1 /*- 2 * Copyright (c) 1996-1999 Whistle Communications, Inc. 3 * All rights reserved. 4 * 5 * Subject to the following obligations and disclaimer of warranty, use and 6 * redistribution of this software, in source or object code forms, with or 7 * without modifications are expressly permitted by Whistle Communications; 8 * provided, however, that: 9 * 1. Any and all reproductions of the source or object code must include the 10 * copyright notice above and the following disclaimer of warranties; and 11 * 2. No rights are granted, in any manner or form, to use Whistle 12 * Communications, Inc. trademarks, including the mark "WHISTLE 13 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 14 * such appears in the above copyright notice or in the software. 15 * 16 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 17 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 18 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 19 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 21 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 22 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 23 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 24 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 25 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 26 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 27 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 32 * OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/param.h> 39 #include <sys/queue.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/protosw.h> 43 #include <sys/linker.h> 44 45 #include <net/route.h> 46 47 #include <netgraph.h> 48 #include <netgraph/ng_message.h> 49 #include <netgraph/ng_socket.h> 50 #include <netgraph/ng_socketvar.h> 51 52 #include <nlist.h> 53 #include <errno.h> 54 #include <stdint.h> 55 #include <stdio.h> 56 #include <string.h> 57 #include <unistd.h> 58 #include <err.h> 59 #include "netstat.h" 60 61 static int first = 1; 62 static int csock = -1; 63 64 void 65 netgraphprotopr(u_long off, const char *name, int af1 __unused, 66 int proto __unused) 67 { 68 struct ngpcb *this, *next; 69 struct ngpcb ngpcb; 70 struct ngsock info; 71 struct socket sockb; 72 int debug = 1; 73 74 /* If symbol not found, try looking in the KLD module */ 75 if (off == 0) { 76 const char *const modname = "ng_socket.ko"; 77 /* XXX We should get "mpath" from "sysctl kern.module_path" */ 78 const char *mpath[] = { "/", "/boot/", "/modules/", NULL }; 79 struct nlist sym[] = { { .n_name = "_ngsocklist" }, 80 { .n_name = NULL } }; 81 const char **pre; 82 struct kld_file_stat ks; 83 int fileid; 84 85 /* Can't do this for core dumps. */ 86 if (!live) 87 return; 88 89 /* See if module is loaded */ 90 if ((fileid = kldfind(modname)) < 0) { 91 if (debug) 92 warn("kldfind(%s)", modname); 93 return; 94 } 95 96 /* Get module info */ 97 memset(&ks, 0, sizeof(ks)); 98 ks.version = sizeof(struct kld_file_stat); 99 if (kldstat(fileid, &ks) < 0) { 100 if (debug) 101 warn("kldstat(%d)", fileid); 102 return; 103 } 104 105 /* Get symbol table from module file */ 106 for (pre = mpath; *pre; pre++) { 107 char path[MAXPATHLEN]; 108 109 snprintf(path, sizeof(path), "%s%s", *pre, modname); 110 if (nlist(path, sym) == 0) 111 break; 112 } 113 114 /* Did we find it? */ 115 if (sym[0].n_value == 0) { 116 if (debug) 117 warnx("%s not found", modname); 118 return; 119 } 120 121 /* Symbol found at load address plus symbol offset */ 122 off = (u_long) ks.address + sym[0].n_value; 123 } 124 125 /* Get pointer to first socket */ 126 kread(off, (char *)&this, sizeof(this)); 127 128 /* Get my own socket node */ 129 if (csock == -1) 130 NgMkSockNode(NULL, &csock, NULL); 131 132 for (; this != NULL; this = next) { 133 u_char rbuf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)]; 134 struct ng_mesg *resp = (struct ng_mesg *) rbuf; 135 struct nodeinfo *ni = (struct nodeinfo *) resp->data; 136 char path[64]; 137 138 /* Read in ngpcb structure */ 139 kread((u_long)this, (char *)&ngpcb, sizeof(ngpcb)); 140 next = LIST_NEXT(&ngpcb, socks); 141 142 /* Read in socket structure */ 143 kread((u_long)ngpcb.ng_socket, (char *)&sockb, sizeof(sockb)); 144 145 /* Check type of socket */ 146 if (strcmp(name, "ctrl") == 0 && ngpcb.type != NG_CONTROL) 147 continue; 148 if (strcmp(name, "data") == 0 && ngpcb.type != NG_DATA) 149 continue; 150 151 /* Do headline */ 152 if (first) { 153 printf("Netgraph sockets\n"); 154 if (Aflag) 155 printf("%-8.8s ", "PCB"); 156 printf("%-5.5s %-6.6s %-6.6s %-14.14s %s\n", 157 "Type", "Recv-Q", "Send-Q", 158 "Node Address", "#Hooks"); 159 first = 0; 160 } 161 162 /* Show socket */ 163 if (Aflag) 164 printf("%8lx ", (u_long) this); 165 printf("%-5.5s %6u %6u ", 166 name, sockb.so_rcv.sb_cc, sockb.so_snd.sb_cc); 167 168 /* Get ngsock structure */ 169 if (ngpcb.sockdata == 0) /* unconnected data socket */ 170 goto finish; 171 kread((u_long)ngpcb.sockdata, (char *)&info, sizeof(info)); 172 173 /* Get info on associated node */ 174 if (info.node == 0 || csock == -1) 175 goto finish; 176 snprintf(path, sizeof(path), "[%lx]:", (u_long) info.node); 177 if (NgSendMsg(csock, path, 178 NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0) 179 goto finish; 180 if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) 181 goto finish; 182 183 /* Display associated node info */ 184 if (*ni->name != '\0') 185 snprintf(path, sizeof(path), "%s:", ni->name); 186 printf("%-14.14s %4d", path, ni->hooks); 187 finish: 188 putchar('\n'); 189 } 190 } 191 192