grammar.c

来自「Ubuntu packages of security software。 相」· C语言 代码 · 共 1,792 行 · 第 1/4 页

        if (yydebug)
            printf("%sdebug: state %d, shifting to state %d\n",
                    YYPREFIX, yystate, yytable[yyn]);
#endif
        if (yyssp >= yysslim && yygrowstack())
        {
            goto yyoverflow;
        }
        *++yyssp = yystate = yytable[yyn];
        *++yyvsp = yylval;
        yychar = (-1);
        if (yyerrflag > 0)  --yyerrflag;
        goto yyloop;
    }
    if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
        yyn = yytable[yyn];
        goto yyreduce;
    }
    if (yyerrflag) goto yyinrecovery;
#if defined(lint) || defined(__GNUC__)
    goto yynewerror;
#endif
yynewerror:
    yyerror("syntax error");
#if defined(lint) || defined(__GNUC__)
    goto yyerrlab;
#endif
yyerrlab:
    ++yynerrs;
yyinrecovery:
    if (yyerrflag < 3)
    {
        yyerrflag = 3;
        for (;;)
        {
            if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&
                    yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: state %d, error recovery shifting\
 to state %d\n", YYPREFIX, *yyssp, yytable[yyn]);
#endif
                if (yyssp >= yysslim && yygrowstack())
                {
                    goto yyoverflow;
                }
                *++yyssp = yystate = yytable[yyn];
                *++yyvsp = yylval;
                goto yyloop;
            }
            else
            {
#if YYDEBUG
                if (yydebug)
                    printf("%sdebug: error recovery discarding state %d\n",
                            YYPREFIX, *yyssp);
#endif
                if (yyssp <= yyss) goto yyabort;
                --yyssp;
                --yyvsp;
            }
        }
    }
    else
    {
        if (yychar == 0) goto yyabort;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
        yychar = (-1);
        goto yyloop;
    }
yyreduce:
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: state %d, reducing by rule %d (%s)\n",
                YYPREFIX, yystate, yyn, yyrule[yyn]);
#endif
    yym = yylen[yyn];
    yyval = yyvsp[1-yym];
    switch (yyn)
    {
case 1:
#line 161 "grammar.y"
{
	finish_parse(yyvsp[0].blk.b);
}
break;
case 3:
#line 166 "grammar.y"
{ yyval.blk.q = qerr; }
break;
case 5:
#line 169 "grammar.y"
{ gen_and(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 6:
#line 170 "grammar.y"
{ gen_and(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 7:
#line 171 "grammar.y"
{ gen_or(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 8:
#line 172 "grammar.y"
{ gen_or(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 9:
#line 174 "grammar.y"
{ yyval.blk = yyvsp[-1].blk; }
break;
case 10:
#line 176 "grammar.y"
{ yyval.blk = yyvsp[-1].blk; }
break;
case 12:
#line 179 "grammar.y"
{ yyval.blk.b = gen_ncode(NULL, (bpf_u_int32)yyvsp[0].i,
						   yyval.blk.q = yyvsp[-1].blk.q); }
break;
case 13:
#line 181 "grammar.y"
{ yyval.blk = yyvsp[-1].blk; }
break;
case 14:
#line 183 "grammar.y"
{ yyval.blk.b = gen_scode(yyvsp[0].s, yyval.blk.q = yyvsp[-1].blk.q); }
break;
case 15:
#line 184 "grammar.y"
{ yyval.blk.b = gen_mcode(yyvsp[-2].s, NULL, yyvsp[0].i,
				    yyval.blk.q = yyvsp[-3].blk.q); }
break;
case 16:
#line 186 "grammar.y"
{ yyval.blk.b = gen_mcode(yyvsp[-2].s, yyvsp[0].s, 0,
				    yyval.blk.q = yyvsp[-3].blk.q); }
break;
case 17:
#line 188 "grammar.y"
{
				  /* Decide how to parse HID based on proto */
				  yyval.blk.q = yyvsp[-1].blk.q;
				  yyval.blk.b = gen_ncode(yyvsp[0].s, 0, yyval.blk.q);
				}
break;
case 18:
#line 193 "grammar.y"
{
#ifdef INET6
				  yyval.blk.b = gen_mcode6(yyvsp[-2].s, NULL, yyvsp[0].i,
				    yyval.blk.q = yyvsp[-3].blk.q);
#else
				  bpf_error("'ip6addr/prefixlen' not supported "
					"in this configuration");
#endif /*INET6*/
				}
break;
case 19:
#line 202 "grammar.y"
{
#ifdef INET6
				  yyval.blk.b = gen_mcode6(yyvsp[0].s, 0, 128,
				    yyval.blk.q = yyvsp[-1].blk.q);
#else
				  bpf_error("'ip6addr' not supported "
					"in this configuration");
#endif /*INET6*/
				}
break;
case 20:
#line 211 "grammar.y"
{ 
				  yyval.blk.b = gen_ecode(yyvsp[0].e, yyval.blk.q = yyvsp[-1].blk.q);
				  /*
				   * $1 was allocated by "pcap_ether_aton()",
				   * so we must free it now that we're done
				   * with it.
				   */
				  free(yyvsp[0].e);
				}
break;
case 21:
#line 220 "grammar.y"
{
				  yyval.blk.b = gen_acode(yyvsp[0].e, yyval.blk.q = yyvsp[-1].blk.q);
				  /*
				   * $1 was allocated by "pcap_ether_aton()",
				   * so we must free it now that we're done
				   * with it.
				   */
				  free(yyvsp[0].e);
				}
break;
case 22:
#line 229 "grammar.y"
{ gen_not(yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 23:
#line 231 "grammar.y"
{ yyval.blk = yyvsp[-1].blk; }
break;
case 24:
#line 233 "grammar.y"
{ yyval.blk = yyvsp[-1].blk; }
break;
case 26:
#line 236 "grammar.y"
{ gen_and(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 27:
#line 237 "grammar.y"
{ gen_or(yyvsp[-2].blk.b, yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 28:
#line 239 "grammar.y"
{ yyval.blk.b = gen_ncode(NULL, (bpf_u_int32)yyvsp[0].i,
						   yyval.blk.q = yyvsp[-1].blk.q); }
break;
case 31:
#line 244 "grammar.y"
{ gen_not(yyvsp[0].blk.b); yyval.blk = yyvsp[0].blk; }
break;
case 32:
#line 246 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-2].i, yyvsp[-1].i, yyvsp[0].i); }
break;
case 33:
#line 247 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-1].i, yyvsp[0].i, Q_DEFAULT); }
break;
case 34:
#line 248 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-1].i, Q_DEFAULT, yyvsp[0].i); }
break;
case 35:
#line 249 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-1].i, Q_DEFAULT, Q_PROTO); }
break;
case 36:
#line 250 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-1].i, Q_DEFAULT, Q_PROTOCHAIN); }
break;
case 37:
#line 251 "grammar.y"
{ QSET(yyval.blk.q, yyvsp[-1].i, Q_DEFAULT, yyvsp[0].i); }
break;
case 38:
#line 253 "grammar.y"
{ yyval.blk = yyvsp[0].blk; }
break;
case 39:
#line 254 "grammar.y"
{ yyval.blk.b = yyvsp[-1].blk.b; yyval.blk.q = yyvsp[-2].blk.q; }
break;
case 40:
#line 255 "grammar.y"
{ yyval.blk.b = gen_proto_abbrev(yyvsp[0].i); yyval.blk.q = qerr; }
break;
case 41:
#line 256 "grammar.y"
{ yyval.blk.b = gen_relation(yyvsp[-1].i, yyvsp[-2].a, yyvsp[0].a, 0);
				  yyval.blk.q = qerr; }
break;
case 42:
#line 258 "grammar.y"
{ yyval.blk.b = gen_relation(yyvsp[-1].i, yyvsp[-2].a, yyvsp[0].a, 1);
				  yyval.blk.q = qerr; }
break;
case 43:
#line 260 "grammar.y"
{ yyval.blk.b = yyvsp[0].rblk; yyval.blk.q = qerr; }
break;
case 44:
#line 261 "grammar.y"
{ yyval.blk.b = gen_atmtype_abbrev(yyvsp[0].i); yyval.blk.q = qerr; }
break;
case 45:
#line 262 "grammar.y"
{ yyval.blk.b = gen_atmmulti_abbrev(yyvsp[0].i); yyval.blk.q = qerr; }
break;
case 46:
#line 263 "grammar.y"
{ yyval.blk.b = yyvsp[0].blk.b; yyval.blk.q = qerr; }
break;
case 47:
#line 264 "grammar.y"
{ yyval.blk.b = yyvsp[0].blk.b; yyval.blk.q = qerr; }
break;
case 49:
#line 268 "grammar.y"
{ yyval.i = Q_DEFAULT; }
break;
case 50:
#line 271 "grammar.y"
{ yyval.i = Q_SRC; }
break;
case 51:
#line 272 "grammar.y"
{ yyval.i = Q_DST; }
break;
case 52:
#line 273 "grammar.y"
{ yyval.i = Q_OR; }
break;
case 53:
#line 274 "grammar.y"
{ yyval.i = Q_OR; }
break;
case 54:
#line 275 "grammar.y"
{ yyval.i = Q_AND; }
break;
case 55:
#line 276 "grammar.y"
{ yyval.i = Q_AND; }
break;
case 56:
#line 279 "grammar.y"
{ yyval.i = Q_HOST; }
break;
case 57:
#line 280 "grammar.y"
{ yyval.i = Q_NET; }
break;
case 58:
#line 281 "grammar.y"
{ yyval.i = Q_PORT; }
break;
case 59:
#line 282 "grammar.y"
{ yyval.i = Q_PORTRANGE; }
break;
case 60:
#line 285 "grammar.y"
{ yyval.i = Q_GATEWAY; }
break;
case 61:
#line 287 "grammar.y"
{ yyval.i = Q_LINK; }
break;
case 62:
#line 288 "grammar.y"
{ yyval.i = Q_IP; }
break;
case 63:
#line 289 "grammar.y"
{ yyval.i = Q_ARP; }
break;
case 64:
#line 290 "grammar.y"
{ yyval.i = Q_RARP; }
break;
case 65:
#line 291 "grammar.y"
{ yyval.i = Q_SCTP; }
break;
case 66:
#line 292 "grammar.y"
{ yyval.i = Q_TCP; }
break;
case 67:
#line 293 "grammar.y"
{ yyval.i = Q_UDP; }
break;
case 68:
#line 294 "grammar.y"
{ yyval.i = Q_ICMP; }
break;
case 69:
#line 295 "grammar.y"
{ yyval.i = Q_IGMP; }
break;
case 70:
#line 296 "grammar.y"
{ yyval.i = Q_IGRP; }
break;
case 71:
#line 297 "grammar.y"
{ yyval.i = Q_PIM; }
break;
case 72:
#line 298 "grammar.y"
{ yyval.i = Q_VRRP; }
break;
case 73:
#line 299 "grammar.y"
{ yyval.i = Q_ATALK; }
break;
case 74:
#line 300 "grammar.y"
{ yyval.i = Q_AARP; }
break;
case 75:
#line 301 "grammar.y"
{ yyval.i = Q_DECNET; }
break;
case 76:
#line 302 "grammar.y"
{ yyval.i = Q_LAT; }
break;
case 77:
#line 303 "grammar.y"
{ yyval.i = Q_SCA; }
break;
case 78:
#line 304 "grammar.y"
{ yyval.i = Q_MOPDL; }
break;
case 79:
#line 305 "grammar.y"
{ yyval.i = Q_MOPRC; }
break;
case 80:
#line 306 "grammar.y"
{ yyval.i = Q_IPV6; }
break;
case 81:
#line 307 "grammar.y"
{ yyval.i = Q_ICMPV6; }
break;
case 82:
#line 308 "grammar.y"
{ yyval.i = Q_AH; }
break;
case 83:
#line 309 "grammar.y"
{ yyval.i = Q_ESP; }
break;
case 84:
#line 310 "grammar.y"
{ yyval.i = Q_ISO; }
break;
case 85:
#line 311 "grammar.y"
{ yyval.i = Q_ESIS; }
break;