int winbind_getgroups(const char *user, gid_t **list) { /* * Don't do the lookup if the name has no separator _and_ we are not in * 'winbind use default domain' mode. */ if (!(strchr(user, *lp_winbind_separator()) || lp_winbind_use_default_domain())) return -1; /* Fetch list of groups */ return wb_getgroups(user, list); }
bool lookup_name_smbconf(TALLOC_CTX *mem_ctx, const char *full_name, int flags, const char **ret_domain, const char **ret_name, struct dom_sid *ret_sid, enum lsa_SidType *ret_type) { char *qualified_name; const char *p; /* NB. No winbindd_separator here as lookup_name needs \\' */ if ((p = strchr_m(full_name, *lp_winbind_separator())) != NULL) { /* The name is already qualified with a domain. */ if (*lp_winbind_separator() != '\\') { char *tmp; /* lookup_name() needs '\\' as a separator */ tmp = talloc_strdup(mem_ctx, full_name); if (!tmp) { return false; } tmp[p - full_name] = '\\'; full_name = tmp; } return lookup_name(mem_ctx, full_name, flags, ret_domain, ret_name, ret_sid, ret_type); } /* Try with winbind default domain name. */ if (lp_winbind_use_default_domain()) { bool ok; qualified_name = talloc_asprintf(mem_ctx, "%s\\%s", lp_workgroup(), full_name); if (qualified_name == NULL) { return false; } ok = lookup_name(mem_ctx, qualified_name, flags, ret_domain, ret_name, ret_sid, ret_type); if (ok) { return true; } } /* Try with our own SAM name. */ qualified_name = talloc_asprintf(mem_ctx, "%s\\%s", get_global_sam_name(), full_name ); if (!qualified_name) { return false; } if (lookup_name(mem_ctx, qualified_name, flags, ret_domain, ret_name, ret_sid, ret_type)) { return true; } /* Finally try with "Unix Users" or "Unix Group" */ qualified_name = talloc_asprintf(mem_ctx, "%s\\%s", flags & LOOKUP_NAME_GROUP ? unix_groups_domain_name() : unix_users_domain_name(), full_name ); if (!qualified_name) { return false; } return lookup_name(mem_ctx, qualified_name, flags, ret_domain, ret_name, ret_sid, ret_type); }
enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state) { NTSTATUS result; unsigned char trust_passwd[16]; time_t last_change_time; uint32 sec_channel_type; NET_USER_INFO_3 info3; struct cli_state *cli = NULL; TALLOC_CTX *mem_ctx = NULL; char *name_user = NULL; const char *name_domain = NULL; const char *workstation; struct winbindd_domain *contact_domain; DOM_CRED ret_creds; int attempts = 0; BOOL retry; DATA_BLOB lm_resp, nt_resp; if (!state->privileged) { char *error_string = NULL; DEBUG(2, ("winbindd_pam_auth_crap: non-privileged access denied. !\n")); DEBUGADD(2, ("winbindd_pam_auth_crap: Ensure permissions on %s are set correctly.\n", get_winbind_priv_pipe_dir())); /* send a better message than ACCESS_DENIED */ asprintf(&error_string, "winbind client not authorized to use winbindd_pam_auth_crap. Ensure permissions on %s are set correctly.", get_winbind_priv_pipe_dir()); push_utf8_fstring(state->response.data.auth.error_string, error_string); SAFE_FREE(error_string); result = NT_STATUS_ACCESS_DENIED; goto done; } /* Ensure null termination */ state->request.data.auth_crap.user[sizeof(state->request.data.auth_crap.user)-1]=0; state->request.data.auth_crap.domain[sizeof(state->request.data.auth_crap.domain)-1]=0; if (!(mem_ctx = talloc_init("winbind pam auth crap for (utf8) %s", state->request.data.auth_crap.user))) { DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n")); result = NT_STATUS_NO_MEMORY; goto done; } if (pull_utf8_talloc(mem_ctx, &name_user, state->request.data.auth_crap.user) == (size_t)-1) { DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n")); result = NT_STATUS_UNSUCCESSFUL; goto done; } if (*state->request.data.auth_crap.domain) { char *dom = NULL; if (pull_utf8_talloc(mem_ctx, &dom, state->request.data.auth_crap.domain) == (size_t)-1) { DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n")); result = NT_STATUS_UNSUCCESSFUL; goto done; } name_domain = dom; } else if (lp_winbind_use_default_domain()) { name_domain = lp_workgroup(); } else { DEBUG(5,("no domain specified with username (%s) - failing auth\n", name_user)); result = NT_STATUS_NO_SUCH_USER; goto done; } DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n", (unsigned long)state->pid, name_domain, name_user)); if (*state->request.data.auth_crap.workstation) { char *wrk = NULL; if (pull_utf8_talloc(mem_ctx, &wrk, state->request.data.auth_crap.workstation) == (size_t)-1) { DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n")); result = NT_STATUS_UNSUCCESSFUL; goto done; } workstation = wrk; } else { workstation = global_myname(); } if (state->request.data.auth_crap.lm_resp_len > sizeof(state->request.data.auth_crap.lm_resp) || state->request.data.auth_crap.nt_resp_len > sizeof(state->request.data.auth_crap.nt_resp)) { DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n", state->request.data.auth_crap.lm_resp_len, state->request.data.auth_crap.nt_resp_len)); result = NT_STATUS_INVALID_PARAMETER; goto done; } lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len); nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len); /* what domain should we contact? */ if ( IS_DC ) { if (!(contact_domain = find_domain_from_name(name_domain))) { DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n", state->request.data.auth_crap.user, name_domain, name_user, name_domain)); result = NT_STATUS_NO_SUCH_USER; goto done; } } else { if (is_myname(name_domain)) { DEBUG(3, ("Authentication for domain %s (local domain to this server) not supported at this stage\n", name_domain)); result = NT_STATUS_NO_SUCH_USER; goto done; } if (!(contact_domain = find_our_domain())) { DEBUG(1, ("Authenticatoin for [%s] -> [%s]\\[%s] in our domain failed - we can't find our domain!\n", state->request.data.auth_crap.user, name_domain, name_user)); result = NT_STATUS_NO_SUCH_USER; goto done; } } if ( !get_trust_pw(contact_domain->name, trust_passwd, &last_change_time, &sec_channel_type) ) { result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO; goto done; } do { ZERO_STRUCT(info3); ZERO_STRUCT(ret_creds); retry = False; /* Don't shut this down - it belongs to the connection cache code */ result = cm_get_netlogon_cli(contact_domain, trust_passwd, sec_channel_type, False, &cli); if (!NT_STATUS_IS_OK(result)) { DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result))); goto done; } result = cli_netlogon_sam_network_logon(cli, mem_ctx, &ret_creds, name_user, name_domain, workstation, state->request.data.auth_crap.chal, lm_resp, nt_resp, &info3); attempts += 1; /* We have to try a second time as cm_get_netlogon_cli might not yet have noticed that the DC has killed our connection. */ if ( cli->fd == -1 ) { retry = True; continue; } /* if we get access denied, a possible cause was that we had and open connection to the DC, but someone changed our machine account password out from underneath us using 'net rpc changetrustpw' */ if ( NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED) ) { DEBUG(3,("winbindd_pam_auth_crap: sam_logon returned ACCESS_DENIED. Maybe the trust account " "password was changed and we didn't know it. Killing connections to domain %s\n", contact_domain->name)); winbindd_cm_flush(); retry = True; cli = NULL; } } while ( (attempts < 2) && retry ); if (cli != NULL) { /* We might have come out of the loop above with cli == NULL, so don't dereference that. */ clnt_deal_with_creds(cli->sess_key, &(cli->clnt_cred), &ret_creds); } if (NT_STATUS_IS_OK(result)) { netsamlogon_cache_store( cli->mem_ctx, &info3 ); wcache_invalidate_samlogon(find_domain_from_name(name_domain), &info3); if (!NT_STATUS_IS_OK(result = check_info3_in_group(mem_ctx, &info3, state->request.data.auth_crap.required_membership_sid))) { DEBUG(3, ("User %s is not in the required group (%s), so plaintext authentication is rejected\n", state->request.data.auth_crap.user, state->request.data.auth_crap.required_membership_sid)); goto done; } if (state->request.flags & WBFLAG_PAM_INFO3_NDR) { result = append_info3_as_ndr(mem_ctx, state, &info3); } else if (state->request.flags & WBFLAG_PAM_UNIX_NAME) { /* ntlm_auth should return the unix username, per 'winbind use default domain' settings and the like */ fstring username_out; const char *nt_username, *nt_domain; if (!(nt_username = unistr2_tdup(mem_ctx, &(info3.uni_user_name)))) { /* If the server didn't give us one, just use the one we sent them */ nt_username = name_user; } if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3.uni_logon_dom)))) { /* If the server didn't give us one, just use the one we sent them */ nt_domain = name_domain; } fill_domain_username(username_out, nt_domain, nt_username); DEBUG(5, ("Setting unix username to [%s]\n", username_out)); /* this interface is in UTF8 */ if (push_utf8_allocate((char **)&state->response.extra_data, username_out) == -1) { result = NT_STATUS_NO_MEMORY; goto done; } state->response.length += strlen(state->response.extra_data)+1; } if (state->request.flags & WBFLAG_PAM_USER_SESSION_KEY) { memcpy(state->response.data.auth.user_session_key, info3.user_sess_key, sizeof(state->response.data.auth.user_session_key) /* 16 */); } if (state->request.flags & WBFLAG_PAM_LMKEY) { memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.first_8_lm_hash) /* 8 */); } } done: /* give us a more useful (more correct?) error code */ if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) { result = NT_STATUS_NO_LOGON_SERVERS; } if (state->request.flags & WBFLAG_PAM_NT_STATUS_SQUASH) { result = nt_status_squash(result); } state->response.data.auth.nt_status = NT_STATUS_V(result); push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result)); /* we might have given a more useful error above */ if (!*state->response.data.auth.error_string) push_utf8_fstring(state->response.data.auth.error_string, get_friendly_nt_error_msg(result)); state->response.data.auth.pam_error = nt_status_to_pam(result); DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("NTLM CRAP authentication for user [%s]\\[%s] returned %s (PAM: %d)\n", name_domain, name_user, state->response.data.auth.nt_status_string, state->response.data.auth.pam_error)); if (mem_ctx) talloc_destroy(mem_ctx); return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR; }
struct passwd *smb_getpwnam( TALLOC_CTX *mem_ctx, const char *domuser, char **p_save_username, bool create ) { struct passwd *pw = NULL; char *p = NULL; char *username = NULL; /* we only save a copy of the username it has been mangled by winbindd use default domain */ *p_save_username = NULL; /* don't call map_username() here since it has to be done higher up the stack so we don't call it multiple times */ username = talloc_strdup(mem_ctx, domuser); if (!username) { return NULL; } p = strchr_m( username, *lp_winbind_separator() ); /* code for a DOMAIN\user string */ if ( p ) { pw = Get_Pwnam_alloc( mem_ctx, domuser ); if ( pw ) { /* make sure we get the case of the username correct */ /* work around 'winbind use default domain = yes' */ if ( lp_winbind_use_default_domain() && !strchr_m( pw->pw_name, *lp_winbind_separator() ) ) { char *domain; /* split the domain and username into 2 strings */ *p = '\0'; domain = username; *p_save_username = talloc_asprintf(mem_ctx, "%s%c%s", domain, *lp_winbind_separator(), pw->pw_name); if (!*p_save_username) { TALLOC_FREE(pw); return NULL; } } else { *p_save_username = talloc_strdup(mem_ctx, pw->pw_name); } /* whew -- done! */ return pw; } /* setup for lookup of just the username */ /* remember that p and username are overlapping memory */ p++; username = talloc_strdup(mem_ctx, p); if (!username) { return NULL; } } /* just lookup a plain username */ pw = Get_Pwnam_alloc(mem_ctx, username); /* Create local user if requested but only if winbindd is not running. We need to protect against cases where winbindd is failing and then prematurely creating users in /etc/passwd */ if ( !pw && create && !winbind_ping() ) { /* Don't add a machine account. */ if (username[strlen(username)-1] == '$') return NULL; _smb_create_user(NULL, username, NULL); pw = Get_Pwnam_alloc(mem_ctx, username); } /* one last check for a valid passwd struct */ if (pw) { *p_save_username = talloc_strdup(mem_ctx, pw->pw_name); } return pw; }