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Merge #12101: Clamp walletpassphrase timeout to 2^30 seconds and check its bounds

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134cdc7 Test walletpassphrase timeout bounds and clamping (Andrew Chow)
0b63e3c Clamp walletpassphrase timeout to 2^(30) seconds and check its bounds (Andrew Chow)

Pull request description:

  Fixes #12100

  Makes the timeout be clamped to 2^30 seconds to avoid the issue with sign flipping with large timeout values and thus relocking the wallet instantly. Unlocking for at most ~34 years should be sufficient.

  Also checks that the timeout is not negative to avoid instant relocks.

Tree-SHA512: 426922f08c54e323d259e25dcdbebc2cd560708a65111ce6051493a7e7c61e79d9da1ea4026cc0d68807d728f5d7c0d7c58168c6ef4167b94cf6c2877af88794
This commit is contained in:
Wladimir J. van der Laan
2018-01-17 12:15:45 +01:00
parent adce1de9a6 134cdc7cee
commit c7978be899
2 changed files with 32 additions and 2 deletions
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19
test/functional/wallet-encryption.py
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@@ -10,6 +10,8 @@ from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
assert_greater_than,
assert_greater_than_or_equal,
)
class WalletEncryptionTest(BitcoinTestFramework):
@@ -56,6 +58,23 @@ class WalletEncryptionTest(BitcoinTestFramework):
assert_raises_rpc_error(-14, "wallet passphrase entered was incorrect", self.nodes[0].walletpassphrase, passphrase, 10)
self.nodes[0].walletpassphrase(passphrase2, 10)
assert_equal(privkey, self.nodes[0].dumpprivkey(address))
self.nodes[0].walletlock()
# Test timeout bounds
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)
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))
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
if __name__ == '__main__':
WalletEncryptionTest().main()