Diff of /tags/mkinitrd-6_1_11/busybox/libbb/bb_askpass.c

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	revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 8	Line 8
8	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9	*/	*/
10
	#include <stdio.h>
	#include <string.h>
	#include <unistd.h>
	#include <fcntl.h>
	#include <signal.h>
11	#include <termios.h>	#include <termios.h>
	#include <sys/ioctl.h>
12
13	#include "libbb.h"	#include "libbb.h"
14
15	/* do nothing signal handler */	/* do nothing signal handler */
16	static void askpass_timeout(int ATTRIBUTE_UNUSED ignore)	static void askpass_timeout(int UNUSED_PARAM ignore)
17	{	{
18	}	}
19
20	char *bb_askpass(int timeout, const char * prompt)	char* FAST_FUNC bb_askpass(int timeout, const char *prompt)
21	{	{
22	static char passwd[64];	/* Was static char[BIGNUM] */
23		enum { sizeof_passwd = 128 };
24		static char *passwd;
25
26	char *ret;	char *ret;
27	int i;	int i;
28	struct sigaction sa;	struct sigaction sa, oldsa;
29	struct termios old, new;	struct termios tio, oldtio;
30
31	tcgetattr(STDIN_FILENO, &old);	if (!passwd)
32	tcflush(STDIN_FILENO, TCIFLUSH);	passwd = xmalloc(sizeof_passwd);
33		memset(passwd, 0, sizeof_passwd);
	memset(passwd, 0, sizeof(passwd));
	fputs(prompt, stdout);
	fflush(stdout);
	tcgetattr(STDIN_FILENO, &new);
	new.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
	new.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
	tcsetattr(STDIN_FILENO, TCSANOW, &new);
34
35		tcgetattr(STDIN_FILENO, &oldtio);
36		tcflush(STDIN_FILENO, TCIFLUSH);
37		tio = oldtio;
38		tio.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
39		tio.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
40		tcsetattr_stdin_TCSANOW(&tio);
41
42		memset(&sa, 0, sizeof(sa));
43		/* sa.sa_flags = 0; - no SA_RESTART! */
44		/* SIGINT and SIGALRM will interrupt read below */
45		sa.sa_handler = askpass_timeout;
46		sigaction(SIGINT, &sa, &oldsa);
47	if (timeout) {	if (timeout) {
48	sa.sa_flags = 0;	sigaction_set(SIGALRM, &sa);
	sa.sa_handler = askpass_timeout;
	sigaction(SIGALRM, &sa, NULL);
49	alarm(timeout);	alarm(timeout);
50	}	}
51
52		fputs(prompt, stdout);
53		fflush(stdout);
54	ret = NULL;	ret = NULL;
55	if (read(STDIN_FILENO, passwd, sizeof(passwd)-1) > 0) {	/* On timeout or Ctrl-C, read will hopefully be interrupted,
56		* and we return NULL */
57		if (read(STDIN_FILENO, passwd, sizeof_passwd - 1) > 0) {
58	ret = passwd;	ret = passwd;
59	i = 0;	i = 0;
60	/* Last byte is guaranteed to be 0	/* Last byte is guaranteed to be 0
#	Line 67  char *bb_askpass(int timeout, const char	Line 68  char *bb_askpass(int timeout, const char
68	if (timeout) {	if (timeout) {
69	alarm(0);	alarm(0);
70	}	}
71		sigaction_set(SIGINT, &oldsa);
72
73	tcsetattr(STDIN_FILENO, TCSANOW, &old);	tcsetattr_stdin_TCSANOW(&oldtio);
74	puts("");	bb_putchar('\n');
75	fflush(stdout);	fflush(stdout);
76	return ret;	return ret;
77	}	}

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Legend: Removed from v.532   changed lines   Added in v.816