core-lightning/lightningd/build_utxos.h

#ifndef LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H
#define LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H
#include "config.h"
#include <common/utxo.h>
#include <lightningd/lightningd.h>

/* Reserves UTXOs to build tx which pays this amount; returns NULL if
 * impossible. */
const struct utxo **build_utxos(const tal_t *ctx,
				struct lightningd *ld, u64 satoshi_out,
				u32 feerate_per_kw, u64 dust_limit,
				size_t outputscriptlen,
				u64 *change_satoshis, u32 *change_keyindex);

#endif /* LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H */
lightningd: simple wallet support. This allows us to add funds via the P2SH-wrapped Segwit Transactions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-02-21 05:49:02 +01:00			`#ifndef LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H`
			`#define LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H`
			`#include "config.h"`
common: move some files out of lightningd/ Basically all files shared by different daemons. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-08-28 18:05:01 +02:00			`#include <common/utxo.h>`
lightningd: simple wallet support. This allows us to add funds via the P2SH-wrapped Segwit Transactions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-02-21 05:49:02 +01:00			`#include <lightningd/lightningd.h>`

			`/* Reserves UTXOs to build tx which pays this amount; returns NULL if`
lightningd/build_utxos: don't tell them they can pass NULL for change. They can't: wallet_select_coins() doesn't allow it. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-12-20 06:55:04 +01:00			`* impossible. */`
funding_tx: permute inputs, don't re-calculate fees built_utxos needs to calculate fees for figuring out how many utxos to use, so fix that logic and rely on it. We make build_utxos return a pointer array, so funding_tx can simply hand that to permute_inputs. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-03-07 01:58:09 +01:00			`const struct utxo *build_utxos(const tal_t ctx,`
			`struct lightningd *ld, u64 satoshi_out,`
			`u32 feerate_per_kw, u64 dust_limit,`
build_utxos: fix weight calculation, and make more accurate. Accuracy improvements: 1. We assumed the output was a p2wpkh, but it can be user-supplied now. 2. We assumed we always had change; remove this for wallet_select_all. Calculation out-by-one fixes: 1. We need to add 1 byte (4 sipa) for the input count. 2. We need to add 1 byte (4 sipa) for the output count. 3. We need to add 1 byte (4 sipa) for the output script length for each output. 4. We need to add 1 byte (4 sipa) for the input script length for each input. 5. We need to add 1 byte (4 sipa) for the PUSH optcode for each P2SH input. The results are now a slight overestimate (due to guessing 73 bytes for signature, whereas they're 71 or 72 in practice). Fixes: #458 Reported-by: Jonas Nick @jonasnick Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-12-20 07:05:01 +01:00			`size_t outputscriptlen,`
funding_tx: permute inputs, don't re-calculate fees built_utxos needs to calculate fees for figuring out how many utxos to use, so fix that logic and rely on it. We make build_utxos return a pointer array, so funding_tx can simply hand that to permute_inputs. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-03-07 01:58:09 +01:00			`u64 change_satoshis, u32 change_keyindex);`
lightningd: simple wallet support. This allows us to add funds via the P2SH-wrapped Segwit Transactions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2017-02-21 05:49:02 +01:00
			`#endif /* LIGHTNING_LIGHTNINGD_BUILD_UTXOS_H */`