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[rpcwallet] Clamp walletpassphrase value at 100M seconds

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Larger values seem to trigger a bug on macos+libevent (resulting in the
rpc server stopping).
This commit is contained in:
Suhas Daftuar 2018-04-06 11:54:52 -04:00
parent 1d540046fe
commit 662d19ff72
2 changed files with 10 additions and 9 deletions
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10
src/wallet/rpcwallet.cpp
View file

@ -2349,8 +2349,7 @@ UniValue walletpassphrase(const JSONRPCRequest& request)
"This is needed prior to performing transactions related to private keys such as sending bitcoins\n"
"\nArguments:\n"
"1. \"passphrase\" (string, required) The wallet passphrase\n"
"2. timeout (numeric, required) The time to keep the decryption key in seconds. Limited to at most 1073741824 (2^30) seconds.\n"
" Any value greater than 1073741824 seconds will be set to 1073741824 seconds.\n"
"2. timeout (numeric, required) The time to keep the decryption key in seconds; capped at 100000000 (~3 years).\n"
"\nNote:\n"
"Issuing the walletpassphrase command while the wallet is already unlocked will set a new unlock\n"
"time that overrides the old one.\n"
@ -2383,9 +2382,10 @@ UniValue walletpassphrase(const JSONRPCRequest& request)
if (nSleepTime < 0) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Timeout cannot be negative.");
}
// Clamp timeout to 2^30 seconds
if (nSleepTime > (int64_t)1 << 30) {
nSleepTime = (int64_t)1 << 30;
// Clamp timeout
constexpr int64_t MAX_SLEEP_TIME = 100000000; // larger values trigger a macos/libevent bug?
if (nSleepTime > MAX_SLEEP_TIME) {
nSleepTime = MAX_SLEEP_TIME;
}
if (strWalletPass.length() > 0)

9
test/functional/wallet_encryption.py
View file

@ -64,14 +64,15 @@ class WalletEncryptionTest(BitcoinTestFramework):
assert_raises_rpc_error(-8, "Timeout cannot be negative.", self.nodes[0].walletpassphrase, passphrase2, -10)
# Check the timeout
# Check a time less than the limit
expected_time = int(time.time()) + (1 << 30) - 600
self.nodes[0].walletpassphrase(passphrase2, (1 << 30) - 600)
MAX_VALUE = 100000000
expected_time = int(time.time()) + MAX_VALUE - 600
self.nodes[0].walletpassphrase(passphrase2, MAX_VALUE - 600)
actual_time = self.nodes[0].getwalletinfo()['unlocked_until']
assert_greater_than_or_equal(actual_time, expected_time)
assert_greater_than(expected_time + 5, actual_time) # 5 second buffer
# Check a time greater than the limit
expected_time = int(time.time()) + (1 << 30) - 1
self.nodes[0].walletpassphrase(passphrase2, (1 << 33))
expected_time = int(time.time()) + MAX_VALUE - 1
self.nodes[0].walletpassphrase(passphrase2, MAX_VALUE + 1000)
actual_time = self.nodes[0].getwalletinfo()['unlocked_until']
assert_greater_than_or_equal(actual_time, expected_time)
assert_greater_than(expected_time + 5, actual_time) # 5 second buffer