r2878: add server sasl support

(there are a lot of clean ups following later, but the LDAP-BASIC test
 works :-)

metze
(This used to be commit 34fe29c04a76f2f53f27adcaf9be2dce8d177516)

1 files changed, 117 insertions, 3 deletions

diff --git a/source4/ldap_server/ldap_bind.c b/source4/ldap_server/ldap_bind.c
index d0e24bde29..3d9cd4b984 100644
--- a/source4/ldap_server/ldap_bind.c
+++ b/source4/ldap_server/ldap_bind.c
@@ -21,13 +21,13 @@
 #include "includes.h"
 
 
-NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
+static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
 {
 	struct ldap_BindRequest *req = &call->request.r.BindRequest;
 	struct ldapsrv_reply *reply;
 	struct ldap_BindResponse *resp;
 
-	DEBUG(10, ("BindRequest dn: %s\n",req->dn));
+	DEBUG(10, ("BindSimple dn: %s\n",req->dn));
 
 	reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
 	if (!reply) {
@@ -44,9 +44,123 @@ NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
 	return ldapsrv_queue_reply(call, reply);
 }
 
+static NTSTATUS ldapsrv_BindSASL(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;
+	NTSTATUS status = NT_STATUS_OK;
+	NTSTATUS sasl_status;
+	BOOL ret;
+
+	DEBUG(10, ("BindSASL dn: %s\n",req->dn));
+
+	if (!call->conn->gensec) {
+		call->conn->session_info = NULL;
+
+		status = gensec_server_start(call->conn, &call->conn->gensec);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
+			return status;
+		}
+
+		gensec_want_feature(call->conn->gensec, GENSEC_WANT_SIGN|GENSEC_WANT_SEAL);
+
+		status = gensec_start_mech_by_sasl_name(call->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)));
+			goto reply;
+		}
+	}
+
+reply:
+	reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
+	if (!reply) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	resp = &reply->msg.r.BindResponse;
+
+	if (NT_STATUS_IS_OK(status)) {
+		status = gensec_update(call->conn->gensec, reply,
+					req->creds.SASL.secblob, &resp->SASL.secblob);
+	}
+
+	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)) {
+		result = LDAP_SUCCESS;
+		errstr = NULL;
+	} else {
+		result = 49;
+		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;
+
+	sasl_status = status;
+	status = ldapsrv_queue_reply(call, reply);
+	if (!NT_STATUS_IS_OK(sasl_status) || !NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = ldapsrv_do_responses(call->conn);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	ret = ldapsrv_append_to_buf(&call->conn->sasl_out_buffer, call->conn->out_buffer.data, call->conn->out_buffer.length);
+	if (!ret) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	ldapsrv_consumed_from_buf(&call->conn->out_buffer, call->conn->out_buffer.length);
+
+	status = gensec_session_info(call->conn->gensec, &call->conn->session_info);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	//debug_session_info(0, 0, call->conn->session_info);
+
+	return status;
+}
+
+NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
+{
+	struct ldap_BindRequest *req = &call->request.r.BindRequest;
+	struct ldapsrv_reply *reply;
+	struct ldap_BindResponse *resp;
+
+	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 = 7;
+	resp->response.dn = NULL;
+	resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
+	resp->response.referral = NULL;
+	resp->SASL.secblob = data_blob(NULL, 0);
+
+	return ldapsrv_queue_reply(call, reply);
+}
+
 NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
 {
-/*	struct ldap_UnbindRequest *req = &call->request->r.UnbindRequest;*/
 	DEBUG(10, ("UnbindRequest\n"));
 	return NT_STATUS_OK;
 }