ this._sniffed = true;
+ }
+
+ this._request = request;
+
+ // Save and reset the forced state bit early, in case there's some kind of
+ // error.
+ var feedService =
+ Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+ this._forcePreviewPage = feedService.forcePreviewPage;
+ feedService.forcePreviewPage = false;
+
+ // Parse feed data as it comes in
+ this._processor =
+ Cc["@mozilla.org/feed-processor;1"].
+ createInstance(Ci.nsIFeedProcessor);
+ this._processor.listener = this;
+ this._processor.parseAsync(null, channel.URI);
+
+ this._processor.onStartRequest(request, context);
+ },
+
+ /**
+ * See nsIRequestObserver.idl
+ */
+ onStopRequest: function FC_onStopRequest(request, context, status) {
+ if (this._processor)
+ this._processor.onStopRequest(request, context, status);
+ },
+
+ /**
+ * See nsISupports.idl
+ */
+ QueryInterface: function FC_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIFeedResultListener) ||
+ iid.equals(Ci.nsIStreamConverter) ||
+ iid.equals(Ci.nsIStreamListener) ||
+ iid.equals(Ci.nsIRequestObserver)||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NO_INTERFACE;
+ },
+};
+
+/**
+ * Keeps parsed FeedResults around for use elsewhere in the UI after the stream
+ * converter completes.
+ */
+function FeedResultService() {
+}
+
+FeedResultService.prototype = {
+ classID: Components.ID("{2376201c-bbc6-472f-9b62-7548040a61c6}"),
+
+ /**
+ * A URI spec -> [nsIFeedResult] hash. We have to keep a list as the
+ * value in case the same URI is requested concurrently.
+ */
+ _results: { },
+
+ /**
+ * See nsIFeedResultService.idl
+ */
+ forcePreviewPage: false,
+
+ /**
+ * See nsIFeedResultService.idl
+ */
+ addToClientReader: function FRS_addToClientReader(spec, title, subtitle, feedType) {
+ var prefs =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+
+ var handler = safeGetCharPref(getPrefActionForType(feedType), "bookmarks");
+ if (handler == "ask" || handler == "reader")
+ handler = safeGetCharPref(getPrefReaderForType(feedType), "bookmarks");
+
+ switch (handler) {
+ case "client":
+ var clientApp = prefs.getComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile);
+
+ // For the benefit of applications that might know how to deal with more
+ // URLs than just feeds, send feed: URLs in the following format:
+ //
+ // http urls: replace scheme with feed, e.g.
+ // http://foo.com/index.rdf -> feed://foo.com/index.rdf
+ // other urls: prepend feed: scheme, e.g.
+ // https://foo.com/index.rdf -> feed:https://foo.com/index.rdf
+ var ios =
+ Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ var feedURI = ios.newURI(spec, null, null);
+ if (feedURI.schemeIs("http")) {
+ feedURI.scheme = "feed";
+ spec = feedURI.spec;
+ }
+ else
+ spec = "feed:" + spec;
+
+ // Retrieving the shell service might fail on some systems, most
+ // notably systems where GNOME is not installed.
+ try {
+ var ss =
+ Cc["@mozilla.org/browser/shell-service;1"].
+ getService(Ci.nsIShellService);
+ ss.openApplicationWithURI(clientApp, spec);
+ } catch(e) {
+ // If we couldn't use the shell service, fallback to using a
+ // nsIProcess instance
+ var p =
+ Cc["@mozilla.org/process/util;1"].
+ createInstance(Ci.nsIProcess);
+ p.init(clientApp);
+ p.run(false, [spec], 1);
+ }
+ break;
+
+ default:
+ // "web" should have been handled elsewhere
+ LOG("unexpected handler: " + handler);
+ // fall through
+ case "bookmarks":
+ var wm =
+ Cc["@mozilla.org/appshell/window-mediator;1"].
+ getService(Ci.nsIWindowMediator);
+ var topWindow = wm.getMostRecentWindow("navigator:browser");
+ topWindow.PlacesCommandHook.addLiveBookmark(spec, title, subtitle);
+ break;
+ }
+ },
+
+ /**
+ * See nsIFeedResultService.idl
+ */
+ addFeedResult: function FRS_addFeedResult(feedResult) {
+ NS_ASSERT(feedResult.uri != null, "null URI!");
+ NS_ASSERT(feedResult.uri != null, "null feedResult!");
+ var spec = feedResult.uri.spec;
+ if(!this._results[spec])
+ this._results[spec] = [];
+ this._results[spec].push(feedResult);
+ },
+
+ /**
+ * See nsIFeedResultService.idl
+ */
+ getFeedResult: function RFS_getFeedResult(uri) {
+ NS_ASSERT(uri != null, "null URI!");
+ var resultList = this._results[uri.spec];
+ for (var i in resultList) {
+ if (resultList[i].uri == uri)
+ return resultList[i];
+ }
+ return null;
+ },
+
+ /**
+ * See nsIFeedResultService.idl
+ */
+ removeFeedResult: function FRS_removeFeedResult(uri) {
+ NS_ASSERT(uri != null, "null URI!");
+ var resultList = this._results[uri.spec];
+ if (!resultList)
+ return;
+ var deletions = 0;
+ for (var i = 0; i < resultList.length; ++i) {
+ if (resultList[i].uri == uri) {
+ delete resultList[i];
+ ++deletions;
+ }
+ }
+
+ // send the holes to the end
+ resultList.sort();
+ // and trim the list
+ resultList.splice(resultList.length - deletions, deletions);
+ if (resultList.length == 0)
+ delete this._results[uri.spec];
+ },
+
+ createInstance: function FRS_createInstance(outer, iid) {
+ if (outer != null)
+ throw Cr.NS_ERROR_NO_AGGREGATION;
+ return this.QueryInterface(iid);
+ },
+
+ QueryInterface: function FRS_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIFeedResultService) ||
+ iid.equals(Ci.nsIFactory) ||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NOT_IMPLEMENTED;
+ },
+};
+
+/**
+ * A protocol handler that attempts to deal with the variant forms of feed:
+ * URIs that are actually either http or https.
+ */
+function GenericProtocolHandler() {
+}
+GenericProtocolHandler.prototype = {
+ _init: function GPH_init(scheme) {
+ var ios =
+ Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ this._http = ios.getProtocolHandler("http");
+ this._scheme = scheme;
+ },
+
+ get scheme() {
+ return this._scheme;
+ },
+
+ get protocolFlags() {
+ return this._http.protocolFlags;
+ },
+
+ get defaultPort() {
+ return this._http.defaultPort;
+ },
+
+ allowPort: function GPH_allowPort(port, scheme) {
+ return this._http.allowPort(port, scheme);
+ },
+
+ newURI: function GPH_newURI(spec, originalCharset, baseURI) {
+ // Feed URIs can be either nested URIs of the form feed:realURI (in which
+ // case we create a nested URI for the realURI) or feed://example.com, in
+ // which case we create a nested URI for the real protocol which is http.
+
+ var scheme = this._scheme + ":";
+ if (spec.substr(0, scheme.length) != scheme)
+ throw Cr.NS_ERROR_MALFORMED_URI;
+
+ var prefix = spec.substr(scheme.length, 2) == "//" ? "http:" : "";
+ var inner = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService).newURI(spec.replace(scheme, prefix),
+ originalCharset, baseURI);
+ var netutil = Cc["@mozilla.org/network/util;1"].getService(Ci.nsINetUtil);
+ const URI_INHERITS_SECURITY_CONTEXT = Ci.nsIProtocolHandler
+ .URI_INHERITS_SECURITY_CONTEXT;
+ if (netutil.URIChainHasFlags(inner, URI_INHERITS_SECURITY_CONTEXT))
+ throw Cr.NS_ERROR_MALFORMED_URI;
+
+ var uri = netutil.newSimpleNestedURI(inner);
+ uri.spec = inner.spec.replace(prefix, scheme);
+ return uri;
+ },
+
+ newChannel2: function GPH_newChannel(aUri, aLoadInfo) {
+ var inner = aUri.QueryInterface(Ci.nsINestedURI).innerURI;
+ var channel = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService).
+ newChannelFromURIWithLoadInfo(inner, aLoadInfo);
+
+ if (channel instanceof Components.interfaces.nsIHttpChannel)
+ // Set this so we know this is supposed to be a feed
+ channel.setRequestHeader("X-Moz-Is-Feed", "1", false);
+ channel.originalURI = aUri;
+ return channel;
+ },
+
+
+ QueryInterface: function GPH_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIProtocolHandler) ||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NO_INTERFACE;
+ }
+};
+
+function FeedProtocolHandler() {
+ this._init('feed');
+}
+FeedProtocolHandler.prototype = new GenericProtocolHandler();
+FeedProtocolHandler.prototype.classID = Components.ID("{4f91ef2e-57ba-472e-ab7a-b4999e42d6c0}");
+
+function PodCastProtocolHandler() {
+ this._init('pcast');
+}
+PodCastProtocolHandler.prototype = new GenericProtocolHandler();
+PodCastProtocolHandler.prototype.classID = Components.ID("{1c31ed79-accd-4b94-b517-06e0c81999d5}");
+
+var components = [FeedConverter,
+ FeedResultService,
+ FeedProtocolHandler,
+ PodCastProtocolHandler];
+
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);
diff --git a/components/feeds/FeedWriter.js b/components/feeds/FeedWriter.js
new file mode 100644
index 0000000..facde58
--- /dev/null
+++ b/components/feeds/FeedWriter.js
@@ -0,0 +1,1397 @@
+# -*- 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/.
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/NetUtil.jsm");
+
+const FEEDWRITER_CID = Components.ID("{49bb6593-3aff-4eb3-a068-2712c28bd58e}");
+const FEEDWRITER_CONTRACTID = "@mozilla.org/browser/feeds/result-writer;1";
+
+function LOG(str) {
+ var prefB = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+
+ var shouldLog = prefB.getBoolPref("feeds.log", false);
+
+ if (shouldLog)
+ dump("*** Feeds: " + str + "\n");
+}
+
+/**
+ * Wrapper function for nsIIOService::newURI.
+ * @param aURLSpec
+ * The URL string from which to create an nsIURI.
+ * @returns an nsIURI object, or null if the creation of the URI failed.
+ */
+function makeURI(aURLSpec, aCharset) {
+ var ios = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ try {
+ return ios.newURI(aURLSpec, aCharset, null);
+ } catch (ex) { }
+
+ return null;
+}
+
+const XML_NS = "http://www.w3.org/XML/1998/namespace";
+const HTML_NS = "http://www.w3.org/1999/xhtml";
+const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
+const TYPE_MAYBE_AUDIO_FEED = "application/vnd.mozilla.maybe.audio.feed";
+const TYPE_MAYBE_VIDEO_FEED = "application/vnd.mozilla.maybe.video.feed";
+const URI_BUNDLE = "chrome://browser/locale/feeds/subscribe.properties";
+
+const PREF_SELECTED_APP = "browser.feeds.handlers.application";
+const PREF_SELECTED_WEB = "browser.feeds.handlers.webservice";
+const PREF_SELECTED_ACTION = "browser.feeds.handler";
+const PREF_SELECTED_READER = "browser.feeds.handler.default";
+
+const PREF_VIDEO_SELECTED_APP = "browser.videoFeeds.handlers.application";
+const PREF_VIDEO_SELECTED_WEB = "browser.videoFeeds.handlers.webservice";
+const PREF_VIDEO_SELECTED_ACTION = "browser.videoFeeds.handler";
+const PREF_VIDEO_SELECTED_READER = "browser.videoFeeds.handler.default";
+
+const PREF_AUDIO_SELECTED_APP = "browser.audioFeeds.handlers.application";
+const PREF_AUDIO_SELECTED_WEB = "browser.audioFeeds.handlers.webservice";
+const PREF_AUDIO_SELECTED_ACTION = "browser.audioFeeds.handler";
+const PREF_AUDIO_SELECTED_READER = "browser.audioFeeds.handler.default";
+
+const PREF_SHOW_FIRST_RUN_UI = "browser.feeds.showFirstRunUI";
+
+const TITLE_ID = "feedTitleText";
+const SUBTITLE_ID = "feedSubtitleText";
+
+function getPrefAppForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_APP;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_APP;
+
+ default:
+ return PREF_SELECTED_APP;
+ }
+}
+
+function getPrefWebForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_WEB;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_WEB;
+
+ default:
+ return PREF_SELECTED_WEB;
+ }
+}
+
+function getPrefActionForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_ACTION;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_ACTION;
+
+ default:
+ return PREF_SELECTED_ACTION;
+ }
+}
+
+function getPrefReaderForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_READER;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_READER;
+
+ default:
+ return PREF_SELECTED_READER;
+ }
+}
+
+/**
+ * Converts a number of bytes to the appropriate unit that results in a
+ * number that needs fewer than 4 digits
+ *
+ * @return a pair: [new value with 3 sig. figs., its unit]
+ */
+function convertByteUnits(aBytes) {
+ var units = ["bytes", "kilobyte", "megabyte", "gigabyte"];
+ let unitIndex = 0;
+
+ // convert to next unit if it needs 4 digits (after rounding), but only if
+ // we know the name of the next unit
+ while ((aBytes >= 999.5) && (unitIndex < units.length - 1)) {
+ aBytes /= 1024;
+ unitIndex++;
+ }
+
+ // Get rid of insignificant bits by truncating to 1 or 0 decimal points
+ // 0 -> 0; 1.2 -> 1.2; 12.3 -> 12.3; 123.4 -> 123; 234.5 -> 235
+ aBytes = aBytes.toFixed((aBytes > 0) && (aBytes < 100) ? 1 : 0);
+
+ return [aBytes, units[unitIndex]];
+}
+
+function FeedWriter() {}
+FeedWriter.prototype = {
+ _mimeSvc : Cc["@mozilla.org/mime;1"].
+ getService(Ci.nsIMIMEService),
+
+ _getPropertyAsBag: function FW__getPropertyAsBag(container, property) {
+ return container.fields.getProperty(property).
+ QueryInterface(Ci.nsIPropertyBag2);
+ },
+
+ _getPropertyAsString: function FW__getPropertyAsString(container, property) {
+ try {
+ return container.fields.getPropertyAsAString(property);
+ }
+ catch (e) {
+ }
+ return "";
+ },
+
+ _setContentText: function FW__setContentText(id, text) {
+ this._contentSandbox.element = this._document.getElementById(id);
+ this._contentSandbox.textNode = text.createDocumentFragment(this._contentSandbox.element);
+ var codeStr =
+ "while (element.hasChildNodes()) " +
+ " element.removeChild(element.firstChild);" +
+ "element.appendChild(textNode);";
+ if (text.base) {
+ this._contentSandbox.spec = text.base.spec;
+ codeStr += "element.setAttributeNS('" + XML_NS + "', 'base', spec);";
+ }
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ this._contentSandbox.element = null;
+ this._contentSandbox.textNode = null;
+ },
+
+ /**
+ * Safely sets the href attribute on an anchor tag, providing the URI
+ * specified can be loaded according to rules.
+ * @param element
+ * The element to set a URI attribute on
+ * @param attribute
+ * The attribute of the element to set the URI to, e.g. href or src
+ * @param uri
+ * The URI spec to set as the href
+ */
+ _safeSetURIAttribute:
+ function FW__safeSetURIAttribute(element, attribute, uri) {
+ var secman = Cc["@mozilla.org/scriptsecuritymanager;1"].
+ getService(Ci.nsIScriptSecurityManager);
+ const flags = Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL;
+ try {
+ secman.checkLoadURIStrWithPrincipal(this._feedPrincipal, uri, flags);
+ // checkLoadURIStrWithPrincipal will throw if the link URI should not be
+ // loaded, either because our feedURI isn't allowed to load it or per
+ // the rules specified in |flags|, so we'll never "linkify" the link...
+ }
+ catch (e) {
+ // Not allowed to load this link because secman.checkLoadURIStr threw
+ return;
+ }
+
+ this._contentSandbox.element = element;
+ this._contentSandbox.uri = uri;
+ var codeStr = "element.setAttribute('" + attribute + "', uri);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * Use this sandbox to run any dom manipulation code on nodes which
+ * are already inserted into the content document.
+ */
+ __contentSandbox: null,
+ get _contentSandbox() {
+ // This whole sandbox setup is totally archaic. It was introduced in bug
+ // 360529, presumably before the existence of a solid security membrane,
+ // since all of the manipulation of content here should be made safe by
+ // Xrays.
+ // Now that anonymous content is no longer content-accessible, manipulating
+ // the xml stylesheet content can't be done from content anymore.
+ //
+ // The right solution would be to rip out all of this sandbox junk and
+ // manipulate the DOM directly, but that would require a lot of rewriting.
+ // So, for now, we just give the sandbox an nsExpandedPrincipal with [].
+ // This has the effect of giving it Xrays, and making it same-origin with
+ // the XBL scope, thereby letting it manipulate anonymous content.
+ if (!this.__contentSandbox)
+ this.__contentSandbox = new Cu.Sandbox([this._window],
+ {sandboxName: 'FeedWriter'});
+
+ return this.__contentSandbox;
+ },
+
+ /**
+ * Calls doCommand for a given XUL element within the context of the
+ * content document.
+ *
+ * @param aElement
+ * the XUL element to call doCommand() on.
+ */
+ _safeDoCommand: function FW___safeDoCommand(aElement) {
+ this._contentSandbox.element = aElement;
+ Cu.evalInSandbox("element.doCommand();", this._contentSandbox);
+ this._contentSandbox.element = null;
+ },
+
+ __faviconService: null,
+ get _faviconService() {
+ if (!this.__faviconService)
+ this.__faviconService = Cc["@mozilla.org/browser/favicon-service;1"].
+ getService(Ci.nsIFaviconService);
+
+ return this.__faviconService;
+ },
+
+ __bundle: null,
+ get _bundle() {
+ if (!this.__bundle) {
+ this.__bundle = Cc["@mozilla.org/intl/stringbundle;1"].
+ getService(Ci.nsIStringBundleService).
+ createBundle(URI_BUNDLE);
+ }
+ return this.__bundle;
+ },
+
+ _getFormattedString: function FW__getFormattedString(key, params) {
+ return this._bundle.formatStringFromName(key, params, params.length);
+ },
+
+ _getString: function FW__getString(key) {
+ return this._bundle.GetStringFromName(key);
+ },
+
+ /* Magic helper methods to be used instead of xbl properties */
+ _getSelectedItemFromMenulist: function FW__getSelectedItemFromList(aList) {
+ var node = aList.firstChild.firstChild;
+ while (node) {
+ if (node.localName == "menuitem" && node.getAttribute("selected") == "true")
+ return node;
+
+ node = node.nextSibling;
+ }
+
+ return null;
+ },
+
+ _setCheckboxCheckedState: function FW__setCheckboxCheckedState(aCheckbox, aValue) {
+ // see checkbox.xml, xbl bindings are not applied within the sandbox!
+ this._contentSandbox.checkbox = aCheckbox;
+ var codeStr;
+ var change = (aValue != (aCheckbox.getAttribute('checked') == 'true'));
+ if (aValue)
+ codeStr = "checkbox.setAttribute('checked', 'true'); ";
+ else
+ codeStr = "checkbox.removeAttribute('checked'); ";
+
+ if (change) {
+ this._contentSandbox.document = this._document;
+ codeStr += "var event = document.createEvent('Events'); " +
+ "event.initEvent('CheckboxStateChange', true, true);" +
+ "checkbox.dispatchEvent(event);"
+ }
+
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * Returns a date suitable for displaying in the feed preview.
+ * If the date cannot be parsed, the return value is "false".
+ * @param dateString
+ * A date as extracted from a feed entry. (entry.updated)
+ */
+ _parseDate: function FW__parseDate(dateString) {
+ // Convert the date into the user's local time zone
+ dateObj = new Date(dateString);
+
+ // Make sure the date we're given is valid.
+ if (!dateObj.getTime())
+ return false;
+
+ var dateService = Cc["@mozilla.org/intl/scriptabledateformat;1"].
+ getService(Ci.nsIScriptableDateFormat);
+ return dateService.FormatDateTime("", dateService.dateFormatLong, dateService.timeFormatNoSeconds,
+ dateObj.getFullYear(), dateObj.getMonth()+1, dateObj.getDate(),
+ dateObj.getHours(), dateObj.getMinutes(), dateObj.getSeconds());
+ },
+
+ /**
+ * Returns the feed type.
+ */
+ __feedType: null,
+ _getFeedType: function FW__getFeedType() {
+ if (this.__feedType != null)
+ return this.__feedType;
+
+ try {
+ // grab the feed because it's got the feed.type in it.
+ var container = this._getContainer();
+ var feed = container.QueryInterface(Ci.nsIFeed);
+ this.__feedType = feed.type;
+ return feed.type;
+ } catch (ex) { }
+
+ return Ci.nsIFeed.TYPE_FEED;
+ },
+
+ /**
+ * Maps a feed type to a maybe-feed mimetype.
+ */
+ _getMimeTypeForFeedType: function FW__getMimeTypeForFeedType() {
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return TYPE_MAYBE_VIDEO_FEED;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return TYPE_MAYBE_AUDIO_FEED;
+
+ default:
+ return TYPE_MAYBE_FEED;
+ }
+ },
+
+ /**
+ * Writes the feed title into the preview document.
+ * @param container
+ * The feed container
+ */
+ _setTitleText: function FW__setTitleText(container) {
+ if (container.title) {
+ var title = container.title.plainText();
+ this._setContentText(TITLE_ID, container.title);
+ this._contentSandbox.document = this._document;
+ this._contentSandbox.title = title;
+ var codeStr = "document.title = title;"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+
+ var feed = container.QueryInterface(Ci.nsIFeed);
+ if (feed && feed.subtitle)
+ this._setContentText(SUBTITLE_ID, container.subtitle);
+ },
+
+ /**
+ * Writes the title image into the preview document if one is present.
+ * @param container
+ * The feed container
+ */
+ _setTitleImage: function FW__setTitleImage(container) {
+ try {
+ var parts = container.image;
+
+ // Set up the title image (supplied by the feed)
+ var feedTitleImage = this._document.getElementById("feedTitleImage");
+ this._safeSetURIAttribute(feedTitleImage, "src",
+ parts.getPropertyAsAString("url"));
+
+ // Set up the title image link
+ var feedTitleLink = this._document.getElementById("feedTitleLink");
+
+ var titleText = this._getFormattedString("linkTitleTextFormat",
+ [parts.getPropertyAsAString("title")]);
+ this._contentSandbox.feedTitleLink = feedTitleLink;
+ this._contentSandbox.titleText = titleText;
+ this._contentSandbox.feedTitleText = this._document.getElementById("feedTitleText");
+ this._contentSandbox.titleImageWidth = parseInt(parts.getPropertyAsAString("width")) + 15;
+
+ // Fix the margin on the main title, so that the image doesn't run over
+ // the underline
+ var codeStr = "feedTitleLink.setAttribute('title', titleText); " +
+ "feedTitleText.style.marginRight = titleImageWidth + 'px';";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ this._contentSandbox.feedTitleLink = null;
+ this._contentSandbox.titleText = null;
+ this._contentSandbox.feedTitleText = null;
+ this._contentSandbox.titleImageWidth = null;
+
+ this._safeSetURIAttribute(feedTitleLink, "href",
+ parts.getPropertyAsAString("link"));
+ }
+ catch (e) {
+ LOG("Failed to set Title Image (this is benign): " + e);
+ }
+ },
+
+ /**
+ * Writes all entries contained in the feed.
+ * @param container
+ * The container of entries in the feed
+ */
+ _writeFeedContent: function FW__writeFeedContent(container) {
+ // Build the actual feed content
+ var feed = container.QueryInterface(Ci.nsIFeed);
+ if (feed.items.length == 0)
+ return;
+
+ this._contentSandbox.feedContent =
+ this._document.getElementById("feedContent");
+
+ for (var i = 0; i < feed.items.length; ++i) {
+ var entry = feed.items.queryElementAt(i, Ci.nsIFeedEntry);
+ entry.QueryInterface(Ci.nsIFeedContainer);
+
+ var entryContainer = this._document.createElementNS(HTML_NS, "div");
+ entryContainer.className = "entry";
+
+ // If the entry has a title, make it a link
+ if (entry.title) {
+ var a = this._document.createElementNS(HTML_NS, "a");
+ var span = this._document.createElementNS(HTML_NS, "span");
+ a.appendChild(span);
+ if (entry.title.base)
+ span.setAttributeNS(XML_NS, "base", entry.title.base.spec);
+ span.appendChild(entry.title.createDocumentFragment(a));
+
+ // Entries are not required to have links, so entry.link can be null.
+ if (entry.link)
+ this._safeSetURIAttribute(a, "href", entry.link.spec);
+
+ var title = this._document.createElementNS(HTML_NS, "h3");
+ title.appendChild(a);
+
+ var lastUpdated = this._parseDate(entry.updated);
+ if (lastUpdated) {
+ var dateDiv = this._document.createElementNS(HTML_NS, "div");
+ dateDiv.className = "lastUpdated";
+ dateDiv.textContent = lastUpdated;
+ title.appendChild(dateDiv);
+ }
+
+ entryContainer.appendChild(title);
+ }
+
+ var body = this._document.createElementNS(HTML_NS, "div");
+ var summary = entry.summary || entry.content;
+ var docFragment = null;
+ if (summary) {
+ if (summary.base)
+ body.setAttributeNS(XML_NS, "base", summary.base.spec);
+ else
+ LOG("no base?");
+ docFragment = summary.createDocumentFragment(body);
+ if (docFragment)
+ body.appendChild(docFragment);
+
+ // If the entry doesn't have a title, append a # permalink
+ // See http://scripting.com/rss.xml for an example
+ if (!entry.title && entry.link) {
+ var a = this._document.createElementNS(HTML_NS, "a");
+ a.appendChild(this._document.createTextNode("#"));
+ this._safeSetURIAttribute(a, "href", entry.link.spec);
+ body.appendChild(this._document.createTextNode(" "));
+ body.appendChild(a);
+ }
+
+ }
+ body.className = "feedEntryContent";
+ entryContainer.appendChild(body);
+
+ if (entry.enclosures && entry.enclosures.length > 0) {
+ var enclosuresDiv = this._buildEnclosureDiv(entry);
+ entryContainer.appendChild(enclosuresDiv);
+ }
+
+ this._contentSandbox.entryContainer = entryContainer;
+ this._contentSandbox.clearDiv =
+ this._document.createElementNS(HTML_NS, "div");
+ this._contentSandbox.clearDiv.style.clear = "both";
+
+ var codeStr = "feedContent.appendChild(entryContainer); " +
+ "feedContent.appendChild(clearDiv);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+
+ this._contentSandbox.feedContent = null;
+ this._contentSandbox.entryContainer = null;
+ this._contentSandbox.clearDiv = null;
+ },
+
+ /**
+ * Takes a url to a media item and returns the best name it can come up with.
+ * Frequently this is the filename portion (e.g. passing in
+ * http://example.com/foo.mpeg would return "foo.mpeg"), but in more complex
+ * cases, this will return the entire url (e.g. passing in
+ * http://example.com/somedirectory/ would return
+ * http://example.com/somedirectory/).
+ * @param aURL
+ * The URL string from which to create a display name
+ * @returns a string
+ */
+ _getURLDisplayName: function FW__getURLDisplayName(aURL) {
+ var url = makeURI(aURL);
+ url.QueryInterface(Ci.nsIURL);
+ if (url == null || url.fileName.length == 0)
+ return decodeURIComponent(aURL);
+
+ return decodeURIComponent(url.fileName);
+ },
+
+ /**
+ * Takes a FeedEntry with enclosures, generates the HTML code to represent
+ * them, and returns that.
+ * @param entry
+ * FeedEntry with enclosures
+ * @returns element
+ */
+ _buildEnclosureDiv: function FW__buildEnclosureDiv(entry) {
+ var enclosuresDiv = this._document.createElementNS(HTML_NS, "div");
+ enclosuresDiv.className = "enclosures";
+
+ enclosuresDiv.appendChild(this._document.createTextNode(this._getString("mediaLabel")));
+
+ var roundme = function(n) {
+ return (Math.round(n * 100) / 100).toLocaleString();
+ }
+
+ for (var i_enc = 0; i_enc < entry.enclosures.length; ++i_enc) {
+ var enc = entry.enclosures.queryElementAt(i_enc, Ci.nsIWritablePropertyBag2);
+
+ if (!(enc.hasKey("url")))
+ continue;
+
+ var enclosureDiv = this._document.createElementNS(HTML_NS, "div");
+ enclosureDiv.setAttribute("class", "enclosure");
+
+ var mozicon = "moz-icon://.txt?size=16";
+ var type_text = null;
+ var size_text = null;
+
+ if (enc.hasKey("type")) {
+ type_text = enc.get("type");
+ try {
+ var handlerInfoWrapper = this._mimeSvc.getFromTypeAndExtension(enc.get("type"), null);
+
+ if (handlerInfoWrapper)
+ type_text = handlerInfoWrapper.description;
+
+ if (type_text && type_text.length > 0)
+ mozicon = "moz-icon://goat?size=16&contentType=" + enc.get("type");
+
+ } catch (ex) { }
+
+ }
+
+ if (enc.hasKey("length") && /^[0-9]+$/.test(enc.get("length"))) {
+ var enc_size = convertByteUnits(parseInt(enc.get("length")));
+
+ var size_text = this._getFormattedString("enclosureSizeText",
+ [enc_size[0], this._getString(enc_size[1])]);
+ }
+
+ var iconimg = this._document.createElementNS(HTML_NS, "img");
+ iconimg.setAttribute("src", mozicon);
+ iconimg.setAttribute("class", "type-icon");
+ enclosureDiv.appendChild(iconimg);
+
+ enclosureDiv.appendChild(this._document.createTextNode( " " ));
+
+ var enc_href = this._document.createElementNS(HTML_NS, "a");
+ enc_href.appendChild(this._document.createTextNode(this._getURLDisplayName(enc.get("url"))));
+ this._safeSetURIAttribute(enc_href, "href", enc.get("url"));
+ enclosureDiv.appendChild(enc_href);
+
+ if (type_text && size_text)
+ enclosureDiv.appendChild(this._document.createTextNode( " (" + type_text + ", " + size_text + ")"));
+
+ else if (type_text)
+ enclosureDiv.appendChild(this._document.createTextNode( " (" + type_text + ")"))
+
+ else if (size_text)
+ enclosureDiv.appendChild(this._document.createTextNode( " (" + size_text + ")"))
+
+ enclosuresDiv.appendChild(enclosureDiv);
+ }
+
+ return enclosuresDiv;
+ },
+
+ /**
+ * Gets a valid nsIFeedContainer object from the parsed nsIFeedResult.
+ * Displays error information if there was one.
+ * @param result
+ * The parsed feed result
+ * @returns A valid nsIFeedContainer object containing the contents of
+ * the feed.
+ */
+ _getContainer: function FW__getContainer(result) {
+ var feedService =
+ Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+
+ result = null;
+ try {
+ result =
+ feedService.getFeedResult(this._getOriginalURI(this._window));
+ }
+ catch (e) {
+ // Ignore.
+ }
+
+ if (!result) {
+ LOG("Subscribe Preview: feed not available?!");
+ return null;
+ }
+
+ if (result.bozo) {
+ LOG("Subscribe Preview: feed result is bozo?!");
+ }
+
+ try {
+ var container = result.doc;
+ }
+ catch (e) {
+ LOG("Subscribe Preview: no result.doc? Why didn't the original reload?");
+ return null;
+ }
+ return container;
+ },
+
+ /**
+ * Get the human-readable display name of a file. This could be the
+ * application name.
+ * @param file
+ * A nsIFile to look up the name of
+ * @returns The display name of the application represented by the file.
+ */
+ _getFileDisplayName: function FW__getFileDisplayName(file) {
+#ifdef XP_WIN
+ if (file instanceof Ci.nsILocalFileWin) {
+ try {
+ return file.getVersionInfoField("FileDescription");
+ } catch (e) {}
+ }
+#endif
+#ifdef XP_MACOSX
+ if (file instanceof Ci.nsILocalFileMac) {
+ try {
+ return file.bundleDisplayName;
+ } catch (e) {}
+ }
+#endif
+ return file.leafName;
+ },
+
+ /**
+ * Helper method to set the selected application and system default
+ * reader menuitems details from a file object
+ * @param aMenuItem
+ * The menuitem on which the attributes should be set
+ * @param aFile
+ * The menuitem's associated file
+ */
+ _initMenuItemWithFile: function(aMenuItem, aFile) {
+ this._contentSandbox.menuitem = aMenuItem;
+ this._contentSandbox.label = this._getFileDisplayName(aFile);
+ // For security reasons, access to moz-icon:file://... URIs is
+ // no longer allowed (indirect file system access from content).
+ // We use a dummy application instead to get a generic icon.
+ this._contentSandbox.image = "moz-icon://dummy.exe?size=16";
+ var codeStr = "menuitem.setAttribute('label', label); " +
+ "menuitem.setAttribute('image', image);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * Helper method to get an element in the XBL binding where the handler
+ * selection UI lives
+ */
+ _getUIElement: function FW__getUIElement(id) {
+ return this._document.getAnonymousElementByAttribute(
+ this._document.getElementById("feedSubscribeLine"), "anonid", id);
+ },
+
+ /**
+ * Displays a prompt from which the user may choose a (client) feed reader.
+ * @param aCallback the callback method, passes in true if a feed reader was
+ * selected, false otherwise.
+ */
+ _chooseClientApp: function FW__chooseClientApp(aCallback) {
+ try {
+ let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
+ let fpCallback = function fpCallback_done(aResult) {
+ if (aResult == Ci.nsIFilePicker.returnOK) {
+ this._selectedApp = fp.file;
+ if (this._selectedApp) {
+ // XXXben - we need to compare this with the running instance
+ // executable just don't know how to do that via script
+ // XXXmano TBD: can probably add this to nsIShellService
+#ifdef XP_WIN
+#expand if (fp.file.leafName != "__MOZ_APP_NAME__.exe") {
+#else
+#ifdef XP_MACOSX
+#expand if (fp.file.leafName != "__MOZ_MACBUNDLE_NAME__") {
+#else
+#expand if (fp.file.leafName != "__MOZ_APP_NAME__-bin") {
+#endif
+#endif
+ this._initMenuItemWithFile(this._contentSandbox.selectedAppMenuItem,
+ this._selectedApp);
+
+ // Show and select the selected application menuitem
+ let codeStr = "selectedAppMenuItem.hidden = false;" +
+ "selectedAppMenuItem.doCommand();"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ if (aCallback) {
+ aCallback(true);
+ return;
+ }
+ }
+ }
+ }
+ if (aCallback) {
+ aCallback(false);
+ }
+ }.bind(this);
+
+ fp.init(this._window, this._getString("chooseApplicationDialogTitle"),
+ Ci.nsIFilePicker.modeOpen);
+ fp.appendFilters(Ci.nsIFilePicker.filterApps);
+ fp.open(fpCallback);
+ } catch(ex) {
+ }
+ },
+
+ _setAlwaysUseCheckedState: function FW__setAlwaysUseCheckedState(feedType) {
+ var checkbox = this._getUIElement("alwaysUse");
+ if (checkbox) {
+ var alwaysUse = false;
+ try {
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ if (prefs.getCharPref(getPrefActionForType(feedType)) != "ask")
+ alwaysUse = true;
+ }
+ catch(ex) { }
+ this._setCheckboxCheckedState(checkbox, alwaysUse);
+ }
+ },
+
+ _setSubscribeUsingLabel: function FW__setSubscribeUsingLabel() {
+ var stringLabel = "subscribeFeedUsing";
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ stringLabel = "subscribeVideoPodcastUsing";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ stringLabel = "subscribeAudioPodcastUsing";
+ break;
+ }
+
+ this._contentSandbox.subscribeUsing =
+ this._getUIElement("subscribeUsingDescription");
+ this._contentSandbox.label = this._getString(stringLabel);
+ var codeStr = "subscribeUsing.setAttribute('value', label);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ _setAlwaysUseLabel: function FW__setAlwaysUseLabel() {
+ var checkbox = this._getUIElement("alwaysUse");
+ if (checkbox) {
+ if (this._handlersMenuList) {
+ var handlerName = this._getSelectedItemFromMenulist(this._handlersMenuList)
+ .getAttribute("label");
+ var stringLabel = "alwaysUseForFeeds";
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ stringLabel = "alwaysUseForVideoPodcasts";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ stringLabel = "alwaysUseForAudioPodcasts";
+ break;
+ }
+
+ this._contentSandbox.checkbox = checkbox;
+ this._contentSandbox.label = this._getFormattedString(stringLabel, [handlerName]);
+
+ var codeStr = "checkbox.setAttribute('label', label);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+ }
+ },
+
+ // nsIDomEventListener
+ handleEvent: function(event) {
+ if (event.target.ownerDocument != this._document) {
+ LOG("FeedWriter.handleEvent: Someone passed the feed writer as a listener to the events of another document!");
+ return;
+ }
+
+ if (event.type == "command") {
+ switch (event.target.getAttribute("anonid")) {
+ case "subscribeButton":
+ this.subscribe();
+ break;
+ case "chooseApplicationMenuItem":
+ /* Bug 351263: Make sure to not steal focus if the "Choose
+ * Application" item is being selected with the keyboard. We do this
+ * by ignoring command events while the dropdown is closed (user
+ * arrowing through the combobox), but handling them while the
+ * combobox dropdown is open (user pressed enter when an item was
+ * selected). If we don't show the filepicker here, it will be shown
+ * when clicking "Subscribe Now".
+ */
+ var popupbox = this._handlersMenuList.firstChild.boxObject;
+ if (popupbox.popupState == "hiding") {
+ this._chooseClientApp(function(aResult) {
+ if (!aResult) {
+ // Select the (per-prefs) selected handler if no application
+ // was selected
+ this._setSelectedHandler(this._getFeedType());
+ }
+ }.bind(this));
+ }
+ break;
+ default:
+ this._setAlwaysUseLabel();
+ }
+ }
+ },
+
+ _setSelectedHandler: function FW__setSelectedHandler(feedType) {
+ var prefs =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+
+ var handler = prefs.getCharPref(getPrefReaderForType(feedType), "bookmarks");
+
+ switch (handler) {
+ case "web": {
+ if (this._handlersMenuList) {
+ var url;
+ try {
+ url = prefs.getComplexValue(getPrefWebForType(feedType), Ci.nsISupportsString).data;
+ } catch (ex) {
+ LOG("FeedWriter._setSelectedHandler: invalid or no handler in prefs");
+ return;
+ }
+ var handlers =
+ this._handlersMenuList.getElementsByAttribute("webhandlerurl", url);
+ if (handlers.length == 0) {
+ LOG("FeedWriter._setSelectedHandler: selected web handler isn't in the menulist")
+ return;
+ }
+
+ this._safeDoCommand(handlers[0]);
+ }
+ break;
+ }
+ case "client": {
+ try {
+ this._selectedApp =
+ prefs.getComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile);
+ }
+ catch(ex) {
+ this._selectedApp = null;
+ }
+
+ if (this._selectedApp) {
+ this._initMenuItemWithFile(this._contentSandbox.selectedAppMenuItem,
+ this._selectedApp);
+ var codeStr = "selectedAppMenuItem.hidden = false; " +
+ "selectedAppMenuItem.doCommand(); ";
+
+ // Only show the default reader menuitem if the default reader
+ // isn't the selected application
+ if (this._defaultSystemReader) {
+ var shouldHide =
+ this._defaultSystemReader.path == this._selectedApp.path;
+ codeStr += "defaultHandlerMenuItem.hidden = " + shouldHide + ";"
+ }
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ break;
+ }
+ }
+ case "bookmarks":
+ default: {
+ var liveBookmarksMenuItem = this._getUIElement("liveBookmarksMenuItem");
+ if (liveBookmarksMenuItem)
+ this._safeDoCommand(liveBookmarksMenuItem);
+ }
+ }
+ },
+
+ _initSubscriptionUI: function FW__initSubscriptionUI() {
+ var handlersMenuPopup = this._getUIElement("handlersMenuPopup");
+ if (!handlersMenuPopup)
+ return;
+
+ var feedType = this._getFeedType();
+ var codeStr;
+
+ // change the background
+ var header = this._document.getElementById("feedHeader");
+ this._contentSandbox.header = header;
+ switch (feedType) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ codeStr = "header.className = 'videoPodcastBackground'; ";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ codeStr = "header.className = 'audioPodcastBackground'; ";
+ break;
+
+ default:
+ codeStr = "header.className = 'feedBackground'; ";
+ }
+
+ var liveBookmarksMenuItem = this._getUIElement("liveBookmarksMenuItem");
+
+ // Last-selected application
+ var menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "selectedAppMenuItem");
+ menuItem.className = "menuitem-iconic selectedAppMenuItem";
+ menuItem.setAttribute("handlerType", "client");
+ try {
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ this._selectedApp = prefs.getComplexValue(getPrefAppForType(feedType),
+ Ci.nsILocalFile);
+
+ if (this._selectedApp.exists())
+ this._initMenuItemWithFile(menuItem, this._selectedApp);
+ else {
+ // Hide the menuitem if the last selected application doesn't exist
+ menuItem.setAttribute("hidden", true);
+ }
+ }
+ catch(ex) {
+ // Hide the menuitem until an application is selected
+ menuItem.setAttribute("hidden", true);
+ }
+ this._contentSandbox.handlersMenuPopup = handlersMenuPopup;
+ this._contentSandbox.selectedAppMenuItem = menuItem;
+
+ codeStr += "handlersMenuPopup.appendChild(selectedAppMenuItem); ";
+
+ // List the default feed reader
+ try {
+ this._defaultSystemReader = Cc["@mozilla.org/browser/shell-service;1"].
+ getService(Ci.nsIShellService).
+ defaultFeedReader;
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "defaultHandlerMenuItem");
+ menuItem.className = "menuitem-iconic defaultHandlerMenuItem";
+ menuItem.setAttribute("handlerType", "client");
+
+ this._initMenuItemWithFile(menuItem, this._defaultSystemReader);
+
+ // Hide the default reader item if it points to the same application
+ // as the last-selected application
+ if (this._selectedApp &&
+ this._selectedApp.path == this._defaultSystemReader.path)
+ menuItem.hidden = true;
+ }
+ catch(ex) { menuItem = null; /* no default reader */ }
+
+ if (menuItem) {
+ this._contentSandbox.defaultHandlerMenuItem = menuItem;
+ codeStr += "handlersMenuPopup.appendChild(defaultHandlerMenuItem); ";
+ }
+
+ // "Choose Application..." menuitem
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "chooseApplicationMenuItem");
+ menuItem.className = "menuitem-iconic chooseApplicationMenuItem";
+ menuItem.setAttribute("label", this._getString("chooseApplicationMenuItem"));
+
+ this._contentSandbox.chooseAppMenuItem = menuItem;
+ codeStr += "handlersMenuPopup.appendChild(chooseAppMenuItem); ";
+
+ // separator
+ this._contentSandbox.chooseAppSep =
+ menuItem = liveBookmarksMenuItem.nextSibling.cloneNode(false);
+ codeStr += "handlersMenuPopup.appendChild(chooseAppSep); ";
+
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+
+ // List of web handlers
+ var wccr = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+ getService(Ci.nsIWebContentConverterService);
+ var handlers = wccr.getContentHandlers(this._getMimeTypeForFeedType(feedType));
+ if (handlers.length != 0) {
+ for (var i = 0; i < handlers.length; ++i) {
+ if (!handlers[i].uri) {
+ LOG("Handler with name " + handlers[i].name + " has no URI!? Skipping...");
+ continue;
+ }
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.className = "menuitem-iconic";
+ menuItem.setAttribute("label", handlers[i].name);
+ menuItem.setAttribute("handlerType", "web");
+ menuItem.setAttribute("webhandlerurl", handlers[i].uri);
+ this._contentSandbox.menuItem = menuItem;
+ codeStr = "handlersMenuPopup.appendChild(menuItem);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+
+ this._setFaviconForWebReader(handlers[i].uri, menuItem);
+ }
+ this._contentSandbox.menuItem = null;
+ }
+
+ this._setSelectedHandler(feedType);
+
+ // "Subscribe using..."
+ this._setSubscribeUsingLabel();
+
+ // "Always use..." checkbox initial state
+ this._setAlwaysUseCheckedState(feedType);
+ this._setAlwaysUseLabel();
+
+ // We update the "Always use.." checkbox label whenever the selected item
+ // in the list is changed
+ handlersMenuPopup.addEventListener("command", this, false);
+
+ // Set up the "Subscribe Now" button
+ this._getUIElement("subscribeButton")
+ .addEventListener("command", this, false);
+
+ // first-run ui
+ var showFirstRunUI = prefs.getBoolPref(PREF_SHOW_FIRST_RUN_UI, true);
+ if (showFirstRunUI) {
+ var textfeedinfo1, textfeedinfo2;
+ switch (feedType) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ textfeedinfo1 = "feedSubscriptionVideoPodcast1";
+ textfeedinfo2 = "feedSubscriptionVideoPodcast2";
+ break;
+ case Ci.nsIFeed.TYPE_AUDIO:
+ textfeedinfo1 = "feedSubscriptionAudioPodcast1";
+ textfeedinfo2 = "feedSubscriptionAudioPodcast2";
+ break;
+ default:
+ textfeedinfo1 = "feedSubscriptionFeed1";
+ textfeedinfo2 = "feedSubscriptionFeed2";
+ }
+
+ this._contentSandbox.feedinfo1 =
+ this._document.getElementById("feedSubscriptionInfo1");
+ this._contentSandbox.feedinfo1Str = this._getString(textfeedinfo1);
+ this._contentSandbox.feedinfo2 =
+ this._document.getElementById("feedSubscriptionInfo2");
+ this._contentSandbox.feedinfo2Str = this._getString(textfeedinfo2);
+ this._contentSandbox.header = header;
+ codeStr = "feedinfo1.textContent = feedinfo1Str; " +
+ "feedinfo2.textContent = feedinfo2Str; " +
+ "header.setAttribute('firstrun', 'true');"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ prefs.setBoolPref(PREF_SHOW_FIRST_RUN_UI, false);
+ }
+ },
+
+ /**
+ * Returns the original URI object of the feed and ensures that this
+ * component is only ever invoked from the preview document.
+ * @param aWindow
+ * The window of the document invoking the BrowserFeedWriter
+ */
+ _getOriginalURI: function FW__getOriginalURI(aWindow) {
+ var chan = aWindow.QueryInterface(Ci.nsIInterfaceRequestor).
+ getInterface(Ci.nsIWebNavigation).
+ QueryInterface(Ci.nsIDocShell).currentDocumentChannel;
+
+ var nullPrincipal = Cc["@mozilla.org/nullprincipal;1"].
+ createInstance(Ci.nsIPrincipal);
+
+ // this channel is not going to be openend, use a nullPrincipal
+ // and the most restrctive securityFlag.
+ let resolvedURI = NetUtil.newChannel({
+ uri: "about:feeds",
+ loadingPrincipal: nullPrincipal,
+ securityFlags: Ci.nsILoadInfo.SEC_REQUIRE_SAME_ORIGIN_DATA_IS_BLOCKED,
+ contentPolicyType: Ci.nsIContentPolicy.TYPE_OTHER
+ }).URI;
+
+ if (resolvedURI.equals(chan.URI))
+ return chan.originalURI;
+
+ return null;
+ },
+
+ _window: null,
+ _document: null,
+ _feedURI: null,
+ _feedPrincipal: null,
+ _handlersMenuList: null,
+
+ // BrowserFeedWriter WebIDL methods
+ init: function FW_init(aWindow) {
+ var window = aWindow;
+ this._feedURI = this._getOriginalURI(window);
+ if (!this._feedURI)
+ return;
+
+ this._window = window;
+ this._document = window.document;
+ this._document.getElementById("feedSubscribeLine").offsetTop;
+ this._handlersMenuList = this._getUIElement("handlersMenuList");
+
+ var secman = Cc["@mozilla.org/scriptsecuritymanager;1"].
+ getService(Ci.nsIScriptSecurityManager);
+ this._feedPrincipal = secman.createCodebasePrincipal(this._feedURI, {});
+
+ LOG("Subscribe Preview: feed uri = " + this._window.location.href);
+
+ // Set up the subscription UI
+ this._initSubscriptionUI();
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ prefs.addObserver(PREF_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_SELECTED_APP, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_APP, this, false);
+
+ prefs.addObserver(PREF_AUDIO_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_APP, this, false);
+ },
+
+ writeContent: function FW_writeContent() {
+ if (!this._window)
+ return;
+
+ try {
+ // Set up the feed content
+ var container = this._getContainer();
+ if (!container)
+ return;
+
+ this._setTitleText(container);
+ this._setTitleImage(container);
+ this._writeFeedContent(container);
+ }
+ finally {
+ this._removeFeedFromCache();
+ }
+ },
+
+ close: function FW_close() {
+ this._getUIElement("handlersMenuPopup")
+ .removeEventListener("command", this, false);
+ this._getUIElement("subscribeButton")
+ .removeEventListener("command", this, false);
+ this._document = null;
+ this._window = null;
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ prefs.removeObserver(PREF_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_SELECTED_READER, this);
+ prefs.removeObserver(PREF_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_SELECTED_APP, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_READER, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_APP, this);
+
+ prefs.removeObserver(PREF_AUDIO_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_READER, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_APP, this);
+
+ this._removeFeedFromCache();
+ this.__faviconService = null;
+ this.__bundle = null;
+ this._feedURI = null;
+ this.__contentSandbox = null;
+ },
+
+ _removeFeedFromCache: function FW__removeFeedFromCache() {
+ if (this._feedURI) {
+ var feedService = Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+ feedService.removeFeedResult(this._feedURI);
+ this._feedURI = null;
+ }
+ },
+
+ subscribe: function FW_subscribe() {
+ var feedType = this._getFeedType();
+
+ // Subscribe to the feed using the selected handler and save prefs
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ var defaultHandler = "reader";
+ var useAsDefault = this._getUIElement("alwaysUse").getAttribute("checked");
+
+ var selectedItem = this._getSelectedItemFromMenulist(this._handlersMenuList);
+ let subscribeCallback = function() {
+ if (selectedItem.hasAttribute("webhandlerurl")) {
+ var webURI = selectedItem.getAttribute("webhandlerurl");
+ prefs.setCharPref(getPrefReaderForType(feedType), "web");
+
+ var supportsString = Cc["@mozilla.org/supports-string;1"].
+ createInstance(Ci.nsISupportsString);
+ supportsString.data = webURI;
+ prefs.setComplexValue(getPrefWebForType(feedType), Ci.nsISupportsString,
+ supportsString);
+
+ var wccr = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+ getService(Ci.nsIWebContentConverterService);
+ var handler = wccr.getWebContentHandlerByURI(this._getMimeTypeForFeedType(feedType), webURI);
+ if (handler) {
+ if (useAsDefault) {
+ wccr.setAutoHandler(this._getMimeTypeForFeedType(feedType), handler);
+ }
+
+ this._window.location.href = handler.getHandlerURI(this._window.location.href);
+ }
+ } else {
+ switch (selectedItem.getAttribute("anonid")) {
+ case "selectedAppMenuItem":
+ prefs.setComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile,
+ this._selectedApp);
+ prefs.setCharPref(getPrefReaderForType(feedType), "client");
+ break;
+ case "defaultHandlerMenuItem":
+ prefs.setComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile,
+ this._defaultSystemReader);
+ prefs.setCharPref(getPrefReaderForType(feedType), "client");
+ break;
+ case "liveBookmarksMenuItem":
+ defaultHandler = "bookmarks";
+ prefs.setCharPref(getPrefReaderForType(feedType), "bookmarks");
+ break;
+ }
+ var feedService = Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+
+ // Pull the title and subtitle out of the document
+ var feedTitle = this._document.getElementById(TITLE_ID).textContent;
+ var feedSubtitle = this._document.getElementById(SUBTITLE_ID).textContent;
+ feedService.addToClientReader(this._window.location.href, feedTitle, feedSubtitle, feedType);
+ }
+
+ // If "Always use..." is checked, we should set PREF_*SELECTED_ACTION
+ // to either "reader" (If a web reader or if an application is selected),
+ // or to "bookmarks" (if the live bookmarks option is selected).
+ // Otherwise, we should set it to "ask"
+ if (useAsDefault) {
+ prefs.setCharPref(getPrefActionForType(feedType), defaultHandler);
+ } else {
+ prefs.setCharPref(getPrefActionForType(feedType), "ask");
+ }
+ }.bind(this);
+
+ // Show the file picker before subscribing if the
+ // choose application menuitem was chosen using the keyboard
+ if (selectedItem.getAttribute("anonid") == "chooseApplicationMenuItem") {
+ this._chooseClientApp(function(aResult) {
+ if (aResult) {
+ selectedItem =
+ this._getSelectedItemFromMenulist(this._handlersMenuList);
+ subscribeCallback();
+ }
+ }.bind(this));
+ } else {
+ subscribeCallback();
+ }
+ },
+
+ // nsIObserver
+ observe: function FW_observe(subject, topic, data) {
+ if (!this._window) {
+ // this._window is null unless this.init was called with a trusted
+ // window object.
+ return;
+ }
+
+ var feedType = this._getFeedType();
+
+ if (topic == "nsPref:changed") {
+ switch (data) {
+ case PREF_SELECTED_READER:
+ case PREF_SELECTED_WEB:
+ case PREF_SELECTED_APP:
+ case PREF_VIDEO_SELECTED_READER:
+ case PREF_VIDEO_SELECTED_WEB:
+ case PREF_VIDEO_SELECTED_APP:
+ case PREF_AUDIO_SELECTED_READER:
+ case PREF_AUDIO_SELECTED_WEB:
+ case PREF_AUDIO_SELECTED_APP:
+ this._setSelectedHandler(feedType);
+ break;
+ case PREF_SELECTED_ACTION:
+ case PREF_VIDEO_SELECTED_ACTION:
+ case PREF_AUDIO_SELECTED_ACTION:
+ this._setAlwaysUseCheckedState(feedType);
+ }
+ }
+ },
+
+ /**
+ * Sets the icon for the given web-reader item in the readers menu.
+ * The icon is fetched and stored through the favicon service.
+ *
+ * @param aReaderUrl
+ * the reader url.
+ * @param aMenuItem
+ * the reader item in the readers menulist.
+ *
+ * @note For privacy reasons we cannot set the image attribute directly
+ * to the icon url. See Bug 358878 for details.
+ */
+ _setFaviconForWebReader:
+ function FW__setFaviconForWebReader(aReaderUrl, aMenuItem) {
+ var readerURI = makeURI(aReaderUrl);
+ if (!/^https?$/.test(readerURI.scheme)) {
+ // Don't try to get a favicon for non http(s) URIs.
+ return;
+ }
+ var faviconURI = makeURI(readerURI.prePath + "/favicon.ico");
+ var self = this;
+ var usePrivateBrowsing = this._window.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIWebNavigation)
+ .QueryInterface(Ci.nsIDocShell)
+ .QueryInterface(Ci.nsILoadContext)
+ .usePrivateBrowsing;
+ var nullPrincipal = Cc["@mozilla.org/nullprincipal;1"]
+ .createInstance(Ci.nsIPrincipal);
+ this._faviconService.setAndFetchFaviconForPage(readerURI, faviconURI, false,
+ usePrivateBrowsing ? this._faviconService.FAVICON_LOAD_PRIVATE
+ : this._faviconService.FAVICON_LOAD_NON_PRIVATE,
+ function (aURI, aDataLen, aData, aMimeType) {
+ if (aDataLen > 0) {
+ var dataURL = "data:" + aMimeType + ";base64," +
+ btoa(String.fromCharCode.apply(null, aData));
+ self._contentSandbox.menuItem = aMenuItem;
+ self._contentSandbox.dataURL = dataURL;
+ var codeStr = "menuItem.setAttribute('image', dataURL);";
+ Cu.evalInSandbox(codeStr, self._contentSandbox);
+ self._contentSandbox.menuItem = null;
+ self._contentSandbox.dataURL = null;
+ }
+ }, nullPrincipal);
+ },
+
+ classID: FEEDWRITER_CID,
+ QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMEventListener, Ci.nsIObserver,
+ Ci.nsINavHistoryObserver,
+ Ci.nsIDOMGlobalPropertyInitializer])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FeedWriter]);
diff --git a/components/feeds/WebContentConverter.js b/components/feeds/WebContentConverter.js
new file mode 100644
index 0000000..42e2ede
--- /dev/null
+++ b/components/feeds/WebContentConverter.js
@@ -0,0 +1,927 @@
+/* -*- 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/. */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+function LOG(str) {
+ dump("*** " + str + "\n");
+}
+
+const WCCR_CONTRACTID = "@mozilla.org/embeddor.implemented/web-content-handler-registrar;1";
+const WCCR_CLASSID = Components.ID("{792a7e82-06a0-437c-af63-b2d12e808acc}");
+
+const WCC_CLASSID = Components.ID("{db7ebf28-cc40-415f-8a51-1b111851df1e}");
+const WCC_CLASSNAME = "Web Service Handler";
+
+const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
+const TYPE_ANY = "*/*";
+const TYPE_BLACKLIST = [
+ "application/x-www-form-urlencoded",
+ "application/xhtml+xml",
+ "application/xml",
+ "application/mathml+xml",
+ "application/xslt+xml",
+ "application/x-xpinstall",
+ "image/gif",
+ "image/jpg",
+ "image/jpeg",
+ "image/png",
+ "image/x-png",
+ "image/webp",
+#ifdef MOZ_JXR
+ "image/jxr",
+ "image/vnd.ms-photo",
+#endif
+ "image/svg+xml",
+ "image/bmp",
+ "image/x-ms-bmp",
+ "image/icon",
+ "image/x-icon",
+ "image/vnd.microsoft.icon",
+ "multipart/x-mixed-replace",
+ "multipart/form-data",
+ "text/cache-manifest",
+ "text/css",
+ "text/xsl",
+ "text/html",
+ "text/ping",
+ "text/plain",
+ "text/xml",
+ "text/javascript", // To prevent malicious intent blocking scripting.
+ "text/ecmascript"];
+
+const PREF_CONTENTHANDLERS_AUTO = "browser.contentHandlers.auto.";
+const PREF_CONTENTHANDLERS_BRANCH = "browser.contentHandlers.types.";
+const PREF_SELECTED_WEB = "browser.feeds.handlers.webservice";
+const PREF_SELECTED_ACTION = "browser.feeds.handler";
+const PREF_SELECTED_READER = "browser.feeds.handler.default";
+const PREF_HANDLER_EXTERNAL_PREFIX = "network.protocol-handler.external";
+const PREF_ALLOW_DIFFERENT_HOST = "gecko.handlerService.allowRegisterFromDifferentHost";
+
+const STRING_BUNDLE_URI = "chrome://browser/locale/feeds/subscribe.properties";
+
+const NS_ERROR_MODULE_DOM = 2152923136;
+const NS_ERROR_DOM_SYNTAX_ERR = NS_ERROR_MODULE_DOM + 12;
+
+function WebContentConverter() {
+}
+WebContentConverter.prototype = {
+ convert: function WCC_convert() { },
+ asyncConvertData: function WCC_asyncConvertData() { },
+ onDataAvailable: function WCC_onDataAvailable() { },
+ onStopRequest: function WCC_onStopRequest() { },
+
+ onStartRequest: function WCC_onStartRequest(request, context) {
+ var wccr =
+ Cc[WCCR_CONTRACTID].
+ getService(Ci.nsIWebContentConverterService);
+ wccr.loadPreferredHandler(request);
+ },
+
+ QueryInterface: function WCC_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIStreamConverter) ||
+ iid.equals(Ci.nsIStreamListener) ||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NO_INTERFACE;
+ }
+};
+
+var WebContentConverterFactory = {
+ createInstance: function WCCF_createInstance(outer, iid) {
+ if (outer != null)
+ throw Cr.NS_ERROR_NO_AGGREGATION;
+ return new WebContentConverter().QueryInterface(iid);
+ },
+
+ QueryInterface: function WCC_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIFactory) ||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NO_INTERFACE;
+ }
+};
+
+function ServiceInfo(contentType, uri, name) {
+ this._contentType = contentType;
+ this._uri = uri;
+ this._name = name;
+}
+ServiceInfo.prototype = {
+ /**
+ * See nsIHandlerApp
+ */
+ get name() {
+ return this._name;
+ },
+
+ /**
+ * See nsIHandlerApp
+ */
+ equals: function SI_equals(aHandlerApp) {
+ if (!aHandlerApp)
+ throw Cr.NS_ERROR_NULL_POINTER;
+
+ if (aHandlerApp instanceof Ci.nsIWebContentHandlerInfo &&
+ aHandlerApp.contentType == this.contentType &&
+ aHandlerApp.uri == this.uri)
+ return true;
+
+ return false;
+ },
+
+ /**
+ * See nsIWebContentHandlerInfo
+ */
+ get contentType() {
+ return this._contentType;
+ },
+
+ /**
+ * See nsIWebContentHandlerInfo
+ */
+ get uri() {
+ return this._uri;
+ },
+
+ /**
+ * See nsIWebContentHandlerInfo
+ */
+ getHandlerURI: function SI_getHandlerURI(uri) {
+ return this._uri.replace(/%s/gi, encodeURIComponent(uri));
+ },
+
+ QueryInterface: function SI_QueryInterface(iid) {
+ if (iid.equals(Ci.nsIWebContentHandlerInfo) ||
+ iid.equals(Ci.nsISupports))
+ return this;
+ throw Cr.NS_ERROR_NO_INTERFACE;
+ }
+};
+
+function WebContentConverterRegistrar() {
+ this._contentTypes = { };
+ this._autoHandleContentTypes = { };
+}
+
+WebContentConverterRegistrar.prototype = {
+ get stringBundle() {
+ var sb = Cc["@mozilla.org/intl/stringbundle;1"].
+ getService(Ci.nsIStringBundleService).
+ createBundle(STRING_BUNDLE_URI);
+ delete WebContentConverterRegistrar.prototype.stringBundle;
+ return WebContentConverterRegistrar.prototype.stringBundle = sb;
+ },
+
+ _getFormattedString: function WCCR__getFormattedString(key, params) {
+ return this.stringBundle.formatStringFromName(key, params, params.length);
+ },
+
+ _getString: function WCCR_getString(key) {
+ return this.stringBundle.GetStringFromName(key);
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ getAutoHandler:
+ function WCCR_getAutoHandler(contentType) {
+ contentType = this._resolveContentType(contentType);
+ if (contentType in this._autoHandleContentTypes)
+ return this._autoHandleContentTypes[contentType];
+ return null;
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ setAutoHandler:
+ function WCCR_setAutoHandler(contentType, handler) {
+ if (handler && !this._typeIsRegistered(contentType, handler.uri))
+ throw Cr.NS_ERROR_NOT_AVAILABLE;
+
+ contentType = this._resolveContentType(contentType);
+ this._setAutoHandler(contentType, handler);
+
+ var ps =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefService);
+ var autoBranch = ps.getBranch(PREF_CONTENTHANDLERS_AUTO);
+ if (handler)
+ autoBranch.setCharPref(contentType, handler.uri);
+ else if (autoBranch.prefHasUserValue(contentType))
+ autoBranch.clearUserPref(contentType);
+
+ ps.savePrefFile(null);
+ },
+
+ /**
+ * Update the internal data structure (not persistent)
+ */
+ _setAutoHandler:
+ function WCCR__setAutoHandler(contentType, handler) {
+ if (handler)
+ this._autoHandleContentTypes[contentType] = handler;
+ else if (contentType in this._autoHandleContentTypes)
+ delete this._autoHandleContentTypes[contentType];
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ getWebContentHandlerByURI:
+ function WCCR_getWebContentHandlerByURI(contentType, uri) {
+ var handlers = this.getContentHandlers(contentType, { });
+ for (var i = 0; i < handlers.length; ++i) {
+ if (handlers[i].uri == uri)
+ return handlers[i];
+ }
+ return null;
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ loadPreferredHandler:
+ function WCCR_loadPreferredHandler(request) {
+ var channel = request.QueryInterface(Ci.nsIChannel);
+ var contentType = this._resolveContentType(channel.contentType);
+ var handler = this.getAutoHandler(contentType);
+ if (handler) {
+ request.cancel(Cr.NS_ERROR_FAILURE);
+
+ var webNavigation =
+ channel.notificationCallbacks.getInterface(Ci.nsIWebNavigation);
+ webNavigation.loadURI(handler.getHandlerURI(channel.URI.spec),
+ Ci.nsIWebNavigation.LOAD_FLAGS_NONE,
+ null, null, null);
+ }
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ removeProtocolHandler:
+ function WCCR_removeProtocolHandler(aProtocol, aURITemplate) {
+ var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
+ getService(Ci.nsIExternalProtocolService);
+ var handlerInfo = eps.getProtocolHandlerInfo(aProtocol);
+ var handlers = handlerInfo.possibleApplicationHandlers;
+ for (let i = 0; i < handlers.length; i++) {
+ try { // We only want to test web handlers
+ let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp);
+ if (handler.uriTemplate == aURITemplate) {
+ handlers.removeElementAt(i);
+ var hs = Cc["@mozilla.org/uriloader/handler-service;1"].
+ getService(Ci.nsIHandlerService);
+ hs.store(handlerInfo);
+ return;
+ }
+ } catch (e) { /* it wasn't a web handler */ }
+ }
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ removeContentHandler:
+ function WCCR_removeContentHandler(contentType, uri) {
+ function notURI(serviceInfo) {
+ return serviceInfo.uri != uri;
+ }
+
+ if (contentType in this._contentTypes) {
+ this._contentTypes[contentType] =
+ this._contentTypes[contentType].filter(notURI);
+ }
+ },
+
+ /**
+ *
+ */
+ _mappings: {
+ "application/rss+xml": TYPE_MAYBE_FEED,
+ "application/atom+xml": TYPE_MAYBE_FEED,
+ },
+
+ /**
+ * These are types for which there is a separate content converter aside
+ * from our built in generic one. We should not automatically register
+ * a factory for creating a converter for these types.
+ */
+ _blockedTypes: {
+ "application/vnd.mozilla.maybe.feed": true,
+ },
+
+ /**
+ * Determines the "internal" content type based on the _mappings.
+ * @param contentType
+ * @returns The resolved contentType value.
+ */
+ _resolveContentType:
+ function WCCR__resolveContentType(contentType) {
+ if (contentType in this._mappings)
+ return this._mappings[contentType];
+ return contentType;
+ },
+
+ _makeURI: function(aURL, aOriginCharset, aBaseURI) {
+ var ioService = Components.classes["@mozilla.org/network/io-service;1"]
+ .getService(Components.interfaces.nsIIOService);
+ return ioService.newURI(aURL, aOriginCharset, aBaseURI);
+ },
+
+ _checkAndGetURI:
+ function WCCR_checkAndGetURI(aURIString, aContentWindow)
+ {
+ try {
+ let baseURI = aContentWindow.document.baseURIObject;
+ var uri = this._makeURI(aURIString, null, baseURI);
+ } catch (ex) {
+ // not supposed to throw according to spec
+ return;
+ }
+
+ // For security reasons we reject non-http(s) urls (see bug 354316),
+ // we may need to revise this once we support more content types
+ // XXX this should be a "security exception" according to spec, but that
+ // isn't defined yet.
+ if (uri.scheme != "http" && uri.scheme != "https")
+ throw("Permission denied to add " + uri.spec + " as a content or protocol handler");
+
+ // We also reject handlers registered from a different host (see bug 402287)
+ // The pref allows us to test the feature
+ var pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
+ if (!pb.getBoolPref(PREF_ALLOW_DIFFERENT_HOST) &&
+ (!["http:", "https:"].includes(aContentWindow.location.protocol) ||
+ aContentWindow.location.hostname != uri.host)) {
+ throw("Permission denied to add " + uri.spec + " as a content or protocol handler");
+ }
+
+ // If the uri doesn't contain '%s', it won't be a good handler
+ if (uri.spec.indexOf("%s") < 0)
+ throw NS_ERROR_DOM_SYNTAX_ERR;
+
+ return uri;
+ },
+
+ /**
+ * Determines if a web handler is already registered.
+ *
+ * @param aProtocol
+ * The scheme of the web handler we are checking for.
+ * @param aURITemplate
+ * The URI template that the handler uses to handle the protocol.
+ * @return true if it is already registered, false otherwise.
+ */
+ _protocolHandlerRegistered:
+ function WCCR_protocolHandlerRegistered(aProtocol, aURITemplate) {
+ var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
+ getService(Ci.nsIExternalProtocolService);
+ var handlerInfo = eps.getProtocolHandlerInfo(aProtocol);
+ var handlers = handlerInfo.possibleApplicationHandlers;
+ for (let i = 0; i < handlers.length; i++) {
+ try { // We only want to test web handlers
+ let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp);
+ if (handler.uriTemplate == aURITemplate)
+ return true;
+ } catch (e) { /* it wasn't a web handler */ }
+ }
+ return false;
+ },
+
+ /**
+ * See nsIWebContentHandlerRegistrar
+ */
+ registerProtocolHandler:
+ function WCCR_registerProtocolHandler(aProtocol, aURIString, aTitle, aContentWindow) {
+ LOG("registerProtocolHandler(" + aProtocol + "," + aURIString + "," + aTitle + ")");
+
+ var uri = this._checkAndGetURI(aURIString, aContentWindow);
+
+ // If the protocol handler is already registered, just return early.
+ if (this._protocolHandlerRegistered(aProtocol, uri.spec)) {
+ return;
+ }
+
+ var browserWindow = this._getBrowserWindowForContentWindow(aContentWindow);
+ if (PrivateBrowsingUtils.isWindowPrivate(browserWindow)) {
+ // Inside the private browsing mode, we don't want to alert the user to save
+ // a protocol handler. We log it to the error console so that web developers
+ // would have some way to tell what's going wrong.
+ Cc["@mozilla.org/consoleservice;1"].
+ getService(Ci.nsIConsoleService).
+ logStringMessage("Web page denied access to register a protocol handler inside private browsing mode");
+ return;
+ }
+
+ // First, check to make sure this isn't already handled internally (we don't
+ // want to let them take over, say "chrome").
+ var ios = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ var handler = ios.getProtocolHandler(aProtocol);
+ if (!(handler instanceof Ci.nsIExternalProtocolHandler)) {
+ // This is handled internally, so we don't want them to register
+ // XXX this should be a "security exception" according to spec, but that
+ // isn't defined yet.
+ throw("Permission denied to add " + aURIString + "as a protocol handler");
+ }
+
+ // check if it is in the black list
+ var pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
+ var allowed = pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "." + aProtocol,
+ pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "-default"));
+ if (!allowed) {
+ // XXX this should be a "security exception" according to spec
+ throw("Not allowed to register a protocol handler for " + aProtocol);
+ }
+
+ // Now Ask the user and provide the proper callback
+ var message = this._getFormattedString("addProtocolHandler",
+ [aTitle, uri.host, aProtocol]);
+
+ var notificationIcon = uri.prePath + "/favicon.ico";
+ var notificationValue = "Protocol Registration: " + aProtocol;
+ var addButton = {
+ label: this._getString("addProtocolHandlerAddButton"),
+ accessKey: this._getString("addHandlerAddButtonAccesskey"),
+ protocolInfo: { protocol: aProtocol, uri: uri.spec, name: aTitle },
+
+ callback:
+ function WCCR_addProtocolHandlerButtonCallback(aNotification, aButtonInfo) {
+ var protocol = aButtonInfo.protocolInfo.protocol;
+ var uri = aButtonInfo.protocolInfo.uri;
+ var name = aButtonInfo.protocolInfo.name;
+
+ var handler = Cc["@mozilla.org/uriloader/web-handler-app;1"].
+ createInstance(Ci.nsIWebHandlerApp);
+ handler.name = name;
+ handler.uriTemplate = uri;
+
+ var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
+ getService(Ci.nsIExternalProtocolService);
+ var handlerInfo = eps.getProtocolHandlerInfo(protocol);
+ handlerInfo.possibleApplicationHandlers.appendElement(handler, false);
+
+ // Since the user has agreed to add a new handler, chances are good
+ // that the next time they see a handler of this type, they're going
+ // to want to use it. Reset the handlerInfo to ask before the next
+ // use.
+ handlerInfo.alwaysAskBeforeHandling = true;
+
+ var hs = Cc["@mozilla.org/uriloader/handler-service;1"].
+ getService(Ci.nsIHandlerService);
+ hs.store(handlerInfo);
+ }
+ };
+ var browserElement = this._getBrowserForContentWindow(browserWindow, aContentWindow);
+ var notificationBox = browserWindow.gBrowser.getNotificationBox(browserElement);
+ notificationBox.appendNotification(message,
+ notificationValue,
+ notificationIcon,
+ notificationBox.PRIORITY_INFO_LOW,
+ [addButton]);
+ },
+
+ /**
+ * See nsIWebContentHandlerRegistrar
+ * If a DOM window is provided, then the request came from content, so we
+ * prompt the user to confirm the registration.
+ */
+ registerContentHandler:
+ function WCCR_registerContentHandler(aContentType, aURIString, aTitle, aContentWindow) {
+ LOG("registerContentHandler(" + aContentType + "," + aURIString + "," + aTitle + ")");
+
+ // Check against the type blacklist.
+ // XXX this should be a "security exception" according to spec, but that
+ // isn't defined yet.
+ var contentType = this._resolveContentType(aContentType);
+ for (let blacklistType of TYPE_BLACKLIST) {
+ if (contentType == blacklistType) {
+ console.error("Unable to register content handler for prohibited MIME type %s.", contentType);
+ return;
+ }
+ }
+
+ if (aContentWindow) {
+ var uri = this._checkAndGetURI(aURIString, aContentWindow);
+
+ var browserWindow = this._getBrowserWindowForContentWindow(aContentWindow);
+ var browserElement = this._getBrowserForContentWindow(browserWindow, aContentWindow);
+ var notificationBox = browserWindow.gBrowser.getNotificationBox(browserElement);
+ this._appendFeedReaderNotification(uri, aTitle, notificationBox);
+ }
+ else
+ this._registerContentHandler(contentType, aURIString, aTitle);
+ },
+
+ /**
+ * Returns the browser chrome window in which the content window is in
+ */
+ _getBrowserWindowForContentWindow:
+ function WCCR__getBrowserWindowForContentWindow(aContentWindow) {
+ return aContentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIWebNavigation)
+ .QueryInterface(Ci.nsIDocShellTreeItem)
+ .rootTreeItem
+ .QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIDOMWindow)
+ .wrappedJSObject;
+ },
+
+ /**
+ * Returns the <xul:browser> element associated with the given content
+ * window.
+ *
+ * @param aBrowserWindow
+ * The browser window in which the content window is in.
+ * @param aContentWindow
+ * The content window. It's possible to pass a child content window
+ * (i.e. the content window of a frame/iframe).
+ */
+ _getBrowserForContentWindow:
+ function WCCR__getBrowserForContentWindow(aBrowserWindow, aContentWindow) {
+ // This depends on pseudo APIs of browser.js and tabbrowser.xml
+ aContentWindow = aContentWindow.top;
+ var browsers = aBrowserWindow.gBrowser.browsers;
+ for (var i = 0; i < browsers.length; ++i) {
+ if (browsers[i].contentWindow == aContentWindow)
+ return browsers[i];
+ }
+ },
+
+ /**
+ * Appends a notifcation for the given feed reader details.
+ *
+ * The notification could be either a pseudo-dialog which lets
+ * the user to add the feed reader:
+ * [ [icon] Add %feed-reader-name% (%feed-reader-host%) as a Feed Reader? (Add) [x] ]
+ *
+ * or a simple message for the case where the feed reader is already registered:
+ * [ [icon] %feed-reader-name% is already registered as a Feed Reader [x] ]
+ *
+ * A new notification isn't appended if the given notificationbox has a
+ * notification for the same feed reader.
+ *
+ * @param aURI
+ * The url of the feed reader as a nsIURI object
+ * @param aName
+ * The feed reader name as it was passed to registerContentHandler
+ * @param aNotificationBox
+ * The notification box to which a notification might be appended
+ * @return true if a notification has been appended, false otherwise.
+ */
+ _appendFeedReaderNotification:
+ function WCCR__appendFeedReaderNotification(aURI, aName, aNotificationBox) {
+ var uriSpec = aURI.spec;
+ var notificationValue = "feed reader notification: " + uriSpec;
+ var notificationIcon = aURI.prePath + "/favicon.ico";
+
+ // Don't append a new notification if the notificationbox
+ // has a notification for the given feed reader already
+ if (aNotificationBox.getNotificationWithValue(notificationValue))
+ return false;
+
+ var buttons, message;
+ if (this.getWebContentHandlerByURI(TYPE_MAYBE_FEED, uriSpec))
+ message = this._getFormattedString("handlerRegistered", [aName]);
+ else {
+ message = this._getFormattedString("addHandler", [aName, aURI.host]);
+ var self = this;
+ var addButton = {
+ _outer: self,
+ label: self._getString("addHandlerAddButton"),
+ accessKey: self._getString("addHandlerAddButtonAccesskey"),
+ feedReaderInfo: { uri: uriSpec, name: aName },
+
+ /* static */
+ callback:
+ function WCCR__addFeedReaderButtonCallback(aNotification, aButtonInfo) {
+ var uri = aButtonInfo.feedReaderInfo.uri;
+ var name = aButtonInfo.feedReaderInfo.name;
+ var outer = aButtonInfo._outer;
+
+ // The reader could have been added from another window mean while
+ if (!outer.getWebContentHandlerByURI(TYPE_MAYBE_FEED, uri))
+ outer._registerContentHandler(TYPE_MAYBE_FEED, uri, name);
+
+ // avoid reference cycles
+ aButtonInfo._outer = null;
+
+ return false;
+ }
+ };
+ buttons = [addButton];
+ }
+
+ aNotificationBox.appendNotification(message,
+ notificationValue,
+ notificationIcon,
+ aNotificationBox.PRIORITY_INFO_LOW,
+ buttons);
+ return true;
+ },
+
+ /**
+ * Save Web Content Handler metadata to persistent preferences.
+ * @param contentType
+ * The content Type being handled
+ * @param uri
+ * The uri of the web service
+ * @param title
+ * The human readable name of the web service
+ *
+ * This data is stored under:
+ *
+ * browser.contentHandlers.type0 = content/type
+ * browser.contentHandlers.uri0 = http://www.foo.com/q=%s
+ * browser.contentHandlers.title0 = Foo 2.0alphr
+ */
+ _saveContentHandlerToPrefs:
+ function WCCR__saveContentHandlerToPrefs(contentType, uri, title) {
+ var ps =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefService);
+ var i = 0;
+ var typeBranch = null;
+ while (true) {
+ typeBranch =
+ ps.getBranch(PREF_CONTENTHANDLERS_BRANCH + i + ".");
+ try {
+ typeBranch.getCharPref("type");
+ ++i;
+ }
+ catch (e) {
+ // No more handlers
+ break;
+ }
+ }
+ if (typeBranch) {
+ typeBranch.setCharPref("type", contentType);
+ var pls =
+ Cc["@mozilla.org/pref-localizedstring;1"].
+ createInstance(Ci.nsIPrefLocalizedString);
+ pls.data = uri;
+ typeBranch.setComplexValue("uri", Ci.nsIPrefLocalizedString, pls);
+ pls.data = title;
+ typeBranch.setComplexValue("title", Ci.nsIPrefLocalizedString, pls);
+
+ ps.savePrefFile(null);
+ }
+ },
+
+ /**
+ * Determines if there is a type with a particular uri registered for the
+ * specified content type already.
+ * @param contentType
+ * The content type that the uri handles
+ * @param uri
+ * The uri of the
+ */
+ _typeIsRegistered: function WCCR__typeIsRegistered(contentType, uri) {
+ if (!(contentType in this._contentTypes))
+ return false;
+
+ var services = this._contentTypes[contentType];
+ for (var i = 0; i < services.length; ++i) {
+ // This uri has already been registered
+ if (services[i].uri == uri)
+ return true;
+ }
+ return false;
+ },
+
+ /**
+ * Gets a stream converter contract id for the specified content type.
+ * @param contentType
+ * The source content type for the conversion.
+ * @returns A contract id to construct a converter to convert between the
+ * contentType and *\/*.
+ */
+ _getConverterContractID: function WCCR__getConverterContractID(contentType) {
+ const template = "@mozilla.org/streamconv;1?from=%s&to=*/*";
+ return template.replace(/%s/, contentType);
+ },
+
+ /**
+ * Register a web service handler for a content type.
+ *
+ * @param contentType
+ * the content type being handled
+ * @param uri
+ * the URI of the web service
+ * @param title
+ * the human readable name of the web service
+ */
+ _registerContentHandler:
+ function WCCR__registerContentHandler(contentType, uri, title) {
+ this._updateContentTypeHandlerMap(contentType, uri, title);
+ this._saveContentHandlerToPrefs(contentType, uri, title);
+
+ if (contentType == TYPE_MAYBE_FEED) {
+ // Make the new handler the last-selected reader in the preview page
+ // and make sure the preview page is shown the next time a feed is visited
+ var pb = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefService).getBranch(null);
+ pb.setCharPref(PREF_SELECTED_READER, "web");
+
+ var supportsString =
+ Cc["@mozilla.org/supports-string;1"].
+ createInstance(Ci.nsISupportsString);
+ supportsString.data = uri;
+ pb.setComplexValue(PREF_SELECTED_WEB, Ci.nsISupportsString,
+ supportsString);
+ pb.setCharPref(PREF_SELECTED_ACTION, "ask");
+ this._setAutoHandler(TYPE_MAYBE_FEED, null);
+ }
+ },
+
+ /**
+ * Update the content type -> handler map. This mapping is not persisted, use
+ * registerContentHandler or _saveContentHandlerToPrefs for that purpose.
+ * @param contentType
+ * The content Type being handled
+ * @param uri
+ * The uri of the web service
+ * @param title
+ * The human readable name of the web service
+ */
+ _updateContentTypeHandlerMap:
+ function WCCR__updateContentTypeHandlerMap(contentType, uri, title) {
+ if (!(contentType in this._contentTypes))
+ this._contentTypes[contentType] = [];
+
+ // Avoid adding duplicates
+ if (this._typeIsRegistered(contentType, uri))
+ return;
+
+ this._contentTypes[contentType].push(new ServiceInfo(contentType, uri, title));
+
+ if (!(contentType in this._blockedTypes)) {
+ var converterContractID = this._getConverterContractID(contentType);
+ var cr = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+ cr.registerFactory(WCC_CLASSID, WCC_CLASSNAME, converterContractID,
+ WebContentConverterFactory);
+ }
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ getContentHandlers:
+ function WCCR_getContentHandlers(contentType, countRef) {
+ countRef.value = 0;
+ if (!(contentType in this._contentTypes))
+ return [];
+
+ var handlers = this._contentTypes[contentType];
+ countRef.value = handlers.length;
+ return handlers;
+ },
+
+ /**
+ * See nsIWebContentConverterService
+ */
+ resetHandlersForType:
+ function WCCR_resetHandlersForType(contentType) {
+ // currently unused within the tree, so only useful for extensions; previous
+ // impl. was buggy (and even infinite-looped!), so I argue that this is a
+ // definite improvement
+ throw Cr.NS_ERROR_NOT_IMPLEMENTED;
+ },
+
+ /**
+ * Registers a handler from the settings on a preferences branch.
+ *
+ * @param branch
+ * an nsIPrefBranch containing "type", "uri", and "title" preferences
+ * corresponding to the content handler to be registered
+ */
+ _registerContentHandlerWithBranch: function(branch) {
+ /**
+ * Since we support up to six predefined readers, we need to handle gaps
+ * better, since the first branch with user-added values will be .6
+ *
+ * How we deal with that is to check to see if there's no prefs in the
+ * branch and stop cycling once that's true. This doesn't fix the case
+ * where a user manually removes a reader, but that's not supported yet!
+ */
+ var vals = branch.getChildList("");
+ if (vals.length == 0)
+ return;
+
+ try {
+ var type = branch.getCharPref("type");
+ var uri = branch.getComplexValue("uri", Ci.nsIPrefLocalizedString).data;
+ var title = branch.getComplexValue("title",
+ Ci.nsIPrefLocalizedString).data;
+ this._updateContentTypeHandlerMap(type, uri, title);
+ }
+ catch(ex) {
+ // do nothing, the next branch might have values
+ }
+ },
+
+ /**
+ * Load the auto handler, content handler and protocol tables from
+ * preferences.
+ */
+ _init: function WCCR__init() {
+ var ps =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefService);
+
+ var kids = ps.getBranch(PREF_CONTENTHANDLERS_BRANCH)
+ .getChildList("");
+
+ // first get the numbers of the providers by getting all ###.uri prefs
+ var nums = [];
+ for (var i = 0; i < kids.length; i++) {
+ var match = /^(\d+)\.uri$/.exec(kids[i]);
+ if (!match)
+ continue;
+ else
+ nums.push(match[1]);
+ }
+
+ // sort them, to get them back in order
+ nums.sort(function(a, b) {return a - b;});
+
+ // now register them
+ for (var i = 0; i < nums.length; i++) {
+ var branch = ps.getBranch(PREF_CONTENTHANDLERS_BRANCH + nums[i] + ".");
+ this._registerContentHandlerWithBranch(branch);
+ }
+
+ // We need to do this _after_ registering all of the available handlers,
+ // so that getWebContentHandlerByURI can return successfully.
+ try {
+ var autoBranch = ps.getBranch(PREF_CONTENTHANDLERS_AUTO);
+ var childPrefs = autoBranch.getChildList("");
+ for (var i = 0; i < childPrefs.length; ++i) {
+ var type = childPrefs[i];
+ var uri = autoBranch.getCharPref(type);
+ if (uri) {
+ var handler = this.getWebContentHandlerByURI(type, uri);
+ this._setAutoHandler(type, handler);
+ }
+ }
+ }
+ catch (e) {
+ // No auto branch yet, that's fine
+ //LOG("WCCR.init: There is no auto branch, benign");
+ }
+ },
+
+ /**
+ * See nsIObserver
+ */
+ observe: function WCCR_observe(subject, topic, data) {
+ var os =
+ Cc["@mozilla.org/observer-service;1"].
+ getService(Ci.nsIObserverService);
+ switch (topic) {
+ case "app-startup":
+ os.addObserver(this, "browser-ui-startup-complete", false);
+ break;
+ case "browser-ui-startup-complete":
+ os.removeObserver(this, "browser-ui-startup-complete");
+ this._init();
+ break;
+ }
+ },
+
+ /**
+ * See nsIFactory
+ */
+ createInstance: function WCCR_createInstance(outer, iid) {
+ if (outer != null)
+ throw Cr.NS_ERROR_NO_AGGREGATION;
+ return this.QueryInterface(iid);
+ },
+
+ classID: WCCR_CLASSID,
+
+ /**
+ * See nsISupports
+ */
+ QueryInterface: XPCOMUtils.generateQI(
+ [Ci.nsIWebContentConverterService,
+ Ci.nsIWebContentHandlerRegistrar,
+ Ci.nsIObserver,
+ Ci.nsIFactory]),
+
+ _xpcom_categories: [{
+ category: "app-startup",
+ service: true
+ }]
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([WebContentConverterRegistrar]);
diff --git a/components/feeds/content/subscribe.css b/components/feeds/content/subscribe.css
new file mode 100644
index 0000000..bf2524d
--- /dev/null
+++ b/components/feeds/content/subscribe.css
@@ -0,0 +1,7 @@
+/* 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/. */
+
+#feedSubscribeLine {
+ -moz-binding: url(subscribe.xml#feedreaderUI);
+}
diff --git a/components/feeds/content/subscribe.js b/components/feeds/content/subscribe.js
new file mode 100644
index 0000000..ab2eac4
--- /dev/null
+++ b/components/feeds/content/subscribe.js
@@ -0,0 +1,23 @@
+/* -*- 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/. */
+
+var SubscribeHandler = {
+ /**
+ * The nsIFeedWriter object that produces the UI
+ */
+ _feedWriter: null,
+
+ init: function SH_init() {
+ this._feedWriter = new BrowserFeedWriter();
+ },
+
+ writeContent: function SH_writeContent() {
+ this._feedWriter.writeContent();
+ },
+
+ uninit: function SH_uninit() {
+ this._feedWriter.close();
+ }
+};
diff --git a/components/feeds/content/subscribe.xhtml b/components/feeds/content/subscribe.xhtml
new file mode 100644
index 0000000..8ad069f
--- /dev/null
+++ b/components/feeds/content/subscribe.xhtml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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/. -->
+
+
+<!DOCTYPE html [
+ <!ENTITY % htmlDTD
+ PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "DTD/xhtml1-strict.dtd">
+ %htmlDTD;
+ <!ENTITY % globalDTD
+ SYSTEM "chrome://global/locale/global.dtd">
+ %globalDTD;
+ <!ENTITY % feedDTD
+ SYSTEM "chrome://browser/locale/feeds/subscribe.dtd">
+ %feedDTD;
+]>
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+
+<html id="feedHandler"
+ xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <title>&feedPage.title;</title>
+ <link rel="stylesheet"
+ href="chrome://browser/skin/feeds/subscribe.css"
+ type="text/css"
+ media="all"/>
+ <link rel="stylesheet"
+ href="chrome://browser/content/feeds/subscribe.css"
+ type="text/css"
+ media="all"/>
+ <script type="application/javascript"
+ src="chrome://browser/content/feeds/subscribe.js"/>
+ </head>
+ <body onload="SubscribeHandler.writeContent();" onunload="SubscribeHandler.uninit();">
+ <div id="feedHeaderContainer">
+ <div id="feedHeader" dir="&locale.dir;">
+ <div id="feedIntroText">
+ <p id="feedSubscriptionInfo1" />
+ <p id="feedSubscriptionInfo2" />
+ </div>
+ <div id="feedSubscribeLine"></div>
+ </div>
+ </div>
+
+ <script type="application/javascript">
+ SubscribeHandler.init();
+ </script>
+
+ <div id="feedBody">
+ <div id="feedTitle">
+ <a id="feedTitleLink">
+ <img id="feedTitleImage"/>
+ </a>
+ <div id="feedTitleContainer">
+ <h1 id="feedTitleText"/>
+ <h2 id="feedSubtitleText"/>
+ </div>
+ </div>
+ <div id="feedContent"/>
+ </div>
+ </body>
+</html>
diff --git a/components/feeds/content/subscribe.xml b/components/feeds/content/subscribe.xml
new file mode 100644
index 0000000..949bcfd
--- /dev/null
+++ b/components/feeds/content/subscribe.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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/. -->
+
+<!DOCTYPE bindings [
+ <!ENTITY % feedDTD
+ SYSTEM "chrome://browser/locale/feeds/subscribe.dtd">
+ %feedDTD;
+]>
+<bindings id="feedBindings"
+ xmlns="http://www.mozilla.org/xbl"
+ xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+ <binding id="feedreaderUI" bindToUntrustedContent="true">
+ <content>
+ <xul:vbox>
+ <xul:hbox align="center">
+ <xul:description anonid="subscribeUsingDescription" class="subscribeUsingDescription"/>
+ <xul:menulist anonid="handlersMenuList" class="handlersMenuList" aria-labelledby="subscribeUsingDescription">
+ <xul:menupopup anonid="handlersMenuPopup" class="handlersMenuPopup">
+ <xul:menuitem anonid="liveBookmarksMenuItem" label="&feedLiveBookmarks;" class="menuitem-iconic liveBookmarksMenuItem" image="chrome://browser/skin/page-livemarks.png" selected="true"/>
+ <xul:menuseparator/>
+ </xul:menupopup>
+ </xul:menulist>
+ </xul:hbox>
+ <xul:hbox>
+ <xul:checkbox anonid="alwaysUse" class="alwaysUse" checked="false"/>
+ </xul:hbox>
+ <xul:hbox align="center">
+ <xul:spacer flex="1"/>
+ <xul:button label="&feedSubscribeNow;" anonid="subscribeButton" class="subscribeButton"/>
+ </xul:hbox>
+ </xul:vbox>
+ </content>
+ <resources>
+ <stylesheet src="chrome://browser/skin/feeds/subscribe-ui.css"/>
+ </resources>
+ </binding>
+</bindings>
+
diff --git a/components/feeds/jar.mn b/components/feeds/jar.mn
new file mode 100644
index 0000000..f8896f8
--- /dev/null
+++ b/components/feeds/jar.mn
@@ -0,0 +1,9 @@
+# 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/.
+
+browser.jar:
+ content/browser/feeds/subscribe.xhtml (content/subscribe.xhtml)
+ content/browser/feeds/subscribe.js (content/subscribe.js)
+ content/browser/feeds/subscribe.xml (content/subscribe.xml)
+ content/browser/feeds/subscribe.css (content/subscribe.css)
diff --git a/components/feeds/moz.build b/components/feeds/moz.build
new file mode 100644
index 0000000..736920a
--- /dev/null
+++ b/components/feeds/moz.build
@@ -0,0 +1,33 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+JAR_MANIFESTS += ['jar.mn']
+
+XPIDL_SOURCES += [
+ 'nsIFeedResultService.idl',
+ 'nsIWebContentConverterRegistrar.idl',
+]
+
+XPIDL_MODULE = 'browser-feeds'
+
+SOURCES += ['nsFeedSniffer.cpp']
+
+EXTRA_COMPONENTS += [
+ 'BrowserFeeds.manifest',
+ 'FeedConverter.js',
+]
+
+EXTRA_PP_COMPONENTS += [
+ 'FeedWriter.js',
+ 'WebContentConverter.js',
+]
+
+FINAL_LIBRARY = 'browsercomps'
+
+for var in ('MOZ_APP_NAME', 'MOZ_MACBUNDLE_NAME'):
+ DEFINES[var] = CONFIG[var]
+
+LOCAL_INCLUDES += ['../build']
diff --git a/components/feeds/nsFeedSniffer.cpp b/components/feeds/nsFeedSniffer.cpp
new file mode 100644
index 0000000..f314d3d
--- /dev/null
+++ b/components/feeds/nsFeedSniffer.cpp
@@ -0,0 +1,363 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+#include "nsFeedSniffer.h"
+
+
+#include "nsNetCID.h"
+#include "nsXPCOM.h"
+#include "nsCOMPtr.h"
+#include "nsStringStream.h"
+
+#include "nsBrowserCompsCID.h"
+
+#include "nsICategoryManager.h"
+#include "nsIServiceManager.h"
+#include "nsComponentManagerUtils.h"
+#include "nsServiceManagerUtils.h"
+
+#include "nsIStreamConverterService.h"
+#include "nsIStreamConverter.h"
+
+#include "nsIStreamListener.h"
+
+#include "nsIHttpChannel.h"
+#include "nsIMIMEHeaderParam.h"
+
+#include "nsMimeTypes.h"
+#include "nsIURI.h"
+#include <algorithm>
+
+#define TYPE_ATOM "application/atom+xml"
+#define TYPE_RSS "application/rss+xml"
+#define TYPE_MAYBE_FEED "application/vnd.mozilla.maybe.feed"
+
+#define NS_RDF "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+#define NS_RSS "http://purl.org/rss/1.0/"
+
+#define MAX_BYTES 512u
+
+NS_IMPL_ISUPPORTS(nsFeedSniffer,
+ nsIContentSniffer,
+ nsIStreamListener,
+ nsIRequestObserver)
+
+nsresult
+nsFeedSniffer::ConvertEncodedData(nsIRequest* request,
+ const uint8_t* data,
+ uint32_t length)
+{
+ nsresult rv = NS_OK;
+
+ mDecodedData = "";
+ nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(request));
+ if (!httpChannel)
+ return NS_ERROR_NO_INTERFACE;
+
+ nsAutoCString contentEncoding;
+ httpChannel->GetResponseHeader(NS_LITERAL_CSTRING("Content-Encoding"),
+ contentEncoding);
+ if (!contentEncoding.IsEmpty()) {
+ nsCOMPtr<nsIStreamConverterService> converterService(do_GetService(NS_STREAMCONVERTERSERVICE_CONTRACTID));
+ if (converterService) {
+ ToLowerCase(contentEncoding);
+
+ nsCOMPtr<nsIStreamListener> converter;
+ rv = converterService->AsyncConvertData(contentEncoding.get(),
+ "uncompressed", this, nullptr,
+ getter_AddRefs(converter));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ converter->OnStartRequest(request, nullptr);
+
+ nsCOMPtr<nsIStringInputStream> rawStream =
+ do_CreateInstance(NS_STRINGINPUTSTREAM_CONTRACTID);
+ if (!rawStream)
+ return NS_ERROR_FAILURE;
+
+ rv = rawStream->SetData((const char*)data, length);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = converter->OnDataAvailable(request, nullptr, rawStream, 0, length);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ converter->OnStopRequest(request, nullptr, NS_OK);
+ }
+ }
+ return rv;
+}
+
+template<int N>
+static bool
+StringBeginsWithLowercaseLiteral(nsAString& aString,
+ const char (&aSubstring)[N])
+{
+ return StringHead(aString, N).LowerCaseEqualsLiteral(aSubstring);
+}
+
+bool
+HasAttachmentDisposition(nsIHttpChannel* httpChannel)
+{
+ if (!httpChannel)
+ return false;
+
+ uint32_t disp;
+ nsresult rv = httpChannel->GetContentDisposition(&disp);
+
+ if (NS_SUCCEEDED(rv) && disp == nsIChannel::DISPOSITION_ATTACHMENT)
+ return true;
+
+ return false;
+}
+
+/**
+ * @return the first occurrence of a character within a string buffer,
+ * or nullptr if not found
+ */
+static const char*
+FindChar(char c, const char *begin, const char *end)
+{
+ for (; begin < end; ++begin) {
+ if (*begin == c)
+ return begin;
+ }
+ return nullptr;
+}
+
+/**
+ *
+ * Determine if a substring is the "documentElement" in the document.
+ *
+ * All of our sniffed substrings: <rss, <feed, <rdf:RDF must be the "document"
+ * element within the XML DOM, i.e. the root container element. Otherwise,
+ * it's possible that someone embedded one of these tags inside a document of
+ * another type, e.g. a HTML document, and we don't want to show the preview
+ * page if the document isn't actually a feed.
+ *
+ * @param start
+ * The beginning of the data being sniffed
+ * @param end
+ * The end of the data being sniffed, right before the substring that
+ * was found.
+ * @returns true if the found substring is the documentElement, false
+ * otherwise.
+ */
+static bool
+IsDocumentElement(const char *start, const char* end)
+{
+ // For every tag in the buffer, check to see if it's a PI, Doctype or
+ // comment, our desired substring or something invalid.
+ while ( (start = FindChar('<', start, end)) ) {
+ ++start;
+ if (start >= end)
+ return false;
+
+ // Check to see if the character following the '<' is either '?' or '!'
+ // (processing instruction or doctype or comment)... these are valid nodes
+ // to have in the prologue.
+ if (*start != '?' && *start != '!')
+ return false;
+
+ // Now advance the iterator until the '>' (We do this because we don't want
+ // to sniff indicator substrings that are embedded within other nodes, e.g.
+ // comments: <!-- <rdf:RDF .. > -->
+ start = FindChar('>', start, end);
+ if (!start)
+ return false;
+
+ ++start;
+ }
+ return true;
+}
+
+/**
+ * Determines whether or not a string exists as the root element in an XML data
+ * string buffer.
+ * @param dataString
+ * The data being sniffed
+ * @param substring
+ * The substring being tested for existence and root-ness.
+ * @returns true if the substring exists and is the documentElement, false
+ * otherwise.
+ */
+static bool
+ContainsTopLevelSubstring(nsACString& dataString, const char *substring)
+{
+ int32_t offset = dataString.Find(substring);
+ if (offset == -1)
+ return false;
+
+ const char *begin = dataString.BeginReading();
+
+ // Only do the validation when we find the substring.
+ return IsDocumentElement(begin, begin + offset);
+}
+
+NS_IMETHODIMP
+nsFeedSniffer::GetMIMETypeFromContent(nsIRequest* request,
+ const uint8_t* data,
+ uint32_t length,
+ nsACString& sniffedType)
+{
+ nsCOMPtr<nsIHttpChannel> channel(do_QueryInterface(request));
+ if (!channel)
+ return NS_ERROR_NO_INTERFACE;
+
+ // Check that this is a GET request, since you can't subscribe to a POST...
+ nsAutoCString method;
+ channel->GetRequestMethod(method);
+ if (!method.EqualsLiteral("GET")) {
+ sniffedType.Truncate();
+ return NS_OK;
+ }
+
+ // We need to find out if this is a load of a view-source document. In this
+ // case we do not want to override the content type, since the source display
+ // does not need to be converted from feed format to XUL. More importantly,
+ // we don't want to change the content type from something
+ // nsContentDLF::CreateInstance knows about (e.g. application/xml, text/html
+ // etc) to something that only the application fe knows about (maybe.feed)
+ // thus deactivating syntax highlighting.
+ nsCOMPtr<nsIURI> originalURI;
+ channel->GetOriginalURI(getter_AddRefs(originalURI));
+
+ nsAutoCString scheme;
+ originalURI->GetScheme(scheme);
+ if (scheme.EqualsLiteral("view-source")) {
+ sniffedType.Truncate();
+ return NS_OK;
+ }
+
+ // Check the Content-Type to see if it is set correctly. If it is set to
+ // something specific that we think is a reliable indication of a feed, don't
+ // bother sniffing since we assume the site maintainer knows what they're
+ // doing.
+ nsAutoCString contentType;
+ channel->GetContentType(contentType);
+ bool noSniff = contentType.EqualsLiteral(TYPE_RSS) ||
+ contentType.EqualsLiteral(TYPE_ATOM);
+
+ // Check to see if this was a feed request from the location bar or from
+ // the feed: protocol. This is also a reliable indication.
+ // The value of the header doesn't matter.
+ if (!noSniff) {
+ nsAutoCString sniffHeader;
+ nsresult foundHeader =
+ channel->GetRequestHeader(NS_LITERAL_CSTRING("X-Moz-Is-Feed"),
+ sniffHeader);
+ noSniff = NS_SUCCEEDED(foundHeader);
+ }
+
+ if (noSniff) {
+ // check for an attachment after we have a likely feed.
+ if(HasAttachmentDisposition(channel)) {
+ sniffedType.Truncate();
+ return NS_OK;
+ }
+
+ // set the feed header as a response header, since we have good metadata
+ // telling us that the feed is supposed to be RSS or Atom
+ channel->SetResponseHeader(NS_LITERAL_CSTRING("X-Moz-Is-Feed"),
+ NS_LITERAL_CSTRING("1"), false);
+ sniffedType.AssignLiteral(TYPE_MAYBE_FEED);
+ return NS_OK;
+ }
+
+ // Don't sniff arbitrary types. Limit sniffing to situations that
+ // we think can reasonably arise.
+ if (!contentType.EqualsLiteral(TEXT_HTML) &&
+ !contentType.EqualsLiteral(APPLICATION_OCTET_STREAM) &&
+ // Same criterion as XMLHttpRequest. Should we be checking for "+xml"
+ // and check for text/xml and application/xml by hand instead?
+ contentType.Find("xml") == -1) {
+ sniffedType.Truncate();
+ return NS_OK;
+ }
+
+ // Now we need to potentially decompress data served with
+ // Content-Encoding: gzip
+ nsresult rv = ConvertEncodedData(request, data, length);
+ if (NS_FAILED(rv))
+ return rv;
+
+ // We cap the number of bytes to scan at MAX_BYTES to prevent picking up
+ // false positives by accidentally reading document content, e.g. a "how to
+ // make a feed" page.
+ const char* testData;
+ if (mDecodedData.IsEmpty()) {
+ testData = (const char*)data;
+ length = std::min(length, MAX_BYTES);
+ } else {
+ testData = mDecodedData.get();
+ length = std::min(mDecodedData.Length(), MAX_BYTES);
+ }
+
+ // The strategy here is based on that described in:
+ // http://blogs.msdn.com/rssteam/articles/PublishersGuide.aspx
+ // for interoperarbility purposes.
+
+ // Thus begins the actual sniffing.
+ nsDependentCSubstring dataString((const char*)testData, length);
+
+ bool isFeed = false;
+
+ // RSS 0.91/0.92/2.0
+ isFeed = ContainsTopLevelSubstring(dataString, "<rss");
+
+ // Atom 1.0
+ if (!isFeed)
+ isFeed = ContainsTopLevelSubstring(dataString, "<feed");
+
+ // RSS 1.0
+ if (!isFeed) {
+ isFeed = ContainsTopLevelSubstring(dataString, "<rdf:RDF") &&
+ dataString.Find(NS_RDF) != -1 &&
+ dataString.Find(NS_RSS) != -1;
+ }
+
+ // If we sniffed a feed, coerce our internal type
+ if (isFeed && !HasAttachmentDisposition(channel))
+ sniffedType.AssignLiteral(TYPE_MAYBE_FEED);
+ else
+ sniffedType.Truncate();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsFeedSniffer::OnStartRequest(nsIRequest* request, nsISupports* context)
+{
+ return NS_OK;
+}
+
+nsresult
+nsFeedSniffer::AppendSegmentToString(nsIInputStream* inputStream,
+ void* closure,
+ const char* rawSegment,
+ uint32_t toOffset,
+ uint32_t count,
+ uint32_t* writeCount)
+{
+ nsCString* decodedData = static_cast<nsCString*>(closure);
+ decodedData->Append(rawSegment, count);
+ *writeCount = count;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsFeedSniffer::OnDataAvailable(nsIRequest* request, nsISupports* context,
+ nsIInputStream* stream, uint64_t offset,
+ uint32_t count)
+{
+ uint32_t read;
+ return stream->ReadSegments(AppendSegmentToString, &mDecodedData, count,
+ &read);
+}
+
+NS_IMETHODIMP
+nsFeedSniffer::OnStopRequest(nsIRequest* request, nsISupports* context,
+ nsresult status)
+{
+ return NS_OK;
+}
diff --git a/components/feeds/nsFeedSniffer.h b/components/feeds/nsFeedSniffer.h
new file mode 100644
index 0000000..a0eb986
--- /dev/null
+++ b/components/feeds/nsFeedSniffer.h
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+
+#include "nsIContentSniffer.h"
+#include "nsIStreamListener.h"
+#include "nsStringAPI.h"
+#include "mozilla/Attributes.h"
+
+class nsFeedSniffer final : public nsIContentSniffer,
+ nsIStreamListener
+{
+public:
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSICONTENTSNIFFER
+ NS_DECL_NSIREQUESTOBSERVER
+ NS_DECL_NSISTREAMLISTENER
+
+ static nsresult AppendSegmentToString(nsIInputStream* inputStream,
+ void* closure,
+ const char* rawSegment,
+ uint32_t toOffset,
+ uint32_t count,
+ uint32_t* writeCount);
+
+protected:
+ ~nsFeedSniffer() {}
+
+ nsresult ConvertEncodedData(nsIRequest* request, const uint8_t* data,
+ uint32_t length);
+
+private:
+ nsCString mDecodedData;
+};
+
diff --git a/components/feeds/nsIFeedResultService.idl b/components/feeds/nsIFeedResultService.idl
new file mode 100644
index 0000000..cb0f332
--- /dev/null
+++ b/components/feeds/nsIFeedResultService.idl
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+#include "nsISupports.idl"
+interface nsIURI;
+interface nsIRequest;
+interface nsIFeedResult;
+
+/**
+ * nsIFeedResultService provides a globally-accessible object for retrieving
+ * the results of feed processing.
+ */
+[scriptable, uuid(950a829e-c20e-4dc3-b447-f8b753ae54da)]
+interface nsIFeedResultService : nsISupports
+{
+ /**
+ * When set to true, forces the preview page to be displayed, regardless
+ * of the user's preferences.
+ */
+ attribute boolean forcePreviewPage;
+
+ /**
+ * Adds a URI to the user's specified external feed handler, or live
+ * bookmarks.
+ * @param uri
+ * The uri of the feed to add.
+ * @param title
+ * The title of the feed to add.
+ * @param subtitle
+ * The subtitle of the feed to add.
+ * @param feedType
+ * The nsIFeed type of the feed. See nsIFeed.idl
+ */
+ void addToClientReader(in AUTF8String uri,
+ in AString title,
+ in AString subtitle,
+ in unsigned long feedType);
+
+ /**
+ * Registers a Feed Result object with a globally accessible service
+ * so that it can be accessed by a singleton method outside the usual
+ * flow of control in document loading.
+ *
+ * @param feedResult
+ * An object implementing nsIFeedResult representing the feed.
+ */
+ void addFeedResult(in nsIFeedResult feedResult);
+
+ /**
+ * Gets a Feed Handler object registered using addFeedResult.
+ *
+ * @param uri
+ * The URI of the feed a handler is being requested for
+ */
+ nsIFeedResult getFeedResult(in nsIURI uri);
+
+ /**
+ * Unregisters a Feed Handler object registered using addFeedResult.
+ * @param uri
+ * The feed URI the handler was registered under. This must be
+ * the same *instance* the feed was registered under.
+ */
+ void removeFeedResult(in nsIURI uri);
+};
diff --git a/components/feeds/nsIWebContentConverterRegistrar.idl b/components/feeds/nsIWebContentConverterRegistrar.idl
new file mode 100644
index 0000000..08ce2f4
--- /dev/null
+++ b/components/feeds/nsIWebContentConverterRegistrar.idl
@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+#include "nsIMIMEInfo.idl"
+#include "nsIWebContentHandlerRegistrar.idl"
+
+interface nsIRequest;
+
+[scriptable, uuid(eb361098-5158-4b21-8f98-50b445f1f0b2)]
+interface nsIWebContentHandlerInfo : nsIHandlerApp
+{
+ /**
+ * The content type handled by the handler
+ */
+ readonly attribute AString contentType;
+
+ /**
+ * The uri of the handler, with an embedded %s where the URI of the loaded
+ * document will be encoded.
+ */
+ readonly attribute AString uri;
+
+ /**
+ * Gets the service URL Spec, with the loading document URI encoded in it.
+ * @param uri
+ * The URI of the document being loaded
+ * @returns The URI of the service with the loading document URI encoded in
+ * it.
+ */
+ AString getHandlerURI(in AString uri);
+};
+
+[scriptable, uuid(de7cc06e-e778-45cb-b7db-7a114e1e75b1)]
+interface nsIWebContentConverterService : nsIWebContentHandlerRegistrar
+{
+ /**
+ * Specifies the handler to be used to automatically handle all links of a
+ * certain content type from now on.
+ * @param contentType
+ * The content type to automatically load with the specified handler
+ * @param handler
+ * A web service handler. If this is null, no automatic action is
+ * performed and the user must choose.
+ * @throws NS_ERROR_NOT_AVAILABLE if the service refered to by |handler| is
+ * not already registered.
+ */
+ void setAutoHandler(in AString contentType, in nsIWebContentHandlerInfo handler);
+
+ /**
+ * Gets the auto handler specified for a particular content type
+ * @param contentType
+ * The content type to look up an auto handler for.
+ * @returns The web service handler that will automatically handle all
+ * documents of the specified type. null if there is no automatic
+ * handler. (Handlers may be registered, just none of them specified
+ * as "automatic").
+ */
+ nsIWebContentHandlerInfo getAutoHandler(in AString contentType);
+
+ /**
+ * Gets a web handler for the specified service URI
+ * @param contentType
+ * The content type of the service being located
+ * @param uri
+ * The service URI of the handler to locate.
+ * @returns A web service handler that uses the specified uri.
+ */
+ nsIWebContentHandlerInfo getWebContentHandlerByURI(in AString contentType,
+ in AString uri);
+
+ /**
+ * Loads the preferred handler when content of a registered type is about
+ * to be loaded.
+ * @param request
+ * The nsIRequest for the load of the content
+ */
+ void loadPreferredHandler(in nsIRequest request);
+
+ /**
+ * Removes a registered protocol handler
+ * @param protocol
+ * The protocol scheme to remove a service handler for
+ * @param uri
+ * The uri of the service handler to remove
+ */
+ void removeProtocolHandler(in AString protocol, in AString uri);
+
+ /**
+ * Removes a registered content handler
+ * @param contentType
+ * The content type to remove a service handler for
+ * @param uri
+ * The uri of the service handler to remove
+ */
+ void removeContentHandler(in AString contentType, in AString uri);
+
+ /**
+ * Gets the list of content handlers for a particular type.
+ * @param contentType
+ * The content type to get handlers for
+ * @returns An array of nsIWebContentHandlerInfo objects
+ */
+ void getContentHandlers(in AString contentType,
+ [optional] out unsigned long count,
+ [retval,array,size_is(count)] out nsIWebContentHandlerInfo handlers);
+
+ /**
+ * Resets the list of available content handlers to the default set from
+ * the distribution.
+ * @param contentType
+ * The content type to reset handlers for
+ */
+ void resetHandlersForType(in AString contentType);
+};
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 01:24:19 +0000