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Create bitcoin_tx helper.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-05-29 11:33:18 +09:30
parent f43cdf085a
commit 3a62a9172d
3 changed files with 43 additions and 22 deletions
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22
bitcoin_tx.c
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@@ -1,5 +1,6 @@
#include "bitcoin_tx.h"
#include <ccan/crypto/sha256/sha256.h>
#include <assert.h>
static void sha256_varint(struct sha256_ctx *ctx, varint_t v)
{
@@ -62,3 +63,24 @@ void sha256_tx(struct sha256_ctx *ctx, const struct bitcoin_tx *tx)
sha256_tx_output(ctx, &tx->output[i]);
sha256_le32(ctx, tx->lock_time);
}
struct bitcoin_tx *bitcoin_tx(const tal_t *ctx, varint_t input_count,
varint_t output_count)
{
struct bitcoin_tx *tx = tal(ctx, struct bitcoin_tx);
size_t i;
tx->version = BITCOIN_TX_VERSION;
tx->output_count = output_count;
tx->output = tal_arrz(tx, struct bitcoin_tx_output, output_count);
tx->input_count = input_count;
tx->input = tal_arrz(tx, struct bitcoin_tx_input, input_count);
for (i = 0; i < tx->input_count; i++) {
/* We assume NULL is a zero bitmap */
assert(tx->input[i].script == NULL);
tx->input[i].sequence_number = 0xFFFFFFFF;
}
tx->lock_time = 0xFFFFFFFF;
return tx;
}