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aba9af9e12
So far we didn't need this since we were adding them in the correct order. Now we have multiple possible origins so we better sort them.
65 lines
2.4 KiB
C
65 lines
2.4 KiB
C
#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 <bitcoin/short_channel_id.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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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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/* Given any tlvstream serialize the raw fields (untyped ones). */
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void towire_tlvstream_raw(u8 **pptr, struct tlv_field *fields);
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/* Given a tlv record with manually-set fields, populate ->fields */
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#define tlv_make_fields(tlv, type) \
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tlv_make_fields_(tlvs_##type, TLVS_ARRAY_SIZE_##type, (tlv))
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struct tlv_field *tlv_make_fields_(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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/* Generic TLV decode/encode */
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bool fromwire_tlv(const u8 **cursor, size_t *max,
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const struct tlv_record_type *types, size_t num_types,
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void *record, struct tlv_field **fields);
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void towire_tlv(u8 **pptr,
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const struct tlv_record_type *types, size_t num_types,
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const void *record);
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bool tlv_fields_valid(const struct tlv_field *fields, u64 *allow_extra,
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size_t *err_index);
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/* Generic primitive setters for tlvstreams. */
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void tlvstream_set_raw(struct tlv_field **stream, u64 type, void *value, size_t valuelen);
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void tlvstream_set_short_channel_id(struct tlv_field **stream, u64 type,
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struct short_channel_id *value);
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void tlvstream_set_tu64(struct tlv_field **stream, u64 type, u64 value);
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void tlvstream_set_tu32(struct tlv_field **stream, u64 type, u32 value);
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/* Generic primitive gettes for tlvstreams. */
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bool tlvstream_get_short_channel_id(struct tlv_field *stream, u64 type,
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struct short_channel_id *value);
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bool tlvstream_get_tu64(struct tlv_field *stream, u64 type, u64 *value);
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bool tlvstream_get_tu32(struct tlv_field *stream, u64 type, u32 *value);
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#endif /* LIGHTNING_WIRE_TLVSTREAM_H */
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