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  *   - partial write for normal page management
  27  *   - log legal address fix
  28  *   - from room to table
  29  *   - from table to room
  30  *   - fwrite other issues
  31  *   - manage and test cross forwarder between table and room
  32  *   - setcookie (for tables only)
  33  *   - keepalive management
  34  *   - chunked
  35  *
  36  *   DONE/FROZEN - problema con getpeer (HOSTADDR)
  37  *
  38  *   DONE - index_rd_ifra: last_clean issue
  39  *   DONE - fwrite failed error management (select, buffer where store unsent data, and fwrite check and retry)
  40  *   ABRT - index_wr.php::reload - reload is js-only function
  41  *   DONE - bug: after restart index_rd.php receive from prev clients a lot of req
  42  *   DONE - index_wr.php::chat
  43  *   DONE - index_wr.php::exit
  44  *   DONE - index_rd.php porting
  45  *   DONE - generic var management from internet
  46  *   DONE - index.php auth part
  47  */
  48
  49 $G_base = "../";
  50
  51 require_once("./sac-a-push.phh");
  52 require_once("./brisk-spush.phh");
  53 require_once($G_base."Obj/brisk.phh");
  54 require_once($G_base."Obj/auth.phh");
  55 // require_once("../Obj/proxyscan.phh");
  56 require_once($G_base."index.php");
  57 require_once($G_base."index_wr.php");
  58 require_once($G_base."index_rd_ifra.php");
  59 require_once($G_base."briskin5/Obj/briskin5.phh");
  60
  61 define('SITE_PREFIX', '/brisk/');
  62
  63 function headers_render($header)
  64 {
  65
  66     $s = "";
  67     $s .= "HTTP/1.1 200 OK\r\n";
  68     if (!isset($header['Date']))
  69         $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
  70     if (!isset($header['Connection']))
  71         $s .= "Connection: close\r\n";
  72     if (!isset($header['Content-Type']))
  73         $s .= "Content-Type: text/html\r\n";
  74     foreach($header as $key => $value) {
  75         $s .= sprintf("%s: %s\r\n", $key, $value);
  76     }
  77     $s .= "Mop: was/here\r\n";
  78     $s .= "\r\n";
  79
  80     return ($s);
  81 }
  82
  83 /*
  84  *  Caching system using ob php system to cache old style pages
  85  *  to a var and than send it with more calm
  86  */
  87 $G_headers = "";
  88
  89 function shutta()
  90 {
  91   log_rd2("SHUTTA [".connection_status()."] !");
  92 }
  93
  94 register_shutdown_function('shutta');
  95
  96 /*
  97  *  MAIN
  98  */
  99 $shutdown = FALSE;
 100
 101 function main()
 102 {
 103     GLOBAL $G_headers;
 104     GLOBAL $shutdown;
 105     $main_loop = TRUE;
 106
 107     /*
 108      *  INIT
 109      */
 110
 111     $FILE_SOCKET = "/tmp/brisk.sock";
 112     $UNIX_SOCKET = "unix://$FILE_SOCKET";
 113     $debug = 0;
 114     $fixed_fd = 2;
 115     $socks = array();
 116
 117     $blocking_mode = 0; // 0 for non-blocking
 118
 119     if (($room = Room::create()) == FALSE) {
 120         log_crit("load_data failed");
 121         return FALSE;
 122     }
 123
 124     $s2u  = array();
 125     $pages_flush = array();
 126
 127     $rndstr = "";
 128     for ($i = 0 ; $i < 4096 ; $i++) {
 129         $rndstr .= chr(mt_rand(65, 90));
 130     }
 131
 132     if (file_exists($FILE_SOCKET)) {
 133         unlink($FILE_SOCKET);
 134     }
 135
 136     $old_umask = umask(0);
 137     if (($list = stream_socket_server($UNIX_SOCKET, $err, $errs)) === FALSE) {
 138         exit(11);
 139     }
 140     umask($old_umask);
 141
 142     if (($in = fopen("php://stdin", "r")) === FALSE) {
 143         exit(11);
 144     }
 145
 146     stream_set_blocking($list, $blocking_mode); # Set the stream to non-blocking
 147
 148     while ($main_loop) {
 149         $curtime = time();
 150         printf("IN LOOP: Current opened: %d  pages_flush: %d\n", count($socks), count($pages_flush));
 151
 152         /* Prepare the read array */
 153         if ($shutdown)
 154             $read   = array_merge(array("$in" => $in), $socks);
 155         else
 156             $read   = array_merge(array("$list" => $list, "$in" => $in), $socks);
 157
 158         if ($debug > 1) {
 159             printf("PRE_SELECT\n");
 160             print_r($read);
 161         }
 162         $write  = NULL;
 163         $except = NULL;
 164         $num_changed_sockets = stream_select($read, $write, $except, 0, 250000);
 165
 166         if ($num_changed_sockets === FALSE) {
 167             printf("No data in 5 secs");
 168         }
 169         else if ($num_changed_sockets > 0) {
 170             printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 171             if ($debug > 1) {
 172                 print_r($read);
 173             }
 174             /* At least at one of the sockets something interesting happened */
 175             foreach ($read as $i => $sock) {
 176                 if ($sock === $list) {
 177                     printf("NUOVA CONNEX\n");
 178                     $new_unix = stream_socket_accept($list);
 179                     $stream_info = "";
 180                     $method      = "";
 181                     $get         = array();
 182                     $post        = array();
 183                     $cookie      = array();
 184                     if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 185                         stream_set_blocking($new_socket, $blocking_mode); // Set the stream to non-blocking
 186                         printf("RECEIVED HEADER:\n%s", $stream_info);
 187                         $path = spu_process_info($stream_info, $method, $header, $get, $post, $cookie);
 188                         printf("PATH: [%s]\n", $path);
 189                         printf("M: %s\nHEADER:\n", $method);
 190                         print_r($header);
 191                         printf("GET:\n");
 192                         print_r($get);
 193                         printf("POST:\n");
 194                         print_r($post);
 195                         printf("COOKIE:\n");
 196                         print_r($cookie);
 197
 198                         $addr = stream_socket_get_name($new_socket, TRUE);
 199
 200                         switch ($path) {
 201                         case SITE_PREFIX:
 202                         case SITE_PREFIX."index.php":
 203                             $header_out = array();
 204                             ob_start();
 205                             index_main($room, $header_out, $addr, $get, $post, $cookie);
 206                             $content = ob_get_contents();
 207                             ob_end_clean();
 208
 209                             $pgflush = new PageFlush($new_socket, $curtime, 20, $header_out, $content);
 210
 211                             if ($pgflush->try_flush($curtime) == FALSE) {
 212                                 // Add $pgflush to the pgflush array
 213                                 array_push($pages_flush, $pgflush);
 214                             }
 215
 216                             break;
 217                         case SITE_PREFIX."index_wr.php":
 218                             $header_out = array();
 219                             $addr = "";
 220                             // $ret = socket_getpeername($new_socket, $addr);
 221                             printf("RET: %s\n", $addr);
 222                             // exit(123);
 223                             ob_start();
 224                             index_wr_main($room, $addr, $get, $post, $cookie);
 225                             $content = ob_get_contents();
 226                             ob_end_clean();
 227
 228                             // printf("OUT: [%s]\n", $G_content);
 229                             fwrite($new_socket, headers_render($header_out).$content);
 230                             fclose($new_socket);
 231                             break;
 232                         case SITE_PREFIX."index_rd_ifra.php":
 233                             do {
 234                                 $header_out = array();
 235                                 if (!isset($cookie['sess'])
 236                                     || (($user = $room->get_user($cookie['sess'], $idx)) == FALSE)) {
 237                                     $body = index_rd_ifra_fini(TRUE);
 238                                     fwrite($new_socket, headers_render($header_out).$body);
 239                                     fflush($new_socket);
 240                                     fclose($new_socket);
 241                                     break;
 242                                 }
 243                                 // close a previous opened index_read_ifra socket, if exists
 244                                 if (($prev = $user->rd_socket_get()) != NULL) {
 245                                     unset($s2u[intval($user->rd_socket_get())]);
 246                                     unset($socks[intval($user->rd_socket_get())]);
 247                                     fclose($user->rd_socket_get());
 248                                     printf("CLOSE AND OPEN AGAIN ON IFRA2\n");
 249                                     $user->rd_socket_set(NULL);
 250                                 }
 251
 252                                 $body = "";
 253                                 index_rd_ifra_init($room, $user, $header_out, $body, $get, $post, $cookie);
 254                                 fwrite($new_socket, headers_render($header_out).$body);
 255                                 fflush($new_socket);
 256
 257                                 $s2u[intval($new_socket)] = $idx;
 258                                 $socks[intval($new_socket)] = $new_socket;
 259                                 $user->rd_socket_set($new_socket);
 260                             } while (FALSE);
 261
 262                             break;
 263                         }
 264                     }
 265                     else {
 266                         printf("WARNING: ancillary_getstream failed\n");
 267                     }
 268                 }
 269                 else {
 270                     if (($buf = fread($sock, 512)) === FALSE) {
 271                         printf("error read\n");
 272                         exit(123);
 273                     }
 274                     else if (strlen($buf) === 0) {
 275                         if ($sock === $list) {
 276                             printf("Arrivati %d bytes da list\n", strlen($buf));
 277                         }
 278                         else if ($sock === $in) {
 279                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 280                         }
 281                         else {
 282                             // $user_a[$s2u[intval($sock)]]->disable();
 283                             if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 284                                 $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 285                             }
 286                             unset($socks[intval($sock)]);
 287                             unset($s2u[intval($sock)]);
 288                             fclose($sock);
 289                             printf("CLOSE ON READ\n");
 290                         }
 291                         if ($debug > 1) {
 292                             printf("post unset\n");
 293                             print_r($socks);
 294                         }
 295                     }
 296                     else {
 297                         if ($debug > 1) {
 298                             print_r($read);
 299                         }
 300                         if ($sock === $list) {
 301                             printf("Arrivati %d bytes da list\n", strlen($buf));
 302                         }
 303                         else if ($sock === $in) {
 304                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 305                         }
 306                         else {
 307                             $key = array_search("$sock", $socks);
 308                             printf("Arrivati %d bytes dalla socket n. %d\n", strlen($buf), $key);
 309                         }
 310                     }
 311                 }
 312             }
 313         }
 314
 315
 316         foreach ($pages_flush as $k => $pgflush) {
 317             if ($pgflush->try_flush($curtime) == TRUE) {
 318                 unset($pages_flush[$k]);
 319             }
 320         }
 321
 322         foreach ($socks as $k => $sock) {
 323             if (isset($s2u[intval($sock)])) {
 324                 $user = $room->user[$s2u[intval($sock)]];
 325                 $body = $user->rd_cache_get();
 326                 if ($body == "")
 327                     index_rd_ifra_main($room, $user, $body);
 328
 329                 if ($body == "" && $user->rd_kalive_is_expired($curtime)) {
 330                     $body = index_rd_ifra_keepalive($user);
 331                 }
 332
 333                 if ($body != "") {
 334                     echo "SPIA: [".substr($body, 0, 60)."...]\n";
 335                     $body_l = mb_strlen($body, "ASCII");
 336                     $ret = @fwrite($sock, $body);
 337                     if ($ret < $body_l) {
 338                         printf("TROUBLE WITH FWRITE: %d\n", $ret);
 339                         $user->rd_cache_set(mb_substr($body, $ret, $body_l - $ret, "ASCII"));
 340                     }
 341                     else {
 342                         $user->rd_cache_set("");
 343                     }
 344                     fflush($sock);
 345                     $user->rd_kalive_reset($curtime);
 346                 }
 347
 348                 // close socket after a while to prevent client memory consumption
 349                 if ($user->rd_endtime_is_expired($curtime)) {
 350                     // $user_a[$s2u[intval($sock)]]->disable();
 351                     if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 352                         $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 353                     }
 354                     unset($socks[intval($sock)]);
 355                     unset($s2u[intval($sock)]);
 356                     fclose($sock);
 357                     printf("CLOSE ON LOOP\n");
 358                 }
 359             }
 360         }
 361     }
 362
 363     exit(0);
 364 }
 365
 366 main();
 367 ?>