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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.406 and 1.423

version 1.406, 2003/08/26 04:56:30 version 1.423, 2003/09/25 20:02:54
Line 76  qw(%perlvar %hostname %homecache %badSer Line 76  qw(%perlvar %hostname %homecache %badSer
    %libserv %pr %prp %metacache %packagetab %titlecache      %libserv %pr %prp %metacache %packagetab %titlecache 
    %courselogs %accesshash %userrolehash $processmarker $dumpcount      %courselogs %accesshash %userrolehash $processmarker $dumpcount 
    %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseresdatacache      %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseresdatacache 
    %domaindescription %domain_auth_def %domain_auth_arg_def      %userresdatacache %usectioncache %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 85  use Apache::Constants qw(:common :http); Line 85  use Apache::Constants qw(:common :http);
 use HTML::LCParser;  use HTML::LCParser;
 use Fcntl qw(:flock);  use Fcntl qw(:flock);
 use Apache::loncoursedata;  use Apache::loncoursedata;
   use Apache::lonlocal;
   
 my $readit;  my $readit;
   
Line 246  sub critical { Line 247  sub critical {
     return $answer;      return $answer;
 }  }
   
   #
 # -------------- Remove all key from the env that start witha lowercase letter  # -------------- Remove all key from the env that start witha lowercase letter
 #                (Which is alweways a lon-capa value)  #                (Which is always a lon-capa value)
   
 sub cleanenv {  sub cleanenv {
   #    unless (defined(&Apache::exists_config_define("MODPERL2"))) { return; }
   #    unless (&Apache::exists_config_define("MODPERL2")) { return; }
     foreach my $key (keys(%ENV)) {      foreach my $key (keys(%ENV)) {
  if ($key =~ /^[a-z]/) {   if ($key =~ /^[a-z]/) {
     delete($ENV{$key});      delete($ENV{$key});
Line 436  sub spareserver { Line 441  sub spareserver {
     my $lowestserver=$loadpercent > $userloadpercent?      my $lowestserver=$loadpercent > $userloadpercent?
              $loadpercent :  $userloadpercent;               $loadpercent :  $userloadpercent;
     foreach $tryserver (keys %spareid) {      foreach $tryserver (keys %spareid) {
        my $loadans=reply('load',$tryserver);   my $loadans=reply('load',$tryserver);
        my $userloadans=reply('userload',$tryserver);   my $userloadans=reply('userload',$tryserver);
        if ($userloadans !~ /\d/) { $userloadans=0; }   if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
        my $answer=$loadans > $userloadans?      next; #didn't get a number from the server
                   $loadans :  $userloadans;   }
        if (($answer =~ /\d/) && ($answer<$lowestserver)) {   my $answer;
    $spareserver="http://$hostname{$tryserver}";   if ($loadans =~ /\d/) {
            $lowestserver=$answer;      if ($userloadans =~ /\d/) {
        }   #both are numbers, pick the bigger one
    $answer=$loadans > $userloadans?
       $loadans :  $userloadans;
       } else {
    $answer = $loadans;
       }
    } else {
       $answer = $userloadans;
    }
    if (($answer =~ /\d/) && ($answer<$lowestserver)) {
       $spareserver="http://$hostname{$tryserver}";
       $lowestserver=$answer;
    }
     }      }
     return $spareserver;      return $spareserver;
 }  }
Line 831  sub getsection { Line 848  sub getsection {
     return '-1';      return '-1';
 }  }
   
   sub devalidate_cache {
       my ($cache,$id) = @_;
       delete $$cache{$id.'.time'};
       delete $$cache{$id};
   }
   
   sub is_cached {
       my ($cache,$id,$time) = @_;
       if (!$time) { $time=300; }
       if (!exists($$cache{$id.'.time'})) {
    return (undef,undef);
       } else {
    if (time-$$cache{$id.'.time'}>$time) {
       &devalidate_cache($cache,$id);
       return (undef,undef);
    }
       }
       return ($$cache{$id},1);
   }
   
   sub do_cache {
       my ($cache,$id,$value) = @_;
       $$cache{$id.'.time'}=time;
       # do_cache implictly return the set value
       $$cache{$id}=$value;
   }
   
 sub usection {  sub usection {
     my ($udom,$unam,$courseid)=@_;      my ($udom,$unam,$courseid)=@_;
       my $hashid="$udom:$unam:$courseid";
       
       my ($result,$cached)=&is_cached(\%usectioncache,$hashid);
       if (defined($cached)) { return $result; }
     $courseid=~s/\_/\//g;      $courseid=~s/\_/\//g;
     $courseid=~s/^(\w)/\/$1/;      $courseid=~s/^(\w)/\/$1/;
     foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',      foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
Line 851  sub usection { Line 899  sub usection {
             if ($end) {              if ($end) {
                 if ($now>$end) { $notactive=1; }                  if ($now>$end) { $notactive=1; }
             }               } 
             unless ($notactive) { return $section; }              unless ($notactive) {
    return &do_cache(\%usectioncache,$hashid,$section);
       }
         }          }
     }      }
     return '-1';      return &do_cache(\%usectioncache,$hashid,'-1');
 }  }
   
 # ------------------------------------- Read an entry from a user's environment  # ------------------------------------- Read an entry from a user's environment
Line 1228  sub courseacclog { Line 1278  sub courseacclog {
     my $fnsymb=shift;      my $fnsymb=shift;
     unless ($ENV{'request.course.id'}) { return ''; }      unless ($ENV{'request.course.id'}) { return ''; }
     my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};      my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
     if ($fnsymb=~/(problem|exam|quiz|assess|survey|form)$/) {      if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|page)$/) {
         $what.=':POST';          $what.=':POST';
  foreach (keys %ENV) {   foreach (keys %ENV) {
             if ($_=~/^form\.(.*)/) {              if ($_=~/^form\.(.*)/) {
Line 2136  sub dump { Line 2186  sub dump {
    return %returnhash;     return %returnhash;
 }  }
   
   # -------------------------------------------------------------- keys interface
   
   sub getkeys {
      my ($namespace,$udomain,$uname)=@_;
      if (!$udomain) { $udomain=$ENV{'user.domain'}; }
      if (!$uname) { $uname=$ENV{'user.name'}; }
      my $uhome=&homeserver($uname,$udomain);
      my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
      my @keyarray=();
      foreach (split(/\&/,$rep)) {
         push (@keyarray,&unescape($_));
      }
      return @keyarray;
   }
   
 # --------------------------------------------------------------- currentdump  # --------------------------------------------------------------- currentdump
 sub currentdump {  sub currentdump {
    my ($courseid,$sdom,$sname)=@_;     my ($courseid,$sdom,$sname)=@_;
Line 2575  sub is_on_map { Line 2640  sub is_on_map {
     if ($match) {      if ($match) {
  return (1,$1);   return (1,$1);
     } else {      } else {
  return (0,0);   my ($name,$ext)=($filename=~/^(.+)\.(\w+)$/);
           $ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
          /\&(\Q$name\E\.\d+\.$ext)\:([\d\|]+)\&/;
    return (0,$2,$pathname.'/'.$1);
     }      }
 }  }
   
Line 2705  sub userlog_query { Line 2773  sub userlog_query {
   
 sub plaintext {  sub plaintext {
     my $short=shift;      my $short=shift;
     return $prp{$short};      return &mt($prp{$short});
 }  }
   
 # ----------------------------------------------------------------- Assign Role  # ----------------------------------------------------------------- Assign Role
Line 3150  sub dirlist { Line 3218  sub dirlist {
 # when it was last modified.  It will also return an error of -1  # when it was last modified.  It will also return an error of -1
 # if an error occurs  # if an error occurs
   
   ##
   ## FIXME: This subroutine assumes its caller knows something about the
   ## directory structure of the home server for the student ($root).
   ## Not a good assumption to make.  Since this is for looking up files
   ## in user directories, the full path should be constructed by lond, not
   ## whatever machine we request data from.
   ##
 sub GetFileTimestamp {  sub GetFileTimestamp {
     my ($studentDomain,$studentName,$filename,$root)=@_;      my ($studentDomain,$studentName,$filename,$root)=@_;
     $studentDomain=~s/\W//g;      $studentDomain=~s/\W//g;
Line 3226  sub condval { Line 3301  sub condval {
 sub devalidatecourseresdata {  sub devalidatecourseresdata {
     my ($coursenum,$coursedomain)=@_;      my ($coursenum,$coursedomain)=@_;
     my $hashid=$coursenum.':'.$coursedomain;      my $hashid=$coursenum.':'.$coursedomain;
     delete $courseresdatacache{$hashid.'.time'};      &devalidate_cache(\%courseresdatacache,$hashid);
 }  }
   
 # --------------------------------------------------- Course Resourcedata Query  # --------------------------------------------------- Course Resourcedata Query
Line 3235  sub courseresdata { Line 3310  sub courseresdata {
     my ($coursenum,$coursedomain,@which)=@_;      my ($coursenum,$coursedomain,@which)=@_;
     my $coursehom=&homeserver($coursenum,$coursedomain);      my $coursehom=&homeserver($coursenum,$coursedomain);
     my $hashid=$coursenum.':'.$coursedomain;      my $hashid=$coursenum.':'.$coursedomain;
     my $dodump=0;      my ($result,$cached)=&is_cached(\%courseresdatacache,$hashid);
     if (!defined($courseresdatacache{$hashid.'.time'})) {      unless (defined($cached)) {
  $dodump=1;  
     } else {  
  if (time-$courseresdatacache{$hashid.'.time'}>300) { $dodump=1; }  
     }  
     if ($dodump) {  
  my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);   my %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
    $result=\%dumpreply;
  my ($tmp) = keys(%dumpreply);   my ($tmp) = keys(%dumpreply);
  if ($tmp !~ /^(con_lost|error|no_such_host)/i) {   if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
     $courseresdatacache{$hashid.'.time'}=time;      &do_cache(\%courseresdatacache,$hashid,$result);
     $courseresdatacache{$hashid}=\%dumpreply;  
  } elsif ($tmp =~ /^(con_lost|no_such_host)/) {   } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
     return $tmp;      return $tmp;
    } elsif ($tmp =~ /^(error)/) {
       $result=undef;
       &do_cache(\%courseresdatacache,$hashid,$result);
  }   }
     }      }
     foreach my $item (@which) {      foreach my $item (@which) {
  if (defined($courseresdatacache{$hashid}->{$item})) {   if (defined($result->{$item})) {
     return $courseresdatacache{$hashid}->{$item};      return $result->{$item};
  }   }
     }      }
     return undef;      return undef;
Line 3395  sub EXT { Line 3468  sub EXT {
 # ----------------------------------------------------- Cascading lookup scheme  # ----------------------------------------------------- Cascading lookup scheme
     if (!$symbparm) { $symbparm=&symbread(); }      if (!$symbparm) { $symbparm=&symbread(); }
     my $symbp=$symbparm;      my $symbp=$symbparm;
     my $mapp=(split(/\_\_\_/,$symbp))[0];      my $mapp=(&decode_symb($symbp))[0];
   
     my $symbparm=$symbp.'.'.$spacequalifierrest;      my $symbparm=$symbp.'.'.$spacequalifierrest;
     my $mapparm=$mapp.'___(all).'.$spacequalifierrest;      my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
Line 3421  sub EXT { Line 3494  sub EXT {
   
 # ----------------------------------------------------------- first, check user  # ----------------------------------------------------------- first, check user
     #most student don\'t have any data set, check if there is some data      #most student don\'t have any data set, check if there is some data
             #every thirty minutes  
     if (! &EXT_cache_status($udom,$uname)) {      if (! &EXT_cache_status($udom,$uname)) {
  my %resourcedata=&get('resourcedata',   my $hashid="$udom:$uname";
       [$courselevelr,$courselevelm,$courselevel],   my ($result,$cached)=&is_cached(\%userresdatacache,$hashid);
       $udom,$uname);   if (!defined($cached)) { 
  my ($tmp)=keys(%resourcedata);      my %resourcedata=&get('resourcedata',
     [$courselevelr,$courselevelm,
      $courselevel],$udom,$uname);
       $result=\%resourcedata;
    }
    my ($tmp)=keys(%$result);
  if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {   if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
     if ($resourcedata{$courselevelr}) {      &do_cache(\%userresdatacache,$hashid,$result);
  return $resourcedata{$courselevelr}; }      if ($$result{$courselevelr}) {
     if ($resourcedata{$courselevelm}) {   return $$result{$courselevelr}; }
  return $resourcedata{$courselevelm}; }      if ($$result{$courselevelm}) {
     if ($resourcedata{$courselevel}) {   return $$result{$courselevelm}; }
  return $resourcedata{$courselevel}; }      if ($$result{$courselevel}) {
    return $$result{$courselevel}; }
  } else {   } else {
     if ($tmp!~/No such file/) {      if ($tmp!~/No such file/) {
  &logthis("<font color=blue>WARNING:".   &logthis("<font color=blue>WARNING:".
  " Trying to get resource data for ".   " Trying to get resource data for ".
  $uname." at ".$udom.": ".   $uname." at ".$udom.": ".
  $tmp."</font>");   $tmp."</font>");
    &do_cache(\%userresdatacache,$hashid,undef);
     } elsif ($tmp=~/error:No such file/) {      } elsif ($tmp=~/error:No such file/) {
                         &EXT_cache_set($udom,$uname);                          &EXT_cache_set($udom,$uname);
     } elsif ($tmp =~ /^(con_lost|no_such_host)/) {      } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
    &do_cache(\%userresdatacache,$hashid,undef);
  return $tmp;   return $tmp;
     }      }
  }   }
Line 3474  sub EXT { Line 3554  sub EXT {
  my $filename;   my $filename;
  if (!$symbparm) { $symbparm=&symbread(); }   if (!$symbparm) { $symbparm=&symbread(); }
  if ($symbparm) {   if ($symbparm) {
     $filename=(split(/\_\_\_/,$symbparm))[2];      $filename=(&decode_symb($symbparm))[2];
  } else {   } else {
     $filename=$ENV{'request.filename'};      $filename=$ENV{'request.filename'};
  }   }
Line 3549  sub add_prefix_and_part { Line 3629  sub add_prefix_and_part {
   
 sub metadata {  sub metadata {
     my ($uri,$what,$liburi,$prefix,$depthcount)=@_;      my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
   
     $uri=&declutter($uri);      $uri=&declutter($uri);
     # if it is a non metadata possible uri return quickly      # if it is a non metadata possible uri return quickly
     if (($uri eq '') || (($uri =~ m|^/*adm/|) && ($uri !~ m|^adm/includes|)) ||      if (($uri eq '') || (($uri =~ m|^/*adm/|) && ($uri !~ m|^adm/includes|)) ||
         ($uri =~ m|/$|) || ($uri =~ m|/.meta$|)) {          ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
    ($uri =~ m|home/[^/]+/public_html/|)) {
  return '';   return '';
     }      }
     my $filename=$uri;      my $filename=$uri;
Line 3742  sub gettitle { Line 3822  sub gettitle {
  unless ($urlsymb) { $urlsymb=$ENV{'request.filename'}; }   unless ($urlsymb) { $urlsymb=$ENV{'request.filename'}; }
         return &metadata($urlsymb,'title');           return &metadata($urlsymb,'title'); 
     }      }
     if ($titlecache{$symb}) {      my ($result,$cached)=&is_cached(\%titlecache,$symb,600);
  if (time < ($titlecache{$symb}[1] + 600)) {      if (defined($cached)) { return $result; }
     return $titlecache{$symb}[0];      my ($map,$resid,$url)=&decode_symb($symb);
  } else {  
     delete($titlecache{$symb});  
  }  
     }  
     my ($map,$resid,$url)=split(/\_\_\_/,$symb);  
     my $title='';      my $title='';
     my %bighash;      my %bighash;
     if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',      if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
Line 3760  sub gettitle { Line 3835  sub gettitle {
     }      }
     $title=~s/\&colon\;/\:/gs;      $title=~s/\&colon\;/\:/gs;
     if ($title) {      if ($title) {
         $titlecache{$symb}=[$title,time];          return &do_cache(\%titlecache,$symb,$title);
         return $title;  
     } else {      } else {
  return &metadata($urlsymb,'title');   return &metadata($urlsymb,'title');
     }      }
Line 3795  sub symbverify { Line 3869  sub symbverify {
 # direct jump to resource in page or to a sequence - will construct own symbs  # direct jump to resource in page or to a sequence - will construct own symbs
     if ($thisfn=~/\.(page|sequence)$/) { return 1; }      if ($thisfn=~/\.(page|sequence)$/) { return 1; }
 # check URL part  # check URL part
     my ($map,$resid,$url)=split(/\_\_\_/,$symb);      my ($map,$resid,$url)=&decode_symb($symb);
     unless (&symbclean($url) eq &symbclean($thisfn)) { return 0; }      unless (&symbclean($url) eq &symbclean($thisfn)) { return 0; }
   
     $symb=&symbclean($symb);      $symb=&symbclean($symb);
Line 3838  sub symbclean { Line 3912  sub symbclean {
     return $symb;      return $symb;
 }  }
   
   # ---------------------------------------------- Split symb to find map and url
   
   sub decode_symb {
       my ($map,$resid,$url)=split(/\_\_\_/,shift);
       return (&fixversion($map),$resid,&fixversion($url));
   }
   
   sub fixversion {
       my $fn=shift;
       if ($fn=~/^(adm|uploaded|public)/) { return $fn; }
       my ($match,$cond,$versioned)=&is_on_map($fn);
       unless ($match) {
    $fn=$versioned;
       }
       return $fn;
   }
   
 # ------------------------------------------------------ Return symb list entry  # ------------------------------------------------------ Return symb list entry
   
 sub symbread {  sub symbread {
Line 4137  sub unescape { Line 4228  sub unescape {
     return $str;      return $str;
 }  }
   
   sub mod_perl_version {
       if (defined($perlvar{'MODPERL2'})) {
    return 2;
       }
       return 1;
   }
 # ================================================================ Main Program  # ================================================================ Main Program
   
 sub goodbye {  sub goodbye {
Removed from v.1.406  
changed lines
  Added in v.1.423

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