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1 | ;(function () { | |
2 | 'use strict' | |
3 | ||
4 | var async = require('async') | |
5 | var config = require('config') | |
6 | var crypto = require('crypto') | |
7 | var fs = require('fs') | |
8 | var openssl = require('openssl-wrapper') | |
9 | var request = require('request') | |
10 | var replay = require('request-replay') | |
11 | var ursa = require('ursa') | |
12 | ||
13 | var constants = require('./constants') | |
14 | var logger = require('./logger') | |
15 | ||
16 | var utils = {} | |
17 | ||
18 | var http = config.get('webserver.https') ? 'https' : 'http' | |
19 | var host = config.get('webserver.host') | |
20 | var port = config.get('webserver.port') | |
21 | var algorithm = 'aes-256-ctr' | |
22 | ||
23 | // ----------- Private functions ---------- | |
24 | ||
25 | function makeRetryRequest (params, from_url, to_pod, signature, callbackEach) { | |
26 | // Append the signature | |
27 | if (signature) { | |
28 | params.json.signature = { | |
29 | url: from_url, | |
30 | signature: signature | |
31 | } | |
32 | } | |
33 | ||
34 | logger.debug('Make retry requests to %s.', to_pod.url) | |
35 | ||
36 | replay( | |
37 | request.post(params, function (err, response, body) { | |
38 | callbackEach(err, response, body, params.url, to_pod) | |
39 | }), | |
40 | { | |
41 | retries: constants.REQUEST_RETRIES, | |
42 | factor: 3, | |
43 | maxTimeout: Infinity, | |
44 | errorCodes: [ 'EADDRINFO', 'ETIMEDOUT', 'ECONNRESET', 'ESOCKETTIMEDOUT', 'ENOTFOUND', 'ECONNREFUSED' ] | |
45 | } | |
46 | ).on('replay', function (replay) { | |
47 | logger.info('Replaying request to %s. Request failed: %d %s. Replay number: #%d. Will retry in: %d ms.', | |
48 | params.url, replay.error.code, replay.error.message, replay.number, replay.delay) | |
49 | }) | |
50 | } | |
51 | ||
52 | // ----------- Public attributes ---------- | |
53 | utils.certDir = __dirname + '/../' + config.get('storage.certs') | |
54 | ||
55 | // { path, data } | |
56 | utils.makeMultipleRetryRequest = function (all_data, pods, callbackEach, callback) { | |
57 | if (!callback) { | |
58 | callback = callbackEach | |
59 | callbackEach = null | |
60 | } | |
61 | ||
62 | var url = http + '://' + host + ':' + port | |
63 | var signature | |
64 | ||
65 | // Add signature if it is specified in the params | |
66 | if (all_data.method === 'POST' && all_data.data && all_data.sign === true) { | |
67 | var myKey = ursa.createPrivateKey(fs.readFileSync(utils.certDir + 'peertube.key.pem')) | |
68 | signature = myKey.hashAndSign('sha256', url, 'utf8', 'hex') | |
69 | } | |
70 | ||
71 | // Make a request for each pod | |
72 | async.each(pods, function (pod, callback_each_async) { | |
73 | function callbackEachRetryRequest (err, response, body, url, pod) { | |
74 | if (callbackEach !== null) { | |
75 | callbackEach(err, response, body, url, pod, function () { | |
76 | callback_each_async() | |
77 | }) | |
78 | } else { | |
79 | callback_each_async() | |
80 | } | |
81 | } | |
82 | ||
83 | var params = { | |
84 | url: pod.url + all_data.path, | |
85 | method: all_data.method | |
86 | } | |
87 | ||
88 | // Add data with POST requst ? | |
89 | if (all_data.method === 'POST' && all_data.data) { | |
90 | // Encrypt data ? | |
91 | if (all_data.encrypt === true) { | |
92 | var crt = ursa.createPublicKey(pod.publicKey) | |
93 | ||
94 | // TODO: ES6 with let | |
95 | ;(function (crt_copy, copy_params, copy_url, copy_pod, copy_signature) { | |
96 | utils.symetricEncrypt(JSON.stringify(all_data.data), function (err, dataEncrypted) { | |
97 | if (err) throw err | |
98 | ||
99 | var passwordEncrypted = crt_copy.encrypt(dataEncrypted.password, 'utf8', 'hex') | |
100 | copy_params.json = { | |
101 | data: dataEncrypted.crypted, | |
102 | key: passwordEncrypted | |
103 | } | |
104 | ||
105 | makeRetryRequest(copy_params, copy_url, copy_pod, copy_signature, callbackEachRetryRequest) | |
106 | }) | |
107 | })(crt, params, url, pod, signature) | |
108 | } else { | |
109 | params.json = { data: all_data.data } | |
110 | makeRetryRequest(params, url, pod, signature, callbackEachRetryRequest) | |
111 | } | |
112 | } else { | |
113 | makeRetryRequest(params, url, pod, signature, callbackEachRetryRequest) | |
114 | } | |
115 | }, callback) | |
116 | } | |
117 | ||
118 | utils.certsExist = function (callback) { | |
119 | fs.exists(utils.certDir + 'peertube.key.pem', function (exists) { | |
120 | return callback(exists) | |
121 | }) | |
122 | } | |
123 | ||
124 | utils.createCerts = function (callback) { | |
125 | utils.certsExist(function (exist) { | |
126 | if (exist === true) { | |
127 | var string = 'Certs already exist.' | |
128 | logger.warning(string) | |
129 | return callback(new Error(string)) | |
130 | } | |
131 | ||
132 | logger.info('Generating a RSA key...') | |
133 | openssl.exec('genrsa', { 'out': utils.certDir + 'peertube.key.pem', '2048': false }, function (err) { | |
134 | if (err) { | |
135 | logger.error('Cannot create private key on this pod.', { error: err }) | |
136 | return callback(err) | |
137 | } | |
138 | logger.info('RSA key generated.') | |
139 | ||
140 | logger.info('Manage public key...') | |
141 | openssl.exec('rsa', { 'in': utils.certDir + 'peertube.key.pem', 'pubout': true, 'out': utils.certDir + 'peertube.pub' }, function (err) { | |
142 | if (err) { | |
143 | logger.error('Cannot create public key on this pod .', { error: err }) | |
144 | return callback(err) | |
145 | } | |
146 | ||
147 | logger.info('Public key managed.') | |
148 | return callback(null) | |
149 | }) | |
150 | }) | |
151 | }) | |
152 | } | |
153 | ||
154 | utils.createCertsIfNotExist = function (callback) { | |
155 | utils.certsExist(function (exist) { | |
156 | if (exist === true) { | |
157 | return callback(null) | |
158 | } | |
159 | ||
160 | utils.createCerts(function (err) { | |
161 | return callback(err) | |
162 | }) | |
163 | }) | |
164 | } | |
165 | ||
166 | utils.generatePassword = function (callback) { | |
167 | crypto.randomBytes(32, function (err, buf) { | |
168 | if (err) { | |
169 | return callback(err) | |
170 | } | |
171 | ||
172 | callback(null, buf.toString('utf8')) | |
173 | }) | |
174 | } | |
175 | ||
176 | utils.symetricEncrypt = function (text, callback) { | |
177 | utils.generatePassword(function (err, password) { | |
178 | if (err) { | |
179 | return callback(err) | |
180 | } | |
181 | ||
182 | var cipher = crypto.createCipher(algorithm, password) | |
183 | var crypted = cipher.update(text, 'utf8', 'hex') | |
184 | crypted += cipher.final('hex') | |
185 | callback(null, { crypted: crypted, password: password }) | |
186 | }) | |
187 | } | |
188 | ||
189 | utils.symetricDecrypt = function (text, password) { | |
190 | var decipher = crypto.createDecipher(algorithm, password) | |
191 | var dec = decipher.update(text, 'hex', 'utf8') | |
192 | dec += decipher.final('utf8') | |
193 | return dec | |
194 | } | |
195 | ||
196 | utils.cleanForExit = function (webtorrent_process) { | |
197 | logger.info('Gracefully exiting') | |
198 | process.kill(-webtorrent_process.pid) | |
199 | } | |
200 | ||
201 | module.exports = utils | |
202 | })() |