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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / cmd / ipf / tools / ipmon.c
blob398730f08e68e866ed07ab10e1af179e6ac06344
1 /*
2 * Copyright (C) 2001-2008 by Darren Reed.
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 *
6 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
7 * Use is subject to license terms.
8 *
9 * Copyright (c) 2014, Joyent, Inc. All rights reserved.
10 */
11
12
13 #ifndef SOLARIS
14 #define SOLARIS (defined(__SVR4) || defined(__svr4__)) && defined(sun)
15 #endif
16
17 #include <sys/types.h>
18 #include <sys/stat.h>
19 #include <sys/param.h>
20 #include <sys/file.h>
21 #include <sys/time.h>
22 #define _KERNEL
23 #include <sys/uio.h>
24 #undef _KERNEL
25 #include <sys/socket.h>
26 #include <sys/ioctl.h>
27
28 #include <stdio.h>
29 #include <unistd.h>
30 #include <string.h>
31 #include <fcntl.h>
32 #include <errno.h>
33 #include <time.h>
34 #if !defined(__SVR4) && !defined(__svr4__)
35 # if (__FreeBSD_version >= 300000)
36 # include <sys/dirent.h>
37 # else
38 # include <sys/dir.h>
39 # endif
40 #else
41 # include <sys/filio.h>
42 # include <sys/byteorder.h>
43 #endif
44 #if !defined(__hpux) && (!defined(__SVR4) && !defined(__GNUC__))
45 # include <strings.h>
46 #endif
47 #include <signal.h>
48 #include <stdlib.h>
49 #include <stddef.h>
50 #include <netinet/in.h>
51 #include <netinet/in_systm.h>
52 #include <net/if.h>
53 #include <netinet/ip.h>
54 #if !defined(__hpux) && !defined(linux)
55 # include <netinet/tcp_fsm.h>
56 #endif
57 #include <netdb.h>
58 #include <arpa/inet.h>
59 #include <arpa/nameser.h>
60 #ifdef __hpux
61 # undef NOERROR
62 #endif
63 #include <resolv.h>
64
65 #if !defined(linux)
66 # include <sys/protosw.h>
67 # include <netinet/ip_var.h>
68 #endif
69
70 #include <netinet/tcp.h>
71 #include <netinet/ip_icmp.h>
72
73 #include <ctype.h>
74 #include <syslog.h>
75
76 #include "netinet/ip_compat.h"
77 #include <netinet/tcpip.h>
78 #include "netinet/ip_fil.h"
79 #include "netinet/ip_nat.h"
80 #include "netinet/ip_state.h"
81 #include "netinet/ip_proxy.h"
82 #include "ipmon.h"
83 #include "ipfzone.h"
84
85 #if !defined(lint)
86 static const char sccsid[] = "@(#)ipmon.c 1.21 6/5/96 (C)1993-2000 Darren Reed";
87 static const char rcsid[] = "@(#)$Id: ipmon.c,v 1.33.2.10 2005/06/18 02:41:35 darrenr Exp $";
88 #endif
89
90
91 #if defined(sun) && !defined(SOLARIS2)
92 #define STRERROR(x) sys_errlist[x]
93 extern char *sys_errlist[];
94 #else
95 #define STRERROR(x) strerror(x)
96 #endif
97
98
99 struct flags {
100 int value;
101 char flag;
102 };
103
104
105 typedef struct icmp_subtype {
106 int ist_val;
107 char *ist_name;
108 } icmp_subtype_t;
109
110 typedef struct icmp_type {
111 int it_val;
112 struct icmp_subtype *it_subtable;
113 size_t it_stsize;
114 char *it_name;
115 } icmp_type_t;
116
117
118 #define IST_SZ(x) (sizeof(x)/sizeof(icmp_subtype_t))
119
120
121 struct flags tcpfl[] = {
122 { TH_ACK, 'A' },
123 { TH_RST, 'R' },
124 { TH_SYN, 'S' },
125 { TH_FIN, 'F' },
126 { TH_URG, 'U' },
127 { TH_PUSH,'P' },
128 { TH_ECN, 'E' },
129 { TH_CWR, 'C' },
130 { 0, '\0' }
131 };
132
133 #if defined(__hpux) || (defined(SOLARIS) && (SOLARIS2 < 10))
134 static char *pidfile = "/etc/ipf/ipmon.pid";
135 #else
136 # if (BSD >= 199306) || defined(SOLARIS)
137 static char *pidfile = "/var/run/ipmon.pid";
138 # else
139 static char *pidfile = "/etc/ipmon.pid";
140 # endif
141 #endif
142
143 static char line[2048];
144 static int opts = 0;
145 static char *logfile = NULL;
146 static FILE *binarylog = NULL;
147 static char *binarylogfile = NULL;
148 static int donehup = 0;
149 static void usage __P((char *));
150 static void handlehup __P((int));
151 static void flushlogs __P((char *, FILE *));
152 static void print_log __P((int, FILE *, char *, int));
153 static void print_ipflog __P((FILE *, char *, int));
154 static void print_natlog __P((FILE *, char *, int));
155 static void print_statelog __P((FILE *, char *, int));
156 static int read_log __P((int, int *, char *, int));
157 static void write_pid __P((char *));
158 static char *icmpname __P((u_int, u_int));
159 static char *icmpname6 __P((u_int, u_int));
160 static icmp_type_t *find_icmptype __P((int, icmp_type_t *, size_t));
161 static icmp_subtype_t *find_icmpsubtype __P((int, icmp_subtype_t *, size_t));
162 #ifdef __hpux
163 static struct tm *get_tm __P((u_32_t));
164 #else
165 static struct tm *get_tm __P((time_t));
166 #endif
167
168 char *hostname __P((int, int, u_32_t *));
169 char *portname __P((int, char *, u_int));
170 int main __P((int, char *[]));
171
172 static void logopts __P((int, char *));
173 static void init_tabs __P((void));
174 static char *getproto __P((u_int));
175
176 static char **protocols = NULL;
177 static char **udp_ports = NULL;
178 static char **tcp_ports = NULL;
179 static char *conf_file = NULL;
180
181
182 #define OPT_SYSLOG 0x001
183 #define OPT_RESOLVE 0x002
184 #define OPT_HEXBODY 0x004
185 #define OPT_VERBOSE 0x008
186 #define OPT_HEXHDR 0x010
187 #define OPT_TAIL 0x020
188 #define OPT_NAT 0x080
189 #define OPT_STATE 0x100
190 #define OPT_FILTER 0x200
191 #define OPT_PORTNUM 0x400
192 #define OPT_LOGALL (OPT_NAT|OPT_STATE|OPT_FILTER)
193 #define OPT_LOGBODY 0x800
194
195 #define HOSTNAME_V4(a,b) hostname((a), 4, (u_32_t *)&(b))
196
197 #ifndef LOGFAC
198 #define LOGFAC LOG_LOCAL0
199 #endif
200
201
202 static icmp_subtype_t icmpunreachnames[] = {
203 { ICMP_UNREACH_NET, "net" },
204 { ICMP_UNREACH_HOST, "host" },
205 { ICMP_UNREACH_PROTOCOL, "protocol" },
206 { ICMP_UNREACH_PORT, "port" },
207 { ICMP_UNREACH_NEEDFRAG, "needfrag" },
208 { ICMP_UNREACH_SRCFAIL, "srcfail" },
209 { ICMP_UNREACH_NET_UNKNOWN, "net_unknown" },
210 { ICMP_UNREACH_HOST_UNKNOWN, "host_unknown" },
211 { ICMP_UNREACH_NET, "isolated" },
212 { ICMP_UNREACH_NET_PROHIB, "net_prohib" },
213 { ICMP_UNREACH_NET_PROHIB, "host_prohib" },
214 { ICMP_UNREACH_TOSNET, "tosnet" },
215 { ICMP_UNREACH_TOSHOST, "toshost" },
216 { ICMP_UNREACH_ADMIN_PROHIBIT, "admin_prohibit" },
217 { -2, NULL }
218 };
219
220 static icmp_subtype_t redirectnames[] = {
221 { ICMP_REDIRECT_NET, "net" },
222 { ICMP_REDIRECT_HOST, "host" },
223 { ICMP_REDIRECT_TOSNET, "tosnet" },
224 { ICMP_REDIRECT_TOSHOST, "toshost" },
225 { -2, NULL }
226 };
227
228 static icmp_subtype_t timxceednames[] = {
229 { ICMP_TIMXCEED_INTRANS, "transit" },
230 { ICMP_TIMXCEED_REASS, "reassem" },
231 { -2, NULL }
232 };
233
234 static icmp_subtype_t paramnames[] = {
235 { ICMP_PARAMPROB_ERRATPTR, "errata_pointer" },
236 { ICMP_PARAMPROB_OPTABSENT, "optmissing" },
237 { ICMP_PARAMPROB_LENGTH, "length" },
238 { -2, NULL }
239 };
240
241 static icmp_type_t icmptypes[] = {
242 { ICMP_ECHOREPLY, NULL, 0, "echoreply" },
243 { -1, NULL, 0, NULL },
244 { -1, NULL, 0, NULL },
245 { ICMP_UNREACH, icmpunreachnames,
246 IST_SZ(icmpunreachnames),"unreach" },
247 { ICMP_SOURCEQUENCH, NULL, 0, "sourcequench" },
248 { ICMP_REDIRECT, redirectnames,
249 IST_SZ(redirectnames), "redirect" },
250 { -1, NULL, 0, NULL },
251 { -1, NULL, 0, NULL },
252 { ICMP_ECHO, NULL, 0, "echo" },
253 { ICMP_ROUTERADVERT, NULL, 0, "routeradvert" },
254 { ICMP_ROUTERSOLICIT, NULL, 0, "routersolicit" },
255 { ICMP_TIMXCEED, timxceednames,
256 IST_SZ(timxceednames), "timxceed" },
257 { ICMP_PARAMPROB, paramnames,
258 IST_SZ(paramnames), "paramprob" },
259 { ICMP_TSTAMP, NULL, 0, "timestamp" },
260 { ICMP_TSTAMPREPLY, NULL, 0, "timestampreply" },
261 { ICMP_IREQ, NULL, 0, "inforeq" },
262 { ICMP_IREQREPLY, NULL, 0, "inforeply" },
263 { ICMP_MASKREQ, NULL, 0, "maskreq" },
264 { ICMP_MASKREPLY, NULL, 0, "maskreply" },
265 { -2, NULL, 0, NULL }
266 };
267
268 static icmp_subtype_t icmpredirect6[] = {
269 { ICMP6_DST_UNREACH_NOROUTE, "noroute" },
270 { ICMP6_DST_UNREACH_ADMIN, "admin" },
271 { ICMP6_DST_UNREACH_NOTNEIGHBOR, "neighbour" },
272 { ICMP6_DST_UNREACH_ADDR, "address" },
273 { ICMP6_DST_UNREACH_NOPORT, "noport" },
274 { -2, NULL }
275 };
276
277 static icmp_subtype_t icmptimexceed6[] = {
278 { ICMP6_TIME_EXCEED_TRANSIT, "intransit" },
279 { ICMP6_TIME_EXCEED_REASSEMBLY, "reassem" },
280 { -2, NULL }
281 };
282
283 static icmp_subtype_t icmpparamprob6[] = {
284 { ICMP6_PARAMPROB_HEADER, "header" },
285 { ICMP6_PARAMPROB_NEXTHEADER, "nextheader" },
286 { ICMP6_PARAMPROB_OPTION, "option" },
287 { -2, NULL }
288 };
289
290 static icmp_subtype_t icmpquerysubject6[] = {
291 { ICMP6_NI_SUBJ_IPV6, "ipv6" },
292 { ICMP6_NI_SUBJ_FQDN, "fqdn" },
293 { ICMP6_NI_SUBJ_IPV4, "ipv4" },
294 { -2, NULL },
295 };
296
297 static icmp_subtype_t icmpnodeinfo6[] = {
298 { ICMP6_NI_SUCCESS, "success" },
299 { ICMP6_NI_REFUSED, "refused" },
300 { ICMP6_NI_UNKNOWN, "unknown" },
301 { -2, NULL }
302 };
303
304 static icmp_subtype_t icmprenumber6[] = {
305 { ICMP6_ROUTER_RENUMBERING_COMMAND, "command" },
306 { ICMP6_ROUTER_RENUMBERING_RESULT, "result" },
307 { ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET, "seqnum_reset" },
308 { -2, NULL }
309 };
310
311 static icmp_type_t icmptypes6[] = {
312 { 0, NULL, 0, NULL },
313 { ICMP6_DST_UNREACH, icmpredirect6,
314 IST_SZ(icmpredirect6), "unreach" },
315 { ICMP6_PACKET_TOO_BIG, NULL, 0, "toobig" },
316 { ICMP6_TIME_EXCEEDED, icmptimexceed6,
317 IST_SZ(icmptimexceed6), "timxceed" },
318 { ICMP6_PARAM_PROB, icmpparamprob6,
319 IST_SZ(icmpparamprob6), "paramprob" },
320 { ICMP6_ECHO_REQUEST, NULL, 0, "echo" },
321 { ICMP6_ECHO_REPLY, NULL, 0, "echoreply" },
322 { ICMP6_MEMBERSHIP_QUERY, icmpquerysubject6,
323 IST_SZ(icmpquerysubject6), "groupmemberquery" },
324 { ICMP6_MEMBERSHIP_REPORT,NULL, 0, "groupmemberreport" },
325 { ICMP6_MEMBERSHIP_REDUCTION,NULL, 0, "groupmemberterm" },
326 { ND_ROUTER_SOLICIT, NULL, 0, "routersolicit" },
327 { ND_ROUTER_ADVERT, NULL, 0, "routeradvert" },
328 { ND_NEIGHBOR_SOLICIT, NULL, 0, "neighborsolicit" },
329 { ND_NEIGHBOR_ADVERT, NULL, 0, "neighboradvert" },
330 { ND_REDIRECT, NULL, 0, "redirect" },
331 { ICMP6_ROUTER_RENUMBERING, icmprenumber6,
332 IST_SZ(icmprenumber6), "routerrenumber" },
333 { ICMP6_WRUREQUEST, NULL, 0, "whoareyourequest" },
334 { ICMP6_WRUREPLY, NULL, 0, "whoareyoureply" },
335 { ICMP6_FQDN_QUERY, NULL, 0, "fqdnquery" },
336 { ICMP6_FQDN_REPLY, NULL, 0, "fqdnreply" },
337 { ICMP6_NI_QUERY, icmpnodeinfo6,
338 IST_SZ(icmpnodeinfo6), "nodeinforequest" },
339 { ICMP6_NI_REPLY, NULL, 0, "nodeinforeply" },
340 { MLD6_MTRACE_RESP, NULL, 0, "mtraceresponse" },
341 { MLD6_MTRACE, NULL, 0, "mtracerequest" },
342 { -2, NULL, 0, NULL }
343 };
344
345 static icmp_subtype_t *find_icmpsubtype(type, table, tablesz)
346 int type;
347 icmp_subtype_t *table;
348 size_t tablesz;
349 {
350 icmp_subtype_t *ist;
351 int i;
352
353 if (tablesz < 2)
354 return NULL;
355
356 if ((type < 0) || (type > table[tablesz - 2].ist_val))
357 return NULL;
358
359 i = type;
360 if (table[type].ist_val == type)
361 return table + type;
362
363 for (i = 0, ist = table; ist->ist_val != -2; i++, ist++)
364 if (ist->ist_val == type)
365 return ist;
366 return NULL;
367 }
368
369
370 static icmp_type_t *find_icmptype(type, table, tablesz)
371 int type;
372 icmp_type_t *table;
373 size_t tablesz;
374 {
375 icmp_type_t *it;
376 int i;
377
378 if (tablesz < 2)
379 return NULL;
380
381 if ((type < 0) || (type > table[tablesz - 2].it_val))
382 return NULL;
383
384 i = type;
385 if (table[type].it_val == type)
386 return table + type;
387
388 for (i = 0, it = table; it->it_val != -2; i++, it++)
389 if (it->it_val == type)
390 return it;
391 return NULL;
392 }
393
394
395 static void handlehup(sig)
396 int sig;
397 {
398 signal(SIGHUP, handlehup);
399 donehup = 1;
400 }
401
402
403 static void init_tabs()
404 {
405 struct protoent *p;
406 struct servent *s;
407 char *name, **tab;
408 int port, i;
409
410 if (protocols != NULL) {
411 for (i = 0; i < 256; i++)
412 if (protocols[i] != NULL) {
413 free(protocols[i]);
414 protocols[i] = NULL;
415 }
416 free(protocols);
417 protocols = NULL;
418 }
419 protocols = (char **)malloc(256 * sizeof(*protocols));
420 if (protocols != NULL) {
421 bzero((char *)protocols, 256 * sizeof(*protocols));
422
423 setprotoent(1);
424 while ((p = getprotoent()) != NULL)
425 if (p->p_proto >= 0 && p->p_proto <= 255 &&
426 p->p_name != NULL && protocols[p->p_proto] == NULL)
427 protocols[p->p_proto] = strdup(p->p_name);
428 endprotoent();
429 #if defined(_AIX51)
430 if (protocols[0])
431 free(protocols[0]);
432 if (protocols[252])
433 free(protocols[252]);
434 protocols[0] = "ip";
435 protocols[252] = NULL;
436 #endif
437 }
438
439 if (udp_ports != NULL) {
440 for (i = 0; i < 65536; i++)
441 if (udp_ports[i] != NULL) {
442 free(udp_ports[i]);
443 udp_ports[i] = NULL;
444 }
445 free(udp_ports);
446 udp_ports = NULL;
447 }
448 udp_ports = (char **)malloc(65536 * sizeof(*udp_ports));
449 if (udp_ports != NULL)
450 bzero((char *)udp_ports, 65536 * sizeof(*udp_ports));
451
452 if (tcp_ports != NULL) {
453 for (i = 0; i < 65536; i++)
454 if (tcp_ports[i] != NULL) {
455 free(tcp_ports[i]);
456 tcp_ports[i] = NULL;
457 }
458 free(tcp_ports);
459 tcp_ports = NULL;
460 }
461 tcp_ports = (char **)malloc(65536 * sizeof(*tcp_ports));
462 if (tcp_ports != NULL)
463 bzero((char *)tcp_ports, 65536 * sizeof(*tcp_ports));
464
465 setservent(1);
466 while ((s = getservent()) != NULL) {
467 if (s->s_proto == NULL)
468 continue;
469 else if (!strcmp(s->s_proto, "tcp")) {
470 port = ntohs(s->s_port);
471 name = s->s_name;
472 tab = tcp_ports;
473 } else if (!strcmp(s->s_proto, "udp")) {
474 port = ntohs(s->s_port);
475 name = s->s_name;
476 tab = udp_ports;
477 } else
478 continue;
479 if ((port < 0 || port > 65535) || (name == NULL))
480 continue;
481 if (tab != NULL)
482 tab[port] = strdup(name);
483 }
484 endservent();
485 }
486
487
488 static char *getproto(p)
489 u_int p;
490 {
491 static char pnum[4];
492 char *s;
493
494 p &= 0xff;
495 s = protocols ? protocols[p] : NULL;
496 if (s == NULL) {
497 sprintf(pnum, "%u", p);
498 s = pnum;
499 }
500 return s;
501 }
502
503
504 static int read_log(fd, lenp, buf, bufsize)
505 int fd, bufsize, *lenp;
506 char *buf;
507 {
508 int nr;
509
510 nr = read(fd, buf, bufsize);
511 if (!nr)
512 return 2;
513 if ((nr < 0) && (errno != EINTR))
514 return -1;
515 *lenp = nr;
516 return 0;
517 }
518
519
520 char *hostname(res, v, ip)
521 int res, v;
522 u_32_t *ip;
523 {
524 # define MAX_INETA 16
525 static char hname[MAXHOSTNAMELEN + MAX_INETA + 3];
526 #ifdef USE_INET6
527 static char hostbuf[MAXHOSTNAMELEN+1];
528 #endif
529 struct hostent *hp;
530 struct in_addr ipa;
531
532 if (v == 4) {
533 ipa.s_addr = *ip;
534 if (!res)
535 return inet_ntoa(ipa);
536 hp = gethostbyaddr((char *)ip, sizeof(*ip), AF_INET);
537 if (!hp)
538 return inet_ntoa(ipa);
539 sprintf(hname, "%.*s[%s]", MAXHOSTNAMELEN, hp->h_name,
540 inet_ntoa(ipa));
541 return hname;
542 }
543 #ifdef USE_INET6
544 (void) inet_ntop(AF_INET6, ip, hostbuf, sizeof(hostbuf) - 1);
545 hostbuf[MAXHOSTNAMELEN] = '\0';
546 return hostbuf;
547 #else
548 return "IPv6";
549 #endif
550 }
551
552
553 char *portname(res, proto, port)
554 int res;
555 char *proto;
556 u_int port;
557 {
558 static char pname[8];
559 char *s;
560
561 port = ntohs(port);
562 port &= 0xffff;
563 (void) sprintf(pname, "%u", port);
564 if (!res || (opts & OPT_PORTNUM))
565 return pname;
566 s = NULL;
567 if (!strcmp(proto, "tcp"))
568 s = tcp_ports[port];
569 else if (!strcmp(proto, "udp"))
570 s = udp_ports[port];
571 if (s == NULL)
572 s = pname;
573 return s;
574 }
575
576
577 static char *icmpname(type, code)
578 u_int type;
579 u_int code;
580 {
581 static char name[80];
582 icmp_subtype_t *ist;
583 icmp_type_t *it;
584 char *s;
585
586 s = NULL;
587 it = find_icmptype(type, icmptypes, sizeof(icmptypes) / sizeof(*it));
588 if (it != NULL)
589 s = it->it_name;
590
591 if (s == NULL)
592 sprintf(name, "icmptype(%d)/", type);
593 else
594 sprintf(name, "%s/", s);
595
596 ist = NULL;
597 if (it != NULL && it->it_subtable != NULL)
598 ist = find_icmpsubtype(code, it->it_subtable, it->it_stsize);
599
600 if (ist != NULL && ist->ist_name != NULL)
601 strcat(name, ist->ist_name);
602 else
603 sprintf(name + strlen(name), "%d", code);
604
605 return name;
606 }
607
608 static char *icmpname6(type, code)
609 u_int type;
610 u_int code;
611 {
612 static char name[80];
613 icmp_subtype_t *ist;
614 icmp_type_t *it;
615 char *s;
616
617 s = NULL;
618 it = find_icmptype(type, icmptypes6, sizeof(icmptypes6) / sizeof(*it));
619 if (it != NULL)
620 s = it->it_name;
621
622 if (s == NULL)
623 sprintf(name, "icmpv6type(%d)/", type);
624 else
625 sprintf(name, "%s/", s);
626
627 ist = NULL;
628 if (it != NULL && it->it_subtable != NULL)
629 ist = find_icmpsubtype(code, it->it_subtable, it->it_stsize);
630
631 if (ist != NULL && ist->ist_name != NULL)
632 strcat(name, ist->ist_name);
633 else
634 sprintf(name + strlen(name), "%d", code);
635
636 return name;
637 }
638
639
640 void dumphex(log, dopts, buf, len)
641 FILE *log;
642 int dopts;
643 char *buf;
644 int len;
645 {
646 char hline[80];
647 int i, j, k;
648 u_char *s = (u_char *)buf, *t = (u_char *)hline;
649
650 if (buf == NULL || len == 0)
651 return;
652
653 *hline = '\0';
654
655 for (i = len, j = 0; i; i--, j++, s++) {
656 if (j && !(j & 0xf)) {
657 *t++ = '\n';
658 *t = '\0';
659 if (!(dopts & OPT_SYSLOG))
660 fputs(hline, log);
661 else
662 syslog(LOG_INFO, "%s", hline);
663 t = (u_char *)hline;
664 *t = '\0';
665 }
666 sprintf((char *)t, "%02x", *s & 0xff);
667 t += 2;
668 if (!((j + 1) & 0xf)) {
669 s -= 15;
670 sprintf((char *)t, " ");
671 t += 8;
672 for (k = 16; k; k--, s++)
673 *t++ = (ISPRINT(*s) ? *s : '.');
674 s--;
675 }
676
677 if ((j + 1) & 0xf)
678 *t++ = ' ';;
679 }
680
681 if (j & 0xf) {
682 for (k = 16 - (j & 0xf); k; k--) {
683 *t++ = ' ';
684 *t++ = ' ';
685 *t++ = ' ';
686 }
687 sprintf((char *)t, " ");
688 t += 7;
689 s -= j & 0xf;
690 for (k = j & 0xf; k; k--, s++)
691 *t++ = (ISPRINT(*s) ? *s : '.');
692 *t++ = '\n';
693 *t = '\0';
694 }
695 if (!(dopts & OPT_SYSLOG)) {
696 fputs(hline, log);
697 fflush(log);
698 } else
699 syslog(LOG_INFO, "%s", hline);
700 }
701
702
703 static struct tm *get_tm(sec)
704 #ifdef __hpux
705 u_32_t sec;
706 #else
707 time_t sec;
708 #endif
709 {
710 struct tm *tm;
711 time_t t;
712
713 t = sec;
714 tm = localtime(&t);
715 return tm;
716 }
717
718 static void print_natlog(log, buf, blen)
719 FILE *log;
720 char *buf;
721 int blen;
722 {
723 struct natlog *nl;
724 iplog_t *ipl = (iplog_t *)buf;
725 char *t = line;
726 struct tm *tm;
727 int res, i, len;
728 char *proto;
729
730 nl = (struct natlog *)((char *)ipl + sizeof(*ipl));
731 res = (opts & OPT_RESOLVE) ? 1 : 0;
732 tm = get_tm(ipl->ipl_sec);
733 len = sizeof(line);
734 if (!(opts & OPT_SYSLOG)) {
735 (void) strftime(t, len, "%d/%m/%Y ", tm);
736 i = strlen(t);
737 len -= i;
738 t += i;
739 }
740 (void) strftime(t, len, "%T", tm);
741 t += strlen(t);
742 (void) sprintf(t, ".%-.6ld @%hd ", ipl->ipl_usec, nl->nlg_rule + 1);
743 t += strlen(t);
744
745 if (nl->nlg_type == NL_NEWMAP)
746 strcpy(t, "NAT:MAP ");
747 else if (nl->nlg_type == NL_NEWRDR)
748 strcpy(t, "NAT:RDR ");
749 else if (nl->nlg_type == NL_FLUSH)
750 strcpy(t, "NAT:FLUSH ");
751 else if (nl->nlg_type == NL_EXPIRE)
752 strcpy(t, "NAT:EXPIRE ");
753 else if (nl->nlg_type == NL_NEWBIMAP)
754 strcpy(t, "NAT:BIMAP ");
755 else if (nl->nlg_type == NL_NEWBLOCK)
756 strcpy(t, "NAT:MAPBLOCK ");
757 else if (nl->nlg_type == NL_CLONE)
758 strcpy(t, "NAT:CLONE ");
759 else
760 sprintf(t, "Type: %d ", nl->nlg_type);
761 t += strlen(t);
762
763 proto = getproto(nl->nlg_p);
764
765 (void) sprintf(t, "%s,%s <- -> ", hostname(res, nl->nlg_v,
766 (u_32_t *)&nl->nlg_inip),
767 portname(res, proto, (u_int)nl->nlg_inport));
768 t += strlen(t);
769 (void) sprintf(t, "%s,%s ", hostname(res, nl->nlg_v,
770 (u_32_t *)&nl->nlg_outip),
771 portname(res, proto, (u_int)nl->nlg_outport));
772 t += strlen(t);
773 (void) sprintf(t, "[%s,%s]", hostname(res, nl->nlg_v,
774 (u_32_t *)&nl->nlg_origip),
775 portname(res, proto, (u_int)nl->nlg_origport));
776 t += strlen(t);
777 if (nl->nlg_type == NL_EXPIRE) {
778 #ifdef USE_QUAD_T
779 (void) sprintf(t, " Pkts %qd/%qd Bytes %qd/%qd",
780 (long long)nl->nlg_pkts[0],
781 (long long)nl->nlg_pkts[1],
782 (long long)nl->nlg_bytes[0],
783 (long long)nl->nlg_bytes[1]);
784 #else
785 (void) sprintf(t, " Pkts %ld/%ld Bytes %ld/%ld",
786 nl->nlg_pkts[0], nl->nlg_pkts[1],
787 nl->nlg_bytes[0], nl->nlg_bytes[1]);
788 #endif
789 t += strlen(t);
790 }
791
792 *t++ = '\n';
793 *t++ = '\0';
794 if (opts & OPT_SYSLOG)
795 syslog(LOG_INFO, "%s", line);
796 else
797 (void) fprintf(log, "%s", line);
798 }
799
800
801 static void print_statelog(log, buf, blen)
802 FILE *log;
803 char *buf;
804 int blen;
805 {
806 struct ipslog *sl;
807 iplog_t *ipl = (iplog_t *)buf;
808 char *t = line, *proto;
809 struct tm *tm;
810 int res, i, len;
811
812 sl = (struct ipslog *)((char *)ipl + sizeof(*ipl));
813 res = (opts & OPT_RESOLVE) ? 1 : 0;
814 tm = get_tm(ipl->ipl_sec);
815 len = sizeof(line);
816 if (!(opts & OPT_SYSLOG)) {
817 (void) strftime(t, len, "%d/%m/%Y ", tm);
818 i = strlen(t);
819 len -= i;
820 t += i;
821 }
822 (void) strftime(t, len, "%T", tm);
823 t += strlen(t);
824 (void) sprintf(t, ".%-.6ld ", ipl->ipl_usec);
825 t += strlen(t);
826
827 if (sl->isl_type == ISL_NEW)
828 strcpy(t, "STATE:NEW ");
829 else if (sl->isl_type == ISL_CLONE)
830 strcpy(t, "STATE:CLONED ");
831 else if (sl->isl_type == ISL_EXPIRE) {
832 if ((sl->isl_p == IPPROTO_TCP) &&
833 (sl->isl_state[0] > IPF_TCPS_ESTABLISHED ||
834 sl->isl_state[1] > IPF_TCPS_ESTABLISHED))
835 strcpy(t, "STATE:CLOSE ");
836 else
837 strcpy(t, "STATE:EXPIRE ");
838 } else if (sl->isl_type == ISL_FLUSH)
839 strcpy(t, "STATE:FLUSH ");
840 else if (sl->isl_type == ISL_INTERMEDIATE)
841 strcpy(t, "STATE:INTERMEDIATE ");
842 else if (sl->isl_type == ISL_REMOVE)
843 strcpy(t, "STATE:REMOVE ");
844 else if (sl->isl_type == ISL_KILLED)
845 strcpy(t, "STATE:KILLED ");
846 else
847 sprintf(t, "Type: %d ", sl->isl_type);
848 t += strlen(t);
849
850 proto = getproto(sl->isl_p);
851
852 if (sl->isl_p == IPPROTO_TCP || sl->isl_p == IPPROTO_UDP) {
853 (void) sprintf(t, "%s,%s -> ",
854 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_src),
855 portname(res, proto, (u_int)sl->isl_sport));
856 t += strlen(t);
857 (void) sprintf(t, "%s,%s PR %s",
858 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_dst),
859 portname(res, proto, (u_int)sl->isl_dport), proto);
860 } else if (sl->isl_p == IPPROTO_ICMP) {
861 (void) sprintf(t, "%s -> ", hostname(res, sl->isl_v,
862 (u_32_t *)&sl->isl_src));
863 t += strlen(t);
864 (void) sprintf(t, "%s PR icmp %d",
865 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_dst),
866 sl->isl_itype);
867 } else if (sl->isl_p == IPPROTO_ICMPV6) {
868 (void) sprintf(t, "%s -> ", hostname(res, sl->isl_v,
869 (u_32_t *)&sl->isl_src));
870 t += strlen(t);
871 (void) sprintf(t, "%s PR icmpv6 %d",
872 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_dst),
873 sl->isl_itype);
874 } else {
875 (void) sprintf(t, "%s -> ",
876 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_src));
877 t += strlen(t);
878 (void) sprintf(t, "%s PR %s",
879 hostname(res, sl->isl_v, (u_32_t *)&sl->isl_dst),
880 proto);
881 }
882 t += strlen(t);
883 if (sl->isl_tag != FR_NOLOGTAG) {
884 (void) sprintf(t, " tag %u", sl->isl_tag);
885 t += strlen(t);
886 }
887 if (sl->isl_type != ISL_NEW) {
888 sprintf(t,
889 #ifdef USE_QUAD_T
890 #ifdef PRId64
891 " Forward: Pkts in %" PRId64 " Bytes in %" PRId64
892 " Pkts out %" PRId64 " Bytes out %" PRId64
893 " Backward: Pkts in %" PRId64 " Bytes in %" PRId64
894 " Pkts out %" PRId64 " Bytes out %" PRId64,
895 #else
896 " Forward: Pkts in %qd Bytes in %qd Pkts out %qd Bytes out %qd Backward: Pkts in %qd Bytes in %qd Pkts out %qd Bytes out %qd",
897 #endif /* PRId64 */
898 #else
899 " Forward: Pkts in %ld Bytes in %ld Pkts out %ld Bytes out %ld Backward: Pkts in %ld Bytes in %ld Pkts out %ld Bytes out %ld",
900 #endif
901 sl->isl_pkts[0], sl->isl_bytes[0],
902 sl->isl_pkts[1], sl->isl_bytes[1],
903 sl->isl_pkts[2], sl->isl_bytes[2],
904 sl->isl_pkts[3], sl->isl_bytes[3]);
905
906 t += strlen(t);
907 }
908
909 *t++ = '\n';
910 *t++ = '\0';
911 if (opts & OPT_SYSLOG)
912 syslog(LOG_INFO, "%s", line);
913 else
914 (void) fprintf(log, "%s", line);
915 }
916
917
918 static void print_log(logtype, log, buf, blen)
919 FILE *log;
920 char *buf;
921 int logtype, blen;
922 {
923 iplog_t *ipl;
924 char *bp = NULL, *bpo = NULL;
925 int psize;
926
927 while (blen > 0) {
928 ipl = (iplog_t *)buf;
929 if ((u_long)ipl & (sizeof(long)-1)) {
930 if (bp)
931 bpo = bp;
932 bp = (char *)malloc(blen);
933 if (bp == NULL) {
934 perror("malloc");
935 exit(1);
936 }
937 bcopy((char *)ipl, bp, blen);
938 if (bpo) {
939 free(bpo);
940 bpo = NULL;
941 }
942 buf = bp;
943 continue;
944 }
945
946 psize = ipl->ipl_dsize;
947 if (psize > blen)
948 break;
949
950 if (binarylog) {
951 fwrite(buf, psize, 1, binarylog);
952 fflush(binarylog);
953 }
954
955 if (logtype == IPL_LOGIPF) {
956 if (ipl->ipl_magic == IPL_MAGIC)
957 print_ipflog(log, buf, psize);
958
959 } else if (logtype == IPL_LOGNAT) {
960 if (ipl->ipl_magic == IPL_MAGIC_NAT)
961 print_natlog(log, buf, psize);
962
963 } else if (logtype == IPL_LOGSTATE) {
964 if (ipl->ipl_magic == IPL_MAGIC_STATE)
965 print_statelog(log, buf, psize);
966 }
967
968 blen -= psize;
969 buf += psize;
970 }
971 if (bp)
972 free(bp);
973 return;
974 }
975
976
977 static void print_ipflog(log, buf, blen)
978 FILE *log;
979 char *buf;
980 int blen;
981 {
982 tcphdr_t *tp;
983 struct icmp *ic;
984 struct icmp *icmp;
985 struct tm *tm;
986 char *t, *proto;
987 int i, v, lvl, res, len, off, plen, ipoff, defaction;
988 ip_t *ipc, *ip;
989 u_32_t *s, *d;
990 u_short hl, p;
991 ipflog_t *ipf;
992 iplog_t *ipl;
993 #ifdef USE_INET6
994 ip6_t *ip6;
995 #endif
996
997 ipl = (iplog_t *)buf;
998 ipf = (ipflog_t *)((char *)buf + sizeof(*ipl));
999 ip = (ip_t *)((char *)ipf + sizeof(*ipf));
1000 v = IP_V(ip);
1001 res = (opts & OPT_RESOLVE) ? 1 : 0;
1002 t = line;
1003 *t = '\0';
1004 tm = get_tm(ipl->ipl_sec);
1005
1006 len = sizeof(line);
1007 if (!(opts & OPT_SYSLOG)) {
1008 (void) strftime(t, len, "%d/%m/%Y ", tm);
1009 i = strlen(t);
1010 len -= i;
1011 t += i;
1012 }
1013 (void) strftime(t, len, "%T", tm);
1014 t += strlen(t);
1015 (void) sprintf(t, ".%-.6ld ", ipl->ipl_usec);
1016 t += strlen(t);
1017 if (ipl->ipl_count > 1) {
1018 (void) sprintf(t, "%dx ", ipl->ipl_count);
1019 t += strlen(t);
1020 }
1021 #if (defined(MENTAT) || \
1022 (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
1023 (defined(__FreeBSD__) && (__FreeBSD_version >= 501113)) || \
1024 (defined(OpenBSD) && (OpenBSD >= 199603))) || defined(linux)
1025 {
1026 char ifname[sizeof(ipf->fl_ifname) + 1];
1027
1028 strncpy(ifname, ipf->fl_ifname, sizeof(ipf->fl_ifname));
1029 ifname[sizeof(ipf->fl_ifname)] = '\0';
1030 (void) sprintf(t, "%s", ifname);
1031 t += strlen(t);
1032 # if defined(MENTAT) || defined(linux)
1033 if (ISALPHA(*(t - 1))) {
1034 sprintf(t, "%d", ipf->fl_unit);
1035 t += strlen(t);
1036 }
1037 # endif
1038 }
1039 #else
1040 for (len = 0; len < 3; len++)
1041 if (ipf->fl_ifname[len] == '\0')
1042 break;
1043 if (ipf->fl_ifname[len])
1044 len++;
1045 (void) sprintf(t, "%*.*s%u", len, len, ipf->fl_ifname, ipf->fl_unit);
1046 t += strlen(t);
1047 #endif
1048 #if defined(__sgi) || defined(_AIX51) || defined(__powerpc__) || \
1049 defined(__arm__)
1050 if ((ipf->fl_group[0] == 255) && (ipf->fl_group[1] == '\0'))
1051 #else
1052 if ((ipf->fl_group[0] == -1) && (ipf->fl_group[1] == '\0'))
1053 #endif
1054 strcat(t, " @-1:");
1055 else if (ipf->fl_group[0] == '\0')
1056 (void) strcpy(t, " @0:");
1057 else
1058 (void) sprintf(t, " @%s:", ipf->fl_group);
1059 t += strlen(t);
1060 if (ipf->fl_rule == 0xffffffff)
1061 strcat(t, "-1 ");
1062 else
1063 (void) sprintf(t, "%u ", ipf->fl_rule + 1);
1064 t += strlen(t);
1065
1066 lvl = LOG_NOTICE;
1067
1068 if (ipf->fl_lflags & FI_SHORT) {
1069 *t++ = 'S';
1070 lvl = LOG_ERR;
1071 }
1072
1073 if (FR_ISPASS(ipf->fl_flags)) {
1074 if (ipf->fl_flags & FR_LOGP)
1075 *t++ = 'p';
1076 else
1077 *t++ = 'P';
1078 } else if (FR_ISBLOCK(ipf->fl_flags)) {
1079 if (ipf->fl_flags & FR_LOGB)
1080 *t++ = 'b';
1081 else
1082 *t++ = 'B';
1083 lvl = LOG_WARNING;
1084 } else if ((ipf->fl_flags & FR_LOGMASK) == FR_LOG) {
1085 *t++ = 'L';
1086 lvl = LOG_INFO;
1087 } else if (ipf->fl_flags & FF_LOGNOMATCH) {
1088 *t++ = 'n';
1089 } else {
1090 *t++ = '?';
1091 lvl = LOG_EMERG;
1092 }
1093 if (ipf->fl_loglevel != 0xffff)
1094 lvl = ipf->fl_loglevel;
1095 *t++ = ' ';
1096 *t = '\0';
1097
1098 if (v == 6) {
1099 #ifdef USE_INET6
1100 off = 0;
1101 ipoff = 0;
1102 hl = sizeof(ip6_t);
1103 ip6 = (ip6_t *)ip;
1104 p = (u_short)ip6->ip6_nxt;
1105 s = (u_32_t *)&ip6->ip6_src;
1106 d = (u_32_t *)&ip6->ip6_dst;
1107 plen = hl + ntohs(ip6->ip6_plen);
1108 #else
1109 sprintf(t, "ipv6");
1110 goto printipflog;
1111 #endif
1112 } else if (v == 4) {
1113 hl = IP_HL(ip) << 2;
1114 ipoff = ip->ip_off;
1115 off = ipoff & IP_OFFMASK;
1116 p = (u_short)ip->ip_p;
1117 s = (u_32_t *)&ip->ip_src;
1118 d = (u_32_t *)&ip->ip_dst;
1119 plen = ip->ip_len;
1120 } else {
1121 goto printipflog;
1122 }
1123 proto = getproto(p);
1124
1125 if ((p == IPPROTO_TCP || p == IPPROTO_UDP) && !off) {
1126 tp = (tcphdr_t *)((char *)ip + hl);
1127 if (!(ipf->fl_lflags & FI_SHORT)) {
1128 (void) sprintf(t, "%s,%s -> ", hostname(res, v, s),
1129 portname(res, proto, (u_int)tp->th_sport));
1130 t += strlen(t);
1131 (void) sprintf(t, "%s,%s PR %s len %hu %hu",
1132 hostname(res, v, d),
1133 portname(res, proto, (u_int)tp->th_dport),
1134 proto, hl, plen);
1135 t += strlen(t);
1136
1137 if (p == IPPROTO_TCP) {
1138 *t++ = ' ';
1139 *t++ = '-';
1140 for (i = 0; tcpfl[i].value; i++)
1141 if (tp->th_flags & tcpfl[i].value)
1142 *t++ = tcpfl[i].flag;
1143 if (opts & OPT_VERBOSE) {
1144 (void) sprintf(t, " %lu %lu %hu",
1145 (u_long)(ntohl(tp->th_seq)),
1146 (u_long)(ntohl(tp->th_ack)),
1147 ntohs(tp->th_win));
1148 t += strlen(t);
1149 }
1150 }
1151 *t = '\0';
1152 } else {
1153 (void) sprintf(t, "%s -> ", hostname(res, v, s));
1154 t += strlen(t);
1155 (void) sprintf(t, "%s PR %s len %hu %hu",
1156 hostname(res, v, d), proto, hl, plen);
1157 }
1158 } else if ((p == IPPROTO_ICMPV6) && !off && (v == 6)) {
1159 ic = (struct icmp *)((char *)ip + hl);
1160 (void) sprintf(t, "%s -> ", hostname(res, v, s));
1161 t += strlen(t);
1162 (void) sprintf(t, "%s PR icmpv6 len %hu %hu icmpv6 %s",
1163 hostname(res, v, d), hl, plen,
1164 icmpname6(ic->icmp_type, ic->icmp_code));
1165 } else if ((p == IPPROTO_ICMP) && !off && (v == 4)) {
1166 ic = (struct icmp *)((char *)ip + hl);
1167 (void) sprintf(t, "%s -> ", hostname(res, v, s));
1168 t += strlen(t);
1169 (void) sprintf(t, "%s PR icmp len %hu %hu icmp %s",
1170 hostname(res, v, d), hl, plen,
1171 icmpname(ic->icmp_type, ic->icmp_code));
1172 if (ic->icmp_type == ICMP_UNREACH ||
1173 ic->icmp_type == ICMP_SOURCEQUENCH ||
1174 ic->icmp_type == ICMP_PARAMPROB ||
1175 ic->icmp_type == ICMP_REDIRECT ||
1176 ic->icmp_type == ICMP_TIMXCEED) {
1177 ipc = &ic->icmp_ip;
1178 i = ntohs(ipc->ip_len);
1179 /*
1180 * XXX - try to guess endian of ip_len in ICMP
1181 * returned data.
1182 */
1183 if (i > 1500)
1184 i = ipc->ip_len;
1185 ipoff = ntohs(ipc->ip_off);
1186 proto = getproto(ipc->ip_p);
1187
1188 if (!(ipoff & IP_OFFMASK) &&
1189 ((ipc->ip_p == IPPROTO_TCP) ||
1190 (ipc->ip_p == IPPROTO_UDP))) {
1191 tp = (tcphdr_t *)((char *)ipc + hl);
1192 t += strlen(t);
1193 (void) sprintf(t, " for %s,%s -",
1194 HOSTNAME_V4(res, ipc->ip_src),
1195 portname(res, proto,
1196 (u_int)tp->th_sport));
1197 t += strlen(t);
1198 (void) sprintf(t, " %s,%s PR %s len %hu %hu",
1199 HOSTNAME_V4(res, ipc->ip_dst),
1200 portname(res, proto,
1201 (u_int)tp->th_dport),
1202 proto, IP_HL(ipc) << 2, i);
1203 } else if (!(ipoff & IP_OFFMASK) &&
1204 (ipc->ip_p == IPPROTO_ICMP)) {
1205 icmp = (icmphdr_t *)((char *)ipc + hl);
1206
1207 t += strlen(t);
1208 (void) sprintf(t, " for %s -",
1209 HOSTNAME_V4(res, ipc->ip_src));
1210 t += strlen(t);
1211 (void) sprintf(t,
1212 " %s PR icmp len %hu %hu icmp %d/%d",
1213 HOSTNAME_V4(res, ipc->ip_dst),
1214 IP_HL(ipc) << 2, i,
1215 icmp->icmp_type, icmp->icmp_code);
1216 } else {
1217 t += strlen(t);
1218 (void) sprintf(t, " for %s -",
1219 HOSTNAME_V4(res, ipc->ip_src));
1220 t += strlen(t);
1221 (void) sprintf(t, " %s PR %s len %hu (%hu)",
1222 HOSTNAME_V4(res, ipc->ip_dst), proto,
1223 IP_HL(ipc) << 2, i);
1224 t += strlen(t);
1225 if (ipoff & IP_OFFMASK) {
1226 (void) sprintf(t,
1227 "(frag %d:%hu@%hu%s%s)",
1228 ntohs(ipc->ip_id),
1229 i - (IP_HL(ipc) << 2),
1230 (ipoff & IP_OFFMASK) << 3,
1231 ipoff & IP_MF ? "+" : "",
1232 ipoff & IP_DF ? "-" : "");
1233 }
1234 }
1235
1236 }
1237 } else {
1238 (void) sprintf(t, "%s -> ", hostname(res, v, s));
1239 t += strlen(t);
1240 (void) sprintf(t, "%s PR %s len %hu (%hu)",
1241 hostname(res, v, d), proto, hl, plen);
1242 t += strlen(t);
1243 if (off & IP_OFFMASK)
1244 (void) sprintf(t, " (frag %d:%hu@%hu%s%s)",
1245 ntohs(ip->ip_id),
1246 plen - hl, (off & IP_OFFMASK) << 3,
1247 ipoff & IP_MF ? "+" : "",
1248 ipoff & IP_DF ? "-" : "");
1249 }
1250 t += strlen(t);
1251
1252 printipflog:
1253 if (ipf->fl_flags & FR_KEEPSTATE) {
1254 (void) strcpy(t, " K-S");
1255 t += strlen(t);
1256 }
1257
1258 if (ipf->fl_flags & FR_KEEPFRAG) {
1259 (void) strcpy(t, " K-F");
1260 t += strlen(t);
1261 }
1262
1263 if (ipf->fl_dir == 0)
1264 strcpy(t, " IN");
1265 else if (ipf->fl_dir == 1)
1266 strcpy(t, " OUT");
1267 t += strlen(t);
1268 if (ipf->fl_logtag != 0) {
1269 sprintf(t, " log-tag %d", ipf->fl_logtag);
1270 t += strlen(t);
1271 }
1272 if (ipf->fl_nattag.ipt_num[0] != 0) {
1273 strcpy(t, " nat-tag ");
1274 t += strlen(t);
1275 strncpy(t, ipf->fl_nattag.ipt_tag, sizeof(ipf->fl_nattag));
1276 t += strlen(t);
1277 }
1278 if ((ipf->fl_lflags & FI_LOWTTL) != 0) {
1279 strcpy(t, " low-ttl");
1280 t += 8;
1281 }
1282 if ((ipf->fl_lflags & FI_OOW) != 0) {
1283 if (ipf->fl_lflags & FI_NEG_OOW) {
1284 strcpy(t, " NEG_OOW");
1285 t += sizeof (" NEG_OOW") - 1;
1286 } else {
1287 strcpy(t, " OOW");
1288 t += sizeof (" OOW") - 1;
1289 }
1290 }
1291 if ((ipf->fl_lflags & FI_BAD) != 0) {
1292 strcpy(t, " bad");
1293 t += 4;
1294 }
1295 if ((ipf->fl_lflags & FI_NATED) != 0) {
1296 strcpy(t, " NAT");
1297 t += 4;
1298 }
1299 if ((ipf->fl_lflags & FI_BADNAT) != 0) {
1300 strcpy(t, " bad-NAT");
1301 t += 8;
1302 }
1303 if ((ipf->fl_lflags & FI_BADSRC) != 0) {
1304 strcpy(t, " bad-src");
1305 t += 8;
1306 }
1307 if ((ipf->fl_lflags & FI_MULTICAST) != 0) {
1308 strcpy(t, " multicast");
1309 t += 10;
1310 }
1311 if ((ipf->fl_lflags & FI_BROADCAST) != 0) {
1312 strcpy(t, " broadcast");
1313 t += 10;
1314 }
1315 if ((ipf->fl_lflags & (FI_MULTICAST|FI_BROADCAST|FI_MBCAST)) ==
1316 FI_MBCAST) {
1317 strcpy(t, " mbcast");
1318 t += 7;
1319 }
1320 *t++ = '\n';
1321 *t++ = '\0';
1322 defaction = 0;
1323 if (conf_file != NULL)
1324 defaction = check_action(buf, line, opts, lvl);
1325 if (defaction == 0) {
1326 if (opts & OPT_SYSLOG)
1327 syslog(lvl, "%s", line);
1328 else
1329 (void) fprintf(log, "%s", line);
1330 if (opts & OPT_HEXHDR)
1331 dumphex(log, opts, buf,
1332 sizeof(iplog_t) + sizeof(*ipf));
1333 if (opts & OPT_HEXBODY)
1334 dumphex(log, opts, (char *)ip,
1335 ipf->fl_plen + ipf->fl_hlen);
1336 else if ((opts & OPT_LOGBODY) && (ipf->fl_flags & FR_LOGBODY))
1337 dumphex(log, opts, (char *)ip + ipf->fl_hlen,
1338 ipf->fl_plen);
1339 }
1340 }
1341
1342
1343 static void usage(prog)
1344 char *prog;
1345 {
1346 fprintf(stderr, "%s: [-abDFhnpstvxX] %s %s %s %s %s %s %s\n",
1347 prog, "[-G|-z zonename]", "[-N device]",
1348 "[ [-o [NSI]] [-O [NSI]]", "[-P pidfile]", "[-S device]",
1349 "[-f device]", "filename");
1350 exit(1);
1351 }
1352
1353
1354 static void write_pid(file)
1355 char *file;
1356 {
1357 FILE *fp = NULL;
1358 int fd;
1359
1360 if ((fd = open(file, O_CREAT|O_TRUNC|O_WRONLY, 0644)) >= 0) {
1361 fp = fdopen(fd, "w");
1362 if (fp == NULL) {
1363 close(fd);
1364 fprintf(stderr,
1365 "unable to open/create pid file: %s\n", file);
1366 return;
1367 }
1368 fprintf(fp, "%d", getpid());
1369 fclose(fp);
1370 }
1371 }
1372
1373
1374 static void flushlogs(file, log)
1375 char *file;
1376 FILE *log;
1377 {
1378 int fd, flushed = 0;
1379
1380 if ((fd = open(file, O_RDWR)) == -1) {
1381 (void) fprintf(stderr, "%s: open: %s\n",
1382 file, STRERROR(errno));
1383 exit(1);
1384 }
1385
1386 if (setzone(fd) != 0) {
1387 close(fd);
1388 exit(1);
1389 }
1390
1391 if (ioctl(fd, SIOCIPFFB, &flushed) == 0) {
1392 printf("%d bytes flushed from log buffer\n",
1393 flushed);
1394 fflush(stdout);
1395 } else
1396 perror("SIOCIPFFB");
1397 (void) close(fd);
1398
1399 if (flushed) {
1400 if (opts & OPT_SYSLOG)
1401 syslog(LOG_INFO, "%d bytes flushed from log\n",
1402 flushed);
1403 else if (log != stdout)
1404 fprintf(log, "%d bytes flushed from log\n", flushed);
1405 }
1406 }
1407
1408
1409 static void logopts(turnon, options)
1410 int turnon;
1411 char *options;
1412 {
1413 int flags = 0;
1414 char *s;
1415
1416 for (s = options; *s; s++)
1417 {
1418 switch (*s)
1419 {
1420 case 'N' :
1421 flags |= OPT_NAT;
1422 break;
1423 case 'S' :
1424 flags |= OPT_STATE;
1425 break;
1426 case 'I' :
1427 flags |= OPT_FILTER;
1428 break;
1429 default :
1430 fprintf(stderr, "Unknown log option %c\n", *s);
1431 exit(1);
1432 }
1433 }
1434
1435 if (turnon)
1436 opts |= flags;
1437 else
1438 opts &= ~(flags);
1439 }
1440
1441
1442 int main(argc, argv)
1443 int argc;
1444 char *argv[];
1445 {
1446 struct stat sb;
1447 FILE *log = stdout;
1448 FILE *fp;
1449 int fd[3], doread, n, i;
1450 int tr, nr, regular[3], c;
1451 int fdt[3], devices = 0, make_daemon = 0;
1452 char buf[DEFAULT_IPFLOGSIZE], *iplfile[3], *s;
1453 extern int optind;
1454 extern char *optarg;
1455 const char *optstr = "?abB:C:Df:G:FhnN:o:O:pP:sS:tvxXz:";
1456
1457 fd[0] = fd[1] = fd[2] = -1;
1458 fdt[0] = fdt[1] = fdt[2] = -1;
1459 iplfile[0] = IPL_NAME;
1460 iplfile[1] = IPNAT_NAME;
1461 iplfile[2] = IPSTATE_NAME;
1462
1463 /*
1464 * We need to set the zone name before calling openlog in
1465 * the switch statement below
1466 */
1467 getzoneopt(argc, argv, optstr);
1468
1469 while ((c = getopt(argc, argv, optstr)) != -1)
1470 switch (c)
1471 {
1472 case 'a' :
1473 opts |= OPT_LOGALL;
1474 fdt[0] = IPL_LOGIPF;
1475 fdt[1] = IPL_LOGNAT;
1476 fdt[2] = IPL_LOGSTATE;
1477 break;
1478 case 'b' :
1479 opts |= OPT_LOGBODY;
1480 break;
1481 case 'B' :
1482 binarylogfile = optarg;
1483 binarylog = fopen(optarg, "a");
1484 break;
1485 case 'C' :
1486 conf_file = optarg;
1487 break;
1488 case 'D' :
1489 make_daemon = 1;
1490 break;
1491 case 'f' : case 'I' :
1492 opts |= OPT_FILTER;
1493 fdt[0] = IPL_LOGIPF;
1494 iplfile[0] = optarg;
1495 break;
1496 case 'F' :
1497 flushlogs(iplfile[0], log);
1498 flushlogs(iplfile[1], log);
1499 flushlogs(iplfile[2], log);
1500 break;
1501 case 'G' :
1502 /* Already handled by getzoneopt() above */
1503 break;
1504 case 'n' :
1505 opts |= OPT_RESOLVE;
1506 break;
1507 case 'N' :
1508 opts |= OPT_NAT;
1509 fdt[1] = IPL_LOGNAT;
1510 iplfile[1] = optarg;
1511 break;
1512 case 'o' : case 'O' :
1513 logopts(c == 'o', optarg);
1514 fdt[0] = fdt[1] = fdt[2] = -1;
1515 if (opts & OPT_FILTER)
1516 fdt[0] = IPL_LOGIPF;
1517 if (opts & OPT_NAT)
1518 fdt[1] = IPL_LOGNAT;
1519 if (opts & OPT_STATE)
1520 fdt[2] = IPL_LOGSTATE;
1521 break;
1522 case 'p' :
1523 opts |= OPT_PORTNUM;
1524 break;
1525 case 'P' :
1526 pidfile = optarg;
1527 break;
1528 case 's' :
1529 s = strrchr(argv[0], '/');
1530 if (s == NULL)
1531 s = argv[0];
1532 else
1533 s++;
1534 openlog(s, LOG_NDELAY|LOG_PID, LOGFAC);
1535 s = NULL;
1536 opts |= OPT_SYSLOG;
1537 log = NULL;
1538 break;
1539 case 'S' :
1540 opts |= OPT_STATE;
1541 fdt[2] = IPL_LOGSTATE;
1542 iplfile[2] = optarg;
1543 break;
1544 case 't' :
1545 opts |= OPT_TAIL;
1546 break;
1547 case 'v' :
1548 opts |= OPT_VERBOSE;
1549 break;
1550 case 'x' :
1551 opts |= OPT_HEXBODY;
1552 break;
1553 case 'X' :
1554 opts |= OPT_HEXHDR;
1555 break;
1556 case 'z' :
1557 /* Already handled by getzoneopt() above */
1558 break;
1559 default :
1560 case 'h' :
1561 case '?' :
1562 usage(argv[0]);
1563 }
1564
1565 init_tabs();
1566 if (conf_file)
1567 if (load_config(conf_file) == -1)
1568 exit(1);
1569
1570 /*
1571 * Default action is to only open the filter log file.
1572 */
1573 if ((fdt[0] == -1) && (fdt[1] == -1) && (fdt[2] == -1))
1574 fdt[0] = IPL_LOGIPF;
1575
1576 for (i = 0; i < 3; i++) {
1577 if (fdt[i] == -1)
1578 continue;
1579 if (!strcmp(iplfile[i], "-"))
1580 fd[i] = 0;
1581 else {
1582 if ((fd[i] = open(iplfile[i], O_RDONLY)) == -1) {
1583 (void) fprintf(stderr,
1584 "%s: open: %s\n", iplfile[i],
1585 STRERROR(errno));
1586 exit(1);
1587 /* NOTREACHED */
1588 }
1589 if (fstat(fd[i], &sb) == -1) {
1590 (void) fprintf(stderr, "%d: fstat: %s\n",
1591 fd[i], STRERROR(errno));
1592 exit(1);
1593 /* NOTREACHED */
1594 }
1595
1596 if (setzone(fd[i]) != 0) {
1597 close(fd[i]);
1598 exit(1);
1599 }
1600
1601 if (!(regular[i] = !S_ISCHR(sb.st_mode)))
1602 devices++;
1603 }
1604 }
1605
1606 if (!(opts & OPT_SYSLOG)) {
1607 logfile = argv[optind];
1608 log = logfile ? fopen(logfile, "a") : stdout;
1609 if (log == NULL) {
1610 (void) fprintf(stderr, "%s: fopen: %s\n",
1611 argv[optind], STRERROR(errno));
1612 exit(1);
1613 /* NOTREACHED */
1614 }
1615 setvbuf(log, NULL, _IONBF, 0);
1616 } else
1617 log = NULL;
1618
1619 if (make_daemon && ((log != stdout) || (opts & OPT_SYSLOG))) {
1620 #if BSD >= 199306
1621 daemon(0, !(opts & OPT_SYSLOG));
1622 #else
1623 int pid;
1624 if ((pid = fork()) > 0)
1625 exit(0);
1626 if (pid < 0) {
1627 (void) fprintf(stderr, "%s: fork() failed: %s\n",
1628 argv[0], STRERROR(errno));
1629 exit(1);
1630 /* NOTREACHED */
1631 }
1632 setsid();
1633 if ((opts & OPT_SYSLOG))
1634 close(2);
1635 #endif /* !BSD */
1636 close(0);
1637 close(1);
1638 }
1639 write_pid(pidfile);
1640
1641 signal(SIGHUP, handlehup);
1642
1643 for (doread = 1; doread; ) {
1644 nr = 0;
1645
1646 for (i = 0; i < 3; i++) {
1647 tr = 0;
1648 if (fdt[i] == -1)
1649 continue;
1650 if (!regular[i]) {
1651 if (ioctl(fd[i], FIONREAD, &tr) == -1) {
1652 if (opts & OPT_SYSLOG)
1653 syslog(LOG_CRIT,
1654 "ioctl(FIONREAD): %m");
1655 else
1656 perror("ioctl(FIONREAD)");
1657 exit(1);
1658 /* NOTREACHED */
1659 }
1660 } else {
1661 tr = (lseek(fd[i], 0, SEEK_CUR) < sb.st_size);
1662 if (!tr && !(opts & OPT_TAIL))
1663 doread = 0;
1664 }
1665 if (!tr)
1666 continue;
1667 nr += tr;
1668
1669 tr = read_log(fd[i], &n, buf, sizeof(buf));
1670 if (donehup) {
1671 if (logfile && (fp = fopen(logfile, "a"))) {
1672 fclose(log);
1673 log = fp;
1674 }
1675 if (binarylogfile && (fp = fopen(binarylogfile, "a"))) {
1676 fclose(binarylog);
1677 binarylog = fp;
1678 }
1679 init_tabs();
1680 if (conf_file != NULL)
1681 load_config(conf_file);
1682 donehup = 0;
1683 }
1684
1685 switch (tr)
1686 {
1687 case -1 :
1688 if (opts & OPT_SYSLOG)
1689 syslog(LOG_CRIT, "read: %m\n");
1690 else
1691 perror("read");
1692 doread = 0;
1693 break;
1694 case 1 :
1695 if (opts & OPT_SYSLOG)
1696 syslog(LOG_CRIT, "aborting logging\n");
1697 else
1698 fprintf(log, "aborting logging\n");
1699 doread = 0;
1700 break;
1701 case 2 :
1702 break;
1703 case 0 :
1704 if (n > 0) {
1705 print_log(fdt[i], log, buf, n);
1706 if (!(opts & OPT_SYSLOG))
1707 fflush(log);
1708 }
1709 break;
1710 }
1711 }
1712 if (!nr && ((opts & OPT_TAIL) || devices))
1713 sleep(1);
1714 }
1715 return(0);
1716 /* NOTREACHED */
1717 }
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