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89 Commits

Author SHA1 Message Date
Henry de Valence 2efb4eb262 consensus: add a static redjubjub::VERIFIER with fallback 2020-08-05 21:28:55 -07:00
Henry de Valence 8d4f154c9f consensus: move redjubjub to new primitives module 
This will let it sit alongside a groth16 verifier.
 2020-08-05 21:28:55 -07:00
Alfredo Garcia ded273413a
Use transcripts in block verify tests (#675) 
* change consensus block tests to transcripts

* fix lints

Co-authored-by: Jane Lusby <jlusby42@gmail.com>

Co-authored-by: Jane Lusby <jlusby42@gmail.com>
 2020-08-05 14:41:41 -07:00
teor ffb6aacf33 feature: Check difficulty in BlockVerifier 2020-08-04 12:29:07 +10:00
teor d4d1edad5a
fix: Use types to avoid ChainVerifier inconsistencies (#797) 2020-07-31 10:21:20 +10:00
teor e74ff18708 refactor: Move the checkpoint list tests to their own file 2020-07-31 07:21:43 +10:00
teor 5b9703f95a fix: Avoid creating a CheckpointVerifier if it is not needed 
Also:
* make sure the checkpoints cover all pre-Sapling blocks
* do some minor refactoring to reduce duplicate code
 2020-07-30 13:30:18 +10:00
teor fbeae99328 fix: Only warn on unexpected high blocks 
High blocks are expected when we restart with most of the chain in our
state.

Also downgrade the message from warn to info.
 2020-07-30 13:30:18 +10:00
teor cf0fd043d4 feature: Update mainnet and testnet checkpoints 2020-07-28 22:27:49 -04:00
teor 396d209638 feature: Add the MinimumDifficulty consensus parameter 2020-07-28 10:34:41 +10:00
teor 1e787aecb9 feature: Check the previous block height in BlockVerifier 
This is a temporary busy-waiting fix.
 2020-07-27 14:14:44 -04:00
teor 2b1e7162b1 feature: Set the testnet Canopy upgrade height 
See ZIP 251 and zcash/zips#385 for details.

Closes #756.
 2020-07-27 14:03:14 -04:00
teor 993532b604 feature: Add a "Genesis" network upgrade 
We can use this network upgrade to implement different consensus rules
and chain context handling for genesis blocks.

Part of the chain state design in #682.
 2020-07-27 14:03:14 -04:00
teor 2d3926e800 fix: Replace a return with unreachable! 2020-07-27 13:49:11 -04:00
Alfredo Garcia 5b3c6e4c6c
Port bash checkpoint scripts to zebra-checkpoints single rust binary (#740) 
* make zebra-checkpoints
* fix LOOKAHEAD_LIMIT scope
* add a default cli path
* change doc usage text
* add tracing
* move MAX_CHECKPOINT_HEIGHT_GAP to zebra-consensus
* do byte_reverse_hex in a map
 2020-07-25 17:53:00 +10:00
teor 2acfcf3a90
Make the CheckpointVerifier handle partial restarts (#736) 
Also put generic bounds on the BlockVerifier struct,
so we get better compilation errors.
 2020-07-24 11:47:48 +10:00
teor 77a1fefa1e
Download genesis (#731) 
* feature: Add more CheckpointVerifier tracing

* fix: Download the genesis block
 2020-07-23 10:56:52 -07:00
Jane Lusby c1a1493159
use dirs crate for default location of state and config (#714) 
* use dirs crate for default location of state and config
* panic if a path isn't specified for zebra-state
 2020-07-23 21:12:20 +10:00
teor 132875198e fix: Simplify ChainVerifier 2020-07-23 03:46:24 -04:00
teor 0e0c36c010 fixup! feature: Add network upgrade activation heights 2020-07-23 15:52:18 +10:00
teor 4b683ea2b1 feature: Add Consensus Branch Ids 2020-07-23 15:52:18 +10:00
teor 359febb2e2 doc: Update a CheckpointList comment 2020-07-23 15:52:18 +10:00
teor c9ee85c3b5 feature: Add network upgrade activation heights 2020-07-23 15:52:18 +10:00
Henry de Valence 4a98b8fa0d Add basic metrics to the syncer. 2020-07-22 21:59:00 -07:00
Henry de Valence c2c2a28e8b Improve tracing output in chain verifier 2020-07-22 21:59:00 -07:00
Jane Lusby 7d4e717182
Add block locator request to state layer (#712) 
* Add block locator request to state layer

* pass genesis in request

* Update zebrad/src/commands/start/sync.rs

* fix errors
 2020-07-22 18:01:31 -07:00
teor cf9bd2c974 diagnostic: Warn on unexpected high blocks 2020-07-23 10:26:25 +10:00
teor 52002ac3c5 feature: Add tracing to chain and checkpoint verifiers 2020-07-23 10:26:25 +10:00
teor e75697300b fix: Remove some dead code lints 2020-07-23 10:26:25 +10:00
teor a998346f4c refactor: Split out a simpler chain::init function 
This new chain::init function will let us hide the BlockVerifier and
CheckpointVerifier from the zebra-consensus public interface.
(If needed.)
 2020-07-23 10:26:25 +10:00
Henry de Valence add093e3bf consensus: fix error parameters in redjubjub::Verifier 2020-07-22 14:29:55 -04:00
teor b8b1239ac4 feature: Implement a basic ChainVerifier service 
The ChainVerifier service chooses between CheckpointVerifier and
BlockVerifier, based on the block's height.
 2020-07-22 12:51:19 +10:00
teor f1a0036824 feature: Expect the hard-coded checkpoint lists to parse 2020-07-22 12:51:19 +10:00
teor 53606dfae8 fix: Stop the BlockVerifier modifying the state 
We're going to make a new ChainVerifier that modifies the state.
 2020-07-22 12:51:19 +10:00
teor b0cd920fad feature: Use the Heartwood protocol version in zebra-network 2020-07-21 10:46:07 -07:00
teor 1b0c0f027f
Add Hard-Coded Checkpoint Lists (#674) 
* Add checkpoint list generation scripts
* Limit the checkpoint block data size
* Limit the checkpoint height gap
* Add Mainnet and Testnet checkpoint lists
* Parse hard-coded checkpoint lists

The lists were generated using the following limits:
- 256 MB spacing, based on block byte size, and
- 2000 blocks.
 2020-07-21 23:11:51 +10:00
Alfredo Garcia fe2a468417
add favicon to generated docs (#681) 2020-07-17 16:45:29 -07:00
teor c13907d1af fix: Combine two matches 2020-07-16 10:06:29 -07:00
teor b648375bbe fix: Hard-code the genesis previous block hash 2020-07-16 10:06:29 -07:00
teor 39e67c8748 feature: Check the genesis hash in checkpoint lists 
And use the consensus parameters to get the genesis previous block hash.
 2020-07-16 10:06:29 -07:00
teor 648d8daf12 feature: Initial consensus parameter module 2020-07-16 10:06:29 -07:00
teor 1915634d2b
Check for bad heights or hashes in checkpoint lists (#639) 
* Add MIN and MAX for BlockHeight and LockTime
* Remove duplicate test cases
* fix a comment about the minimum lock time

The minimum LockTime::Time is 5 November 1985 00:53:20 UTC, so the first
day that only contains valid times is 6 November 1985 (in all timezones).

Similarly, the maximum LockTime::Time is 7 February 2106 06::28::15 UTC,
so the last day that only contains valid times in all time zones is
5 February 2106.

* fix: Reject checkpoint lists with bad hashes or heights

Reject the all-zeroes hash, because it is the parent hash of the genesis
block, and should never appear in a checkpoint list.

Reject checkpoint heights that are greater than the maximum block
height.
 2020-07-16 15:09:22 +10:00
teor 851afad01f
fix: Resist CheckpointVerifier memory DoS attacks (#635) 
* fix: Resist CheckpointVerifier memory DoS attacks

Allow a maximum of 2 queued blocks at each height, as a tradeoff between
efficient bad block rejection, and memory usage.

Closes #628.

* fix: Make max queued blocks at height equal to fanout

* fix: Just allocate all the capacity upfront

* fix: Use with_capacity(1) and reserve_exact(1)
 2020-07-15 13:27:10 -07:00
teor a19fdd9f25 fix: Rename to is_time_valid_at 2020-07-15 09:16:54 -07:00
teor c2e4f7b0a5 refactor: Move the local clock check to a BlockHeader method 2020-07-15 09:16:54 -07:00
teor 5548dffd3b refactor: Move the coinbase first check to a Block method 2020-07-15 09:16:54 -07:00
teor 47bc02ea44 partial revert: Use &Block, not Arc<Block> 2020-07-15 09:16:54 -07:00
Jane Lusby 72ec79dd5e Update zebra-consensus/src/checkpoint/list.rs 
Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
 2020-07-15 09:16:54 -07:00
teor 6f064e0154 refactor: Use Arc<Block> in BlockVerifier 
Arc is a bit more flexible when using futures.

And improve the documentation for coinbase_is_first_check.

Closes #627.
 2020-07-15 09:16:54 -07:00
teor 30effa6a46 doc: Improve checkpoint test comments 
Closes #626.
 2020-07-15 09:16:54 -07:00