1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#!/usr/bin/perl
use Socket;
use Carp;
use FileHandle;
use strict;
sub spawn; # forward declaration
sub logmsg { #print "$0 $$: @_ at ", scalar localtime, "\n"
}
my $verbose=0; # set to 1 for debugging
my $port = 8999; # just a default
do {
if($ARGV[0] eq "-v") {
$verbose=1;
}
elsif($ARGV[0] =~ /^(\d+)$/) {
$port = $1;
}
} while(shift @ARGV);
my $proto = getprotobyname('tcp') || 6;
socket(Server, PF_INET, SOCK_STREAM, $proto)|| die "socket: $!";
setsockopt(Server, SOL_SOCKET, SO_REUSEADDR,
pack("l", 1)) || die "setsockopt: $!";
bind(Server, sockaddr_in($port, INADDR_ANY))|| die "bind: $!";
listen(Server,SOMAXCONN) || die "listen: $!";
if($verbose) {
print "HTTP server started on port $port\n";
}
open(PID, ">.http.pid");
print PID $$;
close(PID);
my $waitedpid = 0;
my $paddr;
sub REAPER {
$waitedpid = wait;
$SIG{CHLD} = \&REAPER; # loathe sysV
logmsg "reaped $waitedpid" . ($? ? " with exit $?" : '');
}
$SIG{CHLD} = \&REAPER;
for ( $waitedpid = 0;
($paddr = accept(Client,Server)) || $waitedpid;
$waitedpid = 0, close Client)
{
next if $waitedpid and not $paddr;
my($port,$iaddr) = sockaddr_in($paddr);
my $name = gethostbyaddr($iaddr,AF_INET);
logmsg "connection from $name [", inet_ntoa($iaddr), "] at port $port";
# this code is forked and run
spawn sub {
my ($request, $path, $ver, $left, $cl);
my @headers;
stdin:
while(<STDIN>) {
if($_ =~ /([A-Z]*) (.*) HTTP\/1.(\d)/) {
$request=$1;
$path=$2;
$ver=$3;
}
elsif($_ =~ /^Content-Length: (\d*)/) {
$cl=$1;
}
if($verbose) {
print STDERR "IN: $_";
}
push @headers, $_;
if($left > 0) {
$left -= length($_);
if($left == 0) {
$left = -1; # just to force a loop break here
}
}
# print STDERR "RCV ($left): $_";
if(!$left &&
($_ eq "\r\n") or ($_ eq "")) {
if($request =~ /^(POST|PUT)$/) {
$left=$cl;
}
else {
$left = -1; # force abort
}
}
if($left < 0) {
last;
}
}
if($path =~ /verifiedserver/) {
# this is a hard-coded query-string for the test script
# to verify that this is the server actually running!
print "HTTP/1.1 999 WE ROOLZ\r\n";
exit;
}
else {
#
# we always start the path with a number, this is the
# test number that this server will use to know what
# contents to pass back to the client
#
my $testnum;
if($path =~ /.*\/(\d*)/) {
$testnum=$1;
if($verbose) {
print STDERR "OUT: sending reply $testnum\n";
}
}
else {
$testnum=0;
}
open(INPUT, ">>log/server.input");
for(@headers) {
print INPUT $_;
}
close(INPUT);
if(0 == $testnum ) {
print "HTTP/1.1 200 OK\r\n",
"header: yes\r\n",
"\r\n",
"You must enter a test number to get good data back\r\n";
}
else {
# send a custom reply to the client
open(DATA, "<data/reply$testnum.txt");
while(<DATA>) {
print $_;
if($verbose) {
print STDERR "OUT: $_";
}
}
close(DATA);
}
}
# print "Hello there, $name, it's now ", scalar localtime, "\r\n";
};
}
sub spawn {
my $coderef = shift;
unless (@_ == 0 && $coderef && ref($coderef) eq 'CODE') {
confess "usage: spawn CODEREF";
}
my $pid;
if (!defined($pid = fork)) {
logmsg "cannot fork: $!";
return;
} elsif ($pid) {
logmsg "begat $pid";
return; # I'm the parent
}
# else I'm the child -- go spawn
open(STDIN, "<&Client") || die "can't dup client to stdin";
open(STDOUT, ">&Client") || die "can't dup client to stdout";
## open(STDERR, ">&STDOUT") || die "can't dup stdout to stderr";
exit &$coderef();
}
|
