Created
June 12, 2012 05:28
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Google Apps 2 legged OAuth of Google Calendar API with Google Apps Script. Please import oauth.js and sha1.js from http://code.google.com/p/oauth/. if you happen any problem,Please modify oauth.js to below oauth.js code.
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| function twoleggedOAuth() { | |
| var action = "https://www.google.com/calendar/feeds/default/private/full?xoauth_requestor_id={user mail address}"; | |
| var accessor = { consumerSecret: '{consumerSecret}' }; | |
| var message = { method: 'get', action: action, parameters: {}, }; | |
| OAuth.setParameter(message, 'oauth_version', '1.0'); | |
| OAuth.setParameter(message, 'oauth_nonce', OAuth.nonce(32)); | |
| OAuth.setParameter(message, 'oauth_timestamp', OAuth.timestamp()); | |
| OAuth.setParameter(message, 'oauth_consumer_key', '{your domain}'); | |
| OAuth.SignatureMethod.sign(message, accessor); | |
| var val = OAuth.getAuthorizationHeader(null,message.parameters); | |
| var option = | |
| {"method": message.method, | |
| headers : {"Authorization" : val,"GData-Version" : "2.0"} | |
| }; | |
| //Send Request | |
| try { | |
| var res = UrlFetchApp.fetch(action, option); | |
| } catch(e) { | |
| e.message.match(/&gsessionid=(.+) に/); //get gsessionid,But it's japanese locale. if you need any another local,please hack error responce. | |
| var gsessionid = RegExp.$1; | |
| var m2 = { method: 'get', action: action, parameters: {"gsessionid": gsessionid}}; | |
| OAuth.setParameter(m2, 'oauth_version', '1.0'); | |
| OAuth.setParameter(m2, 'oauth_nonce', OAuth.nonce(32)); | |
| OAuth.setParameter(m2, 'oauth_timestamp', OAuth.timestamp()); | |
| OAuth.setParameter(m2, 'oauth_consumer_key', '{your domain}'); | |
| OAuth.SignatureMethod.sign(m2, accessor); | |
| var val2 = OAuth.getAuthorizationHeader(null,m2.parameters); | |
| action += "&gsessionid=" + gsessionid; | |
| Logger.log(val2); | |
| Logger.log(action); | |
| option = { | |
| "method": m2.method, | |
| headers : {"Authorization" : val2,"GData-Version" : "2.0"} | |
| }; | |
| res = UrlFetchApp.fetch(action , option); | |
| } | |
| //display | |
| var test = res.getContentText("UTF-8"); | |
| Logger.log(test); | |
| } |
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| //on oauth.js OAuth class. | |
| getAuthorizationHeader: function getAuthorizationHeader(realm, parameters) { | |
| var header = 'OAuth '; | |
| if(realm != null) header += 'realm="' + OAuth.percentEncode(realm) + '"'; | |
| var list = OAuth.getParameterList(parameters); | |
| for (var p = 0; p < list.length; ++p) { | |
| var parameter = list[p]; | |
| var name = parameter[0]; | |
| if (name.indexOf("oauth_") == 0) { | |
| header += OAuth.percentEncode(name) + '="' + OAuth.percentEncode(parameter[1]) + '"'; | |
| if(p < list.length -1) { | |
| header += ', '; | |
| } | |
| } | |
| } | |
| return header; | |
| } | |
| // | |
| OAuth.nonce.CHARS = "0123456789abcdef"; |
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