[Minor] Fix some more issues

Found by: coverity scan

5 files changed, 35 insertions, 7 deletions

diff --git a/src/controller.c b/src/controller.c
index a34bb6034..34685b92e 100644
--- a/src/controller.c
+++ b/src/controller.c
@@ -349,6 +349,9 @@ check_uncached:
 			/* We have some unknown salt here */
 			msg_info_ctx ("incorrect key: %z, while %z expected",
 					key_len, pbkdf->key_len);
+			g_free (salt_decoded);
+			g_free (key_decoded); /* valid even if key_decoded == NULL */
+
 			return FALSE;
 		}
 
@@ -1357,6 +1360,7 @@ rspamd_controller_handle_graph (
 	rspamd_controller_send_ucl (conn_ent, res);
 	ucl_object_unref (res);
 	g_free (acc);
+	g_free (rrd_result);
 
 	return 0;
 }
diff --git a/src/fuzzy_storage.c b/src/fuzzy_storage.c
index d710de172..26950bbc9 100644
--- a/src/fuzzy_storage.c
+++ b/src/fuzzy_storage.c
@@ -1694,6 +1694,7 @@ rspamd_fuzzy_storage_sync (struct rspamd_main *rspamd_main,
 	struct rspamd_control_reply rep;
 
 	rep.reply.fuzzy_sync.status = 0;
+	rep.type = RSPAMD_CONTROL_FUZZY_SYNC;
 
 	if (ctx->backend && worker->index == 0) {
 		rspamd_fuzzy_process_updates_queue (ctx, local_db_name, FALSE);
@@ -1734,8 +1735,8 @@ rspamd_fuzzy_storage_reload (struct rspamd_main *rspamd_main,
 			worker->cf->options, rspamd_main->cfg,
 			&err)) == NULL) {
 		msg_err ("cannot open backend after reload: %e", err);
-		g_error_free (err);
 		rep.reply.reload.status = err->code;
+		g_error_free (err);
 	}
 	else {
 		rep.reply.reload.status = 0;
@@ -1898,10 +1899,16 @@ rspamd_fuzzy_stat_to_ucl (struct rspamd_fuzzy_storage_ctx *ctx, gboolean ip_stat
 static int
 lua_fuzzy_add_pre_handler (lua_State *L)
 {
-	struct rspamd_worker *wrk = *(struct rspamd_worker **)
+	struct rspamd_worker *wrk, **pwrk = (struct rspamd_worker **)
 			rspamd_lua_check_udata (L, 1, "rspamd{worker}");
 	struct rspamd_fuzzy_storage_ctx *ctx;
 
+	if (!pwrk) {
+		return luaL_error (L, "invalid arguments, worker + function are expected");
+	}
+
+	wrk = *pwrk;
+
 	if (wrk && lua_isfunction (L, 2)) {
 		ctx = (struct rspamd_fuzzy_storage_ctx *)wrk->ctx;
 
@@ -1923,10 +1930,16 @@ lua_fuzzy_add_pre_handler (lua_State *L)
 static int
 lua_fuzzy_add_post_handler (lua_State *L)
 {
-	struct rspamd_worker *wrk = *(struct rspamd_worker **)
+	struct rspamd_worker *wrk, **pwrk = (struct rspamd_worker **)
 			rspamd_lua_check_udata (L, 1, "rspamd{worker}");
 	struct rspamd_fuzzy_storage_ctx *ctx;
 
+	if (!pwrk) {
+		return luaL_error (L, "invalid arguments, worker + function are expected");
+	}
+
+	wrk = *pwrk;
+
 	if (wrk && lua_isfunction (L, 2)) {
 		ctx = (struct rspamd_fuzzy_storage_ctx *)wrk->ctx;
 
diff --git a/src/libmime/archives.c b/src/libmime/archives.c
index 467f9c021..8ce767ce1 100644
--- a/src/libmime/archives.c
+++ b/src/libmime/archives.c
@@ -1410,9 +1410,8 @@ rspamd_7zip_read_archive_props (struct rspamd_task *task,
 	 * }
 	 */
 
-	proptype = *p;
-
 	if (p != NULL) {
+		proptype = *p;
 		SZ_SKIP_BYTES(1);
 
 		while (proptype != 0) {
diff --git a/src/libserver/cfg_rcl.c b/src/libserver/cfg_rcl.c
index 47d487ee0..465503141 100644
--- a/src/libserver/cfg_rcl.c
+++ b/src/libserver/cfg_rcl.c
@@ -4163,6 +4163,8 @@ rspamd_rcl_add_doc_by_path (struct rspamd_config *cfg,
 			if (ucl_object_type (cur) != UCL_OBJECT) {
 				msg_err_config ("Bad path while lookup for '%s' at %s",
 						doc_path, *comp);
+				g_strfreev (path_components);
+
 				return NULL;
 			}
 
diff --git a/src/rspamd_proxy.c b/src/rspamd_proxy.c
index a7944eecf..13393660e 100644
--- a/src/rspamd_proxy.c
+++ b/src/rspamd_proxy.c
@@ -1544,11 +1544,21 @@ proxy_backend_master_error_handler (struct rspamd_http_connection *conn, GError
 		msg_err_session ("cannot connect to upstream, maximum retries "
 				"has been reached: %d", session->retries);
 		/* Terminate session immediately */
-		proxy_client_write_error (session, err->code, err->message);
+		if (err) {
+			proxy_client_write_error(session, err->code, err->message);
+		}
+		else {
+			proxy_client_write_error(session, 503, "Unknown error after no retries left");
+		}
 	}
 	else {
 		if (!proxy_send_master_message (session)) {
-			proxy_client_write_error (session, err->code, err->message);
+			if (err) {
+				proxy_client_write_error(session, err->code, err->message);
+			}
+			else {
+				proxy_client_write_error(session, 503, "Unknown error on write");
+			}
 		}
 		else {
 			msg_info_session ("retry connection to: %s"