web/Obj/sac-a-push.phh

   1 <?php
   2
   3 /*
   4  *  brisk - spush/sac-a-push.phh
   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  */
  25
  26 define('SITE_PREFIX', '/brisk/');
  27 define('SITE_PREFIX_LEN', 7);
  28
  29 function spu_process_info($stream_info, $method, &$header, &$get, &$post, &$cookie)
  30 {
  31     $check_post = FALSE;
  32     $header = array();
  33     $get = array();
  34     $post = array();
  35     foreach(preg_split("/(\r?\n)/", $stream_info) as $line) {
  36         // printf("LINE: [%s]\n", $line);
  37         if ($check_post) {
  38             if (!isset($header['The-Request'])) {
  39                 return FALSE;
  40             }
  41             $req = explode(" ", $header['The-Request']);
  42             $method = $req[0];
  43
  44             if (isset($header['Cookie'])) {
  45                 $cookies = explode(";", $header['Cookie']);
  46                 for ($i = 0 ; $i < count($cookies) ; $i++) {
  47                     $nameval = explode("=", trim($cookies[$i]));
  48                     if (count($nameval) != 2) {
  49                         printf("WARNING: malformat cookie element [%s]\n", $cookies[$i]);
  50                         continue;
  51                     }
  52                     $cookie[$nameval[0]] = urldecode($nameval[1]);
  53                 }
  54             }
  55             // GET params management
  56             $get_vars = explode('?', $req[1], 2);
  57             $path =   $get_vars[0];
  58             if (count($get_vars) > 1) {
  59                 $a = explode('&', $get_vars[1]);
  60                 printf("A COUNT: [%s] %d\n", $a[0], count($a));
  61                 for ($i = 0 ; $i < count($a) ; $i++) {
  62                     $b = explode('=', $a[$i]);
  63                     $get[$b[0]] = urldecode($b[1]);
  64                 }
  65             }
  66             // POST params management
  67             if ($req[0] == 'POST') {
  68                 if ($header['Content-Type'] != 'application/x-www-form-urlencoded'
  69                     || !isset($header['Content-Length'])) {
  70                     return FALSE;
  71                 }
  72                 $post_len = mb_strlen($line, "latin1");
  73                 $a = explode('&', $line);
  74                 for ($i = 0 ; $i < count($a) ; $i++) {
  75                     $b = explode('=', $a[$i]);
  76                     $post[$b[0]] = urldecode($b[1]);
  77                 }
  78                 printf("INFO: postlen: %d\n", $post_len);
  79             }
  80             break;
  81         }
  82         if ($line == "") {
  83             $check_post = TRUE;
  84             continue;
  85         }
  86         $split = explode(":", $line, 2);
  87         $header[$split[0]] = $split[1];
  88     }
  89     return $path;
  90 }
  91
  92 function gpcs_var($name, $get, $post, $cookie)
  93 {
  94     if (isset($GLOBALS[$name]))
  95         return FALSE;
  96     else if (isset($cookie[$name]))
  97         return ($cookie[$name]);
  98     else if (isset($post[$name]))
  99         return ($post[$name]);
 100     else if (isset($get[$name]))
 101         return ($get[$name]);
 102
 103     return FALSE;
 104 }
 105
 106 function headers_render($header, $len)
 107 {
 108
 109     $s = "";
 110     $s .= "HTTP/1.1 200 OK\r\n";
 111     if (!isset($header['Date']))
 112         $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
 113     if (!isset($header['Connection']))
 114         $s .= "Connection: close\r\n";
 115     if (!isset($header['Content-Type']))
 116         $s .= "Content-Type: text/html\r\n";
 117     foreach($header as $key => $value) {
 118         $s .= sprintf("%s: %s\r\n", $key, $value);
 119     }
 120     if ($len == -1) {
 121         $s .= "Cache-Control: no-cache, must-revalidate\r\n";
 122         $s .= "Expires: Mon, 26 Jul 1997 05:00:00 GMT\r\n";
 123         $s .= "Content-Encoding: chunked\r\n";
 124         $s .= "Transfer-Encoding: chunked\r\n";
 125     }
 126     else if ($len > 0) {
 127         $s .= sprintf("Content-Length: %d\r\n", $len);
 128     }
 129     $s .= "\r\n";
 130
 131     return ($s);
 132 }
 133
 134 /*
 135  *  Caching system using ob php system to cache old style pages
 136  *  to a var and than send it with more calm
 137  */
 138
 139 function shutta()
 140 {
 141   log_rd2("SHUTTA [".connection_status()."] !");
 142 }
 143
 144 register_shutdown_function('shutta');
 145
 146 /*
 147  *  MAIN
 148  */
 149
 150 function chunked_content($content)
 151 {
 152     $content_l = mb_strlen($content, "ASCII");
 153
 154     return (sprintf("%X\r\n%s\r\n", $content_l, $content));
 155 }
 156
 157 function chunked_fini()
 158 {
 159     return sprintf("0\r\n");
 160 }
 161
 162 class Sac_a_push {
 163     static $fixed_fd = 2;
 164
 165     var $file_socket;
 166     var $unix_socket;
 167     var $socks;
 168     var $s2u;
 169     var $pages_flush;
 170
 171     var $list;
 172     var $in;
 173
 174     var $debug;
 175     var $blocking_mode;
 176
 177     var $app;
 178     var $bin5;
 179
 180     var $curtime;
 181
 182     var $rndstr;
 183     var $main_loop;
 184
 185     function Sac_a_push()
 186     {
 187     }
 188
 189     // Sac_a_push::create("/tmp/brisk.sock", 0, 0
 190
 191     static function create(&$app, $sockname, $debug, $blocking_mode)
 192     {
 193         $thiz = new Sac_a_push();
 194
 195         $thiz->app = $app;
 196         $thiz->file_socket = $sockname;
 197         $thiz->unix_socket = "unix://$sockname";
 198         $thiz->debug = $debug;
 199         $thiz->socks = array();
 200         $thiz->s2u  = array();
 201         $thiz->pages_flush = array();
 202
 203         $thiz->blocking_mode = 0; // 0 for non-blocking
 204
 205         $thiz->rndstr = "";
 206         for ($i = 0 ; $i < 4096 ; $i++) {
 207             $thiz->rndstr .= chr(mt_rand(65, 90));
 208         }
 209
 210         if (file_exists($thiz->file_socket)) {
 211             unlink($thiz->file_socket);
 212         }
 213
 214         $old_umask = umask(0);
 215         if (($thiz->list = stream_socket_server($thiz->unix_socket, $err, $errs)) === FALSE) {
 216             return (FALSE);
 217         }
 218         umask($old_umask);
 219         stream_set_blocking($thiz->list, $thiz->blocking_mode); # Set the stream to non-blocking
 220
 221         if (($thiz->in = fopen("php://stdin", "r")) === FALSE) {
 222             return(FALSE);
 223         }
 224
 225         $thiz->main_loop = FALSE;
 226
 227         return ($thiz);
 228     }
 229
 230     function socks_set($sock, $user)
 231     {
 232         $id = intval($sock);
 233
 234         $this->s2u[$id]   = $user;
 235         $this->socks[$id] = $sock;
 236     }
 237
 238     function socks_unset($sock)
 239     {
 240         $id = intval($sock);
 241
 242         unset($this->s2u[$id]);
 243         unset($this->socks[$id]);
 244     }
 245
 246     function pgflush_try_add(&$new_socket, $tout, $header_out, $content)
 247     {
 248         $pgflush = new PageFlush($new_socket, $this->curtime, $tout, $header_out, $content);
 249
 250         if ($pgflush->try_flush($this->curtime) == FALSE) {
 251             // Add $pgflush to the pgflush array
 252             $this->pgflush_add($pgflush);
 253         }
 254     }
 255
 256     function pgflush_add($pgflush)
 257     {
 258         array_push($this->pages_flush, $pgflush);
 259     }
 260
 261     function run()
 262     {
 263         if ($this->main_loop) {
 264             return (FALSE);
 265         }
 266
 267         $this->main_loop = TRUE;
 268
 269         while ($this->main_loop) {
 270             $this->curtime = time();
 271             printf("IN LOOP: Current opened: %d  pages_flush: %d - ", count($this->socks), count($this->pages_flush));
 272
 273             /* Prepare the read array */
 274             /* // when we manage it ... */
 275             /* if ($shutdown)  */
 276             /*     $read   = array_merge(array("$in" => $in), $socks); */
 277             /* else */
 278             $read   = array_merge(array(intval($this->list) => $this->list, intval($this->in) => $this->in),
 279                                   $this->socks);
 280
 281             if ($this->debug > 1) {
 282                 printf("PRE_SELECT\n");
 283                 print_r($read);
 284             }
 285             $write  = NULL;
 286             $except = NULL;
 287             $num_changed_sockets = stream_select($read, $write, $except, 0, 250000);
 288
 289             if ($num_changed_sockets == 0) {
 290                 printf(" no data in 5 secs ");
 291             }
 292             else if ($num_changed_sockets > 0) {
 293                 printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
 294                 if ($this->debug > 1) {
 295                     print_r($read);
 296                 }
 297                 /* At least at one of the sockets something interesting happened */
 298                 foreach ($read as $i => $sock) {
 299                     /* is_resource check is required because there is the possibility that
 300                        during new request an old connection is closed */
 301                     if (!is_resource($sock)) {
 302                         continue;
 303                     }
 304                     if ($sock === $this->list) {
 305                         printf("NUOVA CONNEX\n");
 306                         $new_unix = stream_socket_accept($this->list);
 307                         $stream_info = "";
 308                         $method      = "";
 309                         $get         = array();
 310                         $post        = array();
 311                         $cookie      = array();
 312                         if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
 313                             printf("NEW_SOCKET: %d\n", intval($new_socket));
 314                             stream_set_blocking($new_socket, $this->blocking_mode); // Set the stream to non-blocking
 315                             printf("RECEIVED HEADER:\n%s", $stream_info);
 316                             $path = spu_process_info($stream_info, $method, $header, $get, $post, $cookie);
 317                             printf("PATH: [%s]\n", $path);
 318                             printf("M: %s\nHEADER:\n", $method);
 319                             print_r($header);
 320                             printf("GET:\n");
 321                             print_r($get);
 322                             printf("POST:\n");
 323                             print_r($post);
 324                             printf("COOKIE:\n");
 325                             print_r($cookie);
 326
 327                             $addr = stream_socket_get_name($new_socket, TRUE);
 328                             $header_out = array();
 329
 330                             $subs = SITE_PREFIX."briskin5/";
 331                             $subs_l = strlen($subs);
 332                             $rret = FALSE;
 333                             if (!strncmp($path, SITE_PREFIX, SITE_PREFIX_LEN)) {
 334                                 $rret = $this->app->request_mgr($this, $header_out, $new_socket, substr($path, SITE_PREFIX_LEN), $addr, $get, $post, $cookie);
 335                             }
 336                             if ($rret == FALSE) {
 337                                 // FIXME: manage 404 !!!
 338                                 printf("TODO: fix unknown page\n");
 339                             }
 340                             printf("number of sockets after %d\n", count($this->socks));
 341                         }
 342                         else {
 343                             printf("WARNING: ancillary_getstream failed\n");
 344                         }
 345                     }
 346                     else {
 347                         if (($buf = fread($sock, 512)) === FALSE) {
 348                             printf("error read\n");
 349                         }
 350                         else if (strlen($buf) === 0) {
 351                             if ($sock === $this->list) {
 352                                 printf("Arrivati %d bytes da list\n", strlen($buf));
 353                             }
 354                             else if ($sock === $this->in) {
 355                                 printf("Arrivati %d bytes da stdin\n", strlen($buf));
 356                             }
 357                             else {
 358                                 // $user_a[$s2u[intval($sock)]]->disable();
 359                                 if ($this->s2u[intval($sock)]->rd_socket_get() != NULL) {
 360                                     $this->s2u[intval($sock)]->rd_socket_set(NULL);
 361                                 }
 362                                 unset($this->socks[intval($sock)]);
 363                                 unset($this->s2u[intval($sock)]);
 364                                 fclose($sock);
 365                                 printf("CLOSE ON READ\n");
 366                             }
 367                             if ($this->debug > 1) {
 368                                 printf("post unset\n");
 369                                 print_r($this->socks);
 370                             }
 371                         }
 372                         else {
 373                             if ($this->debug > 1) {
 374                                 print_r($read);
 375                             }
 376                             if ($sock === $this->list) {
 377                                 printf("Arrivati %d bytes da list\n", strlen($buf));
 378                             }
 379                             else if ($sock === $this->in) {
 380                                 printf("Arrivati %d bytes da stdin\n", strlen($buf));
 381                             }
 382                             else {
 383                                 $key = array_search("$sock", $this->socks);
 384                                 printf("Arrivati %d bytes dalla socket n. %d\n", strlen($buf), $key);
 385                             }
 386                         }
 387                     }
 388                 }
 389             }
 390
 391
 392             $this->app->garbage_manager(FALSE);
 393
 394
 395             /* manage unfinished pages */
 396             foreach ($this->pages_flush as $k => $pgflush) {
 397                 if ($pgflush->try_flush($this->curtime) == TRUE) {
 398                     unset($this->pages_flush[$k]);
 399                 }
 400             }
 401
 402             /* manage open streaming */
 403             foreach ($this->socks as $k => $sock) {
 404                 if (isset($this->s2u[intval($sock)])) {
 405                     $user = $this->s2u[intval($sock)];
 406                     $response = $user->rd_cache_get();
 407                     if (($this->curtime - $user->lacc) <= (EXPIRE_TIME_RD / 2)) {
 408                         $user->ping_req = FALSE;
 409                     }
 410                     if ($response == "") {
 411                         $content = "";
 412                         $user->stream_main($content, $get, $post, $cookie);
 413                         printf("[%s] [%d] [%d]\n", $user->name, $user->lacc, $this->curtime);
 414                         if ($content == "" && $user->ping_req == FALSE
 415                             && (($this->curtime - $user->lacc) > (EXPIRE_TIME_RD / 2))) {
 416                             $content = $user->stream_ping();
 417                             $user->ping_req = TRUE;
 418                         }
 419                         if ($content == "" && $user->rd_kalive_is_expired($this->curtime)) {
 420                             $content = $user->stream_keepalive();
 421                         }
 422                         if ($content != "") {
 423                             $response = chunked_content($content);
 424                         }
 425                     }
 426
 427                     if ($response != "") {
 428                         // echo "SPIA: [".substr($response, 0, 60)."...]\n";
 429                         echo "SPIA: [".$response."...]\n";
 430                         $response_l = mb_strlen($response, "ASCII");
 431                         $wret = @fwrite($sock, $response);
 432                         if ($wret < $response_l) {
 433                             printf("TROUBLE WITH FWRITE: %d\n", $wret);
 434                             $user->rd_cache_set(mb_substr($response, $wret, $response_l - $wret, "ASCII"));
 435                         }
 436                         else {
 437                             $user->rd_cache_set("");
 438                         }
 439                         fflush($sock);
 440                         $user->rd_kalive_reset($this->curtime);
 441                     }
 442
 443                     // close socket after a while to prevent client memory consumption
 444                     if ($user->rd_endtime_is_expired($this->curtime)) {
 445                         if ($this->s2u[intval($sock)]->rd_socket_get() != NULL) {
 446                             $this->s2u[intval($sock)]->rd_socket_set(NULL);
 447                         }
 448                         unset($this->socks[intval($sock)]);
 449                         unset($this->s2u[intval($sock)]);
 450                         fclose($sock);
 451                         printf("CLOSE ON LOOP\n");
 452                     }
 453                 }
 454             }  // foreach ($this->socks...
 455             printf("\n");
 456         }  // while (...
 457     }  // function run(...
 458 }
 459
 460 ?>