1 | 'use strict';
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2 |
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3 | const PassThrough = require('stream').PassThrough;
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4 |
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5 | const Promise = require('bluebird');
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6 | const Ftp = require('basic-ftp');
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7 | const Mime = require('mime');
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8 |
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9 | const Tools = require('unifile-common-tools');
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10 | const {UnifileError} = require('./error');
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11 |
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12 | const NAME = 'ftp';
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13 |
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14 |
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15 |
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16 |
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17 |
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18 |
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19 | function getClient(credentials) {
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20 | const ftp = new Ftp.Client();
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21 | return ftp.access(credentials)
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22 | .then(() => ftp);
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23 | }
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24 |
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25 | function callAPI(session, action, client, ...params) {
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26 | function execute(ftpClient) {
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27 |
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28 | const absParams = params.map((p) => {
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29 | if(p.constructor === String) return '/' + p;
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30 | return p;
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31 | });
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32 | switch (action) {
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33 | case 'ls':
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34 | case 'stat':
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35 | return ftpClient.list(...absParams);
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36 | case 'put':
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37 | return ftpClient.upload(...absParams);
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38 | case 'get':
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39 | return ftpClient.download(...absParams);
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40 | case 'rename':
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41 | return ftpClient.rename(...absParams);
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42 | case 'delete':
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43 | return ftpClient.remove(...absParams);
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44 | case 'rmdir':
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45 | return ftpClient.removeDir(...absParams);
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46 | case 'mkdir':
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47 | return ftpClient.send(`MKD ${absParams[0]}`);
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48 | default:
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49 | throw new UnifileError(UnifileError.ENOTSUP, `Unsupported FTP command ${action}`);
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50 | }
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51 | }
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52 |
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53 | let ftp = client;
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54 | let promise = null;
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55 | if(ftp) {
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56 | promise = execute(ftp);
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57 | } else {
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58 | promise = getClient(session)
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59 | .then((ftpClient) => {
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60 | ftp = ftpClient;
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61 | return execute(ftp);
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62 | });
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63 | }
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64 |
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65 | return promise.catch((err) => {
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66 | if(err.code === 530) {
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67 | throw new UnifileError(UnifileError.EACCES, 'Invalid credentials');
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68 | } else if(err.code >= 400 && err.code < 500) {
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69 | throw new UnifileError(UnifileError.ENOENT, 'Not found');
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70 | }
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71 | throw new UnifileError(UnifileError.EIO, err.message);
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72 | })
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73 | .then((result) => {
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74 |
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75 | if(!client && result && !result.readable) {
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76 | ftp.close();
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77 | }
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78 | return result;
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79 | });
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80 | }
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81 |
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82 | function toFileInfos(entry) {
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83 | return {
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84 | size: entry.size,
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85 | modified: new Date(entry.date).toISOString(),
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86 | name: entry.name.split('/').pop(),
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87 | isDir: entry.isDirectory,
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88 | mime: entry.isDirectory ? 'application/directory' : Mime.getType(entry.name)
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89 | };
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90 | }
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91 |
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92 |
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93 |
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94 |
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95 | class FtpConnector {
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96 | |
97 |
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98 |
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99 |
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100 |
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101 |
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102 |
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103 | constructor(config) {
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104 | if(!config || !config.redirectUri)
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105 | throw new Error('You should at least set a redirectUri for this connector');
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106 |
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107 | this.redirectUri = config.redirectUri;
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108 | this.showHiddenFile = config.showHiddenFile || false;
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109 | this.infos = Tools.mergeInfos(config.infos || {}, {
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110 | name: NAME,
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111 | displayName: 'FTP',
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112 | icon: '../assets/ftp.png',
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113 | description: 'Edit files on a web FTP server.'
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114 | });
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115 | this.name = this.infos.name;
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116 | }
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117 |
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118 | getInfos(session) {
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119 | return Object.assign({
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120 | isLoggedIn: (session && 'token' in session),
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121 | isOAuth: false,
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122 | username: session.user
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123 | }, this.infos);
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124 | }
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125 |
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126 | getAuthorizeURL(session) {
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127 | return Promise.resolve(this.redirectUri);
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128 | }
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129 |
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130 | setAccessToken(session, token) {
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131 | session.token = token;
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132 | return Promise.resolve(token);
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133 | }
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134 |
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135 | clearAccessToken(session) {
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136 | Tools.clearSession(session);
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137 | return Promise.resolve();
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138 | }
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139 |
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140 | login(session, loginInfos) {
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141 | const ftpConf = {};
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142 | try {
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143 | Object.assign(ftpConf, Tools.parseBasicAuth(loginInfos));
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144 | ftpConf.pass = ftpConf.password;
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145 | } catch (e) {
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146 | return Promise.reject(e);
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147 | }
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148 |
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149 | const client = new Ftp.Client();
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150 | return client.access(ftpConf)
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151 | .catch((err) => {
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152 | if(err.code === 'ETIMEDOUT')
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153 | throw new UnifileError(UnifileError.EIO, 'Unable to reach server');
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154 | else
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155 | throw new UnifileError(UnifileError.EACCES, 'Invalid credentials');
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156 | })
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157 | .then(() => {
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158 | Object.assign(session, ftpConf);
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159 | this.setAccessToken(session, ftpConf.user);
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160 | });
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161 | }
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162 |
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163 |
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164 |
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165 | readdir(session, path, ftpSession) {
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166 | return callAPI(session, 'ls', ftpSession, path)
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167 | .then((list) => {
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168 | return list.reduce((memo, entry) => {
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169 | if(this.showHiddenFile || entry.name.charAt(0) != '.')
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170 | memo.push(toFileInfos(entry));
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171 | return memo;
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172 | }, []);
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173 | });
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174 | }
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175 |
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176 | stat(session, path, ftpSession) {
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177 | return callAPI(session, 'stat', ftpSession, path)
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178 | .then((result) => {
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179 | if(result.length > 1)
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180 |
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181 | return {
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182 | size: 4096,
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183 | modified: new Date(Math.min(...result.map((entry) => new Date(entry.date).getTime()))).toISOString(),
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184 | name: path,
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185 | isDir: true,
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186 | mime: 'application/directory'
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187 | };
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188 | else return toFileInfos(result[0]);
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189 | });
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190 | }
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191 |
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192 | mkdir(session, path, ftpSession) {
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193 | return callAPI(session, 'mkdir', ftpSession, path);
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194 | }
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195 |
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196 | writeFile(session, path, data, ftpSession) {
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197 | const stream = new PassThrough();
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198 | stream.end(data);
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199 | return callAPI(session, 'put', ftpSession, stream, path);
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200 | }
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201 |
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202 | createWriteStream(session, path, ftpSession) {
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203 | var through = new PassThrough();
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204 | callAPI(session, 'put', ftpSession, through, path);
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205 | return through;
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206 | }
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207 |
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208 | readFile(session, path, ftpSession) {
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209 | var fileStream = new PassThrough();
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210 | return callAPI(session, 'get', ftpSession, fileStream, path)
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211 | .then(() => {
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212 | return new Promise((resolve, reject) => {
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213 | const chunks = [];
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214 | fileStream.on('data', (chunk) => chunks.push(chunk));
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215 | fileStream.on('end', () => resolve(Buffer.concat(chunks)));
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216 | fileStream.on('error', (err) => {
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217 | reject(err);
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218 | });
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219 | });
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220 | });
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221 | }
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222 |
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223 | createReadStream(session, path, ftpSession) {
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224 | var through = new PassThrough();
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225 | callAPI(session, 'get', ftpSession, through, path)
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226 | .catch((err) => through.emit('error', err));
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227 | return through;
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228 | }
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229 |
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230 | rename(session, src, dest, ftpSession) {
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231 | return callAPI(session, 'rename', ftpSession, src, dest);
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232 | }
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233 |
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234 | unlink(session, path, ftpSession) {
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235 | return callAPI(session, 'delete', ftpSession, path);
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236 | }
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237 |
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238 | rmdir(session, path, ftpSession) {
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239 | return callAPI(session, 'rmdir', ftpSession, path);
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240 | }
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241 |
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242 | batch(session, actions, message) {
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243 | let ftpClient;
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244 | return getClient(session)
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245 | .then((ftp) => {
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246 | ftpClient = ftp;
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247 | return Promise.each(actions, (action) => {
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248 | const act = action.name.toLowerCase();
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249 | switch (act) {
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250 | case 'unlink':
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251 | case 'rmdir':
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252 | case 'mkdir':
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253 | return this[act](session, action.path, ftpClient);
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254 | case 'rename':
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255 | return this[act](session, action.path, action.destination, ftpClient);
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256 | case 'writefile':
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257 | return this.writeFile(session, action.path, action.content, ftpClient);
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258 | default:
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259 | console.warn(`Unsupported batch action: ${action.name}`);
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260 | }
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261 | });
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262 | });
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263 | }
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264 | }
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265 |
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266 | module.exports = FtpConnector;
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