init

data/content.js

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+function set_cookies(cookies) {
+    for (let cookie of cookies) {
+        browser.cookies.set(cookie)
+    }
+}
+
+
+function set_proxy(PROXY) {
+    // PROXY = {
+    //     "type": "http",
+    //     "host": "IP address",
+    //     "port": "PORT",
+    //     "username": "USER NAME",
+    //     "password": "PASSWORD"
+    // }
+    const TARGET = "<all_urls>";
+    const CREDENTIALS = {
+        username: PROXY.username,
+        password: PROXY.password
+    }
+    const pendingRequests = [];
+
+    function handleProxyRequest(requestInfo) {
+        return {type: PROXY.type, host: PROXY.host, port: PROXY.port};
+    }
+
+    // A request has completed.
+    // We can stop worrying about it.
+    function completed(requestDetails) {
+        var index = pendingRequests.indexOf(requestDetails.requestId);
+        if (index > -1) {
+            pendingRequests.splice(index, 1);
+        }
+    }
+
+    function provideCredentialsSync(requestDetails) {
+        // If we have seen this request before, then
+        // assume our credentials were bad, and give up.
+        if (pendingRequests.indexOf(requestDetails.requestId) != -1) {
+            console.log(`bad credentials for: ${requestDetails.requestId}`);
+            return {cancel: true};
+        }
+        pendingRequests.push(requestDetails.requestId);
+        console.log(`providing credentials for: ${requestDetails.requestId}`);
+        return {authCredentials: CREDENTIALS};
+    }
+
+    browser.proxy.onRequest.addListener(
+        handleProxyRequest,
+        {urls: [TARGET]}
+    );
+
+    browser.webRequest.onAuthRequired.addListener(
+        provideCredentialsSync,
+        {urls: [TARGET]},
+        ["blocking"]
+    );
+
+    browser.webRequest.onCompleted.addListener(
+        completed,
+        {urls: [TARGET]}
+    );
+
+    browser.webRequest.onErrorOccurred.addListener(
+        completed,
+        {urls: [TARGET]}
+    );
+}
+
+
+function main() {
+
+    function setProxy(result) {
+        if (result.proxy) {
+            console.log("Setup proxy...");
+            set_proxy(result.proxy);
+        }
+    }
+
+    function setCookies(result) {
+        if (result.cookies) {
+            console.log("Setup cookies...");
+            set_cookies(result.cookies);
+        }
+    }
+
+    function onError(error) {
+        console.log(`Error: ${error}`);
+    }
+
+    let proxy = browser.storage.sync.get("proxy");
+    proxy.then(setProxy, onError);
+
+    let cookies = browser.storage.sync.get("cookies");
+    cookies.then(setCookies, onError);
+}
+
+
+browser.runtime.onMessage.addListener(function(message, sender, reply) {
+    if (message.update) {
+        main();
+    }
+});

data/options.html

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+<html>
+<head>
+    <meta charset="utf-8"/>
+</head>
+<body>
+    <form id="options_form" method="POST">
+        <input type="text" name="type" id="type">
+        <input type="text" name="host" id="host">
+        <input type="text" name="port" id="port">
+        <input type="text" name="username" id="username">
+        <input type="text" name="password" id="password">
+        <input id="submit" type="submit" value="Submit">
+        <textarea id="cookies" name="cookies"></textarea>
+    </form>
+    <script src="options.js"></script>
+</body>
+</html>

data/options.js

@@ -0,0 +1,58 @@
+function saveOptions(e) {
+    e.preventDefault();
+    let cookies = [];
+    try {
+        cookies = JSON.parse(document.getElementById("cookies").value);
+    } catch {};
+    console.log(cookies)
+    browser.storage.sync.set({
+        proxy: {
+            "type": document.getElementById("type").value,
+            "host": document.getElementById("host").value,
+            "port": document.getElementById("port").value,
+            "username": document.getElementById("username").value,
+            "password": document.getElementById("password").value
+        },
+        cookies: cookies
+    });
+}
+
+
+function restoreOptions() {
+
+    function setCurrentProxy(result) {
+        if (result.proxy) {
+            document.getElementById("type").value = result.proxy.type;
+            document.getElementById("host").value = result.proxy.host;
+            document.getElementById("port").value = result.proxy.port;
+            document.getElementById("username").value = result.proxy.username;
+            document.getElementById("password").value = result.proxy.password;
+        }
+    }
+
+    function setCurrentCookies(result) {
+        if (result.cookies) {
+            document.getElementById("cookies").value = JSON.stringify(result.cookies);
+        }
+    }
+
+    function onError(error) {
+        console.log(`Error: ${error}`);
+    }
+
+    let proxy = browser.storage.sync.get("proxy");
+    proxy.then(setCurrentProxy, onError);
+
+    let cookies = browser.storage.sync.get("cookies");
+    cookies.then(setCurrentCookies, onError);
+}
+
+
+function notifyExtension(e) {
+    browser.runtime.sendMessage({"update": true});
+}
+
+
+document.addEventListener("DOMContentLoaded", restoreOptions);
+document.getElementById("options_form").addEventListener("submit", saveOptions);
+window.addEventListener("submit", notifyExtension);