version 1.206, 2002/04/04 20:06:20
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version 1.218, 2002/05/13 09:26:29
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Line 84 qw(%perlvar %hostname %homecache %hostip
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Line 84 qw(%perlvar %hostname %homecache %hostip
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use IO::Socket; |
use IO::Socket; |
use GDBM_File; |
use GDBM_File; |
use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
use HTML::TokeParser; |
use HTML::LCParser; |
use Fcntl qw(:flock); |
use Fcntl qw(:flock); |
my $readit; |
my $readit; |
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Line 627 sub subscribe {
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Line 627 sub subscribe {
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sub repcopy { |
sub repcopy { |
my $filename=shift; |
my $filename=shift; |
$filename=~s/\/+/\//g; |
$filename=~s/\/+/\//g; |
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if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; } |
my $transname="$filename.in.transfer"; |
my $transname="$filename.in.transfer"; |
if ((-e $filename) || (-e $transname)) { return OK; } |
if ((-e $filename) || (-e $transname)) { return OK; } |
my $remoteurl=subscribe($filename); |
my $remoteurl=subscribe($filename); |
Line 716 sub flushcourselogs {
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Line 717 sub flushcourselogs {
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&logthis('Flushing course log buffers'); |
&logthis('Flushing course log buffers'); |
foreach (keys %courselogs) { |
foreach (keys %courselogs) { |
my $crsid=$_; |
my $crsid=$_; |
&logthis(":$crsid:$coursehombuf{$crsid}"); |
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if (&reply('log:'.$coursedombuf{$crsid}.':'. |
if (&reply('log:'.$coursedombuf{$crsid}.':'. |
&escape($courselogs{$crsid}), |
&escape($courselogs{$crsid}), |
$coursehombuf{$crsid}) eq 'ok') { |
$coursehombuf{$crsid}) eq 'ok') { |
Line 1139 sub store {
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Line 1139 sub store {
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if ($stuname) { $home=&homeserver($stuname,$domain); } |
if ($stuname) { $home=&homeserver($stuname,$domain); } |
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$symb=&symbclean($symb); |
if (!$symb) { unless ($symb=&symbread()) { return ''; } } |
if (!$symb) { unless ($symb=&symbread()) { return ''; } } |
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&devalidate($symb); |
&devalidate($symb); |
Line 1169 sub cstore {
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Line 1170 sub cstore {
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if ($stuname) { $home=&homeserver($stuname,$domain); } |
if ($stuname) { $home=&homeserver($stuname,$domain); } |
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$symb=&symbclean($symb); |
if (!$symb) { unless ($symb=&symbread()) { return ''; } } |
if (!$symb) { unless ($symb=&symbread()) { return ''; } } |
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&devalidate($symb); |
&devalidate($symb); |
Line 1204 sub restore {
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Line 1206 sub restore {
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if (!$symb) { |
if (!$symb) { |
unless ($symb=escape(&symbread())) { return ''; } |
unless ($symb=escape(&symbread())) { return ''; } |
} else { |
} else { |
$symb=&escape($symb); |
$symb=&escape(&symbclean($symb)); |
} |
} |
if (!$namespace) { |
if (!$namespace) { |
unless ($namespace=$ENV{'request.course.id'}) { |
unless ($namespace=$ENV{'request.course.id'}) { |
Line 1877 sub modifyuser {
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Line 1879 sub modifyuser {
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# ----------------------------------------------------------------- Create User |
# ----------------------------------------------------------------- Create User |
if (($uhome eq 'no_host') && ($umode) && ($upass)) { |
if (($uhome eq 'no_host') && ($umode) && ($upass)) { |
my $unhome=''; |
my $unhome=''; |
if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) { |
if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) { |
$unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'}; |
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} elsif (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) { |
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$unhome = $desiredhome; |
$unhome = $desiredhome; |
} else { |
} elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) { |
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$unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'}; |
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} else { # load balancing routine for determining $unhome |
my $tryserver; |
my $tryserver; |
my $loadm=10000000; |
my $loadm=10000000; |
foreach $tryserver (keys %libserv) { |
foreach $tryserver (keys %libserv) { |
Line 1907 sub modifyuser {
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Line 1909 sub modifyuser {
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if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) { |
if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) { |
return 'error: verify home'; |
return 'error: verify home'; |
} |
} |
} |
} # End of creation of new user |
# ---------------------------------------------------------------------- Add ID |
# ---------------------------------------------------------------------- Add ID |
if ($uid) { |
if ($uid) { |
$uid=~tr/A-Z/a-z/; |
$uid=~tr/A-Z/a-z/; |
Line 1925 sub modifyuser {
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Line 1927 sub modifyuser {
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my %names=&get('environment', |
my %names=&get('environment', |
['firstname','middlename','lastname','generation'], |
['firstname','middlename','lastname','generation'], |
$udom,$uname); |
$udom,$uname); |
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if ($names{'firstname'} =~ m/^error:.*/) { %names=(); } |
if ($first) { $names{'firstname'} = $first; } |
if ($first) { $names{'firstname'} = $first; } |
if ($middle) { $names{'middlename'} = $middle; } |
if ($middle) { $names{'middlename'} = $middle; } |
if ($last) { $names{'lastname'} = $last; } |
if ($last) { $names{'lastname'} = $last; } |
Line 1942 sub modifyuser {
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Line 1945 sub modifyuser {
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sub modifystudent { |
sub modifystudent { |
my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec, |
my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec, |
$end,$start,$forceid)=@_; |
$end,$start,$forceid,$desiredhome)=@_; |
my $cid=''; |
my $cid=''; |
unless ($cid=$ENV{'request.course.id'}) { |
unless ($cid=$ENV{'request.course.id'}) { |
return 'not_in_class'; |
return 'not_in_class'; |
} |
} |
# --------------------------------------------------------------- Make the user |
# --------------------------------------------------------------- Make the user |
my $reply=&modifyuser |
my $reply=&modifyuser |
($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid); |
($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid, |
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$desiredhome); |
unless ($reply eq 'ok') { return $reply; } |
unless ($reply eq 'ok') { return $reply; } |
my $uhome=&homeserver($uname,$udom); |
my $uhome=&homeserver($uname,$udom); |
if (($uhome eq '') || ($uhome eq 'no_host')) { |
if (($uhome eq '') || ($uhome eq 'no_host')) { |
Line 2192 sub courseresdata {
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Line 2196 sub courseresdata {
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# --------------------------------------------------------- Value of a Variable |
# --------------------------------------------------------- Value of a Variable |
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sub EXT { |
sub EXT { |
my ($varname,$symbparm)=@_; |
my ($varname,$symbparm,$udom,$uname)=@_; |
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unless ($varname) { return ''; } |
unless ($varname) { return ''; } |
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#get real user name/domain, courseid and symb |
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my $courseid; |
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if (!($uname && $udom)) { |
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(my $cursymb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser(); |
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if (!$symbparm) { $symbparm=$cursymb; } |
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} else { |
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$courseid=$ENV{'request.course.id'}; |
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} |
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my ($realm,$space,$qualifier,@therest)=split(/\./,$varname); |
my ($realm,$space,$qualifier,@therest)=split(/\./,$varname); |
my $rest; |
my $rest; |
if ($therest[0]) { |
if ($therest[0]) { |
Line 2208 sub EXT {
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Line 2223 sub EXT {
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if ($realm eq 'user') { |
if ($realm eq 'user') { |
# --------------------------------------------------------------- user.resource |
# --------------------------------------------------------------- user.resource |
if ($space eq 'resource') { |
if ($space eq 'resource') { |
my %restored=&restore(); |
my %restored=&restore(undef,undef,$udom,$uname); |
return $restored{$qualifierrest}; |
return $restored{$qualifierrest}; |
# ----------------------------------------------------------------- user.access |
# ----------------------------------------------------------------- user.access |
} elsif ($space eq 'access') { |
} elsif ($space eq 'access') { |
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# FIXME - not supporting calls for a specific user |
return &allowed($qualifier,$rest); |
return &allowed($qualifier,$rest); |
# ------------------------------------------ user.preferences, user.environment |
# ------------------------------------------ user.preferences, user.environment |
} elsif (($space eq 'preferences') || ($space eq 'environment')) { |
} elsif (($space eq 'preferences') || ($space eq 'environment')) { |
return $ENV{join('.',('environment',$qualifierrest))}; |
if (($uname eq $ENV{'user.name'}) && |
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($udom eq $ENV{'user.domain'})) { |
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return $ENV{join('.',('environment',$qualifierrest))}; |
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} else { |
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my %returnhash=&userenvironment($udom,$uname,$qualifierrest); |
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return $returnhash{$qualifierrest}; |
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} |
# ----------------------------------------------------------------- user.course |
# ----------------------------------------------------------------- user.course |
} elsif ($space eq 'course') { |
} elsif ($space eq 'course') { |
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# FIXME - not supporting calls for a specific user |
return $ENV{join('.',('request.course',$qualifier))}; |
return $ENV{join('.',('request.course',$qualifier))}; |
# ------------------------------------------------------------------- user.role |
# ------------------------------------------------------------------- user.role |
} elsif ($space eq 'role') { |
} elsif ($space eq 'role') { |
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# FIXME - not supporting calls for a specific user |
my ($role,$where)=split(/\./,$ENV{'request.role'}); |
my ($role,$where)=split(/\./,$ENV{'request.role'}); |
if ($qualifier eq 'value') { |
if ($qualifier eq 'value') { |
return $role; |
return $role; |
Line 2229 sub EXT {
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Line 2253 sub EXT {
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} |
} |
# ----------------------------------------------------------------- user.domain |
# ----------------------------------------------------------------- user.domain |
} elsif ($space eq 'domain') { |
} elsif ($space eq 'domain') { |
return $ENV{'user.domain'}; |
return $udom; |
# ------------------------------------------------------------------- user.name |
# ------------------------------------------------------------------- user.name |
} elsif ($space eq 'name') { |
} elsif ($space eq 'name') { |
return $ENV{'user.name'}; |
return $uname; |
# ---------------------------------------------------- Any other user namespace |
# ---------------------------------------------------- Any other user namespace |
} else { |
} else { |
my $item=($rest)?$qualifier.'.'.$rest:$qualifier; |
my $item=($rest)?$qualifier.'.'.$rest:$qualifier; |
Line 2249 sub EXT {
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Line 2273 sub EXT {
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} |
} |
} elsif ($realm eq 'course') { |
} elsif ($realm eq 'course') { |
# ---------------------------------------------------------- course.description |
# ---------------------------------------------------------- course.description |
return $ENV{'course.'.$ENV{'request.course.id'}.'.'. |
return $ENV{'course.'.$courseid.'.'.$spacequalifierrest}; |
$spacequalifierrest}; |
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} elsif ($realm eq 'resource') { |
} elsif ($realm eq 'resource') { |
if ($ENV{'request.course.id'}) { |
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# print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest; |
if ($courseid eq $ENV{'request.course.id'}) { |
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#print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest; |
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# ----------------------------------------------------- Cascading lookup scheme |
# ----------------------------------------------------- Cascading lookup scheme |
my $symbp; |
if (!$symbparm) { $symbparm=&symbread(); } |
if ($symbparm) { |
my $symbp=$symbparm; |
$symbp=$symbparm; |
my $mapp=(split(/\_\_\_/,$symbp))[0]; |
} else { |
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$symbp=&symbread(); |
my $symbparm=$symbp.'.'.$spacequalifierrest; |
} |
my $mapparm=$mapp.'___(all).'.$spacequalifierrest; |
my $mapp=(split(/\_\_\_/,$symbp))[0]; |
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my $section; |
my $symbparm=$symbp.'.'.$spacequalifierrest; |
if (($ENV{'user.name'} eq $uname) && |
my $mapparm=$mapp.'___(all).'.$spacequalifierrest; |
($ENV{'user.domain'} eq $udom)) { |
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$section={'request.course.sec'}; |
my $seclevel= |
} else { |
$ENV{'request.course.id'}.'.['. |
$section=&usection($udom,$uname,$courseid); |
$ENV{'request.course.sec'}.'].'.$spacequalifierrest; |
} |
my $seclevelr= |
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$ENV{'request.course.id'}.'.['. |
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$ENV{'request.course.sec'}.'].'.$symbparm; |
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my $seclevelm= |
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$ENV{'request.course.id'}.'.['. |
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$ENV{'request.course.sec'}.'].'.$mapparm; |
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my $courselevel= |
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$ENV{'request.course.id'}.'.'.$spacequalifierrest; |
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my $courselevelr= |
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$ENV{'request.course.id'}.'.'.$symbparm; |
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my $courselevelm= |
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$ENV{'request.course.id'}.'.'.$mapparm; |
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# ----------------------------------------------------------- first, check user |
my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest; |
my %resourcedata=get('resourcedata', |
my $seclevelr=$courseid.'.['.$section.'].'.$symbparm; |
[$courselevelr,$courselevelm,$courselevel]); |
my $seclevelm=$courseid.'.['.$section.'].'.$mapparm; |
if (($resourcedata{$courselevelr}!~/^error\:/) && |
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($resourcedata{$courselevelr}!~/^con_lost/)) { |
my $courselevel=$courseid.'.'.$spacequalifierrest; |
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my $courselevelr=$courseid.'.'.$symbparm; |
if ($resourcedata{$courselevelr}) { |
my $courselevelm=$courseid.'.'.$mapparm; |
return $resourcedata{$courselevelr}; } |
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if ($resourcedata{$courselevelm}) { |
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return $resourcedata{$courselevelm}; } |
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if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; } |
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} else { |
# ----------------------------------------------------------- first, check user |
if ($resourcedata{$courselevelr}!~/No such file/) { |
my %resourcedata=&get('resourcedata', |
&logthis("<font color=blue>WARNING:". |
[$courselevelr,$courselevelm,$courselevel], |
" Trying to get resource data for ".$ENV{'user.name'}." at " |
$udom,$uname); |
.$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}. |
if (($resourcedata{$courselevelr}!~/^error\:/) && |
"</font>"); |
($resourcedata{$courselevelr}!~/^con_lost/)) { |
} |
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} |
if ($resourcedata{$courselevelr}) { |
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return $resourcedata{$courselevelr}; } |
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if ($resourcedata{$courselevelm}) { |
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return $resourcedata{$courselevelm}; } |
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if ($resourcedata{$courselevel}) { |
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return $resourcedata{$courselevel}; } |
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} else { |
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if ($resourcedata{$courselevelr}!~/No such file/) { |
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&logthis("<font color=blue>WARNING:". |
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" Trying to get resource data for ". |
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$uname." at ".$udom.": ". |
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$resourcedata{$courselevelr}."</font>"); |
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} |
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} |
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# -------------------------------------------------------- second, check course |
# -------------------------------------------------------- second, check course |
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my $coursereply=&courseresdata( |
my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'}, |
$ENV{'course.'.$ENV{'request.course.id'}.'.num'}, |
$ENV{'course.'.$courseid.'.domain'}, |
$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}, |
($seclevelr,$seclevelm,$seclevel, |
($seclevelr,$seclevelm,$seclevel, |
$courselevelr,$courselevelm, |
$courselevelr,$courselevelm,$courselevel)); |
$courselevel)); |
if ($coursereply) { return $coursereply; } |
if ($coursereply) { return $coursereply; } |
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# ------------------------------------------------------ third, check map parms |
# ------------------------------------------------------ third, check map parms |
my %parmhash=(); |
my %parmhash=(); |
my $thisparm=''; |
my $thisparm=''; |
if (tie(%parmhash,'GDBM_File', |
if (tie(%parmhash,'GDBM_File', |
$ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) { |
$ENV{'request.course.fn'}.'_parms.db', |
$thisparm=$parmhash{$symbparm}; |
&GDBM_READER,0640)) { |
untie(%parmhash); |
$thisparm=$parmhash{$symbparm}; |
} |
untie(%parmhash); |
if ($thisparm) { return $thisparm; } |
} |
} |
if ($thisparm) { return $thisparm; } |
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} |
# --------------------------------------------- last, look in resource metadata |
# --------------------------------------------- last, look in resource metadata |
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$spacequalifierrest=~s/\./\_/; |
$spacequalifierrest=~s/\./\_/; |
my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest); |
my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest); |
if ($metadata) { return $metadata; } |
if ($metadata) { return $metadata; } |
$metadata=&metadata($ENV{'request.filename'}, |
$metadata=&metadata($ENV{'request.filename'}, |
'parameter_'.$spacequalifierrest); |
'parameter_'.$spacequalifierrest); |
if ($metadata) { return $metadata; } |
if ($metadata) { return $metadata; } |
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# ------------------------------------------------------------------ Cascade up |
# ------------------------------------------------------------------ Cascade up |
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unless ($space eq '0') { |
unless ($space eq '0') { |
my ($part,$id)=split(/\_/,$space); |
my ($part,$id)=split(/\_/,$space); |
if ($id) { |
if ($id) { |
my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest, |
my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest, |
$symbparm,$udom,$uname); |
$symbparm); |
if ($partgeneral) { return $partgeneral; } |
if ($partgeneral) { return $partgeneral; } |
} else { |
} else { |
my $resourcegeneral=&EXT('resource.0.'.$qualifierrest, |
my $resourcegeneral=&EXT('resource.0.'.$qualifierrest, |
$symbparm,$udom,$uname); |
$symbparm); |
if ($resourcegeneral) { return $resourcegeneral; } |
if ($resourcegeneral) { return $resourcegeneral; } |
} |
} |
} |
} |
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# ---------------------------------------------------- Any other user namespace |
# ---------------------------------------------------- Any other user namespace |
} elsif ($realm eq 'environment') { |
} elsif ($realm eq 'environment') { |
Line 2388 sub metadata {
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Line 2406 sub metadata {
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my %metathesekeys=(); |
my %metathesekeys=(); |
unless ($filename=~/\.meta$/) { $filename.='.meta'; } |
unless ($filename=~/\.meta$/) { $filename.='.meta'; } |
my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename); |
my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename); |
my $parser=HTML::TokeParser->new(\$metastring); |
my $parser=HTML::LCParser->new(\$metastring); |
my $token; |
my $token; |
undef %metathesekeys; |
undef %metathesekeys; |
while ($token=$parser->get_token) { |
while ($token=$parser->get_token) { |
Line 2477 sub metadata {
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Line 2495 sub metadata {
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$metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_}; |
$metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_}; |
} |
} |
unless ( |
unless ( |
$metacache{$uri.':'.$unikey}=$parser->get_text('/'.$entry) |
$metacache{$uri.':'.$unikey}=&HTML::Entities::decode($parser->get_text('/'.$entry)) |
) { $metacache{$uri.':'.$unikey}= |
) { $metacache{$uri.':'.$unikey}= |
$metacache{$uri.':'.$unikey.'.default'}; |
$metacache{$uri.':'.$unikey.'.default'}; |
} |
} |
Line 2515 sub symblist {
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Line 2533 sub symblist {
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return 'error'; |
return 'error'; |
} |
} |
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# --------------------------------------------------------------- Verify a symb |
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sub symbverify { |
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my ($symb,$thisfn)=@_; |
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$thisfn=&declutter($thisfn); |
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# direct jump to resource in page or to a sequence - will construct own symbs |
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if ($thisfn=~/\.(page|sequence)$/) { return 1; } |
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# check URL part |
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my ($map,$resid,$url)=split(/\_\_\_/,$symb); |
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unless (&symbclean($url) eq &symbclean($thisfn)) { return 0; } |
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$symb=&symbclean($symb); |
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my %bighash; |
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my $okay=0; |
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if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
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&GDBM_READER,0640)) { |
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my $ids=$bighash{'ids_/res/'.$thisfn}; |
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unless ($ids) { |
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$ids=$bighash{'ids_/'.$thisfn}; |
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} |
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if ($ids) { |
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# ------------------------------------------------------------------- Has ID(s) |
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foreach (split(/\,/,$ids)) { |
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my ($mapid,$resid)=split(/\./,$_); |
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if ( |
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&symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn) |
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eq $symb) { |
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$okay=1; |
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} |
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} |
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} |
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untie(%bighash); |
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} |
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return $okay; |
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} |
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# --------------------------------------------------------------- Clean-up symb |
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sub symbclean { |
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my $symb=shift; |
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# remove version from map |
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$symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/; |
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# remove version from URL |
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$symb=~s/\.(\d+)\.(\w+)$/\.$2/; |
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return $symb; |
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} |
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# ------------------------------------------------------ Return symb list entry |
# ------------------------------------------------------ Return symb list entry |
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sub symbread { |
sub symbread { |
my $thisfn=shift; |
my $thisfn=shift; |
unless ($thisfn) { |
unless ($thisfn) { |
if ($ENV{'request.symb'}) { return $ENV{'request.symb'}; } |
if ($ENV{'request.symb'}) { return &symbclean($ENV{'request.symb'}); } |
$thisfn=$ENV{'request.filename'}; |
$thisfn=$ENV{'request.filename'}; |
} |
} |
$thisfn=declutter($thisfn); |
$thisfn=declutter($thisfn); |
Line 2579 sub symbread {
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Line 2648 sub symbread {
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} |
} |
} |
} |
if ($syval) { |
if ($syval) { |
return $syval.'___'.$thisfn; |
return &symbclean($syval.'___'.$thisfn); |
} |
} |
} |
} |
&appenv('request.ambiguous' => $thisfn); |
&appenv('request.ambiguous' => $thisfn); |
Line 2724 sub goodbye {
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Line 2793 sub goodbye {
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} |
} |
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BEGIN { |
BEGIN { |
# ------------------------------------------------------------ Read access.conf |
# ------------------------------------------- Read access.conf and loncapa.conf |
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# (eventually access.conf will become deprecated) |
unless ($readit) { |
unless ($readit) { |
|
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{ |
{ |
my $config=Apache::File->new("/etc/httpd/conf/access.conf"); |
my $config=Apache::File->new("/etc/httpd/conf/access.conf"); |
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while (my $configline=<$config>) { |
while (my $configline=<$config>) { |
if ($configline =~ /PerlSetVar/) { |
if ($configline =~ /^[^\#]*PerlSetVar/) { |
|
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
|
chomp($varvalue); |
|
$perlvar{$varname}=$varvalue; |
|
} |
|
} |
|
} |
|
{ |
|
my $config=Apache::File->new("/etc/httpd/conf/loncapa.conf"); |
|
|
|
while (my $configline=<$config>) { |
|
if ($configline =~ /^[^\#]*PerlSetVar/) { |
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
chomp($varvalue); |
chomp($varvalue); |
$perlvar{$varname}=$varvalue; |
$perlvar{$varname}=$varvalue; |