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Merge #14552: wallet: detecting duplicate wallet by comparing the db filename.

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591203149f wallet: Create IsDatabaseLoaded function (Chun Kuan Lee)
15c93f075a wallet: Add trailing wallet.dat when detecting duplicate wallet if it's a directory. (Chun Kuan Lee)
c456fbd8df Refactor: Move m_db pointers into BerkeleyDatabase (Russell Yanofsky)

Pull request description:

  Fix #14538

  Fix crash attempting to load the same wallet with different path strings that resolve to the same absolute path. The primary check which prevents loading the same wallet twice is:

  6b8d0a2164/src/wallet/db.cpp (L44)

  But this check is skipped if both wallet paths resolve to the same absolute path, due to caching here:

  6b8d0a2164/src/wallet/db.cpp (L467)

  Meanwhile a secondary check for duplicate wallets is not reliable because it based on a literal comparison, instead of comparison using absolute paths:

  6b8d0a2164/src/wallet/wallet.cpp (L3853)

  This PR fixes the latter check to compare the absolute path of a new wallet being loaded to absolute paths of wallets already loaded, so there should no longer be any way to load the same wallet more than once.

Tree-SHA512: 2fa01811c160b57be3b76c6b4983556a04bbce71a3f8202429987ec020664a062e897deedcd9248bc04e9baaa2fc7b464e2595dcaeff2af0818387bf1fcdbf6f
This commit is contained in:
Wladimir J. van der Laan
2018-11-20 15:15:51 +01:00
parent 1b99d153d0 591203149f
commit afa506f6eb
4 changed files with 57 additions and 21 deletions
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3
test/functional/wallet_multiwallet.py
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@@ -223,6 +223,9 @@ class MultiWalletTest(BitcoinTestFramework):
# Fail to load duplicate wallets
assert_raises_rpc_error(-4, 'Wallet file verification failed: Error loading wallet w1. Duplicate -wallet filename specified.', self.nodes[0].loadwallet, wallet_names[0])
# Fail to load duplicate wallets by different ways (directory and filepath)
assert_raises_rpc_error(-4, "Wallet file verification failed: Error loading wallet wallet.dat. Duplicate -wallet filename specified.", self.nodes[0].loadwallet, 'wallet.dat')
# Fail to load if one wallet is a copy of another
assert_raises_rpc_error(-1, "BerkeleyBatch: Can't open database w8_copy (duplicates fileid", self.nodes[0].loadwallet, 'w8_copy')