forked from haraka/Haraka
-
Notifications
You must be signed in to change notification settings - Fork 0
/
configfile.js
407 lines (371 loc) · 13.3 KB
/
configfile.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
'use strict';
// Config file loader
var path = require('path');
var platform = process.platform;
// for "ini" type files
var regex = {
section: /^\s*\[\s*([^\]]*?)\s*\]\s*$/,
param: /^\s*([\w@\._-]+)\s*=\s*(.*?)\s*$/,
comment: /^\s*[;#].*$/,
line: /^\s*(.*?)\s*$/,
blank: /^\s*$/,
continuation: /\\[ \t]*$/,
is_integer: /^-?\d+$/,
is_float: /^-?\d+\.\d+$/,
is_truth: /^(?:true|yes|ok|enabled|on|1)$/i,
};
var cfreader = exports;
cfreader.config_path = process.env.HARAKA
? path.join(process.env.HARAKA, 'config')
: path.join(__dirname, './config');
cfreader.watch_files = true;
cfreader._config_cache = {};
cfreader._read_args = {};
cfreader._watchers = {};
cfreader._enoent_timer = false;
cfreader._enoent_files = {};
cfreader.on_watch_event = function (name, type, options, cb) {
return function (fse, filename) {
logger.loginfo('Detected ' + fse + ', reloading ' + name);
cfreader.load_config(name, type, options);
if (typeof cb === 'function') cb();
if (fse !== 'rename') return;
// https://github.com/joyent/node/issues/2062
// On a rename event, we'll need to re-watch the file
cfreader._watchers[name].close();
try {
cfreader._watchers[name] = fs.watch(name,
{ persistent: false },
cfreader.on_watch_event(name, type, options, cb));
}
catch (e) {
if (e.code === 'ENOENT') {
cfreader._enoent_files[name] = true;
cfreader.ensure_enoent_timer();
}
else {
logger.logerror('Error watching file: ' + name + ' : ' + e);
}
}
}
}
cfreader.watch_dir = function () {
// NOTE: This only works on Linux and Windows
if (cfreader._watchers[cfreader.config_path]) return;
try {
cfreader._watchers[cfreader.config_path] = fs.watch(cfreader.config_path,
{ persistent: false },
function (fse, filename)
{
if (!filename) return;
var full_path = path.join(cfreader.config_path, filename);
//logger.loginfo('event=' + fse +
// ' filename=' + filename +
// ' in_read_args=' + ((cfreader._read_args[full_path]) ? true : false));
if (!cfreader._read_args[full_path]) return;
var args = cfreader._read_args[full_path];
if (args.options && args.options.no_watch) return;
logger.loginfo('Detected ' + fse + ', reloading ' + filename);
cfreader.load_config(full_path, args.type, args.options);
if (typeof args.cb === 'function') args.cb();
});
}
catch (e) {
logger.logerror('Error watching directory ' + cfreader.config_path + '(' + e + ')');
}
return;
}
cfreader.watch_file = function (name, type, cb, options) {
// This works on all OS's, but watch_dir() above is preferred for Linux and
// Windows as it is far more efficient.
// NOTE: we have to have an fs.watch per file and it isn't possible to watch
// a file that doesn't exist yet, so we have to note which files we attempted
// to watch that returned ENOENT and then fs.stat each of them periodically
if (cfreader._watchers[name] || (options && options.no_watch)) return;
try {
cfreader._watchers[name] = fs.watch(name, {persistent: false},
cfreader.on_watch_event(name, type, options, cb));
}
catch (e) {
if (e.code != 'ENOENT') { // ignore error when ENOENT
logger.logerror('Error watching config file: ' + name + ' : ' + e);
}
else {
cfreader._enoent_files[name] = true;
cfreader.ensure_enoent_timer();
}
}
return;
}
cfreader.read_config = function(name, type, cb, options) {
// Store arguments used so we can re-use them by filename later
// and so we know which files we've attempted to read so that
// we can ignore any other files written to the same directory.
cfreader._read_args[name] = {
type: type,
cb: cb,
options: options
}
// Check cache first
if (name in cfreader._config_cache) {
//logger.logdebug('Returning cached file: ' + name);
return cfreader._config_cache[name];
}
// load config file
var result = cfreader.load_config(name, type, options);
if (!cfreader.watch_files) return result;
// We can watch the directory on these platforms which
// allows us to notice when files are newly created.
if (platform === 'linux' || platform === 'win32') {
cfreader.watch_dir();
}
else {
// All other operating systems
cfreader.watch_file(name, type, cb, options);
}
return result;
};
cfreader.ensure_enoent_timer = function () {
if (cfreader._enoent_timer) return;
// Create timer
cfreader._enoent_timer = setInterval(function () {
var files = Object.keys(cfreader._enoent_files);
for (var i=0; i<files.length; i++) {
var file = files[i];
/* BLOCK SCOPE */
(function (file) {
fs.stat(file, function (err) {
if (err) return;
// File now exists
delete(cfreader._enoent_files[file]);
var args = cfreader._read_args[file];
cfreader.load_config(file, args.type, args.options, args.cb);
cfreader._watchers[file] = fs.watch(file, {persistent: false},
cfreader.on_watch_event(file, args.type, args.options, args.cb));
});
})(file); // END BLOCK SCOPE
}
}, 60 * 1000);
}
cfreader.empty_config = function(type) {
if (type === 'ini') {
return { main: {} };
}
else if (type === 'json') {
return {};
}
else {
return [];
}
};
cfreader.load_config = function(name, type, options) {
var result;
if (type === 'ini' || /\.ini$/.test(name)) {
result = cfreader.load_ini_config(name, options);
}
else if (type === 'json' || /\.json$/.test(name)) {
result = cfreader.load_json_config(name);
}
else if (type === 'binary') {
result = cfreader.load_binary_config(name, type);
}
else {
result = cfreader.load_flat_config(name, type, options);
if (result && type !== 'list' && type !== 'data') {
result = result[0];
if (options && Array.isArray(options.booleans) && options.booleans.indexOf(result) === -1) {
result = regex.is_truth.test(result);
}
else if (regex.is_integer.test(result)) {
result = parseInt(result, 10);
}
else if (regex.is_float.test(result)) {
result = parseFloat(result);
}
}
}
if (!options || !options.no_cache) {
cfreader._config_cache[name] = result;
}
return result;
};
cfreader.load_json_config = function(name) {
var result = cfreader.empty_config('json');
try {
if (utils.existsSync(name)) {
result = JSON.parse(fs.readFileSync(name));
}
}
catch (err) {
if (err.code === 'EBADF') {
if (cfreader._config_cache[name]) {
return cfreader._config_cache[name];
}
}
else {
throw err;
}
}
return result;
};
cfreader.load_ini_config = function(name, options) {
var result = cfreader.empty_config('ini');
var current_sect = result.main;
var current_sect_name = 'main';
var bool_matches = [];
if (options && options.booleans) bool_matches = options.booleans.slice();
// Initialize any booleans
if (options && Array.isArray(options.booleans)) {
for (var i=0; i<options.booleans.length; i++) {
var m = /^(?:([^\. ]+)\.)?(.+)/.exec(options.booleans[i]);
if (!m) continue;
var section = m[1] || 'main';
var key = m[2];
var bool_default = section[0] === '+' ? true
: key[0] === '+' ? true
: false;
if (section.match(/^(\-|\+)/)) section = section.substr(1);
if ( key.match(/^(\-|\+)/)) key = key.substr(1);
// so the boolean detection in the next section will match
if (options.booleans.indexOf(section+'.'+key) === -1) {
bool_matches.push(section+'.'+key);
}
if (!result[section]) result[section] = {};
result[section][key] = bool_default;
}
}
try {
if (utils.existsSync(name)) {
var data = fs.readFileSync(name, 'UTF-8');
var lines = data.split(/\r\n|\r|\n/);
var match;
var pre = '';
lines.forEach(function(line) {
if (regex.comment.test(line)) {
return;
}
if (regex.blank.test(line)) {
return;
}
match = regex.section.exec(line);
if (match) {
if (!result[match[1]]) result[match[1]] = {};
current_sect = result[match[1]];
current_sect_name = match[1];
return;
}
else if (regex.continuation.test(line)) {
pre += line.replace(regex.continuation, '');
return;
}
line = pre + line;
pre = '';
match = regex.param.exec(line);
if (match) {
if (options && Array.isArray(options.booleans) &&
bool_matches.indexOf(current_sect_name + '.' + match[1]) !== -1)
{
current_sect[match[1]] = regex.is_truth.test(match[2]);
logger.logdebug('Returning boolean ' + current_sect[match[1]] +
' for ' + current_sect_name + '.' + match[1] + '=' + match[2]);
}
else if (regex.is_integer.test(match[2])) {
current_sect[match[1]] = parseInt(match[2], 10);
}
else if (regex.is_float.test(match[2])) {
current_sect[match[1]] = parseFloat(match[2]);
}
else {
current_sect[match[1]] = match[2];
}
return;
}
logger.logerror('Invalid line in config file \'' + name + '\': ' + line);
});
}
}
catch (err) {
if (err.code === 'EBADF') {
if (cfreader._config_cache[name]) {
return cfreader._config_cache[name];
}
}
else {
throw err;
}
}
return result;
};
cfreader.load_flat_config = function(name, type) {
var result = cfreader.empty_config();
try {
if (utils.existsSync(name)) {
var data = fs.readFileSync(name, "UTF-8");
if (type === 'data') {
while (data.length > 0) {
var match = data.match(/^([^\n]*)\n?/);
result.push(match[1]);
data = data.slice(match[0].length);
}
return result;
}
var lines = data.split(/\r\n|\r|\n/);
lines.forEach( function(line) {
var line_data;
if (regex.comment.test(line)) {
return;
}
if (regex.blank.test(line)) {
return;
}
line_data = regex.line.exec(line);
if (line_data) {
result.push(line_data[1].trim());
}
});
}
}
catch (err) {
if (err.code === 'EBADF') {
if (cfreader._config_cache[name]) {
return cfreader._config_cache[name];
}
}
else {
throw err;
}
}
// Return hostname for 'me' if no result
if (/\/me$/.test(name) && !(result && result.length)) {
return [ require('os').hostname() ];
}
// For value types with no result
if (!(type && (type === 'list' || type === 'data'))) {
if (!(result && result.length)) {
return null;
}
}
return result;
};
cfreader.load_binary_config = function(name, type) {
var result = cfreader.empty_config();
try {
if (utils.existsSync(name)) {
return fs.readFileSync(name);
}
return null;
}
catch (err) {
if (err.code === 'EBADF') {
if (cfreader._config_cache[name]) {
return cfreader._config_cache[name];
}
}
else {
throw err;
}
}
};
var fs = require('fs');
var utils = require('./utils');
var logger = require('./logger');