version 1.3, 2000/08/06 03:25:24
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version 1.81, 2004/10/26 23:00:11
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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 Gerd Kortemeyer |
# LON-CAPA is free software; you can redistribute it and/or modify |
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# 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); |
use Apache::Constants qw(:common :http); |
use Apache::File; |
use Apache::File; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use Apache::lonnet(); |
use Apache::lonnet(); |
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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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# ---------------------------------------------------- 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 $retfurl; # variable with the very first URL in the course |
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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 $uri=shift; |
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if ($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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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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$cenv{'num'}); |
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foreach (keys %versions) { |
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if ($_=~/^error\:/) { return; } |
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$hash{'version_'.$_}=$versions{$_}; |
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} |
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} |
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# --------------------------------------------------------- Loads map from disk |
# --------------------------------------------------------- Loads map from disk |
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Line 39 sub loadmap {
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Line 109 sub loadmap {
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$hash{'map_pc_'.$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=~/\.course$/) || |
unless (($fn=~/\.sequence$/) || |
($fn=~/\.sequence$/) || |
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($fn=~/\.page$/)) { |
($fn=~/\.page$/)) { |
$errtext.="Invalid map: $fn\n"; |
$errtext.="Invalid map: $fn\n"; |
return OK; |
return OK; |
} |
} |
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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); |
my $token; |
my $token; |
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Line 90 sub loadmap {
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Line 144 sub loadmap {
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$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}.=','.$rid; |
} |
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} |
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&Apache::lonnet::do_cache(\%Apache::lonnet::titlecache, |
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&Apache::lonnet::encode_symb($uri,$token->[2]->{'id'}, |
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$turi), |
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$token->[2]->{'title'},'title'); |
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unless ($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 (($embstyle eq 'img') || ($embstyle eq 'emb')) { |
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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') || ($embstyle eq 'emb')) { |
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$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}=''.$rid; |
} |
} |
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if |
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($turi=~/\/(syllabus|aboutme|navmaps|smppg|bulletinboard)$/) { |
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$turi.='?register=1'; |
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} |
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$hash{'src_'.$rid}=$turi; |
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if ($token->[2]->{'src'}=~/\/\//) { |
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 116 sub loadmap {
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Line 209 sub loadmap {
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$hash{'type_'.$rid}='normal'; |
$hash{'type_'.$rid}='normal'; |
} |
} |
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if (($turi=~/\.course$/) || |
if (($turi=~/\.sequence$/) || |
($turi=~/\.sequence$/) || |
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($turi=~/\.page$/)) { |
($turi=~/\.page$/)) { |
$hash{'is_map_'.$rid}=1; |
$hash{'is_map_'.$rid}=1; |
&loadmap($turi); |
&loadmap($turi); |
Line 165 sub loadmap {
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Line 257 sub loadmap {
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} else { |
} else { |
$hash{'from_'.$goesto}=''.$linkid; |
$hash{'from_'.$goesto}=''.$linkid; |
} |
} |
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} elsif ($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 $newparam= |
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&Apache::lonnet::escape($token->[2]->{'type'}).':'. |
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&Apache::lonnet::escape($part.'.'.$name).'='. |
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&Apache::lonnet::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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} |
} |
Line 179 sub loadmap {
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Line 311 sub loadmap {
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sub simplify { |
sub simplify { |
my $expression=shift; |
my $expression=shift; |
# "True and" is nothing |
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$expression=~s/0\&//g; |
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# (8)=8 |
# (8)=8 |
$expression=~s/\((\d+)\)/$1/g; |
$expression=~s/\((\d+)\)/$1/g; |
# 8&8=8 |
# 8&8=8 |
$expression=~s/(\d+)\&\1/$1/g; |
$expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g; |
# 8|8=8 |
# 8|8=8 |
$expression=~s/(\d+)\|\1/$1/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+)/$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/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g; |
Line 201 sub simplify {
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Line 331 sub simplify {
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# -------------------------------------------------------- Build condition hash |
# -------------------------------------------------------- Build condition hash |
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sub traceroute { |
sub traceroute { |
my ($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.'&'; |
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my ($mapid,$resid)=split(/\./,$rid); |
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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') { $hiddenurl{$rid}=1; } |
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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 (($retfurl eq '') && ($hash{'src_'.$rid}) |
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&& ($hash{'src_'.$rid}!~/\.sequence$/)) { |
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$retfurl=$hash{'src_'.$rid}.(($hash{'src_'.$rid}=~/\?/)?'&':'?'). |
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'symb='.$symb; |
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} |
if (defined($hash{'conditions_'.$rid})) { |
if (defined($hash{'conditions_'.$rid})) { |
$hash{'conditions_'.$rid}=simplify( |
$hash{'conditions_'.$rid}=simplify( |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
} else { |
} else { |
$hash{'conditions_'.$rid}=$sofar; |
$hash{'conditions_'.$rid}=$sofar; |
} |
} |
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$newsofar=$hash{'conditions_'.$rid}; |
if (defined($hash{'is_map_'.$rid})) { |
if (defined($hash{'is_map_'.$rid})) { |
if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) { |
if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) { |
&traceroute($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},'&'); |
$sofar=$newsofar= |
if (defined($hash{'map_finish_'.$hash{'src_'.$rid}})) { |
&traceroute($sofar, |
$sofar= |
$hash{'map_start_'.$hash{'src_'.$rid}},'&', |
$hash{'conditions_'.$hash{'map_finish_'.$hash{'src_'.$rid}}}; |
$encflag || $encurl{$rid}, |
} |
$hdnflag || $hiddenurl{$rid}); |
} |
} |
} |
} |
if (defined($hash{'to_'.$rid})) { |
if (defined($hash{'to_'.$rid})) { |
map { |
foreach (split(/\,/,$hash{'to_'.$rid})) { |
my $further=$sofar; |
my $further=$sofar; |
if ($hash{'undercond_'.$_}) { |
if ($hash{'undercond_'.$_}) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
Line 232 sub traceroute {
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Line 374 sub traceroute {
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.$hash{'undercond_'.$_}.'. '; |
.$hash{'undercond_'.$_}.'. '; |
} |
} |
} |
} |
&traceroute($further,$hash{'goesto_'.$_},$beenhere); |
$newsofar=&traceroute($further,$hash{'goesto_'.$_},$beenhere, |
} split(/\,/,$hash{'to_'.$rid}); |
$encflag,$hdnflag); |
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} |
} |
} |
} |
} |
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return $newsofar; |
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} |
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# ------------------------------ Cascading conditions, quick access, parameters |
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sub accinit { |
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my ($uri,$short,$fn)=@_; |
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my %acchash=(); |
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my %captured=(); |
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my $condcounter=0; |
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$acchash{'acc.cond.'.$short.'.0'}=0; |
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foreach (keys %hash) { |
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if ($_=~/^conditions/) { |
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my $expr=$hash{$_}; |
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foreach ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g) { |
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my $sub=$_; |
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my $orig=$_; |
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$sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/; |
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my $factor=$1; |
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$sub=~s/$factor//g; |
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$sub=~s/^\(/\($factor\(/; |
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$sub.=')'; |
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$sub=simplify($sub); |
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$orig=~s/(\W)/\\$1/g; |
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$expr=~s/$orig/$sub/; |
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} |
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$hash{$_}=$expr; |
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unless (defined($captured{$expr})) { |
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$condcounter++; |
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$captured{$expr}=$condcounter; |
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$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
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} |
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} elsif ($_=~/^param_(\d+)\.(\d+)/) { |
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my $prefix=&Apache::lonnet::declutter($hash{'map_id_'.$1}). |
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'___'.$2.'___'.&Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2}); |
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foreach (split(/\&/,$hash{$_})) { |
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my ($typename,$value)=split(/\=/,$_); |
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my ($type,$name)=split(/\:/,$typename); |
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$parmhash{$prefix.'.'.&Apache::lonnet::unescape($name)}= |
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&Apache::lonnet::unescape($value); |
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$parmhash{$prefix.'.'.&Apache::lonnet::unescape($name).'.type'}= |
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&Apache::lonnet::unescape($type); |
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} |
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} |
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} |
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foreach (keys %hash) { |
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if ($_=~/^ids/) { |
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foreach (split(/\,/,$hash{$_})) { |
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my $resid=$_; |
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my $uri=$hash{'src_'.$resid}; |
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$uri=~s/^\/adm\/wrapper//; |
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$uri=&Apache::lonnet::declutter($uri); |
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my @uriparts=split(/\//,$uri); |
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my $urifile=$uriparts[$#uriparts]; |
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$#uriparts--; |
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my $uripath=join('/',@uriparts); |
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if ($uripath) { |
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my $uricond='0'; |
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if (defined($hash{'conditions_'.$resid})) { |
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$uricond=$captured{$hash{'conditions_'.$resid}}; |
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} |
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if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
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if ($acchash{'acc.res.'.$short.'.'.$uripath}=~ |
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/(\&\Q$urifile\E\:[^\&]*)/) { |
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my $replace=$1; |
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my $regexp=$replace; |
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#$regexp=~s/\|/\\\|/g; |
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$acchash{'acc.res.'.$short.'.'.$uripath} |
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=~s/\Q$regexp\E/$replace\|$uricond/; |
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} else { |
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$acchash{'acc.res.'.$short.'.'.$uripath}.= |
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$urifile.':'.$uricond.'&'; |
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} |
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} else { |
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$acchash{'acc.res.'.$short.'.'.$uripath}= |
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'&'.$urifile.':'.$uricond.'&'; |
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} |
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} |
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} |
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} |
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} |
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$acchash{'acc.res.'.$short.'.'}='&:0&'; |
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my $courseuri=$uri; |
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$courseuri=~s/^\/res\///; |
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&Apache::lonnet::delenv('(acc\.|httpref\.)'); |
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&Apache::lonnet::appenv(%acchash); |
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} |
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# ---------------- Selectively delete from randompick maps and hidden url parms |
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sub hiddenurls { |
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my $randomoutentry=''; |
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foreach my $rid (keys %randompick) { |
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my $rndpick=$randompick{$rid}; |
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my $mpc=$hash{'map_pc_'.$hash{'src_'.$rid}}; |
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# ------------------------------------------- put existing resources into array |
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my @currentrids=(); |
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foreach (sort(keys(%hash))) { |
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if ($_=~/^src_($mpc\.\d+)/) { |
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if ($hash{'src_'.$1}) { push @currentrids, $1; } |
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} |
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} |
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# rids are number.number and we want to numercially sort on |
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# the second number |
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@currentrids=sort { |
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my (undef,$aid)=split(/\./,$a); |
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my (undef,$bid)=split(/\./,$b); |
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$aid <=> $bid; |
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} @currentrids; |
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next if ($#currentrids<$rndpick); |
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# -------------------------------- randomly eliminate the ones that should stay |
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my (undef,$id)=split(/\./,$rid); |
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if ($randompickseed{$rid}) { $id=$randompickseed{$rid}; } |
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my $rndseed=&Apache::lonnet::rndseed($id); # use id instead of symb |
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&Apache::lonnet::setup_random_from_rndseed($rndseed); |
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my @whichids=&Math::Random::random_permuted_index($#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]); |
|
$randomoutentry.='&'. |
|
&Apache::lonnet::symbclean( |
|
&Apache::lonnet::declutter($hash{'map_id_'.$mapid}). |
|
'___'.$resid.'___'. |
|
&Apache::lonnet::declutter($hash{'src_'.$currentrids[$k]}) |
|
).'&'; |
|
} |
|
} |
|
} |
|
# ------------------------------ take care of explicitly hidden urls or folders |
|
foreach my $rid (keys %hiddenurl) { |
|
$hash{'randomout_'.$rid}=1; |
|
my ($mapid,$resid)=split(/\./,$rid); |
|
$randomoutentry.='&'. |
|
&Apache::lonnet::symbclean( |
|
&Apache::lonnet::declutter($hash{'map_id_'.$mapid}). |
|
'___'.$resid.'___'. |
|
&Apache::lonnet::declutter($hash{'src_'.$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 $uri=shift; |
my $short=shift; |
|
$short=~s/^\///; |
|
my %cenv=&Apache::lonnet::coursedescription($short); |
|
my $fn=$cenv{'fn'}; |
|
my $uri; |
|
$short=~s/\//\_/g; |
|
unless ($uri=$cenv{'url'}) { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not load course $short.</font>"); |
|
return 'No course data available.'; |
|
} |
@cond=('true:normal'); |
@cond=('true:normal'); |
%hash=(); |
unlink($fn.'.db'); |
$errtext=''; |
unlink($fn.'_symb.db'); |
$pc=0; |
unlink($fn.'.state'); |
loadmap($uri); |
unlink($fn.'parms.db'); |
if (defined($hash{'map_start_'.$uri})) { |
undef %randompick; |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
undef %hiddenurl; |
|
undef %encurl; |
|
$retfurl=''; |
|
if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) && |
|
(tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) { |
|
%hash=(); |
|
%parmhash=(); |
|
$errtext=''; |
|
$pc=0; |
|
&processversionfile(%cenv); |
|
my $furi=&Apache::lonnet::clutter($uri); |
|
$hash{'src_0.0'}=&versiontrack($furi); |
|
$hash{'title_0.0'}=&Apache::lonnet::metadata($uri,'title'); |
|
$hash{'ids_'.$furi}='0.0'; |
|
$hash{'is_map_0.0'}=1; |
|
loadmap($uri); |
|
if (defined($hash{'map_start_'.$uri})) { |
|
&Apache::lonnet::appenv("request.course.id" => $short, |
|
"request.course.fn" => $fn, |
|
"request.course.uri" => $uri); |
|
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
|
&accinit($uri,$short,$fn); |
|
&hiddenurls(); |
|
} |
|
# ------------------------------------------------------- Put versions into src |
|
foreach (keys %hash) { |
|
if ($_=~/^src\_/) { |
|
$hash{$_}=&putinversion($hash{$_}); |
|
} |
|
} |
|
# ---------------------------------------------------------------- Encrypt URLs |
|
foreach (keys %encurl) { |
|
$hash{'src_'.$_}=&Apache::lonenc::encrypted($hash{'src_'.$_}); |
|
} |
|
# ----------------------------------------------- Close hashes to finally store |
|
# --------------------------------- Routine must pass this point, no early outs |
|
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 $cfh; |
|
if ($cfh=Apache::File->new(">$fn.state")) { |
|
print $cfh join("\n",@cond); |
|
} else { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not write statemap $fn for $uri.</font>"); |
|
} |
|
} |
|
} else { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not tie coursemap $fn for $uri.</font>"); |
} |
} |
|
&Apache::lonmsg::author_res_msg($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); |
} |
} |
|
|
# ---------------------------------------------------------------- Testing only |
# ------------------------------------------------------- Evaluate state string |
|
|
sub handler { |
sub evalstate { |
my $r = shift; |
my $fn=$ENV{'request.course.fn'}.'.state'; |
$r->content_type('text/html'); |
my $state=''; |
$r->send_http_header; |
if (-e $fn) { |
return OK if $r->header_only; |
my @conditions=(); |
readmap('/res/msu/korte/foo.course'); |
{ |
$r->print("<html><body>\n"); |
my $fh=Apache::File->new($fn); |
my $hashkey; |
@conditions=<$fh>; |
foreach $hashkey (sort keys %hash) { |
} |
$r->print("$hashkey: $hash{$hashkey}<br>\n"); |
my $safeeval = new Safe; |
} |
my $safehole = new Safe::Hole; |
my $i; |
$safeeval->permit("entereval"); |
$r->print('<hr>'); |
$safeeval->permit(":base_math"); |
for ($i=0;$i<=$#cond;$i++) { |
$safeeval->deny(":base_io"); |
$r->print($i.' : '.$cond[$i]."<br>\n"); |
$safehole->wrap(\&Apache::lonnet::EXT,$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'; |
|
} |
|
} |
|
} |
} |
} |
$r->print("<h1>$errtext</h1></body></html>\n"); |
&Apache::lonnet::appenv('user.state.'.$ENV{'request.course.id'} => $state); |
return OK; |
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 |