--- loncom/lond 2000/05/01 20:22:39 1.11
+++ loncom/lond 2001/03/22 13:28:15 1.38
@@ -5,7 +5,15 @@
# 7/8,7/9,7/10,7/12,7/17,7/19,9/21,
# 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16,
# 12/7,12/15,01/06,01/11,01/12,01/14,2/8,
-# 03/07 Gerd Kortemeyer
+# 03/07,05/31 Gerd Kortemeyer
+# 06/26 Scott Harrison
+# 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer
+# 12/05 Scott Harrison
+# 12/05,12/13,12/29 Gerd Kortemeyer
+# Jan 01 Scott Harrison
+# 02/12 Gerd Kortemeyer
+# 03/15 Scott Harrison
+#
# based on "Perl Cookbook" ISBN 1-56592-243-3
# preforker - server who forks first
# runs as a daemon
@@ -22,6 +30,23 @@ use LWP::UserAgent();
use GDBM_File;
use Authen::Krb4;
+# grabs exception and records it to log before exiting
+sub catchexception {
+ my ($error)=@_;
+ $SIG{'QUIT'}='DEFAULT';
+ $SIG{__DIE__}='DEFAULT';
+ &logthis("CRITICAL: "
+ ."ABNORMAL EXIT. Child $$ for server $wasserver died through "
+ ."a crash with this error msg->[$error]");
+ if ($client) { print $client "error: $error\n"; }
+ die($error);
+}
+
+# -------------------------------- Set signal handlers to record abnormal exits
+
+$SIG{'QUIT'}=\&catchexception;
+$SIG{__DIE__}=\&catchexception;
+
# ------------------------------------ Read httpd access.conf and get variables
open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
@@ -35,6 +60,27 @@ while ($configline=) {
}
close(CONFIG);
+# ----------------------------- Make sure this process is running from user=www
+my $wwwid=getpwnam('www');
+if ($wwwid!=$<) {
+ $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
+ $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
+ system("echo 'User ID mismatch. lond must be run as user www.' |\
+ mailto $emailto -s '$subj' > /dev/null");
+ exit 1;
+}
+
+# --------------------------------------------- Check if other instance running
+
+my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
+
+if (-e $pidfile) {
+ my $lfh=IO::File->new("$pidfile");
+ my $pide=<$lfh>;
+ chomp($pide);
+ if (kill 0 => $pide) { die "already running"; }
+}
+
$PREFORK=4; # number of children to maintain, at least four spare
# ------------------------------------------------------------- Read hosts file
@@ -89,6 +135,7 @@ sub HUPSMAN { # sig
kill 'INT' => keys %children;
close($server); # free up socket
&logthis("CRITICAL: Restarting");
+ unlink("$execdir/logs/lond.pid");
my $execdir=$perlvar{'lonDaemons'};
exec("$execdir/lond"); # here we go again
}
@@ -184,13 +231,37 @@ sub reply {
return $answer;
}
+# -------------------------------------------------------------- Talk to lonsql
+
+sub sqlreply {
+ my ($cmd)=@_;
+ my $answer=subsqlreply($cmd);
+ if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); }
+ return $answer;
+}
+
+sub subsqlreply {
+ my ($cmd)=@_;
+ my $unixsock="mysqlsock";
+ my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
+ my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
+ Type => SOCK_STREAM,
+ Timeout => 10)
+ or return "con_lost";
+ print $sclient "$cmd\n";
+ my $answer=<$sclient>;
+ chomp($answer);
+ if (!$answer) { $answer="con_lost"; }
+ return $answer;
+}
+
# -------------------------------------------- Return path to profile directory
sub propath {
my ($udom,$uname)=@_;
$udom=~s/\W//g;
$uname=~s/\W//g;
- my $subdir=$uname;
+ my $subdir=$uname.'__';
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
return $proname;
@@ -274,6 +345,8 @@ sub make_new_child {
# unblock signals
sigprocmask(SIG_UNBLOCK, $sigset)
or die "Can't unblock SIGINT for fork: $!\n";
+
+ $tmpsnum=0;
# handle connections until we've reached $MAX_CLIENTS_PER_CHILD
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) {
@@ -304,15 +377,18 @@ sub make_new_child {
} else {
&logthis(
"WARNING: $clientip did not reply challenge");
+ print $client "bye\n";
}
} else {
&logthis(
"WARNING: "
."$clientip failed to initialize: >$remotereq< ");
+ print $client "bye\n";
}
} else {
&logthis(
"WARNING: Unknown client $clientip");
+ print $client "bye\n";
}
if ($clientok) {
# ---------------- New known client connecting, could mean machine online again
@@ -414,6 +490,8 @@ sub make_new_child {
my
($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
chomp($npass);
+ $upass=&unescape($upass);
+ $npass=&unescape($npass);
my $proname=propath($udom,$uname);
my $passfilename="$proname/passwd";
if (-e $passfilename) {
@@ -428,7 +506,7 @@ sub make_new_child {
$salt=substr($salt,6,2);
my $ncpass=crypt($npass,$salt);
{ my $pf = IO::File->new(">$passfilename");
- print $pf "internal:$ncpass\n";; }
+ print $pf "internal:$ncpass\n"; }
print $client "ok\n";
} else {
print $client "non_authorized\n";
@@ -442,6 +520,63 @@ sub make_new_child {
} else {
print $client "refused\n";
}
+# -------------------------------------------------------------------- makeuser
+ } elsif ($userinput =~ /^makeuser/) {
+ if ($wasenc==1) {
+ my
+ ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
+ chomp($npass);
+ $npass=&unescape($npass);
+ my $proname=propath($udom,$uname);
+ my $passfilename="$proname/passwd";
+ if (-e $passfilename) {
+ print $client "already_exists\n";
+ } elsif ($udom ne $perlvar{'lonDefDomain'}) {
+ print $client "not_right_domain\n";
+ } else {
+ @fpparts=split(/\//,$proname);
+ $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
+ $fperror='';
+ for ($i=3;$i<=$#fpparts;$i++) {
+ $fpnow.='/'.$fpparts[$i];
+ unless (-e $fpnow) {
+ unless (mkdir($fpnow,0777)) {
+ $fperror="error:$!\n";
+ }
+ }
+ }
+ unless ($fperror) {
+ if ($umode eq 'krb4') {
+ {
+ my $pf = IO::File->new(">$passfilename");
+ print $pf "krb4:$npass\n";
+ }
+ print $client "ok\n";
+ } elsif ($umode eq 'internal') {
+ my $salt=time;
+ $salt=substr($salt,6,2);
+ my $ncpass=crypt($npass,$salt);
+ {
+ my $pf = IO::File->new(">$passfilename");
+ print $pf "internal:$ncpass\n";
+ }
+ print $client "ok\n";
+ } elsif ($umode eq 'none') {
+ {
+ my $pf = IO::File->new(">$passfilename");
+ print $pf "none:\n";
+ }
+ print $client "ok\n";
+ } else {
+ print $client "auth_mode_error\n";
+ }
+ } else {
+ print $client "$fperror\n";
+ }
+ }
+ } else {
+ print $client "refused\n";
+ }
# ------------------------------------------------------------------------ home
} elsif ($userinput =~ /^home/) {
my ($cmd,$udom,$uname)=split(/:/,$userinput);
@@ -479,11 +614,21 @@ sub make_new_child {
$response=$ua->request($request,$transname);
}
if ($response->is_error()) {
- unline($transname);
+ unlink($transname);
my $message=$response->status_line;
&logthis(
"LWP GET: $message for $fname ($remoteurl)");
} else {
+ if ($remoteurl!~/\.meta$/) {
+ my $ua=new LWP::UserAgent;
+ my $mrequest=
+ new HTTP::Request('GET',$remoteurl.'.meta');
+ my $mresponse=
+ $ua->request($mrequest,$fname.'.meta');
+ if ($mresponse->is_error()) {
+ unlink($fname.'.meta');
+ }
+ }
rename($transname,$fname);
}
}
@@ -512,20 +657,42 @@ sub make_new_child {
my $ownership=ishome($fname);
if ($ownership eq 'owner') {
if (-e $fname) {
+ if (-d $fname) {
+ print $client "directory\n";
+ } else {
$now=time;
{
- my $sh=IO::File->new(">$fname.$hostid{$clientip}");
- print $sh "$clientip:$now\n";
+ my $sh;
+ if ($sh=
+ IO::File->new(">$fname.$hostid{$clientip}")) {
+ print $sh "$clientip:$now\n";
+ }
}
$fname=~s/\/home\/httpd\/html\/res/raw/;
$fname="http://$thisserver/".$fname;
print $client "$fname\n";
+ }
} else {
print $client "not_found\n";
}
} else {
print $client "rejected\n";
}
+# ------------------------------------------------------------------------- log
+ } elsif ($userinput =~ /^log/) {
+ my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
+ chomp($what);
+ my $proname=propath($udom,$uname);
+ my $now=time;
+ {
+ my $hfh;
+ if ($hfh=IO::File->new(">>$proname/activity.log")) {
+ print $hfh "$now:$hostid{$clientip}:$what\n";
+ print $client "ok\n";
+ } else {
+ print $client "error:$!\n";
+ }
+ }
# ------------------------------------------------------------------------- put
} elsif ($userinput =~ /^put/) {
my ($cmd,$udom,$uname,$namespace,$what)
@@ -603,7 +770,7 @@ sub make_new_child {
my @queries=split(/\&/,$what);
my $proname=propath($udom,$uname);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
for ($i=0;$i<=$#queries;$i++) {
$qresult.="$hash{$queries[$i]}&";
}
@@ -626,7 +793,7 @@ sub make_new_child {
my @queries=split(/\&/,$what);
my $proname=propath($udom,$uname);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
for ($i=0;$i<=$#queries;$i++) {
$qresult.="$hash{$queries[$i]}&";
}
@@ -688,7 +855,7 @@ sub make_new_child {
$namespace=~s/\W//g;
my $proname=propath($udom,$uname);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
foreach $key (keys %hash) {
$qresult.="$key&";
}
@@ -709,7 +876,7 @@ sub make_new_child {
$namespace=~s/\W//g;
my $proname=propath($udom,$uname);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
foreach $key (keys %hash) {
$qresult.="$key=$hash{$key}&";
}
@@ -751,7 +918,8 @@ sub make_new_child {
$allkeys.=$key.':';
$hash{"$version:$rid:$key"}=$value;
}
- $allkeys=~s/:$//;
+ $hash{"$version:$rid:timestamp"}=$now;
+ $allkeys.='timestamp';
$hash{"$version:keys:$rid"}=$allkeys;
if (untie(%hash)) {
print $client "ok\n";
@@ -773,7 +941,7 @@ sub make_new_child {
chomp($rid);
my $proname=propath($udom,$uname);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) {
my $version=$hash{"version:$rid"};
$qresult.="version=$version&";
my $scope;
@@ -783,7 +951,7 @@ sub make_new_child {
my $key;
$qresult.="$scope:keys=$vkeys&";
foreach $key (@keys) {
- $qresult.="$version:$key=".$hash{"$scope:$rid:$key"}."&";
+ $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
}
}
if (untie(%hash)) {
@@ -795,6 +963,25 @@ sub make_new_child {
} else {
print $client "error:$!\n";
}
+# ------------------------------------------------------------------- querysend
+ } elsif ($userinput =~ /^querysend/) {
+ my ($cmd,$query)=split(/:/,$userinput);
+ $query=~s/\n*$//g;
+ print $client sqlreply("$hostid{$clientip}\&$query").
+ "\n";
+# ------------------------------------------------------------------ queryreply
+ } elsif ($userinput =~ /^queryreply/) {
+ my ($cmd,$id,$reply)=split(/:/,$userinput);
+ my $store;
+ my $execdir=$perlvar{'lonDaemons'};
+ if ($store=IO::File->new(">$execdir/tmp/$id")) {
+ print $store $reply;
+ close $store;
+ print $client "ok\n";
+ }
+ else {
+ print $client "error:$!\n";
+ }
# ----------------------------------------------------------------------- idput
} elsif ($userinput =~ /^idput/) {
my ($cmd,$udom,$what)=split(/:/,$userinput);
@@ -830,7 +1017,7 @@ sub make_new_child {
my $proname="$perlvar{'lonUsersDir'}/$udom/ids";
my @queries=split(/\&/,$what);
my $qresult='';
- if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT,0640)) {
+ if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER,0640)) {
for ($i=0;$i<=$#queries;$i++) {
$qresult.="$hash{$queries[$i]}&";
}
@@ -843,6 +1030,40 @@ sub make_new_child {
} else {
print $client "error:$!\n";
}
+# ---------------------------------------------------------------------- tmpput
+ } elsif ($userinput =~ /^tmpput/) {
+ my ($cmd,$what)=split(/:/,$userinput);
+ my $store;
+ $tmpsnum++;
+ my $id=$$.'_'.$clientip.'_'.$tmpsnum;
+ $id=~s/\W/\_/g;
+ $what=~s/\n//g;
+ my $execdir=$perlvar{'lonDaemons'};
+ if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
+ print $store $what;
+ close $store;
+ print $client "$id\n";
+ }
+ else {
+ print $client "error:$!\n";
+ }
+
+# ---------------------------------------------------------------------- tmpget
+ } elsif ($userinput =~ /^tmpget/) {
+ my ($cmd,$id)=split(/:/,$userinput);
+ chomp($id);
+ $id=~s/\W/\_/g;
+ my $store;
+ my $execdir=$perlvar{'lonDaemons'};
+ if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
+ my $reply=<$store>;
+ print $client "$reply\n";
+ close $store;
+ }
+ else {
+ print $client "error:$!\n";
+ }
+
# -------------------------------------------------------------------------- ls
} elsif ($userinput =~ /^ls/) {
my ($cmd,$ulsdir)=split(/:/,$userinput);
@@ -856,6 +1077,7 @@ sub make_new_child {
} else {
$ulsout='no_such_dir';
}
+ if ($ulsout eq '') { $ulsout='empty'; }
print $client "$ulsout\n";
# ------------------------------------------------------------- unknown command
} else {