line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
package LWP::Protocol::nntp; |
2
|
|
|
|
|
|
|
$LWP::Protocol::nntp::VERSION = '6.29'; |
3
|
|
|
|
|
|
|
# Implementation of the Network News Transfer Protocol (RFC 977) |
4
|
|
|
|
|
|
|
|
5
|
1
|
|
|
1
|
|
6
|
use base qw(LWP::Protocol); |
|
1
|
|
|
|
|
3
|
|
|
1
|
|
|
|
|
165
|
|
6
|
|
|
|
|
|
|
|
7
|
|
|
|
|
|
|
require HTTP::Response; |
8
|
|
|
|
|
|
|
require HTTP::Status; |
9
|
|
|
|
|
|
|
require Net::NNTP; |
10
|
|
|
|
|
|
|
|
11
|
1
|
|
|
1
|
|
6
|
use strict; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
553
|
|
12
|
|
|
|
|
|
|
|
13
|
|
|
|
|
|
|
|
14
|
|
|
|
|
|
|
sub request { |
15
|
1
|
|
|
1
|
1
|
6
|
my ($self, $request, $proxy, $arg, $size, $timeout) = @_; |
16
|
|
|
|
|
|
|
|
17
|
1
|
50
|
|
|
|
4
|
$size = 4096 unless $size; |
18
|
|
|
|
|
|
|
|
19
|
|
|
|
|
|
|
# Check for proxy |
20
|
1
|
50
|
|
|
|
3
|
if (defined $proxy) { |
21
|
0
|
|
|
|
|
0
|
return HTTP::Response->new(HTTP::Status::RC_BAD_REQUEST, |
22
|
|
|
|
|
|
|
'You can not proxy through NNTP'); |
23
|
|
|
|
|
|
|
} |
24
|
|
|
|
|
|
|
|
25
|
|
|
|
|
|
|
# Check that the scheme is as expected |
26
|
1
|
|
|
|
|
8
|
my $url = $request->uri; |
27
|
1
|
|
|
|
|
14
|
my $scheme = $url->scheme; |
28
|
1
|
50
|
33
|
|
|
32
|
unless ($scheme eq 'news' || $scheme eq 'nntp') { |
29
|
0
|
|
|
|
|
0
|
return HTTP::Response->new(HTTP::Status::RC_INTERNAL_SERVER_ERROR, |
30
|
|
|
|
|
|
|
"LWP::Protocol::nntp::request called for '$scheme'"); |
31
|
|
|
|
|
|
|
} |
32
|
|
|
|
|
|
|
|
33
|
|
|
|
|
|
|
# check for a valid method |
34
|
1
|
|
|
|
|
5
|
my $method = $request->method; |
35
|
1
|
0
|
33
|
|
|
18
|
unless ($method eq 'GET' || $method eq 'HEAD' || $method eq 'POST') { |
|
|
|
33
|
|
|
|
|
36
|
0
|
|
|
|
|
0
|
return HTTP::Response->new(HTTP::Status::RC_BAD_REQUEST, |
37
|
|
|
|
|
|
|
'Library does not allow method ' . "$method for '$scheme:' URLs"); |
38
|
|
|
|
|
|
|
} |
39
|
|
|
|
|
|
|
|
40
|
|
|
|
|
|
|
# extract the identifier and check against posting to an article |
41
|
1
|
|
|
|
|
13
|
my $groupart = $url->_group; |
42
|
1
|
|
|
|
|
49
|
my $is_art = $groupart =~ /@/; |
43
|
|
|
|
|
|
|
|
44
|
1
|
50
|
33
|
|
|
8
|
if ($is_art && $method eq 'POST') { |
45
|
0
|
|
|
|
|
0
|
return HTTP::Response->new(HTTP::Status::RC_BAD_REQUEST, |
46
|
|
|
|
|
|
|
"Can't post to an article <$groupart>"); |
47
|
|
|
|
|
|
|
} |
48
|
|
|
|
|
|
|
|
49
|
1
|
|
|
|
|
8
|
my $nntp = Net::NNTP->new( |
50
|
|
|
|
|
|
|
$url->host, |
51
|
|
|
|
|
|
|
|
52
|
|
|
|
|
|
|
#Port => 18574, |
53
|
|
|
|
|
|
|
Timeout => $timeout, |
54
|
|
|
|
|
|
|
|
55
|
|
|
|
|
|
|
#Debug => 1, |
56
|
|
|
|
|
|
|
); |
57
|
1
|
50
|
|
|
|
632673
|
die "Can't connect to nntp server" unless $nntp; |
58
|
|
|
|
|
|
|
|
59
|
|
|
|
|
|
|
# Check the initial welcome message from the NNTP server |
60
|
1
|
50
|
|
|
|
15
|
if ($nntp->status != 2) { |
61
|
0
|
|
|
|
|
0
|
return HTTP::Response->new(HTTP::Status::RC_SERVICE_UNAVAILABLE, |
62
|
|
|
|
|
|
|
$nntp->message); |
63
|
|
|
|
|
|
|
} |
64
|
1
|
|
|
|
|
29
|
my $response = HTTP::Response->new(HTTP::Status::RC_OK, "OK"); |
65
|
|
|
|
|
|
|
|
66
|
1
|
|
|
|
|
98
|
my $mess = $nntp->message; |
67
|
|
|
|
|
|
|
|
68
|
|
|
|
|
|
|
# Try to extract server name from greeting message. |
69
|
|
|
|
|
|
|
# Don't know if this works well for a large class of servers, but |
70
|
|
|
|
|
|
|
# this works for our server. |
71
|
1
|
|
|
|
|
19
|
$mess =~ s/\s+ready\b.*//; |
72
|
1
|
|
|
|
|
8
|
$mess =~ s/^\S+\s+//; |
73
|
1
|
|
|
|
|
20
|
$response->header(Server => $mess); |
74
|
|
|
|
|
|
|
|
75
|
|
|
|
|
|
|
# First we handle posting of articles |
76
|
1
|
50
|
|
|
|
133
|
if ($method eq 'POST') { |
77
|
0
|
|
|
|
|
0
|
$nntp->quit; |
78
|
0
|
|
|
|
|
0
|
$nntp = undef; |
79
|
0
|
|
|
|
|
0
|
$response->code(HTTP::Status::RC_NOT_IMPLEMENTED); |
80
|
0
|
|
|
|
|
0
|
$response->message("POST not implemented yet"); |
81
|
0
|
|
|
|
|
0
|
return $response; |
82
|
|
|
|
|
|
|
} |
83
|
|
|
|
|
|
|
|
84
|
|
|
|
|
|
|
# The method must be "GET" or "HEAD" by now |
85
|
1
|
50
|
|
|
|
7
|
if (!$is_art) { |
86
|
0
|
0
|
|
|
|
0
|
if (!$nntp->group($groupart)) { |
87
|
0
|
|
|
|
|
0
|
$response->code(HTTP::Status::RC_NOT_FOUND); |
88
|
0
|
|
|
|
|
0
|
$response->message($nntp->message); |
89
|
|
|
|
|
|
|
} |
90
|
0
|
|
|
|
|
0
|
$nntp->quit; |
91
|
0
|
|
|
|
|
0
|
$nntp = undef; |
92
|
|
|
|
|
|
|
|
93
|
|
|
|
|
|
|
# HEAD: just check if the group exists |
94
|
0
|
0
|
0
|
|
|
0
|
if ($method eq 'GET' && $response->is_success) { |
95
|
0
|
|
|
|
|
0
|
$response->code(HTTP::Status::RC_NOT_IMPLEMENTED); |
96
|
0
|
|
|
|
|
0
|
$response->message("GET newsgroup not implemented yet"); |
97
|
|
|
|
|
|
|
} |
98
|
0
|
|
|
|
|
0
|
return $response; |
99
|
|
|
|
|
|
|
} |
100
|
|
|
|
|
|
|
|
101
|
|
|
|
|
|
|
# Send command to server to retrieve an article (or just the headers) |
102
|
1
|
50
|
|
|
|
7
|
my $get = $method eq 'HEAD' ? "head" : "article"; |
103
|
1
|
|
|
|
|
9
|
my $art = $nntp->$get("<$groupart>"); |
104
|
1
|
50
|
|
|
|
149207
|
unless ($art) { |
105
|
1
|
|
|
|
|
8
|
$nntp->quit; |
106
|
1
|
|
|
|
|
148337
|
$response->code(HTTP::Status::RC_NOT_FOUND); |
107
|
1
|
|
|
|
|
30
|
$response->message($nntp->message); |
108
|
1
|
|
|
|
|
34
|
$nntp = undef; |
109
|
1
|
|
|
|
|
40
|
return $response; |
110
|
|
|
|
|
|
|
} |
111
|
|
|
|
|
|
|
|
112
|
|
|
|
|
|
|
# Parse headers |
113
|
0
|
|
|
|
|
|
my ($key, $val); |
114
|
0
|
|
|
|
|
|
local $_; |
115
|
0
|
|
|
|
|
|
while ($_ = shift @$art) { |
116
|
0
|
0
|
|
|
|
|
if (/^\s+$/) { |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
117
|
0
|
|
|
|
|
|
last; # end of headers |
118
|
|
|
|
|
|
|
} |
119
|
|
|
|
|
|
|
elsif (/^(\S+):\s*(.*)/) { |
120
|
0
|
0
|
|
|
|
|
$response->push_header($key, $val) if $key; |
121
|
0
|
|
|
|
|
|
($key, $val) = ($1, $2); |
122
|
|
|
|
|
|
|
} |
123
|
|
|
|
|
|
|
elsif (/^\s+(.*)/) { |
124
|
0
|
0
|
|
|
|
|
next unless $key; |
125
|
0
|
|
|
|
|
|
$val .= $1; |
126
|
|
|
|
|
|
|
} |
127
|
|
|
|
|
|
|
else { |
128
|
0
|
|
|
|
|
|
unshift(@$art, $_); |
129
|
0
|
|
|
|
|
|
last; |
130
|
|
|
|
|
|
|
} |
131
|
|
|
|
|
|
|
} |
132
|
0
|
0
|
|
|
|
|
$response->push_header($key, $val) if $key; |
133
|
|
|
|
|
|
|
|
134
|
|
|
|
|
|
|
# Ensure that there is a Content-Type header |
135
|
0
|
0
|
|
|
|
|
$response->header("Content-Type", "text/plain") |
136
|
|
|
|
|
|
|
unless $response->header("Content-Type"); |
137
|
|
|
|
|
|
|
|
138
|
|
|
|
|
|
|
# Collect the body |
139
|
0
|
0
|
|
|
|
|
$response = $self->collect_once($arg, $response, join("", @$art)) if @$art; |
140
|
|
|
|
|
|
|
|
141
|
|
|
|
|
|
|
# Say goodbye to the server |
142
|
0
|
|
|
|
|
|
$nntp->quit; |
143
|
0
|
|
|
|
|
|
$nntp = undef; |
144
|
|
|
|
|
|
|
|
145
|
0
|
|
|
|
|
|
$response; |
146
|
|
|
|
|
|
|
} |
147
|
|
|
|
|
|
|
|
148
|
|
|
|
|
|
|
1; |