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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.542 and 1.551

version 1.542, 2004/09/17 02:40:35 version 1.551, 2004/10/12 20:51:54
Line 39  qw(%perlvar %hostname %homecache %badSer Line 39  qw(%perlvar %hostname %homecache %badSer
    %libserv %pr %prp %metacache %packagetab %titlecache %courseresversioncache %resversioncache     %libserv %pr %prp %metacache %packagetab %titlecache %courseresversioncache %resversioncache
    %courselogs %accesshash %userrolehash $processmarker $dumpcount      %courselogs %accesshash %userrolehash $processmarker $dumpcount 
    %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseresdatacache      %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseresdatacache 
    %userresdatacache %usectioncache %domaindescription %domain_auth_def %domain_auth_arg_def      %userresdatacache %getsectioncache %domaindescription %domain_auth_def %domain_auth_arg_def 
    %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir);     %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir);
   
 use IO::Socket;  use IO::Socket;
Line 52  use Apache::lonlocal; Line 52  use Apache::lonlocal;
 use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw);  use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw);
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
 my $readit;  my $readit;
   my $max_connection_retries = 10;     # Or some such value.
   
 =pod  =pod
   
Line 116  sub logperm { Line 117  sub logperm {
 sub subreply {  sub subreply {
     my ($cmd,$server)=@_;      my ($cmd,$server)=@_;
     my $peerfile="$perlvar{'lonSockDir'}/$server";      my $peerfile="$perlvar{'lonSockDir'}/$server";
     my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",      #
                                      Type    => SOCK_STREAM,      #  With loncnew process trimming, there's a timing hole between lonc server
                                      Timeout => 10)      #  process exit and the master server picking up the listen on the AF_UNIX
        or return "con_lost";      #  socket.  In that time interval, a lock file will exist:
     print $client "$cmd\n";  
     my $answer=<$client>;      my $lockfile=$peerfile.".lock";
     if (!$answer) { $answer="con_lost"; }      while (-e $lockfile) { # Need to wait for the lockfile to disappear.
     chomp($answer);   sleep(1);
       }
       # At this point, either a loncnew parent is listening or an old lonc
       # or loncnew child is listening so we can connect or everything's dead.
       #
       #   We'll give the connection a few tries before abandoning it.  If
       #   connection is not possible, we'll con_lost back to the client.
       #   
       my $client;
       for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
    $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
         Type    => SOCK_STREAM,
         Timeout => 10);
    if($client) {
       last; # Connected!
    }
    sleep(1); # Try again later if failed connection.
       }
       my $answer;
       if ($client) {
    print $client "$cmd\n";
    $answer=<$client>;
    if (!$answer) { $answer="con_lost"; }
    chomp($answer);
       } else {
    $answer = 'con_lost'; # Failed connection.
       }
     return $answer;      return $answer;
 }  }
   
Line 771  sub getsection { Line 798  sub getsection {
     my ($udom,$unam,$courseid)=@_;      my ($udom,$unam,$courseid)=@_;
     $courseid=~s/\_/\//g;      $courseid=~s/\_/\//g;
     $courseid=~s/^(\w)/\/$1/;      $courseid=~s/^(\w)/\/$1/;
   
       my $hashid="$udom:$unam:$courseid";
       my ($result,$cached)=&is_cached(\%getsectioncache,$hashid,'getsection');
       if (defined($cached)) { return $result; }
   
     my %Pending;       my %Pending; 
     my %Expired;      my %Expired;
     #      #
Line 795  sub getsection { Line 827  sub getsection {
         if ($key eq $courseid.'_st') { $section=''; }          if ($key eq $courseid.'_st') { $section=''; }
         my ($dummy,$end,$start)=split(/\_/,&unescape($value));          my ($dummy,$end,$start)=split(/\_/,&unescape($value));
         my $now=time;          my $now=time;
         if (defined($end) && ($now > $end)) {          if (defined($end) && $end && ($now > $end)) {
             $Expired{$end}=$section;              $Expired{$end}=$section;
             next;              next;
         }          }
         if (defined($start) && ($now < $start)) {          if (defined($start) && $start && ($now < $start)) {
             $Pending{$start}=$section;              $Pending{$start}=$section;
             next;              next;
         }          }
         return $section;          return &do_cache(\%getsectioncache,$hashid,$section,'getsection');
     }      }
     #      #
     # Presumedly there will be few matching roles from the above      # Presumedly there will be few matching roles from the above
     # loop and the sorting time will be negligible.      # loop and the sorting time will be negligible.
     if (scalar(keys(%Pending))) {      if (scalar(keys(%Pending))) {
         my ($time) = sort {$a <=> $b} keys(%Pending);          my ($time) = sort {$a <=> $b} keys(%Pending);
         return $Pending{$time};          return &do_cache(\%getsectioncache,$hashid,$Pending{$time},'getsection');
     }       } 
     if (scalar(keys(%Expired))) {      if (scalar(keys(%Expired))) {
         my @sorted = sort {$a <=> $b} keys(%Expired);          my @sorted = sort {$a <=> $b} keys(%Expired);
         my $time = pop(@sorted);          my $time = pop(@sorted);
         return $Expired{$time};          return &do_cache(\%getsectioncache,$hashid,$Expired{$time},'getsection');
     }      }
     return '-1';      return &do_cache(\%getsectioncache,$hashid,'-1','getsection');
 }  }
   
   
Line 826  my $disk_caching_disabled=0; Line 858  my $disk_caching_disabled=0;
 sub devalidate_cache {  sub devalidate_cache {
     my ($cache,$id,$name) = @_;      my ($cache,$id,$name) = @_;
     delete $$cache{$id.'.time'};      delete $$cache{$id.'.time'};
       delete $$cache{$id.'.file'};
     delete $$cache{$id};      delete $$cache{$id};
     if (1 || $disk_caching_disabled) { return; }      if (1 || $disk_caching_disabled) { return; }
     my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";      my $filename=$perlvar{'lonDaemons'}.'/tmp/lonnet_internal_cache_'.$name.".db";
Line 864  sub is_cached { Line 897  sub is_cached {
  return (undef,undef);   return (undef,undef);
     } else {      } else {
  if (time-($$cache{$id.'.time'})>$time) {   if (time-($$cache{$id.'.time'})>$time) {
 #    &logthis("Devalidating $id - ".time-($$cache{$id.'.time'}));      if (exists($$cache{$id.'.file'})) {
     &devalidate_cache($cache,$id,$name);   foreach my $filename (@{ $$cache{$id.'.file'} }) {
     return (undef,undef);      my $mtime=(stat($filename))[9];
       #+1 is to take care of edge effects
       if ($mtime && (($mtime+1) < ($$cache{$id.'.time'}))) {
   # &logthis("Upping $mtime - ".$$cache{$id.'.time'}.
   # "$id because of $filename");
       } else {
    &logthis("Devalidating $filename $id - ".(time-($$cache{$id.'.time'})));
    &devalidate_cache($cache,$id,$name);
    return (undef,undef);
       }
    }
    $$cache{$id.'.time'}=time;
       } else {
   # &logthis("Devalidating $id - ".time-($$cache{$id.'.time'}));
    &devalidate_cache($cache,$id,$name);
    return (undef,undef);
       }
  }   }
     }      }
     return ($$cache{$id},1);      return ($$cache{$id},1);
Line 910  sub save_cache { Line 959  sub save_cache {
  eval <<'EVALBLOCK';   eval <<'EVALBLOCK';
  $hash{$id.'.time'}=$$cache{$id.'.time'};   $hash{$id.'.time'}=$$cache{$id.'.time'};
  $hash{$id}=freeze({'item'=>$$cache{$id}});   $hash{$id}=freeze({'item'=>$$cache{$id}});
    if (exists($$cache{$id.'.file'})) {
       $hash{$id.'.file'}=freeze({'item'=>$$cache{$id.'.file'}});
    }
 EVALBLOCK  EVALBLOCK
                 if ($@) {                  if ($@) {
     &logthis("<font color='red'>save_cache blew up :$@:$name</font>");      &logthis("<font color='red'>save_cache blew up :$@:$name</font>");
Line 960  sub load_cache_item { Line 1012  sub load_cache_item {
     } else {      } else {
  if (($$cache{$id.'.time'}+$time) < time) {   if (($$cache{$id.'.time'}+$time) < time) {
     $$cache{$id.'.time'}=$hash{$id.'.time'};      $$cache{$id.'.time'}=$hash{$id.'.time'};
     my $hashref=thaw($hash{$id});      {
     $$cache{$id}=$hashref->{'item'};   my $hashref=thaw($hash{$id});
    $$cache{$id}=$hashref->{'item'};
       }
       if (exists($hash{$id.'.file'})) {
    my $hashref=thaw($hash{$id.'.file'});
    $$cache{$id.'.file'}=$hashref->{'item'};
       }
  }   }
     }      }
 EVALBLOCK  EVALBLOCK
Line 982  EVALBLOCK Line 1040  EVALBLOCK
 #    &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));  #    &logthis("load_cache_item $name took ".(&Time::HiRes::time()-$starttime));
 }  }
   
 sub usection {  
     my ($udom,$unam,$courseid)=@_;  
     my $hashid="$udom:$unam:$courseid";  
       
     my ($result,$cached)=&is_cached(\%usectioncache,$hashid,'usection');  
     if (defined($cached)) { return $result; }  
     $courseid=~s/\_/\//g;  
     $courseid=~s/^(\w)/\/$1/;  
     foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',  
                         &homeserver($unam,$udom)))) {  
         my ($key,$value)=split(/\=/,$_);  
         $key=&unescape($key);  
         if ($key=~/^\Q$courseid\E(?:\/)*(\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 &do_cache(\%usectioncache,$hashid,$section,'usection');  
     }  
         }  
     }  
     return &do_cache(\%usectioncache,$hashid,'-1','usection');  
 }  
   
 # ------------------------------------- Read an entry from a user's environment  # ------------------------------------- Read an entry from a user's environment
   
 sub userenvironment {  sub userenvironment {
Line 2748  sub allowed { Line 2774  sub allowed {
     $uri=&deversion($uri);      $uri=&deversion($uri);
     my $orguri=$uri;      my $orguri=$uri;
     $uri=&declutter($uri);      $uri=&declutter($uri);
       
       
       
     if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }      if (defined($ENV{'allowed.'.$priv})) { return $ENV{'allowed.'.$priv}; }
 # Free bre access to adm and meta resources  # Free bre access to adm and meta resources
     if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|))       if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|)) 
Line 2756  sub allowed { Line 2784  sub allowed {
  return 'F';   return 'F';
     }      }
   
   # Free bre access to user's own portfolio contents
       my ($space,$domain,$name,$dir)=split('/',$uri);
       if (('uploaded' eq $space) && ($ENV{'user.name'} eq $name) && 
    ($ENV{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
           return 'F';
       }
   
 # Free bre to public access  # Free bre to public access
   
     if ($priv eq 'bre') {      if ($priv eq 'bre') {
Line 3157  sub log_query { Line 3192  sub log_query {
 sub fetch_enrollment_query {  sub fetch_enrollment_query {
     my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;      my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
     my $homeserver;      my $homeserver;
       my $maxtries = 1;
     if ($context eq 'automated') {      if ($context eq 'automated') {
         $homeserver = $perlvar{'lonHostID'};          $homeserver = $perlvar{'lonHostID'};
           $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
     } else {      } else {
         $homeserver = &homeserver($cnum,$dom);          $homeserver = &homeserver($cnum,$dom);
     }      }
Line 3176  sub fetch_enrollment_query { Line 3213  sub fetch_enrollment_query {
         return 'error: '.$queryid;          return 'error: '.$queryid;
     }      }
     my $reply = &get_query_reply($queryid);      my $reply = &get_query_reply($queryid);
       my $tries = 1;
       while (($reply=~/^timeout/) && ($tries < $maxtries)) {
           $reply = &get_query_reply($queryid);
           $tries ++;
       }
     if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {      if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
         &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum);          &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$ENV{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
     } else {      } else {
         my @responses = split/:/,$reply;          my @responses = split/:/,$reply;
         if ($homeserver eq $perlvar{'lonHostID'}) {          if ($homeserver eq $perlvar{'lonHostID'}) {
Line 4073  sub EXT { Line 4115  sub EXT {
  $section=$ENV{'request.course.sec'};   $section=$ENV{'request.course.sec'};
     } else {      } else {
  if (! defined($usection)) {   if (! defined($usection)) {
     $section=&usection($udom,$uname,$courseid);      $section=&getsection($udom,$uname,$courseid);
  } else {   } else {
     $section = $usection;      $section = $usection;
  }   }
Line 4262  sub metadata { Line 4304  sub metadata {
         unless ($filename=~/\.meta$/) { $filename.='.meta'; }          unless ($filename=~/\.meta$/) { $filename.='.meta'; }
  my $metastring;   my $metastring;
  if ($uri !~ m|^uploaded/|) {   if ($uri !~ m|^uploaded/|) {
     $metastring=&getfile(&filelocation('',&clutter($filename)));      my $file=&filelocation('',&clutter($filename));
       push(@{$metacache{$uri.'.file'}},$file);
       $metastring=&getfile($file);
  }   }
         my $parser=HTML::LCParser->new(\$metastring);          my $parser=HTML::LCParser->new(\$metastring);
         my $token;          my $token;
Line 5227  sub goodbye { Line 5271  sub goodbye {
    &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));     &logthis(sprintf("%-20s is %s",'%courseresdatacache',scalar(%courseresdatacache)));
 #1.1 only  #1.1 only
    &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));     &logthis(sprintf("%-20s is %s",'%userresdatacache',scalar(%userresdatacache)));
    &logthis(sprintf("%-20s is %s",'%usectioncache',scalar(%usectioncache)));     &logthis(sprintf("%-20s is %s",'%getsectioncache',scalar(%getsectioncache)));
    &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));     &logthis(sprintf("%-20s is %s",'%courseresversioncache',scalar(%courseresversioncache)));
    &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));     &logthis(sprintf("%-20s is %s",'%resversioncache',scalar(%resversioncache)));
    &flushcourselogs();     &flushcourselogs();
Line 5609  X<rolesinit()> Line 5653  X<rolesinit()>
 B<rolesinit($udom,$username,$authhost)>: get user privileges  B<rolesinit($udom,$username,$authhost)>: get user privileges
   
 =item *  =item *
 X<usection()>  X<getsection()>
 B<usection($udom,$uname,$cname)>: finds the section of student in the  B<getsection($udom,$uname,$cname)>: finds the section of student in the
 course $cname, return section name/number or '' for "not in course"  course $cname, return section name/number or '' for "not in course"
 and '-1' for "no section"  and '-1' for "no section"
   
Removed from v.1.542  
changed lines
  Added in v.1.551

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