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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "ldap_server/ldap_server.h"
+#include "auth/auth.h"
+#include "smbd/service.h"
+#include "lib/ldb/include/ldb.h"
+#include "lib/ldb/include/ldb_errors.h"
+#include "dsdb/samdb/samdb.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_tstream.h"
+#include "param/param.h"
+#include "../lib/util/tevent_ntstatus.h"
+static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
+{
+ struct ldap_BindRequest *req = &call->request->r.BindRequest;
+ struct ldapsrv_reply *reply;
+ struct ldap_BindResponse *resp;
+
+ int result;
+ const char *errstr;
+ const char *nt4_domain, *nt4_account;
+
+ struct auth_session_info *session_info;
+
+ NTSTATUS status;
+
+ DEBUG(10, ("BindSimple dn: %s\n",req->dn));
+
+ status = crack_auto_name_to_nt4_name(call, call->conn->connection->event.ctx, call->conn->lp_ctx, req->dn, &nt4_domain, &nt4_account);
+ if (NT_STATUS_IS_OK(status)) {
+ status = authenticate_username_pw(call,
+ call->conn->connection->event.ctx,
+ call->conn->connection->msg_ctx,
+ call->conn->lp_ctx,
+ nt4_domain, nt4_account,
+ req->creds.password,
+ &session_info);
+ }
+
+ reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
+ if (!reply) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (NT_STATUS_IS_OK(status)) {
+ result = LDAP_SUCCESS;
+ errstr = NULL;
+
+ talloc_unlink(call->conn, call->conn->session_info);
+ call->conn->session_info = session_info;
+ talloc_steal(call->conn, session_info);
+
+ /* don't leak the old LDB */
+ talloc_unlink(call->conn, call->conn->ldb);
+
+ status = ldapsrv_backend_Init(call->conn);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply, "Simple Bind: Failed to advise ldb new credentials: %s", nt_errstr(status));
+ }
+ } else {
+ status = auth_nt_status_squash(status);
+
+ result = LDAP_INVALID_CREDENTIALS;
+ errstr = talloc_asprintf(reply, "Simple Bind Failed: %s", nt_errstr(status));
+ }
+
+ resp = &reply->msg->r.BindResponse;
+ resp->response.resultcode = result;
+ resp->response.errormessage = errstr;
+ resp->response.dn = NULL;
+ resp->response.referral = NULL;
+ resp->SASL.secblob = NULL;
+
+ ldapsrv_queue_reply(call, reply);
+ return NT_STATUS_OK;
+}
+
+struct ldapsrv_sasl_postprocess_context {
+ struct ldapsrv_connection *conn;
+ struct tstream_context *sasl;
+};
+
+struct ldapsrv_sasl_postprocess_state {
+ uint8_t dummy;
+};
+
+static struct tevent_req *ldapsrv_sasl_postprocess_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ void *private_data)
+{
+ struct ldapsrv_sasl_postprocess_context *context =
+ talloc_get_type_abort(private_data,
+ struct ldapsrv_sasl_postprocess_context);
+ struct tevent_req *req;
+ struct ldapsrv_sasl_postprocess_state *state;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct ldapsrv_sasl_postprocess_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ TALLOC_FREE(context->conn->sockets.sasl);
+ context->conn->sockets.sasl = talloc_move(context->conn, &context->sasl);
+ context->conn->sockets.active = context->conn->sockets.sasl;
+
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+}
+
+static NTSTATUS ldapsrv_sasl_postprocess_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+static NTSTATUS ldapsrv_BindSASL(struct ldapsrv_call *call)
+{
+ struct ldap_BindRequest *req = &call->request->r.BindRequest;
+ struct ldapsrv_reply *reply;
+ struct ldap_BindResponse *resp;
+ struct ldapsrv_connection *conn;
+ int result = 0;
+ const char *errstr=NULL;
+ NTSTATUS status = NT_STATUS_OK;
+
+ DEBUG(10, ("BindSASL dn: %s\n",req->dn));
+
+ reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
+ if (!reply) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ resp = &reply->msg->r.BindResponse;
+
+ conn = call->conn;
+
+ /*
+ * TODO: a SASL bind with a different mechanism
+ * should cancel an inprogress SASL bind.
+ * (see RFC 4513)
+ */
+
+ if (!conn->gensec) {
+ conn->session_info = NULL;
+
+ status = samba_server_gensec_start(conn,
+ conn->connection->event.ctx,
+ conn->connection->msg_ctx,
+ conn->lp_ctx,
+ conn->server_credentials,
+ "ldap",
+ &conn->gensec);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply, "SASL: Failed to start authentication system: %s",
+ nt_errstr(status));
+ } else {
+
+ gensec_want_feature(conn->gensec, GENSEC_FEATURE_SIGN);
+ gensec_want_feature(conn->gensec, GENSEC_FEATURE_SEAL);
+ gensec_want_feature(conn->gensec, GENSEC_FEATURE_ASYNC_REPLIES);
+
+ status = gensec_start_mech_by_sasl_name(conn->gensec, req->creds.SASL.mechanism);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to start GENSEC SASL[%s] server code: %s\n",
+ req->creds.SASL.mechanism, nt_errstr(status)));
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to start authentication backend: %s",
+ req->creds.SASL.mechanism, nt_errstr(status));
+ }
+ }
+ }
+
+ if (NT_STATUS_IS_OK(status)) {
+ DATA_BLOB input = data_blob(NULL, 0);
+ DATA_BLOB output = data_blob(NULL, 0);
+
+ if (req->creds.SASL.secblob) {
+ input = *req->creds.SASL.secblob;
+ }
+
+ status = gensec_update(conn->gensec, reply,
+ input, &output);
+
+ /* Windows 2000 mmc doesn't like secblob == NULL and reports a decoding error */
+ resp->SASL.secblob = talloc(reply, DATA_BLOB);
+ NT_STATUS_HAVE_NO_MEMORY(resp->SASL.secblob);
+ *resp->SASL.secblob = output;
+ } else {
+ resp->SASL.secblob = NULL;
+ }
+
+ if (NT_STATUS_EQUAL(NT_STATUS_MORE_PROCESSING_REQUIRED, status)) {
+ result = LDAP_SASL_BIND_IN_PROGRESS;
+ errstr = NULL;
+ } else if (NT_STATUS_IS_OK(status)) {
+ struct auth_session_info *old_session_info=NULL;
+ struct ldapsrv_sasl_postprocess_context *context = NULL;
+
+ result = LDAP_SUCCESS;
+ errstr = NULL;
+
+ if (gensec_have_feature(conn->gensec, GENSEC_FEATURE_SIGN) ||
+ gensec_have_feature(conn->gensec, GENSEC_FEATURE_SEAL)) {
+
+ context = talloc(call, struct ldapsrv_sasl_postprocess_context);
+
+ if (!context) {
+ status = NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ if (context && conn->sockets.tls) {
+ TALLOC_FREE(context);
+ status = NT_STATUS_NOT_SUPPORTED;
+ result = LDAP_UNWILLING_TO_PERFORM;
+ errstr = talloc_asprintf(reply,
+ "SASL:[%s]: Sign or Seal are not allowed if TLS is used",
+ req->creds.SASL.mechanism);
+ }
+
+ if (context) {
+ context->conn = conn;
+ status = gensec_create_tstream(context,
+ context->conn->gensec,
+ context->conn->sockets.raw,
+ &context->sasl);
+ }
+
+ if (result != LDAP_SUCCESS) {
+ conn->session_info = old_session_info;
+ } else if (!NT_STATUS_IS_OK(status)) {
+ conn->session_info = old_session_info;
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply,
+ "SASL:[%s]: Failed to setup SASL socket: %s",
+ req->creds.SASL.mechanism, nt_errstr(status));
+ } else {
+
+ old_session_info = conn->session_info;
+ conn->session_info = NULL;
+ status = gensec_session_info(conn->gensec, &conn->session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ conn->session_info = old_session_info;
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply,
+ "SASL:[%s]: Failed to get session info: %s",
+ req->creds.SASL.mechanism, nt_errstr(status));
+ } else {
+ talloc_unlink(conn, old_session_info);
+ talloc_steal(conn, conn->session_info);
+
+ /* don't leak the old LDB */
+ talloc_unlink(conn, conn->ldb);
+
+ status = ldapsrv_backend_Init(conn);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ result = LDAP_OPERATIONS_ERROR;
+ errstr = talloc_asprintf(reply,
+ "SASL:[%s]: Failed to advise samdb of new credentials: %s",
+ req->creds.SASL.mechanism,
+ nt_errstr(status));
+ }
+ }
+ }
+
+ if (NT_STATUS_IS_OK(status) && context) {
+ call->postprocess_send = ldapsrv_sasl_postprocess_send;
+ call->postprocess_recv = ldapsrv_sasl_postprocess_recv;
+ call->postprocess_private = context;
+ }
+ } else {
+ status = auth_nt_status_squash(status);
+ if (result == 0) {
+ result = LDAP_INVALID_CREDENTIALS;
+ errstr = talloc_asprintf(reply, "SASL:[%s]: %s", req->creds.SASL.mechanism, nt_errstr(status));
+ }
+ }
+
+ resp->response.resultcode = result;
+ resp->response.dn = NULL;
+ resp->response.errormessage = errstr;
+ resp->response.referral = NULL;
+
+ ldapsrv_queue_reply(call, reply);
+ return NT_STATUS_OK;
+}
NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
{
- struct ldap_BindRequest *req = &call->request.r.BindRequest;
+ struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
- DEBUG(10, ("BindRequest dn: %s\n",req->dn));
+ /*
+ * TODO: we should fail the bind request
+ * if there're any pending requests.
+ *
+ * also a simple bind should cancel an
+ * inprogress SASL bind.
+ * (see RFC 4513)
+ */
+ switch (req->mechanism) {
+ case LDAP_AUTH_MECH_SIMPLE:
+ return ldapsrv_BindSimple(call);
+ case LDAP_AUTH_MECH_SASL:
+ return ldapsrv_BindSASL(call);
+ }
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
- resp = &reply->msg.r.BindResponse;
- resp->response.resultcode = 0;
+ resp = &reply->msg->r.BindResponse;
+ resp->response.resultcode = 7;
resp->response.dn = NULL;
- resp->response.errormessage = NULL;
+ resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
resp->response.referral = NULL;
- resp->SASL.secblob = data_blob(NULL, 0);
+ resp->SASL.secblob = NULL;
- return ldapsrv_queue_reply(call, reply);
+ ldapsrv_queue_reply(call, reply);
+ return NT_STATUS_OK;
}
NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
{
-/* struct ldap_UnbindRequest *req = &call->request->r.UnbindRequest;*/
DEBUG(10, ("UnbindRequest\n"));
return NT_STATUS_OK;
}
git.samba.org / mat / samba.git / blobdiff