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  *   - from room to table
  28  *   - from table to room
  29  *   - fwrite other issues
  30  *   - manage and test cross forwarder between table and room
  31  *   - setcookie (for tables only)
  32  *   - keepalive management
  33  *   - chunked
  34  *
  35  *   DONE/FROZEN - problema con getpeer (HOSTADDR)
  36  *
  37  *   DONE - index_rd_ifra: last_clean issue
  38  *   DONE - fwrite failed error management (select, buffer where store unsent data, and fwrite check and retry)
  39  *   ABRT - index_wr.php::reload - reload is js-only function
  40  *   DONE - bug: after restart index_rd.php receive from prev clients a lot of req
  41  *   DONE - index_wr.php::chat
  42  *   DONE - index_wr.php::exit
  43  *   DONE - index_rd.php porting
  44  *   DONE - generic var management from internet
  45  *   DONE - index.php auth part
  46  */
  47
  48 $G_base = "../";
  49
  50 require_once("./sac-a-push.phh");
  51 require_once("./brisk-spush.phh");
  52 require_once($G_base."Obj/brisk.phh");
  53 require_once($G_base."Obj/auth.phh");
  54 // require_once("../Obj/proxyscan.phh");
  55 require_once($G_base."index.php");
  56 require_once($G_base."index_wr.php");
  57 require_once($G_base."index_rd_ifra.php");
  58 require_once($G_base."briskin5/Obj/briskin5.phh");
  59
  60 define('SITE_PREFIX', '/brisk/');
  61
  62 function headers_render($header)
  63 {
  64
  65     $s = "";
  66     $s .= "HTTP/1.1 200 OK\r\n";
  67     if (!isset($header['Date']))
  68         $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
  69     if (!isset($header['Connection']))
  70         $s .= "Connection: close\r\n";
  71     if (!isset($header['Content-Type']))
  72         $s .= "Content-Type: text/html\r\n";
  73     foreach($header as $key => $value) {
  74         $s .= sprintf("%s: %s\r\n", $key, $value);
  75     }
  76     $s .= "Mop: was/here\r\n";
  77     $s .= "\r\n";
  78
  79     return ($s);
  80 }
  81
  82 /*
  83  *  Caching system using ob php system to cache old style pages
  84  *  to a var and than send it with more calm
  85  */
  86 $G_headers = "";
  87
  88 function shutta()
  89 {
  90   log_rd2("SHUTTA [".connection_status()."] !");
  91 }
  92
  93 register_shutdown_function('shutta');
  94
  95 /*
  96  *  MAIN
  97  */
  98 $shutdown = FALSE;
  99
 100 function main()
 101 {
 102     GLOBAL $G_headers;
 103     GLOBAL $shutdown;
 104     $main_loop = TRUE;
 105
 106     /*
 107      *  INIT
 108      */
 109
 110     $FILE_SOCKET = "/tmp/brisk.sock";
 111     $UNIX_SOCKET = "unix://$FILE_SOCKET";
 112     $debug = 0;
 113     $fixed_fd = 2;
 114     $socks = array();
 115
 116     $blocking_mode = 0; // 0 for non-blocking
 117
 118     if (($room = Room::create()) == FALSE) {
 119         log_crit("load_data failed");
 120         return FALSE;
 121     }
 122
 123     $s2u  = array();
 124
 125     $rndstr = "";
 126     for ($i = 0 ; $i < 4096 ; $i++) {
 127         $rndstr .= chr(mt_rand(65, 90));
 128     }
 129
 130     if (file_exists($FILE_SOCKET)) {
 131         unlink($FILE_SOCKET);
 132     }
 133
 134     $old_umask = umask(0);
 135     if (($list = stream_socket_server($UNIX_SOCKET, $err, $errs)) === FALSE) {
 136         exit(11);
 137     }
 138     umask($old_umask);
 139
 140     if (($in = fopen("php://stdin", "r")) === FALSE) {
 141         exit(11);
 142     }
 143
 144     stream_set_blocking($list, $blocking_mode); # Set the stream to non-blocking
 145
 146     while ($main_loop) {
 147         $curtime = time();
 148         printf("IN LOOP: Current opened: %d\n", count($socks));
 149
 150         /* Prepare the read array */
 151         if ($shutdown)
 152             $read   = array_merge(array("$in" => $in), $socks);
 153         else
 154             $read   = array_merge(array("$list" => $list, "$in" => $in), $socks);
 155
 156         if ($debug > 1) {
 157             printf("PRE_SELECT\n");
 158             print_r($read);
 159         }
 160         $write  = NULL;
 161         $except = NULL;
 162         $num_changed_sockets = stream_select($read, $write, $except, 0, 250000);
 163
 164         if ($num_changed_sockets === FALSE) {
 165             printf("No data in 5 secs");
 166         }
 167         else if ($num_changed_sockets > 0) {
 168             printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 169             if ($debug > 1) {
 170                 print_r($read);
 171             }
 172             /* At least at one of the sockets something interesting happened */
 173             foreach ($read as $i => $sock) {
 174                 if ($sock === $list) {
 175                     printf("NUOVA CONNEX\n");
 176                     $new_unix = stream_socket_accept($list);
 177                     $stream_info = "";
 178                     $method      = "";
 179                     $get         = array();
 180                     $post        = array();
 181                     $cookie      = array();
 182                     if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 183                         stream_set_blocking($new_socket, $blocking_mode); // Set the stream to non-blocking
 184                         printf("RECEIVED HEADER:\n%s", $stream_info);
 185                         $path = spu_process_info($stream_info, $method, $header, $get, $post, $cookie);
 186                         printf("PATH: [%s]\n", $path);
 187                         printf("M: %s\nHEADER:\n", $method);
 188                         print_r($header);
 189                         printf("GET:\n");
 190                         print_r($get);
 191                         printf("POST:\n");
 192                         print_r($post);
 193                         printf("COOKIE:\n");
 194                         print_r($cookie);
 195
 196                         $addr = stream_socket_get_name($new_socket, TRUE);
 197
 198                         switch ($path) {
 199                         case SITE_PREFIX:
 200                         case SITE_PREFIX."index.php":
 201                             $header_out = array();
 202                             ob_start();
 203                             index_main($room, $header_out, $addr, $get, $post, $cookie);
 204                             $content = ob_get_contents();
 205                             ob_end_clean();
 206                             $content_sz = mb_strlen($content, "LATIN1");
 207                             $hea = headers_render($header_out);
 208
 209                             // TODO: FIX THIS PART TO A SPAWN WRITE AS CUEUE.
 210                             printf("OUT: [%d]\n", $content_sz);
 211                             for ($w = 0 ; $w < 10 ; $w++) {
 212                                 if (($wret = fwrite($new_socket, $content, $content_sz)) == $content_sz
 213                                     || $wret <= 0)
 214                                     break;
 215                                 printf("wret: [%d]\n", $wret);
 216                                 $content = substr($content, $wret, $content_sz - $wret);
 217                                 usleep(100000);
 218                             }
 219                             fclose($new_socket);
 220                             break;
 221                         case SITE_PREFIX."index_wr.php":
 222                             $header_out = array();
 223                             $addr = "";
 224                             // $ret = socket_getpeername($new_socket, $addr);
 225                             printf("RET: %s\n", $addr);
 226                             // exit(123);
 227                             ob_start();
 228                             index_wr_main($room, $addr, $get, $post, $cookie);
 229                             $content = ob_get_contents();
 230                             ob_end_clean();
 231
 232                             // printf("OUT: [%s]\n", $G_content);
 233                             fwrite($new_socket, headers_render($header_out).$content);
 234                             fclose($new_socket);
 235                             break;
 236                         case SITE_PREFIX."index_rd_ifra.php":
 237                             do {
 238                                 $header_out = array();
 239                                 if (!isset($cookie['sess'])
 240                                     || (($user = $room->get_user($cookie['sess'], $idx)) == FALSE)) {
 241                                     $body = index_rd_ifra_fini(TRUE);
 242                                     fwrite($new_socket, headers_render($header_out).$body);
 243                                     fflush($new_socket);
 244                                     fclose($new_socket);
 245                                     break;
 246                                 }
 247                                 // close a previous opened index_read_ifra socket, if exists
 248                                 if (($prev = $user->rd_socket_get()) != NULL) {
 249                                     unset($s2u[intval($user->rd_socket_get())]);
 250                                     unset($socks[intval($user->rd_socket_get())]);
 251                                     fclose($user->rd_socket_get());
 252                                     printf("CLOSE AND OPEN AGAIN ON IFRA2\n");
 253                                     $user->rd_socket_set(NULL);
 254                                 }
 255
 256                                 $body = "";
 257                                 index_rd_ifra_init($room, $user, $header_out, $body, $get, $post, $cookie);
 258                                 fwrite($new_socket, headers_render($header_out).$body);
 259                                 fflush($new_socket);
 260
 261                                 $s2u[intval($new_socket)] = $idx;
 262                                 $socks[intval($new_socket)] = $new_socket;
 263                                 $user->rd_socket_set($new_socket);
 264                             } while (FALSE);
 265
 266                             break;
 267                         }
 268                     }
 269                     else {
 270                         printf("WARNING: ancillary_getstream failed\n");
 271                     }
 272                 }
 273                 else {
 274                     if (($buf = fread($sock, 512)) === FALSE) {
 275                         printf("error read\n");
 276                         exit(123);
 277                     }
 278                     else if (strlen($buf) === 0) {
 279                         if ($sock === $list) {
 280                             printf("Arrivati %d bytes da list\n", strlen($buf));
 281                         }
 282                         else if ($sock === $in) {
 283                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 284                         }
 285                         else {
 286                             // $user_a[$s2u[intval($sock)]]->disable();
 287                             if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 288                                 $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 289                             }
 290                             unset($socks[intval($sock)]);
 291                             unset($s2u[intval($sock)]);
 292                             fclose($sock);
 293                             printf("CLOSE ON READ\n");
 294                         }
 295                         if ($debug > 1) {
 296                             printf("post unset\n");
 297                             print_r($socks);
 298                         }
 299                     }
 300                     else {
 301                         if ($debug > 1) {
 302                             print_r($read);
 303                         }
 304                         if ($sock === $list) {
 305                             printf("Arrivati %d bytes da list\n", strlen($buf));
 306                         }
 307                         else if ($sock === $in) {
 308                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 309                         }
 310                         else {
 311                             $key = array_search("$sock", $socks);
 312                             printf("Arrivati %d bytes dalla socket n. %d\n", strlen($buf), $key);
 313                         }
 314                     }
 315                 }
 316             }
 317         }
 318
 319         foreach ($socks as $k => $sock) {
 320             if (isset($s2u[intval($sock)])) {
 321                 $user = $room->user[$s2u[intval($sock)]];
 322                 $body = $user->rd_cache_get();
 323                 if ($body == "")
 324                     index_rd_ifra_main($room, $user, $body);
 325
 326                 if ($body == "" && $user->rd_kalive_is_expired($curtime)) {
 327                     $body = index_rd_ifra_keepalive($user);
 328                 }
 329
 330                 if ($body != "") {
 331                     echo "SPIA: [".substr($body, 0, 60)."...]\n";
 332                     $body_l = mb_strlen($body, "LATIN1");
 333                     $ret = @fwrite($sock, $body);
 334                     if ($ret < $body_l) {
 335                         printf("TROUBLE WITH FWRITE: %d\n", $ret);
 336                         $user->rd_cache_set(mb_substr($body, $ret, $body_l - $ret, "LATIN1"));
 337                     }
 338                     else {
 339                         $user->rd_cache_set("");
 340                     }
 341                     fflush($sock);
 342                     $user->rd_kalive_reset($curtime);
 343                 }
 344
 345                 // close socket after a while to prevent client memory consumption
 346                 if ($user->rd_endtime_is_expired($curtime)) {
 347                     // $user_a[$s2u[intval($sock)]]->disable();
 348                     if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 349                         $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 350                     }
 351                     unset($socks[intval($sock)]);
 352                     unset($s2u[intval($sock)]);
 353                     fclose($sock);
 354                     printf("CLOSE ON LOOP\n");
 355                 }
 356             }
 357         }
 358     }
 359
 360     exit(0);
 361 }
 362
 363 main();
 364 ?>