38005f6aa7 Use Target for pow_limit (Tobin C. Harding)
Pull request description:
The `Params::pow_limit` field is currently a `Work` type, this is incorrect. The proof of work limit is the highest _target_ not the lowest work (even though these have a relationship).
Note that we use the highest _attainable_ target, this differs from Bitcoin Core and the reasoning is already documented in the code.
Add new consts and document where they came from as well as how they differ to Core.
Use the new consts in the various network specific `Params` types.
Fix: #2106
ACKs for top commit:
junderw:
ACK 38005f6aa7
apoelstra:
ACK 38005f6aa7
Tree-SHA512: 5e71f69cdd555fd95a52fc1479e27b5e11226772f6432758c1364107a068bd1271486da6db1ece694da0287ce10cfbc18d28d6e3dbb0b9d387ff968eea43ab18
The `Params::pow_limit` field is currently a `Work` type, this is
incorrect. The proof of work limit is the highest _target_ not the
lowest work (even though these have a relationship).
Note that we use the highest _attainable_ target, this differs from
Bitcoin Core and the reasoning is already documented in the code.
Add new consts and document where they came from as well as how they
differ to Core.
Use the new consts in the various network specific `Params` types.
We have a new API function available with recent version of `secp256k1`
to create a `Message` directly from a sighash byte array.
Use `Message::from_digest(sighash.to_byte_array())` to construct
messages ready to sign.
Upgrade the `secp256k1` dependency to the newly released `v0.28.0`.
FTR this includes two simple changes:
- Use `Message::from_digest_slice` instead of `Message::from_slice`.
- Use `secp256k1::Keypair` instead of `secp256k1::KeyPair`.
In preparation for updating the secp dependency to v0.28.0, which
includes a change of `KeyPair` to `Keypair`, change our identifier usage
to indicate that "keypair" is a single word.
Deprecate the old forms.
Update the `bech32` dependency to use the newly release beta version.
The main fix here is silent, a bug fix in `bech32` that was being hit by
our fuzzing suite.
6b5d06f23e ci: fix the byteorder to 1.4.3 for edition 2018 (Vincenzo Palazzo)
98513ef151 clippy: more worning fixes (Vincenzo Palazzo)
05d3dc5d72 Remove redundant guard (Tobin C. Harding)
4537634e7e ci: bump rustc to 1.60 for fuzz test (Vincenzo Palazzo)
Pull request description:
Ci looks like broken, so this should fix
it
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apoelstra:
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8eff4d0385 Remove private hex test macro (Tobin C. Harding)
Pull request description:
We have this macro in `hex-conservative` now, remove the version here.
This patch does not change the public API and only touches test code.
ACKs for top commit:
apoelstra:
ACK 8eff4d0385
clarkmoody:
ACK 8eff4d0385
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10374af75c Make error types uniform (Tobin C. Harding)
43d3306822 Use explicit error::Error impl instead of the default (Tobin C. Harding)
2512dbafc2 Remove impl_std_error macro (Tobin C. Harding)
6933ca4fc2 Add suffix to HiddenNodes error type (Tobin C. Harding)
2b40ea24fb Add suffix to IncompleteBuilder error type (Tobin C. Harding)
f41416a0ea Add suffix to UnknownMagic error type (Tobin C. Harding)
5658dac024 Add suffix to UnknownChainHash error type (Tobin C. Harding)
2fb71dd943 Move p2p error types to bottom of file (Tobin C. Harding)
39314ad52f Move error code to match conventional layout (Tobin C. Harding)
Pull request description:
PR aims to achieve two things:
- Make error code brain dead easy to read
- Get error code closer to being ready for v1.0
The first 8 patches are pretty basic, and are broken up into really small changes. The last patch is much bigger, it has a long git log to explain it but reviewing should not take too much brain power.
This PR does not introduce anything new, it just applies what we have been doing recently with errors. Before v1.0.0 others will likely want to re go over all the error types. As such I believe this PR can be merged under the one ack carve-out.
### TODOs (future PRs)
We have a few errors that still need splitting up:
- Split up `merkle_tree::block::MerkleBlockError`
- Split up `psbt::error::Error`
- Split up `IncompleteBuilderError`
Also, all error From's should probably have `#[inline]`, I noticed late in the process and did not have the heart to visit every error again.
ACKs for top commit:
apoelstra:
ACK 10374af75c
clarkmoody:
ACK 10374af75c
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On our way to v1.0.0 we are defining a standard for our error types,
this includes:
- Uses the following derives (unless not possible, usually because of `io::Error`)
`#[derive(Debug, Clone, PartialEq, Eq)]`
- Has `non_exhaustive` unless we really know we can commit to not adding
anything.
Furthermore, we are trying to make the codebase easy to read. Error code
is write-once-read-many (well it should be) so if we make all the error
code super uniform the users can flick to an error and quickly see what
it includes. In an effort to achieve this I have made up a style and
over recent times have change much of the error code to that new style,
this PR audits _all_ error types in the code base and enforces the
style, specifically:
- Is layed out: definition, [impl block], Display impl, error::Error impl, From impls
- `error::Error` impl matches on enum even if it returns `None` for all variants
- Display/Error impls import enum variants locally
- match uses *self and `ref e`
- error::Error variants that return `Some` come first, `None` after
Re: non_exhaustive
To make dev and review easier I have added `non_exhaustive` to _every_
error type. We can then remove it error by error as we see fit. This is
because it takes a bit of thinking to do and review where as this patch
should not take much brain power to review.
In a further effort to make the code brain-dead easy to read; use an
explicit implementation of `std::error::Error` that returns `None`
instead of relying on the default trait implementation.
We would like the codebase to be optimized for readability not ease of
development, as such code that is write-once-read-many should not use
macros.
Currently we use the `impl_std_error` macro to implement
`std::error::Error` for struct error types. This makes the code harder
to read at a glance because one has to think what the macro does.
Remove the `impl_std_error` macro and write the code explicitly.
752adff9d1 Add method calc_height (Tobin C. Harding)
46f5588646 Add unit test for calc_tree_width (Tobin C. Harding)
Pull request description:
Add a private `PartialMerkleTree::calc_tree_width` function and a unit test to test it.
ACKs for top commit:
apoelstra:
ACK 752adff9d1
clarkmoody:
ACK 752adff9d1
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3b60ad5567 example: Modify `taproot-psbt.rs` to make the use of prevouts clearer. (S. Santos)
Pull request description:
The `taroot-psbt.rs` example uses only one input, and therefore the current code may not make it clear that the number of prevout items must correspond to the number of transaction inputs, since the prevout slice is built within a loop.
This PR aims to make this clear to any user who wants to reuse the logic from the example code.
ACKs for top commit:
tcharding:
ACK 3b60ad5567
apoelstra:
ACK 3b60ad5567
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dac627cc09 Feature: Psbt fee checks (junderw)
Pull request description:
Closes#2061
These new methods on Psbt will add checks for high fees by default. The threshold for "high fees" is currently set to 25000 sat/vbyte, which is about 20x higher than the highest next block fees seen on the "Mempool" website.
The primary goal of this change is to prevent users of the library from accidentally sending absurd amounts of fees.
(ie. Recently in September 2023 there was a transaction that sent an absurd amount of fees and made news in the Bitcoin world. Luckily the mining pool gave it back, but some might not be so lucky.)
There are variants of the method that allow for users to set their own "absurd" threshold using a `FeeRate` value. And there is a method that performs no checks, and the method name is alarming enough to draw attention in a review, so at least developers will be aware of the concept.
ACKs for top commit:
apoelstra:
ACK dac627cc09
tcharding:
ACK dac627cc09
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c34e3cc7cc Re-write size/weight API (Tobin C. Harding)
73f7fbf520 Add code comments to transaction serialization (Tobin C. Harding)
29f20c1d0b Add segwit serialization constants (Tobin C. Harding)
Pull request description:
Audit and re-write the weight/size API for `Block` and `Transaction`. First two patches are trivial, patch 3 contains justification and explanation for this work, copied here:
```
Recently we introduced a bug in the weight/size code, while
investigating I found that our `Transaction`/`Block` weight/size APIs
were in a total mess because:
- The docs were stale
- The concept of weight (weight units) and size (bytes) were mixed up
I audited all the API functions, read some bips (141, 144) and re-wrote
the API with the following goals:
- Use terminology from the bips
- Use abstractions that mirror the bips where possible
```
Please note, this PR introduces panics if a sciptPubkey overflows the calculation `weight = spk.size() * 4`.
Fix#2049
ACKs for top commit:
apoelstra:
ACK c34e3cc7cc
sanket1729:
ACK c34e3cc7cc.
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5901d35095 Add push_p2wpkh function on Witness (Tobin C. Harding)
8cd409d561 Deprecate push_bitcoin_signature (Tobin C. Harding)
Pull request description:
In order to create the witness to spend p2wpkh output one must create a `Witness` that includes the signature and the pubkey, we should have a function for this.
## Notes
The PR originally added a `push_p2wphk` method, this is now instead a constrcutor `Witness:p2wpkh` (after review discussion below).
- Patch 1 changes `push_bitcoin_signature` to take an `ecdsa::Sigtnture` instead of an `ecdsa::SerializedSignature`
- Patch 2 takes a `secp256k1::PublicKey` removing the need for an error path (discussed below).
ACKs for top commit:
sanket1729:
ACK 5901d35095
apoelstra:
ACK 5901d35095
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24e5e19ed0 Add changelog entries (Tobin C. Harding)
79f2157311 bitcoin: Grab changelog entry from 0.30.1 release (Tobin C. Harding)
Pull request description:
Gearing up for the next release add changelog entries for everything merged upto July 24.
ACKs for top commit:
apoelstra:
ACK 24e5e19ed0
clarkmoody:
ACK 24e5e19ed0
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Recently we introduced a bug in the weight/size code, while
investigating I found that our `Transaction`/`Block` weight/size APIs
were in a total mess because:
- The docs were stale
- The concept of weight (weight units) and size (bytes) were mixed up
I audited all the API functions, read some bips (141, 144) and re-wrote
the API with the following goals:
- Use terminology from the bips
- Use abstractions that mirror the bips where possible
The `Witness::push_bitcoin_signature` method is old and a bit stale.
Bitcoin has taproot signatures now so the name is stale, also we have
the `crate::ecdsa::Signature` type that holds the secp sig and the hash
type so we can use that instead of having two separate parameters.
Add a new, up to date, `Witness::push_ecdsa_signature` function and
deprecate the `push_bitcoin_signature` one.
There is no logical default for the transaction version number, there is
only pre-bip68 (v1) and post-bip68 (v2). Uses should specify the version
they want not rely on us making the choice.
(I originally added this impl to support testing, this was in hindsight
the wrong thing to do, props to Sanket for noticing.)
One of our stated aims is to make it possible to learn bitcoin by using
our library. To help with this aim add to private consts for the segwit
transaction marker and flag serialization fields.
158ba26a8a Feature: Count sigops for Transaction (junderw)
Pull request description:
I copied over the sigop counting logic from Bitcoin Core, but I made a few adjustments.
1. I removed 2 consensus flags that checked for P2SH and SegWit activation. This code assumes both are activated. If we were to include that, what would be a good way to go about it? (ie. If I run this method on a transaction from the 1000th block and it just so happened to have a P2SH-like input, Bitcoin Core wouldn't accidentally count those sigops because the consensus flag will stop them from running the P2SH logic. Same goes for SegWit)
3. Since there's no guarantee that we have an index from which we can get the prevout scripts, I made it into a generic closure that looks up the prevout script for us. If the caller doesn't provide it, We can only count sigops directly in the scriptSig and scriptPubkey (no P2SH or SegWit).
## TODO
- [x] Write tests for transaction sigop counting
~~Edit: The test changes are just to get the 1.48 tests passing. I'll remove them and replace them with whatever solution that is agreed upon in another PR etc.~~
Edit 2: This is the code I used as a guide:
8105bce5b3/src/consensus/tx_verify.cpp (L147-L166)
Edit 3: I found a subtle bug in the implementation of `count_sigops` (https://github.com/rust-bitcoin/rust-bitcoin/pull/2073#issuecomment-1722403687)
ACKs for top commit:
apoelstra:
ACK 158ba26a8a
tcharding:
ACK 158ba26a8a
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e4c7e01a6f Use the new bech32 iterator API (Tobin C. Harding)
Pull request description:
Depend on the newly released version of `bech32`, BOOM!
ACKs for top commit:
apoelstra:
ACK e4c7e01a6f
clarkmoody:
ACK e4c7e01a6f
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95b7a95fc2 test: correct psbt used for regression test (Subhradeep Chakraborty)
Pull request description:
The `unknown` key used in the `Psbt` (in `serde_regression_psbt` test) is not really unknown. Also the `preimages` in the `Input` don't seem to be valid. Though they don't affect the tests because of the `serde::serialize`, the `Psbt` itself is invalid and hence this PR.
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tcharding:
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apoelstra:
ACK 95b7a95fc2
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b2a7d7023c Rename XpubIdentifier to XKeyIdentifier (Tobin C. Harding)
ffd2466ad1 Move XpubIdentifier to the bip32 module (Tobin C. Harding)
Pull request description:
- Patch 1: Move the hash to the `bip32` module where it is used, as we have done with other hashes recently (and re-export it at crate root).
- Patch 2: Rename the hash to `XKeyIdentifier` as discussed in #2014Fix: #2014
ACKs for top commit:
apoelstra:
ACK b2a7d7023c
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Tobin C. Harding
Andrew Poelstra
Vincenzo Palazzo
sanket1729
S. Santos
junderw
Clark Moody