--- rat/lonpage.pm 2000/09/25 20:31:33 1.9 +++ rat/lonpage.pm 2020/06/03 03:48:37 1.120.2.2 @@ -1,18 +1,53 @@ # The LearningOnline Network with CAPA # Page Handler # -# (TeX Content Handler +# $Id: lonpage.pm,v 1.120.2.2 2020/06/03 03:48:37 raeburn Exp $ # -# 05/29/00,05/30 Gerd Kortemeyer) -# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23 Gerd Kortemeyer +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# +### + + + package Apache::lonpage; use strict; use Apache::Constants qw(:common :http); -use Apache::lonnet(); +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonhtmlcommon; +use Apache::lonxml(); +use Apache::lonlocal; +use Apache::lonmenu; +use Apache::lonhomework; +use Apache::lonparmset; use HTML::TokeParser; use GDBM_File; +use Apache::lonsequence; +use lib '/home/httpd/lib/perl/'; +use LONCAPA; + # -------------------------------------------------------------- Module Globals my %hash; @@ -36,48 +71,70 @@ sub euclid { sub tracetable { my ($sofar,$rid,$beenhere)=@_; my $further=$sofar; + my $randomout=0; + unless ($env{'request.role.adv'}) { + $randomout = $hash{'randomout_'.$rid}; + } unless ($beenhere=~/\&$rid\&/) { - $beenhere.=$rid.'&'; - - if (defined($hash{'is_map_'.$rid})) { - if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && - (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { - my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; - $sofar= - &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, - '&'.$frid.'&'); - $sofar++; - if ($hash{'src_'.$frid}) { - my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - if (defined($rows[$sofar])) { - $rows[$sofar].='&'.$frid; - } else { - $rows[$sofar]=$frid; - } - } - } - } - } else { - $sofar++; - if ($hash{'src_'.$rid}) { - my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - if (defined($rows[$sofar])) { - $rows[$sofar].='&'.$rid; - } else { - $rows[$sofar]=$rid; - } - } - } - } - - if (defined($hash{'to_'.$rid})) { - map { - my $now=&tracetable($sofar,$hash{'goesto_'.$_},$beenhere); - if ($now>$further) { $further=$now; } - } split(/\,/,$hash{'to_'.$rid}); - } + $beenhere.=$rid.'&'; + unless ($randomout) { + if (defined($hash{'is_map_'.$rid})) { + if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && + (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { + my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; + $sofar= + &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, + '&'.$frid.$beenhere); + $sofar++; + if ($hash{'src_'.$frid}) { + my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); + if (($brepriv eq '2') || ($brepriv eq 'F')) { + if (defined($rows[$sofar])) { + $rows[$sofar].='&'.$frid; + } else { + $rows[$sofar]=$frid; + } + } + } + } + } else { + $sofar++; + if ($hash{'src_'.$rid}) { + my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); + if (($brepriv eq '2') || ($brepriv eq 'F')) { + if (defined($rows[$sofar])) { + $rows[$sofar].='&'.$rid; + } else { + $rows[$sofar]=$rid; + } + } + } + } + } + + if (defined($hash{'to_'.$rid})) { + my $mincond=1; + my $next=''; + foreach (split(/\,/,$hash{'to_'.$rid})) { + my $thiscond= + &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); + if ($thiscond>=$mincond) { + if ($next) { + $next.=','.$_.':'.$thiscond; + } else { + $next=$_.':'.$thiscond; + } + if ($thiscond>$mincond) { $mincond=$thiscond; } + } + } + foreach (split(/\,/,$next)) { + my ($linkid,$condval)=split(/\:/,$_); + if ($condval>=$mincond) { + my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere); + if ($now>$further) { $further=$now; } + } + } + } } return $further; } @@ -90,37 +147,74 @@ sub handler { # ------------------------------------------- Set document type for header only if ($r->header_only) { - if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); + if ($env{'browser.mathml'}) { + &Apache::loncommon::content_type($r,'text/xml'); } else { - $r->content_type('text/html'); + &Apache::loncommon::content_type($r,'text/html'); } $r->send_http_header; return OK; } - - my $requrl=$r->uri; + + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['forceselect','launch']); + my $number_of_columns = 1; + my $requrl=$r->uri; + my $target = $env{'form.grade_target'}; + +# Short term solution: define target as 'tex_answer' when retrieving answers +# for resources in a .page when generating printouts. +# A better long-term fix would be to modify the way problem rendering, and +# answer rendering are retrieved for individual resources when printing a .page, +# so rendered problem and answer are sequential for individual resources in +# the .page +# + if ($target eq 'answer') { + if ($env{'form.answer_output_mode'} eq 'tex') { + $target = 'tex_answer'; + } + } +# &Apache::lonnet::logthis("Got a target of $target"); + if ($target eq 'meta') { + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + return OK; + } # ----------------------------------------------------------------- Tie db file - if ($ENV{'request.course.fn'}) { - my $fn=$ENV{'request.course.fn'}; + if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) { + my $fn=$env{'request.course.fn'}; if (-e "$fn.db") { - if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { + my %buttonshide; + if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) { # ------------------------------------------------------------------- Hash tied my $firstres=$hash{'map_start_'.$requrl}; my $lastres=$hash{'map_finish_'.$requrl}; if (($firstres) && ($lastres)) { +# ------------------------------------------------------------- Countdown Timer + my $now = time; + my ($pagefirstaccess,%hastimeleft,%countdowndisp,%donebutton, + %donebtnextra,%buttonbytime,$donetime,$symbtosetdone); + my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser(); + unless ($pagesymb) { + $pagesymb=&Apache::lonnet::symbread($requrl); + } + if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) { + my %times=&Apache::lonnet::get('firstaccesstimes', + [$courseid."\0".$pagesymb], + $domain,$name); + if ($times{$courseid."\0".$pagesymb} =~ /^\d+$/) { + $pagefirstaccess = $times{$courseid."\0".$pagesymb}; + if ($pagefirstaccess && $env{'form.LC_interval_done'} eq 'true') { + $donetime = $now - $pagefirstaccess; + } + } + } + # ----------------------------------------------------------------- Render page @rows=(); - &tracetable(0,$firstres,'&'.$lastres.'&'); - if ($hash{'src_'.$lastres}) { - my $brepriv= - &Apache::lonnet::allowed('bre',$hash{'src_'.$lastres}); - if (($brepriv eq '2') || ($brepriv eq 'F')) { - $rows[$#rows+1]=''.$lastres; - } - } + &tracetable(0,$firstres,'&'); # ------------------------------------------------------------ Add to symb list @@ -129,9 +223,32 @@ sub handler { for ($i=0;$i<=$#rows;$i++) { if ($rows[$i]) { my @colcont=split(/\&/,$rows[$i]); - map { - $symbhash{$hash{'src_'.$_}}=''; - } @colcont; + foreach my $rid (@colcont) { + my ($mapid,$resid)=split(/\./,$rid); + $symbhash{$hash{'src_'.$rid}}= + [$hash{'src_'.$rid},$resid]; + if (($donetime) && ($symbtosetdone eq '')) { + my $src = $hash{'src_'.$rid}; + if ($hash{'encrypted_'.$rid}) { + $src=&Apache::lonenc::encrypted($src); + } + my ($mapid,$resid)=split(/\./,$rid); + my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src); + if ($src =~ /$LONCAPA::assess_re/) { + my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb); + if (@interval > 1) { + if (($interval[1] eq 'map') && ($pagefirstaccess)) { + my ($timelimit) = ($interval[0] =~ /^(\d+)/); + if ($timelimit) { + if ($pagefirstaccess + $timelimit > $now) { + $symbtosetdone = $symb; + } + } + } + } + } + } + } } } &Apache::lonnet::symblist($requrl,%symbhash); @@ -142,6 +259,11 @@ sub handler { my $lcm=1; my $contents=0; my $nforms=0; + my $nuploads=0; + my $ntimers=0; + my %turninpaths; + my %multiresps; + my $turninparent; my %ssibody=(); my %ssibgcolor=(); @@ -149,7 +271,9 @@ sub handler { my %ssilink=(); my %ssivlink=(); my %ssialink=(); + my %cellemb=(); + my %cellexternal=(); my $allscript=''; my $allmeta=''; @@ -158,6 +282,16 @@ sub handler { my $xmlheader=''; my $xmlbody=''; +# ---------------------------------------------------------- Handle Done button + + # Set the event timer to zero if the "done button" was clicked. + if ($donetime && $symbtosetdone) { + &Apache::lonparmset::storeparm_by_symb_inner($symbtosetdone,'0_interval', + 2,$donetime,'date_interval', + $name,$domain); + undef($env{'form.LC_interval_done'}); + } + # --------------------------------------------- Get SSI output, post parameters for ($i=0;$i<=$#rows;$i++) { @@ -165,29 +299,87 @@ sub handler { $contents++; my @colcont=split(/\&/,$rows[$i]); $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); - map { + foreach (@colcont) { my $src=$hash{'src_'.$_}; - $src=~/\.(\w+)$/; - $cellemb{$_}=Apache::lonnet::fileembstyle($1); - if ($cellemb{$_} eq 'ssi') { + my $plainsrc = $src; + my ($extension)=($src=~/\.(\w+)$/); + $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:'); + if ($hash{'encrypted_'.$_}) { + $src=&Apache::lonenc::encrypted($src); + } + my ($mapid,$resid)=split(/\./,$_); + my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src); + unless ($env{'request.role.adv'}) { + $buttonshide{$symb} = &Apache::lonnet::EXT("resource.0.buttonshide",$symb); + } + $cellemb{$_}= + &Apache::loncommon::fileembstyle($extension); + if ($cellexternal{$_}) { + unless (($target eq 'tex') || ($target eq 'tex_answer')) { + $ssibody{$_} = <No iframe support! +ENDEXT + } + } elsif ($cellemb{$_} eq 'ssi') { # --------------------------------------------------------- This is an SSI cell - my $prefix=$_.'_'; - my %posthash=('request.prefix' => $prefix); - if (($ENV{'form.'.$prefix.'submit'}) - || ($ENV{'form.all_submit'})) { - map { - if ($_=~/^form.$prefix/) { - my $name=$_; - $name=~s/^form.$prefix//; - $posthash{$name}=$ENV{$_}; - } - } keys %ENV; + my $prefix='p_'.$_.'_'; + my $idprefix='p_'.join('_',($mapid,$resid,'')); + my %posthash=('request.prefix' => $prefix, + 'LONCAPA_INTERNAL_no_discussion' => 'true', + 'symb' => $symb); + if (($env{'form.grade_target'} eq 'tex') || + ($env{'form.answer_output_mode'} eq 'tex')) { + $posthash{'grade_target'}=$env{'form.grade_target'}; + $posthash{'textwidth'}=$env{'form.textwidth'}; + $posthash{'problem_split'}=$env{'form.problem_split'}; + $posthash{'latex_type'}=$env{'form.latex_type'}; + $posthash{'rndseed'}=$env{'form.rndseed'}; + $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'}; } + my $submitted=exists($env{'form.all_submit'}); + if (!$submitted) { + foreach my $key (keys(%env)) { + if ($key=~/^form.\Q$prefix\Esubmit_/) { + $submitted=1;last; + } + } + } + if ($submitted) { + foreach my $key (keys(%env)) { + if ($key=~/^form.\Q$prefix\E/) { + my $name=$key; + $name=~s/^form.\Q$prefix\E//; + $posthash{$name}=$env{$key}; + } + } + if (exists($env{'form.all_submit'})) { + $posthash{'all_submit'}='yes'; + } + } + if ($env{'environment.remote'} eq 'on') { + $posthash{'inhibitmenu'} = 'yes'; + } my $output=Apache::lonnet::ssi($src,%posthash); + $output=~s|//(\s*)?\s||gs; + if (($target eq 'tex') || ($target eq 'tex_answer')) { + $output =~ s/^([^&]+)\\begin\{document}//; + $output =~ s/\\end\{document}//; +# $output = '\parbox{\minipagewidth}{ '.$output.' }'; + #some additional cleanup necessary for LateX (due to limitations of table environment + $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g; + } + my $matheditor; + if ($output =~ /\Qjavascript:LC_mathedit_HWVAL_\E/) { + $matheditor = 'dragmath'; + } elsif ($output =~ /LCmathField/) { + $matheditor = 'lcmath'; + } my $parser=HTML::TokeParser->new(\$output); my $token; + my $thisdir=$src; my $bodydef=0; my $thisxml=0; + my @rlinks=(); if ($output=~/\?xml/) { $isxml=1; $thisxml=1; @@ -195,9 +387,22 @@ sub handler { /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\]*\>/si; $xmlheader=$1; } - while (($bodydef==0) && - ($token=$parser->get_token)) { - if ($token->[1] eq 'body') { + while ($token=$parser->get_token) { + if ($token->[0] eq 'S') { + if ($token->[1] eq 'a') { + if ($token->[2]->{'href'}) { + $rlinks[$#rlinks+1]= + $token->[2]->{'href'}; + } + } elsif ($token->[1] eq 'img') { + $rlinks[$#rlinks+1]= + $token->[2]->{'src'}; + } elsif ($token->[1] eq 'embed') { + $rlinks[$#rlinks+1]= + $token->[2]->{'src'}; + } elsif ($token->[1] eq 'base') { + $thisdir=$token->[2]->{'href'}; + } elsif ($token->[1] eq 'body') { $bodydef=1; $ssibgcolor{$_}=$token->[2]->{'bgcolor'}; $ssitext{$_}=$token->[2]->{'text'}; @@ -207,119 +412,454 @@ sub handler { if ($thisxml) { $xmlbody=$token->[4]; } - } - if ($token->[1] eq 'meta') { + } elsif ($token->[1] eq 'meta') { + if ($token->[4] !~ m:/>$:) { $allmeta.="\n".$token->[4].''; - } - if ($token->[1] eq 'script') { + } else { + $allmeta.="\n".$token->[4]; + } + } elsif (($token->[1] eq 'script') && + ($bodydef==0)) { $allscript.="\n\n" .$parser->get_text('/script'); } - } + } + } if ($output=~/\]*\>(.*)/si) { $output=$1; } $output=~s/\<\/body\>.*//si; if ($output=~/\
]*\>//gsi; $output=~s/\<\/form[^\>]*\>//gsi; + if ($output=~/\]+name\s*=\s*[\'\"]*HWFILE/) { + $nuploads++; + } + if ($output=~/\]+name\s*=\s*[\'\"]*accessbutton/) { + $ntimers++; + $hastimer = 1; + } + $output=~ + s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi; + $output=~ + s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi; + $output=~ + s/(\Qthis.form.elements['\E)(HW(?:VAL|CHK)_[^']+\'\]\.(?:value=\'|checked))/$1$prefix$2/gsi; + if ($hastimer) { + $output=~ + s/\<(input[^\>]+name=\Q"$prefix\Eaccessbutton"[^\>]+)(?:\Qdocument.markaccess.submit();\E)([^\>]*)\>/\<$1pageTimer(this.form,'$prefix')$2\>/gsi; + $output=~ s/\<(input[^\>]+name=\Q"$prefix\Emarkaccess"[^\>]+value=["'])(?:yes)(['"][^\>]*)\>/\<$1$2\>/gsi; + } + if ($matheditor eq 'dragmath') { + $output=~ + s/(\Qjavascript:LC_mathedit_\E)(HWVAL_)([^'"]+?)(\(['"]*)(\QHWVAL_\E\3['"]\)\;void\(0\)\;)/$1$idprefix$2$3$4$idprefix$5/g; + $output=~ + s/(function\s+LC_mathedit_)(HWVAL_)([^'"]+?)(\s+\(LCtextline\))/$1$idprefix$2$3$4/g; + } elsif ($matheditor eq 'lcmath') { + $output=~ + s/(var\s+LCmathField\s+=\s+document\.getElementById\(['"])([^'"]+?)(['"]\)\;)/$1$idprefix$2$3/g; + } + $output=~ + s/(\Q