summaryrefslogtreecommitdiff
path: root/source4/dsdb/samdb/ldb_modules/netlogon.c
diff options
context:
space:
mode:
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/netlogon.c')
-rw-r--r--source4/dsdb/samdb/ldb_modules/netlogon.c460
1 files changed, 460 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/netlogon.c b/source4/dsdb/samdb/ldb_modules/netlogon.c
new file mode 100644
index 0000000000..a381da833c
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/netlogon.c
@@ -0,0 +1,460 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ CLDAP server - netlogon handling
+
+ Copyright (C) Andrew Tridgell 2005
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
+
+ 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 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include <ldb.h>
+#include <ldb_errors.h>
+#include "lib/events/events.h"
+#include "smbd/service_task.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+#include "libcli/ldap/ldap_ndr.h"
+#include "libcli/security/security.h"
+#include "dsdb/samdb/samdb.h"
+#include "dsdb/samdb/ldb_modules/util.h"
+#include "auth/auth.h"
+#include "ldb_wrap.h"
+#include "system/network.h"
+#include "lib/socket/netif.h"
+#include "param/param.h"
+#include "../lib/tsocket/tsocket.h"
+#include "libds/common/flag_mapping.h"
+#include "lib/util/util_net.h"
+
+/*
+ fill in the cldap netlogon union for a given version
+*/
+NTSTATUS fill_netlogon_samlogon_response(struct ldb_context *sam_ctx,
+ TALLOC_CTX *mem_ctx,
+ const char *domain,
+ const char *netbios_domain,
+ struct dom_sid *domain_sid,
+ const char *domain_guid,
+ const char *user,
+ uint32_t acct_control,
+ const char *src_address,
+ uint32_t version,
+ struct loadparm_context *lp_ctx,
+ struct netlogon_samlogon_response *netlogon,
+ bool fill_on_blank_request)
+{
+ const char *dom_attrs[] = {"objectGUID", NULL};
+ const char *none_attrs[] = {NULL};
+ struct ldb_result *dom_res = NULL, *user_res = NULL;
+ int ret;
+ const char **services = lpcfg_server_services(lp_ctx);
+ uint32_t server_type;
+ const char *pdc_name;
+ struct GUID domain_uuid;
+ const char *dns_domain;
+ const char *forest_domain;
+ const char *pdc_dns_name;
+ const char *flatname;
+ const char *server_site;
+ const char *client_site;
+ const char *pdc_ip;
+ struct ldb_dn *domain_dn = NULL;
+ struct interface *ifaces;
+ bool user_known = false, am_rodc = false;
+ NTSTATUS status;
+
+ /* the domain parameter could have an optional trailing "." */
+ if (domain && domain[strlen(domain)-1] == '.') {
+ domain = talloc_strndup(mem_ctx, domain, strlen(domain)-1);
+ NT_STATUS_HAVE_NO_MEMORY(domain);
+ }
+
+ /* Lookup using long or short domainname */
+ if (domain && (strcasecmp_m(domain, lpcfg_dnsdomain(lp_ctx)) == 0)) {
+ domain_dn = ldb_get_default_basedn(sam_ctx);
+ }
+ if (netbios_domain && (strcasecmp_m(netbios_domain, lpcfg_sam_name(lp_ctx)) == 0)) {
+ domain_dn = ldb_get_default_basedn(sam_ctx);
+ }
+ if (domain_dn) {
+ const char *domain_identifier = domain != NULL ? domain
+ : netbios_domain;
+ ret = ldb_search(sam_ctx, mem_ctx, &dom_res,
+ domain_dn, LDB_SCOPE_BASE, dom_attrs,
+ "objectClass=domain");
+ if (ret != LDB_SUCCESS) {
+ DEBUG(2,("Error finding domain '%s'/'%s' in sam: %s\n",
+ domain_identifier,
+ ldb_dn_get_linearized(domain_dn),
+ ldb_errstring(sam_ctx)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+ if (dom_res->count != 1) {
+ DEBUG(2,("Error finding domain '%s'/'%s' in sam\n",
+ domain_identifier,
+ ldb_dn_get_linearized(domain_dn)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+ }
+
+ /* Lookup using GUID or SID */
+ if ((dom_res == NULL) && (domain_guid || domain_sid)) {
+ if (domain_guid) {
+ struct GUID binary_guid;
+ struct ldb_val guid_val;
+
+ /* By this means, we ensure we don't have funny stuff in the GUID */
+
+ status = GUID_from_string(domain_guid, &binary_guid);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /* And this gets the result into the binary format we want anyway */
+ status = GUID_to_ndr_blob(&binary_guid, mem_ctx, &guid_val);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ ret = ldb_search(sam_ctx, mem_ctx, &dom_res,
+ NULL, LDB_SCOPE_SUBTREE,
+ dom_attrs,
+ "(&(objectCategory=DomainDNS)(objectGUID=%s))",
+ ldb_binary_encode(mem_ctx, guid_val));
+ } else { /* domain_sid case */
+ ret = ldb_search(sam_ctx, mem_ctx, &dom_res,
+ NULL, LDB_SCOPE_SUBTREE,
+ dom_attrs,
+ "(&(objectCategory=DomainDNS)(objectSid=%s))",
+ dom_sid_string(mem_ctx, domain_sid));
+ }
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(2,("Unable to find a correct reference to GUID '%s' or SID '%s' in sam: %s\n",
+ domain_guid, dom_sid_string(mem_ctx, domain_sid),
+ ldb_errstring(sam_ctx)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ } else if (dom_res->count == 1) {
+ /* Ok, now just check it is our domain */
+ if (ldb_dn_compare(ldb_get_default_basedn(sam_ctx),
+ dom_res->msgs[0]->dn) != 0) {
+ DEBUG(2,("The GUID '%s' or SID '%s' doesn't identify our domain\n",
+ domain_guid,
+ dom_sid_string(mem_ctx, domain_sid)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+ } else {
+ DEBUG(2,("Unable to find a correct reference to GUID '%s' or SID '%s' in sam\n",
+ domain_guid, dom_sid_string(mem_ctx, domain_sid)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+ }
+
+ if (dom_res == NULL && fill_on_blank_request) {
+ /* blank inputs gives our domain - tested against
+ w2k8r2. Without this ADUC on Win7 won't start */
+ domain_dn = ldb_get_default_basedn(sam_ctx);
+ ret = ldb_search(sam_ctx, mem_ctx, &dom_res,
+ domain_dn, LDB_SCOPE_BASE, dom_attrs,
+ "objectClass=domain");
+ if (ret != LDB_SUCCESS) {
+ DEBUG(2,("Error finding domain '%s'/'%s' in sam: %s\n",
+ lpcfg_dnsdomain(lp_ctx),
+ ldb_dn_get_linearized(domain_dn),
+ ldb_errstring(sam_ctx)));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+ }
+
+ if (dom_res == NULL) {
+ DEBUG(2,(__location__ ": Unable to get domain information with no inputs\n"));
+ return NT_STATUS_NO_SUCH_DOMAIN;
+ }
+
+ /* work around different inputs for not-specified users */
+ if (!user) {
+ user = "";
+ }
+
+ /* Enquire about any valid username with just a CLDAP packet -
+ * if kerberos didn't also do this, the security folks would
+ * scream... */
+ if (user[0]) { \
+ /* Only allow some bits to be enquired: [MS-ATDS] 7.3.3.2 */
+ if (acct_control == (uint32_t)-1) {
+ acct_control = 0;
+ }
+ acct_control = acct_control & (ACB_TEMPDUP | ACB_NORMAL | ACB_DOMTRUST | ACB_WSTRUST | ACB_SVRTRUST);
+
+ /* We must exclude disabled accounts, but otherwise do the bitwise match the client asked for */
+ ret = ldb_search(sam_ctx, mem_ctx, &user_res,
+ dom_res->msgs[0]->dn, LDB_SCOPE_SUBTREE,
+ none_attrs,
+ "(&(objectClass=user)(samAccountName=%s)"
+ "(!(userAccountControl:" LDB_OID_COMPARATOR_AND ":=%u))"
+ "(userAccountControl:" LDB_OID_COMPARATOR_OR ":=%u))",
+ ldb_binary_encode_string(mem_ctx, user),
+ UF_ACCOUNTDISABLE, ds_acb2uf(acct_control));
+ if (ret != LDB_SUCCESS) {
+ DEBUG(2,("Unable to find reference to user '%s' with ACB 0x%8x under %s: %s\n",
+ user, acct_control, ldb_dn_get_linearized(dom_res->msgs[0]->dn),
+ ldb_errstring(sam_ctx)));
+ return NT_STATUS_NO_SUCH_USER;
+ } else if (user_res->count == 1) {
+ user_known = true;
+ } else {
+ user_known = false;
+ }
+
+ } else {
+ user_known = true;
+ }
+
+ server_type = DS_SERVER_DS;
+
+ if (samdb_is_pdc(sam_ctx)) {
+ server_type |= DS_SERVER_PDC;
+ }
+
+ if (samdb_is_gc(sam_ctx)) {
+ server_type |= DS_SERVER_GC;
+ }
+
+ if (str_list_check(services, "ldap")) {
+ server_type |= DS_SERVER_LDAP;
+ }
+
+ if (str_list_check(services, "kdc")) {
+ server_type |= DS_SERVER_KDC;
+ }
+
+ if (str_list_check(services, "ntp_signd")) {
+ server_type |= DS_SERVER_TIMESERV | DS_SERVER_GOOD_TIMESERV;
+ }
+
+ if (samdb_rodc(sam_ctx, &am_rodc) == LDB_SUCCESS && !am_rodc) {
+ server_type |= DS_SERVER_WRITABLE;
+ }
+
+ if (dsdb_functional_level(sam_ctx) >= DS_DOMAIN_FUNCTION_2008) {
+ if (server_type & DS_SERVER_WRITABLE) {
+ server_type |= DS_SERVER_FULL_SECRET_DOMAIN_6;
+ } else {
+ server_type |= DS_SERVER_SELECT_SECRET_DOMAIN_6;
+ }
+ }
+
+ if (version & (NETLOGON_NT_VERSION_5EX|NETLOGON_NT_VERSION_5EX_WITH_IP)) {
+ pdc_name = lpcfg_netbios_name(lp_ctx);
+ } else {
+ pdc_name = talloc_asprintf(mem_ctx, "\\\\%s",
+ lpcfg_netbios_name(lp_ctx));
+ NT_STATUS_HAVE_NO_MEMORY(pdc_name);
+ }
+ domain_uuid = samdb_result_guid(dom_res->msgs[0], "objectGUID");
+ dns_domain = lpcfg_dnsdomain(lp_ctx);
+ forest_domain = samdb_forest_name(sam_ctx, mem_ctx);
+ NT_STATUS_HAVE_NO_MEMORY(forest_domain);
+ pdc_dns_name = talloc_asprintf(mem_ctx, "%s.%s",
+ strlower_talloc(mem_ctx,
+ lpcfg_netbios_name(lp_ctx)),
+ dns_domain);
+ NT_STATUS_HAVE_NO_MEMORY(pdc_dns_name);
+ flatname = lpcfg_workgroup(lp_ctx);
+
+ server_site = samdb_server_site_name(sam_ctx, mem_ctx);
+ NT_STATUS_HAVE_NO_MEMORY(server_site);
+ client_site = samdb_client_site_name(sam_ctx, mem_ctx,
+ src_address, NULL);
+ NT_STATUS_HAVE_NO_MEMORY(client_site);
+ if (strcasecmp(server_site, client_site) == 0) {
+ server_type |= DS_SERVER_CLOSEST;
+ }
+
+ load_interface_list(mem_ctx, lp_ctx, &ifaces);
+ if (src_address) {
+ pdc_ip = iface_list_best_ip(ifaces, src_address);
+ } else {
+ pdc_ip = iface_list_first_v4(ifaces);
+ }
+ if (pdc_ip == NULL || !is_ipaddress_v4(pdc_ip)) {
+ /* this matches windows behaviour */
+ pdc_ip = "127.0.0.1";
+ }
+
+ ZERO_STRUCTP(netlogon);
+
+ /* check if either of these bits is present */
+ if (version & (NETLOGON_NT_VERSION_5EX|NETLOGON_NT_VERSION_5EX_WITH_IP)) {
+ uint32_t extra_flags = 0;
+ netlogon->ntver = NETLOGON_NT_VERSION_5EX;
+
+ /* could check if the user exists */
+ if (user_known) {
+ netlogon->data.nt5_ex.command = LOGON_SAM_LOGON_RESPONSE_EX;
+ } else {
+ netlogon->data.nt5_ex.command = LOGON_SAM_LOGON_USER_UNKNOWN_EX;
+ }
+ netlogon->data.nt5_ex.pdc_name = pdc_name;
+ netlogon->data.nt5_ex.user_name = user;
+ netlogon->data.nt5_ex.domain_name = flatname;
+ netlogon->data.nt5_ex.domain_uuid = domain_uuid;
+ netlogon->data.nt5_ex.forest = forest_domain;
+ netlogon->data.nt5_ex.dns_domain = dns_domain;
+ netlogon->data.nt5_ex.pdc_dns_name = pdc_dns_name;
+ netlogon->data.nt5_ex.server_site = server_site;
+ netlogon->data.nt5_ex.client_site = client_site;
+ if (version & NETLOGON_NT_VERSION_5EX_WITH_IP) {
+ /* note that this is always a IPV4 address */
+ extra_flags = NETLOGON_NT_VERSION_5EX_WITH_IP;
+ netlogon->data.nt5_ex.sockaddr.sockaddr_family = 2;
+ netlogon->data.nt5_ex.sockaddr.pdc_ip = pdc_ip;
+ netlogon->data.nt5_ex.sockaddr.remaining = data_blob_talloc_zero(mem_ctx, 8);
+ }
+ netlogon->data.nt5_ex.server_type = server_type;
+ netlogon->data.nt5_ex.nt_version = NETLOGON_NT_VERSION_1|NETLOGON_NT_VERSION_5EX|extra_flags;
+ netlogon->data.nt5_ex.lmnt_token = 0xFFFF;
+ netlogon->data.nt5_ex.lm20_token = 0xFFFF;
+
+ } else if (version & NETLOGON_NT_VERSION_5) {
+ netlogon->ntver = NETLOGON_NT_VERSION_5;
+
+ /* could check if the user exists */
+ if (user_known) {
+ netlogon->data.nt5.command = LOGON_SAM_LOGON_RESPONSE;
+ } else {
+ netlogon->data.nt5.command = LOGON_SAM_LOGON_USER_UNKNOWN;
+ }
+ netlogon->data.nt5.pdc_name = pdc_name;
+ netlogon->data.nt5.user_name = user;
+ netlogon->data.nt5.domain_name = flatname;
+ netlogon->data.nt5.domain_uuid = domain_uuid;
+ netlogon->data.nt5.forest = forest_domain;
+ netlogon->data.nt5.dns_domain = dns_domain;
+ netlogon->data.nt5.pdc_dns_name = pdc_dns_name;
+ netlogon->data.nt5.pdc_ip = pdc_ip;
+ netlogon->data.nt5.server_type = server_type;
+ netlogon->data.nt5.nt_version = NETLOGON_NT_VERSION_1|NETLOGON_NT_VERSION_5;
+ netlogon->data.nt5.lmnt_token = 0xFFFF;
+ netlogon->data.nt5.lm20_token = 0xFFFF;
+
+ } else /* (version & NETLOGON_NT_VERSION_1) and all other cases */ {
+ netlogon->ntver = NETLOGON_NT_VERSION_1;
+ /* could check if the user exists */
+ if (user_known) {
+ netlogon->data.nt4.command = LOGON_SAM_LOGON_RESPONSE;
+ } else {
+ netlogon->data.nt4.command = LOGON_SAM_LOGON_USER_UNKNOWN;
+ }
+ netlogon->data.nt4.pdc_name = pdc_name;
+ netlogon->data.nt4.user_name = user;
+ netlogon->data.nt4.domain_name = flatname;
+ netlogon->data.nt4.nt_version = NETLOGON_NT_VERSION_1;
+ netlogon->data.nt4.lmnt_token = 0xFFFF;
+ netlogon->data.nt4.lm20_token = 0xFFFF;
+ }
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS parse_netlogon_request(struct ldb_parse_tree *tree,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *tmp_ctx,
+ const char **domain,
+ const char **host,
+ const char **user,
+ const char **domain_guid,
+ struct dom_sid **domain_sid,
+ int *acct_control,
+ int *version)
+{
+ unsigned int i;
+
+ *domain = NULL;
+ *host = NULL;
+ *user = NULL;
+ *domain_guid = NULL;
+ *domain_sid = NULL;
+ *acct_control = -1;
+ *version = -1;
+
+ if (tree->operation != LDB_OP_AND) goto failed;
+
+ /* extract the query elements */
+ for (i=0;i<tree->u.list.num_elements;i++) {
+ struct ldb_parse_tree *t = tree->u.list.elements[i];
+ if (t->operation != LDB_OP_EQUALITY) goto failed;
+ if (strcasecmp(t->u.equality.attr, "DnsDomain") == 0) {
+ *domain = talloc_strndup(tmp_ctx,
+ (const char *)t->u.equality.value.data,
+ t->u.equality.value.length);
+ }
+ if (strcasecmp(t->u.equality.attr, "Host") == 0) {
+ *host = talloc_strndup(tmp_ctx,
+ (const char *)t->u.equality.value.data,
+ t->u.equality.value.length);
+ }
+ if (strcasecmp(t->u.equality.attr, "DomainGuid") == 0) {
+ NTSTATUS enc_status;
+ struct GUID guid;
+ enc_status = ldap_decode_ndr_GUID(tmp_ctx,
+ t->u.equality.value, &guid);
+ if (NT_STATUS_IS_OK(enc_status)) {
+ *domain_guid = GUID_string(tmp_ctx, &guid);
+ }
+ }
+ if (strcasecmp(t->u.equality.attr, "DomainSid") == 0) {
+ enum ndr_err_code ndr_err;
+
+ *domain_sid = talloc(tmp_ctx, struct dom_sid);
+ if (*domain_sid == NULL) {
+ goto failed;
+ }
+ ndr_err = ndr_pull_struct_blob(&t->u.equality.value,
+ *domain_sid, *domain_sid,
+ (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(*domain_sid);
+ goto failed;
+ }
+ }
+ if (strcasecmp(t->u.equality.attr, "User") == 0) {
+ *user = talloc_strndup(tmp_ctx,
+ (const char *)t->u.equality.value.data,
+ t->u.equality.value.length);
+ }
+ if (strcasecmp(t->u.equality.attr, "NtVer") == 0 &&
+ t->u.equality.value.length == 4) {
+ *version = IVAL(t->u.equality.value.data, 0);
+ }
+ if (strcasecmp(t->u.equality.attr, "AAC") == 0 &&
+ t->u.equality.value.length == 4) {
+ *acct_control = IVAL(t->u.equality.value.data, 0);
+ }
+ }
+
+ if ((*domain == NULL) && (*domain_guid == NULL) && (*domain_sid == NULL)) {
+ *domain = lpcfg_dnsdomain(lp_ctx);
+ }
+
+ if (*version == -1) {
+ goto failed;
+ }
+
+ return NT_STATUS_OK;
+
+failed:
+ return NT_STATUS_UNSUCCESSFUL;
+}