Use a compiler to marshall/unmarshall the sessions

This way changes are easier, all is needed is to change the session.asn1
file to add or remove elements, and different session types can also be
supported at the same time.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/asn1c/per_encoder.h b/src/asn1c/per_encoder.h
new file mode 100644
index 0000000..95a6506
--- /dev/null
+++ b/src/asn1c/per_encoder.h
@@ -0,0 +1,69 @@
+/*-
+ * Copyright (c) 2006, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#ifndef	_PER_ENCODER_H_
+#define	_PER_ENCODER_H_
+
+#include <asn_application.h>
+#include <per_support.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct asn_TYPE_descriptor_s;	/* Forward declaration */
+
+/*
+ * Unaligned PER encoder of any ASN.1 type. May be invoked by the application.
+ * WARNING: This function returns the number of encoded bits in the .encoded
+ * field of the return value. Use the following formula to convert to bytes:
+ * 	bytes = ((.encoded + 7) / 8)
+ */
+asn_enc_rval_t uper_encode(struct asn_TYPE_descriptor_s *type_descriptor,
+	void *struct_ptr,	/* Structure to be encoded */
+	asn_app_consume_bytes_f *consume_bytes_cb,	/* Data collector */
+	void *app_key		/* Arbitrary callback argument */
+);
+
+/*
+ * A variant of uper_encode() which encodes data into the existing buffer
+ * WARNING: This function returns the number of encoded bits in the .encoded
+ * field of the return value.
+ */
+asn_enc_rval_t uper_encode_to_buffer(
+	struct asn_TYPE_descriptor_s *type_descriptor,
+	void *struct_ptr,	/* Structure to be encoded */
+	void *buffer,		/* Pre-allocated buffer */
+	size_t buffer_size	/* Initial buffer size (max) */
+);
+
+/*
+ * A variant of uper_encode_to_buffer() which allocates buffer itself.
+ * Returns the number of bytes in the buffer or -1 in case of failure.
+ * WARNING: This function produces a "Production of the complete encoding",
+ * with length of at least one octet. Contrast this to precise bit-packing
+ * encoding of uper_encode() and uper_encode_to_buffer().
+ */
+ssize_t uper_encode_to_new_buffer(
+	struct asn_TYPE_descriptor_s *type_descriptor,
+	asn_per_constraints_t *constraints,
+	void *struct_ptr,	/* Structure to be encoded */
+	void **buffer_r		/* Buffer allocated and returned */
+);
+
+/*
+ * Type of the generic PER encoder function.
+ */
+typedef asn_enc_rval_t (per_type_encoder_f)(
+	struct asn_TYPE_descriptor_s *type_descriptor,
+	asn_per_constraints_t *constraints,
+	void *struct_ptr,
+	asn_per_outp_t *per_output
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _PER_ENCODER_H_ */