[flashproxy/master] Add basic outline for JS proxy. - tor-commits

9 Apr 2012

commit 4e5cfcee07dc68aa6774fe81704a224904a47b2e
Author: David Fifield david@bamsoftware.com
Date:   Sun Mar 11 23:26:21 2012 -0700
Add basic outline for JS proxy.
---
 embed.html    |    9 ++++
 flashproxy.js |  132 +++++++++++++++++++-------------------------------------
 2 files changed, 54 insertions(+), 87 deletions(-)

diff --git a/embed.html b/embed.html
index ce3c1b4..de90209 100644
--- a/embed.html
+++ b/embed.html
@@ -7,6 +7,15 @@ body {
    margin: 0;
    padding: 0;
 }
+#flashproxy-badge.debug {
+	position: absolute;
+	left: 0;
+	top: 0;
+	width: 100%;
+	height: 100%;
+	color: #44cc44;
+	background-color: #001f0f;
+}
 </style>
 </head>
 <body>
diff --git a/flashproxy.js b/flashproxy.js
index 30ad616..ab55f07 100644
--- a/flashproxy.js
+++ b/flashproxy.js
@@ -1,3 +1,40 @@
+function FlashProxy()
+{
+    this.debug_div = document.createElement("div");
+    this.debug_div.className = "debug";
+
+    this.badge_elem = this.debug_div;
+    this.badge_elem.setAttribute("id", "flashproxy-badge");
+
+    this.puts = function(s) {
+        if (this.debug_div) {
+            this.debug_div.appendChild(document.createTextNode(s));
+            this.debug_div.appendChild(document.createElement("br"));
+        }
+    };
+
+    this.start = function() {
+        this.puts("Hello world!");
+    }
+}
+
+/* This is the non-functional badge that occupies space when
+   flashproxy_should_disable decides that the proxy shouldn't run. */
+function DummyFlashProxy()
+{
+    var img;
+
+    img = document.createElement("img");
+    img.setAttribute("src", "https://crypto.stanford.edu/flashproxy/badge.png");
+    img.setAttribute("border", 0);
+    img.setAttribute("id", "flashproxy-badge");
+
+    this.badge_elem = img;
+
+    this.start = function() {
+    };
+}
+
 /* Are circumstances such that we should self-disable and not be a
    proxy? We take a best-effort guess as to whether this device runs on
    a battery or the data transfer might be expensive.
@@ -36,97 +73,15 @@ function flashproxy_should_disable()
     return false;
 }
-/* Create and return a DOM fragment:
-<span id=BADGE_ID>
-<a href=FLASHPROXY_INFO_URL>
-    child
-</a>
-</span>
-*/
-function flashproxy_make_container(child)
-{
-    var BADGE_ID = "flashproxy-badge";
-    var FLASHPROXY_INFO_URL = "https://crypto.stanford.edu/flashproxy/";
-
-    var container;
-    var a;
-
-    container = document.createElement("span");
-    container.setAttribute("id", "flashproxy-badge");
-    a = document.createElement("a");
-    a.setAttribute("href", FLASHPROXY_INFO_URL);
-    a.appendChild(child)
-    container.appendChild(a);
-
-    return container;
-}
-
-/* Create and return a DOM fragment:
-<object width=WIDTH height=HEIGHT>
-    <param name="movie" value=SWFCAT_URL>
-    <param name="flashvars" value=FLASHVARS>
-    <embed src=SWFCAT_URL width=WIDTH height=HEIGHT flashvars=FLASHVARS></embed>
-</object>
-*/
-function flashproxy_make_badge()
-{
-    var WIDTH = 70;
-    var HEIGHT = 23;
-    var FLASHVARS = "";
-    var SWFCAT_URL = "https://crypto.stanford.edu/flashproxy/swfcat.swf";
-
-    var object;
-    var param;
-    var embed;
-
-    object = document.createElement("object");
-    object.setAttribute("width", WIDTH);
-    object.setAttribute("height", HEIGHT);
-
-    param = document.createElement("param");
-    param.setAttribute("name", "movie");
-    param.setAttribute("value", SWFCAT_URL);
-    object.appendChild(param);
-    param = document.createElement("param");
-    param.setAttribute("name", "flashvars");
-    param.setAttribute("value", FLASHVARS);
-    object.appendChild(param);
-
-    embed = document.createElement("embed");
-    embed.setAttribute("src", SWFCAT_URL);
-    embed.setAttribute("width", WIDTH);
-    embed.setAttribute("height", HEIGHT);
-    embed.setAttribute("flashvars", FLASHVARS);
-    object.appendChild(embed);
-
-    return object;
-}
-
-/* Create and return a non-functional placeholder badge DOM fragment:
-<img src=BADGE_IMAGE_URL border="0">
-*/
-function flashproxy_make_dummy_badge()
-{
-    var BADGE_IMAGE_URL = "https://crypto.stanford.edu/flashproxy/badge.png";
-
-    var img;
-
-    img = document.createElement("img");
-    img.setAttribute("src", BADGE_IMAGE_URL);
-    img.setAttribute("border", 0);
-
-    return img;
-}
-
 function flashproxy_badge_insert()
 {
-    var badge;
+    var fp;
     var e;
if (flashproxy_should_disable()) {
-        badge = flashproxy_make_dummy_badge();
+        fp = new DummyFlashProxy();
     } else {
-        badge = flashproxy_make_badge();
+        fp = new FlashProxy();
     }
/* http://intertwingly.net/blog/2006/11/10/Thats-Not-Write for this trick to
@@ -135,7 +90,10 @@ function flashproxy_badge_insert()
     while (e.lastChild && e.lastChild.nodeType == 1) {
         e = e.lastChild;
     }
-    e.parentNode.appendChild(flashproxy_make_container(badge));
+    e.parentNode.appendChild(fp.badge_elem);
+
+    return fp;
 }
-flashproxy_badge_insert();
+fp = flashproxy_badge_insert();
+fp.start();

    