put rpm2cpio in our repository for safety.

our specified revision seems to be disappeared maybe by force push.

component/rpm2cpio/buildout.cfg

@@ -3,6 +3,7 @@ parts =
   rpm2cpio
 
 [rpm2cpio]
+# https://github.com/ruda/rpm2cpio
 recipe = slapos.recipe.build:download
-url = https://raw.github.com/ruda/rpm2cpio/e196173f1f6b746463b7398e381b94a42edfa345/rpm2cpio.py
+url = ${:_profile_base_location_}/${:_buildout_section_name_}
 md5sum = c5bb6227d99e1ff5df880f997cbed2e3

component/rpm2cpio/rpm2cpio

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Standalone RPM to CPIO converter
+# Copyright (c) 2012 Rudá Moura
+#
+
+'''Extract cpio archive from RPM package.
+
+rpm2cpio converts the RPM on standard input or first parameter to a CPIO archive on standard output.
+
+Usage:
+rpm2cpio < adjtimex-1.20-2.1.i386.rpm  | cpio -it
+./sbin/adjtimex
+./usr/share/doc/adjtimex-1.20
+./usr/share/doc/adjtimex-1.20/COPYING
+./usr/share/doc/adjtimex-1.20/COPYRIGHT
+./usr/share/doc/adjtimex-1.20/README
+./usr/share/man/man8/adjtimex.8.gz
+133 blocks
+'''
+
+import sys
+import StringIO
+import gzip
+
+RPM_MAGIC = '\xed\xab\xee\xdb'
+GZIP_MAGIC = '\x1f\x8b'
+
+def rpm2cpio(stream_in=sys.stdin, stream_out=sys.stdout):
+    lead = stream_in.read(96)
+    if lead[0:4] != RPM_MAGIC:
+        raise IOError, 'the input is not a RPM package'
+    data = stream_in.read()
+    idx = data.find(GZIP_MAGIC)
+    if idx == -1:
+        raise IOError, 'could not find compressed cpio archive'
+    gzstream = StringIO.StringIO(data[idx:])
+    gzipper = gzip.GzipFile(fileobj=gzstream)
+    data = gzipper.read()
+    stream_out.write(data)
+    
+if __name__ == '__main__':
+    if sys.argv[1:]:
+        try:
+            fin = open(sys.argv[1])
+            rpm2cpio(fin)
+            fin.close()
+        except IOError, e:
+            print 'Error:', sys.argv[1], e
+    else:
+        try:
+            rpm2cpio()
+        except IOError, e:
+            print 'Error:', e