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withdraw: make rpc call accept 'all' as a value.

Browse source 
Closes: #409
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-12-20 06:40:19 +10:30
parent 8cd7ebb924
commit 3da93319fb
2 changed files with 43 additions and 9 deletions
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15
tests/test_lightningd.py
View file

@ -2141,6 +2141,21 @@ class LightningDTests(BaseLightningDTests):
# Non-zero padding in 8-to-5 conversion
self.assertRaises(ValueError, l1.rpc.withdraw, 'tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv', 2*amount)
# Should have 6 outputs available.
c = db.cursor()
c.execute('SELECT COUNT(*) FROM outputs WHERE status=0')
assert(c.fetchone()[0] == 6)
out = l1.rpc.withdraw(waddr, 'all')
c = db.cursor()
c.execute('SELECT COUNT(*) FROM outputs WHERE status=0')
assert(c.fetchone()[0] == 0)
# This should fail, can't even afford fee.
self.assertRaises(ValueError, l1.rpc.withdraw, waddr, 'all')
l1.daemon.wait_for_log('Cannot afford fee')
def test_funding_change(self):
"""Add some funds, fund a channel, and make sure we remember the change
"""

37
wallet/walletrpc.c
View file

@ -9,6 +9,7 @@
#include <common/withdraw_tx.h>
#include <errno.h>
#include <hsmd/gen_hsm_client_wire.h>
#include <inttypes.h>
#include <lightningd/bitcoind.h>
#include <lightningd/chaintopology.h>
#include <lightningd/hsm_control.h>
@ -199,6 +200,7 @@ static void json_withdraw(struct command *cmd,
struct pubkey changekey;
secp256k1_ecdsa_signature *sigs;
struct bitcoin_tx *tx;
bool withdraw_all = false;
if (!json_get_params(buffer, params,
"destination", &desttok,
@ -211,7 +213,9 @@ static void json_withdraw(struct command *cmd,
withdraw = tal(cmd, struct withdrawal);
withdraw->cmd = cmd;
if (!json_tok_u64(buffer, sattok, &withdraw->amount)) {
if (json_tok_streq(buffer, sattok, "all"))
withdraw_all = true;
else if (!json_tok_u64(buffer, sattok, &withdraw->amount)) {
command_fail(cmd, "Invalid satoshis");
return;
}
@ -241,13 +245,28 @@ static void json_withdraw(struct command *cmd,
}
/* Select the coins */
withdraw->utxos = wallet_select_coins(cmd, cmd->ld->wallet,
withdraw->amount,
feerate_per_kw, &fee_estimate,
&withdraw->changesatoshi);
if (!withdraw->utxos) {
command_fail(cmd, "Not enough funds available");
return;
if (withdraw_all) {
withdraw->utxos = wallet_select_all(cmd, cmd->ld->wallet,
feerate_per_kw,
&withdraw->amount,
&fee_estimate);
/* FIXME Pull dust amount from the daemon config */
if (!withdraw->utxos || withdraw->amount < 546) {
command_fail(cmd, "Cannot afford fee %"PRIu64,
fee_estimate);
return;
}
withdraw->changesatoshi = 0;
} else {
withdraw->utxos = wallet_select_coins(cmd, cmd->ld->wallet,
withdraw->amount,
feerate_per_kw,
&fee_estimate,
&withdraw->changesatoshi);
if (!withdraw->utxos) {
command_fail(cmd, "Not enough funds available");
return;
}
}
/* FIXME(cdecker) Pull this from the daemon config */
@ -314,7 +333,7 @@ static void json_withdraw(struct command *cmd,
static const struct json_command withdraw_command = {
"withdraw",
json_withdraw,
"Send {satoshi} to the {destination} address via Bitcoin transaction",
"Send {satoshi} (or 'all') to the {destination} address via Bitcoin transaction",
"Returns the withdrawal transaction ID"
};
AUTODATA(json_command, &withdraw_command);