#include "includes.h"
-BOOL global_machine_password_needs_changing = False;
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+extern BOOL global_machine_password_needs_changing;
-extern pstring global_myname;
extern userdom_struct current_user_info;
+
+/*
+ resolve the name of a DC in ways appropriate for an ADS domain mode
+ an ADS domain may not have Netbios enabled at all, so this is
+ quite different from the RPC case
+ Note that we ignore the 'server' parameter here. That has the effect of using
+ the 'ADS server' smb.conf parameter, which is what we really want anyway
+ */
+static NTSTATUS ads_resolve_dc(fstring remote_machine,
+ struct in_addr *dest_ip)
+{
+ ADS_STRUCT *ads;
+ ads = ads_init_simple();
+ if (!ads) {
+ return NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ DEBUG(4,("ads_resolve_dc: realm=%s\n", ads->config.realm));
+
+ ads->auth.flags |= ADS_AUTH_NO_BIND;
+
+#ifdef HAVE_ADS
+ /* a full ads_connect() is actually overkill, as we don't srictly need
+ to do the SASL auth in order to get the info we need, but libads
+ doesn't offer a better way right now */
+ ads_connect(ads);
+#endif
+
+ fstrcpy(remote_machine, ads->config.ldap_server_name);
+ strupper(remote_machine);
+ *dest_ip = ads->ldap_ip;
+ ads_destroy(&ads);
+
+ if (!*remote_machine || is_zero_ip(*dest_ip)) {
+ return NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ DEBUG(4,("ads_resolve_dc: using server='%s' IP=%s\n",
+ remote_machine, inet_ntoa(*dest_ip)));
+
+ return NT_STATUS_OK;
+}
+
+/*
+ resolve the name of a DC in ways appropriate for RPC domain mode
+ this relies on the server supporting netbios and port 137 not being
+ firewalled
+ */
+static NTSTATUS rpc_resolve_dc(const char *server,
+ fstring remote_machine,
+ struct in_addr *dest_ip)
+{
+ if (is_ipaddress(server)) {
+ struct in_addr to_ip = *interpret_addr2(server);
+
+ /* we need to know the machines netbios name - this is a lousy
+ way to find it, but until we have a RPC call that does this
+ it will have to do */
+ if (!name_status_find("*", 0x20, 0x20, to_ip, remote_machine)) {
+ DEBUG(2, ("rpc_resolve_dc: Can't resolve name for IP %s\n", server));
+ return NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ *dest_ip = to_ip;
+ return NT_STATUS_OK;
+ }
+
+ fstrcpy(remote_machine, server);
+ strupper(remote_machine);
+ if (!resolve_name(remote_machine, dest_ip, 0x20)) {
+ DEBUG(1,("rpc_resolve_dc: Can't resolve address for %s\n",
+ remote_machine));
+ return NT_STATUS_NO_LOGON_SERVERS;
+ }
+
+ DEBUG(4,("rpc_resolve_dc: using server='%s' IP=%s\n",
+ remote_machine, inet_ntoa(*dest_ip)));
+
+ return NT_STATUS_OK;
+}
+
/**
* Connect to a remote server for 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 trust_password the trust password to establish the
+ * @param trust_passwd the trust password to establish the
* credentials with.
*
**/
static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
- char *server, unsigned char *trust_passwd)
+ const char *server,
+ const char *setup_creds_as,
+ uint16 sec_chan,
+ const unsigned char *trust_passwd,
+ BOOL *retry)
{
struct in_addr dest_ip;
fstring remote_machine;
NTSTATUS result;
+ uint32 neg_flags = 0x000001ff;
- if (is_ipaddress(server)) {
- struct in_addr to_ip;
-
- /* we shouldn't have 255.255.255.255 forthe IP address of
- a password server anyways */
- if ((to_ip.s_addr=inet_addr(server)) == 0xFFFFFFFF) {
- DEBUG (0,("connect_to_domain_password_server: inet_addr(%s) returned 0xFFFFFFFF!\n", server));
- return NT_STATUS_UNSUCCESSFUL;
- }
+ *retry = False;
- if (!name_status_find("*", 0x20, 0x20, to_ip, remote_machine)) {
- DEBUG(0, ("connect_to_domain_password_server: Can't "
- "resolve name for IP %s\n", server));
- return NT_STATUS_UNSUCCESSFUL;
- }
- } else {
- fstrcpy(remote_machine, server);
- }
-
- standard_sub_basic(current_user_info.smb_name, remote_machine);
- strupper(remote_machine);
+ if (lp_security() == SEC_ADS)
+ result = ads_resolve_dc(remote_machine, &dest_ip);
+ else
+ result = rpc_resolve_dc(server, remote_machine, &dest_ip);
- if(!resolve_name( remote_machine, &dest_ip, 0x20)) {
- DEBUG(1,("connect_to_domain_password_server: Can't resolve address for %s\n", remote_machine));
- return NT_STATUS_UNSUCCESSFUL;
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(2,("connect_to_domain_password_server: unable to resolve DC: %s\n",
+ nt_errstr(result)));
+ return result;
}
-
+
if (ismyip(dest_ip)) {
DEBUG(1,("connect_to_domain_password_server: Password server loop - not using password server %s\n",
remote_machine));
- return NT_STATUS_UNSUCCESSFUL;
+ return NT_STATUS_NO_LOGON_SERVERS;
}
/* 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
if the SAMLOGON request fails as it is only over UDP. */
- /* we use a mutex to prevent two connections at once - when a NT PDC gets
- two connections where one hasn't completed a negprot yet it will send a
- TCP reset to the first connection (tridge) */
- if (!message_named_mutex(server)) {
- DEBUG(1,("domain mutex failed for %s\n", server));
- return NT_STATUS_UNSUCCESSFUL;
- }
+ /* we use a mutex to prevent two connections at once - when a
+ Win2k PDC get two connections where one hasn't completed a
+ session setup yet it will send a TCP reset to the first
+ connection (tridge) */
+
+ /*
+ * With NT4.x DC's *all* authentication must be serialized to avoid
+ * ACCESS_DENIED errors if 2 auths are done from the same machine. JRA.
+ */
+
+ *retry = True;
+
+ if (!grab_server_mutex(server))
+ return NT_STATUS_NO_LOGON_SERVERS;
/* Attempt connection */
- result = cli_full_connection(cli, global_myname, server,
- &dest_ip, 0, "IPC$", "IPC", "", "", "", 0);
+ result = cli_full_connection(cli, global_myname(), remote_machine,
+ &dest_ip, 0, "IPC$", "IPC", "", "", "",0, retry);
- message_named_mutex_release(server);
-
if (!NT_STATUS_IS_OK(result)) {
+ release_server_mutex();
return result;
}
* into account also. This patch from "Bjart Kvarme" <bjart.kvarme@usit.uio.no>.
*/
- if(cli_nt_session_open(*cli, PIPE_NETLOGON) == False) {
+ if(cli_nt_session_open(*cli, PI_NETLOGON) == False) {
DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
machine %s. Error was : %s.\n", remote_machine, cli_errstr(*cli)));
cli_nt_session_close(*cli);
cli_ulogoff(*cli);
cli_shutdown(*cli);
- return NT_STATUS_UNSUCCESSFUL;
+ release_server_mutex();
+ return NT_STATUS_NO_LOGON_SERVERS;
}
- result = new_cli_nt_setup_creds(*cli, trust_passwd);
+ snprintf((*cli)->mach_acct, sizeof((*cli)->mach_acct) - 1, "%s$", setup_creds_as);
+
+ if (!(*cli)->mach_acct) {
+ release_server_mutex();
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ result = cli_nt_setup_creds(*cli, sec_chan, trust_passwd, &neg_flags, 2);
if (!NT_STATUS_IS_OK(result)) {
- DEBUG(0,("connect_to_domain_password_server: unable to setup the PDC credentials to machine \
-%s. Error was : %s.\n", remote_machine, get_nt_error_msg(result)));
+ DEBUG(0,("connect_to_domain_password_server: unable to setup the NETLOGON credentials to machine \
+%s. Error was : %s.\n", remote_machine, nt_errstr(result)));
cli_nt_session_close(*cli);
cli_ulogoff(*cli);
cli_shutdown(*cli);
+ release_server_mutex();
return result;
}
+ /* We exit here with the mutex *locked*. JRA */
+
return NT_STATUS_OK;
}
static NTSTATUS attempt_connect_to_dc(struct cli_state **cli,
const char *domain,
struct in_addr *ip,
- unsigned char *trust_passwd)
+ const char *setup_creds_as,
+ uint16 sec_chan,
+ const unsigned char *trust_passwd)
{
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+ BOOL retry = True;
fstring dc_name;
+ int i;
/*
* Ignore addresses we have already tried.
*/
if (is_zero_ip(*ip))
- return NT_STATUS_UNSUCCESSFUL;
+ return NT_STATUS_NO_LOGON_SERVERS;
- if (!lookup_dc_name(global_myname, domain, ip, dc_name))
- return NT_STATUS_UNSUCCESSFUL;
+ if (!lookup_dc_name(global_myname(), domain, ip, dc_name))
+ return NT_STATUS_NO_LOGON_SERVERS;
- return connect_to_domain_password_server(cli, dc_name, trust_passwd);
+ for (i = 0; (!NT_STATUS_IS_OK(ret)) && retry && (i < 3); i++)
+ ret = connect_to_domain_password_server(cli, dc_name, setup_creds_as,
+ sec_chan, trust_passwd, &retry);
+ return ret;
}
/***********************************************************************
- We have been asked to dynamcially determine the IP addresses of
+ We have been asked to dynamically determine the IP addresses of
the PDC and BDC's for DOMAIN, and query them in turn.
************************************************************************/
-static NTSTATUS find_connect_pdc(struct cli_state **cli,
+static NTSTATUS find_connect_dc(struct cli_state **cli,
const char *domain,
+ const char *setup_creds_as,
+ uint16 sec_chan,
unsigned char *trust_passwd,
time_t last_change_time)
{
- struct in_addr *ip_list = NULL;
- int count = 0;
- int i;
- NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
- time_t time_now = time(NULL);
- BOOL use_pdc_only = False;
-
- /*
- * If the time the machine password has changed
- * was less than an hour ago then we need to contact
- * the PDC only, as we cannot be sure domain replication
- * has yet taken place. Bug found by Gerald (way to go
- * Gerald !). JRA.
- */
-
- if (time_now - last_change_time < 3600)
- use_pdc_only = True;
-
- if (!get_dc_list(use_pdc_only, domain, &ip_list, &count))
- return NT_STATUS_UNSUCCESSFUL;
+ struct in_addr dc_ip;
+ fstring srv_name;
- /*
- * Firstly try and contact a PDC/BDC who has the same
- * network address as any of our interfaces.
- */
- for(i = 0; i < count; i++) {
- if(!is_local_net(ip_list[i]))
- continue;
-
- if(NT_STATUS_IS_OK(nt_status = attempt_connect_to_dc(cli, domain,
- &ip_list[i], trust_passwd)))
- break;
-
- zero_ip(&ip_list[i]); /* Tried and failed. */
+ if ( !rpc_find_dc(lp_workgroup(), srv_name, &dc_ip) ) {
+ DEBUG(0,("find_connect_dc: Failed to find an DCs for %s\n", lp_workgroup()));
+ return NT_STATUS_NO_LOGON_SERVERS;
}
-
- /*
- * Secondly try and contact a random PDC/BDC.
- */
- if(!NT_STATUS_IS_OK(nt_status)) {
- i = (sys_random() % count);
-
- if (!is_zero_ip(ip_list[i])) {
- if (!NT_STATUS_IS_OK(nt_status = attempt_connect_to_dc(cli, domain,
- &ip_list[i], trust_passwd)))
- zero_ip(&ip_list[i]); /* Tried and failed. */
- }
- }
-
- /*
- * Finally go through the IP list in turn, ignoring any addresses
- * we have already tried.
- */
- if(!NT_STATUS_IS_OK(nt_status)) {
- /*
- * Try and connect to any of the other IP addresses in the PDC/BDC list.
- * Note that from a WINS server the #1 IP address is the PDC.
- */
- for(i = 0; i < count; i++) {
- if (is_zero_ip(ip_list[i]))
- continue;
-
- if (NT_STATUS_IS_OK(nt_status = attempt_connect_to_dc(cli, domain,
- &ip_list[i], trust_passwd)))
- break;
- }
- }
-
- SAFE_FREE(ip_list);
- return nt_status;
+
+ return attempt_connect_to_dc( cli, domain, &dc_ip, setup_creds_as,
+ sec_chan, trust_passwd );
}
/***********************************************************************
const char *domain,
uchar chal[8],
auth_serversupplied_info **server_info,
- char *server, unsigned char *trust_passwd,
+ const char *server, const char *setup_creds_as,
+ uint16 sec_chan,
+ unsigned char trust_passwd[16],
time_t last_change_time)
{
fstring remote_machine;
NET_USER_INFO_3 info3;
struct cli_state *cli = NULL;
- NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
- struct passwd *pass;
+ NTSTATUS nt_status = NT_STATUS_NO_LOGON_SERVERS;
/*
* At this point, smb_apasswd points to the lanman response to
while (!NT_STATUS_IS_OK(nt_status) &&
next_token(&server,remote_machine,LIST_SEP,sizeof(remote_machine))) {
- if(strequal(remote_machine, "*")) {
- nt_status = find_connect_pdc(&cli, domain, trust_passwd, last_change_time);
+ if(lp_security() != SEC_ADS && strequal(remote_machine, "*")) {
+ nt_status = find_connect_dc(&cli, domain, setup_creds_as, sec_chan, trust_passwd, last_change_time);
} else {
- nt_status = connect_to_domain_password_server(&cli, remote_machine, trust_passwd);
+ int i;
+ BOOL retry = True;
+ for (i = 0; !NT_STATUS_IS_OK(nt_status) && retry && (i < 3); i++)
+ nt_status = connect_to_domain_password_server(&cli, remote_machine, setup_creds_as,
+ sec_chan, trust_passwd, &retry);
}
}
"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,
- get_nt_error_msg(nt_status)));
+ nt_errstr(nt_status)));
} else {
- char *dom_user;
-
- /* Check DOMAIN\username first to catch winbind users, then
- just the username for local users. */
-
- dom_user = talloc_asprintf(mem_ctx, "%s%s%s", user_info->domain.str,
- lp_winbind_separator(),
- user_info->internal_username.str);
-
- if (!dom_user) {
- DEBUG(0, ("talloc_asprintf failed!\n"));
- nt_status = NT_STATUS_NO_MEMORY;
- } else {
-
- if (!(pass = Get_Pwnam(dom_user)))
- pass = Get_Pwnam(user_info->internal_username.str);
-
- if (pass) {
- make_server_info_pw(server_info, pass);
- if (!server_info) {
- nt_status = NT_STATUS_NO_MEMORY;
- }
- } else {
- nt_status = NT_STATUS_NO_SUCH_USER;
- }
- }
- }
-
- /* Store the user group information in the server_info returned to the caller. */
-
- if (NT_STATUS_IS_OK(nt_status) && (info3.num_groups2 != 0)) {
- int i;
- NT_USER_TOKEN *ptok;
- auth_serversupplied_info *pserver_info = *server_info;
-
- if ((pserver_info->ptok = malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) {
- DEBUG(0, ("domain_client_validate: out of memory allocating rid group membership\n"));
- nt_status = NT_STATUS_NO_MEMORY;
- free_server_info(server_info);
- goto done;
- }
-
- ptok = pserver_info->ptok;
- ptok->num_sids = (size_t)info3.num_groups2;
-
- if ((ptok->user_sids = (DOM_SID *)malloc( sizeof(DOM_SID) * ptok->num_sids )) == NULL) {
- DEBUG(0, ("domain_client_validate: Out of memory allocating group SIDS\n"));
- nt_status = NT_STATUS_NO_MEMORY;
- free_server_info(server_info);
- goto done;
- }
-
- for (i = 0; i < ptok->num_sids; i++) {
- sid_copy(&ptok->user_sids[i], &info3.dom_sid.sid);
- sid_append_rid(&ptok->user_sids[i], info3.gids[i].g_rid);
- }
-
+ nt_status = make_server_info_info3(mem_ctx, user_info->internal_username.str,
+ user_info->smb_name.str, domain, server_info, &info3);
uni_group_cache_store_netlogon(mem_ctx, &info3);
}
}
#endif /* 0 */
- done:
-
/* 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);
+ release_server_mutex();
return nt_status;
}
char *password_server;
unsigned char trust_passwd[16];
time_t last_change_time;
- char *domain = lp_workgroup();
+ const char *domain = lp_workgroup();
if (!user_info || !server_info || !auth_context) {
DEBUG(1,("check_ntdomain_security: Critical variables not present. Failing.\n"));
* password file.
*/
- if(is_netbios_alias_or_name(user_info->domain.str)) {
+ if(is_myname(user_info->domain.str)) {
DEBUG(3,("check_ntdomain_security: Requested domain was for this machine.\n"));
return NT_STATUS_LOGON_FAILURE;
}
if (!secrets_fetch_trust_account_password(domain, trust_passwd, &last_change_time))
{
- DEBUG(0, ("check_domain_security: could not fetch trust account password for domain %s\n", lp_workgroup()));
+ 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 is expired and need to be changed */
- if (time(NULL) > last_change_time + lp_machine_password_timeout())
- {
- global_machine_password_needs_changing = True;
+ /* 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;
+ }
}
/*
nt_status = domain_client_validate(mem_ctx, user_info, domain,
(uchar *)auth_context->challenge.data,
server_info,
- password_server, trust_passwd, last_change_time);
-
+ password_server, global_myname(), SEC_CHAN_WKSTA, trust_passwd, last_change_time);
return nt_status;
}
/* module initialisation */
-BOOL auth_init_ntdomain(struct auth_context *auth_context, auth_methods **auth_method)
+NTSTATUS auth_init_ntdomain(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
{
if (!make_auth_methods(auth_context, auth_method)) {
- return False;
+ return NT_STATUS_NO_MEMORY;
}
+ (*auth_method)->name = "ntdomain";
(*auth_method)->auth = check_ntdomain_security;
+ return NT_STATUS_OK;
+}
+
+
+/****************************************************************************
+ Check for a valid username and password in a trusted domain
+****************************************************************************/
+
+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)
+{
+ NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
+ unsigned char trust_md4_password[16];
+ char *trust_password;
+ time_t last_change_time;
+ DOM_SID sid;
+
+ if (!user_info || !server_info || !auth_context) {
+ DEBUG(1,("check_trustdomain_security: Critical variables not present. Failing.\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /*
+ * 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(is_myname(user_info->domain.str)) {
+ DEBUG(3,("check_trustdomain_security: Requested domain was for this machine.\n"));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ /*
+ * Check that the requested domain is not our own domain,
+ * If it is, we should use our own local password file.
+ */
+
+ if(strequal(lp_workgroup(), (user_info->domain.str))) {
+ DEBUG(3,("check_trustdomain_security: Requested domain was for this domain.\n"));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ /*
+ * Get the trusted account password for the trusted domain
+ * 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));
+ 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));
+#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())
+ {
+ global_machine_password_needs_changing = True;
+ }
+#endif
+
+ nt_status = domain_client_validate(mem_ctx, user_info, user_info->domain.str,
+ (uchar *)auth_context->challenge.data,
+ server_info, "*" /* Do a lookup */,
+ lp_workgroup(), SEC_CHAN_DOMAIN, trust_md4_password, last_change_time);
+
+ return nt_status;
+}
+
+/* module initialisation */
+NTSTATUS auth_init_trustdomain(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
+{
+ if (!make_auth_methods(auth_context, auth_method)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ (*auth_method)->name = "trustdomain";
+ (*auth_method)->auth = check_trustdomain_security;
+ return NT_STATUS_OK;
+}
+
+int auth_domain_init(void)
+{
+ smb_register_auth("trustdomain", auth_init_trustdomain, AUTH_INTERFACE_VERSION);
+ smb_register_auth("ntdomain", auth_init_ntdomain, AUTH_INTERFACE_VERSION);
return True;
}
git.samba.org / jra / samba / .git / blobdiff