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storage-Legacy.js
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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 mozilla.org code.
*
* The Initial Developer of the Original Code is Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Justin Dolske <dolske@mozilla.com> (original author)
*
* 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 Cc = Components.classes;
const Ci = Components.interfaces;
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
function LoginManagerStorage_legacy() { };
LoginManagerStorage_legacy.prototype = {
classDescription : "LoginManagerStorage_legacy",
contractID : "@mozilla.org/login-manager/storage/legacy;1",
classID : Components.ID("{e09e4ca6-276b-4bb4-8b71-0635a3a2a007}"),
QueryInterface : XPCOMUtils.generateQI([Ci.nsILoginManagerStorage]),
__logService : null, // Console logging service, used for debugging.
get _logService() {
if (!this.__logService)
this.__logService = Cc["@mozilla.org/consoleservice;1"].
getService(Ci.nsIConsoleService);
return this.__logService;
},
__decoderRing : null, // nsSecretDecoderRing service
get _decoderRing() {
if (!this.__decoderRing)
this.__decoderRing = Cc["@mozilla.org/security/sdr;1"].
getService(Ci.nsISecretDecoderRing);
return this.__decoderRing;
},
_prefBranch : null, // Preferences service
_signonsFile : null, // nsIFile for "signons2.txt" (or whatever pref is)
_debug : false, // mirrors signon.debug
/*
* Core datastructures
*
* EG: _logins["http://site.com"][0].password
* EG: _disabledHosts["never.site.com"]
*/
_logins : null,
_disabledHosts : null,
/*
* log
*
* Internal function for logging debug messages to the Error Console.
*/
log : function (message) {
if (!this._debug)
return;
dump("PwMgr Storage: " + message + "\n");
this._logService.logStringMessage("PwMgr Storage: " + message);
},
/* ==================== Public Methods ==================== */
initWithFile : function(aInputFile, aOutputFile) {
this._signonsFile = aInputFile;
this.init();
if (aOutputFile) {
this._signonsFile = aOutputFile;
this._writeFile();
}
},
/*
* init
*
* Initialize this storage component and load stored passwords from disk.
*/
init : function () {
this._logins = {};
this._disabledHosts = {};
// Connect to the correct preferences branch.
this._prefBranch = Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefService);
this._prefBranch = this._prefBranch.getBranch("signon.");
this._prefBranch.QueryInterface(Ci.nsIPrefBranch2);
this._debug = this._prefBranch.getBoolPref("debug");
// Check to see if the internal PKCS#11 token has been initialized.
// If not, set a blank password.
var tokenDB = Cc["@mozilla.org/security/pk11tokendb;1"]
.getService(Ci.nsIPK11TokenDB);
var token = tokenDB.getInternalKeyToken();
if (token.needsUserInit) {
this.log("Initializing key3.db with default blank password.");
token.initPassword("");
}
var importFile = null;
// If initWithFile is calling us, _signonsFile is already set.
if (!this._signonsFile)
[this._signonsFile, importFile] = this._getSignonsFile();
// If we have an import file, do a switcharoo before reading it.
if (importFile) {
this.log("Importing " + importFile.path);
var tmp = this._signonsFile;
this._signonsFile = importFile;
}
// Read in the stored login data.
this._readFile()
// If we were importing, write back to the normal file.
if (importFile) {
this._signonsFile = tmp;
this._writeFile();
}
},
/*
* addLogin
*
*/
addLogin : function (login) {
// We rely on using login.wrappedJSObject. addLogin is the
// only entry point where we might get a nsLoginInfo object
// that wasn't created by us (and so might not be a JS
// implementation being wrapped)
if (!login.wrappedJSObject) {
var clone = Cc["@mozilla.org/login-manager/loginInfo;1"].
createInstance(Ci.nsILoginInfo);
clone.init(login.hostname, login.formSubmitURL, login.httpRealm,
login.username, login.password,
login.usernameField, login.passwordField);
login = clone;
}
var key = login.hostname;
// If first entry for key, create an Array to hold it's logins.
if (!this._logins[key])
this._logins[key] = [];
this._logins[key].push(login);
this._writeFile();
},
/*
* removeLogin
*
*/
removeLogin : function (login) {
var key = login.hostname;
var logins = this._logins[key];
if (!logins)
throw "No logins found for hostname (" + key + ")";
// The specified login isn't encrypted, so we need to ensure
// the logins we're comparing with are decrypted.
this._decryptLogins(logins);
for (var i = 0; i < logins.length; i++) {
if (logins[i].equals(login)) {
logins.splice(i, 1); // delete that login from array.
break;
// Note that if there are duplicate entries, they'll
// have to be deleted one-by-one.
}
}
// Did we delete all the logins for this host?
if (logins.length == 0)
delete this._logins[key];
this._writeFile();
},
/*
* modifyLogin
*
*/
modifyLogin : function (oldLogin, newLogin) {
this.removeLogin(oldLogin);
this.addLogin(newLogin);
},
/*
* getAllLogins
*
* Returns an array of nsAccountInfo.
*/
getAllLogins : function (count) {
var result = [], userCanceled;
// Each entry is an array -- append the array entries to |result|.
for each (var hostLogins in this._logins) {
result = result.concat(hostLogins);
}
// decrypt entries for caller.
[result, userCanceled] = this._decryptLogins(result);
count.value = result.length; // needed for XPCOM
return result;
},
/*
* removeAllLogins
*
* Removes all logins from storage.
*/
removeAllLogins : function () {
this._logins = {};
// Disabled hosts kept, as one presumably doesn't want to erase those.
this._writeFile();
},
/*
* getAllDisabledHosts
*
*/
getAllDisabledHosts : function (count) {
var result = [];
for (var hostname in this._disabledHosts) {
result.push(hostname);
}
count.value = result.length; // needed for XPCOM
return result;
},
/*
* getLoginSavingEnabled
*
*/
getLoginSavingEnabled : function (hostname) {
return !this._disabledHosts[hostname];
},
/*
* setLoginSavingEnabled
*
*/
setLoginSavingEnabled : function (hostname, enabled) {
if (enabled)
delete this._disabledHosts[hostname];
else
this._disabledHosts[hostname] = true;
this._writeFile();
},
/*
* findLogins
*
*/
findLogins : function (count, hostname, formSubmitURL, httpRealm) {
var hostLogins = this._logins[hostname];
if (hostLogins == null) {
count.value = 0;
return [];
}
var result = [], userCanceled;
for each (var login in hostLogins) {
// If looking for an HTTP login, make sure the httpRealms match.
if (httpRealm != login.httpRealm)
continue;
// If looking for a form login, make sure the action URLs match
// ...unless the stored login is blank (not null), which means
// login was stored before we started keeping the action URL.
if (formSubmitURL != login.formSubmitURL &&
login.formSubmitURL != "")
continue;
result.push(login);
}
// Decrypt entries found for the caller.
[result, userCanceled] = this._decryptLogins(result);
// We want to throw in this case, so that the Login Manager
// knows to stop processing forms on the page so the user isn't
// prompted multiple times.
if (userCanceled)
throw "User canceled Master Password entry";
count.value = result.length; // needed for XPCOM
return result;
},
/* ==================== Internal Methods ==================== */
/*
* _getSignonsFile
*
* Determines what file to use based on prefs. Returns it as a
* nsILocalFile, along with a file to import from first (if needed)
*
*/
_getSignonsFile : function() {
var importFile = null;
// Get the location of the user's profile.
var DIR_SERVICE = new Components.Constructor(
"@mozilla.org/file/directory_service;1", "nsIProperties");
var pathname = (new DIR_SERVICE()).get("ProfD", Ci.nsIFile).path;
// First try the default pref...
var filename = this._prefBranch.getCharPref("SignonFileName2");
var file = Cc["@mozilla.org/file/local;1"].
createInstance(Ci.nsILocalFile);
file.initWithPath(pathname);
file.append(filename);
if (!file.exists()) {
this.log("SignonFilename2 file does not exist. file=" +
filename + ", path=" + pathname);
// Then try the old pref...
var oldname = this._prefBranch.getCharPref("SignonFileName");
importFile = Cc["@mozilla.org/file/local;1"].
createInstance(Ci.nsILocalFile);
importFile.initWithPath(pathname);
importFile.append(oldname);
if (!importFile.exists()) {
this.log("SignonFilename1 file does not exist. file=" +
oldname + ", path=" + pathname);
importFile = null;
}
}
return [file, importFile];
},
/*
* _readFile
*
*/
_readFile : function () {
var oldFormat = false;
this.log("Reading passwords from " + this._signonsFile.path);
// If it doesn't exist, just create an empty file and bail out.
if (!this._signonsFile.exists()) {
this.log("Creating new signons file...");
this._writeFile();
return;
}
var inputStream = Cc["@mozilla.org/network/file-input-stream;1"]
.createInstance(Ci.nsIFileInputStream);
// init the stream as RD_ONLY, -1 == default permissions.
inputStream.init(this._signonsFile, 0x01, -1, null);
var lineStream = inputStream.QueryInterface(Ci.nsILineInputStream);
var line = { value: "" };
const STATE = { HEADER : 0, REJECT : 1, REALM : 2,
USERFIELD : 3, USERVALUE : 4,
PASSFIELD : 5, PASSVALUE : 6, ACTIONURL : 7 };
var parseState = STATE.HEADER;
var nsLoginInfo = new Components.Constructor(
"@mozilla.org/login-manager/loginInfo;1", Ci.nsILoginInfo);
var processEntry = false;
do {
var hasMore = lineStream.readLine(line);
switch (parseState) {
// Check file header
case STATE.HEADER:
if (line.value == "#2c") {
oldFormat = true;
} else if (line.value != "#2d") {
this.log("invalid file header (" + line.value + ")");
throw "invalid file header in signons file";
// We could disable later writing to file, so we
// don't clobber whatever it is. ...however, that
// would mean corrupt files are not self-healing.
return;
}
parseState++;
break;
// Line is a hostname for which passwords should never be saved.
case STATE.REJECT:
if (line.value == ".") {
parseState++;
break;
}
this._disabledHosts[line.value] = true;
break;
// Line is a hostname, saved login(s) will follow
case STATE.REALM:
var hostrealm = line.value;
// Format is "http://site.com", with "(some realm)"
// appended if it's a HTTP-Auth login.
const realmFormat = /^(.+?)( \(.*\))?$/; // XXX .* or .+?
var matches = realmFormat.exec(hostrealm);
var hostname, httpRealm;
if (matches && matches.length == 3) {
hostname = matches[1];
httpRealm = matches[2] ?
matches[2].slice(2, -1) : null;
} else {
if (hostrealm != "") {
// Uhoh. This shouldn't happen, but try to deal.
this.log("Error parsing host/realm: " + hostrealm);
}
hostname = hostrealm;
httpRealm = null;
}
parseState++;
break;
// Line is the HTML 'name' attribute for the username field
// (or "." to indicate end of hostrealm)
case STATE.USERFIELD:
if (line.value == ".") {
parseState = STATE.REALM;
break;
}
var entry = new nsLoginInfo();
entry.hostname = hostname;
entry.httpRealm = httpRealm;
entry.usernameField = line.value;
parseState++;
break;
// Line is a username
case STATE.USERVALUE:
entry.wrappedJSObject.encryptedUsername = line.value;
parseState++;
break;
// Line is the HTML 'name' attribute for the password field,
// with a leading '*' character
case STATE.PASSFIELD:
entry.passwordField = line.value.substr(1);
parseState++;
break;
// Line is a password
case STATE.PASSVALUE:
entry.wrappedJSObject.encryptedPassword = line.value;
if (oldFormat) {
entry.formSubmitURL = "";
processEntry = true;
parseState = STATE.USERFIELD;
} else {
parseState++;
}
break;
// Line is the action URL
case STATE.ACTIONURL:
entry.formSubmitURL = line.value;
processEntry = true;
parseState = STATE.USERFIELD;
break;
}
if (processEntry) {
if (!this._logins[hostname])
this._logins[hostname] = [];
this._logins[hostname].push(entry);
entry = null;
processEntry = false;
}
} while (hasMore);
lineStream.close();
return;
},
/*
* _writeFile
*
*/
_writeFile : function () {
function writeLine(data) {
data += "\r\n";
outputStream.write(data, data.length);
}
this.log("Writing passwords to " + this._signonsFile.path);
var outputStream = Cc["@mozilla.org/network/safe-file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
outputStream.QueryInterface(Ci.nsISafeOutputStream);
// WR_ONLY|CREAT|TRUNC
outputStream.init(this._signonsFile, 0x02 | 0x08 | 0x20, 0600, null);
// write file version header
writeLine("#2d");
// write disabled logins list
for (var hostname in this._disabledHosts) {
writeLine(hostname);
}
// write end-of-reject-list marker
writeLine(".");
for (var hostname in this._logins) {
function sortByRealm(a,b) {
a = a.httpRealm;
b = b.httpRealm;
if (!a && !b)
return 0;
if (!a || a < b)
return -1;
if (!b || b > a)
return 1;
return 0; // a==b, neither is null
}
// Sort logins by httpRealm. This allows us to group multiple
// logins for the same realm together.
this._logins[hostname].sort(sortByRealm);
// write each login known for the host
var lastRealm = null;
var firstEntry = true;
var userCanceled = false;
for each (var login in this._logins[hostname]) {
// If this login is for a new realm, start a new entry.
if (login.httpRealm != lastRealm || firstEntry) {
// end previous entry, if needed.
if (!firstEntry)
writeLine(".");
var hostrealm = login.hostname;
if (login.httpRealm)
hostrealm += " (" + login.httpRealm + ")";
writeLine(hostrealm);
}
firstEntry = false;
// Get the encrypted value of the username. Newly added
// logins will need the plaintext value encrypted.
var encUsername = login.wrappedJSObject.encryptedUsername;
if (!encUsername) {
[encUsername, userCanceled] = this._encrypt(login.username);
login.wrappedJSObject.encryptedUsername = encUsername;
}
if (userCanceled)
break;
// Get the encrypted value of the password. Newly added
// logins will need the plaintext value encrypted.
var encPassword = login.wrappedJSObject.encryptedPassword;
if (!encPassword) {
[encPassword, userCanceled] = this._encrypt(login.password);
login.wrappedJSObject.encryptedPassword = encPassword;
}
if (userCanceled)
break;
writeLine((login.usernameField ? login.usernameField : ""));
writeLine(encUsername);
writeLine("*" +
(login.passwordField ? login.passwordField : ""));
writeLine(encPassword);
writeLine((login.formSubmitURL ? login.formSubmitURL : ""));
lastRealm = login.httpRealm;
}
if (userCanceled) {
this.log("User canceled Master Password, aborting write.");
// .close will cause an abort w/o modifying original file
outputStream.close();
return;
}
// write end-of-host marker
writeLine(".");
}
// [if there were no hosts, no end-of-host marker (".") needed]
outputStream.finish();
},
/*
* _decryptLogins
*
* Decrypts username and password fields in the provided array of
* logins. This is deferred from the _readFile() code, so that
* the user is not prompted for a master password (if set) until
* the entries are actually used.
*
* The entries specified by the array will be decrypted, if possible.
* An array of successfully decrypted logins will be returned. The return
* value should be given to external callers (since still-encrypted
* entries are useless), whereas internal callers generally don't want
* to lose unencrypted entries (eg, because the user clicked Cancel
* instead of entering their master password)
*/
_decryptLogins : function (logins) {
var result = [], userCanceled = false;
for each (var login in logins) {
if (!login.username)
[login.username, userCanceled] =
this._decrypt(login.wrappedJSObject.encryptedUsername);
if (userCanceled)
break;
if (!login.password)
[login.password, userCanceled] =
this._decrypt(login.wrappedJSObject.encryptedPassword);
// Probably can't hit this case, but for completeness...
if (userCanceled)
break;
// If decryption failed (corrupt entry?) skip it.
// XXX remove it from the original list entirely?
if (!login.username || !login.password)
continue;
// Force any old mime64-obscured entries to be reencrypted.
if (login.wrappedJSObject.encryptedUsername &&
login.wrappedJSObject.encryptedUsername.charAt(0) == '~')
login.wrappedJSObject.encryptedUsername = null;
if (login.wrappedJSObject.encryptedPassword &&
login.wrappedJSObject.encryptedPassword.charAt(0) == '~')
login.wrappedJSObject.encryptedPassword = null;
result.push(login);
}
return [result, userCanceled];
},
/*
* _encrypt
*
* Encrypts the specified string, using the SecretDecoderRing.
*
* Returns [cipherText, userCanceled] where:
* cipherText -- the encrypted string, or null if it failed.
* userCanceled -- if the encryption failed, this is true if the
* user selected Cancel when prompted to enter their
* Master Password. The caller should bail out, and not
* not request that more things be encrypted (which
* results in prompting the user for a Master Password
* over and over.)
*/
_encrypt : function (plainText) {
var cipherText = null, userCanceled = false;
try {
var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
createInstance(Ci.nsIScriptableUnicodeConverter);
converter.charset = "UTF-8";
var plainOctet = converter.ConvertFromUnicode(plainText);
plainOctet += converter.Finish();
cipherText = this._decoderRing.encryptString(plainOctet);
} catch (e) {
this.log("Failed to encrypt string. (" + e.name + ")");
if (e.result == Components.results.NS_ERROR_NOT_AVAILABLE)
userCanceled = true;
}
return [cipherText, userCanceled];
},
/*
* _decrypt
*
* Decrypts the specified string, using the SecretDecoderRing.
*
* Returns [plainText, userCanceled] where:
* plainText -- the decrypted string, or null if it failed.
* userCanceled -- if the decryption failed, this is true if the
* user selected Cancel when prompted to enter their
* Master Password. The caller should bail out, and not
* not request that more things be decrypted (which
* results in prompting the user for a Master Password
* over and over.)
*/
_decrypt : function (cipherText) {
var plainText = null, userCanceled = false;
try {
var plainOctet;
if (cipherText.charAt(0) == '~') {
// The older file format obscured entries by
// base64-encoding them. These entries are signaled by a
// leading '~' character.
plainOctet = atob(cipherText.substring(1));
} else {
plainOctet = this._decoderRing.decryptString(cipherText);
}
var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
.createInstance(Ci.nsIScriptableUnicodeConverter);
converter.charset = "UTF-8";
plainText = converter.ConvertToUnicode(plainOctet);
} catch (e) {
this.log("Failed to decrypt string: " + cipherText +
" (" + e.name + ")");
// If the user clicks Cancel, we get NS_ERROR_NOT_AVAILABLE.
// If the cipherText is bad / wrong key, we get NS_ERROR_FAILURE
// Wrong passwords are handled by the decoderRing reprompting;
// we get no notification.
if (e.result == Components.results.NS_ERROR_NOT_AVAILABLE)
userCanceled = true;
}
return [plainText, userCanceled];
},
}; // end of nsLoginManagerStorage_legacy implementation
var component = [LoginManagerStorage_legacy];
function NSGetModule(compMgr, fileSpec) {
return XPCOMUtils.generateModule(component);
}