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test-cli/txid-of: simple helper to get txid.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2015-07-24 16:00:10 +09:30
parent 114161a6a5
commit ee3af28980
5 changed files with 57 additions and 1 deletions
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1
.gitignore vendored
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@ -21,6 +21,7 @@ update-channel-accept
update-channel-signature
update-channel-complete
create-commit-tx
txid-of
ccan/tools/configurator/configurator
libsecp256k1.a
libsecp256k1.la

2
Makefile
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@ -8,7 +8,7 @@ FEATURES := -DHAS_CSV=1 -DALPHA_TXSTYLE=1 -DUSE_SCHNORR=1
# Bitcoin uses DER for signatures
#FEATURES := -DSCRIPTS_USE_DER
PROGRAMS := test-cli/open-channel test-cli/open-anchor-scriptsigs test-cli/open-commit-sig test-cli/check-commit-sig test-cli/check-anchor-scriptsigs test-cli/get-anchor-depth test-cli/create-steal-tx test-cli/create-commit-spend-tx test-cli/close-channel test-cli/create-close-tx test-cli/update-channel test-cli/update-channel-accept test-cli/update-channel-signature test-cli/update-channel-complete test-cli/create-commit-tx
PROGRAMS := test-cli/open-channel test-cli/open-anchor-scriptsigs test-cli/open-commit-sig test-cli/check-commit-sig test-cli/check-anchor-scriptsigs test-cli/get-anchor-depth test-cli/create-steal-tx test-cli/create-commit-spend-tx test-cli/close-channel test-cli/create-close-tx test-cli/update-channel test-cli/update-channel-accept test-cli/update-channel-signature test-cli/update-channel-complete test-cli/create-commit-tx test-cli/txid-of
BITCOIN_OBJS := bitcoin/address.o bitcoin/base58.o bitcoin/pubkey.o bitcoin/script.o bitcoin/shadouble.o bitcoin/signature.o bitcoin/tx.o

8
bitcoin/tx.c
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@ -503,6 +503,14 @@ bool bitcoin_txid_from_hex(const char *hexstr, size_t hexstr_len,
return true;
}
bool bitcoin_txid_to_hex(const struct sha256_double *txid,
char *hexstr, size_t hexstr_len)
{
struct sha256_double rev = *txid;
reverse_bytes(rev.sha.u.u8, sizeof(rev.sha.u.u8));
return hex_encode(&rev, sizeof(rev), hexstr, hexstr_len);
}
static bool write_input_amounts(int fd, const struct bitcoin_tx *tx)
{
/* Alpha required input amounts, so append them */

4
bitcoin/tx.h
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@ -64,4 +64,8 @@ bool bitcoin_tx_write(int fd, const struct bitcoin_tx *tx);
bool bitcoin_txid_from_hex(const char *hexstr, size_t hexstr_len,
struct sha256_double *txid);
/* Get hex string of txid (reversed, a-la bitcoind). */
bool bitcoin_txid_to_hex(const struct sha256_double *txid,
char *hexstr, size_t hexstr_len);
#endif /* LIGHTNING_BITCOIN_TX_H */

43
test-cli/txid-of.c Normal file
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@ -0,0 +1,43 @@
#include <ccan/crypto/shachain/shachain.h>
#include <ccan/read_write_all/read_write_all.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
#include <ccan/opt/opt.h>
#include <ccan/str/hex/hex.h>
#include <ccan/err/err.h>
#include "bitcoin/tx.h"
#include <unistd.h>
int main(int argc, char *argv[])
{
const tal_t *ctx = tal_arr(NULL, char, 0);
struct bitcoin_tx *tx;
struct sha256_double txid;
char str[hex_str_size(sizeof(txid))];
err_set_progname(argv[0]);
/* FIXME: Take update.pbs to adjust channel */
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<tx>\n"
"Print txid of the transaction in the file",
"Print this message.");
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 2)
opt_usage_exit_fail("Expected 1 argument");
tx = bitcoin_tx_from_file(ctx, argv[1]);
bitcoin_txid(tx, &txid);
if (!bitcoin_txid_to_hex(&txid, str, sizeof(str)))
abort();
/* Print it out. */
if (!write_all(STDOUT_FILENO, str, strlen(str)))
err(1, "Writing out txid");
tal_free(ctx);
return 0;
}