PAC Glue between Samba and the KDC
- Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
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 "kdc/kdc.h"
-#include "dsdb/common/flags.h"
+#include "../libds/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 "kdc/kdc.h"
+#include "param/param.h"
struct krb5_dh_moduli;
struct _krb5_krb_auth_data;
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)
{
- struct PAC_LOGON_INFO_CTR logon_info;
+ union PAC_INFO info;
struct netr_SamInfo3 *info3;
krb5_data pac_data;
NTSTATUS nt_status;
+ enum ndr_err_code ndr_err;
DATA_BLOB pac_out;
krb5_error_code ret;
- ZERO_STRUCT(logon_info);
+ ZERO_STRUCT(info);
nt_status = auth_convert_server_info_saminfo3(mem_ctx, server_info, &info3);
if (!NT_STATUS_IS_OK(nt_status)) {
return EINVAL;
}
- logon_info.info = talloc_zero(mem_ctx, struct PAC_LOGON_INFO);
+ info.logon_info.info = talloc_zero(mem_ctx, struct PAC_LOGON_INFO);
if (!mem_ctx) {
return ENOMEM;
}
- logon_info.info->info3 = *info3;
+ info.logon_info.info->info3 = *info3;
- nt_status = ndr_push_struct_blob(&pac_out, mem_ctx, &logon_info,
- (ndr_push_flags_fn_t)ndr_push_PAC_LOGON_INFO_CTR);
- if (!NT_STATUS_IS_OK(nt_status)) {
+ 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;
}
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");
+ struct hdb_ldb_private *p = talloc_get_type(client->ctx, struct hdb_ldb_private);
+ TALLOC_CTX *mem_ctx = talloc_named(p, 0, "samba_get_pac context");
unsigned int userAccountControl;
if (!mem_ctx) {
}
/* The user account may be set not to want the PAC */
- userAccountControl = ldb_msg_find_attr_as_uint(private->msg, "userAccountControl", 0);
+ userAccountControl = ldb_msg_find_attr_as_uint(p->msg, "userAccountControl", 0);
if (userAccountControl & UF_NO_AUTH_DATA_REQUIRED) {
*pac = NULL;
return 0;
}
- nt_status = authsam_make_server_info(mem_ctx, private->samdb,
- private->msg,
- private->realm_ref_msg,
+ nt_status = authsam_make_server_info(mem_ctx, p->samdb,
+ lp_netbios_name(p->lp_ctx),
+ lp_sam_name(p->lp_ctx),
+ p->realm_dn,
+ p->msg,
data_blob(NULL, 0),
data_blob(NULL, 0),
&server_info);
return ENOMEM;
}
- ret = make_pac(context, mem_ctx, server_info, pac);
+ ret = make_pac(context, mem_ctx, p->iconv_convenience, server_info, pac);
talloc_free(mem_ctx);
return ret;
struct hdb_entry_ex *client,
struct hdb_entry_ex *server, krb5_pac *pac)
{
- NTSTATUS nt_status;
krb5_error_code ret;
unsigned int userAccountControl;
- struct hdb_ldb_private *private = talloc_get_type(server->ctx, struct hdb_ldb_private);
- krb5_data k5pac_in;
- DATA_BLOB pac_in;
+ struct hdb_ldb_private *p = talloc_get_type(server->ctx, struct hdb_ldb_private);
- struct PAC_LOGON_INFO_CTR logon_info;
- union netr_Validation validation;
struct auth_serversupplied_info *server_info_out;
- TALLOC_CTX *mem_ctx = talloc_named(private, 0, "samba_get_pac context");
+ TALLOC_CTX *mem_ctx = talloc_named(p, 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);
+ userAccountControl = ldb_msg_find_attr_as_uint(p->msg, "userAccountControl", 0);
if (userAccountControl & UF_NO_AUTH_DATA_REQUIRED) {
+ talloc_free(mem_ctx);
*pac = NULL;
return 0;
}
- ret = krb5_pac_get_buffer(context, *pac, PAC_TYPE_LOGON_INFO, &k5pac_in);
- if (ret != 0) {
- return ret;
- }
+ ret = kerberos_pac_to_server_info(mem_ctx, p->iconv_convenience,
+ *pac, context, &server_info_out);
- pac_in = data_blob_talloc(mem_ctx, k5pac_in.data, k5pac_in.length);
- krb5_data_free(&k5pac_in);
- if (!pac_in.data) {
- talloc_free(mem_ctx);
- return ENOMEM;
- }
-
- nt_status = ndr_pull_struct_blob(&pac_in, mem_ctx, &logon_info,
- (ndr_pull_flags_fn_t)ndr_pull_PAC_LOGON_INFO_CTR);
- if (!NT_STATUS_IS_OK(nt_status) || !logon_info.info) {
- talloc_free(mem_ctx);
- DEBUG(0,("can't parse the PAC LOGON_INFO\n"));
- return EINVAL;
- }
+ /* We will compleatly regenerate this pac */
+ krb5_pac_free(context, *pac);
- /* Pull this right into the normal auth sysstem structures */
- validation.sam3 = &logon_info.info->info3;
- nt_status = make_server_info_netlogon_validation(mem_ctx,
- "",
- 3, &validation,
- &server_info_out);
- if (!NT_STATUS_IS_OK(nt_status)) {
+ if (ret) {
talloc_free(mem_ctx);
- return ENOMEM;
+ return ret;
}
- /* We will compleatly regenerate this pac */
- krb5_pac_free(context, *pac);
-
- ret = make_pac(context, mem_ctx, server_info_out, pac);
+ ret = make_pac(context, mem_ctx, p->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_context context,
+ krb5_kdc_configuration *config,
+ hdb_entry_ex *client_ex, const char *client_name,
+ hdb_entry_ex *server_ex, const char *server_name,
+ 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;
+ TALLOC_CTX *tmp_ctx;
+ struct hdb_ldb_private *p;
+ char *workstation = NULL;
HostAddresses *addresses = req->req_body.addresses;
int i;
+ bool password_change;
+
+ tmp_ctx = talloc_new(client_ex->ctx);
+ p = talloc_get_type(client_ex->ctx, struct hdb_ldb_private);
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) {
}
}
+ password_change = (server_ex && server_ex->entry.flags.change_pw);
+
+ /* we allow all kinds of trusts here */
nt_status = authsam_account_ok(tmp_ctx,
- private->samdb,
+ p->samdb,
MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
- private->msg,
- private->realm_ref_msg,
+ p->realm_dn,
+ p->msg,
workstation,
- name);
- free(name);
-
- /* TODO: Need a more complete mapping of NTSTATUS to krb5kdc errors */
-
- if (!NT_STATUS_IS_OK(nt_status)) {
- return KRB5KDC_ERR_POLICY;
+ client_name, true, password_change);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ /* Now do the standard Heimdal check */
+ ret = kdc_check_flags(context, config,
+ client_ex, client_name,
+ server_ex, server_name,
+ req->msg_type == krb_as_req);
+ } else {
+ 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 0;
+
+ return ret;
}
git.samba.org / ira / wip.git / blobdiff