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filtering resource directories to only look at directories
belonging to a given home user -Scott

    1: #!/usr/bin/perl
    2: # The LearningOnline Network
    3: # searchcat.pl "Search Catalog" batch script
    4: 
    5: # 04/14/2001 Scott Harrison
    6: 
    7: # This script goes through a LON-CAPA resource
    8: # directory and gathers metadata.
    9: # The metadata is entered into a SQL database.
   10: 
   11: use strict;
   12: 
   13: use IO::File;
   14: use HTML::TokeParser;
   15: 
   16: my @metalist;
   17: # ----------------- Code to enable 'find' subroutine listing of the .meta files
   18: require "find.pl";
   19: sub wanted {
   20:     (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
   21:     -f _ &&
   22:     /^.*\.meta$/ &&
   23:     push(@metalist,"$dir/$_");
   24: }
   25: 
   26: # ------------------------------------ Read httpd access.conf and get variables
   27: open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
   28: 
   29: while ($configline=<CONFIG>) {
   30:     if ($configline =~ /PerlSetVar/) {
   31: 	my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
   32:         chomp($varvalue);
   33:         $perlvar{$varname}=$varvalue;
   34:     }
   35: }
   36: close(CONFIG);
   37: 
   38: # ------------------------------------- Make sure that database can be accessed
   39: {
   40:     my $dbh;
   41:     unless (
   42: 	    $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
   43: 	    ) { 
   44: 	print "Cannot connect to database!\n";
   45: 	exit;
   46:     }
   47: }
   48: 
   49: # ------------------------------------------------------------- get .meta files
   50: opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
   51: my @homeusers=grep
   52:           {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
   53:           grep {!/^\.\.?$/} readdir(RESOURCES);
   54: closedir RESOURCES;
   55: foreach my $user (@homeusers) {
   56:     &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
   57: }
   58: 
   59: # -- process each file to get metadata and put into search catalog SQL database
   60: foreach my $m (@metalist) {
   61:     my $ref=&metadata($m);
   62:     my $sth=$dbh->prepare('insert into metadata values ('.
   63: 			  delete($ref->{'title'}),
   64: 			  delete($ref->{'author'}).','.
   65: 			  delete($ref->{'subject'}).','.
   66: 			  delete($ref->{'url'}).','.
   67: 			  delete($ref->{'keywords'}).','.
   68: 			  delete($ref->{'version'}).','.
   69: 			  delete($ref->{'notes'}).','.
   70: 			  delete($ref->{'abstract'}).','.
   71: 			  delete($ref->{'mime'}).','.
   72: 			  delete($ref->{'language'}).','.
   73: 			  delete($ref->{'creationdate'}).','.
   74: 			  delete($ref->{'lastrevisiondate'}).','.
   75: 			  delete($ref->{'owner'}).','.
   76: 			  delete($ref->{'copyright'}).
   77: 			  ')';
   78:     $sth->execute();
   79: }
   80: 
   81: # ----------------------------------------------------------- Clean up database
   82: # Need to, perhaps, remove stale SQL database records.
   83: # ... not yet implemented
   84: 
   85: # --------------------------------------------------- Close database connection
   86: $dbh->disconnect;
   87: 
   88: # ---------------------------------------------------------------- Get metadata
   89: # significantly altered from subroutine present in lonnet
   90: sub metadata {
   91:     my ($uri,$what)=@_;
   92:     my %metacache;
   93:     $uri=&declutter($uri);
   94:     my $filename=$uri;
   95:     $uri=~s/\.meta$//;
   96:     $uri='';
   97:     unless ($metacache{$uri.'keys'}) {
   98:         unless ($filename=~/\.meta$/) { $filename.='.meta'; }
   99: 	my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
  100:         my $parser=HTML::TokeParser->new(\$metastring);
  101:         my $token;
  102:         while ($token=$parser->get_token) {
  103:            if ($token->[0] eq 'S') {
  104: 	      my $entry=$token->[1];
  105:               my $unikey=$entry;
  106:               if (defined($token->[2]->{'part'})) { 
  107:                  $unikey.='_'.$token->[2]->{'part'}; 
  108: 	      }
  109:               if (defined($token->[2]->{'name'})) { 
  110:                  $unikey.='_'.$token->[2]->{'name'}; 
  111: 	      }
  112:               if ($metacache{$uri.'keys'}) {
  113:                  $metacache{$uri.'keys'}.=','.$unikey;
  114:               } else {
  115:                  $metacache{$uri.'keys'}=$unikey;
  116: 	      }
  117:               map {
  118: 		  $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
  119:               } @{$token->[3]};
  120:               unless (
  121:                  $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)
  122: 		      ) { $metacache{$uri.''.$unikey}=
  123: 			      $metacache{$uri.''.$unikey.'.default'};
  124: 		      }
  125:           }
  126:        }
  127:     }
  128:     return \%metacache;
  129: }
  130: 
  131: # ------------------------------------------------------------ Serves up a file
  132: # returns either the contents of the file or a -1
  133: sub getfile {
  134:   my $file=shift;
  135:   if (! -e $file ) { return -1; };
  136:   my $fh=IO::File->new($file);
  137:   my $a='';
  138:   while (<$fh>) { $a .=$_; }
  139:   return $a
  140: }
  141: 
  142: # ------------------------------------------------------------- Declutters URLs
  143: sub declutter {
  144:     my $thisfn=shift;
  145:     $thisfn=~s/^$perlvar{'lonDocRoot'}//;
  146:     $thisfn=~s/^\///;
  147:     $thisfn=~s/^res\///;
  148:     return $thisfn;
  149: }
  150: 
  151: # --------------------------------------- Is this the home server of an author?
  152: # (copied from lond, modification of the return value)
  153: sub ishome {
  154:     my $author=shift;
  155:     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
  156:     my ($udom,$uname)=split(/\//,$author);
  157:     my $proname=propath($udom,$uname);
  158:     if (-e $proname) {
  159: 	return 1;
  160:     } else {
  161:         return 0;
  162:     }
  163: }
  164: 
  165: # -------------------------------------------- Return path to profile directory
  166: # (copied from lond)
  167: sub propath {
  168:     my ($udom,$uname)=@_;
  169:     $udom=~s/\W//g;
  170:     $uname=~s/\W//g;
  171:     my $subdir=$uname.'__';
  172:     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
  173:     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
  174:     return $proname;
  175: }