network_cmds/netstat.tproj/unix.c

   1 /*
   2  * Copyright (c) 2008-2009 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 /*
  62  * Display protocol blocks in the unix domain.
  63  */
  64 #include <sys/param.h>
  65 #include <sys/queue.h>
  66 #include <sys/socket.h>
  67 #include <sys/socketvar.h>
  68 #include <sys/mbuf.h>
  69 #include <sys/sysctl.h>
  70 #include <sys/un.h>
  71 #include <sys/unpcb.h>
  72
  73 #include <netinet/in.h>
  74
  75 #include <errno.h>
  76 #include <err.h>
  77 #include <stddef.h>
  78 #include <stdio.h>
  79 #include <stdlib.h>
  80 #include "netstat.h"
  81
  82 #ifdef __APPLE__
  83 #include <TargetConditionals.h>
  84 #endif
  85
  86 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
  87 static  void unixdomainpr __P((struct xunpcb64 *, struct xsocket64 *));
  88 #else
  89 static  void unixdomainpr __P((struct xunpcb *, struct xsocket *));
  90 #endif
  91
  92 static  const char *const socktype[] =
  93     { "#0", "stream", "dgram", "raw" };
  94
  95 void
  96 unixpr()
  97 {
  98         char    *buf;
  99         int     type;
 100         size_t  len;
 101         struct  xunpgen *xug, *oxug;
 102 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 103         struct  xsocket64 *so;
 104         struct  xunpcb64 *xunp;
 105         char mibvar[sizeof "net.local.seqpacket.pcblist64"];
 106 #else
 107         struct  xsocket *so;
 108         struct  xunpcb *xunp;
 109         char mibvar[sizeof "net.local.seqpacket.pcblist"];
 110 #endif
 111
 112         for (type = SOCK_STREAM; type <= SOCK_RAW; type++) {
 113 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 114                 snprintf(mibvar, sizeof(mibvar), "net.local.%s.pcblist64", socktype[type]);
 115 #else
 116                 snprintf(mibvar, sizeof(mibvar), "net.local.%s.pcblist", socktype[type]);
 117 #endif
 118                 len = 0;
 119                 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 120                         if (errno != ENOENT)
 121                                 warn("sysctl: %s", mibvar);
 122                         continue;
 123                 }
 124                 if ((buf = malloc(len)) == 0) {
 125                         warn("malloc %lu bytes", (u_long)len);
 126                         return;
 127                 }
 128                 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 129                         warn("sysctl: %s", mibvar);
 130                         free(buf);
 131                         return;
 132                 }
 133
 134                 oxug = xug = (struct xunpgen *)buf;
 135                 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
 136                      xug->xug_len > sizeof(struct xunpgen);
 137                      xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
 138 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 139                         xunp = (struct xunpcb64 *)xug;
 140 #else
 141                         xunp = (struct xunpcb *)xug;
 142 #endif
 143                         so = &xunp->xu_socket;
 144
 145                         /* Ignore PCBs which were freed during copyout. */
 146 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 147                         if (xunp->xunp_gencnt > oxug->xug_gen)
 148 #else
 149                         if (xunp->xu_unp.unp_gencnt > oxug->xug_gen)
 150 #endif
 151                                 continue;
 152                         unixdomainpr(xunp, so);
 153                 }
 154                 if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
 155                         if (oxug->xug_count > xug->xug_count) {
 156                                 printf("Some %s sockets may have been deleted.\n",
 157                                        socktype[type]);
 158                         } else if (oxug->xug_count < xug->xug_count) {
 159                                 printf("Some %s sockets may have been created.\n",
 160                                socktype[type]);
 161                         } else {
 162                                 printf("Some %s sockets may have been created or deleted\n",
 163                                socktype[type]);
 164                         }
 165                 }
 166                 free(buf);
 167         }
 168 }
 169
 170 static void
 171 unixdomainpr(xunp, so)
 172 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 173         struct xunpcb64 *xunp;
 174         struct xsocket64 *so;
 175 #else
 176         struct xunpcb *xunp;
 177         struct xsocket *so;
 178 #endif
 179 {
 180 #if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 181         struct unpcb *unp;
 182 #endif
 183         struct sockaddr_un *sa;
 184         static int first = 1;
 185
 186 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 187         sa = &xunp->xu_addr;
 188 #else
 189         unp = &xunp->xu_unp;
 190         if (unp->unp_addr)
 191                 sa = &xunp->xu_addr;
 192         else
 193                 sa = (struct sockaddr_un *)0;
 194 #endif
 195
 196         if (first) {
 197                 printf("Active LOCAL (UNIX) domain sockets\n");
 198                 printf(
 199 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 200 "%-16.16s %-6.6s %-6.6s %-6.6s %16.16s %16.16s %16.16s %16.16s Addr\n",
 201 #else
 202 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
 203 #endif
 204                     "Address", "Type", "Recv-Q", "Send-Q",
 205                     "Inode", "Conn", "Refs", "Nextref");
 206                 first = 0;
 207         }
 208 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 209         printf("%16lx %-6.6s %6u %6u %16lx %16lx %16lx %16lx",
 210                (long)xunp->xu_unpp, socktype[so->so_type], so->so_rcv.sb_cc,
 211                so->so_snd.sb_cc,
 212                (long)xunp->xunp_vnode, (long)xunp->xunp_conn,
 213                (long)xunp->xunp_refs, (long)xunp->xunp_reflink.le_next);
 214 #else
 215         printf("%8lx %-6.6s %6u %6u %8lx %8lx %8lx %8lx",
 216                (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
 217                so->so_snd.sb_cc,
 218                (long)unp->unp_vnode, (long)unp->unp_conn,
 219                (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next);
 220 #endif
 221
 222 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
 223         if (sa->sun_len)
 224 #else
 225         if (sa)
 226 #endif
 227                 printf(" %.*s",
 228                     (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),
 229                     sa->sun_path);
 230         putchar('\n');
 231 }