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porter.js
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porter.js
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var request = require('request');
var util = require('util');
var Q = require('q');
var cheerio = require('cheerio');
var winston = require('winston');
var Joi = require('Joi');
var emojiListUrl = 'https://slack.com/api/emoji.list';
var emojiUploadFormPath = '/admin/emoji';
var emojiUploadImagePath = '/customize/emoji';
var emojiJsonSchema = Joi.object().pattern(/.*/,
Joi.string().regex(/^(https:\/\/[^\.]+?\.slack-edge\.com.*|alias:)/));
/**
* Fetch the login page
*/
function getLoginPage(options) {
var deferred = Q.defer();
winston.info('getLoginPage for: ',
options.info.remoteAddress,
' -- ',
options.url);
options.jar = options.jar || request.jar();
request({
url: options.url,
jar: options.jar,
method: 'GET'
}, function(error, response, body) {
if (error) {
return deferred.reject(error);
} else if (response.statusCode == 404) {
var e = new Error('team page not found');
e.url = options.url;
e.statusCode = 404;
return deferred.reject(e);
}
var $ = cheerio.load(body);
options.formData = {
signin: $('#signin_form input[name="signin"]').attr('value'),
redir: $('#signin_form input[name="redir"]').attr('value'),
crumb: $('#signin_form input[name="crumb"]').attr('value'),
remember: 'on',
email: options.email,
password: options.password
};
deferred.resolve(options);
});
return deferred.promise;
}
/**
* Login and populate cookies
*/
function postLoginPage(options) {
var deferred = Q.defer();
winston.info('postLoginPage for: ',
options.info.remoteAddress,
' -- ',
options.url);
request({
url: options.url,
jar: options.jar,
method: 'POST',
followAllRedirects: true,
formData: options.formData
}, function(error, response, body) {
delete(options.formData);
if (error) {
return deferred.reject(error);
} else if (!options.jar.getCookies(options.url).length) {
var e = new Error('invalid password');
e.statusCode = 401;
e.url = options.url;
return deferred.reject(e);
}
deferred.resolve(options);
});
return deferred.promise;
}
/**
* Fetch the list of emojis
*/
function fetchEmojiList(options) {
var deferred = Q.defer();
winston.info('fetchEmojiList for: ',
options.info.remoteAddress,
' -- ',
emojiListUrl);
if (options.emojiJson) {
try {
options.emojiJson = JSON.parse(options.emojiJson);
} catch(err) {
deferred.reject(new Error('error parsing emoji json'));
return deferred.promise;
}
options.emoji = processEmoji(options.emojiJson.emoji || options.emojiJson);
if (emojiJsonSchema.validate(options.emoji).error) {
deferred.reject(new Error('invalid raw emoji json'));
} else {
deferred.resolve(options);
}
} else {
request({
url: emojiListUrl,
jar: options.jar,
json: true,
formData: {
token: options.token
},
method: 'POST'
}, function(error, response, body) {
if (error || !body || !body.ok || !body.emoji) {
return deferred.reject(error);
}
options.emoji = processEmoji(body.emoji);
deferred.resolve(options);
});
}
return deferred.promise;
}
function processEmoji(json) {
for (var e in json) {
if (json[e].match(/^alias:/)) {
delete(json[e]);
}
}
return json;
}
/**
* Get the emoji upload page
*/
function getEmojiUploadPage(options) {
var deferred = Q.defer();
winston.info('getEmojiUploadPage for: ',
options.info.remoteAddress,
' -- ',
options.url + emojiUploadFormPath);
request({
url: options.url + emojiUploadFormPath,
jar: options.jar,
method: 'GET'
}, function(error, response, body) {
if (error) {
return deferred.reject(error);
}
var $ = cheerio.load(body);
options.uploadCrumb = $('#addemoji > input[name="crumb"]').attr('value');
deferred.resolve(options);
});
return deferred.promise;
}
/**
* Transfer an emoji between teams.
*/
function transferEmoji(toOptions, emojiName, emojiUrl) {
var deferred = Q.defer();
winston.info('transferEmoji for: ',
toOptions.info.remoteAddress,
' -- ',
emojiName,
' -- ',
emojiUrl);
var r = request({
url: toOptions.url + emojiUploadImagePath,
method: 'POST',
jar: toOptions.jar,
followAllRedirects: true
}, function(error, response, body) {
if (error || !body) {
return deferred.reject(error);
}
deferred.resolve();
});
var form = r.form();
form.append('add', '1');
form.append('crumb', toOptions.uploadCrumb);
form.append('name', emojiName);
form.append('mode', 'data');
form.append('img', request(emojiUrl));
return deferred.promise;
}
module.exports.getLoginPage = getLoginPage;
module.exports.postLoginPage = postLoginPage;
module.exports.fetchEmojiList = fetchEmojiList;
module.exports.getEmojiUploadPage = getEmojiUploadPage;
module.exports.transferEmoji = transferEmoji;