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Andrew Chow 2ce3d26757
Merge bitcoin/bitcoin#26462: wallet: fix crash on loading descriptor wallet containing legacy key type entries 
3198e4239e test: check that loading descriptor wallet with legacy entries throws error (Sebastian Falbesoner)
349ed2a0ee wallet: throw error if legacy entries are present on loading descriptor wallets (Sebastian Falbesoner)

Pull request description:

  Loading a descriptor wallet currently leads to a segfault if a legacy key type entry is present that can be deserialized successfully and needs SPKman-interaction. To reproduce with a "cscript" entry (see second commit for details):

  ```
  $ ./src/bitcoin-cli createwallet crashme
  $ ./src/bitcoin-cli unloadwallet crashme
  $ sqlite3 ~/.bitcoin/wallets/crashme/wallet.dat
  SQLite version 3.38.2 2022-03-26 13:51:10
  Enter ".help" for usage hints.
  sqlite> INSERT INTO main VALUES(x'07637363726970740000000000000000000000000000000000000000', x'00');
  $ ./src/bitcoin-cli loadwallet crashme

  --- bitcoind output: ---
  2022-11-06T13:51:01Z Using SQLite Version 3.38.2
  2022-11-06T13:51:01Z Using wallet /home/honey/.bitcoin/wallets/crashme
  2022-11-06T13:51:01Z init message: Loading wallet…
  2022-11-06T13:51:01Z [crashme] Wallet file version = 10500, last client version = 249900

  Segmentation fault (core dumped)
  ```

  Background: In the wallet key-value-loading routine, most legacy type entries require a `LegacyScriptPubKeyMan` instance after successful deserialization. On a descriptor wallet, creating that (via method `GetOrCreateLegacyScriptPubKeyMan`) fails and then leads to a null-pointer dereference crash. E.g. for CSCRIPT: 50422b770a/src/wallet/walletdb.cpp (L589-L594)

  ~~This PR fixes this by simply ignoring legacy entries if the wallet flags indicate that we have a descriptor wallet. The second commits adds a regression test to the descriptor wallet's functional test (fortunately Python includes sqlite3 support in the standard library).~~

  ~~Probably it would be even better to throw a warning to the user if unexpected legacy entries are found in descriptor wallets, but I think as a first mitigation everything is obvisouly better than crashing. As far as I'm aware, descriptor wallets created/migrated by Bitcoin Core should never end up in a state containing legacy type entries though.~~

  This PR fixes this by throwing an error if legacy entries are found in descriptor wallets on loading.

ACKs for top commit:
  achow101:
    ACK 3198e4239e
  aureleoules:
    ACK 3198e4239e

Tree-SHA512: ee43da3f61248e0fde55d9a705869202cb83df678ebf4816f0e77263f0beac0d7bae9490465d1753159efb093ee37182931d76b2e2b6e8c6f8761285700ace1c
2022-12-05 17:37:48 -05:00
.github doc: Remove label from good first issue template 2020-08-24 09:31:24 +02:00
.tx Adjust .tx/config for new Transifex CLI 2022-10-15 19:11:39 +01:00
build-aux/m4 build: sync ax_boost_base from upstream 2022-09-04 10:10:16 +01:00
build_msvc doc: Mention required workload when building with MSVC 2022-11-14 14:46:02 +00:00
ci Merge bitcoin/bitcoin#26592: ci: only run USDT interface tests on CirrusCI 2022-12-02 10:52:52 +01:00
contrib Merge bitcoin/bitcoin#26565: contrib/builder-keys/keys.txt: remove unavailable key 2022-11-29 12:12:24 +00:00
depends Merge bitcoin/bitcoin#26073: build: fix depends bdb compilation for BSDs 2022-11-28 13:27:48 +00:00
doc Merge bitcoin/bitcoin#25993: doc: Add I2P guidance related to bandwidth and i2pd software version 2022-12-05 11:45:23 +00:00
share build: add example bitcoin conf to win installer 2022-08-16 11:32:46 +01:00
src Merge bitcoin/bitcoin#26462: wallet: fix crash on loading descriptor wallet containing legacy key type entries 2022-12-05 17:37:48 -05:00
test Merge bitcoin/bitcoin#26462: wallet: fix crash on loading descriptor wallet containing legacy key type entries 2022-12-05 17:37:48 -05:00
.cirrus.yml ci: Use macos-ventura-xcode:14.1 image for "macOS native" task 2022-10-25 13:39:03 +01:00
.editorconfig ci: Drop AppVeyor CI integration 2021-09-07 06:12:53 +03:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore refactor: cleanups post unsubtree'ing univalue 2022-06-15 12:56:44 +01:00
.python-version .python-version: bump patch version to 3.6.15 2022-11-03 09:26:27 +01:00
.style.yapf test: .style.yapf: Set column_limit=160 2019-03-04 18:28:13 -05:00
autogen.sh scripted-diff: Bump copyright of files changed in 2019 2019-12-30 10:42:20 +13:00
configure.ac build: Drop unneeded linking of contrib/devtools/ scripts 2022-11-03 11:48:29 +00:00
CONTRIBUTING.md doc: Explain squashing with merge commits 2022-05-24 08:17:41 +02:00
COPYING doc: Update license year range to 2022 2022-01-03 04:48:41 +08:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am build: package test_bitcoin in Windows installer 2022-08-09 09:13:23 +01:00
README.md doc: Explain Bitcoin Core in README.md 2022-05-10 07:49:09 +02:00
REVIEWERS doc: empty REVIEWERS file 2022-07-30 09:05:07 +01:00
SECURITY.md doc: Add my key to SECURITY.md 2022-08-23 16:57:46 -04:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.