# The LearningOnline Network with CAPA
# Publication Handler
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 11/28,11/29,11/30 Gerd Kortemeyer
package Apache::lonpublisher;
use strict;
use Apache::File;
use Apache::Constants qw(:common :http :methods);
use HTML::TokeParser;
use Apache::lonxml;
use Apache::lonhomework;
my %addid;
my %nokey;
sub publish {
my ($source,$target,$style)=@_;
my $logfile;
my $scrout='';
unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
return 'No write permission to user directory, FAIL';
}
print $logfile
"\n\n================== Publish ".localtime()." =================\n";
if (($style eq 'ssi') || ($style eq 'rat')) {
# ------------------------------------------------------- This needs processing
# ----------------------------------------------------------------- Backup Copy
my $copyfile=$source.'.save';
{
my $org=Apache::File->new($source);
my $cop=Apache::File->new('>'.$copyfile);
while (my $line=<$org>) { print $cop $line; }
}
if (-e $copyfile) {
print $logfile "Copied original file to ".$copyfile."\n";
} else {
print $logfile "Unable to write backup ".$copyfile."\n";
return "Failed to write backup copy, FAIL";
}
# ------------------------------------------------------------- IDs and indices
my $maxindex=10;
my $maxid=10;
my $content='';
my $needsfixup=0;
{
my $org=Apache::File->new($source);
$content=join('',<$org>);
}
{
my $parser=HTML::TokeParser->new(\$content);
my $token;
while ($token=$parser->get_token) {
if ($token->[0] eq 'S') {
my $counter;
if ($counter=$addid{$token->[1]}) {
if ($counter eq 'id') {
if (defined($token->[2]->{'id'})) {
$maxid=
($token->[2]->{'id'}>$maxid)?$token->[2]->{'id'}:$maxid;
} else {
$needsfixup=1;
}
} else {
if (defined($token->[2]->{'index'})) {
$maxindex=
($token->[2]->{'index'}>$maxindex)?$token->[2]->{'index'}:$maxindex;
} else {
$needsfixup=1;
}
}
}
}
}
}
if ($needsfixup) {
print $logfile "Needs ID and/or index fixup\n".
"Max ID : $maxid (min 10)\n".
"Max Index: $maxindex (min 10)\n";
my $outstring='';
my $parser=HTML::TokeParser->new(\$content);
my $token;
while ($token=$parser->get_token) {
if ($token->[0] eq 'S') {
my $counter;
if ($counter=$addid{$token->[1]}) {
if ($counter eq 'id') {
if (defined($token->[2]->{'id'})) {
$outstring.=$token->[4];
} else {
$maxid++;
my $thisid=' id="'.$maxid.'"';
my $fixup=$token->[4];
$fixup=~s/(\<\w+)/$1$thisid/;
$outstring.=$fixup;
print $logfile 'ID: '.$fixup."\n";
}
} else {
if (defined($token->[2]->{'index'})) {
$outstring.=$token->[4];
} else {
$maxindex++;
my $thisindex=' index="'.$maxindex.'"';
my $fixup=$token->[4];
$fixup=~s/(\<\w+)/$1$thisindex/;
$outstring.=$fixup;
print $logfile 'Index: '.$fixup."\n";
}
}
} else {
$outstring.=$token->[4];
}
} elsif ($token->[0] eq 'E') {
$outstring.=$token->[2];
} else {
$outstring.=$token->[1];
}
}
{
my $org;
unless ($org=Apache::File->new('>'.$source)) {
print $logfile "No write permit to $source\n";
return "No write permission to $source, FAIL";
}
print $org $outstring;
}
$content=$outstring;
print $logfile "End of ID and/or index fixup\n".
"Max ID : $maxid (min 10)\n".
"Max Index: $maxindex (min 10)\n";
} else {
print $logfile "Does not need ID and/or index fixup\n";
}
# -------------------------------------------------- Parse content for metadata
my $allmeta='';
if ($source=~/\.problem$/) {
$allmeta=Apache::lonhomework::subhandler('meta',$content);
} else {
$allmeta=Apache::lonxml::xmlparse('meta',$content);
}
# DEBUG:
$scrout=$allmeta;
# --------------------------------------------------- Scan content for keywords
{
my $textonly=$content;
$textonly=~s/\<script[^\<]+\<\/script\>//g;
$textonly=~s/\<m\>[^\<]+\<\/m\>//g;
$textonly=~s/\<[^\>]*\>//g;
$textonly=~tr/A-Z/a-z/;
$textonly=~s/[\$\&][a-z]\w*//g;
$textonly=~s/[^a-z\s]//g;
my %keywords=();
map {
unless ($nokey{$_}) {
$keywords{$_}=1;
}
} ($textonly=~m/(\w+)/g);
# DEBUG:
$scrout.=join('<br>',sort keys %keywords);
}
}
return $scrout;
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
if ($r->header_only) {
$r->content_type('text/html');
$r->send_http_header;
return OK;
}
# -------------------------------------------------------------- Check filename
my $fn=$ENV{'form.filename'};
unless ($fn) {
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
' trying to publish empty filename', $r->filename);
return HTTP_NOT_FOUND;
}
unless ($ENV{'user.home'} eq $r->dir_config('lonHostID')) {
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
' trying to publish file '.$ENV{'form.filename'}.
' ('.$fn.') - not homeserver ('.$ENV{'user.home'}.')',
$r->filename);
return HTTP_NOT_ACCEPTABLE;
}
$fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
my $targetdir='';
my $docroot=$r->dir_config('lonDocRoot');
if ($1 ne $ENV{'user.name'}) {
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
' trying to publish unowned file '.$ENV{'form.filename'}.
' ('.$fn.')',
$r->filename);
return HTTP_NOT_ACCEPTABLE;
} else {
$targetdir=$docroot.'/res/'.$ENV{'user.domain'};
}
unless (-e $fn) {
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
' trying to publish non-existing file '.$ENV{'form.filename'}.
' ('.$fn.')',
$r->filename);
return HTTP_NOT_FOUND;
}
# --------------------------------- File is there and owned, init lookup tables
%addid=();
{
my $fh=Apache::File->new($r->dir_config('lonTabDir').'/addid.tab');
while (<$fh>=~/(\w+)\s+(\w+)/) {
$addid{$1}=$2;
}
}
%nokey=();
{
my $fh=Apache::File->new($r->dir_config('lonIncludes').'/un_keyword.tab');
map {
my $word=$_;
chomp($word);
$nokey{$word}=1;
} <$fh>;
}
# ----------------------------------------------------------- Start page output
$r->content_type('text/html');
$r->send_http_header;
$r->print('<html><head><title>LON-CAPA Publishing</title></head>');
$r->print('<body bgcolor="#FFFFFF">');
my $thisfn=$fn;
# ------------------------------------------------------------- Individual file
{
$thisfn=~/\.(\w+)$/;
my $thistype=$1;
my $thisembstyle=&Apache::lonnet::fileembstyle($thistype);
my $thistarget=$thisfn;
$thistarget=~s/^\/home/$targetdir/;
$thistarget=~s/\/public\_html//;
my $thisdistarget=$thistarget;
$thisdistarget=~s/^$docroot//;
my $thisdisfn=$thisfn;
$thisdisfn=~s/^\/home\/$ENV{'user.name'}\/public_html\///;
$r->print('<h2>Publishing '.
&Apache::lonnet::filedescription($thistype).' <tt>'.
$thisdisfn.'</tt></h2><b>Target:</b> <tt>'.$thisdistarget.'</tt><p>');
# ------------ We are publishing from $thisfn to $thistarget with $thisembstyle
$r->print('<b>Result:</b> '.&publish($thisfn,$thistarget,$thisembstyle));
}
$r->print('</body></html>');
return OK;
}
1;
__END__
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