--- loncom/xml/lonxml.pm 2004/11/29 22:45:51 1.347 +++ loncom/xml/lonxml.pm 2005/11/17 20:04:19 1.390 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.347 2004/11/29 22:45:51 albertel Exp $ +# $Id: lonxml.pm,v 1.390 2005/11/17 20:04:19 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -81,7 +81,7 @@ use Apache::languagetags(); use Apache::edit(); use Apache::inputtags(); use Apache::outputtags(); -use Apache::lonnet(); +use Apache::lonnet; use Apache::File(); use Apache::loncommon(); use Apache::lonfeedback(); @@ -149,37 +149,49 @@ $Apache::lonxml::post_evaluate=1; $Apache::lonxml::warnings_error_header=''; sub xmlbegin { - my $output=''; - @htmlareafields=(); - if ($ENV{'browser.mathml'}) { - $output='' - .'' - .']>' + my ($style)=@_; + my $output=''; + @htmlareafields=(); + if ($env{'browser.mathml'}) { + $output='' + #.''."\n" +# .'] >' + .'' .''; - } else { - $output=' -'; - } - return $output; + .'xmlns="http://www.w3.org/1999/xhtml">'; + } else { + $output=''; + } + if ($style eq 'encode') { + $output=&HTML::Entities::encode($output,'<>&"'); + } + return $output; } sub xmlend { my ($target,$parser)=@_; my $mode='xml'; my $status='OPEN'; - if ($Apache::lonhomework::parsing_a_problem) { + if ($Apache::lonhomework::parsing_a_problem || + $Apache::lonhomework::parsing_a_task ) { $mode='problem'; $status=$Apache::inputtags::status[-1]; } - my $discussion=&Apache::lonfeedback::list_discussion($mode,$status); + my $discussion; + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['LONCAPA_INTERNAL_no_discussion']); + if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) || + $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') { + $discussion=&Apache::lonfeedback::list_discussion($mode,$status); + } if ($target eq 'tex') { $discussion.='\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}'; &Apache::lonxml::newparser($parser,\$discussion,''); return ''; } else { - return $discussion.''; + return $discussion.&Apache::loncommon::endbodytag(); } } @@ -238,9 +250,9 @@ sub maketoken { $symb=&Apache::lonnet::symbread(); } unless ($tuname) { - $tuname=$ENV{'user.name'}; - $tudom=$ENV{'user.domain'}; - $tcrsid=$ENV{'request.course.id'}; + $tuname=$env{'user.name'}; + $tudom=$env{'user.domain'}; + $tcrsid=$env{'request.course.id'}; } return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); @@ -260,13 +272,7 @@ sub printtokenheader { $tcrsid=$courseid; } - my %reply=&Apache::lonnet::get('environment', - ['firstname','middlename','lastname','generation'], - $tudom,$tuname); - my $plainname=$reply{'firstname'}.' '. - $reply{'middlename'}.' '. - $reply{'lastname'}.' '. - $reply{'generation'}; + my $plainname=&Apache::loncommon::plainname($tuname,$tudom); if ($target eq 'web') { my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); @@ -276,7 +282,7 @@ sub printtokenheader { '
'.&mt('User').': '.$tuname.' at '.$tudom. '
'.&mt('ID').': '.$idhash{$tuname}. '
'.&mt('CourseID').': '.$tcrsid. - '
'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}. + '
'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}. '
'.&mt('DocID').': '.$token. '
'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'
'; } else { @@ -284,12 +290,12 @@ sub printtokenheader { } } -sub fontsettings() { +sub fontsettings { my $headerstring=''; - if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { + if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) { $headerstring.= ''; - } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { + } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) { $headerstring.= ''; } @@ -309,6 +315,7 @@ sub xmlparse { &setup_globals($request,$target); &Apache::inputtags::initialize_inputtags(); + &Apache::bridgetask::initialize_bridgetask(); &Apache::outputtags::initialize_outputtags(); &Apache::edit::initialize_edit(); &Apache::londefdef::initialize_londefdef(); @@ -317,9 +324,9 @@ sub xmlparse { # do we have a course style file? # - if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { + if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') { my $bodytext= - $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; + $env{'course.'.$env{'request.course.id'}.'.default_xml_style'}; if ($bodytext) { foreach my $file (split(',',$bodytext)) { my $location=&Apache::lonnet::filelocation('',$file); @@ -330,8 +337,8 @@ sub xmlparse { } } } - } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) { - my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'}); + } elsif ($env{'construct.style'} && ($env{'request.state'} eq 'construct')) { + my $location=&Apache::lonnet::filelocation('',$env{'construct.style'}); my $styletext=&Apache::lonnet::getfile($location); if ($styletext ne '-1') { %style_for_target = (%style_for_target, @@ -340,7 +347,7 @@ sub xmlparse { } #&printalltags(); my @pars = (); - my $pwd=$ENV{'request.filename'}; + my $pwd=$env{'request.filename'}; $pwd =~ s:/[^/]*$::; &newparser(\@pars,\$content_file_string,$pwd); @@ -353,40 +360,22 @@ sub xmlparse { my @stack = (); my @parstack = (); - &initdepth; - + &initdepth(); + &init_alarm(); my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, $safeeval,\%style_for_target); - if ($ENV{'request.uri'}) { - &writeallows($ENV{'request.uri'}); + if ($env{'request.uri'}) { + &writeallows($env{'request.uri'}); } &do_registered_ssi(); if ($Apache::lonxml::counter_changed) { &store_counter() } + if ($env{'form.return_only_error_and_warning_counts'}) { + return "$errorcount:$warningcount"; + } return $finaloutput; } -sub htmlclean { - my ($raw,$full)=@_; - - 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; - $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; - unless ($full) { - $output=~s/\<[\/]*(body|head|html)\>//gis; - } - - $tree = $tree->delete; - - return $output; -} - sub latex_special_symbols { my ($string,$where)=@_; if ($where eq 'header') { @@ -399,18 +388,18 @@ sub latex_special_symbols { $string=~s/([^\\])\#/$1\\\#/g; } else { $string=~s/\\/\\ensuremath{\\backslash}/g; - $string=~s/([^\\]|^)\%/$1\\\%/g; - $string=~s/([^\\]|^)\$/$1\\\$/g; - $string=~s/([^\\])\_/$1\\_/g; - $string=~s/\$\$/\$\\\$/g; - $string=~s/\_\_/\_\\\_/g; - $string=~s/\#\#/\#\\\#/g; + $string=~s/\\\%|\%/\\\%/g; + $string=~s/\\{|{/\\{/g; + $string=~s/\\}|}/\\}/g; + $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g; + $string=~s/\\\$|\$/\\\$/g; + $string=~s/\\\_|\_/\\\_/g; $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less $string=&Apache::lonprintout::character_chart($string); # any & or # leftover should be safe to just escape - $string=~s/([^\\]|^)\&/$1\\\&/g; - $string=~s/([^\\]|^)\#/$1\\\#/g; + $string=~s/\\\&|\&/\\\&/g; + $string=~s/\\\#|\#/\\\#/g; $string=~s/\|/\$\\mid\$/g; #single { or } How to escape? } @@ -423,6 +412,7 @@ sub inner_xmlparse { my $result; my $token; my $dontpop=0; + my $startredirection = $Apache::lonxml::redirection; while ( $#$pars > -1 ) { while ($token = $$pars['-1']->get_token) { if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { @@ -532,7 +522,12 @@ sub inner_xmlparse { # $finaloutput.=&endredirection; # } - + if ($target eq 'grade') { &endredirection(); } + if ( $Apache::lonxml::redirection > $startredirection) { + while ($Apache::lonxml::redirection > $startredirection) { + $finaloutput .= &endredirection(); + } + } if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { $finaloutput=&afterburn($finaloutput); } @@ -641,7 +636,7 @@ sub setup_globals { $Apache::lonxml::evaluate = 1; $Apache::lonxml::import = 1; } elsif ($target eq 'grade') { - &startredirection; + &startredirection(); #ended in inner_xmlparse on exit $Apache::lonxml::metamode = 0; $Apache::lonxml::evaluate = 1; $Apache::lonxml::import = 1; @@ -670,16 +665,22 @@ sub setup_globals { sub init_safespace { my ($target,$safeeval,$safehole,$safeinit) = @_; + $safeeval->deny_only(':dangerous'); + $safeeval->reval('use Math::Complex;'); + $safeeval->permit_only(":default"); $safeeval->permit("entereval"); $safeeval->permit(":base_math"); $safeeval->permit("sort"); $safeeval->permit("time"); + $safeeval->deny("rand"); + $safeeval->deny("srand"); $safeeval->deny(":base_io"); $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval, '&chem_standard_order'); + $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status'); $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); @@ -724,6 +725,36 @@ sub init_safespace { $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); + $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat'); + $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval, + '&Math::Cephes::Matrix::new'); + $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval, + '&Math::Cephes::Matrix::coef'); + $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval, + '&Math::Cephes::Matrix::clr'); + $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval, + '&Math::Cephes::Matrix::add'); + $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval, + '&Math::Cephes::Matrix::sub'); + $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval, + '&Math::Cephes::Matrix::mul'); + $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval, + '&Math::Cephes::Matrix::div'); + $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval, + '&Math::Cephes::Matrix::inv'); + $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval, + '&Math::Cephes::Matrix::transp'); + $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval, + '&Math::Cephes::Matrix::simq'); + $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval, + '&Math::Cephes::Matrix::mat_to_vec'); + $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval, + '&Math::Cephes::Matrix::vec_to_mat'); + $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, + '&Math::Cephes::Matrix::check'); + $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, + '&Math::Cephes::Matrix::check'); + # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); @@ -760,13 +791,18 @@ sub init_safespace { # $safeeval->deny(":base_orig"); $safeeval->permit("require"); $safeinit .= ';$external::target="'.$target.'";'; - my $rndseed; - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); - $safeinit .= ';$external::randomseed="'.$rndseed.'";'; - &Apache::lonxml::debug("Setting rndseed to $rndseed"); &Apache::run::run($safeinit,$safeeval); + &initialize_rndseed($safeeval); +} +sub initialize_rndseed { + my ($safeeval)=@_; + my $rndseed; + my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); + $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); + my $safeinit = '$external::randomseed="'.$rndseed.'";'; + &Apache::lonxml::debug("Setting rndseed to $rndseed"); + &Apache::run::run($safeinit,$safeeval); } sub default_homework_load { @@ -781,6 +817,28 @@ 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) { @@ -793,7 +851,7 @@ sub startredirection { sub endredirection { if (!$Apache::lonxml::redirection) { - &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); + &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller); return ''; } $Apache::lonxml::redirection--; @@ -868,7 +926,11 @@ sub get_all_text_unbalanced { $tag='<'.$tag.'>'; while ($token = $$pars[-1]->get_token) { if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[0] eq 'T' && $token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -899,8 +961,8 @@ sub increment_counter { } sub init_counter { - if (defined($ENV{'form.counter'})) { - $Apache::lonxml::counter=$ENV{'form.counter'}; + if (defined($env{'form.counter'})) { + $Apache::lonxml::counter=$env{'form.counter'}; $Apache::lonxml::counter_changed=0; } else { $Apache::lonxml::counter=1; @@ -934,7 +996,11 @@ sub get_all_text { while (($depth >=0) && ($token = $$pars[-1]->get_token)) { #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -986,7 +1052,11 @@ sub get_all_text { #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); if (($token->[0] eq 'T')||($token->[0] eq 'C')|| ($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -1014,7 +1084,8 @@ sub get_all_text { sub newparser { my ($parser,$contentref,$dir) = @_; push (@$parser,HTML::LCParser->new($contentref)); - $$parser['-1']->xml_mode('1'); + $$parser[-1]->xml_mode(1); + $$parser[-1]->marked_sections(1); if ( $dir eq '' ) { push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); } else { @@ -1038,11 +1109,19 @@ sub parstring { return $temp; } +sub extlink { + my ($res,$exact)=@_; + if (!$exact) { + $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res); + } + push(@Apache::lonxml::extlinks,$res) +} + sub writeallows { unless ($#extlinks>=0) { return; } - my $thisurl='/res/'.&Apache::lonnet::declutter(shift); - if ($ENV{'httpref.'.$thisurl}) { - $thisurl=$ENV{'httpref.'.$thisurl}; + my $thisurl = &Apache::lonnet::clutter(shift); + if ($env{'httpref.'.$thisurl}) { + $thisurl=$env{'httpref.'.$thisurl}; } my $thisdir=$thisurl; $thisdir=~s/\/[^\/]+$//; @@ -1075,24 +1154,24 @@ sub afterburn { my $result=shift; &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['highlight','anchor','link']); - if ($ENV{'form.highlight'}) { - foreach (split(/\,/,$ENV{'form.highlight'})) { + if ($env{'form.highlight'}) { + foreach (split(/\,/,$env{'form.highlight'})) { my $anchorname=$_; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; $result=~s/(\Q$matchthis\E)/\$1\<\/font\>/gs; } } - if ($ENV{'form.link'}) { - foreach (split(/\,/,$ENV{'form.link'})) { + if ($env{'form.link'}) { + foreach (split(/\,/,$env{'form.link'})) { my ($anchorname,$linkurl)=split(/\>/,$_); my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/gs; } } - if ($ENV{'form.anchor'}) { - my $anchorname=$ENV{'form.anchor'}; + if ($env{'form.anchor'}) { + my $anchorname=$env{'form.anchor'}; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/s; @@ -1122,7 +1201,6 @@ sub createnewhtml { my $title=&mt('Title of document goes here'); my $body=&mt('Body of document goes here'); my $filecontents=(< $title @@ -1186,10 +1264,7 @@ FULLPAGE $xml_help=&Apache::loncommon::helpLatexCheatsheet(); } my $cleanbut = ''; - if ($filetype eq 'html') { - $cleanbut=''; - } + my $titledisplay=&display_title(); my %lt=&Apache::lonlocal::texthash('st' => 'Save this', 'vi' => 'View', @@ -1209,7 +1284,7 @@ $initialize $xml_help $buttons
- +
$buttons
@@ -1222,24 +1297,24 @@ ENDFOOTER } sub get_target { - my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); - if ( $ENV{'request.state'} eq 'published') { - if ( defined($ENV{'form.grade_target'}) + my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}); + if ( $env{'request.state'} eq 'published') { + if ( defined($env{'form.grade_target'}) && ($viewgrades == 'F' )) { - return ($ENV{'form.grade_target'}); - } elsif (defined($ENV{'form.grade_target'})) { - if (($ENV{'form.grade_target'} eq 'web') || - ($ENV{'form.grade_target'} eq 'tex') ) { - return $ENV{'form.grade_target'} + return ($env{'form.grade_target'}); + } elsif (defined($env{'form.grade_target'})) { + if (($env{'form.grade_target'} eq 'web') || + ($env{'form.grade_target'} eq 'tex') ) { + return $env{'form.grade_target'} } else { return 'web'; } } else { return 'web'; } - } elsif ($ENV{'request.state'} eq 'construct') { - if ( defined($ENV{'form.grade_target'})) { - return ($ENV{'form.grade_target'}); + } elsif ($env{'request.state'} eq 'construct') { + if ( defined($env{'form.grade_target'})) { + return ($env{'form.grade_target'}); } else { return 'web'; } @@ -1253,14 +1328,14 @@ sub handler { my $target=&get_target(); - $Apache::lonxml::debug=$ENV{'user.debug'}; + $Apache::lonxml::debug=$env{'user.debug'}; - if ($ENV{'browser.mathml'}) { - &Apache::loncommon::content_type($request,'text/xml'); - } else { - &Apache::loncommon::content_type($request,'text/html'); - } + &Apache::loncommon::content_type($request,'text/html'); &Apache::loncommon::no_cache($request); + if ($env{'request.state'} eq 'published') { + $request->set_last_modified(&Apache::lonnet::metadata($request->uri, + 'lastrevisiondate')); + } $request->send_http_header; return OK if $request->header_only; @@ -1276,9 +1351,9 @@ sub handler { # # Edit action? Save file. # - unless ($ENV{'request.state'} eq 'published') { - if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { - if (&storefile($file,$ENV{'form.filecont'})) { + unless ($env{'request.state'} eq 'published') { + if ($env{'form.savethisfile'}) { + if (&storefile($file,$env{'form.filecont'})) { &Apache::lonxml::info("". &mt('Updated').": ". &Apache::lonlocal::locallocaltime(time). @@ -1303,42 +1378,46 @@ $bodytag ENDNOTFOUND $filecontents=''; - if ($ENV{'request.state'} ne 'published') { + if ($env{'request.state'} ne 'published') { if ($filetype eq 'sty') { $filecontents=&createnewsty(); } else { $filecontents=&createnewhtml(); } - $ENV{'form.editmode'}='Edit'; #force edit mode + $env{'form.editmode'}='Edit'; #force edit mode } } else { - unless ($ENV{'request.state'} eq 'published') { + unless ($env{'request.state'} eq 'published') { if ($filecontents=~/BEGIN LON-CAPA Internal/) { - &Apache::lonxml::error(&mt('This file appears to be a rendering of a Lon-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); - } - - if ($ENV{'form.attemptclean'}) { - $filecontents=&htmlclean($filecontents,1); + &Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); } # # we are in construction space, see if edit mode forced - &Apache::loncommon::get_unprocessed_cgi - ($ENV{'QUERY_STRING'},['editmode']); + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['editmode']); } - if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { + if (!$env{'form.editmode'} || $env{'form.viewmode'}) { $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, '',%mystyle); + undef($Apache::lonhomework::parsing_a_task); + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['rawmode']); + if ($env{'rawmode'}) { $result = $filecontents; } } } # # Edit action? Insert editing commands # - unless ($ENV{'request.state'} eq 'published') { - if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { + unless ($env{'request.state'} eq 'published') { + if ($env{'form.editmode'} && (!($env{'form.viewmode'}))) { my $displayfile=$request->uri; $displayfile=~s/^\/[^\/]*//; - $result=''. + my $bodytag=''; + if ($env{'environment.remote'} eq 'off') { + $bodytag=&Apache::loncommon::bodytag(); + } + $result=''.$bodytag. &Apache::lonxml::message_location().'

'. $displayfile. '

'; @@ -1356,10 +1435,10 @@ ENDNOTFOUND sub display_title { my $result; - if ($ENV{'request.state'} eq 'construct') { + if ($env{'request.state'} eq 'construct') { my $title=&Apache::lonnet::gettitle(); if (!defined($title) || $title eq '') { - $title = $ENV{'request.filename'}; + $title = $env{'request.filename'}; $title = substr($title, rindex($title, '/') + 1); } $result = ""; @@ -1371,15 +1450,32 @@ sub debug { if ($Apache::lonxml::debug eq "1") { $|=1; my $request=$Apache::lonxml::request; - if (!$request) { $request=Apache->request; } + if (!$request) { + eval { $request=Apache->request; }; + } + if (!$request) { + eval { $request=Apache2::RequestUtil->request; }; + } $request->print('
DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."
\n"); #&Apache::lonnet::logthis($_[0]); } } +sub show_error_warn_msg { + if ($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 

 	push(@Apache::lonxml::error_messages,
 	     $Apache::lonxml::warnings_error_header.
@@ -1393,19 +1489,31 @@ sub error {
 	    $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
 	} 
 	#notify author
-	&Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('
',@_));
+	&Apache::lonmsg::author_res_msg($env{'request.filename'},join('
',@_));
 	#notify course
-	if ( $symb && $ENV{'request.course.id'} ) {
+	if ( $symb && $env{'request.course.id'} ) {
+	    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+	    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 	    my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
-	    my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
+	    my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
 	    my @userlist;
 	    foreach (keys %users) {
 		my ($user,$domain) = split(/:/, $_);
 		push(@userlist,"$user\@$domain");
-		&Apache::lonmsg::user_normal_msg($user,$domain,
+		my $key=$declutter.'_'.$user.'_'.$domain;
+		my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
+						      [$key],
+						      $cdom,$cnum);
+		my $now=time;
+		if ($now-$lastnotified{$key}>86400) {
+		    &Apache::lonmsg::user_normal_msg($user,$domain,
 						 "Error [$declutter]",join('
',@_));
+		    &Apache::lonnet::put('nohist_xmlerrornotifications',
+					 {$key => $now},
+					 $cdom,$cnum);		
+		}
 	    }
-	    if ($ENV{'request.role.adv'}) {
+	    if ($env{'request.role.adv'}) {
 		$errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
 	    } else {
 		$errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
@@ -1418,10 +1526,8 @@ sub error {
 sub warning {
     $warningcount++;
   
-    if ($ENV{'form.grade_target'} ne 'tex') {
-	if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
-	    my $request=$Apache::lonxml::request;
-	    if (!$request) { $request=Apache->request; }
+    if ($env{'form.grade_target'} ne 'tex') {
+	if ( &show_error_warn_msg() ) {
 	    push(@Apache::lonxml::warning_messages,
 		 $Apache::lonxml::warnings_error_header.
 		 "WARNING:".join('
',@_)."
\n");
@@ -1431,8 +1537,8 @@ sub warning {
 }
 
 sub info {
-    if ($ENV{'form.grade_target'} ne 'tex' 
-	&& $ENV{'request.state'} eq 'construct') {
+    if ($env{'form.grade_target'} ne 'tex' 
+	&& $env{'request.state'} eq 'construct') {
 	push(@Apache::lonxml::info_messages,join('
',@_)."
\n");
     }
 }
@@ -1583,36 +1689,37 @@ sub helpinfo {
 sub whichuser {
   my ($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;
+  if (defined($env{'form.grade_symb'})) {
+      my ($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);
 }