Added several usage examples, fixed bugs, turned off restore by default

libs/annotator/lib/plugin/auth.js

@@ -0,0 +1,215 @@
+// Generated by CoffeeScript 1.6.3
+var base64Decode, base64UrlDecode, createDateFromISO8601, parseToken,
+  __hasProp = {}.hasOwnProperty,
+  __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
+
+createDateFromISO8601 = function(string) {
+  var d, date, offset, regexp, time, _ref;
+  regexp = "([0-9]{4})(-([0-9]{2})(-([0-9]{2})" + "(T([0-9]{2}):([0-9]{2})(:([0-9]{2})(\\.([0-9]+))?)?" + "(Z|(([-+])([0-9]{2}):([0-9]{2})))?)?)?)?";
+  d = string.match(new RegExp(regexp));
+  offset = 0;
+  date = new Date(d[1], 0, 1);
+  if (d[3]) {
+    date.setMonth(d[3] - 1);
+  }
+  if (d[5]) {
+    date.setDate(d[5]);
+  }
+  if (d[7]) {
+    date.setHours(d[7]);
+  }
+  if (d[8]) {
+    date.setMinutes(d[8]);
+  }
+  if (d[10]) {
+    date.setSeconds(d[10]);
+  }
+  if (d[12]) {
+    date.setMilliseconds(Number("0." + d[12]) * 1000);
+  }
+  if (d[14]) {
+    offset = (Number(d[16]) * 60) + Number(d[17]);
+    offset *= (_ref = d[15] === '-') != null ? _ref : {
+      1: -1
+    };
+  }
+  offset -= date.getTimezoneOffset();
+  time = Number(date) + (offset * 60 * 1000);
+  date.setTime(Number(time));
+  return date;
+};
+
+base64Decode = function(data) {
+  var ac, b64, bits, dec, h1, h2, h3, h4, i, o1, o2, o3, tmp_arr;
+  if (typeof atob !== "undefined" && atob !== null) {
+    return atob(data);
+  } else {
+    b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+    i = 0;
+    ac = 0;
+    dec = "";
+    tmp_arr = [];
+    if (!data) {
+      return data;
+    }
+    data += '';
+    while (i < data.length) {
+      h1 = b64.indexOf(data.charAt(i++));
+      h2 = b64.indexOf(data.charAt(i++));
+      h3 = b64.indexOf(data.charAt(i++));
+      h4 = b64.indexOf(data.charAt(i++));
+      bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
+      o1 = bits >> 16 & 0xff;
+      o2 = bits >> 8 & 0xff;
+      o3 = bits & 0xff;
+      if (h3 === 64) {
+        tmp_arr[ac++] = String.fromCharCode(o1);
+      } else if (h4 === 64) {
+        tmp_arr[ac++] = String.fromCharCode(o1, o2);
+      } else {
+        tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
+      }
+    }
+    return tmp_arr.join('');
+  }
+};
+
+base64UrlDecode = function(data) {
+  var i, m, _i, _ref;
+  m = data.length % 4;
+  if (m !== 0) {
+    for (i = _i = 0, _ref = 4 - m; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+      data += '=';
+    }
+  }
+  data = data.replace(/-/g, '+');
+  data = data.replace(/_/g, '/');
+  return base64Decode(data);
+};
+
+parseToken = function(token) {
+  var head, payload, sig, _ref;
+  _ref = token.split('.'), head = _ref[0], payload = _ref[1], sig = _ref[2];
+  return JSON.parse(base64UrlDecode(payload));
+};
+
+Annotator.Plugin.Auth = (function(_super) {
+  __extends(Auth, _super);
+
+  Auth.prototype.options = {
+    token: null,
+    tokenUrl: '/auth/token',
+    autoFetch: true
+  };
+
+  function Auth(element, options) {
+    Auth.__super__.constructor.apply(this, arguments);
+    this.waitingForToken = [];
+    if (this.options.token) {
+      this.setToken(this.options.token);
+    } else {
+      this.requestToken();
+    }
+  }
+
+  Auth.prototype.requestToken = function() {
+    var _this = this;
+    this.requestInProgress = true;
+    return $.ajax({
+      url: this.options.tokenUrl,
+      dataType: 'text',
+      xhrFields: {
+        withCredentials: true
+      }
+    }).done(function(data, status, xhr) {
+      return _this.setToken(data);
+    }).fail(function(xhr, status, err) {
+      var msg;
+      msg = Annotator._t("Couldn't get auth token:");
+      console.error("" + msg + " " + err, xhr);
+      return Annotator.showNotification("" + msg + " " + xhr.responseText, Annotator.Notification.ERROR);
+    }).always(function() {
+      return _this.requestInProgress = false;
+    });
+  };
+
+  Auth.prototype.setToken = function(token) {
+    var _results,
+      _this = this;
+    this.token = token;
+    this._unsafeToken = parseToken(token);
+    if (this.haveValidToken()) {
+      if (this.options.autoFetch) {
+        this.refreshTimeout = setTimeout((function() {
+          return _this.requestToken();
+        }), (this.timeToExpiry() - 2) * 1000);
+      }
+      this.updateHeaders();
+      _results = [];
+      while (this.waitingForToken.length > 0) {
+        _results.push(this.waitingForToken.pop()(this._unsafeToken));
+      }
+      return _results;
+    } else {
+      console.warn(Annotator._t("Didn't get a valid token."));
+      if (this.options.autoFetch) {
+        console.warn(Annotator._t("Getting a new token in 10s."));
+        return setTimeout((function() {
+          return _this.requestToken();
+        }), 10 * 1000);
+      }
+    }
+  };
+
+  Auth.prototype.haveValidToken = function() {
+    var allFields;
+    allFields = this._unsafeToken && this._unsafeToken.issuedAt && this._unsafeToken.ttl && this._unsafeToken.consumerKey;
+    if (allFields && this.timeToExpiry() > 0) {
+      return true;
+    } else {
+      return false;
+    }
+  };
+
+  Auth.prototype.timeToExpiry = function() {
+    var expiry, issue, now, timeToExpiry;
+    now = new Date().getTime() / 1000;
+    issue = createDateFromISO8601(this._unsafeToken.issuedAt).getTime() / 1000;
+    expiry = issue + this._unsafeToken.ttl;
+    timeToExpiry = expiry - now;
+    if (timeToExpiry > 0) {
+      return timeToExpiry;
+    } else {
+      return 0;
+    }
+  };
+
+  Auth.prototype.updateHeaders = function() {
+    var current;
+    current = this.element.data('annotator:headers');
+    return this.element.data('annotator:headers', $.extend(current, {
+      'x-annotator-auth-token': this.token
+    }));
+  };
+
+  Auth.prototype.withToken = function(callback) {
+    if (callback == null) {
+      return;
+    }
+    if (this.haveValidToken()) {
+      return callback(this._unsafeToken);
+    } else {
+      this.waitingForToken.push(callback);
+      if (!this.requestInProgress) {
+        return this.requestToken();
+      }
+    }
+  };
+
+  return Auth;
+
+})(Annotator.Plugin);
+
+/*
+//@ sourceMappingURL=auth.map
+*/