--- loncom/interface/loncommon.pm 2016/10/22 19:10:11 1.1075.2.115 +++ loncom/interface/loncommon.pm 2018/07/04 13:44:16 1.1319 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # a pile of common routines # -# $Id: loncommon.pm,v 1.1075.2.115 2016/10/22 19:10:11 raeburn Exp $ +# $Id: loncommon.pm,v 1.1319 2018/07/04 13:44:16 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -71,15 +71,23 @@ use Apache::lonuserutils(); use Apache::lonuserstate(); use Apache::courseclassifier(); use LONCAPA qw(:DEFAULT :match); +use LONCAPA::LWPReq; use DateTime::TimeZone; use DateTime::Locale; use Encode(); +use Text::Aspell; use Authen::Captcha; use Captcha::reCAPTCHA; use JSON::DWIW; use LWP::UserAgent; use Crypt::DES; use DynaLoader; # for Crypt::DES version +use MIME::Lite; +use MIME::Types; +use File::Copy(); +use File::Path(); +use String::CRC32(); +use Short::URL(); # ---------------------------------------------- Designs use vars qw(%defaultdesign); @@ -164,6 +172,7 @@ sub ssi_with_retries { # ----------------------------------------------- Filetypes/Languages/Copyright my %language; my %supported_language; +my %supported_codes; my %latex_language; # For choosing hyphenation in my %latex_language_bykey; # for choosing hyphenation from metadata my %cprtag; @@ -194,18 +203,19 @@ BEGIN { { my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/language.tab'; - if ( open(my $fh,"<$langtabfile") ) { + if ( open(my $fh,'<',$langtabfile) ) { while (my $line = <$fh>) { next if ($line=~/^\#/); chomp($line); - my ($key,$two,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line)); + my ($key,$code,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line)); $language{$key}=$val.' - '.$enc; if ($sup) { $supported_language{$key}=$sup; + $supported_codes{$key} = $code; } if ($latex) { $latex_language_bykey{$key} = $latex; - $latex_language{$two} = $latex; + $latex_language{$code} = $latex; } } close($fh); @@ -215,7 +225,7 @@ BEGIN { { my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}. '/copyright.tab'; - if ( open (my $fh,"<$copyrightfile") ) { + if ( open (my $fh,'<',$copyrightfile) ) { while (my $line = <$fh>) { next if ($line=~/^\#/); chomp($line); @@ -229,7 +239,7 @@ BEGIN { { my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}. '/source_copyright.tab'; - if ( open (my $fh,"<$sourcecopyrightfile") ) { + if ( open (my $fh,'<',$sourcecopyrightfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -243,7 +253,7 @@ BEGIN { # -------------------------------------------------------------- default domain designs my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors'; my $designfile = $designdir.'/default.tab'; - if ( open (my $fh,"<$designfile") ) { + if ( open (my $fh,'<',$designfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -257,12 +267,12 @@ BEGIN { { my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/filecategories.tab'; - if ( open (my $fh,"<$categoryfile") ) { + if ( open (my $fh,'<',$categoryfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); my ($extension,$category)=(split(/\s+/,$line,2)); - push @{$category_extensions{lc($category)}},$extension; + push(@{$category_extensions{lc($category)}},$extension); } close($fh); } @@ -272,7 +282,7 @@ BEGIN { { my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/filetypes.tab'; - if ( open (my $fh,"<$typesfile") ) { + if ( open (my $fh,'<',$typesfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -675,7 +685,7 @@ if (!Array.prototype.indexOf) { var n = 0; if (arguments.length > 0) { n = Number(arguments[1]); - if (n !== n) { // shortcut for verifying if it's NaN + if (n !== n) { // shortcut for verifying if it is NaN n = 0; } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) { n = (n > 0 || -1) * Math.floor(Math.abs(n)); @@ -876,6 +886,8 @@ sub selectcourse_link { my $linktext = &mt('Select Course'); if ($selecttype eq 'Community') { $linktext = &mt('Select Community'); + } elsif ($selecttype eq 'Placement') { + $linktext = &mt('Select Placement Test'); } elsif ($selecttype eq 'Course/Community') { $linktext = &mt('Select Course/Community'); $type = ''; @@ -911,12 +923,12 @@ sub check_uncheck_jscript { function checkAll(field) { if (field.length > 0) { for (i = 0; i < field.length; i++) { - if (!field[i].disabled) { + if (!field[i].disabled) { field[i].checked = true; } } } else { - if (!field.disabled) { + if (!field.disabled) { field.checked = true; } } @@ -992,7 +1004,7 @@ sub select_datelocale { } $locale_names{$id} = Encode::encode('UTF-8',$locale_names{$id}); push(@possibles,$id); - } + } } } foreach my $item (sort(@possibles)) { @@ -1028,6 +1040,33 @@ sub select_language { =pod + +=item * &list_languages() + +Returns an array reference that is suitable for use in language prompters. +Each array element is itself a two element array. The first element +is the language code. The second element a descsriptiuon of the +language itself. This is suitable for use in e.g. +&Apache::edit::select_arg (once dereferenced that is). + +=cut + +sub list_languages { + my @lang_choices; + + foreach my $id (&languageids()) { + my $code = &supportedlanguagecode($id); + if ($code) { + my $selector = $supported_codes{$id}; + my $description = &plainlanguagedescription($id); + push(@lang_choices, [$selector, $description]); + } + } + return \@lang_choices; +} + +=pod + =item * &linked_select_forms(...) linked_select_forms returns a string containing a block @@ -1060,6 +1099,9 @@ linked_select_forms takes the following =item * $onchangesecond, additional javascript call to execute for an onchange event for the second \n"; + $result .= ""; } +sub crsauthor_url { + my ($url) = @_; + if ($url eq '') { + $url = $ENV{'REQUEST_URI'}; + } + my ($cnum,$cdom); + if ($env{'request.course.id'}) { + my ($audom,$auname) = ($url =~ m{^/priv/($match_domain)/($match_name)/}); + if ($audom ne '' && $auname ne '') { + if (($env{'course.'.$env{'request.course.id'}.'.num'} eq $auname) && + ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $audom)) { + $cnum = $auname; + $cdom = $audom; + } + } + } + return ($cnum,$cdom); +} + +sub import_crsauthor_form { + my ($form,$firstselectname,$secondselectname,$onchangefirst,$only,$suffix,$disabled) = @_; + return (0) unless ($env{'request.course.id'}); + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $crshome = $env{'course.'.$env{'request.course.id'}.'.home'}; + return (0) unless (($cnum ne '') && ($cdom ne '')); + my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'}; + my @ids=&Apache::lonnet::current_machine_ids(); + my ($output,$is_home,$relpath,%subdirs,%files,%selimport_menus); + + if (grep(/^\Q$crshome\E$/,@ids)) { + $is_home = 1; + } + $relpath = "/priv/$cdom/$cnum"; + &Apache::lonnet::recursedirs($is_home,'priv',$londocroot,$relpath,'',\%subdirs,\%files); + my %lt = &Apache::lonlocal::texthash ( + fnam => 'Filename', + dire => 'Directory', + ); + my $numdirs = scalar(keys(%files)); + my (%possexts,$singledir,@singledirfiles); + if ($only) { + map { $possexts{$_} = 1; } split(/\s*,\s*/,$only); + } + my (%nonemptydirs,$possdirs); + if ($numdirs > 1) { + my @order; + foreach my $key (sort { lc($a) cmp lc($b) } (keys(%files))) { + if (ref($files{$key}) eq 'HASH') { + my $shown = $key; + if ($key eq '') { + $shown = '/'; + } + my @ordered = (); + foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$key}}))) { + next if ($file =~ /\.rights$/); + if ($only) { + my ($ext) = ($file =~ /\.([^.]+)$/); + unless ($possexts{lc($ext)}) { + next; + } + } + $selimport_menus{$key}->{'select2'}->{$file} = $file; + push(@ordered,$file); + } + if (@ordered) { + push(@order,$key); + $nonemptydirs{$key} = 1; + $selimport_menus{$key}->{'text'} = $shown; + $selimport_menus{$key}->{'default'} = ''; + $selimport_menus{$key}->{'select2'}->{''} = ''; + $selimport_menus{$key}->{'order'} = \@ordered; + } + } + } + $possdirs = scalar(keys(%nonemptydirs)); + if ($possdirs > 1) { + my @order = sort { lc($a) cmp lc($b) } (keys(%nonemptydirs)); + $output = $lt{'dire'}. + &linked_select_forms($form,'
'. + $lt{'fnam'},'', + $firstselectname,$secondselectname, + \%selimport_menus,\@order, + $onchangefirst,'',$suffix).'
'; + } elsif ($possdirs == 1) { + $singledir = (keys(%nonemptydirs))[0]; + if (ref($selimport_menus{$singledir}->{'order'}) eq 'ARRAY') { + @singledirfiles = @{$selimport_menus{$singledir}->{'order'}}; + } + delete($selimport_menus{$singledir}); + } + } elsif ($numdirs == 1) { + $singledir = (keys(%files))[0]; + foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$singledir}}))) { + if ($only) { + my ($ext) = ($file =~ /\.([^.]+)$/); + unless ($possexts{lc($ext)}) { + next; + } + } else { + next if ($file =~ /\.rights$/); + } + push(@singledirfiles,$file); + } + if (@singledirfiles) { + $possdirs = 1; + } + } + if (($possdirs == 1) && (@singledirfiles)) { + my $showdir = $singledir; + if ($singledir eq '') { + $showdir = '/'; + } + $output = $lt{'dire'}. + '
'. + $lt{'fnam'}.'
'."\n"; + } + return ($possdirs,$output); +} =pod @@ -2167,10 +2493,24 @@ sub create_text_file { # ------------------------------------------ sub domain_select { - my ($name,$value,$multiple)=@_; + my ($name,$value,$multiple,$incdoms,$excdoms)=@_; + my @possdoms; + if (ref($incdoms) eq 'ARRAY') { + @possdoms = @{$incdoms}; + } else { + @possdoms = &Apache::lonnet::all_domains(); + } + my %domains=map { $_ => $_.' '. &Apache::lonnet::domain($_,'description') - } &Apache::lonnet::all_domains(); + } @possdoms; + + if ((ref($excdoms) eq 'ARRAY') && (@{$excdoms} > 0)) { + foreach my $dom (@{$excdoms}) { + delete($domains{$dom}); + } + } + if ($multiple) { $domains{''}=&mt('Any domain'); $domains{'select_form_order'} = [sort {lc($a) cmp lc($b) } (keys(%domains))]; @@ -2247,7 +2587,7 @@ option_name => displayed text. An option a javascript onchange item, e.g., onchange="this.form.submit();". An optional arg -- $readonly -- if true will cause the select form to be disabled, e.g., for the case where an instructor has a section- -specific role, and is viewing/modifying parameters. +specific role, and is viewing/modifying parameters. See lonrights.pm for an example invocation and use. @@ -2260,7 +2600,11 @@ sub select_form { if ($onchange) { $onchange = ' onchange="'.$onchange.'"'; } - my $selectform = "\n"; my @keys; if (exists($hashref->{'select_form_order'})) { @keys=@{$hashref->{'select_form_order'}}; @@ -2446,7 +2790,7 @@ The optional $incdoms is a reference to The optional $excdoms is a reference to an array of domains which will be excluded from the available options. -The optional $disabled argument, if true, adds the disabled attribute to the select tag. +The optional $disabled argument, if true, adds the disabled attribute to the select tag. =cut @@ -2467,7 +2811,7 @@ sub select_dom_form { } if ($includeempty) { @domains=('',@domains); } if (ref($excdoms) eq 'ARRAY') { - map { $exclude{$_} = 1; } @{$excdoms}; + map { $exclude{$_} = 1; } @{$excdoms}; } my $selectdomain = "'; + $authtype = ''; } } } @@ -2905,7 +3254,7 @@ sub authform_kerberos { if ($authtype eq '') { $authtype = ''; + $krbcheck.$disabled.' />'; } if (($can_assign{'krb4'} && $can_assign{'krb5'}) || ($can_assign{'krb4'} && !$can_assign{'krb5'} && @@ -2918,9 +3267,9 @@ sub authform_kerberos { '', - ''. ''. ''; if (ref($path) eq 'ARRAY') { push(@{$path},$name); - $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories); + $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories,$disabled); pop(@{$path}); } $text .= ''; @@ -14468,7 +15655,7 @@ sub commit_studentrole { } } } else { - if ($secchange) { + 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.$linefeed; @@ -14547,11 +15734,11 @@ sub check_clone { my %clonedesc = &Apache::lonnet::coursedescription($cloneid,{'one_time' => 1}); if ($args->{'crstype'} eq 'Community') { if ($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'}); + $clonemsg = &mt('No new community created.').$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 $args->{'clonedomain'}) && + if (($env{'request.role.domain'} eq $args->{'clonedomain'}) && (&Apache::lonnet::allowed('ccc',$env{'request.role.domain'}))) { $can_clone = 1; } else { @@ -14565,7 +15752,7 @@ sub check_clone { if ($args->{'ccdomain'} eq $args->{'clonedomain'}) { $can_clone = 1; } - } elsif (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && + } elsif (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && ($args->{'clonedomain'} eq $args->{'course_domain'})) { if (&Apache::lonnet::default_instcode_cloning($args->{'clonedomain'},$domdefs{'canclone'}, $clonehash{'internal.coursecode'},$args->{'crscode'})) { @@ -14584,7 +15771,7 @@ sub check_clone { $can_clone = 1; } unless ($can_clone) { - if (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && + if (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && ($args->{'clonedomain'} eq $args->{'course_domain'})) { my (%gotdomdefaults,%gotcodedefaults); foreach my $cloner (@cloners) { @@ -14623,12 +15810,12 @@ sub check_clone { if ($args->{'crstype'} eq 'Community') { $ccrole = 'co'; } - my %roleshash = - &Apache::lonnet::get_my_roles($args->{'ccuname'}, - $args->{'ccdomain'}, + my %roleshash = + &Apache::lonnet::get_my_roles($args->{'ccuname'}, + $args->{'ccdomain'}, 'userroles',['active'],[$ccrole], - [$args->{'clonedomain'}]); - if ($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) { + [$args->{'clonedomain'}]); + if ($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) { $can_clone = 1; } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'}, $args->{'ccuname'},$args->{'ccdomain'})) { @@ -14640,7 +15827,7 @@ sub check_clone { $clonemsg = &mt('No new community created.').$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'},$clonedesc{'description'}); - } + } } } } @@ -14648,7 +15835,8 @@ sub check_clone { } sub construct_course { - my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,$cnum,$category,$coderef) = @_; + my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context, + $cnum,$category,$coderef) = @_; my $outcome; my $linefeed = '
'."\n"; if ($context eq 'auto') { @@ -14676,7 +15864,12 @@ sub construct_course { # # Open course # - my $crstype = lc($args->{'crstype'}); + my $showncrstype; + if ($args->{'crstype'} eq 'Placement') { + $showncrstype = 'placement test'; + } else { + $showncrstype = lc($args->{'crstype'}); + } my %cenv=(); $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'}, $args->{'cdescr'}, @@ -14693,7 +15886,7 @@ sub construct_course { # Utils::Course. This needs to at least be output as a comment # if anyone ever decides to not show this, and Utils::Course::new # will need to be suitably modified. - $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$crstype,$$courseid).$linefeed; + $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$showncrstype,$$courseid).$linefeed; if ($$courseid =~ /^error:/) { return (0,$outcome); } @@ -14713,7 +15906,7 @@ sub construct_course { # Do the cloning # if ($can_clone && $cloneid) { - $clonemsg = &mt('Cloning [_1] from [_2]',$crstype,$clonehome); + $clonemsg = &mt('Cloning [_1] from [_2]',$showncrstype,$clonehome); if ($context ne 'auto') { $clonemsg = ''.$clonemsg.''; } @@ -14796,7 +15989,7 @@ sub construct_course { my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'}); $cenv{'internal.sectionnums'} .= $item.','; unless ($addcheck eq 'ok') { - push @badclasses, $class; + push(@badclasses,$class); } } $cenv{'internal.sectionnums'} =~ s/,$//; @@ -14824,7 +16017,7 @@ sub construct_course { my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'}); $cenv{'internal.crosslistings'} .= $item.','; unless ($addcheck eq 'ok') { - push @badclasses, $xl; + push(@badclasses,$xl); } } $cenv{'internal.crosslistings'} =~ s/,$//; @@ -14859,27 +16052,28 @@ sub construct_course { } 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' + 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course.', + 'howi' => 'However, if automated course roster updates are enabled for this class, these particular sections/crosslistings are not guaranteed to contribute towards enrollment.', + 'itis' => 'It is possible that rights to access enrollment for these classes will be available through assignment of co-owners.', ); - my $badclass_msg = $cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}. - ' ('.$lt{'adby'}.')'; + my $badclass_msg = $lt{'tclb'}.$linefeed.$lt{'howi'}.$linefeed. + &mt('That is because the user identified as the course owner ([_1]) does not have rights to access enrollment in these classes, as determined by the policies of your institution on access to official classlists',$cenv{'internal.courseowner'}).$linefeed.$lt{'itis'}; if ($context eq 'auto') { $outcome .= $badclass_msg.$linefeed; + } else { $outcome .= '
'.$badclass_msg.$linefeed.'

\n"; + $outcome .= "
  • $item
    • \n"; } + } + if ($context eq 'auto') { + $outcome .= $linefeed; + } else { + $outcome .= "

    \n"; } } if ($args->{'no_end_date'}) { @@ -14949,7 +16143,7 @@ sub construct_course { if (ref($crsinfo{$$crsudom.'_'.$$crsunum}) eq 'HASH') { $crsinfo{$$crsudom.'_'.$$crsunum}{'uniquecode'} = $code; my $putres = &Apache::lonnet::courseidput($$crsudom,\%crsinfo,$crsuhome,'notime'); - } + } if (ref($coderef)) { $$coderef = $code; } @@ -15021,6 +16215,30 @@ sub construct_course { $outcome .= ($fatal?$errtext:'write ok').$linefeed; } +# +# Set params for Placement Tests +# + if ($args->{'crstype'} eq 'Placement') { + my %storecontent; + my $prefix=$$crsudom.'_'.$$crsunum.'.0.'; + my %defaults = ( + buttonshide => { value => 'yes', + type => 'string_yesno',}, + type => { value => 'randomizetry', + type => 'string_questiontype',}, + maxtries => { value => 1, + type => 'int_pos',}, + problemstatus => { value => 'no', + type => 'string_problemstatus',}, + ); + foreach my $key (keys(%defaults)) { + $storecontent{$prefix.$key} = $defaults{$key}{'value'}; + $storecontent{$prefix.$key.'.type'} = $defaults{$key}{'type'}; + } + &Apache::lonnet::cput + ('resourcedata',\%storecontent,$$crsudom,$$crsunum); + } + return (1,$outcome); } @@ -15034,7 +16252,7 @@ sub make_unique_code { my $tries = 0; my $gotlock = &Apache::lonnet::newput_dom('uniquecodes',$lockhash,$cdom); my ($code,$error); - + while (($gotlock ne 'ok') && ($tries<3)) { $tries ++; sleep 1; @@ -15081,8 +16299,7 @@ sub generate_code { ############################################################ ############################################################ -#SD -# only Community and Course, or anything else? +# Community, Course and Placement Test sub course_type { my ($cid) = @_; if (!defined($cid)) { @@ -15100,17 +16317,20 @@ sub group_term { my %names = ( 'Course' => 'group', 'Community' => 'group', + 'Placement' => 'group', ); return $names{$crstype}; } sub course_types { - my @types = ('official','unofficial','community','textbook'); + my @types = ('official','unofficial','community','textbook','placement','lti'); my %typename = ( official => 'Official course', unofficial => 'Unofficial course', community => 'Community', textbook => 'Textbook course', + placement => 'Placement test', + lti => 'LTI provider', ); return (\@types,\%typename); } @@ -15197,8 +16417,6 @@ sub init_user_environment { my $public=($username eq 'public' && $domain eq 'public'); -# See if old ID present, if so, remove - my ($filename,$cookie,$userroles,$firstaccenv,$timerintenv); my $now=time; @@ -15220,12 +16438,29 @@ sub init_user_environment { } if (!$cookie) { $cookie="publicuser_$oldest"; } } else { - # if this isn't a robot, kill any existing non-robot sessions + # See if old ID present, if so, remove if this isn't a robot, + # killing 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); + if ($ENV{'SERVER_PORT'} == 443) { + my $linkedfile; + if (tie(my %oldenv,'GDBM_File',"$lonids/$cookie.id", + &GDBM_READER(),0640)) { + if (exists($oldenv{'user.linkedenv'})) { + $linkedfile = $oldenv{'user.linkedenv'}; + } + untie(%oldenv); + } + if (unlink($lonids.'/'.$filename)) { + if ($linkedfile =~ /^[a-f0-9]+_linked\.id$/) { + unlink($lonids.'/'.$linkedfile); + } + } + } else { + unlink($lonids.'/'.$filename); + } } } closedir(DIR); @@ -15260,8 +16495,7 @@ sub init_user_environment { my %userenv = &Apache::lonnet::dump('environment',$domain,$username); my ($tmp) = keys(%userenv); - if ($tmp !~ /^(con_lost|error|no_such_host)/i) { - } else { + if ($tmp =~ /^(con_lost|error|no_such_host)/i) { undef(%userenv); } if (($userenv{'interface'}) && (!$form->{'interface'})) { @@ -15313,39 +16547,75 @@ sub init_user_environment { $env{'user.noloadbalance'} = $lonhost; } - my %is_adv = ( is_adv => $env{'user.adv'} ); - my %domdef; - unless ($domain eq 'public') { - %domdef = &Apache::lonnet::get_domain_defaults($domain); + if ($form->{'noloadbalance'}) { + my @hosts = &Apache::lonnet::current_machine_ids(); + my $hosthere = $form->{'noloadbalance'}; + if (grep(/^\Q$hosthere\E$/,@hosts)) { + $initial_env{"user.noloadbalance"} = $hosthere; + $env{'user.noloadbalance'} = $hosthere; + } } - foreach my $tool ('aboutme','blog','webdav','portfolio') { - $userenv{'availabletools.'.$tool} = - &Apache::lonnet::usertools_access($username,$domain,$tool,'reload', - undef,\%userenv,\%domdef,\%is_adv); - } + unless ($domain eq 'public') { + my %is_adv = ( is_adv => $env{'user.adv'} ); + my %domdef = &Apache::lonnet::get_domain_defaults($domain); - foreach my $crstype ('official','unofficial','community','textbook') { - $userenv{'canrequest.'.$crstype} = - &Apache::lonnet::usertools_access($username,$domain,$crstype, - 'reload','requestcourses', - \%userenv,\%domdef,\%is_adv); - } + foreach my $tool ('aboutme','blog','webdav','portfolio') { + $userenv{'availabletools.'.$tool} = + &Apache::lonnet::usertools_access($username,$domain,$tool,'reload', + undef,\%userenv,\%domdef,\%is_adv); + } - $userenv{'canrequest.author'} = - &Apache::lonnet::usertools_access($username,$domain,'requestauthor', - 'reload','requestauthor', - \%userenv,\%domdef,\%is_adv); - my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'], - $domain,$username); - my $reqstatus = $reqauthor{'author_status'}; - if ($reqstatus eq 'approval' || $reqstatus eq 'approved') { - if (ref($reqauthor{'author'}) eq 'HASH') { - $userenv{'requestauthorqueued'} = $reqstatus.':'. - $reqauthor{'author'}{'timestamp'}; + foreach my $crstype ('official','unofficial','community','textbook','placement','lti') { + $userenv{'canrequest.'.$crstype} = + &Apache::lonnet::usertools_access($username,$domain,$crstype, + 'reload','requestcourses', + \%userenv,\%domdef,\%is_adv); } - } + $userenv{'canrequest.author'} = + &Apache::lonnet::usertools_access($username,$domain,'requestauthor', + 'reload','requestauthor', + \%userenv,\%domdef,\%is_adv); + my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'], + $domain,$username); + my $reqstatus = $reqauthor{'author_status'}; + if ($reqstatus eq 'approval' || $reqstatus eq 'approved') { + if (ref($reqauthor{'author'}) eq 'HASH') { + $userenv{'requestauthorqueued'} = $reqstatus.':'. + $reqauthor{'author'}{'timestamp'}; + } + } + my ($types,$typename) = &course_types(); + if (ref($types) eq 'ARRAY') { + my @options = ('approval','validate','autolimit'); + my $optregex = join('|',@options); + my (%willtrust,%trustchecked); + foreach my $type (@{$types}) { + my $dom_str = $env{'environment.reqcrsotherdom.'.$type}; + if ($dom_str ne '') { + my $updatedstr = ''; + my @possdomains = split(',',$dom_str); + foreach my $entry (@possdomains) { + my ($extdom,$extopt) = split(':',$entry); + unless ($trustchecked{$extdom}) { + $willtrust{$extdom} = &Apache::lonnet::will_trust('reqcrs',$domain,$extdom); + $trustchecked{$extdom} = 1; + } + if ($willtrust{$extdom}) { + $updatedstr .= $entry.','; + } + } + $updatedstr =~ s/,$//; + if ($updatedstr) { + $userenv{'reqcrsotherdom.'.$type} = $updatedstr; + } else { + delete($userenv{'reqcrsotherdom.'.$type}); + } + } + } + } + } $env{'user.environment'} = "$lonids/$cookie.id"; if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id", @@ -15449,12 +16719,12 @@ and quotacheck.pl Inputs: -filterlist - anonymous array of fields to include as potential filters +filterlist - anonymous array of fields to include as potential filters crstype - course type roleelement - fifth arg in selectcourse_link() populates fifth arg in javascript: opencrsbrowser() function, used - to pop-open a course selector (will contain "extra element"). + to pop-open a course selector (will contain "extra element"). multelement - if multiple course selections will be allowed, this will be a hidden form element: name: multiple; value: 1 @@ -15470,19 +16740,19 @@ cloneruname - username of owner of new c clonerudom - domain of owner of new course who wants to clone -typeelem - text to use for left column in row containing course type (i.e., Course, Community or Course/Community) +typeelem - text to use for left column in row containing course type (i.e., Course, Community or Course/Community) codetitlesref - reference to array of titles of components in institutional codes (official courses) codedom - domain -formname - value of form element named "form". +formname - value of form element named "form". fixeddom - domain, if fixed. -prevphase - value to assign to form element named "phase" when going back to the previous screen +prevphase - value to assign to form element named "phase" when going back to the previous screen -cnameelement - name of form element in form on opener page which will receive title of selected course +cnameelement - name of form element in form on opener page which will receive title of selected course cnumelement - name of form element in form on opener page which will receive courseID of selected course @@ -15573,15 +16843,19 @@ sub build_filters { $createdfilterform = &timebased_select_form('createdfilter',$filter); } + my $prefix = $crstype; + if ($crstype eq 'Placement') { + $prefix = 'Placement Test' + } my %lt = &Apache::lonlocal::texthash( - 'cac' => "$crstype Activity", - 'ccr' => "$crstype Created", - 'cde' => "$crstype Title", - 'cdo' => "$crstype Domain", + 'cac' => "$prefix Activity", + 'ccr' => "$prefix Created", + 'cde' => "$prefix Title", + 'cdo' => "$prefix Domain", 'ins' => 'Institutional Code', 'inc' => 'Institutional Categorization', - 'cow' => "$crstype Owner/Co-owner", - 'cop' => "$crstype Personnel Includes", + 'cow' => "$prefix Owner/Co-owner", + 'cop' => "$prefix Personnel Includes", 'cog' => 'Type', ); @@ -15589,6 +16863,8 @@ sub build_filters { my $typeval = 'Course'; if ($crstype eq 'Community') { $typeval = 'Community'; + } elsif ($crstype eq 'Placement') { + $typeval = 'Placement'; } $typeselectform = ''; } else { @@ -15597,9 +16873,15 @@ sub build_filters { $typeselectform .= ' onchange="'.$onchange.'"'; } $typeselectform .= '>'."\n"; - foreach my $posstype ('Course','Community') { + foreach my $posstype ('Course','Community','Placement') { + my $shown; + if ($posstype eq 'Placement') { + $shown = &mt('Placement Test'); + } else { + $shown = &mt($posstype); + } $typeselectform.='\n"; + ($posstype eq $crstype ? ' selected="selected" ' : ''). ">".$shown."\n"; } $typeselectform.=""; } @@ -15624,7 +16906,7 @@ sub build_filters { if (exists($filter->{'instcodefilter'})) { # if (($fixeddom) || ($formname eq 'requestcrs') || # ($formname eq 'modifycourse') || ($formname eq 'filterpicker')) { - if ($codedom) { + if ($codedom) { $officialjs = 1; ($instcodeform,$jscript,$$numtitlesref) = &Apache::courseclassifier::instcode_selectors($codedom,'filterpicker', @@ -15753,7 +17035,7 @@ $typeelement return $jscript.$clonewarning.$output; } -=pod +=pod =item * &timebased_select_form() @@ -15768,7 +17050,7 @@ item - name of form element (sincefilter filter - anonymous hash of criteria and their values Returns: HTML for a select box contained a blank, then six time selections, - with value set in incoming form variables currently selected. + with value set in incoming form variables currently selected. Side Effects: None @@ -15805,7 +17087,7 @@ page load completion for page showing se Inputs: None -Returns: markup containing updateFilters() and hideSearching() javascript functions. +Returns: markup containing updateFilters() and hideSearching() javascript functions. Side Effects: None @@ -15844,7 +17126,7 @@ to retrieve a hash for which keys are co Inputs: -dom - domain being searched +dom - domain being searched type - course type ('Course' or 'Community' or '.' if any). @@ -15856,7 +17138,7 @@ cloneruname - optional username of new c clonerudom - optional domain of new course owner -domcloner - optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by, +domcloner - optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by, (used when DC is using course creation form) codetitles - reference to array of titles of components in institutional codes (official courses). @@ -15866,8 +17148,8 @@ cc_clone - escaped comma separated list reqcrsdom - domain of new course, where search_courses is used to identify potential courses to clone -reqinstcode - institutional code of new course, where search_courses is used to identify potential - courses to clone +reqinstcode - institutional code of new course, where search_courses is used to identify potential + courses to clone Returns: %courses - hash of courses satisfying search criteria, keys = course IDs, values are corresponding colon-separated escaped description, institutional code, owner and type. @@ -15950,7 +17232,7 @@ sub search_courses { if (ref($courses{$cid}) eq 'HASH') { if (ref($courses{$cid}{roles}) eq 'ARRAY') { if (!grep(/^\Q$courserole\E$/,@{$courses{$cid}{roles}})) { - push (@{$courses{$cid}{roles}},$courserole); + push(@{$courses{$cid}{roles}},$courserole); } } else { $courses{$cid}{roles} = [$courserole]; @@ -15993,8 +17275,8 @@ $required - LON-CAPA version needed by c Returns: -$switchserver - query string tp append to /adm/switchserver call (if - current server's LON-CAPA version is too old. +$switchserver - query string tp append to /adm/switchserver call (if + current server's LON-CAPA version is too old. $warning - Message is displayed if no suitable server could be found. @@ -16107,7 +17389,7 @@ Inputs: $loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp) $interval (optional) - Time which may elapse (in s) between last check for content - change in current course. (default: 600 s). + change in current course. (default: 600 s). Returns: an array; first element is: @@ -16115,9 +17397,9 @@ Returns: an array; first element is: 'switch' - if content updates mean user's session needs to be switched to a server running a newer LON-CAPA version - + 'update' - if course session needs to be refreshed (i.e., Big Hash needs to be reloaded) - on current server hosting user's session + on current server hosting user's session '' - if no action required. @@ -16125,10 +17407,10 @@ Returns: an array; first element is: If first item element is 'switch': -second item is $switchwarning - Warning message if no suitable server found to host session. +second item is $switchwarning - Warning message if no suitable server found to host session. third item is $switchserver - query string to append to /adm/switchserver containing lonHostID - and current role. + and current role. otherwise: no other elements returned. @@ -16146,8 +17428,12 @@ sub needs_coursereinit { $interval = 600; } if (($now-$env{'request.course.timechecked'})>$interval) { - my $lastchange = &Apache::lonnet::get_coursechange($cdom,$cnum); &Apache::lonnet::appenv({'request.course.timechecked'=>$now}); + my $blocked = &blocking_status('reinit',$cnum,$cdom,undef,1); + if ($blocked) { + return (); + } + my $lastchange = &Apache::lonnet::get_coursechange($cdom,$cnum); if ($lastchange > $env{'request.course.tied'}) { my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired'); if ($curr_reqd_hash{'internal.releaserequired'} ne '') { @@ -16173,19 +17459,31 @@ sub update_content_constraints { my ($cdom,$cnum,$chome,$cid) = @_; my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired'); my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'}); - my %checkresponsetypes; + my (%checkresponsetypes,%checkcrsrestypes); foreach my $key (keys(%Apache::lonnet::needsrelease)) { my ($item,$name,$value) = split(/:/,$key); if ($item eq 'resourcetag') { if ($name eq 'responsetype') { $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key} } + } elsif ($item eq 'course') { + if ($name eq 'courserestype') { + $checkcrsrestypes{$value} = $Apache::lonnet::needsrelease{$key}; + } } } my $navmap = Apache::lonnavmaps::navmap->new(); if (defined($navmap)) { - my %allresponses; - foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) { + my (%allresponses,%allcrsrestypes); + foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() || $_[0]->is_tool() },1,0)) { + if ($res->is_tool()) { + if ($allcrsrestypes{'exttool'}) { + $allcrsrestypes{'exttool'} ++; + } else { + $allcrsrestypes{'exttool'} = 1; + } + next; + } my %responses = $res->responseTypes(); foreach my $key (keys(%responses)) { next unless(exists($checkresponsetypes{$key})); @@ -16198,8 +17496,24 @@ sub update_content_constraints { ($reqdmajor,$reqdminor) = ($major,$minor); } } + foreach my $key (keys(%allcrsrestypes)) { + my ($major,$minor) = split(/\./,$checkcrsrestypes{$key}); + if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) { + ($reqdmajor,$reqdminor) = ($major,$minor); + } + } undef($navmap); } + my $suppmap = 'supplemental.sequence'; + my ($suppcount,$supptools,$errors) = (0,0,0); + ($suppcount,$supptools,$errors) = &recurse_supplemental($cnum,$cdom,$suppmap, + $suppcount,$supptools,$errors); + if ($supptools) { + my ($major,$minor) = split(/\./,$checkcrsrestypes{'exttool'}); + if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) { + ($reqdmajor,$reqdminor) = ($major,$minor); + } + } unless (($reqdmajor eq '') && ($reqdminor eq '')) { &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid); } @@ -16256,7 +17570,7 @@ sub parse_supplemental_title { } sub recurse_supplemental { - my ($cnum,$cdom,$suppmap,$numfiles,$errors) = @_; + my ($cnum,$cdom,$suppmap,$numfiles,$numexttools,$errors) = @_; if ($suppmap) { my ($errtext,$fatal) = &LONCAPA::map::mapread('/uploaded/'.$cdom.'/'.$cnum.'/'.$suppmap); if ($fatal) { @@ -16267,8 +17581,12 @@ sub recurse_supplemental { my ($title,$src,$ext,$type,$status)=split(/\:/,$res); if (($src ne '') && ($status eq 'res')) { if ($src =~ m{^\Q/uploaded/$cdom/$cnum/\E(supplemental_\d+\.sequence)$}) { - ($numfiles,$errors) = &recurse_supplemental($cnum,$cdom,$1,$numfiles,$errors); + ($numfiles,$numexttools,$errors) = &recurse_supplemental($cnum,$cdom,$1, + $numfiles,$numexttools,$errors); } else { + if ($src =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) { + $numexttools ++; + } $numfiles ++; } } @@ -16276,12 +17594,12 @@ sub recurse_supplemental { } } } - return ($numfiles,$errors); + return ($numfiles,$numexttools,$errors); } sub symb_to_docspath { - my ($symb) = @_; - return unless ($symb); + my ($symb,$navmapref) = @_; + return unless ($symb && ref($navmapref)); my ($mapurl,$id,$resurl) = &Apache::lonnet::decode_symb($symb); if ($resurl=~/\.(sequence|page)$/) { $mapurl=$resurl; @@ -16289,9 +17607,11 @@ sub symb_to_docspath { $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'}; } my $mapresobj; - my $navmap = Apache::lonnavmaps::navmap->new(); - if (ref($navmap)) { - $mapresobj = $navmap->getResourceByUrl($mapurl); + unless (ref($$navmapref)) { + $$navmapref = Apache::lonnavmaps::navmap->new(); + } + if (ref($$navmapref)) { + $mapresobj = $$navmapref->getResourceByUrl($mapurl); } $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1}; my $type=$2; @@ -16301,7 +17621,7 @@ sub symb_to_docspath { if ($pcslist ne '') { foreach my $pc (split(/,/,$pcslist)) { next if ($pc <= 1); - my $res = $navmap->getByMapPc($pc); + my $res = $$navmapref->getByMapPc($pc); if (ref($res)) { my $thisurl = $res->src(); $thisurl=~s{^.*/([^/]+)\.\w+$}{$1}; @@ -16350,7 +17670,7 @@ sub symb_to_docspath { sub captcha_display { my ($context,$lonhost) = @_; my ($output,$error); - my ($captcha,$pubkey,$privkey,$version) = + my ($captcha,$pubkey,$privkey,$version) = &get_captcha_config($context,$lonhost); if ($captcha eq 'original') { $output = &create_captcha(); @@ -16421,7 +17741,7 @@ sub get_captcha_config { $captcha = 'recaptcha'; $version = $domconfhash{$serverhomedom.'.login.recaptchaversion'}; if ($version ne '2') { - $version = 1; + $version = 1; } } else { $captcha = 'original'; @@ -16503,21 +17823,26 @@ sub create_recaptcha { &mt('If the text is hard to read, [_1] will replace them.', 'reCAPTCHA refresh'). '

    '; - } + } } sub check_recaptcha { my ($privkey,$version) = @_; my $captcha_chk; if ($version >= 2) { - my $ua = LWP::UserAgent->new; - $ua->timeout(10); my %info = ( - secret => $privkey, + secret => $privkey, response => $env{'form.g-recaptcha-response'}, remoteip => $ENV{'REMOTE_ADDR'}, ); - my $response = $ua->post('https://www.google.com/recaptcha/api/siteverify',\%info); + my $request=new HTTP::Request('POST','https://www.google.com/recaptcha/api/siteverify'); + $request->content(join('&',map { + my $name = escape($_); + "$name=" . ( ref($info{$_}) eq 'ARRAY' + ? join("&$name=", map {escape($_) } @{$info{$_}}) + : &escape($info{$_}) ); + } keys(%info))); + my $response = &LONCAPA::LWPReq::makerequest('',$request,'','',10,1); if ($response->is_success) { my $data = JSON::DWIW->from_json($response->decoded_content); if (ref($data) eq 'HASH') { @@ -16580,21 +17905,37 @@ sub cleanup_html { # Checks for critical messages and returns a redirect url if one exists. # $interval indicates how often to check for messages. +# $context is the calling context -- roles, grades, contents, menu or flip. sub critical_redirect { - my ($interval) = @_; + my ($interval,$context) = @_; if ((time-$env{'user.criticalcheck.time'})>$interval) { - my @what=&Apache::lonnet::dump('critical', $env{'user.domain'}, + if (($env{'request.course.id'}) && (($context eq 'flip') || ($context eq 'contents'))) { + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $blocked = &blocking_status('alert',$cnum,$cdom,undef,1); + if ($blocked) { + my $checkrole = "cm./$cdom/$cnum"; + if ($env{'request.course.sec'} ne '') { + $checkrole .= "/$env{'request.course.sec'}"; + } + unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) && + ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) { + return; + } + } + } + my @what=&Apache::lonnet::dump('critical', $env{'user.domain'}, $env{'user.name'}); &Apache::lonnet::appenv({'user.criticalcheck.time'=>time}); my $redirecturl; if ($what[0]) { - if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { - $redirecturl='/adm/email?critical=display'; - my $url=&Apache::lonnet::absolute_url().$redirecturl; + if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { + $redirecturl='/adm/email?critical=display'; + my $url=&Apache::lonnet::absolute_url().$redirecturl; return (1, $url); } } - } + } return (); } @@ -16648,6 +17989,142 @@ sub des_decrypt { return $plaintext; } +sub make_short_symbs { + my ($cdom,$cnum,$navmap) = @_; + return unless (ref($navmap)); + my ($numnew,@errors); + my @toshorten = &Apache::loncommon::get_env_multiple('form.addtiny'); + if (@toshorten) { + my (%maps,%resources,%titles); + &Apache::loncourserespicker::enumerate_course_contents($navmap,\%maps,\%resources,\%titles, + 'shorturls',$cdom,$cnum); + my %tocreate; + if (keys(%resources)) { + foreach my $item (sort {$a <=> $b} (@toshorten)) { + my $symb = $resources{$item}; + if ($symb) { + $tocreate{$cnum.'&'.$symb} = 1; + } + } + } + if (keys(%tocreate)) { + my %coursetiny = &Apache::lonnet::dump('tiny',$cdom,$cnum); + my $su = Short::URL->new(no_vowels => 1); + my $init = ''; + my (%newunique,%addcourse,%courseonly,%failed); + # get lock on tiny db + my $now = time; + my $lockhash = { + "lock\0$now" => $env{'user.name'}. + ':'.$env{'user.domain'}, + }; + my $tries = 0; + my $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom); + my ($code,$error); + while (($gotlock ne 'ok') && ($tries<3)) { + $tries ++; + sleep 1; + $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom); + } + if ($gotlock eq 'ok') { + $init = &shorten_symbs($cdom,$init,$su,\%coursetiny,\%tocreate,\%newunique, + \%addcourse,\%courseonly,\%failed); + if (keys(%failed)) { + my $numfailed = scalar(keys(%failed)); + push(@errors,&mt('error: could not obtain unique six character URL for [quant,_1,resource]',$numfailed)); + } + if (keys(%newunique)) { + my $putres = &Apache::lonnet::newput_dom('tiny',\%newunique,$cdom); + if ($putres eq 'ok') { + $numnew = scalar(keys(%newunique)); + my $newputres = &Apache::lonnet::newput('tiny',\%addcourse,$cdom,$cnum); + unless ($newputres eq 'ok') { + push(@errors,&mt('error: could not store course look-up of short URLs')); + } + } else { + push(@errors,&mt('error: could not store unique six character URLs')); + } + } + my $dellockres = &Apache::lonnet::del_dom('tiny',["lock\0$now"],$cdom); + unless ($dellockres eq 'ok') { + push(@errors,&mt('error: could not release lockfile')); + } + } else { + push(@errors,&mt('error: could not obtain lockfile')); + } + if (keys(%courseonly)) { + my $result = &Apache::lonnet::newput('tiny',\%courseonly,$cdom,$cnum); + if ($result ne 'ok') { + push(@errors,&mt('error: could not update course look-up of short URLs')); + } + } + } + } + return ($numnew,\@errors); +} + +sub shorten_symbs { + my ($cdom,$init,$su,$coursetiny,$tocreate,$newunique,$addcourse,$courseonly,$failed) = @_; + return unless ((ref($su)) && (ref($coursetiny) eq 'HASH') && (ref($tocreate) eq 'HASH') && + (ref($newunique) eq 'HASH') && (ref($addcourse) eq 'HASH') && + (ref($courseonly) eq 'HASH') && (ref($failed) eq 'HASH')); + my (%possibles,%collisions); + foreach my $key (keys(%{$tocreate})) { + my $num = String::CRC32::crc32($key); + my $tiny = $su->encode($num,$init); + if ($tiny) { + $possibles{$tiny} = $key; + } + } + if (!$init) { + $init = 1; + } else { + $init ++; + } + if (keys(%possibles)) { + my @posstiny = keys(%possibles); + my $configuname = &Apache::lonnet::get_domainconfiguser($cdom); + my %currtiny = &Apache::lonnet::get('tiny',\@posstiny,$cdom,$configuname); + if (keys(%currtiny)) { + foreach my $key (keys(%currtiny)) { + next if ($currtiny{$key} eq ''); + if ($currtiny{$key} eq $possibles{$key}) { + my ($tcnum,$tsymb) = split(/\&/,$currtiny{$key}); + unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) { + $courseonly->{$tsymb} = $key; + } + } else { + $collisions{$possibles{$key}} = 1; + } + delete($possibles{$key}); + } + } + foreach my $key (keys(%possibles)) { + $newunique->{$key} = $possibles{$key}; + my ($tcnum,$tsymb) = split(/\&/,$possibles{$key}); + unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) { + $addcourse->{$tsymb} = $key; + } + } + } + if (keys(%collisions)) { + if ($init <5) { + if (!$init) { + $init = 1; + } else { + $init ++; + } + $init = &shorten_symbs($cdom,$init,$su,$coursetiny,\%collisions, + $newunique,$addcourse,$courseonly,$failed); + } else { + foreach my $key (keys(%collisions)) { + $failed->{$key} = 1; + } + } + } + return $init; +} + 1; __END__;