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a663dc322c
Alpha has segregated witnesses, so txid doesn't include the inputs. That means we can create the first commit transaction before we sign the anchor tx. Bitcoin will need to do this differently: presumbly via new sipops (a OP_CHECKSIG2VERIFY I imagine). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
#ifndef LIGHTNING_PKT_H
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#define LIGHTNING_PKT_H
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/* Simple (non-threadsafe!) wrapper for protobufs.
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*
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* This could be a simple set of macros, if the protobuf-c people hadn't
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* insisted on "prettifing" the names they generate into CamelCase.
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*/
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#include <ccan/endian/endian.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 "lightning.pb-c.h"
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/* A packet, ready to be de-protobuf'ed. */
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struct pkt {
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le32 len;
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u8 data[];
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};
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/* Utility helper: dies if there's a problem. */
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Pkt *pkt_from_file(const char *filename, Pkt__PktCase expect);
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Pkt *any_pkt_from_file(const char *filename);
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/* Total length of packet, including header. */
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size_t pkt_totlen(const struct pkt *pkt);
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struct sha256;
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struct bitcoin_compressed_pubkey;
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struct signature;
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struct pubkey;
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/**
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* openchannel_pkt - create an openchannel message
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* @ctx: tal context to allocate off.
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* @seed: psuedo-random seed to shuffle inputs.
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* @revocation_hash: first hash value generated from seed.
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* @to_me: the pubkey for the commit transactions' P2SH output.
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* @commitment_fee: the fee to use for commitment tx.
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* @rel_locktime_seconds: relative seconds for commitment locktime.
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* @anchor: the anchor transaction details.
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*/
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struct pkt *openchannel_pkt(const tal_t *ctx,
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u64 seed,
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const struct sha256 *revocation_hash,
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const struct pubkey *to_me,
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u64 commitment_fee,
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u32 rel_locktime_seconds,
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Anchor *anchor);
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/**
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* open_anchor_sig_pkt - create an open_anchor_sig message
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* @ctx: tal context to allocate off.
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* @sigs: the der-encoded signatures (tal_count() gives len).
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* @num_sigs: the number of sigs.
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*/
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struct pkt *open_anchor_sig_pkt(const tal_t *ctx, u8 **sigs, size_t num_sigs);
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/**
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* open_commit_sig_pkt - create an open_commit_sig message
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* @ctx: tal context to allocate off.
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* @sig: the signature for the commit transaction input.
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*/
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struct pkt *open_commit_sig_pkt(const tal_t *ctx, const struct signature *sig);
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/**
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* close_channel_pkt - create an close_channel message
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* @ctx: tal context to allocate off.
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* @sig: the signature for the close transaction input.
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*/
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struct pkt *close_channel_pkt(const tal_t *ctx, const struct signature *sig);
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/**
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* close_channel_complete_pkt - create an close_channel_complete message
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* @ctx: tal context to allocate off.
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* @sig: the signature for the close transaction input.
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*/
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struct pkt *close_channel_complete_pkt(const tal_t *ctx,
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const struct signature *sig);
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/**
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* update_pkt - create an update message
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* @ctx: tal context to allocate off.
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* @revocation_hash: the revocation hash for the next tx.
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* @delta: the change in satoshis (to me).
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*/
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struct pkt *update_pkt(const tal_t *ctx,
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const struct sha256 *revocation_hash,
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s64 delta);
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/**
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* update_accept_pkt - create an update_accept message
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* @ctx: tal context to allocate off.
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* @sig: the signature for the close transaction input.
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* @revocation_hash: hash to revoke the next tx.
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*/
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struct pkt *update_accept_pkt(const tal_t *ctx,
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struct signature *sig,
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const struct sha256 *revocation_hash);
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/**
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* update_signature_pkt - create an update_signature message
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* @ctx: tal context to allocate off.
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* @sig: the signature for the close transaction input.
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* @revocation_preimage: preimage to revoke existing (now-obsolete) tx.
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*/
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struct pkt *update_signature_pkt(const tal_t *ctx,
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const struct signature *sig,
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const struct sha256 *revocation_preimage);
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/**
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* update_complete_pkt - create an update_accept message
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* @ctx: tal context to allocate off.
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* @revocation_preimage: preimage to revoke existing (now-obsolete) tx.
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*/
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struct pkt *update_complete_pkt(const tal_t *ctx,
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const struct sha256 *revocation_preimage);
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#endif /* LIGHTNING_PKT_H */
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