'
+ .&mt("You are not authorized to create new $usertypetext{$usertype} users in this domain.")
+ .' '
+ .&mt('Please contact the [_1]helpdesk[_2] for assistance.'
+ ,'','')
+ .'
+//
+
+
+$new_user_create
+
+END_BLOCK
+
+ $output .= &Apache::lonhtmlcommon::start_pick_box().
+ &Apache::lonhtmlcommon::row_title($lt{'doma'}).
+ $domform.
+ &Apache::lonhtmlcommon::row_closure().
+ &Apache::lonhtmlcommon::row_title($lt{'usr'}).
+ $srchbysel.
+ $srchtypesel.
+ ''.
+ $srchinsel.
+ &Apache::lonhtmlcommon::row_closure(1).
+ &Apache::lonhtmlcommon::end_pick_box().
+ '
';
+ return $output;
+}
+
+sub user_rule_check {
+ my ($usershash,$checks,$alerts,$rulematch,$inst_results,$curr_rules,$got_rules) = @_;
+ my $response;
+ if (ref($usershash) eq 'HASH') {
+ foreach my $user (keys(%{$usershash})) {
+ my ($uname,$udom) = split(/:/,$user);
+ next if ($udom eq '' || $uname eq '');
+ my ($id,$newuser);
+ if (ref($usershash->{$user}) eq 'HASH') {
+ $newuser = $usershash->{$user}->{'newuser'};
+ $id = $usershash->{$user}->{'id'};
+ }
+ my $inst_response;
+ if (ref($checks) eq 'HASH') {
+ if (defined($checks->{'username'})) {
+ ($inst_response,%{$inst_results->{$user}}) =
+ &Apache::lonnet::get_instuser($udom,$uname);
+ } elsif (defined($checks->{'id'})) {
+ ($inst_response,%{$inst_results->{$user}}) =
+ &Apache::lonnet::get_instuser($udom,undef,$id);
+ }
+ } else {
+ ($inst_response,%{$inst_results->{$user}}) =
+ &Apache::lonnet::get_instuser($udom,$uname);
+ return;
+ }
+ if (!$got_rules->{$udom}) {
+ my %domconfig = &Apache::lonnet::get_dom('configuration',
+ ['usercreation'],$udom);
+ if (ref($domconfig{'usercreation'}) eq 'HASH') {
+ foreach my $item ('username','id') {
+ if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
+ $$curr_rules{$udom}{$item} =
+ $domconfig{'usercreation'}{$item.'_rule'};
+ }
+ }
+ }
+ $got_rules->{$udom} = 1;
+ }
+ foreach my $item (keys(%{$checks})) {
+ if (ref($$curr_rules{$udom}) eq 'HASH') {
+ if (ref($$curr_rules{$udom}{$item}) eq 'ARRAY') {
+ if (@{$$curr_rules{$udom}{$item}} > 0) {
+ my %rule_check = &Apache::lonnet::inst_rulecheck($udom,$uname,$id,$item,$$curr_rules{$udom}{$item});
+ foreach my $rule (@{$$curr_rules{$udom}{$item}}) {
+ if ($rule_check{$rule}) {
+ $$rulematch{$user}{$item} = $rule;
+ if ($inst_response eq 'ok') {
+ if (ref($inst_results) eq 'HASH') {
+ if (ref($inst_results->{$user}) eq 'HASH') {
+ if (keys(%{$inst_results->{$user}}) == 0) {
+ $$alerts{$item}{$udom}{$uname} = 1;
+ }
+ }
+ }
+ }
+ last;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ return;
+}
+
+sub user_rule_formats {
+ my ($domain,$domdesc,$curr_rules,$check) = @_;
+ my %text = (
+ 'username' => 'Usernames',
+ 'id' => 'IDs',
+ );
+ my $output;
+ my ($rules,$ruleorder) = &Apache::lonnet::inst_userrules($domain,$check);
+ if ((ref($rules) eq 'HASH') && (ref($ruleorder) eq 'ARRAY')) {
+ if (@{$ruleorder} > 0) {
+ $output = '
'.&mt("$text{$check} with the following format(s) may only be used for verified users at [_1]:",$domdesc).' ';
+ foreach my $rule (@{$ruleorder}) {
+ if (ref($curr_rules) eq 'ARRAY') {
+ if (grep(/^\Q$rule\E$/,@{$curr_rules})) {
+ if (ref($rules->{$rule}) eq 'HASH') {
+ $output .= '- '.$rules->{$rule}{'name'}.': '.
+ $rules->{$rule}{'desc'}.'
';
+ }
+ }
+ }
+ }
+ $output .= '
';
+ }
+ }
+ return $output;
+}
+
+sub instrule_disallow_msg {
+ my ($checkitem,$domdesc,$count,$mode) = @_;
+ my $response;
+ my %text = (
+ item => 'username',
+ items => 'usernames',
+ match => 'matches',
+ do => 'does',
+ action => 'a username',
+ one => 'one',
+ );
+ if ($count > 1) {
+ $text{'item'} = 'usernames';
+ $text{'match'} ='match';
+ $text{'do'} = 'do';
+ $text{'action'} = 'usernames',
+ $text{'one'} = 'ones';
+ }
+ if ($checkitem eq 'id') {
+ $text{'items'} = 'IDs';
+ $text{'item'} = 'ID';
+ $text{'action'} = 'an ID';
+ if ($count > 1) {
+ $text{'item'} = 'IDs';
+ $text{'action'} = 'IDs';
+ }
+ }
+ $response = &mt("The $text{'item'} you chose $text{'match'} the format of $text{'items'} defined for [_1], but the $text{'item'} $text{'do'} not exist in the institutional directory.",''.$domdesc.'').'
';
+ if ($mode eq 'upload') {
+ if ($checkitem eq 'username') {
+ $response .= &mt("You will need to modify your upload file so it will include $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");
+ } elsif ($checkitem eq 'id') {
+ $response .= &mt("Either upload a file which includes $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or when associating fields with data columns, omit an association for the Student/Employee ID field.");
+ }
+ } elsif ($mode eq 'selfcreate') {
+ if ($checkitem eq 'id') {
+ $response .= &mt("You must either choose $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or leave the ID field blank.");
+ }
+ } else {
+ if ($checkitem eq 'username') {
+ $response .= &mt("You must choose $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");
+ } elsif ($checkitem eq 'id') {
+ $response .= &mt("You must either choose $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or leave the ID field blank.");
+ }
+ }
+ return $response;
+}
+
+sub personal_data_fieldtitles {
+ my %fieldtitles = &Apache::lonlocal::texthash (
+ id => 'Student/Employee ID',
+ permanentemail => 'E-mail address',
+ lastname => 'Last Name',
+ firstname => 'First Name',
+ middlename => 'Middle Name',
+ generation => 'Generation',
+ gen => 'Generation',
+ inststatus => 'Affiliation',
+ );
+ return %fieldtitles;
+}
+
+sub sorted_inst_types {
+ my ($dom) = @_;
+ my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
+ my $othertitle = &mt('All users');
+ if ($env{'request.course.id'}) {
+ $othertitle = &mt('Any users');
+ }
+ my @types;
+ if (ref($order) eq 'ARRAY') {
+ @types = @{$order};
+ }
+ if (@types == 0) {
+ if (ref($usertypes) eq 'HASH') {
+ @types = sort(keys(%{$usertypes}));
+ }
+ }
+ if (keys(%{$usertypes}) > 0) {
+ $othertitle = &mt('Other users');
+ }
+ return ($othertitle,$usertypes,\@types);
+}
+
+sub get_institutional_codes {
+ my ($settings,$allcourses,$LC_code) = @_;
+# Get complete list of course sections to update
+ my @currsections = ();
+ my @currxlists = ();
+ my $coursecode = $$settings{'internal.coursecode'};
+
+ if ($$settings{'internal.sectionnums'} ne '') {
+ @currsections = split(/,/,$$settings{'internal.sectionnums'});
+ }
+
+ if ($$settings{'internal.crosslistings'} ne '') {
+ @currxlists = split(/,/,$$settings{'internal.crosslistings'});
+ }
+
+ if (@currxlists > 0) {
+ foreach (@currxlists) {
+ if (m/^([^:]+):(\w*)$/) {
+ unless (grep/^$1$/,@{$allcourses}) {
+ push @{$allcourses},$1;
+ $$LC_code{$1} = $2;
+ }
+ }
+ }
+ }
+
+ if (@currsections > 0) {
+ foreach (@currsections) {
+ if (m/^(\w+):(\w*)$/) {
+ my $sec = $coursecode.$1;
+ my $lc_sec = $2;
+ unless (grep/^$sec$/,@{$allcourses}) {
+ push @{$allcourses},$sec;
+ $$LC_code{$sec} = $lc_sec;
+ }
+ }
+ }
+ }
+ return;
+}
+
+=pod
+
+=head1 Slot Helpers
+
+=over 4
+
+=item * sorted_slots()
+
+Sorts an array of slot names in order of slot start time (earliest first).
+
+Inputs:
+
+=over 4
+
+slotsarr - Reference to array of unsorted slot names.
+
+slots - Reference to hash of hash, where outer hash keys are slot names.
+
+=back
+
+Returns:
+
+=over 4
+
+sorted - An array of slot names sorted by the start time of the slot.
+
+=back
+
+=back
+
+=cut
+
+
+sub sorted_slots {
+ my ($slotsarr,$slots) = @_;
+ my @sorted;
+ if ((ref($slotsarr) eq 'ARRAY') && (ref($slots) eq 'HASH')) {
+ @sorted =
+ sort {
+ if (ref($slots->{$a}) && ref($slots->{$b})) {
+ return $slots->{$a}{'starttime'} <=> $slots->{$b}{'starttime'}
+ }
+ if (ref($slots->{$a})) { return -1;}
+ if (ref($slots->{$b})) { return 1;}
+ return 0;
+ } @{$slotsarr};
+ }
+ return @sorted;
+}
+
+
+=pod
+
+=head1 HTTP Helpers
+
+=over 4
+
+=item * &get_unprocessed_cgi($query,$possible_names)
+
+Modify the %env hash to contain unprocessed CGI form parameters held in
+$query. The parameters listed in $possible_names (an array reference),
+will be set in $env{'form.name'} if they do not already exist.
+
+Typically called with $ENV{'QUERY_STRING'} as the first parameter.
+$possible_names is an ref to an array of form element names. As an example:
+get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
+will result in $env{'form.uname'} and $env{'form.udom'} being set.
+
+=cut
+
sub get_unprocessed_cgi {
- my ($query)= @_;
- foreach (split(/&/,$query)) {
- my ($name, $value) = split(/=/,$_);
- $value =~ tr/+/ /;
- $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
- if (!defined($ENV{'form.'.$name})) { $ENV{'form.'.$name}=$value; }
+ my ($query,$possible_names)= @_;
+ # $Apache::lonxml::debug=1;
+ foreach my $pair (split(/&/,$query)) {
+ my ($name, $value) = split(/=/,$pair);
+ $name = &unescape($name);
+ if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
+ $value =~ tr/+/ /;
+ $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+ unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
+ }
}
}
+=pod
+
+=item * &cacheheader()
+
+returns cache-controlling header code
+
+=cut
+
sub cacheheader {
- my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
- my $output .='
+ unless ($env{'request.method'} eq 'GET') { return ''; }
+ my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
+ my $output .='
';
- return $output;
+ return $output;
}
+=pod
+
+=item * &no_cache($r)
+
+specifies header code to not have cache
+
+=cut
+
sub no_cache {
- my ($r) = @_;
- my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
- $r->no_cache(1);
- $r->header_out("Pragma" => "no-cache");
- $r->header_out("Expires" => $date);
+ my ($r) = @_;
+ if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
+ $env{'request.method'} ne 'GET') { return ''; }
+ my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
+ $r->no_cache(1);
+ $r->header_out("Expires" => $date);
+ $r->header_out("Pragma" => "no-cache");
}
-1;
-__END__;
+sub content_type {
+ my ($r,$type,$charset) = @_;
+ if ($r) {
+ # Note that printout.pl calls this with undef for $r.
+ &no_cache($r);
+ }
+ if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
+ unless ($charset) {
+ $charset=&Apache::lonlocal::current_encoding;
+ }
+ if ($charset) { $type.='; charset='.$charset; }
+ if ($r) {
+ $r->content_type($type);
+ } else {
+ print("Content-type: $type\n\n");
+ }
+}
-=head1 NAME
+=pod
-Apache::loncommon - pile of common routines
+=item * &add_to_env($name,$value)
-=head1 SYNOPSIS
+adds $name to the %env hash with value
+$value, if $name already exists, the entry is converted to an array
+reference and $value is added to the array.
-Referenced by other mod_perl Apache modules.
+=cut
-Invocation:
- &Apache::loncommon::SUBROUTINENAME(ARGUMENTS);
+sub add_to_env {
+ my ($name,$value)=@_;
+ if (defined($env{$name})) {
+ if (ref($env{$name})) {
+ #already have multiple values
+ push(@{ $env{$name} },$value);
+ } else {
+ #first time seeing multiple values, convert hash entry to an arrayref
+ my $first=$env{$name};
+ undef($env{$name});
+ push(@{ $env{$name} },$first,$value);
+ }
+ } else {
+ $env{$name}=$value;
+ }
+}
-=head1 INTRODUCTION
+=pod
-Common collection of used subroutines. This collection helps remove
-redundancy from other modules and increase efficiency of memory usage.
+=item * &get_env_multiple($name)
-Current things done:
+gets $name from the %env hash, it seemlessly handles the cases where multiple
+values may be defined and end up as an array ref.
- Makes a table out of the previous homework attempts
- Inputs result_from_symbread, user, domain, course_id
- Reads in non-network-related .tab files
+returns an array of values
-This is part of the LearningOnline Network with CAPA project
-described at http://www.lon-capa.org.
+=cut
-=head1 HANDLER SUBROUTINE
+sub get_env_multiple {
+ my ($name) = @_;
+ my @values;
+ if (defined($env{$name})) {
+ # exists is it an array
+ if (ref($env{$name})) {
+ @values=@{ $env{$name} };
+ } else {
+ $values[0]=$env{$name};
+ }
+ }
+ return(@values);
+}
-There is no handler subroutine.
+sub ask_for_embedded_content {
+ my ($actionurl,$state,$allfiles,$codebase,$args)=@_;
+ my $upload_output = '
+ ';
+ return $upload_output;
+}
+
+sub upload_embedded {
+ my ($context,$dirpath,$uname,$udom,$dir_root,$url_root,$group,$disk_quota,
+ $current_disk_usage) = @_;
+ my $output;
+ for (my $i=0; $i<$env{'form.number_embedded_items'}; $i++) {
+ next if (!exists($env{'form.embedded_item_'.$i.'.filename'}));
+ my $orig_uploaded_filename =
+ $env{'form.embedded_item_'.$i.'.filename'};
+
+ $env{'form.embedded_orig_'.$i} =
+ &unescape($env{'form.embedded_orig_'.$i});
+ my ($path,$fname) =
+ ($env{'form.embedded_orig_'.$i} =~ m{(.*/)([^/]*)});
+ # no path, whole string is fname
+ if (!$fname) { $fname = $env{'form.embedded_orig_'.$i} };
+
+ $path = $env{'form.currentpath'}.$path;
+ $fname = &Apache::lonnet::clean_filename($fname);
+ # See if there is anything left
+ next if ($fname eq '');
+
+ # Check if file already exists as a file or directory.
+ my ($state,$msg);
+ if ($context eq 'portfolio') {
+ my $port_path = $dirpath;
+ if ($group ne '') {
+ $port_path = "groups/$group/$port_path";
+ }
+ ($state,$msg) = &check_for_upload($path,$fname,$group,'embedded_item_'.$i,
+ $dir_root,$port_path,$disk_quota,
+ $current_disk_usage,$uname,$udom);
+ if ($state eq 'will_exceed_quota'
+ || $state eq 'file_locked'
+ || $state eq 'file_exists' ) {
+ $output .= $msg;
+ next;
+ }
+ } elsif (($context eq 'author') || ($context eq 'testbank')) {
+ ($state,$msg) = &check_for_existing($path,$fname,'embedded_item_'.$i);
+ if ($state eq 'exists') {
+ $output .= $msg;
+ next;
+ }
+ }
+ # Check if extension is valid
+ if (($fname =~ /\.(\w+)$/) &&
+ (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
+ $output .= &mt('Invalid file extension ([_1]) - reserved for LONCAPA use - rename the file with a different extension and re-upload. ',$1);
+ next;
+ } elsif (($fname =~ /\.(\w+)$/) &&
+ (!defined(&Apache::loncommon::fileembstyle($1)))) {
+ $output .= &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1);
+ next;
+ } elsif ($fname=~/\.(\d+)\.(\w+)$/) {
+ $output .= &mt('File name not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2);
+ next;
+ }
+
+ $env{'form.embedded_item_'.$i.'.filename'}=$fname;
+ if ($context eq 'portfolio') {
+ my $result=
+ &Apache::lonnet::userfileupload('embedded_item_'.$i,'',
+ $dirpath.$path);
+ if ($result !~ m|^/uploaded/|) {
+ $output .= ''
+ .&mt('An error occurred ([_1]) while trying to upload [_2] for embedded element [_3].'
+ ,$result,$orig_uploaded_filename,$env{'form.embedded_orig_'.$i})
+ .'
';
+ next;
+ } else {
+ $output .= ''.&mt('Uploaded [_1]',''.
+ $path.$fname.'').'
';
+ }
+ } else {
+# Save the file
+ my $target = $env{'form.embedded_item_'.$i};
+ my $fullpath = $dir_root.$dirpath.'/'.$path;
+ my $dest = $fullpath.$fname;
+ my $url = $url_root.$dirpath.'/'.$path.$fname;
+ my @parts=split(/\//,$fullpath);
+ my $count;
+ my $filepath = $dir_root;
+ for ($count=4;$count<=$#parts;$count++) {
+ $filepath .= "/$parts[$count]";
+ if ((-e $filepath)!=1) {
+ mkdir($filepath,0770);
+ }
+ }
+ my $fh;
+ if (!open($fh,'>'.$dest)) {
+ &Apache::lonnet::logthis('Failed to create '.$dest);
+ $output .= ''.
+ &mt('An error occurred while trying to upload [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+ '
';
+ } else {
+ if (!print $fh $env{'form.embedded_item_'.$i}) {
+ &Apache::lonnet::logthis('Failed to write to '.$dest);
+ $output .= ''.
+ &mt('An error occurred while writing the file [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+ '
';
+ } else {
+ if ($context eq 'testbank') {
+ $output .= &mt('Embedded file uploaded successfully:').
+ ' '.
+ $orig_uploaded_filename.'
';
+ } else {
+ $output .= ''.
+ &mt('View embedded file: [_1]',''.
+ $orig_uploaded_filename.'').'
';
+ }
+ }
+ close($fh);
+ }
+ }
+ }
+ return $output;
+}
+
+sub check_for_existing {
+ my ($path,$fname,$element) = @_;
+ my ($state,$msg);
+ if (-d $path.'/'.$fname) {
+ $state = 'exists';
+ $msg = &mt('Unable to upload [_1]. A directory by that name was found in [_2].',''.$fname.'',$path);
+ } elsif (-e $path.'/'.$fname) {
+ $state = 'exists';
+ $msg = &mt('Unable to upload [_1]. A file by that name was found in [_2].',''.$fname.'',$path);
+ }
+ if ($state eq 'exists') {
+ $msg = ''.$msg.'
';
+ }
+ return ($state,$msg);
+}
+
+sub check_for_upload {
+ my ($path,$fname,$group,$element,$portfolio_root,$port_path,
+ $disk_quota,$current_disk_usage,$uname,$udom) = @_;
+ my $filesize = (length($env{'form.'.$element})) / 1000; #express in k (1024?)
+ my $getpropath = 1;
+ my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$path,$udom,$uname,
+ $getpropath);
+ my $found_file = 0;
+ my $locked_file = 0;
+ foreach my $line (@dir_list) {
+ my ($file_name)=split(/\&/,$line,2);
+ if ($file_name eq $fname){
+ $file_name = $path.$file_name;
+ if ($group ne '') {
+ $file_name = $group.$file_name;
+ }
+ $found_file = 1;
+ if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
+ $locked_file = 1;
+ }
+ }
+ }
+ if (($current_disk_usage + $filesize) > $disk_quota){
+ my $msg = ''.
+ &mt('Unable to upload [_1]. (size = [_2] kilobytes). Disk quota will be exceeded.',''.$fname.'',$filesize).''.
+ '
'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',$disk_quota,$current_disk_usage);
+ return ('will_exceed_quota',$msg);
+ } elsif ($found_file) {
+ if ($locked_file) {
+ my $msg = '';
+ $msg .= &mt('Unable to upload [_1]. A locked file by that name was found in [_2].',''.$fname.'',''.$port_path.$env{'form.currentpath'}.'');
+ $msg .= '
';
+ $msg .= &mt('You will be able to rename or delete existing [_1] after a grade has been assigned.',''.$fname.'');
+ return ('file_locked',$msg);
+ } else {
+ my $msg = '';
+ $msg .= &mt('Unable to upload [_1]. A file by that name was found in [_2].',''.$fname.'',$port_path.$env{'form.currentpath'});
+ $msg .= '';
+ $msg .= '
';
+ $msg .= &mt('To upload, rename or delete existing [_1] in [_2].',''.$fname.'', $port_path.$env{'form.currentpath'});
+ return ('file_exists',$msg);
+ }
+ }
+}
-=head1 OTHER SUBROUTINES
+
+=pod
+
+=back
+
+=head1 CSV Upload/Handling functions
=over 4
-=item *
+=item * &upfile_store($r)
-BEGIN() : initialize values from language.tab, copyright.tab, filetypes.tab,
-and filecategories.tab.
+Store uploaded file, $r should be the HTTP Request object,
+needs $env{'form.upfile'}
+returns $datatoken to be put into hidden field
-=item *
+=cut
-languageids() : returns list of all language ids
+sub upfile_store {
+ my $r=shift;
+ $env{'form.upfile'}=~s/\r/\n/gs;
+ $env{'form.upfile'}=~s/\f/\n/gs;
+ $env{'form.upfile'}=~s/\n+/\n/gs;
+ $env{'form.upfile'}=~s/\n+$//gs;
-=item *
+ my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
+ '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
+ {
+ my $datafile = $r->dir_config('lonDaemons').
+ '/tmp/'.$datatoken.'.tmp';
+ if ( open(my $fh,">$datafile") ) {
+ print $fh $env{'form.upfile'};
+ close($fh);
+ }
+ }
+ return $datatoken;
+}
-languagedescription() : returns description of a specified language id
+=pod
-=item *
+=item * &load_tmp_file($r)
-copyrightids() : returns list of all copyrights
+Load uploaded file from tmp, $r should be the HTTP Request object,
+needs $env{'form.datatoken'},
+sets $env{'form.upfile'} to the contents of the file
-=item *
+=cut
-copyrightdescription() : returns description of a specified copyright id
+sub load_tmp_file {
+ my $r=shift;
+ my @studentdata=();
+ {
+ my $studentfile = $r->dir_config('lonDaemons').
+ '/tmp/'.$env{'form.datatoken'}.'.tmp';
+ if ( open(my $fh,"<$studentfile") ) {
+ @studentdata=<$fh>;
+ close($fh);
+ }
+ }
+ $env{'form.upfile'}=join('',@studentdata);
+}
-=item *
+=pod
-filecategories() : returns list of all file categories
+=item * &upfile_record_sep()
-=item *
+Separate uploaded file into records
+returns array of records,
+needs $env{'form.upfile'} and $env{'form.upfiletype'}
-filecategorytypes() : returns list of file types belonging to a given file
-category
+=cut
-=item *
+sub upfile_record_sep {
+ if ($env{'form.upfiletype'} eq 'xml') {
+ } else {
+ my @records;
+ foreach my $line (split(/\n/,$env{'form.upfile'})) {
+ if ($line=~/^\s*$/) { next; }
+ push(@records,$line);
+ }
+ return @records;
+ }
+}
-fileembstyle() : returns embedding style for a specified file type
+=pod
-=item *
+=item * &record_sep($record)
-filedescription() : returns description for a specified file type
+Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
-=item *
+=cut
-filedescriptionex() : returns description for a specified file type with
-extra formatting
+sub takeleft {
+ my $index=shift;
+ return substr('0000'.$index,-4,4);
+}
+
+sub record_sep {
+ my $record=shift;
+ my %components=();
+ if ($env{'form.upfiletype'} eq 'xml') {
+ } elsif ($env{'form.upfiletype'} eq 'space') {
+ my $i=0;
+ foreach my $field (split(/\s+/,$record)) {
+ $field=~s/^(\"|\')//;
+ $field=~s/(\"|\')$//;
+ $components{&takeleft($i)}=$field;
+ $i++;
+ }
+ } elsif ($env{'form.upfiletype'} eq 'tab') {
+ my $i=0;
+ foreach my $field (split(/\t/,$record)) {
+ $field=~s/^(\"|\')//;
+ $field=~s/(\"|\')$//;
+ $components{&takeleft($i)}=$field;
+ $i++;
+ }
+ } else {
+ my $separator=',';
+ if ($env{'form.upfiletype'} eq 'semisv') {
+ $separator=';';
+ }
+ my $i=0;
+# the character we are looking for to indicate the end of a quote or a record
+ my $looking_for=$separator;
+# do not add the characters to the fields
+ my $ignore=0;
+# we just encountered a separator (or the beginning of the record)
+ my $just_found_separator=1;
+# store the field we are working on here
+ my $field='';
+# work our way through all characters in record
+ foreach my $character ($record=~/(.)/g) {
+ if ($character eq $looking_for) {
+ if ($character ne $separator) {
+# Found the end of a quote, again looking for separator
+ $looking_for=$separator;
+ $ignore=1;
+ } else {
+# Found a separator, store away what we got
+ $components{&takeleft($i)}=$field;
+ $i++;
+ $just_found_separator=1;
+ $ignore=0;
+ $field='';
+ }
+ next;
+ }
+# single or double quotation marks after a separator indicate beginning of a quote
+# we are now looking for the end of the quote and need to ignore separators
+ if ((($character eq '"') || ($character eq "'")) && ($just_found_separator)) {
+ $looking_for=$character;
+ next;
+ }
+# ignore would be true after we reached the end of a quote
+ if ($ignore) { next; }
+ if (($just_found_separator) && ($character=~/\s/)) { next; }
+ $field.=$character;
+ $just_found_separator=0;
+ }
+# catch the very last entry, since we never encountered the separator
+ $components{&takeleft($i)}=$field;
+ }
+ return %components;
+}
+
+######################################################
+######################################################
-=item *
+=pod
-get_previous_attempt() : return string with previous attempt on problem
+=item * &upfile_select_html()
-=item *
+Return HTML code to select a file from the users machine and specify
+the file type.
-get_student_view() : show a snapshot of what student was looking at
+=cut
-=item *
+######################################################
+######################################################
+sub upfile_select_html {
+ my %Types = (
+ csv => &mt('CSV (comma separated values, spreadsheet)'),
+ semisv => &mt('Semicolon separated values'),
+ space => &mt('Space separated'),
+ tab => &mt('Tabulator separated'),
+# xml => &mt('HTML/XML'),
+ );
+ my $Str = ''.
+ '
'.&mt('Type').': \n";
+ return $Str;
+}
-get_student_answers() : show a snapshot of how student was answering problem
+sub get_samples {
+ my ($records,$toget) = @_;
+ my @samples=({});
+ my $got=0;
+ foreach my $rec (@$records) {
+ my %temp = &record_sep($rec);
+ if (! grep(/\S/, values(%temp))) { next; }
+ if (%temp) {
+ $samples[$got]=\%temp;
+ $got++;
+ if ($got == $toget) { last; }
+ }
+ }
+ return \@samples;
+}
-=item *
+######################################################
+######################################################
-get_unprocessed_cgi() : get unparsed CGI parameters
+=pod
-=item *
+=item * &csv_print_samples($r,$records)
-cacheheader() : returns cache-controlling header code
+Prints a table of sample values from each column uploaded $r is an
+Apache Request ref, $records is an arrayref from
+&Apache::loncommon::upfile_record_sep
-=item *
+=cut
+
+######################################################
+######################################################
+sub csv_print_samples {
+ my ($r,$records) = @_;
+ my $samples = &get_samples($records,5);
+
+ $r->print(&mt('Samples').'
'.&start_data_table().
+ &start_data_table_header_row());
+ foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
+ $r->print(''.&mt('Column [_1]',($sample+1)).' | '); }
+ $r->print(&end_data_table_header_row());
+ foreach my $hash (@$samples) {
+ $r->print(&start_data_table_row());
+ foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
+ $r->print('');
+ if (defined($$hash{$sample})) { $r->print($$hash{$sample}); }
+ $r->print(' | ');
+ }
+ $r->print(&end_data_table_row());
+ }
+ $r->print(&end_data_table().'
'."\n");
+}
+
+######################################################
+######################################################
+
+=pod
+
+=item * &csv_print_select_table($r,$records,$d)
+
+Prints a table to create associations between values and table columns.
+
+$r is an Apache Request ref,
+$records is an arrayref from &Apache::loncommon::upfile_record_sep,
+$d is an array of 2 element arrays (internal name, displayed name,defaultcol)
+
+=cut
+
+######################################################
+######################################################
+sub csv_print_select_table {
+ my ($r,$records,$d) = @_;
+ my $i=0;
+ my $samples = &get_samples($records,1);
+ $r->print(&mt('Associate columns with student attributes.')."\n".
+ &start_data_table().&start_data_table_header_row().
+ ''.&mt('Attribute').' | '.
+ ''.&mt('Column').' | '.
+ &end_data_table_header_row()."\n");
+ foreach my $array_ref (@$d) {
+ my ($value,$display,$defaultcol)=@{ $array_ref };
+ $r->print(&start_data_table_row().''.$display.' | ');
+
+ $r->print(' | '.&end_data_table_row()."\n");
+ $i++;
+ }
+ $r->print(&end_data_table());
+ $i--;
+ return $i;
+}
+
+######################################################
+######################################################
+
+=pod
+
+=item * &csv_samples_select_table($r,$records,$d)
+
+Prints a table of sample values from the upload and can make associate samples to internal names.
+
+$r is an Apache Request ref,
+$records is an arrayref from &Apache::loncommon::upfile_record_sep,
+$d is an array of 2 element arrays (internal name, displayed name)
+
+=cut
-nocache() : specifies header code to not have cache
+######################################################
+######################################################
+sub csv_samples_select_table {
+ my ($r,$records,$d) = @_;
+ my $i=0;
+ #
+ my $max_samples = 5;
+ my $samples = &get_samples($records,$max_samples);
+ $r->print(&start_data_table().
+ &start_data_table_header_row().''.
+ &mt('Field').' | '.&mt('Samples').' | '.
+ &end_data_table_header_row());
+
+ foreach my $key (sort(keys(%{ $samples->[0] }))) {
+ $r->print(&start_data_table_row().' | ');
+ foreach my $line (0..($max_samples-1)) {
+ if (defined($samples->[$line]{$key})) {
+ $r->print($samples->[$line]{$key}." \n");
+ }
+ }
+ $r->print(' | '.&end_data_table_row());
+ $i++;
+ }
+ $r->print(&end_data_table());
+ $i--;
+ return($i);
+}
+
+######################################################
+######################################################
+
+=pod
+
+=item * &clean_excel_name($name)
+
+Returns a replacement for $name which does not contain any illegal characters.
+
+=cut
+
+######################################################
+######################################################
+sub clean_excel_name {
+ my ($name) = @_;
+ $name =~ s/[:\*\?\/\\]//g;
+ if (length($name) > 31) {
+ $name = substr($name,0,31);
+ }
+ return $name;
+}
+
+=pod
+
+=item * &check_if_partid_hidden($id,$symb,$udom,$uname)
+
+Returns either 1 or undef
+
+1 if the part is to be hidden, undef if it is to be shown
+
+Arguments are:
+
+$id the id of the part to be checked
+$symb, optional the symb of the resource to check
+$udom, optional the domain of the user to check for
+$uname, optional the username of the user to check for
+
+=cut
+
+sub check_if_partid_hidden {
+ my ($id,$symb,$udom,$uname) = @_;
+ my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
+ $symb,$udom,$uname);
+ my $truth=1;
+ #if the string starts with !, then the list is the list to show not hide
+ if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
+ my @hiddenlist=split(/,/,$hiddenparts);
+ foreach my $checkid (@hiddenlist) {
+ if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
+ }
+ return !$truth;
+}
+
+
+############################################################
+############################################################
+
+=pod
+
+=back
+
+=head1 cgi-bin script and graphing routines
+
+=over 4
+
+=item * &get_cgi_id()
+
+Inputs: none
+
+Returns an id which can be used to pass environment variables
+to various cgi-bin scripts. These environment variables will
+be removed from the users environment after a given time by
+the routine &Apache::lonnet::transfer_profile_to_env.
+
+=cut
+
+############################################################
+############################################################
+my $uniq=0;
+sub get_cgi_id {
+ $uniq=($uniq+1)%100000;
+ return (time.'_'.$$.'_'.$uniq);
+}
+
+############################################################
+############################################################
+
+=pod
+
+=item * &DrawBarGraph()
+
+Facilitates the plotting of data in a (stacked) bar graph.
+Puts plot definition data into the users environment in order for
+graph.png to plot it. Returns an tag for the plot.
+The bars on the plot are labeled '1','2',...,'n'.
+
+Inputs:
+
+=over 4
+
+=item $Title: string, the title of the plot
+
+=item $xlabel: string, text describing the X-axis of the plot
+
+=item $ylabel: string, text describing the Y-axis of the plot
+
+=item $Max: scalar, the maximum Y value to use in the plot
+If $Max is < any data point, the graph will not be rendered.
+
+=item $colors: array ref holding the colors to be used for the data sets when
+they are plotted. If undefined, default values will be used.
+
+=item $labels: array ref holding the labels to use on the x-axis for the bars.
+
+=item @Values: An array of array references. Each array reference holds data
+to be plotted in a stacked bar chart.
+
+=item If the final element of @Values is a hash reference the key/value
+pairs will be added to the graph definition.
+
+=back
+
+Returns:
+
+An tag which references graph.png and the appropriate identifying
+information for the plot.
+
+=cut
+
+############################################################
+############################################################
+sub DrawBarGraph {
+ my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
+ #
+ if (! defined($colors)) {
+ $colors = ['#33ff00',
+ '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
+ '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
+ ];
+ }
+ my $extra_settings = {};
+ if (ref($Values[-1]) eq 'HASH') {
+ $extra_settings = pop(@Values);
+ }
+ #
+ my $identifier = &get_cgi_id();
+ my $id = 'cgi.'.$identifier;
+ if (! @Values || ref($Values[0]) ne 'ARRAY') {
+ return '';
+ }
+ #
+ my @Labels;
+ if (defined($labels)) {
+ @Labels = @$labels;
+ } else {
+ for (my $i=0;$i<@{$Values[0]};$i++) {
+ push (@Labels,$i+1);
+ }
+ }
+ #
+ my $NumBars = scalar(@{$Values[0]});
+ if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
+ my %ValuesHash;
+ my $NumSets=1;
+ foreach my $array (@Values) {
+ next if (! ref($array));
+ $ValuesHash{$id.'.data.'.$NumSets++} =
+ join(',',@$array);
+ }
+ #
+ my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
+ if ($NumBars < 3) {
+ $width = 120+$NumBars*32;
+ $xskip = 1;
+ $bar_width = 30;
+ } elsif ($NumBars < 5) {
+ $width = 120+$NumBars*20;
+ $xskip = 1;
+ $bar_width = 20;
+ } elsif ($NumBars < 10) {
+ $width = 120+$NumBars*15;
+ $xskip = 1;
+ $bar_width = 15;
+ } elsif ($NumBars <= 25) {
+ $width = 120+$NumBars*11;
+ $xskip = 5;
+ $bar_width = 8;
+ } elsif ($NumBars <= 50) {
+ $width = 120+$NumBars*8;
+ $xskip = 5;
+ $bar_width = 4;
+ } else {
+ $width = 120+$NumBars*8;
+ $xskip = 5;
+ $bar_width = 4;
+ }
+ #
+ $Max = 1 if ($Max < 1);
+ if ( int($Max) < $Max ) {
+ $Max++;
+ $Max = int($Max);
+ }
+ $Title = '' if (! defined($Title));
+ $xlabel = '' if (! defined($xlabel));
+ $ylabel = '' if (! defined($ylabel));
+ $ValuesHash{$id.'.title'} = &escape($Title);
+ $ValuesHash{$id.'.xlabel'} = &escape($xlabel);
+ $ValuesHash{$id.'.ylabel'} = &escape($ylabel);
+ $ValuesHash{$id.'.y_max_value'} = $Max;
+ $ValuesHash{$id.'.NumBars'} = $NumBars;
+ $ValuesHash{$id.'.NumSets'} = $NumSets;
+ $ValuesHash{$id.'.PlotType'} = 'bar';
+ $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
+ $ValuesHash{$id.'.height'} = $height;
+ $ValuesHash{$id.'.width'} = $width;
+ $ValuesHash{$id.'.xskip'} = $xskip;
+ $ValuesHash{$id.'.bar_width'} = $bar_width;
+ $ValuesHash{$id.'.labels'} = join(',',@Labels);
+ #
+ # Deal with other parameters
+ while (my ($key,$value) = each(%$extra_settings)) {
+ $ValuesHash{$id.'.'.$key} = $value;
+ }
+ #
+ &Apache::lonnet::appenv(\%ValuesHash);
+ return '';
+}
+
+############################################################
+############################################################
+
+=pod
+
+=item * &DrawXYGraph()
+
+Facilitates the plotting of data in an XY graph.
+Puts plot definition data into the users environment in order for
+graph.png to plot it. Returns an tag for the plot.
+
+Inputs:
+
+=over 4
+
+=item $Title: string, the title of the plot
+
+=item $xlabel: string, text describing the X-axis of the plot
+
+=item $ylabel: string, text describing the Y-axis of the plot
+
+=item $Max: scalar, the maximum Y value to use in the plot
+If $Max is < any data point, the graph will not be rendered.
+
+=item $colors: Array ref containing the hex color codes for the data to be
+plotted in. If undefined, default values will be used.
+
+=item $Xlabels: Array ref containing the labels to be used for the X-axis.
+
+=item $Ydata: Array ref containing Array refs.
+Each of the contained arrays will be plotted as a separate curve.
+
+=item %Values: hash indicating or overriding any default values which are
+passed to graph.png.
+Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
+
+=back
+
+Returns:
+
+An tag which references graph.png and the appropriate identifying
+information for the plot.
+
+=cut
+
+############################################################
+############################################################
+sub DrawXYGraph {
+ my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
+ #
+ # Create the identifier for the graph
+ my $identifier = &get_cgi_id();
+ my $id = 'cgi.'.$identifier;
+ #
+ $Title = '' if (! defined($Title));
+ $xlabel = '' if (! defined($xlabel));
+ $ylabel = '' if (! defined($ylabel));
+ my %ValuesHash =
+ (
+ $id.'.title' => &escape($Title),
+ $id.'.xlabel' => &escape($xlabel),
+ $id.'.ylabel' => &escape($ylabel),
+ $id.'.y_max_value'=> $Max,
+ $id.'.labels' => join(',',@$Xlabels),
+ $id.'.PlotType' => 'XY',
+ );
+ #
+ if (defined($colors) && ref($colors) eq 'ARRAY') {
+ $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
+ }
+ #
+ if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
+ return '';
+ }
+ my $NumSets=1;
+ foreach my $array (@{$Ydata}){
+ next if (! ref($array));
+ $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
+ }
+ $ValuesHash{$id.'.NumSets'} = $NumSets-1;
+ #
+ # Deal with other parameters
+ while (my ($key,$value) = each(%Values)) {
+ $ValuesHash{$id.'.'.$key} = $value;
+ }
+ #
+ &Apache::lonnet::appenv(\%ValuesHash);
+ return '';
+}
+
+############################################################
+############################################################
+
+=pod
+
+=item * &DrawXYYGraph()
+
+Facilitates the plotting of data in an XY graph with two Y axes.
+Puts plot definition data into the users environment in order for
+graph.png to plot it. Returns an tag for the plot.
+
+Inputs:
+
+=over 4
+
+=item $Title: string, the title of the plot
+
+=item $xlabel: string, text describing the X-axis of the plot
+
+=item $ylabel: string, text describing the Y-axis of the plot
+
+=item $colors: Array ref containing the hex color codes for the data to be
+plotted in. If undefined, default values will be used.
+
+=item $Xlabels: Array ref containing the labels to be used for the X-axis.
+
+=item $Ydata1: The first data set
+
+=item $Min1: The minimum value of the left Y-axis
+
+=item $Max1: The maximum value of the left Y-axis
+
+=item $Ydata2: The second data set
+
+=item $Min2: The minimum value of the right Y-axis
+
+=item $Max2: The maximum value of the left Y-axis
+
+=item %Values: hash indicating or overriding any default values which are
+passed to graph.png.
+Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
=back
+Returns:
+
+An tag which references graph.png and the appropriate identifying
+information for the plot.
+
=cut
+
+############################################################
+############################################################
+sub DrawXYYGraph {
+ my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
+ $Ydata2,$Min2,$Max2,%Values)=@_;
+ #
+ # Create the identifier for the graph
+ my $identifier = &get_cgi_id();
+ my $id = 'cgi.'.$identifier;
+ #
+ $Title = '' if (! defined($Title));
+ $xlabel = '' if (! defined($xlabel));
+ $ylabel = '' if (! defined($ylabel));
+ my %ValuesHash =
+ (
+ $id.'.title' => &escape($Title),
+ $id.'.xlabel' => &escape($xlabel),
+ $id.'.ylabel' => &escape($ylabel),
+ $id.'.labels' => join(',',@$Xlabels),
+ $id.'.PlotType' => 'XY',
+ $id.'.NumSets' => 2,
+ $id.'.two_axes' => 1,
+ $id.'.y1_max_value' => $Max1,
+ $id.'.y1_min_value' => $Min1,
+ $id.'.y2_max_value' => $Max2,
+ $id.'.y2_min_value' => $Min2,
+ );
+ #
+ if (defined($colors) && ref($colors) eq 'ARRAY') {
+ $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
+ }
+ #
+ if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
+ ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
+ return '';
+ }
+ my $NumSets=1;
+ foreach my $array ($Ydata1,$Ydata2){
+ next if (! ref($array));
+ $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
+ }
+ #
+ # Deal with other parameters
+ while (my ($key,$value) = each(%Values)) {
+ $ValuesHash{$id.'.'.$key} = $value;
+ }
+ #
+ &Apache::lonnet::appenv(\%ValuesHash);
+ return '';
+}
+
+############################################################
+############################################################
+
+=pod
+
+=back
+
+=head1 Statistics helper routines?
+
+Bad place for them but what the hell.
+
+=over 4
+
+=item * &chartlink()
+
+Returns a link to the chart for a specific student.
+
+Inputs:
+
+=over 4
+
+=item $linktext: The text of the link
+
+=item $sname: The students username
+
+=item $sdomain: The students domain
+
+=back
+
+=back
+
+=cut
+
+############################################################
+############################################################
+sub chartlink {
+ my ($linktext, $sname, $sdomain) = @_;
+ my $link = ''.$linktext.'';
+}
+
+#######################################################
+#######################################################
+
+=pod
+
+=head1 Course Environment Routines
+
+=over 4
+
+=item * &restore_course_settings()
+
+=item * &store_course_settings()
+
+Restores/Store indicated form parameters from the course environment.
+Will not overwrite existing values of the form parameters.
+
+Inputs:
+a scalar describing the data (e.g. 'chart', 'problem_analysis')
+
+a hash ref describing the data to be stored. For example:
+
+%Save_Parameters = ('Status' => 'scalar',
+ 'chartoutputmode' => 'scalar',
+ 'chartoutputdata' => 'scalar',
+ 'Section' => 'array',
+ 'Group' => 'array',
+ 'StudentData' => 'array',
+ 'Maps' => 'array');
+
+Returns: both routines return nothing
+
+=back
+
+=cut
+
+#######################################################
+#######################################################
+sub store_course_settings {
+ return &store_settings($env{'request.course.id'},@_);
+}
+
+sub store_settings {
+ # save to the environment
+ # appenv the same items, just to be safe
+ my $udom = $env{'user.domain'};
+ my $uname = $env{'user.name'};
+ my ($context,$prefix,$Settings) = @_;
+ my %SaveHash;
+ my %AppHash;
+ while (my ($setting,$type) = each(%$Settings)) {
+ my $basename = join('.','internal',$context,$prefix,$setting);
+ my $envname = 'environment.'.$basename;
+ if (exists($env{'form.'.$setting})) {
+ # Save this value away
+ if ($type eq 'scalar' &&
+ (! exists($env{$envname}) ||
+ $env{$envname} ne $env{'form.'.$setting})) {
+ $SaveHash{$basename} = $env{'form.'.$setting};
+ $AppHash{$envname} = $env{'form.'.$setting};
+ } elsif ($type eq 'array') {
+ my $stored_form;
+ if (ref($env{'form.'.$setting})) {
+ $stored_form = join(',',
+ map {
+ &escape($_);
+ } sort(@{$env{'form.'.$setting}}));
+ } else {
+ $stored_form =
+ &escape($env{'form.'.$setting});
+ }
+ # Determine if the array contents are the same.
+ if ($stored_form ne $env{$envname}) {
+ $SaveHash{$basename} = $stored_form;
+ $AppHash{$envname} = $stored_form;
+ }
+ }
+ }
+ }
+ my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
+ $udom,$uname);
+ if ($put_result !~ /^(ok|delayed)/) {
+ &Apache::lonnet::logthis('unable to save form parameters, '.
+ 'got error:'.$put_result);
+ }
+ # Make sure these settings stick around in this session, too
+ &Apache::lonnet::appenv(\%AppHash);
+ return;
+}
+
+sub restore_course_settings {
+ return &restore_settings($env{'request.course.id'},@_);
+}
+
+sub restore_settings {
+ my ($context,$prefix,$Settings) = @_;
+ while (my ($setting,$type) = each(%$Settings)) {
+ next if (exists($env{'form.'.$setting}));
+ my $envname = 'environment.internal.'.$context.'.'.$prefix.
+ '.'.$setting;
+ if (exists($env{$envname})) {
+ if ($type eq 'scalar') {
+ $env{'form.'.$setting} = $env{$envname};
+ } elsif ($type eq 'array') {
+ $env{'form.'.$setting} = [
+ map {
+ &unescape($_);
+ } split(',',$env{$envname})
+ ];
+ }
+ }
+ }
+}
+
+#######################################################
+#######################################################
+
+=pod
+
+=head1 Domain E-mail Routines
+
+=over 4
+
+=item * &build_recipient_list()
+
+Build recipient lists for five types of e-mail:
+(a) Error Reports, (b) Package Updates, (c) lonstatus warnings/errors
+(d) Help requests, (e) Course requests needing approval, generated by
+lonerrorhandler.pm, CHECKRPMS, loncron, lonsupportreq.pm and
+loncoursequeueadmin.pm respectively.
+
+Inputs:
+defmail (scalar - email address of default recipient),
+mailing type (scalar - errormail, packagesmail, or helpdeskmail),
+defdom (domain for which to retrieve configuration settings),
+origmail (scalar - email address of recipient from loncapa.conf,
+i.e., predates configuration by DC via domainprefs.pm
+
+Returns: comma separated list of addresses to which to send e-mail.
+
+=back
+
+=cut
+
+############################################################
+############################################################
+sub build_recipient_list {
+ my ($defmail,$mailing,$defdom,$origmail) = @_;
+ my @recipients;
+ my $otheremails;
+ my %domconfig =
+ &Apache::lonnet::get_dom('configuration',['contacts'],$defdom);
+ if (ref($domconfig{'contacts'}) eq 'HASH') {
+ if (exists($domconfig{'contacts'}{$mailing})) {
+ if (ref($domconfig{'contacts'}{$mailing}) eq 'HASH') {
+ my @contacts = ('adminemail','supportemail');
+ foreach my $item (@contacts) {
+ if ($domconfig{'contacts'}{$mailing}{$item}) {
+ my $addr = $domconfig{'contacts'}{$item};
+ if (!grep(/^\Q$addr\E$/,@recipients)) {
+ push(@recipients,$addr);
+ }
+ }
+ $otheremails = $domconfig{'contacts'}{$mailing}{'others'};
+ }
+ }
+ } elsif ($origmail ne '') {
+ push(@recipients,$origmail);
+ }
+ } elsif ($origmail ne '') {
+ push(@recipients,$origmail);
+ }
+ if (defined($defmail)) {
+ if ($defmail ne '') {
+ push(@recipients,$defmail);
+ }
+ }
+ if ($otheremails) {
+ my @others;
+ if ($otheremails =~ /,/) {
+ @others = split(/,/,$otheremails);
+ } else {
+ push(@others,$otheremails);
+ }
+ foreach my $addr (@others) {
+ if (!grep(/^\Q$addr\E$/,@recipients)) {
+ push(@recipients,$addr);
+ }
+ }
+ }
+ my $recipientlist = join(',',@recipients);
+ return $recipientlist;
+}
+
+############################################################
+############################################################
+
+=pod
+
+=head1 Course Catalog Routines
+
+=over 4
+
+=item * &gather_categories()
+
+Converts category definitions - keys of categories hash stored in
+coursecategories in configuration.db on the primary library server in a
+domain - to an array. Also generates javascript and idx hash used to
+generate Domain Coordinator interface for editing Course Categories.
+
+Inputs:
+
+categories (reference to hash of category definitions).
+
+cats (reference to array of arrays/hashes which encapsulates hierarchy of
+ categories and subcategories).
+
+idx (reference to hash of counters used in Domain Coordinator interface for
+ editing Course Categories).
+
+jsarray (reference to array of categories used to create Javascript arrays for
+ Domain Coordinator interface for editing Course Categories).
+
+Returns: nothing
+
+Side effects: populates cats, idx and jsarray.
+
+=cut
+
+sub gather_categories {
+ my ($categories,$cats,$idx,$jsarray) = @_;
+ my %counters;
+ my $num = 0;
+ foreach my $item (keys(%{$categories})) {
+ my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$item);
+ if ($container eq '' && $depth == 0) {
+ $cats->[$depth][$categories->{$item}] = $cat;
+ } else {
+ $cats->[$depth]{$container}[$categories->{$item}] = $cat;
+ }
+ my ($escitem,$tail) = split(/:/,$item,2);
+ if ($counters{$tail} eq '') {
+ $counters{$tail} = $num;
+ $num ++;
+ }
+ if (ref($idx) eq 'HASH') {
+ $idx->{$item} = $counters{$tail};
+ }
+ if (ref($jsarray) eq 'ARRAY') {
+ push(@{$jsarray->[$counters{$tail}]},$item);
+ }
+ }
+ return;
+}
+
+=pod
+
+=item * &extract_categories()
+
+Used to generate breadcrumb trails for course categories.
+
+Inputs:
+
+categories (reference to hash of category definitions).
+
+cats (reference to array of arrays/hashes which encapsulates hierarchy of
+ categories and subcategories).
+
+trails (reference to array of breacrumb trails for each category).
+
+allitems (reference to hash - key is category key
+ (format: escaped(name):escaped(parent category):depth in hierarchy).
+
+idx (reference to hash of counters used in Domain Coordinator interface for
+ editing Course Categories).
+
+jsarray (reference to array of categories used to create Javascript arrays for
+ Domain Coordinator interface for editing Course Categories).
+
+subcats (reference to hash of arrays containing all subcategories within each
+ category, -recursive)
+
+Returns: nothing
+
+Side effects: populates trails and allitems hash references.
+
+=cut
+
+sub extract_categories {
+ my ($categories,$cats,$trails,$allitems,$idx,$jsarray,$subcats) = @_;
+ if (ref($categories) eq 'HASH') {
+ &gather_categories($categories,$cats,$idx,$jsarray);
+ if (ref($cats->[0]) eq 'ARRAY') {
+ for (my $i=0; $i<@{$cats->[0]}; $i++) {
+ my $name = $cats->[0][$i];
+ my $item = &escape($name).'::0';
+ my $trailstr;
+ if ($name eq 'instcode') {
+ $trailstr = &mt('Official courses (with institutional codes)');
+ } elsif ($name eq 'communities') {
+ $trailstr = &mt('Communities');
+ } else {
+ $trailstr = $name;
+ }
+ if ($allitems->{$item} eq '') {
+ push(@{$trails},$trailstr);
+ $allitems->{$item} = scalar(@{$trails})-1;
+ }
+ my @parents = ($name);
+ if (ref($cats->[1]{$name}) eq 'ARRAY') {
+ for (my $j=0; $j<@{$cats->[1]{$name}}; $j++) {
+ my $category = $cats->[1]{$name}[$j];
+ if (ref($subcats) eq 'HASH') {
+ push(@{$subcats->{$item}},&escape($category).':'.&escape($name).':1');
+ }
+ &recurse_categories($cats,2,$category,$trails,$allitems,\@parents,$subcats);
+ }
+ } else {
+ if (ref($subcats) eq 'HASH') {
+ $subcats->{$item} = [];
+ }
+ }
+ }
+ }
+ }
+ return;
+}
+
+=pod
+
+=item *&recurse_categories()
+
+Recursively used to generate breadcrumb trails for course categories.
+
+Inputs:
+
+cats (reference to array of arrays/hashes which encapsulates hierarchy of
+ categories and subcategories).
+
+depth (current depth in hierarchy of categories and sub-categories - 0 indexed).
+
+category (current course category, for which breadcrumb trail is being generated).
+
+trails (reference to array of breadcrumb trails for each category).
+
+allitems (reference to hash - key is category key
+ (format: escaped(name):escaped(parent category):depth in hierarchy).
+
+parents (array containing containers directories for current category,
+ back to top level).
+
+Returns: nothing
+
+Side effects: populates trails and allitems hash references
+
+=cut
+
+sub recurse_categories {
+ my ($cats,$depth,$category,$trails,$allitems,$parents,$subcats) = @_;
+ my $shallower = $depth - 1;
+ if (ref($cats->[$depth]{$category}) eq 'ARRAY') {
+ for (my $k=0; $k<@{$cats->[$depth]{$category}}; $k++) {
+ my $name = $cats->[$depth]{$category}[$k];
+ my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
+ my $trailstr = join(' -> ',(@{$parents},$category));
+ if ($allitems->{$item} eq '') {
+ push(@{$trails},$trailstr);
+ $allitems->{$item} = scalar(@{$trails})-1;
+ }
+ my $deeper = $depth+1;
+ push(@{$parents},$category);
+ if (ref($subcats) eq 'HASH') {
+ my $subcat = &escape($name).':'.$category.':'.$depth;
+ for (my $j=@{$parents}; $j>=0; $j--) {
+ my $higher;
+ if ($j > 0) {
+ $higher = &escape($parents->[$j]).':'.
+ &escape($parents->[$j-1]).':'.$j;
+ } else {
+ $higher = &escape($parents->[$j]).'::'.$j;
+ }
+ push(@{$subcats->{$higher}},$subcat);
+ }
+ }
+ &recurse_categories($cats,$deeper,$name,$trails,$allitems,$parents,
+ $subcats);
+ pop(@{$parents});
+ }
+ } else {
+ my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
+ my $trailstr = join(' -> ',(@{$parents},$category));
+ if ($allitems->{$item} eq '') {
+ push(@{$trails},$trailstr);
+ $allitems->{$item} = scalar(@{$trails})-1;
+ }
+ }
+ return;
+}
+
+=pod
+
+=item *&assign_categories_table()
+
+Create a datatable for display of hierarchical categories in a domain,
+with checkboxes to allow a course to be categorized.
+
+Inputs:
+
+cathash - reference to hash of categories defined for the domain (from
+ configuration.db)
+
+currcat - scalar with an & separated list of categories assigned to a course.
+
+type - scalar contains course type (Course or Community).
+
+Returns: $output (markup to be displayed)
+
+=cut
+
+sub assign_categories_table {
+ my ($cathash,$currcat,$type) = @_;
+ my $output;
+ if (ref($cathash) eq 'HASH') {
+ my (@cats,@trails,%allitems,%idx,@jsarray,@path,$maxdepth);
+ &extract_categories($cathash,\@cats,\@trails,\%allitems,\%idx,\@jsarray);
+ $maxdepth = scalar(@cats);
+ if (@cats > 0) {
+ my $itemcount = 0;
+ if (ref($cats[0]) eq 'ARRAY') {
+ my @currcategories;
+ if ($currcat ne '') {
+ @currcategories = split('&',$currcat);
+ }
+ my $table;
+ for (my $i=0; $i<@{$cats[0]}; $i++) {
+ my $parent = $cats[0][$i];
+ next if ($parent eq 'instcode');
+ if ($type eq 'Community') {
+ next unless ($parent eq 'communities');
+ } else {
+ next if ($parent eq 'communities');
+ }
+ my $css_class = $itemcount%2?' class="LC_odd_row"':'';
+ my $item = &escape($parent).'::0';
+ my $checked = '';
+ if (@currcategories > 0) {
+ if (grep(/^\Q$item\E$/,@currcategories)) {
+ $checked = ' checked="checked"';
+ }
+ }
+ my $parent_title = $parent;
+ if ($parent eq 'communities') {
+ $parent_title = &mt('Communities');
+ }
+ $table .= ''.
+ ''.$parent_title.''.
+ ' | ';
+ my $depth = 1;
+ push(@path,$parent);
+ $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories);
+ pop(@path);
+ $table .= '
|
';
+ $itemcount ++;
+ }
+ if ($itemcount) {
+ $output = &Apache::loncommon::start_data_table().
+ $table.
+ &Apache::loncommon::end_data_table();
+ }
+ }
+ }
+ }
+ return $output;
+}
+
+=pod
+
+=item *&assign_category_rows()
+
+Create a datatable row for display of nested categories in a domain,
+with checkboxes to allow a course to be categorized,called recursively.
+
+Inputs:
+
+itemcount - track row number for alternating colors
+
+cats - reference to array of arrays/hashes which encapsulates hierarchy of
+ categories and subcategories.
+
+depth - current depth in hierarchy of categories and sub-categories - 0 indexed.
+
+parent - parent of current category item
+
+path - Array containing all categories back up through the hierarchy from the
+ current category to the top level.
+
+currcategories - reference to array of current categories assigned to the course
+
+Returns: $output (markup to be displayed).
+
+=cut
+
+sub assign_category_rows {
+ my ($itemcount,$cats,$depth,$parent,$path,$currcategories) = @_;
+ my ($text,$name,$item,$chgstr);
+ if (ref($cats) eq 'ARRAY') {
+ my $maxdepth = scalar(@{$cats});
+ if (ref($cats->[$depth]) eq 'HASH') {
+ if (ref($cats->[$depth]{$parent}) eq 'ARRAY') {
+ my $numchildren = @{$cats->[$depth]{$parent}};
+ my $css_class = $itemcount%2?' class="LC_odd_row"':'';
+ $text .= ' | ';
+ }
+ }
+ }
+ return $text;
+}
+
+############################################################
+############################################################
+
+
+sub commit_customrole {
+ my ($udom,$uname,$url,$three,$four,$five,$start,$end,$context) = @_;
+ my $output = &mt('Assigning custom role').' "'.$five.'" by '.$four.':'.$three.' in '.$url.
+ ($start?', '.&mt('starting').' '.localtime($start):'').
+ ($end?', ending '.localtime($end):'').': '.
+ &Apache::lonnet::assigncustomrole(
+ $udom,$uname,$url,$three,$four,$five,$end,$start,undef,undef,$context).
+ '
';
+ return $output;
+}
+
+sub commit_standardrole {
+ my ($udom,$uname,$url,$three,$start,$end,$one,$two,$sec,$context) = @_;
+ my ($output,$logmsg,$linefeed);
+ if ($context eq 'auto') {
+ $linefeed = "\n";
+ } else {
+ $linefeed = "
\n";
+ }
+ if ($three eq 'st') {
+ my $result = &commit_studentrole(\$logmsg,$udom,$uname,$url,$three,$start,$end,
+ $one,$two,$sec,$context);
+ if (($result =~ /^error/) || ($result eq 'not_in_class') ||
+ ($result eq 'unknown_course') || ($result eq 'refused')) {
+ $output = $logmsg.' '.&mt('Error: ').$result."\n";
+ } else {
+ $output = $logmsg.$linefeed.&mt('Assigning').' '.$three.' in '.$url.
+ ($start?', '.&mt('starting').' '.localtime($start):'').
+ ($end?', '.&mt('ending').' '.localtime($end):'').': ';
+ if ($context eq 'auto') {
+ $output .= $result.$linefeed.&mt('Add to classlist').': ok';
+ } else {
+ $output .= ''.$result.''.$linefeed.
+ &mt('Add to classlist').': ok';
+ }
+ $output .= $linefeed;
+ }
+ } else {
+ $output = &mt('Assigning').' '.$three.' in '.$url.
+ ($start?', '.&mt('starting').' '.localtime($start):'').
+ ($end?', '.&mt('ending').' '.localtime($end):'').': ';
+ my $result = &Apache::lonnet::assignrole($udom,$uname,$url,$three,$end,$start,'','',$context);
+ if ($context eq 'auto') {
+ $output .= $result.$linefeed;
+ } else {
+ $output .= ''.$result.''.$linefeed;
+ }
+ }
+ return $output;
+}
+
+sub commit_studentrole {
+ my ($logmsg,$udom,$uname,$url,$three,$start,$end,$one,$two,$sec,$context) = @_;
+ my ($result,$linefeed,$oldsecurl,$newsecurl);
+ if ($context eq 'auto') {
+ $linefeed = "\n";
+ } else {
+ $linefeed = '
'."\n";
+ }
+ if (defined($one) && defined($two)) {
+ my $cid=$one.'_'.$two;
+ my $oldsec=&Apache::lonnet::getsection($udom,$uname,$cid);
+ my $secchange = 0;
+ my $expire_role_result;
+ my $modify_section_result;
+ if ($oldsec ne '-1') {
+ if ($oldsec ne $sec) {
+ $secchange = 1;
+ my $now = time;
+ my $uurl='/'.$cid;
+ $uurl=~s/\_/\//g;
+ if ($oldsec) {
+ $uurl.='/'.$oldsec;
+ }
+ $oldsecurl = $uurl;
+ $expire_role_result =
+ &Apache::lonnet::assignrole($udom,$uname,$uurl,'st',$now,'','',$context);
+ if ($env{'request.course.sec'} ne '') {
+ if ($expire_role_result eq 'refused') {
+ my @roles = ('st');
+ my @statuses = ('previous');
+ my @roledoms = ($one);
+ my $withsec = 1;
+ my %roleshash =
+ &Apache::lonnet::get_my_roles($uname,$udom,'userroles',
+ \@statuses,\@roles,\@roledoms,$withsec);
+ if (defined ($roleshash{$two.':'.$one.':st:'.$oldsec})) {
+ my ($oldstart,$oldend) =
+ split(':',$roleshash{$two.':'.$one.':st:'.$oldsec});
+ if ($oldend > 0 && $oldend <= $now) {
+ $expire_role_result = 'ok';
+ }
+ }
+ }
+ }
+ $result = $expire_role_result;
+ }
+ }
+ if (($expire_role_result eq 'ok') || ($secchange == 0)) {
+ $modify_section_result = &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$sec,$end,$start,'','',$cid,'',$context);
+ if ($modify_section_result =~ /^ok/) {
+ if ($secchange == 1) {
+ if ($sec eq '') {
+ $$logmsg .= &mt('Section for [_1] switched from (possibly expired) old section: [_2] to student role without a section.',$uname,$oldsec).$linefeed;
+ } else {
+ $$logmsg .= &mt('Section for [_1] switched from (possibly expired) old section: [_2] to new section: [_3].',$uname,$oldsec,$sec).$linefeed;
+ }
+ } elsif ($oldsec eq '-1') {
+ if ($sec eq '') {
+ $$logmsg .= &mt('New student role without a section for [_1] in course [_2].',$uname,$cid).$linefeed;
+ } else {
+ $$logmsg .= &mt('New student role for [_1] in section [_2] in course [_3].',$uname,$sec,$cid).$linefeed;
+ }
+ } else {
+ if ($sec eq '') {
+ $$logmsg .= &mt('Student [_1] assigned to course [_2] without a section.',$uname,$cid).$linefeed;
+ } else {
+ $$logmsg .= &mt('Student [_1] assigned to section [_2] in course [_3].',$uname,$sec,$cid).$linefeed;
+ }
+ }
+ } else {
+ if ($secchange) {
+ $$logmsg .= &mt('Error when attempting section change for [_1] from old section "[_2]" to new section: "[_3]" in course [_4] -error:',$uname,$oldsec,$sec,$cid).' '.$modify_section_result.$linefeed;
+ } else {
+ $$logmsg .= &mt('Error when attempting to modify role for [_1] for section: "[_2]" in course [_3] -error:',$uname,$sec,$cid).' '.$modify_section_result.$linefeed;
+ }
+ }
+ $result = $modify_section_result;
+ } elsif ($secchange == 1) {
+ if ($oldsec eq '') {
+ $$logmsg .= &mt('Error when attempting to expire existing role without a section for [_1] in course [_3] -error: ',$uname,$cid).' '.$expire_role_result.$linefeed;
+ } else {
+ $$logmsg .= &mt('Error when attempting to expire existing role for [_1] in section [_2] in course [_3] -error: ',$uname,$oldsec,$cid).' '.$expire_role_result.$linefeed;
+ }
+ if ($expire_role_result eq 'refused') {
+ my $newsecurl = '/'.$cid;
+ $newsecurl =~ s/\_/\//g;
+ if ($sec ne '') {
+ $newsecurl.='/'.$sec;
+ }
+ if (&Apache::lonnet::allowed('cst',$newsecurl) && !(&Apache::lonnet::allowed('cst',$oldsecurl))) {
+ if ($sec eq '') {
+ $$logmsg .= &mt('Although your current role has privileges to add students to section "[_1]", you do not have privileges to modify existing enrollments unaffiliated with any section.',$sec).$linefeed;
+ } else {
+ $$logmsg .= &mt('Although your current role has privileges to add students to section "[_1]", you do not have privileges to modify existing enrollments in other sections.',$sec).$linefeed;
+ }
+ }
+ }
+ }
+ } else {
+ $$logmsg .= &mt('Incomplete course id defined.').$linefeed.&mt('Addition of user [_1] from domain [_2] to course [_3], section [_4] not completed.',$uname,$udom,$one.'_'.$two,$sec).$linefeed;
+ $result = "error: incomplete course id\n";
+ }
+ return $result;
+}
+
+############################################################
+############################################################
+
+sub check_clone {
+ my ($args,$linefeed) = @_;
+ my $cloneid='/'.$args->{'clonedomain'}.'/'.$args->{'clonecourse'};
+ my ($clonecrsudom,$clonecrsunum)= &LONCAPA::split_courseid($cloneid);
+ my $clonehome=&Apache::lonnet::homeserver($clonecrsunum,$clonecrsudom);
+ my $clonemsg;
+ my $can_clone = 0;
+ my $lctype = lc($args->{'type'});
+ if ($lctype ne 'community') {
+ $lctype = 'course';
+ }
+ if ($clonehome eq 'no_host') {
+ if ($args->{'type'} eq 'Community') {
+ $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a non-existent community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+ } else {
+ $clonemsg = &mt('No new course created.').$linefeed.&mt('A new course could not be cloned from the specified original - [_1] - because it is a non-existent course.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+ }
+ } else {
+ my %clonedesc = &Apache::lonnet::coursedescription($cloneid,{'one_time' => 1});
+ if ($args->{'type'} eq 'Community') {
+ if ($clonedesc{'type'} ne 'Community') {
+ $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a course not a community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+ return ($can_clone, $clonemsg, $cloneid, $clonehome);
+ }
+ }
+ if (($env{'request.role.domain'} eq $args->{'clonedomain'}) &&
+ (&Apache::lonnet::allowed('ccc',$env{'request.role.domain'}))) {
+ $can_clone = 1;
+ } else {
+ my %clonehash = &Apache::lonnet::get('environment',['cloners'],
+ $args->{'clonedomain'},$args->{'clonecourse'});
+ my @cloners = split(/,/,$clonehash{'cloners'});
+ if (grep(/^\*$/,@cloners)) {
+ $can_clone = 1;
+ } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) {
+ $can_clone = 1;
+ } else {
+ my $ccrole = 'cc';
+ if ($args->{'type'} eq 'Community') {
+ $ccrole = 'co';
+ }
+ my %roleshash =
+ &Apache::lonnet::get_my_roles($args->{'ccuname'},
+ $args->{'ccdomain'},
+ 'userroles',['active'],[$ccrole],
+ [$args->{'clonedomain'}]);
+ if (($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) || (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners))) {
+ $can_clone = 1;
+ } else {
+ if ($args->{'type'} eq 'Community') {
+ $clonemsg = &mt('No new community created.').$linefeed.&mt('The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
+ } else {
+ $clonemsg = &mt('No new course created.').$linefeed.&mt('The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
+ }
+ }
+ }
+ }
+ }
+ return ($can_clone, $clonemsg, $cloneid, $clonehome);
+}
+
+sub construct_course {
+ my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,$cnum,$category) = @_;
+ my $outcome;
+ my $linefeed = '
'."\n";
+ if ($context eq 'auto') {
+ $linefeed = "\n";
+ }
+
+#
+# Are we cloning?
+#
+ my ($can_clone, $clonemsg, $cloneid, $clonehome);
+ if (($args->{'clonecourse'}) && ($args->{'clonedomain'})) {
+ ($can_clone, $clonemsg, $cloneid, $clonehome) = &check_clone($args,$linefeed);
+ if ($context ne 'auto') {
+ if ($clonemsg ne '') {
+ $clonemsg = ''.$clonemsg.'';
+ }
+ }
+ $outcome .= $clonemsg.$linefeed;
+
+ if (!$can_clone) {
+ return (0,$outcome);
+ }
+ }
+
+#
+# Open course
+#
+ my $crstype = lc($args->{'crstype'});
+ my %cenv=();
+ $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'},
+ $args->{'cdescr'},
+ $args->{'curl'},
+ $args->{'course_home'},
+ $args->{'nonstandard'},
+ $args->{'crscode'},
+ $args->{'ccuname'}.':'.
+ $args->{'ccdomain'},
+ $args->{'crstype'},
+ $cnum,$context,$category);
+
+ # Note: The testing routines depend on this being output; see
+ # Utils::Course. This needs to at least be output as a comment
+ # if anyone ever decides to not show this, and Utils::Course::new
+ # will need to be suitably modified.
+ $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$crstype,$$courseid).$linefeed;
+#
+# Check if created correctly
+#
+ ($$crsudom,$$crsunum)= &LONCAPA::split_courseid($$courseid);
+ my $crsuhome=&Apache::lonnet::homeserver($$crsunum,$$crsudom);
+ $outcome .= &mt('Created on').': '.$crsuhome.$linefeed;
+
+#
+# Do the cloning
+#
+ if ($can_clone && $cloneid) {
+ $clonemsg = &mt('Cloning [_1] from [_2]',$crstype,$clonehome);
+ if ($context ne 'auto') {
+ $clonemsg = ''.$clonemsg.'';
+ }
+ $outcome .= $clonemsg.$linefeed;
+ my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum);
+# Copy all files
+ &Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid,$args->{'datemode'},$args->{'dateshift'});
+# Restore URL
+ $cenv{'url'}=$oldcenv{'url'};
+# Restore title
+ $cenv{'description'}=$oldcenv{'description'};
+# Mark as cloned
+ $cenv{'clonedfrom'}=$cloneid;
+# Need to clone grading mode
+ my %newenv=&Apache::lonnet::get('environment',['grading'],$$crsudom,$$crsunum);
+ $cenv{'grading'}=$newenv{'grading'};
+# Do not clone these environment entries
+ &Apache::lonnet::del('environment',
+ ['default_enrollment_start_date',
+ 'default_enrollment_end_date',
+ 'question.email',
+ 'policy.email',
+ 'comment.email',
+ 'pch.users.denied',
+ 'plc.users.denied',
+ 'hidefromcat',
+ 'categories'],
+ $$crsudom,$$crsunum);
+ }
+
+#
+# Set environment (will override cloned, if existing)
+#
+ my @sections = ();
+ my @xlists = ();
+ if ($args->{'crstype'}) {
+ $cenv{'type'}=$args->{'crstype'};
+ }
+ if ($args->{'crsid'}) {
+ $cenv{'courseid'}=$args->{'crsid'};
+ }
+ if ($args->{'crscode'}) {
+ $cenv{'internal.coursecode'}=$args->{'crscode'};
+ }
+ if ($args->{'crsquota'} ne '') {
+ $cenv{'internal.coursequota'}=$args->{'crsquota'};
+ } else {
+ $cenv{'internal.coursequota'}=$args->{'crsquota'} = 20;
+ }
+ if ($args->{'ccuname'}) {
+ $cenv{'internal.courseowner'} = $args->{'ccuname'}.
+ ':'.$args->{'ccdomain'};
+ } else {
+ $cenv{'internal.courseowner'} = $args->{'curruser'};
+ }
+ my @badclasses = (); # Used to accumulate sections/crosslistings that did not pass classlist access check for course owner.
+ if ($args->{'crssections'}) {
+ $cenv{'internal.sectionnums'} = '';
+ if ($args->{'crssections'} =~ m/,/) {
+ @sections = split/,/,$args->{'crssections'};
+ } else {
+ $sections[0] = $args->{'crssections'};
+ }
+ if (@sections > 0) {
+ foreach my $item (@sections) {
+ my ($sec,$gp) = split/:/,$item;
+ my $class = $args->{'crscode'}.$sec;
+ my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'});
+ $cenv{'internal.sectionnums'} .= $item.',';
+ unless ($addcheck eq 'ok') {
+ push @badclasses, $class;
+ }
+ }
+ $cenv{'internal.sectionnums'} =~ s/,$//;
+ }
+ }
+# do not hide course coordinator from staff listing,
+# even if privileged
+ $cenv{'nothideprivileged'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+# add crosslistings
+ if ($args->{'crsxlist'}) {
+ $cenv{'internal.crosslistings'}='';
+ if ($args->{'crsxlist'} =~ m/,/) {
+ @xlists = split/,/,$args->{'crsxlist'};
+ } else {
+ $xlists[0] = $args->{'crsxlist'};
+ }
+ if (@xlists > 0) {
+ foreach my $item (@xlists) {
+ my ($xl,$gp) = split/:/,$item;
+ my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'});
+ $cenv{'internal.crosslistings'} .= $item.',';
+ unless ($addcheck eq 'ok') {
+ push @badclasses, $xl;
+ }
+ }
+ $cenv{'internal.crosslistings'} =~ s/,$//;
+ }
+ }
+ if ($args->{'autoadds'}) {
+ $cenv{'internal.autoadds'}=$args->{'autoadds'};
+ }
+ if ($args->{'autodrops'}) {
+ $cenv{'internal.autodrops'}=$args->{'autodrops'};
+ }
+# check for notification of enrollment changes
+ my @notified = ();
+ if ($args->{'notify_owner'}) {
+ if ($args->{'ccuname'} ne '') {
+ push(@notified,$args->{'ccuname'}.':'.$args->{'ccdomain'});
+ }
+ }
+ if ($args->{'notify_dc'}) {
+ if ($uname ne '') {
+ push(@notified,$uname.':'.$udom);
+ }
+ }
+ if (@notified > 0) {
+ my $notifylist;
+ if (@notified > 1) {
+ $notifylist = join(',',@notified);
+ } else {
+ $notifylist = $notified[0];
+ }
+ $cenv{'internal.notifylist'} = $notifylist;
+ }
+ if (@badclasses > 0) {
+ my %lt=&Apache::lonlocal::texthash(
+ 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course. However, if automated course roster updates are enabled for this class, these particular sections/crosslistings will not contribute towards enrollment, because the user identified as the course owner for this LON-CAPA course',
+ 'dnhr' => 'does not have rights to access enrollment in these classes',
+ 'adby' => 'as determined by the policies of your institution on access to official classlists'
+ );
+ my $badclass_msg = $cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}.
+ ' ('.$lt{'adby'}.')';
+ if ($context eq 'auto') {
+ $outcome .= $badclass_msg.$linefeed;
+ $outcome .= ''.$badclass_msg.$linefeed.'
'."\n";
+ foreach my $item (@badclasses) {
+ if ($context eq 'auto') {
+ $outcome .= " - $item\n";
+ } else {
+ $outcome .= "- $item
\n";
+ }
+ }
+ if ($context eq 'auto') {
+ $outcome .= $linefeed;
+ } else {
+ $outcome .= "
\n";
+ }
+ }
+ }
+ if ($args->{'no_end_date'}) {
+ $args->{'endaccess'} = 0;
+ }
+ $cenv{'internal.autostart'}=$args->{'enrollstart'};
+ $cenv{'internal.autoend'}=$args->{'enrollend'};
+ $cenv{'default_enrollment_start_date'}=$args->{'startaccess'};
+ $cenv{'default_enrollment_end_date'}=$args->{'endaccess'};
+ if ($args->{'showphotos'}) {
+ $cenv{'internal.showphotos'}=$args->{'showphotos'};
+ }
+ $cenv{'internal.authtype'} = $args->{'authtype'};
+ $cenv{'internal.autharg'} = $args->{'autharg'};
+ if ( ($cenv{'internal.authtype'} =~ /^krb/) && ($cenv{'internal.autoadds'} == 1)) {
+ if (! defined($cenv{'internal.autharg'}) || $cenv{'internal.autharg'} eq '') {
+ my $krb_msg = &mt('As you did not include the default Kerberos domain to be used for authentication in this class, the institutional data used by the automated enrollment process must include the Kerberos domain for each new student');
+ if ($context eq 'auto') {
+ $outcome .= $krb_msg;
+ } else {
+ $outcome .= ''.$krb_msg.'';
+ }
+ $outcome .= $linefeed;
+ }
+ }
+ if (($args->{'ccdomain'}) && ($args->{'ccuname'})) {
+ if ($args->{'setpolicy'}) {
+ $cenv{'policy.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+ }
+ if ($args->{'setcontent'}) {
+ $cenv{'question.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+ }
+ }
+ if ($args->{'reshome'}) {
+ $cenv{'reshome'}=$args->{'reshome'}.'/';
+ $cenv{'reshome'}=~s/\/+$/\//;
+ }
+#
+# course has keyed access
+#
+ if ($args->{'setkeys'}) {
+ $cenv{'keyaccess'}='yes';
+ }
+# if specified, key authority is not course, but user
+# only active if keyaccess is yes
+ if ($args->{'keyauth'}) {
+ my ($user,$domain) = split(':',$args->{'keyauth'});
+ $user = &LONCAPA::clean_username($user);
+ $domain = &LONCAPA::clean_username($domain);
+ if ($user ne '' && $domain ne '') {
+ $cenv{'keyauth'}=$user.':'.$domain;
+ }
+ }
+
+ if ($args->{'disresdis'}) {
+ $cenv{'pch.roles.denied'}='st';
+ }
+ if ($args->{'disablechat'}) {
+ $cenv{'plc.roles.denied'}='st';
+ }
+
+ # Record we've not yet viewed the Course Initialization Helper for this
+ # course
+ $cenv{'course.helper.not.run'} = 1;
+ #
+ # Use new Randomseed
+ #
+ $cenv{'rndseed'}=&Apache::lonnet::latest_rnd_algorithm_id();;
+ $cenv{'receiptalg'}=&Apache::lonnet::latest_receipt_algorithm_id();;
+ #
+ # The encryption code and receipt prefix for this course
+ #
+ $cenv{'internal.encseed'}=$Apache::lonnet::perlvar{'lonReceipt'}.$$.time.int(rand(9999));
+ $cenv{'internal.encpref'}=100+int(9*rand(99));
+ #
+ # By default, use standard grading
+ if (!defined($cenv{'grading'})) { $cenv{'grading'} = 'standard'; }
+
+ $outcome .= $linefeed.&mt('Setting environment').': '.
+ &Apache::lonnet::put('environment',\%cenv,$$crsudom,$$crsunum).$linefeed;
+#
+# Open all assignments
+#
+ if ($args->{'openall'}) {
+ my $storeunder=$$crsudom.'_'.$$crsunum.'.0.opendate';
+ my %storecontent = ($storeunder => time,
+ $storeunder.'.type' => 'date_start');
+
+ $outcome .= &mt('Opening all assignments').': '.&Apache::lonnet::cput
+ ('resourcedata',\%storecontent,$$crsudom,$$crsunum).$linefeed;
+ }
+#
+# Set first page
+#
+ unless (($args->{'nonstandard'}) || ($args->{'firstres'} eq 'blank')
+ || ($cloneid)) {
+ use LONCAPA::map;
+ $outcome .= &mt('Setting first resource').': ';
+
+ my $map = '/uploaded/'.$$crsudom.'/'.$$crsunum.'/default.sequence';
+ my ($errtext,$fatal)=&LONCAPA::map::mapread($map);
+
+ $outcome .= ($fatal?$errtext:'read ok').' - ';
+ my $title; my $url;
+ if ($args->{'firstres'} eq 'syl') {
+ $title=&mt('Syllabus');
+ $url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';
+ } else {
+ $title=&mt('Navigate Contents');
+ $url='/adm/navmaps';
+ }
+
+ $LONCAPA::map::resources[1]=$title.':'.$url.':false:start:res';
+ (my $outtext,$errtext) = &LONCAPA::map::storemap($map,1);
+
+ if ($errtext) { $fatal=2; }
+ $outcome .= ($fatal?$errtext:'write ok').$linefeed;
+ }
+
+ return (1,$outcome);
+}
+
+############################################################
+############################################################
+
+sub course_type {
+ my ($cid) = @_;
+ if (!defined($cid)) {
+ $cid = $env{'request.course.id'};
+ }
+ if (defined($env{'course.'.$cid.'.type'})) {
+ return $env{'course.'.$cid.'.type'};
+ } else {
+ return 'Course';
+ }
+}
+
+sub group_term {
+ my $crstype = &course_type();
+ my %names = (
+ 'Course' => 'group',
+ 'Community' => 'group',
+ );
+ return $names{$crstype};
+}
+
+sub course_types {
+ my @types = ('official','unofficial','community');
+ my %typename = (
+ official => 'Official course',
+ unofficial => 'Unofficial course',
+ community => 'Community',
+ );
+ return (\@types,\%typename);
+}
+
+sub icon {
+ my ($file)=@_;
+ my $curfext = lc((split(/\./,$file))[-1]);
+ my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
+ my $embstyle = &Apache::loncommon::fileembstyle($curfext);
+ if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
+ if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
+ $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
+ $curfext.".gif") {
+ $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
+ $curfext.".gif";
+ }
+ }
+ return &lonhttpdurl($iconname);
+}
+
+sub lonhttpdurl {
+#
+# Had been used for "small fry" static images on separate port 8080.
+# Modify here if lightweight http functionality desired again.
+# Currently eliminated due to increasing firewall issues.
+#
+ my ($url)=@_;
+ return $url;
+}
+
+sub connection_aborted {
+ my ($r)=@_;
+ $r->print(" ");$r->rflush();
+ my $c = $r->connection;
+ return $c->aborted();
+}
+
+# Escapes strings that may have embedded 's that will be put into
+# strings as 'strings'.
+sub escape_single {
+ my ($input) = @_;
+ $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
+ $input =~ s/\'/\\\'/g; # Esacpe the 's....
+ return $input;
+}
+
+# Same as escape_single, but escape's "'s This
+# can be used for "strings"
+sub escape_double {
+ my ($input) = @_;
+ $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
+ $input =~ s/\"/\\\"/g; # Esacpe the "s....
+ return $input;
+}
+
+# Escapes the last element of a full URL.
+sub escape_url {
+ my ($url) = @_;
+ my @urlslices = split(/\//, $url,-1);
+ my $lastitem = &escape(pop(@urlslices));
+ return join('/',@urlslices).'/'.$lastitem;
+}
+
+sub compare_arrays {
+ my ($arrayref1,$arrayref2) = @_;
+ my (@difference,%count);
+ @difference = ();
+ %count = ();
+ if ((ref($arrayref1) eq 'ARRAY') && (ref($arrayref2) eq 'ARRAY')) {
+ foreach my $element (@{$arrayref1}, @{$arrayref2}) { $count{$element}++; }
+ foreach my $element (keys(%count)) {
+ if ($count{$element} == 1) {
+ push(@difference,$element);
+ }
+ }
+ }
+ return @difference;
+}
+
+# -------------------------------------------------------- Initialize user login
+sub init_user_environment {
+ my ($r, $username, $domain, $authhost, $form, $args) = @_;
+ my $lonids=$Apache::lonnet::perlvar{'lonIDsDir'};
+
+ my $public=($username eq 'public' && $domain eq 'public');
+
+# See if old ID present, if so, remove
+
+ my ($filename,$cookie,$userroles);
+ my $now=time;
+
+ if ($public) {
+ my $max_public=100;
+ my $oldest;
+ my $oldest_time=0;
+ for(my $next=1;$next<=$max_public;$next++) {
+ if (-e $lonids."/publicuser_$next.id") {
+ my $mtime=(stat($lonids."/publicuser_$next.id"))[9];
+ if ($mtime<$oldest_time || !$oldest_time) {
+ $oldest_time=$mtime;
+ $oldest=$next;
+ }
+ } else {
+ $cookie="publicuser_$next";
+ last;
+ }
+ }
+ if (!$cookie) { $cookie="publicuser_$oldest"; }
+ } else {
+ # if this isn't a robot, kill any existing non-robot sessions
+ if (!$args->{'robot'}) {
+ opendir(DIR,$lonids);
+ while ($filename=readdir(DIR)) {
+ if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
+ unlink($lonids.'/'.$filename);
+ }
+ }
+ closedir(DIR);
+ }
+# Give them a new cookie
+ my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
+ : $now.$$.int(rand(10000)));
+ $cookie="$username\_$id\_$domain\_$authhost";
+
+# Initialize roles
+
+ $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost);
+ }
+# ------------------------------------ Check browser type and MathML capability
+
+ my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
+ $clientunicode,$clientos) = &decode_user_agent($r);
+
+# ------------------------------------------------------------- Get environment
+
+ my %userenv = &Apache::lonnet::dump('environment',$domain,$username);
+ my ($tmp) = keys(%userenv);
+ if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
+ # default remote control to off
+ if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; }
+ } else {
+ undef(%userenv);
+ }
+ if (($userenv{'interface'}) && (!$form->{'interface'})) {
+ $form->{'interface'}=$userenv{'interface'};
+ }
+ $env{'environment.remote'}=$userenv{'remote'};
+ if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; }
+
+# --------------- Do not trust query string to be put directly into environment
+ foreach my $option ('interface','localpath','localres') {
+ $form->{$option}=~s/[\n\r\=]//gs;
+ }
+# --------------------------------------------------------- Write first profile
+
+ {
+ my %initial_env =
+ ("user.name" => $username,
+ "user.domain" => $domain,
+ "user.home" => $authhost,
+ "browser.type" => $clientbrowser,
+ "browser.version" => $clientversion,
+ "browser.mathml" => $clientmathml,
+ "browser.unicode" => $clientunicode,
+ "browser.os" => $clientos,
+ "server.domain" => $Apache::lonnet::perlvar{'lonDefDomain'},
+ "request.course.fn" => '',
+ "request.course.uri" => '',
+ "request.course.sec" => '',
+ "request.role" => 'cm',
+ "request.role.adv" => $env{'user.adv'},
+ "request.host" => $ENV{'REMOTE_ADDR'},);
+
+ if ($form->{'localpath'}) {
+ $initial_env{"browser.localpath"} = $form->{'localpath'};
+ $initial_env{"browser.localres"} = $form->{'localres'};
+ }
+
+ if ($public) {
+ $initial_env{"environment.remote"} = "off";
+ }
+ if ($form->{'interface'}) {
+ $form->{'interface'}=~s/\W//gs;
+ $initial_env{"browser.interface"} = $form->{'interface'};
+ $env{'browser.interface'}=$form->{'interface'};
+ }
+
+ foreach my $tool ('aboutme','blog','portfolio') {
+ $userenv{'availabletools.'.$tool} =
+ &Apache::lonnet::usertools_access($username,$domain,$tool,'reload');
+ }
+
+ foreach my $crstype ('official','unofficial','community') {
+ $userenv{'canrequest.'.$crstype} =
+ &Apache::lonnet::usertools_access($username,$domain,$crstype,
+ 'reload','requestcourses');
+ }
+
+ $env{'user.environment'} = "$lonids/$cookie.id";
+
+ if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
+ &GDBM_WRCREAT(),0640)) {
+ &_add_to_env(\%disk_env,\%initial_env);
+ &_add_to_env(\%disk_env,\%userenv,'environment.');
+ &_add_to_env(\%disk_env,$userroles);
+ if (ref($args->{'extra_env'})) {
+ &_add_to_env(\%disk_env,$args->{'extra_env'});
+ }
+ untie(%disk_env);
+ } else {
+ &Apache::lonnet::logthis("WARNING: ".
+ 'Could not create environment storage in lonauth: '.$!.'');
+ return 'error: '.$!;
+ }
+ }
+ $env{'request.role'}='cm';
+ $env{'request.role.adv'}=$env{'user.adv'};
+ $env{'browser.type'}=$clientbrowser;
+
+ return $cookie;
+
+}
+
+sub _add_to_env {
+ my ($idf,$env_data,$prefix) = @_;
+ if (ref($env_data) eq 'HASH') {
+ while (my ($key,$value) = each(%$env_data)) {
+ $idf->{$prefix.$key} = $value;
+ $env{$prefix.$key} = $value;
+ }
+ }
+}
+
+# --- Get the symbolic name of a problem and the url
+sub get_symb {
+ my ($request,$silent) = @_;
+ (my $url=$env{'form.url'}) =~ s-^https?\://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+ my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
+ if ($symb eq '') {
+ if (!$silent) {
+ $request->print("Unable to handle ambiguous references:$url:.");
+ return ();
+ }
+ }
+ &Apache::lonenc::check_decrypt(\$symb);
+ return ($symb);
+}
+
+# --------------------------------------------------------------Get annotation
+
+sub get_annotation {
+ my ($symb,$enc) = @_;
+
+ my $key = $symb;
+ if (!$enc) {
+ $key =
+ &Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
+ }
+ my %annotation=&Apache::lonnet::get('nohist_annotations',[$key]);
+ return $annotation{$key};
+}
+
+sub clean_symb {
+ my ($symb,$delete_enc) = @_;
+
+ &Apache::lonenc::check_decrypt(\$symb);
+ my $enc = $env{'request.enc'};
+ if ($delete_enc) {
+ delete($env{'request.enc'});
+ }
+
+ return ($symb,$enc);
+}
+
+=pod
+
+=back
+
+=cut
+
+1;
+__END__;
+