contrib/libpcap-0.9/grammar.y

   1 %{
   2 /*
   3  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that: (1) source code distributions
   8  * retain the above copyright notice and this paragraph in its entirety, (2)
   9  * distributions including binary code include the above copyright notice and
  10  * this paragraph in its entirety in the documentation or other materials
  11  * provided with the distribution, and (3) all advertising materials mentioning
  12  * features or use of this software display the following acknowledgement:
  13  * ``This product includes software developed by the University of California,
  14  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  15  * the University nor the names of its contributors may be used to endorse
  16  * or promote products derived from this software without specific prior
  17  * written permission.
  18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  19  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  20  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  21  *
  22  */
  23 #ifndef lint
  24 static const char rcsid[] _U_ =
  25     "@(#) $Header: /tcpdump/master/libpcap/grammar.y,v 1.86.2.9 2007/09/12 19:17:25 guy Exp $ (LBL)";
  26 #endif
  27
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 #ifdef WIN32
  33 #include <pcap-stdinc.h>
  34 #else /* WIN32 */
  35 #include <sys/types.h>
  36 #include <sys/socket.h>
  37 #endif /* WIN32 */
  38
  39 #include <stdlib.h>
  40
  41 #ifndef WIN32
  42 #if __STDC__
  43 struct mbuf;
  44 struct rtentry;
  45 #endif
  46
  47 #include <netinet/in.h>
  48 #endif /* WIN32 */
  49
  50 #include <stdio.h>
  51
  52 #include "pcap-int.h"
  53
  54 #include "gencode.h"
  55 #ifdef HAVE_NET_PFVAR_H
  56 #include <net/if.h>
  57 #include <net/if_var.h>
  58 #include <net/pf/pfvar.h>
  59 #include <net/pf/if_pflog.h>
  60 #endif
  61 #include <pcap-namedb.h>
  62
  63 #include <netproto/802_11/ieee80211.h>
  64
  65 #ifdef HAVE_OS_PROTO_H
  66 #include "os-proto.h"
  67 #endif
  68
  69 #define QSET(q, p, d, a) (q).proto = (p),\
  70                          (q).dir = (d),\
  71                          (q).addr = (a)
  72
  73 static const char *ieee80211_mgt_names[] = IEEE80211_MGT_SUBTYPE_NAMES;
  74 static const char *ieee80211_ctl_names[] = IEEE80211_CTL_SUBTYPE_NAMES;
  75 static const char *ieee80211_data_names[] = IEEE80211_DATA_SUBTYPE_NAMES;
  76
  77 int n_errors = 0;
  78
  79 static struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF };
  80
  81 static void
  82 yyerror(const char *msg)
  83 {
  84         ++n_errors;
  85         bpf_error("%s", msg);
  86         /* NOTREACHED */
  87 }
  88
  89 #ifndef YYBISON
  90 int yyparse(void);
  91
  92 int
  93 pcap_parse()
  94 {
  95         return (yyparse());
  96 }
  97 #endif
  98
  99 #ifdef HAVE_NET_PFVAR_H
 100 static int
 101 pfreason_to_num(const char *reason)
 102 {
 103         const char *reasons[] = PFRES_NAMES;
 104         int i;
 105
 106         for (i = 0; reasons[i]; i++) {
 107                 if (pcap_strcasecmp(reason, reasons[i]) == 0)
 108                         return (i);
 109         }
 110         bpf_error("unknown PF reason");
 111         /*NOTREACHED*/
 112 }
 113
 114 static int
 115 pfaction_to_num(const char *action)
 116 {
 117         if (pcap_strcasecmp(action, "pass") == 0 ||
 118             pcap_strcasecmp(action, "accept") == 0)
 119                 return (PF_PASS);
 120         else if (pcap_strcasecmp(action, "drop") == 0 ||
 121                 pcap_strcasecmp(action, "block") == 0)
 122                 return (PF_DROP);
 123         else {
 124                 bpf_error("unknown PF action");
 125                 /*NOTREACHED*/
 126         }
 127 }
 128 #else /* !HAVE_NET_PFVAR_H */
 129 static int
 130 pfreason_to_num(const char *reason)
 131 {
 132         bpf_error("libpcap was compiled on a machine without pf support");
 133         /*NOTREACHED*/
 134 }
 135
 136 static int
 137 pfaction_to_num(const char *action)
 138 {
 139         bpf_error("libpcap was compiled on a machine without pf support");
 140         /*NOTREACHED*/
 141 }
 142 #endif /* HAVE_NET_PFVAR_H */
 143 %}
 144
 145 %union {
 146         int i;
 147         bpf_u_int32 h;
 148         u_char *e;
 149         char *s;
 150         struct stmt *stmt;
 151         struct arth *a;
 152         struct {
 153                 struct qual q;
 154                 int atmfieldtype;
 155                 int mtp3fieldtype;
 156                 struct block *b;
 157         } blk;
 158         struct block *rblk;
 159 }
 160
 161 %type   <blk>   expr id nid pid term rterm qid
 162 %type   <blk>   head
 163 %type   <i>     pqual dqual aqual ndaqual
 164 %type   <a>     arth narth
 165 %type   <i>     byteop pname pnum relop irelop
 166 %type   <blk>   and or paren not null prog
 167 %type   <rblk>  other pfvar p80211
 168 %type   <i>     atmtype atmmultitype
 169 %type   <blk>   atmfield
 170 %type   <blk>   atmfieldvalue atmvalue atmlistvalue
 171 %type   <i>     mtp2type
 172 %type   <blk>   mtp3field
 173 %type   <blk>   mtp3fieldvalue mtp3value mtp3listvalue
 174
 175
 176 %token  DST SRC HOST GATEWAY
 177 %token  NET NETMASK PORT PORTRANGE LESS GREATER PROTO PROTOCHAIN CBYTE
 178 %token  ARP RARP IP SCTP TCP UDP ICMP IGMP IGRP PIM VRRP
 179 %token  ATALK AARP DECNET LAT SCA MOPRC MOPDL
 180 %token  TK_BROADCAST TK_MULTICAST
 181 %token  NUM INBOUND OUTBOUND
 182 %token  PF_IFNAME PF_RSET PF_RNR PF_SRNR PF_REASON PF_ACTION
 183 %token  LINK
 184 %token  GEQ LEQ NEQ
 185 %token  ID EID HID HID6 AID
 186 %token  LSH RSH
 187 %token  LEN
 188 %token  IPV6 ICMPV6 AH ESP
 189 %token  VLAN MPLS
 190 %token  PPPOED PPPOES
 191 %token  ISO ESIS CLNP ISIS L1 L2 IIH LSP SNP CSNP PSNP
 192 %token  STP
 193 %token  IPX
 194 %token  NETBEUI
 195 %token  LANE LLC METAC BCC SC ILMIC OAMF4EC OAMF4SC
 196 %token  OAM OAMF4 CONNECTMSG METACONNECT
 197 %token  VPI VCI
 198 %token  RADIO
 199 %token  FISU LSSU MSU
 200 %token  SIO OPC DPC SLS
 201 %token  TYPE SUBTYPE
 202
 203 %type   <s> ID
 204 %type   <e> EID
 205 %type   <e> AID
 206 %type   <s> HID HID6
 207 %type   <i> NUM action reason type subtype type_subtype
 208
 209 %left OR AND
 210 %nonassoc  '!'
 211 %left '|'
 212 %left '&'
 213 %left LSH RSH
 214 %left '+' '-'
 215 %left '*' '/'
 216 %nonassoc UMINUS
 217 %%
 218 prog:     null expr
 219 {
 220         finish_parse($2.b);
 221 }
 222         | null
 223         ;
 224 null:     /* null */            { $$.q = qerr; }
 225         ;
 226 expr:     term
 227         | expr and term         { gen_and($1.b, $3.b); $$ = $3; }
 228         | expr and id           { gen_and($1.b, $3.b); $$ = $3; }
 229         | expr or term          { gen_or($1.b, $3.b); $$ = $3; }
 230         | expr or id            { gen_or($1.b, $3.b); $$ = $3; }
 231         ;
 232 and:      AND                   { $$ = $<blk>0; }
 233         ;
 234 or:       OR                    { $$ = $<blk>0; }
 235         ;
 236 id:       nid
 237         | pnum                  { $$.b = gen_ncode(NULL, (bpf_u_int32)$1,
 238                                                    $$.q = $<blk>0.q); }
 239         | paren pid ')'         { $$ = $2; }
 240         ;
 241 nid:      ID                    { $$.b = gen_scode($1, $$.q = $<blk>0.q); }
 242         | HID '/' NUM           { $$.b = gen_mcode($1, NULL, $3,
 243                                     $$.q = $<blk>0.q); }
 244         | HID NETMASK HID       { $$.b = gen_mcode($1, $3, 0,
 245                                     $$.q = $<blk>0.q); }
 246         | HID                   {
 247                                   /* Decide how to parse HID based on proto */
 248                                   $$.q = $<blk>0.q;
 249                                   $$.b = gen_ncode($1, 0, $$.q);
 250                                 }
 251         | HID6 '/' NUM          {
 252 #ifdef INET6
 253                                   $$.b = gen_mcode6($1, NULL, $3,
 254                                     $$.q = $<blk>0.q);
 255 #else
 256                                   bpf_error("'ip6addr/prefixlen' not supported "
 257                                         "in this configuration");
 258 #endif /*INET6*/
 259                                 }
 260         | HID6                  {
 261 #ifdef INET6
 262                                   $$.b = gen_mcode6($1, 0, 128,
 263                                     $$.q = $<blk>0.q);
 264 #else
 265                                   bpf_error("'ip6addr' not supported "
 266                                         "in this configuration");
 267 #endif /*INET6*/
 268                                 }
 269         | EID                   {
 270                                   $$.b = gen_ecode($1, $$.q = $<blk>0.q);
 271                                   /*
 272                                    * $1 was allocated by "pcap_ether_aton()",
 273                                    * so we must free it now that we're done
 274                                    * with it.
 275                                    */
 276                                   free($1);
 277                                 }
 278         | AID                   {
 279                                   $$.b = gen_acode($1, $$.q = $<blk>0.q);
 280                                   /*
 281                                    * $1 was allocated by "pcap_ether_aton()",
 282                                    * so we must free it now that we're done
 283                                    * with it.
 284                                    */
 285                                   free($1);
 286                                 }
 287         | not id                { gen_not($2.b); $$ = $2; }
 288         ;
 289 not:      '!'                   { $$ = $<blk>0; }
 290         ;
 291 paren:    '('                   { $$ = $<blk>0; }
 292         ;
 293 pid:      nid
 294         | qid and id            { gen_and($1.b, $3.b); $$ = $3; }
 295         | qid or id             { gen_or($1.b, $3.b); $$ = $3; }
 296         ;
 297 qid:      pnum                  { $$.b = gen_ncode(NULL, (bpf_u_int32)$1,
 298                                                    $$.q = $<blk>0.q); }
 299         | pid
 300         ;
 301 term:     rterm
 302         | not term              { gen_not($2.b); $$ = $2; }
 303         ;
 304 head:     pqual dqual aqual     { QSET($$.q, $1, $2, $3); }
 305         | pqual dqual           { QSET($$.q, $1, $2, Q_DEFAULT); }
 306         | pqual aqual           { QSET($$.q, $1, Q_DEFAULT, $2); }
 307         | pqual PROTO           { QSET($$.q, $1, Q_DEFAULT, Q_PROTO); }
 308         | pqual PROTOCHAIN      { QSET($$.q, $1, Q_DEFAULT, Q_PROTOCHAIN); }
 309         | pqual ndaqual         { QSET($$.q, $1, Q_DEFAULT, $2); }
 310         ;
 311 rterm:    head id               { $$ = $2; }
 312         | paren expr ')'        { $$.b = $2.b; $$.q = $1.q; }
 313         | pname                 { $$.b = gen_proto_abbrev($1); $$.q = qerr; }
 314         | arth relop arth       { $$.b = gen_relation($2, $1, $3, 0);
 315                                   $$.q = qerr; }
 316         | arth irelop arth      { $$.b = gen_relation($2, $1, $3, 1);
 317                                   $$.q = qerr; }
 318         | other                 { $$.b = $1; $$.q = qerr; }
 319         | atmtype               { $$.b = gen_atmtype_abbrev($1); $$.q = qerr; }
 320         | atmmultitype          { $$.b = gen_atmmulti_abbrev($1); $$.q = qerr; }
 321         | atmfield atmvalue     { $$.b = $2.b; $$.q = qerr; }
 322         | mtp2type              { $$.b = gen_mtp2type_abbrev($1); $$.q = qerr; }
 323         | mtp3field mtp3value   { $$.b = $2.b; $$.q = qerr; }
 324         ;
 325 /* protocol level qualifiers */
 326 pqual:    pname
 327         |                       { $$ = Q_DEFAULT; }
 328         ;
 329 /* 'direction' qualifiers */
 330 dqual:    SRC                   { $$ = Q_SRC; }
 331         | DST                   { $$ = Q_DST; }
 332         | SRC OR DST            { $$ = Q_OR; }
 333         | DST OR SRC            { $$ = Q_OR; }
 334         | SRC AND DST           { $$ = Q_AND; }
 335         | DST AND SRC           { $$ = Q_AND; }
 336         ;
 337 /* address type qualifiers */
 338 aqual:    HOST                  { $$ = Q_HOST; }
 339         | NET                   { $$ = Q_NET; }
 340         | PORT                  { $$ = Q_PORT; }
 341         | PORTRANGE             { $$ = Q_PORTRANGE; }
 342         ;
 343 /* non-directional address type qualifiers */
 344 ndaqual:  GATEWAY               { $$ = Q_GATEWAY; }
 345         ;
 346 pname:    LINK                  { $$ = Q_LINK; }
 347         | IP                    { $$ = Q_IP; }
 348         | ARP                   { $$ = Q_ARP; }
 349         | RARP                  { $$ = Q_RARP; }
 350         | SCTP                  { $$ = Q_SCTP; }
 351         | TCP                   { $$ = Q_TCP; }
 352         | UDP                   { $$ = Q_UDP; }
 353         | ICMP                  { $$ = Q_ICMP; }
 354         | IGMP                  { $$ = Q_IGMP; }
 355         | IGRP                  { $$ = Q_IGRP; }
 356         | PIM                   { $$ = Q_PIM; }
 357         | VRRP                  { $$ = Q_VRRP; }
 358         | ATALK                 { $$ = Q_ATALK; }
 359         | AARP                  { $$ = Q_AARP; }
 360         | DECNET                { $$ = Q_DECNET; }
 361         | LAT                   { $$ = Q_LAT; }
 362         | SCA                   { $$ = Q_SCA; }
 363         | MOPDL                 { $$ = Q_MOPDL; }
 364         | MOPRC                 { $$ = Q_MOPRC; }
 365         | IPV6                  { $$ = Q_IPV6; }
 366         | ICMPV6                { $$ = Q_ICMPV6; }
 367         | AH                    { $$ = Q_AH; }
 368         | ESP                   { $$ = Q_ESP; }
 369         | ISO                   { $$ = Q_ISO; }
 370         | ESIS                  { $$ = Q_ESIS; }
 371         | ISIS                  { $$ = Q_ISIS; }
 372         | L1                    { $$ = Q_ISIS_L1; }
 373         | L2                    { $$ = Q_ISIS_L2; }
 374         | IIH                   { $$ = Q_ISIS_IIH; }
 375         | LSP                   { $$ = Q_ISIS_LSP; }
 376         | SNP                   { $$ = Q_ISIS_SNP; }
 377         | PSNP                  { $$ = Q_ISIS_PSNP; }
 378         | CSNP                  { $$ = Q_ISIS_CSNP; }
 379         | CLNP                  { $$ = Q_CLNP; }
 380         | STP                   { $$ = Q_STP; }
 381         | IPX                   { $$ = Q_IPX; }
 382         | NETBEUI               { $$ = Q_NETBEUI; }
 383         | RADIO                 { $$ = Q_RADIO; }
 384         ;
 385 other:    pqual TK_BROADCAST    { $$ = gen_broadcast($1); }
 386         | pqual TK_MULTICAST    { $$ = gen_multicast($1); }
 387         | LESS NUM              { $$ = gen_less($2); }
 388         | GREATER NUM           { $$ = gen_greater($2); }
 389         | CBYTE NUM byteop NUM  { $$ = gen_byteop($3, $2, $4); }
 390         | INBOUND               { $$ = gen_inbound(0); }
 391         | OUTBOUND              { $$ = gen_inbound(1); }
 392         | VLAN pnum             { $$ = gen_vlan($2); }
 393         | VLAN                  { $$ = gen_vlan(-1); }
 394         | MPLS pnum             { $$ = gen_mpls($2); }
 395         | MPLS                  { $$ = gen_mpls(-1); }
 396         | PPPOED                { $$ = gen_pppoed(); }
 397         | PPPOES                { $$ = gen_pppoes(); }
 398         | pfvar                 { $$ = $1; }
 399         | pqual p80211          { $$ = $2; }
 400         ;
 401
 402 pfvar:    PF_IFNAME ID          { $$ = gen_pf_ifname($2); }
 403         | PF_RSET ID            { $$ = gen_pf_ruleset($2); }
 404         | PF_RNR NUM            { $$ = gen_pf_rnr($2); }
 405         | PF_SRNR NUM           { $$ = gen_pf_srnr($2); }
 406         | PF_REASON reason      { $$ = gen_pf_reason($2); }
 407         | PF_ACTION action      { $$ = gen_pf_action($2); }
 408         ;
 409
 410 p80211:   TYPE type SUBTYPE subtype
 411                                 { $$ = gen_p80211_type($2 | $4,
 412                                         IEEE80211_FC0_TYPE_MASK |
 413                                         IEEE80211_FC0_SUBTYPE_MASK);
 414                                 }
 415         | TYPE type             { $$ = gen_p80211_type($2,
 416                                         IEEE80211_FC0_TYPE_MASK);
 417                                 }
 418         | SUBTYPE type_subtype  { $$ = gen_p80211_type($2,
 419                                         IEEE80211_FC0_TYPE_MASK |
 420                                         IEEE80211_FC0_SUBTYPE_MASK);
 421                                 }
 422         ;
 423
 424 type:     NUM
 425         | ID                    { const char *names[] = IEEE80211_TYPE_NAMES;
 426                                   int i, lim;
 427                                   lim = (IEEE80211_FC0_TYPE_MASK >> IEEE80211_FC0_TYPE_SHIFT) + 1;
 428                                   for (i = 0; i < lim; ++i) {
 429                                         if (pcap_strcasecmp($1, names[i]) == 0) {
 430                                                 $$ = i << IEEE80211_FC0_TYPE_SHIFT;
 431                                                 break;
 432                                         }
 433                                   }
 434                                   if (i == lim)
 435                                         bpf_error("unknown 802.11 type name");
 436                                 }
 437         ;
 438
 439 subtype:  NUM
 440         | ID                    { const char **names;
 441                                   int i, lim;
 442                                   if ($<i>-1 == IEEE80211_FC0_TYPE_MGT)
 443                                         names = ieee80211_mgt_names;
 444                                   else if ($<i>-1 == IEEE80211_FC0_TYPE_CTL)
 445                                         names = ieee80211_ctl_names;
 446                                   else if ($<i>-1 == IEEE80211_FC0_TYPE_DATA)
 447                                         names = ieee80211_data_names;
 448                                   else
 449                                         bpf_error("unknown 802.11 type");
 450                                   lim = (IEEE80211_FC0_SUBTYPE_MASK >> IEEE80211_FC0_SUBTYPE_SHIFT) + 1;
 451                                   for (i = 0; i < lim; ++i) {
 452                                         if (pcap_strcasecmp($1, names[i]) == 0) {
 453                                                 $$ = i << IEEE80211_FC0_SUBTYPE_SHIFT;
 454                                                 break;
 455                                         }
 456                                   }
 457                                   if (i == lim)
 458                                         bpf_error("unknown 802.11 subtype name");
 459                                 }
 460         ;
 461
 462 type_subtype:   ID              { const char **sub_names[] = {
 463                                         ieee80211_mgt_names,
 464                                         ieee80211_ctl_names,
 465                                         ieee80211_data_names
 466                                   };
 467                                   int i, j, lim, sub_lim;
 468                                   sub_lim = sizeof(sub_names) / sizeof(sub_names[0]);
 469                                   lim = (IEEE80211_FC0_SUBTYPE_MASK >> IEEE80211_FC0_SUBTYPE_SHIFT) + 1;
 470                                   for (i = 0; i < sub_lim; ++i) {
 471                                         const char **names = sub_names[i];
 472                                         for (j = 0; j < lim; ++j) {
 473                                                 if (pcap_strcasecmp($1, names[j]) == 0)
 474                                                         break;
 475                                         }
 476                                         if (j != lim) {
 477                                                 $$ = (i << IEEE80211_FC0_TYPE_SHIFT) |
 478                                                      (j << IEEE80211_FC0_SUBTYPE_SHIFT);
 479                                                 break;
 480                                         }
 481                                   }
 482                                   if (i == sub_lim)
 483                                         bpf_error("unknown 802.11 subtype name");
 484                                 }
 485                 ;
 486
 487 reason:   NUM                   { $$ = $1; }
 488         | ID                    { $$ = pfreason_to_num($1); }
 489         ;
 490
 491 action:   ID                    { $$ = pfaction_to_num($1); }
 492         ;
 493
 494 relop:    '>'                   { $$ = BPF_JGT; }
 495         | GEQ                   { $$ = BPF_JGE; }
 496         | '='                   { $$ = BPF_JEQ; }
 497         ;
 498 irelop:   LEQ                   { $$ = BPF_JGT; }
 499         | '<'                   { $$ = BPF_JGE; }
 500         | NEQ                   { $$ = BPF_JEQ; }
 501         ;
 502 arth:     pnum                  { $$ = gen_loadi($1); }
 503         | narth
 504         ;
 505 narth:    pname '[' arth ']'            { $$ = gen_load($1, $3, 1); }
 506         | pname '[' arth ':' NUM ']'    { $$ = gen_load($1, $3, $5); }
 507         | arth '+' arth                 { $$ = gen_arth(BPF_ADD, $1, $3); }
 508         | arth '-' arth                 { $$ = gen_arth(BPF_SUB, $1, $3); }
 509         | arth '*' arth                 { $$ = gen_arth(BPF_MUL, $1, $3); }
 510         | arth '/' arth                 { $$ = gen_arth(BPF_DIV, $1, $3); }
 511         | arth '&' arth                 { $$ = gen_arth(BPF_AND, $1, $3); }
 512         | arth '|' arth                 { $$ = gen_arth(BPF_OR, $1, $3); }
 513         | arth LSH arth                 { $$ = gen_arth(BPF_LSH, $1, $3); }
 514         | arth RSH arth                 { $$ = gen_arth(BPF_RSH, $1, $3); }
 515         | '-' arth %prec UMINUS         { $$ = gen_neg($2); }
 516         | paren narth ')'               { $$ = $2; }
 517         | LEN                           { $$ = gen_loadlen(); }
 518         ;
 519 byteop:   '&'                   { $$ = '&'; }
 520         | '|'                   { $$ = '|'; }
 521         | '<'                   { $$ = '<'; }
 522         | '>'                   { $$ = '>'; }
 523         | '='                   { $$ = '='; }
 524         ;
 525 pnum:     NUM
 526         | paren pnum ')'        { $$ = $2; }
 527         ;
 528 atmtype: LANE                   { $$ = A_LANE; }
 529         | LLC                   { $$ = A_LLC; }
 530         | METAC                 { $$ = A_METAC; }
 531         | BCC                   { $$ = A_BCC; }
 532         | OAMF4EC               { $$ = A_OAMF4EC; }
 533         | OAMF4SC               { $$ = A_OAMF4SC; }
 534         | SC                    { $$ = A_SC; }
 535         | ILMIC                 { $$ = A_ILMIC; }
 536         ;
 537 atmmultitype: OAM               { $$ = A_OAM; }
 538         | OAMF4                 { $$ = A_OAMF4; }
 539         | CONNECTMSG            { $$ = A_CONNECTMSG; }
 540         | METACONNECT           { $$ = A_METACONNECT; }
 541         ;
 542         /* ATM field types quantifier */
 543 atmfield: VPI                   { $$.atmfieldtype = A_VPI; }
 544         | VCI                   { $$.atmfieldtype = A_VCI; }
 545         ;
 546 atmvalue: atmfieldvalue
 547         | relop NUM             { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 0); }
 548         | irelop NUM            { $$.b = gen_atmfield_code($<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 1); }
 549         | paren atmlistvalue ')' { $$.b = $2.b; $$.q = qerr; }
 550         ;
 551 atmfieldvalue: NUM {
 552         $$.atmfieldtype = $<blk>0.atmfieldtype;
 553         if ($$.atmfieldtype == A_VPI ||
 554             $$.atmfieldtype == A_VCI)
 555                 $$.b = gen_atmfield_code($$.atmfieldtype, (bpf_int32) $1, BPF_JEQ, 0);
 556         }
 557         ;
 558 atmlistvalue: atmfieldvalue
 559         | atmlistvalue or atmfieldvalue { gen_or($1.b, $3.b); $$ = $3; }
 560         ;
 561         /* MTP2 types quantifier */
 562 mtp2type: FISU                  { $$ = M_FISU; }
 563         | LSSU                  { $$ = M_LSSU; }
 564         | MSU                   { $$ = M_MSU; }
 565         ;
 566         /* MTP3 field types quantifier */
 567 mtp3field: SIO                  { $$.mtp3fieldtype = M_SIO; }
 568         | OPC                   { $$.mtp3fieldtype = M_OPC; }
 569         | DPC                   { $$.mtp3fieldtype = M_DPC; }
 570         | SLS                   { $$.mtp3fieldtype = M_SLS; }
 571         ;
 572 mtp3value: mtp3fieldvalue
 573         | relop NUM             { $$.b = gen_mtp3field_code($<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 0); }
 574         | irelop NUM            { $$.b = gen_mtp3field_code($<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 1); }
 575         | paren mtp3listvalue ')' { $$.b = $2.b; $$.q = qerr; }
 576         ;
 577 mtp3fieldvalue: NUM {
 578         $$.mtp3fieldtype = $<blk>0.mtp3fieldtype;
 579         if ($$.mtp3fieldtype == M_SIO ||
 580             $$.mtp3fieldtype == M_OPC ||
 581             $$.mtp3fieldtype == M_DPC ||
 582             $$.mtp3fieldtype == M_SLS )
 583                 $$.b = gen_mtp3field_code($$.mtp3fieldtype, (u_int) $1, BPF_JEQ, 0);
 584         }
 585         ;
 586 mtp3listvalue: mtp3fieldvalue
 587         | mtp3listvalue or mtp3fieldvalue { gen_or($1.b, $3.b); $$ = $3; }
 588         ;
 589 %%