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Copy pathHTTPS.js
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318 lines (271 loc) · 10.4 KB
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Copy pathHTTPS.js
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318 lines (271 loc) · 10.4 KB
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INCLUDE('Cookie');
var securityService = CC['@mozilla.org/ssservice;1']
.getService(CI.nsISiteSecurityService);
// Hack. We only need the part of the policystate that tracks content
// policy loading.
const PolicyState = {
attach: function(channel) {
IOUtil.attachToChannel(channel, "httpseverywhere.policyLoaded", true);
},
extract: function(channel) {
var res = IOUtil.extractFromChannel(channel,
"httpseverywhere.policyLoaded", true);
return res;
},
};
const HTTPS = {
ready: false,
secureCookies: true,
secureCookiesExceptions: null,
secureCookiesForced: null,
httpsForced: null,
httpsForcedExceptions: null,
httpsRewrite: null,
/**
* Given a channel and a list of potentially applicable rules,
* redirect or abort a request if appropriate.
*
* @param {RuleSet[]} applicable_list A list of potentially applicable rules
* (i.e. those that match on a hostname basis).
* @param {nsIChannel} channel The channel to be manipulated.
* @param {boolean} httpNowhereEnabled Whether to abort non-https requests.
* @returns {boolean} True if the request was redirected; false if it was
* untouched or aborted.
*/
replaceChannel: function(applicable_list, channel, httpNowhereEnabled) {
var blob = HTTPSRules.rewrittenURI(applicable_list, channel.URI.clone());
var isSTS = securityService.isSecureURI(
CI.nsISiteSecurityService.HEADER_HSTS, channel.URI, 0);
if (blob === null) {
// Abort insecure requests if HTTP Nowhere is on
if (httpNowhereEnabled && channel.URI.schemeIs("http") && !isSTS) {
IOUtil.abort(channel);
}
return false; // no rewrite
}
var uri = blob.newuri;
if (!uri) this.log(WARN, "OH NO BAD ARGH\nARGH");
// Abort downgrading if HTTP Nowhere is on
if (httpNowhereEnabled && uri.schemeIs("http")) {
IOUtil.abort(channel);
}
var c2 = channel.QueryInterface(CI.nsIHttpChannel);
this.log(DBUG, channel.URI.spec+": Redirection limit is " + c2.redirectionLimit);
// XXX This used to be (c2.redirectionLimit == 1), but that's very
// inefficient in a case (eg amazon) where this may happen A LOT.
// Rather than number like 10, we should use the starting value
// in network.http.redirection-limit minus some counter
if (c2.redirectionLimit < 10) {
this.log(WARN, "Redirection loop trying to set HTTPS on:\n " +
channel.URI.spec +"\n(falling back to HTTP)");
if (!blob.applied_ruleset) {
this.log(WARN,"Blacklisting rule for: " + channel.URI.spec);
https_everywhere_blacklist[channel.URI.spec] = true;
}
https_everywhere_blacklist[channel.URI.spec] = blob.applied_ruleset;
var domain = null;
try { domain = channel.URI.host; } catch (e) {}
if (domain) https_blacklist_domains[domain] = true;
if (httpNowhereEnabled && channel.URI.schemeIs("http")) {
IOUtil.abort(channel);
}
return false;
}
// Check for the new internal redirect API. If it exists, use it.
if (!"redirectTo" in channel) {
this.log(WARN, "nsIHTTPChannel.redirectTo API is missing. This version of HTTPS Everywhere is useless!!!!\n!!!\n");
return false;
}
this.log(INFO, "Using nsIHttpChannel.redirectTo: " + channel.URI.spec + " -> " + uri.spec);
try {
channel.redirectTo(uri);
return true;
} catch(e) {
// This should not happen. We should only get exceptions if
// the channel was already open.
this.log(WARN, "Exception on nsIHttpChannel.redirectTo: "+e);
}
this.log(WARN,"Aborting redirection " + channel.name + ", should be HTTPS!");
IOUtil.abort(channel);
return false;
},
// getApplicableListForContext was remove along with the nsIContentPolicy
// bindings and the and forceURI path that used them.
onCrossSiteRequest: function(channel, origin, browser, rw) {
try {
this.handleCrossSiteCookies(channel, origin, browser);
} catch(e) {
this.log(WARN, e + " --- " + e.stack);
}
},
registered: false,
handleSecureCookies: function(req) {
try {
req = req.QueryInterface(CI.nsIHttpChannel);
} catch(e) {
this.log(WARN, "Request is not an nsIHttpChannel: " + req);
return;
}
if (!this.secureCookies) return;
var uri = req.URI;
if (!uri) {
this.log(WARN,"No URI inside request " +req);
return;
}
//this.log(DBUG, "Cookie hunting in " + uri.spec);
var alist = HTTPSEverywhere.instance.getApplicableListForChannel(req);
if (!alist)
this.log(INFO, "No alist for cookies for "+(req.URI) ? req.URI.spec : "???");
if (uri.schemeIs("https")) {
var host = uri.host;
try {
var cookies = req.getResponseHeader("Set-Cookie");
} catch(mayHappen) {
//this.log(VERB,"Exception hunting Set-Cookie in headers: " + mayHappen);
return;
}
if (!cookies) return;
var c;
for each (var cs in cookies.split("\n")) {
this.log(DBUG, "Examining cookie: ");
c = new Cookie(cs, host);
if (!c.secure && HTTPSRules.shouldSecureCookie(alist, c, true)) {
this.log(INFO, "Securing cookie: " + c.domain + " " + c.name);
c.secure = true;
req.setResponseHeader("Set-Cookie", c.source + ";Secure", true);
}
}
}
},
handleInsecureCookie: function(c) {
if (HTTPSRules.shouldSecureCookie(null, c, false)) {
this.log(INFO, "Securing cookie from event: " + c.host + " " + c.name);
var cookieManager = Components.classes["@mozilla.org/cookiemanager;1"]
.getService(Components.interfaces.nsICookieManager2);
//some braindead cookies apparently use umghzabilliontrabilions
var expiry = Math.min(c.expiry, Math.pow(2,31));
cookieManager.remove(c.host, c.name, c.path, false);
cookieManager.add(c.host, c.path, c.name, c.value, true, c.isHTTPOnly, c.isSession, expiry);
}
},
handleCrossSiteCookies: function(req, origin, browser) {
var unsafeCookies = this.getUnsafeCookies(browser);
if (!unsafeCookies) return;
var uri = req.URI;
var dscheme = uri.scheme;
var oparts = origin && origin.match(/^(https?):\/\/([^\/:]+).*?(\/.*)/);
if (!(oparts && /https?/.test(dscheme))) return;
var oscheme = oparts[1];
if (oscheme == dscheme) return; // we want to check only cross-scheme requests
var dsecure = dscheme == "https";
if (dsecure && !ns.getPref("secureCookies.recycle", false)) return;
var dhost = uri.host;
var dpath = uri.path;
var ohost = oparts[2];
var opath = oparts[3];
var ocookieCount = 0, totCount = 0;
var dcookies = [];
var c;
for (var k in unsafeCookies) {
c = unsafeCookies[k];
if (!c.exists()) {
delete unsafeCookies[k];
} else {
totCount++;
if (c.belongsTo(dhost, dpath) && c.secure != dsecure) { // either secure on http or not secure on https
dcookies.push(c);
}
if (c.belongsTo(ohost, opath)) {
ocookieCount++;
}
}
}
if (!totCount) {
this.setUnsafeCookies(browser, null);
return;
}
// We want to "desecurify" cookies only if cross-navigation to unsafe
// destination originates from a site sharing some secured cookies
if (ocookieCount == 0 && !dsecure || !dcookies.length) return;
if (dsecure) {
this.log(WARN,"Detected cross-site navigation with secured cookies: " + origin + " -> " + uri.spec);
} else {
this.log(WARN,"Detected unsafe navigation with NoScript-secured cookies: " + origin + " -> " + uri.spec);
this.log(WARN,uri.prePath + " cannot support secure cookies because it does not use HTTPS. Consider forcing HTTPS for " + uri.host + " in NoScript's Advanced HTTPS options panel.");
}
var cs = CC['@mozilla.org/cookieService;1'].getService(CI.nsICookieService).getCookieString(uri, req);
for each (c in dcookies) {
c.secure = dsecure;
c.save();
this.log(WARN,"Toggled secure flag on " + c);
}
if (cs) {
dcookies.push.apply(
dcookies, cs.split(/\s*;\s*/).map(function(cs) { var nv = cs.split("="); return { name: nv.shift(), value: nv.join("=") }; })
.filter(function(c) { return dcookies.every(function(x) { return x.name != c.name; }); })
);
}
cs = dcookies.map(function(c) { return c.name + "=" + c.value; }).join("; ");
this.log(WARN,"Sending Cookie for " + dhost + ": " + cs);
req.setRequestHeader("Cookie", cs, false); // "false" because merge syntax breaks Cookie header
},
cookiesCleanup: function(refCookie) {
var downgraded = [];
var ignored = this.secureCookiesExceptions;
var disabled = !this.secureCookies;
var bi = DOM.createBrowserIterator();
var unsafe, k, c, total, deleted;
for (var browser; browser = bi.next();) {
unsafe = this.getUnsafeCookies(browser);
if (!unsafe) continue;
total = deleted = 0;
for (k in unsafe) {
c = unsafe[k];
total++;
if (disabled || (refCookie ? c.belongsTo(refCookie.host) : ignored && ignored.test(c.rawHost))) {
if (c.exists()) {
this.log(WARN,"Cleaning Secure flag from " + c);
c.secure = false;
c.save();
}
delete unsafe[k];
deleted++;
}
}
if (total == deleted) this.setUnsafeCookies(browser, null);
if (!this.cookiesPerTab) break;
}
},
get cookiesPerTab() {
return ns.getPref("secureCookies.perTab", false);
},
_globalUnsafeCookies: {},
getUnsafeCookies: function(browser) {
return this.cookiesPerTab
? browser && ns.getExpando(browser, "unsafeCookies")
: this._globalUnsafeCookies;
},
setUnsafeCookies: function(browser, value) {
return this.cookiesPerTab
? browser && ns.setExpando(browser, "unsafeCookies", value)
: this._globalUnsafeCookies = value;
},
_getParent: function(req, w) {
return w && w.frameElement || DOM.findBrowserForNode(w || IOUtil.findWindow(req));
}
};
(function () {
["secureCookies", "secureCookiesExceptions", "secureCookiesForced"].forEach(function(p) {
var v = HTTPS[p];
delete HTTPS[p];
HTTPS.__defineGetter__(p, function() {
return v;
});
HTTPS.__defineSetter__(p, function(n) {
v = n;
if (HTTPS.ready) HTTPS.cookiesCleanup();
return v;
});
});
})();
HTTPS.ready = true;
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