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Diffstat (limited to 'toolkit/components/search/nsSearchService.js')
| -rw-r--r-- | toolkit/components/search/nsSearchService.js | 4551 |
1 files changed, 4551 insertions, 0 deletions
diff --git a/toolkit/components/search/nsSearchService.js b/toolkit/components/search/nsSearchService.js new file mode 100644 index 000000000..19f4048b4 --- /dev/null +++ b/toolkit/components/search/nsSearchService.js @@ -0,0 +1,4551 @@ +# 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 Ci = Components.interfaces; +const Cc = Components.classes; +const Cr = Components.results; +const Cu = Components.utils; + +Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); +Components.utils.import("resource://gre/modules/Services.jsm"); +Components.utils.import("resource://gre/modules/Promise.jsm"); + +XPCOMUtils.defineLazyModuleGetter(this, "AsyncShutdown", + "resource://gre/modules/AsyncShutdown.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "DeferredTask", + "resource://gre/modules/DeferredTask.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "OS", + "resource://gre/modules/osfile.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "Task", + "resource://gre/modules/Task.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "Deprecated", + "resource://gre/modules/Deprecated.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "SearchStaticData", + "resource://gre/modules/SearchStaticData.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "setTimeout", + "resource://gre/modules/Timer.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "clearTimeout", + "resource://gre/modules/Timer.jsm"); + +XPCOMUtils.defineLazyServiceGetter(this, "gTextToSubURI", + "@mozilla.org/intl/texttosuburi;1", + "nsITextToSubURI"); + +Cu.importGlobalProperties(["XMLHttpRequest"]); + +// A text encoder to UTF8, used whenever we commit the +// engine metadata to disk. +XPCOMUtils.defineLazyGetter(this, "gEncoder", + function() { + return new TextEncoder(); + }); + +const MODE_RDONLY = 0x01; +const MODE_WRONLY = 0x02; +const MODE_CREATE = 0x08; +const MODE_APPEND = 0x10; +const MODE_TRUNCATE = 0x20; + +// Directory service keys +const NS_APP_SEARCH_DIR_LIST = "SrchPluginsDL"; +const NS_APP_DISTRIBUTION_SEARCH_DIR_LIST = "SrchPluginsDistDL"; +const NS_APP_USER_SEARCH_DIR = "UsrSrchPlugns"; +const NS_APP_SEARCH_DIR = "SrchPlugns"; +const NS_APP_USER_PROFILE_50_DIR = "ProfD"; + +// Loading plugins from NS_APP_SEARCH_DIR is no longer supported. +// Instead, we now load plugins from APP_SEARCH_PREFIX, where a +// list.txt file needs to exist to list available engines. +const APP_SEARCH_PREFIX = "resource://search-plugins/"; + +// Search engine "locations". If this list is changed, be sure to update +// the engine's _isDefault function accordingly. +const SEARCH_APP_DIR = 1; +const SEARCH_PROFILE_DIR = 2; +const SEARCH_IN_EXTENSION = 3; +const SEARCH_JAR = 4; + +// See documentation in nsIBrowserSearchService.idl. +const SEARCH_ENGINE_TOPIC = "browser-search-engine-modified"; +const QUIT_APPLICATION_TOPIC = "quit-application"; + +const SEARCH_ENGINE_REMOVED = "engine-removed"; +const SEARCH_ENGINE_ADDED = "engine-added"; +const SEARCH_ENGINE_CHANGED = "engine-changed"; +const SEARCH_ENGINE_LOADED = "engine-loaded"; +const SEARCH_ENGINE_CURRENT = "engine-current"; +const SEARCH_ENGINE_DEFAULT = "engine-default"; + +// The following constants are left undocumented in nsIBrowserSearchService.idl +// For the moment, they are meant for testing/debugging purposes only. + +/** + * Topic used for events involving the service itself. + */ +const SEARCH_SERVICE_TOPIC = "browser-search-service"; + +/** + * Sent whenever metadata is fully written to disk. + */ +const SEARCH_SERVICE_METADATA_WRITTEN = "write-metadata-to-disk-complete"; + +/** + * Sent whenever the cache is fully written to disk. + */ +const SEARCH_SERVICE_CACHE_WRITTEN = "write-cache-to-disk-complete"; + +// Delay for lazy serialization (ms) +const LAZY_SERIALIZE_DELAY = 100; + +// Delay for batching invalidation of the JSON cache (ms) +const CACHE_INVALIDATION_DELAY = 1000; + +// Current cache version. This should be incremented if the format of the cache +// file is modified. +const CACHE_VERSION = 7; + +const ICON_DATAURL_PREFIX = "data:image/x-icon;base64,"; + +const NEW_LINES = /(\r\n|\r|\n)/; + +// Set an arbitrary cap on the maximum icon size. Without this, large icons can +// cause big delays when loading them at startup. +const MAX_ICON_SIZE = 10000; + +// Default charset to use for sending search parameters. ISO-8859-1 is used to +// match previous nsInternetSearchService behavior. +const DEFAULT_QUERY_CHARSET = "ISO-8859-1"; + +const SEARCH_BUNDLE = "chrome://global/locale/search/search.properties"; +const BRAND_BUNDLE = "chrome://branding/locale/brand.properties"; + +const OPENSEARCH_NS_10 = "http://a9.com/-/spec/opensearch/1.0/"; +const OPENSEARCH_NS_11 = "http://a9.com/-/spec/opensearch/1.1/"; + +// Although the specification at http://opensearch.a9.com/spec/1.1/description/ +// gives the namespace names defined above, many existing OpenSearch engines +// are using the following versions. We therefore allow either. +const OPENSEARCH_NAMESPACES = [ + OPENSEARCH_NS_11, OPENSEARCH_NS_10, + "http://a9.com/-/spec/opensearchdescription/1.1/", + "http://a9.com/-/spec/opensearchdescription/1.0/" +]; + +const OPENSEARCH_LOCALNAME = "OpenSearchDescription"; + +const MOZSEARCH_NS_10 = "http://www.mozilla.org/2006/browser/search/"; +const MOZSEARCH_LOCALNAME = "SearchPlugin"; + +const URLTYPE_SUGGEST_JSON = "application/x-suggestions+json"; +const URLTYPE_SEARCH_HTML = "text/html"; +const URLTYPE_OPENSEARCH = "application/opensearchdescription+xml"; + +// Empty base document used to serialize engines to file. +const EMPTY_DOC = "<?xml version=\"1.0\"?>\n" + + "<" + MOZSEARCH_LOCALNAME + + " xmlns=\"" + MOZSEARCH_NS_10 + "\"" + + " xmlns:os=\"" + OPENSEARCH_NS_11 + "\"" + + "/>"; + +const BROWSER_SEARCH_PREF = "browser.search."; +const LOCALE_PREF = "general.useragent.locale"; + +const USER_DEFINED = "{searchTerms}"; + +// Custom search parameters +#ifdef MOZ_OFFICIAL_BRANDING +const MOZ_OFFICIAL = "official"; +#else +const MOZ_OFFICIAL = "unofficial"; +#endif +#expand const MOZ_DISTRIBUTION_ID = __MOZ_DISTRIBUTION_ID__; + +const MOZ_PARAM_LOCALE = /\{moz:locale\}/g; +const MOZ_PARAM_DIST_ID = /\{moz:distributionID\}/g; +const MOZ_PARAM_OFFICIAL = /\{moz:official\}/g; + +// Supported OpenSearch parameters +// See http://opensearch.a9.com/spec/1.1/querysyntax/#core +const OS_PARAM_USER_DEFINED = /\{searchTerms\??\}/g; +const OS_PARAM_INPUT_ENCODING = /\{inputEncoding\??\}/g; +const OS_PARAM_LANGUAGE = /\{language\??\}/g; +const OS_PARAM_OUTPUT_ENCODING = /\{outputEncoding\??\}/g; + +// Default values +const OS_PARAM_LANGUAGE_DEF = "*"; +const OS_PARAM_OUTPUT_ENCODING_DEF = "UTF-8"; +const OS_PARAM_INPUT_ENCODING_DEF = "UTF-8"; + +// "Unsupported" OpenSearch parameters. For example, we don't support +// page-based results, so if the engine requires that we send the "page index" +// parameter, we'll always send "1". +const OS_PARAM_COUNT = /\{count\??\}/g; +const OS_PARAM_START_INDEX = /\{startIndex\??\}/g; +const OS_PARAM_START_PAGE = /\{startPage\??\}/g; + +// Default values +const OS_PARAM_COUNT_DEF = "20"; // 20 results +const OS_PARAM_START_INDEX_DEF = "1"; // start at 1st result +const OS_PARAM_START_PAGE_DEF = "1"; // 1st page + +// Optional parameter +const OS_PARAM_OPTIONAL = /\{(?:\w+:)?\w+\?\}/g; + +// A array of arrays containing parameters that we don't fully support, and +// their default values. We will only send values for these parameters if +// required, since our values are just really arbitrary "guesses" that should +// give us the output we want. +var OS_UNSUPPORTED_PARAMS = [ + [OS_PARAM_COUNT, OS_PARAM_COUNT_DEF], + [OS_PARAM_START_INDEX, OS_PARAM_START_INDEX_DEF], + [OS_PARAM_START_PAGE, OS_PARAM_START_PAGE_DEF], +]; + +// The default engine update interval, in days. This is only used if an engine +// specifies an updateURL, but not an updateInterval. +const SEARCH_DEFAULT_UPDATE_INTERVAL = 7; + +// The default interval before checking again for the name of the +// default engine for the region, in seconds. Only used if the response +// from the server doesn't specify an interval. +const SEARCH_GEO_DEFAULT_UPDATE_INTERVAL = 2592000; // 30 days. + +this.__defineGetter__("FileUtils", function() { + delete this.FileUtils; + Components.utils.import("resource://gre/modules/FileUtils.jsm"); + return FileUtils; +}); + +this.__defineGetter__("NetUtil", function() { + delete this.NetUtil; + Components.utils.import("resource://gre/modules/NetUtil.jsm"); + return NetUtil; +}); + +this.__defineGetter__("gChromeReg", function() { + delete this.gChromeReg; + return this.gChromeReg = Cc["@mozilla.org/chrome/chrome-registry;1"]. + getService(Ci.nsIChromeRegistry); +}); + +/** + * Prefixed to all search debug output. + */ +const SEARCH_LOG_PREFIX = "*** Search: "; + +/** + * Outputs aText to the JavaScript console as well as to stdout. + */ +function DO_LOG(aText) { + dump(SEARCH_LOG_PREFIX + aText + "\n"); + Services.console.logStringMessage(aText); +} + +#ifdef DEBUG +/** + * In debug builds, use a live, pref-based (browser.search.log) LOG function + * to allow enabling/disabling without a restart. + */ +function PREF_LOG(aText) { + if (Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "log", false)) + DO_LOG(aText); +} +var LOG = PREF_LOG; + +#else + +/** + * Otherwise, don't log at all by default. This can be overridden at startup + * by the pref, see SearchService's _init method. + */ +var LOG = function(){}; + +#endif + +/** + * Presents an assertion dialog in non-release builds and throws. + * @param message + * A message to display + * @param resultCode + * The NS_ERROR_* value to throw. + * @throws resultCode + */ +function ERROR(message, resultCode) { + NS_ASSERT(false, SEARCH_LOG_PREFIX + message); + throw Components.Exception(message, resultCode); +} + +/** + * Logs the failure message (if browser.search.log is enabled) and throws. + * @param message + * A message to display + * @param resultCode + * The NS_ERROR_* value to throw. + * @throws resultCode or NS_ERROR_INVALID_ARG if resultCode isn't specified. + */ +function FAIL(message, resultCode) { + LOG(message); + throw Components.Exception(message, resultCode || Cr.NS_ERROR_INVALID_ARG); +} + +/** + * Truncates big blobs of (data-)URIs to console-friendly sizes + * @param str + * String to tone down + * @param len + * Maximum length of the string to return. Defaults to the length of a tweet. + */ +function limitURILength(str, len) { + len = len || 140; + if (str.length > len) + return str.slice(0, len) + "..."; + return str; +} + +/** + * Ensures an assertion is met before continuing. Should be used to indicate + * fatal errors. + * @param assertion + * An assertion that must be met + * @param message + * A message to display if the assertion is not met + * @param resultCode + * The NS_ERROR_* value to throw if the assertion is not met + * @throws resultCode + */ +function ENSURE_WARN(assertion, message, resultCode) { + NS_ASSERT(assertion, SEARCH_LOG_PREFIX + message); + if (!assertion) + throw Components.Exception(message, resultCode); +} + +function loadListener(aChannel, aEngine, aCallback) { + this._channel = aChannel; + this._bytes = []; + this._engine = aEngine; + this._callback = aCallback; +} +loadListener.prototype = { + _callback: null, + _channel: null, + _countRead: 0, + _engine: null, + _stream: null, + + QueryInterface: function SRCH_loadQI(aIID) { + if (aIID.equals(Ci.nsISupports) || + aIID.equals(Ci.nsIRequestObserver) || + aIID.equals(Ci.nsIStreamListener) || + aIID.equals(Ci.nsIChannelEventSink) || + aIID.equals(Ci.nsIInterfaceRequestor) || + // See FIXME comment below + aIID.equals(Ci.nsIHttpEventSink) || + aIID.equals(Ci.nsIProgressEventSink) || + false) + return this; + + throw Cr.NS_ERROR_NO_INTERFACE; + }, + + // nsIRequestObserver + onStartRequest: function SRCH_loadStartR(aRequest, aContext) { + LOG("loadListener: Starting request: " + aRequest.name); + this._stream = Cc["@mozilla.org/binaryinputstream;1"]. + createInstance(Ci.nsIBinaryInputStream); + }, + + onStopRequest: function SRCH_loadStopR(aRequest, aContext, aStatusCode) { + LOG("loadListener: Stopping request: " + aRequest.name); + + var requestFailed = !Components.isSuccessCode(aStatusCode); + if (!requestFailed && (aRequest instanceof Ci.nsIHttpChannel)) + requestFailed = !aRequest.requestSucceeded; + + if (requestFailed || this._countRead == 0) { + LOG("loadListener: request failed!"); + // send null so the callback can deal with the failure + this._callback(null, this._engine); + } else + this._callback(this._bytes, this._engine); + this._channel = null; + this._engine = null; + }, + + // nsIStreamListener + onDataAvailable: function SRCH_loadDAvailable(aRequest, aContext, + aInputStream, aOffset, + aCount) { + this._stream.setInputStream(aInputStream); + + // Get a byte array of the data + this._bytes = this._bytes.concat(this._stream.readByteArray(aCount)); + this._countRead += aCount; + }, + + // nsIChannelEventSink + asyncOnChannelRedirect: function SRCH_loadCRedirect(aOldChannel, aNewChannel, + aFlags, callback) { + this._channel = aNewChannel; + callback.onRedirectVerifyCallback(Components.results.NS_OK); + }, + + // nsIInterfaceRequestor + getInterface: function SRCH_load_GI(aIID) { + return this.QueryInterface(aIID); + }, + + // FIXME: bug 253127 + // nsIHttpEventSink + onRedirect: function (aChannel, aNewChannel) {}, + // nsIProgressEventSink + onProgress: function (aRequest, aContext, aProgress, aProgressMax) {}, + onStatus: function (aRequest, aContext, aStatus, aStatusArg) {} +} + +function isPartnerBuild() { + try { + let distroID = Services.prefs.getCharPref("distribution.id"); + + // Mozilla-provided builds (i.e. funnelcake) are not partner builds + if (distroID && !distroID.startsWith("mozilla")) { + return true; + } + } catch (e) {} + + return false; +} + +function getVerificationHash(aName) { + let disclaimer = "By modifying this file, I agree that I am doing so " + + "only within $appName itself, using official, user-driven search " + + "engine selection processes, and in a way which does not circumvent " + + "user consent. I acknowledge that any attempt to change this file " + + "from outside of $appName is a malicious act, and will be responded " + + "to accordingly." + + let salt = OS.Path.basename(OS.Constants.Path.profileDir) + aName + + disclaimer.replace(/\$appName/g, Services.appinfo.name); + + let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"] + .createInstance(Ci.nsIScriptableUnicodeConverter); + converter.charset = "UTF-8"; + + // Data is an array of bytes. + let data = converter.convertToByteArray(salt, {}); + let hasher = Cc["@mozilla.org/security/hash;1"] + .createInstance(Ci.nsICryptoHash); + hasher.init(hasher.SHA256); + hasher.update(data, data.length); + + return hasher.finish(true); +} + +/** + * Safely close a nsISafeOutputStream. + * @param aFOS + * The file output stream to close. + */ +function closeSafeOutputStream(aFOS) { + if (aFOS instanceof Ci.nsISafeOutputStream) { + try { + aFOS.finish(); + return; + } catch (e) { } + } + aFOS.close(); +} + +/** + * 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) { + try { + return NetUtil.newURI(aURLSpec, aCharset); + } catch (ex) { } + + return null; +} + +/** + * Wrapper function for nsIIOService::newChannel2. + * @param url + * The URL string from which to create an nsIChannel. + * @returns an nsIChannel object, or null if the url is invalid. + */ +function makeChannel(url) { + try { + return NetUtil.newChannel({uri: url, loadUsingSystemPrincipal: true}); + } catch (ex) { } + + return null; +} + +/** + * Gets a directory from the directory service. + * @param aKey + * The directory service key indicating the directory to get. + */ +function getDir(aKey, aIFace) { + if (!aKey) + FAIL("getDir requires a directory key!"); + + return Services.dirsvc.get(aKey, aIFace || Ci.nsIFile); +} + +/** + * Gets the current value of the locale. It's possible for this preference to + * be localized, so we have to do a little extra work here. Similar code + * exists in nsHttpHandler.cpp when building the UA string. + */ +function getLocale() { + let locale = getLocalizedPref(LOCALE_PREF); + if (locale) + return locale; + + // Not localized. + return Services.prefs.getCharPref(LOCALE_PREF); +} + +/** + * Wrapper for nsIPrefBranch::getComplexValue. + * @param aPrefName + * The name of the pref to get. + * @returns aDefault if the requested pref doesn't exist. + */ +function getLocalizedPref(aPrefName, aDefault) { + const nsIPLS = Ci.nsIPrefLocalizedString; + try { + return Services.prefs.getComplexValue(aPrefName, nsIPLS).data; + } catch (ex) {} + + return aDefault; +} + +/** + * Wrapper for nsIPrefBranch::setComplexValue. + * @param aPrefName + * The name of the pref to set. + */ +function setLocalizedPref(aPrefName, aValue) { + const nsIPLS = Ci.nsIPrefLocalizedString; + try { + var pls = Components.classes["@mozilla.org/pref-localizedstring;1"] + .createInstance(Ci.nsIPrefLocalizedString); + pls.data = aValue; + Services.prefs.setComplexValue(aPrefName, nsIPLS, pls); + } catch (ex) {} +} + +/** + * Get a unique nsIFile object with a sanitized name, based on the engine name. + * @param aName + * A name to "sanitize". Can be an empty string, in which case a random + * 8 character filename will be produced. + * @returns A nsIFile object in the user's search engines directory with a + * unique sanitized name. + */ +function getSanitizedFile(aName) { + var fileName = sanitizeName(aName) + ".xml"; + var file = getDir(NS_APP_USER_SEARCH_DIR); + file.append(fileName); + file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, FileUtils.PERMS_FILE); + return file; +} + +/** + * @return a sanitized name to be used as a filename, or a random name + * if a sanitized name cannot be obtained (if aName contains + * no valid characters). + */ +function sanitizeName(aName) { + const maxLength = 60; + const minLength = 1; + var name = aName.toLowerCase(); + name = name.replace(/\s+/g, "-"); + name = name.replace(/[^-a-z0-9]/g, ""); + + // Use a random name if our input had no valid characters. + if (name.length < minLength) + name = Math.random().toString(36).replace(/^.*\./, ''); + + // Force max length. + return name.substring(0, maxLength); +} + +/** + * Retrieve a pref from the search param branch. + * + * @param prefName + * The name of the pref. + **/ +function getMozParamPref(prefName) { + return Services.prefs.getCharPref(BROWSER_SEARCH_PREF + "param." + prefName); +} + +/** + * Notifies watchers of SEARCH_ENGINE_TOPIC about changes to an engine or to + * the state of the search service. + * + * @param aEngine + * The nsISearchEngine object to which the change applies. + * @param aVerb + * A verb describing the change. + * + * @see nsIBrowserSearchService.idl + */ +var gInitialized = false; +function notifyAction(aEngine, aVerb) { + if (gInitialized) { + LOG("NOTIFY: Engine: \"" + aEngine.name + "\"; Verb: \"" + aVerb + "\""); + Services.obs.notifyObservers(aEngine, SEARCH_ENGINE_TOPIC, aVerb); + } +} + +function parseJsonFromStream(aInputStream) { + const json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON); + const data = json.decodeFromStream(aInputStream, aInputStream.available()); + return data; +} + +/** + * Simple object representing a name/value pair. + */ +function QueryParameter(aName, aValue, aPurpose) { + if (!aName || (aValue == null)) + FAIL("missing name or value for QueryParameter!"); + + this.name = aName; + this.value = aValue; + this.purpose = aPurpose; +} + +/** + * Perform OpenSearch parameter substitution on aParamValue. + * + * @param aParamValue + * A string containing OpenSearch search parameters. + * @param aSearchTerms + * The user-provided search terms. This string will inserted into + * aParamValue as the value of the OS_PARAM_USER_DEFINED parameter. + * This value must already be escaped appropriately - it is inserted + * as-is. + * @param aEngine + * The engine which owns the string being acted on. + * + * @see http://opensearch.a9.com/spec/1.1/querysyntax/#core + */ +function ParamSubstitution(aParamValue, aSearchTerms, aEngine) { + var value = aParamValue; + + var distributionID = Services.prefs.getCharPref(BROWSER_SEARCH_PREF + "distributionID", + MOZ_DISTRIBUTION_ID || ""); + var official = MOZ_OFFICIAL; + try { + if (Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "official")) + official = "official"; + else + official = "unofficial"; + } + catch (ex) { } + + // Custom search parameters. These are only available to default search + // engines. + if (aEngine._isDefault) { + value = value.replace(MOZ_PARAM_LOCALE, getLocale()); + value = value.replace(MOZ_PARAM_DIST_ID, distributionID); + value = value.replace(MOZ_PARAM_OFFICIAL, official); + } + + // Insert the OpenSearch parameters we're confident about + value = value.replace(OS_PARAM_USER_DEFINED, aSearchTerms); + value = value.replace(OS_PARAM_INPUT_ENCODING, aEngine.queryCharset); + value = value.replace(OS_PARAM_LANGUAGE, + getLocale() || OS_PARAM_LANGUAGE_DEF); + value = value.replace(OS_PARAM_OUTPUT_ENCODING, + OS_PARAM_OUTPUT_ENCODING_DEF); + + // Replace any optional parameters + value = value.replace(OS_PARAM_OPTIONAL, ""); + + // Insert any remaining required params with our default values + for (var i = 0; i < OS_UNSUPPORTED_PARAMS.length; ++i) { + value = value.replace(OS_UNSUPPORTED_PARAMS[i][0], + OS_UNSUPPORTED_PARAMS[i][1]); + } + + return value; +} + +/** + * Creates an engineURL object, which holds the query URL and all parameters. + * + * @param aType + * A string containing the name of the MIME type of the search results + * returned by this URL. + * @param aMethod + * The HTTP request method. Must be a case insensitive value of either + * "GET" or "POST". + * @param aTemplate + * The URL to which search queries should be sent. For GET requests, + * must contain the string "{searchTerms}", to indicate where the user + * entered search terms should be inserted. + * @param aResultDomain + * The root domain for this URL. Defaults to the template's host. + * + * @see http://opensearch.a9.com/spec/1.1/querysyntax/#urltag + * + * @throws NS_ERROR_NOT_IMPLEMENTED if aType is unsupported. + */ +function EngineURL(aType, aMethod, aTemplate, aResultDomain) { + if (!aType || !aMethod || !aTemplate) + FAIL("missing type, method or template for EngineURL!"); + + var method = aMethod.toUpperCase(); + var type = aType.toLowerCase(); + + if (method != "GET" && method != "POST") + FAIL("method passed to EngineURL must be \"GET\" or \"POST\""); + + this.type = type; + this.method = method; + this.params = []; + this.rels = []; + // Don't serialize expanded mozparams + this.mozparams = {}; + + var templateURI = makeURI(aTemplate); + if (!templateURI) + FAIL("new EngineURL: template is not a valid URI!", Cr.NS_ERROR_FAILURE); + + switch (templateURI.scheme) { + case "http": + case "https": + // Disable these for now, see bug 295018 + // case "file": + // case "resource": + this.template = aTemplate; + break; + default: + FAIL("new EngineURL: template uses invalid scheme!", Cr.NS_ERROR_FAILURE); + } + + // If no resultDomain was specified in the engine definition file, use the + // host from the template. + this.resultDomain = aResultDomain || templateURI.host; + // We never want to return a "www." prefix, so eventually strip it. + if (this.resultDomain.startsWith("www.")) { + this.resultDomain = this.resultDomain.substr(4); + } +} +EngineURL.prototype = { + + addParam: function SRCH_EURL_addParam(aName, aValue, aPurpose) { + this.params.push(new QueryParameter(aName, aValue, aPurpose)); + }, + + // Note: This method requires that aObj has a unique name or the previous MozParams entry with + // that name will be overwritten. + _addMozParam: function SRCH_EURL__addMozParam(aObj) { + aObj.mozparam = true; + this.mozparams[aObj.name] = aObj; + }, + + getSubmission: function SRCH_EURL_getSubmission(aSearchTerms, aEngine, aPurpose) { + var url = ParamSubstitution(this.template, aSearchTerms, aEngine); + // Default to an empty string if the purpose is not provided so that default purpose params + // (purpose="") work consistently rather than having to define "null" and "" purposes. + var purpose = aPurpose || ""; + + // If the 'system' purpose isn't defined in the plugin, fallback to 'searchbar'. + if (purpose == "system" && !this.params.some(p => p.purpose == "system")) + purpose = "searchbar"; + + // Create an application/x-www-form-urlencoded representation of our params + // (name=value&name=value&name=value) + var dataString = ""; + for (var i = 0; i < this.params.length; ++i) { + var param = this.params[i]; + + // If this parameter has a purpose, only add it if the purpose matches + if (param.purpose !== undefined && param.purpose != purpose) + continue; + + var value = ParamSubstitution(param.value, aSearchTerms, aEngine); + + dataString += (i > 0 ? "&" : "") + param.name + "=" + value; + } + + var postData = null; + if (this.method == "GET") { + // GET method requests have no post data, and append the encoded + // query string to the url... + if (url.indexOf("?") == -1 && dataString) + url += "?"; + url += dataString; + } else if (this.method == "POST") { + // POST method requests must wrap the encoded text in a MIME + // stream and supply that as POSTDATA. + var stringStream = Cc["@mozilla.org/io/string-input-stream;1"]. + createInstance(Ci.nsIStringInputStream); + stringStream.data = dataString; + + postData = Cc["@mozilla.org/network/mime-input-stream;1"]. + createInstance(Ci.nsIMIMEInputStream); + postData.addHeader("Content-Type", "application/x-www-form-urlencoded"); + postData.addContentLength = true; + postData.setData(stringStream); + } + + return new Submission(makeURI(url), postData); + }, + + _getTermsParameterName: function SRCH_EURL__getTermsParameterName() { + let queryParam = this.params.find(p => p.value == USER_DEFINED); + return queryParam ? queryParam.name : ""; + }, + + _hasRelation: function SRC_EURL__hasRelation(aRel) { + return this.rels.some(e => e == aRel.toLowerCase()); + }, + + _initWithJSON: function SRC_EURL__initWithJSON(aJson, aEngine) { + if (!aJson.params) + return; + + this.rels = aJson.rels; + + for (let i = 0; i < aJson.params.length; ++i) { + let param = aJson.params[i]; + if (param.mozparam) { + if (param.condition == "pref") { + let value = getMozParamPref(param.pref); + this.addParam(param.name, value); + } + this._addMozParam(param); + } + else + this.addParam(param.name, param.value, param.purpose); + } + }, + + /** + * Creates a JavaScript object that represents this URL. + * @returns An object suitable for serialization as JSON. + **/ + toJSON: function SRCH_EURL_toJSON() { + var json = { + template: this.template, + rels: this.rels, + resultDomain: this.resultDomain + }; + + if (this.type != URLTYPE_SEARCH_HTML) + json.type = this.type; + if (this.method != "GET") + json.method = this.method; + + function collapseMozParams(aParam) { + return this.mozparams[aParam.name] || aParam; + } + json.params = this.params.map(collapseMozParams, this); + + return json; + }, + + /** + * Serializes the engine object to a OpenSearch Url element. + * @param aDoc + * The document to use to create the Url element. + * @param aElement + * The element to which the created Url element is appended. + * + * @see http://opensearch.a9.com/spec/1.1/querysyntax/#urltag + */ + _serializeToElement: function SRCH_EURL_serializeToEl(aDoc, aElement) { + var url = aDoc.createElementNS(OPENSEARCH_NS_11, "Url"); + url.setAttribute("type", this.type); + url.setAttribute("method", this.method); + url.setAttribute("template", this.template); + if (this.rels.length) + url.setAttribute("rel", this.rels.join(" ")); + if (this.resultDomain) + url.setAttribute("resultDomain", this.resultDomain); + + for (var i = 0; i < this.params.length; ++i) { + var param = aDoc.createElementNS(OPENSEARCH_NS_11, "Param"); + param.setAttribute("name", this.params[i].name); + param.setAttribute("value", this.params[i].value); + url.appendChild(aDoc.createTextNode("\n ")); + url.appendChild(param); + } + url.appendChild(aDoc.createTextNode("\n")); + aElement.appendChild(url); + } +}; + +/** + * nsISearchEngine constructor. + * @param aLocation + * A nsILocalFile or nsIURI object representing the location of the + * search engine data file. + * @param aIsReadOnly + * Boolean indicating whether the engine should be treated as read-only. + * Read only engines cannot be serialized to file. + */ +function Engine(aLocation, aIsReadOnly) { + this._readOnly = aIsReadOnly; + this._urls = []; + + if (aLocation.type) { + if (aLocation.type == "filePath") + this._file = aLocation.value; + else if (aLocation.type == "uri") + this._uri = aLocation.value; + } else if (aLocation instanceof Ci.nsILocalFile) { + // we already have a file (e.g. loading engines from disk) + this._file = aLocation; + } else if (aLocation instanceof Ci.nsIURI) { + switch (aLocation.scheme) { + case "https": + case "http": + case "ftp": + case "data": + case "file": + case "resource": + case "chrome": + this._uri = aLocation; + break; + default: + ERROR("Invalid URI passed to the nsISearchEngine constructor", + Cr.NS_ERROR_INVALID_ARG); + } + } else + ERROR("Engine location is neither a File nor a URI object", + Cr.NS_ERROR_INVALID_ARG); +} + +Engine.prototype = { + // The engine's alias (can be null). Initialized to |undefined| to indicate + // not-initialized-from-engineMetadataService. + _alias: undefined, + // A distribution-unique identifier for the engine. Either null or set + // when loaded. See getter. + _identifier: undefined, + // The data describing the engine, in the form of an XML document element. + _data: null, + // Whether or not the engine is readonly. + _readOnly: true, + // The engine's description + _description: "", + // Used to store the engine to replace, if we're an update to an existing + // engine. + _engineToUpdate: null, + // The file from which the plugin was loaded. + __file: null, + get _file() { + if (this.__file && !(this.__file instanceof Ci.nsILocalFile)) { + let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile); + file.persistentDescriptor = this.__file; + return this.__file = file; + } + return this.__file; + }, + set _file(aValue) { + this.__file = aValue; + }, + // Set to true if the engine has a preferred icon (an icon that should not be + // overridden by a non-preferred icon). + _hasPreferredIcon: null, + // The engine's name. + _name: null, + // The name of the charset used to submit the search terms. + _queryCharset: null, + // The engine's raw SearchForm value (URL string pointing to a search form). + __searchForm: null, + get _searchForm() { + return this.__searchForm; + }, + set _searchForm(aValue) { + if (/^https?:/i.test(aValue)) + this.__searchForm = aValue; + else + LOG("_searchForm: Invalid URL dropped for " + this._name || + "the current engine"); + }, + // The URI object from which the engine was retrieved. + // This is null for engines loaded from disk, but present for engines loaded + // from chrome:// URIs. + __uri: null, + get _uri() { + if (this.__uri && !(this.__uri instanceof Ci.nsIURI)) + this.__uri = makeURI(this.__uri); + + return this.__uri; + }, + set _uri(aValue) { + this.__uri = aValue; + }, + // Whether to obtain user confirmation before adding the engine. This is only + // used when the engine is first added to the list. + _confirm: false, + // Whether to set this as the current engine as soon as it is loaded. This + // is only used when the engine is first added to the list. + _useNow: false, + // A function to be invoked when this engine object's addition completes (or + // fails). Only used for installation via addEngine. + _installCallback: null, + // Where the engine was loaded from. Can be one of: SEARCH_APP_DIR, + // SEARCH_PROFILE_DIR, SEARCH_IN_EXTENSION. + __installLocation: null, + // The number of days between update checks for new versions + _updateInterval: null, + // The url to check at for a new update + _updateURL: null, + // The url to check for a new icon + _iconUpdateURL: null, + /* Deferred serialization task. */ + _lazySerializeTask: null, + /* The extension ID if added by an extension. */ + _extensionID: null, + + /** + * Retrieves the data from the engine's file. + * The document element is placed in the engine's data field. + */ + _initFromFile: function SRCH_ENG_initFromFile() { + if (!this._file || !this._file.exists()) + FAIL("File must exist before calling initFromFile!", Cr.NS_ERROR_UNEXPECTED); + + var fileInStream = Cc["@mozilla.org/network/file-input-stream;1"]. + createInstance(Ci.nsIFileInputStream); + + fileInStream.init(this._file, MODE_RDONLY, FileUtils.PERMS_FILE, false); + + var domParser = Cc["@mozilla.org/xmlextras/domparser;1"]. + createInstance(Ci.nsIDOMParser); + var doc = domParser.parseFromStream(fileInStream, "UTF-8", + this._file.fileSize, + "text/xml"); + + this._data = doc.documentElement; + fileInStream.close(); + + // Now that the data is loaded, initialize the engine object + this._initFromData(); + }, + + /** + * Retrieves the data from the engine's file asynchronously. + * The document element is placed in the engine's data field. + * + * @returns {Promise} A promise, resolved successfully if initializing from + * data succeeds, rejected if it fails. + */ + _asyncInitFromFile: function SRCH_ENG__asyncInitFromFile() { + return Task.spawn(function() { + if (!this._file || !(yield OS.File.exists(this._file.path))) + FAIL("File must exist before calling initFromFile!", Cr.NS_ERROR_UNEXPECTED); + + let fileURI = NetUtil.ioService.newFileURI(this._file); + yield this._retrieveSearchXMLData(fileURI.spec); + + // Now that the data is loaded, initialize the engine object + this._initFromData(); + }.bind(this)); + }, + + /** + * Retrieves the engine data from a URI. Initializes the engine, flushes to + * disk, and notifies the search service once initialization is complete. + */ + _initFromURIAndLoad: function SRCH_ENG_initFromURIAndLoad() { + ENSURE_WARN(this._uri instanceof Ci.nsIURI, + "Must have URI when calling _initFromURIAndLoad!", + Cr.NS_ERROR_UNEXPECTED); + + LOG("_initFromURIAndLoad: Downloading engine from: \"" + this._uri.spec + "\"."); + + var chan = NetUtil.ioService.newChannelFromURI2(this._uri, + null, // aLoadingNode + Services.scriptSecurityManager.getSystemPrincipal(), + null, // aTriggeringPrincipal + Ci.nsILoadInfo.SEC_NORMAL, + Ci.nsIContentPolicy.TYPE_OTHER); + + if (this._engineToUpdate && (chan instanceof Ci.nsIHttpChannel)) { + var lastModified = engineMetadataService.getAttr(this._engineToUpdate, + "updatelastmodified"); + if (lastModified) + chan.setRequestHeader("If-Modified-Since", lastModified, false); + } + var listener = new loadListener(chan, this, this._onLoad); + chan.notificationCallbacks = listener; + chan.asyncOpen(listener, null); + }, + + /** + * Retrieves the engine data from a URI asynchronously and initializes it. + * + * @returns {Promise} A promise, resolved successfully if retrieveing data + * succeeds. + */ + _asyncInitFromURI: function SRCH_ENG__asyncInitFromURI() { + return Task.spawn(function() { + LOG("_asyncInitFromURI: Loading engine from: \"" + this._uri.spec + "\"."); + yield this._retrieveSearchXMLData(this._uri.spec); + // Now that the data is loaded, initialize the engine object + this._initFromData(); + }.bind(this)); + }, + + /** + * Retrieves the engine data for a given URI asynchronously. + * + * @returns {Promise} A promise, resolved successfully if retrieveing data + * succeeds. + */ + _retrieveSearchXMLData: function SRCH_ENG__retrieveSearchXMLData(aURL) { + let deferred = Promise.defer(); + let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]. + createInstance(Ci.nsIXMLHttpRequest); + request.overrideMimeType("text/xml"); + request.onload = (aEvent) => { + let responseXML = aEvent.target.responseXML; + this._data = responseXML.documentElement; + deferred.resolve(); + }; + request.onerror = function(aEvent) { + deferred.resolve(); + }; + request.open("GET", aURL, true); + request.send(); + + return deferred.promise; + }, + + _initFromURISync: function SRCH_ENG_initFromURISync() { + ENSURE_WARN(this._uri instanceof Ci.nsIURI, + "Must have URI when calling _initFromURISync!", + Cr.NS_ERROR_UNEXPECTED); + + ENSURE_WARN(this._uri.schemeIs("resource"), "_initFromURISync called for non-resource URI", + Cr.NS_ERROR_FAILURE); + + LOG("_initFromURISync: Loading engine from: \"" + this._uri.spec + "\"."); + + var chan = NetUtil.ioService.newChannelFromURI2(this._uri, + null, // aLoadingNode + Services.scriptSecurityManager.getSystemPrincipal(), + null, // aTriggeringPrincipal + Ci.nsILoadInfo.SEC_NORMAL, + Ci.nsIContentPolicy.TYPE_OTHER); + + var stream = chan.open(); + var parser = Cc["@mozilla.org/xmlextras/domparser;1"]. + createInstance(Ci.nsIDOMParser); + var doc = parser.parseFromStream(stream, "UTF-8", stream.available(), "text/xml"); + + this._data = doc.documentElement; + + // Now that the data is loaded, initialize the engine object + this._initFromData(); + }, + + /** + * Attempts to find an EngineURL object in the set of EngineURLs for + * this Engine that has the given type string. (This corresponds to the + * "type" attribute in the "Url" node in the OpenSearch spec.) + * This method will return the first matching URL object found, or null + * if no matching URL is found. + * + * @param aType string to match the EngineURL's type attribute + * @param aRel [optional] only return URLs that with this rel value + */ + _getURLOfType: function SRCH_ENG__getURLOfType(aType, aRel) { + for (var i = 0; i < this._urls.length; ++i) { + if (this._urls[i].type == aType && (!aRel || this._urls[i]._hasRelation(aRel))) + return this._urls[i]; + } + + return null; + }, + + _confirmAddEngine: function SRCH_SVC_confirmAddEngine() { + var stringBundle = Services.strings.createBundle(SEARCH_BUNDLE); + var titleMessage = stringBundle.GetStringFromName("addEngineConfirmTitle"); + + // Display only the hostname portion of the URL. + var dialogMessage = + stringBundle.formatStringFromName("addEngineConfirmation", + [this._name, this._uri.host], 2); + var checkboxMessage = null; + if (!Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "noCurrentEngine", false)) + checkboxMessage = stringBundle.GetStringFromName("addEngineAsCurrentText"); + + var addButtonLabel = + stringBundle.GetStringFromName("addEngineAddButtonLabel"); + + var ps = Services.prompt; + var buttonFlags = (ps.BUTTON_TITLE_IS_STRING * ps.BUTTON_POS_0) + + (ps.BUTTON_TITLE_CANCEL * ps.BUTTON_POS_1) + + ps.BUTTON_POS_0_DEFAULT; + + var checked = {value: false}; + // confirmEx returns the index of the button that was pressed. Since "Add" + // is button 0, we want to return the negation of that value. + var confirm = !ps.confirmEx(null, + titleMessage, + dialogMessage, + buttonFlags, + addButtonLabel, + null, null, // button 1 & 2 names not used + checkboxMessage, + checked); + + return {confirmed: confirm, useNow: checked.value}; + }, + + /** + * Handle the successful download of an engine. Initializes the engine and + * triggers parsing of the data. The engine is then flushed to disk. Notifies + * the search service once initialization is complete. + */ + _onLoad: function SRCH_ENG_onLoad(aBytes, aEngine) { + /** + * Handle an error during the load of an engine by notifying the engine's + * error callback, if any. + */ + function onError(errorCode = Ci.nsISearchInstallCallback.ERROR_UNKNOWN_FAILURE) { + // Notify the callback of the failure + if (aEngine._installCallback) { + aEngine._installCallback(errorCode); + } + } + + function promptError(strings = {}, error = undefined) { + onError(error); + + if (aEngine._engineToUpdate) { + // We're in an update, so just fail quietly + LOG("updating " + aEngine._engineToUpdate.name + " failed"); + return; + } + var brandBundle = Services.strings.createBundle(BRAND_BUNDLE); + var brandName = brandBundle.GetStringFromName("brandShortName"); + + var searchBundle = Services.strings.createBundle(SEARCH_BUNDLE); + var msgStringName = strings.error || "error_loading_engine_msg2"; + var titleStringName = strings.title || "error_loading_engine_title"; + var title = searchBundle.GetStringFromName(titleStringName); + var text = searchBundle.formatStringFromName(msgStringName, + [brandName, aEngine._location], + 2); + + Services.ww.getNewPrompter(null).alert(title, text); + } + + if (!aBytes) { + promptError(); + return; + } + + var engineToUpdate = null; + if (aEngine._engineToUpdate) { + engineToUpdate = aEngine._engineToUpdate.wrappedJSObject; + + // Make this new engine use the old engine's file. + aEngine._file = engineToUpdate._file; + } + + var parser = Cc["@mozilla.org/xmlextras/domparser;1"]. + createInstance(Ci.nsIDOMParser); + var doc = parser.parseFromBuffer(aBytes, aBytes.length, "text/xml"); + aEngine._data = doc.documentElement; + + try { + // Initialize the engine from the obtained data + aEngine._initFromData(); + } catch (ex) { + LOG("_onLoad: Failed to init engine!\n" + ex); + // Report an error to the user + promptError(); + return; + } + + // Check that when adding a new engine (e.g., not updating an + // existing one), a duplicate engine does not already exist. + if (!engineToUpdate) { + if (Services.search.getEngineByName(aEngine.name)) { + // If we're confirming the engine load, then display a "this is a + // duplicate engine" prompt; otherwise, fail silently. + if (aEngine._confirm) { + promptError({ error: "error_duplicate_engine_msg", + title: "error_invalid_engine_title" + }, Ci.nsISearchInstallCallback.ERROR_DUPLICATE_ENGINE); + } else { + onError(Ci.nsISearchInstallCallback.ERROR_DUPLICATE_ENGINE); + } + LOG("_onLoad: duplicate engine found, bailing"); + return; + } + } + + // If requested, confirm the addition now that we have the title. + // This property is only ever true for engines added via + // nsIBrowserSearchService::addEngine. + if (aEngine._confirm) { + var confirmation = aEngine._confirmAddEngine(); + LOG("_onLoad: confirm is " + confirmation.confirmed + + "; useNow is " + confirmation.useNow); + if (!confirmation.confirmed) { + onError(); + return; + } + aEngine._useNow = confirmation.useNow; + } + + // If we don't yet have a file, get one now. The only case where we would + // already have a file is if this is an update and _file was set above. + if (!aEngine._file) + aEngine._file = getSanitizedFile(aEngine.name); + + if (engineToUpdate) { + // Keep track of the last modified date, so that we can make conditional + // requests for future updates. + engineMetadataService.setAttr(aEngine, "updatelastmodified", + (new Date()).toUTCString()); + + // If we're updating an app-shipped engine, ensure that the updateURLs + // are the same. + if (engineToUpdate._isInAppDir) { + let oldUpdateURL = engineToUpdate._updateURL; + let newUpdateURL = aEngine._updateURL; + let oldSelfURL = engineToUpdate._getURLOfType(URLTYPE_OPENSEARCH, "self"); + if (oldSelfURL) { + oldUpdateURL = oldSelfURL.template; + let newSelfURL = aEngine._getURLOfType(URLTYPE_OPENSEARCH, "self"); + if (!newSelfURL) { + LOG("_onLoad: updateURL missing in updated engine for " + + aEngine.name + " aborted"); + onError(); + return; + } + newUpdateURL = newSelfURL.template; + } + + if (oldUpdateURL != newUpdateURL) { + LOG("_onLoad: updateURLs do not match! Update of " + aEngine.name + " aborted"); + onError(); + return; + } + } + + // Set the new engine's icon, if it doesn't yet have one. + if (!aEngine._iconURI && engineToUpdate._iconURI) + aEngine._iconURI = engineToUpdate._iconURI; + } + + // Write the engine to file. For readOnly engines, they'll be stored in the + // cache following the notification below. + if (!aEngine._readOnly) + aEngine._serializeToFile(); + + // Notify the search service of the successful load. It will deal with + // updates by checking aEngine._engineToUpdate. + notifyAction(aEngine, SEARCH_ENGINE_LOADED); + + // Notify the callback if needed + if (aEngine._installCallback) { + aEngine._installCallback(); + } + }, + + /** + * Creates a key by serializing an object that contains the icon's width + * and height. + * + * @param aWidth + * Width of the icon. + * @param aHeight + * Height of the icon. + * @returns key string + */ + _getIconKey: function SRCH_ENG_getIconKey(aWidth, aHeight) { + let keyObj = { + width: aWidth, + height: aHeight + }; + + return JSON.stringify(keyObj); + }, + + /** + * Add an icon to the icon map used by getIconURIBySize() and getIcons(). + * + * @param aWidth + * Width of the icon. + * @param aHeight + * Height of the icon. + * @param aURISpec + * String with the icon's URI. + */ + _addIconToMap: function SRCH_ENG_addIconToMap(aWidth, aHeight, aURISpec) { + // Use an object instead of a Map() because it needs to be serializable. + this._iconMapObj = this._iconMapObj || {}; + let key = this._getIconKey(aWidth, aHeight); + this._iconMapObj[key] = aURISpec; + }, + + /** + * Sets the .iconURI property of the engine. If both aWidth and aHeight are + * provided an entry will be added to _iconMapObj that will enable accessing + * icon's data through getIcons() and getIconURIBySize() APIs. + * + * @param aIconURL + * A URI string pointing to the engine's icon. Must have a http[s], + * ftp, or data scheme. Icons with HTTP[S] or FTP schemes will be + * downloaded and converted to data URIs for storage in the engine + * XML files, if the engine is not readonly. + * @param aIsPreferred + * Whether or not this icon is to be preferred. Preferred icons can + * override non-preferred icons. + * @param aWidth (optional) + * Width of the icon. + * @param aHeight (optional) + * Height of the icon. + */ + _setIcon: function SRCH_ENG_setIcon(aIconURL, aIsPreferred, aWidth, aHeight) { + var uri = makeURI(aIconURL); + + // Ignore bad URIs + if (!uri) + return; + + LOG("_setIcon: Setting icon url \"" + limitURILength(uri.spec) + "\" for engine \"" + + this.name + "\"."); + // Only accept remote icons from http[s] or ftp + switch (uri.scheme) { + case "data": + if (!this._hasPreferredIcon || aIsPreferred) { + this._iconURI = uri; + notifyAction(this, SEARCH_ENGINE_CHANGED); + this._hasPreferredIcon = aIsPreferred; + } + + if (aWidth && aHeight) { + this._addIconToMap(aWidth, aHeight, aIconURL) + } + break; + case "http": + case "https": + case "ftp": + // No use downloading the icon if the engine file is read-only + LOG("_setIcon: Downloading icon: \"" + uri.spec + + "\" for engine: \"" + this.name + "\""); + var chan = NetUtil.ioService.newChannelFromURI2(uri, + null, // aLoadingNode + Services.scriptSecurityManager.getSystemPrincipal(), + null, // aTriggeringPrincipal + Ci.nsILoadInfo.SEC_NORMAL, + Ci.nsIContentPolicy.TYPE_INTERNAL_IMAGE); + + let iconLoadCallback = function (aByteArray, aEngine) { + // This callback may run after we've already set a preferred icon, + // so check again. + if (aEngine._hasPreferredIcon && !aIsPreferred) + return; + + if (!aByteArray || aByteArray.length > MAX_ICON_SIZE) { + LOG("iconLoadCallback: load failed, or the icon was too large!"); + return; + } + + var str = btoa(String.fromCharCode.apply(null, aByteArray)); + let dataURL = ICON_DATAURL_PREFIX + str; + aEngine._iconURI = makeURI(dataURL); + + if (aWidth && aHeight) { + aEngine._addIconToMap(aWidth, aHeight, dataURL) + } + + // The engine might not have a file yet, if it's being downloaded, + // because the request for the engine file itself (_onLoad) may not + // yet be complete. In that case, this change will be written to + // file when _onLoad is called. For readonly engines, we'll store + // the changes in the cache once notified below. + if (aEngine._file && !aEngine._readOnly) + aEngine._serializeToFile(); + + notifyAction(aEngine, SEARCH_ENGINE_CHANGED); + aEngine._hasPreferredIcon = aIsPreferred; + } + + // If we're currently acting as an "update engine", then the callback + // should set the icon on the engine we're updating and not us, since + // |this| might be gone by the time the callback runs. + var engineToSet = this._engineToUpdate || this; + + var listener = new loadListener(chan, engineToSet, iconLoadCallback); + chan.notificationCallbacks = listener; + chan.asyncOpen(listener, null); + break; + } + }, + + /** + * Initialize this Engine object from the collected data. + */ + _initFromData: function SRCH_ENG_initFromData() { + ENSURE_WARN(this._data, "Can't init an engine with no data!", + Cr.NS_ERROR_UNEXPECTED); + + // Ensure we have a supported engine type before attempting to parse it. + let element = this._data; + if ((element.localName == MOZSEARCH_LOCALNAME && + element.namespaceURI == MOZSEARCH_NS_10) || + (element.localName == OPENSEARCH_LOCALNAME && + OPENSEARCH_NAMESPACES.indexOf(element.namespaceURI) != -1)) { + LOG("_init: Initing search plugin from " + this._location); + + this._parse(); + + } else + FAIL(this._location + " is not a valid search plugin.", Cr.NS_ERROR_FAILURE); + + // No need to keep a ref to our data (which in some cases can be a document + // element) past this point + this._data = null; + }, + + /** + * Initialize this Engine object from a collection of metadata. + */ + _initFromMetadata: function SRCH_ENG_initMetaData(aName, aIconURL, aAlias, + aDescription, aMethod, + aTemplate, aExtensionID) { + ENSURE_WARN(!this._readOnly, + "Can't call _initFromMetaData on a readonly engine!", + Cr.NS_ERROR_FAILURE); + + this._urls.push(new EngineURL(URLTYPE_SEARCH_HTML, aMethod, aTemplate)); + + this._name = aName; + this.alias = aAlias; + this._description = aDescription; + this._setIcon(aIconURL, true); + this._extensionID = aExtensionID; + + this._serializeToFile(); + }, + + /** + * Extracts data from an OpenSearch URL element and creates an EngineURL + * object which is then added to the engine's list of URLs. + * + * @throws NS_ERROR_FAILURE if a URL object could not be created. + * + * @see http://opensearch.a9.com/spec/1.1/querysyntax/#urltag. + * @see EngineURL() + */ + _parseURL: function SRCH_ENG_parseURL(aElement) { + var type = aElement.getAttribute("type"); + // According to the spec, method is optional, defaulting to "GET" if not + // specified + var method = aElement.getAttribute("method") || "GET"; + var template = aElement.getAttribute("template"); + var resultDomain = aElement.getAttribute("resultdomain"); + + try { + var url = new EngineURL(type, method, template, resultDomain); + } catch (ex) { + FAIL("_parseURL: failed to add " + template + " as a URL", + Cr.NS_ERROR_FAILURE); + } + + if (aElement.hasAttribute("rel")) + url.rels = aElement.getAttribute("rel").toLowerCase().split(/\s+/); + + for (var i = 0; i < aElement.childNodes.length; ++i) { + var param = aElement.childNodes[i]; + if (param.localName == "Param") { + try { + url.addParam(param.getAttribute("name"), param.getAttribute("value")); + } catch (ex) { + // Ignore failure + LOG("_parseURL: Url element has an invalid param"); + } + } else if (param.localName == "MozParam" && + // We only support MozParams for default search engines + this._isDefault) { + var value; + let condition = param.getAttribute("condition"); + + // MozParams must have a condition to be valid + if (!condition) { + let engineLoc = this._location; + let paramName = param.getAttribute("name"); + LOG("_parseURL: MozParam (" + paramName + ") without a condition attribute found parsing engine: " + engineLoc); + continue; + } + + switch (condition) { + case "purpose": + url.addParam(param.getAttribute("name"), + param.getAttribute("value"), + param.getAttribute("purpose")); + // _addMozParam is not needed here since it can be serialized fine without. _addMozParam + // also requires a unique "name" which is not normally the case when @purpose is used. + break; + case "pref": + try { + value = getMozParamPref(param.getAttribute("pref"), value); + url.addParam(param.getAttribute("name"), value); + url._addMozParam({"pref": param.getAttribute("pref"), + "name": param.getAttribute("name"), + "condition": "pref"}); + } catch (e) { } + break; + default: + let engineLoc = this._location; + let paramName = param.getAttribute("name"); + LOG("_parseURL: MozParam (" + paramName + ") has an unknown condition: " + condition + ". Found parsing engine: " + engineLoc); + break; + } + } + } + + this._urls.push(url); + }, + + /** + * Get the icon from an OpenSearch Image element. + * @see http://opensearch.a9.com/spec/1.1/description/#image + */ + _parseImage: function SRCH_ENG_parseImage(aElement) { + LOG("_parseImage: Image textContent: \"" + limitURILength(aElement.textContent) + "\""); + + let width = parseInt(aElement.getAttribute("width"), 10); + let height = parseInt(aElement.getAttribute("height"), 10); + let isPrefered = width == 16 && height == 16; + + if (isNaN(width) || isNaN(height) || width <= 0 || height <=0) { + LOG("OpenSearch image element must have positive width and height."); + return; + } + + this._setIcon(aElement.textContent, isPrefered, width, height); + }, + + /** + * Extract search engine information from the collected data to initialize + * the engine object. + */ + _parse: function SRCH_ENG_parse() { + var doc = this._data; + + // The OpenSearch spec sets a default value for the input encoding. + this._queryCharset = OS_PARAM_INPUT_ENCODING_DEF; + + for (var i = 0; i < doc.childNodes.length; ++i) { + var child = doc.childNodes[i]; + switch (child.localName) { + case "ShortName": + this._name = child.textContent; + break; + case "Description": + this._description = child.textContent; + break; + case "Url": + try { + this._parseURL(child); + } catch (ex) { + // Parsing of the element failed, just skip it. + LOG("_parse: failed to parse URL child: " + ex); + } + break; + case "Image": + this._parseImage(child); + break; + case "InputEncoding": + this._queryCharset = child.textContent.toUpperCase(); + break; + + // Non-OpenSearch elements + case "SearchForm": + this._searchForm = child.textContent; + break; + case "UpdateUrl": + this._updateURL = child.textContent; + break; + case "UpdateInterval": + this._updateInterval = parseInt(child.textContent); + break; + case "IconUpdateUrl": + this._iconUpdateURL = child.textContent; + break; + case "ExtensionID": + this._extensionID = child.textContent; + break; + } + } + if (!this.name || (this._urls.length == 0)) + FAIL("_parse: No name, or missing URL!", Cr.NS_ERROR_FAILURE); + if (!this.supportsResponseType(URLTYPE_SEARCH_HTML)) + FAIL("_parse: No text/html result type!", Cr.NS_ERROR_FAILURE); + }, + + /** + * Init from a JSON record. + **/ + _initWithJSON: function SRCH_ENG__initWithJSON(aJson) { + this.__id = aJson._id; + this._name = aJson._name; + this._description = aJson.description; + if (aJson._hasPreferredIcon == undefined) + this._hasPreferredIcon = true; + else + this._hasPreferredIcon = false; + this._queryCharset = aJson.queryCharset || DEFAULT_QUERY_CHARSET; + this.__searchForm = aJson.__searchForm; + this.__installLocation = aJson._installLocation || SEARCH_APP_DIR; + this._updateInterval = aJson._updateInterval || null; + this._updateURL = aJson._updateURL || null; + this._iconUpdateURL = aJson._iconUpdateURL || null; + if (aJson._readOnly == undefined) + this._readOnly = true; + else + this._readOnly = false; + this._iconURI = makeURI(aJson._iconURL); + this._iconMapObj = aJson._iconMapObj; + if (aJson.extensionID) { + this._extensionID = aJson.extensionID; + } + for (let i = 0; i < aJson._urls.length; ++i) { + let url = aJson._urls[i]; + let engineURL = new EngineURL(url.type || URLTYPE_SEARCH_HTML, + url.method || "GET", url.template, + url.resultDomain); + engineURL._initWithJSON(url, this); + this._urls.push(engineURL); + } + }, + + /** + * Creates a JavaScript object that represents this engine. + * @returns An object suitable for serialization as JSON. + **/ + toJSON: function SRCH_ENG_toJSON() { + var json = { + _id: this._id, + _name: this._name, + description: this.description, + __searchForm: this.__searchForm, + _iconURL: this._iconURL, + _iconMapObj: this._iconMapObj, + _urls: this._urls + }; + + if (this._file instanceof Ci.nsILocalFile) + json.filePath = this._file.persistentDescriptor; + if (this._uri) + json._url = this._uri.spec; + if (this._installLocation != SEARCH_APP_DIR) + json._installLocation = this._installLocation; + if (this._updateInterval) + json._updateInterval = this._updateInterval; + if (this._updateURL) + json._updateURL = this._updateURL; + if (this._iconUpdateURL) + json._iconUpdateURL = this._iconUpdateURL; + if (!this._hasPreferredIcon) + json._hasPreferredIcon = this._hasPreferredIcon; + if (this.queryCharset != DEFAULT_QUERY_CHARSET) + json.queryCharset = this.queryCharset; + if (!this._readOnly) + json._readOnly = this._readOnly; + if (this._extensionID) { + json.extensionID = this._extensionID; + } + + return json; + }, + + /** + * Returns an XML document object containing the search plugin information, + * which can later be used to reload the engine. + */ + _serializeToElement: function SRCH_ENG_serializeToEl() { + function appendTextNode(aNameSpace, aLocalName, aValue) { + if (!aValue) + return null; + var node = doc.createElementNS(aNameSpace, aLocalName); + node.appendChild(doc.createTextNode(aValue)); + docElem.appendChild(node); + docElem.appendChild(doc.createTextNode("\n")); + return node; + } + + var parser = Cc["@mozilla.org/xmlextras/domparser;1"]. + createInstance(Ci.nsIDOMParser); + + var doc = parser.parseFromString(EMPTY_DOC, "text/xml"); + var docElem = doc.documentElement; + + docElem.appendChild(doc.createTextNode("\n")); + + appendTextNode(OPENSEARCH_NS_11, "ShortName", this.name); + appendTextNode(OPENSEARCH_NS_11, "Description", this._description); + appendTextNode(OPENSEARCH_NS_11, "InputEncoding", this._queryCharset); + + if (this._iconURI) { + var imageNode = appendTextNode(OPENSEARCH_NS_11, "Image", + this._iconURI.spec); + if (imageNode) { + imageNode.setAttribute("width", "16"); + imageNode.setAttribute("height", "16"); + } + } + + appendTextNode(MOZSEARCH_NS_10, "UpdateInterval", this._updateInterval); + appendTextNode(MOZSEARCH_NS_10, "UpdateUrl", this._updateURL); + appendTextNode(MOZSEARCH_NS_10, "IconUpdateUrl", this._iconUpdateURL); + appendTextNode(MOZSEARCH_NS_10, "SearchForm", this._searchForm); + + if (this._extensionID) { + appendTextNode(MOZSEARCH_NS_10, "ExtensionID", this._extensionID); + } + + for (var i = 0; i < this._urls.length; ++i) + this._urls[i]._serializeToElement(doc, docElem); + docElem.appendChild(doc.createTextNode("\n")); + + return doc; + }, + + get lazySerializeTask() { + if (!this._lazySerializeTask) { + let task = function taskCallback() { + // This check should be done by caller, but it is better to be safe than sorry. + if (!this._readOnly && this._file) { + this._serializeToFile(); + } + }.bind(this); + this._lazySerializeTask = new DeferredTask(task, LAZY_SERIALIZE_DELAY); + } + + return this._lazySerializeTask; + }, + + // This API is required by some search engine management extensions, so let's restore it. + // Old API was using a timer to do its work, but this can lead us too far. If extension is + // rely on such subtle internal details, that extension should be fixed, not browser. + _lazySerializeToFile: function SRCH_ENG_lazySerializeToFile() { + // This check should be done by caller, but it is better to be safe than sorry. + // Besides, we don't have to create a task for r/o or non-file engines. + if (!this._readOnly && this._file) { + this.lazySerializeTask.arm(); + } + }, + + /** + * Serializes the engine object to file. + */ + _serializeToFile: function SRCH_ENG_serializeToFile() { + var file = this._file; + ENSURE_WARN(!this._readOnly, "Can't serialize a read only engine!", + Cr.NS_ERROR_FAILURE); + ENSURE_WARN(file && file.exists(), "Can't serialize: file doesn't exist!", + Cr.NS_ERROR_UNEXPECTED); + + var fos = Cc["@mozilla.org/network/safe-file-output-stream;1"]. + createInstance(Ci.nsIFileOutputStream); + + // Serialize the engine first - we don't want to overwrite a good file + // if this somehow fails. + var doc = this._serializeToElement(); + + fos.init(file, (MODE_WRONLY | MODE_TRUNCATE), FileUtils.PERMS_FILE, 0); + + try { + var serializer = Cc["@mozilla.org/xmlextras/xmlserializer;1"]. + createInstance(Ci.nsIDOMSerializer); + serializer.serializeToStream(doc.documentElement, fos, null); + } catch (e) { + LOG("_serializeToFile: Error serializing engine:\n" + e); + } + + closeSafeOutputStream(fos); + + Services.obs.notifyObservers(file.clone(), SEARCH_SERVICE_TOPIC, + "write-engine-to-disk-complete"); + }, + + /** + * Remove the engine's file from disk. The search service calls this once it + * removes the engine from its internal store. This function will throw if + * the file cannot be removed. + */ + _remove: function SRCH_ENG_remove() { + if (this._readOnly) + FAIL("Can't remove read only engine!", Cr.NS_ERROR_FAILURE); + if (!this._file || !this._file.exists()) + FAIL("Can't remove engine: file doesn't exist!", Cr.NS_ERROR_FILE_NOT_FOUND); + + this._file.remove(false); + }, + + // nsISearchEngine + get alias() { + if (this._alias === undefined) + this._alias = engineMetadataService.getAttr(this, "alias"); + + return this._alias; + }, + set alias(val) { + this._alias = val; + engineMetadataService.setAttr(this, "alias", val); + notifyAction(this, SEARCH_ENGINE_CHANGED); + }, + + /** + * Return the built-in identifier of app-provided engines. + * + * Note that this identifier is substantially similar to _id, with the + * following exceptions: + * + * * There is no trailing file extension. + * * There is no [app] prefix. + * + * @return a string identifier, or null. + */ + get identifier() { + if (this._identifier !== undefined) { + return this._identifier; + } + + // No identifier if If the engine isn't app-provided + if (!this._isInAppDir && !this._isInJAR) { + return this._identifier = null; + } + + let leaf = this._getLeafName(); + ENSURE_WARN(leaf, "identifier: app-provided engine has no leafName"); + + // Strip file extension. + let ext = leaf.lastIndexOf("."); + if (ext == -1) { + return this._identifier = leaf; + } + return this._identifier = leaf.substring(0, ext); + }, + + get description() { + return this._description; + }, + + get hidden() { + return engineMetadataService.getAttr(this, "hidden") || false; + }, + set hidden(val) { + var value = !!val; + if (value != this.hidden) { + engineMetadataService.setAttr(this, "hidden", value); + notifyAction(this, SEARCH_ENGINE_CHANGED); + } + }, + + get iconURI() { + if (this._iconURI) + return this._iconURI; + return null; + }, + + get _iconURL() { + if (!this._iconURI) + return ""; + return this._iconURI.spec; + }, + + // Where the engine is being loaded from: will return the URI's spec if the + // engine is being downloaded and does not yet have a file. This is only used + // for logging and error messages. + get _location() { + if (this._file) + return this._file.path; + + if (this._uri) + return this._uri.spec; + + return ""; + }, + + /** + * @return the leaf name of the filename or URI of this plugin, + * or null if no file or URI is known. + */ + _getLeafName: function () { + if (this._file) { + return this._file.leafName; + } + if (this._uri && this._uri instanceof Ci.nsIURL) { + return this._uri.fileName; + } + return null; + }, + + // The file that the plugin is loaded from is a unique identifier for it. We + // use this as the identifier to store data in the sqlite database + __id: null, + get _id() { + if (this.__id) { + return this.__id; + } + + let leafName = this._getLeafName(); + + // Treat engines loaded from JARs the same way we treat app shipped + // engines. + // Theoretically, these could also come from extensions, but there's no + // real way for extensions to register their chrome locations at the + // moment, so let's not deal with that case. + // This means we're vulnerable to conflicts if a file loaded from a JAR + // has the same filename as a file loaded from the app dir, but with a + // different engine name. People using the JAR functionality should be + // careful not to do that! + if (this._isInAppDir || this._isInJAR) { + // App dir and JAR engines should always have leafNames + ENSURE_WARN(leafName, "_id: no leafName for appDir or JAR engine", + Cr.NS_ERROR_UNEXPECTED); + return this.__id = "[app]/" + leafName; + } + + if (this._isInProfile) { + ENSURE_WARN(leafName, "_id: no leafName for profile engine", + Cr.NS_ERROR_UNEXPECTED); + return this.__id = "[profile]/" + leafName; + } + + // If the engine isn't a JAR engine, it should have a file. + ENSURE_WARN(this._file, "_id: no _file for non-JAR engine", + Cr.NS_ERROR_UNEXPECTED); + + // We're not in the profile or appdir, so this must be an extension-shipped + // plugin. Use the full filename. + return this.__id = this._file.path; + }, + + // This indicates where we found the .xml file to load the engine, + // and attempts to hide user-identifiable data (such as username). + get _anonymizedLoadPath() { + /* Examples of expected output: + * jar:[app]/omni.ja!browser/engine.xml + * 'browser' here is the name of the chrome package, not a folder. + * [profile]/searchplugins/engine.xml + * [distribution]/searchplugins/common/engine.xml + * [other]/engine.xml + */ + + let leafName = this._getLeafName(); + if (!leafName) + return "null"; + + let prefix = "", suffix = ""; + let file = this._file; + if (!file) { + let uri = this._uri; + if (uri.schemeIs("resource")) { + uri = makeURI(Services.io.getProtocolHandler("resource") + .QueryInterface(Ci.nsISubstitutingProtocolHandler) + .resolveURI(uri)); + } + if (uri.schemeIs("chrome")) { + let packageName = uri.hostPort; + uri = gChromeReg.convertChromeURL(uri); + if (uri instanceof Ci.nsINestedURI) { + prefix = "jar:"; + suffix = "!" + packageName + "/" + leafName; + uri = uri.innermostURI; + } + uri.QueryInterface(Ci.nsIFileURL) + file = uri.file; + } else { + return "[" + uri.scheme + "]/" + leafName; + } + } + + let id; + let enginePath = file.path; + + const NS_XPCOM_CURRENT_PROCESS_DIR = "XCurProcD"; + const NS_APP_USER_PROFILE_50_DIR = "ProfD"; + const XRE_APP_DISTRIBUTION_DIR = "XREAppDist"; + + const knownDirs = { + app: NS_XPCOM_CURRENT_PROCESS_DIR, + profile: NS_APP_USER_PROFILE_50_DIR, + distribution: XRE_APP_DISTRIBUTION_DIR + }; + + for (let key in knownDirs) { + let path; + try { + path = getDir(knownDirs[key]).path; + } catch(e) { + // Getting XRE_APP_DISTRIBUTION_DIR throws during unit tests. + continue; + } + if (enginePath.startsWith(path)) { + id = "[" + key + "]" + enginePath.slice(path.length).replace(/\\/g, "/"); + break; + } + } + + // If the folder doesn't have a known ancestor, don't record its path to + // avoid leaking user identifiable data. + if (!id) + id = "[other]/" + file.leafName; + + return prefix + id + suffix; + }, + + get _installLocation() { + if (this.__installLocation === null) { + if (!this._file) { + ENSURE_WARN(this._uri, "Engines without files must have URIs", + Cr.NS_ERROR_UNEXPECTED); + this.__installLocation = SEARCH_JAR; + } + else if (this._file.parent.equals(getDir(NS_APP_SEARCH_DIR))) + this.__installLocation = SEARCH_APP_DIR; + else if (this._file.parent.equals(getDir(NS_APP_USER_SEARCH_DIR))) + this.__installLocation = SEARCH_PROFILE_DIR; + else + this.__installLocation = SEARCH_IN_EXTENSION; + } + + return this.__installLocation; + }, + + get _isInJAR() { + return this._installLocation == SEARCH_JAR; + }, + get _isInAppDir() { + return this._installLocation == SEARCH_APP_DIR; + }, + get _isInProfile() { + return this._installLocation == SEARCH_PROFILE_DIR; + }, + + get _isDefault() { + // For now, our concept of a "default engine" is "one that is not in the + // user's profile directory", which is currently equivalent to "is app- or + // extension-shipped". + return !this._isInProfile; + }, + + get _hasUpdates() { + // Whether or not the engine has an update URL + let selfURL = this._getURLOfType(URLTYPE_OPENSEARCH, "self"); + return !!(this._updateURL || this._iconUpdateURL || selfURL); + }, + + get name() { + return this._name; + }, + + get searchForm() { + return this._getSearchFormWithPurpose(); + }, + + _getSearchFormWithPurpose(aPurpose = "") { + // First look for a <Url rel="searchform"> + var searchFormURL = this._getURLOfType(URLTYPE_SEARCH_HTML, "searchform"); + if (searchFormURL) { + let submission = searchFormURL.getSubmission("", this, aPurpose); + + // If the rel=searchform URL is not type="get" (i.e. has postData), + // ignore it, since we can only return a URL. + if (!submission.postData) + return submission.uri.spec; + } + + if (!this._searchForm) { + // No SearchForm specified in the engine definition file, use the prePath + // (e.g. https://foo.com for https://foo.com/search.php?q=bar). + var htmlUrl = this._getURLOfType(URLTYPE_SEARCH_HTML); + ENSURE_WARN(htmlUrl, "Engine has no HTML URL!", Cr.NS_ERROR_UNEXPECTED); + this._searchForm = makeURI(htmlUrl.template).prePath; + } + + return ParamSubstitution(this._searchForm, "", this); + }, + + get queryCharset() { + if (this._queryCharset) + return this._queryCharset; + return this._queryCharset = "windows-1252"; // the default + }, + + // from nsISearchEngine + addParam: function SRCH_ENG_addParam(aName, aValue, aResponseType) { + if (!aName || (aValue == null)) + FAIL("missing name or value for nsISearchEngine::addParam!"); + ENSURE_WARN(!this._readOnly, + "called nsISearchEngine::addParam on a read-only engine!", + Cr.NS_ERROR_FAILURE); + if (!aResponseType) + aResponseType = URLTYPE_SEARCH_HTML; + + var url = this._getURLOfType(aResponseType); + if (!url) + FAIL("Engine object has no URL for response type " + aResponseType, + Cr.NS_ERROR_FAILURE); + + url.addParam(aName, aValue); + + // Serialize the changes to file lazily + this.lazySerializeTask.arm(); + }, + +#ifdef ANDROID + get _defaultMobileResponseType() { + let type = URLTYPE_SEARCH_HTML; + + let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2); + let isTablet = sysInfo.get("tablet"); + if (isTablet && this.supportsResponseType("application/x-moz-tabletsearch")) { + // Check for a tablet-specific search URL override + type = "application/x-moz-tabletsearch"; + } else if (!isTablet && this.supportsResponseType("application/x-moz-phonesearch")) { + // Check for a phone-specific search URL override + type = "application/x-moz-phonesearch"; + } + + delete this._defaultMobileResponseType; + return this._defaultMobileResponseType = type; + }, +#endif + + // from nsISearchEngine + getSubmission: function SRCH_ENG_getSubmission(aData, aResponseType, aPurpose) { +#ifdef ANDROID + if (!aResponseType) { + aResponseType = this._defaultMobileResponseType; + } +#endif + if (!aResponseType) { + aResponseType = URLTYPE_SEARCH_HTML; + } + + var url = this._getURLOfType(aResponseType); + + if (!url) + return null; + + if (!aData) { + // Return a dummy submission object with our searchForm attribute + return new Submission(makeURI(this._getSearchFormWithPurpose(aPurpose)), null); + } + + LOG("getSubmission: In data: \"" + aData + "\"; Purpose: \"" + aPurpose + "\""); + var data = ""; + try { + data = gTextToSubURI.ConvertAndEscape(this.queryCharset, aData); + } catch (ex) { + LOG("getSubmission: Falling back to default queryCharset!"); + data = gTextToSubURI.ConvertAndEscape(DEFAULT_QUERY_CHARSET, aData); + } + LOG("getSubmission: Out data: \"" + data + "\""); + return url.getSubmission(data, this, aPurpose); + }, + + // from nsISearchEngine + supportsResponseType: function SRCH_ENG_supportsResponseType(type) { + return (this._getURLOfType(type) != null); + }, + + // from nsISearchEngine + getResultDomain: function SRCH_ENG_getResultDomain(aResponseType) { +#ifdef ANDROID + if (!aResponseType) { + aResponseType = this._defaultMobileResponseType; + } +#endif + if (!aResponseType) { + aResponseType = URLTYPE_SEARCH_HTML; + } + + LOG("getResultDomain: responseType: \"" + aResponseType + "\""); + + let url = this._getURLOfType(aResponseType); + if (url) + return url.resultDomain; + return ""; + }, + + /** + * Returns URL parsing properties used by _buildParseSubmissionMap. + */ + getURLParsingInfo: function () { +#ifdef ANDROID + let responseType = this._defaultMobileResponseType; +#else + let responseType = URLTYPE_SEARCH_HTML; +#endif + + LOG("getURLParsingInfo: responseType: \"" + responseType + "\""); + + let url = this._getURLOfType(responseType); + if (!url || url.method != "GET") { + return null; + } + + let termsParameterName = url._getTermsParameterName(); + if (!termsParameterName) { + return null; + } + + let templateUrl = NetUtil.newURI(url.template).QueryInterface(Ci.nsIURL); + return { + mainDomain: templateUrl.host, + path: templateUrl.filePath.toLowerCase(), + termsParameterName: termsParameterName, + }; + }, + + // nsISupports + QueryInterface: function SRCH_ENG_QI(aIID) { + if (aIID.equals(Ci.nsISearchEngine) || + aIID.equals(Ci.nsISupports)) + return this; + throw Cr.NS_ERROR_NO_INTERFACE; + }, + + get wrappedJSObject() { + return this; + }, + + /** + * Returns a string with the URL to an engine's icon matching both width and + * height. Returns null if icon with specified dimensions is not found. + * + * @param width + * Width of the requested icon. + * @param height + * Height of the requested icon. + */ + getIconURLBySize: function SRCH_ENG_getIconURLBySize(aWidth, aHeight) { + if (!this._iconMapObj) + return null; + + let key = this._getIconKey(aWidth, aHeight); + if (key in this._iconMapObj) { + return this._iconMapObj[key]; + } + return null; + }, + + /** + * Gets an array of all available icons. Each entry is an object with + * width, height and url properties. width and height are numeric and + * represent the icon's dimensions. url is a string with the URL for + * the icon. + */ + getIcons: function SRCH_ENG_getIcons() { + let result = []; + + if (!this._iconMapObj) + return result; + + for (let key of Object.keys(this._iconMapObj)) { + let iconSize = JSON.parse(key); + result.push({ + width: iconSize.width, + height: iconSize.height, + url: this._iconMapObj[key] + }); + } + + return result; + }, + + /** + * Opens a speculative connection to the engine's search URI + * (and suggest URI, if different) to reduce request latency + * + * @param options + * An object that must contain the following fields: + * {window} the content window for the window performing the search + * + * @throws NS_ERROR_INVALID_ARG if options is omitted or lacks required + * elemeents + */ + speculativeConnect: function SRCH_ENG_speculativeConnect(options) { + if (!options || !options.window) { + Cu.reportError("invalid options arg passed to nsISearchEngine.speculativeConnect"); + throw Cr.NS_ERROR_INVALID_ARG; + } + let connector = + Services.io.QueryInterface(Components.interfaces.nsISpeculativeConnect); + + let searchURI = this.getSubmission("dummy").uri; + + let callbacks = options.window.QueryInterface(Components.interfaces.nsIInterfaceRequestor) + .getInterface(Components.interfaces.nsIWebNavigation) + .QueryInterface(Components.interfaces.nsILoadContext); + + connector.speculativeConnect(searchURI, callbacks); + + if (this.supportsResponseType(URLTYPE_SUGGEST_JSON)) { + let suggestURI = this.getSubmission("dummy", URLTYPE_SUGGEST_JSON).uri; + if (suggestURI.prePath != searchURI.prePath) + connector.speculativeConnect(suggestURI, callbacks); + } + }, +}; + +// nsISearchSubmission +function Submission(aURI, aPostData = null) { + this._uri = aURI; + this._postData = aPostData; +} +Submission.prototype = { + get uri() { + return this._uri; + }, + get postData() { + return this._postData; + }, + QueryInterface: function SRCH_SUBM_QI(aIID) { + if (aIID.equals(Ci.nsISearchSubmission) || + aIID.equals(Ci.nsISupports)) + return this; + throw Cr.NS_ERROR_NO_INTERFACE; + } +} + +// nsISearchParseSubmissionResult +function ParseSubmissionResult(aEngine, aTerms, aTermsOffset, aTermsLength) { + this._engine = aEngine; + this._terms = aTerms; + this._termsOffset = aTermsOffset; + this._termsLength = aTermsLength; +} +ParseSubmissionResult.prototype = { + get engine() { + return this._engine; + }, + get terms() { + return this._terms; + }, + get termsOffset() { + return this._termsOffset; + }, + get termsLength() { + return this._termsLength; + }, + QueryInterface: XPCOMUtils.generateQI([Ci.nsISearchParseSubmissionResult]), +} + +const gEmptyParseSubmissionResult = + Object.freeze(new ParseSubmissionResult(null, "", -1, 0)); + +function executeSoon(func) { + Services.tm.mainThread.dispatch(func, Ci.nsIThread.DISPATCH_NORMAL); +} + +/** + * Check for sync initialization has completed or not. + * + * @param {aPromise} A promise. + * + * @returns the value returned by the invoked method. + * @throws NS_ERROR_ALREADY_INITIALIZED if sync initialization has completed. + */ +function checkForSyncCompletion(aPromise) { + return aPromise.then(function(aValue) { + if (gInitialized) { + throw Components.Exception("Synchronous fallback was called and has " + + "finished so no need to pursue asynchronous " + + "initialization", + Cr.NS_ERROR_ALREADY_INITIALIZED); + } + return aValue; + }); +} + +// nsIBrowserSearchService +function SearchService() { + // Replace empty LOG function with the useful one if the log pref is set. + if (Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "log", false)) + LOG = DO_LOG; + + this._initObservers = Promise.defer(); +} + +SearchService.prototype = { + classID: Components.ID("{7319788a-fe93-4db3-9f39-818cf08f4256}"), + + // The current status of initialization. Note that it does not determine if + // initialization is complete, only if an error has been encountered so far. + _initRV: Cr.NS_OK, + + // The boolean indicates that the initialization has started or not. + _initStarted: null, + + // If initialization has not been completed yet, perform synchronous + // initialization. + // Throws in case of initialization error. + _ensureInitialized: function SRCH_SVC__ensureInitialized() { + if (gInitialized) { + if (!Components.isSuccessCode(this._initRV)) { + LOG("_ensureInitialized: failure"); + throw this._initRV; + } + return; + } + + let performanceWarning = + "Search service falling back to synchronous initialization. " + + "This is generally the consequence of an add-on using a deprecated " + + "search service API."; + Deprecated.perfWarning(performanceWarning, "https://developer.mozilla.org/en-US/docs/XPCOM_Interface_Reference/nsIBrowserSearchService#async_warning"); + LOG(performanceWarning); + + engineMetadataService.syncInit(); + this._syncInit(); + if (!Components.isSuccessCode(this._initRV)) { + throw this._initRV; + } + }, + + // Synchronous implementation of the initializer. + // Used by |_ensureInitialized| as a fallback if initialization is not + // complete. + _syncInit: function SRCH_SVC__syncInit() { + LOG("_syncInit start"); + this._initStarted = true; + try { + this._syncLoadEngines(); + } catch (ex) { + this._initRV = Cr.NS_ERROR_FAILURE; + LOG("_syncInit: failure loading engines: " + ex); + } + this._addObservers(); + + gInitialized = true; + + this._initObservers.resolve(this._initRV); + + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, "init-complete"); + + LOG("_syncInit end"); + }, + + /** + * Asynchronous implementation of the initializer. + * + * @returns {Promise} A promise, resolved successfully if the initialization + * succeeds. + */ + _asyncInit: function SRCH_SVC__asyncInit() { + return Task.spawn(function() { + LOG("_asyncInit start"); + try { + yield checkForSyncCompletion(this._asyncLoadEngines()); + } catch (ex if ex.result != Cr.NS_ERROR_ALREADY_INITIALIZED) { + this._initRV = Cr.NS_ERROR_FAILURE; + LOG("_asyncInit: failure loading engines: " + ex); + } + this._addObservers(); + gInitialized = true; + this._initObservers.resolve(this._initRV); + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, "init-complete"); + + LOG("_asyncInit: Completed _asyncInit"); + }.bind(this)); + }, + + + _engines: { }, + __sortedEngines: null, + _visibleDefaultEngines: [], + get _sortedEngines() { + if (!this.__sortedEngines) + return this._buildSortedEngineList(); + return this.__sortedEngines; + }, + + // Get the original Engine object that is the default for this region, + // ignoring changes the user may have subsequently made. + get _originalDefaultEngine() { + let defaultEngine = engineMetadataService.getGlobalAttr("searchDefault"); + if (defaultEngine && + engineMetadataService.getGlobalAttr("searchDefaultHash") != getVerificationHash(defaultEngine)) { + LOG("get _originalDefaultEngine, invalid searchDefaultHash for: " + defaultEngine); + defaultEngine = ""; + } + + if (!defaultEngine) { + let defaultPrefB = Services.prefs.getDefaultBranch(BROWSER_SEARCH_PREF); + let nsIPLS = Ci.nsIPrefLocalizedString; + + try { + defaultEngine = defaultPrefB.getComplexValue("defaultenginename", nsIPLS).data; + } catch (ex) { + // If the default pref is invalid (e.g. an add-on set it to a bogus value) + // getEngineByName will just return null, which is the best we can do. + } + } + + return this.getEngineByName(defaultEngine); + }, + + resetToOriginalDefaultEngine: function SRCH_SVC__resetToOriginalDefaultEngine() { + this.currentEngine = this._originalDefaultEngine; + }, + + _buildCache: function SRCH_SVC__buildCache() { + let cache = {}; + let locale = getLocale(); + let buildID = Services.appinfo.platformBuildID; + + // Allows us to force a cache refresh should the cache format change. + cache.version = CACHE_VERSION; + // We don't want to incur the costs of stat()ing each plugin on every + // startup when the only (supported) time they will change is during + // runtime (where we refresh for changes through the API) and app updates + // (where the buildID is obviously going to change). + // Extension-shipped plugins are the only exception to this, but their + // directories are blown away during updates, so we'll detect their changes. + cache.buildID = buildID; + cache.locale = locale; + + cache.directories = {}; + cache.visibleDefaultEngines = this._visibleDefaultEngines; + + let getParent = engine => { + if (engine._file) + return engine._file.parent; + + let uri = engine._uri; + if (!uri.schemeIs("resource")) { + LOG("getParent: engine URI must be a resource URI if it has no file"); + return null; + } + + // use the underlying JAR file, for resource URIs + let chan = makeChannel(uri.spec); + if (chan) + return this._convertChannelToFile(chan); + + LOG("getParent: couldn't map resource:// URI to a file"); + return null; + }; + + for (let name in this._engines) { + let engine = this._engines[name]; + let parent = getParent(engine); + if (!parent) { + LOG("Error: no parent for engine " + engine._location + ", failing to cache it"); + + continue; + } + + // Write out serialized search engine files when rebuilding cache. + // Do it lazily, to: 1) reuse existing API; 2) make browser interface more responsive + engine._lazySerializeToFile(); + + let cacheKey = parent.path; + if (!cache.directories[cacheKey]) { + let cacheEntry = {}; + cacheEntry.lastModifiedTime = parent.lastModifiedTime; + cacheEntry.engines = []; + cache.directories[cacheKey] = cacheEntry; + } + cache.directories[cacheKey].engines.push(engine); + } + + try { + LOG("_buildCache: Writing to cache file."); + let path = OS.Path.join(OS.Constants.Path.profileDir, "search.json"); + let data = gEncoder.encode(JSON.stringify(cache)); + let promise = OS.File.writeAtomic(path, data, { tmpPath: path + ".tmp"}); + + promise.then( + function onSuccess() { + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, SEARCH_SERVICE_CACHE_WRITTEN); + }, + function onError(e) { + LOG("_buildCache: failure during writeAtomic: " + e); + } + ); + } catch (ex) { + LOG("_buildCache: Could not write to cache file: " + ex); + } + }, + + _syncLoadEngines: function SRCH_SVC__syncLoadEngines() { + LOG("_syncLoadEngines: start"); + // See if we have a cache file so we don't have to parse a bunch of XML. + let cache = {}; + let cacheFile = getDir(NS_APP_USER_PROFILE_50_DIR); + cacheFile.append("search.json"); + if (cacheFile.exists()) + cache = this._readCacheFile(cacheFile); + + let [chromeFiles, chromeURIs] = this._findJAREngines(); + + let distDirs = []; + let locations; + try { + locations = getDir(NS_APP_DISTRIBUTION_SEARCH_DIR_LIST, + Ci.nsISimpleEnumerator); + } catch (e) { + // NS_APP_DISTRIBUTION_SEARCH_DIR_LIST is defined by each app + // so this throws during unit tests (but not xpcshell tests). + locations = {hasMoreElements: () => false}; + } + while (locations.hasMoreElements()) { + let dir = locations.getNext().QueryInterface(Ci.nsIFile); + if (dir.directoryEntries.hasMoreElements()) + distDirs.push(dir); + } + + let otherDirs = []; + locations = getDir(NS_APP_SEARCH_DIR_LIST, Ci.nsISimpleEnumerator); + while (locations.hasMoreElements()) { + let dir = locations.getNext().QueryInterface(Ci.nsIFile); + if (dir.directoryEntries.hasMoreElements()) + otherDirs.push(dir); + } + + let toLoad = chromeFiles.concat(distDirs, otherDirs); + + function modifiedDir(aDir) { + return (!cache.directories || !cache.directories[aDir.path] || + cache.directories[aDir.path].lastModifiedTime != aDir.lastModifiedTime); + } + + function notInCachePath(aPathToLoad) { + return cachePaths.indexOf(aPathToLoad.path) == -1; + } + function notInCacheVisibleEngines(aEngineName) { + return cache.visibleDefaultEngines.indexOf(aEngineName) == -1; + } + + let buildID = Services.appinfo.platformBuildID; + // Gecko44: let cachePaths = [path for (path in cache.directories)]; + let cachePaths = []; + for (path in cache.directories) { + cachePaths.push(path); + } + + + let rebuildCache = !cache.directories || + cache.version != CACHE_VERSION || + cache.locale != getLocale() || + cache.buildID != buildID || + cachePaths.length != toLoad.length || + toLoad.some(notInCachePath) || + cache.visibleDefaultEngines.length != this._visibleDefaultEngines.length || + this._visibleDefaultEngines.some(notInCacheVisibleEngines) || + toLoad.some(modifiedDir); + + if (rebuildCache) { + LOG("_loadEngines: Absent or outdated cache. Loading engines from disk."); + distDirs.forEach(this._loadEnginesFromDir, this); + + this._loadFromChromeURLs(chromeURIs); + + otherDirs.forEach(this._loadEnginesFromDir, this); + + this._buildCache(); + return; + } + + LOG("_loadEngines: loading from cache directories"); + for (let cacheKey in cache.directories) { + let dir = cache.directories[cacheKey]; + this._loadEnginesFromCache(dir); + } + + LOG("_loadEngines: done"); + }, + + /** + * Loads engines asynchronously. + * + * @returns {Promise} A promise, resolved successfully if loading data + * succeeds. + */ + _asyncLoadEngines: function SRCH_SVC__asyncLoadEngines() { + return Task.spawn(function() { + LOG("_asyncLoadEngines: start"); + // See if we have a cache file so we don't have to parse a bunch of XML. + let cache = {}; + let cacheFilePath = OS.Path.join(OS.Constants.Path.profileDir, "search.json"); + cache = yield checkForSyncCompletion(this._asyncReadCacheFile(cacheFilePath)); + + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, "find-jar-engines"); + let [chromeFiles, chromeURIs] = + yield checkForSyncCompletion(this._asyncFindJAREngines()); + + // Get the non-empty distribution directories into distDirs... + let distDirs = []; + let locations; + try { + locations = getDir(NS_APP_DISTRIBUTION_SEARCH_DIR_LIST, + Ci.nsISimpleEnumerator); + } catch (e) { + // NS_APP_DISTRIBUTION_SEARCH_DIR_LIST is defined by each app + // so this throws during unit tests (but not xpcshell tests). + locations = {hasMoreElements: () => false}; + } + while (locations.hasMoreElements()) { + let dir = locations.getNext().QueryInterface(Ci.nsIFile); + let iterator = new OS.File.DirectoryIterator(dir.path, + { winPattern: "*.xml" }); + try { + // Add dir to distDirs if it contains any files. + yield checkForSyncCompletion(iterator.next()); + distDirs.push(dir); + } catch (ex if ex.result != Cr.NS_ERROR_ALREADY_INITIALIZED) { + // Catch for StopIteration exception. + } finally { + iterator.close(); + } + } + + // Add the non-empty directories of NS_APP_SEARCH_DIR_LIST to + // otherDirs... + let otherDirs = []; + locations = getDir(NS_APP_SEARCH_DIR_LIST, Ci.nsISimpleEnumerator); + while (locations.hasMoreElements()) { + let dir = locations.getNext().QueryInterface(Ci.nsIFile); + let iterator = new OS.File.DirectoryIterator(dir.path, + { winPattern: "*.xml" }); + try { + // Add dir to otherDirs if it contains any files. + yield checkForSyncCompletion(iterator.next()); + otherDirs.push(dir); + } catch (ex if ex.result != Cr.NS_ERROR_ALREADY_INITIALIZED) { + // Catch for StopIteration exception. + } finally { + iterator.close(); + } + } + + let toLoad = chromeFiles.concat(distDirs, otherDirs); + function hasModifiedDir(aList) { + return Task.spawn(function() { + let modifiedDir = false; + + for (let dir of aList) { + if (!cache.directories || !cache.directories[dir.path]) { + modifiedDir = true; + break; + } + + let info = yield OS.File.stat(dir.path); + if (cache.directories[dir.path].lastModifiedTime != + info.lastModificationDate.getTime()) { + modifiedDir = true; + break; + } + } + throw new Task.Result(modifiedDir); + }); + } + + function notInCachePath(aPathToLoad) { + return cachePaths.indexOf(aPathToLoad.path) == -1; + } + function notInCacheVisibleEngines(aEngineName) { + return cache.visibleDefaultEngines.indexOf(aEngineName) == -1; + } + + let buildID = Services.appinfo.platformBuildID; + // Gecko44: let cachePaths = [path for (path in cache.directories)]; + let cachePaths = []; + for (path in cache.directories) { + cachePaths.push(path); + } + + let rebuildCache = !cache.directories || + cache.version != CACHE_VERSION || + cache.locale != getLocale() || + cache.buildID != buildID || + cachePaths.length != toLoad.length || + toLoad.some(notInCachePath) || + cache.visibleDefaultEngines.length != this._visibleDefaultEngines.length || + this._visibleDefaultEngines.some(notInCacheVisibleEngines) || + (yield checkForSyncCompletion(hasModifiedDir(toLoad))); + + if (rebuildCache) { + LOG("_asyncLoadEngines: Absent or outdated cache. Loading engines from disk."); + let engines = []; + for (let loadDir of distDirs) { + let enginesFromDir = + yield checkForSyncCompletion(this._asyncLoadEnginesFromDir(loadDir)); + engines = engines.concat(enginesFromDir); + } + let enginesFromURLs = + yield checkForSyncCompletion(this._asyncLoadFromChromeURLs(chromeURIs)); + engines = engines.concat(enginesFromURLs); + for (let loadDir of otherDirs) { + let enginesFromDir = + yield checkForSyncCompletion(this._asyncLoadEnginesFromDir(loadDir)); + engines = engines.concat(enginesFromDir); + } + + for (let engine of engines) { + this._addEngineToStore(engine); + } + this._buildCache(); + return; + } + + LOG("_asyncLoadEngines: loading from cache directories"); + for (let cacheKey in cache.directories) { + let dir = cache.directories[cacheKey]; + this._loadEnginesFromCache(dir); + } + + LOG("_asyncLoadEngines: done"); + }.bind(this)); + }, + + _asyncReInit: function () { + LOG("_asyncReInit"); + // Start by clearing the initialized state, so we don't abort early. + gInitialized = false; + + // Clear the engines, too, so we don't stick with the stale ones. + this._engines = {}; + this.__sortedEngines = null; + this._currentEngine = null; + this._defaultEngine = null; + this._visibleDefaultEngines = []; + + // Clear the metadata service. + engineMetadataService._initialized = false; + engineMetadataService._initializer = null; + + Task.spawn(function* () { + try { + LOG("Restarting engineMetadataService"); + yield engineMetadataService.init(); + yield this._asyncLoadEngines(); + + // Typically we'll re-init as a result of a pref observer, + // so signal to 'callers' that we're done. + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, "reinit-complete"); + gInitialized = true; + } catch (err) { + LOG("Reinit failed: " + err); + Services.obs.notifyObservers(null, SEARCH_SERVICE_TOPIC, "reinit-failed"); + } + }.bind(this)); + }, + + _readCacheFile: function SRCH_SVC__readCacheFile(aFile) { + let stream = Cc["@mozilla.org/network/file-input-stream;1"]. + createInstance(Ci.nsIFileInputStream); + let json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON); + + try { + stream.init(aFile, MODE_RDONLY, FileUtils.PERMS_FILE, 0); + return json.decodeFromStream(stream, stream.available()); + } catch (ex) { + LOG("_readCacheFile: Error reading cache file: " + ex); + } finally { + stream.close(); + } + return false; + }, + + /** + * Read from a given cache file asynchronously. + * + * @param aPath the file path. + * + * @returns {Promise} A promise, resolved successfully if retrieveing data + * succeeds. + */ + _asyncReadCacheFile: function SRCH_SVC__asyncReadCacheFile(aPath) { + return Task.spawn(function() { + let json; + try { + let bytes = yield OS.File.read(aPath); + json = JSON.parse(new TextDecoder().decode(bytes)); + } catch (ex) { + LOG("_asyncReadCacheFile: Error reading cache file: " + ex); + json = {}; + } + throw new Task.Result(json); + }); + }, + + _batchTask: null, + get batchTask() { + if (!this._batchTask) { + let task = function taskCallback() { + LOG("batchTask: Invalidating engine cache"); + this._buildCache(); + }.bind(this); + this._batchTask = new DeferredTask(task, CACHE_INVALIDATION_DELAY); + } + return this._batchTask; + }, + + _addEngineToStore: function SRCH_SVC_addEngineToStore(aEngine) { + LOG("_addEngineToStore: Adding engine: \"" + aEngine.name + "\""); + + // See if there is an existing engine with the same name. However, if this + // engine is updating another engine, it's allowed to have the same name. + var hasSameNameAsUpdate = (aEngine._engineToUpdate && + aEngine.name == aEngine._engineToUpdate.name); + if (aEngine.name in this._engines && !hasSameNameAsUpdate) { + LOG("_addEngineToStore: Duplicate engine found, aborting!"); + return; + } + + if (aEngine._engineToUpdate) { + // We need to replace engineToUpdate with the engine that just loaded. + var oldEngine = aEngine._engineToUpdate; + + // Remove the old engine from the hash, since it's keyed by name, and our + // name might change (the update might have a new name). + delete this._engines[oldEngine.name]; + + // Hack: we want to replace the old engine with the new one, but since + // people may be holding refs to the nsISearchEngine objects themselves, + // we'll just copy over all "private" properties (those without a getter + // or setter) from one object to the other. + for (var p in aEngine) { + if (!(aEngine.__lookupGetter__(p) || aEngine.__lookupSetter__(p))) + oldEngine[p] = aEngine[p]; + } + aEngine = oldEngine; + aEngine._engineToUpdate = null; + + // Add the engine back + this._engines[aEngine.name] = aEngine; + notifyAction(aEngine, SEARCH_ENGINE_CHANGED); + } else { + // Not an update, just add the new engine. + this._engines[aEngine.name] = aEngine; + // Only add the engine to the list of sorted engines if the initial list + // has already been built (i.e. if this.__sortedEngines is non-null). If + // it hasn't, we're loading engines from disk and the sorted engine list + // will be built once we need it. + if (this.__sortedEngines) { + this.__sortedEngines.push(aEngine); + this._saveSortedEngineList(); + } + notifyAction(aEngine, SEARCH_ENGINE_ADDED); + } + + if (aEngine._hasUpdates) { + // Schedule the engine's next update, if it isn't already. + if (!engineMetadataService.getAttr(aEngine, "updateexpir")) + engineUpdateService.scheduleNextUpdate(aEngine); + } + }, + + _loadEnginesFromCache: function SRCH_SVC__loadEnginesFromCache(aDir) { + let engines = aDir.engines; + LOG("_loadEnginesFromCache: Loading from cache. " + engines.length + " engines to load."); + for (let i = 0; i < engines.length; i++) { + let json = engines[i]; + + try { + let engine; + if (json.filePath) + engine = new Engine({type: "filePath", value: json.filePath}, + json._readOnly); + else if (json._url) + engine = new Engine({type: "uri", value: json._url}, json._readOnly); + + engine._initWithJSON(json); + this._addEngineToStore(engine); + } catch (ex) { + LOG("Failed to load " + engines[i]._name + " from cache: " + ex); + LOG("Engine JSON: " + engines[i].toSource()); + } + } + }, + + _loadEnginesFromDir: function SRCH_SVC__loadEnginesFromDir(aDir) { + LOG("_loadEnginesFromDir: Searching in " + aDir.path + " for search engines."); + + // Check whether aDir is the user profile dir + var isInProfile = aDir.equals(getDir(NS_APP_USER_SEARCH_DIR)); + + var files = aDir.directoryEntries + .QueryInterface(Ci.nsIDirectoryEnumerator); + + while (files.hasMoreElements()) { + var file = files.nextFile; + + // Ignore hidden and empty files, and directories + if (!file.isFile() || file.fileSize == 0 || file.isHidden()) + continue; + + var fileURL = NetUtil.ioService.newFileURI(file).QueryInterface(Ci.nsIURL); + var fileExtension = fileURL.fileExtension.toLowerCase(); + var isWritable = isInProfile && file.isWritable(); + + if (fileExtension != "xml") { + // Not an engine + continue; + } + + var addedEngine = null; + try { + addedEngine = new Engine(file, !isWritable); + addedEngine._initFromFile(); + } catch (ex) { + LOG("_loadEnginesFromDir: Failed to load " + file.path + "!\n" + ex); + continue; + } + + this._addEngineToStore(addedEngine); + } + }, + + /** + * Loads engines from a given directory asynchronously. + * + * @param aDir the directory. + * + * @returns {Promise} A promise, resolved successfully if retrieveing data + * succeeds. + */ + _asyncLoadEnginesFromDir: function SRCH_SVC__asyncLoadEnginesFromDir(aDir) { + LOG("_asyncLoadEnginesFromDir: Searching in " + aDir.path + " for search engines."); + + // Check whether aDir is the user profile dir + let isInProfile = aDir.equals(getDir(NS_APP_USER_SEARCH_DIR)); + let iterator = new OS.File.DirectoryIterator(aDir.path); + return Task.spawn(function() { + let osfiles = yield iterator.nextBatch(); + iterator.close(); + + let engines = []; + for (let osfile of osfiles) { + if (osfile.isDir || osfile.isSymLink) + continue; + + let fileInfo = yield OS.File.stat(osfile.path); + if (fileInfo.size == 0) + continue; + + let parts = osfile.path.split("."); + if (parts.length <= 1 || (parts.pop()).toLowerCase() != "xml") { + // Not an engine + continue; + } + + let addedEngine = null; + try { + let file = new FileUtils.File(osfile.path); + let isWritable = isInProfile; + addedEngine = new Engine(file, !isWritable); + yield checkForSyncCompletion(addedEngine._asyncInitFromFile()); + } catch (ex if ex.result != Cr.NS_ERROR_ALREADY_INITIALIZED) { + LOG("_asyncLoadEnginesFromDir: Failed to load " + osfile.path + "!\n" + ex); + continue; + } + engines.push(addedEngine); + } + throw new Task.Result(engines); + }.bind(this)); + }, + + _loadFromChromeURLs: function SRCH_SVC_loadFromChromeURLs(aURLs) { + aURLs.forEach(function (url) { + try { + LOG("_loadFromChromeURLs: loading engine from chrome url: " + url); + + let engine = new Engine(makeURI(url), true); + + engine._initFromURISync(); + + this._addEngineToStore(engine); + } catch (ex) { + LOG("_loadFromChromeURLs: failed to load engine: " + ex); + } + }, this); + }, + + /** + * Loads engines from Chrome URLs asynchronously. + * + * @param aURLs a list of URLs. + * + * @returns {Promise} A promise, resolved successfully if loading data + * succeeds. + */ + _asyncLoadFromChromeURLs: function SRCH_SVC__asyncLoadFromChromeURLs(aURLs) { + return Task.spawn(function() { + let engines = []; + for (let url of aURLs) { + try { + LOG("_asyncLoadFromChromeURLs: loading engine from chrome url: " + url); + let engine = new Engine(NetUtil.newURI(url), true); + yield checkForSyncCompletion(engine._asyncInitFromURI()); + engines.push(engine); + } catch (ex if ex.result != Cr.NS_ERROR_ALREADY_INITIALIZED) { + LOG("_asyncLoadFromChromeURLs: failed to load engine: " + ex); + } + } + throw new Task.Result(engines); + }.bind(this)); + }, + + _convertChannelToFile: function(chan) { + let fileURI = chan.URI; + while (fileURI instanceof Ci.nsIJARURI) + fileURI = fileURI.JARFile; + fileURI.QueryInterface(Ci.nsIFileURL); + + return fileURI.file; + }, + + _findJAREngines: function SRCH_SVC_findJAREngines() { + LOG("_findJAREngines: looking for engines in JARs") + + let chan = makeChannel(APP_SEARCH_PREFIX + "list.txt"); + if (!chan) { + LOG("_findJAREngines: " + APP_SEARCH_PREFIX + " isn't registered"); + return [[], []]; + } + + let uris = []; + let chromeFiles = []; + + // Find the underlying JAR file (_loadEngines uses it to determine + // whether it needs to invalidate the cache) + let jarPackaging = false; + if (chan.URI instanceof Ci.nsIJARURI) { + chromeFiles.push(this._convertChannelToFile(chan)); + jarPackaging = true; + } + + let sis = Cc["@mozilla.org/scriptableinputstream;1"]. + createInstance(Ci.nsIScriptableInputStream); + sis.init(chan.open()); + this._parseListTxt(sis.read(sis.available()), jarPackaging, + chromeFiles, uris); + return [chromeFiles, uris]; + }, + + /** + * Loads jar engines asynchronously. + * + * @returns {Promise} A promise, resolved successfully if finding jar engines + * succeeds. + */ + _asyncFindJAREngines: function SRCH_SVC__asyncFindJAREngines() { + return Task.spawn(function() { + LOG("_asyncFindJAREngines: looking for engines in JARs") + + let listURL = APP_SEARCH_PREFIX + "list.txt"; + let chan = makeChannel(listURL); + if (!chan) { + LOG("_asyncFindJAREngines: " + APP_SEARCH_PREFIX + " isn't registered"); + throw new Task.Result([[], []]); + } + + let uris = []; + let chromeFiles = []; + + // Find the underlying JAR file (_loadEngines uses it to determine + // whether it needs to invalidate the cache) + let jarPackaging = false; + if (chan.URI instanceof Ci.nsIJARURI) { + chromeFiles.push(this._convertChannelToFile(chan)); + jarPackaging = true; + } + + // Read list.txt to find the engines we need to load. + let deferred = Promise.defer(); + let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]. + createInstance(Ci.nsIXMLHttpRequest); + request.overrideMimeType("text/plain"); + request.onload = function(aEvent) { + deferred.resolve(aEvent.target.responseText); + }; + request.onerror = function(aEvent) { + LOG("_asyncFindJAREngines: failed to read " + listURL); + deferred.resolve(""); + }; + request.open("GET", NetUtil.newURI(listURL).spec, true); + request.send(); + let list = yield deferred.promise; + + this._parseListTxt(list, jarPackaging, chromeFiles, uris); + throw new Task.Result([chromeFiles, uris]); + }.bind(this)); + }, + + _parseListTxt: function SRCH_SVC_parseListTxt(list, jarPackaging, + chromeFiles, uris) { + let names = list.split("\n").filter(n => !!n); + // This maps the names of our built-in engines to a boolean + // indicating whether it should be hidden by default. + let jarNames = new Map(); + for (let name of names) { + if (name.endsWith(":hidden")) { + name = name.split(":")[0]; + jarNames.set(name, true); + } else { + jarNames.set(name, false); + } + } + + // Check if we have a useable country specific list of visible default engines. + let engineNames; + let visibleDefaultEngines = + engineMetadataService.getGlobalAttr("visibleDefaultEngines"); + if (visibleDefaultEngines && + engineMetadataService.getGlobalAttr("visibleDefaultEnginesHash") == getVerificationHash(visibleDefaultEngines)) { + engineNames = visibleDefaultEngines.split(","); + + for (let engineName of engineNames) { + // If all engineName values are part of jarNames, + // then we can use the country specific list, otherwise ignore it. + // The visibleDefaultEngines string containing the name of an engine we + // don't ship indicates the server is misconfigured to answer requests + // from the specific Firefox version we are running, so ignoring the + // value altogether is safer. + if (!jarNames.has(engineName)) { + LOG("_parseListTxt: ignoring visibleDefaultEngines value because " + + engineName + " is not in the jar engines we have found"); + engineNames = null; + break; + } + } + } + + // Fallback to building a list based on the :hidden suffixes found in list.txt. + if (!engineNames) { + engineNames = []; + for (let [name, hidden] of jarNames) { + if (!hidden) + engineNames.push(name); + } + } + + for (let name of engineNames) { + let uri = APP_SEARCH_PREFIX + name + ".xml"; + uris.push(uri); + if (!jarPackaging) { + // Flat packaging requires that _loadEngines checks the modification + // time of each engine file. + let chan = makeChannel(uri); + if (chan) + chromeFiles.push(this._convertChannelToFile(chan)); + else + LOG("_findJAREngines: couldn't resolve " + uri); + } + } + + // Store this so that it can be used while writing the cache file. + this._visibleDefaultEngines = engineNames; + }, + + + _saveSortedEngineList: function SRCH_SVC_saveSortedEngineList() { + LOG("SRCH_SVC_saveSortedEngineList: starting"); + + // Set the useDB pref to indicate that from now on we should use the order + // information stored in the database. + Services.prefs.setBoolPref(BROWSER_SEARCH_PREF + "useDBForOrder", true); + + var engines = this._getSortedEngines(true); + + let instructions = []; + for (var i = 0; i < engines.length; ++i) { + instructions.push( + {key: "order", + value: i+1, + engine: engines[i] + }); + } + + engineMetadataService.setAttrs(instructions); + LOG("SRCH_SVC_saveSortedEngineList: done"); + }, + + _buildSortedEngineList: function SRCH_SVC_buildSortedEngineList() { + LOG("_buildSortedEngineList: building list"); + var addedEngines = { }; + this.__sortedEngines = []; + var engine; + + // If the user has specified a custom engine order, read the order + // information from the engineMetadataService instead of the default + // prefs. + if (Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "useDBForOrder", false)) { + LOG("_buildSortedEngineList: using db for order"); + + // Flag to keep track of whether or not we need to call _saveSortedEngineList. + let needToSaveEngineList = false; + + for (let name in this._engines) { + let engine = this._engines[name]; + var orderNumber = engineMetadataService.getAttr(engine, "order"); + + // Since the DB isn't regularly cleared, and engine files may disappear + // without us knowing, we may already have an engine in this slot. If + // that happens, we just skip it - it will be added later on as an + // unsorted engine. + if (orderNumber && !this.__sortedEngines[orderNumber-1]) { + this.__sortedEngines[orderNumber-1] = engine; + addedEngines[engine.name] = engine; + } else { + // We need to call _saveSortedEngineList so this gets sorted out. + needToSaveEngineList = true; + } + } + + // Filter out any nulls for engines that may have been removed + var filteredEngines = this.__sortedEngines.filter(function(a) { return !!a; }); + if (this.__sortedEngines.length != filteredEngines.length) + needToSaveEngineList = true; + this.__sortedEngines = filteredEngines; + + if (needToSaveEngineList) + this._saveSortedEngineList(); + } else { + // The DB isn't being used, so just read the engine order from the prefs + var i = 0; + var engineName; + var prefName; + + try { + var extras = + Services.prefs.getChildList(BROWSER_SEARCH_PREF + "order.extra."); + + for (prefName of extras) { + engineName = Services.prefs.getCharPref(prefName); + + engine = this._engines[engineName]; + if (!engine || engine.name in addedEngines) + continue; + + this.__sortedEngines.push(engine); + addedEngines[engine.name] = engine; + } + } + catch (e) { } + + while (true) { + engineName = getLocalizedPref(BROWSER_SEARCH_PREF + "order." + (++i)); + if (!engineName) + break; + + engine = this._engines[engineName]; + if (!engine || engine.name in addedEngines) + continue; + + this.__sortedEngines.push(engine); + addedEngines[engine.name] = engine; + } + } + + // Array for the remaining engines, alphabetically sorted. + let alphaEngines = []; + + for (let name in this._engines) { + let engine = this._engines[name]; + if (!(engine.name in addedEngines)) + alphaEngines.push(this._engines[engine.name]); + } + + let locale = Cc["@mozilla.org/intl/nslocaleservice;1"] + .getService(Ci.nsILocaleService) + .newLocale(getLocale()); + let collation = Cc["@mozilla.org/intl/collation-factory;1"] + .createInstance(Ci.nsICollationFactory) + .CreateCollation(locale); + const strength = Ci.nsICollation.kCollationCaseInsensitiveAscii; + let comparator = (a, b) => collation.compareString(strength, a.name, b.name); + alphaEngines.sort(comparator); + return this.__sortedEngines = this.__sortedEngines.concat(alphaEngines); + }, + + /** + * Get a sorted array of engines. + * @param aWithHidden + * True if hidden plugins should be included in the result. + */ + _getSortedEngines: function SRCH_SVC_getSorted(aWithHidden) { + if (aWithHidden) + return this._sortedEngines; + + return this._sortedEngines.filter(function (engine) { + return !engine.hidden; + }); + }, + + // nsIBrowserSearchService + init: function SRCH_SVC_init(observer) { + LOG("SearchService.init"); + let self = this; + if (!this._initStarted) { + this._initStarted = true; + Task.spawn(function task() { + try { + yield checkForSyncCompletion(engineMetadataService.init()); + // Complete initialization by calling asynchronous initializer. + yield self._asyncInit(); + } catch (ex if ex.result == Cr.NS_ERROR_ALREADY_INITIALIZED) { + // No need to pursue asynchronous because synchronous fallback was + // called and has finished. + } catch (ex) { + self._initObservers.reject(ex); + } + }); + } + if (observer) { + this._initObservers.promise.then( + function onSuccess() { + try { + observer.onInitComplete(self._initRV); + } catch (e) { + Cu.reportError(e); + } + }, + function onError(aReason) { + Cu.reportError("Internal error while initializing SearchService: " + aReason); + observer.onInitComplete(Components.results.NS_ERROR_UNEXPECTED); + } + ); + } + }, + + get isInitialized() { + return gInitialized; + }, + + getEngines: function SRCH_SVC_getEngines(aCount) { + this._ensureInitialized(); + LOG("getEngines: getting all engines"); + var engines = this._getSortedEngines(true); + aCount.value = engines.length; + return engines; + }, + + getVisibleEngines: function SRCH_SVC_getVisible(aCount) { + this._ensureInitialized(); + LOG("getVisibleEngines: getting all visible engines"); + var engines = this._getSortedEngines(false); + aCount.value = engines.length; + return engines; + }, + + getDefaultEngines: function SRCH_SVC_getDefault(aCount) { + this._ensureInitialized(); + function isDefault(engine) { + return engine._isDefault; + }; + var engines = this._sortedEngines.filter(isDefault); + var engineOrder = {}; + var engineName; + var i = 1; + + // Build a list of engines which we have ordering information for. + // We're rebuilding the list here because _sortedEngines contain the + // current order, but we want the original order. + + // First, look at the "browser.search.order.extra" branch. + try { + var extras = Services.prefs.getChildList(BROWSER_SEARCH_PREF + "order.extra."); + + for (var prefName of extras) { + engineName = Services.prefs.getCharPref(prefName); + + if (!(engineName in engineOrder)) + engineOrder[engineName] = i++; + } + } catch (e) { + LOG("Getting extra order prefs failed: " + e); + } + + // Now look through the "browser.search.order" branch. + for (var j = 1; ; j++) { + engineName = getLocalizedPref(BROWSER_SEARCH_PREF + "order." + j); + if (!engineName) + break; + + if (!(engineName in engineOrder)) + engineOrder[engineName] = i++; + } + + LOG("getDefaultEngines: engineOrder: " + engineOrder.toSource()); + + function compareEngines (a, b) { + var aIdx = engineOrder[a.name]; + var bIdx = engineOrder[b.name]; + + if (aIdx && bIdx) + return aIdx - bIdx; + if (aIdx) + return -1; + if (bIdx) + return 1; + + return a.name.localeCompare(b.name); + } + engines.sort(compareEngines); + + aCount.value = engines.length; + return engines; + }, + + getEngineByName: function SRCH_SVC_getEngineByName(aEngineName) { + this._ensureInitialized(); + return this._engines[aEngineName] || null; + }, + + getEngineByAlias: function SRCH_SVC_getEngineByAlias(aAlias) { + this._ensureInitialized(); + for (var engineName in this._engines) { + var engine = this._engines[engineName]; + if (engine && engine.alias == aAlias) + return engine; + } + return null; + }, + + addEngineWithDetails: function SRCH_SVC_addEWD(aName, aIconURL, aAlias, + aDescription, aMethod, + aTemplate, aExtensionID) { + this._ensureInitialized(); + if (!aName) + FAIL("Invalid name passed to addEngineWithDetails!"); + if (!aMethod) + FAIL("Invalid method passed to addEngineWithDetails!"); + if (!aTemplate) + FAIL("Invalid template passed to addEngineWithDetails!"); + if (this._engines[aName]) + FAIL("An engine with that name already exists!", Cr.NS_ERROR_FILE_ALREADY_EXISTS); + + var engine = new Engine(getSanitizedFile(aName), false); + engine._initFromMetadata(aName, aIconURL, aAlias, aDescription, + aMethod, aTemplate, aExtensionID); + this._addEngineToStore(engine); + }, + + addEngine: function SRCH_SVC_addEngine(aEngineURL, aDataType, aIconURL, + aConfirm, aCallback) { + LOG("addEngine: Adding \"" + aEngineURL + "\"."); + this._ensureInitialized(); + try { + var uri = makeURI(aEngineURL); + var engine = new Engine(uri, false); + if (aCallback) { + engine._installCallback = function (errorCode) { + try { + if (errorCode == null) + aCallback.onSuccess(engine); + else + aCallback.onError(errorCode); + } catch (ex) { + Cu.reportError("Error invoking addEngine install callback: " + ex); + } + // Clear the reference to the callback now that it's been invoked. + engine._installCallback = null; + }; + } + engine._initFromURIAndLoad(); + } catch (ex) { + // Drop the reference to the callback, if set + if (engine) + engine._installCallback = null; + FAIL("addEngine: Error adding engine:\n" + ex, Cr.NS_ERROR_FAILURE); + } + engine._setIcon(aIconURL, false); + engine._confirm = aConfirm; + }, + + removeEngine: function SRCH_SVC_removeEngine(aEngine) { + this._ensureInitialized(); + if (!aEngine) + FAIL("no engine passed to removeEngine!"); + + var engineToRemove = null; + for (var e in this._engines) { + if (aEngine.wrappedJSObject == this._engines[e]) + engineToRemove = this._engines[e]; + } + + if (!engineToRemove) + FAIL("removeEngine: Can't find engine to remove!", Cr.NS_ERROR_FILE_NOT_FOUND); + + if (engineToRemove == this.currentEngine) { + this._currentEngine = null; + } + + if (engineToRemove == this.defaultEngine) { + this._defaultEngine = null; + } + + if (engineToRemove._readOnly) { + // Just hide it (the "hidden" setter will notify) and remove its alias to + // avoid future conflicts with other engines. + engineToRemove.hidden = true; + engineToRemove.alias = null; + } else { + // Cancel the serialized task if it's pending. Since the task is a + // synchronous function, we don't need to wait on the "finalize" method. + if (engineToRemove._lazySerializeTask) { + engineToRemove._lazySerializeTask.disarm(); + engineToRemove._lazySerializeTask = null; + } + + // Remove the engine file from disk (this might throw) + engineToRemove._remove(); + engineToRemove._file = null; + + // Remove the engine from _sortedEngines + var index = this._sortedEngines.indexOf(engineToRemove); + if (index == -1) + FAIL("Can't find engine to remove in _sortedEngines!", Cr.NS_ERROR_FAILURE); + this.__sortedEngines.splice(index, 1); + + // Remove the engine from the internal store + delete this._engines[engineToRemove.name]; + + notifyAction(engineToRemove, SEARCH_ENGINE_REMOVED); + + // Since we removed an engine, we need to update the preferences. + this._saveSortedEngineList(); + } + }, + + moveEngine: function SRCH_SVC_moveEngine(aEngine, aNewIndex) { + this._ensureInitialized(); + if ((aNewIndex > this._sortedEngines.length) || (aNewIndex < 0)) + FAIL("SRCH_SVC_moveEngine: Index out of bounds!"); + if (!(aEngine instanceof Ci.nsISearchEngine)) + FAIL("SRCH_SVC_moveEngine: Invalid engine passed to moveEngine!"); + if (aEngine.hidden) + FAIL("moveEngine: Can't move a hidden engine!", Cr.NS_ERROR_FAILURE); + + var engine = aEngine.wrappedJSObject; + + var currentIndex = this._sortedEngines.indexOf(engine); + if (currentIndex == -1) + FAIL("moveEngine: Can't find engine to move!", Cr.NS_ERROR_UNEXPECTED); + + // Our callers only take into account non-hidden engines when calculating + // aNewIndex, but we need to move it in the array of all engines, so we + // need to adjust aNewIndex accordingly. To do this, we count the number + // of hidden engines in the list before the engine that we're taking the + // place of. We do this by first finding newIndexEngine (the engine that + // we were supposed to replace) and then iterating through the complete + // engine list until we reach it, increasing aNewIndex for each hidden + // engine we find on our way there. + // + // This could be further simplified by having our caller pass in + // newIndexEngine directly instead of aNewIndex. + var newIndexEngine = this._getSortedEngines(false)[aNewIndex]; + if (!newIndexEngine) + FAIL("moveEngine: Can't find engine to replace!", Cr.NS_ERROR_UNEXPECTED); + + for (var i = 0; i < this._sortedEngines.length; ++i) { + if (newIndexEngine == this._sortedEngines[i]) + break; + if (this._sortedEngines[i].hidden) + aNewIndex++; + } + + if (currentIndex == aNewIndex) + return; // nothing to do! + + // Move the engine + var movedEngine = this.__sortedEngines.splice(currentIndex, 1)[0]; + this.__sortedEngines.splice(aNewIndex, 0, movedEngine); + + notifyAction(engine, SEARCH_ENGINE_CHANGED); + + // Since we moved an engine, we need to update the preferences. + this._saveSortedEngineList(); + }, + + restoreDefaultEngines: function SRCH_SVC_resetDefaultEngines() { + this._ensureInitialized(); + for (let name in this._engines) { + let e = this._engines[name]; + // Unhide all default engines + if (e.hidden && e._isDefault) + e.hidden = false; + } + }, + + get defaultEngine() { + this._ensureInitialized(); + if (!this._defaultEngine) { + let defaultEngine = this.getEngineByName(getLocalizedPref(BROWSER_SEARCH_PREF + "defaultenginename", "")) + if (!defaultEngine) + defaultEngine = this._getSortedEngines(false)[0] || null; + this._defaultEngine = defaultEngine; + } + if (this._defaultEngine.hidden) + return this._getSortedEngines(false)[0]; + return this._defaultEngine; + }, + + set defaultEngine(val) { + this._ensureInitialized(); + // Sometimes we get wrapped nsISearchEngine objects (external XPCOM callers), + // and sometimes we get raw Engine JS objects (callers in this file), so + // handle both. + if (!(val instanceof Ci.nsISearchEngine) && !(val instanceof Engine)) + FAIL("Invalid argument passed to defaultEngine setter"); + + let newDefaultEngine = this.getEngineByName(val.name); + if (!newDefaultEngine) + FAIL("Can't find engine in store!", Cr.NS_ERROR_UNEXPECTED); + + if (newDefaultEngine == this._defaultEngine) + return; + + this._defaultEngine = newDefaultEngine; + + // If we change the default engine in the future, that change should impact + // users who have switched away from and then back to the build's "default" + // engine. So clear the user pref when the defaultEngine is set to the + // build's default engine, so that the defaultEngine getter falls back to + // whatever the default is. + if (this._defaultEngine == this._originalDefaultEngine) { + Services.prefs.clearUserPref(BROWSER_SEARCH_PREF + "defaultenginename"); + } + else { + setLocalizedPref(BROWSER_SEARCH_PREF + "defaultenginename", this._defaultEngine.name); + } + + notifyAction(this._defaultEngine, SEARCH_ENGINE_DEFAULT); + }, + + get currentEngine() { + this._ensureInitialized(); + if (!this._currentEngine) { + let name = engineMetadataService.getGlobalAttr("current"); + if (engineMetadataService.getGlobalAttr("hash") == getVerificationHash(name)) { + this._currentEngine = this.getEngineByName(name); + } + } + + if (!this._currentEngine || this._currentEngine.hidden) + this._currentEngine = this._originalDefaultEngine; + if (!this._currentEngine || this._currentEngine.hidden) + this._currentEngine = this._getSortedEngines(false)[0]; + + if (!this._currentEngine) { + // Last resort fallback: unhide the original default engine. + this._currentEngine = this._originalDefaultEngine; + if (this._currentEngine) + this._currentEngine.hidden = false; + } + + return this._currentEngine; + }, + + set currentEngine(val) { + this._ensureInitialized(); + // Sometimes we get wrapped nsISearchEngine objects (external XPCOM callers), + // and sometimes we get raw Engine JS objects (callers in this file), so + // handle both. + if (!(val instanceof Ci.nsISearchEngine) && !(val instanceof Engine)) + FAIL("Invalid argument passed to currentEngine setter"); + + var newCurrentEngine = this.getEngineByName(val.name); + if (!newCurrentEngine) + FAIL("Can't find engine in store!", Cr.NS_ERROR_UNEXPECTED); + + if (newCurrentEngine == this._currentEngine) + return; + + this._currentEngine = newCurrentEngine; + + // If we change the default engine in the future, that change should impact + // users who have switched away from and then back to the build's "default" + // engine. So clear the user pref when the currentEngine is set to the + // build's default engine, so that the currentEngine getter falls back to + // whatever the default is. + let newName = this._currentEngine.name; + if (this._currentEngine == this._originalDefaultEngine) { + newName = ""; + } + + engineMetadataService.setGlobalAttr("current", newName); + engineMetadataService.setGlobalAttr("hash", getVerificationHash(newName)); + + notifyAction(this._currentEngine, SEARCH_ENGINE_CURRENT); + }, + + getDefaultEngineInfo() { + let result = {}; + + let engine; + try { + engine = this.defaultEngine; + } catch(e) { + // The defaultEngine getter will throw if there's no engine at all, + // which shouldn't happen unless an add-on or a test deleted all of them. + // Our preferences UI doesn't let users do that. + Cu.reportError("getDefaultEngineInfo: No default engine"); + } + + if (!engine) { + result.name = "NONE"; + } else { + if (engine.name) + result.name = engine.name; + + result.loadPath = engine._anonymizedLoadPath; + + // For privacy, we only collect the submission URL for engines + // from the application or distribution folder... + let sendSubmissionURL = + /^(?:jar:)?(?:\[app\]|\[distribution\])/.test(result.loadPath); + + // ... or engines sorted by default near the top of the list. + if (!sendSubmissionURL) { + let extras = + Services.prefs.getChildList(BROWSER_SEARCH_PREF + "order.extra."); + + for (let prefName of extras) { + try { + if (result.name == Services.prefs.getCharPref(prefName)) { + sendSubmissionURL = true; + break; + } + } catch(e) {} + } + + let i = 0; + while (!sendSubmissionURL) { + let engineName = getLocalizedPref(BROWSER_SEARCH_PREF + "order." + (++i)); + if (!engineName) + break; + if (result.name == engineName) { + sendSubmissionURL = true; + break; + } + } + } + + if (sendSubmissionURL) { + let uri = engine._getURLOfType("text/html") + .getSubmission("", engine, "searchbar").uri; + uri.userPass = ""; // Avoid reporting a username or password. + result.submissionURL = uri.spec; + } + } + + return result; + }, + + /** + * This map is built lazily after the available search engines change. It + * allows quick parsing of an URL representing a search submission into the + * search engine name and original terms. + * + * The keys are strings containing the domain name and lowercase path of the + * engine submission, for example "www.google.com/search". + * + * The values are objects with these properties: + * { + * engine: The associated nsISearchEngine. + * termsParameterName: Name of the URL parameter containing the search + * terms, for example "q". + * } + */ + _parseSubmissionMap: null, + + _buildParseSubmissionMap: function SRCH_SVC__buildParseSubmissionMap() { + LOG("_buildParseSubmissionMap"); + this._parseSubmissionMap = new Map(); + + // Used only while building the map, indicates which entries do not refer to + // the main domain of the engine but to an alternate domain, for example + // "www.google.fr" for the "www.google.com" search engine. + let keysOfAlternates = new Set(); + + for (let engine of this._sortedEngines) { + LOG("Processing engine: " + engine.name); + + if (engine.hidden) { + LOG("Engine is hidden."); + continue; + } + + let urlParsingInfo = engine.getURLParsingInfo(); + if (!urlParsingInfo) { + LOG("Engine does not support URL parsing."); + continue; + } + + // Store the same object on each matching map key, as an optimization. + let mapValueForEngine = { + engine: engine, + termsParameterName: urlParsingInfo.termsParameterName, + }; + + let processDomain = (domain, isAlternate) => { + let key = domain + urlParsingInfo.path; + + // Apply the logic for which main domains take priority over alternate + // domains, even if they are found later in the ordered engine list. + let existingEntry = this._parseSubmissionMap.get(key); + if (!existingEntry) { + LOG("Adding new entry: " + key); + if (isAlternate) { + keysOfAlternates.add(key); + } + } else if (!isAlternate && keysOfAlternates.has(key)) { + LOG("Overriding alternate entry: " + key + + " (" + existingEntry.engine.name + ")"); + keysOfAlternates.delete(key); + } else { + LOG("Keeping existing entry: " + key + + " (" + existingEntry.engine.name + ")"); + return; + } + + this._parseSubmissionMap.set(key, mapValueForEngine); + }; + + processDomain(urlParsingInfo.mainDomain, false); + SearchStaticData.getAlternateDomains(urlParsingInfo.mainDomain) + .forEach(d => processDomain(d, true)); + } + }, + + parseSubmissionURL: function SRCH_SVC_parseSubmissionURL(aURL) { + this._ensureInitialized(); + LOG("parseSubmissionURL: Parsing \"" + aURL + "\"."); + + if (!this._parseSubmissionMap) { + this._buildParseSubmissionMap(); + } + + // Extract the elements of the provided URL first. + let soughtKey, soughtQuery; + try { + let soughtUrl = NetUtil.newURI(aURL).QueryInterface(Ci.nsIURL); + + // Exclude any URL that is not HTTP or HTTPS from the beginning. + if (soughtUrl.scheme != "http" && soughtUrl.scheme != "https") { + LOG("The URL scheme is not HTTP or HTTPS."); + return gEmptyParseSubmissionResult; + } + + // Reading these URL properties may fail and raise an exception. + soughtKey = soughtUrl.host + soughtUrl.filePath.toLowerCase(); + soughtQuery = soughtUrl.query; + } catch (ex) { + // Errors while parsing the URL or accessing the properties are not fatal. + LOG("The value does not look like a structured URL."); + return gEmptyParseSubmissionResult; + } + + // Look up the domain and path in the map to identify the search engine. + let mapEntry = this._parseSubmissionMap.get(soughtKey); + if (!mapEntry) { + LOG("No engine associated with domain and path: " + soughtKey); + return gEmptyParseSubmissionResult; + } + + // Extract the search terms from the parameter, for example "caff%C3%A8" + // from the URL "https://www.google.com/search?q=caff%C3%A8&client=firefox". + let encodedTerms = null; + for (let param of soughtQuery.split("&")) { + let equalPos = param.indexOf("="); + if (equalPos != -1 && + param.substr(0, equalPos) == mapEntry.termsParameterName) { + // This is the parameter we are looking for. + encodedTerms = param.substr(equalPos + 1); + break; + } + } + if (encodedTerms === null) { + LOG("Missing terms parameter: " + mapEntry.termsParameterName); + return gEmptyParseSubmissionResult; + } + + let length = 0; + let offset = aURL.indexOf("?") + 1; + let query = aURL.slice(offset); + // Iterate a second time over the original input string to determine the + // correct search term offset and length in the original encoding. + for (let param of query.split("&")) { + let equalPos = param.indexOf("="); + if (equalPos != -1 && + param.substr(0, equalPos) == mapEntry.termsParameterName) { + // This is the parameter we are looking for. + offset += equalPos + 1; + length = param.length - equalPos - 1; + break; + } + offset += param.length + 1; + } + + // Decode the terms using the charset defined in the search engine. + let terms; + try { + terms = gTextToSubURI.UnEscapeAndConvert( + mapEntry.engine.queryCharset, + encodedTerms.replace(/\+/g, " ")); + } catch (ex) { + // Decoding errors will cause this match to be ignored. + LOG("Parameter decoding failed. Charset: " + + mapEntry.engine.queryCharset); + return gEmptyParseSubmissionResult; + } + + LOG("Match found. Terms: " + terms); + return new ParseSubmissionResult(mapEntry.engine, terms, offset, length); + }, + + // nsIObserver + observe: function SRCH_SVC_observe(aEngine, aTopic, aVerb) { + switch (aTopic) { + case SEARCH_ENGINE_TOPIC: + switch (aVerb) { + case SEARCH_ENGINE_LOADED: + var engine = aEngine.QueryInterface(Ci.nsISearchEngine); + LOG("nsSearchService::observe: Done installation of " + engine.name + + "."); + this._addEngineToStore(engine.wrappedJSObject); + if (engine.wrappedJSObject._useNow) { + LOG("nsSearchService::observe: setting current"); + this.currentEngine = aEngine; + } + // The addition of the engine to the store always triggers an ADDED + // or a CHANGED notification, that will trigger the task below. + break; + case SEARCH_ENGINE_ADDED: + case SEARCH_ENGINE_CHANGED: + case SEARCH_ENGINE_REMOVED: + this.batchTask.disarm(); + this.batchTask.arm(); + // Invalidate the map used to parse URLs to search engines. + this._parseSubmissionMap = null; + break; + } + break; + + case QUIT_APPLICATION_TOPIC: + this._removeObservers(); + break; + + case "nsPref:changed": + if (aVerb == LOCALE_PREF) { + // Locale changed. Re-init. We rely on observers, because we can't + // return this promise to anyone. + this._asyncReInit(); + break; + } + } + }, + + // nsITimerCallback + notify: function SRCH_SVC_notify(aTimer) { + LOG("_notify: checking for updates"); + + if (!Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "update", true)) + return; + + // Our timer has expired, but unfortunately, we can't get any data from it. + // Therefore, we need to walk our engine-list, looking for expired engines + var currentTime = Date.now(); + LOG("currentTime: " + currentTime); + for (let name in this._engines) { + let engine = this._engines[name].wrappedJSObject; + if (!engine._hasUpdates) + continue; + + LOG("checking " + engine.name); + + var expirTime = engineMetadataService.getAttr(engine, "updateexpir"); + LOG("expirTime: " + expirTime + "\nupdateURL: " + engine._updateURL + + "\niconUpdateURL: " + engine._iconUpdateURL); + + var engineExpired = expirTime <= currentTime; + + if (!expirTime || !engineExpired) { + LOG("skipping engine"); + continue; + } + + LOG(engine.name + " has expired"); + + engineUpdateService.update(engine); + + // Schedule the next update + engineUpdateService.scheduleNextUpdate(engine); + + } // end engine iteration + }, + + _addObservers: function SRCH_SVC_addObservers() { + Services.obs.addObserver(this, SEARCH_ENGINE_TOPIC, false); + Services.obs.addObserver(this, QUIT_APPLICATION_TOPIC, false); + + // The current stage of shutdown. Used to help analyze crash + // signatures in case of shutdown timeout. + let shutdownState = { + step: "Not started", + latestError: { + message: undefined, + stack: undefined + } + }; + OS.File.profileBeforeChange.addBlocker( + "Search service: shutting down", + () => Task.spawn(function* () { + if (this._batchTask) { + shutdownState.step = "Finalizing batched task"; + try { + yield this._batchTask.finalize(); + shutdownState.step = "Batched task finalized"; + } catch (ex) { + shutdownState.step = "Batched task failed to finalize"; + + shutdownState.latestError.message = "" + ex; + if (ex && typeof ex == "object") { + shutdownState.latestError.stack = ex.stack || undefined; + } + + // Ensure that error is reported and that it causes tests + // to fail. + Promise.reject(ex); + } + } + + shutdownState.step = "Finalizing engine metadata service"; + yield engineMetadataService.finalize(); + shutdownState.step = "Engine metadata service finalized"; + + }.bind(this)), + + () => shutdownState + ); + }, + + _removeObservers: function SRCH_SVC_removeObservers() { + Services.obs.removeObserver(this, SEARCH_ENGINE_TOPIC); + Services.obs.removeObserver(this, QUIT_APPLICATION_TOPIC); + }, + + QueryInterface: function SRCH_SVC_QI(aIID) { + if (aIID.equals(Ci.nsIBrowserSearchService) || + aIID.equals(Ci.nsIObserver) || + aIID.equals(Ci.nsITimerCallback) || + aIID.equals(Ci.nsISupports)) + return this; + throw Cr.NS_ERROR_NO_INTERFACE; + } +}; + +var engineMetadataService = { + _jsonFile: OS.Path.join(OS.Constants.Path.profileDir, "search-metadata.json"), + + // Boolean flag that is true if initialization was successful. + _initialized: false, + + // A promise fulfilled once initialization is complete + _initializer: null, + + /** + * Asynchronous initializer + * + * Note: In the current implementation, initialization never fails. + */ + init: function epsInit() { + if (!this._initializer) { + // Launch asynchronous initialization + let initializer = this._initializer = Promise.defer(); + Task.spawn((function task_init() { + LOG("metadata init: starting"); + if (this._initialized) { + throw new Error("metadata init: invalid state, _initialized is " + + "true but initialization promise has not been " + + "resolved"); + } + // 1. Load json file if it exists + try { + let contents = yield OS.File.read(this._jsonFile); + if (this._initialized) { + // No need to pursue asynchronous initialization, + // synchronous fallback was called and has finished. + return; + } + this._store = JSON.parse(new TextDecoder().decode(contents)); + } catch (ex) { + if (this._initialized) { + // No need to pursue asynchronous initialization, + // synchronous fallback was called and has finished. + return; + } + // Couldn't load json, use an empty store + LOG("metadata init: could not load JSON file " + ex); + this._store = {}; + } + + this._initialized = true; + LOG("metadata init: complete"); + }).bind(this)).then( + // 3. Inform any observers + function onSuccess() { + initializer.resolve(); + }, + function onError() { + initializer.reject(); + } + ); + } + return this._initializer.promise; + }, + + /** + * Synchronous implementation of initializer + * + * This initializer is able to pick wherever the async initializer + * is waiting. The asynchronous initializer is expected to stop + * if it detects that the synchronous initializer has completed + * initialization. + */ + syncInit: function epsSyncInit() { + LOG("metadata syncInit start"); + if (this._initialized) { + return; + } + let jsonFile = new FileUtils.File(this._jsonFile); + // 1. Load json file if it exists + if (jsonFile.exists()) { + try { + let uri = Services.io.newFileURI(jsonFile); + let stream = Services.io.newChannelFromURI2(uri, + null, // aLoadingNode + Services.scriptSecurityManager.getSystemPrincipal(), + null, // aTriggeringPrincipal + Ci.nsILoadInfo.SEC_NORMAL, + Ci.nsIContentPolicy.TYPE_OTHER).open(); + this._store = parseJsonFromStream(stream); + } catch (x) { + LOG("metadata syncInit: could not load JSON file " + x); + this._store = {}; + } + } else { + LOG("metadata syncInit: using an empty store"); + this._store = {}; + } + + this._initialized = true; + + // 3. Inform any observers + if (this._initializer) { + this._initializer.resolve(); + } else { + this._initializer = Promise.resolve(); + } + LOG("metadata syncInit end"); + }, + + getAttr: function epsGetAttr(engine, name) { + let record = this._store[engine._id]; + if (!record) { + return null; + } + + // attr names must be lower case + let aName = name.toLowerCase(); + if (!record[aName]) + return null; + return record[aName]; + }, + + _globalFakeEngine: {_id: "[global]"}, + getGlobalAttr: function epsGetGlobalAttr(name) { + return this.getAttr(this._globalFakeEngine, name); + }, + + _setAttr: function epsSetAttr(engine, name, value) { + // attr names must be lower case + name = name.toLowerCase(); + let db = this._store; + let record = db[engine._id]; + if (!record) { + record = db[engine._id] = {}; + } + if (!record[name] || (record[name] != value)) { + record[name] = value; + return true; + } + return false; + }, + + /** + * Set one metadata attribute for an engine. + * + * If an actual change has taken place, the attribute is committed + * automatically (and lazily), using this._commit. + * + * @param {nsISearchEngine} engine The engine to update. + * @param {string} key The name of the attribute. Case-insensitive. In + * the current implementation, this _must not_ conflict with properties + * of |Object|. + * @param {*} value A value to store. + */ + setAttr: function epsSetAttr(engine, key, value) { + if (this._setAttr(engine, key, value)) { + this._commit(); + } + }, + + setGlobalAttr: function epsGetGlobalAttr(key, value) { + this.setAttr(this._globalFakeEngine, key, value); + }, + + /** + * Bulk set metadata attributes for a number of engines. + * + * If actual changes have taken place, the store is committed + * automatically (and lazily), using this._commit. + * + * @param {Array.<{engine: nsISearchEngine, key: string, value: *}>} changes + * The list of changes to effect. See |setAttr| for the documentation of + * |engine|, |key|, |value|. + */ + setAttrs: function epsSetAttrs(changes) { + let self = this; + let changed = false; + changes.forEach(function(change) { + changed |= self._setAttr(change.engine, change.key, change.value); + }); + if (changed) { + this._commit(); + } + }, + + /** + * Flush any waiting write. + */ + finalize: function () { + return this._lazyWriter ? this._lazyWriter.finalize() + : Promise.resolve(); + }, + + /** + * Commit changes to disk, asynchronously. + * + * Calls to this function are actually delayed by LAZY_SERIALIZE_DELAY + * (= 100ms). If the function is called again before the expiration of + * the delay, commits are merged and the function is again delayed by + * the same amount of time. + */ + _commit: function epsCommit() { + LOG("metadata _commit: start"); + if (!this._store) { + LOG("metadata _commit: nothing to do"); + return; + } + + if (!this._lazyWriter) { + LOG("metadata _commit: initializing lazy writer"); + let writeCommit = function () { + LOG("metadata writeCommit: start"); + let data = gEncoder.encode(JSON.stringify(engineMetadataService._store)); + let path = engineMetadataService._jsonFile; + LOG("metadata writeCommit: path " + path); + let promise = OS.File.writeAtomic(path, data, { tmpPath: path + ".tmp" }); + promise = promise.then( + function onSuccess() { + Services.obs.notifyObservers(null, + SEARCH_SERVICE_TOPIC, + SEARCH_SERVICE_METADATA_WRITTEN); + LOG("metadata writeCommit: done"); + } + ); + return promise; + } + this._lazyWriter = new DeferredTask(writeCommit, LAZY_SERIALIZE_DELAY); + } + LOG("metadata _commit: (re)setting timer"); + this._lazyWriter.disarm(); + this._lazyWriter.arm(); + }, + _lazyWriter: null +}; + +engineMetadataService._initialized = false; + +const SEARCH_UPDATE_LOG_PREFIX = "*** Search update: "; + +/** + * Outputs aText to the JavaScript console as well as to stdout, if the search + * logging pref (browser.search.update.log) is set to true. + */ +function ULOG(aText) { + if (Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "update.log", false)) { + dump(SEARCH_UPDATE_LOG_PREFIX + aText + "\n"); + Services.console.logStringMessage(aText); + } +} + +var engineUpdateService = { + scheduleNextUpdate: function eus_scheduleNextUpdate(aEngine) { + var interval = aEngine._updateInterval || SEARCH_DEFAULT_UPDATE_INTERVAL; + var milliseconds = interval * 86400000; // |interval| is in days + engineMetadataService.setAttr(aEngine, "updateexpir", + Date.now() + milliseconds); + }, + + update: function eus_Update(aEngine) { + let engine = aEngine.wrappedJSObject; + ULOG("update called for " + aEngine._name); + if (!Services.prefs.getBoolPref(BROWSER_SEARCH_PREF + "update", true) || !engine._hasUpdates) + return; + + let testEngine = null; + let updateURL = engine._getURLOfType(URLTYPE_OPENSEARCH); + let updateURI = (updateURL && updateURL._hasRelation("self")) ? + updateURL.getSubmission("", engine).uri : + makeURI(engine._updateURL); + if (updateURI) { + if (engine._isDefault && !updateURI.schemeIs("https")) { + ULOG("Invalid scheme for default engine update"); + return; + } + + ULOG("updating " + engine.name + " from " + updateURI.spec); + testEngine = new Engine(updateURI, false); + testEngine._engineToUpdate = engine; + testEngine._initFromURIAndLoad(); + } else + ULOG("invalid updateURI"); + + if (engine._iconUpdateURL) { + // If we're updating the engine too, use the new engine object, + // otherwise use the existing engine object. + (testEngine || engine)._setIcon(engine._iconUpdateURL, true); + } + } +}; + +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([SearchService]); + +#include ../../../toolkit/modules/debug.js |