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/*-
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <RELATIVE-OID.h>
#include <limits.h> /* for CHAR_BIT */
#include <assert.h>
#include <errno.h>
/*
* RELATIVE-OID basic type description.
*/
static ber_tlv_tag_t asn1_DEF_RELATIVE_OID_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (13 << 2))
};
asn1_TYPE_descriptor_t asn1_DEF_RELATIVE_OID = {
"RELATIVE-OID",
asn_generic_no_constraint,
INTEGER_decode_ber, /* Implemented in terms of INTEGER type */
OBJECT_IDENTIFIER_encode_der,
RELATIVE_OID_print,
INTEGER_free,
0, /* Use generic outmost tag fetcher */
asn1_DEF_RELATIVE_OID_tags,
sizeof(asn1_DEF_RELATIVE_OID_tags)
/ sizeof(asn1_DEF_RELATIVE_OID_tags[0]),
0, /* Always in primitive form */
0, 0, /* No members */
0 /* No specifics */
};
int
RELATIVE_OID_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
const RELATIVE_OID_t *st = (const RELATIVE_OID_t *)sptr;
int startn;
int i;
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(!st || !st->buf)
return cb("<absent>", 8, app_key);
/* Dump preamble */
if(cb("{ ", 2, app_key))
return -1;
for(i = 0, startn = 0; i < st->size; i++) {
uint8_t b = st->buf[i];
if((b & 0x80)) /* Continuation expected */
continue;
if(startn && cb(" ", 1, app_key)) /* Separate arcs */
return -1;
if(OBJECT_IDENTIFIER_print_arc(&st->buf[startn],
i - startn + 1, 0, cb, app_key))
return -1;
startn = i + 1;
}
return cb(" }", 2, app_key);
}
int
RELATIVE_OID_get_arcs(RELATIVE_OID_t *roid,
void *arcs, unsigned int arc_type_size, unsigned int arc_slots) {
void *arcs_end = (char *)arcs + (arc_slots * arc_type_size);
int num_arcs = 0;
int startn = 0;
int i;
if(!roid || !roid->buf) {
errno = EINVAL;
return -1;
}
for(i = 0; i < roid->size; i++) {
uint8_t b = roid->buf[i];
if((b & 0x80)) /* Continuation expected */
continue;
if(arcs < arcs_end) {
if(OBJECT_IDENTIFIER_get_single_arc(
&roid->buf[startn],
i - startn + 1, 0,
arcs, arc_type_size))
return -1;
arcs = ((char *)arcs) + arc_type_size;
num_arcs++;
}
startn = i + 1;
}
return num_arcs;
}
int
RELATIVE_OID_set_arcs(RELATIVE_OID_t *roid, void *arcs, unsigned int arc_type_size, unsigned int arcs_slots) {
uint8_t *buf;
uint8_t *bp;
unsigned int size;
unsigned int i;
if(roid == NULL || arcs == NULL || arc_type_size < 1) {
errno = EINVAL;
return -1;
}
/*
* Roughly estimate the maximum size necessary to encode these arcs.
*/
size = ((arc_type_size * CHAR_BIT + 6) / 7) * arcs_slots;
bp = buf = (uint8_t *)MALLOC(size + 1);
if(!buf) {
/* ENOMEM */
return -1;
}
/*
* Encode the arcs.
*/
for(i = 0; i < arcs_slots; i++, arcs = ((char *)arcs) + arc_type_size) {
bp += OBJECT_IDENTIFIER_set_single_arc(bp,
arcs, arc_type_size, 0);
}
assert((unsigned)(bp - buf) <= size);
/*
* Replace buffer.
*/
roid->size = bp - buf;
bp = roid->buf;
roid->buf = buf;
if(bp) FREEMEM(bp);
return 0;
}
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