Ashin Walpola
d107534eb2
obu-firmware builds against the vanetza-idf C-ITS library, which until now came from the colleague's microbu-esp32c5 tree beside the repository and was not tracked here, so a clone of this repository could not build the firmware it ships. The library alone is now part of obu-firmware, as obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from there by default; -DVANETZA_IDF_DIR still points the build elsewhere. The rest of the colleague's tree (their own VAM firmware, PKI tooling, station-link Python tools, the V2X2MAP bridge) stays out of this repository and gitignored; nothing is pushed to their repository. NOTES.md, docs/06, TODO.md and the pcap verifier's usage line point at the new location.
127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/*
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* Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
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* All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#include "asn_internal.h"
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#include "ENUMERATED.h"
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#include "INTEGER.h"
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struct e2v_key {
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const char *start;
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const char *stop;
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const asn_INTEGER_enum_map_t *vemap;
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const unsigned int *evmap;
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};
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static int
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ENUMERATED__jer_compar_enum2value(const void *kp, const void *am) {
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const struct e2v_key *key = (const struct e2v_key *)kp;
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const asn_INTEGER_enum_map_t *el = (const asn_INTEGER_enum_map_t *)am;
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const char *ptr, *end, *name;
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/* Remap the element (sort by different criterion) */
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el = key->vemap + key->evmap[el - key->vemap];
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/* Compare strings */
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for(ptr = key->start, end = key->stop, name = el->enum_name;
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ptr < end; ptr++, name++) {
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if(*ptr != *name || !*name)
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return *(const unsigned char *)ptr - *(const unsigned char *)name;
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}
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return name[0] ? -1 : 0;
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}
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static const asn_INTEGER_enum_map_t *
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ENUMERATED_jer_map_enum2value(const asn_INTEGER_specifics_t *specs, const char *lstart,
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const char *lstop) {
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const asn_INTEGER_enum_map_t *el_found;
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int count = specs ? specs->map_count : 0;
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struct e2v_key key;
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const char *lp;
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if(!count) return NULL;
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/* Guaranteed: assert(lstart < lstop); */
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/* Figure out the tag name */
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for(lstart++, lp = lstart; lp < lstop; lp++) {
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switch(*lp) {
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case 9: case 10: case 11: case 12: case 13: case 32: /* WSP */
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case 0x22: /* '"' */
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break;
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default:
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continue;
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}
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break;
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}
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if(lp == lstop) return NULL; /* No tag found */
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lstop = lp;
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key.start = lstart;
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key.stop = lstop;
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key.vemap = specs->value2enum;
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key.evmap = specs->enum2value;
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el_found = (asn_INTEGER_enum_map_t *)bsearch(&key,
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specs->value2enum, count, sizeof(specs->value2enum[0]),
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ENUMERATED__jer_compar_enum2value);
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if(el_found) {
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/* Remap enum2value into value2enum */
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el_found = key.vemap + key.evmap[el_found - key.vemap];
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}
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return el_found;
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}
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static enum jer_pbd_rval
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ENUMERATED__jer_body_decode(const asn_TYPE_descriptor_t *td, void *sptr,
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const void *chunk_buf, size_t chunk_size) {
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INTEGER_t *st = (INTEGER_t *)sptr;
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intmax_t dec_value;
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const char *lp;
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const char *lstart = (const char *)chunk_buf;
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const char *lstop = lstart + chunk_size;
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int decoded = 0;
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for (lp = lstart; lp < lstop; ++lp) {
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if (*lp == 0x22 /* '"' */) {
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const asn_INTEGER_enum_map_t *el;
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el = ENUMERATED_jer_map_enum2value(
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(const asn_INTEGER_specifics_t *)
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td->specifics, lstart, lstop);
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if(el) {
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ASN_DEBUG("Found \"%s\" => %ld",
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el->enum_name, el->nat_value);
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dec_value = el->nat_value;
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decoded = 1;
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lp = lstop - 1;
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continue;
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}
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ASN_DEBUG("Unknown identifier for ENUMERATED");
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} else {
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continue;
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}
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}
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if (!decoded) {
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return JPBD_BROKEN_ENCODING;;
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}
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/*
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* Convert the result of parsing of enumeration into a BER representation.
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*/
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if(asn_imax2INTEGER(st, dec_value)) {
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ASN_DEBUG("ENUMERATED decode %s conversion failed", td->name);
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return JPBD_SYSTEM_FAILURE;
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}
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return JPBD_BODY_CONSUMED;
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}
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asn_dec_rval_t
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ENUMERATED_decode_jer(const asn_codec_ctx_t *opt_codec_ctx,
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const asn_TYPE_descriptor_t *td,
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const asn_jer_constraints_t *constraints,
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void **sptr, const void *buf_ptr, size_t size) {
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return jer_decode_primitive(opt_codec_ctx, td,
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sptr, sizeof(INTEGER_t),
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buf_ptr, size, ENUMERATED__jer_body_decode);
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}
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