version 1.11, 2000/10/11 18:31:00
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version 1.117, 2006/06/30 04:23:25
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Construct and maintain state and binary representation of course for user |
# Construct and maintain state and binary representation of course for user |
# |
# |
# (Server for RAT Maps |
# $Id$ |
# |
# |
# (Edit Handler for RAT Maps |
# Copyright Michigan State University Board of Trustees |
# (TeX Content Handler |
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# |
# |
# 05/29/00,05/30 Gerd Kortemeyer) |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
# 7/1 Gerd Kortemeyer) |
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# 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer) |
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# |
# |
# 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23,8/30, |
# LON-CAPA is free software; you can redistribute it and/or modify |
# 9/2,9/4,9/29,9/30,10/2,10/11 Gerd Kortemeyer |
# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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### |
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package Apache::lonuserstate; |
package Apache::lonuserstate; |
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# ------------------------------------------------- modules used by this module |
use strict; |
use strict; |
use Apache::Constants qw(:common :http); |
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use Apache::File; |
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use HTML::TokeParser; |
use HTML::TokeParser; |
use Apache::lonnet(); |
use Apache::lonnet; |
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use Apache::lonlocal; |
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use Apache::loncommon(); |
use GDBM_File; |
use GDBM_File; |
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use Apache::lonmsg; |
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use Safe; |
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use Safe::Hole; |
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use Opcode; |
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use Apache::lonenc; |
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use Fcntl qw(:flock); |
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use LONCAPA; |
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# ---------------------------------------------------- Globals for this package |
# ---------------------------------------------------- Globals for this package |
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my $pc; # Package counter |
my $pc; # Package counter |
my %hash; # The big tied hash |
my %hash; # The big tied hash |
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my %parmhash;# The hash with the parameters |
my @cond; # Array with all of the conditions |
my @cond; # Array with all of the conditions |
my $errtext; # variable with all errors |
my $errtext; # variable with all errors |
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my $retfrid; # variable with the very first RID in the course |
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my $retfurl; # first URL |
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my %randompick; # randomly picked resources |
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my %randompickseed; # optional seed for randomly picking resources |
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my %encurl; # URLs in this folder are supposed to be encrypted |
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my %hiddenurl; # this URL (or complete folder) is supposed to be hidden |
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# ----------------------------------- Remove version from URL and store in hash |
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sub versiontrack { |
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my $uri=shift; |
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if ($uri=~/\.(\d+)\.\w+$/) { |
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my $version=$1; |
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$uri=~s/\.\d+\.(\w+)$/\.$1/; |
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unless ($hash{'version_'.$uri}) { |
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$hash{'version_'.$uri}=$version; |
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} |
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} |
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return $uri; |
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} |
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# -------------------------------------------------------------- Put in version |
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sub putinversion { |
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my $uri=shift; |
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my $key=$env{'request.course.id'}.'_'.&Apache::lonnet::clutter($uri); |
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if ($hash{'version_'.$uri}) { |
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my $version=$hash{'version_'.$uri}; |
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if ($version eq 'mostrecent') { return $uri; } |
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if ($version eq &Apache::lonnet::getversion( |
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&Apache::lonnet::filelocation('',$uri))) |
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{ return $uri; } |
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$uri=~s/\.(\w+)$/\.$version\.$1/; |
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} |
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&Apache::lonnet::do_cache_new('courseresversion',$key,&Apache::lonnet::declutter($uri),600); |
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return $uri; |
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} |
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# ----------------------------------------- Processing versions file for course |
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sub processversionfile { |
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my %cenv=@_; |
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my %versions=&Apache::lonnet::dump('resourceversions', |
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$cenv{'domain'}, |
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$cenv{'num'}); |
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foreach my $ver (keys(%versions)) { |
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if ($ver=~/^error\:/) { return; } |
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$hash{'version_'.$ver}=$versions{$ver}; |
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} |
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} |
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# --------------------------------------------------------- Loads map from disk |
# --------------------------------------------------------- Loads map from disk |
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sub loadmap { |
sub loadmap { |
my $uri=shift; |
my $uri=shift; |
if ($hash{'map_pc_'.$uri}) { return OK; } |
if ($hash{'map_pc_'.$uri}) { |
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$errtext.=&mt('<br />Multiple use of sequence/page <tt>[_1]</tt>! The course will not function properly.',$uri); |
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return; |
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} |
$pc++; |
$pc++; |
my $lpc=$pc; |
my $lpc=$pc; |
$hash{'map_pc_'.$uri}=$lpc; |
$hash{'map_pc_'.$uri}=$lpc; |
$hash{'map_id_'.$lpc}=$uri; |
$hash{'map_id_'.$lpc}=$uri; |
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my $fn='/home/httpd/html'.$uri; |
# Determine and check filename |
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my $fn=&Apache::lonnet::filelocation('',&putinversion($uri)); |
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my $ispage=($fn=~/\.page$/); |
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unless (($fn=~/\.sequence$/) || |
unless (($fn=~/\.sequence$/) || |
($fn=~/\.page$/)) { |
($fn=~/\.page$/)) { |
$errtext.="Invalid map: $fn\n"; |
$errtext.=&mt("<br />Invalid map: <tt>[_1]</tt>",$fn); |
return OK; |
return; |
} |
} |
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unless (-e $fn) { |
my $instr=&Apache::lonnet::getfile($fn); |
my $returned=Apache::lonnet::repcopy($fn); |
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unless ($returned eq OK) { |
unless ($instr eq -1) { |
$errtext.="Could not import: $fn - "; |
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if ($returned eq HTTP_SERVICE_UNAVAILABLE) { |
# Successfully got file, parse it |
$errtext.="Server unavailable\n"; |
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} |
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if ($returned eq HTTP_NOT_FOUND) { |
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$errtext.="File not found\n"; |
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} |
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if ($returned eq FORBIDDEN) { |
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$errtext.="Access forbidden\n"; |
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} |
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return OK; |
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} |
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} |
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if (-e $fn) { |
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my @content; |
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{ |
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my $fh=Apache::File->new($fn); |
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@content=<$fh>; |
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} |
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my $instr=join('',@content); |
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my $parser = HTML::TokeParser->new(\$instr); |
my $parser = HTML::TokeParser->new(\$instr); |
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$parser->attr_encoded(1); |
my $token; |
my $token; |
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my $linkpc=0; |
my $linkpc=0; |
Line 85 sub loadmap {
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Line 147 sub loadmap {
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if ($token->[0] eq 'S') { |
if ($token->[0] eq 'S') { |
if ($token->[1] eq 'resource') { |
if ($token->[1] eq 'resource') { |
# -------------------------------------------------------------------- Resource |
# -------------------------------------------------------------------- Resource |
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if ($token->[2]->{'type'} eq 'zombie') { next; } |
my $rid=$lpc.'.'.$token->[2]->{'id'}; |
my $rid=$lpc.'.'.$token->[2]->{'id'}; |
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$hash{'kind_'.$rid}='res'; |
$hash{'kind_'.$rid}='res'; |
$hash{'title_'.$rid}=$token->[2]->{'title'}; |
$hash{'title_'.$rid}=$token->[2]->{'title'}; |
my $turi=$token->[2]->{'src'}; |
my $turi=&versiontrack($token->[2]->{'src'}); |
$hash{'src_'.$rid}=$turi; |
if ($token->[2]->{'version'}) { |
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unless ($hash{'version_'.$turi}) { |
if (defined($hash{'ids_'.$turi})) { |
$hash{'version_'.$turi}=$1; |
$hash{'ids_'.$turi}.=','.$rid; |
} |
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} |
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my $title=$token->[2]->{'title'}; |
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$title=~s/\&colon\;/\:/gs; |
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# my $symb=&Apache::lonnet::encode_symb($uri, |
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# $token->[2]->{'id'}, |
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# $turi); |
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# &Apache::lonnet::do_cache_new('title',$symb,$title); |
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unless ($ispage) { |
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$turi=~/\.(\w+)$/; |
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my $embstyle=&Apache::loncommon::fileembstyle($1); |
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if ($token->[2]->{'external'} eq 'true') { # external |
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$turi=~s/^http\:\/\//\/adm\/wrapper\/ext\//; |
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} elsif ($turi=~/^\/*uploaded\//) { # uploaded |
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if (($embstyle eq 'img') |
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|| ($embstyle eq 'emb') |
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|| ($embstyle eq 'wrp')) { |
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$turi='/adm/wrapper'.$turi; |
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} elsif ($embstyle eq 'ssi') { |
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#do nothing with these |
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} elsif ($turi!~/\.(sequence|page)$/) { |
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$turi='/adm/coursedocs/showdoc'.$turi; |
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} |
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} elsif ($turi=~/\S/) { # normal non-empty internal resource |
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my $mapdir=$uri; |
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$mapdir=~s/[^\/]+$//; |
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$turi=&Apache::lonnet::hreflocation($mapdir,$turi); |
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if (($embstyle eq 'img') |
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|| ($embstyle eq 'emb') |
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|| ($embstyle eq 'wrp')) { |
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$turi='/adm/wrapper'.$turi; |
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} |
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} |
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} |
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# Store reverse lookup, remove query string |
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my $idsuri=$turi; |
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$idsuri=~s/\?.+$//; |
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if (defined($hash{'ids_'.$idsuri})) { |
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$hash{'ids_'.$idsuri}.=','.$rid; |
} else { |
} else { |
$hash{'ids_'.$turi}=''.$rid; |
$hash{'ids_'.$idsuri}=''.$rid; |
} |
} |
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if ($turi=~/\/(syllabus|aboutme|navmaps|smppg|grppg|bulletinboard)$/) { |
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$turi.='?register=1'; |
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} |
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if ($token->[2]->{'src'}=~/\/\//) { |
$hash{'src_'.$rid}=$turi; |
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if ($token->[2]->{'external'} eq 'true') { |
$hash{'ext_'.$rid}='true:'; |
$hash{'ext_'.$rid}='true:'; |
} else { |
} else { |
$hash{'ext_'.$rid}='false:'; |
$hash{'ext_'.$rid}='false:'; |
Line 164 sub loadmap {
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Line 270 sub loadmap {
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} else { |
} else { |
$hash{'from_'.$goesto}=''.$linkid; |
$hash{'from_'.$goesto}=''.$linkid; |
} |
} |
} |
} elsif ($token->[1] eq 'param') { |
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# ------------------------------------------------------------------- Parameter |
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my $referid=$lpc.'.'.$token->[2]->{'to'}; |
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my $name=$token->[2]->{'name'}; |
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my $part; |
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if ($name=~/^parameter_(.*)_/) { |
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$part=$1; |
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} else { |
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$part=0; |
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} |
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$name=~s/^.*_([^_]*)$/$1/; |
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my $newparam= |
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&escape($token->[2]->{'type'}).':'. |
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&escape($part.'.'.$name).'='. |
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&escape($token->[2]->{'value'}); |
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if (defined($hash{'param_'.$referid})) { |
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$hash{'param_'.$referid}.='&'.$newparam; |
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} else { |
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$hash{'param_'.$referid}=''.$newparam; |
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} |
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if ($token->[2]->{'name'}=~/^parameter_(0_)*mapalias$/) { |
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$hash{'mapalias_'.$token->[2]->{'value'}}=$referid; |
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} |
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if ($token->[2]->{'name'}=~/^parameter_(0_)*randompick$/) { |
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$randompick{$referid}=$token->[2]->{'value'}; |
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} |
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if ($token->[2]->{'name'}=~/^parameter_(0_)*randompickseed$/) { |
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$randompick{$referid}=$token->[2]->{'value'}; |
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} |
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if ($token->[2]->{'name'}=~/^parameter_(0_)*encrypturl$/) { |
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if ($token->[2]->{'value'}=~/^yes$/i) { |
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$encurl{$referid}=1; |
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} |
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} |
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if ($token->[2]->{'name'}=~/^parameter_(0_)*hiddenresource$/) { |
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if ($token->[2]->{'value'}=~/^yes$/i) { |
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$hiddenurl{$referid}=1; |
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} |
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} |
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} |
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} |
} |
} |
} |
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} else { |
} else { |
$errtext.='Map not loaded: The file does not exist. '; |
$errtext.=&mt('<br />Map not loaded: The file <tt>[_1]</tt> does not exist.',$fn); |
} |
} |
} |
} |
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# --------------------------------------------------------- Simplify expression |
# --------------------------------------------------------- Simplify expression |
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sub simplify { |
sub simplify { |
my $expression=shift; |
my $expression=shift; |
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# (0&1) = 1 |
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$expression=~s/\(0\&([_\.\d]+)\)/$1/g; |
# (8)=8 |
# (8)=8 |
$expression=~s/\((\d+)\)/$1/g; |
$expression=~s/\(([_\.\d]+)\)/$1/g; |
# 8&8=8 |
# 8&8=8 |
$expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g; |
$expression=~s/([^_\.\d])([_\.\d]+)\&\2([^_\.\d])/$1$2$3/g; |
# 8|8=8 |
# 8|8=8 |
$expression=~s/(\D)(\d+)\|\2(\D)/$1$2$3/g; |
$expression=~s/([^_\.\d])([_\.\d]+)\|\2([^_\.\d])/$1$2$3/g; |
# (5&3)&4=5&3&4 |
# (5&3)&4=5&3&4 |
$expression=~s/\((\d+)((?:\&\d+)+)\)\&(\d+\D)/$1$2\&$3/g; |
$expression=~s/\(([_\.\d]+)((?:\&[_\.\d]+)+)\)\&([_\.\d]+[^_\.\d])/$1$2\&$3/g; |
# (((5&3)|(4&6)))=((5&3)|(4&6)) |
# (((5&3)|(4&6)))=((5&3)|(4&6)) |
$expression=~ |
$expression=~ |
s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g; |
s/\((\(\([_\.\d]+(?:\&[_\.\d]+)*\)(?:\|\([_\.\d]+(?:\&[_\.\d]+)*\))+\))\)/$1/g; |
# ((5&3)|(4&6))|(1&2)=(5&3)|(4&6)|(1&2) |
# ((5&3)|(4&6))|(1&2)=(5&3)|(4&6)|(1&2) |
$expression=~ |
$expression=~ |
s/\((\(\d+(?:\&\d+)*\))((?:\|\(\d+(?:\&\d+)*\))+)\)\|(\(\d+(?:\&\d+)*\))/\($1$2\|$3\)/g; |
s/\((\([_\.\d]+(?:\&[_\.\d]+)*\))((?:\|\([_\.\d]+(?:\&[_\.\d]+)*\))+)\)\|(\([_\.\d]+(?:\&[_\.\d]+)*\))/\($1$2\|$3\)/g; |
return $expression; |
return $expression; |
} |
} |
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# -------------------------------------------------------- Build condition hash |
# -------------------------------------------------------- Build condition hash |
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sub traceroute { |
sub traceroute { |
my ($sofar,$rid,$beenhere)=@_; |
my ($sofar,$rid,$beenhere,$encflag,$hdnflag)=@_; |
$sofar=simplify($sofar); |
my $newsofar=$sofar=simplify($sofar); |
unless ($beenhere=~/\&$rid\&/) { |
unless ($beenhere=~/\&$rid\&/) { |
$beenhere.=$rid.'&'; |
$beenhere.=$rid.'&'; |
if (defined($hash{'conditions_'.$rid})) { |
my ($mapid,$resid)=split(/\./,$rid); |
$hash{'conditions_'.$rid}=simplify( |
my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid}); |
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my $hidden=&Apache::lonnet::EXT('resource.0.hiddenresource',$symb); |
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if ($hdnflag || lc($hidden) eq 'yes') { |
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$hiddenurl{$rid}=1; |
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} |
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if (!$hdnflag && lc($hidden) eq 'no') { |
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delete($hiddenurl{$rid}); |
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} |
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my $encrypt=&Apache::lonnet::EXT('resource.0.encrypturl',$symb); |
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if ($encflag || lc($encrypt) eq 'yes') { $encurl{$rid}=1; } |
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if (($retfrid eq '') && ($hash{'src_'.$rid}) |
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&& ($hash{'src_'.$rid}!~/\.sequence$/)) { |
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$retfrid=$rid; |
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} |
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if (defined($hash{'conditions_'.$rid})) { |
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$hash{'conditions_'.$rid}=simplify( |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
} else { |
} else { |
$hash{'conditions_'.$rid}=$sofar; |
$hash{'conditions_'.$rid}=$sofar; |
} |
} |
if (defined($hash{'is_map_'.$rid})) { |
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if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) { |
# if the expression is just the 0th condition keep it |
&traceroute($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},'&'); |
# otherwise leave a pointer to this condition expression |
if (defined($hash{'map_finish_'.$hash{'src_'.$rid}})) { |
$newsofar = ($sofar eq '0') ? $sofar : '_'.$rid; |
$sofar= |
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$hash{'conditions_'.$hash{'map_finish_'.$hash{'src_'.$rid}}}; |
if (defined($hash{'is_map_'.$rid})) { |
} |
if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) { |
} |
$sofar=$newsofar= |
} |
&traceroute($sofar, |
if (defined($hash{'to_'.$rid})) { |
$hash{'map_start_'.$hash{'src_'.$rid}},'&', |
map { |
$encflag || $encurl{$rid}, |
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$hdnflag || $hiddenurl{$rid}); |
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} |
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} |
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if (defined($hash{'to_'.$rid})) { |
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foreach my $id (split(/\,/,$hash{'to_'.$rid})) { |
my $further=$sofar; |
my $further=$sofar; |
if ($hash{'undercond_'.$_}) { |
if ($hash{'undercond_'.$id}) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$id}})) { |
$further=simplify('('.$further.')&('. |
$further=simplify('('.'_'.$rid.')&('. |
$hash{'condid_'.$hash{'undercond_'.$_}}.')'); |
$hash{'condid_'.$hash{'undercond_'.$id}}.')'); |
} else { |
} else { |
$errtext.='Undefined condition ID: ' |
$errtext.=&mt('<br />Undefined condition ID: [_1]',$hash{'undercond_'.$id}); |
.$hash{'undercond_'.$_}.'. '; |
} |
} |
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} |
} |
&traceroute($further,$hash{'goesto_'.$_},$beenhere); |
$newsofar=&traceroute($further,$hash{'goesto_'.$id},$beenhere, |
} split(/\,/,$hash{'to_'.$rid}); |
$encflag,$hdnflag); |
} |
} |
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} |
} |
} |
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return $newsofar; |
} |
} |
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# ------------------------------------------ Cascading conditions, quick access |
# ------------------------------ Cascading conditions, quick access, parameters |
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sub accinit { |
sub accinit { |
my ($uri,$short,$fn)=@_; |
my ($uri,$short,$fn)=@_; |
Line 243 sub accinit {
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Line 414 sub accinit {
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my %captured=(); |
my %captured=(); |
my $condcounter=0; |
my $condcounter=0; |
$acchash{'acc.cond.'.$short.'.0'}=0; |
$acchash{'acc.cond.'.$short.'.0'}=0; |
map { |
foreach my $key (keys(%hash)) { |
if ($_=~/^conditions/) { |
if ($key=~/^conditions/) { |
my $expr=$hash{$_}; |
my $expr=$hash{$key}; |
map { |
# try to find and factor out common sub-expressions |
my $sub=$_; |
foreach my $sub ($expr=~m/(\(\([_\.\d]+(?:\&[_\.\d]+)+\)(?:\|\([_\.\d]+(?:\&[_\.\d]+)+\))+\))/g) { |
my $orig=$_; |
my $orig=$sub; |
$sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/; |
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my $factor=$1; |
my ($factor) = ($sub=~/\(\(([_\.\d]+\&(:?[_\.\d]+\&)*)(?:[_\.\d]+\&*)+\)(?:\|\(\1(?:[_\.\d]+\&*)+\))+\)/); |
$sub=~s/$factor//g; |
next if (!defined($factor)); |
$sub=~s/^\(/\($factor\(/; |
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$sub.=')'; |
$sub=~s/\Q$factor\E//g; |
$sub=simplify($sub); |
$sub=~s/^\(/\($factor\(/; |
$orig=~s/(\W)/\\$1/g; |
$sub.=')'; |
$expr=~s/$orig/$sub/; |
$sub=simplify($sub); |
} ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g); |
$expr=~s/\Q$orig\E/$sub/; |
$hash{$_}=$expr; |
} |
unless (defined($captured{$expr})) { |
$hash{$key}=$expr; |
$condcounter++; |
unless (defined($captured{$expr})) { |
$captured{$expr}=$condcounter; |
$condcounter++; |
$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
$captured{$expr}=$condcounter; |
} |
$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
} |
} |
} keys %hash; |
} elsif ($key=~/^param_(\d+)\.(\d+)/) { |
map { |
my $prefix=&Apache::lonnet::encode_symb($hash{'map_id_'.$1},$2, |
if ($_=~/^ids/) { |
$hash{'src_'.$1.'.'.$2}); |
my $resid=$hash{$_}; |
foreach my $param (split(/\&/,$hash{$key})) { |
my $uri=$hash{'src_'.$resid}; |
my ($typename,$value)=split(/\=/,$param); |
my @uriparts=split(/\//,$uri); |
my ($type,$name)=split(/\:/,$typename); |
my $urifile=$uriparts[$#uriparts]; |
$parmhash{$prefix.'.'.&unescape($name)}= |
$#uriparts--; |
&unescape($value); |
my $uripath=join('/',@uriparts); |
$parmhash{$prefix.'.'.&unescape($name).'.type'}= |
$uripath=~s/^\/res\///; |
&unescape($type); |
if (defined($hash{'conditions_'.$resid})) { |
} |
$urifile.=':'.$captured{$hash{'conditions_'.$resid}}; |
} |
} else { |
} |
$urifile.=':0'; |
foreach my $key (keys(%hash)) { |
|
if ($key=~/^ids/) { |
|
foreach my $resid (split(/\,/,$hash{$key})) { |
|
my $uri=$hash{'src_'.$resid}; |
|
my ($uripath,$urifile) = |
|
&Apache::lonnet::split_uri_for_cond($uri); |
|
if ($uripath) { |
|
my $uricond='0'; |
|
if (defined($hash{'conditions_'.$resid})) { |
|
$uricond=$captured{$hash{'conditions_'.$resid}}; |
|
} |
|
if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
|
if ($acchash{'acc.res.'.$short.'.'.$uripath}=~ |
|
/(\&\Q$urifile\E\:[^\&]*)/) { |
|
my $replace=$1; |
|
my $regexp=$replace; |
|
#$regexp=~s/\|/\\\|/g; |
|
$acchash{'acc.res.'.$short.'.'.$uripath} =~ |
|
s/\Q$regexp\E/$replace\|$uricond/; |
|
} else { |
|
$acchash{'acc.res.'.$short.'.'.$uripath}.= |
|
$urifile.':'.$uricond.'&'; |
|
} |
|
} else { |
|
$acchash{'acc.res.'.$short.'.'.$uripath}= |
|
'&'.$urifile.':'.$uricond.'&'; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
$acchash{'acc.res.'.$short.'.'}='&:0&'; |
|
my $courseuri=$uri; |
|
$courseuri=~s/^\/res\///; |
|
&Apache::lonnet::delenv('(acc\.|httpref\.)'); |
|
&Apache::lonnet::appenv(%acchash); |
|
} |
|
|
|
# ---------------- Selectively delete from randompick maps and hidden url parms |
|
|
|
sub hiddenurls { |
|
my $randomoutentry=''; |
|
foreach my $rid (keys %randompick) { |
|
my $rndpick=$randompick{$rid}; |
|
my $mpc=$hash{'map_pc_'.$hash{'src_'.$rid}}; |
|
# ------------------------------------------- put existing resources into array |
|
my @currentrids=(); |
|
foreach my $key (sort(keys(%hash))) { |
|
if ($key=~/^src_($mpc\.\d+)/) { |
|
if ($hash{'src_'.$1}) { push @currentrids, $1; } |
} |
} |
if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
} |
$acchash{'acc.res.'.$short.'.'.$uripath}.=$urifile.'&'; |
# rids are number.number and we want to numercially sort on |
} else { |
# the second number |
$acchash{'acc.res.'.$short.'.'.$uripath}='&'.$urifile.'&'; |
@currentrids=sort { |
|
my (undef,$aid)=split(/\./,$a); |
|
my (undef,$bid)=split(/\./,$b); |
|
$aid <=> $bid; |
|
} @currentrids; |
|
next if ($#currentrids<$rndpick); |
|
# -------------------------------- randomly eliminate the ones that should stay |
|
my (undef,$id)=split(/\./,$rid); |
|
if ($randompickseed{$rid}) { $id=$randompickseed{$rid}; } |
|
my $rndseed=&Apache::lonnet::rndseed($id); # use id instead of symb |
|
&Apache::lonnet::setup_random_from_rndseed($rndseed); |
|
my @whichids=&Math::Random::random_permuted_index($#currentrids+1); |
|
for (my $i=1;$i<=$rndpick;$i++) { $currentrids[$whichids[$i]]=''; } |
|
#&Apache::lonnet::logthis("$id,$rndseed,".join(':',@whichids)); |
|
# -------------------------------------------------------- delete the leftovers |
|
for (my $k=0; $k<=$#currentrids; $k++) { |
|
if ($currentrids[$k]) { |
|
$hash{'randomout_'.$currentrids[$k]}=1; |
|
my ($mapid,$resid)=split(/\./,$currentrids[$k]); |
|
$randomoutentry.='&'. |
|
&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid}, |
|
$resid, |
|
$hash{'src_'.$currentrids[$k]} |
|
).'&'; |
} |
} |
} |
} |
} keys %hash; |
} |
my $courseuri=$uri; |
# ------------------------------ take care of explicitly hidden urls or folders |
$courseuri=~s/^\/res\///; |
foreach my $rid (keys %hiddenurl) { |
&Apache::lonnet::appenv(%acchash, |
$hash{'randomout_'.$rid}=1; |
"request.course.id" => $short, |
my ($mapid,$resid)=split(/\./,$rid); |
"request.course.fn" => $fn, |
$randomoutentry.='&'. |
"request.course.uri" => $courseuri); |
&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid, |
|
$hash{'src_'.$rid}).'&'; |
|
} |
|
# --------------------------------------- append randomout entry to environment |
|
if ($randomoutentry) { |
|
&Apache::lonnet::appenv('acc.randomout' => $randomoutentry); |
|
} |
} |
} |
|
|
# ---------------------------------------------------- Read map and all submaps |
# ---------------------------------------------------- Read map and all submaps |
|
|
sub readmap { |
sub readmap { |
my $short=shift; |
my $short=shift; |
$short=~s/^\///; |
$short=~s/^\///; |
my %cenv=&Apache::lonnet::coursedescription($short); |
my %cenv=&Apache::lonnet::coursedescription($short,{'freshen_cache'=>1}); |
my $fn=$cenv{'fn'}; |
my $fn=$cenv{'fn'}; |
my $uri; |
my $uri; |
$short=~s/\//\_/g; |
$short=~s/\//\_/g; |
unless ($uri=$cenv{'url'}) { |
unless ($uri=$cenv{'url'}) { |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
"Could not load course $short.</font>"); |
"Could not load course $short.</font>"); |
return 'No course data available.'; |
return ('',&mt('No course data available.'));; |
} |
} |
@cond=('true:normal'); |
@cond=('true:normal'); |
unlink($fn.'.db'); |
|
unlink($fn.'_symb.db'); |
open(LOCKFILE,">$fn.db.lock"); |
unlink($fn.'.state'); |
my $lock=0; |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { |
if (flock(LOCKFILE,LOCK_EX|LOCK_NB)) { |
%hash=(); |
$lock=1; |
$errtext=''; |
unlink($fn.'.db'); |
$pc=0; |
unlink($fn.'_symb.db'); |
loadmap($uri); |
unlink($fn.'.state'); |
if (defined($hash{'map_start_'.$uri})) { |
unlink($fn.'parms.db'); |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
} |
&accinit($uri,$short,$fn); |
undef %randompick; |
} |
undef %hiddenurl; |
unless (untie(%hash)) { |
undef %encurl; |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
$retfrid=''; |
"Could not untie coursemap $fn for $uri.</font>"); |
if ($lock && (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) && |
} |
(tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) { |
{ |
%hash=(); |
my $cfh; |
%parmhash=(); |
if ($cfh=Apache::File->new(">$fn.state")) { |
$errtext=''; |
print $cfh join("\n",@cond); |
$pc=0; |
} else { |
&processversionfile(%cenv); |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
my $furi=&Apache::lonnet::clutter($uri); |
"Could not write statemap $fn for $uri.</font>"); |
$hash{'src_0.0'}=&versiontrack($furi); |
} |
$hash{'title_0.0'}=&Apache::lonnet::metadata($uri,'title'); |
} |
$hash{'ids_'.$furi}='0.0'; |
} else { |
$hash{'is_map_0.0'}=1; |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
loadmap($uri); |
"Could not tie coursemap $fn for $uri.</font>"); |
if (defined($hash{'map_start_'.$uri})) { |
} |
&Apache::lonnet::appenv("request.course.id" => $short, |
return $errtext; |
"request.course.fn" => $fn, |
|
"request.course.uri" => $uri); |
|
$env{'request.course.id'}=$short; |
|
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
|
&accinit($uri,$short,$fn); |
|
&hiddenurls(); |
|
} |
|
# ------------------------------------------------------- Put versions into src |
|
foreach my $key (keys(%hash)) { |
|
if ($key=~/^src_/) { |
|
$hash{$key}=&putinversion($hash{$key}); |
|
} elsif ($key =~ /^(map_(?:start|finish|pc)_)(.*)/) { |
|
my ($type, $url) = ($1,$2); |
|
my $value = $hash{$key}; |
|
$hash{$type.&putinversion($url)}=$value; |
|
} |
|
} |
|
# ---------------------------------------------------------------- Encrypt URLs |
|
foreach my $id (keys(%encurl)) { |
|
# $hash{'src_'.$id}=&Apache::lonenc::encrypted($hash{'src_'.$id}); |
|
$hash{'encrypted_'.$id}=1; |
|
} |
|
# ----------------------------------------------- Close hashes to finally store |
|
# --------------------------------- Routine must pass this point, no early outs |
|
$hash{'first_rid'}=$retfrid; |
|
my ($mapid,$resid)=split(/\./,$retfrid); |
|
$hash{'first_mapurl'}=$hash{'map_id_'.$mapid}; |
|
my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$retfrid}); |
|
$retfurl=&add_get_param($hash{'src_'.$retfrid},{ 'symb' => $symb }); |
|
if ($hash{'encrypted_'.$retfrid}) { |
|
$retfurl=&Apache::lonenc::encrypted($retfurl,(&Apache::lonnet::allowed('adv') ne 'F')); |
|
} |
|
$hash{'first_url'}=$retfurl; |
|
unless ((untie(%hash)) && (untie(%parmhash))) { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not untie coursemap $fn for $uri.</font>"); |
|
} |
|
# ---------------------------------------------------- Store away initial state |
|
{ |
|
my $cfh; |
|
if (open($cfh,">$fn.state")) { |
|
print $cfh join("\n",@cond); |
|
} else { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not write statemap $fn for $uri.</font>"); |
|
} |
|
} |
|
flock(LOCKFILE,LOCK_UN); |
|
close(LOCKFILE); |
|
} else { |
|
# if we are here it is likely because we are already trying to |
|
# initialize the course in another child, busy wait trying to |
|
# tie the hashes for the next 90 seconds, if we succeed forward |
|
# them on to navmaps, if we fail, throw up the Could not init |
|
# course screen |
|
if ($lock) { |
|
# Got the lock but not the DB files |
|
flock(LOCKFILE,LOCK_UN); |
|
} |
|
untie(%hash); |
|
untie(%parmhash); |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not tie coursemap $fn for $uri.</font>"); |
|
my $i=0; |
|
while($i<90) { |
|
$i++; |
|
sleep(1); |
|
if (flock(LOCKFILE,LOCK_EX|LOCK_NB) && |
|
(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640))) { |
|
if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_READER(),0640)) { |
|
$retfurl='/adm/navmaps'; |
|
&Apache::lonnet::appenv("request.course.id" => $short, |
|
"request.course.fn" => $fn, |
|
"request.course.uri" => $uri); |
|
untie(%hash); |
|
untie(%parmhash); |
|
last; |
|
} |
|
} |
|
untie(%hash); |
|
untie(%parmhash); |
|
} |
|
flock(LOCKFILE,LOCK_UN); |
|
close(LOCKFILE); |
|
} |
|
&Apache::lonmsg::author_res_msg($env{'request.course.uri'},$errtext); |
|
# ------------------------------------------------- Check for critical messages |
|
|
|
my @what=&Apache::lonnet::dump('critical',$env{'user.domain'}, |
|
$env{'user.name'}); |
|
if ($what[0]) { |
|
if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { |
|
$retfurl='/adm/email?critical=display'; |
|
} |
|
} |
|
return ($retfurl,$errtext); |
} |
} |
|
|
|
# ------------------------------------------------------- Evaluate state string |
|
|
|
sub evalstate { |
|
my $fn=$env{'request.course.fn'}.'.state'; |
|
my $state=''; |
|
if (-e $fn) { |
|
my @conditions=(); |
|
{ |
|
open(my $fh,"<$fn"); |
|
@conditions=<$fh>; |
|
close($fh); |
|
} |
|
my $safeeval = new Safe; |
|
my $safehole = new Safe::Hole; |
|
$safeeval->permit("entereval"); |
|
$safeeval->permit(":base_math"); |
|
$safeeval->deny(":base_io"); |
|
$safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); |
|
foreach my $line (@conditions) { |
|
chomp($line); |
|
my ($condition,$weight)=split(/\:/,$line); |
|
if ($safeeval->reval($condition)) { |
|
if ($weight eq 'force') { |
|
$state.='3'; |
|
} else { |
|
$state.='2'; |
|
} |
|
} else { |
|
if ($weight eq 'stop') { |
|
$state.='0'; |
|
} else { |
|
$state.='1'; |
|
} |
|
} |
|
} |
|
} |
|
&Apache::lonnet::appenv('user.state.'.$env{'request.course.id'} => $state); |
|
return $state; |
|
} |
|
|
1; |
1; |
__END__ |
__END__ |
|
|
|
=head1 NAME |
|
|
|
Apache::lonuserstate - Construct and maintain state and binary representation |
|
of course for user |
|
|
|
=head1 SYNOPSIS |
|
|
|
Invoked by lonroles.pm. |
|
|
|
&Apache::lonuserstate::readmap($cdom.'/'.$cnum); |
|
|
|
=head1 INTRODUCTION |
|
|
|
This module constructs and maintains state and binary representation |
|
of course for user. |
|
|
|
This is part of the LearningOnline Network with CAPA project |
|
described at http://www.lon-capa.org. |
|
|
|
=head1 HANDLER SUBROUTINE |
|
|
|
There is no handler subroutine. |
|
|
|
=head1 OTHER SUBROUTINES |
|
|
|
=over 4 |
|
|
|
=item * |
|
|
|
loadmap() : Loads map from disk |
|
|
|
=item * |
|
|
|
simplify() : Simplify expression |
|
|
|
=item * |
|
|
|
traceroute() : Build condition hash |
|
|
|
=item * |
|
|
|
accinit() : Cascading conditions, quick access, parameters |
|
|
|
=item * |
|
|
|
readmap() : Read map and all submaps |
|
|
|
=item * |
|
|
|
evalstate() : Evaluate state string |
|
|
|
=back |
|
|
|
=cut |