#include <sys/cdefs.h>
#ifndef lint
#if 0
static char yysccsid[] = "@(#)yaccpar	1.9 (Berkeley) 02/21/93";
#else
__IDSTRING(yyrcsid, "$NetBSD: skeleton.c,v 1.14 1997/10/20 03:41:16 lukem Exp $");
#endif
#endif
#include <stdlib.h>
#define YYBYACC 1
#define YYMAJOR 1
#define YYMINOR 9
#define YYLEX yylex()
#define YYEMPTY -1
#define yyclearin (yychar=(YYEMPTY))
#define yyerrok (yyerrflag=0)
#define YYRECOVERING (yyerrflag!=0)
#define YYPREFIX "yy"
#line 2 "parser.y"
#include <stdio.h>
#include <strings.h>
#include "config.h"
#include "netconfig.h"

extern struct icmp_item *ICMP_Send;
extern struct icmp_item *ICMP_Recv;
extern struct udp_item *UDP_Send;
extern struct udp_item *UDP_Recv;
extern u_short ConfigNum;

/* Fields that might be set */
u_long sport=-1, dport=-1, seq=-1, id=-1, type=-1, code=-1, ack=-1, win=-1;
u_long nmatch=-1;

/* Data in the packet */
char *data;

/* Name of current ddos we're working on */
char ddos_name[BUFSIZE];

extern int errno;
#line 26 "parser.y"
typedef union {
	char *string;
	u_short us;
	u_long ul;
} YYSTYPE;
#line 49 "y.tab.c"
#define START 257
#define END 258
#define SEND 259
#define RECV 260
#define ICMP 261
#define UDP 262
#define TCP 263
#define SPORT 264
#define DPORT 265
#define SEQ 266
#define ID 267
#define TYPE 268
#define CODE 269
#define DATA 270
#define ACK 271
#define WIN 272
#define NMATCH 273
#define QSTRING 274
#define YYERRCODE 256
short yylhs[] = {                                        -1,
    0,    0,    1,    1,    3,    3,    5,    5,    5,    5,
    5,    5,    6,    9,    9,   10,   10,   10,   10,   10,
   10,    8,   11,   11,   12,   12,   12,   12,    7,    2,
    4,
};
short yylen[] = {                                         2,
    0,    2,    3,    2,    1,    2,    2,    2,    2,    2,
    2,    2,    2,    0,    2,    2,    2,    2,    2,    2,
    2,    2,    0,    2,    2,    2,    2,    2,    1,    2,
    2,
};
short yydefred[] = {                                      1,
    0,    0,    2,    0,   30,    0,    0,    0,    0,    4,
    5,   31,   14,   23,   29,    7,    8,    9,   12,   11,
   10,    3,    6,    0,    0,    0,    0,    0,    0,    0,
    0,   15,    0,    0,    0,    0,   24,   16,   17,   18,
   19,   20,   21,   25,   26,   27,   28,
};
short yydgoto[] = {                                       1,
    3,    4,    9,   10,   11,   16,   17,   18,   24,   32,
   25,   37,
};
short yysindex[] = {                                      0,
 -250, -272,    0, -255,    0, -266, -243, -243, -255,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0, -256, -264, -259, -258, -247, -246, -245,
 -244,    0, -242, -241, -240, -239,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,
};
short yyrindex[] = {                                      0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0, -237, -234,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,
};
short yygindex[] = {                                      0,
    0,    0,    0,   22,   27,   29,   30,   31,    0,    0,
    0,    0,
};
#define YYTABLESIZE 39
short yytable[] = {                                      33,
   34,    5,    6,    7,    8,   35,    2,   12,   36,   26,
   27,   28,   29,   30,   38,   39,   31,   13,   14,   15,
   13,   13,   13,   22,   22,   22,   40,   41,   42,   43,
   22,   44,   45,   46,   47,   23,   19,   20,   21,
};
short yycheck[] = {                                     264,
  265,  274,  258,  259,  260,  270,  257,  274,  273,  266,
  267,  268,  269,  270,  274,  274,  273,  261,  262,  263,
  258,  259,  260,  258,  259,  260,  274,  274,  274,  274,
    9,  274,  274,  274,  274,    9,    8,    8,    8,
};
#define YYFINAL 1
#ifndef YYDEBUG
#define YYDEBUG 0
#endif
#define YYMAXTOKEN 274
#if YYDEBUG
char *yyname[] = {
"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"START","END","SEND","RECV",
"ICMP","UDP","TCP","SPORT","DPORT","SEQ","ID","TYPE","CODE","DATA","ACK","WIN",
"NMATCH","QSTRING",
};
char *yyrule[] = {
"$accept : ddoses",
"ddoses :",
"ddoses : ddoses ddos",
"ddos : ddos_name ddos_contents ddos_terminator",
"ddos : ddos_name ddos_terminator",
"ddos_contents : ddos_content",
"ddos_contents : ddos_contents ddos_content",
"ddos_content : SEND proto_icmp",
"ddos_content : SEND proto_tcp",
"ddos_content : SEND proto_udp",
"ddos_content : RECV proto_udp",
"ddos_content : RECV proto_tcp",
"ddos_content : RECV proto_icmp",
"proto_icmp : ICMP icmp_options",
"icmp_options :",
"icmp_options : icmp_options icmp_option",
"icmp_option : SEQ QSTRING",
"icmp_option : ID QSTRING",
"icmp_option : TYPE QSTRING",
"icmp_option : CODE QSTRING",
"icmp_option : DATA QSTRING",
"icmp_option : NMATCH QSTRING",
"proto_udp : UDP udp_options",
"udp_options :",
"udp_options : udp_options udp_option",
"udp_option : SPORT QSTRING",
"udp_option : DPORT QSTRING",
"udp_option : DATA QSTRING",
"udp_option : NMATCH QSTRING",
"proto_tcp : TCP",
"ddos_name : START QSTRING",
"ddos_terminator : END QSTRING",
};
#endif
#ifdef YYSTACKSIZE
#undef YYMAXDEPTH
#define YYMAXDEPTH YYSTACKSIZE
#else
#ifdef YYMAXDEPTH
#define YYSTACKSIZE YYMAXDEPTH
#else
#define YYSTACKSIZE 10000
#define YYMAXDEPTH 10000
#endif
#endif
#define YYINITSTACKSIZE 200
int yydebug;
int yynerrs;
int yyerrflag;
int yychar;
short *yyssp;
YYSTYPE *yyvsp;
YYSTYPE yyval;
YYSTYPE yylval;
short *yyss;
short *yysslim;
YYSTYPE *yyvs;
int yystacksize;
#line 111 "parser.y"

add_icmp(struct icmp_item **Head)
{
  struct icmp_item *current = malloc(sizeof(struct icmp_item));
  if(current==NULL){
	perror("malloc failed. aborting.\n");
	exit(FAILURE);
  }

 current->string = data;
 strncpy(current->name, ddos_name, BUFSIZE-1);
 current->type = type;
 current->id = id;
 current->code = code;
 current->seq = seq;
 current->nmatch = nmatch;
 current->Next = NULL;

 if(*Head == NULL){
   *Head = current;
 } else {
   current->Next = *Head;
   *Head = current;
 }
}

add_udp(struct udp_item **Head)
{
 struct udp_item *current = malloc(sizeof(struct udp_item));
 if(current==NULL){
    perror("malloc failed. *aborting*\n");
	exit(FAILURE);
 }
 current->sport = sport;
 current->dport = dport;
 strncpy(current->name, ddos_name, BUFSIZE-1);
 current->string = data;
 current->nmatch=nmatch;
 current->Next = NULL;
 if(*Head == NULL){
	*Head = current;
 } else {
   current->Next = *Head;
   *Head = current;
 }
}
static void
yyerror(char *msg)
{
  fprintf(stderr, "%s\n", msg);
  exit(0);
}

#line 253 "y.tab.c"
/* allocate initial stack or double stack size, up to YYMAXDEPTH */
int yyparse __P((void));
static int yygrowstack __P((void));
static int yygrowstack()
{
    int newsize, i;
    short *newss;
    YYSTYPE *newvs;

    if ((newsize = yystacksize) == 0)
        newsize = YYINITSTACKSIZE;
    else if (newsize >= YYMAXDEPTH)
        return -1;
    else if ((newsize *= 2) > YYMAXDEPTH)
        newsize = YYMAXDEPTH;
    i = yyssp - yyss;
    if ((newss = (short *)realloc(yyss, newsize * sizeof *newss)) == NULL)
        return -1;
    yyss = newss;
    yyssp = newss + i;
    if ((newvs = (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs)) == NULL)
        return -1;
    yyvs = newvs;
    yyvsp = newvs + i;
    yystacksize = newsize;
    yysslim = yyss + newsize - 1;
    return 0;
}

#define YYABORT goto yyabort
#define YYREJECT goto yyabort
#define YYACCEPT goto yyaccept
#define YYERROR goto yyerrlab
int
yyparse()
{
    int yym, yyn, yystate;
#if YYDEBUG
    char *yys;

    if ((yys = getenv("YYDEBUG")) != NULL)
    {
        yyn = *yys;
        if (yyn >= '0' && yyn <= '9')
            yydebug = yyn - '0';
    }
#endif

    yynerrs = 0;
    yyerrflag = 0;
    yychar = (-1);

    if (yyss == NULL && yygrowstack()) goto yyoverflow;
    yyssp = yyss;
    yyvsp = yyvs;
    *yyssp = yystate = 0;

yyloop:
    if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
    if (yychar < 0)
    {
        if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
        if (yydebug)
        {
            yys = 0;
            if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
            if (!yys) yys = "illegal-symbol";
            printf("%sdebug: state %d, reading %d (%s)\n",
                    YYPREFIX, yystate, yychar, yys);
        }
#endif
    }
    if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
    {
#if YYDEBUG
        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;
    goto yynewerror;
yynewerror:
    yyerror("syntax error");
    goto yyerrlab;
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 7:
#line 47 "parser.y"
{ 
			add_icmp(&ICMP_Send); data = NULL;
			nmatch=sport=dport=seq=id=type=code=ack=win=-1;
		  }
break;
case 9:
#line 52 "parser.y"
{
			add_udp(&UDP_Send); data = NULL;
			nmatch=sport=dport=seq=id=type=code=ack=win=-1;
		}
break;
case 10:
#line 56 "parser.y"
{
			add_udp(&UDP_Recv); data = NULL;
			nmatch=sport=dport=seq=id=type=code=ack=win=-1;
		}
break;
case 12:
#line 61 "parser.y"
{
			add_icmp(&ICMP_Recv); data=NULL;
			nmatch=sport=dport=seq=id=type=code=ack=win=-1;
	}
break;
case 16:
#line 71 "parser.y"
{ seq = atoi(yyvsp[0].string); }
break;
case 17:
#line 72 "parser.y"
{ id = atoi(yyvsp[0].string); }
break;
case 18:
#line 73 "parser.y"
{ type = atoi(yyvsp[0].string); }
break;
case 19:
#line 74 "parser.y"
{ code = atoi(yyvsp[0].string); }
break;
case 20:
#line 75 "parser.y"
{ 
	      data = malloc(strlen(yyvsp[0].string) * (sizeof(char))); 
	      if(data == NULL){
		  fprintf(stderr, "malloc error. *aborting*\n");
		  exit(FAILURE);
	      }
	     strcpy(data, yyvsp[0].string);
	  }
break;
case 21:
#line 83 "parser.y"
{ nmatch = atoi(yyvsp[0].string); }
break;
case 25:
#line 90 "parser.y"
{ sport = atoi(yyvsp[0].string); }
break;
case 26:
#line 91 "parser.y"
{ dport = atoi(yyvsp[0].string); }
break;
case 27:
#line 92 "parser.y"
{
		data = malloc(strlen(yyvsp[0].string) * (sizeof(char)));
		if(data == NULL){
			fprintf(stderr, "malloc error. *aborting*\n");
			exit(FAILURE);
		}
		strcpy(data, yyvsp[0].string);
	}
break;
case 28:
#line 100 "parser.y"
{ nmatch = atoi(yyvsp[0].string); }
break;
case 29:
#line 102 "parser.y"
{ printf("TCP Not implemented\n"); }
break;
case 30:
#line 104 "parser.y"
{ strncpy(ddos_name, (yyvsp[0].string), sizeof(ddos_name)); }
break;
case 31:
#line 106 "parser.y"
{ ConfigNum++; 
	    bzero(ddos_name, sizeof(ddos_name));
	}
break;
#line 515 "y.tab.c"
    }
    yyssp -= yym;
    yystate = *yyssp;
    yyvsp -= yym;
    yym = yylhs[yyn];
    if (yystate == 0 && yym == 0)
    {
#if YYDEBUG
        if (yydebug)
            printf("%sdebug: after reduction, shifting from state 0 to\
 state %d\n", YYPREFIX, YYFINAL);
#endif
        yystate = YYFINAL;
        *++yyssp = YYFINAL;
        *++yyvsp = yyval;
        if (yychar < 0)
        {
            if ((yychar = yylex()) < 0) yychar = 0;
#if YYDEBUG
            if (yydebug)
            {
                yys = 0;
                if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                if (!yys) yys = "illegal-symbol";
                printf("%sdebug: state %d, reading %d (%s)\n",
                        YYPREFIX, YYFINAL, yychar, yys);
            }
#endif
        }
        if (yychar == 0) goto yyaccept;
        goto yyloop;
    }
    if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
            yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
        yystate = yytable[yyn];
    else
        yystate = yydgoto[yym];
#if YYDEBUG
    if (yydebug)
        printf("%sdebug: after reduction, shifting from state %d \
to state %d\n", YYPREFIX, *yyssp, yystate);
#endif
    if (yyssp >= yysslim && yygrowstack())
    {
        goto yyoverflow;
    }
    *++yyssp = yystate;
    *++yyvsp = yyval;
    goto yyloop;
yyoverflow:
    yyerror("yacc stack overflow");
yyabort:
    return (1);
yyaccept:
    return (0);
}