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app_vue/node_modules/node-forge/lib/xhr.js

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+/**
+ * XmlHttpRequest implementation that uses TLS and flash SocketPool.
+ *
+ * @author Dave Longley
+ *
+ * Copyright (c) 2010-2013 Digital Bazaar, Inc.
+ */
+var forge = require('./forge');
+require('./socket');
+require('./http');
+
+/* XHR API */
+var xhrApi = module.exports = forge.xhr = forge.xhr || {};
+
+(function($) {
+
+// logging category
+var cat = 'forge.xhr';
+
+/*
+XMLHttpRequest interface definition from:
+http://www.w3.org/TR/XMLHttpRequest
+
+interface XMLHttpRequest {
+  // event handler
+  attribute EventListener onreadystatechange;
+
+  // state
+  const unsigned short UNSENT = 0;
+  const unsigned short OPENED = 1;
+  const unsigned short HEADERS_RECEIVED = 2;
+  const unsigned short LOADING = 3;
+  const unsigned short DONE = 4;
+  readonly attribute unsigned short readyState;
+
+  // request
+  void open(in DOMString method, in DOMString url);
+  void open(in DOMString method, in DOMString url, in boolean async);
+  void open(in DOMString method, in DOMString url,
+            in boolean async, in DOMString user);
+  void open(in DOMString method, in DOMString url,
+            in boolean async, in DOMString user, in DOMString password);
+  void setRequestHeader(in DOMString header, in DOMString value);
+  void send();
+  void send(in DOMString data);
+  void send(in Document data);
+  void abort();
+
+  // response
+  DOMString getAllResponseHeaders();
+  DOMString getResponseHeader(in DOMString header);
+  readonly attribute DOMString responseText;
+  readonly attribute Document responseXML;
+  readonly attribute unsigned short status;
+  readonly attribute DOMString statusText;
+};
+*/
+
+// readyStates
+var UNSENT = 0;
+var OPENED = 1;
+var HEADERS_RECEIVED = 2;
+var LOADING = 3;
+var DONE = 4;
+
+// exceptions
+var INVALID_STATE_ERR = 11;
+var SYNTAX_ERR = 12;
+var SECURITY_ERR = 18;
+var NETWORK_ERR = 19;
+var ABORT_ERR = 20;
+
+// private flash socket pool vars
+var _sp = null;
+var _policyPort = 0;
+var _policyUrl = null;
+
+// default client (used if no special URL provided when creating an XHR)
+var _client = null;
+
+// all clients including the default, key'd by full base url
+// (multiple cross-domain http clients are permitted so there may be more
+// than one client in this map)
+// TODO: provide optional clean up API for non-default clients
+var _clients = {};
+
+// the default maximum number of concurrents connections per client
+var _maxConnections = 10;
+
+var net = forge.net;
+var http = forge.http;
+
+/**
+ * Initializes flash XHR support.
+ *
+ * @param options:
+ *   url: the default base URL to connect to if xhr URLs are relative,
+ *     ie: https://myserver.com.
+ *   flashId: the dom ID of the flash SocketPool.
+ *   policyPort: the port that provides the server's flash policy, 0 to use
+ *     the flash default.
+ *   policyUrl: the policy file URL to use instead of a policy port.
+ *   msie: true if browser is internet explorer, false if not.
+ *   connections: the maximum number of concurrent connections.
+ *   caCerts: a list of PEM-formatted certificates to trust.
+ *   cipherSuites: an optional array of cipher suites to use,
+ *     see forge.tls.CipherSuites.
+ *   verify: optional TLS certificate verify callback to use (see forge.tls
+ *     for details).
+ *   getCertificate: an optional callback used to get a client-side
+ *     certificate (see forge.tls for details).
+ *   getPrivateKey: an optional callback used to get a client-side private
+ *     key (see forge.tls for details).
+ *   getSignature: an optional callback used to get a client-side signature
+ *     (see forge.tls for details).
+ *   persistCookies: true to use persistent cookies via flash local storage,
+ *     false to only keep cookies in javascript.
+ *   primeTlsSockets: true to immediately connect TLS sockets on their
+ *     creation so that they will cache TLS sessions for reuse.
+ */
+xhrApi.init = function(options) {
+  forge.log.debug(cat, 'initializing', options);
+
+  // update default policy port and max connections
+  _policyPort = options.policyPort || _policyPort;
+  _policyUrl = options.policyUrl || _policyUrl;
+  _maxConnections = options.connections || _maxConnections;
+
+  // create the flash socket pool
+  _sp = net.createSocketPool({
+    flashId: options.flashId,
+    policyPort: _policyPort,
+    policyUrl: _policyUrl,
+    msie: options.msie || false
+  });
+
+  // create default http client
+  _client = http.createClient({
+    url: options.url || (
+      window.location.protocol + '//' + window.location.host),
+    socketPool: _sp,
+    policyPort: _policyPort,
+    policyUrl: _policyUrl,
+    connections: options.connections || _maxConnections,
+    caCerts: options.caCerts,
+    cipherSuites: options.cipherSuites,
+    persistCookies: options.persistCookies || true,
+    primeTlsSockets: options.primeTlsSockets || false,
+    verify: options.verify,
+    getCertificate: options.getCertificate,
+    getPrivateKey: options.getPrivateKey,
+    getSignature: options.getSignature
+  });
+  _clients[_client.url.origin] = _client;
+
+  forge.log.debug(cat, 'ready');
+};
+
+/**
+ * Called to clean up the clients and socket pool.
+ */
+xhrApi.cleanup = function() {
+  // destroy all clients
+  for(var key in _clients) {
+    _clients[key].destroy();
+  }
+  _clients = {};
+  _client = null;
+
+  // destroy socket pool
+  _sp.destroy();
+  _sp = null;
+};
+
+/**
+ * Sets a cookie.
+ *
+ * @param cookie the cookie with parameters:
+ *   name: the name of the cookie.
+ *   value: the value of the cookie.
+ *   comment: an optional comment string.
+ *   maxAge: the age of the cookie in seconds relative to created time.
+ *   secure: true if the cookie must be sent over a secure protocol.
+ *   httpOnly: true to restrict access to the cookie from javascript
+ *     (inaffective since the cookies are stored in javascript).
+ *   path: the path for the cookie.
+ *   domain: optional domain the cookie belongs to (must start with dot).
+ *   version: optional version of the cookie.
+ *   created: creation time, in UTC seconds, of the cookie.
+ */
+xhrApi.setCookie = function(cookie) {
+  // default cookie expiration to never
+  cookie.maxAge = cookie.maxAge || -1;
+
+  // if the cookie's domain is set, use the appropriate client
+  if(cookie.domain) {
+    // add the cookies to the applicable domains
+    for(var key in _clients) {
+      var client = _clients[key];
+      if(http.withinCookieDomain(client.url, cookie) &&
+        client.secure === cookie.secure) {
+        client.setCookie(cookie);
+      }
+    }
+  } else {
+    // use the default domain
+    // FIXME: should a null domain cookie be added to all clients? should
+    // this be an option?
+    _client.setCookie(cookie);
+  }
+};
+
+/**
+ * Gets a cookie.
+ *
+ * @param name the name of the cookie.
+ * @param path an optional path for the cookie (if there are multiple cookies
+ *          with the same name but different paths).
+ * @param domain an optional domain for the cookie (if not using the default
+ *          domain).
+ *
+ * @return the cookie, cookies (if multiple matches), or null if not found.
+ */
+xhrApi.getCookie = function(name, path, domain) {
+  var rval = null;
+
+  if(domain) {
+    // get the cookies from the applicable domains
+    for(var key in _clients) {
+      var client = _clients[key];
+      if(http.withinCookieDomain(client.url, domain)) {
+        var cookie = client.getCookie(name, path);
+        if(cookie !== null) {
+          if(rval === null) {
+            rval = cookie;
+          } else if(!forge.util.isArray(rval)) {
+            rval = [rval, cookie];
+          } else {
+            rval.push(cookie);
+          }
+        }
+      }
+    }
+  } else {
+    // get cookie from default domain
+    rval = _client.getCookie(name, path);
+  }
+
+  return rval;
+};
+
+/**
+ * Removes a cookie.
+ *
+ * @param name the name of the cookie.
+ * @param path an optional path for the cookie (if there are multiple cookies
+ *          with the same name but different paths).
+ * @param domain an optional domain for the cookie (if not using the default
+ *          domain).
+ *
+ * @return true if a cookie was removed, false if not.
+ */
+xhrApi.removeCookie = function(name, path, domain) {
+  var rval = false;
+
+  if(domain) {
+    // remove the cookies from the applicable domains
+    for(var key in _clients) {
+      var client = _clients[key];
+      if(http.withinCookieDomain(client.url, domain)) {
+        if(client.removeCookie(name, path)) {
+           rval = true;
+        }
+      }
+    }
+  } else {
+    // remove cookie from default domain
+    rval = _client.removeCookie(name, path);
+  }
+
+  return rval;
+};
+
+/**
+ * Creates a new XmlHttpRequest. By default the base URL, flash policy port,
+ * etc, will be used. However, an XHR can be created to point at another
+ * cross-domain URL.
+ *
+ * @param options:
+ *   logWarningOnError: If true and an HTTP error status code is received then
+ *     log a warning, otherwise log a verbose message.
+ *   verbose: If true be very verbose in the output including the response
+ *     event and response body, otherwise only include status, timing, and
+ *     data size.
+ *   logError: a multi-var log function for warnings that takes the log
+ *     category as the first var.
+ *   logWarning: a multi-var log function for warnings that takes the log
+ *     category as the first var.
+ *   logDebug: a multi-var log function for warnings that takes the log
+ *     category as the first var.
+ *   logVerbose: a multi-var log function for warnings that takes the log
+ *     category as the first var.
+ *   url: the default base URL to connect to if xhr URLs are relative,
+ *     eg: https://myserver.com, and note that the following options will be
+ *     ignored if the URL is absent or the same as the default base URL.
+ *   policyPort: the port that provides the server's flash policy, 0 to use
+ *     the flash default.
+ *   policyUrl: the policy file URL to use instead of a policy port.
+ *   connections: the maximum number of concurrent connections.
+ *   caCerts: a list of PEM-formatted certificates to trust.
+ *   cipherSuites: an optional array of cipher suites to use, see
+ *     forge.tls.CipherSuites.
+ *   verify: optional TLS certificate verify callback to use (see forge.tls
+ *     for details).
+ *   getCertificate: an optional callback used to get a client-side
+ *     certificate.
+ *   getPrivateKey: an optional callback used to get a client-side private key.
+ *   getSignature: an optional callback used to get a client-side signature.
+ *   persistCookies: true to use persistent cookies via flash local storage,
+ *     false to only keep cookies in javascript.
+ *   primeTlsSockets: true to immediately connect TLS sockets on their
+ *     creation so that they will cache TLS sessions for reuse.
+ *
+ * @return the XmlHttpRequest.
+ */
+xhrApi.create = function(options) {
+  // set option defaults
+  options = $.extend({
+    logWarningOnError: true,
+    verbose: false,
+    logError: function() {},
+    logWarning: function() {},
+    logDebug: function() {},
+    logVerbose: function() {},
+    url: null
+  }, options || {});
+
+  // private xhr state
+  var _state = {
+    // the http client to use
+    client: null,
+    // request storage
+    request: null,
+    // response storage
+    response: null,
+    // asynchronous, true if doing asynchronous communication
+    asynchronous: true,
+    // sendFlag, true if send has been called
+    sendFlag: false,
+    // errorFlag, true if a network error occurred
+    errorFlag: false
+  };
+
+  // private log functions
+  var _log = {
+    error: options.logError || forge.log.error,
+    warning: options.logWarning || forge.log.warning,
+    debug: options.logDebug || forge.log.debug,
+    verbose: options.logVerbose || forge.log.verbose
+  };
+
+  // create public xhr interface
+  var xhr = {
+    // an EventListener
+    onreadystatechange: null,
+    // readonly, the current readyState
+    readyState: UNSENT,
+    // a string with the response entity-body
+    responseText: '',
+    // a Document for response entity-bodies that are XML
+    responseXML: null,
+    // readonly, returns the HTTP status code (i.e. 404)
+    status: 0,
+    // readonly, returns the HTTP status message (i.e. 'Not Found')
+    statusText: ''
+  };
+
+  // determine which http client to use
+  if(options.url === null) {
+    // use default
+    _state.client = _client;
+  } else {
+    var url;
+    try {
+      url = new URL(options.url);
+    } catch(e) {
+      var error = new Error('Invalid url.');
+      error.details = {
+        url: options.url
+      };
+    }
+
+    // find client
+    if(url.origin in _clients) {
+      // client found
+      _state.client = _clients[url.origin];
+    } else {
+      // create client
+      _state.client = http.createClient({
+        url: options.url,
+        socketPool: _sp,
+        policyPort: options.policyPort || _policyPort,
+        policyUrl: options.policyUrl || _policyUrl,
+        connections: options.connections || _maxConnections,
+        caCerts: options.caCerts,
+        cipherSuites: options.cipherSuites,
+        persistCookies: options.persistCookies || true,
+        primeTlsSockets: options.primeTlsSockets || false,
+        verify: options.verify,
+        getCertificate: options.getCertificate,
+        getPrivateKey: options.getPrivateKey,
+        getSignature: options.getSignature
+      });
+      _clients[url.origin] = _state.client;
+    }
+  }
+
+  /**
+   * Opens the request. This method will create the HTTP request to send.
+   *
+   * @param method the HTTP method (i.e. 'GET').
+   * @param url the relative url (the HTTP request path).
+   * @param async always true, ignored.
+   * @param user always null, ignored.
+   * @param password always null, ignored.
+   */
+  xhr.open = function(method, url, async, user, password) {
+    // 1. validate Document if one is associated
+    // TODO: not implemented (not used yet)
+
+    // 2. validate method token
+    // 3. change method to uppercase if it matches a known
+    // method (here we just require it to be uppercase, and
+    // we do not allow the standard methods)
+    // 4. disallow CONNECT, TRACE, or TRACK with a security error
+    switch(method) {
+    case 'DELETE':
+    case 'GET':
+    case 'HEAD':
+    case 'OPTIONS':
+    case 'PATCH':
+    case 'POST':
+    case 'PUT':
+      // valid method
+      break;
+    case 'CONNECT':
+    case 'TRACE':
+    case 'TRACK':
+      throw new Error('CONNECT, TRACE and TRACK methods are disallowed');
+    default:
+      throw new Error('Invalid method: ' + method);
+    }
+
+    // TODO: other validation steps in algorithm are not implemented
+
+    // 19. set send flag to false
+    // set response body to null
+    // empty list of request headers
+    // set request method to given method
+    // set request URL
+    // set username, password
+    // set asychronous flag
+    _state.sendFlag = false;
+    xhr.responseText = '';
+    xhr.responseXML = null;
+
+    // custom: reset status and statusText
+    xhr.status = 0;
+    xhr.statusText = '';
+
+    // create the HTTP request
+    _state.request = http.createRequest({
+      method: method,
+      path: url
+    });
+
+    // 20. set state to OPENED
+    xhr.readyState = OPENED;
+
+    // 21. dispatch onreadystatechange
+    if(xhr.onreadystatechange) {
+       xhr.onreadystatechange();
+    }
+  };
+
+  /**
+   * Adds an HTTP header field to the request.
+   *
+   * @param header the name of the header field.
+   * @param value the value of the header field.
+   */
+  xhr.setRequestHeader = function(header, value) {
+    // 1. if state is not OPENED or send flag is true, raise exception
+    if(xhr.readyState != OPENED || _state.sendFlag) {
+      throw new Error('XHR not open or sending');
+    }
+
+    // TODO: other validation steps in spec aren't implemented
+
+    // set header
+    _state.request.setField(header, value);
+  };
+
+  /**
+   * Sends the request and any associated data.
+   *
+   * @param data a string or Document object to send, null to send no data.
+   */
+  xhr.send = function(data) {
+    // 1. if state is not OPENED or 2. send flag is true, raise
+    // an invalid state exception
+    if(xhr.readyState != OPENED || _state.sendFlag) {
+      throw new Error('XHR not open or sending');
+    }
+
+    // 3. ignore data if method is GET or HEAD
+    if(data &&
+      _state.request.method !== 'GET' &&
+      _state.request.method !== 'HEAD') {
+      // handle non-IE case
+      if(typeof(XMLSerializer) !== 'undefined') {
+        if(data instanceof Document) {
+          var xs = new XMLSerializer();
+          _state.request.body = xs.serializeToString(data);
+        } else {
+          _state.request.body = data;
+        }
+      } else {
+        // poorly implemented IE case
+        if(typeof(data.xml) !== 'undefined') {
+          _state.request.body = data.xml;
+        } else {
+          _state.request.body = data;
+        }
+      }
+    }
+
+    // 4. release storage mutex (not used)
+
+    // 5. set error flag to false
+    _state.errorFlag = false;
+
+    // 6. if asynchronous is true (must be in this implementation)
+
+    // 6.1 set send flag to true
+    _state.sendFlag = true;
+
+    // 6.2 dispatch onreadystatechange
+    if(xhr.onreadystatechange) {
+      xhr.onreadystatechange();
+    }
+
+    // create send options
+    var options = {};
+    options.request = _state.request;
+    options.headerReady = function(e) {
+      // make cookies available for ease of use/iteration
+      xhr.cookies = _state.client.cookies;
+
+      // TODO: update document.cookie with any cookies where the
+      // script's domain matches
+
+      // headers received
+      xhr.readyState = HEADERS_RECEIVED;
+      xhr.status = e.response.code;
+      xhr.statusText = e.response.message;
+      _state.response = e.response;
+      if(xhr.onreadystatechange) {
+        xhr.onreadystatechange();
+      }
+      if(!_state.response.aborted) {
+        // now loading body
+        xhr.readyState = LOADING;
+        if(xhr.onreadystatechange) {
+           xhr.onreadystatechange();
+        }
+      }
+    };
+    options.bodyReady = function(e) {
+      xhr.readyState = DONE;
+      var ct = e.response.getField('Content-Type');
+      // Note: this null/undefined check is done outside because IE
+      // dies otherwise on a "'null' is null" error
+      if(ct) {
+        if(ct.indexOf('text/xml') === 0 ||
+          ct.indexOf('application/xml') === 0 ||
+          ct.indexOf('+xml') !== -1) {
+          try {
+            var doc = new ActiveXObject('MicrosoftXMLDOM');
+            doc.async = false;
+            doc.loadXML(e.response.body);
+            xhr.responseXML = doc;
+          } catch(ex) {
+            var parser = new DOMParser();
+            xhr.responseXML = parser.parseFromString(ex.body, 'text/xml');
+          }
+        }
+      }
+
+      var length = 0;
+      if(e.response.body !== null) {
+        xhr.responseText = e.response.body;
+        length = e.response.body.length;
+      }
+      // build logging output
+      var req = _state.request;
+      var output =
+        req.method + ' ' + req.path + ' ' +
+        xhr.status + ' ' + xhr.statusText + ' ' +
+        length + 'B ' +
+        (e.request.connectTime + e.request.time + e.response.time) +
+        'ms';
+      var lFunc;
+      if(options.verbose) {
+        lFunc = (xhr.status >= 400 && options.logWarningOnError) ?
+          _log.warning : _log.verbose;
+        lFunc(cat, output,
+          e, e.response.body ? '\n' + e.response.body : '\nNo content');
+      } else {
+        lFunc = (xhr.status >= 400 && options.logWarningOnError) ?
+          _log.warning : _log.debug;
+        lFunc(cat, output);
+      }
+      if(xhr.onreadystatechange) {
+        xhr.onreadystatechange();
+      }
+    };
+    options.error = function(e) {
+      var req = _state.request;
+      _log.error(cat, req.method + ' ' + req.path, e);
+
+      // 1. set response body to null
+      xhr.responseText = '';
+      xhr.responseXML = null;
+
+      // 2. set error flag to true (and reset status)
+      _state.errorFlag = true;
+      xhr.status = 0;
+      xhr.statusText = '';
+
+      // 3. set state to done
+      xhr.readyState = DONE;
+
+      // 4. asyc flag is always true, so dispatch onreadystatechange
+      if(xhr.onreadystatechange) {
+        xhr.onreadystatechange();
+      }
+    };
+
+    // 7. send request
+    _state.client.send(options);
+  };
+
+  /**
+   * Aborts the request.
+   */
+  xhr.abort = function() {
+    // 1. abort send
+    // 2. stop network activity
+    _state.request.abort();
+
+    // 3. set response to null
+    xhr.responseText = '';
+    xhr.responseXML = null;
+
+    // 4. set error flag to true (and reset status)
+    _state.errorFlag = true;
+    xhr.status = 0;
+    xhr.statusText = '';
+
+    // 5. clear user headers
+    _state.request = null;
+    _state.response = null;
+
+    // 6. if state is DONE or UNSENT, or if OPENED and send flag is false
+    if(xhr.readyState === DONE || xhr.readyState === UNSENT ||
+     (xhr.readyState === OPENED && !_state.sendFlag)) {
+      // 7. set ready state to unsent
+      xhr.readyState = UNSENT;
+    } else {
+      // 6.1 set state to DONE
+      xhr.readyState = DONE;
+
+      // 6.2 set send flag to false
+      _state.sendFlag = false;
+
+      // 6.3 dispatch onreadystatechange
+      if(xhr.onreadystatechange) {
+        xhr.onreadystatechange();
+      }
+
+      // 7. set state to UNSENT
+      xhr.readyState = UNSENT;
+    }
+  };
+
+  /**
+   * Gets all response headers as a string.
+   *
+   * @return the HTTP-encoded response header fields.
+   */
+  xhr.getAllResponseHeaders = function() {
+    var rval = '';
+    if(_state.response !== null) {
+      var fields = _state.response.fields;
+      $.each(fields, function(name, array) {
+        $.each(array, function(i, value) {
+          rval += name + ': ' + value + '\r\n';
+        });
+      });
+    }
+    return rval;
+  };
+
+  /**
+   * Gets a single header field value or, if there are multiple
+   * fields with the same name, a comma-separated list of header
+   * values.
+   *
+   * @return the header field value(s) or null.
+   */
+  xhr.getResponseHeader = function(header) {
+    var rval = null;
+    if(_state.response !== null) {
+      if(header in _state.response.fields) {
+        rval = _state.response.fields[header];
+        if(forge.util.isArray(rval)) {
+          rval = rval.join();
+        }
+      }
+    }
+    return rval;
+  };
+
+  return xhr;
+};
+
+})(jQuery);