File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.141:
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Tue Sep 13 12:22:15 2022 UTC (2 years, 8 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- In course context, switch server to resource's home server opens new tab
when editing published resource, and ca role is loaded, when user's domain
(by default) disallows session hosting of domain's users in resource's domain.
- New arg (skip_enc_check) in redirect args , used by loncommon::headtag()
it true, omit application of check_encrypt().
- New seventh item ($shownsymb) in args for lonhtmlcommon::jump_to_editres()
# The LearningOnline Network with CAPA
# Page Handler
#
# $Id: lonpage.pm,v 1.141 2022/09/13 12:22:15 raeburn Exp $
#
# 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::loncommon();
use Apache::lonhtmlcommon;
use Apache::lonxml();
use Apache::lonlocal;
use Apache::lonmenu;
use Apache::lonhomework;
use Apache::lonparmset;
use Apache::lonenc();
use HTML::TokeParser;
use HTML::Entities();
use GDBM_File;
use Apache::lonsequence;
use lib '/home/httpd/lib/perl/';
use LONCAPA;
# -------------------------------------------------------------- Module Globals
my %hash;
my @rows;
# ------------------------------------------------------------------ Euclid gcd
sub euclid {
my ($e,$f)=@_;
my $a; my $b; my $r;
if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
while ($r!=0) {
$a=$b; $b=$r;
$r=$a%$b;
}
return $b;
}
# ------------------------------------------------------------ Build page table
sub tracetable {
my ($sofar,$rid,$beenhere)=@_;
my $further=$sofar;
my $randomout=0;
unless ($env{'request.role.adv'}) {
$randomout = $hash{'randomout_'.$rid};
}
unless ($beenhere=~/\&$rid\&/) {
$beenhere.=$rid.'&';
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_'.$rid}) {
my ($mapid,$resid)=split(/\./,$rid);
my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid});
my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid},$symb);
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;
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
# ------------------------------------------- Set document type for header only
if ($r->header_only) {
if ($env{'browser.mathml'}) {
&Apache::loncommon::content_type($r,'text/xml');
} else {
&Apache::loncommon::content_type($r,'text/html');
}
$r->send_http_header;
return OK;
}
&Apache::loncommon::get_unprocessed_cgi($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'}) && (!$env{'form.forceselect'})) {
my $fn=$env{'request.course.fn'};
if (-e "$fn.db") {
my %buttonshide;
my $hostname = $r->hostname();
my $lonhost = $r->dir_config('lonHostID');
my $ip = &Apache::lonnet::get_host_ip($lonhost);
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,'&');
# ------------------------------------------------------------ Add to symb list
my $i;
my %symbhash=();
for ($i=0;$i<=$#rows;$i++) {
if ($rows[$i]) {
my @colcont=split(/\&/,$rows[$i]);
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);
# ------------------------------------------------------------------ Page parms
my $j;
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=();
my %ssitext=();
my %ssilink=();
my %ssivlink=();
my %ssialink=();
my %cssrefs=();
my %httpref=();
my %cellemb=();
my %cellexternal=();
my $allscript='';
my $allmeta='';
my $isxml=0;
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;$i++) {
if ($rows[$i]) {
$contents++;
my @colcont=split(/\&/,$rows[$i]);
$lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
foreach (@colcont) {
my $src=$hash{'src_'.$_};
my $plainsrc = $src;
my $anchor;
if ($hash{'ext_'.$_} eq 'true:') {
$cellexternal{$_}=($hash{'ext_'.$_} eq 'true:');
$src =~ s{^/ext/}{http://};
$src =~ s{http://https://}{https://};
if ($src =~ /(\#[^#]+)$/) {
$anchor = $1;
$src =~ s/\#[^#]+$//;
}
}
my $unencsrc = $src;
my ($extension)=($src=~/\.(\w+)$/);
if ($hash{'encrypted_'.$_}) {
$src=&Apache::lonenc::encrypted($src);
}
my ($mapid,$resid)=split(/\./,$_);
my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$plainsrc);
unless ($env{'request.role.adv'}) {
$buttonshide{$symb} = &Apache::lonnet::EXT("resource.0.buttonshide",$symb);
}
$cellemb{$_}=
&Apache::loncommon::fileembstyle($extension);
if ($cellexternal{$_}) {
if (($target eq 'tex') || ($target eq 'tex_answer')) {
my $shown = $src.$anchor;
if (($hash{'encrypted_'.$_}) && (!$env{'request.role.adv'})) {
$shown = &mt('URL not shown (encrypted)');
}
my $title=&Apache::lonnet::gettitle($symb);
$title = &Apache::lonxml::latex_special_symbols($title);
$shown = &Apache::lonxml::latex_special_symbols($shown);
$ssibody{$_} = ' \strut \\\\ \textit{'.$title.'} \strut \\\\ '.$shown.'\\\\';
} else {
my $showsrc = $src;
my ($is_pdf,$title,$linktext);
if ($unencsrc =~ /\.pdf$/i) {
$is_pdf = 1;
}
if (($hash{'encrypted_'.$_}) && ($symb)) {
$title=&Apache::lonnet::gettitle(&Apache::lonenc::encrypted($symb));
} else {
$title=&Apache::lonnet::gettitle($symb);
}
if ($env{'browser.mobile'}) {
if ($is_pdf) {
$linktext = &mt('Link to PDF (for mobile devices)');
$ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
} else {
$linktext = &mt('Link to resource');
$ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
}
} else {
my $absolute = $env{'request.use_absolute'};
my $uselink = &Apache::loncommon::is_nonframeable($unencsrc,$absolute,$hostname,$ip);
if (($uselink) || (($ENV{'SERVER_PORT'} == 443) && ($unencsrc =~ m{^http://}))) {
$linktext = &mt('Link to resource');
$ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
} else {
if (($hash{'encrypted_'.$_}) && ($symb) && (!$env{'request.role.adv'})) {
$showsrc .= '?symb='.&Apache::lonenc::encrypted($symb);
} elsif ($anchor) {
$showsrc .= $anchor;
}
$ssibody{$_} = <<ENDEXT;
<iframe src="$showsrc" width="100%" height="300px">No iframe support!</iframe>
ENDEXT
}
}
}
} elsif ($cellemb{$_} eq 'ssi') {
# --------------------------------------------------------- This is an SSI cell
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 $submitted=$env{'form.all_submit_pressed'};
if (!$submitted) {
foreach my $key (keys(%env)) {
if ($key=~/^\Qform.$prefix\Esubmit_(.+)_pressed$/) {
if ($env{$key}) {
$submitted=1;
last;
}
}
}
}
if ($submitted) {
foreach my $key (keys(%env)) {
if ($key=~/^\Qform.$prefix\E/) {
my $name=$key;
$name=~s/^\Qform.$prefix\E//;
$posthash{$name}=$env{$key};
}
}
if ($env{'form.all_submit_pressed'}) {
$posthash{'all_submit'}='yes';
}
} elsif ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
$posthash{'markaccess'} = $env{'form.'.$prefix.'markaccess'};
}
my $output=Apache::lonnet::ssi($src,%posthash);
$output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
if (($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 $thisxml=0;
my @rlinks=();
my @css_hrefs=();
if ($output=~/\?xml/) {
$isxml=1;
$thisxml=1;
$output=~
/((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
$xmlheader=$1;
}
while ($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'};
$ssilink{$_}=$token->[2]->{'link'};
$ssivlink{$_}=$token->[2]->{'vlink'};
$ssialink{$_}=$token->[2]->{'alink'};
if ($thisxml) {
$xmlbody=$token->[4];
}
} elsif ($token->[1] eq 'meta') {
if ($token->[4] !~ m:/>$:) {
$allmeta.="\n".$token->[4].'</meta>';
} else {
$allmeta.="\n".$token->[4];
}
} elsif (($token->[1] eq 'script') &&
($bodydef==0)) {
$allscript.="\n\n"
.$parser->get_text('/script');
} elsif (($token->[1] eq 'link') &&
($bodydef==0)) {
if (($token->[2]->{'href'} !~ m{^/adm/}) &&
($token->[2]->{'rel'} eq 'stylesheet')) {
$css_hrefs[$#css_hrefs+1]=
$token->[2]->{'href'};
}
}
}
}
if ($output=~/\<body[^\>]*\>(.*)/si) {
$output=$1;
}
$output=~s/\<\/body\>.*//si;
if ($output=~/\<form/si) {
my $hastimer;
$nforms++;
$output=~s/\<form[^\>]*\>//gsi;
$output=~s/\<\/form[^\>]*\>//gsi;
if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
$nuploads++;
}
if ($output=~/\<input[^\>]+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;
}
$output=~
s/(\Q<div id="msg_\E)(\Qsubmit_\E)([^"]*)(\Q" style="display:none">\E)/<input type="hidden" name="$prefix$2$3_pressed" id="$idprefix$2$3_pressed" value="" \/>$1$idprefix$2$3$4/g;
$output=~
s/(\Q<td class="LC_status_\E)(\Qsubmit_\E)([^\"]*)(\s*[^\"]*"\>)/$1$idprefix$2$3$4/g;
if ($nuploads) {
($turninpaths{$prefix},$multiresps{$prefix}) =
&Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
if ($turninparent eq '') {
$turninparent = $turninpaths{$prefix};
$turninparent =~ s{(/[^/]+)$}{};
}
}
$output=~
s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
$output=~
s/\<(input[^\>]+\Qonfocus=\"javascript:disableAutoComplete\E)\(\'([^\']+)\'\)(;\")/\<$1('$idprefix$2')$3/gsi;
unless ($hastimer) {
if ($plainsrc =~ /$LONCAPA::assess_re/) {
%Apache::lonhomework::history =
&Apache::lonnet::restore($symb,$courseid,$domain,$name);
my $type = 'problem';
if ($extension eq 'task') {
$type = 'Task';
}
my ($status,$accessmsg,$slot_name,$slot) =
&Apache::lonhomework::check_slot_access('0',$type,$symb);
undef(%Apache::lonhomework::history);
my $probstatus = &Apache::lonnet::EXT("resource.0.problemstatus",$symb);
if (($status eq 'CAN_ANSWER') || (($status eq 'CANNOT_ANSWER') &&
(($probstatus eq 'no') || ($probstatus eq 'no_feedback_ever'))) ||
(($status eq 'NOT_YET_VIEWED') && ($posthash{'markaccess'} eq 'yes'))) {
my ($slothastime,$timerhastime);
if ($slot_name ne '') {
if (ref($slot) eq 'HASH') {
if (($slot->{'starttime'} < $now) &&
($slot->{'endtime'} > $now)) {
$slothastime = $now - $slot->{'endtime'};
}
}
}
my $duedate = &Apache::lonnet::EXT("resource.0.duedate",$symb);
my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
if (@interval > 1) {
my $first_access;
if ($interval[1] eq 'map') {
my $ignorecache;
if ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
$ignorecache = 1;
}
$first_access=&Apache::lonnet::get_first_access($interval[1],undef,$pagesymb,$ignorecache);
if (($first_access) && (!$pagefirstaccess)) {
$pagefirstaccess = $first_access;
}
} else {
$first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
}
if ($first_access > 0) {
my ($timelimit) = ($interval[0] =~ /^(\d+)/);
if ($timelimit) {
my $timeremains = $timelimit + $first_access - $now;
if ($timeremains > 0) {
$timerhastime = $timeremains;
}
}
}
}
if (($duedate && $duedate > $now) ||
(!$duedate && $timerhastime > 0) ||
($slot_name ne '' && $slothastime)) {
if ((@interval > 1 && $timerhastime) ||
($type eq 'Task' && $slothastime)) {
$countdowndisp{$symb} = 'inline';
if ((@interval > 1) && ($timerhastime)) {
$hastimeleft{$symb} = $timerhastime;
if ($pagefirstaccess) {
my ($timelimit,$usesdone,$donebuttontext,$proctor,$secret);
($timelimit,my $donesuffix) = split(/_/,$interval[0],2);
if ($donesuffix =~ /^done\:([^\:]+)\:(.*)$/) {
$usesdone = 'done';
$donebuttontext = $1;
(undef,$proctor,$secret) = split(/_/,$2);
} elsif ($donesuffix =~ /^done(|_.+)$/) {
$donebuttontext = &mt('Done');
($usesdone,$proctor,$secret) = split(/_/,$donesuffix);
}
if ($usesdone eq 'done') {
$donebutton{$symb} = $timelimit;
push(@{$buttonbytime{$timelimit}},$symb);
$donebtnextra{$symb} = {
text => $donebuttontext,
proctor => $proctor,
secret => $secret,
type => $interval[1],
};
}
}
} else {
$hastimeleft{$symb} = $slothastime;
}
} else {
$hastimeleft{$symb} = $duedate - $now;
$countdowndisp{$symb} = 'none';
}
unless ($donebutton{$symb}) {
$donebutton{$symb} = 0;
}
}
}
}
}
}
$thisdir=~s/\/[^\/]*$//;
foreach (@rlinks) {
unless (($_=~/^https?\:\/\//i) ||
($_=~/^\//) ||
($_=~/^javascript:/i) ||
($_=~/^mailto:/i) ||
($_=~/^\#/)) {
my $newlocation=
&Apache::lonnet::hreflocation($thisdir,$_);
$output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
}
}
foreach my $css_href (@css_hrefs) {
next if ($css_href eq '');
unless ($css_href =~ m{https?://}) {
my $proburl = &Apache::lonnet::clutter($plainsrc);
unless ($css_href =~ m{^/}) {
my $probdir = $proburl;
$probdir=~s/\/[^\/]*$//;
$css_href = &Apache::lonnet::hreflocation($probdir,$css_href);
}
if ($css_href =~ m{^/(res|uploaded)/}) {
unless (($env{'httpref.'.$css_href}) ||
($httpref{'httpref.'.$css_href}) ||
(&Apache::lonnet::is_on_map($css_href))) {
if ($env{'httpref.'.$proburl}) {
$proburl = $env{'httpref.'.$proburl};
}
$httpref{'httpref.'.$css_href} = $proburl;
}
}
}
$cssrefs{$css_href} = 1;
}
# -------------------------------------------------- Deal with Applet codebases
$output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
$ssibody{$_}=$output;
# ---------------------------------------------------------------- End SSI cell
}
}
}
}
unless ($contents) {
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
$r->print(&Apache::loncommon::start_page(undef,undef,
{'force_register' => 1,}));
$r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
$r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
&Apache::loncommon::end_page());
} else {
# ------------------------------------------------------------------ Build page
# ---------------------------------------------------------------- Send headers
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
if ($isxml) {
&Apache::loncommon::content_type($r,'text/xml');
} else {
&Apache::loncommon::content_type($r,'text/html');
}
$r->send_http_header;
# ------------------------------------------------------------------------ Head
if ($allscript) {
$allscript =
"\n".'<script type="text/javascript">'."\n".
$allscript.
"\n</script>\n";
}
if (($nforms) && ($nuploads)) {
$allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps).
'<script type="text/javascript" '.
'src="/res/adm/includes/file_upload.js"></script>';
}
if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) {
my %textarea_args = (
dragmath => 'math',
);
$allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
}
if ($ntimers) {
$allscript .= '<script type="text/javascript">'."\n".
'// <![CDATA['."\n".
'function pageTimer(form,prefix) {'."\n".
" form.elements[prefix+'markaccess'].value = 'yes';\n".
" form.submit();\n".
'}'."\n".
'// ]]>'.
"\n</script>\n";
}
&Apache::lonhtmlcommon::clear_breadcrumb_tools();
if (keys(%hastimeleft)) {
my (%uniquetimes,%uniquedisplays);
foreach my $item (values(%hastimeleft)) {
if (exists($uniquetimes{$item})) {
$uniquetimes{$item} ++;
} else {
$uniquetimes{$item} = 1;
}
}
if (scalar(keys(%uniquetimes)) == 1) {
my (%uniquedisplays,%uniquedones,$currdisp,$donebuttontime,
$donebuttonextras);
if (keys(%countdowndisp)) {
foreach my $item (values(%countdowndisp)) {
if (exists($uniquedisplays{$item})) {
$uniquedisplays{$item} ++;
} else {
$uniquedisplays{$item} = 1;
}
}
my @countdowndisplay = keys(%uniquedisplays);
if (scalar(@countdowndisplay) == 1) {
$currdisp = $countdowndisplay[0];
}
}
if (keys(%donebutton)) {
foreach my $item (values(%donebutton)) {
if (exists($uniquedones{$item})) {
$uniquedones{$item} ++;
} else {
$uniquedones{$item} = 1;
}
}
my @donebuttons = sort { $ <=> $b } (keys(%uniquedones));
if (scalar(@donebuttons) == 1) {
if ($donebuttons[0]) {
$donebuttontime = $donebuttons[0];
if (ref($buttonbytime{$donebuttontime}) eq 'ARRAY') {
$donebuttonextras = $donebtnextra{$buttonbytime{$donebuttontime}->[0]};
}
}
}
}
&add_countdown_timer($currdisp,$donebuttontime,$donebuttonextras);
}
}
my $pagebuttonshide;
if (keys(%buttonshide)) {
my %uniquebuttonhide;
foreach my $item (values(%buttonshide)) {
if (exists($uniquebuttonhide{$item})) {
$uniquebuttonhide{$item} ++;
} else {
$uniquebuttonhide{$item} = 1;
}
}
if (keys(%uniquebuttonhide) == 1) {
if (lc((keys(%uniquebuttonhide))[0]) eq 'yes') {
$pagebuttonshide = 'yes';
}
}
}
if (keys(%cssrefs)) {
my $links;
if (keys(%cssrefs)) {
foreach my $css_href (keys(%cssrefs)) {
next unless ($css_href =~ m{^(/res/|/uploaded/|https?://)});
$links .= '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />'."\n";
}
}
if ($links) {
if (keys(%httpref)) {
&Apache::lonnet::appenv(\%httpref);
}
$allscript .= "\n$links";
}
}
# ------------------------------------------------------------------ Start body
$r->print(&Apache::loncommon::start_page(undef,$allscript,
{'force_register' => 1,
'bgcolor' => '#ffffff',
'hide_buttons' => $pagebuttonshide}));
# ------------------------------------------------------------------ Start form
if ($nforms) {
my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
if ($nuploads) {
my $multi;
if ($nuploads > 1) {
$multi = 1;
}
$fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
}
$fmtag .= ' action="'.
&Apache::lonenc::check_encrypt($requrl)
.'" id="LC_page">';
$r->print($fmtag);
}
} elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
# I think this is not needed as the header
# will be put in for each of the page parts
# by the londefdef.pm now that we are opening up
# the parts of a page.
#$r->print('\documentclass{article}
# \newcommand{\keephidden}[1]{}
# \usepackage[dvips]{graphicx}
# \usepackage{epsfig}
# \usepackage{calc}
# \usepackage{longtable}
# \begin{document}');
}
# ----------------------------------------------------------------- Start table
if (($target eq 'tex') || ($target eq 'tex_answer')) {
# # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
} else {
$r->print('<table width="100%" cols="'.$lcm.'" border="0">');
}
# generate rows
for ($i=0;$i<=$#rows;$i++) {
if ($rows[$i]) {
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print("\n<tr>");
}
my @colcont=split(/\&/,$rows[$i]);
my $avespan=$lcm/($#colcont+1);
for ($j=0;$j<=$#colcont;$j++) {
my $rid=$colcont[$j];
my $metainfo =&get_buttons(\%hash,$rid,\%buttonshide,$hostname).'<br />';
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print('<td colspan="'.$avespan.'"');
}
if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
if ($ssibgcolor{$rid}) {
$r->print(' bgcolor="'.
$ssibgcolor{$rid}.'"');
}
$r->print('>'.$metainfo.'<font');
if ($ssitext{$rid}) {
$r->print(' text="'.$ssitext{$rid}.'"');
}
if ($ssilink{$rid}) {
$r->print(' link="'.$ssilink{$rid}.'"');
}
if ($ssitext{$rid}) {
$r->print(' vlink="'.$ssivlink{$rid}.'"');
}
if ($ssialink{$rid}) {
$r->print(' alink="'.$ssialink{$rid}.'"');
}
$r->print('>');
}
$r->print($ssibody{$rid});
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print('</font>');
}
if ($env{'course.'.
$env{'request.course.id'}.
'.pageseparators'} eq 'yes') {
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print('<hr />');
}
}
} elsif ($cellemb{$rid} eq 'img') {
$r->print('>'.$metainfo.'<img src="'.
$hash{'src_'.$rid}.'" />');
} elsif ($cellemb{$rid} eq 'emb') {
$r->print('>'.$metainfo.'<embed src="'.
$hash{'src_'.$rid}.'"></embed>');
} elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
$r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />');
unless ($cellemb{$rid} eq 'wrp') {
$r->print(&mt('It is recommended that you use an up-to-date virus scanner before handling this file.'));
}
$r->print('</p><p><table>'.
&Apache::londocs::entryline(0,
&mt("Click to download or use your browser's Save Link function"),
'/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).
'</table></p><br />');
}
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print('</td>');
} else {
# for (my $incol=1;$incol<=$avespan;$incol++) {
# $r->print(' & ');
# }
}
}
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print('</tr>');
} else {
# $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
}
}
}
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print("\n</table>");
} else {
# $r->print('\end{longtable}\strut');
}
# ---------------------------------------------------------------- Submit, etc.
if ($nforms) {
my $class;
if ($nforms > 1) {
$class = ' class="LC_hwk_submit"';
if ($ntimers) {
$nforms = 1;
$class = '';
}
}
$r->print(
'<input name="all_submit" value="'.&mt('Submit All').'" type="'.
(($nforms>1)?'submit':'hidden').'"'.$class.' id="all_submit" />'.
'<input type="hidden" name="all_submit_pressed" '.
'id="all_submit_pressed" value="" />'.
'<div id="msg_all_submit" style="display:none">'.
&mt('Processing your submission ...').'</div></form>');
}
unless (($target eq 'tex') || ($target eq 'tex_answer')) {
$r->print(&Apache::loncommon::end_page({'discussion'
=> 1,}));
} else {
$r->print('\end{document}'.$number_of_columns);
}
&Apache::lonnet::symblist($requrl,%symbhash);
my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
&Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
# -------------------------------------------------------------------- End page
}
# ------------------------------------------------------------- End render page
} else {
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
&Apache::lonsequence::viewmap($r,$requrl);
}
# ------------------------------------------------------------------ Untie hash
unless (untie(%hash)) {
&Apache::lonnet::logthis("<font color=blue>WARNING: ".
"Could not untie coursemap $fn (browse).</font>");
}
# -------------------------------------------------------------------- All done
return OK;
# ----------------------------------------------- Errors, hash could no be tied
}
}
}
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
&Apache::lonsequence::viewmap($r,$requrl);
return OK;
}
sub get_buttons {
my ($hash,$rid,$buttonshide,$hostname) = @_;
my ($mapid,$resid)=split(/\./,$rid);
my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
$resid,
$hash->{'src_'.$rid});
my ($aname,$shownsymb);
if (($hash->{'encrypted_'.$rid}) && (!$env{'request.role.adv'})) {
$aname = 'LC_'.$rid;
$shownsymb = &Apache::lonenc::encrypted($symb);
} else {
$shownsymb = $symb;
my $dispsymb = $symb;
if ($symb =~ /\#([^\#]+)$/) {
my $escan = &escape('#');
$dispsymb =~ s/#([^\#]+)$/$escan$1/;
}
$aname = &escape($dispsymb);
}
my $metainfo = '<a name="'.$aname.'"></a>';
unless ($env{'request.role.adv'}) {
if ($buttonshide->{$symb} eq 'yes') {
return $metainfo;
}
}
my $crs_sec = $env{'request.course.id'} . (($env{'request.course.sec'} ne '')
? "/$env{'request.course.sec'}"
: '');
my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
if ($hash->{'encrypted_'.$rid}) {
$esrc=&Apache::lonenc::encrypted($esrc);
}
if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
&& $hash->{'src_'.$rid} !~ m{^/ext/}
&& !$env{'request.enc'}
&& ($env{'request.role.adv'}
|| !$hash->{'encrypted_'.$rid})) {
$metainfo .= '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" '.
'target="LONcatInfo">'.
'<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
' alt="'.&mt('Show Metadata').'"'.
' title="'.&mt('Show Metadata').'" />'.
'</a>';
}
if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
($hash->{'src_'.$rid} !~ m{^/ext/})) {
$metainfo .= '<a href="/adm/evaluate?postdata='.
&escape($esrc).
'" target="LONcatInfo">'.
'<img src="/res/adm/pages/eval.png" class="LC_icon"'.
' alt="'.&mt('Provide my evaluation of this resource').'"'.
' title="'.&mt('Provide my evaluation of this resource').'" />'.
'</a>';
}
if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
if ((&Apache::lonnet::allowed('mgr',$crs_sec)) ||
(&Apache::lonnet::allowed('vgr',$crs_sec))) {
$metainfo.=
'<a href="/adm/grades?symb='.&escape($symb).
# '&command=submission" target="LONcatInfo">'.
'&command=submission">'.
'<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
'</a>';
}
if (&Apache::lonnet::allowed('mgr',$crs_sec)) {
$metainfo.=
'<a href="/adm/grades?symb='.&escape($symb).
# '&command=gradingmenu" target="LONcatInfo">'.
'&command=gradingmenu">'.
'<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
' alt="'.&mt('Content Grades').'"'.
' title="'.&mt('Content Grades').'" />'.
'</a>';
}
if ((&Apache::lonnet::allowed('opa',$crs_sec)) ||
(&Apache::lonnet::allowed('vpa',$crs_sec))) {
$metainfo.=
'<a href="/adm/parmset?symb='.&escape($symb).
# '" target="LONcatInfo">'.
'" >'.
'<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
' alt="'.&mt('Content Settings').'"'.
' title="'.&mt('Content Settings').'" />'.
'</a>';
}
}
if ($env{'request.course.id'}) {
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid});
my $editbutton = '';
if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
my ($cfile,$home,$switchserver,$forceedit,$forceview) =
&Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
if ($cfile ne '') {
my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
$forceedit,1,$symb,$shownsymb,
undef,&escape($env{'form.title'}),
$hostname);
if ($jscall) {
$editbutton = 1;
my $icon = 'pcstr.png';
my $label = &mt('Edit');
my $title = &mt('Edit this resource');
my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
$metainfo .= ' <a href="javascript:'.$jscall.';">'.$pic.'</a>';
}
}
}
if ((!$editbutton) && ($file=~/$LONCAPA::assess_re/)) {
my $url = &Apache::lonnet::clutter($file);
my $viewsrcbutton;
if ((&Apache::lonnet::allowed('cre','/')) &&
(&Apache::lonnet::metadata($url,'sourceavail') eq 'open')) {
$viewsrcbutton = 1;
} elsif (&Apache::lonnet::allowed('vxc',$crs_sec)) {
if ($url =~ m{^\Q/res/$cdom/\E($LONCAPA::match_username)/}) {
my $auname = $1;
if (($env{'request.course.adhocsrcaccess'} ne '') &&
(grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) {
$viewsrcbutton = 1;
} elsif ((&Apache::lonnet::metadata($url,'sourceavail') eq 'open') &&
(&Apache::lonnet::allowed('bre',$crs_sec))) {
$viewsrcbutton = 1;
}
}
}
if ($viewsrcbutton) {
my $icon = 'pcstr.png';
my $label = &mt('View Source');
my $title = &mt('View source code');
my $jsrid = $rid;
$jsrid =~ s/\./_/g;
my $showurl = &escape(&Apache::lonenc::check_encrypt($url));
my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
$metainfo .= ' <a href="javascript:open_source_'.$jsrid.'();">'.$pic.'</a>'."\n".
'<script type="text/javascript">'."\n".
"function open_source_$jsrid() {\n".
" sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename=$showurl','LONsource',".
"'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');\n".
"}\n".
"</script>\n";
}
}
}
return $metainfo;
}
sub add_countdown_timer {
my ($currdisp,$donebuttontime,$donebuttonextras) = @_;
my ($collapse,$expand,$alttxt,$title,$donebutton);
if ($currdisp eq 'inline') {
$collapse = '► ';
} else {
$expand = '◄ ';
}
if ($donebuttontime) {
my ($type,$proctor,$donebuttontext);
if (ref($donebuttonextras) eq 'HASH') {
$proctor = $donebuttonextras->{'proctor'};
$donebuttontext = $donebuttonextras->{'text'};
$type = $donebuttonextras->{'type'};
} else {
$donebuttontext = &mt('Done');
$type = 'map';
}
$donebutton =
&Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext);
}
unless ($env{'environment.icons'} eq 'iconsonly') {
$alttxt = &mt('Timer');
$title = $alttxt.' ';
}
my $desc = &mt('Countdown to due date/time');
my $output = <<END;
$donebutton
<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
<span id="ddcountcollapse" class="LC_menubuttons_inline_text">
$collapse
</span></a>
<span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
<span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
<img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
END
&Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output);
return;
}
sub create_extlink {
my ($url,$anchor,$title,$linktext) = @_;
my $shownlink;
unless ($title eq '') {
$shownlink = '<span style="font-weight:bold;">'.$title.'</span><br />';
}
my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
$shownlink .= '<a href="'.$dest.'">'.$linktext.'</a>';
return $shownlink;
}
1;
__END__
=head1 NAME
Apache::lonpage - Page Handler
=head1 SYNOPSIS
Invoked by /etc/httpd/conf/srm.conf:
<LocationMatch "^/res/.*\.page$>
SetHandler perl-script
PerlHandler Apache::lonpage
</LocationMatch>
=head1 INTRODUCTION
This module renders a .page resource.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 HANDLER SUBROUTINE
This routine is called by Apache and mod_perl.
=over 4
=item *
set document type for header only
=item *
tie db file
=item *
render page
=item *
add to symb list
=item *
page parms
=item *
Get SSI output, post parameters
=item *
SSI cell rendering
=item *
Deal with Applet codebases
=item *
Build page
=item *
send headers
=item *
start body
=item *
start form
=item *
start table
=item *
submit element, etc, render page, untie hash
=back
=head1 OTHER SUBROUTINES
=over 4
=item *
euclid() : Euclid's method for determining the greatest common denominator.
=item *
tracetable() : Build page table.
=back
=cut
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