ftpcmd.c

linux下ftpd服务器端的源码实现

/*  A Bison parser, made from ftpcmd.y
    by GNU Bison version 1.28  */

#define YYBISON 1  /* Identify Bison output.  */

#define	A	257
#define	B	258
#define	C	259
#define	E	260
#define	F	261
#define	I	262
#define	L	263
#define	N	264
#define	P	265
#define	R	266
#define	S	267
#define	T	268
#define	SP	269
#define	CRLF	270
#define	COMMA	271
#define	USER	272
#define	PASS	273
#define	ACCT	274
#define	REIN	275
#define	QUIT	276
#define	PORT	277
#define	PASV	278
#define	TYPE	279
#define	STRU	280
#define	MODE	281
#define	RETR	282
#define	STOR	283
#define	APPE	284
#define	MLFL	285
#define	MAIL	286
#define	MSND	287
#define	MSOM	288
#define	MSAM	289
#define	MRSQ	290
#define	MRCP	291
#define	ALLO	292
#define	REST	293
#define	RNFR	294
#define	RNTO	295
#define	ABOR	296
#define	DELE	297
#define	CWD	298
#define	LIST	299
#define	NLST	300
#define	SITE	301
#define	STAT	302
#define	HELP	303
#define	NOOP	304
#define	MKD	305
#define	RMD	306
#define	PWD	307
#define	CDUP	308
#define	STOU	309
#define	SMNT	310
#define	SYST	311
#define	SIZE	312
#define	MDTM	313
#define	UMASK	314
#define	IDLE	315
#define	CHMOD	316
#define	LEXERR	317
#define	STRING	318
#define	NUMBER	319

#line 37 "ftpcmd.y"


#ifndef lint
static char sccsid[] = "@(#)ftpcmd.y	8.3 (Berkeley) 4/6/94";
#endif /* not lint */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/stat.h>

#include <netinet/in.h>
#include <arpa/ftp.h>

#include <ctype.h>
#include <errno.h>
#include <pwd.h>
#include <setjmp.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif
#include <unistd.h>
#include <limits.h>
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif
/* Include glob.h last, because it may define "const" which breaks
   system headers on some platforms. */
#include <glob.h>

#include "extern.h"

#if ! defined (NBBY) && defined (CHAR_BIT)
#define NBBY CHAR_BIT
#endif

off_t restart_point;

static char cbuf[512];           /* Command Buffer.  */
static char *fromname;
static int cmd_type;
static int cmd_form;
static int cmd_bytesz;

struct tab
{
  const char	*name;
  short	token;
  short	state;
  short	implemented;	/* 1 if command is implemented */
  const char	*help;
};

extern struct tab cmdtab[];
extern struct tab sitetab[];
static char *copy         (char *);
static void help          (struct tab *, char *);
static struct tab *lookup (struct tab *, char *);
static void sizecmd       (char *);
static int yylex          (void);
static void yyerror       (const char *s);


#line 117 "ftpcmd.y"
typedef union {
	int	i;
	char   *s;
} YYSTYPE;
#include <stdio.h>

#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif



#define	YYFINAL		210
#define	YYFLAG		-32768
#define	YYNTBASE	66

#define YYTRANSLATE(x) ((unsigned)(x) <= 319 ? yytranslate[x] : 81)

static const char yytranslate[] = {     0,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     1,     3,     4,     5,     6,
     7,     8,     9,    10,    11,    12,    13,    14,    15,    16,
    17,    18,    19,    20,    21,    22,    23,    24,    25,    26,
    27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
    37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
    47,    48,    49,    50,    51,    52,    53,    54,    55,    56,
    57,    58,    59,    60,    61,    62,    63,    64,    65
};

#if YYDEBUG != 0
static const short yyprhs[] = {     0,
     0,     1,     4,     7,    12,    17,    23,    27,    32,    37,
    42,    47,    56,    62,    68,    74,    78,    84,    88,    94,
   100,   103,   109,   115,   118,   122,   128,   131,   136,   139,
   145,   151,   155,   159,   164,   171,   177,   185,   195,   200,
   208,   214,   217,   223,   229,   232,   235,   241,   246,   248,
   249,   251,   253,   265,   267,   269,   271,   273,   277,   279,
   283,   285,   287,   291,   294,   296,   298,   300,   302,   304,
   306,   308,   310,   312
};

static const short yyrhs[] = {    -1,
    66,    67,     0,    66,    68,     0,    18,    15,    69,    16,
     0,    19,    15,    70,    16,     0,    23,    80,    15,    72,
    16,     0,    24,    80,    16,     0,    25,    15,    74,    16,
     0,    26,    15,    75,    16,     0,    27,    15,    76,    16,
     0,    38,    15,    65,    16,     0,    38,    15,    65,    15,
    12,    15,    65,    16,     0,    28,    80,    15,    77,    16,
     0,    29,    80,    15,    77,    16,     0,    30,    80,    15,
    77,    16,     0,    46,    80,    16,     0,    46,    80,    15,
    64,    16,     0,    45,    80,    16,     0,    45,    80,    15,
    77,    16,     0,    48,    80,    15,    77,    16,     0,    48,
    16,     0,    43,    80,    15,    77,    16,     0,    41,    80,
    15,    77,    16,     0,    42,    16,     0,    44,    80,    16,
     0,    44,    80,    15,    77,    16,     0,    49,    16,     0,
    49,    15,    64,    16,     0,    50,    16,     0,    51,    80,
    15,    77,    16,     0,    52,    80,    15,    77,    16,     0,
    53,    80,    16,     0,    54,    80,    16,     0,    47,    15,
    49,    16,     0,    47,    15,    49,    15,    64,    16,     0,
    47,    15,    60,    80,    16,     0,    47,    15,    60,    80,
    15,    79,    16,     0,    47,    15,    62,    80,    15,    79,
    15,    77,    16,     0,    47,    15,    61,    16,     0,    47,
    15,    80,    61,    15,    65,    16,     0,    55,    80,    15,
    77,    16,     0,    57,    16,     0,    58,    80,    15,    77,
    16,     0,    59,    80,    15,    77,    16,     0,    22,    16,
     0,     1,    16,     0,    40,    80,    15,    77,    16,     0,
    39,    15,    71,    16,     0,    64,     0,     0,    64,     0,
    65,     0,    65,    17,    65,    17,    65,    17,    65,    17,
    65,    17,    65,     0,    10,     0,    14,     0,     5,     0,
     3,     0,     3,    15,    73,     0,     6,     0,     6,    15,
    73,     0,     8,     0,     9,     0,     9,    15,    71,     0,
     9,    71,     0,     7,     0,    12,     0,    11,     0,    13,
     0,     4,     0,     5,     0,    78,     0,    64,     0,    65,
     0,     0
};

#endif

#if YYDEBUG != 0
static const short yyrline[] = { 0,
   152,   153,   160,   164,   169,   175,   197,   202,   237,   249,
   261,   265,   269,   276,   283,   290,   295,   302,   307,   314,
   321,   325,   332,   345,   349,   354,   361,   365,   382,   386,
   393,   400,   405,   410,   414,   420,   430,   445,   459,   465,
   481,   488,   534,   551,   573,   578,   584,   595,   610,   614,
   618,   622,   626,   640,   644,   648,   655,   660,   665,   670,
   675,   679,   684,   690,   698,   702,   706,   713,   717,   721,
   728,   765,   769,   796
};
#endif


#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)

static const char * const yytname[] = {   "$","error","$undefined.","A","B",
"C","E","F","I","L","N","P","R","S","T","SP","CRLF","COMMA","USER","PASS","ACCT",
"REIN","QUIT","PORT","PASV","TYPE","STRU","MODE","RETR","STOR","APPE","MLFL",
"MAIL","MSND","MSOM","MSAM","MRSQ","MRCP","ALLO","REST","RNFR","RNTO","ABOR",
"DELE","CWD","LIST","NLST","SITE","STAT","HELP","NOOP","MKD","RMD","PWD","CDUP",
"STOU","SMNT","SYST","SIZE","MDTM","UMASK","IDLE","CHMOD","LEXERR","STRING",
"NUMBER","cmd_list","cmd","rcmd","username","password","byte_size","host_port",
"form_code","type_code","struct_code","mode_code","pathname","pathstring","octal_number",
"check_login", NULL
};
#endif

static const short yyr1[] = {     0,
    66,    66,    66,    67,    67,    67,    67,    67,    67,    67,
    67,    67,    67,    67,    67,    67,    67,    67,    67,    67,
    67,    67,    67,    67,    67,    67,    67,    67,    67,    67,
    67,    67,    67,    67,    67,    67,    67,    67,    67,    67,
    67,    67,    67,    67,    67,    67,    68,    68,    69,    70,
    70,    71,    72,    73,    73,    73,    74,    74,    74,    74,
    74,    74,    74,    74,    75,    75,    75,    76,    76,    76,
    77,    78,    79,    80
};

static const short yyr2[] = {     0,
     0,     2,     2,     4,     4,     5,     3,     4,     4,     4,
     4,     8,     5,     5,     5,     3,     5,     3,     5,     5,
     2,     5,     5,     2,     3,     5,     2,     4,     2,     5,
     5,     3,     3,     4,     6,     5,     7,     9,     4,     7,
     5,     2,     5,     5,     2,     2,     5,     4,     1,     0,
     1,     1,    11,     1,     1,     1,     1,     3,     1,     3,
     1,     1,     3,     2,     1,     1,     1,     1,     1,     1,
     1,     1,     1,     0
};

static const short yydefact[] = {     1,
     0,     0,     0,     0,     0,    74,    74,     0,     0,     0,
    74,    74,    74,     0,     0,    74,    74,     0,    74,    74,
    74,    74,     0,    74,     0,     0,    74,    74,    74,    74,
    74,     0,    74,    74,     2,     3,    46,     0,    50,    45,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,    24,     0,     0,     0,     0,     0,    21,     0,
     0,    27,    29,     0,     0,     0,     0,     0,    42,     0,
     0,    49,     0,    51,     0,     0,     7,    57,    59,    61,
    62,     0,    65,    67,    66,     0,    69,    70,    68,     0,
     0,     0,     0,     0,    52,     0,     0,     0,     0,     0,
    25,     0,    18,     0,    16,     0,    74,     0,    74,     0,
     0,     0,     0,     0,    32,    33,     0,     0,     0,     4,
     5,     0,     0,     0,     0,     0,    64,     8,     9,    10,
    72,     0,    71,     0,     0,     0,    11,    48,     0,     0,
     0,     0,     0,     0,     0,    34,     0,    39,     0,     0,
     0,    28,     0,     0,     0,     0,     0,     0,     6,    56,
    54,    55,    58,    60,    63,    13,    14,    15,     0,    47,
    23,    22,    26,    19,    17,     0,     0,    36,     0,     0,
    20,    30,    31,    41,    43,    44,     0,     0,    35,    73,
     0,     0,     0,     0,     0,    37,     0,    40,     0,    12,
     0,     0,    38,     0,     0,     0,     0,    53,     0,     0
};

static const short yydefgoto[] = {     1,
    35,    36,    73,    75,    96,   123,   163,    82,    86,    90,
   132,   133,   191,    41
};

static const short yypact[] = {-32768,
    42,    -7,     8,    20,    24,-32768,-32768,    44,    59,    62,
-32768,-32768,-32768,    83,    89,-32768,-32768,    47,-32768,-32768,
-32768,-32768,    97,    98,    16,    99,-32768,-32768,-32768,-32768,
-32768,   100,-32768,-32768,-32768,-32768,-32768,    49,    53,-32768,
   103,   104,    70,     6,     7,   106,   107,   108,    54,    60,
   112,   113,-32768,   114,    39,    41,    87,   -46,-32768,   115,
    67,-32768,-32768,   117,   118,   119,   120,   122,-32768,   123,
   124,-32768,   125,-32768,   126,    69,-32768,   128,   129,-32768,
   -13,   130,-32768,-32768,-32768,   131,-32768,-32768,-32768,   132,
    76,    76,    76,    91,-32768,   133,    76,    76,    76,    76,
-32768,    76,-32768,    81,-32768,    93,-32768,   134,-32768,    90,
    76,   136,    76,    76,-32768,-32768,    76,    76,    76,-32768,
-32768,   137,   139,    48,    48,    60,-32768,-32768,-32768,-32768,
-32768,   140,-32768,   141,   142,   147,-32768,-32768,   144,   145,
   146,   148,   149,   150,   105,-32768,    95,-32768,   138,   152,
   154,-32768,   155,   156,   157,   158,   159,   111,-32768,-32768,
-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,   153,-32768,
-32768,-32768,-32768,-32768,-32768,   161,   116,-32768,   116,   121,
-32768,-32768,-32768,-32768,-32768,-32768,   162,   127,-32768,-32768,
   164,   163,   166,   135,   167,-32768,    76,-32768,   168,-32768,
   171,   143,-32768,   172,   151,   173,   160,-32768,   184,-32768
};

static const short yypgoto[] = {-32768,
-32768,-32768,-32768,-32768,   -77,-32768,    38,-32768,-32768,-32768,
   -92,-32768,     9,    17
};


#define	YYLAST		225


static const short yytable[] = {   134,
   135,   126,   106,   127,   139,   140,   141,   142,    37,   143,
    87,    88,    83,   107,   108,   109,    84,    85,   151,    89,
   153,   154,    38,    42,   155,   156,   157,    46,    47,    48,
    61,    62,    51,    52,    39,    54,    55,    56,    57,    40,
    60,   209,     2,    64,    65,    66,    67,    68,   165,    70,
    71,    95,   160,   100,   101,   102,   103,   161,    43,     3,
     4,   162,    53,     5,     6,     7,     8,     9,    10,    11,
    12,    13,    78,    44,   110,    79,    45,    80,    81,    14,
    15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
    25,    26,    27,    28,    29,    30,    31,    49,    32,    33,
    34,   104,   105,    50,   201,   136,   137,   145,   146,   177,
   178,    58,    72,    59,    63,    69,    74,    76,    94,    77,
    91,    92,    93,   147,    95,   149,    97,    98,    99,   111,
   112,   113,   114,   122,   115,   116,   117,   118,   119,   131,
   120,   121,   124,   125,   144,   128,   129,   130,   138,   148,
   150,   152,   179,   158,   159,   166,   167,   168,   169,   170,
   171,   172,   164,   173,   174,   175,   180,   188,   176,   181,
   182,   183,   184,   185,   186,   187,   189,   197,   194,   196,
   190,   198,   200,   210,   202,   193,   203,   192,   205,   207,
     0,   195,     0,     0,     0,     0,     0,     0,     0,   199,
     0,     0,     0,     0,     0,     0,     0,   204,     0,     0,
     0,     0,     0,     0,     0,   206,     0,     0,     0,     0,
     0,     0,     0,     0,   208
};

static const short yycheck[] = {    92,
    93,    15,    49,    81,    97,    98,    99,   100,    16,   102,
     4,     5,     7,    60,    61,    62,    11,    12,   111,    13,
   113,   114,    15,     7,   117,   118,   119,    11,    12,    13,
    15,    16,    16,    17,    15,    19,    20,    21,    22,    16,
    24,     0,     1,    27,    28,    29,    30,    31,   126,    33,
    34,    65,     5,    15,    16,    15,    16,    10,    15,    18,
    19,    14,    16,    22,    23,    24,    25,    26,    27,    28,
    29,    30,     3,    15,    58,     6,    15,     8,     9,    38,
    39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
    49,    50,    51,    52,    53,    54,    55,    15,    57,    58,
    59,    15,    16,    15,   197,    15,    16,    15,    16,    15,
    16,    15,    64,    16,    16,    16,    64,    15,    65,    16,
    15,    15,    15,   107,    65,   109,    15,    15,    15,    15,
    64,    15,    15,    65,    16,    16,    15,    15,    15,    64,
    16,    16,    15,    15,    64,    16,    16,    16,    16,    16,
    61,    16,    15,    17,    16,    16,    16,    16,    12,    16,
    16,    16,   125,    16,    16,    16,    15,    15,    64,    16,
    16,    16,    16,    16,    16,    65,    16,    15,    17,    16,
    65,    16,    16,     0,    17,    65,    16,   179,    17,    17,
    -1,    65,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    65,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    65,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    65,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    65
};
/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
#line 3 "/usr/share/bison.simple"
/* This file comes from bison-1.28.  */

/* Skeleton output parser for bison,
   Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* As a special exception, when this file is copied by Bison into a
   Bison output file, you may use that output file without restriction.
   This special exception was added by the Free Software Foundation
   in version 1.24 of Bison.  */

/* This is the parser code that is written into each bison parser
  when the %semantic_parser declaration is not specified in the grammar.
  It was written by Richard Stallman by simplifying the hairy parser
  used when %semantic_parser is specified.  */

#ifndef YYSTACK_USE_ALLOCA
#ifdef alloca
#define YYSTACK_USE_ALLOCA
#else /* alloca not defined */
#ifdef __GNUC__
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#else /* not GNU C.  */
#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
#define YYSTACK_USE_ALLOCA
#include <alloca.h>
#else /* not sparc */
/* We think this test detects Watcom and Microsoft C.  */
/* This used to test MSDOS, but that is a bad idea
   since that symbol is in the user namespace.  */
#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
#if 0 /* No need for malloc.h, which pollutes the namespace;
	 instead, just don't use alloca.  */
#include <malloc.h>
#endif
#else /* not MSDOS, or __TURBOC__ */
#if defined(_AIX)
/* I don't know what this was needed for, but it pollutes the namespace.
   So I turned it off.   rms, 2 May 1997.  */
/* #include <malloc.h>  */
 #pragma alloca
#define YYSTACK_USE_ALLOCA
#else /* not MSDOS, or __TURBOC__, or _AIX */
#if 0
#ifdef __hpux /* [e-mail] says this works for HPUX 9.05 and up,
		 and on HPUX 10.  Eventually we can turn this on.  */
#define YYSTACK_USE_ALLOCA
#define alloca __builtin_alloca
#endif /* __hpux */
#endif
#endif /* not _AIX */
#endif /* not MSDOS, or __TURBOC__ */
#endif /* not sparc */
#endif /* not GNU C */
#endif /* alloca not defined */
#endif /* YYSTACK_USE_ALLOCA not defined */

#ifdef YYSTACK_USE_ALLOCA
#define YYSTACK_ALLOC alloca
#else
#define YYSTACK_ALLOC malloc
#endif

/* Note: there must be only one dollar sign in this file.
   It is replaced by the list of actions, each action
   as one case of the switch.  */

#define yyerrok		(yyerrstatus = 0)
#define yyclearin	(yychar = YYEMPTY)
#define YYEMPTY		-2
#define YYEOF		0
#define YYACCEPT	goto yyacceptlab
#define YYABORT 	goto yyabortlab
#define YYERROR		goto yyerrlab1
/* Like YYERROR except do call yyerror.
   This remains here temporarily to ease the
   transition to the new meaning of YYERROR, for GCC.
   Once GCC version 2 has supplanted version 1, this can go.  */
#define YYFAIL		goto yyerrlab
#define YYRECOVERING()  (!!yyerrstatus)
#define YYBACKUP(token, value) \
do								\
  if (yychar == YYEMPTY && yylen == 1)				\
    { yychar = (token), yylval = (value);			\
      yychar1 = YYTRANSLATE (yychar);				\
      YYPOPSTACK;						\
      goto yybackup;						\
    }								\
  else								\
    { yyerror ("syntax error: cannot back up"); YYERROR; }	\
while (0)

#define YYTERROR	1
#define YYERRCODE	256

#ifndef YYPURE
#define YYLEX		yylex()
#endif

#ifdef YYPURE
#ifdef YYLSP_NEEDED
#ifdef YYLEX_PARAM
#define YYLEX		yylex(&yylval, &yylloc, YYLEX_PARAM)
#else
#define YYLEX		yylex(&yylval, &yylloc)
#endif
#else /* not YYLSP_NEEDED */
#ifdef YYLEX_PARAM
#define YYLEX		yylex(&yylval, YYLEX_PARAM)
#else
#define YYLEX		yylex(&yylval)
#endif
#endif /* not YYLSP_NEEDED */
#endif

/* If nonreentrant, generate the variables here */

#ifndef YYPURE

int	yychar;			/*  the lookahead symbol		*/
YYSTYPE	yylval;			/*  the semantic value of the		*/
				/*  lookahead symbol			*/

#ifdef YYLSP_NEEDED
YYLTYPE yylloc;			/*  location data for the lookahead	*/
				/*  symbol				*/
#endif

int yynerrs;			/*  number of parse errors so far       */
#endif  /* not YYPURE */

#if YYDEBUG != 0
int yydebug;			/*  nonzero means print parse trace	*/
/* Since this is uninitialized, it does not stop multiple parsers
   from coexisting.  */
#endif

/*  YYINITDEPTH indicates the initial size of the parser's stacks	*/

#ifndef	YYINITDEPTH
#define YYINITDEPTH 200
#endif

/*  YYMAXDEPTH is the maximum size the stacks can grow to
    (effective only if the built-in stack extension method is used).  */

#if YYMAXDEPTH == 0
#undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif

/* Define __yy_memcpy.  Note that the size argument
   should be passed with type unsigned int, because that is what the non-GCC
   definitions require.  With GCC, __builtin_memcpy takes an arg
   of type size_t, but it can handle unsigned int.  */

#if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
#define __yy_memcpy(TO,FROM,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
#else				/* not GNU C or C++ */
#ifndef __cplusplus

/* This is the most reliable way to avoid incompatibilities
   in available built-in functions on various systems.  */
static void
__yy_memcpy (to, from, count)
     char *to;
     char *from;
     unsigned int count;
{
  register char *f = from;
  register char *t = to;
  register int i = count;