1 # /DNS <nick>|<host>|<ip> ...
2 # for irssi 0.7.99 by Timo Sirainen
9 my (%resolve_hosts, %resolve_nicks, %resolve_print); # resolve queues
10 my $userhosts; # number of USERHOSTs currently waiting for reply
11 my $lookup_waiting; # 1 if we're waiting a reply for host lookup
13 # for the current host lookup
14 my ($print_server, $print_host, $print_name, @print_ips);
15 my ($input_skip_next, $input_query);
20 my ($nicks, $server) = @_;
23 # get list of nicks/hosts we want to know
24 my $tag = !$server ? undef : $server->{tag};
27 foreach my $nick (split(" ", $nicks)) {
28 if ($nick =~ /[\.:]/) {
29 # it's an IP or hostname
30 $resolve_hosts{$nick} = $tag;
33 if (!$print_error && (!$server || !$server->{connected})) {
35 Irssi::print("Not connected to server");
37 $resolve_nicks{$nick} = 1;
38 $ask_nicks .= "$nick ";
43 if ($ask_nicks ne "") {
44 # send the USERHOST query
46 $server->redirect_event('userhost', 1, $ask_nicks, 0, 'redir dns failure', {
47 'event 302' => 'redir dns host',
48 '' => 'event empty' } );
49 $server->send_raw("USERHOST :$nicks");
52 # ask the IPs/hostnames immediately
53 host_lookup() if (!$lookup_waiting);
57 Irssi::print("Error getting hostname for nick");
58 %resolve_nicks = () if (--$userhosts == 0);
62 my ($server, $data) = @_;
63 $data =~ s/^[^ ]* :?//;
64 my @hosts = split(/ +/, $data);
66 # move resolve_nicks -> resolve_hosts
67 foreach my $host (@hosts) {
68 if ($host =~ /^([^=\*]*)\*?=.(.*)@(.*)/) {
73 $resolve_hosts{$host} = $resolve_nicks{$nick};
74 delete $resolve_nicks{$nick};
75 $resolve_print{$host} = "[$nick!$user"."@"."$host]";
79 if (--$userhosts == 0 && %resolve_nicks) {
80 # unknown nicks - they didn't contain . or : so it can't be
82 Irssi::print("Unknown nicks: ".join(' ', keys %resolve_nicks));
86 host_lookup() if (!$lookup_waiting);
90 return if (!%resolve_hosts);
92 my ($host) = keys %resolve_hosts;
93 $print_server = $resolve_hosts{$host};
96 $print_name = $resolve_print{$host};
99 delete $resolve_hosts{$host};
100 delete $resolve_print{$host};
102 $input_query = $host;
103 $input_skip_next = 0;
105 # pipe is used to get the reply from child
109 # non-blocking host lookups with fork()ing
111 if (!defined($pid)) {
114 Irssi::print("Can't fork() - aborting");
115 close($rh); close($wh);
121 # parent, wait for reply
123 Irssi::pidwait_add($pid);
124 $pipe_tag = Irssi::input_add(fileno($rh), INPUT_READ, \&pipe_input, $rh);
130 # child, do the lookup
132 if ($host =~ /^[0-9\.]*$/) {
134 $name = gethostbyaddr(inet_aton($host), AF_INET);
137 my @addrs = gethostbyname($host);
139 @addrs = map { inet_ntoa($_) } @addrs[4 .. $#addrs];
140 $name = join (" ", @addrs);
144 $print_name = $input_query if !$print_name;
146 $text = "No information for $print_name";
148 $text = "$print_name: $name";
151 $text = $! if (!$text);
166 Irssi::input_remove($pipe_tag);
169 my $server = Irssi::server_find_tag($print_server);
171 $server->print('', $text);
180 Irssi::command_bind('dns', 'cmd_dns');
182 'redir dns failure' => \&sig_failure,
183 'redir dns host' => \&sig_userhost } );