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/*
* Copyright (C) 2011 - 2013 Red Hat Inc.
*
* David Malcolm <dmalcolm@redhat.com>
*
* This application 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; version 2.
*
* This application 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.
*/
/* Python object corresponding to a (struct rtnl_addr) */
#include <Python.h>
#include "structmember.h"
#include <arpa/inet.h>
#include <netlink/addr.h>
#include <netlink/route/addr.h>
#include <netlink/route/rtnl.h>
#include "etherinfo_struct.h"
#include "etherinfo.h"
/* IP Address parsing: */
static PyObject *
PyNetlinkIPaddress_from_rtnl_addr(struct rtnl_addr *addr)
{
PyNetlinkIPaddress *py_obj;
char buf[INET6_ADDRSTRLEN+1];
struct nl_addr *peer_addr = NULL, *brdcst = NULL;
py_obj = PyObject_New(PyNetlinkIPaddress,
ðtool_netlink_ip_address_Type);
if (!py_obj) {
return NULL;
}
/* Set IP address family. Only AF_INET and AF_INET6 is supported */
py_obj->family = rtnl_addr_get_family(addr);
if (py_obj->family != AF_INET && py_obj->family != AF_INET6) {
PyErr_SetString(PyExc_RuntimeError,
"Only IPv4 (AF_INET) and IPv6 (AF_INET6) address types are supported");
goto error;
}
/* Set local IP address: */
memset(&buf, 0, sizeof(buf));
if (!inet_ntop(py_obj->family, nl_addr_get_binary_addr(rtnl_addr_get_local(addr)),
buf, sizeof(buf))) {
PyErr_SetFromErrno(PyExc_RuntimeError);
goto error;
}
py_obj->local = PyString_FromString(buf);
if (!py_obj->local) {
goto error;
}
/* Set peer IP address: */
memset(&buf, 0, sizeof(buf));
if ((peer_addr = rtnl_addr_get_peer(addr))) {
nl_addr2str(peer_addr, buf, sizeof(buf));
py_obj->peer = PyString_FromString(buf);
if (!py_obj->local) {
goto error;
}
} else {
py_obj->peer = NULL;
}
/* Set IP address prefix length (netmask): */
py_obj->prefixlen = rtnl_addr_get_prefixlen(addr);
/* Set ipv4_broadcast: */
py_obj->ipv4_broadcast = NULL;
brdcst = rtnl_addr_get_broadcast(addr);
if( py_obj->family == AF_INET && brdcst ) {
memset(&buf, 0, sizeof(buf));
if (!inet_ntop(AF_INET, nl_addr_get_binary_addr(brdcst),
buf, sizeof(buf))) {
PyErr_SetFromErrno(PyExc_RuntimeError);
goto error;
}
py_obj->ipv4_broadcast = PyString_FromString(buf);
if (!py_obj->ipv4_broadcast) {
goto error;
}
}
/* Set IP address scope: */
memset(&buf, 0, sizeof(buf));
rtnl_scope2str(rtnl_addr_get_scope(addr), buf, sizeof(buf));
py_obj->scope = PyString_FromString(buf);
return (PyObject*)py_obj;
error:
Py_DECREF(py_obj);
return NULL;
}
static void
netlink_ip_address_dealloc(PyNetlinkIPaddress *obj)
{
Py_DECREF(obj->local);
Py_XDECREF(obj->peer);
Py_XDECREF(obj->ipv4_broadcast);
Py_XDECREF(obj->scope);
/* We can call PyObject_Del directly rather than calling through
tp_free since the type is not subtypable (Py_TPFLAGS_BASETYPE is
not set): */
PyObject_Del(obj);
}
static PyObject*
netlink_ip_address_repr(PyNetlinkIPaddress *obj)
{
PyObject *result = PyString_FromString("ethtool.NetlinkIPaddress(family=");
char buf[256];
memset(&buf, 0, sizeof(buf));
nl_af2str(obj->family, buf, sizeof(buf));
PyString_ConcatAndDel(&result,
PyString_FromFormat("%s, address='", buf));
PyString_Concat(&result, obj->local);
if (obj->family == AF_INET) {
PyString_ConcatAndDel(&result,
PyString_FromFormat("', netmask=%d",
obj->prefixlen));
} else if (obj->family == AF_INET6) {
PyString_ConcatAndDel(&result,
PyString_FromFormat("/%d'",
obj->prefixlen));
}
if (obj->peer) {
PyString_ConcatAndDel(&result, PyString_FromString(", peer_address='"));
PyString_Concat(&result, obj->peer);
PyString_ConcatAndDel(&result, PyString_FromString("'"));
}
if (obj->family == AF_INET && obj->ipv4_broadcast) {
PyString_ConcatAndDel(&result, PyString_FromString(", broadcast='"));
PyString_Concat(&result, obj->ipv4_broadcast);
PyString_ConcatAndDel(&result, PyString_FromString("'"));
}
PyString_ConcatAndDel(&result, PyString_FromString(", scope="));
PyString_Concat(&result, obj->scope);
PyString_ConcatAndDel(&result, PyString_FromString(")"));
return result;
}
static PyMemberDef _ethtool_netlink_ip_address_members[] = {
{"address",
T_OBJECT_EX,
offsetof(PyNetlinkIPaddress, local),
0,
NULL},
{"peer_address",
T_OBJECT_EX,
offsetof(PyNetlinkIPaddress, peer),
0,
NULL},
{"netmask",
T_INT,
offsetof(PyNetlinkIPaddress, prefixlen),
0,
NULL},
{"broadcast",
T_OBJECT, /* can be NULL */
offsetof(PyNetlinkIPaddress, ipv4_broadcast),
0,
NULL},
{"scope",
T_OBJECT_EX,
offsetof(PyNetlinkIPaddress, scope),
0,
NULL},
{NULL} /* End of member list */
};
PyTypeObject ethtool_netlink_ip_address_Type = {
PyVarObject_HEAD_INIT(0, 0)
.tp_name = "ethtool.NetlinkIPaddress",
.tp_basicsize = sizeof(PyNetlinkIPaddress),
.tp_dealloc = (destructor)netlink_ip_address_dealloc,
.tp_repr = (reprfunc)netlink_ip_address_repr,
.tp_members = _ethtool_netlink_ip_address_members,
};
PyObject *
make_python_address_from_rtnl_addr(struct rtnl_addr *addr)
{
assert(addr);
switch( rtnl_addr_get_family(addr) ) {
case AF_INET:
case AF_INET6:
return PyNetlinkIPaddress_from_rtnl_addr(addr);
default:
return PyErr_SetFromErrno(PyExc_RuntimeError);
}
}
/*
Local variables:
c-basic-offset: 8
indent-tabs-mode: y
End:
*/
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