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/*
Samba Unix/Linux SMB client library
Version 3.0
join a realm
Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#ifdef HAVE_ADS
/* a lame random number generator - used /dev/urandom if possible */
static unsigned one_random(void)
{
int fd = -1;
static int initialised;
unsigned ret;
if (!initialised) {
initialised = 1;
fd = open("/dev/urandom", O_RDONLY);
srandom(time(NULL) ^ getpid());
}
if (fd == -1) {
return random();
}
read(fd, &ret, sizeof(ret));
return ret;
}
/*
* Generate a simple random password of 15 chars - not a cryptographic one
*/
static char *generate_random_password(int len)
{
int i;
char *pass;
if (!(pass = malloc(len+1)))
return NULL;
for (i=0; i<len; ) {
char c = one_random() & 0x7f;
if (!isalnum(c) && !ispunct(c)) continue;
pass[i++] = c;
}
return pass;
}
int net_join_usage(void)
{
d_printf("\nnet join"\
"\n\tjoins the local machine to a ADS realm\n");
return -1;
}
int net_join(int argc, const char **argv)
{
char *ldap_host;
char *hostname;
ADS_STRUCT *ads;
int rc;
char *password;
extern pstring global_myname;
NTSTATUS status;
hostname = strdup(global_myname);
strlower(hostname);
if (!*ldap_host) ldap_host = NULL;
if (!secrets_init()) {
DEBUG(1,("Failed to initialise secrets database\n"));
return -1;
}
password = generate_random_password(15);
ads = ads_init(NULL, NULL, NULL);
rc = ads_connect(ads);
if (rc) {
d_printf("ads_connect: %s\n", ads_errstr(rc));
ads_destory(&ads);
return -1;
}
rc = ads_join_realm(ads, hostname);
if (rc) {
d_printf("ads_join_realm: %s\n", ads_errstr(rc));
ads_destory(&ads);
return -1;
}
status = ads_set_machine_password(ads, hostname, password);
if (!NT_STATUS_IS_OK(status)) {
d_printf("ads_set_machine_password: %s\n", get_nt_error_msg(status));
ads_destory(&ads);
return -1;
}
if (!secrets_store_machine_password(password)) {
DEBUG(1,("Failed to save machine password\n"));
ads_destory(&ads);
return -1;
}
d_printf("Joined %s to realm %s\n", hostname, ads->realm);
ads_destory(&ads);
return 0;
}
#else
int net_join_usage(void)
{
d_printf("ADS support not compiled in\n");
return -1;
}
int net_join(int argc, const char **argv)
{
return net_join_usage();
}
#endif
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