server/ext/http.ext

#! perl # mandatory

# http server on base port

use Coro::AnyEvent;

sub send {
   my $self = $_[0];

   $self->{wbuf} .= $_[1];

   $self->{ww} ||= AE::io $self->{fh}, 1, sub {
      my $len = syswrite $self->{fh}, $self->{wbuf};
      substr $self->{wbuf}, 0, $len, "";

      delete $self->{ww} unless length $self->{wbuf};
   };
}

sub fatal {
   my ($self) = @_;

   $self->send ("HTTP/1.1 500 internal error\015\012");
   delete $self->{rw};
}

sub respond {
   $_[0]->send ("HTTP/1.1 $_[1]\015\012Content-Length: " . (0 + length $_[2]) . "\015\012$_[3]\015\012$_[2]");
}

sub handle_req {
   my ($self) = @_;

   while ($self->{rbuf} =~ s/^( ( [^\015]+ | . )+? )\015\012\015\012//xs) {
      my $req = $1;

      # we ignore headers atm.

      $req =~ s%^GET (\S+) HTTP/[0-9.]+\015\012%%
         or return $self->fatal;

      my $uri = $1;

      $uri =~ s%^http://[^/]*%%i; # just in case

      cf::debug "HTTP GET: $self->{id} $uri";

      if ($uri =~ m%^/([0-9a-f]+)$%) { # faces
         my $idx = $cf::FACEHASH{pack "H*", $1};

         $idx
            or return $self->respond ("404 illegal face name");

         if ($req =~ /if-none-match/i) { # dirtiest hack evar
            $self->respond ("304 not modified");
            return;
         }

         my $type = cf::face::get_type $idx, 1;

         if ($type & 1) {
            $self->respond ("404 type $type not served yet");
         } else {
            if ($type == 0) { # faces
               $self->respond ("200 OK", (cf::face::get_data $idx, 1),
                               "content-type: image/png\015\012"
                               . "cache-control: max-age=864000\015\012"
                               . "etag: \"0\"\015\012"
                              );
            } else {
               $self->respond ("404 type $type not served yet");
            }
         }
      } elsif ($uri eq "/allimgs") { # for debugging
         my $body = "<html><body>";

         for (1 .. cf::face::faces_size - 1) {
            next if cf::face::get_type $_;
            my $name = cf::face::get_chksum $_, 1;
            $body .= "<img src='" . (unpack "H*", $name) . "'><br>";
         }

         $body .= "</body></html>";

         $self->respond ("200 OK", $body, "Content-Type: text/html\015\012");
      } else {
         $self->respond ("404 not found");
      }
   }
}

# dirty hack: called directly from tcp.ext
sub server {
   my $self = bless {
      id   => $_[0],
      fh   => $_[1],
      rbuf => $_[2],
      wbuf => "",
   };

   $self->{rw} = AE::io $self->{fh}, 0, sub {
      my $len = sysread $self->{fh}, $self->{rbuf}, 4096, length $self->{rbuf};

      if ($len == 0) {
         delete $self->{rw};
      } else {
         $self->handle_req;

         delete $self->{rw} if length $self->{rbuf} > 8192; # headers too long
      }
   };

   $self->handle_req; # in the unlikely case of the buffer already forming a valid request
}

cf::register_exticmd http_faceurl => sub {
   my ($ns) = @_;

   "/"
};

Revision:	1.4
Committed:	Tue Oct 30 18:36:42 2012 UTC (11 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.3:	+40 -32 lines
Log Message:	etag
#	User	Rev	Content
1	root	1.1	#! perl # mandatory
2
3			# http server on base port
4
5			use Coro::AnyEvent;
6
7			sub send {
8			my $self = $_[0];
9
10			$self->{wbuf} .= $_[1];
11
12			$self->{ww} \|\|= AE::io $self->{fh}, 1, sub {
13			my $len = syswrite $self->{fh}, $self->{wbuf};
14			substr $self->{wbuf}, 0, $len, "";
15
16			delete $self->{ww} unless length $self->{wbuf};
17			};
18			}
19
20			sub fatal {
21			my ($self) = @_;
22
23			$self->send ("HTTP/1.1 500 internal error\015\012");
24			delete $self->{rw};
25			}
26
27			sub respond {
28			$_[0]->send ("HTTP/1.1 $_[1]\015\012Content-Length: " . (0 + length $_[2]) . "\015\012$_[3]\015\012$_[2]");
29			}
30
31			sub handle_req {
32			my ($self) = @_;
33
34	root	1.4	while ($self->{rbuf} =~ s/^( ( [^\015]+ \| . )+? )\015\012\015\012//xs) {
35			my $req = $1;
36	root	1.1
37	root	1.4	# we ignore headers atm.
38	root	1.1
39	root	1.4	$req =~ s%^GET (\S+) HTTP/[0-9.]+\015\012%%
40			or return $self->fatal;
41	root	1.1
42	root	1.4	my $uri = $1;
43	root	1.1
44	root	1.4	$uri =~ s%^http://[^/]*%%i; # just in case
45	root	1.1
46	root	1.4	cf::debug "HTTP GET: $self->{id} $uri";
47	root	1.2
48	root	1.4	if ($uri =~ m%^/([0-9a-f]+)$%) { # faces
49			my $idx = $cf::FACEHASH{pack "H*", $1};
50	root	1.2
51	root	1.4	$idx
52			or return $self->respond ("404 illegal face name");
53	root	1.1
54	root	1.4	if ($req =~ /if-none-match/i) { # dirtiest hack evar
55			$self->respond ("304 not modified");
56			return;
57			}
58	root	1.1
59	root	1.4	my $type = cf::face::get_type $idx, 1;
60	root	1.1
61	root	1.4	if ($type & 1) {
62			$self->respond ("404 type $type not served yet");
63	root	1.1	} else {
64	root	1.4	if ($type == 0) { # faces
65			$self->respond ("200 OK", (cf::face::get_data $idx, 1),
66			"content-type: image/png\015\012"
67			. "cache-control: max-age=864000\015\012"
68			. "etag: \"0\"\015\012"
69			);
70			} else {
71			$self->respond ("404 type $type not served yet");
72			}
73	root	1.1	}
74	root	1.4	} elsif ($uri eq "/allimgs") { # for debugging
75			my $body = "<html><body>";
76	root	1.2
77	root	1.4	for (1 .. cf::face::faces_size - 1) {
78			next if cf::face::get_type $_;
79			my $name = cf::face::get_chksum $_, 1;
80			$body .= "<img src='" . (unpack "H*", $name) . "'><br>";
81			}
82	root	1.2
83	root	1.4	$body .= "</body></html>";
84	root	1.2
85	root	1.4	$self->respond ("200 OK", $body, "Content-Type: text/html\015\012");
86			} else {
87			$self->respond ("404 not found");
88			}
89	root	1.1	}
90			}
91
92			# dirty hack: called directly from tcp.ext
93			sub server {
94			my $self = bless {
95	root	1.2	id => $_[0],
96			fh => $_[1],
97			rbuf => $_[2],
98	root	1.1	wbuf => "",
99			};
100
101			$self->{rw} = AE::io $self->{fh}, 0, sub {
102			my $len = sysread $self->{fh}, $self->{rbuf}, 4096, length $self->{rbuf};
103
104			if ($len == 0) {
105			delete $self->{rw};
106			} else {
107			$self->handle_req;
108
109			delete $self->{rw} if length $self->{rbuf} > 8192; # headers too long
110			}
111			};
112
113			$self->handle_req; # in the unlikely case of the buffer already forming a valid request
114			}
115
116			cf::register_exticmd http_faceurl => sub {
117			my ($ns) = @_;
118
119			"/"
120			};
121