X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/b27841d687ec9e84983340b5581376dfb24010ea..b2b89723a2427bba8290bd6967a1ab39cbb630be:/libs/smux/NativeInteger_oer.c

diff --git a/libs/smux/NativeInteger_oer.c b/libs/smux/NativeInteger_oer.c
new file mode 100644
index 00000000..411413a2
--- /dev/null
+++ b/libs/smux/NativeInteger_oer.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#ifndef ASN_DISABLE_OER_SUPPORT
+
+#include <asn_internal.h>
+#include <NativeInteger.h>
+#include <errno.h>
+
+asn_dec_rval_t
+NativeInteger_decode_oer(const asn_codec_ctx_t *opt_codec_ctx,
+                         const asn_TYPE_descriptor_t *td,
+                         const asn_oer_constraints_t *constraints,
+                         void **nint_ptr, const void *ptr, size_t size) {
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    asn_dec_rval_t rval = {RC_OK, 0};
+    long *native = (long *)*nint_ptr;
+    INTEGER_t tmpint;
+    INTEGER_t *tmpintptr = &tmpint;
+
+    memset(&tmpint, 0, sizeof(tmpint));
+
+    if(!native) {
+        native = (long *)(*nint_ptr = CALLOC(1, sizeof(*native)));
+        if(!native) ASN__DECODE_FAILED;
+    }
+
+    /*
+     * OPTIMIZATION: Encode directly rather than passing through INTEGER.
+     * Saves a memory allocation.
+     */
+    rval = INTEGER_decode_oer(opt_codec_ctx, td, constraints,
+                              (void **)&tmpintptr, ptr, size);
+    if(rval.code != RC_OK) {
+        ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+        return rval;
+    }
+
+    if(specs && specs->field_unsigned) {
+        unsigned long ul;
+        int ok = asn_INTEGER2ulong(&tmpint, &ul) == 0;
+        ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+        if(ok) {
+            *native = ul;
+        } else {
+            rval.code = RC_FAIL;
+            return rval;
+        }
+    } else {
+        long l;
+        int ok = asn_INTEGER2long(&tmpint, &l) == 0;
+        ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+        if(ok) {
+            *native = l;
+        } else {
+            rval.code = RC_FAIL;
+            return rval;
+        }
+    }
+
+    return rval;
+}
+
+/*
+ * Encode as Canonical OER.
+ */
+asn_enc_rval_t
+NativeInteger_encode_oer(const asn_TYPE_descriptor_t *td,
+                         const asn_oer_constraints_t *constraints,
+                         const void *sptr, asn_app_consume_bytes_f *cb,
+                         void *app_key) {
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    INTEGER_t tmpint;
+    long native;
+
+    if(!sptr) ASN__ENCODE_FAILED;
+
+    native = *(const long *)sptr;
+    memset(&tmpint, 0, sizeof(tmpint));
+
+    ASN_DEBUG("Encoding %s %ld as NativeInteger", td ? td->name : "", native);
+
+    if((specs && specs->field_unsigned) ? asn_ulong2INTEGER(&tmpint, native)
+                                        : asn_long2INTEGER(&tmpint, native)) {
+        ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+        ASN__ENCODE_FAILED;
+    } else {
+        asn_enc_rval_t er =
+            INTEGER_encode_oer(td, constraints, &tmpint, cb, app_key);
+        ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+        return er;
+    }
+}
+
+#endif  /* ASN_DISABLE_OER_SUPPORT */