--- loncom/lonnet/perl/lonnet.pm 2000/11/14 14:58:59 1.61
+++ loncom/lonnet/perl/lonnet.pm 2001/01/09 19:55:31 1.89
@@ -45,13 +45,25 @@
# EXT(name) : value of a variable
# symblist(map,hash) : Updates symbolic storage links
# symbread([filename]) : returns the data handle (filename optional)
-# rndseed() : returns a random seed
+# rndseed() : returns a random seed
+# receipt() : returns a receipt to be given out to users
# getfile(filename) : returns the contents of filename, or a -1 if it can't
# be found, replicates and subscribes to the file
# filelocation(dir,file) : returns a farily clean absolute reference to file
# from the directory dir
# hreflocation(dir,file) : same as filelocation, but for hrefs
# log(domain,user,home,msg) : write to permanent log for user
+# usection(domain,user,courseid) : output of section name/number or '' for
+# "not in course" and '-1' for "no section"
+# userenvironment(domain,user,what) : puts out any environment parameter
+# for a user
+# idput(domain,hash) : writes IDs for users from hash (name=>id,name=>id)
+# idget(domain,array): returns hash with usernames (id=>name,id=>name) for
+# an array of IDs
+# idrget(domain,array): returns hash with IDs for usernames (name=>id,...) for
+# an array of names
+# metadata(file,entry): returns the metadata entry for a file. entry='keys'
+# returns a comma separated list of keys
#
# 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
# 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
@@ -67,7 +79,11 @@
# 10/04 Gerd Kortemeyer
# 10/04 Guy Albertelli
# 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
-# 10/30,10/31,11/2,11/14 Gerd Kortemeyer
+# 10/30,10/31,
+# 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
+# 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
+# 05/01/01 Guy Albertelli
+# 05/01,06/01,09/01 Gerd Kortemeyer
package Apache::lonnet;
@@ -76,10 +92,12 @@ use Apache::File;
use LWP::UserAgent();
use HTTP::Headers;
use vars
-qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit);
+qw(%perlvar %hostname %homecache %spareid %hostdom %libserv %pr %prp %fe %fd $readit %metacache);
use IO::Socket;
use GDBM_File;
use Apache::Constants qw(:common :http);
+use HTML::TokeParser;
+use Fcntl qw(:flock);
# --------------------------------------------------------------------- Logging
@@ -122,8 +140,7 @@ sub reply {
my ($cmd,$server)=@_;
my $answer=subreply($cmd,$server);
if ($answer eq 'con_lost') { $answer=subreply($cmd,$server); }
- if (($answer=~/^error:/) || ($answer=~/^refused/) ||
- ($answer=~/^rejected/)) {
+ if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
&logthis("<font color=blue>WARNING:".
" $cmd to $server returned $answer</font>");
}
@@ -163,6 +180,11 @@ sub reconlonc {
sub critical {
my ($cmd,$server)=@_;
+ unless ($hostname{$server}) {
+ &logthis("<font color=blue>WARNING:".
+ " Critical message to unknown server ($server)</font>");
+ return 'no_such_host';
+ }
my $answer=reply($cmd,$server);
if ($answer eq 'con_lost') {
my $pingreply=reply('ping',$server);
@@ -227,7 +249,14 @@ sub appenv {
unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
return 'error';
}
+ unless (flock($fh,LOCK_SH)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain shared lock in appenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
@oldenv=<$fh>;
+ $fh->close();
}
for (my $i=0; $i<=$#oldenv; $i++) {
chomp($oldenv[$i]);
@@ -244,9 +273,16 @@ sub appenv {
return 'error';
}
my $newname;
+ unless (flock($fh,LOCK_EX)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain exclusive lock in appenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
foreach $newname (keys %newenv) {
print $fh "$newname=$newenv{$newname}\n";
}
+ $fh->close();
}
return 'ok';
}
@@ -266,16 +302,30 @@ sub delenv {
unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
return 'error';
}
+ unless (flock($fh,LOCK_SH)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain shared lock in delenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
@oldenv=<$fh>;
+ $fh->close();
}
{
my $fh;
unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
return 'error';
}
+ unless (flock($fh,LOCK_EX)) {
+ &logthis("<font color=blue>WARNING: ".
+ 'Could not obtain exclusive lock in delenv: '.$!);
+ $fh->close();
+ return 'error: '.$!;
+ }
map {
unless ($_=~/^$delthis/) { print $fh $_; }
} @oldenv;
+ $fh->close();
}
return 'ok';
}
@@ -357,6 +407,111 @@ sub homeserver {
return 'no_host';
}
+# ------------------------------------- Find the usernames behind a list of IDs
+
+sub idget {
+ my ($udom,@ids)=@_;
+ my %returnhash=();
+
+ my $tryserver;
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $idlist=join('&',@ids);
+ $idlist=~tr/A-Z/a-z/;
+ my $reply=&reply("idget:$udom:".$idlist,$tryserver);
+ my @answer=();
+ if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
+ @answer=split(/\&/,$reply);
+ } ;
+ my $i;
+ for ($i=0;$i<=$#ids;$i++) {
+ if ($answer[$i]) {
+ $returnhash{$ids[$i]}=$answer[$i];
+ }
+ }
+ }
+ }
+ return %returnhash;
+}
+
+# ------------------------------------- Find the IDs behind a list of usernames
+
+sub idrget {
+ my ($udom,@unames)=@_;
+ my %returnhash=();
+ map {
+ $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
+ } @unames;
+ return %returnhash;
+}
+
+# ------------------------------- Store away a list of names and associated IDs
+
+sub idput {
+ my ($udom,%ids)=@_;
+ my %servers=();
+ map {
+ my $uhom=&homeserver($_,$udom);
+ if ($uhom ne 'no_host') {
+ my $id=&escape($ids{$_});
+ $id=~tr/A-Z/a-z/;
+ my $unam=&escape($_);
+ if ($servers{$uhom}) {
+ $servers{$uhom}.='&'.$id.'='.$unam;
+ } else {
+ $servers{$uhom}=$id.'='.$unam;
+ }
+ &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
+ }
+ } keys %ids;
+ map {
+ &critical('idput:'.$udom.':'.$servers{$_},$_);
+ } keys %servers;
+}
+
+# ------------------------------------- Find the section of student in a course
+
+sub usection {
+ my ($udom,$unam,$courseid)=@_;
+ $courseid=~s/\_/\//g;
+ $courseid=~s/^(\w)/\/$1/;
+ map {
+ my ($key,$value)=split(/\=/,$_);
+ $key=&unescape($key);
+ if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+ my $section=$1;
+ if ($key eq $courseid.'_st') { $section=''; }
+ my ($dummy,$end,$start)=split(/\_/,&unescape($value));
+ my $now=time;
+ my $notactive=0;
+ if ($start) {
+ if ($now<$start) { $notactive=1; }
+ }
+ if ($end) {
+ if ($now>$end) { $notactive=1; }
+ }
+ unless ($notactive) { return $section; }
+ }
+ } split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
+ &homeserver($unam,$udom)));
+ return '-1';
+}
+
+# ------------------------------------- Read an entry from a user's environment
+
+sub userenvironment {
+ my ($udom,$unam,@what)=@_;
+ my %returnhash=();
+ my @answer=split(/\&/,
+ &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
+ &homeserver($unam,$udom)));
+ my $i;
+ for ($i=0;$i<=$#what;$i++) {
+ $returnhash{$what[$i]}=&unescape($answer[$i]);
+ }
+ return %returnhash;
+}
+
# ----------------------------- Subscribe to a resource, return URL if possible
sub subscribe {
@@ -369,6 +524,9 @@ sub subscribe {
return 'not_found';
}
my $answer=reply("sub:$fname",$home);
+ if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
+ $answer.=' by '.$home;
+ }
return $answer;
}
@@ -380,14 +538,14 @@ sub repcopy {
my $transname="$filename.in.transfer";
if ((-e $filename) || (-e $transname)) { return OK; }
my $remoteurl=subscribe($filename);
- if ($remoteurl eq 'con_lost') {
- &logthis("Subscribe returned con_lost: $filename");
+ if ($remoteurl =~ /^con_lost by/) {
+ &logthis("Subscribe returned $remoteurl: $filename");
return HTTP_SERVICE_UNAVAILABLE;
} elsif ($remoteurl eq 'not_found') {
&logthis("Subscribe returned not_found: $filename");
return HTTP_NOT_FOUND;
- } elsif ($remoteurl eq 'rejected') {
- &logthis("Subscribe returned rejected: $filename");
+ } elsif ($remoteurl =~ /^rejected by/) {
+ &logthis("Subscribe returned $remoteurl: $filename");
return FORBIDDEN;
} elsif ($remoteurl eq 'directory') {
return OK;
@@ -511,9 +669,12 @@ sub restore {
my ($name,$value)=split(/\=/,$_);
$returnhash{&unescape($name)}=&unescape($value);
} split(/\&/,$answer);
- map {
- $returnhash{$_}=$returnhash{$returnhash{'version'}.':'.$_};
- } split(/\:/,$returnhash{$returnhash{'version'}.':keys'});
+ my $version;
+ for ($version=1;$version<=$returnhash{'version'};$version++) {
+ map {
+ $returnhash{$_}=$returnhash{$version.':'.$_};
+ } split(/\:/,$returnhash{$version.':keys'});
+ }
return %returnhash;
}
@@ -774,8 +935,11 @@ sub allowed {
}
# Course: uri itself is a course
+ my $courseuri=$uri;
+ $courseuri=~s/\_(\d)/\/$1/;
+ $courseuri=~s/^([^\/])/\/$1/;
- if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$uri}
+ if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
=~/$priv\&([^\:]*)/) {
$thisallowed.=$1;
}
@@ -817,7 +981,7 @@ sub allowed {
$checkreferer=0;
}
}
-
+
if (($ENV{'HTTP_REFERER'}) && ($checkreferer)) {
my $refuri=$ENV{'HTTP_REFERER'};
$refuri=~s/^http\:\/\/$ENV{'request.host'}//i;
@@ -1028,7 +1192,7 @@ sub fileembstyle {
# ------------------------------------------------------------ Description Text
-sub filedecription {
+sub filedescription {
my $ending=shift;
return $fd{$ending};
}
@@ -1038,29 +1202,198 @@ sub filedecription {
sub assignrole {
my ($udom,$uname,$url,$role,$end,$start)=@_;
my $mrole;
- $url=declutter($url);
if ($role =~ /^cr\//) {
- unless ($url=~/\.course$/) { return 'invalid'; }
- unless (allowed('ccr',$url)) { return 'refused'; }
+ unless (&allowed('ccr',$url)) { return 'refused'; }
$mrole='cr';
} else {
- unless (($url=~/\.course$/) || ($url=~/\/$/)) { return 'invalid'; }
- unless (allowed('c'+$role)) { return 'refused'; }
+ my $cwosec=$url;
+ $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
+ unless (&allowed('c'.$role,$cwosec)) { return 'refused'; }
$mrole=$role;
}
my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
"$udom:$uname:$url".'_'."$mrole=$role";
- if ($end) { $command.='_$end'; }
+ if ($end) { $command.='_'.$end; }
if ($start) {
if ($end) {
- $command.='_$start';
+ $command.='_'.$start;
} else {
- $command.='_0_$start';
+ $command.='_0_'.$start;
}
}
return &reply($command,&homeserver($uname,$udom));
}
+# --------------------------------------------------------------- Modify a user
+
+
+sub modifyuser {
+ my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene)=@_;
+ &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
+ $umode.', '.$first.', '.$middle.', '.
+ $last.', '.$gene.' by '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ my $uhome=&homeserver($uname,$udom);
+# ----------------------------------------------------------------- Create User
+ if (($uhome eq 'no_host') && ($umode) && ($upass)) {
+ my $unhome='';
+ if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
+ $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+ } else {
+ my $tryserver;
+ my $loadm=10000000;
+ foreach $tryserver (keys %libserv) {
+ if ($hostdom{$tryserver} eq $udom) {
+ my $answer=reply('load',$tryserver);
+ if (($answer=~/\d+/) && ($answer<$loadm)) {
+ $loadm=$answer;
+ $unhome=$tryserver;
+ }
+ }
+ }
+ }
+ if (($unhome eq '') || ($unhome eq 'no_host')) {
+ return 'error: find home';
+ }
+ my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
+ &escape($upass),$unhome);
+ unless ($reply eq 'ok') {
+ return 'error: '.$reply;
+ }
+ $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
+ return 'error: verify home';
+ }
+ }
+# ---------------------------------------------------------------------- Add ID
+ if ($uid) {
+ $uid=~tr/A-Z/a-z/;
+ my %uidhash=&idrget($udom,$uname);
+ if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)) {
+ unless ($uid eq $uidhash{$uname}) {
+ return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
+ }
+ } else {
+ &idput($udom,($uname => $uid));
+ }
+ }
+# -------------------------------------------------------------- Add names, etc
+ my $names=&reply('get:'.$udom.':'.$uname.
+ ':environment:firstname&middlename&lastname&generation',
+ $uhome);
+ my ($efirst,$emiddle,$elast,$egene)=split(/\&/,$names);
+ if ($first) { $efirst = &escape($first); }
+ if ($middle) { $emiddle = &escape($middle); }
+ if ($last) { $elast = &escape($last); }
+ if ($gene) { $egene = &escape($gene); }
+ my $reply=&reply('put:'.$udom.':'.$uname.
+ ':environment:firstname='.$efirst.
+ '&middlename='.$emiddle.
+ '&lastname='.$elast.
+ '&generation='.$egene,$uhome);
+ if ($reply ne 'ok') {
+ return 'error: '.$reply;
+ }
+ &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
+ $umode.', '.$first.', '.$middle.', '.
+ $last.', '.$gene.' by '.
+ $ENV{'user.name'}.' at '.$ENV{'user.domain'});
+ return 'ok';
+}
+
+# -------------------------------------------------------------- Modify student
+
+sub modifystudent {
+ my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
+ $end,$start)=@_;
+ my $cid='';
+ unless ($cid=$ENV{'request.course.id'}) {
+ return 'not_in_class';
+ }
+# --------------------------------------------------------------- Make the user
+ my $reply=&modifyuser
+ ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene);
+ unless ($reply eq 'ok') { return $reply; }
+ my $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: no such user';
+ }
+# -------------------------------------------------- Add student to course list
+ my $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
+ $ENV{'course.'.$cid.'.num'}.':classlist:'.
+ &escape($uname.':'.$udom).'='.
+ &escape($end.':'.$start),
+ $ENV{'course.'.$cid.'.home'});
+ unless (($reply eq 'ok') || ($reply eq 'delayed')) {
+ return 'error: '.$reply;
+ }
+# ---------------------------------------------------- Add student role to user
+ my $uurl='/'.$cid;
+ $uurl=~s/\_/\//g;
+ if ($usec) {
+ $uurl.='/'.$usec;
+ }
+ return &assignrole($udom,$uname,$uurl,'st',$end,$start);
+}
+
+# ------------------------------------------------- Write to course preferences
+
+sub writecoursepref {
+ my ($courseid,%prefs)=@_;
+ $courseid=~s/^\///;
+ $courseid=~s/\_/\//g;
+ my ($cdomain,$cnum)=split(/\//,$courseid);
+ my $chome=homeserver($cnum,$cdomain);
+ if (($chome eq '') || ($chome eq 'no_host')) {
+ return 'error: no such course';
+ }
+ my $cstring='';
+ map {
+ $cstring.=escape($_).'='.escape($prefs{$_}).'&';
+ } keys %prefs;
+ $cstring=~s/\&$//;
+ return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
+}
+
+# ---------------------------------------------------------- Make/modify course
+
+sub createcourse {
+ my ($udom,$description,$url)=@_;
+ $url=&declutter($url);
+ my $cid='';
+ unless (&allowed('ccc',$ENV{'user.domain'})) {
+ return 'refused';
+ }
+ unless ($udom eq $ENV{'user.domain'}) {
+ return 'refused';
+ }
+# ------------------------------------------------------------------- Create ID
+ my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
+ unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+# ----------------------------------------------- Make sure that does not exist
+ my $uhome=&homeserver($uname,$udom);
+ unless (($uhome eq '') || ($uhome eq 'no_host')) {
+ $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
+ unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+ $uhome=&homeserver($uname,$udom);
+ unless (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: unable to generate unique course-ID';
+ }
+ }
+# ------------------------------------------------------------- Make the course
+ my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
+ $ENV{'user.home'});
+ unless ($reply eq 'ok') { return 'error: '.$reply; }
+ my $uhome=&homeserver($uname,$udom);
+ if (($uhome eq '') || ($uhome eq 'no_host')) {
+ return 'error: no such course';
+ }
+ &writecoursepref($udom.'_'.$uname,
+ ('description' => $description,
+ 'url' => $url));
+ return '/'.$udom.'/'.$uname;
+}
+
# ---------------------------------------------------------- Assign Custom Role
sub assigncustomrole {
@@ -1191,6 +1524,7 @@ sub condval {
sub EXT {
my $varname=shift;
+ unless ($varname) { return ''; }
my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
my $rest;
if ($therest[0]) {
@@ -1255,20 +1589,42 @@ sub EXT {
} elsif ($realm eq 'resource') {
if ($ENV{'request.course.id'}) {
# ----------------------------------------------------- Cascading lookup scheme
- my $reslevel=
- $ENV{'request.course.id'}.'.'.&symbread().'.'.$spacequalifierrest;
+ my $symbp=&symbread();
+ my $mapp=(split(/\_\_\_/,$symbp))[0];
+
+ my $symbparm=$symbp.'.'.$spacequalifierrest;
+ my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
+
my $seclevel=
- $ENV{'request.course.id'}.'.'.
- $ENV{'request.course.sec'}.'.'.$spacequalifierrest;
+ $ENV{'request.course.id'}.'.['.
+ $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
+ my $seclevelr=
+ $ENV{'request.course.id'}.'.['.
+ $ENV{'request.course.sec'}.'].'.$symbparm;
+ my $seclevelm=
+ $ENV{'request.course.id'}.'.['.
+ $ENV{'request.course.sec'}.'].'.$mapparm;
+
my $courselevel=
$ENV{'request.course.id'}.'.'.$spacequalifierrest;
+ my $courselevelr=
+ $ENV{'request.course.id'}.'.'.$symbparm;
+ my $courselevelm=
+ $ENV{'request.course.id'}.'.'.$mapparm;
+
# ----------------------------------------------------------- first, check user
- my %resourcedata=get('resourcedata',($reslevel,$seclevel,$courselevel));
- if ($resourcedata{$reslevel}) { return $resourcedata{$reslevel}; }
- if ($resourcedata{$seclevel}) { return $resourcedata{$seclevel}; }
+ my %resourcedata=get('resourcedata',
+ ($courselevelr,$courselevelm,$courselevel));
+ if ($resourcedata{$courselevelr}!~/^error\:/) {
+
+ if ($resourcedata{$courselevelr}) {
+ return $resourcedata{$courselevelr}; }
+ if ($resourcedata{$courselevelm}) {
+ return $resourcedata{$courselevelm}; }
if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
+ }
# -------------------------------------------------------- second, check course
my $section='';
if ($ENV{'request.course.sec'}) {
@@ -1277,38 +1633,36 @@ sub EXT {
my $reply=&reply('get:'.
$ENV{'course.'.$ENV{'request.course.id'}.$section.'.domain'}.':'.
$ENV{'course.'.$ENV{'request.course.id'}.$section.'.num'}.
- ':resourcedata:'.
- escape($reslevel).':'.escape($seclevel).':'.escape($courselevel),
+ ':resourcedata:'.
+ &escape($seclevelr).'&'.&escape($seclevelm).'&'.&escape($seclevel).'&'.
+ &escape($courselevelr).'&'.&escape($courselevelm).'&'.&escape($courselevel),
$ENV{'course.'.$ENV{'request.course.id'}.$section.'.home'});
- map {
- my ($name,$value)=split(/\=/,$_);
- $resourcedata{unescape($name)}=unescape($value);
- } split(/\&/,$reply);
- if ($resourcedata{$reslevel}) { return $resourcedata{$reslevel}; }
- if ($resourcedata{$seclevel}) { return $resourcedata{$seclevel}; }
- if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
+ if ($reply!~/^error\:/) {
+ map {
+ if ($_) { return &unescape($_); }
+ } split(/\&/,$reply);
+ }
# ------------------------------------------------------ third, check map parms
-
- if ($ENV{'resource.parms.'.$reslevel}) {
- return $ENV{'resource.parms.'.$reslevel};
+ my %parmhash=();
+ my $thisparm='';
+ if (tie(%parmhash,'GDBM_File',
+ $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
+ $thisparm=$parmhash{$symbparm};
+ untie(%parmhash);
}
+ if ($thisparm) { return $thisparm; }
}
# --------------------------------------------- last, look in resource metadata
- my $uri=&declutter($ENV{'request.filename'});
- my $filename=$perlvar{'lonDocRoot'}.'/res/'.$ENV.'.meta';
- if (-e $filename) {
- my @content;
- {
- my $fh=Apache::File->new($filename);
- @content=<$fh>;
- }
- if (join('',@content)=~
- /\<$space[^\>]*\>([^\<]*)\<\/$space\>/) {
- return $1;
- }
- }
+
+ $spacequalifierrest=~s/\./\_/;
+ my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
+ if ($metadata) { return $metadata; }
+ $metadata=&metadata($ENV{'request.filename'},
+ 'parameter_'.$spacequalifierrest);
+ if ($metadata) { return $metadata; }
+
# ---------------------------------------------------- Any other user namespace
} elsif ($realm eq 'environment') {
# ----------------------------------------------------------------- environment
@@ -1322,19 +1676,46 @@ sub EXT {
return '';
}
-# ---------------------------------------- Append resource parms to environment
+# ---------------------------------------------------------------- Get metadata
-sub appendparms {
- my ($symb,$parms)=@_;
- my %storehash=();
- my $prefix='resource.parms.'.$ENV{'request.course.id'}.'.'.$symb;
- map {
- my ($typename,$value)=split(/\=/,$_);
- my ($type,$name)=split(/\:/,$typename);
- $storehash{$prefix.'.'.unescape($name)}=unescape($value);
- $storehash{$prefix.'.'.unescape($name).'.type'}=unescape($type);
- } split(/\&/,$parms);
- &appenv(%storehash);
+sub metadata {
+ my ($uri,$what)=@_;
+
+ $uri=&declutter($uri);
+ my $filename=$uri;
+ $uri=~s/\.meta$//;
+ unless ($metacache{$uri.':keys'}) {
+ unless ($filename=~/\.meta$/) { $filename.='.meta'; }
+ my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
+ my $parser=HTML::TokeParser->new(\$metastring);
+ my $token;
+ while ($token=$parser->get_token) {
+ if ($token->[0] eq 'S') {
+ my $entry=$token->[1];
+ my $unikey=$entry;
+ if (defined($token->[2]->{'part'})) {
+ $unikey.='_'.$token->[2]->{'part'};
+ }
+ if (defined($token->[2]->{'name'})) {
+ $unikey.='_'.$token->[2]->{'name'};
+ }
+ if ($metacache{$uri.':keys'}) {
+ $metacache{$uri.':keys'}.=','.$unikey;
+ } else {
+ $metacache{$uri.':keys'}=$unikey;
+ }
+ map {
+ $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
+ } @{$token->[3]};
+ unless (
+ $metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry)
+ ) { $metacache{$uri.':'.$unikey}=
+ $metacache{$uri.':'.$unikey.'.default'};
+ }
+ }
+ }
+ }
+ return $metacache{$uri.':'.$what};
}
# ------------------------------------------------- Update symbolic store links
@@ -1389,6 +1770,9 @@ sub symbread {
&GDBM_READER,0640)) {
# ---------------------------------------------- Get ID(s) for current resource
my $ids=$bighash{'ids_/res/'.$thisfn};
+ unless ($ids) {
+ $ids=$bighash{'ids_/'.$thisfn};
+ }
if ($ids) {
# ------------------------------------------------------------------- Has ID(s)
my @possibilities=split(/\,/,$ids);
@@ -1416,7 +1800,9 @@ sub symbread {
untie(%bighash)
}
}
- if ($syval) { return $syval.'___'.$thisfn; }
+ if ($syval) {
+ return $syval.'___'.$thisfn;
+ }
}
&appenv('request.ambiguous' => $thisfn);
return '';
@@ -1451,6 +1837,27 @@ sub rndseed {
.$symbchck);
}
+sub ireceipt {
+ my ($funame,$fudom,$fucourseid,$fusymb)=@_;
+ my $cuname=unpack("%32C*",$funame);
+ my $cudom=unpack("%32C*",$fudom);
+ my $cucourseid=unpack("%32C*",$fucourseid);
+ my $cusymb=unpack("%32C*",$fusymb);
+ my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
+ return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
+ ($cunique%$cuname+
+ $cunique%$cudom+
+ $cusymb%$cuname+
+ $cusymb%$cudom+
+ $cucourseid%$cuname+
+ $cucourseid%$cudom);
+}
+
+sub receipt {
+ return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
+ $ENV{'request.course.id'},&symbread());
+}
+
# ------------------------------------------------------------ Serves up a file
# returns either the contents of the file or a -1
sub getfile {
@@ -1597,6 +2004,7 @@ if ($readit ne 'done') {
}
}
+%metacache=();
$readit='done';
&logthis('<font color=yellow>INFO: Read configuration</font>');