1 | 'use strict';
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2 |
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3 | const Path = require('path');
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4 |
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5 | const Boom = require('@hapi/boom');
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6 | const Bounce = require('@hapi/bounce');
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7 | const Hoek = require('@hapi/hoek');
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8 | const Validate = require('@hapi/validate');
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9 |
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10 | const File = require('./file');
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11 | const Fs = require('./fs');
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12 |
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13 |
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14 | const internals = {};
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15 |
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16 |
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17 | internals.schema = Validate.object({
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18 | path: Validate.alternatives(Validate.array().items(Validate.string()).single(), Validate.func()).required(),
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19 | index: Validate.alternatives(Validate.boolean(), Validate.array().items(Validate.string()).single()).default(true),
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20 | listing: Validate.boolean(),
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21 | showHidden: Validate.boolean(),
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22 | redirectToSlash: Validate.boolean(),
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23 | lookupCompressed: Validate.boolean(),
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24 | lookupMap: Validate.object().min(1).pattern(/.+/, Validate.string()),
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25 | etagMethod: Validate.string().valid('hash', 'simple').allow(false),
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26 | defaultExtension: Validate.string().alphanum()
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27 | });
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28 |
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29 |
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30 | internals.resolvePathOption = function (result) {
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31 |
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32 | if (result instanceof Error) {
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33 | throw result;
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34 | }
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35 |
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36 | if (typeof result === 'string') {
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37 | return [result];
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38 | }
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39 |
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40 | if (Array.isArray(result)) {
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41 | return result;
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42 | }
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43 |
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44 | throw Boom.internal('Invalid path function');
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45 | };
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46 |
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47 |
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48 | exports.handler = function (route, options) {
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49 |
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50 | const settings = Validate.attempt(options, internals.schema, 'Invalid directory handler options (' + route.path + ')');
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51 | Hoek.assert(route.path[route.path.length - 1] === '}', 'The route path for a directory handler must end with a parameter:', route.path);
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52 |
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53 | const paramName = /\w+/.exec(route.path.slice(route.path.lastIndexOf('{')))[0];
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54 | const basePath = route.settings.files.relativeTo;
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55 |
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56 | const normalized = (Array.isArray(settings.path) ? settings.path : null);
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57 | const indexNames = (settings.index === true) ? ['index.html'] : (settings.index || []);
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58 |
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59 |
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60 |
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61 | const handler = async (request, reply) => {
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62 |
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63 | const paths = normalized || internals.resolvePathOption(settings.path.call(null, request));
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64 |
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65 |
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66 |
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67 | const selection = request.params[paramName];
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68 | if (selection &&
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69 | !settings.showHidden &&
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70 | internals.isFileHidden(selection)) {
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71 |
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72 | throw Boom.notFound(null, {});
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73 | }
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74 |
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75 | if (!selection &&
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76 | (request.server.settings.router.stripTrailingSlash || !request.path.endsWith('/'))) {
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77 |
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78 | request.path += '/';
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79 | }
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80 |
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81 |
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82 |
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83 | const resource = request.path;
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84 | const hasTrailingSlash = resource.endsWith('/');
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85 | const fileOptions = {
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86 | confine: null,
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87 | lookupCompressed: settings.lookupCompressed,
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88 | lookupMap: settings.lookupMap,
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89 | etagMethod: settings.etagMethod
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90 | };
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91 |
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92 | const each = async (baseDir) => {
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93 |
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94 | fileOptions.confine = baseDir;
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95 |
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96 | let path = selection || '';
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97 | let error;
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98 |
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99 | try {
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100 | return await File.load(path, request, fileOptions);
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101 | }
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102 | catch (err) {
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103 | Bounce.ignore(err, 'boom');
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104 | error = err;
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105 | }
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106 |
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107 |
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108 |
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109 | if (internals.isNotFound(error)) {
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110 | if (!settings.defaultExtension) {
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111 | throw error;
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112 | }
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113 |
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114 | if (hasTrailingSlash) {
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115 | path = path.slice(0, -1);
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116 | }
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117 |
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118 | return await File.load(path + '.' + settings.defaultExtension, request, fileOptions);
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119 | }
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120 |
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121 |
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122 |
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123 | if (internals.isDirectory(error)) {
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124 | if (settings.redirectToSlash !== false &&
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125 | !request.server.settings.router.stripTrailingSlash &&
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126 | !hasTrailingSlash) {
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127 |
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128 | return reply.redirect(resource + '/');
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129 | }
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130 |
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131 | for (const indexName of indexNames) {
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132 | const indexFile = Path.join(path, indexName);
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133 | try {
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134 | return await File.load(indexFile, request, fileOptions);
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135 | }
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136 | catch (err) {
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137 | Bounce.ignore(err, 'boom');
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138 |
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139 | if (!internals.isNotFound(err)) {
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140 | throw Boom.internal(indexName + ' is a directory', err);
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141 | }
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142 |
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143 |
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144 | }
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145 | }
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146 |
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147 |
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148 |
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149 | if (settings.listing) {
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150 | return internals.generateListing(Path.join(basePath, baseDir, path), resource, selection, hasTrailingSlash, settings, request);
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151 | }
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152 | }
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153 |
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154 | throw error;
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155 | };
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156 |
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157 | for (let i = 0; i < paths.length; ++i) {
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158 | try {
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159 | return await each(paths[i]);
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160 | }
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161 | catch (err) {
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162 | Bounce.ignore(err, 'boom');
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163 |
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164 |
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165 |
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166 | if (!internals.isNotFound(err) ||
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167 | i === paths.length - 1) {
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168 | throw err;
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169 | }
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170 | }
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171 | }
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172 |
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173 | throw Boom.notFound(null, {});
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174 | };
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175 |
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176 | return handler;
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177 | };
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178 |
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179 |
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180 | internals.generateListing = async function (path, resource, selection, hasTrailingSlash, settings, request) {
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181 |
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182 | let files;
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183 | try {
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184 | files = await Fs.readdir(path);
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185 | }
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186 | catch (err) {
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187 | Bounce.rethrow(err, 'system');
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188 | throw Boom.internal('Error accessing directory', err);
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189 | }
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190 |
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191 | resource = decodeURIComponent(resource);
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192 | const display = Hoek.escapeHtml(resource);
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193 | let html = '<html><head><title>' + display + '</title></head><body><h1>Directory: ' + display + '</h1><ul>';
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194 |
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195 | if (selection) {
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196 | const parent = resource.substring(0, resource.lastIndexOf('/', resource.length - (hasTrailingSlash ? 2 : 1))) + '/';
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197 | html = html + '<li><a href="' + internals.pathEncode(parent) + '">Parent Directory</a></li>';
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198 | }
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199 |
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200 | for (let i = 0; i < files.length; ++i) {
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201 | if (settings.showHidden ||
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202 | !internals.isFileHidden(files[i])) {
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203 |
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204 | html = html + '<li><a href="' + internals.pathEncode(resource + (!hasTrailingSlash ? '/' : '') + files[i]) + '">' + Hoek.escapeHtml(files[i]) + '</a></li>';
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205 | }
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206 | }
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207 |
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208 | html = html + '</ul></body></html>';
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209 |
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210 | return request.generateResponse(html);
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211 | };
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212 |
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213 |
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214 | internals.isFileHidden = function (path) {
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215 |
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216 | return /(^|[\\\/])\.([^.\\\/]|\.[^\\\/])/.test(path);
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217 | };
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218 |
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219 |
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220 | internals.pathEncode = function (path) {
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221 |
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222 | return encodeURIComponent(path).replace(/%2F/g, '/').replace(/%5C/g, '\\');
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223 | };
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224 |
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225 |
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226 | internals.isNotFound = function (boom) {
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227 |
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228 | return boom.output.statusCode === 404;
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229 | };
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230 |
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231 |
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232 | internals.isDirectory = function (boom) {
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233 |
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234 | return boom.output.statusCode === 403 && boom.data.code === 'EISDIR';
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235 | };
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