2 # NEPI, a framework to manage network experiments
3 # Copyright (C) 2013 INRIA
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License version 2 as
7 # published by the Free Software Foundation;
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
19 from __future__ import print_function
25 from optparse import OptionParser
30 usage = ("usage: %prog -u <slicename> -N <vif-name> -t <vif-type> "
31 "-D <delete> -S <socket-name>")
33 parser = OptionParser(usage = usage)
35 parser.add_option("-u", "--slicename", dest="slicename",
36 help = "The name of the PlanetLab slice ",
39 parser.add_option("-N", "--vif-name", dest="vif_name",
40 help = "The name of the virtual interface, or a "
41 "unique numeric identifier to name the interface "
42 "if GRE mode is used.",
45 parser.add_option("-t", "--vif-type", dest="vif_type",
46 help = "Virtual interface type. Either IFF_TAP or IFF_TUN. "
47 "Defaults to IFF_TAP. ", type="str")
49 parser.add_option("-D", "--delete", dest="delete",
52 help="Removes virtual interface if GRE mode was used")
54 parser.add_option("-S", "--socket-name", dest="socket_name",
55 help = "Name for the unix socket used to interact with this process",
58 (options, args) = parser.parse_args()
60 vif_type = vsys.IFF_TAP
61 if options.vif_type and options.vif_type == "IFF_TUN":
62 vif_type = vsys.IFF_TUN
64 return (options.socket_name, options.vif_name, options.slicename,
65 vif_type, options.delete)
67 if __name__ == '__main__':
69 (socket_name, vif_name, slicename, vif_type, delete) = get_options()
71 # If a socket name is sent, send the STOP message and wait for a reply
73 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
75 sock.connect(socket_name)
76 encoded = base64.b64encode(STOP_MSG)
77 sock.send("%s\n" % encoded)
78 reply = sock.recv(1024)
79 reply = base64.b64decode(reply)
82 print("Did not properly shutdown device")
83 # If a slicename is provided, use it to remove a GRE device
88 sliceid = pwd.getpwnam(slicename).pw_uid
90 if vif_type == vsys.IFF_TAP:
95 # if_name should be a unique numeric vif id
96 vif_name = "%s%s-%s" % (vif_prefix, sliceid, vif_name)
98 vsys.vif_down(vif_name, delete = True)
100 # Else, use the vsys interface to set the virtual interface down
102 vsys.vif_down(vif_name)