/* $OpenBSD: ap_getpass.c,v 1.8 2005/03/28 21:03:33 niallo Exp $ */

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 * The Apache Software License, Version 1.1
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 * reserved.
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 * This software consists of voluntary contributions made by many
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 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
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/*
 * ap_getpass.c: abstraction to provide for obtaining a password from the
 * command line in whatever way the OS supports.  In the best case, it's a
 * wrapper for the system library's getpass() routine; otherwise, we
 * use one we define ourselves.
 */

#include "ap_config.h"
#include <sys/types.h>
#include <errno.h>
#include "ap.h"

#define LF 10
#define CR 13

#define MAX_STRING_LEN 256

#define ERR_OVERFLOW 5

/*
 * Use the OS getpass() routine (or our own) to obtain a password from
 * the input stream.
 *
 * Exit values:
 *  0: Success
 *  5: Partial success; entered text truncated to the size of the
 *     destination buffer
 *
 * Restrictions: Truncation also occurs according to the host system's
 * getpass() semantics, or at position 255 if our own version is used,
 * but the caller is *not* made aware of it.
 */

API_EXPORT(int)
ap_getpass(const char *prompt, char *pwbuf, size_t bufsiz)
{
	char *pw_got;
	int result = 0;

	pw_got = getpass(prompt);
	if (strlen(pw_got) > (bufsiz - 1))
		result = ERR_OVERFLOW;
	ap_cpystrn(pwbuf, pw_got, bufsiz);
	return result;
}