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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
package Net::FastCGI::IO;
use strict;
use warnings;
use warnings::register;
use Carp qw[];
use Errno qw[EBADF EINTR EPIPE];
use Net::FastCGI::Constant qw[FCGI_HEADER_LEN];
use Net::FastCGI::Protocol qw[build_header build_record build_stream
parse_header parse_record];
BEGIN {
our $VERSION = '0.14';
our @EXPORT_OK = qw[ can_read
can_write
read_header
read_record
write_header
write_record
write_stream ];
our %EXPORT_TAGS = ( all => \@EXPORT_OK );
require Exporter;
*import = \&Exporter::import;
eval q<use Time::HiRes 'time'>;
}
*throw = \&Carp::croak;
sub read_header {
@_ == 1 || throw(q/Usage: read_header(fh)/);
my ($fh) = @_;
my $len = FCGI_HEADER_LEN;
my $off = 0;
my $buf;
while ($len) {
my $r = sysread($fh, $buf, $len, $off);
if (defined $r) {
last unless $r;
$len -= $r;
$off += $r;
}
elsif ($! != EINTR) {
warnings::warn(qq<FastCGI: Could not read FCGI_Header: '$!'>)
if warnings::enabled;
return;
}
}
if ($len) {
$! = $off ? EPIPE : 0;
warnings::warn(q<FastCGI: Could not read FCGI_Header: Unexpected end of stream>)
if $off && warnings::enabled;
return;
}
return parse_header($buf);
}
sub write_header {
@_ == 5 || throw(q/Usage: write_header(fh, type, request_id, content_length, padding_length)/);
my $fh = shift;
my $buf = &build_header;
my $len = FCGI_HEADER_LEN;
my $off = 0;
while () {
my $r = syswrite($fh, $buf, $len, $off);
if (defined $r) {
$len -= $r;
$off += $r;
last unless $len;
}
elsif ($! != EINTR) {
warnings::warn(qq<FastCGI: Could not write FCGI_Header: '$!'>)
if warnings::enabled;
return undef;
}
}
return $off;
}
sub read_record {
@_ == 1 || throw(q/Usage: read_record(fh)/);
my ($fh) = @_;
my $len = FCGI_HEADER_LEN;
my $off = 0;
my $buf;
while ($len) {
my $r = sysread($fh, $buf, $len, $off);
if (defined $r) {
last unless $r;
$len -= $r;
$off += $r;
if (!$len && $off == FCGI_HEADER_LEN) {
$len = vec($buf, 2, 16) # Content Length
+ vec($buf, 6, 8); # Padding Length
}
}
elsif ($! != EINTR) {
warnings::warn(qq<FastCGI: Could not read FCGI_Record: '$!'>)
if warnings::enabled;
return;
}
}
if ($len) {
$! = $off ? EPIPE : 0;
warnings::warn(q<FastCGI: Could not read FCGI_Record: Unexpected end of stream>)
if $off && warnings::enabled;
return;
}
return parse_record($buf);
}
sub write_record {
@_ == 4 || @_ == 5 || throw(q/Usage: write_record(fh, type, request_id [, content])/);
my $fh = shift;
my $buf = &build_record;
my $len = length $buf;
my $off = 0;
while () {
my $r = syswrite($fh, $buf, $len, $off);
if (defined $r) {
$len -= $r;
$off += $r;
last unless $len;
}
elsif ($! != EINTR) {
warnings::warn(qq<FastCGI: Could not write FCGI_Record: '$!'>)
if warnings::enabled;
return undef;
}
}
return $off;
}
sub write_stream {
@_ == 4 || @_ == 5 || throw(q/Usage: write_stream(fh, type, request_id, content [, terminate])/);
my $fh = shift;
my $buf = &build_stream;
my $len = length $buf;
my $off = 0;
while () {
my $r = syswrite($fh, $buf, $len, $off);
if (defined $r) {
$len -= $r;
$off += $r;
last unless $len;
}
elsif ($! != EINTR) {
warnings::warn(qq<FastCGI: Could not write FCGI_Record stream: '$!'>)
if warnings::enabled;
return undef;
}
}
return $off;
}
sub can_read (*$) {
@_ == 2 || throw(q/Usage: can_read(fh, timeout)/);
my ($fh, $timeout) = @_;
my $fd = fileno($fh);
unless (defined $fd && $fd >= 0) {
$! = EBADF;
return undef;
}
my $initial = time;
my $pending = $timeout;
my $nfound;
vec(my $fdset = '', $fd, 1) = 1;
while () {
$nfound = select($fdset, undef, undef, $pending);
if ($nfound == -1) {
return undef unless $! == EINTR;
redo if !$timeout || ($pending = $timeout - (time - $initial)) > 0;
$nfound = 0;
}
last;
}
$! = 0;
return $nfound;
}
sub can_write (*$) {
@_ == 2 || throw(q/Usage: can_write(fh, timeout)/);
my ($fh, $timeout) = @_;
my $fd = fileno($fh);
unless (defined $fd && $fd >= 0) {
$! = EBADF;
return undef;
}
my $initial = time;
my $pending = $timeout;
my $nfound;
vec(my $fdset = '', $fd, 1) = 1;
while () {
$nfound = select(undef, $fdset, undef, $pending);
if ($nfound == -1) {
return undef unless $! == EINTR;
redo if !$timeout || ($pending = $timeout - (time - $initial)) > 0;
$nfound = 0;
}
last;
}
$! = 0;
return $nfound;
}
1;
|
