126 lines
3.9 KiB
C
126 lines
3.9 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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* leak_anchor_sigs_and_pretend_we_didnt_pkt - leak anchor scriptsigs
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* @ctx: tal context to allocate off.
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* @s: OpenAnchorSig.
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*/
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struct pkt *leak_anchor_sigs_and_pretend_we_didnt_pkt(const tal_t *ctx,
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OpenAnchorScriptsigs *s);
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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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