/*
* We want a reentrant parser.
*/
%pure-parser
/*
* We also want a reentrant scanner, so we have to pass the
* handle for the reentrant scanner to the parser, and the
* parser has to pass it to the lexical analyzer.
*
* We use void * rather than yyscan_t because, at least with some
* versions of Flex and Bison, if you use yyscan_t in %parse-param and
* %lex-param, you have to include scanner.h before grammar.h to get
* yyscan_t declared, and you have to include grammar.h before scanner.h
* to get YYSTYPE declared. Using void * breaks the cycle; the Flex
* documentation says yyscan_t is just a void *.
*/
%parse-param {void *yyscanner}
%lex-param {void *yyscanner}
/*
* And we need to pass the compiler state to the scanner.
*/
%parse-param {compiler_state_t *cstate}
%{
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $FreeBSD$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef _WIN32
#include <pcap-stdinc.h>
#else /* _WIN32 */
#include <sys/types.h>
#include <sys/socket.h>
#endif /* _WIN32 */
#include <stdlib.h>
#ifndef _WIN32
#if __STDC__
struct mbuf;
struct rtentry;
#endif
#include <netinet/in.h>
#include <arpa/inet.h>
#endif /* _WIN32 */
#include <stdio.h>
#include "pcap-int.h"
#include "gencode.h"
#include "grammar.h"
#include "scanner.h"
#ifdef HAVE_NET_PFVAR_H
#include <net/if.h>
#include <netpfil/pf/pf.h>
#include <net/if_pflog.h>
#endif
#include "llc.h"
#include "ieee80211.h"
#include <pcap/namedb.h>
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif
#define QSET(q, p, d, a) (q).proto = (p),\
(q).dir = (d),\
(q).addr = (a)
struct tok {
int v; /* value */
const char *s; /* string */
};
static const struct tok ieee80211_types[] = {
{ IEEE80211_FC0_TYPE_DATA, "data" },
{ IEEE80211_FC0_TYPE_MGT, "mgt" },
{ IEEE80211_FC0_TYPE_MGT, "management" },
{ IEEE80211_FC0_TYPE_CTL, "ctl" },
{ IEEE80211_FC0_TYPE_CTL, "control" },
{ 0, NULL }
};
static const struct tok ieee80211_mgt_subtypes[] = {
{ IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assocreq" },
{ IEEE80211_FC0_SUBTYPE_ASSOC_REQ, "assoc-req" },
{ IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assocresp" },
{ IEEE80211_FC0_SUBTYPE_ASSOC_RESP, "assoc-resp" },
{ IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassocreq" },
{ IEEE80211_FC0_SUBTYPE_REASSOC_REQ, "reassoc-req" },
{ IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassocresp" },
{ IEEE80211_FC0_SUBTYPE_REASSOC_RESP, "reassoc-resp" },
{ IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probereq" },
{ IEEE80211_FC0_SUBTYPE_PROBE_REQ, "probe-req" },
{ IEEE80211_FC0_SUBTYPE_PROBE_RESP, "proberesp" },
{ IEEE80211_FC0_SUBTYPE_PROBE_RESP, "probe-resp" },
{ IEEE80211_FC0_SUBTYPE_BEACON, "beacon" },
{ IEEE80211_FC0_SUBTYPE_ATIM, "atim" },
{ IEEE80211_FC0_SUBTYPE_DISASSOC, "disassoc" },
{ IEEE80211_FC0_SUBTYPE_DISASSOC, "disassociation" },
{ IEEE80211_FC0_SUBTYPE_AUTH, "auth" },
{ IEEE80211_FC0_SUBTYPE_AUTH, "authentication" },
{ IEEE80211_FC0_SUBTYPE_DEAUTH, "deauth" },
{ IEEE80211_FC0_SUBTYPE_DEAUTH, "deauthentication" },
{ 0, NULL }
};
static const struct tok ieee80211_ctl_subtypes[] = {
{ IEEE80211_FC0_SUBTYPE_PS_POLL, "ps-poll" },
{ IEEE80211_FC0_SUBTYPE_RTS, "rts" },
{ IEEE80211_FC0_SUBTYPE_CTS, "cts" },
{ IEEE80211_FC0_SUBTYPE_ACK, "ack" },
{ IEEE80211_FC0_SUBTYPE_CF_END, "cf-end" },
{ IEEE80211_FC0_SUBTYPE_CF_END_ACK, "cf-end-ack" },
{ 0, NULL }
};
static const struct tok ieee80211_data_subtypes[] = {
{ IEEE80211_FC0_SUBTYPE_DATA, "data" },
{ IEEE80211_FC0_SUBTYPE_CF_ACK, "data-cf-ack" },
{ IEEE80211_FC0_SUBTYPE_CF_POLL, "data-cf-poll" },
{ IEEE80211_FC0_SUBTYPE_CF_ACPL, "data-cf-ack-poll" },
{ IEEE80211_FC0_SUBTYPE_NODATA, "null" },
{ IEEE80211_FC0_SUBTYPE_NODATA_CF_ACK, "cf-ack" },
{ IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "cf-poll" },
{ IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "cf-ack-poll" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_DATA, "qos-data" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACK, "qos-data-cf-ack" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_POLL, "qos-data-cf-poll" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_CF_ACPL, "qos-data-cf-ack-poll" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA, "qos" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_POLL, "qos-cf-poll" },
{ IEEE80211_FC0_SUBTYPE_QOS|IEEE80211_FC0_SUBTYPE_NODATA_CF_ACPL, "qos-cf-ack-poll" },
{ 0, NULL }
};
static const struct tok llc_s_subtypes[] = {
{ LLC_RR, "rr" },
{ LLC_RNR, "rnr" },
{ LLC_REJ, "rej" },
{ 0, NULL }
};
static const struct tok llc_u_subtypes[] = {
{ LLC_UI, "ui" },
{ LLC_UA, "ua" },
{ LLC_DISC, "disc" },
{ LLC_DM, "dm" },
{ LLC_SABME, "sabme" },
{ LLC_TEST, "test" },
{ LLC_XID, "xid" },
{ LLC_FRMR, "frmr" },
{ 0, NULL }
};
struct type2tok {
int type;
const struct tok *tok;
};
static const struct type2tok ieee80211_type_subtypes[] = {
{ IEEE80211_FC0_TYPE_MGT, ieee80211_mgt_subtypes },
{ IEEE80211_FC0_TYPE_CTL, ieee80211_ctl_subtypes },
{ IEEE80211_FC0_TYPE_DATA, ieee80211_data_subtypes },
{ 0, NULL }
};
static int
str2tok(const char *str, const struct tok *toks)
{
int i;
for (i = 0; toks[i].s != NULL; i++) {
if (pcap_strcasecmp(toks[i].s, str) == 0)
return (toks[i].v);
}
return (-1);
}
static struct qual qerr = { Q_UNDEF, Q_UNDEF, Q_UNDEF, Q_UNDEF };
static void
yyerror(void *yyscanner, compiler_state_t *cstate, const char *msg)
{
bpf_syntax_error(cstate, msg);
/* NOTREACHED */
}
#ifdef HAVE_NET_PFVAR_H
static int
pfreason_to_num(compiler_state_t *cstate, const char *reason)
{
const char *reasons[] = PFRES_NAMES;
int i;
for (i = 0; reasons[i]; i++) {
if (pcap_strcasecmp(reason, reasons[i]) == 0)
return (i);
}
bpf_error(cstate, "unknown PF reason");
/*NOTREACHED*/
}
static int
pfaction_to_num(compiler_state_t *cstate, const char *action)
{
if (pcap_strcasecmp(action, "pass") == 0 ||
pcap_strcasecmp(action, "accept") == 0)
return (PF_PASS);
else if (pcap_strcasecmp(action, "drop") == 0 ||
pcap_strcasecmp(action, "block") == 0)
return (PF_DROP);
#if HAVE_PF_NAT_THROUGH_PF_NORDR
else if (pcap_strcasecmp(action, "rdr") == 0)
return (PF_RDR);
else if (pcap_strcasecmp(action, "nat") == 0)
return (PF_NAT);
else if (pcap_strcasecmp(action, "binat") == 0)
return (PF_BINAT);
else if (pcap_strcasecmp(action, "nordr") == 0)
return (PF_NORDR);
#endif
else {
bpf_error(cstate, "unknown PF action");
/*NOTREACHED*/
}
}
#else /* !HAVE_NET_PFVAR_H */
static int
pfreason_to_num(compiler_state_t *cstate, const char *reason)
{
bpf_error(cstate, "libpcap was compiled on a machine without pf support");
/*NOTREACHED*/
/* this is to make the VC compiler happy */
return -1;
}
static int
pfaction_to_num(compiler_state_t *cstate, const char *action)
{
bpf_error(cstate, "libpcap was compiled on a machine without pf support");
/*NOTREACHED*/
/* this is to make the VC compiler happy */
return -1;
}
#endif /* HAVE_NET_PFVAR_H */
%}
%union {
int i;
bpf_u_int32 h;
u_char *e;
char *s;
struct stmt *stmt;
struct arth *a;
struct {
struct qual q;
int atmfieldtype;
int mtp3fieldtype;
struct block *b;
} blk;
struct block *rblk;
}
%type <blk> expr id nid pid term rterm qid
%type <blk> head
%type <i> pqual dqual aqual ndaqual
%type <a> arth narth
%type <i> byteop pname pnum relop irelop
%type <blk> and or paren not null prog
%type <rblk> other pfvar p80211 pllc
%type <i> atmtype atmmultitype
%type <blk> atmfield
%type <blk> atmfieldvalue atmvalue atmlistvalue
%type <i> mtp2type
%type <blk> mtp3field
%type <blk> mtp3fieldvalue mtp3value mtp3listvalue
%token DST SRC HOST GATEWAY
%token NET NETMASK PORT PORTRANGE LESS GREATER PROTO PROTOCHAIN CBYTE
%token ARP RARP IP SCTP TCP UDP ICMP IGMP IGRP PIM VRRP CARP
%token ATALK AARP DECNET LAT SCA MOPRC MOPDL
%token TK_BROADCAST TK_MULTICAST
%token NUM INBOUND OUTBOUND
%token PF_IFNAME PF_RSET PF_RNR PF_SRNR PF_REASON PF_ACTION
%token TYPE SUBTYPE DIR ADDR1 ADDR2 ADDR3 ADDR4 RA TA
%token LINK
%token GEQ LEQ NEQ
%token ID EID HID HID6 AID
%token LSH RSH
%token LEN
%token IPV6 ICMPV6 AH ESP
%token VLAN MPLS
%token PPPOED PPPOES GENEVE
%token ISO ESIS CLNP ISIS L1 L2 IIH LSP SNP CSNP PSNP
%token STP
%token IPX
%token NETBEUI
%token LANE LLC METAC BCC SC ILMIC OAMF4EC OAMF4SC
%token OAM OAMF4 CONNECTMSG METACONNECT
%token VPI VCI
%token RADIO
%token FISU LSSU MSU HFISU HLSSU HMSU
%token SIO OPC DPC SLS HSIO HOPC HDPC HSLS
%type <s> ID
%type <e> EID
%type <e> AID
%type <s> HID HID6
%type <i> NUM action reason type subtype type_subtype dir
%left OR AND
%nonassoc '!'
%left '|'
%left '&'
%left LSH RSH
%left '+' '-'
%left '*' '/'
%nonassoc UMINUS
%%
prog: null expr
{
finish_parse(cstate, $2.b);
}
| null
;
null: /* null */ { $$.q = qerr; }
;
expr: term
| expr and term { gen_and($1.b, $3.b); $$ = $3; }
| expr and id { gen_and($1.b, $3.b); $$ = $3; }
| expr or term { gen_or($1.b, $3.b); $$ = $3; }
| expr or id { gen_or($1.b, $3.b); $$ = $3; }
;
and: AND { $$ = $<blk>0; }
;
or: OR { $$ = $<blk>0; }
;
id: nid
| pnum { $$.b = gen_ncode(cstate, NULL, (bpf_u_int32)$1,
$$.q = $<blk>0.q); }
| paren pid ')' { $$ = $2; }
;
nid: ID { $$.b = gen_scode(cstate, $1, $$.q = $<blk>0.q); }
| HID '/' NUM { $$.b = gen_mcode(cstate, $1, NULL, $3,
$$.q = $<blk>0.q); }
| HID NETMASK HID { $$.b = gen_mcode(cstate, $1, $3, 0,
$$.q = $<blk>0.q); }
| HID {
/* Decide how to parse HID based on proto */
$$.q = $<blk>0.q;
if ($$.q.addr == Q_PORT)
bpf_error(cstate, "'port' modifier applied to ip host");
else if ($$.q.addr == Q_PORTRANGE)
bpf_error(cstate, "'portrange' modifier applied to ip host");
else if ($$.q.addr == Q_PROTO)
bpf_error(cstate, "'proto' modifier applied to ip host");
else if ($$.q.addr == Q_PROTOCHAIN)
bpf_error(cstate, "'protochain' modifier applied to ip host");
$$.b = gen_ncode(cstate, $1, 0, $$.q);
}
| HID6 '/' NUM {
#ifdef INET6
$$.b = gen_mcode6(cstate, $1, NULL, $3,
$$.q = $<blk>0.q);
#else
bpf_error(cstate, "'ip6addr/prefixlen' not supported "
"in this configuration");
#endif /*INET6*/
}
| HID6 {
#ifdef INET6
$$.b = gen_mcode6(cstate, $1, 0, 128,
$$.q = $<blk>0.q);
#else
bpf_error(cstate, "'ip6addr' not supported "
"in this configuration");
#endif /*INET6*/
}
| EID {
$$.b = gen_ecode(cstate, $1, $$.q = $<blk>0.q);
/*
* $1 was allocated by "pcap_ether_aton()",
* so we must free it now that we're done
* with it.
*/
free($1);
}
| AID {
$$.b = gen_acode(cstate, $1, $$.q = $<blk>0.q);
/*
* $1 was allocated by "pcap_ether_aton()",
* so we must free it now that we're done
* with it.
*/
free($1);
}
| not id { gen_not($2.b); $$ = $2; }
;
not: '!' { $$ = $<blk>0; }
;
paren: '(' { $$ = $<blk>0; }
;
pid: nid
| qid and id { gen_and($1.b, $3.b); $$ = $3; }
| qid or id { gen_or($1.b, $3.b); $$ = $3; }
;
qid: pnum { $$.b = gen_ncode(cstate, NULL, (bpf_u_int32)$1,
$$.q = $<blk>0.q); }
| pid
;
term: rterm
| not term { gen_not($2.b); $$ = $2; }
;
head: pqual dqual aqual { QSET($$.q, $1, $2, $3); }
| pqual dqual { QSET($$.q, $1, $2, Q_DEFAULT); }
| pqual aqual { QSET($$.q, $1, Q_DEFAULT, $2); }
| pqual PROTO { QSET($$.q, $1, Q_DEFAULT, Q_PROTO); }
| pqual PROTOCHAIN { QSET($$.q, $1, Q_DEFAULT, Q_PROTOCHAIN); }
| pqual ndaqual { QSET($$.q, $1, Q_DEFAULT, $2); }
;
rterm: head id { $$ = $2; }
| paren expr ')' { $$.b = $2.b; $$.q = $1.q; }
| pname { $$.b = gen_proto_abbrev(cstate, $1); $$.q = qerr; }
| arth relop arth { $$.b = gen_relation(cstate, $2, $1, $3, 0);
$$.q = qerr; }
| arth irelop arth { $$.b = gen_relation(cstate, $2, $1, $3, 1);
$$.q = qerr; }
| other { $$.b = $1; $$.q = qerr; }
| atmtype { $$.b = gen_atmtype_abbrev(cstate, $1); $$.q = qerr; }
| atmmultitype { $$.b = gen_atmmulti_abbrev(cstate, $1); $$.q = qerr; }
| atmfield atmvalue { $$.b = $2.b; $$.q = qerr; }
| mtp2type { $$.b = gen_mtp2type_abbrev(cstate, $1); $$.q = qerr; }
| mtp3field mtp3value { $$.b = $2.b; $$.q = qerr; }
;
/* protocol level qualifiers */
pqual: pname
| { $$ = Q_DEFAULT; }
;
/* 'direction' qualifiers */
dqual: SRC { $$ = Q_SRC; }
| DST { $$ = Q_DST; }
| SRC OR DST { $$ = Q_OR; }
| DST OR SRC { $$ = Q_OR; }
| SRC AND DST { $$ = Q_AND; }
| DST AND SRC { $$ = Q_AND; }
| ADDR1 { $$ = Q_ADDR1; }
| ADDR2 { $$ = Q_ADDR2; }
| ADDR3 { $$ = Q_ADDR3; }
| ADDR4 { $$ = Q_ADDR4; }
| RA { $$ = Q_RA; }
| TA { $$ = Q_TA; }
;
/* address type qualifiers */
aqual: HOST { $$ = Q_HOST; }
| NET { $$ = Q_NET; }
| PORT { $$ = Q_PORT; }
| PORTRANGE { $$ = Q_PORTRANGE; }
;
/* non-directional address type qualifiers */
ndaqual: GATEWAY { $$ = Q_GATEWAY; }
;
pname: LINK { $$ = Q_LINK; }
| IP { $$ = Q_IP; }
| ARP { $$ = Q_ARP; }
| RARP { $$ = Q_RARP; }
| SCTP { $$ = Q_SCTP; }
| TCP { $$ = Q_TCP; }
| UDP { $$ = Q_UDP; }
| ICMP { $$ = Q_ICMP; }
| IGMP { $$ = Q_IGMP; }
| IGRP { $$ = Q_IGRP; }
| PIM { $$ = Q_PIM; }
| VRRP { $$ = Q_VRRP; }
| CARP { $$ = Q_CARP; }
| ATALK { $$ = Q_ATALK; }
| AARP { $$ = Q_AARP; }
| DECNET { $$ = Q_DECNET; }
| LAT { $$ = Q_LAT; }
| SCA { $$ = Q_SCA; }
| MOPDL { $$ = Q_MOPDL; }
| MOPRC { $$ = Q_MOPRC; }
| IPV6 { $$ = Q_IPV6; }
| ICMPV6 { $$ = Q_ICMPV6; }
| AH { $$ = Q_AH; }
| ESP { $$ = Q_ESP; }
| ISO { $$ = Q_ISO; }
| ESIS { $$ = Q_ESIS; }
| ISIS { $$ = Q_ISIS; }
| L1 { $$ = Q_ISIS_L1; }
| L2 { $$ = Q_ISIS_L2; }
| IIH { $$ = Q_ISIS_IIH; }
| LSP { $$ = Q_ISIS_LSP; }
| SNP { $$ = Q_ISIS_SNP; }
| PSNP { $$ = Q_ISIS_PSNP; }
| CSNP { $$ = Q_ISIS_CSNP; }
| CLNP { $$ = Q_CLNP; }
| STP { $$ = Q_STP; }
| IPX { $$ = Q_IPX; }
| NETBEUI { $$ = Q_NETBEUI; }
| RADIO { $$ = Q_RADIO; }
;
other: pqual TK_BROADCAST { $$ = gen_broadcast(cstate, $1); }
| pqual TK_MULTICAST { $$ = gen_multicast(cstate, $1); }
| LESS NUM { $$ = gen_less(cstate, $2); }
| GREATER NUM { $$ = gen_greater(cstate, $2); }
| CBYTE NUM byteop NUM { $$ = gen_byteop(cstate, $3, $2, $4); }
| INBOUND { $$ = gen_inbound(cstate, 0); }
| OUTBOUND { $$ = gen_inbound(cstate, 1); }
| VLAN pnum { $$ = gen_vlan(cstate, $2); }
| VLAN { $$ = gen_vlan(cstate, -1); }
| MPLS pnum { $$ = gen_mpls(cstate, $2); }
| MPLS { $$ = gen_mpls(cstate, -1); }
| PPPOED { $$ = gen_pppoed(cstate); }
| PPPOES pnum { $$ = gen_pppoes(cstate, $2); }
| PPPOES { $$ = gen_pppoes(cstate, -1); }
| GENEVE pnum { $$ = gen_geneve(cstate, $2); }
| GENEVE { $$ = gen_geneve(cstate, -1); }
| pfvar { $$ = $1; }
| pqual p80211 { $$ = $2; }
| pllc { $$ = $1; }
;
pfvar: PF_IFNAME ID { $$ = gen_pf_ifname(cstate, $2); }
| PF_RSET ID { $$ = gen_pf_ruleset(cstate, $2); }
| PF_RNR NUM { $$ = gen_pf_rnr(cstate, $2); }
| PF_SRNR NUM { $$ = gen_pf_srnr(cstate, $2); }
| PF_REASON reason { $$ = gen_pf_reason(cstate, $2); }
| PF_ACTION action { $$ = gen_pf_action(cstate, $2); }
;
p80211: TYPE type SUBTYPE subtype
{ $$ = gen_p80211_type(cstate, $2 | $4,
IEEE80211_FC0_TYPE_MASK |
IEEE80211_FC0_SUBTYPE_MASK);
}
| TYPE type { $$ = gen_p80211_type(cstate, $2,
IEEE80211_FC0_TYPE_MASK);
}
| SUBTYPE type_subtype { $$ = gen_p80211_type(cstate, $2,
IEEE80211_FC0_TYPE_MASK |
IEEE80211_FC0_SUBTYPE_MASK);
}
| DIR dir { $$ = gen_p80211_fcdir(cstate, $2); }
;
type: NUM
| ID { $$ = str2tok($1, ieee80211_types);
if ($$ == -1)
bpf_error(cstate, "unknown 802.11 type name");
}
;
subtype: NUM
| ID { const struct tok *types = NULL;
int i;
for (i = 0;; i++) {
if (ieee80211_type_subtypes[i].tok == NULL) {
/* Ran out of types */
bpf_error(cstate, "unknown 802.11 type");
break;
}
if ($<i>-1 == ieee80211_type_subtypes[i].type) {
types = ieee80211_type_subtypes[i].tok;
break;
}
}
$$ = str2tok($1, types);
if ($$ == -1)
bpf_error(cstate, "unknown 802.11 subtype name");
}
;
type_subtype: ID { int i;
for (i = 0;; i++) {
if (ieee80211_type_subtypes[i].tok == NULL) {
/* Ran out of types */
bpf_error(cstate, "unknown 802.11 type name");
break;
}
$$ = str2tok($1, ieee80211_type_subtypes[i].tok);
if ($$ != -1) {
$$ |= ieee80211_type_subtypes[i].type;
break;
}
}
}
;
pllc: LLC { $$ = gen_llc(cstate); }
| LLC ID { if (pcap_strcasecmp($2, "i") == 0)
$$ = gen_llc_i(cstate);
else if (pcap_strcasecmp($2, "s") == 0)
$$ = gen_llc_s(cstate);
else if (pcap_strcasecmp($2, "u") == 0)
$$ = gen_llc_u(cstate);
else {
int subtype;
subtype = str2tok($2, llc_s_subtypes);
if (subtype != -1)
$$ = gen_llc_s_subtype(cstate, subtype);
else {
subtype = str2tok($2, llc_u_subtypes);
if (subtype == -1)
bpf_error(cstate, "unknown LLC type name \"%s\"", $2);
$$ = gen_llc_u_subtype(cstate, subtype);
}
}
}
/* sigh, "rnr" is already a keyword for PF */
| LLC PF_RNR { $$ = gen_llc_s_subtype(cstate, LLC_RNR); }
;
dir: NUM
| ID { if (pcap_strcasecmp($1, "nods") == 0)
$$ = IEEE80211_FC1_DIR_NODS;
else if (pcap_strcasecmp($1, "tods") == 0)
$$ = IEEE80211_FC1_DIR_TODS;
else if (pcap_strcasecmp($1, "fromds") == 0)
$$ = IEEE80211_FC1_DIR_FROMDS;
else if (pcap_strcasecmp($1, "dstods") == 0)
$$ = IEEE80211_FC1_DIR_DSTODS;
else
bpf_error(cstate, "unknown 802.11 direction");
}
;
reason: NUM { $$ = $1; }
| ID { $$ = pfreason_to_num(cstate, $1); }
;
action: ID { $$ = pfaction_to_num(cstate, $1); }
;
relop: '>' { $$ = BPF_JGT; }
| GEQ { $$ = BPF_JGE; }
| '=' { $$ = BPF_JEQ; }
;
irelop: LEQ { $$ = BPF_JGT; }
| '<' { $$ = BPF_JGE; }
| NEQ { $$ = BPF_JEQ; }
;
arth: pnum { $$ = gen_loadi(cstate, $1); }
| narth
;
narth: pname '[' arth ']' { $$ = gen_load(cstate, $1, $3, 1); }
| pname '[' arth ':' NUM ']' { $$ = gen_load(cstate, $1, $3, $5); }
| arth '+' arth { $$ = gen_arth(cstate, BPF_ADD, $1, $3); }
| arth '-' arth { $$ = gen_arth(cstate, BPF_SUB, $1, $3); }
| arth '*' arth { $$ = gen_arth(cstate, BPF_MUL, $1, $3); }
| arth '/' arth { $$ = gen_arth(cstate, BPF_DIV, $1, $3); }
| arth '%' arth { $$ = gen_arth(cstate, BPF_MOD, $1, $3); }
| arth '&' arth { $$ = gen_arth(cstate, BPF_AND, $1, $3); }
| arth '|' arth { $$ = gen_arth(cstate, BPF_OR, $1, $3); }
| arth '^' arth { $$ = gen_arth(cstate, BPF_XOR, $1, $3); }
| arth LSH arth { $$ = gen_arth(cstate, BPF_LSH, $1, $3); }
| arth RSH arth { $$ = gen_arth(cstate, BPF_RSH, $1, $3); }
| '-' arth %prec UMINUS { $$ = gen_neg(cstate, $2); }
| paren narth ')' { $$ = $2; }
| LEN { $$ = gen_loadlen(cstate); }
;
byteop: '&' { $$ = '&'; }
| '|' { $$ = '|'; }
| '<' { $$ = '<'; }
| '>' { $$ = '>'; }
| '=' { $$ = '='; }
;
pnum: NUM
| paren pnum ')' { $$ = $2; }
;
atmtype: LANE { $$ = A_LANE; }
| METAC { $$ = A_METAC; }
| BCC { $$ = A_BCC; }
| OAMF4EC { $$ = A_OAMF4EC; }
| OAMF4SC { $$ = A_OAMF4SC; }
| SC { $$ = A_SC; }
| ILMIC { $$ = A_ILMIC; }
;
atmmultitype: OAM { $$ = A_OAM; }
| OAMF4 { $$ = A_OAMF4; }
| CONNECTMSG { $$ = A_CONNECTMSG; }
| METACONNECT { $$ = A_METACONNECT; }
;
/* ATM field types quantifier */
atmfield: VPI { $$.atmfieldtype = A_VPI; }
| VCI { $$.atmfieldtype = A_VCI; }
;
atmvalue: atmfieldvalue
| relop NUM { $$.b = gen_atmfield_code(cstate, $<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 0); }
| irelop NUM { $$.b = gen_atmfield_code(cstate, $<blk>0.atmfieldtype, (bpf_int32)$2, (bpf_u_int32)$1, 1); }
| paren atmlistvalue ')' { $$.b = $2.b; $$.q = qerr; }
;
atmfieldvalue: NUM {
$$.atmfieldtype = $<blk>0.atmfieldtype;
if ($$.atmfieldtype == A_VPI ||
$$.atmfieldtype == A_VCI)
$$.b = gen_atmfield_code(cstate, $$.atmfieldtype, (bpf_int32) $1, BPF_JEQ, 0);
}
;
atmlistvalue: atmfieldvalue
| atmlistvalue or atmfieldvalue { gen_or($1.b, $3.b); $$ = $3; }
;
/* MTP2 types quantifier */
mtp2type: FISU { $$ = M_FISU; }
| LSSU { $$ = M_LSSU; }
| MSU { $$ = M_MSU; }
| HFISU { $$ = MH_FISU; }
| HLSSU { $$ = MH_LSSU; }
| HMSU { $$ = MH_MSU; }
;
/* MTP3 field types quantifier */
mtp3field: SIO { $$.mtp3fieldtype = M_SIO; }
| OPC { $$.mtp3fieldtype = M_OPC; }
| DPC { $$.mtp3fieldtype = M_DPC; }
| SLS { $$.mtp3fieldtype = M_SLS; }
| HSIO { $$.mtp3fieldtype = MH_SIO; }
| HOPC { $$.mtp3fieldtype = MH_OPC; }
| HDPC { $$.mtp3fieldtype = MH_DPC; }
| HSLS { $$.mtp3fieldtype = MH_SLS; }
;
mtp3value: mtp3fieldvalue
| relop NUM { $$.b = gen_mtp3field_code(cstate, $<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 0); }
| irelop NUM { $$.b = gen_mtp3field_code(cstate, $<blk>0.mtp3fieldtype, (u_int)$2, (u_int)$1, 1); }
| paren mtp3listvalue ')' { $$.b = $2.b; $$.q = qerr; }
;
mtp3fieldvalue: NUM {
$$.mtp3fieldtype = $<blk>0.mtp3fieldtype;
if ($$.mtp3fieldtype == M_SIO ||
$$.mtp3fieldtype == M_OPC ||
$$.mtp3fieldtype == M_DPC ||
$$.mtp3fieldtype == M_SLS ||
$$.mtp3fieldtype == MH_SIO ||
$$.mtp3fieldtype == MH_OPC ||
$$.mtp3fieldtype == MH_DPC ||
$$.mtp3fieldtype == MH_SLS)
$$.b = gen_mtp3field_code(cstate, $$.mtp3fieldtype, (u_int) $1, BPF_JEQ, 0);
}
;
mtp3listvalue: mtp3fieldvalue
| mtp3listvalue or mtp3fieldvalue { gen_or($1.b, $3.b); $$ = $3; }
;
%%