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
|
package HTTP::Tinyish::Wget;
use strict;
use warnings;
use parent qw(HTTP::Tinyish::Base);
use IPC::Run3 qw(run3);
use File::Which qw(which);
my %supports;
my $wget;
my $method_supported;
sub _run_wget {
run3([$wget, @_], \undef, \my $out, \my $err);
wantarray ? ($out, $err) : $out;
}
sub configure {
my $class = shift;
my %meta;
$wget = which('wget');
eval {
local $ENV{LC_ALL} = 'en_US';
$meta{$wget} = _run_wget('--version');
unless ($meta{$wget} =~ /GNU Wget 1\.(\d+)/ and $1 >= 12) {
die "Wget version is too old. $meta{$wget}";
}
my $config = $class->new(agent => __PACKAGE__);
my @options = grep { $_ ne '--quiet' } $config->build_options("GET");
my(undef, $err) = _run_wget(@options, 'https://');
if ($err && $err =~ /HTTPS support not compiled/) {
$supports{http} = 1;
} elsif ($err && $err =~ /Invalid host/) {
$supports{http} = $supports{https} = 1;
}
(undef, $err) = _run_wget('--method', 'GET', 'http://');
if ($err && $err =~ /Invalid host/) {
$method_supported = $meta{method_supported} = 1;
}
};
\%meta;
}
sub supports { $supports{$_[1]} }
sub new {
my($class, %attr) = @_;
bless \%attr, $class;
}
sub request {
my($self, $method, $url, $opts) = @_;
$opts ||= {};
my($stdout, $stderr);
eval {
run3 [
$wget,
$self->build_options($method, $url, $opts),
$url,
'-O', '-',
], \undef, \$stdout, \$stderr;
};
# wget exit codes: (man wget)
# 4 Network failure.
# 5 SSL verification failure.
# 6 Username/password authentication failure.
# 7 Protocol errors.
# 8 Server issued an error response.
if ($@ or $? && ($? >> 8) <= 5) {
return $self->internal_error($url, $@ || $stderr);
}
my $header = '';
$stderr =~ s{^ (\S.*)$}{ $header .= $1."\n" }gem;
my $res = { url => $url, content => $stdout };
$self->parse_http_header($header, $res);
$res;
}
sub mirror {
my($self, $url, $file, $opts) = @_;
$opts ||= {};
# This doesn't send If-Modified-Since because -O and -N are mutually exclusive :(
my($stdout, $stderr);
eval {
run3 [
$wget,
$self->build_options("GET", $url, $opts),
$url,
'-O', $file,
], \undef, \$stdout, \$stderr,
{
binmode_stdout => ":raw",
binmode_stderr => ":raw",
};
};
if ($@ or $?) {
return $self->internal_error($url, $@ || $stderr);
}
$stderr =~ s/^ //gm;
my $res = { url => $url, content => $stdout };
$self->parse_http_header($stderr, $res);
$res;
}
sub build_options {
my($self, $method, $url, $opts) = @_;
my @options = (
'--retry-connrefused',
'--server-response',
'--timeout', ($self->{timeout} || 60),
'--tries', 1,
'--max-redirect', (exists $self->{max_redirect} ? $self->{max_redirect} : 5),
'--user-agent', ($self->{agent} || "HTTP-Tinyish/$HTTP::Tinyish::VERSION"),
);
if ($method_supported) {
push @options, "--method", $method;
} else {
if ($method eq 'GET' or $method eq 'POST') {
# OK
} elsif ($method eq 'HEAD') {
push @options, '--spider';
} else {
die "This version of wget doesn't support specifying HTTP method '$method'";
}
}
if ($self->{agent}) {
push @options, '--user-agent', $self->{agent};
}
my %headers;
if ($self->{default_headers}) {
%headers = %{$self->{default_headers}};
}
if ($opts->{headers}) {
%headers = (%headers, %{$opts->{headers}});
}
$self->_translate_headers(\%headers, \@options);
if ($supports{https} && !$self->{verify_SSL}) {
push @options, '--no-check-certificate';
}
if ($opts->{content}) {
my $content;
if (ref $opts->{content} eq 'CODE') {
while (my $chunk = $opts->{content}->()) {
$content .= $chunk;
}
} else {
$content = $opts->{content};
}
if ($method_supported) {
push @options, '--body-data', $content;
} else {
push @options, '--post-data', $content;
}
}
@options;
}
sub _translate_headers {
my($self, $headers, $options) = @_;
for my $field (keys %$headers) {
my $value = $headers->{$field};
if (ref $value eq 'ARRAY') {
# wget doesn't honor multiple header fields
push @$options, '--header', "$field:" . join(",", @$value);
} else {
push @$options, '--header', "$field:$value";
}
}
}
1;
|
