Commit Graph

962 Commits

Author SHA1 Message Date
Deirdre Connolly eda83ebe0e
Async Halo2 verifier service (#2645)
* First pass at async Halo2 verification service

Stubs out a batch verifier for the future.
The dependencies for orchard, halo2, librustzcash, zcash_primitives, have
not been resolved.

* Halo2 verifier service and test

* Remove redundant conversion

* Test async halo2 verifier service with pre-computed Orchard shielded data test vectors

* Fix typo

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>

* Assert future result is_ok() in Halo2 verifier test

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

* Shorten tower::Service trait constraints for Halo2 verifier tests

* Remove commented out trait constraints

* .expect() vs .unwrap() to parse orchard::redpallas::VerificationKey

* Use .to_vec() for some test vectors

* Fix self-referential Display impl

* Fix deps

* Distinguish orchard vs zebra_chain::orchard imports

* Add test that halo2 verifier fails with malformed proof inputs

* Use thiserror for Halo2Error

* Use ZcashFoundation/orchard instead of dconnolly/orchard

* Add a link to the issue to remove the zfnd fork of orchard crate

* Update zebra-consensus/Cargo.toml

Co-authored-by: teor <teor@riseup.net>

* Add note

* Move artificial Orchard shielded data test vectors to zebra-test

* Align brackets

* Tidy some trait constraints and debug statements

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
Co-authored-by: teor <teor@riseup.net>
2021-11-17 13:26:15 +10:00
Deirdre Connolly 90da94fff3
Upgrade crypto deps (#3059)
* Upgrade aes and fpe

* Upgrade bellman, bls12_381, jubjub to latest

* Upgrade x25519-dalek to 1.2.0 and curve25519-dalek to 3.2.0 in the Cargo.lock

* Skip outdated hdrhistogram rather than its dependencies

Co-authored-by: teor <teor@riseup.net>
2021-11-16 19:47:54 +00:00
teor 1df3bdb089
Check MAX_BLOCK_SIGOPS in the block verifier (#3049)
* Cleanup a function that calls zcash_script

* Remove zebra_test::prelude macros that conflict with the Rust prelude

* Add sigops count support to zebra-script

* Check MAX_BLOCK_SIGOPS in the block verifier

* Test MAX_BLOCK_SIGOPS on generated and historic blocks

* Add SAFETY comments for all unsafe zebra-script code

* Explain where the consensus rule comes from

* Remove unused pretty_assertions dependency

* Allow large test block generation functions with the proptest-impl feature

* Replace `as` with `try_into` for integer conversions in unsafe code

* Expand SAFETY comments
2021-11-15 20:55:32 +00:00
Dimitris Apostolou afb8b3d477
Fix typos (#3055)
Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-11-12 19:30:22 +00:00
teor d6f3b3dc9a
Parse received addrv2 messages (#3022)
* Revert "Remove commented-out code"

This reverts commit 9e69777925f103ee11e5940bba95b896c828839b.

* Implement deserialization for `addrv2` messages

* Limit addr and addrv2 messages to MAX_ADDRS_IN_MESSAGE

* Clarify address version comments

* Minor cleanups and fixes

* Add preallocation tests for AddrV2

* Add serialization tests for AddrV2

* Use prop_assert in AddrV2 proptests

* Use a generic utility method for deserializing IP addresses in `addrv2`

* Document the purpose of a conversion to MetaAddr

* Fix a comment typo, and clarify that comment

* Clarify the unsupported AddrV2 network ID error and enum variant names

```sh
fastmod AddrV2UnimplementedError UnsupportedAddrV2NetworkIdError zebra-network
fastmod Unimplemented Unsupported zebra-network
```

* Fix and clarify unsupported AddrV2 comments

* Replace `panic!` with `unreachable!`

* Clarify a comment about skipping a length check in a test

* Remove a redundant test

* Basic addr (v1) and addrv2 deserialization tests

* Test deserialized IPv4 and IPv6 values in addr messages

* Remove redundant io::Cursor

* Add comments with expected values of address test vectors
2021-11-12 00:25:23 +00:00
Conrado Gouvea 6570ebeeb8
ZIP 212: validate Sapling and Orchard output of coinbase transactions (#3029)
* Part of ZIP 212: validate Sapling and Orchard output of coinbase transactions

* Add Orchard test vector

* Revert accidentally deleted link

* Apply suggestions from code review

Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>

* Use height from loop

* Apply suggestions from code review

Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>

* Fix formatting

Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
2021-11-11 22:18:37 +00:00
Janito Vaqueiro Ferreira Filho 11b5a33651
Security: Avoid reconnecting to peers that are likely unreachable (#3030)
* Add a `Duration32::from_days` constructor

Make it simpler to construct a `Duration32` representing a certain
number of days.

* Add `MetaAddr::was_not_recently_seen` method

A helper method to check if a peer was never seen before or if it was
last seen a long time ago. This will be one of the conditions to
consider a peer as unreachable.

* Add `MetaAddr::is_probably_unreachable` method

A helper method to check if a peer should be considered unreachable. It
is considered unreachable if recent connection attempts have failed and
it was not recently seen.

If a peer is considered unreachable, Zebra shouldn't attempt to connect
to it again.

* Do not keep trying to connect to unreachable peer

A peer is probably unreachable if it was last seen a long time ago and
if it's last connection attempt failed.

* Test `was_not_recently_seen`

Redo the calculation on arbitrary `MetaAddr`s.

* Test `is_probably_unreachable`

Redo the calculation on arbitrary `MetaAddr`s.

* Test if probably unreachable peers are ignored

Given an `AddressBook` with a list of arbitrary `MetaAddr`s, check that
none of the peers listed for a reconnection is probably unreachable.

* Rename unit test to improve clarity

Remove the double negative from the name.

Co-authored-by: teor <teor@riseup.net>

* Rename constant to `MAX_RECENT_PEER_AGE`

Make the purpose of the constant clearer.

Co-authored-by: teor <teor@riseup.net>

* Rename method to `last_seen_is_recent`

Remove the double negative from the name.

* Rename method to `is_probably_reachable`

Avoid having to negate the result of the method in security critical
filter.

* Move check into `is_ready_for_connection_attempt`

Make sure the check is used in any place that requires a peer that's
ready for a connection attempt.

* Improve test documention

Describe the goal of the test better.

Co-authored-by: teor <teor@riseup.net>

* Improve `is_probably_reachable` documentation

List the conditions as bullet points.

Co-authored-by: teor <teor@riseup.net>

* Document what happens when peers have no last seen time

Co-authored-by: teor <teor@riseup.net>
2021-11-10 23:51:22 +00:00
teor c0c00b3f0d
Simplify preallocate tests (#3032)
* Simplify preallocation tests using a test function

* Use prop_assert in proptests
2021-11-11 07:53:21 +10:00
teor 85b016756d
Refactor addr v1 serialization using a separate AddrV1 type (#3021)
* Implement addr v1 serialization using a separate AddrV1 type

* Remove commented-out code

* Split the address serialization code into modules

* Reorder v1 and in_version fields in serialization order

* Fix a missed search-and-replace

* Explain conversion to MetaAddr

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-11-10 06:47:50 +10:00
Alfredo Garcia f7c1907fb6
validate orchard flags in v5 (#3035) 2021-11-08 21:45:54 +00:00
teor b1303ab8d7
Replace read_compactsize and write_compactsize with CompactSizeMessage (#3014)
* Replace read_compactsize and write_compactsize with CompactSizeMessage

* Add tests for CompactSize64

* Add compact size range and conversion tests
2021-11-05 15:24:24 -03:00
teor 01e63da3fe
Create CompactSize64 for non-message-length fields (#3008)
* Add CompactSize64 and CompactSizeMessage types

But don't remove read_compactsize and write_compactsize yet.

* Fix CompactSize capitalisation

```sh
fastmod compactSize CompactSize zebra* book
fastmod compactsize CompactSize zebra* book
```

* Make CompactSize patterns consistent with integer lengths

* Replace unwrap_err with asserting is_err

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

* Replace a panic with an assertion

* Make generic serialization use CompactSizeMessage

* Fix type inference and borrow-checker errors

* Doctest fixes

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-11-04 15:57:30 +00:00
Conrado Gouvea e54917ae7c
V1.0.0-beta.0 (#2973)
* V1.0.0-beta.0

* Bump version in install.md
2021-10-29 20:21:26 +00:00
Deirdre Connolly 0381c2347b
ZIP-401: weighted random mempool eviction (#2889)
* ZIP-401 weighted random mempool eviction

* rename zcash.mempool.total_cost.bytes to zcash.mempool.cost.bytes

Co-authored-by: teor <teor@riseup.net>

* Remove duplicated lines

* Add cost() method to UnminedTx

Update serialization failure messages

* More docs quoting ZIP-401 rules

* Change mempool::Storage::new() to handle Copy-less HashMap, HashSet

* mempool: tidy cost types and evict_one()

* More consensus rule docs

* Refactor calculating mempool costs for Unmined transactions

* Add a note on asympotic performance of calculating weights of txs in mempool

* Bump test mempool / storage config to avoid weighted random cost limits

* Use mempool tx_cost_limit = u64::MAX for some tests

* Remove failing tests for now

* Allow(clippy::field-reassign-with-default) because of a move on a type that doesn't impl Copy

* Fix mistaken doctest formatting

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>

* Increase test timeout for Windows builds

Co-authored-by: teor <teor@riseup.net>
Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
2021-10-27 00:21:19 +00:00
Marek 2920d838ff
Limit transaction size in the mempool (#2917)
* Limit tx size

Zebra now limits the transaction size in the `zcash_deserialize()` method for
`Transaction`.

* Remove unused error variants (#2941)

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>

* Limit tx size

Zebra now limits the transaction size in the `zcash_deserialize()` method for
`Transaction`.

* Test the tx deserialization limit

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
2021-10-25 15:25:28 -03:00
Marek d2a5af0ea5
V1.0.0 alpha.19 (#2907)
* Increment the crates that have new commits since the last version

* Increment the crates that depend on crates that have changed

* Increment the version of `zebra-script`

* Use the `zebrad` version in the `zebra-network` user agent string

* Use the `v1.0.0-alpha.19` git tag in `README.md`

* Copy the draft changelog into `CHANGELOG.md`

* Delete bumps

* Update CHANGELOG.md

Co-authored-by: teor <teor@riseup.net>

* Add newly merged PRs

Co-authored-by: teor <teor@riseup.net>
2021-10-21 12:33:35 +02:00
teor 2d129414e0
Store the transaction fee in the mempool storage (#2885)
* Create a new VerifiedUnminedTx containing the miner fee

* Use VerifiedUnminedTx in mempool verification responses

And do a bunch of other cleanups.

* Use VerifiedUnminedTx in mempool download and verifier

* Use VerifiedUnminedTx in mempool storage and verified set

* Impl Display for VerifiedUnminedTx, and some convenience methods

* Use VerifiedUnminedTx in existing tests
2021-10-18 11:24:37 +10:00
Deirdre Connolly e36ec346e8
Upgrade to ed25519-zebra 3.0.0 (#2864)
* Upgrade to ed25519-zebra 3.0.0

* Revert unrelated extra space

Co-authored-by: teor <teor@riseup.net>
2021-10-12 23:42:44 +00:00
teor 2f0926a8e4
Stop ignoring the mempool conflicting transaction reject list size limit (#2855)
* Limit the size of rejection lists when there is a spend conflict

Previously, `insert` would return early with an error,
and skip limiting the rejection list sizes.

* Use prop_assert macros in proptests, rather than assert
2021-10-12 10:35:50 +10:00
Janito Vaqueiro Ferreira Filho 9e78a8af40
Refactor mempool spend conflict checks to increase performance (#2826)
* Add `HashSet`s to help spend conflict detection

Keep track of the spent transparent outpoints and the revealed
nullifiers.

Clippy complained that the `ActiveState` had variants with large size
differences, but that was expected, so I disabled that lint on that
`enum`.

* Clear the `HashSet`s when clearing the mempool

Clear them so that they remain consistent with the set of verified
transactions.

* Use `HashSet`s to check for spend conflicts

Store new outputs into its respective `HashSet`, and abort if a
duplicate output is found.

* Remove inserted outputs when aborting

Restore the `HashSet` to its previous state.

* Remove tracked outputs when removing a transaction

Keep the mempool storage in a consistent state when a transaction is
removed.

* Remove tracked outputs when evicting from mempool

Ensure eviction also keeps the tracked outputs consistent with the
verified transactions.

* Refactor to create a `VerifiedSet` helper type

Move the code to handle the output caches into the new type. Also move
the eviction code to make things a little simpler.

* Refactor to have a single `remove` method

Centralize the code that handles the removal of a transaction to avoid
mistakes.

* Move mempool size limiting back to `Storage`

Because the evicted transactions must be added to the rejected list.

* Remove leftover `dbg!` statement

Leftover from some temporary testing code.

Co-authored-by: teor <teor@riseup.net>

* Remove unnecessary `TODO`

It is more speculation than planning, so it doesn't add much value.

Co-authored-by: teor <teor@riseup.net>

* Fix typo in documentation

The verb should match the subject "transactions" which is plural.

Co-authored-by: teor <teor@riseup.net>

* Add a comment to warn about correctness

There's a subtle but important detail in the implementation that should
be made more visible to avoid mistakes in the future.

Co-authored-by: teor <teor@riseup.net>

* Remove outdated comment

Left-over from the attempt to move the eviction into the `VerifiedSet`.

* Improve comment explaining lint removal

Rewrite the comment explaining why the Clippy lint was ignored.

* Check for spend conflicts in `VerifiedSet`

Refactor to avoid API misuse.

* Test rejected transaction rollback

Using two transactions, perform the same test adding a conflict to both
of them to check if the second inserted transaction is properly
rejected. Then remove any conflicts from the second transaction and add
it again. That should work, because if it doesn't it means that when the
second transaction was rejected it left things it shouldn't in the
cache.

* Test removal of multiple transactions

When removing multiple transactions from the mempool storage, all of the
ones requested should be removed and any other transaction should be
still be there afterwards.

* Increase mempool size to 4, so that spend conflict tests work

If the mempool size is smaller than 4,
these tests don't fail on a trivial removal bug.
Because we need a minimum number of transactions in the mempool
to trigger the bug.

Also commit a proptest seed that fails on a trivial removal bug.
(This seed fails if we remove indexes in order,
because every index past the first removes the wrong transaction.)

* Summarise transaction data in proptest error output

* Summarise spend conflict field data in proptest error output

* Summarise multiple removal field data in proptest error output

And replace the very large proptest debug output with the new summary.

Co-authored-by: teor <teor@riseup.net>
2021-10-10 23:54:46 +00:00
Alfredo Garcia f1718f5c92
Add `zcash_serialized_size()` to `ZcashSerialize` trait (#2824)
* add a zcash_serialized_size()

* add a size field to `UnminedTx`

* refactor zcash_serialized_size() to don't allocate RAM

* improve performance

Co-authored-by: teor <teor@riseup.net>

* clippy

Co-authored-by: teor <teor@riseup.net>
2021-10-06 22:40:11 +00:00
dependabot[bot] c8af72cd30
Bump tracing from 0.1.28 to 0.1.29 (#2836)
Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.28 to 0.1.29.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-0.1.28...tracing-0.1.29)

---
updated-dependencies:
- dependency-name: tracing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2021-10-06 21:27:04 +00:00
Pili Guerra a85e80a0ec
Update versions for zebra v1.0.0-alpha.18 release (#2828)
* Update versions for zebra v1.0.0-alpha.18 release

* WIP: Initial PR list

* Remove uninteresting version bumps from CHANGELOG

* Categorise and group PRs in CHANGELOG, removing uninteresting PRs

* Further refine and categorise changelog entries

* Fix tag url

* Final changes to CHANGELOG

* Add a changelog description

* Spacing

* Clarify and fix changelog PR descriptions

* Add PRs that are about to be merged

* More slight clarifications

* Spacing

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

Co-authored-by: teor <teor@riseup.net>
Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-10-05 23:22:31 -03:00
Janito Vaqueiro Ferreira Filho 339fefb6e6
Update shared NU5 dependencies, set the NU5 testnet activation network upgrade parameters (#2825)
* Check return value of zcash_script_new_precomputed_tx

* Set the NU5 testnet activation height to 1_590_000

* Apply suggestions from code review

Co-authored-by: teor <teor@riseup.net>

* Update Nu5 constants to new values

* Update ZIP-244 test vectors for new branch ID

* Squashed commit of the following:

commit bdb120a249
Author: Deirdre Connolly <durumcrustulum@gmail.com>
Date:   Tue Oct 5 11:54:01 2021 -0400

    Use pallas::Base::from_str_vartime() in sinsemilla tests

commit e99fa49258
Author: Deirdre Connolly <durumcrustulum@gmail.com>
Date:   Tue Oct 5 11:45:24 2021 -0400

    Compiles

commit a520018114
Author: Deirdre Connolly <durumcrustulum@gmail.com>
Date:   Tue Oct 5 10:15:17 2021 -0400

    Incomplete upgrade of deps

* Squashed commit of the following:

commit 8d1b76ec5626517817c3a4d9f3950acc90a359df
Author: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
Date:   Tue Oct 5 04:02:26 2021 +0000

    Update `zcash_script` to support V5 transactions

    Use a newer version of `zcash_script` that has been updated to support
    V5 transactions.

commit 371233628ae61e0c25d6ba8f31d9dba42823becb
Author: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
Date:   Tue Oct 5 03:06:20 2021 +0000

    Update Zcash dependencies

    Update some Zcash crates:

    - `halo2`
    - `incrementalmerkletree' (patch version)
    - `orchard` (patch version)
    - `zcash_history` (patch version)
    - `zcash_note_encryption` (patch version)
    - `zcash_primitives` (patch version)

    And also update the `group` dependency so that the code remains
    compatible.

commit de5cf1ec40c3fc08670fc971cdf3e65e13d9f4c7
Author: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
Date:   Tue Oct 5 03:04:13 2021 +0000

    Update error message assertion

    Use the updated message for the expected error variant.

* Update `zcash_script` to support V5 transactions

Use a newer version of `zcash_script` that has been updated to support
V5 transactions.

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
Co-authored-by: teor <teor@riseup.net>
2021-10-06 11:08:41 +10:00
Janito Vaqueiro Ferreira Filho 5d9893cf31
Send crawled transaction IDs to downloader (#2801)
* Rename type parameter to be more explicit

Replace the single letter with a proper name.

* Remove imports for `Request` and `Response`

The type names will conflict with the ones for the mempool service.

* Attach `Mempool` service to the `Crawler`

Add a field to the `Crawler` type to store a way to access the `Mempool`
service.

* Forward crawled transactions to downloader

The crawled transactions are now sent to the transaction downloader and
verifier, to be included in the mempool.

* Derive `Eq` and `PartialEq` for `mempool::Request`

Make it simpler to use the `MockService::expect_request` method.

* Test if crawled transactions are downloaded

Create some dummy crawled transactions, and let the crawler discover
them. Then check if they are forwarded to the mempool to be downloaded
and verified.

* Don't send empty transaction ID list to downloader

Ignore response from peers that don't provide any crawled transactions.

* Log errors when forwarding crawled transaction IDs

Calling the Mempool service should not fail, so if an error happens it
should be visible. However, errors when downloading individual
transactions can happen from time to time, so there's no need for them
to be very visible.

* Document existing `mempool::Crawler` test

Provide some depth as to what the test expect from the crawler's
behavior.

* Refactor to create `setup_crawler` helper function

Make it easier to reuse the common test setup code.

* Simplify code to expect requests

Now that `zebra_network::Request` implement `Eq`, the call can be
simplified into `expect_request`.

* Refactor to create `respond_with_transaction_ids`

A helper function that checks for a network crawl request and responds
with the given list of crawled transaction IDs.

* Refactor to create `crawler_iterator` helper

A function to intercept and respond to the fanned-out requests sent
during a single crawl iteration.

* Refactor to create `respond_to_queue_request`

Reduce the repeated code necessary to intercept and reply to a request
for queuing transactions to be downloaded.

* Add `respond_to_queue_request_with_error` helper

Intercepts a mempool request to queue transactions to be downloaded, and
responds with an error, simulating an internal problem in the mempool
service implementation.

* Derive `Arbitrary` for `NetworkUpgrade`

This is required for deriving `Arbitrary` for some error types.

* Derive `Arbitrary` for `TransactionError`

Allow random transaction errors to be generated for property tests.

* Derive `Arbitrary` for `MempoolError`

Allow random Mempool errors to be generated for property tests.

* Test if errors don't stop the mempool crawler

The crawler should be robust enough to continue operating even if the
mempool service fails to download transactions or even fails to handle
requests to enqueue transactions.

* Reduce the log level for download errors

They should happen regularly, so there's no need to have them with a
high visibility level.

Co-authored-by: teor <teor@riseup.net>

* Stop crawler if service stops

If `Mempool::poll_ready` returns an error, it's because the mempool
service has stopped and can't handle any requests, so the crawler should
stop as well.

Co-authored-by: teor <teor@riseup.net>
Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
2021-10-05 10:55:42 +10:00
Janito Vaqueiro Ferreira Filho 800141446c
Tweak some assertions to better match their error messages (#2822)
* Change assertion condition to match message

Refactor the condition so that the expression is easier to compare to
the panic message.

* Change comparison order to match panic message

Change the order of the equality so that it matches the panic message.
2021-10-04 10:31:56 -03:00
teor e5f5ac9ce8
Fix or disable recent nightly clippy lints (#2817)
Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
2021-10-01 15:26:06 +00:00
Deirdre Connolly 679b4768df
Use complete addition instead of incomplete addition inside sinsemilla_commit (#2807) 2021-09-29 13:00:25 -04:00
Alfredo Garcia 37595c4b32
Mempool support for transaction expiration (#2774)
* mempool - support transaction expiration

* use `LatestChainTip` instead of state call

* clippy

* remove spawn task

* remove non needed async from function

* remove return value

* add a `expiry_height_mut()` method to `Transaction` for testing purposes

* fix `remove_expired_transactions()`

* add a `mempool_transaction_expiration()` test

* tidy cleanup to `expiry_height()`

* improve docs

* fix the build

* try fix macos build

* extend tests

* add doc to function

* clippy

* fix build

* start tests at block two
2021-09-29 16:52:44 +00:00
Janito Vaqueiro Ferreira Filho a0d45c38f3
Reject conflicting mempool transactions (#2765)
* Add `Transaction::spent_outpoints` getter method

Returns an iterator over the UTXO `OutPoint`s spent by the transaction.

* Add `mempool::Error::Conflict` variant

An error representing that a transaction was rejected because it
conflicts with another transaction that's already in the mempool.

* Reject conflicting mempool transactions

Reject including a transaction in the mempool if it spends outputs
already spent by, or reveals nullifiers already revealed by another
transaction in the mempool.

* Fix typo in documentation

Remove the `r` that was incorrectly added.

Co-authored-by: teor <teor@riseup.net>

* Specify that the conflict is a spend conflict

Make the situation clearer, because there are other types of conflict.

Co-authored-by: teor <teor@riseup.net>

* Clarify that the outpoints are from inputs

Because otherwise it could lead to confusion because it could also mean
the outputs of the transaction represented as `OutPoint` references.

Co-authored-by: teor <teor@riseup.net>

* Create `storage::tests::vectors` module

Refactor to follow the convention used for other tests.

* Add an `AtLeastOne::first_mut` method

A getter to allow changing the first element.

* Add an `AtLeastOne::push` method

Allow appending elements to the collection.

* Derive `Arbitrary` for `FieldNotPresent`

This is just to make the code that generates arbitrary anchors a bit
simpler.

* Test if conflicting transactions are rejected

Generate two transactions (either V4 or V5) and insert a conflicting
spend, which can be either a transparent UTXO, or a nullifier for one of
the shielded pools. Check that any attempt to insert both transactions
causes one to be accepted and the other to be rejected.

* Delete a TODO comment that we decided not to do

Co-authored-by: teor <teor@riseup.net>
2021-09-28 01:03:08 +00:00
teor 4567701933
Fix an incorrect assertion when the block locator is at the tip (#2789)
* Fix an incorrect assertion when the block locator is at the tip

This might have been triggered by receiving block hash gossips
from the new Zebra code.

* Add missing tests for zebra-state requests and responses

Specifically:
* `BlockLocator` (populated state only)
* `FindBlockHashes`
* `FindBlockHeaders`

* Test `FindBlock*` before and after the current block

* Add a specific test for bug #2789

* Refactor collect_best_chain_hashes to avoid manual index calculations

* Reword a comment

Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
2021-09-27 22:43:05 +00:00
Alfredo Garcia 825da448c0
Handle zero transaction expirations (#2782)
* handle zero transaction expirations

* add consensus rule doc

Co-authored-by: teor <teor@riseup.net>

Co-authored-by: teor <teor@riseup.net>
2021-09-22 13:44:52 +10:00
dependabot[bot] d178e08986 Bump tracing from 0.1.27 to 0.1.28
Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.27 to 0.1.28.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-0.1.27...tracing-0.1.28)

---
updated-dependencies:
- dependency-name: tracing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
2021-09-20 16:33:13 -04:00
dependabot[bot] 21af477a37 Bump tracing from 0.1.26 to 0.1.27
Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.26 to 0.1.27.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-0.1.26...tracing-0.1.27)

---
updated-dependencies:
- dependency-name: tracing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
2021-09-14 21:01:01 -04:00
dependabot[bot] 9b3f6b3105
Bump sha2 from 0.9.6 to 0.9.8 (#2746)
Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.9.6 to 0.9.8.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](https://github.com/RustCrypto/hashes/compare/sha2-v0.9.6...sha2-v0.9.8)

---
updated-dependencies:
- dependency-name: sha2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
2021-09-14 17:57:58 -04:00
Conrado Gouvea 8971d62727
Update version strings for v1.0.0 alpha.17 release (#2750)
* Change versions for v1.0.0-alpha.17 release
2021-09-14 17:41:50 +00:00
teor 44ac06775b
Reset `ChainTipChange`s on chain fork and network upgrade activation (#2721)
* Use `TipAction::Reset` for initialization and out-of-order blocks

Needs tests for:
- cloning a `ChainTipChange` resets the cloned instance
- skipped updates reset the cloned instance
- changing forks resets the cloned instance

* Use `TipAction::Reset` for network upgrade activation blocks

* Use an `if` expression

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

* Another if expression

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-09-02 12:25:42 +10:00
Conrado Gouvea 1ccb2de7c7
Add transaction downloader and verifier (#2679)
* Add transaction downloader

* Changed mempool downloader to be like inbound

* Verifier working (logs result)

* Apply suggestions from code review

Co-authored-by: teor <teor@riseup.net>

* Apply suggestions from code review

Co-authored-by: teor <teor@riseup.net>

* Fix coinbase check for mempool, improve is_coinbase() docs

* Change other downloads.rs docs to reflect the mempool downloads.rs changes

* Change TIMEOUTs to downloads.rs; add docs

* Renamed is_coinbase() to has_valid_coinbase_transaction_inputs() and contains_coinbase_input() to has_any_coinbase_inputs(); reorder checks

* Validate network upgrade for V4 transactions; check before computing sighash (for V5 too)

* Add block_ prefix to downloads and verifier

* Update zebra-consensus/src/transaction.rs

Co-authored-by: teor <teor@riseup.net>

* Add consensus doc; add more Block prefixes

Co-authored-by: teor <teor@riseup.net>
2021-09-02 00:06:20 +00:00
teor b6fe816473
Add a `ChainTipChange` type to `await` chain tip changes (#2715)
* Rename ChainTipReceiver to CurrentChainTip

`fastmod ChainTipReceiver CurrentChainTip zebra*`

* Update chain tip documentation and variable names

* Basic chain tip change implementation, without resets

Also includes the following name changes:
```
fastmod CurrentChainTip LatestChainTip zebra*
fastmod chain_tip_receiver latest_chain_tip zebra*
```

* Clarify the difference between `LatestChainTip` and `ChainTipChange`
2021-09-01 22:31:16 +00:00
teor dcc0dcd26c
Document consensus rules for version group IDs (#2719)
* Document consensus rules for version group IDs

* Remove spaces at end of lines

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
2021-09-01 17:44:46 +00:00
teor a66ecbc16d
Make chain tip updates and access more efficient (#2695)
* Store precalculated transactions in an `Arc`

Transaction `Hash`es are 32 bytes,
and the minimun transparent transaction size is 54 bytes.
So a full 2MB block can create 1.1MB of transaction hashes.

We use an `Arc` to avoid repeatedly cloning that much data.

* Remove the unused `Block` from `ChainTipBlock`

This drops the block as soon as it isn't needed any more.

Previously, it would stick around until every `ChainTipReceiver`
dropped their `ChainTipBlock`, even if they didn't use the `Block`
at all.
2021-08-30 15:42:07 -03:00
teor 2e1d857b27
Add transaction IDs to the chain tip channel (#2686)
* Re-use finalized blocks for chain tip updates

This avoids serializing and deserializing blocks from the finalized state.

* Optimise tip sender equality checks

* Re-use precalculated block hashes and heights for chain tip updates

* Add chain tip mined transaction IDs

* Doc comment typo

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-08-30 12:38:41 +10:00
dependabot[bot] 424095096a Bump sha2 from 0.9.5 to 0.9.6
Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.9.5 to 0.9.6.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](https://github.com/RustCrypto/hashes/compare/sha2-v0.9.5...sha2-v0.9.6)

---
updated-dependencies:
- dependency-name: sha2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
2021-08-29 21:01:15 -04:00
Alfredo Garcia 968f20d423
Update versions for zebra v1.0.0-alpha.16 release (#2670)
* bump crate versions

* update zebra-script

Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
2021-08-27 22:13:54 +00:00
teor f9c90b3d86
Implement best tip block hashes for ChainTip receivers (#2677)
* Always prefer the non-finalized tip in ChainTipSender

This significantly simplifies the internal implementation of ChainTipSender.

Also make the methods and types a bit more generic.

* Update ChainTipSender with blocks, not heights

Also fix a bug where queued non-finalized blocks would clear the chain tip.

* Provide a best tip hash in ChainTip receivers

* Skip finalized blocks once the non-finalized state is active

* Add tip hash and NoChainTip tests

* Remove a redundant finalized tip update

* Skip `None` updates to the finalized tip

The finalized and non-finalized tips never update to `None`
once they have added at least one block.

* Stop committing finalized queued blocks if there is an error

Also return the highest committed queued block.

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-08-27 19:18:47 +00:00
teor d2e14b22f9
Refactor BestTipHeight into a generic ChainTip sender and receiver (#2676)
* Rename BestTipHeight so it can be generalised to ChainTipSender

`fastmod BestTipHeight ChainTipSender zebra*`

For senders:
`fastmod best_tip_height chain_tip_sender zebra*`

For receivers:
`fastmod best_tip_height chain_tip_receiver zebra*`

* Rename best_tip_height module to chain_tip

* Wrap the chain tip watch channel in a ChainTipReceiver type

* Create a ChainTip trait to avoid tricky crate dependencies

And add convenience impls for optional and empty chain tips.

* Use the ChainTip trait in zebra-network

* Replace `Option<ChainTip>` with `NoChainTip`

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>

Co-authored-by: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
2021-08-27 11:34:33 +10:00
teor 2ed6679069
Use unmined types for transaction verifier mempool requests and responses (#2666)
* Add `Arc<Transaction>` conversions for Transaction IDs

* Use UnminedTxId as the transaction verifier response type

* Use UnminedTx in transaction verifier mempool requests

* Refactor is_mempool into a transaction verifier request method

* Order derives in alphabetical order

Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
2021-08-25 21:02:47 +00:00
teor d7eb01d7f0
Add value pool/balances to non-finalized state (#2656)
* add value balances to non finalized state

* fix 2 tests

* fix remaining constrain issues in tests

* extend value pool test to non finalized

* WIP: fix tests after adding value pools to non-finalized state (#2647)

* Update Chain::eq_internal_state with Chain.value_balance

Also increase the number of cases in its tests,
because they didn't detect this bug.

* Calculate the chain value pool change before `Chain::push`

Code
- store the chain value pool change in `ContextuallyValidBlock`
- convert `PreparedBlock` to `ContextuallyValidBlock` using `with_block_and_spent_utxos`
  (rather than `from` or `into`)
- replace `block_utxos` with `new_outputs` in `PreparedBlock`
- replace `block_utxos` with `chain_value_pool_change` in `ContextuallyValidBlock`

Tests
- create test methods for `PreparedBlock` and `ContextuallyValidBlock`
- use `test_with_zero_chain_pool_change` or `test_with_zero_spent_utxos`
  to make tests pass

* fix conflicts

* build `set_current_value_pool()` only for tests

* remove redundant cfgs

* change cfg of set_current_value_pool()

* Clarify some chain field documentation

* Fix bugs in the non-finalized chain value pool calculations

1. Only revert the chain value pool balances when the tip is popped.
   Don't modify them when the root is finalized.

2. Only update or revert the chain value pool balances once per block.
   (Previously, the block changes were multiplied by the number of *transactions*.)

And make corresponding changes to method names and documentation.

* Add extra proptests to try to identify value balance failures

* Simplify some transaction generation code

* Add extra debugging info to value balance errors

* Actually update non-finalized chain value pools in `UpdateWith`

Previously, we were dropping the updated value pools in the `Ok` result.
So the initial (finalized) chain value pool balances were never modified.

* Rename and document value balance add methods

The names and documentation of these methods were confusing.

* Create genesis-based proptests that check chain value pools

* Increase coverage for some test vectors

* Test each chain value balance calculation for blocks 0-10

* Make continuous blockchain test errors easier to debug

* Test the exact transparent pool values for the first few blocks

Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
2021-08-25 10:57:07 -03:00
Conrado Gouvea bc4194fcb9
ZIP-221/244 auth data commitment validation in checkpoint verifier (#2633)
* Add validation of ZIP-221 and ZIP-244 commitments

* Apply suggestions from code review

Co-authored-by: teor <teor@riseup.net>

* Add auth commitment check in the finalized state

* Reset the verifier when comitting to state fails

* Add explanation comment

* Add test with fake activation heights

* Add generate_valid_commitments flag

* Enable fake activation heights using env var instead of feature

* Also update initial_tip_hash; refactor into progress_from_tip()

* Improve comments

* Add fake activation heights test to CI

* Fix bug that caused commitment trees to not match when generating partial arbitrary chains

* Add ChainHistoryBlockTxAuthCommitmentHash::from_commitments to organize and deduplicate code

* Remove stale comment, improve readability

* Allow overriding with PROPTEST_CASES

* partial_chain_strategy(): don't update note commitment trees when not needed; add comment

Co-authored-by: teor <teor@riseup.net>
2021-08-23 14:17:33 +00:00
teor 4691a871bf
Split ValueBalance methods into NegativeAllowed and NonNegative (#2649)
This helps with type inference when passing values to some methods.

Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
2021-08-20 13:30:38 +00:00