f39d2ee086
The pattern of making tal-allocated copies of wally data to pass around was made redundant after these calls were added by the use of tal_wally_start/tal_wally_end to parent wally allocations. We can thus just pass the data directly and avoid the allocations. Removes redundant allocations when checking tx filters and computing fees. Signed-off-by: Jon Griffiths <jon_p_griffiths@yahoo.com>
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
#include "config.h"
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#include <bitcoin/script.h>
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#include <ccan/crypto/siphash24/siphash24.h>
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#include <ccan/mem/mem.h>
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#include <common/memleak.h>
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#include <common/pseudorand.h>
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#include <wallet/txfilter.h>
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#include <wallet/wallet.h>
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static size_t scriptpubkey_hash(const u8 *out)
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{
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struct siphash24_ctx ctx;
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siphash24_init(&ctx, siphash_seed());
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siphash24_update(&ctx, out, tal_bytelen(out));
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return siphash24_done(&ctx);
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}
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static const u8 *scriptpubkey_keyof(const u8 *out)
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{
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return out;
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}
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static bool scriptpubkey_eq(const u8 *a, const u8 *b)
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{
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return tal_arr_eq(a, b);
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}
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HTABLE_DEFINE_TYPE(u8, scriptpubkey_keyof, scriptpubkey_hash, scriptpubkey_eq, scriptpubkeyset);
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struct txfilter {
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struct scriptpubkeyset scriptpubkeyset;
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};
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static size_t outpoint_hash(const struct bitcoin_outpoint *out)
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{
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struct siphash24_ctx ctx;
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siphash24_init(&ctx, siphash_seed());
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siphash24_update(&ctx, &out->txid, sizeof(out->txid));
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siphash24_u32(&ctx, out->n);
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return siphash24_done(&ctx);
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}
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static const struct bitcoin_outpoint *outpoint_keyof(const struct bitcoin_outpoint *out)
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{
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return out;
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}
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HTABLE_DEFINE_TYPE(struct bitcoin_outpoint, outpoint_keyof, outpoint_hash, bitcoin_outpoint_eq,
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outpointset);
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struct outpointfilter {
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struct outpointset *set;
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};
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struct txfilter *txfilter_new(const tal_t *ctx)
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{
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struct txfilter *filter = tal(ctx, struct txfilter);
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scriptpubkeyset_init(&filter->scriptpubkeyset);
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return filter;
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}
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void txfilter_add_scriptpubkey(struct txfilter *filter, const u8 *script TAKES)
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{
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scriptpubkeyset_add(
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&filter->scriptpubkeyset,
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notleak(tal_dup_talarr(filter, u8, script)));
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}
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void txfilter_add_derkey(struct txfilter *filter,
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const u8 derkey[PUBKEY_CMPR_LEN])
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{
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u8 *skp, *p2sh, *p2tr;
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skp = scriptpubkey_p2wpkh_derkey(tmpctx, derkey);
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p2sh = scriptpubkey_p2sh(tmpctx, skp);
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p2tr = scriptpubkey_p2tr_derkey(tmpctx, derkey);
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txfilter_add_scriptpubkey(filter, take(skp));
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txfilter_add_scriptpubkey(filter, take(p2sh));
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txfilter_add_scriptpubkey(filter, take(p2tr));
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}
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bool txfilter_match(const struct txfilter *filter, const struct bitcoin_tx *tx)
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{
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for (size_t i = 0; i < tx->wtx->num_outputs; i++) {
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const struct wally_tx_output *txout = &tx->wtx->outputs[i];
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if (txfilter_scriptpubkey_matches(filter, txout->script))
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return true;
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}
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return false;
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}
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bool txfilter_scriptpubkey_matches(const struct txfilter *filter, const u8 *scriptPubKey)
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{
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if (!scriptPubKey)
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return false;
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return scriptpubkeyset_get(&filter->scriptpubkeyset, scriptPubKey) != NULL;
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}
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void outpointfilter_add(struct outpointfilter *of,
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const struct bitcoin_outpoint *outpoint)
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{
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if (outpointfilter_matches(of, outpoint))
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return;
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/* Have to mark the entries as notleak since they'll not be
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* pointed to by anything other than the htable */
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outpointset_add(of->set, notleak(tal_dup(of->set,
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struct bitcoin_outpoint,
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outpoint)));
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}
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bool outpointfilter_matches(struct outpointfilter *of,
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const struct bitcoin_outpoint *outpoint)
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{
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return outpointset_get(of->set, outpoint) != NULL;
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}
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void outpointfilter_remove(struct outpointfilter *of,
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const struct bitcoin_outpoint *outpoint)
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{
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outpointset_del(of->set, outpoint);
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}
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struct outpointfilter *outpointfilter_new(tal_t *ctx)
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{
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struct outpointfilter *opf = tal(ctx, struct outpointfilter);
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opf->set = tal(opf, struct outpointset);
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outpointset_init(opf->set);
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return opf;
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}
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