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/cvs/Coro/myhttpd/access.pl
Revision: 1.28
Committed: Thu Jan 3 01:20:17 2002 UTC (22 years, 6 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.27: +7 -1 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 package transferqueue;
2
3 my @reserve = (
4 [ 1_200_000, 2],
5 [ 8_000_000, 1],
6 [ 75_000_000, 1],
7 );
8
9 sub new {
10 my $class = shift;
11 my $self = bless {
12 slots => 1,
13 maxsize => 0,
14 lastspb => 0,
15 avgspb => 0,
16 @_,
17 }, $class;
18 $self->{reschedule} = Event->timer(
19 after => 10,
20 interval => 3,
21 cb => sub { $self->wake_next },
22 );
23 $self;
24 }
25
26 sub start_transfer {
27 my $self = shift;
28 my $size = $_[0];
29
30 if ($self->{maxsize} && $self->{maxsize} < $size) {
31 $size = $self->{maxsize};
32 }
33
34 my $transfer = bless {
35 queue => $self,
36 time => $::NOW,
37 size => $size,
38 coro => $Coro::current,
39 started => 0,
40 }, transfer::;
41
42 push @{$self->{wait}}, $transfer;
43
44 $self->wake_next;
45
46 $transfer;
47 }
48
49 sub sort {
50 my @queue = grep $_, @{$_[0]{wait}};
51
52 $_->{spb} = ($::NOW-$_->{time}) / ($_->{size} || 1) for @queue;
53
54 $_[0]{wait} = [sort { $b->{spb} <=> $a->{spb} } @queue];
55
56 Scalar::Util::weaken $_ for @{$_[0]{wait}};
57 }
58
59 sub wake_next {
60 my $self = shift;
61
62 $self->sort;
63
64 while (@{$self->{wait}}) {
65 my $size = $self->{wait}[0]{size};
66 my $min = 0;
67 for (@reserve) {
68 last if $size <= $_->[0];
69 $min += $_->[1];
70 }
71 last unless $self->{slots} > $min;
72 my $transfer = shift @{$self->{wait}};
73 $self->{lastspb} = $transfer->{spb};
74 $self->{avgspb} = $self->{avgspb} * 0.99 + $transfer->{spb} * 0.01;
75 $self->{started}++;
76 $transfer->wake;
77 last;
78 }
79 }
80
81 sub waiters {
82 $_[0]->sort;
83 @{$_[0]{wait}};
84 }
85
86 sub DESTROY {
87 my $self = shift;
88
89 $self->{reschedule}->cancel;
90 }
91
92 package transfer;
93
94 use Coro::Timer ();
95
96 sub wake {
97 my $self = shift;
98
99 $self->{alloc} = 1;
100 $self->{queue}{slots}--;
101 $self->{wake} and $self->{wake}->ready;
102 }
103
104 sub try {
105 my $self = shift;
106
107 $self->{alloc} || do {
108 my $timeout = Coro::Timer::timeout $_[0];
109 local $self->{wake} = $self->{coro};
110
111 Coro::schedule;
112
113 $self->{alloc};
114 }
115 }
116
117 sub DESTROY {
118 my $self = shift;
119
120 if ($self->{alloc}) {
121 $self->{queue}{slots}++;
122 $self->{queue}->wake_next;
123 }
124 }
125
126 package conn;
127
128 our %blockuri;
129 our $blockref;
130
131 sub read_blockuri {
132 local *B;
133 my %group;
134 %blockuri = ();
135 if (open B, "<blockuri") {
136 while (<B>) {
137 chomp;
138 if (/^group\s+(\S+)\s+(.*)/i) {
139 $group{$1} = [split /\s+/, $2];
140 } elsif (/^!([^\t]*)\t\s*(.*)/) {
141 my $g = $1;
142 my @r;
143 for (split /\s+/, $2) {
144 push @r, $group{$_} ? @{$group{$_}} : $_;
145 }
146 print "not($g) => (@r)\n";
147 push @{$blockuri{$_}}, $g for @r;
148 push @blockuri, [qr/$g/i, \@r];
149 } elsif (/\S/) {
150 print "blockuri: unparsable line: $_\n";
151 }
152 }
153 for (keys %blockuri) {
154 my $qr = join ")|(?:", @{$blockuri{$_}};
155 $blockuri{$_} = qr{(?:$qr)}i;
156 }
157 } else {
158 print "no blockuri\n";
159 }
160 }
161
162 sub read_blockref {
163 local *B;
164 my @blockref;
165 if (open B, "<blockreferer") {
166 while (<B>) {
167 chomp;
168 if (/^([^\t]*)\t\s*(.*)/) {
169 push @blockref, $1;
170 } elsif (/\S/) {
171 print "blockref: unparsable line: $_\n";
172 }
173 }
174 $blockref = join ")|(?:", @blockref;
175 $blockref = qr{^(?:$blockref)}i;
176 } else {
177 print "no blockref\n";
178 $blockref = qr{^x^};
179 }
180 }
181
182 read_blockuri;
183 read_blockref;
184
185 use Tie::Cache;
186 tie %whois_cache, Tie::Cache::, 32;
187
188 sub access_check {
189 my $self = shift;
190
191 my $ref = $self->{h}{referer};
192 my $uri = $self->{path};
193 my %disallow;
194
195 $self->err_block_referer
196 if $self->{h}{referer} =~ $blockref;
197
198 my $whois = $whois_cache{$self->{remote_addr}}
199 ||= netgeo::ip_request($self->{remote_addr});
200
201 my $country = "XX";
202
203 if ($whois =~ /^\*cy: (\S+)/m) {
204 $country = uc $1;
205 } else {
206 $self->slog(9, "no country($whois)");
207 }
208
209 $self->{country} = $country;
210
211 $self->err_block_country($whois)
212 if $self->{path} =~ $blockuri{$country};
213 }
214
215 1;