Mercurial > hg > OKFNAnnotator

annotate annotator_files/lib/plugin/auth.js @ 3:6356e78ccf5c

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new version contains Annotator JS files to be used with FilesystemSite.
author casties
date Thu, 05 Apr 2012 19:37:27 +0200
parents
children 6979313586cf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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3
6356e78ccf5c new version contains Annotator JS files to be used with FilesystemSite.
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1 var base64Decode, base64UrlDecode, createDateFromISO8601, parseToken,
6356e78ccf5c new version contains Annotator JS files to be used with FilesystemSite.
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2 __hasProp = Object.prototype.hasOwnProperty,
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3 __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; };
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4
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5 createDateFromISO8601 = function(string) {
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6 var d, date, offset, regexp, time, _ref;
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7 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})))?)?)?)?";
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8 d = string.match(new RegExp(regexp));
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9 offset = 0;
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10 date = new Date(d[1], 0, 1);
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11 if (d[3]) date.setMonth(d[3] - 1);
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12 if (d[5]) date.setDate(d[5]);
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13 if (d[7]) date.setHours(d[7]);
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14 if (d[8]) date.setMinutes(d[8]);
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15 if (d[10]) date.setSeconds(d[10]);
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16 if (d[12]) date.setMilliseconds(Number("0." + d[12]) * 1000);
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17 if (d[14]) {
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18 offset = (Number(d[16]) * 60) + Number(d[17]);
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19 offset *= (_ref = d[15] === '-') != null ? _ref : {
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20 1: -1
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21 };
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22 }
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23 offset -= date.getTimezoneOffset();
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24 time = Number(date) + (offset * 60 * 1000);
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25 date.setTime(Number(time));
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26 return date;
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27 };
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28
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29 base64Decode = function(data) {
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30 var ac, b64, bits, dec, h1, h2, h3, h4, i, o1, o2, o3, tmp_arr;
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31 if (typeof atob !== "undefined" && atob !== null) {
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32 return atob(data);
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33 } else {
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34 b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
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35 i = 0;
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36 ac = 0;
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37 dec = "";
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38 tmp_arr = [];
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39 if (!data) return data;
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40 data += '';
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41 while (i < data.length) {
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42 h1 = b64.indexOf(data.charAt(i++));
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43 h2 = b64.indexOf(data.charAt(i++));
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44 h3 = b64.indexOf(data.charAt(i++));
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45 h4 = b64.indexOf(data.charAt(i++));
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46 bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
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47 o1 = bits >> 16 & 0xff;
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48 o2 = bits >> 8 & 0xff;
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49 o3 = bits & 0xff;
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50 if (h3 === 64) {
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51 tmp_arr[ac++] = String.fromCharCode(o1);
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52 } else if (h4 === 64) {
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53 tmp_arr[ac++] = String.fromCharCode(o1, o2);
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54 } else {
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55 tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
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56 }
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57 }
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58 return tmp_arr.join('');
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59 }
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60 };
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61
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62 base64UrlDecode = function(data) {
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63 var i, m, _ref;
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64 m = data.length % 4;
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65 if (m !== 0) {
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66 for (i = 0, _ref = 4 - m; 0 <= _ref ? i < _ref : i > _ref; 0 <= _ref ? i++ : i--) {
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67 data += '=';
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68 }
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69 }
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70 data = data.replace(/-/g, '+');
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71 data = data.replace(/_/g, '/');
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72 return base64Decode(data);
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73 };
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74
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75 parseToken = function(token) {
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76 var head, payload, sig, _ref;
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77 _ref = token.split('.'), head = _ref[0], payload = _ref[1], sig = _ref[2];
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78 return JSON.parse(base64UrlDecode(payload));
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79 };
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80
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81 Annotator.Plugin.Auth = (function(_super) {
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82
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83 __extends(Auth, _super);
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84
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85 Auth.prototype.options = {
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86 token: null,
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87 tokenUrl: '/auth/token',
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88 autoFetch: true
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89 };
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90
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91 function Auth(element, options) {
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92 Auth.__super__.constructor.apply(this, arguments);
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93 this.waitingForToken = [];
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94 if (this.options.token) {
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95 this.setToken(this.options.token);
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96 } else {
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97 this.requestToken();
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98 }
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99 }
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100
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101 Auth.prototype.requestToken = function() {
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102 var _this = this;
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103 this.requestInProgress = true;
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104 return $.ajax({
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105 url: this.options.tokenUrl,
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106 dataType: 'text',
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107 xhrFields: {
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108 withCredentials: true
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109 }
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110 }).done(function(data, status, xhr) {
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111 return _this.setToken(data);
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112 }).fail(function(xhr, status, err) {
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113 var msg;
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114 msg = Annotator._t("Couldn't get auth token:");
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115 console.error("" + msg + " " + err, xhr);
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116 return Annotator.showNotification("" + msg + " " + xhr.responseText, Annotator.Notification.ERROR);
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117 }).always(function() {
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118 return _this.requestInProgress = false;
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119 });
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120 };
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121
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122 Auth.prototype.setToken = function(token) {
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123 var _results,
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124 _this = this;
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125 this.token = token;
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126 this._unsafeToken = parseToken(token);
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127 if (this.haveValidToken()) {
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128 if (this.options.autoFetch) {
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129 this.refreshTimeout = setTimeout((function() {
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130 return _this.requestToken();
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131 }), (this.timeToExpiry() - 2) * 1000);
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132 }
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133 this.updateHeaders();
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134 _results = [];
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135 while (this.waitingForToken.length > 0) {
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136 _results.push(this.waitingForToken.pop()(this._unsafeToken));
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137 }
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138 return _results;
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139 } else {
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140 console.warn(Annotator._t("Didn't get a valid token."));
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141 if (this.options.autoFetch) {
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142 console.warn(Annotator._t("Getting a new token in 10s."));
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143 return setTimeout((function() {
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144 return _this.requestToken();
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145 }), 10 * 1000);
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146 }
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147 }
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148 };
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149
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150 Auth.prototype.haveValidToken = function() {
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151 var allFields;
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152 allFields = this._unsafeToken && this._unsafeToken.issuedAt && this._unsafeToken.ttl && this._unsafeToken.consumerKey;
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153 return allFields && this.timeToExpiry() > 0;
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154 };
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155
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156 Auth.prototype.timeToExpiry = function() {
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157 var expiry, issue, now, timeToExpiry;
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158 now = new Date().getTime() / 1000;
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159 issue = createDateFromISO8601(this._unsafeToken.issuedAt).getTime() / 1000;
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160 expiry = issue + this._unsafeToken.ttl;
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161 timeToExpiry = expiry - now;
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162 if (timeToExpiry > 0) {
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163 return timeToExpiry;
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164 } else {
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165 return 0;
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166 }
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167 };
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168
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169 Auth.prototype.updateHeaders = function() {
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170 var current;
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171 current = this.element.data('annotator:headers');
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172 return this.element.data('annotator:headers', $.extend(current, {
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173 'x-annotator-auth-token': this.token
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174 }));
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175 };
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176
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177 Auth.prototype.withToken = function(callback) {
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178 if (!(callback != null)) return;
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179 if (this.haveValidToken()) {
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180 return callback(this._unsafeToken);
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181 } else {
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182 this.waitingForToken.push(callback);
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183 if (!this.requestInProgress) return this.requestToken();
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184 }
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185 };
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186
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187 return Auth;
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188
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189 })(Annotator.Plugin);