--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+\f
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+\f
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+\f
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+\f
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+\f
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program 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.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+++ /dev/null
-#!/usr/bin/perl
-
-# First of all, let's load HELM configuration
-use Env;
-my $HELM_CONFIGURATION_PREFIX = $ENV{"HELM_CONFIGURATION_PREFIX"};
-my $HELM_CONFIGURATION_PATH =
- $HELM_CONFIGURATION_PREFIX."/local/lib/helm/configuration.pl";
-# next require defines: $helm_dir, $html_link, $dtd_dir, $uris_dbm
-require $HELM_CONFIGURATION_PATH;
-
-
-
-use HTTP::Daemon;
-use HTTP::Status;
-use HTTP::Request;
-use LWP::UserAgent;
-use DB_File;
-
-#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;
-tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
-print "Please contact me at: <URL:", $d->url, ">\n";
-print "helm_dir: $helm_dir\n";
-print "dtd_dir: $dtd_dir\n";
-print "urls_of_uris.db: $uris_dbm.db\n";
-$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) {
- if (fork() == 0) {
- 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 = $r->url->path;
-
- if ($http_method eq 'GET' and $http_path eq "/getciconly") {
- # finds the uri, url and filename
- my $cicuri = $inputuri;
-
- my $cicfilename = $cicuri;
- $cicfilename =~ s/cic:(.*)/$1/;
- $cicfilename =~ s/theory:(.*)/$1/;
- $cicfilename = $helm_dir.$cicfilename.".xml";
-
- my $cicurl = $map{$cicuri};
- if (!defined($cicurl)) {
- print "\nNOT FOUND!!!!!\n";
- $c->send_error(RC_NOT_FOUND)
- } else {
- print_request("cic",$cicuri,$cicurl,$cicfilename);
-
- # Retrieves the file
- my $ciccontent = download(0,"cic",$cicurl,$cicfilename);
-
- # Answering the client
- answer($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);
- $annsuffix = ".ann";
- } else {
- undef($typesuri);
- undef($annuri);
- }
-
- 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";
- $c->send_error(RC_NOT_FOUND)
- } else {
- print_request("cic",$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 $merged = <<EOT;
-<?xml version="1.0" encoding="UTF-8"?>
-<cicxml uri="$cicuri">
-$ciccontent
-$typescontent
-$anncontent
-</cicxml>
-EOT
-
- # Answering the client
- answer($c,$merged);
- }
- } elsif ($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);
- $cont = "";
- while(<FD>) { $cont .= $_; }
- close(FD);
- answer($c,$cont);
- } else {
- die "Could not find DTD!";
- }
- } elsif ($http_method eq 'GET' and $http_path eq "/conf") {
- my $quoted_html_link = $html_link;
- $quoted_html_link =~ s/&/&/g;
- $quoted_html_link =~ s/</</g;
- $quoted_html_link =~ s/>/>/g;
- $quoted_html_link =~ s/'/'/g;
- $quoted_html_link =~ s/"/"/g;
- print "\nConfiguration requested, returned #$quoted_html_link#\n";
- $cont = "<?xml version=\"1.0\"?><html_link>$quoted_html_link</html_link>";
- answer($c,$cont);
- } elsif ($http_method eq 'GET' and $http_path eq "/update") {
- print "Update requested...";
- update();
- kill(USR1,getppid());
- print " done\n";
- answer($c,"<html><body><h1>Update done</h1></body></html>");
- } else {
- print "\nINVALID REQUEST!!!!!\n";
- $c->send_error(RC_FORBIDDEN)
- }
- print "\nRequest solved: ".$r->url."\n\n";
- }
- $c->close;
- undef($c);
- print "\nCONNECTION CLOSED\n\n";
- exit;
- } # fork
-}
-
-#================================
-
-
-#CSC: Too much powerful: creates even /home, /home/users/, ...
-#CSC: Does not raise errors if could not create dirs/files
-sub mkdirs
-{
- my ($pathname) = @_;
- my @dirs = split /\//,$pathname;
- my $tmp;
- foreach $dir (@dirs) {
- $tmp = ((defined($tmp)) ? $tmp."\/".$dir : "");
- mkdir($tmp,0777);
- }
- rmdir($tmp);
-}
-
-sub print_request
-{
- my ($str,$uri,$url,$filename) = @_;
- print $str."uri: $uri\n";
- print $str."url: $url\n";
- print $str."filename: $filename\n\n";
-}
-
-sub callback
-{
- my ($data) = @_;
- $cont .= $data;
-}
-
-sub download
-{
- my ($remove_headers,$str,$url,$filename) = @_;
- $cont = ""; # modified by side-effect by the callback function
- if (stat($filename)) {
- print "Using local copy for the $str file\n";
- open(FD, $filename);
- while(<FD>) { $cont .= $_; }
- close(FD);
- } else {
- print "Downloading the $str file\n";
- $ua = LWP::UserAgent->new;
- $request = HTTP::Request->new(GET => "$url");
- $response = $ua->request($request, \&callback);
-
- print "Storing the $str file\n";
- mkdirs($filename);
- open(FD, ">".$filename);
- print FD $cont;
- close(FD);
- }
- if ($remove_headers) {
- $cont =~ s/<\?xml [^?]*\?>//sg;
- $cont =~ s/<!DOCTYPE [^>]*>//sg;
- }
- return $cont;
-}
-
-sub answer
-{
- my ($c,$cont) = @_;
- my $res = new HTTP::Response;
- $res->content($cont);
- $c->send_response($res);
-}
-
-sub update {
- untie %map;
- tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
-}
--- /dev/null
+#!/usr/bin/perl
+
+# First of all, let's load HELM configuration
+use Env;
+my $HELM_LIBRARY_DIR = $ENV{"HELM_LIBRARY_DIR"};
+# this should be the only fixed constant
+my $DEFAULT_HELM_LIBRARY_DIR = "/usr/local/etc/helm";
+if (defined ($HELM_LIBRARY_DIR) {
+ $HELM_LIBRARY_PATH = $HELM_LIBRARY_DIR."./configuration.pl";
+} else {
+ $HELM_LIBRARY_PATH = $DEFAULT_HELM_LIBRARY_DIR."./configuration.pl";
+}
+# next require defines: $helm_dir, $html_link, $dtd_dir, $uris_dbm
+require $HELM_LIBRARY_PATH;
+
+use HTTP::Daemon;
+use HTTP::Status;
+use HTTP::Request;
+use LWP::UserAgent;
+use DB_File;
+
+#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;
+tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
+print "Please contact me at: <URL:", $d->url, ">\n";
+print "helm_dir: $helm_dir\n";
+print "dtd_dir: $dtd_dir\n";
+print "urls_of_uris.db: $uris_dbm.db\n";
+$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) {
+ if (fork() == 0) {
+ 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 = $r->url->path;
+
+ if ($http_method eq 'GET' and $http_path eq "/getciconly") {
+ # finds the uri, url and filename
+ my $cicuri = $inputuri;
+
+ my $cicfilename = $cicuri;
+ $cicfilename =~ s/cic:(.*)/$1/;
+ $cicfilename =~ s/theory:(.*)/$1/;
+ $cicfilename = $helm_dir.$cicfilename.".xml";
+
+ my $cicurl = $map{$cicuri};
+ if (!defined($cicurl)) {
+ print "\nNOT FOUND!!!!!\n";
+ $c->send_error(RC_NOT_FOUND)
+ } else {
+ print_request("cic",$cicuri,$cicurl,$cicfilename);
+
+ # Retrieves the file
+ my $ciccontent = download(0,"cic",$cicurl,$cicfilename);
+
+ # Answering the client
+ answer($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);
+ $annsuffix = ".ann";
+ } else {
+ undef($typesuri);
+ undef($annuri);
+ }
+
+ 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";
+ $c->send_error(RC_NOT_FOUND)
+ } else {
+ print_request("cic",$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 $merged = <<EOT;
+<?xml version="1.0" encoding="UTF-8"?>
+<cicxml uri="$cicuri">
+$ciccontent
+$typescontent
+$anncontent
+</cicxml>
+EOT
+
+ # Answering the client
+ answer($c,$merged);
+ }
+ } elsif ($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);
+ $cont = "";
+ while(<FD>) { $cont .= $_; }
+ close(FD);
+ answer($c,$cont);
+ } else {
+ die "Could not find DTD!";
+ }
+ } elsif ($http_method eq 'GET' and $http_path eq "/conf") {
+ my $quoted_html_link = $html_link;
+ $quoted_html_link =~ s/&/&/g;
+ $quoted_html_link =~ s/</</g;
+ $quoted_html_link =~ s/>/>/g;
+ $quoted_html_link =~ s/'/'/g;
+ $quoted_html_link =~ s/"/"/g;
+ print "\nConfiguration requested, returned #$quoted_html_link#\n";
+ $cont = "<?xml version=\"1.0\"?><html_link>$quoted_html_link</html_link>";
+ answer($c,$cont);
+ } elsif ($http_method eq 'GET' and $http_path eq "/update") {
+ print "Update requested...";
+ update();
+ kill(USR1,getppid());
+ print " done\n";
+ answer($c,"<html><body><h1>Update done</h1></body></html>");
+ } else {
+ print "\nINVALID REQUEST!!!!!\n";
+ $c->send_error(RC_FORBIDDEN)
+ }
+ print "\nRequest solved: ".$r->url."\n\n";
+ }
+ $c->close;
+ undef($c);
+ print "\nCONNECTION CLOSED\n\n";
+ exit;
+ } # fork
+}
+
+#================================
+
+
+#CSC: Too much powerful: creates even /home, /home/users/, ...
+#CSC: Does not raise errors if could not create dirs/files
+sub mkdirs
+{
+ my ($pathname) = @_;
+ my @dirs = split /\//,$pathname;
+ my $tmp;
+ foreach $dir (@dirs) {
+ $tmp = ((defined($tmp)) ? $tmp."\/".$dir : "");
+ mkdir($tmp,0777);
+ }
+ rmdir($tmp);
+}
+
+sub print_request
+{
+ my ($str,$uri,$url,$filename) = @_;
+ print $str."uri: $uri\n";
+ print $str."url: $url\n";
+ print $str."filename: $filename\n\n";
+}
+
+sub callback
+{
+ my ($data) = @_;
+ $cont .= $data;
+}
+
+sub download
+{
+ my ($remove_headers,$str,$url,$filename) = @_;
+ $cont = ""; # modified by side-effect by the callback function
+ if (stat($filename)) {
+ print "Using local copy for the $str file\n";
+ open(FD, $filename);
+ while(<FD>) { $cont .= $_; }
+ close(FD);
+ } else {
+ print "Downloading the $str file\n";
+ $ua = LWP::UserAgent->new;
+ $request = HTTP::Request->new(GET => "$url");
+ $response = $ua->request($request, \&callback);
+
+ print "Storing the $str file\n";
+ mkdirs($filename);
+ open(FD, ">".$filename);
+ print FD $cont;
+ close(FD);
+ }
+ if ($remove_headers) {
+ $cont =~ s/<\?xml [^?]*\?>//sg;
+ $cont =~ s/<!DOCTYPE [^>]*>//sg;
+ }
+ return $cont;
+}
+
+sub answer
+{
+ my ($c,$cont) = @_;
+ my $res = new HTTP::Response;
+ $res->content($cont);
+ $c->send_response($res);
+}
+
+sub update {
+ untie %map;
+ tie(%map, 'DB_File', $uris_dbm.".db", O_RDONLY, 0664);
+}
projects / helm.git / commitdiff