version 1.67, 2002/02/06 13:34:21
|
version 1.94, 2002/09/03 02:01:14
|
Line 48
|
Line 48
|
# 12/22 Gerd Kortemeyer |
# 12/22 Gerd Kortemeyer |
# YEAR=2002 |
# YEAR=2002 |
# 01/20/02,02/05 Gerd Kortemeyer |
# 01/20/02,02/05 Gerd Kortemeyer |
|
# 02/05 Guy Albertelli |
|
# 02/07 Scott Harrison |
|
# 02/12 Gerd Kortemeyer |
|
# 02/19 Matthew Hall |
|
# 02/25 Gerd Kortemeyer |
|
# 05/11 Scott Harrison |
### |
### |
|
|
# based on "Perl Cookbook" ISBN 1-56592-243-3 |
# based on "Perl Cookbook" ISBN 1-56592-243-3 |
Line 56
|
Line 62
|
# HUPs |
# HUPs |
# uses IDEA encryption |
# uses IDEA encryption |
|
|
|
use lib '/home/httpd/lib/perl/'; |
|
use LONCAPA::Configuration; |
|
|
use IO::Socket; |
use IO::Socket; |
use IO::File; |
use IO::File; |
use Apache::File; |
use Apache::File; |
Line 65 use Crypt::IDEA;
|
Line 74 use Crypt::IDEA;
|
use LWP::UserAgent(); |
use LWP::UserAgent(); |
use GDBM_File; |
use GDBM_File; |
use Authen::Krb4; |
use Authen::Krb4; |
|
use Authen::Krb5; |
use lib '/home/httpd/lib/perl/'; |
use lib '/home/httpd/lib/perl/'; |
use localauth; |
use localauth; |
|
|
|
my $DEBUG = 0; # Non zero to enable debug log entries. |
|
|
my $status=''; |
my $status=''; |
my $lastlog=''; |
my $lastlog=''; |
|
|
Line 94 sub timeout {
|
Line 106 sub timeout {
|
$SIG{'QUIT'}=\&catchexception; |
$SIG{'QUIT'}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
|
|
# ------------------------------------ Read httpd access.conf and get variables |
# ---------------------------------- Read loncapa_apache.conf and loncapa.conf |
|
&status("Read loncapa_apache.conf and loncapa.conf"); |
open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf"; |
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa_apache.conf', |
|
'loncapa.conf'); |
while ($configline=<CONFIG>) { |
my %perlvar=%{$perlvarref}; |
if ($configline =~ /PerlSetVar/) { |
undef $perlvarref; |
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
|
chomp($varvalue); |
|
$perlvar{$varname}=$varvalue; |
|
} |
|
} |
|
close(CONFIG); |
|
|
|
# ----------------------------- Make sure this process is running from user=www |
# ----------------------------- Make sure this process is running from user=www |
my $wwwid=getpwnam('www'); |
my $wwwid=getpwnam('www'); |
Line 136 open (CONFIG,"$perlvar{'lonTabDir'}/host
|
Line 142 open (CONFIG,"$perlvar{'lonTabDir'}/host
|
|
|
while ($configline=<CONFIG>) { |
while ($configline=<CONFIG>) { |
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
chomp($ip); |
chomp($ip); $ip=~s/\D+$//; |
$hostid{$ip}=$id; |
$hostid{$ip}=$id; |
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
$PREFORK++; |
$PREFORK++; |
Line 155 $server = IO::Socket::INET->new(LocalPor
|
Line 161 $server = IO::Socket::INET->new(LocalPor
|
|
|
# global variables |
# global variables |
|
|
$MAX_CLIENTS_PER_CHILD = 5; # number of clients each child should |
$MAX_CLIENTS_PER_CHILD = 50; # number of clients each child should |
# process |
# process |
%children = (); # keys are current child process IDs |
%children = (); # keys are current child process IDs |
$children = 0; # current number of children |
$children = 0; # current number of children |
Line 211 sub checkchildren {
|
Line 217 sub checkchildren {
|
kill 9 => $_; |
kill 9 => $_; |
$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
$subj="LON: $perlvar{'lonHostID'} killed lond process $_"; |
$subj="LON: $perlvar{'lonHostID'} killed lond process $_"; |
my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null` |
my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; |
$execdir=$perlvar{'lonDaemons'}; |
$execdir=$perlvar{'lonDaemons'}; |
$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_` |
$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_` |
} |
} |
Line 230 sub logthis {
|
Line 236 sub logthis {
|
print $fh "$local ($$): $message\n"; |
print $fh "$local ($$): $message\n"; |
} |
} |
|
|
|
# ------------------------- Conditional log if $DEBUG true. |
|
sub Debug { |
|
my $message = shift; |
|
if($DEBUG) { |
|
&logthis($message); |
|
} |
|
} |
# ------------------------------------------------------------------ Log status |
# ------------------------------------------------------------------ Log status |
|
|
sub logstatus { |
sub logstatus { |
Line 296 sub reconlonc {
|
Line 309 sub reconlonc {
|
if (kill 0 => $loncpid) { |
if (kill 0 => $loncpid) { |
&logthis("lonc at pid $loncpid responding, sending USR1"); |
&logthis("lonc at pid $loncpid responding, sending USR1"); |
kill USR1 => $loncpid; |
kill USR1 => $loncpid; |
sleep 1; |
sleep 5; |
if (-e "$peerfile") { return; } |
if (-e "$peerfile") { return; } |
&logthis("$peerfile still not there, give it another try"); |
&logthis("$peerfile still not there, give it another try"); |
sleep 5; |
sleep 10; |
if (-e "$peerfile") { return; } |
if (-e "$peerfile") { return; } |
&logthis( |
&logthis( |
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
Line 337 sub reply {
|
Line 350 sub reply {
|
if ($answer eq 'con_lost') { |
if ($answer eq 'con_lost') { |
$answer=subreply("ping",$server); |
$answer=subreply("ping",$server); |
if ($answer ne $server) { |
if ($answer ne $server) { |
|
&logthis("sub reply: answer != server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
} |
} |
$answer=subreply($cmd,$server); |
$answer=subreply($cmd,$server); |
Line 475 sub make_new_child {
|
Line 489 sub make_new_child {
|
or die "Can't unblock SIGINT for fork: $!\n"; |
or die "Can't unblock SIGINT for fork: $!\n"; |
|
|
$tmpsnum=0; |
$tmpsnum=0; |
|
#---------------------------------------------------- kerberos 5 initialization |
|
&Authen::Krb5::init_context(); |
|
&Authen::Krb5::init_ets(); |
|
|
# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
&status('Idle, waiting for connection'); |
&status('Idle, waiting for connection'); |
Line 484 sub make_new_child {
|
Line 501 sub make_new_child {
|
# ============================================================================= |
# ============================================================================= |
# do something with the connection |
# do something with the connection |
# ----------------------------------------------------------------------------- |
# ----------------------------------------------------------------------------- |
|
$client->sockopt(SO_KEEPALIVE, 1);# Enable monitoring of |
|
# connection liveness. |
# see if we know client and check for spoof IP by challenge |
# see if we know client and check for spoof IP by challenge |
my $caller=getpeername($client); |
my $caller=getpeername($client); |
my ($port,$iaddr)=unpack_sockaddr_in($caller); |
my ($port,$iaddr)=unpack_sockaddr_in($caller); |
Line 526 sub make_new_child {
|
Line 545 sub make_new_child {
|
} |
} |
if ($clientok) { |
if ($clientok) { |
# ---------------- New known client connecting, could mean machine online again |
# ---------------- New known client connecting, could mean machine online again |
|
|
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
&logthis( |
&logthis( |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
Line 533 sub make_new_child {
|
Line 553 sub make_new_child {
|
# ------------------------------------------------------------ Process requests |
# ------------------------------------------------------------ Process requests |
while (my $userinput=<$client>) { |
while (my $userinput=<$client>) { |
chomp($userinput); |
chomp($userinput); |
|
Debug("Request = $userinput\n"); |
&status('Processing '.$hostid{$clientip}.': '.$userinput); |
&status('Processing '.$hostid{$clientip}.': '.$userinput); |
my $wasenc=0; |
my $wasenc=0; |
alarm(120); |
alarm(120); |
Line 549 sub make_new_child {
|
Line 570 sub make_new_child {
|
} |
} |
$userinput=substr($userinput,0,$cmdlength); |
$userinput=substr($userinput,0,$cmdlength); |
$wasenc=1; |
$wasenc=1; |
} |
|
} |
} |
|
} |
|
|
# ------------------------------------------------------------- Normal commands |
# ------------------------------------------------------------- Normal commands |
# ------------------------------------------------------------------------ ping |
# ------------------------------------------------------------------------ ping |
if ($userinput =~ /^ping/) { |
if ($userinput =~ /^ping/) { |
Line 587 sub make_new_child {
|
Line 609 sub make_new_child {
|
} elsif ($userinput =~ /^currentauth/) { |
} elsif ($userinput =~ /^currentauth/) { |
if ($wasenc==1) { |
if ($wasenc==1) { |
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
my $proname=propath($udom,$uname); |
my $result = GetAuthType($udom, $uname); |
my $passfilename="$proname/passwd"; |
if($result eq "nouser") { |
if (-e $passfilename) { |
print $client "unknown_user\n"; |
my $pf = IO::File->new($passfilename); |
} |
my $realpasswd=<$pf>; |
else { |
chomp($realpasswd); |
print $client "$result\n" |
my ($howpwd,$contentpwd)=split(/:/,$realpasswd); |
} |
my $availablecontent=''; |
|
if ($howpwd eq 'krb4') { |
|
$availablecontent=$contentpwd; |
|
} |
|
print $client "$howpwd:$availablecontent\n"; |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
} else { |
print $client "refused\n"; |
print $client "refused\n"; |
} |
} |
Line 637 sub make_new_child {
|
Line 651 sub make_new_child {
|
$pwdcorrect=!$?; |
$pwdcorrect=!$?; |
} |
} |
} elsif ($howpwd eq 'krb4') { |
} elsif ($howpwd eq 'krb4') { |
|
$null=pack("C",0); |
|
unless ($upass=~/$null/) { |
$pwdcorrect=( |
$pwdcorrect=( |
Authen::Krb4::get_pw_in_tkt($uname,"", |
Authen::Krb4::get_pw_in_tkt($uname,"", |
$contentpwd,'krbtgt',$contentpwd,1, |
$contentpwd,'krbtgt',$contentpwd,1, |
$upass) == 0); |
$upass) == 0); |
|
} else { $pwdcorrect=0; } |
|
} elsif ($howpwd eq 'krb5') { |
|
$null=pack("C",0); |
|
unless ($upass=~/$null/) { |
|
my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd); |
|
my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd; |
|
my $krbserver=&Authen::Krb5::parse_name($krbservice); |
|
my $credentials=&Authen::Krb5::cc_default(); |
|
$credentials->initialize($krbclient); |
|
my $krbreturn = |
|
&Authen::Krb5::get_in_tkt_with_password( |
|
$krbclient,$krbserver,$upass,$credentials); |
|
# unless ($krbreturn) { |
|
# &logthis("Krb5 Error: ". |
|
# &Authen::Krb5::error()); |
|
# } |
|
$pwdcorrect = ($krbreturn == 1); |
|
} else { $pwdcorrect=0; } |
} elsif ($howpwd eq 'localauth') { |
} elsif ($howpwd eq 'localauth') { |
$pwdcorrect=&localauth::localauth($uname,$upass, |
$pwdcorrect=&localauth::localauth($uname,$upass, |
$contentpwd); |
$contentpwd); |
Line 664 sub make_new_child {
|
Line 698 sub make_new_child {
|
chomp($npass); |
chomp($npass); |
$upass=&unescape($upass); |
$upass=&unescape($upass); |
$npass=&unescape($npass); |
$npass=&unescape($npass); |
my $proname=propath($udom,$uname); |
&logthis("Trying to change password for $uname"); |
|
my $proname=propath($udom,$uname); |
my $passfilename="$proname/passwd"; |
my $passfilename="$proname/passwd"; |
if (-e $passfilename) { |
if (-e $passfilename) { |
my $realpasswd; |
my $realpasswd; |
Line 679 sub make_new_child {
|
Line 714 sub make_new_child {
|
my $ncpass=crypt($npass,$salt); |
my $ncpass=crypt($npass,$salt); |
{ my $pf = IO::File->new(">$passfilename"); |
{ my $pf = IO::File->new(">$passfilename"); |
print $pf "internal:$ncpass\n"; } |
print $pf "internal:$ncpass\n"; } |
|
&logthis("Result of password change for $uname: pwchange_success"); |
print $client "ok\n"; |
print $client "ok\n"; |
} else { |
} else { |
print $client "non_authorized\n"; |
print $client "non_authorized\n"; |
} |
} |
} else { |
} elsif ($howpwd eq 'unix') { |
|
# Unix means we have to access /etc/password |
|
# one way or another. |
|
# First: Make sure the current password is |
|
# correct |
|
$contentpwd=(getpwnam($uname))[1]; |
|
my $pwdcorrect = "0"; |
|
my $pwauth_path="/usr/local/sbin/pwauth"; |
|
unless ($contentpwd eq 'x') { |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif (-e $pwauth_path) { |
|
open PWAUTH, "|$pwauth_path" or |
|
die "Cannot invoke authentication"; |
|
print PWAUTH "$uname\n$upass\n"; |
|
close PWAUTH; |
|
$pwdcorrect=!$?; |
|
} |
|
if ($pwdcorrect) { |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
my $pf = IO::File->new("|$execdir/lcpasswd"); |
|
print $pf "$uname\n$npass\n$npass\n"; |
|
close $pf; |
|
my $result = ($?>0 ? 'pwchange_failure' |
|
: 'ok'); |
|
&logthis("Result of password change for $uname: $result"); |
|
print $client "$result\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
print $client "auth_mode_error\n"; |
print $client "auth_mode_error\n"; |
} |
} |
} else { |
} else { |
Line 694 sub make_new_child {
|
Line 760 sub make_new_child {
|
} |
} |
# -------------------------------------------------------------------- makeuser |
# -------------------------------------------------------------------- makeuser |
} elsif ($userinput =~ /^makeuser/) { |
} elsif ($userinput =~ /^makeuser/) { |
|
&Debug("Make user received"); |
my $oldumask=umask(0077); |
my $oldumask=umask(0077); |
if ($wasenc==1) { |
if ($wasenc==1) { |
my |
my |
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
|
&Debug("cmd =".$cmd." $udom =".$udom. |
|
" uname=".$uname); |
chomp($npass); |
chomp($npass); |
$npass=&unescape($npass); |
$npass=&unescape($npass); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $passfilename="$proname/passwd"; |
my $passfilename="$proname/passwd"; |
|
&Debug("Password file created will be:". |
|
$passfilename); |
if (-e $passfilename) { |
if (-e $passfilename) { |
print $client "already_exists\n"; |
print $client "already_exists\n"; |
} elsif ($udom ne $perlvar{'lonDefDomain'}) { |
} elsif ($udom ne $perlvar{'lonDefDomain'}) { |
Line 719 sub make_new_child {
|
Line 790 sub make_new_child {
|
} |
} |
} |
} |
unless ($fperror) { |
unless ($fperror) { |
if ($umode eq 'krb4') { |
my $result=&make_passwd_file($umode,$npass, |
{ |
$passfilename); |
my $pf = IO::File->new(">$passfilename"); |
print $client $result; |
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 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\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 { |
} else { |
print $client "$fperror\n"; |
print $client "$fperror\n"; |
} |
} |
Line 773 sub make_new_child {
|
Line 803 sub make_new_child {
|
umask($oldumask); |
umask($oldumask); |
# -------------------------------------------------------------- changeuserauth |
# -------------------------------------------------------------- changeuserauth |
} elsif ($userinput =~ /^changeuserauth/) { |
} elsif ($userinput =~ /^changeuserauth/) { |
if ($wasenc==1) { |
&Debug("Changing authorization"); |
|
if ($wasenc==1) { |
my |
my |
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
chomp($npass); |
chomp($npass); |
|
&Debug("cmd = ".$cmd." domain= ".$udom. |
|
"uname =".$uname." umode= ".$umode); |
$npass=&unescape($npass); |
$npass=&unescape($npass); |
my $proname=propath($udom,$uname); |
my $proname=&propath($udom,$uname); |
my $passfilename="$proname/passwd"; |
my $passfilename="$proname/passwd"; |
if ($udom ne $perlvar{'lonDefDomain'}) { |
if ($udom ne $perlvar{'lonDefDomain'}) { |
print $client "not_right_domain\n"; |
print $client "not_right_domain\n"; |
} else { |
} else { |
if ($umode eq 'krb4') { |
my $result=&make_passwd_file($umode,$npass, |
{ |
$passfilename); |
my $pf = IO::File->new(">$passfilename"); |
print $client $result; |
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 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\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 { |
} else { |
print $client "refused\n"; |
print $client "refused\n"; |
Line 893 sub make_new_child {
|
Line 885 sub make_new_child {
|
} else { |
} else { |
print $client "rejected\n"; |
print $client "rejected\n"; |
} |
} |
|
# -------------------------------------- fetch a user file from a remote server |
|
} elsif ($userinput =~ /^fetchuserfile/) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my ($udom,$uname,$ufile)=split(/\//,$fname); |
|
my $udir=propath($udom,$uname).'/userfiles'; |
|
unless (-e $udir) { mkdir($udir,0770); } |
|
if (-e $udir) { |
|
$ufile=~s/^[\.\~]+//; |
|
$ufile=~s/\///g; |
|
my $transname=$udir.'/'.$ufile; |
|
my $remoteurl='http://'.$clientip.'/userfiles/'.$fname; |
|
my $response; |
|
{ |
|
my $ua=new LWP::UserAgent; |
|
my $request=new HTTP::Request('GET',"$remoteurl"); |
|
$response=$ua->request($request,$transname); |
|
} |
|
if ($response->is_error()) { |
|
unlink($transname); |
|
my $message=$response->status_line; |
|
&logthis( |
|
"LWP GET: $message for $fname ($remoteurl)"); |
|
print $client "failed\n"; |
|
} else { |
|
print $client "ok\n"; |
|
} |
|
} else { |
|
print $client "not_home\n"; |
|
} |
|
# ------------------------------------------ authenticate access to a user file |
|
} elsif ($userinput =~ /^tokenauthuserfile/) { |
|
my ($cmd,$fname,$session)=split(/:/,$userinput); |
|
chomp($session); |
|
$reply='non_auth'; |
|
if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'. |
|
$session.'.id')) { |
|
while ($line=<ENVIN>) { |
|
if ($line=~/userfile\.$fname\=/) { $reply='ok'; } |
|
} |
|
close(ENVIN); |
|
print $client $reply."\n"; |
|
} else { |
|
print $client "invalid_token\n"; |
|
} |
# ----------------------------------------------------------------- unsubscribe |
# ----------------------------------------------------------------- unsubscribe |
} elsif ($userinput =~ /^unsub/) { |
} elsif ($userinput =~ /^unsub/) { |
my ($cmd,$fname)=split(/:/,$userinput); |
my ($cmd,$fname)=split(/:/,$userinput); |
if (-e $fname) { |
if (-e $fname) { |
if (unlink("$fname.$hostid{$clientip}")) { |
print $client &unsub($client,$fname,$clientip); |
print $client "ok\n"; |
|
} else { |
|
print $client "not_subscribed\n"; |
|
} |
|
} else { |
} else { |
print $client "not_found\n"; |
print $client "not_found\n"; |
} |
} |
# ------------------------------------------------------------------- subscribe |
# ------------------------------------------------------------------- subscribe |
} elsif ($userinput =~ /^sub/) { |
} elsif ($userinput =~ /^sub/) { |
my ($cmd,$fname)=split(/:/,$userinput); |
print $client &subscribe($userinput,$clientip); |
my $ownership=ishome($fname); |
|
if ($ownership eq 'owner') { |
|
if (-e $fname) { |
|
if (-d $fname) { |
|
print $client "directory\n"; |
|
} else { |
|
$now=time; |
|
{ |
|
my $sh; |
|
if ($sh= |
|
IO::File->new(">$fname.$hostid{$clientip}")) { |
|
print $sh "$clientip:$now\n"; |
|
} |
|
} |
|
unless ($fname=~/\.meta$/) { |
|
unlink("$fname.meta.$hostid{$clientip}"); |
|
} |
|
$fname=~s/\/home\/httpd\/html\/res/raw/; |
|
$fname="http://$thisserver/".$fname; |
|
print $client "$fname\n"; |
|
} |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
} else { |
|
print $client "rejected\n"; |
|
} |
|
# ------------------------------------------------------------------------- log |
# ------------------------------------------------------------------------- log |
} elsif ($userinput =~ /^log/) { |
} elsif ($userinput =~ /^log/) { |
my ($cmd,$udom,$uname,$what)=split(/:/,$userinput); |
my ($cmd,$udom,$uname,$what)=split(/:/,$userinput); |
Line 985 sub make_new_child {
|
Line 990 sub make_new_child {
|
} |
} |
# -------------------------------------------------------------------- rolesput |
# -------------------------------------------------------------------- rolesput |
} elsif ($userinput =~ /^rolesput/) { |
} elsif ($userinput =~ /^rolesput/) { |
|
&Debug("rolesput"); |
if ($wasenc==1) { |
if ($wasenc==1) { |
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
=split(/:/,$userinput); |
=split(/:/,$userinput); |
|
&Debug("cmd = ".$cmd." exedom= ".$exedom. |
|
"user = ".$exeuser." udom=".$udom. |
|
"what = ".$what); |
my $namespace='roles'; |
my $namespace='roles'; |
chomp($what); |
chomp($what); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
Line 1004 sub make_new_child {
|
Line 1013 sub make_new_child {
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
foreach $pair (@pairs) { |
foreach $pair (@pairs) { |
($key,$value)=split(/=/,$pair); |
($key,$value)=split(/=/,$pair); |
|
&ManagePermissions($key, $udom, $uname, |
|
&GetAuthType( $udom, |
|
$uname)); |
$hash{$key}=$value; |
$hash{$key}=$value; |
|
|
} |
} |
if (untie(%hash)) { |
if (untie(%hash)) { |
print $client "ok\n"; |
print $client "ok\n"; |
Line 1139 sub make_new_child {
|
Line 1152 sub make_new_child {
|
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $qresult=''; |
my $qresult=''; |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
study($regexp); |
foreach $key (keys %hash) { |
foreach $key (keys %hash) { |
if (eval('$key=~/$regexp/')) { |
my $unescapeKey = &unescape($key); |
|
if (eval('$unescapeKey=~/$regexp/')) { |
$qresult.="$key=$hash{$key}&"; |
$qresult.="$key=$hash{$key}&"; |
} |
} |
} |
} |
if (untie(%hash)) { |
if (untie(%hash)) { |
$qresult=~s/\&$//; |
$qresult=~s/\&$//; |
Line 1227 sub make_new_child {
|
Line 1242 sub make_new_child {
|
} else { |
} else { |
print $client "error:$!\n"; |
print $client "error:$!\n"; |
} |
} |
|
# -------------------------------------------------------------------- chatsend |
|
} elsif ($userinput =~ /^chatsend/) { |
|
my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput); |
|
&chatadd($cdom,$cnum,$newpost); |
|
print $client "ok\n"; |
|
# -------------------------------------------------------------------- chatretr |
|
} elsif ($userinput =~ /^chatretr/) { |
|
my ($cmd,$cdom,$cnum)=split(/\:/,$userinput); |
|
my $reply=''; |
|
foreach (&getchat($cdom,$cnum)) { |
|
$reply.=&escape($_).':'; |
|
} |
|
$reply=~s/\:$//; |
|
print $client $reply."\n"; |
# ------------------------------------------------------------------- querysend |
# ------------------------------------------------------------------- querysend |
} elsif ($userinput =~ /^querysend/) { |
} elsif ($userinput =~ /^querysend/) { |
my ($cmd,$query, |
my ($cmd,$query, |
$custom,$customshow)=split(/:/,$userinput); |
$arg1,$arg2,$arg3)=split(/\:/,$userinput); |
$query=~s/\n*$//g; |
$query=~s/\n*$//g; |
unless ($custom or $customshow) { |
print $client "". |
print $client "". |
|
sqlreply("$hostid{$clientip}\&$query")."\n"; |
|
} |
|
else { |
|
print $client "". |
|
sqlreply("$hostid{$clientip}\&$query". |
sqlreply("$hostid{$clientip}\&$query". |
"\&$custom"."\&$customshow")."\n"; |
"\&$arg1"."\&$arg2"."\&$arg3")."\n"; |
} |
|
# ------------------------------------------------------------------ queryreply |
# ------------------------------------------------------------------ queryreply |
} elsif ($userinput =~ /^queryreply/) { |
} elsif ($userinput =~ /^queryreply/) { |
my ($cmd,$id,$reply)=split(/:/,$userinput); |
my ($cmd,$id,$reply)=split(/:/,$userinput); |
Line 1346 sub make_new_child {
|
Line 1369 sub make_new_child {
|
my $ulsout=''; |
my $ulsout=''; |
my $ulsfn; |
my $ulsfn; |
if (-e $ulsdir) { |
if (-e $ulsdir) { |
if (opendir(LSDIR,$ulsdir)) { |
if(-d $ulsdir) { |
while ($ulsfn=readdir(LSDIR)) { |
if (opendir(LSDIR,$ulsdir)) { |
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
while ($ulsfn=readdir(LSDIR)) { |
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
} |
$ulsout.=$ulsfn.'&'. |
closedir(LSDIR); |
join('&',@ulsstats).':'; |
} |
} |
} else { |
closedir(LSDIR); |
|
} |
|
} else { |
|
my @ulsstats=stat($ulsdir); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
$ulsout='no_such_dir'; |
$ulsout='no_such_dir'; |
} |
} |
if ($ulsout eq '') { $ulsout='empty'; } |
if ($ulsout eq '') { $ulsout='empty'; } |
Line 1381 sub make_new_child {
|
Line 1410 sub make_new_child {
|
$client->close(); |
$client->close(); |
&logthis("<font color=blue>WARNING: " |
&logthis("<font color=blue>WARNING: " |
."Rejected client $clientip, closing connection</font>"); |
."Rejected client $clientip, closing connection</font>"); |
} |
} |
&logthis("<font color=red>CRITICAL: " |
} |
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
|
# ============================================================================= |
# ============================================================================= |
} |
|
|
&logthis("<font color=red>CRITICAL: " |
|
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
# tidy up gracefully and finish |
# tidy up gracefully and finish |
|
|
$client->close(); |
|
$server->close(); |
$server->close(); |
|
|
# this exit is VERY important, otherwise the child will become |
# this exit is VERY important, otherwise the child will become |
Line 1399 sub make_new_child {
|
Line 1428 sub make_new_child {
|
} |
} |
} |
} |
|
|
|
|
|
# |
|
# Checks to see if the input roleput request was to set |
|
# an author role. If so, invokes the lchtmldir script to set |
|
# up a correct public_html |
|
# Parameters: |
|
# request - The request sent to the rolesput subchunk. |
|
# We're looking for /domain/_au |
|
# domain - The domain in which the user is having roles doctored. |
|
# user - Name of the user for which the role is being put. |
|
# authtype - The authentication type associated with the user. |
|
# |
|
sub ManagePermissions |
|
{ |
|
my $request = shift; |
|
my $domain = shift; |
|
my $user = shift; |
|
my $authtype= shift; |
|
|
|
# See if the request is of the form /$domain/_au |
|
|
|
if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput... |
|
my $execdir = $perlvar{'lonDaemons'}; |
|
my $userhome= "/home/$user" ; |
|
Debug("system $execdir/lchtmldir $userhome $system $authtype"); |
|
system("$execdir/lchtmldir $userhome $user $authtype"); |
|
} |
|
} |
|
# |
|
# GetAuthType - Determines the authorization type of a user in a domain. |
|
|
|
# Returns the authorization type or nouser if there is no such user. |
|
# |
|
sub GetAuthType |
|
{ |
|
my $domain = shift; |
|
my $user = shift; |
|
|
|
Debug("GetAuthType( $domain, $user ) \n"); |
|
my $proname = &propath($domain, $user); |
|
my $passwdfile = "$proname/passwd"; |
|
if( -e $passwdfile ) { |
|
my $pf = IO::File->new($passwdfile); |
|
my $realpassword = <$pf>; |
|
chomp($realpassword); |
|
Debug("Password info = $realpassword\n"); |
|
my ($authtype, $contentpwd) = split(/:/, $realpassword); |
|
Debug("Authtype = $authtype, content = $contentpwd\n"); |
|
my $availinfo = ''; |
|
if($authtype eq 'krb4' or $authtype eq 'krb5') { |
|
$availinfo = $contentpwd; |
|
} |
|
|
|
return "$authtype:$availinfo"; |
|
} |
|
else { |
|
Debug("Returning nouser"); |
|
return "nouser"; |
|
} |
|
} |
|
|
|
sub addline { |
|
my ($fname,$hostid,$ip,$newline)=@_; |
|
my $contents; |
|
my $found=0; |
|
my $expr='^'.$hostid.':'.$ip.':'; |
|
$expr =~ s/\./\\\./g; |
|
if ($sh=IO::File->new("$fname.subscription")) { |
|
while (my $subline=<$sh>) { |
|
if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;} |
|
} |
|
$sh->close(); |
|
} |
|
$sh=IO::File->new(">$fname.subscription"); |
|
if ($contents) { print $sh $contents; } |
|
if ($newline) { print $sh $newline; } |
|
$sh->close(); |
|
return $found; |
|
} |
|
|
|
sub getchat { |
|
my ($cdom,$cname)=@_; |
|
my %hash; |
|
my $proname=&propath($cdom,$cname); |
|
my @entries=(); |
|
if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db", |
|
&GDBM_READER(),0640)) { |
|
@entries=map { $_.':'.$hash{$_} } sort keys %hash; |
|
untie %hash; |
|
} |
|
return @entries; |
|
} |
|
|
|
sub chatadd { |
|
my ($cdom,$cname,$newchat)=@_; |
|
my %hash; |
|
my $proname=&propath($cdom,$cname); |
|
my @entries=(); |
|
if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db", |
|
&GDBM_WRCREAT(),0640)) { |
|
@entries=map { $_.':'.$hash{$_} } sort keys %hash; |
|
my $time=time; |
|
my ($lastid)=($entries[$#entries]=~/^(\w+)\:/); |
|
my ($thentime,$idnum)=split(/\_/,$lastid); |
|
my $newid=$time.'_000000'; |
|
if ($thentime==$time) { |
|
$idnum=~s/^0+//; |
|
$idnum++; |
|
$idnum=substr('000000'.$idnum,-6,6); |
|
$newid=$time.'_'.$idnum; |
|
} |
|
$hash{$newid}=$newchat; |
|
my $expired=$time-3600; |
|
foreach (keys %hash) { |
|
my ($thistime)=($_=~/(\d+)\_/); |
|
if ($thistime<$expired) { |
|
delete $hash{$_}; |
|
} |
|
} |
|
untie %hash; |
|
} |
|
} |
|
|
|
sub unsub { |
|
my ($fname,$clientip)=@_; |
|
my $result; |
|
if (unlink("$fname.$hostid{$clientip}")) { |
|
$result="ok\n"; |
|
} else { |
|
$result="not_subscribed\n"; |
|
} |
|
if (-e "$fname.subscription") { |
|
my $found=&addline($fname,$hostid{$clientip},$clientip,''); |
|
if ($found) { $result="ok\n"; } |
|
} else { |
|
if ($result != "ok\n") { $result="not_subscribed\n"; } |
|
} |
|
return $result; |
|
} |
|
|
|
sub subscribe { |
|
my ($userinput,$clientip)=@_; |
|
my $result; |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my $ownership=&ishome($fname); |
|
if ($ownership eq 'owner') { |
|
if (-e $fname) { |
|
if (-d $fname) { |
|
$result="directory\n"; |
|
} else { |
|
if (-e "$fname.$hostid{$clientip}") {&unsub($fname,$clientip);} |
|
$now=time; |
|
my $found=&addline($fname,$hostid{$clientip},$clientip, |
|
"$hostid{$clientip}:$clientip:$now\n"); |
|
if ($found) { $result="$fname\n"; } |
|
# if they were subscribed to only meta data, delete that |
|
# subscription, when you subscribe to a file you also get |
|
# the metadata |
|
unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); } |
|
$fname=~s/\/home\/httpd\/html\/res/raw/; |
|
$fname="http://$thisserver/".$fname; |
|
$result="$fname\n"; |
|
} |
|
} else { |
|
$result="not_found\n"; |
|
} |
|
} else { |
|
$result="rejected\n"; |
|
} |
|
return $result; |
|
} |
|
|
|
sub make_passwd_file { |
|
my ($umode,$npass,$passfilename)=@_; |
|
my $result="ok\n"; |
|
if ($umode eq 'krb4' or $umode eq 'krb5') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "$umode:$npass\n"; |
|
} |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
&Debug("Creating internal auth"); |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd"; |
|
{ |
|
&Debug("Executing external: ".$execpath); |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
} else { |
|
$result="auth_mode_error\n"; |
|
} |
|
return $result; |
|
} |
|
|
# ----------------------------------- POD (plain old documentation, CPAN style) |
# ----------------------------------- POD (plain old documentation, CPAN style) |
|
|
=head1 NAME |
=head1 NAME |
Line 1407 lond - "LON Daemon" Server (port "LOND"
|
Line 1654 lond - "LON Daemon" Server (port "LOND"
|
|
|
=head1 SYNOPSIS |
=head1 SYNOPSIS |
|
|
Should only be run as user=www. Invoked by loncron. |
Usage: B<lond> |
|
|
|
Should only be run as user=www. This is a command-line script which |
|
is invoked by B<loncron>. There is no expectation that a typical user |
|
will manually start B<lond> from the command-line. (In other words, |
|
DO NOT START B<lond> YOURSELF.) |
|
|
=head1 DESCRIPTION |
=head1 DESCRIPTION |
|
|
|
There are two characteristics associated with the running of B<lond>, |
|
PROCESS MANAGEMENT (starting, stopping, handling child processes) |
|
and SERVER-SIDE ACTIVITIES (password authentication, user creation, |
|
subscriptions, etc). These are described in two large |
|
sections below. |
|
|
|
B<PROCESS MANAGEMENT> |
|
|
Preforker - server who forks first. Runs as a daemon. HUPs. |
Preforker - server who forks first. Runs as a daemon. HUPs. |
Uses IDEA encryption |
Uses IDEA encryption |
|
|
=head1 README |
B<lond> forks off children processes that correspond to the other servers |
|
in the network. Management of these processes can be done at the |
|
parent process level or the child process level. |
|
|
|
B<logs/lond.log> is the location of log messages. |
|
|
|
The process management is now explained in terms of linux shell commands, |
|
subroutines internal to this code, and signal assignments: |
|
|
|
=over 4 |
|
|
|
=item * |
|
|
|
PID is stored in B<logs/lond.pid> |
|
|
|
This is the process id number of the parent B<lond> process. |
|
|
|
=item * |
|
|
|
SIGTERM and SIGINT |
|
|
|
Parent signal assignment: |
|
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
|
|
|
Child signal assignment: |
|
$SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also) |
|
(The child dies and a SIGALRM is sent to parent, awaking parent from slumber |
|
to restart a new child.) |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGTERM I<PID> |
|
B<kill> B<-s> SIGINT I<PID> |
|
|
|
Subroutine B<HUNTSMAN>: |
|
This is only invoked for the B<lond> parent I<PID>. |
|
This kills all the children, and then the parent. |
|
The B<lonc.pid> file is cleared. |
|
|
|
=item * |
|
|
|
SIGHUP |
|
|
|
Current bug: |
|
This signal can only be processed the first time |
|
on the parent process. Subsequent SIGHUP signals |
|
have no effect. |
|
|
|
Parent signal assignment: |
|
$SIG{HUP} = \&HUPSMAN; |
|
|
|
Child signal assignment: |
|
none (nothing happens) |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGHUP I<PID> |
|
|
|
Subroutine B<HUPSMAN>: |
|
This is only invoked for the B<lond> parent I<PID>, |
|
This kills all the children, and then the parent. |
|
The B<lond.pid> file is cleared. |
|
|
|
=item * |
|
|
|
SIGUSR1 |
|
|
|
Parent signal assignment: |
|
$SIG{USR1} = \&USRMAN; |
|
|
|
Child signal assignment: |
|
$SIG{USR1}= \&logstatus; |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGUSR1 I<PID> |
|
|
|
Subroutine B<USRMAN>: |
|
When invoked for the B<lond> parent I<PID>, |
|
SIGUSR1 is sent to all the children, and the status of |
|
each connection is logged. |
|
|
|
=item * |
|
|
|
SIGCHLD |
|
|
|
Parent signal assignment: |
|
$SIG{CHLD} = \&REAPER; |
|
|
|
Child signal assignment: |
|
none |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGCHLD I<PID> |
|
|
|
Subroutine B<REAPER>: |
|
This is only invoked for the B<lond> parent I<PID>. |
|
Information pertaining to the child is removed. |
|
The socket port is cleaned up. |
|
|
|
=back |
|
|
|
B<SERVER-SIDE ACTIVITIES> |
|
|
|
Server-side information can be accepted in an encrypted or non-encrypted |
|
method. |
|
|
|
=over 4 |
|
|
|
=item ping |
|
|
|
Query a client in the hosts.tab table; "Are you there?" |
|
|
|
=item pong |
|
|
|
Respond to a ping query. |
|
|
|
=item ekey |
|
|
|
Read in encrypted key, make cipher. Respond with a buildkey. |
|
|
|
=item load |
|
|
|
Respond with CPU load based on a computation upon /proc/loadavg. |
|
|
|
=item currentauth |
|
|
|
Reply with current authentication information (only over an |
|
encrypted channel). |
|
|
|
=item auth |
|
|
|
Only over an encrypted channel, reply as to whether a user's |
|
authentication information can be validated. |
|
|
|
=item passwd |
|
|
|
Allow for a password to be set. |
|
|
|
=item makeuser |
|
|
|
Make a user. |
|
|
Not yet written. |
=item passwd |
|
|
|
Allow for authentication mechanism and password to be changed. |
|
|
|
=item home |
|
|
|
Respond to a question "are you the home for a given user?" |
|
|
|
=item update |
|
|
|
Update contents of a subscribed resource. |
|
|
|
=item unsubscribe |
|
|
|
The server is unsubscribing from a resource. |
|
|
|
=item subscribe |
|
|
|
The server is subscribing to a resource. |
|
|
|
=item log |
|
|
|
Place in B<logs/lond.log> |
|
|
|
=item put |
|
|
|
stores hash in namespace |
|
|
|
=item rolesput |
|
|
|
put a role into a user's environment |
|
|
|
=item get |
|
|
|
returns hash with keys from array |
|
reference filled in from namespace |
|
|
|
=item eget |
|
|
|
returns hash with keys from array |
|
reference filled in from namesp (encrypts the return communication) |
|
|
|
=item rolesget |
|
|
|
get a role from a user's environment |
|
|
|
=item del |
|
|
|
deletes keys out of array from namespace |
|
|
|
=item keys |
|
|
|
returns namespace keys |
|
|
|
=item dump |
|
|
|
dumps the complete (or key matching regexp) namespace into a hash |
|
|
|
=item store |
|
|
|
stores hash permanently |
|
for this url; hashref needs to be given and should be a \%hashname; the |
|
remaining args aren't required and if they aren't passed or are '' they will |
|
be derived from the ENV |
|
|
|
=item restore |
|
|
|
returns a hash for a given url |
|
|
|
=item querysend |
|
|
|
Tells client about the lonsql process that has been launched in response |
|
to a sent query. |
|
|
|
=item queryreply |
|
|
|
Accept information from lonsql and make appropriate storage in temporary |
|
file space. |
|
|
|
=item idput |
|
|
|
Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers |
|
for each student, defined perhaps by the institutional Registrar.) |
|
|
|
=item idget |
|
|
|
Returns usernames corresponding to IDs. (These "IDs" are unique identifiers |
|
for each student, defined perhaps by the institutional Registrar.) |
|
|
|
=item tmpput |
|
|
|
Accept and store information in temporary space. |
|
|
|
=item tmpget |
|
|
|
Send along temporarily stored information. |
|
|
|
=item ls |
|
|
|
List part of a user's directory. |
|
|
|
=item Hanging up (exit or init) |
|
|
|
What to do when a client tells the server that they (the client) |
|
are leaving the network. |
|
|
|
=item unknown command |
|
|
|
If B<lond> is sent an unknown command (not in the list above), |
|
it replys to the client "unknown_cmd". |
|
|
|
=item UNKNOWN CLIENT |
|
|
|
If the anti-spoofing algorithm cannot verify the client, |
|
the client is rejected (with a "refused" message sent |
|
to the client, and the connection is closed. |
|
|
|
=back |
|
|
=head1 PREREQUISITES |
=head1 PREREQUISITES |
|
|
Line 1429 Crypt::IDEA
|
Line 1944 Crypt::IDEA
|
LWP::UserAgent() |
LWP::UserAgent() |
GDBM_File |
GDBM_File |
Authen::Krb4 |
Authen::Krb4 |
|
Authen::Krb5 |
|
|
=head1 COREQUISITES |
=head1 COREQUISITES |
|
|
Line 1441 linux
|
Line 1957 linux
|
Server/Process |
Server/Process |
|
|
=cut |
=cut |
|
|
|
|
|
|
|
|