7 use Exporter qw{import};
8 use Socket qw{:DEFAULT :addrinfo};
10 our @EXPORT_OK = qw{get_response0 decode_response get_response
11 send_command0 send_command
17 sub split_response_code ($) {
19 my $c = $st%10; $st = int($st/10);
20 my $b = $st%10; $st = int($st/10);
25 sub get_response0 ($) {
27 (my $st, my $r) = split ' ', (readline $sk), 2;
30 my ($a, $b, $c) = split_response_code $st;
32 if ($c == 5) { return $st, undef; }
33 else { die "server error: $r"; }
35 elsif ($a != 2) { die "unexpected status code $a"; }
36 else { return $st, $r; }
39 sub decode_response ($$$) {
40 my ($sk, $st, $r) = @_;
41 my ($a, $b, $c) = split_response_code $st;
43 if ($c == 0 || $c == 5 || $c == 9) { return undef; }
44 elsif ($c == 1 || $c == 2) { return $r; }
48 chomp (my $line = readline $sk);
49 last LINE if $line eq ".";
54 } else { die "unexpected format code $c in $st"; }
57 sub get_response ($) {
59 my ($st, $r) = get_response0 $sk;
60 return decode_response $sk, $st, $r;
63 sub send_command0 ($@) {
68 if ($f eq "" || $f =~ /[\\"'\s]/) {
69 $f =~ s/([\\"])/\\$1/g;
76 return get_response0 $sk;
79 sub send_command ($@) {
81 my ($st, $r) = send_command0 $sk, @f;
82 return decode_response $sk, $st, $r;
85 sub split_fields ($) {
92 last FIELD if $l eq "";
93 if ($l =~ /^(["'])/) {
95 ($f, $l) = $l =~ /^ $q ((?: [^\\$q]+ | \\ .)* ) $q (.*) $/x;
98 ($f, $l) = split ' ', $l, 2; $l //= "";
105 sub connect_to_server ($;$) {
106 my ($conf, $quietp) = @_;
107 my %conf = (connect => ["-unix", "/var/lib/disorder/socket"]);
110 open my $fh, "<", $conf;
111 LINE: while (<$fh>) {
113 next LINE unless /^\s*[^\s#]/;
114 (my $k, my @f) = split;
118 for my $i (qw{ username password })
119 { die "missing configuration keyword `$i'" unless exists $conf{$i}; }
122 my @a = $conf{connect}->@*;
123 die "empty address" unless @a;
124 if ($a[0] eq "-unix") { $af = AF_UNIX; shift @a; }
125 elsif ($a[0] eq "-4") { $af = AF_INET; shift @a; }
126 elsif ($a[0] eq "-6") { $af = AF_INET6; shift @a; }
127 elsif ($a[0] eq "-") { shift @a; }
128 die "empty address" unless @a;
132 if ($af == AF_UNIX || ($af == AF_UNSPEC && $a[0] =~ m{^/})) {
133 @i = ({ family => AF_UNIX, addr => pack_sockaddr_un($a[0]) });
136 die "missing port" unless @a >= 2;
137 (my $e, @i) = getaddrinfo $a[0], $a[1],
138 { family => $af, socktype => SOCK_STREAM };
139 die "getaddrinfo (host `$a[0]', service `$a[1]'): $e" if $e;
142 die "junk in address" if @a;
146 ADDR: for my $i (@i) {
148 socket $sk, $i->{family}, SOCK_STREAM, 0;
149 connect $sk, $i->{addr};
152 close $sk if defined $sk;
157 unless (defined $sk) {
158 die "failed to connect" if $quietp;
159 print STDERR "failed to connect!\n";
160 for (my $i = 0; $i < @i; $i++) {
161 if ($i[$i]{family} == AF_UNIX)
162 { $a = unpack_sockaddr_un $i[$i]{addr}; }
164 my ($e, $host, $svc) = getnameinfo $i[$i]{addr},
165 NI_NUMERICHOST | NI_NUMERICSERV;
166 die "getnameinfo: $e" if $e;
167 $a = $host . ":" . $svc;
169 print STDERR "\t$a: $e[$i]\n";
175 @f = split_fields get_response $sk;
176 die "expected version 2" unless $f[0] eq "2";
177 my $h = Digest::SHA->new($f[1]);
178 $h->add($conf{password}[0], pack "H*", $f[2]);
179 my $d = $h->hexdigest;
180 send_command $sk, "user", $conf{username}[0], $d;