SIM-115: update simulator to use latest E2SM KPM version 3

[sim/e2-interface.git] / e2sim / asn1c / NULL_ber.c

diff --git a/e2sim/asn1c/NULL_ber.c b/e2sim/asn1c/NULL_ber.c
new file mode 100644 (file)
index 0000000..38c85c9
--- /dev/null
+++ b/e2sim/asn1c/NULL_ber.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <NULL.h>
+
+/*
+ * Decode NULL type.
+ */
+asn_dec_rval_t
+NULL_decode_ber(const asn_codec_ctx_t *opt_codec_ctx,
+                const asn_TYPE_descriptor_t *td, void **bool_value,
+                const void *buf_ptr, size_t size, int tag_mode) {
+    NULL_t *st = (NULL_t *)*bool_value;
+    asn_dec_rval_t rval;
+    ber_tlv_len_t length;
+
+    if(st == NULL) {
+        st = (NULL_t *)(*bool_value = CALLOC(1, sizeof(*st)));
+        if(st == NULL) {
+            rval.code = RC_FAIL;
+            rval.consumed = 0;
+            return rval;
+        }
+    }
+
+    ASN_DEBUG("Decoding %s as NULL (tm=%d)", td->name, tag_mode);
+
+    /*
+     * Check tags.
+     */
+    rval = ber_check_tags(opt_codec_ctx, td, 0, buf_ptr, size, tag_mode, 0,
+                          &length, 0);
+    if(rval.code != RC_OK) {
+        return rval;
+    }
+
+    // X.690-201508, #8.8.2, length shall be zero.
+    if(length != 0) {
+        ASN_DEBUG("Decoding %s as NULL failed: too much data", td->name);
+        rval.code = RC_FAIL;
+        rval.consumed = 0;
+        return rval;
+    }
+
+    return rval;
+}
+
+asn_enc_rval_t
+NULL_encode_der(const asn_TYPE_descriptor_t *td, const void *ptr, int tag_mode,
+                ber_tlv_tag_t tag, asn_app_consume_bytes_f *cb, void *app_key) {
+    asn_enc_rval_t erval = {0,0,0};
+
+    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);
+}