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1 | <?php | |
2 | if (version_compare(PHP_VERSION, '8.0.0', '<')) | |
3 | die("This webserver is using PHP version ".PHP_VERSION." but we require at least PHP 8.0.0.<br>". | |
4 | "If you already installed PHP8 but are still seeing this error, then it means ". | |
5 | "apache/nginx/.. is loading an older PHP version. Eg. on Debian/Ubuntu you need ". | |
6 | "<code>apt-get install libapache2-mod-php8.2</code> (or a similar version) and ". | |
7 | "<code>apt-get remove libapache2-mod-php7.4</code> (or a similar version). ". | |
8 | "You may also need to choose again the PHP module to load in apache via <code>a2enmod php8.2</code>"); | |
9 | ||
10 | define('UPATH', dirname(__DIR__)); | |
11 | ||
12 | function get_config($setting) | |
13 | { | |
14 | GLOBAL $config; | |
15 | ||
16 | $item = $config; | |
17 | foreach(explode("::", $setting) as $x) | |
18 | { | |
19 | if (isset($item[$x])) | |
20 | $item = $item[$x]; | |
21 | else | |
22 | return NULL; | |
23 | } | |
24 | return $item; | |
25 | } | |
26 | ||
27 | function page_requires_no_config() | |
28 | { | |
29 | if (str_ends_with($_SERVER['SCRIPT_FILENAME'],"install.php") || | |
30 | str_ends_with($_SERVER['SCRIPT_FILENAME'],"installation.php")) | |
31 | { | |
32 | return TRUE; | |
33 | } | |
34 | return FALSE; | |
35 | } | |
36 | ||
37 | function page_requires_no_login() | |
38 | { | |
39 | if (str_ends_with($_SERVER['SCRIPT_FILENAME'],"login/index.php") || | |
40 | page_requires_no_config()) | |
41 | { | |
42 | return TRUE; | |
43 | } | |
44 | return FALSE; | |
45 | } | |
46 | ||
47 | function read_config_file() | |
48 | { | |
49 | GLOBAL $config; | |
50 | GLOBAL $config_transition_unreal_server; | |
51 | ||
52 | $config = Array(); | |
53 | if (!file_exists(UPATH."/config/config.php") && file_exists(UPATH."/config.php")) | |
54 | { | |
55 | require_once UPATH . "/config.php"; | |
56 | require_once UPATH . "/config/compat.php"; | |
57 | } | |
58 | if ((@include(UPATH . "/config/config.php")) !== 1) | |
59 | return false; | |
60 | if (isset($config['unrealircd'])) | |
61 | $config_transition_unreal_server = true; | |
62 | /* Upgrade needed? */ | |
63 | $plugins_modified = false; | |
64 | foreach ($config["plugins"] as $k=>$v) | |
65 | { | |
66 | if ($v == "sql_auth") | |
67 | { | |
68 | $config["plugins"][$k] = "sql_db"; | |
69 | $plugins_modified = true; | |
70 | } else | |
71 | if ($v == "file_auth") | |
72 | { | |
73 | $config["plugins"][$k] = "file_db"; | |
74 | $plugins_modified = true; | |
75 | } | |
76 | } | |
77 | if ($plugins_modified) | |
78 | write_config_file(); | |
79 | ||
80 | return true; | |
81 | } | |
82 | ||
83 | function read_config_db() | |
84 | { | |
85 | GLOBAL $config; | |
86 | ||
87 | if (page_requires_no_config()) | |
88 | return; | |
89 | ||
90 | $merge = DbSettings::get(); | |
91 | /* DB settings overwrite config.php keys: */ | |
92 | $config = array_merge($config, $merge); | |
93 | } | |
94 | ||
95 | function config_is_file_item($name) | |
96 | { | |
97 | if (($name == "plugins") || | |
98 | ($name == "mysql") || | |
99 | ($name == "base_url") || | |
100 | ($name == "secrets")) | |
101 | { | |
102 | return true; | |
103 | } | |
104 | return false; | |
105 | } | |
106 | ||
107 | function write_config_file() | |
108 | { | |
109 | GLOBAL $config; | |
110 | ||
111 | $file_settings = []; | |
112 | foreach($config as $k=>$v) | |
113 | { | |
114 | if (config_is_file_item($k)) | |
115 | $file_settings[$k] = $v; | |
116 | } | |
117 | ||
118 | $cfg_filename = UPATH.'/config/config.php'; | |
119 | $tmpfile = UPATH.'/config/config.tmp.'.bin2hex(random_bytes(8)).'.php'; | |
120 | $fd = fopen($tmpfile, "w"); | |
121 | if (!$fd) | |
122 | die("Could not write to temporary config file $tmpfile.<br>We need write permissions on the config/ directory!<br>"); | |
123 | ||
124 | $str = var_export($file_settings, true); | |
125 | if ($str === null) | |
126 | die("Error while running write_config_file() -- weird!"); | |
127 | if (!fwrite($fd, "<?php\n". | |
128 | "/* This config file is written automatically by the UnrealIRCd webpanel.\n". | |
129 | " * You are not really supposed to edit it manually.\n". | |
130 | " */\n". | |
131 | '$config = '.$str.";\n")) | |
132 | { | |
133 | die("Error writing to config file $tmpfile (on fwrite).<br>"); | |
134 | } | |
135 | if (!fclose($fd)) | |
136 | die("Error writing to config file $tmpfile (on close).<br>"); | |
137 | /* Now atomically rename the file */ | |
138 | if (!rename($tmpfile, $cfg_filename)) | |
139 | die("Could not write (rename) to file ".$cfg_filename."<br>"); | |
140 | if (function_exists('opcache_invalidate')) | |
141 | opcache_invalidate($cfg_filename); | |
142 | ||
143 | /* Do not re-read config, as it would reinitialize config | |
144 | * without having the DB settings read. (And it also | |
145 | * serves no purpose) | |
146 | */ | |
147 | return true; | |
148 | } | |
149 | ||
150 | // XXX: handle unsetting of config items :D - explicit unset function ? | |
151 | ||
152 | function write_config($setting = null) | |
153 | { | |
154 | GLOBAL $config; | |
155 | ||
156 | /* Specific request? Easy, write only this setting to the DB (never used for file) */ | |
157 | if ($setting !== null) | |
158 | { | |
159 | return DbSettings::set($setting, $config[$setting]); | |
160 | } | |
161 | ||
162 | /* Otherwise write the whole config. | |
163 | * TODO: avoid writing settings file if unneeded, | |
164 | * as it is more noisy than db settings. | |
165 | */ | |
166 | $db_settings = []; | |
167 | ||
168 | foreach($config as $k=>$v) | |
169 | { | |
170 | if (!config_is_file_item($k)) | |
171 | $db_settings[$k] = $v; | |
172 | } | |
173 | ||
174 | if (!write_config_file()) | |
175 | return false; | |
176 | ||
177 | foreach($db_settings as $k=>$v) | |
178 | { | |
179 | $ret = DbSettings::set($k, $v); | |
180 | if (!$ret) | |
181 | return $ret; | |
182 | } | |
183 | ||
184 | return true; | |
185 | } | |
186 | ||
187 | function get_version() | |
188 | { | |
189 | $fd = @fopen(UPATH."/.git/FETCH_HEAD", "r"); | |
190 | if ($fd === false) | |
191 | return "unknown"; | |
192 | $line = fgets($fd, 512); | |
193 | fclose($fd); | |
194 | $commit = substr($line, 0, 8); | |
195 | return $commit; /* short git commit id */ | |
196 | } | |
197 | ||
198 | function generate_secrets() | |
199 | { | |
200 | GLOBAL $config; | |
201 | ||
202 | if (!isset($config['secrets'])) | |
203 | $config['secrets'] = Array(); | |
204 | ||
205 | if (!isset($config['secrets']['pepper'])) | |
206 | $config['secrets']['pepper'] = rtrim(base64_encode(random_bytes(16)),'='); | |
207 | ||
208 | if (!isset($config['secrets']['key'])) | |
209 | $config['secrets']['key'] = rtrim(base64_encode(sodium_crypto_aead_xchacha20poly1305_ietf_keygen()),'='); | |
210 | } | |
211 | ||
212 | function secret_encrypt(string $text) | |
213 | { | |
214 | GLOBAL $config; | |
215 | ||
216 | $key = base64_decode($config['secrets']['key']); | |
217 | $nonce = \random_bytes(\SODIUM_CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES); | |
218 | $encrypted_text = sodium_crypto_aead_xchacha20poly1305_ietf_encrypt($text, '', $nonce, $key); | |
219 | return "secret:".rtrim(base64_encode($nonce),'=').':'.rtrim(base64_encode($encrypted_text),'='); // secret:base64(NONCE):base64(ENCRYPTEDTEXT) | |
220 | } | |
221 | ||
222 | function secret_decrypt(string $crypted) | |
223 | { | |
224 | GLOBAL $config; | |
225 | ||
226 | $key = base64_decode($config['secrets']['key']); | |
227 | $d = explode(":", $crypted); | |
228 | if (count($d) != 3) | |
229 | return null; | |
230 | $nonce = base64_decode($d[1]); | |
231 | $ciphertext = base64_decode($d[2]); | |
232 | ||
233 | $ret = sodium_crypto_aead_xchacha20poly1305_ietf_decrypt($ciphertext, '', $nonce, $key); | |
234 | if ($ret === false) | |
235 | return null; | |
236 | return $ret; | |
237 | } | |
238 | ||
239 | function upgrade_check() | |
240 | { | |
241 | GLOBAL $config_transition_unreal_server; | |
242 | GLOBAL $config; | |
243 | ||
244 | /* Moving of a config.php item to DB: */ | |
245 | if ($config_transition_unreal_server) | |
246 | write_config(); | |
247 | ||
248 | /* Our own stuff may need upgrading.. */ | |
249 | /* - generating secrets */ | |
250 | if (!isset($config['secrets'])) | |
251 | { | |
252 | generate_secrets(); | |
253 | write_config_file(); | |
254 | } | |
255 | /* - encrypting rpc_password */ | |
256 | if (isset($config['unrealircd']) && | |
257 | isset($config['unrealircd']['rpc_password']) && | |
258 | !str_starts_with($config['unrealircd']['rpc_password'], "secret:")) | |
259 | { | |
260 | $ret = secret_encrypt($config['unrealircd']['rpc_password']); | |
261 | if ($ret !== false) | |
262 | { | |
263 | $config['unrealircd']['rpc_password'] = $ret; | |
264 | write_config('unrealircd'); | |
265 | } | |
266 | } | |
267 | /* $config["unrealircd"] should be an array now.. */ | |
268 | if (isset($config['unrealircd']) && isset($config['unrealircd']['rpc_password'])) | |
269 | { | |
270 | $config["unrealircd"]["default"] = true; | |
271 | $config['unrealircd'] = [ | |
272 | "Primary" => $config['unrealircd']]; | |
273 | write_config("unrealircd"); | |
274 | } | |
275 | ||
276 | $version = get_version(); | |
277 | if (!isset($config['webpanel_version'])) | |
278 | $config['webpanel_version'] = ''; | |
279 | if ($version != $config['webpanel_version']) | |
280 | { | |
281 | $versioninfo = [ | |
282 | "old_version" => $config['webpanel_version'], | |
283 | "new_version" => $version | |
284 | ]; | |
285 | /* And inform the hook (eg the database backends) */ | |
286 | Hook::run(HOOKTYPE_UPGRADE, $versioninfo); | |
287 | /* And set the new version now that the upgrade is "done" */ | |
288 | $config['webpanel_version'] = $version; | |
289 | write_config("webpanel_version"); | |
290 | } | |
291 | } | |
292 | ||
293 | function panel_start_session($user = false) | |
294 | { | |
295 | if (!isset($_SESSION)) | |
296 | { | |
297 | session_set_cookie_params(86400); // can't set this to session_timeout due to catch-22 | |
298 | session_start(); | |
299 | } | |
300 | ||
301 | if ($user === false) | |
302 | { | |
303 | $user = unreal_get_current_user(); | |
304 | if ($user === false) | |
305 | return false; | |
306 | } | |
307 | ||
308 | $timeout = 3600; | |
309 | if (isset($user->user_meta['session_timeout'])) | |
310 | $timeout = (INT)$user->user_meta['session_timeout']; | |
311 | ||
312 | if (!isset($_SESSION['session_timeout'])) | |
313 | $_SESSION['session_timeout'] = $timeout; | |
314 | ||
315 | $_SESSION['last-activity'] = time(); | |
316 | return true; | |
317 | } | |
318 | ||
319 | /* Now read the config, and redirect to install screen if we don't have it */ | |
320 | $config_transition_unreal_server = false; | |
321 | if (!read_config_file()) | |
322 | { | |
323 | if (page_requires_no_config()) | |
324 | { | |
325 | /* Allow empty conf */ | |
326 | } else | |
327 | if (!file_exists(UPATH."/config/config.php") && !file_exists(UPATH."/config.php")) | |
328 | { | |
329 | header("Location: settings/install.php"); | |
330 | die(); | |
331 | } | |
332 | } | |
333 | ||
334 | require_once UPATH . "/Classes/class-hook.php"; | |
335 | if (!is_dir(UPATH . "/vendor")) | |
336 | die("The vendor/ directory is missing. Most likely the admin forgot to run 'composer install'\n"); | |
337 | require_once UPATH . '/vendor/autoload.php'; | |
338 | require_once UPATH . "/Classes/class-cmodes.php"; | |
339 | require_once UPATH . "/inc/defines.php"; | |
340 | require_once UPATH . "/misc/strings.php"; | |
341 | require_once UPATH . "/misc/channel-lookup-misc.php"; | |
342 | require_once UPATH . "/misc/user-lookup-misc.php"; | |
343 | require_once UPATH . "/misc/server-lookup-misc.php"; | |
344 | require_once UPATH . "/misc/ip-whois-misc.php"; | |
345 | require_once UPATH . "/Classes/class-log.php"; | |
346 | require_once UPATH . "/Classes/class-message.php"; | |
347 | require_once UPATH . "/Classes/class-rpc.php"; | |
348 | require_once UPATH . "/Classes/class-paneluser.php"; | |
349 | require_once UPATH . "/plugins.php"; | |
350 | ||
351 | /* Do various checks and reading, except during setup step 1. */ | |
352 | if (!page_requires_no_config()) | |
353 | { | |
354 | /* Now that plugins are loaded, read config from DB */ | |
355 | read_config_db(); | |
356 | ||
357 | /* Check if anything needs upgrading (eg on panel version change) */ | |
358 | upgrade_check(); | |
359 | ||
360 | /* And a check... */ | |
361 | if (!get_config("base_url")) | |
362 | die("The base_url was not found in your config. Setup went wrong?"); | |
363 | } | |
364 | ||
365 | $pages = [ | |
366 | "Overview" => "", | |
367 | "Users" => "users", | |
368 | "Channels" => "channels", | |
369 | "Servers" => "servers", | |
370 | "Server Bans" => [ | |
371 | "Server Bans" => "server-bans", | |
372 | "Name Bans" => "server-bans/name-bans.php", | |
373 | "Ban Exceptions" => "server-bans/ban-exceptions.php" | |
374 | ], | |
375 | "Spamfilter" => "spamfilter.php", | |
376 | "Tools" => [ | |
377 | "IP WHOIS" => "tools/ip-whois.php", | |
378 | ], | |
379 | "Settings" => [ | |
380 | "Plugins" => "settings/plugins.php", | |
381 | "RPC Servers" => "settings/rpc-servers.php", | |
382 | ], | |
383 | ||
384 | "News" => "news.php", | |
385 | ]; | |
386 | ||
387 | if (!panel_start_session()) | |
388 | { | |
389 | if (!page_requires_no_login()) | |
390 | { | |
391 | if (!is_auth_provided()) | |
392 | die("No authentication plugin loaded. You must load either sql_db, file_db, or a similar auth plugin!"); | |
393 | $current_page = $_SERVER['REQUEST_URI']; | |
394 | header("Location: ".get_config("base_url")."login/?redirect=".urlencode($current_page)); | |
395 | die; | |
396 | } | |
397 | } else { | |
398 | $pages["Settings"]["Accounts"] = "settings"; | |
399 | if (current_user_can(PERMISSION_MANAGE_USERS)) | |
400 | $pages["Settings"]["Role Editor"] = "settings/user-role-edit.php"; | |
401 | $user = unreal_get_current_user(); | |
402 | if ($user) | |
403 | { | |
404 | /* Add logout page, if logged in */ | |
405 | $pages["Logout"] = "login/?logout=true"; | |
406 | } | |
407 | } | |
408 | ||
409 | Hook::run(HOOKTYPE_NAVBAR, $pages); | |
410 | ||
411 | /* Example to add new menu item: | |
412 | * | |
413 | * class MyPlugin | |
414 | * { | |
415 | * | |
416 | * function __construct() | |
417 | * { | |
418 | * Hook::func(HOOKTYPE_NAVBAR, [$this, 'add_menu']) | |
419 | * } | |
420 | * | |
421 | * function add_menu(&$pages) // this should pass by reference (using the & prefix) | |
422 | * { | |
423 | * $page_name = "My New Page"; | |
424 | * $page_link = "link/to/page.php"; | |
425 | * $pages[$page_name] = $page_link; | |
426 | * } | |
427 | * } | |
428 | */ |