Bug Summary

File:src/sbin/pfctl/pfctl_table.c
Warning:line 154, column 7
Null pointer passed as 1st argument to string comparison function

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name pfctl_table.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sbin/pfctl/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/sbin/pfctl -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -Wno-uninitialized -fdebug-compilation-dir=/usr/src/sbin/pfctl/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c /usr/src/sbin/pfctl/pfctl_table.c
1/* $OpenBSD: pfctl_table.c,v 1.84 2020/01/15 22:38:31 kn Exp $ */
2
3/*
4 * Copyright (c) 2002 Cedric Berger
5 * 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 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33#include <sys/types.h>
34#include <sys/ioctl.h>
35#include <sys/socket.h>
36
37#include <netinet/in.h>
38#include <arpa/inet.h>
39#include <net/if.h>
40#include <net/pfvar.h>
41
42#include <ctype.h>
43#include <err.h>
44#include <errno(*__errno()).h>
45#include <netdb.h>
46#include <stdarg.h>
47#include <stdio.h>
48#include <stdlib.h>
49#include <string.h>
50#include <time.h>
51#include <limits.h>
52
53#include "pfctl_parser.h"
54#include "pfctl.h"
55
56extern void usage(void);
57static void print_table(struct pfr_table *, int, int);
58static void print_tstats(struct pfr_tstats *, int);
59static int load_addr(struct pfr_buffer *, int, char *[], char *, int, int);
60static void print_addrx(struct pfr_addr *, struct pfr_addr *, int);
61static void print_astats(struct pfr_astats *, int);
62static void xprintf(int, const char *, ...);
63static void print_iface(struct pfi_kif *, int);
64
65static const char *stats_text[PFR_DIR_MAX][PFR_OP_TABLE_MAX] = {
66 { "In/Block:", "In/Match:", "In/Pass:", "In/XPass:" },
67 { "Out/Block:", "Out/Match:", "Out/Pass:", "Out/XPass:" }
68};
69
70static const char *istats_text[2][2][2] = {
71 { { "In4/Pass:", "In4/Block:" }, { "Out4/Pass:", "Out4/Block:" } },
72 { { "In6/Pass:", "In6/Block:" }, { "Out6/Pass:", "Out6/Block:" } }
73};
74
75#define RVTEST(fct)do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(fct)) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0) do { \
76 if ((!(opts & PF_OPT_NOACTION0x00008) || \
77 (opts & PF_OPT_DUMMYACTION0x00100)) && \
78 (fct)) { \
79 if ((opts & PF_OPT_RECURSE0x04000) == 0) \
80 warnx("%s", pf_strerror(errno(*__errno()))); \
81 goto _error; \
82 } \
83 } while (0)
84
85#define CREATE_TABLEdo { warn_duplicate_tables(table.pfrt_name, table.pfrt_anchor
); table.pfrt_flags |= 0x00000001; if ((!(opts & 0x00008)
|| (opts & 0x00100)) && (pfr_add_tables(&table
, 1, &nadd, flags)) && ((*__errno()) != 1)) { warnx
("%s", pf_strerror((*__errno()))); goto _error; } if (nadd) {
xprintf(opts, "%d table created", nadd); if (opts & 0x00008
) return (0); } table.pfrt_flags &= ~0x00000001; } while(
0) do { \
86 warn_duplicate_tables(table.pfrt_name, \
87 table.pfrt_anchor); \
88 table.pfrt_flags |= PFR_TFLAG_PERSIST0x00000001; \
89 if ((!(opts & PF_OPT_NOACTION0x00008) || \
90 (opts & PF_OPT_DUMMYACTION0x00100)) && \
91 (pfr_add_tables(&table, 1, &nadd, flags)) && \
92 (errno(*__errno()) != EPERM1)) { \
93 warnx("%s", pf_strerror(errno(*__errno()))); \
94 goto _error; \
95 } \
96 if (nadd) { \
97 xprintf(opts, "%d table created", nadd); \
98 if (opts & PF_OPT_NOACTION0x00008) \
99 return (0); \
100 } \
101 table.pfrt_flags &= ~PFR_TFLAG_PERSIST0x00000001; \
102 } while(0)
103
104int
105pfctl_clear_tables(const char *anchor, int opts)
106{
107 int rv;
108
109 if ((rv = pfctl_table(0, NULL((void *)0), NULL((void *)0), "-F", NULL((void *)0), anchor, opts)) == -1) {
110 if ((opts & PF_OPT_IGNFAIL0x10000) == 0)
111 exit(1);
112 }
113
114 return (rv);
115}
116
117void
118pfctl_show_tables(const char *anchor, int opts)
119{
120 if (pfctl_table(0, NULL((void *)0), NULL((void *)0), "-s", NULL((void *)0), anchor, opts) == -1)
121 exit(1);
122}
123
124int
125pfctl_table(int argc, char *argv[], char *tname, const char *command,
126 char *file, const char *anchor, int opts)
127{
128 struct pfr_table table;
129 struct pfr_buffer b, b2;
130 struct pfr_addr *a, *a2;
131 int nadd = 0, ndel = 0, nchange = 0, nzero = 0;
132 int rv = 0, flags = 0, nmatch = 0;
133 void *p;
134
135 if (command == NULL((void *)0))
1
Assuming 'command' is equal to NULL
→
2
←
Taking true branch
→
136 usage();
137 if (opts & PF_OPT_NOACTION0x00008)
3
←
Assuming the condition is false
→
4
←
Taking false branch
→
138 flags |= PFR_FLAG_DUMMY0x00000002;
139
140 bzero(&b, sizeof(b));
141 bzero(&b2, sizeof(b2));
142 bzero(&table, sizeof(table));
143 if (tname != NULL((void *)0)) {
5
←
Assuming 'tname' is equal to NULL
→
6
←
Taking false branch
→
144 if (strlen(tname) >= PF_TABLE_NAME_SIZE32)
145 usage();
146 if (strlcpy(table.pfrt_name, tname,
147 sizeof(table.pfrt_name)) >= sizeof(table.pfrt_name))
148 errx(1, "pfctl_table: strlcpy");
149 }
150 if (strlcpy(table.pfrt_anchor, anchor,
7
←
Assuming the condition is false
→
8
←
Taking false branch
→
151 sizeof(table.pfrt_anchor)) >= sizeof(table.pfrt_anchor))
152 errx(1, "pfctl_table: strlcpy");
153
154 if (!strcmp(command, "-F")) {
9
←
Null pointer passed as 1st argument to string comparison function
155 if (argc || file != NULL((void *)0))
156 usage();
157 RVTEST(pfr_clr_tables(&table, &ndel, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_clr_tables(&table, &ndel, flags))) { if ((opts &
0x04000) == 0) warnx("%s", pf_strerror((*__errno()))); goto _error
; } } while (0);
158 xprintf(opts, "%d tables deleted", ndel);
159 } else if (!strcmp(command, "-s")) {
160 b.pfrb_type = (opts & PF_OPT_VERBOSE20x00080) ?
161 PFRB_TSTATS : PFRB_TABLES;
162 if (argc || file != NULL((void *)0))
163 usage();
164 for (;;) {
165 pfr_buf_grow(&b, b.pfrb_size);
166 b.pfrb_size = b.pfrb_msize;
167 if (opts & PF_OPT_VERBOSE20x00080)
168 RVTEST(pfr_get_tstats(&table,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_tstats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0)
169 b.pfrb_caddr, &b.pfrb_size, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_tstats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0);
170 else
171 RVTEST(pfr_get_tables(&table,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_tables(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0)
172 b.pfrb_caddr, &b.pfrb_size, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_tables(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0);
173 if (b.pfrb_size <= b.pfrb_msize)
174 break;
175 }
176
177 if ((opts & PF_OPT_SHOWALL0x00400) && b.pfrb_size > 0)
178 pfctl_print_title("TABLES:");
179
180 PFRB_FOREACH(p, &b)for ((p) = pfr_buf_next((&b), ((void *)0)); (p) != ((void
*)0); (p) = pfr_buf_next((&b), (p)))
181 if (opts & PF_OPT_VERBOSE20x00080)
182 print_tstats(p, opts & PF_OPT_DEBUG0x00200);
183 else
184 print_table(p, opts & PF_OPT_VERBOSE0x00004,
185 opts & PF_OPT_DEBUG0x00200);
186 } else if (!strcmp(command, "kill")) {
187 if (argc || file != NULL((void *)0))
188 usage();
189 RVTEST(pfr_del_tables(&table, 1, &ndel, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_del_tables(&table, 1, &ndel, flags))) { if ((opts
& 0x04000) == 0) warnx("%s", pf_strerror((*__errno())));
goto _error; } } while (0);
190 xprintf(opts, "%d table deleted", ndel);
191 } else if (!strcmp(command, "flush")) {
192 if (argc || file != NULL((void *)0))
193 usage();
194 RVTEST(pfr_clr_addrs(&table, &ndel, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_clr_addrs(&table, &ndel, flags))) { if ((opts &
0x04000) == 0) warnx("%s", pf_strerror((*__errno()))); goto _error
; } } while (0);
195 xprintf(opts, "%d addresses deleted", ndel);
196 } else if (!strcmp(command, "add")) {
197 b.pfrb_type = PFRB_ADDRS;
198 if (load_addr(&b, argc, argv, file, 0, opts))
199 goto _error;
200 CREATE_TABLEdo { warn_duplicate_tables(table.pfrt_name, table.pfrt_anchor
); table.pfrt_flags |= 0x00000001; if ((!(opts & 0x00008)
|| (opts & 0x00100)) && (pfr_add_tables(&table
, 1, &nadd, flags)) && ((*__errno()) != 1)) { warnx
("%s", pf_strerror((*__errno()))); goto _error; } if (nadd) {
xprintf(opts, "%d table created", nadd); if (opts & 0x00008
) return (0); } table.pfrt_flags &= ~0x00000001; } while(
0);
201 if (opts & PF_OPT_VERBOSE0x00004)
202 flags |= PFR_FLAG_FEEDBACK0x00000004;
203 RVTEST(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size, &nadd
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0)
204 &nadd, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_add_addrs(&table, b.pfrb_caddr, b.pfrb_size, &nadd
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0);
205 xprintf(opts, "%d/%d addresses added", nadd, b.pfrb_size);
206 if (opts & PF_OPT_VERBOSE0x00004)
207 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a)))
208 if (opts & PF_OPT_VERBOSE20x00080 ||
209 a->pfra_fback != PFR_FB_NONE)
210 print_addrx(a, NULL((void *)0),
211 opts & PF_OPT_USEDNS0x00040);
212 } else if (!strcmp(command, "delete")) {
213 b.pfrb_type = PFRB_ADDRS;
214 if (load_addr(&b, argc, argv, file, 0, opts))
215 goto _error;
216 if (opts & PF_OPT_VERBOSE0x00004)
217 flags |= PFR_FLAG_FEEDBACK0x00000004;
218 RVTEST(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size, &ndel
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0)
219 &ndel, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_del_addrs(&table, b.pfrb_caddr, b.pfrb_size, &ndel
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0);
220 xprintf(opts, "%d/%d addresses deleted", ndel, b.pfrb_size);
221 if (opts & PF_OPT_VERBOSE0x00004)
222 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a)))
223 if (opts & PF_OPT_VERBOSE20x00080 ||
224 a->pfra_fback != PFR_FB_NONE)
225 print_addrx(a, NULL((void *)0),
226 opts & PF_OPT_USEDNS0x00040);
227 } else if (!strcmp(command, "replace")) {
228 b.pfrb_type = PFRB_ADDRS;
229 if (load_addr(&b, argc, argv, file, 0, opts))
230 goto _error;
231 CREATE_TABLEdo { warn_duplicate_tables(table.pfrt_name, table.pfrt_anchor
); table.pfrt_flags |= 0x00000001; if ((!(opts & 0x00008)
|| (opts & 0x00100)) && (pfr_add_tables(&table
, 1, &nadd, flags)) && ((*__errno()) != 1)) { warnx
("%s", pf_strerror((*__errno()))); goto _error; } if (nadd) {
xprintf(opts, "%d table created", nadd); if (opts & 0x00008
) return (0); } table.pfrt_flags &= ~0x00000001; } while(
0);
232 if (opts & PF_OPT_VERBOSE0x00004)
233 flags |= PFR_FLAG_FEEDBACK0x00000004;
234 for (;;) {
235 int sz2 = b.pfrb_msize;
236
237 RVTEST(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size, &sz2
, &nadd, &ndel, &nchange, flags))) { if ((opts &
0x04000) == 0) warnx("%s", pf_strerror((*__errno()))); goto _error
; } } while (0)
238 &sz2, &nadd, &ndel, &nchange, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_set_addrs(&table, b.pfrb_caddr, b.pfrb_size, &sz2
, &nadd, &ndel, &nchange, flags))) { if ((opts &
0x04000) == 0) warnx("%s", pf_strerror((*__errno()))); goto _error
; } } while (0);
239 if (sz2 <= b.pfrb_msize) {
240 b.pfrb_size = sz2;
241 break;
242 } else
243 pfr_buf_grow(&b, sz2);
244 }
245 if (nadd)
246 xprintf(opts, "%d addresses added", nadd);
247 if (ndel)
248 xprintf(opts, "%d addresses deleted", ndel);
249 if (nchange)
250 xprintf(opts, "%d addresses changed", nchange);
251 if (!nadd && !ndel && !nchange)
252 xprintf(opts, "no changes");
253 if (opts & PF_OPT_VERBOSE0x00004)
254 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a)))
255 if (opts & PF_OPT_VERBOSE20x00080 ||
256 a->pfra_fback != PFR_FB_NONE)
257 print_addrx(a, NULL((void *)0),
258 opts & PF_OPT_USEDNS0x00040);
259 } else if (!strcmp(command, "expire")) {
260 const char *errstr;
261 u_int lifetime;
262
263 b.pfrb_type = PFRB_ASTATS;
264 b2.pfrb_type = PFRB_ADDRS;
265 if (argc != 1 || file != NULL((void *)0))
266 usage();
267 lifetime = strtonum(*argv, 0, UINT_MAX(2147483647 *2U +1U), &errstr);
268 if (errstr)
269 errx(1, "expiry time: %s", errstr);
270 for (;;) {
271 pfr_buf_grow(&b, b.pfrb_size);
272 b.pfrb_size = b.pfrb_msize;
273 RVTEST(pfr_get_astats(&table, b.pfrb_caddr,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_astats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0)
274 &b.pfrb_size, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_astats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0);
275 if (b.pfrb_size <= b.pfrb_msize)
276 break;
277 }
278 PFRB_FOREACH(p, &b)for ((p) = pfr_buf_next((&b), ((void *)0)); (p) != ((void
*)0); (p) = pfr_buf_next((&b), (p))) {
279 ((struct pfr_astats *)p)->pfras_a.pfra_fback = PFR_FB_NONE;
280 if (time(NULL((void *)0)) - ((struct pfr_astats *)p)->pfras_tzero >
281 lifetime)
282 if (pfr_buf_add(&b2,
283 &((struct pfr_astats *)p)->pfras_a))
284 err(1, "duplicate buffer");
285 }
286
287 if (opts & PF_OPT_VERBOSE0x00004)
288 flags |= PFR_FLAG_FEEDBACK0x00000004;
289 RVTEST(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size, &
ndel, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0)
290 &ndel, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_del_addrs(&table, b2.pfrb_caddr, b2.pfrb_size, &
ndel, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0);
291 xprintf(opts, "%d/%d addresses expired", ndel, b2.pfrb_size);
292 if (opts & PF_OPT_VERBOSE0x00004)
293 PFRB_FOREACH(a, &b2)for ((a) = pfr_buf_next((&b2), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b2), (a)))
294 if (opts & PF_OPT_VERBOSE20x00080 ||
295 a->pfra_fback != PFR_FB_NONE)
296 print_addrx(a, NULL((void *)0),
297 opts & PF_OPT_USEDNS0x00040);
298 } else if (!strcmp(command, "show")) {
299 b.pfrb_type = (opts & PF_OPT_VERBOSE0x00004) ?
300 PFRB_ASTATS : PFRB_ADDRS;
301 if (argc || file != NULL((void *)0))
302 usage();
303 for (;;) {
304 pfr_buf_grow(&b, b.pfrb_size);
305 b.pfrb_size = b.pfrb_msize;
306 if (opts & PF_OPT_VERBOSE0x00004)
307 RVTEST(pfr_get_astats(&table, b.pfrb_caddr,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_astats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0)
308 &b.pfrb_size, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_astats(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0);
309 else
310 RVTEST(pfr_get_addrs(&table, b.pfrb_caddr,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_addrs(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0)
311 &b.pfrb_size, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_get_addrs(&table, b.pfrb_caddr, &b.pfrb_size, flags
))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror(
(*__errno()))); goto _error; } } while (0);
312 if (b.pfrb_size <= b.pfrb_msize)
313 break;
314 }
315 PFRB_FOREACH(p, &b)for ((p) = pfr_buf_next((&b), ((void *)0)); (p) != ((void
*)0); (p) = pfr_buf_next((&b), (p)))
316 if (opts & PF_OPT_VERBOSE0x00004)
317 print_astats(p, opts & PF_OPT_USEDNS0x00040);
318 else
319 print_addrx(p, NULL((void *)0), opts & PF_OPT_USEDNS0x00040);
320 } else if (!strcmp(command, "test")) {
321 b.pfrb_type = PFRB_ADDRS;
322 b2.pfrb_type = PFRB_ADDRS;
323
324 if (load_addr(&b, argc, argv, file, 1, opts))
325 goto _error;
326 if (opts & PF_OPT_VERBOSE20x00080) {
327 flags |= PFR_FLAG_REPLACE0x00000020;
328 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a)))
329 if (pfr_buf_add(&b2, a))
330 err(1, "duplicate buffer");
331 }
332 RVTEST(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size,do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size, &nmatch
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0)
333 &nmatch, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_tst_addrs(&table, b.pfrb_caddr, b.pfrb_size, &nmatch
, flags))) { if ((opts & 0x04000) == 0) warnx("%s", pf_strerror
((*__errno()))); goto _error; } } while (0);
334 xprintf(opts, "%d/%d addresses match", nmatch, b.pfrb_size);
335 if ((opts & PF_OPT_VERBOSE0x00004) && !(opts & PF_OPT_VERBOSE20x00080))
336 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a)))
337 if (a->pfra_fback == PFR_FB_MATCH)
338 print_addrx(a, NULL((void *)0),
339 opts & PF_OPT_USEDNS0x00040);
340 if (opts & PF_OPT_VERBOSE20x00080) {
341 a2 = NULL((void *)0);
342 PFRB_FOREACH(a, &b)for ((a) = pfr_buf_next((&b), ((void *)0)); (a) != ((void
*)0); (a) = pfr_buf_next((&b), (a))) {
343 a2 = pfr_buf_next(&b2, a2);
344 print_addrx(a2, a, opts & PF_OPT_USEDNS0x00040);
345 }
346 }
347 if (nmatch < b.pfrb_size)
348 rv = 2;
349 } else if (!strcmp(command, "zero")) {
350 if (argc || file != NULL((void *)0))
351 usage();
352 flags |= PFR_FLAG_ADDRSTOO0x00000010;
353 RVTEST(pfr_clr_tstats(&table, 1, &nzero, flags))do { if ((!(opts & 0x00008) || (opts & 0x00100)) &&
(pfr_clr_tstats(&table, 1, &nzero, flags))) { if ((opts
& 0x04000) == 0) warnx("%s", pf_strerror((*__errno())));
goto _error; } } while (0);
354 xprintf(opts, "%d table/stats cleared", nzero);
355 } else
356 warnx("pfctl_table: unknown command '%s'", command);
357 goto _cleanup;
358
359_error:
360 rv = -1;
361_cleanup:
362 pfr_buf_clear(&b);
363 pfr_buf_clear(&b2);
364 return (rv);
365}
366
367void
368print_table(struct pfr_table *ta, int verbose, int debug)
369{
370 if (!debug && !(ta->pfrt_flags & PFR_TFLAG_ACTIVE0x00000004))
371 return;
372 if (verbose) {
373 printf("%c%c%c%c%c%c%c\t%s",
374 (ta->pfrt_flags & PFR_TFLAG_CONST0x00000002) ? 'c' : '-',
375 (ta->pfrt_flags & PFR_TFLAG_PERSIST0x00000001) ? 'p' : '-',
376 (ta->pfrt_flags & PFR_TFLAG_ACTIVE0x00000004) ? 'a' : '-',
377 (ta->pfrt_flags & PFR_TFLAG_INACTIVE0x00000008) ? 'i' : '-',
378 (ta->pfrt_flags & PFR_TFLAG_REFERENCED0x00000010) ? 'r' : '-',
379 (ta->pfrt_flags & PFR_TFLAG_REFDANCHOR0x00000020) ? 'h' : '-',
380 (ta->pfrt_flags & PFR_TFLAG_COUNTERS0x00000040) ? 'C' : '-',
381 ta->pfrt_name);
382 if (ta->pfrt_anchor[0])
383 printf("\t%s", ta->pfrt_anchor);
384 puts("");
385 } else
386 puts(ta->pfrt_name);
387}
388
389void
390print_tstats(struct pfr_tstats *ts, int debug)
391{
392 time_t time = ts->pfrts_tzero;
393 int dir, op;
394
395 if (!debug && !(ts->pfrts_flagspfrts_t.pfrt_flags & PFR_TFLAG_ACTIVE0x00000004))
396 return;
397 print_table(&ts->pfrts_t, 1, debug);
398 printf("\tAddresses: %d\n", ts->pfrts_cnt);
399 printf("\tCleared: %s", ctime(&time));
400 printf("\tReferences: [ Anchors: %-18d Rules: %-18d ]\n",
401 ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
402 ts->pfrts_refcnt[PFR_REFCNT_RULE]);
403 printf("\tEvaluations: [ NoMatch: %-18llu Match: %-18llu ]\n",
404 (unsigned long long)ts->pfrts_nomatch,
405 (unsigned long long)ts->pfrts_match);
406 for (dir = 0; dir < PFR_DIR_MAX; dir++)
407 for (op = 0; op < PFR_OP_TABLE_MAX; op++)
408 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
409 stats_text[dir][op],
410 (unsigned long long)ts->pfrts_packets[dir][op],
411 (unsigned long long)ts->pfrts_bytes[dir][op]);
412}
413
414int
415load_addr(struct pfr_buffer *b, int argc, char *argv[], char *file,
416 int nonetwork, int opts)
417{
418 int ev = 0;
419 while (argc--)
420 if ((ev = append_addr(b, *argv++, nonetwork, opts)) == -1) {
421 if (errno(*__errno()))
422 warn("cannot decode %s", argv[-1]);
423 return (-1);
424 }
425 if (ev == 1) { /* expected further append_addr call */
426 warnx("failed to decode %s", argv[-1]);
427 return (-1);
428 }
429 if (pfr_buf_load(b, file, nonetwork, opts)) {
430 warn("cannot load %s", file);
431 return (-1);
432 }
433 return (0);
434}
435
436void
437print_addrx(struct pfr_addr *ad, struct pfr_addr *rad, int dns)
438{
439 char ch, buf[256] = "{error}";
440 char fb[] = { ' ', 'M', 'A', 'D', 'C', 'Z', 'X', ' ', 'Y', ' ' };
441 unsigned int fback, hostnet;
442
443 fback = (rad != NULL((void *)0)) ? rad->pfra_fback : ad->pfra_fback;
444 ch = (fback < sizeof(fb)/sizeof(*fb)) ? fb[fback] : '?';
445 hostnet = (ad->pfra_af == AF_INET624) ? 128 : 32;
446 inet_ntop(ad->pfra_af, &ad->pfra_u, buf, sizeof(buf));
447 printf("%c %c%s", ch, (ad->pfra_not?'!':' '), buf);
448 if (ad->pfra_net < hostnet)
449 printf("/%d", ad->pfra_net);
450 if (rad != NULL((void *)0) && fback != PFR_FB_NONE) {
451 if (strlcpy(buf, "{error}", sizeof(buf)) >= sizeof(buf))
452 errx(1, "print_addrx: strlcpy");
453 inet_ntop(rad->pfra_af, &rad->pfra_u, buf, sizeof(buf));
454 printf("\t%c%s", (rad->pfra_not?'!':' '), buf);
455 if (rad->pfra_net < hostnet)
456 printf("/%d", rad->pfra_net);
457 }
458 if (rad != NULL((void *)0) && fback == PFR_FB_NONE)
459 printf("\t nomatch");
460 if (dns && ad->pfra_net == hostnet) {
461 char host[NI_MAXHOST256];
462 struct sockaddr_storage ss;
463
464 strlcpy(host, "?", sizeof(host));
465 bzero(&ss, sizeof(ss));
466 ss.ss_family = ad->pfra_af;
467 if (ss.ss_family == AF_INET2) {
468 struct sockaddr_in *sin = (struct sockaddr_in *)&ss;
469
470 sin->sin_len = sizeof(*sin);
471 sin->sin_addr = ad->pfra_ip4addrpfra_u._pfra_ip4addr;
472 } else {
473 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ss;
474
475 sin6->sin6_len = sizeof(*sin6);
476 sin6->sin6_addr = ad->pfra_ip6addrpfra_u._pfra_ip6addr;
477 }
478 if (getnameinfo((struct sockaddr *)&ss, ss.ss_len, host,
479 sizeof(host), NULL((void *)0), 0, NI_NAMEREQD8) == 0)
480 printf("\t(%s)", host);
481 }
482 if (ad->pfra_ifname[0] != '\0')
483 printf("@%s", ad->pfra_ifname);
484 printf("\n");
485}
486
487void
488print_astats(struct pfr_astats *as, int dns)
489{
490 time_t time = as->pfras_tzero;
491 int dir, op;
492
493 print_addrx(&as->pfras_a, NULL((void *)0), dns);
494 printf("\tCleared: %s", ctime(&time));
495 if (as->pfras_a.pfra_states)
496 printf("\tActive States: %d\n", as->pfras_a.pfra_states);
497 if (as->pfras_a.pfra_type == PFRKE_COST)
498 printf("\tWeight: %d\n", as->pfras_a.pfra_weight);
499 if (as->pfras_a.pfra_ifname[0])
500 printf("\tInterface: %s\n", as->pfras_a.pfra_ifname);
501 if (as->pfras_a.pfra_fback == PFR_FB_NOCOUNT)
502 return;
503 for (dir = 0; dir < PFR_DIR_MAX; dir++)
504 for (op = 0; op < PFR_OP_ADDR_MAX; op++)
505 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
506 stats_text[dir][op],
507 (unsigned long long)as->pfras_packets[dir][op],
508 (unsigned long long)as->pfras_bytes[dir][op]);
509}
510
511int
512pfctl_define_table(char *name, int flags, int addrs, const char *anchor,
513 struct pfr_buffer *ab, u_int32_t ticket)
514{
515 struct pfr_table tbl;
516
517 bzero(&tbl, sizeof(tbl));
518 if (strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)) >=
519 sizeof(tbl.pfrt_name) || strlcpy(tbl.pfrt_anchor, anchor,
520 sizeof(tbl.pfrt_anchor)) >= sizeof(tbl.pfrt_anchor))
521 errx(1, "pfctl_define_table: strlcpy");
522 tbl.pfrt_flags = flags;
523
524 return pfr_ina_define(&tbl, ab->pfrb_caddr, ab->pfrb_size, NULL((void *)0),
525 NULL((void *)0), ticket, addrs ? PFR_FLAG_ADDRSTOO0x00000010 : 0);
526}
527
528void
529warn_duplicate_tables(const char *tablename, const char *anchorname)
530{
531 struct pfr_buffer b;
532 struct pfr_table *t;
533
534 bzero(&b, sizeof(b));
535 b.pfrb_type = PFRB_TABLES;
536 for (;;) {
537 pfr_buf_grow(&b, b.pfrb_size);
538 b.pfrb_size = b.pfrb_msize;
539 if (pfr_get_tables(NULL((void *)0), b.pfrb_caddr,
540 &b.pfrb_size, PFR_FLAG_ALLRSETS0x00000040))
541 err(1, "pfr_get_tables");
542 if (b.pfrb_size <= b.pfrb_msize)
543 break;
544 }
545 PFRB_FOREACH(t, &b)for ((t) = pfr_buf_next((&b), ((void *)0)); (t) != ((void
*)0); (t) = pfr_buf_next((&b), (t))) {
546 if (!(t->pfrt_flags & PFR_TFLAG_ACTIVE0x00000004))
547 continue;
548 if (!strcmp(anchorname, t->pfrt_anchor))
549 continue;
550 if (!strcmp(tablename, t->pfrt_name))
551 warnx("warning: table <%s> already defined"
552 " in anchor \"%s\"", tablename,
553 t->pfrt_anchor[0] ? t->pfrt_anchor : "/");
554 }
555 pfr_buf_clear(&b);
556}
557
558void
559xprintf(int opts, const char *fmt, ...)
560{
561 va_list args;
562
563 if (opts & PF_OPT_QUIET0x00010)
564 return;
565
566 va_start(args, fmt)__builtin_va_start(args, fmt);
567 vfprintf(stderr(&__sF[2]), fmt, args);
568 va_end(args)__builtin_va_end(args);
569
570 if (opts & PF_OPT_DUMMYACTION0x00100)
571 fprintf(stderr(&__sF[2]), " (dummy).\n");
572 else if (opts & PF_OPT_NOACTION0x00008)
573 fprintf(stderr(&__sF[2]), " (syntax only).\n");
574 else
575 fprintf(stderr(&__sF[2]), ".\n");
576}
577
578
579/* interface stuff */
580
581void
582pfctl_show_ifaces(const char *filter, int opts)
583{
584 struct pfr_buffer b;
585 struct pfi_kif *p;
586 int i = 0;
587
588 bzero(&b, sizeof(b));
589 b.pfrb_type = PFRB_IFACES;
590 for (;;) {
591 pfr_buf_grow(&b, b.pfrb_size);
592 b.pfrb_size = b.pfrb_msize;
593 if (pfi_get_ifaces(filter, b.pfrb_caddr, &b.pfrb_size))
594 errx(1, "%s", pf_strerror(errno(*__errno())));
595 if (b.pfrb_size <= b.pfrb_msize)
596 break;
597 i++;
598 }
599 if (opts & PF_OPT_SHOWALL0x00400)
600 pfctl_print_title("INTERFACES:");
601 PFRB_FOREACH(p, &b)for ((p) = pfr_buf_next((&b), ((void *)0)); (p) != ((void
*)0); (p) = pfr_buf_next((&b), (p)))
602 print_iface(p, opts);
603}
604
605void
606print_iface(struct pfi_kif *p, int opts)
607{
608 time_t tzero = p->pfik_tzero;
609 int i, af, dir, act;
610
611 printf("%s", p->pfik_name);
612 if (opts & PF_OPT_VERBOSE0x00004) {
613 if (p->pfik_flags & PFI_IFLAG_SKIP0x0100)
614 printf(" (skip)");
615 }
616 printf("\n");
617
618 if (!(opts & PF_OPT_VERBOSE20x00080))
619 return;
620 printf("\tCleared: %s", ctime(&tzero));
621 printf("\tReferences: [ States: %-18d Rules: %-18d ]\n",
622 p->pfik_states, p->pfik_rules);
623 for (i = 0; i < 8; i++) {
624 af = (i>>2) & 1;
625 dir = (i>>1) &1;
626 act = i & 1;
627 printf("\t%-12s [ Packets: %-18llu Bytes: %-18llu ]\n",
628 istats_text[af][dir][act],
629 (unsigned long long)p->pfik_packets[af][dir][act],
630 (unsigned long long)p->pfik_bytes[af][dir][act]);
631 }
632}