Merge branch 'master' into plugin-framework

1 files changed, 294 insertions, 0 deletions

diff --git a/infrastructure/framework-src/modules/global/response.js b/infrastructure/framework-src/modules/global/response.js
new file mode 100644
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+++ b/infrastructure/framework-src/modules/global/response.js
@@ -0,0 +1,294 @@
+/**
+ * Copyright 2009 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @fileOverview Helpers for the HTTP response.
+ */
+
+/** @ignore */
+function _cx() { return appjet.context };
+
+/** @ignore */
+function _cookiestring(c) {
+  var x = '';
+  if (!c.name) { throw new Error('cookie name is required'); }
+  if (!c.value) { c.value = ''; }
+  x += (c.name + '=' + escape(c.value));
+
+  // expires
+  if (c.expires instanceof Date) {
+    x += ('; expires='+_cookiedate(c.expires));
+  }
+  if (typeof(c.expires) == 'number') {
+    var today = (new Date()).valueOf();
+    var d = new Date(today + 86400000*c.expires);
+    x += ('; expires='+_cookiedate(d));
+  }
+
+  // domain
+  if (c.domain) { x += ('; domain='+c.domain); }
+
+  // path
+  if (c.path) { x += ('; path='+c.path); }
+
+  // secure
+  if (c.secure == true) { x += '; secure'; }
+
+  return x;
+};
+
+/** @ignore */
+function _cookiedate(d) {
+  var x = d.toGMTString();
+  var p = x.split(' ');
+  return [p[0], [p[1], p[2], p[3]].join('-'), p[4], p[5]].join(' ');
+};
+
+var response = {
+
+get isDefined() {
+  return _cx().response() != null;
+}
+
+};
+
+/**
+ * Halts the program immediately and returns 403 Forbidden error to the user.
+ */
+response.forbid = function() {
+  _cx().response().error(403, "Forbidden");
+};
+
+/**
+ * Halts the program immediately.
+ *
+ * @param {boolean} renderCurrentPage if false, an empty page will be rendered,
+ *   otherwise calls to print() so far will be displayed.  Either way, no more
+ *   code will be executed.
+ */
+response.stop = function(renderCurrentPage) {
+  _cx().response().stop();
+};
+
+/**
+ * Halts the program immediately and returns a 404 not found error to the user.
+ */
+response.notFound = function() {
+  _cx().response().error(404, "404: Not found");
+};
+
+/**
+ * Halts the program immediately and sends an HTTP redirect response (302),
+ * redirecting to the given path (relative or absolute).
+ *
+ * @param {string} path The new path
+ */
+response.redirect = function(path) {
+  if ((! path) && path != "") {
+    throw new Error("Invalid redirect: "+path);
+  }
+  if (path.indexOf('/') == 0) {
+    // make sure absolute URL has proper host/port
+    path = request.scheme+"://"+request.host+path;
+  }
+  _cx().response().redirect(path);
+};
+
+/**
+ * Sets the status code in the HTTP response.
+ *
+ * @param {number} newCode
+ */
+response.setStatusCode = function(newCode) {
+  _cx().response().setStatusCode(newCode);
+};
+response.getStatusCode = function() {
+  return _cx().response().getStatusCode();
+};
+
+response.sendError = function(errorCode, errorHtml) {
+  _cx().response().error(errorCode, errorHtml);
+};
+
+response.reset = function() {
+  _cx().response().reset();
+};
+
+/**
+ * Sets any header of the HTTP response.
+ *
+ * @example
+response.setHeader('Cache-Control', 'no-cache');
+ *
+ * @param {string} name
+ * @param {string} value
+ */
+response.setHeader = function(name, value) {
+  _cx().response().setHeader(name, value);
+};
+
+/**
+ * Adds the name,value pair to the headers.  Useful for headers that are
+ * allowed to repeat, such as Set-Cookie.
+ *
+ * @param {string} name
+ * @param {string} value
+ */
+response.addHeader = function(name, value) {
+  _cx().response().addHeader(name, value);
+};
+
+/**
+ * Returns the value of a previously-set header. Useful in the
+ * postRequestHandler to see values of headers set during normal
+ * request processing.
+ *
+ * @param {string} name
+ * @return {array} An array of header values. Empty array if none set.
+ */
+response.getHeader = function(name) {
+  if (! this.isDefined) {
+    return [];
+  } else {
+    return _cx().response().getHeader(name);
+  }
+};
+
+/**
+ * Removes all instances of a header of the HTTP response.
+ *
+ * @param {string} name
+ */
+response.removeHeader = function(name) {
+  _cx().response().removeHeader(name);
+};
+
+/**
+ * Low-level hook for writing raw data to the response.
+ * @param {string} data will be written, verbatim, to the HTTP resonse.
+ */
+response.write = function(data) {
+  _cx().response().write(data);
+};
+
+/**
+ * Low-level hook for writing raw byte data to the response. Especially
+ * useful for writing the result of a <code>wget</code> of image data,
+ * or writing an uploaded file.
+ * @param {string} data will be written, verbatim, to the HTTP resonse.
+ */
+response.writeBytes = function(data) {
+  _cx().response().writeBytes(data);
+};
+
+//----------------------------------------------------------------
+// Cookies!
+//----------------------------------------------------------------
+
+/**
+ * Set a cookie in the response.
+ *
+ * @example
+response.setCookie({
+  name: "SessionID",
+  value: "25",
+  secure: true,
+  expires: 14 // 14 days
+});
+ *
+ * @param {object} cookieObject This may contain any of the following:
+<ul>
+  <li>name (required): The name of the cookie</li>
+  <li>value (required): The value of the cookie.  (Note: this value will be escaped).
+  <li>expires (optional): If an integer, means number of days until it expires;
+        if a Date object, means exact date on which to expire.</li>
+  <li>domain (optional): The cookie domain</li>
+  <li>path (optional): To restrict the cookie to a specific path.</li>
+  <li>secure (optional): Whether this cookie should only be sent securely.</li>
+</ul>
+ */
+response.setCookie = function(cookieObject) {
+  this.addHeader('Set-Cookie', _cookiestring(cookieObject));
+
+  var p3pHeader = this.getHeader("P3P");
+  if ((! p3pHeader) || p3pHeader.length == 0) {
+    // The existence of this "privacy policy" header allows cookies set on
+    // pages inside iframes to be accepted by IE.  (This is some kind of
+    // default policy copied from an example online. -- dgreensp)
+    this.setHeader('P3P', 'CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"');
+  }
+};
+
+/**
+ * Tells the client to delete the cookie of the given name (by setting
+ * its expiration time to zero).
+ * @param {string} name The name of the cookie to delete.
+ */
+response.deleteCookie = function(name) {
+  this.setCookie({name: name, value: '', expires: 0});
+};
+
+function _trim(s) {
+  return String((new java.lang.String(s)).trim());
+}
+
+response.getCookie = function(name) {
+  var cookieHeaders = this.getHeader('Set-Cookie');
+  if (! cookieHeaders) { return; }
+  for (var i = 0; i < cookieHeaders.length; ++i) {
+    if (_trim(cookieHeaders[i].split("=")[0]) == name)
+      return _trim(cookieHeaders[i].split(";")[0].split("=")[1]);
+  }
+};
+
+/**
+ * Sets the Content-Type header of the response.  If the content-type includes
+ * a charset, that charset is used to send the response.
+ * @param {string} contentType the new content-type
+ */
+response.setContentType = function(contentType) {
+  _cx().response().setContentType(contentType);
+};
+
+response.getCharacterEncoding = function() {
+  return _cx().response().getCharacterEncoding();
+}
+
+response.neverCache = function() {
+  // be aggressive about not letting the response be cached.
+  var that = this;
+  function sh(k,v) { that.setHeader(k,v); }
+  sh('Expires', 'Sat, 18 Jun 1983 07:07:07 GMT');
+  sh('Last-Modified', (new Date()).toGMTString());
+  sh('Cache-Control', ('no-store, no-cache, must-revalidate, '+
+		       'post-check=0, pre-check=0'));
+  sh('Pragma', 'no-cache');
+};
+
+response.alwaysCache = function() {
+  var that = this;
+  function sh(k,v) { that.setHeader(k,v); }
+  that.removeHeader('Last-Modified');
+  that.removeHeader('Pragma');
+  var futureDate = new Date();
+  futureDate.setTime(Date.now() + 315360000000);
+  sh('Expires', futureDate.toGMTString());
+  sh('Cache-Control', 'max-age=315360000');
+};
+
+response.setGzip = function(gzip) {
+  _cx().response().setGzip(gzip);
+}