netstat.tproj/unix.c

   1 /*
   2  * Copyright (c) 2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*-
  29  * Copyright (c) 1983, 1988, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 #ifndef lint
  62 static const char rcsid[] =
  63         "$Id: unix.c,v 1.4 2006/02/07 06:22:20 lindak Exp $";
  64 #endif /* not lint */
  65
  66 /*
  67  * Display protocol blocks in the unix domain.
  68  */
  69 #include <sys/param.h>
  70 #include <sys/queue.h>
  71 #include <sys/socket.h>
  72 #include <sys/socketvar.h>
  73 #include <sys/mbuf.h>
  74 #include <sys/sysctl.h>
  75 #include <sys/un.h>
  76 #include <sys/unpcb.h>
  77
  78 #include <netinet/in.h>
  79
  80 #include <errno.h>
  81 #include <err.h>
  82 #include <stddef.h>
  83 #include <stdio.h>
  84 #include <stdlib.h>
  85 #include "netstat.h"
  86
  87 #if !TARGET_OS_EMBEDDED
  88 static  void unixdomainpr __P((struct xunpcb64 *, struct xsocket64 *));
  89 #else
  90 static  void unixdomainpr __P((struct xunpcb *, struct xsocket *));
  91 #endif
  92
  93 static  const char *const socktype[] =
  94     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
  95
  96 void
  97 unixpr()
  98 {
  99         char    *buf;
 100         int     type;
 101         size_t  len;
 102         struct  xunpgen *xug, *oxug;
 103 #if !TARGET_OS_EMBEDDED
 104         struct  xsocket64 *so;
 105         struct  xunpcb64 *xunp;
 106         char mibvar[sizeof "net.local.seqpacket.pcblist64"];
 107 #else
 108         struct  xsocket *so;
 109         struct  xunpcb *xunp;
 110         char mibvar[sizeof "net.local.seqpacket.pcblist"];
 111 #endif
 112
 113         for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
 114 #if !TARGET_OS_EMBEDDED
 115                 sprintf(mibvar, "net.local.%s.pcblist64", socktype[type]);
 116 #else
 117                 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]);
 118 #endif
 119                 len = 0;
 120                 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 121                         if (errno != ENOENT)
 122                                 warn("sysctl: %s", mibvar);
 123                         continue;
 124                 }
 125                 if ((buf = malloc(len)) == 0) {
 126                         warn("malloc %lu bytes", (u_long)len);
 127                         return;
 128                 }
 129                 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 130                         warn("sysctl: %s", mibvar);
 131                         free(buf);
 132                         return;
 133                 }
 134
 135                 oxug = xug = (struct xunpgen *)buf;
 136                 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
 137                      xug->xug_len > sizeof(struct xunpgen);
 138                      xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
 139 #if !TARGET_OS_EMBEDDED
 140                         xunp = (struct xunpcb64 *)xug;
 141 #else
 142                         xunp = (struct xunpcb *)xug;
 143 #endif
 144                         so = &xunp->xu_socket;
 145
 146                         /* Ignore PCBs which were freed during copyout. */
 147 #if !TARGET_OS_EMBEDDED
 148                         if (xunp->xunp_gencnt > oxug->xug_gen)
 149 #else
 150                         if (xunp->xu_unp.unp_gencnt > oxug->xug_gen)
 151 #endif
 152                                 continue;
 153                         unixdomainpr(xunp, so);
 154                 }
 155                 if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
 156                         if (oxug->xug_count > xug->xug_count) {
 157                                 printf("Some %s sockets may have been deleted.\n",
 158                                        socktype[type]);
 159                         } else if (oxug->xug_count < xug->xug_count) {
 160                                 printf("Some %s sockets may have been created.\n",
 161                                socktype[type]);
 162                         } else {
 163                                 printf("Some %s sockets may have been created or deleted\n",
 164                                socktype[type]);
 165                         }
 166                 }
 167                 free(buf);
 168         }
 169 }
 170
 171 static void
 172 unixdomainpr(xunp, so)
 173 #if !TARGET_OS_EMBEDDED
 174         struct xunpcb64 *xunp;
 175         struct xsocket64 *so;
 176 #else
 177         struct xunpcb *xunp;
 178         struct xsocket *so;
 179 #endif
 180 {
 181 #if TARGET_OS_EMBEDDED
 182         struct unpcb *unp;
 183 #endif
 184         struct sockaddr_un *sa;
 185         static int first = 1;
 186
 187 #if !TARGET_OS_EMBEDDED
 188         sa = &xunp->xu_addr;
 189 #else
 190         unp = &xunp->xu_unp;
 191         if (unp->unp_addr)
 192                 sa = &xunp->xu_addr;
 193         else
 194                 sa = (struct sockaddr_un *)0;
 195 #endif
 196
 197         if (first) {
 198                 printf("Active LOCAL (UNIX) domain sockets\n");
 199                 printf(
 200 #if !TARGET_OS_EMBEDDED
 201 "%-16.16s %-6.6s %-6.6s %-6.6s %16.16s %16.16s %16.16s %16.16s Addr\n",
 202 #else
 203 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
 204 #endif
 205                     "Address", "Type", "Recv-Q", "Send-Q",
 206                     "Inode", "Conn", "Refs", "Nextref");
 207                 first = 0;
 208         }
 209 #if !TARGET_OS_EMBEDDED
 210         printf("%16lx %-6.6s %6u %6u %16lx %16lx %16lx %16lx",
 211                (long)xunp->xu_unpp, socktype[so->so_type], so->so_rcv.sb_cc,
 212                so->so_snd.sb_cc,
 213                (long)xunp->xunp_vnode, (long)xunp->xunp_conn,
 214                (long)xunp->xunp_refs, (long)xunp->xunp_reflink.le_next);
 215 #else
 216         printf("%8lx %-6.6s %6u %6u %8lx %8lx %8lx %8lx",
 217                (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
 218                so->so_snd.sb_cc,
 219                (long)unp->unp_vnode, (long)unp->unp_conn,
 220                (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next);
 221 #endif
 222
 223 #if !TARGET_OS_EMBEDDED
 224         if (sa->sun_len)
 225 #else
 226         if (sa)
 227 #endif
 228                 printf(" %.*s",
 229                     (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),
 230                     sa->sun_path);
 231         putchar('\n');
 232 }