X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/8c6fa3fbaccc22127280bf77a48fab5a3ee0716e..46b0747592074017ff0ea4b33d4a7194235886e5:/libs/smux/NULL.c

diff --git a/libs/smux/NULL.c b/libs/smux/NULL.c
new file mode 100644
index 00000000..6d3316f1
--- /dev/null
+++ b/libs/smux/NULL.c
@@ -0,0 +1,147 @@
+/*-
+ * Copyright (c) 2003, 2005 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <asn_codecs_prim.h>
+#include <NULL.h>
+#include <BOOLEAN.h>	/* Implemented in terms of BOOLEAN type */
+
+/*
+ * NULL basic type description.
+ */
+static ber_tlv_tag_t asn_DEF_NULL_tags[] = {
+	(ASN_TAG_CLASS_UNIVERSAL | (5 << 2))
+};
+asn_TYPE_descriptor_t asn_DEF_NULL = {
+	"NULL",
+	"NULL",
+	BOOLEAN_free,
+	NULL_print,
+	asn_generic_no_constraint,
+	BOOLEAN_decode_ber,	/* Implemented in terms of BOOLEAN */
+	NULL_encode_der,	/* Special handling of DER encoding */
+	NULL_decode_xer,
+	NULL_encode_xer,
+	NULL_decode_uper,	/* Unaligned PER decoder */
+	NULL_encode_uper,	/* Unaligned PER encoder */
+	0, /* Use generic outmost tag fetcher */
+	asn_DEF_NULL_tags,
+	sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
+	asn_DEF_NULL_tags,	/* Same as above */
+	sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
+	0,	/* No PER visible constraints */
+	0, 0,	/* No members */
+	0	/* No specifics */
+};
+
+asn_enc_rval_t
+NULL_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
+	int tag_mode, ber_tlv_tag_t tag,
+	asn_app_consume_bytes_f *cb, void *app_key) {
+	asn_enc_rval_t erval;
+
+	erval.encoded = der_write_tags(td, 0, tag_mode, 0, tag, cb, app_key);
+	if(erval.encoded == -1) {
+		erval.failed_type = td;
+		erval.structure_ptr = ptr;
+	}
+
+	_ASN_ENCODED_OK(erval);
+}
+
+asn_enc_rval_t
+NULL_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
+	int ilevel, enum xer_encoder_flags_e flags,
+		asn_app_consume_bytes_f *cb, void *app_key) {
+	asn_enc_rval_t er;
+
+	(void)td;
+	(void)sptr;
+	(void)ilevel;
+	(void)flags;
+	(void)cb;
+	(void)app_key;
+
+	/* XMLNullValue is empty */
+	er.encoded = 0;
+	_ASN_ENCODED_OK(er);
+}
+
+
+static enum xer_pbd_rval
+NULL__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_buf, size_t chunk_size) {
+	(void)td;
+	(void)sptr;
+
+	if(xer_is_whitespace(chunk_buf, chunk_size))
+		return XPBD_BODY_CONSUMED;
+	else
+		return XPBD_BROKEN_ENCODING;
+}
+
+asn_dec_rval_t
+NULL_decode_xer(asn_codec_ctx_t *opt_codec_ctx,
+	asn_TYPE_descriptor_t *td, void **sptr, const char *opt_mname,
+		const void *buf_ptr, size_t size) {
+
+	return xer_decode_primitive(opt_codec_ctx, td,
+		sptr, sizeof(NULL_t), opt_mname, buf_ptr, size,
+		NULL__xer_body_decode);
+}
+
+int
+NULL_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+	asn_app_consume_bytes_f *cb, void *app_key) {
+
+	(void)td;	/* Unused argument */
+	(void)ilevel;	/* Unused argument */
+
+	if(sptr) {
+		return (cb("<present>", 9, app_key) < 0) ? -1 : 0;
+	} else {
+		return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+	}
+}
+
+asn_dec_rval_t
+NULL_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+	asn_per_constraints_t *constraints, void **sptr, asn_per_data_t *pd) {
+	asn_dec_rval_t rv;
+
+	(void)opt_codec_ctx;
+	(void)td;
+	(void)constraints;
+	(void)pd;
+
+	if(!*sptr) {
+		*sptr = MALLOC(sizeof(NULL_t));
+		if(*sptr) {
+			*(NULL_t *)*sptr = 0;
+		} else {
+			_ASN_DECODE_FAILED;
+		}
+	}
+
+	/*
+	 * NULL type does not have content octets.
+	 */
+
+	rv.code = RC_OK;
+	rv.consumed = 0;
+	return rv;
+}
+
+asn_enc_rval_t
+NULL_encode_uper(asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints,
+		void *sptr, asn_per_outp_t *po) {
+	asn_enc_rval_t er;
+
+	(void)td;
+	(void)constraints;
+	(void)sptr;
+	(void)po;
+
+	er.encoded = 0;
+	_ASN_ENCODED_OK(er);
+}