--- loncom/lonnet/perl/lonnet.pm 2000/05/01 20:19:38 1.12
+++ loncom/lonnet/perl/lonnet.pm 2002/05/16 17:21:05 1.220
@@ -1,36 +1,105 @@
# The LearningOnline Network
# TCP networking package
#
-# Functions for use by content handlers:
+# $Id: lonnet.pm,v 1.220 2002/05/16 17:21:05 harris41 Exp $
#
-# plaintext(short) : plain text explanation of short term
-# allowed(short,url) : returns codes for allowed actions
-# appendenv(hash) : adds hash to session environment
-# store(hash) : stores hash permanently for this url
-# restore : returns hash for this url
-# eget(namesp,array) : returns hash with keys from array filled in from namesp
-# get(namesp,array) : returns hash with keys from array filled in from namesp
-# put(namesp,hash) : stores hash in namesp
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
#
# 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
# 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
# 11/8,11/16,11/18,11/22,11/23,12/22,
# 01/06,01/13,02/24,02/28,02/29,
# 03/01,03/02,03/06,03/07,03/13,
-# 04/05 Gerd Kortemeyer
+# 04/05,05/29,05/31,06/01,
+# 06/05,06/26 Gerd Kortemeyer
+# 06/26 Ben Tyszka
+# 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
+# 08/14 Ben Tyszka
+# 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
+# 10/04 Gerd Kortemeyer
+# 10/04 Guy Albertelli
+# 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
+# 10/30,10/31,
+# 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
+# 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
+# 05/01/01 Guy Albertelli
+# 05/01,06/01,09/01 Gerd Kortemeyer
+# 09/01 Guy Albertelli
+# 09/01,10/01,11/01 Gerd Kortemeyer
+# YEAR=2001
+# 02/27/01 Scott Harrison
+# 3/2 Gerd Kortemeyer
+# 3/15,3/19 Scott Harrison
+# 3/19,3/20 Gerd Kortemeyer
+# 3/22,3/27,4/2,4/16,4/17 Scott Harrison
+# 5/26,5/28 Gerd Kortemeyer
+# 5/30 H. K. Ng
+# 6/1 Gerd Kortemeyer
+# July Guy Albertelli
+# 8/4,8/7,8/8,8/9,8/11,8/16,8/17,8/18,8/20,8/23,9/20,9/21,9/26,
+# 10/2 Gerd Kortemeyer
+# 10/5,10/10,11/13,11/15 Scott Harrison
+# 11/17,11/20,11/22,11/29 Gerd Kortemeyer
+# 12/5 Matthew Hall
+# 12/5 Guy Albertelli
+# 12/6,12/7,12/12 Gerd Kortemeyer
+# 12/18 Scott Harrison
+# 12/21,12/22,12/27,12/28 Gerd Kortemeyer
+# YEAR=2002
+# 1/4,2/4,2/7 Gerd Kortemeyer
+#
+###
package Apache::lonnet;
use strict;
use Apache::File;
use LWP::UserAgent();
+use HTTP::Headers;
use vars
-qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp $readit);
+qw(%perlvar %hostname %homecache %hostip %spareid %hostdom
+ %libserv %pr %prp %metacache %packagetab
+ %courselogs %accesshash $processmarker $dumpcount
+ %coursedombuf %coursehombuf %courseresdatacache);
use IO::Socket;
+use GDBM_File;
use Apache::Constants qw(:common :http);
+use HTML::LCParser;
+use Fcntl qw(:flock);
+my $readit;
# --------------------------------------------------------------------- Logging
+sub logtouch {
+ my $execdir=$perlvar{'lonDaemons'};
+ unless (-e "$execdir/logs/lonnet.log") {
+ my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
+ close $fh;
+ }
+ my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
+ chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
+}
+
sub logthis {
my $message=shift;
my $execdir=$perlvar{'lonDaemons'};
@@ -68,10 +137,25 @@ sub subreply {
sub reply {
my ($cmd,$server)=@_;
+ unless (defined($hostname{$server})) { return 'no_such_host'; }
my $answer=subreply($cmd,$server);
- if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
- if (($answer=~/^error:/) || ($answer=~/^refused/) ||
- ($answer=~/^rejected/)) {
+ if ($answer eq 'con_lost') {
+ sleep 5;
+ $answer=subreply($cmd,$server);
+ if ($answer eq 'con_lost') {
+ &logthis("Second attempt con_lost on $server");
+ my $peerfile="$perlvar{'lonSockDir'}/$server";
+ my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
+ Type => SOCK_STREAM,
+ Timeout => 10)
+ or return "con_lost";
+ &logthis("Killing socket");
+ print $client "close_connection_exit\n";
+ sleep 5;
+ $answer=subreply($cmd,$server);
+ }
+ }
+ if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
&logthis("<font color=blue>WARNING:".
" $cmd to $server returned $answer</font>");
}
@@ -111,6 +195,11 @@ sub reconlonc {
sub critical {
my ($cmd,$server)=@_;
+ unless ($hostname{$server}) {
+ &logthis("<font color=blue>WARNING:".
+ " Critical message to unknown server ($server)</font>");
+ return 'no_such_host';
+ }
my $answer=reply($cmd,$server);
if ($answer eq 'con_lost') {
my $pingreply=reply('ping',$server);
@@ -160,19 +249,44 @@ sub critical {
sub appenv {
my %newenv=@_;
+ foreach (keys %newenv) {
+ if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
+ &logthis("<font color=blue>WARNING: ".
+ "Attempt to modify environment ".$_." to ".$newenv{$_}
+ .'</font>');
+ delete($newenv{$_});
+ } else {
+ $ENV{$_}=$newenv{$_};
+ }
+ }
+
+ my $lockfh;
+ unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
+ return 'error: '.$!;
+ }
+ unless (flock($lockfh,LOCK_EX)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain exclusive lock in appenv: '.$!);
+ $lockfh->close();
+ return 'error: '.$!;
+ }
+
my @oldenv;
{
my $fh;
unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
- return 'error';
+ return 'error: '.$!;
}
@oldenv=<$fh>;
+ $fh->close();
}
for (my $i=0; $i<=$#oldenv; $i++) {
chomp($oldenv[$i]);
if ($oldenv[$i] ne '') {
my ($name,$value)=split(/=/,$oldenv[$i]);
- $newenv{$name}=$value;
+ unless (defined($newenv{$name})) {
+ $newenv{$name}=$value;
+ }
}
}
{
@@ -184,6 +298,52 @@ sub appenv {
foreach $newname (keys %newenv) {
print $fh "$newname=$newenv{$newname}\n";
}
+ $fh->close();
+ }
+
+ $lockfh->close();
+ return 'ok';
+}
+# ----------------------------------------------------- Delete from Environment
+
+sub delenv {
+ my $delthis=shift;
+ my %newenv=();
+ if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
+ &logthis("<font color=blue>WARNING: ".
+ "Attempt to delete from environment ".$delthis);
+ return 'error';
+ }
+ my @oldenv;
+ {
+ my $fh;
+ unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
+ return 'error';
+ }
+ unless (flock($fh,LOCK_SH)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain shared lock in delenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
+ @oldenv=<$fh>;
+ $fh->close();
+ }
+ {
+ my $fh;
+ unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
+ return 'error';
+ }
+ unless (flock($fh,LOCK_EX)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain exclusive lock in delenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
+ foreach (@oldenv) {
+ unless ($_=~/^$delthis/) { print $fh $_; }
+ }
+ $fh->close();
}
return 'ok';
}
@@ -204,11 +364,85 @@ sub spareserver {
return $spareserver;
}
+# --------------------------------------------- Try to change a user's password
+
+sub changepass {
+ my ($uname,$udom,$currentpass,$newpass,$server)=@_;
+ $currentpass = &escape($currentpass);
+ $newpass = &escape($newpass);
+ my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
+ $server);
+ if (! $answer) {
+ &logthis("No reply on password change request to $server ".
+ "by $uname in domain $udom.");
+ } elsif ($answer =~ "^ok") {
+ &logthis("$uname in $udom successfully changed their password ".
+ "on $server.");
+ } elsif ($answer =~ "^pwchange_failure") {
+ &logthis("$uname in $udom was unable to change their password ".
+ "on $server. The action was blocked by either lcpasswd ".
+ "or pwchange");
+ } elsif ($answer =~ "^non_authorized") {
+ &logthis("$uname in $udom did not get their password correct when ".
+ "attempting to change it on $server.");
+ } elsif ($answer =~ "^auth_mode_error") {
+ &logthis("$uname in $udom attempted to change their password despite ".
+ "not being locally or internally authenticated on $server.");
+ } elsif ($answer =~ "^unknown_user") {
+ &logthis("$uname in $udom attempted to change their password ".
+ "on $server but were unable to because $server is not ".
+ "their home server.");
+ } elsif ($answer =~ "^refused") {
+ &logthis("$server refused to change $uname in $udom password because ".
+ "it was sent an unencrypted request to change the password.");
+ }
+ return $answer;
+}
+
+# ----------------------- Try to determine user's current authentication scheme
+
+sub queryauthenticate {
+ my ($uname,$udom)=@_;
+ if (($perlvar{'lonRole'} eq 'library') &&
+ ($udom eq $perlvar{'lonDefDomain'})) {
+ my $answer=reply("encrypt:currentauth:$udom:$uname",
+ $perlvar{'lonHostID'});
+ unless ($answer eq 'unknown_user' or $answer eq 'refused') {
+ if (length($answer)) {
+ return $answer;
+ }
+ else {
+ &logthis("User $uname at $udom lacks an authentication mechanism");
+ return 'no_host';
+ }
+ }
+ }
+
+ my $tryserver;
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $answer=reply("encrypt:currentauth:$udom:$uname",$tryserver);
+ unless ($answer eq 'unknown_user' or $answer eq 'refused') {
+ if (length($answer)) {
+ return $answer;
+ }
+ else {
+ &logthis("User $uname at $udom lacks an authentication mechanism");
+ return 'no_host';
+ }
+ }
+ }
+ }
+ &logthis("User $uname at $udom lacks an authentication mechanism");
+ return 'no_host';
+}
+
# --------- Try to authenticate user from domain's lib servers (first this one)
sub authenticate {
my ($uname,$upass,$udom)=@_;
$upass=escape($upass);
+ $uname=~s/\W//g;
if (($perlvar{'lonRole'} eq 'library') &&
($udom eq $perlvar{'lonDefDomain'})) {
my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
@@ -265,6 +499,111 @@ sub homeserver {
return 'no_host';
}
+# ------------------------------------- Find the usernames behind a list of IDs
+
+sub idget {
+ my ($udom,@ids)=@_;
+ my %returnhash=();
+
+ my $tryserver;
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $idlist=join('&',@ids);
+ $idlist=~tr/A-Z/a-z/;
+ my $reply=&reply("idget:$udom:".$idlist,$tryserver);
+ my @answer=();
+ if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
+ @answer=split(/\&/,$reply);
+ } ;
+ my $i;
+ for ($i=0;$i<=$#ids;$i++) {
+ if ($answer[$i]) {
+ $returnhash{$ids[$i]}=$answer[$i];
+ }
+ }
+ }
+ }
+ return %returnhash;
+}
+
+# ------------------------------------- Find the IDs behind a list of usernames
+
+sub idrget {
+ my ($udom,@unames)=@_;
+ my %returnhash=();
+ foreach (@unames) {
+ $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
+ }
+ return %returnhash;
+}
+
+# ------------------------------- Store away a list of names and associated IDs
+
+sub idput {
+ my ($udom,%ids)=@_;
+ my %servers=();
+ foreach (keys %ids) {
+ my $uhom=&homeserver($_,$udom);
+ if ($uhom ne 'no_host') {
+ my $id=&escape($ids{$_});
+ $id=~tr/A-Z/a-z/;
+ my $unam=&escape($_);
+ if ($servers{$uhom}) {
+ $servers{$uhom}.='&'.$id.'='.$unam;
+ } else {
+ $servers{$uhom}=$id.'='.$unam;
+ }
+ &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
+ }
+ }
+ foreach (keys %servers) {
+ &critical('idput:'.$udom.':'.$servers{$_},$_);
+ }
+}
+
+# ------------------------------------- Find the section of student in a course
+
+sub usection {
+ my ($udom,$unam,$courseid)=@_;
+ $courseid=~s/\_/\//g;
+ $courseid=~s/^(\w)/\/$1/;
+ foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
+ &homeserver($unam,$udom)))) {
+ my ($key,$value)=split(/\=/,$_);
+ $key=&unescape($key);
+ if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+ my $section=$1;
+ if ($key eq $courseid.'_st') { $section=''; }
+ my ($dummy,$end,$start)=split(/\_/,&unescape($value));
+ my $now=time;
+ my $notactive=0;
+ if ($start) {
+ if ($now<$start) { $notactive=1; }
+ }
+ if ($end) {
+ if ($now>$end) { $notactive=1; }
+ }
+ unless ($notactive) { return $section; }
+ }
+ }
+ return '-1';
+}
+
+# ------------------------------------- Read an entry from a user's environment
+
+sub userenvironment {
+ my ($udom,$unam,@what)=@_;
+ my %returnhash=();
+ my @answer=split(/\&/,
+ &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
+ &homeserver($unam,$udom)));
+ my $i;
+ for ($i=0;$i<=$#what;$i++) {
+ $returnhash{$what[$i]}=&unescape($answer[$i]);
+ }
+ return %returnhash;
+}
+
# ----------------------------- Subscribe to a resource, return URL if possible
sub subscribe {
@@ -277,6 +616,9 @@ sub subscribe {
return 'not_found';
}
my $answer=reply("sub:$fname",$home);
+ if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
+ $answer.=' by '.$home;
+ }
return $answer;
}
@@ -284,17 +626,22 @@ sub subscribe {
sub repcopy {
my $filename=shift;
+ $filename=~s/\/+/\//g;
+ if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }
my $transname="$filename.in.transfer";
+ if ((-e $filename) || (-e $transname)) { return OK; }
my $remoteurl=subscribe($filename);
- if ($remoteurl eq 'con_lost') {
- &logthis("Subscribe returned con_lost: $filename");
+ if ($remoteurl =~ /^con_lost by/) {
+ &logthis("Subscribe returned $remoteurl: $filename");
return HTTP_SERVICE_UNAVAILABLE;
} elsif ($remoteurl eq 'not_found') {
&logthis("Subscribe returned not_found: $filename");
return HTTP_NOT_FOUND;
- } elsif ($remoteurl eq 'forbidden') {
- &logthis("Subscribe returned forbidden: $filename");
+ } elsif ($remoteurl =~ /^rejected by/) {
+ &logthis("Subscribe returned $remoteurl: $filename");
return FORBIDDEN;
+ } elsif ($remoteurl eq 'directory') {
+ return OK;
} else {
my @parts=split(/\//,$filename);
my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
@@ -319,42 +666,606 @@ sub repcopy {
." LWP get: $message: $filename</font>");
return HTTP_SERVICE_UNAVAILABLE;
} else {
+ if ($remoteurl!~/\.meta$/) {
+ my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
+ my $mresponse=$ua->request($mrequest,$filename.'.meta');
+ if ($mresponse->is_error()) {
+ unlink($filename.'.meta');
+ &logthis(
+ "<font color=yellow>INFO: No metadata: $filename</font>");
+ }
+ }
rename($transname,$filename);
return OK;
}
}
}
+# --------------------------------------------------------- Server Side Include
+
+sub ssi {
+
+ my ($fn,%form)=@_;
+
+ my $ua=new LWP::UserAgent;
+
+ my $request;
+
+ if (%form) {
+ $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
+ $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
+ } else {
+ $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
+ }
+
+ $request->header(Cookie => $ENV{'HTTP_COOKIE'});
+ my $response=$ua->request($request);
+
+ return $response->content;
+}
+
+# ------------------------------------------------------------------------- Log
+
+sub log {
+ my ($dom,$nam,$hom,$what)=@_;
+ return critical("log:$dom:$nam:$what",$hom);
+}
+
+# ------------------------------------------------------------------ Course Log
+
+sub flushcourselogs {
+ &logthis('Flushing course log buffers');
+ foreach (keys %courselogs) {
+ my $crsid=$_;
+ if (&reply('log:'.$coursedombuf{$crsid}.':'.
+ &escape($courselogs{$crsid}),
+ $coursehombuf{$crsid}) eq 'ok') {
+ delete $courselogs{$crsid};
+ } else {
+ &logthis('Failed to flush log buffer for '.$crsid);
+ if (length($courselogs{$crsid})>40000) {
+ &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
+ " exceeded maximum size, deleting.</font>");
+ delete $courselogs{$crsid};
+ }
+ }
+ }
+ &logthis('Flushing access logs');
+ foreach (keys %accesshash) {
+ my $entry=$_;
+ $entry=~/\_\_\_(\w+)\/(\w+)\/(.*)\_\_\_(\w+)$/;
+ my %temphash=($entry => $accesshash{$entry});
+ if (&Apache::lonnet::put('resevaldata',\%temphash,$1,$2) eq 'ok') {
+ delete $accesshash{$entry};
+ }
+ }
+ $dumpcount++;
+}
+
+sub courselog {
+ my $what=shift;
+ $what=time.':'.$what;
+ unless ($ENV{'request.course.id'}) { return ''; }
+ $coursedombuf{$ENV{'request.course.id'}}=
+ $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
+ $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+ $coursehombuf{$ENV{'request.course.id'}}=
+ $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+ if (defined $courselogs{$ENV{'request.course.id'}}) {
+ $courselogs{$ENV{'request.course.id'}}.='&'.$what;
+ } else {
+ $courselogs{$ENV{'request.course.id'}}.=$what;
+ }
+ if (length($courselogs{$ENV{'request.course.id'}})>4048) {
+ &flushcourselogs();
+ }
+}
+
+sub courseacclog {
+ my $fnsymb=shift;
+ unless ($ENV{'request.course.id'}) { return ''; }
+ my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
+ if ($fnsymb=~/(problem|exam|quiz|assess|survey|form)$/) {
+ $what.=':POST';
+ foreach (keys %ENV) {
+ if ($_=~/^form\.(.*)/) {
+ $what.=':'.$1.'='.$ENV{$_};
+ }
+ }
+ }
+ &courselog($what);
+}
+
+sub countacc {
+ my $url=&declutter(shift);
+ unless ($ENV{'request.course.id'}) { return ''; }
+ $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
+ my $key=$processmarker.'_'.$dumpcount.'___'.$url.'___count';
+ if (defined($accesshash{$key})) {
+ $accesshash{$key}++;
+ } else {
+ $accesshash{$key}=1;
+ }
+}
+
+# ----------------------------------------------------------- Check out an item
+
+sub checkout {
+ my ($symb,$tuname,$tudom,$tcrsid)=@_;
+ my $now=time;
+ my $lonhost=$perlvar{'lonHostID'};
+ my $infostr=&escape(
+ $tuname.'&'.
+ $tudom.'&'.
+ $tcrsid.'&'.
+ $symb.'&'.
+ $now.'&'.$ENV{'REMOTE_ADDR'});
+ my $token=&reply('tmpput:'.$infostr,$lonhost);
+ if ($token=~/^error\:/) {
+ &logthis("<font color=blue>WARNING: ".
+ "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
+ "</font>");
+ return '';
+ }
+
+ $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
+ $token=~tr/a-z/A-Z/;
+
+ my %infohash=('resource.0.outtoken' => $token,
+ 'resource.0.checkouttime' => $now,
+ 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
+
+ unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
+ return '';
+ } else {
+ &logthis("<font color=blue>WARNING: ".
+ "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
+ "</font>");
+ }
+
+ if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
+ &escape('Checkout '.$infostr.' - '.
+ $token)) ne 'ok') {
+ return '';
+ } else {
+ &logthis("<font color=blue>WARNING: ".
+ "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
+ "</font>");
+ }
+ return $token;
+}
+
+# ------------------------------------------------------------ Check in an item
+
+sub checkin {
+ my $token=shift;
+ my $now=time;
+ my ($ta,$tb,$lonhost)=split(/\*/,$token);
+ $lonhost=~tr/A-Z/a-z/;
+ my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
+ $dtoken=~s/\W/\_/g;
+ my ($tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
+ split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
+
+ unless (($tuname) && ($tudom)) {
+ &logthis('Check in '.$token.' ('.$dtoken.') failed');
+ return '';
+ }
+
+ unless (&allowed('mgr',$tcrsid)) {
+ &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
+ $ENV{'user.name'}.' - '.$ENV{'user.domain'});
+ return '';
+ }
+
+ my %infohash=('resource.0.intoken' => $token,
+ 'resource.0.checkintime' => $now,
+ 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
+
+ unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
+ return '';
+ }
+
+ if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
+ &escape('Checkin - '.$token)) ne 'ok') {
+ return '';
+ }
+
+ return ($symb,$tuname,$tudom,$tcrsid);
+}
+
+# --------------------------------------------- Set Expire Date for Spreadsheet
+
+sub expirespread {
+ my ($uname,$udom,$stype,$usymb)=@_;
+ my $cid=$ENV{'request.course.id'};
+ if ($cid) {
+ my $now=time;
+ my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
+ return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
+ $ENV{'course.'.$cid.'.num'}.
+ ':nohist_expirationdates:'.
+ &escape($key).'='.$now,
+ $ENV{'course.'.$cid.'.home'})
+ }
+ return 'ok';
+}
+
+# ----------------------------------------------------- Devalidate Spreadsheets
+
+sub devalidate {
+ my $symb=shift;
+ my $cid=$ENV{'request.course.id'};
+ if ($cid) {
+ my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
+ my $status=
+ &del('nohist_calculatedsheet',
+ [$key.'studentcalc'],
+ $ENV{'course.'.$cid.'.domain'},
+ $ENV{'course.'.$cid.'.num'})
+ .' '.
+ &del('nohist_calculatedsheets_'.$cid,
+ [$key.'assesscalc:'.$symb]);
+ unless ($status eq 'ok ok') {
+ &logthis('Could not devalidate spreadsheet '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
+ $symb.': '.$status);
+ }
+ }
+}
+
+sub arrayref2str {
+ my ($arrayref) = @_;
+ my $result='_ARRAY_REF__';
+ foreach my $elem (@$arrayref) {
+ if (ref($elem) eq 'ARRAY') {
+ $result.=&escape(&arrayref2str($elem)).'&';
+ } elsif (ref($elem) eq 'HASH') {
+ $result.=&escape(&hashref2str($elem)).'&';
+ } elsif (ref($elem)) {
+ &logthis("Got a ref of ".(ref($elem))." skipping.");
+ } else {
+ $result.=&escape($elem).'&';
+ }
+ }
+ $result=~s/\&$//;
+ return $result;
+}
+
+sub hash2str {
+ my (%hash) = @_;
+ my $result=&hashref2str(\%hash);
+ $result=~s/^_HASH_REF__//;
+ return $result;
+}
+
+sub hashref2str {
+ my ($hashref)=@_;
+ my $result='_HASH_REF__';
+ foreach (keys(%$hashref)) {
+ if (ref($_) eq 'ARRAY') {
+ $result.=&escape(&arrayref2str($_)).'=';
+ } elsif (ref($_) eq 'HASH') {
+ $result.=&escape(&hashref2str($_)).'=';
+ } elsif (ref($_)) {
+ &logthis("Got a ref of ".(ref($_))." skipping.");
+ } else {
+ $result.=&escape($_).'=';
+ }
+
+ if (ref($$hashref{$_}) eq 'ARRAY') {
+ $result.=&escape(&arrayref2str($$hashref{$_})).'&';
+ } elsif (ref($$hashref{$_}) eq 'HASH') {
+ $result.=&escape(&hashref2str($$hashref{$_})).'&';
+ } elsif (ref($$hashref{$_})) {
+ &logthis("Got a ref of ".(ref($$hashref{$_}))." skipping.");
+ } else {
+ $result.=&escape($$hashref{$_}).'&';
+ }
+ }
+ $result=~s/\&$//;
+ return $result;
+}
+
+sub str2hash {
+ my ($string) = @_;
+ my %returnhash;
+ foreach (split(/\&/,$string)) {
+ my ($name,$value)=split(/\=/,$_);
+ $name=&unescape($name);
+ $value=&unescape($value);
+ if ($value =~ /^_HASH_REF__/) {
+ $value =~ s/^_HASH_REF__//;
+ my %hash=&str2hash($value);
+ $value=\%hash;
+ } elsif ($value =~ /^_ARRAY_REF__/) {
+ $value =~ s/^_ARRAY_REF__//;
+ my @array=&str2array($value);
+ $value=\@array;
+ }
+ $returnhash{$name}=$value;
+ }
+ return (%returnhash);
+}
+
+sub str2array {
+ my ($string) = @_;
+ my @returnarray;
+ foreach my $value (split(/\&/,$string)) {
+ $value=&unescape($value);
+ if ($value =~ /^_HASH_REF__/) {
+ $value =~ s/^_HASH_REF__//;
+ my %hash=&str2hash($value);
+ $value=\%hash;
+ } elsif ($value =~ /^_ARRAY_REF__/) {
+ $value =~ s/^_ARRAY_REF__//;
+ my @array=&str2array($value);
+ $value=\@array;
+ }
+ push(@returnarray,$value);
+ }
+ return (@returnarray);
+}
+
+# -------------------------------------------------------------------Temp Store
+
+sub tmpreset {
+ my ($symb,$namespace,$domain,$stuname) = @_;
+ if (!$symb) {
+ $symb=&symbread();
+ if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
+ }
+ $symb=escape($symb);
+
+ if (!$namespace) { $namespace=$ENV{'request.state'}; }
+ $namespace=~s/\//\_/g;
+ $namespace=~s/\W//g;
+
+ #FIXME needs to do something for /pub resources
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+ my $path=$perlvar{'lonDaemons'}.'/tmp';
+ my %hash;
+ if (tie(%hash,'GDBM_File',
+ $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
+ &GDBM_WRCREAT,0640)) {
+ foreach my $key (keys %hash) {
+ if ($key=~ /:$symb/) {
+ delete($hash{$key});
+ }
+ }
+ }
+}
+
+sub tmpstore {
+ my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
+
+ if (!$symb) {
+ $symb=&symbread();
+ if (!$symb) { $symb= $ENV{'request.url'}; }
+ }
+ $symb=escape($symb);
+
+ if (!$namespace) {
+ # I don't think we would ever want to store this for a course.
+ # it seems this will only be used if we don't have a course.
+ #$namespace=$ENV{'request.course.id'};
+ #if (!$namespace) {
+ $namespace=$ENV{'request.state'};
+ #}
+ }
+ $namespace=~s/\//\_/g;
+ $namespace=~s/\W//g;
+#FIXME needs to do something for /pub resources
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+ my $now=time;
+ my %hash;
+ my $path=$perlvar{'lonDaemons'}.'/tmp';
+ if (tie(%hash,'GDBM_File',
+ $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
+ &GDBM_WRCREAT,0640)) {
+ $hash{"version:$symb"}++;
+ my $version=$hash{"version:$symb"};
+ my $allkeys='';
+ foreach my $key (keys(%$storehash)) {
+ $allkeys.=$key.':';
+ $hash{"$version:$symb:$key"}=$$storehash{$key};
+ }
+ $hash{"$version:$symb:timestamp"}=$now;
+ $allkeys.='timestamp';
+ $hash{"$version:keys:$symb"}=$allkeys;
+ if (untie(%hash)) {
+ return 'ok';
+ } else {
+ return "error:$!";
+ }
+ } else {
+ return "error:$!";
+ }
+}
+
+# -----------------------------------------------------------------Temp Restore
+
+sub tmprestore {
+ my ($symb,$namespace,$domain,$stuname) = @_;
+
+ if (!$symb) {
+ $symb=&symbread();
+ if (!$symb) { $symb= $ENV{'request.url'}; }
+ }
+ $symb=escape($symb);
+
+ if (!$namespace) { $namespace=$ENV{'request.state'}; }
+ #FIXME needs to do something for /pub resources
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+
+ my %returnhash;
+ $namespace=~s/\//\_/g;
+ $namespace=~s/\W//g;
+ my %hash;
+ my $path=$perlvar{'lonDaemons'}.'/tmp';
+ if (tie(%hash,'GDBM_File',
+ $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
+ &GDBM_READER,0640)) {
+ my $version=$hash{"version:$symb"};
+ $returnhash{'version'}=$version;
+ my $scope;
+ for ($scope=1;$scope<=$version;$scope++) {
+ my $vkeys=$hash{"$scope:keys:$symb"};
+ my @keys=split(/:/,$vkeys);
+ my $key;
+ $returnhash{"$scope:keys"}=$vkeys;
+ foreach $key (@keys) {
+ $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
+ $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
+ }
+ }
+ if (!(untie(%hash))) {
+ return "error:$!";
+ }
+ } else {
+ return "error:$!";
+ }
+ return %returnhash;
+}
+
# ----------------------------------------------------------------------- Store
sub store {
- my %storehash=shift;
- my $command=;
+ my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
+ my $home='';
+
+ if ($stuname) { $home=&homeserver($stuname,$domain); }
+
+ $symb=&symbclean($symb);
+ if (!$symb) { unless ($symb=&symbread()) { return ''; } }
+
+ &devalidate($symb);
+
+ $symb=escape($symb);
+ if (!$namespace) {
+ unless ($namespace=$ENV{'request.course.id'}) {
+ return '';
+ }
+ }
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+ if (!$home) { $home=$ENV{'user.home'}; }
my $namevalue='';
- map {
- $namevalue.=escape($_).'='.escape($storehash{$_}).'&';
- } keys %storehash;
+ foreach (keys %$storehash) {
+ $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
+ }
$namevalue=~s/\&$//;
- return reply("store:$ENV{'user.domain'}:$ENV{'user.name'}:"
- ."$ENV{'user.class'}:$ENV{'request.filename'}:$namevalue",
- "$ENV{'user.home'}");
+ &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
+ return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
+}
+
+# -------------------------------------------------------------- Critical Store
+
+sub cstore {
+ my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
+ my $home='';
+
+ if ($stuname) { $home=&homeserver($stuname,$domain); }
+
+ $symb=&symbclean($symb);
+ if (!$symb) { unless ($symb=&symbread()) { return ''; } }
+
+ &devalidate($symb);
+
+ $symb=escape($symb);
+ if (!$namespace) {
+ unless ($namespace=$ENV{'request.course.id'}) {
+ return '';
+ }
+ }
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+ if (!$home) { $home=$ENV{'user.home'}; }
+
+ my $namevalue='';
+ foreach (keys %$storehash) {
+ $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
+ }
+ $namevalue=~s/\&$//;
+ &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
+ return critical
+ ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
}
# --------------------------------------------------------------------- Restore
sub restore {
- my $answer=reply("restore:$ENV{'user.domain'}:$ENV{'user.name'}:"
- ."$ENV{'user.class'}:$ENV{'request.filename'}",
- "$ENV{'user.home'}");
+ my ($symb,$namespace,$domain,$stuname) = @_;
+ my $home='';
+
+ if ($stuname) { $home=&homeserver($stuname,$domain); }
+
+ if (!$symb) {
+ unless ($symb=escape(&symbread())) { return ''; }
+ } else {
+ $symb=&escape(&symbclean($symb));
+ }
+ if (!$namespace) {
+ unless ($namespace=$ENV{'request.course.id'}) {
+ return '';
+ }
+ }
+ if (!$domain) { $domain=$ENV{'user.domain'}; }
+ if (!$stuname) { $stuname=$ENV{'user.name'}; }
+ if (!$home) { $home=$ENV{'user.home'}; }
+ my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
+
my %returnhash=();
- map {
+ foreach (split(/\&/,$answer)) {
my ($name,$value)=split(/\=/,$_);
$returnhash{&unescape($name)}=&unescape($value);
- } split(/\&/,$answer);
- return $returnhash;
+ }
+ my $version;
+ for ($version=1;$version<=$returnhash{'version'};$version++) {
+ foreach (split(/\:/,$returnhash{$version.':keys'})) {
+ $returnhash{$_}=$returnhash{$version.':'.$_};
+ }
+ }
+ return %returnhash;
+}
+
+# ---------------------------------------------------------- Course Description
+
+sub coursedescription {
+ my $courseid=shift;
+ $courseid=~s/^\///;
+ $courseid=~s/\_/\//g;
+ my ($cdomain,$cnum)=split(/\//,$courseid);
+ my $chome=&homeserver($cnum,$cdomain);
+ if ($chome ne 'no_host') {
+ my %returnhash=&dump('environment',$cdomain,$cnum);
+ if (!exists($returnhash{'con_lost'})) {
+ my $normalid=$cdomain.'_'.$cnum;
+ my %envhash=();
+ $returnhash{'home'}= $chome;
+ $returnhash{'domain'} = $cdomain;
+ $returnhash{'num'} = $cnum;
+ while (my ($name,$value) = each %returnhash) {
+ $envhash{'course.'.$normalid.'.'.$name}=$value;
+ }
+ $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
+ $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
+ $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
+ $envhash{'course.'.$normalid.'.last_cache'}=time;
+ $envhash{'course.'.$normalid.'.home'}=$chome;
+ $envhash{'course.'.$normalid.'.domain'}=$cdomain;
+ $envhash{'course.'.$normalid.'.num'}=$cnum;
+ &appenv(%envhash);
+ return %returnhash;
+ }
+ }
+ return ();
}
-# -------------------------------------------------------- Get user priviledges
+# -------------------------------------------------------- Get user privileges
sub rolesinit {
my ($domain,$username,$authhost)=@_;
@@ -362,15 +1273,18 @@ sub rolesinit {
if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
my %allroles=();
my %thesepriv=();
- my $userroles='';
my $now=time;
+ my $userroles="user.login.time=$now\n";
my $thesestr;
if ($rolesdump ne '') {
- map {
- if ($_!~/rolesdef\&/) {
+ foreach (split(/&/,$rolesdump)) {
+ if ($_!~/^rolesdef\&/) {
my ($area,$role)=split(/=/,$_);
+ $area=~s/\_\w\w$//;
my ($trole,$tend,$tstart)=split(/_/,$role);
+ $userroles.='user.role.'.$trole.'.'.$area.'='.
+ $tstart.'.'.$tend."\n";
if ($tend!=0) {
if ($tend<$now) {
$trole='';
@@ -382,58 +1296,70 @@ sub rolesinit {
}
}
if (($area ne '') && ($trole ne '')) {
- $userroles.='user.role.'.$trole.'.'.$area.'='.
- $tstart.'.'.$tend."\n";
+ my $spec=$trole.'.'.$area;
my ($tdummy,$tdomain,$trest)=split(/\//,$area);
if ($trole =~ /^cr\//) {
my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
my $homsvr=homeserver($rauthor,$rdomain);
if ($hostname{$homsvr} ne '') {
my $roledef=
- reply("get:$rdomain:$rauthor:roles:rolesdef&$rrole",
+ reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
$homsvr);
if (($roledef ne 'con_lost') && ($roledef ne '')) {
my ($syspriv,$dompriv,$coursepriv)=
- split(/&&/,$roledef);
- $allroles{'/'}.=':'.$syspriv;
+ split(/\_/,unescape($roledef));
+ $allroles{'cm./'}.=':'.$syspriv;
+ $allroles{$spec.'./'}.=':'.$syspriv;
if ($tdomain ne '') {
- $allroles{'/'.$tdomain.'/'}.=':'.$dompriv;
+ $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
+ $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
if ($trest ne '') {
- $allroles{$area}.=':'.$coursepriv;
+ $allroles{'cm.'.$area}.=':'.$coursepriv;
+ $allroles{$spec.'.'.$area}.=':'.$coursepriv;
}
}
}
}
} else {
- $allroles{'/'}.=':'.$pr{$trole.':s'};
+ $allroles{'cm./'}.=':'.$pr{$trole.':s'};
+ $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
if ($tdomain ne '') {
- $allroles{'/'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
+ $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
+ $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
if ($trest ne '') {
- $allroles{$area}.=':'.$pr{$trole.':c'};
+ $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
+ $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
}
}
}
}
}
- } split(/&/,$rolesdump);
- map {
+ }
+ my $adv=0;
+ my $author=0;
+ foreach (keys %allroles) {
%thesepriv=();
- map {
+ if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
+ if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
+ foreach (split(/:/,$allroles{$_})) {
if ($_ ne '') {
- my ($priviledge,$restrictions)=split(/&/,$_);
+ my ($privilege,$restrictions)=split(/&/,$_);
if ($restrictions eq '') {
- $thesepriv{$priviledge}='F';
+ $thesepriv{$privilege}='F';
} else {
- if ($thesepriv{$priviledge} ne 'F') {
- $thesepriv{$priviledge}.=$restrictions;
+ if ($thesepriv{$privilege} ne 'F') {
+ $thesepriv{$privilege}.=$restrictions;
}
}
}
- } split(/:/,$allroles{$_});
+ }
$thesestr='';
- map { $thesestr.=':'.$_.'&'.$thesepriv{$_}; } keys %thesepriv;
+ foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
$userroles.='user.priv.'.$_.'='.$thesestr."\n";
- } keys %allroles;
+ }
+ $userroles.='user.adv='.$adv."\n".
+ 'user.author='.$author."\n";
+ $ENV{'user.adv'}=$adv;
}
return $userroles;
}
@@ -441,73 +1367,366 @@ sub rolesinit {
# --------------------------------------------------------------- get interface
sub get {
- my ($namespace,@storearr)=@_;
+ my ($namespace,$storearr,$udomain,$uname)=@_;
my $items='';
- map {
+ foreach (@$storearr) {
$items.=escape($_).'&';
- } @storearr;
+ }
$items=~s/\&$//;
- my $rep=reply("get:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
- $ENV{'user.home'});
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
+
+ my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
my @pairs=split(/\&/,$rep);
my %returnhash=();
- map {
+ my $i=0;
+ foreach (@$storearr) {
+ $returnhash{$_}=unescape($pairs[$i]);
+ $i++;
+ }
+ return %returnhash;
+}
+
+# --------------------------------------------------------------- del interface
+
+sub del {
+ my ($namespace,$storearr,$udomain,$uname)=@_;
+ my $items='';
+ foreach (@$storearr) {
+ $items.=escape($_).'&';
+ }
+ $items=~s/\&$//;
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
+
+ return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
+}
+
+# -------------------------------------------------------------- dump interface
+
+sub dump {
+ my ($namespace,$udomain,$uname,$regexp)=@_;
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
+ if ($regexp) {
+ $regexp=&escape($regexp);
+ } else {
+ $regexp='.';
+ }
+ my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
+ my @pairs=split(/\&/,$rep);
+ my %returnhash=();
+ foreach (@pairs) {
my ($key,$value)=split(/=/,$_);
- $returnhash{unespace($key)}=unescape($value);
- } @pairs;
+ $returnhash{unescape($key)}=unescape($value);
+ }
return %returnhash;
}
# --------------------------------------------------------------- put interface
sub put {
- my ($namespace,%storehash)=@_;
+ my ($namespace,$storehash,$udomain,$uname)=@_;
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
+ my $items='';
+ foreach (keys %$storehash) {
+ $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
+ }
+ $items=~s/\&$//;
+ return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
+}
+
+# ------------------------------------------------------ critical put interface
+
+sub cput {
+ my ($namespace,$storehash,$udomain,$uname)=@_;
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
my $items='';
- map {
- $items.=escape($_).'='.escape($storehash{$_}).'&';
- } keys %storehash;
+ foreach (keys %$storehash) {
+ $items.=escape($_).'='.escape($$storehash{$_}).'&';
+ }
$items=~s/\&$//;
- return reply("put:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
- $ENV{'user.home'});
+ return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
}
# -------------------------------------------------------------- eget interface
sub eget {
- my ($namespace,@storearr)=@_;
+ my ($namespace,$storearr,$udomain,$uname)=@_;
my $items='';
- map {
+ foreach (@$storearr) {
$items.=escape($_).'&';
- } @storearr;
+ }
$items=~s/\&$//;
- my $rep=reply("eget:$ENV{'user.domain'}:$ENV{'user.name'}:$namespace:$items",
- $ENV{'user.home'});
+ if (!$udomain) { $udomain=$ENV{'user.domain'}; }
+ if (!$uname) { $uname=$ENV{'user.name'}; }
+ my $uhome=&homeserver($uname,$udomain);
+ my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
my @pairs=split(/\&/,$rep);
my %returnhash=();
- map {
- my ($key,$value)=split(/=/,$_);
- $returnhash{unespace($key)}=unescape($value);
- } @pairs;
+ my $i=0;
+ foreach (@$storearr) {
+ $returnhash{$_}=unescape($pairs[$i]);
+ $i++;
+ }
return %returnhash;
}
-# ------------------------------------------------- Check for a user priviledge
+# ------------------------------------------------- Check for a user privilege
sub allowed {
my ($priv,$uri)=@_;
- $uri=~s/^\/res//;
- $uri=~s/^\///;
+
+ my $orguri=$uri;
+ $uri=&declutter($uri);
+
+# Free bre access to adm and meta resources
+
+ if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
+ return 'F';
+ }
+
+# Free bre to public access
+
+ if ($priv eq 'bre') {
+ if (&metadata($uri,'copyright') eq 'public') { return 'F'; }
+ }
+
my $thisallowed='';
- if ($ENV{'user.priv./'}=~/$priv\&([^\:]*)/) {
+ my $statecond=0;
+ my $courseprivid='';
+
+# Course
+
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
$thisallowed.=$1;
}
- if ($ENV{'user.priv./'.(split(/\//,$uri))[0].'/'}=~/$priv\&([^\:]*)/) {
+
+# Domain
+
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
+ =~/$priv\&([^\:]*)/) {
$thisallowed.=$1;
}
- if ($ENV{'user.priv./'.$uri}=~/$priv\&([^\:]*)/) {
+
+# Course: uri itself is a course
+ my $courseuri=$uri;
+ $courseuri=~s/\_(\d)/\/$1/;
+ $courseuri=~s/^([^\/])/\/$1/;
+
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
+ =~/$priv\&([^\:]*)/) {
$thisallowed.=$1;
}
- return $thisallowed;
+
+# Full access at system, domain or course-wide level? Exit.
+
+ if ($thisallowed=~/F/) {
+ return 'F';
+ }
+
+# If this is generating or modifying users, exit with special codes
+
+ if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
+ return $thisallowed;
+ }
+#
+# Gathered so far: system, domain and course wide privileges
+#
+# Course: See if uri or referer is an individual resource that is part of
+# the course
+
+ if ($ENV{'request.course.id'}) {
+ $courseprivid=$ENV{'request.course.id'};
+ if ($ENV{'request.course.sec'}) {
+ $courseprivid.='/'.$ENV{'request.course.sec'};
+ }
+ $courseprivid=~s/\_/\//;
+ my $checkreferer=1;
+ my @uriparts=split(/\//,$uri);
+ my $filename=$uriparts[$#uriparts];
+ my $pathname=$uri;
+ $pathname=~s/\/$filename$//;
+ if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
+ /\&$filename\:([\d\|]+)\&/) {
+ $statecond=$1;
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
+ =~/$priv\&([^\:]*)/) {
+ $thisallowed.=$1;
+ $checkreferer=0;
+ }
+ }
+
+ if ($checkreferer) {
+ my $refuri=$ENV{'httpref.'.$orguri};
+
+ unless ($refuri) {
+ foreach (keys %ENV) {
+ if ($_=~/^httpref\..*\*/) {
+ my $pattern=$_;
+ $pattern=~s/^httpref\.\/res\///;
+ $pattern=~s/\*/\[\^\/\]\+/g;
+ $pattern=~s/\//\\\//g;
+ if ($orguri=~/$pattern/) {
+ $refuri=$ENV{$_};
+ }
+ }
+ }
+ }
+ if ($refuri) {
+ $refuri=&declutter($refuri);
+ my @uriparts=split(/\//,$refuri);
+ my $filename=$uriparts[$#uriparts];
+ my $pathname=$refuri;
+ $pathname=~s/\/$filename$//;
+ if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
+ /\&$filename\:([\d\|]+)\&/) {
+ my $refstatecond=$1;
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
+ =~/$priv\&([^\:]*)/) {
+ $thisallowed.=$1;
+ $uri=$refuri;
+ $statecond=$refstatecond;
+ }
+ }
+ }
+ }
+ }
+
+#
+# Gathered now: all privileges that could apply, and condition number
+#
+#
+# Full or no access?
+#
+
+ if ($thisallowed=~/F/) {
+ return 'F';
+ }
+
+ unless ($thisallowed) {
+ return '';
+ }
+
+# Restrictions exist, deal with them
+#
+# C:according to course preferences
+# R:according to resource settings
+# L:unless locked
+# X:according to user session state
+#
+
+# Possibly locked functionality, check all courses
+# Locks might take effect only after 10 minutes cache expiration for other
+# courses, and 2 minutes for current course
+
+ my $envkey;
+ if ($thisallowed=~/L/) {
+ foreach $envkey (keys %ENV) {
+ if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
+ my $courseid=$2;
+ my $roleid=$1.'.'.$2;
+ $courseid=~s/^\///;
+ my $expiretime=600;
+ if ($ENV{'request.role'} eq $roleid) {
+ $expiretime=120;
+ }
+ my ($cdom,$cnum,$csec)=split(/\//,$courseid);
+ my $prefix='course.'.$cdom.'_'.$cnum.'.';
+ if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
+ &coursedescription($courseid);
+ }
+ if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
+ || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
+ if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},
+ $ENV{'user.host'},
+ 'Locked by res: '.$priv.' for '.$uri.' due to '.
+ $cdom.'/'.$cnum.'/'.$csec.' expire '.
+ $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
+ return '';
+ }
+ }
+ if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
+ || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
+ if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},
+ $ENV{'user.host'},
+ 'Locked by priv: '.$priv.' for '.$uri.' due to '.
+ $cdom.'/'.$cnum.'/'.$csec.' expire '.
+ $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
+ return '';
+ }
+ }
+ }
+ }
+ }
+
+#
+# Rest of the restrictions depend on selected course
+#
+
+ unless ($ENV{'request.course.id'}) {
+ return '1';
+ }
+
+#
+# Now user is definitely in a course
+#
+
+
+# Course preferences
+
+ if ($thisallowed=~/C/) {
+ my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
+ if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
+ =~/$rolecode/) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
+ 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
+ $ENV{'request.course.id'});
+ return '';
+ }
+ }
+
+# Resource preferences
+
+ if ($thisallowed=~/R/) {
+ my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
+ my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
+ if (-e $filename) {
+ my @content;
+ {
+ my $fh=Apache::File->new($filename);
+ @content=<$fh>;
+ }
+ if (join('',@content)=~
+ /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
+ 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
+ return '';
+
+ }
+ }
+ }
+
+# Restricted by state?
+
+ if ($thisallowed=~/X/) {
+ if (&condval($statecond)) {
+ return '2';
+ } else {
+ return '';
+ }
+ }
+
+ return 'F';
}
# ----------------------------------------------------------------- Define Role
@@ -515,24 +1734,1044 @@ sub allowed {
sub definerole {
if (allowed('mcr','/')) {
my ($rolename,$sysrole,$domrole,$courole)=@_;
+ foreach (split('/',$sysrole)) {
+ my ($crole,$cqual)=split(/\&/,$_);
+ if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
+ if ($pr{'cr:s'}=~/$crole\&/) {
+ if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
+ return "refused:s:$crole&$cqual";
+ }
+ }
+ }
+ foreach (split('/',$domrole)) {
+ my ($crole,$cqual)=split(/\&/,$_);
+ if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
+ if ($pr{'cr:d'}=~/$crole\&/) {
+ if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
+ return "refused:d:$crole&$cqual";
+ }
+ }
+ }
+ foreach (split('/',$courole)) {
+ my ($crole,$cqual)=split(/\&/,$_);
+ if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
+ if ($pr{'cr:c'}=~/$crole\&/) {
+ if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
+ return "refused:c:$crole&$cqual";
+ }
+ }
+ }
my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
"$ENV{'user.domain'}:$ENV{'user.name'}:".
- "rolesdef&$rolename=$sysrole&&$domrole&&$courole";
+ "rolesdef_$rolename=".
+ escape($sysrole.'_'.$domrole.'_'.$courole);
return reply($command,$ENV{'user.home'});
} else {
return 'refused';
}
}
+# ---------------- Make a metadata query against the network of library servers
+
+sub metadata_query {
+ my ($query,$custom,$customshow)=@_;
+ my %rhash;
+ for my $server (keys %libserv) {
+ unless ($custom or $customshow) {
+ my $reply=&reply("querysend:".&escape($query),$server);
+ $rhash{$server}=$reply;
+ }
+ else {
+ my $reply=&reply("querysend:".&escape($query).':'.
+ &escape($custom).':'.&escape($customshow),
+ $server);
+ $rhash{$server}=$reply;
+ }
+ }
+ return \%rhash;
+}
+
# ------------------------------------------------------------------ Plain Text
sub plaintext {
- return $prp{$_};
+ my $short=shift;
+ return $prp{$short};
}
# ----------------------------------------------------------------- Assign Role
sub assignrole {
+ my ($udom,$uname,$url,$role,$end,$start)=@_;
+ my $mrole;
+ if ($role =~ /^cr\//) {
+ unless (&allowed('ccr',$url)) {
+ &logthis('Refused custom assignrole: '.
+ $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ return 'refused';
+ }
+ $mrole='cr';
+ } else {
+ my $cwosec=$url;
+ $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
+ unless (&allowed('c'.$role,$cwosec)) {
+ &logthis('Refused assignrole: '.
+ $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ return 'refused';
+ }
+ $mrole=$role;
+ }
+ my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
+ "$udom:$uname:$url".'_'."$mrole=$role";
+ if ($end) { $command.='_'.$end; }
+ if ($start) {
+ if ($end) {
+ $command.='_'.$start;
+ } else {
+ $command.='_0_'.$start;
+ }
+ }
+ return &reply($command,&homeserver($uname,$udom));
+}
+
+# -------------------------------------------------- Modify user authentication
+# Overrides without validation
+
+sub modifyuserauth {
+ my ($udom,$uname,$umode,$upass)=@_;
+ my $uhome=&homeserver($uname,$udom);
+ unless (&allowed('mau',$udom)) { return 'refused'; }
+ &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
+ $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
+ &escape($upass),$uhome);
+ &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
+ 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
+ '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
+ &log($udom,,$uname,$uhome,
+ 'Authentication changed by '.$ENV{'user.domain'}.', '.
+ $ENV{'user.name'}.', '.$umode.
+ '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
+ unless ($reply eq 'ok') {
+ &logthis('Authentication mode error: '.$reply);
+ return 'error: '.$reply;
+ }
+ return 'ok';
+}
+
+# --------------------------------------------------------------- Modify a user
+
+sub modifyuser {
+ my ($udom, $uname, $uid,
+ $umode, $upass, $first,
+ $middle, $last, $gene,
+ $forceid, $desiredhome)=@_;
+ $udom=~s/\W//g;
+ $uname=~s/\W//g;
+ &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
+ $umode.', '.$first.', '.$middle.', '.
+ $last.', '.$gene.'(forceid: '.$forceid.')'.
+ (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
+ ' desiredhome not specified').
+ ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ my $uhome=&homeserver($uname,$udom);
+# ----------------------------------------------------------------- Create User
+ if (($uhome eq 'no_host') && ($umode) && ($upass)) {
+ my $unhome='';
+ if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
+ $unhome = $desiredhome;
+ } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
+ $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+ } else { # load balancing routine for determining $unhome
+ my $tryserver;
+ my $loadm=10000000;
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $answer=reply('load',$tryserver);
+ if (($answer=~/\d+/) && ($answer<$loadm)) {
+ $loadm=$answer;
+ $unhome=$tryserver;
+ }
+ }
+ }
+ }
+ if (($unhome eq '') || ($unhome eq 'no_host')) {
+ return 'error: unable to find a home server for '.$uname.
+ ' in domain '.$udom;
+ }
+ my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
+ &escape($upass),$unhome);
+ unless ($reply eq 'ok') {
+ return 'error: '.$reply;
+ }
+ $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
+ return 'error: verify home';
+ }
+ } # End of creation of new user
+# ---------------------------------------------------------------------- Add ID
+ if ($uid) {
+ $uid=~tr/A-Z/a-z/;
+ my %uidhash=&idrget($udom,$uname);
+ if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
+ && (!$forceid)) {
+ unless ($uid eq $uidhash{$uname}) {
+ return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
+ }
+ } else {
+ &idput($udom,($uname => $uid));
+ }
+ }
+# -------------------------------------------------------------- Add names, etc
+ my %names=&get('environment',
+ ['firstname','middlename','lastname','generation'],
+ $udom,$uname);
+ if ($names{'firstname'} =~ m/^error:.*/) { %names=(); }
+ if ($first) { $names{'firstname'} = $first; }
+ if ($middle) { $names{'middlename'} = $middle; }
+ if ($last) { $names{'lastname'} = $last; }
+ if ($gene) { $names{'generation'} = $gene; }
+ my $reply = &put('environment', \%names, $udom,$uname);
+ if ($reply ne 'ok') { return 'error: '.$reply; }
+ &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
+ $umode.', '.$first.', '.$middle.', '.
+ $last.', '.$gene.' by '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ return 'ok';
+}
+
+# -------------------------------------------------------------- Modify student
+
+sub modifystudent {
+ my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
+ $end,$start,$forceid,$desiredhome)=@_;
+ my $cid='';
+ unless ($cid=$ENV{'request.course.id'}) {
+ return 'not_in_class';
+ }
+# --------------------------------------------------------------- Make the user
+ my $reply=&modifyuser
+ ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
+ $desiredhome);
+ unless ($reply eq 'ok') { return $reply; }
+ my $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: no such user';
+ }
+# -------------------------------------------------- Add student to course list
+ $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
+ $ENV{'course.'.$cid.'.num'}.':classlist:'.
+ &escape($uname.':'.$udom).'='.
+ &escape($end.':'.$start),
+ $ENV{'course.'.$cid.'.home'});
+ unless (($reply eq 'ok') || ($reply eq 'delayed')) {
+ return 'error: '.$reply;
+ }
+# ---------------------------------------------------- Add student role to user
+ my $uurl='/'.$cid;
+ $uurl=~s/\_/\//g;
+ if ($usec) {
+ $uurl.='/'.$usec;
+ }
+ return &assignrole($udom,$uname,$uurl,'st',$end,$start);
+}
+
+# ------------------------------------------------- Write to course preferences
+
+sub writecoursepref {
+ my ($courseid,%prefs)=@_;
+ $courseid=~s/^\///;
+ $courseid=~s/\_/\//g;
+ my ($cdomain,$cnum)=split(/\//,$courseid);
+ my $chome=homeserver($cnum,$cdomain);
+ if (($chome eq '') || ($chome eq 'no_host')) {
+ return 'error: no such course';
+ }
+ my $cstring='';
+ foreach (keys %prefs) {
+ $cstring.=escape($_).'='.escape($prefs{$_}).'&';
+ }
+ $cstring=~s/\&$//;
+ return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
+}
+
+# ---------------------------------------------------------- Make/modify course
+
+sub createcourse {
+ my ($udom,$description,$url)=@_;
+ $url=&declutter($url);
+ my $cid='';
+ unless (&allowed('ccc',$ENV{'user.domain'})) {
+ return 'refused';
+ }
+ unless ($udom eq $ENV{'user.domain'}) {
+ return 'refused';
+ }
+# ------------------------------------------------------------------- Create ID
+ my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
+ unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+# ----------------------------------------------- Make sure that does not exist
+ my $uhome=&homeserver($uname,$udom);
+ unless (($uhome eq '') || ($uhome eq 'no_host')) {
+ $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
+ unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+ $uhome=&homeserver($uname,$udom);
+ unless (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: unable to generate unique course-ID';
+ }
+ }
+# ------------------------------------------------------------- Make the course
+ my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
+ $ENV{'user.home'});
+ unless ($reply eq 'ok') { return 'error: '.$reply; }
+ $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: no such course';
+ }
+ &writecoursepref($udom.'_'.$uname,
+ ('description' => $description,
+ 'url' => $url));
+ return '/'.$udom.'/'.$uname;
+}
+
+# ---------------------------------------------------------- Assign Custom Role
+
+sub assigncustomrole {
+ my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
+ return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
+ $end,$start);
+}
+
+# ----------------------------------------------------------------- Revoke Role
+
+sub revokerole {
+ my ($udom,$uname,$url,$role)=@_;
+ my $now=time;
+ return &assignrole($udom,$uname,$url,$role,$now);
+}
+
+# ---------------------------------------------------------- Revoke Custom Role
+
+sub revokecustomrole {
+ my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
+ my $now=time;
+ return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
+}
+
+# ------------------------------------------------------------ Directory lister
+
+sub dirlist {
+ my $uri=shift;
+ $uri=~s/^\///;
+ $uri=~s/\/$//;
+ my ($res,$udom,$uname,@rest)=split(/\//,$uri);
+ if ($udom) {
+ if ($uname) {
+ my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
+ homeserver($uname,$udom));
+ return split(/:/,$listing);
+ } else {
+ my $tryserver;
+ my %allusers=();
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
+ $tryserver);
+ if (($listing ne 'no_such_dir') && ($listing ne 'empty')
+ && ($listing ne 'con_lost')) {
+ foreach (split(/:/,$listing)) {
+ my ($entry,@stat)=split(/&/,$_);
+ $allusers{$entry}=1;
+ }
+ }
+ }
+ }
+ my $alluserstr='';
+ foreach (sort keys %allusers) {
+ $alluserstr.=$_.'&user:';
+ }
+ $alluserstr=~s/:$//;
+ return split(/:/,$alluserstr);
+ }
+ } else {
+ my $tryserver;
+ my %alldom=();
+ foreach $tryserver (keys %libserv) {
+ $alldom{$hostdom{$tryserver}}=1;
+ }
+ my $alldomstr='';
+ foreach (sort keys %alldom) {
+ $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
+ }
+ $alldomstr=~s/:$//;
+ return split(/:/,$alldomstr);
+ }
+}
+
+# -------------------------------------------------------- Value of a Condition
+
+sub directcondval {
+ my $number=shift;
+ if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
+ return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
+ } else {
+ return 2;
+ }
+}
+
+sub condval {
+ my $condidx=shift;
+ my $result=0;
+ my $allpathcond='';
+ foreach (split(/\|/,$condidx)) {
+ if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
+ $allpathcond.=
+ '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
+ }
+ }
+ $allpathcond=~s/\|$//;
+ if ($ENV{'request.course.id'}) {
+ if ($allpathcond) {
+ my $operand='|';
+ my @stack;
+ foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
+ if ($_ eq '(') {
+ push @stack,($operand,$result)
+ } elsif ($_ eq ')') {
+ my $before=pop @stack;
+ if (pop @stack eq '&') {
+ $result=$result>$before?$before:$result;
+ } else {
+ $result=$result>$before?$result:$before;
+ }
+ } elsif (($_ eq '&') || ($_ eq '|')) {
+ $operand=$_;
+ } else {
+ my $new=directcondval($_);
+ if ($operand eq '&') {
+ $result=$result>$new?$new:$result;
+ } else {
+ $result=$result>$new?$result:$new;
+ }
+ }
+ }
+ }
+ }
+ return $result;
+}
+
+# --------------------------------------------------- Course Resourcedata Query
+
+sub courseresdata {
+ my ($coursenum,$coursedomain,@which)=@_;
+ my $coursehom=&homeserver($coursenum,$coursedomain);
+ my $hashid=$coursenum.':'.$coursedomain;
+ unless (defined($courseresdatacache{$hashid.'.time'})) {
+ unless (time-$courseresdatacache{$hashid.'.time'}<300) {
+ my $coursehom=&homeserver($coursenum,$coursedomain);
+ if ($coursehom) {
+ my $dumpreply=&reply('dump:'.$coursedomain.':'.$coursenum.
+ ':resourcedata:.',$coursehom);
+ unless ($dumpreply=~/^error\:/) {
+ $courseresdatacache{$hashid.'.time'}=time;
+ $courseresdatacache{$hashid}=$dumpreply;
+ }
+ }
+ }
+ }
+ my @pairs=split(/\&/,$courseresdatacache{$hashid});
+ my %returnhash=();
+ foreach (@pairs) {
+ my ($key,$value)=split(/=/,$_);
+ $returnhash{unescape($key)}=unescape($value);
+ }
+ my $item;
+ foreach $item (@which) {
+ if ($returnhash{$item}) { return $returnhash{$item}; }
+ }
+ return '';
+}
+
+# --------------------------------------------------------- Value of a Variable
+
+sub EXT {
+ my ($varname,$symbparm,$udom,$uname)=@_;
+
+ unless ($varname) { return ''; }
+
+ #get real user name/domain, courseid and symb
+ my $courseid;
+ if (!($uname && $udom)) {
+ (my $cursymb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
+ if (!$symbparm) { $symbparm=$cursymb; }
+ } else {
+ $courseid=$ENV{'request.course.id'};
+ }
+
+ my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
+ my $rest;
+ if ($therest[0]) {
+ $rest=join('.',@therest);
+ } else {
+ $rest='';
+ }
+ my $qualifierrest=$qualifier;
+ if ($rest) { $qualifierrest.='.'.$rest; }
+ my $spacequalifierrest=$space;
+ if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
+ if ($realm eq 'user') {
+# --------------------------------------------------------------- user.resource
+ if ($space eq 'resource') {
+ my %restored=&restore(undef,undef,$udom,$uname);
+ return $restored{$qualifierrest};
+# ----------------------------------------------------------------- user.access
+ } elsif ($space eq 'access') {
+ # FIXME - not supporting calls for a specific user
+ return &allowed($qualifier,$rest);
+# ------------------------------------------ user.preferences, user.environment
+ } elsif (($space eq 'preferences') || ($space eq 'environment')) {
+ if (($uname eq $ENV{'user.name'}) &&
+ ($udom eq $ENV{'user.domain'})) {
+ return $ENV{join('.',('environment',$qualifierrest))};
+ } else {
+ my %returnhash=&userenvironment($udom,$uname,$qualifierrest);
+ return $returnhash{$qualifierrest};
+ }
+# ----------------------------------------------------------------- user.course
+ } elsif ($space eq 'course') {
+ # FIXME - not supporting calls for a specific user
+ return $ENV{join('.',('request.course',$qualifier))};
+# ------------------------------------------------------------------- user.role
+ } elsif ($space eq 'role') {
+ # FIXME - not supporting calls for a specific user
+ my ($role,$where)=split(/\./,$ENV{'request.role'});
+ if ($qualifier eq 'value') {
+ return $role;
+ } elsif ($qualifier eq 'extent') {
+ return $where;
+ }
+# ----------------------------------------------------------------- user.domain
+ } elsif ($space eq 'domain') {
+ return $udom;
+# ------------------------------------------------------------------- user.name
+ } elsif ($space eq 'name') {
+ return $uname;
+# ---------------------------------------------------- Any other user namespace
+ } else {
+ my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
+ my %reply=&get($space,[$item]);
+ return $reply{$item};
+ }
+ } elsif ($realm eq 'request') {
+# ------------------------------------------------------------- request.browser
+ if ($space eq 'browser') {
+ return $ENV{'browser.'.$qualifier};
+# ------------------------------------------------------------ request.filename
+ } else {
+ return $ENV{'request.'.$spacequalifierrest};
+ }
+ } elsif ($realm eq 'course') {
+# ---------------------------------------------------------- course.description
+ return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
+ } elsif ($realm eq 'resource') {
+
+ if ($courseid eq $ENV{'request.course.id'}) {
+
+ #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
+
+# ----------------------------------------------------- Cascading lookup scheme
+ if (!$symbparm) { $symbparm=&symbread(); }
+ my $symbp=$symbparm;
+ my $mapp=(split(/\_\_\_/,$symbp))[0];
+
+ my $symbparm=$symbp.'.'.$spacequalifierrest;
+ my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
+
+ my $section;
+ if (($ENV{'user.name'} eq $uname) &&
+ ($ENV{'user.domain'} eq $udom)) {
+ $section={'request.course.sec'};
+ } else {
+ $section=&usection($udom,$uname,$courseid);
+ }
+
+ my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
+ my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
+ my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
+
+ my $courselevel=$courseid.'.'.$spacequalifierrest;
+ my $courselevelr=$courseid.'.'.$symbparm;
+ my $courselevelm=$courseid.'.'.$mapparm;
+
+# ----------------------------------------------------------- first, check user
+ my %resourcedata=&get('resourcedata',
+ [$courselevelr,$courselevelm,$courselevel],
+ $udom,$uname);
+ if (($resourcedata{$courselevelr}!~/^error\:/) &&
+ ($resourcedata{$courselevelr}!~/^con_lost/)) {
+
+ if ($resourcedata{$courselevelr}) {
+ return $resourcedata{$courselevelr}; }
+ if ($resourcedata{$courselevelm}) {
+ return $resourcedata{$courselevelm}; }
+ if ($resourcedata{$courselevel}) {
+ return $resourcedata{$courselevel}; }
+ } else {
+ if ($resourcedata{$courselevelr}!~/No such file/) {
+ &logthis("<font color=blue>WARNING:".
+ " Trying to get resource data for ".
+ $uname." at ".$udom.": ".
+ $resourcedata{$courselevelr}."</font>");
+ }
+ }
+
+# -------------------------------------------------------- second, check course
+
+ my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
+ $ENV{'course.'.$courseid.'.domain'},
+ ($seclevelr,$seclevelm,$seclevel,
+ $courselevelr,$courselevelm,
+ $courselevel));
+ if ($coursereply) { return $coursereply; }
+
+# ------------------------------------------------------ third, check map parms
+ my %parmhash=();
+ my $thisparm='';
+ if (tie(%parmhash,'GDBM_File',
+ $ENV{'request.course.fn'}.'_parms.db',
+ &GDBM_READER,0640)) {
+ $thisparm=$parmhash{$symbparm};
+ untie(%parmhash);
+ }
+ if ($thisparm) { return $thisparm; }
+ }
+# --------------------------------------------- last, look in resource metadata
+
+ $spacequalifierrest=~s/\./\_/;
+ my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
+ if ($metadata) { return $metadata; }
+ $metadata=&metadata($ENV{'request.filename'},
+ 'parameter_'.$spacequalifierrest);
+ if ($metadata) { return $metadata; }
+
+# ------------------------------------------------------------------ Cascade up
+ unless ($space eq '0') {
+ my ($part,$id)=split(/\_/,$space);
+ if ($id) {
+ my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
+ $symbparm,$udom,$uname);
+ if ($partgeneral) { return $partgeneral; }
+ } else {
+ my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
+ $symbparm,$udom,$uname);
+ if ($resourcegeneral) { return $resourcegeneral; }
+ }
+ }
+
+# ---------------------------------------------------- Any other user namespace
+ } elsif ($realm eq 'environment') {
+# ----------------------------------------------------------------- environment
+ if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
+ return $ENV{'environment.'.$spacequalifierrest};
+ } else {
+ my %returnhash=&userenvironment($udom,$uname,
+ $spacequalifierrest);
+ return $returnhash{$spacequalifierrest};
+ }
+ } elsif ($realm eq 'system') {
+# ----------------------------------------------------------------- system.time
+ if ($space eq 'time') {
+ return time;
+ }
+ }
+ return '';
+}
+
+# ---------------------------------------------------------------- Get metadata
+
+sub metadata {
+ my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
+
+ $uri=&declutter($uri);
+ my $filename=$uri;
+ $uri=~s/\.meta$//;
+#
+# Is the metadata already cached?
+# Look at timestamp of caching
+# Everything is cached by the main uri, libraries are never directly cached
+#
+ unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600) {
+#
+# Is this a recursive call for a library?
+#
+ if ($liburi) {
+ $liburi=&declutter($liburi);
+ $filename=$liburi;
+ }
+ my %metathesekeys=();
+ unless ($filename=~/\.meta$/) { $filename.='.meta'; }
+ my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
+ my $parser=HTML::LCParser->new(\$metastring);
+ my $token;
+ undef %metathesekeys;
+ while ($token=$parser->get_token) {
+ if ($token->[0] eq 'S') {
+ if (defined($token->[2]->{'package'})) {
+#
+# This is a package - get package info
+#
+ my $package=$token->[2]->{'package'};
+ my $keyroot='';
+ if ($prefix) {
+ $keyroot.='_'.$prefix;
+ } else {
+ if (defined($token->[2]->{'part'})) {
+ $keyroot.='_'.$token->[2]->{'part'};
+ }
+ }
+ if (defined($token->[2]->{'id'})) {
+ $keyroot.='_'.$token->[2]->{'id'};
+ }
+ if ($metacache{$uri.':packages'}) {
+ $metacache{$uri.':packages'}.=','.$package.$keyroot;
+ } else {
+ $metacache{$uri.':packages'}=$package.$keyroot;
+ }
+ foreach (keys %packagetab) {
+ if ($_=~/^$package\&/) {
+ my ($pack,$name,$subp)=split(/\&/,$_);
+ my $value=$packagetab{$_};
+ my $part=$keyroot;
+ $part=~s/^\_//;
+ if ($subp eq 'display') {
+ $value.=' [Part: '.$part.']';
+ }
+ my $unikey='parameter'.$keyroot.'_'.$name;
+ $metathesekeys{$unikey}=1;
+ $metacache{$uri.':'.$unikey.'.part'}=$part;
+ unless
+ (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
+ $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
+ }
+ }
+ }
+ } else {
+#
+# This is not a package - some other kind of start tag
+#
+ my $entry=$token->[1];
+ my $unikey;
+ if ($entry eq 'import') {
+ $unikey='';
+ } else {
+ $unikey=$entry;
+ }
+ if ($prefix) {
+ $unikey.=$prefix;
+ } else {
+ if (defined($token->[2]->{'part'})) {
+ $unikey.='_'.$token->[2]->{'part'};
+ }
+ }
+ if (defined($token->[2]->{'id'})) {
+ $unikey.='_'.$token->[2]->{'id'};
+ }
+
+ if ($entry eq 'import') {
+#
+# Importing a library here
+#
+ if (defined($depthcount)) { $depthcount++; } else
+ { $depthcount=0; }
+ if ($depthcount<20) {
+ foreach (split(/\,/,&metadata($uri,'keys',
+ $parser->get_text('/import'),$unikey,
+ $depthcount))) {
+ $metathesekeys{$_}=1;
+ }
+ }
+ } else {
+
+ if (defined($token->[2]->{'name'})) {
+ $unikey.='_'.$token->[2]->{'name'};
+ }
+ $metathesekeys{$unikey}=1;
+ foreach (@{$token->[3]}) {
+ $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
+ }
+ unless (
+ $metacache{$uri.':'.$unikey}=&HTML::Entities::decode($parser->get_text('/'.$entry))
+ ) { $metacache{$uri.':'.$unikey}=
+ $metacache{$uri.':'.$unikey.'.default'};
+ }
+# end of not-a-package not-a-library import
+ }
+# end of not-a-package start tag
+ }
+# the next is the end of "start tag"
+ }
+ }
+ $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
+ $metacache{$uri.':cachedtimestamp'}=time;
+# this is the end of "was not already recently cached
+ }
+ return $metacache{$uri.':'.$what};
+}
+
+# ------------------------------------------------- Update symbolic store links
+
+sub symblist {
+ my ($mapname,%newhash)=@_;
+ $mapname=declutter($mapname);
+ my %hash;
+ if (($ENV{'request.course.fn'}) && (%newhash)) {
+ if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
+ &GDBM_WRCREAT,0640)) {
+ foreach (keys %newhash) {
+ $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
+ }
+ if (untie(%hash)) {
+ return 'ok';
+ }
+ }
+ }
+ return 'error';
+}
+
+# --------------------------------------------------------------- Verify a symb
+
+sub symbverify {
+ my ($symb,$thisfn)=@_;
+ $thisfn=&declutter($thisfn);
+# direct jump to resource in page or to a sequence - will construct own symbs
+ if ($thisfn=~/\.(page|sequence)$/) { return 1; }
+# check URL part
+ my ($map,$resid,$url)=split(/\_\_\_/,$symb);
+ unless (&symbclean($url) eq &symbclean($thisfn)) { return 0; }
+
+ $symb=&symbclean($symb);
+
+ my %bighash;
+ my $okay=0;
+ if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
+ &GDBM_READER,0640)) {
+ my $ids=$bighash{'ids_/res/'.$thisfn};
+ unless ($ids) {
+ $ids=$bighash{'ids_/'.$thisfn};
+ }
+ if ($ids) {
+# ------------------------------------------------------------------- Has ID(s)
+ foreach (split(/\,/,$ids)) {
+ my ($mapid,$resid)=split(/\./,$_);
+ if (
+ &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
+ eq $symb) {
+ $okay=1;
+ }
+ }
+ }
+ untie(%bighash);
+ }
+ return $okay;
+}
+
+# --------------------------------------------------------------- Clean-up symb
+
+sub symbclean {
+ my $symb=shift;
+
+# remove version from map
+ $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
+
+# remove version from URL
+ $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
+
+ return $symb;
+}
+
+# ------------------------------------------------------ Return symb list entry
+
+sub symbread {
+ my $thisfn=shift;
+ unless ($thisfn) {
+ if ($ENV{'request.symb'}) { return &symbclean($ENV{'request.symb'}); }
+ $thisfn=$ENV{'request.filename'};
+ }
+ $thisfn=declutter($thisfn);
+ my %hash;
+ my %bighash;
+ my $syval='';
+ if (($ENV{'request.course.fn'}) && ($thisfn)) {
+ if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
+ &GDBM_READER,0640)) {
+ $syval=$hash{$thisfn};
+ untie(%hash);
+ }
+# ---------------------------------------------------------- There was an entry
+ if ($syval) {
+ unless ($syval=~/\_\d+$/) {
+ unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
+ &appenv('request.ambiguous' => $thisfn);
+ return '';
+ }
+ $syval.=$1;
+ }
+ } else {
+# ------------------------------------------------------- Was not in symb table
+ if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
+ &GDBM_READER,0640)) {
+# ---------------------------------------------- Get ID(s) for current resource
+ my $ids=$bighash{'ids_/res/'.$thisfn};
+ unless ($ids) {
+ $ids=$bighash{'ids_/'.$thisfn};
+ }
+ if ($ids) {
+# ------------------------------------------------------------------- Has ID(s)
+ my @possibilities=split(/\,/,$ids);
+ if ($#possibilities==0) {
+# ----------------------------------------------- There is only one possibility
+ my ($mapid,$resid)=split(/\./,$ids);
+ $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
+ } else {
+# ------------------------------------------ There is more than one possibility
+ my $realpossible=0;
+ foreach (@possibilities) {
+ my $file=$bighash{'src_'.$_};
+ if (&allowed('bre',$file)) {
+ my ($mapid,$resid)=split(/\./,$_);
+ if ($bighash{'map_type_'.$mapid} ne 'page') {
+ $realpossible++;
+ $syval=declutter($bighash{'map_id_'.$mapid}).
+ '___'.$resid;
+ }
+ }
+ }
+ if ($realpossible!=1) { $syval=''; }
+ }
+ }
+ untie(%bighash)
+ }
+ }
+ if ($syval) {
+ return &symbclean($syval.'___'.$thisfn);
+ }
+ }
+ &appenv('request.ambiguous' => $thisfn);
+ return '';
+}
+
+# ---------------------------------------------------------- Return random seed
+
+sub numval {
+ my $txt=shift;
+ $txt=~tr/A-J/0-9/;
+ $txt=~tr/a-j/0-9/;
+ $txt=~tr/K-T/0-9/;
+ $txt=~tr/k-t/0-9/;
+ $txt=~tr/U-Z/0-5/;
+ $txt=~tr/u-z/0-5/;
+ $txt=~s/\D//g;
+ return int($txt);
+}
+
+sub rndseed {
+ my ($symb,$courseid,$domain,$username)=@_;
+ if (!$symb) {
+ unless ($symb=&symbread()) { return time; }
+ }
+ if (!$courseid) { $courseid=$ENV{'request.course.id'};}
+ if (!$domain) {$domain=$ENV{'user.domain'};}
+ if (!$username) {$username=$ENV{'user.name'};}
+ {
+ use integer;
+ my $symbchck=unpack("%32C*",$symb) << 27;
+ my $symbseed=numval($symb) << 22;
+ my $namechck=unpack("%32C*",$username) << 17;
+ my $nameseed=numval($username) << 12;
+ my $domainseed=unpack("%32C*",$domain) << 7;
+ my $courseseed=unpack("%32C*",$courseid);
+ my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
+ #uncommenting these lines can break things!
+ #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+ #&Apache::lonxml::debug("rndseed :$num:$symb");
+ return $num;
+ }
+}
+
+sub ireceipt {
+ my ($funame,$fudom,$fucourseid,$fusymb)=@_;
+ my $cuname=unpack("%32C*",$funame);
+ my $cudom=unpack("%32C*",$fudom);
+ my $cucourseid=unpack("%32C*",$fucourseid);
+ my $cusymb=unpack("%32C*",$fusymb);
+ my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
+ return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
+ ($cunique%$cuname+
+ $cunique%$cudom+
+ $cusymb%$cuname+
+ $cusymb%$cudom+
+ $cucourseid%$cuname+
+ $cucourseid%$cudom);
+}
+
+sub receipt {
+ return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
+ $ENV{'request.course.id'},&symbread());
+}
+
+# ------------------------------------------------------------ Serves up a file
+# returns either the contents of the file or a -1
+sub getfile {
+ my $file=shift;
+ &repcopy($file);
+ if (! -e $file ) { return -1; };
+ my $fh=Apache::File->new($file);
+ my $a='';
+ while (<$fh>) { $a .=$_; }
+ return $a
+}
+
+sub filelocation {
+ my ($dir,$file) = @_;
+ my $location;
+ $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
+ if ($file=~m:^/~:) { # is a contruction space reference
+ $location = $file;
+ $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
+ } else {
+ $file=~s/^$perlvar{'lonDocRoot'}//;
+ $file=~s:^/*res::;
+ if ( !( $file =~ m:^/:) ) {
+ $location = $dir. '/'.$file;
+ } else {
+ $location = '/home/httpd/html/res'.$file;
+ }
+ }
+ $location=~s://+:/:g; # remove duplicate /
+ while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
+ return $location;
+}
+
+sub hreflocation {
+ my ($dir,$file)=@_;
+ unless (($file=~/^http:\/\//i) || ($file=~/^\//)) {
+ my $finalpath=filelocation($dir,$file);
+ $finalpath=~s/^\/home\/httpd\/html//;
+ return $finalpath;
+ } else {
+ return $file;
+ }
+}
+
+# ------------------------------------------------------------- Declutters URLs
+
+sub declutter {
+ my $thisfn=shift;
+ $thisfn=~s/^$perlvar{'lonDocRoot'}//;
+ $thisfn=~s/^\///;
+ $thisfn=~s/^res\///;
+ return $thisfn;
}
# -------------------------------------------------------- Escape Special Chars
@@ -553,14 +2792,44 @@ sub unescape {
# ================================================================ Main Program
-sub BEGIN {
-if ($readit ne 'done') {
-# ------------------------------------------------------------ Read access.conf
+sub goodbye {
+ &logthis("Starting Shut down");
+ &flushcourselogs();
+ &logthis("Shutting down");
+}
+
+BEGIN {
+# ------------------------------------------- Read access.conf and loncapa.conf
+# (eventually access.conf will become deprecated)
+ unless ($readit) {
+
{
my $config=Apache::File->new("/etc/httpd/conf/access.conf");
while (my $configline=<$config>) {
- if ($configline =~ /PerlSetVar/) {
+ if ($configline =~ /^[^\#]*PerlSetVar/) {
+ my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
+ chomp($varvalue);
+ $perlvar{$varname}=$varvalue;
+ }
+ }
+}
+{
+ my $config=Apache::File->new("/etc/httpd/conf/loncapa.conf");
+
+ while (my $configline=<$config>) {
+ if ($configline =~ /^[^\#]*PerlSetVar/) {
+ my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
+ chomp($varvalue);
+ $perlvar{$varname}=$varvalue;
+ }
+ }
+}
+{
+ my $config=Apache::File->new("/etc/httpd/conf/loncapa_apache.conf");
+
+ while (my $configline=<$config>) {
+ if ($configline =~ /^[^\#]*PerlSetVar/) {
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
chomp($varvalue);
$perlvar{$varname}=$varvalue;
@@ -573,9 +2842,11 @@ if ($readit ne 'done') {
my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
while (my $configline=<$config>) {
+ chomp($configline);
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
$hostname{$id}=$name;
$hostdom{$id}=$domain;
+ $hostip{$id}=$ip;
if ($role eq 'library') { $libserv{$id}=$name; }
}
}
@@ -597,8 +2868,10 @@ if ($readit ne 'done') {
while (my $configline=<$config>) {
chomp($configline);
+ if ($configline) {
my ($role,$perm)=split(/ /,$configline);
if ($perm ne '') { $pr{$role}=$perm; }
+ }
}
}
@@ -608,17 +2881,447 @@ if ($readit ne 'done') {
while (my $configline=<$config>) {
chomp($configline);
+ if ($configline) {
my ($short,$plain)=split(/:/,$configline);
if ($plain ne '') { $prp{$short}=$plain; }
+ }
}
}
-$readit='done';
+# ---------------------------------------------------------- Read package table
+{
+ my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
+
+ while (my $configline=<$config>) {
+ chomp($configline);
+ my ($short,$plain)=split(/:/,$configline);
+ my ($pack,$name)=split(/\&/,$short);
+ if ($plain ne '') {
+ $packagetab{$pack.'&'.$name.'&name'}=$name;
+ $packagetab{$short}=$plain;
+ }
+ }
+}
+
+%metacache=();
+
+$processmarker=$$.'_'.time.'_'.$perlvar{'lonHostID'};
+$dumpcount=0;
+
+&logtouch();
&logthis('<font color=yellow>INFO: Read configuration</font>');
+$readit=1;
}
}
+
1;
+__END__
+
+=head1 NAME
+
+Apache::lonnet - TCP networking package
+
+=head1 SYNOPSIS
+
+Invoked by other LON-CAPA modules.
+
+ &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
+
+=head1 INTRODUCTION
+
+This module provides subroutines which interact with the
+lonc/lond (TCP) network layer of LON-CAPA.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 HANDLER SUBROUTINE
+
+There is no handler routine for this module.
+
+=head1 OTHER SUBROUTINES
+
+=over 4
+
+=item *
+
+logtouch() : make sure the logfile, lonnet.log, exists
+
+=item *
+
+logthis() : append message to lonnet.log
+
+=item *
+
+logperm() : append a permanent message to lonnet.perm.log
+
+=item *
+
+subreply() : non-critical communication, called by &reply
+
+=item *
+
+reply() : makes two attempts to pass message; logs refusals and rejections
+
+=item *
+
+reconlonc() : tries to reconnect lonc client processes.
+
+=item *
+
+critical() : passes a critical message to another server; if cannot get
+through then place message in connection buffer
+
+=item *
+
+appenv(%hash) : read in current user environment, append new environment
+values to make new user environment
+
+=item *
+
+delenv($varname) : read in current user environment, remove all values
+beginning with $varname, write new user environment (note: flock is used
+to prevent conflicting shared read/writes with file)
+
+=item *
+
+spareserver() : find server with least workload from spare.tab
+
+=item *
+
+queryauthenticate($uname,$udom) : try to determine user's current
+authentication scheme
+
+=item *
+
+authenticate($uname,$upass,$udom) : try to authenticate user from domain's lib
+servers (first use the current one)
+
+=item *
+
+homeserver($uname,$udom) : find the homebase for a user from domain's lib
+servers
+
+=item *
+
+idget($udom,@ids) : find the usernames behind a list of IDs (returns hash:
+id=>name,id=>name)
+
+=item *
+
+idrget($udom,@unames) : find the IDs behind a list of usernames (returns hash:
+name=>id,name=>id)
+
+=item *
+
+idput($udom,%ids) : store away a list of names and associated IDs
+
+=item *
+
+usection($domain,$user,$courseid) : output of section name/number or '' for
+"not in course" and '-1' for "no section"
+
+=item *
+
+userenvironment($domain,$user,$what) : puts out any environment parameter
+for a user
+
+=item *
+
+subscribe($fname) : subscribe to a resource, return URL if possible
+
+=item *
+
+repcopy($filename) : replicate file
+
+=item *
+
+ssi($url,%hash) : server side include, does a complete request cycle on url to
+localhost, posts hash
+
+=item *
+
+log($domain,$name,$home,$message) : write to permanent log for user; use
+critical subroutine
+
+=item *
+
+flushcourselogs() : flush (save) buffer logs and access logs
+
+=item *
+
+courselog($what) : save message for course in hash
+
+=item *
+
+courseacclog($what) : save message for course using &courselog(). Perform
+special processing for specific resource types (problems, exams, quizzes, etc).
+
+=item *
+
+countacc($url) : count the number of accesses to a given URL
+
+=item *
+
+sub checkout($symb,$tuname,$tudom,$tcrsid) : check out an item
+
+=item *
+
+sub checkin($token) : check in an item
+
+=item *
+
+sub expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
+
+=item *
+
+devalidate($symb) : devalidate spreadsheets
+
+=item *
+
+hash2str(%hash) : convert a hash into a string complete with escaping and '='
+and '&' separators, supports elements that are arrayrefs and hashrefs
+
+=item *
+
+hashref2str($hashref) : convert a hashref into a string complete with
+escaping and '=' and '&' separators, supports elements that are
+arrayrefs and hashrefs
+
+=item *
+
+arrayref2str($arrayref) : convert an arrayref into a string complete
+with escaping and '&' separators, supports elements that are arrayrefs
+and hashrefs
+
+=item *
+
+str2hash($string) : convert string to hash using unescaping and
+splitting on '=' and '&', supports elements that are arrayrefs and
+hashrefs
+
+=item *
+
+str2array($string) : convert string to hash using unescaping and
+splitting on '&', supports elements that are arrayrefs and hashrefs
+
+=item *
+
+tmpreset($symb,$namespace,$domain,$stuname) : temporary storage
+
+=item *
+
+tmprestore($symb,$namespace,$domain,$stuname) : temporary restore
+
+=item *
+
+store($storehash,$symb,$namespace,$domain,$stuname) : 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 *
+
+cstore($storehash,$symb,$namespace,$domain,$stuname) : same as store but
+uses critical subroutine
+
+=item *
+
+restore($symb,$namespace,$domain,$stuname) : returns hash for this symb;
+all args are optional
+
+=item *
+
+coursedescription($courseid) : course description
+
+=item *
+
+rolesinit($domain,$username,$authhost) : get user privileges
+
+=item *
+
+get($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
+reference filled in from namesp ($udomain and $uname are optional)
+
+=item *
+
+del($namespace,$storearr,$udomain,$uname) : deletes keys out of array from
+namesp ($udomain and $uname are optional)
+
+=item *
+
+dump($namespace,$udomain,$uname,$regexp) :
+dumps the complete (or key matching regexp) namespace into a hash
+($udomain, $uname and $regexp are optional)
+
+=item *
+
+put($namespace,$storehash,$udomain,$uname) : stores hash in namesp
+($udomain and $uname are optional)
+
+=item *
+
+cput($namespace,$storehash,$udomain,$uname) : critical put
+($udomain and $uname are optional)
+
+=item *
+
+eget($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
+reference filled in from namesp (encrypts the return communication)
+($udomain and $uname are optional)
+
+=item *
+
+allowed($priv,$uri) : check for a user privilege; returns codes for allowed
+actions
+ F: full access
+ U,I,K: authentication modes (cxx only)
+ '': forbidden
+ 1: user needs to choose course
+ 2: browse allowed
+
+=item *
+
+definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
+role rolename set privileges in format of lonTabs/roles.tab for system, domain,
+and course level
+
+=item *
+
+metadata_query($query,$custom,$customshow) : make a metadata query against the
+network of library servers; returns file handle of where SQL and regex results
+will be stored for query
+
+=item *
+
+plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
+explanation of a user role term
+
+=item *
+
+assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
+user for the level given by URL. Optional start and end dates (leave empty
+string or zero for "no date")
+
+=item *
+
+modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
+
+=item *
+
+modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
+modify user
+
+=item *
+
+modifystudent($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
+$end,$start) : modify student
+
+=item *
+
+writecoursepref($courseid,%prefs) : write preferences for a course
+
+=item *
+
+createcourse($udom,$description,$url) : make/modify course
+
+=item *
+
+assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
+custom role; give a custom role to a user for the level given by URL. Specify
+name and domain of role author, and role name
+
+=item *
+
+revokerole($udom,$uname,$url,$role) : revoke a role for url
+
+=item *
+
+revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
+
+=item *
+
+dirlist($uri) : return directory list based on URI
+
+=item *
+
+directcondval($number) : get current value of a condition; reads from a state
+string
+
+=item *
+
+condval($condidx) : value of condition index based on state
+
+=item *
+
+EXT($varname,$symbparm) : value of a variable
+
+=item *
+
+metadata($uri,$what,$liburi,$prefix,$depthcount) : get metadata; returns the
+metadata entry for a file; entry='keys', returns a comma separated list of keys
+
+=item *
+
+symblist($mapname,%newhash) : update symbolic storage links
+
+=item *
+
+symbread($filename) : return symbolic list entry (filename argument optional);
+returns the data handle
+
+=item *
+
+numval($salt) : return random seed value (addend for rndseed)
+
+=item *
+
+rndseed($symb,$courseid,$domain,$username) : create a random sum; returns
+a random seed, all arguments are optional, if they aren't sent it uses the
+environment to derive them. Note: if symb isn't sent and it can't get one
+from &symbread it will use the current time as its return value
+
+=item *
+
+ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
+unfakeable, receipt
+
+=item *
+
+receipt() : API to ireceipt working off of ENV values; given out to users
+
+=item *
+
+getfile($file) : serves up a file, returns the contents of a file or -1;
+replicates and subscribes to the file
+
+=item *
+
+filelocation($dir,$file) : returns file system location of a file based on URI;
+meant to be "fairly clean" absolute reference
+
+=item *
+
+hreflocation($dir,$file) : returns file system location or a URL; same as
+filelocation except for hrefs
+
+=item *
+
+declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
+
+=item *
+
+escape() : unpack non-word characters into CGI-compatible hex codes
+
+=item *
+
+unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
+=item *
+goodbye() : flush course logs and log shutting down; it is called in srm.conf
+as a PerlChildExitHandler
+=back
+=cut