2 # vim:set ts=4 sw=4 expandtab:
3 # (c) Copyright 2008 The Trustees of Princeton University
12 SIOCGIFADDR_struct = "16xH2xI8x"
13 SIOCGIFHWADDR = 0x8927
14 SIOCGIFHWADDR_struct = "16x2x6B8x"
17 ip = socket.ntohl(nip)
18 return "%d.%d.%d.%d" % ((ip & 0xff000000) >> 24,
19 (ip & 0x00ff0000) >> 16,
20 (ip & 0x0000ff00) >> 8,
23 def gifaddr(interface):
26 s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0)
27 ifreq = fcntl.ioctl(s.fileno(), SIOCGIFADDR, struct.pack("16s16x", interface))
28 (family, ip) = struct.unpack(SIOCGIFADDR_struct, ifreq)
29 if family == socket.AF_INET:
38 ip = subprocess.Popen(["/sbin/ip", "-4", "addr", "ls"],
39 stdin=subprocess.PIPE, stdout=subprocess.PIPE,
40 stderr=subprocess.PIPE, close_fds=True)
41 (stdout, stderr) = ip.communicate()
42 # no wait is needed when using communicate
43 for line in stdout.split("\n"):
44 fields = [ field.strip() for field in line.split() ]
45 if fields and fields[0] == "inet":
46 # fields[-1] is the last column in fields, which has the interface name
47 # fields[1] has the IP address / netmask width
48 ret[fields[-1]] = fields[1].split("/")[0]
51 def gifhwaddr(interface):
54 s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0)
55 ifreq = fcntl.ioctl(s.fileno(), SIOCGIFHWADDR, struct.pack("16s16x", interface))
56 mac = struct.unpack(SIOCGIFHWADDR_struct, ifreq)
57 return "%02x:%02x:%02x:%02x:%02x:%02x" % mac