2554 lines
62 KiB
C
2554 lines
62 KiB
C
/* $NetBSD: user.c,v 1.129 2011/12/01 00:34:05 dholland Exp $ */
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/*
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* Copyright (c) 1999 Alistair G. Crooks. All rights reserved.
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* Copyright (c) 2005 Liam J. Foy. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1999\
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The NetBSD Foundation, Inc. All rights reserved.");
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__RCSID("$NetBSD: user.c,v 1.129 2011/12/01 00:34:05 dholland Exp $");
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#endif
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <err.h>
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#include <fcntl.h>
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#include <grp.h>
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#ifdef EXTENSIONS
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#include <login_cap.h>
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#endif
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#include <pwd.h>
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#include <regex.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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#include <util.h>
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#include <errno.h>
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#include "pathnames.h"
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#include "defs.h"
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#include "usermgmt.h"
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/* this struct describes a uid range */
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typedef struct range_t {
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int r_from; /* low uid */
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int r_to; /* high uid */
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} range_t;
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typedef struct rangelist_t {
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unsigned rl_rsize; /* size of range array */
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unsigned rl_rc; /* # of ranges */
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range_t *rl_rv; /* the ranges */
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unsigned rl_defrc; /* # of ranges in defaults */
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} rangelist_t;
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/* this struct encapsulates the user and group information */
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typedef struct user_t {
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int u_flags; /* see below */
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int u_uid; /* uid of user */
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char *u_password; /* encrypted password */
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char *u_comment; /* comment field */
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char *u_home; /* home directory */
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mode_t u_homeperm; /* permissions of home dir */
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char *u_primgrp; /* primary group */
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int u_groupc; /* # of secondary groups */
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const char *u_groupv[NGROUPS_MAX]; /* secondary groups */
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char *u_shell; /* user's shell */
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char *u_basedir; /* base directory for home */
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char *u_expire; /* when password will expire */
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char *u_inactive; /* when account will expire */
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char *u_skeldir; /* directory for startup files */
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char *u_class; /* login class */
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rangelist_t u_r; /* list of ranges */
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unsigned u_defrc; /* # of ranges in defaults */
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int u_preserve; /* preserve uids on deletion */
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int u_allow_samba; /* allow trailing '$' for samba login names */
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int u_locked; /* user account lock */
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} user_t;
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#define u_rsize u_r.rl_rsize
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#define u_rc u_r.rl_rc
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#define u_rv u_r.rl_rv
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#define u_defrc u_r.rl_defrc
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/* this struct encapsulates the user and group information */
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typedef struct group_t {
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rangelist_t g_r; /* list of ranges */
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} group_t;
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#define g_rsize g_r.rl_rsize
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#define g_rc g_r.rl_rc
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#define g_rv g_r.rl_rv
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#define g_defrc g_r.rl_defrc
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typedef struct def_t {
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user_t user;
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group_t group;
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} def_t;
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/* flags for which fields of the user_t replace the passwd entry */
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enum {
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F_COMMENT = 0x0001,
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F_DUPUID = 0x0002,
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F_EXPIRE = 0x0004,
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F_GROUP = 0x0008,
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F_HOMEDIR = 0x0010,
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F_MKDIR = 0x0020,
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F_INACTIVE = 0x0040,
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F_PASSWORD = 0x0080,
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F_SECGROUP = 0x0100,
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F_SHELL = 0x0200,
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F_UID = 0x0400,
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F_USERNAME = 0x0800,
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F_CLASS = 0x1000
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};
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#define UNLOCK 0
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#define LOCK 1
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#define LOCKED "*LOCKED*"
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#ifndef DEF_GROUP
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#define DEF_GROUP "users"
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#endif
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#ifndef DEF_BASEDIR
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#define DEF_BASEDIR "/home"
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#endif
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#ifndef DEF_SKELDIR
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#define DEF_SKELDIR "/etc/skel"
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#endif
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#ifndef DEF_SHELL
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#define DEF_SHELL _PATH_BSHELL
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#endif
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#ifndef DEF_COMMENT
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#define DEF_COMMENT ""
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#endif
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#ifndef DEF_LOWUID
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#define DEF_LOWUID 1000
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#endif
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#ifndef DEF_HIGHUID
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#define DEF_HIGHUID 60000
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#endif
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#ifndef DEF_INACTIVE
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#define DEF_INACTIVE 0
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#endif
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#ifndef DEF_EXPIRE
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#define DEF_EXPIRE NULL
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#endif
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#ifndef DEF_CLASS
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#define DEF_CLASS ""
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#endif
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#ifndef WAITSECS
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#define WAITSECS 10
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#endif
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#ifndef NOBODY_UID
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#define NOBODY_UID 32767
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#endif
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#ifndef DEF_HOMEPERM
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#define DEF_HOMEPERM 0755
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#endif
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/* some useful constants */
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enum {
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MaxShellNameLen = 256,
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MaxFileNameLen = MAXPATHLEN,
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MaxUserNameLen = LOGIN_NAME_MAX - 1,
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MaxCommandLen = 2048,
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MaxEntryLen = 2048,
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PasswordLength = 2048,
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DES_Len = 13,
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};
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#define UNSET_INACTIVE "Null (unset)"
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#define UNSET_EXPIRY "Null (unset)"
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static int asystem(const char *fmt, ...) __printflike(1, 2);
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static int is_number(const char *);
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static struct group *find_group_info(const char *);
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static int verbose;
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static char *
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skipspace(char *s)
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{
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for (; *s && isspace((unsigned char)*s) ; s++) {
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}
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return s;
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}
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static int
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check_numeric(const char *val, const char *name)
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{
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if (!is_number(val)) {
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errx(EXIT_FAILURE, "When using [-%c %s], "
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"the %s must be numeric", *name, name, name);
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}
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return atoi(val);
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}
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/* resize *cpp appropriately then assign `n' chars of `s' to it */
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static void
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memsave(char **cpp, const char *s, size_t n)
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{
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RENEW(char, *cpp, n + 1, exit(1));
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(void)memcpy(*cpp, s, n);
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(*cpp)[n] = '\0';
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}
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/* a replacement for system(3) */
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static int
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asystem(const char *fmt, ...)
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{
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va_list vp;
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char buf[MaxCommandLen];
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int ret;
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va_start(vp, fmt);
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(void)vsnprintf(buf, sizeof(buf), fmt, vp);
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va_end(vp);
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if (verbose) {
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(void)printf("Command: %s\n", buf);
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}
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ret = system(buf);
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if (ret == -1) {
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warn("Error running `%s'", buf);
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} else if (WIFSIGNALED(ret)) {
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warnx("Error running `%s': Signal %d", buf, WTERMSIG(ret));
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} else if (WIFEXITED(ret) && WEXITSTATUS(ret) != 0) {
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warnx("Error running `%s': Exit %d", buf, WEXITSTATUS(ret));
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}
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return ret;
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}
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/* remove a users home directory, returning 1 for success (ie, no problems encountered) */
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static int
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removehomedir(struct passwd *pwp)
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{
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struct stat st;
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/* userid not root? */
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if (pwp->pw_uid == 0) {
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warnx("Not deleting home directory `%s'; userid is 0", pwp->pw_dir);
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return 0;
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}
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/* directory exists (and is a directory!) */
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if (stat(pwp->pw_dir, &st) < 0) {
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warn("Cannot access home directory `%s'", pwp->pw_dir);
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return 0;
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}
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if (!S_ISDIR(st.st_mode)) {
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warnx("Home directory `%s' is not a directory", pwp->pw_dir);
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return 0;
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}
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/* userid matches directory owner? */
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if (st.st_uid != pwp->pw_uid) {
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warnx("User `%s' doesn't own directory `%s', not removed",
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pwp->pw_name, pwp->pw_dir);
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return 0;
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}
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(void)seteuid(pwp->pw_uid);
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/* we add the "|| true" to keep asystem() quiet if there is a non-zero exit status. */
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(void)asystem("%s -rf %s > /dev/null 2>&1 || true", _PATH_RM,
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pwp->pw_dir);
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(void)seteuid(0);
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if (rmdir(pwp->pw_dir) < 0) {
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warn("Unable to remove all files in `%s'", pwp->pw_dir);
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return 0;
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}
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return 1;
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}
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/* return 1 if all of `s' is numeric */
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static int
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is_number(const char *s)
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{
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for ( ; *s ; s++) {
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if (!isdigit((unsigned char) *s)) {
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return 0;
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}
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}
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return 1;
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}
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/*
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* check that the effective uid is 0 - called from funcs which will
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* modify data and config files.
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*/
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static void
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checkeuid(void)
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{
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if (geteuid() != 0) {
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errx(EXIT_FAILURE, "Program must be run as root");
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}
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}
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/* copy any dot files into the user's home directory */
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static int
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copydotfiles(char *skeldir, int uid, int gid, char *dir, mode_t homeperm)
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{
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struct dirent *dp;
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DIR *dirp;
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int n;
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if ((dirp = opendir(skeldir)) == NULL) {
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warn("Can't open source . files dir `%s'", skeldir);
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return 0;
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}
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for (n = 0; (dp = readdir(dirp)) != NULL && n == 0 ; ) {
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if (strcmp(dp->d_name, ".") == 0 ||
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strcmp(dp->d_name, "..") == 0) {
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continue;
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}
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n = 1;
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}
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(void)closedir(dirp);
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if (n == 0) {
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warnx("No \"dot\" initialisation files found");
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} else {
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(void)asystem("cd %s && %s -rw -pe %s . %s",
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skeldir, _PATH_PAX, (verbose) ? "-v" : "", dir);
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}
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(void)asystem("%s -R -h %d:%d %s", _PATH_CHOWN, uid, gid, dir);
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(void)asystem("%s -R u+w %s", _PATH_CHMOD, dir);
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#ifdef EXTENSIONS
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(void)asystem("%s 0%o %s", _PATH_CHMOD, homeperm, dir);
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#endif
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return n;
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}
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/* create a group entry with gid `gid' */
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static int
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creategid(char *group, int gid, const char *name)
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{
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struct stat st;
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FILE *from;
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FILE *to;
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char buf[MaxEntryLen];
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char f[MaxFileNameLen];
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int fd;
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int cc;
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if (getgrnam(group) != NULL) {
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warnx("Can't create group `%s': already exists", group);
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return 0;
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}
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if ((from = fopen(_PATH_GROUP, "r")) == NULL) {
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warn("Can't create group `%s': can't open `%s'", name,
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_PATH_GROUP);
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return 0;
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}
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if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) {
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warn("Can't lock `%s'", _PATH_GROUP);
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(void)fclose(from);
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return 0;
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}
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(void)fstat(fileno(from), &st);
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(void)snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP);
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if ((fd = mkstemp(f)) < 0) {
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warn("Can't create group `%s': mkstemp failed", group);
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(void)fclose(from);
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return 0;
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}
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if ((to = fdopen(fd, "w")) == NULL) {
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warn("Can't create group `%s': fdopen `%s' failed",
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group, f);
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(void)fclose(from);
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(void)close(fd);
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(void)unlink(f);
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return 0;
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}
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while ((cc = fread(buf, sizeof(char), sizeof(buf), from)) > 0) {
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if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) {
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warn("Can't create group `%s': short write to `%s'",
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group, f);
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(void)fclose(from);
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(void)close(fd);
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(void)unlink(f);
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return 0;
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}
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}
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(void)fprintf(to, "%s:*:%d:%s\n", group, gid, name);
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(void)fclose(from);
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(void)fclose(to);
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if (rename(f, _PATH_GROUP) < 0) {
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warn("Can't create group `%s': can't rename `%s' to `%s'",
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group, f, _PATH_GROUP);
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(void)unlink(f);
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return 0;
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}
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(void)chmod(_PATH_GROUP, st.st_mode & 07777);
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syslog(LOG_INFO, "New group added: name=%s, gid=%d", group, gid);
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return 1;
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}
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/* modify the group entry with name `group' to be newent */
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static int
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modify_gid(char *group, char *newent)
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{
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struct stat st;
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FILE *from;
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FILE *to;
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char buf[MaxEntryLen];
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char f[MaxFileNameLen];
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char *colon;
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int groupc;
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int entc;
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int fd;
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int cc;
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if ((from = fopen(_PATH_GROUP, "r")) == NULL) {
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warn("Can't modify group `%s': can't open `%s'",
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group, _PATH_GROUP);
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return 0;
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}
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if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) {
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warn("Can't modify group `%s': can't lock `%s'",
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group, _PATH_GROUP);
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(void)fclose(from);
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return 0;
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}
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(void)fstat(fileno(from), &st);
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(void)snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP);
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if ((fd = mkstemp(f)) < 0) {
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warn("Can't modify group `%s': mkstemp failed", group);
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(void)fclose(from);
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return 0;
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}
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if ((to = fdopen(fd, "w")) == NULL) {
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warn("Can't modify group `%s': fdopen `%s' failed", group, f);
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(void)fclose(from);
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(void)close(fd);
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(void)unlink(f);
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return 0;
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}
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groupc = strlen(group);
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while (fgets(buf, sizeof(buf), from) != NULL) {
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cc = strlen(buf);
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if ((colon = strchr(buf, ':')) == NULL) {
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warnx("Badly formed entry `%s'", buf);
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continue;
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}
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entc = (int)(colon - buf);
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if (entc == groupc &&
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strncmp(group, buf, (unsigned) entc) == 0) {
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if (newent == NULL) {
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struct group *grp_rm;
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struct passwd *user_pwd;
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/*
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* Check that the group being removed
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* isn't any user's Primary group. Just
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* warn if it is. This could cause problems
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* if the group GID was reused for a
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* different purpose.
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*/
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grp_rm = find_group_info(group);
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while ((user_pwd = getpwent()) != NULL) {
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if (user_pwd->pw_gid == grp_rm->gr_gid) {
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warnx("Warning: group `%s'(%d)"
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" is the primary group of"
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" `%s'. Use caution if you"
|
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" later add this GID.",
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grp_rm->gr_name,
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grp_rm->gr_gid, user_pwd->pw_name);
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}
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}
|
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endpwent();
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continue;
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} else {
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cc = strlen(newent);
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(void)strlcpy(buf, newent, sizeof(buf));
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}
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}
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if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) {
|
|
warn("Can't modify group `%s': short write to `%s'",
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group, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
}
|
|
(void)fclose(from);
|
|
(void)fclose(to);
|
|
if (rename(f, _PATH_GROUP) < 0) {
|
|
warn("Can't modify group `%s': can't rename `%s' to `%s'",
|
|
group, f, _PATH_GROUP);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
(void)chmod(_PATH_GROUP, st.st_mode & 07777);
|
|
if (newent == NULL) {
|
|
syslog(LOG_INFO, "group deleted: name=%s", group);
|
|
} else {
|
|
syslog(LOG_INFO, "group information modified: name=%s", group);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* modify the group entries for all `groups', by adding `user' */
|
|
static int
|
|
append_group(char *user, int ngroups, const char **groups)
|
|
{
|
|
struct group *grp;
|
|
struct stat st;
|
|
FILE *from;
|
|
FILE *to;
|
|
char buf[MaxEntryLen];
|
|
char f[MaxFileNameLen];
|
|
char *colon;
|
|
int groupc;
|
|
int entc;
|
|
int fd;
|
|
int nc;
|
|
int cc;
|
|
int i;
|
|
int j;
|
|
|
|
for (i = 0 ; i < ngroups ; i++) {
|
|
if ((grp = getgrnam(groups[i])) == NULL) {
|
|
warnx("Can't append group `%s' for user `%s'",
|
|
groups[i], user);
|
|
} else {
|
|
for (j = 0 ; grp->gr_mem[j] ; j++) {
|
|
if (strcmp(user, grp->gr_mem[j]) == 0) {
|
|
/* already in it */
|
|
groups[i] = "";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ((from = fopen(_PATH_GROUP, "r")) == NULL) {
|
|
warn("Can't append group(s) for `%s': can't open `%s'",
|
|
user, _PATH_GROUP);
|
|
return 0;
|
|
}
|
|
if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) {
|
|
warn("Can't append group(s) for `%s': can't lock `%s'",
|
|
user, _PATH_GROUP);
|
|
(void)fclose(from);
|
|
return 0;
|
|
}
|
|
(void)fstat(fileno(from), &st);
|
|
(void)snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP);
|
|
if ((fd = mkstemp(f)) < 0) {
|
|
warn("Can't append group(s) for `%s': mkstemp failed",
|
|
user);
|
|
(void)fclose(from);
|
|
return 0;
|
|
}
|
|
if ((to = fdopen(fd, "w")) == NULL) {
|
|
warn("Can't append group(s) for `%s': fdopen `%s' failed",
|
|
user, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
while (fgets(buf, sizeof(buf), from) != NULL) {
|
|
cc = strlen(buf);
|
|
if ((colon = strchr(buf, ':')) == NULL) {
|
|
warnx("Badly formed entry `%s'", buf);
|
|
continue;
|
|
}
|
|
entc = (int)(colon - buf);
|
|
for (i = 0 ; i < ngroups ; i++) {
|
|
if ((groupc = strlen(groups[i])) == 0) {
|
|
continue;
|
|
}
|
|
if (entc == groupc &&
|
|
strncmp(groups[i], buf, (unsigned) entc) == 0) {
|
|
if ((nc = snprintf(&buf[cc - 1],
|
|
sizeof(buf) - cc + 1, "%s%s\n",
|
|
(buf[cc - 2] == ':') ? "" : ",", user)) < 0) {
|
|
warnx("Warning: group `%s' "
|
|
"entry too long", groups[i]);
|
|
}
|
|
cc += nc - 1;
|
|
}
|
|
}
|
|
if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) {
|
|
warn("Can't append group(s) for `%s':"
|
|
" short write to `%s'", user, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
}
|
|
(void)fclose(from);
|
|
(void)fclose(to);
|
|
if (rename(f, _PATH_GROUP) < 0) {
|
|
warn("Can't append group(s) for `%s': "
|
|
"can't rename `%s' to `%s'", user, f, _PATH_GROUP);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
(void)chmod(_PATH_GROUP, st.st_mode & 07777);
|
|
return 1;
|
|
}
|
|
|
|
/* the valid characters for login and group names */
|
|
#define VALID_CHAR(c) (isalnum(c) || (c) == '.' || (c) == '_' || (c) == '-')
|
|
|
|
/* return 1 if `login' is a valid login name */
|
|
static int
|
|
valid_login(char *login_name, int allow_samba)
|
|
{
|
|
unsigned char *cp;
|
|
|
|
/* First character of a login name cannot be '-'. */
|
|
if (*login_name == '-') {
|
|
return 0;
|
|
}
|
|
if (strlen(login_name) >= LOGIN_NAME_MAX) {
|
|
return 0;
|
|
}
|
|
for (cp = (unsigned char *)login_name ; *cp ; cp++) {
|
|
if (!VALID_CHAR(*cp)) {
|
|
#ifdef EXTENSIONS
|
|
/* check for a trailing '$' in a Samba user name */
|
|
if (allow_samba && *cp == '$' && *(cp + 1) == 0x0) {
|
|
return 1;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* return 1 if `group' is a valid group name */
|
|
static int
|
|
valid_group(char *group)
|
|
{
|
|
unsigned char *cp;
|
|
|
|
for (cp = (unsigned char *)group; *cp; cp++) {
|
|
if (!VALID_CHAR(*cp)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* find the next gid in the range lo .. hi */
|
|
static int
|
|
getnextgid(int *gidp, int lo, int hi)
|
|
{
|
|
for (*gidp = lo ; *gidp < hi ; *gidp += 1) {
|
|
if (getgrgid((gid_t)*gidp) == NULL) {
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
/* save a range of uids */
|
|
static int
|
|
save_range(rangelist_t *rlp, char *cp)
|
|
{
|
|
int from;
|
|
int to;
|
|
int i;
|
|
|
|
if (rlp->rl_rsize == 0) {
|
|
rlp->rl_rsize = 32;
|
|
NEWARRAY(range_t, rlp->rl_rv, rlp->rl_rsize, return(0));
|
|
} else if (rlp->rl_rc == rlp->rl_rsize) {
|
|
rlp->rl_rsize *= 2;
|
|
RENEW(range_t, rlp->rl_rv, rlp->rl_rsize, return(0));
|
|
}
|
|
if (rlp->rl_rv && sscanf(cp, "%d..%d", &from, &to) == 2) {
|
|
for (i = rlp->rl_defrc ; i < rlp->rl_rc ; i++) {
|
|
if (rlp->rl_rv[i].r_from == from &&
|
|
rlp->rl_rv[i].r_to == to) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == rlp->rl_rc) {
|
|
rlp->rl_rv[rlp->rl_rc].r_from = from;
|
|
rlp->rl_rv[rlp->rl_rc].r_to = to;
|
|
rlp->rl_rc += 1;
|
|
}
|
|
} else {
|
|
warnx("Bad range `%s'", cp);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/* set the defaults in the defaults file */
|
|
static int
|
|
setdefaults(user_t *up)
|
|
{
|
|
char template[MaxFileNameLen];
|
|
FILE *fp;
|
|
int ret;
|
|
int fd;
|
|
#ifdef EXTENSIONS
|
|
int i;
|
|
#endif
|
|
|
|
(void)snprintf(template, sizeof(template), "%s.XXXXXX",
|
|
_PATH_USERMGMT_CONF);
|
|
if ((fd = mkstemp(template)) < 0) {
|
|
warn("Can't set defaults: can't mkstemp `%s' for writing",
|
|
_PATH_USERMGMT_CONF);
|
|
return 0;
|
|
}
|
|
if ((fp = fdopen(fd, "w")) == NULL) {
|
|
warn("Can't set defaults: can't fdopen `%s' for writing",
|
|
_PATH_USERMGMT_CONF);
|
|
return 0;
|
|
}
|
|
ret = 1;
|
|
if (fprintf(fp, "group\t\t%s\n", up->u_primgrp) <= 0 ||
|
|
fprintf(fp, "base_dir\t%s\n", up->u_basedir) <= 0 ||
|
|
fprintf(fp, "skel_dir\t%s\n", up->u_skeldir) <= 0 ||
|
|
fprintf(fp, "shell\t\t%s\n", up->u_shell) <= 0 ||
|
|
#ifdef EXTENSIONS
|
|
fprintf(fp, "class\t\t%s\n", up->u_class) <= 0 ||
|
|
fprintf(fp, "homeperm\t0%o\n", up->u_homeperm) <= 0 ||
|
|
#endif
|
|
fprintf(fp, "inactive\t%s\n", (up->u_inactive == NULL) ?
|
|
UNSET_INACTIVE : up->u_inactive) <= 0 ||
|
|
fprintf(fp, "expire\t\t%s\n", (up->u_expire == NULL) ?
|
|
UNSET_EXPIRY : up->u_expire) <= 0 ||
|
|
fprintf(fp, "preserve\t%s\n", (up->u_preserve == 0) ?
|
|
"false" : "true") <= 0) {
|
|
warn("Can't write to `%s'", _PATH_USERMGMT_CONF);
|
|
ret = 0;
|
|
}
|
|
#ifdef EXTENSIONS
|
|
for (i = (up->u_defrc != up->u_rc) ? up->u_defrc : 0;
|
|
i < up->u_rc ; i++) {
|
|
if (fprintf(fp, "range\t\t%d..%d\n", up->u_rv[i].r_from,
|
|
up->u_rv[i].r_to) <= 0) {
|
|
warn("Can't set defaults: can't write to `%s'",
|
|
_PATH_USERMGMT_CONF);
|
|
ret = 0;
|
|
}
|
|
}
|
|
#endif
|
|
(void)fclose(fp);
|
|
if (ret) {
|
|
ret = ((rename(template, _PATH_USERMGMT_CONF) == 0) &&
|
|
(chmod(_PATH_USERMGMT_CONF, 0644) == 0));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* read the defaults file */
|
|
static void
|
|
read_defaults(def_t *dp)
|
|
{
|
|
struct stat st;
|
|
size_t lineno;
|
|
size_t len;
|
|
FILE *fp;
|
|
char *cp;
|
|
char *s;
|
|
user_t *up = &dp->user;
|
|
group_t *gp = &dp->group;
|
|
|
|
(void)memset(dp, 0, sizeof(*dp));
|
|
|
|
memsave(&up->u_primgrp, DEF_GROUP, strlen(DEF_GROUP));
|
|
memsave(&up->u_basedir, DEF_BASEDIR, strlen(DEF_BASEDIR));
|
|
memsave(&up->u_skeldir, DEF_SKELDIR, strlen(DEF_SKELDIR));
|
|
memsave(&up->u_shell, DEF_SHELL, strlen(DEF_SHELL));
|
|
memsave(&up->u_comment, DEF_COMMENT, strlen(DEF_COMMENT));
|
|
#ifdef EXTENSIONS
|
|
memsave(&up->u_class, DEF_CLASS, strlen(DEF_CLASS));
|
|
#endif
|
|
up->u_rsize = 16;
|
|
up->u_defrc = 0;
|
|
NEWARRAY(range_t, up->u_rv, up->u_rsize, exit(1));
|
|
up->u_inactive = DEF_INACTIVE;
|
|
up->u_expire = DEF_EXPIRE;
|
|
gp->g_rsize = 16;
|
|
gp->g_defrc = 0;
|
|
NEWARRAY(range_t, gp->g_rv, gp->g_rsize, exit(1));
|
|
if ((fp = fopen(_PATH_USERMGMT_CONF, "r")) == NULL) {
|
|
if (stat(_PATH_USERMGMT_CONF, &st) < 0 && !setdefaults(up)) {
|
|
warn("Can't create `%s' defaults file",
|
|
_PATH_USERMGMT_CONF);
|
|
}
|
|
fp = fopen(_PATH_USERMGMT_CONF, "r");
|
|
}
|
|
if (fp != NULL) {
|
|
while ((s = fparseln(fp, &len, &lineno, NULL, 0)) != NULL) {
|
|
if (strncmp(s, "group", 5) == 0) {
|
|
cp = skipspace(s + 5);
|
|
memsave(&up->u_primgrp, (char *)cp, strlen(cp));
|
|
} else if (strncmp(s, "base_dir", 8) == 0) {
|
|
cp = skipspace(s + 8);
|
|
memsave(&up->u_basedir, (char *)cp, strlen(cp));
|
|
} else if (strncmp(s, "skel_dir", 8) == 0) {
|
|
cp = skipspace(s + 8);
|
|
memsave(&up->u_skeldir, (char *)cp, strlen(cp));
|
|
} else if (strncmp(s, "shell", 5) == 0) {
|
|
cp = skipspace(s + 5);
|
|
memsave(&up->u_shell, cp, strlen(cp));
|
|
#ifdef EXTENSIONS
|
|
} else if (strncmp((char *)s, "class", 5) == 0) {
|
|
cp = skipspace(s + 5);
|
|
memsave(&up->u_class, cp, strlen(cp));
|
|
#endif
|
|
#ifdef EXTENSIONS
|
|
} else if (strncmp(s, "homeperm", 8) == 0) {
|
|
for (cp = s + 8; *cp &&
|
|
isspace((unsigned char)*cp); cp++)
|
|
;
|
|
up->u_homeperm = strtoul(cp, NULL, 8);
|
|
#endif
|
|
} else if (strncmp(s, "inactive", 8) == 0) {
|
|
cp = skipspace(s + 8);
|
|
if (strcmp(cp, UNSET_INACTIVE) == 0) {
|
|
if (up->u_inactive) {
|
|
FREE(up->u_inactive);
|
|
}
|
|
up->u_inactive = NULL;
|
|
} else {
|
|
memsave(&up->u_inactive, cp, strlen(cp));
|
|
}
|
|
#ifdef EXTENSIONS
|
|
} else if (strncmp(s, "range", 5) == 0) {
|
|
cp = skipspace(s + 5);
|
|
(void)save_range(&up->u_r, cp);
|
|
#endif
|
|
#ifdef EXTENSIONS
|
|
} else if (strncmp(s, "preserve", 8) == 0) {
|
|
cp = skipspace(s + 8);
|
|
up->u_preserve =
|
|
(strncmp(cp, "true", 4) == 0) ? 1 :
|
|
(strncmp(cp, "yes", 3) == 0) ? 1 : atoi(cp);
|
|
#endif
|
|
} else if (strncmp(s, "expire", 6) == 0) {
|
|
cp = skipspace(s + 6);
|
|
if (strcmp(cp, UNSET_EXPIRY) == 0) {
|
|
if (up->u_expire) {
|
|
FREE(up->u_expire);
|
|
}
|
|
up->u_expire = NULL;
|
|
} else {
|
|
memsave(&up->u_expire, cp, strlen(cp));
|
|
}
|
|
#ifdef EXTENSIONS
|
|
} else if (strncmp(s, "gid_range", 9) == 0) {
|
|
cp = skipspace(s + 9);
|
|
(void)save_range(&gp->g_r, cp);
|
|
#endif
|
|
}
|
|
(void)free(s);
|
|
}
|
|
(void)fclose(fp);
|
|
}
|
|
if (up->u_rc == 0) {
|
|
up->u_rv[up->u_rc].r_from = DEF_LOWUID;
|
|
up->u_rv[up->u_rc].r_to = DEF_HIGHUID;
|
|
up->u_rc += 1;
|
|
}
|
|
up->u_defrc = up->u_rc;
|
|
up->u_homeperm = DEF_HOMEPERM;
|
|
}
|
|
|
|
/* return the next valid unused uid */
|
|
static int
|
|
getnextuid(int sync_uid_gid, int *uid, int low_uid, int high_uid)
|
|
{
|
|
for (*uid = low_uid ; *uid <= high_uid ; (*uid)++) {
|
|
if (getpwuid((uid_t)(*uid)) == NULL && *uid != NOBODY_UID) {
|
|
if (sync_uid_gid) {
|
|
if (getgrgid((gid_t)(*uid)) == NULL) {
|
|
return 1;
|
|
}
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* structure which defines a password type */
|
|
typedef struct passwd_type_t {
|
|
const char *type; /* optional type descriptor */
|
|
size_t desc_length; /* length of type descriptor */
|
|
size_t length; /* length of password */
|
|
const char *regex; /* regexp to output the password */
|
|
size_t re_sub; /* subscript of regexp to use */
|
|
} passwd_type_t;
|
|
|
|
static passwd_type_t passwd_types[] = {
|
|
{ "$sha1", 5, 28, "\\$[^$]+\\$[^$]+\\$[^$]+\\$(.*)", 1 }, /* SHA1 */
|
|
{ "$2a", 3, 53, "\\$[^$]+\\$[^$]+\\$(.*)", 1 }, /* Blowfish */
|
|
{ "$1", 2, 34, NULL, 0 }, /* MD5 */
|
|
{ "", 0, DES_Len,NULL, 0 }, /* standard DES */
|
|
{ NULL, (size_t)~0, (size_t)~0, NULL, 0 }
|
|
/* none - terminate search */
|
|
};
|
|
|
|
/* return non-zero if it's a valid password - check length for cipher type */
|
|
static int
|
|
valid_password_length(char *newpasswd)
|
|
{
|
|
passwd_type_t *pwtp;
|
|
regmatch_t matchv[10];
|
|
regex_t r;
|
|
|
|
for (pwtp = passwd_types; pwtp->desc_length != (size_t)~0; pwtp++) {
|
|
if (strncmp(newpasswd, pwtp->type, pwtp->desc_length) == 0) {
|
|
if (pwtp->regex == NULL) {
|
|
return strlen(newpasswd) == pwtp->length;
|
|
}
|
|
(void)regcomp(&r, pwtp->regex, REG_EXTENDED);
|
|
if (regexec(&r, newpasswd, 10, matchv, 0) == 0) {
|
|
regfree(&r);
|
|
return (int)(matchv[pwtp->re_sub].rm_eo -
|
|
matchv[pwtp->re_sub].rm_so) ==
|
|
pwtp->length;
|
|
}
|
|
regfree(&r);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
/* return 1 if `class' is a valid login class */
|
|
static int
|
|
valid_class(char *class)
|
|
{
|
|
login_cap_t *lc;
|
|
|
|
if (class == NULL || *class == '\0') {
|
|
return 1;
|
|
}
|
|
/*
|
|
* Check if /etc/login.conf exists. login_getclass() will
|
|
* return 1 due to it not existing, so not informing the
|
|
* user the actual login class does not exist.
|
|
*/
|
|
|
|
if (access(_PATH_LOGINCONF, R_OK) == -1) {
|
|
warn("Access failed for `%s'; will not validate class `%s'",
|
|
_PATH_LOGINCONF, class);
|
|
return 1;
|
|
}
|
|
|
|
if ((lc = login_getclass(class)) != NULL) {
|
|
login_close(lc);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* return 1 if the `shellname' is a valid user shell */
|
|
static int
|
|
valid_shell(const char *shellname)
|
|
{
|
|
char *shellp;
|
|
|
|
if (access(_PATH_SHELLS, R_OK) == -1) {
|
|
/* Don't exit */
|
|
warn("Access failed for `%s'; will not validate shell `%s'",
|
|
_PATH_SHELLS, shellname);
|
|
return 1;
|
|
}
|
|
|
|
/* if nologin is used as a shell, consider it a valid shell */
|
|
if (strcmp(shellname, _PATH_SBIN_NOLOGIN) == 0)
|
|
return 1;
|
|
|
|
while ((shellp = getusershell()) != NULL)
|
|
if (strcmp(shellp, shellname) == 0)
|
|
return 1;
|
|
|
|
warnx("Shell `%s' not found in `%s'", shellname, _PATH_SHELLS);
|
|
|
|
return access(shellname, X_OK) != -1;
|
|
}
|
|
#endif
|
|
|
|
/* look for a valid time, return 0 if it was specified but bad */
|
|
static int
|
|
scantime(time_t *tp, char *s)
|
|
{
|
|
struct tm tm;
|
|
char *ep;
|
|
long val;
|
|
|
|
*tp = 0;
|
|
if (s != NULL) {
|
|
(void)memset(&tm, 0, sizeof(tm));
|
|
if (strptime(s, "%c", &tm) != NULL) {
|
|
*tp = mktime(&tm);
|
|
return (*tp == -1) ? 0 : 1;
|
|
} else if (strptime(s, "%B %d %Y", &tm) != NULL) {
|
|
*tp = mktime(&tm);
|
|
return (*tp == -1) ? 0 : 1;
|
|
} else {
|
|
errno = 0;
|
|
*tp = val = strtol(s, &ep, 10);
|
|
if (*ep != '\0' || *tp < -1 || errno == ERANGE) {
|
|
*tp = 0;
|
|
return 0;
|
|
}
|
|
if (*tp != val) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* add a user */
|
|
static int
|
|
adduser(char *login_name, user_t *up)
|
|
{
|
|
struct group *grp;
|
|
struct stat st;
|
|
time_t expire;
|
|
time_t inactive;
|
|
char password[PasswordLength + 1];
|
|
char home[MaxFileNameLen];
|
|
char buf[MaxFileNameLen];
|
|
int sync_uid_gid;
|
|
int masterfd;
|
|
int ptmpfd;
|
|
int gid;
|
|
int cc;
|
|
int i;
|
|
|
|
if (!valid_login(login_name, up->u_allow_samba)) {
|
|
errx(EXIT_FAILURE, "Can't add user `%s': invalid login name", login_name);
|
|
}
|
|
#ifdef EXTENSIONS
|
|
if (!valid_class(up->u_class)) {
|
|
errx(EXIT_FAILURE, "Can't add user `%s': no such login class `%s'",
|
|
login_name, up->u_class);
|
|
}
|
|
#endif
|
|
if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) {
|
|
err(EXIT_FAILURE, "Can't add user `%s': can't open `%s'",
|
|
login_name, _PATH_MASTERPASSWD);
|
|
}
|
|
if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) {
|
|
err(EXIT_FAILURE, "Can't add user `%s': can't lock `%s'",
|
|
login_name, _PATH_MASTERPASSWD);
|
|
}
|
|
pw_init();
|
|
if ((ptmpfd = pw_lock(WAITSECS)) < 0) {
|
|
int serrno = errno;
|
|
(void)close(masterfd);
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't add user `%s': can't obtain pw_lock",
|
|
login_name);
|
|
}
|
|
while ((cc = read(masterfd, buf, sizeof(buf))) > 0) {
|
|
if (write(ptmpfd, buf, (size_t)(cc)) != cc) {
|
|
int serrno = errno;
|
|
(void)close(masterfd);
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't add user `%s': "
|
|
"short write to /etc/ptmp", login_name);
|
|
}
|
|
}
|
|
(void)close(masterfd);
|
|
/* if no uid was specified, get next one in [low_uid..high_uid] range */
|
|
sync_uid_gid = (strcmp(up->u_primgrp, "=uid") == 0);
|
|
if (up->u_uid == -1) {
|
|
int got_id = 0;
|
|
|
|
/*
|
|
* Look for a free UID in the command line ranges (if any).
|
|
* These start after the ranges specified in the config file.
|
|
*/
|
|
for (i = up->u_defrc; !got_id && i < up->u_rc ; i++) {
|
|
got_id = getnextuid(sync_uid_gid, &up->u_uid,
|
|
up->u_rv[i].r_from, up->u_rv[i].r_to);
|
|
}
|
|
/*
|
|
* If there were no free UIDs in the command line ranges,
|
|
* try the ranges from the config file (there will always
|
|
* be at least one default).
|
|
*/
|
|
for (i = 0; !got_id && i < up->u_defrc; i++) {
|
|
got_id = getnextuid(sync_uid_gid, &up->u_uid,
|
|
up->u_rv[i].r_from, up->u_rv[i].r_to);
|
|
}
|
|
if (!got_id) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"can't get next uid for %d", login_name,
|
|
up->u_uid);
|
|
}
|
|
}
|
|
/* check uid isn't already allocated */
|
|
if (!(up->u_flags & F_DUPUID) && getpwuid((uid_t)(up->u_uid)) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"uid %d is already in use", login_name, up->u_uid);
|
|
}
|
|
/* if -g=uid was specified, check gid is unused */
|
|
if (sync_uid_gid) {
|
|
if (getgrgid((gid_t)(up->u_uid)) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"gid %d is already in use", login_name,
|
|
up->u_uid);
|
|
}
|
|
gid = up->u_uid;
|
|
} else if ((grp = getgrnam(up->u_primgrp)) != NULL) {
|
|
gid = grp->gr_gid;
|
|
} else if (is_number(up->u_primgrp) &&
|
|
(grp = getgrgid((gid_t)atoi(up->u_primgrp))) != NULL) {
|
|
gid = grp->gr_gid;
|
|
} else {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': group %s not found",
|
|
login_name, up->u_primgrp);
|
|
}
|
|
/* check name isn't already in use */
|
|
if (!(up->u_flags & F_DUPUID) && getpwnam(login_name) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"`%s' is already a user", login_name, login_name);
|
|
}
|
|
if (up->u_flags & F_HOMEDIR) {
|
|
(void)strlcpy(home, up->u_home, sizeof(home));
|
|
} else {
|
|
/* if home directory hasn't been given, make it up */
|
|
(void)snprintf(home, sizeof(home), "%s/%s", up->u_basedir,
|
|
login_name);
|
|
}
|
|
if (up->u_flags & F_SHELL) {
|
|
#ifdef EXTENSIONS
|
|
if (!valid_shell(up->u_shell)) {
|
|
int oerrno = errno;
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = oerrno;
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"Cannot access shell `%s'",
|
|
login_name, up->u_shell);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (!scantime(&inactive, up->u_inactive)) {
|
|
warnx("Warning: inactive time `%s' invalid, password expiry off",
|
|
up->u_inactive);
|
|
}
|
|
if (!scantime(&expire, up->u_expire) || expire == -1) {
|
|
warnx("Warning: expire time `%s' invalid, account expiry off",
|
|
up->u_expire);
|
|
expire = 0; /* Just in case. */
|
|
}
|
|
if (lstat(home, &st) < 0 && !(up->u_flags & F_MKDIR)) {
|
|
warnx("Warning: home directory `%s' doesn't exist, "
|
|
"and -m was not specified", home);
|
|
}
|
|
password[sizeof(password) - 1] = '\0';
|
|
if (up->u_password != NULL && valid_password_length(up->u_password)) {
|
|
(void)strlcpy(password, up->u_password, sizeof(password));
|
|
} else {
|
|
(void)memset(password, '*', DES_Len);
|
|
password[DES_Len] = 0;
|
|
if (up->u_password != NULL) {
|
|
warnx("Password `%s' is invalid: setting it to `%s'",
|
|
up->u_password, password);
|
|
}
|
|
}
|
|
cc = snprintf(buf, sizeof(buf), "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
|
|
login_name,
|
|
password,
|
|
up->u_uid,
|
|
gid,
|
|
#ifdef EXTENSIONS
|
|
up->u_class,
|
|
#else
|
|
"",
|
|
#endif
|
|
(long) inactive,
|
|
(long) expire,
|
|
up->u_comment,
|
|
home,
|
|
up->u_shell);
|
|
if (write(ptmpfd, buf, (size_t) cc) != cc) {
|
|
int serrno = errno;
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't add user `%s': write failed",
|
|
login_name);
|
|
}
|
|
if (up->u_flags & F_MKDIR) {
|
|
if (lstat(home, &st) == 0) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE,
|
|
"Can't add user `%s': home directory `%s' "
|
|
"already exists", login_name, home);
|
|
} else {
|
|
if (asystem("%s -p %s", _PATH_MKDIR, home) != 0) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': "
|
|
"can't mkdir `%s'", login_name, home);
|
|
}
|
|
(void)copydotfiles(up->u_skeldir, up->u_uid, gid, home,
|
|
up->u_homeperm);
|
|
}
|
|
}
|
|
if (strcmp(up->u_primgrp, "=uid") == 0 &&
|
|
getgrnam(login_name) == NULL &&
|
|
!creategid(login_name, gid, login_name)) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': can't create gid %d ",
|
|
login_name, gid);
|
|
}
|
|
if (up->u_groupc > 0 &&
|
|
!append_group(login_name, up->u_groupc, up->u_groupv)) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': can't append "
|
|
"to new groups", login_name);
|
|
}
|
|
(void)close(ptmpfd);
|
|
#if PW_MKDB_ARGC == 2
|
|
if (pw_mkdb(login_name, 0) < 0)
|
|
#else
|
|
if (pw_mkdb() < 0)
|
|
#endif
|
|
{
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't add user `%s': pw_mkdb failed",
|
|
login_name);
|
|
}
|
|
syslog(LOG_INFO, "New user added: name=%s, uid=%d, gid=%d, home=%s, "
|
|
"shell=%s", login_name, up->u_uid, gid, home, up->u_shell);
|
|
return 1;
|
|
}
|
|
|
|
/* remove a user from the groups file */
|
|
static int
|
|
rm_user_from_groups(char *login_name)
|
|
{
|
|
struct stat st;
|
|
regmatch_t matchv[10];
|
|
regex_t r;
|
|
FILE *from;
|
|
FILE *to;
|
|
char line[MaxEntryLen];
|
|
char buf[MaxEntryLen];
|
|
char f[MaxFileNameLen];
|
|
int fd;
|
|
int cc;
|
|
int sc;
|
|
|
|
(void)snprintf(line, sizeof(line), "(:|,)(%s)(,|$)", login_name);
|
|
if ((sc = regcomp(&r, line, REG_EXTENDED|REG_NEWLINE)) != 0) {
|
|
(void)regerror(sc, &r, buf, sizeof(buf));
|
|
warnx("Can't compile regular expression `%s' (%s)", line,
|
|
buf);
|
|
return 0;
|
|
}
|
|
if ((from = fopen(_PATH_GROUP, "r")) == NULL) {
|
|
warn("Can't remove user `%s' from `%s': can't open `%s'",
|
|
login_name, _PATH_GROUP, _PATH_GROUP);
|
|
return 0;
|
|
}
|
|
if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) {
|
|
warn("Can't remove user `%s' from `%s': can't lock `%s'",
|
|
login_name, _PATH_GROUP, _PATH_GROUP);
|
|
(void)fclose(from);
|
|
return 0;
|
|
}
|
|
(void)fstat(fileno(from), &st);
|
|
(void)snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP);
|
|
if ((fd = mkstemp(f)) < 0) {
|
|
warn("Can't remove user `%s' from `%s': mkstemp failed",
|
|
login_name, _PATH_GROUP);
|
|
(void)fclose(from);
|
|
return 0;
|
|
}
|
|
if ((to = fdopen(fd, "w")) == NULL) {
|
|
warn("Can't remove user `%s' from `%s': fdopen `%s' failed",
|
|
login_name, _PATH_GROUP, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
while (fgets(buf, sizeof(buf), from) != NULL) {
|
|
cc = strlen(buf);
|
|
if (regexec(&r, buf, 10, matchv, 0) == 0) {
|
|
if (buf[(int)matchv[1].rm_so] == ',') {
|
|
matchv[2].rm_so = matchv[1].rm_so;
|
|
} else if (matchv[2].rm_eo != matchv[3].rm_eo) {
|
|
matchv[2].rm_eo = matchv[3].rm_eo;
|
|
}
|
|
cc -= (int) matchv[2].rm_eo;
|
|
sc = (int) matchv[2].rm_so;
|
|
if (fwrite(buf, sizeof(char), (size_t)sc, to) != sc ||
|
|
fwrite(&buf[(int)matchv[2].rm_eo], sizeof(char),
|
|
(size_t)cc, to) != cc) {
|
|
warn("Can't remove user `%s' from `%s': "
|
|
"short write to `%s'", login_name,
|
|
_PATH_GROUP, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
} else if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) {
|
|
warn("Can't remove user `%s' from `%s': "
|
|
"short write to `%s'", login_name, _PATH_GROUP, f);
|
|
(void)fclose(from);
|
|
(void)close(fd);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
}
|
|
(void)fclose(from);
|
|
(void)fclose(to);
|
|
if (rename(f, _PATH_GROUP) < 0) {
|
|
warn("Can't remove user `%s' from `%s': "
|
|
"can't rename `%s' to `%s'",
|
|
login_name, _PATH_GROUP, f, _PATH_GROUP);
|
|
(void)unlink(f);
|
|
return 0;
|
|
}
|
|
(void)chmod(_PATH_GROUP, st.st_mode & 07777);
|
|
return 1;
|
|
}
|
|
|
|
/* check that the user or group is local, not from YP/NIS */
|
|
static int
|
|
is_local(char *name, const char *file)
|
|
{
|
|
FILE *fp;
|
|
char buf[MaxEntryLen];
|
|
size_t len;
|
|
int ret;
|
|
|
|
if ((fp = fopen(file, "r")) == NULL) {
|
|
err(EXIT_FAILURE, "Can't open `%s'", file);
|
|
}
|
|
len = strlen(name);
|
|
for (ret = 0 ; fgets(buf, sizeof(buf), fp) != NULL ; ) {
|
|
if (strncmp(buf, name, len) == 0 && buf[len] == ':') {
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
(void)fclose(fp);
|
|
return ret;
|
|
}
|
|
|
|
/* modify a user */
|
|
static int
|
|
moduser(char *login_name, char *newlogin, user_t *up, int allow_samba)
|
|
{
|
|
struct passwd *pwp, pw;
|
|
struct group *grp;
|
|
const char *homedir;
|
|
char *locked_pwd;
|
|
size_t colonc;
|
|
size_t loginc;
|
|
size_t len;
|
|
FILE *master;
|
|
char newdir[MaxFileNameLen];
|
|
char buf[MaxEntryLen];
|
|
char pwbuf[MaxEntryLen];
|
|
char *colon;
|
|
int masterfd;
|
|
int ptmpfd;
|
|
int error;
|
|
|
|
if (!valid_login(newlogin, allow_samba)) {
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': invalid login name",
|
|
login_name);
|
|
}
|
|
if (getpwnam_r(login_name, &pw, pwbuf, sizeof(pwbuf), &pwp) != 0
|
|
|| pwp == NULL) {
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': no such user",
|
|
login_name);
|
|
}
|
|
if (!is_local(login_name, _PATH_MASTERPASSWD)) {
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': must be a local user",
|
|
login_name);
|
|
}
|
|
/* keep dir name in case we need it for '-m' */
|
|
homedir = pwp->pw_dir;
|
|
|
|
if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) {
|
|
err(EXIT_FAILURE, "Can't modify user `%s': can't open `%s'",
|
|
login_name, _PATH_MASTERPASSWD);
|
|
}
|
|
if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) {
|
|
err(EXIT_FAILURE, "Can't modify user `%s': can't lock `%s'",
|
|
login_name, _PATH_MASTERPASSWD);
|
|
}
|
|
pw_init();
|
|
if ((ptmpfd = pw_lock(WAITSECS)) < 0) {
|
|
int serrno = errno;
|
|
(void)close(masterfd);
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"can't obtain pw_lock", login_name);
|
|
}
|
|
if ((master = fdopen(masterfd, "r")) == NULL) {
|
|
int serrno = errno;
|
|
(void)close(masterfd);
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"fdopen fd for %s", login_name, _PATH_MASTERPASSWD);
|
|
}
|
|
if (up != NULL) {
|
|
if (up->u_flags & F_USERNAME) {
|
|
/*
|
|
* If changing name,
|
|
* check new name isn't already in use
|
|
*/
|
|
if (strcmp(login_name, newlogin) != 0 &&
|
|
getpwnam(newlogin) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"`%s' is already a user", login_name,
|
|
newlogin);
|
|
}
|
|
pwp->pw_name = newlogin;
|
|
|
|
/*
|
|
* Provide a new directory name in case the
|
|
* home directory is to be moved.
|
|
*/
|
|
if (up->u_flags & F_MKDIR) {
|
|
(void)snprintf(newdir, sizeof(newdir), "%s/%s",
|
|
up->u_basedir, newlogin);
|
|
pwp->pw_dir = newdir;
|
|
}
|
|
}
|
|
if (up->u_flags & F_PASSWORD) {
|
|
if (up->u_password != NULL) {
|
|
if (!valid_password_length(up->u_password)) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE,
|
|
"Can't modify user `%s': "
|
|
"invalid password: `%s'",
|
|
login_name, up->u_password);
|
|
}
|
|
if ((locked_pwd =
|
|
strstr(pwp->pw_passwd, LOCKED)) != NULL) {
|
|
/*
|
|
* account is locked - keep it locked
|
|
* and just change the password.
|
|
*/
|
|
if (asprintf(&locked_pwd, "%s%s",
|
|
LOCKED, up->u_password) == -1) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
err(EXIT_FAILURE,
|
|
"Can't modify user `%s': "
|
|
"asprintf failed",
|
|
login_name);
|
|
}
|
|
pwp->pw_passwd = locked_pwd;
|
|
} else {
|
|
pwp->pw_passwd = up->u_password;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check whether we should lock the account. */
|
|
if (up->u_locked == LOCK) {
|
|
/* check to see account if already locked. */
|
|
if ((locked_pwd = strstr(pwp->pw_passwd, LOCKED))
|
|
!= NULL) {
|
|
warnx("Account is already locked");
|
|
} else {
|
|
if (asprintf(&locked_pwd, "%s%s", LOCKED,
|
|
pwp->pw_passwd) == -1) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
err(EXIT_FAILURE,
|
|
"Can't modify user `%s': "
|
|
"asprintf failed", login_name);
|
|
}
|
|
pwp->pw_passwd = locked_pwd;
|
|
}
|
|
} else if (up->u_locked == UNLOCK) {
|
|
if ((locked_pwd = strstr(pwp->pw_passwd, LOCKED))
|
|
== NULL) {
|
|
warnx("Can't modify user `%s': "
|
|
"account is not locked", login_name);
|
|
} else {
|
|
pwp->pw_passwd = locked_pwd + strlen(LOCKED);
|
|
}
|
|
}
|
|
|
|
if (up->u_flags & F_UID) {
|
|
/* check uid isn't already allocated */
|
|
if (!(up->u_flags & F_DUPUID) &&
|
|
getpwuid((uid_t)(up->u_uid)) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"uid `%d' is already in use", login_name,
|
|
up->u_uid);
|
|
}
|
|
pwp->pw_uid = up->u_uid;
|
|
}
|
|
if (up->u_flags & F_GROUP) {
|
|
/* if -g=uid was specified, check gid is unused */
|
|
if (strcmp(up->u_primgrp, "=uid") == 0) {
|
|
if (getgrgid((gid_t)(pwp->pw_uid)) != NULL) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE,
|
|
"Can't modify user `%s': "
|
|
"gid %d is already in use",
|
|
login_name, up->u_uid);
|
|
}
|
|
pwp->pw_gid = pwp->pw_uid;
|
|
} else if ((grp = getgrnam(up->u_primgrp)) != NULL) {
|
|
pwp->pw_gid = grp->gr_gid;
|
|
} else if (is_number(up->u_primgrp) &&
|
|
(grp = getgrgid(
|
|
(gid_t)atoi(up->u_primgrp))) != NULL) {
|
|
pwp->pw_gid = grp->gr_gid;
|
|
} else {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"group %s not found", login_name,
|
|
up->u_primgrp);
|
|
}
|
|
}
|
|
if (up->u_flags & F_INACTIVE) {
|
|
if (!scantime(&pwp->pw_change, up->u_inactive)) {
|
|
warnx("Warning: inactive time `%s' invalid, "
|
|
"password expiry off",
|
|
up->u_inactive);
|
|
}
|
|
}
|
|
if (up->u_flags & F_EXPIRE) {
|
|
if (!scantime(&pwp->pw_expire, up->u_expire) ||
|
|
pwp->pw_expire == -1) {
|
|
warnx("Warning: expire time `%s' invalid, "
|
|
"account expiry off",
|
|
up->u_expire);
|
|
pwp->pw_expire = 0;
|
|
}
|
|
}
|
|
if (up->u_flags & F_COMMENT) {
|
|
pwp->pw_gecos = up->u_comment;
|
|
}
|
|
if (up->u_flags & F_HOMEDIR) {
|
|
pwp->pw_dir = up->u_home;
|
|
}
|
|
if (up->u_flags & F_SHELL) {
|
|
#ifdef EXTENSIONS
|
|
if (!valid_shell(up->u_shell)) {
|
|
int oerrno = errno;
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = oerrno;
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"Cannot access shell `%s'",
|
|
login_name, up->u_shell);
|
|
}
|
|
pwp->pw_shell = up->u_shell;
|
|
#else
|
|
pwp->pw_shell = up->u_shell;
|
|
#endif
|
|
}
|
|
#ifdef EXTENSIONS
|
|
if (up->u_flags & F_CLASS) {
|
|
if (!valid_class(up->u_class)) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"no such login class `%s'", login_name,
|
|
up->u_class);
|
|
}
|
|
pwp->pw_class = up->u_class;
|
|
}
|
|
#endif
|
|
}
|
|
loginc = strlen(login_name);
|
|
while (fgets(buf, sizeof(buf), master) != NULL) {
|
|
if ((colon = strchr(buf, ':')) == NULL) {
|
|
warnx("Malformed entry `%s'. Skipping", buf);
|
|
continue;
|
|
}
|
|
colonc = (size_t)(colon - buf);
|
|
if (strncmp(login_name, buf, loginc) == 0 && loginc == colonc) {
|
|
if (up != NULL) {
|
|
len = snprintf(buf, sizeof(buf), "%s:%s:%d:%d:"
|
|
#ifdef EXTENSIONS
|
|
"%s"
|
|
#endif
|
|
":%ld:%ld:%s:%s:%s\n",
|
|
newlogin,
|
|
pwp->pw_passwd,
|
|
pwp->pw_uid,
|
|
pwp->pw_gid,
|
|
#ifdef EXTENSIONS
|
|
pwp->pw_class,
|
|
#endif
|
|
(long)pwp->pw_change,
|
|
(long)pwp->pw_expire,
|
|
pwp->pw_gecos,
|
|
pwp->pw_dir,
|
|
pwp->pw_shell);
|
|
if (write(ptmpfd, buf, len) != len) {
|
|
int serrno = errno;
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't modify user "
|
|
"`%s': write", login_name);
|
|
}
|
|
}
|
|
} else {
|
|
len = strlen(buf);
|
|
if (write(ptmpfd, buf, len) != len) {
|
|
int serrno = errno;
|
|
(void)close(masterfd);
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errno = serrno;
|
|
err(EXIT_FAILURE, "Can't modify `%s': "
|
|
"write", login_name);
|
|
}
|
|
}
|
|
}
|
|
if (up != NULL) {
|
|
if ((up->u_flags & F_MKDIR) &&
|
|
asystem("%s %s %s", _PATH_MV, homedir, pwp->pw_dir) != 0) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"can't move `%s' to `%s'",
|
|
login_name, homedir, pwp->pw_dir);
|
|
}
|
|
if (up->u_groupc > 0 &&
|
|
!append_group(newlogin, up->u_groupc, up->u_groupv)) {
|
|
(void)close(ptmpfd);
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': "
|
|
"can't append `%s' to new groups",
|
|
login_name, newlogin);
|
|
}
|
|
}
|
|
(void)close(ptmpfd);
|
|
(void)fclose(master);
|
|
#if PW_MKDB_ARGC == 2
|
|
if (up != NULL && strcmp(login_name, newlogin) == 0) {
|
|
error = pw_mkdb(login_name, 0);
|
|
} else {
|
|
error = pw_mkdb(NULL, 0);
|
|
}
|
|
#else
|
|
error = pw_mkdb();
|
|
#endif
|
|
if (error < 0) {
|
|
(void)pw_abort();
|
|
errx(EXIT_FAILURE, "Can't modify user `%s': pw_mkdb failed",
|
|
login_name);
|
|
}
|
|
if (up == NULL) {
|
|
syslog(LOG_INFO, "User removed: name=%s", login_name);
|
|
} else if (strcmp(login_name, newlogin) == 0) {
|
|
syslog(LOG_INFO, "User information modified: name=%s, uid=%d, "
|
|
"gid=%d, home=%s, shell=%s",
|
|
login_name, pwp->pw_uid, pwp->pw_gid, pwp->pw_dir,
|
|
pwp->pw_shell);
|
|
} else {
|
|
syslog(LOG_INFO, "User information modified: name=%s, "
|
|
"new name=%s, uid=%d, gid=%d, home=%s, shell=%s",
|
|
login_name, newlogin, pwp->pw_uid, pwp->pw_gid,
|
|
pwp->pw_dir, pwp->pw_shell);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
/* see if we can find out the user struct */
|
|
static struct passwd *
|
|
find_user_info(const char *name)
|
|
{
|
|
struct passwd *pwp;
|
|
|
|
if ((pwp = getpwnam(name)) != NULL) {
|
|
return pwp;
|
|
}
|
|
if (is_number(name) && (pwp = getpwuid((uid_t)atoi(name))) != NULL) {
|
|
return pwp;
|
|
}
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
/* see if we can find out the group struct */
|
|
static struct group *
|
|
find_group_info(const char *name)
|
|
{
|
|
struct group *grp;
|
|
|
|
if ((grp = getgrnam(name)) != NULL) {
|
|
return grp;
|
|
}
|
|
if (is_number(name) && (grp = getgrgid((gid_t)atoi(name))) != NULL) {
|
|
return grp;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* print out usage message, and then exit */
|
|
void
|
|
usermgmt_usage(const char *prog)
|
|
{
|
|
if (strcmp(prog, "useradd") == 0) {
|
|
(void)fprintf(stderr, "usage: %s -D [-F] [-b base-dir] "
|
|
"[-e expiry-time] [-f inactive-time]\n"
|
|
"\t[-g gid | name | =uid] [-k skel-dir] [-L login-class]\n"
|
|
"\t[-M homeperm] [-r lowuid..highuid] [-s shell]\n", prog);
|
|
(void)fprintf(stderr, "usage: %s [-moSv] [-b base-dir] "
|
|
"[-c comment] [-d home-dir] [-e expiry-time]\n"
|
|
"\t[-f inactive-time] [-G secondary-group] "
|
|
"[-g gid | name | =uid]\n"
|
|
"\t[-k skeletondir] [-L login-class] [-M homeperm] "
|
|
"[-p password]\n"
|
|
"\t[-r lowuid..highuid] [-s shell] [-u uid] user\n",
|
|
prog);
|
|
} else if (strcmp(prog, "usermod") == 0) {
|
|
(void)fprintf(stderr, "usage: %s [-FmoSv] [-C yes/no] "
|
|
"[-c comment] [-d home-dir] [-e expiry-time]\n"
|
|
"\t[-f inactive] [-G secondary-group] "
|
|
"[-g gid | name | =uid]\n"
|
|
"\t[-L login-class] [-l new-login] [-p password] "
|
|
"[-s shell] [-u uid]\n"
|
|
"\tuser\n", prog);
|
|
} else if (strcmp(prog, "userdel") == 0) {
|
|
(void)fprintf(stderr, "usage: %s -D [-p preserve-value]\n", prog);
|
|
(void)fprintf(stderr,
|
|
"usage: %s [-rSv] [-p preserve-value] user\n", prog);
|
|
#ifdef EXTENSIONS
|
|
} else if (strcmp(prog, "userinfo") == 0) {
|
|
(void)fprintf(stderr, "usage: %s [-e] user\n", prog);
|
|
#endif
|
|
} else if (strcmp(prog, "groupadd") == 0) {
|
|
(void)fprintf(stderr, "usage: %s [-ov] [-g gid]"
|
|
" [-r lowgid..highgid] group\n", prog);
|
|
} else if (strcmp(prog, "groupdel") == 0) {
|
|
(void)fprintf(stderr, "usage: %s [-v] group\n", prog);
|
|
} else if (strcmp(prog, "groupmod") == 0) {
|
|
(void)fprintf(stderr,
|
|
"usage: %s [-ov] [-g gid] [-n newname] group\n", prog);
|
|
} else if (strcmp(prog, "user") == 0 || strcmp(prog, "group") == 0) {
|
|
(void)fprintf(stderr,
|
|
"usage: %s ( add | del | mod | info ) ...\n", prog);
|
|
#ifdef EXTENSIONS
|
|
} else if (strcmp(prog, "groupinfo") == 0) {
|
|
(void)fprintf(stderr, "usage: %s [-ev] group\n", prog);
|
|
#endif
|
|
}
|
|
exit(EXIT_FAILURE);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define ADD_OPT_EXTENSIONS "M:p:r:vL:S"
|
|
#else
|
|
#define ADD_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
int
|
|
useradd(int argc, char **argv)
|
|
{
|
|
def_t def;
|
|
user_t *up = &def.user;
|
|
int defaultfield;
|
|
int bigD;
|
|
int c;
|
|
#ifdef EXTENSIONS
|
|
int i;
|
|
#endif
|
|
|
|
read_defaults(&def);
|
|
up->u_uid = -1;
|
|
defaultfield = bigD = 0;
|
|
while ((c = getopt(argc, argv, "DFG:b:c:d:e:f:g:k:mou:s:"
|
|
ADD_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
case 'D':
|
|
bigD = 1;
|
|
break;
|
|
case 'F':
|
|
/*
|
|
* Setting -1 will force the new user to
|
|
* change their password as soon as they
|
|
* next log in - passwd(5).
|
|
*/
|
|
defaultfield = 1;
|
|
memsave(&up->u_inactive, "-1", strlen("-1"));
|
|
break;
|
|
case 'G':
|
|
while (up->u_groupc < NGROUPS_MAX &&
|
|
(up->u_groupv[up->u_groupc] = strsep(&optarg, ",")) != NULL) {
|
|
if (up->u_groupv[up->u_groupc][0] != 0) {
|
|
up->u_groupc++;
|
|
}
|
|
}
|
|
if (optarg != NULL) {
|
|
warnx("Truncated list of secondary groups "
|
|
"to %d entries", NGROUPS_MAX);
|
|
}
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'S':
|
|
up->u_allow_samba = 1;
|
|
break;
|
|
#endif
|
|
case 'b':
|
|
defaultfield = 1;
|
|
memsave(&up->u_basedir, optarg, strlen(optarg));
|
|
break;
|
|
case 'c':
|
|
memsave(&up->u_comment, optarg, strlen(optarg));
|
|
break;
|
|
case 'd':
|
|
memsave(&up->u_home, optarg, strlen(optarg));
|
|
up->u_flags |= F_HOMEDIR;
|
|
break;
|
|
case 'e':
|
|
defaultfield = 1;
|
|
memsave(&up->u_expire, optarg, strlen(optarg));
|
|
break;
|
|
case 'f':
|
|
defaultfield = 1;
|
|
memsave(&up->u_inactive, optarg, strlen(optarg));
|
|
break;
|
|
case 'g':
|
|
defaultfield = 1;
|
|
memsave(&up->u_primgrp, optarg, strlen(optarg));
|
|
break;
|
|
case 'k':
|
|
defaultfield = 1;
|
|
memsave(&up->u_skeldir, optarg, strlen(optarg));
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'L':
|
|
defaultfield = 1;
|
|
memsave(&up->u_class, optarg, strlen(optarg));
|
|
break;
|
|
#endif
|
|
case 'm':
|
|
up->u_flags |= F_MKDIR;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'M':
|
|
defaultfield = 1;
|
|
up->u_homeperm = strtoul(optarg, NULL, 8);
|
|
break;
|
|
#endif
|
|
case 'o':
|
|
up->u_flags |= F_DUPUID;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'p':
|
|
memsave(&up->u_password, optarg, strlen(optarg));
|
|
break;
|
|
#endif
|
|
#ifdef EXTENSIONS
|
|
case 'r':
|
|
defaultfield = 1;
|
|
(void)save_range(&up->u_r, optarg);
|
|
break;
|
|
#endif
|
|
case 's':
|
|
up->u_flags |= F_SHELL;
|
|
defaultfield = 1;
|
|
memsave(&up->u_shell, optarg, strlen(optarg));
|
|
break;
|
|
case 'u':
|
|
up->u_uid = check_numeric(optarg, "uid");
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("useradd");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
if (bigD) {
|
|
if (defaultfield) {
|
|
checkeuid();
|
|
return setdefaults(up) ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
(void)printf("group\t\t%s\n", up->u_primgrp);
|
|
(void)printf("base_dir\t%s\n", up->u_basedir);
|
|
(void)printf("skel_dir\t%s\n", up->u_skeldir);
|
|
(void)printf("shell\t\t%s\n", up->u_shell);
|
|
#ifdef EXTENSIONS
|
|
(void)printf("class\t\t%s\n", up->u_class);
|
|
(void)printf("homeperm\t0%o\n", up->u_homeperm);
|
|
#endif
|
|
(void)printf("inactive\t%s\n", (up->u_inactive == NULL) ?
|
|
UNSET_INACTIVE : up->u_inactive);
|
|
(void)printf("expire\t\t%s\n", (up->u_expire == NULL) ?
|
|
UNSET_EXPIRY : up->u_expire);
|
|
#ifdef EXTENSIONS
|
|
for (i = 0 ; i < up->u_rc ; i++) {
|
|
(void)printf("range\t\t%d..%d\n",
|
|
up->u_rv[i].r_from, up->u_rv[i].r_to);
|
|
}
|
|
#endif
|
|
return EXIT_SUCCESS;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("useradd");
|
|
}
|
|
checkeuid();
|
|
openlog("useradd", LOG_PID, LOG_USER);
|
|
return adduser(*argv, up) ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define MOD_OPT_EXTENSIONS "p:vL:S"
|
|
#else
|
|
#define MOD_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
int
|
|
usermod(int argc, char **argv)
|
|
{
|
|
def_t def;
|
|
user_t *up = &def.user;
|
|
char newuser[MaxUserNameLen + 1];
|
|
int c, have_new_user;
|
|
|
|
(void)memset(newuser, 0, sizeof(newuser));
|
|
read_defaults(&def);
|
|
have_new_user = 0;
|
|
up->u_locked = -1;
|
|
while ((c = getopt(argc, argv, "C:FG:c:d:e:f:g:l:mos:u:"
|
|
MOD_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
case 'G':
|
|
while (up->u_groupc < NGROUPS_MAX &&
|
|
(up->u_groupv[up->u_groupc] =
|
|
strsep(&optarg, ",")) != NULL) {
|
|
if (up->u_groupv[up->u_groupc][0] != 0) {
|
|
up->u_groupc++;
|
|
}
|
|
}
|
|
if (optarg != NULL) {
|
|
warnx("Truncated list of secondary groups "
|
|
"to %d entries", NGROUPS_MAX);
|
|
}
|
|
up->u_flags |= F_SECGROUP;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'S':
|
|
up->u_allow_samba = 1;
|
|
break;
|
|
#endif
|
|
case 'c':
|
|
memsave(&up->u_comment, optarg, strlen(optarg));
|
|
up->u_flags |= F_COMMENT;
|
|
break;
|
|
case 'C':
|
|
if (strcasecmp(optarg, "yes") == 0) {
|
|
up->u_locked = LOCK;
|
|
} else if (strcasecmp(optarg, "no") == 0) {
|
|
up->u_locked = UNLOCK;
|
|
} else {
|
|
/* No idea. */
|
|
errx(EXIT_FAILURE,
|
|
"Please type 'yes' or 'no'");
|
|
}
|
|
break;
|
|
case 'F':
|
|
memsave(&up->u_inactive, "-1", strlen("-1"));
|
|
up->u_flags |= F_INACTIVE;
|
|
break;
|
|
case 'd':
|
|
memsave(&up->u_home, optarg, strlen(optarg));
|
|
up->u_flags |= F_HOMEDIR;
|
|
break;
|
|
case 'e':
|
|
memsave(&up->u_expire, optarg, strlen(optarg));
|
|
up->u_flags |= F_EXPIRE;
|
|
break;
|
|
case 'f':
|
|
memsave(&up->u_inactive, optarg, strlen(optarg));
|
|
up->u_flags |= F_INACTIVE;
|
|
break;
|
|
case 'g':
|
|
memsave(&up->u_primgrp, optarg, strlen(optarg));
|
|
up->u_flags |= F_GROUP;
|
|
break;
|
|
case 'l':
|
|
(void)strlcpy(newuser, optarg, sizeof(newuser));
|
|
have_new_user = 1;
|
|
up->u_flags |= F_USERNAME;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'L':
|
|
memsave(&up->u_class, optarg, strlen(optarg));
|
|
up->u_flags |= F_CLASS;
|
|
break;
|
|
#endif
|
|
case 'm':
|
|
up->u_flags |= F_MKDIR;
|
|
break;
|
|
case 'o':
|
|
up->u_flags |= F_DUPUID;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'p':
|
|
memsave(&up->u_password, optarg, strlen(optarg));
|
|
up->u_flags |= F_PASSWORD;
|
|
break;
|
|
#endif
|
|
case 's':
|
|
memsave(&up->u_shell, optarg, strlen(optarg));
|
|
up->u_flags |= F_SHELL;
|
|
break;
|
|
case 'u':
|
|
up->u_uid = check_numeric(optarg, "uid");
|
|
up->u_flags |= F_UID;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("usermod");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
if ((up->u_flags & F_MKDIR) && !(up->u_flags & F_HOMEDIR) &&
|
|
!(up->u_flags & F_USERNAME)) {
|
|
warnx("Option 'm' useless without 'd' or 'l' -- ignored");
|
|
up->u_flags &= ~F_MKDIR;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("usermod");
|
|
}
|
|
checkeuid();
|
|
openlog("usermod", LOG_PID, LOG_USER);
|
|
return moduser(*argv, (have_new_user) ? newuser : *argv, up,
|
|
up->u_allow_samba) ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define DEL_OPT_EXTENSIONS "Dp:vS"
|
|
#else
|
|
#define DEL_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
int
|
|
userdel(int argc, char **argv)
|
|
{
|
|
struct passwd *pwp;
|
|
def_t def;
|
|
user_t *up = &def.user;
|
|
char password[PasswordLength + 1];
|
|
int defaultfield;
|
|
int rmhome;
|
|
int bigD;
|
|
int c;
|
|
|
|
read_defaults(&def);
|
|
defaultfield = bigD = rmhome = 0;
|
|
while ((c = getopt(argc, argv, "r" DEL_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
#ifdef EXTENSIONS
|
|
case 'D':
|
|
bigD = 1;
|
|
break;
|
|
#endif
|
|
#ifdef EXTENSIONS
|
|
case 'S':
|
|
up->u_allow_samba = 1;
|
|
break;
|
|
#endif
|
|
#ifdef EXTENSIONS
|
|
case 'p':
|
|
defaultfield = 1;
|
|
up->u_preserve = (strcmp(optarg, "true") == 0) ? 1 :
|
|
(strcmp(optarg, "yes") == 0) ? 1 :
|
|
atoi(optarg);
|
|
break;
|
|
#endif
|
|
case 'r':
|
|
rmhome = 1;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("userdel");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
#ifdef EXTENSIONS
|
|
if (bigD) {
|
|
if (defaultfield) {
|
|
checkeuid();
|
|
return setdefaults(up) ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
(void)printf("preserve\t%s\n", (up->u_preserve) ? "true" :
|
|
"false");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
#endif
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("userdel");
|
|
}
|
|
checkeuid();
|
|
if ((pwp = getpwnam(*argv)) == NULL) {
|
|
warnx("No such user `%s'", *argv);
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (rmhome) {
|
|
(void)removehomedir(pwp);
|
|
}
|
|
if (up->u_preserve) {
|
|
up->u_flags |= F_SHELL;
|
|
memsave(&up->u_shell, _PATH_SBIN_NOLOGIN,
|
|
strlen(_PATH_SBIN_NOLOGIN));
|
|
(void)memset(password, '*', DES_Len);
|
|
password[DES_Len] = 0;
|
|
memsave(&up->u_password, password, strlen(password));
|
|
up->u_flags |= F_PASSWORD;
|
|
openlog("userdel", LOG_PID, LOG_USER);
|
|
return moduser(*argv, *argv, up, up->u_allow_samba) ?
|
|
EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
if (!rm_user_from_groups(*argv)) {
|
|
return 0;
|
|
}
|
|
openlog("userdel", LOG_PID, LOG_USER);
|
|
return moduser(*argv, *argv, NULL, up->u_allow_samba) ?
|
|
EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define GROUP_ADD_OPT_EXTENSIONS "r:v"
|
|
#else
|
|
#define GROUP_ADD_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
/* add a group */
|
|
int
|
|
groupadd(int argc, char **argv)
|
|
{
|
|
def_t def;
|
|
group_t *gp = &def.group;
|
|
int dupgid;
|
|
int gid;
|
|
int c;
|
|
|
|
gid = -1;
|
|
dupgid = 0;
|
|
read_defaults(&def);
|
|
while ((c = getopt(argc, argv, "g:o" GROUP_ADD_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
case 'g':
|
|
gid = check_numeric(optarg, "gid");
|
|
break;
|
|
case 'o':
|
|
dupgid = 1;
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'r':
|
|
(void)save_range(&gp->g_r, optarg);
|
|
break;
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("groupadd");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("groupadd");
|
|
}
|
|
if (gp->g_rc == 0) {
|
|
gp->g_rv[gp->g_rc].r_from = DEF_LOWUID;
|
|
gp->g_rv[gp->g_rc].r_to = DEF_HIGHUID;
|
|
gp->g_rc += 1;
|
|
}
|
|
gp->g_defrc = gp->g_rc;
|
|
checkeuid();
|
|
if (gid == -1) {
|
|
int got_id = 0;
|
|
int i;
|
|
|
|
/*
|
|
* Look for a free GID in the command line ranges (if any).
|
|
* These start after the ranges specified in the config file.
|
|
*/
|
|
for (i = gp->g_defrc; !got_id && i < gp->g_rc ; i++) {
|
|
got_id = getnextgid(&gid,
|
|
gp->g_rv[i].r_from, gp->g_rv[i].r_to);
|
|
}
|
|
/*
|
|
* If there were no free GIDs in the command line ranges,
|
|
* try the ranges from the config file (there will always
|
|
* be at least one default).
|
|
*/
|
|
for (i = 0; !got_id && i < gp->g_defrc; i++) {
|
|
got_id = getnextgid(&gid,
|
|
gp->g_rv[i].r_from, gp->g_rv[i].r_to);
|
|
}
|
|
if (!got_id)
|
|
errx(EXIT_FAILURE, "Can't add group: can't get next gid");
|
|
}
|
|
if (!dupgid && getgrgid((gid_t) gid) != NULL) {
|
|
errx(EXIT_FAILURE, "Can't add group: gid %d is a duplicate",
|
|
gid);
|
|
}
|
|
if (!valid_group(*argv)) {
|
|
warnx("Invalid group name `%s'", *argv);
|
|
}
|
|
openlog("groupadd", LOG_PID, LOG_USER);
|
|
if (!creategid(*argv, gid, ""))
|
|
exit(EXIT_FAILURE);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define GROUP_DEL_OPT_EXTENSIONS "v"
|
|
#else
|
|
#define GROUP_DEL_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
/* remove a group */
|
|
int
|
|
groupdel(int argc, char **argv)
|
|
{
|
|
int c;
|
|
|
|
while ((c = getopt(argc, argv, "" GROUP_DEL_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
#ifdef EXTENSIONS
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("groupdel");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("groupdel");
|
|
}
|
|
if (getgrnam(*argv) == NULL) {
|
|
errx(EXIT_FAILURE, "No such group `%s'", *argv);
|
|
}
|
|
checkeuid();
|
|
openlog("groupdel", LOG_PID, LOG_USER);
|
|
if (!modify_gid(*argv, NULL))
|
|
exit(EXIT_FAILURE);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
#define GROUP_MOD_OPT_EXTENSIONS "v"
|
|
#else
|
|
#define GROUP_MOD_OPT_EXTENSIONS
|
|
#endif
|
|
|
|
/* modify a group */
|
|
int
|
|
groupmod(int argc, char **argv)
|
|
{
|
|
struct group *grp;
|
|
char buf[MaxEntryLen];
|
|
char *newname;
|
|
char **cpp;
|
|
int dupgid;
|
|
int gid;
|
|
int cc;
|
|
int c;
|
|
|
|
gid = -1;
|
|
dupgid = 0;
|
|
newname = NULL;
|
|
while ((c = getopt(argc, argv, "g:on:" GROUP_MOD_OPT_EXTENSIONS)) != -1) {
|
|
switch(c) {
|
|
case 'g':
|
|
gid = check_numeric(optarg, "gid");
|
|
break;
|
|
case 'o':
|
|
dupgid = 1;
|
|
break;
|
|
case 'n':
|
|
memsave(&newname, optarg, strlen(optarg));
|
|
break;
|
|
#ifdef EXTENSIONS
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usermgmt_usage("groupmod");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("groupmod");
|
|
}
|
|
checkeuid();
|
|
if (gid < 0 && newname == NULL) {
|
|
errx(EXIT_FAILURE, "Nothing to change");
|
|
}
|
|
if (dupgid && gid < 0) {
|
|
errx(EXIT_FAILURE, "Duplicate which gid?");
|
|
}
|
|
if (!dupgid && getgrgid((gid_t) gid) != NULL) {
|
|
errx(EXIT_FAILURE, "Can't modify group: gid %d is a duplicate",
|
|
gid);
|
|
}
|
|
if ((grp = find_group_info(*argv)) == NULL) {
|
|
errx(EXIT_FAILURE, "Can't find group `%s' to modify", *argv);
|
|
}
|
|
if (!is_local(*argv, _PATH_GROUP)) {
|
|
errx(EXIT_FAILURE, "Group `%s' must be a local group", *argv);
|
|
}
|
|
if (newname != NULL && !valid_group(newname)) {
|
|
warnx("Invalid group name `%s'", newname);
|
|
}
|
|
cc = snprintf(buf, sizeof(buf), "%s:%s:%d:",
|
|
(newname) ? newname : grp->gr_name,
|
|
grp->gr_passwd,
|
|
(gid < 0) ? grp->gr_gid : gid);
|
|
for (cpp = grp->gr_mem ; *cpp && cc < sizeof(buf) ; cpp++) {
|
|
cc += snprintf(&buf[cc], sizeof(buf) - cc, "%s%s", *cpp,
|
|
(cpp[1] == NULL) ? "" : ",");
|
|
}
|
|
cc += snprintf(&buf[cc], sizeof(buf) - cc, "\n");
|
|
if (newname != NULL)
|
|
free(newname);
|
|
openlog("groupmod", LOG_PID, LOG_USER);
|
|
if (!modify_gid(*argv, buf))
|
|
exit(EXIT_FAILURE);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#ifdef EXTENSIONS
|
|
/* display user information */
|
|
int
|
|
userinfo(int argc, char **argv)
|
|
{
|
|
struct passwd *pwp;
|
|
struct group *grp;
|
|
char buf[MaxEntryLen];
|
|
char **cpp;
|
|
int exists;
|
|
int cc;
|
|
int i;
|
|
|
|
exists = 0;
|
|
buf[0] = '\0';
|
|
while ((i = getopt(argc, argv, "e")) != -1) {
|
|
switch(i) {
|
|
case 'e':
|
|
exists = 1;
|
|
break;
|
|
default:
|
|
usermgmt_usage("userinfo");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("userinfo");
|
|
}
|
|
pwp = find_user_info(*argv);
|
|
if (exists) {
|
|
exit((pwp) ? EXIT_SUCCESS : EXIT_FAILURE);
|
|
}
|
|
if (pwp == NULL) {
|
|
errx(EXIT_FAILURE, "Can't find user `%s'", *argv);
|
|
}
|
|
(void)printf("login\t%s\n", pwp->pw_name);
|
|
(void)printf("passwd\t%s\n", pwp->pw_passwd);
|
|
(void)printf("uid\t%d\n", pwp->pw_uid);
|
|
for (cc = 0 ; (grp = getgrent()) != NULL ; ) {
|
|
for (cpp = grp->gr_mem ; *cpp ; cpp++) {
|
|
if (strcmp(*cpp, *argv) == 0 &&
|
|
grp->gr_gid != pwp->pw_gid) {
|
|
cc += snprintf(&buf[cc], sizeof(buf) - cc,
|
|
"%s ", grp->gr_name);
|
|
}
|
|
}
|
|
}
|
|
if ((grp = getgrgid(pwp->pw_gid)) == NULL) {
|
|
(void)printf("groups\t%d %s\n", pwp->pw_gid, buf);
|
|
} else {
|
|
(void)printf("groups\t%s %s\n", grp->gr_name, buf);
|
|
}
|
|
(void)printf("change\t%s", pwp->pw_change > 0 ?
|
|
ctime(&pwp->pw_change) : pwp->pw_change == -1 ?
|
|
"NEXT LOGIN\n" : "NEVER\n");
|
|
(void)printf("class\t%s\n", pwp->pw_class);
|
|
(void)printf("gecos\t%s\n", pwp->pw_gecos);
|
|
(void)printf("dir\t%s\n", pwp->pw_dir);
|
|
(void)printf("shell\t%s\n", pwp->pw_shell);
|
|
(void)printf("expire\t%s", pwp->pw_expire ?
|
|
ctime(&pwp->pw_expire) : "NEVER\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
#endif
|
|
|
|
#ifdef EXTENSIONS
|
|
/* display user information */
|
|
int
|
|
groupinfo(int argc, char **argv)
|
|
{
|
|
struct group *grp;
|
|
char **cpp;
|
|
int exists;
|
|
int i;
|
|
|
|
exists = 0;
|
|
while ((i = getopt(argc, argv, "ev")) != -1) {
|
|
switch(i) {
|
|
case 'e':
|
|
exists = 1;
|
|
break;
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
default:
|
|
usermgmt_usage("groupinfo");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1) {
|
|
usermgmt_usage("groupinfo");
|
|
}
|
|
grp = find_group_info(*argv);
|
|
if (exists) {
|
|
exit((grp) ? EXIT_SUCCESS : EXIT_FAILURE);
|
|
}
|
|
if (grp == NULL) {
|
|
errx(EXIT_FAILURE, "Can't find group `%s'", *argv);
|
|
}
|
|
(void)printf("name\t%s\n", grp->gr_name);
|
|
(void)printf("passwd\t%s\n", grp->gr_passwd);
|
|
(void)printf("gid\t%d\n", grp->gr_gid);
|
|
(void)printf("members\t");
|
|
for (cpp = grp->gr_mem ; *cpp ; cpp++) {
|
|
(void)printf("%s", *cpp);
|
|
if (*(cpp + 1)) {
|
|
(void) printf(", ");
|
|
}
|
|
}
|
|
(void)fputc('\n', stdout);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
#endif
|