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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
** Ask for a password from tty
** This is an own file to avoid conflicts with curses
*/
#include "config.h"
#include "client/get_password.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/ioctl.h>
#ifdef HAVE_TERMIOS_H /* For tty-password */
# include <termios.h>
# define TERMIO struct termios
#else
# ifdef HAVE_TERMIO_H /* For tty-password */
# include <termio.h>
# define TERMIO struct termio
# else
# include <sgtty.h>
# define TERMIO struct sgttyb
# endif
#endif
/*
Can't use fgets, because readline will get confused
length is max number of chars in to, not counting \0
to will not include the eol characters.
*/
static void get_password(char *to, uint32_t length,int fd, bool echo)
{
char *pos=to,*end=to+length;
for (;;)
{
char tmp;
if (read(fd,&tmp,1) != 1)
break;
if (tmp == '\b' || (int) tmp == 127)
{
if (pos != to)
{
if (echo)
{
fputs("\b \b",stdout);
fflush(stdout);
}
pos--;
continue;
}
}
if (tmp == '\n' || tmp == '\r' || tmp == 3)
break;
if (iscntrl(tmp) || pos == end)
continue;
if (echo)
{
fputc('*',stdout);
fflush(stdout);
}
*(pos++) = tmp;
}
while (pos != to && isspace(pos[-1]) == ' ')
pos--; /* Allow dummy space at end */
*pos=0;
return;
}
char *client_get_tty_password(const char *opt_message)
{
TERMIO org,tmp;
char buff[80];
if (isatty(fileno(stdout)))
{
fputs(opt_message ? opt_message : "Enter password: ",stdout);
fflush(stdout);
}
# if defined(HAVE_TERMIOS_H)
tcgetattr(fileno(stdin), &org);
tmp = org;
tmp.c_lflag &= ~(ECHO | ISIG | ICANON);
tmp.c_cc[VMIN] = 1;
tmp.c_cc[VTIME] = 0;
tcsetattr(fileno(stdin), TCSADRAIN, &tmp);
get_password(buff, sizeof(buff)-1, fileno(stdin), isatty(fileno(stdout)));
tcsetattr(fileno(stdin), TCSADRAIN, &org);
# elif defined(HAVE_TERMIO_H)
ioctl(fileno(stdin), (int) TCGETA, &org);
tmp=org;
tmp.c_lflag &= ~(ECHO | ISIG | ICANON);
tmp.c_cc[VMIN] = 1;
tmp.c_cc[VTIME]= 0;
ioctl(fileno(stdin),(int) TCSETA, &tmp);
get_password(buff,sizeof(buff)-1,fileno(stdin),isatty(fileno(stdout)));
ioctl(fileno(stdin),(int) TCSETA, &org);
# else
gtty(fileno(stdin), &org);
tmp=org;
tmp.sg_flags &= ~ECHO;
tmp.sg_flags |= RAW;
stty(fileno(stdin), &tmp);
get_password(buff,sizeof(buff)-1,fileno(stdin),isatty(fileno(stdout)));
stty(fileno(stdin), &org);
# endif
if (isatty(fileno(stdout)))
fputc('\n',stdout);
return strdup(buff);
}
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