sbin/ipfw3/ipfw3set.c

   1 /*
   2  * Copyright (c) 2014 - 2018 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Bill Yuan <bycn82@dragonflybsd.org>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/mbuf.h>
  37 #include <sys/socket.h>
  38 #include <sys/sockio.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/time.h>
  41 #include <sys/wait.h>
  42
  43 #include <arpa/inet.h>
  44 #include <ctype.h>
  45 #include <dlfcn.h>
  46 #include <err.h>
  47 #include <errno.h>
  48 #include <grp.h>
  49 #include <limits.h>
  50 #include <netdb.h>
  51 #include <pwd.h>
  52 #include <sysexits.h>
  53 #include <signal.h>
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <stdarg.h>
  57 #include <string.h>
  58 #include <timeconv.h>
  59 #include <unistd.h>
  60
  61 #include <netinet/in.h>
  62 #include <netinet/in_systm.h>
  63 #include <netinet/ip.h>
  64 #include <netinet/ip_icmp.h>
  65 #include <netinet/tcp.h>
  66 #include <net/if.h>
  67 #include <net/if_dl.h>
  68 #include <net/route.h>
  69 #include <net/ethernet.h>
  70
  71 #include <net/ipfw3/ip_fw3.h>
  72 #include <net/ipfw3_basic/ip_fw3_table.h>
  73 #include <net/ipfw3_basic/ip_fw3_sync.h>
  74 #include <net/ipfw3_basic/ip_fw3_basic.h>
  75 #include <net/ipfw3_nat/ip_fw3_nat.h>
  76 #include <net/dummynet3/ip_dummynet3.h>
  77
  78 #include "ipfw3.h"
  79 #include "ipfw3set.h"
  80
  81 void
  82 set_toggle(int ac, char **av)
  83 {
  84         int error, num;
  85
  86         NEXT_ARG;
  87
  88         num = atoi(av[0]);
  89         if (num > 0 && num < 32) {
  90                 error = do_set_x(IP_FW_SET_TOGGLE, &num, sizeof num);
  91                 if (error) {
  92                         err(EX_OSERR, "getsockopt(IP_FW_SET_TOGGLE)");
  93                 }
  94         } else {
  95                 errx(EX_USAGE, "invalid set %s", *av);
  96         }
  97 }
  98
  99 void
 100 set_show(int ac, char **av)
 101 {
 102         int i, sets = 0, len;
 103
 104         len = sizeof(int);
 105         if (do_get_x(IP_FW_SET_GET, &sets, &len) < 0) {
 106                 err(EX_OSERR, "getsockopt(IP_FW_SET_GET)");
 107         }
 108
 109         printf("disable:");
 110         for (i = 0; i < 32; i++) {
 111                 if (sets & (1<<i)) {
 112                         printf(" %d", i);
 113                 }
 114         }
 115         printf("\n");
 116         printf("enable:");
 117         for (i = 0; i < 32; i++) {
 118                 if (!(sets & (1<<i))) {
 119                         printf(" %d", i);
 120                 }
 121         }
 122         printf("\n");
 123 }
 124
 125 void
 126 set_swap(int ac, char **av)
 127 {
 128         int num[2], error;
 129
 130         NEXT_ARG;
 131
 132         if (ac != 2)
 133                 errx(EX_USAGE, "set swap needs 2 set numbers");
 134
 135         num[0] = atoi(av[0]);
 136         num[1] = atoi(av[1]);
 137         if (num[0] < 1 || num[0] > 31) {
 138                  errx(EX_DATAERR, "invalid set number %s", av[0]);
 139         }
 140         if (num[1] < 1 || num[1] > 31) {
 141                  errx(EX_DATAERR, "invalid set number %s", av[1]);
 142         }
 143         if (num[0] == num[1]) {
 144                  errx(EX_DATAERR, "same set numbers %s", av[0]);
 145         }
 146
 147         error = do_set_x(IP_FW_SET_SWAP, num, sizeof(num));
 148         if (error) {
 149                 err(EX_OSERR, "getsockopt(IP_FW_SET_SWAP)");
 150         }
 151 }
 152
 153 void
 154 set_move_rule(int ac, char **av)
 155 {
 156         int num[2], error;
 157
 158         NEXT_ARG;
 159
 160         if (ac != 2)
 161                 errx(EX_USAGE, "move rule needs 2 numbers");
 162
 163         num[0] = atoi(av[0]);
 164         num[1] = atoi(av[1]);
 165         if (num[0] < 1 || num[0] > 65534) {
 166                  errx(EX_DATAERR, "invalid rule number %s", av[0]);
 167         }
 168         if (num[1] < 1 || num[1] > 31) {
 169                  errx(EX_DATAERR, "invalid set number %s", av[1]);
 170         }
 171         if (num[0] == num[1]) {
 172                  errx(EX_DATAERR, "same set numbers %s", av[0]);
 173         }
 174
 175         error = do_set_x(IP_FW_SET_MOVE_RULE, num, sizeof(num));
 176         if (error) {
 177                 err(EX_OSERR, "getsockopt(IP_FW_SET_MOVE_RULE)");
 178         }
 179 }
 180
 181 void
 182 set_move_set(int ac, char **av)
 183 {
 184         int num[2], error;
 185
 186         NEXT_ARG;
 187
 188         if (ac != 2)
 189                 errx(EX_USAGE, "move set needs 2 set numbers");
 190
 191         num[0] = atoi(av[0]);
 192         num[1] = atoi(av[1]);
 193         if (num[0] < 1 || num[0] > 31) {
 194                  errx(EX_DATAERR, "invalid set number %s", av[0]);
 195         }
 196         if (num[1] < 1 || num[1] > 31) {
 197                  errx(EX_DATAERR, "invalid set number %s", av[1]);
 198         }
 199         if (num[0] == num[1]) {
 200                  errx(EX_DATAERR, "same set numbers %s", av[0]);
 201         }
 202
 203         error = do_set_x(IP_FW_SET_MOVE_SET, num, sizeof(num));
 204         if (error) {
 205                 err(EX_OSERR, "getsockopt(IP_FW_SET_MOVE_SET)");
 206         }
 207 }
 208
 209 void
 210 set_flush(int ac, char **av)
 211 {
 212         int error, num;
 213
 214         NEXT_ARG;
 215
 216         num = atoi(av[0]);
 217         if (num > 0 && num < 32) {
 218                 error = do_set_x(IP_FW_SET_FLUSH, &num, sizeof num);
 219                 if (error) {
 220                         err(EX_OSERR, "getsockopt(IP_FW_SET_FLUSH)");
 221                 }
 222         } else {
 223                 errx(EX_USAGE, "invalid set %s", *av);
 224         }
 225 }
 226 /*
 227  * ipfw3 set show
 228  * ipfw3 set <set num> toggle
 229  * ipfw3 set swap <old set num> <new set num>
 230  * ipfw3 set move set <old set num> to <new set num>
 231  * ipfw3 set move rule <rule num> to <set num>
 232  * ipfw3 set <set num> flush
 233  */
 234 void
 235 set_main(int ac, char **av)
 236 {
 237         SWAP_ARG;
 238         NEXT_ARG;
 239
 240         if (!ac)
 241                 errx(EX_USAGE, "set needs command");
 242         if (!strncmp(*av, "show", strlen(*av)) ) {
 243                 set_show(ac, av);
 244         } else if (!strncmp(*av, "swap", strlen(*av))) {
 245                 set_swap(ac, av);
 246         } else if (!strncmp(*av, "move", strlen(*av))) {
 247                 NEXT_ARG;
 248                 if (!strncmp(*av, "set", strlen(*av)) ) {
 249                         set_move_set(ac, av);
 250                 } else if (!strncmp(*av, "rule", strlen(*av)) ) {
 251                         set_move_rule(ac, av);
 252                 } else {
 253                         errx(EX_USAGE, "invalid move command %s", *av);
 254                 }
 255
 256         } else if (!strncmp(*av, "toggle", strlen(*av))) {
 257                 set_toggle(ac, av);
 258         } else if (!strncmp(*av, "flush", strlen(*av))) {
 259                 set_flush(ac, av);
 260         } else {
 261                 errx(EX_USAGE, "invalid set command %s", *av);
 262         }
 263 }
 264