--- rat/lonuserstate.pm 2003/10/22 16:10:56 1.61
+++ rat/lonuserstate.pm 2006/02/23 08:38:54 1.99.2.1
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Construct and maintain state and binary representation of course for user
#
-# $Id: lonuserstate.pm,v 1.61 2003/10/22 16:10:56 www Exp $
+# $Id: lonuserstate.pm,v 1.99.2.1 2006/02/23 08:38:54 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -25,38 +25,22 @@
#
# http://www.lon-capa.org/
#
-# (Server for RAT Maps
-#
-# (Edit Handler for RAT Maps
-# (TeX Content Handler
-#
-# YEAR=2000
-# 05/29/00,05/30 Gerd Kortemeyer)
-# 7/1 Gerd Kortemeyer)
-# 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer)
-#
-# 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23,8/30,
-# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31,
-# 11/1,11/2,11/14,11/16,11/22,12/28,
-# YEAR=2001
-# 07/05/01,08/30,08/31 Gerd Kortemeyer
-#
###
package Apache::lonuserstate;
# ------------------------------------------------- modules used by this module
use strict;
-use Apache::Constants qw(:common :http);
-use Apache::File;
use HTML::TokeParser;
-use Apache::lonnet();
+use Apache::lonnet;
use Apache::loncommon();
use GDBM_File;
use Apache::lonmsg;
use Safe;
use Safe::Hole;
use Opcode;
+use Apache::lonenc;
+use Fcntl qw(:flock);
# ---------------------------------------------------- Globals for this package
@@ -68,6 +52,8 @@ my $errtext; # variable with all errors
my $retfurl; # variable with the very first URL in the course
my %randompick; # randomly picked resources
my %randompickseed; # optional seed for randomly picking resources
+my %encurl; # URLs in this folder are supposed to be encrypted
+my %hiddenurl; # this URL (or complete folder) is supposed to be hidden
# ----------------------------------- Remove version from URL and store in hash
@@ -76,7 +62,9 @@ sub versiontrack {
if ($uri=~/\.(\d+)\.\w+$/) {
my $version=$1;
$uri=~s/\.\d+\.(\w+)$/\.$1/;
- $hash{'version_'.$uri}=$version;
+ unless ($hash{'version_'.$uri}) {
+ $hash{'version_'.$uri}=$version;
+ }
}
return $uri;
}
@@ -85,27 +73,29 @@ sub versiontrack {
sub putinversion {
my $uri=shift;
+ my $key=$env{'request.course.id'}.'_'.&Apache::lonnet::clutter($uri);
if ($hash{'version_'.$uri}) {
my $version=$hash{'version_'.$uri};
+ if ($version eq 'mostrecent') { return $uri; }
+ if ($version eq &Apache::lonnet::getversion(
+ &Apache::lonnet::filelocation('',$uri)))
+ { return $uri; }
$uri=~s/\.(\w+)$/\.$version\.$1/;
}
+ &Apache::lonnet::do_cache_new('courseresversion',$key,&Apache::lonnet::declutter($uri),600);
return $uri;
}
# ----------------------------------------- Processing versions file for course
sub processversionfile {
- my %cenv=shift;
+ my %cenv=@_;
my %versions=&Apache::lonnet::dump('resourceversions',
$cenv{'domain'},
$cenv{'num'});
foreach (keys %versions) {
if ($_=~/^error\:/) { return; }
- if ($versions{$_} eq 'current') {
- delete $hash{'version_'.$_};
- } else {
- $hash{'version_'.$_}=$versions{$_};
- }
+ $hash{'version_'.$_}=$versions{$_};
}
}
@@ -113,7 +103,7 @@ sub processversionfile {
sub loadmap {
my $uri=shift;
- if ($hash{'map_pc_'.$uri}) { return OK; }
+ if ($hash{'map_pc_'.$uri}) { return; }
$pc++;
my $lpc=$pc;
@@ -121,14 +111,14 @@ sub loadmap {
$hash{'map_id_'.$lpc}=$uri;
# Determine and check filename
- my $fn=&Apache::lonnet::filelocation('',$uri);
+ my $fn=&Apache::lonnet::filelocation('',&putinversion($uri));
my $ispage=($fn=~/\.page$/);
unless (($fn=~/\.sequence$/) ||
($fn=~/\.page$/)) {
- $errtext.="Invalid map: $fn\n";
- return OK;
+ $errtext.="Invalid map: $fn\n";
+ return;
}
my $instr=&Apache::lonnet::getfile($fn);
@@ -138,6 +128,7 @@ sub loadmap {
# Successfully got file, parse it
my $parser = HTML::TokeParser->new(\$instr);
+ $parser->attr_encoded(1);
my $token;
my $linkpc=0;
@@ -150,50 +141,59 @@ sub loadmap {
if ($token->[0] eq 'S') {
if ($token->[1] eq 'resource') {
# -------------------------------------------------------------------- Resource
-
+ if ($token->[2]->{'type'} eq 'zombie') { next; }
my $rid=$lpc.'.'.$token->[2]->{'id'};
$hash{'kind_'.$rid}='res';
$hash{'title_'.$rid}=$token->[2]->{'title'};
-# Rip out the version and store it separately
my $turi=&versiontrack($token->[2]->{'src'});
-# If there is an explicit version parameter, use that one
if ($token->[2]->{'version'}) {
- $hash{'version_'.$turi}=$1;
+ unless ($hash{'version_'.$turi}) {
+ $hash{'version_'.$turi}=$1;
+ }
}
- &Apache::lonnet::do_cache(\%Apache::lonnet::titlecache,
- &Apache::lonnet::symbclean(
- &Apache::lonnet::declutter($uri).'___'.
- $token->[2]->{'id'}.'___'.
- &Apache::lonnet::declutter($turi)),
- $token->[2]->{'title'});
+ my $title=$token->[2]->{'title'};
+ $title=~s/\&colon\;/\:/gs;
+# my $symb=&Apache::lonnet::encode_symb($uri,
+# $token->[2]->{'id'},
+# $turi);
+# &Apache::lonnet::do_cache_new('title',$symb,$title);
unless ($ispage) {
$turi=~/\.(\w+)$/;
my $embstyle=&Apache::loncommon::fileembstyle($1);
if ($token->[2]->{'external'} eq 'true') { # external
$turi=~s/^http\:\/\//\/adm\/wrapper\/ext\//;
} elsif ($turi=~/^\/*uploaded\//) { # uploaded
- if (($embstyle eq 'img') || ($embstyle eq 'emb')
- || ($embstyle eq 'ssi')) {
+ if (($embstyle eq 'img')
+ || ($embstyle eq 'emb')
+ || ($embstyle eq 'wrp')) {
$turi='/adm/wrapper'.$turi;
- } elsif ($turi!~/\.(sequence|page)$/) {
+ } elsif ($embstyle eq 'ssi') {
+ #do nothing with these
+ } elsif ($turi!~/\.(sequence|page)$/) {
$turi='/adm/coursedocs/showdoc'.$turi;
}
- } else { # normal internal resource
- if (($embstyle eq 'img') || ($embstyle eq 'emb')) {
- $turi='/adm/wrapper'.$turi;
- }
+ } elsif ($turi=~/\S/) { # normal non-empty internal resource
+ my $mapdir=$uri;
+ $mapdir=~s/[^\/]+$//;
+ $turi=&Apache::lonnet::hreflocation($mapdir,$turi);
+ if (($embstyle eq 'img')
+ || ($embstyle eq 'emb')
+ || ($embstyle eq 'wrp')) {
+ $turi='/adm/wrapper'.$turi;
+ }
}
}
-
- if (defined($hash{'ids_'.$turi})) {
- $hash{'ids_'.$turi}.=','.$rid;
+# Store reverse lookup, remove query string
+ my $idsuri=$turi;
+ $idsuri=~s/\?.+$//;
+ if (defined($hash{'ids_'.$idsuri})) {
+ $hash{'ids_'.$idsuri}.=','.$rid;
} else {
- $hash{'ids_'.$turi}=''.$rid;
+ $hash{'ids_'.$idsuri}=''.$rid;
}
- if
- ($turi=~/\/(syllabus|aboutme|navmaps|smppg|bulletinboard)$/) {
+ if ($turi=~/\/(syllabus|aboutme|navmaps|smppg|bulletinboard)$/) {
$turi.='?register=1';
}
@@ -268,106 +268,134 @@ sub loadmap {
# ------------------------------------------------------------------- Parameter
my $referid=$lpc.'.'.$token->[2]->{'to'};
- my $part=$token->[2]->{'part'};
- unless ($part) { $part=0; }
+ my $name=$token->[2]->{'name'};
+ my $part;
+ if ($name=~/^parameter_(.*)_/) {
+ $part=$1;
+ } else {
+ $part=0;
+ }
+ $name=~s/^.*_([^_]*)$/$1/;
my $newparam=
&Apache::lonnet::escape($token->[2]->{'type'}).':'.
- &Apache::lonnet::escape($part.'.'.
- $token->[2]->{'name'}).'='.
+ &Apache::lonnet::escape($part.'.'.$name).'='.
&Apache::lonnet::escape($token->[2]->{'value'});
if (defined($hash{'param_'.$referid})) {
$hash{'param_'.$referid}.='&'.$newparam;
} else {
$hash{'param_'.$referid}=''.$newparam;
}
- if ($token->[2]->{'name'} eq 'parameter_mapalias') {
+ if ($token->[2]->{'name'}=~/^parameter_(0_)*mapalias$/) {
$hash{'mapalias_'.$token->[2]->{'value'}}=$referid;
}
- if ($token->[2]->{'name'} eq 'parameter_randompick') {
+ if ($token->[2]->{'name'}=~/^parameter_(0_)*randompick$/) {
$randompick{$referid}=$token->[2]->{'value'};
}
- if ($token->[2]->{'name'} eq 'parameter_randompickseed') {
+ if ($token->[2]->{'name'}=~/^parameter_(0_)*randompickseed$/) {
$randompick{$referid}=$token->[2]->{'value'};
}
+ if ($token->[2]->{'name'}=~/^parameter_(0_)*encrypturl$/) {
+ if ($token->[2]->{'value'}=~/^yes$/i) {
+ $encurl{$referid}=1;
+ }
+ }
+ if ($token->[2]->{'name'}=~/^parameter_(0_)*hiddenresource$/) {
+ if ($token->[2]->{'value'}=~/^yes$/i) {
+ $hiddenurl{$referid}=1;
+ }
+ }
}
-
+
}
}
} else {
- $errtext.='Map not loaded: The file does not exist. ';
+ $errtext.='Map not loaded: The file ('.$fn.') does not exist. ';
}
}
# --------------------------------------------------------- Simplify expression
sub simplify {
- my $expression=shift;
+ my $expression=shift;
+# (0&1) = 1
+ $expression=~s/\(0\&(\d+)\)/$1/g;
# (8)=8
- $expression=~s/\((\d+)\)/$1/g;
+ $expression=~s/\((\d+)\)/$1/g;
# 8&8=8
- $expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g;
+ $expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g;
# 8|8=8
- $expression=~s/(\D)(\d+)\|\2(\D)/$1$2$3/g;
+ $expression=~s/(\D)(\d+)\|\2(\D)/$1$2$3/g;
# (5&3)&4=5&3&4
- $expression=~s/\((\d+)((?:\&\d+)+)\)\&(\d+\D)/$1$2\&$3/g;
+ $expression=~s/\((\d+)((?:\&\d+)+)\)\&(\d+\D)/$1$2\&$3/g;
# (((5&3)|(4&6)))=((5&3)|(4&6))
- $expression=~
- s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g;
+# $expression=~
+# s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g;
# ((5&3)|(4&6))|(1&2)=(5&3)|(4&6)|(1&2)
- $expression=~
- s/\((\(\d+(?:\&\d+)*\))((?:\|\(\d+(?:\&\d+)*\))+)\)\|(\(\d+(?:\&\d+)*\))/\($1$2\|$3\)/g;
- return $expression;
+ $expression=~
+ s/\((\(\d+(?:\&\d+)*\))((?:\|\(\d+(?:\&\d+)*\))+)\)\|(\(\d+(?:\&\d+)*\))/\($1$2\|$3\)/g;
+ return $expression;
}
# -------------------------------------------------------- Build condition hash
sub traceroute {
- my ($sofar,$rid,$beenhere)=@_;
- $sofar=simplify($sofar);
+ my ($sofar,$rid,$beenhere,$encflag,$hdnflag)=@_;
+ my $newsofar=$sofar=simplify($sofar);
unless ($beenhere=~/\&$rid\&/) {
- $beenhere.=$rid.'&';
- if (($retfurl eq '') && ($hash{'src_'.$rid})
- && ($hash{'src_'.$rid}!~/\.sequence$/)) {
- my ($mapid,$resid)=split(/\./,$rid);
- $retfurl=$hash{'src_'.$rid}.
- (($hash{'src_'.$rid}=~/\?/)?'&':'?').'symb='.
- &Apache::lonnet::symbclean(
- &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
- '___'.$resid.'___'.
- &Apache::lonnet::declutter($hash{'src_'.$rid}));
- }
- if (defined($hash{'conditions_'.$rid})) {
- $hash{'conditions_'.$rid}=simplify(
+ $beenhere.=$rid.'&';
+ my ($mapid,$resid)=split(/\./,$rid);
+ my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid});
+ my $hidden=&Apache::lonnet::EXT('resource.0.hiddenresource',$symb);
+
+ if ($hdnflag || lc($hidden) eq 'yes') {
+ $hiddenurl{$rid}=1;
+ }
+ if (!$hdnflag && lc($hidden) eq 'no') {
+ delete($hiddenurl{$rid});
+ }
+
+ my $encrypt=&Apache::lonnet::EXT('resource.0.encrypturl',$symb);
+ if ($encflag || lc($encrypt) eq 'yes') { $encurl{$rid}=1; }
+ if (($retfurl eq '') && ($hash{'src_'.$rid})
+ && ($hash{'src_'.$rid}!~/\.sequence$/)) {
+ $retfurl=$hash{'src_'.$rid}.(($hash{'src_'.$rid}=~/\?/)?'&':'?').
+ 'symb='.$symb;
+ }
+ if (defined($hash{'conditions_'.$rid})) {
+ $hash{'conditions_'.$rid}=simplify(
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')');
- } else {
- $hash{'conditions_'.$rid}=$sofar;
- }
- if (defined($hash{'is_map_'.$rid})) {
- if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) {
- &traceroute($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},'&');
- if (defined($hash{'map_finish_'.$hash{'src_'.$rid}})) {
- $sofar=
- $hash{'conditions_'.$hash{'map_finish_'.$hash{'src_'.$rid}}};
- }
- }
- }
- if (defined($hash{'to_'.$rid})) {
- foreach (split(/\,/,$hash{'to_'.$rid})) {
+ } else {
+ $hash{'conditions_'.$rid}=$sofar;
+ }
+ $newsofar=$hash{'conditions_'.$rid};
+ if (defined($hash{'is_map_'.$rid})) {
+ if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) {
+ $sofar=$newsofar=
+ &traceroute($sofar,
+ $hash{'map_start_'.$hash{'src_'.$rid}},'&',
+ $encflag || $encurl{$rid},
+ $hdnflag || $hiddenurl{$rid});
+ }
+ }
+ if (defined($hash{'to_'.$rid})) {
+ foreach (split(/\,/,$hash{'to_'.$rid})) {
my $further=$sofar;
if ($hash{'undercond_'.$_}) {
- if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) {
- $further=simplify('('.$further.')&('.
- $hash{'condid_'.$hash{'undercond_'.$_}}.')');
- } else {
- $errtext.='Undefined condition ID: '
- .$hash{'undercond_'.$_}.'. ';
- }
+ if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) {
+ $further=simplify('('.$further.')&('.
+ $hash{'condid_'.$hash{'undercond_'.$_}}.')');
+ } else {
+ $errtext.='Undefined condition ID: '
+ .$hash{'undercond_'.$_}.'. ';
+ }
}
- &traceroute($further,$hash{'goesto_'.$_},$beenhere);
- }
- }
+ $newsofar=&traceroute($further,$hash{'goesto_'.$_},$beenhere,
+ $encflag,$hdnflag);
+ }
+ }
}
+ return $newsofar;
}
# ------------------------------ Cascading conditions, quick access, parameters
@@ -379,88 +407,85 @@ sub accinit {
my $condcounter=0;
$acchash{'acc.cond.'.$short.'.0'}=0;
foreach (keys %hash) {
- if ($_=~/^conditions/) {
- my $expr=$hash{$_};
- foreach ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g) {
- my $sub=$_;
- my $orig=$_;
- $sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/;
- my $factor=$1;
- $sub=~s/$factor//g;
- $sub=~s/^\(/\($factor\(/;
- $sub.=')';
- $sub=simplify($sub);
- $orig=~s/(\W)/\\$1/g;
- $expr=~s/$orig/$sub/;
- }
- $hash{$_}=$expr;
- unless (defined($captured{$expr})) {
- $condcounter++;
- $captured{$expr}=$condcounter;
- $acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr;
- }
- } elsif ($_=~/^param_(\d+)\.(\d+)/) {
- my $prefix=&Apache::lonnet::declutter($hash{'map_id_'.$1}).
- '___'.$2.'___'.&Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2});
- foreach (split(/\&/,$hash{$_})) {
- my ($typename,$value)=split(/\=/,$_);
- my ($type,$name)=split(/\:/,$typename);
- $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name)}=
- &Apache::lonnet::unescape($value);
- $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name).'.type'}=
- &Apache::lonnet::unescape($type);
- }
- }
+ if ($_=~/^conditions/) {
+ my $expr=$hash{$_};
+ foreach ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g) {
+ my $sub=$_;
+ my $orig=$_;
+ $sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/;
+ my $factor=$1;
+ $sub=~s/$factor//g;
+ $sub=~s/^\(/\($factor\(/;
+ $sub.=')';
+ $sub=simplify($sub);
+ $orig=~s/(\W)/\\$1/g;
+ $expr=~s/$orig/$sub/;
+ }
+ $hash{$_}=$expr;
+ unless (defined($captured{$expr})) {
+ $condcounter++;
+ $captured{$expr}=$condcounter;
+ $acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr;
+ }
+ } elsif ($_=~/^param_(\d+)\.(\d+)/) {
+ my $prefix=&Apache::lonnet::encode_symb($hash{'map_id_'.$1},$2,
+ $hash{'src_'.$1.'.'.$2});
+ foreach (split(/\&/,$hash{$_})) {
+ my ($typename,$value)=split(/\=/,$_);
+ my ($type,$name)=split(/\:/,$typename);
+ $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name)}=
+ &Apache::lonnet::unescape($value);
+ $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name).'.type'}=
+ &Apache::lonnet::unescape($type);
+ }
+ }
}
foreach (keys %hash) {
if ($_=~/^ids/) {
- foreach (split(/\,/,$hash{$_})) {
- my $resid=$_;
- my $uri=$hash{'src_'.$resid};
- $uri=~s/^\/adm\/wrapper//;
- $uri=&Apache::lonnet::declutter($uri);
- my @uriparts=split(/\//,$uri);
- my $urifile=$uriparts[$#uriparts];
- $#uriparts--;
- my $uripath=join('/',@uriparts);
- if ($uripath) {
- my $uricond='0';
- if (defined($hash{'conditions_'.$resid})) {
- $uricond=$captured{$hash{'conditions_'.$resid}};
- }
- if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) {
- if ($acchash{'acc.res.'.$short.'.'.$uripath}=~
- /(\&\Q$urifile\E\:[^\&]*)/) {
- my $replace=$1;
- my $regexp=$replace;
- $regexp=~s/\|/\\\|/g;
- $acchash{'acc.res.'.$short.'.'.$uripath}
- =~s/$regexp/$replace\|$uricond/;
- } else {
- $acchash{'acc.res.'.$short.'.'.$uripath}.=
- $urifile.':'.$uricond.'&';
- }
- } else {
- $acchash{'acc.res.'.$short.'.'.$uripath}=
- '&'.$urifile.':'.$uricond.'&';
- }
- }
- }
- }
+ foreach (split(/\,/,$hash{$_})) {
+ my $resid=$_;
+ my $uri=$hash{'src_'.$resid};
+ $uri=~s/^\/adm\/wrapper//;
+ $uri=&Apache::lonnet::declutter($uri);
+ my @uriparts=split(/\//,$uri);
+ my $urifile=$uriparts[$#uriparts];
+ $#uriparts--;
+ my $uripath=join('/',@uriparts);
+ if ($uripath) {
+ my $uricond='0';
+ if (defined($hash{'conditions_'.$resid})) {
+ $uricond=$captured{$hash{'conditions_'.$resid}};
+ }
+ if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) {
+ if ($acchash{'acc.res.'.$short.'.'.$uripath}=~
+ /(\&\Q$urifile\E\:[^\&]*)/) {
+ my $replace=$1;
+ my $regexp=$replace;
+ #$regexp=~s/\|/\\\|/g;
+ $acchash{'acc.res.'.$short.'.'.$uripath}
+ =~s/\Q$regexp\E/$replace\|$uricond/;
+ } else {
+ $acchash{'acc.res.'.$short.'.'.$uripath}.=
+ $urifile.':'.$uricond.'&';
+ }
+ } else {
+ $acchash{'acc.res.'.$short.'.'.$uripath}=
+ '&'.$urifile.':'.$uricond.'&';
+ }
+ }
+ }
+ }
}
$acchash{'acc.res.'.$short.'.'}='&:0&';
my $courseuri=$uri;
$courseuri=~s/^\/res\///;
&Apache::lonnet::delenv('(acc\.|httpref\.)');
- &Apache::lonnet::appenv(%acchash,
- "request.course.id" => $short,
- "request.course.fn" => $fn,
- "request.course.uri" => $courseuri);
+ &Apache::lonnet::appenv(%acchash);
}
-# ------------------------------------- Selectively delete from randompick maps
+# ---------------- Selectively delete from randompick maps and hidden url parms
-sub pickrandom {
+sub hiddenurls {
my $randomoutentry='';
foreach my $rid (keys %randompick) {
my $rndpick=$randompick{$rid};
@@ -494,14 +519,22 @@ sub pickrandom {
$hash{'randomout_'.$currentrids[$k]}=1;
my ($mapid,$resid)=split(/\./,$currentrids[$k]);
$randomoutentry.='&'.
- &Apache::lonnet::symbclean(
- &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
- '___'.$resid.'___'.
- &Apache::lonnet::declutter($hash{'src_'.$currentrids[$k]})
- ).'&';
+ &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},
+ $resid,
+ $hash{'src_'.$currentrids[$k]}
+ ).'&';
}
}
}
+# ------------------------------ take care of explicitly hidden urls or folders
+ foreach my $rid (keys %hiddenurl) {
+ $hash{'randomout_'.$rid}=1;
+ my ($mapid,$resid)=split(/\./,$rid);
+ $randomoutentry.='&'.
+ &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,
+ $hash{'src_'.$rid}).'&';
+ }
+# --------------------------------------- append randomout entry to environment
if ($randomoutentry) {
&Apache::lonnet::appenv('acc.randomout' => $randomoutentry);
}
@@ -510,116 +543,168 @@ sub pickrandom {
# ---------------------------------------------------- Read map and all submaps
sub readmap {
- my $short=shift;
- $short=~s/^\///;
- my %cenv=&Apache::lonnet::coursedescription($short);
- my $fn=$cenv{'fn'};
- my $uri;
- $short=~s/\//\_/g;
- unless ($uri=$cenv{'url'}) {
- &Apache::lonnet::logthis("WARNING: ".
- "Could not load course $short.");
- return 'No course data available.';
- }
- @cond=('true:normal');
- unlink($fn.'.db');
- unlink($fn.'_symb.db');
- unlink($fn.'.state');
- unlink($fn.'parms.db');
- undef %randompick;
- $retfurl='';
- if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) &&
- (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) {
- %hash=();
- %parmhash=();
- $errtext='';
- $pc=0;
- my $furi=&Apache::lonnet::clutter($uri);
- $hash{'src_0.0'}=&versiontrack($furi);
- $hash{'title_0.0'}=&Apache::lonnet::metadata($uri,'title');
- $hash{'ids_'.$furi}='0.0';
- $hash{'is_map_0.0'}=1;
- loadmap($uri);
- if (defined($hash{'map_start_'.$uri})) {
- &traceroute('0',$hash{'map_start_'.$uri},'&');
- &accinit($uri,$short,$fn);
- &pickrandom();
- }
-# ------------------------------------------------------------ Version tracking
- &processversionfile(%cenv);
- foreach (keys %hash) {
- if ($_=~/^src\_/) {
- $hash{$_}=&putinversion($hash{$_});
+ my $short=shift;
+ $short=~s/^\///;
+ my %cenv=&Apache::lonnet::coursedescription($short);
+ my $fn=$cenv{'fn'};
+ my $uri;
+ $short=~s/\//\_/g;
+ unless ($uri=$cenv{'url'}) {
+ &Apache::lonnet::logthis("WARNING: ".
+ "Could not load course $short.");
+ return 'No course data available.';
+ }
+ @cond=('true:normal');
+
+ open(LOCKFILE,">$fn.db.lock");
+ my $lock=0;
+ if (flock(LOCKFILE,LOCK_EX|LOCK_NB)) {
+ $lock=1;
+ unlink($fn.'.db');
+ unlink($fn.'_symb.db');
+ unlink($fn.'.state');
+ unlink($fn.'parms.db');
+ }
+ undef %randompick;
+ undef %hiddenurl;
+ undef %encurl;
+ $retfurl='';
+ if ($lock && (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) &&
+ (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) {
+ %hash=();
+ %parmhash=();
+ $errtext='';
+ $pc=0;
+ &processversionfile(%cenv);
+ my $furi=&Apache::lonnet::clutter($uri);
+ $hash{'src_0.0'}=&versiontrack($furi);
+ $hash{'title_0.0'}=&Apache::lonnet::metadata($uri,'title');
+ $hash{'ids_'.$furi}='0.0';
+ $hash{'is_map_0.0'}=1;
+ loadmap($uri);
+ if (defined($hash{'map_start_'.$uri})) {
+ &Apache::lonnet::appenv("request.course.id" => $short,
+ "request.course.fn" => $fn,
+ "request.course.uri" => $uri);
+ &traceroute('0',$hash{'map_start_'.$uri},'&');
+ &accinit($uri,$short,$fn);
+ &hiddenurls();
+ }
+# ------------------------------------------------------- Put versions into src
+ foreach (keys %hash) {
+ if ($_=~/^src\_/) {
+ $hash{$_}=&putinversion($hash{$_});
+ }
+ }
+# ---------------------------------------------------------------- Encrypt URLs
+ foreach (keys %encurl) {
+# $hash{'src_'.$_}=&Apache::lonenc::encrypted($hash{'src_'.$_});
+ $hash{'encrypted_'.$_}=1;
+ }
+# ----------------------------------------------- Close hashes to finally store
+# --------------------------------- Routine must pass this point, no early outs
+ $hash{'first_url'}=$retfurl;
+ unless ((untie(%hash)) && (untie(%parmhash))) {
+ &Apache::lonnet::logthis("WARNING: ".
+ "Could not untie coursemap $fn for $uri.");
+ }
+# ---------------------------------------------------- Store away initial state
+ {
+ my $cfh;
+ if (open($cfh,">$fn.state")) {
+ print $cfh join("\n",@cond);
+ } else {
+ &Apache::lonnet::logthis("WARNING: ".
+ "Could not write statemap $fn for $uri.");
+ }
}
+ flock(LOCKFILE,LOCK_UN);
+ close(LOCKFILE);
+ } else {
+ # if we are here it is likely because we are already trying to
+ # initialize the course in another child, busy wait trying to
+ # tie the hashes for the next 90 seconds, if we succeed forward
+ # them on to navmaps, if we fail, throw up the Could not init
+ # course screen
+ if ($lock) {
+ # Got the lock but not the DB files
+ flock(LOCKFILE,LOCK_UN);
+ }
+ untie(%hash);
+ untie(%parmhash);
+ &Apache::lonnet::logthis("WARNING: ".
+ "Could not tie coursemap $fn for $uri.");
+ my $i=0;
+ while($i<90) {
+ $i++;
+ sleep(1);
+ if (flock(LOCKFILE,LOCK_EX|LOCK_NB) &&
+ (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640))) {
+ if (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_READER(),0640)) {
+ $retfurl='/adm/navmaps';
+ &Apache::lonnet::appenv("request.course.id" => $short,
+ "request.course.fn" => $fn,
+ "request.course.uri" => $uri);
+ untie(%hash);
+ untie(%parmhash);
+ last;
+ }
+ }
+ untie(%hash);
+ untie(%parmhash);
+ }
+ flock(LOCKFILE,LOCK_UN);
+ close(LOCKFILE);
}
- unless ((untie(%hash)) && (untie(%parmhash))) {
- &Apache::lonnet::logthis("WARNING: ".
- "Could not untie coursemap $fn for $uri.");
- }
- {
- my $cfh;
- if ($cfh=Apache::File->new(">$fn.state")) {
- print $cfh join("\n",@cond);
- } else {
- &Apache::lonnet::logthis("WARNING: ".
- "Could not write statemap $fn for $uri.");
- }
- }
- } else {
- &Apache::lonnet::logthis("WARNING: ".
- "Could not tie coursemap $fn for $uri.");
- }
- &Apache::lonmsg::author_res_msg($ENV{'request.course.uri'},$errtext);
+ &Apache::lonmsg::author_res_msg($env{'request.course.uri'},$errtext);
# ------------------------------------------------- Check for critical messages
- my @what=&Apache::lonnet::dump('critical',$ENV{'user.domain'},
- $ENV{'user.name'});
+ my @what=&Apache::lonnet::dump('critical',$env{'user.domain'},
+ $env{'user.name'});
if ($what[0]) {
if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
$retfurl='/adm/email?critical=display';
}
}
- return ($retfurl,$errtext);
+ return ($retfurl,$errtext);
}
# ------------------------------------------------------- Evaluate state string
sub evalstate {
-
- my $fn=$ENV{'request.course.fn'}.'.state';
- my $state='2';
+ my $fn=$env{'request.course.fn'}.'.state';
+ my $state='';
if (-e $fn) {
- my @conditions=();
- {
- my $fh=Apache::File->new($fn);
- @conditions=<$fh>;
- }
- my $safeeval = new Safe;
- my $safehole = new Safe::Hole;
- $safeeval->permit("entereval");
- $safeeval->permit(":base_math");
- $safeeval->deny(":base_io");
- $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
- foreach (@conditions) {
- my $line=$_;
- chomp($line);
- my ($condition,$weight)=split(/\:/,$_);
- if ($safeeval->reval($condition)) {
- if ($weight eq 'force') {
- $state.='3';
- } else {
- $state.='2';
- }
- } else {
- if ($weight eq 'stop') {
- $state.='0';
- } else {
- $state.='1';
- }
- }
- }
+ my @conditions=();
+ {
+ my $fh=Apache::File->new($fn);
+ @conditions=<$fh>;
+ }
+ my $safeeval = new Safe;
+ my $safehole = new Safe::Hole;
+ $safeeval->permit("entereval");
+ $safeeval->permit(":base_math");
+ $safeeval->deny(":base_io");
+ $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
+ foreach my $line (@conditions) {
+ chomp($line);
+ my ($condition,$weight)=split(/\:/,$line);
+ if ($safeeval->reval($condition)) {
+ if ($weight eq 'force') {
+ $state.='3';
+ } else {
+ $state.='2';
+ }
+ } else {
+ if ($weight eq 'stop') {
+ $state.='0';
+ } else {
+ $state.='1';
+ }
+ }
+ }
}
- &Apache::lonnet::appenv('user.state.'.$ENV{'request.course.id'} => $state);
+ &Apache::lonnet::appenv('user.state.'.$env{'request.course.id'} => $state);
return $state;
}