]> git.stg.codes - stg.git/blobdiff - libs/smux/NULL.c
Merge remote-tracking branch 'github/master'
[stg.git] / libs / smux / NULL.c
index 62bc91e05081c223d48d9713314ae95b79152715..076898e02b46e0a66e0ee8d1e32873a4d43c97e0 100644 (file)
@@ -5,7 +5,6 @@
 #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 const 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,
+asn_TYPE_operation_t asn_OP_NULL = {
+       NULL_free,
        NULL_print,
-       asn_generic_no_constraint,
-       BOOLEAN_decode_ber,     /* Implemented in terms of BOOLEAN */
+       NULL_compare,
+       NULL_decode_ber,
        NULL_encode_der,        /* Special handling of DER encoding */
        NULL_decode_xer,
        NULL_encode_xer,
+#ifdef ASN_DISABLE_OER_SUPPORT
+       0,
+       0,
+#else
+       NULL_decode_oer,
+       NULL_encode_oer,
+#endif  /* ASN_DISABLE_OER_SUPPORT */
+#ifdef ASN_DISABLE_PER_SUPPORT
+       0,
+       0,
+#else
        NULL_decode_uper,       /* Unaligned PER decoder */
        NULL_encode_uper,       /* Unaligned PER encoder */
-       0, /* Use generic outmost tag fetcher */
+#endif /* ASN_DISABLE_PER_SUPPORT */
+       NULL_random_fill,
+       0       /* Use generic outmost tag fetcher */
+};
+asn_TYPE_descriptor_t asn_DEF_NULL = {
+       "NULL",
+       "NULL",
+       &asn_OP_NULL,
        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, asn_generic_no_constraint },
        0, 0,   /* No members */
        0       /* No specifics */
 };
 
+void
+NULL_free(const asn_TYPE_descriptor_t *td, void *ptr,
+          enum asn_struct_free_method method) {
+    if(td && ptr) {
+        switch(method) {
+        case ASFM_FREE_EVERYTHING:
+            FREEMEM(ptr);
+            break;
+        case ASFM_FREE_UNDERLYING:
+            break;
+        case ASFM_FREE_UNDERLYING_AND_RESET:
+            memset(ptr, 0, sizeof(NULL_t));
+            break;
+        }
+    }
+}
+
+/*
+ * 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(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;
+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;
 
        erval.encoded = der_write_tags(td, 0, tag_mode, 0, tag, cb, app_key);
        if(erval.encoded == -1) {
@@ -51,10 +124,10 @@ NULL_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
 }
 
 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;
+NULL_encode_xer(const asn_TYPE_descriptor_t *td, const 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;
@@ -70,8 +143,9 @@ NULL_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 
 
 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;
+NULL__xer_body_decode(const asn_TYPE_descriptor_t *td, void *sptr,
+                      const void *chunk_buf, size_t chunk_size) {
+    (void)td;
        (void)sptr;
        (void)chunk_buf;    /* Going to be empty according to the rules below. */
 
@@ -85,20 +159,26 @@ NULL__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_b
 }
 
 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,
+NULL_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
+                const 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) {
+NULL_compare(const asn_TYPE_descriptor_t *td, const void *a, const void *b) {
+    (void)td;
+    (void)a;
+    (void)b;
+    return 0;
+}
 
-       (void)td;       /* Unused argument */
+int
+NULL_print(const 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) {
@@ -108,10 +188,59 @@ NULL_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
        }
 }
 
+#ifndef ASN_DISABLE_OER_SUPPORT
+
+asn_dec_rval_t
+NULL_decode_oer(const asn_codec_ctx_t *opt_codec_ctx,
+                const asn_TYPE_descriptor_t *td,
+                const asn_oer_constraints_t *constraints, void **sptr,
+                const void *ptr, size_t size) {
+    asn_dec_rval_t rv = {RC_OK, 0};
+    (void)opt_codec_ctx;
+    (void)td;
+    (void)constraints;
+    (void)ptr;
+    (void)size;
+
+    if(!*sptr) {
+        *sptr = MALLOC(sizeof(NULL_t));
+        if(*sptr) {
+            *(NULL_t *)*sptr = 0;
+        } else {
+            ASN__DECODE_FAILED;
+        }
+    }
+
+    return rv;
+}
+
+asn_enc_rval_t
+NULL_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) {
+    asn_enc_rval_t er;
+
+    (void)td;
+    (void)sptr;
+    (void)constraints;
+    (void)cb;
+    (void)app_key;
+
+    er.encoded = 0; /* Encoding in 0 bytes. */
+
+    ASN__ENCODED_OK(er);
+}
+
+#endif /* ASN_DISABLE_OER_SUPPORT */
+
+#ifndef ASN_DISABLE_PER_SUPPORT
+
 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;
+NULL_decode_uper(const asn_codec_ctx_t *opt_codec_ctx,
+                 const asn_TYPE_descriptor_t *td,
+                 const asn_per_constraints_t *constraints, void **sptr,
+                 asn_per_data_t *pd) {
+    asn_dec_rval_t rv;
 
        (void)opt_codec_ctx;
        (void)td;
@@ -137,9 +266,10 @@ NULL_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
 }
 
 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;
+NULL_encode_uper(const asn_TYPE_descriptor_t *td,
+                 const asn_per_constraints_t *constraints, const void *sptr,
+                 asn_per_outp_t *po) {
+    asn_enc_rval_t er;
 
        (void)td;
        (void)constraints;
@@ -149,3 +279,30 @@ NULL_encode_uper(asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints,
        er.encoded = 0;
        ASN__ENCODED_OK(er);
 }
+
+#endif  /* ASN_DISABLE_PER_SUPPORT */
+
+asn_random_fill_result_t
+NULL_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
+                    const asn_encoding_constraints_t *constr,
+                    size_t max_length) {
+    asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
+    asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
+    asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
+    NULL_t *st = *sptr;
+
+    (void)td;
+    (void)constr;
+
+    if(max_length == 0) return result_skipped;
+
+    if(st == NULL) {
+        st = (NULL_t *)(*sptr = CALLOC(1, sizeof(*st)));
+        if(st == NULL) {
+            return result_failed;
+        }
+    }
+
+    return result_ok;
+}
+