cervantes' web browser auto-proxy script

2004-08-24 20:58:31 +00:00
parent 84f8931ddd
commit cbe12adbe6
1 changed files with 147 additions and 0 deletions
--- a/apps/proxyscript/i2pProxy.pac
+++ b/apps/proxyscript/i2pProxy.pac
@ -0,0 +1,147 @@
+/*******************************************************
+** Proxy Auto Configure Script with I2P Host Detection.
+**
+** Author:  Cervantes
+** License: Public Domain
+** Date:    11 May 2004
+**
+** Revised: 17 May 2004
+** Added:
+**       Ability for the user to control the proxy
+**       status on a per browser-session basis.
+********************************************************/
+
+/* C O N F I G U R A T I O N
+*/ 
+
+/* Replace normal with "PROXY yourproxy:port" if you run
+** behind a Proxy Server by default.
+*/ 
+var normal = "DIRECT";
+
+/* Specify the I2P proxy connection details here.
+*/ 
+
+var i2pProxy = "PROXY 127.0.0.1:4444";
+
+/*   Set the default status of proxy detection here:
+**
+**
+**   [1] "auto"	=> Proxy will be used automatically if
+**                 '->  an ".i2p" url is detected.
+**                 '->  You will only be anonymous for ".i2p" domains.
+**
+**   [2] "on"	=> Proxy is enabled all the time. (safest)
+**                 '->  NB. Normal web available only via
+**                 '->  i2p outproxies.
+**                 '->  You can be fairly confident of anonymity.
+**
+**   [3] "off"	=> Completely Bypass the proxy and therefore i2p.
+**                 '->  no i2p sites will be accessible...
+**                 '->  ...your browsing habits can potentially
+**                 '->  be traced back to you!
+**
+*/
+
+var proxyStatus = "auto";
+
+/*   By setting statusKeyword to "all" you can set these options at runtime
+**   for the duration of the browser session by entering special commands
+**   into your browser address bar.
+**   
+**   Due to limitations in the way proxy scripting works, a malicious site
+**   could change your status mode by linking to command keywords...
+**   eg. <img src="i2p.off" ...
+**   This is why the default setting for statusKeyword is "limited", which only
+**   allows you to set the proxy status to "on".
+**
+**   [1] "all"	=> All proxy status urls are available.
+**               '->  i2p.on, i2p.off, i2p.auto (respective to proxyStatus settings)
+**               '->  WARNING: Setting "all" is a big risk to your anonymity!
+**               
+**   [2] "limited"  => Only i2p.on is available..
+**                      '->  This setting lasts for the duration of the browser setting.
+**                      '->  You have to close your browser in order to revert to
+**                      '->  your default proxyStatus configuration.
+**
+**   [3] "off"  => No command urls available.
+**               '->  The status mode can only be altered by editing the above
+**               '->  proxyStatus setting. (safest)
+**
+*/
+
+var statusKeyword = "limited";
+
+/*
+**   By default if proxyStatus is set to "auto" the config script
+**   will fall back to your normal connection settings if the
+**   i2p proxy is offline. This is handy for browsing your locally
+**   hosted eepsites when your router is not running (for instance).
+**   However this can mean that requests to external eepsites could
+**   be forwarded to the outweb and potentially compromise some of
+**   your rights to anonymity.
+**   Setting "true" here enables strict mode where all requests to ".i2p"
+**   sites will be rejected if the i2p proxy is offline. (safest)
+*/
+
+var strict = false;
+
+
+/* E N D   C O N F I G U R A T I O N
+*/
+
+
+/* Allows the proxy to fallback on "normal" settings
+** '-> if the i2p router is offline.
+*/
+
+if (strict == false) {
+	i2pProxy = i2pProxy + "; " + normal;
+}
+
+/* This function gets called every time a url is submitted
+*/
+
+function FindProxyForURL(url, host) {
+    /* checks for a special command url that
+    ** '-> changes the status of the proxy script.
+    */
+
+   if (statusKeyword != "off") {
+      if (host == "i2p.off" && statusKeyword == "all") {
+         /*Proxy is bypassed - outweb available only
+         */
+         proxyStatus = "off";
+      } else if (host == "i2p.auto" && statusKeyword == "all") {
+          /* Proxy is used only for .i2p hosts otherwise
+          ** '-> browse as normal.
+          */
+          proxyStatus = "auto";
+      } else if (host == "i2p.on" && statusKeyword == "limited") {
+          /* Only I2P traffic is accepted.
+          */
+          proxyStatus = "on";
+      } 
+   }
+
+   if (proxyStatus == "off") {
+       /* Proxy is completely bypassed.
+       */
+       return normal;
+   } else if (proxyStatus == "on") {
+       /* All requests are forward to the proxy.
+       */
+       return i2pProxy;
+   }
+   
+   host = host.toLowerCase();
+   /* check tld for "i2p" - if found then redirect
+   ** '-> request to the i2p proxy
+   */
+   
+   if (shExpMatch(host, "*.i2p")) {    // seems more reliable than:
+       return i2pProxy;                     // dnsDomainIs(host, ".i2p") || 
+   } else {                                      // i2pRegex.test(host)
+       return normal;
+   }
+}