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/cvs/Coro/myhttpd/access.pl
Revision: 1.26
Committed: Tue Dec 4 15:57:59 2001 UTC (22 years, 7 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.25: +13 -1 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 package transferqueue;
2
3 my @reserve = (
4 [ 1_200_000, 1],
5 [ 3_000_000, 1],
6 [ 75_000_000, 1],
7 );
8
9 sub new {
10 my $class = shift;
11 my $self = bless {
12 slots => $_[0],
13 lastspb => 0,
14 avgspb => 0,
15 }, $class;
16 $self->{reschedule} = Event->timer(
17 after => 10,
18 interval => 3,
19 cb => sub { $self->wake_next },
20 );
21 $self;
22 }
23
24 sub start_transfer {
25 my $self = shift;
26 my $size = $_[0];
27
28 my $transfer = bless {
29 queue => $self,
30 time => $::NOW,
31 size => $size,
32 coro => $Coro::current,
33 started => 0,
34 }, transfer::;
35
36 push @{$self->{wait}}, $transfer;
37
38 $self->wake_next;
39
40 $transfer;
41 }
42
43 sub sort {
44 my @queue = grep $_, @{$_[0]{wait}};
45
46 $_->{spb} = ($::NOW-$_->{time}) / ($_->{size} || 1) for @queue;
47
48 $_[0]{wait} = [sort { $b->{spb} <=> $a->{spb} } @queue];
49
50 Scalar::Util::weaken $_ for @{$_[0]{wait}};
51 }
52
53 sub wake_next {
54 my $self = shift;
55
56 $self->sort;
57
58 while (@{$self->{wait}}) {
59 my $size = $self->{wait}[0]{size};
60 my $min = 0;
61 for (@reserve) {
62 last if $size <= $_->[0];
63 $min += $_->[1];
64 }
65 last unless $self->{slots} > $min;
66 my $transfer = shift @{$self->{wait}};
67 $self->{lastspb} = $transfer->{spb};
68 $self->{avgspb} ||= $transfer->{spb};
69 $self->{avgspb} = $self->{avgspb} * 0.95 + $transfer->{spb} * 0.05;
70 $self->{started}++;
71 $transfer->wake;
72 last;
73 }
74 }
75
76 sub waiters {
77 $_[0]->sort;
78 @{$_[0]{wait}};
79 }
80
81 sub DESTROY {
82 my $self = shift;
83
84 $self->{reschedule}->cancel;
85 }
86
87 package transfer;
88
89 use Coro::Timer ();
90
91 sub wake {
92 my $self = shift;
93
94 $self->{alloc} = 1;
95 $self->{queue}{slots}--;
96 $self->{wake} and $self->{wake}->ready;
97 }
98
99 sub try {
100 my $self = shift;
101
102 $self->{alloc} || do {
103 my $timeout = Coro::Timer::timeout $_[0];
104 local $self->{wake} = $self->{coro};
105
106 Coro::schedule;
107
108 $self->{alloc};
109 }
110 }
111
112 sub DESTROY {
113 my $self = shift;
114
115 if ($self->{alloc}) {
116 $self->{queue}{slots}++;
117 $self->{queue}->wake_next;
118 }
119 }
120
121 package conn;
122
123 our %blockuri;
124 our $blockref;
125
126 sub read_blockuri {
127 local *B;
128 my %group;
129 %blockuri = ();
130 if (open B, "<blockuri") {
131 while (<B>) {
132 chomp;
133 if (/^group\s+(\S+)\s+(.*)/i) {
134 $group{$1} = [split /\s+/, $2];
135 } elsif (/^!([^\t]*)\t\s*(.*)/) {
136 my $g = $1;
137 my @r;
138 for (split /\s+/, $2) {
139 push @r, $group{$_} ? @{$group{$_}} : $_;
140 }
141 print "not($g) => (@r)\n";
142 push @{$blockuri{$_}}, $g for @r;
143 push @blockuri, [qr/$g/i, \@r];
144 } elsif (/\S/) {
145 print "blockuri: unparsable line: $_\n";
146 }
147 }
148 for (keys %blockuri) {
149 my $qr = join ")|(?:", @{$blockuri{$_}};
150 $blockuri{$_} = qr{(?:$qr)}i;
151 }
152 } else {
153 print "no blockuri\n";
154 }
155 }
156
157 sub read_blockref {
158 local *B;
159 my @blockref;
160 if (open B, "<blockreferer") {
161 while (<B>) {
162 chomp;
163 if (/^([^\t]*)\t\s*(.*)/) {
164 push @blockref, $1;
165 } elsif (/\S/) {
166 print "blockref: unparsable line: $_\n";
167 }
168 }
169 $blockref = join ")|(?:", @blockref;
170 $blockref = qr{^(?:$blockref)}i;
171 } else {
172 print "no blockref\n";
173 $blockref = qr{^x^};
174 }
175 }
176
177 read_blockuri;
178 read_blockref;
179
180 use Tie::Cache;
181 tie %whois_cache, Tie::Cache::, 32;
182
183 sub access_check {
184 my $self = shift;
185
186 my $ref = $self->{h}{referer};
187 my $uri = $self->{path};
188 my %disallow;
189
190 $self->err_block_referer
191 if $self->{h}{referer} =~ $blockref;
192
193 my $whois = $whois_cache{$self->{remote_addr}}
194 ||= netgeo::ip_request($self->{remote_addr});
195
196 my $country = "XX";
197
198 if ($whois =~ /^\*cy: (\S+)/m) {
199 $country = uc $1;
200 } else {
201 $self->slog(9, "no country($whois)");
202 }
203
204 $self->{country} = $country;
205
206 $self->err_block_country($whois)
207 if $self->{path} =~ $blockuri{$country};
208 }
209
210 1;