fixes #38

extension/common.js

@@ -15,7 +15,8 @@ var prefs = {
   mode: 'blacklist',
   color: '#ffa643',
   cache: true,
-  exactMatch: false
+  exactMatch: false,
+  protected: ['google.com/recaptcha', 'gstatic.com/recaptcha']
 };
 chrome.storage.local.get(prefs, ps => {
   Object.assign(prefs, ps);
@@ -256,6 +257,9 @@ var onBeforeSendHeaders = ({tabId, url, requestHeaders, type}) => {
   if (cache[tabId] === true) {
     return;
   }
+  if (prefs.protected.some(s => url.indexOf(s) !== -1)) {
+    return {};
+  }
   const str = (cache[tabId] || ua.object(tabId)).userAgent;
   if (str) {
     for (let i = 0, name = requestHeaders[0].name; i < requestHeaders.length; i += 1, name = requestHeaders[i].name) {

extension/data/options/index.html

@@ -13,6 +13,9 @@
       text-decoration: underline;
       text-decoration-style: dashed;
     }
+    .spacer {
+      padding-bottom: 10px;
+    }
   </style>
 </head>
 
@@ -24,7 +27,7 @@
       </td>
     </tr>
     <tr>
-      <td><textarea id="blacklist" rows="3" placeholder="e.g.: www.google.com, www.bing.com"></textarea></td>
+      <td class="spacer"><textarea id="blacklist" rows="3" placeholder="e.g.: www.google.com, www.bing.com"></textarea></td>
     </tr>
     <tr>
       <td>
@@ -32,7 +35,7 @@
       </td>
     </tr>
     <tr>
-      <td><textarea id="whitelist" rows="3" placeholder="e.g.: www.google.com, www.bing.com"></textarea></td>
+      <td class="spacer"><textarea id="whitelist" rows="3" placeholder="e.g.: www.google.com, www.bing.com"></textarea></td>
     </tr>
     <tr>
       <td>
@@ -40,16 +43,22 @@
       </td>
     </tr>
     <tr>
-      <td><textarea id="custom" rows="5" wrap="off"></textarea></td>
+      <td class="spacer"><textarea id="custom" rows="5" wrap="off"></textarea></td>
     </tr>
     <tr>
-      <td><label><input type="checkbox" id="cache"> Use caching to improve performance (recommended value is true). Uncheck this option only if you are using the custom mode and also you need the user-agent string to be altered from the provided list on every single request.</label></td>
+      <td class="spacer"><label><input type="checkbox" id="cache"> Use caching to improve performance (recommended value is true). Uncheck this option only if you are using the custom mode and also you need the user-agent string to be altered from the provided list on every single request.</label></td>
     </tr>
     <tr>
-      <td><label><input type="checkbox" id="exactMatch"> Use exact matching (if checked, you will need to insert all sub-domains in the white-list and black-list modes to be considered. If unchecked, all the sub-domains are passing the matching condition (e.g: www.google.com passes the matching if google.com is in the list))</label></td>
+      <td class="spacer"><label><input type="checkbox" id="exactMatch"> Use exact matching (if checked, you will need to insert all sub-domains in the white-list and black-list modes to be considered. If unchecked, all the sub-domains are passing the matching condition (e.g: www.google.com passes the matching if google.com is in the list))</label></td>
     </tr>
     <tr>
-      <td><label><input type="checkbox" id="faqs"> Open FAQs page on updates</label></td>
+      <td class="spacer"><label><input type="checkbox" id="faqs"> Open FAQs page on updates</label></td>
+    </tr>
+    <tr>
+      <td>A comma-separated list of keywords that the extension should not spoof the user-agent header. Use this list to protect URLs that contain these protected keywords. Each keyword need to be at least 5 char long.</td>
+    </tr>
+    <tr>
+      <td><textarea id="protected" rows="3" wrap="off"></textarea></td>
     </tr>
   </table>
   <p>

extension/data/options/index.js

@@ -10,9 +10,9 @@ function notify(msg, period = 750) {
 
 function prepare(str) {
   return str.split(/\s*,\s*/)
-  .map(s => s.replace('http://', '')
+    .map(s => s.replace('http://', '')
       .replace('https://', '').split('/')[0].trim())
-  .filter((h, i, l) => h && l.indexOf(h) === i);
+    .filter((h, i, l) => h && l.indexOf(h) === i);
 }
 
 function save() {
@@ -35,7 +35,8 @@ function save() {
     blacklist: prepare(document.getElementById('blacklist').value),
     whitelist: prepare(document.getElementById('whitelist').value),
     custom,
-    mode: document.querySelector('[name="mode"]:checked').value
+    mode: document.querySelector('[name="mode"]:checked').value,
+    protected: document.getElementById('protected').value.split(/\s*,\s*/).filter(s => s.length > 4)
   }, () => {
     restore();
     notify('Options saved.');
@@ -50,7 +51,8 @@ function restore() {
     mode: 'blacklist',
     whitelist: [],
     blacklist: [],
-    custom: {}
+    custom: {},
+    protected: ['google.com/recaptcha', 'gstatic.com/recaptcha']
   }, prefs => {
     document.getElementById('exactMatch').checked = prefs.exactMatch;
     document.getElementById('faqs').checked = prefs.faqs;
@@ -59,6 +61,7 @@ function restore() {
     document.getElementById('blacklist').value = prefs.blacklist.join(', ');
     document.getElementById('whitelist').value = prefs.whitelist.join(', ');
     document.getElementById('custom').value = JSON.stringify(prefs.custom, null, 2);
+    document.getElementById('protected').value = prefs.protected.join(', ');
   });
 }
 document.addEventListener('DOMContentLoaded', restore);