rename src/nepi/ into just nepi/

[nepi.git] / nepi / resources / planetlab / scripts / pl-vif-down.py

diff --git a/nepi/resources/planetlab/scripts/pl-vif-down.py b/nepi/resources/planetlab/scripts/pl-vif-down.py
new file mode 100644 (file)
index 0000000..f766a37
--- /dev/null
+++ b/nepi/resources/planetlab/scripts/pl-vif-down.py
@@ -0,0 +1,104 @@
+#
+#    NEPI, a framework to manage network experiments
+#    Copyright (C) 2013 INRIA
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 2 as
+#    published by the Free Software Foundation;
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+
+from __future__ import print_function
+
+import base64
+import socket
+import vsys
+
+from optparse import OptionParser
+
+STOP_MSG = "STOP"
+
+def get_options():
+    usage = ("usage: %prog -u <slicename> -N <vif-name> -t <vif-type> "
+            "-D <delete> -S <socket-name>")
+    
+    parser = OptionParser(usage = usage)
+
+    parser.add_option("-u", "--slicename", dest="slicename",
+        help = "The name of the PlanetLab slice ",
+        type="str")
+
+    parser.add_option("-N", "--vif-name", dest="vif_name",
+        help = "The name of the virtual interface, or a "
+                "unique numeric identifier to name the interface "
+                "if GRE mode is used.",
+        type="str")
+
+    parser.add_option("-t", "--vif-type", dest="vif_type",
+            help = "Virtual interface type. Either IFF_TAP or IFF_TUN. "
+            "Defaults to IFF_TAP. ", type="str")
+
+    parser.add_option("-D", "--delete", dest="delete", 
+            action="store_true", 
+            default = False,
+            help="Removes virtual interface if GRE mode was used")
+
+    parser.add_option("-S", "--socket-name", dest="socket_name",
+        help = "Name for the unix socket used to interact with this process", 
+        type="str")
+
+    (options, args) = parser.parse_args()
+   
+    vif_type = vsys.IFF_TAP
+    if options.vif_type and options.vif_type == "IFF_TUN":
+        vif_type = vsys.IFF_TUN
+
+    return (options.socket_name, options.vif_name, options.slicename, 
+            vif_type, options.delete)
+
+if __name__ == '__main__':
+
+    (socket_name, vif_name, slicename, vif_type, delete) = get_options()
+
+    # If a socket name is sent, send the STOP message and wait for a reply
+    if socket_name:
+        sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        try:
+            sock.connect(socket_name)
+            encoded = base64.b64encode(STOP_MSG)
+            sock.send("%s\n" % encoded)
+            reply = sock.recv(1024)
+            reply = base64.b64decode(reply)
+            print(reply)
+        except:
+            print("Did not properly shutdown device")
+    # If a slicename is provided, use it to remove a GRE device
+    elif slicename:
+        import pwd
+        import getpass
+
+        sliceid = pwd.getpwnam(slicename).pw_uid
+
+        if vif_type == vsys.IFF_TAP:
+            vif_prefix = "tap"
+        else:
+            vif_prefix = "tun"
+
+        # if_name should be a unique numeric vif id
+        vif_name = "%s%s-%s" % (vif_prefix, sliceid, vif_name) 
+
+        vsys.vif_down(vif_name, delete = True)
+
+    # Else, use the vsys interface to set the virtual interface down
+    else:
+        vsys.vif_down(vif_name)
+
+