Commit Graph

1442 Commits

Author SHA1 Message Date
Tobin C. Harding b24a112f08 Remove calls to clone from types that implement Copy
Clippy emits:

  warning: using `clone` on type `blockdata::transaction::OutPoint`
  which implements the `Copy` trait

Remove calls to `clone` from types that implement `Copy`.
2022-06-07 15:26:59 +10:00
Tobin C. Harding 2b8d93ec4b Remove unnecessary explicit reference
Clippy warns about creating a reference that is immediately
de-referenced.

Remove unnecessary explicit `&`, while we are at it remove unnecessary
explicit types that appear on the same lines of code.
2022-06-07 15:26:59 +10:00
Tobin C. Harding ef90e3d4ed Use plus-equals operator
Clippy emits:

  warning: manual implementation of an assign operation

Use the more conventional `+=` operator.
2022-06-07 15:15:26 +10:00
Tobin C. Harding 922b820105 Replace assert!(false) with panic!
Clippy emits:

  warning: `assert!(false)` should probably be replaced

As suggested, replace assert with a call to panic.
2022-06-07 15:15:26 +10:00
Tobin C. Harding a8039e1742 Remove redundant clone
Clippy emits:

  warning: redundant clone

Remove the redundant calls to clone.
2022-06-07 15:15:26 +10:00
Tobin C. Harding cf8de73169 Remove unnecessary cast of integer literal
Clippy emits:

  warning: casting integer literal to `usize` is unnecessary

Remove the unnecessary cast.
2022-06-07 15:15:26 +10:00
Tobin C. Harding 999ac450bb Do not use assert_eq with literal bool
Clippy emits:

  warning: used `assert_eq!` with a literal bool

Use `assert!` instead of `assert_eq!(foo, true)`.
2022-06-07 15:15:25 +10:00
Tobin C. Harding abfeb32e35 Remove unnecessary local variable
In test functions; we bind to `istream` only to re-bind immediately to
`stream`, this is unnecessary and adds no additional information to the
code.
2022-06-07 14:56:06 +10:00
Tobin C. Harding 04b09a4e8d Remove unused loop
We only simulate a single connection in the test function `serve_tcp`.
Remove the unused loop (includes an unconditional break after first
iteration) and use `next` directly.

Found by clippy. Refactor only, no logic changes.
2022-06-07 14:56:06 +10:00
Tobin C. Harding 380e0016cc Use write_all instead of write
In this unit test we want to write all the pieces, use `write_all`.

Clears clippy warning about not using return value of `write`.
2022-06-07 14:55:54 +10:00
Tobin C. Harding 827fcd8a89 Allow unusual digit grouping
Clippy emits:

  warning: digits grouped inconsistently by underscores

Add allow directive for grouping that aims to make explicit 100,000,000
sats/per bitcoin.
2022-06-07 14:29:15 +10:00
Tobin C. Harding 242c640603 Remove redundant field names
Clippy emits:

  warning: redundant field names in struct initialization

As suggested, remove redundant field names in struct initialization.
2022-06-07 14:26:57 +10:00
Tobin C. Harding 0f8f4c5609 Collapse if statements
Clippy emits:

  warning: this `if` statement can be collapsed

As suggested, collapse the if statements into a single statement, with
no loss of clarity.
2022-06-07 14:24:44 +10:00
Tobin C. Harding 229fcb9f1f Use if let instead of destructuring pattern
Clippy emits:

 warning: you seem to be trying to use `match` for destructuring a
 single pattern. Consider using `if let`

As suggested, use `if let`.
2022-06-07 14:22:38 +10:00
Dawid Ciężarkiewicz 42a91ab32a Expose SIGHASH_SINGLE bug in `encode_signing_data_to`
Via `Option` return value

Fix #1015
2022-06-06 19:17:01 -07:00
Andrew Poelstra a9365375c1
Merge rust-bitcoin/rust-bitcoin#1037: Document `Txid` being displayed backwards
28049ce2d9 Document `Txid` being displayed backwards (Dawid Ciężarkiewicz)

Pull request description:

  Fix #958

  I hope putting it on the most notorious type where people actually notice it is enough. I couldn't find a good way to put it on all other `sha256d` automatically, and copy pasting it seems not worth it.

ACKs for top commit:
  tcharding:
    ACK 28049ce2d9
  apoelstra:
    ACK 28049ce2d9

Tree-SHA512: a5acf5d7a73361a6c48b45ed264fafb911930ae9f1bdb03895dc39c679d508dc56dbf44896fd38cf6569abb652e7fce721028ef06344462747a77078ef5a8f4f
2022-06-06 11:35:13 +00:00
Dawid Ciężarkiewicz 28049ce2d9 Document `Txid` being displayed backwards
Fix #958
2022-06-04 12:08:16 -07:00
Andrew Poelstra de17554a3c
Merge rust-bitcoin/rust-bitcoin#1033: Avoid allocation in build_scriptint
c80dbc2169 Avoid allocation in build_scriptint (Steven Roose)

Pull request description:

  Hehe, reason for party, let's invite apoelstra !

ACKs for top commit:
  apoelstra:
    ACK c80dbc2169
  tcharding:
    ACK c80dbc2169

Tree-SHA512: 8446e765d8b9fa562f636817327db6fad4bb9c906d3f69fda76e61cd258fc4c296e6ffaa440a357125c2ab45603eb05c58cb8d6822deea2fe5746e5c7c3f1e4d
2022-06-03 18:27:21 +00:00
Steven Roose c80dbc2169
Avoid allocation in build_scriptint 2022-06-02 15:36:45 +01:00
Andrew Poelstra 21f4493813
Merge rust-bitcoin/rust-bitcoin#1032: Remove network::Error
99aab446c3 Remove network::Error (Tobin C. Harding)

Pull request description:

  The `network::Error` is not used, remove it.

  (This description has been changed, the thumbs up emojis were put on the previous PR description.)

ACKs for top commit:
  sanket1729:
    reACK 99aab446c3
  apoelstra:
    ACK 99aab446c3

Tree-SHA512: 2342531160966860b7b65f8c5df10e169876ec446e6fd30093d5d81d0b0304cad04e2c2057eb3ca6b23a2fc56453c91ad4ddf426d3796fb301acb7f7d03a66b9
2022-06-02 14:14:41 +00:00
Andrew Poelstra adf3958127
Merge rust-bitcoin/rust-bitcoin#1011: Add non_exhaustive compiler directive to `AddressType`
43b684bbe6 Add non_exhaustive compiler directive to AddressType (Tobin C. Harding)

Pull request description:

  Add non_exhaustive compiler directive to AddressType

  Currently adding variants to enums is a breaking change. In an effort to
  reduce the upgrade burden on users we can use the `non_exhaustive`
  compiler directive so that adding a new variant does not cause
  downstream code to break.

  Add `non_exhaustive` to the `AddressType` since it may be extended in
  the future.

ACKs for top commit:
  sanket1729:
    ACK 43b684bbe6
  Kixunil:
    ACK 43b684bbe6
  apoelstra:
    ACK 43b684bbe6

Tree-SHA512: 2b2a15fb501d23058acca94318776ffcccedf463d43d07afa290fba46a7bd58b3a730f6e1f25605ef399afcfdb5de4c7ad67eaa0adff0ba39b0096cbcec10f57
2022-06-02 14:13:52 +00:00
Tobin C. Harding 43b684bbe6 Add non_exhaustive compiler directive to AddressType
Currently adding variants to enums is a breaking change. In an effort to
reduce the upgrade burden on users we can use the `non_exhaustive`
compiler directive so that adding a new variant does not cause
downstream code to break.

Add `non_exhaustive` to the `AddressType` since it may be extended in
the future.
2022-06-02 12:43:25 +10:00
Tobin C. Harding 99aab446c3 Remove network::Error
The `network::Error` is not used, remove it.
2022-06-02 09:49:33 +10:00
Andrew Poelstra 09b4198b16
Merge rust-bitcoin/rust-bitcoin#1031: refactor: remove SchnorrSignatureHash::Reserved variant
69707b0ccd refactor: remove SchnorrSignatureHash::Reserved variant (eunoia_1729)

Pull request description:

  Resolves #1030

ACKs for top commit:
  sanket1729:
    utACK 69707b0ccd. For reference to other reviewers:
  tcharding:
    ACK 69707b0ccd
  apoelstra:
    ACK 69707b0ccd

Tree-SHA512: d5afe9217e15db8dfd7d712e2fa69d22acda0f93fd7efbc80cf9459303a135a69c8ddf43842584769accb8cffba722ec202dc51f100e0f50262b2561a2fb1699
2022-06-01 23:27:30 +00:00
sanket1729 165cae959a
Merge rust-bitcoin/rust-bitcoin#1003: Improve error `Display` implementations
57dd6739c3 Do not print error when displaying for std builds (Tobin C. Harding)
b80cfeed85 Bind to error_kind instead of e (Tobin C. Harding)
241ec72497 Bind to b instead of e (Tobin C. Harding)
01f481bf5c Bind to s instead of e (Tobin C. Harding)
5c6d369289 network: Remove unused error variants (Tobin C. Harding)
e67e97bb37 Put From impl below std::error::Error impl (Tobin C. Harding)
6ca98e5275 Remove error TODO (Tobin C. Harding)

Pull request description:

  As part of the ongoing error improvement work and as a direct result of [this comment](https://github.com/rust-bitcoin/rust-bitcoin/pull/987#issuecomment-1135563287) improve the `Display` implementations of all our error types so as to not repeat the source error when printing.

  The first 5 patches are trivial clean ups around the errors. Patch 6 is the real work.

  EDIT: ~CC @Kixunil, have I got the right idea here bro?~ Patch 6 now includes a macro as suggested.

ACKs for top commit:
  Kixunil:
    ACK 57dd6739c3
  apoelstra:
    ACK 57dd6739c3
  sanket1729:
    ACK 57dd6739c3. Did not check if we covered all cases. We need to remember to use `write_err!` instead of `write!` in future.

Tree-SHA512: 1ed26b0cc5f9a0f71684c431cbb9f94404c116c9136be696434c56a2f56fd93cb5406b0955edbd0dc6f8612e77345c93fa70a70650118968cc58e680333a41de
2022-06-01 15:17:24 -07:00
sanket1729 911a9ec579
Merge rust-bitcoin/rust-bitcoin#1018: Add more documentation to some core types
1875c912c3 Extend docstring for more types (Dawid Ciężarkiewicz)
325ea8fb7d Add "Relevant BIPs` to `Address` (Dawid Ciężarkiewicz)
7c2ca3d20b Add `BlockHeader` Bitcoin Core reference link (Dawid Ciężarkiewicz)
f4922f6fe7 Update `BlockHeader::version` documentation (Dawid Ciężarkiewicz)

Pull request description:

  This is meant to make it more educational, and handy even for experienced developers.

  A first step to make https://docs.rs/bitcoin (or `cargo doc --open`) a go-to place for
  convenient Bitcoin documentation.

ACKs for top commit:
  tcharding:
    tACK 1875c912c3
  apoelstra:
    ACK 1875c912c3
  sanket1729:
    utACK 1875c912c3. Thanks for doing this.

Tree-SHA512: 8457e120f9979bfd95e55e8b18faf6131610aa2241f8e5fc4630fe61dc7e16ddfc35fb6eff46339804016db7b176465943cc0c02d84dcf478ed55da9f5e06fc5
2022-06-01 15:06:35 -07:00
eunoia_1729 69707b0ccd
refactor: remove SchnorrSignatureHash::Reserved variant 2022-06-02 03:18:58 +05:30
sanket1729 471f90923d
Merge rust-bitcoin/rust-bitcoin#1006: Feature `use-serde` renamed to `serde`
2e7effc604 Feature `use-serde` renamed to `serde` (Martin Habovstiak)

Pull request description:

  Features activating external crates are supposed to have same name as
  those crates. However we depend on same feature in other crates so we
  need a separate feature. After MSRV bump it is possible to rename the
  crates and features so we can now fix this inconsistency.

  Sadly, derive can't see that the crate was renamed so all derives must
  be told to use the other one.

  Replaces #373

ACKs for top commit:
  apoelstra:
    ACK 2e7effc604

Tree-SHA512: b20364b9e8f30c2269bef915e821b2b2ec929e71dd0e88af2bc3a021821f87011d35e095cb8efe99add77a23dde940a17537eb387fb4582b05c57c8679969eb0
2022-06-01 14:29:02 -07:00
sanket1729 e9a3379228
Merge rust-bitcoin/rust-bitcoin#878: Add chain hash type using consts
8e29f2b493 Add ChainHash type (Tobin Harding)
cd8f511fcb blockdata: constants: Use wildcard import in unit tests (Tobin Harding)
71bf19621a Use fully qualified path in macro (Tobin Harding)

Pull request description:

  The Lightning network defines a type called 'chain hash' that is used to uniquely represent the various Bitcoin networks as a 32 byte hash value. Chain hash is now being used by the DLC folks, as such it is useful to have it implemented in rust-bitcoin.

  One method of calculating a chain hash is by hashing the genesis block for the respective network.

  Add a `ChainHash` type that can be used to get the unique identifier of each of the 4 Bitcoin networks we support. Add a method that calculates the chain hash for a network using the double sha256 of the genesis block. Do so using hard coded consts and add unit tests (regression/sanity) that show these hard coded byte arrays match the hash of the data we return for the genesis block for the respective network.

  The chain hash for the main Bitcoin network can be verified from LN docs (BOLT 0), add a link to this document.

  Closes: #481

ACKs for top commit:
  Kixunil:
    ACK 8e29f2b493
  sanket1729:
    ACK 8e29f2b493.

Tree-SHA512: 8156bb55838b73694ddf77a606cbe403f53a31d363aa0dee11b97dc31aa9b62609d7d84b8f0f92c08e90372a3e8c7b416fb07989d6da9633763373b41339b1f5
2022-06-01 12:34:07 -07:00
Andrew Poelstra 57eaf13c86
Merge rust-bitcoin/rust-bitcoin#1021: Enforce segwit v0 script validity when creating address.
6c10d77ecb Address::from_script() - Check witness v0 program lengths. (Noah)

Pull request description:

  Adds a check in `Address::from_script()` that checks if segwit v0 scripts have a valid length.

  Fix: #995

ACKs for top commit:
  tcharding:
    ACK 6c10d77ecb
  sanket1729:
    ACK 6c10d77ecb. Left a comment can be addressed in separate PR.
  apoelstra:
    ACK 6c10d77ecb

Tree-SHA512: 32aebb13477958b1455c688f668aaa3d3af4db0a7936b9549bcd1d03bd0e16635b8471549d96f1e8d408d6501e8fb515df2eb86b17a08c3152774a5be78ae8b1
2022-06-01 16:24:18 +00:00
Andrew Poelstra 50489c8d5e
Merge rust-bitcoin/rust-bitcoin#1026: Add non_exhaustive to all error enums
99f565f932 Add non_exhaustive to all error enums (Tobin C. Harding)

Pull request description:

  Adding an error variant to a public enum is an API breaking change, this means making, what could be, small refactorings or improvements harder. If we use `non_exhaustive` for error types then we mitigate this cost.

  There is a tradeoff however, downstream users who explicitly match on our public error types must include a wildcard pattern.

ACKs for top commit:
  apoelstra:
    ACK 99f565f932
  Kixunil:
    ACK 99f565f932

Tree-SHA512: ff329f87d52b3fbe24654f32e4062ddae73173cba5a13d511591158e68ee278e9bdc0a70a3e0b42d6606b369255923f9c46d8b3d1b2ff75f8461a82567df80cd
2022-06-01 16:22:44 +00:00
Andrew Poelstra 95548afccf
Merge rust-bitcoin/rust-bitcoin#798: Audit conversion methods
5fbb211085 Use fn name to_ instead of as_ (Tobin Harding)
8ffa32315d Use fn name to_ instead of into_ (Tobin Harding)
6874ce91e2 Remove as_inner (Tobin C. Harding)

Pull request description:

  Rust has naming conventions surrounding conversion functions

  We have a handful of methods that are not following convention. This PR is done as three patches, separated by incorrect function name (`into_` or `as_`) and by whether or not the original method needs deprecating. Can be squashed if folks prefer.

  From the docs: https://rust-lang.github.io/api-guidelines/naming.html

  <h2><a class="header" href="https://rust-lang.github.io/api-guidelines/naming.html#ad-hoc-conversions-follow-as_-to_-into_-conventions-c-conv" id="ad-hoc-conversions-follow-as_-to_-into_-conventions-c-conv">Ad-hoc conversions follow <code>as_</code>, <code>to_</code>, <code>into_</code> conventions (C-CONV)</a></h2>
  <p>Conversions should be provided as methods, with names prefixed as follows:</p>

  Prefix | Cost | Ownership
  -- | -- | --
  as_ | Free | borrowed -> borrowed
  to_ | Expensive | borrowed -> borrowed
  | | | borrowed -> owned (non-Copy types)
  | | | owned -> owned (Copy types)
  into_ | Variable | owned -> owned (non-Copy types)

  EDIT: I did actually audit all uses of `to_` when I first did this, I did this by grepping for `fn to_` and checking the output against the table.

ACKs for top commit:
  apoelstra:
    ACK 5fbb211085
  Kixunil:
    ACK 5fbb211085

Tree-SHA512: f750b2d1a10bc1d4bb030d8528a582701cc3d615aa8a8ab391324dae639544bb3629a19b372784e1e274a8ddcc613c621c7aae21a3ea54fde356a6aa5e611ac0
2022-06-01 16:19:36 +00:00
Andrew Poelstra 8f81fc5aa7
Merge rust-bitcoin/rust-bitcoin#1004: Clear Clippy warnings
a6efe982bd Use write_all to write whole buffer (Tobin C. Harding)
51c60b8507 Allow no is_empty method for VarInt (Tobin C. Harding)
841f1f5832 Implement Default for TaprootBuilder (Tobin C. Harding)
f81d4aa9bd Remove unnecessary call to clone (Tobin C. Harding)
27649ba182 Use copied instead of map to copy (Tobin C. Harding)
62ccc9102c Use iter().flatten().any() instead of if let Some (Tobin C. Harding)
4b28a1bb97 Remove unneeded return statement (Tobin C. Harding)
16cac3cd70 Derive Default for Witness (Tobin C. Harding)
c75189841a Remove unnecessary closure (Tobin C. Harding)
dfff85352a Ignore bytes written for sighash_single bug output (Tobin C. Harding)
14c72e755b Use contains combinator instead of manual range (Tobin C. Harding)
b7d6c3e02c Remove additional reference (Tobin C. Harding)
1940b00132 Implement From instead of Into (Tobin C. Harding)
fcd0f4deac Use struct field init shorthand (Tobin C. Harding)
641960f037 Use rustfmt::skip (Tobin C. Harding)
3cd00e5d47 Remove unnecessary whitespace (Tobin C. Harding)

Pull request description:

  Clear all current Clippy warnings, codebase wide. Possibly contentious patches include:

  - [commit](fcd0f4deac): `fcd0f4d Use struct field init shorthand`
  - [commit](14c72e755b): `14c72e7 Use contains combinator instead of manual range`
  - [commit](3b3c37803a): `3b3c378 Use iter().flatten() instead of if let Some`

  ## Notes

  Please note commit `dfff8535 Ignore bytes written for sighash_single bug output` touches the same lines of code as commit `a6efe982 Use write_all to write whole buffer`.

ACKs for top commit:
  apoelstra:
    ACK a6efe982bd
  Kixunil:
    ACK a6efe982bd

Tree-SHA512: 5351a82fd3deadb8e53911c43b5a60a9517d5c57014f5fa833b79b32c0a4606ada0bcd28e06ce35d47aa74115c7cf70c27a1ba9c561a3424ac85a4f69774014d
2022-06-01 16:18:46 +00:00
Noah 6c10d77ecb Address::from_script() - Check witness v0 program lengths. 2022-05-31 18:13:52 +10:00
Tobin C. Harding 99f565f932 Add non_exhaustive to all error enums
Adding an error variant to a public enum is an API breaking change, this
means making what could be small refactorings or improvements harder. If
we use `non_exhaustive` for error types then we mitigate this cost.
There is a tradeoff however, downstream users who explicitly match on
our public error types must include a wildcard pattern.
2022-05-31 14:29:50 +10:00
Dawid Ciężarkiewicz 082e185711 Add `consensus_decode_from_finite_reader` optimization
As things are right now, memory exhaustion protection in `Decodable`
is based on checking input-decoded lengths against arbitrary limits,
and ad-hoc wrapping collection deserialization in `Take`.

The problem with that are two-fold:

* Potential consensus bugs due to incorrect limits.
* Performance degradation when decoding nested structured,
  due to recursive `Take<Take<..>>` readers.

This change introduces a systematic approach to the problem.

A concept of a "size-limited-reader" is introduced to rely on
the input data to finish at enforced limit and fail deserialization.

Memory exhaustion protection is now achived by capping allocations
to reasonable values, yet allowing the underlying collections
to grow to accomodate rare yet legitmately oversized data (with tiny
performance cost), and reliance on input data size limit.

A set of simple rules allow avoiding recursive `Take` wrappers.

Fix #997
2022-05-30 21:15:34 -07:00
Tobin C. Harding a6efe982bd Use write_all to write whole buffer
A better way to write a byte string is to use write all so that
`ErrorKind::Interupted` is not returned.

Use `write_all` to write the non-sense (error indication) string to the
writer when we hit the SIGHASH_SINGLE bug.
2022-05-31 12:15:16 +10:00
Tobin Harding 5fbb211085 Use fn name to_ instead of as_
Rust convention is to use `to_` for conversion methods that convert from
an owned type to an owned `Copy` type. `as_` is for borrowed to borrowed
types.

Re-name and deprecate conversion methods that use `as_` for owned to
owned `Copy` types to use `to_`.
2022-05-31 10:07:24 +10:00
Tobin Harding 8ffa32315d Use fn name to_ instead of into_
Rust convention is to use `to_` for conversion methods that convert from
an owned type to an owned `Copy` type. `into_` is for owned to owned
non-`Copy` types.

Re-name and deprecate conversion methods that use `into_` for `Copy`
types to use `to_`.
2022-05-31 10:07:24 +10:00
Tobin C. Harding 6874ce91e2 Remove as_inner
`self` and the referenced type returned by `as_inner` are both `Copy`
types. There is no need to provide an reference getter method to a
`Copy` type since implementing `Copy` implies that copying is cheap.
2022-05-31 10:07:24 +10:00
Dawid Ciężarkiewicz 1875c912c3 Extend docstring for more types 2022-05-27 20:34:36 -07:00
Dawid Ciężarkiewicz 325ea8fb7d Add "Relevant BIPs` to `Address` 2022-05-27 20:34:36 -07:00
Dawid Ciężarkiewicz 7c2ca3d20b Add `BlockHeader` Bitcoin Core reference link 2022-05-27 20:34:36 -07:00
Dawid Ciężarkiewicz f4922f6fe7 Update `BlockHeader::version` documentation 2022-05-27 20:34:36 -07:00
Tobin C. Harding 57dd6739c3 Do not print error when displaying for std builds
We implement `source` for all our error types. This means that we should
not display the source error explicitly because users can call `source`
to get the source error.

However, `std::Error::source()` is only available for "std" builds, so
that we do not loose the error source information in "no-std" builds add
a macro that conditionally adds the source onto the error message.
2022-05-27 08:38:52 +10:00
Martin Habovstiak 2e7effc604 Feature `use-serde` renamed to `serde`
Features activating external crates are supposed to have same name as
those crates. However we depend on same feature in other crates so we
need a separate feature. After MSRV bump it is possible to rename the
crates and features so we can now fix this inconsistency.

Sadly, derive can't see that the crate was renamed so all derives must
be told to use the other one.
2022-05-26 10:10:47 +02:00
Tobin C. Harding 88ce8fe923 Match against an optional single trailing colon
Currently we allow multiple trailing colons when matching within the
`check_format_non_negative` macro. We can be more restrictive with no
loss of usability.

Use `$(;)?` instead of `$(;)*` to match against 0 or 1 semi-colons
instead of 0 or more.
2022-05-26 11:26:42 +10:00
Tobin C. Harding b80cfeed85 Bind to error_kind instead of e
To make it explicit that this is not an error bind to the local variable
`error_kind` instead of `e`.
2022-05-26 10:06:18 +10:00
Tobin C. Harding 51c60b8507 Allow no is_empty method for VarInt
Clippy emits:

  warning: struct `VarInt` has a public `len` method, but no `is_empty`
  method

However, `VarInt` has no concept of 'is empty' so add a compiler
directive to allow the lint.
2022-05-26 08:50:48 +10:00
Tobin C. Harding 841f1f5832 Implement Default for TaprootBuilder
Clippy emits:

  warning: you should consider adding a `Default` implementation for
  `TaprootBuilder`

As suggested, implement `Default` or `TaprootBuilder`.
2022-05-26 08:50:48 +10:00
Tobin C. Harding f81d4aa9bd Remove unnecessary call to clone
Clippy emits:

warning: using `clone` on type `secp256k1::XOnlyPublicKey` which
implements the `Copy` trait

As suggested, remove call to `clone`.
2022-05-26 08:50:48 +10:00
Tobin C. Harding 27649ba182 Use copied instead of map to copy
Clippy emits:

  warning: you are using an explicit closure for copying elements

In one instance we have `map` followed by `flatten`, this can be
replaced by the `flat_map` combinator.

As suggested use `copied` combinator.
2022-05-26 08:50:48 +10:00
Tobin C. Harding 62ccc9102c Use iter().flatten().any() instead of if let Some
Clippy emits:

  warning: unnecessary `if let` since only the `Some` variant of the
  iterator element is used

Use combinator chain `iter().flatten().any()` to check for an node with
hidden nodes.
2022-05-26 08:50:43 +10:00
Tobin C. Harding 4b28a1bb97 Remove unneeded return statement
Clippy emits:

  warning: unneeded `return` statement

As suggested, remove the unneeded return statement.
2022-05-25 13:32:42 +10:00
Tobin C. Harding 16cac3cd70 Derive Default for Witness
No need for an explicit `Default` implementation for `Witness`, it can
be derived. Found by Clippy.
2022-05-25 13:31:15 +10:00
Tobin C. Harding c75189841a Remove unnecessary closure
Clippy emits:

  warning: unnecessary closure used to substitute value for
  `Option::None`

As suggested, use `ok_or` removing the unnecessary closure.
2022-05-25 13:30:07 +10:00
Tobin C. Harding dfff85352a Ignore bytes written for sighash_single bug output
Clippy emits:

  error: written amount is not handled

This code is explicitly writing garbage to the writer, no need to handle
the number of bytes written.
2022-05-25 13:25:23 +10:00
Tobin C. Harding 14c72e755b Use contains combinator instead of manual range
Clippy emits:

  warning: manual `RangeInclusive::contains` implementation

As suggested, use `contains` combinator instead of manual range check.
2022-05-25 13:24:15 +10:00
Tobin C. Harding b7d6c3e02c Remove additional reference
Clippy emits:

  warning: this expression creates a reference which is immediately
  dereferenced by the compiler

As suggested, remove the additional reference.
2022-05-25 13:21:25 +10:00
Tobin C. Harding 1940b00132 Implement From instead of Into
Implementing `From` gives us an implementation of `Into` for free so is
therefore superior.

Found by Clippy.
2022-05-25 13:19:17 +10:00
Tobin C. Harding fcd0f4deac Use struct field init shorthand
Clippy emits:

  warning: redundant field names in struct initialization

As suggested use struct field init shorthand.
2022-05-25 13:15:20 +10:00
Tobin C. Harding 641960f037 Use rustfmt::skip
Clippy emits:

  warning: `cfg_attr` is deprecated for rustfmt and got replaced by tool
  attributes

As suggested use `rustfmt::skip`.
2022-05-25 13:13:13 +10:00
Tobin C. Harding 3cd00e5d47 Remove unnecessary whitespace 2022-05-25 13:12:31 +10:00
Tobin C. Harding 241ec72497 Bind to b instead of e
This error variant contains a byte value not an error type, bind to
local variable `b` instead of `e` to make this explicit.
2022-05-25 12:53:33 +10:00
Tobin C. Harding 01f481bf5c Bind to s instead of e
This error variant contains a string not an error type, bind to local
variable `s` instead of `e` to make this explicit.
2022-05-25 12:33:56 +10:00
Tobin C. Harding 5c6d369289 network: Remove unused error variants
Remove unused error variants from `network::Error`.
2022-05-25 12:32:35 +10:00
Tobin C. Harding e67e97bb37 Put From impl below std::error::Error impl
As we do for all the other error types put the `From` impl blocks below
the `std::error::Erro` impl block.

Refactor only, no logic changes.
2022-05-25 12:31:32 +10:00
Tobin C. Harding 6ca98e5275 Remove error TODO
Remove the TODO from comments and raise a GitHub issue to track it.

  https://github.com/rust-bitcoin/rust-bitcoin/issues/1002
2022-05-25 11:59:58 +10:00
Andrew Poelstra 324fa0f7be
Merge rust-bitcoin/rust-bitcoin#968: Refactor address byte swapping
07c75304d2 Refactor address byte swapping (Tobin C. Harding)

Pull request description:

  Refactor address byte swapping

  When encoding a `network::Address` two of the fields are encoded
  big-endian instead of little-endian as is done by `consensus_encode`. In
  order to achieve this we have a helper function `addr_to_be` that swaps
  the bytes. This function is miss-named because it is not converting to a
  specific endian-ness (which implies different behaviour on machines with
  different endian-ness) but is reversing the byte order irrespective of
  the underlying architecture.

  - Remove function `addr_to_be`
  - Inline the endian-ness code when encoding an address
  - Remove TODO and use `to_be_bytes` when encoding port
  - Add a function for reading big-endian bytes `read_be_address`
  - Use `read_be_address` when decoding `Address` and `Addrv2`

  Refactor only, no logic changes. Code path is already covered by
  unit tests.

ACKs for top commit:
  apoelstra:
    ACK 07c75304d2
  Kixunil:
    ACK 07c75304d2

Tree-SHA512: 186bc86512e264a7b306f3bc2e18d1619f3cd84fc54412148cfc2663e8d6e9616ea9e2fe19eafec72d76cc11367a9b39cac2b73210d9e43eb8f453bd253b33de
2022-05-24 17:41:12 +00:00
Andrew Poelstra 0e82376bf8
Merge rust-bitcoin/rust-bitcoin#987: Implement `std::error::Error` for the new MSRV
97a5bb1439 Implement std::error::source codebase wide (Tobin C. Harding)
0a9191b429 Add parenthesis around left hand side of companion (Tobin C. Harding)
7cf8af2f86 Put Error impl block below Display (Tobin C. Harding)
2384712364 Re-order Display match arms (Tobin C. Harding)

Pull request description:

  Now that we have MSRV of 1.41.1 we should use `source` instead of `cause`. Audit the whole codebase and implement `source` for _every_ error type we have.

  The first three patches are preparatory cleanup, patch 3 is particularly shameful (adds parenthesis to make my editor work).

  CC @Kixunil because he is championing the error stuff.

ACKs for top commit:
  apoelstra:
    ACK 97a5bb1439

Tree-SHA512: 46313a28929445f32e01e30ca3b0246b30bc9d5e43db5754d4b441e9c30d3e427efaf247100eb6b452f98beec5a4fcde1daba7943a772114aa34f78ab52cbc60
2022-05-21 14:08:52 +00:00
sanket1729 2b1154cefe
Merge rust-bitcoin/rust-bitcoin#996: Box value encoded in a variant to reduce enum stack space
9906cea14c Box value encoded in a variant to reduce enum stack space (Riccardo Casatta)

Pull request description:

  before

  ```
  print-type-size type: `util::psbt::error::Error`: 120 bytes, alignment: 8 bytes
  print-type-size     discriminant: 1 bytes
  print-type-size     variant `CombineInconsistentKeySources`: 115 bytes
  print-type-size         padding: 3 bytes
  print-type-size         field `.0`: 112 bytes, alignment: 4 bytes
  print-type-size     variant `InvalidKey`: 39 bytes
  print-type-size         padding: 7 bytes
  print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
  ```

  after
  ```
  print-type-size type: `util::psbt::error::Error`: 40 bytes, alignment: 8 bytes
  print-type-size     discriminant: 1 bytes
  print-type-size     variant `InvalidKey`: 39 bytes
  print-type-size         padding: 7 bytes
  print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
  print-type-size     variant `DuplicateKey`: 39 bytes
  print-type-size         padding: 7 bytes
  print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
  ```

  `util::psbt::error::Error` is wrapped also in `consensus::encode::Error` and stack savings are gained there also

ACKs for top commit:
  apoelstra:
    ACK 9906cea14c
  tcharding:
    ACK 9906cea14c
  sanket1729:
    utACK 9906cea14c

Tree-SHA512: e03988fcbc3dd87f83d00dd84ec1c538bc5c63bea97ff4a69a715621f498f57d7fe2a623e351942d9532af40c723e42a9eb6ef48ebf4c62ddf5c0f44e9ea0a07
2022-05-19 19:04:58 -07:00
sanket1729 fcb035fb4f
Merge rust-bitcoin/rust-bitcoin#956: Improve docs in `sighash` and `psbt/mod.rs`
9896f27eae psbt: Improve documentation (Tobin C. Harding)
33a50831ce sighash: Improve documentation (Tobin Harding)

Pull request description:

  Done while working on sighash and PSBT signing. Just the usual docs fixes. Note, does not do the whole `psbt` module just the file mentioned.

ACKs for top commit:
  apoelstra:
    ACK 9896f27eae

Tree-SHA512: 5fbfa258cdb216189922a49a42b7ab9fb78faeee72d82f8cb99a1b3d930d170074013e317b0e7af259a404ac4db93841b4d2b525e933c5e145da71e7522800fd
2022-05-19 18:59:37 -07:00
sanket1729 fa8091866d
Merge rust-bitcoin/rust-bitcoin#980: Remove sha256t_hash_newtype macro
58f94bee9b Remove sha256t_hash_newtype macro (Tobin C. Harding)

Pull request description:

  Since commit `commit 275adc6c335a4326699cfbd444949e1725864ea1` on `bitcoin_hashes` we have the identical implementation of the macro `sha256t1_hash_newtype` in this crate and in `bitcoin_hashes`.

  Remove the `sha256t_hash_newtype` macro from this crate in favour of the one in `bitcoin_hashes`.

ACKs for top commit:
  apoelstra:
    ACK 58f94bee9b
  sanket1729:
    ACK 58f94bee9b

Tree-SHA512: ec08fd25c1cca71a07ea61cb5838ce8962daae7cbb84d8beccc3d0d285439909721edd643292a8f3f6989e1c2c41fda9addfd5cdb063ef53ebc6ef646da79cf3
2022-05-19 18:53:32 -07:00
sanket1729 d73a94a5d9
Merge rust-bitcoin/rust-bitcoin#960: Trival docs fixes
90b4f1cde8 Clear TapTreeIter clippy warning (Tobin C. Harding)
e6084a1af8 Improve documentation around EcdsaSig (Tobin Harding)

Pull request description:

  Do a couple of trivial docs fixes, done during other work.

  - Patch 1 improves docs on the `EcdsaSig` struct
  - Patch 2 clears a clippy warning during docs build - no sure if the solution is the best available though

ACKs for top commit:
  apoelstra:
    re-ACK 90b4f1cde8
  sanket1729:
    ACK 90b4f1cde8

Tree-SHA512: 0647dc2e6550938ccca658a9dddffba7175d5c4eb8cec0e165d3a7fa8f2b1dfb902e795aca77d96a6c31092baf64244fa1d7151a304134d3b1895619a2823338
2022-05-19 18:50:48 -07:00
sanket1729 48466bdf93
Merge rust-bitcoin/rust-bitcoin#978: Make Address::get_payload_bytes public
7ca30b6aa8 Move Address::payload_as_bytes to Payload::as_bytes (Fredrik Meringdal)
525ea00e0f Make Address::get_payload_bytes public (Fredrik Meringdal)

Pull request description:

  Hi, thanks for the amazing work on this crate.

  I am trying to upgrade from v0.27 to v0.28, but unable to do so because the `Address::get_payload_bytes` was made private. My use-case is that I have a script hash address and an `Address` and need to compare the two, and in order to do so I need access to the payload bytes of `Address`.
  I hope you will consider making this function public again 🙏

ACKs for top commit:
  apoelstra:
    ACK 7ca30b6
  tcharding:
    ACK 7ca30b6aa8
  sanket1729:
    ACK 7ca30b6aa8. Sorry for the delay and congratz on your first time contribution

Tree-SHA512: 02af4565853d93506751ed7cb004f52cb5d8c7936067e06b3e237b448ccdf5716470448eeccbe211958e095b66bb37c7027800c0470c6988dc18d8bd5b48f459
2022-05-19 18:39:14 -07:00
Riccardo Casatta 9906cea14c
Box value encoded in a variant to reduce enum stack space
before

```
print-type-size type: `util::psbt::error::Error`: 120 bytes, alignment: 8 bytes
print-type-size     discriminant: 1 bytes
print-type-size     variant `CombineInconsistentKeySources`: 115 bytes
print-type-size         padding: 3 bytes
print-type-size         field `.0`: 112 bytes, alignment: 4 bytes
print-type-size     variant `InvalidKey`: 39 bytes
print-type-size         padding: 7 bytes
print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
```

after
```
print-type-size type: `util::psbt::error::Error`: 40 bytes, alignment: 8 bytes
print-type-size     discriminant: 1 bytes
print-type-size     variant `InvalidKey`: 39 bytes
print-type-size         padding: 7 bytes
print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
print-type-size     variant `DuplicateKey`: 39 bytes
print-type-size         padding: 7 bytes
print-type-size         field `.0`: 32 bytes, alignment: 8 bytes
```
2022-05-19 17:05:42 +02:00
Tobin C. Harding 97a5bb1439 Implement std::error::source codebase wide
Audit ever error type we have and implement `source` for each.
2022-05-19 16:35:11 +10:00
Tobin C. Harding 0a9191b429 Add parenthesis around left hand side of companion
Parenthesis are not needed around this expression but my editor is going
mad and cannot format the code without them. Since it does not hurt
readability add parenthesis around the expression.
2022-05-19 16:33:49 +10:00
Tobin C. Harding 7cf8af2f86 Put Error impl block below Display
In an effort to be uniform throughout the codebase; put the
`std::error::Error` impl block below the `Display` impl block.
2022-05-19 16:33:49 +10:00
Tobin C. Harding 2384712364 Re-order Display match arms
Put the match arms in the same order as the enum that defines them.
2022-05-19 16:33:49 +10:00
Tobin C. Harding 07c75304d2 Refactor address byte swapping
When encoding a `network::Address` two of the fields are encoded
big-endian instead of little-endian as is done by `consensus_encode`. In
order to achieve this we have a helper function `addr_to_be` that swaps
the bytes. This function is miss-named because it is not converting to a
specific endian-ness (which implies different behaviour on machines with
different endian-ness) but is reversing the byte order irrespective of
the underlying architecture.

- Remove function `addr_to_be`
- Inline the endian-ness code when encoding an address
- Remove TODO and use `to_be_bytes` when encoding port
- Add a function for reading big-endian bytes `read_be_address`
- Use `read_be_address` when decoding `Address` and `Addrv2`

Refactor only, no logic changes. Code path is already covered by
unit tests.
2022-05-19 16:03:03 +10:00
Tobin Harding 8e29f2b493 Add ChainHash type
The Lightning network defines a type called 'chain hash' that is used to
uniquely represent the various Bitcoin networks as a 32 byte hash value.
Chain hash is now being used by the DLC folks, as such it is useful to
have it implemented in rust-bitcoin.

One method of calculating a chain hash is by hashing the genesis block
for the respective network.

Add a `ChainHash` type that can be used to get the unique identifier of
each of the 4 Bitcoin networks we support. Add a method that returns
the chain hash for a network using the double sha256 of the genesis
block. Do so using hard coded consts and add unit
tests (regression/sanity) that show these hard code byte arrays match
the hash of the data we return for the genesis block for the respective
network.

The chain hash for the main Bitcoin network can be verified from LN
docs (BOLT 0), add a link to this document.
2022-05-19 15:07:39 +10:00
Tobin Harding cd8f511fcb blockdata: constants: Use wildcard import in unit tests
Import with wildcard is applicable in unit tests, use it.
2022-05-19 14:20:06 +10:00
Tobin Harding 71bf19621a Use fully qualified path in macro
As we do for the rest of the macros use the fully qualified path to
`fmt` so users of the macro do not have to import it.
2022-05-19 14:14:32 +10:00
Tobin C. Harding 58f94bee9b Remove sha256t_hash_newtype macro
Since commit `commit 275adc6c335a4326699cfbd444949e1725864ea1` on
`bitcoin_hashes` we have the identical implementation of the macro
`sha256t1_hash_newtype` in this crate and in `bitcoin_hashes`.

Remove the `sha256t_hash_newtype` macro from this crate in favour of the
one in `bitcoin_hashes`.
2022-05-19 14:10:57 +10:00
Tobin C. Harding 90b4f1cde8 Clear TapTreeIter clippy warning
Clippy emits warning:

 public documentation for `script_leaves` links to private item `TapTreeIter`

I'm not exactly sure why this is but adding the generic type place
holder clears the warning.
2022-05-19 14:06:08 +10:00
Tobin Harding e6084a1af8 Improve documentation around EcdsaSig
Improve the rustdocs for serialization methods of the `EcdsaSig` type.
2022-05-19 14:05:34 +10:00
Tobin C. Harding 9896f27eae psbt: Improve documentation
Improve documentation in `psbt/mod.rs` by doing:

- Use full sentences (full stops and capitalisation)
- Use 100 line column width
- Use back ticks and links as appropriate
- Use `Errors` section
- Use third person tense to describe functions
2022-05-19 12:47:33 +10:00
Tobin Harding 33a50831ce sighash: Improve documentation
Improve the rustdoc documentation in the `sighash` module by doing:

- Improve grammar
- Use full sentences (full stops and capitalisation)
- Use 100 line column width
- Use back ticks and links as appropriate
- Improve correctness of `SigHashCache::new` function
2022-05-19 12:29:27 +10:00
Tobin C. Harding 9f0c687d89 Enable edition 2018
Add 'edition = "2018"' to the manifest and do a bunch of manual path
fixups (use statements and fully qualified paths).
2022-05-11 10:16:48 +10:00
Tobin C. Harding dca0d67771 Fix in preparation for next edition
Use cargo to upgrade from edition 2015 to edition 2018.

 cargo fix --edition

No manual changes made. The result of the command above is just to fix
all the use statements (add `crate::`) and fix the fully qualified path
formats i.e., `::Foo` -> `crate::Foo`.
2022-05-11 10:16:17 +10:00
Matt Corallo 0ab5eeac81 Add method to push an ECDSA sig + sighash type byte on a witness
We do this all over the place in rust-lightning, and its probably
the most common thing to do with a `Witness` so I figured I'd
upstream the util method to do this. It also avoids an allocation
compared to the naive approach of `SerializedSignature.to_vec()`
with two pushes, which is nice.
2022-05-05 03:27:28 +00:00
Fredrik Meringdal 7ca30b6aa8 Move Address::payload_as_bytes to Payload::as_bytes 2022-05-02 12:32:08 +02:00
sanket1729 bcc923c03a
Merge rust-bitcoin/rust-bitcoin#716: Add `amount::Display` - make formatting configurable
4f1200d629 Added `amount::Display` - configurable formatting (Martin Habovstiak)

Pull request description:

  This significatnly refactors the formatting code to make formatting more
  configurable. The main addition is the `Display` type which is a
  builder that can configure denomination or other things (possibly more
  in the future).

  Further, this makes all representations of numbers minimal by default,
  so should be documented as a possibly-breaking change.

  Because of the effort to support all other `fmt::Formatter` options this
  required practically complete rewrite of `fmt_satoshi_in`. As a
  byproduct I took the opportunity of removing one allocation from there.

  Closes #709

ACKs for top commit:
  tcharding:
    ACK 4f1200d629
  dr-orlovsky:
    ACK 4f1200d629
  sanket1729:
    ACK 4f1200d629

Tree-SHA512: 3fafdf63fd720fd4514e026e9d323ac45dfcd3d3a53a4943178b1e84e4cf7603cb6235ecd3989d46c4ae29453c4b0bb2f2a5996fbddf341cd3f68dc286062144
2022-04-30 15:27:19 -07:00
sanket1729 d5a28fc48f
Merge rust-bitcoin/rust-bitcoin#673: Use iterator in `blockdata::script::Instructions`
2c28d3b448 Fix handling of empty slice in Instructions (Martin Habovštiak)
e6ff754b73 Fix doc of take_slice_or_kill (Martin Habovštiak)
0ec6d96a7b Cleanup after `Instructions` refactoring (Martin Habovstiak)
bc763259fe Move repeated code to functions in script (Martin Habovstiak)
1f55edf718 Use iterator in `blockdata::script::Instructions` (Martin Habovstiak)

Pull request description:

  This refactors `blockdata::script::Instructions` to use
  `::core::slice::Iter<'a, u8>` instead of `&'a [u8]` to better express
  the intention and to avoid some slicing mistakes. Similarly to a
  previous change this uses a macro to deduplicate the common logic and
  the new `read_uint_iter` internal function to automatically advance the
  iterator.

  Addresses:
  https://github.com/rust-bitcoin/rust-bitcoin/pull/662#pullrequestreview-768320603

ACKs for top commit:
  tcharding:
    ACK 2c28d3b448
  sanket1729:
    ACK 2c28d3b448. I don't want to hold ACKs on minor things as they can be in a fixup later.

Tree-SHA512: 9dc770b9f7958efbd0df2cc2d3546e23deca5df2f94ea2c42b089df628f4b99f08032ca4aa8822caf6643a8892903e1bda41228b78c8519b90bcaa1255d9acc6
2022-04-30 15:25:41 -07:00
Andrew Poelstra 9f817982a3
Merge rust-bitcoin/rust-bitcoin#905: Disable Serde's default-features
76fcf81474 Override default visit_byte_buf on Script (ass3rt)
add100c20d Removed reimplementations of default methods (ass3rt)
7db03f27e4 Disable Serde's default-features (ass3rt)

Pull request description:

  With this patch, existing users of the `use-serde` feature will no longer be
  compiling with `serde/std` enabled, but this allows dependent projects
  to import serde and enable `serde/alloc` as required by some no-std targets.

ACKs for top commit:
  Kixunil:
    ACK 76fcf81474
  tcharding:
    ACK 76fcf81474
  apoelstra:
    ACK 76fcf81474

Tree-SHA512: 5748e64e1f91f19dbfbf32bead6e6d759e448e92ed0dab731b3059f6b37bd811fad6654edc8fbd113e3be17fefaf9fc4912145d6b61484ced0517712361ecfdc
2022-04-30 15:52:03 +00:00
Andrew Poelstra ff6dc61967
Merge rust-bitcoin/rust-bitcoin#690: BUG: Does not work with `no_std` under 1.29 (MSRV)
7854bd7918 Fix `no_std` MSRV Fixes #690, #947 (mcroad)

Pull request description:

  `rust-bitcoin` does not work with rust 1.29 under a `no_std` environment. This could be considered a bug. However, `no_std` support is a recent addition and this is likely not breaking anyone's builds.

  A decision needs to be made, either `no_std` MSRV is the current stable version while keeping the `std` MSRV as 1.29, or it needs to be fixed.

  This pr adds `no_std` to the 1.29 test suite.

  This came as I try to get rust-bitcoin/rust-miniscript#277 working and got stuck on the issue of testing `no_std` under 1.29.

ACKs for top commit:
  Kixunil:
    ACK 7854bd7918
  tcharding:
    ACK 7854bd7918
  sanket1729:
    ACK 7854bd7918
  apoelstra:
    ACK 7854bd7918

Tree-SHA512: 1614fb2193f760ed340592bdb94d076066f6f783bc1dc2b145d97f7151a28316e56b1975f1ad948460eb26db04e7e9382e60076686a681e46dcf33521fda5fca
2022-04-30 15:50:54 +00:00
Fredrik Meringdal 525ea00e0f Make Address::get_payload_bytes public 2022-04-29 11:54:53 +02:00
sanket1729 e47d89c537
Merge rust-bitcoin/rust-bitcoin#952: Remove MSRV todo comments
831b0267de Use contains() instead of manual range (Tobin C. Harding)
6410095687 Use chunks_exact (Tobin C. Harding)
3a0097ba49 Use trim_start_matches (Tobin C. Harding)
0a19710906 Use vec! macro instead of new followed by push (Tobin C. Harding)

Pull request description:

  Now that 0.28 is out we do not need to support Rust 1.29 on `master`.

  Remove trivial MSRV `TODO`s from the code. (All these changes only rely on MSRV bumping to 1.31 so are easily within bounds.)

ACKs for top commit:
  Kixunil:
    ACK 831b0267de
  sanket1729:
    ACK 831b0267de

Tree-SHA512: f1ea594216ba7dfa24696b964ce296a8aea72dd2e16e11d3a43fe8b90c851abf59b1612b2b1311146e8070112f3834762584e4f0515b8f546f72af169eb4bda9
2022-04-27 15:52:16 -07:00
sanket1729 ee411a4cc2
Merge rust-bitcoin/rust-bitcoin#853: API to find funding utxos in psbt
5afb0eaf40 API to get an iterator for funding utxos in psbt (violet360)

Pull request description:

  ### Current status
  The API returns a vector of UTXOs and has return type `Result<Vec<&TxOut>, Error>`

  ### Expected
  The return statement should be of type `sighash::Prevouts` as pointed in #849

ACKs for top commit:
  Kixunil:
    ACK 5afb0eaf40
  tcharding:
    ACK 5afb0eaf40
  sanket1729:
    ACK 5afb0eaf40. Thanks for being patient with this.

Tree-SHA512: 724fc3dffdbb1331584f89bbe84527e1af0d193a344fe43b36f2f2a628652d259001a3abf6b3909df53524cd3fbdbe3af760b7004d40d3bee1848fbb83efff5b
2022-04-27 15:40:10 -07:00