It was previously used by the now removed `lite` package.

## Description

adding in some more to/from methods/functions

Closes: #XXX

## Description

Add json tags to duplicate evidence 

Closes: #4958

This PR removes lite & renames lite2 to light throughout the repo

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

Closes: #4944

## Description

- remove keyname suffix from keys


Closes: #2228

* proto: move mempool to proto

- changes according to moving the mempool reactor to proto

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

Closes: #2883

These test cases are extremely slow when running with the race detector, often taking more that 2 minutes on my local machine. I can easily see them timing out on the much slower CI machines, causing these failures:

```
panic: test timed out after 5m0s

goroutine 234 [running]:
testing.(*M).startAlarm.func1()
	/usr/local/go/src/testing/testing.go:1460 +0x11c
created by time.goFunc
	/usr/local/go/src/time/sleep.go:168 +0x52

goroutine 1 [chan receive, 4 minutes]:
testing.(*T).Run(0xc000172c60, 0x107a5a2, 0x22, 0x11bfc68, 0x1)
	/usr/local/go/src/testing/testing.go:1044 +0x699
testing.runTests.func1(0xc000172c60)
	/usr/local/go/src/testing/testing.go:1285 +0xa7
testing.tRunner(0xc000172c60, 0xc00012bcc8)
	/usr/local/go/src/testing/testing.go:992 +0x1ec
testing.runTests(0xc00000e2c0, 0x1901500, 0x72, 0x72, 0x0)
	/usr/local/go/src/testing/testing.go:1283 +0x528
testing.(*M).Run(0xc000214380, 0x0)
	/usr/local/go/src/testing/testing.go:1200 +0x300
github.com/tendermint/tendermint/types.TestMain(0xc000214380)
	/go/src/github.com/tendermint/tendermint/types/block_test.go:30 +0x59
main.main()
	_testmain.go:380 +0x334

goroutine 255 [runnable]:
bytes.Equal(...)
	/usr/local/go/src/bytes/bytes.go:20
github.com/tendermint/tendermint/types.(*ValidatorSet).GetByAddress(0xc005499020, 0xc006056650, 0x5, 0x8, 0x13af, 0xc005514100)
	/go/src/github.com/tendermint/tendermint/types/validator_set.go:253 +0xfd
github.com/tendermint/tendermint/types.verifyUpdates.func1(0xc00614b940, 0xc005499020, 0x47cd)
	/go/src/github.com/tendermint/tendermint/types/validator_set.go:415 +0x84
github.com/tendermint/tendermint/types.verifyUpdates(0xc006110000, 0x11b7, 0x1780, 0xc005499020, 0xb52ff, 0x0, 0x0, 0x5c9)
	/go/src/github.com/tendermint/tendermint/types/validator_set.go:429 +0x220
github.com/tendermint/tendermint/types.(*ValidatorSet).updateWithChangeSet(0xc005499020, 0xc00602c000, 0x1780, 0x1780, 0xc006098201, 0xc00608d4b8, 0xc006037bf8)
	/go/src/github.com/tendermint/tendermint/types/validator_set.go:600 +0x2f3
github.com/tendermint/tendermint/types.(*ValidatorSet).UpdateWithChangeSet(0xc005499020, 0xc00602c000, 0x1780, 0x1780, 0x1780, 0x1780)
	/go/src/github.com/tendermint/tendermint/types/validator_set.go:636 +0x78
github.com/tendermint/tendermint/types.applyChangesToValSet(0xc0005c8ea0, 0x0, 0x0, 0xc005499020, 0xc0005d1160, 0x3, 0x3)
	/go/src/github.com/tendermint/tendermint/types/validator_set_test.go:1169 +0x1bb
github.com/tendermint/tendermint/types.verifyValSetUpdatePriorityOrder(0xc0005c8ea0, 0xc005499020, 0x0, 0x0, 0xc005600000, 0x2710, 0x2710, 0xc0055c8000, 0x5c9, 0x5c9, ...)
	/go/src/github.com/tendermint/tendermint/types/validator_set_test.go:1239 +0x217
github.com/tendermint/tendermint/types.TestValSetUpdatePriorityOrderTests(0xc0005c8ea0)
	/go/src/github.com/tendermint/tendermint/types/validator_set_test.go:1228 +0x1205
testing.tRunner(0xc0005c8ea0, 0x11bfc68)
	/usr/local/go/src/testing/testing.go:992 +0x1ec
created by testing.(*T).Run
	/usr/local/go/src/testing/testing.go:1043 +0x661
FAIL	github.com/tendermint/tendermint/types	300.677s
FAIL
```

in TestValSetUpdatePriorityOrderTests https://app.circleci.com/pipelines/github/tendermint/tendermint/3849/workflows/6d241fc8-72a8-4a3b-b3fc-887a48518f82/jobs/114996

also, reduce the number of reactors in TestReactorBroadcastTxMessage https://app.circleci.com/pipelines/github/tendermint/tendermint/3797/workflows/935cda34-dfb3-46e9-8257-92277171c91b/jobs/114562

## Description

these proto files are meant to help unblock ibc in their quest of migrating the ibc module to proto.

Closes: #XXX

prevent proposer from proposing duplicate pieces of evidence

Closes #4183

Closes #4603

Commands used (VIM):

```
:args `rg -l errors.Wrap`
:argdo normal @q | update
```

where q is a macros rewriting the `errors.Wrap` to `fmt.Errorf`.

## Description

regenerate proto stubs

I do find max_num to be vague. possibly renaming to max_entries or max_evidence_entries may be more descriptive?

Closes: #XXX

creates a proof of lock change which is an array of votes that proves the validator was permitted to change locked block and vote again. This proof is stored in the evidence pool and is used as a part of amnesia evidence

The number of evidence that can be committed in a single block is capped by a new evidence parameter called MaxNum

plus make sure LastCommit is always non-nil

Closes #4783 

It looks like we're validating Commit twice. Also, height and blockID params were coming from the commit, so no need to pass them separately.

* consensus: fix TestSimulateValidatorsChange

* fix selfIndex calculation

* exit from goroutine after 1 sec

* reuse the function

thus enabling faster commit verification assuming non uniform distribution of power.

Closes #2478

spec: https://github.com/tendermint/spec/pull/91

## Description
- enable nolintlint
- disable linting on tests

Closes: #XXX

in VerifyCommitTrusting

Closes #4755

this pr brings over the removal of pubkey from duplicatevote evidence from proto-breakage

ref #4580

- Move core stateless validation of the Header type to a ValidateBasic method.
- Call header.ValidateBasic during a SignedHeader validation.
- Call header.ValidateBasic during a PhantomValidatorEvidence validation.
- Call header.ValidateBasic during a LunaticValidatorEvidence validation.

lite tests are skipped since the package is deprecated, no need to waste time on it

closes: #4572

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

The PR added a new field `index` to event attribute, that will cause indexer service to index the event if set to true.

Closes: #4530

This PR contains logic for both submitting an evidence by the light client (lite2 package) and receiving it on the Tendermint side (/broadcast_evidence RPC and/or EvidenceReactor#Receive). Upon receiving the ConflictingHeadersEvidence (introduced by this PR), the Tendermint validates it, then breaks it down into smaller pieces (DuplicateVoteEvidence, LunaticValidatorEvidence, PhantomValidatorEvidence, PotentialAmnesiaEvidence). Afterwards, each piece of evidence is verified against the state of the full node and added to the pool, from which it's reaped upon block creation.

* rpc/client: do not pass height param if height ptr is nil

* rpc/core: validate incoming evidence!

* only accept ConflictingHeadersEvidence if one

of the headers is committed from this full node's perspective

This simplifies the code. Plus, if there are multiple forks, we'll
likely to receive multiple ConflictingHeadersEvidence anyway.

* swap CommitSig with Vote in LunaticValidatorEvidence

Vote is needed to validate signature

* no need to embed client

http is a provider and should not be used as a client

Closes #4670

* lint: add review dog

- golangci is being deprecated on the 15th

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* prevent faulty double voting error

* create test

* clean tests

* clean tests

Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

* format: add format cmd & goimport repo

- replaced format command
- added goimports to format command
- ran goimports

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* fix outliers & undo proto file changes

- :P

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

closes #3602

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

* test functions take time.Now and other minor changes

* updated remaining test files

* Update validation_test.go

* fix typo

* go fmt

* import time

Co-authored-by: Marko <marbar3778@yahoo.com>

Closes #4417

* proto: minor linting

minor linting after working with the proto files in the sdk.

there is no logic change just spacing fixes

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* hardcore linting

* rename adjusted to adjacent

Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r352140829

* rename ErrTooMuchChange to ErrNotEnoughVotingPowerSigned

Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r352142785

* verify commit is properly signed

* remove no longer trusted headers

* restore trustedHeader and trustedNextVals

* check trustedHeader using options

Refs https://github.com/tendermint/tendermint/pull/4209#issuecomment-562462165

* use correct var when checking if headers are adjacent

in bisection func
+ replace TODO with a comment

https://github.com/tendermint/tendermint/pull/3989#discussion_r352125455

* return header in VerifyHeaderAtHeight

because that way we avoid DB call

+ add godoc comments
+ check if there are no headers yet in AutoClient

https://github.com/tendermint/tendermint/pull/3989#pullrequestreview-315454506

* TestVerifyAdjacentHeaders: add 2 more test-cases

+ add TestVerifyReturnsErrorIfTrustLevelIsInvalid

* lite: avoid overflow when parsing key in db store!

* lite: rename AutoClient#Err to Errs

* lite: add a test for AutoClient

* lite: fix keyPattern and call itr.Next in db store

* lite: add two tests for db store

* lite: add TestClientRemovesNoLongerTrustedHeaders

* lite: test Client#Cleanup

* lite: test restoring trustedHeader

https://github.com/tendermint/tendermint/pull/4209#issuecomment-562462165

* lite: comment out unused code in test_helpers

* fix TestVerifyReturnsErrorIfTrustLevelIsInvalid after merge

* change defaultRemoveNoLongerTrustedHeadersPeriod

and add docs

* write more doc

* lite: uncomment testable examples

* use stdlog.Fatal to stop AutoClient tests

* make lll linter happy

* separate errors for 2 cases

- the validator set of a skipped header cannot be trusted, i.e. <1/3rd
  of h1 validator set has signed (new error, something like
  ErrNewValSetCantBeTrusted)
- the validator set is trusted but < 2/3rds has signed
  (ErrNewHeaderCantBeTrusted)

https://github.com/tendermint/tendermint/pull/4209#discussion_r360331253

* remove all headers (even the last one) that are outside

of the trusting period. By doing this, we avoid checking the
trustedHeader's hash in checkTrustedHeaderUsingOptions (case #1).

https://github.com/tendermint/tendermint/pull/4209#discussion_r360332460

* explain restoreTrustedHeaderAndNextVals better

https://github.com/tendermint/tendermint/pull/4209#discussion_r360602328

* add ConfirmationFunction option

for optionally prompting for user input Y/n before removing headers

Refs https://github.com/tendermint/tendermint/pull/4209#discussion_r360602945

* make cleaning optional

https://github.com/tendermint/tendermint/pull/4209#discussion_r364838189

* return error when user refused to remove headers

* check for double votes in VerifyCommitTrusting

* leave only ErrNewValSetCantBeTrusted error

to differenciate between h2Vals.VerifyCommit and
h1NextVals.VerifyCommitTrusting

* fix example tests

* remove unnecessary if condition

https://github.com/tendermint/tendermint/pull/4209#discussion_r365171847

It will be handled by the above switch.

* verifyCommitBasic does not depend on vals

Co-authored-by: Marko <marbar3778@yahoo.com>

* evidence: introduce time.Duration to evidence params

- add time.duration to evidence
- this pr is taking pr #2606 and updating it to use both time and height

- closes #2565

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* fix testing and genesis cfg in signer harness

* remove debugging fmt

* change maxageheight to maxagenumblocks, rename other things to block instead of height

* further check of duration

* check duration to not send peers outdated evidence

* change some lines, onward and upward

* refactor evidence package

* add a changelog pending entry

* make mockbadevidence have time and use it

* add what could possibly be called a test case

* remove mockbadevidence and mockgoodevidence in favor of mockevidence

* add a comment for err that is returned

* add a changelog for removal of good & bad evidence

* add a test for adding evidence

* fix test

* add ev to types in testcase

* Update evidence/pool_test.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update evidence/pool_test.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* fix tests

* fix linting

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>