Annotation of loncom/lond, revision 1.1
1.1 ! albertel 1: #!/usr/bin/perl
! 2: # The LearningOnline Network
! 3: # lond "LON Daemon" Server (port "LOND" 5663)
! 4: # 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30,
! 5: # 7/8,7/9,7/10,7/12,7/17,7/19,9/21,10/7,10/8,10/9,10/11 Gerd Kortemeyer
! 6: # based on "Perl Cookbook" ISBN 1-56592-243-3
! 7: # preforker - server who forks first
! 8: # runs as a daemon
! 9: # HUPs
! 10: # uses IDEA encryption
! 11:
! 12: use IO::Socket;
! 13: use IO::File;
! 14: use Apache::File;
! 15: use Symbol;
! 16: use POSIX;
! 17: use Crypt::IDEA;
! 18: use LWP::UserAgent();
! 19:
! 20: # ------------------------------------ Read httpd access.conf and get variables
! 21:
! 22: open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
! 23:
! 24: while ($configline=<CONFIG>) {
! 25: if ($configline =~ /PerlSetVar/) {
! 26: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
! 27: $perlvar{$varname}=$varvalue;
! 28: }
! 29: }
! 30: close(CONFIG);
! 31:
! 32: $PREFORK=4; # number of children to maintain, at least four spare
! 33:
! 34: # ------------------------------------------------------------- Read hosts file
! 35:
! 36: open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
! 37:
! 38: while ($configline=<CONFIG>) {
! 39: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
! 40: chomp($ip);
! 41: $hostid{$ip}=$id;
! 42: if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; }
! 43: $PREFORK++;
! 44: }
! 45: close(CONFIG);
! 46:
! 47: # establish SERVER socket, bind and listen.
! 48: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
! 49: Type => SOCK_STREAM,
! 50: Proto => 'tcp',
! 51: Reuse => 1,
! 52: Listen => 10 )
! 53: or die "making socket: $@\n";
! 54:
! 55: # --------------------------------------------------------- Do global variables
! 56:
! 57: # global variables
! 58:
! 59: $MAX_CLIENTS_PER_CHILD = 5; # number of clients each child should
! 60: # process
! 61: %children = (); # keys are current child process IDs
! 62: $children = 0; # current number of children
! 63:
! 64: sub REAPER { # takes care of dead children
! 65: $SIG{CHLD} = \&REAPER;
! 66: my $pid = wait;
! 67: $children --;
! 68: &logthis("Child $pid died");
! 69: delete $children{$pid};
! 70: }
! 71:
! 72: sub HUNTSMAN { # signal handler for SIGINT
! 73: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
! 74: kill 'INT' => keys %children;
! 75: my $execdir=$perlvar{'lonDaemons'};
! 76: unlink("$execdir/logs/lond.pid");
! 77: &logthis("Shutting down");
! 78: exit; # clean up with dignity
! 79: }
! 80:
! 81: sub HUPSMAN { # signal handler for SIGHUP
! 82: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
! 83: kill 'INT' => keys %children;
! 84: close($server); # free up socket
! 85: &logthis("Restarting");
! 86: my $execdir=$perlvar{'lonDaemons'};
! 87: exec("$execdir/lond"); # here we go again
! 88: }
! 89:
! 90: # --------------------------------------------------------------------- Logging
! 91:
! 92: sub logthis {
! 93: my $message=shift;
! 94: my $execdir=$perlvar{'lonDaemons'};
! 95: my $fh=IO::File->new(">>$execdir/logs/lond.log");
! 96: my $now=time;
! 97: my $local=localtime($now);
! 98: print $fh "$local ($$): $message\n";
! 99: }
! 100:
! 101: # ----------------------------------------------------------- Send USR1 to lonc
! 102:
! 103: sub reconlonc {
! 104: my $peerfile=shift;
! 105: &logthis("Trying to reconnect for $peerfile");
! 106: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
! 107: if (my $fh=IO::File->new("$loncfile")) {
! 108: my $loncpid=<$fh>;
! 109: chomp($loncpid);
! 110: if (kill 0 => $loncpid) {
! 111: &logthis("lonc at pid $loncpid responding, sending USR1");
! 112: kill USR1 => $loncpid;
! 113: sleep 1;
! 114: if (-e "$peerfile") { return; }
! 115: &logthis("$peerfile still not there, give it another try");
! 116: sleep 5;
! 117: if (-e "$peerfile") { return; }
! 118: &logthis("$peerfile still not there, giving up");
! 119: } else {
! 120: &logthis("lonc at pid $loncpid not responding, giving up");
! 121: }
! 122: } else {
! 123: &logthis('lonc not running, giving up');
! 124: }
! 125: }
! 126:
! 127: # -------------------------------------------------- Non-critical communication
! 128: sub subreply {
! 129: my ($cmd,$server)=@_;
! 130: my $peerfile="$perlvar{'lonSockDir'}/$server";
! 131: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
! 132: Type => SOCK_STREAM,
! 133: Timeout => 10)
! 134: or return "con_lost";
! 135: print $sclient "$cmd\n";
! 136: my $answer=<$sclient>;
! 137: chomp($answer);
! 138: if (!$answer) { $answer="con_lost"; }
! 139: return $answer;
! 140: }
! 141:
! 142: sub reply {
! 143: my ($cmd,$server)=@_;
! 144: my $answer;
! 145: if ($server ne $perlvar{'lonHostID'}) {
! 146: $answer=subreply($cmd,$server);
! 147: if ($answer eq 'con_lost') {
! 148: $answer=subreply("ping",$server);
! 149: if ($answer ne $server) {
! 150: &reconlonc("$perlvar{'lonSockDir'}/$server");
! 151: }
! 152: $answer=subreply($cmd,$server);
! 153: }
! 154: } else {
! 155: $answer='self_reply';
! 156: }
! 157: return $answer;
! 158: }
! 159:
! 160: # -------------------------------------------- Return path to profile directory
! 161: sub propath {
! 162: my ($udom,$uname)=@_;
! 163: $udom=~s/\W//g;
! 164: $uname=~s/\W//g;
! 165: my $subdir=$uname;
! 166: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
! 167: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
! 168: return $proname;
! 169: }
! 170:
! 171: # --------------------------------------- Is this the home server of an author?
! 172: sub ishome {
! 173: my $author=shift;
! 174: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
! 175: my ($udom,$uname)=split(/\//,$author);
! 176: my $proname=propath($udom,$uname);
! 177: if (-e $proname) {
! 178: return 'owner';
! 179: } else {
! 180: return 'not_owner';
! 181: }
! 182: }
! 183:
! 184: # ======================================================= Continue main program
! 185: # ---------------------------------------------------- Fork once and dissociate
! 186:
! 187: $fpid=fork;
! 188: exit if $fpid;
! 189: die "Couldn't fork: $!" unless defined ($fpid);
! 190:
! 191: POSIX::setsid() or die "Can't start new session: $!";
! 192:
! 193: # ------------------------------------------------------- Write our PID on disk
! 194:
! 195: $execdir=$perlvar{'lonDaemons'};
! 196: open (PIDSAVE,">$execdir/logs/lond.pid");
! 197: print PIDSAVE "$$\n";
! 198: close(PIDSAVE);
! 199: &logthis("Starting");
! 200:
! 201: # ------------------------------------------------------- Now we are on our own
! 202:
! 203: # Fork off our children.
! 204: for (1 .. $PREFORK) {
! 205: make_new_child();
! 206: }
! 207:
! 208: # ----------------------------------------------------- Install signal handlers
! 209:
! 210: $SIG{CHLD} = \&REAPER;
! 211: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
! 212: $SIG{HUP} = \&HUPSMAN;
! 213:
! 214: # And maintain the population.
! 215: while (1) {
! 216: sleep; # wait for a signal (i.e., child's death)
! 217: for ($i = $children; $i < $PREFORK; $i++) {
! 218: make_new_child(); # top up the child pool
! 219: }
! 220: }
! 221:
! 222: sub make_new_child {
! 223: my $pid;
! 224: my $cipher;
! 225: my $sigset;
! 226: &logthis("Attempting to start child");
! 227: # block signal for fork
! 228: $sigset = POSIX::SigSet->new(SIGINT);
! 229: sigprocmask(SIG_BLOCK, $sigset)
! 230: or die "Can't block SIGINT for fork: $!\n";
! 231:
! 232: die "fork: $!" unless defined ($pid = fork);
! 233:
! 234: if ($pid) {
! 235: # Parent records the child's birth and returns.
! 236: sigprocmask(SIG_UNBLOCK, $sigset)
! 237: or die "Can't unblock SIGINT for fork: $!\n";
! 238: $children{$pid} = 1;
! 239: $children++;
! 240: return;
! 241: } else {
! 242: # Child can *not* return from this subroutine.
! 243: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
! 244:
! 245: # unblock signals
! 246: sigprocmask(SIG_UNBLOCK, $sigset)
! 247: or die "Can't unblock SIGINT for fork: $!\n";
! 248:
! 249: # handle connections until we've reached $MAX_CLIENTS_PER_CHILD
! 250: for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {
! 251: $client = $server->accept() or last;
! 252:
! 253: # =============================================================================
! 254: # do something with the connection
! 255: # -----------------------------------------------------------------------------
! 256: # see if we know client
! 257: my $caller=getpeername($client);
! 258: my ($port,$iaddr)=unpack_sockaddr_in($caller);
! 259: my $clientip=inet_ntoa($iaddr);
! 260: my $clientrec=($hostid{$clientip} ne undef);
! 261: &logthis("Connect from $clientip ($hostid{$clientip})");
! 262: if ($clientrec) {
! 263: # ---------------- New known client connecting, could mean machine online again
! 264: &reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}");
! 265: # ------------------------------------------------------------ Process requests
! 266: while (my $userinput=<$client>) {
! 267: chomp($userinput);
! 268: my $wasenc=0;
! 269: # ------------------------------------------------------------ See if encrypted
! 270: if ($userinput =~ /^enc/) {
! 271: if ($cipher) {
! 272: my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput);
! 273: $userinput='';
! 274: for (my $encidx=0;$encidx<length($encinput);$encidx+=16) {
! 275: $userinput.=
! 276: $cipher->decrypt(
! 277: pack("H16",substr($encinput,$encidx,16))
! 278: );
! 279: }
! 280: $userinput=substr($userinput,0,$cmdlength);
! 281: $wasenc=1;
! 282: }
! 283: }
! 284: # ------------------------------------------------------------- Normal commands
! 285: # ------------------------------------------------------------------------ ping
! 286: if ($userinput =~ /^ping/) {
! 287: print $client "$perlvar{'lonHostID'}\n";
! 288: # ------------------------------------------------------------------------ pong
! 289: } elsif ($userinput =~ /^pong/) {
! 290: $reply=reply("ping",$hostid{$clientip});
! 291: print $client "$perlvar{'lonHostID'}:$reply\n";
! 292: # ------------------------------------------------------------------------ ekey
! 293: } elsif ($userinput =~ /^ekey/) {
! 294: my $buildkey=time.$$.int(rand 100000);
! 295: $buildkey=~tr/1-6/A-F/;
! 296: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
! 297: my $key=$perlvar{'lonHostID'}.$hostid{$clientip};
! 298: $key=~tr/a-z/A-Z/;
! 299: $key=~tr/G-P/0-9/;
! 300: $key=~tr/Q-Z/0-9/;
! 301: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
! 302: $key=substr($key,0,32);
! 303: my $cipherkey=pack("H32",$key);
! 304: $cipher=new IDEA $cipherkey;
! 305: print $client "$buildkey\n";
! 306: # ------------------------------------------------------------------------ load
! 307: } elsif ($userinput =~ /^load/) {
! 308: my $loadavg;
! 309: {
! 310: my $loadfile=IO::File->new('/proc/loadavg');
! 311: $loadavg=<$loadfile>;
! 312: }
! 313: $loadavg =~ s/\s.*//g;
! 314: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
! 315: print $client "$loadpercent\n";
! 316: # ------------------------------------------------------------------------ auth
! 317: } elsif ($userinput =~ /^auth/) {
! 318: if ($wasenc==1) {
! 319: my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
! 320: chomp($upass);
! 321: my $proname=propath($udom,$uname);
! 322: my $passfilename="$proname/passwd";
! 323: if (-e $passfilename) {
! 324: my $pf = IO::File->new($passfilename);
! 325: my $realpasswd=<$pf>;
! 326: chomp($realpasswd);
! 327: if ($realpasswd eq $upass ) {
! 328: print $client "authorized\n";
! 329: } else {
! 330: print $client "non_authorized\n";
! 331: }
! 332: } else {
! 333: print $client "unknown_user\n";
! 334: }
! 335: } else {
! 336: print $client "refused\n";
! 337: }
! 338: # ---------------------------------------------------------------------- passwd
! 339: } elsif ($userinput =~ /^passwd/) {
! 340: if ($wasenc==1) {
! 341: my
! 342: ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
! 343: chomp($npass);
! 344: my $proname=propath($udom,$uname);
! 345: my $passfilename="$proname/passwd";
! 346: if (-e $passfilename) {
! 347: my $realpasswd;
! 348: { my $pf = IO::File->new($passfilename);
! 349: $realpasswd=<$pf>; }
! 350: chomp($realpasswd);
! 351: if ($realpasswd eq $upass ) {
! 352: { my $pf = IO::File->new(">$passfilename");
! 353: print $pf "$npass\n";; }
! 354: print $client "ok\n";
! 355: } else {
! 356: print $client "non_authorized\n";
! 357: }
! 358: } else {
! 359: print $client "unknown_user\n";
! 360: }
! 361: } else {
! 362: print $client "refused\n";
! 363: }
! 364: # ------------------------------------------------------------------------ home
! 365: } elsif ($userinput =~ /^home/) {
! 366: my ($cmd,$udom,$uname)=split(/:/,$userinput);
! 367: chomp($uname);
! 368: my $proname=propath($udom,$uname);
! 369: if (-e $proname) {
! 370: print $client "found\n";
! 371: } else {
! 372: print $client "not_found\n";
! 373: }
! 374: # ---------------------------------------------------------------------- update
! 375: } elsif ($userinput =~ /^update/) {
! 376: my ($cmd,$fname)=split(/:/,$userinput);
! 377: my $ownership=ishome($fname);
! 378: if ($ownership eq 'not_owner') {
! 379: if (-e $fname) {
! 380: my ($dev,$ino,$mode,$nlink,
! 381: $uid,$gid,$rdev,$size,
! 382: $atime,$mtime,$ctime,
! 383: $blksize,$blocks)=stat($fname);
! 384: $now=time;
! 385: $since=$now-$atime;
! 386: if ($since>$perlvar{'lonExpire'}) {
! 387: $reply=
! 388: reply("unsub:$fname","$hostid{$clientip}");
! 389: unlink("$fname");
! 390: } else {
! 391: my $transname="$fname.in.transfer";
! 392: my $remoteurl=
! 393: reply("sub:$fname","$hostid{$clientip}");
! 394: my $response;
! 395: {
! 396: my $ua=new LWP::UserAgent;
! 397: my $request=new HTTP::Request('GET',"$remoteurl");
! 398: $response=$ua->request($request,$transname);
! 399: }
! 400: if ($response->is_error()) {
! 401: unline($transname);
! 402: my $message=$response->status_line;
! 403: &logthis(
! 404: "LWP GET: $message for $fname ($remoteurl)");
! 405: } else {
! 406: rename($transname,$fname);
! 407: }
! 408: }
! 409: print $client "ok\n";
! 410: } else {
! 411: print $client "not_found\n";
! 412: }
! 413: } else {
! 414: print $client "rejected\n";
! 415: }
! 416: # ----------------------------------------------------------------- unsubscribe
! 417: } elsif ($userinput =~ /^unsub/) {
! 418: my ($cmd,$fname)=split(/:/,$userinput);
! 419: if (-e $fname) {
! 420: if (unlink("$fname.$hostid{$clientip}")) {
! 421: print $client "ok\n";
! 422: } else {
! 423: print $client "not_subscribed\n";
! 424: }
! 425: } else {
! 426: print $client "not_found\n";
! 427: }
! 428: # ------------------------------------------------------------------- subscribe
! 429: } elsif ($userinput =~ /^sub/) {
! 430: my ($cmd,$fname)=split(/:/,$userinput);
! 431: my $ownership=ishome($fname);
! 432: if ($ownership eq 'owner') {
! 433: if (-e $fname) {
! 434: $now=time;
! 435: {
! 436: my $sh=IO::File->new(">$fname.$hostid{$clientip}");
! 437: print $sh "$clientip:$now\n";
! 438: }
! 439: $fname=~s/\/home\/httpd\/html\/res/raw/;
! 440: $fname="http://$thisserver/".$fname;
! 441: print $client "$fname\n";
! 442: } else {
! 443: print $client "not_found\n";
! 444: }
! 445: } else {
! 446: print $client "rejected\n";
! 447: }
! 448: # ------------------------------------------------------------------------- put
! 449: } elsif ($userinput =~ /^put/) {
! 450: my ($cmd,$udom,$uname,$namespace,$what)
! 451: =split(/:/,$userinput);
! 452: $namespace=~s/\W//g;
! 453: chomp($what);
! 454: my $proname=propath($udom,$uname);
! 455: my $now=time;
! 456: {
! 457: my $hfh;
! 458: if (
! 459: $hfh=IO::File->new(">>$proname/$namespace.hist")
! 460: ) { print $hfh "P:$now:$what\n"; }
! 461: }
! 462: my @pairs=split(/\&/,$what);
! 463: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 464: foreach $pair (@pairs) {
! 465: ($key,$value)=split(/=/,$pair);
! 466: $hash{$key}=$value;
! 467: }
! 468: if (dbmclose(%hash)) {
! 469: print $client "ok\n";
! 470: } else {
! 471: print $client "error:$!\n";
! 472: }
! 473: } else {
! 474: print $client "error:$!\n";
! 475: }
! 476: # ------------------------------------------------------------------------- get
! 477: } elsif ($userinput =~ /^get/) {
! 478: my ($cmd,$udom,$uname,$namespace,$what)
! 479: =split(/:/,$userinput);
! 480: $namespace=~s/\W//g;
! 481: chomp($what);
! 482: my @queries=split(/\&/,$what);
! 483: my $proname=propath($udom,$uname);
! 484: my $qresult='';
! 485: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 486: for ($i=0;$i<=$#queries;$i++) {
! 487: $qresult.="$hash{$queries[$i]}&";
! 488: }
! 489: if (dbmclose(%hash)) {
! 490: $qresult=~s/\&$//;
! 491: print $client "$qresult\n";
! 492: } else {
! 493: print $client "error:$!\n";
! 494: }
! 495: } else {
! 496: print $client "error:$!\n";
! 497: }
! 498: # ------------------------------------------------------------------------ eget
! 499: } elsif ($userinput =~ /^eget/) {
! 500: my ($cmd,$udom,$uname,$namespace,$what)
! 501: =split(/:/,$userinput);
! 502: $namespace=~s/\W//g;
! 503: chomp($what);
! 504: my @queries=split(/\&/,$what);
! 505: my $proname=propath($udom,$uname);
! 506: my $qresult='';
! 507: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 508: for ($i=0;$i<=$#queries;$i++) {
! 509: $qresult.="$hash{$queries[$i]}&";
! 510: }
! 511: if (dbmclose(%hash)) {
! 512: $qresult=~s/\&$//;
! 513: if ($cipher) {
! 514: my $cmdlength=length($qresult);
! 515: $qresult.=" ";
! 516: my $encqresult='';
! 517: for
! 518: (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
! 519: $encqresult.=
! 520: unpack("H16",
! 521: $cipher->encrypt(substr($qresult,$encidx,8)));
! 522: }
! 523: print $client "enc:$cmdlength:$encqresult\n";
! 524: } else {
! 525: print $client "error:no_key\n";
! 526: }
! 527: } else {
! 528: print $client "error:$!\n";
! 529: }
! 530: } else {
! 531: print $client "error:$!\n";
! 532: }
! 533: # ------------------------------------------------------------------------- del
! 534: } elsif ($userinput =~ /^del/) {
! 535: my ($cmd,$udom,$uname,$namespace,$what)
! 536: =split(/:/,$userinput);
! 537: $namespace=~s/\W//g;
! 538: chomp($what);
! 539: my $proname=propath($udom,$uname);
! 540: my $now=time;
! 541: {
! 542: my $hfh;
! 543: if (
! 544: $hfh=IO::File->new(">>$proname/$namespace.hist")
! 545: ) { print $hfh "D:$now:$what\n"; }
! 546: }
! 547: my @keys=split(/\&/,$what);
! 548: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 549: foreach $key (@keys) {
! 550: delete($hash{$key});
! 551: }
! 552: if (dbmclose(%hash)) {
! 553: print $client "ok\n";
! 554: } else {
! 555: print $client "error:$!\n";
! 556: }
! 557: } else {
! 558: print $client "error:$!\n";
! 559: }
! 560: # ------------------------------------------------------------------------ keys
! 561: } elsif ($userinput =~ /^keys/) {
! 562: my ($cmd,$udom,$uname,$namespace)
! 563: =split(/:/,$userinput);
! 564: $namespace=~s/\W//g;
! 565: chomp($namespace);
! 566: my $proname=propath($udom,$uname);
! 567: my $qresult='';
! 568: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 569: foreach $key (keys %hash) {
! 570: $qresult.="$key&";
! 571: }
! 572: if (dbmclose(%hash)) {
! 573: $qresult=~s/\&$//;
! 574: print $client "$qresult\n";
! 575: } else {
! 576: print $client "error:$!\n";
! 577: }
! 578: } else {
! 579: print $client "error:$!\n";
! 580: }
! 581: # ------------------------------------------------------------------------ dump
! 582: } elsif ($userinput =~ /^dump/) {
! 583: my ($cmd,$udom,$uname,$namespace)
! 584: =split(/:/,$userinput);
! 585: $namespace=~s/\W//g;
! 586: chomp($namespace);
! 587: my $proname=propath($udom,$uname);
! 588: my $qresult='';
! 589: if (dbmopen(%hash,"$proname/$namespace.db",0644)) {
! 590: foreach $key (keys %hash) {
! 591: $qresult.="$key=$hash{$key}&";
! 592: }
! 593: if (dbmclose(%hash)) {
! 594: $qresult=~s/\&$//;
! 595: print $client "$qresult\n";
! 596: } else {
! 597: print $client "error:$!\n";
! 598: }
! 599: } else {
! 600: print $client "error:$!\n";
! 601: }
! 602: # ----------------------------------------------------------------------- idput
! 603: } elsif ($userinput =~ /^idput/) {
! 604: my ($cmd,$udom,$what)=split(/:/,$userinput);
! 605: chomp($what);
! 606: $udom=~s/\W//g;
! 607: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
! 608: my $now=time;
! 609: {
! 610: my $hfh;
! 611: if (
! 612: $hfh=IO::File->new(">>$proname.hist")
! 613: ) { print $hfh "P:$now:$what\n"; }
! 614: }
! 615: my @pairs=split(/\&/,$what);
! 616: if (dbmopen(%hash,"$proname.db",0644)) {
! 617: foreach $pair (@pairs) {
! 618: ($key,$value)=split(/=/,$pair);
! 619: $hash{$key}=$value;
! 620: }
! 621: if (dbmclose(%hash)) {
! 622: print $client "ok\n";
! 623: } else {
! 624: print $client "error:$!\n";
! 625: }
! 626: } else {
! 627: print $client "error:$!\n";
! 628: }
! 629: # ----------------------------------------------------------------------- idget
! 630: } elsif ($userinput =~ /^idget/) {
! 631: my ($cmd,$udom,$what)=split(/:/,$userinput);
! 632: chomp($what);
! 633: $udom=~s/\W//g;
! 634: my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
! 635: my @queries=split(/\&/,$what);
! 636: my $qresult='';
! 637: if (dbmopen(%hash,"$proname.db",0644)) {
! 638: for ($i=0;$i<=$#queries;$i++) {
! 639: $qresult.="$hash{$queries[$i]}&";
! 640: }
! 641: if (dbmclose(%hash)) {
! 642: $qresult=~s/\&$//;
! 643: print $client "$qresult\n";
! 644: } else {
! 645: print $client "error:$!\n";
! 646: }
! 647: } else {
! 648: print $client "error:$!\n";
! 649: }
! 650: # ------------------------------------------------------------- unknown command
! 651: } else {
! 652: # unknown command
! 653: print $client "unknown_cmd\n";
! 654: }
! 655: # ------------------------------------------------------ client unknown, refuse
! 656: }
! 657: } else {
! 658: print $client "refused\n";
! 659: &logthis("Unknown client $clientip, closing connection");
! 660: }
! 661: &logthis("Disconnect from $clientip ($hostid{$clientip})");
! 662: # =============================================================================
! 663: }
! 664:
! 665: # tidy up gracefully and finish
! 666:
! 667: # this exit is VERY important, otherwise the child will become
! 668: # a producer of more and more children, forking yourself into
! 669: # process death.
! 670: exit;
! 671: }
! 672: }
! 673:
! 674:
! 675:
! 676:
! 677:
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