e50ff5c7b5
* src/newusers.c: Comment why we use both getgrgid() and gr_locate_gid(). * src/newusers.c: Cast the parsed GID/UID to a gid_t/uid_t. * src/newusers.c: Cast the number of days to a long integer. * src/newusers.c: Use SHADOW_SP_FLAG_UNSET for the initial value of spent.sp_flag. * src/newusers.c: The size argument of fgets is an int, not a size_t.
888 lines
22 KiB
C
888 lines
22 KiB
C
/*
|
|
* Copyright (c) 1990 - 1993, Julianne Frances Haugh
|
|
* Copyright (c) 1996 - 2000, Marek Michałkiewicz
|
|
* Copyright (c) 2000 - 2006, Tomasz Kłoczko
|
|
* Copyright (c) 2007 - 2008, Nicolas François
|
|
* 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. The name of the copyright holders or contributors may not be used to
|
|
* endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT
|
|
* HOLDERS 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.
|
|
*/
|
|
|
|
/*
|
|
* newusers - create users from a batch file
|
|
*
|
|
* newusers creates a collection of entries in /etc/passwd
|
|
* and related files by reading a passwd-format file and
|
|
* adding entries in the related directories.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#ident "$Id$"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <stdio.h>
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
#include <ctype.h>
|
|
#ifdef USE_PAM
|
|
#include "pam_defs.h"
|
|
#endif /* USE_PAM */
|
|
#include "prototypes.h"
|
|
#include "defines.h"
|
|
#include "getdef.h"
|
|
#include "groupio.h"
|
|
#include "nscd.h"
|
|
#include "pwio.h"
|
|
#include "sgroupio.h"
|
|
#include "shadowio.h"
|
|
#include "chkname.h"
|
|
/*
|
|
* Global variables
|
|
*/
|
|
static char *Prog;
|
|
static bool cflg = false;
|
|
static bool rflg = false; /* create a system account */
|
|
static bool sflg = false;
|
|
|
|
static char *crypt_method = NULL;
|
|
static long sha_rounds = 5000;
|
|
|
|
static bool is_shadow;
|
|
#ifdef SHADOWGRP
|
|
static bool is_shadow_grp;
|
|
static bool gshadow_locked = false;
|
|
#endif
|
|
static bool passwd_locked = false;
|
|
static bool group_locked = false;
|
|
static bool shadow_locked = false;
|
|
|
|
#ifdef USE_PAM
|
|
static pam_handle_t *pamh = NULL;
|
|
#endif
|
|
|
|
/* local function prototypes */
|
|
static void usage (void);
|
|
static void fail_exit (int);
|
|
static int add_group (const char *, const char *, gid_t *, gid_t);
|
|
static int get_uid (const char *, uid_t *);
|
|
static int add_user (const char *, uid_t, gid_t);
|
|
static void update_passwd (struct passwd *, const char *);
|
|
static int add_passwd (struct passwd *, const char *);
|
|
static void process_flags (int argc, char **argv);
|
|
static void check_flags (void);
|
|
static void check_perms (void);
|
|
static void open_files (void);
|
|
static void close_files (void);
|
|
|
|
/*
|
|
* usage - display usage message and exit
|
|
*/
|
|
static void usage (void)
|
|
{
|
|
fprintf (stderr, _("Usage: %s [options] [input]\n"
|
|
"\n"
|
|
" -c, --crypt-method the crypt method (one of %s)\n"
|
|
" -r, --system create system accounts\n"
|
|
"%s"
|
|
"\n"),
|
|
Prog,
|
|
#ifndef USE_SHA_CRYPT
|
|
"NONE DES MD5", ""
|
|
#else
|
|
"NONE DES MD5 SHA256 SHA512",
|
|
_(" -s, --sha-rounds number of SHA rounds for the SHA*\n"
|
|
" crypt algorithms\n")
|
|
#endif
|
|
);
|
|
exit (1);
|
|
}
|
|
|
|
/*
|
|
* fail_exit - undo as much as possible
|
|
*/
|
|
static void fail_exit (int code)
|
|
{
|
|
if (shadow_locked) {
|
|
spw_unlock ();
|
|
}
|
|
if (passwd_locked) {
|
|
pw_unlock ();
|
|
}
|
|
if (group_locked) {
|
|
gr_unlock ();
|
|
}
|
|
#ifdef SHADOWGRP
|
|
if (gshadow_locked) {
|
|
sgr_unlock ();
|
|
}
|
|
#endif
|
|
|
|
exit (code);
|
|
}
|
|
|
|
/*
|
|
* add_group - create a new group or add a user to an existing group
|
|
*/
|
|
static int add_group (const char *name, const char *gid, gid_t *ngid, uid_t uid)
|
|
{
|
|
const struct group *grp;
|
|
struct group grent;
|
|
char *members[1];
|
|
#ifdef SHADOWGRP
|
|
const struct sgrp *sg;
|
|
#endif
|
|
|
|
/*
|
|
* Start by seeing if the named group already exists. This will be
|
|
* very easy to deal with if it does.
|
|
*/
|
|
grp = getgrnam (gid);
|
|
if (NULL == grp) {
|
|
grp = gr_locate (gid);
|
|
}
|
|
if (NULL != grp) {
|
|
/* The user will use this ID for her primary group */
|
|
*ngid = grp->gr_gid;
|
|
/* Don't check gshadow */
|
|
return 0;
|
|
}
|
|
|
|
if (isdigit (gid[0])) {
|
|
/*
|
|
* The GID is a number, which means either this is a brand
|
|
* new group, or an existing group.
|
|
*/
|
|
char *endptr;
|
|
unsigned long int i = strtoul (gid, &endptr, 10);
|
|
if ((*endptr != '\0') || (ERANGE == errno)) {
|
|
fprintf (stderr,
|
|
_("%s: group ID `%s' is not valid\n"),
|
|
Prog, gid);
|
|
return -1;
|
|
}
|
|
/* Look in both the system database (getgrgid) and in the
|
|
* internal database (gr_locate_gid), which may contain
|
|
* uncommitted changes */
|
|
if ( (getgrgid ((gid_t) i) != NULL)
|
|
|| (gr_locate_gid ((gid_t) i) != NULL)) {
|
|
/* The user will use this ID for her
|
|
* primary group */
|
|
*ngid = (gid_t) i;
|
|
return 0;
|
|
}
|
|
grent.gr_gid = (gid_t) i;
|
|
} else {
|
|
/* The gid parameter can be "" or a name which is not
|
|
* already the name of an existing group.
|
|
* In both cases, figure out what group ID can be used.
|
|
*/
|
|
if (find_new_gid(rflg, &grent.gr_gid, &uid) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now I have all of the fields required to create the new group.
|
|
*/
|
|
if (('\0' != gid[0]) && (!isdigit (gid[0]))) {
|
|
grent.gr_name = xstrdup (gid);
|
|
} else {
|
|
grent.gr_name = xstrdup (name);
|
|
}
|
|
|
|
/* Check if this is a valid group name */
|
|
if (!is_valid_group_name (grent.gr_name)) {
|
|
fprintf (stderr,
|
|
_("%s: invalid group name `%s'\n"),
|
|
Prog, grent.gr_name);
|
|
free (grent.gr_name);
|
|
return -1;
|
|
}
|
|
|
|
grent.gr_passwd = "x"; /* XXX warning: const */
|
|
members[0] = NULL;
|
|
grent.gr_mem = members;
|
|
|
|
*ngid = grent.gr_gid;
|
|
|
|
#ifdef SHADOWGRP
|
|
if (is_shadow_grp) {
|
|
sg = sgr_locate (grent.gr_name);
|
|
|
|
if (NULL != sg) {
|
|
fprintf (stderr,
|
|
_("%s: group %s is a shadow group, but does not exist in /etc/group\n"),
|
|
Prog, grent.gr_name);
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (gr_update (&grent) == 0) {
|
|
return -1;
|
|
}
|
|
|
|
#ifdef SHADOWGRP
|
|
if (is_shadow_grp) {
|
|
struct sgrp sgrent;
|
|
char *admins[1];
|
|
sgrent.sg_name = grent.gr_name;
|
|
sgrent.sg_passwd = "*"; /* XXX warning: const */
|
|
admins[0] = NULL;
|
|
sgrent.sg_adm = admins;
|
|
sgrent.sg_mem = members;
|
|
|
|
if (sgr_update (&sgrent) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: group %s created, failure during the creation of the corresponding gshadow group\n"),
|
|
Prog, grent.gr_name);
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_uid (const char *uid, uid_t *nuid) {
|
|
const struct passwd *pwd = NULL;
|
|
|
|
/*
|
|
* The first guess for the UID is either the numerical UID that the
|
|
* caller provided, or the next available UID.
|
|
*/
|
|
if (isdigit (uid[0])) {
|
|
char *endptr;
|
|
unsigned long int i = strtoul (uid, &endptr, 10);
|
|
if (('\0' != *endptr) || (ERANGE == errno)) {
|
|
fprintf (stderr,
|
|
_("%s: user ID `%s' is not valid\n"),
|
|
Prog, uid);
|
|
return -1;
|
|
}
|
|
*nuid = (uid_t) i;
|
|
} else {
|
|
if ('\0' != uid[0]) {
|
|
/* local, no need for xgetpwnam */
|
|
pwd = getpwnam (uid);
|
|
if (NULL == pwd) {
|
|
pwd = pw_locate (uid);
|
|
}
|
|
|
|
if (NULL != pwd) {
|
|
*nuid = pwd->pw_uid;
|
|
} else {
|
|
fprintf (stderr,
|
|
_("%s: user `%s' does not exist\n"),
|
|
Prog, uid);
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (find_new_uid (rflg, nuid, NULL) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* add_user - create a new user ID
|
|
*/
|
|
static int add_user (const char *name, uid_t uid, gid_t gid)
|
|
{
|
|
struct passwd pwent;
|
|
|
|
/* Check if this is a valid user name */
|
|
if (!is_valid_user_name (name)) {
|
|
fprintf (stderr,
|
|
_("%s: invalid user name `%s'\n"),
|
|
Prog, name);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* I don't want to fill in the entire password structure members
|
|
* JUST YET, since there is still more data to be added. So, I fill
|
|
* in the parts that I have.
|
|
*/
|
|
pwent.pw_name = xstrdup (name);
|
|
pwent.pw_uid = uid;
|
|
pwent.pw_passwd = "x"; /* XXX warning: const */
|
|
pwent.pw_gid = gid;
|
|
pwent.pw_gecos = ""; /* XXX warning: const */
|
|
pwent.pw_dir = ""; /* XXX warning: const */
|
|
pwent.pw_shell = ""; /* XXX warning: const */
|
|
|
|
return (pw_update (&pwent) == 0);
|
|
}
|
|
|
|
static void update_passwd (struct passwd *pwd, const char *password)
|
|
{
|
|
void *crypt_arg = NULL;
|
|
if (crypt_method != NULL) {
|
|
if (sflg) {
|
|
crypt_arg = &sha_rounds;
|
|
}
|
|
}
|
|
|
|
if ((crypt_method != NULL) && (0 == strcmp(crypt_method, "NONE"))) {
|
|
pwd->pw_passwd = (char *)password;
|
|
} else {
|
|
pwd->pw_passwd = pw_encrypt (password,
|
|
crypt_make_salt (crypt_method,
|
|
crypt_arg));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* add_passwd - add or update the encrypted password
|
|
*/
|
|
static int add_passwd (struct passwd *pwd, const char *password)
|
|
{
|
|
const struct spwd *sp;
|
|
struct spwd spent;
|
|
void *crypt_arg = NULL;
|
|
if (crypt_method != NULL) {
|
|
if (sflg) {
|
|
crypt_arg = &sha_rounds;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* In the case of regular password files, this is real easy - pwd
|
|
* points to the entry in the password file. Shadow files are
|
|
* harder since there are zillions of things to do ...
|
|
*/
|
|
if (!is_shadow) {
|
|
update_passwd (pwd, password);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Do the first and easiest shadow file case. The user already
|
|
* exists in the shadow password file.
|
|
*/
|
|
sp = spw_locate (pwd->pw_name);
|
|
if (NULL != sp) {
|
|
spent = *sp;
|
|
if ( (NULL != crypt_method)
|
|
&& (0 == strcmp(crypt_method, "NONE"))) {
|
|
spent.sp_pwdp = (char *)password;
|
|
} else {
|
|
const char *salt = crypt_make_salt (crypt_method,
|
|
crypt_arg);
|
|
spent.sp_pwdp = pw_encrypt (password, salt);
|
|
}
|
|
return (spw_update (&spent) == 0);
|
|
}
|
|
|
|
/*
|
|
* Pick the next easiest case - the user has an encrypted password
|
|
* which isn't equal to "x". The password was set to "x" earlier
|
|
* when the entry was created, so this user would have to have had
|
|
* the password set someplace else.
|
|
*/
|
|
if (strcmp (pwd->pw_passwd, "x") != 0) {
|
|
update_passwd (pwd, password);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Now the really hard case - I need to create an entirely new
|
|
* shadow password file entry.
|
|
*/
|
|
spent.sp_namp = pwd->pw_name;
|
|
if ((crypt_method != NULL) && (0 == strcmp(crypt_method, "NONE"))) {
|
|
spent.sp_pwdp = (char *)password;
|
|
} else {
|
|
const char *salt = crypt_make_salt (crypt_method, crypt_arg);
|
|
spent.sp_pwdp = pw_encrypt (password, salt);
|
|
}
|
|
spent.sp_lstchg = (long) time ((time_t *) 0) / SCALE;
|
|
spent.sp_min = getdef_num ("PASS_MIN_DAYS", 0);
|
|
/* 10000 is infinity this week */
|
|
spent.sp_max = getdef_num ("PASS_MAX_DAYS", 10000);
|
|
spent.sp_warn = getdef_num ("PASS_WARN_AGE", -1);
|
|
spent.sp_inact = -1;
|
|
spent.sp_expire = -1;
|
|
spent.sp_flag = SHADOW_SP_FLAG_UNSET;
|
|
|
|
return (spw_update (&spent) == 0);
|
|
}
|
|
|
|
/*
|
|
* process_flags - parse the command line options
|
|
*
|
|
* It will not return if an error is encountered.
|
|
*/
|
|
static void process_flags (int argc, char **argv)
|
|
{
|
|
int option_index = 0;
|
|
int c;
|
|
static struct option long_options[] = {
|
|
{"crypt-method", required_argument, NULL, 'c'},
|
|
{"help", no_argument, NULL, 'h'},
|
|
#ifdef USE_SHA_CRYPT
|
|
{"sha-rounds", required_argument, NULL, 's'},
|
|
#endif
|
|
{"system", no_argument, NULL, 'r'},
|
|
{NULL, 0, NULL, '\0'}
|
|
};
|
|
|
|
while ((c = getopt_long (argc, argv,
|
|
#ifdef USE_SHA_CRYPT
|
|
"c:hrs:",
|
|
#else
|
|
"c:hr",
|
|
#endif
|
|
long_options, &option_index)) != -1) {
|
|
switch (c) {
|
|
case 'c':
|
|
cflg = true;
|
|
crypt_method = optarg;
|
|
break;
|
|
case 'h':
|
|
usage ();
|
|
break;
|
|
case 'r':
|
|
rflg = true;
|
|
break;
|
|
#ifdef USE_SHA_CRYPT
|
|
case 's':
|
|
sflg = true;
|
|
if (!getlong(optarg, &sha_rounds)) {
|
|
fprintf (stderr,
|
|
_("%s: invalid numeric argument '%s'\n"),
|
|
Prog, optarg);
|
|
usage ();
|
|
}
|
|
break;
|
|
#endif
|
|
case 0:
|
|
/* long option */
|
|
break;
|
|
default:
|
|
usage ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (argv[optind] != NULL) {
|
|
if (freopen (argv[optind], "r", stdin) == NULL) {
|
|
char buf[BUFSIZ];
|
|
snprintf (buf, sizeof buf, "%s: %s", Prog, argv[1]);
|
|
perror (buf);
|
|
fail_exit (1);
|
|
}
|
|
}
|
|
|
|
/* validate options */
|
|
check_flags ();
|
|
}
|
|
|
|
/*
|
|
* check_flags - check flags and parameters consistency
|
|
*
|
|
* It will not return if an error is encountered.
|
|
*/
|
|
static void check_flags (void)
|
|
{
|
|
if (sflg && !cflg) {
|
|
fprintf (stderr,
|
|
_("%s: %s flag is ONLY allowed with the %s flag\n"),
|
|
Prog, "-s", "-c");
|
|
usage ();
|
|
}
|
|
|
|
if (cflg) {
|
|
if ( (0 != strcmp (crypt_method, "DES"))
|
|
&& (0 != strcmp (crypt_method, "MD5"))
|
|
&& (0 != strcmp (crypt_method, "NONE"))
|
|
#ifdef USE_SHA_CRYPT
|
|
&& (0 != strcmp (crypt_method, "SHA256"))
|
|
&& (0 != strcmp (crypt_method, "SHA512"))
|
|
#endif
|
|
) {
|
|
fprintf (stderr,
|
|
_("%s: unsupported crypt method: %s\n"),
|
|
Prog, crypt_method);
|
|
usage ();
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* check_perms - check if the caller is allowed to add a group
|
|
*
|
|
* With PAM support, the setuid bit can be set on groupadd to allow
|
|
* non-root users to groups.
|
|
* Without PAM support, only users who can write in the group databases
|
|
* can add groups.
|
|
*
|
|
* It will not return if the user is not allowed.
|
|
*/
|
|
static void check_perms (void)
|
|
{
|
|
#ifdef USE_PAM
|
|
int retval = PAM_SUCCESS;
|
|
struct passwd *pampw;
|
|
|
|
pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
|
|
if (pampw == NULL) {
|
|
retval = PAM_USER_UNKNOWN;
|
|
}
|
|
|
|
if (retval == PAM_SUCCESS) {
|
|
retval = pam_start ("newusers", pampw->pw_name, &conv, &pamh);
|
|
}
|
|
|
|
if (retval == PAM_SUCCESS) {
|
|
retval = pam_authenticate (pamh, 0);
|
|
if (retval != PAM_SUCCESS) {
|
|
(void) pam_end (pamh, retval);
|
|
}
|
|
}
|
|
|
|
if (retval == PAM_SUCCESS) {
|
|
retval = pam_acct_mgmt (pamh, 0);
|
|
if (retval != PAM_SUCCESS) {
|
|
(void) pam_end (pamh, retval);
|
|
}
|
|
}
|
|
|
|
if (retval != PAM_SUCCESS) {
|
|
fprintf (stderr, _("%s: PAM authentication failed\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
#endif /* USE_PAM */
|
|
}
|
|
|
|
/*
|
|
* open_files - lock and open the password, group and shadow databases
|
|
*/
|
|
static void open_files (void)
|
|
{
|
|
/*
|
|
* Lock the password files and open them for update. This will bring
|
|
* all of the entries into memory where they may be searched for an
|
|
* modified, or new entries added. The password file is the key - if
|
|
* it gets locked, assume the others can be locked right away.
|
|
*/
|
|
if (pw_lock () == 0) {
|
|
fprintf (stderr, _("%s: can't lock /etc/passwd.\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
passwd_locked = true;
|
|
if (is_shadow && (spw_lock () == 0)) {
|
|
fprintf (stderr, _("%s: can't lock /etc/shadow.\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
shadow_locked = true;
|
|
if (gr_lock () == 0) {
|
|
fprintf (stderr, _("%s: can't lock /etc/group.\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
group_locked = true;
|
|
#ifdef SHADOWGRP
|
|
if (is_shadow_grp && (sgr_lock () == 0)) {
|
|
fprintf (stderr, _("%s: can't lock /etc/gshadow.\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
gshadow_locked = true;
|
|
#endif
|
|
|
|
if ( (pw_open (O_RDWR) == 0)
|
|
|| (is_shadow && (spw_open (O_RDWR) == 0))
|
|
|| (gr_open (O_RDWR) == 0)
|
|
#ifdef SHADOWGRP
|
|
|| (is_shadow_grp && (sgr_open(O_RDWR) == 0))
|
|
#endif
|
|
) {
|
|
fprintf (stderr, _("%s: can't open files\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* close_files - close and unlock the password, group and shadow databases
|
|
*/
|
|
static void close_files (void)
|
|
{
|
|
if ( (pw_close () == 0)
|
|
|| (is_shadow && (spw_close () == 0))
|
|
|| (gr_close () == 0)
|
|
#ifdef SHADOWGRP
|
|
|| (is_shadow_grp && (sgr_close() == 0))
|
|
#endif
|
|
) {
|
|
fprintf (stderr, _("%s: error updating files\n"), Prog);
|
|
fail_exit (1);
|
|
}
|
|
#ifdef SHADOWGRP
|
|
if (is_shadow_grp) {
|
|
sgr_unlock();
|
|
gshadow_locked = false;
|
|
}
|
|
#endif
|
|
gr_unlock ();
|
|
group_locked = false;
|
|
if (is_shadow) {
|
|
spw_unlock ();
|
|
shadow_locked = false;
|
|
}
|
|
pw_unlock ();
|
|
passwd_locked = false;
|
|
}
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
char buf[BUFSIZ];
|
|
char *fields[8];
|
|
int nfields;
|
|
char *cp;
|
|
const struct passwd *pw;
|
|
struct passwd newpw;
|
|
int errors = 0;
|
|
int line = 0;
|
|
uid_t uid;
|
|
gid_t gid;
|
|
|
|
Prog = Basename (argv[0]);
|
|
|
|
(void) setlocale (LC_ALL, "");
|
|
(void) bindtextdomain (PACKAGE, LOCALEDIR);
|
|
(void) textdomain (PACKAGE);
|
|
|
|
process_flags (argc, argv);
|
|
|
|
check_perms ();
|
|
|
|
is_shadow = spw_file_present ();
|
|
|
|
#ifdef SHADOWGRP
|
|
is_shadow_grp = sgr_file_present ();
|
|
#endif
|
|
|
|
open_files ();
|
|
|
|
/*
|
|
* Read each line. The line has the same format as a password file
|
|
* entry, except that certain fields are not constrained to be
|
|
* numerical values. If a group ID is entered which does not already
|
|
* exist, an attempt is made to allocate the same group ID as the
|
|
* numerical user ID. Should that fail, the next available group ID
|
|
* over 100 is allocated. The pw_gid field will be updated with that
|
|
* value.
|
|
*/
|
|
while (fgets (buf, (int) sizeof buf, stdin) != (char *) 0) {
|
|
line++;
|
|
cp = strrchr (buf, '\n');
|
|
if (NULL != cp) {
|
|
*cp = '\0';
|
|
} else {
|
|
fprintf (stderr, _("%s: line %d: line too long\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Break the string into fields and screw around with them.
|
|
* There MUST be 7 colon separated fields, although the
|
|
* values aren't that particular.
|
|
*/
|
|
for (cp = buf, nfields = 0; nfields < 7; nfields++) {
|
|
fields[nfields] = cp;
|
|
cp = strchr (cp, ':');
|
|
if (NULL != cp) {
|
|
*cp = '\0';
|
|
cp++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (nfields != 6) {
|
|
fprintf (stderr, _("%s: line %d: invalid line\n"),
|
|
Prog, line);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* First check if we have to create of update an user
|
|
*/
|
|
pw = pw_locate (fields[0]);
|
|
/* local, no need for xgetpwnam */
|
|
if ( (NULL == pw)
|
|
&& (getpwnam (fields[0]) != NULL)) {
|
|
fprintf (stderr, _("%s: cannot update the entry of user %s (not in the passwd database)\n"), Prog, fields[0]);
|
|
errors++;
|
|
continue;
|
|
}
|
|
|
|
if ( (NULL == pw)
|
|
&& (get_uid (fields[2], &uid) != 0)) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: can't create user\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Processed is the group name. A new group will be
|
|
* created if the group name is non-numeric and does not
|
|
* already exist. If the group name is a number (which is not
|
|
* an existing GID), a group with the same name as the user
|
|
* will be created, with the given GID. The given or created
|
|
* group will be the primary group of the user. If
|
|
* there is no named group to be a member of, the UID will
|
|
* be figured out and that value will be a candidate for a
|
|
* new group, if that group ID exists, a whole new group ID
|
|
* will be made up.
|
|
*/
|
|
if ( (NULL == pw)
|
|
&& (add_group (fields[0], fields[3], &gid, uid) != 0)) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: can't create group\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Now we work on the user ID. It has to be specified either
|
|
* as a numerical value, or left blank. If it is a numerical
|
|
* value, that value will be used, otherwise the next
|
|
* available user ID is computed and used. After this there
|
|
* will at least be a (struct passwd) for the user.
|
|
*/
|
|
if ( (NULL == pw)
|
|
&& (add_user (fields[0], uid, gid) != 0)) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: can't create user\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* The password, gecos field, directory, and shell fields
|
|
* all come next.
|
|
*/
|
|
pw = pw_locate (fields[0]);
|
|
if (NULL == pw) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: cannot find user %s\n"),
|
|
Prog, line, fields[0]);
|
|
errors++;
|
|
continue;
|
|
}
|
|
newpw = *pw;
|
|
|
|
if (add_passwd (&newpw, fields[1])) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: can't update password\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
if ('\0' != fields[4][0]) {
|
|
newpw.pw_gecos = fields[4];
|
|
}
|
|
|
|
if ('\0' != fields[5][0]) {
|
|
newpw.pw_dir = fields[5];
|
|
}
|
|
|
|
if ('\0' != fields[6][0]) {
|
|
newpw.pw_shell = fields[6];
|
|
}
|
|
|
|
if ( ('\0' != newpw.pw_dir[0])
|
|
&& (access (newpw.pw_dir, F_OK) != 0)) {
|
|
mode_t msk = 0777 & ~getdef_num ("UMASK",
|
|
GETDEF_DEFAULT_UMASK);
|
|
if (mkdir (newpw.pw_dir, msk) != 0) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: mkdir failed\n"), Prog,
|
|
line);
|
|
} else if (chown (newpw.pw_dir,
|
|
newpw.pw_uid,
|
|
newpw.pw_gid) != 0) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: chown failed\n"), Prog,
|
|
line);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update the password entry with the new changes made.
|
|
*/
|
|
if (pw_update (&newpw) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: line %d: can't update entry\n"),
|
|
Prog, line);
|
|
errors++;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Any detected errors will cause the entire set of changes to be
|
|
* aborted. Unlocking the password file will cause all of the
|
|
* changes to be ignored. Otherwise the file is closed, causing the
|
|
* changes to be written out all at once, and then unlocked
|
|
* afterwards.
|
|
*/
|
|
if (0 != errors) {
|
|
fprintf (stderr,
|
|
_("%s: error detected, changes ignored\n"), Prog);
|
|
gr_unlock ();
|
|
if (is_shadow) {
|
|
spw_unlock ();
|
|
}
|
|
pw_unlock ();
|
|
fail_exit (1);
|
|
}
|
|
|
|
close_files ();
|
|
|
|
nscd_flush_cache ("passwd");
|
|
nscd_flush_cache ("group");
|
|
|
|
#ifdef USE_PAM
|
|
(void) pam_end (pamh, PAM_SUCCESS);
|
|
#endif /* USE_PAM */
|
|
|
|
return 0;
|
|
}
|
|
|