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Merge #14453: rpc: Fix wallet unload during walletpassphrase timeout

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8907df9e02ec47ef249a7422faa766f06aa01e94 qa: Ensure wallet unload during walletpassphrase timeout (João Barbosa)
321decffa1fbf213462d97e5372bd0c4eeb99635 rpc: Fix wallet unload during walletpassphrase timeout (João Barbosa)

Pull request description:

  Replaces the raw wallet pointer in the `RPCRunLater` callback with a `std::weak_ptr` to check if the wallet is not expired.

  To test:
  ```
  bitcoind -regtest
  bitcoin-cli -regtest encryptwallet foobar
  bitcoin-cli -regtest walletpassphrase foobar 5 && bitcoin-cli -regtest unloadwallet ""
  ```

  Fixes #14452.

Tree-SHA512: 311e839234f5fb7955ab5412a2cfc1903ee7132ea56a8ab992ede3614586834886bd65192b76531ae0aa3a526b38e70ca2e1cdbabe52995906ff97b49d93c268
This commit is contained in:
Wladimir J. van der Laan 2018-10-24 16:41:18 +02:00 committed by pasta
parent 77b76ef0a5
commit 631020a6e8
2 changed files with 17 additions and 8 deletions
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20
src/wallet/rpcwallet.cpp
View File

@ -2488,13 +2488,6 @@ static UniValue keypoolrefill(const JSONRPCRequest& request)
}
static void LockWallet(CWallet* pWallet)
{
LOCK(pWallet->cs_wallet);
pWallet->nRelockTime = 0;
pWallet->Lock();
}
static UniValue walletpassphrase(const JSONRPCRequest& request)
{
std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
@ -2570,7 +2563,18 @@ static UniValue walletpassphrase(const JSONRPCRequest& request)
pwallet->TopUpKeyPool();
pwallet->nRelockTime = GetTime() + nSleepTime;
RPCRunLater(strprintf("lockwallet(%s)", pwallet->GetName()), std::bind(LockWallet, pwallet), nSleepTime);
// Keep a weak pointer to the wallet so that it is possible to unload the
// wallet before the following callback is called. If a valid shared pointer
// is acquired in the callback then the wallet is still loaded.
std::weak_ptr<CWallet> weak_wallet = wallet;
RPCRunLater(strprintf("lockwallet(%s)", pwallet->GetName()), [weak_wallet] {
if (auto shared_wallet = weak_wallet.lock()) {
LOCK(shared_wallet->cs_wallet);
shared_wallet->Lock();
shared_wallet->nRelockTime = 0;
}
}, nSleepTime);
return NullUniValue;
}

5
test/functional/wallet_multiwallet.py
View File

@ -8,6 +8,7 @@ Verify that a dashd node can load multiple wallet files
"""
import os
import shutil
import time
from test_framework.test_framework import BitcoinTestFramework
from test_framework.test_node import ErrorMatch
@ -258,7 +259,11 @@ class MultiWalletTest(BitcoinTestFramework):
assert 'w1' not in self.nodes[0].listwallets()
# Successfully unload the wallet referenced by the request endpoint
# Also ensure unload works during walletpassphrase timeout
w2.encryptwallet('test')
w2.walletpassphrase('test', 1)
w2.unloadwallet()
time.sleep(1.1)
assert 'w2' not in self.nodes[0].listwallets()
# Successfully unload all wallets