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<script src="rule_list.js"></script>
<script src="util.js"></script>
<script src="rules.js"></script>
<script>
var all_rules = new RuleSets();
var wr = chrome.webRequest;
/*
for (var v in localStorage) {
log(DBUG, "localStorage["+v+"]: "+localStorage[v]);
}
var rs = all_rules.applicableRulesets("www.google.com");
for (r in rs) {
log(DBUG, rs[r].name +": "+ rs[r].active);
log(DBUG, rs[r].name +": "+ rs[r].default_state);
}
*/
function AppliedRulesets() {
this.active_tab_rules = {}
var that = this;
chrome.tabs.onRemoved.addListener(function(tabId, info) {
that.removeTab(tabId);
});
}
AppliedRulesets.prototype = {
addRulesetToTab: function(tabId, ruleset) {
if (tabId in this.active_tab_rules) {
this.active_tab_rules[tabId][ruleset.name] = ruleset;
} else {
this.active_tab_rules[tabId] = {};
this.active_tab_rules[tabId][ruleset.name] = ruleset;
}
},
getRulesets: function(tabId) {
if (tabId in this.active_tab_rules)
return this.active_tab_rules[tabId];
else
return null;
},
removeTab: function(tabId) {
delete this.active_tab_rules[tabId];
}
};
// FIXME: change this name
var activeRulesets = new AppliedRulesets();
var urlBlacklist = {};
// redirect counter workaround
// TODO: Remove this code if they ever give us a real counter
var redirectCounter = {};
function onBeforeRequest(details) {
if (details.url in urlBlacklist) {
return;
}
var a = document.createElement('a');
a.href = details.url;
if (details.type == "main_frame") {
activeRulesets.removeTab(details.tabId);
}
if (details.requestId in redirectCounter) {
redirectCounter[details.requestId] += 1;
log(DBUG, "Got redirect id "+details.requestId+
": "+redirectCounter[details.requestId]);
} else {
redirectCounter[details.requestId] = 0;
}
if (redirectCounter[details.requestId] > 9) {
log(NOTE, "Redirect counter hit for "+details.url);
urlBlacklist[details.url] = true;
return;
}
var newuri = null;
var i = 0;
var rs = all_rules.applicableRulesets(a.host);
for(i = 0; i < rs.length; ++i) {
activeRulesets.addRulesetToTab(details.tabId, rs[i]);
if (rs[i].active && !newuri)
newuri = rs[i]._apply(details.url);
}
if (newuri) {
log(DBUG, "Redirecting from "+a.href+" to "+newuri);
return {redirectUrl: newuri};
}
}
function onCookieChanged(changeInfo) {
if (!changeInfo.removed && !changeInfo.cookie.secure) {
if (all_rules.shouldSecureCookie(changeInfo.cookie)) {
var cookie = {name:changeInfo.cookie.name,value:changeInfo.cookie.value,
domain:changeInfo.cookie.domain,path:changeInfo.cookie.path,
httpOnly:changeInfo.cookie.httpOnly,
expirationDate:changeInfo.cookie.expirationDate,
storeId:changeInfo.cookie.storeId};
cookie.secure = true;
// FIXME: What is with this url noise? are we just supposed to lie?
if (cookie.domain[0] == ".") {
cookie.url = "https://www"+cookie.domain+cookie.path;
} else {
cookie.url = "https://"+cookie.domain+cookie.path;
}
// We get repeated events for some cookies because sites change their
// value repeatedly and remove the 'secure' flag.
log(DBUG,
"Securing cookie "+cookie.name+" for "+cookie.domain+", was secure="+changeInfo.cookie.secure);
chrome.cookies.set(cookie);
}
}
}
// This event is needed due to the potential race between cookie permissions
// update and cookie transmission, becuase the cookie API is non-blocking..
function onHeadersReceived(details) {
var a = document.createElement('a');
a.href = details.url;
var host = a.hostname;
// TODO: Verify this with wireshark
for (var h in details.responseHeaders) {
if (details.responseHeaders[h].name == "Set-Cookie") {
var cookie = details.responseHeaders[h].value;
if (cookie.indexOf("; Secure") == -1) {
log(DBUG, "Got insecure cookie header: "+cookie);
var ruleset = null;
// Create a fake "nsICookie2"-ish object to pass in to our rule API:
if ((ruleset = all_rules.shouldSecureCookie({domain:a.hostname,
name:cookie.split("=")[0]}))) {
activeRulesets.addRulesetToTab(details.tabId, ruleset);
details.responseHeaders[h].value = cookie+"; Secure";
log(INFO, "Secured cookie: "+details.responseHeaders[h].value);
}
}
}
}
return {responseHeaders:details.responseHeaders};
}
// This event is needed due to the potential race between cookie permissions
// update and cookie transmission, becuase the cookie API is non-blocking..
// It would be less perf impact to have a blocking version of the cookie API
// available instead.
function onBeforeSendHeaders(details) {
var a = document.createElement('a');
a.href = details.url;
var host = a.hostname;
if(a.protocol == "https:") {
// All cookies may be sent over https...
return;
}
// TODO: Verify this with wireshark
for (var h in details.requestHeaders) {
if (details.requestHeaders[h].name == "Cookie") {
var newCookies = [];
var cookies = details.requestHeaders[h].value.split(";");
for (var c in cookies) {
var ruleset = null;
// Create a fake "nsICookie2"-ish object to pass in to our rule API:
if ((ruleset = all_rules.shouldSecureCookie({domain:a.hostname,
name:cookies[c].split("=")[0]}))) {
activeRulesets.addRulesetToTab(details.tabId, ruleset);
log(INFO, "Woah, we lost the race on updating a cookie: "+details.requestHeaders[h].value);
} else {
newCookies.push(cookies[c]);
}
}
details.requestHeaders[h].value = newCookies.join(";");
log(DBUG, "Got new cookie header: "+details.requestHeaders[h].value);
}
}
return {requestHeaders:details.requestHeaders};
}
function onResponseStarted(details) {
if (details.tabId == -1) {
return;
}
if (this.activeRulesets.getRulesets(details.tabId)) {
chrome.pageAction.show(details.tabId);
}
// redirect counter workaround
// TODO: Remove this code if they ever give us a real counter
if (details.requestId in redirectCounter) {
delete redirectCounter[details.requestId];
}
}
wr.onBeforeRequest.addListener(onBeforeRequest, {urls: ["http://*/*"]}, ["blocking"]);
wr.onBeforeSendHeaders.addListener(onBeforeSendHeaders, {urls: ["http://*/*"]}, //{urls: ["*://*/*"]},
["requestHeaders", "blocking"]);
// FIXME: We probably do want all urls.. or at least http+https+spdy?
wr.onHeadersReceived.addListener(onHeadersReceived, {urls: ["https://*/*", "http://*/*"]},
["responseHeaders", "blocking"]);
wr.onResponseStarted.addListener(onResponseStarted,
{urls: ["https://*/*", "http://*/*"]});
chrome.cookies.onChanged.addListener(onCookieChanged);
</script>