Annotation of /trunk/file-roller/rpm2cpio-file-roller
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Revision 144 -
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Tue May 8 20:06:05 2007 UTC (17 years, 5 months ago) by niro
File size: 2556 byte(s)
Tue May 8 20:06:05 2007 UTC (17 years, 5 months ago) by niro
File size: 2556 byte(s)
-import
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 |