From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Tue, 22 Oct 2024 12:37:30 +0000 (+0300)
Subject: lib: Add event_filter_has_field_prefix()
X-Git-Tag: 2.4.1~796
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc89071bffe5b25ae09867d3d1641104c3a1d872;p=thirdparty%2Fdovecot%2Fcore.git

lib: Add event_filter_has_field_prefix()
---

diff --git a/src/lib/event-filter.c b/src/lib/event-filter.c
index 56052a1d7e..a684353e18 100644
--- a/src/lib/event-filter.c
+++ b/src/lib/event-filter.c
@@ -302,6 +302,46 @@ const char *event_filter_find_field_exact(struct event_filter *filter,
 	return NULL;
 }
 
+static bool
+event_filter_node_has_field_prefix(struct event_filter_node *node,
+				   const char *key, const char *prefix)
+{
+	switch (node->op) {
+	case EVENT_FILTER_OP_CMP_EQ:
+		if (node->type == EVENT_FILTER_NODE_TYPE_EVENT_FIELD_EXACT &&
+		    strcmp(node->field.key, key) == 0 &&
+		    node->field.value_type == EVENT_FIELD_VALUE_TYPE_STR &&
+		    str_begins_with(node->field.value.str, prefix))
+			return TRUE;
+		break;
+	case EVENT_FILTER_OP_AND:
+	case EVENT_FILTER_OP_OR:
+		if (event_filter_node_has_field_prefix(
+				node->children[0], key, prefix) ||
+		    event_filter_node_has_field_prefix(
+				node->children[1], key, prefix))
+			return TRUE;
+		break;
+	case EVENT_FILTER_OP_NOT:
+		return FALSE;
+	default:
+		break;
+	}
+	return FALSE;
+}
+
+bool event_filter_has_field_prefix(struct event_filter *filter,
+				   const char *key, const char *prefix)
+{
+	const struct event_filter_query_internal *query;
+
+	array_foreach(&filter->queries, query) {
+		if (event_filter_node_has_field_prefix(query->expr, key, prefix))
+			return TRUE;
+	}
+	return FALSE;
+}
+
 bool event_filter_category_to_log_type(const char *name,
 				       enum event_filter_log_type *log_type_r)
 {
diff --git a/src/lib/event-filter.h b/src/lib/event-filter.h
index f8f9608dab..b00c4a5ca3 100644
--- a/src/lib/event-filter.h
+++ b/src/lib/event-filter.h
@@ -54,6 +54,9 @@ int event_filter_parse_case_sensitive(const char *str,
    found. This works only for string values. NOT key=value is not returned. */
 const char *event_filter_find_field_exact(struct event_filter *filter,
 					  const char *key, bool *op_not_r);
+/* Returns TRUE if the event filter has key=prefix prefix string. */
+bool event_filter_has_field_prefix(struct event_filter *filter,
+				   const char *key, const char *prefix);
 
 /* Returns TRUE if the event matches the event filter. */
 bool event_filter_match(struct event_filter *filter, struct event *event,