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core-lightning/daemon/output_to_htlc.h

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daemon/output_to_htlc: routines to map outputs for HTLCs for a given commit_num. And use this to resolve old transactions by comparing outputs with HTLCs. Rather than remembering the output ordering for every one of their previous commitment transactions, we just remember the commitment number for each commitment txid, and when we see it, derive all the HTLC scriptpubkeys and the to-us and to-them scriptpubkeys, and figure out which is which. This avoids us having to save information on disk, except for the txid->commitment-number mapping (and the shachain). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-18 06:53:45 +02:00
#ifndef LIGHTNING_DAEMON_OUTPUT_TO_HTLC_H
#define LIGHTNING_DAEMON_OUTPUT_TO_HTLC_H
#include "config.h"
#include "htlc.h"
struct peer;
struct sha256;
/* Get a map of HTLCs (including at least those at the given commit_num). */
struct htlc_output_map *get_htlc_output_map(const tal_t *ctx,
const struct peer *peer,
const struct sha256 *rhash,
channel: remove enum channel_side, rename htlc_side to side. We had enum channel_side (OURS, THEIRS) for which end of a channel we had, and htlc_side (LOCAL, REMOTE) for who proposed the HTLC. Combine these both into simply "enum side". Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-31 08:36:32 +02:00
enum side side,
daemon/output_to_htlc: routines to map outputs for HTLCs for a given commit_num. And use this to resolve old transactions by comparing outputs with HTLCs. Rather than remembering the output ordering for every one of their previous commitment transactions, we just remember the commitment number for each commitment txid, and when we see it, derive all the HTLC scriptpubkeys and the to-us and to-them scriptpubkeys, and figure out which is which. This avoids us having to save information on disk, except for the txid->commitment-number mapping (and the shachain). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-18 06:53:45 +02:00
unsigned int commit_num);
/* If this scriptPubkey pays to a HTLC, get the full wscript */
struct htlc *txout_get_htlc(struct htlc_output_map *omap,
struct bitcoin_tx: remove explicit lengths, use tal_len()/tal_count() They're always tal objects, so we can simply ask tal for the length, simplifying the API. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-01-25 00:35:43 +01:00
const u8 *script, const u8 **wscript);
daemon/output_to_htlc: routines to map outputs for HTLCs for a given commit_num. And use this to resolve old transactions by comparing outputs with HTLCs. Rather than remembering the output ordering for every one of their previous commitment transactions, we just remember the commitment number for each commitment txid, and when we see it, derive all the HTLC scriptpubkeys and the to-us and to-them scriptpubkeys, and figure out which is which. This avoids us having to save information on disk, except for the txid->commitment-number mapping (and the shachain). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-08-18 06:53:45 +02:00
#endif /* LIGHTNING_DAEMON_OUTPUT_TO_HTLC_H */
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