8c8618f5e8
Rather small diff for the userland (in contrast to the kernel): - Some header file location/differences - Clean compilation on 64bit arch (identified by bento a long time ago) - ALTQ not (yet) available. Leave a switch for patchsets and future ... - most files can be used from the vendor branch Approved by: bms(in general)
532 lines
15 KiB
C
532 lines
15 KiB
C
/* $FreeBSD$ */
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/* $OpenBSD: pfctl_table.c,v 1.50 2003/08/29 21:47:36 cedric Exp $ */
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/*
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* Copyright (c) 2002 Cedric Berger
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/pfvar.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#if defined(__FreeBSD__)
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#include <inttypes.h>
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#else
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#define PRIu64 "llu"
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#endif
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#include "pfctl_parser.h"
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#include "pfctl.h"
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extern void usage(void);
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static int pfctl_table(int, char *[], char *, const char *, char *,
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const char *, const char *, int);
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static void print_table(struct pfr_table *, int, int);
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static void print_tstats(struct pfr_tstats *, int);
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static int load_addr(struct pfr_buffer *, int, char *[], char *, int);
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static void print_addrx(struct pfr_addr *, struct pfr_addr *, int);
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static void print_astats(struct pfr_astats *, int);
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static void radix_perror(void);
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static void xprintf(int, const char *, ...);
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static const char *stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
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{ "In/Block:", "In/Pass:", "In/XPass:" },
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{ "Out/Block:", "Out/Pass:", "Out/XPass:" }
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};
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#define RVTEST(fct) do { \
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if ((!(opts & PF_OPT_NOACTION) || \
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(opts & PF_OPT_DUMMYACTION)) && \
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(fct)) { \
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radix_perror(); \
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goto _error; \
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} \
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} while (0)
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#define CREATE_TABLE do { \
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table.pfrt_flags |= PFR_TFLAG_PERSIST; \
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RVTEST(pfr_add_tables(&table, 1, &nadd, flags)); \
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if (nadd) { \
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warn_namespace_collision(table.pfrt_name); \
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xprintf(opts, "%d table created", nadd); \
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if (opts & PF_OPT_NOACTION) \
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return (0); \
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} \
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table.pfrt_flags &= ~PFR_TFLAG_PERSIST; \
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} while(0)
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int
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pfctl_clear_tables(const char *anchor, const char *ruleset, int opts)
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{
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return pfctl_table(0, NULL, NULL, "-F", NULL, anchor, ruleset, opts);
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}
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int
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pfctl_show_tables(const char *anchor, const char *ruleset, int opts)
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{
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return pfctl_table(0, NULL, NULL, "-s", NULL, anchor, ruleset, opts);
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}
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int
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pfctl_command_tables(int argc, char *argv[], char *tname,
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const char *command, char *file, const char *anchor, const char *ruleset,
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int opts)
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{
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if (tname == NULL || command == NULL)
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usage();
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return pfctl_table(argc, argv, tname, command, file, anchor, ruleset,
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opts);
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}
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int
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pfctl_table(int argc, char *argv[], char *tname, const char *command,
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char *file, const char *anchor, const char *ruleset, int opts)
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{
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struct pfr_table table;
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struct pfr_buffer b, b2;
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struct pfr_addr *a, *a2;
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int nadd = 0, ndel = 0, nchange = 0, nzero = 0;
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int rv = 0, flags = 0, nmatch = 0;
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void *p;
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if (command == NULL)
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usage();
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if (opts & PF_OPT_NOACTION)
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flags |= PFR_FLAG_DUMMY;
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bzero(&b, sizeof(b));
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bzero(&b2, sizeof(b2));
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bzero(&table, sizeof(table));
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if (tname != NULL) {
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if (strlen(tname) >= PF_TABLE_NAME_SIZE)
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usage();
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if (strlcpy(table.pfrt_name, tname,
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sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
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errx(1, "pfctl_table: strlcpy");
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}
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if (strlcpy(table.pfrt_anchor, anchor,
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sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor) ||
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strlcpy(table.pfrt_ruleset, ruleset,
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sizeof(table.pfrt_ruleset)) >= sizeof(table.pfrt_ruleset))
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errx(1, "pfctl_table: strlcpy");
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if (!strcmp(command, "-F")) {
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if (argc || file != NULL)
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usage();
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RVTEST(pfr_clr_tables(&table, &ndel, flags));
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xprintf(opts, "%d tables deleted", ndel);
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} else if (!strcmp(command, "-s")) {
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b.pfrb_type = (opts & PF_OPT_VERBOSE2) ?
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PFRB_TSTATS : PFRB_TABLES;
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if (argc || file != NULL)
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usage();
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for (;;) {
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pfr_buf_grow(&b, b.pfrb_size);
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b.pfrb_size = b.pfrb_msize;
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if (opts & PF_OPT_VERBOSE2)
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RVTEST(pfr_get_tstats(&table,
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b.pfrb_caddr, &b.pfrb_size, flags));
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else
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RVTEST(pfr_get_tables(&table,
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b.pfrb_caddr, &b.pfrb_size, flags));
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if (b.pfrb_size <= b.pfrb_msize)
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break;
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}
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PFRB_FOREACH(p, &b)
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if (opts & PF_OPT_VERBOSE2)
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print_tstats(p, opts & PF_OPT_DEBUG);
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else
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print_table(p, opts & PF_OPT_VERBOSE,
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opts & PF_OPT_DEBUG);
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} else if (!strcmp(command, "kill")) {
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if (argc || file != NULL)
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usage();
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RVTEST(pfr_del_tables(&table, 1, &ndel, flags));
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xprintf(opts, "%d table deleted", ndel);
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} else if (!strcmp(command, "flush")) {
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if (argc || file != NULL)
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usage();
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RVTEST(pfr_clr_addrs(&table, &ndel, flags));
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xprintf(opts, "%d addresses deleted", ndel);
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} else if (!strcmp(command, "add")) {
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b.pfrb_type = PFRB_ADDRS;
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if (load_addr(&b, argc, argv, file, 0))
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goto _error;
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CREATE_TABLE;
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if (opts & PF_OPT_VERBOSE)
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flags |= PFR_FLAG_FEEDBACK;
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RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,
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&nadd, flags));
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xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
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if (opts & PF_OPT_VERBOSE)
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PFRB_FOREACH(a, &b)
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if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
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print_addrx(a, NULL,
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opts & PF_OPT_USEDNS);
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} else if (!strcmp(command, "delete")) {
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b.pfrb_type = PFRB_ADDRS;
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if (load_addr(&b, argc, argv, file, 0))
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goto _error;
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if (opts & PF_OPT_VERBOSE)
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flags |= PFR_FLAG_FEEDBACK;
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RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,
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&ndel, flags));
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xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
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if (opts & PF_OPT_VERBOSE)
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PFRB_FOREACH(a, &b)
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if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
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print_addrx(a, NULL,
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opts & PF_OPT_USEDNS);
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} else if (!strcmp(command, "replace")) {
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b.pfrb_type = PFRB_ADDRS;
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if (load_addr(&b, argc, argv, file, 0))
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goto _error;
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CREATE_TABLE;
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if (opts & PF_OPT_VERBOSE)
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flags |= PFR_FLAG_FEEDBACK;
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for (;;) {
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int sz2 = b.pfrb_msize;
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RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,
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&sz2, &nadd, &ndel, &nchange, flags));
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if (sz2 <= b.pfrb_msize) {
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b.pfrb_size = sz2;
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break;
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} else
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pfr_buf_grow(&b, sz2);
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}
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if (nadd)
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xprintf(opts, "%d addresses added", nadd);
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if (ndel)
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xprintf(opts, "%d addresses deleted", ndel);
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if (nchange)
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xprintf(opts, "%d addresses changed", nchange);
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if (!nadd && !ndel && !nchange)
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xprintf(opts, "no changes");
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if (opts & PF_OPT_VERBOSE)
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PFRB_FOREACH(a, &b)
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if ((opts & PF_OPT_VERBOSE2) || a->pfra_fback)
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print_addrx(a, NULL,
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opts & PF_OPT_USEDNS);
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} else if (!strcmp(command, "show")) {
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b.pfrb_type = (opts & PF_OPT_VERBOSE) ?
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PFRB_ASTATS : PFRB_ADDRS;
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if (argc || file != NULL)
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usage();
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for (;;) {
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pfr_buf_grow(&b, b.pfrb_size);
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b.pfrb_size = b.pfrb_msize;
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if (opts & PF_OPT_VERBOSE)
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RVTEST(pfr_get_astats(&table, b.pfrb_caddr,
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&b.pfrb_size, flags));
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else
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RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,
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&b.pfrb_size, flags));
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if (b.pfrb_size <= b.pfrb_msize)
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break;
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}
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PFRB_FOREACH(p, &b)
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if (opts & PF_OPT_VERBOSE)
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print_astats(p, opts & PF_OPT_USEDNS);
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else
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print_addrx(p, NULL, opts & PF_OPT_USEDNS);
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} else if (!strcmp(command, "test")) {
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b.pfrb_type = PFRB_ADDRS;
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b2.pfrb_type = PFRB_ADDRS;
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if (load_addr(&b, argc, argv, file, 1))
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goto _error;
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if (opts & PF_OPT_VERBOSE2) {
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flags |= PFR_FLAG_REPLACE;
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PFRB_FOREACH(a, &b)
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if (pfr_buf_add(&b2, a))
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err(1, "duplicate buffer");
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}
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RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,
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&nmatch, flags));
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xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
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if (opts & PF_OPT_VERBOSE && !(opts & PF_OPT_VERBOSE2))
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PFRB_FOREACH(a, &b)
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if (a->pfra_fback == PFR_FB_MATCH)
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print_addrx(a, NULL,
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opts & PF_OPT_USEDNS);
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if (opts & PF_OPT_VERBOSE2) {
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a2 = NULL;
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PFRB_FOREACH(a, &b) {
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a2 = pfr_buf_next(&b2, a2);
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print_addrx(a2, a, opts & PF_OPT_USEDNS);
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}
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}
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if (nmatch < b.pfrb_size)
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rv = 2;
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} else if (!strcmp(command, "zero")) {
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if (argc || file != NULL)
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usage();
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flags |= PFR_FLAG_ADDRSTOO;
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RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags));
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xprintf(opts, "%d table/stats cleared", nzero);
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} else
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warnx("pfctl_table: unknown command '%s'", command);
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goto _cleanup;
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_error:
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rv = -1;
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_cleanup:
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pfr_buf_clear(&b);
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pfr_buf_clear(&b2);
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return (rv);
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}
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void
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print_table(struct pfr_table *ta, int verbose, int debug)
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{
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if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE))
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return;
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if (verbose) {
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printf("%c%c%c%c%c%c\t%s",
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(ta->pfrt_flags & PFR_TFLAG_CONST) ? 'c' : '-',
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(ta->pfrt_flags & PFR_TFLAG_PERSIST) ? 'p' : '-',
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(ta->pfrt_flags & PFR_TFLAG_ACTIVE) ? 'a' : '-',
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(ta->pfrt_flags & PFR_TFLAG_INACTIVE) ? 'i' : '-',
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(ta->pfrt_flags & PFR_TFLAG_REFERENCED) ? 'r' : '-',
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(ta->pfrt_flags & PFR_TFLAG_REFDANCHOR) ? 'h' : '-',
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ta->pfrt_name);
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if (ta->pfrt_anchor[0])
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printf("\t%s", ta->pfrt_anchor);
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if (ta->pfrt_ruleset[0])
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printf(":%s", ta->pfrt_ruleset);
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puts("");
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} else
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puts(ta->pfrt_name);
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}
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void
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print_tstats(struct pfr_tstats *ts, int debug)
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{
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time_t time = ts->pfrts_tzero;
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int dir, op;
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if (!debug && !(ts->pfrts_flags & PFR_TFLAG_ACTIVE))
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return;
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print_table(&ts->pfrts_t, 1, debug);
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printf("\tAddresses: %d\n", ts->pfrts_cnt);
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printf("\tCleared: %s", ctime(&time));
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printf("\tReferences: [ Anchors: %-18d Rules: %-18d ]\n",
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ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
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ts->pfrts_refcnt[PFR_REFCNT_RULE]);
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printf("\tEvaluations: [ NoMatch: %-18"PRIu64" Match: %-18"PRIu64" ]\n",
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ts->pfrts_nomatch, ts->pfrts_match);
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for (dir = 0; dir < PFR_DIR_MAX; dir++)
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for (op = 0; op < PFR_OP_TABLE_MAX; op++)
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printf("\t%-12s [ Packets: %-18"PRIu64" Bytes: %-18"PRIu64" ]\n",
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stats_text[dir][op],
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ts->pfrts_packets[dir][op],
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ts->pfrts_bytes[dir][op]);
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}
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int
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load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
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int nonetwork)
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{
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while (argc--)
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if (append_addr(b, *argv++, nonetwork)) {
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if (errno)
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warn("cannot decode %s", argv[-1]);
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return (-1);
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}
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if (pfr_buf_load(b, file, nonetwork, append_addr)) {
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warn("cannot load %s", file);
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return (-1);
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}
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return (0);
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}
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void
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print_addrx(struct pfr_addr *ad, struct pfr_addr *rad, int dns)
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{
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char ch, buf[256] = "{error}";
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char fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y' };
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unsigned int fback, hostnet;
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fback = (rad != NULL) ? rad->pfra_fback : ad->pfra_fback;
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ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
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hostnet = (ad->pfra_af == AF_INET6) ? 128 : 32;
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inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
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printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
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if (ad->pfra_net < hostnet)
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printf("/%d", ad->pfra_net);
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if (rad != NULL && fback != PFR_FB_NONE) {
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if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
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errx(1, "print_addrx: strlcpy");
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inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
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printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
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if (rad->pfra_net < hostnet)
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printf("/%d", rad->pfra_net);
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}
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if (rad != NULL && fback == PFR_FB_NONE)
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printf("\t nomatch");
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if (dns && ad->pfra_net == hostnet) {
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char host[NI_MAXHOST];
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union sockaddr_union sa;
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strlcpy(host, "?", sizeof(host));
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bzero(&sa, sizeof(sa));
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sa.sa.sa_family = ad->pfra_af;
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if (sa.sa.sa_family == AF_INET) {
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sa.sa.sa_len = sizeof(sa.sin);
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sa.sin.sin_addr = ad->pfra_ip4addr;
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} else {
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sa.sa.sa_len = sizeof(sa.sin6);
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sa.sin6.sin6_addr = ad->pfra_ip6addr;
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}
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if (getnameinfo(&sa.sa, sa.sa.sa_len, host, sizeof(host),
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NULL, 0, NI_NAMEREQD) == 0)
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printf("\t(%s)", host);
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}
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printf("\n");
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}
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void
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print_astats(struct pfr_astats *as, int dns)
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{
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time_t time = as->pfras_tzero;
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int dir, op;
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print_addrx(&as->pfras_a, NULL, dns);
|
|
printf("\tCleared: %s", ctime(&time));
|
|
for (dir = 0; dir < PFR_DIR_MAX; dir++)
|
|
for (op = 0; op < PFR_OP_ADDR_MAX; op++)
|
|
printf("\t%-12s [ Packets: %-18"PRIu64" Bytes: %-18"PRIu64" ]\n",
|
|
stats_text[dir][op],
|
|
as->pfras_packets[dir][op],
|
|
as->pfras_bytes[dir][op]);
|
|
}
|
|
|
|
void
|
|
radix_perror(void)
|
|
{
|
|
extern char *__progname;
|
|
fprintf(stderr, "%s: %s.\n", __progname, pfr_strerror(errno));
|
|
}
|
|
|
|
int
|
|
pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
|
|
const char *ruleset, struct pfr_buffer *ab, u_int32_t ticket)
|
|
{
|
|
struct pfr_table tbl;
|
|
|
|
bzero(&tbl, sizeof(tbl));
|
|
if (strlcpy(tbl.pfrt_name, name,
|
|
sizeof(tbl.pfrt_name)) >= sizeof(tbl.pfrt_name) ||
|
|
strlcpy(tbl.pfrt_anchor, anchor,
|
|
sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor) ||
|
|
strlcpy(tbl.pfrt_ruleset, ruleset,
|
|
sizeof(tbl.pfrt_ruleset)) >= sizeof(tbl.pfrt_ruleset))
|
|
errx(1, "pfctl_define_table: strlcpy");
|
|
tbl.pfrt_flags = flags;
|
|
|
|
return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL,
|
|
NULL, ticket, addrs ? PFR_FLAG_ADDRSTOO : 0);
|
|
}
|
|
|
|
void
|
|
warn_namespace_collision(const char *filter)
|
|
{
|
|
struct pfr_buffer b;
|
|
struct pfr_table *t;
|
|
const char *name = NULL, *lastcoll;
|
|
int coll = 0;
|
|
|
|
bzero(&b, sizeof(b));
|
|
b.pfrb_type = PFRB_TABLES;
|
|
for (;;) {
|
|
pfr_buf_grow(&b, b.pfrb_size);
|
|
b.pfrb_size = b.pfrb_msize;
|
|
if (pfr_get_tables(NULL, b.pfrb_caddr,
|
|
&b.pfrb_size, PFR_FLAG_ALLRSETS))
|
|
err(1, "pfr_get_tables");
|
|
if (b.pfrb_size <= b.pfrb_msize)
|
|
break;
|
|
}
|
|
PFRB_FOREACH(t, &b) {
|
|
if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE))
|
|
continue;
|
|
if (filter != NULL && strcmp(filter, t->pfrt_name))
|
|
continue;
|
|
if (!t->pfrt_anchor[0])
|
|
name = t->pfrt_name;
|
|
else if (name != NULL && !strcmp(name, t->pfrt_name)) {
|
|
coll++;
|
|
lastcoll = name;
|
|
name = NULL;
|
|
}
|
|
}
|
|
if (coll == 1)
|
|
warnx("warning: namespace collision with <%s> global table.",
|
|
lastcoll);
|
|
else if (coll > 1)
|
|
warnx("warning: namespace collisions with %d global tables.",
|
|
coll);
|
|
pfr_buf_clear(&b);
|
|
}
|
|
|
|
void
|
|
xprintf(int opts, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
|
|
if (opts & PF_OPT_QUIET)
|
|
return;
|
|
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
|
|
if (opts & PF_OPT_DUMMYACTION)
|
|
fprintf(stderr, " (dummy).\n");
|
|
else if (opts & PF_OPT_NOACTION)
|
|
fprintf(stderr, " (syntax only).\n");
|
|
else
|
|
fprintf(stderr, ".\n");
|
|
}
|