Expect

#include <sys/strredir.h>
# ifdef SRIOCSREDIR
#  undef TIOCCONS
# endif
#endif

#include <signal.h>
/*#include <memory.h> - deprecated - ANSI C moves them into string.h */
#include "string.h"

#include <errno.h>

#ifdef NO_STDLIB_H

/*
 * Tcl's compat/stdlib.h
 */

/*
 * stdlib.h --
 *
 *	Declares facilities exported by the "stdlib" portion of
 *	the C library.  This file isn't complete in the ANSI-C
 *	sense;  it only declares things that are needed by Tcl.
 *	This file is needed even on many systems with their own
 *	stdlib.h (e.g. SunOS) because not all stdlib.h files
 *	declare all the procedures needed here (such as strtod).
 *
 * Copyright (c) 1991 The Regents of the University of California.
 * Copyright (c) 1994 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: exp_clib.c,v 5.33 2009/07/14 18:21:14 andreas_kupries Exp $
 */

#ifndef _STDLIB
#define _STDLIB

#include <tcl.h>

extern void		abort _ANSI_ARGS_((void));
extern double		atof _ANSI_ARGS_((CONST char *string));
extern int		atoi _ANSI_ARGS_((CONST char *string));
extern long		atol _ANSI_ARGS_((CONST char *string));
extern char *		calloc _ANSI_ARGS_((unsigned int numElements,
			    unsigned int size));
extern void		exit _ANSI_ARGS_((int status));
extern int		free _ANSI_ARGS_((char *blockPtr));
extern char *		getenv _ANSI_ARGS_((CONST char *name));
extern char *		malloc _ANSI_ARGS_((unsigned int numBytes));
extern void		qsort _ANSI_ARGS_((VOID *base, int n, int size,
			    int (*compar)(CONST VOID *element1, CONST VOID
			    *element2)));
extern char *		realloc _ANSI_ARGS_((char *ptr, unsigned int numBytes));
extern double		strtod _ANSI_ARGS_((CONST char *string, char **endPtr));
extern long		strtol _ANSI_ARGS_((CONST char *string, char **endPtr,
			    int base));
extern unsigned long	strtoul _ANSI_ARGS_((CONST char *string,
			    char **endPtr, int base));

#endif /* _STDLIB */

/*
 * end of Tcl's compat/stdlib.h
 */

#else
#include <stdlib.h>		/* for malloc */
#endif

#include "expect.h"
#define TclRegError exp_TclRegError

/*
 * regexp code - from tcl8.0.4/generic/regexp.c
 */

................................................................................
 *
 * *** NOTE: This code has been altered for use in MT-Sturdy Tcl ***
 * *** 1. All use of static variables has been changed to access ***
 * ***    fields of a structure.                                 ***
 * *** 2. This in addition to changes to TclRegError makes the   ***
 * ***    code multi-thread safe.                                ***
 *
 * RCS: @(#) $Id: exp_clib.c,v 5.33 2009/07/14 18:21:14 andreas_kupries Exp $
 */

#if 0
#include "tclInt.h"
#include "tclPort.h"
#endif

................................................................................
#define	MAGIC	0234


/*
 * Forward declarations for TclRegComp()'s friends.
 */

static char *		reg _ANSI_ARGS_((int paren, int *flagp,
			    struct regcomp_state *rcstate));
static char *		regatom _ANSI_ARGS_((int *flagp,
			    struct regcomp_state *rcstate));
static char *		regbranch _ANSI_ARGS_((int *flagp,
			    struct regcomp_state *rcstate));
static void		regc _ANSI_ARGS_((int b,
			    struct regcomp_state *rcstate));
static void		reginsert _ANSI_ARGS_((int op, char *opnd,
			    struct regcomp_state *rcstate));
static char *		regnext _ANSI_ARGS_((char *p));
static char *		regnode _ANSI_ARGS_((int op,

			    struct regcomp_state *rcstate));
static void 		regoptail _ANSI_ARGS_((char *p, char *val));
static char *		regpiece _ANSI_ARGS_((int *flagp,
			    struct regcomp_state *rcstate));
static void 		regtail _ANSI_ARGS_((char *p, char *val));

#ifdef STRCSPN
static int strcspn _ANSI_ARGS_((char *s1, char *s2));
#endif

/*
 - TclRegComp - compile a regular expression into internal code
 *
 * We can't allocate space until we know how big the compiled form will be,
 * but we can't compile it (and thus know how big it is) until we've got a
................................................................................
 * code and thus invalidate pointers into it.  (Note that it has to be in
 * one piece because free() must be able to free it all.)
 *
 * Beware that the optimization-preparation code in here knows about some
 * of the structure of the compiled regexp.
 */
regexp *
TclRegComp(exp)
char *exp;
{
	register regexp *r;
	register char *scan;
	register char *longest;
	register int len;
	int flags;
	struct regcomp_state state;
................................................................................
 * Caller must absorb opening parenthesis.
 *
 * Combining parenthesis handling with the base level of regular expression
 * is a trifle forced, but the need to tie the tails of the branches to what
 * follows makes it hard to avoid.
 */
static char *
reg(paren, flagp, rcstate)
int paren;			/* Parenthesized? */
int *flagp;
struct regcomp_state *rcstate;
{
	register char *ret;
	register char *br;
	register char *ender;
	register int parno = 0;
	int flags;

................................................................................

/*
 - regbranch - one alternative of an | operator
 *
 * Implements the concatenation operator.
 */
static char *
regbranch(flagp, rcstate)
int *flagp;
struct regcomp_state *rcstate;
{
	register char *ret;
	register char *chain;
	register char *latest;
	int flags;

	*flagp = WORST;		/* Tentatively. */
................................................................................
 * Note that the branching code sequences used for ? and the general cases
 * of * and + are somewhat optimized:  they use the same NOTHING node as
 * both the endmarker for their branch list and the body of the last branch.
 * It might seem that this node could be dispensed with entirely, but the
 * endmarker role is not redundant.
 */
static char *
regpiece(flagp, rcstate)
int *flagp;
struct regcomp_state *rcstate;
{
	register char *ret;
	register char op;
	register char *next;
	int flags;

	ret = regatom(&flags,rcstate);
................................................................................
 *
 * Optimization:  gobbles an entire sequence of ordinary characters so that
 * it can turn them into a single node, which is smaller to store and
 * faster to run.  Backslashed characters are exceptions, each becoming a
 * separate node; the code is simpler that way and it's not worth fixing.
 */
static char *
regatom(flagp, rcstate)
int *flagp;
struct regcomp_state *rcstate;
{
	register char *ret;
	int flags;

	*flagp = WORST;		/* Tentatively. */

	switch (*rcstate->regparse++) {
................................................................................
	return(ret);
}

/*
 - regnode - emit a node
 */
static char *			/* Location. */
regnode(op, rcstate)
int op;
struct regcomp_state *rcstate;
{
	register char *ret;
	register char *ptr;

	ret = rcstate->regcode;
	if (ret == &regdummy) {
		rcstate->regsize += 3;
................................................................................
	return(ret);
}

/*
 - regc - emit (if appropriate) a byte of code
 */
static void
regc(b, rcstate)
int b;
struct regcomp_state *rcstate;
{
	if (rcstate->regcode != &regdummy)
		*rcstate->regcode++ = (char)b;
	else
		rcstate->regsize++;
}

/*
 - reginsert - insert an operator in front of already-emitted operand
 *
 * Means relocating the operand.
 */
static void
reginsert(op, opnd, rcstate)
int op;
char *opnd;
struct regcomp_state *rcstate;
{
	register char *src;
	register char *dst;
	register char *place;

	if (rcstate->regcode == &regdummy) {
		rcstate->regsize += 3;
................................................................................
	*place = '\0';
}

/*
 - regtail - set the next-pointer at the end of a node chain
 */
static void
regtail(p, val)
char *p;
char *val;
{
	register char *scan;
	register char *temp;
	register int offset;

	if (p == &regdummy)
		return;
................................................................................
	*(scan+2) = (char)(offset&0377);
}

/*
 - regoptail - regtail on operand of first argument; nop if operandless
 */
static void
regoptail(p, val)
char *p;
char *val;
{
	/* "Operandless" and "op != BRANCH" are synonymous in practice. */
	if (p == NULL || p == &regdummy || OP(p) != BRANCH)
		return;
	regtail(OPERAND(p), val);
}

................................................................................
    char **regstartp;	/* Pointer to startp array. */
    char **regendp;		/* Ditto for endp. */
};

/*
 * Forwards.
 */
static int 		regtry _ANSI_ARGS_((regexp *prog, char *string,
			    struct regexec_state *restate));
static int 		regmatch _ANSI_ARGS_((char *prog,
			    struct regexec_state *restate));
static int 		regrepeat _ANSI_ARGS_((char *p,
			    struct regexec_state *restate));

#ifdef DEBUG
int regnarrate = 0;
void regdump _ANSI_ARGS_((regexp *r));
static char *regprop _ANSI_ARGS_((char *op));
#endif

/*
 - TclRegExec - match a regexp against a string
 */
int
TclRegExec(prog, string, start)
register regexp *prog;
register char *string;
char *start;
{
	register char *s;
	struct regexec_state state;
	struct regexec_state *restate= &state;

	/* Be paranoid... */
	if (prog == NULL || string == NULL) {
................................................................................
	return(0);
}

/*
 - regtry - try match at specific point
 */
static int			/* 0 failure, 1 success */
regtry(prog, string, restate)
regexp *prog;
char *string;
struct regexec_state *restate;
{
	register int i;
	register char **sp;
	register char **ep;

	restate->reginput = string;
	restate->regstartp = prog->startp;
................................................................................
 * node matches, call self recursively to see whether the rest matches,
 * and then act accordingly.  In practice we make some effort to avoid
 * recursion, in particular by going through "ordinary" nodes (that don't
 * need to know whether the rest of the match failed) by a loop instead of
 * by recursion.
 */
static int			/* 0 failure, 1 success */
regmatch(prog, restate)
char *prog;
struct regexec_state *restate;
{
    register char *scan;	/* Current node. */
    char *next;		/* Next node. */

    scan = prog;
#ifdef DEBUG
    if (scan != NULL && regnarrate)
................................................................................
    return(0);
}

/*
 - regrepeat - repeatedly match something simple, report how many
 */
static int
regrepeat(p, restate)
char *p;
struct regexec_state *restate;
{
	register int count = 0;
	register char *scan;
	register char *opnd;

	scan = restate->reginput;
	opnd = OPERAND(p);
................................................................................
	return(count);
}

/*
 - regnext - dig the "next" pointer out of a node
 */
static char *
regnext(p)
register char *p;
{
	register int offset;

	if (p == &regdummy)
		return(NULL);

	offset = NEXT(p);
................................................................................
		return(p-offset);
	else
		return(p+offset);
}

#ifdef DEBUG

static char *regprop();

/*
 - regdump - dump a regexp onto stdout in vaguely comprehensible form
 */
void
regdump(r)
regexp *r;
{
	register char *s;
	register char op = EXACTLY;	/* Arbitrary non-END op. */
	register char *next;


	s = r->program + 1;
................................................................................
	printf("\n");
}

/*
 - regprop - printable representation of opcode
 */
static char *
regprop(op)
char *op;
{
	register char *p;
	static char buf[50];

	(void) strcpy(buf, ":");

	switch (OP(op)) {
................................................................................
#ifdef STRCSPN
/*
 * strcspn - find length of initial segment of s1 consisting entirely
 * of characters not from s2
 */

static int
strcspn(s1, s2)
char *s1;
char *s2;
{
	register char *scan1;
	register char *scan2;
	register int count;

	count = 0;
	for (scan1 = s1; *scan1 != '\0'; scan1++) {
................................................................................
 * Side effects:
 *	The value of "string" is saved in "errMsg".
 *
 *----------------------------------------------------------------------
 */

void
exp_TclRegError(string)
    char *string;			/* Error message. */
{
    errMsg = string;
}

char *
TclGetRegError()
{
    return errMsg;
}

/*
 * end of regexp definitions and code
 */
................................................................................
 *	None.
 *
 *----------------------------------------------------------------------
 */

static
char *
Tcl_ErrnoMsg(err)
    int err;			/* Error number (such as in errno variable). */
{
    switch (err) {
#ifdef E2BIG
	case E2BIG: return "argument list too long";
#endif
#ifdef EACCES
	case EACCES: return "permission denied";
................................................................................

/*
 * stolen from exp_log.c - this function is called from the Expect library
 * but the one that the library supplies calls Tcl functions.  So we supply
 * our own.
 */

static
void
expDiagLogU(str)
     char *str;
{
  if (exp_is_debugging) {
    fprintf(stderr,str);
    if (exp_logfile) fprintf(exp_logfile,str);
  }
}

................................................................................
 * Like Tcl_StringMatch except that
 * 1) returns number of characters matched, -1 if failed.
 *	(Can return 0 on patterns like "" or "$")
 * 2) does not require pattern to match to end of string
 * 3) much of code is stolen from Tcl_StringMatch
 * 4) front-anchor is assumed (Tcl_StringMatch retries for non-front-anchor)
 */
static
int
Exp_StringMatch2(string,pattern)
    register char *string;	/* String. */
    register char *pattern;	/* Pattern, which may contain
				 * special characters. */
{
    char c2;
    int match = 0;	/* # of chars matched */

    while (1) {
	/* If at end of pattern, success! */
	if (*pattern == 0) {
................................................................................
	thisCharOK: pattern += 1;
	string += 1;
	match++;
    }
}


static
int	/* returns # of chars that matched */
Exp_StringMatch(string, pattern,offset)
char *string;
char *pattern;
int *offset;	/* offset from beginning of string where pattern matches */
{
	char *s;
	int sm;	/* count of chars matched or -1 */
	int caret = FALSE;
	int star = FALSE;

	*offset = 0;
................................................................................
	}
	return -1;
}


#define EXP_MATCH_MAX	2000
/* public */
char *exp_buffer = 0;
char *exp_buffer_end = 0;
char *exp_match = 0;
char *exp_match_end = 0;
int exp_match_max = EXP_MATCH_MAX;	/* bytes */
int exp_full_buffer = FALSE;		/* don't return on full buffer */
int exp_remove_nulls = TRUE;
int exp_timeout = 10;			/* seconds */
int exp_pty_timeout = 5;		/* seconds - see CRAY below */
int exp_autoallocpty = TRUE;		/* if TRUE, we do allocation */
int exp_pty[2];				/* master is [0], slave is [1] */
int exp_pid;
char *exp_stty_init = 0;		/* initial stty args */
int exp_ttycopy = TRUE;			/* copy tty parms from /dev/tty */
int exp_ttyinit = TRUE;			/* set tty parms to sane state */
int exp_console = FALSE;		/* redirect console */
void (*exp_child_exec_prelude)() = 0;
void (*exp_close_in_child)() = 0;

#ifdef HAVE_SIGLONGJMP
sigjmp_buf exp_readenv;		/* for interruptable read() */
#else
jmp_buf exp_readenv;		/* for interruptable read() */
#endif /* HAVE_SIGLONGJMP */

int exp_reading = FALSE;	/* whether we can longjmp or not */

int exp_is_debugging = FALSE;
FILE *exp_debugfile = 0;

FILE *exp_logfile = 0;
int exp_logfile_all = FALSE;	/* if TRUE, write log of all interactions */
int exp_loguser = TRUE;		/* if TRUE, user sees interactions on stdout */


char *exp_printify();
int exp_getptymaster();
int exp_getptyslave();

#define sysreturn(x)	return(errno = x, -1)

void exp_init_pty();

/*
   The following functions are linked from the Tcl library.  They
   don't cause anything else in the library to be dragged in, so it
   shouldn't cause any problems (e.g., bloat).

   The functions are relatively small but painful enough that I don't care
................................................................................
				/* actual size is one larger for null */
} *fs = 0;

static int fd_alloc_max = -1;	/* max fd allocated */

/* translate fd or fp to fd */
static struct f *
fdfp2f(fd,fp)
int fd;
FILE *fp;
{
	if (fd == -1) return(fs + fileno(fp));
	else return(fs + fd);
}

static struct f *
fd_new(fd)
int fd;
{
	int i, low;
	struct f *fp;
	struct f *newfs;	/* temporary, so we don't lose old fs */

	if (fd > fd_alloc_max) {
		if (!fs) {	/* no fd's yet allocated */
................................................................................
	}
	fp->buffer_end = fp->buffer;
	fp->match_end = fp->buffer;
	return fp;

}

static
void
exp_setpgrp()
{
#ifdef MIPS_BSD
    /* required on BSD side of MIPS OS <[email protected]> */
#   include <sysv/sys.s>
    syscall(SYS_setpgrp);
#endif

................................................................................
#else
    (void) setpgrp(0,0);
#endif
}

/* returns fd of master side of pty */
int
exp_spawnv(file,argv)
char *file;
char *argv[];	/* some compiler complains about **argv? */
{
	int cc;
	int errorfd;	/* place to stash fileno(stderr) in child */
			/* while we're setting up new stderr */
	int ttyfd;
	int sync_fds[2];
	int sync2_fds[2];
................................................................................
	i = exp_spawnv(argv[0],argv+1);
	free((char *)argv);
	return(i);
}

/* allow user-provided fd to be passed to expect funcs */
int
exp_spawnfd(fd)
int fd;
{
	if (!fd_new(fd)) {
		errno = ENOMEM;
		return -1;
	}
	return fd;	
}

/* remove nulls from s.  Initially, the number of chars in s is c, */
/* not strlen(s).  This count does not include the trailing null. */
/* returns number of nulls removed. */
static int
rm_nulls(s,c)
char *s;
int c;
{
	char *s2 = s;	/* points to place in original string to put */
			/* next non-null character */
	int count = 0;
	int i;

	for (i=0;i<c;i++,s++) {
................................................................................
}

static int i_read_errno;/* place to save errno, if i_read() == -1, so it
			   doesn't get overwritten before we get to read it */

/*ARGSUSED*/
static void
sigalarm_handler(n)
int n;			/* signal number, unused by us */
{
#ifdef REARM_SIG
	signal(SIGALRM,sigalarm_handler);
#endif

#ifdef HAVE_SIGLONGJMP
	siglongjmp(exp_readenv,1);
................................................................................
#else
	longjmp(exp_readenv,1);
#endif /* HAVE_SIGLONGJMP */
}

/* interruptable read */
static int
i_read(fd,fp,buffer,length,timeout)
int fd;
FILE *fp;
char *buffer;
int length;
int timeout;
{
	int cc = -2;

	/* since setjmp insists on returning 1 upon longjmp(,0), */
	/* longjmp(,2 (EXP_RESTART)) instead. */

	/* no need to set alarm if -1 (infinite) or 0 (poll with */
................................................................................

/* the key internal variables that this function depends on are:
	exp_buffer
	exp_buffer_end
	exp_match_end
*/
static int
expectv(fd,fp,ecases)
int fd;
FILE *fp;
struct exp_case *ecases;
{
	int cc = 0;		/* number of chars returned in a single read */
	int buf_length;		/* numbers of chars in exp_buffer */
	int old_length;		/* old buf_length */
	int first_time = TRUE;	/* force old buffer to be tested before */
				/* additional reads */
	int polled = 0;		/* true if poll has caused read() to occur */
................................................................................
		errno = sys_error;
		return -1;
	}
	return return_val;
}

int
exp_fexpectv(fp,ecases)
FILE *fp;
struct exp_case *ecases;
{
	return(expectv(-1,fp,ecases));
}

int
exp_expectv(fd,ecases)
int fd;
struct exp_case *ecases;
{
	return(expectv(fd,(FILE *)0,ecases));
}

/*VARARGS*/
int
exp_expectl TCL_VARARGS_DEF(int,arg1)
................................................................................
	}
	free((char *)ecases);
	return(i);
}

/* like popen(3) but works in both directions */
FILE *
exp_popen(program)
char *program;
{
	FILE *fp;
	int ec;

	if (0 > (ec = exp_spawnl("sh","sh","-c",program,(char *)0))) return(0);
	if (!(fp = fdopen(ec,"r+"))) return(0);
	setbuf(fp,(char *)0);
	return(fp);
}

int
exp_disconnect()
{
	int ttyfd;

#ifndef EALREADY
#define EALREADY 37
#endif

................................................................................
    if (exp_logfile) vfprintf(exp_logfile,fmt,args);
    va_end(args);
}

#include <ctype.h>

char *
exp_printify(s)
char *s;
{
	static int destlen = 0;
	static char *dest = 0;
	char *d;		/* ptr into dest */
	unsigned int need;

	if (s == 0) return("<null>");

#include <sys/strredir.h>
# ifdef SRIOCSREDIR
#  undef TIOCCONS
# endif
#endif

#include <signal.h>

#include <string.h>

#include <errno.h>





























































#include "expect.h"
#define TclRegError exp_TclRegError

/*
 * regexp code - from tcl8.0.4/generic/regexp.c
 */

................................................................................
 *
 * *** NOTE: This code has been altered for use in MT-Sturdy Tcl ***
 * *** 1. All use of static variables has been changed to access ***
 * ***    fields of a structure.                                 ***
 * *** 2. This in addition to changes to TclRegError makes the   ***
 * ***    code multi-thread safe.                                ***
 *
 * RCS: @(#) $Id: exp_clib.c,v 5.34 2010/03/11 21:55:19 eee Exp $
 */

#if 0
#include "tclInt.h"
#include "tclPort.h"
#endif

................................................................................
#define	MAGIC	0234


/*
 * Forward declarations for TclRegComp()'s friends.
 */


static char * reg(int paren, int *flagp, struct regcomp_state *rcstate);

static char * regatom(int *flagp, struct regcomp_state *rcstate);

static char * regbranch(int *flagp, struct regcomp_state *rcstate);

static void   regc(int b, struct regcomp_state *rcstate);

static void   reginsert(int op, char *opnd, struct regcomp_state *rcstate);


static char * regnext(char *p);
static char * regnode(int op, struct regcomp_state *rcstate);
static void   regoptail(char *p, char *val);

static char * regpiece(int *flagp, struct regcomp_state *rcstate);
static void   regtail(char *p, char *val);

#ifdef STRCSPN
static int strcspn (char *s1, char *s2);
#endif

/*
 - TclRegComp - compile a regular expression into internal code
 *
 * We can't allocate space until we know how big the compiled form will be,
 * but we can't compile it (and thus know how big it is) until we've got a
................................................................................
 * code and thus invalidate pointers into it.  (Note that it has to be in
 * one piece because free() must be able to free it all.)
 *
 * Beware that the optimization-preparation code in here knows about some
 * of the structure of the compiled regexp.
 */
regexp *
TclRegComp(char *exp)

{
	register regexp *r;
	register char *scan;
	register char *longest;
	register int len;
	int flags;
	struct regcomp_state state;
................................................................................
 * Caller must absorb opening parenthesis.
 *
 * Combining parenthesis handling with the base level of regular expression
 * is a trifle forced, but the need to tie the tails of the branches to what
 * follows makes it hard to avoid.
 */
static char *



reg(int paren, int *flagp, struct regcomp_state *rcstate)
{
	register char *ret;
	register char *br;
	register char *ender;
	register int parno = 0;
	int flags;

................................................................................

/*
 - regbranch - one alternative of an | operator
 *
 * Implements the concatenation operator.
 */
static char *


regbranch(int *flagp, struct regcomp_state *rcstate)
{
	register char *ret;
	register char *chain;
	register char *latest;
	int flags;

	*flagp = WORST;		/* Tentatively. */
................................................................................
 * Note that the branching code sequences used for ? and the general cases
 * of * and + are somewhat optimized:  they use the same NOTHING node as
 * both the endmarker for their branch list and the body of the last branch.
 * It might seem that this node could be dispensed with entirely, but the
 * endmarker role is not redundant.
 */
static char *


regpiece(int *flagp, struct regcomp_state *rcstate)
{
	register char *ret;
	register char op;
	register char *next;
	int flags;

	ret = regatom(&flags,rcstate);
................................................................................
 *
 * Optimization:  gobbles an entire sequence of ordinary characters so that
 * it can turn them into a single node, which is smaller to store and
 * faster to run.  Backslashed characters are exceptions, each becoming a
 * separate node; the code is simpler that way and it's not worth fixing.
 */
static char *


regatom(int *flagp, struct regcomp_state *rcstate)
{
	register char *ret;
	int flags;

	*flagp = WORST;		/* Tentatively. */

	switch (*rcstate->regparse++) {
................................................................................
	return(ret);
}

/*
 - regnode - emit a node
 */
static char *			/* Location. */


regnode(int op, struct regcomp_state *rcstate)
{
	register char *ret;
	register char *ptr;

	ret = rcstate->regcode;
	if (ret == &regdummy) {
		rcstate->regsize += 3;
................................................................................
	return(ret);
}

/*
 - regc - emit (if appropriate) a byte of code
 */
static void


regc(int b; struct regcomp_state *rcstate)
{
	if (rcstate->regcode != &regdummy)
		*rcstate->regcode++ = (char)b;
	else
		rcstate->regsize++;
}

/*
 - reginsert - insert an operator in front of already-emitted operand
 *
 * Means relocating the operand.
 */
static void



reginsert(int op, char *opnd, struct regcomp_state *rcstate)
{
	register char *src;
	register char *dst;
	register char *place;

	if (rcstate->regcode == &regdummy) {
		rcstate->regsize += 3;
................................................................................
	*place = '\0';
}

/*
 - regtail - set the next-pointer at the end of a node chain
 */
static void


regtail(char *p, char *val)
{
	register char *scan;
	register char *temp;
	register int offset;

	if (p == &regdummy)
		return;
................................................................................
	*(scan+2) = (char)(offset&0377);
}

/*
 - regoptail - regtail on operand of first argument; nop if operandless
 */
static void


regoptail(char *p, char *val)
{
	/* "Operandless" and "op != BRANCH" are synonymous in practice. */
	if (p == NULL || p == &regdummy || OP(p) != BRANCH)
		return;
	regtail(OPERAND(p), val);
}

................................................................................
    char **regstartp;	/* Pointer to startp array. */
    char **regendp;		/* Ditto for endp. */
};

/*
 * Forwards.
 */

static int regtry (regexp *prog, char *string, struct regexec_state *restate);

static int regmatch (char *prog, struct regexec_state *restate);

static int regrepeat (char *p, struct regexec_state *restate);

#ifdef DEBUG
int regnarrate = 0;
void regdump (regexp *r);
static char *regprop (char *op);
#endif

/*
 - TclRegExec - match a regexp against a string
 */
int

TclRegExec(register regexp *prog, register char *string, char *start)


{
	register char *s;
	struct regexec_state state;
	struct regexec_state *restate= &state;

	/* Be paranoid... */
	if (prog == NULL || string == NULL) {
................................................................................
	return(0);
}

/*
 - regtry - try match at specific point
 */
static int			/* 0 failure, 1 success */



regtry(regexp *prog, char *string, struct regexec_state *restate)
{
	register int i;
	register char **sp;
	register char **ep;

	restate->reginput = string;
	restate->regstartp = prog->startp;
................................................................................
 * node matches, call self recursively to see whether the rest matches,
 * and then act accordingly.  In practice we make some effort to avoid
 * recursion, in particular by going through "ordinary" nodes (that don't
 * need to know whether the rest of the match failed) by a loop instead of
 * by recursion.
 */
static int			/* 0 failure, 1 success */


regmatch(char *prog, struct regexec_state *restate)
{
    register char *scan;	/* Current node. */
    char *next;		/* Next node. */

    scan = prog;
#ifdef DEBUG
    if (scan != NULL && regnarrate)
................................................................................
    return(0);
}

/*
 - regrepeat - repeatedly match something simple, report how many
 */
static int


regrepeat(char *p, struct regexec_state *restate)
{
	register int count = 0;
	register char *scan;
	register char *opnd;

	scan = restate->reginput;
	opnd = OPERAND(p);
................................................................................
	return(count);
}

/*
 - regnext - dig the "next" pointer out of a node
 */
static char *

regnext(register char *p)
{
	register int offset;

	if (p == &regdummy)
		return(NULL);

	offset = NEXT(p);
................................................................................
		return(p-offset);
	else
		return(p+offset);
}

#ifdef DEBUG

static char *regprop(char *);

/*
 - regdump - dump a regexp onto stdout in vaguely comprehensible form
 */
void
regdump(regexp *r)

{
	register char *s;
	register char op = EXACTLY;	/* Arbitrary non-END op. */
	register char *next;


	s = r->program + 1;
................................................................................
	printf("\n");
}

/*
 - regprop - printable representation of opcode
 */
static char *

regprop(char *op)
{
	register char *p;
	static char buf[50];

	(void) strcpy(buf, ":");

	switch (OP(op)) {
................................................................................
#ifdef STRCSPN
/*
 * strcspn - find length of initial segment of s1 consisting entirely
 * of characters not from s2
 */

static int

strcspn(char *s1, char *s2)

{
	register char *scan1;
	register char *scan2;
	register int count;

	count = 0;
	for (scan1 = s1; *scan1 != '\0'; scan1++) {
................................................................................
 * Side effects:
 *	The value of "string" is saved in "errMsg".
 *
 *----------------------------------------------------------------------
 */

void
exp_TclRegError(char *string)

{
    errMsg = string;
}

char *
TclGetRegError(void)
{
    return errMsg;
}

/*
 * end of regexp definitions and code
 */
................................................................................
 *	None.
 *
 *----------------------------------------------------------------------
 */

static
char *
Tcl_ErrnoMsg(int err)

{
    switch (err) {
#ifdef E2BIG
	case E2BIG: return "argument list too long";
#endif
#ifdef EACCES
	case EACCES: return "permission denied";
................................................................................

/*
 * stolen from exp_log.c - this function is called from the Expect library
 * but the one that the library supplies calls Tcl functions.  So we supply
 * our own.
 */

static void

expDiagLogU(char *str)

{
  if (exp_is_debugging) {
    fprintf(stderr,str);
    if (exp_logfile) fprintf(exp_logfile,str);
  }
}

................................................................................
 * Like Tcl_StringMatch except that
 * 1) returns number of characters matched, -1 if failed.
 *	(Can return 0 on patterns like "" or "$")
 * 2) does not require pattern to match to end of string
 * 3) much of code is stolen from Tcl_StringMatch
 * 4) front-anchor is assumed (Tcl_StringMatch retries for non-front-anchor)
 */
static int


Exp_StringMatch2(register char *string, register char *pattern)


{
    char c2;
    int match = 0;	/* # of chars matched */

    while (1) {
	/* If at end of pattern, success! */
	if (*pattern == 0) {
................................................................................
	thisCharOK: pattern += 1;
	string += 1;
	match++;
    }
}



static int	/* returns # of chars that matched */


Exp_StringMatch(char *string, char *pattern, int *offset)

{
	char *s;
	int sm;	/* count of chars matched or -1 */
	int caret = FALSE;
	int star = FALSE;

	*offset = 0;
................................................................................
	}
	return -1;
}


#define EXP_MATCH_MAX	2000
/* public */
char *exp_buffer = NULL;
char *exp_buffer_end = NULL;
char *exp_match = NULL;
char *exp_match_end = NULL;
int exp_match_max = EXP_MATCH_MAX;	/* bytes */
int exp_full_buffer = FALSE;		/* don't return on full buffer */
int exp_remove_nulls = TRUE;
int exp_timeout = 10;			/* seconds */
int exp_pty_timeout = 5;		/* seconds - see CRAY below */
int exp_autoallocpty = TRUE;		/* if TRUE, we do allocation */
int exp_pty[2];				/* master is [0], slave is [1] */
int exp_pid;
char *exp_stty_init = NULL;		/* initial stty args */
int exp_ttycopy = TRUE;			/* copy tty parms from /dev/tty */
int exp_ttyinit = TRUE;			/* set tty parms to sane state */
int exp_console = FALSE;		/* redirect console */
void (*exp_child_exec_prelude)() = NULL;
void (*exp_close_in_child)() = NULL;

#ifdef HAVE_SIGLONGJMP
sigjmp_buf exp_readenv;		/* for interruptable read() */
#else
jmp_buf exp_readenv;		/* for interruptable read() */
#endif /* HAVE_SIGLONGJMP */

int exp_reading = FALSE;	/* whether we can longjmp or not */

int exp_is_debugging = FALSE;
FILE *exp_debugfile = NULL;

FILE *exp_logfile = NULL;
int exp_logfile_all = FALSE;	/* if TRUE, write log of all interactions */
int exp_loguser = TRUE;		/* if TRUE, user sees interactions on stdout */


char *exp_printify(char *);
int exp_getptymaster(void);
int exp_getptyslave(int, int, CONST char *);

#define sysreturn(x)	return(errno = x, -1)

void exp_init_pty(void);

/*
   The following functions are linked from the Tcl library.  They
   don't cause anything else in the library to be dragged in, so it
   shouldn't cause any problems (e.g., bloat).

   The functions are relatively small but painful enough that I don't care
................................................................................
				/* actual size is one larger for null */
} *fs = 0;

static int fd_alloc_max = -1;	/* max fd allocated */

/* translate fd or fp to fd */
static struct f *


fdfp2f(int fd, FILE *fp)
{
	if (fd == -1) return(fs + fileno(fp));
	else return(fs + fd);
}

static struct f *

fd_new(int fd)
{
	int i, low;
	struct f *fp;
	struct f *newfs;	/* temporary, so we don't lose old fs */

	if (fd > fd_alloc_max) {
		if (!fs) {	/* no fd's yet allocated */
................................................................................
	}
	fp->buffer_end = fp->buffer;
	fp->match_end = fp->buffer;
	return fp;

}

static void

exp_setpgrp(void)
{
#ifdef MIPS_BSD
    /* required on BSD side of MIPS OS <[email protected]> */
#   include <sysv/sys.s>
    syscall(SYS_setpgrp);
#endif

................................................................................
#else
    (void) setpgrp(0,0);
#endif
}

/* returns fd of master side of pty */
int

exp_spawnv(char *file, char *argv[])

{
	int cc;
	int errorfd;	/* place to stash fileno(stderr) in child */
			/* while we're setting up new stderr */
	int ttyfd;
	int sync_fds[2];
	int sync2_fds[2];
................................................................................
	i = exp_spawnv(argv[0],argv+1);
	free((char *)argv);
	return(i);
}

/* allow user-provided fd to be passed to expect funcs */
int
exp_spawnfd(int fd)

{
	if (!fd_new(fd)) {
		errno = ENOMEM;
		return -1;
	}
	return fd;	
}

/* remove nulls from s.  Initially, the number of chars in s is c, */
/* not strlen(s).  This count does not include the trailing null. */
/* returns number of nulls removed. */
static int
rm_nulls(char *s, int c)


{
	char *s2 = s;	/* points to place in original string to put */
			/* next non-null character */
	int count = 0;
	int i;

	for (i=0;i<c;i++,s++) {
................................................................................
}

static int i_read_errno;/* place to save errno, if i_read() == -1, so it
			   doesn't get overwritten before we get to read it */

/*ARGSUSED*/
static void
sigalarm_handler(int n)

{
#ifdef REARM_SIG
	signal(SIGALRM,sigalarm_handler);
#endif

#ifdef HAVE_SIGLONGJMP
	siglongjmp(exp_readenv,1);
................................................................................
#else
	longjmp(exp_readenv,1);
#endif /* HAVE_SIGLONGJMP */
}

/* interruptable read */
static int
i_read(int fd, FILE *fp, char *buffer, int length, int timeout)





{
	int cc = -2;

	/* since setjmp insists on returning 1 upon longjmp(,0), */
	/* longjmp(,2 (EXP_RESTART)) instead. */

	/* no need to set alarm if -1 (infinite) or 0 (poll with */
................................................................................

/* the key internal variables that this function depends on are:
	exp_buffer
	exp_buffer_end
	exp_match_end
*/
static int



expectv(int fd, FILE *fp, struct exp_case *ecases)
{
	int cc = 0;		/* number of chars returned in a single read */
	int buf_length;		/* numbers of chars in exp_buffer */
	int old_length;		/* old buf_length */
	int first_time = TRUE;	/* force old buffer to be tested before */
				/* additional reads */
	int polled = 0;		/* true if poll has caused read() to occur */
................................................................................
		errno = sys_error;
		return -1;
	}
	return return_val;
}

int


exp_fexpectv(FILE *fp, struct exp_case *ecases)
{
	return(expectv(-1,fp,ecases));
}

int


exp_expectv(int fd, struct exp_case *ecases)
{
	return(expectv(fd,(FILE *)0,ecases));
}

/*VARARGS*/
int
exp_expectl TCL_VARARGS_DEF(int,arg1)
................................................................................
	}
	free((char *)ecases);
	return(i);
}

/* like popen(3) but works in both directions */
FILE *

exp_popen(char *program)
{
	FILE *fp;
	int ec;

	if (0 > (ec = exp_spawnl("sh","sh","-c",program,(char *)0))) return(0);
	if (!(fp = fdopen(ec,"r+"))) return(0);
	setbuf(fp,(char *)0);
	return(fp);
}

int
exp_disconnect(void)
{
	int ttyfd;

#ifndef EALREADY
#define EALREADY 37
#endif

................................................................................
    if (exp_logfile) vfprintf(exp_logfile,fmt,args);
    va_end(args);
}

#include <ctype.h>

char *
exp_printify(char *s)

{
	static int destlen = 0;
	static char *dest = 0;
	char *d;		/* ptr into dest */
	unsigned int need;

	if (s == 0) return("<null>");

    return esPtr->fdin;
#else
    return name[0];	/* pacify lint, use arg and return something */
#endif
}

static
void
expBusy(ExpState *esPtr)
{
    int x = open("/dev/null",0);
    if (x != esPtr->fdin) {
	fcntl(x,F_DUPFD,esPtr->fdin);
	close(x);
    }
................................................................................
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return (tsdPtr->stdinout == esPtr);
}

ExpState *
expStdinoutGet()
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return tsdPtr->stdinout;
}

ExpState *
expDevttyGet()
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return tsdPtr->devtty;
}

void
................................................................................
    int pgrp = getpgrp(0);
    if (-1 == ioctl(fd,TIOCSETPGRP,&pgrp)) perror("TIOCSETPGRP");
    if (-1 == ioctl(fd,TIOCSPGRP,&pgrp)) perror("TIOCSPGRP");
    if (-1 == tcsetpgrp(fd,pgrp)) perror("tcsetpgrp");
}
#endif

static
void
expSetpgrp()
{
#ifdef MIPS_BSD
    /* required on BSD side of MIPS OS <[email protected]> */
#   include <sysv/sys.s>
    syscall(SYS_setpgrp);
#endif

................................................................................
{
    /* current implementation is pathetic but works */
    /* 99991 is largest prime in my CRC - can't hurt, eh? */
    return((float)(1+(rand()%99991))/99991.0);
}

void
exp_init_unit_random()
{
    srand(getpid());
}

/* This function is my implementation of the Weibull distribution. */
/* I've added a max time and an "alpha_eow" that captures the slight */
/* but noticable change in human typists when hitting end-of-word */
................................................................................
struct exp_i *exp_i_pool = 0;
struct exp_state_list *exp_state_list_pool = 0;

#define EXP_I_INIT_COUNT	10
#define EXP_FD_INIT_COUNT	10

struct exp_i *
exp_new_i()
{
    int n;
    struct exp_i *i;

    if (!exp_i_pool) {
	/* none avail, generate some new ones */
	exp_i_pool = i = (struct exp_i *)ckalloc(
................................................................................
    int pid;
    WAIT_STATUS_TYPE wait_status;
    enum {not_in_use, wait_done, wait_not_done} link_status;
    struct forked_proc *next;
} *forked_proc_base = 0;

void
fork_clear_all()
{
    struct forked_proc *f;

    for (f=forked_proc_base;f;f=f->next) {
	f->link_status = not_in_use;
    }
}
................................................................................
static int
Exp_WaitObjCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *CONST objv[])		/* Argument objects. */
{
    char *chanName = 0;
    struct ExpState *esPtr;
    struct forked_proc *fp = 0;	/* handle to a pure forked proc */
    struct ExpState esTmp;	/* temporary memory for either f or fp */
    char spawn_id[20];

    int nowait = FALSE;
    int result = 0;		/* 0 means child was successfully waited on */
				/* -1 means an error occurred */
				/* -2 means no eligible children to wait on */

................................................................................
	if (*string != *flag) return 0;
    }
    if (*string == '\0' && minlen <= 0) return 1;
    return 0;
}

void
exp_create_commands(interp,c)
    Tcl_Interp *interp;
    struct exp_cmd_data *c;
{
    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
    Namespace *currNsPtr   = (Namespace *) Tcl_GetCurrentNamespace(interp);
    char cmdnamebuf[80];

    for (;c->name;c++) {
	/* if already defined, don't redefine */

    return esPtr->fdin;
#else
    return name[0];	/* pacify lint, use arg and return something */
#endif
}

static void

expBusy(ExpState *esPtr)
{
    int x = open("/dev/null",0);
    if (x != esPtr->fdin) {
	fcntl(x,F_DUPFD,esPtr->fdin);
	close(x);
    }
................................................................................
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return (tsdPtr->stdinout == esPtr);
}

ExpState *
expStdinoutGet(void)
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return tsdPtr->stdinout;
}

ExpState *
expDevttyGet(void)
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    return tsdPtr->devtty;
}

void
................................................................................
    int pgrp = getpgrp(0);
    if (-1 == ioctl(fd,TIOCSETPGRP,&pgrp)) perror("TIOCSETPGRP");
    if (-1 == ioctl(fd,TIOCSPGRP,&pgrp)) perror("TIOCSPGRP");
    if (-1 == tcsetpgrp(fd,pgrp)) perror("tcsetpgrp");
}
#endif

static void

expSetpgrp(void)
{
#ifdef MIPS_BSD
    /* required on BSD side of MIPS OS <[email protected]> */
#   include <sysv/sys.s>
    syscall(SYS_setpgrp);
#endif

................................................................................
{
    /* current implementation is pathetic but works */
    /* 99991 is largest prime in my CRC - can't hurt, eh? */
    return((float)(1+(rand()%99991))/99991.0);
}

void
exp_init_unit_random(void)
{
    srand(getpid());
}

/* This function is my implementation of the Weibull distribution. */
/* I've added a max time and an "alpha_eow" that captures the slight */
/* but noticable change in human typists when hitting end-of-word */
................................................................................
struct exp_i *exp_i_pool = 0;
struct exp_state_list *exp_state_list_pool = 0;

#define EXP_I_INIT_COUNT	10
#define EXP_FD_INIT_COUNT	10

struct exp_i *
exp_new_i(void)
{
    int n;
    struct exp_i *i;

    if (!exp_i_pool) {
	/* none avail, generate some new ones */
	exp_i_pool = i = (struct exp_i *)ckalloc(
................................................................................
    int pid;
    WAIT_STATUS_TYPE wait_status;
    enum {not_in_use, wait_done, wait_not_done} link_status;
    struct forked_proc *next;
} *forked_proc_base = 0;

void
fork_clear_all(void)
{
    struct forked_proc *f;

    for (f=forked_proc_base;f;f=f->next) {
	f->link_status = not_in_use;
    }
}
................................................................................
static int
Exp_WaitObjCmd(
    ClientData clientData,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *CONST objv[])		/* Argument objects. */
{
    char *chanName = NULL;
    struct ExpState *esPtr;
    struct forked_proc *fp = NULL;	/* handle to a pure forked proc */
    struct ExpState esTmp;		/* temporary memory for either f or fp */
    char spawn_id[20];

    int nowait = FALSE;
    int result = 0;		/* 0 means child was successfully waited on */
				/* -1 means an error occurred */
				/* -2 means no eligible children to wait on */

................................................................................
	if (*string != *flag) return 0;
    }
    if (*string == '\0' && minlen <= 0) return 1;
    return 0;
}

void


exp_create_commands(Tcl_Interp *interp, struct exp_cmd_data *c)
{
    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
    Namespace *currNsPtr   = (Namespace *) Tcl_GetCurrentNamespace(interp);
    char cmdnamebuf[80];

    for (;c->name;c++) {
	/* if already defined, don't redefine */

# undef panic
#endif

#include <tclPort.h>

#define EXP_CHANNELNAMELEN (16 + TCL_INTEGER_SPACE)

EXTERN char *		exp_get_var _ANSI_ARGS_((Tcl_Interp *,char *));

EXTERN int exp_default_match_max;
EXTERN int exp_default_parity;
EXTERN int exp_default_rm_nulls;
EXTERN int exp_default_close_on_eof;

EXTERN int		exp_one_arg_braced _ANSI_ARGS_((Tcl_Obj *));

EXTERN Tcl_Obj*		exp_eval_with_one_arg _ANSI_ARGS_((ClientData,
				Tcl_Interp *, struct Tcl_Obj * CONST objv[]));

EXTERN void		exp_lowmemcpy _ANSI_ARGS_((char *,char *,int));

EXTERN int exp_flageq_code _ANSI_ARGS_((char *,char *,int));

#define exp_flageq(flag,string,minlen) \
(((string)[0] == (flag)[0]) && (exp_flageq_code(((flag)+1),((string)+1),((minlen)-1))))

/* exp_flageq for single char flags */
#define exp_flageq1(flag,string) \
	((string[0] == flag) && (string[1] == '\0'))
................................................................................

#define EXP_TEMPORARY	1	/* expect */
#define EXP_PERMANENT	2	/* expect_after, expect_before, expect_bg */

#define EXP_DIRECT	1
#define EXP_INDIRECT	2

EXTERN void		expAdjust _ANSI_ARGS_((ExpState *));
EXTERN int		expWriteChars _ANSI_ARGS_((ExpState *,char *,int));
EXTERN int		expWriteCharsUni _ANSI_ARGS_((ExpState *,Tcl_UniChar *,int));
EXTERN void		exp_buffer_shuffle _ANSI_ARGS_((Tcl_Interp *,ExpState *,int,char *,char *));
EXTERN int		exp_close _ANSI_ARGS_((Tcl_Interp *,ExpState *));
EXTERN void		exp_close_all _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_ecmd_remove_fd_direct_and_indirect 
				_ANSI_ARGS_((Tcl_Interp *,int));
EXTERN void		exp_trap_on _ANSI_ARGS_((int));
EXTERN int		exp_trap_off _ANSI_ARGS_((char *));

EXTERN void		exp_strftime(char *format, const struct tm *timeptr,Tcl_DString *dstring);

#define exp_deleteProc (void (*)())0
#define exp_deleteObjProc (void (*)())0

EXTERN int expect_key;
EXTERN int exp_configure_count;	/* # of times descriptors have been closed */
				/* or indirect lists have been changed */
EXTERN int exp_nostack_dump;	/* TRUE if user has requested unrolling of */
				/* stack with no trace */

EXTERN void		exp_init_pty _ANSI_ARGS_((void));
EXTERN void		exp_pty_exit _ANSI_ARGS_((void));
EXTERN void		exp_init_tty _ANSI_ARGS_((void));
EXTERN void		exp_init_stdio _ANSI_ARGS_((void));
/*EXTERN void		exp_init_expect _ANSI_ARGS_((Tcl_Interp *));*/
EXTERN void		exp_init_spawn_ids _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_spawn_id_vars _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_trap _ANSI_ARGS_((void));
EXTERN void		exp_init_send _ANSI_ARGS_((void));
EXTERN void		exp_init_unit_random _ANSI_ARGS_((void));
EXTERN void		exp_init_sig _ANSI_ARGS_((void));
EXTERN void		expChannelInit _ANSI_ARGS_((void));
EXTERN int		expChannelCountGet _ANSI_ARGS_((void));

EXTERN int		exp_tcl2_returnvalue _ANSI_ARGS_((int));
EXTERN int		exp_2tcl_returnvalue _ANSI_ARGS_((int));

EXTERN void		exp_rearm_sigchld _ANSI_ARGS_((Tcl_Interp *));
EXTERN int		exp_string_to_signal _ANSI_ARGS_((Tcl_Interp *,char *));

EXTERN char *exp_onexit_action;

#define exp_new(x)	(x *)malloc(sizeof(x))

struct exp_state_list {
	ExpState *esPtr;
................................................................................

	int ecount;	/* # of ecases this is used by */

	struct exp_state_list *state_list;
	struct exp_i *next;
};

EXTERN struct exp_i *	exp_new_i_complex _ANSI_ARGS_((Tcl_Interp *,
					char *, int, Tcl_VarTraceProc *));
EXTERN struct exp_i *	exp_new_i_simple _ANSI_ARGS_((ExpState *,int));
EXTERN struct exp_state_list *exp_new_state _ANSI_ARGS_((ExpState *));
EXTERN void		exp_free_i _ANSI_ARGS_((Tcl_Interp *,struct exp_i *,
					Tcl_VarTraceProc *));
EXTERN void		exp_free_state _ANSI_ARGS_((struct exp_state_list *));
EXTERN void		exp_free_state_single _ANSI_ARGS_((struct exp_state_list *));
EXTERN int		exp_i_update _ANSI_ARGS_((Tcl_Interp *,
					struct exp_i *));

/*
 * definitions for creating commands
 */

#define EXP_NOPREFIX	1	/* don't define with "exp_" prefix */
#define EXP_REDEFINE	2	/* stomp on old commands with same name */
................................................................................
	char		*name;
	Tcl_ObjCmdProc	*objproc;
	Tcl_CmdProc	*proc;
	ClientData	data;
	int 		flags;
};

EXTERN void		exp_create_commands _ANSI_ARGS_((Tcl_Interp *,
						struct exp_cmd_data *));
EXTERN void		exp_init_main_cmds _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_expect_cmds _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_most_cmds _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_trap_cmds _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_interact_cmds _ANSI_ARGS_((Tcl_Interp *));
EXTERN void		exp_init_tty_cmds();

EXTERN ExpState *	expStateCheck _ANSI_ARGS_((Tcl_Interp *,ExpState *,int,int,char *));
EXTERN ExpState *       expStateCurrent _ANSI_ARGS_((Tcl_Interp *,int,int,int));
EXTERN ExpState *       expStateFromChannelName _ANSI_ARGS_((Tcl_Interp *,char *,int,int,int,char *));
EXTERN void		expStateFree _ANSI_ARGS_((ExpState *));

EXTERN ExpState *	expCreateChannel _ANSI_ARGS_((Tcl_Interp *,int,int,int));
EXTERN ExpState *	expWaitOnAny _ANSI_ARGS_((void));
EXTERN ExpState *	expWaitOnOne _ANSI_ARGS_((void));
EXTERN void		expExpectVarsInit _ANSI_ARGS_((void));
EXTERN int		expStateAnyIs _ANSI_ARGS_((ExpState *));
EXTERN int		expDevttyIs _ANSI_ARGS_((ExpState *));
EXTERN int		expStdinoutIs _ANSI_ARGS_((ExpState *));
EXTERN ExpState *	expStdinoutGet _ANSI_ARGS_((void));
EXTERN ExpState *	expDevttyGet _ANSI_ARGS_((void));

/* generic functions that really should be provided by Tcl */
#if 0 /* Redefined as macros. */
EXTERN int		expSizeGet _ANSI_ARGS_((ExpState *));
EXTERN int		expSizeZero _ANSI_ARGS_((ExpState *));
#else
#define expSizeGet(esPtr)  ((esPtr)->input.use)
#define expSizeZero(esPtr) (((esPtr)->input.use) == 0)
#endif

#define EXP_CMDINFO_CLOSE  "expect/cmdinfo/close"
#define EXP_CMDINFO_RETURN "expect/cmdinfo/return"

# undef panic
#endif

#include <tclPort.h>

#define EXP_CHANNELNAMELEN (16 + TCL_INTEGER_SPACE)

EXTERN char *		exp_get_var (Tcl_Interp *,char *);

EXTERN int exp_default_match_max;
EXTERN int exp_default_parity;
EXTERN int exp_default_rm_nulls;
EXTERN int exp_default_close_on_eof;

EXTERN int		exp_one_arg_braced (Tcl_Obj *);


EXTERN Tcl_Obj*		exp_eval_with_one_arg (ClientData, Tcl_Interp *, struct Tcl_Obj * CONST objv[]);

EXTERN void		exp_lowmemcpy (char *,char *,int);

EXTERN int exp_flageq_code (char *,char *,int);

#define exp_flageq(flag,string,minlen) \
(((string)[0] == (flag)[0]) && (exp_flageq_code(((flag)+1),((string)+1),((minlen)-1))))

/* exp_flageq for single char flags */
#define exp_flageq1(flag,string) \
	((string[0] == flag) && (string[1] == '\0'))
................................................................................

#define EXP_TEMPORARY	1	/* expect */
#define EXP_PERMANENT	2	/* expect_after, expect_before, expect_bg */

#define EXP_DIRECT	1
#define EXP_INDIRECT	2

EXTERN void		expAdjust (ExpState *);
EXTERN int		expWriteChars (ExpState *,char *,int);
EXTERN int		expWriteCharsUni (ExpState *,Tcl_UniChar *,int);
EXTERN void		exp_buffer_shuffle (Tcl_Interp *,ExpState *,int,char *,char *);
EXTERN int		exp_close (Tcl_Interp *,ExpState *);
EXTERN void		exp_close_all (Tcl_Interp *);
EXTERN void		exp_ecmd_remove_fd_direct_and_indirect (Tcl_Interp *,int);

EXTERN void		exp_trap_on (int);
EXTERN int		exp_trap_off (char *);

EXTERN void		exp_strftime(char *format, const struct tm *timeptr,Tcl_DString *dstring);

#define exp_deleteProc (void (*)())0
#define exp_deleteObjProc (void (*)())0

EXTERN int expect_key;
EXTERN int exp_configure_count;	/* # of times descriptors have been closed */
				/* or indirect lists have been changed */
EXTERN int exp_nostack_dump;	/* TRUE if user has requested unrolling of */
				/* stack with no trace */

EXTERN void		exp_init_pty (void);
EXTERN void		exp_pty_exit (void);
EXTERN void		exp_init_tty (void);
EXTERN void		exp_init_stdio (void);
/*EXTERN void		exp_init_expect (Tcl_Interp *);*/
EXTERN void		exp_init_spawn_ids (Tcl_Interp *);
EXTERN void		exp_init_spawn_id_vars (Tcl_Interp *);
EXTERN void		exp_init_trap (void);
EXTERN void		exp_init_send (void);
EXTERN void		exp_init_unit_random (void);
EXTERN void		exp_init_sig (void);
EXTERN void		expChannelInit (void);
EXTERN int		expChannelCountGet (void);

EXTERN int		exp_tcl2_returnvalue (int);
EXTERN int		exp_2tcl_returnvalue (int);

EXTERN void		exp_rearm_sigchld (Tcl_Interp *);
EXTERN int		exp_string_to_signal (Tcl_Interp *,char *);

EXTERN char *exp_onexit_action;

#define exp_new(x)	(x *)malloc(sizeof(x))

struct exp_state_list {
	ExpState *esPtr;
................................................................................

	int ecount;	/* # of ecases this is used by */

	struct exp_state_list *state_list;
	struct exp_i *next;
};


EXTERN struct exp_i *	exp_new_i_complex (Tcl_Interp *, char *, int, Tcl_VarTraceProc *);
EXTERN struct exp_i *	exp_new_i_simple (ExpState *,int);
EXTERN struct exp_state_list *exp_new_state (ExpState *);
EXTERN void		exp_free_i (Tcl_Interp *,struct exp_i *, Tcl_VarTraceProc *);

EXTERN void		exp_free_state (struct exp_state_list *);
EXTERN void		exp_free_state_single (struct exp_state_list *);
EXTERN int		exp_i_update (Tcl_Interp *, struct exp_i *);


/*
 * definitions for creating commands
 */

#define EXP_NOPREFIX	1	/* don't define with "exp_" prefix */
#define EXP_REDEFINE	2	/* stomp on old commands with same name */
................................................................................
	char		*name;
	Tcl_ObjCmdProc	*objproc;
	Tcl_CmdProc	*proc;
	ClientData	data;
	int 		flags;
};

EXTERN void		exp_create_commands (Tcl_Interp *, struct exp_cmd_data *);

EXTERN void		exp_init_main_cmds (Tcl_Interp *);
EXTERN void		exp_init_expect_cmds (Tcl_Interp *);
EXTERN void		exp_init_most_cmds (Tcl_Interp *);
EXTERN void		exp_init_trap_cmds (Tcl_Interp *);
EXTERN void		exp_init_interact_cmds (Tcl_Interp *);
EXTERN void		exp_init_tty_cmds();

EXTERN ExpState *	expStateCheck (Tcl_Interp *,ExpState *,int,int,char *);
EXTERN ExpState *       expStateCurrent (Tcl_Interp *,int,int,int);
EXTERN ExpState *       expStateFromChannelName (Tcl_Interp *,char *,int,int,int,char *);
EXTERN void		expStateFree (ExpState *);

EXTERN ExpState *	expCreateChannel (Tcl_Interp *,int,int,int);
EXTERN ExpState *	expWaitOnAny (void);
EXTERN ExpState *	expWaitOnOne (void);
EXTERN void		expExpectVarsInit (void);
EXTERN int		expStateAnyIs (ExpState *);
EXTERN int		expDevttyIs (ExpState *);
EXTERN int		expStdinoutIs (ExpState *);
EXTERN ExpState *	expStdinoutGet (void);
EXTERN ExpState *	expDevttyGet (void);

/* generic functions that really should be provided by Tcl */
#if 0 /* Redefined as macros. */
EXTERN int		expSizeGet (ExpState *);
EXTERN int		expSizeZero (ExpState *);
#else
#define expSizeGet(esPtr)  ((esPtr)->input.use)
#define expSizeZero(esPtr) (((esPtr)->input.use) == 0)
#endif

#define EXP_CMDINFO_CLOSE  "expect/cmdinfo/close"
#define EXP_CMDINFO_RETURN "expect/cmdinfo/return"

#include "tcl.h"
#include "exp_rename.h"
#include "exp_prog.h"
#include "exp_command.h"
#include "exp_log.h"

static void
exp_console_manipulation_failed(s)
char *s;
{
    expErrorLog("expect: spawn: cannot %s console, check permissions of /dev/console\n",s);
    exit(-1);
}

void
exp_console_set()
{
#ifdef SRIOCSREDIR
	int fd;

	if ((fd = open("/dev/console", O_RDONLY)) == -1) {
		exp_console_manipulation_failed("open");
	}

#include "tcl.h"
#include "exp_rename.h"
#include "exp_prog.h"
#include "exp_command.h"
#include "exp_log.h"

static void
exp_console_manipulation_failed(char *s)

{
    expErrorLog("expect: spawn: cannot %s console, check permissions of /dev/console\n",s);
    exit(-1);
}

void
exp_console_set(void)
{
#ifdef SRIOCSREDIR
	int fd;

	if ((fd = open("/dev/console", O_RDONLY)) == -1) {
		exp_console_manipulation_failed("open");
	}

typedef struct ThreadSpecificData {
    int rr;		/* round robin ptr */
} ThreadSpecificData;

static Tcl_ThreadDataKey dataKey;

void
exp_event_disarm_bg(esPtr)
ExpState *esPtr;
{
    Tcl_DeleteChannelHandler(esPtr->channel,exp_background_channelhandler,(ClientData)esPtr);
}

static void
exp_arm_background_channelhandler_force(esPtr)
ExpState *esPtr;
{
    Tcl_CreateChannelHandler(esPtr->channel,
	    TCL_READABLE|TCL_EXCEPTION,
	    exp_background_channelhandler,
	    (ClientData)esPtr);

    esPtr->bg_status = armed;
}

void
exp_arm_background_channelhandler(esPtr)
ExpState *esPtr;
{
    switch (esPtr->bg_status) {
	case unarmed:
	    exp_arm_background_channelhandler_force(esPtr);
	    break;
	case disarm_req_while_blocked:
	    esPtr->bg_status = blocked;	/* forget request */
................................................................................
	case blocked:
	    /* do nothing */
	    break;
    }
}

void
exp_disarm_background_channelhandler(esPtr)
ExpState *esPtr;
{
    switch (esPtr->bg_status) {
	case blocked:
	    esPtr->bg_status = disarm_req_while_blocked;
	    break;
	case armed:
	    esPtr->bg_status = unarmed;
................................................................................
    }
}

/* ignore block status and forcibly disarm handler - called from exp_close. */
/* After exp_close returns, we will not have an opportunity to disarm */
/* because the fd will be invalid, so we force it here. */
void
exp_disarm_background_channelhandler_force(esPtr)
ExpState *esPtr;
{
    switch (esPtr->bg_status) {
	case blocked:
	case disarm_req_while_blocked:
	case armed:
	    esPtr->bg_status = unarmed;
	    exp_event_disarm_bg(esPtr);
................................................................................
	    break;
    }
}

/* this can only be called at the end of the bg handler in which */
/* case we know the status is some kind of "blocked" */
void
exp_unblock_background_channelhandler(esPtr)
    ExpState *esPtr;
{
    switch (esPtr->bg_status) {
	case blocked:
	    exp_arm_background_channelhandler_force(esPtr);
	    break;
	case disarm_req_while_blocked:
	    exp_disarm_background_channelhandler_force(esPtr);
................................................................................
	    break;
    }
}

/* this can only be called at the beginning of the bg handler in which */
/* case we know the status must be "armed" */
void
exp_block_background_channelhandler(esPtr)
ExpState *esPtr;
{
    esPtr->bg_status = blocked;
    exp_event_disarm_bg(esPtr);
}


/*ARGSUSED*/
static void
exp_timehandler(clientData)
ClientData clientData;
{
    *(int *)clientData = TRUE;	
}

static void exp_channelhandler(clientData,mask)
ClientData clientData;
int mask;
{
    ExpState *esPtr = (ExpState *)clientData;

    esPtr->notified = TRUE;
    esPtr->notifiedMask = mask;

    exp_event_disarm_fg(esPtr);
}

void
exp_event_disarm_fg(esPtr)
ExpState *esPtr;
{
    /*printf("DeleteChannelHandler: %s\r\n",esPtr->name);*/
    Tcl_DeleteChannelHandler(esPtr->channel,exp_channelhandler,(ClientData)esPtr);

    /* remember that ChannelHandler has been disabled so that */
    /* it can be turned on for fg expect's as well as bg */
    esPtr->fg_armed = FALSE;
}

/* returns status, one of EOF, TIMEOUT, ERROR or DATA */
/* can now return RECONFIGURE, too */
/*ARGSUSED*/
int exp_get_next_event(interp,esPtrs,n,esPtrOut,timeout,key)
Tcl_Interp *interp;
ExpState *(esPtrs[]);
int n;			/* # of esPtrs */
ExpState **esPtrOut;	/* 1st ready esPtr, not set if none */
int timeout;		/* seconds */
int key;
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    ExpState *esPtr;
    int i;	/* index into in-array */
#ifdef HAVE_PTYTRAP
    struct request_info ioctl_info;
................................................................................
    }
}

/* Having been told there was an event for a specific ExpState, get it */
/* This returns status, one of EOF, TIMEOUT, ERROR or DATA */
/*ARGSUSED*/
int
exp_get_next_event_info(interp,esPtr)
Tcl_Interp *interp;
ExpState *esPtr;
{
#ifdef HAVE_PTYTRAP
    struct request_info ioctl_info;
#endif

    if (esPtr->notifiedMask & TCL_READABLE) return EXP_DATA_NEW;

................................................................................
    /* it will be thrown away by caller anyway */
    return EXP_TCLERROR;
#endif
}

/*ARGSUSED*/
int	/* returns TCL_XXX */
exp_dsleep(interp,sec)
Tcl_Interp *interp;
double sec;
{
    int timerFired = FALSE;

    Tcl_CreateTimerHandler((int)(sec*1000),exp_timehandler,(ClientData)&timerFired);

    while (!timerFired) {
	Tcl_DoOneEvent(0);
................................................................................
    }
    return TCL_OK;
}

static char destroy_cmd[] = "destroy .";

static void
exp_event_exit_real(interp)
Tcl_Interp *interp;
{
    Tcl_Eval(interp,destroy_cmd);
}

/* set things up for later calls to event handler */
void
exp_init_event()
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
    tsdPtr->rr = 0;

    exp_event_exit = exp_event_exit_real;
}

typedef struct ThreadSpecificData {
    int rr;		/* round robin ptr */
} ThreadSpecificData;

static Tcl_ThreadDataKey dataKey;

void
exp_event_disarm_bg(ExpState *esPtr)

{
    Tcl_DeleteChannelHandler(esPtr->channel,exp_background_channelhandler,(ClientData)esPtr);
}

static void
exp_arm_background_channelhandler_force(ExpState *esPtr)

{
    Tcl_CreateChannelHandler(esPtr->channel,
	    TCL_READABLE|TCL_EXCEPTION,
	    exp_background_channelhandler,
	    (ClientData)esPtr);

    esPtr->bg_status = armed;
}

void
exp_arm_background_channelhandler( ExpState *esPtr)

{
    switch (esPtr->bg_status) {
	case unarmed:
	    exp_arm_background_channelhandler_force(esPtr);
	    break;
	case disarm_req_while_blocked:
	    esPtr->bg_status = blocked;	/* forget request */
................................................................................
	case blocked:
	    /* do nothing */
	    break;
    }
}

void
exp_disarm_background_channelhandler( ExpState *esPtr)

{
    switch (esPtr->bg_status) {
	case blocked:
	    esPtr->bg_status = disarm_req_while_blocked;
	    break;
	case armed:
	    esPtr->bg_status = unarmed;
................................................................................
    }
}

/* ignore block status and forcibly disarm handler - called from exp_close. */
/* After exp_close returns, we will not have an opportunity to disarm */
/* because the fd will be invalid, so we force it here. */
void
exp_disarm_background_channelhandler_force( ExpState *esPtr)

{
    switch (esPtr->bg_status) {
	case blocked:
	case disarm_req_while_blocked:
	case armed:
	    esPtr->bg_status = unarmed;
	    exp_event_disarm_bg(esPtr);
................................................................................
	    break;
    }
}

/* this can only be called at the end of the bg handler in which */
/* case we know the status is some kind of "blocked" */
void
exp_unblock_background_channelhandler( ExpState *esPtr)

{
    switch (esPtr->bg_status) {
	case blocked:
	    exp_arm_background_channelhandler_force(esPtr);
	    break;
	case disarm_req_while_blocked:
	    exp_disarm_background_channelhandler_force(esPtr);
................................................................................
	    break;
    }
}

/* this can only be called at the beginning of the bg handler in which */
/* case we know the status must be "armed" */
void
exp_block_background_channelhandler( ExpState *esPtr)

{
    esPtr->bg_status = blocked;
    exp_event_disarm_bg(esPtr);
}


/*ARGSUSED*/
static void

exp_timehandler( ClientData clientData)
{
    *(int *)clientData = TRUE;	
}

static void exp_channelhandler( ClientData clientData, int mask)


{
    ExpState *esPtr = (ExpState *)clientData;

    esPtr->notified = TRUE;
    esPtr->notifiedMask = mask;

    exp_event_disarm_fg(esPtr);
}

void
exp_event_disarm_fg( ExpState *esPtr)

{
    /*printf("DeleteChannelHandler: %s\r\n",esPtr->name);*/
    Tcl_DeleteChannelHandler(esPtr->channel,exp_channelhandler,(ClientData)esPtr);

    /* remember that ChannelHandler has been disabled so that */
    /* it can be turned on for fg expect's as well as bg */
    esPtr->fg_armed = FALSE;
}

/* returns status, one of EOF, TIMEOUT, ERROR or DATA */
/* can now return RECONFIGURE, too */
/*ARGSUSED*/
int exp_get_next_event(
    Tcl_Interp *interp,
    ExpState *(esPtrs[]),
    int n,			/* # of esPtrs */
    ExpState **esPtrOut,	/* 1st ready esPtr, not set if none */
    int timeout,		/* seconds */
    int key)
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    ExpState *esPtr;
    int i;	/* index into in-array */
#ifdef HAVE_PTYTRAP
    struct request_info ioctl_info;
................................................................................
    }
}

/* Having been told there was an event for a specific ExpState, get it */
/* This returns status, one of EOF, TIMEOUT, ERROR or DATA */
/*ARGSUSED*/
int
exp_get_next_event_info( Tcl_Interp *interp, ExpState *esPtr)


{
#ifdef HAVE_PTYTRAP
    struct request_info ioctl_info;
#endif

    if (esPtr->notifiedMask & TCL_READABLE) return EXP_DATA_NEW;

................................................................................
    /* it will be thrown away by caller anyway */
    return EXP_TCLERROR;
#endif
}

/*ARGSUSED*/
int	/* returns TCL_XXX */

exp_dsleep( Tcl_Interp *interp, double sec)

{
    int timerFired = FALSE;

    Tcl_CreateTimerHandler((int)(sec*1000),exp_timehandler,(ClientData)&timerFired);

    while (!timerFired) {
	Tcl_DoOneEvent(0);
................................................................................
    }
    return TCL_OK;
}

static char destroy_cmd[] = "destroy .";

static void

exp_event_exit_real( Tcl_Interp *interp)
{
    Tcl_Eval(interp,destroy_cmd);
}

/* set things up for later calls to event handler */
void
exp_init_event(void)
{
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
    tsdPtr->rr = 0;

    exp_event_exit = exp_event_exit_real;
}