contrib/ipfilter/tools/ipf_y.y

   1 /*      $FreeBSD$       */
   2
   3 /*
   4  * Copyright (C) 2012 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  */
   8 %{
   9 #include "ipf.h"
  10 #include <sys/ioctl.h>
  11 #include <syslog.h>
  12 #ifdef IPFILTER_BPF
  13 # include <pcap.h>
  14 #endif
  15 #include "netinet/ip_pool.h"
  16 #include "netinet/ip_htable.h"
  17 #include "netinet/ipl.h"
  18 #include "ipf_l.h"
  19
  20 #define YYDEBUG 1
  21 #define DOALL(x)        for (fr = frc; fr != NULL; fr = fr->fr_next) { x }
  22 #define DOREM(x)        for (; fr != NULL; fr = fr->fr_next) { x }
  23
  24 extern  void    yyerror __P((char *));
  25 extern  int     yyparse __P((void));
  26 extern  int     yylex __P((void));
  27 extern  int     yydebug;
  28 extern  FILE    *yyin;
  29 extern  int     yylineNum;
  30
  31 static  int     addname __P((frentry_t **, char *));
  32 static  frentry_t *addrule __P((void));
  33 static frentry_t *allocfr __P((void));
  34 static  void    build_dstaddr_af __P((frentry_t *, void *));
  35 static  void    build_srcaddr_af __P((frentry_t *, void *));
  36 static  void    dobpf __P((int, char *));
  37 static  void    doipfexpr __P((char *));
  38 static  void    do_tuneint __P((char *, int));
  39 static  void    do_tunestr __P((char *, char *));
  40 static  void    fillgroup __P((frentry_t *));
  41 static  int     lookuphost __P((char *, i6addr_t *));
  42 static  u_int   makehash __P((struct alist_s *));
  43 static  int     makepool __P((struct alist_s *));
  44 static  struct  alist_s *newalist __P((struct alist_s *));
  45 static  void    newrule __P((void));
  46 static  void    resetaddr __P((void));
  47 static  void    setgroup __P((frentry_t **, char *));
  48 static  void    setgrhead __P((frentry_t **, char *));
  49 static  void    seticmphead __P((frentry_t **, char *));
  50 static  void    setifname __P((frentry_t **, int, char *));
  51 static  void    setipftype __P((void));
  52 static  void    setsyslog __P((void));
  53 static  void    unsetsyslog __P((void));
  54
  55 frentry_t       *fr = NULL, *frc = NULL, *frtop = NULL, *frold = NULL;
  56
  57 static  int             ifpflag = 0;
  58 static  int             nowith = 0;
  59 static  int             dynamic = -1;
  60 static  int             pooled = 0;
  61 static  int             hashed = 0;
  62 static  int             nrules = 0;
  63 static  int             newlist = 0;
  64 static  int             added = 0;
  65 static  int             ipffd = -1;
  66 static  int             *yycont = NULL;
  67 static  ioctlfunc_t     ipfioctls[IPL_LOGSIZE];
  68 static  addfunc_t       ipfaddfunc = NULL;
  69
  70 %}
  71 %union  {
  72         char    *str;
  73         u_32_t  num;
  74         frentry_t       fr;
  75         frtuc_t *frt;
  76         struct  alist_s *alist;
  77         u_short port;
  78         struct  in_addr ip4;
  79         struct  {
  80                 u_short p1;
  81                 u_short p2;
  82                 int     pc;
  83         } pc;
  84         struct ipp_s {
  85                 int             type;
  86                 int             ifpos;
  87                 int             f;
  88                 int             v;
  89                 int             lif;
  90                 union   i6addr  a;
  91                 union   i6addr  m;
  92                 char            *name;
  93         } ipp;
  94         struct  {
  95                 i6addr_t        adr;
  96                 int             f;
  97         } adr;
  98         i6addr_t        ip6;
  99         struct  {
 100                 char    *if1;
 101                 char    *if2;
 102         } ifs;
 103         char    gname[FR_GROUPLEN];
 104 };
 105
 106 %type   <port>  portnum
 107 %type   <num>   facility priority icmpcode seclevel secname icmptype
 108 %type   <num>   opt compare range opttype flagset optlist ipv6hdrlist ipv6hdr
 109 %type   <num>   portc porteq ipmask maskopts
 110 %type   <ip4>   ipv4 ipv4_16 ipv4_24
 111 %type   <adr>   hostname
 112 %type   <ipp>   addr ipaddr
 113 %type   <str>   servicename name interfacename groupname
 114 %type   <pc>    portrange portcomp
 115 %type   <alist> addrlist poollist
 116 %type   <ifs>   onname
 117
 118 %token  <num>   YY_NUMBER YY_HEX
 119 %token  <str>   YY_STR
 120 %token          YY_COMMENT
 121 %token          YY_CMP_EQ YY_CMP_NE YY_CMP_LE YY_CMP_GE YY_CMP_LT YY_CMP_GT
 122 %token          YY_RANGE_OUT YY_RANGE_IN
 123 %token  <ip6>   YY_IPV6
 124
 125 %token  IPFY_SET
 126 %token  IPFY_PASS IPFY_BLOCK IPFY_COUNT IPFY_CALL IPFY_NOMATCH
 127 %token  IPFY_RETICMP IPFY_RETRST IPFY_RETICMPASDST
 128 %token  IPFY_IN IPFY_OUT
 129 %token  IPFY_QUICK IPFY_ON IPFY_OUTVIA IPFY_INVIA
 130 %token  IPFY_DUPTO IPFY_TO IPFY_FROUTE IPFY_REPLY_TO IPFY_ROUTETO
 131 %token  IPFY_TOS IPFY_TTL IPFY_PROTO IPFY_INET IPFY_INET6
 132 %token  IPFY_HEAD IPFY_GROUP
 133 %token  IPFY_AUTH IPFY_PREAUTH
 134 %token  IPFY_LOG IPFY_BODY IPFY_FIRST IPFY_LEVEL IPFY_ORBLOCK IPFY_L5AS
 135 %token  IPFY_LOGTAG IPFY_MATCHTAG IPFY_SETTAG IPFY_SKIP IPFY_DECAPS
 136 %token  IPFY_FROM IPFY_ALL IPFY_ANY IPFY_BPFV4 IPFY_BPFV6 IPFY_POOL IPFY_HASH
 137 %token  IPFY_IPFEXPR IPFY_PPS IPFY_FAMILY IPFY_DSTLIST
 138 %token  IPFY_ESP IPFY_AH
 139 %token  IPFY_WITH IPFY_AND IPFY_NOT IPFY_NO IPFY_OPT
 140 %token  IPFY_TCPUDP IPFY_TCP IPFY_UDP
 141 %token  IPFY_FLAGS IPFY_MULTICAST
 142 %token  IPFY_MASK IPFY_BROADCAST IPFY_NETWORK IPFY_NETMASKED IPFY_PEER
 143 %token  IPFY_RPC IPFY_PORT
 144 %token  IPFY_NOW IPFY_COMMENT IPFY_RULETTL
 145 %token  IPFY_ICMP IPFY_ICMPTYPE IPFY_ICMPCODE
 146 %token  IPFY_IPOPTS IPFY_SHORT IPFY_NAT IPFY_BADSRC IPFY_LOWTTL IPFY_FRAG
 147 %token  IPFY_MBCAST IPFY_BAD IPFY_BADNAT IPFY_OOW IPFY_NEWISN IPFY_NOICMPERR
 148 %token  IPFY_KEEP IPFY_STATE IPFY_FRAGS IPFY_LIMIT IPFY_STRICT IPFY_AGE
 149 %token  IPFY_SYNC IPFY_FRAGBODY IPFY_ICMPHEAD IPFY_NOLOG IPFY_LOOSE
 150 %token  IPFY_MAX_SRCS IPFY_MAX_PER_SRC
 151 %token  IPFY_IPOPT_NOP IPFY_IPOPT_RR IPFY_IPOPT_ZSU IPFY_IPOPT_MTUP
 152 %token  IPFY_IPOPT_MTUR IPFY_IPOPT_ENCODE IPFY_IPOPT_TS IPFY_IPOPT_TR
 153 %token  IPFY_IPOPT_SEC IPFY_IPOPT_LSRR IPFY_IPOPT_ESEC IPFY_IPOPT_CIPSO
 154 %token  IPFY_IPOPT_SATID IPFY_IPOPT_SSRR IPFY_IPOPT_ADDEXT IPFY_IPOPT_VISA
 155 %token  IPFY_IPOPT_IMITD IPFY_IPOPT_EIP IPFY_IPOPT_FINN IPFY_IPOPT_DPS
 156 %token  IPFY_IPOPT_SDB IPFY_IPOPT_NSAPA IPFY_IPOPT_RTRALRT IPFY_IPOPT_UMP
 157 %token  IPFY_SECCLASS IPFY_SEC_UNC IPFY_SEC_CONF IPFY_SEC_RSV1 IPFY_SEC_RSV2
 158 %token  IPFY_SEC_RSV4 IPFY_SEC_SEC IPFY_SEC_TS IPFY_SEC_RSV3 IPFY_DOI
 159
 160 %token  IPFY_V6HDRS IPFY_IPV6OPT IPFY_IPV6OPT_DSTOPTS IPFY_IPV6OPT_HOPOPTS
 161 %token  IPFY_IPV6OPT_IPV6 IPFY_IPV6OPT_NONE IPFY_IPV6OPT_ROUTING IPFY_V6HDR
 162 %token  IPFY_IPV6OPT_MOBILITY IPFY_IPV6OPT_ESP IPFY_IPV6OPT_FRAG
 163
 164 %token  IPFY_ICMPT_UNR IPFY_ICMPT_ECHO IPFY_ICMPT_ECHOR IPFY_ICMPT_SQUENCH
 165 %token  IPFY_ICMPT_REDIR IPFY_ICMPT_TIMEX IPFY_ICMPT_PARAMP IPFY_ICMPT_TIMEST
 166 %token  IPFY_ICMPT_TIMESTREP IPFY_ICMPT_INFOREQ IPFY_ICMPT_INFOREP
 167 %token  IPFY_ICMPT_MASKREQ IPFY_ICMPT_MASKREP IPFY_ICMPT_ROUTERAD
 168 %token  IPFY_ICMPT_ROUTERSOL
 169
 170 %token  IPFY_ICMPC_NETUNR IPFY_ICMPC_HSTUNR IPFY_ICMPC_PROUNR IPFY_ICMPC_PORUNR
 171 %token  IPFY_ICMPC_NEEDF IPFY_ICMPC_SRCFAIL IPFY_ICMPC_NETUNK IPFY_ICMPC_HSTUNK
 172 %token  IPFY_ICMPC_ISOLATE IPFY_ICMPC_NETPRO IPFY_ICMPC_HSTPRO
 173 %token  IPFY_ICMPC_NETTOS IPFY_ICMPC_HSTTOS IPFY_ICMPC_FLTPRO IPFY_ICMPC_HSTPRE
 174 %token  IPFY_ICMPC_CUTPRE
 175
 176 %token  IPFY_FAC_KERN IPFY_FAC_USER IPFY_FAC_MAIL IPFY_FAC_DAEMON IPFY_FAC_AUTH
 177 %token  IPFY_FAC_SYSLOG IPFY_FAC_LPR IPFY_FAC_NEWS IPFY_FAC_UUCP IPFY_FAC_CRON
 178 %token  IPFY_FAC_LOCAL0 IPFY_FAC_LOCAL1 IPFY_FAC_LOCAL2 IPFY_FAC_LOCAL3
 179 %token  IPFY_FAC_LOCAL4 IPFY_FAC_LOCAL5 IPFY_FAC_LOCAL6 IPFY_FAC_LOCAL7
 180 %token  IPFY_FAC_SECURITY IPFY_FAC_FTP IPFY_FAC_AUTHPRIV IPFY_FAC_AUDIT
 181 %token  IPFY_FAC_LFMT IPFY_FAC_CONSOLE
 182
 183 %token  IPFY_PRI_EMERG IPFY_PRI_ALERT IPFY_PRI_CRIT IPFY_PRI_ERR IPFY_PRI_WARN
 184 %token  IPFY_PRI_NOTICE IPFY_PRI_INFO IPFY_PRI_DEBUG
 185 %%
 186 file:   settings rules
 187         | rules
 188         ;
 189
 190 settings:
 191         YY_COMMENT
 192         | setting
 193         | settings setting
 194         ;
 195
 196 rules:  line
 197         | assign
 198         | rules line
 199         | rules assign
 200         ;
 201
 202 setting:
 203         IPFY_SET YY_STR YY_NUMBER ';'   { do_tuneint($2, $3); }
 204         | IPFY_SET YY_STR YY_HEX ';'    { do_tuneint($2, $3); }
 205         | IPFY_SET YY_STR YY_STR ';'    { do_tunestr($2, $3); }
 206         ;
 207
 208 line:   rule            { while ((fr = frtop) != NULL) {
 209                                 frtop = fr->fr_next;
 210                                 fr->fr_next = NULL;
 211                                 if ((fr->fr_type == FR_T_IPF) &&
 212                                     (fr->fr_ip.fi_v == 0))
 213                                         fr->fr_mip.fi_v = 0;
 214                                 /* XXX validate ? */
 215                                 (*ipfaddfunc)(ipffd, ipfioctls[IPL_LOGIPF], fr);
 216                                 fr->fr_next = frold;
 217                                 frold = fr;
 218                           }
 219                           resetlexer();
 220                         }
 221         | YY_COMMENT
 222         ;
 223
 224 xx:                                     { newrule(); }
 225         ;
 226
 227 assign: YY_STR assigning YY_STR ';'     { set_variable($1, $3);
 228                                           resetlexer();
 229                                           free($1);
 230                                           free($3);
 231                                           yyvarnext = 0;
 232                                         }
 233         ;
 234
 235 assigning:
 236         '='                             { yyvarnext = 1; }
 237         ;
 238
 239 rule:   inrule eol
 240         | outrule eol
 241         ;
 242
 243 eol:    | ';'
 244         ;
 245
 246 inrule:
 247         rulehead markin inopts rulemain ruletail intag ruletail2
 248         ;
 249
 250 outrule:
 251         rulehead markout outopts rulemain ruletail outtag ruletail2
 252         ;
 253
 254 rulehead:
 255         xx collection action
 256         | xx insert collection action
 257         ;
 258
 259 markin: IPFY_IN                         { fr->fr_flags |= FR_INQUE; }
 260         ;
 261
 262 markout:
 263         IPFY_OUT                        { fr->fr_flags |= FR_OUTQUE; }
 264         ;
 265
 266 rulemain:
 267         ipfrule
 268         | bpfrule
 269         | exprrule
 270         ;
 271
 272 ipfrule:
 273         family tos ttl proto ip
 274         ;
 275
 276 family: | IPFY_FAMILY IPFY_INET         { if (use_inet6 == 1) {
 277                                                 YYERROR;
 278                                           } else {
 279                                                 frc->fr_family = AF_INET;
 280                                           }
 281                                         }
 282         | IPFY_INET                     { if (use_inet6 == 1) {
 283                                                 YYERROR;
 284                                           } else {
 285                                                 frc->fr_family = AF_INET;
 286                                           }
 287                                         }
 288         | IPFY_FAMILY IPFY_INET6        { if (use_inet6 == -1) {
 289                                                 YYERROR;
 290                                           } else {
 291                                                 frc->fr_family = AF_INET6;
 292                                           }
 293                                         }
 294         | IPFY_INET6                    { if (use_inet6 == -1) {
 295                                                 YYERROR;
 296                                           } else {
 297                                                 frc->fr_family = AF_INET6;
 298                                           }
 299                                         }
 300         ;
 301
 302 bpfrule:
 303         IPFY_BPFV4 '{' YY_STR '}'       { dobpf(4, $3); free($3); }
 304         | IPFY_BPFV6 '{' YY_STR '}'     { dobpf(6, $3); free($3); }
 305         ;
 306
 307 exprrule:
 308         IPFY_IPFEXPR '{' YY_STR '}'     { doipfexpr($3); }
 309         ;
 310
 311 ruletail:
 312         with keep head group
 313         ;
 314
 315 ruletail2:
 316         pps age new rulettl comment
 317         ;
 318
 319 intag:  settagin matchtagin
 320         ;
 321
 322 outtag: settagout matchtagout
 323         ;
 324
 325 insert:
 326         '@' YY_NUMBER                   { fr->fr_hits = (U_QUAD_T)$2 + 1; }
 327         ;
 328
 329 collection:
 330         | YY_NUMBER                     { fr->fr_collect = $1; }
 331         ;
 332
 333 action: block
 334         | IPFY_PASS                     { fr->fr_flags |= FR_PASS; }
 335         | IPFY_NOMATCH                  { fr->fr_flags |= FR_NOMATCH; }
 336         | log
 337         | IPFY_COUNT                    { fr->fr_flags |= FR_ACCOUNT; }
 338         | decaps                        { fr->fr_flags |= FR_DECAPSULATE; }
 339         | auth
 340         | IPFY_SKIP YY_NUMBER           { fr->fr_flags |= FR_SKIP;
 341                                           fr->fr_arg = $2; }
 342         | IPFY_CALL func
 343         | IPFY_CALL IPFY_NOW func       { fr->fr_flags |= FR_CALLNOW; }
 344         ;
 345
 346 block:  blocked
 347         | blocked blockreturn
 348         ;
 349
 350 blocked:
 351         IPFY_BLOCK                      { fr->fr_flags = FR_BLOCK; }
 352         ;
 353 blockreturn:
 354         IPFY_RETICMP                    { fr->fr_flags |= FR_RETICMP; }
 355         | IPFY_RETICMP returncode       { fr->fr_flags |= FR_RETICMP; }
 356         | IPFY_RETICMPASDST             { fr->fr_flags |= FR_FAKEICMP; }
 357         | IPFY_RETICMPASDST returncode  { fr->fr_flags |= FR_FAKEICMP; }
 358         | IPFY_RETRST                   { fr->fr_flags |= FR_RETRST; }
 359         ;
 360
 361 decaps: IPFY_DECAPS
 362         | IPFY_DECAPS IPFY_L5AS '(' YY_STR ')'
 363                                         { fr->fr_icode = atoi($4); }
 364         ;
 365
 366 log:    IPFY_LOG                        { fr->fr_flags |= FR_LOG; }
 367         | IPFY_LOG logoptions           { fr->fr_flags |= FR_LOG; }
 368         ;
 369
 370 auth:   IPFY_AUTH                       { fr->fr_flags |= FR_AUTH; }
 371         | IPFY_AUTH blockreturn         { fr->fr_flags |= FR_AUTH;}
 372         | IPFY_PREAUTH                  { fr->fr_flags |= FR_PREAUTH; }
 373         ;
 374
 375 func:   YY_STR '/' YY_NUMBER
 376                         { fr->fr_func = nametokva($1, ipfioctls[IPL_LOGIPF]);
 377                           fr->fr_arg = $3;
 378                           free($1);
 379                         }
 380         ;
 381
 382 inopts:
 383         | inopts inopt
 384         ;
 385
 386 inopt:
 387         logopt
 388         | quick
 389         | on
 390         | dup
 391         | froute
 392         | proute
 393         | replyto
 394         ;
 395
 396 outopts:
 397         | outopts outopt
 398         ;
 399
 400 outopt:
 401         logopt
 402         | quick
 403         | on
 404         | dup
 405         | proute
 406         | froute
 407         | replyto
 408         ;
 409
 410 tos:    | settos YY_NUMBER      { DOALL(fr->fr_tos = $2; fr->fr_mtos = 0xff;) }
 411         | settos YY_HEX { DOALL(fr->fr_tos = $2; fr->fr_mtos = 0xff;) }
 412         | settos lstart toslist lend
 413         ;
 414
 415 settos: IPFY_TOS                        { setipftype(); }
 416         ;
 417
 418 toslist:
 419         YY_NUMBER       { DOALL(fr->fr_tos = $1; fr->fr_mtos = 0xff;) }
 420         | YY_HEX        { DOREM(fr->fr_tos = $1; fr->fr_mtos = 0xff;) }
 421         | toslist lmore YY_NUMBER
 422                         { DOREM(fr->fr_tos = $3; fr->fr_mtos = 0xff;) }
 423         | toslist lmore YY_HEX
 424                         { DOREM(fr->fr_tos = $3; fr->fr_mtos = 0xff;) }
 425         ;
 426
 427 ttl:    | setttl YY_NUMBER
 428                         { DOALL(fr->fr_ttl = $2; fr->fr_mttl = 0xff;) }
 429         | setttl lstart ttllist lend
 430         ;
 431
 432 lstart: '{'                             { newlist = 1; fr = frc; added = 0; }
 433         ;
 434
 435 lend:   '}'                             { nrules += added; }
 436         ;
 437
 438 lmore:  lanother                        { if (newlist == 1) {
 439                                                 newlist = 0;
 440                                           }
 441                                           fr = addrule();
 442                                           if (yycont != NULL)
 443                                                 *yycont = 1;
 444                                         }
 445         ;
 446
 447 lanother:
 448         | ','
 449         ;
 450
 451 setttl: IPFY_TTL                        { setipftype(); }
 452         ;
 453
 454 ttllist:
 455         YY_NUMBER       { DOREM(fr->fr_ttl = $1; fr->fr_mttl = 0xff;) }
 456         | ttllist lmore YY_NUMBER
 457                         { DOREM(fr->fr_ttl = $3; fr->fr_mttl = 0xff;) }
 458         ;
 459
 460 proto:  | protox protocol               { yyresetdict(); }
 461         ;
 462
 463 protox: IPFY_PROTO                      { setipftype();
 464                                           fr = frc;
 465                                           yysetdict(NULL); }
 466         ;
 467
 468 ip:     srcdst flags icmp
 469         ;
 470
 471 group:  | IPFY_GROUP groupname          { DOALL(setgroup(&fr, $2); \
 472                                                 fillgroup(fr););
 473                                           free($2);
 474                                         }
 475         ;
 476
 477 head:   | IPFY_HEAD groupname           { DOALL(setgrhead(&fr, $2););
 478                                           free($2);
 479                                         }
 480         ;
 481
 482 groupname:
 483         YY_STR                          { $$ = $1;
 484                                           if (strlen($$) >= FR_GROUPLEN)
 485                                                 $$[FR_GROUPLEN - 1] = '\0';
 486                                         }
 487         | YY_NUMBER                     { $$ = malloc(16);
 488                                           sprintf($$, "%d", $1);
 489                                         }
 490         ;
 491
 492 settagin:
 493         | IPFY_SETTAG '(' taginlist ')'
 494         ;
 495
 496 taginlist:
 497         taginspec
 498         | taginlist ',' taginspec
 499         ;
 500
 501 taginspec:
 502         logtag
 503         ;
 504
 505 nattag: IPFY_NAT '=' YY_STR             { DOALL(strncpy(fr->fr_nattag.ipt_tag,\
 506                                                 $3, IPFTAG_LEN););
 507                                           free($3); }
 508         | IPFY_NAT '=' YY_NUMBER        { DOALL(sprintf(fr->fr_nattag.ipt_tag,\
 509                                                 "%d", $3 & 0xffffffff);) }
 510         ;
 511
 512 logtag: IPFY_LOG '=' YY_NUMBER          { DOALL(fr->fr_logtag = $3;) }
 513         ;
 514
 515 settagout:
 516         | IPFY_SETTAG '(' tagoutlist ')'
 517         ;
 518
 519 tagoutlist:
 520         tagoutspec
 521         | tagoutlist ',' tagoutspec
 522         ;
 523
 524 tagoutspec:
 525         logtag
 526         | nattag
 527         ;
 528
 529 matchtagin:
 530         | IPFY_MATCHTAG '(' tagoutlist ')'
 531         ;
 532
 533 matchtagout:
 534         | IPFY_MATCHTAG '(' taginlist ')'
 535         ;
 536
 537 pps:    | IPFY_PPS YY_NUMBER            { DOALL(fr->fr_pps = $2;) }
 538         ;
 539
 540 new:    | savegroup file restoregroup
 541         ;
 542
 543 rulettl:
 544         | IPFY_RULETTL YY_NUMBER        { DOALL(fr->fr_die = $2;) }
 545         ;
 546
 547 comment:
 548         | IPFY_COMMENT YY_STR           { DOALL(fr->fr_comment = addname(&fr, \
 549                                                 $2);) }
 550         ;
 551
 552 savegroup:
 553         '{'
 554         ;
 555
 556 restoregroup:
 557         '}'
 558         ;
 559
 560 logopt: log
 561         ;
 562
 563 quick:  IPFY_QUICK                              { fr->fr_flags |= FR_QUICK; }
 564         ;
 565
 566 on:     IPFY_ON onname                          { setifname(&fr, 0, $2.if1);
 567                                                   free($2.if1);
 568                                                   if ($2.if2 != NULL) {
 569                                                         setifname(&fr, 1,
 570                                                                   $2.if2);
 571                                                         free($2.if2);
 572                                                   }
 573                                                 }
 574         | IPFY_ON lstart onlist lend
 575         | IPFY_ON onname IPFY_INVIA vianame     { setifname(&fr, 0, $2.if1);
 576                                                   free($2.if1);
 577                                                   if ($2.if2 != NULL) {
 578                                                         setifname(&fr, 1,
 579                                                                   $2.if2);
 580                                                         free($2.if2);
 581                                                   }
 582                                                 }
 583         | IPFY_ON onname IPFY_OUTVIA vianame    { setifname(&fr, 0, $2.if1);
 584                                                   free($2.if1);
 585                                                   if ($2.if2 != NULL) {
 586                                                         setifname(&fr, 1,
 587                                                                   $2.if2);
 588                                                         free($2.if2);
 589                                                   }
 590                                                 }
 591         ;
 592
 593 onlist: onname                  { DOREM(setifname(&fr, 0, $1.if1);         \
 594                                         if ($1.if2 != NULL)                \
 595                                                 setifname(&fr, 1, $1.if2); \
 596                                         )
 597                                   free($1.if1);
 598                                   if ($1.if2 != NULL)
 599                                         free($1.if2);
 600                                 }
 601         | onlist lmore onname   { DOREM(setifname(&fr, 0, $3.if1);         \
 602                                         if ($3.if2 != NULL)                \
 603                                                 setifname(&fr, 1, $3.if2); \
 604                                         )
 605                                   free($3.if1);
 606                                   if ($3.if2 != NULL)
 607                                         free($3.if2);
 608                                 }
 609         ;
 610
 611 onname: interfacename           { $$.if1 = $1;
 612                                   $$.if2 = NULL;
 613                                 }
 614         | interfacename ',' interfacename
 615                                 { $$.if1 = $1;
 616                                   $$.if2 = $3;
 617                                 }
 618         ;
 619
 620 vianame:
 621         name                    { setifname(&fr, 2, $1);
 622                                   free($1);
 623                                 }
 624         | name ',' name         { setifname(&fr, 2, $1);
 625                                   free($1);
 626                                   setifname(&fr, 3, $3);
 627                                   free($3);
 628                                 }
 629         ;
 630
 631 dup:    IPFY_DUPTO name
 632         { int idx = addname(&fr, $2);
 633           fr->fr_dif.fd_name = idx;
 634           free($2);
 635         }
 636         | IPFY_DUPTO IPFY_DSTLIST '/' name
 637         { int idx = addname(&fr, $4);
 638           fr->fr_dif.fd_name = idx;
 639           fr->fr_dif.fd_type = FRD_DSTLIST;
 640           free($4);
 641         }
 642         | IPFY_DUPTO name duptoseparator hostname
 643         { int idx = addname(&fr, $2);
 644           fr->fr_dif.fd_name = idx;
 645           fr->fr_dif.fd_ptr = (void *)-1;
 646           fr->fr_dif.fd_ip6 = $4.adr;
 647           if (fr->fr_family == AF_UNSPEC && $4.f != AF_UNSPEC)
 648                 fr->fr_family = $4.f;
 649           yyexpectaddr = 0;
 650           free($2);
 651         }
 652         ;
 653
 654 duptoseparator:
 655         ':'     { yyexpectaddr = 1; yycont = &yyexpectaddr; resetaddr(); }
 656         ;
 657
 658 froute: IPFY_FROUTE                     { fr->fr_flags |= FR_FASTROUTE; }
 659         ;
 660
 661 proute: routeto name
 662         { int idx = addname(&fr, $2);
 663           fr->fr_tif.fd_name = idx;
 664           free($2);
 665         }
 666         | routeto IPFY_DSTLIST '/' name
 667         { int idx = addname(&fr, $4);
 668           fr->fr_tif.fd_name = idx;
 669           fr->fr_tif.fd_type = FRD_DSTLIST;
 670           free($4);
 671         }
 672         | routeto name duptoseparator hostname
 673         { int idx = addname(&fr, $2);
 674           fr->fr_tif.fd_name = idx;
 675           fr->fr_tif.fd_ptr = (void *)-1;
 676           fr->fr_tif.fd_ip6 = $4.adr;
 677           if (fr->fr_family == AF_UNSPEC && $4.f != AF_UNSPEC)
 678                 fr->fr_family = $4.f;
 679           yyexpectaddr = 0;
 680           free($2);
 681         }
 682         ;
 683
 684 routeto:
 685         IPFY_TO
 686         | IPFY_ROUTETO
 687         ;
 688
 689 replyto:
 690         IPFY_REPLY_TO name
 691         { int idx = addname(&fr, $2);
 692           fr->fr_rif.fd_name = idx;
 693           free($2);
 694         }
 695         | IPFY_REPLY_TO IPFY_DSTLIST '/' name
 696         { fr->fr_rif.fd_name = addname(&fr, $4);
 697           fr->fr_rif.fd_type = FRD_DSTLIST;
 698           free($4);
 699         }
 700         | IPFY_REPLY_TO name duptoseparator hostname
 701         { int idx = addname(&fr, $2);
 702           fr->fr_rif.fd_name = idx;
 703           fr->fr_rif.fd_ptr = (void *)-1;
 704           fr->fr_rif.fd_ip6 = $4.adr;
 705           if (fr->fr_family == AF_UNSPEC && $4.f != AF_UNSPEC)
 706                 fr->fr_family = $4.f;
 707           free($2);
 708         }
 709         ;
 710
 711 logoptions:
 712         logoption
 713         | logoptions logoption
 714         ;
 715
 716 logoption:
 717         IPFY_BODY                       { fr->fr_flags |= FR_LOGBODY; }
 718         | IPFY_FIRST                    { fr->fr_flags |= FR_LOGFIRST; }
 719         | IPFY_ORBLOCK                  { fr->fr_flags |= FR_LOGORBLOCK; }
 720         | level loglevel                { unsetsyslog(); }
 721         ;
 722
 723 returncode:
 724         starticmpcode icmpcode ')'      { fr->fr_icode = $2; yyresetdict(); }
 725         ;
 726
 727 starticmpcode:
 728         '('                             { yysetdict(icmpcodewords); }
 729         ;
 730
 731 srcdst: | IPFY_ALL
 732         | fromto
 733         ;
 734
 735 protocol:
 736         YY_NUMBER               { DOALL(fr->fr_proto = $1; \
 737                                         fr->fr_mproto = 0xff;)
 738                                 }
 739         | YY_STR                { if (!strcmp($1, "tcp-udp")) {
 740                                         DOALL(fr->fr_flx |= FI_TCPUDP; \
 741                                               fr->fr_mflx |= FI_TCPUDP;)
 742                                   } else {
 743                                         int p = getproto($1);
 744                                         if (p == -1)
 745                                                 yyerror("protocol unknown");
 746                                         DOALL(fr->fr_proto = p; \
 747                                                 fr->fr_mproto = 0xff;)
 748                                   }
 749                                   free($1);
 750                                 }
 751         | YY_STR nextstring YY_STR
 752                                 { if (!strcmp($1, "tcp") &&
 753                                       !strcmp($3, "udp")) {
 754                                         DOREM(fr->fr_flx |= FI_TCPUDP; \
 755                                               fr->fr_mflx |= FI_TCPUDP;)
 756                                   } else {
 757                                         YYERROR;
 758                                   }
 759                                   free($1);
 760                                   free($3);
 761                                 }
 762         ;
 763
 764 nextstring:
 765         '/'                     { yysetdict(NULL); }
 766         ;
 767
 768 fromto: from srcobject to dstobject     { yyexpectaddr = 0; yycont = NULL; }
 769         | to dstobject                  { yyexpectaddr = 0; yycont = NULL; }
 770         | from srcobject                { yyexpectaddr = 0; yycont = NULL; }
 771         ;
 772
 773 from:   IPFY_FROM                       { setipftype();
 774                                           if (fr == NULL)
 775                                                 fr = frc;
 776                                           yyexpectaddr = 1;
 777                                           if (yydebug)
 778                                                 printf("set yyexpectaddr\n");
 779                                           yycont = &yyexpectaddr;
 780                                           yysetdict(addrwords);
 781                                           resetaddr(); }
 782         ;
 783
 784 to:     IPFY_TO                         { if (fr == NULL)
 785                                                 fr = frc;
 786                                           yyexpectaddr = 1;
 787                                           if (yydebug)
 788                                                 printf("set yyexpectaddr\n");
 789                                           yycont = &yyexpectaddr;
 790                                           yysetdict(addrwords);
 791                                           resetaddr();
 792                                         }
 793         ;
 794
 795 with:   | andwith withlist
 796         ;
 797
 798 andwith:
 799         IPFY_WITH                       { nowith = 0; setipftype(); }
 800         | IPFY_AND                      { nowith = 0; setipftype(); }
 801         ;
 802
 803 flags:  | startflags flagset
 804                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = FR_TCPFMAX;) }
 805         | startflags flagset '/' flagset
 806                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) }
 807         | startflags '/' flagset
 808                 { DOALL(fr->fr_tcpf = 0; fr->fr_tcpfm = $3;) }
 809         | startflags YY_NUMBER
 810                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = FR_TCPFMAX;) }
 811         | startflags '/' YY_NUMBER
 812                 { DOALL(fr->fr_tcpf = 0; fr->fr_tcpfm = $3;) }
 813         | startflags YY_NUMBER '/' YY_NUMBER
 814                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) }
 815         | startflags flagset '/' YY_NUMBER
 816                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) }
 817         | startflags YY_NUMBER '/' flagset
 818                 { DOALL(fr->fr_tcpf = $2; fr->fr_tcpfm = $4;) }
 819         ;
 820
 821 startflags:
 822         IPFY_FLAGS      { if (frc->fr_type != FR_T_IPF)
 823                                 yyerror("flags with non-ipf type rule");
 824                           if (frc->fr_proto != IPPROTO_TCP)
 825                                 yyerror("flags with non-TCP rule");
 826                         }
 827         ;
 828
 829 flagset:
 830         YY_STR                          { $$ = tcpflags($1); free($1); }
 831         | YY_HEX                        { $$ = $1; }
 832         ;
 833
 834 srcobject:
 835         { yyresetdict(); } fromport
 836         | srcaddr srcport
 837         | '!' srcaddr srcport
 838                 { DOALL(fr->fr_flags |= FR_NOTSRCIP;) }
 839         ;
 840
 841 srcaddr:
 842         addr    { build_srcaddr_af(fr, &$1); }
 843         | lstart srcaddrlist lend
 844         ;
 845
 846 srcaddrlist:
 847         addr    { build_srcaddr_af(fr, &$1); }
 848         | srcaddrlist lmore addr
 849                 { build_srcaddr_af(fr, &$3); }
 850         ;
 851
 852 srcport:
 853         | portcomp
 854                 { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1;) }
 855         | portrange
 856                 { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1; \
 857                         fr->fr_stop = $1.p2;) }
 858         | porteq lstart srcportlist lend
 859                 { yyresetdict(); }
 860         ;
 861
 862 fromport:
 863         portcomp
 864                 { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1;) }
 865         | portrange
 866                 { DOALL(fr->fr_scmp = $1.pc; fr->fr_sport = $1.p1; \
 867                         fr->fr_stop = $1.p2;) }
 868         | porteq lstart srcportlist lend
 869                 { yyresetdict(); }
 870         ;
 871
 872 srcportlist:
 873         portnum         { DOREM(fr->fr_scmp = FR_EQUAL; fr->fr_sport = $1;) }
 874         | portnum ':' portnum
 875                         { DOREM(fr->fr_scmp = FR_INCRANGE; fr->fr_sport = $1; \
 876                                 fr->fr_stop = $3;) }
 877         | portnum YY_RANGE_IN portnum
 878                         { DOREM(fr->fr_scmp = FR_INRANGE; fr->fr_sport = $1; \
 879                                 fr->fr_stop = $3;) }
 880         | srcportlist lmore portnum
 881                         { DOREM(fr->fr_scmp = FR_EQUAL; fr->fr_sport = $3;) }
 882         | srcportlist lmore portnum ':' portnum
 883                         { DOREM(fr->fr_scmp = FR_INCRANGE; fr->fr_sport = $3; \
 884                                 fr->fr_stop = $5;) }
 885         | srcportlist lmore portnum YY_RANGE_IN portnum
 886                         { DOREM(fr->fr_scmp = FR_INRANGE; fr->fr_sport = $3; \
 887                                 fr->fr_stop = $5;) }
 888         ;
 889
 890 dstobject:
 891         { yyresetdict(); } toport
 892         | dstaddr dstport
 893         | '!' dstaddr dstport
 894                         { DOALL(fr->fr_flags |= FR_NOTDSTIP;) }
 895         ;
 896
 897 dstaddr:
 898         addr    { if (($1.f != AF_UNSPEC) && (frc->fr_family != AF_UNSPEC) &&
 899                       ($1.f != frc->fr_family))
 900                         yyerror("1.src/dst address family mismatch");
 901                   build_dstaddr_af(fr, &$1);
 902                 }
 903         | lstart dstaddrlist lend
 904         ;
 905
 906 dstaddrlist:
 907         addr    { if (($1.f != AF_UNSPEC) && (frc->fr_family != AF_UNSPEC) &&
 908                       ($1.f != frc->fr_family))
 909                         yyerror("2.src/dst address family mismatch");
 910                   build_dstaddr_af(fr, &$1);
 911                 }
 912         | dstaddrlist lmore addr
 913                 { if (($3.f != AF_UNSPEC) && (frc->fr_family != AF_UNSPEC) &&
 914                       ($3.f != frc->fr_family))
 915                         yyerror("3.src/dst address family mismatch");
 916                   build_dstaddr_af(fr, &$3);
 917                 }
 918         ;
 919
 920
 921 dstport:
 922         | portcomp
 923                 { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1;) }
 924         | portrange
 925                 { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1; \
 926                         fr->fr_dtop = $1.p2;) }
 927         | porteq lstart dstportlist lend
 928                 { yyresetdict(); }
 929         ;
 930
 931 toport:
 932         portcomp
 933                 { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1;) }
 934         | portrange
 935                 { DOALL(fr->fr_dcmp = $1.pc; fr->fr_dport = $1.p1; \
 936                         fr->fr_dtop = $1.p2;) }
 937         | porteq lstart dstportlist lend
 938                 { yyresetdict(); }
 939         ;
 940
 941 dstportlist:
 942         portnum         { DOREM(fr->fr_dcmp = FR_EQUAL; fr->fr_dport = $1;) }
 943         | portnum ':' portnum
 944                         { DOREM(fr->fr_dcmp = FR_INCRANGE; fr->fr_dport = $1; \
 945                                 fr->fr_dtop = $3;) }
 946         | portnum YY_RANGE_IN portnum
 947                         { DOREM(fr->fr_dcmp = FR_INRANGE; fr->fr_dport = $1; \
 948                                 fr->fr_dtop = $3;) }
 949         | dstportlist lmore portnum
 950                         { DOREM(fr->fr_dcmp = FR_EQUAL; fr->fr_dport = $3;) }
 951         | dstportlist lmore portnum ':' portnum
 952                         { DOREM(fr->fr_dcmp = FR_INCRANGE; fr->fr_dport = $3; \
 953                                 fr->fr_dtop = $5;) }
 954         | dstportlist lmore portnum YY_RANGE_IN portnum
 955                         { DOREM(fr->fr_dcmp = FR_INRANGE; fr->fr_dport = $3; \
 956                                 fr->fr_dtop = $5;) }
 957         ;
 958
 959 addr:   pool '/' YY_NUMBER              { pooled = 1;
 960                                           yyexpectaddr = 0;
 961                                           $$.type = FRI_LOOKUP;
 962                                           $$.v = 0;
 963                                           $$.ifpos = -1;
 964                                           $$.f = AF_UNSPEC;
 965                                           $$.a.iplookuptype = IPLT_POOL;
 966                                           $$.a.iplookupsubtype = 0;
 967                                           $$.a.iplookupnum = $3; }
 968         | pool '/' YY_STR               { pooled = 1;
 969                                           $$.ifpos = -1;
 970                                           $$.f = AF_UNSPEC;
 971                                           $$.type = FRI_LOOKUP;
 972                                           $$.a.iplookuptype = IPLT_POOL;
 973                                           $$.a.iplookupsubtype = 1;
 974                                           $$.a.iplookupname = addname(&fr, $3);
 975                                         }
 976         | pool '=' '('                  { yyexpectaddr = 1;
 977                                           pooled = 1;
 978                                         }
 979                         poollist ')'    { yyexpectaddr = 0;
 980                                           $$.v = 0;
 981                                           $$.ifpos = -1;
 982                                           $$.f = AF_UNSPEC;
 983                                           $$.type = FRI_LOOKUP;
 984                                           $$.a.iplookuptype = IPLT_POOL;
 985                                           $$.a.iplookupsubtype = 0;
 986                                           $$.a.iplookupnum = makepool($5);
 987                                         }
 988         | hash '/' YY_NUMBER            { hashed = 1;
 989                                           yyexpectaddr = 0;
 990                                           $$.v = 0;
 991                                           $$.ifpos = -1;
 992                                           $$.f = AF_UNSPEC;
 993                                           $$.type = FRI_LOOKUP;
 994                                           $$.a.iplookuptype = IPLT_HASH;
 995                                           $$.a.iplookupsubtype = 0;
 996                                           $$.a.iplookupnum = $3;
 997                                         }
 998         | hash '/' YY_STR               { hashed = 1;
 999                                           $$.type = FRI_LOOKUP;
1000                                           $$.v = 0;
1001                                           $$.ifpos = -1;
1002                                           $$.f = AF_UNSPEC;
1003                                           $$.a.iplookuptype = IPLT_HASH;
1004                                           $$.a.iplookupsubtype = 1;
1005                                           $$.a.iplookupname = addname(&fr, $3);
1006                                         }
1007         | hash '=' '('                  { hashed = 1;
1008                                           yyexpectaddr = 1;
1009                                         }
1010                         addrlist ')'    { yyexpectaddr = 0;
1011                                           $$.v = 0;
1012                                           $$.ifpos = -1;
1013                                           $$.f = AF_UNSPEC;
1014                                           $$.type = FRI_LOOKUP;
1015                                           $$.a.iplookuptype = IPLT_HASH;
1016                                           $$.a.iplookupsubtype = 0;
1017                                           $$.a.iplookupnum = makehash($5);
1018                                         }
1019         | ipaddr                        { $$ = $1;
1020                                           yyexpectaddr = 0; }
1021         ;
1022
1023 ipaddr: IPFY_ANY                        { memset(&($$), 0, sizeof($$));
1024                                           $$.type = FRI_NORMAL;
1025                                           $$.ifpos = -1;
1026                                           yyexpectaddr = 0;
1027                                         }
1028         | hostname                      { memset(&($$), 0, sizeof($$));
1029                                           $$.a = $1.adr;
1030                                           $$.f = $1.f;
1031                                           if ($1.f == AF_INET6)
1032                                                   fill6bits(128, $$.m.i6);
1033                                           else if ($1.f == AF_INET)
1034                                                   fill6bits(32, $$.m.i6);
1035                                           $$.v = ftov($1.f);
1036                                           $$.ifpos = dynamic;
1037                                           $$.type = FRI_NORMAL;
1038                                         }
1039         | hostname                      { yyresetdict(); }
1040                 maskspace               { yysetdict(maskwords);
1041                                           yyexpectaddr = 2; }
1042                 ipmask                  { memset(&($$), 0, sizeof($$));
1043                                           ntomask($1.f, $5, $$.m.i6);
1044                                           $$.a = $1.adr;
1045                                           $$.a.i6[0] &= $$.m.i6[0];
1046                                           $$.a.i6[1] &= $$.m.i6[1];
1047                                           $$.a.i6[2] &= $$.m.i6[2];
1048                                           $$.a.i6[3] &= $$.m.i6[3];
1049                                           $$.f = $1.f;
1050                                           $$.v = ftov($1.f);
1051                                           $$.type = ifpflag;
1052                                           $$.ifpos = dynamic;
1053                                           if (ifpflag != 0 && $$.v == 0) {
1054                                                 if (frc->fr_family == AF_INET6){
1055                                                         $$.v = 6;
1056                                                         $$.f = AF_INET6;
1057                                                 } else {
1058                                                         $$.v = 4;
1059                                                         $$.f = AF_INET;
1060                                                 }
1061                                           }
1062                                           yyresetdict();
1063                                           yyexpectaddr = 0;
1064                                         }
1065         | '(' YY_STR ')'                { memset(&($$), 0, sizeof($$));
1066                                           $$.type = FRI_DYNAMIC;
1067                                           ifpflag = FRI_DYNAMIC;
1068                                           $$.ifpos = addname(&fr, $2);
1069                                           $$.lif = 0;
1070                                         }
1071         | '(' YY_STR ')' '/'
1072           { ifpflag = FRI_DYNAMIC; yysetdict(maskwords); }
1073           maskopts
1074                                         { memset(&($$), 0, sizeof($$));
1075                                           $$.type = ifpflag;
1076                                           $$.ifpos = addname(&fr, $2);
1077                                           $$.lif = 0;
1078                                           if (frc->fr_family == AF_UNSPEC)
1079                                                 frc->fr_family = AF_INET;
1080                                           if (ifpflag == FRI_DYNAMIC) {
1081                                                 ntomask(frc->fr_family,
1082                                                         $6, $$.m.i6);
1083                                           }
1084                                           yyresetdict();
1085                                           yyexpectaddr = 0;
1086                                         }
1087         | '(' YY_STR ':' YY_NUMBER ')' '/'
1088           { ifpflag = FRI_DYNAMIC; yysetdict(maskwords); }
1089           maskopts
1090                                         { memset(&($$), 0, sizeof($$));
1091                                           $$.type = ifpflag;
1092                                           $$.ifpos = addname(&fr, $2);
1093                                           $$.lif = $4;
1094                                           if (frc->fr_family == AF_UNSPEC)
1095                                                 frc->fr_family = AF_INET;
1096                                           if (ifpflag == FRI_DYNAMIC) {
1097                                                 ntomask(frc->fr_family,
1098                                                         $8, $$.m.i6);
1099                                           }
1100                                           yyresetdict();
1101                                           yyexpectaddr = 0;
1102                                         }
1103         ;
1104
1105 maskspace:
1106         '/'
1107         | IPFY_MASK
1108         ;
1109
1110 ipmask: ipv4                            { $$ = count4bits($1.s_addr); }
1111         | YY_HEX                        { $$ = count4bits(htonl($1)); }
1112         | YY_NUMBER                     { $$ = $1; }
1113         | YY_IPV6                       { $$ = count6bits($1.i6); }
1114         | maskopts                      { $$ = $1; }
1115         ;
1116
1117 maskopts:
1118         IPFY_BROADCAST                  { if (ifpflag == FRI_DYNAMIC) {
1119                                                 ifpflag = FRI_BROADCAST;
1120                                           } else {
1121                                                 YYERROR;
1122                                           }
1123                                           $$ = 0;
1124                                         }
1125         | IPFY_NETWORK                  { if (ifpflag == FRI_DYNAMIC) {
1126                                                 ifpflag = FRI_NETWORK;
1127                                           } else {
1128                                                 YYERROR;
1129                                           }
1130                                           $$ = 0;
1131                                         }
1132         | IPFY_NETMASKED                { if (ifpflag == FRI_DYNAMIC) {
1133                                                 ifpflag = FRI_NETMASKED;
1134                                           } else {
1135                                                 YYERROR;
1136                                           }
1137                                           $$ = 0;
1138                                         }
1139         | IPFY_PEER                     { if (ifpflag == FRI_DYNAMIC) {
1140                                                 ifpflag = FRI_PEERADDR;
1141                                           } else {
1142                                                 YYERROR;
1143                                           }
1144                                           $$ = 0;
1145                                         }
1146         | YY_NUMBER                     { $$ = $1; }
1147         ;
1148
1149 hostname:
1150         ipv4                            { memset(&($$), 0, sizeof($$));
1151                                           $$.adr.in4 = $1;
1152                                           if (frc->fr_family == AF_INET6)
1153                                                 YYERROR;
1154                                           $$.f = AF_INET;
1155                                           yyexpectaddr = 2;
1156                                         }
1157         | YY_NUMBER                     { memset(&($$), 0, sizeof($$));
1158                                           if (frc->fr_family == AF_INET6)
1159                                                 YYERROR;
1160                                           $$.adr.in4_addr = $1;
1161                                           $$.f = AF_INET;
1162                                           yyexpectaddr = 2;
1163                                         }
1164         | YY_HEX                        { memset(&($$), 0, sizeof($$));
1165                                           if (frc->fr_family == AF_INET6)
1166                                                 YYERROR;
1167                                           $$.adr.in4_addr = $1;
1168                                           $$.f = AF_INET;
1169                                           yyexpectaddr = 2;
1170                                         }
1171         | YY_STR                        { memset(&($$), 0, sizeof($$));
1172                                           if (lookuphost($1, &$$.adr) == 0)
1173                                                   $$.f = AF_INET;
1174                                           free($1);
1175                                           yyexpectaddr = 2;
1176                                         }
1177         | YY_IPV6                       { memset(&($$), 0, sizeof($$));
1178                                           if (frc->fr_family == AF_INET)
1179                                                 YYERROR;
1180                                           $$.adr = $1;
1181                                           $$.f = AF_INET6;
1182                                           yyexpectaddr = 2;
1183                                         }
1184         ;
1185
1186 addrlist:
1187         ipaddr          { $$ = newalist(NULL);
1188                           $$->al_family = $1.f;
1189                           $$->al_i6addr = $1.a;
1190                           $$->al_i6mask = $1.m;
1191                         }
1192         | ipaddr ',' { yyexpectaddr = 1; } addrlist
1193                         { $$ = newalist($4);
1194                           $$->al_family = $1.f;
1195                           $$->al_i6addr = $1.a;
1196                           $$->al_i6mask = $1.m;
1197                         }
1198         ;
1199
1200 pool:   IPFY_POOL       { yyexpectaddr = 0; yycont = NULL; yyresetdict(); }
1201         ;
1202
1203 hash:   IPFY_HASH       { yyexpectaddr = 0; yycont = NULL; yyresetdict(); }
1204         ;
1205
1206 poollist:
1207         ipaddr          { $$ = newalist(NULL);
1208                           $$->al_family = $1.f;
1209                           $$->al_i6addr = $1.a;
1210                           $$->al_i6mask = $1.m;
1211                         }
1212         | '!' ipaddr    { $$ = newalist(NULL);
1213                           $$->al_not = 1;
1214                           $$->al_family = $2.f;
1215                           $$->al_i6addr = $2.a;
1216                           $$->al_i6mask = $2.m;
1217                         }
1218         | poollist ',' ipaddr
1219                         { $$ = newalist($1);
1220                           $$->al_family = $3.f;
1221                           $$->al_i6addr = $3.a;
1222                           $$->al_i6mask = $3.m;
1223                         }
1224         | poollist ',' '!' ipaddr
1225                         { $$ = newalist($1);
1226                           $$->al_not = 1;
1227                           $$->al_family = $4.f;
1228                           $$->al_i6addr = $4.a;
1229                           $$->al_i6mask = $4.m;
1230                         }
1231         ;
1232
1233 port:   IPFY_PORT                       { yyexpectaddr = 0;
1234                                           yycont = NULL;
1235                                           if (frc->fr_proto != 0 &&
1236                                               frc->fr_proto != IPPROTO_UDP &&
1237                                               frc->fr_proto != IPPROTO_TCP)
1238                                                 yyerror("port use incorrect");
1239                                         }
1240         ;
1241
1242 portc:  port compare                    { $$ = $2;
1243                                           yysetdict(NULL);
1244                                         }
1245         | porteq                        { $$ = $1; }
1246         ;
1247
1248 porteq: port '='                        { $$ = FR_EQUAL;
1249                                           yysetdict(NULL);
1250                                         }
1251         ;
1252
1253 portr:  IPFY_PORT                       { yyexpectaddr = 0;
1254                                           yycont = NULL;
1255                                           yysetdict(NULL);
1256                                         }
1257         ;
1258
1259 portcomp:
1260         portc portnum                   { $$.pc = $1;
1261                                           $$.p1 = $2;
1262                                           yyresetdict();
1263                                         }
1264         ;
1265
1266 portrange:
1267         portr portnum range portnum     { $$.p1 = $2;
1268                                           $$.pc = $3;
1269                                           $$.p2 = $4;
1270                                           yyresetdict();
1271                                         }
1272         ;
1273
1274 icmp:   | itype icode
1275         ;
1276
1277 itype:  seticmptype icmptype
1278         { DOALL(fr->fr_icmp = htons($2 << 8); fr->fr_icmpm = htons(0xff00););
1279           yyresetdict();
1280         }
1281         | seticmptype lstart typelist lend      { yyresetdict(); }
1282         ;
1283
1284 seticmptype:
1285         IPFY_ICMPTYPE           { if (frc->fr_family == AF_UNSPEC)
1286                                         frc->fr_family = AF_INET;
1287                                   if (frc->fr_family == AF_INET &&
1288                                       frc->fr_type == FR_T_IPF &&
1289                                       frc->fr_proto != IPPROTO_ICMP) {
1290                                         yyerror("proto not icmp");
1291                                   }
1292                                   if (frc->fr_family == AF_INET6 &&
1293                                       frc->fr_type == FR_T_IPF &&
1294                                       frc->fr_proto != IPPROTO_ICMPV6) {
1295                                         yyerror("proto not ipv6-icmp");
1296                                   }
1297                                   setipftype();
1298                                   DOALL(if (fr->fr_family == AF_INET) { \
1299                                                 fr->fr_ip.fi_v = 4; \
1300                                                 fr->fr_mip.fi_v = 0xf; \
1301                                         }
1302                                         if (fr->fr_family == AF_INET6) { \
1303                                                 fr->fr_ip.fi_v = 6; \
1304                                                 fr->fr_mip.fi_v = 0xf; \
1305                                         }
1306                                   )
1307                                   yysetdict(NULL);
1308                                 }
1309         ;
1310
1311 icode:  | seticmpcode icmpcode
1312         { DOALL(fr->fr_icmp |= htons($2); fr->fr_icmpm |= htons(0xff););
1313           yyresetdict();
1314         }
1315         | seticmpcode lstart codelist lend      { yyresetdict(); }
1316         ;
1317
1318 seticmpcode:
1319         IPFY_ICMPCODE                           { yysetdict(icmpcodewords); }
1320         ;
1321
1322 typelist:
1323         icmptype
1324         { DOREM(fr->fr_icmp = htons($1 << 8); fr->fr_icmpm = htons(0xff00);) }
1325         | typelist lmore icmptype
1326         { DOREM(fr->fr_icmp = htons($3 << 8); fr->fr_icmpm = htons(0xff00);) }
1327         ;
1328
1329 codelist:
1330         icmpcode
1331         { DOREM(fr->fr_icmp |= htons($1); fr->fr_icmpm |= htons(0xff);) }
1332         | codelist lmore icmpcode
1333         { DOREM(fr->fr_icmp &= htons(0xff00); fr->fr_icmp |= htons($3); \
1334                 fr->fr_icmpm |= htons(0xff);) }
1335         ;
1336
1337 age:    | IPFY_AGE YY_NUMBER            { DOALL(fr->fr_age[0] = $2; \
1338                                                 fr->fr_age[1] = $2;) }
1339         | IPFY_AGE YY_NUMBER '/' YY_NUMBER
1340                                         { DOALL(fr->fr_age[0] = $2; \
1341                                                 fr->fr_age[1] = $4;) }
1342         ;
1343
1344 keep:   | IPFY_KEEP keepstate keep
1345         | IPFY_KEEP keepfrag keep
1346         ;
1347
1348 keepstate:
1349         IPFY_STATE stateoptlist         { DOALL(fr->fr_flags |= FR_KEEPSTATE;)}
1350         ;
1351
1352 keepfrag:
1353         IPFY_FRAGS fragoptlist          { DOALL(fr->fr_flags |= FR_KEEPFRAG;) }
1354         | IPFY_FRAG fragoptlist         { DOALL(fr->fr_flags |= FR_KEEPFRAG;) }
1355         ;
1356
1357 fragoptlist:
1358         | '(' fragopts ')'
1359         ;
1360
1361 fragopts:
1362         fragopt lanother fragopts
1363         | fragopt
1364         ;
1365
1366 fragopt:
1367         IPFY_STRICT                     { DOALL(fr->fr_flags |= FR_FRSTRICT;) }
1368         ;
1369
1370 stateoptlist:
1371         | '(' stateopts ')'
1372         ;
1373
1374 stateopts:
1375         stateopt lanother stateopts
1376         | stateopt
1377         ;
1378
1379 stateopt:
1380         IPFY_LIMIT YY_NUMBER    { DOALL(fr->fr_statemax = $2;) }
1381         | IPFY_STRICT           { DOALL(if (fr->fr_proto != IPPROTO_TCP) { \
1382                                                 YYERROR; \
1383                                         } else if (fr->fr_flags & FR_STLOOSE) {\
1384                                                 YYERROR; \
1385                                         } else \
1386                                                 fr->fr_flags |= FR_STSTRICT;)
1387                                 }
1388         | IPFY_LOOSE            { DOALL(if (fr->fr_proto != IPPROTO_TCP) { \
1389                                                 YYERROR; \
1390                                         } else if (fr->fr_flags & FR_STSTRICT){\
1391                                                 YYERROR; \
1392                                         } else \
1393                                                 fr->fr_flags |= FR_STLOOSE;)
1394                                 }
1395         | IPFY_NEWISN           { DOALL(if (fr->fr_proto != IPPROTO_TCP) { \
1396                                                 YYERROR; \
1397                                           } else \
1398                                                 fr->fr_flags |= FR_NEWISN;)
1399                                 }
1400         | IPFY_NOICMPERR        { DOALL(fr->fr_flags |= FR_NOICMPERR;) }
1401
1402         | IPFY_SYNC             { DOALL(fr->fr_flags |= FR_STATESYNC;) }
1403         | IPFY_AGE YY_NUMBER            { DOALL(fr->fr_age[0] = $2; \
1404                                                 fr->fr_age[1] = $2;) }
1405         | IPFY_AGE YY_NUMBER '/' YY_NUMBER
1406                                         { DOALL(fr->fr_age[0] = $2; \
1407                                                 fr->fr_age[1] = $4;) }
1408         | IPFY_ICMPHEAD groupname
1409                                 { DOALL(seticmphead(&fr, $2);)
1410                                   free($2);
1411                                 }
1412         | IPFY_NOLOG
1413                                 { DOALL(fr->fr_nostatelog = 1;) }
1414         | IPFY_RPC
1415                                 { DOALL(fr->fr_rpc = 1;) }
1416         | IPFY_RPC IPFY_IN YY_STR
1417                                 { DOALL(fr->fr_rpc = 1;) }
1418         | IPFY_MAX_SRCS YY_NUMBER
1419                                 { DOALL(fr->fr_srctrack.ht_max_nodes = $2;) }
1420         | IPFY_MAX_PER_SRC YY_NUMBER
1421                                 { DOALL(fr->fr_srctrack.ht_max_per_node = $2; \
1422                                         fr->fr_srctrack.ht_netmask = \
1423                                         fr->fr_family == AF_INET ? 32: 128;)
1424                                 }
1425         | IPFY_MAX_PER_SRC YY_NUMBER '/' YY_NUMBER
1426                                 { DOALL(fr->fr_srctrack.ht_max_per_node = $2; \
1427                                         fr->fr_srctrack.ht_netmask = $4;)
1428                                 }
1429         ;
1430
1431 portnum:
1432         servicename                     { if (getport(frc, $1,
1433                                                       &($$), NULL) == -1)
1434                                                 yyerror("service unknown");
1435                                           $$ = ntohs($$);
1436                                           free($1);
1437                                         }
1438         | YY_NUMBER                     { if ($1 > 65535)       /* Unsigned */
1439                                                 yyerror("invalid port number");
1440                                           else
1441                                                 $$ = $1;
1442                                         }
1443         ;
1444
1445 withlist:
1446         withopt                         { nowith = 0; }
1447         | withlist withopt              { nowith = 0; }
1448         | withlist ',' withopt          { nowith = 0; }
1449         ;
1450
1451 withopt:
1452         opttype         { DOALL(fr->fr_flx |= $1; fr->fr_mflx |= $1;) }
1453         | notwith opttype               { DOALL(fr->fr_mflx |= $2;) }
1454         | ipopt ipopts                  { yyresetdict(); }
1455         | notwith ipopt ipopts          { yyresetdict(); }
1456         | startv6hdr ipv6hdrs           { yyresetdict(); }
1457         ;
1458
1459 ipopt:  IPFY_OPT                        { yysetdict(ipv4optwords); }
1460         ;
1461
1462 startv6hdr:
1463         IPFY_V6HDR      { if (frc->fr_family != AF_INET6)
1464                                 yyerror("only available with IPv6");
1465                           yysetdict(ipv6optwords);
1466                         }
1467         ;
1468
1469 notwith:
1470         IPFY_NOT                        { nowith = 1; }
1471         | IPFY_NO                       { nowith = 1; }
1472         ;
1473
1474 opttype:
1475         IPFY_IPOPTS                     { $$ = FI_OPTIONS; }
1476         | IPFY_SHORT                    { $$ = FI_SHORT; }
1477         | IPFY_NAT                      { $$ = FI_NATED; }
1478         | IPFY_BAD                      { $$ = FI_BAD; }
1479         | IPFY_BADNAT                   { $$ = FI_BADNAT; }
1480         | IPFY_BADSRC                   { $$ = FI_BADSRC; }
1481         | IPFY_LOWTTL                   { $$ = FI_LOWTTL; }
1482         | IPFY_FRAG                     { $$ = FI_FRAG; }
1483         | IPFY_FRAGBODY                 { $$ = FI_FRAGBODY; }
1484         | IPFY_FRAGS                    { $$ = FI_FRAG; }
1485         | IPFY_MBCAST                   { $$ = FI_MBCAST; }
1486         | IPFY_MULTICAST                { $$ = FI_MULTICAST; }
1487         | IPFY_BROADCAST                { $$ = FI_BROADCAST; }
1488         | IPFY_STATE                    { $$ = FI_STATE; }
1489         | IPFY_OOW                      { $$ = FI_OOW; }
1490         | IPFY_AH                       { $$ = FI_AH; }
1491         | IPFY_V6HDRS                   { $$ = FI_V6EXTHDR; }
1492         ;
1493
1494 ipopts: optlist         { DOALL(fr->fr_mip.fi_optmsk |= $1;
1495                                 if (fr->fr_family == AF_UNSPEC) {
1496                                         fr->fr_family = AF_INET;
1497                                         fr->fr_ip.fi_v = 4;
1498                                         fr->fr_mip.fi_v = 0xf;
1499                                 } else if (fr->fr_family != AF_INET) {
1500                                         YYERROR;
1501                                 }
1502                                 if (!nowith)
1503                                         fr->fr_ip.fi_optmsk |= $1;)
1504                         }
1505         ;
1506
1507 optlist:
1508         opt                             { $$ |= $1; }
1509         | optlist ',' opt               { $$ |= $1 | $3; }
1510         ;
1511
1512 ipv6hdrs:
1513         ipv6hdrlist     { DOALL(fr->fr_mip.fi_optmsk |= $1;
1514                                 if (!nowith)
1515                                         fr->fr_ip.fi_optmsk |= $1;)
1516                         }
1517         ;
1518
1519 ipv6hdrlist:
1520         ipv6hdr                         { $$ |= $1; }
1521         | ipv6hdrlist ',' ipv6hdr       { $$ |= $1 | $3; }
1522         ;
1523
1524 secname:
1525         seclevel                        { $$ |= $1; }
1526         | secname ',' seclevel          { $$ |= $1 | $3; }
1527         ;
1528
1529 seclevel:
1530         IPFY_SEC_UNC                    { $$ = secbit(IPSO_CLASS_UNCL); }
1531         | IPFY_SEC_CONF                 { $$ = secbit(IPSO_CLASS_CONF); }
1532         | IPFY_SEC_RSV1                 { $$ = secbit(IPSO_CLASS_RES1); }
1533         | IPFY_SEC_RSV2                 { $$ = secbit(IPSO_CLASS_RES2); }
1534         | IPFY_SEC_RSV3                 { $$ = secbit(IPSO_CLASS_RES3); }
1535         | IPFY_SEC_RSV4                 { $$ = secbit(IPSO_CLASS_RES4); }
1536         | IPFY_SEC_SEC                  { $$ = secbit(IPSO_CLASS_SECR); }
1537         | IPFY_SEC_TS                   { $$ = secbit(IPSO_CLASS_TOPS); }
1538         ;
1539
1540 icmptype:
1541         YY_NUMBER               { $$ = $1; }
1542         | YY_STR                { $$ = geticmptype(frc->fr_family, $1);
1543                                   if ($$ == -1)
1544                                         yyerror("unrecognised icmp type");
1545                                 }
1546         ;
1547
1548 icmpcode:
1549         YY_NUMBER                       { $$ = $1; }
1550         | IPFY_ICMPC_NETUNR             { $$ = ICMP_UNREACH_NET; }
1551         | IPFY_ICMPC_HSTUNR             { $$ = ICMP_UNREACH_HOST; }
1552         | IPFY_ICMPC_PROUNR             { $$ = ICMP_UNREACH_PROTOCOL; }
1553         | IPFY_ICMPC_PORUNR             { $$ = ICMP_UNREACH_PORT; }
1554         | IPFY_ICMPC_NEEDF              { $$ = ICMP_UNREACH_NEEDFRAG; }
1555         | IPFY_ICMPC_SRCFAIL            { $$ = ICMP_UNREACH_SRCFAIL; }
1556         | IPFY_ICMPC_NETUNK             { $$ = ICMP_UNREACH_NET_UNKNOWN; }
1557         | IPFY_ICMPC_HSTUNK             { $$ = ICMP_UNREACH_HOST_UNKNOWN; }
1558         | IPFY_ICMPC_ISOLATE            { $$ = ICMP_UNREACH_ISOLATED; }
1559         | IPFY_ICMPC_NETPRO             { $$ = ICMP_UNREACH_NET_PROHIB; }
1560         | IPFY_ICMPC_HSTPRO             { $$ = ICMP_UNREACH_HOST_PROHIB; }
1561         | IPFY_ICMPC_NETTOS             { $$ = ICMP_UNREACH_TOSNET; }
1562         | IPFY_ICMPC_HSTTOS             { $$ = ICMP_UNREACH_TOSHOST; }
1563         | IPFY_ICMPC_FLTPRO             { $$ = ICMP_UNREACH_ADMIN_PROHIBIT; }
1564         | IPFY_ICMPC_HSTPRE             { $$ = 14; }
1565         | IPFY_ICMPC_CUTPRE             { $$ = 15; }
1566         ;
1567
1568 opt:
1569         IPFY_IPOPT_NOP                  { $$ = getoptbyvalue(IPOPT_NOP); }
1570         | IPFY_IPOPT_RR                 { $$ = getoptbyvalue(IPOPT_RR); }
1571         | IPFY_IPOPT_ZSU                { $$ = getoptbyvalue(IPOPT_ZSU); }
1572         | IPFY_IPOPT_MTUP               { $$ = getoptbyvalue(IPOPT_MTUP); }
1573         | IPFY_IPOPT_MTUR               { $$ = getoptbyvalue(IPOPT_MTUR); }
1574         | IPFY_IPOPT_ENCODE             { $$ = getoptbyvalue(IPOPT_ENCODE); }
1575         | IPFY_IPOPT_TS                 { $$ = getoptbyvalue(IPOPT_TS); }
1576         | IPFY_IPOPT_TR                 { $$ = getoptbyvalue(IPOPT_TR); }
1577         | IPFY_IPOPT_SEC                { $$ = getoptbyvalue(IPOPT_SECURITY); }
1578         | IPFY_IPOPT_LSRR               { $$ = getoptbyvalue(IPOPT_LSRR); }
1579         | IPFY_IPOPT_ESEC               { $$ = getoptbyvalue(IPOPT_E_SEC); }
1580         | IPFY_IPOPT_CIPSO              { $$ = getoptbyvalue(IPOPT_CIPSO); }
1581         | IPFY_IPOPT_CIPSO doi          { $$ = getoptbyvalue(IPOPT_CIPSO); }
1582         | IPFY_IPOPT_SATID              { $$ = getoptbyvalue(IPOPT_SATID); }
1583         | IPFY_IPOPT_SSRR               { $$ = getoptbyvalue(IPOPT_SSRR); }
1584         | IPFY_IPOPT_ADDEXT             { $$ = getoptbyvalue(IPOPT_ADDEXT); }
1585         | IPFY_IPOPT_VISA               { $$ = getoptbyvalue(IPOPT_VISA); }
1586         | IPFY_IPOPT_IMITD              { $$ = getoptbyvalue(IPOPT_IMITD); }
1587         | IPFY_IPOPT_EIP                { $$ = getoptbyvalue(IPOPT_EIP); }
1588         | IPFY_IPOPT_FINN               { $$ = getoptbyvalue(IPOPT_FINN); }
1589         | IPFY_IPOPT_DPS                { $$ = getoptbyvalue(IPOPT_DPS); }
1590         | IPFY_IPOPT_SDB                { $$ = getoptbyvalue(IPOPT_SDB); }
1591         | IPFY_IPOPT_NSAPA              { $$ = getoptbyvalue(IPOPT_NSAPA); }
1592         | IPFY_IPOPT_RTRALRT            { $$ = getoptbyvalue(IPOPT_RTRALRT); }
1593         | IPFY_IPOPT_UMP                { $$ = getoptbyvalue(IPOPT_UMP); }
1594         | setsecclass secname
1595                         { DOALL(fr->fr_mip.fi_secmsk |= $2;
1596                                 if (fr->fr_family == AF_UNSPEC) {
1597                                         fr->fr_family = AF_INET;
1598                                         fr->fr_ip.fi_v = 4;
1599                                         fr->fr_mip.fi_v = 0xf;
1600                                 } else if (fr->fr_family != AF_INET) {
1601                                         YYERROR;
1602                                 }
1603                                 if (!nowith)
1604                                         fr->fr_ip.fi_secmsk |= $2;)
1605                           $$ = 0;
1606                           yyresetdict();
1607                         }
1608         ;
1609
1610 setsecclass:
1611         IPFY_SECCLASS                   { yysetdict(ipv4secwords); }
1612         ;
1613
1614 doi:    IPFY_DOI YY_NUMBER              { DOALL(fr->fr_doimask = 0xffffffff; \
1615                                                 if (!nowith) \
1616                                                         fr->fr_doi = $2;) }
1617         | IPFY_DOI YY_HEX               { DOALL(fr->fr_doimask = 0xffffffff; \
1618                                                 if (!nowith) \
1619                                                         fr->fr_doi = $2;) }
1620         ;
1621
1622 ipv6hdr:
1623         IPFY_AH                 { $$ = getv6optbyvalue(IPPROTO_AH); }
1624         | IPFY_IPV6OPT_DSTOPTS  { $$ = getv6optbyvalue(IPPROTO_DSTOPTS); }
1625         | IPFY_IPV6OPT_ESP      { $$ = getv6optbyvalue(IPPROTO_ESP); }
1626         | IPFY_IPV6OPT_HOPOPTS  { $$ = getv6optbyvalue(IPPROTO_HOPOPTS); }
1627         | IPFY_IPV6OPT_IPV6     { $$ = getv6optbyvalue(IPPROTO_IPV6); }
1628         | IPFY_IPV6OPT_NONE     { $$ = getv6optbyvalue(IPPROTO_NONE); }
1629         | IPFY_IPV6OPT_ROUTING  { $$ = getv6optbyvalue(IPPROTO_ROUTING); }
1630         | IPFY_IPV6OPT_FRAG     { $$ = getv6optbyvalue(IPPROTO_FRAGMENT); }
1631         | IPFY_IPV6OPT_MOBILITY { $$ = getv6optbyvalue(IPPROTO_MOBILITY); }
1632         ;
1633
1634 level:  IPFY_LEVEL                      { setsyslog(); }
1635         ;
1636
1637 loglevel:
1638         priority                        { fr->fr_loglevel = LOG_LOCAL0|$1; }
1639         | facility '.' priority         { fr->fr_loglevel = $1 | $3; }
1640         ;
1641
1642 facility:
1643         IPFY_FAC_KERN                   { $$ = LOG_KERN; }
1644         | IPFY_FAC_USER                 { $$ = LOG_USER; }
1645         | IPFY_FAC_MAIL                 { $$ = LOG_MAIL; }
1646         | IPFY_FAC_DAEMON               { $$ = LOG_DAEMON; }
1647         | IPFY_FAC_AUTH                 { $$ = LOG_AUTH; }
1648         | IPFY_FAC_SYSLOG               { $$ = LOG_SYSLOG; }
1649         | IPFY_FAC_LPR                  { $$ = LOG_LPR; }
1650         | IPFY_FAC_NEWS                 { $$ = LOG_NEWS; }
1651         | IPFY_FAC_UUCP                 { $$ = LOG_UUCP; }
1652         | IPFY_FAC_CRON                 { $$ = LOG_CRON; }
1653         | IPFY_FAC_FTP                  { $$ = LOG_FTP; }
1654         | IPFY_FAC_AUTHPRIV             { $$ = LOG_AUTHPRIV; }
1655         | IPFY_FAC_AUDIT                { $$ = LOG_AUDIT; }
1656         | IPFY_FAC_LFMT                 { $$ = LOG_LFMT; }
1657         | IPFY_FAC_LOCAL0               { $$ = LOG_LOCAL0; }
1658         | IPFY_FAC_LOCAL1               { $$ = LOG_LOCAL1; }
1659         | IPFY_FAC_LOCAL2               { $$ = LOG_LOCAL2; }
1660         | IPFY_FAC_LOCAL3               { $$ = LOG_LOCAL3; }
1661         | IPFY_FAC_LOCAL4               { $$ = LOG_LOCAL4; }
1662         | IPFY_FAC_LOCAL5               { $$ = LOG_LOCAL5; }
1663         | IPFY_FAC_LOCAL6               { $$ = LOG_LOCAL6; }
1664         | IPFY_FAC_LOCAL7               { $$ = LOG_LOCAL7; }
1665         | IPFY_FAC_SECURITY             { $$ = LOG_SECURITY; }
1666         ;
1667
1668 priority:
1669         IPFY_PRI_EMERG                  { $$ = LOG_EMERG; }
1670         | IPFY_PRI_ALERT                { $$ = LOG_ALERT; }
1671         | IPFY_PRI_CRIT                 { $$ = LOG_CRIT; }
1672         | IPFY_PRI_ERR                  { $$ = LOG_ERR; }
1673         | IPFY_PRI_WARN                 { $$ = LOG_WARNING; }
1674         | IPFY_PRI_NOTICE               { $$ = LOG_NOTICE; }
1675         | IPFY_PRI_INFO                 { $$ = LOG_INFO; }
1676         | IPFY_PRI_DEBUG                { $$ = LOG_DEBUG; }
1677         ;
1678
1679 compare:
1680         YY_CMP_EQ                       { $$ = FR_EQUAL; }
1681         | YY_CMP_NE                     { $$ = FR_NEQUAL; }
1682         | YY_CMP_LT                     { $$ = FR_LESST; }
1683         | YY_CMP_LE                     { $$ = FR_LESSTE; }
1684         | YY_CMP_GT                     { $$ = FR_GREATERT; }
1685         | YY_CMP_GE                     { $$ = FR_GREATERTE; }
1686         ;
1687
1688 range:  YY_RANGE_IN                     { $$ = FR_INRANGE; }
1689         | YY_RANGE_OUT                  { $$ = FR_OUTRANGE; }
1690         | ':'                           { $$ = FR_INCRANGE; }
1691         ;
1692
1693 servicename:
1694         YY_STR                          { $$ = $1; }
1695         ;
1696
1697 interfacename:  name                            { $$ = $1; }
1698         | name ':' YY_NUMBER
1699                 { $$ = $1;
1700                   fprintf(stderr, "%d: Logical interface %s:%d unsupported, "
1701                           "use the physical interface %s instead.\n",
1702                           yylineNum, $1, $3, $1);
1703                 }
1704         ;
1705
1706 name:   YY_STR                          { $$ = $1; }
1707         | '-'                           { $$ = strdup("-"); }
1708         ;
1709
1710 ipv4_16:
1711         YY_NUMBER '.' YY_NUMBER
1712                 { if ($1 > 255 || $3 > 255) {
1713                         yyerror("Invalid octet string for IP address");
1714                         return 0;
1715                   }
1716                   $$.s_addr = ($1 << 24) | ($3 << 16);
1717                   $$.s_addr = htonl($$.s_addr);
1718                 }
1719         ;
1720
1721 ipv4_24:
1722         ipv4_16 '.' YY_NUMBER
1723                 { if ($3 > 255) {
1724                         yyerror("Invalid octet string for IP address");
1725                         return 0;
1726                   }
1727                   $$.s_addr |= htonl($3 << 8);
1728                 }
1729         ;
1730
1731 ipv4:   ipv4_24 '.' YY_NUMBER
1732                 { if ($3 > 255) {
1733                         yyerror("Invalid octet string for IP address");
1734                         return 0;
1735                   }
1736                   $$.s_addr |= htonl($3);
1737                 }
1738         | ipv4_24
1739         | ipv4_16
1740         ;
1741
1742 %%
1743
1744
1745 static  struct  wordtab ipfwords[] = {
1746         { "age",                        IPFY_AGE },
1747         { "ah",                         IPFY_AH },
1748         { "all",                        IPFY_ALL },
1749         { "and",                        IPFY_AND },
1750         { "auth",                       IPFY_AUTH },
1751         { "bad",                        IPFY_BAD },
1752         { "bad-nat",                    IPFY_BADNAT },
1753         { "bad-src",                    IPFY_BADSRC },
1754         { "bcast",                      IPFY_BROADCAST },
1755         { "block",                      IPFY_BLOCK },
1756         { "body",                       IPFY_BODY },
1757         { "bpf-v4",                     IPFY_BPFV4 },
1758 #ifdef USE_INET6
1759         { "bpf-v6",                     IPFY_BPFV6 },
1760 #endif
1761         { "call",                       IPFY_CALL },
1762         { "code",                       IPFY_ICMPCODE },
1763         { "comment",                    IPFY_COMMENT },
1764         { "count",                      IPFY_COUNT },
1765         { "decapsulate",                IPFY_DECAPS },
1766         { "dstlist",                    IPFY_DSTLIST },
1767         { "doi",                        IPFY_DOI },
1768         { "dup-to",                     IPFY_DUPTO },
1769         { "eq",                         YY_CMP_EQ },
1770         { "esp",                        IPFY_ESP },
1771         { "exp",                        IPFY_IPFEXPR },
1772         { "family",                     IPFY_FAMILY },
1773         { "fastroute",                  IPFY_FROUTE },
1774         { "first",                      IPFY_FIRST },
1775         { "flags",                      IPFY_FLAGS },
1776         { "frag",                       IPFY_FRAG },
1777         { "frag-body",                  IPFY_FRAGBODY },
1778         { "frags",                      IPFY_FRAGS },
1779         { "from",                       IPFY_FROM },
1780         { "ge",                         YY_CMP_GE },
1781         { "group",                      IPFY_GROUP },
1782         { "gt",                         YY_CMP_GT },
1783         { "head",                       IPFY_HEAD },
1784         { "icmp",                       IPFY_ICMP },
1785         { "icmp-head",                  IPFY_ICMPHEAD },
1786         { "icmp-type",                  IPFY_ICMPTYPE },
1787         { "in",                         IPFY_IN },
1788         { "in-via",                     IPFY_INVIA },
1789         { "inet",                       IPFY_INET },
1790         { "inet6",                      IPFY_INET6 },
1791         { "ipopt",                      IPFY_IPOPTS },
1792         { "ipopts",                     IPFY_IPOPTS },
1793         { "keep",                       IPFY_KEEP },
1794         { "l5-as",                      IPFY_L5AS },
1795         { "le",                         YY_CMP_LE },
1796         { "level",                      IPFY_LEVEL },
1797         { "limit",                      IPFY_LIMIT },
1798         { "log",                        IPFY_LOG },
1799         { "loose",                      IPFY_LOOSE },
1800         { "lowttl",                     IPFY_LOWTTL },
1801         { "lt",                         YY_CMP_LT },
1802         { "mask",                       IPFY_MASK },
1803         { "match-tag",                  IPFY_MATCHTAG },
1804         { "max-per-src",                IPFY_MAX_PER_SRC },
1805         { "max-srcs",                   IPFY_MAX_SRCS },
1806         { "mbcast",                     IPFY_MBCAST },
1807         { "mcast",                      IPFY_MULTICAST },
1808         { "multicast",                  IPFY_MULTICAST },
1809         { "nat",                        IPFY_NAT },
1810         { "ne",                         YY_CMP_NE },
1811         { "net",                        IPFY_NETWORK },
1812         { "newisn",                     IPFY_NEWISN },
1813         { "no",                         IPFY_NO },
1814         { "no-icmp-err",                IPFY_NOICMPERR },
1815         { "nolog",                      IPFY_NOLOG },
1816         { "nomatch",                    IPFY_NOMATCH },
1817         { "now",                        IPFY_NOW },
1818         { "not",                        IPFY_NOT },
1819         { "oow",                        IPFY_OOW },
1820         { "on",                         IPFY_ON },
1821         { "opt",                        IPFY_OPT },
1822         { "or-block",                   IPFY_ORBLOCK },
1823         { "out",                        IPFY_OUT },
1824         { "out-via",                    IPFY_OUTVIA },
1825         { "pass",                       IPFY_PASS },
1826         { "port",                       IPFY_PORT },
1827         { "pps",                        IPFY_PPS },
1828         { "preauth",                    IPFY_PREAUTH },
1829         { "proto",                      IPFY_PROTO },
1830         { "quick",                      IPFY_QUICK },
1831         { "reply-to",                   IPFY_REPLY_TO },
1832         { "return-icmp",                IPFY_RETICMP },
1833         { "return-icmp-as-dest",        IPFY_RETICMPASDST },
1834         { "return-rst",                 IPFY_RETRST },
1835         { "route-to",                   IPFY_ROUTETO },
1836         { "rule-ttl",                   IPFY_RULETTL },
1837         { "rpc",                        IPFY_RPC },
1838         { "sec-class",                  IPFY_SECCLASS },
1839         { "set",                        IPFY_SET },
1840         { "set-tag",                    IPFY_SETTAG },
1841         { "skip",                       IPFY_SKIP },
1842         { "short",                      IPFY_SHORT },
1843         { "state",                      IPFY_STATE },
1844         { "state-age",                  IPFY_AGE },
1845         { "strict",                     IPFY_STRICT },
1846         { "sync",                       IPFY_SYNC },
1847         { "tcp",                        IPFY_TCP },
1848         { "tcp-udp",                    IPFY_TCPUDP },
1849         { "tos",                        IPFY_TOS },
1850         { "to",                         IPFY_TO },
1851         { "ttl",                        IPFY_TTL },
1852         { "udp",                        IPFY_UDP },
1853         { "v6hdr",                      IPFY_V6HDR },
1854         { "v6hdrs",                     IPFY_V6HDRS },
1855         { "with",                       IPFY_WITH },
1856         { NULL,                         0 }
1857 };
1858
1859 static  struct  wordtab addrwords[] = {
1860         { "any",                        IPFY_ANY },
1861         { "hash",                       IPFY_HASH },
1862         { "pool",                       IPFY_POOL },
1863         { NULL,                         0 }
1864 };
1865
1866 static  struct  wordtab maskwords[] = {
1867         { "broadcast",                  IPFY_BROADCAST },
1868         { "netmasked",                  IPFY_NETMASKED },
1869         { "network",                    IPFY_NETWORK },
1870         { "peer",                       IPFY_PEER },
1871         { NULL,                         0 }
1872 };
1873
1874 static  struct  wordtab icmpcodewords[] = {
1875         { "cutoff-preced",              IPFY_ICMPC_CUTPRE },
1876         { "filter-prohib",              IPFY_ICMPC_FLTPRO },
1877         { "isolate",                    IPFY_ICMPC_ISOLATE },
1878         { "needfrag",                   IPFY_ICMPC_NEEDF },
1879         { "net-prohib",                 IPFY_ICMPC_NETPRO },
1880         { "net-tos",                    IPFY_ICMPC_NETTOS },
1881         { "host-preced",                IPFY_ICMPC_HSTPRE },
1882         { "host-prohib",                IPFY_ICMPC_HSTPRO },
1883         { "host-tos",                   IPFY_ICMPC_HSTTOS },
1884         { "host-unk",                   IPFY_ICMPC_HSTUNK },
1885         { "host-unr",                   IPFY_ICMPC_HSTUNR },
1886         { "net-unk",                    IPFY_ICMPC_NETUNK },
1887         { "net-unr",                    IPFY_ICMPC_NETUNR },
1888         { "port-unr",                   IPFY_ICMPC_PORUNR },
1889         { "proto-unr",                  IPFY_ICMPC_PROUNR },
1890         { "srcfail",                    IPFY_ICMPC_SRCFAIL },
1891         { NULL,                         0 },
1892 };
1893
1894 static  struct  wordtab ipv4optwords[] = {
1895         { "addext",                     IPFY_IPOPT_ADDEXT },
1896         { "cipso",                      IPFY_IPOPT_CIPSO },
1897         { "dps",                        IPFY_IPOPT_DPS },
1898         { "e-sec",                      IPFY_IPOPT_ESEC },
1899         { "eip",                        IPFY_IPOPT_EIP },
1900         { "encode",                     IPFY_IPOPT_ENCODE },
1901         { "finn",                       IPFY_IPOPT_FINN },
1902         { "imitd",                      IPFY_IPOPT_IMITD },
1903         { "lsrr",                       IPFY_IPOPT_LSRR },
1904         { "mtup",                       IPFY_IPOPT_MTUP },
1905         { "mtur",                       IPFY_IPOPT_MTUR },
1906         { "nop",                        IPFY_IPOPT_NOP },
1907         { "nsapa",                      IPFY_IPOPT_NSAPA },
1908         { "rr",                         IPFY_IPOPT_RR },
1909         { "rtralrt",                    IPFY_IPOPT_RTRALRT },
1910         { "satid",                      IPFY_IPOPT_SATID },
1911         { "sdb",                        IPFY_IPOPT_SDB },
1912         { "sec",                        IPFY_IPOPT_SEC },
1913         { "ssrr",                       IPFY_IPOPT_SSRR },
1914         { "tr",                         IPFY_IPOPT_TR },
1915         { "ts",                         IPFY_IPOPT_TS },
1916         { "ump",                        IPFY_IPOPT_UMP },
1917         { "visa",                       IPFY_IPOPT_VISA },
1918         { "zsu",                        IPFY_IPOPT_ZSU },
1919         { NULL,                         0 },
1920 };
1921
1922 static  struct  wordtab ipv4secwords[] = {
1923         { "confid",                     IPFY_SEC_CONF },
1924         { "reserv-1",                   IPFY_SEC_RSV1 },
1925         { "reserv-2",                   IPFY_SEC_RSV2 },
1926         { "reserv-3",                   IPFY_SEC_RSV3 },
1927         { "reserv-4",                   IPFY_SEC_RSV4 },
1928         { "secret",                     IPFY_SEC_SEC },
1929         { "topsecret",                  IPFY_SEC_TS },
1930         { "unclass",                    IPFY_SEC_UNC },
1931         { NULL,                         0 },
1932 };
1933
1934 static  struct  wordtab ipv6optwords[] = {
1935         { "dstopts",                    IPFY_IPV6OPT_DSTOPTS },
1936         { "esp",                        IPFY_IPV6OPT_ESP },
1937         { "frag",                       IPFY_IPV6OPT_FRAG },
1938         { "hopopts",                    IPFY_IPV6OPT_HOPOPTS },
1939         { "ipv6",                       IPFY_IPV6OPT_IPV6 },
1940         { "mobility",                   IPFY_IPV6OPT_MOBILITY },
1941         { "none",                       IPFY_IPV6OPT_NONE },
1942         { "routing",                    IPFY_IPV6OPT_ROUTING },
1943         { NULL,                         0 },
1944 };
1945
1946 static  struct  wordtab logwords[] = {
1947         { "kern",                       IPFY_FAC_KERN },
1948         { "user",                       IPFY_FAC_USER },
1949         { "mail",                       IPFY_FAC_MAIL },
1950         { "daemon",                     IPFY_FAC_DAEMON },
1951         { "auth",                       IPFY_FAC_AUTH },
1952         { "syslog",                     IPFY_FAC_SYSLOG },
1953         { "lpr",                        IPFY_FAC_LPR },
1954         { "news",                       IPFY_FAC_NEWS },
1955         { "uucp",                       IPFY_FAC_UUCP },
1956         { "cron",                       IPFY_FAC_CRON },
1957         { "ftp",                        IPFY_FAC_FTP },
1958         { "authpriv",                   IPFY_FAC_AUTHPRIV },
1959         { "audit",                      IPFY_FAC_AUDIT },
1960         { "logalert",                   IPFY_FAC_LFMT },
1961         { "console",                    IPFY_FAC_CONSOLE },
1962         { "security",                   IPFY_FAC_SECURITY },
1963         { "local0",                     IPFY_FAC_LOCAL0 },
1964         { "local1",                     IPFY_FAC_LOCAL1 },
1965         { "local2",                     IPFY_FAC_LOCAL2 },
1966         { "local3",                     IPFY_FAC_LOCAL3 },
1967         { "local4",                     IPFY_FAC_LOCAL4 },
1968         { "local5",                     IPFY_FAC_LOCAL5 },
1969         { "local6",                     IPFY_FAC_LOCAL6 },
1970         { "local7",                     IPFY_FAC_LOCAL7 },
1971         { "emerg",                      IPFY_PRI_EMERG },
1972         { "alert",                      IPFY_PRI_ALERT },
1973         { "crit",                       IPFY_PRI_CRIT },
1974         { "err",                        IPFY_PRI_ERR },
1975         { "warn",                       IPFY_PRI_WARN },
1976         { "notice",                     IPFY_PRI_NOTICE },
1977         { "info",                       IPFY_PRI_INFO },
1978         { "debug",                      IPFY_PRI_DEBUG },
1979         { NULL,                         0 },
1980 };
1981
1982
1983
1984
1985 int ipf_parsefile(fd, addfunc, iocfuncs, filename)
1986 int fd;
1987 addfunc_t addfunc;
1988 ioctlfunc_t *iocfuncs;
1989 char *filename;
1990 {
1991         FILE *fp = NULL;
1992         char *s;
1993
1994         yylineNum = 1;
1995         yysettab(ipfwords);
1996
1997         s = getenv("YYDEBUG");
1998         if (s != NULL)
1999                 yydebug = atoi(s);
2000         else
2001                 yydebug = 0;
2002
2003         if (strcmp(filename, "-")) {
2004                 fp = fopen(filename, "r");
2005                 if (fp == NULL) {
2006                         fprintf(stderr, "fopen(%s) failed: %s\n", filename,
2007                                 STRERROR(errno));
2008                         return -1;
2009                 }
2010         } else
2011                 fp = stdin;
2012
2013         while (ipf_parsesome(fd, addfunc, iocfuncs, fp) == 1)
2014                 ;
2015         if (fp != NULL)
2016                 fclose(fp);
2017         return 0;
2018 }
2019
2020
2021 int ipf_parsesome(fd, addfunc, iocfuncs, fp)
2022 int fd;
2023 addfunc_t addfunc;
2024 ioctlfunc_t *iocfuncs;
2025 FILE *fp;
2026 {
2027         char *s;
2028         int i;
2029
2030         ipffd = fd;
2031         for (i = 0; i <= IPL_LOGMAX; i++)
2032                 ipfioctls[i] = iocfuncs[i];
2033         ipfaddfunc = addfunc;
2034
2035         if (feof(fp))
2036                 return 0;
2037         i = fgetc(fp);
2038         if (i == EOF)
2039                 return 0;
2040         if (ungetc(i, fp) == 0)
2041                 return 0;
2042         if (feof(fp))
2043                 return 0;
2044         s = getenv("YYDEBUG");
2045         if (s != NULL)
2046                 yydebug = atoi(s);
2047         else
2048                 yydebug = 0;
2049
2050         yyin = fp;
2051         yyparse();
2052         return 1;
2053 }
2054
2055
2056 static void newrule()
2057 {
2058         frentry_t *frn;
2059
2060         frn = allocfr();
2061         for (fr = frtop; fr != NULL && fr->fr_next != NULL; fr = fr->fr_next)
2062                 ;
2063         if (fr != NULL) {
2064                 fr->fr_next = frn;
2065                 frn->fr_pnext = &fr->fr_next;
2066         }
2067         if (frtop == NULL) {
2068                 frtop = frn;
2069                 frn->fr_pnext = &frtop;
2070         }
2071         fr = frn;
2072         frc = frn;
2073         fr->fr_loglevel = 0xffff;
2074         fr->fr_isc = (void *)-1;
2075         fr->fr_logtag = FR_NOLOGTAG;
2076         fr->fr_type = FR_T_NONE;
2077         fr->fr_flineno = yylineNum;
2078
2079         if (use_inet6 == 1)
2080                 fr->fr_family = AF_INET6;
2081         else if (use_inet6 == -1)
2082                 fr->fr_family = AF_INET;
2083
2084         nrules = 1;
2085 }
2086
2087
2088 static void setipftype()
2089 {
2090         for (fr = frc; fr != NULL; fr = fr->fr_next) {
2091                 if (fr->fr_type == FR_T_NONE) {
2092                         fr->fr_type = FR_T_IPF;
2093                         fr->fr_data = (void *)calloc(sizeof(fripf_t), 1);
2094                         fr->fr_dsize = sizeof(fripf_t);
2095                         fr->fr_family = frc->fr_family;
2096                         if (fr->fr_family == AF_INET) {
2097                                 fr->fr_ip.fi_v = 4;
2098                         }
2099                         else if (fr->fr_family == AF_INET6) {
2100                                 fr->fr_ip.fi_v = 6;
2101                         }
2102                         fr->fr_mip.fi_v = 0xf;
2103                         fr->fr_ipf->fri_sifpidx = -1;
2104                         fr->fr_ipf->fri_difpidx = -1;
2105                 }
2106                 if (fr->fr_type != FR_T_IPF) {
2107                         fprintf(stderr, "IPF Type not set\n");
2108                 }
2109         }
2110 }
2111
2112
2113 static frentry_t *addrule()
2114 {
2115         frentry_t *f, *f1, *f2;
2116         int count;
2117
2118         for (f2 = frc; f2->fr_next != NULL; f2 = f2->fr_next)
2119                 ;
2120
2121         count = nrules;
2122         f = f2;
2123         for (f1 = frc; count > 0; count--, f1 = f1->fr_next) {
2124                 f->fr_next = allocfr();
2125                 if (f->fr_next == NULL)
2126                         return NULL;
2127                 f->fr_next->fr_pnext = &f->fr_next;
2128                 added++;
2129                 f = f->fr_next;
2130                 *f = *f1;
2131                 f->fr_next = NULL;
2132                 if (f->fr_caddr != NULL) {
2133                         f->fr_caddr = malloc(f->fr_dsize);
2134                         bcopy(f1->fr_caddr, f->fr_caddr, f->fr_dsize);
2135                 }
2136         }
2137
2138         return f2->fr_next;
2139 }
2140
2141
2142 static int
2143 lookuphost(name, addrp)
2144         char *name;
2145         i6addr_t *addrp;
2146 {
2147         int i;
2148
2149         hashed = 0;
2150         pooled = 0;
2151         dynamic = -1;
2152
2153         for (i = 0; i < 4; i++) {
2154                 if (fr->fr_ifnames[i] == -1)
2155                         continue;
2156                 if (strcmp(name, fr->fr_names + fr->fr_ifnames[i]) == 0) {
2157                         ifpflag = FRI_DYNAMIC;
2158                         dynamic = addname(&fr, name);
2159                         return 1;
2160                 }
2161         }
2162
2163         if (gethost(AF_INET, name, addrp) == -1) {
2164                 fprintf(stderr, "unknown name \"%s\"\n", name);
2165                 return -1;
2166         }
2167         return 0;
2168 }
2169
2170
2171 static void dobpf(v, phrase)
2172 int v;
2173 char *phrase;
2174 {
2175 #ifdef IPFILTER_BPF
2176         struct bpf_program bpf;
2177         struct pcap *p;
2178 #endif
2179         fakebpf_t *fb;
2180         u_32_t l;
2181         char *s;
2182         int i;
2183
2184         for (fr = frc; fr != NULL; fr = fr->fr_next) {
2185                 if (fr->fr_type != FR_T_NONE) {
2186                         fprintf(stderr, "cannot mix IPF and BPF matching\n");
2187                         return;
2188                 }
2189                 fr->fr_family = vtof(v);
2190                 fr->fr_type = FR_T_BPFOPC;
2191
2192                 if (!strncmp(phrase, "0x", 2)) {
2193                         fb = malloc(sizeof(fakebpf_t));
2194
2195                         for (i = 0, s = strtok(phrase, " \r\n\t"); s != NULL;
2196                              s = strtok(NULL, " \r\n\t"), i++) {
2197                                 fb = realloc(fb, (i / 4 + 1) * sizeof(*fb));
2198                                 l = (u_32_t)strtol(s, NULL, 0);
2199                                 switch (i & 3)
2200                                 {
2201                                 case 0 :
2202                                         fb[i / 4].fb_c = l & 0xffff;
2203                                         break;
2204                                 case 1 :
2205                                         fb[i / 4].fb_t = l & 0xff;
2206                                         break;
2207                                 case 2 :
2208                                         fb[i / 4].fb_f = l & 0xff;
2209                                         break;
2210                                 case 3 :
2211                                         fb[i / 4].fb_k = l;
2212                                         break;
2213                                 }
2214                         }
2215                         if ((i & 3) != 0) {
2216                                 fprintf(stderr,
2217                                         "Odd number of bytes in BPF code\n");
2218                                 exit(1);
2219                         }
2220                         i--;
2221                         fr->fr_dsize = (i / 4 + 1) * sizeof(*fb);
2222                         fr->fr_data = fb;
2223                         return;
2224                 }
2225
2226 #ifdef IPFILTER_BPF
2227                 bzero((char *)&bpf, sizeof(bpf));
2228                 p = pcap_open_dead(DLT_RAW, 1);
2229                 if (!p) {
2230                         fprintf(stderr, "pcap_open_dead failed\n");
2231                         return;
2232                 }
2233
2234                 if (pcap_compile(p, &bpf, phrase, 1, 0xffffffff)) {
2235                         pcap_perror(p, "ipf");
2236                         pcap_close(p);
2237                         fprintf(stderr, "pcap parsing failed (%s)\n", phrase);
2238                         return;
2239                 }
2240                 pcap_close(p);
2241
2242                 fr->fr_dsize = bpf.bf_len * sizeof(struct bpf_insn);
2243                 fr->fr_data = malloc(fr->fr_dsize);
2244                 bcopy((char *)bpf.bf_insns, fr->fr_data, fr->fr_dsize);
2245                 if (!bpf_validate(fr->fr_data, bpf.bf_len)) {
2246                         fprintf(stderr, "BPF validation failed\n");
2247                         return;
2248                 }
2249 #endif
2250         }
2251
2252 #ifdef IPFILTER_BPF
2253         if (opts & OPT_DEBUG)
2254                 bpf_dump(&bpf, 0);
2255 #else
2256         fprintf(stderr, "BPF filter expressions not supported\n");
2257         exit(1);
2258 #endif
2259 }
2260
2261
2262 static void resetaddr()
2263 {
2264         hashed = 0;
2265         pooled = 0;
2266         dynamic = -1;
2267 }
2268
2269
2270 static alist_t *newalist(ptr)
2271 alist_t *ptr;
2272 {
2273         alist_t *al;
2274
2275         al = malloc(sizeof(*al));
2276         if (al == NULL)
2277                 return NULL;
2278         al->al_not = 0;
2279         al->al_next = ptr;
2280         return al;
2281 }
2282
2283
2284 static int
2285 makepool(list)
2286         alist_t *list;
2287 {
2288         ip_pool_node_t *n, *top;
2289         ip_pool_t pool;
2290         alist_t *a;
2291         int num;
2292
2293         if (list == NULL)
2294                 return 0;
2295         top = calloc(1, sizeof(*top));
2296         if (top == NULL)
2297                 return 0;
2298
2299         for (n = top, a = list; (n != NULL) && (a != NULL); a = a->al_next) {
2300                 if (use_inet6 == 1) {
2301 #ifdef AF_INET6
2302                         n->ipn_addr.adf_family = AF_INET6;
2303                         n->ipn_addr.adf_addr = a->al_i6addr;
2304                         n->ipn_addr.adf_len = offsetof(addrfamily_t,
2305                                                        adf_addr) + 16;
2306                         n->ipn_mask.adf_family = AF_INET6;
2307                         n->ipn_mask.adf_addr = a->al_i6mask;
2308                         n->ipn_mask.adf_len = offsetof(addrfamily_t,
2309                                                        adf_addr) + 16;
2310
2311 #endif
2312                 } else {
2313                         n->ipn_addr.adf_family = AF_INET;
2314                         n->ipn_addr.adf_addr.in4.s_addr = a->al_1;
2315                         n->ipn_addr.adf_len = offsetof(addrfamily_t,
2316                                                        adf_addr) + 4;
2317                         n->ipn_mask.adf_family = AF_INET;
2318                         n->ipn_mask.adf_addr.in4.s_addr = a->al_2;
2319                         n->ipn_mask.adf_len = offsetof(addrfamily_t,
2320                                                        adf_addr) + 4;
2321                 }
2322                 n->ipn_info = a->al_not;
2323                 if (a->al_next != NULL) {
2324                         n->ipn_next = calloc(1, sizeof(*n));
2325                         n = n->ipn_next;
2326                 }
2327         }
2328
2329         bzero((char *)&pool, sizeof(pool));
2330         pool.ipo_unit = IPL_LOGIPF;
2331         pool.ipo_list = top;
2332         num = load_pool(&pool, ipfioctls[IPL_LOGLOOKUP]);
2333
2334         while ((n = top) != NULL) {
2335                 top = n->ipn_next;
2336                 free(n);
2337         }
2338         return num;
2339 }
2340
2341
2342 static u_int makehash(list)
2343 alist_t *list;
2344 {
2345         iphtent_t *n, *top;
2346         iphtable_t iph;
2347         alist_t *a;
2348         int num;
2349
2350         if (list == NULL)
2351                 return 0;
2352         top = calloc(1, sizeof(*top));
2353         if (top == NULL)
2354                 return 0;
2355
2356         for (n = top, a = list; (n != NULL) && (a != NULL); a = a->al_next) {
2357                 if (a->al_family == AF_INET6) {
2358                         n->ipe_family = AF_INET6;
2359                         n->ipe_addr = a->al_i6addr;
2360                         n->ipe_mask = a->al_i6mask;
2361                 } else {
2362                         n->ipe_family = AF_INET;
2363                         n->ipe_addr.in4_addr = a->al_1;
2364                         n->ipe_mask.in4_addr = a->al_2;
2365                 }
2366                 n->ipe_value = 0;
2367                 if (a->al_next != NULL) {
2368                         n->ipe_next = calloc(1, sizeof(*n));
2369                         n = n->ipe_next;
2370                 }
2371         }
2372
2373         bzero((char *)&iph, sizeof(iph));
2374         iph.iph_unit = IPL_LOGIPF;
2375         iph.iph_type = IPHASH_LOOKUP;
2376         *iph.iph_name = '\0';
2377
2378         if (load_hash(&iph, top, ipfioctls[IPL_LOGLOOKUP]) == 0)
2379                 sscanf(iph.iph_name, "%u", &num);
2380         else
2381                 num = 0;
2382
2383         while ((n = top) != NULL) {
2384                 top = n->ipe_next;
2385                 free(n);
2386         }
2387         return num;
2388 }
2389
2390
2391 int ipf_addrule(fd, ioctlfunc, ptr)
2392 int fd;
2393 ioctlfunc_t ioctlfunc;
2394 void *ptr;
2395 {
2396         ioctlcmd_t add, del;
2397         frentry_t *fr;
2398         ipfobj_t obj;
2399
2400         if (ptr == NULL)
2401                 return 0;
2402
2403         fr = ptr;
2404         add = 0;
2405         del = 0;
2406
2407         bzero((char *)&obj, sizeof(obj));
2408         obj.ipfo_rev = IPFILTER_VERSION;
2409         obj.ipfo_size = fr->fr_size;
2410         obj.ipfo_type = IPFOBJ_FRENTRY;
2411         obj.ipfo_ptr = ptr;
2412
2413         if ((opts & OPT_DONOTHING) != 0)
2414                 fd = -1;
2415
2416         if (opts & OPT_ZERORULEST) {
2417                 add = SIOCZRLST;
2418         } else if (opts & OPT_INACTIVE) {
2419                 add = (u_int)fr->fr_hits ? SIOCINIFR :
2420                                            SIOCADIFR;
2421                 del = SIOCRMIFR;
2422         } else {
2423                 add = (u_int)fr->fr_hits ? SIOCINAFR :
2424                                            SIOCADAFR;
2425                 del = SIOCRMAFR;
2426         }
2427
2428         if ((opts & OPT_OUTQUE) != 0)
2429                 fr->fr_flags |= FR_OUTQUE;
2430         if (fr->fr_hits)
2431                 fr->fr_hits--;
2432         if ((opts & OPT_VERBOSE) != 0)
2433                 printfr(fr, ioctlfunc);
2434
2435         if ((opts & OPT_DEBUG) != 0) {
2436                 binprint(fr, sizeof(*fr));
2437                 if (fr->fr_data != NULL)
2438                         binprint(fr->fr_data, fr->fr_dsize);
2439         }
2440
2441         if ((opts & OPT_ZERORULEST) != 0) {
2442                 if ((*ioctlfunc)(fd, add, (void *)&obj) == -1) {
2443                         if ((opts & OPT_DONOTHING) == 0) {
2444                                 char msg[80];
2445
2446                                 sprintf(msg, "%d:ioctl(zero rule)",
2447                                         fr->fr_flineno);
2448                                 return ipf_perror_fd(fd, ioctlfunc, msg);
2449                         }
2450                 } else {
2451 #ifdef  USE_QUAD_T
2452                         printf("hits %qd bytes %qd ",
2453                                 (long long)fr->fr_hits,
2454                                 (long long)fr->fr_bytes);
2455 #else
2456                         printf("hits %ld bytes %ld ",
2457                                 fr->fr_hits, fr->fr_bytes);
2458 #endif
2459                         printfr(fr, ioctlfunc);
2460                 }
2461         } else if ((opts & OPT_REMOVE) != 0) {
2462                 if ((*ioctlfunc)(fd, del, (void *)&obj) == -1) {
2463                         if ((opts & OPT_DONOTHING) == 0) {
2464                                 char msg[80];
2465
2466                                 sprintf(msg, "%d:ioctl(delete rule)",
2467                                         fr->fr_flineno);
2468                                 return ipf_perror_fd(fd, ioctlfunc, msg);
2469                         }
2470                 }
2471         } else {
2472                 if ((*ioctlfunc)(fd, add, (void *)&obj) == -1) {
2473                         if ((opts & OPT_DONOTHING) == 0) {
2474                                 char msg[80];
2475
2476                                 sprintf(msg, "%d:ioctl(add/insert rule)",
2477                                         fr->fr_flineno);
2478                                 return ipf_perror_fd(fd, ioctlfunc, msg);
2479                         }
2480                 }
2481         }
2482         return 0;
2483 }
2484
2485 static void setsyslog()
2486 {
2487         yysetdict(logwords);
2488         yybreakondot = 1;
2489 }
2490
2491
2492 static void unsetsyslog()
2493 {
2494         yyresetdict();
2495         yybreakondot = 0;
2496 }
2497
2498
2499 static void fillgroup(fr)
2500 frentry_t *fr;
2501 {
2502         frentry_t *f;
2503
2504         for (f = frold; f != NULL; f = f->fr_next) {
2505                 if (f->fr_grhead == -1 && fr->fr_group == -1)
2506                         break;
2507                 if (f->fr_grhead == -1 || fr->fr_group == -1)
2508                         continue;
2509                 if (strcmp(f->fr_names + f->fr_grhead,
2510                            fr->fr_names + fr->fr_group) == 0)
2511                         break;
2512         }
2513
2514         if (f == NULL)
2515                 return;
2516
2517         /*
2518          * Only copy down matching fields if the rules are of the same type
2519          * and are of ipf type.   The only fields that are copied are those
2520          * that impact the rule parsing itself, eg. need for knowing what the
2521          * protocol should be for rules with port comparisons in them.
2522          */
2523         if (f->fr_type != fr->fr_type || f->fr_type != FR_T_IPF)
2524                 return;
2525
2526         if (fr->fr_family == 0 && f->fr_family != 0)
2527                 fr->fr_family = f->fr_family;
2528
2529         if (fr->fr_mproto == 0 && f->fr_mproto != 0)
2530                 fr->fr_mproto = f->fr_mproto;
2531         if (fr->fr_proto == 0 && f->fr_proto != 0)
2532                 fr->fr_proto = f->fr_proto;
2533
2534         if ((fr->fr_mproto == 0) && ((fr->fr_flx & FI_TCPUDP) == 0) &&
2535             ((f->fr_flx & FI_TCPUDP) != 0)) {
2536                 fr->fr_flx |= FI_TCPUDP;
2537                 fr->fr_mflx |= FI_TCPUDP;
2538         }
2539 }
2540
2541
2542 static void doipfexpr(line)
2543 char *line;
2544 {
2545         int *array;
2546         char *error;
2547
2548         array = parseipfexpr(line, &error);
2549         if (array == NULL) {
2550                 fprintf(stderr, "%s:", error);
2551                 yyerror("error parsing ipf matching expression");
2552                 return;
2553         }
2554
2555         fr->fr_type = FR_T_IPFEXPR;
2556         fr->fr_data = array;
2557         fr->fr_dsize = array[0] * sizeof(*array);
2558 }
2559
2560
2561 static void do_tuneint(varname, value)
2562 char *varname;
2563 int value;
2564 {
2565         char buffer[80];
2566
2567         strncpy(buffer, varname, 60);
2568         buffer[59] = '\0';
2569         strcat(buffer, "=");
2570         sprintf(buffer, "%u", value);
2571         ipf_dotuning(ipffd, buffer, ioctl);
2572 }
2573
2574
2575 static void do_tunestr(varname, value)
2576 char *varname, *value;
2577 {
2578
2579         if (!strcasecmp(value, "true")) {
2580                 do_tuneint(varname, 1);
2581         } else if (!strcasecmp(value, "false")) {
2582                 do_tuneint(varname, 0);
2583         } else {
2584                 yyerror("did not find true/false where expected");
2585         }
2586 }
2587
2588
2589 static void setifname(frp, idx, name)
2590 frentry_t **frp;
2591 int idx;
2592 char *name;
2593 {
2594         int pos;
2595
2596         pos = addname(frp, name);
2597         if (pos == -1)
2598                 return;
2599         (*frp)->fr_ifnames[idx] = pos;
2600 }
2601
2602
2603 static int addname(frp, name)
2604 frentry_t **frp;
2605 char *name;
2606 {
2607         frentry_t *f;
2608         int nlen;
2609         int pos;
2610
2611         nlen = strlen(name) + 1;
2612         f = realloc(*frp, (*frp)->fr_size + nlen);
2613         if (*frp == frc)
2614                 frc = f;
2615         *frp = f;
2616         if (f == NULL)
2617                 return -1;
2618         if (f->fr_pnext != NULL)
2619                 *f->fr_pnext = f;
2620         f->fr_size += nlen;
2621         pos = f->fr_namelen;
2622         f->fr_namelen += nlen;
2623         strcpy(f->fr_names + pos, name);
2624         f->fr_names[f->fr_namelen] = '\0';
2625         return pos;
2626 }
2627
2628
2629 static frentry_t *allocfr()
2630 {
2631         frentry_t *fr;
2632
2633         fr = calloc(1, sizeof(*fr));
2634         if (fr != NULL) {
2635                 fr->fr_size = sizeof(*fr);
2636                 fr->fr_comment = -1;
2637                 fr->fr_group = -1;
2638                 fr->fr_grhead = -1;
2639                 fr->fr_icmphead = -1;
2640                 fr->fr_ifnames[0] = -1;
2641                 fr->fr_ifnames[1] = -1;
2642                 fr->fr_ifnames[2] = -1;
2643                 fr->fr_ifnames[3] = -1;
2644                 fr->fr_tif.fd_name = -1;
2645                 fr->fr_rif.fd_name = -1;
2646                 fr->fr_dif.fd_name = -1;
2647         }
2648         return fr;
2649 }
2650
2651
2652 static void setgroup(frp, name)
2653 frentry_t **frp;
2654 char *name;
2655 {
2656         int pos;
2657
2658         pos = addname(frp, name);
2659         if (pos == -1)
2660                 return;
2661         (*frp)->fr_group = pos;
2662 }
2663
2664
2665 static void setgrhead(frp, name)
2666 frentry_t **frp;
2667 char *name;
2668 {
2669         int pos;
2670
2671         pos = addname(frp, name);
2672         if (pos == -1)
2673                 return;
2674         (*frp)->fr_grhead = pos;
2675 }
2676
2677
2678 static void seticmphead(frp, name)
2679 frentry_t **frp;
2680 char *name;
2681 {
2682         int pos;
2683
2684         pos = addname(frp, name);
2685         if (pos == -1)
2686                 return;
2687         (*frp)->fr_icmphead = pos;
2688 }
2689
2690
2691 static void
2692 build_dstaddr_af(fp, ptr)
2693         frentry_t *fp;
2694         void *ptr;
2695 {
2696         struct ipp_s *ipp = ptr;
2697         frentry_t *f = fp;
2698
2699         if (f->fr_family != AF_UNSPEC && ipp->f == AF_UNSPEC) {
2700                 ipp->f = f->fr_family;
2701                 ipp->v = f->fr_ip.fi_v;
2702         }
2703         if (ipp->f == AF_INET)
2704                 ipp->v = 4;
2705         else if (ipp->f == AF_INET6)
2706                 ipp->v = 6;
2707
2708         for (; f != NULL; f = f->fr_next) {
2709                 f->fr_ip.fi_dst = ipp->a;
2710                 f->fr_mip.fi_dst = ipp->m;
2711                 f->fr_family = ipp->f;
2712                 f->fr_ip.fi_v = ipp->v;
2713                 f->fr_mip.fi_v = 0xf;
2714                 f->fr_datype = ipp->type;
2715                 if (ipp->ifpos != -1)
2716                         f->fr_ipf->fri_difpidx = ipp->ifpos;
2717         }
2718         fr = NULL;
2719 }
2720
2721
2722 static void
2723 build_srcaddr_af(fp, ptr)
2724         frentry_t *fp;
2725         void *ptr;
2726 {
2727         struct ipp_s *ipp = ptr;
2728         frentry_t *f = fp;
2729
2730         if (f->fr_family != AF_UNSPEC && ipp->f == AF_UNSPEC) {
2731                 ipp->f = f->fr_family;
2732                 ipp->v = f->fr_ip.fi_v;
2733         }
2734         if (ipp->f == AF_INET)
2735                 ipp->v = 4;
2736         else if (ipp->f == AF_INET6)
2737                 ipp->v = 6;
2738
2739         for (; f != NULL; f = f->fr_next) {
2740                 f->fr_ip.fi_src = ipp->a;
2741                 f->fr_mip.fi_src = ipp->m;
2742                 f->fr_family = ipp->f;
2743                 f->fr_ip.fi_v = ipp->v;
2744                 f->fr_mip.fi_v = 0xf;
2745                 f->fr_satype = ipp->type;
2746                 f->fr_ipf->fri_sifpidx = ipp->ifpos;
2747         }
2748         fr = NULL;
2749 }