components/rpm2cpio/src/rpm2cpio.pl
changeset 307 c12c36cb5349
child 2020 b8615970ab39
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/rpm2cpio/src/rpm2cpio.pl	Thu Jun 16 02:27:24 2011 -0700
@@ -0,0 +1,90 @@
+#!/usr/perl5/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
+$gzip = "gzip";
+
+sub printhelp {
+  print <<HERE;
+rpm2cpio, perl version by orabidoo <odar\@pobox.com>
+dumps the contents to stdout as a cpio archive
+
+use: rpm2cpio [file.rpm] > file.cpio
+
+Here's how to use cpio:
+     list of contents:   cpio -t -i < /file/name
+        extract files:   cpio -d -i < /file/name
+HERE
+
+  exit 0;
+}
+
+if ($#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 or 4 RPM\n" if $major != 3 && $major != 4;
+
+$rpm = substr($rpm, 96);
+
+while ($rpm ne '') {
+  $rpm =~ s/^\[email protected]*//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;
+