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sulogin: minor cleanup.

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This commit is contained in:
Denis Vlasenko 2006-09-09 14:00:58 +00:00
parent 8fafacd7ec
commit 9852d5a1e6
1 changed files with 15 additions and 17 deletions
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32
loginutils/sulogin.c
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@ -9,10 +9,6 @@
#include "busybox.h"
#define SULOGIN_PROMPT "Give root password for system maintenance\n" \
"(or type Control-D for normal startup):"
static const char * const forbid[] = {
"ENV",
"BASH_ENV",
@ -32,7 +28,6 @@ static const char * const forbid[] = {
};
static void catchalarm(int ATTRIBUTE_UNUSED junk)
{
exit(EXIT_FAILURE);
@ -48,10 +43,8 @@ int sulogin_main(int argc, char **argv)
struct passwd *pwd;
struct spwd *spwd;
if (ENABLE_FEATURE_SYSLOG) {
logmode = LOGMODE_BOTH;
openlog(bb_applet_name, LOG_CONS | LOG_NOWAIT, LOG_AUTH);
}
logmode = LOGMODE_BOTH;
openlog(bb_applet_name, 0, LOG_AUTH);
if (bb_getopt_ulflags (argc, argv, "t:", &timeout_arg)) {
if (safe_strtoi(timeout_arg, &timeout)) {
@ -68,7 +61,8 @@ int sulogin_main(int argc, char **argv)
}
if (!isatty(0) || !isatty(1) || !isatty(2)) {
bb_error_msg_and_die("Not a tty");
logmode = LOGMODE_SYSLOG;
bb_error_msg_and_die("not a tty");
}
/* Clear out anything dangerous from the environment */
@ -78,28 +72,31 @@ int sulogin_main(int argc, char **argv)
signal(SIGALRM, catchalarm);
if (!(pwd = getpwuid(0))) {
goto AUTH_ERROR;
goto auth_error;
}
if (ENABLE_FEATURE_SHADOWPASSWDS) {
if (!(spwd = getspnam(pwd->pw_name))) {
goto AUTH_ERROR;
goto auth_error;
}
pwd->pw_passwd = spwd->sp_pwdp;
}
while (1) {
/* cp points to a static buffer that is zeroed every time */
cp = bb_askpass(timeout, SULOGIN_PROMPT);
cp = bb_askpass(timeout,
"Give root password for system maintenance\n"
"(or type Control-D for normal startup):");
if (!cp || !*cp) {
bb_info_msg("Normal startup");
exit(EXIT_SUCCESS);
return 0;
}
if (strcmp(pw_encrypt(cp, pwd->pw_passwd), pwd->pw_passwd) == 0) {
break;
}
bb_do_delay(FAIL_DELAY);
bb_error_msg("Login incorrect");
bb_error_msg("login incorrect");
}
memset(cp, 0, strlen(cp));
signal(SIGALRM, SIG_DFL);
@ -110,6 +107,7 @@ int sulogin_main(int argc, char **argv)
run_shell(pwd->pw_shell, 1, 0, 0);
/* never returns */
AUTH_ERROR:
bb_error_msg_and_die("No password entry for `root'");
auth_error:
bb_error_msg_and_die("no password entry for `root'");
}