1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
|
/* $Id: libnatpmpmodule.c,v 1.6 2011/07/30 13:19:59 nanard Exp $ */
/* libnatpmp
* http://miniupnp.free.fr/libnatpmp.html
Copyright (c) 2007-2011, Thomas BERNARD
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <Python.h>
#ifdef WIN32
#include <winsock2.h>
#else
#include <netinet/in.h>
#include <arpa/inet.h>
#endif
#define STATICLIB
#include "structmember.h"
#include "natpmp.h"
/* for compatibility with Python < 2.4 */
#ifndef Py_RETURN_NONE
#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
#endif
#ifndef Py_RETURN_TRUE
#define Py_RETURN_TRUE return Py_INCREF(Py_True), Py_True
#endif
#ifndef Py_RETURN_FALSE
#define Py_RETURN_FALSE return Py_INCREF(Py_False), Py_False
#endif
typedef struct {
PyObject_HEAD
/* Type-specific fields go here. */
unsigned int discoverdelay;
natpmp_t natpmp;
} NATPMPObject;
static PyMemberDef NATPMP_members[] = {
{"discoverdelay", T_UINT, offsetof(NATPMPObject, discoverdelay),
0/*READWRITE*/, "value in ms used to wait for NATPMP responses"
},
{NULL}
};
static PyObject *
NATPMPObject_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
NATPMPObject *self;
self = (NATPMPObject *)type->tp_alloc(type, 0);
if (self) {
initnatpmp(&self->natpmp, 0, 0);
}
return (PyObject *)self;
}
static void
NATPMPObject_dealloc(NATPMPObject *self)
{
closenatpmp(&self->natpmp);
self->ob_type->tp_free((PyObject*)self);
}
static PyObject *
NATPMP_externalipaddress(NATPMPObject *self)
{
int r;
struct timeval timeout;
fd_set fds;
natpmpresp_t response;
r = sendpublicaddressrequest(&self->natpmp);
if (r < 0) {
#ifdef ENABLE_STRNATPMPERR
PyErr_SetString(PyExc_Exception, strnatpmperr(r));
#endif
return NULL;
}
do {
FD_ZERO(&fds);
FD_SET(self->natpmp.s, &fds);
getnatpmprequesttimeout(&self->natpmp, &timeout);
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
r = readnatpmpresponseorretry(&self->natpmp, &response);
if (r < 0 && r != NATPMP_TRYAGAIN) {
#ifdef ENABLE_STRNATPMPERR
PyErr_SetString(PyExc_Exception, strnatpmperr(r));
#endif
return NULL;
}
} while (r == NATPMP_TRYAGAIN);
return Py_BuildValue("s", inet_ntoa(response.pnu.publicaddress.addr));
}
static PyObject *
NATPMP_domapping(natpmp_t *n, unsigned short eport, unsigned short iport,
const char *protocol, unsigned int lifetime)
{
int proto;
struct timeval timeout;
fd_set fds;
natpmpresp_t response;
int r;
if (!strncasecmp("tcp", protocol, 3)) {
proto = NATPMP_PROTOCOL_TCP;
} else if (!strncasecmp("udp", protocol, 3)) {
proto = NATPMP_PROTOCOL_UDP;
} else {
PyErr_SetString(PyExc_Exception, "Unknown protocol");
return NULL;
}
r = sendnewportmappingrequest(n, proto, iport, eport,
lifetime);
if (r < 0) {
#ifdef ENABLE_STRNATPMPERR
PyErr_SetString(PyExc_Exception, strnatpmperr(r));
#endif
return NULL;
}
do {
FD_ZERO(&fds);
FD_SET(n->s, &fds);
getnatpmprequesttimeout(n, &timeout);
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
r = readnatpmpresponseorretry(n, &response);
if (r < 0 && r != NATPMP_TRYAGAIN) {
#ifdef ENABLE_STRNATPMPERR
PyErr_SetString(PyExc_Exception, strnatpmperr(r));
#endif
return NULL;
}
} while (r == NATPMP_TRYAGAIN);
return Py_BuildValue("H", response.pnu.newportmapping.mappedpublicport);
}
/* AddPortMapping(externalPort, protocol, internalPort, lifetime)
* protocol is 'UDP' or 'TCP' */
static PyObject *
NATPMP_addportmapping(NATPMPObject *self, PyObject *args)
{
unsigned short eport;
unsigned short iport;
unsigned int lifetime;
const char *protocol;
if (!PyArg_ParseTuple(args, "HsHI", &eport, &protocol, &iport, &lifetime))
return NULL;
return NATPMP_domapping(&self->natpmp, eport, iport, protocol, lifetime);
}
/* DeletePortMapping(externalPort, protocol, internalPort)
* protocol is 'UDP' or 'TCP' */
static PyObject *
NATPMP_deleteportmapping(NATPMPObject *self, PyObject *args)
{
unsigned short eport;
unsigned short iport;
const char *protocol;
if (!PyArg_ParseTuple(args, "HsH", &eport, &protocol, &iport))
return NULL;
return NATPMP_domapping(&self->natpmp, eport, iport, protocol, 0);
}
/* natpmp.NATPMP object Method Table */
static PyMethodDef NATPMP_methods[] = {
{"externalipaddress", (PyCFunction)NATPMP_externalipaddress, METH_NOARGS,
"return external IP address"
},
{"addportmapping", (PyCFunction)NATPMP_addportmapping, METH_VARARGS,
"add a port mapping"
},
{"deleteportmapping", (PyCFunction)NATPMP_deleteportmapping, METH_VARARGS,
"delete a port mapping"
},
{NULL} /* Sentinel */
};
static PyTypeObject NATPMPType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"libnatpmp.NATPMP", /*tp_name*/
sizeof(NATPMPObject), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)NATPMPObject_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"NATPMP objects", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
NATPMP_methods, /* tp_methods */
NATPMP_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
NATPMPObject_new, /* tp_new */
};
/* module methods */
static PyMethodDef libnatpmp_methods[] = {
{NULL} /* Sentinel */
};
#ifndef PyMODINIT_FUNC /* declarations for DLL import/export */
#define PyMODINIT_FUNC void
#endif
PyMODINIT_FUNC
initlibnatpmp(void)
{
PyObject* m;
if (PyType_Ready(&NATPMPType) < 0)
return;
m = Py_InitModule3("libnatpmp", libnatpmp_methods,
"libnatpmp module.");
Py_INCREF(&NATPMPType);
PyModule_AddObject(m, "NATPMP", (PyObject *)&NATPMPType);
}
|