1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LSTDIO/GETS.C	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,117 @@
     1.4 +/* GETS.C
     1.5 + * 
     1.6 + * Portions Copyright (c) 1990-2005 Nokia Corporation and/or its subsidiary(-ies).
     1.7 + * All rights reserved.
     1.8 + */
     1.9 +
    1.10 +/*
    1.11 + * Copyright (c) 1990 The Regents of the University of California.
    1.12 + * All rights reserved.
    1.13 + *
    1.14 + * Redistribution and use in source and binary forms are permitted
    1.15 + * provided that the above copyright notice and this paragraph are
    1.16 + * duplicated in all such forms and that any documentation,
    1.17 + * advertising materials, and other materials related to such
    1.18 + * distribution and use acknowledge that the software was developed
    1.19 + * by the University of California, Berkeley.  The name of the
    1.20 + * University may not be used to endorse or promote products derived
    1.21 + * from this software without specific prior written permission.
    1.22 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    1.23 + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    1.24 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    1.25 + */
    1.26 +
    1.27 +
    1.28 +/*
    1.29 +
    1.30 +FUNCTION
    1.31 +        <<gets>>---get character string (obsolete, use <<fgets>> instead)
    1.32 +INDEX
    1.33 +	gets
    1.34 +INDEX
    1.35 +	_gets_r
    1.36 +
    1.37 +ANSI_SYNOPSIS
    1.38 +        #include <stdio.h>
    1.39 +
    1.40 +	char *gets(char *<[buf]>);
    1.41 +
    1.42 +	char *_gets_r(void *<[reent]>, char *<[buf]>);
    1.43 +
    1.44 +TRAD_SYNOPSIS
    1.45 +	#include <stdio.h>
    1.46 +
    1.47 +	char *gets(<[buf]>)
    1.48 +	char *<[buf]>;
    1.49 +
    1.50 +	char *_gets_r(<[reent]>, <[buf]>)
    1.51 +	char *<[reent]>;
    1.52 +	char *<[buf]>;
    1.53 +
    1.54 +DESCRIPTION
    1.55 +	Reads characters from standard input until a newline is found.
    1.56 +	The characters up to the newline are stored in <[buf]>. The
    1.57 +	newline is discarded, and the buffer is terminated with a 0.
    1.58 +
    1.59 +	This is a @emph{dangerous} function, as it has no way of checking
    1.60 +	the amount of space available in <[buf]>. One of the attacks
    1.61 +	used by the Internet Worm of 1988 used this to overrun a
    1.62 +	buffer allocated on the stack of the finger daemon and
    1.63 +	overwrite the return address, causing the daemon to execute
    1.64 +	code downloaded into it over the connection.
    1.65 +
    1.66 +	The alternate function <<_gets_r>> is a reentrant version.  The extra
    1.67 +	argument <[reent]> is a pointer to a reentrancy structure.
    1.68 +
    1.69 +
    1.70 +RETURNS
    1.71 +	<<gets>> returns the buffer passed to it, with the data filled
    1.72 +	in. If end of file occurs with some data already accumulated,
    1.73 +	the data is returned with no other indication. If end of file
    1.74 +	occurs with no data in the buffer, NULL is returned.
    1.75 +
    1.76 +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
    1.77 +<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
    1.78 +*/
    1.79 +
    1.80 +#include <stdio_r.h>
    1.81 +#include "LOCAL.H"
    1.82 +
    1.83 +/**
    1.84 +A reentrant version of gets().
    1.85 +*/
    1.86 +EXPORT_C char *
    1.87 +_gets_r (struct _reent *ptr, char *buf)
    1.88 +{
    1.89 +  register int c;
    1.90 +  register char *s = buf;
    1.91 +
    1.92 +  while ((c = _getchar_r (ptr)) != '\n')
    1.93 +    if (c == EOF)
    1.94 +      if (s == buf)
    1.95 +	return NULL;
    1.96 +      else
    1.97 +	break;
    1.98 +    else
    1.99 +      *s++ = (char)c;
   1.100 +  *s = 0;
   1.101 +  return buf;
   1.102 +}
   1.103 +
   1.104 +#ifndef _REENT_ONLY
   1.105 +
   1.106 +/**
   1.107 +Get a string from stdin.
   1.108 +Reads characters from stdin and stores them into buffer
   1.109 +until a newline (\n) or EOF character is encountered.
   1.110 +@return On success, the buffer parameter is returned.
   1.111 +On end-of-file or error, a null pointer is returned. 
   1.112 +@param pointer to a buffer where to receive the resulting string.
   1.113 +*/
   1.114 +EXPORT_C char *
   1.115 +gets (char *buf)
   1.116 +{
   1.117 +  return _gets_r (_REENT, buf);
   1.118 +}
   1.119 +
   1.120 +#endif