use print() - import print_function - should be fine for both py2 and py3

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

diff --git a/src/nepi/resources/planetlab/scripts/pl-vif-down.py b/src/nepi/resources/planetlab/scripts/pl-vif-down.py
index 0047be4..f766a37 100644 (file)
--- a/src/nepi/resources/planetlab/scripts/pl-vif-down.py
+++ b/src/nepi/resources/planetlab/scripts/pl-vif-down.py
@@ -3,9 +3,8 @@
 #    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 as published by
-#    the Free Software Foundation, either version 3 of the License, or
-#    (at your option) any later version.
+#    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
@@ -17,6 +16,8 @@
 #
 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
 
+from __future__ import print_function
+
 import base64
 import socket
 import vsys
@@ -26,16 +27,25 @@ from optparse import OptionParser
 STOP_MSG = "STOP"
 
 def get_options():
-    usage = ("usage: %prog -N <vif-name> -D <delete> -S <socket-name>")
+    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,
@@ -43,28 +53,52 @@ def get_options():
 
     parser.add_option("-S", "--socket-name", dest="socket_name",
         help = "Name for the unix socket used to interact with this process", 
-        default = "tap.sock", type="str")
+        type="str")
 
     (options, args) = parser.parse_args()
-    
-    return (options.vif_name, options.delete, options.socket_name)
+   
+    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__':
 
-    (vif_name, delete, socket_name) = get_options()
+    (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)
-        sock.connect(socket_name)
-        encoded = base64.b64encode(STOP_MSG)
-        sock.send("%s\n" % encoded)
-        reply = sock.recv(1024)
-        reply = base64.b64decode(reply)
-        print reply
+        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
-    elif vif_name:
-        vsys.vif_down(vif_name, delete = delete)
+    else:
+        vsys.vif_down(vif_name)