| 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 $_->[1], values %DETECTORS; |
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20 | |
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21 | use Data::Dump; |
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22 | ddx [$MAX_DETECT, \%DETECTORS]; |
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23 | } |
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24 | |
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25 | sub register($$$$) { |
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26 | my ($name, $max_detect, $detect, $serve) = @_; |
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27 | |
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28 | $DETECTORS{$name} = [$max_detect, $detect, $serve]; |
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29 | _update_detectors; |
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30 | |
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31 | Guard::guard { |
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32 | delete $DETECTORS{$name}; |
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33 | _update_detectors; |
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34 | } |
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35 | } |
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36 | |
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37 | our $deliantra_detector = ext::tcp::register deliantra => 10, sub { |
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38 | /^..version /s |
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39 | }, sub { |
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40 | my $ns = cf::client::create fileno $_[1], $_[0]; |
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41 | $ns->inbuf_append ($_[2]); |
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42 | }; |
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43 | |
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44 | for (@$BIND_ADDRESSES) { |
| 14 | my ($host, $port) = @$_; |
45 | my ($host, $port) = @$_; |
| 15 | warn "listening on ", (format_hostport $host, $port), "\n"; |
46 | cf::info "listening on ", (format_hostport $host, $port), "\n"; |
| 16 | |
47 | |
| 17 | push @LISTENERS, tcp_server $host, $port, sub { |
48 | push @LISTENERS, tcp_server $host, $port, sub { |
| 18 | my ($fh, $host, $port) = @_ |
49 | my ($fh, $host, $port) = @_ |
| 19 | or return; |
50 | or return; |
| 20 | |
51 | |
| 21 | warn "new connection from ", (format_hostport $host, $port), "\n"; |
52 | my $lhost = AnyEvent::Socket::format_address |
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53 | +(AnyEvent::Socket::unpack_sockaddr getsockname $fh)[1]; |
| 22 | |
54 | |
| 23 | cf::client::create fileno $fh, $host; |
55 | my $id = format_hostport $host, $port; |
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56 | |
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57 | cf::info "$id: accepted connection.\n" |
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58 | if $lhost ne $host; # do not log connections from the host, e.g. for watchdogs |
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59 | |
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60 | my $buf; |
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61 | my $w; $w = AE::io $fh, 0, sub { |
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62 | my $len = sysread $fh, $buf, 512, length $buf; |
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63 | |
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64 | if ($len) { |
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65 | for ($buf) { |
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66 | while (my ($name, $v) = each %DETECTORS) { |
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67 | if (my $cb = $v->[1]()) { |
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68 | undef $w; |
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69 | cf::debug "$id: detected protocol $name.\n"; |
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70 | $v->[2]($id, $fh, $buf); |
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71 | return; |
|
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72 | } |
|
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73 | } |
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74 | |
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75 | if (length >= $MAX_DETECT) { # unable to detect protocol |
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76 | undef $w; |
|
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77 | cf::debug "$id: data received, but cannot detect protocol, closing.\n"; |
|
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78 | } |
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79 | } |
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80 | } else { |
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81 | undef $w; |
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82 | cf::info "$id: read error during protocol detection ($!)\n"; |
|
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83 | } |
|
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84 | }; |
| 24 | }; |
85 | }; |
| 25 | } |
86 | } |
| 26 | |
87 | |
