Mass Deface
new() : undef;
sub toebcdic {
my $cmd = shift;
unless (exists ${*$cmd}{'net_cmd_asciipeer'}) {
my $string = $_[0];
my $ebcdicstr = $tr->toebcdic($string);
${*$cmd}{'net_cmd_asciipeer'} = $string !~ /^\d+/ && $ebcdicstr =~ /^\d+/;
}
${*$cmd}{'net_cmd_asciipeer'}
? $tr->toebcdic($_[0])
: $_[0];
}
sub toascii {
my $cmd = shift;
${*$cmd}{'net_cmd_asciipeer'}
? $tr->toascii($_[0])
: $_[0];
}
sub _print_isa {
no strict qw(refs);
my $pkg = shift;
my $cmd = $pkg;
$debug{$pkg} ||= 0;
my %done = ();
my @do = ($pkg);
my %spc = ($pkg, "");
while ($pkg = shift @do) {
next if defined $done{$pkg};
$done{$pkg} = 1;
my $v =
defined ${"${pkg}::VERSION"}
? "(" . ${"${pkg}::VERSION"} . ")"
: "";
my $spc = $spc{$pkg};
$cmd->debug_print(1, "${spc}${pkg}${v}\n");
if (@{"${pkg}::ISA"}) {
@spc{@{"${pkg}::ISA"}} = (" " . $spc{$pkg}) x @{"${pkg}::ISA"};
unshift(@do, @{"${pkg}::ISA"});
}
}
}
sub debug {
@_ == 1 or @_ == 2 or croak 'usage: $obj->debug([LEVEL])';
my ($cmd, $level) = @_;
my $pkg = ref($cmd) || $cmd;
my $oldval = 0;
if (ref($cmd)) {
$oldval = ${*$cmd}{'net_cmd_debug'} || 0;
}
else {
$oldval = $debug{$pkg} || 0;
}
return $oldval
unless @_ == 2;
$level = $debug{$pkg} || 0
unless defined $level;
_print_isa($pkg)
if ($level && !exists $debug{$pkg});
if (ref($cmd)) {
${*$cmd}{'net_cmd_debug'} = $level;
}
else {
$debug{$pkg} = $level;
}
$oldval;
}
sub message {
@_ == 1 or croak 'usage: $obj->message()';
my $cmd = shift;
wantarray
? @{${*$cmd}{'net_cmd_resp'}}
: join("", @{${*$cmd}{'net_cmd_resp'}});
}
sub debug_text { $_[2] }
sub debug_print {
my ($cmd, $out, $text) = @_;
print STDERR $cmd, ($out ? '>>> ' : '<<< '), $cmd->debug_text($out, $text);
}
sub code {
@_ == 1 or croak 'usage: $obj->code()';
my $cmd = shift;
${*$cmd}{'net_cmd_code'} = "000"
unless exists ${*$cmd}{'net_cmd_code'};
${*$cmd}{'net_cmd_code'};
}
sub status {
@_ == 1 or croak 'usage: $obj->status()';
my $cmd = shift;
substr(${*$cmd}{'net_cmd_code'}, 0, 1);
}
sub set_status {
@_ == 3 or croak 'usage: $obj->set_status(CODE, MESSAGE)';
my $cmd = shift;
my ($code, $resp) = @_;
$resp = [$resp]
unless ref($resp);
(${*$cmd}{'net_cmd_code'}, ${*$cmd}{'net_cmd_resp'}) = ($code, $resp);
1;
}
sub command {
my $cmd = shift;
unless (defined fileno($cmd)) {
$cmd->set_status("599", "Connection closed");
return $cmd;
}
$cmd->dataend()
if (exists ${*$cmd}{'net_cmd_last_ch'});
if (scalar(@_)) {
local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
my $str = join(
" ",
map {
/\n/
? do { my $n = $_; $n =~ tr/\n/ /; $n }
: $_;
} @_
);
$str = $cmd->toascii($str) if $tr;
$str .= "\015\012";
my $len = length $str;
my $swlen;
$cmd->close
unless (defined($swlen = syswrite($cmd, $str, $len)) && $swlen == $len);
$cmd->debug_print(1, $str)
if ($cmd->debug);
${*$cmd}{'net_cmd_resp'} = []; # the response
${*$cmd}{'net_cmd_code'} = "000"; # Made this one up :-)
}
$cmd;
}
sub ok {
@_ == 1 or croak 'usage: $obj->ok()';
my $code = $_[0]->code;
0 < $code && $code < 400;
}
sub unsupported {
my $cmd = shift;
${*$cmd}{'net_cmd_resp'} = ['Unsupported command'];
${*$cmd}{'net_cmd_code'} = 580;
0;
}
sub getline {
my $cmd = shift;
${*$cmd}{'net_cmd_lines'} ||= [];
return shift @{${*$cmd}{'net_cmd_lines'}}
if scalar(@{${*$cmd}{'net_cmd_lines'}});
my $partial = defined(${*$cmd}{'net_cmd_partial'}) ? ${*$cmd}{'net_cmd_partial'} : "";
my $fd = fileno($cmd);
return undef
unless defined $fd;
my $rin = "";
vec($rin, $fd, 1) = 1;
my $buf;
until (scalar(@{${*$cmd}{'net_cmd_lines'}})) {
my $timeout = $cmd->timeout || undef;
my $rout;
my $select_ret = select($rout = $rin, undef, undef, $timeout);
if ($select_ret > 0) {
unless (sysread($cmd, $buf = "", 1024)) {
carp(ref($cmd) . ": Unexpected EOF on command channel")
if $cmd->debug;
$cmd->close;
return undef;
}
substr($buf, 0, 0) = $partial; ## prepend from last sysread
my @buf = split(/\015?\012/, $buf, -1); ## break into lines
$partial = pop @buf;
push(@{${*$cmd}{'net_cmd_lines'}}, map {"$_\n"} @buf);
}
else {
my $msg = $select_ret ? "Error or Interrupted: $!" : "Timeout";
carp("$cmd: $msg") if ($cmd->debug);
return undef;
}
}
${*$cmd}{'net_cmd_partial'} = $partial;
if ($tr) {
foreach my $ln (@{${*$cmd}{'net_cmd_lines'}}) {
$ln = $cmd->toebcdic($ln);
}
}
shift @{${*$cmd}{'net_cmd_lines'}};
}
sub ungetline {
my ($cmd, $str) = @_;
${*$cmd}{'net_cmd_lines'} ||= [];
unshift(@{${*$cmd}{'net_cmd_lines'}}, $str);
}
sub parse_response {
return ()
unless $_[1] =~ s/^(\d\d\d)(.?)//o;
($1, $2 eq "-");
}
sub response {
my $cmd = shift;
my ($code, $more) = (undef) x 2;
${*$cmd}{'net_cmd_resp'} ||= [];
while (1) {
my $str = $cmd->getline();
return CMD_ERROR
unless defined($str);
$cmd->debug_print(0, $str)
if ($cmd->debug);
($code, $more) = $cmd->parse_response($str);
unless (defined $code) {
$cmd->ungetline($str);
last;
}
${*$cmd}{'net_cmd_code'} = $code;
push(@{${*$cmd}{'net_cmd_resp'}}, $str);
last unless ($more);
}
substr($code, 0, 1);
}
sub read_until_dot {
my $cmd = shift;
my $fh = shift;
my $arr = [];
while (1) {
my $str = $cmd->getline() or return undef;
$cmd->debug_print(0, $str)
if ($cmd->debug & 4);
last if ($str =~ /^\.\r?\n/o);
$str =~ s/^\.\././o;
if (defined $fh) {
print $fh $str;
}
else {
push(@$arr, $str);
}
}
$arr;
}
sub datasend {
my $cmd = shift;
my $arr = @_ == 1 && ref($_[0]) ? $_[0] : \@_;
my $line = join("", @$arr);
# encode to individual utf8 bytes if
# $line is a string (in internal UTF-8)
utf8::encode($line) if is_utf8($line);
return 0 unless defined(fileno($cmd));
my $last_ch = ${*$cmd}{'net_cmd_last_ch'};
$last_ch = ${*$cmd}{'net_cmd_last_ch'} = "\012" unless defined $last_ch;
return 1 unless length $line;
if ($cmd->debug) {
foreach my $b (split(/\n/, $line)) {
$cmd->debug_print(1, "$b\n");
}
}
$line =~ tr/\r\n/\015\012/ unless "\r" eq "\015";
my $first_ch = '';
if ($last_ch eq "\015") {
$first_ch = "\012" if $line =~ s/^\012//;
}
elsif ($last_ch eq "\012") {
$first_ch = "." if $line =~ /^\./;
}
$line =~ s/\015?\012(\.?)/\015\012$1$1/sg;
substr($line, 0, 0) = $first_ch;
${*$cmd}{'net_cmd_last_ch'} = substr($line, -1, 1);
my $len = length($line);
my $offset = 0;
my $win = "";
vec($win, fileno($cmd), 1) = 1;
my $timeout = $cmd->timeout || undef;
local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
while ($len) {
my $wout;
my $s = select(undef, $wout = $win, undef, $timeout);
if ((defined $s and $s > 0) or -f $cmd) # -f for testing on win32
{
my $w = syswrite($cmd, $line, $len, $offset);
unless (defined($w)) {
carp("$cmd: $!") if $cmd->debug;
return undef;
}
$len -= $w;
$offset += $w;
}
else {
carp("$cmd: Timeout") if ($cmd->debug);
return undef;
}
}
1;
}
sub rawdatasend {
my $cmd = shift;
my $arr = @_ == 1 && ref($_[0]) ? $_[0] : \@_;
my $line = join("", @$arr);
return 0 unless defined(fileno($cmd));
return 1
unless length($line);
if ($cmd->debug) {
my $b = "$cmd>>> ";
print STDERR $b, join("\n$b", split(/\n/, $line)), "\n";
}
my $len = length($line);
my $offset = 0;
my $win = "";
vec($win, fileno($cmd), 1) = 1;
my $timeout = $cmd->timeout || undef;
local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
while ($len) {
my $wout;
if (select(undef, $wout = $win, undef, $timeout) > 0) {
my $w = syswrite($cmd, $line, $len, $offset);
unless (defined($w)) {
carp("$cmd: $!") if $cmd->debug;
return undef;
}
$len -= $w;
$offset += $w;
}
else {
carp("$cmd: Timeout") if ($cmd->debug);
return undef;
}
}
1;
}
sub dataend {
my $cmd = shift;
return 0 unless defined(fileno($cmd));
my $ch = ${*$cmd}{'net_cmd_last_ch'};
my $tosend;
if (!defined $ch) {
return 1;
}
elsif ($ch ne "\012") {
$tosend = "\015\012";
}
$tosend .= ".\015\012";
local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
$cmd->debug_print(1, ".\n")
if ($cmd->debug);
syswrite($cmd, $tosend, length $tosend);
delete ${*$cmd}{'net_cmd_last_ch'};
$cmd->response() == CMD_OK;
}
# read and write to tied filehandle
sub tied_fh {
my $cmd = shift;
${*$cmd}{'net_cmd_readbuf'} = '';
my $fh = gensym();
tie *$fh, ref($cmd), $cmd;
return $fh;
}
# tie to myself
sub TIEHANDLE {
my $class = shift;
my $cmd = shift;
return $cmd;
}
# Tied filehandle read. Reads requested data length, returning
# end-of-file when the dot is encountered.
sub READ {
my $cmd = shift;
my ($len, $offset) = @_[1, 2];
return unless exists ${*$cmd}{'net_cmd_readbuf'};
my $done = 0;
while (!$done and length(${*$cmd}{'net_cmd_readbuf'}) < $len) {
${*$cmd}{'net_cmd_readbuf'} .= $cmd->getline() or return;
$done++ if ${*$cmd}{'net_cmd_readbuf'} =~ s/^\.\r?\n\Z//m;
}
$_[0] = '';
substr($_[0], $offset + 0) = substr(${*$cmd}{'net_cmd_readbuf'}, 0, $len);
substr(${*$cmd}{'net_cmd_readbuf'}, 0, $len) = '';
delete ${*$cmd}{'net_cmd_readbuf'} if $done;
return length $_[0];
}
sub READLINE {
my $cmd = shift;
# in this context, we use the presence of readbuf to
# indicate that we have not yet reached the eof
return unless exists ${*$cmd}{'net_cmd_readbuf'};
my $line = $cmd->getline;
return if $line =~ /^\.\r?\n/;
$line;
}
sub PRINT {
my $cmd = shift;
my ($buf, $len, $offset) = @_;
$len ||= length($buf);
$offset += 0;
return unless $cmd->datasend(substr($buf, $offset, $len));
${*$cmd}{'net_cmd_sending'}++; # flag that we should call dataend()
return $len;
}
sub CLOSE {
my $cmd = shift;
my $r = exists(${*$cmd}{'net_cmd_sending'}) ? $cmd->dataend : 1;
delete ${*$cmd}{'net_cmd_readbuf'};
delete ${*$cmd}{'net_cmd_sending'};
$r;
}
1;
__END__
=head1 NAME
Net::Cmd - Network Command class (as used by FTP, SMTP etc)
=head1 SYNOPSIS
use Net::Cmd;
@ISA = qw(Net::Cmd);
=head1 DESCRIPTION
C