# For details, see the HELM World-Wide-Web page,
# http://cs.unibo.it/helm/.
+my $VERSION = "@VERSION@";
+
# First of all, let's load HELM configuration
use Env;
my $HELM_LIB_DIR = $ENV{"HELM_LIB_DIR"};
$HELM_LIB_PATH = $DEFAULT_HELM_LIB_DIR."/configuration.pl";
}
-# Let's override the configuration file
-$styles_dir = $ENV{"HELM_STYLE_DIR"} if (defined ($ENV{"HELM_STYLE_DIR"}));
-$dtd_dir = $ENV{"HELM_DTD_DIR"} if (defined ($ENV{"HELM_DTD_DIR"}));
-
# <ZACK>: TODO temporary, move this setting to configuration file
# set the cache mode, may be "gzipped" or "normal"
my $cachemode = $ENV{'HTTP_GETTER_CACHE_MODE'} || 'gzipped';
# next require defines: $helm_dir, $html_link, $dtd_dir, $uris_dbm
require $HELM_LIB_PATH;
+# Let's override the configuration file
+$style_dir = $ENV{"HELM_STYLE_DIR"} if (defined ($ENV{"HELM_STYLE_DIR"}));
+$dtd_dir = $ENV{"HELM_DTD_DIR"} if (defined ($ENV{"HELM_DTD_DIR"}));
+
use HTTP::Daemon;
use HTTP::Status;
use HTTP::Request;
#CSC: altra roba da sistemare segnata con CSC
my $d = new HTTP::Daemon LocalPort => 8081;
+my $myownurl = $d->url;
+
+# Let's patch the returned URL
+$myownurl =~ s/\/$//; # chop the final slash
+my $myownport = $myownurl;
+$myownport =~ s/http:\/\/(.*):(.*)/$2/;
+$myownurl =~ s/http:\/\/(.*):(.*)/$1/;
+($myownurl) = gethostbyname($myownurl);
+$myownurl = "http://".$myownurl.":".$myownport;
+
tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
-print "Please contact me at: <URL:", $d->url, ">\n";
+print "Please contact me at: <URL:", $myownurl."/", ">\n";
print "helm_dir: $helm_dir\n";
+print "style_dir: $style_dir\n";
print "dtd_dir: $dtd_dir\n";
print "urls_of_uris.db: $uris_dbm.db\n";
print "cache mode: $cachemode\n";
print "Using local copy\n";
open(FD, $filename) or die "Cannot open $filename\n";
$cont = "";
- while(<FD>) { $cont .= $_; }
+ while(<FD>) {
+ # Vary bad heuristic for substituion of absolute URLs
+ # for relative ones
+ s/ENTITY (.*) SYSTEM\s+"/ENTITY $1 SYSTEM "$myownurl\/getdtd?uri=/g;
+ $cont .= $_;
+ }
close(FD);
answer($c,$cont);
} else {
die "Could not find DTD!";
}
- } elsif ($http_method eq 'GET' and $http_path eq "/getxslt") {
+ } elsif ($http_method eq 'GET' and $http_path eq "/getstyleconf") {
my $filename = $inputuri;
- $filename = $styles_dir."/".$filename;
+ $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,$cont);
+ } else {
+ die "Could not find Style Configuration File!";
+ }
+ } elsif ($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>) { $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);
} else {
$cont = "<?xml version=\"1.0\"?><html_link>$quoted_html_link</html_link>";
answer($c,$cont);
} elsif ($http_method eq 'GET' and $http_path eq "/update") {
- print "Update requested...";
- update();
- kill(USR1,getppid());
+ print "Update requested...\n";
+ mk_urls_of_uris();
+ kill(USR1,getppid()); # signal changes to parent
print " done\n";
answer($c,"<html><body><h1>Update done</h1></body></html>");
+ } elsif ($http_method eq 'GET' and $http_path eq "/version") {
+ print "Version requested!";
+ answer($c,"<html><body><h1>HTTP Getter Version ".$VERSION."</h1></body></html>");
} else {
print "\nINVALID REQUEST!!!!!\n";
$c->send_error(RC_FORBIDDEN)
$c->send_response($res);
}
+sub helm_wget {
+#ported from helm_wget executable, TODO: rewrite without wget.
+#retrieve a file from an url and write it to a temp dir
+#used for retrieve resource indexe from servers
+ my ($prefix, $URL) = @_;
+ if ($URL =~ /^file:\//) {
+ $URL =~ s/^file:\///;
+ my $command = "mkdir -p $prefix ; cp $URL $prefix";
+ print "$command\n";
+ system($command) == 0
+ or die "\"$command\" error";
+ } else {
+ my $command = "wget -c -P $prefix $URL";
+ system($command) == 0
+ or die "\"$command\" error";
+ }
+}
+
sub update {
untie %map;
tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
}
+
+sub mk_urls_of_uris {
+#rebuild $uris_dbm.db fetching resource indexes from servers
+ my (
+ $server, $idxfile, $uri, $url, $comp, $line,
+ @servers,
+ %urls_of_uris
+ );
+
+ untie %map;
+ if (stat $uris_dbm.".db") { # remove old db file
+ unlink($uris_dbm.".db") or
+ die "cannot unlink old db file: $uris_dbm.db\n";
+ }
+ tie(%urls_of_uris, 'DB_File', $uris_dbm.".db", O_RDWR|O_CREAT, 0664);
+
+ open (SRVS, "< $servers_file") or
+ die "cannot open servers file: $servers_file\n";
+ @servers = <SRVS>;
+ close (SRVS);
+ while ($server = pop @servers) { #cicle on servers in reverse order
+ print "processing server: $server ...\n";
+ chomp $server;
+ $debugserver = "http://dalamar.krynn.it/helm"; # FOR DEBUG ONLY: REMOVE ME !!
+ helm_wget($tmp_dir, $server."/".$indexname); #get index
+ $idxfile = $tmp_dir."/".$indexname;
+ open (INDEX, "< $idxfile") or
+ die "cannot open temporary index file: $idxfile\n";
+ while ($line = <INDEX>) { #parse index and add entry to urls_of_uris
+ chomp $line;
+ ($uri,$comp) = split /[ \t]+/, $line;
+ # build url:
+ if ($comp =~ /gz/) {
+ $url = $uri . ".xml" . ".gz";
+ } else {
+ $url = $uri . ".xml";
+ }
+ $url =~ s/cic:/$server/;
+ $url =~ s/theory:/$server/;
+ $urls_of_uris{$uri} = $url;
+ }
+ close INDEX;
+ die "cannot unlink temporary file: $idxfile\n"
+ if (unlink $idxfile) != 1;
+ }
+
+ untie(%urls_of_uris);
+ tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
+}
+
projects / helm.git / blobdiff