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 as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
24 from optparse import OptionParser
29 usage = ("usage: %prog -u <slicename> -N <vif-name> -t <vif-type> "
30 "-D <delete> -S <socket-name>")
32 parser = OptionParser(usage = usage)
34 parser.add_option("-u", "--slicename", dest="slicename",
35 help = "The name of the PlanetLab slice ",
38 parser.add_option("-N", "--vif-name", dest="vif_name",
39 help = "The name of the virtual interface, or a "
40 "unique numeric identifier to name the interface "
41 "if GRE mode is used.",
44 parser.add_option("-t", "--vif-type", dest="vif_type",
45 help = "Virtual interface type. Either IFF_TAP or IFF_TUN. "
46 "Defaults to IFF_TAP. ", type="str")
48 parser.add_option("-D", "--delete", dest="delete",
51 help="Removes virtual interface if GRE mode was used")
53 parser.add_option("-S", "--socket-name", dest="socket_name",
54 help = "Name for the unix socket used to interact with this process",
57 (options, args) = parser.parse_args()
59 vif_type = vsys.IFF_TAP
60 if options.vif_type and options.vif_type == "IFF_TUN":
61 vif_type = vsys.IFF_TUN
63 return (options.socket_name, options.vif_name, options.slicename,
64 vif_type, options.delete)
66 if __name__ == '__main__':
68 (socket_name, vif_name, slicename, vif_type, delete) = get_options()
70 # If a socket name is sent, send the STOP message and wait for a reply
72 sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
73 sock.connect(socket_name)
74 encoded = base64.b64encode(STOP_MSG)
75 sock.send("%s\n" % encoded)
76 reply = sock.recv(1024)
77 reply = base64.b64decode(reply)
80 # If a slicename is provided, use it to remove a GRE device
85 sliceid = pwd.getpwnam(slicename).pw_uid
87 if vif_type == vsys.IFF_TAP:
92 # if_name should be a unique numeric vif id
93 vif_name = "%s%s-%s" % (vif_prefix, sliceid, vif_name)
95 vsys.vif_down(vif_name, delete = True)
97 # Else, use the vsys interface to set the virtual interface down
99 vsys.vif_down(vif_name)