server/ext/dm-support.ext

#! perl

use IO::Socket;
use Storable qw/nfreeze thaw/;

my %global; # for use by eval'ed commands

sub tcp_serve($) {
   my ($fh) = @_;

   select $fh;

   binmode $fh, ":raw:perlio:utf8";

   my $buf;
   my ($a, $b, $c, $d, $e, $f, $g, $h, $i, $j, $k, $l, $m, $n, $o, $p, $q, $r, $s, $t, $u, $v, $w, $x, $y, $z);
   my (%l, @l); # for use by shell users

   print <<EOF;
Welcome!
Remember that everything entered here will be in the main coro context within cf::!
You can freely use \$a .. \$z and \@l and \%l

Useful commands (note the '&'):

reload_perl &
reload_regions &
reload_facedata &
reload_treasures &
reload_archetypes &
EOF
   print "\n> ";

   Event->io (fd => $fh, poll => 'r', data => 0, cb => sub {
      if (defined (my $cmd = <$fh>)) {
         $cmd =~ s/\s+$//;

         if ($cmd =~ /^\s*exit\b/i) {
            print "will not exit() server.\n";
         } else {
            my $sub = sub {
               package cf;
               select $fh;

               # compile first, the execute, as Coro does not support switching in eval string
               my $cb = eval "sub { $cmd }";

               my $t1 = Time::HiRes::time;
               my @res = $@ ? () : eval { $cb->() };
               my $t2 = Time::HiRes::time;

               print "\n",
                     "command: '$cmd'\n",
                     "execution time: ", $t2 - $t1, "\n";
               warn "evaluation error: $@" if $@;
               print "evaluation error: $@\n" if $@;
               print "result:\n", cf::dumpval @res > 1 ? \@res : $res[0] if @res;
               print "\n> ";
            };

            if ($cmd =~ s/\s*&$//) {
               Coro::async_pool { $sub->() };
            } else {
               $sub->();
            }
         }

         print "\n> ";
      } else {
         $_[0]->w->cancel;
      }
   });
}

# now a shell listening on a tcp-port - let the firewall decide access rights
if ($cf::CFG{perl_shell}) {
   if (my $listen = new IO::Socket::INET LocalAddr => $cf::CFG{perl_shell}, Listen => 1, ReuseAddr => 1) {
      Event->io (fd => $listen, poll => 'r', data => cf::WF_AUTOCANCEL, cb => sub { tcp_serve $listen->accept });
   }
}
Revision:	1.4
Committed:	Tue Apr 17 10:38:28 2007 UTC (17 years, 1 month ago) by root
Branch:	MAIN
Changes since 1.3:	+42 -12 lines
Log Message:	- rename load_xxx to reload_xxx, all of which are guarenteed to a) do their thing b) take no parameters c) almost certainly fail when not run asynchronously - considerably improve dmshell (and support postfix-'&' to move job in bg) example data and execution times on my system: reload_regions 0.0007s reload_facedata 0.69s reload_treasures 0.0156s reload_archetypes 0.035s all of them run without impeding the running server (unless the server starts to use e.g. an archetype refering another archetype not yet defined), exccept for reload_perl, which is very heavy.
#	Content
1	#! perl
2
3	use IO::Socket;
4	use Storable qw/nfreeze thaw/;
5
6	my %global; # for use by eval'ed commands
7
8	sub tcp_serve($) {
9	my ($fh) = @_;
10
11	select $fh;
12
13	binmode $fh, ":raw:perlio:utf8";
14
15	my $buf;
16	my ($a, $b, $c, $d, $e, $f, $g, $h, $i, $j, $k, $l, $m, $n, $o, $p, $q, $r, $s, $t, $u, $v, $w, $x, $y, $z);
17	my (%l, @l); # for use by shell users
18
19	print <<EOF;
20	Welcome!
21	Remember that everything entered here will be in the main coro context within cf::!
22	You can freely use \$a .. \$z and \@l and \%l
23
24	Useful commands (note the '&'):
25
26	reload_perl &
27	reload_regions &
28	reload_facedata &
29	reload_treasures &
30	reload_archetypes &
31	EOF
32	print "\n> ";
33
34	Event->io (fd => $fh, poll => 'r', data => 0, cb => sub {
35	if (defined (my $cmd = <$fh>)) {
36	$cmd =~ s/\s+$//;
37
38	if ($cmd =~ /^\s*exit\b/i) {
39	print "will not exit() server.\n";
40	} else {
41	my $sub = sub {
42	package cf;
43	select $fh;
44
45	# compile first, the execute, as Coro does not support switching in eval string
46	my $cb = eval "sub { $cmd }";
47
48	my $t1 = Time::HiRes::time;
49	my @res = $@ ? () : eval { $cb->() };
50	my $t2 = Time::HiRes::time;
51
52	print "\n",
53	"command: '$cmd'\n",
54	"execution time: ", $t2 - $t1, "\n";
55	warn "evaluation error: $@" if $@;
56	print "evaluation error: $@\n" if $@;
57	print "result:\n", cf::dumpval @res > 1 ? \@res : $res[0] if @res;
58	print "\n> ";
59	};
60
61	if ($cmd =~ s/\s*&$//) {
62	Coro::async_pool { $sub->() };
63	} else {
64	$sub->();
65	}
66	}
67
68	print "\n> ";
69	} else {
70	$_[0]->w->cancel;
71	}
72	});
73	}
74
75	# now a shell listening on a tcp-port - let the firewall decide access rights
76	if ($cf::CFG{perl_shell}) {
77	if (my $listen = new IO::Socket::INET LocalAddr => $cf::CFG{perl_shell}, Listen => 1, ReuseAddr => 1) {
78	Event->io (fd => $listen, poll => 'r', data => cf::WF_AUTOCANCEL, cb => sub { tcp_serve $listen->accept });
79	}
80	}