diff options
Diffstat (limited to 'source4/auth/auth_domain.c')
| -rw-r--r-- | source4/auth/auth_domain.c | 552 |
1 files changed, 0 insertions, 552 deletions
diff --git a/source4/auth/auth_domain.c b/source4/auth/auth_domain.c deleted file mode 100644 index a1868e1b13..0000000000 --- a/source4/auth/auth_domain.c +++ /dev/null @@ -1,552 +0,0 @@ -/* - Unix SMB/CIFS implementation. - 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" - -#undef DBGC_CLASS -#define DBGC_CLASS DBGC_AUTH - -BOOL global_machine_password_needs_changing = False; - - -/* - 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 ipv4_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 ipv4_addr *dest_ip) -{ - if (is_ipaddress(server)) { - struct ipv4_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_passwd the trust password to establish the - * credentials with. - * - **/ - -static NTSTATUS connect_to_domain_password_server(struct smbcli_state **cli, - const char *server, - const char *setup_creds_as, - uint16_t sec_chan, - const uint8_t *trust_passwd, - BOOL *retry) -{ - struct ipv4_addr dest_ip; - fstring remote_machine; - NTSTATUS result; - uint32_t neg_flags = 0x000001ff; - - *retry = False; - - if (lp_security() == SEC_ADS) - result = ads_resolve_dc(remote_machine, &dest_ip); - else - result = rpc_resolve_dc(server, remote_machine, &dest_ip); - - 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_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 - 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 = smbcli_full_connection(NULL, cli, lp_netbios_name(), remote_machine, - 0, "IPC$", NULL, "", "", ""); - - if (!NT_STATUS_IS_OK(result)) { - release_server_mutex(); - return result; - } - - /* - * We now have an anonymous connection to IPC$ 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(smbcli_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, smbcli_errstr(*cli))); - smbcli_nt_session_close(*cli); - smbcli_ulogoff(*cli); - smbcli_shutdown(*cli); - release_server_mutex(); - return NT_STATUS_NO_LOGON_SERVERS; - } - - 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 = smbcli_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 NETLOGON credentials to machine \ -%s. Error was : %s.\n", remote_machine, nt_errstr(result))); - smbcli_nt_session_close(*cli); - smbcli_ulogoff(*cli); - smbcli_shutdown(*cli); - release_server_mutex(); - return result; - } - - /* We exit here with the mutex *locked*. JRA */ - - return NT_STATUS_OK; -} - -/*********************************************************************** - Utility function to attempt a connection to an IP address of a DC. -************************************************************************/ - -static NTSTATUS attempt_connect_to_dc(struct smbcli_state **cli, - const char *domain, - struct ipv4_addr *ip, - const char *setup_creds_as, - uint16_t sec_chan, - const uint8_t *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_NO_LOGON_SERVERS; - - if (!lookup_dc_name(lp_netbios_name(), domain, ip, dc_name)) - return NT_STATUS_NO_LOGON_SERVERS; - - 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 dynamically determine the IP addresses of - the PDC and BDC's for DOMAIN, and query them in turn. -************************************************************************/ -static NTSTATUS find_connect_dc(struct smbcli_state **cli, - const char *domain, - const char *setup_creds_as, - uint16_t sec_chan, - uint8_t *trust_passwd, - time_t last_change_time) -{ - struct ipv4_addr dc_ip; - fstring srv_name; - - 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; - } - - return attempt_connect_to_dc( cli, domain, &dc_ip, setup_creds_as, - sec_chan, trust_passwd ); -} - -/*********************************************************************** - 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. -************************************************************************/ - -static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx, - const auth_usersupplied_info *user_info, - const char *domain, - uint8_t chal[8], - auth_serversupplied_info **server_info, - const char *server, const char *setup_creds_as, - uint16_t sec_chan, - uint8_t trust_passwd[16], - time_t last_change_time) -{ - fstring remote_machine; - NET_USER_INFO_3 info3; - struct smbcli_state *cli = NULL; - NTSTATUS nt_status = NT_STATUS_NO_LOGON_SERVERS; - - /* - * 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. - */ - - while (!NT_STATUS_IS_OK(nt_status) && - next_token(&server,remote_machine,LIST_SEP,sizeof(remote_machine))) { - 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 { - 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); - } - } - - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(0,("domain_client_validate: Domain password server not available.\n")); - return nt_status; - } - - ZERO_STRUCT(info3); - - /* - * If this call succeeds, we now have lots of info about the user - * in the info3 structure. - */ - - nt_status = smbcli_netlogon_sam_network_logon(cli, mem_ctx, - user_info->smb_name.str, user_info->domain.str, - user_info->wksta_name.str, chal, - user_info->lm_resp, user_info->nt_resp, - &info3); - - 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, - nt_errstr(nt_status))); - } else { - nt_status = make_server_info_info3(mem_ctx, user_info->internal_username.str, - user_info->smb_name.str, domain, server_info, &info3); -#if 0 - /* The stuff doesn't work right yet */ - SMB_ASSERT(sizeof((*server_info)->session_key) == sizeof(info3.user_sess_key)); - memcpy((*server_info)->session_key, info3.user_sess_key, sizeof((*server_info)->session_key)/* 16 */); - SamOEMhash((*server_info)->session_key, trust_passwd, sizeof((*server_info)->session_key)); -#endif - - uni_group_cache_store_netlogon(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(smbcli_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, smbcli_errstr(&cli))); - nt_status = NT_STATUS_LOGON_FAILURE; - } - } -#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..... */ - - smbcli_nt_session_close(cli); - smbcli_ulogoff(cli); - smbcli_shutdown(cli); - release_server_mutex(); - return nt_status; -} - -/**************************************************************************** - Check for a valid username and password in security=domain mode. -****************************************************************************/ - -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) -{ - NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE; - char *password_server; - uint8_t trust_passwd[16]; - time_t last_change_time; - const char *domain = lp_workgroup(); - - if (!user_info || !server_info || !auth_context) { - DEBUG(1,("check_ntdomain_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_ntdomain_security: Requested domain was for this machine.\n")); - return NT_STATUS_LOGON_FAILURE; - } - - /* - * 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)) - { - 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; - } - } - - /* - * Treat each name in the 'password server =' line as a potential - * PDC/BDC. Contact each in turn and try and authenticate. - */ - - password_server = lp_passwordserver(); - - nt_status = domain_client_validate(mem_ctx, user_info, domain, - (uint8_t *)auth_context->challenge.data, - server_info, - password_server, lp_netbios_name(), SEC_CHAN_WKSTA, trust_passwd, last_change_time); - return nt_status; -} - -/* module initialisation */ -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 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; - uint8_t 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, - (uint8_t *)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; -} |