Annotation 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	niro	144	#!/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