web/spush/brisk-spush.php

   1 #!/usr/bin/php
   2 <?php
   3 /*
   4  *  brisk - spush/brisk-spush.php
   5  *
   6  *  Copyright (C) 2012 Matteo Nastasi
   7  *                          mailto: nastasi@alternativeoutput.it
   8  *                                  matteo.nastasi@milug.org
   9  *                          web: http://www.alternativeoutput.it
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19  * General Public License for more details. You should have received a
  20  * copy of the GNU General Public License along with this program; if
  21  * not, write to the Free Software Foundation, Inc, 59 Temple Place -
  22  * Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  * TODO
  25  *
  26  *   - from room to table
  27  *   - from table to room
  28  *   - fwrite other issues
  29  *   - manage and test cross forwarder between table and room
  30  *   - setcookie (for tables only)
  31  *   - keepalive management
  32  *   - chunked
  33  *
  34  *   DONE/FROZEN - problema con getpeer (HOSTADDR)
  35  *
  36  *   DONE - index_rd_ifra: last_clean issue
  37  *   DONE - fwrite failed error management (select, buffer where store unsent data, and fwrite check and retry)
  38  *   ABRT - index_wr.php::reload - reload is js-only function
  39  *   DONE - bug: after restart index_rd.php receive from prev clients a lot of req
  40  *   DONE - index_wr.php::chat
  41  *   DONE - index_wr.php::exit
  42  *   DONE - index_rd.php porting
  43  *   DONE - generic var management from internet
  44  *   DONE - index.php auth part
  45  */
  46
  47 $G_base = "../";
  48
  49 require_once("./sac-a-push.phh");
  50 require_once("./brisk-spush.phh");
  51 require_once($G_base."Obj/brisk.phh");
  52 require_once($G_base."Obj/auth.phh");
  53 // require_once("../Obj/proxyscan.phh");
  54 require_once($G_base."index.php");
  55 require_once($G_base."index_wr.php");
  56 require_once($G_base."index_rd_ifra.php");
  57 require_once($G_base."briskin5/Obj/briskin5.phh");
  58
  59 define('SITE_PREFIX', '/brisk/');
  60
  61 function headers_render($header)
  62 {
  63
  64     $s = "";
  65     $s .= "HTTP/1.1 200 OK\r\n";
  66     if (!isset($header['Date']))
  67         $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
  68     if (!isset($header['Connection']))
  69         $s .= "Connection: close\r\n";
  70     if (!isset($header['Content-Type']))
  71         $s .= "Content-Type: text/html\r\n";
  72     foreach($header as $key => $value) {
  73         $s .= sprintf("%s: %s\r\n", $key, $value);
  74     }
  75     $s .= "Mop: was/here\r\n";
  76     $s .= "\r\n";
  77
  78     return ($s);
  79 }
  80
  81 /*
  82  *  Caching system using ob php system to cache old style pages
  83  *  to a var and than send it with more calm
  84  */
  85 $G_headers = "";
  86
  87 function shutta()
  88 {
  89   log_rd2("SHUTTA [".connection_status()."] !");
  90 }
  91
  92 register_shutdown_function('shutta');
  93
  94 /*
  95  *  MAIN
  96  */
  97 $shutdown = FALSE;
  98
  99 function main()
 100 {
 101     GLOBAL $G_headers;
 102     GLOBAL $shutdown;
 103     $main_loop = TRUE;
 104
 105     /*
 106      *  INIT
 107      */
 108
 109     $FILE_SOCKET = "/tmp/brisk.sock";
 110     $UNIX_SOCKET = "unix://$FILE_SOCKET";
 111     $debug = 0;
 112     $fixed_fd = 2;
 113     $socks = array();
 114
 115     $blocking_mode = 0; // 0 for non-blocking
 116
 117     if (($room = Room::create()) == FALSE) {
 118         log_crit("load_data failed");
 119         return FALSE;
 120     }
 121
 122     $s2u  = array();
 123
 124     $rndstr = "";
 125     for ($i = 0 ; $i < 4096 ; $i++) {
 126         $rndstr .= chr(mt_rand(65, 90));
 127     }
 128
 129     if (file_exists($FILE_SOCKET)) {
 130         unlink($FILE_SOCKET);
 131     }
 132
 133     $old_umask = umask(0);
 134     if (($list = stream_socket_server($UNIX_SOCKET, $err, $errs)) === FALSE) {
 135         exit(11);
 136     }
 137     umask($old_umask);
 138
 139     if (($in = fopen("php://stdin", "r")) === FALSE) {
 140         exit(11);
 141     }
 142
 143     stream_set_blocking($list, $blocking_mode); # Set the stream to non-blocking
 144
 145     while ($main_loop) {
 146         $curtime = time();
 147         printf("IN LOOP: Current opened: %d\n", count($socks));
 148
 149         /* Prepare the read array */
 150         if ($shutdown)
 151             $read   = array_merge(array("$in" => $in), $socks);
 152         else
 153             $read   = array_merge(array("$list" => $list, "$in" => $in), $socks);
 154
 155         if ($debug > 1) {
 156             printf("PRE_SELECT\n");
 157             print_r($read);
 158         }
 159         $write  = NULL;
 160         $except = NULL;
 161         $num_changed_sockets = stream_select($read, $write, $except, 0, 250000);
 162
 163         if ($num_changed_sockets === FALSE) {
 164             printf("No data in 5 secs");
 165         }
 166         else if ($num_changed_sockets > 0) {
 167             printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 168             if ($debug > 1) {
 169                 print_r($read);
 170             }
 171             /* At least at one of the sockets something interesting happened */
 172             foreach ($read as $i => $sock) {
 173                 if ($sock === $list) {
 174                     printf("NUOVA CONNEX\n");
 175                     $new_unix = stream_socket_accept($list);
 176                     $stream_info = "";
 177                     $method      = "";
 178                     $get         = array();
 179                     $post        = array();
 180                     $cookie      = array();
 181                     if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 182                         stream_set_blocking($new_socket, $blocking_mode); // Set the stream to non-blocking
 183                         printf("RECEIVED HEADER:\n%s", $stream_info);
 184                         $path = spu_process_info($stream_info, $method, $header, $get, $post, $cookie);
 185                         printf("PATH: [%s]\n", $path);
 186                         printf("M: %s\nHEADER:\n", $method);
 187                         print_r($header);
 188                         printf("GET:\n");
 189                         print_r($get);
 190                         printf("POST:\n");
 191                         print_r($post);
 192                         printf("COOKIE:\n");
 193                         print_r($cookie);
 194
 195                         $addr = stream_socket_get_name($new_socket, TRUE);
 196
 197                         switch ($path) {
 198                         case SITE_PREFIX:
 199                         case SITE_PREFIX."index.php":
 200                             $header_out = array();
 201                             ob_start();
 202                             index_main($room, $header_out, $addr, $get, $post, $cookie);
 203                             $content = ob_get_contents();
 204                             ob_end_clean();
 205                             // printf("OUT: [%s]\n", $G_content);
 206                             fwrite($new_socket, headers_render($header_out).$content);
 207                             fclose($new_socket);
 208                             break;
 209                         case SITE_PREFIX."index_wr.php":
 210                             $header_out = array();
 211                             $addr = "";
 212                             // $ret = socket_getpeername($new_socket, $addr);
 213                             printf("RET: %s\n", $addr);
 214                             // exit(123);
 215                             ob_start();
 216                             index_wr_main($room, $addr, $get, $post, $cookie);
 217                             $content = ob_get_contents();
 218                             ob_end_clean();
 219
 220                             // printf("OUT: [%s]\n", $G_content);
 221                             fwrite($new_socket, headers_render($header_out).$content);
 222                             fclose($new_socket);
 223                             break;
 224                         case SITE_PREFIX."index_rd_ifra.php":
 225                             do {
 226                                 $header_out = array();
 227                                 if (!isset($cookie['sess'])
 228                                     || (($user = $room->get_user($cookie['sess'], $idx)) == FALSE)) {
 229                                     $body = index_rd_ifra_fini(TRUE);
 230                                     fwrite($new_socket, headers_render($header_out).$body);
 231                                     fflush($new_socket);
 232                                     fclose($new_socket);
 233                                     break;
 234                                 }
 235                                 // close a previous opened index_read_ifra socket, if exists
 236                                 if (($prev = $user->rd_socket_get()) != NULL) {
 237                                     unset($s2u[intval($user->rd_socket_get())]);
 238                                     unset($socks[intval($user->rd_socket_get())]);
 239                                     fclose($user->rd_socket_get());
 240                                     printf("CLOSE AND OPEN AGAIN ON IFRA2\n");
 241                                     $user->rd_socket_set(NULL);
 242                                 }
 243
 244                                 $body = "";
 245                                 index_rd_ifra_init($room, $user, $header_out, $body, $get, $post, $cookie);
 246                                 fwrite($new_socket, headers_render($header_out).$body);
 247                                 fflush($new_socket);
 248
 249                                 $s2u[intval($new_socket)] = $idx;
 250                                 $socks[intval($new_socket)] = $new_socket;
 251                                 $user->rd_socket_set($new_socket);
 252                             } while (FALSE);
 253
 254                             break;
 255                         }
 256                     }
 257                     else {
 258                         printf("WARNING: ancillary_getstream failed\n");
 259                     }
 260                 }
 261                 else {
 262                     if (($buf = fread($sock, 512)) === FALSE) {
 263                         printf("error read\n");
 264                         exit(123);
 265                     }
 266                     else if (strlen($buf) === 0) {
 267                         if ($sock === $list) {
 268                             printf("Arrivati %d bytes da list\n", strlen($buf));
 269                         }
 270                         else if ($sock === $in) {
 271                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 272                         }
 273                         else {
 274                             // $user_a[$s2u[intval($sock)]]->disable();
 275                             if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 276                                 $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 277                             }
 278                             unset($socks[intval($sock)]);
 279                             unset($s2u[intval($sock)]);
 280                             fclose($sock);
 281                             printf("CLOSE ON READ\n");
 282                         }
 283                         if ($debug > 1) {
 284                             printf("post unset\n");
 285                             print_r($socks);
 286                         }
 287                     }
 288                     else {
 289                         if ($debug > 1) {
 290                             print_r($read);
 291                         }
 292                         if ($sock === $list) {
 293                             printf("Arrivati %d bytes da list\n", strlen($buf));
 294                         }
 295                         else if ($sock === $in) {
 296                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 297                         }
 298                         else {
 299                             $key = array_search("$sock", $socks);
 300                             printf("Arrivati %d bytes dalla socket n. %d\n", strlen($buf), $key);
 301                         }
 302                     }
 303                 }
 304             }
 305         }
 306
 307         foreach ($socks as $k => $sock) {
 308             if (isset($s2u[intval($sock)])) {
 309                 $user = $room->user[$s2u[intval($sock)]];
 310                 $body = $user->rd_cache_get();
 311                 if ($body == "")
 312                     index_rd_ifra_main($room, $user, $body);
 313
 314                 if ($body == "" && $user->rd_kalive_is_expired($curtime)) {
 315                     $body = index_rd_ifra_keepalive($user);
 316                 }
 317
 318                 if ($body != "") {
 319                     echo "SPIA: [".substr($body, 0, 60)."...]\n";
 320                     $body_l = mb_strlen($body, "LATIN1");
 321                     $ret = @fwrite($sock, $body);
 322                     if ($ret < $body_l) {
 323                         printf("TROUBLE WITH FWRITE: %d\n", $ret);
 324                         $user->rd_cache_set(mb_substr($body, $ret, $body_l - $ret, "LATIN1"));
 325                     }
 326                     else {
 327                         $user->rd_cache_set("");
 328                     }
 329                     fflush($sock);
 330                     $user->rd_kalive_reset($curtime);
 331                 }
 332
 333                 // close socket after a while to prevent client memory consumption
 334                 if ($user->rd_endtime_is_expired($curtime)) {
 335                     // $user_a[$s2u[intval($sock)]]->disable();
 336                     if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 337                         $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 338                     }
 339                     unset($socks[intval($sock)]);
 340                     unset($s2u[intval($sock)]);
 341                     fclose($sock);
 342                     printf("CLOSE ON LOOP\n");
 343                 }
 344             }
 345         }
 346     }
 347
 348     exit(0);
 349 }
 350
 351 main();
 352 ?>