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44 lines
1.3 KiB
44 lines
1.3 KiB
#ifndef LIGHTNING_WIRE_TLVSTREAM_H
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#define LIGHTNING_WIRE_TLVSTREAM_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <stdbool.h>
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#include <stdlib.h>
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struct tlv_record_type {
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u64 type;
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/* If this type is present return marshalled value. Otherwise
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* returns NULL. */
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u8 *(*towire)(const tal_t *ctx, const void *record);
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/* Must call fromwire_fail() if it can't parse. */
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void (*fromwire)(const u8 **cursor, size_t *max, void *record);
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};
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/* A single TLV field, consisting of the data and its associated metadata. */
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struct tlv_field {
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/* If this is a type that is known to c-lightning we have a pointer to
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* the metadata. */
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const struct tlv_record_type *meta;
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/* In any case we'll have the numeric type, even if we don't have a
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* name that we can call it. */
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u64 numtype;
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size_t length;
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u8 *value;
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};
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/* Pull all tlvs from a stream. Return false and calls fromwire_fail() on
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* error. */
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bool fromwire_tlvs(const u8 **cursor, size_t *max,
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const struct tlv_record_type types[],
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size_t num_types,
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void *record);
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/* Append a stream of tlvs: types[] must be in increasing type order! */
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void towire_tlvs(u8 **pptr,
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const struct tlv_record_type types[],
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size_t num_types,
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const void *record);
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#endif /* LIGHTNING_WIRE_TLVSTREAM_H */
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