| 1 | #! perl |
1 | #! perl |
| 2 | |
2 | |
| 3 | # untested dm support extension |
3 | use IO::Socket; |
| 4 | |
|
|
| 5 | use Storable qw/nfreeze thaw/; |
4 | use Storable qw/nfreeze thaw/; |
| 6 | |
5 | |
| 7 | my %global; # for use by eval'ed commands |
6 | my %global; # for use by eval'ed commands |
| 8 | |
7 | |
| 9 | cf::register_extcmd perl_eval => sub { |
8 | sub tcp_serve($) { |
| 10 | my ($pl, $data) = @_; |
9 | my ($fh) = @_; |
| 11 | |
10 | |
| 12 | my ($token, $data) = split / /, $data, 2; |
11 | binmode $fh, ":raw:perlio:utf8"; |
| 13 | |
12 | |
| 14 | unless ($pl->flag (cf::FLAG_WIZ)) { |
13 | my $buf; |
| 15 | $pl->send ("ext $token error permission denied"); |
14 | my ($a,$b,$c,$d,%l,@l); # for use by shell users |
| 16 | return; |
15 | |
|
|
16 | print $fh "Welcome\n> "; |
|
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17 | |
|
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18 | Event->io (fd => $fh, poll => 'r', data => cf::WF_AUTOCANCEL, cb => sub { |
|
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19 | if (defined (my $cmd = <$fh>)) { |
|
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20 | my $old_fh = select $fh; |
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21 | |
|
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22 | if ($cmd =~ /^\s*exit\b/i) { |
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23 | print "will not exit() server.\n"; |
|
|
24 | } else { |
|
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25 | { |
|
|
26 | package cf; |
|
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27 | eval $cmd; |
|
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28 | } |
|
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29 | print $@ if $@; |
|
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30 | } |
|
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31 | |
|
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32 | print "> "; |
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33 | select $old_fh; |
|
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34 | } else { |
|
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35 | $_[0]->w->cancel; |
|
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36 | } |
|
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37 | }); |
|
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38 | } |
|
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39 | |
|
|
40 | # now a shell listening on a tcp-port - let the firewall decide access rights |
|
|
41 | if ($cf::CFG{perl_shell}) { |
|
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42 | if (my $listen = new IO::Socket::INET LocalAddr => $cf::CFG{perl_shell}, Listen => 1, ReuseAddr => 1) { |
|
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43 | Event->io (fd => $listen, poll => 'r', data => cf::WF_AUTOCANCEL, cb => sub { tcp_serve $listen->accept }); |
| 17 | } |
44 | } |
| 18 | |
45 | } |
| 19 | my ($code, $arg) = split /\0/, $data, 2; |
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| 20 | |
|
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| 21 | $arg = eval { thaw $arg }; |
|
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| 22 | my @res = eval $code; |
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| 23 | |
|
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| 24 | $@ ? $pl->send ("ext $token error " . nfreeze $@) |
|
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| 25 | : $pl->send ("ext $token ok " . nfreeze \@res); |
|
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| 26 | }; |
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