X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fhttp_getter%2Fhttp_getter.pl.in;h=44001955c7570652434640874f17bc1fd6ddefec;hb=e1d232bab1b061d9098fd666ca24bed84b38f99e;hp=bac916fe85e1df7d657ab42b03c40e3e90b9623b;hpb=0f3bf3ba988cf1010c0c89df92ff36f0d34c877b;p=helm.git
diff --git a/helm/http_getter/http_getter.pl.in b/helm/http_getter/http_getter.pl.in
index bac916fe8..44001955c 100755
--- a/helm/http_getter/http_getter.pl.in
+++ b/helm/http_getter/http_getter.pl.in
@@ -1,34 +1,95 @@
#!@PERL_BINARY@
+# Copyright (C) 2000, HELM Team.
+#
+# This file is part of HELM, an Hypertextual, Electronic
+# Library of Mathematics, developed at the Computer Science
+# Department, University of Bologna, Italy.
+#
+# HELM is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# HELM is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with HELM; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# For details, see the HELM World-Wide-Web page,
+# http://cs.unibo.it/helm/.
+
+#use strict;
+
+my $VERSION = "@VERSION@";
+
+# various variables
+my ($HELM_LIB_PATH);
+my (%map);
+
# First of all, let's load HELM configuration
use Env;
-my $HELM_LIBRARY_DIR = $ENV{"HELM_LIBRARY_DIR"};
+my $HELM_LIB_DIR = $ENV{"HELM_LIB_DIR"};
# this should be the only fixed constant
-my $DEFAULT_HELM_LIBRARY_DIR = "@DEFAULT_HELM_LIBRARY_DIR@";
-if (defined ($HELM_LIBRARY_DIR)) {
- $HELM_LIBRARY_PATH = $HELM_LIBRARY_DIR."/configuration.pl";
+my $DEFAULT_HELM_LIB_DIR = "@HELM_LIB_DIR@";
+if (defined ($HELM_LIB_DIR)) {
+ $HELM_LIB_PATH = $HELM_LIB_DIR."/configuration.pl";
} else {
- $HELM_LIBRARY_PATH = $DEFAULT_HELM_LIBRARY_DIR."/configuration.pl";
+ $HELM_LIB_PATH = $DEFAULT_HELM_LIB_DIR."/configuration.pl";
}
+
+# : TODO temporary, move this setting to configuration file
+# set the cache mode, may be "gzipped" or "normal"
+my $cachemode = $ENV{'HTTP_GETTER_CACHE_MODE'} || 'gzipped';
+if (($cachemode ne 'gzipped') and ($cachemode ne 'normal')) {
+ die "Invalid HTTP_GETTER_CACHE_MODE environment variable, must be".
+ "'normal' or 'gzipped'\n";
+}
+#
+
# next require defines: $helm_dir, $html_link, $dtd_dir, $uris_dbm
-require $HELM_LIBRARY_PATH;
+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;
use LWP::UserAgent;
use DB_File;
+use Compress::Zlib;
+use CGI;
+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 $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, ">\n";
+print "Please contact me at: \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";
+
$SIG{CHLD} = "IGNORE"; # do not accumulate defunct processes
$SIG{USR1} = \&update; # sent by the child to make the parent update
while (my $c = $d->accept) {
@@ -36,22 +97,43 @@ while (my $c = $d->accept) {
while (my $r = $c->get_request) {
#CSC: mancano i controlli di sicurezza
- my $inputuri = $r->url;
- $inputuri =~ s/^[^?]*\?uri=(.*)/$1/;
- print "\nRequest: ".$r->url."\n\n";
my $http_method = $r->method;
my $http_path = $r->url->path;
+ my $http_query = uri_unescape($r->url->query);
+ my $cgi = new CGI("$http_query");
+ my $inputuri = $cgi->param('uri');
+ print "\nRequest: ".$r->url."\n\n";
+
+ print "\nUnescaped query: ".$http_query."\n";
if ($http_method eq 'GET' and $http_path eq "/getciconly") {
# finds the uri, url and filename
my $cicuri = $inputuri;
+ my $answerformat = $cgi->param('format');
+ $answerformat = "" if (not defined($answerformat));
+
+ if (($answerformat ne "gz") and ($answerformat ne "normal")
+ and ($answerformat ne "")) {
+ die "Wrong output format: $answerformat, must be 'normal' ".
+ "or 'gz'\n";
+ }
my $cicfilename = $cicuri;
$cicfilename =~ s/cic:(.*)/$1/;
$cicfilename =~ s/theory:(.*)/$1/;
- $cicfilename = $helm_dir.$cicfilename.".xml";
my $cicurl = $map{$cicuri};
+ my $extension;
+ if ($cicurl =~ /\.xml$/) { # non gzipped file
+ $extension = ".xml";
+ } elsif ($cicurl =~ /\.xml\.gz$/) { # gzipped file
+ $extension = ".xml.gz";
+ } else { # error: unknown extension
+ die "unexpected extension in url: $cicurl, might be '.xml'".
+ "or '.xml.gz'";
+ }
+ $cicfilename = $helm_dir.$cicfilename.$extension;
+
if (!defined($cicurl)) {
print "\nNOT FOUND!!!!!\n";
$c->send_error(RC_NOT_FOUND)
@@ -59,94 +141,64 @@ while (my $c = $d->accept) {
print_request("cic",$cicuri,$cicurl,$cicfilename);
# Retrieves the file
- my $ciccontent = download(0,"cic",$cicurl,$cicfilename);
+ my $ciccontent = download(0,"cic",$cicurl,$cicfilename,$answerformat);
# Answering the client
answer($c,$ciccontent);
}
- } elsif ($http_method eq 'GET' and $http_path eq "/get") {
- # finds the uris, urls and filenames
- my $cicuri = $inputuri,
- $typesuri = $inputuri,
- $annuri = $inputuri;
- my $annsuffix;
- if ($inputuri =~ /\.types$/) {
- $cicuri =~ s/(.*)\.types$/$1/;
- undef($annuri);
- } elsif ($inputuri =~ /\.types\.ann$/) {
- $cicuri =~ s/(.*)\.types\.ann$/$1/;
- $typesuri =~ s/(.*)\.ann$/$1/;
- $annsuffix = ".types.ann";
- } elsif ($inputuri =~ /\.ann$/) {
- $cicuri =~ s/(.*)\.ann$/$1/;
- undef($typesuri);
- $annsuffix = ".ann";
+ } elsif ($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() {
+ # 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,$cont);
} else {
- undef($typesuri);
- undef($annuri);
+ die "Could not find DTD!";
}
-
- my $cicfilename = $cicuri;
- $cicfilename =~ s/cic:(.*)/$1/;
- $cicfilename =~ s/theory:(.*)/$1/;
- $cicfilename = $helm_dir.$cicfilename;
-
- my $typesfilename = $cicfilename.".types.xml" if $typesuri;
- my $annfilename = $cicfilename.$annsuffix.".xml" if $annuri;
- $cicfilename .= ".xml";
-
- my $cicurl = $map{$cicuri};
- my $typesurl = $map{$typesuri} if $typesuri;
- my $annurl = $map{$annuri} if $annuri;
-
- if (!defined($cicurl) ||
- (!defined($typesurl) && $typesuri) ||
- (!defined($annuri) && $annuri))
- {
- print "\nNOT FOUND!!!!!\n";
- $c->send_error(RC_NOT_FOUND)
+ } elsif ($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() {
+ s/DOCTYPE (.*) SYSTEM\s+"/DOCTYPE $1 SYSTEM "$myownurl\/getstyleconf?uri=/g;
+ $cont .= $_;
+ }
+ close(FD);
+ answer($c,$cont);
} else {
- print_request("cic",$cicuri,$cicurl,$cicfilename);
- print_request("types",$typesuri,$typesurl,$typesfilename)
- if ($typesuri);
- print_request("ann",$annuri,$annurl,$annfilename)
- if ($annuri);
-
- # Retrieves the files
-
- my $ciccontent = download(1,"cic",$cicurl,$cicfilename);
- my $typescontent =
- download(1,"types",$typesurl,$typesfilename) if ($typesuri);
- my $anncontent =
- download(1,"ann",$annurl,$annfilename) if ($annuri);
-
- # Merging the files together
-
- my $merged = <
-
-$ciccontent
-$typescontent
-$anncontent
-
-EOT
-
- # Answering the client
- answer($c,$merged);
+ die "Could not find Style Configuration File!";
}
- } elsif ($http_method eq 'GET' and $http_path eq "/getdtd") {
+ } elsif ($http_method eq 'GET' and $http_path eq "/getxslt") {
my $filename = $inputuri;
- $filename = $dtd_dir."/".$filename;
- print "DTD: $inputuri ==> ($filename)\n";
+ $filename = $style_dir."/".$filename;
+ print "XSLT: $inputuri ==> ($filename)\n";
if (stat($filename)) {
print "Using local copy\n";
- open(FD, $filename);
+ open(FD, $filename) or die "Cannot open $filename\n";
$cont = "";
- while() { $cont .= $_; }
+ while() {
+ # Vary bad heuristic for substituion of absolute URLs
+ # for relative ones
+ s/xsl:import\s+href="/xsl:import href="$myownurl\/getxslt?uri=/g ;
+ s/xsl:include\s+href="/xsl:include href="$myownurl\/getxslt?uri=/g ;
+ $cont .= $_;
+ }
close(FD);
answer($c,$cont);
} else {
- die "Could not find DTD!";
+ die "Could not find XSLT!";
}
} elsif ($http_method eq 'GET' and $http_path eq "/conf") {
my $quoted_html_link = $html_link;
@@ -159,13 +211,52 @@ EOT
$cont = "$quoted_html_link";
answer($c,$cont);
} elsif ($http_method eq 'GET' and $http_path eq "/update") {
- print "Update requested...";
- update();
- kill(USR1,getppid());
+ # rebuild urls_of_uris.db
+ print "Update requested...\n";
+ mk_urls_of_uris();
+ kill(USR1,getppid()); # signal changes to parent
print " done\n";
answer($c,"
Update done
");
+ } elsif ($http_method eq 'GET' and $http_path eq "/ls") {
+ # send back keys that begin with a given uri
+ my ($uritype,$uripattern,$uriprefix);
+ my $baseuri = $cgi->param('baseuri');
+ chop $baseuri if ($baseuri =~ /.*\/$/); # remove trailing "/"
+ my $outype = $cgi->param('format'); # output type, might be 'txt' or 'xml'
+ $uripattern = $baseuri;
+ $uripattern =~ s/^.*:(.*)/$1/;
+ if ($baseuri =~ /^cic:/) {
+ $uritype = "cic";
+ } elsif ($baseuri =~ /^theory:/) {
+ $uritype = "theory";
+ } else {
+ $uritype = "invalid";
+ }
+ if ($uritype ne "invalid") { # uri is valid
+ if (($outype ne 'txt') and ($outype ne 'xml')) { # invalid out type
+ print "Invalid output type specified: $outype\n";
+ answer($c,"
Invalid output type, may be ".
+ "\"txt\" or \"xml\"
");
+ } else { # valid output
+ print "BASEURI $baseuri, FORMAT $outype\n";
+ $cont = finduris($uritype,$uripattern,$outype);
+ answer($c,$cont);
+ }
+ } else { # invalid uri
+ print "Invalid uri: $baseuri, may begin with 'cic:', ".
+ "'theory:' or '*:'\n";
+ answer($c,"
Invalid uri , may begin with ".
+ "\"cic:\", \"theory:\" or \"*:\"