xref: /openbsd/usr.sbin/pkg_add/OpenBSD/Temp.pm (revision 404b540a) 
1# ex:ts=8 sw=4:
2# $OpenBSD: Temp.pm,v 1.14 2009/04/19 14:58:32 espie Exp $
3#
4# Copyright (c) 2003-2005 Marc Espie <espie@openbsd.org>
5#
6# Permission to use, copy, modify, and distribute this software for any
7# purpose with or without fee is hereby granted, provided that the above
8# copyright notice and this permission notice appear in all copies.
9#
10# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18use strict;
19use warnings;
20package OpenBSD::Temp;
21
22use File::Temp;
23use OpenBSD::Paths;
24
25our $tempbase = $ENV{'PKG_TMPDIR'} || OpenBSD::Paths->vartmp;
26
27my $dirs = {};
28my $files = {};
29
30sub cleanup
31{
32	my $caught;
33	my $h = sub { $caught = shift; };
34	{
35	    require File::Path;
36
37	    local $SIG{'INT'} = $h;
38	    local $SIG{'QUIT'} = $h;
39	    local $SIG{'HUP'} = $h;
40	    local $SIG{'KILL'} = $h;
41	    local $SIG{'TERM'} = $h;
42
43	    while (my ($name, $pid) = each %$files) {
44		    unlink($name) if $pid == $$;
45	    }
46	    while (my ($dir, $pid) = each %$dirs) {
47		    File::Path::rmtree([$dir]) if $pid == $$;
48	    }
49	}
50	if (defined $caught) {
51		kill $caught, $$;
52	}
53}
54
55END {
56	cleanup();
57}
58
59my $handler = sub {
60	my ($sig) = @_;
61	cleanup();
62	$SIG{$sig} = 'DEFAULT';
63	kill $sig, $$;
64};
65
66$SIG{'INT'} = $handler;
67$SIG{'QUIT'} = $handler;
68$SIG{'HUP'} = $handler;
69$SIG{'KILL'} = $handler;
70$SIG{'TERM'} = $handler;
71
72sub dir
73{
74	my $caught;
75	my $h = sub { $caught = shift; };
76	my $dir;
77
78	{
79	    local $SIG{'INT'} = $h;
80	    local $SIG{'QUIT'} = $h;
81	    local $SIG{'HUP'} = $h;
82	    local $SIG{'KILL'} = $h;
83	    local $SIG{'TERM'} = $h;
84	    $dir = permanent_dir($tempbase, "pkginfo");
85	    $dirs->{$dir} = $$;
86	}
87	if (defined $caught) {
88		kill $caught, $$;
89	}
90	return "$dir/";
91}
92
93sub file
94{
95	my $caught;
96	my $h = sub { $caught = shift; };
97	my ($fh, $file);
98
99	{
100	    local $SIG{'INT'} = $h;
101	    local $SIG{'QUIT'} = $h;
102	    local $SIG{'HUP'} = $h;
103	    local $SIG{'KILL'} = $h;
104	    local $SIG{'TERM'} = $h;
105	    ($fh, $file) = permanent_file($tempbase, "pkgout");
106	    $files->{$file} = $$;
107	}
108	if (defined $caught) {
109		kill $caught, $$;
110	}
111	return $file;
112}
113
114sub permanent_file
115{
116	my ($dir, $stem) = @_;
117	my $template = "$stem.XXXXXXXXXX";
118	if (defined $dir) {
119		$template = "$dir/$template";
120	}
121	return File::Temp::mkstemp($template);
122}
123
124sub permanent_dir
125{
126	my ($dir, $stem) = @_;
127	my $template = "$stem.XXXXXXXXXX";
128	if (defined $dir) {
129		$template = "$dir/$template";
130	}
131	return File::Temp::mkdtemp($template);
132}
133
1341;
135