/
events.js
88 lines (78 loc) · 2.46 KB
/
events.js
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/*global Policy, chrome, Datastore */
var data, rePatterns;
function beforeEventCallback(details){
if(!localStorage['enable'] || localStorage['enable'] == 0) {
return {
requestHeaders: sendHeaders
};
}
var matchedUrl = details.url;
var index = 0;
var target_index = -1;
rePatterns.some(function(pattern) {
++index;
var policy = data[index - 1];
console.log(policy.enable);
if (policy.enable == 1) {
if (pattern.test(matchedUrl)) {
target_index = index - 1;
return true;
}
}
return false;
});
if ( target_index < 0 ) {
return {
requestHeaders: details.requestHeaders
};
}
var policy = data[index - 1];
var targetHeaders = Object.keys(policy.rules);
var sendHeaders = details.requestHeaders;
targetHeaders.forEach(function(name){
var value = Policy.calculateRuledValue(policy.rules[name], matchedUrl);
if(value.ruletype == "noop") {
return;
}
for (var i = 0; i < sendHeaders.length; ++i) {
if (sendHeaders[i].name == name) {
if (value.ruletype == "fixed" || value.ruletype == "empty") {
sendHeaders[i].value = value.value;
} else if (value.ruletype == "extra") {
sendHeaders[i].value = value.value + sendHeaders[i].value;
}
}
}
});
return {
requestHeaders: sendHeaders
};
}
function setupEventMonitor() {
data = Datastore.load();
rePatterns = data.map(function(policy){ return new RegExp(policy.pattern.replace(/\*/g, ".*")); });
chrome.webRequest.onBeforeSendHeaders.addListener(
beforeEventCallback,
{
urls: data.map(function(rule){ return rule.pattern; })
},
["blocking", "requestHeaders"]
);
}
function changeIconBadgeText() {
data = Datastore.load();
var enabled = 0;
data.map(function(policy){ if(policy.enable == 1) { enabled++; } });
chrome.browserAction.setBadgeText({ "text": String(enabled) });
}
chrome.extension.onMessage.addListener(
function(message){
if(message === "DataUpdated") {
changeIconBadgeText();
chrome.webRequest.onBeforeSendHeaders.removeListener(beforeEventCallback);
setupEventMonitor();
}
}
);
changeIconBadgeText();
setupEventMonitor();