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gecko/toolkit/components/search/nsSearchService.js
Gavin Sharp 97caa62981 Merge backout with previous tip
2008-09-23 11:47:43 -04:00

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# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is the Browser Search Service.
#
# The Initial Developer of the Original Code is
# Google Inc.
# Portions created by the Initial Developer are Copyright (C) 2005-2006
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Ben Goodger <beng@google.com> (Original author)
# Gavin Sharp <gavin@gavinsharp.com>
# Joe Hughes <joe@retrovirus.com>
# Pamela Greene <pamg.bugs@gmail.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cr = Components.results;
const PERMS_FILE = 0644;
const PERMS_DIRECTORY = 0755;
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_USER_SEARCH_DIR = "UsrSrchPlugns";
const NS_APP_SEARCH_DIR = "SrchPlugns";
const NS_APP_USER_PROFILE_50_DIR = "ProfD";
// 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;
// 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_TYPE_MOZSEARCH = Ci.nsISearchEngine.TYPE_MOZSEARCH;
const SEARCH_TYPE_OPENSEARCH = Ci.nsISearchEngine.TYPE_OPENSEARCH;
const SEARCH_TYPE_SHERLOCK = Ci.nsISearchEngine.TYPE_SHERLOCK;
const SEARCH_DATA_XML = Ci.nsISearchEngine.DATA_XML;
const SEARCH_DATA_TEXT = Ci.nsISearchEngine.DATA_TEXT;
// File extensions for search plugin description files
const XML_FILE_EXT = "xml";
const SHERLOCK_FILE_EXT = "src";
// Delay for lazy serialization (ms)
const LAZY_SERIALIZE_DELAY = 100;
const ICON_DATAURL_PREFIX = "data:image/x-icon;base64,";
// Supported extensions for Sherlock plugin icons
const SHERLOCK_ICON_EXTENSIONS = [".gif", ".png", ".jpg", ".jpeg"];
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";
// 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 USER_DEFINED = "{searchTerms}";
// Custom search parameters
#ifdef OFFICIAL_BUILD
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;
// Returns false for whitespace-only or commented out lines in a
// Sherlock file, true otherwise.
function isUsefulLine(aLine) {
return !(/^\s*($|#)/i.test(aLine));
}
/**
* 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");
var consoleService = Cc["@mozilla.org/consoleservice;1"].
getService(Ci.nsIConsoleService);
consoleService.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) {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var shouldLog = false;
try {
shouldLog = prefB.getBoolPref(BROWSER_SEARCH_PREF + "log");
} catch (ex) {}
if (shouldLog) {
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
function ERROR(message, resultCode) {
NS_ASSERT(false, SEARCH_LOG_PREFIX + message);
throw resultCode;
}
/**
* 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 resultCode;
}
/**
* Ensures an assertion is met before continuing, but does not warn the user.
* Used to handle normal failure conditions.
* @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(assertion, message, resultCode) {
if (!assertion) {
LOG(message);
throw resultCode;
}
}
/**
* Ensures an argument assertion is met before continuing.
* @param assertion
* An argument assertion that must be met
* @param message
* A message to display if the assertion is not met
* @throws NS_ERROR_INVALID_ARG for invalid arguments
*/
function ENSURE_ARG(assertion, message) {
ENSURE(assertion, message, Cr.NS_ERROR_INVALID_ARG);
}
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) ||
aIID.equals(Ci.nsIBadCertListener2) ||
aIID.equals(Ci.nsISSLErrorListener) ||
// 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
onChannelRedirect: function SRCH_loadCRedirect(aOldChannel, aNewChannel,
aFlags) {
this._channel = aNewChannel;
},
// nsIInterfaceRequestor
getInterface: function SRCH_load_GI(aIID) {
return this.QueryInterface(aIID);
},
// nsIBadCertListener2
notifyCertProblem: function SRCH_certProblem(socketInfo, status, targetSite) {
return true;
},
// nsISSLErrorListener
notifySSLError: function SRCH_SSLError(socketInfo, error, targetSite) {
return true;
},
// FIXME: bug 253127
// nsIHttpEventSink
onRedirect: function (aChannel, aNewChannel) {},
// nsIProgressEventSink
onProgress: function (aRequest, aContext, aProgress, aProgressMax) {},
onStatus: function (aRequest, aContext, aStatus, aStatusArg) {}
}
/**
* Used to verify a given DOM node's localName and namespaceURI.
* @param aElement
* The element to verify.
* @param aLocalNameArray
* An array of strings to compare against aElement's localName.
* @param aNameSpaceArray
* An array of strings to compare against aElement's namespaceURI.
*
* @returns false if aElement is null, or if its localName or namespaceURI
* does not match one of the elements in the aLocalNameArray or
* aNameSpaceArray arrays, respectively.
* @throws NS_ERROR_INVALID_ARG if aLocalNameArray or aNameSpaceArray are null.
*/
function checkNameSpace(aElement, aLocalNameArray, aNameSpaceArray) {
ENSURE_ARG(aLocalNameArray && aNameSpaceArray, "missing aLocalNameArray or \
aNameSpaceArray for checkNameSpace");
return (aElement &&
(aLocalNameArray.indexOf(aElement.localName) != -1) &&
(aNameSpaceArray.indexOf(aElement.namespaceURI) != -1));
}
/**
* 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) {
var ios = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
try {
return ios.newURI(aURLSpec, aCharset, null);
} 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) {
ENSURE_ARG(aKey, "getDir requires a directory key!");
var fileLocator = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties);
var dir = fileLocator.get(aKey, Ci.nsIFile);
return dir;
}
/**
* The following two functions are essentially copied from
* nsInternetSearchService. They are required for backwards compatibility.
*/
function queryCharsetFromCode(aCode) {
const codes = [];
codes[0] = "x-mac-roman";
codes[6] = "x-mac-greek";
codes[35] = "x-mac-turkish";
codes[513] = "ISO-8859-1";
codes[514] = "ISO-8859-2";
codes[517] = "ISO-8859-5";
codes[518] = "ISO-8859-6";
codes[519] = "ISO-8859-7";
codes[520] = "ISO-8859-8";
codes[521] = "ISO-8859-9";
codes[1049] = "IBM864";
codes[1280] = "windows-1252";
codes[1281] = "windows-1250";
codes[1282] = "windows-1251";
codes[1283] = "windows-1253";
codes[1284] = "windows-1254";
codes[1285] = "windows-1255";
codes[1286] = "windows-1256";
codes[1536] = "us-ascii";
codes[1584] = "GB2312";
codes[1585] = "x-gbk";
codes[1600] = "EUC-KR";
codes[2080] = "ISO-2022-JP";
codes[2096] = "ISO-2022-CN";
codes[2112] = "ISO-2022-KR";
codes[2336] = "EUC-JP";
codes[2352] = "GB2312";
codes[2353] = "x-euc-tw";
codes[2368] = "EUC-KR";
codes[2561] = "Shift_JIS";
codes[2562] = "KOI8-R";
codes[2563] = "Big5";
codes[2565] = "HZ-GB-2312";
if (codes[aCode])
return codes[aCode];
return getLocalizedPref("intl.charset.default", DEFAULT_QUERY_CHARSET);
}
function fileCharsetFromCode(aCode) {
const codes = [
"x-mac-roman", // 0
"Shift_JIS", // 1
"Big5", // 2
"EUC-KR", // 3
"X-MAC-ARABIC", // 4
"X-MAC-HEBREW", // 5
"X-MAC-GREEK", // 6
"X-MAC-CYRILLIC", // 7
"X-MAC-DEVANAGARI" , // 9
"X-MAC-GURMUKHI", // 10
"X-MAC-GUJARATI", // 11
"X-MAC-ORIYA", // 12
"X-MAC-BENGALI", // 13
"X-MAC-TAMIL", // 14
"X-MAC-TELUGU", // 15
"X-MAC-KANNADA", // 16
"X-MAC-MALAYALAM", // 17
"X-MAC-SINHALESE", // 18
"X-MAC-BURMESE", // 19
"X-MAC-KHMER", // 20
"X-MAC-THAI", // 21
"X-MAC-LAOTIAN", // 22
"X-MAC-GEORGIAN", // 23
"X-MAC-ARMENIAN", // 24
"GB2312", // 25
"X-MAC-TIBETAN", // 26
"X-MAC-MONGOLIAN", // 27
"X-MAC-ETHIOPIC", // 28
"X-MAC-CENTRALEURROMAN", // 29
"X-MAC-VIETNAMESE", // 30
"X-MAC-EXTARABIC" // 31
];
// Sherlock files have always defaulted to x-mac-roman, so do that here too
return codes[aCode] || codes[0];
}
/**
* Returns a string interpretation of aBytes using aCharset, or null on
* failure.
*/
function bytesToString(aBytes, aCharset) {
var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
createInstance(Ci.nsIScriptableUnicodeConverter);
LOG("bytesToString: converting using charset: " + aCharset);
try {
converter.charset = aCharset;
return converter.convertFromByteArray(aBytes, aBytes.length);
} catch (ex) {}
return null;
}
/**
* Converts an array of bytes representing a Sherlock file into an array of
* lines representing the useful data from the file.
*
* @param aBytes
* The array of bytes representing the Sherlock file.
* @param aCharsetCode
* An integer value representing a character set code to be passed to
* fileCharsetFromCode, or null for the default Sherlock encoding.
*/
function sherlockBytesToLines(aBytes, aCharsetCode) {
// fileCharsetFromCode returns the default encoding if aCharsetCode is null
var charset = fileCharsetFromCode(aCharsetCode);
var dataString = bytesToString(aBytes, charset);
ENSURE(dataString, "sherlockBytesToLines: Couldn't convert byte array!",
Cr.NS_ERROR_FAILURE);
// Split the string into lines, and filter out comments and
// whitespace-only lines
return dataString.split(NEW_LINES).filter(isUsefulLine);
}
/**
* 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() {
const localePref = "general.useragent.locale";
var locale = getLocalizedPref(localePref);
if (locale)
return locale;
// Not localized
var prefs = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
return prefs.getCharPref(localePref);
}
/**
* 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) {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
const nsIPLS = Ci.nsIPrefLocalizedString;
try {
return prefB.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) {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
const nsIPLS = Ci.nsIPrefLocalizedString;
try {
var pls = Components.classes["@mozilla.org/pref-localizedstring;1"]
.createInstance(Ci.nsIPrefLocalizedString);
pls.data = aValue;
prefB.setComplexValue(aPrefName, nsIPLS, pls);
} catch (ex) {}
}
/**
* Wrapper for nsIPrefBranch::getBoolPref.
* @param aPrefName
* The name of the pref to get.
* @returns aDefault if the requested pref doesn't exist.
*/
function getBoolPref(aName, aDefault) {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
try {
return prefB.getBoolPref(aName);
} catch (ex) {
return aDefault;
}
}
/**
* 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_FILE_EXT;
var file = getDir(NS_APP_USER_SEARCH_DIR);
file.append(fileName);
file.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, PERMS_FILE);
return file;
}
/**
* Removes all characters not in the "chars" string from aName.
*
* @returns 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 chars = "-abcdefghijklmnopqrstuvwxyz0123456789";
const maxLength = 60;
var name = aName.toLowerCase();
name = name.replace(/ /g, "-");
name = name.split("").filter(function (el) {
return chars.indexOf(el) != -1;
}).join("");
if (!name) {
// Our input had no valid characters - use a random name
var cl = chars.length - 1;
for (var i = 0; i < 8; ++i)
name += chars.charAt(Math.round(Math.random() * cl));
}
if (name.length > maxLength)
name = name.substring(0, maxLength);
return name;
}
/**
* 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
*/
function notifyAction(aEngine, aVerb) {
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
LOG("NOTIFY: Engine: \"" + aEngine.name + "\"; Verb: \"" + aVerb + "\"");
os.notifyObservers(aEngine, SEARCH_ENGINE_TOPIC, aVerb);
}
/**
* Simple object representing a name/value pair.
*/
function QueryParameter(aName, aValue) {
ENSURE_ARG(aName && (aValue != null),
"missing name or value for QueryParameter!");
this.name = aName;
this.value = aValue;
}
/**
* 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 aQueryEncoding
* The value to use for the OS_PARAM_INPUT_ENCODING parameter. See
* definition in the OpenSearch spec.
*
* @see http://opensearch.a9.com/spec/1.1/querysyntax/#core
*/
function ParamSubstitution(aParamValue, aSearchTerms, aEngine) {
var value = aParamValue;
var distributionID = MOZ_DISTRIBUTION_ID;
try {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
distributionID = prefB.getCharPref(BROWSER_SEARCH_PREF + "distributionID");
}
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, MOZ_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 a mozStorage statement that can be used to access the database we
* use to hold metadata.
*
* @param dbconn the database that the statement applies to
* @param sql a string specifying the sql statement that should be created
*/
function createStatement (dbconn, sql) {
var stmt = dbconn.createStatement(sql);
var wrapper = Cc["@mozilla.org/storage/statement-wrapper;1"].
createInstance(Ci.mozIStorageStatementWrapper);
wrapper.initialize(stmt);
return wrapper;
}
/**
* 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.
*
* @see http://opensearch.a9.com/spec/1.1/querysyntax/#urltag
*
* @throws NS_ERROR_NOT_IMPLEMENTED if aType is unsupported.
*/
function EngineURL(aType, aMethod, aTemplate) {
ENSURE_ARG(aType && aMethod && aTemplate,
"missing type, method or template for EngineURL!");
var method = aMethod.toUpperCase();
var type = aType.toLowerCase();
ENSURE_ARG(method == "GET" || method == "POST",
"method passed to EngineURL must be \"GET\" or \"POST\"");
this.type = type;
this.method = method;
this.params = [];
var templateURI = makeURI(aTemplate);
ENSURE(templateURI, "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:
ENSURE(false, "new EngineURL: template uses invalid scheme!",
Cr.NS_ERROR_FAILURE);
}
}
EngineURL.prototype = {
addParam: function SRCH_EURL_addParam(aName, aValue) {
this.params.push(new QueryParameter(aName, aValue));
},
getSubmission: function SRCH_EURL_getSubmission(aSearchTerms, aEngine) {
var url = ParamSubstitution(this.template, aSearchTerms, aEngine);
// 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];
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);
#ifdef MOZILLA_1_8_BRANCH
# bug 318193
stringStream.setData(dataString, dataString.length);
#else
stringStream.data = dataString;
#endif
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);
},
/**
* 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);
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 aSourceDataType
* The data type of the file used to describe the engine. Must be either
* DATA_XML or DATA_TEXT.
* @param aIsReadOnly
* Boolean indicating whether the engine should be treated as read-only.
* Read only engines cannot be serialized to file.
*/
function Engine(aLocation, aSourceDataType, aIsReadOnly) {
this._dataType = aSourceDataType;
this._readOnly = aIsReadOnly;
this._urls = [];
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) {
this._uri = aLocation;
switch (aLocation.scheme) {
case "https":
case "http":
case "ftp":
case "data":
case "file":
case "resource":
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.
_alias: null,
// The data describing the engine. Is either an array of bytes, for Sherlock
// files, or an XML document element, for XML plugins.
_data: null,
// The engine's data type. See data types (DATA_) defined above.
_dataType: 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,
// Set to true if the engine has a preferred icon (an icon that should not be
// overridden by a non-preferred icon).
_hasPreferredIcon: null,
// Whether the engine is hidden from the user.
_hidden: null,
// The engine's name.
_name: null,
// The engine type. See engine types (TYPE_) defined above.
_type: null,
// The name of the charset used to submit the search terms.
_queryCharset: null,
// A URL string pointing to the engine's search form.
_searchForm: null,
// The URI object from which the engine was retrieved.
// This is null for local plugins, and is used for error messages and logging.
_uri: null,
// 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: true,
// 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,
// A reference to the timer used for lazily serializing the engine to file
_serializeTimer: null,
/**
* Retrieves the data from the engine's file. If the engine's dataType is
* XML, the document element is placed in the engine's data field. For text
* engines, the data is just read directly from file and placed as an array
* of lines in the engine's data field.
*/
_initFromFile: function SRCH_ENG_initFromFile() {
ENSURE(this._file && this._file.exists(),
"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, PERMS_FILE, false);
switch (this._dataType) {
case SEARCH_DATA_XML:
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;
break;
case SEARCH_DATA_TEXT:
var binaryInStream = Cc["@mozilla.org/binaryinputstream;1"].
createInstance(Ci.nsIBinaryInputStream);
binaryInStream.setInputStream(fileInStream);
var bytes = binaryInStream.readByteArray(binaryInStream.available());
this._data = bytes;
break;
default:
ERROR("Bogus engine _dataType: \"" + this._dataType + "\"",
Cr.NS_ERROR_UNEXPECTED);
}
fileInStream.close();
// Now that the data is loaded, initialize the engine object
this._initFromData();
},
/**
* Retrieves the engine data from a URI.
*/
_initFromURI: function SRCH_ENG_initFromURI() {
ENSURE_WARN(this._uri instanceof Ci.nsIURI,
"Must have URI when calling _initFromURI!",
Cr.NS_ERROR_UNEXPECTED);
LOG("_initFromURI: Downloading engine from: \"" + this._uri.spec + "\".");
var ios = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
var chan = ios.newChannelFromURI(this._uri);
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);
},
/**
* 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
*/
_getURLOfType: function SRCH_ENG__getURLOfType(aType) {
for (var i = 0; i < this._urls.length; ++i) {
if (this._urls[i].type == aType)
return this._urls[i];
}
return null;
},
_confirmAddEngine: function SRCH_SVC_confirmAddEngine() {
var sbs = Cc["@mozilla.org/intl/stringbundle;1"].
getService(Ci.nsIStringBundleService);
var stringBundle = sbs.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 = stringBundle.GetStringFromName("addEngineUseNowText");
var addButtonLabel =
stringBundle.GetStringFromName("addEngineAddButtonLabel");
var ps = Cc["@mozilla.org/embedcomp/prompt-service;1"].
getService(Ci.nsIPromptService);
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 prompting the user to
* notify him that the load failed.
*/
function onError(aErrorString, aTitleString) {
if (aEngine._engineToUpdate) {
// We're in an update, so just fail quietly
LOG("updating " + aEngine._engineToUpdate.name + " failed");
return;
}
var sbs = Cc["@mozilla.org/intl/stringbundle;1"].
getService(Ci.nsIStringBundleService);
var brandBundle = sbs.createBundle(BRAND_BUNDLE);
var brandName = brandBundle.GetStringFromName("brandShortName");
var searchBundle = sbs.createBundle(SEARCH_BUNDLE);
var msgStringName = aErrorString || "error_loading_engine_msg2";
var titleStringName = aTitleString || "error_loading_engine_title";
var title = searchBundle.GetStringFromName(titleStringName);
var text = searchBundle.formatStringFromName(msgStringName,
[brandName, aEngine._location],
2);
var ww = Cc["@mozilla.org/embedcomp/window-watcher;1"].
getService(Ci.nsIWindowWatcher);
ww.getNewPrompter(null).alert(title, text);
}
if (!aBytes) {
onError();
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;
}
switch (aEngine._dataType) {
case SEARCH_DATA_XML:
var parser = Cc["@mozilla.org/xmlextras/domparser;1"].
createInstance(Ci.nsIDOMParser);
var doc = parser.parseFromBuffer(aBytes, aBytes.length, "text/xml");
aEngine._data = doc.documentElement;
break;
case SEARCH_DATA_TEXT:
aEngine._data = aBytes;
break;
default:
onError();
LOG("_onLoad: Bogus engine _dataType: \"" + this._dataType + "\"");
return;
}
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
onError();
return;
}
// Check to see if this is a duplicate engine. If we're confirming the
// engine load, then we display a "this is a duplicate engine" prompt,
// otherwise we fail silently.
if (!engineToUpdate) {
var ss = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
if (ss.getEngineByName(aEngine.name)) {
if (aEngine._confirm)
onError("error_duplicate_engine_msg", "error_invalid_engine_title");
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)
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());
// Set the new engine's icon, if it doesn't yet have one.
if (!aEngine._iconURI && engineToUpdate._iconURI)
aEngine._iconURI = engineToUpdate._iconURI;
// Clear the "use now" flag since we don't want to be changing the
// current engine for an update.
aEngine._useNow = false;
}
// Write the engine to file
aEngine._serializeToFile();
// Notify the search service of the sucessful load. It will deal with
// updates by checking aEngine._engineToUpdate.
notifyAction(aEngine, SEARCH_ENGINE_LOADED);
},
/**
* Sets the .iconURI property of the engine.
*
* @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.
*/
_setIcon: function SRCH_ENG_setIcon(aIconURL, aIsPreferred) {
// If we already have a preferred icon, and this isn't a preferred icon,
// just ignore it.
if (this._hasPreferredIcon && !aIsPreferred)
return;
var uri = makeURI(aIconURL);
// Ignore bad URIs
if (!uri)
return;
LOG("_setIcon: Setting icon url \"" + uri.spec + "\" for engine \""
+ this.name + "\".");
// Only accept remote icons from http[s] or ftp
switch (uri.scheme) {
case "data":
this._iconURI = uri;
notifyAction(this, SEARCH_ENGINE_CHANGED);
this._hasPreferredIcon = aIsPreferred;
break;
case "http":
case "https":
case "ftp":
// No use downloading the icon if the engine file is read-only
if (!this._readOnly) {
LOG("_setIcon: Downloading icon: \"" + uri.spec +
"\" for engine: \"" + this.name + "\"");
var ios = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
var chan = ios.newChannelFromURI(uri);
function iconLoadCallback(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));
aEngine._iconURI = makeURI(ICON_DATAURL_PREFIX + str);
// 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.
if (aEngine._file)
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);
// Find out what type of engine we are
switch (this._dataType) {
case SEARCH_DATA_XML:
if (checkNameSpace(this._data, [MOZSEARCH_LOCALNAME],
[MOZSEARCH_NS_10])) {
LOG("_init: Initing MozSearch plugin from " + this._location);
this._type = SEARCH_TYPE_MOZSEARCH;
this._parseAsMozSearch();
} else if (checkNameSpace(this._data, [OPENSEARCH_LOCALNAME],
OPENSEARCH_NAMESPACES)) {
LOG("_init: Initing OpenSearch plugin from " + this._location);
this._type = SEARCH_TYPE_OPENSEARCH;
this._parseAsOpenSearch();
} else
ENSURE(false, this._location + " is not a valid search plugin.",
Cr.NS_ERROR_FAILURE);
break;
case SEARCH_DATA_TEXT:
LOG("_init: Initing Sherlock plugin from " + this._location);
// the only text-based format we support is Sherlock
this._type = SEARCH_TYPE_SHERLOCK;
this._parseAsSherlock();
}
// 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) {
ENSURE_WARN(!this._readOnly,
"Can't call _initFromMetaData on a readonly engine!",
Cr.NS_ERROR_FAILURE);
this._urls.push(new EngineURL("text/html", aMethod, aTemplate));
this._name = aName;
this.alias = aAlias;
this._description = aDescription;
this._setIcon(aIconURL, true);
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");
try {
var url = new EngineURL(type, method, template);
} catch (ex) {
LOG("_parseURL: failed to add " + template + " as a URL");
throw Cr.NS_ERROR_FAILURE;
}
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;
switch (param.getAttribute("condition")) {
case "defaultEngine":
const defPref = BROWSER_SEARCH_PREF + "defaultenginename";
var defaultPrefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefService).
getDefaultBranch(null);
const nsIPLS = Ci.nsIPrefLocalizedString;
var defaultName;
try {
defaultName = defaultPrefB.getComplexValue(defPref, nsIPLS).data;
} catch (ex) {}
// If this engine was the default search engine, use the true value
if (this.name == defaultName)
value = param.getAttribute("trueValue");
else
value = param.getAttribute("falseValue");
url.addParam(param.getAttribute("name"), value);
break;
case "pref":
try {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
value = prefB.getCharPref(BROWSER_SEARCH_PREF + "param." +
param.getAttribute("pref"));
url.addParam(param.getAttribute("name"), value);
} catch (e) { }
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: \"" + aElement.textContent + "\"");
if (aElement.getAttribute("width") == "16" &&
aElement.getAttribute("height") == "16") {
this._setIcon(aElement.textContent, true);
}
},
_parseAsMozSearch: function SRCH_ENG_parseAsMoz() {
//forward to the OpenSearch parser
this._parseAsOpenSearch();
},
/**
* Extract search engine information from the collected data to initialize
* the engine object.
*/
_parseAsOpenSearch: function SRCH_ENG_parseAsOS() {
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.
}
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;
}
}
ENSURE(this.name && (this._urls.length > 0),
"_parseAsOpenSearch: No name, or missing URL!",
Cr.NS_ERROR_FAILURE);
ENSURE(this.supportsResponseType(URLTYPE_SEARCH_HTML),
"_parseAsOpenSearch: No text/html result type!",
Cr.NS_ERROR_FAILURE);
},
/**
* Extract search engine information from the collected data to initialize
* the engine object.
*/
_parseAsSherlock: function SRCH_ENG_parseAsSherlock() {
/**
* Extracts one Sherlock "section" from aSource. A section is essentially
* an HTML element with attributes, but each attribute must be on a new
* line, by definition.
*
* @param aLines
* An array of lines from the sherlock file.
* @param aSection
* The name of the section (e.g. "search" or "browser"). This value
* is not case sensitive.
* @returns an object whose properties correspond to the section's
* attributes.
*/
function getSection(aLines, aSection) {
LOG("_parseAsSherlock::getSection: Sherlock lines:\n" +
aLines.join("\n"));
var lines = aLines;
var startMark = new RegExp("^\\s*<" + aSection.toLowerCase() + "\\s*",
"gi");
var endMark = /\s*>\s*$/gi;
var foundStart = false;
var startLine, numberOfLines;
// Find the beginning and end of the section
for (var i = 0; i < lines.length; i++) {
if (foundStart) {
if (endMark.test(lines[i])) {
numberOfLines = i - startLine;
// Remove the end marker
lines[i] = lines[i].replace(endMark, "");
// If the endmarker was not the only thing on the line, include
// this line in the results
if (lines[i])
numberOfLines++;
break;
}
} else {
if (startMark.test(lines[i])) {
foundStart = true;
// Remove the start marker
lines[i] = lines[i].replace(startMark, "");
startLine = i;
// If the line is empty, don't include it in the result
if (!lines[i])
startLine++;
}
}
}
LOG("_parseAsSherlock::getSection: Start index: " + startLine +
"\nNumber of lines: " + numberOfLines);
lines = lines.splice(startLine, numberOfLines);
LOG("_parseAsSherlock::getSection: Section lines:\n" +
lines.join("\n"));
var section = {};
for (var i = 0; i < lines.length; i++) {
var line = lines[i].trim();
var els = line.split("=");
var name = els.shift().trim().toLowerCase();
var value = els.join("=").trim();
if (!name || !value)
continue;
// Strip leading and trailing whitespace, remove quotes from the
// value, and remove any trailing slashes or ">" characters
value = value.replace(/^["']/, "")
.replace(/["']\s*[\\\/]?>?\s*$/, "") || "";
value = value.trim();
// Don't clobber existing attributes
if (!(name in section))
section[name] = value;
}
return section;
}
/**
* Returns an array of name-value pair arrays representing the Sherlock
* file's input elements. User defined inputs return USER_DEFINED
* as the value. Elements are returned in the order they appear in the
* source file.
*
* Example:
* <input name="foo" value="bar">
* <input name="foopy" user>
* Returns:
* [["foo", "bar"], ["foopy", "{searchTerms}"]]
*
* @param aLines
* An array of lines from the source file.
*/
function getInputs(aLines) {
/**
* Extracts an attribute value from a given a line of text.
* Example: <input value="foo" name="bar">
* Extracts the string |foo| or |bar| given an input aAttr of
* |value| or |name|.
* Attributes may be quoted or unquoted. If unquoted, any whitespace
* indicates the end of the attribute value.
* Example: < value=22 33 name=44\334 >
* Returns |22| for "value" and |44\334| for "name".
*
* @param aAttr
* The name of the attribute for which to obtain the value. This
* value is not case sensitive.
* @param aLine
* The line containing the attribute.
*
* @returns the attribute value, or an empty string if the attribute
* doesn't exist.
*/
function getAttr(aAttr, aLine) {
// Used to determine whether an "input" line from a Sherlock file is a
// "user defined" input.
const userInput = /(\s|["'=])user(\s|[>="'\/\\+]|$)/i;
LOG("_parseAsSherlock::getAttr: Getting attr: \"" +
aAttr + "\" for line: \"" + aLine + "\"");
// We're not case sensitive, but we want to return the attribute value
// in its original case, so create a copy of the source
var lLine = aLine.toLowerCase();
var attr = aAttr.toLowerCase();
var attrStart = lLine.search(new RegExp("\\s" + attr, "i"));
if (attrStart == -1) {
// If this is the "user defined input" (i.e. contains the empty
// "user" attribute), return our special keyword
if (userInput.test(lLine) && attr == "value") {
LOG("_parseAsSherlock::getAttr: Found user input!\nLine:\"" + lLine
+ "\"");
return USER_DEFINED;
}
// The attribute doesn't exist - ignore
LOG("_parseAsSherlock::getAttr: Failed to find attribute:\nLine:\""
+ lLine + "\"\nAttr:\"" + attr + "\"");
return "";
}
var valueStart = lLine.indexOf("=", attrStart) + "=".length;
if (valueStart == -1)
return "";
var quoteStart = lLine.indexOf("\"", valueStart);
if (quoteStart == -1) {
// Unquoted attribute, get the rest of the line, trimmed at the first
// sign of whitespace. If the rest of the line is only whitespace,
// returns a blank string.
return lLine.substr(valueStart).replace(/\s.*$/, "");
} else {
// Make sure that there's only whitespace between the start of the
// value and the first quote. If there is, end the attribute value at
// the first sign of whitespace. This prevents us from falling into
// the next attribute if this is an unquoted attribute followed by a
// quoted attribute.
var betweenEqualAndQuote = lLine.substring(valueStart, quoteStart);
if (/\S/.test(betweenEqualAndQuote))
return lLine.substr(valueStart).replace(/\s.*$/, "");
// Adjust the start index to account for the opening quote
valueStart = quoteStart + "\"".length;
// Find the closing quote
valueEnd = lLine.indexOf("\"", valueStart);
// If there is no closing quote, just go to the end of the line
if (valueEnd == -1)
valueEnd = aLine.length;
}
return aLine.substring(valueStart, valueEnd);
}
var inputs = [];
LOG("_parseAsSherlock::getInputs: Lines:\n" + aLines);
// Filter out everything but non-inputs
lines = aLines.filter(function (line) {
return /^\s*<input/i.test(line);
});
LOG("_parseAsSherlock::getInputs: Filtered lines:\n" + lines);
lines.forEach(function (line) {
// Strip leading/trailing whitespace and remove the surrounding markup
// ("<input" and ">")
line = line.trim().replace(/^<input/i, "").replace(/>$/, "");
// If this is one of the "directional" inputs (<inputnext>/<inputprev>)
const directionalInput = /^(prev|next)/i;
if (directionalInput.test(line)) {
// Make it look like a normal input by removing "prev" or "next"
line = line.replace(directionalInput, "");
// If it has a name, give it a dummy value to match previous
// nsInternetSearchService behavior
if (/name\s*=/i.test(line)) {
line += " value=\"0\"";
} else
return; // Line has no name, skip it
}
var attrName = getAttr("name", line);
var attrValue = getAttr("value", line);
LOG("_parseAsSherlock::getInputs: Got input:\nName:\"" + attrName +
"\"\nValue:\"" + attrValue + "\"");
if (attrValue)
inputs.push([attrName, attrValue]);
});
return inputs;
}
function err(aErr) {
LOG("_parseAsSherlock::err: Sherlock param error:\n" + aErr);
throw Cr.NS_ERROR_FAILURE;
}
// First try converting our byte array using the default Sherlock encoding.
// If this fails, or if we find a sourceTextEncoding attribute, we need to
// reconvert the byte array using the specified encoding.
var sherlockLines, searchSection, sourceTextEncoding, browserSection;
try {
sherlockLines = sherlockBytesToLines(this._data);
searchSection = getSection(sherlockLines, "search");
browserSection = getSection(sherlockLines, "browser");
sourceTextEncoding = parseInt(searchSection["sourcetextencoding"]);
if (sourceTextEncoding) {
// Re-convert the bytes using the found sourceTextEncoding
sherlockLines = sherlockBytesToLines(this._data, sourceTextEncoding);
searchSection = getSection(sherlockLines, "search");
browserSection = getSection(sherlockLines, "browser");
}
} catch (ex) {
// The conversion using the default charset failed. Remove any non-ascii
// bytes and try to find a sourceTextEncoding.
var asciiBytes = this._data.filter(function (n) {return !(0x80 & n);});
var asciiString = String.fromCharCode.apply(null, asciiBytes);
sherlockLines = asciiString.split(NEW_LINES).filter(isUsefulLine);
searchSection = getSection(sherlockLines, "search");
sourceTextEncoding = parseInt(searchSection["sourcetextencoding"]);
if (sourceTextEncoding) {
sherlockLines = sherlockBytesToLines(this._data, sourceTextEncoding);
searchSection = getSection(sherlockLines, "search");
browserSection = getSection(sherlockLines, "browser");
} else
ERROR("Couldn't find a working charset", Cr.NS_ERROR_FAILURE);
}
LOG("_parseAsSherlock: Search section:\n" + searchSection.toSource());
this._name = searchSection["name"] || err("Missing name!");
this._description = searchSection["description"] || "";
this._queryCharset = searchSection["querycharset"] ||
queryCharsetFromCode(searchSection["queryencoding"]);
this._searchForm = searchSection["searchform"];
this._updateInterval = parseInt(browserSection["updatecheckdays"]);
this._updateURL = browserSection["update"];
this._iconUpdateURL = browserSection["updateicon"];
var method = (searchSection["method"] || "GET").toUpperCase();
var template = searchSection["action"] || err("Missing action!");
var inputs = getInputs(sherlockLines);
LOG("_parseAsSherlock: Inputs:\n" + inputs.toSource());
var url = null;
if (method == "GET") {
// Here's how we construct the input string:
// <input> is first: Name Attr: Prefix Data Example:
// YES EMPTY None <value> TEMPLATE<value>
// YES NON-EMPTY ? <name>=<value> TEMPLATE?<name>=<value>
// NO EMPTY ------------- <ignored> --------------
// NO NON-EMPTY & <name>=<value> TEMPLATE?<n1>=<v1>&<n2>=<v2>
for (var i = 0; i < inputs.length; i++) {
var name = inputs[i][0];
var value = inputs[i][1];
if (i==0) {
if (name == "")
template += USER_DEFINED;
else
template += "?" + name + "=" + value;
} else if (name != "")
template += "&" + name + "=" + value;
}
url = new EngineURL("text/html", method, template);
} else if (method == "POST") {
// Create the URL object and just add the parameters directly
url = new EngineURL("text/html", method, template);
for (var i = 0; i < inputs.length; i++) {
var name = inputs[i][0];
var value = inputs[i][1];
if (name)
url.addParam(name, value);
}
} else
err("Invalid method!");
this._urls.push(url);
},
/**
* 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);
for (var i = 0; i < this._urls.length; ++i)
this._urls[i]._serializeToElement(doc, docElem);
docElem.appendChild(doc.createTextNode("\n"));
return doc;
},
_lazySerializeToFile: function SRCH_ENG_serializeToFile() {
if (this._serializeTimer) {
// Reset the timer
this._serializeTimer.delay = LAZY_SERIALIZE_DELAY;
} else {
this._serializeTimer = Cc["@mozilla.org/timer;1"].
createInstance(Ci.nsITimer);
var timerCallback = {
self: this,
notify: function SRCH_ENG_notify(aTimer) {
try {
this.self._serializeToFile();
} catch (ex) {
LOG("Serialization from timer callback failed:\n" + ex);
}
this.self._serializeTimer = null;
}
};
this._serializeTimer.initWithCallback(timerCallback,
LAZY_SERIALIZE_DELAY,
Ci.nsITimer.TYPE_ONE_SHOT);
}
},
/**
* 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), 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);
},
/**
* 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() {
ENSURE(!this._readOnly, "Can't remove read only engine!",
Cr.NS_ERROR_FAILURE);
ENSURE(this._file && this._file.exists(),
"Can't remove engine: file doesn't exist!",
Cr.NS_ERROR_FILE_NOT_FOUND);
this._file.remove(false);
},
// nsISearchEngine
get alias() {
if (this._alias === null)
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);
},
get description() {
return this._description;
},
get hidden() {
if (this._hidden === null)
this._hidden = engineMetadataService.getAttr(this, "hidden");
return this._hidden;
},
set hidden(val) {
var value = !!val;
if (value != this._hidden) {
this._hidden = value;
engineMetadataService.setAttr(this, "hidden", value);
notifyAction(this, SEARCH_ENGINE_CHANGED);
}
},
get iconURI() {
return this._iconURI;
},
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.
get _location() {
if (this._file)
return this._file.path;
if (this._uri)
return this._uri.spec;
return "";
},
// 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
get _id() {
ENSURE_WARN(this._file, "No _file for id!", Cr.NS_ERROR_FAILURE);
if (this._isInProfile)
return "[profile]/" + this._file.leafName;
if (this._isInAppDir)
return "[app]/" + this._file.leafName;
// We're not in the profile or appdir, so this must be an extension-shipped
// plugin. Use the full path.
return this._file.path;
},
get _installLocation() {
ENSURE_WARN(this._file && this._file.exists(),
"_installLocation: engine has no file!",
Cr.NS_ERROR_FAILURE);
if (this.__installLocation === null) {
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 _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
return !!(this._updateURL || this._iconUpdateURL);
},
get name() {
return this._name;
},
get type() {
return this._type;
},
get searchForm() {
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 this._searchForm;
},
get queryCharset() {
if (this._queryCharset)
return this._queryCharset;
return this._queryCharset = queryCharsetFromCode(/* get the default */);
},
// from nsISearchEngine
addParam: function SRCH_ENG_addParam(aName, aValue, aResponseType) {
ENSURE_ARG(aName && (aValue != null),
"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);
ENSURE(url, "Engine object has no URL for response type " + aResponseType,
Cr.NS_ERROR_FAILURE);
url.addParam(aName, aValue);
// Serialize the changes to file lazily
this._lazySerializeToFile();
},
// from nsISearchEngine
getSubmission: function SRCH_ENG_getSubmission(aData, aResponseType) {
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.searchForm), null);
}
LOG("getSubmission: In data: \"" + aData + "\"");
var textToSubURI = Cc["@mozilla.org/intl/texttosuburi;1"].
getService(Ci.nsITextToSubURI);
var data = "";
try {
data = textToSubURI.ConvertAndEscape(this.queryCharset, aData);
} catch (ex) {
LOG("getSubmission: Falling back to default queryCharset!");
data = textToSubURI.ConvertAndEscape(DEFAULT_QUERY_CHARSET, aData);
}
LOG("getSubmission: Out data: \"" + data + "\"");
return url.getSubmission(data, this);
},
// from nsISearchEngine
supportsResponseType: function SRCH_ENG_supportsResponseType(type) {
return (this._getURLOfType(type) != null);
},
// 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;
}
};
// nsISearchSubmission
function Submission(aURI, aPostData) {
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;
}
}
// nsIBrowserSearchService
function SearchService() {
this._init();
}
SearchService.prototype = {
_engines: { },
_sortedEngines: null,
// Whether or not we need to write the order of engines on shutdown. This
// needs to happen anytime _sortedEngines is modified after initial startup.
_needToSetOrderPrefs: false,
_init: function() {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var shouldLog = false;
try {
shouldLog = prefB.getBoolPref(BROWSER_SEARCH_PREF + "log");
} catch (ex) {}
if (shouldLog) {
// Replace the empty LOG function with the useful one
LOG = DO_LOG;
}
engineMetadataService.init();
engineUpdateService.init();
this._addObservers();
var fileLocator = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties);
var locations = fileLocator.get(NS_APP_SEARCH_DIR_LIST,
Ci.nsISimpleEnumerator);
while (locations.hasMoreElements()) {
var location = locations.getNext().QueryInterface(Ci.nsIFile);
this._loadEngines(location);
}
// Now that all engines are loaded, build the sorted engine list
this._buildSortedEngineList();
selectedEngineName = getLocalizedPref(BROWSER_SEARCH_PREF +
"selectedEngine");
this._currentEngine = this.getEngineByName(selectedEngineName) ||
this.defaultEngine;
},
_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 still loading engines from disk, and will build the
// sorted engine list when that initial loading is done.
if (this._sortedEngines) {
this._sortedEngines.push(aEngine);
this._needToSetOrderPrefs = true;
}
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);
// We need to save the engine's _dataType, if this is the first time the
// engine is added to the dataStore, since ._dataType isn't persisted
// and will change on the next startup (since the engine will then be
// XML). We need this so that we know how to load any future updates from
// this engine.
if (!engineMetadataService.getAttr(aEngine, "updatedatatype"))
engineMetadataService.setAttr(aEngine, "updatedatatype",
aEngine._dataType);
}
},
_loadEngines: function SRCH_SVC_loadEngines(aDir) {
LOG("_loadEngines: 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);
var ios = Cc["@mozilla.org/network/io-service;1"].
getService(Ci.nsIIOService);
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 = ios.newFileURI(file).QueryInterface(Ci.nsIURL);
var fileExtension = fileURL.fileExtension.toLowerCase();
var isWritable = isInProfile && file.isWritable();
var dataType;
switch (fileExtension) {
case XML_FILE_EXT:
dataType = SEARCH_DATA_XML;
break;
case SHERLOCK_FILE_EXT:
dataType = SEARCH_DATA_TEXT;
break;
default:
// Not an engine
continue;
}
var addedEngine = null;
try {
addedEngine = new Engine(file, dataType, !isWritable);
addedEngine._initFromFile();
} catch (ex) {
LOG("_loadEngines: Failed to load " + file.path + "!\n" + ex);
continue;
}
if (fileExtension == SHERLOCK_FILE_EXT) {
if (isWritable) {
try {
this._convertSherlockFile(addedEngine, fileURL.fileBaseName);
} catch (ex) {
LOG("_loadEngines: Failed to convert: " + fileURL.path + "\n" + ex);
// The engine couldn't be converted, mark it as read-only
addedEngine._readOnly = true;
}
}
// If the engine still doesn't have an icon, see if we can find one
if (!addedEngine._iconURI) {
var icon = this._findSherlockIcon(file, fileURL.fileBaseName);
if (icon)
addedEngine._iconURI = ios.newFileURI(icon);
}
}
this._addEngineToStore(addedEngine);
}
},
_saveSortedEngineList: function SRCH_SVC_saveSortedEngineList() {
// We only need to write the prefs. if something has changed.
if (!this._needToSetOrderPrefs)
return;
// Set the useDB pref to indicate that from now on we should use the order
// information stored in the database.
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
prefB.setBoolPref(BROWSER_SEARCH_PREF + "useDBForOrder", true);
var engines = this._getSortedEngines(true);
var values = [];
var names = [];
for (var i = 0; i < engines.length; ++i) {
names[i] = "order";
values[i] = i + 1;
}
engineMetadataService.setAttrs(engines, names, values);
},
_buildSortedEngineList: function SRCH_SVC_buildSortedEngineList() {
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 (getBoolPref(BROWSER_SEARCH_PREF + "useDBForOrder", false)) {
for each (engine in this._engines) {
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. This problem will sort itself out when we call
// _saveSortedEngineList at shutdown.
if (orderNumber && !this._sortedEngines[orderNumber-1]) {
this._sortedEngines[orderNumber-1] = engine;
addedEngines[engine.name] = engine;
} else {
// We need to call _saveSortedEngines so this gets sorted out.
this._needToSetOrderPrefs = 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)
this._needToSetOrderPrefs = true;
this._sortedEngines = filteredEngines;
} 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 prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var extras =
prefB.getChildList(BROWSER_SEARCH_PREF + "order.extra.", { });
for each (prefName in extras) {
engineName = prefB.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
var alphaEngines = [];
for each (engine in this._engines) {
if (!(engine.name in addedEngines))
alphaEngines.push(this._engines[engine.name]);
}
alphaEngines = alphaEngines.sort(function (a, b) {
return a.name.localeCompare(b.name);
});
this._sortedEngines = this._sortedEngines.concat(alphaEngines);
},
/**
* Converts a Sherlock file and its icon into the custom XML format used by
* the Search Service. Saves the engine's icon (if present) into the XML as a
* data: URI and changes the extension of the source file from ".src" to
* ".xml". The engine data is then written to the file as XML.
* @param aEngine
* The Engine object that needs to be converted.
* @param aBaseName
* The basename of the Sherlock file.
* Example: "foo" for file "foo.src".
*
* @throws NS_ERROR_FAILURE if the file could not be converted.
*
* @see nsIURL::fileBaseName
*/
_convertSherlockFile: function SRCH_SVC_convertSherlock(aEngine, aBaseName) {
var oldSherlockFile = aEngine._file;
// Back up the old file
try {
var backupDir = oldSherlockFile.parent;
backupDir.append("searchplugins-backup");
if (!backupDir.exists())
backupDir.create(Ci.nsIFile.DIRECTORY_TYPE, PERMS_DIRECTORY);
oldSherlockFile.copyTo(backupDir, null);
} catch (ex) {
// Just bail. Engines that can't be backed up won't be converted, but
// engines that aren't converted are loaded as readonly.
LOG("_convertSherlockFile: Couldn't back up " + oldSherlockFile.path +
":\n" + ex);
throw Cr.NS_ERROR_FAILURE;
}
// Rename the file, but don't clobber existing files
var newXMLFile = oldSherlockFile.parent.clone();
newXMLFile.append(aBaseName + "." + XML_FILE_EXT);
if (newXMLFile.exists()) {
// There is an existing file with this name, create a unique file
newXMLFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, PERMS_FILE);
}
// Rename the .src file to .xml
oldSherlockFile.moveTo(null, newXMLFile.leafName);
aEngine._file = newXMLFile;
// Write the converted engine to disk
aEngine._serializeToFile();
// Update the engine's _type.
aEngine._type = SEARCH_TYPE_MOZSEARCH;
// See if it has a corresponding icon
try {
var icon = this._findSherlockIcon(aEngine._file, aBaseName);
if (icon && icon.fileSize < MAX_ICON_SIZE) {
// Use this as the engine's icon
var bStream = Cc["@mozilla.org/binaryinputstream;1"].
createInstance(Ci.nsIBinaryInputStream);
var fileInStream = Cc["@mozilla.org/network/file-input-stream;1"].
createInstance(Ci.nsIFileInputStream);
fileInStream.init(icon, MODE_RDONLY, PERMS_FILE, 0);
bStream.setInputStream(fileInStream);
var bytes = [];
while (bStream.available() != 0)
bytes = bytes.concat(bStream.readByteArray(bStream.available()));
bStream.close();
// Convert the byte array to a base64-encoded string
var str = btoa(String.fromCharCode.apply(null, bytes));
aEngine._iconURI = makeURI(ICON_DATAURL_PREFIX + str);
LOG("_importSherlockEngine: Set sherlock iconURI to: \"" +
aEngine._iconURL + "\"");
// Write the engine to disk to save changes
aEngine._serializeToFile();
// Delete the icon now that we're sure everything's been saved
icon.remove(false);
}
} catch (ex) { LOG("_convertSherlockFile: Error setting icon:\n" + ex); }
},
/**
* Finds an icon associated to a given Sherlock file. Searches the provided
* file's parent directory looking for files with the same base name and one
* of the file extensions in SHERLOCK_ICON_EXTENSIONS.
* @param aEngineFile
* The Sherlock plugin file.
* @param aBaseName
* The basename of the Sherlock file.
* Example: "foo" for file "foo.src".
* @see nsIURL::fileBaseName
*/
_findSherlockIcon: function SRCH_SVC_findSherlock(aEngineFile, aBaseName) {
for (var i = 0; i < SHERLOCK_ICON_EXTENSIONS.length; i++) {
var icon = aEngineFile.parent.clone();
icon.append(aBaseName + SHERLOCK_ICON_EXTENSIONS[i]);
if (icon.exists() && icon.isFile())
return icon;
}
return null;
},
/**
* 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
getEngines: function SRCH_SVC_getEngines(aCount) {
LOG("getEngines: getting all engines");
var engines = this._getSortedEngines(true);
aCount.value = engines.length;
return engines;
},
getVisibleEngines: function SRCH_SVC_getVisible(aCount) {
LOG("getVisibleEngines: getting all visible engines");
var engines = this._getSortedEngines(false);
aCount.value = engines.length;
return engines;
},
getDefaultEngines: function SRCH_SVC_getDefault(aCount) {
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 prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var extras = prefB.getChildList(BROWSER_SEARCH_PREF + "order.extra.",
{});
for each (var prefName in extras) {
engineName = prefB.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) {
return this._engines[aEngineName] || null;
},
getEngineByAlias: function SRCH_SVC_getEngineByAlias(aAlias) {
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) {
ENSURE_ARG(aName, "Invalid name passed to addEngineWithDetails!");
ENSURE_ARG(aMethod, "Invalid method passed to addEngineWithDetails!");
ENSURE_ARG(aTemplate, "Invalid template passed to addEngineWithDetails!");
ENSURE(!this._engines[aName], "An engine with that name already exists!",
Cr.NS_ERROR_FILE_ALREADY_EXISTS);
var engine = new Engine(getSanitizedFile(aName), SEARCH_DATA_XML, false);
engine._initFromMetadata(aName, aIconURL, aAlias, aDescription,
aMethod, aTemplate);
this._addEngineToStore(engine);
},
addEngine: function SRCH_SVC_addEngine(aEngineURL, aDataType, aIconURL,
aConfirm) {
LOG("addEngine: Adding \"" + aEngineURL + "\".");
try {
var uri = makeURI(aEngineURL);
var engine = new Engine(uri, aDataType, false);
engine._initFromURI();
} catch (ex) {
LOG("addEngine: Error adding engine:\n" + ex);
throw Cr.NS_ERROR_FAILURE;
}
engine._setIcon(aIconURL, false);
engine._confirm = aConfirm;
},
removeEngine: function SRCH_SVC_removeEngine(aEngine) {
ENSURE_ARG(aEngine, "no engine passed to removeEngine!");
var engineToRemove = null;
for (var e in this._engines)
if (aEngine.wrappedJSObject == this._engines[e])
engineToRemove = this._engines[e];
ENSURE(engineToRemove, "removeEngine: Can't find engine to remove!",
Cr.NS_ERROR_FILE_NOT_FOUND);
if (engineToRemove == this.currentEngine)
this._currentEngine = 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 lazy serialization timer if it's running
if (engineToRemove._serializeTimer) {
engineToRemove._serializeTimer.cancel();
engineToRemove._serializeTimer = 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);
ENSURE(index != -1, "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._needToSetOrderPrefs = true;
}
},
moveEngine: function SRCH_SVC_moveEngine(aEngine, aNewIndex) {
ENSURE_ARG((aNewIndex < this._sortedEngines.length) && (aNewIndex >= 0),
"SRCH_SVC_moveEngine: Index out of bounds!");
ENSURE_ARG(aEngine instanceof Ci.nsISearchEngine,
"SRCH_SVC_moveEngine: Invalid engine passed to moveEngine!");
ENSURE(!aEngine.hidden, "moveEngine: Can't move a hidden engine!",
Cr.NS_ERROR_FAILURE);
var engine = aEngine.wrappedJSObject;
var currentIndex = this._sortedEngines.indexOf(engine);
ENSURE(currentIndex != -1, "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];
ENSURE(newIndexEngine, "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._needToSetOrderPrefs = true;
},
restoreDefaultEngines: function SRCH_SVC_resetDefaultEngines() {
for each (var e in this._engines) {
// Unhide all default engines
if (e.hidden && e._isDefault)
e.hidden = false;
}
},
get defaultEngine() {
const defPref = BROWSER_SEARCH_PREF + "defaultenginename";
// Get the default engine - this pref should always exist, but the engine
// might be hidden
this._defaultEngine = this.getEngineByName(getLocalizedPref(defPref, ""));
if (!this._defaultEngine || this._defaultEngine.hidden)
this._defaultEngine = this._getSortedEngines(false)[0] || null;
return this._defaultEngine;
},
get currentEngine() {
if (!this._currentEngine || this._currentEngine.hidden)
this._currentEngine = this.defaultEngine;
return this._currentEngine;
},
set currentEngine(val) {
ENSURE_ARG(val instanceof Ci.nsISearchEngine,
"Invalid argument passed to currentEngine setter");
var newCurrentEngine = this.getEngineByName(val.name);
ENSURE(newCurrentEngine, "Can't find engine in store!",
Cr.NS_ERROR_UNEXPECTED);
this._currentEngine = newCurrentEngine;
var currentEnginePref = BROWSER_SEARCH_PREF + "selectedEngine";
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefService).QueryInterface(Ci.nsIPrefBranch);
if (this._currentEngine == this.defaultEngine) {
if (prefB.prefHasUserValue(currentEnginePref))
prefB.clearUserPref(currentEnginePref);
}
else {
setLocalizedPref(currentEnginePref, this._currentEngine.name);
}
notifyAction(this._currentEngine, SEARCH_ENGINE_CURRENT);
},
// nsIObserver
observe: function SRCH_SVC_observe(aEngine, aTopic, aVerb) {
switch (aTopic) {
case SEARCH_ENGINE_TOPIC:
if (aVerb == 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;
}
}
break;
case QUIT_APPLICATION_TOPIC:
this._removeObservers();
this._saveSortedEngineList();
break;
}
},
_addObservers: function SRCH_SVC_addObservers() {
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
os.addObserver(this, SEARCH_ENGINE_TOPIC, false);
os.addObserver(this, QUIT_APPLICATION_TOPIC, false);
},
_removeObservers: function SRCH_SVC_removeObservers() {
var os = Cc["@mozilla.org/observer-service;1"].
getService(Ci.nsIObserverService);
os.removeObserver(this, SEARCH_ENGINE_TOPIC);
os.removeObserver(this, QUIT_APPLICATION_TOPIC);
},
QueryInterface: function SRCH_SVC_QI(aIID) {
if (aIID.equals(Ci.nsIBrowserSearchService) ||
aIID.equals(Ci.nsIObserver) ||
aIID.equals(Ci.nsISupports))
return this;
throw Cr.NS_ERROR_NO_INTERFACE;
}
};
var engineMetadataService = {
init: function epsInit() {
var engineDataTable = "id INTEGER PRIMARY KEY, engineid STRING, name STRING, value STRING";
var file = getDir(NS_APP_USER_PROFILE_50_DIR);
file.append("search.sqlite");
var dbService = Cc["@mozilla.org/storage/service;1"].
getService(Ci.mozIStorageService);
try {
this.mDB = dbService.openDatabase(file);
} catch (ex) {
if (ex.result == 0x8052000b) { /* NS_ERROR_FILE_CORRUPTED */
// delete and try again
file.remove(false);
this.mDB = dbService.openDatabase(file);
} else {
throw ex;
}
}
try {
this.mDB.createTable("engine_data", engineDataTable);
} catch (ex) {
// Fails if the table already exists, which is fine
}
this.mGetData = createStatement (
this.mDB,
"SELECT value FROM engine_data WHERE engineid = :engineid AND name = :name");
this.mDeleteData = createStatement (
this.mDB,
"DELETE FROM engine_data WHERE engineid = :engineid AND name = :name");
this.mInsertData = createStatement (
this.mDB,
"INSERT INTO engine_data (engineid, name, value) " +
"VALUES (:engineid, :name, :value)");
},
getAttr: function epsGetAttr(engine, name) {
// attr names must be lower case
name = name.toLowerCase();
var stmt = this.mGetData;
stmt.reset();
var pp = stmt.params;
pp.engineid = engine._id;
pp.name = name;
var value = null;
if (stmt.step())
value = stmt.row.value;
stmt.reset();
return value;
},
setAttr: function epsSetAttr(engine, name, value) {
// attr names must be lower case
name = name.toLowerCase();
this.mDB.beginTransaction();
var pp = this.mDeleteData.params;
pp.engineid = engine._id;
pp.name = name;
this.mDeleteData.step();
this.mDeleteData.reset();
pp = this.mInsertData.params;
pp.engineid = engine._id;
pp.name = name;
pp.value = value;
this.mInsertData.step();
this.mInsertData.reset();
this.mDB.commitTransaction();
},
setAttrs: function epsSetAttrs(engines, names, values) {
this.mDB.beginTransaction();
for (var i = 0; i < engines.length; i++) {
// attr names must be lower case
var name = names[i].toLowerCase();
var pp = this.mDeleteData.params;
pp.engineid = engines[i]._id;
pp.name = names[i];
this.mDeleteData.step();
this.mDeleteData.reset();
pp = this.mInsertData.params;
pp.engineid = engines[i]._id;
pp.name = names[i];
pp.value = values[i];
this.mInsertData.step();
this.mInsertData.reset();
}
this.mDB.commitTransaction();
},
deleteEngineData: function epsDelData(engine, name) {
// attr names must be lower case
name = name.toLowerCase();
var pp = this.mDeleteData.params;
pp.engineid = engine._id;
pp.name = name;
this.mDeleteData.step();
this.mDeleteData.reset();
}
}
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) {
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var shouldLog = false;
try {
shouldLog = prefB.getBoolPref(BROWSER_SEARCH_PREF + "update.log");
} catch (ex) {}
if (shouldLog) {
dump(SEARCH_UPDATE_LOG_PREFIX + aText + "\n");
var consoleService = Cc["@mozilla.org/consoleservice;1"].
getService(Ci.nsIConsoleService);
consoleService.logStringMessage(aText);
}
}
var engineUpdateService = {
init: function eus_init() {
var tm = Cc["@mozilla.org/updates/timer-manager;1"].
getService(Ci.nsIUpdateTimerManager);
// figure out how often to check for any expired engines
var prefB = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
var interval = prefB.getIntPref(BROWSER_SEARCH_PREF + "updateinterval");
// Interval is stored in hours
var seconds = interval * 3600;
tm.registerTimer("search-engine-update-timer", engineUpdateService,
seconds);
},
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);
},
notify: function eus_Notify(aTimer) {
ULOG("notify called");
if (!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 searchService = Cc["@mozilla.org/browser/search-service;1"].
getService(Ci.nsIBrowserSearchService);
var currentTime = Date.now();
ULOG("currentTime: " + currentTime);
for each (engine in searchService.getEngines({})) {
engine = engine.wrappedJSObject;
if (!engine._hasUpdates || engine._readOnly)
continue;
ULOG("checking " + engine.name);
var expirTime = engineMetadataService.getAttr(engine, "updateexpir");
var updateURL = engine._updateURL;
var iconUpdateURL = engine._iconUpdateURL;
ULOG("expirTime: " + expirTime + "\nupdateURL: " + updateURL +
"\niconUpdateURL: " + iconUpdateURL);
var engineExpired = expirTime <= currentTime;
if (!expirTime || !engineExpired) {
ULOG("skipping engine");
continue;
}
ULOG(engine.name + " has expired");
var testEngine = null;
var updateURI = makeURI(updateURL);
if (updateURI) {
var dataType = engineMetadataService.getAttr(engine, "updatedatatype")
if (!dataType) {
ULOG("No loadtype to update engine!");
continue;
}
testEngine = new Engine(updateURI, dataType, false);
testEngine._engineToUpdate = engine;
testEngine._initFromURI();
} else
ULOG("invalid updateURI");
if (iconUpdateURL) {
// If we're updating the engine too, use the new engine object,
// otherwise use the existing engine object.
(testEngine || engine)._setIcon(iconUpdateURL, true);
}
// Schedule the next update
this.scheduleNextUpdate(engine);
} // end engine iteration
}
};
const kClassID = Components.ID("{7319788a-fe93-4db3-9f39-818cf08f4256}");
const kClassName = "Browser Search Service";
const kContractID = "@mozilla.org/browser/search-service;1";
// nsIFactory
const kFactory = {
createInstance: function (outer, iid) {
if (outer != null)
throw Cr.NS_ERROR_NO_AGGREGATION;
return (new SearchService()).QueryInterface(iid);
}
};
// nsIModule
const gModule = {
registerSelf: function (componentManager, fileSpec, location, type) {
componentManager.QueryInterface(Ci.nsIComponentRegistrar);
componentManager.registerFactoryLocation(kClassID,
kClassName,
kContractID,
fileSpec, location, type);
},
unregisterSelf: function(componentManager, fileSpec, location) {
componentManager.QueryInterface(Ci.nsIComponentRegistrar);
componentManager.unregisterFactoryLocation(kClassID, fileSpec);
},
getClassObject: function (componentManager, cid, iid) {
if (!cid.equals(kClassID))
throw Cr.NS_ERROR_NO_INTERFACE;
if (!iid.equals(Ci.nsIFactory))
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
return kFactory;
},
canUnload: function (componentManager) {
return true;
}
};
function NSGetModule(componentManager, fileSpec) {
return gModule;
}
#include ../../../toolkit/content/debug.js
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