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https-everywhere.js
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926 lines (789 loc) · 33.6 KB
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// LOG LEVELS ---
VERB=1;
DBUG=2;
INFO=3;
NOTE=4;
WARN=5;
// PREFERENCE BRANCHES
PREFBRANCH_ROOT=0;
PREFBRANCH_RULE_TOGGLE=1;
//---------------
https_domains = {}; // maps domain patterns (with at most one
// wildcard) to RuleSets
https_everywhere_blacklist = {}; // URLs we've given up on rewriting because
// of redirection loops
https_blacklist_domains = {}; // domains for which there is at least one
// blacklisted URL
//
const CI = Components.interfaces;
const CC = Components.classes;
const CU = Components.utils;
const CR = Components.results;
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cu = Components.utils;
const Cr = Components.results;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/FileUtils.jsm");
const CP_SHOULDPROCESS = 4;
const SERVICE_CTRID = "@eff.org/https-everywhere;1";
const SERVICE_ID=Components.ID("{32c165b4-fe5e-4964-9250-603c410631b4}");
const SERVICE_NAME = "Encrypts your communications with a number of major websites";
const LLVAR = "LogLevel";
const IOS = CC["@mozilla.org/network/io-service;1"].getService(CI.nsIIOService);
const OS = CC['@mozilla.org/observer-service;1'].getService(CI.nsIObserverService);
const LOADER = CC["@mozilla.org/moz/jssubscript-loader;1"].getService(CI.mozIJSSubScriptLoader);
const _INCLUDED = {};
// NoScript uses this blob to include js constructs that stored in the chrome/
// directory, but are not attached to the Firefox UI (normally, js located
// there is attached to an Overlay and therefore is part of the UI).
// Reasons for this: things in components/ directory cannot be split into
// separate files; things in chrome/ can be
const INCLUDE = function(name) {
if (arguments.length > 1)
for (var j = 0, len = arguments.length; j < len; j++)
INCLUDE(arguments[j]);
else if (!_INCLUDED[name]) {
// we used to try/catch here, but that was less useful because it didn't
// produce line numbers for syntax errors
LOADER.loadSubScript("chrome://https-everywhere/content/code/"
+ name + ".js");
_INCLUDED[name] = true;
}
};
const WP_STATE_START = CI.nsIWebProgressListener.STATE_START;
const WP_STATE_STOP = CI.nsIWebProgressListener.STATE_STOP;
const WP_STATE_DOC = CI.nsIWebProgressListener.STATE_IS_DOCUMENT;
const WP_STATE_START_DOC = WP_STATE_START | WP_STATE_DOC;
const WP_STATE_RESTORING = CI.nsIWebProgressListener.STATE_RESTORING;
const LF_VALIDATE_ALWAYS = CI.nsIRequest.VALIDATE_ALWAYS;
const LF_LOAD_BYPASS_ALL_CACHES = CI.nsIRequest.LOAD_BYPASS_CACHE | CI.nsICachingChannel.LOAD_BYPASS_LOCAL_CACHE;
const NS_OK = 0;
const NS_BINDING_ABORTED = 0x804b0002;
const NS_BINDING_REDIRECTED = 0x804b0003;
const NS_ERROR_UNKNOWN_HOST = 0x804b001e;
const NS_ERROR_REDIRECT_LOOP = 0x804b001f;
const NS_ERROR_CONNECTION_REFUSED = 0x804b000e;
const NS_ERROR_NOT_AVAILABLE = 0x804b0111;
const LOG_CONTENT_BLOCK = 1;
const LOG_CONTENT_CALL = 2;
const LOG_CONTENT_INTERCEPT = 4;
const LOG_CHROME_WIN = 8;
const LOG_XSS_FILTER = 16;
const LOG_INJECTION_CHECK = 32;
const LOG_DOM = 64;
const LOG_JS = 128;
const LOG_LEAKS = 1024;
const LOG_SNIFF = 2048;
const LOG_CLEARCLICK = 4096;
const LOG_ABE = 8192;
const HTML_NS = "http://www.w3.org/1999/xhtml";
const WHERE_UNTRUSTED = 1;
const WHERE_TRUSTED = 2;
const ANYWHERE = 3;
const N_COHORTS = 1000;
const DUMMY_OBJ = {};
DUMMY_OBJ.wrappedJSObject = DUMMY_OBJ;
const DUMMY_FUNC = function() {};
const DUMMY_ARRAY = [];
const EARLY_VERSION_CHECK = !("nsISessionStore" in CI && typeof(/ /) === "object");
// This is probably obsolete since the switch to the channel.redirectTo API
const OBSERVER_TOPIC_URI_REWRITE = "https-everywhere-uri-rewrite";
// XXX: Better plan for this?
// We need it to exist to make our updates of ChannelReplacement.js easier.
var ABE = {
consoleDump: false,
log: function(str) {
https_everywhereLog(WARN, str);
}
};
function xpcom_generateQI(iids) {
var checks = [];
for each (var iid in iids) {
checks.push("CI." + iid.name + ".equals(iid)");
}
var src = checks.length
? "if (" + checks.join(" || ") + ") return this;\n"
: "";
return new Function("iid", src + "throw Components.results.NS_ERROR_NO_INTERFACE;");
}
function xpcom_checkInterfaces(iid,iids,ex) {
for (var j = iids.length; j-- >0;) {
if (iid.equals(iids[j])) return true;
}
throw ex;
}
INCLUDE('ChannelReplacement', 'IOUtil', 'HTTPSRules', 'HTTPS', 'Thread', 'ApplicableList');
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
// This is black magic for storing Expando data w/ an nsIDOMWindow
// See http://pastebin.com/qY28Jwbv ,
// https://developer.mozilla.org/en/XPCOM_Interface_Reference/nsIControllers
StorageController.prototype = {
QueryInterface: XPCOMUtils.generateQI(
[ Components.interfaces.nsISupports,
Components.interfaces.nsIController ]),
wrappedJSObject: null, // Initialized by constructor
supportsCommand: function (cmd) {return (cmd == this.command);},
isCommandEnabled: function (cmd) {return (cmd == this.command);},
onEvent: function(eventName) {return true;},
doCommand: function() {return true;}
};
function StorageController(command) {
this.command = command;
this.data = {};
this.wrappedJSObject = this;
}
/*var Controller = Class("Controller", XPCOM(CI.nsIController), {
init: function (command, data) {
this.command = command;
this.data = data;
},
supportsCommand: function (cmd) cmd === this.command
});*/
function HTTPSEverywhere() {
// Set up logging in each component:
HTTPS.log = HTTPSRules.log = RuleWriter.log = this.log = https_everywhereLog;
this.log = https_everywhereLog;
this.wrappedJSObject = this;
this.https_rules = HTTPSRules;
this.rw = RuleWriter; // currently used for some file IO helpers, though that
// should probably be refactored
this.INCLUDE=INCLUDE;
this.ApplicableList = ApplicableList;
this.browser_initialised = false; // the browser is completely loaded
this.prefs = this.get_prefs();
this.rule_toggle_prefs = this.get_prefs(PREFBRANCH_RULE_TOGGLE);
this.httpNowhereEnabled = this.prefs.getBoolPref("http_nowhere.enabled");
// We need to use observers instead of categories for FF3.0 for these:
// https://developer.mozilla.org/en/Observer_Notifications
// https://developer.mozilla.org/en/nsIObserverService.
// https://developer.mozilla.org/en/nsIObserver
// We also use the observer service to let other extensions know about URIs
// we rewrite.
this.obsService = CC["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
if(this.prefs.getBoolPref("globalEnabled")){
this.obsService.addObserver(this, "profile-before-change", false);
this.obsService.addObserver(this, "profile-after-change", false);
this.obsService.addObserver(this, "sessionstore-windows-restored", false);
this.obsService.addObserver(this, "browser:purge-session-history", false);
}
var pref_service = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranchInternal);
var branch = pref_service.QueryInterface(Components.interfaces.nsIPrefBranchInternal);
branch.addObserver("extensions.https_everywhere.enable_mixed_rulesets",
this, false);
branch.addObserver("security.mixed_content.block_active_content",
this, false);
return;
}
// nsIContentPolicy interface
// we use numeric constants for performance sake:
const TYPE_OTHER = 1;
const TYPE_SCRIPT = 2;
const TYPE_IMAGE = 3;
const TYPE_STYLESHEET = 4;
const TYPE_OBJECT = 5;
const TYPE_DOCUMENT = 6;
const TYPE_SUBDOCUMENT = 7;
const TYPE_REFRESH = 8;
const TYPE_XBL = 9;
const TYPE_PING = 10;
const TYPE_XMLHTTPREQUEST = 11;
const TYPE_OBJECT_SUBREQUEST = 12;
const TYPE_DTD = 13;
const TYPE_FONT = 14;
const TYPE_MEDIA = 15;
// --------------
// REJECT_SERVER = -3
// ACCEPT = 1
// Some of these types are known by arbitrary assertion at
// https://bugzilla.mozilla.org/show_bug.cgi?id=677643#c47
// TYPE_FONT was required to fix https://trac.torproject.org/projects/tor/ticket/4194
// TYPE_SUBDOCUMENT was required to fix https://trac.torproject.org/projects/tor/ticket/4149
// I have NO IDEA why JS won't let me use the constants above in defining this
const shouldLoadTargets = {
1 : true,
3 : true,
5 : true,
12 : true,
14 : true,
7 : true
};
/*
In recent versions of Firefox and HTTPS Everywhere, the call stack for performing an HTTP -> HTTPS rewrite looks like this:
1. HTTPSEverywhere.observe() gets a callback with the "http-on-modify-request" topic, and the channel as a subject
1. HTTPSEverywhere.shouldIgnoreURI() checks for very quick reasons to ignore a
request, such as redirection loops, non-HTTP[S] URIs, and OCSP
2. HTTPS.replaceChannel()
3. HTTPSRules.rewrittenURI()
4. HTTPSRules.potentiallyApplicableRulesets uses <target host=""> elements to identify relevant rulesets
foreach RuleSet:
4. RuleSet.transformURI()
5. RuleSet.apply() does the tests and rewrites with RegExps, returning a string
4. RuleSet.transformURI() makes a new uri object for the destination string, if required
2. HTTPS.replaceChannel() calls channel.redirectTo() if a redirect is needed
In addition, the following other important tasks happen along the way:
HTTPSEverywhere.observe() finds a reference to the ApplicableList or alist that represents the toolbar context menu
HTTPS.replaceChannel() notices redirect loops (and used to do much more complex XPCOM API work in the NoScript-based past)
HTTPSRules.rewrittenURI() works around weird URI types like about: and http://user:pass@example.com/
and notifies the alist of what it should display for each ruleset
*/
// This defines for Mozilla what stuff HTTPSEverywhere will implement.
// ChannelEventSink used to be necessary in order to handle redirects (eg
// HTTP redirects) correctly. It may now be obsolete? XXX
HTTPSEverywhere.prototype = {
prefs: null,
// properties required for XPCOM registration:
classDescription: SERVICE_NAME,
classID: SERVICE_ID,
contractID: SERVICE_CTRID,
_xpcom_factory: {
createInstance: function (outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (!HTTPSEverywhere.instance)
HTTPSEverywhere.instance = new HTTPSEverywhere();
return HTTPSEverywhere.instance.QueryInterface(iid);
},
QueryInterface: XPCOMUtils.generateQI(
[ Components.interfaces.nsISupports,
Components.interfaces.nsIModule,
Components.interfaces.nsIFactory ])
},
// [optional] an array of categories to register this component in.
_xpcom_categories: [
{
category: "app-startup",
},
],
// QueryInterface implementation, e.g. using the generateQI helper
QueryInterface: XPCOMUtils.generateQI(
[ Components.interfaces.nsIObserver,
Components.interfaces.nsISupports,
Components.interfaces.nsISupportsWeakReference,
Components.interfaces.nsIWebProgressListener,
Components.interfaces.nsIWebProgressListener2,
Components.interfaces.nsIChannelEventSink ]),
wrappedJSObject: null, // Initialized by constructor
getWeakReference: function () {
return Components.utils.getWeakReference(this);
},
// An "expando" is an attribute glued onto something. From NoScript.
getExpando: function(domWin, key) {
var c = domWin.controllers.getControllerForCommand("https-everywhere-storage");
try {
if (c) {
c = c.wrappedJSObject;
//this.log(DBUG, "Found a controller, returning data");
return c.data[key];
} else {
this.log(INFO, "No controller attached to " + domWin);
return null;
}
} catch(e) {
// Firefox 3.5
this.log(WARN,"exception in getExpando");
this.getExpando = this.getExpando_old;
this.setExpando = this.setExpando_old;
return this.getExpando_old(domWin, key, null);
}
},
setExpando: function(domWin, key, value) {
var c = domWin.controllers.getControllerForCommand("https-everywhere-storage");
try {
if (!c) {
this.log(DBUG, "Appending new StorageController for " + domWin);
c = new StorageController("https-everywhere-storage");
domWin.controllers.appendController(c);
} else {
c = c.wrappedJSObject;
}
c.data[key] = value;
} catch(e) {
this.log(WARN,"exception in setExpando");
this.getExpando = this.getExpando_old;
this.setExpando = this.setExpando_old;
this.setExpando_old(domWin, key, value);
}
},
// This method is straight out of NoScript... we fall back to it in FF 3.*?
getExpando_old: function(domWin, key, defValue) {
var domObject = domWin.document;
return domObject && domObject.__httpsEStorage && domObject.__httpsEStorage[key] ||
(defValue ? this.setExpando(domObject, key, defValue) : null);
},
setExpando_old: function(domWin, key, value) {
var domObject = domWin.document;
if (!domObject) return null;
if (!domObject.__httpsEStorage) domObject.__httpsEStorage = {};
if (domObject.__httpsEStorage) domObject.__httpsEStorage[key] = value;
else this.log(WARN, "Warning: cannot set expando " + key + " to value " + value);
return value;
},
// We use onLocationChange to make a fresh list of rulesets that could have
// applied to the content in the current page (the "applicable list" is used
// for the context menu in the UI). This will be appended to as various
// content is embedded / requested by JavaScript.
onLocationChange: function(wp, req, uri) {
if (wp instanceof CI.nsIWebProgress) {
if (!this.newApplicableListForDOMWin(wp.DOMWindow))
this.log(WARN,"Something went wrong in onLocationChange");
} else {
this.log(WARN,"onLocationChange: no nsIWebProgress");
}
},
getWindowForChannel: function(channel) {
// Obtain an nsIDOMWindow from a channel
let loadContext;
try {
loadContext = channel.notificationCallbacks.getInterface(CI.nsILoadContext);
} catch(e) {
try {
loadContext = channel.loadGroup.notificationCallbacks.getInterface(CI.nsILoadContext);
} catch(e) {
this.log(NOTE, "No loadContext for " + channel.URI.spec);
return null;
}
}
let domWin = loadContext.associatedWindow;
if (!domWin) {
this.log(NOTE, "failed to get DOMWin for " + channel.URI.spec);
return null;
}
domWin = domWin.top;
return domWin;
},
// the lists get made when the urlbar is loading something new, but they
// need to be appended to with reference only to the channel
getApplicableListForChannel: function(channel) {
var domWin = this.getWindowForChannel(channel);
return this.getApplicableListForDOMWin(domWin, "on-modify-request w " + domWin);
},
newApplicableListForDOMWin: function(domWin) {
if (!domWin || !(domWin instanceof CI.nsIDOMWindow)) {
this.log(WARN, "Get alist without domWin");
return null;
}
var dw = domWin.top;
var alist = new ApplicableList(this.log,dw.document,dw);
this.setExpando(dw,"applicable_rules",alist);
return alist;
},
getApplicableListForDOMWin: function(domWin, where) {
if (!domWin || !(domWin instanceof CI.nsIDOMWindow)) {
//this.log(WARN, "Get alist without domWin");
return null;
}
var dw = domWin.top;
var alist= this.getExpando(dw,"applicable_rules",null);
if (alist) {
//this.log(DBUG,"get AL success in " + where);
return alist;
} else {
//this.log(DBUG, "Making new AL in getApplicableListForDOMWin in " + where);
alist = new ApplicableList(this.log,dw.document,dw);
this.setExpando(dw,"applicable_rules",alist);
}
return alist;
},
// These are the highest level heuristics for figuring out whether
// we should consider rewriting a URI. Everything here should be simple
// and avoid dependence on the ruleset library
shouldIgnoreURI: function(channel, alist) {
var uri = channel.URI;
// Ignore all non-http(s) requests?
if (!(uri.schemeIs("http") || uri.schemeIs("https"))) { return true; }
// If HTTP Nowhere is enabled, skip the rest of the shouldIgnoreURI checks
if (this.httpNowhereEnabled) {
return false;
}
// These are URIs we've seen redirecting back in loops after we redirect them
if (uri.spec in https_everywhere_blacklist) {
this.log(DBUG, "Avoiding blacklisted " + uri.spec);
if (alist) {
alist.breaking_rule(https_everywhere_blacklist[uri.spec]);
} else {
this.log(NOTE,"Failed to indicate breakage in content menu");
}
return true;
}
// OCSP (currently) needs to be HTTP to avoid cert validation loops
// though someone should rev the spec to allow opportunistic encryption
if ("allowSTS" in channel) {
// Firefox 32+ lets us infer whether this is an OCSP request
if (!channel.allowSTS) {
this.log(INFO, "Channel with HTTPS rewrites forbidden, deeming OCSP, for " + channel.URI.spec);
return true;
}
} else {
// Firefox <32 requires a more hacky estimate
// load the list opportunistically to speed startup & FF 32+
if (this.ocspList == undefined) { this.loadOCSPList(); }
if (this.ocspList.indexOf(uri.spec.replace(/\/$/,'')) !== -1) {
this.log(INFO, "Known ocsp request "+uri.spec);
return true;
}
}
return false;
},
loadOCSPList: function() {
try {
var loc = "chrome://https-everywhere/content/code/commonOCSP.json";
var file = CC["@mozilla.org/file/local;1"].createInstance(CI.nsILocalFile);
file.initWithPath(this.rw.chromeToPath(loc));
var data = this.rw.read(file);
this.ocspList = JSON.parse(data);
} catch(e) {
this.log(WARN, "Failed to load OCSP list: " + e);
this.ocspList = [];
}
},
observe: function(subject, topic, data) {
// Top level glue for the nsIObserver API
var channel = subject;
//this.log(VERB,"Got observer topic: "+topic);
if (topic == "http-on-modify-request") {
if (!(channel instanceof CI.nsIHttpChannel)) return;
this.log(DBUG,"Got http-on-modify-request: "+channel.URI.spec);
// lst is null if no window is associated (ex: some XHR)
var lst = this.getApplicableListForChannel(channel);
if (this.shouldIgnoreURI(channel, lst)) return;
HTTPS.replaceChannel(lst, channel, this.httpNowhereEnabled);
} else if (topic == "http-on-examine-response") {
this.log(DBUG, "Got http-on-examine-response @ "+ (channel.URI ? channel.URI.spec : '') );
HTTPS.handleSecureCookies(channel);
} else if (topic == "http-on-examine-merged-response") {
this.log(DBUG, "Got http-on-examine-merged-response ");
HTTPS.handleSecureCookies(channel);
} else if (topic == "cookie-changed") {
// Javascript can add cookies via document.cookie that are insecure.
if (data == "added" || data == "changed") {
// subject can also be an nsIArray! bleh.
try {
subject.QueryInterface(CI.nsIArray);
var elems = subject.enumerate();
while (elems.hasMoreElements()) {
var cookie = elems.getNext()
.QueryInterface(CI.nsICookie2);
if (!cookie.isSecure) {
HTTPS.handleInsecureCookie(cookie);
}
}
} catch(e) {
subject.QueryInterface(CI.nsICookie2);
if(!subject.isSecure) {
HTTPS.handleInsecureCookie(subject);
}
}
}
} else if (topic == "profile-before-change") {
this.log(INFO, "Got profile-before-change");
var catman = Components.classes["@mozilla.org/categorymanager;1"]
.getService(Components.interfaces.nsICategoryManager);
catman.deleteCategoryEntry("net-channel-event-sinks", SERVICE_CTRID, true);
Thread.hostRunning = false;
} else if (topic == "profile-after-change") {
this.log(DBUG, "Got profile-after-change");
if(this.prefs.getBoolPref("globalEnabled")){
OS.addObserver(this, "cookie-changed", false);
OS.addObserver(this, "http-on-modify-request", false);
OS.addObserver(this, "http-on-examine-merged-response", false);
OS.addObserver(this, "http-on-examine-response", false);
var dls = CC['@mozilla.org/docloaderservice;1']
.getService(CI.nsIWebProgress);
dls.addProgressListener(this, CI.nsIWebProgress.NOTIFY_LOCATION);
this.log(INFO,"ChannelReplacement.supported = "+ChannelReplacement.supported);
HTTPSRules.init();
Thread.hostRunning = true;
var catman = Components.classes["@mozilla.org/categorymanager;1"]
.getService(Components.interfaces.nsICategoryManager);
// hook on redirections (non persistent, otherwise crashes on 1.8.x)
catman.addCategoryEntry("net-channel-event-sinks", SERVICE_CTRID,
SERVICE_CTRID, false, true);
}
} else if (topic == "sessionstore-windows-restored") {
this.log(DBUG,"Got sessionstore-windows-restored");
this.maybeShowObservatoryPopup();
this.browser_initialised = true;
} else if (topic == "nsPref:changed") {
// If the user toggles the Mixed Content Blocker settings, reload the rulesets
// to enable/disable the mixedcontent ones
// this pref gets set to false and then true during FF 26 startup!
// so do nothing if we're being notified during startup
if (!this.browser_initialised)
return;
switch (data) {
case "security.mixed_content.block_active_content":
case "extensions.https_everywhere.enable_mixed_rulesets":
var p = CC["@mozilla.org/preferences-service;1"].getService(CI.nsIPrefBranch);
var val = p.getBoolPref("security.mixed_content.block_active_content");
this.log(INFO,"nsPref:changed for "+data + " to " + val);
HTTPSRules.init();
break;
}
} else if (topic == "browser:purge-session-history") {
// The list of rulesets that have been loaded from the sqlite DB
// constitutes a parallel history store, so we have to clear it.
this.log(DBUG, "History cleared, reloading HTTPSRules to avoid information leak.");
HTTPSRules.init();
}
return;
},
maybeShowObservatoryPopup: function() {
// Show the popup at most once. Users who enabled the Observatory before
// a version that would have shown it to them, don't need to see it
// again.
var ssl_observatory = CC["@eff.org/ssl-observatory;1"]
.getService(Components.interfaces.nsISupports)
.wrappedJSObject;
var shown = ssl_observatory.myGetBoolPref("popup_shown");
var enabled = ssl_observatory.myGetBoolPref("enabled");
var that = this;
var obs_popup_callback = function(result) {
if (result) that.log(INFO, "Got positive proxy test.");
else that.log(INFO, "Got negative proxy text.");
// We are now ready to show the popup in its most informative state
that.chrome_opener("chrome://https-everywhere/content/observatory-popup.xul");
};
if (!shown && !enabled)
ssl_observatory.registerProxyTestNotification(obs_popup_callback);
if (shown && enabled)
this.maybeCleanupObservatoryPrefs(ssl_observatory);
},
maybeCleanupObservatoryPrefs: function(ssl_observatory) {
// Recover from a past UI processing bug that would leave the Obsevatory
// accidentally disabled for some users
// https://trac.torproject.org/projects/tor/ticket/10728
var clean = ssl_observatory.myGetBoolPref("clean_config");
if (clean) return;
// unchanged: returns true if a pref has not been modified
var unchanged = function(p){return !ssl_observatory.prefs.prefHasUserValue("extensions.https_everywhere._observatory."+p)};
var cleanup_obsprefs_callback = function(tor_avail) {
// we only run this once
ssl_observatory.prefs.setBoolPref("extensions.https_everywhere._observatory.clean_config", true);
if (!tor_avail) {
// use_custom_proxy is the variable that is often false when it should be true;
if (!ssl_observatory.myGetBoolPref("use_custom_proxy")) {
// however don't do anything if any of the prefs have been set by the user
if (unchanged("alt_roots") && unchanged("self_signed") && unchanged ("send_asn") && unchanged("priv_dns")) {
ssl_observatory.prefs.setBoolPref("extensions.https_everywhere._observatory.use_custom_proxy", true);
}
}
}
}
ssl_observatory.registerProxyTestNotification(cleanup_obsprefs_callback);
},
getExperimentalFeatureCohort: function() {
// This variable is used for gradually turning on features for testing and
// scalability purposes. It is a random integer [0,N_COHORTS) generated
// once and stored thereafter.
//
// This is not currently used/called in the development branch
var cohort;
try {
cohort = this.prefs.getIntPref("experimental_feature_cohort");
} catch(e) {
cohort = Math.round(Math.random() * N_COHORTS);
this.prefs.setIntPref("experimental_feature_cohort", cohort);
}
return cohort;
},
// nsIChannelEventSink implementation
// XXX This was here for rewrites in the past. Do we still need it?
onChannelRedirect: function(oldChannel, newChannel, flags) {
const uri = newChannel.URI;
this.log(DBUG,"Got onChannelRedirect to "+uri.spec);
if (!(newChannel instanceof CI.nsIHttpChannel)) {
this.log(DBUG, newChannel + " is not an instance of nsIHttpChannel");
return;
}
var alist = this.juggleApplicableListsDuringRedirection(oldChannel, newChannel);
HTTPS.replaceChannel(alist, newChannel, this.httpNowhereEnabled);
},
juggleApplicableListsDuringRedirection: function(oldChannel, newChannel) {
// If the new channel doesn't yet have a list of applicable rulesets, start
// with the old one because that's probably a better representation of how
// secure the load process was for this page
var domWin = this.getWindowForChannel(oldChannel);
var old_alist = null;
if (domWin)
old_alist = this.getExpando(domWin,"applicable_rules", null);
domWin = this.getWindowForChannel(newChannel);
if (!domWin) return null;
var new_alist = this.getExpando(domWin,"applicable_rules", null);
if (old_alist && !new_alist) {
new_alist = old_alist;
this.setExpando(domWin,"applicable_rules",new_alist);
} else if (!new_alist) {
new_alist = new ApplicableList(this.log, domWin.document, domWin);
this.setExpando(domWin,"applicable_rules",new_alist);
}
return new_alist;
},
asyncOnChannelRedirect: function(oldChannel, newChannel, flags, callback) {
this.onChannelRedirect(oldChannel, newChannel, flags);
callback.onRedirectVerifyCallback(0);
},
get_prefs: function(prefBranch) {
if(!prefBranch) prefBranch = PREFBRANCH_ROOT;
// get our preferences branch object
// FIXME: Ugly hack stolen from https
var branch_name;
if(prefBranch == PREFBRANCH_RULE_TOGGLE)
branch_name = "extensions.https_everywhere.rule_toggle.";
else
branch_name = "extensions.https_everywhere.";
var o_prefs = false;
var o_branch = false;
// this function needs to be called from inside https_everywhereLog, so
// it needs to do its own logging...
var econsole = Components.classes["@mozilla.org/consoleservice;1"]
.getService(Components.interfaces.nsIConsoleService);
o_prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefService);
if (!o_prefs)
{
econsole.logStringMessage("HTTPS Everywhere: Failed to get preferences-service!");
return false;
}
o_branch = o_prefs.getBranch(branch_name);
if (!o_branch)
{
econsole.logStringMessage("HTTPS Everywhere: Failed to get prefs branch!");
return false;
}
if(prefBranch == PREFBRANCH_ROOT) {
// make sure there's an entry for our log level
try {
o_branch.getIntPref(LLVAR);
} catch (e) {
econsole.logStringMessage("Creating new about:config https_everywhere.LogLevel variable");
o_branch.setIntPref(LLVAR, WARN);
}
}
return o_branch;
},
chrome_opener: function(uri, args) {
// we don't use window.open, because we need to work around TorButton's
// state control
args = args || 'chrome,centerscreen';
return CC['@mozilla.org/appshell/window-mediator;1']
.getService(CI.nsIWindowMediator)
.getMostRecentWindow('navigator:browser')
.open(uri,'', args );
},
tab_opener: function(uri) {
var gb = CC['@mozilla.org/appshell/window-mediator;1']
.getService(CI.nsIWindowMediator)
.getMostRecentWindow('navigator:browser')
.gBrowser;
var tab = gb.addTab(uri);
gb.selectedTab = tab;
return tab;
},
toggleEnabledState: function() {
if (this.prefs.getBoolPref("globalEnabled")) {
try {
this.obsService.removeObserver(this, "profile-before-change");
this.obsService.removeObserver(this, "profile-after-change");
this.obsService.removeObserver(this, "sessionstore-windows-restored");
OS.removeObserver(this, "cookie-changed");
OS.removeObserver(this, "http-on-modify-request");
OS.removeObserver(this, "http-on-examine-merged-response");
OS.removeObserver(this, "http-on-examine-response");
var catman = CC["@mozilla.org/categorymanager;1"]
.getService(CI.nsICategoryManager);
catman.deleteCategoryEntry("net-channel-event-sinks",
SERVICE_CTRID, true);
var dls = CC['@mozilla.org/docloaderservice;1']
.getService(CI.nsIWebProgress);
dls.removeProgressListener(this);
this.prefs.setBoolPref("globalEnabled", false);
} catch(e) {
this.log(WARN, "Couldn't remove observers: " + e);
}
} else {
try {
this.obsService.addObserver(this, "profile-before-change", false);
this.obsService.addObserver(this, "profile-after-change", false);
this.obsService.addObserver(this, "sessionstore-windows-restored", false);
OS.addObserver(this, "cookie-changed", false);
OS.addObserver(this, "http-on-modify-request", false);
OS.addObserver(this, "http-on-examine-merged-response", false);
OS.addObserver(this, "http-on-examine-response", false);
var dls = CC['@mozilla.org/docloaderservice;1']
.getService(CI.nsIWebProgress);
dls.addProgressListener(this, CI.nsIWebProgress.NOTIFY_LOCATION);
this.log(INFO,
"ChannelReplacement.supported = "+ChannelReplacement.supported);
if (!Thread.hostRunning) {
Thread.hostRunning = true;
}
var catman = CC["@mozilla.org/categorymanager;1"]
.getService(CI.nsICategoryManager);
// hook on redirections (non persistent, otherwise crashes on 1.8.x)
catman.addCategoryEntry("net-channel-event-sinks", SERVICE_CTRID,
SERVICE_CTRID, false, true);
HTTPSRules.init();
this.prefs.setBoolPref("globalEnabled", true);
} catch(e) {
this.log(WARN, "Couldn't add observers: " + e);
}
}
},
toggleHttpNowhere: function() {
let prefService = Services.prefs;
let thisBranch =
prefService.getBranch("extensions.https_everywhere.http_nowhere.");
let securityBranch = prefService.getBranch("security.");
// Whether cert is treated as invalid when OCSP connection fails
let OCSP_REQUIRED = "OCSP.require";
// Branch to save original settings
let ORIG_OCSP_REQUIRED = "orig.ocsp.required";
if (thisBranch.getBoolPref("enabled")) {
// Restore original OCSP settings. TODO: What if user manually edits
// these while HTTP Nowhere is enabled?
let origOcspRequired = thisBranch.getBoolPref(ORIG_OCSP_REQUIRED);
securityBranch.setBoolPref(OCSP_REQUIRED, origOcspRequired);
thisBranch.setBoolPref("enabled", false);
this.httpNowhereEnabled = false;
} else {
// Save original OCSP settings in HTTP Nowhere preferences branch.
let origOcspRequired = securityBranch.getBoolPref(OCSP_REQUIRED);
thisBranch.setBoolPref(ORIG_OCSP_REQUIRED, origOcspRequired);
// Disable OCSP enforcement
securityBranch.setBoolPref(OCSP_REQUIRED, false);
thisBranch.setBoolPref("enabled", true);
this.httpNowhereEnabled = true;
}
}
};
var prefs = 0;
var econsole = 0;
function https_everywhereLog(level, str) {
if (prefs == 0) {
prefs = HTTPSEverywhere.instance.get_prefs();
econsole = Components.classes["@mozilla.org/consoleservice;1"]
.getService(Components.interfaces.nsIConsoleService);
}
try {
var threshold = prefs.getIntPref(LLVAR);
} catch (e) {
econsole.logStringMessage( "HTTPS Everywhere: Failed to read about:config LogLevel");
threshold = WARN;
}
if (level >= threshold) {
dump("HTTPS Everywhere: "+str+"\n");
econsole.logStringMessage("HTTPS Everywhere: " +str);
}
}
/**
* XPCOMUtils.generateNSGetFactory was introduced in Mozilla 2 (Firefox 4).
* XPCOMUtils.generateNSGetModule is for Mozilla 1.9.2 (Firefox 3.6).
*/
if (XPCOMUtils.generateNSGetFactory)
var NSGetFactory = XPCOMUtils.generateNSGetFactory([HTTPSEverywhere]);
else
var NSGetModule = XPCOMUtils.generateNSGetModule([HTTPSEverywhere]);
/* vim: set tabstop=4 expandtab: */