34 lines
810 B
C
34 lines
810 B
C
#include "bitcoin/script.h"
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#include "bitcoin/tx.h"
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#include "find_p2sh_out.h"
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#include <ccan/err/err.h>
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#include <ccan/tal/tal.h>
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#include <string.h>
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static u32 find_output(const struct bitcoin_tx *tx, const u8 *scriptpubkey)
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{
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u32 i;
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for (i = 0; i < tx->output_count; i++) {
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if (tx->output[i].script_length != tal_count(scriptpubkey))
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continue;
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if (memcmp(tx->output[i].script, scriptpubkey, tal_count(scriptpubkey)) == 0)
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break;
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}
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/* FIXME: Return failure! */
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if (i == tx->output_count)
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errx(1, "No matching output in tx");
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return i;
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}
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u32 find_p2wsh_out(const struct bitcoin_tx *tx, const u8 *witnessscript)
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{
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/* This is the scriptPubKey commit tx will have */
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u8 *p2wsh = scriptpubkey_p2wsh(NULL, witnessscript);
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u32 i;
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i = find_output(tx, p2wsh);
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tal_free(p2wsh);
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return i;
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}
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