libcli/cldap: Add utility to create netlogon filter

This utility is splitted of from cldap_netlogon_send.

Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Nadezhda Ivanova <nivanova@symas.com>

2 files changed, 52 insertions, 40 deletions

diff --git a/libcli/cldap/cldap.c b/libcli/cldap/cldap.c
index 24ce39fefb6..e54309190a0 100644
--- a/libcli/cldap/cldap.c
+++ b/libcli/cldap/cldap.c
@@ -882,81 +882,91 @@ struct cldap_netlogon_state {
 	struct cldap_search search;
 };
 
-static void cldap_netlogon_state_done(struct tevent_req *subreq);
-/*
-  queue a cldap netlogon for send
-*/
-struct tevent_req *cldap_netlogon_send(TALLOC_CTX *mem_ctx,
-				       struct tevent_context *ev,
-				       struct cldap_socket *cldap,
-				       const struct cldap_netlogon *io)
+char *cldap_netlogon_create_filter(TALLOC_CTX *mem_ctx,
+				   const struct cldap_netlogon *io)
 {
-	struct tevent_req *req, *subreq;
-	struct cldap_netlogon_state *state;
 	char *filter;
-	static const char * const attr[] = { "NetLogon", NULL };
 
-	req = tevent_req_create(mem_ctx, &state,
-				struct cldap_netlogon_state);
-	if (!req) {
+	filter = talloc_asprintf(mem_ctx, "(&(NtVer=%s)",
+				 ldap_encode_ndr_uint32(mem_ctx, io->in.version));
+	if (filter == NULL)
 		return NULL;
-	}
 
-	filter = talloc_asprintf(state, "(&(NtVer=%s)", 
-				 ldap_encode_ndr_uint32(state, io->in.version));
-	if (tevent_req_nomem(filter, req)) {
-		goto post;
-	}
 	if (io->in.user) {
 		filter = talloc_asprintf_append_buffer(filter, "(User=%s)", io->in.user);
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	if (io->in.host) {
 		filter = talloc_asprintf_append_buffer(filter, "(Host=%s)", io->in.host);
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	if (io->in.realm) {
 		filter = talloc_asprintf_append_buffer(filter, "(DnsDomain=%s)", io->in.realm);
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	if (io->in.acct_control != -1) {
 		filter = talloc_asprintf_append_buffer(filter, "(AAC=%s)", 
-						ldap_encode_ndr_uint32(state, io->in.acct_control));
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+						ldap_encode_ndr_uint32(mem_ctx, io->in.acct_control));
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	if (io->in.domain_sid) {
-		struct dom_sid *sid = dom_sid_parse_talloc(state, io->in.domain_sid);
-		if (tevent_req_nomem(sid, req)) {
-			goto post;
+		struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, io->in.domain_sid);
+		if (filter == NULL) {
+			return NULL;
 		}
 		filter = talloc_asprintf_append_buffer(filter, "(domainSid=%s)",
-						ldap_encode_ndr_dom_sid(state, sid));
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+						ldap_encode_ndr_dom_sid(mem_ctx, sid));
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	if (io->in.domain_guid) {
 		struct GUID guid;
 		NTSTATUS status;
 		status = GUID_from_string(io->in.domain_guid, &guid);
-		if (tevent_req_nterror(req, status)) {
-			goto post;
+		if (filter == NULL) {
+			return NULL;
 		}
 		filter = talloc_asprintf_append_buffer(filter, "(DomainGuid=%s)",
-						ldap_encode_ndr_GUID(state, &guid));
-		if (tevent_req_nomem(filter, req)) {
-			goto post;
+						ldap_encode_ndr_GUID(mem_ctx, &guid));
+		if (filter == NULL) {
+			return NULL;
 		}
 	}
 	filter = talloc_asprintf_append_buffer(filter, ")");
+
+	return filter;
+}
+
+static void cldap_netlogon_state_done(struct tevent_req *subreq);
+/*
+  queue a cldap netlogon for send
+*/
+struct tevent_req *cldap_netlogon_send(TALLOC_CTX *mem_ctx,
+				       struct tevent_context *ev,
+				       struct cldap_socket *cldap,
+				       const struct cldap_netlogon *io)
+{
+	struct tevent_req *req, *subreq;
+	struct cldap_netlogon_state *state;
+	char *filter;
+	static const char * const attr[] = { "NetLogon", NULL };
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cldap_netlogon_state);
+	if (!req) {
+		return NULL;
+	}
+
+	filter = cldap_netlogon_create_filter(state, io);
 	if (tevent_req_nomem(filter, req)) {
 		goto post;
 	}
diff --git a/libcli/cldap/cldap.h b/libcli/cldap/cldap.h
index 0bc9454f80f..cd76fee60f3 100644
--- a/libcli/cldap/cldap.h
+++ b/libcli/cldap/cldap.h
@@ -123,6 +123,8 @@ NTSTATUS cldap_netlogon_recv(struct tevent_req *req,
 NTSTATUS cldap_netlogon(struct cldap_socket *cldap,
 			TALLOC_CTX *mem_ctx,
 			struct cldap_netlogon *io);
+char *cldap_netlogon_create_filter(TALLOC_CTX *mem_ctx,
+				   const struct cldap_netlogon *io);
 
 NTSTATUS cldap_netlogon_reply(struct cldap_socket *cldap,
 			      uint32_t message_id,