1 files changed, 318 insertions, 0 deletions
diff --git a/pigeonhole/src/lib-sieve/tst-size.c b/pigeonhole/src/lib-sieve/tst-size.c
new file mode 100644
index 0000000..1ed101b
--- /dev/null
+++ b/pigeonhole/src/lib-sieve/tst-size.c
@@ -0,0 +1,318 @@
+/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+#include "lib.h"
+#include "mail-storage.h"
+
+#include "sieve-common.h"
+#include "sieve-code.h"
+#include "sieve-message.h"
+#include "sieve-commands.h"
+#include "sieve-validator.h"
+#include "sieve-generator.h"
+#include "sieve-interpreter.h"
+#include "sieve-dump.h"
+
+/*
+ * Size test
+ *
+ * Syntax:
+ *    size <":over" / ":under"> <limit: number>
+ */
+
+static bool
+tst_size_registered(struct sieve_validator *valdtr,
+		    const struct sieve_extension *ext,
+		    struct sieve_command_registration *cmd_reg);
+static bool
+tst_size_pre_validate(struct sieve_validator *valdtr,
+		      struct sieve_command *tst);
+static bool
+tst_size_validate(struct sieve_validator *valdtr, struct sieve_command *tst);
+static bool
+tst_size_generate(const struct sieve_codegen_env *cgenv,
+		  struct sieve_command *ctx);
+
+const struct sieve_command_def tst_size = {
+	.identifier = "size",
+	.type = SCT_TEST,
+	.positional_args = 1,
+	.subtests = 0,
+	.block_allowed = FALSE,
+	.block_required = FALSE,
+	.registered = tst_size_registered,
+	.pre_validate = tst_size_pre_validate,
+	.validate = tst_size_validate,
+	.generate = tst_size_generate
+};
+
+/*
+ * Size operations
+ */
+
+static bool
+tst_size_operation_dump(const struct sieve_dumptime_env *denv,
+			sieve_size_t *address);
+static int
+tst_size_operation_execute(const struct sieve_runtime_env *renv,
+			   sieve_size_t *address);
+
+const struct sieve_operation_def tst_size_over_operation = {
+	.mnemonic = "SIZE-OVER",
+	.code = SIEVE_OPERATION_SIZE_OVER,
+	.dump = tst_size_operation_dump,
+	.execute = tst_size_operation_execute
+};
+
+const struct sieve_operation_def tst_size_under_operation = {
+	.mnemonic = "SIZE-UNDER",
+	.code = SIEVE_OPERATION_SIZE_UNDER,
+	.dump = tst_size_operation_dump,
+	.execute = tst_size_operation_execute
+};
+
+/*
+ * Context data
+ */
+
+struct tst_size_context_data {
+	enum { SIZE_UNASSIGNED, SIZE_UNDER, SIZE_OVER } type;
+};
+
+#define TST_SIZE_ERROR_DUP_TAG \
+	"exactly one of the ':under' or ':over' tags must be specified " \
+	"for the size test, but more were found"
+
+/*
+ * Tag validation
+ */
+
+static bool
+tst_size_validate_over_tag(struct sieve_validator *valdtr,
+			   struct sieve_ast_argument **arg,
+			   struct sieve_command *tst)
+{
+	struct tst_size_context_data *ctx_data =
+		(struct tst_size_context_data *)tst->data;
+
+	if (ctx_data->type != SIZE_UNASSIGNED) {
+		sieve_argument_validate_error(valdtr, *arg,
+					      TST_SIZE_ERROR_DUP_TAG);
+		return FALSE;
+	}
+
+	ctx_data->type = SIZE_OVER;
+
+	/* Delete this tag */
+	*arg = sieve_ast_arguments_detach(*arg, 1);
+
+	return TRUE;
+}
+
+static bool
+tst_size_validate_under_tag(struct sieve_validator *valdtr,
+			    struct sieve_ast_argument **arg ATTR_UNUSED,
+			    struct sieve_command *tst)
+{
+	struct tst_size_context_data *ctx_data =
+		(struct tst_size_context_data *)tst->data;
+
+	if (ctx_data->type != SIZE_UNASSIGNED) {
+		sieve_argument_validate_error(valdtr, *arg,
+					      TST_SIZE_ERROR_DUP_TAG);
+		return FALSE;
+	}
+
+	ctx_data->type = SIZE_UNDER;
+
+	/* Delete this tag */
+	*arg = sieve_ast_arguments_detach(*arg, 1);
+
+	return TRUE;
+}
+
+/*
+ * Test registration
+ */
+
+static const struct sieve_argument_def size_over_tag = {
+	.identifier = "over",
+	.validate = tst_size_validate_over_tag
+};
+
+static const struct sieve_argument_def size_under_tag = {
+	.identifier = "under",
+	.validate = tst_size_validate_under_tag,
+};
+
+static bool
+tst_size_registered(struct sieve_validator *valdtr,
+		    const struct sieve_extension *ext ATTR_UNUSED,
+		    struct sieve_command_registration *cmd_reg)
+{
+	/* Register our tags */
+	sieve_validator_register_tag(valdtr, cmd_reg, NULL, &size_over_tag, 0);
+	sieve_validator_register_tag(valdtr, cmd_reg, NULL, &size_under_tag, 0);
+
+	return TRUE;
+}
+
+/*
+ * Test validation
+ */
+
+static bool
+tst_size_pre_validate(struct sieve_validator *valdtr ATTR_UNUSED,
+		      struct sieve_command *tst)
+{
+	struct tst_size_context_data *ctx_data;
+
+	/* Assign context */
+	ctx_data = p_new(sieve_command_pool(tst),
+			 struct tst_size_context_data, 1);
+	ctx_data->type = SIZE_UNASSIGNED;
+	tst->data = ctx_data;
+
+	return TRUE;
+}
+
+static bool
+tst_size_validate(struct sieve_validator *valdtr, struct sieve_command *tst)
+{
+	struct tst_size_context_data *ctx_data =
+		(struct tst_size_context_data *)tst->data;
+	struct sieve_ast_argument *arg = tst->first_positional;
+
+	if (ctx_data->type == SIZE_UNASSIGNED) {
+		sieve_command_validate_error(valdtr, tst,
+			"the size test requires either the :under or the :over tag "
+			"to be specified");
+		return FALSE;
+	}
+
+	if (!sieve_validate_positional_argument(valdtr, tst, arg, "limit", 1,
+						SAAT_NUMBER))
+		return FALSE;
+
+	return sieve_validator_argument_activate(valdtr, tst, arg, FALSE);
+}
+
+/*
+ * Code generation
+ */
+
+bool tst_size_generate(const struct sieve_codegen_env *cgenv,
+		       struct sieve_command *tst)
+{
+	struct tst_size_context_data *ctx_data =
+		(struct tst_size_context_data *)tst->data;
+
+	if (ctx_data->type == SIZE_OVER) {
+		sieve_operation_emit(cgenv->sblock, NULL,
+				     &tst_size_over_operation);
+	} else {
+		sieve_operation_emit(cgenv->sblock, NULL,
+				     &tst_size_under_operation);
+	}
+
+ 	/* Generate arguments */
+	if (!sieve_generate_arguments(cgenv, tst, NULL))
+		return FALSE;
+
+	return TRUE;
+}
+
+/*
+ * Code dump
+ */
+
+static bool
+tst_size_operation_dump(const struct sieve_dumptime_env *denv,
+			sieve_size_t *address)
+{
+	sieve_code_dumpf(denv, "%s", sieve_operation_mnemonic(denv->oprtn));
+	sieve_code_descend(denv);
+
+	return sieve_opr_number_dump(denv, address, "limit");
+}
+
+/*
+ * Code execution
+ */
+
+static inline bool
+tst_size_get(const struct sieve_runtime_env *renv, sieve_number_t *size)
+{
+	struct mail *mail = sieve_message_get_mail(renv->msgctx);
+	uoff_t psize;
+
+	if (mail_get_physical_size(mail, &psize) < 0)
+		return FALSE;
+
+	*size = psize;
+	return TRUE;
+}
+
+static int
+tst_size_operation_execute(const struct sieve_runtime_env *renv,
+			   sieve_size_t *address)
+{
+	sieve_number_t mail_size, limit;
+	int ret;
+
+	/*
+	 * Read operands
+	 */
+
+	/* Read size limit */
+	if ((ret = sieve_opr_number_read(renv, address, "limit", &limit)) <= 0)
+		return ret;
+
+	/*
+	 * Perform test
+	 */
+
+	/* Get the size of the message */
+	if (!tst_size_get(renv, &mail_size)) {
+		/* FIXME: improve this error */
+		e_error(renv->event, "failed to assess message size");
+		return SIEVE_EXEC_FAILURE;
+	}
+
+	/* Perform the test */
+	if (sieve_operation_is(renv->oprtn, tst_size_over_operation)) {
+		sieve_runtime_trace(renv, SIEVE_TRLVL_TESTS, "size :over test");
+
+		if (sieve_runtime_trace_active(renv, SIEVE_TRLVL_MATCHING)) {
+			sieve_runtime_trace_descend(renv);
+
+			sieve_runtime_trace(
+				renv, 0, "comparing message size %llu",
+				(unsigned long long)mail_size);
+			sieve_runtime_trace(
+				renv, 0, "with upper limit %llu",
+				(unsigned long long)limit);
+		}
+
+		sieve_interpreter_set_test_result(renv->interp,
+						  (mail_size > limit));
+	} else {
+		sieve_runtime_trace(renv, SIEVE_TRLVL_TESTS,
+				    "size :under test");
+
+		if (sieve_runtime_trace_active(renv, SIEVE_TRLVL_MATCHING)) {
+			sieve_runtime_trace_descend(renv);
+
+			sieve_runtime_trace(
+				renv, 0, "comparing message size %llu",
+				(unsigned long long)mail_size);
+			sieve_runtime_trace(
+				renv, 0, "with lower limit %llu",
+				(unsigned long long)limit);
+		}
+
+		sieve_interpreter_set_test_result(renv->interp,
+						  (mail_size < limit));
+	}
+	return SIEVE_EXEC_OK;
+}