/*      $NetBSD: unix.c,v 1.37 2022/09/02 06:25:43 msaitoh Exp $        */

/*-
* Copyright (c) 1983, 1988, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)unix.c        8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: unix.c,v 1.37 2022/09/02 06:25:43 msaitoh Exp $");
#endif
#endif /* not lint */

/*
* Display protocol blocks in the unix domain.
*/
#define _KERNEL
#include <sys/types.h>
#undef _KERNEL
#include <sys/param.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <sys/un.h>
#include <sys/unpcb.h>
#define _KMEMUSER
#include <sys/file.h>
#undef _KMEMUSER

#include <netinet/in.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <kvm.h>
#include <err.h>
#include "netstat.h"
#include "prog_ops.h"

static  void unixdomainprhdr(void);
static  void unixdomainpr0(u_long, u_long, u_long, u_long, u_long, u_long,
                          u_long, u_long, u_long, struct sockaddr_un *, int);
static  void unixdomainpr(struct socket *, void *);

static struct   file *file, *fileNFILE;
static int      ns_nfiles;

static void
unixdomainprhdr(void)
{
       printf("Active UNIX domain sockets\n");
       printf("%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
           "Address", "Type", "Recv-Q", "Send-Q", "Inode", "Conn", "Refs",
           "Nextref");
}

static  const char * const socktype[] =
   { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };

static void
unixdomainpr0(u_long so_pcb, u_long so_type, u_long rcvq, u_long sndq,
             u_long inode, u_long conn, u_long refs, u_long nextref,
             u_long addr, struct sockaddr_un *sun, int remote)
{
       printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
           so_pcb, socktype[so_type], rcvq, sndq, inode, conn, refs,
           nextref);
       if (addr || remote)
               printf((remote ? " -> %.*s" : " %.*s"),
                   (int)(sun->sun_len - (sizeof(*sun) - sizeof(sun->sun_path))),
                   sun->sun_path);
       putchar('\n');
}

static void
unixdomainpr(struct socket *so, void *soaddr)
{
       struct unpcb unp, runp;
       struct sockaddr_un sun, rsun;
       static int first = 1;
       int remote = 0;

       if (kread((u_long)so->so_pcb, (char *)&unp, sizeof (unp)))
               return;
       if (unp.unp_addr)
               if (kread((u_long)unp.unp_addr, (char *)&sun, sizeof (sun)))
                       unp.unp_addr = 0;

       if (!unp.unp_addr) {
               memset(&rsun, 0, sizeof(rsun));
               if (unp.unp_conn &&
                   kread((u_long)unp.unp_conn, (char *)&runp, sizeof (runp)) == 0 &&
                   runp.unp_addr &&
                   kread((u_long)runp.unp_addr, (char *)&rsun, sizeof (rsun)) == 0 &&
                   rsun.sun_path[0] != '\0')
                       remote = 1;
       }

       if (first) {
               unixdomainprhdr();
               first = 0;
       }

       unixdomainpr0((u_long)so->so_pcb, so->so_type, so->so_rcv.sb_cc,
                     so->so_snd.sb_cc, (u_long)unp.unp_vnode,
                     (u_long)unp.unp_conn, (u_long)unp.unp_refs,
                     (u_long)unp.unp_nextref, (u_long)unp.unp_addr,
                     remote ? &rsun : &sun, remote);
}

void
unixpr(u_long off)
{
       struct file *fp;
       struct socket sock, *so = &sock;
       char *filebuf;
       struct protosw *unixsw = (struct protosw *)off;

       if (use_sysctl) {
               struct kinfo_pcb *pcblist;
               int mib[8];
               size_t namelen = 0, size = 0, i;
               const char *mibnames[] = {
                       "net.local.stream.pcblist",
                       "net.local.dgram.pcblist",
                       "net.local.seqpacket.pcblist",
                       NULL,
               };
               const char **mibname;
               static int first = 1;

               for (mibname = mibnames; *mibname; mibname++) {
                       memset(mib, 0, sizeof(mib));

                       if (sysctlnametomib(*mibname, mib, &namelen) == -1)
                               err(1, "sysctlnametomib: %s", *mibname);

                       if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
                           NULL, &size, NULL, 0) == -1)
                               err(1, "sysctl (query)");

                       if ((pcblist = malloc(size)) == NULL)
                               err(1, "malloc");
                       memset(pcblist, 0, size);

                       mib[6] = sizeof(*pcblist);
                       mib[7] = size / sizeof(*pcblist);

                       if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
                                       pcblist, &size, NULL, 0) == -1)
                               err(1, "sysctl (copy)");

                       for (i = 0; i < size / sizeof(*pcblist); i++) {
                               struct kinfo_pcb *ki = &pcblist[i];
                               struct sockaddr_un *sun;
                               int remote = 0;

                               if (first) {
                                       unixdomainprhdr();
                                       first = 0;
                               }

                               sun = (struct sockaddr_un *)&ki->ki_dst;
                               if (sun->sun_path[0] != '\0') {
                                       remote = 1;
                               } else {
                                       sun = (struct sockaddr_un *)&ki->ki_src;
                               }

                               unixdomainpr0(ki->ki_pcbaddr, ki->ki_type,
                                             ki->ki_rcvq, ki->ki_sndq,
                                             ki->ki_vnode, ki->ki_conn,
                                             ki->ki_refs, ki->ki_nextref,
                                             ki->ki_sockaddr, sun, remote);
                       }

                       free(pcblist);
               }

       } else {
               filebuf = (char *)kvm_getfiles(get_kvmd(), KERN_FILE,
                                              0, &ns_nfiles);
               if (filebuf == 0) {
                       printf("file table read error: %s",
                           kvm_geterr(get_kvmd()));
                       return;
               }
               file = (struct file *)(filebuf + sizeof(fp));
               fileNFILE = file + ns_nfiles;
               for (fp = file; fp < fileNFILE; fp++) {
                       if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET)
                               continue;
                       if (kread((u_long)fp->f_data, (char *)so, sizeof (*so)))
                               continue;
                       /* kludge */
                       if (so->so_proto >= unixsw &&
                           so->so_proto <= unixsw + 2)
                               if (so->so_pcb)
                                       unixdomainpr(so, fp->f_data);
               }
       }
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.