ABP/Android JavaScript code

assets/js/XMLHttpRequest.jsm

Index: assets/js/XMLHttpRequest.jsm
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new file mode 100644
--- /dev/null
+++ b/assets/js/XMLHttpRequest.jsm
@@ -0,0 +1,170 @@
+
+XMLHttpRequest = function()
+{
+  this.headers = {};
+  this.responseHeaders = {};
+};
+
+XMLHttpRequest.UNSENT = 0;
+XMLHttpRequest.OPEN = 1;
+XMLHttpRequest.HEADERS_RECEIVED = 2;
+XMLHttpRequest.LOADING = 3;
+XMLHttpRequest.DONE = 4;
+
+XMLHttpRequest.prototype =
+{
+  open: function(method, url, async, user, password)
+  {
+    this.async = (typeof async == "undefined" || async) ? true : false;
+    this.method = method || "GET";
+    this.url = url;
+    this.readyState = XMLHttpRequest.OPEN;
+    this.onreadystatechange();
+  },
+  setRequestHeader: function(header, value)
+  {
+    this.headers[header] = value;
+  },
+  send: function(data)
+  {
+    var self = this;
+    
+    Android.httpSend(self.method, self.url, self.headers, self.async, handleResponse);
+
+    function handleResponse(code, message, headers, text)
+    {
+      if (self.aborted)
+        return;
+      if (headers != null)
+      {
+        for (var i = 0; i < headers.length; i++)
+        {
+          var headerName = headers[i][0];
+          var headerValue = headers[i][1];
+          if (headerName)
+            self.responseHeaders[headerName] = headerValue;
+        }
+      }
+      self.readyState = XMLHttpRequest.HEADERS_RECEIVED;
+      self.onreadystatechange();
+
+      self.readyState = XMLHttpRequest.LOADING;
+      self.onreadystatechange();
+      self.status = parseInt(code) || undefined;
+      self.statusText = message || "";
+
+      self.responseText = text;
+
+      self.readyState = XMLHttpRequest.DONE;
+      self.onreadystatechange();
+      self.triggerListeners("load");
+      self.triggerListeners("loadend");
+    }
+  },
+  abort: function()
+  {
+    this.aborted = true;
+    this.triggerListeners("abort");
+    this.readyState = XMLHttpRequest.DONE;
+    this.onreadystatechange();
+  },
+  onreadystatechange: function(){},
+  getResponseHeader: function(header)
+  {
+    if (this.readyState < XMLHttpRequest.LOADING)
+      throw new Error("INVALID_STATE_ERR");
+    else
+    {
+      var lcHeader = header.toLowerCase();
+      var returnedHeaders = [];
+      for (var rHeader in this.responseHeaders)

[Felix Dahlke, 2012/11/13 07:53:14]

You might want to make sure that you're not iterating over any prototype
properties here, like this:

for (var rHeader in this.responseHeaders)
  if (this.responseHeaders.hasOwnProperty(rHeader)
      && rHeader.toLowerCase() == lcHeader)
    returnedHeaders.push(this.responseHeaders[rHeader]);

But it does not seem likely that any prototype property would coincide with a
header field name.

[Andrey Novikov, 2012/11/13 09:44:54]

Done.

+      {
+        if (rHeader.toLowerCase() == lcHeader)
+          returnedHeaders.push(this.responseHeaders[rHeader]);
+      }
+
+      if (returnedHeaders.length)
+        return returnedHeaders.join(", ");
+    }
+
+    return null;
+  },
+  getAllResponseHeaders: function(header)
+  {
+    if (this.readyState < 3)
+      throw new Error("INVALID_STATE_ERR");
+    else
+    {
+      var returnedHeaders = [];
+
+      for (var header in this.responseHeaders)
+        returnedHeaders.push(header + ": " + this.responseHeaders[header]);
+
+      return returnedHeaders.join("\r\n");
+    }
+  },
+  overrideMimeType: function(mime) {},
+  addEventListener: function(type, listener, useCapture)
+  {
+    var listeners = null;
+
+    if (type == "progress")
+      listeners = this.progressEventListeners;
+    else if (type == "loadend")
+      listeners = this.loadendEventListeners;
+    else if (type == "load")
+      listeners = this.loadEventListeners;
+    else if (type == "error")
+      listeners = this.errorEventListeners;
+    else if (type == "abort")
+      listeners = this.abortEventListeners;
+
+    if (listeners == null || listeners.indexOf(listener) >= 0)
+        return;
+    listeners.push(listener);
+  },
+  triggerListeners: function(type)
+  {
+    var listeners = null;
+
+    if (type == "progress")
+      listeners = this.progressEventListeners;
+    else if (type == "loadend")
+      listeners = this.loadendEventListeners;
+    else if (type == "load")
+      listeners = this.loadEventListeners;
+    else if (type == "error")
+      listeners = this.errorEventListeners;
+    else if (type == "abort")
+      listeners = this.abortEventListeners;
+
+    for (var i = 0; i < listeners.length; i++)
+    {
+      var listener = listeners[i];
+      listener();
+    }
+  },
+  progressEventListeners: [],
+  loadendEventListeners: [],
+  loadEventListeners: [],
+  errorEventListeners: [],
+  abortEventListeners: [],
+  aborted: false,
+  async: true,
+  readyState: XMLHttpRequest.UNSENT,
+  responseText: "",
+  status: 0
+};
+
+XMLHttpRequest.prototype.channel =
+{
+  status: -1,
+  notificationCallbacks: {},
+  loadFlags: 0,
+  INHIBIT_CACHING: 0,
+  VALIDATE_ALWAYS: 0,
+  QueryInterface: function()
+  {
+    return this;
+  }
+};