version 1.5, 2000/09/15 20:03:48
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version 1.34, 2002/03/26 16:14:51
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Page Handler |
# Page Handler |
# |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# 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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# |
# (TeX Content Handler |
# (TeX Content Handler |
# |
# |
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# YEAR=2000 |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 08/30,08/31,09/06,09/14,09/15 Gerd Kortemeyer |
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
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# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16, |
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# YEAR=2001 |
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# 08/13/01,08/30,10/1 Gerd Kortemeyer |
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# 12/16 Scott Harrison |
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# YEAR=2002 |
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# 03/19 Gerd Kortemeyer |
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# |
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### |
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package Apache::lonpage; |
package Apache::lonpage; |
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use strict; |
use strict; |
use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
use Apache::lonnet(); |
use Apache::lonnet(); |
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use Apache::loncommon(); |
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use Apache::lonxml(); |
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use HTML::TokeParser; |
use GDBM_File; |
use GDBM_File; |
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# -------------------------------------------------------------- Module Globals |
# -------------------------------------------------------------- Module Globals |
my %hash; |
my %hash; |
my @rows; |
my @rows; |
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my %ssibody=(); |
# ------------------------------------------------------------------ Euclid gcd |
my %ssibgcolor=(); |
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my %ssitext=(); |
sub euclid { |
my %ssilink=(); |
my ($e,$f)=@_; |
my %ssivlink=(); |
my $a; my $b; my $r; |
my %ssialink=(); |
if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
my %cellemb=(); |
while ($r!=0) { |
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$a=$b; $b=$r; |
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$r=$a%$b; |
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} |
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return $b; |
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} |
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# ------------------------------------------------------------ Build page table |
# ------------------------------------------------------------ Build page table |
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Line 67 sub tracetable {
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Line 108 sub tracetable {
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} |
} |
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if (defined($hash{'to_'.$rid})) { |
if (defined($hash{'to_'.$rid})) { |
map { |
my $mincond=1; |
my $now=&tracetable($sofar,$hash{'goesto_'.$_},$beenhere); |
my $next=''; |
if ($now>$further) { $further=$now; } |
foreach (split(/\,/,$hash{'to_'.$rid})) { |
} split(/\,/,$hash{'to_'.$rid}); |
my $thiscond= |
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&Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}}); |
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if ($thiscond>=$mincond) { |
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if ($next) { |
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$next.=','.$_.':'.$thiscond; |
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} else { |
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$next=$_.':'.$thiscond; |
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} |
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if ($thiscond>$mincond) { $mincond=$thiscond; } |
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} |
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} |
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foreach (split(/\,/,$next)) { |
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my ($linkid,$condval)=split(/\:/,$_); |
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if ($condval>=$mincond) { |
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my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere); |
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if ($now>$further) { $further=$now; } |
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} |
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} |
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} |
} |
} |
} |
return $further; |
return $further; |
} |
} |
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sub cell { |
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my ($r,$colspan,$rid)=@_; |
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$r->print('<td colspan="'.$colspan.'"'); |
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if ($cellemb{$rid} eq 'ssi') { |
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$r->print('>'.$ssibody{$rid}); |
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} elsif ($cellemb{$rid} eq 'img') { |
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$r->print('><img src="'.$hash{'src_'.$rid}.'">'); |
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} |
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$r->print('</td>'); |
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} |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
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sub handler { |
sub handler { |
Line 109 sub handler {
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Line 157 sub handler {
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if ($ENV{'request.course.fn'}) { |
if ($ENV{'request.course.fn'}) { |
my $fn=$ENV{'request.course.fn'}; |
my $fn=$ENV{'request.course.fn'}; |
if (-e "$fn.db") { |
if (-e "$fn.db") { |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { |
# ------------------------------------------------------------------- Hash tied |
# ------------------------------------------------------------------- Hash tied |
my $firstres=$hash{'map_start_'.$requrl}; |
my $firstres=$hash{'map_start_'.$requrl}; |
my $lastres=$hash{'map_finish_'.$requrl}; |
my $lastres=$hash{'map_finish_'.$requrl}; |
Line 127 sub handler {
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Line 175 sub handler {
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} |
} |
} |
} |
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# ------------------------------------------------------------ Add to symb list |
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my $i; |
my $i; |
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my %symbhash=(); |
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for ($i=0;$i<=$#rows;$i++) { |
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if ($rows[$i]) { |
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my @colcont=split(/\&/,$rows[$i]); |
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foreach (@colcont) { |
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$symbhash{$hash{'src_'.$_}}=''; |
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} |
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} |
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} |
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&Apache::lonnet::symblist($requrl,%symbhash); |
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# ------------------------------------------------------------------ Page parms |
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my $j; |
my $j; |
my $maxcols=-1; |
my $lcm=1; |
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my $contents=0; |
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my $nforms=0; |
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my %ssibody=(); |
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my %ssibgcolor=(); |
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my %ssitext=(); |
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my %ssilink=(); |
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my %ssivlink=(); |
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my %ssialink=(); |
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my %metalink=(); |
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my %cellemb=(); |
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my $allscript=''; |
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my $allmeta=''; |
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my $isxml=0; |
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my $xmlheader=''; |
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my $xmlbody=''; |
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# --------------------------------------------- Get SSI output, post parameters |
# --------------------------------------------- Get SSI output, post parameters |
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for ($i=0;$i<=$#rows;$i++) { |
for ($i=0;$i<=$#rows;$i++) { |
if ($rows[$i]) { |
if ($rows[$i]) { |
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$contents++; |
my @colcont=split(/\&/,$rows[$i]); |
my @colcont=split(/\&/,$rows[$i]); |
$maxcols=$#colcont>$maxcols?$#colcont:$maxcols; |
$lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); |
map { |
foreach (@colcont) { |
my $src=$hash{'src_'.$_}; |
my $src=$hash{'src_'.$_}; |
$src=~/\.(\w+)$/; |
$src=~/\.(\w+)$/; |
$cellemb{$_}=Apache::lonnet::fileembstyle($1); |
$metalink{$_}=$src.'.meta'; |
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$cellemb{$_}=Apache::loncommon::fileembstyle($1); |
if ($cellemb{$_} eq 'ssi') { |
if ($cellemb{$_} eq 'ssi') { |
# --------------------------------------------------------- This is an SSI cell |
# --------------------------------------------------------- This is an SSI cell |
my $prefix=$_.'_'; |
my $prefix=$_.'_'; |
my %posthash=('request.prefix' => $prefix); |
my %posthash=('request.prefix' => $prefix); |
map { |
if (($ENV{'form.'.$prefix.'submit'}) |
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|| ($ENV{'form.all_submit'})) { |
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foreach (keys %ENV) { |
if ($_=~/^form.$prefix/) { |
if ($_=~/^form.$prefix/) { |
my $name=$_; |
my $name=$_; |
$name=~s/^form.$prefix//; |
$name=~s/^form.$prefix//; |
$posthash{$name}=$ENV{$_}; |
$posthash{$name}=$ENV{$_}; |
} |
} |
} keys %ENV; |
} |
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} |
my $output=Apache::lonnet::ssi($src,%posthash); |
my $output=Apache::lonnet::ssi($src,%posthash); |
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my $parser=HTML::TokeParser->new(\$output); |
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my $token; |
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my $thisdir=$src; |
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my $bodydef=0; |
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my $thisxml=0; |
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my @rlinks=(); |
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if ($output=~/\?xml/) { |
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$isxml=1; |
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$thisxml=1; |
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$output=~ |
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/((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si; |
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$xmlheader=$1; |
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} |
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while ($token=$parser->get_token) { |
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if ($token->[0] eq 'S') { |
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if ($token->[1] eq 'a') { |
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if ($token->[2]->{'href'}) { |
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$rlinks[$#rlinks+1]= |
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$token->[2]->{'href'}; |
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} |
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} elsif ($token->[1] eq 'img') { |
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$rlinks[$#rlinks+1]= |
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$token->[2]->{'src'}; |
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} elsif ($token->[1] eq 'embed') { |
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$rlinks[$#rlinks+1]= |
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$token->[2]->{'src'}; |
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} elsif ($token->[1] eq 'base') { |
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$thisdir=$token->[2]->{'href'}; |
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} elsif ($token->[1] eq 'body') { |
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$bodydef=1; |
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$ssibgcolor{$_}=$token->[2]->{'bgcolor'}; |
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$ssitext{$_}=$token->[2]->{'text'}; |
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$ssilink{$_}=$token->[2]->{'link'}; |
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$ssivlink{$_}=$token->[2]->{'vlink'}; |
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$ssialink{$_}=$token->[2]->{'alink'}; |
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if ($thisxml) { |
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$xmlbody=$token->[4]; |
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} |
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} elsif ($token->[1] eq 'meta') { |
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if ($token->[4] !~ m:/>$:) { |
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$allmeta.="\n".$token->[4].'</meta>'; |
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} else { |
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$allmeta.="\n".$token->[4]; |
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} |
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} elsif (($token->[1] eq 'script') && |
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($bodydef==0)) { |
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$allscript.="\n\n" |
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.$parser->get_text('/script'); |
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} |
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} |
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} |
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if ($output=~/\<body[^\>]*\>(.*)/si) { |
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$output=$1; |
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} |
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$output=~s/\<\/body\>.*//si; |
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if ($output=~/\<form/si) { |
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$nforms++; |
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$output=~s/\<form[^\>]*\>//gsi; |
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$output=~s/\<\/form[^\>]*\>//gsi; |
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$output=~ |
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s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([\w\.\:]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi; |
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} |
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$thisdir=~s/\/[^\/]*$//; |
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foreach (@rlinks) { |
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unless (($_=~/^http:\/\//i) || |
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($_=~/^\//) || |
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($_=~/^javascript:/i) || |
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($_=~/^mailto:/i) || |
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($_=~/^\#/)) { |
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my $newlocation= |
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&Apache::lonnet::hreflocation($thisdir,$_); |
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$output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/; |
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} |
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} |
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# -------------------------------------------------- Deal with Applet codebases |
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$output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei; |
$ssibody{$_}=$output; |
$ssibody{$_}=$output; |
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# ---------------------------------------------------------------- End SSI cell |
# ---------------------------------------------------------------- End SSI cell |
} |
} |
} @colcont; |
} |
} |
} |
} |
} |
if ($maxcols<0) { |
unless ($contents) { |
$r->content_type('text/html'); |
$r->content_type('text/html'); |
$r->send_http_header; |
$r->send_http_header; |
$r->print('<html><body>Empty page.</body></html>'); |
$r->print('<html><body>Empty page.</body></html>'); |
} else { |
} else { |
# ------------------------------------------------------------------ Build page |
# ------------------------------------------------------------------ Build page |
$maxcols++; |
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$r->content_type('text/html'); |
# ---------------------------------------------------------------- Send headers |
$r->send_http_header; |
if ($isxml) { |
$r->print('<html><body>'); |
$r->content_type('text/xml'); |
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$r->send_http_header; |
$r->print('<table cols="'.$maxcols.'" rows="'. |
$r->print($xmlheader); |
$#rows.'" border="0">'); |
} else { |
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$r->content_type('text/html'); |
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$r->send_http_header; |
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$r->print('<html>'); |
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} |
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# ------------------------------------------------------------------------ Head |
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$r->print("\n<head>\n".$allmeta); |
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$allscript=~ |
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s/\/\/ BEGIN LON\-CAPA Internal.+\/\/ END LON\-CAPA Internal\s//gs; |
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if ($allscript) { |
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$r->print("\n<script language='JavaScript'>\n". |
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$allscript."\n</script>\n"); |
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} |
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$r->print(&Apache::lonxml::registerurl(1,undef)); |
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$r->print("\n</head>\n"); |
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# ------------------------------------------------------------------ Start body |
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if ($isxml) { |
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$r->print($xmlbody); |
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} else { |
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$r->print( |
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'<body bgcolor="#FFFFFF" onLoad="'.&Apache::lonxml::loadevents. |
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'" onUnload="'.&Apache::lonxml::unloadevents.'">'); |
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} |
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# ------------------------------------------------------------------ Start form |
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if ($nforms) { |
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$r->print('<form method="post" action="'. |
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$requrl.'">'); |
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} |
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# ----------------------------------------------------------------- Start table |
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$r->print('<table cols="'.$lcm.'" border="0">'); |
for ($i=0;$i<=$#rows;$i++) { |
for ($i=0;$i<=$#rows;$i++) { |
if ($rows[$i]) { |
if ($rows[$i]) { |
$r->print("\n<tr>"); |
$r->print("\n<tr>"); |
my @colcont=split(/\&/,$rows[$i]); |
my @colcont=split(/\&/,$rows[$i]); |
my $avespan=int($maxcols/($#colcont+1)); |
my $avespan=$lcm/($#colcont+1); |
my $lastspan=$maxcols-$avespan*$#colcont; |
for ($j=0;$j<=$#colcont;$j++) { |
for ($j=0;$j<$#colcont;$j++) { |
my $rid=$colcont[$j]; |
&cell($r,$avespan,$colcont[$j]); |
my $metainfo='<a href="'. |
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$metalink{$rid}.'" target="LONcatInfo">'. |
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'<img src="/adm/lonMisc/cat_button.gif" border=0>'. |
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'</img></a><a href="/adm/evaluate?postdata='. |
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&Apache::lonnet::declutter($hash{'src_'.$rid}).'" target="LONcatInfo">'. |
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'<img src="/adm/lonMisc/eval_button.gif" border=0>'. |
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'</img></a>'; |
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if ( |
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($hash{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) && |
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(&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}))) { |
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my ($mapid,$resid)=split(/\./,$rid); |
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my $symb= |
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&Apache::lonnet::declutter($hash{'map_id_'.$mapid}). |
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'___'.$resid.'___'. |
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&Apache::lonnet::declutter($hash{'src_'.$rid}); |
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$metainfo.= |
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'<a href="/adm/grades?symb='.$symb. |
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'&command=submission" target="LONcatInfo">'. |
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'<img src="/adm/lonMisc/subm_button.gif" border=0>'. |
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'</img></a>'. |
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'<a href="/adm/grades?symb='.$symb. |
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'&command=viewgrades" target="LONcatInfo">'. |
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'<img src="/adm/lonMisc/pgrd_button.gif" border=0>'. |
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'</img></a>'. |
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'<a href="/adm/parmset?symb='.$symb.'" target="LONcatInfo">'. |
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'<img src="/adm/lonMisc/pprm_button.gif" border=0>'. |
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'</img></a>'; |
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} |
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$metainfo.='<br></br>'; |
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$r->print('<td colspan="'.$avespan.'"'); |
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if ($cellemb{$rid} eq 'ssi') { |
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if ($ssibgcolor{$rid}) { |
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$r->print(' bgcolor="'. |
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$ssibgcolor{$rid}.'"'); |
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} |
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$r->print('>'.$metainfo.'<font'); |
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if ($ssitext{$rid}) { |
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$r->print(' text="'.$ssitext{$rid}.'"'); |
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} |
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if ($ssilink{$rid}) { |
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$r->print(' link="'.$ssilink{$rid}.'"'); |
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} |
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if ($ssitext{$rid}) { |
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$r->print(' vlink="'.$ssivlink{$rid}.'"'); |
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} |
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if ($ssialink{$rid}) { |
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$r->print(' alink="'.$ssialink{$rid}.'"'); |
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} |
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$r->print('>'.$ssibody{$rid}.'</font>'); |
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} elsif ($cellemb{$rid} eq 'img') { |
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$r->print('>'.$metainfo.'<img src="'. |
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$hash{'src_'.$rid}.'"></img>'); |
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} elsif ($cellemb{$rid} eq 'emb') { |
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$r->print('>'.$metainfo.'<embed src="'. |
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$hash{'src_'.$rid}.'"></embed>'); |
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} |
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$r->print('</td>'); |
} |
} |
&cell($r,$lastspan,$colcont[$#colcont]); |
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$r->print('</tr>'); |
$r->print('</tr>'); |
} |
} |
} |
} |
$r->print("\n</table>"); |
$r->print("\n</table>"); |
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# ---------------------------------------------------------------- Submit, etc. |
$r->print('</body></html>'); |
if ($nforms) { |
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$r->print( |
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'<input name="all_submit" value="Submit All" type="'. |
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(($nforms>1)?'submit':'hidden').'"></input></form>'); |
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} |
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$r->print('</body>'.&Apache::lonxml::xmlend()); |
# -------------------------------------------------------------------- End page |
# -------------------------------------------------------------------- End page |
} |
} |
# ------------------------------------------------------------- End render page |
# ------------------------------------------------------------- End render page |
Line 209 sub handler {
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Line 461 sub handler {
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} |
} |
} |
} |
} |
} |
$ENV{'user.error.msg'}="$requrl:bre:1:1:Course not initialized"; |
$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
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1; |
1; |
__END__ |
__END__ |
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=head1 NAME |
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Apache::lonpage - Page Handler |
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=head1 SYNOPSIS |
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Invoked by /etc/httpd/conf/srm.conf: |
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<LocationMatch "^/res/.*\.page$> |
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SetHandler perl-script |
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PerlHandler Apache::lonpage |
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</LocationMatch> |
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=head1 INTRODUCTION |
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This module renders a .page resource. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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This routine is called by Apache and mod_perl. |
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=over 4 |
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=item * |
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set document type for header only |
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=item * |
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tie db file |
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=item * |
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render page |
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=item * |
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add to symb list |
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=item * |
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page parms |
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=item * |
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Get SSI output, post parameters |
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=item * |
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SSI cell rendering |
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=item * |
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Deal with Applet codebases |
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=item * |
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Build page |
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=item * |
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send headers |
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=item * |
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start body |
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=item * |
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start form |
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=item * |
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start table |
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=item * |
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submit element, etc, render page, untie hash |
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=back |
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=head1 OTHER SUBROUTINES |
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=over 4 |
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=item * |
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euclid() : Euclid's method for determining the greatest common denominator. |
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=item * |
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tracetable() : Build page table. |
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=back |
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=cut |
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