mirror of
https://github.com/sheumann/hush.git
synced 2024-08-15 02:29:00 +00:00
02859aaeb2
Custom linker script 'busybox_ldscript' found, using it function old new delta static.str 4 - -4 static.passwd 4 0 -4 bb_ask 322 311 -11 ether_print 63 47 -16 UNSPEC_print 82 66 -16 INET_sprint 59 38 -21 INET6_sprint 54 30 -24 make_human_readable_str 292 235 -57 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 0/7 up/down: 0/-153) Total: -153 bytes text data bss dec hex filename 939880 992 17480 958352 e9f90 busybox_old 939736 992 17456 958184 e9ee8 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Ask for a password
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
/* do nothing signal handler */
|
|
static void askpass_timeout(int UNUSED_PARAM ignore)
|
|
{
|
|
}
|
|
|
|
char* FAST_FUNC bb_ask_stdin(const char *prompt)
|
|
{
|
|
return bb_ask(STDIN_FILENO, 0, prompt);
|
|
}
|
|
char* FAST_FUNC bb_ask(const int fd, int timeout, const char *prompt)
|
|
{
|
|
/* Was static char[BIGNUM] */
|
|
enum { sizeof_passwd = 128 };
|
|
|
|
char *passwd;
|
|
char *ret;
|
|
int i;
|
|
struct sigaction sa, oldsa;
|
|
struct termios tio, oldtio;
|
|
|
|
tcflush(fd, TCIFLUSH);
|
|
/* Was buggy: was printing prompt *before* flushing input,
|
|
* which was upsetting "expect" based scripts of some users.
|
|
*/
|
|
fputs(prompt, stdout);
|
|
fflush_all();
|
|
|
|
tcgetattr(fd, &oldtio);
|
|
tio = oldtio;
|
|
#if 0
|
|
/* Switch off UPPERCASE->lowercase conversion (never used since 198x)
|
|
* and XON/XOFF (why we want to mess with this??)
|
|
*/
|
|
# ifndef IUCLC
|
|
# define IUCLC 0
|
|
# endif
|
|
tio.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
|
|
#endif
|
|
/* Switch off echo */
|
|
tio.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL);
|
|
tcsetattr(fd, TCSANOW, &tio);
|
|
|
|
memset(&sa, 0, sizeof(sa));
|
|
/* sa.sa_flags = 0; - no SA_RESTART! */
|
|
/* SIGINT and SIGALRM will interrupt reads below */
|
|
sa.sa_handler = askpass_timeout;
|
|
sigaction(SIGINT, &sa, &oldsa);
|
|
if (timeout) {
|
|
sigaction_set(SIGALRM, &sa);
|
|
alarm(timeout);
|
|
}
|
|
|
|
passwd = auto_string(xmalloc(sizeof_passwd));
|
|
ret = passwd;
|
|
i = 0;
|
|
while (1) {
|
|
int r = read(fd, &ret[i], 1);
|
|
if ((i == 0 && r == 0) /* EOF (^D) with no password */
|
|
|| r < 0
|
|
) {
|
|
/* read is interrupted by timeout or ^C */
|
|
ret = NULL;
|
|
break;
|
|
}
|
|
if (r == 0 /* EOF */
|
|
|| ret[i] == '\r' || ret[i] == '\n' /* EOL */
|
|
|| ++i == sizeof_passwd-1 /* line limit */
|
|
) {
|
|
ret[i] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (timeout) {
|
|
alarm(0);
|
|
}
|
|
sigaction_set(SIGINT, &oldsa);
|
|
tcsetattr(fd, TCSANOW, &oldtio);
|
|
bb_putchar('\n');
|
|
fflush_all();
|
|
return ret;
|
|
}
|