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version 1.3, 2000/08/06 03:25:24
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version 1.136, 2010/06/16 23:42:52
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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 |
|
| # |
# |
| # 05/29/00,05/30 Gerd Kortemeyer) |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
| # 7/1 Gerd Kortemeyer) |
|
| # 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer) |
|
| # |
# |
| # 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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|
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# ------------------------------------------------- modules used by this module |
| use strict; |
use strict; |
| use Apache::Constants qw(:common :http); |
|
| use Apache::File; |
|
| 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 |
| |
|
| my $pc; # Package counter |
my $pc; # Package counter |
| my %hash; # The big tied hash |
my %hash; # The big tied hash |
| |
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 $retfurl; # first URL |
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my %randompick; # randomly picked resources |
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my %randompickseed; # optional seed for randomly picking resources |
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my %randomorder; # maps to order contents randomly |
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my %encurl; # URLs in this folder are supposed to be encrypted |
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my %hiddenurl; # this URL (or complete folder) is supposed to be hidden |
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|
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# ----------------------------------- Remove version from URL and store in hash |
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|
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sub versionerror { |
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my ($uri,$usedversion,$unusedversion)=@_; |
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return '<br />'.&mt('Version discrepancy: resource [_1] included in both version [_2] and version [_3]. Using version [_2].', |
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$uri,$usedversion,$unusedversion).'<br />'; |
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} |
| |
|
| # --------------------------------------------------------- Loads map from disk |
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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} elsif ($version!=$hash{'version_'.$uri}) { |
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$errtext.=&versionerror($uri,$hash{'version_'.$uri},$version); |
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} |
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} |
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return $uri; |
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} |
| |
|
| sub loadmap { |
# -------------------------------------------------------------- Put in version |
| |
|
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sub putinversion { |
| my $uri=shift; |
my $uri=shift; |
| if ($hash{'map_pc_'.$uri}) { return OK; } |
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 $uri; |
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} |
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|
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# ----------------------------------------- Processing versions file for course |
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|
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sub processversionfile { |
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my %cenv=@_; |
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my %versions=&Apache::lonnet::dump('resourceversions', |
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$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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|
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# --------------------------------------------------------- Loads map from disk |
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|
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sub loadmap { |
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my ($uri,$parent_rid)=@_; |
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if ($hash{'map_pc_'.$uri}) { |
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$errtext.='<p class="LC_error">'. |
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&mt('Multiple use of sequence/page [_1]! The course will not function properly.','<tt>'.$uri.'</tt>'). |
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'</p>'; |
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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}=$uri; |
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if ($parent_rid =~ /^(\d+)\.\d+$/) { |
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my $parent_pc = $1; |
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if (defined($hash{'map_hierarchy_'.$parent_pc})) { |
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$hash{'map_hierarchy_'.$lpc}=$hash{'map_hierarchy_'.$parent_pc}.','. |
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$parent_pc; |
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} else { |
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$hash{'map_hierarchy_'.$lpc}=$parent_pc; |
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} |
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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)); |
| |
|
| unless (($fn=~/\.course$/) || |
my $ispage=($fn=~/\.page$/); |
| ($fn=~/\.sequence$/) || |
|
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unless (($fn=~/\.sequence$/) || |
| ($fn=~/\.page$/)) { |
($fn=~/\.page$/)) { |
| $errtext.="Invalid map: $fn\n"; |
$errtext.=&mt("<br />Invalid map: <tt>[_1]</tt>",$fn); |
| return OK; |
return; |
| } |
} |
| |
|
| unless (-e $fn) { |
my $instr=&Apache::lonnet::getfile($fn); |
| my $returned=Apache::lonnet::repcopy($fn); |
|
| unless ($returned eq OK) { |
if ($instr eq -1) { |
| $errtext.="Could not import: $fn - "; |
$errtext.=&mt('<br />Map not loaded: The file <tt>[_1]</tt> does not exist.',$fn); |
| if ($returned eq HTTP_SERVICE_UNAVAILABLE) { |
return; |
| $errtext.="Server unavailable\n"; |
|
| } |
|
| if ($returned eq HTTP_NOT_FOUND) { |
|
| $errtext.="File not found\n"; |
|
| } |
|
| if ($returned eq FORBIDDEN) { |
|
| $errtext.="Access forbidden\n"; |
|
| } |
|
| return OK; |
|
| } |
|
| } |
} |
| |
|
| if (-e $fn) { |
# Successfully got file, parse it |
| my @content; |
|
| { |
|
| my $fh=Apache::File->new($fn); |
|
| @content=<$fh>; |
|
| } |
|
| my $instr=join('',@content); |
|
| my $parser = HTML::TokeParser->new(\$instr); |
|
| my $token; |
|
| |
|
| my $linkpc=0; |
my $parser = HTML::TokeParser->new(\$instr); |
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$parser->attr_encoded(1); |
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# first get all parameters |
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while (my $token = $parser->get_token) { |
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next if ($token->[0] ne 'S'); |
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if ($token->[1] eq 'param') { |
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&parse_param($token,$lpc); |
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} |
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} |
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#reset parser |
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$parser = HTML::TokeParser->new(\$instr); |
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$parser->attr_encoded(1); |
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|
| $fn=~/\.(\w+)$/; |
my $linkpc=0; |
| |
|
| $hash{'map_type_'.$lpc}=$1; |
$fn=~/\.(\w+)$/; |
| |
|
| while ($token = $parser->get_token) { |
$hash{'map_type_'.$lpc}=$1; |
| if ($token->[0] eq 'S') { |
|
| if ($token->[1] eq 'resource') { |
|
| # -------------------------------------------------------------------- Resource |
|
| |
|
| my $rid=$lpc.'.'.$token->[2]->{'id'}; |
my $randomize = ($randomorder{$parent_rid} =~ /^yes$/i); |
| |
|
| $hash{'kind_'.$rid}='res'; |
my @map_ids; |
| $hash{'title_'.$rid}=$token->[2]->{'title'}; |
while (my $token = $parser->get_token) { |
| my $turi=$token->[2]->{'src'}; |
next if ($token->[0] ne 'S'); |
| $hash{'src_'.$rid}=$turi; |
if ($token->[1] eq 'resource') { |
| |
push(@map_ids,&parse_resource($token,$lpc,$ispage,$uri)); |
| if (defined($hash{'ids_'.$turi})) { |
} elsif ($token->[1] eq 'link' && !$randomize) { |
| $hash{'ids_'.$turi}.=','.$rid; |
# ----------------------------------------------------------------------- Links |
| } else { |
&make_link(++$linkpc,$lpc,$token->[2]->{'to'}, |
| $hash{'ids_'.$turi}=''.$rid; |
$token->[2]->{'from'}, |
| } |
$token->[2]->{'condition'}); |
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} elsif ($token->[1] eq 'condition' && !$randomize) { |
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&parse_condition($token,$lpc); |
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} |
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} |
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|
| if ($token->[2]->{'src'}=~/\/\//) { |
if ($randomize) { |
| $hash{'ext_'.$rid}='true:'; |
if (!$env{'request.role.adv'}) { |
| } else { |
my $seed; |
| $hash{'ext_'.$rid}='false:'; |
if (defined($randompickseed{$parent_rid})) { |
| } |
$seed = $randompickseed{$parent_rid}; |
| if ($token->[2]->{'type'}) { |
} else { |
| $hash{'type_'.$rid}=$token->[2]->{'type'}; |
my ($mapid,$resid)=split(/\./,$parent_rid); |
| if ($token->[2]->{'type'} eq 'start') { |
my $symb= |
| $hash{'map_start_'.$uri}="$rid"; |
&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid}, |
| } |
$resid,$hash{'src_'.$parent_rid}); |
| if ($token->[2]->{'type'} eq 'finish') { |
|
| $hash{'map_finish_'.$uri}="$rid"; |
$seed = $symb; |
| } |
} |
| } else { |
|
| $hash{'type_'.$rid}='normal'; |
my $rndseed=&Apache::lonnet::rndseed($seed); |
| } |
&Apache::lonnet::setup_random_from_rndseed($rndseed); |
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@map_ids=&Math::Random::random_permutation(@map_ids); |
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} |
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my $from = shift(@map_ids); |
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my $from_rid = $lpc.'.'.$from; |
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$hash{'map_start_'.$uri} = $from_rid; |
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$hash{'type_'.$from_rid}='start'; |
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|
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while (my $to = shift(@map_ids)) { |
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&make_link(++$linkpc,$lpc,$to,$from); |
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my $to_rid = $lpc.'.'.$to; |
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$hash{'type_'.$to_rid}='normal'; |
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$from = $to; |
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$from_rid = $to_rid; |
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} |
| |
|
| if (($turi=~/\.course$/) || |
$hash{'map_finish_'.$uri}= $from_rid; |
| ($turi=~/\.sequence$/) || |
$hash{'type_'.$from_rid}='finish'; |
| ($turi=~/\.page$/)) { |
} |
| $hash{'is_map_'.$rid}=1; |
|
| &loadmap($turi); |
|
| } |
|
| |
|
| } elsif ($token->[1] eq 'condition') { |
|
| # ------------------------------------------------------------------- Condition |
|
| |
|
| my $rid=$lpc.'.'.$token->[2]->{'id'}; |
$parser = HTML::TokeParser->new(\$instr); |
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$parser->attr_encoded(1); |
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# last parse out the mapalias params so as to ignore anything |
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# refering to non-existant resources |
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while (my $token = $parser->get_token) { |
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next if ($token->[0] ne 'S'); |
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if ($token->[1] eq 'param') { |
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&parse_mapalias_param($token,$lpc); |
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} |
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} |
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} |
| |
|
| $hash{'kind_'.$rid}='cond'; |
|
| $cond[$#cond+1]=$token->[2]->{'value'}; |
|
| $hash{'condid_'.$rid}=$#cond; |
|
| if ($token->[2]->{'type'}) { |
|
| $cond[$#cond].=':'.$token->[2]->{'type'}; |
|
| } else { |
|
| $cond[$#cond].=':normal'; |
|
| } |
|
| |
|
| } elsif ($token->[1] eq 'link') { |
# -------------------------------------------------------------------- Resource |
| # ----------------------------------------------------------------------- Links |
sub parse_resource { |
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my ($token,$lpc,$ispage,$uri) = @_; |
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if ($token->[2]->{'type'} eq 'zombie') { next; } |
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my $rid=$lpc.'.'.$token->[2]->{'id'}; |
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|
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$hash{'kind_'.$rid}='res'; |
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$hash{'title_'.$rid}=$token->[2]->{'title'}; |
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my $turi=&versiontrack($token->[2]->{'src'}); |
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if ($token->[2]->{'version'}) { |
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unless ($hash{'version_'.$turi}) { |
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$hash{'version_'.$turi}=$1; |
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} |
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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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$turi=~s/^https?\:\/\//\/adm\/wrapper\/ext\//; |
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} elsif ($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 |
| |
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}.=','.$rid; |
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} else { |
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$hash{'ids_'.$idsuri}=''.$rid; |
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} |
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|
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if ($turi=~/\/(syllabus|aboutme|navmaps|smppg|bulletinboard|viewclasslist)$/) { |
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$turi.='?register=1'; |
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} |
| |
|
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$hash{'src_'.$rid}=$turi; |
| |
|
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if ($token->[2]->{'external'} eq 'true') { |
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$hash{'ext_'.$rid}='true:'; |
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} else { |
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$hash{'ext_'.$rid}='false:'; |
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} |
| |
if ($token->[2]->{'type'}) { |
| |
$hash{'type_'.$rid}=$token->[2]->{'type'}; |
| |
if ($token->[2]->{'type'} eq 'start') { |
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$hash{'map_start_'.$uri}="$rid"; |
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} |
| |
if ($token->[2]->{'type'} eq 'finish') { |
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$hash{'map_finish_'.$uri}="$rid"; |
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} |
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} else { |
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$hash{'type_'.$rid}='normal'; |
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} |
| |
|
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if (($turi=~/\.sequence$/) || |
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($turi=~/\.page$/)) { |
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$hash{'is_map_'.$rid}=1; |
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&loadmap($turi,$rid); |
| |
} |
| |
return $token->[2]->{'id'}; |
| |
} |
| |
|
| $linkpc++; |
sub make_link { |
| my $linkid=$lpc.'.'.$linkpc; |
my ($linkpc,$lpc,$to,$from,$condition) = @_; |
| |
|
| |
my $linkid=$lpc.'.'.$linkpc; |
| |
my $goesto=$lpc.'.'.$to; |
| |
my $comesfrom=$lpc.'.'.$from; |
| |
my $undercond=0; |
| |
|
| my $goesto=$lpc.'.'.$token->[2]->{'to'}; |
if ($condition) { |
| my $comesfrom=$lpc.'.'.$token->[2]->{'from'}; |
$undercond=$lpc.'.'.$condition; |
| my $undercond=0; |
} |
| |
|
| if ($token->[2]->{'condition'}) { |
$hash{'goesto_'.$linkid}=$goesto; |
| $undercond=$lpc.'.'.$token->[2]->{'condition'}; |
$hash{'comesfrom_'.$linkid}=$comesfrom; |
| } |
$hash{'undercond_'.$linkid}=$undercond; |
| |
|
| $hash{'goesto_'.$linkid}=$goesto; |
if (defined($hash{'to_'.$comesfrom})) { |
| $hash{'comesfrom_'.$linkid}=$comesfrom; |
$hash{'to_'.$comesfrom}.=','.$linkid; |
| $hash{'undercond_'.$linkid}=$undercond; |
} else { |
| |
$hash{'to_'.$comesfrom}=''.$linkid; |
| if (defined($hash{'to_'.$comesfrom})) { |
} |
| $hash{'to_'.$comesfrom}.=','.$linkid; |
if (defined($hash{'from_'.$goesto})) { |
| } else { |
$hash{'from_'.$goesto}.=','.$linkid; |
| $hash{'to_'.$comesfrom}=''.$linkid; |
} else { |
| } |
$hash{'from_'.$goesto}=''.$linkid; |
| if (defined($hash{'from_'.$goesto})) { |
} |
| $hash{'from_'.$goesto}.=','.$linkid; |
} |
| } else { |
|
| $hash{'from_'.$goesto}=''.$linkid; |
|
| } |
|
| } |
|
| |
|
| } |
# ------------------------------------------------------------------- Condition |
| } |
sub parse_condition { |
| |
my ($token,$lpc) = @_; |
| |
my $rid=$lpc.'.'.$token->[2]->{'id'}; |
| |
|
| |
$hash{'kind_'.$rid}='cond'; |
| |
|
| |
my $condition = $token->[2]->{'value'}; |
| |
$condition =~ s/[\n\r]+/ /gs; |
| |
push(@cond, $condition); |
| |
$hash{'condid_'.$rid}=$#cond; |
| |
if ($token->[2]->{'type'}) { |
| |
$cond[$#cond].=':'.$token->[2]->{'type'}; |
| |
} else { |
| |
$cond[$#cond].=':normal'; |
| |
} |
| |
} |
| |
|
| |
# ------------------------------------------------------------------- Parameter |
| |
|
| |
sub parse_param { |
| |
my ($token,$lpc) = @_; |
| |
my $referid=$lpc.'.'.$token->[2]->{'to'}; |
| |
my $name=$token->[2]->{'name'}; |
| |
my $part; |
| |
if ($name=~/^parameter_(.*)_/) { |
| |
$part=$1; |
| } else { |
} else { |
| $errtext.='Map not loaded: The file does not exist. '; |
$part=0; |
| |
} |
| |
$name=~s/^.*_([^_]*)$/$1/; |
| |
my $newparam= |
| |
&escape($token->[2]->{'type'}).':'. |
| |
&escape($part.'.'.$name).'='. |
| |
&escape($token->[2]->{'value'}); |
| |
if (defined($hash{'param_'.$referid})) { |
| |
$hash{'param_'.$referid}.='&'.$newparam; |
| |
} else { |
| |
$hash{'param_'.$referid}=''.$newparam; |
| |
} |
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*randompick$/) { |
| |
$randompick{$referid}=$token->[2]->{'value'}; |
| |
} |
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*randompickseed$/) { |
| |
$randompickseed{$referid}=$token->[2]->{'value'}; |
| |
} |
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*randomorder$/) { |
| |
$randomorder{$referid}=$token->[2]->{'value'}; |
| |
} |
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*encrypturl$/) { |
| |
if ($token->[2]->{'value'}=~/^yes$/i) { |
| |
$encurl{$referid}=1; |
| |
} |
| |
} |
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*hiddenresource$/) { |
| |
if ($token->[2]->{'value'}=~/^yes$/i) { |
| |
$hiddenurl{$referid}=1; |
| |
} |
| |
} |
| |
} |
| |
|
| |
sub parse_mapalias_param { |
| |
my ($token,$lpc) = @_; |
| |
my $referid=$lpc.'.'.$token->[2]->{'to'}; |
| |
return if (!exists($hash{'src_'.$referid})); |
| |
|
| |
if ($token->[2]->{'name'}=~/^parameter_(0_)*mapalias$/) { |
| |
&count_mapalias($token->[2]->{'value'},$referid); |
| |
$hash{'mapalias_'.$token->[2]->{'value'}}=$referid; |
| } |
} |
| } |
} |
| |
|
| # --------------------------------------------------------- Simplify expression |
# --------------------------------------------------------- Simplify expression |
| |
|
| sub simplify { |
sub simplify { |
| my $expression=shift; |
my $expression=shift; |
| # "True and" is nothing |
# (0&1) = 1 |
| $expression=~s/0\&//g; |
$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+)\&\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; |
| # ((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 $expression; |
| } |
} |
| |
|
| # -------------------------------------------------------- Build condition hash |
# -------------------------------------------------------- Build condition hash |
| |
|
| sub traceroute { |
sub traceroute { |
| my ($sofar,$rid,$beenhere)=@_; |
my ($sofar,$rid,$beenhere,$encflag,$hdnflag)=@_; |
| $sofar=simplify($sofar); |
my $newsofar=$sofar=simplify($sofar); |
| unless ($beenhere=~/\&$rid\&/) { |
unless ($beenhere=~/\&\Q$rid\E\&/) { |
| $beenhere.=$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}); |
| |
my $hidden=&Apache::lonnet::EXT('resource.0.hiddenresource',$symb); |
| |
|
| |
if ($hdnflag || lc($hidden) eq 'yes') { |
| |
$hiddenurl{$rid}=1; |
| |
} |
| |
if (!$hdnflag && lc($hidden) eq 'no') { |
| |
delete($hiddenurl{$rid}); |
| |
} |
| |
|
| |
my $encrypt=&Apache::lonnet::EXT('resource.0.encrypturl',$symb); |
| |
if ($encflag || lc($encrypt) eq 'yes') { $encurl{$rid}=1; } |
| |
if (($retfrid eq '') && ($hash{'src_'.$rid}) |
| |
&& ($hash{'src_'.$rid}!~/\.sequence$/)) { |
| |
$retfrid=$rid; |
| |
} |
| |
if (defined($hash{'conditions_'.$rid})) { |
| |
$hash{'conditions_'.$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_'.$rid})) { |
|
| if (defined($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= |
|
| $hash{'conditions_'.$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 { |
$beenhere, |
| |
$encflag || $encurl{$rid}, |
| |
$hdnflag || $hiddenurl{$rid}); |
| |
} |
| |
} |
| |
if (defined($hash{'to_'.$rid})) { |
| |
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_'.$_}.'. '; |
} |
| } |
|
| } |
} |
| &traceroute($further,$hash{'goesto_'.$_},$beenhere); |
$newsofar=&traceroute($further,$hash{'goesto_'.$id},$beenhere, |
| } split(/\,/,$hash{'to_'.$rid}); |
$encflag,$hdnflag); |
| } |
} |
| |
} |
| |
} |
| |
return $newsofar; |
| |
} |
| |
|
| |
# ------------------------------ Cascading conditions, quick access, parameters |
| |
|
| |
sub accinit { |
| |
my ($uri,$short,$fn)=@_; |
| |
my %acchash=(); |
| |
my %captured=(); |
| |
my $condcounter=0; |
| |
$acchash{'acc.cond.'.$short.'.0'}=0; |
| |
foreach my $key (keys(%hash)) { |
| |
if ($key=~/^conditions/) { |
| |
my $expr=$hash{$key}; |
| |
# try to find and factor out common sub-expressions |
| |
foreach my $sub ($expr=~m/(\(\([_\.\d]+(?:\&[_\.\d]+)+\)(?:\|\([_\.\d]+(?:\&[_\.\d]+)+\))+\))/g) { |
| |
my $orig=$sub; |
| |
|
| |
my ($factor) = ($sub=~/\(\(([_\.\d]+\&(:?[_\.\d]+\&)*)(?:[_\.\d]+\&*)+\)(?:\|\(\1(?:[_\.\d]+\&*)+\))+\)/); |
| |
next if (!defined($factor)); |
| |
|
| |
$sub=~s/\Q$factor\E//g; |
| |
$sub=~s/^\(/\($factor\(/; |
| |
$sub.=')'; |
| |
$sub=simplify($sub); |
| |
$expr=~s/\Q$orig\E/$sub/; |
| |
} |
| |
$hash{$key}=$expr; |
| |
unless (defined($captured{$expr})) { |
| |
$condcounter++; |
| |
$captured{$expr}=$condcounter; |
| |
$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
| |
} |
| |
} elsif ($key=~/^param_(\d+)\.(\d+)/) { |
| |
my $prefix=&Apache::lonnet::encode_symb($hash{'map_id_'.$1},$2, |
| |
$hash{'src_'.$1.'.'.$2}); |
| |
foreach my $param (split(/\&/,$hash{$key})) { |
| |
my ($typename,$value)=split(/\=/,$param); |
| |
my ($type,$name)=split(/\:/,$typename); |
| |
$parmhash{$prefix.'.'.&unescape($name)}= |
| |
&unescape($value); |
| |
$parmhash{$prefix.'.'.&unescape($name).'.type'}= |
| |
&unescape($type); |
| |
} |
| |
} |
| |
} |
| |
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\///; |
| |
my $regexp = 1; |
| |
&Apache::lonnet::delenv('(acc\.|httpref\.)',$regexp); |
| |
&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, $1; } |
| |
} |
| |
} |
| |
# rids are number.number and we want to numercially sort on |
| |
# the second number |
| |
@currentrids=sort { |
| |
my (undef,$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]} |
| |
).'&'; |
| |
} |
| |
} |
| |
} |
| |
# ------------------------------ take care of explicitly hidden urls or folders |
| |
foreach my $rid (keys %hiddenurl) { |
| |
$hash{'randomout_'.$rid}=1; |
| |
my ($mapid,$resid)=split(/\./,$rid); |
| |
$randomoutentry.='&'. |
| |
&Apache::lonnet::encode_symb($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 $uri=shift; |
my $short=shift; |
| @cond=('true:normal'); |
$short=~s/^\///; |
| %hash=(); |
my %cenv=&Apache::lonnet::coursedescription($short,{'freshen_cache'=>1}); |
| $errtext=''; |
my $fn=$cenv{'fn'}; |
| $pc=0; |
my $uri; |
| loadmap($uri); |
$short=~s/\//\_/g; |
| if (defined($hash{'map_start_'.$uri})) { |
unless ($uri=$cenv{'url'}) { |
| &traceroute('0',$hash{'map_start_'.$uri},'&'); |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| } |
"Could not load course $short.</font>"); |
| } |
return ('',&mt('No course data available.'));; |
| |
|
| # ---------------------------------------------------------------- Testing only |
|
| |
|
| sub handler { |
|
| my $r = shift; |
|
| $r->content_type('text/html'); |
|
| $r->send_http_header; |
|
| return OK if $r->header_only; |
|
| readmap('/res/msu/korte/foo.course'); |
|
| $r->print("<html><body>\n"); |
|
| my $hashkey; |
|
| foreach $hashkey (sort keys %hash) { |
|
| $r->print("$hashkey: $hash{$hashkey}<br>\n"); |
|
| } |
|
| my $i; |
|
| $r->print('<hr>'); |
|
| for ($i=0;$i<=$#cond;$i++) { |
|
| $r->print($i.' : '.$cond[$i]."<br>\n"); |
|
| } |
} |
| $r->print("<h1>$errtext</h1></body></html>\n"); |
@cond=('true:normal'); |
| return OK; |
|
| |
unless (open(LOCKFILE,">$fn.db.lock")) { |
| |
$errtext.='<br />'.&mt('Map not loaded - Lock file could not be opened when reading map:').' <tt>'.$fn.'</tt>.'; |
| |
$retfurl = ''; |
| |
return ($retfurl,$errtext); |
| |
} |
| |
my $lock=0; |
| |
my $gotstate=0; |
| |
if (flock(LOCKFILE,LOCK_EX|LOCK_NB)) { |
| |
$lock=1; |
| |
&unlink_tmpfiles($fn); |
| |
} |
| |
undef %randompick; |
| |
undef %hiddenurl; |
| |
undef %encurl; |
| |
$retfrid=''; |
| |
my ($untiedhash,$untiedparmhash,$tiedhash,$tiedparmhash); |
| |
if ($lock) { |
| |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) { |
| |
$tiedhash = 1; |
| |
if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640)) { |
| |
$tiedparmhash = 1; |
| |
$gotstate = &build_tmp_hashes($uri,$fn,$short,\%cenv); |
| |
unless ($gotstate) { |
| |
&Apache::lonnet::logthis('Failed to write statemap at first attempt '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
$untiedparmhash = untie(%parmhash); |
| |
unless ($untiedparmhash) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap parmhash '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
} |
| |
$untiedhash = untie(%hash); |
| |
unless ($untiedhash) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap hash '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
} |
| |
flock(LOCKFILE,LOCK_UN); |
| |
} |
| |
unless ($lock && $tiedhash && $tiedparmhash) { |
| |
# if we are here it is likely because we are already trying to |
| |
# initialize the course in another child, busy wait trying to |
| |
# tie the hashes for the next 90 seconds, if we succeed forward |
| |
# them on to navmaps, if we fail, throw up the Could not init |
| |
# course screen |
| |
if ($lock) { |
| |
# Got the lock but not the DB files |
| |
flock(LOCKFILE,LOCK_UN); |
| |
$lock = 0; |
| |
} |
| |
if ($tiedhash) { |
| |
unless($untiedhash) { |
| |
untie(%hash); |
| |
} |
| |
} |
| |
if ($tiedparmhash) { |
| |
unless($untiedparmhash) { |
| |
untie(%parmhash); |
| |
} |
| |
} |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
"Could not tie coursemap $fn for $uri.</font>"); |
| |
$tiedhash = ''; |
| |
$tiedparmhash = ''; |
| |
my $i=0; |
| |
while($i<90) { |
| |
$i++; |
| |
sleep(1); |
| |
if (flock(LOCKFILE,LOCK_EX|LOCK_NB)) { |
| |
$lock = 1; |
| |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { |
| |
$tiedhash = 1; |
| |
if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_READER(),0640)) { |
| |
$tiedparmhash = 1; |
| |
if (-e "$fn.state") { |
| |
$retfurl='/adm/navmaps'; |
| |
&Apache::lonnet::appenv({"request.course.id" => $short, |
| |
"request.course.fn" => $fn, |
| |
"request.course.uri" => $uri}); |
| |
$untiedhash = untie(%hash); |
| |
$untiedparmhash = untie(%parmhash); |
| |
$gotstate = 1; |
| |
last; |
| |
} |
| |
$untiedparmhash = untie(%parmhash); |
| |
} |
| |
$untiedhash = untie(%hash); |
| |
} |
| |
} |
| |
} |
| |
if ($lock) { |
| |
flock(LOCKFILE,LOCK_UN); |
| |
$lock = 0; |
| |
if ($tiedparmhash) { |
| |
unless ($untiedparmhash) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap parmhash '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
} |
| |
if ($tiedparmhash) { |
| |
unless ($untiedhash) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap hash '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
} |
| |
} |
| |
} |
| |
unless ($gotstate) { |
| |
$lock = 0; |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not read statemap '.$fn.' for '.$uri.'.</font>'); |
| |
&unlink_tmpfiles($fn); |
| |
if (flock(LOCKFILE,LOCK_EX|LOCK_NB)) { |
| |
$lock=1; |
| |
} |
| |
undef %randompick; |
| |
undef %hiddenurl; |
| |
undef %encurl; |
| |
$retfrid=''; |
| |
if ($lock) { |
| |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) { |
| |
if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640)) { |
| |
$gotstate = &build_tmp_hashes($uri,$fn,$short,\%cenv); |
| |
unless ($gotstate) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Failed to write statemap at second attempt '.$fn.' for '.$uri.'.</font>'); |
| |
} |
| |
unless (untie(%parmhash)) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap parmhash '.$fn.'.db for '.$uri.'.</font>'); |
| |
} |
| |
} else { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not tie coursemap '.$fn.'__parms.db for '.$uri.'.</font>'); |
| |
} |
| |
unless (untie(%hash)) { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not untie coursemap hash '.$fn.'.db for '.$uri.'.</font>'); |
| |
} |
| |
} else { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not tie coursemap '.$fn.'.db for '.$uri.'.</font>'); |
| |
} |
| |
flock(LOCKFILE,LOCK_UN); |
| |
$lock = 0; |
| |
} else { |
| |
&Apache::lonnet::logthis('<font color="blue">WARNING: '. |
| |
'Could not obtain lock to tie coursemap hash '.$fn.'.db for '.$uri.'.</font>'); |
| |
} |
| |
} |
| |
close(LOCKFILE); |
| |
unless (($errtext eq '') || ($env{'request.course.uri'} =~ m{^/uploaded/})) { |
| |
&Apache::lonmsg::author_res_msg($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,$errtext); |
| } |
} |
| |
|
| |
sub build_tmp_hashes { |
| |
my ($uri,$fn,$short,$cenvref) = @_; |
| |
unless(ref($cenvref) eq 'HASH') { |
| |
return; |
| |
} |
| |
my %cenv = %{$cenvref}; |
| |
my $gotstate = 0; |
| |
%hash=(); |
| |
%parmhash=(); |
| |
$errtext=''; |
| |
$pc=0; |
| |
&clear_mapalias_count(); |
| |
&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,'0.0'); |
| |
if (defined($hash{'map_start_'.$uri})) { |
| |
&Apache::lonnet::appenv({"request.course.id" => $short, |
| |
"request.course.fn" => $fn, |
| |
"request.course.uri" => $uri}); |
| |
$env{'request.course.id'}=$short; |
| |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
| |
&accinit($uri,$short,$fn); |
| |
&hiddenurls(); |
| |
} |
| |
$errtext .= &get_mapalias_errors(); |
| |
# ------------------------------------------------------- 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; |
| |
# ---------------------------------------------------- Store away initial state |
| |
{ |
| |
my $cfh; |
| |
if (open($cfh,">$fn.state")) { |
| |
print $cfh join("\n",@cond); |
| |
$gotstate = 1; |
| |
} else { |
| |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
| |
"Could not write statemap $fn for $uri.</font>"); |
| |
} |
| |
} |
| |
return $gotstate; |
| |
} |
| |
|
| |
sub unlink_tmpfiles { |
| |
my ($fn) = @_; |
| |
if ($fn =~ m{^\Q$Apache::lonnet::perlvar{'lonUsersDir'}\E/tmp/}) { |
| |
my @files = qw (.db _symb.db .state _parms.db); |
| |
foreach my $file (@files) { |
| |
if (-e $fn.$file) { |
| |
unless (unlink($fn.$file)) { |
| |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
| |
"Could not unlink ".$fn.$file."</font>"); |
| |
} |
| |
} |
| |
} |
| |
} |
| |
return; |
| |
} |
| |
|
| |
# ------------------------------------------------------- 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 $state; |
| |
} |
| |
|
| |
{ |
| |
my %mapalias_cache; |
| |
sub count_mapalias { |
| |
my ($value,$resid) = @_; |
| |
push(@{ $mapalias_cache{$value} }, $resid); |
| |
} |
| |
|
| |
sub get_mapalias_errors { |
| |
my $error_text; |
| |
foreach my $mapalias (sort(keys(%mapalias_cache))) { |
| |
next if (scalar(@{ $mapalias_cache{$mapalias} } ) == 1); |
| |
my $count; |
| |
my $which = |
| |
join('</li><li>', |
| |
map { |
| |
my $id = $_; |
| |
if (exists($hash{'src_'.$id})) { |
| |
$count++; |
| |
} |
| |
my ($mapid) = split(/\./,$id); |
| |
&mt('Resource "[_1]" <br /> in Map "[_2]"', |
| |
$hash{'title_'.$id}, |
| |
$hash{'title_'.$hash{'ids_'.$hash{'map_id_'.$mapid}}}); |
| |
} (@{ $mapalias_cache{$mapalias} })); |
| |
next if ($count < 2); |
| |
$error_text .= '<div class="LC_error">'. |
| |
&mt('Error: Found the mapalias "[_1]" defined multiple times.', |
| |
$mapalias). |
| |
'</div><ul><li>'.$which.'</li></ul>'; |
| |
} |
| |
&clear_mapalias_count(); |
| |
return $error_text; |
| |
} |
| |
sub clear_mapalias_count { |
| |
undef(%mapalias_cache); |
| |
} |
| |
} |
| 1; |
1; |
| __END__ |
__END__ |
| |
|
| |
=head1 NAME |
| |
|
| |
Apache::lonuserstate - Construct and maintain state and binary representation |
| |
of course for user |
| |
|
| |
=head1 SYNOPSIS |
| |
|
| |
Invoked by lonroles.pm. |
| |
|
| |
&Apache::lonuserstate::readmap($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 SUBROUTINES |
| |
|
| |
=over |
| |
|
| |
=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 |
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