# The LearningOnline Network
# Documents
#
# $Id: londocs.pm,v 1.47 2003/02/04 18:23:21 www 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::londocs;
use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonratedt;
use Apache::lonratsrv;
use Apache::lonxml;
use HTML::Entities;
use GDBM_File;
my $iconpath;
my %hash;
my $hashtied;
my %alreadyseen=();
my $hadchanges;
# Available help topics
my %help=();
# Mapread read maps into lonratedt::global arrays
# @order and @resources, determines status
# sets @order - pointer to resources in right order
# sets @resources - array with the resources with correct idx
#
sub mapread {
my ($coursenum,$coursedom,$map)=@_;
return
&Apache::lonratedt::mapread('/uploaded/'.$coursedom.'/'.$coursenum.'/'.
$map);
}
sub storemap {
my ($coursenum,$coursedom,$map)=@_;
$hadchanges=1;
return
&Apache::lonratedt::storemap('/uploaded/'.$coursedom.'/'.$coursenum.'/'.
$map,1);
}
sub editor {
my ($r,$coursenum,$coursedom,$folder,$allowed)=@_;
if ($ENV{'form.foldername'}) {
$r->print('
Folder: '.$ENV{'form.foldername'}.'
');
}
my $errtext='';
my $fatal=0;
($errtext,$fatal)=
&mapread($coursenum,$coursedom,$folder.'.sequence');
if ($#Apache::lonratedt::order<1) {
$Apache::lonratedt::order[0]=1;
$Apache::lonratedt::resources[1]='';
}
if ($fatal) {
$r->print('
'.$errtext.'
');
} else {
# ------------------------------------------------------------ Process commands
# ---------------- if they are for this folder and user allowed to make changes
if (($allowed) && ($ENV{'form.folder'} eq $folder)) {
# upload a file, if present
if (($ENV{'form.uploaddoc.filename'}) &&
($ENV{'form.cmd'}=~/^upload_(\w+)/)) {
if ($folder=~/^$1/) {
# this is for a course, not a user, so set coursedoc flag
# probably the only place in the system where this should be "1"
my $url=&Apache::lonnet::userfileupload('uploaddoc',1);
my $ext='false';
if ($url=~/^http\:\/\//) { $ext='true'; }
$url=~s/\:/\:/g;
my $comment=$ENV{'form.comment'};
$comment=~s/\\<\;/g;
$comment=~s/\>/\>\;/g;
$comment=~s/\:/\:/g;
if ($folder=~/^supplemental/) {
$comment=time.'___&&&___'.$ENV{'user.name'}.'___&&&___'.
$ENV{'user.domain'}.'___&&&___'.$comment;
}
my $newidx=$#Apache::lonratedt::resources+1;
$Apache::lonratedt::resources[$newidx]=
$comment.':'.$url.':'.$ext.':normal:res';
$Apache::lonratedt::order[$#Apache::lonratedt::order+1]=
$newidx;
&storemap($coursenum,$coursedom,$folder.'.sequence');
}
}
if ($ENV{'form.cmd'}) {
my ($cmd,$idx)=split(/\_/,$ENV{'form.cmd'});
if ($cmd eq 'del') {
for (my $i=$idx;$i<$#Apache::lonratedt::order;$i++) {
$Apache::lonratedt::order[$i]=
$Apache::lonratedt::order[$i+1];
}
$#Apache::lonratedt::order--;
} elsif ($cmd eq 'up') {
if (($idx) && (defined($Apache::lonratedt::order[$idx-1]))) {
my $i=$Apache::lonratedt::order[$idx-1];
$Apache::lonratedt::order[$idx-1]=
$Apache::lonratedt::order[$idx];
$Apache::lonratedt::order[$idx]=$i;
}
} elsif ($cmd eq 'down') {
if (defined($Apache::lonratedt::order[$idx+1])) {
my $i=$Apache::lonratedt::order[$idx+1];
$Apache::lonratedt::order[$idx+1]=
$Apache::lonratedt::order[$idx];
$Apache::lonratedt::order[$idx]=$i;
}
} elsif ($cmd eq 'rename') {
my ($rtitle,@rrest)=split(/\:/,
$Apache::lonratedt::resources[
$Apache::lonratedt::order[$idx]]);
my $comment=
&HTML::Entities::decode($ENV{'form.title'});
$comment=~s/\\<\;/g;
$comment=~s/\>/\>\;/g;
$comment=~s/\:/\:/g;
$Apache::lonratedt::resources[
$Apache::lonratedt::order[$idx]]=
$comment.':'.join(':',@rrest);
}
# Store the changed version
&storemap($coursenum,$coursedom,$folder.'.sequence');
}
# Group import/search
if ($ENV{'form.importdetail'}) {
foreach (split(/\&/,$ENV{'form.importdetail'})) {
if (defined($_)) {
my ($name,$url)=split(/\=/,$_);
$name=&Apache::lonnet::unescape($name);
$url=&Apache::lonnet::unescape($url);
if ($url) {
my $idx=$#Apache::lonratedt::resources+1;
$Apache::lonratedt::order
[$#Apache::lonratedt::order+1]=$idx;
my $ext='false';
if ($url=~/^http\:\/\//) { $ext='true'; }
$url=~s/\:/\:/g;
$name=~s/\:/\:/g;
$Apache::lonratedt::resources[$idx]=
$name.':'.$url.':'.$ext.':normal:res';
}
}
}
# Store the changed version
&storemap($coursenum,$coursedom,$folder.'.sequence');
}
}
# ---------------------------------------------------------------- End commands
# ---------------------------------------------------------------- Print screen
my $idx=0;
$r->print('
');
}
}
# --------------------------------------------------------------- An entry line
sub entryline {
my ($index,$title,$url,$folder,$allowed)=@_;
$title=~s/\&colon\;/\:/g;
$title=&HTML::Entities::encode(&HTML::Entities::decode(
&Apache::lonnet::unescape($title)),'\"\<\>\&\'');
my $renametitle=$title;
my $foldertitle=$title;
if ($title=~
/^(\d+)\_\_\_\&\;\&\;\&\;\_\_\_(\w+)\_\_\_\&\;\&\;\&\;\_\_\_(\w+)\_\_\_\&\;\&\;\&\;\_\_\_(.*)$/
) {
$foldertitle=&Apache::lontexconvert::msgtexconverted($4);
$renametitle=$4;
$title=''.localtime($1).' '.
&Apache::loncommon::plainname($2,$3).': '.
$foldertitle;
}
$renametitle=~s/\"\;/\\\"/g;
my $line='
END
}
# Figure out what kind of a resource this is
my ($extension)=($url=~/\.(\w+)$/);
my $uploaded=($url=~/^\/*uploaded\//);
my $icon='unknown';
if (-e "/home/httpd/html/adm/lonIcons/$extension.gif") {
$icon=$extension;
}
my $isfolder=0;
if ($uploaded) {
if ($extension eq 'sequence') {
$icon='folder_closed';
$url=~/\/(\w+)\.sequence/;
$url='/adm/coursedocs?folder='.$1;
$isfolder=1;
} else {
$url=&Apache::lonnet::tokenwrapper($url);
}
}
$url=~s/^http\&colon\;\/\//\/adm\/wrapper\/ext\//;
if ($isfolder) { $url.='&foldername='.$foldertitle; }
$line.='
";
return $line;
}
# ---------------------------------------------------------------- tie the hash
sub tiehash {
$hashtied=0;
if ($ENV{'request.course.fn'}) {
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
&GDBM_READER(),0640)) {
$hashtied=1;
}
}
}
sub untiehash {
if ($hashtied) { untie %hash; }
$hashtied=0;
}
# --------------------------------------------------------------- check on this
sub checkonthis {
my ($r,$url,$level,$title)=@_;
$alreadyseen{$url}=1;
$r->rflush();
if (($url) && ($url!~/^\/uploaded\//) && ($url!~/\*$/)) {
$r->print(' ');
for (my $i=0;$i<=$level*5;$i++) {
$r->print(' ');
}
$r->print(''.
($title?$title:$url).' ');
if ($url=~/^\/res\//) {
my $result=&Apache::lonnet::repcopy(
&Apache::lonnet::filelocation('',$url));
if ($result==OK) {
$r->print('ok');
$r->rflush();
&Apache::lonnet::countacc($url);
$url=~/\.(\w+)$/;
if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
$r->print(' ');
$r->rflush();
for (my $i=0;$i<=$level*5;$i++) {
$r->print(' ');
}
$r->print('- Rendering: ');
&Apache::lonxml::xmlparse($r,'web',
&Apache::lonnet::getfile(
&Apache::lonnet::filelocation('',$url)));
if (($Apache::lonxml::errorcount) ||
($Apache::lonxml::warningcount)) {
if ($Apache::lonxml::errorcount) {
$r->print(''.
$Apache::lonxml::errorcount.' error(s) ');
}
if ($Apache::lonxml::warningcount) {
$r->print(''.
$Apache::lonxml::warningcount.' warning(s)');
}
} else {
$r->print('ok');
}
$r->rflush();
}
my $dependencies=
&Apache::lonnet::metadata($url,'dependencies');
foreach (split(/\,/,$dependencies)) {
if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
&checkonthis($r,$_,$level+1);
}
}
} elsif ($result==HTTP_SERVICE_UNAVAILABLE) {
$r->print('connection down');
} elsif ($result==HTTP_NOT_FOUND) {
$r->print('not found');
} else {
$r->print('access denied');
}
}
}
}
# ================================================================ Main Handler
sub handler {
my $r = shift;
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# --------------------------------------------- Initialize help topics for this
foreach ('Adding_Course_Doc','Main_Course_Documents',
'Adding_External_Resource','Navigate_Content',
'Adding_Folders','Docs_Overview',
'Creating_From_Template','Supplemental',
'Importing_LON-CAPA_Resource','Uploading_From_Harddrive') {
$help{$_}=&Apache::loncommon::help_open_topic('Docs_'.$_);
}
if ($ENV{'form.verify'}) {
my $loaderror=&Apache::lonnet::overloaderror($r);
if ($loaderror) { return $loaderror; }
$r->print('Verify Content'.
&Apache::loncommon::bodytag('Verify Course Documents'));
$hashtied=0;
undef %alreadyseen;
%alreadyseen=();
&tiehash();
foreach (keys %hash) {
if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
&checkonthis($r,$hash{$_},0,$hash{'title_'.$1});
}
}
&untiehash();
} elsif ($ENV{'form.versions'}) {
$r->print('Check Versions'.
&Apache::loncommon::bodytag('Check Course Document Versions'));
$hashtied=0;
&tiehash();
my %changes=&Apache::lonnet::dump
('versionupdate',$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
$ENV{'course.'.$ENV{'request.course.id'}.'.num'});
my $firstkey=(keys %changes)[0];
unless ($firstkey=~/^error\:/) {
unless ($ENV{'form.timerange'}) {
$ENV{'form.timerange'}=604800;
}
my $seltext='during the last '.$ENV{'form.timerange'}.' seconds';
my $startsel='';
my $monthsel='';
my $weeksel='';
my $daysel='';
if ($ENV{'form.timerange'}==-1) {
$seltext='since start of course';
$startsel='selected';
$ENV{'form.timerange'}=time;
}
my $starttime=time-$ENV{'form.timerange'};
if ($ENV{'form.timerange'}==2592000) {
$seltext='during the last month ('.localtime($starttime).')';
$monthsel='selected';
} elsif ($ENV{'form.timerange'}==604800) {
$seltext='during the last week ('.localtime($starttime).')';
$weeksel='selected';
} elsif ($ENV{'form.timerange'}==86400) {
$seltext='since yesterday ('.localtime($starttime).')';
$daysel='selected';
}
$r->print(<
Content changed $seltext
File
Modification Date
Version
Differences
ENDHEADERS
foreach (keys %changes) {
if ($changes{$_}>$starttime) {
my ($root,$extension)=($_=~/^(.*)\.(\w+)$/);
my $currentversion=&Apache::lonnet::getversion($_);
my $linkurl=&Apache::lonnet::clutter($_);
$r->print(
'
');
my $lastold=1;
for (my $prevvers=1;$prevvers<$currentversion;$prevvers++) {
my $url=$root.'.'.$prevvers.'.'.$extension;
if (&Apache::lonnet::metadata($url,'lastrevisiondate')<
$starttime) {
$lastold=$prevvers;
}
}
for (my $prevvers=$lastold;$prevvers<$currentversion;$prevvers++) {
my $url=$root.'.'.$prevvers.'.'.$extension;
$r->print('Version '.$prevvers.' ('.
localtime(&Apache::lonnet::metadata($url,'lastrevisiondate')).
')');
if (&Apache::loncommon::fileembstyle($extension) eq 'ssi') {
$r->print(' Diffs');
}
$r->print(' ');
}
$r->print('
');
}
}
$r->print('
');
} else {
$r->print('
No content modifications yet.
');
}
&untiehash();
} else {
# is this a standard course?
my $standard=($ENV{'request.course.uri'}=~/^\/uploaded\//);
my $forcestandard;
my $forcesupplement;
my $script='';
my $allowed;
my $events='';
my $showdoc=0;
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['folder','foldername']);
if ($r->uri=~/^\/adm\/coursedocs\/showdoc\/(.*)$/) {
$showdoc=$1;
}
unless ($showdoc) { # got called from remote
$forcestandard=($ENV{'form.folder'}=~/^default_/);
$forcesupplement=($ENV{'form.folder'}=~/^supplemental_/);
# does this user have privileges to post, etc?
$allowed=&Apache::lonnet::allowed('srm',$ENV{'request.course.id'});
if ($allowed) {
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['cmd']);
$script=&Apache::lonratedt::editscript('simple');
}
} else { # got called in sequence from course
$allowed=0;
$script=''.&Apache::lonxml::registerurl(1,undef).'
ENDDOCUMENT
if ($allowed) {
$r->print(<
function makenewfolder(targetform,folderseq) {
var foldername=prompt('Name of New Folder','New Folder');
if (foldername) {
targetform.importdetail.value=foldername+"="+folderseq;
targetform.submit();
}
}
function makenewext(targetname) {
this.document.forms.extimport.useform.value=targetname;
window.open('/adm/rat/extpickframe.html');
}
function makesmppage() {
var title=prompt('Listed Title for the Page');
if (title) {
this.document.forms.newsmppg.importdetail.value=
title+'=/adm/$udom/$uname/$now/smppg';
this.document.forms.newsmppg.submit();
}
}
function makebulboard() {
var title=prompt('Listed Title for the Bulletin Board');
if (title) {
this.document.forms.newbul.importdetail.value=
title+'=/adm/$udom/$uname/$now/bulletinboard';
this.document.forms.newbul.submit();
}
}
function finishpick() {
var title=this.document.forms.extimport.title.value;
var url=this.document.forms.extimport.url.value;
var form=this.document.forms.extimport.useform.value;
eval
('this.document.forms.'+form+'.importdetail.value="'+title+'='+url+
'";this.document.forms.'+form+'.submit();');
}
function changename(folder,index,oldtitle) {
var title=prompt('New Title',oldtitle);
if (title) {
this.document.forms.renameform.title.value=title;
this.document.forms.renameform.cmd.value='rename_'+index;
this.document.forms.renameform.folder.value=folder;
this.document.forms.renameform.submit();
}
}
ENDNEWSCRIPT
}
# -------------------------------------------------------------------- Body tag
$r->print(''.
&Apache::loncommon::bodytag('Course Documents','',$events));
unless ($showdoc) {
if ($allowed) {
$r->print(&Apache::loncommon::help_open_topic('Docs_Adding_Course_Doc',
'Editing the Table of Contents for your Course'));
$r->print(<
ENDCOURSEVERIFY
}
# --------------------------------------------------------- Standard documents
$r->print('
');
if (($standard) && ($allowed) && (!$forcesupplement)) {
$r->print('
Main Course Documents'.
($allowed?' '.$help{'Main_Course_Documents'}:'').'
');
my $folder=$ENV{'form.folder'};
unless ($folder=~/^default/) { $folder='default'; }
$hadchanges=0;
&editor($r,$coursenum,$coursedom,$folder,$allowed);
if ($hadchanges) {
$r->print('');
}
my $folderseq='/uploaded/'.$coursedom.'/'.$coursenum.'/default_'.time.
'.sequence';
$r->print(<