sac-a-push.phh

   1 <?php
   2 /*
   3  *  brisk - Obj/sac-a-push.phh
   4  *
   5  *  Copyright (C) 2012-2014 Matteo Nastasi
   6  *                          mailto: nastasi@alternativeoutput.it
   7  *                                  matteo.nastasi@milug.org
   8  *                          web: http://www.alternativeoutput.it
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18  * General Public License for more details. You should have received a
  19  * copy of the GNU General Public License along with this program; if
  20  * not, write to the Free Software Foundation, Inc, 59 Temple Place -
  21  * Suite 330, Boston, MA 02111-1307, USA.
  22  *
  23  */
  24
  25 define('SITE_PREFIX', '/brisk/');
  26 define('SITE_PREFIX_LEN', 7);
  27
  28 define('DIRECT_ST_READ',  1);
  29 define('DIRECT_ST_WRITE', 2);
  30
  31 declare(ticks = 1);
  32
  33 function global_dump()
  34 {
  35     GLOBAL $G_alarm_passwd, $G_ban_list, $G_black_list, $G_btrace_pref_sub, $G_dbauth;
  36     GLOBAL $G_dbpfx, $G_donors_all, $G_donors_cur, $G_is_local, $G_lang;
  37     GLOBAL $G_poll_entries, $G_poll_name, $G_poll_title, $G_proxy_white_list;
  38     GLOBAL $G_room_roadmap, $G_shutdown;
  39     GLOBAL $G_splash_content, $G_splash_contents, $G_splash_cont_idx;
  40     GLOBAL $G_splash_h, $G_splash_idx, $G_splash_interval, $G_splash_timeout;
  41     GLOBAL $G_splash_w, $G_topbanner, $G_with_donors, $G_with_poll;
  42     GLOBAL $G_with_splash, $G_sidebanner, $G_sidebanner_idx;
  43     GLOBAL $G_with_topbanner;
  44
  45     fprintf(STDERR, "G_alarm_passwd = [%s]\n", print_r($G_alarm_passwd, TRUE));
  46     fprintf(STDERR, "G_ban_list = [%s]\n", print_r($G_ban_list, TRUE));
  47     fprintf(STDERR, "G_black_list = [%s]\n", print_r($G_black_list, TRUE));
  48     fprintf(STDERR, "G_btrace_pref_sub = [%s]\n", print_r($G_btrace_pref_sub, TRUE));
  49     fprintf(STDERR, "G_dbauth = [%s]\n", print_r($G_dbauth, TRUE));
  50     fprintf(STDERR, "G_dbpfx = [%s]\n", print_r($G_dbpfx, TRUE));
  51     fprintf(STDERR, "G_donors_all = [%s]\n", print_r($G_donors_all, TRUE));
  52     fprintf(STDERR, "G_donors_cur = [%s]\n", print_r($G_donors_cur, TRUE));
  53     fprintf(STDERR, "G_is_local = [%s]\n", print_r($G_is_local, TRUE));
  54     fprintf(STDERR, "G_lang = [%s]\n", print_r($G_lang, TRUE));
  55     fprintf(STDERR, "G_poll_entries = [%s]\n", print_r($G_poll_entries, TRUE));
  56     fprintf(STDERR, "G_poll_name = [%s]\n", print_r($G_poll_name, TRUE));
  57     fprintf(STDERR, "G_poll_title = [%s]\n", print_r($G_poll_title, TRUE));
  58     fprintf(STDERR, "G_proxy_white_list = [%s]\n", print_r($G_proxy_white_list, TRUE));
  59     fprintf(STDERR, "G_room_roadmap = [%s]\n", print_r($G_room_roadmap, TRUE));
  60     fprintf(STDERR, "G_shutdown = [%s]\n", print_r($G_shutdown, TRUE));
  61     fprintf(STDERR, "G_splash_content = [%s]\n", print_r($G_splash_content, TRUE));
  62     fprintf(STDERR, "G_splash_contents = [%s]\n", print_r($G_splash_contents, TRUE));
  63     fprintf(STDERR, "G_splash_cont_idx = [%s]\n", print_r($G_splash_cont_idx, TRUE));
  64     fprintf(STDERR, "G_splash_h = [%s]\n", print_r($G_splash_h, TRUE));
  65     fprintf(STDERR, "G_splash_idx = [%s]\n", print_r($G_splash_idx, TRUE));
  66     fprintf(STDERR, "G_splash_interval = [%s]\n", print_r($G_splash_interval, TRUE));
  67     fprintf(STDERR, "G_splash_timeout = [%s]\n", print_r($G_splash_timeout, TRUE));
  68     fprintf(STDERR, "G_splash_w = [%s]\n", print_r($G_splash_w, TRUE));
  69     fprintf(STDERR, "G_topbanner = [%s]\n", print_r($G_topbanner, TRUE));
  70     fprintf(STDERR, "G_with_donors = [%s]\n", print_r($G_with_donors, TRUE));
  71     fprintf(STDERR, "G_with_poll = [%s]\n", print_r($G_with_poll, TRUE));
  72     fprintf(STDERR, "G_sidebanner = [%s]\n", print_r($G_sidebanner, TRUE));
  73     fprintf(STDERR, "G_sidebanner_idx = [%s]\n", print_r($G_sidebanner_idx, TRUE));
  74     fprintf(STDERR, "G_with_splash = [%s]\n", print_r($G_with_splash, TRUE));
  75     fprintf(STDERR, "G_with_topbanner = [%s]\n", print_r($G_with_topbanner, TRUE));
  76 }
  77
  78 function pid_save()
  79 {
  80     $pid = getmypid();
  81     $fname = LEGAL_PATH."/brisk.pid";
  82
  83     if (file_exists($fname)) {
  84         log_crit("WARN: brisk.pid already exists");
  85     }
  86     file_put_contents($fname, sprintf("%d\n", $pid));
  87 }
  88
  89 function pid_remove()
  90 {
  91     $fname = LEGAL_PATH."/brisk.pid";
  92
  93     if (file_exists($fname)) {
  94         unlink($fname);
  95     }
  96 }
  97
  98 function post_manage(&$post, $line)
  99 {
 100     $a = explode('&', $line);
 101     for ($i = 0 ; $i < count($a) ; $i++) {
 102         $b = explode('=', $a[$i]);
 103         if (isset($b[0])) {
 104             if (isset($b[1])) {
 105                 $post[$b[0]] = urldecode($b[1]);
 106             }
 107             else {
 108                 $post[$b[0]] = "";
 109             }
 110         }
 111     }
 112 }
 113
 114 function spu_process_info($stream_info, &$method, &$header, &$get, &$post, &$cookie, &$rest, &$cont)
 115 {
 116     $check_post = FALSE;
 117     $header = array();
 118     $get = array();
 119     $post = array();
 120     $rest = 0;
 121     foreach(preg_split("/(\r?\n)/", $stream_info) as $line) {
 122         printf("LINE: [%s]\n", $line);
 123         if ($check_post) {
 124             if (!isset($header['The-Request'])) {
 125                 return FALSE;
 126             }
 127             $req = explode(" ", $header['The-Request']);
 128             $method = $req[0];
 129
 130             if (isset($header['Cookie'])) {
 131
 132                 // LINE: [Cookie:sess=50e053a9511ef; CO_splashdate4=1356420646; CO_list=all; table_idx=7; table_token=510d494986925; lang=it; CO_bin5_pref_ring_endauct=false; CO_splashdate5=1358372822; CO_splashdate1=1363203374; CO_splashdate2=1363374826; __utma=43654517.209888411.1356605271.1356605271.1356605271.1; __utmz=43654517.1356605271.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)]
 133
 134                 $cookies = explode("; ", $header['Cookie']);
 135                 for ($i = 0 ; $i < count($cookies) ; $i++) {
 136                     $name = mb_strstr($cookies[$i], "=", TRUE, 'UTF-8');
 137                     if ($name == FALSE) {
 138                         if (mb_strlen($cookies[$i]) > 0) {
 139                             $cookie[$cookies[$i]] = "";
 140                         }
 141                         else {
 142                             printf("WARNING: malformat cookie element [%s]\n", $cookies[$i]);
 143                         }
 144                         continue;
 145                     }
 146
 147                     $value = mb_substr($cookies[$i], mb_strlen($name)+1, 10140, 'UTF-8');
 148                     $cookie[$name] = urldecode($value);
 149                 }
 150             }
 151             // GET params management
 152             $get_vars = explode('?', $req[1], 2);
 153             $path = $get_vars[0];
 154             if (count($get_vars) > 1) {
 155                 $a = explode('&', $get_vars[1]);
 156                 printf("A COUNT: [%s] %d\n", $a[0], count($a));
 157                 for ($i = 0 ; $i < count($a) ; $i++) {
 158                     $b = explode('=', $a[$i]);
 159                     if ($b[0] == "")
 160                         continue;
 161                     $get[$b[0]] = urldecode($b[1]);
 162                 }
 163             }
 164             // POST params management
 165             if ($req[0] == 'POST') {
 166                 $conttype_all = explode(";", $header['Content-Type']);
 167                 $header['Content-Type'] = $conttype_all[0];
 168                 // $path_all[1-] other things like charset and so on
 169
 170                 // if (content-type is wrong || content-length isn't set)
 171                 //     return false
 172
 173                 if ($header['Content-Type'] != 'application/x-www-form-urlencoded'
 174                     || !isset($header['Content-Length'])) {
 175                     return FALSE;
 176                 }
 177                 $post_len = mb_strlen($line, "ASCII");
 178                 printf("INFO: postlen: %d\n", $post_len);
 179                 $rest = (int)($header['Content-Length']) - $post_len;
 180
 181                 if ($rest == 0) {
 182                     post_manage($post, $line);
 183                 }
 184                 else {
 185                     $cont = $line;
 186                 }
 187             }
 188             break;
 189         }
 190         if ($line == "") {
 191             $check_post = TRUE;
 192             continue;
 193         }
 194         $split = explode(":", $line, 2);
 195         $hea_id = trim(mb_convert_case($split[0], MB_CASE_TITLE, 'UTF-8'));
 196         $header[$hea_id] = $split[1];
 197     }
 198     return $path;
 199 }
 200
 201 function gpcs_var($name, $get, $post, $cookie)
 202 {
 203     if (isset($GLOBALS[$name]))
 204         return FALSE;
 205     else if (isset($cookie[$name]))
 206         return ($cookie[$name]);
 207     else if (isset($post[$name]))
 208         return ($post[$name]);
 209     else if (isset($get[$name]))
 210         return ($get[$name]);
 211
 212     return FALSE;
 213 }
 214
 215 function headers_render($header, $len)
 216 {
 217     $cookies = "";
 218
 219     if (isset($header['cookies'])) {
 220         $cookies = $header['cookies']->render();
 221         unset($header['cookies']);
 222     }
 223     if (isset($header['Location'])) {
 224         $s = sprintf("HTTP/1.1 302 OK\r\n%sLocation: %s\r\n", $cookies, $header['Location']);
 225     }
 226     else if (isset($header['HTTP-Response'])) {
 227         $s = sprintf("HTTP/1.1 %s\r\n", $header['HTTP-Response']);
 228         foreach($header as $key => $value) {
 229             if (strtolower($key) == "http-response")
 230                 continue;
 231             $s .= sprintf("%s: %s\r\n", $key, $value);
 232         }
 233         if ($len >= 0) {
 234             $s .= sprintf("Content-Length: %ld\r\n", $len);
 235         }
 236     }
 237     else {
 238         $s = "HTTP/1.1 200 OK\r\n";
 239
 240         if (!isset($header['Date']))
 241             $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
 242         if (!isset($header['Connection']))
 243             $s .= "Connection: close\r\n";
 244         if (!isset($header['Content-Type']))
 245             $s .= "Content-Type: text/html\r\n";
 246         foreach($header as $key => $value) {
 247             $s .= sprintf("%s: %s\r\n", $key, $value);
 248         }
 249         if ($len >= 0) {
 250             $s .= sprintf("Content-Length: %d\r\n", $len);
 251         }
 252         else {
 253             $s .= "Cache-Control: no-cache, must-revalidate\r\n";
 254             $s .= "Expires: Mon, 26 Jul 1997 05:00:00 GMT\r\n";
 255             if (!isset($header['Content-Encoding'])) {
 256                 $s .= "Content-Encoding: chunked\r\n";
 257             }
 258             $s .= "Transfer-Encoding: chunked\r\n";
 259         }
 260         $s .= $cookies;
 261     }
 262     $s .= "\r\n";
 263
 264     return ($s);
 265 }
 266
 267 /*
 268  *  Caching system using ob php system to cache old style pages
 269  *  to a var and than send it with more calm
 270  */
 271
 272 function shutta()
 273 {
 274   log_rd2("SHUTTA [".connection_status()."] !");
 275 }
 276
 277 register_shutdown_function('shutta');
 278
 279 /*
 280  *  MAIN
 281  */
 282
 283 function get_encoding($header)
 284 {
 285     $enc = "plain";
 286     if (isset($header['Accept-Encoding'])) {
 287         $acc = explode(',', $header['Accept-Encoding']);
 288
 289         if (array_search('gzip', $acc) !== FALSE) {
 290             $enc = 'gzip';
 291         }
 292         else if (array_search('deflate', $acc) !== FALSE) {
 293             $enc = 'deflate';
 294         }
 295     }
 296
 297     return ($enc);
 298 }
 299
 300 class Cookie {
 301     var $attr;
 302     // Set-Cookie: reg_fb_gate=deleted; Expires=Thu, 01-Jan-1970 00:00:01 GMT; Path=/; Domain=.foo.com; HttpOnly
 303     // string $name  [, string $value  [, int $expire = 0  [, string $path  [, string $domain  [, bool $secure = false  [, bool $httponly = false  ]]]]]] )
 304     function Cookie()
 305     {
 306         $this->attr = array();
 307     }
 308
 309     static function create($name)
 310     {
 311         $thiz = new Cookie();
 312
 313         $thiz->attr[$name] = "";
 314
 315         $argc = func_num_args();
 316         for ($i = 1 ; $i < $argc ; $i++) {
 317             $arg = func_get_arg($i);
 318             switch ($i) {
 319             case 1:
 320                 $thiz->attr[$name] = urlencode($arg);
 321                 break;
 322             case 2:
 323                 $thiz->attr['Expires'] = gmdate('D, d M Y H:i:s \G\M\T', $arg); // RFC 1211 format
 324                 break;
 325             case 3:
 326                 $thiz->attr['Path'] = $arg;
 327                 break;
 328             case 4:
 329                 $thiz->attr['Domain'] = $arg;
 330                 break;
 331             case 5:
 332                 if ($arg == TRUE) {
 333                     $thiz->attr['Secure'] = NULL;
 334                 }
 335                 break;
 336             case 6:
 337                 if ($arg == TRUE) {
 338                     $thiz->attr['HttpOnly'] = NULL;
 339                 }
 340                 break;
 341             default:
 342                 return FALSE;
 343             }
 344         }
 345
 346         return $thiz;
 347     }
 348
 349     function render()
 350     {
 351         $r = "Set-Cookie: ";
 352         $isfirst = TRUE;
 353
 354         foreach ($this->attr as $k => $v) {
 355             if ($v == NULL) {
 356                 $r .= sprintf("%s%s", ($isfirst ? "" : "; "), $k);
 357             }
 358             else {
 359                 $r .= sprintf("%s%s=%s", ($isfirst ? "" : "; "), $k, $v);
 360             }
 361             $isfirst = FALSE;
 362         }
 363         $r .= "\r\n";
 364
 365         return $r;
 366     }
 367 }
 368
 369 class Cookies {
 370     var $cookies;
 371
 372     function Cookies()
 373     {
 374         $this->cookies = array();
 375     }
 376
 377     function add($name)
 378     {
 379         if (($cookie = call_user_func_array("Cookie::create", func_get_args())) == FALSE)
 380             return (FALSE);
 381
 382         array_push($this->cookies, $cookie);
 383
 384         return (TRUE);
 385     }
 386
 387     function render()
 388     {
 389         $r = "";
 390         foreach ($this->cookies as $cookie) {
 391             $r .= $cookie->render();
 392         }
 393
 394         return ($r);
 395     }
 396 }
 397
 398
 399 class Sac_a_push {
 400     // maybe fixed_fd is unuseful
 401     static $fixed_fd = 3;
 402     static $cnt_master = NULL;
 403     static $cnt_slave  = NULL;
 404
 405     var $file_socket;
 406     var $unix_socket;
 407     var $direct_socket;   // socket where read direct commands
 408     var $socks;
 409     var $s2u;             // user associated with input socket
 410     var $s2p;             // pending page associated with input socket
 411     var $pending_pages;
 412     var $is_daemon;
 413
 414     var $list_web;
 415     var $list_cmd;
 416     var $in;
 417
 418     var $debug;
 419     var $blocking_mode;
 420
 421     var $app;
 422
 423     var $curtime;
 424
 425     var $rndstr;
 426     var $main_loop;
 427
 428     function Sac_a_push()
 429     {
 430     }
 431
 432     function sig_handler($sig)
 433     {
 434         switch ($sig) {
 435         case SIGINT:
 436             exit(1);
 437             break;
 438         case SIGTERM:
 439             if (static::$cnt_master != NULL) {
 440                     fwrite(static::$cnt_master, "\nshutdown\n");
 441                     fflush(static::$cnt_master);
 442             }
 443             else {
 444                 exit(1);
 445             }
 446             break;
 447         case SIGHUP:
 448             if (static::$cnt_master != NULL) {
 449                 fwrite(static::$cnt_master, "\nreload\n");
 450                 fflush(static::$cnt_master);
 451             }
 452             break;
 453         }
 454     }
 455
 456     static function create(&$app, $sockname, $debug, $blocking_mode, $argv)
 457     {
 458         $thiz = new Sac_a_push();
 459
 460         $thiz->app = $app;
 461         $thiz->file_socket = $sockname;
 462         $thiz->unix_socket = "unix://$sockname";
 463         $thiz->direct_socket = "unix://${sockname}2";
 464         $thiz->debug = $debug;
 465         $thiz->socks = array();
 466         $thiz->s2u  = array();
 467         $thiz->s2p  = array();
 468         $thiz->pending_pages = array();
 469         $thiz->is_daemon = FALSE;
 470
 471         if (array_search("-d", $argv) !== FALSE || array_search("--daemon", $argv) !== FALSE) {
 472             $thiz->is_daemon = TRUE;
 473         }
 474
 475         // create a couple of sockets for control management
 476         if (($sockpair = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM,
 477                                             STREAM_IPPROTO_IP)) == FALSE) {
 478             return FALSE;
 479         }
 480         static::$cnt_master = $sockpair[0];
 481         static::$cnt_slave  = $sockpair[1];
 482
 483         pcntl_signal(SIGTERM, array("Sac_a_push", "sig_handler"));
 484         pcntl_signal(SIGINT, array("Sac_a_push", "sig_handler"));
 485         pcntl_signal(SIGHUP, array("Sac_a_push", "sig_handler"));
 486
 487         $thiz->blocking_mode = 0; // 0 for non-blocking
 488
 489         $thiz->rndstr = "";
 490         for ($i = 0 ; $i < 4096 ; $i++) {
 491             if (($i % 128) == 0)
 492                 $thiz->rndstr .= " ";
 493             else
 494                 $thiz->rndstr .= chr(mt_rand(65, 90));
 495         }
 496
 497         if (file_exists($thiz->file_socket)) {
 498             unlink($thiz->file_socket);
 499         }
 500         if (file_exists($thiz->file_socket."2")) {
 501             unlink($thiz->file_socket."2");
 502         }
 503
 504         $old_umask = umask(0);
 505         if (($thiz->list_web = stream_socket_server($thiz->unix_socket, $err, $errs)) === FALSE) {
 506             return (FALSE);
 507         }
 508         if (($thiz->list_cmd = stream_socket_server($thiz->direct_socket, $err, $errs)) === FALSE) {
 509             return (FALSE);
 510         }
 511         umask($old_umask);
 512         stream_set_blocking($thiz->list_web, $thiz->blocking_mode); # Set the stream to non-blocking
 513         stream_set_blocking($thiz->list_cmd, $thiz->blocking_mode); # Set the stream to non-blocking
 514
 515         if (($thiz->in = fopen("php://stdin", "r")) === FALSE) {
 516             return(FALSE);
 517         }
 518
 519         $thiz->main_loop = FALSE;
 520
 521         return ($thiz);
 522     }
 523
 524     function socks_set($sock, $user, $pendpage)
 525     {
 526         $id = intval($sock);
 527
 528         $this->socks[$id] = $sock;
 529         if ($user != NULL)
 530             $this->s2u[$id]   = $user;
 531         if ($pendpage != NULL)
 532             $this->s2p[$id]   = $pendpage;
 533     }
 534
 535     function socks_unset($sock)
 536     {
 537         $id = intval($sock);
 538
 539         if (isset($this->s2u[$id]))
 540             unset($this->s2u[$id]);
 541         if (isset($this->s2p[$id]))
 542             unset($this->s2p[$id]);
 543         unset($this->socks[$id]);
 544     }
 545
 546     function pendpage_try_addcont(&$new_socket, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont)
 547     {
 548         $pendpage = PendingPage::pendingpage_continue(&$new_socket, $this->curtime, $tout, $method,
 549                                                            $header,           $get, $post, $cookie,
 550                                                              $path,          $addr, $rest, $cont);
 551
 552         $pendpage->try_flush($this->curtime);
 553         // Add $pendpage to the pendpage array (in any case)
 554         fprintf(STDERR, "IMPORTANT: Pendadd: %d\n", $pendpage->status);
 555         $this->pendpage_add($pendpage);
 556     }
 557
 558     function pendpage_try_addflush(&$new_socket, $tout, $enc, $header_out, $content)
 559     {
 560         $pendpage = PendingPage::pendingpage_flushing($new_socket, $this->curtime, $tout, $enc, $header_out, $content);
 561
 562         if ($pendpage->try_flush($this->curtime) == FALSE) {
 563             // Add $pendpage to the pendpage array
 564             $this->pendpage_add($pendpage);
 565         }
 566     }
 567
 568     function pendpage_add($pendpage)
 569     {
 570         array_push($this->pending_pages, $pendpage);
 571         $this->socks_set($pendpage->socket_get(), NULL, $pendpage);
 572     }
 573
 574     function pendpage_rem($pendpage)
 575     {
 576         $sock = $pendpage->socket_get();
 577         if (($key = array_search($pendpage, $this->pending_pages)) !== FALSE) {
 578             unset($this->pending_pages[$key]);
 579         }
 580         else {
 581             fprintf(STDERR, "WARNING: pendpage not found\n");
 582         }
 583         $this->socks_unset($sock);
 584         fprintf(STDERR, "PP_REM: %d\n", intval($sock));
 585     }
 586
 587
 588     function pendpage_try_addwait(&$new_socket, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont)
 589     {
 590         $pendpage = PendingPage::pendingpage_waiting($new_socket, $this->curtime, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont);
 591         /*
 592         if ($pendpage->try_flush($this->curtime) == FALSE) {
 593             // Add $pendpage to the pendpage array
 594             */
 595         $this->pendpage_add($pendpage);
 596         /*
 597         }
 598         */
 599     }
 600
 601     function garbage_manager($force)
 602     {
 603         $this->app->garbage_manager($force);
 604
 605         foreach ($this->socks as $k => $sock) {
 606             $id = intval($sock);
 607             if (isset($this->s2u[$id])) {
 608                 if ($this->s2u[$id]->the_end) {
 609                     if ($this->s2u[$id]->rd_socket_get() != NULL) {
 610                         $this->s2u[$id]->rd_socket_set(NULL);
 611                     }
 612                     unset($this->socks[$id]);
 613                     unset($this->s2u[$id]);
 614                     fclose($sock);
 615                     printf("CLOSE ON GARBAGE MANAGER\n");
 616                 }
 617             }
 618         }
 619         $this->app->users_cleanup();
 620     }
 621
 622     function run()
 623     {
 624         GLOBAL $DOCUMENT_ROOT, $HTTP_HOST;
 625
 626         GLOBAL $G_alarm_passwd, $G_ban_list, $G_black_list, $G_cloud_smasher, $G_provider_proxy;
 627         GLOBAL $G_btrace_pref_sub, $G_dbauth;
 628         GLOBAL $G_dbpfx, $G_donors_all, $G_donors_cur, $G_is_local, $G_lang;
 629         GLOBAL $G_poll_entries, $G_poll_name, $G_poll_title, $G_proxy_white_list;
 630         GLOBAL $G_room_roadmap, $G_shutdown;
 631         GLOBAL $G_splash_content, $G_splash_contents, $G_splash_cont_idx;
 632         GLOBAL $G_splash_h, $G_splash_idx, $G_splash_interval, $G_splash_timeout;
 633         GLOBAL $G_splash_w, $G_topbanner, $G_with_donors, $G_with_poll;
 634         GLOBAL $G_with_splash, $G_sidebanner, $G_sidebanner_idx;
 635         GLOBAL $G_with_topbanner;
 636         GLOBAL $G_tos_vers, $G_tos_fname, $G_tos_dtsoft, $G_tos_dthard, $G_tos_idx, $G_doc_path;
 637
 638         if ($this->main_loop) {
 639             return (FALSE);
 640         }
 641
 642         $this->main_loop = TRUE;
 643
 644         while ($this->main_loop) {
 645             $this->app->sess_cur_set(FALSE);
 646             $this->curtime = time();
 647             fprintf(STDERR, "IN LOOP: Current opened: %d  pending_pages: %d\n", count($this->socks), count($this->pending_pages));
 648
 649             /* Prepare the read array */
 650             /* // when we manage it ... */
 651             /* if ($shutdown)  */
 652             /*     $read   = array_merge(array("$in" => $in), $socks); */
 653             /* else */
 654             $pre_read = array_merge(array(intval($this->list_web) => $this->list_web,
 655                                           intval($this->list_cmd) => $this->list_cmd,
 656                                           intval(static::$cnt_slave) => static::$cnt_slave),
 657                                     $this->socks);
 658             if ($this->is_daemon == FALSE) {
 659                 $read = array_merge($pre_read, array(intval($this->in) => $this->in));
 660             }
 661             else {
 662                 $read = $pre_read;
 663             }
 664
 665             if ($this->debug > 1) {
 666                 printf("PRE_SELECT\n");
 667                 print_r($read);
 668             }
 669             $write  = NULL;
 670             $except = NULL;
 671             $num_changed_sockets = @stream_select($read, $write, $except, 0, 500000);
 672
 673             if ($num_changed_sockets == 0) {
 674                 printf(" no data in 5 secs, splash [%d]\n", $G_with_splash);
 675             }
 676             else if ($num_changed_sockets > 0) {
 677                 printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 678                 if ($this->debug > 1) {
 679                     print_r($read);
 680                 }
 681                 /* At least at one of the sockets something interesting happened */
 682                 foreach ($read as $i => $sock) {
 683                     $id = intval($sock);
 684                     $manage_page = FALSE;
 685                     /* is_resource check is required because there is the possibility that
 686                        during new request an old connection is closed */
 687                     if (!is_resource($sock)) {
 688                         continue;
 689                     }
 690                     if ($sock === $this->list_web) {
 691                         printf("NUOVA CONNEX\n");
 692                         if (($new_unix = stream_socket_accept($this->list_web)) == FALSE) {
 693                             printf("SOCKET_ACCEPT FAILED\n");
 694                             continue;
 695                         }
 696                         $stream_info = "";
 697                         $method      = "";
 698                         $get         = array();
 699                         $post        = array();
 700                         $cookie      = array();
 701                         $rest        = 0;
 702                         $cont        = "";
 703                         if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 704                             printf("NEW_SOCKET: %d\n", intval($new_socket));
 705                             stream_set_blocking($new_socket, $this->blocking_mode); // Set the stream to non-blocking
 706                             printf("RECEIVED HEADER:\n%s", $stream_info);
 707                             if (($path = spu_process_info($stream_info, $method, $header,
 708                                                           $get, $post, $cookie, $rest, $cont))
 709                                 == FALSE) {
 710                                 fprintf(STDERR, "TODO: fix wrong header management\n");
 711                             }
 712                             $addr = stream_socket_get_name($new_socket, TRUE);
 713                             printf("PATH: [%s]\n", $path);
 714                             if ($method == "POST" && $rest > 0) {
 715                                 if (isset($header['Expect']) && $header['Expect'] == '100-continue') {
 716                                     fprintf(STDERR, "\nPOSTA DE CHE\n\n");
 717                                     $this->pendpage_try_addcont($new_socket, 20,
 718                                                                 $method, $header, $get, $post, $cookie,
 719                                                                 $path, $addr, $rest, $cont);
 720                                 }
 721                                 else {
 722                                     $this->pendpage_try_addwait($new_socket, 20,
 723                                                                 $method, $header, $get, $post, $cookie,
 724                                                                 $path, $addr, $rest, $cont);
 725                                 }
 726                             }
 727                             else {
 728                                 $manage_page = TRUE;
 729                             }
 730
 731                             printf("number of sockets after %d\n", count($this->socks));
 732                         }
 733                         else {
 734                             printf("WARNING: ancillary_getstream failed\n");
 735                         }
 736                     }
 737                     else if ($sock === $this->list_cmd) {
 738                         printf("NUOVA DIRECT CONNEX\n");
 739                         if (($new_unix = stream_socket_accept($this->list_cmd)) == FALSE) {
 740                             printf("SOCKET_ACCEPT FAILED\n");
 741                             continue;
 742                         }
 743                         stream_set_blocking($new_unix, $this->blocking_mode);
 744                         $this->direct_mgmt($new_unix);
 745                     } // not socket_list nor socket_list_cmd
 746                     else {  // already opened socket
 747                         $buf = fread($sock, 4096);
 748                         // if socket is closed
 749                         if ($buf == FALSE || feof($sock)) {
 750                             // close socket case
 751                             if ($buf == FALSE) {
 752                                 printf("INFO: read return false\n");
 753                             }
 754                             if ($sock === $this->list_web) {
 755                                 printf("Arrivati %d bytes da list\n", mb_strlen($buf, "ASCII"));
 756                                 return(21);
 757                             }
 758                             else if ($sock === $this->list_cmd) {
 759                                 printf("Arrivati %d bytes da list_cmd\n", mb_strlen($buf, "ASCII"));
 760                                 return(23);
 761                             }
 762                             else if ($sock === $this->in || $sock === static::$cnt_slave) {
 763                                 printf("Arrivati %d bytes da stdin\n", mb_strlen($buf, "ASCII"));
 764                                 return(22);
 765                             }
 766                             else {
 767                                 unset($this->socks[$id]);
 768                                 if (isset($this->s2u[$id])) {
 769                                     // $user_a[$s2u[$id]]->disable();
 770                                     if ($this->s2u[$id]->rd_socket_get() != NULL) {
 771                                         // try to send close frame (for websocket)
 772                                         $clo = $this->s2u[$id]->stream_close();
 773                                         $clo_l = mb_strlen($clo, "ASCII");
 774                                         @fwrite($sock, $clo, $clo_l);
 775                                         $this->s2u[$id]->rd_socket_set(NULL);
 776                                     }
 777                                     unset($this->s2u[$id]);
 778                                 }
 779                             }
 780                             fclose($sock);
 781                             printf("CLOSE ON READ\n");
 782
 783                             if ($this->debug > 1) {
 784                                 printf("post unset\n");
 785                                 print_r($this->socks);
 786                             }
 787                         }  // if ($buf == FALSE || mb_strlen($buf, "ASCII") == 0) {
 788                         else { // data on the socket
 789                             if ($this->debug > 1) {
 790                                 print_r($read);
 791                             }
 792                             if ($sock === $this->list_web) {
 793                                 printf("Arrivati %d bytes da list\n", mb_strlen($buf, "ASCII"));
 794                             }
 795                             else if ($sock === $this->list_cmd) {
 796                                 printf("Arrivati %d bytes da list_cmd\n", mb_strlen($buf, "ASCII"));
 797                             }
 798                             else if ($sock === $this->in || $sock === static::$cnt_slave) {
 799                                 printf("Arrivati %d bytes da stdin\n", mb_strlen($buf, "ASCII"));
 800                                 $line = trim($buf);
 801                                 if ($line == "reload") {
 802                                     require("$DOCUMENT_ROOT/Etc/".BRISK_CONF);
 803                                     $this->app->reload(FALSE, $G_ban_list, $G_black_list,
 804                                                        $G_cloud_smasher, $G_provider_proxy);
 805                                     global_dump();
 806                                 }
 807                                 else if ($line == "shutdown" || $line == "sd") {
 808                                     if ($this->app->dump_data()) {
 809                                         return(0);
 810                                     }
 811                                     else {
 812                                         return(1);
 813                                     }
 814                                 }
 815                             }
 816                             else {  // data arrived from not special socket
 817                                 $key = array_search("$sock", $this->socks);
 818                                 fprintf(STDERR, "Arrivati %d bytes dalla socket n. %d\n", mb_strlen($buf, "ASCII"), $key);
 819                                 if (isset($this->s2p[$id])) {
 820                                     $this->s2p[$id]->rest -= mb_strlen($buf, "ASCII");
 821                                     $this->s2p[$id]->cont .= $buf;
 822                                     if ($this->s2p[$id]->rest <= 0) {
 823                                         $header = $new_socket = $path = $addr = $get = $cookie = 0;
 824                                         $post = array();
 825
 826                                         $this->s2p[$id]->context_get($header, $new_socket, $path, $addr, $get, $post, $cookie);
 827                                         $this->pendpage_rem($this->s2p[$id]);
 828                                         fprintf(STDERR, "SOCKET RUN: %s\n", $new_socket);
 829
 830                                         $manage_page = TRUE;
 831                                     }
 832                                 }
 833                             }
 834                         }
 835                     }
 836
 837                     if ($manage_page == TRUE) {
 838                         printf("M: %s\nHEADER:\n", $method);
 839                         print_r($header);
 840                         printf("GET:\n");
 841                         print_r($get);
 842                         printf("POST:\n");
 843                         print_r($post);
 844                         printf("COOKIE:\n");
 845                         print_r($cookie);
 846
 847                         $header_out = array();
 848                         // TODO: MOVE DOWN request_mgr to factorize new_sockets and POST closed
 849                         $rret = FALSE;
 850                         if (!strncmp($path, SITE_PREFIX, SITE_PREFIX_LEN)) {
 851                             $rret = $this->app->request_mgr($this, $header, $header_out, $new_socket, substr($path, SITE_PREFIX_LEN), $addr, $get, $post, $cookie);
 852                         }
 853                         if ($rret == FALSE) {
 854                             // FIXME: manage 404 !!!
 855                             printf("TODO: fix unknown page\n");
 856                             fclose($new_socket);
 857                         }
 858                     }
 859                 }
 860             }
 861
 862             $this->garbage_manager(FALSE);
 863
 864             /* manage unfinished pages */
 865             foreach ($this->pending_pages as $k => $pendpage) {
 866                 // TODO: try_flush if exists in the class
 867                 if ($pendpage->try_flush($this->curtime) == TRUE) {
 868                     unset($this->pending_pages[$k]);
 869                 }
 870             }
 871
 872             /*
 873                $response:                        raw stream data not sent
 874                $content:                         html consistent data (<script bla bla>)
 875                $user->stream_keepalive($w_ping)  ping srv->cli OR srv->cli + cli->srv if $w_ping == TRUE
 876             */
 877
 878             /* manage open streaming */
 879             foreach ($this->socks as $k => $sock) {
 880                 $id = intval($sock);
 881                 if (isset($this->s2u[$id])) {
 882                     $user = $this->s2u[$id];
 883
 884                     if ($user->rd_toflush) {
 885                         if (fflush($sock) == FALSE)
 886                             continue;
 887                         else
 888                             $user->rd_toflush = FALSE;
 889                     }
 890                     $response = $user->rd_cache_get();
 891                     $do_ping = FALSE;
 892                     if (($this->curtime - $user->lacc) > (EXPIRE_TIME_RD / 3)) {
 893                         $do_ping = TRUE;
 894                     }
 895                     else {
 896                         $user->ping_req = FALSE;
 897                     }
 898
 899                     if ($response == "") {
 900                         $content = "";
 901                         $user->stream_main($content, $get, $post, $cookie);
 902                         printf("[%s] [%d] [%d]\n", $user->name, $user->lacc, $this->curtime);
 903                         if ($do_ping && $user->ping_req == FALSE) {
 904                             $content .= $user->stream_keepalive(TRUE);
 905                             $user->ping_req = TRUE;
 906                         }
 907                         else if ($content == "" && $user->rd_kalive_is_expired($this->curtime)) {
 908                             $content = $user->stream_keepalive(FALSE);
 909                         }
 910                         if ($content != "") {
 911                             $response = $user->chunked_content($content);
 912                         }
 913                     }
 914
 915                     if ($response != "") {
 916                         // echo "SPIA: [".substr($response, 0, 60)."...]\n";
 917                         // echo "SPIA: [".$response."]\n";
 918                         $response_l = mb_strlen($response, "ASCII");
 919                         $wret = @fwrite($sock, $response, $response_l);
 920                         if ($wret < $response_l) {
 921                             printf("TROUBLE WITH FWRITE: %d\n", $wret);
 922                             $user->rd_cache_set(mb_substr($response, $wret, $response_l - $wret, "ASCII"));
 923                         }
 924                         else {
 925                             $user->rd_cache_set("");
 926                         }
 927                         if (fflush($sock) == FALSE) {
 928                             $user->rd_toflush = TRUE;
 929                             continue;
 930                         }
 931                         $user->rd_kalive_reset($this->curtime);
 932                     }
 933
 934                     // close socket after a while to prevent client memory consumption
 935                     if ($user->rd_endtime_is_expired($this->curtime)) {
 936                         if ($this->s2u[$id]->rd_socket_get() != NULL) {
 937                             $this->s2u[$id]->rd_socket_set(NULL);
 938                         }
 939                         unset($this->socks[$id]);
 940                         unset($this->s2u[$id]);
 941                         $clo = $user->stream_close();
 942                         $clo_l = mb_strlen($clo, "ASCII");
 943                         @fwrite($sock, $clo, $clo_l);
 944                         fclose($sock);
 945                         printf("CLOSE ON LOOP\n");
 946                     }
 947                 }  // if (isset($this->s2u[$id]...
 948             }  // foreach ($this->socks...
 949             printf("\n");
 950             if (defined('CURL_DE_SAC_VERS')) {
 951                 $this->app->cds->process();
 952             }
 953         }  // while (...
 954     }  // function run(...
 955
 956     function direct_command($cmdstr)
 957     {
 958         GLOBAL $G_alarm_passwd;
 959
 960         $cmd = cmd_deserialize($cmdstr);
 961
 962         if (!isset($cmd['cmd'])) {
 963             return cmd_return(500, 'no cmd found');
 964         }
 965         // "cmd" => "userauth", "sess" => 'xxxxxxxxxxx', 'private' => 'it_must_be_correct',
 966         //           'the_end' => 'true' );
 967         // cmd=userauth&sess=52d796ac08c47&private=yourpasswd192.168.122.152d796ac08c47&the_end=true
 968         if ($cmd['cmd'] == 'userauth') {
 969             if (!isset($cmd['sess']) || !isset($cmd['private'])) {
 970                 return cmd_return(401, 'malformed cmd');
 971             }
 972             $idx = -1;
 973             if (($user = $this->app->get_user($cmd['sess'], &$idx)) == FALSE)
 974                 return cmd_return(402, 'user not found');
 975
 976             if (($user->flags & USER_FLAG_TY_ADMIN) == 0x00)
 977                 return cmd_return(403, 'permission denied');
 978
 979             if (md5($G_alarm_passwd.$user->ip.$user->sess) != $cmd['private'])
 980                 return cmd_return(404, 'authentication failed ['.$cmd['private'].']['.$G_alarm_passwd.$user->ip.$user->sess.']');
 981
 982             return cmd_return(200, 'success');
 983         }
 984
 985         return cmd_return(501, 'no cmd found');
 986     }
 987
 988     function direct_mgmt($socket)
 989     {
 990         printf("DIRECT: begin\n");
 991         $st = DIRECT_ST_READ;
 992         $cmd_all = "";
 993         $endtime = $this->curtime + 3;
 994
 995         while(time() <= $endtime) {
 996             printf("DIRECT: init loop %d\n", $st);
 997             if ($st == DIRECT_ST_READ) {
 998                 $buf = fread($socket, 4096);
 999                 if ($buf == FALSE && feof($socket)) {
1000                     break;
1001                 }
1002                 else if ($buf != FALSE && strlen($buf) > 0) {
1003                     $cmd_all .= $buf;
1004
1005                     if (substr(trim($cmd_all), -13) == "&the_end=true") {
1006                         $output_arr = $this->direct_command($cmd_all);
1007                         $output = cmd_serialize($output_arr);
1008                         $output_cur = 0;
1009                         $output_len = mb_strlen($output, "ASCII");
1010                         $st = DIRECT_ST_WRITE;
1011                         continue;
1012                     }
1013                 }
1014             }
1015             else if ($st == DIRECT_ST_WRITE)  {
1016                 $ret = fwrite($socket, $output, $output_len);
1017                 if ($ret === FALSE) {
1018                     if (feof($socket)) {
1019                         break;
1020                     }
1021                 }
1022                 else if ($ret > 0 && $ret < $output_len) {
1023                     $output = substr($output, -($output_len - $ret));
1024                     $output_len -= $ret;
1025                     continue;
1026                 }
1027                 else if ($ret == $output_len) {
1028                     fclose($socket);
1029                     return TRUE;
1030                 }
1031             }
1032             usleep(10000);
1033         }
1034
1035         fclose($socket);
1036         return FALSE;
1037     }
1038 } // class Sac_a_push
1039 ?>