OAuth do Netsuite não está funcionando

Tentei implementar o exemplo OAuth do Netsuite, conforme ilustrado aqui:https://netsuite.custhelp.com/app/answers/detail/a_id/42165. Eu o publiquei diretamente abaixo para que você não precise ir para a página se não quiser.

Infelizmente, não está funcionando. Sei que tenho o token, a chave e o segredo corretos e o ID da conta. Ele está me dando um bom erro:

{"error" : {"code" : "INVALID_LOGIN_ATTEMPT", "message" : "Invalid login attempt."}}

Eu posso olhar nas minhas auditorias de login e ver que está dizendo que oassinatura é inválida. Mas o código em si parece bem e foi fornecido pela Netsuite.

Também tentei algumas abordagens no Node.JS e não consegui fazê-las funcionar. Alguma sugestão de qual direção devo seguir?

import oauth2 as oauth
import requests
import time

url = "https://rest.netsuite.com/app/site/hosting/restlet.nl?script=992&deploy=1"
token = oauth.Token(key="080eefeb395df81902e18305540a97b5b3524b251772adf769f06e6f0d9dfde5", secret="451f28d17127a3dd427898c6b75546d30b5bd8c8d7e73e23028c497221196ae2")
consumer = oauth.Consumer(key="504ee7703e1871f22180441563ad9f01f3f18d67ecda580b0fae764ed7c4fd38", secret="b36d202caf62f889fbd8c306e633a5a1105c3767ba8fc15f2c8246c5f11e500c")

http_method = "GET"  
realm="ACCT123456"

params = {
    'oauth_version': "1.0",
    'oauth_nonce': oauth.generate_nonce(),
    'oauth_timestamp': str(int(time.time())),
    'oauth_token': token.key,
    'oauth_consumer_key': consumer.key
}

req = oauth.Request(method=http_method, url=url, parameters=params)
signature_method = oauth.SignatureMethod_HMAC_SHA1()
req.sign_request(signature_method, consumer, token)
header = req.to_header(realm)
headery = header['Authorization'].encode('ascii', 'ignore')
headerx = {"Authorization": headery, "Content-Type":"application/json"}
print(headerx)
conn = requests.get("https://rest.netsuite.com/app/site/hosting/restlet.nl?script=992&deploy=1",headers=headerx)
print(conn.text)

Também implementei algumas amostras do Node.JS (que também não funcionaram). Aqui está um deles (CryptoJS HMAC-SHA1 e HMAC-SHA256 estão no topo, a biblioteca oauth-1.0a e o código fornecido pelo Netsuite com algumas pequenas alterações para fazê-lo funcionar (adicionada uma função hash, renomeada como 'public ' para chave'):

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
var CryptoJS=CryptoJS||function(g,l){var e={},d=e.lib={},m=function(){},k=d.Base={extend:function(a){m.prototype=this;var c=new m;a&&c.mixIn(a);c.hasOwnProperty("init")||(c.init=function(){c.$super.init.apply(this,arguments)});c.init.prototype=c;c.$super=this;return c},create:function(){var a=this.extend();a.init.apply(a,arguments);return a},init:function(){},mixIn:function(a){for(var c in a)a.hasOwnProperty(c)&&(this[c]=a[c]);a.hasOwnProperty("toString")&&(this.toString=a.toString)},clone:function(){return this.init.prototype.extend(this)}},
p=d.WordArray=k.extend({init:function(a,c){a=this.words=a||[];this.sigBytes=c!=l?c:4*a.length},toString:function(a){return(a||n).stringify(this)},concat:function(a){var c=this.words,q=a.words,f=this.sigBytes;a=a.sigBytes;this.clamp();if(f%4)for(var b=0;b<a;b++)c[f+b>>>2]|=(q[b>>>2]>>>24-8*(b%4)&255)<<24-8*((f+b)%4);else if(65535<q.length)for(b=0;b<a;b+=4)c[f+b>>>2]=q[b>>>2];else c.push.apply(c,q);this.sigBytes+=a;return this},clamp:function(){var a=this.words,c=this.sigBytes;a[c>>>2]&=4294967295<<
32-8*(c%4);a.length=g.ceil(c/4)},clone:function(){var a=k.clone.call(this);a.words=this.words.slice(0);return a},random:function(a){for(var c=[],b=0;b<a;b+=4)c.push(4294967296*g.random()|0);return new p.init(c,a)}}),b=e.enc={},n=b.Hex={stringify:function(a){var c=a.words;a=a.sigBytes;for(var b=[],f=0;f<a;f++){var d=c[f>>>2]>>>24-8*(f%4)&255;b.push((d>>>4).toString(16));b.push((d&15).toString(16))}return b.join("")},parse:function(a){for(var c=a.length,b=[],f=0;f<c;f+=2)b[f>>>3]|=parseInt(a.substr(f,
2),16)<<24-4*(f%8);return new p.init(b,c/2)}},j=b.Latin1={stringify:function(a){var c=a.words;a=a.sigBytes;for(var b=[],f=0;f<a;f++)b.push(String.fromCharCode(c[f>>>2]>>>24-8*(f%4)&255));return b.join("")},parse:function(a){for(var c=a.length,b=[],f=0;f<c;f++)b[f>>>2]|=(a.charCodeAt(f)&255)<<24-8*(f%4);return new p.init(b,c)}},h=b.Utf8={stringify:function(a){try{return decodeURIComponent(escape(j.stringify(a)))}catch(c){throw Error("Malformed UTF-8 data");}},parse:function(a){return j.parse(unescape(encodeURIComponent(a)))}},
r=d.BufferedBlockAlgorithm=k.extend({reset:function(){this._data=new p.init;this._nDataBytes=0},_append:function(a){"string"==typeof a&&(a=h.parse(a));this._data.concat(a);this._nDataBytes+=a.sigBytes},_process:function(a){var c=this._data,b=c.words,f=c.sigBytes,d=this.blockSize,e=f/(4*d),e=a?g.ceil(e):g.max((e|0)-this._minBufferSize,0);a=e*d;f=g.min(4*a,f);if(a){for(var k=0;k<a;k+=d)this._doProcessBlock(b,k);k=b.splice(0,a);c.sigBytes-=f}return new p.init(k,f)},clone:function(){var a=k.clone.call(this);
a._data=this._data.clone();return a},_minBufferSize:0});d.Hasher=r.extend({cfg:k.extend(),init:function(a){this.cfg=this.cfg.extend(a);this.reset()},reset:function(){r.reset.call(this);this._doReset()},update:function(a){this._append(a);this._process();return this},finalize:function(a){a&&this._append(a);return this._doFinalize()},blockSize:16,_createHelper:function(a){return function(b,d){return(new a.init(d)).finalize(b)}},_createHmacHelper:function(a){return function(b,d){return(new s.HMAC.init(a,
d)).finalize(b)}}});var s=e.algo={};return e}(Math);
(function(){var g=CryptoJS,l=g.lib,e=l.WordArray,d=l.Hasher,m=[],l=g.algo.SHA1=d.extend({_doReset:function(){this._hash=new e.init([1732584193,4023233417,2562383102,271733878,3285377520])},_doProcessBlock:function(d,e){for(var b=this._hash.words,n=b[0],j=b[1],h=b[2],g=b[3],l=b[4],a=0;80>a;a++){if(16>a)m[a]=d[e+a]|0;else{var c=m[a-3]^m[a-8]^m[a-14]^m[a-16];m[a]=c<<1|c>>>31}c=(n<<5|n>>>27)+l+m[a];c=20>a?c+((j&h|~j&g)+1518500249):40>a?c+((j^h^g)+1859775393):60>a?c+((j&h|j&g|h&g)-1894007588):c+((j^h^
g)-899497514);l=g;g=h;h=j<<30|j>>>2;j=n;n=c}b[0]=b[0]+n|0;b[1]=b[1]+j|0;b[2]=b[2]+h|0;b[3]=b[3]+g|0;b[4]=b[4]+l|0},_doFinalize:function(){var d=this._data,e=d.words,b=8*this._nDataBytes,g=8*d.sigBytes;e[g>>>5]|=128<<24-g%32;e[(g+64>>>9<<4)+14]=Math.floor(b/4294967296);e[(g+64>>>9<<4)+15]=b;d.sigBytes=4*e.length;this._process();return this._hash},clone:function(){var e=d.clone.call(this);e._hash=this._hash.clone();return e}});g.SHA1=d._createHelper(l);g.HmacSHA1=d._createHmacHelper(l)})();
(function(){var g=CryptoJS,l=g.enc.Utf8;g.algo.HMAC=g.lib.Base.extend({init:function(e,d){e=this._hasher=new e.init;"string"==typeof d&&(d=l.parse(d));var g=e.blockSize,k=4*g;d.sigBytes>k&&(d=e.finalize(d));d.clamp();for(var p=this._oKey=d.clone(),b=this._iKey=d.clone(),n=p.words,j=b.words,h=0;h<g;h++)n[h]^=1549556828,j[h]^=909522486;p.sigBytes=b.sigBytes=k;this.reset()},reset:function(){var e=this._hasher;e.reset();e.update(this._iKey)},update:function(e){this._hasher.update(e);return this},finalize:function(e){var d=
this._hasher;e=d.finalize(e);d.reset();return d.finalize(this._oKey.clone().concat(e))}})})();

/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
var CryptoJS=CryptoJS||function(h,s){var f={},g=f.lib={},q=function(){},m=g.Base={extend:function(a){q.prototype=this;var c=new q;a&&c.mixIn(a);c.hasOwnProperty("init")||(c.init=function(){c.$super.init.apply(this,arguments)});c.init.prototype=c;c.$super=this;return c},create:function(){var a=this.extend();a.init.apply(a,arguments);return a},init:function(){},mixIn:function(a){for(var c in a)a.hasOwnProperty(c)&&(this[c]=a[c]);a.hasOwnProperty("toString")&&(this.toString=a.toString)},clone:function(){return this.init.prototype.extend(this)}},
r=g.WordArray=m.extend({init:function(a,c){a=this.words=a||[];this.sigBytes=c!=s?c:4*a.length},toString:function(a){return(a||k).stringify(this)},concat:function(a){var c=this.words,d=a.words,b=this.sigBytes;a=a.sigBytes;this.clamp();if(b%4)for(var e=0;e<a;e++)c[b+e>>>2]|=(d[e>>>2]>>>24-8*(e%4)&255)<<24-8*((b+e)%4);else if(65535<d.length)for(e=0;e<a;e+=4)c[b+e>>>2]=d[e>>>2];else c.push.apply(c,d);this.sigBytes+=a;return this},clamp:function(){var a=this.words,c=this.sigBytes;a[c>>>2]&=4294967295<<
32-8*(c%4);a.length=h.ceil(c/4)},clone:function(){var a=m.clone.call(this);a.words=this.words.slice(0);return a},random:function(a){for(var c=[],d=0;d<a;d+=4)c.push(4294967296*h.random()|0);return new r.init(c,a)}}),l=f.enc={},k=l.Hex={stringify:function(a){var c=a.words;a=a.sigBytes;for(var d=[],b=0;b<a;b++){var e=c[b>>>2]>>>24-8*(b%4)&255;d.push((e>>>4).toString(16));d.push((e&15).toString(16))}return d.join("")},parse:function(a){for(var c=a.length,d=[],b=0;b<c;b+=2)d[b>>>3]|=parseInt(a.substr(b,
2),16)<<24-4*(b%8);return new r.init(d,c/2)}},n=l.Latin1={stringify:function(a){var c=a.words;a=a.sigBytes;for(var d=[],b=0;b<a;b++)d.push(String.fromCharCode(c[b>>>2]>>>24-8*(b%4)&255));return d.join("")},parse:function(a){for(var c=a.length,d=[],b=0;b<c;b++)d[b>>>2]|=(a.charCodeAt(b)&255)<<24-8*(b%4);return new r.init(d,c)}},j=l.Utf8={stringify:function(a){try{return decodeURIComponent(escape(n.stringify(a)))}catch(c){throw Error("Malformed UTF-8 data");}},parse:function(a){return n.parse(unescape(encodeURIComponent(a)))}},
u=g.BufferedBlockAlgorithm=m.extend({reset:function(){this._data=new r.init;this._nDataBytes=0},_append:function(a){"string"==typeof a&&(a=j.parse(a));this._data.concat(a);this._nDataBytes+=a.sigBytes},_process:function(a){var c=this._data,d=c.words,b=c.sigBytes,e=this.blockSize,f=b/(4*e),f=a?h.ceil(f):h.max((f|0)-this._minBufferSize,0);a=f*e;b=h.min(4*a,b);if(a){for(var g=0;g<a;g+=e)this._doProcessBlock(d,g);g=d.splice(0,a);c.sigBytes-=b}return new r.init(g,b)},clone:function(){var a=m.clone.call(this);
a._data=this._data.clone();return a},_minBufferSize:0});g.Hasher=u.extend({cfg:m.extend(),init:function(a){this.cfg=this.cfg.extend(a);this.reset()},reset:function(){u.reset.call(this);this._doReset()},update:function(a){this._append(a);this._process();return this},finalize:function(a){a&&this._append(a);return this._doFinalize()},blockSize:16,_createHelper:function(a){return function(c,d){return(new a.init(d)).finalize(c)}},_createHmacHelper:function(a){return function(c,d){return(new t.HMAC.init(a,
d)).finalize(c)}}});var t=f.algo={};return f}(Math);
(function(h){for(var s=CryptoJS,f=s.lib,g=f.WordArray,q=f.Hasher,f=s.algo,m=[],r=[],l=function(a){return 4294967296*(a-(a|0))|0},k=2,n=0;64>n;){var j;a:{j=k;for(var u=h.sqrt(j),t=2;t<=u;t++)if(!(j%t)){j=!1;break a}j=!0}j&&(8>n&&(m[n]=l(h.pow(k,0.5))),r[n]=l(h.pow(k,1/3)),n++);k++}var a=[],f=f.SHA256=q.extend({_doReset:function(){this._hash=new g.init(m.slice(0))},_doProcessBlock:function(c,d){for(var b=this._hash.words,e=b[0],f=b[1],g=b[2],j=b[3],h=b[4],m=b[5],n=b[6],q=b[7],p=0;64>p;p++){if(16>p)a[p]=
c[d+p]|0;else{var k=a[p-15],l=a[p-2];a[p]=((k<<25|k>>>7)^(k<<14|k>>>18)^k>>>3)+a[p-7]+((l<<15|l>>>17)^(l<<13|l>>>19)^l>>>10)+a[p-16]}k=q+((h<<26|h>>>6)^(h<<21|h>>>11)^(h<<7|h>>>25))+(h&m^~h&n)+r[p]+a[p];l=((e<<30|e>>>2)^(e<<19|e>>>13)^(e<<10|e>>>22))+(e&f^e&g^f&g);q=n;n=m;m=h;h=j+k|0;j=g;g=f;f=e;e=k+l|0}b[0]=b[0]+e|0;b[1]=b[1]+f|0;b[2]=b[2]+g|0;b[3]=b[3]+j|0;b[4]=b[4]+h|0;b[5]=b[5]+m|0;b[6]=b[6]+n|0;b[7]=b[7]+q|0},_doFinalize:function(){var a=this._data,d=a.words,b=8*this._nDataBytes,e=8*a.sigBytes;
d[e>>>5]|=128<<24-e%32;d[(e+64>>>9<<4)+14]=h.floor(b/4294967296);d[(e+64>>>9<<4)+15]=b;a.sigBytes=4*d.length;this._process();return this._hash},clone:function(){var a=q.clone.call(this);a._hash=this._hash.clone();return a}});s.SHA256=q._createHelper(f);s.HmacSHA256=q._createHmacHelper(f)})(Math);
(function(){var h=CryptoJS,s=h.enc.Utf8;h.algo.HMAC=h.lib.Base.extend({init:function(f,g){f=this._hasher=new f.init;"string"==typeof g&&(g=s.parse(g));var h=f.blockSize,m=4*h;g.sigBytes>m&&(g=f.finalize(g));g.clamp();for(var r=this._oKey=g.clone(),l=this._iKey=g.clone(),k=r.words,n=l.words,j=0;j<h;j++)k[j]^=1549556828,n[j]^=909522486;r.sigBytes=l.sigBytes=m;this.reset()},reset:function(){var f=this._hasher;f.reset();f.update(this._iKey)},update:function(f){this._hasher.update(f);return this},finalize:function(f){var g=
this._hasher;f=g.finalize(f);g.reset();return g.finalize(this._oKey.clone().concat(f))}})})();

//oauth-1.0a

if (typeof(module) !== 'undefined' && typeof(exports) !== 'undefined') {
    module.exports = OAuth;
}

/**
 * Constructor
 * @param {Object} opts consumer key and secret
 */
function OAuth(opts) {
    if(!(this instanceof OAuth)) {
        return new OAuth(opts);
    }

    if(!opts) {
        opts = {};
    }

    if(!opts.consumer) {
        throw new Error('consumer option is required');
    }

    this.consumer            = opts.consumer;
    this.nonce_length        = opts.nonce_length || 32;
    this.version             = opts.version || '1.0';
    this.parameter_seperator = opts.parameter_seperator || ', ';
    this.realm               = opts.realm;

    if(typeof opts.last_ampersand === 'undefined') {
        this.last_ampersand = true;
    } else {
        this.last_ampersand = opts.last_ampersand;
    }

    // default signature_method is 'PLAINTEXT'
    this.signature_method = opts.signature_method || 'PLAINTEXT';

    if(this.signature_method == 'PLAINTEXT' && !opts.hash_function) {
        opts.hash_function = function(base_string, key) {
            return key;
        }
    }

    if(!opts.hash_function) {
        throw new Error('hash_function option is required');
    }

    this.hash_function = opts.hash_function;
    this.body_hash_function = opts.body_hash_function || this.hash_function;
}

/**
 * OAuth request authorize
 * @param  {Object} request data
 * {
 *     method,
 *     url,
 *     data
 * }
 * @param  {Object} key and secret token
 * @return {Object} OAuth Authorized data
 */
OAuth.prototype.authorize = function(request, token) {
    var oauth_data = {
        oauth_consumer_key: this.consumer.key,
        oauth_nonce: this.getNonce(),
        oauth_signature_method: this.signature_method,
        oauth_timestamp: this.getTimeStamp(),
        oauth_version: this.version
    };

    if(!token) {
        token = {};
    }

    if(token.key !== undefined) {
        oauth_data.oauth_token = token.key;
    }

    if(!request.data) {
        request.data = {};
    }

    if(request.includeBodyHash) {
    oauth_data.oauth_body_hash = this.getBodyHash(request, token.secret)
    }

    oauth_data.oauth_signature = this.getSignature(request, token.secret, oauth_data);

    return oauth_data;
};

/**
 * Create a OAuth Signature
 * @param  {Object} request data
 * @param  {Object} token_secret key and secret token
 * @param  {Object} oauth_data   OAuth data
 * @return {String} Signature
 */
OAuth.prototype.getSignature = function(request, token_secret, oauth_data) {
    return this.hash_function(this.getBaseString(request, oauth_data), this.getSigningKey(token_secret));
};

/**
 * Create a OAuth Body Hash
 * @param {Object} request data
 */
OAuth.prototype.getBodyHash = function(request, token_secret) {
var body = typeof request.data === 'string' ? request.data : JSON.stringify(request.data)

if (!this.body_hash_function) {
    throw new Error('body_hash_function option is required');
}

return this.body_hash_function(body, this.getSigningKey(token_secret))
};

/**
 * Base String = Method + Base Url + ParameterString
 * @param  {Object} request data
 * @param  {Object} OAuth data
 * @return {String} Base String
 */
OAuth.prototype.getBaseString = function(request, oauth_data) {
    return request.method.toUpperCase() + '&' + this.percentEncode(this.getBaseUrl(request.url)) + '&' + this.percentEncode(this.getParameterString(request, oauth_data));
};

/**
 * Get data from url
 * -> merge with oauth data
 * -> percent encode key & value
 * -> sort
 *
 * @param  {Object} request data
 * @param  {Object} OAuth data
 * @return {Object} Parameter string data
 */
OAuth.prototype.getParameterString = function(request, oauth_data) {
    var base_string_data;
    if (oauth_data.oauth_body_hash) {
        base_string_data = this.sortObject(this.percentEncodeData(this.mergeObject(oauth_data, this.deParamUrl(request.url))));
    } else {
        base_string_data = this.sortObject(this.percentEncodeData(this.mergeObject(oauth_data, this.mergeObject(request.data, this.deParamUrl(request.url)))));
    }

    var data_str = '';

    //base_string_data to string
    for(var i = 0; i < base_string_data.length; i++) {
        var key = base_string_data[i].key;
        var value = base_string_data[i].value;
        // check if the value is an array
        // this means that this key has multiple values
        if (value && Array.isArray(value)){
        // sort the array first
        value.sort();

        var valString = "";
        // serialize all values for this key: e.g. formkey=formvalue1&formkey=formvalue2
        value.forEach((function(item, i){
            valString += key + '=' + item;
            if (i < value.length){
            valString += "&";
            }
        }).bind(this));
        data_str += valString;
        } else {
        data_str += key + '=' + value + '&';
        }
    }

    //remove the last character
    data_str = data_str.substr(0, data_str.length - 1);
    return data_str;
};

/**
 * Create a Signing Key
 * @param  {String} token_secret Secret Token
 * @return {String} Signing Key
 */
OAuth.prototype.getSigningKey = function(token_secret) {
    token_secret = token_secret || '';

    if(!this.last_ampersand && !token_secret) {
        return this.percentEncode(this.consumer.secret);
    }

    return this.percentEncode(this.consumer.secret) + '&' + this.percentEncode(token_secret);
};

/**
 * Get base url
 * @param  {String} url
 * @return {String}
 */
OAuth.prototype.getBaseUrl = function(url) {
    return url.split('?')[0];
};

/**
 * Get data from String
 * @param  {String} string
 * @return {Object}
 */
OAuth.prototype.deParam = function(string) {
    var arr = string.split('&');
    var data = {};

    for(var i = 0; i < arr.length; i++) {
        var item = arr[i].split('=');

        // '' value
        item[1] = item[1] || '';

        // check if the key already exists
        // this can occur if the QS part of the url contains duplicate keys like this: ?formkey=formvalue1&formkey=formvalue2
        if (data[item[0]]){
        // the key exists already
        if (!Array.isArray(data[item[0]])) {
            // replace the value with an array containing the already present value
            data[item[0]] = [data[item[0]]];
        }
        // and add the new found value to it
        data[item[0]].push(decodeURIComponent(item[1]));
        } else {
        // it doesn't exist, just put the found value in the data object
        data[item[0]] = decodeURIComponent(item[1]);
        }
    }

    return data;
};

/**
 * Get data from url
 * @param  {String} url
 * @return {Object}
 */
OAuth.prototype.deParamUrl = function(url) {
    var tmp = url.split('?');

    if (tmp.length === 1)
        return {};

    return this.deParam(tmp[1]);
};

/**
 * Percent Encode
 * @param  {String} str
 * @return {String} percent encoded string
 */
OAuth.prototype.percentEncode = function(str) {
    return encodeURIComponent(str)
        .replace(/\!/g, "%21")
        .replace(/\*/g, "%2A")
        .replace(/\'/g, "%27")
        .replace(/\(/g, "%28")
        .replace(/\)/g, "%29");
};

/**
 * Percent Encode Object
 * @param  {Object} data
 * @return {Object} percent encoded data
 */
OAuth.prototype.percentEncodeData = function(data) {
    var result = {};

    for(var key in data) {
        var value = data[key];
        // check if the value is an array
        if (value && Array.isArray(value)){
        var newValue = [];
        // percentEncode every value
        value.forEach((function(val){
            newValue.push(this.percentEncode(val));
        }).bind(this));
        value = newValue;
        } else {
        value = this.percentEncode(value);
        }
        result[this.percentEncode(key)] = value;
    }

    return result;
};

/**
 * Get OAuth data as Header
 * @param  {Object} oauth_data
 * @return {String} Header data key - value
 */
OAuth.prototype.toHeader = function(oauth_data) {
    var sorted = this.sortObject(oauth_data);

    var header_value = 'OAuth ';

    if (this.realm) {
        header_value += 'realm="' + this.realm + '"' + this.parameter_seperator;
    }

    for(var i = 0; i < sorted.length; i++) {
        if (sorted[i].key.indexOf('oauth_') !== 0)
            continue;

        header_value += this.percentEncode(sorted[i].key) + '="' + this.percentEncode(sorted[i].value) + '"' + this.parameter_seperator;
    }

    return {
        Authorization: header_value.substr(0, header_value.length - this.parameter_seperator.length) //cut the last chars
    };
};

/**
 * Create a random word characters string with input length
 * @return {String} a random word characters string
 */
OAuth.prototype.getNonce = function() {
    var word_characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    var result = '';

    for(var i = 0; i < this.nonce_length; i++) {
        result += word_characters[parseInt(Math.random() * word_characters.length, 10)];
    }

    return result;
};

/**
 * Get Current Unix TimeStamp
 * @return {Int} current unix timestamp
 */
OAuth.prototype.getTimeStamp = function() {
    return parseInt(new Date().getTime()/1000, 10);
};

////////////////////// HELPER FUNCTIONS //////////////////////

/**
 * Merge object
 * @param  {Object} obj1
 * @param  {Object} obj2
 * @return {Object}
 */
OAuth.prototype.mergeObject = function(obj1, obj2) {
    obj1 = obj1 || {};
    obj2 = obj2 || {};

    var merged_obj = obj1;
    for(var key in obj2) {
        merged_obj[key] = obj2[key];
    }
    return merged_obj;
};

/**
 * Sort object by key
 * @param  {Object} data
 * @return {Array} sorted array
 */
OAuth.prototype.sortObject = function(data) {
    var keys = Object.keys(data);
    var result = [];

    keys.sort();

    for(var i = 0; i < keys.length; i++) {
        var key = keys[i];
        result.push({
            key: key,
            value: data[key],
        });
    }

    return result;
};

//NETSUITE'S RESTLET

function callRESTlet(request, response) {
    var remoteAccountID = 'ACCOUNT ID HERE';
    var restletUrl = 'https://rest.netsuite.com/app/site/hosting/restlet.nl?script=992&deploy=1';
    //user token
    var token = {
        key: 'ACCESS KEY HERE',
        secret: 'ACCESS SECRET HERE'
    };
    //app credentials
    var oauth = OAuth({
        consumer: {
            key: 'INTEGRATION KEY HERE',
            secret: 'INTEGRATION SECRET HERE'
        },
        signature_method: 'HMAC-SHA1',
        hash_function: function(base_string, key)
        {
            return CryptoJS.HmacSHA1(base_string, key).toString(CryptoJS.enc.Base64);
        }
    });

    var request_data = {
        url: restletUrl,
        method: 'GET',
        data: {}
    };

    var oauth_data = {
        oauth_consumer_key: oauth.consumer.key,
        oauth_nonce: oauth.getNonce(),
        oauth_signature_method: oauth.signature_method,
        oauth_timestamp: oauth.getTimeStamp(),
        oauth_version: '1.0',
        oauth_token: token.key,
        realm: remoteAccountID
    };

    var headerWithRealm = oauth.toHeader(oauth.authorize(request_data, token));
    headerWithRealm.Authorization += ',realm="' + remoteAccountID + '"';

    var restResponse = nlapiRequestURL(restletUrl, null, headerWithRealm, null, "GET");

    var html = 'Calling: ' +
        restletUrl +
        '<br><br>' +
        'Generated OAuth header:<br>' +
        headerWithRealm.Authorization +
        '<br><br>' +
        'Response:<br>' +
        restResponse.getBody() 
    response.write(html);
}

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