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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.692 and 1.720

version 1.692, 2006/01/10 16:06:07 version 1.720, 2006/03/08 21:47:15
Line 124  sub logperm { Line 124  sub logperm {
 # -------------------------------------------------- Non-critical communication  # -------------------------------------------------- Non-critical communication
 sub subreply {  sub subreply {
     my ($cmd,$server)=@_;      my ($cmd,$server)=@_;
     my $peerfile="$perlvar{'lonSockDir'}/$server";      my $peerfile="$perlvar{'lonSockDir'}/".$hostname{$server};
     #      #
     #  With loncnew process trimming, there's a timing hole between lonc server      #  With loncnew process trimming, there's a timing hole between lonc server
     #  process exit and the master server picking up the listen on the AF_UNIX      #  process exit and the master server picking up the listen on the AF_UNIX
Line 152  sub subreply { Line 152  sub subreply {
     }      }
     my $answer;      my $answer;
     if ($client) {      if ($client) {
  print $client "$cmd\n";   print $client "sethost:$server:$cmd\n";
  $answer=<$client>;   $answer=<$client>;
  if (!$answer) { $answer="con_lost"; }   if (!$answer) { $answer="con_lost"; }
  chomp($answer);   chomp($answer);
Line 260  sub critical { Line 260  sub critical {
   
 sub transfer_profile_to_env {  sub transfer_profile_to_env {
     my ($lonidsdir,$handle)=@_;      my ($lonidsdir,$handle)=@_;
       if (!defined($lonidsdir)) {
    $lonidsdir = $perlvar{'lonIDsDir'};
       }
       if (!defined($handle)) {
           ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
       }
   
     my @profile;      my @profile;
     {      {
  open(my $idf,"$lonidsdir/$handle.id");   open(my $idf,"$lonidsdir/$handle.id");
Line 947  sub userenvironment { Line 954  sub userenvironment {
 sub studentphoto {  sub studentphoto {
     my ($udom,$unam,$ext) = @_;      my ($udom,$unam,$ext) = @_;
     my $home=&Apache::lonnet::homeserver($unam,$udom);      my $home=&Apache::lonnet::homeserver($unam,$udom);
     my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext",$home);      if (defined($env{'request.course.id'})) {
     my $url="/uploaded/$udom/$unam/internal/studentphoto.".$ext;          if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
     if ($ret ne 'ok') {              if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
  return '/adm/lonKaputt/lonlogo_broken.gif';                  return(&retrievestudentphoto($udom,$unam,$ext)); 
               } else {
                   my ($result,$perm_reqd)=
       &Apache::lonnet::auto_photo_permission($unam,$udom);
                   if ($result eq 'ok') {
                       if (!($perm_reqd eq 'yes')) {
                           return(&retrievestudentphoto($udom,$unam,$ext));
                       }
                   }
               }
           }
       } else {
           my ($result,$perm_reqd) = 
       &Apache::lonnet::auto_photo_permission($unam,$udom);
           if ($result eq 'ok') {
               if (!($perm_reqd eq 'yes')) {
                   return(&retrievestudentphoto($udom,$unam,$ext));
               }
           }
       }
       return '/adm/lonKaputt/lonlogo_broken.gif';
   }
   
   sub retrievestudentphoto {
       my ($udom,$unam,$ext,$type) = @_;
       my $home=&Apache::lonnet::homeserver($unam,$udom);
       my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
       if ($ret eq 'ok') {
           my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
           if ($type eq 'thumbnail') {
               $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext"; 
           }
           my $tokenurl=&Apache::lonnet::tokenwrapper($url);
           return $tokenurl;
       } else {
           if ($type eq 'thumbnail') {
               return '/adm/lonKaputt/genericstudent_tn.gif';
           } else { 
               return '/adm/lonKaputt/lonlogo_broken.gif';
           }
     }      }
     my $tokenurl=&Apache::lonnet::tokenwrapper($url);  
     return $tokenurl;  
 }  }
   
 # -------------------------------------------------------------------- New chat  # -------------------------------------------------------------------- New chat
Line 1108  sub ssi { Line 1152  sub ssi {
     my $ua=new LWP::UserAgent;      my $ua=new LWP::UserAgent;
           
     my $request;      my $request;
       
       $form{'no_update_last_known'}=1;
   
     if (%form) {      if (%form) {
       $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);        $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
       $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));        $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
Line 1281  sub clean_filename { Line 1327  sub clean_filename {
   
 # --------------- Take an uploaded file and put it into the userfiles directory  # --------------- Take an uploaded file and put it into the userfiles directory
 # input: $formname - the contents of the file are in $env{"form.$formname"}  # input: $formname - the contents of the file are in $env{"form.$formname"}
 #                    the desired filenam is in $env{"form.$formname"}  #                    the desired filenam is in $env{"form.$formname.filename"}
 #        $coursedoc - if true up to the current course  #        $coursedoc - if true up to the current course
 #                     if false  #                     if false
 #        $subdir - directory in userfile to store the file into  #        $subdir - directory in userfile to store the file into
Line 1292  sub clean_filename { Line 1338  sub clean_filename {
   
   
 sub userfileupload {  sub userfileupload {
     my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase)=@_;      my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,$destudom)=@_;
     if (!defined($subdir)) { $subdir='unknown'; }      if (!defined($subdir)) { $subdir='unknown'; }
     my $fname=$env{'form.'.$formname.'.filename'};      my $fname=$env{'form.'.$formname.'.filename'};
     $fname=&clean_filename($fname);      $fname=&clean_filename($fname);
Line 1315  sub userfileupload { Line 1361  sub userfileupload {
         close($fh);          close($fh);
         return $fullpath.'/'.$fname;           return $fullpath.'/'.$fname; 
     }      }
       
 # Create the directory if not present  # Create the directory if not present
     $fname="$subdir/$fname";      $fname="$subdir/$fname";
     if ($coursedoc) {      if ($coursedoc) {
Line 1330  sub userfileupload { Line 1377  sub userfileupload {
        $fname,$formname,$parser,         $fname,$formname,$parser,
        $allfiles,$codebase);         $allfiles,$codebase);
         }          }
       } elsif (defined($destuname)) {
           my $docuname=$destuname;
           my $docudom=$destudom;
    return &finishuserfileupload($docuname,$docudom,$formname,
        $fname,$parser,$allfiles,$codebase);
           
     } else {      } else {
         my $docuname=$env{'user.name'};          my $docuname=$env{'user.name'};
         my $docudom=$env{'user.domain'};          my $docudom=$env{'user.domain'};
           if (exists($env{'form.group'})) {
               $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
               $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
           }
  return &finishuserfileupload($docuname,$docudom,$formname,   return &finishuserfileupload($docuname,$docudom,$formname,
      $fname,$parser,$allfiles,$codebase);       $fname,$parser,$allfiles,$codebase);
     }      }
Line 1358  sub finishuserfileupload { Line 1415  sub finishuserfileupload {
     }      }
 # Save the file  # Save the file
     {      {
  open(FH,'>'.$filepath.'/'.$file);   if (!open(FH,'>'.$filepath.'/'.$file)) {
  print FH $env{'form.'.$formname};      &logthis('Failed to create '.$filepath.'/'.$file);
       print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
       return '/adm/notfound.html';
    }
    if (!print FH ($env{'form.'.$formname})) {
       &logthis('Failed to write to '.$filepath.'/'.$file);
       print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
       return '/adm/notfound.html';
    }
  close(FH);   close(FH);
     }      }
     if ($parser eq 'parse') {      if ($parser eq 'parse') {
Line 2785  sub del { Line 2850  sub del {
 # -------------------------------------------------------------- dump interface  # -------------------------------------------------------------- dump interface
   
 sub dump {  sub dump {
    my ($namespace,$udomain,$uname,$regexp)=@_;     my ($namespace,$udomain,$uname,$regexp,$range)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }     if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }     if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);     my $uhome=&homeserver($uname,$udomain);
Line 2794  sub dump { Line 2859  sub dump {
    } else {     } else {
        $regexp='.';         $regexp='.';
    }     }
    my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);     my $rep=reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
    my @pairs=split(/\&/,$rep);     my @pairs=split(/\&/,$rep);
    my %returnhash=();     my %returnhash=();
    foreach (@pairs) {     foreach (@pairs) {
       my ($key,$value)=split(/=/,$_);        my ($key,$value)=split(/=/,$_,2);
       $returnhash{unescape($key)}=&thaw_unescape($value);        $returnhash{unescape($key)}=&thaw_unescape($value);
    }     }
    return %returnhash;     return %returnhash;
 }  }
   
   # --------------------------------------------------------- dumpstore interface
   
   sub dumpstore {
      my ($namespace,$udomain,$uname,$regexp,$range)=@_;
      return &dump($namespace,$udomain,$uname,$regexp,$range);
   }
   
 # -------------------------------------------------------------- keys interface  # -------------------------------------------------------------- keys interface
   
 sub getkeys {  sub getkeys {
Line 2945  sub newput { Line 3017  sub newput {
 # ---------------------------------------------------------  putstore interface  # ---------------------------------------------------------  putstore interface
   
 sub putstore {  sub putstore {
    my ($namespace,$storehash,$udomain,$uname)=@_;     my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }     if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }     if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);     my $uhome=&homeserver($uname,$udomain);
    my $items='';     my $items='';
    my %allitems = ();     foreach my $key (keys(%$storehash)) {
    foreach (keys %$storehash) {         $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
        if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {  
            my $key = $1.':keys:'.$2;  
            $allitems{$key} .= $3.':';  
        }  
        $items.=$_.'='.&freeze_escape($$storehash{$_}).'&';  
    }  
    foreach (keys %allitems) {  
        $allitems{$_} =~ s/\:$//;  
        $items.= $_.'='.$allitems{$_}.'&';  
    }     }
    $items=~s/\&$//;     $items=~s/\&$//;
    return &reply("put:$udomain:$uname:$namespace:$items",$uhome);     my $esc_symb=&escape($symb);
      my $esc_v=&escape($version);
      my $reply =
          &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
         $uhome);
      if ($reply eq 'unknown_cmd') {
          # gfall back to way things use to be done
          return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
       $uname);
      }
      return $reply;
   }
   
   sub old_putstore {
       my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
       if (!$udomain) { $udomain=$env{'user.domain'}; }
       if (!$uname) { $uname=$env{'user.name'}; }
       my $uhome=&homeserver($uname,$udomain);
       my %newstorehash;
       foreach (keys %$storehash) {
    my $key = $version.':'.&escape($symb).':'.$_;
    $newstorehash{$key} = $storehash->{$_};
       }
       my $items='';
       my %allitems = ();
       foreach (keys %newstorehash) {
    if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
       my $key = $1.':keys:'.$2;
       $allitems{$key} .= $3.':';
    }
    $items.=$_.'='.&freeze_escape($newstorehash{$_}).'&';
       }
       foreach (keys %allitems) {
    $allitems{$_} =~ s/\:$//;
    $items.= $_.'='.$allitems{$_}.'&';
       }
       $items=~s/\&$//;
       return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
 }  }
   
 # ------------------------------------------------------ critical put interface  # ------------------------------------------------------ critical put interface
Line 2975  sub cput { Line 3075  sub cput {
    my $uhome=&homeserver($uname,$udomain);     my $uhome=&homeserver($uname,$udomain);
    my $items='';     my $items='';
    foreach (keys %$storehash) {     foreach (keys %$storehash) {
        $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';         $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
    }     }
    $items=~s/\&$//;     $items=~s/\&$//;
    return &critical("put:$udomain:$uname:$namespace:$items",$uhome);     return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
Line 3073  sub customaccess { Line 3173  sub customaccess {
   
 sub allowed {  sub allowed {
     my ($priv,$uri,$symb)=@_;      my ($priv,$uri,$symb)=@_;
       my $ver_orguri=$uri;
     $uri=&deversion($uri);      $uri=&deversion($uri);
     my $orguri=$uri;      my $orguri=$uri;
     $uri=&declutter($uri);      $uri=&declutter($uri);
Line 3085  sub allowed { Line 3186  sub allowed {
     }      }
   
 # Free bre access to user's own portfolio contents  # Free bre access to user's own portfolio contents
     my ($space,$domain,$name,$dir)=split('/',$uri);      my ($space,$domain,$name,@dir)=split('/',$uri);
     if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&       if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) && 
  ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {   ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
         return 'F';          return 'F';
     }      }
   
   # bre access to group if user has rgf priv for this group and course.
       if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups') 
            && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
           if (exists($env{'request.course.id'})) {
               my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
               my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
               if (($domain eq $cdom) && ($name eq $cnum)) {
                   my $courseprivid=$env{'request.course.id'};
                   $courseprivid=~s/\_/\//;
                   if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
                       .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
                       return $1; 
                   }
               }
           }
       }
   
 # Free bre to public access  # Free bre to public access
   
     if ($priv eq 'bre') {      if ($priv eq 'bre') {
Line 3173  sub allowed { Line 3291  sub allowed {
                 $thisallowed.=$1;                  $thisallowed.=$1;
             }              }
         } else {          } else {
             my $refuri=$env{'httpref.'.$orguri};              my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
             if ($refuri) {              if ($refuri) {
                 if ($refuri =~ m|^/adm/|) {                  if ($refuri =~ m|^/adm/|) {
                     $thisallowed='F';                      $thisallowed='F';
Line 3404  sub allowed { Line 3522  sub allowed {
    return 'F';     return 'F';
 }  }
   
   sub split_uri_for_cond {
       my $uri=&deversion(&declutter(shift));
       my @uriparts=split(/\//,$uri);
       my $filename=pop(@uriparts);
       my $pathname=join('/',@uriparts);
       return ($pathname,$filename);
   }
 # --------------------------------------------------- Is a resource on the map?  # --------------------------------------------------- Is a resource on the map?
   
 sub is_on_map {  sub is_on_map {
     my $uri=&deversion(&declutter(shift));      my ($pathname,$filename) = &split_uri_for_cond(shift);
     my @uriparts=split(/\//,$uri);  
     my $filename=$uriparts[$#uriparts];  
     my $pathname=$uri;  
     $pathname=~s|/\Q$filename\E$||;  
     $pathname=~s/^adm\/wrapper\///;      
     #Trying to find the conditional for the file      #Trying to find the conditional for the file
     my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~      my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
        /\&\Q$filename\E\:([\d\|]+)\&/);         /\&\Q$filename\E\:([\d\|]+)\&/);
Line 3685  sub auto_create_password { Line 3805  sub auto_create_password {
     return ($authparam,$create_passwd,$authchk);      return ($authparam,$create_passwd,$authchk);
 }  }
   
   sub auto_photo_permission {
       my ($cnum,$cdom,$students) = @_;
       my $homeserver = &homeserver($cnum,$cdom);
       my ($outcome,$perm_reqd,$conditions) = 
    split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
       if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
    return (undef,undef);
       }
       return ($outcome,$perm_reqd,$conditions);
   }
   
   sub auto_checkphotos {
       my ($uname,$udom,$pid) = @_;
       my $homeserver = &homeserver($uname,$udom);
       my ($result,$resulttype);
       my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
      &escape($uname).':'.&escape($pid),
      $homeserver));
       if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
    return (undef,undef);
       }
       if ($outcome) {
           ($result,$resulttype) = split(/:/,$outcome);
       } 
       return ($result,$resulttype);
   }
   
   sub auto_photochoice {
       my ($cnum,$cdom) = @_;
       my $homeserver = &homeserver($cnum,$cdom);
       my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
          &escape($cdom),
          $homeserver)));
       if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
    return (undef,undef);
       }
       return ($update,$comment);
   }
   
   sub auto_photoupdate {
       my ($affiliatesref,$dom,$cnum,$photo) = @_;
       my $homeserver = &homeserver($cnum,$dom);
       my $host=$hostname{$homeserver};
       my $cmd = '';
       my $maxtries = 1;
       foreach (keys %{$affiliatesref}) {
           $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
       }
       $cmd =~ s/%%$//;
       $cmd = &escape($cmd);
       my $query = 'institutionalphotos';
       my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
       unless ($queryid=~/^\Q$host\E\_/) {
           &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
           return 'error: '.$queryid;
       }
       my $reply = &get_query_reply($queryid);
       my $tries = 1;
       while (($reply=~/^timeout/) && ($tries < $maxtries)) {
           $reply = &get_query_reply($queryid);
           $tries ++;
       }
       if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
           &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
       } else {
           my @responses = split(/:/,$reply);
           my $outcome = shift(@responses); 
           foreach my $item (@responses) {
               my ($key,$value) = split(/=/,$item);
               $$photo{$key} = $value;
           }
           return $outcome;
       }
       return 'error';
   }
   
 sub auto_instcode_format {  sub auto_instcode_format {
     my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;      my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
     my $courses = '';      my $courses = '';
Line 4541  sub GetFileTimestamp { Line 4737  sub GetFileTimestamp {
     }      }
 }  }
   
   sub stat_file {
       my ($uri) = @_;
       $uri = &clutter($uri);
       my ($udom,$uname,$file,$dir);
       if ($uri =~ m-^/(uploaded|editupload)/-) {
    ($udom,$uname,$file) =
       ($uri =~ m-/(?:uploaded|editupload)/?([^/]*)/?([^/]*)/?(.*)-);
    $file = 'userfiles/'.$file;
    $dir = &Apache::loncommon::propath($udom,$uname);
       }
       if ($uri =~ m-^/res/-) {
    ($udom,$uname) = 
       ($uri =~ m-/(?:res)/?([^/]*)/?([^/]*)/-);
    $file = $uri;
       }
   
       if (!$udom || !$uname || !$file) {
    # unable to handle the uri
    return ();
       }
   
       my ($result) = &dirlist($file,$udom,$uname,$dir);
       my @stats = split('&', $result);
       if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
    shift(@stats); #filename is first
    return @stats;
       }
       return ();
   }
   
 # -------------------------------------------------------- Value of a Condition  # -------------------------------------------------------- Value of a Condition
   
   # gets the value of a specific preevaluated condition
   #    stored in the string  $env{user.state.<cid>}
   # or looks up a condition reference in the bighash and if if hasn't
   # already been evaluated recurses into docondval to get the value of
   # the condition, then memoizing it to 
   #   $env{user.state.<cid>.<condition>}
 sub directcondval {  sub directcondval {
     my $number=shift;      my $number=shift;
     if (!defined($env{'user.state.'.$env{'request.course.id'}})) {      if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
  &Apache::lonuserstate::evalstate();   &Apache::lonuserstate::evalstate();
     }      }
       if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
    return $env{'user.state.'.$env{'request.course.id'}.".$number"};
       } elsif ($number =~ /^_/) {
    my $sub_condition;
    if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
    &GDBM_READER(),0640)) {
       $sub_condition=$bighash{'conditions'.$number};
       untie(%bighash);
    }
    my $value = &docondval($sub_condition);
    &appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
    return $value;
       }
     if ($env{'user.state.'.$env{'request.course.id'}}) {      if ($env{'user.state.'.$env{'request.course.id'}}) {
        return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);         return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
     } else {      } else {
Line 4555  sub directcondval { Line 4800  sub directcondval {
     }      }
 }  }
   
   # get the collection of conditions for this resource
 sub condval {  sub condval {
     my $condidx=shift;      my $condidx=shift;
     my $result=0;  
     my $allpathcond='';      my $allpathcond='';
     foreach (split(/\|/,$condidx)) {      foreach my $cond (split(/\|/,$condidx)) {
        if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$_})) {   if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
    $allpathcond.=      $allpathcond.=
                '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$_}.')|';   '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
        }   }
     }      }
     $allpathcond=~s/\|$//;      $allpathcond=~s/\|$//;
     if ($env{'request.course.id'}) {      return &docondval($allpathcond);
        if ($allpathcond) {  }
           my $operand='|';  
   my @stack;  #evaluates an expression of conditions
            foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {  sub docondval {
               if ($_ eq '(') {      my ($allpathcond) = @_;
                  push @stack,($operand,$result)      my $result=0;
               } elsif ($_ eq ')') {      if ($env{'request.course.id'}
                   my $before=pop @stack;   && defined($allpathcond)) {
   if (pop @stack eq '&') {   my $operand='|';
       $result=$result>$before?$before:$result;   my @stack;
                   } else {   foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
                       $result=$result>$before?$result:$before;      if ($chunk eq '(') {
                   }   push @stack,($operand,$result);
               } elsif (($_ eq '&') || ($_ eq '|')) {      } elsif ($chunk eq ')') {
                   $operand=$_;   my $before=pop @stack;
               } else {   if (pop @stack eq '&') {
                   my $new=directcondval($_);      $result=$result>$before?$before:$result;
                   if ($operand eq '&') {   } else {
                      $result=$result>$new?$new:$result;      $result=$result>$before?$result:$before;
                   } else {   }
                      $result=$result>$new?$result:$new;      } elsif (($chunk eq '&') || ($chunk eq '|')) {
                   }   $operand=$chunk;
               }      } else {
           }   my $new=directcondval($chunk);
        }   if ($operand eq '&') {
       $result=$result>$new?$new:$result;
    } else {
       $result=$result>$new?$result:$new;
    }
       }
    }
     }      }
     return $result;      return $result;
 }  }
Line 4708  sub EXT_cache_set { Line 4959  sub EXT_cache_set {
   
 # --------------------------------------------------------- Value of a Variable  # --------------------------------------------------------- Value of a Variable
 sub EXT {  sub EXT {
     my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;  
   
       my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
     unless ($varname) { return ''; }      unless ($varname) { return ''; }
     #get real user name/domain, courseid and symb      #get real user name/domain, courseid and symb
     my $courseid;      my $courseid;
Line 4823  sub EXT { Line 5074  sub EXT {
         return $env{'course.'.$courseid.'.'.$spacequalifierrest};          return $env{'course.'.$courseid.'.'.$spacequalifierrest};
     } elsif ($realm eq 'resource') {      } elsif ($realm eq 'resource') {
   
  my $section;  
         my @groups = ();  
  if (defined($courseid) && $courseid eq $env{'request.course.id'}) {   if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
     if (!$symbparm) { $symbparm=&symbread(); }      if (!$symbparm) { $symbparm=&symbread(); }
  }   }
   
    if ($space eq 'title') {
       if (!$symbparm) { $symbparm = $env{'request.filename'}; }
       return &gettitle($symbparm);
    }
   
    if ($space eq 'map') {
       my ($map) = &decode_symb($symbparm);
       return &symbread($map);
    }
   
    my ($section, $group, @groups);
  my ($courselevelm,$courselevel);   my ($courselevelm,$courselevel);
  if ($symbparm && defined($courseid) &&    if ($symbparm && defined($courseid) && 
     $courseid eq $env{'request.course.id'}) {      $courseid eq $env{'request.course.id'}) {
Line 4954  sub EXT { Line 5215  sub EXT {
  if ($space eq 'time') {   if ($space eq 'time') {
     return time;      return time;
         }          }
       } elsif ($realm eq 'server') {
   # ----------------------------------------------------------------- system.time
    if ($space eq 'name') {
       return $ENV{'SERVER_NAME'};
           }
     }      }
     return '';      return '';
 }  }
Line 4977  sub check_group_parms { Line 5243  sub check_group_parms {
   
 sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().  sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
     my ($grouplist,$courseid) = @_;      my ($grouplist,$courseid) = @_;
     my @groups = split/:/,$grouplist;      my @groups = sort(split(/:/,$grouplist));
     if (@groups > 1) {  
         @groups = sort(@groups);  
     }  
     return @groups;      return @groups;
 }  }
   
Line 5211  sub metadata { Line 5474  sub metadata {
  $metaentry{':keys'}=join(',',keys %metathesekeys);   $metaentry{':keys'}=join(',',keys %metathesekeys);
  &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);   &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
  $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);   $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
  &do_cache_new('meta',$uri,\%metaentry,60*60*24);   &do_cache_new('meta',$uri,\%metaentry,60*60);
 # this is the end of "was not already recently cached  # this is the end of "was not already recently cached
     }      }
     return $metaentry{':'.$what};      return $metaentry{':'.$what};
Line 5307  sub get_slot { Line 5570  sub get_slot {
  $cdom=$env{'course.'.$courseid.'.domain'};   $cdom=$env{'course.'.$courseid.'.domain'};
  $cnum=$env{'course.'.$courseid.'.num'};   $cnum=$env{'course.'.$courseid.'.num'};
     }      }
     my %slotinfo=&get('slots',[$which],$cdom,$cnum);      my $key=join("\0",'slots',$cdom,$cnum,$which);
     &Apache::lonhomework::showhash(%slotinfo);      my %slotinfo;
     my ($tmp)=keys(%slotinfo);      if (exists($remembered{$key})) {
     if ($tmp=~/^error:/) { return (); }   $slotinfo{$which} = $remembered{$key};
       } else {
    %slotinfo=&get('slots',[$which],$cdom,$cnum);
    &Apache::lonhomework::showhash(%slotinfo);
    my ($tmp)=keys(%slotinfo);
    if ($tmp=~/^error:/) { return (); }
    $remembered{$key} = $slotinfo{$which};
       }
     if (ref($slotinfo{$which}) eq 'HASH') {      if (ref($slotinfo{$which}) eq 'HASH') {
  return %{$slotinfo{$which}};   return %{$slotinfo{$which}};
     }      }
Line 5325  sub symblist { Line 5595  sub symblist {
     if (($env{'request.course.fn'}) && (%newhash)) {      if (($env{'request.course.fn'}) && (%newhash)) {
         if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',          if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                       &GDBM_WRCREAT(),0640)) {                        &GDBM_WRCREAT(),0640)) {
     foreach (keys %newhash) {      foreach my $url (keys %newhash) {
                 $hash{declutter($_)}=&encode_symb($mapname,$newhash{$_}->[1],   next if ($url eq 'last_known'
   $newhash{$_}->[0]);   && $env{'form.no_update_last_known'});
    $hash{declutter($url)}=&encode_symb($mapname,
       $newhash{$url}->[1],
       $newhash{$url}->[0]);
             }              }
             if (untie(%hash)) {              if (untie(%hash)) {
  return 'ok';   return 'ok';
Line 5344  sub symbverify { Line 5617  sub symbverify {
     my $thisfn=$thisurl;      my $thisfn=$thisurl;
 # wrapper not part of symbs  # wrapper not part of symbs
     $thisfn=~s/^\/adm\/wrapper//;      $thisfn=~s/^\/adm\/wrapper//;
       $thisfn=~s/^\/adm\/coursedocs\/showdoc\///;
     $thisfn=&declutter($thisfn);      $thisfn=&declutter($thisfn);
 # direct jump to resource in page or to a sequence - will construct own symbs  # direct jump to resource in page or to a sequence - will construct own symbs
     if ($thisfn=~/\.(page|sequence)$/) { return 1; }      if ($thisfn=~/\.(page|sequence)$/) { return 1; }
Line 5398  sub symbclean { Line 5672  sub symbclean {
 # remove wrapper  # remove wrapper
   
     $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;      $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
       $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
     return $symb;      return $symb;
 }  }
   
Line 6048  sub filelocation { Line 6323  sub filelocation {
     my ($dir,$file) = @_;      my ($dir,$file) = @_;
     my $location;      my $location;
     $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces      $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
   
       if ($file =~ m-^/adm/-) {
    $file=~s-^/adm/wrapper/-/-;
    $file=~s-^/adm/coursedocs/showdoc/-/-;
       }
     if ($file=~m:^/~:) { # is a contruction space reference      if ($file=~m:^/~:) { # is a contruction space reference
         $location = $file;          $location = $file;
         $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;          $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
Line 6087  sub hreflocation { Line 6367  sub hreflocation {
     my ($dir,$file)=@_;      my ($dir,$file)=@_;
     unless (($file=~m-^http://-i) || ($file=~m-^/-)) {      unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
  $file=filelocation($dir,$file);   $file=filelocation($dir,$file);
       } elsif ($file=~m-^/adm/-) {
    $file=~s-^/adm/wrapper/-/-;
    $file=~s-^/adm/coursedocs/showdoc/-/-;
     }      }
     if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {      if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
  $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;   $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
Line 6130  sub declutter { Line 6413  sub declutter {
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }      if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
     $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;      $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
     $thisfn=~s/^\///;      $thisfn=~s/^\///;
       $thisfn=~s|^adm/wrapper/||;
       $thisfn=~s|^adm/coursedocs/showdoc/||;
     $thisfn=~s/^res\///;      $thisfn=~s/^res\///;
     $thisfn=~s/\?.+$//;      $thisfn=~s/\?.+$//;
     return $thisfn;      return $thisfn;
Line 6142  sub clutter { Line 6427  sub clutter {
     unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) {       unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) { 
        $thisfn='/res'.$thisfn;          $thisfn='/res'.$thisfn; 
     }      }
       if ($thisfn !~m|/adm|) {
    if ($thisfn =~ m|/ext/|) {
       $thisfn='/adm/wrapper'.$thisfn;
    } else {
       my ($ext) = ($thisfn =~ /\.(\w+)$/);
       my $embstyle=&Apache::loncommon::fileembstyle($ext);
       if ($embstyle eq 'ssi'
    || ($embstyle eq 'hdn')
    || ($embstyle eq 'rat')
    || ($embstyle eq 'prv')
    || ($embstyle eq 'ign')) {
    #do nothing with these
       } elsif (($embstyle eq 'img') 
    || ($embstyle eq 'emb')
    || ($embstyle eq 'wrp')) {
    $thisfn='/adm/wrapper'.$thisfn;
       } elsif ($embstyle eq 'unk'
        && $thisfn!~/\.(sequence|page)$/) {
    $thisfn='/adm/coursedocs/showdoc'.$thisfn;
       } else {
   # &logthis("Got a blank emb style");
       }
    }
       }
     return $thisfn;      return $thisfn;
 }  }
   
Line 6959  all args are optional Line 7268  all args are optional
   
 =item *  =item *
   
   dumpstore($namespace,$udom,$uname,$regexp,$range) : 
   dumps the complete (or key matching regexp) namespace into a hash
   ($udom, $uname, $regexp, $range are optional) for a namespace that is
   normally &store()ed into
   
   $range should be either an integer '100' (give me the first 100
                                              matching records)
                 or be  two integers sperated by a - with no spaces
                    '30-50' (give me the 30th through the 50th matching
                             records)
   
   
   =item *
   
   putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
   replaces a &store() version of data with a replacement set of data
   for a particular resource in a namespace passed in the $storehash hash 
   reference
   
   =item *
   
 tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that  tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
 works very similar to store/cstore, but all data is stored in a  works very similar to store/cstore, but all data is stored in a
 temporary location and can be reset using tmpreset, $storehash should  temporary location and can be reset using tmpreset, $storehash should
Line 6988  namesp ($udom and $uname are optional) Line 7318  namesp ($udom and $uname are optional)
   
 =item *  =item *
   
 dump($namespace,$udom,$uname,$regexp) :   dump($namespace,$udom,$uname,$regexp,$range) : 
 dumps the complete (or key matching regexp) namespace into a hash  dumps the complete (or key matching regexp) namespace into a hash
 ($udom, $uname and $regexp are optional)  ($udom, $uname, $regexp, $range are optional)
   
   $range should be either an integer '100' (give me the first 100
                                              matching records)
                 or be  two integers sperated by a - with no spaces
                    '30-50' (give me the 30th through the 50th matching
                             records)
 =item *  =item *
   
 inc($namespace,$store,$udom,$uname) : increments $store in $namespace.  inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
Line 7007  put($namespace,$storehash,$udom,$uname) Line 7342  put($namespace,$storehash,$udom,$uname)
   
 =item *  =item *
   
 putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp  
 keys used in storehash include version information (e.g., 1:$symb:message etc.) as  
 used in records written by &store and retrieved by &restore.  This function   
 was created for use in editing discussion posts, without incrementing the  
 version number included in the key for a particular post. The colon   
 separated list of attribute names (e.g., the value associated with the key   
 1:keys:$symb) is also generated and passed in the ampersand separated   
 items sent to lonnet::reply().    
   
 =item *  
   
 cput($namespace,$storehash,$udom,$uname) : critical put  cput($namespace,$storehash,$udom,$uname) : critical put
 ($udom and $uname are optional)  ($udom and $uname are optional)
   
Line 7147  getfile($file,$caller) : two cases - req Line 7471  getfile($file,$caller) : two cases - req
    - returns the entire contents of a file or -1;      - returns the entire contents of a file or -1; 
    it properly subscribes to and replicates the file if neccessary.     it properly subscribes to and replicates the file if neccessary.
   
   
   =item *
   
   stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
                     reference
   
   returns either a stat() list of data about the file or an empty list
   if the file doesn't exist or couldn't find out about it (connection
   problems or user unknown)
   
 =item *  =item *
   
 filelocation($dir,$file) : returns file system location of a file  filelocation($dir,$file) : returns file system location of a file
Removed from v.1.692  
changed lines
  Added in v.1.720

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