d45eb3964f test: compare BDB dumps of test framework parser and wallet tool (Sebastian Falbesoner)
01ddd9f646 test: complete BDB parser (handle internal/overflow pages, support all page sizes) (Sebastian Falbesoner)
Pull request description:
This PR adds missing features to our test framework's BDB parser with the goal of hopefully being able to read all legacy wallets that are created with current and past versions of Bitcoin Core. This could be useful both for making review of https://github.com/bitcoin/bitcoin/pull/26606 easier and to also possibly improve our functional tests for the wallet BDB-ro parser by additionally validating it with an alternative implementation. The second commits introduces a test that create a legacy wallet with huge label strings (in order to create overflow pages, i.e. pages needed for key/value data than is larger than the page size) and compares the dump outputs of wallet tool and the extended test framework BDB parser.
It can be exercised via `$ ./test/functional/tool_wallet.py --legacy`. BDB support has to be compiled in (obviously).
For some manual tests regarding different page sizes, the following patch can be used:
```diff
diff --git a/src/wallet/bdb.cpp b/src/wallet/bdb.cpp
index 38cca32f80..1bf39323d3 100644
--- a/src/wallet/bdb.cpp
+++ b/src/wallet/bdb.cpp
@@ -395,6 +395,7 @@ void BerkeleyDatabase::Open()
DB_BTREE, // Database type
nFlags, // Flags
0);
+ pdb_temp->set_pagesize(1<<9); /* valid BDB pagesizes are from 1<<9 (=512) to <<16 (=65536) */
if (ret != 0) {
throw std::runtime_error(strprintf("BerkeleyDatabase: Error %d, can't open database %s", ret, strFile));
```
I verified that the newly introduced test passes with all valid page sizes between 512 and 65536.
ACKs for top commit:
achow101:
ACK d45eb3964f
furszy:
utACK d45eb3964f
brunoerg:
code review ACK d45eb3964f
Tree-SHA512: 9f8ac80452545f4fcd24a17ea6f9cf91b487cfb1fcb99a0ba9153fa4e3b239daa126454e26109fdcb72eb1c76a4ee3b46fd6af21dc318ab67bd12b3ebd26cfdd
1e0c5bd74a