# various variables
my ($HELM_LIB_PATH);
my $cgi_dir = "@HELM_CGI_DIR@";
-my (%map, %rdf_map);
+my (%xml_map, %rdf_map, %xslt_map);
# First of all, let's load HELM configuration
use Env;
die "Invalid HTTP_GETTER_CACHE_MODE environment variable, must be".
"'normal' or 'gzipped'\n";
}
+
my $helm_rdf_dir = $ENV{'HTTP_GETTER_RDF_DIR'} ||
- "/usr/local/helm/rdf_library";
+ "/usr/local/helm/rdf_library";
my $rdf_dbm = $ENV{'HTTP_GETTER_RDF_DBM'} ||
- "/usr/local/helm/rdf_urls_of_uris";
+ "/usr/local/helm/rdf_urls_of_uris.db";
+my $xslt_dbm = $ENV{'HTTP_GETTER_XSLT_DBM'} ||
+ "/usr/local/helm/xslt_urls_of_uris.db";
my $rdf_indexname = $ENV{'HTTP_GETTER_RDF_INDEXNAME'} ||
- "rdf_index.txt";
+ "rdf_index.txt";
+my $xslt_indexname = $ENV{'HTTP_GETTER_XSLT_INDEXNAME'} ||
+ "xslt_index.txt";
+$servers_file = $ENV{'HTTP_GETTER_SERVERS_FILE'} || $servers_file;
+$uris_dbm = $ENV{'HTTP_GETTER_URIS_DBM'} || $uris_dbm;
+
# </move_to_conf_file>
# Let's override the configuration file
use DB_File;
use Compress::Zlib;
use CGI;
+use URI;
use URI::Escape;
#CSC: mancano i controlli sulle condizioni di errore di molte funzioni
#CSC: ==> non e' robusto
#CSC: altra roba da sistemare segnata con CSC
-my $d = new HTTP::Daemon LocalPort => 8081;
+my $d = new HTTP::Daemon LocalPort => 8081
+ or die "Error: port 8081 not available.";
my $myownurl = $d->url;
# Let's patch the returned URL
($myownurl) = gethostbyname($myownurl);
$myownurl = "http://".$myownurl.":".$myownport;
-tie(%map, 'DB_File', $uris_dbm.".db", O_RDWR, 0664); # open dbs
-tie(%rdf_map, 'DB_File', $rdf_dbm.".db", O_RDWR, 0664);
+tie(%xml_map, 'DB_File', $uris_dbm, O_RDWR, 0664); # open dbs
+tie(%rdf_map, 'DB_File', $rdf_dbm, O_RDWR, 0664);
+tie(%xslt_map, 'DB_File', $xslt_dbm, O_RDWR, 0664);
print "\n";
print "HTTP Getter $VERSION\n"; # print hello information
print "Please contact me at: <URL:", $myownurl."/", ">\n";
print "\n";
+print "servers_file: $servers_file\n";
print "helm_dir: $helm_dir\n";
print "helm_rdf_dir: $helm_rdf_dir\n";
print "style_dir: $style_dir\n";
print "dtd_dir: $dtd_dir\n";
-print "urls_of_uris db: $uris_dbm.db\n";
-print "rdf db: $rdf_dbm.db\n";
+print "urls_of_uris db: $uris_dbm\n";
+print "rdf db: $rdf_dbm\n";
+print "xslt db: $xslt_dbm\n";
print "cache mode: $cachemode\n";
print "indexname: $indexname\n";
print "rdf_indexname: $rdf_indexname\n";
+print "xslt_indexname: $xslt_indexname\n";
print "\n";
$SIG{CHLD} = "IGNORE"; # do not accumulate defunct processes
}
my $filename = $inputuri;
+ my $prefix;
if (not isRdfUri($inputuri)) { # standad cic: or theory: uri
$filename =~ s/^cic:(.*)/$1/;
$filename =~ s/^theory:(.*)/$1/;
} else { # rdf uri
+ # The "helm:rdf/<<...>>//cic:" prefix is kept, but quoted
+ # (so that a "helm:rdf/<<...>>//cic:" dir is created
+ $prefix = $filename;
$filename =~ s/^(.*)\/\/cic:(.*)/$2/;
$filename =~ s/^(.*)\/\/theory:(.*)/$2/;
+ $prefix =~ s/\Q$filename\E//;
+ $prefix =~ s/_/__/g;
+ $prefix =~ s/\//_/g;
+ $filename = $prefix.$filename;
}
my $url = resolve ($inputuri); # resolve uri in url
if (not isRdfUri ($inputuri)) { # save in uri std cache dir
$filename = $helm_dir.$filename.$extension;
} else { # save in rdf metadata cache dir
- $filename = $helm_rdf_dir.$filename.$extension;
+ $filename = $helm_rdf_dir."/".$filename.$extension;
}
print_request($inputuri,$url,$filename);
} elsif ($http_method eq 'GET' and $http_path eq "/register") {
my $inputurl = $cgi->param('url');
print "Register requested...\n";
- $map{$inputuri}=$inputurl;
+ $xml_map{$inputuri}=$inputurl;
# Now let's clean the cache
my $cicfilename = $inputuri;
unlink ($helm_dir.$cicfilename.".xml.gz");
kill(USR1,getppid()); # signal changes to parent
- untie %map;
+ untie %xml_map;
print "done.\n";
html_nice_answer($c,"Register done");
# "/resolve" works with rdf uri
} elsif ($http_method eq 'GET' and $http_path eq "/resolve") {
- #my $outputurl = $map{$inputuri};
+ #my $outputurl = $xml_map{$inputuri};
my $outputurl = resolve($inputuri);
$outputurl = "" if (not defined($outputurl));
$cont = "<?xml version=\"1.0\" ?>\n\n";
answer($c,$cont,"text/xml","");
} elsif ($http_method eq 'GET' and $http_path eq "/getdtd") {
+
my $filename = $inputuri;
$filename = $dtd_dir."/".$filename;
print "DTD: $inputuri ==> ($filename)\n";
die "Could not find DTD!";
}
- } elsif ($http_method eq 'GET' and $http_path eq "/getstyleconf") {
- my $filename = $inputuri;
- $filename = $style_dir."/config/".$filename;
- if (stat($filename)) {
- open(FD, $filename) or die "Cannot open $filename\n";
- $cont = "";
- while(<FD>) {
- s/DOCTYPE (.*) SYSTEM\s+"/DOCTYPE $1 SYSTEM "$myownurl\/getstyleconf?uri=/g;
- $cont .= $_;
- }
- close(FD);
- answer($c,$cont,"text/plain","");
- } else {
- die "Could not find Style Configuration File!";
- }
-
} elsif ($http_method eq 'GET' and $http_path eq "/getxslt") {
- my $filename = $inputuri;
- $filename = $style_dir."/".$filename;
- print "XSLT: $inputuri ==> ($filename)\n";
- if (stat($filename)) {
- print "Using local copy\n";
- open(FD, $filename) or die "Cannot open $filename\n";
- $cont = "";
- while(<FD>) {
- # Vary bad heuristic for substituion of absolute URLs
- # for relative ones
- s/xsl:import\s+href="/xsl:import href="$myownurl\/getxslt?uri=/g ;
- s/xsl:include\s+href="/xsl:include href="$myownurl\/getxslt?uri=/g ;
- $cont .= $_;
- }
- close(FD);
- answer($c,$cont,"text/xml","");
- } else {
- die "Could not find XSLT!";
- }
+
+ $url = $xslt_map{$inputuri};
+ print "Downloading XSLT ...\n";
+ helm_wget($tmp_dir, $url);
+ print "XSLT downloaded!\n";
+ $inputuri =~ s/.*\///;
+ my $filename = $tmp_dir . "/" . $inputuri;
+ my $cont;
+ die "Could not find XSLT!\n" unless stat($filename);
+ open(FD, $filename) or die "Can't open xslt local copy: '$filename'\n";
+ while(<FD>) {
+ s/xsl:import\s+href="/xsl:import href="$myownurl\/getxslt?uri=/g;
+ s/xsl:include\s+href="/xsl:include href="$myownurl\/getxslt?uri=/g;
+ $cont .= $_;
+ }
+ close(FD);
+ answer($c, $cont, "text/xml", "");
+ unlink $filename or
+ print "Can't unlink XSLT temp file '$filename'";
+
+# <old_version>
+# my $filename = $inputuri;
+# $filename = $style_dir."/".$filename;
+# print "XSLT: $inputuri ==> ($filename)\n";
+# if (stat($filename)) {
+# print "Using local copy\n";
+# open(FD, $filename) or die "Cannot open $filename\n";
+# $cont = "";
+# while(<FD>) {
+# # Vary bad heuristic for substituion of absolute URLs
+# # for relative ones
+# s/xsl:import\s+href="/xsl:import href="$myownurl\/getxslt?uri=/g ;
+# s/xsl:include\s+href="/xsl:include href="$myownurl\/getxslt?uri=/g ;
+# $cont .= $_;
+# }
+# close(FD);
+# answer($c,$cont,"text/xml","");
+# } else {
+# die "Could not find XSLT!";
+# }
+# </old_version>
# "/update" works with rdf uri
} elsif ($http_method eq 'GET' and $http_path eq "/update") {
print " done\n";
html_nice_answer($c,"Update done");
- # "/ls" does not work with rdf uris
+ # "/getalluris" does not work with rdf uris
+ } elsif ($http_method eq 'GET' and $http_path eq "/getalluris") {
+ # send back all the keys in xml
+ print "BASEURI $baseuri, FORMAT $outype\n";
+ $cont = getalluris();
+ answer($c,$cont,"text/xml","");
+
} elsif ($http_method eq 'GET' and $http_path eq "/ls") {
# send back keys that begin with a given uri
my ($uritype,$uripattern,$uriprefix);
print "Help requested!\n";
html_nice_answer($c,"HTTP Getter Version: $VERSION");
+ } elsif ($http_method eq 'GET' and $http_path eq "/getempty") {
+ # return an empty, but valid, xml document
+ my $emptyxml = <<EOXML;
+<?xml version="1.0"?>
+<!DOCTYPE empty [
+ <!ELEMENT empty EMPTY>
+]>
+<empty />
+EOXML
+ answer($c, $emptyxml, "", "");
+
} elsif ($http_method eq 'GET' and $http_path =~ /\.cgi$/) {
# cgi handling
print "CGI requested!\n";
return ($rdf_map{$uri});
} else { # standard cic: or theory: uri, resolve using std uri db
print "IS NOT A RDF URI\n";
- print "I WILL RETURN '$map{$uri}'\n";
- return ($map{$uri});
+ print "I WILL RETURN '$xml_map{$uri}'\n";
+ return ($xml_map{$uri});
}
}
+sub getalluris { # get all the keys whose prefix is cic
+ my $content = "";
+ my ($uri);
+ my $debug=1; # for debug
+
+ $content .= '<?xml version="1.0" encoding="ISO-8859-1"?>' . "\n";
+ $content .= "<!DOCTYPE alluris SYSTEM ";
+ $content .= "\"$myownurl/getdtd?uri=alluris.dtd\">" . "\n\n";
+ $content .= "<alluris>\n";
+ foreach $uri (sort (keys(%xml_map))) { # select matching uris
+ if ($uri =~ /^cic:/ && not $uri =~ /.types$/) {
+ print "GETALLURI: $uri\n" if defined($debug);
+ $content .= "\t<uri value=\"$uri\"/>\n";
+ }
+ }
+ $content .= "</alluris>\n";
+ return $content;
+}
+
sub finduris { # find uris for cic and theory trees generation
my ($uritype,$uripattern,$format) = @_;
my $content = "";
if (($uritype eq "cic") or ($uritype eq "theory")) {
# get info only of one type: cic or theory
- foreach (keys(%map)) { # select matching uris
+ foreach (keys(%xml_map)) { # select matching uris
$uri = $_;
if ($uri =~ /^$uritype:$uripattern(\/|$|\.)/) {
if ($uri =~ /^$uritype:$uripattern\//) { # directory match
print "</download_request>\n";
}
-sub callback
-{
- my ($data) = @_;
- $cont .= $data;
-}
-
sub gunzip { # gunzip a file and return the deflated content
my ($filename) = @_;
answer($c,$content,"text/html","");
}
+sub callback {
+ my ($data) = @_;
+ $cont .= $data;
+}
+
sub helm_wget {
-#retrieve a file from an url and write it to a temp dir
-#used for retrieve resource index from servers
+# retrieve a file from an url and write it to a temp dir
+# used for retrieve resource index from servers
$cont = "";
my ($prefix, $URL) = @_;
my $ua = LWP::UserAgent->new;
}
sub update {
- untie %map;
- tie(%map, 'DB_File', $uris_dbm.".db", O_RDWR, 0664);
+# retie dbs
+ untie %xml_map;
+ tie(%xml_map, 'DB_File', $uris_dbm, O_RDWR, 0664);
untie %rdf_map;
- tie(%rdf_map, 'DB_File', $rdf_dbm.".db", O_RDWR, 0664);
+ tie(%rdf_map, 'DB_File', $rdf_dbm, O_RDWR, 0664);
+ untie %xslt_map;
+ tie(%xslt_map, 'DB_File', $xslt_dbm, O_RDWR, 0664);
}
sub update_dbs {
# rebuild dbs fetching resource indexes from servers.
-# Rebuild urls_of_uris db (1) and rdf db (2)
+# Rebuild urls_of_uris db (1), rdf db (2) and xslt db (3)
my (
$server, $idxfile, $rdf_idxfile, $uri, $url, $comp, $line,
@servers,
- %urls_of_uris, %rdf # local proxy of $map and $rdf_map
+ %urls_of_uris, %rdf, %xslt # local proxy of dbs
);
- untie %map;
+ untie %xml_map;
untie %rdf_map;
- foreach my $file ($uris_dbm, $rdf_dbm) { # remove old db file
- if (stat $file.".db") { # remove if exists
- unlink ($file.".db") or die "can't unlink old db file: $file.db\n";
+ untie %xslt_map;
+ foreach my $file ($uris_dbm, $rdf_dbm, $xslt_dbm) { # remove old db file
+ if (stat $file) { # remove if exists
+ unlink ($file) or die "can't unlink old db file: $file\n";
}
}
- tie(%urls_of_uris, 'DB_File', $uris_dbm.".db", O_RDWR|O_CREAT, 0664);
- tie(%rdf, 'DB_File', $rdf_dbm.".db", O_RDWR|O_CREAT, 0664);
+ tie(%urls_of_uris, 'DB_File', $uris_dbm, O_RDWR|O_CREAT, 0664);
+ tie(%rdf, 'DB_File', $rdf_dbm, O_RDWR|O_CREAT, 0664);
+ tie(%xslt, 'DB_File', $xslt_dbm, O_RDWR|O_CREAT, 0664);
open (SRVS, "< $servers_file") or
die "cannot open servers file: $servers_file\n";
chomp $server;
helm_wget($tmp_dir, $server."/".$indexname); # get index
helm_wget($tmp_dir, $server."/".$rdf_indexname); # get rdf index
+ helm_wget($tmp_dir, $server."/".$xslt_indexname); # get xslt index
$idxfile = $tmp_dir."/".$indexname;
$rdf_idxfile = $tmp_dir."/".$rdf_indexname;
+ $xslt_idxfile = $tmp_dir . "/" . $xslt_indexname;
- open (INDEX, "< $idxfile") or # (1) REBUILD URLS_OF_URIS DB
+ # (1) REBUILD URLS_OF_URIS DB
+ open (INDEX, "< $idxfile") or
die "cannot open temporary index file: $idxfile\n";
- while ($line = <INDEX>) { # parse index and add entry to urls_of_uris db
+ while (my $line = <INDEX>) { # parse index and add entry to urls_of_uris db
chomp $line;
($uri,$comp) = split /[ \t]+/, $line;
# build url:
$urls_of_uris{$uri} = $url;
}
- open (RDF_INDEX, "< $rdf_idxfile") or # (2) REBUILD RDF DB
- die "cannot open temporary rdf index file: $rdf_idxfile\n";
- while ($line = <RDF_INDEX>) { # parse index and add entry to rdf db
+ # (2) REBUILD RDF DB
+ open (RDF_INDEX, "< $rdf_idxfile") or
+ die "cannot open temporary RDF index file: $rdf_idxfile\n";
+ while (my $line = <RDF_INDEX>) { # parse index and add entry to rdf db
chomp $line;
($uri,$comp) = split /[ \t]+/, $line; # comp is "gz" or nothing
# build url:
$rdf{$uri} = $url;
}
+ # (3) REBUILD XSLT DB
+ open (XSLT_INDEX, "< $xslt_idxfile") or
+ die "cannot open temporary XSLT index file: $xslt_idxfile\n";
+ while (my $line = <XSLT_INDEX>) { # parse index and add entry to xslt db
+ chomp $line;
+ my $stylesheet = $line;
+ my $url = $server . "/" . $stylesheet;
+ $xslt{$stylesheet} = $url;
+ }
+
close INDEX; # close indexes
close RDF_INDEX;
- die "cannot unlink temporary file: $idxfile\n" # remove temp files
- if (unlink $idxfile) != 1;
- die "cannot unlink temporary file: $rdf_idxfile\n"
- if (unlink $rdf_idxfile) != 1;
+ close XSLT_INDEX;
+
+ # remove temp files
+ foreach my $file ($idxfile, $rdf_idxfile, $xslt_idxfile) {
+ print "cannot unlink temporary file: $file\n" if (unlink $file) != 1;
+ }
}
untie(%urls_of_uris); # untie local proxies
untie(%rdf);
- tie(%map, 'DB_File', $uris_dbm.".db", O_RDWR, 0664); # retie global ones
- tie(%rdf_map, 'DB_File', $rdf_dbm.".db", O_RDWR, 0664);
+ untie(%xslt);
+ tie(%xml_map, 'DB_File', $uris_dbm, O_RDWR, 0664); # retie global ones
+ tie(%rdf_map, 'DB_File', $rdf_dbm, O_RDWR, 0664);
+ tie(%xslt_map, 'DB_File', $xslt_dbm, O_RDWR, 0664);
+
} # update_dbs
+# vim modline: do not remove!
+# vim: set ft=perl:
+
projects / helm.git / blobdiff