| 1 | #! perl # mandatory |
1 | #! perl # mandatory |
| 2 | |
2 | |
| 3 | # this listens for new tcp connections and hands them over to the server core |
3 | # this listens for new tcp connections and hands them over to the server core |
| 4 | # wether this being an extension introduces or reduces stability problems |
4 | # whether this being an extension introduces or reduces stability problems |
| 5 | # is unknown as of today. |
5 | # is unknown as of today. |
| 6 | |
6 | |
| 7 | use Socket; |
7 | use Socket; |
| 8 | use AnyEvent::Socket; |
8 | use AnyEvent::Socket; |
| 9 | |
9 | |
| 10 | our $BIND = $cf::CFG{bind_addresses} || [[undef, 13327]]; |
10 | CONF BIND_ADDRESSES = [[undef, 13327]]; |
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11 | |
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12 | our $MAX_DETECT; # how many bytes to read to identify the protocol |
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13 | |
| 11 | our @LISTENERS; |
14 | our @LISTENERS; |
|
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15 | our @DETECTORS; |
|
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16 | our %DETECTORS; |
| 12 | |
17 | |
| 13 | for (@$BIND) { |
18 | sub _update_detectors { |
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19 | $MAX_DETECT = List::Util::max map $_->[1], values %DETECTORS; |
|
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20 | } |
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21 | |
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22 | sub register($$$$) { |
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23 | my ($name, $max_detect, $detect, $serve) = @_; |
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24 | |
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25 | $DETECTORS{$name} = [$max_detect, $detect, $serve, $name]; |
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26 | _update_detectors; |
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27 | |
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28 | Guard::guard { |
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29 | delete $DETECTORS{$name}; |
|
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30 | _update_detectors; |
|
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31 | } |
|
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32 | } |
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33 | |
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34 | our $deliantra_detector = ext::tcp::register deliantra => 10, sub { |
|
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35 | /^..version /s |
|
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36 | }, sub { |
|
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37 | my $ns = cf::client::create fileno $_[1], $_[0]; |
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38 | $ns->run; |
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39 | $ns->inbuf_append ($_[2]); |
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40 | }; |
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41 | |
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|
42 | for (@$BIND_ADDRESSES) { |
| 14 | my ($host, $port) = @$_; |
43 | my ($host, $port) = @$_; |
| 15 | cf::info "listening on ", (format_hostport $host, $port), "\n"; |
44 | cf::info "listening on ", (format_hostport $host, $port), "\n"; |
| 16 | |
45 | |
| 17 | push @LISTENERS, tcp_server $host, $port, sub { |
46 | push @LISTENERS, tcp_server $host, $port, sub { |
| 18 | my ($fh, $host, $port) = @_ |
47 | my ($fh, $host, $port) = @_ |
| 19 | or return; |
48 | or return; |
| 20 | |
49 | |
| 21 | cf::info "new connection from ", (format_hostport $host, $port), "\n"; |
50 | my $lhost = AnyEvent::Socket::format_address |
|
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51 | +(AnyEvent::Socket::unpack_sockaddr getsockname $fh)[1]; |
| 22 | |
52 | |
| 23 | cf::client::create fileno $fh, $host; |
53 | my $id = format_hostport $host, $port; |
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54 | |
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55 | cf::info "$id: accepted connection.\n" |
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56 | if $lhost ne $host; # do not log connections from the host, e.g. for watchdogs |
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57 | |
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58 | my $buf; |
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59 | my $w; $w = AE::io $fh, 0, sub { |
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60 | my $len = sysread $fh, $buf, 512, length $buf; |
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61 | |
|
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62 | if ($len) { |
|
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63 | for ($buf) { |
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64 | for my $v (values %DETECTORS) { |
|
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65 | if (my $cb = $v->[1]()) { |
|
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66 | undef $w; |
|
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67 | cf::debug "$id: detected protocol $v->[3].\n"; |
|
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68 | $v->[2]($id, $fh, $buf); |
|
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69 | return; |
|
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70 | } |
|
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71 | } |
|
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72 | |
|
|
73 | if (length >= $MAX_DETECT) { # unable to detect protocol |
|
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74 | undef $w; |
|
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75 | cf::debug "$id: data received, but cannot detect protocol, closing.\n"; |
|
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76 | } |
|
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77 | } |
|
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78 | } else { |
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79 | undef $w; |
|
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80 | cf::info "$id: read error during protocol detection ($!)\n"; |
|
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81 | } |
|
|
82 | }; |
| 24 | }; |
83 | }; |
| 25 | } |
84 | } |
| 26 | |
85 | |
