1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Ryan McBride. All rights reserved. 5 * Copyright (c) 2004 Max Laier. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/ioctl.h> 33 #include <sys/socket.h> 34 35 #include <net/if.h> 36 #include <netinet/in.h> 37 #include <net/pfvar.h> 38 #include <net/if_pfsync.h> 39 #include <net/route.h> 40 #include <arpa/inet.h> 41 42 #include <err.h> 43 #include <netdb.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 #include "ifconfig.h" 50 51 void setpfsync_syncdev(const char *, int, int, const struct afswtch *); 52 void unsetpfsync_syncdev(const char *, int, int, const struct afswtch *); 53 void setpfsync_syncpeer(const char *, int, int, const struct afswtch *); 54 void unsetpfsync_syncpeer(const char *, int, int, const struct afswtch *); 55 void setpfsync_syncpeer(const char *, int, int, const struct afswtch *); 56 void setpfsync_maxupd(const char *, int, int, const struct afswtch *); 57 void setpfsync_defer(const char *, int, int, const struct afswtch *); 58 void pfsync_status(int); 59 60 void 61 setpfsync_syncdev(const char *val, int d, int s, const struct afswtch *rafp) 62 { 63 struct pfsyncreq preq; 64 65 bzero((char *)&preq, sizeof(struct pfsyncreq)); 66 ifr.ifr_data = (caddr_t)&preq; 67 68 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 69 err(1, "SIOCGETPFSYNC"); 70 71 strlcpy(preq.pfsyncr_syncdev, val, sizeof(preq.pfsyncr_syncdev)); 72 73 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 74 err(1, "SIOCSETPFSYNC"); 75 } 76 77 /* ARGSUSED */ 78 void 79 unsetpfsync_syncdev(const char *val, int d, int s, const struct afswtch *rafp) 80 { 81 struct pfsyncreq preq; 82 83 bzero((char *)&preq, sizeof(struct pfsyncreq)); 84 ifr.ifr_data = (caddr_t)&preq; 85 86 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 87 err(1, "SIOCGETPFSYNC"); 88 89 bzero((char *)&preq.pfsyncr_syncdev, sizeof(preq.pfsyncr_syncdev)); 90 91 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 92 err(1, "SIOCSETPFSYNC"); 93 } 94 95 /* ARGSUSED */ 96 void 97 setpfsync_syncpeer(const char *val, int d, int s, const struct afswtch *rafp) 98 { 99 struct pfsyncreq preq; 100 struct addrinfo hints, *peerres; 101 int ecode; 102 103 bzero((char *)&preq, sizeof(struct pfsyncreq)); 104 ifr.ifr_data = (caddr_t)&preq; 105 106 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 107 err(1, "SIOCGETPFSYNC"); 108 109 memset(&hints, 0, sizeof(hints)); 110 hints.ai_family = AF_INET; 111 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 112 113 if ((ecode = getaddrinfo(val, NULL, &hints, &peerres)) != 0) 114 errx(1, "error in parsing address string: %s", 115 gai_strerror(ecode)); 116 117 if (peerres->ai_addr->sa_family != AF_INET) 118 errx(1, "only IPv4 addresses supported for the syncpeer"); 119 120 preq.pfsyncr_syncpeer.s_addr = ((struct sockaddr_in *) 121 peerres->ai_addr)->sin_addr.s_addr; 122 123 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 124 err(1, "SIOCSETPFSYNC"); 125 freeaddrinfo(peerres); 126 } 127 128 /* ARGSUSED */ 129 void 130 unsetpfsync_syncpeer(const char *val, int d, int s, const struct afswtch *rafp) 131 { 132 struct pfsyncreq preq; 133 134 bzero((char *)&preq, sizeof(struct pfsyncreq)); 135 ifr.ifr_data = (caddr_t)&preq; 136 137 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 138 err(1, "SIOCGETPFSYNC"); 139 140 preq.pfsyncr_syncpeer.s_addr = 0; 141 142 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 143 err(1, "SIOCSETPFSYNC"); 144 } 145 146 /* ARGSUSED */ 147 void 148 setpfsync_maxupd(const char *val, int d, int s, const struct afswtch *rafp) 149 { 150 struct pfsyncreq preq; 151 int maxupdates; 152 153 maxupdates = atoi(val); 154 if ((maxupdates < 0) || (maxupdates > 255)) 155 errx(1, "maxupd %s: out of range", val); 156 157 memset((char *)&preq, 0, sizeof(struct pfsyncreq)); 158 ifr.ifr_data = (caddr_t)&preq; 159 160 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 161 err(1, "SIOCGETPFSYNC"); 162 163 preq.pfsyncr_maxupdates = maxupdates; 164 165 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 166 err(1, "SIOCSETPFSYNC"); 167 } 168 169 /* ARGSUSED */ 170 void 171 setpfsync_defer(const char *val, int d, int s, const struct afswtch *rafp) 172 { 173 struct pfsyncreq preq; 174 175 memset((char *)&preq, 0, sizeof(struct pfsyncreq)); 176 ifr.ifr_data = (caddr_t)&preq; 177 178 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 179 err(1, "SIOCGETPFSYNC"); 180 181 preq.pfsyncr_defer = d; 182 if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1) 183 err(1, "SIOCSETPFSYNC"); 184 } 185 186 void 187 pfsync_status(int s) 188 { 189 struct pfsyncreq preq; 190 191 bzero((char *)&preq, sizeof(struct pfsyncreq)); 192 ifr.ifr_data = (caddr_t)&preq; 193 194 if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1) 195 return; 196 197 if (preq.pfsyncr_syncdev[0] != '\0' || 198 preq.pfsyncr_syncpeer.s_addr != htonl(INADDR_PFSYNC_GROUP)) 199 printf("\t"); 200 201 if (preq.pfsyncr_syncdev[0] != '\0') 202 printf("pfsync: syncdev: %s ", preq.pfsyncr_syncdev); 203 if (preq.pfsyncr_syncpeer.s_addr != htonl(INADDR_PFSYNC_GROUP)) 204 printf("syncpeer: %s ", inet_ntoa(preq.pfsyncr_syncpeer)); 205 206 if (preq.pfsyncr_syncdev[0] != '\0' || 207 preq.pfsyncr_syncpeer.s_addr != htonl(INADDR_PFSYNC_GROUP)) { 208 printf("maxupd: %d ", preq.pfsyncr_maxupdates); 209 printf("defer: %s\n", preq.pfsyncr_defer ? "on" : "off"); 210 } 211 } 212 213 static struct cmd pfsync_cmds[] = { 214 DEF_CMD_ARG("syncdev", setpfsync_syncdev), 215 DEF_CMD("-syncdev", 1, unsetpfsync_syncdev), 216 DEF_CMD_ARG("syncif", setpfsync_syncdev), 217 DEF_CMD("-syncif", 1, unsetpfsync_syncdev), 218 DEF_CMD_ARG("syncpeer", setpfsync_syncpeer), 219 DEF_CMD("-syncpeer", 1, unsetpfsync_syncpeer), 220 DEF_CMD_ARG("maxupd", setpfsync_maxupd), 221 DEF_CMD("defer", 1, setpfsync_defer), 222 DEF_CMD("-defer", 0, setpfsync_defer), 223 }; 224 static struct afswtch af_pfsync = { 225 .af_name = "af_pfsync", 226 .af_af = AF_UNSPEC, 227 .af_other_status = pfsync_status, 228 }; 229 230 static __constructor void 231 pfsync_ctor(void) 232 { 233 int i; 234 235 for (i = 0; i < nitems(pfsync_cmds); i++) 236 cmd_register(&pfsync_cmds[i]); 237 af_register(&af_pfsync); 238 } 239