Authenticate against a remote domain
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Andrew Bartlett 2001
-
+
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
+ the Free Software Foundation; either version 3 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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "rpc_client/cli_netlogon.h"
+#include "secrets.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
-extern BOOL global_machine_password_needs_changing;
+extern bool global_machine_password_needs_changing;
+static struct named_mutex *mutex;
+
+/*
+ * Change machine password (called from main loop
+ * idle timeout. Must be done as root.
+ */
+
+void attempt_machine_password_change(void)
+{
+ unsigned char trust_passwd_hash[16];
+ time_t lct;
+ void *lock;
+
+ if (!global_machine_password_needs_changing) {
+ return;
+ }
+
+ if (lp_security() != SEC_DOMAIN) {
+ return;
+ }
+
+ /*
+ * We're in domain level security, and the code that
+ * read the machine password flagged that the machine
+ * password needs changing.
+ */
+
+ /*
+ * First, open the machine password file with an exclusive lock.
+ */
+
+ lock = secrets_get_trust_account_lock(NULL, lp_workgroup());
+
+ if (lock == NULL) {
+ DEBUG(0,("attempt_machine_password_change: unable to lock "
+ "the machine account password for machine %s in "
+ "domain %s.\n",
+ global_myname(), lp_workgroup() ));
+ return;
+ }
+
+ if(!secrets_fetch_trust_account_password(lp_workgroup(),
+ trust_passwd_hash, &lct, NULL)) {
+ DEBUG(0,("attempt_machine_password_change: unable to read the "
+ "machine account password for %s in domain %s.\n",
+ global_myname(), lp_workgroup()));
+ TALLOC_FREE(lock);
+ return;
+ }
+
+ /*
+ * Make sure someone else hasn't already done this.
+ */
+
+ if(time(NULL) < lct + lp_machine_password_timeout()) {
+ global_machine_password_needs_changing = false;
+ TALLOC_FREE(lock);
+ return;
+ }
+
+ /* always just contact the PDC here */
+
+ change_trust_account_password( lp_workgroup(), NULL);
+ global_machine_password_needs_changing = false;
+ TALLOC_FREE(lock);
+}
/**
- * Connect to a remote server for domain security authenticaion.
+ * Connect to a remote server for (inter)domain security authenticaion.
*
* @param cli the cli to return containing the active connection
* @param server either a machine name or text IP address to
* connect to.
+ * @param setup_creds_as domain account to setup credentials as
+ * @param sec_chan a switch value to distinguish between domain
+ * member and interdomain authentication
* @param trust_passwd the trust password to establish the
- * credentials with.
+ * credentials with.
*
**/
-static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
- const char *dc_name, struct in_addr dc_ip,
- const char *setup_creds_as,
- uint16 sec_chan,
- const unsigned char *trust_passwd,
- BOOL *retry)
+static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
+ const char *domain,
+ const char *dc_name,
+ struct sockaddr_storage *dc_ss,
+ struct rpc_pipe_client **pipe_ret,
+ bool *retry)
{
NTSTATUS result;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+
+ *cli = NULL;
+
+ *pipe_ret = NULL;
/* TODO: Send a SAMLOGON request to determine whether this is a valid
logonserver. We can avoid a 30-second timeout if the DC is down
* ACCESS_DENIED errors if 2 auths are done from the same machine. JRA.
*/
- if (!grab_server_mutex(dc_name))
+ mutex = grab_named_mutex(NULL, dc_name, 10);
+ if (mutex == NULL) {
return NT_STATUS_NO_LOGON_SERVERS;
-
+ }
+
/* Attempt connection */
*retry = True;
- result = cli_full_connection(cli, global_myname(), dc_name, &dc_ip, 0,
+ result = cli_full_connection(cli, global_myname(), dc_name, dc_ss, 0,
"IPC$", "IPC", "", "", "", 0, Undefined, retry);
if (!NT_STATUS_IS_OK(result)) {
result = NT_STATUS_NO_LOGON_SERVERS;
}
- release_server_mutex();
+ if (*cli) {
+ cli_shutdown(*cli);
+ *cli = NULL;
+ }
+
+ TALLOC_FREE(mutex);
return result;
}
* into account also. This patch from "Bjart Kvarme" <bjart.kvarme@usit.uio.no>.
*/
- if(cli_nt_session_open(*cli, PI_NETLOGON) == False) {
+ /* open the netlogon pipe. */
+ if (lp_client_schannel()) {
+ /* We also setup the creds chain in the open_schannel call. */
+ result = cli_rpc_pipe_open_schannel(
+ *cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
+ DCERPC_AUTH_LEVEL_PRIVACY, domain, &netlogon_pipe);
+ } else {
+ result = cli_rpc_pipe_open_noauth(
+ *cli, &ndr_table_netlogon.syntax_id, &netlogon_pipe);
+ }
+
+ if (!NT_STATUS_IS_OK(result)) {
DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
-machine %s. Error was : %s.\n", dc_name, cli_errstr(*cli)));
- cli_nt_session_close(*cli);
- cli_ulogoff(*cli);
+machine %s. Error was : %s.\n", dc_name, nt_errstr(result)));
cli_shutdown(*cli);
- release_server_mutex();
- return NT_STATUS_NO_LOGON_SERVERS;
+ *cli = NULL;
+ TALLOC_FREE(mutex);
+ return result;
}
- fstr_sprintf((*cli)->mach_acct, "%s$", setup_creds_as);
+ if (!lp_client_schannel()) {
+ /* We need to set up a creds chain on an unauthenticated netlogon pipe. */
+ uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+ enum netr_SchannelType sec_chan_type = 0;
+ unsigned char machine_pwd[16];
+ const char *account_name;
+
+ if (!get_trust_pw_hash(domain, machine_pwd, &account_name,
+ &sec_chan_type))
+ {
+ DEBUG(0, ("connect_to_domain_password_server: could not fetch "
+ "trust account password for domain '%s'\n",
+ domain));
+ cli_shutdown(*cli);
+ *cli = NULL;
+ TALLOC_FREE(mutex);
+ return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ }
- if (!(*cli)->mach_acct) {
- release_server_mutex();
- return NT_STATUS_NO_MEMORY;
+ result = rpccli_netlogon_setup_creds(netlogon_pipe,
+ dc_name, /* server name */
+ domain, /* domain */
+ global_myname(), /* client name */
+ account_name, /* machine account name */
+ machine_pwd,
+ sec_chan_type,
+ &neg_flags);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ cli_shutdown(*cli);
+ *cli = NULL;
+ TALLOC_FREE(mutex);
+ return result;
+ }
}
- result = cli_nt_establish_netlogon(*cli, sec_chan, trust_passwd);
-
- if (!NT_STATUS_IS_OK(result)) {
- DEBUG(0,("connect_to_domain_password_server: unable to setup the NETLOGON credentials to machine \
-%s. Error was : %s.\n", dc_name, nt_errstr(result)));
- cli_nt_session_close(*cli);
- cli_ulogoff(*cli);
+ if(!netlogon_pipe) {
+ DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
+machine %s. Error was : %s.\n", dc_name, cli_errstr(*cli)));
cli_shutdown(*cli);
- release_server_mutex();
- return result;
+ *cli = NULL;
+ TALLOC_FREE(mutex);
+ return NT_STATUS_NO_LOGON_SERVERS;
}
/* We exit here with the mutex *locked*. JRA */
+ *pipe_ret = netlogon_pipe;
+
return NT_STATUS_OK;
}
************************************************************************/
static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
- const auth_usersupplied_info *user_info,
- const char *domain,
- uchar chal[8],
- auth_serversupplied_info **server_info,
- const char *dc_name, struct in_addr dc_ip,
- const char *setup_creds_as,
- uint16 sec_chan,
- unsigned char trust_passwd[16],
- time_t last_change_time)
+ const struct auth_usersupplied_info *user_info,
+ const char *domain,
+ uchar chal[8],
+ struct auth_serversupplied_info **server_info,
+ const char *dc_name,
+ struct sockaddr_storage *dc_ss)
+
{
- NET_USER_INFO_3 info3;
+ struct netr_SamInfo3 *info3 = NULL;
struct cli_state *cli = NULL;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
NTSTATUS nt_status = NT_STATUS_NO_LOGON_SERVERS;
int i;
- BOOL retry = True;
+ bool retry = True;
/*
* At this point, smb_apasswd points to the lanman response to
*/
/* rety loop for robustness */
-
+
for (i = 0; !NT_STATUS_IS_OK(nt_status) && retry && (i < 3); i++) {
- nt_status = connect_to_domain_password_server(&cli, dc_name, dc_ip, setup_creds_as,
- sec_chan, trust_passwd, &retry);
+ nt_status = connect_to_domain_password_server(&cli,
+ domain,
+ dc_name,
+ dc_ss,
+ &netlogon_pipe,
+ &retry);
}
if ( !NT_STATUS_IS_OK(nt_status) ) {
return nt_status;
}
- ZERO_STRUCT(info3);
+ /* store a successful connection */
+
+ saf_store( domain, cli->desthost );
/*
* If this call succeeds, we now have lots of info about the user
* in the info3 structure.
*/
- nt_status = cli_netlogon_sam_network_logon(cli, mem_ctx,
- NULL, user_info->smb_name.str, user_info->domain.str,
- user_info->wksta_name.str, chal, user_info->lm_resp,
- user_info->nt_resp, &info3);
-
- /* let go as soon as possible so we avoid any potential deadlocks
- with winbind lookup up users or groups */
-
- release_server_mutex();
+ nt_status = rpccli_netlogon_sam_network_logon(netlogon_pipe,
+ mem_ctx,
+ user_info->logon_parameters,/* flags such as 'allow workstation logon' */
+ dc_name, /* server name */
+ user_info->client.account_name, /* user name logging on. */
+ user_info->client.domain_name, /* domain name */
+ user_info->workstation_name,/* workstation name */
+ chal, /* 8 byte challenge. */
+ user_info->lm_resp, /* lanman 24 byte response */
+ user_info->nt_resp, /* nt 24 byte response */
+ &info3); /* info3 out */
+
+ /* Let go as soon as possible so we avoid any potential deadlocks
+ with winbind lookup up users or groups. */
+
+ TALLOC_FREE(mutex);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("domain_client_validate: unable to validate password "
"for user %s in domain %s to Domain controller %s. "
- "Error was %s.\n", user_info->smb_name.str,
- user_info->domain.str, cli->srv_name_slash,
+ "Error was %s.\n", user_info->client.account_name,
+ user_info->client.domain_name, dc_name,
nt_errstr(nt_status)));
/* map to something more useful */
nt_status = NT_STATUS_NO_LOGON_SERVERS;
}
} else {
- nt_status = make_server_info_info3(mem_ctx, user_info->internal_username.str,
- user_info->smb_name.str, domain, server_info, &info3);
- netsamlogon_cache_store( mem_ctx, &info3 );
- }
-
-#if 0
- /*
- * We don't actually need to do this - plus it fails currently with
- * NT_STATUS_INVALID_INFO_CLASS - we need to know *exactly* what to
- * send here. JRA.
- */
-
- if (NT_STATUS_IS_OK(status)) {
- if(cli_nt_logoff(&cli, &ctr) == False) {
- DEBUG(0,("domain_client_validate: unable to log off user %s in domain \
-%s to Domain controller %s. Error was %s.\n", user, domain, dc_name, cli_errstr(&cli)));
- nt_status = NT_STATUS_LOGON_FAILURE;
+ nt_status = make_server_info_info3(mem_ctx,
+ user_info->client.account_name,
+ domain,
+ server_info,
+ info3);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ (*server_info)->nss_token |= user_info->was_mapped;
+
+ if ( ! (*server_info)->guest) {
+ /* if a real user check pam account restrictions */
+ /* only really perfomed if "obey pam restriction" is true */
+ nt_status = smb_pam_accountcheck((*server_info)->unix_name);
+ if ( !NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("PAM account restriction prevents user login\n"));
+ cli_shutdown(cli);
+ TALLOC_FREE(info3);
+ return nt_status;
+ }
+ }
}
+
+ netsamlogon_cache_store(user_info->client.account_name, info3);
+ TALLOC_FREE(info3);
}
-#endif /* 0 */
/* Note - once the cli stream is shutdown the mem_ctx used
to allocate the other_sids and gids structures has been deleted - so
these pointers are no longer valid..... */
- cli_nt_session_close(cli);
- cli_ulogoff(cli);
cli_shutdown(cli);
return nt_status;
}
static NTSTATUS check_ntdomain_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
- const auth_usersupplied_info *user_info,
- auth_serversupplied_info **server_info)
+ const struct auth_usersupplied_info *user_info,
+ struct auth_serversupplied_info **server_info)
{
NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
- unsigned char trust_passwd[16];
- time_t last_change_time;
const char *domain = lp_workgroup();
- uint32 sec_channel_type = 0;
fstring dc_name;
- struct in_addr dc_ip;
+ struct sockaddr_storage dc_ss;
if ( lp_server_role() != ROLE_DOMAIN_MEMBER ) {
DEBUG(0,("check_ntdomain_security: Configuration error! Cannot use "
return NT_STATUS_INVALID_PARAMETER;
}
+ DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
+
/*
* Check that the requested domain is not our own machine name.
* If it is, we should never check the PDC here, we use our own local
* password file.
*/
- if(strequal(get_global_sam_name(), user_info->domain.str)) {
+ if(strequal(get_global_sam_name(), user_info->mapped.domain_name)) {
DEBUG(3,("check_ntdomain_security: Requested domain was for this machine.\n"));
return NT_STATUS_NOT_IMPLEMENTED;
}
- /*
- * Get the machine account password for our primary domain
- * No need to become_root() as secrets_init() is done at startup.
- */
-
- if (!secrets_fetch_trust_account_password(domain, trust_passwd, &last_change_time, &sec_channel_type))
- {
- DEBUG(0, ("check_ntdomain_security: could not fetch trust account password for domain '%s'\n", domain));
- return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
- }
-
- /* Test if machine password has expired and needs to be changed */
- if (lp_machine_password_timeout()) {
- if (last_change_time > 0 &&
- time(NULL) > (last_change_time +
- lp_machine_password_timeout())) {
- global_machine_password_needs_changing = True;
- }
- }
-
/* we need our DC to send the net_sam_logon() request to */
- if ( !get_dc_name(domain, NULL, dc_name, &dc_ip) ) {
- DEBUG(5,("check_trustdomain_security: unable to locate a DC for domain %s\n",
- user_info->domain.str));
+ if ( !get_dc_name(domain, NULL, dc_name, &dc_ss) ) {
+ DEBUG(5,("check_ntdomain_security: unable to locate a DC for domain %s\n",
+ user_info->mapped.domain_name));
return NT_STATUS_NO_LOGON_SERVERS;
}
-
- nt_status = domain_client_validate(mem_ctx, user_info, domain,
- (uchar *)auth_context->challenge.data, server_info, dc_name, dc_ip,
- global_myname(), sec_channel_type,trust_passwd, last_change_time);
-
+
+ nt_status = domain_client_validate(mem_ctx,
+ user_info,
+ domain,
+ (uchar *)auth_context->challenge.data,
+ server_info,
+ dc_name,
+ &dc_ss);
+
return nt_status;
}
/* module initialisation */
static NTSTATUS auth_init_ntdomain(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
{
- if (!make_auth_methods(auth_context, auth_method)) {
+ struct auth_methods *result;
+
+ result = TALLOC_ZERO_P(auth_context, struct auth_methods);
+ if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
+ result->name = "ntdomain";
+ result->auth = check_ntdomain_security;
- (*auth_method)->name = "ntdomain";
- (*auth_method)->auth = check_ntdomain_security;
+ *auth_method = result;
return NT_STATUS_OK;
}
static NTSTATUS check_trustdomain_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
- const auth_usersupplied_info *user_info,
- auth_serversupplied_info **server_info)
+ const struct auth_usersupplied_info *user_info,
+ struct auth_serversupplied_info **server_info)
{
NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
unsigned char trust_md4_password[16];
char *trust_password;
- time_t last_change_time;
- DOM_SID sid;
fstring dc_name;
- struct in_addr dc_ip;
+ struct sockaddr_storage dc_ss;
if (!user_info || !server_info || !auth_context) {
DEBUG(1,("check_trustdomain_security: Critical variables not present. Failing.\n"));
return NT_STATUS_INVALID_PARAMETER;
}
+ DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
+
/*
* Check that the requested domain is not our own machine name or domain name.
*/
- if( strequal(get_global_sam_name(), user_info->domain.str)) {
+ if( strequal(get_global_sam_name(), user_info->mapped.domain_name)) {
DEBUG(3,("check_trustdomain_security: Requested domain [%s] was for this machine.\n",
- user_info->domain.str));
+ user_info->mapped.domain_name));
return NT_STATUS_NOT_IMPLEMENTED;
}
/* No point is bothering if this is not a trusted domain.
This return makes "map to guest = bad user" work again.
The logic is that if we know nothing about the domain, that
- user is known to us and does not exist */
-
- if ( !is_trusted_domain( user_info->domain.str ) )
+ user is not known to us and does not exist */
+
+ if ( !is_trusted_domain( user_info->mapped.domain_name ) )
return NT_STATUS_NOT_IMPLEMENTED;
/*
* No need to become_root() as secrets_init() is done at startup.
*/
- if (!secrets_fetch_trusted_domain_password(user_info->domain.str, &trust_password, &sid, &last_change_time))
- {
- DEBUG(0, ("check_trustdomain_security: could not fetch trust account password for domain %s\n", user_info->domain.str));
+ if (!pdb_get_trusteddom_pw(user_info->mapped.domain_name, &trust_password,
+ NULL, NULL)) {
+ DEBUG(0, ("check_trustdomain_security: could not fetch trust "
+ "account password for domain %s\n",
+ user_info->mapped.domain_name));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
#ifdef DEBUG_PASSWORD
- DEBUG(100, ("Trust password for domain %s is %s\n", user_info->domain.str, trust_password));
+ DEBUG(100, ("Trust password for domain %s is %s\n", user_info->mapped.domain_name,
+ trust_password));
#endif
E_md4hash(trust_password, trust_md4_password);
SAFE_FREE(trust_password);
#if 0
/* Test if machine password is expired and need to be changed */
- if (time(NULL) > last_change_time + lp_machine_password_timeout())
+ if (time(NULL) > last_change_time + (time_t)lp_machine_password_timeout())
{
global_machine_password_needs_changing = True;
}
/* use get_dc_name() for consistency even through we know that it will be
a netbios name */
-
- if ( !get_dc_name(user_info->domain.str, NULL, dc_name, &dc_ip) ) {
+
+ if ( !get_dc_name(user_info->mapped.domain_name, NULL, dc_name, &dc_ss) ) {
DEBUG(5,("check_trustdomain_security: unable to locate a DC for domain %s\n",
- user_info->domain.str));
+ user_info->mapped.domain_name));
return NT_STATUS_NO_LOGON_SERVERS;
}
-
- nt_status = domain_client_validate(mem_ctx, user_info, user_info->domain.str,
- (uchar *)auth_context->challenge.data, server_info, dc_name, dc_ip,
- lp_workgroup(), SEC_CHAN_DOMAIN, trust_md4_password, last_change_time);
+
+ nt_status = domain_client_validate(mem_ctx,
+ user_info,
+ user_info->mapped.domain_name,
+ (uchar *)auth_context->challenge.data,
+ server_info,
+ dc_name,
+ &dc_ss);
return nt_status;
}
/* module initialisation */
static NTSTATUS auth_init_trustdomain(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
{
- if (!make_auth_methods(auth_context, auth_method)) {
+ struct auth_methods *result;
+
+ result = TALLOC_ZERO_P(auth_context, struct auth_methods);
+ if (result == NULL) {
return NT_STATUS_NO_MEMORY;
}
+ result->name = "trustdomain";
+ result->auth = check_trustdomain_security;
- (*auth_method)->name = "trustdomain";
- (*auth_method)->auth = check_trustdomain_security;
+ *auth_method = result;
return NT_STATUS_OK;
}
git.samba.org / nivanova / samba-autobuild / .git / blobdiff