added proxy option for external links

js/interface_common.js

@@ -343,7 +343,7 @@ var postExpandFunction = function( e, postLi )
                 var link = originalPost.find("a[rel='nofollow']");
                 /*is there any link in the post?*/
                 if (link.siblings().length > 0){
-                    if (/(\.jpg)|(\.gif)|(\.png)|(\.jpeg)/.test(link.html().toLowerCase())){
+                    if (/((\.jpe{0,1}g)|(\.gif)|(\.png))$/i.test(link.html())){
                         $(previewContainer).append($("<img src='" + link.html() + "' class='image-preview' />"));
                     }
                 }

js/options.js

@@ -211,6 +211,38 @@ var TwisterOptions = function()
         });
     }
 
+    this.getUseProxyOpt = function () {
+        return $.Options.getOption('useProxy', 'disable');
+    }
+
+    this.setUseProxyOpt = function () {
+        $('#useProxy')[0].value = this.getUseProxyOpt();
+
+        if (this.getProxyOpt() === 'disable')
+            $('#useProxyForImgOnly').attr('disabled','disabled');
+
+        $('#useProxy').on('change', function () {
+            $.Options.setOption(this.id, this.value);
+
+            if (this.value === 'disable')
+                $('#useProxyForImgOnly').attr('disabled','disabled');
+            else
+                $('#useProxyForImgOnly').removeAttr('disabled');
+        });
+    }
+
+    this.getUseProxyForImgOnlyOpt = function () {
+        return $.Options.getOption('useProxyForImgOnly', false);
+    }
+
+    this.setUseProxyForImgOnlyOpt = function () {
+        $('#useProxyForImgOnly')[0].checked = this.getUseProxyForImgOnlyOpt();
+
+        $('useProxyForImgOnly').on('change', function () {
+            $.Options.setOption(this.id, this.value);
+        });
+    }
+
     this.InitOptions = function() {
         this.soundNotifOptions();
         this.volumeControl();

js/twister_formatpost.js

@@ -195,7 +195,25 @@ function htmlFormatMsg( msg, output, mentions ) {
                     url = url.replace('&', '&');
                     var extLinkTemplate = $("#external-page-link-template").clone(true);
                     extLinkTemplate.removeAttr("id");
-                    extLinkTemplate.attr("href",url);
+                    var proxy = false;
+                    if ($.Options.getOption('useProxy') === 'disable'){
+                        extLinkTemplate.attr("href",url);
+                    } else if ($.Options.getOption('useProxyForImgOnly')){
+                        if ($.Options.getOption('displayPreview') !== 'disable' && /((\.jpe{0,1}g)|(\.gif)|(\.png))$/i.test(url))
+                            proxy = true;
+                    } else {
+                        proxy = true;
+                    }
+
+                    if (proxy){
+                        //proxy alternatives may be added to options page...
+                        if ($.Options.getOption('useProxy') === 'ssl-proxy-my-addr') {
+                            extLinkTemplate.attr('href', 'https://ssl-proxy.my-addr.com/' +
+                                                         url.substring(0, url.indexOf(':')) +
+                                                         url.substr(url.indexOf('/') + 1));
+                        }
+                    }
+
                     extLinkTemplate.text(url);
                     extLinkTemplate.attr("title",url);
                     output.append(extLinkTemplate);

options.html

@@ -137,6 +137,7 @@
     <div class="posts-display">
       <div class="module">
         <p class="label"> Posts display </p>
+        <br/>
         <div>
             <form action="" id="lineFeedsOpt">
               <p>Line feeds</p>
@@ -146,6 +147,7 @@
               </select>
             </form>
         </div>
+        <br/>
         <div>
             <form action="" id="showPreviewOpt">
               <p class="label">Inline image preview</p>
@@ -155,6 +157,17 @@
               </select>
             </form>
         </div>
+        <br/>
+        <div>
+            <form action="" id="useProxyOpt">
+                <p class="label">Use links behind a proxy</p>
+                <select name="" id="useProxy">
+                    <option value="disable">none</option>
+                    <option value="ssl-proxy-my-addr">ssl-proxy.my-addr.com</option>
+                </select>
+                <input name="" id="useProxyForImgOnly" type="checkbox" /> Use proxy for image preview only
+            </form>
+        </div>
       </div>
     </div>