X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fhttp_getter%2Fhttp_getter.pl.in;h=f3484d68845d38099360016ebb4e29aec508b74b;hb=fe80ede918357f2f3c27133d27319bf026d71163;hp=e1546733e4c71aaa452e0a172d110a9bc0b1c377;hpb=1b19b60c84b1becb403f09c17c99997afe5f81d9;p=helm.git

diff --git a/helm/http_getter/http_getter.pl.in b/helm/http_getter/http_getter.pl.in
index e1546733e..f3484d688 100755
--- a/helm/http_getter/http_getter.pl.in
+++ b/helm/http_getter/http_getter.pl.in
@@ -30,7 +30,7 @@ my $VERSION = "@VERSION@";
 # various variables
 my ($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;
@@ -54,12 +54,20 @@ if (($cachemode ne 'gzipped') and ($cachemode ne 'normal')) {
  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
@@ -73,13 +81,15 @@ use LWP::UserAgent;
 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
@@ -90,22 +100,26 @@ $myownurl  =~ s/http:\/\/(.*):(.*)/$1/;
 ($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
@@ -197,7 +211,7 @@ while (my $c = $d->accept) {
         } elsif ($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;
@@ -209,13 +223,13 @@ while (my $c = $d->accept) {
           unlink ($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";
@@ -228,45 +242,9 @@ while (my $c = $d->accept) {
 
         } elsif ($http_method eq 'GET' and $http_path eq "/getdtd") {
 
-#             my $filename = $inputuri;
-#             $filename = $dtd_dir."/".$filename;
-#             print "DTD: $inputuri ==> ($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/ENTITY (.*) SYSTEM\s+"/ENTITY $1 SYSTEM "$myownurl\/getdtd?uri=/g;
-# 	        $cont .= $_;
-# 	       }
-#                close(FD);
-#                answer($c,$cont,"text/xml","");
-#             } else {
-#                die "Could not find DTD!";
-#             }
-
-        } elsif ($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";
+            $filename = $dtd_dir."/".$filename;
+            print "DTD: $inputuri ==> ($filename)\n";
             if (stat($filename)) {
                print "Using local copy\n";
                open(FD, $filename) or die "Cannot open $filename\n";
@@ -274,16 +252,58 @@ while (my $c = $d->accept) {
                while(<FD>) {
                 # Vary bad heuristic for substituion of absolute URLs
                 # for relative ones
-                s/xsl:import\s+href="/xsl:import href="$myownurl\/getxslt?uri=/g ;
-                s/xsl:include\s+href="/xsl:include href="$myownurl\/getxslt?uri=/g ;
-                $cont .= $_;
-               }
+		s/ENTITY (.*) SYSTEM\s+"/ENTITY $1 SYSTEM "$myownurl\/getdtd?uri=/g;
+	        $cont .= $_;
+	       }
                close(FD);
                answer($c,$cont,"text/xml","");
             } else {
-               die "Could not find XSLT!";
+               die "Could not find DTD!";
             }
 
+        } elsif ($http_method eq 'GET' and $http_path eq "/getxslt") {
+
+          $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 $http_path eq "/update") {
             # rebuild urls_of_uris db and rdf uris db
@@ -418,8 +438,8 @@ sub resolve { # resolve an uri in a url, work both with standard cic: or theory:
   return ($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});
  }
 }
 
@@ -436,7 +456,7 @@ sub finduris { # find uris for cic and theory trees generation
  
  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
@@ -573,12 +593,6 @@ sub print_request
  print "</download_request>\n";
 }
 
-sub callback
-{
- my ($data) = @_;
- $cont .= $data;
-}
-
 sub gunzip { # gunzip a file and return the deflated content
 	my ($filename) = @_;
 
@@ -738,9 +752,14 @@ sub html_nice_answer {
  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;
@@ -755,30 +774,34 @@ sub helm_wget {
 
 sub update {
 # retie dbs
- untie %map;
- tie(%map, 'DB_File', $uris_dbm.".db", O_RDWR, 0664);
+ 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";
@@ -790,12 +813,15 @@ sub update_dbs {
   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:
@@ -809,9 +835,10 @@ sub update_dbs {
    $urls_of_uris{$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:
@@ -825,19 +852,34 @@ sub update_dbs {
    $rdf{$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!