Copyright notice for both Intel and Princeton

[bootmanager.git] / source / utils.py

diff --git a/source/utils.py b/source/utils.py
index b9a3746..9efea4d 100644 (file)
--- a/source/utils.py
+++ b/source/utils.py
@@ -1,47 +1,18 @@
+#!/usr/bin/python2
+
 # Copyright (c) 2003 Intel Corporation
 # All rights reserved.
-
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-
-#     * Redistributions of source code must retain the above copyright
-#       notice, this list of conditions and the following disclaimer.
-
-#     * Redistributions in binary form must reproduce the above
-#       copyright notice, this list of conditions and the following
-#       disclaimer in the documentation and/or other materials provided
-#       with the distribution.
-
-#     * Neither the name of the Intel Corporation nor the names of its
-#       contributors may be used to endorse or promote products derived
-#       from this software without specific prior written permission.
-
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR
-# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF
-# YOUR JURISDICTION. It is licensee's responsibility to comply with any
-# export regulations applicable in licensee's jurisdiction. Under
-# CURRENT (May 2000) U.S. export regulations this software is eligible
-# for export from the U.S. and can be downloaded by or otherwise
-# exported or reexported worldwide EXCEPT to U.S. embargoed destinations
-# which include Cuba, Iraq, Libya, North Korea, Iran, Syria, Sudan,
-# Afghanistan and any other country to which the U.S. has embargoed
-# goods and services.
-
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+# expected /proc/partitions format
 
 import os, sys, shutil
 import popen2
+import socket
+import fcntl
+import string
+import exceptions
 
 from Exceptions import *
 
@@ -158,3 +129,32 @@ def removefile( filepath ):
 
     return 1
 
+
+
+# from: http://forums.devshed.com/archive/t-51149/
+#              Ethernet-card-address-Through-Python-or-C
+
+def hexy(n):
+    return "%02x" % (ord(n))
+
+def get_mac_from_interface(ifname):
+    """
+    given a device name, like eth0, return its mac_address.
+    return None if the device doesn't exist.
+    """
+    
+    SIOCGIFHWADDR = 0x8927 # magic number
+
+    s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
+    ifname = string.strip(ifname)
+    ifr = ifname + '\0'*(32-len(ifname))
+
+    try:
+        r= fcntl.ioctl(s.fileno(),SIOCGIFHWADDR,ifr)
+        addr = map(hexy,r[18:24])
+        ret = (':'.join(map(str, addr)))
+    except IOError, e:
+        ret = None
+        
+    return ret
+