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Port over the last of the tinylogin applets

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-Erik
This commit is contained in:
Eric Andersen 2002-06-23 04:24:25 +00:00
parent 0fbff134f4
commit 27f64e1f4e
26 changed files with 1722 additions and 258 deletions
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9
include/applets.h
View File

@ -335,6 +335,9 @@
#ifdef CONFIG_OD #ifdef CONFIG_OD
APPLET(od, od_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) APPLET(od, od_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
#endif #endif
#ifdef CONFIG_PASSWD
APPLET(passwd, passwd_main, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS)
#endif
#ifdef CONFIG_PIDOF #ifdef CONFIG_PIDOF
APPLET(pidof, pidof_main, _BB_DIR_BIN, _BB_SUID_NEVER) APPLET(pidof, pidof_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif #endif
@ -419,6 +422,9 @@
#ifdef CONFIG_SU #ifdef CONFIG_SU
APPLET(su, su_main, _BB_DIR_BIN, _BB_SUID_ALWAYS) APPLET(su, su_main, _BB_DIR_BIN, _BB_SUID_ALWAYS)
#endif #endif
#ifdef CONFIG_SULOGIN
APPLET(sulogin, sulogin_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
#endif
#ifdef CONFIG_SWAPONOFF #ifdef CONFIG_SWAPONOFF
APPLET(swapoff, swap_on_off_main, _BB_DIR_SBIN, _BB_SUID_NEVER) APPLET(swapoff, swap_on_off_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
#endif #endif
@ -505,6 +511,9 @@
#ifdef CONFIG_VI #ifdef CONFIG_VI
APPLET(vi, vi_main, _BB_DIR_BIN, _BB_SUID_NEVER) APPLET(vi, vi_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif #endif
#ifdef CONFIG_VLOCK
APPLET(vlock, vlock_main, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS)
#endif
#ifdef CONFIG_WATCHDOG #ifdef CONFIG_WATCHDOG
APPLET(watchdog, watchdog_main, _BB_DIR_SBIN, _BB_SUID_NEVER) APPLET(watchdog, watchdog_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
#endif #endif

30
include/libbb.h
View File

@ -39,6 +39,16 @@
#include "config.h" #include "config.h"
#include "pwd.h"
#include "grp.h"
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
#include "shadow_.h"
#endif
#ifdef CONFIG_FEATURE_SHA1_PASSWORDS
# include "sha1.h"
#endif
#if (__GNU_LIBRARY__ < 5) && (!defined __dietlibc__) #if (__GNU_LIBRARY__ < 5) && (!defined __dietlibc__)
/* libc5 doesn't define socklen_t */ /* libc5 doesn't define socklen_t */
typedef unsigned int socklen_t; typedef unsigned int socklen_t;
@ -260,6 +270,15 @@ extern const char * const too_few_args;
extern const char * const name_longer_than_foo; extern const char * const name_longer_than_foo;
extern const char * const unknown; extern const char * const unknown;
extern const char * const can_not_create_raw_socket; extern const char * const can_not_create_raw_socket;
extern const char * const nologin_file;
extern const char * const passwd_file;
extern const char * const shadow_file;
extern const char * const gshadow_file;
extern const char * const group_file;
extern const char * const securetty_file;
extern const char * const motd_file;
extern const char * const issue_file;
extern const char * const _path_login;
#ifdef CONFIG_FEATURE_DEVFS #ifdef CONFIG_FEATURE_DEVFS
# define CURRENT_VC "/dev/vc/0" # define CURRENT_VC "/dev/vc/0"
@ -299,4 +318,15 @@ void reset_ino_dev_hashtable(void);
extern size_t xstrlen(const char *string); extern size_t xstrlen(const char *string);
#define strlen(x) xstrlen(x) #define strlen(x) xstrlen(x)
#define FAIL_DELAY 3
extern void change_identity ( const struct passwd *pw );
extern void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args );
extern int restricted_shell ( const char *shell );
extern void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw );
extern int correct_password ( const struct passwd *pw );
extern char *pw_encrypt(const char *clear, const char *salt);
extern struct spwd *pwd_to_spwd(const struct passwd *pw);
extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
#endif /* __LIBCONFIG_H__ */ #endif /* __LIBCONFIG_H__ */

82
include/shadow_.h Normal file
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@ -0,0 +1,82 @@
/*
* Copyright 1988 - 1994, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _H_SHADOW
#define _H_SHADOW
#ifdef USE_SYSTEM_SHADOW
#include <shadow.h>
#else
/*
* This information is not derived from AT&T licensed sources. Posted
* to the USENET 11/88, and updated 11/90 with information from SVR4.
*
* $Id: shadow_.h,v 1.1 2002/06/23 04:24:20 andersen Exp $
*/
typedef long sptime;
/*
* Shadow password security file structure.
*/
struct spwd {
char *sp_namp; /* login name */
char *sp_pwdp; /* encrypted password */
sptime sp_lstchg; /* date of last change */
sptime sp_min; /* minimum number of days between changes */
sptime sp_max; /* maximum number of days between changes */
sptime sp_warn; /* number of days of warning before password
expires */
sptime sp_inact; /* number of days after password expires
until the account becomes unusable. */
sptime sp_expire; /* days since 1/1/70 until account expires */
unsigned long sp_flag; /* reserved for future use */
};
/*
* Shadow password security file functions.
*/
#include <stdio.h> /* for FILE */
extern struct spwd *getspent(void);
extern struct spwd *sgetspent(const char *);
extern struct spwd *fgetspent(FILE *);
extern void setspent(void);
extern void endspent(void);
extern int putspent(const struct spwd *, FILE *);
extern struct spwd *getspnam(const char *name);
extern struct spwd *pwd_to_spwd(const struct passwd *pw);
#endif /* USE_LOCAL_SHADOW */
#endif /* _H_SHADOW */

34
include/usage.h
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@ -1321,6 +1321,24 @@
"Write an unambiguous representation, octal bytes by default, of FILE\n"\ "Write an unambiguous representation, octal bytes by default, of FILE\n"\
"to standard output. With no FILE, or when FILE is -, read standard input." "to standard output. With no FILE, or when FILE is -, read standard input."
#ifdef CONFIG_FEATURE_SHA1_PASSWORDS
#define PASSWORD_ALG_TYPES(a) a
#else
#define PASSWORD_ALG_TYPES(a)
#endif
#define passwd_trivial_usage \
"[OPTION] [name]"
#define passwd_full_usage \
"CChange a user password. If no name is specified,\n" \
"changes the password for the current user.\n" \
"Options:\n" \
"\t-a\tDefine which algorithm shall be used for the password.\n" \
"\t\t\t(Choices: des, md5" \
CONFIG_FEATURE_SHA1_PASSWORDS(", sha1") \
")\n\t-d\tDelete the password for the specified user account.\n" \
"\t-l\tLocks (disables) the specified user account.\n" \
"\t-u\tUnlocks (re-enables) the specified user account.";
#define pidof_trivial_usage \ #define pidof_trivial_usage \
"process-name [process-name ...]" "process-name [process-name ...]"
#define pidof_full_usage \ #define pidof_full_usage \
@ -1586,6 +1604,15 @@
"Options:\n" \ "Options:\n" \
"\t-p\tPreserve environment" "\t-p\tPreserve environment"
#define sulogin_trivial_usage \
"[OPTION]... [tty-device]"
#define sulogin_full_usage \
"Single user login\n" \
"Options:\n" \
"\t-f\tDo not authenticate (user already authenticated)\n" \
"\t-h\tName of the remote host for this login.\n" \
"\t-p\tPreserve environment."
#define swapoff_trivial_usage \ #define swapoff_trivial_usage \
"[OPTION] [DEVICE]" "[OPTION] [DEVICE]"
#define swapoff_full_usage \ #define swapoff_full_usage \
@ -1956,6 +1983,13 @@
"Options:\n" \ "Options:\n" \
"\t-R\tRead-only- do not write to the file." "\t-R\tRead-only- do not write to the file."
#define vlock_trivial_usage \
"[OPTIONS]"
#define vlock_full_usage \
"Lock a virtual terminal. A password is required to unlock\n" \
"Options:\n" \
"\t-a\tLock all VTs"
#define watchdog_trivial_usage \ #define watchdog_trivial_usage \
"DEV" "DEV"
#define watchdog_full_usage \ #define watchdog_full_usage \

10
libbb/Makefile.in
View File

@ -34,17 +34,21 @@ LIBBB_SRC:= \
my_getpwuid.c parse_mode.c parse_number.c perror_msg.c perror_msg_and_die.c \ my_getpwuid.c parse_mode.c parse_number.c perror_msg.c perror_msg_and_die.c \
print_file.c process_escape_sequence.c read_package_field.c recursive_action.c \ print_file.c process_escape_sequence.c read_package_field.c recursive_action.c \
safe_read.c safe_strncpy.c syscalls.c syslog_msg_with_name.c time_string.c \ safe_read.c safe_strncpy.c syscalls.c syslog_msg_with_name.c time_string.c \
trim.c unzip.c uncompress.c vdprintf.c verror_msg.c vperror_msg.c wfopen.c xfuncs.c \ trim.c unzip.c uncompress.c vdprintf.c verror_msg.c vperror_msg.c wfopen.c \
xgetcwd.c xreadlink.c xregcomp.c interface.c remove_file.c last_char_is.c \ xgetcwd.c xreadlink.c xregcomp.c interface.c remove_file.c last_char_is.c \
copyfd.c vherror_msg.c herror_msg.c herror_msg_and_die.c xgethostbyname.c \ copyfd.c vherror_msg.c herror_msg.c herror_msg_and_die.c xgethostbyname.c \
dirname.c make_directory.c create_icmp_socket.c u_signal_names.c arith.c \ dirname.c make_directory.c create_icmp_socket.c u_signal_names.c arith.c \
simplify_path.c inet_common.c inode_hash.c simplify_path.c inet_common.c inode_hash.c obscure.c pwd2spwd.c xfuncs.c \
correct_password.c change_identity.c setup_environment.c run_shell.c \
pw_encrypt.c restricted_shell.c
LIBBB_OBJS=$(patsubst %.c,$(LIBBB_DIR)%.o, $(LIBBB_SRC)) LIBBB_OBJS=$(patsubst %.c,$(LIBBB_DIR)%.o, $(LIBBB_SRC))
LIBBB_MSRC:=$(LIBBB_DIR)messages.c LIBBB_MSRC:=$(LIBBB_DIR)messages.c
LIBBB_MOBJ:=full_version.o name_too_long.o omitting_directory.o not_a_directory.o \ LIBBB_MOBJ:=full_version.o name_too_long.o omitting_directory.o not_a_directory.o \
memory_exhausted.o invalid_date.o invalid_option.o io_error.o dash_dash_help.o \ memory_exhausted.o invalid_date.o invalid_option.o io_error.o dash_dash_help.o \
write_error.o too_few_args.o name_longer_than_foo.o unknown.o can_not_create_raw_socket.o write_error.o too_few_args.o name_longer_than_foo.o unknown.o can_not_create_raw_socket.o \
shadow_file.o passwd_file.o group_file.o gshadow_file.o nologin_file.o securetty_file.o \
motd_file.o
LIBBB_MOBJS=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ)) LIBBB_MOBJS=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ))
libraries-y+=$(LIBBB_DIR)$(LIBBB_AR) libraries-y+=$(LIBBB_DIR)$(LIBBB_AR)

54
libbb/change_identity.c Normal file
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@ -0,0 +1,54 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
#include <ctype.h>
#include "libbb.h"
/* Become the user and group(s) specified by PW. */
void change_identity ( const struct passwd *pw )
{
if ( initgroups ( pw-> pw_name, pw-> pw_gid ) == -1 )
perror_msg_and_die ( "cannot set groups" );
endgrent ( );
if ( setgid ( pw-> pw_gid ))
perror_msg_and_die ( "cannot set group id" );
if ( setuid ( pw->pw_uid ))
perror_msg_and_die ( "cannot set user id" );
}

78
libbb/correct_password.c Normal file
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@ -0,0 +1,78 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
#include <ctype.h>
#include <crypt.h>
#include "libbb.h"
/* Ask the user for a password.
Return 1 if the user gives the correct password for entry PW,
0 if not. Return 1 without asking for a password if run by UID 0
or if PW has an empty password. */
int correct_password ( const struct passwd *pw )
{
char *unencrypted, *encrypted, *correct;
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
if (( strcmp ( pw-> pw_passwd, "x" ) == 0 ) || ( strcmp ( pw-> pw_passwd, "*" ) == 0 )) {
struct spwd *sp = getspnam ( pw-> pw_name );
if ( !sp )
error_msg_and_die ( "no valid shadow password" );
correct = sp-> sp_pwdp;
}
else
#endif
correct = pw-> pw_passwd;
if ( correct == 0 || correct[0] == '\0' )
return 1;
unencrypted = getpass ( "Password: " );
if ( !unencrypted )
{
fputs ( "getpass: cannot open /dev/tty\n", stderr );
return 0;
}
encrypted = crypt ( unencrypted, correct );
memset ( unencrypted, 0, xstrlen ( unencrypted ));
return ( strcmp ( encrypted, correct ) == 0 ) ? 1 : 0;
}

18
libbb/libc5.c
View File

@ -11,6 +11,24 @@
#if __GNU_LIBRARY__ < 5 #if __GNU_LIBRARY__ < 5
/*
* Some systems already have updwtmp(). Some don't... This is
* the updwtmp() implementation from uClibc, Copyright 2002 by
* Erik Andersen <andersee@debian.org>
*/
extern void updwtmp(const char *wtmp_file, const struct utmp *lutmp)
{
int fd;
fd = open(wtmp_file, O_APPEND | O_WRONLY, 0);
if (fd >= 0) {
if (lockf(fd, F_LOCK, 0)==0) {
write(fd, (const char *) lutmp, sizeof(struct utmp));
lockf(fd, F_ULOCK, 0);
close(fd);
}
}
}
/* Copyright (C) 1991 Free Software Foundation, Inc. /* Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.

36
libbb/messages.c
View File

@ -66,3 +66,39 @@
#ifdef L_can_not_create_raw_socket #ifdef L_can_not_create_raw_socket
const char * const can_not_create_raw_socket = "can`t create raw socket"; const char * const can_not_create_raw_socket = "can`t create raw socket";
#endif #endif
#ifdef L_passwd_file
#define PASSWD_FILE "/etc/passwd"
const char * const passwd_file = PASSWD_FILE;
#endif
#ifdef L_shadow_file
#define SHADOW_FILE "/etc/shadow"
const char * const shadow_file = SHADOW_FILE;
#endif
#ifdef L_group_file
#define GROUP_FILE "/etc/group"
const char * const group_file = GROUP_FILE;
#endif
#ifdef L_gshadow_file
#define GSHADOW_FILE "/etc/gshadow"
const char * const gshadow_file = GSHADOW_FILE;
#endif
#ifdef L_nologin_file
#define NOLOGIN_FILE "/etc/nologin"
const char * const nologin_file = NOLOGIN_FILE;
#endif
#ifdef L_securetty_file
#define SECURETTY_FILE "/etc/securetty"
const char * const securetty_file = SECURETTY_FILE;
#endif
#ifdef L_motd_file
#define MOTD_FILE "/etc/motd"
const char * const motd_file = MOTD_FILE;
#endif

246
libbb/obscure.c Normal file
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@ -0,0 +1,246 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1994, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This version of obscure.c contains modifications to support "cracklib"
* by Alec Muffet (alec.muffett@uk.sun.com). You must obtain the Cracklib
* library source code for this function to operate.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "libbb.h"
/*
* can't be a palindrome - like `R A D A R' or `M A D A M'
*/
static int palindrome(const char *old, const char *newval)
{
int i, j;
i = strlen(newval);
for (j = 0; j < i; j++)
if (newval[i - j - 1] != newval[j])
return 0;
return 1;
}
/*
* more than half of the characters are different ones.
*/
static int similiar(const char *old, const char *newval)
{
int i, j;
for (i = j = 0; newval[i] && old[i]; i++)
if (strchr(newval, old[i]))
j++;
if (i >= j * 2)
return 0;
return 1;
}
/*
* a nice mix of characters.
*/
static int simple(const char *old, const char *newval)
{
int digits = 0;
int uppers = 0;
int lowers = 0;
int others = 0;
int size;
int i;
for (i = 0; newval[i]; i++) {
if (isdigit(newval[i]))
digits++;
else if (isupper(newval[i]))
uppers++;
else if (islower(newval[i]))
lowers++;
else
others++;
}
/*
* The scam is this - a password of only one character type
* must be 8 letters long. Two types, 7, and so on.
*/
size = 9;
if (digits)
size--;
if (uppers)
size--;
if (lowers)
size--;
if (others)
size--;
if (size <= i)
return 0;
return 1;
}
static char *str_lower(char *string)
{
char *cp;
for (cp = string; *cp; cp++)
*cp = tolower(*cp);
return string;
}
static char *password_check(const char *old, const char *newval, const struct passwd *pwdp)
{
char *msg = NULL;
char *oldmono, *newmono, *wrapped;
if (strcmp(newval, old) == 0)
return "no change";
newmono = str_lower(xstrdup(newval));
oldmono = str_lower(xstrdup(old));
wrapped = (char *) xmalloc(strlen(oldmono) * 2 + 1);
strcpy(wrapped, oldmono);
strcat(wrapped, oldmono);
if (palindrome(oldmono, newmono))
msg = "a palindrome";
if (!msg && strcmp(oldmono, newmono) == 0)
msg = "case changes only";
if (!msg && similiar(oldmono, newmono))
msg = "too similiar";
if (!msg && simple(old, newval))
msg = "too simple";
if (!msg && strstr(wrapped, newmono))
msg = "rotated";
bzero(newmono, strlen(newmono));
bzero(oldmono, strlen(oldmono));
bzero(wrapped, strlen(wrapped));
free(newmono);
free(oldmono);
free(wrapped);
return msg;
}
static char *obscure_msg(const char *old, const char *newval, const struct passwd *pwdp)
{
int maxlen, oldlen, newlen;
char *new1, *old1, *msg;
oldlen = strlen(old);
newlen = strlen(newval);
#if 0 /* why not check the password when set for the first time? --marekm */
if (old[0] == '\0')
/* return (1); */
return NULL;
#endif
if (newlen < 5)
return "too short";
/*
* Remaining checks are optional.
*/
/* Not for us -- Sean
*if (!getdef_bool("OBSCURE_CHECKS_ENAB"))
* return NULL;
*/
msg = password_check(old, newval, pwdp);
if (msg)
return msg;
/* The traditional crypt() truncates passwords to 8 chars. It is
possible to circumvent the above checks by choosing an easy
8-char password and adding some random characters to it...
Example: "password$%^&*123". So check it again, this time
truncated to the maximum length. Idea from npasswd. --marekm */
maxlen = 8;
if (oldlen <= maxlen && newlen <= maxlen)
return NULL;
new1 = (char *) xstrdup(newval);
old1 = (char *) xstrdup(old);
if (newlen > maxlen)
new1[maxlen] = '\0';
if (oldlen > maxlen)
old1[maxlen] = '\0';
msg = password_check(old1, new1, pwdp);
bzero(new1, newlen);
bzero(old1, oldlen);
free(new1);
free(old1);
return msg;
}
/*
* Obscure - see if password is obscure enough.
*
* The programmer is encouraged to add as much complexity to this
* routine as desired. Included are some of my favorite ways to
* check passwords.
*/
extern int obscure(const char *old, const char *newval, const struct passwd *pwdp)
{
char *msg = obscure_msg(old, newval, pwdp);
/* if (msg) { */
if (msg != NULL) {
printf("Bad password: %s.\n", msg);
/* return 0; */
return 1;
}
/* return 1; */
return 0;
}

48
libbb/pw_encrypt.c Normal file
View File

@ -0,0 +1,48 @@
/* vi: set sw=4 ts=4: */
/*
* Utility routine.
*
* Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <string.h>
#include <crypt.h>
#include "libbb.h"
extern char *pw_encrypt(const char *clear, const char *salt)
{
static char cipher[128];
char *cp;
#ifdef CONFIG_FEATURE_SHA1_PASSWORDS
if (strncmp(salt, "$2$", 3) == 0) {
return sha1_crypt(clear);
}
#endif
cp = (char *) crypt(clear, salt);
/* if crypt (a nonstandard crypt) returns a string too large,
truncate it so we don't overrun buffers and hope there is
enough security in what's left */
if (strlen(cp) > sizeof(cipher)-1) {
cp[sizeof(cipher)-1] = 0;
}
strcpy(cipher, cp);
return cipher;
}

73
libbb/pwd2spwd.c Normal file
View File

@ -0,0 +1,73 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1994, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <time.h>
#include <sys/types.h>
#include "libbb.h"
/*
* pwd_to_spwd - create entries for new spwd structure
*
* pwd_to_spwd() creates a new (struct spwd) containing the
* information in the pointed-to (struct passwd).
*/
#define DAY (24L*3600L)
#define WEEK (7*DAY)
#define SCALE DAY
struct spwd *pwd_to_spwd(const struct passwd *pw)
{
static struct spwd sp;
/*
* Nice, easy parts first. The name and passwd map directly
* from the old password structure to the new one.
*/
sp.sp_namp = pw->pw_name;
sp.sp_pwdp = pw->pw_passwd;
/*
* Defaults used if there is no pw_age information.
*/
sp.sp_min = 0;
sp.sp_max = (10000L * DAY) / SCALE;
sp.sp_lstchg = time((time_t *) 0) / SCALE;
/*
* These fields have no corresponding information in the password
* file. They are set to uninitialized values.
*/
sp.sp_warn = -1;
sp.sp_expire = -1;
sp.sp_inact = -1;
sp.sp_flag = -1;
return &sp;
}

57
libbb/restricted_shell.c Normal file
View File

@ -0,0 +1,57 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
#include <ctype.h>
#include "libbb.h"
/* Return 1 if SHELL is a restricted shell (one not returned by
getusershell), else 0, meaning it is a standard shell. */
int restricted_shell ( const char *shell )
{
char *line;
setusershell ( );
while (( line = getusershell ( ))) {
if (( *line != '#' ) && ( strcmp ( line, shell ) == 0 ))
break;
}
endusershell ( );
return line ? 0 : 1;
}

81
libbb/run_shell.c Normal file
View File

@ -0,0 +1,81 @@
/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
#include <ctype.h>
#include "libbb.h"
/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
If COMMAND is nonzero, pass it to the shell with the -c option.
If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
arguments. */
void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args )
{
const char **args;
int argno = 1;
int additional_args_cnt = 0;
for ( args = additional_args; args && *args; args++ )
additional_args_cnt++;
if ( additional_args )
args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
else
args = (const char **) xmalloc (sizeof (char *) * 4 );
args [0] = get_last_path_component ( xstrdup ( shell ));
if ( loginshell ) {
char *args0 = xmalloc ( xstrlen ( args [0] ) + 2 );
args0 [0] = '-';
strcpy ( args0 + 1, args [0] );
args [0] = args0;
}
if ( command ) {
args [argno++] = "-c";
args [argno++] = command;
}
if ( additional_args ) {
for ( ; *additional_args; ++additional_args )
args [argno++] = *additional_args;
}
args [argno] = 0;
execv ( shell, (char **) args );
perror_msg_and_die ( "cannot run %s", shell );
}

122
loginutils/tinylogin.c → libbb/setup_environment.c
View File

@ -28,8 +28,6 @@
* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
#include "busybox.h"
#include <stdio.h> #include <stdio.h>
#include <errno.h> #include <errno.h>
#include <unistd.h> #include <unistd.h>
@ -37,98 +35,19 @@
#include <stdlib.h> #include <stdlib.h>
#include <syslog.h> #include <syslog.h>
#include <ctype.h> #include <ctype.h>
#include "libbb.h"
#include "pwd.h"
#include "grp.h"
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
#include "shadow.h"
#endif
#define DEFAULT_LOGIN_PATH "/bin:/usr/bin" #define DEFAULT_LOGIN_PATH "/bin:/usr/bin"
#define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin" #define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin"
static void xsetenv ( const char *key, const char *value ) static void xsetenv ( const char *key, const char *value )
{ {
if ( setenv ( key, value, 1 )) if ( setenv ( key, value, 1 ))
error_msg_and_die ( "out of memory" ); error_msg_and_die ( "out of memory" );
} }
/* Become the user and group(s) specified by PW. */
void change_identity ( const struct passwd *pw )
{
if ( initgroups ( pw-> pw_name, pw-> pw_gid ) == -1 )
perror_msg_and_die ( "cannot set groups" );
endgrent ( );
if ( setgid ( pw-> pw_gid ))
perror_msg_and_die ( "cannot set group id" );
if ( setuid ( pw->pw_uid ))
perror_msg_and_die ( "cannot set user id" );
}
/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
If COMMAND is nonzero, pass it to the shell with the -c option.
If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
arguments. */
void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args )
{
const char **args;
int argno = 1;
int additional_args_cnt = 0;
for ( args = additional_args; args && *args; args++ )
additional_args_cnt++;
if ( additional_args )
args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
else
args = (const char **) xmalloc (sizeof (char *) * 4 );
args [0] = get_last_path_component ( xstrdup ( shell ));
if ( loginshell ) {
char *args0 = xmalloc ( xstrlen ( args [0] ) + 2 );
args0 [0] = '-';
strcpy ( args0 + 1, args [0] );
args [0] = args0;
}
if ( command ) {
args [argno++] = "-c";
args [argno++] = command;
}
if ( additional_args ) {
for ( ; *additional_args; ++additional_args )
args [argno++] = *additional_args;
}
args [argno] = 0;
execv ( shell, (char **) args );
perror_msg_and_die ( "cannot run %s", shell );
}
/* Return 1 if SHELL is a restricted shell (one not returned by
getusershell), else 0, meaning it is a standard shell. */
int restricted_shell ( const char *shell )
{
char *line;
setusershell ( );
while (( line = getusershell ( ))) {
if (( *line != '#' ) && ( strcmp ( line, shell ) == 0 ))
break;
}
endusershell ( );
return line ? 0 : 1;
}
/* Update `environ' for the new shell based on PW, with SHELL being
the value for the SHELL environment variable. */
void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw ) void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw )
{ {
if ( loginshell ) { if ( loginshell ) {
@ -172,38 +91,3 @@ void setup_environment ( const char *shell, int loginshell, int changeenv, const
} }
} }
/* Ask the user for a password.
Return 1 if the user gives the correct password for entry PW,
0 if not. Return 1 without asking for a password if run by UID 0
or if PW has an empty password. */
int correct_password ( const struct passwd *pw )
{
char *unencrypted, *encrypted, *correct;
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
if (( strcmp ( pw-> pw_passwd, "x" ) == 0 ) || ( strcmp ( pw-> pw_passwd, "*" ) == 0 )) {
struct spwd *sp = getspnam ( pw-> pw_name );
if ( !sp )
error_msg_and_die ( "no valid shadow password" );
correct = sp-> sp_pwdp;
}
else
#endif
correct = pw-> pw_passwd;
if ( correct == 0 || correct[0] == '\0' )
return 1;
unencrypted = getpass ( "Password: " );
if ( !unencrypted )
{
fputs ( "getpass: cannot open /dev/tty\n", stderr );
return 0;
}
encrypted = crypt ( unencrypted, correct );
memset ( unencrypted, 0, xstrlen ( unencrypted ));
return ( strcmp ( encrypted, correct ) == 0 ) ? 1 : 0;
}

9
loginutils/Makefile.in
View File

@ -26,9 +26,12 @@ LOGINUTILS-y:=
LOGINUTILS-$(CONFIG_ADDGROUP) += addgroup.o LOGINUTILS-$(CONFIG_ADDGROUP) += addgroup.o
LOGINUTILS-$(CONFIG_ADDUSER) += adduser.o LOGINUTILS-$(CONFIG_ADDUSER) += adduser.o
LOGINUTILS-$(CONFIG_DELUSER) += deluser.o LOGINUTILS-$(CONFIG_DELUSER) += deluser.o
LOGINUTILS-$(CONFIG_GETTY) += getty.o LOGINUTILS-$(CONFIG_GETTY) += getty.o
LOGINUTILS-$(CONFIG_LOGIN) += login.o tinylogin.o LOGINUTILS-$(CONFIG_LOGIN) += login.o
LOGINUTILS-$(CONFIG_SU) += su.o tinylogin.o LOGINUTILS-$(CONFIG_PASSWD) += passwd.o
LOGINUTILS-$(CONFIG_SU) += su.o
LOGINUTILS-$(CONFIG_SULOGIN) += sulogin.o
LOGINUTILS-$(CONFIG_VLOCK) += vlock.o
libraries-y+=$(LOGINUTILS_DIR)$(LOGINUTILS_AR) libraries-y+=$(LOGINUTILS_DIR)$(LOGINUTILS_AR)

9
loginutils/addgroup.c
View File

@ -35,9 +35,6 @@
#include "pwd.h" #include "pwd.h"
#include "grp.h" #include "grp.h"
#define GROUP_FILE "/etc/group"
#define SHADOW_FILE "/etc/gshadow"
/* structs __________________________ */ /* structs __________________________ */
@ -92,7 +89,7 @@ static int addgroup(const char *filename, char *group, gid_t gid)
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
FILE *etc_gshadow; FILE *etc_gshadow;
char *gshadow = SHADOW_FILE; char *gshadow = shadow_file;
#endif #endif
struct group gr; struct group gr;
@ -162,7 +159,7 @@ int addgroup_main(int argc, char **argv)
} }
/* werk */ /* werk */
return addgroup(GROUP_FILE, group, gid); return addgroup(group_file, group, gid);
} }
/* $Id: addgroup.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */ /* $Id: addgroup.c,v 1.2 2002/06/23 04:24:24 andersen Exp $ */

56
loginutils/adduser.c
View File

@ -33,11 +33,7 @@
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include "busybox.h" #include "busybox.h"
#include "pwd.h"
#include "grp.h"
#define PASSWD_FILE "/etc/passwd"
#define SHADOW_FILE "/etc/shadow"
/* structs __________________________ */ /* structs __________________________ */
@ -56,9 +52,6 @@ static const char default_home_prefix[] = "/home";
static const char default_shell[] = "/bin/sh"; static const char default_shell[] = "/bin/sh";
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
#include "shadow.h"
/* shadow in use? */ /* shadow in use? */
static int shadow_enabled = 0; static int shadow_enabled = 0;
#endif #endif
@ -138,47 +131,6 @@ static void passwd_wrapper(const char *login)
error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually", login); error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually", login);
} }
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
/*
* pwd_to_spwd - create entries for new spwd structure
*
* pwd_to_spwd() creates a new (struct spwd) containing the
* information in the pointed-to (struct passwd).
*/
#define DAY (24L*3600L)
#define WEEK (7*DAY)
#define SCALE DAY
static struct spwd *pwd_to_spwd(const struct passwd *pw)
{
static struct spwd sp;
/*
* Nice, easy parts first. The name and passwd map directly
* from the old password structure to the new one.
*/
sp.sp_namp = pw->pw_name;
sp.sp_pwdp = pw->pw_passwd;
/*
* Defaults used if there is no pw_age information.
*/
sp.sp_min = 0;
sp.sp_max = (10000L * DAY) / SCALE;
sp.sp_lstchg = time((time_t *) 0) / SCALE;
/*
* These fields have no corresponding information in the password
* file. They are set to uninitialized values.
*/
sp.sp_warn = -1;
sp.sp_expire = -1;
sp.sp_inact = -1;
sp.sp_flag = -1;
return &sp;
}
#endif
/* putpwent(3) remix */ /* putpwent(3) remix */
static int adduser(const char *filename, struct passwd *p) static int adduser(const char *filename, struct passwd *p)
{ {
@ -222,7 +174,7 @@ static int adduser(const char *filename, struct passwd *p)
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
/* add to shadow if necessary */ /* add to shadow if necessary */
if (shadow_enabled) { if (shadow_enabled) {
shadow = wfopen(SHADOW_FILE, "a"); shadow = wfopen(shadow_file, "a");
if (shadow == NULL) { if (shadow == NULL) {
/* return -1; */ /* return -1; */
return 1; return 1;
@ -333,7 +285,7 @@ int adduser_main(int argc, char **argv)
} }
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
/* is /etc/shadow in use? */ /* is /etc/shadow in use? */
shadow_enabled = (0 == access(SHADOW_FILE, F_OK)); shadow_enabled = (0 == access(shadow_file, F_OK));
#endif #endif
/* create a passwd struct */ /* create a passwd struct */
@ -346,7 +298,7 @@ int adduser_main(int argc, char **argv)
pw.pw_shell = (char *)shell; pw.pw_shell = (char *)shell;
/* grand finale */ /* grand finale */
return adduser(PASSWD_FILE, &pw); return adduser(passwd_file, &pw);
} }
/* $Id: adduser.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */ /* $Id: adduser.c,v 1.2 2002/06/23 04:24:24 andersen Exp $ */

17
loginutils/config.in
View File

@ -7,19 +7,22 @@ mainmenu_option next_comment
comment 'Login/Password Management Utilities' comment 'Login/Password Management Utilities'
bool 'addgroup' CONFIG_ADDGROUP bool 'addgroup' CONFIG_ADDGROUP
bool 'adduser' CONFIG_ADDUSER bool 'adduser' CONFIG_ADDUSER
bool 'deluser' CONFIG_DELUSER bool 'deluser' CONFIG_DELUSER
bool 'delgroup' CONFIG_DELUSER bool 'delgroup' CONFIG_DELUSER
bool 'getty' CONFIG_GETTY bool 'getty' CONFIG_GETTY
bool 'login' CONFIG_LOGIN bool 'login' CONFIG_LOGIN
if [ "$CONFIG_LOGIN" = "y" ]; then if [ "$CONFIG_LOGIN" = "y" ]; then
bool ' Support for /etc/securetty' CONFIG_FEATURE_SECURETTY bool ' Support for /etc/securetty' CONFIG_FEATURE_SECURETTY
fi fi
bool 'su' CONFIG_SU bool 'passwd' CONFIG_PASSWD
bool 'su' CONFIG_SU
if [ "$CONFIG_ADDUSER" = "y" -o "$CONFIG_DELUSER" = "y" -o "$CONFIG_LOGIN" = "y" -o "$CONFIG_SU" = "y" ]; then if [ "$CONFIG_ADDUSER" = "y" -o "$CONFIG_DELUSER" = "y" -o "$CONFIG_LOGIN" = "y" -o "$CONFIG_SU" = "y" ]; then
bool 'Support for shadow passwords' CONFIG_FEATURE_SHADOWPASSWDS bool ' Support for shadow passwords' CONFIG_FEATURE_SHADOWPASSWDS
fi fi
bool 'sulogin' CONFIG_SULOGIN
bool 'vlock' CONFIG_VLOCK
endmenu endmenu

28
loginutils/deluser.c
View File

@ -28,10 +28,6 @@
#include <string.h> #include <string.h>
#include "busybox.h" #include "busybox.h"
#define PASSWD_FILE "/etc/passwd"
#define GROUP_FILE "/etc/group"
#define SHADOW_FILE "/etc/shadow"
#define GSHADOW_FILE "/etc/gshadow"
/* where to start and stop deletion */ /* where to start and stop deletion */
@ -123,11 +119,11 @@ int delgroup_main(int argc, char **argv)
show_usage(); show_usage();
} else { } else {
failure = del_line_matching(argv[1], GROUP_FILE); failure = del_line_matching(argv[1], group_file);
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
if (access(GSHADOW_FILE, W_OK) == 0) { if (access(gshadow_file, W_OK) == 0) {
/* EDR the |= works if the error is not 0, so he had it wrong */ /* EDR the |= works if the error is not 0, so he had it wrong */
failure |= del_line_matching(argv[1], GSHADOW_FILE); failure |= del_line_matching(argv[1], gshadow_file);
} }
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */ #endif /* CONFIG_FEATURE_SHADOWPASSWDS */
/* if (!successful) { */ /* if (!successful) { */
@ -149,35 +145,35 @@ int deluser_main(int argc, char **argv)
show_usage(); show_usage();
} else { } else {
failure = del_line_matching(argv[1], PASSWD_FILE); failure = del_line_matching(argv[1], passwd_file);
/* if (!successful) { */ /* if (!successful) { */
if (failure) { if (failure) {
error_msg_and_die("%s: User could not be removed from %s\n", error_msg_and_die("%s: User could not be removed from %s\n",
argv[1], PASSWD_FILE); argv[1], passwd_file);
} }
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
failure = del_line_matching(argv[1], SHADOW_FILE); failure = del_line_matching(argv[1], shadow_file);
/* if (!successful) { */ /* if (!successful) { */
if (failure) { if (failure) {
error_msg_and_die("%s: User could not be removed from %s\n", error_msg_and_die("%s: User could not be removed from %s\n",
argv[1], SHADOW_FILE); argv[1], shadow_file);
} }
failure = del_line_matching(argv[1], GSHADOW_FILE); failure = del_line_matching(argv[1], gshadow_file);
/* if (!successful) { */ /* if (!successful) { */
if (failure) { if (failure) {
error_msg_and_die("%s: User could not be removed from %s\n", error_msg_and_die("%s: User could not be removed from %s\n",
argv[1], GSHADOW_FILE); argv[1], gshadow_file);
} }
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */ #endif /* CONFIG_FEATURE_SHADOWPASSWDS */
failure = del_line_matching(argv[1], GROUP_FILE); failure = del_line_matching(argv[1], group_file);
/* if (!successful) { */ /* if (!successful) { */
if (failure) { if (failure) {
error_msg_and_die("%s: User could not be removed from %s\n", error_msg_and_die("%s: User could not be removed from %s\n",
argv[1], GROUP_FILE); argv[1], group_file);
} }
} }
return (EXIT_SUCCESS); return (EXIT_SUCCESS);
} }
/* $Id: deluser.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */ /* $Id: deluser.c,v 1.2 2002/06/23 04:24:24 andersen Exp $ */

43
loginutils/login.c
View File

@ -14,16 +14,9 @@
#include <sys/types.h> #include <sys/types.h>
#include <ctype.h> #include <ctype.h>
#include <time.h> #include <time.h>
#include "busybox.h" #include "busybox.h"
#include "pwd.h"
#include "grp.h"
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
#include "shadow.h"
#endif
#include "tinylogin.h"
// import from utmp.c // import from utmp.c
static void checkutmp(int picky); static void checkutmp(int picky);
@ -35,12 +28,7 @@ extern char *pw_encrypt(const char *clear, const char *salt);
// login defines // login defines
#define TIMEOUT 60 #define TIMEOUT 60
#define FAIL_DELAY 3
#define EMPTY_USERNAME_COUNT 10 #define EMPTY_USERNAME_COUNT 10
#define MOTD_FILE "/etc/motd"
#define NOLOGIN_FILE "/etc/nologin"
#define SECURETTY_FILE "/etc/securetty"
#define USERNAME_SIZE 32 #define USERNAME_SIZE 32
/* Stuff global to this file */ /* Stuff global to this file */
@ -81,7 +69,9 @@ extern int login_main(int argc, char **argv)
int failed; int failed;
int count=0; int count=0;
struct passwd *pw, pw_copy; struct passwd *pw, pw_copy;
#ifdef CONFIG_WHEEL_GROUP
struct group *grp;
#endif
int opt_preserve = 0; int opt_preserve = 0;
int opt_fflag = 0; int opt_fflag = 0;
char *opt_host = 0; char *opt_host = 0;
@ -283,11 +273,11 @@ static int login_prompt ( char *buf_name )
static int check_nologin ( int amroot ) static int check_nologin ( int amroot )
{ {
if ( access ( NOLOGIN_FILE, F_OK ) == 0 ) { if ( access ( nologin_file, F_OK ) == 0 ) {
FILE *fp; FILE *fp;
int c; int c;
if (( fp = fopen ( NOLOGIN_FILE, "r" ))) { if (( fp = fopen ( nologin_file, "r" ))) {
while (( c = getc ( fp )) != EOF ) while (( c = getc ( fp )) != EOF )
putchar (( c == '\n' ) ? '\r' : c ); putchar (( c == '\n' ) ? '\r' : c );
@ -312,7 +302,7 @@ static int check_tty ( const char *tty )
int i; int i;
char buf[BUFSIZ]; char buf[BUFSIZ];
if (( fp = fopen ( SECURETTY_FILE, "r" ))) { if (( fp = fopen ( securetty_file, "r" ))) {
while ( fgets ( buf, sizeof( buf ) - 1, fp )) { while ( fgets ( buf, sizeof( buf ) - 1, fp )) {
for ( i = xstrlen( buf ) - 1; i >= 0; --i ) { for ( i = xstrlen( buf ) - 1; i >= 0; --i ) {
if ( !isspace ( buf[i] )) if ( !isspace ( buf[i] ))
@ -358,7 +348,7 @@ static void motd ( )
FILE *fp; FILE *fp;
register int c; register int c;
if (( fp = fopen ( MOTD_FILE, "r" ))) { if (( fp = fopen ( motd_file, "r" ))) {
while (( c = getc ( fp )) != EOF ) while (( c = getc ( fp )) != EOF )
putchar ( c ); putchar ( c );
fclose ( fp ); fclose ( fp );
@ -429,23 +419,6 @@ static void checkutmp(int picky)
} }
} }
#if __GNU_LIBRARY__ < 5
/*
* Some systems already have updwtmp() and possibly updwtmpx(). Others
* don't, so we re-implement these functions if necessary. --marekm
*/
static void updwtmp(const char *filename, const struct utmp *ut)
{
int fd;
fd = open(filename, O_APPEND | O_WRONLY, 0);
if (fd >= 0) {
write(fd, (const char *) ut, sizeof(*ut));
close(fd);
}
}
#endif
/* /*
* setutmp - put a USER_PROCESS entry in the utmp file * setutmp - put a USER_PROCESS entry in the utmp file
* *

408
loginutils/passwd.c Normal file
View File

@ -0,0 +1,408 @@
/* vi: set sw=4 ts=4: */
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <utime.h>
#include <syslog.h>
#include <time.h>
#include <sys/resource.h>
#include <errno.h>
#include "busybox.h"
static char crypt_passwd[128];
static int create_backup(const char *backup, FILE * fp);
static int new_password(const struct passwd *pw, int amroot, int algo);
static void set_filesize_limit(int blocks);
int get_algo(char *a)
{
int x = 0; /* standart: DES */
if (strcasecmp(a, "md5") == 0)
x = 1;
return x;
}
extern int update_passwd(const struct passwd *pw, char *crypt_pw)
{
char filename[1024];
char buf[1025];
char buffer[80];
char username[32];
char *pw_rest;
int has_shadow = 0;
int mask;
int continued;
FILE *fp;
FILE *out_fp;
struct stat sb;
struct flock lock;
if (access(shadow_file, F_OK) == 0) {
has_shadow = 1;
}
if (has_shadow) {
snprintf(filename, sizeof filename, "%s", shadow_file);
} else {
snprintf(filename, sizeof filename, "%s", passwd_file);
}
if (((fp = fopen(filename, "r+")) == 0) || (fstat(fileno(fp), &sb))) {
/* return 0; */
return 1;
}
/* Lock the password file before updating */
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
if (fcntl(fileno(fp), F_SETLK, &lock) < 0) {
fprintf(stderr, "%s: %s\n", filename, strerror(errno));
return 1;
}
lock.l_type = F_UNLCK;
snprintf(buf, sizeof buf, "%s-", filename);
if (create_backup(buf, fp)) {
fcntl(fileno(fp), F_SETLK, &lock);
fclose(fp);
return 1;
}
snprintf(buf, sizeof buf, "%s+", filename);
mask = umask(0777);
out_fp = fopen(buf, "w");
umask(mask);
if ((!out_fp) || (fchmod(fileno(out_fp), sb.st_mode & 0777))
|| (fchown(fileno(out_fp), sb.st_uid, sb.st_gid))) {
fcntl(fileno(fp), F_SETLK, &lock);
fclose(fp);
fclose(out_fp);
return 1;
}
continued = 0;
snprintf(username, sizeof username, "%s:", pw->pw_name);
rewind(fp);
while (!feof(fp)) {
fgets(buffer, sizeof buffer, fp);
if (!continued) { // Check to see if we're updating this line.
if (strncmp(username, buffer, strlen(username)) == 0) { // we have a match.
pw_rest = strchr(buffer, ':');
*pw_rest++ = '\0';
pw_rest = strchr(pw_rest, ':');
fprintf(out_fp, "%s:%s%s", buffer, crypt_pw, pw_rest);
} else {
fputs(buffer, out_fp);
}
} else {
fputs(buffer, out_fp);
}
if (buffer[strlen(buffer) - 1] == '\n') {
continued = 0;
} else {
continued = 1;
}
bzero(buffer, sizeof buffer);
}
if (fflush(out_fp) || fsync(fileno(out_fp)) || fclose(out_fp)) {
unlink(buf);
fcntl(fileno(fp), F_SETLK, &lock);
fclose(fp);
return 1;
}
if (rename(buf, filename) < 0) {
fcntl(fileno(fp), F_SETLK, &lock);
fclose(fp);
return 1;
} else {
fcntl(fileno(fp), F_SETLK, &lock);
fclose(fp);
return 0;
}
}
extern int passwd_main(int argc, char **argv)
{
int amroot;
char *cp;
char *np;
char *name;
char *myname;
int flag;
int algo = 0; /* -a - password algorithm */
int lflg = 0; /* -l - lock account */
int uflg = 0; /* -u - unlock account */
int dflg = 0; /* -d - delete password */
const struct passwd *pw;
unsigned short ruid;
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
const struct spwd *sp;
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
amroot = (getuid() == 0);
openlog("passwd", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_AUTH);
while ((flag = getopt(argc, argv, "a:dlu")) != EOF) {
switch (flag) {
case 'a':
algo = get_algo(optarg);
break;
case 'd':
dflg++;
break;
case 'l':
lflg++;
break;
case 'u':
uflg++;
break;
default:
show_usage();
}
}
ruid = getuid();
pw = (struct passwd *) getpwuid(ruid);
if (!pw) {
error_msg_and_die("Cannot determine your user name.\n");
}
myname = (char *) xstrdup(pw->pw_name);
if (optind < argc) {
name = argv[optind];
} else {
name = myname;
}
if ((lflg || uflg || dflg) && (optind >= argc || !amroot)) {
show_usage();
}
pw = getpwnam(name);
if (!pw) {
error_msg_and_die("Unknown user %s\n", name);
}
if (!amroot && pw->pw_uid != getuid()) {
syslog(LOG_WARNING, "can't change pwd for `%s'", name);
error_msg_and_die("Permission denied.\n");
}
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
sp = getspnam(name);
if (!sp) {
sp = (struct spwd *) pwd_to_spwd(pw);
}
cp = sp->sp_pwdp;
np = sp->sp_namp;
#else
cp = pw->pw_passwd;
np = name;
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
safe_strncpy(crypt_passwd, cp, sizeof(crypt_passwd));
if (!(dflg || lflg || uflg)) {
if (!amroot) {
if (cp[0] == '!') {
syslog(LOG_WARNING, "password locked for `%s'", np);
error_msg_and_die( "The password for `%s' cannot be changed.\n", np);
}
}
printf("Changing password for %s\n", name);
if (new_password(pw, amroot, algo)) {
error_msg_and_die( "The password for %s is unchanged.\n", name);
}
} else if (lflg) {
if (crypt_passwd[0] != '!') {
memmove(&crypt_passwd[1], crypt_passwd,
sizeof crypt_passwd - 1);
crypt_passwd[sizeof crypt_passwd - 1] = '\0';
crypt_passwd[0] = '!';
}
} else if (uflg) {
if (crypt_passwd[0] == '!') {
memmove(crypt_passwd, &crypt_passwd[1],
sizeof crypt_passwd - 1);
}
} else if (dflg) {
crypt_passwd[0] = '\0';
}
set_filesize_limit(30000);
signal(SIGHUP, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
umask(077);
if (setuid(0)) {
syslog(LOG_ERR, "can't setuid(0)");
error_msg_and_die( "Cannot change ID to root.\n");
}
if (!update_passwd(pw, crypt_passwd)) {
syslog(LOG_INFO, "password for `%s' changed by user `%s'", name,
myname);
printf("Password changed.\n");
} else {
syslog(LOG_WARNING,
"an error occurred updating the password file");
error_msg_and_die("An error occurred updating the password file.\n");
}
return (0);
}
static int create_backup(const char *backup, FILE * fp)
{
struct stat sb;
struct utimbuf ub;
FILE *bkfp;
int c, mask;
if (fstat(fileno(fp), &sb))
/* return -1; */
return 1;
mask = umask(077);
bkfp = fopen(backup, "w");
umask(mask);
if (!bkfp)
/* return -1; */
return 1;
/* TODO: faster copy, not one-char-at-a-time. --marekm */
rewind(fp);
while ((c = getc(fp)) != EOF) {
if (putc(c, bkfp) == EOF)
break;
}
if (c != EOF || fflush(bkfp)) {
fclose(bkfp);
/* return -1; */
return 1;
}
if (fclose(bkfp))
/* return -1; */
return 1;
ub.actime = sb.st_atime;
ub.modtime = sb.st_mtime;
utime(backup, &ub);
return 0;
}
static int i64c(int i)
{
if (i <= 0)
return ('.');
if (i == 1)
return ('/');
if (i >= 2 && i < 12)
return ('0' - 2 + i);
if (i >= 12 && i < 38)
return ('A' - 12 + i);
if (i >= 38 && i < 63)
return ('a' - 38 + i);
return ('z');
}
static char *crypt_make_salt(void)
{
time_t now;
static unsigned long x;
static char result[3];
time(&now);
x += now + getpid() + clock();
result[0] = i64c(((x >> 18) ^ (x >> 6)) & 077);
result[1] = i64c(((x >> 12) ^ x) & 077);
result[2] = '\0';
return result;
}
static int new_password(const struct passwd *pw, int amroot, int algo)
{
char *clear;
char *cipher;
char *cp;
char orig[200];
char pass[200];
time_t start, now;
if (!amroot && crypt_passwd[0]) {
if (!(clear = getpass("Old password:"))) {
/* return -1; */
return 1;
}
cipher = pw_encrypt(clear, crypt_passwd);
if (strcmp(cipher, crypt_passwd) != 0) {
syslog(LOG_WARNING, "incorrect password for `%s'",
pw->pw_name);
time(&start);
now = start;
while (difftime(now, start) < FAIL_DELAY) {
sleep(FAIL_DELAY);
time(&now);
}
fprintf(stderr, "Incorrect password.\n");
/* return -1; */
return 1;
}
safe_strncpy(orig, clear, sizeof(orig));
bzero(clear, strlen(clear));
bzero(cipher, strlen(cipher));
} else {
orig[0] = '\0';
}
if (!
(cp =
getpass ("Enter the new password (minimum of 5, maximum of 8 characters)\n""
Please use a combination of upper and lower case letters and numbers.\nEnter new password: ")))
{
bzero(orig, sizeof orig);
/* return -1; */
return 1;
}
safe_strncpy(pass, cp, sizeof(pass));
bzero(cp, strlen(cp));
/* if (!obscure(orig, pass, pw)) { */
if (obscure(orig, pass, pw)) {
if (amroot) {
printf("\nWarning: weak password (continuing).\n");
} else {
/* return -1; */
return 1;
}
}
if (!(cp = getpass("Re-enter new password: "))) {
bzero(orig, sizeof orig);
/* return -1; */
return 1;
}
if (strcmp(cp, pass)) {
fprintf(stderr, "Passwords do not match.\n");
/* return -1; */
return 1;
}
bzero(cp, strlen(cp));
bzero(orig, sizeof(orig));
if (algo == 1) {
cp = pw_encrypt(pass, "$1$");
} else
cp = pw_encrypt(pass, crypt_make_salt());
bzero(pass, sizeof pass);
safe_strncpy(crypt_passwd, cp, sizeof(crypt_passwd));
return 0;
}
static void set_filesize_limit(int blocks)
{
struct rlimit rlimit_fsize;
rlimit_fsize.rlim_cur = rlimit_fsize.rlim_max = 512L * blocks;
setrlimit(RLIMIT_FSIZE, &rlimit_fsize);
}

9
loginutils/su.c
View File

@ -1,7 +1,5 @@
/* vi: set sw=4 ts=4: */ /* vi: set sw=4 ts=4: */
#include "busybox.h"
#include <fcntl.h> #include <fcntl.h>
#include <signal.h> #include <signal.h>
#include <stdio.h> #include <stdio.h>
@ -18,10 +16,7 @@
#include <ctype.h> #include <ctype.h>
#include <time.h> #include <time.h>
#include "pwd.h" #include "busybox.h"
#include "grp.h"
#include "tinylogin.h"
@ -161,7 +156,7 @@ int su_main ( int argc, char **argv )
change_identity ( pw ); change_identity ( pw );
setup_environment ( opt_shell, opt_loginshell, !opt_preserve, pw ); setup_environment ( opt_shell, opt_loginshell, !opt_preserve, pw );
run_shell ( opt_shell, opt_loginshell, opt_command, opt_args ); run_shell ( opt_shell, opt_loginshell, opt_command, (const char**)opt_args );
return EXIT_FAILURE; return EXIT_FAILURE;
} }

184
loginutils/sulogin.c Normal file
View File

@ -0,0 +1,184 @@
/* vi: set sw=4 ts=4: */
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <termios.h>
#include <unistd.h>
#include <utmp.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <ctype.h>
#include <time.h>
#include "busybox.h"
// sulogin defines
#define SULOGIN_PROMPT "\nGive root password for system maintenance\n" \
"(or type Control-D for normal startup):"
static const char *forbid[] = {
"ENV",
"BASH_ENV",
"HOME",
"IFS",
"PATH",
"SHELL",
"LD_LIBRARY_PATH",
"LD_PRELOAD",
"LD_TRACE_LOADED_OBJECTS",
"LD_BIND_NOW",
"LD_AOUT_LIBRARY_PATH",
"LD_AOUT_PRELOAD",
"LD_NOWARN",
"LD_KEEPDIR",
(char *) 0
};
static void catchalarm(int junk)
{
exit(EXIT_FAILURE);
}
extern int sulogin_main(int argc, char **argv)
{
char *cp;
char *device = (char *) 0;
const char *name = "root";
int timeout = 0;
static char pass[BUFSIZ];
struct termios termio;
struct passwd pwent;
struct passwd *pwd;
time_t start, now;
const char **p;
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
struct spwd *spwd = NULL;
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
tcgetattr(0, &termio);
/* set control chars */
termio.c_cc[VINTR] = 3; /* C-c */
termio.c_cc[VQUIT] = 28; /* C-\ */
termio.c_cc[VERASE] = 127; /* C-? */
termio.c_cc[VKILL] = 21; /* C-u */
termio.c_cc[VEOF] = 4; /* C-d */
termio.c_cc[VSTART] = 17; /* C-q */
termio.c_cc[VSTOP] = 19; /* C-s */
termio.c_cc[VSUSP] = 26; /* C-z */
/* use line dicipline 0 */
termio.c_line = 0;
/* Make it be sane */
termio.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
termio.c_cflag |= CREAD|HUPCL|CLOCAL;
/* input modes */
termio.c_iflag = ICRNL | IXON | IXOFF;
/* output modes */
termio.c_oflag = OPOST | ONLCR;
/* local modes */
termio.c_lflag = ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
tcsetattr(0, TCSANOW, &termio);
openlog("sulogin", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_AUTH);
if (argc > 1) {
if (strncmp(argv[1], "-t", 2) == 0) {
if (strcmp(argv[1], "-t") == 0) {
if (argc > 2) {
timeout = atoi(argv[2]);
if (argc > 3) {
device = argv[3];
}
}
} else {
if (argc > 2) {
device = argv[2];
}
}
} else {
device = argv[1];
}
if (device) {
close(0);
close(1);
close(2);
if (open(device, O_RDWR) >= 0) {
dup(0);
dup(0);
} else {
syslog(LOG_WARNING, "cannot open %s\n", device);
exit(EXIT_FAILURE);
}
}
}
if (access(passwd_file, 0) == -1) {
syslog(LOG_WARNING, "No password file\n");
error_msg_and_die("No password file\n");
}
if (!isatty(0) || !isatty(1) || !isatty(2)) {
exit(EXIT_FAILURE);
}
/* Clear out anything dangerous from the environment */
for (p = forbid; *p; p++)
unsetenv(*p);
signal(SIGALRM, catchalarm);
alarm(timeout);
if (!(pwd = getpwnam(name))) {
syslog(LOG_WARNING, "No password entry for `root'\n");
error_msg_and_die("No password entry for `root'\n");
}
pwent = *pwd;
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
spwd = NULL;
if (pwd && ((strcmp(pwd->pw_passwd, "x") == 0)
|| (strcmp(pwd->pw_passwd, "*") == 0))) {
endspent();
spwd = getspnam(name);
if (spwd) {
pwent.pw_passwd = spwd->sp_pwdp;
}
}
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
while (1) {
cp = getpass(SULOGIN_PROMPT);
if (!cp || !*cp) {
puts("\n");
fflush(stdout);
syslog(LOG_INFO, "Normal startup\n");
exit(EXIT_SUCCESS);
} else {
safe_strncpy(pass, cp, sizeof(pass));
bzero(cp, strlen(cp));
}
if (strcmp(pw_encrypt(pass, pwent.pw_passwd), pwent.pw_passwd) == 0) {
break;
}
time(&start);
now = start;
while (difftime(now, start) < FAIL_DELAY) {
sleep(FAIL_DELAY);
time(&now);
}
puts("Login incorrect");
fflush(stdout);
syslog(LOG_WARNING, "Incorrect root password\n");
}
bzero(pass, strlen(pass));
alarm(0);
signal(SIGALRM, SIG_DFL);
puts("Entering System Maintenance Mode\n");
fflush(stdout);
syslog(LOG_INFO, "System Maintenance Mode\n");
run_shell(pwent.pw_shell, 1, 0, 0);
return (0);
}

10
loginutils/tinylogin.h
View File

@ -1,10 +0,0 @@
#ifndef BB_LOGINUTILS_SHELL_H
#define BB_LOGINUTILS_SHELL_H
extern void change_identity ( const struct passwd *pw );
extern void run_shell ( const char *shell, int loginshell, const char *command, char **additional_args );
extern int restricted_shell ( const char *shell );
extern void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw );
extern int correct_password ( const struct passwd *pw );
#endif

229
loginutils/vlock.c Normal file
View File

@ -0,0 +1,229 @@
/* vi: set sw=4 ts=4: */
/*
* vlock implementation for busybox
*
* Copyright (C) 2000 by spoon <spoon@ix.netcom.com>
* Written by spoon <spon@ix.netcom.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* Shoutz to Michael K. Johnson <johnsonm@redhat.com>, author of the
* original vlock. I snagged a bunch of his code to write this
* minimalistic vlock.
*/
/* Fixed by Erik Andersen to do passwords the tinylogin way...
* It now works with md5, sha1, etc passwords. */
#include <stdio.h>
#include <sys/vt.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <termios.h>
#include "busybox.h"
static struct passwd *pw;
static struct spwd *spw;
static struct vt_mode ovtm;
static struct termios oterm;
static int vfd;
static int o_lock_all = 0;
/* getspuid - get a shadow entry by uid */
struct spwd *getspuid(uid_t uid)
{
struct spwd *sp;
struct passwd *mypw;
if ((mypw = getpwuid(getuid())) == NULL) {
return (NULL);
}
setspent();
while ((sp = getspent()) != NULL) {
if (strcmp(mypw->pw_name, sp->sp_namp) == 0)
break;
}
endspent();
return (sp);
}
static void release_vt(int signo)
{
if (!o_lock_all)
ioctl(vfd, VT_RELDISP, 1);
else
ioctl(vfd, VT_RELDISP, 0);
}
static void acquire_vt(int signo)
{
ioctl(vfd, VT_RELDISP, VT_ACKACQ);
}
static void restore_terminal(void)
{
ioctl(vfd, VT_SETMODE, &ovtm);
tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
}
extern int vlock_main(int argc, char **argv)
{
sigset_t sig;
struct sigaction sa;
struct vt_mode vtm;
int times = 0;
struct termios term;
if (argc > 2) {
show_usage();
}
if (argc == 2) {
if (strncmp(argv[1], "-a", 2)) {
show_usage();
} else {
o_lock_all = 1;
}
}
if ((pw = getpwuid(getuid())) == NULL) {
error_msg_and_die("no password for uid %d\n", getuid());
}
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
if ((strcmp(pw->pw_passwd, "x") == 0)
|| (strcmp(pw->pw_passwd, "*") == 0)) {
if ((spw = getspuid(getuid())) == NULL) {
error_msg_and_die("could not read shadow password for uid %d: %s\n",
getuid(), strerror(errno));
}
if (spw->sp_pwdp) {
pw->pw_passwd = spw->sp_pwdp;
}
}
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
if (pw->pw_passwd[0] == '!' || pw->pw_passwd[0] == '*') {
error_msg_and_die("Account disabled for uid %d\n", getuid());
}
/* we no longer need root privs */
setuid(getuid());
setgid(getgid());
if ((vfd = open("/dev/tty", O_RDWR)) < 0) {
error_msg_and_die("/dev/tty");
};
if (ioctl(vfd, VT_GETMODE, &vtm) < 0) {
error_msg_and_die("/dev/tty");
};
/* mask a bunch of signals */
sigprocmask(SIG_SETMASK, NULL, &sig);
sigdelset(&sig, SIGUSR1);
sigdelset(&sig, SIGUSR2);
sigaddset(&sig, SIGTSTP);
sigaddset(&sig, SIGTTIN);
sigaddset(&sig, SIGTTOU);
sigaddset(&sig, SIGHUP);
sigaddset(&sig, SIGCHLD);
sigaddset(&sig, SIGQUIT);
sigaddset(&sig, SIGINT);
sigemptyset(&(sa.sa_mask));
sa.sa_flags = SA_RESTART;
sa.sa_handler = release_vt;
sigaction(SIGUSR1, &sa, NULL);
sa.sa_handler = acquire_vt;
sigaction(SIGUSR2, &sa, NULL);
/* need to handle some signals so that we don't get killed by them */
sa.sa_handler = SIG_IGN;
sigaction(SIGHUP, &sa, NULL);
sigaction(SIGQUIT, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
sigaction(SIGTSTP, &sa, NULL);
ovtm = vtm;
vtm.mode = VT_PROCESS;
vtm.relsig = SIGUSR1;
vtm.acqsig = SIGUSR2;
ioctl(vfd, VT_SETMODE, &vtm);
tcgetattr(STDIN_FILENO, &oterm);
term = oterm;
term.c_iflag &= ~BRKINT;
term.c_iflag |= IGNBRK;
term.c_lflag &= ~ISIG;
term.c_lflag &= ~(ECHO | ECHOCTL);
tcsetattr(STDIN_FILENO, TCSANOW, &term);
do {
char *pass, *crypt_pass;
char prompt[100];
if (o_lock_all) {
printf("All Virtual Consoles locked.\n");
} else {
printf("This Virtual Console locked.\n");
}
fflush(stdout);
snprintf(prompt, 100, "%s's password: ", pw->pw_name);
if ((pass = getpass(prompt)) == NULL) {
perror("getpass");
restore_terminal();
exit(1);
}
crypt_pass = pw_encrypt(pass, pw->pw_passwd);
if (strncmp(crypt_pass, pw->pw_passwd, sizeof(crypt_pass)) == 0) {
memset(pass, 0, strlen(pass));
memset(crypt_pass, 0, strlen(crypt_pass));
restore_terminal();
return 0;
}
memset(pass, 0, strlen(pass));
memset(crypt_pass, 0, strlen(crypt_pass));
if (isatty(STDIN_FILENO) == 0) {
perror("isatty");
restore_terminal();
exit(1);
}
sleep(++times);
printf("Password incorrect.\n");
if (times >= 3) {
sleep(15);
times = 2;
}
} while (1);
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/