Changeset 256 for etherws/trunk/etherws.py

Timestamp:

10/10/13 00:43:48 (11 years ago)

Author:

atzm

Message:

setif support for netdev

File:

• etherws/trunk/etherws.py (modified) (8 diffs)

etherws/trunk/etherws.py

@@ -46 +46 @@
 import base64
 import socket
+import struct
 import urllib2
 import hashlib
@@ -271 +272 @@
     def _del_privattr(self, name, obj):
         return delattr(obj, self._privattr(name))
+
+
+class NetworkInterface(object):
+    SIOCGIFADDR = 0x8915  # from <linux/sockios.h>
+    SIOCSIFADDR = 0x8916
+    SIOCGIFNETMASK = 0x891b
+    SIOCSIFNETMASK = 0x891c
+    SIOCGIFMTU = 0x8921
+    SIOCSIFMTU = 0x8922
+
+    def __init__(self, ifname):
+        self._ifname = struct.pack('16s', str(ifname)[:15])
+
+    def _ioctl(self, req, data):
+        try:
+            sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            return fcntl.ioctl(sock.fileno(), req, data)
+        finally:
+            sock.close()
+
+    @property
+    def address(self):
+        try:
+            data = struct.pack('16s18x', self._ifname)
+            ret = self._ioctl(self.SIOCGIFADDR, data)
+            return socket.inet_ntoa(ret[20:24])
+        except IOError:
+            return ''
+
+    @property
+    def netmask(self):
+        try:
+            data = struct.pack('16s18x', self._ifname)
+            ret = self._ioctl(self.SIOCGIFNETMASK, data)
+            return socket.inet_ntoa(ret[20:24])
+        except IOError:
+            return ''
+
+    @property
+    def mtu(self):
+        try:
+            data = struct.pack('16s18x', self._ifname)
+            ret = self._ioctl(self.SIOCGIFMTU, data)
+            return struct.unpack('i', ret[16:20])[0]
+        except IOError:
+            return 0
+
+    @address.setter
+    def address(self, addr):
+        data = struct.pack('16si4s10x', self._ifname, socket.AF_INET,
+                           socket.inet_aton(addr))
+        self._ioctl(self.SIOCSIFADDR, data)
+
+    @netmask.setter
+    def netmask(self, addr):
+        data = struct.pack('16si4s10x', self._ifname, socket.AF_INET,
+                           socket.inet_aton(addr))
+        self._ioctl(self.SIOCSIFNETMASK, data)
+
+    @mtu.setter
+    def mtu(self, mtu):
+        data = struct.pack('16si12x', self._ifname, mtu)
+        self._ioctl(self.SIOCSIFMTU, data)
 
 
@@ -478 +542 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        return ''
+        return NetworkInterface(self.target).address
 
     @property
@@ -484 +548 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        return ''
+        return NetworkInterface(self.target).netmask
 
     @property
@@ -490 +554 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        return ''
+        return NetworkInterface(self.target).mtu
 
     @address.setter
@@ -496 +560 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        raise NotImplementedError('unsupported')
+        NetworkInterface(self.target).address = address
 
     @netmask.setter
@@ -502 +566 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        raise NotImplementedError('unsupported')
+        NetworkInterface(self.target).netmask = netmask
 
     @mtu.setter
@@ -508 +572 @@
         if self.closed:
             raise ValueError('I/O operation on closed netdev')
-        raise NotImplementedError('unsupported')
+        NetworkInterface(self.target).mtu = mtu
 
     def open(self):