+++ /dev/null
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- 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
- (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"
-
-extern pstring global_myname;
-
-/***********************************************************************
- Connect to a remote machine for domain security authentication
- given a name or IP address.
- ***********************************************************************/
-
-static BOOL connect_to_domain_password_server(struct cli_state *pcli,
- char *server, unsigned char *trust_passwd)
-{
- struct in_addr dest_ip;
- fstring remote_machine;
- NTSTATUS result;
-
- if(cli_initialise(pcli) == NULL) {
- DEBUG(0,("connect_to_domain_password_server: unable to initialize client connection.\n"));
- return False;
- }
-
- 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 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 False;
- }
- } else {
- fstrcpy(remote_machine, server);
- }
-
- standard_sub_basic(remote_machine);
- strupper(remote_machine);
-
- if(!resolve_name( remote_machine, &dest_ip, 0x20)) {
- DEBUG(1,("connect_to_domain_password_server: Can't resolve address for %s\n", remote_machine));
- cli_shutdown(pcli);
- return False;
- }
-
- if (ismyip(dest_ip)) {
- DEBUG(1,("connect_to_domain_password_server: Password server loop - not using password server %s\n",
- remote_machine));
- cli_shutdown(pcli);
- return False;
- }
-
- if (!cli_connect(pcli, remote_machine, &dest_ip)) {
- DEBUG(0,("connect_to_domain_password_server: unable to connect to SMB server on \
-machine %s. Error was : %s.\n", remote_machine, cli_errstr(pcli) ));
- cli_shutdown(pcli);
- return False;
- }
-
- if (!attempt_netbios_session_request(pcli, global_myname, remote_machine, &dest_ip)) {
- DEBUG(0,("connect_to_password_server: machine %s rejected the NetBIOS session request.\n", remote_machine));
- return False;
- }
-
- pcli->protocol = PROTOCOL_NT1;
-
- if (!cli_negprot(pcli)) {
- DEBUG(0,("connect_to_domain_password_server: machine %s rejected the negotiate protocol. \
-Error was : %s.\n", remote_machine, cli_errstr(pcli) ));
- cli_shutdown(pcli);
- return False;
- }
-
- if (pcli->protocol != PROTOCOL_NT1) {
- DEBUG(0,("connect_to_domain_password_server: machine %s didn't negotiate NT protocol.\n",
- remote_machine));
- cli_shutdown(pcli);
- return False;
- }
-
- /*
- * Do an anonymous session setup.
- */
-
- if (!cli_session_setup(pcli, "", "", 0, "", 0, "")) {
- DEBUG(0,("connect_to_domain_password_server: machine %s rejected the session setup. \
-Error was : %s.\n", remote_machine, cli_errstr(pcli) ));
- cli_shutdown(pcli);
- return False;
- }
-
- if (!(pcli->sec_mode & 1)) {
- DEBUG(1,("connect_to_domain_password_server: machine %s isn't in user level security mode\n",
- remote_machine));
- cli_shutdown(pcli);
- return False;
- }
-
- if (!cli_send_tconX(pcli, "IPC$", "IPC", "", 1)) {
- DEBUG(0,("connect_to_domain_password_server: machine %s rejected the tconX on the IPC$ share. \
-Error was : %s.\n", remote_machine, cli_errstr(pcli) ));
- cli_shutdown(pcli);
- return False;
- }
-
- /*
- * We now have an anonymous connection to IPC$ on the domain password server.
- */
-
- /*
- * Even if the connect succeeds we need to setup the netlogon
- * pipe here. We do this as we may just have changed the domain
- * account password on the PDC and yet we may be talking to
- * a BDC that doesn't have this replicated yet. In this case
- * a successful connect to a DC needs to take the netlogon connect
- * into account also. This patch from "Bjart Kvarme" <bjart.kvarme@usit.uio.no>.
- */
-
- if(cli_nt_session_open(pcli, PIPE_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(pcli)));
- cli_nt_session_close(pcli);
- cli_ulogoff(pcli);
- cli_shutdown(pcli);
- return False;
- }
-
- result = cli_nt_setup_creds(pcli, trust_passwd);
-
- 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)));
- cli_nt_session_close(pcli);
- cli_ulogoff(pcli);
- cli_shutdown(pcli);
- return(False);
- }
-
- return True;
-}
-
-/***********************************************************************
- Utility function to attempt a connection to an IP address of a DC.
-************************************************************************/
-
-static BOOL attempt_connect_to_dc(struct cli_state *pcli, struct in_addr *ip,
- unsigned char *trust_passwd)
-{
- fstring dc_name;
-
- /*
- * Ignore addresses we have already tried.
- */
-
- if (is_zero_ip(*ip))
- return False;
-
- if (!lookup_dc_name(global_myname, lp_workgroup(), ip, dc_name))
- return False;
-
- return connect_to_domain_password_server(pcli, dc_name, trust_passwd);
-}
-
-/***********************************************************************
- We have been asked to dynamcially determine the IP addresses of
- the PDC and BDC's for this DOMAIN, and query them in turn.
-************************************************************************/
-
-static BOOL find_connect_pdc(struct cli_state *pcli,
- unsigned char *trust_passwd,
- time_t last_change_time)
-{
- struct in_addr *ip_list = NULL;
- int count = 0;
- int i;
- BOOL connected_ok = False;
- 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, lp_workgroup(), &ip_list, &count))
- return False;
-
- /*
- * 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((connected_ok = attempt_connect_to_dc(pcli, &ip_list[i], trust_passwd)))
- break;
-
- zero_ip(&ip_list[i]); /* Tried and failed. */
- }
-
- /*
- * Secondly try and contact a random PDC/BDC.
- */
- if(!connected_ok) {
- i = (sys_random() % count);
-
- if (!is_zero_ip(ip_list[i]) {
- if (!(connected_ok = attempt_connect_to_dc(pcli, &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(!connected_ok) {
- /*
- * 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((connected_ok = attempt_connect_to_dc(pcli, &ip_list[i], trust_passwd)))
- break;
- }
- }
-
- SAFE_FREE(ip_list);
- return connected_ok;
-}
-
-/***********************************************************************
- Do the same as security=server, but using NT Domain calls and a session
- key from the machine password. If the server parameter is specified
- use it, otherwise figure out a server from the 'password server' param.
-************************************************************************/
-
-NTSTATUS domain_client_validate(const auth_usersupplied_info *user_info,
- auth_serversupplied_info **server_info,
- char *server, unsigned char *trust_passwd,
- time_t last_change_time)
-{
- fstring remote_machine;
- NET_ID_INFO_CTR ctr;
- NET_USER_INFO_3 info3;
- struct cli_state cli;
- uint32 smb_uid_low;
- BOOL connected_ok = False;
- NTSTATUS status;
- struct passwd *pass;
-
- /*
- * 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(user_info->domain.str, global_myname)) {
- DEBUG(3,("domain_client_validate: Requested domain was for this machine.\n"));
- return NT_STATUS_LOGON_FAILURE;
- }
-
- /*
- * At this point, smb_apasswd points to the lanman response to
- * the challenge in local_challenge, and smb_ntpasswd points to
- * the NT response to the challenge in local_challenge. Ship
- * these over the secure channel to a domain controller and
- * see if they were valid.
- */
-
- ZERO_STRUCT(cli);
-
- while (!connected_ok &&
- next_token(&server,remote_machine,LIST_SEP,sizeof(remote_machine))) {
- if(strequal(remote_machine, "*")) {
- connected_ok = find_connect_pdc(&cli, trust_passwd, last_change_time);
- } else {
- connected_ok = connect_to_domain_password_server(&cli, remote_machine, trust_passwd);
- }
- }
-
- if (!connected_ok) {
- DEBUG(0,("domain_client_validate: Domain password server not available.\n"));
- cli_shutdown(&cli);
- return NT_STATUS_LOGON_FAILURE;
- }
-
- /* We really don't care what LUID we give the user. */
- generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
-
- ZERO_STRUCT(info3);
-
- /*
- * If this call succeeds, we now have lots of info about the user
- * in the info3 structure.
- */
-
- status = cli_nt_login_network(&cli, user_info, smb_uid_low,
- &ctr, &info3);
-
- if (!NT_STATUS_IS_OK(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,
- get_nt_error_msg(status)));
- } else {
- char *dom_user;
-
- /* Check DOMAIN\username first to catch winbind users, then
- just the username for local users. */
-
- if (asprintf(&dom_user, "%s%s%s", user_info->domain.str,
- lp_winbind_separator(),
- user_info->internal_username.str) > 0) {
-
- if (!(pass = Get_Pwnam(dom_user)))
- pass = Get_Pwnam(user_info->internal_username.str);
-
- SAFE_FREE(dom_user);
-
- if (pass) {
- make_server_info_pw(server_info, pass);
- if (!server_info) {
- status = NT_STATUS_NO_MEMORY;
- }
- } else {
- status = NT_STATUS_NO_SUCH_USER;
- }
- } else {
- status = NT_STATUS_NO_MEMORY;
- }
- }
-
- /* Store the user group information in the server_info returned to the caller. */
-
- if (NT_STATUS_IS_OK(status) && (info3.num_groups2 != 0)) {
- DOM_SID domain_sid;
- 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"));
- 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"));
- status = NT_STATUS_NO_MEMORY;
- free_server_info(server_info);
- goto done;
- }
-
- if (!secrets_fetch_domain_sid(lp_workgroup(), &domain_sid)) {
- DEBUG(0, ("domain_client_validate: unable to fetch domain sid.\n"));
- status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
- free_server_info(server_info);
- goto done;
- }
-
- for (i = 0; i < ptok->num_sids; i++) {
- sid_copy(&ptok->user_sids[i], &domain_sid);
- sid_append_rid(&ptok->user_sids[i], info3.gids[i].g_rid);
- }
- }
-
-#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, remote_machine, cli_errstr(&cli)));
- status = NT_STATUS_LOGON_FAILURE;
- }
- }
-#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);
- return status;
-}
git.samba.org / vlendec / samba-autobuild / .git / commitdiff