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/*
* Copyright (c) 2009, Giampaolo Rodola'.
* All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <Python.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <kvm.h>
#define _KERNEL // silence compiler warning
#include <sys/file.h> // DTYPE_SOCKET
#include <netdb.h> // INET6_ADDRSTRLEN, in6_addr
#undef _KERNEL
#include "../../_psutil_common.h"
#include "../../_psutil_posix.h"
PyObject *
psutil_net_connections(PyObject *self, PyObject *args) {
pid_t pid;
int i;
int cnt;
int state;
int lport;
int rport;
char lip[INET6_ADDRSTRLEN];
char rip[INET6_ADDRSTRLEN];
int inseq;
char errbuf[_POSIX2_LINE_MAX];
kvm_t *kd = NULL;
struct kinfo_file *kif;
struct kinfo_file *ikf;
struct in6_addr laddr6;
PyObject *py_retlist = PyList_New(0);
PyObject *py_tuple = NULL;
PyObject *py_laddr = NULL;
PyObject *py_raddr = NULL;
PyObject *py_lpath = NULL;
PyObject *py_af_filter = NULL;
PyObject *py_type_filter = NULL;
PyObject *py_family = NULL;
PyObject *_type = NULL;
if (py_retlist == NULL)
return NULL;
if (! PyArg_ParseTuple(args, _Py_PARSE_PID "OO", &pid, &py_af_filter,
&py_type_filter)) {
goto error;
}
if (!PySequence_Check(py_af_filter) || !PySequence_Check(py_type_filter)) {
PyErr_SetString(PyExc_TypeError, "arg 2 or 3 is not a sequence");
goto error;
}
kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
if (! kd) {
convert_kvm_err("kvm_openfiles", errbuf);
goto error;
}
ikf = kvm_getfiles(kd, KERN_FILE_BYPID, -1, sizeof(*ikf), &cnt);
if (! ikf) {
psutil_PyErr_SetFromOSErrnoWithSyscall("kvm_getfiles");
goto error;
}
for (int i = 0; i < cnt; i++) {
const struct kinfo_file *kif = ikf + i;
py_tuple = NULL;
py_laddr = NULL;
py_raddr = NULL;
py_lpath = NULL;
// apply filters
if (kif->f_type != DTYPE_SOCKET)
continue;
if (pid != -1 && kif->p_pid != (uint32_t)pid)
continue;
py_family = PyLong_FromLong((long)kif->so_family);
inseq = PySequence_Contains(py_af_filter, py_family);
Py_DECREF(py_family);
if (inseq == 0)
continue;
_type = PyLong_FromLong((long)kif->so_type);
inseq = PySequence_Contains(py_type_filter, _type);
Py_DECREF(_type);
if (inseq == 0)
continue;
// IPv4 / IPv6 socket
if ((kif->so_family == AF_INET) || (kif->so_family == AF_INET6)) {
// status
if (kif->so_type == SOCK_STREAM)
state = kif->t_state;
else
state = PSUTIL_CONN_NONE;
// local & remote port
lport = ntohs(kif->inp_lport);
rport = ntohs(kif->inp_fport);
// local addr
inet_ntop(kif->so_family, &kif->inp_laddru, lip, sizeof(lip));
py_laddr = Py_BuildValue("(si)", lip, lport);
if (! py_laddr)
goto error;
// remote addr
if (rport != 0) {
inet_ntop(kif->so_family, &kif->inp_faddru, rip, sizeof(rip));
py_raddr = Py_BuildValue("(si)", rip, rport);
}
else {
py_raddr = Py_BuildValue("()");
}
if (! py_raddr)
goto error;
// populate tuple and list
py_tuple = Py_BuildValue(
"(iiiNNil)",
kif->fd_fd,
kif->so_family,
kif->so_type,
py_laddr,
py_raddr,
state,
kif->p_pid
);
if (! py_tuple)
goto error;
if (PyList_Append(py_retlist, py_tuple))
goto error;
Py_DECREF(py_tuple);
}
// UNIX socket
else if (kif->so_family == AF_UNIX) {
py_lpath = PyUnicode_DecodeFSDefault(kif->unp_path);
if (! py_lpath)
goto error;
py_tuple = Py_BuildValue(
"(iiiOsil)",
kif->fd_fd,
kif->so_family,
kif->so_type,
py_lpath,
"", // raddr
PSUTIL_CONN_NONE,
kif->p_pid
);
if (! py_tuple)
goto error;
if (PyList_Append(py_retlist, py_tuple))
goto error;
Py_DECREF(py_lpath);
Py_DECREF(py_tuple);
Py_INCREF(Py_None);
}
}
kvm_close(kd);
return py_retlist;
error:
Py_XDECREF(py_tuple);
Py_XDECREF(py_laddr);
Py_XDECREF(py_raddr);
Py_DECREF(py_retlist);
if (kd != NULL)
kvm_close(kd);
return NULL;
}
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