582 lines
20 KiB
JavaScript
582 lines
20 KiB
JavaScript
var crypto= require('crypto'),
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sha1= require('./sha1'),
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http= require('http'),
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https= require('https'),
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URL= require('url'),
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querystring= require('querystring'),
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OAuthUtils= require('./_utils');
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exports.OAuth= function(requestUrl, accessUrl, consumerKey, consumerSecret, version, authorize_callback, signatureMethod, nonceSize, customHeaders) {
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this._isEcho = false;
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this._requestUrl= requestUrl;
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this._accessUrl= accessUrl;
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this._consumerKey= consumerKey;
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this._consumerSecret= this._encodeData( consumerSecret );
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if (signatureMethod == "RSA-SHA1") {
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this._privateKey = consumerSecret;
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}
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this._version= version;
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if( authorize_callback === undefined ) {
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this._authorize_callback= "oob";
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}
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else {
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this._authorize_callback= authorize_callback;
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}
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if( signatureMethod != "PLAINTEXT" && signatureMethod != "HMAC-SHA1" && signatureMethod != "RSA-SHA1")
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throw new Error("Un-supported signature method: " + signatureMethod )
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this._signatureMethod= signatureMethod;
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this._nonceSize= nonceSize || 32;
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this._headers= customHeaders || {"Accept" : "*/*",
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"Connection" : "close",
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"User-Agent" : "Node authentication"}
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this._clientOptions= this._defaultClientOptions= {"requestTokenHttpMethod": "POST",
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"accessTokenHttpMethod": "POST",
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"followRedirects": true};
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this._oauthParameterSeperator = ",";
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};
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exports.OAuthEcho= function(realm, verify_credentials, consumerKey, consumerSecret, version, signatureMethod, nonceSize, customHeaders) {
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this._isEcho = true;
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this._realm= realm;
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this._verifyCredentials = verify_credentials;
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this._consumerKey= consumerKey;
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this._consumerSecret= this._encodeData( consumerSecret );
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if (signatureMethod == "RSA-SHA1") {
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this._privateKey = consumerSecret;
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}
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this._version= version;
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if( signatureMethod != "PLAINTEXT" && signatureMethod != "HMAC-SHA1" && signatureMethod != "RSA-SHA1")
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throw new Error("Un-supported signature method: " + signatureMethod );
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this._signatureMethod= signatureMethod;
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this._nonceSize= nonceSize || 32;
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this._headers= customHeaders || {"Accept" : "*/*",
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"Connection" : "close",
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"User-Agent" : "Node authentication"};
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this._oauthParameterSeperator = ",";
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}
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exports.OAuthEcho.prototype = exports.OAuth.prototype;
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exports.OAuth.prototype._getTimestamp= function() {
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return Math.floor( (new Date()).getTime() / 1000 );
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}
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exports.OAuth.prototype._encodeData= function(toEncode){
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if( toEncode == null || toEncode == "" ) return ""
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else {
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var result= encodeURIComponent(toEncode);
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// Fix the mismatch between OAuth's RFC3986's and Javascript's beliefs in what is right and wrong ;)
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return result.replace(/\!/g, "%21")
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.replace(/\'/g, "%27")
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.replace(/\(/g, "%28")
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.replace(/\)/g, "%29")
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.replace(/\*/g, "%2A");
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}
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}
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exports.OAuth.prototype._decodeData= function(toDecode) {
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if( toDecode != null ) {
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toDecode = toDecode.replace(/\+/g, " ");
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}
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return decodeURIComponent( toDecode);
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}
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exports.OAuth.prototype._getSignature= function(method, url, parameters, tokenSecret) {
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var signatureBase= this._createSignatureBase(method, url, parameters);
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return this._createSignature( signatureBase, tokenSecret );
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}
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exports.OAuth.prototype._normalizeUrl= function(url) {
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var parsedUrl= URL.parse(url, true)
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var port ="";
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if( parsedUrl.port ) {
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if( (parsedUrl.protocol == "http:" && parsedUrl.port != "80" ) ||
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(parsedUrl.protocol == "https:" && parsedUrl.port != "443") ) {
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port= ":" + parsedUrl.port;
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}
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}
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if( !parsedUrl.pathname || parsedUrl.pathname == "" ) parsedUrl.pathname ="/";
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return parsedUrl.protocol + "//" + parsedUrl.hostname + port + parsedUrl.pathname;
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}
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// Is the parameter considered an OAuth parameter
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exports.OAuth.prototype._isParameterNameAnOAuthParameter= function(parameter) {
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var m = parameter.match('^oauth_');
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if( m && ( m[0] === "oauth_" ) ) {
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return true;
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}
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else {
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return false;
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}
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};
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// build the OAuth request authorization header
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exports.OAuth.prototype._buildAuthorizationHeaders= function(orderedParameters) {
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var authHeader="OAuth ";
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if( this._isEcho ) {
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authHeader += 'realm="' + this._realm + '",';
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}
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for( var i= 0 ; i < orderedParameters.length; i++) {
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// Whilst the all the parameters should be included within the signature, only the oauth_ arguments
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// should appear within the authorization header.
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if( this._isParameterNameAnOAuthParameter(orderedParameters[i][0]) ) {
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authHeader+= "" + this._encodeData(orderedParameters[i][0])+"=\""+ this._encodeData(orderedParameters[i][1])+"\""+ this._oauthParameterSeperator;
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}
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}
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authHeader= authHeader.substring(0, authHeader.length-this._oauthParameterSeperator.length);
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return authHeader;
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}
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// Takes an object literal that represents the arguments, and returns an array
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// of argument/value pairs.
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exports.OAuth.prototype._makeArrayOfArgumentsHash= function(argumentsHash) {
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var argument_pairs= [];
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for(var key in argumentsHash ) {
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if (argumentsHash.hasOwnProperty(key)) {
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var value= argumentsHash[key];
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if( Array.isArray(value) ) {
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for(var i=0;i<value.length;i++) {
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argument_pairs[argument_pairs.length]= [key, value[i]];
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}
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}
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else {
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argument_pairs[argument_pairs.length]= [key, value];
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}
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}
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}
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return argument_pairs;
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}
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// Sorts the encoded key value pairs by encoded name, then encoded value
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exports.OAuth.prototype._sortRequestParams= function(argument_pairs) {
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// Sort by name, then value.
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argument_pairs.sort(function(a,b) {
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if ( a[0]== b[0] ) {
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return a[1] < b[1] ? -1 : 1;
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}
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else return a[0] < b[0] ? -1 : 1;
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});
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return argument_pairs;
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}
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exports.OAuth.prototype._normaliseRequestParams= function(args) {
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var argument_pairs= this._makeArrayOfArgumentsHash(args);
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// First encode them #3.4.1.3.2 .1
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for(var i=0;i<argument_pairs.length;i++) {
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argument_pairs[i][0]= this._encodeData( argument_pairs[i][0] );
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argument_pairs[i][1]= this._encodeData( argument_pairs[i][1] );
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}
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// Then sort them #3.4.1.3.2 .2
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argument_pairs= this._sortRequestParams( argument_pairs );
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// Then concatenate together #3.4.1.3.2 .3 & .4
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var args= "";
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for(var i=0;i<argument_pairs.length;i++) {
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args+= argument_pairs[i][0];
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args+= "="
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args+= argument_pairs[i][1];
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if( i < argument_pairs.length-1 ) args+= "&";
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}
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return args;
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}
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exports.OAuth.prototype._createSignatureBase= function(method, url, parameters) {
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url= this._encodeData( this._normalizeUrl(url) );
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parameters= this._encodeData( parameters );
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return method.toUpperCase() + "&" + url + "&" + parameters;
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}
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exports.OAuth.prototype._createSignature= function(signatureBase, tokenSecret) {
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if( tokenSecret === undefined ) var tokenSecret= "";
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else tokenSecret= this._encodeData( tokenSecret );
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// consumerSecret is already encoded
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var key= this._consumerSecret + "&" + tokenSecret;
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var hash= ""
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if( this._signatureMethod == "PLAINTEXT" ) {
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hash= key;
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}
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else if (this._signatureMethod == "RSA-SHA1") {
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key = this._privateKey || "";
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hash= crypto.createSign("RSA-SHA1").update(signatureBase).sign(key, 'base64');
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}
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else {
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if( crypto.Hmac ) {
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hash = crypto.createHmac("sha1", key).update(signatureBase).digest("base64");
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}
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else {
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hash= sha1.HMACSHA1(key, signatureBase);
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}
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}
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return hash;
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}
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exports.OAuth.prototype.NONCE_CHARS= ['a','b','c','d','e','f','g','h','i','j','k','l','m','n',
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'o','p','q','r','s','t','u','v','w','x','y','z','A','B',
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'C','D','E','F','G','H','I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3',
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'4','5','6','7','8','9'];
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exports.OAuth.prototype._getNonce= function(nonceSize) {
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var result = [];
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var chars= this.NONCE_CHARS;
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var char_pos;
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var nonce_chars_length= chars.length;
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for (var i = 0; i < nonceSize; i++) {
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char_pos= Math.floor(Math.random() * nonce_chars_length);
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result[i]= chars[char_pos];
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}
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return result.join('');
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}
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exports.OAuth.prototype._createClient= function( port, hostname, method, path, headers, sslEnabled ) {
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var options = {
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host: hostname,
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port: port,
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path: path,
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method: method,
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headers: headers
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};
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var httpModel;
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if( sslEnabled ) {
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httpModel= https;
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} else {
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httpModel= http;
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}
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return httpModel.request(options);
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}
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exports.OAuth.prototype._prepareParameters= function( oauth_token, oauth_token_secret, method, url, extra_params ) {
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var oauthParameters= {
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"oauth_timestamp": this._getTimestamp(),
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"oauth_nonce": this._getNonce(this._nonceSize),
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"oauth_version": this._version,
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"oauth_signature_method": this._signatureMethod,
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"oauth_consumer_key": this._consumerKey
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};
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if( oauth_token ) {
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oauthParameters["oauth_token"]= oauth_token;
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}
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var sig;
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if( this._isEcho ) {
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sig = this._getSignature( "GET", this._verifyCredentials, this._normaliseRequestParams(oauthParameters), oauth_token_secret);
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}
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else {
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if( extra_params ) {
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for( var key in extra_params ) {
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if (extra_params.hasOwnProperty(key)) oauthParameters[key]= extra_params[key];
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}
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}
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var parsedUrl= URL.parse( url, false );
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if( parsedUrl.query ) {
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var key2;
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var extraParameters= querystring.parse(parsedUrl.query);
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for(var key in extraParameters ) {
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var value= extraParameters[key];
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if( typeof value == "object" ){
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// TODO: This probably should be recursive
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for(key2 in value){
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oauthParameters[key + "[" + key2 + "]"] = value[key2];
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}
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} else {
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oauthParameters[key]= value;
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}
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}
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}
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sig = this._getSignature( method, url, this._normaliseRequestParams(oauthParameters), oauth_token_secret);
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}
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var orderedParameters= this._sortRequestParams( this._makeArrayOfArgumentsHash(oauthParameters) );
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orderedParameters[orderedParameters.length]= ["oauth_signature", sig];
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return orderedParameters;
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}
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exports.OAuth.prototype._performSecureRequest= function( oauth_token, oauth_token_secret, method, url, extra_params, post_body, post_content_type, callback ) {
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var orderedParameters= this._prepareParameters(oauth_token, oauth_token_secret, method, url, extra_params);
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if( !post_content_type ) {
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post_content_type= "application/x-www-form-urlencoded";
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}
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var parsedUrl= URL.parse( url, false );
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if( parsedUrl.protocol == "http:" && !parsedUrl.port ) parsedUrl.port= 80;
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if( parsedUrl.protocol == "https:" && !parsedUrl.port ) parsedUrl.port= 443;
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var headers= {};
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var authorization = this._buildAuthorizationHeaders(orderedParameters);
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if ( this._isEcho ) {
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headers["X-Verify-Credentials-Authorization"]= authorization;
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}
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else {
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headers["Authorization"]= authorization;
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}
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headers["Host"] = parsedUrl.host
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for( var key in this._headers ) {
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if (this._headers.hasOwnProperty(key)) {
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headers[key]= this._headers[key];
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}
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}
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// Filter out any passed extra_params that are really to do with OAuth
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for(var key in extra_params) {
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if( this._isParameterNameAnOAuthParameter( key ) ) {
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delete extra_params[key];
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}
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}
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if( (method == "POST" || method == "PUT") && ( post_body == null && extra_params != null) ) {
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// Fix the mismatch between the output of querystring.stringify() and this._encodeData()
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post_body= querystring.stringify(extra_params)
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.replace(/\!/g, "%21")
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.replace(/\'/g, "%27")
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.replace(/\(/g, "%28")
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.replace(/\)/g, "%29")
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.replace(/\*/g, "%2A");
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}
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if( post_body ) {
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if ( Buffer.isBuffer(post_body) ) {
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headers["Content-length"]= post_body.length;
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} else {
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headers["Content-length"]= Buffer.byteLength(post_body);
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}
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} else {
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headers["Content-length"]= 0;
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}
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headers["Content-Type"]= post_content_type;
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var path;
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if( !parsedUrl.pathname || parsedUrl.pathname == "" ) parsedUrl.pathname ="/";
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if( parsedUrl.query ) path= parsedUrl.pathname + "?"+ parsedUrl.query ;
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else path= parsedUrl.pathname;
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var request;
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if( parsedUrl.protocol == "https:" ) {
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request= this._createClient(parsedUrl.port, parsedUrl.hostname, method, path, headers, true);
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}
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else {
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request= this._createClient(parsedUrl.port, parsedUrl.hostname, method, path, headers);
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}
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var clientOptions = this._clientOptions;
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if( callback ) {
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var data="";
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var self= this;
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// Some hosts *cough* google appear to close the connection early / send no content-length header
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// allow this behaviour.
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var allowEarlyClose= OAuthUtils.isAnEarlyCloseHost( parsedUrl.hostname );
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var callbackCalled= false;
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var passBackControl = function( response ) {
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if(!callbackCalled) {
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callbackCalled= true;
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if ( response.statusCode >= 200 && response.statusCode <= 299 ) {
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callback(null, data, response);
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} else {
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// Follow 301 or 302 redirects with Location HTTP header
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if((response.statusCode == 301 || response.statusCode == 302) && clientOptions.followRedirects && response.headers && response.headers.location) {
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self._performSecureRequest( oauth_token, oauth_token_secret, method, response.headers.location, extra_params, post_body, post_content_type, callback);
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}
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else {
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callback({ statusCode: response.statusCode, data: data }, data, response);
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}
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}
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}
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}
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request.on('response', function (response) {
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response.setEncoding('utf8');
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response.on('data', function (chunk) {
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data+=chunk;
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});
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response.on('end', function () {
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passBackControl( response );
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});
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response.on('close', function () {
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if( allowEarlyClose ) {
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passBackControl( response );
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}
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});
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});
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request.on("error", function(err) {
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if(!callbackCalled) {
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callbackCalled= true;
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callback( err )
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}
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});
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if( (method == "POST" || method =="PUT") && post_body != null && post_body != "" ) {
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request.write(post_body);
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}
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request.end();
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}
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else {
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if( (method == "POST" || method =="PUT") && post_body != null && post_body != "" ) {
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request.write(post_body);
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}
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return request;
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}
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return;
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}
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exports.OAuth.prototype.setClientOptions= function(options) {
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var key,
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mergedOptions= {},
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hasOwnProperty= Object.prototype.hasOwnProperty;
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for( key in this._defaultClientOptions ) {
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if( !hasOwnProperty.call(options, key) ) {
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mergedOptions[key]= this._defaultClientOptions[key];
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} else {
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mergedOptions[key]= options[key];
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}
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}
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this._clientOptions= mergedOptions;
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};
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exports.OAuth.prototype.getOAuthAccessToken= function(oauth_token, oauth_token_secret, oauth_verifier, callback) {
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var extraParams= {};
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if( typeof oauth_verifier == "function" ) {
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callback= oauth_verifier;
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} else {
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extraParams.oauth_verifier= oauth_verifier;
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}
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this._performSecureRequest( oauth_token, oauth_token_secret, this._clientOptions.accessTokenHttpMethod, this._accessUrl, extraParams, null, null, function(error, data, response) {
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if( error ) callback(error);
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else {
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var results= querystring.parse( data );
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var oauth_access_token= results["oauth_token"];
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delete results["oauth_token"];
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var oauth_access_token_secret= results["oauth_token_secret"];
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delete results["oauth_token_secret"];
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callback(null, oauth_access_token, oauth_access_token_secret, results );
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}
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})
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}
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// Deprecated
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exports.OAuth.prototype.getProtectedResource= function(url, method, oauth_token, oauth_token_secret, callback) {
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this._performSecureRequest( oauth_token, oauth_token_secret, method, url, null, "", null, callback );
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}
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exports.OAuth.prototype.delete= function(url, oauth_token, oauth_token_secret, callback) {
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return this._performSecureRequest( oauth_token, oauth_token_secret, "DELETE", url, null, "", null, callback );
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}
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exports.OAuth.prototype.get= function(url, oauth_token, oauth_token_secret, callback) {
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return this._performSecureRequest( oauth_token, oauth_token_secret, "GET", url, null, "", null, callback );
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}
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exports.OAuth.prototype._putOrPost= function(method, url, oauth_token, oauth_token_secret, post_body, post_content_type, callback) {
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var extra_params= null;
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if( typeof post_content_type == "function" ) {
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callback= post_content_type;
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|
post_content_type= null;
|
|
}
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|
if ( typeof post_body != "string" && !Buffer.isBuffer(post_body) ) {
|
|
post_content_type= "application/x-www-form-urlencoded"
|
|
extra_params= post_body;
|
|
post_body= null;
|
|
}
|
|
return this._performSecureRequest( oauth_token, oauth_token_secret, method, url, extra_params, post_body, post_content_type, callback );
|
|
}
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|
|
|
|
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exports.OAuth.prototype.put= function(url, oauth_token, oauth_token_secret, post_body, post_content_type, callback) {
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return this._putOrPost("PUT", url, oauth_token, oauth_token_secret, post_body, post_content_type, callback);
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|
}
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|
|
|
exports.OAuth.prototype.post= function(url, oauth_token, oauth_token_secret, post_body, post_content_type, callback) {
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return this._putOrPost("POST", url, oauth_token, oauth_token_secret, post_body, post_content_type, callback);
|
|
}
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|
|
|
/**
|
|
* Gets a request token from the OAuth provider and passes that information back
|
|
* to the calling code.
|
|
*
|
|
* The callback should expect a function of the following form:
|
|
*
|
|
* function(err, token, token_secret, parsedQueryString) {}
|
|
*
|
|
* This method has optional parameters so can be called in the following 2 ways:
|
|
*
|
|
* 1) Primary use case: Does a basic request with no extra parameters
|
|
* getOAuthRequestToken( callbackFunction )
|
|
*
|
|
* 2) As above but allows for provision of extra parameters to be sent as part of the query to the server.
|
|
* getOAuthRequestToken( extraParams, callbackFunction )
|
|
*
|
|
* N.B. This method will HTTP POST verbs by default, if you wish to override this behaviour you will
|
|
* need to provide a requestTokenHttpMethod option when creating the client.
|
|
*
|
|
**/
|
|
exports.OAuth.prototype.getOAuthRequestToken= function( extraParams, callback ) {
|
|
if( typeof extraParams == "function" ){
|
|
callback = extraParams;
|
|
extraParams = {};
|
|
}
|
|
// Callbacks are 1.0A related
|
|
if( this._authorize_callback ) {
|
|
extraParams["oauth_callback"]= this._authorize_callback;
|
|
}
|
|
this._performSecureRequest( null, null, this._clientOptions.requestTokenHttpMethod, this._requestUrl, extraParams, null, null, function(error, data, response) {
|
|
if( error ) callback(error);
|
|
else {
|
|
var results= querystring.parse(data);
|
|
|
|
var oauth_token= results["oauth_token"];
|
|
var oauth_token_secret= results["oauth_token_secret"];
|
|
delete results["oauth_token"];
|
|
delete results["oauth_token_secret"];
|
|
callback(null, oauth_token, oauth_token_secret, results );
|
|
}
|
|
});
|
|
}
|
|
|
|
exports.OAuth.prototype.signUrl= function(url, oauth_token, oauth_token_secret, method) {
|
|
|
|
if( method === undefined ) {
|
|
var method= "GET";
|
|
}
|
|
|
|
var orderedParameters= this._prepareParameters(oauth_token, oauth_token_secret, method, url, {});
|
|
var parsedUrl= URL.parse( url, false );
|
|
|
|
var query="";
|
|
for( var i= 0 ; i < orderedParameters.length; i++) {
|
|
query+= orderedParameters[i][0]+"="+ this._encodeData(orderedParameters[i][1]) + "&";
|
|
}
|
|
query= query.substring(0, query.length-1);
|
|
|
|
return parsedUrl.protocol + "//"+ parsedUrl.host + parsedUrl.pathname + "?" + query;
|
|
};
|
|
|
|
exports.OAuth.prototype.authHeader= function(url, oauth_token, oauth_token_secret, method) {
|
|
if( method === undefined ) {
|
|
var method= "GET";
|
|
}
|
|
|
|
var orderedParameters= this._prepareParameters(oauth_token, oauth_token_secret, method, url, {});
|
|
return this._buildAuthorizationHeaders(orderedParameters);
|
|
};
|