1 files changed, 130 insertions, 0 deletions
diff --git a/pigeonhole/src/lib-sieve/plugins/mime/ext-extracttext.c b/pigeonhole/src/lib-sieve/plugins/mime/ext-extracttext.c
new file mode 100644
index 0000000..4eab76b
--- /dev/null
+++ b/pigeonhole/src/lib-sieve/plugins/mime/ext-extracttext.c
@@ -0,0 +1,130 @@
+/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+/* Extension extracttext
+ * ---------------------
+ *
+ * Authors: Stephan Bosch
+ * Specification: RFC 5703, Section 7
+ * Implementation: full
+ * Status: experimental
+ *
+ */
+
+#include "sieve-common.h"
+
+#include "sieve-code.h"
+#include "sieve-extensions.h"
+#include "sieve-actions.h"
+#include "sieve-commands.h"
+#include "sieve-validator.h"
+#include "sieve-generator.h"
+#include "sieve-interpreter.h"
+#include "sieve-result.h"
+
+#include "sieve-ext-variables.h"
+
+#include "ext-mime-common.h"
+
+/*
+ * Extension
+ */
+
+static bool ext_extracttext_load
+	(const struct sieve_extension *ext, void **context);
+static void ext_extracttext_unload
+	(const struct sieve_extension *ext);
+static bool ext_extracttext_validator_load
+	(const struct sieve_extension *ext, struct sieve_validator *valdtr);
+
+const struct sieve_extension_def extracttext_extension = {
+	.name = "extracttext",
+	.load = ext_extracttext_load,
+	.unload = ext_extracttext_unload,
+	.validator_load = ext_extracttext_validator_load,
+	SIEVE_EXT_DEFINE_OPERATION(extracttext_operation)
+};
+
+static bool ext_extracttext_load
+(const struct sieve_extension *ext, void **context)
+{
+	struct sieve_instance *svinst = ext->svinst;
+	struct ext_extracttext_context *ectx;
+
+	if ( *context != NULL )
+		ext_extracttext_unload(ext);
+
+	ectx = i_new(struct ext_extracttext_context, 1);
+	ectx->var_ext = sieve_ext_variables_get_extension(ext->svinst);
+	ectx->fep_ext = sieve_extension_register
+		(svinst, &foreverypart_extension, FALSE);
+	*context = (void *)ectx;
+	return TRUE;
+}
+
+static void ext_extracttext_unload
+(const struct sieve_extension *ext)
+{
+	struct ext_extracttext_context *ctx =
+		(struct ext_extracttext_context *) ext->context;
+
+	i_free(ctx);
+}
+
+/*
+ * Extension validation
+ */
+
+static bool ext_extracttext_validator_validate
+	(const struct sieve_extension *ext,
+		struct sieve_validator *valdtr, void *context,
+		struct sieve_ast_argument *require_arg,
+		bool required);
+
+const struct sieve_validator_extension
+extracttext_validator_extension = {
+	.ext = &extracttext_extension,
+	.validate = ext_extracttext_validator_validate
+};
+
+static bool ext_extracttext_validator_load
+(const struct sieve_extension *ext, struct sieve_validator *valdtr)
+{
+	/* Register validator extension to check for conflict with eextracttext */
+	sieve_validator_extension_register
+		(valdtr, ext, &extracttext_validator_extension, NULL);
+
+	/* Register new commands */
+	sieve_validator_register_command(valdtr, ext, &cmd_extracttext);
+
+	return TRUE;
+}
+
+static bool ext_extracttext_validator_validate
+(const struct sieve_extension *ext,
+	struct sieve_validator *valdtr, void *context ATTR_UNUSED,
+	struct sieve_ast_argument *require_arg,
+	bool required ATTR_UNUSED)
+{
+	struct ext_extracttext_context *ectx =
+		(struct ext_extracttext_context *)ext->context;
+
+	if ( ectx->var_ext == NULL ||
+		!sieve_ext_variables_is_active
+			(ectx->var_ext, valdtr) ) {
+		sieve_argument_validate_error(valdtr, require_arg,
+			"extracttext extension cannot be used "
+			"without variables extension");
+		return FALSE;
+	}
+	if ( ectx->fep_ext == NULL ||
+		!sieve_validator_extension_loaded
+	    (valdtr, ectx->fep_ext) ) {
+		sieve_argument_validate_error(valdtr, require_arg,
+			"extracttext extension cannot be used "
+			"without foreverypart extension");
+		return FALSE;
+	}
+
+	return TRUE;
+}