1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
4: #
5: # $Id: lond,v 1.61 2001/12/20 17:43:05 harris41 Exp $
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA 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: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29: # 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30,
30: # 7/8,7/9,7/10,7/12,7/17,7/19,9/21,
31: # 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16,
32: # 12/7,12/15,01/06,01/11,01/12,01/14,2/8,
33: # 03/07,05/31 Gerd Kortemeyer
34: # 06/26 Scott Harrison
35: # 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer
36: # 12/05 Scott Harrison
37: # 12/05,12/13,12/29 Gerd Kortemeyer
38: # YEAR=2001
39: # Jan 01 Scott Harrison
40: # 02/12 Gerd Kortemeyer
41: # 03/15 Scott Harrison
42: # 03/24 Gerd Kortemeyer
43: # 04/02 Scott Harrison
44: # 05/11,05/28,08/30 Gerd Kortemeyer
45: # 9/30,10/22,11/13,11/15,11/16 Scott Harrison
46: # 11/26,11/27 Gerd Kortemeyer
47: # 12/20 Scott Harrison
48: #
49: ###
50:
51: # based on "Perl Cookbook" ISBN 1-56592-243-3
52: # preforker - server who forks first
53: # runs as a daemon
54: # HUPs
55: # uses IDEA encryption
56:
57: use IO::Socket;
58: use IO::File;
59: use Apache::File;
60: use Symbol;
61: use POSIX;
62: use Crypt::IDEA;
63: use LWP::UserAgent();
64: use GDBM_File;
65: use Authen::Krb4;
66: use lib '/home/httpd/lib/perl/';
67: use localauth;
68:
69: my $status='';
70: my $lastlog='';
71:
72: # grabs exception and records it to log before exiting
73: sub catchexception {
74: my ($error)=@_;
75: $SIG{'QUIT'}='DEFAULT';
76: $SIG{__DIE__}='DEFAULT';
77: &logthis("<font color=red>CRITICAL: "
78: ."ABNORMAL EXIT. Child $$ for server $wasserver died through "
79: ."a crash with this error msg->[$error]</font>");
80: &logthis('Famous last words: '.$status.' - '.$lastlog);
81: if ($client) { print $client "error: $error\n"; }
82: $server->close();
83: die($error);
84: }
85:
86: # -------------------------------- Set signal handlers to record abnormal exits
87:
88: $SIG{'QUIT'}=\&catchexception;
89: $SIG{__DIE__}=\&catchexception;
90:
91: # ------------------------------------ Read httpd access.conf and get variables
92:
93: open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
94:
95: while ($configline=<CONFIG>) {
96: if ($configline =~ /PerlSetVar/) {
97: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
98: chomp($varvalue);
99: $perlvar{$varname}=$varvalue;
100: }
101: }
102: close(CONFIG);
103:
104: # ----------------------------- Make sure this process is running from user=www
105: my $wwwid=getpwnam('www');
106: if ($wwwid!=$<) {
107: $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
108: $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
109: system("echo 'User ID mismatch. lond must be run as user www.' |\
110: mailto $emailto -s '$subj' > /dev/null");
111: exit 1;
112: }
113:
114: # --------------------------------------------- Check if other instance running
115:
116: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
117:
118: if (-e $pidfile) {
119: my $lfh=IO::File->new("$pidfile");
120: my $pide=<$lfh>;
121: chomp($pide);
122: if (kill 0 => $pide) { die "already running"; }
123: }
124:
125: $PREFORK=4; # number of children to maintain, at least four spare
126:
127: # ------------------------------------------------------------- Read hosts file
128:
129: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
130:
131: while ($configline=<CONFIG>) {
132: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
133: chomp($ip);
134: $hostid{$ip}=$id;
135: if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
136: $PREFORK++;
137: }
138: close(CONFIG);
139:
140: # establish SERVER socket, bind and listen.
141: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
142: Type => SOCK_STREAM,
143: Proto => 'tcp',
144: Reuse => 1,
145: Listen => 10 )
146: or die "making socket: $@\n";
147:
148: # --------------------------------------------------------- Do global variables
149:
150: # global variables
151:
152: $MAX_CLIENTS_PER_CHILD = 5; # number of clients each child should
153: # process
154: %children = (); # keys are current child process IDs
155: $children = 0; # current number of children
156:
157: sub REAPER { # takes care of dead children
158: $SIG{CHLD} = \&REAPER;
159: my $pid = wait;
160: $children --;
161: &logthis("Child $pid died");
162: delete $children{$pid};
163: }
164:
165: sub HUNTSMAN { # signal handler for SIGINT
166: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
167: kill 'INT' => keys %children;
168: &logthis("Free socket: ".shutdown($server,2)); # free up socket
169: my $execdir=$perlvar{'lonDaemons'};
170: unlink("$execdir/logs/lond.pid");
171: &logthis("<font color=red>CRITICAL: Shutting down</font>");
172: exit; # clean up with dignity
173: }
174:
175: sub HUPSMAN { # signal handler for SIGHUP
176: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
177: kill 'INT' => keys %children;
178: &logthis("Free socket: ".shutdown($server,2)); # free up socket
179: &logthis("<font color=red>CRITICAL: Restarting</font>");
180: unlink("$execdir/logs/lond.pid");
181: my $execdir=$perlvar{'lonDaemons'};
182: exec("$execdir/lond"); # here we go again
183: }
184:
185: sub checkchildren {
186: &initnewstatus();
187: &logstatus();
188: &logthis('Going to check on the children');
189: foreach (sort keys %children) {
190: sleep 1;
191: unless (kill 'USR1' => $_) {
192: &logthis ('Child '.$_.' is dead');
193: &logstatus($$.' is dead');
194: }
195: }
196: }
197:
198: # --------------------------------------------------------------------- Logging
199:
200: sub logthis {
201: my $message=shift;
202: my $execdir=$perlvar{'lonDaemons'};
203: my $fh=IO::File->new(">>$execdir/logs/lond.log");
204: my $now=time;
205: my $local=localtime($now);
206: $lastlog=$local.': '.$message;
207: print $fh "$local ($$): $message\n";
208: }
209:
210: # ------------------------------------------------------------------ Log status
211:
212: sub logstatus {
213: my $docdir=$perlvar{'lonDocRoot'};
214: my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
215: print $fh $$."\t".$status."\t".$lastlog."\n";
216: }
217:
218: sub initnewstatus {
219: my $docdir=$perlvar{'lonDocRoot'};
220: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
221: my $now=time;
222: my $local=localtime($now);
223: print $fh "LOND status $local - parent $$\n\n";
224: }
225:
226: # -------------------------------------------------------------- Status setting
227:
228: sub status {
229: my $what=shift;
230: my $now=time;
231: my $local=localtime($now);
232: $status=$local.': '.$what;
233: }
234:
235: # -------------------------------------------------------- Escape Special Chars
236:
237: sub escape {
238: my $str=shift;
239: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
240: return $str;
241: }
242:
243: # ----------------------------------------------------- Un-Escape Special Chars
244:
245: sub unescape {
246: my $str=shift;
247: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
248: return $str;
249: }
250:
251: # ----------------------------------------------------------- Send USR1 to lonc
252:
253: sub reconlonc {
254: my $peerfile=shift;
255: &logthis("Trying to reconnect for $peerfile");
256: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
257: if (my $fh=IO::File->new("$loncfile")) {
258: my $loncpid=<$fh>;
259: chomp($loncpid);
260: if (kill 0 => $loncpid) {
261: &logthis("lonc at pid $loncpid responding, sending USR1");
262: kill USR1 => $loncpid;
263: sleep 1;
264: if (-e "$peerfile") { return; }
265: &logthis("$peerfile still not there, give it another try");
266: sleep 5;
267: if (-e "$peerfile") { return; }
268: &logthis(
269: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
270: } else {
271: &logthis(
272: "<font color=red>CRITICAL: "
273: ."lonc at pid $loncpid not responding, giving up</font>");
274: }
275: } else {
276: &logthis('<font color=red>CRITICAL: lonc not running, giving up</font>');
277: }
278: }
279:
280: # -------------------------------------------------- Non-critical communication
281:
282: sub subreply {
283: my ($cmd,$server)=@_;
284: my $peerfile="$perlvar{'lonSockDir'}/$server";
285: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
286: Type => SOCK_STREAM,
287: Timeout => 10)
288: or return "con_lost";
289: print $sclient "$cmd\n";
290: my $answer=<$sclient>;
291: chomp($answer);
292: if (!$answer) { $answer="con_lost"; }
293: return $answer;
294: }
295:
296: sub reply {
297: my ($cmd,$server)=@_;
298: my $answer;
299: if ($server ne $perlvar{'lonHostID'}) {
300: $answer=subreply($cmd,$server);
301: if ($answer eq 'con_lost') {
302: $answer=subreply("ping",$server);
303: if ($answer ne $server) {
304: &reconlonc("$perlvar{'lonSockDir'}/$server");
305: }
306: $answer=subreply($cmd,$server);
307: }
308: } else {
309: $answer='self_reply';
310: }
311: return $answer;
312: }
313:
314: # -------------------------------------------------------------- Talk to lonsql
315:
316: sub sqlreply {
317: my ($cmd)=@_;
318: my $answer=subsqlreply($cmd);
319: if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
320: return $answer;
321: }
322:
323: sub subsqlreply {
324: my ($cmd)=@_;
325: my $unixsock="mysqlsock";
326: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
327: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
328: Type => SOCK_STREAM,
329: Timeout => 10)
330: or return "con_lost";
331: print $sclient "$cmd\n";
332: my $answer=<$sclient>;
333: chomp($answer);
334: if (!$answer) { $answer="con_lost"; }
335: return $answer;
336: }
337:
338: # -------------------------------------------- Return path to profile directory
339:
340: sub propath {
341: my ($udom,$uname)=@_;
342: $udom=~s/\W//g;
343: $uname=~s/\W//g;
344: my $subdir=$uname.'__';
345: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
346: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
347: return $proname;
348: }
349:
350: # --------------------------------------- Is this the home server of an author?
351:
352: sub ishome {
353: my $author=shift;
354: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
355: my ($udom,$uname)=split(/\//,$author);
356: my $proname=propath($udom,$uname);
357: if (-e $proname) {
358: return 'owner';
359: } else {
360: return 'not_owner';
361: }
362: }
363:
364: # ======================================================= Continue main program
365: # ---------------------------------------------------- Fork once and dissociate
366:
367: $fpid=fork;
368: exit if $fpid;
369: die "Couldn't fork: $!" unless defined ($fpid);
370:
371: POSIX::setsid() or die "Can't start new session: $!";
372:
373: # ------------------------------------------------------- Write our PID on disk
374:
375: $execdir=$perlvar{'lonDaemons'};
376: open (PIDSAVE,">$execdir/logs/lond.pid");
377: print PIDSAVE "$$\n";
378: close(PIDSAVE);
379: &logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>");
380: &status('Starting');
381:
382: # ------------------------------------------------------- Now we are on our own
383:
384: # Fork off our children.
385: for (1 .. $PREFORK) {
386: make_new_child();
387: }
388:
389: # ----------------------------------------------------- Install signal handlers
390:
391: &status('Forked children');
392:
393: $SIG{CHLD} = \&REAPER;
394: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
395: $SIG{HUP} = \&HUPSMAN;
396: $SIG{USR1} = \&checkchildren;
397:
398: # And maintain the population.
399: while (1) {
400: &status('Sleeping');
401: sleep; # wait for a signal (i.e., child's death)
402: &logthis('Woke up');
403: &status('Woke up');
404: for ($i = $children; $i < $PREFORK; $i++) {
405: make_new_child(); # top up the child pool
406: }
407: }
408:
409: sub make_new_child {
410: my $pid;
411: my $cipher;
412: my $sigset;
413: &logthis("Attempting to start child");
414: # block signal for fork
415: $sigset = POSIX::SigSet->new(SIGINT);
416: sigprocmask(SIG_BLOCK, $sigset)
417: or die "Can't block SIGINT for fork: $!\n";
418:
419: die "fork: $!" unless defined ($pid = fork);
420:
421: if ($pid) {
422: # Parent records the child's birth and returns.
423: sigprocmask(SIG_UNBLOCK, $sigset)
424: or die "Can't unblock SIGINT for fork: $!\n";
425: $children{$pid} = 1;
426: $children++;
427: &status('Started child '.$pid);
428: return;
429: } else {
430: # Child can *not* return from this subroutine.
431: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
432: $SIG{USR1}= \&logstatus;
433: $lastlog='Forked ';
434: $status='Forked';
435:
436: # unblock signals
437: sigprocmask(SIG_UNBLOCK, $sigset)
438: or die "Can't unblock SIGINT for fork: $!\n";
439:
440: $tmpsnum=0;
441:
442: # handle connections until we've reached $MAX_CLIENTS_PER_CHILD
443: for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {
444: &status('Idle, waiting for connection');
445: $client = $server->accept() or last;
446: &status('Accepted connection');
447: # =============================================================================
448: # do something with the connection
449: # -----------------------------------------------------------------------------
450: # see if we know client and check for spoof IP by challenge
451: my $caller=getpeername($client);
452: my ($port,$iaddr)=unpack_sockaddr_in($caller);
453: my $clientip=inet_ntoa($iaddr);
454: my $clientrec=($hostid{$clientip} ne undef);
455: &logthis(
456: "<font color=yellow>INFO: Connection $i, $clientip ($hostid{$clientip})</font>"
457: );
458: &status("Connecting $clientip ($hostid{$clientip})");
459: my $clientok;
460: if ($clientrec) {
461: &status("Waiting for init from $clientip ($hostid{$clientip})");
462: my $remotereq=<$client>;
463: $remotereq=~s/\W//g;
464: if ($remotereq eq 'init') {
465: my $challenge="$$".time;
466: print $client "$challenge\n";
467: &status(
468: "Waiting for challenge reply from $clientip ($hostid{$clientip})");
469: $remotereq=<$client>;
470: $remotereq=~s/\W//g;
471: if ($challenge eq $remotereq) {
472: $clientok=1;
473: print $client "ok\n";
474: } else {
475: &logthis(
476: "<font color=blue>WARNING: $clientip did not reply challenge</font>");
477: &status('No challenge reply '.$clientip);
478: }
479: } else {
480: &logthis(
481: "<font color=blue>WARNING: "
482: ."$clientip failed to initialize: >$remotereq< </font>");
483: &status('No init '.$clientip);
484: }
485: } else {
486: &logthis(
487: "<font color=blue>WARNING: Unknown client $clientip</font>");
488: &status('Hung up on '.$clientip);
489: }
490: if ($clientok) {
491: # ---------------- New known client connecting, could mean machine online again
492: &reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}");
493: &logthis(
494: "<font color=green>Established connection: $hostid{$clientip}</font>");
495: &status('Will listen to '.$hostid{$clientip});
496: # ------------------------------------------------------------ Process requests
497: while (my $userinput=<$client>) {
498: chomp($userinput);
499: &status('Processing '.$hostid{$clientip}.': '.$userinput);
500: my $wasenc=0;
501: # ------------------------------------------------------------ See if encrypted
502: if ($userinput =~ /^enc/) {
503: if ($cipher) {
504: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
505: $userinput='';
506: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
507: $userinput.=
508: $cipher->decrypt(
509: pack("H16",substr($encinput,$encidx,16))
510: );
511: }
512: $userinput=substr($userinput,0,$cmdlength);
513: $wasenc=1;
514: }
515: }
516: # ------------------------------------------------------------- Normal commands
517: # ------------------------------------------------------------------------ ping
518: if ($userinput =~ /^ping/) {
519: print $client "$perlvar{'lonHostID'}\n";
520: # ------------------------------------------------------------------------ pong
521: } elsif ($userinput =~ /^pong/) {
522: $reply=reply("ping",$hostid{$clientip});
523: print $client "$perlvar{'lonHostID'}:$reply\n";
524: # ------------------------------------------------------------------------ ekey
525: } elsif ($userinput =~ /^ekey/) {
526: my $buildkey=time.$$.int(rand 100000);
527: $buildkey=~tr/1-6/A-F/;
528: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
529: my $key=$perlvar{'lonHostID'}.$hostid{$clientip};
530: $key=~tr/a-z/A-Z/;
531: $key=~tr/G-P/0-9/;
532: $key=~tr/Q-Z/0-9/;
533: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
534: $key=substr($key,0,32);
535: my $cipherkey=pack("H32",$key);
536: $cipher=new IDEA $cipherkey;
537: print $client "$buildkey\n";
538: # ------------------------------------------------------------------------ load
539: } elsif ($userinput =~ /^load/) {
540: my $loadavg;
541: {
542: my $loadfile=IO::File->new('/proc/loadavg');
543: $loadavg=<$loadfile>;
544: }
545: $loadavg =~ s/\s.*//g;
546: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
547: print $client "$loadpercent\n";
548: # ----------------------------------------------------------------- currentauth
549: } elsif ($userinput =~ /^currentauth/) {
550: if ($wasenc==1) {
551: my ($cmd,$udom,$uname)=split(/:/,$userinput);
552: my $proname=propath($udom,$uname);
553: my $passfilename="$proname/passwd";
554: if (-e $passfilename) {
555: my $pf = IO::File->new($passfilename);
556: my $realpasswd=<$pf>;
557: chomp($realpasswd);
558: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
559: my $availablecontent='';
560: if ($howpwd eq 'krb4') {
561: $availablecontent=$contentpwd;
562: }
563: print $client "$howpwd:$availablecontent\n";
564: } else {
565: print $client "unknown_user\n";
566: }
567: } else {
568: print $client "refused\n";
569: }
570: # ------------------------------------------------------------------------ auth
571: } elsif ($userinput =~ /^auth/) {
572: if ($wasenc==1) {
573: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
574: chomp($upass);
575: $upass=unescape($upass);
576: my $proname=propath($udom,$uname);
577: my $passfilename="$proname/passwd";
578: if (-e $passfilename) {
579: my $pf = IO::File->new($passfilename);
580: my $realpasswd=<$pf>;
581: chomp($realpasswd);
582: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
583: my $pwdcorrect=0;
584: if ($howpwd eq 'internal') {
585: $pwdcorrect=
586: (crypt($upass,$contentpwd) eq $contentpwd);
587: } elsif ($howpwd eq 'unix') {
588: $contentpwd=(getpwnam($uname))[1];
589: my $pwauth_path="/usr/local/sbin/pwauth";
590: unless ($contentpwd eq 'x') {
591: $pwdcorrect=
592: (crypt($upass,$contentpwd) eq $contentpwd);
593: }
594: elsif (-e $pwauth_path) {
595: open PWAUTH, "|$pwauth_path" or
596: die "Cannot invoke authentication";
597: print PWAUTH "$uname\n$upass\n";
598: close PWAUTH;
599: $pwdcorrect=!$?;
600: }
601: } elsif ($howpwd eq 'krb4') {
602: $pwdcorrect=(
603: Authen::Krb4::get_pw_in_tkt($uname,"",
604: $contentpwd,'krbtgt',$contentpwd,1,
605: $upass) == 0);
606: } elsif ($howpwd eq 'localauth') {
607: $pwdcorrect=&localauth::localauth($uname,$upass,
608: $contentpwd);
609: }
610: if ($pwdcorrect) {
611: print $client "authorized\n";
612: } else {
613: print $client "non_authorized\n";
614: }
615: } else {
616: print $client "unknown_user\n";
617: }
618: } else {
619: print $client "refused\n";
620: }
621: # ---------------------------------------------------------------------- passwd
622: } elsif ($userinput =~ /^passwd/) {
623: if ($wasenc==1) {
624: my
625: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
626: chomp($npass);
627: $upass=&unescape($upass);
628: $npass=&unescape($npass);
629: my $proname=propath($udom,$uname);
630: my $passfilename="$proname/passwd";
631: if (-e $passfilename) {
632: my $realpasswd;
633: { my $pf = IO::File->new($passfilename);
634: $realpasswd=<$pf>; }
635: chomp($realpasswd);
636: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
637: if ($howpwd eq 'internal') {
638: if (crypt($upass,$contentpwd) eq $contentpwd) {
639: my $salt=time;
640: $salt=substr($salt,6,2);
641: my $ncpass=crypt($npass,$salt);
642: { my $pf = IO::File->new(">$passfilename");
643: print $pf "internal:$ncpass\n"; }
644: print $client "ok\n";
645: } else {
646: print $client "non_authorized\n";
647: }
648: } else {
649: print $client "auth_mode_error\n";
650: }
651: } else {
652: print $client "unknown_user\n";
653: }
654: } else {
655: print $client "refused\n";
656: }
657: # -------------------------------------------------------------------- makeuser
658: } elsif ($userinput =~ /^makeuser/) {
659: my $oldumask=umask(0077);
660: if ($wasenc==1) {
661: my
662: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
663: chomp($npass);
664: $npass=&unescape($npass);
665: my $proname=propath($udom,$uname);
666: my $passfilename="$proname/passwd";
667: if (-e $passfilename) {
668: print $client "already_exists\n";
669: } elsif ($udom ne $perlvar{'lonDefDomain'}) {
670: print $client "not_right_domain\n";
671: } else {
672: @fpparts=split(/\//,$proname);
673: $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
674: $fperror='';
675: for ($i=3;$i<=$#fpparts;$i++) {
676: $fpnow.='/'.$fpparts[$i];
677: unless (-e $fpnow) {
678: unless (mkdir($fpnow,0777)) {
679: $fperror="error:$!\n";
680: }
681: }
682: }
683: unless ($fperror) {
684: if ($umode eq 'krb4') {
685: {
686: my $pf = IO::File->new(">$passfilename");
687: print $pf "krb4:$npass\n";
688: }
689: print $client "ok\n";
690: } elsif ($umode eq 'internal') {
691: my $salt=time;
692: $salt=substr($salt,6,2);
693: my $ncpass=crypt($npass,$salt);
694: {
695: my $pf = IO::File->new(">$passfilename");
696: print $pf "internal:$ncpass\n";
697: }
698: print $client "ok\n";
699: } elsif ($umode eq 'localauth') {
700: {
701: my $pf = IO::File->new(">$passfilename");
702: print $pf "localauth:$npass\n";
703: }
704: print $client "ok\n";
705: } elsif ($umode eq 'unix') {
706: {
707: my $execpath="$perlvar{'lonDaemons'}/".
708: "lcuseradd";
709: {
710: my $se = IO::File->new("|$execpath");
711: print $se "$uname\n";
712: print $se "$npass\n";
713: print $se "$npass\n";
714: }
715: my $pf = IO::File->new(">$passfilename");
716: print $pf "unix:\n";
717: }
718: print $client "ok\n";
719: } elsif ($umode eq 'none') {
720: {
721: my $pf = IO::File->new(">$passfilename");
722: print $pf "none:\n";
723: }
724: print $client "ok\n";
725: } else {
726: print $client "auth_mode_error\n";
727: }
728: } else {
729: print $client "$fperror\n";
730: }
731: }
732: } else {
733: print $client "refused\n";
734: }
735: umask($oldumask);
736: # -------------------------------------------------------------- changeuserauth
737: } elsif ($userinput =~ /^changeuserauth/) {
738: if ($wasenc==1) {
739: my
740: ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
741: chomp($npass);
742: $npass=&unescape($npass);
743: my $proname=propath($udom,$uname);
744: my $passfilename="$proname/passwd";
745: if ($udom ne $perlvar{'lonDefDomain'}) {
746: print $client "not_right_domain\n";
747: } else {
748: if ($umode eq 'krb4') {
749: {
750: my $pf = IO::File->new(">$passfilename");
751: print $pf "krb4:$npass\n";
752: }
753: print $client "ok\n";
754: } elsif ($umode eq 'internal') {
755: my $salt=time;
756: $salt=substr($salt,6,2);
757: my $ncpass=crypt($npass,$salt);
758: {
759: my $pf = IO::File->new(">$passfilename");
760: print $pf "internal:$ncpass\n";
761: }
762: print $client "ok\n";
763: } elsif ($umode eq 'localauth') {
764: {
765: my $pf = IO::File->new(">$passfilename");
766: print $pf "localauth:$npass\n";
767: }
768: print $client "ok\n";
769: } elsif ($umode eq 'unix') {
770: {
771: my $execpath="$perlvar{'lonDaemons'}/".
772: "lcuseradd";
773: {
774: my $se = IO::File->new("|$execpath");
775: print $se "$uname\n";
776: print $se "$npass\n";
777: print $se "$npass\n";
778: }
779: my $pf = IO::File->new(">$passfilename");
780: print $pf "unix:\n";
781: }
782: print $client "ok\n";
783: } elsif ($umode eq 'none') {
784: {
785: my $pf = IO::File->new(">$passfilename");
786: print $pf "none:\n";
787: }
788: print $client "ok\n";
789: } else {
790: print $client "auth_mode_error\n";
791: }
792: }
793: } else {
794: print $client "refused\n";
795: }
796: # ------------------------------------------------------------------------ home
797: } elsif ($userinput =~ /^home/) {
798: my ($cmd,$udom,$uname)=split(/:/,$userinput);
799: chomp($uname);
800: my $proname=propath($udom,$uname);
801: if (-e $proname) {
802: print $client "found\n";
803: } else {
804: print $client "not_found\n";
805: }
806: # ---------------------------------------------------------------------- update
807: } elsif ($userinput =~ /^update/) {
808: my ($cmd,$fname)=split(/:/,$userinput);
809: my $ownership=ishome($fname);
810: if ($ownership eq 'not_owner') {
811: if (-e $fname) {
812: my ($dev,$ino,$mode,$nlink,
813: $uid,$gid,$rdev,$size,
814: $atime,$mtime,$ctime,
815: $blksize,$blocks)=stat($fname);
816: $now=time;
817: $since=$now-$atime;
818: if ($since>$perlvar{'lonExpire'}) {
819: $reply=
820: reply("unsub:$fname","$hostid{$clientip}");
821: unlink("$fname");
822: } else {
823: my $transname="$fname.in.transfer";
824: my $remoteurl=
825: reply("sub:$fname","$hostid{$clientip}");
826: my $response;
827: {
828: my $ua=new LWP::UserAgent;
829: my $request=new HTTP::Request('GET',"$remoteurl");
830: $response=$ua->request($request,$transname);
831: }
832: if ($response->is_error()) {
833: unlink($transname);
834: my $message=$response->status_line;
835: &logthis(
836: "LWP GET: $message for $fname ($remoteurl)");
837: } else {
838: if ($remoteurl!~/\.meta$/) {
839: my $ua=new LWP::UserAgent;
840: my $mrequest=
841: new HTTP::Request('GET',$remoteurl.'.meta');
842: my $mresponse=
843: $ua->request($mrequest,$fname.'.meta');
844: if ($mresponse->is_error()) {
845: unlink($fname.'.meta');
846: }
847: }
848: rename($transname,$fname);
849: }
850: }
851: print $client "ok\n";
852: } else {
853: print $client "not_found\n";
854: }
855: } else {
856: print $client "rejected\n";
857: }
858: # ----------------------------------------------------------------- unsubscribe
859: } elsif ($userinput =~ /^unsub/) {
860: my ($cmd,$fname)=split(/:/,$userinput);
861: if (-e $fname) {
862: if (unlink("$fname.$hostid{$clientip}")) {
863: print $client "ok\n";
864: } else {
865: print $client "not_subscribed\n";
866: }
867: } else {
868: print $client "not_found\n";
869: }
870: # ------------------------------------------------------------------- subscribe
871: } elsif ($userinput =~ /^sub/) {
872: my ($cmd,$fname)=split(/:/,$userinput);
873: my $ownership=ishome($fname);
874: if ($ownership eq 'owner') {
875: if (-e $fname) {
876: if (-d $fname) {
877: print $client "directory\n";
878: } else {
879: $now=time;
880: {
881: my $sh;
882: if ($sh=
883: IO::File->new(">$fname.$hostid{$clientip}")) {
884: print $sh "$clientip:$now\n";
885: }
886: }
887: unless ($fname=~/\.meta$/) {
888: unlink("$fname.meta.$hostid{$clientip}");
889: }
890: $fname=~s/\/home\/httpd\/html\/res/raw/;
891: $fname="http://$thisserver/".$fname;
892: print $client "$fname\n";
893: }
894: } else {
895: print $client "not_found\n";
896: }
897: } else {
898: print $client "rejected\n";
899: }
900: # ------------------------------------------------------------------------- log
901: } elsif ($userinput =~ /^log/) {
902: my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
903: chomp($what);
904: my $proname=propath($udom,$uname);
905: my $now=time;
906: {
907: my $hfh;
908: if ($hfh=IO::File->new(">>$proname/activity.log")) {
909: print $hfh "$now:$hostid{$clientip}:$what\n";
910: print $client "ok\n";
911: } else {
912: print $client "error:$!\n";
913: }
914: }
915: # ------------------------------------------------------------------------- put
916: } elsif ($userinput =~ /^put/) {
917: my ($cmd,$udom,$uname,$namespace,$what)
918: =split(/:/,$userinput);
919: $namespace=~s/\//\_/g;
920: $namespace=~s/\W//g;
921: if ($namespace ne 'roles') {
922: chomp($what);
923: my $proname=propath($udom,$uname);
924: my $now=time;
925: unless ($namespace=~/^nohist\_/) {
926: my $hfh;
927: if (
928: $hfh=IO::File->new(">>$proname/$namespace.hist")
929: ) { print $hfh "P:$now:$what\n"; }
930: }
931: my @pairs=split(/\&/,$what);
932: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
933: foreach $pair (@pairs) {
934: ($key,$value)=split(/=/,$pair);
935: $hash{$key}=$value;
936: }
937: if (untie(%hash)) {
938: print $client "ok\n";
939: } else {
940: print $client "error:$!\n";
941: }
942: } else {
943: print $client "error:$!\n";
944: }
945: } else {
946: print $client "refused\n";
947: }
948: # -------------------------------------------------------------------- rolesput
949: } elsif ($userinput =~ /^rolesput/) {
950: if ($wasenc==1) {
951: my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
952: =split(/:/,$userinput);
953: my $namespace='roles';
954: chomp($what);
955: my $proname=propath($udom,$uname);
956: my $now=time;
957: {
958: my $hfh;
959: if (
960: $hfh=IO::File->new(">>$proname/$namespace.hist")
961: ) {
962: print $hfh "P:$now:$exedom:$exeuser:$what\n";
963: }
964: }
965: my @pairs=split(/\&/,$what);
966: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
967: foreach $pair (@pairs) {
968: ($key,$value)=split(/=/,$pair);
969: $hash{$key}=$value;
970: }
971: if (untie(%hash)) {
972: print $client "ok\n";
973: } else {
974: print $client "error:$!\n";
975: }
976: } else {
977: print $client "error:$!\n";
978: }
979: } else {
980: print $client "refused\n";
981: }
982: # ------------------------------------------------------------------------- get
983: } elsif ($userinput =~ /^get/) {
984: my ($cmd,$udom,$uname,$namespace,$what)
985: =split(/:/,$userinput);
986: $namespace=~s/\//\_/g;
987: $namespace=~s/\W//g;
988: chomp($what);
989: my @queries=split(/\&/,$what);
990: my $proname=propath($udom,$uname);
991: my $qresult='';
992: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
993: for ($i=0;$i<=$#queries;$i++) {
994: $qresult.="$hash{$queries[$i]}&";
995: }
996: if (untie(%hash)) {
997: $qresult=~s/\&$//;
998: print $client "$qresult\n";
999: } else {
1000: print $client "error:$!\n";
1001: }
1002: } else {
1003: print $client "error:$!\n";
1004: }
1005: # ------------------------------------------------------------------------ eget
1006: } elsif ($userinput =~ /^eget/) {
1007: my ($cmd,$udom,$uname,$namespace,$what)
1008: =split(/:/,$userinput);
1009: $namespace=~s/\//\_/g;
1010: $namespace=~s/\W//g;
1011: chomp($what);
1012: my @queries=split(/\&/,$what);
1013: my $proname=propath($udom,$uname);
1014: my $qresult='';
1015: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
1016: for ($i=0;$i<=$#queries;$i++) {
1017: $qresult.="$hash{$queries[$i]}&";
1018: }
1019: if (untie(%hash)) {
1020: $qresult=~s/\&$//;
1021: if ($cipher) {
1022: my $cmdlength=length($qresult);
1023: $qresult.=" ";
1024: my $encqresult='';
1025: for
1026: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
1027: $encqresult.=
1028: unpack("H16",
1029: $cipher->encrypt(substr($qresult,$encidx,8)));
1030: }
1031: print $client "enc:$cmdlength:$encqresult\n";
1032: } else {
1033: print $client "error:no_key\n";
1034: }
1035: } else {
1036: print $client "error:$!\n";
1037: }
1038: } else {
1039: print $client "error:$!\n";
1040: }
1041: # ------------------------------------------------------------------------- del
1042: } elsif ($userinput =~ /^del/) {
1043: my ($cmd,$udom,$uname,$namespace,$what)
1044: =split(/:/,$userinput);
1045: $namespace=~s/\//\_/g;
1046: $namespace=~s/\W//g;
1047: chomp($what);
1048: my $proname=propath($udom,$uname);
1049: my $now=time;
1050: unless ($namespace=~/^nohist\_/) {
1051: my $hfh;
1052: if (
1053: $hfh=IO::File->new(">>$proname/$namespace.hist")
1054: ) { print $hfh "D:$now:$what\n"; }
1055: }
1056: my @keys=split(/\&/,$what);
1057: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
1058: foreach $key (@keys) {
1059: delete($hash{$key});
1060: }
1061: if (untie(%hash)) {
1062: print $client "ok\n";
1063: } else {
1064: print $client "error:$!\n";
1065: }
1066: } else {
1067: print $client "error:$!\n";
1068: }
1069: # ------------------------------------------------------------------------ keys
1070: } elsif ($userinput =~ /^keys/) {
1071: my ($cmd,$udom,$uname,$namespace)
1072: =split(/:/,$userinput);
1073: $namespace=~s/\//\_/g;
1074: $namespace=~s/\W//g;
1075: my $proname=propath($udom,$uname);
1076: my $qresult='';
1077: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
1078: foreach $key (keys %hash) {
1079: $qresult.="$key&";
1080: }
1081: if (untie(%hash)) {
1082: $qresult=~s/\&$//;
1083: print $client "$qresult\n";
1084: } else {
1085: print $client "error:$!\n";
1086: }
1087: } else {
1088: print $client "error:$!\n";
1089: }
1090: # ------------------------------------------------------------------------ dump
1091: } elsif ($userinput =~ /^dump/) {
1092: my ($cmd,$udom,$uname,$namespace)
1093: =split(/:/,$userinput);
1094: $namespace=~s/\//\_/g;
1095: $namespace=~s/\W//g;
1096: my $proname=propath($udom,$uname);
1097: my $qresult='';
1098: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
1099: foreach $key (keys %hash) {
1100: $qresult.="$key=$hash{$key}&";
1101: }
1102: if (untie(%hash)) {
1103: $qresult=~s/\&$//;
1104: print $client "$qresult\n";
1105: } else {
1106: print $client "error:$!\n";
1107: }
1108: } else {
1109: print $client "error:$!\n";
1110: }
1111: # ----------------------------------------------------------------------- store
1112: } elsif ($userinput =~ /^store/) {
1113: my ($cmd,$udom,$uname,$namespace,$rid,$what)
1114: =split(/:/,$userinput);
1115: $namespace=~s/\//\_/g;
1116: $namespace=~s/\W//g;
1117: if ($namespace ne 'roles') {
1118: chomp($what);
1119: my $proname=propath($udom,$uname);
1120: my $now=time;
1121: unless ($namespace=~/^nohist\_/) {
1122: my $hfh;
1123: if (
1124: $hfh=IO::File->new(">>$proname/$namespace.hist")
1125: ) { print $hfh "P:$now:$rid:$what\n"; }
1126: }
1127: my @pairs=split(/\&/,$what);
1128:
1129: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
1130: my @previouskeys=split(/&/,$hash{"keys:$rid"});
1131: my $key;
1132: $hash{"version:$rid"}++;
1133: my $version=$hash{"version:$rid"};
1134: my $allkeys='';
1135: foreach $pair (@pairs) {
1136: ($key,$value)=split(/=/,$pair);
1137: $allkeys.=$key.':';
1138: $hash{"$version:$rid:$key"}=$value;
1139: }
1140: $hash{"$version:$rid:timestamp"}=$now;
1141: $allkeys.='timestamp';
1142: $hash{"$version:keys:$rid"}=$allkeys;
1143: if (untie(%hash)) {
1144: print $client "ok\n";
1145: } else {
1146: print $client "error:$!\n";
1147: }
1148: } else {
1149: print $client "error:$!\n";
1150: }
1151: } else {
1152: print $client "refused\n";
1153: }
1154: # --------------------------------------------------------------------- restore
1155: } elsif ($userinput =~ /^restore/) {
1156: my ($cmd,$udom,$uname,$namespace,$rid)
1157: =split(/:/,$userinput);
1158: $namespace=~s/\//\_/g;
1159: $namespace=~s/\W//g;
1160: chomp($rid);
1161: my $proname=propath($udom,$uname);
1162: my $qresult='';
1163: if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
1164: my $version=$hash{"version:$rid"};
1165: $qresult.="version=$version&";
1166: my $scope;
1167: for ($scope=1;$scope<=$version;$scope++) {
1168: my $vkeys=$hash{"$scope:keys:$rid"};
1169: my @keys=split(/:/,$vkeys);
1170: my $key;
1171: $qresult.="$scope:keys=$vkeys&";
1172: foreach $key (@keys) {
1173: $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
1174: }
1175: }
1176: if (untie(%hash)) {
1177: $qresult=~s/\&$//;
1178: print $client "$qresult\n";
1179: } else {
1180: print $client "error:$!\n";
1181: }
1182: } else {
1183: print $client "error:$!\n";
1184: }
1185: # ------------------------------------------------------------------- querysend
1186: } elsif ($userinput =~ /^querysend/) {
1187: my ($cmd,$query,
1188: $custom,$customshow)=split(/:/,$userinput);
1189: $query=~s/\n*$//g;
1190: unless ($custom or $customshow) {
1191: print $client "".
1192: sqlreply("$hostid{$clientip}\&$query")."\n";
1193: }
1194: else {
1195: print $client "".
1196: sqlreply("$hostid{$clientip}\&$query".
1197: "\&$custom"."\&$customshow")."\n";
1198: }
1199: # ------------------------------------------------------------------ queryreply
1200: } elsif ($userinput =~ /^queryreply/) {
1201: my ($cmd,$id,$reply)=split(/:/,$userinput);
1202: my $store;
1203: my $execdir=$perlvar{'lonDaemons'};
1204: if ($store=IO::File->new(">$execdir/tmp/$id")) {
1205: $reply=~s/\&/\n/g;
1206: print $store $reply;
1207: close $store;
1208: my $store2=IO::File->new(">$execdir/tmp/$id.end");
1209: print $store2 "done\n";
1210: close $store2;
1211: print $client "ok\n";
1212: }
1213: else {
1214: print $client "error:$!\n";
1215: }
1216: # ----------------------------------------------------------------------- idput
1217: } elsif ($userinput =~ /^idput/) {
1218: my ($cmd,$udom,$what)=split(/:/,$userinput);
1219: chomp($what);
1220: $udom=~s/\W//g;
1221: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
1222: my $now=time;
1223: {
1224: my $hfh;
1225: if (
1226: $hfh=IO::File->new(">>$proname.hist")
1227: ) { print $hfh "P:$now:$what\n"; }
1228: }
1229: my @pairs=split(/\&/,$what);
1230: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT,0640)) {
1231: foreach $pair (@pairs) {
1232: ($key,$value)=split(/=/,$pair);
1233: $hash{$key}=$value;
1234: }
1235: if (untie(%hash)) {
1236: print $client "ok\n";
1237: } else {
1238: print $client "error:$!\n";
1239: }
1240: } else {
1241: print $client "error:$!\n";
1242: }
1243: # ----------------------------------------------------------------------- idget
1244: } elsif ($userinput =~ /^idget/) {
1245: my ($cmd,$udom,$what)=split(/:/,$userinput);
1246: chomp($what);
1247: $udom=~s/\W//g;
1248: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
1249: my @queries=split(/\&/,$what);
1250: my $qresult='';
1251: if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER,0640)) {
1252: for ($i=0;$i<=$#queries;$i++) {
1253: $qresult.="$hash{$queries[$i]}&";
1254: }
1255: if (untie(%hash)) {
1256: $qresult=~s/\&$//;
1257: print $client "$qresult\n";
1258: } else {
1259: print $client "error:$!\n";
1260: }
1261: } else {
1262: print $client "error:$!\n";
1263: }
1264: # ---------------------------------------------------------------------- tmpput
1265: } elsif ($userinput =~ /^tmpput/) {
1266: my ($cmd,$what)=split(/:/,$userinput);
1267: my $store;
1268: $tmpsnum++;
1269: my $id=$$.'_'.$clientip.'_'.$tmpsnum;
1270: $id=~s/\W/\_/g;
1271: $what=~s/\n//g;
1272: my $execdir=$perlvar{'lonDaemons'};
1273: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1274: print $store $what;
1275: close $store;
1276: print $client "$id\n";
1277: }
1278: else {
1279: print $client "error:$!\n";
1280: }
1281:
1282: # ---------------------------------------------------------------------- tmpget
1283: } elsif ($userinput =~ /^tmpget/) {
1284: my ($cmd,$id)=split(/:/,$userinput);
1285: chomp($id);
1286: $id=~s/\W/\_/g;
1287: my $store;
1288: my $execdir=$perlvar{'lonDaemons'};
1289: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
1290: my $reply=<$store>;
1291: print $client "$reply\n";
1292: close $store;
1293: }
1294: else {
1295: print $client "error:$!\n";
1296: }
1297:
1298: # -------------------------------------------------------------------------- ls
1299: } elsif ($userinput =~ /^ls/) {
1300: my ($cmd,$ulsdir)=split(/:/,$userinput);
1301: my $ulsout='';
1302: my $ulsfn;
1303: if (-e $ulsdir) {
1304: if (opendir(LSDIR,$ulsdir)) {
1305: while ($ulsfn=readdir(LSDIR)) {
1306: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1307: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1308: }
1309: closedir(LSDIR);
1310: }
1311: } else {
1312: $ulsout='no_such_dir';
1313: }
1314: if ($ulsout eq '') { $ulsout='empty'; }
1315: print $client "$ulsout\n";
1316: # ------------------------------------------------------------------ Hanging up
1317: } elsif (($userinput =~ /^exit/) ||
1318: ($userinput =~ /^init/)) {
1319: &logthis(
1320: "Client $clientip ($hostid{$clientip}) hanging up: $userinput");
1321: print $client "bye\n";
1322: $client->close();
1323: last;
1324: # ------------------------------------------------------------- unknown command
1325: } else {
1326: # unknown command
1327: print $client "unknown_cmd\n";
1328: }
1329: # -------------------------------------------------------------------- complete
1330: &status('Listening to '.$hostid{$clientip});
1331: }
1332: # --------------------------------------------- client unknown or fishy, refuse
1333: } else {
1334: print $client "refused\n";
1335: $client->close();
1336: &logthis("<font color=blue>WARNING: "
1337: ."Rejected client $clientip, closing connection</font>");
1338: }
1339: &logthis("<font color=red>CRITICAL: "
1340: ."Disconnect from $clientip ($hostid{$clientip})</font>");
1341: # =============================================================================
1342: }
1343:
1344: # tidy up gracefully and finish
1345:
1346: $client->close();
1347: $server->close();
1348:
1349: # this exit is VERY important, otherwise the child will become
1350: # a producer of more and more children, forking yourself into
1351: # process death.
1352: exit;
1353: }
1354: }
1355:
1356: # ----------------------------------- POD (plain old documentation, CPAN style)
1357:
1358: =head1 NAME
1359:
1360: lond - "LON Daemon" Server (port "LOND" 5663)
1361:
1362: =head1 SYNOPSIS
1363:
1364: Should only be run as user=www. Invoked by loncron.
1365:
1366: =head1 DESCRIPTION
1367:
1368: Preforker - server who forks first. Runs as a daemon. HUPs.
1369: Uses IDEA encryption
1370:
1371: =head1 README
1372:
1373: Not yet written.
1374:
1375: =head1 PREREQUISITES
1376:
1377: IO::Socket
1378: IO::File
1379: Apache::File
1380: Symbol
1381: POSIX
1382: Crypt::IDEA
1383: LWP::UserAgent()
1384: GDBM_File
1385: Authen::Krb4
1386:
1387: =head1 COREQUISITES
1388:
1389: =head1 OSNAMES
1390:
1391: linux
1392:
1393: =head1 SCRIPT CATEGORIES
1394:
1395: Server/Process
1396:
1397: =cut
1398:
1399:
1400:
1401:
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