Adds support for versionbits deployments to DeploymentEnabled,
DeploymentActiveAfter and DeploymentActiveAt. Also moves versionbitscache
from validation to deploymentstatus.
Provides DeploymentEnabled, DeploymentActiveAt, and DeploymentActiveAfter
helpers for checking the status of buried deployments. Can be overloaded
so the same syntax works for non-buried deployments, allowing future
soft forks to be changed from signalled to buried deployments without
having to touch the implementation code.
Replaces IsWitnessEnabled and IsScriptWitnessEnabled.
fa0d9211ef refactor: Remove chainparams arg from CChainState member functions (MarcoFalke)
fa38947125 refactor: Remove ::Params() global from inside CChainState member functions (MarcoFalke)
Pull request description:
The `::Params()` global is verbose and confusing. Also it makes tests a bit harder to write because they'd have to mock a global.
Fix all issues by simply using a member variable that points to the right params.
(Can be reviewed with `--word-diff-regex=.`)
ACKs for top commit:
jnewbery:
ACK fa0d9211ef
kiminuo:
utACK fa0d9211
theStack:
ACK fa0d9211ef🍉
Tree-SHA512: 44676b19c9ed471ccb536331d3029bad192d7d50f394fd7b8527ec431452aeec8c4494164b9cf8e16e0123c4463b16be864366c6b599370032c17262625a0356
fa9ebedec3 Reject invalid coin height and output index when loading assumeutxo (MarcoFalke)
Pull request description:
It should be impossible to have a coin at a height higher than the height of the snapshot block, so reject those early to avoid integer wraparounds and hash collisions later on.
Same for the outpoint index.
Both issues were found by fuzzing:
* The height issue by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34793
* The outpoint issue by my fuzz server: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34793#c2
ACKs for top commit:
practicalswift:
cr ACK fa9ebedec3: patch looks correct
jamesob:
crACK fa9ebedec3
theStack:
Code review ACK fa9ebedec3
benthecarman:
crACK fa9ebedec3
Tree-SHA512: dae7caee4b3862b23ebdf2acb7edec4baf75b0dbf1409b370b1a73aa6b632b317ebfac596dcbaf4edfb1301b513f45465ea75328962460f35e2af0d7e547c9ac
2eb0eeda39 validation: document lack of inherited signaling in RBF policy (Antoine Riard)
906b6d9da6 test: Extend feature_rbf.py with no inherited signaling (Antoine Riard)
Pull request description:
Contrary to BIP125 or other full-node implementation (e.g btcd), Bitcoin Core's mempool policy doesn't implement inherited signaling.
This PR documents our mempool behavior on this and add a test demonstrating the case.
ACKs for top commit:
jonatack:
ACK 2eb0eeda39
benthecarman:
ACK 2eb0eeda39
Tree-SHA512: d41453d3b49bae3c1eb532a968f43bc047084913bd285929d4d9cba142777ff2be38163d912e28dfc635f4ecf446de68effad799c6e71be52f81e83410c712fb
* Rename RewindBlockIndex -> NeedsRedownload (follow-up to commit
d831e711ca)
* Fix typos
* Inline comments about faking chain data to avoid duplicating them
13650fe2e5 [policy] detect unsorted packages (glozow)
9ef643e21b [doc] add release note for package testmempoolaccept (glozow)
c4259f4b7e [test] functional test for packages in RPCs (glozow)
9ede34a6f2 [rpc] allow multiple txns in testmempoolaccept (glozow)
ae8e6df709 [policy] limit package sizes (glozow)
c9e1a26d1f [fuzz] add ProcessNewPackage call in tx_pool fuzzer (glozow)
363e3d916c [test] unit tests for ProcessNewPackage (glozow)
cd9a11ac96 [test] make submit optional in CreateValidMempoolTransaction (glozow)
2ef187941d [validation] package validation for test accepts (glozow)
578148ded6 [validation] explicit Success/Failure ctors for MempoolAcceptResult (glozow)
b88d77aec5 [policy] Define packages (glozow)
249f43f3cc [refactor] add option to disable RBF (glozow)
897e348f59 [coins/mempool] extend CCoinsViewMemPool to track temporary coins (glozow)
42cf8b25df [validation] make CheckSequenceLocks context-free (glozow)
Pull request description:
This PR enables validation dry-runs of packages through the `testmempoolaccept` RPC. The expectation is that the results returned from `testmempoolaccept` are what you'd get from test-then-submitting each transaction individually, in that order (this means the package is expected to be sorted in topological order, for now at least). The validation is also atomic: in the case of failure, it immediately halts and may return "unfinished" `MempoolAcceptResult`s for transactions that weren't fully validated. The API for 1 transaction stays the same.
**Motivation:**
- This allows you to test validity for transaction chains (e.g. with multiple spending paths and where you don't want to broadcast yet); closes#18480.
- It's also a first step towards package validation in a minimally invasive way.
- The RPC commit happens to close#21074 by clarifying the "allowed" key.
There are a few added restrictions on the packages, mostly to simplify the logic for areas that aren't critical to main package use cases:
- No package can have conflicts, i.e. none of them can spend the same inputs, even if it would be a valid BIP125 replacement.
- The package cannot conflict with the mempool, i.e. RBF is disabled.
- The total count of the package cannot exceed 25 (the default descendant count limit), and total size cannot exceed 101KvB (the default descendant size limit).
If you're looking for review comments and github isn't loading them, I have a gist compiling some topics of discussion [here](https://gist.github.com/glozow/c3acaf161c95bba491fce31585b2aaf7)
ACKs for top commit:
laanwj:
Code review re-ACK 13650fe2e5
jnewbery:
Code review ACK 13650fe2e5
ariard:
ACK 13650fe
Tree-SHA512: 8c5cbfa91a6c714e1c8710bb281d5ff1c5af36741872a7c5df6b24874d6272b4a09f816cb8a4c7de33ef8e1c2a2c252c0df5105b7802f70bc6ff821ed7cc1a2f
Maximum number of transactions allowed in a package is 25, equal to the
default mempool descendant limit: if a package has more transactions
than this, either it would fail default mempool descendant limit or the
transactions don't all have a dependency relationship (but then they
shouldn't be in a package together). Same rationale for 101KvB virtual
size package limit.
Note that these policies are only used in test accepts so far.
Only allow test accepts for now. Use the CoinsViewTemporary to keep
track of coins created by each transaction so that subsequent
transactions can spend them. Uncache all coins since we only
ever do test accepts (Note this is different from ATMP which doesn't
uncache for valid test_accepts) to minimize impact on the coins cache.
Require that the input txns have no conflicts and be ordered
topologically. This commit isn't able to detect unsorted packages.
Allow CheckSequenceLocks to use heights and coins from any CoinsView and
CBlockIndex provided. This means that CheckSequenceLocks() doesn't need
to hold the mempool lock or cs_main. The caller is responsible for
ensuring the CoinsView and CBlockIndex are consistent before passing
them in. The typical usage is still to create a CCoinsViewMemPool from
the mempool and grab the CBlockIndex from the chainstate tip.
d66f283ac0 scripted-diff: Replace three dots with ellipsis in the UI strings (Hennadii Stepanov)
Pull request description:
This PR is split from #21463.
The change was suggested on [Transifex.com](https://www.transifex.com/bitcoin/bitcoin/), and it does not touch `LogPrint` and `LogPrintf` calls.
The only comment on #21463 [was](9030e4b5a6 (r597220100)):
> Mind that these messages also end up in the log. In principle the log is already UTF-8 (as are all strings and text in bitcoind). But, just noting, that it might make browsing the log a less pleasant experience on systems with misconfigured locale like some BSDs by default.
ACKs for top commit:
laanwj:
ACK d66f283ac0
Tree-SHA512: 5ab1cb3160f3f996f1ad7d7486662da3eb7f06a857f4a1874963ce10caed5b86b0ad6151b1b9ebeb2b8aa5f0c85efad3b768ea9cafe5db86f78f88912b756d1e
91d93aac4e validation: remove nchaintx from assumeutxo metadata (James O'Beirne)
931684b24a validation: fix ActivateSnapshot to use hardcoded nChainTx (James O'Beirne)
Pull request description:
This fixes an oversight from the move of nChainTx from the user-supplied
snapshot metadata into the hardcoded assumeutxo chainparams.
Since the nChainTx is now unused in the metadata, it should be removed
in a future commit.
See: https://github.com/bitcoin/bitcoin/pull/19806#discussion_r612165410
ACKs for top commit:
Sjors:
utACK 91d93aac4e
ryanofsky:
Code review ACK 91d93aac4e. No change to previous commit, just new commit removing now unused utxo snapshot field and updating tests.
Tree-SHA512: 445bdd738faf007451f40bbcf360dd1fb4675e17a4c96546e6818c12e33dd336dadd95cf8d4b5f8df1d6ccfbc4bf5496864bb5528e416cea894857b6b732140c
5f96d7d22d rpc: gettxoutsetinfo rejects hash_serialized_2 for specific height (Fabian Jahr)
23fe50436b test: Add test for coinstatsindex behavior in reorgs (Fabian Jahr)
90c966b0f3 rpc: Allow gettxoutsetinfo and getblockstats for stale blocks (Fabian Jahr)
b9362392ae index, rpc: Add use_index option for gettxoutsetinfo (Fabian Jahr)
bb7788b121 test: Test coinstatsindex robustness across restarts (Fabian Jahr)
e0938c2909 test: Add tests for block_info in gettxoutsetinfo (Fabian Jahr)
2501576ecc rpc, index: Add verbose amounts tracking to Coinstats index (Fabian Jahr)
655d929836 test: add coinstatsindex getindexinfo coverage, improve current tests (Jon Atack)
ca01bb8d68 rpc: Add Coinstats index to getindexinfo (Fabian Jahr)
57a026c30f test: Add unit test for Coinstats index (Fabian Jahr)
6a4c0c09ab test: Add functional test for Coinstats index (Fabian Jahr)
3f166ecc12 rpc: gettxoutsetinfo can be requested for specific blockheights (Fabian Jahr)
3c914d58ff index: Coinstats index can be activated with command line flag (Fabian Jahr)
dd58a4de21 index: Add Coinstats index (Fabian Jahr)
a8a46c4b3c refactor: Simplify ApplyStats and ApplyHash (Fabian Jahr)
9c8a265fd2 refactor: Pass hash_type to CoinsStats in stats object (Fabian Jahr)
2e2648a902 crypto: Make MuHash Remove method efficient (Fabian Jahr)
Pull request description:
This is part of the coinstats index project tracked in #18000
While the review of the new UTXO set hash algorithm (MuHash) takes longer recently #19328 was merged which added the possibility to run `gettxoutsetinfo` with a specific hash type. As the first type it added `hash_type=none` which skips the hashing of the UTXO set altogether. This alone did not make `gettxoutsetinfo` much faster but it allows the use of an index for the remaining coin statistics even before a new hashing algorithm has been added. Credit to Sjors for the idea to take this intermediate step.
Features summary:
- Users can start their node with the option `-coinstatsindex` which syncs the index in the background
- After the index is synced the user can use `gettxoutsetinfo` with `hash_type=none` or `hash_type=muhash` and will get the response instantly out of the index
- The user can specify a height or block hash when calling `gettxoutsetinfo` to see coin statistics at a specific block height
ACKs for top commit:
Sjors:
re-tACK 5f96d7d22d
jonatack:
Code review re-ACK 5f96d7d22d per `git range-diff 13d27b4 07201d3 5f96d7d`
promag:
Tested ACK 5f96d7d22d. Light code review ACK 5f96d7d22d.
Tree-SHA512: cbca78bee8e9605c19da4fbcd184625fb280200718396c694a56c7daab6f44ad23ca9fb5456d09f245d8b8d9659fdc2b3f3ce5e953c1c6cf4003dbc74c0463c2
844ad0ecca doc: IsSnapshotActive (James O'Beirne)
9b604c0207 validation: prepare VerifyDB for assumeutxo (James O'Beirne)
7901647d72 refactor: rename active_chainstate in VerifyDB (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11) (parent PR: #15606)
---
~~Pretty cut and dry; parameterizes `CVerifyDB` methods so that we can run the verify procedure on multiple chainstates.~~
Two minor tweaks to ensure that `VerifyDB` can be run on multiple chainstates and a corresponding rename.
ACKs for top commit:
fjahr:
Code review re-ACK 844ad0ecca
MarcoFalke:
review ACK 844ad0ecca🐥
Tree-SHA512: 26a398cf4dabc1aa0850743921dba0452b4813848a3c777586dc981716737e98e17b8110254a5c41af95dd236e0c00dc8b4eee891d69bef825a5e1911fc499d0
However, keep a declaration in validation to make it possible to move
smaller chunks to blockstorage without breaking compilation.
Also, expose AbortNode in the header.
Can be reviewed with --color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
d831e711ca [validation] RewindBlockIndex no longer needed (Dhruv Mehta)
Pull request description:
Closes#17862
Context from [original comment](https://github.com/bitcoin/bitcoin/issues/17862#issuecomment-744285188) (minor edits):
`RewindBlockIndex()` is a mechanism to allow nodes to be upgraded after segwit activation, while still keeping their chainstate/datadir in a consistent state. It works as follows:
- A pre-segwit (i.e. v0.13.0 or older) node is running.
- Segwit activates. The pre-segwit node remains sync'ed to the tip, but is not enforcing the new segwit rules.
- The user upgrades the node to a segwit-aware version (v0.13.1 or newer).
- On startup, in `AppInitMain()`, `RewindBlockIndex()` is called. This walks the chain backwards from the tip, disconnecting and erasing blocks that from after segwit activation that weren't validated with segwit rules.
- those blocks are then redownloaded (with witness data) and validated with segwit rules.
This logic probably isn't required any more since:
- Segwit activated at height 481824, when the block chain was 130GB and the total number of txs was 250 million. Today, we're at height 667704, the blockchain is over 315GB and the total number of txs is over 600 million. Even if 20% of that added data is witness data (a high estimate), then around 150GB of transactions would need to be rewound to get back to segwit activation height. It'd probably be faster to simply validate from genesis, especially since we won't be validating any scripts before the assumevalid block. It's also unclear whether rewinding 150GB of transactions would even work. It's certainly never been tested.
- Bitcoin Core v0.13 is hardly used any more. https://luke.dashjr.org/programs/bitcoin/files/charts/software.html shows less than 50 nodes running it. The software was EOL on Aug 1st 2018. It's very unlikely that anyone is running 0.13 and will want to upgrade to 0.22.
This PR introduces `NeedsRedownload()` which merely checks for insufficiently validated segwit blocks and requests that the user restarts the node with `-reindex`. Reindexing the block files upon restart will make the node rebuild chain state and block index from the `blk*.dat` files on disk. The node won't be able to index the blocks with `BLOCK_OPT_WITNESS`, so they will be missing from the chain and be re-downloaded, with witness data.
Removing this code allows the following (done in follow-up #21090):
- removal of tests using `segwitheight=-1` in `p2p_segwit.py`.
- in turn, that allows us to drop support for `-segwitheight=-1`, which is only supported for that test.
- that allows us to always set `NODE_WITNESS` in our local services. The only reason we don't do that is to support `-segwitheight=-1`.
- that in turn allows us to drop all of the `GetLocalServices() & NODE_WITNESS` checks inside `net_processing.cpp`, since our local services would always include `NODE_WITNESS`
ACKs for top commit:
jnewbery:
utACK d831e711ca
jamesob:
ACK d831e711ca
laanwj:
Cursory code review ACK d831e711ca. Agree with the direction of the change, thanks for simplifying the logic here.
glozow:
utACK d831e711ca
Tree-SHA512: 3eddf5121ccd081ad7f15a5c6478ef867083edc8ba0bf1ee759e87bc070ee3d2f0698a3feba8db8dc087987c8452887b6f72cff05b3e178f41cb10a515fb8053
