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grandpa: report equivocations (#3868)

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* session: runtime api for generating session membership proofs

* grandpa: add runtime api for creating equivocation report txs

* grandpa: submit signed equivocation report transactions

* grandpa: use proper equivocation report type

* grandpa: report equivocations

* grandpa: validate equivocation proof

* grandpa: update to finality-grandpa 0.9.1

* grandpa: fix encoding of session membership proof

* grandpa: initialize set id session mapping for genesis session

* grandpa: fix bug in set_id session validation

* fix compilation

* cleanup from merge conflicts

* cleanup crate tomls

* grandpa: refactor equivocation handling to separate trait

* node-template: fix compilation

* fix test compilation

* bump finality-grandpa to v0.10.2

* rpc: fix runtime version test

* CHERRY-PICK #4200: Add documentation to SubmitSignedTransaction and actually make it work

Squashed commit of the following:

commit 4f2cb0b1c588a06f2f3b478bb4b28b5cb29d54b9
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Tue Dec 3 16:29:33 2019 +0100

    Split the method to avoid confusing type error message.

commit c5bf24eeaaf902add89ed1b046b22c4a4aaeb2cd
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Tue Dec 3 16:19:55 2019 +0100

    Make accounts optional, fix logic.

commit 97db1ef556e023cf6847e5ffdb036c0e3ea6fb0a
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Tue Dec 3 10:06:20 2019 +0100

    Remove warning.

commit 535f5c116d1a2e826eaf90c3f7e6798e443d61d8
Merge: 516257217 0f1a5f651
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Tue Dec 3 07:08:05 2019 +0100

    Merge branch 'master' into td-signed-transactions

commit 516257217bac89fcebd083712f4ea68b7b23b55a
Merge: ac98248c6 2e68c80c2
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Mon Dec 2 13:57:25 2019 +0100

    Merge branch 'master' into td-signed-transactions

commit ac98248c6c56cff381130645a82a13d29933cf83
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Mon Nov 25 17:34:52 2019 +0100

    Forgotten import.

commit 67a3c19031506c28e31c6bc4a90fff62d467dd58
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Mon Nov 25 17:32:10 2019 +0100

    Fix naming and bounds.

commit 93e768ea9df97a4629fca1f9bc4b108fdb33f876
Author: Tomasz Drwięga <tomasz@parity.io>
Date:   Mon Nov 25 17:01:05 2019 +0100

    Add documentation to signed transactions and actually make them work.

* grandpa: skip block initialization on report submission method

* primitives: allow transaction pool access by default for offchain calls

* grandpa: unused parameters

* grandpa: remove unused method

* grandpa: enable equivocation reporting

* grandpa: add workaround for parameter encoding

* grandpa: fix localized_payload calls in tests

* fix submit_report_equivocation_extrinsic in runtimes

* node: fix submit transaction test compilation

* node: bump spec_version

* rpc: fix api version test

* grandpa: allow custom equivocation offence type

* grandpa: add test for authorities::next_change_height

* grandpa: cleanup report_equivocation function

* node: move reporting app crypto to node-primitives

* grandpa: move equivocation traits to own module

* grandpa: rename app-crypto crate import

* grandpa: export equivocation types

* node: bump spec_version

* grandpa: rename EquivocationReport to EquivocationProof

* grandpa: add missing docs to primitives

* grandpa: add missing docs to equivocation

* node: fix compilation

* grandpa: add missing docs to pallet

* node: bump spec_version

* fix whitespace

* grandpa: return error on offence reporting

* grandpa: expose session and validator count in proofs through traits

* grandpa: use strong key in module KeyOwnerProofSystem

* grandpa: move key ownership proof to grandpa runtime api

* grandpa: remove unnecessary cloning when checking equivocation proof

* grandpa: make report_equivocation a method in Environment

* support: implement KeyOwnerProofSystem for ()

* grandpa: move KeyOwnerProofSystem to module trait

* test-utils: fix runtime compilation

* grandpa: fix test compilation

* grandpa: fix test compilation after merge

* grandpa: simplify transaction submission types

* grandpa: validate equivocation report in signed extension

* client: fix test

* node: use ValidateEquivocationReport signed extension

* grandpa: expose key ownership proof under opaque type

* grandpa: better docs on key ownership proofs

* grandpa: add note about signed extension

* grandpa: add ValidateEquivocationReport::new

* grandpa: remove skip_initialize_block from runtime api

* grandpa: use new offchain transaction submission API

* grandpa: take set_id in generate_key_ownership_proof

* grandpa: update to finality-grandpa v0.12.2

* grandpa: cleanup usages of AuthoritySet::current

* grandpa: fix test

* grandpa: add mocking utilities for equivocation reporting

* grandpa: add test for equivocation reporting

* grandpa: move SetIdSession initialization

* grandpa: add more tests

* node: enable historical session manager

* node: bump spec_version

* node: use strong key types in KeyOwnerProofSystem definitions

* grandpa: export GrandpaEquivocationOffence type
This commit is contained in:
André Silva
2020-05-06 17:25:51 +01:00
committed by GitHub
parent a1127f8f9d
commit fbd2ac8f3b
38 changed files with 2249 additions and 296 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/client/finality-grandpa/src/communication/mod.rs
+9 -77
View File
@@ -610,30 +610,6 @@ impl<B: BlockT, N: Network<B>> Clone for NetworkBridge<B, N> {
}
}
/// Encode round message localized to a given round and set id.
pub(crate) fn localized_payload<E: Encode>(
round: RoundNumber,
set_id: SetIdNumber,
message: &E,
) -> Vec<u8> {
let mut buf = Vec::new();
localized_payload_with_buffer(round, set_id, message, &mut buf);
buf
}
/// Encode round message localized to a given round and set id using the given
/// buffer. The given buffer will be cleared and the resulting encoded payload
/// will always be written to the start of the buffer.
pub(crate) fn localized_payload_with_buffer<E: Encode>(
round: RoundNumber,
set_id: SetIdNumber,
message: &E,
buf: &mut Vec<u8>,
) {
buf.clear();
(message, round, set_id).encode_to(buf)
}
/// Type-safe wrapper around a round number.
#[derive(Debug, Clone, Copy, Eq, PartialEq, PartialOrd, Ord, Encode, Decode)]
pub struct Round(pub RoundNumber);
@@ -642,48 +618,6 @@ pub struct Round(pub RoundNumber);
#[derive(Debug, Clone, Copy, Eq, PartialEq, PartialOrd, Ord, Encode, Decode)]
pub struct SetId(pub SetIdNumber);
/// Check a message signature by encoding the message as a localized payload and
/// verifying the provided signature using the expected authority id.
pub(crate) fn check_message_sig<Block: BlockT>(
message: &Message<Block>,
id: &AuthorityId,
signature: &AuthoritySignature,
round: RoundNumber,
set_id: SetIdNumber,
) -> Result<(), ()> {
check_message_sig_with_buffer::<Block>(
message,
id,
signature,
round,
set_id,
&mut Vec::new(),
)
}
/// Check a message signature by encoding the message as a localized payload and
/// verifying the provided signature using the expected authority id.
/// The encoding necessary to verify the signature will be done using the given
/// buffer, the original content of the buffer will be cleared.
pub(crate) fn check_message_sig_with_buffer<Block: BlockT>(
message: &Message<Block>,
id: &AuthorityId,
signature: &AuthoritySignature,
round: RoundNumber,
set_id: SetIdNumber,
buf: &mut Vec<u8>,
) -> Result<(), ()> {
let as_public = id.clone();
localized_payload_with_buffer(round, set_id, message, buf);
if AuthorityPair::verify(signature, buf, &as_public) {
Ok(())
} else {
debug!(target: "afg", "Bad signature on message from {:?}", id);
Err(())
}
}
/// A sink for outgoing messages to the network. Any messages that are sent will
/// be replaced, as appropriate, according to the given `HasVoted`.
/// NOTE: The votes are stored unsigned, which means that the signatures need to
@@ -731,16 +665,14 @@ impl<Block: BlockT> Sink<Message<Block>> for OutgoingMessages<Block>
}
// when locals exist, sign messages on import
if let Some((ref pair, ref local_id)) = self.locals {
let encoded = localized_payload(self.round, self.set_id, &msg);
let signature = pair.sign(&encoded[..]);
if let Some((ref pair, _)) = self.locals {
let target_hash = msg.target().0.clone();
let signed = SignedMessage::<Block> {
message: msg,
signature,
id: local_id.clone(),
};
let signed = sp_finality_grandpa::sign_message(
msg,
pair,
self.round,
self.set_id,
);
let message = GossipMessage::Vote(VoteMessage::<Block> {
message: signed.clone(),
@@ -828,7 +760,7 @@ fn check_compact_commit<Block: BlockT>(
use crate::communication::gossip::Misbehavior;
use finality_grandpa::Message as GrandpaMessage;
if let Err(()) = check_message_sig_with_buffer::<Block>(
if let Err(()) = sp_finality_grandpa::check_message_signature_with_buffer(
&GrandpaMessage::Precommit(precommit.clone()),
id,
sig,
@@ -916,7 +848,7 @@ fn check_catch_up<Block: BlockT>(
for (msg, id, sig) in messages {
signatures_checked += 1;
if let Err(()) = check_message_sig_with_buffer::<B>(
if let Err(()) = sp_finality_grandpa::check_message_signature_with_buffer(
&msg,
id,
sig,