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34 lines
1012 B
34 lines
1012 B
var crypto = require('crypto')
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, qs = require('querystring')
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;
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function sha1 (key, body) {
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return crypto.createHmac('sha1', key).update(body).digest('base64')
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}
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function rfc3986 (str) {
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return encodeURIComponent(str)
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.replace(/!/g,'%21')
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.replace(/\*/g,'%2A')
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.replace(/\(/g,'%28')
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.replace(/\)/g,'%29')
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.replace(/'/g,'%27')
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;
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}
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function hmacsign (httpMethod, base_uri, params, consumer_secret, token_secret, body) {
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// adapted from https://dev.twitter.com/docs/auth/oauth
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var base =
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(httpMethod || 'GET') + "&" +
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encodeURIComponent( base_uri ) + "&" +
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Object.keys(params).sort().map(function (i) {
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// big WTF here with the escape + encoding but it's what twitter wants
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return escape(rfc3986(i)) + "%3D" + escape(rfc3986(params[i]))
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}).join("%26")
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var key = encodeURIComponent(consumer_secret) + '&'
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if (token_secret) key += encodeURIComponent(token_secret)
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return sha1(key, base)
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}
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exports.hmacsign = hmacsign
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exports.rfc3986 = rfc3986
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