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54 lines
1.3 KiB
54 lines
1.3 KiB
#include "txfilter.h"
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#include <bitcoin/script.h>
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#include <ccan/crypto/ripemd160/ripemd160.h>
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#include <common/utils.h>
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struct txfilter {
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u8 **scriptpubkeys;
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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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filter->scriptpubkeys = tal_arr(filter, u8*, 0);
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return filter;
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}
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void txfilter_add_scriptpubkey(struct txfilter *filter, u8 *script)
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{
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size_t count = tal_count(filter->scriptpubkeys);
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tal_resize(&filter->scriptpubkeys, count + 1);
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filter->scriptpubkeys[count] = tal_dup_arr(filter, u8, script, tal_len(script), 0);
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}
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void txfilter_add_derkey(struct txfilter *filter, u8 derkey[PUBKEY_DER_LEN])
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{
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tal_t *tmpctx = tal_tmpctx(filter);
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u8 *skp, *p2sh;
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skp = scriptpubkey_p2wpkh_derkey(tmpctx, derkey);
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p2sh = scriptpubkey_p2sh(tmpctx, skp);
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txfilter_add_scriptpubkey(filter, take(skp));
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txfilter_add_scriptpubkey(filter, take(p2sh));
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tal_free(tmpctx);
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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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u8 *oscript;
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for (size_t i = 0; i < tal_count(tx->output); i++) {
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oscript = tx->output[i].script;
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for (size_t j = 0; j < tal_count(filter->scriptpubkeys); j++) {
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if (scripteq(oscript, filter->scriptpubkeys[j]))
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return true;
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}
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}
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return false;
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}
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