502670d9ceab8d86d368efa5c374d42e3e000414
[brisk.git] / web / Obj / sac-a-push.phh
1 <?php
2 /*
3  *  brisk - Obj/sac-a-push.phh
4  *
5  *  Copyright (C) 2012 Matteo Nastasi
6  *                          mailto: nastasi@alternativeoutput.it 
7  *                                  matteo.nastasi@milug.org
8  *                          web: http://www.alternativeoutput.it
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful, but
16  * WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * General Public License for more details. You should have received a
19  * copy of the GNU General Public License along with this program; if
20  * not, write to the Free Software Foundation, Inc, 59 Temple Place -
21  * Suite 330, Boston, MA 02111-1307, USA.
22  *
23  */
24
25 define('SITE_PREFIX', '/brisk/');
26 define('SITE_PREFIX_LEN', 7);
27
28 declare(ticks = 1);
29
30 function global_dump()
31 {
32     GLOBAL $G_alarm_passwd, $G_black_list, $G_btrace_pref_sub, $G_dbauth;
33     GLOBAL $G_dbpfx, $G_donors_all, $G_donors_cur, $G_is_local, $G_lang;
34     GLOBAL $G_poll_entries, $G_poll_name, $G_poll_title, $G_proxy_white_list;
35     GLOBAL $G_room_roadmap, $G_shutdown, $G_sidebanner, $G_sidebanner2;
36     GLOBAL $G_splash_content, $G_splash_contents, $G_splash_cont_idx;
37     GLOBAL $G_splash_h, $G_splash_idx, $G_splash_interval, $G_splash_timeout;
38     GLOBAL $G_splash_w, $G_topbanner, $G_with_donors, $G_with_poll;
39     GLOBAL $G_with_sidebanner, $G_with_sidebanner2, $G_with_splash;
40     GLOBAL $G_with_topbanner;
41
42     fprintf(STDERR, "G_alarm_passwd = [%s]\n", print_r($G_alarm_passwd, TRUE));
43     fprintf(STDERR, "G_black_list = [%s]\n", print_r($G_black_list, TRUE));
44     fprintf(STDERR, "G_btrace_pref_sub = [%s]\n", print_r($G_btrace_pref_sub, TRUE));
45     fprintf(STDERR, "G_dbauth = [%s]\n", print_r($G_dbauth, TRUE));
46     fprintf(STDERR, "G_dbpfx = [%s]\n", print_r($G_dbpfx, TRUE));
47     fprintf(STDERR, "G_donors_all = [%s]\n", print_r($G_donors_all, TRUE));
48     fprintf(STDERR, "G_donors_cur = [%s]\n", print_r($G_donors_cur, TRUE));
49     fprintf(STDERR, "G_is_local = [%s]\n", print_r($G_is_local, TRUE));
50     fprintf(STDERR, "G_lang = [%s]\n", print_r($G_lang, TRUE));
51     fprintf(STDERR, "G_poll_entries = [%s]\n", print_r($G_poll_entries, TRUE));
52     fprintf(STDERR, "G_poll_name = [%s]\n", print_r($G_poll_name, TRUE));
53     fprintf(STDERR, "G_poll_title = [%s]\n", print_r($G_poll_title, TRUE));
54     fprintf(STDERR, "G_proxy_white_list = [%s]\n", print_r($G_proxy_white_list, TRUE));
55     fprintf(STDERR, "G_room_roadmap = [%s]\n", print_r($G_room_roadmap, TRUE));
56     fprintf(STDERR, "G_shutdown = [%s]\n", print_r($G_shutdown, TRUE));
57     fprintf(STDERR, "G_sidebanner = [%s]\n", print_r($G_sidebanner, TRUE));
58     fprintf(STDERR, "G_sidebanner2 = [%s]\n", print_r($G_sidebanner2, TRUE));
59     fprintf(STDERR, "G_splash_content = [%s]\n", print_r($G_splash_content, TRUE));
60     fprintf(STDERR, "G_splash_contents = [%s]\n", print_r($G_splash_contents, TRUE));
61     fprintf(STDERR, "G_splash_cont_idx = [%s]\n", print_r($G_splash_cont_idx, TRUE));
62     fprintf(STDERR, "G_splash_h = [%s]\n", print_r($G_splash_h, TRUE));
63     fprintf(STDERR, "G_splash_idx = [%s]\n", print_r($G_splash_idx, TRUE));
64     fprintf(STDERR, "G_splash_interval = [%s]\n", print_r($G_splash_interval, TRUE));
65     fprintf(STDERR, "G_splash_timeout = [%s]\n", print_r($G_splash_timeout, TRUE));
66     fprintf(STDERR, "G_splash_w = [%s]\n", print_r($G_splash_w, TRUE));
67     fprintf(STDERR, "G_topbanner = [%s]\n", print_r($G_topbanner, TRUE));
68     fprintf(STDERR, "G_with_donors = [%s]\n", print_r($G_with_donors, TRUE));
69     fprintf(STDERR, "G_with_poll = [%s]\n", print_r($G_with_poll, TRUE));
70     fprintf(STDERR, "G_with_sidebanner = [%s]\n", print_r($G_with_sidebanner, TRUE));
71     fprintf(STDERR, "G_with_sidebanner2 = [%s]\n", print_r($G_with_sidebanner2, TRUE));
72     fprintf(STDERR, "G_with_splash = [%s]\n", print_r($G_with_splash, TRUE));
73     fprintf(STDERR, "G_with_topbanner = [%s]\n", print_r($G_with_topbanner, TRUE));
74 }
75
76 function pid_save()
77 {
78     $pid = getmypid();
79     $fname = LEGAL_PATH."/brisk.pid";
80
81     if (file_exists($fname)) {
82         log_crit("WARN: brisk.pid already exists");
83     }
84     file_put_contents($fname, sprintf("%d\n", $pid));
85 }
86
87 function pid_remove()
88 {
89     $fname = LEGAL_PATH."/brisk.pid";
90
91     if (file_exists($fname)) {
92         unlink($fname);
93     }
94 }
95
96 function post_manage(&$post, $line)
97 {
98     $a = explode('&', $line);
99     for ($i = 0 ; $i < count($a) ; $i++) {
100         $b = explode('=', $a[$i]);
101         if (isset($b[0])) {
102             if (isset($b[1])) {
103                 $post[$b[0]] = urldecode($b[1]);
104             }
105             else {
106                 $post[$b[0]] = "";
107             }
108         }
109     }
110 }
111
112 function spu_process_info($stream_info, &$method, &$header, &$get, &$post, &$cookie, &$rest, &$cont)
113 {
114     $check_post = FALSE;
115     $header = array();
116     $get = array();
117     $post = array();
118     $rest = 0;
119     foreach(preg_split("/(\r?\n)/", $stream_info) as $line) {
120         printf("LINE: [%s]\n", $line);
121         if ($check_post) {
122             if (!isset($header['The-Request'])) {
123                 return FALSE;
124             }
125             $req = explode(" ", $header['The-Request']);
126             $method = $req[0];
127
128             if (isset($header['Cookie'])) {
129
130                 // LINE: [Cookie:sess=50e053a9511ef; CO_splashdate4=1356420646; CO_list=all; table_idx=7; table_token=510d494986925; lang=it; CO_bin5_pref_ring_endauct=false; CO_splashdate5=1358372822; CO_splashdate1=1363203374; CO_splashdate2=1363374826; __utma=43654517.209888411.1356605271.1356605271.1356605271.1; __utmz=43654517.1356605271.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)]
131
132                 $cookies = explode("; ", $header['Cookie']);
133                 for ($i = 0 ; $i < count($cookies) ; $i++) {
134                     $name = mb_strstr($cookies[$i], "=", TRUE, 'UTF-8');
135                     if ($name == FALSE) {
136                         if (mb_strlen($cookies[$i]) > 0) {
137                             $cookie[$cookies[$i]] = "";
138                         }
139                         else {
140                             printf("WARNING: malformat cookie element [%s]\n", $cookies[$i]);
141                         }
142                         continue;
143                     }
144
145                     $value = mb_substr($cookies[$i], mb_strlen($name)+1, 10140, 'UTF-8');
146                     $cookie[$name] = urldecode($value);
147                 }
148             }
149             // GET params management
150             $get_vars = explode('?', $req[1], 2);
151             $path = $get_vars[0];
152             if (count($get_vars) > 1) {
153                 $a = explode('&', $get_vars[1]);
154                 printf("A COUNT: [%s] %d\n", $a[0], count($a));
155                 for ($i = 0 ; $i < count($a) ; $i++) {
156                     $b = explode('=', $a[$i]);
157                     $get[$b[0]] = urldecode($b[1]);
158                 }
159             }
160             // POST params management
161             if ($req[0] == 'POST') {
162                 $conttype_all = explode(";", $header['Content-Type']);
163                 $header['Content-Type'] = $conttype_all[0];
164                 // $path_all[1-] other things like charset and so on
165
166                 // if (content-type is wrong || content-length isn't set)
167                 //     return false
168
169                 if ($header['Content-Type'] != 'application/x-www-form-urlencoded' 
170                     || !isset($header['Content-Length'])) {
171                     return FALSE;
172                 }
173                 $post_len = mb_strlen($line, "ASCII");
174                 printf("INFO: postlen: %d\n", $post_len);
175                 $rest = (int)($header['Content-Length']) - $post_len;
176
177                 if ($rest == 0) {
178                     post_manage($post, $line);
179                 }
180                 else {
181                     $cont = $line;
182                 }
183             }
184             break;
185         }
186         if ($line == "") {
187             $check_post = TRUE;
188             continue;
189         }
190         $split = explode(":", $line, 2);
191         $hea_id = trim(mb_convert_case($split[0], MB_CASE_TITLE, 'UTF-8'));
192         $header[$hea_id] = $split[1];
193     }
194     return $path;
195 }
196
197 function gpcs_var($name, $get, $post, $cookie)
198 {
199     if (isset($GLOBALS[$name])) 
200         return FALSE;
201     else if (isset($cookie[$name])) 
202         return ($cookie[$name]);
203     else if (isset($post[$name])) 
204         return ($post[$name]);
205     else if (isset($get[$name])) 
206         return ($get[$name]);
207
208     return FALSE;
209 }
210
211 function headers_render($header, $len)
212 {
213     $cookies = "";
214
215     if (isset($header['cookies'])) {
216         $cookies = $header['cookies']->render();
217         unset($header['cookies']);
218     }
219     if (isset($header['Location'])) {
220         $s = sprintf("HTTP/1.1 302 OK\r\n%sLocation: %s\r\n", $cookies, $header['Location']);
221     }
222     else if (isset($header['HTTP-Response'])) {
223         $s = sprintf("HTTP/1.1 %s\r\n", $header['HTTP-Response']);
224     }
225     else {
226         $s = "HTTP/1.1 200 OK\r\n";
227
228         if (!isset($header['Date']))
229             $s .= sprintf("Date: %s\r\n", date(DATE_RFC822));
230         if (!isset($header['Connection']))
231             $s .= "Connection: close\r\n";
232         if (!isset($header['Content-Type']))
233             $s .= "Content-Type: text/html\r\n";
234         foreach($header as $key => $value) {
235             $s .= sprintf("%s: %s\r\n", $key, $value);
236         }
237         if ($len >= 0) {
238             $s .= sprintf("Content-Length: %d\r\n", $len);
239         }
240         else {
241             $s .= "Cache-Control: no-cache, must-revalidate\r\n";
242             $s .= "Expires: Mon, 26 Jul 1997 05:00:00 GMT\r\n";
243             if (!isset($header['Content-Encoding'])) {
244                 $s .= "Content-Encoding: chunked\r\n";
245             }
246             $s .= "Transfer-Encoding: chunked\r\n";
247         }
248         $s .= $cookies;
249     }
250     $s .= "\r\n";
251
252     return ($s);
253 }
254
255 /*
256  *  Caching system using ob php system to cache old style pages
257  *  to a var and than send it with more calm
258  */
259
260 function shutta()
261 {
262   log_rd2("SHUTTA [".connection_status()."] !");
263 }
264
265 register_shutdown_function('shutta');
266
267 /*
268  *  MAIN
269  */
270
271 function get_encoding($header)
272 {
273     $enc = "plain";
274     if (isset($header['Accept-Encoding'])) {
275         $acc = explode(',', $header['Accept-Encoding']);
276
277         if (array_search('gzip', $acc) !== FALSE) {
278             $enc = 'gzip';
279         }
280         else if (array_search('deflate', $acc) !== FALSE) {
281             $enc = 'deflate';
282         }
283     }
284
285     return ($enc);
286 }
287
288 class Cookie {
289     var $attr;
290     // Set-Cookie: reg_fb_gate=deleted; Expires=Thu, 01-Jan-1970 00:00:01 GMT; Path=/; Domain=.foo.com; HttpOnly
291     // string $name  [, string $value  [, int $expire = 0  [, string $path  [, string $domain  [, bool $secure = false  [, bool $httponly = false  ]]]]]] )
292     function Cookie()
293     {
294         $this->attr = array();
295     }
296
297     static function create($name)
298     {
299         $thiz = new Cookie();
300
301         $thiz->attr[$name] = "";
302
303         $argc = func_num_args();
304         for ($i = 1 ; $i < $argc ; $i++) {
305             $arg = func_get_arg($i);
306             switch ($i) {
307             case 1:
308                 $thiz->attr[$name] = urlencode($arg);
309                 break;
310             case 2:
311                 $thiz->attr['Expires'] = gmdate('D, d M Y H:i:s \G\M\T', $arg); // RFC 1211 format
312                 break;
313             case 3:
314                 $thiz->attr['Path'] = $arg;
315                 break;
316             case 4:
317                 $thiz->attr['Domain'] = $arg;
318                 break;
319             case 5:
320                 if ($arg == TRUE) {
321                     $thiz->attr['Secure'] = NULL;
322                 }
323                 break;
324             case 6:
325                 if ($arg == TRUE) {
326                     $thiz->attr['HttpOnly'] = NULL;
327                 }
328                 break;
329             default:
330                 return FALSE;
331             }
332         }
333
334         return $thiz;
335     }
336
337     function render()
338     {
339         $r = "Set-Cookie: ";
340         $isfirst = TRUE;
341
342         foreach ($this->attr as $k => $v) {
343             if ($v == NULL) {
344                 $r .= sprintf("%s%s", ($isfirst ? "" : "; "), $k);
345             }
346             else {
347                 $r .= sprintf("%s%s=%s", ($isfirst ? "" : "; "), $k, $v);
348             }
349             $isfirst = FALSE;
350         }
351         $r .= "\r\n";
352
353         return $r;
354     }
355 }
356
357 class Cookies {
358     var $cookies;
359
360     function Cookies()
361     {
362         $this->cookies = array();
363     }
364
365     function add($name)
366     {
367         if (($cookie = call_user_func_array("Cookie::create", func_get_args())) == FALSE)
368             return (FALSE);
369
370         array_push($this->cookies, $cookie);
371
372         return (TRUE);
373     }
374
375     function render()
376     {
377         $r = "";
378         foreach ($this->cookies as $cookie) {
379             $r .= $cookie->render();
380         }
381
382         return ($r);
383     }
384 }
385
386
387 class Sac_a_push {
388     // maybe fixed_fd is unuseful
389     static $fixed_fd = 3;
390     static $cnt_master = NULL;
391     static $cnt_slave  = NULL;
392     
393     var $file_socket;
394     var $unix_socket;
395     var $socks;
396     var $s2u;             // user associated with input socket
397     var $s2p;             // pending page associated with input socket
398     var $pending_pages;
399
400     var $list;
401     var $in;
402
403     var $debug;
404     var $blocking_mode;
405
406     var $app;
407
408     var $curtime;
409
410     var $rndstr;
411     var $main_loop;
412
413     function Sac_a_push()
414     {
415     }
416
417     function sig_handler($sig)
418     {
419         switch ($sig) {
420         case SIGINT:
421             exit(1);
422             break;
423         case SIGTERM:
424             if (static::$cnt_master != NULL) {
425                     fwrite(static::$cnt_master, "\nshutdown\n");
426                     fflush(static::$cnt_master);
427             }
428             else {
429                 exit(1);
430             }
431             break;
432         case SIGHUP: 
433             if (static::$cnt_master != NULL) {
434                 fwrite(static::$cnt_master, "\nreload\n");
435                 fflush(static::$cnt_master);
436             }
437             break;
438         }
439     }
440
441     static function create(&$app, $sockname, $debug, $blocking_mode)
442     {        
443         $thiz = new Sac_a_push();
444         
445         $thiz->app = $app;
446         $thiz->file_socket = $sockname;
447         $thiz->unix_socket = "unix://$sockname";
448         $thiz->debug = $debug;
449         $thiz->socks = array();
450         $thiz->s2u  = array();
451         $thiz->s2p  = array();
452         $thiz->pending_pages = array();
453
454         // create a couple of sockets for control management
455         if (($sockpair = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM,
456                                             STREAM_IPPROTO_IP)) == FALSE) {
457             return FALSE;
458         }
459         static::$cnt_master = $sockpair[0];
460         static::$cnt_slave  = $sockpair[1];
461
462         pcntl_signal(SIGTERM, array("Sac_a_push", "sig_handler"));
463         pcntl_signal(SIGINT, array("Sac_a_push", "sig_handler"));
464         pcntl_signal(SIGHUP, array("Sac_a_push", "sig_handler"));
465
466         $thiz->blocking_mode = 0; // 0 for non-blocking
467
468         $thiz->rndstr = "";
469         for ($i = 0 ; $i < 4096 ; $i++) {
470             if (($i % 128) == 0)
471                 $thiz->rndstr .= " ";
472             else
473                 $thiz->rndstr .= chr(mt_rand(65, 90));
474         }
475         
476         if (file_exists($thiz->file_socket)) {
477             unlink($thiz->file_socket);
478         }
479     
480         $old_umask = umask(0);
481         if (($thiz->list = stream_socket_server($thiz->unix_socket, $err, $errs)) === FALSE) {
482             return (FALSE);
483         }
484         umask($old_umask);
485         stream_set_blocking($thiz->list, $thiz->blocking_mode); # Set the stream to non-blocking
486
487         if (($thiz->in = fopen("php://stdin", "r")) === FALSE) {
488             return(FALSE);
489         }
490
491         $thiz->main_loop = FALSE;
492
493         return ($thiz);
494     }
495
496     function socks_set($sock, $user, $pendpage)
497     {
498         $id = intval($sock);
499
500         $this->socks[$id] = $sock;
501         if ($user != NULL)
502             $this->s2u[$id]   = $user;
503         if ($pendpage != NULL)
504             $this->s2p[$id]   = $pendpage;
505     }
506
507     function socks_unset($sock)
508     {
509         $id = intval($sock);
510
511         if (isset($this->s2u[$id]))
512             unset($this->s2u[$id]);
513         if (isset($this->s2p[$id]))
514             unset($this->s2p[$id]);
515         unset($this->socks[$id]);
516     }
517
518     function pendpage_try_addcont(&$new_socket, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont)
519     {
520         $pendpage = PendingPage::pendingpage_continue(&$new_socket, $this->curtime, $tout, $method,
521                                                            $header,           $get, $post, $cookie,
522                                                              $path,          $addr, $rest, $cont);
523
524         $pendpage->try_flush($this->curtime);
525         // Add $pendpage to the pendpage array (in any case)
526         fprintf(STDERR, "IMPORTANT: Pendadd: %d\n", $pendpage->status);
527         $this->pendpage_add($pendpage);
528     }
529
530     function pendpage_try_addflush(&$new_socket, $tout, $enc, $header_out, $content)
531     {
532         $pendpage = PendingPage::pendingpage_flushing($new_socket, $this->curtime, $tout, $enc, $header_out, $content);
533
534         if ($pendpage->try_flush($this->curtime) == FALSE) {
535             // Add $pendpage to the pendpage array
536             $this->pendpage_add($pendpage);
537         }
538     }
539
540     function pendpage_add($pendpage)
541     {
542         array_push($this->pending_pages, $pendpage);
543         $this->socks_set($pendpage->socket_get(), NULL, $pendpage);
544     }
545
546     function pendpage_rem($pendpage)
547     {
548         $sock = $pendpage->socket_get();
549         if (($key = array_search($pendpage, $this->pending_pages)) !== FALSE) {
550             unset($this->pending_pages[$key]);
551         }
552         else {
553             fprintf(STDERR, "WARNING: pendpage not found\n");
554         }
555         $this->socks_unset($sock);
556         fprintf(STDERR, "PP_REM: %d\n", intval($sock));
557     }
558
559
560     function pendpage_try_addwait(&$new_socket, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont)
561     {
562         $pendpage = PendingPage::pendingpage_waiting($new_socket, $this->curtime, $tout, $method, $header, $get, $post, $cookie, $path, $addr, $rest, $cont);
563         /*
564         if ($pendpage->try_flush($this->curtime) == FALSE) {
565             // Add $pendpage to the pendpage array
566             */
567         $this->pendpage_add($pendpage);
568         /*
569         }
570         */
571     }
572
573     function garbage_manager($force)
574     {
575         $this->app->garbage_manager($force);
576
577         foreach ($this->socks as $k => $sock) {
578             $id = intval($sock);
579             if (isset($this->s2u[$id])) {
580                 if ($this->s2u[$id]->sess == '') {
581                     if ($this->s2u[$id]->rd_socket_get() != NULL) {
582                         $this->s2u[$id]->rd_socket_set(NULL);
583                     }
584                     unset($this->socks[$id]);
585                     unset($this->s2u[$id]);
586                     fclose($sock);
587                     printf("CLOSE ON GARBAGE MANAGER\n");
588                 }
589             }
590         }
591     }
592
593     function run()
594     {
595         GLOBAL $DOCUMENT_ROOT, $HTTP_HOST;
596
597         GLOBAL $G_alarm_passwd, $G_black_list, $G_btrace_pref_sub, $G_dbauth;
598         GLOBAL $G_dbpfx, $G_donors_all, $G_donors_cur, $G_is_local, $G_lang;
599         GLOBAL $G_poll_entries, $G_poll_name, $G_poll_title, $G_proxy_white_list;
600         GLOBAL $G_room_roadmap, $G_shutdown, $G_sidebanner, $G_sidebanner2;
601         GLOBAL $G_splash_content, $G_splash_contents, $G_splash_cont_idx;
602         GLOBAL $G_splash_h, $G_splash_idx, $G_splash_interval, $G_splash_timeout;
603         GLOBAL $G_splash_w, $G_topbanner, $G_with_donors, $G_with_poll;
604         GLOBAL $G_with_sidebanner, $G_with_sidebanner2, $G_with_splash;
605         GLOBAL $G_with_topbanner;
606
607         if ($this->main_loop) {
608             return (FALSE);
609         }
610         
611         $this->main_loop = TRUE;
612         
613         while ($this->main_loop) {
614             $this->curtime = time();
615             fprintf(STDERR, "IN LOOP: Current opened: %d  pending_pages: %d\n", count($this->socks), count($this->pending_pages));
616             
617             /* Prepare the read array */
618             /* // when we manage it ... */
619             /* if ($shutdown)  */
620             /*     $read   = array_merge(array("$in" => $in), $socks); */
621             /* else */
622             $read   = array_merge(array(intval($this->list) => $this->list, intval($this->in) => $this->in,
623                                         intval(static::$cnt_slave) => static::$cnt_slave),
624                                   $this->socks);
625             
626             if ($this->debug > 1) {
627                 printf("PRE_SELECT\n");
628                 print_r($read);
629             }
630             $write  = NULL;
631             $except = NULL;
632             $num_changed_sockets = @stream_select($read, $write, $except, 0, 500000);
633         
634             if ($num_changed_sockets == 0) {
635                 printf(" no data in 5 secs, splash [%d]\n", $G_with_splash);
636             } 
637             else if ($num_changed_sockets > 0) {
638                 printf("num sock %d num_of_socket: %d\n", $num_changed_sockets, count($read));
639                 if ($this->debug > 1) {
640                     print_r($read);
641                 }
642                 /* At least at one of the sockets something interesting happened */
643                 foreach ($read as $i => $sock) {
644                     $id = intval($sock);
645                     $manage_page = FALSE;
646                     /* is_resource check is required because there is the possibility that
647                        during new request an old connection is closed */
648                     if (!is_resource($sock)) {
649                         continue;
650                     }
651                     if ($sock === $this->list) {
652                         printf("NUOVA CONNEX\n");
653                         if (($new_unix = stream_socket_accept($this->list)) == FALSE) {
654                             printf("SOCKET_ACCEPT FAILED\n");
655                             continue;
656                         }
657                         $stream_info = "";
658                         $method      = "";
659                         $get         = array();
660                         $post        = array();
661                         $cookie      = array();
662                         $rest        = 0;
663                         $cont        = "";
664                         if (($new_socket = ancillary_getstream($new_unix, $stream_info)) !== FALSE) {
665                             printf("NEW_SOCKET: %d\n", intval($new_socket));
666                             stream_set_blocking($new_socket, $this->blocking_mode); // Set the stream to non-blocking
667                             printf("RECEIVED HEADER:\n%s", $stream_info);
668                             if (($path = spu_process_info($stream_info, $method, $header,
669                                                           $get, $post, $cookie, $rest, $cont))
670                                 == FALSE) {
671                                 fprintf(STDERR, "TODO: fix wrong header management\n");
672                             }
673                             $addr = stream_socket_get_name($new_socket, TRUE);
674                             printf("PATH: [%s]\n", $path);
675                             if ($method == "POST" && $rest > 0) {
676                                 if (isset($header['Expect']) && $header['Expect'] == '100-continue') {
677                                     fprintf(STDERR, "\nPOSTA DE CHE\n\n");
678                                     $this->pendpage_try_addcont($new_socket, 20,
679                                                                 $method, $header, $get, $post, $cookie,
680                                                                 $path, $addr, $rest, $cont);
681                                 }
682                                 else {
683                                     $this->pendpage_try_addwait($new_socket, 20,
684                                                                 $method, $header, $get, $post, $cookie,
685                                                                 $path, $addr, $rest, $cont);
686                                 }
687                             }
688                             else {
689                                 $manage_page = TRUE;
690                             }
691
692                             printf("number of sockets after %d\n", count($this->socks));
693                         }
694                         else {
695                             printf("WARNING: ancillary_getstream failed\n");
696                         }
697                     }
698                     else {
699                         $buf = fread($sock, 4096);
700                         // if socket is closed
701                         if ($buf == FALSE || mb_strlen($buf, "ASCII") == 0) {
702                             // close socket case
703                             if ($buf == FALSE) {
704                                 printf("ERROR READING\n");
705                             }
706                             if ($sock === $this->list) {
707                                 printf("Arrivati %d bytes da list\n", mb_strlen($buf, "ASCII"));
708                                 return(21);
709                             }
710                             else if ($sock === $this->in || $sock === static::$cnt_slave) {
711                                 printf("Arrivati %d bytes da stdin\n", mb_strlen($buf, "ASCII"));
712                                 return(22);
713                             }
714                             else {
715                                 unset($this->socks[$id]);
716                                 if (isset($this->s2u[$id])) {
717                                     // $user_a[$s2u[$id]]->disable();
718                                     if ($this->s2u[$id]->rd_socket_get() != NULL) {
719                                         $this->s2u[$id]->rd_socket_set(NULL);
720                                     }
721                                     unset($this->s2u[$id]);
722                                 }
723                             }
724                             fclose($sock);
725                             printf("CLOSE ON READ\n");
726
727                             if ($this->debug > 1) {
728                                 printf("post unset\n");
729                                 print_r($this->socks);
730                             }
731                         }
732                         else {
733                             if ($this->debug > 1) {
734                                 print_r($read);
735                             }
736                             if ($sock === $this->list) {
737                                 printf("Arrivati %d bytes da list\n", mb_strlen($buf, "ASCII"));
738                             }
739                             else if ($sock === $this->in || $sock === static::$cnt_slave) {
740                                 printf("Arrivati %d bytes da stdin\n", mb_strlen($buf, "ASCII"));
741                                 $line = trim($buf);
742                                 if ($line == "reload") {
743                                     require("$DOCUMENT_ROOT/Etc/".BRISK_CONF);
744
745                                     global_dump();
746                                 }
747                                 else if ($line == "shutdown") {
748                                     if ($this->app->dump_data()) {
749                                         return(0);
750                                     }
751                                     else {
752                                         return(1);
753                                     }
754                                 }
755                             }
756                             else {
757                                 $key = array_search("$sock", $this->socks);
758                                 fprintf(STDERR, "Arrivati %d bytes dalla socket n. %d\n", mb_strlen($buf, "ASCII"), $key);
759                                 if (isset($this->s2p[$id])) {
760                                     $this->s2p[$id]->rest -= mb_strlen($buf, "ASCII");
761                                     $this->s2p[$id]->cont .= $buf;
762                                     if ($this->s2p[$id]->rest <= 0) {
763                                         $header = $new_socket = $path = $addr = $get = $cookie = 0;
764                                         $post = array();
765
766                                         $this->s2p[$id]->context_get($header, $new_socket, $path, $addr, $get, $post, $cookie);
767                                         $this->pendpage_rem($this->s2p[$id]);
768                                         fprintf(STDERR, "SOCKET RUN: %s\n", $new_socket);
769
770                                         $manage_page = TRUE;
771                                     }
772                                 }
773                             }
774                         }
775                     }
776
777                     if ($manage_page == TRUE) {
778                         printf("M: %s\nHEADER:\n", $method);
779                         print_r($header);
780                         printf("GET:\n");
781                         print_r($get);
782                         printf("POST:\n");
783                         print_r($post);
784                         printf("COOKIE:\n");
785                         print_r($cookie);
786
787                         $header_out = array();
788                         // TODO: MOVE DOWN request_mgr to factorize new_sockets and POST closed
789                         $rret = FALSE;
790                         if (!strncmp($path, SITE_PREFIX, SITE_PREFIX_LEN)) {
791                             $rret = $this->app->request_mgr($this, $header, $header_out, $new_socket, substr($path, SITE_PREFIX_LEN), $addr, $get, $post, $cookie);
792                         }
793                         fprintf(STDERR, "\n\n DI QUI PASSA [%s]\n\n", $rret);
794                         if ($rret == FALSE) {
795                             // FIXME: manage 404 !!!
796                             printf("TODO: fix unknown page\n");
797                         }
798                     }
799                 }
800             }
801
802             $this->garbage_manager(FALSE);
803
804             /* manage unfinished pages */
805             foreach ($this->pending_pages as $k => $pendpage) {
806                 // TODO: try_flush if exists in the class
807                 if ($pendpage->try_flush($this->curtime) == TRUE) {
808                     unset($this->pending_pages[$k]);
809                 }
810             }
811             
812             /*
813                $response:                        raw stream data not sent
814                $content:                         html consistent data (<script bla bla>)
815                $user->stream_keepalive($w_ping)  ping srv->cli OR srv->cli + cli->srv if $w_ping == TRUE
816             */
817
818             /* manage open streaming */
819             foreach ($this->socks as $k => $sock) {
820                 $id = intval($sock);
821                 if (isset($this->s2u[$id])) {
822                     $user = $this->s2u[$id];
823                     $response = $user->rd_cache_get();
824                     $do_ping = FALSE;
825                     if (($this->curtime - $user->lacc) > (EXPIRE_TIME_RD / 3)) {
826                         $do_ping = TRUE;
827                     }
828                     else {
829                         $user->ping_req = FALSE;
830                     }
831
832                     if ($response == "") {
833                         $content = "";
834                         $user->stream_main($content, $get, $post, $cookie);
835                         printf("[%s] [%d] [%d]\n", $user->name, $user->lacc, $this->curtime);
836                         if ($do_ping && $user->ping_req == FALSE) {
837                             $content .= $user->stream_keepalive(TRUE);
838                             $user->ping_req = TRUE;
839                         }
840                         else if ($content == "" && $user->rd_kalive_is_expired($this->curtime)) {
841                             $content = $user->stream_keepalive(FALSE);
842                         }
843                         if ($content != "") {
844                             $response = $user->chunked_content($content);
845                         }
846                     }
847                     
848                     if ($response != "") {
849                         // echo "SPIA: [".substr($response, 0, 60)."...]\n";
850                         // echo "SPIA: [".$response."]\n";
851                         $response_l = mb_strlen($response, "ASCII");
852                         $wret = @fwrite($sock, $response);
853                         if ($wret < $response_l) {
854                             printf("TROUBLE WITH FWRITE: %d\n", $wret);
855                             $user->rd_cache_set(mb_substr($response, $wret, $response_l - $wret, "ASCII"));
856                         }
857                         else {
858                             $user->rd_cache_set("");
859                         }
860                         fflush($sock);
861                         $user->rd_kalive_reset($this->curtime);
862                     }
863                     
864                     // close socket after a while to prevent client memory consumption
865                     if ($user->rd_endtime_is_expired($this->curtime)) {
866                         if ($this->s2u[$id]->rd_socket_get() != NULL) {
867                             $this->s2u[$id]->rd_socket_set(NULL);
868                         }
869                         unset($this->socks[$id]);
870                         unset($this->s2u[$id]);
871                         fclose($sock);
872                         printf("CLOSE ON LOOP\n");
873                     }
874                 }
875             }  // foreach ($this->socks...
876             printf("\n");
877         }  // while (...
878     }  // function run(...
879 }
880
881 ?>