mirror of
https://github.com/samba-team/samba.git
synced 2024-12-25 23:21:54 +03:00
ea59632b3a
Signed-off-by: Pavel Kalugin <pkalugin@inno.tech> Reviewed-by: Andreas Schneider <asn@samba.org> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
667 lines
16 KiB
C
667 lines
16 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* Copyright (C) Jeremy Allison 1995-1998
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* Copyright (C) Tim Potter 2001
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, see <http://www.gnu.org/licenses/>. */
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#include "includes.h"
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#include "system/passwd.h"
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#include "secrets.h"
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#include "../librpc/gen_ndr/samr.h"
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#include "../lib/util/util_pw.h"
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#include "libsmb/proto.h"
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#include "passdb.h"
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#include "cmdline_contexts.h"
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#include "passwd_proto.h"
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#include "lib/util/string_wrappers.h"
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#include "lib/param/param.h"
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/*
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* Next two lines needed for SunOS and don't
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* hurt anything else...
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*/
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extern char *optarg;
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extern int optind;
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/* forced running in root-mode */
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static bool got_username = False;
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static bool stdin_passwd_get = False;
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static fstring user_name;
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static char *new_passwd = NULL;
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static const char *remote_machine = NULL;
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static fstring ldap_secret;
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/*********************************************************
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Print command usage on stderr and die.
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**********************************************************/
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static void usage(void)
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{
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printf("When run by root:\n");
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printf(" smbpasswd [options] [username]\n");
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printf("otherwise:\n");
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printf(" smbpasswd [options]\n\n");
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printf("options:\n");
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printf(" -L local mode (must be first option)\n");
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printf(" -h print this usage message\n");
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printf(" -s use stdin for password prompt\n");
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printf(" -c smb.conf file Use the given path to the smb.conf file\n");
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printf(" -D LEVEL debug level\n");
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printf(" -r MACHINE remote machine\n");
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printf(" -U USER remote username (e.g. SAM/user)\n");
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printf("extra options when run by root or in local mode:\n");
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printf(" -a add user\n");
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printf(" -d disable user\n");
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printf(" -e enable user\n");
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printf(" -i interdomain trust account\n");
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printf(" -m machine trust account\n");
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printf(" -n set no password\n");
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printf(" -W use stdin ldap admin password\n");
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printf(" -w PASSWORD ldap admin password\n");
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printf(" -x delete user\n");
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printf(" -R ORDER name resolve order\n");
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exit(1);
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}
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static void set_line_buffering(FILE *f)
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{
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setvbuf(f, NULL, _IOLBF, 0);
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}
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/*******************************************************************
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Process command line options
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******************************************************************/
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static int process_options(int argc, char **argv, int local_flags,
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struct loadparm_context *lp_ctx)
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{
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int ch;
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const char *configfile = get_dyn_CONFIGFILE();
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local_flags |= LOCAL_SET_PASSWORD;
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ZERO_STRUCT(user_name);
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user_name[0] = '\0';
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while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LWS:")) != EOF) {
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switch(ch) {
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case 'L':
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if (getuid() != 0) {
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fprintf(stderr, "smbpasswd -L can only be used by root.\n");
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exit(1);
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}
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local_flags |= LOCAL_AM_ROOT;
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break;
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case 'c':
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configfile = optarg;
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set_dyn_CONFIGFILE(optarg);
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break;
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case 'a':
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local_flags |= LOCAL_ADD_USER;
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break;
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case 'x':
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local_flags |= LOCAL_DELETE_USER;
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local_flags &= ~LOCAL_SET_PASSWORD;
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break;
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case 'd':
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local_flags |= LOCAL_DISABLE_USER;
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local_flags &= ~LOCAL_SET_PASSWORD;
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break;
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case 'e':
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local_flags |= LOCAL_ENABLE_USER;
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local_flags &= ~LOCAL_SET_PASSWORD;
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break;
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case 'm':
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local_flags |= LOCAL_TRUST_ACCOUNT;
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break;
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case 'i':
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local_flags |= LOCAL_INTERDOM_ACCOUNT;
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break;
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case 'j':
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d_printf("See 'net join' for this functionality\n");
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exit(1);
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break;
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case 'n':
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local_flags |= LOCAL_SET_NO_PASSWORD;
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local_flags &= ~LOCAL_SET_PASSWORD;
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SAFE_FREE(new_passwd);
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new_passwd = smb_xstrdup("NO PASSWORD");
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break;
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case 'r':
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remote_machine = optarg;
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break;
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case 's':
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set_line_buffering(stdin);
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set_line_buffering(stdout);
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set_line_buffering(stderr);
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stdin_passwd_get = True;
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break;
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case 'w':
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local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
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fstrcpy(ldap_secret, optarg);
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break;
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case 'R':
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lpcfg_set_cmdline(lp_ctx, "name resolve order", optarg);
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break;
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case 'D':
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lpcfg_set_cmdline(lp_ctx, "log level", optarg);
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break;
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case 'U': {
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got_username = True;
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fstrcpy(user_name, optarg);
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break;
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case 'W':
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local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
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*ldap_secret = '\0';
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break;
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}
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case 'h':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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switch(argc) {
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case 0:
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if (!got_username)
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fstrcpy(user_name, "");
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break;
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case 1:
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if (!(local_flags & LOCAL_AM_ROOT)) {
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usage();
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} else {
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if (got_username) {
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usage();
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} else {
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fstrcpy(user_name, argv[0]);
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}
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}
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break;
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default:
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usage();
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}
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if (!lp_load_global(configfile)) {
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fprintf(stderr, "Can't load %s - run testparm to debug it\n",
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configfile);
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exit(1);
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}
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return local_flags;
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}
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/*************************************************************
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Utility function to prompt for new password.
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*************************************************************/
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static char *prompt_for_new_password(bool stdin_get)
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{
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char *p;
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fstring new_pw;
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ZERO_ARRAY(new_pw);
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p = get_pass("New SMB password:", stdin_get);
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if (p == NULL) {
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return NULL;
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}
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fstrcpy(new_pw, p);
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SAFE_FREE(p);
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p = get_pass("Retype new SMB password:", stdin_get);
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if (p == NULL) {
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return NULL;
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}
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if (strcmp(p, new_pw)) {
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fprintf(stderr, "Mismatch - password unchanged.\n");
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ZERO_ARRAY(new_pw);
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SAFE_FREE(p);
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return NULL;
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}
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return p;
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}
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/*************************************************************
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Change a password either locally or remotely.
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*************************************************************/
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static NTSTATUS password_change(const char *remote_mach,
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const char *domain, const char *username,
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const char *old_passwd, const char *new_pw,
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int local_flags)
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{
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NTSTATUS ret;
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char *err_str = NULL;
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char *msg_str = NULL;
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if (remote_mach != NULL) {
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if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
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LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
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LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
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/* these things can't be done remotely yet */
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fprintf(stderr, "Invalid remote operation!\n");
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return NT_STATUS_UNSUCCESSFUL;
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}
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ret = remote_password_change(remote_mach,
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domain, username,
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old_passwd, new_pw, &err_str);
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} else {
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ret = local_password_change(username, local_flags, new_pw,
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&err_str, &msg_str);
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}
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if (msg_str) {
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printf("%s", msg_str);
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}
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if (err_str) {
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fprintf(stderr, "%s", err_str);
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}
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if (!NT_STATUS_IS_OK(ret) && !err_str) {
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fprintf(stderr, "Failed to change password!\n");
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}
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SAFE_FREE(msg_str);
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SAFE_FREE(err_str);
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return ret;
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}
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/*******************************************************************
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Store the LDAP admin password in secrets.tdb
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******************************************************************/
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static bool store_ldap_admin_pw (char* pw)
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{
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if (!pw)
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return False;
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if (!secrets_init())
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return False;
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return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
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}
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/*************************************************************
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Handle password changing for root.
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*************************************************************/
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static int process_root(int local_flags)
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{
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struct passwd *pwd;
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int result = 0;
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char *old_passwd = NULL;
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if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
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const char *ldap_admin_dn = lp_ldap_admin_dn();
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if ( ! *ldap_admin_dn ) {
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DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
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goto done;
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}
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printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
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if ( ! *ldap_secret ) {
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new_passwd = prompt_for_new_password(stdin_passwd_get);
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if (new_passwd == NULL) {
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fprintf(stderr, "Failed to read new password!\n");
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exit(1);
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}
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fstrcpy(ldap_secret, new_passwd);
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}
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if (!store_ldap_admin_pw(ldap_secret)) {
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DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
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}
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goto done;
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}
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/* Ensure passdb startup(). */
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if(!initialize_password_db(False, NULL)) {
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DEBUG(0, ("Failed to open passdb!\n"));
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exit(1);
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}
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/* Ensure we have a SAM sid. */
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get_global_sam_sid();
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/*
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* Ensure both add/delete user are not set
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* Ensure add/delete user and either remote machine or join domain are
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* not both set.
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*/
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if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
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((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
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(remote_machine != NULL))) {
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usage();
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}
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/* Only load interfaces if we are doing network operations. */
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if (remote_machine) {
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load_interfaces();
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}
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if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
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fstrcpy(user_name, pwd->pw_name);
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TALLOC_FREE(pwd);
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}
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if (!user_name[0]) {
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fprintf(stderr,"You must specify a username\n");
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exit(1);
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}
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if (local_flags & LOCAL_TRUST_ACCOUNT) {
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/* add the $ automatically */
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size_t user_name_len = strlen(user_name);
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if (user_name[user_name_len - 1] == '$') {
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user_name_len--;
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} else {
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if (user_name_len + 2 > sizeof(user_name)) {
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fprintf(stderr, "machine name too long\n");
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exit(1);
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}
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user_name[user_name_len] = '$';
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user_name[user_name_len + 1] = '\0';
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}
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if (local_flags & LOCAL_ADD_USER) {
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SAFE_FREE(new_passwd);
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/*
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* Remove any trailing '$' before we
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* generate the initial machine password.
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*/
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new_passwd = smb_xstrndup(user_name, user_name_len);
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if (!strlower_m(new_passwd)) {
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fprintf(stderr, "strlower_m %s failed\n",
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new_passwd);
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exit(1);
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}
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}
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} else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
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size_t user_name_len = strlen(user_name);
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if (user_name[user_name_len - 1] != '$') {
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if (user_name_len + 2 > sizeof(user_name)) {
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fprintf(stderr, "machine name too long\n");
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exit(1);
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}
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user_name[user_name_len] = '$';
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user_name[user_name_len + 1] = '\0';
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}
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if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
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/*
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* Prompt for trusting domain's account password
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*/
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new_passwd = prompt_for_new_password(stdin_passwd_get);
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if(!new_passwd) {
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fprintf(stderr, "Unable to get newpassword.\n");
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exit(1);
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}
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}
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} else {
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if (remote_machine != NULL) {
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old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
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if(!old_passwd) {
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fprintf(stderr, "Unable to get old password.\n");
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exit(1);
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}
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}
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if (!(local_flags & LOCAL_SET_PASSWORD)) {
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/*
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* If we are trying to enable a user, first we need to find out
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* if they are using a modern version of the smbpasswd file that
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* disables a user by just writing a flag into the file. If so
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* then we can re-enable a user without prompting for a new
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* password. If not (ie. they have a no stored password in the
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* smbpasswd file) then we need to prompt for a new password.
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*/
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if(local_flags & LOCAL_ENABLE_USER) {
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struct samu *sampass = NULL;
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sampass = samu_new( NULL );
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if (!sampass) {
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fprintf(stderr, "talloc fail for struct samu.\n");
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exit(1);
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}
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if (!pdb_getsampwnam(sampass, user_name)) {
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fprintf(stderr, "Failed to find user %s in passdb backend.\n",
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user_name );
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exit(1);
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}
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if(pdb_get_nt_passwd(sampass) == NULL) {
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local_flags |= LOCAL_SET_PASSWORD;
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}
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TALLOC_FREE(sampass);
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}
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}
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if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
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new_passwd = prompt_for_new_password(stdin_passwd_get);
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if(!new_passwd) {
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fprintf(stderr, "Unable to get new password.\n");
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exit(1);
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}
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}
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}
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if (!NT_STATUS_IS_OK(password_change(remote_machine,
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NULL, user_name,
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old_passwd, new_passwd,
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local_flags))) {
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result = 1;
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goto done;
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}
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if(remote_machine) {
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printf("Password changed for user %s on %s.\n", user_name, remote_machine );
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} else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
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struct samu *sampass = NULL;
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sampass = samu_new( NULL );
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if (!sampass) {
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fprintf(stderr, "talloc fail for struct samu.\n");
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exit(1);
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}
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if (!pdb_getsampwnam(sampass, user_name)) {
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fprintf(stderr, "Failed to find user %s in passdb backend.\n",
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user_name );
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exit(1);
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}
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printf("Password changed for user %s.", user_name );
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if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
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printf(" User has disabled flag set.");
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}
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if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
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printf(" User has no password flag set.");
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}
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printf("\n");
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TALLOC_FREE(sampass);
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}
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done:
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SAFE_FREE(old_passwd);
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SAFE_FREE(new_passwd);
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return result;
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}
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/*************************************************************
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Handle password changing for non-root.
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*************************************************************/
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static int process_nonroot(int local_flags)
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{
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struct passwd *pwd = NULL;
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int result = 0;
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char *old_pw = NULL;
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char *new_pw = NULL;
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const char *username = user_name;
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const char *domain = NULL;
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char *p = NULL;
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if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
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/* Extra flags that we can't honor non-root */
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usage();
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}
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|
|
if (!user_name[0]) {
|
|
pwd = getpwuid_alloc(talloc_tos(), getuid());
|
|
if (pwd) {
|
|
fstrcpy(user_name,pwd->pw_name);
|
|
TALLOC_FREE(pwd);
|
|
} else {
|
|
fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Allow domain as part of the username */
|
|
if ((p = strchr_m(user_name, '\\')) ||
|
|
(p = strchr_m(user_name, '/')) ||
|
|
(p = strchr_m(user_name, *lp_winbind_separator()))) {
|
|
*p = '\0';
|
|
username = p + 1;
|
|
domain = user_name;
|
|
}
|
|
|
|
/*
|
|
* A non-root user is always setting a password
|
|
* via a remote machine (even if that machine is
|
|
* localhost).
|
|
*/
|
|
|
|
load_interfaces(); /* Delayed from main() */
|
|
|
|
if (remote_machine != NULL) {
|
|
if (!is_ipaddress(remote_machine)) {
|
|
domain = remote_machine;
|
|
}
|
|
} else {
|
|
remote_machine = "127.0.0.1";
|
|
|
|
/*
|
|
* If we deal with a local user, change the password for the
|
|
* user in our SAM.
|
|
*/
|
|
domain = get_global_sam_name();
|
|
}
|
|
|
|
old_pw = get_pass("Old SMB password:",stdin_passwd_get);
|
|
if (old_pw == NULL) {
|
|
fprintf(stderr, "Unable to get old password.\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (!new_passwd) {
|
|
new_pw = prompt_for_new_password(stdin_passwd_get);
|
|
}
|
|
else
|
|
new_pw = smb_xstrdup(new_passwd);
|
|
|
|
if (!new_pw) {
|
|
fprintf(stderr, "Unable to get new password.\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(password_change(remote_machine,
|
|
domain, username,
|
|
old_pw, new_pw, 0))) {
|
|
result = 1;
|
|
goto done;
|
|
}
|
|
|
|
printf("Password changed for user %s\n", username);
|
|
|
|
done:
|
|
SAFE_FREE(old_pw);
|
|
SAFE_FREE(new_pw);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
/*********************************************************
|
|
Start here.
|
|
**********************************************************/
|
|
int main(int argc, char **argv)
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct loadparm_context *lp_ctx = NULL;
|
|
int local_flags = 0;
|
|
int ret;
|
|
|
|
#if defined(HAVE_SET_AUTH_PARAMETERS)
|
|
set_auth_parameters(argc, argv);
|
|
#endif /* HAVE_SET_AUTH_PARAMETERS */
|
|
|
|
if (getuid() == 0) {
|
|
local_flags = LOCAL_AM_ROOT;
|
|
}
|
|
|
|
smb_init_locale();
|
|
|
|
lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
|
|
if (lp_ctx == NULL) {
|
|
fprintf(stderr,
|
|
"Failed to initialise the global parameter structure.\n");
|
|
return 1;
|
|
}
|
|
|
|
local_flags = process_options(argc, argv, local_flags, lp_ctx);
|
|
|
|
setup_logging("smbpasswd", DEBUG_STDERR);
|
|
|
|
/* Check the effective uid - make sure we are not setuid */
|
|
if (is_setuid_root()) {
|
|
fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (local_flags & LOCAL_AM_ROOT) {
|
|
bool ok;
|
|
|
|
ok = secrets_init();
|
|
if (!ok) {
|
|
return 1;
|
|
}
|
|
ret = process_root(local_flags);
|
|
} else {
|
|
ret = process_nonroot(local_flags);
|
|
}
|
|
TALLOC_FREE(frame);
|
|
return ret;
|
|
}
|