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3260fb2ed1
Both sides elect a commitment fee, and the lowest is chosen. That means you can't game the other side (but if you offer too low, then can error out of course). Fees are split 50-50 if possible: originally the whole fee has to be paid by the (single) funder. Neither side can withdraw funds which would make them unable to pay fees. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
118 lines
3.8 KiB
C
118 lines
3.8 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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* open_channel_pkt - create an openchannel message
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* @ctx: tal context to allocate off.
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* @revocation_hash: first hash value generated from seed.
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* @commit: the pubkey for the anchor transactions' P2SH output.
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* @final: the pubkey for the commit transactions' P2SH output.
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* @rel_locktime_seconds: relative seconds for commitment locktime.
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* @offer_anchor: whether we will offer anchor.
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* @min_depth: minimum depth to insist on (if non-zero)
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* @commitment_fee: fee we would like for commitment txs.
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*/
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struct pkt *open_channel_pkt(const tal_t *ctx,
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const struct sha256 *revocation_hash,
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const struct pubkey *commit,
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const struct pubkey *final,
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u32 rel_locktime_seconds,
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bool offer_anchor,
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u32 min_depth,
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u64 commitment_fee);
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/**
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* open_anchor_pkt - create an open_anchor message packet
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* @ctx: tal context to allocate off.
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* @oa_msg: the OpenAnchor message.
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*/
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struct pkt *open_anchor_pkt(const tal_t *ctx, const OpenAnchor *oa_msg);
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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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