Contents of /trunk/file-roller/rpm2cpio-file-roller

#!/usr/bin/perl

# Copyright (C) 1997,1998,1999, Roger Espel Llima
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and any associated documentation files (the "Software"), to 
# deal in the Software without restriction, including without limitation the 
# rights to use, copy, modify, merge, publish, distribute, sublicense, 
# and/or sell copies of the Software, and to permit persons to whom the 
# Software is furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# SOFTWARE'S COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE

# (whew, that's done!)

# why does the world need another rpm2cpio?  because the existing one
# won't build unless you have half a ton of things that aren't really
# required for it, since it uses the same library used to extract RPM's.
# in particular, it won't build on the HPsUX box i'm on.


# add a path if desired
$gzip = "gzip";

sub printhelp {
  print "rpm2cpio, perl version by orabidoo <odar\@pobox.com>\n";
  print "use: rpm2cpio [file.rpm]\n";
  print "dumps the contents to stdout as a GNU cpio archive\n";
  exit 0;
}

if ($#ARGV == -1) {
  printhelp if -t STDIN;
  $f = "STDIN";
} elsif ($#ARGV == 0) {
  open(F, "< $ARGV[0]") or die "Can't read file $ARGV[0]\n";
  $f = 'F';
} else {
  printhelp;
}

printhelp if -t STDOUT;

# gobble the file up
undef $/;
$|=1;
$rpm = <$f>;
close ($f);

($magic, $major, $minor, $crap) = unpack("NCC C90", $rpm);

die "Not an RPM\n" if $magic != 0xedabeedb;
die "Not a version 3 RPM\n" if $major != 3;

$rpm = substr($rpm, 96);

while ($rpm ne '') {
  $rpm =~ s/^\c@*//s;
  ($magic, $crap, $sections, $bytes) = unpack("N4", $rpm);
  $smagic = unpack("n", $rpm);
  last if $smagic eq 0x1f8b;
  die "Error: header not recognized\n" if $magic != 0x8eade801;
  $rpm = substr($rpm, 16*(1+$sections) + $bytes);
}

die "bogus RPM\n" if $rpm eq '';

open(ZCAT, "|gzip -cd") || die "can't pipe to gzip\n";
print STDERR "CPIO archive found!\n";

print ZCAT $rpm;
close ZCAT;

1	#!/usr/bin/perl
2
3	# Copyright (C) 1997,1998,1999, Roger Espel Llima
4	#
5	# Permission is hereby granted, free of charge, to any person obtaining a copy
6	# of this software and any associated documentation files (the "Software"), to
7	# deal in the Software without restriction, including without limitation the
8	# rights to use, copy, modify, merge, publish, distribute, sublicense,
9	# and/or sell copies of the Software, and to permit persons to whom the
10	# Software is furnished to do so, subject to the following conditions:
11	#
12	# The above copyright notice and this permission notice shall be included in
13	# all copies or substantial portions of the Software.
14	#
15	# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16	# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17	# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18	# SOFTWARE'S COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19	# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20	# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21	# THE SOFTWARE
22
23	# (whew, that's done!)
24
25	# why does the world need another rpm2cpio? because the existing one
26	# won't build unless you have half a ton of things that aren't really
27	# required for it, since it uses the same library used to extract RPM's.
28	# in particular, it won't build on the HPsUX box i'm on.
29
30
31	# add a path if desired
32	$gzip = "gzip";
33
34	sub printhelp {
35	print "rpm2cpio, perl version by orabidoo <odar\@pobox.com>\n";
36	print "use: rpm2cpio [file.rpm]\n";
37	print "dumps the contents to stdout as a GNU cpio archive\n";
38	exit 0;
39	}
40
41	if ($#ARGV == -1) {
42	printhelp if -t STDIN;
43	$f = "STDIN";
44	} elsif ($#ARGV == 0) {
45	open(F, "< $ARGV[0]") or die "Can't read file $ARGV[0]\n";
46	$f = 'F';
47	} else {
48	printhelp;
49	}
50
51	printhelp if -t STDOUT;
52
53	# gobble the file up
54	undef $/;
55	$\|=1;
56	$rpm = <$f>;
57	close ($f);
58
59	($magic, $major, $minor, $crap) = unpack("NCC C90", $rpm);
60
61	die "Not an RPM\n" if $magic != 0xedabeedb;
62	die "Not a version 3 RPM\n" if $major != 3;
63
64	$rpm = substr($rpm, 96);
65
66	while ($rpm ne '') {
67	$rpm =~ s/^\c@*//s;
68	($magic, $crap, $sections, $bytes) = unpack("N4", $rpm);
69	$smagic = unpack("n", $rpm);
70	last if $smagic eq 0x1f8b;
71	die "Error: header not recognized\n" if $magic != 0x8eade801;
72	$rpm = substr($rpm, 16*(1+$sections) + $bytes);
73	}
74
75	die "bogus RPM\n" if $rpm eq '';
76
77	open(ZCAT, "\|gzip -cd") \|\| die "can't pipe to gzip\n";
78	print STDERR "CPIO archive found!\n";
79
80	print ZCAT $rpm;
81	close ZCAT;
82