Exemplo n.º 1
0
isc_result_t
isccc_alist_lookupbinary(isccc_sexpr_t *alist, const char *key, isccc_region_t **r)
{
	isccc_sexpr_t *kv, *v;

	kv = isccc_alist_assq(alist, key);
	if (kv != NULL) {
		v = CDR(kv);
		if (isccc_sexpr_binaryp(v)) {
			if (r != NULL)
				*r = isccc_sexpr_tobinary(v);
			return (ISC_R_SUCCESS);
		} else
			return (ISC_R_EXISTS);
	}

	return (ISC_R_NOTFOUND);
}
Exemplo n.º 2
0
static isc_result_t
value_towire(isccc_sexpr_t *elt, isccc_region_t *target)
{
	size_t len;
	unsigned char *lenp;
	isccc_region_t *vr;
	isc_result_t result;

	if (isccc_sexpr_binaryp(elt)) {
		vr = isccc_sexpr_tobinary(elt);
		len = REGION_SIZE(*vr);
		if (REGION_SIZE(*target) < 1 + 4 + len)
			return (ISC_R_NOSPACE);
		PUT8(ISCCC_CCMSGTYPE_BINARYDATA, target->rstart);
		PUT32(len, target->rstart);
		if (REGION_SIZE(*target) < len)
			return (ISC_R_NOSPACE);
		PUT_MEM(vr->rstart, len, target->rstart);
	} else if (isccc_alist_alistp(elt)) {
		if (REGION_SIZE(*target) < 1 + 4)
			return (ISC_R_NOSPACE);
		PUT8(ISCCC_CCMSGTYPE_TABLE, target->rstart);
		/*
		 * Emit a placeholder length.
		 */
		lenp = target->rstart;
		PUT32(0, target->rstart);
		/*
		 * Emit the table.
		 */
		result = table_towire(elt, target);
		if (result != ISC_R_SUCCESS)
			return (result);
		len = (size_t)(target->rstart - lenp);
		/*
		 * 'len' is 4 bytes too big, since it counts
		 * the placeholder length too.  Adjust and
		 * emit.
		 */
		INSIST(len >= 4U);
		len -= 4;
		PUT32(len, lenp);
	} else if (isccc_sexpr_listp(elt)) {
		if (REGION_SIZE(*target) < 1 + 4)
			return (ISC_R_NOSPACE);
		PUT8(ISCCC_CCMSGTYPE_LIST, target->rstart);
		/*
		 * Emit a placeholder length and count.
		 */
		lenp = target->rstart;
		PUT32(0, target->rstart);
		/*
		 * Emit the list.
		 */
		result = list_towire(elt, target);
		if (result != ISC_R_SUCCESS)
			return (result);
		len = (size_t)(target->rstart - lenp);
		/*
		 * 'len' is 4 bytes too big, since it counts
		 * the placeholder length.  Adjust and emit.
		 */
		INSIST(len >= 4U);
		len -= 4;
		PUT32(len, lenp);
	}

	return (ISC_R_SUCCESS);
}