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]");
}

my $cache_headers = "cache-control: max-age=8640000\015\012"
                    . "etag: \"0\"\015\012";

sub content_type {
   return "content-type: image/png\015\012"   if $_[0] =~ /^\x89PNG/;
   return "content-type: image/jpeg\015\012"  if $_[0] =~ /^......JFIF/s;
   return "content-type: audio/wav\015\012"   if $_[0] =~ /^RIFF/;
   return "content-type: audio/x-ogg\015\012" if $_[0] =~ /^OggS/;

   "content-type: text/plain\015\012"
}

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 ($uri =~ m%^/(M?)([0-9a-f]+)$%) { # faces
         my $want_meta = $1;
         my $idx = $cf::FACEHASH{pack "H*", $2};

         $idx
            or do { $self->respond ("404 illegal face name"), next };

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

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

         (my $meta, $data) = unpack "(w/a*)*", $data
            if $type & 1;

         if ($want_meta) {
            if ($type & 1) {
               $self->respond ("200 OK", $meta, "content-type: text/plain\015\012" . $cache_headers);
            } else {
               $self->respond ("404 type $type has no metadata");
            }
         } else {
            $self->respond ("200 OK", $data, (content_type $data) . $cache_headers);
         }

      } elsif ($uri eq "/debug") { # for debugging
         my $body = "<html><body>";

         for my $type (6, 5, 4, 3, 2, 1, 0) {
            $body .= "<h1>$type</h1>";

            for (1 .. cf::face::faces_size - 1) {
               next if $type != cf::face::get_type $_;
               my $name = cf::face::get_name $_;
               my $id   = unpack "H*", cf::face::get_chksum $_, 1;
               $body .= "<a href='$id'>$name ($id)</a>";
               $body .= " <a href='M$id'>(meta)</a>" if $type & 1;
               $body .= "<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:	1.8
Committed:	Wed Oct 31 11:19:30 2012 UTC (11 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.7:	+35 -13 lines
Log Message:	* empty log message *
#	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	root	1.6	$_[0]->send ("HTTP/1.1 $_[1]\015\012content-length: " . (0 + length $_[2]) . "\015\012$_[3]\015\012$_[2]");
29	root	1.1	}
30
31	root	1.6	my $cache_headers = "cache-control: max-age=8640000\015\012"
32			. "etag: \"0\"\015\012";
33
34	root	1.8	sub content_type {
35			return "content-type: image/png\015\012" if $_[0] =~ /^\x89PNG/;
36			return "content-type: image/jpeg\015\012" if $_[0] =~ /^......JFIF/s;
37			return "content-type: audio/wav\015\012" if $_[0] =~ /^RIFF/;
38			return "content-type: audio/x-ogg\015\012" if $_[0] =~ /^OggS/;
39
40			"content-type: text/plain\015\012"
41			}
42
43	root	1.1	sub handle_req {
44			my ($self) = @_;
45
46	root	1.4	while ($self->{rbuf} =~ s/^( ( [^\015]+ \| . )+? )\015\012\015\012//xs) {
47			my $req = $1;
48	root	1.1
49	root	1.4	# we ignore headers atm.
50	root	1.1
51	root	1.4	$req =~ s%^GET (\S+) HTTP/[0-9.]+\015\012%%
52			or return $self->fatal;
53	root	1.1
54	root	1.4	my $uri = $1;
55	root	1.1
56	root	1.4	$uri =~ s%^http://[^/]*%%i; # just in case
57	root	1.1
58	root	1.4	cf::debug "HTTP GET: $self->{id} $uri";
59	root	1.2
60	root	1.8	if ($uri =~ m%^/(M?)([0-9a-f]+)$%) { # faces
61			my $want_meta = $1;
62			my $idx = $cf::FACEHASH{pack "H*", $2};
63	root	1.2
64	root	1.4	$idx
65	root	1.7	or do { $self->respond ("404 illegal face name"), next };
66	root	1.1
67	root	1.4	if ($req =~ /if-none-match/i) { # dirtiest hack evar
68	root	1.6	$self->respond ("304 not modified", "", $cache_headers);
69	root	1.7	next;
70	root	1.4	}
71	root	1.1
72	root	1.4	my $type = cf::face::get_type $idx, 1;
73	root	1.8	my $data = cf::face::get_data $idx, 1;
74	root	1.1
75	root	1.8	(my $meta, $data) = unpack "(w/a)", $data
76			if $type & 1;
77
78			if ($want_meta) {
79			if ($type & 1) {
80			$self->respond ("200 OK", $meta, "content-type: text/plain\015\012" . $cache_headers);
81	root	1.4	} else {
82	root	1.8	$self->respond ("404 type $type has no metadata");
83	root	1.4	}
84	root	1.8	} else {
85			$self->respond ("200 OK", $data, (content_type $data) . $cache_headers);
86	root	1.1	}
87	root	1.8
88			} elsif ($uri eq "/debug") { # for debugging
89	root	1.4	my $body = "<html><body>";
90	root	1.2
91	root	1.8	for my $type (6, 5, 4, 3, 2, 1, 0) {
92			$body .= "<h1>$type</h1>";
93
94			for (1 .. cf::face::faces_size - 1) {
95			next if $type != cf::face::get_type $_;
96			my $name = cf::face::get_name $_;
97			my $id = unpack "H*", cf::face::get_chksum $_, 1;
98			$body .= "<a href='$id'>$name ($id)</a>";
99			$body .= " <a href='M$id'>(meta)</a>" if $type & 1;
100			$body .= "<br>";
101			}
102	root	1.4	}
103	root	1.2
104	root	1.4	$body .= "</body></html>";
105	root	1.2
106	root	1.4	$self->respond ("200 OK", $body, "Content-Type: text/html\015\012");
107			} else {
108			$self->respond ("404 not found");
109			}
110	root	1.1	}
111			}
112
113			# dirty hack: called directly from tcp.ext
114			sub server {
115			my $self = bless {
116	root	1.2	id => $_[0],
117			fh => $_[1],
118			rbuf => $_[2],
119	root	1.1	wbuf => "",
120			};
121
122			$self->{rw} = AE::io $self->{fh}, 0, sub {
123			my $len = sysread $self->{fh}, $self->{rbuf}, 4096, length $self->{rbuf};
124
125			if ($len == 0) {
126			delete $self->{rw};
127			} else {
128			$self->handle_req;
129
130			delete $self->{rw} if length $self->{rbuf} > 8192; # headers too long
131			}
132			};
133
134			$self->handle_req; # in the unlikely case of the buffer already forming a valid request
135			}
136
137			cf::register_exticmd http_faceurl => sub {
138			my ($ns) = @_;
139
140			"/"
141			};
142