--- loncom/lonnet/perl/lonnet.pm 2000/10/28 17:26:35 1.52
+++ loncom/lonnet/perl/lonnet.pm 2000/11/02 17:42:09 1.58
@@ -24,6 +24,7 @@
# revokerole (udom,uname,url,role) : Revoke a role for url
# revokecustomrole (udom,uname,url,rdom,rnam,rolename) : Revoke a custom role
# appenv(hash) : adds hash to session environment
+# delenv(varname) : deletes all environment entries starting with varname
# store(hash) : stores hash permanently for this url
# cstore(hash) : critical store
# restore : returns hash for this url
@@ -41,7 +42,7 @@
# directcondval(index) : reading condition value of single condition from
# state string
# condval(index) : value of condition index based on state
-# varval(name) : value of a variable
+# EXT(name) : value of a variable
# refreshstate() : refresh the state information string
# symblist(map,hash) : Updates symbolic storage links
# symbread([filename]) : returns the data handle (filename optional)
@@ -66,8 +67,8 @@
# 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
# 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
-# Gerd Kortemeyer
+# 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 Gerd Kortemeyer
package Apache::lonnet;
@@ -250,6 +251,35 @@ sub appenv {
}
return 'ok';
}
+# ----------------------------------------------------- Delete from Environment
+
+sub delenv {
+ my $delthis=shift;
+ my %newenv=();
+ if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
+ &logthis("<font color=blue>WARNING: ".
+ "Attempt to delete from environment ".$delthis);
+ return 'error';
+ }
+ my @oldenv;
+ {
+ my $fh;
+ unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
+ return 'error';
+ }
+ @oldenv=<$fh>;
+ }
+ {
+ my $fh;
+ unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
+ return 'error';
+ }
+ map {
+ unless ($_=~/^$delthis/) { print $fh $_; }
+ } @oldenv;
+ }
+ return 'ok';
+}
# ------------------------------ Find server with least workload from spare.tab
@@ -499,7 +529,9 @@ sub coursedescription {
if ($chome ne 'no_host') {
my $rep=reply("dump:$cdomain:$cnum:environment",$chome);
if ($rep ne 'con_lost') {
- my %cachehash=();
+ my $normalid=$courseid;
+ $normalid=~s/\//\_/g;
+ my %envhash=();
my %returnhash=('home' => $chome,
'domain' => $cdomain,
'num' => $cnum);
@@ -508,14 +540,13 @@ sub coursedescription {
$name=&unescape($name);
$value=&unescape($value);
$returnhash{$name}=$value;
- if ($name eq 'description') {
- $cachehash{$courseid}=$value;
- }
+ $envhash{'course.'.$normalid.'.'.$name}=$value;
} split(/\&/,$rep);
$returnhash{'url'}='/res/'.declutter($returnhash{'url'});
$returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
$ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
- put ('nohist_coursedescriptions',%cachehash);
+ $envhash{'course.'.$normalid.'.last_cache'}=time;
+ &appenv(%envhash);
return %returnhash;
}
}
@@ -717,9 +748,9 @@ sub allowed {
my ($priv,$uri)=@_;
$uri=&declutter($uri);
-# Free bre access to adm resources
+# Free bre access to adm and meta resources
- if (($uri=~/^adm\//) && ($priv eq 'bre')) {
+ if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
return 'F';
}
@@ -776,7 +807,7 @@ sub allowed {
my $pathname=$uri;
$pathname=~s/\/$filename$//;
if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
- /\&$filename\:(\d+)\&/) {
+ /\&$filename\:([\d\|]+)\&/) {
$statecond=$1;
if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
=~/$priv\&([^\:]*)/) {
@@ -784,18 +815,27 @@ sub allowed {
$checkreferer=0;
}
}
+
if (($ENV{'HTTP_REFERER'}) && ($checkreferer)) {
- my @uriparts=split(/\//,&declutter($ENV{'HTTP_REFERER'}));
+ my $refuri=$ENV{'HTTP_REFERER'};
+ $refuri=~s/^http\:\/\/$ENV{'request.host'}//i;
+ $refuri=&declutter($refuri);
+ my @uriparts=split(/\//,$refuri);
my $filename=$uriparts[$#uriparts];
- my $pathname=$uri;
+ my $pathname=$refuri;
$pathname=~s/\/$filename$//;
- if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
- /\&$filename\:(\d+)\&/) {
- $statecond=$1;
+ my @filenameparts=split(/\./,$uri);
+ if (&fileembstyle($filenameparts[$#filenameparts]) ne 'ssi') {
+ if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
+ /\&$filename\:([\d\|]+)\&/) {
+ my $refstatecond=$1;
if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
=~/$priv\&([^\:]*)/) {
$thisallowed.=$1;
+ $uri=$refuri;
+ $statecond=$refstatecond;
}
+ }
}
}
}
@@ -824,37 +864,43 @@ sub allowed {
#
# Possibly locked functionality, check all courses
+# Locks might take effect only after 10 minutes cache expiration for other
+# courses, and 2 minutes for current course
my $envkey;
if ($thisallowed=~/L/) {
foreach $envkey (keys %ENV) {
- if ($envkey=~/^user\.role\.st\.([^\.]*)/) {
- my ($cdom,$cnum,$csec)=split(/\//,$1);
- my %locks=();
- map {
- my ($name,$value)=split(/\=/,$_);
- $locks{&unescape($name)}=&unescape($value);
- } split(/\&/,&reply('get:'.$cdom.':'.$cnum.
- ':environment:'.&escape('priv.'.$priv.'.lock.sections').
- ':'.&escape('priv.'.$priv.'.lock.expire').
- ':'.&escape('res.'.$uri.'.lock.sections').
- ':'.&escape('res.'.$uri.'.lock.expire'),
- &homeserver($cnum,$cdom)));
- if (($locks{'res.'.$uri.'.lock.sections'}=~/\,$csec\,/) ||
- ($locks{'res.'.$uri.'.lock.sections'} eq 'all')) {
- if ($locks{'res.'.$uri.'.lock.expire'}>time) {
- &log('Locked by res: '.$priv.' for '.$uri.' due to '.
+ if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
+ my $courseid=$2;
+ my $roleid=$1.'.'.$2;
+ my $expiretime=600;
+ if ($ENV{'request.role'} eq $roleid) {
+ $expiretime=120;
+ }
+ my ($cdom,$cnum,$csec)=split(/\//,$courseid);
+ my $prefix='course.'.$cdom.'_'.$cnum.'.';
+ if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
+ &coursedescription($courseid);
+ }
+ if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
+ || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
+ if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},
+ $ENV{'user.host'},
+ 'Locked by res: '.$priv.' for '.$uri.' due to '.
$cdom.'/'.$cnum.'/'.$csec.' expire '.
- $locks{'priv.'.$priv.'.lock.expire'});
+ $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
return '';
}
}
- if (($locks{'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/) ||
- ($locks{'priv.'.$priv.'.lock.sections'} eq 'all')) {
- if ($locks{'priv.'.$priv.'.lock.expire'}>time) {
- &log('Locked by priv: '.$priv.' for '.$uri.' due to '.
+ if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
+ || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
+ if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},
+ $ENV{'user.host'},
+ 'Locked by priv: '.$priv.' for '.$uri.' due to '.
$cdom.'/'.$cnum.'/'.$csec.' expire '.
- $locks{'priv.'.$priv.'.lock.expire'});
+ $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
return '';
}
}
@@ -874,6 +920,41 @@ sub allowed {
# Now user is definitely in a course
#
+
+# Course preferences
+
+ if ($thisallowed=~/C/) {
+ my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
+ if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
+ =~/\,$rolecode\,/) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
+ 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
+ $ENV{'request.course.id'});
+ return '';
+ }
+ }
+
+# Resource preferences
+
+ if ($thisallowed=~/R/) {
+ my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
+ my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
+ if (-e $filename) {
+ my @content;
+ {
+ my $fh=Apache::File->new($filename);
+ @content=<$fh>;
+ }
+ if (join('',@content)=~
+ /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
+ &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
+ 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
+ return '';
+
+ }
+ }
+ }
+
# Restricted by state?
if ($thisallowed=~/X/) {
@@ -1071,8 +1152,16 @@ sub directcondval {
sub condval {
my $condidx=shift;
my $result=0;
+ my $allpathcond='';
+ map {
+ if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
+ $allpathcond.=
+ '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
+ }
+ } split(/\|/,$condidx);
+ $allpathcond=~s/\|$//;
if ($ENV{'request.course.id'}) {
- if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx})) {
+ if ($allpathcond) {
my $operand='|';
my @stack;
map {
@@ -1095,8 +1184,7 @@ sub condval {
$result=$result>$new?$result:$new;
}
}
- } ($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$condidx}=~
- /(\d+|\(|\)|\&|\|)/g);
+ } ($allpathcond=~/(\d+|\(|\)|\&|\|)/g);
}
}
return $result;
@@ -1104,7 +1192,7 @@ sub condval {
# --------------------------------------------------------- Value of a Variable
-sub varval {
+sub EXT {
my $varname=shift;
my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
my $rest;
@@ -1113,15 +1201,21 @@ sub varval {
} else {
$rest='';
}
+ my $qualifierrest=$qualifier;
+ if ($rest) { $qualifierrest.='.'.$rest; }
+ my $spacequalifierrest=$space;
+ if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
if ($realm eq 'user') {
# --------------------------------------------------------------- user.resource
if ($space eq 'resource') {
+ my %restored=&restore;
+ return $restored{$qualifierrest};
# ----------------------------------------------------------------- user.access
} elsif ($space eq 'access') {
return &allowed($qualifier,$rest);
# ------------------------------------------ user.preferences, user.environment
} elsif (($space eq 'preferences') || ($space eq 'environment')) {
- return $ENV{join('.',('environment',$qualifier,$rest))};
+ return $ENV{join('.',('environment',$qualifierrest))};
# ----------------------------------------------------------------- user.course
} elsif ($space eq 'course') {
return $ENV{join('.',('request.course',$qualifier))};
@@ -1149,33 +1243,42 @@ sub varval {
# ------------------------------------------------------------- request.browser
if ($space eq 'browser') {
return $ENV{'browser.'.$qualifier};
- } elsif ($space eq 'filename') {
- return $ENV{'request.filename'};
+# ------------------------------------------------------------ request.filename
+ } else {
+ return $ENV{'request.'.$spacequalifierrest};
}
} elsif ($realm eq 'course') {
# ---------------------------------------------------------- course.description
- if ($space eq 'description') {
- my %reply=&coursedescription($ENV{'request.course.id'});
- return $reply{'description'};
-# ------------------------------------------------------------------- course.id
- } elsif ($space eq 'id') {
- return $ENV{'request.course.id'};
-# -------------------------------------------------- Any other course namespace
- } else {
- my ($cdom,$cnam)=split(/\_/,$ENV{'request.course.id'});
- my $chome=&homeserver($cnam,$cdom);
- my $item=join('.',($qualifier,$rest));
- return &unescape
- (&reply('get:'.$cdom.':'.$cnam.':'.&escape($space).':'.
- &escape($item),$chome));
+ my $section='';
+ if ($ENV{'request.course.sec'}) {
+ $section='_'.$ENV{'request.course.sec'};
}
+ return $ENV{'course.'.$ENV{'request.course.id'}.$section.'.'.
+ $spacequalifierrest};
+ } elsif ($realm eq 'resource') {
+# ----------------------------------------------------------- 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 $1;
+ } else {
+ return '';
+ }
+ }
} elsif ($realm eq 'userdata') {
my $uhome=&homeserver($qualifier,$space);
# ----------------------------------------------- userdata.domain.name.resource
# ---------------------------------------------------- Any other user namespace
} elsif ($realm eq 'environment') {
# ----------------------------------------------------------------- environment
- return $ENV{join('.',($space,$qualifier,$rest))};
+ return $ENV{$spacequalifierrest};
} elsif ($realm eq 'system') {
# ----------------------------------------------------------------- system.time
if ($space eq 'time') {