4 * Copyright (C) 2012 by Darren Reed.
6 * See the IPFILTER.LICENCE file for details on licencing.
9 static const char sccsid[] = "@(#)ip_fil.c 2.41 6/5/96 (C) 1993-2000 Darren Reed";
10 static const char rcsid[] = "@(#)$Id$";
25 static char *portcmp[] = { "*", "==", "!=", "<", ">", "<=", ">=", "**", "***" };
28 int intcmp __P((const void *, const void *));
29 static void indent __P((FILE *, int));
30 static void printeq __P((FILE *, char *, int, int, int));
31 static void printipeq __P((FILE *, char *, int, int, int));
32 static void addrule __P((FILE *, frentry_t *));
33 static void printhooks __P((FILE *, int, int, frgroup_t *));
34 static void emitheader __P((frgroup_t *, u_int, u_int));
35 static void emitGroup __P((int, int, void *, frentry_t *, char *,
37 static void emittail __P((void));
38 static void printCgroup __P((int, frentry_t *, mc_t *, char *));
59 static FILE *cfile = NULL;
62 * This is called once per filter rule being loaded to emit data structures
74 if (fr->fr_family == 6)
76 if ((fr->fr_type != FR_T_IPF) && (fr->fr_type != FR_T_NONE))
78 if ((fr->fr_type == FR_T_IPF) &&
79 ((fr->fr_datype != FRI_NORMAL) || (fr->fr_satype != FRI_NORMAL)))
84 cfile = fopen("ip_rules.c", "w");
90 fprintf(fp, "* Copyright (C) 2012 by Darren Reed.\n");
92 fprintf(fp, "* Redistribution and use in source and binary forms are permitted\n");
93 fprintf(fp, "* provided that this notice is preserved and due credit is given\n");
94 fprintf(fp, "* to the original author and the contributors.\n");
95 fprintf(fp, "*/\n\n");
97 fprintf(fp, "#include <sys/param.h>\n");
98 fprintf(fp, "#include <sys/types.h>\n");
99 fprintf(fp, "#include <sys/time.h>\n");
100 fprintf(fp, "#include <sys/socket.h>\n");
101 fprintf(fp, "#if (__FreeBSD_version >= 40000)\n");
102 fprintf(fp, "# if defined(_KERNEL)\n");
103 fprintf(fp, "# include <sys/libkern.h>\n");
104 fprintf(fp, "# else\n");
105 fprintf(fp, "# include <sys/unistd.h>\n");
106 fprintf(fp, "# endif\n");
107 fprintf(fp, "#endif\n");
108 fprintf(fp, "#if (__NetBSD_Version__ >= 399000000)\n");
109 fprintf(fp, "#else\n");
110 fprintf(fp, "# if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__sgi)\n");
111 fprintf(fp, "# include <sys/systm.h>\n");
112 fprintf(fp, "# endif\n");
113 fprintf(fp, "#endif\n");
114 fprintf(fp, "#include <sys/errno.h>\n");
115 fprintf(fp, "#include <sys/param.h>\n");
117 "#if !defined(__SVR4) && !defined(__svr4__) && !defined(__hpux)\n");
118 fprintf(fp, "# include <sys/mbuf.h>\n");
119 fprintf(fp, "#endif\n");
121 "#if defined(__FreeBSD__) && (__FreeBSD_version > 220000)\n");
122 fprintf(fp, "# include <sys/sockio.h>\n");
123 fprintf(fp, "#else\n");
124 fprintf(fp, "# include <sys/ioctl.h>\n");
125 fprintf(fp, "#endif /* FreeBSD */\n");
126 fprintf(fp, "#include <net/if.h>\n");
127 fprintf(fp, "#include <netinet/in.h>\n");
128 fprintf(fp, "#include <netinet/in_systm.h>\n");
129 fprintf(fp, "#include <netinet/ip.h>\n");
130 fprintf(fp, "#include <netinet/tcp.h>\n");
131 fprintf(fp, "#include \"netinet/ip_compat.h\"\n");
132 fprintf(fp, "#include \"netinet/ip_fil.h\"\n\n");
133 fprintf(fp, "#include \"netinet/ip_rules.h\"\n\n");
134 fprintf(fp, "#ifndef _KERNEL\n");
135 fprintf(fp, "# include <string.h>\n");
136 fprintf(fp, "#endif /* _KERNEL */\n");
138 fprintf(fp, "#ifdef IPFILTER_COMPILED\n");
140 fprintf(fp, "extern ipf_main_softc_t ipfmain;\n");
145 fr->fr_type |= FR_T_BUILTIN;
149 if (i & -(1 - sizeof(*ulp)))
151 for (i /= sizeof(u_long), ulp = (u_long *)fr; i > 0; i--) {
152 fprintf(fp, "%s%#lx", and, *ulp++);
155 fprintf(fp, "\n};\n");
156 fr->fr_type &= ~FR_T_BUILTIN;
164 static frgroup_t *groups = NULL;
167 static void addrule(fp, fr)
179 f = (frentry_t *)malloc(sizeof(*f));
180 bcopy((char *)fr, (char *)f, sizeof(*fr));
182 f->fr_ipf = (fripf_t *)malloc(sizeof(*f->fr_ipf));
183 bcopy((char *)fr->fr_ipf, (char *)f->fr_ipf,
184 sizeof(*fr->fr_ipf));
188 gname = FR_NAME(fr, fr_group);
190 for (g = groups; g != NULL; g = g->fg_next)
191 if ((strncmp(g->fg_name, gname, FR_GROUPLEN) == 0) &&
192 (g->fg_flags == (f->fr_flags & FR_INOUT)))
196 g = (frgroup_t *)calloc(1, sizeof(*g));
200 strncpy(g->fg_name, gname, FR_GROUPLEN);
202 g->fg_flags = f->fr_flags & FR_INOUT;
205 for (fpp = &g->fg_start; *fpp != NULL; )
206 fpp = &((*fpp)->fr_next);
209 if (fr->fr_dsize > 0) {
211 static u_long ipf%s_rule_data_%s_%u[] = {\n",
212 f->fr_flags & FR_INQUE ? "in" : "out",
213 g->fg_name, g->fg_ref);
217 for (i /= sizeof(u_long); i > 0; i--) {
218 fprintf(fp, "%s%#lx", and, *ulp++);
221 fprintf(fp, "\n};\n");
224 fprintf(fp, "\nstatic u_long %s_rule_%s_%d[] = {\n",
225 f->fr_flags & FR_INQUE ? "in" : "out", g->fg_name, g->fg_ref);
229 if (f->fr_grhead != -1) {
230 ghead = FR_NAME(f, fr_grhead);
231 for (g = groups; g != NULL; g = g->fg_next)
232 if ((strncmp(g->fg_name, ghead, FR_GROUPLEN) == 0) &&
233 g->fg_flags == (f->fr_flags & FR_INOUT))
236 g = (frgroup_t *)calloc(1, sizeof(*g));
240 strncpy(g->fg_name, ghead, FR_GROUPLEN);
242 g->fg_flags = f->fr_flags & FR_INOUT;
251 const mc_t *i1 = (const mc_t *)c1, *i2 = (const mc_t *)c2;
253 if (i1->n == i2->n) {
254 return i1->c - i2->c;
256 return i2->n - i1->n;
260 static void indent(fp, in)
268 static void printeq(fp, var, m, max, v)
274 fprintf(fp, "%s == %#x) {\n", var, v);
276 fprintf(fp, "(%s & %#x) == %#x) {\n", var, m, v);
280 * Parameters: var - IP# being compared
281 * fl - 0 for positive match, 1 for negative match
283 * v - required address
285 static void printipeq(fp, var, fl, m, v)
291 fprintf(fp, "%s ", var);
293 fprintf(fp, "(%s & %#x) ", var, m);
294 fprintf(fp, "%c", fl ? '!' : '=');
295 fprintf(fp, "= %#x) {\n", v);
299 void emit(num, dir, v, fr)
308 for (g = groups; g != NULL; g = g->fg_next) {
309 if (dir == 0 || dir == -1) {
310 if ((g->fg_flags & FR_INQUE) == 0)
312 for (incnt = 0, f = g->fg_start; f != NULL;
315 emitGroup(num, dir, v, fr, g->fg_name, incnt, 0);
317 if (dir == 1 || dir == -1) {
318 if ((g->fg_flags & FR_OUTQUE) == 0)
320 for (outcnt = 0, f = g->fg_start; f != NULL;
323 emitGroup(num, dir, v, fr, g->fg_name, 0, outcnt);
327 if (num == -1 && dir == -1) {
328 for (g = groups; g != NULL; g = g->fg_next) {
329 if ((g->fg_flags & FR_INQUE) != 0) {
330 for (incnt = 0, f = g->fg_start; f != NULL;
334 emitheader(g, incnt, 0);
336 if ((g->fg_flags & FR_OUTQUE) != 0) {
337 for (outcnt = 0, f = g->fg_start; f != NULL;
341 emitheader(g, 0, outcnt);
345 fprintf(cfile, "#endif /* IPFILTER_COMPILED */\n");
351 static void emitheader(grp, incount, outcount)
353 u_int incount, outcount;
355 static FILE *fph = NULL;
359 fph = fopen("ip_rules.h", "w");
363 fprintf(fph, "extern int ipfrule_add __P((void));\n");
364 fprintf(fph, "extern int ipfrule_remove __P((void));\n");
367 printhooks(cfile, incount, outcount, grp);
371 extern frentry_t *ipfrule_match_in_%s __P((fr_info_t *, u_32_t *));\n\
372 extern frentry_t *ipf_rules_in_%s[%d];\n",
373 grp->fg_name, grp->fg_name, incount);
375 for (g = groups; g != grp; g = g->fg_next)
376 if ((strncmp(g->fg_name, grp->fg_name,
377 FR_GROUPLEN) == 0) &&
378 g->fg_flags == grp->fg_flags)
382 extern int ipfrule_add_in_%s __P((void));\n\
383 extern int ipfrule_remove_in_%s __P((void));\n", grp->fg_name, grp->fg_name);
388 extern frentry_t *ipfrule_match_out_%s __P((fr_info_t *, u_32_t *));\n\
389 extern frentry_t *ipf_rules_out_%s[%d];\n",
390 grp->fg_name, grp->fg_name, outcount);
392 for (g = groups; g != grp; g = g->fg_next)
393 if ((strncmp(g->fg_name, grp->fg_name,
394 FR_GROUPLEN) == 0) &&
395 g->fg_flags == grp->fg_flags)
399 extern int ipfrule_add_out_%s __P((void));\n\
400 extern int ipfrule_remove_out_%s __P((void));\n",
401 grp->fg_name, grp->fg_name);
406 static void emittail()
415 for (g = groups; g != NULL; g = g->fg_next)
417 err = ipfrule_add_%s_%s();\n\
420 (g->fg_flags & FR_INQUE) ? "in" : "out", g->fg_name);
427 int ipfrule_remove()\n\
431 for (g = groups; g != NULL; g = g->fg_next)
433 err = ipfrule_remove_%s_%s();\n\
436 (g->fg_flags & FR_INQUE) ? "in" : "out", g->fg_name);
439 fprintf(cfile, "}\n");
443 static void emitGroup(num, dir, v, fr, group, incount, outcount)
448 u_int incount, outcount;
450 static FILE *fp = NULL;
451 static int header[2] = { 0, 0 };
452 static char egroup[FR_GROUPLEN] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
453 static int openfunc = 0;
454 static mc_t *n = NULL;
466 if (strncmp(egroup, group, FR_GROUPLEN)) {
467 for (sin--; sin > 0; sin--) {
472 fprintf(fp, "\treturn fr;\n}\n");
482 strncpy(egroup, group, FR_GROUPLEN);
483 } else if (openfunc == 1 && num < 0) {
488 for (sin--; sin > 0; sin--) {
493 fprintf(fp, "\treturn fr;\n}\n");
501 for (g = groups; g != NULL; g = g->fg_next) {
502 if (dir == 0 && (g->fg_flags & FR_INQUE) == 0)
504 else if (dir == 1 && (g->fg_flags & FR_OUTQUE) == 0)
506 if (strncmp(g->fg_name, group, FR_GROUPLEN) != 0)
512 * Output the array of pointers to rules for this group.
514 if (g != NULL && num == -2 && dir == 0 && header[0] == 0 &&
516 fprintf(fp, "\nfrentry_t *ipf_rules_in_%s[%d] = {",
518 for (f = g->fg_start, i = 0; f != NULL; f = f->fr_next) {
519 if ((f->fr_flags & FR_INQUE) == 0)
524 fprintf(fp, "(frentry_t *)&in_rule_%s_%d",
525 FR_NAME(f, fr_group), i);
530 fprintf(fp, "\n};\n");
533 if (g != NULL && num == -2 && dir == 1 && header[0] == 0 &&
535 fprintf(fp, "\nfrentry_t *ipf_rules_out_%s[%d] = {",
537 for (f = g->fg_start, i = 0; f != NULL; f = f->fr_next) {
538 if ((f->fr_flags & FR_OUTQUE) == 0)
543 fprintf(fp, "(frentry_t *)&out_rule_%s_%d",
544 FR_NAME(f, fr_group), i);
545 if (i + 1 < outcount)
549 fprintf(fp, "\n};\n");
560 * If the function header has not been printed then print it now.
562 if (g != NULL && header[dir] == 0) {
563 int pdst = 0, psrc = 0;
566 fprintf(fp, "\nfrentry_t *ipfrule_match_%s_%s(fin, passp)\n",
567 (dir == 0) ? "in" : "out", group);
568 fprintf(fp, "fr_info_t *fin;\n");
569 fprintf(fp, "u_32_t *passp;\n");
571 fprintf(fp, "\tfrentry_t *fr = NULL;\n");
574 * Print out any variables that need to be declared.
576 for (f = g->fg_start, i = 0; f != NULL; f = f->fr_next) {
577 if (incount + outcount > m[FRC_SRC].e + 1)
579 if (incount + outcount > m[FRC_DST].e + 1)
583 fprintf(fp, "\tu_32_t src = ntohl(%s);\n",
584 "fin->fin_fi.fi_saddr");
586 fprintf(fp, "\tu_32_t dst = ntohl(%s);\n",
587 "fin->fin_fi.fi_daddr");
590 for (i = 0; i < FRC_MAX; i++) {
594 if (fr->fr_ifnames[0] != -1)
598 if (ipf != NULL && ipf->fri_mip.fi_v != 0)
602 if (ipf != NULL && ipf->fri_mip.fi_flx != 0)
606 if (ipf != NULL && ipf->fri_mip.fi_p != 0)
610 if (ipf != NULL && ipf->fri_mip.fi_ttl != 0)
614 if (ipf != NULL && ipf->fri_mip.fi_tos != 0)
620 if ((ipf->fri_ip.fi_p == IPPROTO_TCP) &&
627 if (fr->fr_scmp == FR_INRANGE)
629 else if (fr->fr_scmp == FR_OUTRANGE)
631 else if (fr->fr_scmp != 0)
637 if (fr->fr_dcmp == FR_INRANGE)
639 else if (fr->fr_dcmp == FR_OUTRANGE)
641 else if (fr->fr_dcmp != 0)
647 if (fr->fr_satype == FRI_LOOKUP) {
649 } else if ((fr->fr_smask != 0) ||
650 (fr->fr_flags & FR_NOTSRCIP) != 0)
656 if (fr->fr_datype == FRI_LOOKUP) {
658 } else if ((fr->fr_dmask != 0) ||
659 (fr->fr_flags & FR_NOTDSTIP) != 0)
665 if (fr->fr_optmask != 0)
671 if (fr->fr_secmask != 0)
677 if (fr->fr_authmask != 0)
683 if ((fr->fr_icmpm & 0xff00) != 0)
689 if ((fr->fr_icmpm & 0xff) != 0)
701 qsort(m, FRC_MAX, sizeof(mc_t), intcmp);
705 * Calculate the indentation interval upto the last common
706 * common comparison being made.
708 for (i = 0, in = 1; i < FRC_MAX; i++) {
709 if (n[i].c != m[i].c)
711 if (n[i].s != m[i].s)
714 if (n[i].n && (n[i].n > n[i].e)) {
726 for (j = sin - 1; j >= in; j--) {
737 * print out C code that implements a filter rule.
739 for (; i < FRC_MAX; i++) {
745 fprintf(fp, "if (fin->fin_ifp == ");
746 fprintf(fp, "ipf_rules_%s_%s[%d]->fr_ifa) {\n",
747 dir ? "out" : "in", group, num);
754 fprintf(fp, "if (fin->fin_v == %d) {\n",
763 printeq(fp, "fin->fin_flx",
764 ipf->fri_mip.fi_flx, 0xf,
772 fprintf(fp, "if (fin->fin_p == %d) {\n",
781 printeq(fp, "fin->fin_ttl",
782 ipf->fri_mip.fi_ttl, 0xff,
790 fprintf(fp, "if (fin->fin_tos");
791 printeq(fp, "fin->fin_tos",
792 ipf->fri_mip.fi_tos, 0xff,
801 printeq(fp, "fin->fin_tcpf", fr->fr_tcpfm,
809 if (fr->fr_scmp == FR_INRANGE) {
811 fprintf(fp, "if ((fin->fin_data[0] > %d) && ",
813 fprintf(fp, "(fin->fin_data[0] < %d)",
815 fprintf(fp, ") {\n");
817 } else if (fr->fr_scmp == FR_OUTRANGE) {
819 fprintf(fp, "if ((fin->fin_data[0] < %d) || ",
821 fprintf(fp, "(fin->fin_data[0] > %d)",
823 fprintf(fp, ") {\n");
825 } else if (fr->fr_scmp) {
827 fprintf(fp, "if (fin->fin_data[0] %s %d)",
828 portcmp[fr->fr_scmp], fr->fr_sport);
836 if (fr->fr_dcmp == FR_INRANGE) {
838 fprintf(fp, "if ((fin->fin_data[1] > %d) && ",
840 fprintf(fp, "(fin->fin_data[1] < %d)",
842 fprintf(fp, ") {\n");
844 } else if (fr->fr_dcmp == FR_OUTRANGE) {
846 fprintf(fp, "if ((fin->fin_data[1] < %d) || ",
848 fprintf(fp, "(fin->fin_data[1] > %d)",
850 fprintf(fp, ") {\n");
852 } else if (fr->fr_dcmp) {
854 fprintf(fp, "if (fin->fin_data[1] %s %d)",
855 portcmp[fr->fr_dcmp], fr->fr_dport);
863 if (fr->fr_satype == FRI_LOOKUP) {
865 } else if ((fr->fr_smask != 0) ||
866 (fr->fr_flags & FR_NOTSRCIP) != 0) {
870 fr->fr_flags & FR_NOTSRCIP,
871 fr->fr_smask, fr->fr_saddr);
878 if (fr->fr_datype == FRI_LOOKUP) {
880 } else if ((fr->fr_dmask != 0) ||
881 (fr->fr_flags & FR_NOTDSTIP) != 0) {
885 fr->fr_flags & FR_NOTDSTIP,
886 fr->fr_dmask, fr->fr_daddr);
894 printeq(fp, "fin->fin_fi.fi_optmsk",
895 fr->fr_optmask, 0xffffffff,
904 printeq(fp, "fin->fin_fi.fi_secmsk",
905 fr->fr_secmask, 0xffff,
914 printeq(fp, "fin->fin_fi.fi_authmsk",
915 fr->fr_authmask, 0xffff,
924 printeq(fp, "fin->fin_data[0]",
925 fr->fr_icmpm & 0xff00, 0xffff,
926 fr->fr_icmp & 0xff00);
934 printeq(fp, "fin->fin_data[0]",
935 fr->fr_icmpm & 0xff, 0xffff,
945 if (fr->fr_flags & FR_QUICK) {
946 fprintf(fp, "return (frentry_t *)&%s_rule_%s_%d;\n",
947 fr->fr_flags & FR_INQUE ? "in" : "out",
948 FR_NAME(fr, fr_group), num);
950 fprintf(fp, "fr = (frentry_t *)&%s_rule_%s_%d;\n",
951 fr->fr_flags & FR_INQUE ? "in" : "out",
952 FR_NAME(fr, fr_group), num);
955 n = (mc_t *)malloc(sizeof(*n) * FRC_MAX);
956 bcopy((char *)m, (char *)n, sizeof(*n) * FRC_MAX);
964 static mc_t *m = NULL;
968 m = (mc_t *)calloc(1, sizeof(*m) * FRC_MAX);
970 for (g = groups; g != NULL; g = g->fg_next) {
971 if ((dir == 0) && ((g->fg_flags & FR_INQUE) != 0))
972 printCgroup(dir, g->fg_start, m, g->fg_name);
973 if ((dir == 1) && ((g->fg_flags & FR_OUTQUE) != 0))
974 printCgroup(dir, g->fg_start, m, g->fg_name);
977 emit(-1, dir, m, NULL);
982 * Now print out code to implement all of the rules.
984 static void printCgroup(dir, top, m, group)
994 for (count = 0, fr1 = top; fr1 != NULL; fr1 = fr1->fr_next) {
995 if ((dir == 0) && ((fr1->fr_flags & FR_INQUE) != 0))
997 else if ((dir == 1) && ((fr1->fr_flags & FR_OUTQUE) != 0))
1002 emitGroup(-2, dir, m, fr1, group, count, 0);
1004 emitGroup(-2, dir, m, fr1, group, 0, count);
1007 * Before printing each rule, check to see how many of its fields are
1008 * matched by subsequent rules.
1010 for (fr1 = top, rn = 0; fr1 != NULL; fr1 = fr1->fr_next, rn++) {
1011 if (!dir && !(fr1->fr_flags & FR_INQUE))
1013 if (dir && !(fr1->fr_flags & FR_OUTQUE))
1017 for (i = 0; i < FRC_MAX; i++)
1019 qsort(m, FRC_MAX, sizeof(mc_t), intcmp);
1021 for (i = 0; i < FRC_MAX; i++) {
1028 for (fr = fr1->fr_next; fr; fr = fr->fr_next) {
1029 if (!dir && !(fr->fr_flags & FR_INQUE))
1031 if (dir && !(fr->fr_flags & FR_OUTQUE))
1035 !strcmp(fr1->fr_names + fr1->fr_ifnames[0],
1036 fr->fr_names + fr->fr_ifnames[0])) {
1042 if ((n & 0x0002) && (fr1->fr_family == fr->fr_family)) {
1049 (fr->fr_type == fr1->fr_type) &&
1050 (fr->fr_type == FR_T_IPF) &&
1051 (fr1->fr_mip.fi_flx == fr->fr_mip.fi_flx) &&
1052 (fr1->fr_ip.fi_flx == fr->fr_ip.fi_flx)) {
1059 (fr->fr_type == fr1->fr_type) &&
1060 (fr->fr_type == FR_T_IPF) &&
1061 (fr1->fr_proto == fr->fr_proto)) {
1068 (fr->fr_type == fr1->fr_type) &&
1069 (fr->fr_type == FR_T_IPF) &&
1070 (fr1->fr_ttl == fr->fr_ttl)) {
1077 (fr->fr_type == fr1->fr_type) &&
1078 (fr->fr_type == FR_T_IPF) &&
1079 (fr1->fr_tos == fr->fr_tos)) {
1086 (fr->fr_type == fr1->fr_type) &&
1087 (fr->fr_type == FR_T_IPF) &&
1088 ((fr1->fr_tcpfm == fr->fr_tcpfm) &&
1089 (fr1->fr_tcpf == fr->fr_tcpf))) {
1096 (fr->fr_type == fr1->fr_type) &&
1097 (fr->fr_type == FR_T_IPF) &&
1098 ((fr1->fr_scmp == fr->fr_scmp) &&
1099 (fr1->fr_stop == fr->fr_stop) &&
1100 (fr1->fr_sport == fr->fr_sport))) {
1107 (fr->fr_type == fr1->fr_type) &&
1108 (fr->fr_type == FR_T_IPF) &&
1109 ((fr1->fr_dcmp == fr->fr_dcmp) &&
1110 (fr1->fr_dtop == fr->fr_dtop) &&
1111 (fr1->fr_dport == fr->fr_dport))) {
1118 (fr->fr_type == fr1->fr_type) &&
1119 (fr->fr_type == FR_T_IPF) &&
1120 ((fr1->fr_satype == FRI_LOOKUP) &&
1121 (fr->fr_satype == FRI_LOOKUP) &&
1122 (fr1->fr_srcnum == fr->fr_srcnum))) {
1125 } else if ((n & 0x0200) &&
1126 (fr->fr_type == fr1->fr_type) &&
1127 (fr->fr_type == FR_T_IPF) &&
1128 (((fr1->fr_flags & FR_NOTSRCIP) ==
1129 (fr->fr_flags & FR_NOTSRCIP)))) {
1130 if ((fr1->fr_smask == fr->fr_smask) &&
1131 (fr1->fr_saddr == fr->fr_saddr))
1135 if (fr1->fr_smask &&
1136 (fr1->fr_saddr & fr1->fr_smask) ==
1137 (fr->fr_saddr & fr1->fr_smask)) {
1146 (fr->fr_type == fr1->fr_type) &&
1147 (fr->fr_type == FR_T_IPF) &&
1148 ((fr1->fr_datype == FRI_LOOKUP) &&
1149 (fr->fr_datype == FRI_LOOKUP) &&
1150 (fr1->fr_dstnum == fr->fr_dstnum))) {
1153 } else if ((n & 0x0400) &&
1154 (fr->fr_type == fr1->fr_type) &&
1155 (fr->fr_type == FR_T_IPF) &&
1156 (((fr1->fr_flags & FR_NOTDSTIP) ==
1157 (fr->fr_flags & FR_NOTDSTIP)))) {
1158 if ((fr1->fr_dmask == fr->fr_dmask) &&
1159 (fr1->fr_daddr == fr->fr_daddr))
1163 if (fr1->fr_dmask &&
1164 (fr1->fr_daddr & fr1->fr_dmask) ==
1165 (fr->fr_daddr & fr1->fr_dmask)) {
1174 (fr->fr_type == fr1->fr_type) &&
1175 (fr->fr_type == FR_T_IPF) &&
1176 (fr1->fr_optmask == fr->fr_optmask) &&
1177 (fr1->fr_optbits == fr->fr_optbits)) {
1184 (fr->fr_type == fr1->fr_type) &&
1185 (fr->fr_type == FR_T_IPF) &&
1186 (fr1->fr_secmask == fr->fr_secmask) &&
1187 (fr1->fr_secbits == fr->fr_secbits)) {
1193 if ((n & 0x10000) &&
1194 (fr->fr_type == fr1->fr_type) &&
1195 (fr->fr_type == FR_T_IPF) &&
1196 (fr1->fr_authmask == fr->fr_authmask) &&
1197 (fr1->fr_authbits == fr->fr_authbits)) {
1203 if ((n & 0x20000) &&
1204 (fr->fr_type == fr1->fr_type) &&
1205 (fr->fr_type == FR_T_IPF) &&
1206 ((fr1->fr_icmpm & 0xff00) ==
1207 (fr->fr_icmpm & 0xff00)) &&
1208 ((fr1->fr_icmp & 0xff00) ==
1209 (fr->fr_icmp & 0xff00))) {
1215 if ((n & 0x40000) &&
1216 (fr->fr_type == fr1->fr_type) &&
1217 (fr->fr_type == FR_T_IPF) &&
1218 ((fr1->fr_icmpm & 0xff) == (fr->fr_icmpm & 0xff)) &&
1219 ((fr1->fr_icmp & 0xff) == (fr->fr_icmp & 0xff))) {
1228 emitGroup(rn, dir, m, fr1, group, count, 0);
1230 emitGroup(rn, dir, m, fr1, group, 0, count);
1234 static void printhooks(fp, in, out, grp)
1245 group = grp->fg_name;
1250 "printhooks called with both in and out set\n");
1261 fprintf(fp, "static frentry_t ipfrule_%s_%s;\n", instr, group);
1265 int ipfrule_add_%s_%s()\n", instr, group);
1268 int i, j, err = 0, max;\n\
1277 for (i = 0, fr = grp->fg_start; fr != NULL; i++, fr = fr->fr_next)
1278 if (fr->fr_dsize > 0) {
1280 ipf_rules_%s_%s[%d]->fr_data = &ipf%s_rule_data_%s_%u;\n",
1281 instr, grp->fg_name, i,
1282 instr, grp->fg_name, i);
1285 max = sizeof(ipf_rules_%s_%s)/sizeof(frentry_t *);\n\
1286 for (i = 0; i < max; i++) {\n\
1287 fp = ipf_rules_%s_%s[i];\n\
1288 fp->fr_next = NULL;\n", instr, group, instr, group);
1291 for (j = i + 1; j < max; j++)\n\
1292 if (strncmp(fp->fr_names + fp->fr_group,\n\
1293 ipf_rules_%s_%s[j]->fr_names +\n\
1294 ipf_rules_%s_%s[j]->fr_group,\n\
1295 FR_GROUPLEN) == 0) {\n\
1296 if (ipf_rules_%s_%s[j] != NULL)\n\
1297 ipf_rules_%s_%s[j]->fr_pnext =\n\
1299 fp->fr_pnext = &ipf_rules_%s_%s[j];\n\
1300 fp->fr_next = ipf_rules_%s_%s[j];\n\
1302 }\n", instr, group, instr, group, instr, group,
1303 instr, group, instr, group, instr, group);
1307 if (fp->fr_grhead != -1) {\n\
1308 fg = fr_addgroup(fp->fr_names + fp->fr_grhead,\n\
1309 fp, FR_INQUE, IPL_LOGIPF, 0);\n\
1311 fp->fr_grp = &fg->fg_start;\n\
1316 fp = &ipfrule_%s_%s;\n", instr, group);
1318 bzero((char *)fp, sizeof(*fp));\n\
1319 fp->fr_type = FR_T_CALLFUNC_BUILTIN;\n\
1320 fp->fr_flags = FR_%sQUE|FR_NOMATCH;\n\
1321 fp->fr_data = (void *)ipf_rules_%s_%s[0];\n",
1322 (in != 0) ? "IN" : "OUT", instr, group);
1324 fp->fr_dsize = sizeof(ipf_rules_%s_%s[0]);\n",
1328 fp->fr_family = AF_INET;\n\
1329 fp->fr_func = (ipfunc_t)ipfrule_match_%s_%s;\n\
1330 err = frrequest(&ipfmain, IPL_LOGIPF, SIOCADDFR, (caddr_t)fp,\n\
1331 ipfmain.ipf_active, 0);\n",
1333 fprintf(fp, "\treturn err;\n}\n");
1336 int ipfrule_remove_%s_%s()\n", instr, group);
1343 * Try to remove the %sbound rule.\n", instr);
1347 if (ipfrule_%s_%s.fr_ref > 0) {\n", instr, group);
1354 i = sizeof(ipf_rules_%s_%s)/sizeof(frentry_t *) - 1;\n\
1355 for (; i >= 0; i--) {\n\
1356 fp = ipf_rules_%s_%s[i];\n\
1357 if (fp->fr_ref > 1) {\n\
1364 err = frrequest(&ipfmain, IPL_LOGIPF, SIOCDELFR,\n\
1365 (caddr_t)&ipfrule_%s_%s,\n\
1366 ipfmain.ipf_active, 0);\n",
1367 instr, group, instr, group, instr, group);
1373 fprintf(fp, "\treturn err;\n}\n");