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  *   index_wr.php::chat
  26  *   index_wr.php::reload
  27  *   index_wr.php::exit
  28  *
  29  *   setcookie (for tables only)
  30  *   keepalive
  31  *   chunked
  32  *   BUG - after restart index_rd.php receive from prev clients a lot of req
  33  *   DONE/FROZEN - problema con getpeer (HOSTADDR)
  34  *
  35  *   DONE - index_rd.php porting
  36  *   DONE - generic var management from internet
  37  *   DONE - index.php auth part
  38  */
  39
  40 $G_base = "../";
  41
  42 require_once("./sac-a-push.phh");
  43 require_once("./brisk-spush.phh");
  44 require_once($G_base."Obj/brisk.phh");
  45 require_once($G_base."Obj/auth.phh");
  46 // require_once("../Obj/proxyscan.phh");
  47 require_once($G_base."index.php");
  48 require_once($G_base."index_wr.php");
  49 require_once($G_base."index_rd_ifra.php");
  50 require_once($G_base."briskin5/Obj/briskin5.phh");
  51
  52 define('SITE_PREFIX', '/brisk/');
  53
  54 class SPUser {
  55     var $id;
  56     var $sess;
  57     var $cnt;
  58     var $sock;
  59
  60     function SPUser($id)
  61     {
  62         $this->id = $id;
  63         $this->cnt = -1;
  64         $this->sock = NULL;
  65     }
  66
  67     function enable($sock, $sess)
  68     {
  69         $this->sess = $sess;
  70         $this->cnt = 0;
  71         $this->sock = $sock;
  72
  73         return ($this->id);
  74     }
  75
  76     function disable()
  77     {
  78         $this->cnt = -1;
  79         $this->sock = NULL;
  80     }
  81
  82     function is_enable()
  83     {
  84         return ($this->cnt < 0 ? FALSE : TRUE);
  85     }
  86
  87     function sock_get()
  88     {
  89         return $this->sock;
  90     }
  91
  92     function sock_set($sock)
  93     {
  94         $this->sock = $sock;
  95     }
  96
  97     function id_get()
  98     {
  99         return $this->id;
 100     }
 101
 102     function sess_get()
 103     {
 104         return $this->sess;
 105     }
 106
 107     function cnt_get()
 108     {
 109         return $this->cnt;
 110     }
 111
 112     function cnt_inc()
 113     {
 114         return $this->cnt++;
 115     }
 116 }
 117
 118 function user_get_free($user_arr)
 119 {
 120     foreach ($user_arr as $i => $user) {
 121         if (!$user->is_enable()) {
 122             return ($user);
 123         }
 124     }
 125     return FALSE;
 126 }
 127
 128 function user_get_sess($user_arr, $sess)
 129 {
 130     foreach ($user_arr as $i => $user) {
 131         printf("SESS: [%s]  cur: [%s]\n", $user->sess_get(), $sess);
 132         if ($user->sess_get() == $sess) {
 133             return ($user);
 134         }
 135     }
 136     return FALSE;
 137 }
 138
 139 function headers_render($header)
 140 {
 141
 142     $s = "";
 143     $s .= "HTTP/1.1 200 OK\r\n";
 144     if (!isset($header['Date']))
 145         $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
 146     if (!isset($header['Connection']))
 147         $s .= "Connection: close\r\n";
 148     if (!isset($header['Content-Type']))
 149         $s .= "Content-Type: text/html\r\n";
 150     foreach($header as $key => $value) {
 151         $s .= sprintf("%s: %s\r\n", $key, $value);
 152     }
 153     $s .= "Mop: was/here\r\n";
 154     $s .= "\r\n";
 155
 156     return ($s);
 157 }
 158
 159
 160 /*
 161  *  Caching system using ob php system to cache old style pages
 162  *  to a var and than send it with more calm
 163  */
 164 $G_headers = "";
 165
 166 function shutta()
 167 {
 168   log_rd2("SHUTTA [".connection_status()."] !");
 169 }
 170
 171 register_shutdown_function('shutta');
 172
 173 /*
 174  *  MAIN
 175  */
 176 $shutdown = FALSE;
 177
 178 function main()
 179 {
 180     GLOBAL $G_headers;
 181     GLOBAL $shutdown;
 182     $main_loop = TRUE;
 183
 184     /*
 185      *  INIT
 186      */
 187
 188     $FILE_SOCKET = "/tmp/brisk.sock";
 189     $UNIX_SOCKET = "unix://$FILE_SOCKET";
 190     $debug = 0;
 191     $fixed_fd = 2;
 192     $socks = array();
 193
 194     $blocking_mode = 0; // 0 for non-blocking
 195
 196     if (($room = Room::create()) == FALSE) {
 197         log_crit("load_data failed");
 198         return FALSE;
 199     }
 200
 201     $s2u  = array();
 202
 203     $rndstr = "";
 204     for ($i = 0 ; $i < 4096 ; $i++) {
 205         $rndstr .= chr(mt_rand(65, 90));
 206     }
 207
 208     if (file_exists($FILE_SOCKET)) {
 209         unlink($FILE_SOCKET);
 210     }
 211
 212     $old_umask = umask(0);
 213     if (($list = stream_socket_server($UNIX_SOCKET, $err, $errs)) === FALSE) {
 214         exit(11);
 215     }
 216     umask($old_umask);
 217
 218     if (($in = fopen("php://stdin", "r")) === FALSE) {
 219         exit(11);
 220     }
 221
 222     stream_set_blocking($list, $blocking_mode); # Set the stream to non-blocking
 223
 224     while ($main_loop) {
 225         echo "IN LOOP\n";
 226         /* Prepare the read array */
 227         if ($shutdown)
 228             $read   = array_merge(array("$in" => $in), $socks);
 229         else
 230             $read   = array_merge(array("$list" => $list, "$in" => $in), $socks);
 231
 232         if ($debug > 1) {
 233             printf("PRE_SELECT\n");
 234             print_r($read);
 235         }
 236         $write  = NULL;
 237         $except = NULL;
 238         $num_changed_sockets = stream_select($read, $write, $except, 1); // 0, 250000);
 239
 240         if ($num_changed_sockets === FALSE) {
 241             printf("No data in 5 secs");
 242         }
 243         else if ($num_changed_sockets > 0) {
 244             printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 245             if ($debug > 1) {
 246                 print_r($read);
 247             }
 248             /* At least at one of the sockets something interesting happened */
 249             foreach ($read as $i => $sock) {
 250                 if ($sock === $list) {
 251                     printf("NUOVA CONNEX\n");
 252                     $new_unix = stream_socket_accept($list);
 253                     $stream_info = "";
 254                     $method      = "";
 255                     $get         = array();
 256                     $post        = array();
 257                     $cookie      = array();
 258                     if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 259                         printf("RECEIVED HEADER:\n%s", $stream_info);
 260                         $path = spu_process_info($stream_info, $method, $header, $get, $post, $cookie);
 261                         printf("PATH: [%s]\n", $path);
 262                         printf("M: %s\nHEADER:\n", $method);
 263                         print_r($header);
 264                         printf("GET:\n");
 265                         print_r($get);
 266                         printf("POST:\n");
 267                         print_r($post);
 268                         printf("COOKIE:\n");
 269                         print_r($cookie);
 270
 271                         $addr = stream_socket_get_name($new_socket, TRUE);
 272
 273                         switch ($path) {
 274                         case SITE_PREFIX:
 275                         case SITE_PREFIX."index.php":
 276                             $header_out = array();
 277                             ob_start();
 278                             index_main($room, $header_out, $addr, $get, $post, $cookie);
 279                             $content = ob_get_contents();
 280                             ob_end_clean();
 281                             // printf("OUT: [%s]\n", $G_content);
 282                             fwrite($new_socket, headers_render($header_out).$content);
 283                             fclose($new_socket);
 284                             break;
 285                         case SITE_PREFIX."index_wr.php":
 286                             $header_out = array();
 287                             $addr = "";
 288                             // $ret = socket_getpeername($new_socket, $addr);
 289                             printf("RET: %s\n", $addr);
 290                             // exit(123);
 291                             ob_start();
 292                             index_wr_main($room, $addr, $get, $post, $cookie);
 293                             $content = ob_get_contents();
 294                             ob_end_clean();
 295
 296                             // printf("OUT: [%s]\n", $G_content);
 297                             fwrite($new_socket, headers_render($header_out).$content);
 298                             fclose($new_socket);
 299                             break;
 300                         case SITE_PREFIX."index_rd_ifra.php":
 301                             do {
 302                                 if (!isset($cookie['sess'])) {
 303                                     fclose($new_socket);
 304                                     break;
 305                                 }
 306                                 if (($user = $room->get_user($cookie['sess'], $idx)) == FALSE) {
 307                                     fclose($new_socket);
 308                                     break;
 309                                 }
 310                                 if (($prev = $user->rd_socket_get()) != NULL) {
 311                                     unset($s2u[intval($user->rd_socket_get())]);
 312                                     unset($socks[intval($user->rd_socket_get())]);
 313                                     fclose($user->rd_socket_get());
 314                                     $user->rd_socket_set(NULL);
 315                                 }
 316
 317                                 $header_out = array();
 318                                 $body = "";
 319                                 index_rd_ifra_init($room, $user, $header_out, $body, $get, $post, $cookie);
 320                                 stream_set_blocking($new_socket, $blocking_mode); // Set the stream to non-blocking
 321                                 fwrite($new_socket, headers_render($header_out).$body);
 322                                 fflush($new_socket);
 323
 324                                 $s2u[intval($new_socket)] = $idx;
 325                                 $socks[intval($new_socket)] = $new_socket;
 326                                 $user->rd_socket_set($new_socket);
 327                             } while (FALSE);
 328
 329                             break;
 330                         }
 331
 332
 333
 334
 335                         if (0 == 1) {
 336                             /* TODO: here stuff to decide if it is old or new user */
 337                             if (($user_cur = user_get_sess($user_a, $get['sess'])) != FALSE) {
 338                                 /* close the previous socket */
 339                                 unset($s2u[intval($user_cur->sock_get())]);
 340                                 unset($socks[intval($user_cur->sock_get())]);
 341                                 fclose($user_cur->sock_get());
 342                                 /* assign the new socket */
 343                                 $user_cur->sock_set($new_socket);
 344                                 $id = $user_cur->id_get();
 345                                 $s2u[intval($new_socket)] = $id;
 346                                 $socks[intval($new_socket)] = $new_socket;
 347                                 fwrite($new_socket, $rndstr);
 348                                 fflush($new_socket);
 349                             }
 350                             else if (($user_cur = user_get_free($user_a)) != FALSE) {
 351                                 stream_set_blocking($new_socket, $blocking_mode); // Set the stream to non-blocking
 352                                 $socks[intval($new_socket)] = $new_socket;
 353
 354                                 $id = $user_cur->id_get();
 355                                 $user_a[$id]->enable($new_socket, $get['sess']);
 356                                 printf("s2u: ci passo %d\n", intval($new_socket));
 357                                 $s2u[intval($new_socket)] = $id;
 358
 359                                 fwrite($new_socket, $rndstr);
 360                                 fflush($new_socket);
 361                             }
 362                             else {
 363                                 printf("Too many opened users\n");
 364                                 fclose($new_socket);
 365                             }
 366                         }
 367                     }
 368                     else {
 369                         printf("WARNING: ancillary_getstream failed\n");
 370                     }
 371                 }
 372                 else {
 373                     if (($buf = fread($sock, 512)) === FALSE) {
 374                         printf("error read\n");
 375                         exit(123);
 376                     }
 377                     else if (strlen($buf) === 0) {
 378                         if ($sock === $list) {
 379                             printf("Arrivati %d bytes da list\n", strlen($buf));
 380                         }
 381                         else if ($sock === $in) {
 382                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 383                         }
 384                         else {
 385                             // $user_a[$s2u[intval($sock)]]->disable();
 386                             if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 387                                 $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 388                             }
 389                             unset($socks[intval($sock)]);
 390                             unset($s2u[intval($sock)]);
 391                             fclose($sock);
 392                         }
 393                         if ($debug > 1) {
 394                             printf("post unset\n");
 395                             print_r($socks);
 396                         }
 397                     }
 398                     else {
 399                         if ($debug > 1) {
 400                             print_r($read);
 401                         }
 402                         if ($sock === $list) {
 403                             printf("Arrivati %d bytes da list\n", strlen($buf));
 404                         }
 405                         else if ($sock === $in) {
 406                             printf("Arrivati %d bytes da stdin\n", strlen($buf));
 407                         }
 408                         else {
 409                             $key = array_search("$sock", $socks);
 410                             printf("Arrivati %d bytes dalla socket n. %d\n", strlen($buf), $key);
 411                         }
 412                     }
 413                 }
 414             }
 415         }
 416
 417
 418
 419
 420         foreach ($socks as $k => $sock) {
 421             if (isset($s2u[intval($sock)])) {
 422                 $body = "";
 423
 424
 425                 $body = "";
 426                 $user = $room->user[$s2u[intval($sock)]];
 427                 index_rd_ifra_main($room, $user, $body);
 428                 if ($body == "" && $user->rd_tout_is_expired($curtime)) {
 429                     $body = index_rd_ifra_keepalive($user);
 430                 }
 431
 432                 if ($body != "") {
 433                     echo "SPIA: [".substr($body, 0, 60)."...]\n";
 434                     fwrite($sock, $body);
 435                     fflush($sock);
 436                     $user->rd_tout_reset($curtime);
 437                 }
 438
 439                 // close socket after a while to prevent client memory consumption
 440                 if ($user->rd_endtime_is_expired($curtime)) {
 441                     // $user_a[$s2u[intval($sock)]]->disable();
 442                     if ($room->user[$s2u[intval($sock)]]->rd_socket_get() != NULL) {
 443                         $room->user[$s2u[intval($sock)]]->rd_socket_set(NULL);
 444                     }
 445                     unset($socks[intval($sock)]);
 446                     unset($s2u[intval($sock)]);
 447                     fclose($sock);
 448                 }
 449             }
 450         }
 451     }
 452
 453     exit(0);
 454 }
 455
 456 main();
 457 ?>