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
+ 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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "dsdb/common/flags.h"
+#include "lib/ldb/include/ldb.h"
+#include "librpc/gen_ndr/ndr_krb5pac.h"
+#include "librpc/gen_ndr/krb5pac.h"
+#include "auth/auth.h"
+#include "auth/auth_sam.h"
+#include "auth/auth_sam_reply.h"
+#include "param/param.h"
#include "kdc/kdc.h"
-#include "kdc/pac-glue.h" /* Ensure we don't get this prototype wrong, as that could be painful */
-
- krb5_error_code samba_get_pac(krb5_context context,
- struct krb5_kdc_configuration *config,
- krb5_principal client,
- krb5_keyblock *krbtgt_keyblock,
- krb5_keyblock *server_keyblock,
- krb5_data *pac)
+
+struct krb5_dh_moduli;
+struct _krb5_krb_auth_data;
+
+krb5_error_code samba_kdc_plugin_init(krb5_context context, void **ptr)
{
- krb5_error_code ret;
+ *ptr = NULL;
+ return 0;
+}
+
+void samba_kdc_plugin_fini(void *ptr)
+{
+ return;
+}
+
+static krb5_error_code make_pac(krb5_context context,
+ TALLOC_CTX *mem_ctx,
+ struct smb_iconv_convenience *iconv_convenience,
+ struct auth_serversupplied_info *server_info,
+ krb5_pac *pac)
+{
+ union PAC_INFO info;
+ struct netr_SamInfo3 *info3;
+ krb5_data pac_data;
NTSTATUS nt_status;
- struct auth_serversupplied_info *server_info;
- char *username, *p;
- const char *realm;
- DATA_BLOB tmp_blob;
- TALLOC_CTX *mem_ctx = talloc_named(config, 0, "samba_get_pac context");
+ enum ndr_err_code ndr_err;
+ DATA_BLOB pac_out;
+ krb5_error_code ret;
+
+ ZERO_STRUCT(info);
+
+ nt_status = auth_convert_server_info_saminfo3(mem_ctx, server_info, &info3);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("Getting Samba info failed: %s\n", nt_errstr(nt_status)));
+ return EINVAL;
+ }
+
+ info.logon_info.info = talloc_zero(mem_ctx, struct PAC_LOGON_INFO);
if (!mem_ctx) {
return ENOMEM;
}
- ret = krb5_unparse_name(context, client, &username);
+ info.logon_info.info->info3 = *info3;
+
+ ndr_err = ndr_push_union_blob(&pac_out, mem_ctx, iconv_convenience, &info,
+ PAC_TYPE_LOGON_INFO,
+ (ndr_push_flags_fn_t)ndr_push_PAC_INFO);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ nt_status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(1, ("PAC (presig) push failed: %s\n", nt_errstr(nt_status)));
+ return EINVAL;
+ }
+ ret = krb5_data_copy(&pac_data, pac_out.data, pac_out.length);
if (ret != 0) {
- krb5_set_error_string(context, "get pac: could not parse principal");
- krb5_warnx(context, "get pac: could not parse principal");
- talloc_free(mem_ctx);
return ret;
}
- /* parse the principal name */
- realm = krb5_principal_get_realm(context, client);
- username = talloc_strdup(mem_ctx, username);
- p = strchr(username, '@');
- if (p) {
- p[0] = '\0';
+ ret = krb5_pac_init(context, pac);
+ if (ret != 0) {
+ krb5_data_free(&pac_data);
+ return ret;
}
+ ret = krb5_pac_add_buffer(context, *pac, PAC_TYPE_LOGON_INFO, &pac_data);
+ krb5_data_free(&pac_data);
+ if (ret != 0) {
+ return ret;
+ }
+
+ return ret;
+}
+
+/* Given the right private pointer from hdb_ldb, get a PAC from the attached ldb messages */
+krb5_error_code samba_kdc_get_pac(void *priv,
+ krb5_context context,
+ struct hdb_entry_ex *client,
+ krb5_pac *pac)
+{
+ krb5_error_code ret;
+ NTSTATUS nt_status;
+ struct auth_serversupplied_info *server_info;
+ struct hdb_ldb_private *private = talloc_get_type(client->ctx, struct hdb_ldb_private);
+ TALLOC_CTX *mem_ctx = talloc_named(private, 0, "samba_get_pac context");
+ unsigned int userAccountControl;
+
+ if (!mem_ctx) {
+ return ENOMEM;
+ }
+
+ /* The user account may be set not to want the PAC */
+ userAccountControl = ldb_msg_find_attr_as_uint(private->msg, "userAccountControl", 0);
+ if (userAccountControl & UF_NO_AUTH_DATA_REQUIRED) {
+ *pac = NULL;
+ return 0;
+ }
- nt_status = sam_get_server_info(mem_ctx, username, realm,
- data_blob(NULL, 0), data_blob(NULL, 0),
- &server_info);
+ nt_status = authsam_make_server_info(mem_ctx, private->samdb,
+ private->netbios_name,
+ private->msg,
+ private->realm_ref_msg,
+ data_blob(NULL, 0),
+ data_blob(NULL, 0),
+ &server_info);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("Getting user info for PAC failed: %s\n",
nt_errstr(nt_status)));
- return EINVAL;
+ return ENOMEM;
}
- ret = kerberos_create_pac(mem_ctx, server_info,
- context,
- krbtgt_keyblock,
- server_keyblock,
- &tmp_blob);
+ ret = make_pac(context, mem_ctx, private->iconv_convenience, server_info, pac);
+
+ talloc_free(mem_ctx);
+ return ret;
+}
+
+/* Resign (and reform, including possibly new groups) a PAC */
+
+krb5_error_code samba_kdc_reget_pac(void *priv, krb5_context context,
+ const krb5_principal client_principal,
+ struct hdb_entry_ex *client,
+ struct hdb_entry_ex *server, krb5_pac *pac)
+{
+ krb5_error_code ret;
+
+ unsigned int userAccountControl;
+
+ struct hdb_ldb_private *private = talloc_get_type(server->ctx, struct hdb_ldb_private);
+
+ struct auth_serversupplied_info *server_info_out;
+
+ TALLOC_CTX *mem_ctx = talloc_named(private, 0, "samba_get_pac context");
+
+ if (!mem_ctx) {
+ return ENOMEM;
+ }
+
+ /* The service account may be set not to want the PAC */
+ userAccountControl = ldb_msg_find_attr_as_uint(private->msg, "userAccountControl", 0);
+ if (userAccountControl & UF_NO_AUTH_DATA_REQUIRED) {
+ talloc_free(mem_ctx);
+ *pac = NULL;
+ return 0;
+ }
+
+ ret = kerberos_pac_to_server_info(mem_ctx, private->iconv_convenience,
+ *pac, context, &server_info_out);
+
+ /* We will compleatly regenerate this pac */
+ krb5_pac_free(context, *pac);
if (ret) {
- DEBUG(1, ("PAC encoding failed: %s\n",
- smb_get_krb5_error_message(context, ret, mem_ctx)));
talloc_free(mem_ctx);
return ret;
}
- ret = krb5_data_copy(pac, tmp_blob.data, tmp_blob.length);
+ ret = make_pac(context, mem_ctx, private->iconv_convenience, server_info_out, pac);
+
talloc_free(mem_ctx);
return ret;
}
+
+static void samba_kdc_build_edata_reply(TALLOC_CTX *tmp_ctx, krb5_data *e_data,
+ NTSTATUS nt_status)
+{
+ PA_DATA pa;
+ unsigned char *buf;
+ size_t len;
+ krb5_error_code ret = 0;
+
+ if (!e_data)
+ return;
+
+ pa.padata_type = KRB5_PADATA_PW_SALT;
+ pa.padata_value.length = 12;
+ pa.padata_value.data = malloc(pa.padata_value.length);
+ if (!pa.padata_value.data) {
+ e_data->length = 0;
+ e_data->data = NULL;
+ return;
+ }
+
+ SIVAL(pa.padata_value.data, 0, NT_STATUS_V(nt_status));
+ SIVAL(pa.padata_value.data, 4, 0);
+ SIVAL(pa.padata_value.data, 8, 1);
+
+ ASN1_MALLOC_ENCODE(PA_DATA, buf, len, &pa, &len, ret);
+ free(pa.padata_value.data);
+
+ e_data->data = buf;
+ e_data->length = len;
+
+ return;
+}
+
+/* Given an hdb entry (and in particular it's private member), consult
+ * the account_ok routine in auth/auth_sam.c for consistancy */
+
+
+krb5_error_code samba_kdc_check_client_access(void *priv,
+ krb5_context context, hdb_entry_ex *entry_ex,
+ KDC_REQ *req,
+ krb5_data *e_data)
+{
+ krb5_error_code ret;
+ NTSTATUS nt_status;
+ TALLOC_CTX *tmp_ctx = talloc_new(entry_ex->ctx);
+ struct hdb_ldb_private *private = talloc_get_type(entry_ex->ctx, struct hdb_ldb_private);
+ char *name, *workstation = NULL;
+ HostAddresses *addresses = req->req_body.addresses;
+ int i;
+
+ if (!tmp_ctx) {
+ return ENOMEM;
+ }
+
+ ret = krb5_unparse_name(context, entry_ex->entry.principal, &name);
+ if (ret != 0) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+
+ if (addresses) {
+ for (i=0; i < addresses->len; i++) {
+ if (addresses->val->addr_type == KRB5_ADDRESS_NETBIOS) {
+ workstation = talloc_strndup(tmp_ctx, addresses->val->address.data, MIN(addresses->val->address.length, 15));
+ if (workstation) {
+ break;
+ }
+ }
+ }
+ }
+
+ /* Strip space padding */
+ if (workstation) {
+ i = MIN(strlen(workstation), 15);
+ for (; i > 0 && workstation[i - 1] == ' '; i--) {
+ workstation[i - 1] = '\0';
+ }
+ }
+
+ nt_status = authsam_account_ok(tmp_ctx,
+ private->samdb,
+ MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
+ private->msg,
+ private->realm_ref_msg,
+ workstation,
+ name);
+ free(name);
+
+ if (NT_STATUS_IS_OK(nt_status))
+ return 0;
+
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_MUST_CHANGE))
+ ret = KRB5KDC_ERR_KEY_EXPIRED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_EXPIRED))
+ ret = KRB5KDC_ERR_KEY_EXPIRED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_EXPIRED))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_DISABLED))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_LOGON_HOURS))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_LOCKED_OUT))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_WORKSTATION))
+ ret = KRB5KDC_ERR_POLICY;
+ else
+ ret = KRB5KDC_ERR_POLICY;
+
+ samba_kdc_build_edata_reply(tmp_ctx, e_data, nt_status);
+
+ return ret;
+}
+
git.samba.org / kai / samba.git / blobdiff