--- loncom/lonnet/perl/lonnet.pm 2002/08/09 18:12:19 1.265 +++ loncom/lonnet/perl/lonnet.pm 2003/03/06 22:41:41 1.334 @@ -1,7 +1,7 @@ # The LearningOnline Network # TCP networking package # -# $Id: lonnet.pm,v 1.265 2002/08/09 18:12:19 albertel Exp $ +# $Id: lonnet.pm,v 1.334 2003/03/06 22:41:41 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -47,23 +47,18 @@ # 09/01 Guy Albertelli # 09/01,10/01,11/01 Gerd Kortemeyer # YEAR=2001 -# 02/27/01 Scott Harrison # 3/2 Gerd Kortemeyer -# 3/15,3/19 Scott Harrison # 3/19,3/20 Gerd Kortemeyer -# 3/22,3/27,4/2,4/16,4/17 Scott Harrison # 5/26,5/28 Gerd Kortemeyer # 5/30 H. K. Ng # 6/1 Gerd Kortemeyer # July Guy Albertelli # 8/4,8/7,8/8,8/9,8/11,8/16,8/17,8/18,8/20,8/23,9/20,9/21,9/26, # 10/2 Gerd Kortemeyer -# 10/5,10/10,11/13,11/15 Scott Harrison # 11/17,11/20,11/22,11/29 Gerd Kortemeyer # 12/5 Matthew Hall # 12/5 Guy Albertelli # 12/6,12/7,12/12 Gerd Kortemeyer -# 12/18 Scott Harrison # 12/21,12/22,12/27,12/28 Gerd Kortemeyer # YEAR=2002 # 1/4,2/4,2/7 Gerd Kortemeyer @@ -77,15 +72,18 @@ use Apache::File; use LWP::UserAgent(); use HTTP::Headers; use vars -qw(%perlvar %hostname %homecache %badServerCache %hostip %spareid %hostdom - %libserv %pr %prp %metacache %packagetab +qw(%perlvar %hostname %homecache %badServerCache %hostip %iphost %spareid %hostdom + %libserv %pr %prp %metacache %packagetab %titlecache %courselogs %accesshash $processmarker $dumpcount - %coursedombuf %coursehombuf %courseresdatacache %domaindescription); + %coursedombuf %coursehombuf %courseresdatacache + %domaindescription %domain_auth_def %domain_auth_arg_def $tmpdir); use IO::Socket; use GDBM_File; use Apache::Constants qw(:common :http); use HTML::LCParser; use Fcntl qw(:flock); +use Apache::loncoursedata; + my $readit; # --------------------------------------------------------------------- Logging @@ -140,9 +138,9 @@ sub reply { unless (defined($hostname{$server})) { return 'no_such_host'; } my $answer=subreply($cmd,$server); if ($answer eq 'con_lost') { - #sleep 5; - #$answer=subreply($cmd,$server); - #if ($answer eq 'con_lost') { + #sleep 5; + #$answer=subreply($cmd,$server); + #if ($answer eq 'con_lost') { # &logthis("Second attempt con_lost on $server"); # my $peerfile="$perlvar{'lonSockDir'}/$server"; # my $client=IO::Socket::UNIX->new(Peer =>"$peerfile", @@ -213,7 +211,8 @@ sub critical { $middlename=substr($middlename,0,16); $middlename=~s/\W//g; my $dfilename= - "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server"; + "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server"; + $dumpcount++; { my $dfh; if ($dfh=Apache::File->new(">$dfilename")) { @@ -348,12 +347,36 @@ sub delenv { return 'ok'; } +# ------------------------------------------ Fight off request when overloaded + +sub overloaderror { + my ($r,$checkserver)=@_; + unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; } + my $loadavg; + if ($checkserver eq $perlvar{'lonHostID'}) { + my $loadfile=Apache::File->new('/proc/loadavg'); + $loadavg=<$loadfile>; + $loadavg =~ s/\s.*//g; + $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'}; + } else { + $loadavg=&reply('load',$checkserver); + } + my $overload=$loadavg-100; + if ($overload>0) { + $r->err_headers_out->{'Retry-After'}=$overload; + $r->log_error('Overload of '.$overload.' on '.$checkserver); + return 413; + } + return ''; +} + # ------------------------------ Find server with least workload from spare.tab sub spareserver { + my $loadpercent = shift; my $tryserver; my $spareserver=''; - my $lowestserver=100; + my $lowestserver=$loadpercent; foreach $tryserver (keys %spareid) { my $answer=reply('load',$tryserver); if (($answer =~ /\d/) && ($answer<$lowestserver)) { @@ -567,6 +590,59 @@ sub idput { # ------------------------------------- Find the section of student in a course +sub getsection { + my ($udom,$unam,$courseid)=@_; + $courseid=~s/\_/\//g; + $courseid=~s/^(\w)/\/$1/; + my %Pending; + my %Expired; + # + # Each role can either have not started yet (pending), be active, + # or have expired. + # + # If there is an active role, we are done. + # + # If there is more than one role which has not started yet, + # choose the one which will start sooner + # If there is one role which has not started yet, return it. + # + # If there is more than one expired role, choose the one which ended last. + # If there is a role which has expired, return it. + # + foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles', + &homeserver($unam,$udom)))) { + my ($key,$value)=split(/\=/,$_); + $key=&unescape($key); + next if ($key !~/^$courseid(?:\/)*(\w+)*\_st$/); + my $section=$1; + if ($key eq $courseid.'_st') { $section=''; } + my ($dummy,$end,$start)=split(/\_/,&unescape($value)); + my $now=time; + if (defined($end) && ($now > $end)) { + $Expired{$end}=$section; + next; + } + if (defined($start) && ($now < $start)) { + $Pending{$start}=$section; + next; + } + return $section; + } + # + # Presumedly there will be few matching roles from the above + # loop and the sorting time will be negligible. + if (scalar(keys(%Pending))) { + my ($time) = sort {$a <=> $b} keys(%Pending); + return $Pending{$time}; + } + if (scalar(keys(%Expired))) { + my @sorted = sort {$a <=> $b} keys(%Expired); + my $time = pop(@sorted); + return $Expired{$time}; + } + return '-1'; +} + sub usection { my ($udom,$unam,$courseid)=@_; $courseid=~s/\_/\//g; @@ -620,15 +696,40 @@ sub chatsend { &escape($newentry)),$chome); } +# ------------------------------------------ Find current version of a resource + +sub getversion { + my $fname=&clutter(shift); + unless ($fname=~/^\/res\//) { return -1; } + return ¤tversion(&filelocation('',$fname)); +} + +sub currentversion { + my $fname=shift; + my $author=$fname; + $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/; + my ($udom,$uname)=split(/\//,$author); + my $home=homeserver($uname,$udom); + if ($home eq 'no_host') { + return -1; + } + my $answer=reply("currentversion:$fname",$home); + if (($answer eq 'con_lost') || ($answer eq 'rejected')) { + return -1; + } + return $answer; +} + # ----------------------------- Subscribe to a resource, return URL if possible sub subscribe { my $fname=shift; + if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; } my $author=$fname; $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/; my ($udom,$uname)=split(/\//,$author); my $home=homeserver($uname,$udom); - if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) { + if ($home eq 'no_host') { return 'not_found'; } my $answer=reply("sub:$fname",$home); @@ -659,6 +760,11 @@ sub repcopy { } elsif ($remoteurl eq 'directory') { return OK; } else { + my $author=$filename; + $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/; + my ($udom,$uname)=split(/\//,$author); + my $home=homeserver($uname,$udom); + unless ($home eq $perlvar{'lonHostID'}) { my @parts=split(/\//,$filename); my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]"; if ($path ne "$perlvar{'lonDocRoot'}/res") { @@ -694,9 +800,22 @@ sub repcopy { rename($transname,$filename); return OK; } + } } } +# ------------------------------------------------ Get server side include body +sub ssi_body { + my $filelink=shift; + my $output=($filelink=~/^http\:/?&externalssi($filelink): + &ssi($filelink)); + $output=~s/^.*\]*\>//si; + $output=~s/\<\/body\s*\>.*$//si; + $output=~ + s/\/\/ BEGIN LON\-CAPA Internal.+\/\/ END LON\-CAPA Internal\s//gs; + return $output; +} + # --------------------------------------------------------- Server Side Include sub ssi { @@ -720,6 +839,14 @@ sub ssi { return $response->content; } +sub externalssi { + my ($url)=@_; + my $ua=new LWP::UserAgent; + my $request=new HTTP::Request('GET',$url); + my $response=$ua->request($request); + return $response->content; +} + # ------- Add a token to a remote URI's query string to vouch for access rights sub tokenwrapper { @@ -731,7 +858,8 @@ sub tokenwrapper { if ($uri=~/^uploaded\/([^\/]+)\/([^\/]+)\/([^\/]+)(\?\.*)*$/) { &appenv('userfile.'.$1.'/'.$2.'/'.$3 => $ENV{'request.course.id'}); return 'http://'.$hostname{ &homeserver($2,$1)}.'/'.$uri. - (($uri=~/\?/)?'&':'?').'token='.$token; + (($uri=~/\?/)?'&':'?').'token='.$token. + '&tokenissued='.$perlvar{'lonHostID'}; } else { return '/adm/notfound.html'; } @@ -744,8 +872,15 @@ sub tokenwrapper { sub userfileupload { my ($formname,$coursedoc)=@_; my $fname=$ENV{'form.'.$formname.'.filename'}; +# Replace Windows backslashes by forward slashes $fname=~s/\\/\//g; +# Get rid of everything but the actual filename $fname=~s/^.*\/([^\/]+)$/$1/; +# Replace spaces by underscores + $fname=~s/\s+/\_/g; +# Replace all other weird characters by nothing + $fname=~s/[^\w\.\-]//g; +# See if there is anything left unless ($fname) { return 'error: no uploaded file'; } chop($ENV{'form.'.$formname}); # Create the directory if not present @@ -761,6 +896,12 @@ sub userfileupload { $docudom=$ENV{'user.domain'}; $docuhome=$ENV{'user.home'}; } + return + &finishuserfileupload($docuname,$docudom,$docuhome,$formname,$fname); +} + +sub finishuserfileupload { + my ($docuname,$docudom,$docuhome,$formname,$fname)=@_; my $path=$docudom.'/'.$docuname.'/'; my $filepath=$perlvar{'lonDocRoot'}; my @parts=split(/\//,$filepath.'/userfiles/'.$path); @@ -778,13 +919,16 @@ sub userfileupload { } # Notify homeserver to grep it # - if -(&reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$fname,$docuhome) eq 'ok') - { + + my $fetchresult= + &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$fname,$docuhome); + if ($fetchresult eq 'ok') { # # Return the URL to it return '/uploaded/'.$path.$fname; } else { + &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$fname. + ' to host '.$docuhome.': '.$fetchresult); return '/adm/notfound.html'; } } @@ -820,7 +964,7 @@ sub flushcourselogs { my $entry=$_; $entry=~/\_\_\_(\w+)\/(\w+)\/(.*)\_\_\_(\w+)$/; my %temphash=($entry => $accesshash{$entry}); - if (&Apache::lonnet::put('resevaldata',\%temphash,$1,$2) eq 'ok') { + if (&Apache::lonnet::put('nohist_resevaldata',\%temphash,$1,$2) eq 'ok') { delete $accesshash{$entry}; } } @@ -865,7 +1009,7 @@ sub countacc { my $url=&declutter(shift); unless ($ENV{'request.course.id'}) { return ''; } $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1; - my $key=$processmarker.'_'.$dumpcount.'___'.$url.'___count'; + my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count'; if (defined($accesshash{$key})) { $accesshash{$key}++; } else { @@ -980,12 +1124,16 @@ sub expirespread { # ----------------------------------------------------- Devalidate Spreadsheets sub devalidate { - my $symb=shift; + my ($symb,$uname,$udom)=@_; my $cid=$ENV{'request.course.id'}; if ($cid) { - my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':'; +# delete the stored spreadsheets for +# - the student level sheet of this user in course's homespace +# - the assessment level sheet for this resource +# for this user in user's homespace + my $key=$uname.':'.$udom.':'; my $status= - &del('nohist_calculatedsheet', + &del('nohist_calculatedsheets', [$key.'studentcalc'], $ENV{'course.'.$cid.'.domain'}, $ENV{'course.'.$cid.'.num'}) @@ -994,7 +1142,7 @@ sub devalidate { [$key.'assesscalc:'.$symb]); unless ($status eq 'ok ok') { &logthis('Could not devalidate spreadsheet '. - $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '. + $uname.' at '.$udom.' for '. $symb.': '.$status); } } @@ -1114,7 +1262,7 @@ sub str2hashref { } } else { $string =~ s/^(.*?)=//; - $key=$1 + $key=&unescape($1); } $string =~ s/^=//; @@ -1326,7 +1474,10 @@ sub store { $symb=&symbclean($symb); if (!$symb) { unless ($symb=&symbread()) { return ''; } } - &devalidate($symb); + if (!$domain) { $domain=$ENV{'user.domain'}; } + if (!$stuname) { $stuname=$ENV{'user.name'}; } + + &devalidate($symb,$stuname,$domain); $symb=escape($symb); if (!$namespace) { @@ -1334,8 +1485,6 @@ sub store { return ''; } } - if (!$domain) { $domain=$ENV{'user.domain'}; } - if (!$stuname) { $stuname=$ENV{'user.name'}; } if (!$home) { $home=$ENV{'user.home'}; } my $namevalue=''; foreach (keys %$storehash) { @@ -1357,7 +1506,10 @@ sub cstore { $symb=&symbclean($symb); if (!$symb) { unless ($symb=&symbread()) { return ''; } } - &devalidate($symb); + if (!$domain) { $domain=$ENV{'user.domain'}; } + if (!$stuname) { $stuname=$ENV{'user.name'}; } + + &devalidate($symb,$stuname,$domain); $symb=escape($symb); if (!$namespace) { @@ -1365,8 +1517,6 @@ sub cstore { return ''; } } - if (!$domain) { $domain=$ENV{'user.domain'}; } - if (!$stuname) { $stuname=$ENV{'user.name'}; } if (!$home) { $home=$ENV{'user.home'}; } my $namevalue=''; @@ -1424,29 +1574,31 @@ sub coursedescription { $courseid=~s/\_/\//g; my ($cdomain,$cnum)=split(/\//,$courseid); my $chome=&homeserver($cnum,$cdomain); + my $normalid=$cdomain.'_'.$cnum; + # need to always cache even if we get errors otherwise we keep + # trying and trying and trying to get the course description. + my %envhash=(); + my %returnhash=(); + $envhash{'course.'.$normalid.'.last_cache'}=time; if ($chome ne 'no_host') { - my %returnhash=&dump('environment',$cdomain,$cnum); + %returnhash=&dump('environment',$cdomain,$cnum); if (!exists($returnhash{'con_lost'})) { - my $normalid=$cdomain.'_'.$cnum; - my %envhash=(); $returnhash{'home'}= $chome; $returnhash{'domain'} = $cdomain; $returnhash{'num'} = $cnum; while (my ($name,$value) = each %returnhash) { $envhash{'course.'.$normalid.'.'.$name}=$value; } - $returnhash{'url'}='/res/'.declutter($returnhash{'url'}); + $returnhash{'url'}=&clutter($returnhash{'url'}); $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'. $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum; - $envhash{'course.'.$normalid.'.last_cache'}=time; $envhash{'course.'.$normalid.'.home'}=$chome; $envhash{'course.'.$normalid.'.domain'}=$cdomain; $envhash{'course.'.$normalid.'.num'}=$cnum; - &appenv(%envhash); - return %returnhash; } } - return (); + &appenv(%envhash); + return %returnhash; } # -------------------------------------------------------- Get user privileges @@ -1563,6 +1715,9 @@ sub get { my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome); my @pairs=split(/\&/,$rep); + if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) { + return @pairs; + } my %returnhash=(); my $i=0; foreach (@$storearr) { @@ -1610,6 +1765,58 @@ sub dump { return %returnhash; } +# --------------------------------------------------------------- currentdump +sub currentdump { + my ($courseid,$sdom,$sname)=@_; + $courseid = $ENV{'request.course.id'} if (! defined($courseid)); + $sdom = $ENV{'user.domain'} if (! defined($sdom)); + $sname = $ENV{'user.name'} if (! defined($sname)); + my $uhome = &homeserver($sname,$sdom); + my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome); + return if ($rep =~ /^(error:|no_such_host)/); + # + my %returnhash=(); + # + if ($rep eq "unknown_cmd") { + # an old lond will not know currentdump + # Do a dump and make it look like a currentdump + my @tmp = &dump($courseid,$sdom,$sname,'.'); + return if ($tmp[0] =~ /^(error:|no_such_host)/); + my %hash = @tmp; + @tmp=(); + # Code ripped from lond, essentially. The only difference + # here is the unescaping done by lonnet::dump(). Conceivably + # we might run in to problems with parameter names =~ /^v\./ + while (my ($key,$value) = each(%hash)) { + my ($v,$symb,$param) = split(/:/,$key); + next if ($v eq 'version' || $symb eq 'keys'); + next if (exists($returnhash{$symb}) && + exists($returnhash{$symb}->{$param}) && + $returnhash{$symb}->{'v.'.$param} > $v); + $returnhash{$symb}->{$param}=$value; + $returnhash{$symb}->{'v.'.$param}=$v; + } + # + # Remove all of the keys in the hashes which keep track of + # the version of the parameter. + while (my ($symb,$param_hash) = each(%returnhash)) { + # use a foreach because we are going to delete from the hash. + foreach my $key (keys(%$param_hash)) { + delete($param_hash->{$key}) if ($key =~ /^v\./); + } + } + } else { + my @pairs=split(/\&/,$rep); + foreach (@pairs) { + my ($key,$value)=split(/=/,$_); + my ($symb,$param) = split(/:/,$key); + $returnhash{&unescape($symb)}->{&unescape($param)} = + &unescape($value); + } + } + return %returnhash; +} + # --------------------------------------------------------------- put interface sub put { @@ -1681,7 +1888,9 @@ sub allowed { if ($priv eq 'bre') { my $copyright=&metadata($uri,'copyright'); - if ($copyright eq 'public') { return 'F'; } + if (($copyright eq 'public') && (!$ENV{'request.course.id'})) { + return 'F'; + } if ($copyright eq 'priv') { $uri=~/([^\/]+)\/([^\/]+)\//; unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) { @@ -1735,6 +1944,12 @@ sub allowed { $thisallowed.=$1; } +# URI is an uploaded document for this course + + if (($priv eq 'bre') && + ($uri=~/^uploaded\/$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}\/$ENV{'course.'.$ENV{'request.course.id'}.'.num'}/)) { + return 'F'; + } # Full access at system, domain or course-wide level? Exit. if ($thisallowed=~/F/) { @@ -1953,14 +2168,16 @@ sub is_on_map { my @uriparts=split(/\//,$uri); my $filename=$uriparts[$#uriparts]; my $pathname=$uri; - $pathname=~s/\/$filename$//; + $pathname=~s|/\Q$filename\E$||; + $pathname=~s/^adm\/wrapper\///; + #Trying to find the conditional for the file my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~ - /\&$filename\:([\d\|]+)\&/); + /\&\Q$filename\E\:([\d\|]+)\&/); if ($match) { - return (1,$1); - } else { - return (0,0); - } + return (1,$1); + } else { + return (0,0); + } } # ----------------------------------------------------------------- Define Role @@ -2137,7 +2354,8 @@ sub modifyuserauth { my $uhome=&homeserver($uname,$udom); unless (&allowed('mau',$udom)) { return 'refused'; } &logthis('Call to modify user authentication '.$udom.', '.$uname.', '. - $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}); + $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}. + ' in domain '.$ENV{'request.role.domain'}); my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'. &escape($upass),$uhome); &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'}, @@ -2168,7 +2386,8 @@ sub modifyuser { $last.', '.$gene.'(forceid: '.$forceid.')'. (defined($desiredhome) ? ' desiredhome = '.$desiredhome : ' desiredhome not specified'). - ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}); + ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'}. + ' in domain '.$ENV{'request.role.domain'}); my $uhome=&homeserver($uname,$udom,'true'); # ----------------------------------------------------------------- Create User if (($uhome eq 'no_host') && ($umode) && ($upass)) { @@ -2218,10 +2437,15 @@ sub modifyuser { } } # -------------------------------------------------------------- Add names, etc - my %names=&get('environment', + my @tmp=&get('environment', ['firstname','middlename','lastname','generation'], $udom,$uname); - if ($names{'firstname'} =~ m/^error:.*/) { %names=(); } + my %names; + if ($tmp[0] =~ m/^error:.*/) { + %names=(); + } else { + %names = @tmp; + } if ($first) { $names{'firstname'} = $first; } if ($middle) { $names{'middlename'} = $middle; } if ($last) { $names{'lastname'} = $last; } @@ -2249,20 +2473,59 @@ sub modifystudent { ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid, $desiredhome); unless ($reply eq 'ok') { return $reply; } + # This will cause &modify_student_enrollment to get the uid from the + # students environment + $uid = undef if (!$forceid); + $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle, + $last,$gene,$usec,$end,$start); + return $reply; +} + +sub modify_student_enrollment { + my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start) = @_; + # Get the course id from the environment + my $cid=''; + unless ($cid=$ENV{'request.course.id'}) { + return 'not_in_class'; + } + # Make sure the user exists my $uhome=&homeserver($uname,$udom); if (($uhome eq '') || ($uhome eq 'no_host')) { return 'error: no such user'; } -# -------------------------------------------------- Add student to course list - $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'. + # + # Get student data if we were not given enough information + if (!defined($first) || $first eq '' || + !defined($last) || $last eq '' || + !defined($uid) || $uid eq '' || + !defined($middle) || $middle eq '' || + !defined($gene) || $gene eq '') { + # They did not supply us with enough data to enroll the student, so + # we need to pick up more information. + my %tmp = &get('environment', + ['firstname','middlename','lastname', 'generation','id'] + ,$udom,$uname); + + foreach (keys(%tmp)) { + &logthis("key $_ = ".$tmp{$_}); + } + $first = $tmp{'firstname'} if (!defined($first) || $first eq ''); + $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq ''); + $last = $tmp{'lastname'} if (!defined($last) || $last eq ''); + $gene = $tmp{'generation'} if (!defined($gene) || $gene eq ''); + $uid = $tmp{'id'} if (!defined($uid) || $uid eq ''); + } + my $fullname = &Apache::loncoursedata::ProcessFullName($last,$gene, + $first,$middle); + my $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'. $ENV{'course.'.$cid.'.num'}.':classlist:'. &escape($uname.':'.$udom).'='. - &escape($end.':'.$start), + &escape(join(':',$end,$start,$uid,$usec,$fullname)), $ENV{'course.'.$cid.'.home'}); unless (($reply eq 'ok') || ($reply eq 'delayed')) { return 'error: '.$reply; } -# ---------------------------------------------------- Add student role to user + # Add student role to user my $uurl='/'.$cid; $uurl=~s/\_/\//g; if ($usec) { @@ -2293,7 +2556,7 @@ sub writecoursepref { # ---------------------------------------------------------- Make/modify course sub createcourse { - my ($udom,$description,$url,$course_server)=@_; + my ($udom,$description,$url,$course_server,$nonstandard)=@_; $url=&declutter($url); my $cid=''; unless (&allowed('ccc',$udom)) { @@ -2325,9 +2588,29 @@ sub createcourse { if (($uhome eq '') || ($uhome eq 'no_host')) { return 'error: no such course'; } +# ----------------------------------------------------------------- Course made + my $topurl=$url; + unless ($nonstandard) { +# ------------------------------------------ For standard courses, make top url + my $mapurl=&clutter($url); + if ($mapurl eq '/res/') { $mapurl=''; } + $ENV{'form.initmap'}=(< + + + + + + +ENDINITMAP + $topurl=&declutter( + &finishuserfileupload($uname,$udom,$uhome,'initmap','default.sequence') + ); + } +# ----------------------------------------------------------- Write preferences &writecoursepref($udom.'_'.$uname, ('description' => $description, - 'url' => $url)); + 'url' => $topurl)); return '/'.$udom.'/'.$uname; } @@ -2428,6 +2711,30 @@ sub dirlist { } } +# --------------------------------------------- GetFileTimestamp +# This function utilizes dirlist and returns the date stamp for +# when it was last modified. It will also return an error of -1 +# if an error occurs + +sub GetFileTimestamp { + my ($studentDomain,$studentName,$filename,$root)=@_; + $studentDomain=~s/\W//g; + $studentName=~s/\W//g; + my $subdir=$studentName.'__'; + $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; + my $proname="$studentDomain/$subdir/$studentName"; + $proname .= '/'.$filename; + my @dir = &Apache::lonnet::dirlist($proname, $studentDomain, $studentName, + $root); + my $fileStat = $dir[0]; + my @stats = split('&', $fileStat); + if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') { + return $stats[9]; + } else { + return -1; + } +} + # -------------------------------------------------------- Value of a Condition sub directcondval { @@ -2480,6 +2787,14 @@ sub condval { return $result; } +# ---------------------------------------------------- Devalidate courseresdata + +sub devalidatecourseresdata { + my ($coursenum,$coursedomain)=@_; + my $hashid=$coursenum.':'.$coursedomain; + delete $courseresdatacache{$hashid.'.time'}; +} + # --------------------------------------------------- Course Resourcedata Query sub courseresdata { @@ -2498,20 +2813,22 @@ sub courseresdata { if ($tmp !~ /^(con_lost|error|no_such_host)/i) { $courseresdatacache{$hashid.'.time'}=time; $courseresdatacache{$hashid}=\%dumpreply; + } elsif ($tmp =~ /^(con_lost|no_such_host)/) { + return $tmp; } } foreach my $item (@which) { - if ($courseresdatacache{$hashid}->{$item}) { + if (defined($courseresdatacache{$hashid}->{$item})) { return $courseresdatacache{$hashid}->{$item}; } } - return ''; + return undef; } # --------------------------------------------------------- Value of a Variable sub EXT { - my ($varname,$symbparm,$udom,$uname)=@_; + my ($varname,$symbparm,$udom,$uname,)=@_; unless ($varname) { return ''; } @@ -2523,14 +2840,14 @@ sub EXT { } else { $courseid=$ENV{'request.course.id'}; } - my ($realm,$space,$qualifier,@therest)=split(/\./,$varname); my $rest; - if ($therest[0]) { + if (defined($therest[0])) { $rest=join('.',@therest); } else { $rest=''; } + my $qualifierrest=$qualifier; if ($rest) { $qualifierrest.='.'.$rest; } my $spacequalifierrest=$space; @@ -2624,24 +2941,35 @@ sub EXT { my $courselevelm=$courseid.'.'.$mapparm; # ----------------------------------------------------------- first, check user - my %resourcedata=&get('resourcedata', - [$courselevelr,$courselevelm,$courselevel], - $udom,$uname); - if (($resourcedata{$courselevelr}!~/^error\:/) && - ($resourcedata{$courselevelr}!~/^con_lost/)) { - - if ($resourcedata{$courselevelr}) { - return $resourcedata{$courselevelr}; } - if ($resourcedata{$courselevelm}) { - return $resourcedata{$courselevelm}; } - if ($resourcedata{$courselevel}) { - return $resourcedata{$courselevel}; } - } else { - if ($resourcedata{$courselevelr}!~/No such file/) { - &logthis("WARNING:". - " Trying to get resource data for ". - $uname." at ".$udom.": ". - $resourcedata{$courselevelr}.""); + #most student don't have any data set, check if there is some data + #every thirty minutes + if (! + (exists($ENV{'cache.studentresdata'}) + && (($ENV{'cache.studentresdata'}+1800) > time))) { + my %resourcedata=&get('resourcedata', + [$courselevelr,$courselevelm,$courselevel], + $udom,$uname); + my ($tmp)=keys(%resourcedata); + if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) { + if ($resourcedata{$courselevelr}) { + return $resourcedata{$courselevelr}; } + if ($resourcedata{$courselevelm}) { + return $resourcedata{$courselevelm}; } + if ($resourcedata{$courselevel}) { + return $resourcedata{$courselevel}; } + } else { + if ($tmp!~/No such file/) { + &logthis("WARNING:". + " Trying to get resource data for ". + $uname." at ".$udom.": ". + $tmp.""); + } elsif ($tmp=~/error:No such file/) { + $ENV{'cache.studentresdata'}=time; + &appenv(('cache.studentresdata'=> + $ENV{'cache.studentresdata'})); + } elsif ($tmp =~ /^(con_lost|no_such_host)/) { + return $tmp; + } } } @@ -2652,7 +2980,7 @@ sub EXT { ($seclevelr,$seclevelm,$seclevel, $courselevelr,$courselevelm, $courselevel)); - if ($coursereply) { return $coursereply; } + if (defined($coursereply)) { return $coursereply; } # ------------------------------------------------------ third, check map parms my %parmhash=(); @@ -2668,11 +2996,17 @@ sub EXT { # --------------------------------------------- last, look in resource metadata $spacequalifierrest=~s/\./\_/; - my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest); - if ($metadata) { return $metadata; } - $metadata=&metadata($ENV{'request.filename'}, - 'parameter_'.$spacequalifierrest); - if ($metadata) { return $metadata; } + my $filename; + if (!$symbparm) { $symbparm=&symbread(); } + if ($symbparm) { + $filename=(split(/\_\_\_/,$symbparm))[2]; + } else { + $filename=$ENV{'request.filename'}; + } + my $metadata=&metadata($filename,$spacequalifierrest); + if (defined($metadata)) { return $metadata; } + $metadata=&metadata($filename,'parameter_'.$spacequalifierrest); + if (defined($metadata)) { return $metadata; } # ------------------------------------------------------------------ Cascade up unless ($space eq '0') { @@ -2680,11 +3014,11 @@ sub EXT { if ($id) { my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest, $symbparm,$udom,$uname); - if ($partgeneral) { return $partgeneral; } + if (defined($partgeneral)) { return $partgeneral; } } else { my $resourcegeneral=&EXT('resource.0.'.$qualifierrest, $symbparm,$udom,$uname); - if ($resourcegeneral) { return $resourcegeneral; } + if (defined($resourcegeneral)) { return $resourcegeneral; } } } @@ -2707,12 +3041,33 @@ sub EXT { return ''; } +sub add_prefix_and_part { + my ($prefix,$part)=@_; + my $keyroot; + if (defined($prefix) && $prefix !~ /^__/) { + # prefix that has a part already + $keyroot=$prefix; + } elsif (defined($prefix)) { + # prefix that is missing a part + if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); } + } else { + # no prefix at all + if (defined($part)) { $keyroot='_'.$part; } + } + return $keyroot; +} + # ---------------------------------------------------------------- Get metadata sub metadata { my ($uri,$what,$liburi,$prefix,$depthcount)=@_; $uri=&declutter($uri); + # if it is a non metadata possible uri return quickly + if (($uri eq '') || (($uri =~ m|^/*adm/|) && ($uri !~ m|^adm/includes|)) || + ($uri =~ m|/$|) || ($uri =~ m|/.meta$|)) { + return ''; + } my $filename=$uri; $uri=~s/\.meta$//; # @@ -2720,7 +3075,7 @@ sub metadata { # Look at timestamp of caching # Everything is cached by the main uri, libraries are never directly cached # - unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600) { + unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600 && !defined($liburi)) { # # Is this a recursive call for a library? # @@ -2741,14 +3096,7 @@ sub metadata { # This is a package - get package info # my $package=$token->[2]->{'package'}; - my $keyroot=''; - if ($prefix) { - $keyroot.='_'.$prefix; - } else { - if (defined($token->[2]->{'part'})) { - $keyroot.='_'.$token->[2]->{'part'}; - } - } + my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'}); if (defined($token->[2]->{'id'})) { $keyroot.='_'.$token->[2]->{'id'}; } @@ -2769,9 +3117,12 @@ sub metadata { my $unikey='parameter'.$keyroot.'_'.$name; $metathesekeys{$unikey}=1; $metacache{$uri.':'.$unikey.'.part'}=$part; - unless - (defined($metacache{$uri.':'.$unikey.'.'.$subp})) { - $metacache{$uri.':'.$unikey.'.'.$subp}=$value; + unless (defined($metacache{$uri.':'.$unikey.'.'.$subp})) { + $metacache{$uri.':'.$unikey.'.'.$subp}=$value; + } + if (defined($metacache{$uri.':'.$unikey.'.default'})) { + $metacache{$uri.':'.$unikey}= + $metacache{$uri.':'.$unikey.'.default'} } } } @@ -2786,13 +3137,8 @@ sub metadata { } else { $unikey=$entry; } - if ($prefix) { - $unikey.=$prefix; - } else { - if (defined($token->[2]->{'part'})) { - $unikey.='_'.$token->[2]->{'part'}; - } - } + $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'}); + if (defined($token->[2]->{'id'})) { $unikey.='_'.$token->[2]->{'id'}; } @@ -2801,12 +3147,14 @@ sub metadata { # # Importing a library here # - if (defined($depthcount)) { $depthcount++; } else - { $depthcount=0; } if ($depthcount<20) { - foreach (split(/\,/,&metadata($uri,'keys', - $parser->get_text('/import'),$unikey, - $depthcount))) { + my $location=$parser->get_text('/import'); + my $dir=$filename; + $dir=~s|[^/]*$||; + $location=&filelocation($dir,$location); + foreach (sort(split(/\,/,&metadata($uri,'keys', + $location,$unikey, + $depthcount+1)))) { $metathesekeys{$_}=1; } } @@ -2819,11 +3167,17 @@ sub metadata { foreach (@{$token->[3]}) { $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_}; } - unless ( - $metacache{$uri.':'.$unikey}=&HTML::Entities::decode($parser->get_text('/'.$entry)) - ) { $metacache{$uri.':'.$unikey}= - $metacache{$uri.':'.$unikey.'.default'}; - } + my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry)); + my $default=$metacache{$uri.':'.$unikey.'.default'}; + if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) { + # only ws inside the tag, and not in default, so use default + # as value + $metacache{$uri.':'.$unikey}=$default; + } else { + # either something interesting inside the tag or default + # uninteresting + $metacache{$uri.':'.$unikey}=$internaltext; + } # end of not-a-package not-a-library import } # end of not-a-package start tag @@ -2831,8 +3185,9 @@ sub metadata { # the next is the end of "start tag" } } - &metadata_generate_part0(\%metathesekeys,\%metacache,$uri); $metacache{$uri.':keys'}=join(',',keys %metathesekeys); + &metadata_generate_part0(\%metathesekeys,\%metacache,$uri); + $metacache{$uri.':allpossiblekeys'}=join(',',keys %metathesekeys); $metacache{$uri.':cachedtimestamp'}=time; # this is the end of "was not already recently cached } @@ -2867,6 +3222,33 @@ sub metadata_generate_part0 { } } +# ------------------------------------------------- Get the title of a resource + +sub gettitle { + my $urlsymb=shift; + my $symb=&symbread($urlsymb); + unless ($symb) { + unless ($urlsymb) { $urlsymb=$ENV{'request.filename'}; } + return &metadata($urlsymb,'title'); + } + if ($titlecache{$symb}) { return $titlecache{$symb}; } + my ($map,$resid,$url)=split(/\_\_\_/,$symb); + my $title=''; + my %bighash; + if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', + &GDBM_READER(),0640)) { + my $mapid=$bighash{'map_pc_'.&clutter($map)}; + $title=$bighash{'title_'.$mapid.'.'.$resid}; + untie %bighash; + } + if ($title) { + $titlecache{$symb}=$title; + return $title; + } else { + return &metadata($urlsymb,'title'); + } +} + # ------------------------------------------------- Update symbolic store links sub symblist { @@ -2904,7 +3286,7 @@ sub symbverify { my $okay=0; if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', &GDBM_READER(),0640)) { - my $ids=$bighash{'ids_/res/'.$thisfn}; + my $ids=$bighash{'ids_'.&clutter($thisfn)}; unless ($ids) { $ids=$bighash{'ids_/'.$thisfn}; } @@ -2975,7 +3357,7 @@ sub symbread { if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', &GDBM_READER(),0640)) { # ---------------------------------------------- Get ID(s) for current resource - my $ids=$bighash{'ids_/res/'.$thisfn}; + my $ids=$bighash{'ids_'.&clutter($thisfn)}; unless ($ids) { $ids=$bighash{'ids_/'.$thisfn}; } @@ -3082,13 +3464,24 @@ sub receipt { # ------------------------------------------------------------ Serves up a file # returns either the contents of the file or a -1 sub getfile { - my $file=shift; + my $file=shift; + if ($file=~/^\/*uploaded\//) { # user file + my $ua=new LWP::UserAgent; + my $request=new HTTP::Request('GET',&tokenwrapper($file)); + my $response=$ua->request($request); + if ($response->is_success()) { + return $response->content; + } else { + return -1; + } + } else { # normal file from res space &repcopy($file); if (! -e $file ) { return -1; }; my $fh=Apache::File->new($file); my $a=''; while (<$fh>) { $a .=$_; } - return $a + return $a; + } } sub filelocation { @@ -3098,6 +3491,8 @@ sub filelocation { if ($file=~m:^/~:) { # is a contruction space reference $location = $file; $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:; + } elsif ($file=~/^\/*uploaded/) { # is an uploaded file + $location=$file; } else { $file=~s/^$perlvar{'lonDocRoot'}//; $file=~s:^/*res::; @@ -3135,6 +3530,16 @@ sub declutter { return $thisfn; } +# ------------------------------------------------------------- Clutter up URLs + +sub clutter { + my $thisfn='/'.&declutter(shift); + unless ($thisfn=~/^\/(uploaded|adm|userfiles|ext|raw|priv)\//) { + $thisfn='/res'.$thisfn; + } + return $thisfn; +} + # -------------------------------------------------------- Escape Special Chars sub escape { @@ -3185,18 +3590,42 @@ BEGIN { } } +# ------------------------------------------------------------ Read domain file +{ + my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. + '/domain.tab'); + %domaindescription = (); + %domain_auth_def = (); + %domain_auth_arg_def = (); + if ($fh) { + while (<$fh>) { + next if /^\#/; + chomp; + my ($domain, $domain_description, $def_auth, $def_auth_arg) + = split(/:/,$_,4); + $domain_auth_def{$domain}=$def_auth; + $domain_auth_arg_def{$domain}=$def_auth_arg; + $domaindescription{$domain}=$domain_description; +# &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}"); +# &logthis("Domain.tab: $domain ".$domaindescription{$domain} ); + } + } +} + + # ------------------------------------------------------------- Read hosts file { my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab"); while (my $configline=<$config>) { + next if ($configline =~ /^(\#|\s*$)/); chomp($configline); my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline); if ($id && $domain && $role && $name && $ip) { $hostname{$id}=$name; $hostdom{$id}=$domain; $hostip{$id}=$ip; - if ($domdescr) { $domaindescription{$domain}=$domdescr; } + $iphost{$ip}=$id; if ($role eq 'library') { $libserv{$id}=$name; } } else { if ($configline) { @@ -3212,7 +3641,7 @@ BEGIN { while (my $configline=<$config>) { chomp($configline); - if (($configline) && ($configline ne $perlvar{'lonHostID'})) { + if ($configline) { $spareid{$configline}=1; } } @@ -3258,9 +3687,15 @@ BEGIN { } } +# ------------- set up temporary directory +{ + $tmpdir = $perlvar{'lonDaemons'}.'/tmp/'; + +} + %metacache=(); -$processmarker=$$.'_'.time.'_'.$perlvar{'lonHostID'}; +$processmarker='_'.time.'_'.$perlvar{'lonHostID'}; $dumpcount=0; &logtouch(); @@ -3476,7 +3911,83 @@ modify user =item * -modifystudent($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,$end,$start) : modify student +modifystudent + +modify a students enrollment and identification information. +The course id is resolved based on the current users environment. +This means the envoking user must be a course coordinator or otherwise +associated with a course. + +This call is essentially a wrapper for lonnet::modifyuser and +lonnet::modify_student_enrollment + +Inputs: + +=over 4 + +=item B<$udom> Students loncapa domain + +=item B<$uname> Students loncapa login name + +=item B<$uid> Students id/student number + +=item B<$umode> Students authentication mode + +=item B<$upass> Students password + +=item B<$first> Students first name + +=item B<$middle> Students middle name + +=item B<$last> Students last name + +=item B<$gene> Students generation + +=item B<$usec> Students section in course + +=item B<$end> Unix time of the roles expiration + +=item B<$start> Unix time of the roles start date + +=item B<$forceid> If defined, allow $uid to be changed + +=item B<$desiredhome> server to use as home server for student + +=back + +=item * + +modify_student_enrollment + +Change a students enrollment status in a class. The environment variable +'role.request.course' must be defined for this function to proceed. + +Inputs: + +=over 4 + +=item $udom, students domain + +=item $uname, students name + +=item $uid, students user id + +=item $first, students first name + +=item $middle + +=item $last + +=item $gene + +=item $usec + +=item $end + +=item $start + +=back + =item *