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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\ban; |
| 15 | |
| 16 | use phpbb\ban\exception\invalid_length_exception; |
| 17 | use phpbb\ban\exception\type_not_found_exception; |
| 18 | use phpbb\ban\type\type_interface; |
| 19 | use phpbb\cache\driver\driver_interface as cache_driver; |
| 20 | use phpbb\db\driver\driver_interface; |
| 21 | use phpbb\di\service_collection; |
| 22 | use phpbb\language\language; |
| 23 | use phpbb\log\log_interface; |
| 24 | use phpbb\user; |
| 25 | |
| 26 | class manager |
| 27 | { |
| 28 | const CACHE_KEY_INFO = '_ban_info'; |
| 29 | const CACHE_KEY_USERS = '_banned_users'; |
| 30 | const CACHE_TTL = 3600; |
| 31 | |
| 32 | /** @var string */ |
| 33 | protected $bans_table; |
| 34 | |
| 35 | /** @var cache_driver */ |
| 36 | protected $cache; |
| 37 | |
| 38 | /** @var driver_interface */ |
| 39 | protected $db; |
| 40 | |
| 41 | /** @var service_collection */ |
| 42 | protected $types; |
| 43 | |
| 44 | /** @var language */ |
| 45 | protected $language; |
| 46 | |
| 47 | /** @var log_interface */ |
| 48 | protected $log; |
| 49 | |
| 50 | /** @var user */ |
| 51 | protected $user; |
| 52 | |
| 53 | /** @var string */ |
| 54 | protected $users_table; |
| 55 | |
| 56 | /** |
| 57 | * Creates a service which manages all bans. Developers can |
| 58 | * create their own ban types which will be handled in this. |
| 59 | * |
| 60 | * @param service_collection $types A service collection containing all ban types |
| 61 | * @param cache_driver $cache A cache object |
| 62 | * @param driver_interface $db A phpBB DBAL object |
| 63 | * @param language $language Language object |
| 64 | * @param log_interface $log Log object |
| 65 | * @param user $user User object |
| 66 | * @param string $bans_table The bans table |
| 67 | * @param string $users_table The users table |
| 68 | */ |
| 69 | public function __construct(service_collection $types, cache_driver $cache, driver_interface $db, language $language, |
| 70 | log_interface $log, user $user, string $bans_table, string $users_table = '') |
| 71 | { |
| 72 | $this->bans_table = $bans_table; |
| 73 | $this->cache = $cache; |
| 74 | $this->db = $db; |
| 75 | $this->types = $types; |
| 76 | $this->language = $language; |
| 77 | $this->log = $log; |
| 78 | $this->user = $user; |
| 79 | $this->users_table = $users_table; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Creates ban entries for the given $items. Returns true if successful |
| 84 | * and false if no entries were added to the database |
| 85 | * |
| 86 | * @param string $mode A string which identifies a ban type |
| 87 | * @param array $items An array of items which should be banned |
| 88 | * @param \DateTimeInterface $start A DateTimeInterface object which is the start of the ban |
| 89 | * @param \DateTimeInterface $end A DateTimeInterface object which is the end of the ban (or 0 if permanent) |
| 90 | * @param string $reason An (internal) reason for the ban |
| 91 | * @param string $display_reason An optional reason which should be displayed to the banned |
| 92 | * |
| 93 | * @return bool |
| 94 | */ |
| 95 | public function ban(string $mode, array $items, \DateTimeInterface $start, \DateTimeInterface $end, string $reason, string $display_reason = ''): bool |
| 96 | { |
| 97 | if ($start > $end && $end->getTimestamp() !== 0) |
| 98 | { |
| 99 | throw new invalid_length_exception('LENGTH_BAN_INVALID'); |
| 100 | } |
| 101 | |
| 102 | /** @var type_interface $ban_mode */ |
| 103 | $ban_mode = $this->find_type($mode); |
| 104 | if ($ban_mode === false) |
| 105 | { |
| 106 | throw new type_not_found_exception(); |
| 107 | } |
| 108 | |
| 109 | if (!empty($this->user)) |
| 110 | { |
| 111 | $ban_mode->set_user($this->user); |
| 112 | } |
| 113 | $this->tidy(); |
| 114 | |
| 115 | $ban_items = $ban_mode->prepare_for_storage($items); |
| 116 | |
| 117 | // Prevent duplicate bans |
| 118 | $sql = 'DELETE FROM ' . $this->bans_table . " |
| 119 | WHERE ban_mode = '" . $this->db->sql_escape($mode) . "' |
| 120 | AND " . $this->db->sql_in_set('ban_item', $ban_items, false, true); |
| 121 | $this->db->sql_query($sql); |
| 122 | |
| 123 | $insert_array = []; |
| 124 | foreach ($ban_items as $ban_item) |
| 125 | { |
| 126 | $insert_array[] = [ |
| 127 | 'ban_mode' => $mode, |
| 128 | 'ban_item' => $ban_item, |
| 129 | 'ban_userid' => $mode === 'user' ? $ban_item : 0, |
| 130 | 'ban_start' => $start->getTimestamp(), |
| 131 | 'ban_end' => $end->getTimestamp(), |
| 132 | 'ban_reason' => $reason, |
| 133 | 'ban_reason_display' => $display_reason, |
| 134 | ]; |
| 135 | } |
| 136 | |
| 137 | if (empty($insert_array)) |
| 138 | { |
| 139 | return false; |
| 140 | } |
| 141 | |
| 142 | $this->db->sql_multi_insert($this->bans_table, $insert_array); |
| 143 | |
| 144 | $ban_data = [ |
| 145 | 'items' => $ban_items, |
| 146 | 'start' => $start, |
| 147 | 'end' => $end, |
| 148 | 'reason' => $reason, |
| 149 | 'display_reason' => $display_reason, |
| 150 | ]; |
| 151 | |
| 152 | // Add to admin log, moderator log and user notes |
| 153 | $ban_list_log = implode(', ', $items); |
| 154 | |
| 155 | $log_operation = 'LOG_BAN_' . strtoupper($mode); |
| 156 | $this->log->add('admin', $this->user->data['user_id'], $this->user->ip, $log_operation, false, [$reason, $ban_list_log]); |
| 157 | $this->log->add('mod', $this->user->data['user_id'], $this->user->ip, $log_operation, false, [ |
| 158 | 'forum_id' => 0, |
| 159 | 'topic_id' => 0, |
| 160 | $reason, |
| 161 | $ban_list_log |
| 162 | ]); |
| 163 | |
| 164 | if ($banlist_ary = $ban_mode->after_ban($ban_data)) |
| 165 | { |
| 166 | foreach ($banlist_ary as $user_id) |
| 167 | { |
| 168 | $this->log->add('user', $this->user->data['user_id'], $this->user->ip, $log_operation, false, [ |
| 169 | 'reportee_id' => $user_id, |
| 170 | $reason, |
| 171 | $ban_list_log |
| 172 | ]); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | $this->cache->destroy(self::CACHE_KEY_INFO); |
| 177 | $this->cache->destroy(self::CACHE_KEY_USERS); |
| 178 | |
| 179 | return true; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Removes ban entries from the database with the given IDs |
| 184 | * |
| 185 | * @param string $mode The ban type in which the ban IDs were created |
| 186 | * @param array $items An array of ban IDs which should be removed |
| 187 | */ |
| 188 | public function unban(string $mode, array $items) |
| 189 | { |
| 190 | /** @var type_interface $ban_mode */ |
| 191 | $ban_mode = $this->find_type($mode); |
| 192 | if ($ban_mode === false) |
| 193 | { |
| 194 | throw new type_not_found_exception(); |
| 195 | } |
| 196 | $this->tidy(); |
| 197 | |
| 198 | $sql_ids = array_map('intval', $items); |
| 199 | |
| 200 | if (count($sql_ids)) |
| 201 | { |
| 202 | $sql = 'SELECT ban_item |
| 203 | FROM ' . $this->bans_table . ' |
| 204 | WHERE ' . $this->db->sql_in_set('ban_id', $sql_ids); |
| 205 | $result = $this->db->sql_query($sql); |
| 206 | |
| 207 | $unbanned_items = []; |
| 208 | while ($row = $this->db->sql_fetchrow($result)) |
| 209 | { |
| 210 | $unbanned_items[] = $row['ban_item']; |
| 211 | } |
| 212 | $this->db->sql_freeresult($result); |
| 213 | |
| 214 | $sql = 'DELETE FROM ' . $this->bans_table . ' |
| 215 | WHERE ' . $this->db->sql_in_set('ban_id', $sql_ids); |
| 216 | $this->db->sql_query($sql); |
| 217 | |
| 218 | $unban_data = [ |
| 219 | 'items' => $unbanned_items, |
| 220 | ]; |
| 221 | $unbanned_users = $ban_mode->after_unban($unban_data); |
| 222 | |
| 223 | // Add to moderator log, admin log and user notes |
| 224 | $log_operation = 'LOG_UNBAN_' . strtoupper($mode); |
| 225 | $this->log->add('admin', $this->user->data['user_id'], $this->user->ip, $log_operation, false, [$unbanned_users]); |
| 226 | $this->log->add('mod', $this->user->data['user_id'], $this->user->ip, $log_operation, false, [ |
| 227 | 'forum_id' => 0, |
| 228 | 'topic_id' => 0, |
| 229 | $unbanned_users |
| 230 | ]); |
| 231 | if (count($unbanned_users)) |
| 232 | { |
| 233 | foreach ($unbanned_users as $user_id) |
| 234 | { |
| 235 | $this->log->add('user', $this->user->data['user_id'], $this->user->ip, $log_operation, false, array( |
| 236 | 'reportee_id' => $user_id, |
| 237 | $unbanned_users |
| 238 | )); |
| 239 | } |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | $this->cache->destroy(self::CACHE_KEY_INFO); |
| 244 | $this->cache->destroy(self::CACHE_KEY_USERS); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Checks for the given user data whether the user is banned. |
| 249 | * Returns false if nothing was found and an array containing |
| 250 | * 'mode', 'end', 'reason' and 'item' otherwise. |
| 251 | * |
| 252 | * @param array $user_data The array containing the user data |
| 253 | * |
| 254 | * @return array|bool |
| 255 | */ |
| 256 | public function check(array $user_data = []) |
| 257 | { |
| 258 | if (empty($user_data)) |
| 259 | { |
| 260 | $user_data = $this->user->data; |
| 261 | } |
| 262 | |
| 263 | $ban_info = $this->get_info_cache(); |
| 264 | |
| 265 | foreach ($ban_info as $mode => $ban_rows) |
| 266 | { |
| 267 | /** @var type_interface $ban_mode */ |
| 268 | $ban_mode = $this->find_type($mode); |
| 269 | if ($ban_mode === false) |
| 270 | { |
| 271 | continue; |
| 272 | } |
| 273 | |
| 274 | if ($ban_mode->get_user_column() === null) |
| 275 | { |
| 276 | $ban_result = $ban_mode->check($ban_rows, $user_data); |
| 277 | if ($ban_result !== false) |
| 278 | { |
| 279 | return $ban_result + ['mode' => $mode]; |
| 280 | } |
| 281 | } |
| 282 | else |
| 283 | { |
| 284 | $user_column = $ban_mode->get_user_column(); |
| 285 | if (!isset($user_data[$user_column])) |
| 286 | { |
| 287 | continue; |
| 288 | } |
| 289 | |
| 290 | foreach ($ban_rows as $ban_row) |
| 291 | { |
| 292 | if (!$ban_row['end'] || $ban_row['end'] > time()) |
| 293 | { |
| 294 | if (stripos($ban_row['item'], '*') === false) |
| 295 | { |
| 296 | if ($ban_row['item'] == $user_data[$user_column]) |
| 297 | { |
| 298 | return $ban_row + ['mode' => $mode]; |
| 299 | } |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | $regex = '#^' . str_replace('\*', '.*?', preg_quote($ban_row['item'], '#')) . '$#i'; |
| 304 | if (preg_match($regex, $user_data[$user_column])) |
| 305 | { |
| 306 | return $ban_row + ['mode' => $mode]; |
| 307 | } |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | return false; |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Returns all bans for a given ban type. False, if none were found |
| 319 | * |
| 320 | * @param string $mode The ban type for which the entries should be retrieved |
| 321 | * |
| 322 | * @return array|bool |
| 323 | */ |
| 324 | public function get_bans(string $mode) |
| 325 | { |
| 326 | /** @var type_interface $ban_type */ |
| 327 | $ban_type = $this->find_type($mode); |
| 328 | if ($ban_type === false) |
| 329 | { |
| 330 | throw new type_not_found_exception(); |
| 331 | } |
| 332 | $this->tidy(); |
| 333 | |
| 334 | return $ban_type->get_ban_options(); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Returns an array of banned users with 'id' => 'end' values. |
| 339 | * The result is cached for performance reasons and is not as |
| 340 | * accurate as the check() method. (Wildcards aren't considered e.g.) |
| 341 | * |
| 342 | * @return array |
| 343 | */ |
| 344 | public function get_banned_users(): array |
| 345 | { |
| 346 | $banned_users = $this->cache->get(self::CACHE_KEY_USERS); |
| 347 | if ($banned_users === false) |
| 348 | { |
| 349 | $manual_modes = []; |
| 350 | $where_array = []; |
| 351 | |
| 352 | /** @var type_interface $ban_mode */ |
| 353 | foreach ($this->types as $ban_mode) |
| 354 | { |
| 355 | $user_column = $ban_mode->get_user_column(); |
| 356 | if (empty($user_column)) |
| 357 | { |
| 358 | $manual_modes[] = $ban_mode; |
| 359 | continue; |
| 360 | } |
| 361 | |
| 362 | $where_column = $user_column == 'user_id' ? 'b.ban_userid' : 'b.ban_item'; |
| 363 | |
| 364 | $where_array[] = ['AND', |
| 365 | [ |
| 366 | [$where_column, '=', 'u.' . $user_column], |
| 367 | ['b.ban_mode', '=', "'{$ban_mode->get_type()}'"], |
| 368 | ], |
| 369 | ]; |
| 370 | } |
| 371 | |
| 372 | $sql_array = [ |
| 373 | 'SELECT' => 'u.user_id, b.ban_end', |
| 374 | 'FROM' => [ |
| 375 | $this->bans_table => 'b', |
| 376 | $this->users_table => 'u', |
| 377 | ], |
| 378 | 'WHERE' => ['AND', |
| 379 | [ |
| 380 | ['OR', |
| 381 | $where_array, |
| 382 | ], |
| 383 | ['u.user_type', '<>', USER_FOUNDER], |
| 384 | ], |
| 385 | ], |
| 386 | ]; |
| 387 | $sql = $this->db->sql_build_query('SELECT', $sql_array); |
| 388 | $result = $this->db->sql_query($sql); |
| 389 | |
| 390 | $banned_users = []; |
| 391 | while ($row = $this->db->sql_fetchrow($result)) |
| 392 | { |
| 393 | $user_id = (int) $row['user_id']; |
| 394 | $end = (int) $row['ban_end']; |
| 395 | if (!isset($banned_users[$user_id]) || ($banned_users[$user_id] > 0 && $banned_users[$user_id] < $end)) |
| 396 | { |
| 397 | $banned_users[$user_id] = $end; |
| 398 | } |
| 399 | } |
| 400 | $this->db->sql_freeresult($result); |
| 401 | |
| 402 | /** @var type_interface $manual_mode */ |
| 403 | foreach ($manual_modes as $manual_mode) |
| 404 | { |
| 405 | $mode_banned_users = $manual_mode->get_banned_users(); |
| 406 | foreach ($mode_banned_users as $user_id => $end) |
| 407 | { |
| 408 | $user_id = (int) $user_id; |
| 409 | $end = (int) $end; |
| 410 | if (!isset($banned_users[$user_id]) || ($banned_users[$user_id] > 0 && $banned_users[$user_id] < $end)) |
| 411 | { |
| 412 | $banned_users[$user_id] = $end; |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | $this->cache->put(self::CACHE_KEY_USERS, $banned_users, self::CACHE_TTL); |
| 418 | } |
| 419 | |
| 420 | return $banned_users; |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * Get ban end |
| 425 | * |
| 426 | * @param \DateTimeInterface $ban_start Ban start time |
| 427 | * @param int $length Ban length in minutes |
| 428 | * @param string $end_date Ban end date as YYYY-MM-DD string |
| 429 | * @return \DateTimeInterface Ban end as DateTimeInterface instance |
| 430 | */ |
| 431 | public function get_ban_end(\DateTimeInterface $ban_start, int $length, string $end_date): \DateTimeInterface |
| 432 | { |
| 433 | $current_time = $ban_start->getTimestamp(); |
| 434 | $end_time = 0; |
| 435 | |
| 436 | if ($length) |
| 437 | { |
| 438 | if ($length != -1 || !$end_date) |
| 439 | { |
| 440 | $end_time = max($current_time, $current_time + ($length) * 60); |
| 441 | } |
| 442 | else |
| 443 | { |
| 444 | if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $end_date)) |
| 445 | { |
| 446 | $end_time = max( |
| 447 | $current_time, |
| 448 | \DateTime::createFromFormat('Y-m-d', $end_date, $this->user->timezone)->getTimestamp() |
| 449 | ); |
| 450 | } |
| 451 | else |
| 452 | { |
| 453 | throw new invalid_length_exception('LENGTH_BAN_INVALID'); |
| 454 | } |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | $ban_end = new \DateTime(); |
| 459 | $ban_end->setTimestamp($end_time); |
| 460 | |
| 461 | return $ban_end; |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Cleans up the database of e.g. stale bans |
| 466 | */ |
| 467 | public function tidy() |
| 468 | { |
| 469 | // Delete stale bans |
| 470 | $sql = 'DELETE FROM ' . $this->bans_table . ' |
| 471 | WHERE ban_end > 0 |
| 472 | AND ban_end < ' . (int) time(); |
| 473 | $this->db->sql_query($sql); |
| 474 | |
| 475 | /** @var type_interface $type */ |
| 476 | foreach ($this->types as $type) |
| 477 | { |
| 478 | $type->tidy(); |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * Finds the ban type for the given mode string. |
| 484 | * Returns false if none was found |
| 485 | * |
| 486 | * @param string $mode The mode string |
| 487 | * |
| 488 | * @return bool|type\type_interface |
| 489 | */ |
| 490 | protected function find_type(string $mode) |
| 491 | { |
| 492 | /** @var type_interface $type */ |
| 493 | foreach ($this->types as $type) |
| 494 | { |
| 495 | if ($type->get_type() === $mode) |
| 496 | { |
| 497 | return $type; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | return false; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Returns the ban_info from the cache. |
| 506 | * If they're not in the cache, bans are retrieved from the database |
| 507 | * and then put into the cache. |
| 508 | * The array contains an array for each mode with respectively |
| 509 | * three values for 'item', 'end' and 'reason' only. |
| 510 | * |
| 511 | * @return array |
| 512 | */ |
| 513 | protected function get_info_cache(): array |
| 514 | { |
| 515 | $ban_info = $this->cache->get(self::CACHE_KEY_INFO); |
| 516 | if ($ban_info === false) |
| 517 | { |
| 518 | $sql = 'SELECT ban_mode, ban_item, ban_end, ban_reason_display |
| 519 | FROM ' . $this->bans_table; |
| 520 | $result = $this->db->sql_query($sql); |
| 521 | |
| 522 | $ban_info = []; |
| 523 | |
| 524 | while ($row = $this->db->sql_fetchrow($result)) |
| 525 | { |
| 526 | if (!isset($ban_info[$row['ban_mode']])) |
| 527 | { |
| 528 | $ban_info[$row['ban_mode']] = []; |
| 529 | } |
| 530 | |
| 531 | $ban_info[$row['ban_mode']][] = [ |
| 532 | 'item' => $row['ban_item'], |
| 533 | 'end' => $row['ban_end'], |
| 534 | 'reason' => $row['ban_reason_display'], |
| 535 | ]; |
| 536 | } |
| 537 | $this->db->sql_freeresult($result); |
| 538 | |
| 539 | $this->cache->put(self::CACHE_KEY_INFO, $ban_info, self::CACHE_TTL); |
| 540 | } |
| 541 | |
| 542 | return $ban_info; |
| 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Get ban info message |
| 547 | * |
| 548 | * @param array $ban_row Ban data row from database |
| 549 | * @param string $ban_triggered_by Ban triggered by; allowed 'user', 'ip', 'email |
| 550 | * @param string $contact_link Contact link URL |
| 551 | * |
| 552 | * @return string Ban message |
| 553 | */ |
| 554 | public function get_ban_message(array $ban_row, string $ban_triggered_by, string $contact_link): string |
| 555 | { |
| 556 | if ($ban_row['end'] > 0) |
| 557 | { |
| 558 | $till_date = $this->user->format_date($ban_row['end']); |
| 559 | $ban_type = 'BOARD_BAN_TIME'; |
| 560 | } |
| 561 | else |
| 562 | { |
| 563 | $till_date = ''; |
| 564 | $ban_type = 'BOARD_BAN_PERM'; |
| 565 | } |
| 566 | |
| 567 | $message = $this->language->lang($ban_type, $till_date, '<a href="' . $contact_link . '">', '</a>'); |
| 568 | $message .= !empty($ban_row['reason']) ? '<br><br>' . $this->language->lang('BOARD_BAN_REASON', $ban_row['reason']) : ''; |
| 569 | $message .= '<br><br><em>' . $this->language->lang('BAN_TRIGGERED_BY_' . strtoupper($ban_triggered_by)) . '</em>'; |
| 570 | |
| 571 | return $message; |
| 572 | } |
| 573 | } |