--- loncom/xml/lonxml.pm 2004/10/21 02:43:34 1.346
+++ loncom/xml/lonxml.pm 2005/03/01 03:21:58 1.360
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# XML Parser Module
#
-# $Id: lonxml.pm,v 1.346 2004/10/21 02:43:34 albertel Exp $
+# $Id: lonxml.pm,v 1.360 2005/03/01 03:21:58 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -149,20 +149,25 @@ $Apache::lonxml::post_evaluate=1;
$Apache::lonxml::warnings_error_header='';
sub xmlbegin {
- my $output='';
- @htmlareafields=();
- if ($ENV{'browser.mathml'}) {
- $output='<?xml version="1.0"?>'
- .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
- .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
- .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
+ my ($style)=@_;
+ my $output='';
+ @htmlareafields=();
+ if ($ENV{'browser.mathml'}) {
+ $output='<?xml version="1.0"?>'
+ #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
+# .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
+
+# .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
+ .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
.'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
- .'xmlns="http://www.w3.org/TR/REC-html40">';
- } else {
- $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>';
- }
- return $output;
+ .'xmlns="http://www.w3.org/1999/xhtml">';
+ } else {
+ $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
+ }
+ if ($style eq 'encode') {
+ $output=&HTML::Entities::encode($output,'<>&"');
+ }
+ return $output;
}
sub xmlend {
@@ -179,7 +184,7 @@ sub xmlend {
&Apache::lonxml::newparser($parser,\$discussion,'');
return '';
} else {
- return $discussion.'</html>';
+ return $discussion.&Apache::loncommon::endbodytag();
}
}
@@ -284,7 +289,7 @@ sub printtokenheader {
}
}
-sub fontsettings() {
+sub fontsettings {
my $headerstring='';
if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
$headerstring.=
@@ -353,8 +358,8 @@ sub xmlparse {
my @stack = ();
my @parstack = ();
- &initdepth;
-
+ &initdepth();
+ &init_alarm();
my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
$safeeval,\%style_for_target);
@@ -368,23 +373,29 @@ sub xmlparse {
sub htmlclean {
my ($raw,$full)=@_;
+# Take care of CRLF etc
- my $tree = HTML::TreeBuilder->new;
- $tree->ignore_unknown(0);
-
- $tree->parse($raw);
-
- my $output= $tree->as_HTML(undef,' ');
-
- $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;
- $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;
+ $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs;
+ $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs;
+ $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs;
+ $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs;
+
+# Generate empty tags, remove wrong end tags
+ $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis;
+ $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis;
unless ($full) {
- $output=~s/\<[\/]*(body|head|html)\>//gis;
+ $raw=~s/\<[\/]*(body|head|html)\>//gis;
}
-
- $tree = $tree->delete;
-
- return $output;
+# Make standard tags lowercase
+ foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m',
+ 'table','tr','td','th','p','br','hr','img','embed','font',
+ 'a','strong','center','title','basefont','li','ol','ul',
+ 'input','select','form','option','script','pre') {
+ $raw=~s/\<$_\s*\>/\<$_\>/gis;
+ $raw=~s/\<\/$_\s*\>/<\/$_\>/gis;
+ $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis;
+ }
+ return $raw;
}
sub latex_special_symbols {
@@ -781,6 +792,28 @@ sub default_homework_load {
}
}
+{
+ my $alarm_depth;
+ sub init_alarm {
+ alarm(0);
+ $alarm_depth=0;
+ }
+
+ sub start_alarm {
+ if ($alarm_depth<1) {
+ my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
+ if ($old) {
+ &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
+ }
+ }
+ $alarm_depth++;
+ }
+
+ sub end_alarm {
+ $alarm_depth--;
+ if ($alarm_depth<1) { alarm(0); }
+ }
+}
my $metamode_was;
sub startredirection {
if (!$Apache::lonxml::redirection) {
@@ -1157,7 +1190,10 @@ sub inserteditinfo {
if ($filetype eq 'html') {
my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons();
$initialize=&Apache::lonhtmlcommon::htmlareaheaders().
- &Apache::lonhtmlcommon::spellheader().(<<FULLPAGE);
+ &Apache::lonhtmlcommon::spellheader();
+ if (!&Apache::lonhtmlcommon::htmlareablocked() &&
+ &Apache::lonhtmlcommon::htmlareabrowser()) {
+ $initialize.=(<<FULLPAGE);
<script type="text/javascript">
$addbuttons
@@ -1170,6 +1206,15 @@ $addbuttons
}
</script>
FULLPAGE
+ } else {
+ $initialize.=(<<FULLPAGE);
+<script type="text/javascript">
+$addbuttons
+ function initDocument() {
+ }
+</script>
+FULLPAGE
+ }
$result=~s/\<body([^\>]*)\>/\<body onload="initDocument()" $1\>/i;
$xml_help=&Apache::loncommon::helpLatexCheatsheet();
}
@@ -1249,6 +1294,8 @@ sub handler {
&Apache::loncommon::content_type($request,'text/html');
}
&Apache::loncommon::no_cache($request);
+ $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
+ 'lastrevisiondate'));
$request->send_http_header;
return OK if $request->header_only;
@@ -1326,7 +1373,11 @@ ENDNOTFOUND
if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) {
my $displayfile=$request->uri;
$displayfile=~s/^\/[^\/]*//;
- $result='<html><body bgcolor="#FFFFFF">'.
+ my $bodytag='<body bgcolor="#FFFFFF">';
+ if ($ENV{'environment.remote'} eq 'off') {
+ $bodytag=&Apache::loncommon::bodytag();
+ }
+ $result='<html>'.$bodytag.
&Apache::lonxml::message_location().'<h3>'.
$displayfile.
'</h3></body></html>';
@@ -1365,9 +1416,21 @@ sub debug {
}
}
+sub show_error_warn_msg {
+ if ($ENV{'request.filename'} eq '/home/httpd/html/res/lib/templates/simpleproblem.problem' &&
+ &Apache::lonnet::allowed('mdc',$ENV{'request.course.id'})) {
+ return 1;
+ }
+ return (($Apache::lonxml::debug eq 1) ||
+ ($ENV{'request.state'} eq 'construct') ||
+ ($Apache::lonhomework::browse eq 'F'
+ &&
+ $ENV{'form.show_errors'} eq 'on'));
+}
+
sub error {
$errorcount++;
- if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
+ if ( &show_error_warn_msg() ) {
# If printing in construction space, put the error inside <pre></pre>
push(@Apache::lonxml::error_messages,
$Apache::lonxml::warnings_error_header.
@@ -1407,7 +1470,7 @@ sub warning {
$warningcount++;
if ($ENV{'form.grade_target'} ne 'tex') {
- if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
+ if ( &show_error_warn_msg() ) {
my $request=$Apache::lonxml::request;
if (!$request) { $request=Apache->request; }
push(@Apache::lonxml::warning_messages,
@@ -1572,35 +1635,36 @@ sub whichuser {
my ($passedsymb)=@_;
my ($symb,$courseid,$domain,$name,$publicuser);
if (defined($ENV{'form.grade_symb'})) {
- my $tmp_courseid=$ENV{'form.grade_courseid'};
- my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
- if (!$allowed &&
- exists($ENV{'request.course.sec'}) &&
- $ENV{'request.course.sec'} !~ /^\s*$/) {
- $allowed=&Apache::lonnet::allowed('vgr',$ENV{'form.grade_courseid'}.
- '/'.$ENV{'request.course.sec'});
- }
- if ($allowed) {
- $symb=$ENV{'form.grade_symb'};
- $courseid=$ENV{'form.grade_courseid'};
- $domain=$ENV{'form.grade_domain'};
- $name=$ENV{'form.grade_username'};
- }
- } else {
- if (!$passedsymb) {
- $symb=&Apache::lonnet::symbread();
- } else {
- $symb=$passedsymb;
+ my ($tmp_courseid)=
+ &Apache::loncommon::get_env_multiple('form.grade_courseid');
+ my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
+ if (!$allowed &&
+ exists($ENV{'request.course.sec'}) &&
+ $ENV{'request.course.sec'} !~ /^\s*$/) {
+ $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
+ '/'.$ENV{'request.course.sec'});
}
- $courseid=$ENV{'request.course.id'};
- $domain=$ENV{'user.domain'};
- $name=$ENV{'user.name'};
- if ($name eq 'public' && $domain eq 'public') {
- if (!defined($ENV{'form.username'})) {
- $ENV{'form.username'}.=time.rand(10000000);
- }
- $name.=$ENV{'form.username'};
+ if ($allowed) {
+ ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
+ $courseid=$tmp_courseid;
+ ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
+ ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
+ return ($symb,$courseid,$domain,$name,$publicuser);
+ }
+ }
+ if (!$passedsymb) {
+ $symb=&Apache::lonnet::symbread();
+ } else {
+ $symb=$passedsymb;
+ }
+ $courseid=$ENV{'request.course.id'};
+ $domain=$ENV{'user.domain'};
+ $name=$ENV{'user.name'};
+ if ($name eq 'public' && $domain eq 'public') {
+ if (!defined($ENV{'form.username'})) {
+ $ENV{'form.username'}.=time.rand(10000000);
}
+ $name.=$ENV{'form.username'};
}
return ($symb,$courseid,$domain,$name,$publicuser);
}