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

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

diff --git a/e2sim/asn1c/ANY_aper.c b/e2sim/asn1c/ANY_aper.c
new file mode 100644 (file)
index 0000000..91d7277
--- /dev/null
+++ b/e2sim/asn1c/ANY_aper.c
@@ -0,0 +1,190 @@
+/*
+ * 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 <ANY.h>
+#include <errno.h>
+
+#undef RETURN
+#define RETURN(_code)                       \
+    do {                                    \
+        asn_dec_rval_t tmprval;             \
+        tmprval.code = _code;               \
+        tmprval.consumed = consumed_myself; \
+        return tmprval;                     \
+    } while(0)
+
+int
+ANY_fromType_aper(ANY_t *st, asn_TYPE_descriptor_t *td, void *sptr) {
+    uint8_t *buffer = NULL;
+    ssize_t erval;
+
+    if(!st || !td) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    if(!sptr) {
+        if(st->buf) FREEMEM(st->buf);
+        st->size = 0;
+        return 0;
+    }
+
+    erval = aper_encode_to_new_buffer(td, td->encoding_constraints.per_constraints, sptr, (void**)&buffer);
+
+    if(erval == -1) {
+        if(buffer) FREEMEM(buffer);
+        return -1;
+    }
+    assert((size_t)erval > 0);
+
+    if(st->buf) FREEMEM(st->buf);
+    st->buf = buffer;
+    st->size = erval;
+
+    return 0;
+}
+
+ANY_t *
+ANY_new_fromType_aper(asn_TYPE_descriptor_t *td, void *sptr) {
+    ANY_t tmp;
+    ANY_t *st;
+
+    if(!td || !sptr) {
+        errno = EINVAL;
+        return 0;
+    }
+
+    memset(&tmp, 0, sizeof(tmp));
+
+    if(ANY_fromType_aper(&tmp, td, sptr)) return 0;
+
+    st = (ANY_t *)CALLOC(1, sizeof(ANY_t));
+    if(st) {
+        *st = tmp;
+        return st;
+    } else {
+        FREEMEM(tmp.buf);
+        return 0;
+    }
+}
+
+int
+ANY_to_type_aper(ANY_t *st, asn_TYPE_descriptor_t *td, void **struct_ptr) {
+    asn_dec_rval_t rval;
+    void *newst = 0;
+
+    if(!st || !td || !struct_ptr) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    if(st->buf == 0) {
+        /* Nothing to convert, make it empty. */
+        *struct_ptr = (void *)0;
+        return 0;
+    }
+
+    rval = aper_decode(0, td, (void **)&newst, st->buf, st->size, 0, 0);
+    if(rval.code == RC_OK) {
+        *struct_ptr = newst;
+        return 0;
+    } else {
+        /* Remove possibly partially decoded data. */
+        ASN_STRUCT_FREE(*td, newst);
+        return -1;
+    }
+}
+
+asn_dec_rval_t
+ANY_decode_aper(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) {
+    const asn_OCTET_STRING_specifics_t *specs =
+        td->specifics ? (const asn_OCTET_STRING_specifics_t *)td->specifics
+                      : &asn_SPC_ANY_specs;
+    size_t consumed_myself = 0;
+    int repeat;
+    ANY_t *st = (ANY_t *)*sptr;
+
+    (void)opt_codec_ctx;
+    (void)constraints;
+
+    /*
+     * Allocate the structure.
+     */
+    if(!st) {
+        st = (ANY_t *)(*sptr = CALLOC(1, specs->struct_size));
+        if(!st) RETURN(RC_FAIL);
+    }
+
+    ASN_DEBUG("APER Decoding ANY type");
+
+    st->size = 0;
+    do {
+        ssize_t raw_len;
+        ssize_t len_bytes;
+        ssize_t len_bits;
+        void *p;
+        int ret;
+
+        /* Get the PER length */
+        raw_len = aper_get_length(pd, -1, -1, 0, &repeat);
+        if(raw_len < 0) RETURN(RC_WMORE);
+        if(raw_len == 0 && st->buf) break;
+
+        ASN_DEBUG("Got PER length len %" ASN_PRI_SIZE ", %s (%s)", raw_len,
+                  repeat ? "repeat" : "once", td->name);
+        len_bytes = raw_len;
+        len_bits = len_bytes * 8;
+
+        p = REALLOC(st->buf, st->size + len_bytes + 1);
+        if(!p) RETURN(RC_FAIL);
+        st->buf = (uint8_t *)p;
+
+        ret = per_get_many_bits(pd, &st->buf[st->size], 0, len_bits);
+        if(ret < 0) RETURN(RC_WMORE);
+        consumed_myself += len_bits;
+        st->size += len_bytes;
+    } while(repeat);
+    st->buf[st->size] = 0; /* nul-terminate */
+
+    RETURN(RC_OK);
+}
+
+asn_enc_rval_t
+ANY_encode_aper(const asn_TYPE_descriptor_t *td,
+                const asn_per_constraints_t *constraints, const void *sptr,
+                asn_per_outp_t *po) {
+    const ANY_t *st = (const ANY_t *)sptr;
+    asn_enc_rval_t er = {0, 0, 0};
+    const uint8_t *buf;
+    size_t size;
+    int ret;
+
+    (void)constraints;
+
+    if(!st || (!st->buf && st->size)) ASN__ENCODE_FAILED;
+
+    buf = st->buf;
+    size = st->size;
+    do {
+        int need_eom = 0;
+        ssize_t may_save = aper_put_length(po, -1, -1, size, &need_eom);
+        if(may_save < 0) ASN__ENCODE_FAILED;
+
+        ret = per_put_many_bits(po, buf, may_save * 8);
+        if(ret) ASN__ENCODE_FAILED;
+
+        buf += may_save;
+        size -= may_save;
+        assert(!(may_save & 0x07) || !size);
+        if(need_eom && aper_put_length(po, -1, -1, 0, NULL))
+            ASN__ENCODE_FAILED; /* End of Message length */
+    } while(size);
+
+    ASN__ENCODED_OK(er);
+}