Annotation of loncom/homework/lonhomework.pm, revision 1.203

1.63      albertel    1: # The LearningOnline Network with CAPA
1.52      albertel    2: # The LON-CAPA Homework handler
1.63      albertel    3: #
1.203   ! albertel    4: # $Id: lonhomework.pm,v 1.202 2005/03/31 15:56:13 albertel Exp $
1.63      albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
1.159     www        27: 
1.1       albertel   28: 
                     29: package Apache::lonhomework;
                     30: use strict;
1.73      albertel   31: use Apache::style();
                     32: use Apache::lonxml();
                     33: use Apache::lonnet();
                     34: use Apache::lonplot();
                     35: use Apache::inputtags();
                     36: use Apache::structuretags();
                     37: use Apache::randomlabel();
                     38: use Apache::response();
                     39: use Apache::hint();
                     40: use Apache::outputtags();
1.83      albertel   41: use Apache::caparesponse();
                     42: use Apache::radiobuttonresponse();
                     43: use Apache::optionresponse();
                     44: use Apache::imageresponse();
                     45: use Apache::essayresponse();
                     46: use Apache::externalresponse();
1.106     albertel   47: use Apache::rankresponse();
1.107     albertel   48: use Apache::matchresponse();
1.137     albertel   49: use Apache::chemresponse();
1.169     albertel   50: use Apache::drawimage();
1.26      www        51: use Apache::Constants qw(:common);
1.73      albertel   52: use HTML::Entities();
1.83      albertel   53: use Apache::loncommon();
1.146     albertel   54: use Apache::lonlocal;
1.179     albertel   55: use Time::HiRes qw( gettimeofday tv_interval );
1.188     foxr       56: use Apache::lonnet();
                     57: 
1.189     albertel   58: # FIXME - improve commenting
1.188     foxr       59: 
1.43      albertel   60: 
1.69      harris41   61: BEGIN {
1.145     albertel   62:     &Apache::lonxml::register_insert();
1.43      albertel   63: }
                     64: 
1.188     foxr       65: 
                     66: #
1.189     albertel   67: # Decides what targets to render for.
1.188     foxr       68: # Implicit inputs:
                     69: #   Various session environment variables:
1.189     albertel   70: #      request.state -  published  - is a /res/ resource
                     71: #                       uploaded   - is a /uploaded/ resource
                     72: #                       contruct   - is a /priv/ resource
                     73: #      form.grade_target - a form parameter requesting a specific target
1.5       albertel   74: sub get_target {
1.189     albertel   75:     &Apache::lonxml::debug("request.state = $ENV{'request.state'}");
1.188     foxr       76:     if( defined($ENV{'form.grade_target'})) {
1.189     albertel   77: 	&Apache::lonxml::debug("form.grade_target= $ENV{'form.grade_target'}");
1.188     foxr       78:     } else {
1.189     albertel   79: 	&Apache::lonxml::debug("form.grade_target <undefined>");
1.188     foxr       80:     }
1.145     albertel   81:     if (($ENV{'request.state'} eq "published") ||
                     82: 	($ENV{'request.state'} eq "uploaded")) {
                     83: 	if ( defined($ENV{'form.grade_target'}  ) 
                     84: 	     && ($ENV{'form.grade_target'} eq 'tex')) {
                     85: 	    return ($ENV{'form.grade_target'});
                     86: 	} elsif ( defined($ENV{'form.grade_target'}  ) 
                     87: 		  && ($Apache::lonhomework::viewgrades eq 'F' )) {
                     88: 	    return ($ENV{'form.grade_target'});
                     89: 	}
                     90: 
1.62      albertel   91: 	if ( defined($ENV{'form.submitted'}) &&
1.145     albertel   92: 	     ( !defined($ENV{'form.resetdata'})) &&
                     93: 	     ( !defined($ENV{'form.newrandomization'}))) {
                     94: 	    return ('grade', 'web');
                     95: 	} else {
                     96: 	    return ('web');
                     97: 	}
                     98:     } elsif ($ENV{'request.state'} eq "construct") {
                     99: 	if ( defined($ENV{'form.grade_target'}) ) {
                    100: 	    return ($ENV{'form.grade_target'});
                    101: 	}
                    102: 	if ( defined($ENV{'form.preview'})) {
                    103: 	    if ( defined($ENV{'form.submitted'})) {
                    104: 		return ('grade', 'web');
                    105: 	    } else {
                    106: 		return ('web');
                    107: 	    }
                    108: 	} else {
1.150     albertel  109: 	    if ( $ENV{'form.problemmode'} eq &mt('View') ||
                    110: 		 $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) {
1.145     albertel  111: 		if ( defined($ENV{'form.submitted'}) &&
                    112: 		     (!defined($ENV{'form.resetdata'})) &&
                    113: 		     (!defined($ENV{'form.newrandomization'}))) {
                    114: 		    return ('grade', 'web','answer');
                    115: 		} else {
                    116: 		    return ('web','answer');
                    117: 		}
1.190     albertel  118: 	    } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ||
1.191     albertel  119: 		      $ENV{'form.problemmode'} eq 'Edit') {
1.145     albertel  120: 		if ( $ENV{'form.submitted'} eq 'edit' ) {
1.150     albertel  121: 		    if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145     albertel  122: 			return ('modified','web','answer');
                    123: 		    } else {
                    124: 			return ('modified','edit');
                    125: 		    }
                    126: 		} else {
                    127: 		    return ('edit');
                    128: 		}
                    129: 	    } else {
                    130: 		return ('web');
                    131: 	    }
                    132: 	}
1.15      albertel  133:     }
1.145     albertel  134:     return ();
1.5       albertel  135: }
                    136: 
1.3       albertel  137: sub setup_vars {
1.145     albertel  138:     my ($target) = @_;
                    139:     return ';'
1.11      albertel  140: #  return ';$external::target='.$target.';';
1.2       albertel  141: }
                    142: 
                    143: sub send_header {
1.145     albertel  144:     my ($request)= @_;
                    145:     $request->print(&Apache::lontexconvert::header());
1.16      albertel  146: #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2       albertel  147: }
                    148: 
1.36      albertel  149: sub createmenu {
1.145     albertel  150:     my ($which,$request)=@_;
                    151:     if ($which eq 'grade') {
                    152: 	$request->print('<script language="JavaScript"> 
1.91      albertel  153:           hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52      albertel  154:                  "height=350,width=150,menubar=no");
                    155:           </script>');
1.145     albertel  156:     }
1.36      albertel  157: }
                    158: 
1.2       albertel  159: sub send_footer {
1.145     albertel  160:     my ($request)= @_;
1.16      albertel  161: #  $request->print('</form>');
1.145     albertel  162:     $request->print(&Apache::lontexconvert::footer());
1.2       albertel  163: }
                    164: 
1.200     albertel  165: sub proctor_checked_in {
1.202     albertel  166:     my ($slot)=@_;
                    167:     my @allowed=split(",",$slot->{'proctor'});
                    168:     foreach my $possible (@allowed) { 
                    169: 	if ($Apache::lonhomework::history{'resource.checkedin'} eq $possible) {
                    170: 	    return 1;
                    171: 	}
                    172:     }
1.200     albertel  173:     return 0;
                    174: }
                    175: 
1.52      albertel  176: $Apache::lonxml::browse='';
1.152     albertel  177: sub check_ip_acc {
                    178:     my ($acc)=@_;
1.154     albertel  179:     if (!defined($acc) || $acc =~ /^\s*$/) { return 1; }
1.152     albertel  180:     my $allowed=0;
                    181:     my $ip=$ENV{'REMOTE_ADDR'};
                    182:     my $name;
                    183:     foreach my $pattern (split(',',$acc)) {
                    184: 	if ($pattern =~ /\*$/) {
                    185: 	    #35.8.*
                    186: 	    $pattern=~s/\*//;
                    187: 	    if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
                    188: 	} elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {    
                    189: 	    #35.8.3.[34-56]
                    190: 	    my $low=$2;
                    191: 	    my $high=$3;
                    192: 	    $pattern=$1;
                    193: 	    if ($ip =~ /^\Q$pattern\E/) { 
                    194: 		my $last=(split(/\./,$ip))[3];
                    195: 		if ($last <=$high && $last >=$low) { $allowed=1; }
                    196: 	    }
                    197: 	} elsif ($pattern =~ /^\*/) {
                    198: 	    #*.msu.edu
                    199: 	    $pattern=~s/\*//;
                    200: 	    if (!defined($name)) {
                    201: 		use Socket;
                    202: 		my $netaddr=inet_aton($ip);
                    203: 		($name)=gethostbyaddr($netaddr,AF_INET);
1.158     albertel  204: 	    }
1.152     albertel  205: 	    if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
                    206: 	} elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
                    207: 	    #127.0.0.1
                    208: 	    if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
                    209: 	} else {
                    210: 	    #some.name.com
                    211: 	    if (!defined($name)) {
                    212: 		use Socket;
                    213: 		my $netaddr=inet_aton($ip);
                    214: 		($name)=gethostbyaddr($netaddr,AF_INET);
                    215: 	    }
                    216: 	    if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
                    217: 	}
                    218: 	if ($allowed) { last; }
                    219:     }
                    220:     return $allowed;
                    221: }
1.198     albertel  222: 
                    223: sub check_task_access {
1.200     albertel  224:     #does it pass normal muster
                    225:     my ($status,$datemsg)=&check_access;
                    226:     if ($status eq 'SHOW_ANSWER' ||
                    227: 	$status eq 'CLOSED' ||
                    228: 	$status eq 'CANNOT_ANSWER' ||
                    229: 	$status eq 'INVALID_ACCESS' ||
                    230: 	$status eq 'UNAVAILABLE') {
                    231: 	return ($status,$datemsg);
                    232:     }
1.203   ! albertel  233:     if ($ENV{'request.state'} eq "construct") {
        !           234: 	return ($status,$datemsg);
        !           235:     }
1.200     albertel  236:     
                    237:     my ($id)=@_;
                    238:     my @slots=split(':',&Apache::lonnet::EXT("resource.$id.available"));
                    239: #    if (!@slots) {
                    240: #	return ($status,$datemsg);
                    241: #    }
                    242:     my $slotstatus='NOT_IN_A_SLOT';
1.202     albertel  243:     my $returned_slot;
1.200     albertel  244:     foreach my $slot (@slots) {
1.201     albertel  245: 	&Apache::lonxml::debug("getting $slot");
1.200     albertel  246: 	my %slot=&Apache::lonnet::get_slot($slot);
1.201     albertel  247: 	&Apache::lonhomework::showhash(%slot);
1.200     albertel  248: 	if ($slot{'starttime'} < time &&
                    249: 	    $slot{'endtime'} > time &&
1.201     albertel  250: 	    &check_ip_acc($slot{'ip'})) {
1.202     albertel  251: 	    &Apache::lonxml::debug("$slot is good");
                    252: 	    $slotstatus='NEEDS_CHECKIN';
                    253: 	    $returned_slot=\%slot;
1.200     albertel  254: 	    last;
                    255: 	}
                    256:     }
1.202     albertel  257:     if ($slotstatus eq 'NEEDS_CHECKIN' &&
                    258: 	&proctor_checked_in($returned_slot)) {
                    259: 	&Apache::lonxml::debug("protoctor checked in");
1.200     albertel  260: 	$slotstatus='CAN_ANSWER';
                    261:     }
1.202     albertel  262:     return ($slotstatus,$datemsg,$returned_slot);
1.198     albertel  263: }
1.200     albertel  264: 
1.92      bowersj2  265: # JB, 9/24/2002: Any changes in this function may require a change
                    266: # in lonnavmaps::resource::getDateStatus.
1.53      www       267: sub check_access {
1.145     albertel  268:     my ($id) = @_;
                    269:     my $date ='';
                    270:     my $status;
                    271:     my $datemsg = '';
                    272:     my $lastdate = '';
                    273:     my $temp;
                    274:     my $type;
                    275:     my $passed;
                    276: 
                    277:     if ($ENV{'request.state'} eq "construct") {
1.167     albertel  278: 	if ($ENV{'form.problemstate'}) {
1.165     albertel  279: 	    if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
1.167     albertel  280: 		if ( ! ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
                    281: 			lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168     albertel  282: 		    return ('CANNOT_ANSWER',
1.174     www       283: 			    &mt('is in this state due to author settings.'));
1.167     albertel  284: 		}
1.165     albertel  285: 	    } else {
                    286: 		return ($ENV{'form.problemstate'},
1.174     www       287: 			&mt('is in this state due to author settings.'));
1.165     albertel  288: 	    }
                    289: 	}
1.145     albertel  290: 	&Apache::lonxml::debug("in construction ignoring dates");
                    291: 	$status='CAN_ANSWER';
1.146     albertel  292: 	$datemsg=&mt('is in under construction');
1.163     albertel  293: #	return ($status,$datemsg);
1.145     albertel  294:     }
                    295: 
                    296:     &Apache::lonxml::debug("checking for part :$id:");
                    297:     &Apache::lonxml::debug("time:".time);
1.152     albertel  298: 
1.163     albertel  299:     if ($ENV{'request.state'} ne "construct") {
                    300: 	my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
                    301: 	if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
                    302: 	    $status='INVALID_ACCESS';
                    303: 	    $date=&mt("can not be accessed from your location.");
1.145     albertel  304: 	    return($status,$date);
                    305: 	}
1.163     albertel  306: 	
                    307: 	foreach $temp ("opendate","duedate","answerdate") {
                    308: 	    $lastdate = $date;
                    309: 	    $date = &Apache::lonnet::EXT("resource.$id.$temp");
                    310: 	    my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
                    311: 	    if ($thistype =~ /^(con_lost|no_such_host)/ ||
                    312: 		$date     =~ /^(con_lost|no_such_host)/) {
                    313: 		$status='UNAVAILABLE';
                    314: 		$date=&mt("may open later.");
                    315: 		return($status,$date);
                    316: 	    }
                    317: 	    if ($thistype eq 'date_interval') {
                    318: 		if ($temp eq 'opendate') {
                    319: 		    $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
                    320: 		}
                    321: 		if ($temp eq 'answerdate') {
                    322: 		    $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
                    323: 		}
1.145     albertel  324: 	    }
1.163     albertel  325: 	    &Apache::lonxml::debug("found :$date: for :$temp:");
                    326: 	    if ($date eq '') {
                    327: 		$date = &mt("an unknown date"); $passed = 0;
                    328: 	    } elsif ($date eq 'con_lost') {
                    329: 		$date = &mt("an indeterminate date"); $passed = 0;
                    330: 	    } else {
                    331: 		if (time < $date) { $passed = 0; } else { $passed = 1; }
                    332: 		$date = localtime $date;
1.145     albertel  333: 	    }
1.163     albertel  334: 	    if (!$passed) { $type=$temp; last; }
1.145     albertel  335: 	}
1.163     albertel  336: 	&Apache::lonxml::debug("have :$type:$passed:");
                    337: 	if ($passed) {
                    338: 	    $status='SHOW_ANSWER';
                    339: 	    $datemsg=$date;
                    340: 	} elsif ($type eq 'opendate') {
                    341: 	    $status='CLOSED';
                    342: 	    $datemsg = &mt("will open on")." $date";
                    343: 	} elsif ($type eq 'duedate') {
                    344: 	    $status='CAN_ANSWER';
                    345: 	    $datemsg = &mt("is due at")." $date";
                    346: 	} elsif ($type eq 'answerdate') {
                    347: 	    $status='CLOSED';
                    348: 	    $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145     albertel  349: 	}
                    350:     }
                    351:     if ($status eq 'CAN_ANSWER') {
                    352: 	#check #tries, and if correct.
                    353: 	my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
                    354: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
                    355: 	if ( $tries eq '' ) { $tries = '0'; }
1.164     albertel  356: 	if ( $maxtries eq '' && 
                    357: 	     $ENV{'request.state'} ne 'construct') { $maxtries = '2'; } 
                    358: 	if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145     albertel  359: 	# if (correct and show prob status) or excused then CANNOT_ANSWER
                    360: 	if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
                    361: 	    &&
                    362: 	    lc($Apache::lonhomework::problemstatus) ne 'no')
                    363: 	   ||
                    364: 	   $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
                    365: 	    $status = 'CANNOT_ANSWER';
                    366: 	}
1.121     albertel  367:     }
1.181     albertel  368:     if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177     albertel  369: 	my $interval=&Apache::lonnet::EXT("resource.$id.interval");
                    370: 	&Apache::lonxml::debug("looking for interval $interval");
                    371: 	if ($interval) {
                    372: 	    my $first_access=&Apache::lonnet::get_first_access('map');
                    373: 	    &Apache::lonxml::debug("looking for accesstime $first_access");
                    374: 	    if (!$first_access) {
                    375: 		$status='NOT_YET_VIEWED';
1.192     albertel  376: 		$datemsg=&seconds_to_human_length($interval);
1.177     albertel  377: 	    } else {
                    378: 		my $newdate=localtime($first_access+$interval);
                    379: 		if (time > ($first_access+$interval)) {
                    380: 		    $status='CLOSED';
                    381: 		    $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";
                    382: 		} else {
                    383: 		    $datemsg = &mt("is due at")." $newdate";
                    384: 		}
                    385: 	    }
                    386: 	}
                    387:     }
1.133     albertel  388:   #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
                    389:   #    (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
                    390:   #    return ('UNCHECKEDOUT','needs to be checked out');
                    391:   #}
1.54      www       392: 
                    393: 
1.145     albertel  394:     &Apache::lonxml::debug("sending back :$status:$datemsg:");
                    395:     if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
                    396: 	&Apache::lonxml::debug("should be allowed to browse a resource when closed");
                    397: 	$status='CAN_ANSWER';
1.146     albertel  398: 	$datemsg=&mt('is closed but you are allowed to view it');
1.145     albertel  399:     }
1.106     albertel  400: 
1.145     albertel  401:     return ($status,$datemsg);
1.20      albertel  402: }
                    403: 
1.192     albertel  404: sub seconds_to_human_length {
                    405:     my ($length)=@_;
                    406: 
                    407:     my $seconds=$length%60; $length=int($length/60);
                    408:     my $minutes=$length%60; $length=int($length/60);
                    409:     my $hours=$length%24;   $length=int($length/24);
                    410:     my $days=$length;
                    411: 
                    412:     my $timestr;
                    413:     if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
                    414:     if ($hours > 0) { $timestr.=($timestr?", ":"").
                    415: 			  &mt('[quant,_1,hour]',$hours); }
                    416:     if ($minutes > 0) { $timestr.=($timestr?", ":"").
                    417: 			    &mt('[quant,_1,minute]',$minutes); }
                    418:     if ($seconds > 0) { $timestr.=($timestr?", ":"").
                    419: 			    &mt('[quant,_1,second]',$seconds); }
                    420:     return $timestr;
                    421: }
                    422: 
1.41      albertel  423: sub showhash {
1.145     albertel  424:     my (%hash) = @_;
                    425:     &showhashsubset(\%hash,'.');
                    426:     return '';
1.79      albertel  427: }
                    428: 
1.106     albertel  429: sub showarray {
                    430:     my ($array)=@_;
                    431:     my $string="(";
                    432:     foreach my $elm (@{ $array }) {
1.193     albertel  433: 	if (ref($elm) eq 'ARRAY') {
                    434: 	    $string.=&showarray($elm);
                    435: 	} elsif (ref($elm) eq 'HASH') {
                    436: 	    $string.= "HASH --- \n<br />";
                    437: 	    $string.= &showhashsubset($elm,'.');
1.106     albertel  438: 	} else {
                    439: 	    $string.="$elm,"
                    440: 	}
                    441:     }
                    442:     chop($string);
                    443:     $string.=")";
                    444:     return $string;
                    445: }
                    446: 
1.79      albertel  447: sub showhashsubset {
1.145     albertel  448:     my ($hash,$keyre) = @_;
                    449:     my $resultkey;
                    450:     foreach $resultkey (sort keys %$hash) {
1.193     albertel  451: 	if ($resultkey !~ /$keyre/) { next; }
                    452: 	if (ref($$hash{$resultkey})  eq 'ARRAY' ) {
                    453: 	    &Apache::lonxml::debug("$resultkey ---- ".
                    454: 				   &showarray($$hash{$resultkey}));
                    455: 	} elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
                    456: 	    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
                    457: 	    &showhashsubset($$hash{$resultkey},'.');
                    458: 	} else {
                    459: 	    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145     albertel  460: 	}
                    461:     }
                    462:     &Apache::lonxml::debug("\n<br />restored values^</br>\n");
                    463:     return '';
1.41      albertel  464: }
                    465: 
                    466: sub setuppermissions {
1.145     albertel  467:     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
                    468:     my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
                    469:     if (! $viewgrades && 
                    470: 	exists($ENV{'request.course.sec'}) && 
                    471: 	$ENV{'request.course.sec'} !~ /^\s*$/) {
                    472: 	$viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.
1.127     matthew   473:                                                '/'.$ENV{'request.course.sec'});
1.145     albertel  474:     }
1.188     foxr      475:     $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.
1.185     albertel  476:     if ($Apache::lonhomework::browse eq 'F' && 
                    477: 	$ENV{'form.devalidatecourseresdata'} eq 'on') {
                    478: 	my (undef,$courseid) = &Apache::lonxml::whichuser();
                    479: 	&Apache::lonnet::devalidatecourseresdata($ENV{"course.$courseid.num"},
                    480: 					      $ENV{"course.$courseid.domain"});
                    481:     }
1.145     albertel  482:     return ''
1.41      albertel  483: }
                    484: 
                    485: sub setupheader {
1.120     albertel  486:     my $request=$_[0];
1.197     albertel  487:     &Apache::loncommon::content_type($request,'text/html');
1.120     albertel  488:     if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
                    489: 	&Apache::loncommon::no_cache($request);
                    490:     }
1.196     albertel  491: #    $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
                    492: #							  'lastrevisiondate'));
1.120     albertel  493:     $request->send_http_header;
                    494:     return OK if $request->header_only;
                    495:     return ''
1.41      albertel  496: }
1.35      albertel  497: 
1.47      albertel  498: sub handle_save_or_undo {
1.145     albertel  499:     my ($request,$problem,$result) = @_;
                    500:     my $file    = &Apache::lonnet::filelocation("",$request->uri);
                    501:     my $filebak =$file.".bak";
                    502:     my $filetmp =$file.".tmp";
                    503:     my $error=0;
1.156     albertel  504: 
                    505:     &Apache::lonnet::correct_line_ends($result);
1.52      albertel  506: 
1.150     albertel  507:     if ($ENV{'form.Undo'} eq &mt('undo')) {
1.145     albertel  508: 	my $error=0;
                    509: 	if (!copy($file,$filetmp)) { $error=1; }
                    510: 	if ((!$error) && (!copy($filebak,$file))) { $error=1; }
                    511: 	if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
                    512: 	if (!$error) {
1.171     albertel  513: 	    &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145     albertel  514: 	} else {
1.171     albertel  515: 	    &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
1.145     albertel  516: 	    $error=1;
                    517: 	}
1.52      albertel  518:     } else {
1.145     albertel  519: 	my $fs=Apache::File->new(">$filebak");
                    520: 	if (defined($fs)) {
                    521: 	    print $fs $$problem;
1.171     albertel  522: 	    &Apache::lonxml::info("<b>".&mt("Making Backup to").
                    523: 				  " $filebak</b>");
1.145     albertel  524: 	} else {
1.171     albertel  525: 	    &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145     albertel  526: 	    $error=2;
                    527: 	}
                    528: 	my $fh=Apache::File->new(">$file");
                    529: 	if (defined($fh)) {
                    530: 	    print $fh $$result;
1.171     albertel  531: 	    &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
                    532: 				  " $file</b>");
1.145     albertel  533: 	} else {
1.171     albertel  534: 	    &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
                    535: 				  &mt("Unable to write to")." $file</b></font>");
1.145     albertel  536: 	    $error|=4;
                    537: 	}
1.52      albertel  538:     }
1.145     albertel  539:     return $error;
1.64      albertel  540: }
                    541: 
1.101     albertel  542: sub analyze_header {
                    543:     my ($request) = @_;
1.183     albertel  544:     my $bodytag='<body bgcolor="#ffffff">';
                    545:     if ($ENV{'environment.remote'} eq 'off') {
                    546: 	$bodytag=&Apache::loncommon::bodytag();
                    547:     }
1.197     albertel  548:     my $html=&Apache::lonxml::xmlbegin();
                    549:     my $result.=$html.'
1.146     albertel  550:             <head><title>'.&mt("Analyzing a problem").'</title></head>
1.183     albertel  551:             '.$bodytag.&Apache::lonxml::message_location().'
1.101     albertel  552:             <form name="lonhomework" method="POST" action="'.
1.179     albertel  553: 	    &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'.
                    554: 	    &Apache::structuretags::remember_problem_state().'
1.146     albertel  555:             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
                    556:             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101     albertel  557:             <hr />
1.146     albertel  558:             <input type="submit" name="submit" value="'.&mt("View").'" />
1.101     albertel  559:             <hr />
                    560:             </form>';
1.171     albertel  561:     &Apache::lonxml::add_messages(\$result);
1.101     albertel  562:     $request->print($result);
                    563:     $request->rflush();
                    564: }
                    565: 
1.109     albertel  566: sub analyze_footer {
                    567:     my ($request) = @_;
                    568:     my $result='</body></html>';
                    569:     $request->print($result);
                    570:     $request->rflush();
                    571: }
                    572: 
1.74      albertel  573: sub analyze {
1.101     albertel  574:     my ($request,$file) = @_;
                    575:     &Apache::lonxml::debug("Analyze");
                    576:     my $result;
                    577:     my %overall;
                    578:     my %allparts;
                    579:     my $rndseed=$ENV{'form.rndseed'};
                    580:     &analyze_header($request);
1.114     albertel  581:     my %prog_state=
1.146     albertel  582: 	&Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
                    583: 					      &mt('Getting Problem Variants'),
1.175     albertel  584: 					      $ENV{'form.numtoanalyze'},
                    585: 					      'inline',undef);
1.102     albertel  586:     for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.114     albertel  587: 	&Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146     albertel  588: 						 &mt('last problem'));
1.182     albertel  589: 	if (&Apache::loncommon::connection_aborted($request)) { return; }
1.101     albertel  590: 	my $subresult=&Apache::lonnet::ssi($request->uri,
                    591: 					   ('grade_target' => 'analyze'),
1.130     albertel  592: 					   ('rndseed' => $i+$rndseed));
1.101     albertel  593: 	(my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
                    594: 	my %analyze=&Apache::lonnet::str2hash($subresult);
1.114     albertel  595: 	my @parts;
                    596: 	if (defined(@{ $analyze{'parts'} })) {
                    597: 	    @parts=@{ $analyze{'parts'} };
                    598: 	}
1.101     albertel  599: 	foreach my $part (@parts) {
                    600: 	    if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109     albertel  601: 	    if ($analyze{$part.'.type'} eq 'numericalresponse'	||
                    602: 		$analyze{$part.'.type'} eq 'stringresponse'	||
                    603: 		$analyze{$part.'.type'} eq 'formularesponse'   ) {
1.101     albertel  604: 		push( @{ $overall{$part.'.answer'} },
                    605: 		      [@{ $analyze{$part.'.answer'} }]);
                    606: 	    }
                    607: 	}
                    608:     }
1.114     albertel  609:     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146     albertel  610: 					  &mt('Analyzing Results'));
1.175     albertel  611:     $request->print('<hr />'.&mt('List of possible answers').': ');
1.134     albertel  612:     foreach my $part (sort(keys(%allparts))) {
1.109     albertel  613: 	if (defined(@{ $overall{$part.'.answer'} })) {
1.132     albertel  614: 	    my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.184     albertel  615: 	    $request->print('<table><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
1.130     albertel  616: 	    my %frequency;
1.109     albertel  617: 	    foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132     albertel  618: 		$frequency{join("\0",@{ $answer })}++;
1.130     albertel  619: 	    }
1.184     albertel  620: 	    $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'</th></tr>');
1.132     albertel  621: 	    foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
                    622: 		$request->print('<tr><td align="right">'.
                    623: 				join('</td><td align="right">',split("\0",$answer)).
1.130     albertel  624: 				'</td><td>('.$frequency{$answer}.
                    625: 				')</td></tr>');
1.109     albertel  626: 	    }
                    627: 	    $request->print('</table>');
                    628: 	} else {
1.162     albertel  629: 	    $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146     albertel  630: 			    &mt('is not analyzable at this time').'</p>');
1.101     albertel  631: 	}
                    632:     }
1.130     albertel  633:     if (scalar(keys(%allparts)) == 0 ) {
1.162     albertel  634: 	$request->print('<p>'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130     albertel  635:     }
1.114     albertel  636:     &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109     albertel  637:     &analyze_footer($request);
1.101     albertel  638:     &Apache::lonhomework::showhash(%overall);
                    639:     return $result;
1.74      albertel  640: }
                    641: 
1.64      albertel  642: sub editxmlmode {
1.145     albertel  643:     my ($request,$file) = @_;
                    644:     my $result;
                    645:     my $problem=&Apache::lonnet::getfile($file);
                    646:     if ($problem eq -1) {
1.146     albertel  647: 	&Apache::lonxml::error("<b> ".&mt('Unable to find').
                    648: 			       " <i>$file</i></b>");
1.145     albertel  649: 	$problem='';
                    650:     }
                    651:     if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
                    652: 	my $error=&handle_save_or_undo($request,\$problem,
                    653: 				       \$ENV{'form.editxmltext'});
                    654: 	if (!$error) { $problem=&Apache::lonnet::getfile($file); }
                    655:     }
1.80      albertel  656:     &Apache::lonhomework::showhashsubset(\%ENV,'^form');
1.150     albertel  657:     if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145     albertel  658: 	&Apache::lonhomework::showhashsubset(\%ENV,'^form');
                    659: 	$ENV{'form.problemmode'}='View';
                    660: 	&renderpage($request,$file);
                    661:     } else {
                    662: 	my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160     www       663: 	my $xml_help = '<table><tr><td>'.
                    664: 	    &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
                    665: 						    "Problem Editing Help").
                    666: 						    '</td><td>'.
1.178     albertel  667:        &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
                    668:                 '</td></tr></table>';
1.145     albertel  669: 	if ($cols > 80) { $cols = 80; }
                    670: 	if ($cols < 70) { $cols = 70; }
                    671: 	if ($rows < 20) { $rows = 20; }
1.183     albertel  672: 	my $bodytag='<body bgcolor="#ffffff">';
                    673: 	if ($ENV{'environment.remote'} eq 'off') {
                    674: 	    $bodytag=&Apache::loncommon::bodytag();
                    675: 	}
1.197     albertel  676: 	my $html=&Apache::lonxml::xmlbegin();
                    677: 	$result.=$html.$bodytag.&Apache::lonxml::message_location().'
1.64      albertel  678:             <form name="lonhomework" method="POST" action="'.
1.179     albertel  679: 	    &HTML::Entities::encode($ENV{'request.uri'},'<>&"').'">'.
                    680: 	    &Apache::structuretags::remember_problem_state().'
1.146     albertel  681:             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170     matthew   682:             <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
                    683:             <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.64      albertel  684:             <hr />
1.170     matthew   685:             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
                    686:             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
                    687:             <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64      albertel  688:             <hr />
1.110     albertel  689:             ' . $xml_help . '
1.199     albertel  690:             <textarea style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.172     albertel  691: 	    &HTML::Entities::encode($problem,'<>&"').'</textarea>
1.64      albertel  692:             </form></body></html>';
1.171     albertel  693: 	&Apache::lonxml::add_messages(\$result);
1.145     albertel  694: 	$request->print($result);
                    695:     }
                    696:     return '';
1.47      albertel  697: }
1.189     albertel  698: 
1.188     foxr      699: #
                    700: #    Render the page in whatever target desired.
                    701: #
1.41      albertel  702: sub renderpage {
1.145     albertel  703:     my ($request,$file) = @_;
1.52      albertel  704: 
1.145     albertel  705:     my (@targets) = &get_target();
1.161     albertel  706:     &Apache::lonhomework::showhashsubset(\%ENV,'form.');
1.145     albertel  707:     &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.171     albertel  708:     my $overall_result;
1.145     albertel  709:     foreach my $target (@targets) {
1.183     albertel  710: 	# FIXME need to do something intelligent when a problem goes
                    711:         # from viewable to not viewable due to map conditions
                    712: 	#&setuppermissions();
                    713: 	#if (   $Apache::lonhomework::browse ne '2'
                    714: 	#    && $Apache::lonhomework::browse ne 'F' ) {
                    715: 	#    $request->print(" You most likely shouldn't see me.");
                    716: 	#}
1.145     albertel  717: 	#my $t0 = [&gettimeofday()];
                    718: 	my $problem=&Apache::lonnet::getfile($file);
                    719: 	if ($problem eq -1) {
1.146     albertel  720: 	    &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");
1.145     albertel  721: 	    $problem='';
                    722: 	}
1.52      albertel  723: 
1.145     albertel  724: 	my %mystyle;
                    725: 	my $result = '';
                    726: 	if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
                    727: 	if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
                    728: 	if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
                    729: 
                    730: 	&Apache::lonxml::debug("Should be parsing now");
                    731: 	$result = &Apache::lonxml::xmlparse($request, $target, $problem,
                    732: 					    &setup_vars($target),%mystyle);
                    733: 	undef($Apache::lonhomework::parsing_a_problem);
                    734: 	#$request->print("Result follows:");
                    735: 	if ($target eq 'modified') {
                    736: 	    &handle_save_or_undo($request,\$problem,\$result);
                    737: 	} else {
                    738: 	    if ($target eq 'analyze') {
                    739: 		$result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
                    740: 		undef(%Apache::lonhomework::analyze);
                    741: 	    }
                    742: 	    #my $td=&tv_interval($t0);
                    743: 	    #if ( $Apache::lonxml::debug) {
                    744: 	    #$result =~ s:</body>::;
                    745: 	    #$result.="<br />Spent $td seconds processing target $target\n</body>";
                    746: 	    #}
1.171     albertel  747: #	    $request->print($result);
                    748: 	    $overall_result.=$result;
                    749: #	    $request->rflush();
1.145     albertel  750: 	}
                    751: 	#$request->print(":Result ends");
                    752: 	#my $td=&tv_interval($t0);
1.52      albertel  753:     }
1.171     albertel  754:     &Apache::lonxml::add_messages(\$overall_result);
                    755:     $request->print($overall_result);   
                    756:     $request->rflush();   
1.41      albertel  757: }
                    758: 
1.42      albertel  759: # with no arg it returns a HTML <option> list of the template titles
                    760: # with one arg it returns the filename associated with the arg passed
                    761: sub get_template_list {
1.145     albertel  762:     my ($namewanted,$extension) = @_;
                    763:     my $result;
                    764:     my @allnames;
                    765:     &Apache::lonxml::debug("Looking for :$extension:");
                    766:     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
                    767: 	my $name=&Apache::lonnet::metadata($file,'title');
                    768: 	if ($namewanted && ($name eq $namewanted)) {
                    769: 	    $result=$file;
                    770: 	    last;
                    771: 	} else {
                    772: 	    if ($name) { push (@allnames, $name); }
                    773: 	}
                    774:     }
                    775:     if (@allnames && !$result) {
1.146     albertel  776: 	$result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145     albertel  777: 	    join('</option><option>',sort(@allnames)).'</option>';
1.42      albertel  778:     }
1.145     albertel  779:     return $result;
1.42      albertel  780: }
                    781: 
                    782: sub newproblem {
1.65      matthew   783:     my ($request) = @_;
                    784:     my $extension=$request->uri;
                    785:     $extension=~s:^.*\.([\w]+)$:$1:;
                    786:     &Apache::lonxml::debug("Looking for :$extension:");
1.131     albertel  787:     my $templatelist=&get_template_list('',$extension);
1.85      albertel  788:     if ($ENV{'form.template'} &&
1.128     albertel  789: 	$ENV{'form.template'} ne "Select a $extension template") {
1.65      matthew   790: 	use File::Copy;
                    791: 	my $file = &get_template_list($ENV{'form.template'},$extension);
                    792: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
                    793: 	copy($file,$dest);
                    794: 	&renderpage($request,$dest);
1.131     albertel  795:     } elsif($ENV{'form.newfile'} && !$templatelist) {
                    796: 	# I don't like hard-coded filenames but for now, this will work.
                    797: 	use File::Copy;
                    798: 	my $templatefilename =
                    799: 	    $request->dir_config('lonIncludes').'/templates/blank.problem';
                    800: 	&Apache::lonxml::debug("$templatefilename");
                    801: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
                    802: 	copy($templatefilename,$dest);
                    803: 	&renderpage($request,$dest);
1.85      albertel  804:     } else {
1.176     albertel  805: 	my $url=&HTML::Entities::encode($request->uri,'<>&"');
                    806: 	my $shownurl=$url;	
1.157     albertel  807: 	$shownurl=~s-^/~-/priv/-;
1.65      matthew   808: 	my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128     albertel  809: 	my $errormsg;
                    810: 	if ($ENV{'form.newfile'}) {
1.146     albertel  811: 	    $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128     albertel  812: 	}
1.85      albertel  813: 	my $instructions;
1.186     albertel  814: 	my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,
                    815: 					($ENV{'environment.remote'} ne 'off'));
1.146     albertel  816: 	if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147     albertel  817: 	my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146     albertel  818: 			  'resource' => 'resource',
                    819: 			  'requested' => 'The requested file',
                    820: 			  'not exist' => 'currently does not exist',
                    821: 			  'createnew' => 'To create a new',
                    822: 			  'click' => 'click on the',
                    823: 			  'Create' => 'Create',
                    824: 			  'button' => 'button');
1.65      matthew   825: 	$request->print(<<ENDNEWPROBLEM);
1.159     www       826: $bodytag
1.148     albertel  827: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128     albertel  828: $errormsg
1.157     albertel  829: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105     www       830: <p>
1.146     albertel  831: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105     www       832: </p>
                    833: <p><form action="$url" method="POST">
1.42      albertel  834: ENDNEWPROBLEM
1.85      albertel  835: 	if (defined($templatelist)) {
                    836: 	    $request->print("<select name=\"template\">$templatelist</select>");
                    837: 	}
1.146     albertel  838: 	$request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.105     www       839: 	$request->print("</form></p></body>");
1.65      matthew   840:     }
                    841:     return '';
1.42      albertel  842: }
                    843: 
                    844: sub view_or_edit_menu {
1.145     albertel  845:     my ($request) = @_;
1.176     albertel  846:     my $url=&HTML::Entities::encode($request->uri,'<>&"');
1.147     albertel  847:     my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
1.146     albertel  848: 		      'view' => 'View',
                    849: 		      'Edit' => 'edit',
                    850: 		      'or' => 'or',
                    851: 		      'the problem' => 'the problem');
1.145     albertel  852:     $request->print(<<EDITMENU);
1.42      albertel  853: <body bgcolor="#FFFFFF">
                    854: <form action="$url" method="POST">
1.170     matthew   855: $lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="&lt{'view'}">
                    856: &lt{'or'} <input type="submit" name="problemmode" accesskey="e" value="&lt{'Edit'}">
1.146     albertel  857: &lt{'the problem'}.
1.42      albertel  858: </form>
                    859: </body>
                    860: EDITMENU
                    861: }
                    862: 
1.41      albertel  863: sub handler {
1.145     albertel  864:     #my $t0 = [&gettimeofday()];
                    865:     my $request=$_[0];
                    866:     
                    867:     $Apache::lonxml::debug=$ENV{'user.debug'};
                    868:     $ENV{'request.uri'}=$request->uri;
1.180     albertel  869:     &setuppermissions();
1.145     albertel  870:     # some times multiple problemmodes are submitted, need to select
                    871:     # the last one
1.193     albertel  872:     if ( defined($ENV{'form.problemmode'}) && ref($ENV{'form.problemmode'}) ) {
1.145     albertel  873: 	my $mode=$ENV{'form.problemmode'}->[-1];
                    874: 	undef $ENV{'form.problemmode'};
                    875: 	$ENV{'form.problemmode'}=$mode;
                    876:     }
1.193     albertel  877: 
1.145     albertel  878:     my $file=&Apache::lonnet::filelocation("",$request->uri);
                    879: 
                    880:     #check if we know where we are
                    881:     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
                    882: 	# if we are browsing we might not be able to know where we are
1.173     albertel  883: 	if ($Apache::lonhomework::browse ne 'F' && 
                    884: 	    $ENV{'request.state'} ne "construct") {
1.145     albertel  885: 	    #should know where we are, so ask
                    886: 	    if ( &Apache::lonnet::mod_perl_version() == 2 ) {
                    887: 		&Apache::lonnet::cleanenv();
                    888: 	    }
1.190     albertel  889: 	    &Apache::lonnet::logthis(&Apache::lonnet::mod_perl_version());
                    890: 	    $request->internal_redirect('/adm/ambiguous'); return OK;
1.145     albertel  891: 	}
                    892:     }
1.187     albertel  893:     if (&setupheader($request)) { return OK; }
1.193     albertel  894:     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
                    895:     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.145     albertel  896:     my ($symb) = &Apache::lonxml::whichuser();
                    897:     &Apache::lonxml::debug('symb is '.$symb);
                    898:     if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.150     albertel  899: 	if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') ||
                    900: 	    $ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
                    901: 	    $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.145     albertel  902: 	    my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
                    903: 	    &Apache::lonnet::tmpreset($symb,'',$domain,$name);
                    904: 	    &Apache::lonxml::debug("Attempt reset");
                    905: 	}
                    906:     }
                    907:     if ($ENV{'request.state'} eq "construct") {
                    908: 	if ( -e $file ) {
                    909: 	    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                    910: 						    ['problemmode']);
                    911: 	    if (!(defined $ENV{'form.problemmode'})) {
                    912: 		#first visit to problem in construction space
                    913: 		#&view_or_edit_menu($request);
                    914: 		$ENV{'form.problemmode'}='View';
                    915: 		&renderpage($request,$file);
1.190     albertel  916: 	    } elsif ($ENV{'form.problemmode'} eq &mt('EditXML') ||
1.191     albertel  917: 		     $ENV{'form.problemmode'} eq 'EditXML') {
1.145     albertel  918: 		&editxmlmode($request,$file);
1.150     albertel  919: 	    } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) {
1.145     albertel  920: 		&analyze($request,$file);
                    921: 	    } else {
                    922: 		&renderpage($request,$file);
                    923: 	    }
                    924: 	} else {
                    925: 	    # requested file doesn't exist in contruction space
                    926: 	    &newproblem($request);
                    927: 	}
                    928:     } else {
                    929: 	# just render the page normally outside of construction space
                    930: 	&Apache::lonxml::debug("not construct");
1.52      albertel  931: 	&renderpage($request,$file);
1.41      albertel  932:     }
1.145     albertel  933:     #my $td=&tv_interval($t0);
                    934:     #&Apache::lonxml::debug("Spent $td seconds processing");
                    935:     # &Apache::lonhomework::send_footer($request);
                    936:     # always turn off debug messages
                    937:     $Apache::lonxml::debug=0;
                    938:     return OK;
1.52      albertel  939: 
1.1       albertel  940: }
                    941: 
                    942: 1;
                    943: __END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>