1 /* $OpenBSD: pfctl_osfp.c,v 1.8 2004/02/27 10:42:00 henning Exp $ */
2 /* $DragonFly: src/usr.sbin/pfctl/pfctl_osfp.c,v 1.1 2004/09/21 21:25:28 joerg Exp $ */
5 * Copyright (c) 2003 Mike Frantzen <frantzen@openbsd.org>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/types.h>
21 #include <sys/ioctl.h>
22 #include <sys/socket.h>
25 #include <net/pf/pfvar.h>
34 #include "pfctl_parser.h"
38 # define MIN(a,b) (((a) < (b)) ? (a) : (b))
41 # define MAX(a,b) (((a) > (b)) ? (a) : (b))
46 # define DEBUG(fp, str, v...) \
47 fprintf(stderr, "%s:%s:%s " str "\n", (fp)->fp_os.fp_class_nm, \
48 (fp)->fp_os.fp_version_nm, (fp)->fp_os.fp_subtype_nm , ## v);
50 # define DEBUG(fp, str, v...) ((void)0)
55 LIST_HEAD(name_list, name_entry);
57 LIST_ENTRY(name_entry) nm_entry;
59 char nm_name[PF_OSFP_LEN];
61 struct name_list nm_sublist;
64 struct name_list classes = LIST_HEAD_INITIALIZER(&classes);
66 int fingerprint_count;
68 void add_fingerprint(int, int, struct pf_osfp_ioctl *);
69 struct name_entry *fingerprint_name_entry(struct name_list *, char *);
70 void pfctl_flush_my_fingerprints(struct name_list *);
71 char *get_field(char **, size_t *, int *);
72 int get_int(char **, size_t *, int *, int *, const char *,
73 int, int, const char *, int);
74 int get_str(char **, size_t *, char **, const char *, int,
76 int get_tcpopts(const char *, int, const char *,
77 pf_tcpopts_t *, int *, int *, int *, int *, int *,
79 void import_fingerprint(struct pf_osfp_ioctl *);
80 const char *print_ioctl(struct pf_osfp_ioctl *);
81 void print_name_list(int, struct name_list *, const char *);
82 void sort_name_list(int, struct name_list *);
83 struct name_entry *lookup_name_list(struct name_list *, const char *);
85 /* Load fingerprints from a file */
87 pfctl_file_fingerprints(int dev, int opts, const char *fp_filename)
93 int window, w_mod, ttl, df, psize, p_mod, mss, mss_mod, wscale,
94 wscale_mod, optcnt, ts0;
95 pf_tcpopts_t packed_tcpopts;
96 char *class, *version, *subtype, *desc, *tcpopts;
97 struct pf_osfp_ioctl fp;
99 pfctl_flush_my_fingerprints(&classes);
101 if ((in = fopen(fp_filename, "r")) == NULL) {
102 warn("fopen(%s)", fp_filename);
105 class = version = subtype = desc = tcpopts = NULL;
107 if ((opts & PF_OPT_NOACTION) == 0)
108 pfctl_clear_fingerprints(dev, opts);
110 while ((line = fgetln(in, &len)) != NULL) {
122 class = version = subtype = desc = tcpopts = NULL;
123 memset(&fp, 0, sizeof(fp));
125 /* Chop off comment */
126 for (i = 0; i < len; i++)
127 if (line[i] == '#') {
131 /* Chop off whitespace */
132 while (len > 0 && isspace(line[len - 1]))
134 while (len > 0 && isspace(line[0])) {
141 #define T_DC 0x01 /* Allow don't care */
142 #define T_MSS 0x02 /* Allow MSS multiple */
143 #define T_MTU 0x04 /* Allow MTU multiple */
144 #define T_MOD 0x08 /* Allow modulus */
146 #define GET_INT(v, mod, n, ty, mx) \
147 get_int(&line, &len, &v, mod, n, ty, mx, fp_filename, lineno)
148 #define GET_STR(v, n, mn) \
149 get_str(&line, &len, &v, n, mn, fp_filename, lineno)
151 if (GET_INT(window, &w_mod, "window size", T_DC|T_MSS|T_MTU|
153 GET_INT(ttl, NULL, "ttl", 0, 0xff) ||
154 GET_INT(df, NULL, "don't fragment frag", 0, 1) ||
155 GET_INT(psize, &p_mod, "overall packet size", T_MOD|T_DC,
157 GET_STR(tcpopts, "TCP Options", 1) ||
158 GET_STR(class, "OS class", 1) ||
159 GET_STR(version, "OS version", 0) ||
160 GET_STR(subtype, "OS subtype", 0) ||
161 GET_STR(desc, "OS description", 2))
163 if (get_tcpopts(fp_filename, lineno, tcpopts, &packed_tcpopts,
164 &optcnt, &mss, &mss_mod, &wscale, &wscale_mod, &ts0))
167 fprintf(stderr, "%s:%d excess field\n", fp_filename,
174 fp.fp_flags |= PF_OSFP_DF;
179 fp.fp_flags |= PF_OSFP_WSIZE_DC;
182 fp.fp_flags |= PF_OSFP_WSIZE_MSS;
185 fp.fp_flags |= PF_OSFP_WSIZE_MTU;
188 fp.fp_flags |= PF_OSFP_WSIZE_MOD;
191 fp.fp_wsize = window;
195 fp.fp_flags |= PF_OSFP_PSIZE_DC;
198 fp.fp_flags |= PF_OSFP_PSIZE_MOD;
203 switch (wscale_mod) {
205 fp.fp_flags |= PF_OSFP_WSCALE_DC;
208 fp.fp_flags |= PF_OSFP_WSCALE_MOD;
210 fp.fp_wscale = wscale;
214 fp.fp_flags |= PF_OSFP_MSS_DC;
217 fp.fp_flags |= PF_OSFP_MSS_MOD;
222 fp.fp_tcpopts = packed_tcpopts;
223 fp.fp_optcnt = optcnt;
225 fp.fp_flags |= PF_OSFP_TS0;
228 fp.fp_os.fp_enflags |= PF_OSFP_GENERIC;
230 fp.fp_os.fp_enflags |= PF_OSFP_NODETAIL;
232 if (class[0] == '@' || class[0] == '*')
233 strlcpy(fp.fp_os.fp_class_nm, class + 1,
234 sizeof(fp.fp_os.fp_class_nm));
236 strlcpy(fp.fp_os.fp_class_nm, class,
237 sizeof(fp.fp_os.fp_class_nm));
238 strlcpy(fp.fp_os.fp_version_nm, version,
239 sizeof(fp.fp_os.fp_version_nm));
240 strlcpy(fp.fp_os.fp_subtype_nm, subtype,
241 sizeof(fp.fp_os.fp_subtype_nm));
243 add_fingerprint(dev, opts, &fp);
257 if (opts & PF_OPT_VERBOSE2)
258 printf("Loaded %d passive OS fingerprints\n",
263 /* flush the kernel's fingerprints */
265 pfctl_clear_fingerprints(int dev, int opts __unused)
267 if (ioctl(dev, DIOCOSFPFLUSH))
268 err(1, "DIOCOSFPFLUSH");
271 /* flush pfctl's view of the fingerprints */
273 pfctl_flush_my_fingerprints(struct name_list *list)
275 struct name_entry *nm;
277 while ((nm = LIST_FIRST(list)) != NULL) {
278 LIST_REMOVE(nm, nm_entry);
279 pfctl_flush_my_fingerprints(&nm->nm_sublist);
286 /* Fetch the active fingerprints from the kernel */
288 pfctl_load_fingerprints(int dev, int opts __unused)
290 struct pf_osfp_ioctl io;
293 pfctl_flush_my_fingerprints(&classes);
295 for (i = 0; i >= 0; i++) {
296 memset(&io, 0, sizeof(io));
298 if (ioctl(dev, DIOCOSFPGET, &io)) {
304 import_fingerprint(&io);
309 /* List the fingerprints */
311 pfctl_show_fingerprints(int opts)
313 if (LIST_FIRST(&classes) != NULL) {
314 if (opts & PF_OPT_SHOWALL) {
315 pfctl_print_title("OS FINGERPRINTS:");
316 printf("%u fingerprints loaded\n", fingerprint_count);
318 printf("Class\tVersion\tSubtype(subversion)\n");
319 printf("-----\t-------\t-------------------\n");
320 sort_name_list(opts, &classes);
321 print_name_list(opts, &classes, "");
326 /* Lookup a fingerprint */
328 pfctl_get_fingerprint(const char *name)
330 struct name_entry *nm, *class_nm, *version_nm, *subtype_nm;
331 pf_osfp_t ret = PF_OSFP_NOMATCH;
332 int class, version, subtype;
333 int unp_class, unp_version, unp_subtype;
334 int wr_len, version_len, subtype_len;
337 if (strcasecmp(name, "unknown") == 0)
338 return (PF_OSFP_UNKNOWN);
340 /* Try most likely no version and no subtype */
341 if ((nm = lookup_name_list(&classes, name))) {
343 version = PF_OSFP_ANY;
344 subtype = PF_OSFP_ANY;
348 /* Chop it up into class/version/subtype */
350 if ((wr_name = strdup(name)) == NULL)
352 if ((ptr = index(wr_name, ' ')) == NULL) {
354 return (PF_OSFP_NOMATCH);
358 /* The class is easy to find since it is delimited by a space */
359 if ((class_nm = lookup_name_list(&classes, wr_name)) == NULL) {
361 return (PF_OSFP_NOMATCH);
363 class = class_nm->nm_num;
366 if ((version_nm = lookup_name_list(&class_nm->nm_sublist, ptr)))
368 version = version_nm->nm_num;
369 subtype = PF_OSFP_ANY;
376 * There must be a version and a subtype.
377 * We'll do some fuzzy matching to pick up things like:
378 * Linux 2.2.14 (version=2.2 subtype=14)
379 * FreeBSD 4.0-STABLE (version=4.0 subtype=STABLE)
380 * Windows 2000 SP2 (version=2000 subtype=SP2)
382 #define CONNECTOR(x) ((x) == '.' || (x) == ' ' || (x) == '\t' || (x) == '-')
383 wr_len = strlen(ptr);
384 LIST_FOREACH(version_nm, &class_nm->nm_sublist, nm_entry) {
385 version_len = strlen(version_nm->nm_name);
386 if (wr_len < version_len + 2 ||
387 !CONNECTOR(ptr[version_len]))
389 /* first part of the string must be version */
390 if (strncasecmp(ptr, version_nm->nm_name,
394 LIST_FOREACH(subtype_nm, &version_nm->nm_sublist,
396 subtype_len = strlen(subtype_nm->nm_name);
397 if (wr_len != version_len + subtype_len + 1)
400 /* last part of the string must be subtype */
401 if (strcasecmp(&ptr[version_len+1],
402 subtype_nm->nm_name) != 0)
406 version = version_nm->nm_num;
407 subtype = subtype_nm->nm_num;
414 return (PF_OSFP_NOMATCH);
418 PF_OSFP_PACK(ret, class, version, subtype);
419 if (ret != PF_OSFP_NOMATCH) {
420 PF_OSFP_UNPACK(ret, unp_class, unp_version, unp_subtype);
421 if (class != unp_class) {
422 fprintf(stderr, "warning: fingerprint table overflowed "
424 return (PF_OSFP_NOMATCH);
426 if (version != unp_version) {
427 fprintf(stderr, "warning: fingerprint table overflowed "
429 return (PF_OSFP_NOMATCH);
431 if (subtype != unp_subtype) {
432 fprintf(stderr, "warning: fingerprint table overflowed "
434 return (PF_OSFP_NOMATCH);
437 if (ret == PF_OSFP_ANY) {
438 /* should never happen */
439 fprintf(stderr, "warning: fingerprint packed to 'any'\n");
440 return (PF_OSFP_NOMATCH);
446 /* Lookup a fingerprint name by ID */
448 pfctl_lookup_fingerprint(pf_osfp_t fp, char *buf, size_t len)
450 int class, version, subtype;
451 struct name_list *list;
452 struct name_entry *nm;
454 char *class_name, *version_name, *subtype_name;
455 class_name = version_name = subtype_name = NULL;
457 if (fp == PF_OSFP_UNKNOWN) {
458 strlcpy(buf, "unknown", len);
461 if (fp == PF_OSFP_ANY) {
462 strlcpy(buf, "any", len);
466 PF_OSFP_UNPACK(fp, class, version, subtype);
467 if (class >= (1 << _FP_CLASS_BITS) ||
468 version >= (1 << _FP_VERSION_BITS) ||
469 subtype >= (1 << _FP_SUBTYPE_BITS)) {
470 warnx("PF_OSFP_UNPACK(0x%x) failed!!", fp);
471 strlcpy(buf, "nomatch", len);
475 LIST_FOREACH(nm, &classes, nm_entry) {
476 if (nm->nm_num == class) {
477 class_name = nm->nm_name;
478 if (version == PF_OSFP_ANY)
480 list = &nm->nm_sublist;
481 LIST_FOREACH(nm, list, nm_entry) {
482 if (nm->nm_num == version) {
483 version_name = nm->nm_name;
484 if (subtype == PF_OSFP_ANY)
486 list = &nm->nm_sublist;
487 LIST_FOREACH(nm, list, nm_entry) {
488 if (nm->nm_num == subtype) {
493 } /* foreach subtype */
494 strlcpy(buf, "nomatch", len);
497 } /* foreach version */
498 strlcpy(buf, "nomatch", len);
501 } /* foreach class */
503 strlcpy(buf, "nomatch", len);
507 snprintf(buf, len, "%s", class_name);
509 strlcat(buf, " ", len);
510 strlcat(buf, version_name, len);
512 if (index(version_name, ' '))
513 strlcat(buf, " ", len);
514 else if (index(version_name, '.') &&
515 isdigit(*subtype_name))
516 strlcat(buf, ".", len);
518 strlcat(buf, " ", len);
519 strlcat(buf, subtype_name, len);
525 /* lookup a name in a list */
527 lookup_name_list(struct name_list *list, const char *name)
529 struct name_entry *nm;
530 LIST_FOREACH(nm, list, nm_entry)
531 if (strcasecmp(name, nm->nm_name) == 0)
539 add_fingerprint(int dev, int opts, struct pf_osfp_ioctl *fp)
541 struct pf_osfp_ioctl fptmp;
542 struct name_entry *nm_class, *nm_version, *nm_subtype;
543 int class, version, subtype;
545 /* We expand #-# or #.#-#.# version/subtypes into multiple fingerprints */
546 #define EXPAND(field) do { \
547 int _dot = -1, _start = -1, _end = -1, _i = 0; \
548 /* pick major version out of #.# */ \
549 if (isdigit(fp->field[_i]) && fp->field[_i+1] == '.') { \
550 _dot = fp->field[_i] - '0'; \
553 if (isdigit(fp->field[_i])) \
554 _start = fp->field[_i++] - '0'; \
557 if (isdigit(fp->field[_i])) \
558 _start = (_start * 10) + fp->field[_i++] - '0'; \
559 if (fp->field[_i++] != '-') \
561 if (isdigit(fp->field[_i]) && fp->field[_i+1] == '.' && \
562 fp->field[_i] - '0' == _dot) \
564 else if (_dot != -1) \
566 if (isdigit(fp->field[_i])) \
567 _end = fp->field[_i++] - '0'; \
570 if (isdigit(fp->field[_i])) \
571 _end = (_end * 10) + fp->field[_i++] - '0'; \
572 if (isdigit(fp->field[_i])) \
573 _end = (_end * 10) + fp->field[_i++] - '0'; \
574 if (fp->field[_i] != '\0') \
576 memcpy(&fptmp, fp, sizeof(fptmp)); \
577 for (;_start <= _end; _start++) { \
578 memset(fptmp.field, 0, sizeof(fptmp.field)); \
579 fptmp.fp_os.fp_enflags |= PF_OSFP_EXPANDED; \
581 snprintf(fptmp.field, sizeof(fptmp.field), \
584 snprintf(fptmp.field, sizeof(fptmp.field), \
585 "%d.%d", _dot, _start); \
586 add_fingerprint(dev, opts, &fptmp); \
590 /* We allow "#-#" as a version or subtype and we'll expand it */
591 EXPAND(fp_os.fp_version_nm);
592 EXPAND(fp_os.fp_subtype_nm);
594 if (strcasecmp(fp->fp_os.fp_class_nm, "nomatch") == 0)
595 errx(1, "fingerprint class \"nomatch\" is reserved");
597 version = PF_OSFP_ANY;
598 subtype = PF_OSFP_ANY;
600 nm_class = fingerprint_name_entry(&classes, fp->fp_os.fp_class_nm);
601 if (nm_class->nm_num == 0)
602 nm_class->nm_num = ++class_count;
603 class = nm_class->nm_num;
605 nm_version = fingerprint_name_entry(&nm_class->nm_sublist,
606 fp->fp_os.fp_version_nm);
608 if (nm_version->nm_num == 0)
609 nm_version->nm_num = ++nm_class->nm_sublist_num;
610 version = nm_version->nm_num;
611 nm_subtype = fingerprint_name_entry(&nm_version->nm_sublist,
612 fp->fp_os.fp_subtype_nm);
614 if (nm_subtype->nm_num == 0)
616 ++nm_version->nm_sublist_num;
617 subtype = nm_subtype->nm_num;
622 DEBUG(fp, "\tsignature %d:%d:%d %s", class, version, subtype,
625 PF_OSFP_PACK(fp->fp_os.fp_os, class, version, subtype);
628 #ifdef FAKE_PF_KERNEL
629 /* Linked to the sys/net/pf/pf_osfp.c. Call pf_osfp_add() */
630 if ((errno = pf_osfp_add(fp)))
632 if ((opts & PF_OPT_NOACTION) == 0 && ioctl(dev, DIOCOSFPADD, fp))
633 #endif /* FAKE_PF_KERNEL */
635 if (errno == EEXIST) {
636 warn("Duplicate signature for %s %s %s",
637 fp->fp_os.fp_class_nm,
638 fp->fp_os.fp_version_nm,
639 fp->fp_os.fp_subtype_nm);
642 err(1, "DIOCOSFPADD");
647 /* import a fingerprint from the kernel */
649 import_fingerprint(struct pf_osfp_ioctl *fp)
651 struct name_entry *nm_class, *nm_version, *nm_subtype;
652 int class, version, subtype;
654 PF_OSFP_UNPACK(fp->fp_os.fp_os, class, version, subtype);
656 nm_class = fingerprint_name_entry(&classes, fp->fp_os.fp_class_nm);
657 if (nm_class->nm_num == 0) {
658 nm_class->nm_num = class;
659 class_count = MAX(class_count, class);
662 nm_version = fingerprint_name_entry(&nm_class->nm_sublist,
663 fp->fp_os.fp_version_nm);
665 if (nm_version->nm_num == 0) {
666 nm_version->nm_num = version;
667 nm_class->nm_sublist_num = MAX(nm_class->nm_sublist_num,
670 nm_subtype = fingerprint_name_entry(&nm_version->nm_sublist,
671 fp->fp_os.fp_subtype_nm);
673 if (nm_subtype->nm_num == 0) {
674 nm_subtype->nm_num = subtype;
675 nm_version->nm_sublist_num =
676 MAX(nm_version->nm_sublist_num, subtype);
683 DEBUG(fp, "import signature %d:%d:%d", class, version, subtype);
686 /* Find an entry for a fingerprints class/version/subtype */
688 fingerprint_name_entry(struct name_list *list, char *name)
690 struct name_entry *nm_entry;
692 if (name == NULL || strlen(name) == 0)
695 LIST_FOREACH(nm_entry, list, nm_entry) {
696 if (strcasecmp(nm_entry->nm_name, name) == 0) {
697 /* We'll move this to the front of the list later */
698 LIST_REMOVE(nm_entry, nm_entry);
702 if (nm_entry == NULL) {
703 nm_entry = calloc(1, sizeof(*nm_entry));
704 if (nm_entry == NULL)
706 LIST_INIT(&nm_entry->nm_sublist);
707 strlcpy(nm_entry->nm_name, name,
708 sizeof(nm_entry->nm_name));
710 LIST_INSERT_HEAD(list, nm_entry, nm_entry);
716 print_name_list(int opts, struct name_list *nml, const char *prefix)
719 struct name_entry *nm;
721 LIST_FOREACH(nm, nml, nm_entry) {
722 snprintf(newprefix, sizeof(newprefix), "%s%s\t", prefix,
724 printf("%s\n", newprefix);
725 print_name_list(opts, &nm->nm_sublist, newprefix);
730 sort_name_list(int opts, struct name_list *nml)
732 struct name_list new;
733 struct name_entry *nm, *nmsearch, *nmlast;
735 /* yes yes, it's a very slow sort. so sue me */
739 while ((nm = LIST_FIRST(nml)) != NULL) {
740 LIST_REMOVE(nm, nm_entry);
742 LIST_FOREACH(nmsearch, &new, nm_entry) {
743 if (strcasecmp(nmsearch->nm_name, nm->nm_name) > 0) {
744 LIST_INSERT_BEFORE(nmsearch, nm, nm_entry);
749 if (nmsearch == NULL) {
751 LIST_INSERT_AFTER(nmlast, nm, nm_entry);
753 LIST_INSERT_HEAD(&new, nm, nm_entry);
756 sort_name_list(opts, &nm->nm_sublist);
759 while ((nm = LIST_FIRST(&new)) != NULL) {
760 LIST_REMOVE(nm, nm_entry);
762 LIST_INSERT_HEAD(nml, nm, nm_entry);
764 LIST_INSERT_AFTER(nmlast, nm, nm_entry);
770 /* parse the next integer in a formatted config file line */
772 get_int(char **line, size_t *len, int *var, int *mod,
773 const char *name, int flags, int max, const char *filename, int lineno)
783 field = get_field(line, len, &fieldlen);
787 fprintf(stderr, "%s:%d empty %s\n", filename, lineno, name);
792 if ((*field == '%' || *field == 'S' || *field == 'T' || *field == '*')
796 if (mod && (flags & T_MSS))
802 if (mod && (flags & T_MTU))
809 fprintf(stderr, "%s:%d long '%c' %s\n",
810 filename, lineno, *field, name);
813 if (mod && (flags & T_DC)) {
818 if (mod && (flags & T_MOD))
821 fprintf(stderr, "%s:%d modulus %s must have a "
822 "value\n", filename, lineno, name);
827 if (mod == NULL || *mod == 0) {
828 fprintf(stderr, "%s:%d does not allow %c' %s\n",
829 filename, lineno, *field, name);
835 for (; i < fieldlen; i++) {
836 if (field[i] < '0' || field[i] > '9') {
837 fprintf(stderr, "%s:%d non-digit character in %s\n",
838 filename, lineno, name);
841 val = val * 10 + field[i] - '0';
843 fprintf(stderr, "%s:%d %s overflowed\n", filename,
850 fprintf(stderr, "%s:%d %s value %ld > %d\n", filename, lineno,
859 /* parse the next string in a formatted config file line */
861 get_str(char **line, size_t *len, char **v, const char *name, int minlen,
862 const char *filename, int lineno)
867 ptr = get_field(line, len, &fieldlen);
870 if (fieldlen < minlen) {
871 fprintf(stderr, "%s:%d too short %s\n", filename, lineno, name);
874 if ((*v = malloc(fieldlen + 1)) == NULL) {
878 memcpy(*v, ptr, fieldlen);
879 (*v)[fieldlen] = '\0';
884 /* Parse out the TCP opts */
886 get_tcpopts(const char *filename, int lineno, const char *tcpopts,
887 pf_tcpopts_t *packed, int *optcnt, int *mss, int *mss_mod, int *wscale,
888 int *wscale_mod, int *ts0)
899 if (strcmp(tcpopts, ".") == 0)
902 for (i = 0; tcpopts[i] && (size_t)*optcnt < PF_OSFP_MAX_OPTS;) {
903 switch ((opt = toupper(tcpopts[i++]))) {
904 case 'N': /* FALLTHROUGH */
906 *packed = (*packed << PF_OSFP_TCPOPT_BITS) |
907 (opt == 'N' ? PF_OSFP_TCPOPT_NOP :
908 PF_OSFP_TCPOPT_SACK);
910 case 'W': /* FALLTHROUGH */
912 int *this_mod, *this;
916 this_mod = wscale_mod;
924 *packed = (*packed << PF_OSFP_TCPOPT_BITS) |
925 (opt == 'W' ? PF_OSFP_TCPOPT_WSCALE :
927 if (tcpopts[i] == '*' && (tcpopts[i + 1] == '\0' ||
928 tcpopts[i + 1] == ',')) {
934 if (tcpopts[i] == '%') {
939 if (!isdigit(tcpopts[i])) {
940 fprintf(stderr, "%s:%d unknown "
941 "character '%c' in %c TCP opt\n",
942 filename, lineno, tcpopts[i], opt);
945 *this = (*this * 10) + tcpopts[i++] - '0';
946 } while(tcpopts[i] != ',' && tcpopts[i] != '\0');
950 if (tcpopts[i] == '0') {
954 *packed = (*packed << PF_OSFP_TCPOPT_BITS) |
959 if (tcpopts[i] == '\0')
961 if (tcpopts[i] != ',') {
962 fprintf(stderr, "%s:%d unknown option to %c TCP opt\n",
963 filename, lineno, opt);
972 /* rip the next field ouf of a formatted config file line */
974 get_field(char **line, size_t *len, int *fieldlen)
976 char *ret, *ptr = *line;
980 while (plen && isspace(*ptr)) {
987 for (; plen > 0 && *ptr != ':'; plen--, ptr++)
995 while (*fieldlen && isspace(ret[*fieldlen - 1]))
1002 print_ioctl(struct pf_osfp_ioctl *fp)
1004 static char buf[1024];
1009 if (fp->fp_flags & PF_OSFP_WSIZE_DC)
1010 strlcat(buf, "*", sizeof(buf));
1011 else if (fp->fp_flags & PF_OSFP_WSIZE_MSS)
1012 strlcat(buf, "S", sizeof(buf));
1013 else if (fp->fp_flags & PF_OSFP_WSIZE_MTU)
1014 strlcat(buf, "T", sizeof(buf));
1016 if (fp->fp_flags & PF_OSFP_WSIZE_MOD)
1017 strlcat(buf, "%", sizeof(buf));
1018 snprintf(tmp, sizeof(tmp), "%d", fp->fp_wsize);
1019 strlcat(buf, tmp, sizeof(buf));
1021 strlcat(buf, ":", sizeof(buf));
1023 snprintf(tmp, sizeof(tmp), "%d", fp->fp_ttl);
1024 strlcat(buf, tmp, sizeof(buf));
1025 strlcat(buf, ":", sizeof(buf));
1027 if (fp->fp_flags & PF_OSFP_DF)
1028 strlcat(buf, "1", sizeof(buf));
1030 strlcat(buf, "0", sizeof(buf));
1031 strlcat(buf, ":", sizeof(buf));
1033 if (fp->fp_flags & PF_OSFP_PSIZE_DC)
1034 strlcat(buf, "*", sizeof(buf));
1036 if (fp->fp_flags & PF_OSFP_PSIZE_MOD)
1037 strlcat(buf, "%", sizeof(buf));
1038 snprintf(tmp, sizeof(tmp), "%d", fp->fp_psize);
1039 strlcat(buf, tmp, sizeof(buf));
1041 strlcat(buf, ":", sizeof(buf));
1043 if (fp->fp_optcnt == 0)
1044 strlcat(buf, ".", sizeof(buf));
1045 for (i = fp->fp_optcnt - 1; i >= 0; i--) {
1046 opt = fp->fp_tcpopts >> (i * PF_OSFP_TCPOPT_BITS);
1047 opt &= (1 << PF_OSFP_TCPOPT_BITS) - 1;
1049 case PF_OSFP_TCPOPT_NOP:
1050 strlcat(buf, "N", sizeof(buf));
1052 case PF_OSFP_TCPOPT_SACK:
1053 strlcat(buf, "S", sizeof(buf));
1055 case PF_OSFP_TCPOPT_TS:
1056 strlcat(buf, "T", sizeof(buf));
1057 if (fp->fp_flags & PF_OSFP_TS0)
1058 strlcat(buf, "0", sizeof(buf));
1060 case PF_OSFP_TCPOPT_MSS:
1061 strlcat(buf, "M", sizeof(buf));
1062 if (fp->fp_flags & PF_OSFP_MSS_DC)
1063 strlcat(buf, "*", sizeof(buf));
1065 if (fp->fp_flags & PF_OSFP_MSS_MOD)
1066 strlcat(buf, "%", sizeof(buf));
1067 snprintf(tmp, sizeof(tmp), "%d", fp->fp_mss);
1068 strlcat(buf, tmp, sizeof(buf));
1071 case PF_OSFP_TCPOPT_WSCALE:
1072 strlcat(buf, "W", sizeof(buf));
1073 if (fp->fp_flags & PF_OSFP_WSCALE_DC)
1074 strlcat(buf, "*", sizeof(buf));
1076 if (fp->fp_flags & PF_OSFP_WSCALE_MOD)
1077 strlcat(buf, "%", sizeof(buf));
1078 snprintf(tmp, sizeof(tmp), "%d", fp->fp_wscale);
1079 strlcat(buf, tmp, sizeof(buf));
1085 strlcat(buf, ",", sizeof(buf));
1087 strlcat(buf, ":", sizeof(buf));
1089 strlcat(buf, fp->fp_os.fp_class_nm, sizeof(buf));
1090 strlcat(buf, ":", sizeof(buf));
1091 strlcat(buf, fp->fp_os.fp_version_nm, sizeof(buf));
1092 strlcat(buf, ":", sizeof(buf));
1093 strlcat(buf, fp->fp_os.fp_subtype_nm, sizeof(buf));
1094 strlcat(buf, ":", sizeof(buf));
1096 snprintf(tmp, sizeof(tmp), "TcpOpts %d 0x%llx", fp->fp_optcnt,
1097 (long long int)fp->fp_tcpopts);
1098 strlcat(buf, tmp, sizeof(buf));