1 files changed, 69 insertions, 0 deletions
diff --git a/pigeonhole/src/lib-sieve/plugins/index/ext-index.c b/pigeonhole/src/lib-sieve/plugins/index/ext-index.c
new file mode 100644
index 0000000..33e7771
--- /dev/null
+++ b/pigeonhole/src/lib-sieve/plugins/index/ext-index.c
@@ -0,0 +1,69 @@
+/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+/* Extension index
+ * ------------------
+ *
+ * Authors: Stephan Bosch
+ * Specification: RFC 5260
+ * Implementation: full
+ * Status: testing
+ *
+ */
+
+#include "lib.h"
+#include "array.h"
+
+#include "sieve-common.h"
+#include "sieve-message.h"
+#include "sieve-extensions.h"
+#include "sieve-commands.h"
+
+#include "sieve-validator.h"
+#include "sieve-generator.h"
+#include "sieve-binary.h"
+#include "sieve-interpreter.h"
+#include "sieve-dump.h"
+
+#include "ext-index-common.h"
+
+/*
+ * Extension
+ */
+
+static bool ext_index_validator_load
+(const struct sieve_extension *ext, struct sieve_validator *validator);
+
+const struct sieve_extension_def index_extension = {
+	.name = "index",
+	.validator_load = ext_index_validator_load,
+	SIEVE_EXT_DEFINE_OPERAND(index_operand)
+};
+
+static bool ext_index_validator_load
+(const struct sieve_extension *ext, struct sieve_validator *valdtr)
+{
+	/* Register :index and :last tags with header, address and date test commands
+	 * and we don't care whether these command are registered or even whether
+	 * these will be registered at all. The validator handles either situation
+	 * gracefully.
+	 */
+	sieve_validator_register_external_tag
+		(valdtr, "header", ext, &index_tag, SIEVE_OPT_MESSAGE_OVERRIDE);
+	sieve_validator_register_external_tag
+		(valdtr, "header", ext, &last_tag, 0);
+
+	sieve_validator_register_external_tag
+		(valdtr, "address", ext, &index_tag, SIEVE_OPT_MESSAGE_OVERRIDE);
+	sieve_validator_register_external_tag
+		(valdtr, "address", ext, &last_tag, 0);
+
+	sieve_validator_register_external_tag
+		(valdtr, "date", ext, &index_tag, SIEVE_OPT_MESSAGE_OVERRIDE);
+	sieve_validator_register_external_tag
+		(valdtr, "date", ext, &last_tag, 0);
+
+	return TRUE;
+}
+
+