Source file validate.ml
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open Validate_errors
open Alpha_context
(** Since the expected features of preendorsement and endorsement are
the same for all operations in the considered block, we compute
them once and for all at the begining of the block.
See [expected_features_for_application],
[expected_features_for_construction], and
[expected_features_for_partial_construction] in the [Consensus]
module below. *)
type expected_features = {
level : Raw_level.t;
round : Round.t option;
(** This always contains a value, except for the case of
preendorsements during block construction. See
[Consensus.check_round_equal] below for its usage. *)
branch : Block_hash.t;
payload_hash : Block_payload_hash.t;
}
type expected_preendorsement =
| Expected_preendorsement of {
expected_features : expected_features;
block_round : Round.t option;
}
(** During block validation or construction, we must also check
that the preendorsement round is lower than the block
round. In mempool mode, this field is [None]. *)
| No_locked_round_for_block_validation_preendorsement
(** A preexisting block whose fitness indicates no locked round
should contain no preendorsements. *)
| Fresh_proposal_for_construction_preendorsement
(** A constructed block with a fresh proposal should contain no
preendorsements. *)
| No_expected_branch_for_partial_construction_preendorsement of {
expected_level : Raw_level.t;
}
(** See [No_expected_branch_for_partial_construction_endorsement] below. *)
| No_predecessor_info_cannot_validate_preendorsement
(** We do not have access to predecessor level, round, etc. so any
preendorsement validation will fail. *)
type expected_endorsement =
| Expected_endorsement of {expected_features : expected_features}
| No_expected_branch_for_block_endorsement
(** The context contains no branch: this happens to the first block
that uses the Tenderbake consensus algorithm. This block contains
no endorsements. *)
| No_expected_branch_for_partial_construction_endorsement of {
expected_level : Raw_level.t;
}
(** Same as [No_expected_branch_for_block_endorsement]. This has a
separate constructor because the error raised is distinct: in
mempool mode, we simply assume that we have received a
preendorsement for a future block to which we have not switched
yet. *)
| No_predecessor_info_cannot_validate_endorsement
(** We do not have access to predecessor level, round, etc. so any
endorsement validation will fail. *)
type all_expected_consensus_features = {
expected_preendorsement : expected_preendorsement;
expected_endorsement : expected_endorsement;
expected_grandparent_endorsement_for_partial_construction :
expected_features option;
(** This only has a value in Mempool mode and when the [ctxt] has a
[grandparent_branch]; it is [None] in all other cases. *)
}
type consensus_info = {
all_expected_features : all_expected_consensus_features;
preendorsement_slot_map : (Consensus_key.pk * int) Slot.Map.t;
endorsement_slot_map : (Consensus_key.pk * int) Slot.Map.t;
}
let init_consensus_info ctxt all_expected_features =
{
all_expected_features;
preendorsement_slot_map = Consensus.allowed_preendorsements ctxt;
endorsement_slot_map = Consensus.allowed_endorsements ctxt;
}
module Consensus_content_map = Map.Make (struct
type t = consensus_content
let compare {slot; level; round; block_payload_hash}
{
slot = slot';
level = level';
round = round';
block_payload_hash = block_payload_hash';
} =
Compare.or_else (Raw_level.compare level level') @@ fun () ->
Compare.or_else (Slot.compare slot slot') @@ fun () ->
Compare.or_else (Round.compare round round') @@ fun () ->
Compare.or_else
(Block_payload_hash.compare block_payload_hash block_payload_hash')
@@ fun () -> 0
end)
type consensus_state = {
predecessor_level : Raw_level.t;
preendorsements_seen : Operation_hash.t Slot.Map.t;
endorsements_seen : Operation_hash.t Slot.Map.t;
grandparent_endorsements_seen : Operation_hash.t Slot.Map.t;
dal_slot_availability_seen : Operation_hash.t Signature.Public_key_hash.Map.t;
}
let slot_map_encoding element_encoding =
let open Data_encoding in
conv
(fun slot_map -> Slot.Map.bindings slot_map)
(fun l -> Slot.Map.(List.fold_left (fun m (k, v) -> add k v m) empty l))
(list (tup2 Slot.encoding element_encoding))
let consensus_state_encoding =
let open Data_encoding in
def "consensus_state"
@@ conv
(fun {
predecessor_level;
preendorsements_seen;
endorsements_seen;
grandparent_endorsements_seen;
dal_slot_availability_seen;
} ->
( predecessor_level,
preendorsements_seen,
endorsements_seen,
grandparent_endorsements_seen,
dal_slot_availability_seen ))
(fun ( predecessor_level,
preendorsements_seen,
endorsements_seen,
grandparent_endorsements_seen,
dal_slot_availability_seen ) ->
{
predecessor_level;
preendorsements_seen;
endorsements_seen;
grandparent_endorsements_seen;
dal_slot_availability_seen;
})
(obj5
(req "predecessor_level" Raw_level.encoding)
(req
"preendorsements_seen"
(slot_map_encoding Operation_hash.encoding))
(req "endorsements_seen" (slot_map_encoding Operation_hash.encoding))
(req
"grandparent_endorsements_seen"
(slot_map_encoding Operation_hash.encoding))
(req
"dal_slot_availability_seen"
(Signature.Public_key_hash.Map.encoding Operation_hash.encoding)))
let init_consensus_state ~predecessor_level =
{
predecessor_level;
preendorsements_seen = Slot.Map.empty;
endorsements_seen = Slot.Map.empty;
grandparent_endorsements_seen = Slot.Map.empty;
dal_slot_availability_seen = Signature.Public_key_hash.Map.empty;
}
type voting_state = {
proposals_seen : Operation_hash.t Signature.Public_key_hash.Map.t;
(** Summary of all Proposals operations validated in the current
block/mempool, indexed by the operation's source aka
proposer. This includes Testnet dictators proposals. *)
ballots_seen : Operation_hash.t Signature.Public_key_hash.Map.t;
(** To each delegate that has submitted a ballot in a previously
validated operation, associates the hash of this operation. *)
}
let voting_state_encoding =
let open Data_encoding in
def "voting_state"
@@ conv
(fun {proposals_seen; ballots_seen} -> (proposals_seen, ballots_seen))
(fun (proposals_seen, ballots_seen) -> {proposals_seen; ballots_seen})
(obj2
(req
"proposals_seen"
(Signature.Public_key_hash.Map.encoding Operation_hash.encoding))
(req
"ballots_seen"
(Signature.Public_key_hash.Map.encoding Operation_hash.encoding)))
module Double_baking_evidence_map = struct
include Map.Make (struct
type t = Raw_level.t * Round.t
let compare (l, r) (l', r') =
Compare.or_else (Raw_level.compare l l') @@ fun () ->
Compare.or_else (Round.compare r r') @@ fun () -> 0
end)
let encoding elt_encoding =
Data_encoding.conv
(fun map -> bindings map)
(fun l -> List.fold_left (fun m (k, v) -> add k v m) empty l)
Data_encoding.(
list (tup2 (tup2 Raw_level.encoding Round.encoding) elt_encoding))
end
module Double_endorsing_evidence_map = struct
include Map.Make (struct
type t = Raw_level.t * Round.t * Slot.t
let compare (l, r, s) (l', r', s') =
Compare.or_else (Raw_level.compare l l') @@ fun () ->
Compare.or_else (Round.compare r r') @@ fun () ->
Compare.or_else (Slot.compare s s') @@ fun () -> 0
end)
let encoding elt_encoding =
Data_encoding.conv
(fun map -> bindings map)
(fun l -> List.fold_left (fun m (k, v) -> add k v m) empty l)
Data_encoding.(
list
(tup2
(tup3 Raw_level.encoding Round.encoding Slot.encoding)
elt_encoding))
end
(** State used and modified when validating anonymous operations.
These fields are used to enforce that we do not validate the same
operation multiple times.
Note that as part of {!state}, these maps live
in memory. They are not explicitly bounded here, however:
- In block validation mode, they are bounded by the number of
anonymous operations allowed in the block.
- In mempool mode, bounding the number of operations in this map
is the responsability of the prevalidator on the shell side. *)
type anonymous_state = {
activation_pkhs_seen : Operation_hash.t Ed25519.Public_key_hash.Map.t;
double_baking_evidences_seen : Operation_hash.t Double_baking_evidence_map.t;
double_endorsing_evidences_seen :
Operation_hash.t Double_endorsing_evidence_map.t;
seed_nonce_levels_seen : Operation_hash.t Raw_level.Map.t;
vdf_solution_seen : Operation_hash.t option;
}
let raw_level_map_encoding elt_encoding =
let open Data_encoding in
conv
(fun map -> Raw_level.Map.bindings map)
(fun l ->
Raw_level.Map.(List.fold_left (fun m (k, v) -> add k v m) empty l))
(list (tup2 Raw_level.encoding elt_encoding))
let anonymous_state_encoding =
let open Data_encoding in
def "anonymous_state"
@@ conv
(fun {
activation_pkhs_seen;
double_baking_evidences_seen;
double_endorsing_evidences_seen;
seed_nonce_levels_seen;
vdf_solution_seen;
} ->
( activation_pkhs_seen,
double_baking_evidences_seen,
double_endorsing_evidences_seen,
seed_nonce_levels_seen,
vdf_solution_seen ))
(fun ( activation_pkhs_seen,
double_baking_evidences_seen,
double_endorsing_evidences_seen,
seed_nonce_levels_seen,
vdf_solution_seen ) ->
{
activation_pkhs_seen;
double_baking_evidences_seen;
double_endorsing_evidences_seen;
seed_nonce_levels_seen;
vdf_solution_seen;
})
(obj5
(req
"activation_pkhs_seen"
(Ed25519.Public_key_hash.Map.encoding Operation_hash.encoding))
(req
"double_baking_evidences_seen"
(Double_baking_evidence_map.encoding Operation_hash.encoding))
(req
"double_endorsing_evidences_seen"
(Double_endorsing_evidence_map.encoding Operation_hash.encoding))
(req
"seed_nonce_levels_seen"
(raw_level_map_encoding Operation_hash.encoding))
(opt "vdf_solution_seen" Operation_hash.encoding))
let empty_anonymous_state =
{
activation_pkhs_seen = Ed25519.Public_key_hash.Map.empty;
double_baking_evidences_seen = Double_baking_evidence_map.empty;
double_endorsing_evidences_seen = Double_endorsing_evidence_map.empty;
seed_nonce_levels_seen = Raw_level.Map.empty;
vdf_solution_seen = None;
}
(** Static information used to validate manager operations. *)
type manager_info = {
hard_storage_limit_per_operation : Z.t;
hard_gas_limit_per_operation : Gas.Arith.integral;
}
let init_manager_info ctxt =
{
hard_storage_limit_per_operation =
Constants.hard_storage_limit_per_operation ctxt;
hard_gas_limit_per_operation = Constants.hard_gas_limit_per_operation ctxt;
}
(** State used and modified when validating manager operations. *)
type manager_state = {
managers_seen : Operation_hash.t Signature.Public_key_hash.Map.t;
(** To enforce the one-operation-per manager-per-block restriction
(1M). The operation hash lets us indicate the conflicting
operation in the {!Manager_restriction} error.
Note that as part of {!state}, this map
lives in memory. It is not explicitly bounded here, however:
- In block validation mode, it is bounded by the number of
manager operations allowed in the block.
- In mempool mode, bounding the number of operations in this
map is the responsability of the mempool. (E.g. the plugin used
by Octez has a [max_prechecked_manager_operations] parameter to
ensure this.) *)
}
let manager_state_encoding =
let open Data_encoding in
def "manager_state"
@@ conv
(fun {managers_seen} -> managers_seen)
(fun managers_seen -> {managers_seen})
(obj1
(req
"managers_seen"
(Signature.Public_key_hash.Map.encoding Operation_hash.encoding)))
let empty_manager_state = {managers_seen = Signature.Public_key_hash.Map.empty}
(** Mode-dependent information needed in final checks. *)
type application_info = {
fitness : Fitness.t;
block_producer : Consensus_key.pk;
payload_producer : Consensus_key.pk;
predecessor_hash : Block_hash.t;
block_data_contents : Block_header.contents;
}
(** Circumstances in which operations are validated:
- [Application] is used for the validation of preexisting block.
Corresponds to [Application] of {!Main.validation_mode}.
- [Partial_validation] is used to partially validate preexisting
block. Corresponds to [Partial_validation] of
{!Main.validation_mode}.
- [Construction] is used for the construction of a new block.
Corresponds to [Full_construction] of {!Main.validation_mode}.
- [Mempool] is used by the mempool (either directly or through the
plugin). Corresponds to [Partial_construction] of
{!Main.validation_mode}.
If you add a new mode, please make sure that it has a way to bound
the size of the map {!recfield:managers_seen}. *)
type mode =
| Application of application_info
| Partial_validation of application_info
| Construction of {
predecessor_round : Round.t;
predecessor_hash : Block_hash.t;
round : Round.t;
block_data_contents : Block_header.contents;
block_producer : Consensus_key.pk;
payload_producer : Consensus_key.pk;
}
| Mempool
(** {2 Definition and initialization of [info] and [state]} *)
type info = {
ctxt : t; (** The context at the beginning of the block or mempool. *)
mode : mode;
chain_id : Chain_id.t; (** Needed for signature checks. *)
current_level : Level.t;
consensus_info : consensus_info;
manager_info : manager_info;
}
type operation_conflict_state = {
consensus_state : consensus_state;
voting_state : voting_state;
anonymous_state : anonymous_state;
manager_state : manager_state;
}
let operation_conflict_state_encoding =
let open Data_encoding in
def "operation_conflict_state"
@@ conv
(fun {consensus_state; voting_state; anonymous_state; manager_state} ->
(consensus_state, voting_state, anonymous_state, manager_state))
(fun (consensus_state, voting_state, anonymous_state, manager_state) ->
{consensus_state; voting_state; anonymous_state; manager_state})
(obj4
(req "consensus_state" consensus_state_encoding)
(req "voting_state" voting_state_encoding)
(req "anonymous_state" anonymous_state_encoding)
(req "manager_state" manager_state_encoding))
type block_state = {
op_count : int;
remaining_block_gas : Gas.Arith.fp;
recorded_operations_rev : Operation_hash.t list;
last_op_validation_pass : int option;
locked_round_evidence : (Round.t * int) option;
endorsement_power : int;
}
type validation_state = {
info : info;
operation_state : operation_conflict_state;
block_state : block_state;
}
let ok_unit = Result_syntax.return_unit
let init_info ctxt mode chain_id all_expected_consensus_characteristics =
{
ctxt;
mode;
chain_id;
current_level = Level.current ctxt;
consensus_info =
init_consensus_info ctxt all_expected_consensus_characteristics;
manager_info = init_manager_info ctxt;
}
let empty_voting_state =
{
proposals_seen = Signature.Public_key_hash.Map.empty;
ballots_seen = Signature.Public_key_hash.Map.empty;
}
let init_operation_conflict_state ~predecessor_level =
{
consensus_state = init_consensus_state ~predecessor_level;
voting_state = empty_voting_state;
anonymous_state = empty_anonymous_state;
manager_state = empty_manager_state;
}
let init_block_state vi =
{
op_count = 0;
remaining_block_gas =
Gas.Arith.fp (Constants.hard_gas_limit_per_block vi.ctxt);
recorded_operations_rev = [];
last_op_validation_pass = None;
locked_round_evidence = None;
endorsement_power = 0;
}
let get_initial_ctxt {info; _} = info.ctxt
(** Validation of consensus operations (validation pass [0]):
preendorsement, endorsement, and dal_slot_availability. *)
module Consensus = struct
let expected_endorsement_features ~predecessor_level ~predecessor_round branch
payload_hash =
{
level = predecessor_level.Level.level;
round = Some predecessor_round;
branch;
payload_hash;
}
let expected_endorsement_for_block ctxt ~predecessor_level ~predecessor_round
: expected_endorsement =
match Consensus.endorsement_branch ctxt with
| None -> No_expected_branch_for_block_endorsement
| Some (branch, payload_hash) ->
let expected_features =
expected_endorsement_features
~predecessor_level
~predecessor_round
branch
payload_hash
in
Expected_endorsement {expected_features}
let expected_features_for_application ctxt fitness payload_hash
~predecessor_level ~predecessor_round ~predecessor_hash =
let expected_preendorsement =
match Fitness.locked_round fitness with
| None -> No_locked_round_for_block_validation_preendorsement
| Some locked_round ->
let expected_features =
{
level = (Level.current ctxt).level;
round = Some locked_round;
branch = predecessor_hash;
payload_hash;
}
in
let block_round = Some (Fitness.round fitness) in
Expected_preendorsement {expected_features; block_round}
in
let expected_endorsement =
expected_endorsement_for_block ctxt ~predecessor_level ~predecessor_round
in
{
expected_preendorsement;
expected_endorsement;
expected_grandparent_endorsement_for_partial_construction = None;
}
let expected_features_for_construction ctxt round payload_hash
~predecessor_level ~predecessor_round ~predecessor_hash =
let expected_preendorsement =
if Block_payload_hash.(payload_hash = zero) then
Fresh_proposal_for_construction_preendorsement
else
let expected_features =
{
level = (Level.current ctxt).level;
round = None;
branch = predecessor_hash;
payload_hash;
}
in
Expected_preendorsement {expected_features; block_round = Some round}
in
let expected_endorsement =
expected_endorsement_for_block ctxt ~predecessor_level ~predecessor_round
in
{
expected_preendorsement;
expected_endorsement;
expected_grandparent_endorsement_for_partial_construction = None;
}
let expected_features_for_partial_construction ctxt ~predecessor_level
~predecessor_round ~grandparent_round =
let expected_preendorsement, expected_endorsement =
match Consensus.endorsement_branch ctxt with
| None ->
let expected_level = predecessor_level.Level.level in
( No_expected_branch_for_partial_construction_preendorsement
{expected_level},
No_expected_branch_for_partial_construction_endorsement
{expected_level} )
| Some (branch, payload_hash) ->
let expected_features =
expected_endorsement_features
~predecessor_level
~predecessor_round
branch
payload_hash
in
( Expected_preendorsement {expected_features; block_round = None},
Expected_endorsement {expected_features} )
in
let expected_grandparent_endorsement_for_partial_construction =
match
( Consensus.grand_parent_branch ctxt,
Raw_level.pred predecessor_level.level )
with
| None, _ | _, None -> None
| Some (branch, payload_hash), Some level ->
Some {level; round = Some grandparent_round; branch; payload_hash}
in
{
expected_preendorsement;
expected_endorsement;
expected_grandparent_endorsement_for_partial_construction;
}
open Validate_errors.Consensus
let check_frozen_deposits_are_positive ctxt delegate_pkh =
let open Lwt_tzresult_syntax in
let* frozen_deposits = Delegate.frozen_deposits ctxt delegate_pkh in
fail_unless
Tez.(frozen_deposits.current_amount > zero)
(Zero_frozen_deposits delegate_pkh)
let check_level_equal kind expected_features
(consensus_content : consensus_content) =
let expected = expected_features.level in
let provided = consensus_content.level in
error_unless
(Raw_level.equal expected provided)
(if Raw_level.(expected > provided) then
Consensus_operation_for_old_level {kind; expected; provided}
else Consensus_operation_for_future_level {kind; expected; provided})
let check_round kind expected (consensus_content : consensus_content) =
let provided = consensus_content.round in
error_unless
(Round.equal expected provided)
(if Round.(expected > provided) then
Consensus_operation_for_old_round {kind; expected; provided}
else Consensus_operation_for_future_round {kind; expected; provided})
let check_round_equal kind expected_features
(consensus_content : consensus_content) =
match expected_features.round with
| Some expected -> check_round kind expected consensus_content
| None -> ok_unit
let check_branch_equal kind expected_features (operation : 'a operation) =
let expected = expected_features.branch in
let provided = operation.shell.branch in
error_unless
(Block_hash.equal expected provided)
(Wrong_consensus_operation_branch {kind; expected; provided})
let check_payload_hash_equal kind expected_features
(consensus_content : consensus_content) =
let expected = expected_features.payload_hash in
let provided = consensus_content.block_payload_hash in
error_unless
(Block_payload_hash.equal expected provided)
(Wrong_payload_hash_for_consensus_operation {kind; expected; provided})
let check_consensus_features kind (expected : expected_features)
(consensus_content : consensus_content) (operation : 'a operation) =
let open Result_syntax in
let* () = check_level_equal kind expected consensus_content in
let* () = check_round_equal kind expected consensus_content in
let* () = check_branch_equal kind expected operation in
check_payload_hash_equal kind expected consensus_content
let get_expected_preendorsements_features consensus_info consensus_content =
match consensus_info.all_expected_features.expected_preendorsement with
| Expected_preendorsement {expected_features; block_round} ->
ok (expected_features, block_round)
| No_locked_round_for_block_validation_preendorsement
| Fresh_proposal_for_construction_preendorsement ->
error Unexpected_preendorsement_in_block
| No_expected_branch_for_partial_construction_preendorsement
{expected_level} ->
error
(Consensus_operation_for_future_level
{
kind = Preendorsement;
expected = expected_level;
provided = consensus_content.Alpha_context.level;
})
| No_predecessor_info_cannot_validate_preendorsement ->
error Consensus_operation_not_allowed
let check_round_not_too_high ~block_round ~provided =
match block_round with
| None -> ok_unit
| Some block_round ->
error_unless
Round.(provided < block_round)
(Preendorsement_round_too_high {block_round; provided})
let get_delegate_details slot_map kind consensus_content =
Result.of_option
(Slot.Map.find consensus_content.slot slot_map)
~error:(trace_of_error (Wrong_slot_used_for_consensus_operation {kind}))
let check_preendorsement vi ~check_signature
(operation : Kind.preendorsement operation) =
let open Lwt_tzresult_syntax in
let (Single (Preendorsement consensus_content)) =
operation.protocol_data.contents
in
let kind = Preendorsement in
let*? expected_features, block_round =
get_expected_preendorsements_features vi.consensus_info consensus_content
in
let*? () =
check_round_not_too_high ~block_round ~provided:consensus_content.round
in
let*? () =
check_consensus_features
kind
expected_features
consensus_content
operation
in
let*? consensus_key, voting_power =
get_delegate_details
vi.consensus_info.preendorsement_slot_map
kind
consensus_content
in
let* () =
check_frozen_deposits_are_positive vi.ctxt consensus_key.delegate
in
let*? () =
if check_signature then
Operation.check_signature
consensus_key.consensus_pk
vi.chain_id
operation
else ok_unit
in
return voting_power
let check_preendorsement_conflict vs oph (op : Kind.preendorsement operation)
=
let (Single (Preendorsement consensus_content)) =
op.protocol_data.contents
in
match
Slot.Map.find_opt
consensus_content.slot
vs.consensus_state.preendorsements_seen
with
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
| None -> ok_unit
let wrap_preendorsement_conflict = function
| Ok () -> ok_unit
| Error conflict ->
error
Validate_errors.Consensus.(
Conflicting_consensus_operation {kind = Preendorsement; conflict})
let add_preendorsement vs oph (op : Kind.preendorsement operation) =
let (Single (Preendorsement consensus_content)) =
op.protocol_data.contents
in
let preendorsements_seen =
Slot.Map.add
consensus_content.slot
oph
vs.consensus_state.preendorsements_seen
in
{vs with consensus_state = {vs.consensus_state with preendorsements_seen}}
let may_update_locked_round_evidence block_state mode
(consensus_content : consensus_content) voting_power =
let locked_round_evidence =
match mode with
| Mempool -> None
| Application _ | Partial_validation _ | Construction _ -> (
match block_state.locked_round_evidence with
| None -> Some (consensus_content.round, voting_power)
| Some (_stored_round, evidences) ->
Some (consensus_content.round, evidences + voting_power))
in
{block_state with locked_round_evidence}
let remove_preendorsement vs (operation : Kind.preendorsement operation) =
let (Single (Preendorsement consensus_content)) =
operation.protocol_data.contents
in
let preendorsements_seen =
Slot.Map.remove
consensus_content.slot
vs.consensus_state.preendorsements_seen
in
{vs with consensus_state = {vs.consensus_state with preendorsements_seen}}
(** Validate an endorsement pointing to the grandparent block. This
function will only be called in [Partial_construction] mode. *)
let check_grandparent_endorsement vi ~check_signature expected operation
(consensus_content : consensus_content) =
let open Lwt_tzresult_syntax in
let kind = Grandparent_endorsement in
let level = Level.from_raw vi.ctxt consensus_content.level in
let* (_ctxt : t), consensus_key =
Stake_distribution.slot_owner vi.ctxt level consensus_content.slot
in
let*? () =
check_consensus_features kind expected consensus_content operation
in
let*? () =
if check_signature then
Operation.check_signature
consensus_key.consensus_pk
vi.chain_id
operation
else ok_unit
in
return_unit
let add_grandparent_endorsement vs oph (consensus_content : consensus_content)
=
{
vs with
consensus_state =
{
vs.consensus_state with
grandparent_endorsements_seen =
Slot.Map.add
consensus_content.slot
oph
vs.consensus_state.grandparent_endorsements_seen;
};
}
let check_grandparent_endorsement_conflict vs oph
(consensus_content : consensus_content) =
match
Slot.Map.find_opt
consensus_content.slot
vs.consensus_state.grandparent_endorsements_seen
with
| None -> ok_unit
| Some existing ->
Error (Operation_conflict {existing; new_operation = oph})
let remove_grandparent_endorsement vs (consensus_content : consensus_content)
=
let grandparent_endorsements_seen =
Slot.Map.remove
consensus_content.slot
vs.consensus_state.grandparent_endorsements_seen
in
{
vs with
consensus_state = {vs.consensus_state with grandparent_endorsements_seen};
}
let get_expected_endorsements_features consensus_info consensus_content =
match consensus_info.all_expected_features.expected_endorsement with
| Expected_endorsement {expected_features} -> ok expected_features
| No_expected_branch_for_block_endorsement ->
error Unexpected_endorsement_in_block
| No_expected_branch_for_partial_construction_endorsement {expected_level}
->
error
(Consensus_operation_for_future_level
{
kind = Endorsement;
expected = expected_level;
provided = consensus_content.Alpha_context.level;
})
| No_predecessor_info_cannot_validate_endorsement ->
error Consensus_operation_not_allowed
type endorsement_kind = Grandparent_endorsement | Normal_endorsement of int
(** Validate an endorsement pointing to the predecessor, aka a
"normal" endorsement. Only this kind of endorsement may be found
during block validation or construction. *)
let check_normal_endorsement vi ~check_signature
(operation : Kind.endorsement operation) =
let open Lwt_tzresult_syntax in
let (Single (Endorsement consensus_content)) =
operation.protocol_data.contents
in
let kind = Endorsement in
let*? expected_features =
get_expected_endorsements_features vi.consensus_info consensus_content
in
let*? () =
check_consensus_features
kind
expected_features
consensus_content
operation
in
let*? consensus_key, voting_power =
get_delegate_details
vi.consensus_info.endorsement_slot_map
kind
consensus_content
in
let* () =
check_frozen_deposits_are_positive vi.ctxt consensus_key.delegate
in
let*? () =
if check_signature then
Operation.check_signature
consensus_key.consensus_pk
vi.chain_id
operation
else ok_unit
in
return voting_power
let check_normal_endorsement_conflict vs oph
(consensus_content : consensus_content) =
match
Slot.Map.find_opt
consensus_content.slot
vs.consensus_state.endorsements_seen
with
| None -> ok_unit
| Some existing ->
Error (Operation_conflict {existing; new_operation = oph})
let add_normal_endorsement vs oph (consensus_content : consensus_content) =
{
vs with
consensus_state =
{
vs.consensus_state with
endorsements_seen =
Slot.Map.add
consensus_content.slot
oph
vs.consensus_state.endorsements_seen;
};
}
let remove_normal_endorsement vs (consensus_content : consensus_content) =
let endorsements_seen =
Slot.Map.remove
consensus_content.slot
vs.consensus_state.endorsements_seen
in
{vs with consensus_state = {vs.consensus_state with endorsements_seen}}
let check_endorsement vi ~check_signature
(operation : Kind.endorsement operation) =
let open Lwt_tzresult_syntax in
let (Single (Endorsement consensus_content)) =
operation.protocol_data.contents
in
match
vi.consensus_info.all_expected_features
.expected_grandparent_endorsement_for_partial_construction
with
| Some expected_grandparent_endorsement
when Raw_level.(
consensus_content.level = expected_grandparent_endorsement.level)
->
let* () =
check_grandparent_endorsement
vi
~check_signature
expected_grandparent_endorsement
operation
(consensus_content : consensus_content)
in
return Grandparent_endorsement
| _ ->
let* voting_power =
check_normal_endorsement vi ~check_signature operation
in
return (Normal_endorsement voting_power)
let is_normal_endorsement_assuming_valid vs
(consensus_content : consensus_content) =
Raw_level.equal vs.consensus_state.predecessor_level consensus_content.level
let check_endorsement_conflict vs oph (operation : Kind.endorsement operation)
=
let (Single (Endorsement consensus_content)) =
operation.protocol_data.contents
in
if is_normal_endorsement_assuming_valid vs consensus_content then
check_normal_endorsement_conflict vs oph consensus_content
else check_grandparent_endorsement_conflict vs oph consensus_content
let wrap_endorsement_conflict = function
| Ok () -> ok_unit
| Error conflict ->
error
Validate_errors.Consensus.(
Conflicting_consensus_operation {kind = Endorsement; conflict})
let add_endorsement vs oph (op : Kind.endorsement operation) endorsement_kind
=
let (Single (Endorsement consensus_content)) = op.protocol_data.contents in
match endorsement_kind with
| Grandparent_endorsement ->
add_grandparent_endorsement vs oph consensus_content
| Normal_endorsement _voting_power ->
add_normal_endorsement vs oph consensus_content
let may_update_endorsement_power block_state = function
| Grandparent_endorsement -> block_state
| Normal_endorsement voting_power ->
{
block_state with
endorsement_power = block_state.endorsement_power + voting_power;
}
let remove_endorsement vs (op : Kind.endorsement operation) =
let (Single (Endorsement consensus_content)) = op.protocol_data.contents in
if is_normal_endorsement_assuming_valid vs consensus_content then
remove_normal_endorsement vs consensus_content
else remove_grandparent_endorsement vs consensus_content
let check_dal_slot_availability vi
(operation : Kind.dal_slot_availability operation) =
let open Lwt_tzresult_syntax in
let (Single (Dal_slot_availability (_endorser, slot_availability))) =
operation.protocol_data.contents
in
let*? () =
Dal_apply.validate_data_availability vi.ctxt slot_availability
in
return_unit
let check_dal_slot_availability_conflict vs oph
(operation : Kind.dal_slot_availability operation) =
let (Single (Dal_slot_availability (endorser, _slot_availability))) =
operation.protocol_data.contents
in
match
Signature.Public_key_hash.Map.find_opt
endorser
vs.consensus_state.dal_slot_availability_seen
with
| None -> ok_unit
| Some existing ->
Error (Operation_conflict {existing; new_operation = oph})
let wrap_dal_slot_availability_conflict = function
| Ok () -> ok_unit
| Error conflict ->
error
Validate_errors.Consensus.(
Conflicting_consensus_operation
{kind = Dal_slot_availability; conflict})
let add_dal_slot_availability vs oph
(operation : Kind.dal_slot_availability operation) =
let (Single (Dal_slot_availability (endorser, _slot_availability))) =
operation.protocol_data.contents
in
{
vs with
consensus_state =
{
vs.consensus_state with
dal_slot_availability_seen =
Signature.Public_key_hash.Map.add
endorser
oph
vs.consensus_state.dal_slot_availability_seen;
};
}
let remove_dal_slot_availability vs
(operation : Kind.dal_slot_availability operation) =
let (Single (Dal_slot_availability (endorser, _slot_availability))) =
operation.protocol_data.contents
in
let dal_slot_availability_seen =
Signature.Public_key_hash.Map.remove
endorser
vs.consensus_state.dal_slot_availability_seen
in
{
vs with
consensus_state = {vs.consensus_state with dal_slot_availability_seen};
}
let check_construction_preendorsement_round_consistency vi block_state kind
(consensus_content : consensus_content) =
let open Result_syntax in
let* expected_features, _block_round =
get_expected_preendorsements_features vi.consensus_info consensus_content
in
match expected_features.round with
| Some _ ->
return_unit
| None -> (
match block_state.locked_round_evidence with
| None ->
return_unit
| Some (expected, _power) ->
check_round kind expected consensus_content)
let validate_preendorsement ~check_signature info operation_state block_state
oph (operation : Kind.preendorsement operation) =
let open Lwt_tzresult_syntax in
let (Single (Preendorsement consensus_content)) =
operation.protocol_data.contents
in
let* voting_power = check_preendorsement info ~check_signature operation in
let*? () =
check_construction_preendorsement_round_consistency
info
block_state
Preendorsement
consensus_content
in
let*? () =
check_preendorsement_conflict operation_state oph operation
|> wrap_preendorsement_conflict
in
let block_state =
may_update_locked_round_evidence
block_state
info.mode
consensus_content
voting_power
in
let operation_state = add_preendorsement operation_state oph operation in
return {info; operation_state; block_state}
let validate_endorsement ~check_signature info operation_state block_state oph
operation =
let open Lwt_tzresult_syntax in
let* kind = check_endorsement info ~check_signature operation in
let*? () =
check_endorsement_conflict operation_state oph operation
|> wrap_endorsement_conflict
in
let block_state = may_update_endorsement_power block_state kind in
let operation_state = add_endorsement operation_state oph operation kind in
return {info; operation_state; block_state}
end
(** {2 Validation of voting operations}
There are two kinds of voting operations:
- Proposals: A delegate submits a list of protocol amendment
proposals. This operation is only accepted during a Proposal period
(see above).
- Ballot: A delegate casts a vote for/against the current proposal
(or pass). This operation is only accepted during an Exploration
or Promotion period (see above). *)
module Voting = struct
open Validate_errors.Voting
(** Check that [record_proposals] below will not fail.
This function is designed to be exclusively called by
[validate_proposals] further down this file.
@return [Error Multiple_proposals] if [proposals] has more than
one element. *)
let check_testnet_dictator_proposals chain_id proposals =
assert (Chain_id.(chain_id <> Constants.mainnet_id)) ;
match proposals with
| [] | [_] ->
ok_unit
| _ :: _ :: _ -> error Testnet_dictator_multiple_proposals
let check_period_index ~expected period_index =
error_unless
Compare.Int32.(expected = period_index)
(Wrong_voting_period_index {expected; provided = period_index})
let check_proposals_source_is_registered ctxt source =
let open Lwt_tzresult_syntax in
let*! is_registered = Delegate.registered ctxt source in
fail_unless is_registered (Proposals_from_unregistered_delegate source)
(** Check that the list of proposals is not empty and does not contain
duplicates. *)
let check_proposal_list_sanity proposals =
let open Tzresult_syntax in
let* () =
match proposals with [] -> error Empty_proposals | _ :: _ -> ok_unit
in
let* (_ : Protocol_hash.Set.t) =
List.fold_left_e
(fun previous_elements proposal ->
let* () =
error_when
(Protocol_hash.Set.mem proposal previous_elements)
(Proposals_contain_duplicate {proposal})
in
return (Protocol_hash.Set.add proposal previous_elements))
Protocol_hash.Set.empty
proposals
in
return_unit
let check_period_kind_for_proposals current_period =
match current_period.Voting_period.kind with
| Proposal -> ok_unit
| (Exploration | Cooldown | Promotion | Adoption) as current ->
error (Wrong_voting_period_kind {current; expected = [Proposal]})
let check_in_listings ctxt source =
let open Lwt_tzresult_syntax in
let*! in_listings = Vote.in_listings ctxt source in
fail_unless in_listings Source_not_in_vote_listings
let check_count ~count_in_ctxt ~proposals_length =
assert (Compare.Int.(count_in_ctxt <= Constants.max_proposals_per_delegate)) ;
error_unless
Compare.Int.(
count_in_ctxt + proposals_length <= Constants.max_proposals_per_delegate)
(Too_many_proposals
{previous_count = count_in_ctxt; operation_count = proposals_length})
let check_already_proposed ctxt proposer proposals =
let open Lwt_tzresult_syntax in
List.iter_es
(fun proposal ->
let*! already_proposed = Vote.has_proposed ctxt proposer proposal in
fail_when already_proposed (Already_proposed {proposal}))
proposals
let check_period_kind_for_ballot current_period =
match current_period.Voting_period.kind with
| Exploration | Promotion -> ok_unit
| (Cooldown | Proposal | Adoption) as current ->
error
(Wrong_voting_period_kind
{current; expected = [Exploration; Promotion]})
let check_current_proposal ctxt op_proposal =
let open Lwt_tzresult_syntax in
let* current_proposal = Vote.get_current_proposal ctxt in
fail_unless
(Protocol_hash.equal op_proposal current_proposal)
(Ballot_for_wrong_proposal
{current = current_proposal; submitted = op_proposal})
let check_source_has_not_already_voted ctxt source =
let open Lwt_tzresult_syntax in
let*! has_ballot = Vote.has_recorded_ballot ctxt source in
fail_when has_ballot Already_submitted_a_ballot
let check_ballot_source_is_registered ctxt source =
let open Lwt_tzresult_syntax in
let*! is_registered = Delegate.registered ctxt source in
fail_unless is_registered (Ballot_from_unregistered_delegate source)
(** Check that a Proposals operation can be safely applied.
@return [Error Wrong_voting_period_index] if the operation's
period and the [context]'s current period do not have the same
index.
@return [Error Proposals_from_unregistered_delegate] if the
source is not a registered delegate.
@return [Error Empty_proposals] if the list of proposals is empty.
@return [Error Proposals_contain_duplicate] if the list of
proposals contains a duplicate element.
@return [Error Wrong_voting_period_kind] if the voting period is
not of the Proposal kind.
@return [Error Source_not_in_vote_listings] if the source is not
in the vote listings.
@return [Error Already_proposed] if one of the proposals has
already been proposed by the source.
@return [Error Too_many_proposals] if the total count of
proposals submitted by the source in previous blocks, in previously
validated operations of the current block/mempool, and in the
operation to validate, exceeds
{!Constants.max_proposals_per_delegate}.
@return [Error Conflict_already_proposed] if one of the
operation's proposals has already been submitted by the source in
the current block/mempool.
@return [Error Testnet_dictator_multiple_proposals] if the source
is a testnet dictator and the operation contains more than one
proposal.
@return [Error Operation.Missing_signature] or [Error
Operation.Invalid_signature] if the operation is unsigned or
incorrectly signed. *)
let check_proposals vi ~check_signature (operation : Kind.proposals operation)
=
let open Lwt_tzresult_syntax in
let (Single (Proposals {source; period; proposals})) =
operation.protocol_data.contents
in
let* current_period = Voting_period.get_current vi.ctxt in
let*? () = check_period_index ~expected:current_period.index period in
let* () =
if Amendment.is_testnet_dictator vi.ctxt vi.chain_id source then
let*? () = check_testnet_dictator_proposals vi.chain_id proposals in
return_unit
else
let* () = check_proposals_source_is_registered vi.ctxt source in
let*? () = check_proposal_list_sanity proposals in
let*? () = check_period_kind_for_proposals current_period in
let* () = check_in_listings vi.ctxt source in
let* count_in_ctxt = Vote.get_delegate_proposal_count vi.ctxt source in
let proposals_length = List.length proposals in
let*? () = check_count ~count_in_ctxt ~proposals_length in
check_already_proposed vi.ctxt source proposals
in
if check_signature then
let* public_key = Contract.get_manager_key vi.ctxt source in
Lwt.return (Operation.check_signature public_key vi.chain_id operation)
else return_unit
(** Check that a Proposals operation is compatible with previously
validated voting operations in the current block/mempool..
@return [Error Conflicting_proposals] if the current
block/mempool already contains a same source Proposals
operation. *)
let check_proposals_conflict vs oph (operation : Kind.proposals operation) =
let open Tzresult_syntax in
let (Single (Proposals {source; _})) = operation.protocol_data.contents in
match
Signature.Public_key_hash.Map.find_opt
source
vs.voting_state.proposals_seen
with
| None -> return_unit
| Some existing ->
Error (Operation_conflict {existing; new_operation = oph})
let wrap_proposals_conflict = function
| Ok () -> ok_unit
| Error conflict ->
error Validate_errors.Voting.(Conflicting_proposals conflict)
let add_proposals vs oph (operation : Kind.proposals operation) =
let (Single (Proposals {source; _})) = operation.protocol_data.contents in
let proposals_seen =
Signature.Public_key_hash.Map.add
source
oph
vs.voting_state.proposals_seen
in
let voting_state = {vs.voting_state with proposals_seen} in
{vs with voting_state}
let remove_proposals vs (operation : Kind.proposals operation) =
let (Single (Proposals {source; _})) = operation.protocol_data.contents in
let proposals_seen =
Signature.Public_key_hash.Map.remove source vs.voting_state.proposals_seen
in
{vs with voting_state = {vs.voting_state with proposals_seen}}
(** Check that a Ballot operation can be safely applied.
@return [Error Ballot_from_unregistered_delegate] if the
source is not a registered delegate.
@return [Error Conflicting_ballot] if the source has already
submitted a ballot in the current block/mempool.
@return [Error Wrong_voting_period_index] if the operation's
period and the [context]'s current period do not have the same
index.
@return [Error Wrong_voting_period_kind] if the voting period is
not of the Exploration or Promotion kind.
@return [Error Ballot_for_wrong_proposal] if the operation's
proposal is different from the [context]'s current proposal.
@return [Error Already_submitted_a_ballot] if the source has
already voted.
@return [Error Source_not_in_vote_listings] if the source is not
in the vote listings.
@return [Error Operation.Missing_signature] or [Error
Operation.Invalid_signature] if the operation is unsigned or
incorrectly signed. *)
let check_ballot vi ~check_signature (operation : Kind.ballot operation) =
let open Lwt_tzresult_syntax in
let (Single (Ballot {source; period; proposal; ballot = _})) =
operation.protocol_data.contents
in
let* () = check_ballot_source_is_registered vi.ctxt source in
let* current_period = Voting_period.get_current vi.ctxt in
let*? () = check_period_index ~expected:current_period.index period in
let*? () = check_period_kind_for_ballot current_period in
let* () = check_current_proposal vi.ctxt proposal in
let* () = check_source_has_not_already_voted vi.ctxt source in
let* () = check_in_listings vi.ctxt source in
when_ check_signature (fun () ->
let* public_key = Contract.get_manager_key vi.ctxt source in
Lwt.return (Operation.check_signature public_key vi.chain_id operation))
(** Check that a Ballot operation is compatible with previously
validated voting operations in the current block/mempool.
@return [Error Conflicting_ballot] if the [delegate] has already
submitted a ballot in the current block/mempool. *)
let check_ballot_conflict vs oph (operation : Kind.ballot operation) =
let (Single (Ballot {source; _})) = operation.protocol_data.contents in
match
Signature.Public_key_hash.Map.find_opt source vs.voting_state.ballots_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_ballot_conflict = function
| Ok () -> ok_unit
| Error conflict -> error (Conflicting_ballot conflict)
let add_ballot vs oph (operation : Kind.ballot operation) =
let (Single (Ballot {source; _})) = operation.protocol_data.contents in
let ballots_seen =
Signature.Public_key_hash.Map.add source oph vs.voting_state.ballots_seen
in
let voting_state = {vs.voting_state with ballots_seen} in
{vs with voting_state}
let remove_ballot vs (operation : Kind.ballot operation) =
let (Single (Ballot {source; _})) = operation.protocol_data.contents in
let ballots_seen =
Signature.Public_key_hash.Map.remove source vs.voting_state.ballots_seen
in
{vs with voting_state = {vs.voting_state with ballots_seen}}
end
module Anonymous = struct
open Validate_errors.Anonymous
let check_activate_account vi (operation : Kind.activate_account operation) =
let (Single (Activate_account {id = edpkh; activation_code})) =
operation.protocol_data.contents
in
let open Lwt_tzresult_syntax in
let blinded_pkh =
Blinded_public_key_hash.of_ed25519_pkh activation_code edpkh
in
let*! exists = Commitment.exists vi.ctxt blinded_pkh in
let*? () = error_unless exists (Invalid_activation {pkh = edpkh}) in
return_unit
let check_activate_account_conflict vs oph
(operation : Kind.activate_account operation) =
let (Single (Activate_account {id = edpkh; _})) =
operation.protocol_data.contents
in
match
Ed25519.Public_key_hash.Map.find_opt
edpkh
vs.anonymous_state.activation_pkhs_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_activate_account_conflict
(operation : Kind.activate_account operation) = function
| Ok () -> ok_unit
| Error conflict ->
let (Single (Activate_account {id = edpkh; _})) =
operation.protocol_data.contents
in
error (Conflicting_activation {edpkh; conflict})
let add_activate_account vs oph (operation : Kind.activate_account operation)
=
let (Single (Activate_account {id = edpkh; _})) =
operation.protocol_data.contents
in
let activation_pkhs_seen =
Ed25519.Public_key_hash.Map.add
edpkh
oph
vs.anonymous_state.activation_pkhs_seen
in
{vs with anonymous_state = {vs.anonymous_state with activation_pkhs_seen}}
let remove_activate_account vs (operation : Kind.activate_account operation) =
let (Single (Activate_account {id = edpkh; _})) =
operation.protocol_data.contents
in
let activation_pkhs_seen =
Ed25519.Public_key_hash.Map.remove
edpkh
vs.anonymous_state.activation_pkhs_seen
in
{vs with anonymous_state = {vs.anonymous_state with activation_pkhs_seen}}
let check_denunciation_age vi kind given_level =
let open Result_syntax in
let current_cycle = vi.current_level.cycle in
let given_cycle = (Level.from_raw vi.ctxt given_level).cycle in
let max_slashing_period = Constants.max_slashing_period vi.ctxt in
let last_slashable_cycle = Cycle.add given_cycle max_slashing_period in
let* () =
error_unless
Cycle.(given_cycle <= current_cycle)
(Too_early_denunciation
{kind; level = given_level; current = vi.current_level.level})
in
error_unless
Cycle.(last_slashable_cycle > current_cycle)
(Outdated_denunciation
{kind; level = given_level; last_cycle = last_slashable_cycle})
let check_double_endorsing_evidence (type kind)
~consensus_operation:denunciation_kind vi
(op1 : kind Kind.consensus Operation.t)
(op2 : kind Kind.consensus Operation.t) =
let open Lwt_tzresult_syntax in
match (op1.protocol_data.contents, op2.protocol_data.contents) with
| Single (Preendorsement e1), Single (Preendorsement e2)
| Single (Endorsement e1), Single (Endorsement e2) ->
let op1_hash = Operation.hash op1 in
let op2_hash = Operation.hash op2 in
let*? () =
error_unless
(Raw_level.(e1.level = e2.level)
&& Round.(e1.round = e2.round)
&& (not
(Block_payload_hash.equal
e1.block_payload_hash
e2.block_payload_hash))
&&
Operation_hash.(op1_hash < op2_hash))
(Invalid_denunciation denunciation_kind)
in
let level = Level.from_raw vi.ctxt e1.level in
let*? () = check_denunciation_age vi denunciation_kind level.level in
let* ctxt, consensus_key1 =
Stake_distribution.slot_owner vi.ctxt level e1.slot
in
let* ctxt, consensus_key2 =
Stake_distribution.slot_owner ctxt level e2.slot
in
let delegate1, delegate2 =
(consensus_key1.delegate, consensus_key2.delegate)
in
let*? () =
error_unless
(Signature.Public_key_hash.equal delegate1 delegate2)
(Inconsistent_denunciation
{kind = denunciation_kind; delegate1; delegate2})
in
let delegate_pk, delegate = (consensus_key1.consensus_pk, delegate1) in
let* already_slashed =
Delegate.already_slashed_for_double_endorsing ctxt delegate level
in
let*? () =
error_unless
(not already_slashed)
(Already_denounced {kind = denunciation_kind; delegate; level})
in
let*? () = Operation.check_signature delegate_pk vi.chain_id op1 in
let*? () = Operation.check_signature delegate_pk vi.chain_id op2 in
return_unit
let check_double_preendorsement_evidence vi
(operation : Kind.double_preendorsement_evidence operation) =
let (Single (Double_preendorsement_evidence {op1; op2})) =
operation.protocol_data.contents
in
check_double_endorsing_evidence
~consensus_operation:Preendorsement
vi
op1
op2
let check_double_endorsement_evidence vi
(operation : Kind.double_endorsement_evidence operation) =
let (Single (Double_endorsement_evidence {op1; op2})) =
operation.protocol_data.contents
in
check_double_endorsing_evidence ~consensus_operation:Endorsement vi op1 op2
let check_double_endorsing_evidence_conflict (type kind) vs oph
(op1 : kind Kind.consensus Operation.t) =
match op1.protocol_data.contents with
| Single (Preendorsement e1) | Single (Endorsement e1) -> (
match
Double_endorsing_evidence_map.find
(e1.level, e1.round, e1.slot)
vs.anonymous_state.double_endorsing_evidences_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph}))
let check_double_preendorsement_evidence_conflict vs oph
(operation : Kind.double_preendorsement_evidence operation) =
let (Single (Double_preendorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
check_double_endorsing_evidence_conflict vs oph op1
let check_double_endorsement_evidence_conflict vs oph
(operation : Kind.double_endorsement_evidence operation) =
let (Single (Double_endorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
check_double_endorsing_evidence_conflict vs oph op1
let wrap_denunciation_conflict kind = function
| Ok () -> ok_unit
| Error conflict -> error (Conflicting_denunciation {kind; conflict})
let add_double_endorsing_evidence (type kind) vs oph
(op1 : kind Kind.consensus Operation.t) =
match op1.protocol_data.contents with
| Single (Preendorsement e1) | Single (Endorsement e1) ->
let double_endorsing_evidences_seen =
Double_endorsing_evidence_map.add
(e1.level, e1.round, e1.slot)
oph
vs.anonymous_state.double_endorsing_evidences_seen
in
{
vs with
anonymous_state =
{vs.anonymous_state with double_endorsing_evidences_seen};
}
let add_double_endorsement_evidence vs oph
(operation : Kind.double_endorsement_evidence operation) =
let (Single (Double_endorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
add_double_endorsing_evidence vs oph op1
let add_double_preendorsement_evidence vs oph
(operation : Kind.double_preendorsement_evidence operation) =
let (Single (Double_preendorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
add_double_endorsing_evidence vs oph op1
let remove_double_endorsing_evidence (type kind) vs
(op : kind Kind.consensus Operation.t) =
match op.protocol_data.contents with
| Single (Endorsement e) | Single (Preendorsement e) ->
let double_endorsing_evidences_seen =
Double_endorsing_evidence_map.remove
(e.level, e.round, e.slot)
vs.anonymous_state.double_endorsing_evidences_seen
in
let anonymous_state =
{vs.anonymous_state with double_endorsing_evidences_seen}
in
{vs with anonymous_state}
let remove_double_preendorsement_evidence vs
(operation : Kind.double_preendorsement_evidence operation) =
let (Single (Double_preendorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
remove_double_endorsing_evidence vs op1
let remove_double_endorsement_evidence vs
(operation : Kind.double_endorsement_evidence operation) =
let (Single (Double_endorsement_evidence {op1; _})) =
operation.protocol_data.contents
in
remove_double_endorsing_evidence vs op1
let check_double_baking_evidence vi
(operation : Kind.double_baking_evidence operation) =
let open Lwt_tzresult_syntax in
let (Single (Double_baking_evidence {bh1; bh2})) =
operation.protocol_data.contents
in
let hash1 = Block_header.hash bh1 in
let hash2 = Block_header.hash bh2 in
let*? bh1_fitness = Fitness.from_raw bh1.shell.fitness in
let round1 = Fitness.round bh1_fitness in
let*? bh2_fitness = Fitness.from_raw bh2.shell.fitness in
let round2 = Fitness.round bh2_fitness in
let*? level1 = Raw_level.of_int32 bh1.shell.level in
let*? level2 = Raw_level.of_int32 bh2.shell.level in
let*? () =
error_unless
(Raw_level.(level1 = level2)
&& Round.(round1 = round2)
&&
Block_hash.(hash1 < hash2))
(Invalid_double_baking_evidence
{hash1; level1; round1; hash2; level2; round2})
in
let*? () = check_denunciation_age vi Block level1 in
let level = Level.from_raw vi.ctxt level1 in
let committee_size = Constants.consensus_committee_size vi.ctxt in
let*? slot1 = Round.to_slot round1 ~committee_size in
let* ctxt, consensus_key1 =
Stake_distribution.slot_owner vi.ctxt level slot1
in
let*? slot2 = Round.to_slot round2 ~committee_size in
let* ctxt, consensus_key2 =
Stake_distribution.slot_owner ctxt level slot2
in
let delegate1, delegate2 =
(consensus_key1.delegate, consensus_key2.delegate)
in
let*? () =
error_unless
Signature.Public_key_hash.(delegate1 = delegate2)
(Inconsistent_denunciation {kind = Block; delegate1; delegate2})
in
let delegate_pk, delegate = (consensus_key1.consensus_pk, delegate1) in
let* already_slashed =
Delegate.already_slashed_for_double_baking ctxt delegate level
in
let*? () =
error_unless
(not already_slashed)
(Already_denounced {kind = Block; delegate; level})
in
let*? () = Block_header.check_signature bh1 vi.chain_id delegate_pk in
let*? () = Block_header.check_signature bh2 vi.chain_id delegate_pk in
return_unit
let check_double_baking_evidence_conflict vs oph
(operation : Kind.double_baking_evidence operation) =
let (Single (Double_baking_evidence {bh1; _})) =
operation.protocol_data.contents
in
let bh1_fitness =
Fitness.from_raw bh1.shell.fitness |> function
| Ok f -> f
| Error _ ->
assert false
in
let round = Fitness.round bh1_fitness in
let level = Fitness.level bh1_fitness in
match
Double_baking_evidence_map.find
(level, round)
vs.anonymous_state.double_baking_evidences_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let add_double_baking_evidence vs oph
(operation : Kind.double_baking_evidence operation) =
let (Single (Double_baking_evidence {bh1; _})) =
operation.protocol_data.contents
in
let bh1_fitness =
Fitness.from_raw bh1.shell.fitness |> function
| Ok f -> f
| Error _ -> assert false
in
let round = Fitness.round bh1_fitness in
let level = Fitness.level bh1_fitness in
let double_baking_evidences_seen =
Double_baking_evidence_map.add
(level, round)
oph
vs.anonymous_state.double_baking_evidences_seen
in
{
vs with
anonymous_state = {vs.anonymous_state with double_baking_evidences_seen};
}
let remove_double_baking_evidence vs
(operation : Kind.double_baking_evidence operation) =
let (Single (Double_baking_evidence {bh1; _})) =
operation.protocol_data.contents
in
let bh1_fitness, level =
match
(Fitness.from_raw bh1.shell.fitness, Raw_level.of_int32 bh1.shell.level)
with
| Ok v, Ok v' -> (v, v')
| _ ->
assert false
in
let round = Fitness.round bh1_fitness in
let double_baking_evidences_seen =
Double_baking_evidence_map.remove
(level, round)
vs.anonymous_state.double_baking_evidences_seen
in
let anonymous_state =
{vs.anonymous_state with double_baking_evidences_seen}
in
{vs with anonymous_state}
let check_drain_delegate info ~check_signature
(operation : Kind.drain_delegate Operation.t) =
let open Lwt_tzresult_syntax in
let (Single (Drain_delegate {delegate; destination; consensus_key})) =
operation.protocol_data.contents
in
let*! is_registered = Delegate.registered info.ctxt delegate in
let* () =
fail_unless
is_registered
(Drain_delegate_on_unregistered_delegate delegate)
in
let* active_pk = Delegate.Consensus_key.active_pubkey info.ctxt delegate in
let* () =
fail_unless
(Signature.Public_key_hash.equal active_pk.consensus_pkh consensus_key)
(Invalid_drain_delegate_inactive_key
{
delegate;
consensus_key;
active_consensus_key = active_pk.consensus_pkh;
})
in
let* () =
fail_when
(Signature.Public_key_hash.equal active_pk.consensus_pkh delegate)
(Invalid_drain_delegate_no_consensus_key delegate)
in
let* () =
fail_when
(Signature.Public_key_hash.equal destination delegate)
(Invalid_drain_delegate_noop delegate)
in
let*! is_destination_allocated =
Contract.allocated info.ctxt (Contract.Implicit destination)
in
let* balance =
Contract.get_balance info.ctxt (Contract.Implicit delegate)
in
let*? origination_burn =
if is_destination_allocated then ok Tez.zero
else
let cost_per_byte = Constants.cost_per_byte info.ctxt in
let origination_size = Constants.origination_size info.ctxt in
Tez.(cost_per_byte *? Int64.of_int origination_size)
in
let* drain_fees =
let*? one_percent = Tez.(balance /? 100L) in
return Tez.(max one one_percent)
in
let*? min_amount = Tez.(origination_burn +? drain_fees) in
let* () =
fail_when
Tez.(balance < min_amount)
(Invalid_drain_delegate_insufficient_funds_for_burn_or_fees
{delegate; destination; min_amount})
in
let*? () =
if check_signature then
Operation.check_signature active_pk.consensus_pk info.chain_id operation
else ok_unit
in
return_unit
let check_drain_delegate_conflict state oph
(operation : Kind.drain_delegate Operation.t) =
let (Single (Drain_delegate {delegate; _})) =
operation.protocol_data.contents
in
match
Signature.Public_key_hash.Map.find_opt
delegate
state.manager_state.managers_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_drain_delegate_conflict (operation : Kind.drain_delegate Operation.t)
=
let (Single (Drain_delegate {delegate; _})) =
operation.protocol_data.contents
in
function
| Ok () -> ok_unit
| Error conflict -> error (Conflicting_drain_delegate {delegate; conflict})
let add_drain_delegate state oph (operation : Kind.drain_delegate Operation.t)
=
let (Single (Drain_delegate {delegate; _})) =
operation.protocol_data.contents
in
let managers_seen =
Signature.Public_key_hash.Map.add
delegate
oph
state.manager_state.managers_seen
in
{state with manager_state = {managers_seen}}
let remove_drain_delegate state (operation : Kind.drain_delegate Operation.t)
=
let (Single (Drain_delegate {delegate; _})) =
operation.protocol_data.contents
in
let managers_seen =
Signature.Public_key_hash.Map.remove
delegate
state.manager_state.managers_seen
in
{state with manager_state = {managers_seen}}
let check_seed_nonce_revelation vi
(operation : Kind.seed_nonce_revelation operation) =
let open Lwt_tzresult_syntax in
let (Single (Seed_nonce_revelation {level = commitment_raw_level; nonce})) =
operation.protocol_data.contents
in
let commitment_level = Level.from_raw vi.ctxt commitment_raw_level in
let* () = Nonce.check_unrevealed vi.ctxt commitment_level nonce in
return_unit
let check_seed_nonce_revelation_conflict vs oph
(operation : Kind.seed_nonce_revelation operation) =
let (Single (Seed_nonce_revelation {level = commitment_raw_level; _})) =
operation.protocol_data.contents
in
match
Raw_level.Map.find_opt
commitment_raw_level
vs.anonymous_state.seed_nonce_levels_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_seed_nonce_revelation_conflict = function
| Ok () -> ok_unit
| Error conflict -> error (Conflicting_nonce_revelation conflict)
let add_seed_nonce_revelation vs oph
(operation : Kind.seed_nonce_revelation operation) =
let (Single (Seed_nonce_revelation {level = commitment_raw_level; _})) =
operation.protocol_data.contents
in
let seed_nonce_levels_seen =
Raw_level.Map.add
commitment_raw_level
oph
vs.anonymous_state.seed_nonce_levels_seen
in
let anonymous_state = {vs.anonymous_state with seed_nonce_levels_seen} in
{vs with anonymous_state}
let remove_seed_nonce_revelation vs
(operation : Kind.seed_nonce_revelation operation) =
let (Single (Seed_nonce_revelation {level = commitment_raw_level; _})) =
operation.protocol_data.contents
in
let seed_nonce_levels_seen =
Raw_level.Map.remove
commitment_raw_level
vs.anonymous_state.seed_nonce_levels_seen
in
let anonymous_state = {vs.anonymous_state with seed_nonce_levels_seen} in
{vs with anonymous_state}
let check_vdf_revelation vi (operation : Kind.vdf_revelation operation) =
let open Lwt_tzresult_syntax in
let (Single (Vdf_revelation {solution})) =
operation.protocol_data.contents
in
let* () = Seed.check_vdf vi.ctxt solution in
return_unit
let check_vdf_revelation_conflict vs oph =
match vs.anonymous_state.vdf_solution_seen with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_vdf_revelation_conflict = function
| Ok () -> ok_unit
| Error conflict -> error (Conflicting_vdf_revelation conflict)
let add_vdf_revelation vs oph =
{
vs with
anonymous_state = {vs.anonymous_state with vdf_solution_seen = Some oph};
}
let remove_vdf_revelation vs =
let anonymous_state = {vs.anonymous_state with vdf_solution_seen = None} in
{vs with anonymous_state}
end
module Manager = struct
open Validate_errors.Manager
(** State that simulates changes from individual operations that have
an effect on future operations inside the same batch. *)
type batch_state = {
balance : Tez.t;
(** Remaining balance in the contract, used to simulate the
payment of fees by each operation in the batch. *)
is_allocated : bool;
(** Track whether the contract is still allocated. Indeed,
previous operations' fee payment may empty the contract and
this may deallocate the contract.
TODO: https://gitlab.com/tezos/tezos/-/issues/3209 Change
empty account cleanup mechanism to avoid the need for this
field. *)
total_gas_used : Gas.Arith.fp;
}
(** Check a few simple properties of the batch, and return the
initial {!batch_state} and the contract public key.
Invariants checked:
- All operations in a batch have the same source.
- The source's contract is allocated.
- The counters in a batch are successive, and the first of them
is the source's next expected counter.
- A batch contains at most one Reveal operation that must occur
in first position.
- The source's public key has been revealed (either before the
considered batch, or during its first operation).
Note that currently, the [op] batch contains only one signature,
so all operations in the batch are required to originate from the
same manager. This may change in the future, in order to allow
several managers to group-sign a sequence of operations. *)
let check_sanity_and_find_public_key vi
(contents_list : _ Kind.manager contents_list) =
let open Result_syntax in
let check_source_and_counter ~expected_source ~source ~previous_counter
~counter =
let* () =
error_unless
(Signature.Public_key_hash.equal expected_source source)
Inconsistent_sources
in
error_unless
Compare.Z.(Z.succ previous_counter = counter)
Inconsistent_counters
in
let rec check_batch_tail_sanity :
type kind.
public_key_hash ->
counter ->
kind Kind.manager contents_list ->
unit tzresult =
fun expected_source previous_counter -> function
| Single (Manager_operation {operation = Reveal _key; _}) ->
error Incorrect_reveal_position
| Cons (Manager_operation {operation = Reveal _key; _}, _res) ->
error Incorrect_reveal_position
| Single (Manager_operation {source; counter; _}) ->
check_source_and_counter
~expected_source
~source
~previous_counter
~counter
| Cons (Manager_operation {source; counter; _}, rest) ->
let open Result_syntax in
let* () =
check_source_and_counter
~expected_source
~source
~previous_counter
~counter
in
check_batch_tail_sanity source counter rest
in
let check_batch :
type kind.
kind Kind.manager contents_list ->
(public_key_hash * public_key option * counter) tzresult =
fun contents_list ->
match contents_list with
| Single (Manager_operation {source; operation = Reveal key; counter; _})
->
ok (source, Some key, counter)
| Single (Manager_operation {source; counter; _}) ->
ok (source, None, counter)
| Cons
(Manager_operation {source; operation = Reveal key; counter; _}, rest)
->
check_batch_tail_sanity source counter rest >>? fun () ->
ok (source, Some key, counter)
| Cons (Manager_operation {source; counter; _}, rest) ->
check_batch_tail_sanity source counter rest >>? fun () ->
ok (source, None, counter)
in
let open Lwt_tzresult_syntax in
let*? source, revealed_key, first_counter = check_batch contents_list in
let* balance = Contract.check_allocated_and_get_balance vi.ctxt source in
let* () = Contract.check_counter_increment vi.ctxt source first_counter in
let* pk =
match revealed_key with
| Some pk -> return pk
| None -> Contract.get_manager_key vi.ctxt source
in
let initial_batch_state =
{
balance;
is_allocated = true;
total_gas_used = Gas.Arith.zero;
}
in
return (initial_batch_state, pk)
let check_gas_limit info ~gas_limit =
Gas.check_gas_limit
~hard_gas_limit_per_operation:
info.manager_info.hard_gas_limit_per_operation
~gas_limit
let check_storage_limit vi storage_limit =
error_unless
Compare.Z.(
storage_limit <= vi.manager_info.hard_storage_limit_per_operation
&& storage_limit >= Z.zero)
Fees.Storage_limit_too_high
let assert_tx_rollup_feature_enabled vi =
let open Result_syntax in
let* sunset =
Raw_level.of_int32 (Constants.tx_rollup_sunset_level vi.ctxt)
in
error_unless
(Constants.tx_rollup_enable vi.ctxt
&& Raw_level.(vi.current_level.level < sunset))
Tx_rollup_feature_disabled
let assert_sc_rollup_feature_enabled vi =
error_unless (Constants.sc_rollup_enable vi.ctxt) Sc_rollup_feature_disabled
let assert_dal_feature_enabled vi =
error_unless (Constants.dal_enable vi.ctxt) Dal_errors.Dal_feature_disabled
let assert_not_zero_messages messages =
match messages with
| [] -> error Sc_rollup_errors.Sc_rollup_add_zero_messages
| _ -> ok_unit
let assert_zk_rollup_feature_enabled vi =
error_unless (Constants.zk_rollup_enable vi.ctxt) Zk_rollup_feature_disabled
let consume_decoding_gas remaining_gas lexpr =
record_trace Gas_quota_exceeded_init_deserialize
@@
Script.consume_decoding_gas remaining_gas lexpr
let validate_tx_rollup_submit_batch vi remaining_gas content =
let open Result_syntax in
let* () = assert_tx_rollup_feature_enabled vi in
let _message, message_size = Tx_rollup_message.make_batch content in
let* cost = Tx_rollup_gas.hash_cost message_size in
let size_limit = Constants.tx_rollup_hard_size_limit_per_message vi.ctxt in
let* (_ : Gas.Arith.fp) = Gas.consume_from remaining_gas cost in
error_unless
Compare.Int.(message_size <= size_limit)
Tx_rollup_errors.Message_size_exceeds_limit
let validate_tx_rollup_dispatch_tickets vi remaining_gas operation =
let open Result_syntax in
let* () = assert_tx_rollup_feature_enabled vi in
let (Tx_rollup_dispatch_tickets {tickets_info; message_result_path; _}) =
operation
in
let Constants.Parametric.
{max_messages_per_inbox; max_withdrawals_per_batch; _} =
Constants.tx_rollup vi.ctxt
in
let* () =
Tx_rollup_errors.check_path_depth
`Commitment
(Tx_rollup_commitment.Merkle.path_depth message_result_path)
~count_limit:max_messages_per_inbox
in
let* () =
error_when
Compare.List_length_with.(tickets_info = 0)
Tx_rollup_errors.No_withdrawals_to_dispatch
in
let* () =
error_when
Compare.List_length_with.(tickets_info > max_withdrawals_per_batch)
Tx_rollup_errors.Too_many_withdrawals
in
let* (_ : Gas.Arith.fp) =
record_trace
Gas_quota_exceeded_init_deserialize
(List.fold_left_e
(fun remaining_gas Tx_rollup_reveal.{contents; ty; _} ->
let* remaining_gas =
Script.consume_decoding_gas remaining_gas contents
in
Script.consume_decoding_gas remaining_gas ty)
remaining_gas
tickets_info)
in
return_unit
let validate_tx_rollup_rejection vi operation =
let open Result_syntax in
let* () = assert_tx_rollup_feature_enabled vi in
let (Tx_rollup_rejection
{message_path; message_result_path; previous_message_result_path; _})
=
operation
in
let Constants.Parametric.{max_messages_per_inbox; _} =
Constants.tx_rollup vi.ctxt
in
let* () =
Tx_rollup_errors.check_path_depth
`Inbox
(Tx_rollup_inbox.Merkle.path_depth message_path)
~count_limit:max_messages_per_inbox
in
let* () =
Tx_rollup_errors.check_path_depth
`Commitment
(Tx_rollup_commitment.Merkle.path_depth message_result_path)
~count_limit:max_messages_per_inbox
in
Tx_rollup_errors.check_path_depth
`Commitment
(Tx_rollup_commitment.Merkle.path_depth previous_message_result_path)
~count_limit:max_messages_per_inbox
let may_trace_gas_limit_too_high info =
match info.mode with
| Application _ | Partial_validation _ | Construction _ -> fun x -> x
| Mempool ->
record_trace Gas.Gas_limit_too_high
let check_contents (type kind) vi batch_state
(contents : kind Kind.manager contents) remaining_block_gas =
let open Lwt_tzresult_syntax in
let (Manager_operation
{source; fee; counter = _; operation; gas_limit; storage_limit}) =
contents
in
let*? () = check_gas_limit vi ~gas_limit in
let total_gas_used =
Gas.Arith.(add batch_state.total_gas_used (fp gas_limit))
in
let*? () =
may_trace_gas_limit_too_high vi
@@ error_unless
Gas.Arith.(fp total_gas_used <= remaining_block_gas)
Gas.Block_quota_exceeded
in
let*? remaining_gas =
record_trace
Insufficient_gas_for_manager
(Gas.consume_from
(Gas.Arith.fp gas_limit)
Michelson_v1_gas.Cost_of.manager_operation)
in
let*? () = check_storage_limit vi storage_limit in
let*? () =
error_unless
batch_state.is_allocated
(Contract_storage.Empty_implicit_contract source)
in
let*? () =
let open Result_syntax in
match operation with
| Reveal pk -> Contract.check_public_key pk source
| Transaction {parameters; _} ->
let* (_ : Gas.Arith.fp) =
consume_decoding_gas remaining_gas parameters
in
return_unit
| Origination {script; _} ->
let* remaining_gas = consume_decoding_gas remaining_gas script.code in
let* (_ : Gas.Arith.fp) =
consume_decoding_gas remaining_gas script.storage
in
return_unit
| Register_global_constant {value} ->
let* (_ : Gas.Arith.fp) = consume_decoding_gas remaining_gas value in
return_unit
| Delegation _ | Set_deposits_limit _ | Increase_paid_storage _
| Update_consensus_key _ ->
return_unit
| Tx_rollup_origination -> assert_tx_rollup_feature_enabled vi
| Tx_rollup_submit_batch {content; _} ->
validate_tx_rollup_submit_batch vi remaining_gas content
| Tx_rollup_commit _ | Tx_rollup_return_bond _
| Tx_rollup_finalize_commitment _ | Tx_rollup_remove_commitment _ ->
assert_tx_rollup_feature_enabled vi
| Transfer_ticket {contents; ty; _} ->
let* () = assert_tx_rollup_feature_enabled vi in
let* remaining_gas = consume_decoding_gas remaining_gas contents in
let* (_ : Gas.Arith.fp) = consume_decoding_gas remaining_gas ty in
return_unit
| Tx_rollup_dispatch_tickets _ ->
validate_tx_rollup_dispatch_tickets vi remaining_gas operation
| Tx_rollup_rejection _ -> validate_tx_rollup_rejection vi operation
| Sc_rollup_originate _ | Sc_rollup_cement _ | Sc_rollup_publish _
| Sc_rollup_refute _ | Sc_rollup_timeout _
| Sc_rollup_execute_outbox_message _ ->
assert_sc_rollup_feature_enabled vi
| Sc_rollup_add_messages {messages; _} ->
let* () = assert_sc_rollup_feature_enabled vi in
assert_not_zero_messages messages
| Sc_rollup_recover_bond _ ->
assert_sc_rollup_feature_enabled vi
| Sc_rollup_dal_slot_subscribe _ ->
let* () = assert_sc_rollup_feature_enabled vi in
assert_dal_feature_enabled vi
| Dal_publish_slot_header {slot} ->
Dal_apply.validate_publish_slot_header vi.ctxt slot
| Zk_rollup_origination _ | Zk_rollup_publish _ ->
assert_zk_rollup_feature_enabled vi
in
let* balance, is_allocated =
Contract.simulate_spending
vi.ctxt
~balance:batch_state.balance
~amount:fee
source
in
return {total_gas_used; balance; is_allocated}
(** This would be [fold_left_es (check_contents vi) batch_state
contents_list] if [contents_list] were an ordinary [list]. *)
let rec check_contents_list :
type kind.
info ->
batch_state ->
kind Kind.manager contents_list ->
Gas.Arith.fp ->
Gas.Arith.fp tzresult Lwt.t =
fun vi batch_state contents_list remaining_gas ->
let open Lwt_tzresult_syntax in
match contents_list with
| Single contents ->
let* batch_state =
check_contents vi batch_state contents remaining_gas
in
return batch_state.total_gas_used
| Cons (contents, tail) ->
let* batch_state =
check_contents vi batch_state contents remaining_gas
in
check_contents_list vi batch_state tail remaining_gas
let check_manager_operation vi ~check_signature
(operation : _ Kind.manager operation) remaining_block_gas =
let open Lwt_tzresult_syntax in
let contents_list = operation.protocol_data.contents in
let* batch_state, source_pk =
check_sanity_and_find_public_key vi contents_list
in
let* gas_used =
check_contents_list vi batch_state contents_list remaining_block_gas
in
let*? () =
if check_signature then
Operation.check_signature source_pk vi.chain_id operation
else ok_unit
in
return gas_used
let check_manager_operation_conflict (type kind) vs oph
(operation : kind Kind.manager operation) =
let source =
match operation.protocol_data.contents with
| Single (Manager_operation {source; _})
| Cons (Manager_operation {source; _}, _) ->
source
in
match
Signature.Public_key_hash.Map.find_opt
source
vs.manager_state.managers_seen
with
| None -> ok_unit
| Some oph' ->
Error (Operation_conflict {existing = oph'; new_operation = oph})
let wrap_check_manager_operation_conflict (type kind)
(operation : kind Kind.manager operation) =
let source =
match operation.protocol_data.contents with
| Single (Manager_operation {source; _})
| Cons (Manager_operation {source; _}, _) ->
source
in
function
| Ok () -> ok_unit
| Error conflict -> error (Manager_restriction {source; conflict})
let add_manager_operation (type kind) vs oph
(operation : kind Kind.manager operation) =
let source =
match operation.protocol_data.contents with
| Single (Manager_operation {source; _})
| Cons (Manager_operation {source; _}, _) ->
source
in
let managers_seen =
Signature.Public_key_hash.Map.add
source
oph
vs.manager_state.managers_seen
in
{vs with manager_state = {managers_seen}}
let may_update_remaining_gas_used mode (block_state : block_state)
operation_gas_used =
match mode with
| Application _ | Partial_validation _ | Construction _ ->
let remaining_block_gas =
Gas.Arith.(sub block_state.remaining_block_gas operation_gas_used)
in
{block_state with remaining_block_gas}
| Mempool -> block_state
let remove_manager_operation (type kind) vs
(operation : kind Kind.manager operation) =
let source =
match operation.protocol_data.contents with
| Single (Manager_operation {source; _})
| Cons (Manager_operation {source; _}, _) ->
source
in
let managers_seen =
Signature.Public_key_hash.Map.remove source vs.manager_state.managers_seen
in
{vs with manager_state = {managers_seen}}
let validate_manager_operation ~check_signature info operation_state
block_state oph operation =
let open Lwt_tzresult_syntax in
let* gas_used =
check_manager_operation
info
~check_signature
operation
block_state.remaining_block_gas
in
let*? () =
check_manager_operation_conflict operation_state oph operation
|> wrap_check_manager_operation_conflict operation
in
let operation_state = add_manager_operation operation_state oph operation in
let block_state =
may_update_remaining_gas_used info.mode block_state gas_used
in
return {info; operation_state; block_state}
end
let init_validation_state ctxt mode chain_id all_expected_consensus_features
~predecessor_level =
let info = init_info ctxt mode chain_id all_expected_consensus_features in
let operation_state = init_operation_conflict_state ~predecessor_level in
let block_state = init_block_state info in
{info; operation_state; block_state}
let begin_any_application ctxt chain_id ~predecessor_level
~predecessor_timestamp ( : Block_header.t) fitness ~is_partial =
let open Lwt_tzresult_syntax in
let predecessor_round = Fitness.predecessor_round fitness in
let round = Fitness.round fitness in
let current_level = Level.current ctxt in
let* ctxt, _slot, block_producer =
Stake_distribution.baking_rights_owner ctxt current_level ~round
in
let*? () =
Block_header.begin_validate_block_header
~block_header
~chain_id
~predecessor_timestamp
~predecessor_round
~fitness
~timestamp:block_header.shell.timestamp
~delegate_pk:block_producer.consensus_pk
~round_durations:(Constants.round_durations ctxt)
~proof_of_work_threshold:(Constants.proof_of_work_threshold ctxt)
~expected_commitment:current_level.expected_commitment
in
let* () =
Consensus.check_frozen_deposits_are_positive ctxt block_producer.delegate
in
let* ctxt, _slot, payload_producer =
Stake_distribution.baking_rights_owner
ctxt
current_level
~round:block_header.protocol_data.contents.payload_round
in
let payload_hash = block_header.protocol_data.contents.payload_hash in
let predecessor_hash = block_header.shell.predecessor in
let application_info =
{
fitness;
block_producer;
payload_producer;
predecessor_hash;
block_data_contents = block_header.protocol_data.contents;
}
in
let mode =
if is_partial then Partial_validation application_info
else Application application_info
in
let all_expected_consensus_features =
Consensus.expected_features_for_application
ctxt
fitness
payload_hash
~predecessor_level
~predecessor_round
~predecessor_hash
in
let predecessor_level = predecessor_level.level in
return
(init_validation_state
ctxt
mode
chain_id
all_expected_consensus_features
~predecessor_level)
let begin_partial_validation ctxt chain_id ~predecessor_level
~predecessor_timestamp fitness =
begin_any_application
ctxt
chain_id
~predecessor_level
~predecessor_timestamp
block_header
fitness
~is_partial:true
let begin_application ctxt chain_id ~predecessor_level ~predecessor_timestamp
fitness =
begin_any_application
ctxt
chain_id
~predecessor_level
~predecessor_timestamp
block_header
fitness
~is_partial:false
let begin_full_construction ctxt chain_id ~predecessor_level ~predecessor_round
~predecessor_timestamp ~predecessor_hash round
( : Block_header.contents) =
let open Lwt_tzresult_syntax in
let round_durations = Constants.round_durations ctxt in
let timestamp = Timestamp.current ctxt in
let*? () =
Block_header.check_timestamp
round_durations
~timestamp
~round
~predecessor_timestamp
~predecessor_round
in
let current_level = Level.current ctxt in
let* ctxt, _slot, block_producer =
Stake_distribution.baking_rights_owner ctxt current_level ~round
in
let* () =
Consensus.check_frozen_deposits_are_positive ctxt block_producer.delegate
in
let* ctxt, _slot, payload_producer =
Stake_distribution.baking_rights_owner
ctxt
current_level
~round:header_contents.payload_round
in
let all_expected_consensus_features =
Consensus.expected_features_for_construction
ctxt
round
header_contents.payload_hash
~predecessor_level
~predecessor_round
~predecessor_hash
in
let predecessor_level = predecessor_level.level in
let validation_state =
init_validation_state
ctxt
(Construction
{
predecessor_round;
predecessor_hash;
round;
block_data_contents = header_contents;
block_producer;
payload_producer;
})
chain_id
all_expected_consensus_features
~predecessor_level
in
return validation_state
let begin_partial_construction ctxt chain_id ~predecessor_level
~predecessor_round ~grandparent_round =
let all_expected_consensus_features =
Consensus.expected_features_for_partial_construction
ctxt
~predecessor_level
~predecessor_round
~grandparent_round
in
let predecessor_level = predecessor_level.level in
let validation_state =
init_validation_state
ctxt
Mempool
chain_id
all_expected_consensus_features
~predecessor_level
in
validation_state
let begin_no_predecessor_info ctxt chain_id =
let all_expected_consensus_features =
{
expected_preendorsement =
No_predecessor_info_cannot_validate_preendorsement;
expected_endorsement = No_predecessor_info_cannot_validate_endorsement;
expected_grandparent_endorsement_for_partial_construction = None;
}
in
let current_level = Level.current ctxt in
let predecessor_level =
match Raw_level.pred current_level.level with
| None -> current_level.level
| Some level -> level
in
init_validation_state
ctxt
Mempool
chain_id
all_expected_consensus_features
~predecessor_level
let check_operation ?(check_signature = true) info (type kind)
(operation : kind operation) : unit tzresult Lwt.t =
let open Lwt_tzresult_syntax in
match operation.protocol_data.contents with
| Single (Preendorsement _) ->
let* (_voting_power : int) =
Consensus.check_preendorsement info ~check_signature operation
in
return_unit
| Single (Endorsement _) ->
let* (_kind : Consensus.endorsement_kind) =
Consensus.check_endorsement info ~check_signature operation
in
return_unit
| Single (Dal_slot_availability _) ->
Consensus.check_dal_slot_availability info operation
| Single (Proposals _) ->
Voting.check_proposals info ~check_signature operation
| Single (Ballot _) -> Voting.check_ballot info ~check_signature operation
| Single (Activate_account _) ->
Anonymous.check_activate_account info operation
| Single (Double_preendorsement_evidence _) ->
Anonymous.check_double_preendorsement_evidence info operation
| Single (Double_endorsement_evidence _) ->
Anonymous.check_double_endorsement_evidence info operation
| Single (Double_baking_evidence _) ->
Anonymous.check_double_baking_evidence info operation
| Single (Drain_delegate _) ->
Anonymous.check_drain_delegate info ~check_signature operation
| Single (Seed_nonce_revelation _) ->
Anonymous.check_seed_nonce_revelation info operation
| Single (Vdf_revelation _) -> Anonymous.check_vdf_revelation info operation
| Single (Manager_operation _) ->
let remaining_gas =
Gas.Arith.fp (Constants.hard_gas_limit_per_block info.ctxt)
in
let* (_remaining_gas : Gas.Arith.fp) =
Manager.check_manager_operation
info
~check_signature
operation
remaining_gas
in
return_unit
| Cons (Manager_operation _, _) ->
let remaining_gas =
Gas.Arith.fp (Constants.hard_gas_limit_per_block info.ctxt)
in
let* (_remaining_gas : Gas.Arith.fp) =
Manager.check_manager_operation
info
~check_signature
operation
remaining_gas
in
return_unit
| Single (Failing_noop _) -> fail Validate_errors.Failing_noop_error
let check_operation_conflict (type kind) operation_conflict_state oph
(operation : kind operation) =
match operation.protocol_data.contents with
| Single (Preendorsement _) ->
Consensus.check_preendorsement_conflict
operation_conflict_state
oph
operation
| Single (Endorsement _) ->
Consensus.check_endorsement_conflict
operation_conflict_state
oph
operation
| Single (Dal_slot_availability _) ->
Consensus.check_dal_slot_availability_conflict
operation_conflict_state
oph
operation
| Single (Proposals _) ->
Voting.check_proposals_conflict operation_conflict_state oph operation
| Single (Ballot _) ->
Voting.check_ballot_conflict operation_conflict_state oph operation
| Single (Activate_account _) ->
Anonymous.check_activate_account_conflict
operation_conflict_state
oph
operation
| Single (Double_preendorsement_evidence _) ->
Anonymous.check_double_preendorsement_evidence_conflict
operation_conflict_state
oph
operation
| Single (Double_endorsement_evidence _) ->
Anonymous.check_double_endorsement_evidence_conflict
operation_conflict_state
oph
operation
| Single (Double_baking_evidence _) ->
Anonymous.check_double_baking_evidence_conflict
operation_conflict_state
oph
operation
| Single (Drain_delegate _) ->
Anonymous.check_drain_delegate_conflict
operation_conflict_state
oph
operation
| Single (Seed_nonce_revelation _) ->
Anonymous.check_seed_nonce_revelation_conflict
operation_conflict_state
oph
operation
| Single (Vdf_revelation _) ->
Anonymous.check_vdf_revelation_conflict operation_conflict_state oph
| Single (Manager_operation _) ->
Manager.check_manager_operation_conflict
operation_conflict_state
oph
operation
| Cons (Manager_operation _, _) ->
Manager.check_manager_operation_conflict
operation_conflict_state
oph
operation
| Single (Failing_noop _) -> ok_unit
let add_valid_operation operation_conflict_state oph (type kind)
(operation : kind operation) =
match operation.protocol_data.contents with
| Single (Preendorsement _) ->
Consensus.add_preendorsement operation_conflict_state oph operation
| Single (Endorsement consensus_content) ->
let endorsement_kind =
if
Consensus.is_normal_endorsement_assuming_valid
operation_conflict_state
consensus_content
then Consensus.Normal_endorsement 0
else Grandparent_endorsement
in
Consensus.add_endorsement
operation_conflict_state
oph
operation
endorsement_kind
| Single (Dal_slot_availability _) ->
Consensus.add_dal_slot_availability operation_conflict_state oph operation
| Single (Proposals _) ->
Voting.add_proposals operation_conflict_state oph operation
| Single (Ballot _) ->
Voting.add_ballot operation_conflict_state oph operation
| Single (Activate_account _) ->
Anonymous.add_activate_account operation_conflict_state oph operation
| Single (Double_preendorsement_evidence _) ->
Anonymous.add_double_preendorsement_evidence
operation_conflict_state
oph
operation
| Single (Double_endorsement_evidence _) ->
Anonymous.add_double_endorsement_evidence
operation_conflict_state
oph
operation
| Single (Double_baking_evidence _) ->
Anonymous.add_double_baking_evidence
operation_conflict_state
oph
operation
| Single (Drain_delegate _) ->
Anonymous.add_drain_delegate operation_conflict_state oph operation
| Single (Seed_nonce_revelation _) ->
Anonymous.add_seed_nonce_revelation operation_conflict_state oph operation
| Single (Vdf_revelation _) ->
Anonymous.add_vdf_revelation operation_conflict_state oph
| Single (Manager_operation _) ->
Manager.add_manager_operation operation_conflict_state oph operation
| Cons (Manager_operation _, _) ->
Manager.add_manager_operation operation_conflict_state oph operation
| Single (Failing_noop _) -> operation_conflict_state
let remove_operation operation_conflict_state (type kind)
(operation : kind operation) =
match operation.protocol_data.contents with
| Single (Preendorsement _) ->
Consensus.remove_preendorsement operation_conflict_state operation
| Single (Endorsement _) ->
Consensus.remove_endorsement operation_conflict_state operation
| Single (Dal_slot_availability _) ->
Consensus.remove_dal_slot_availability operation_conflict_state operation
| Single (Proposals _) ->
Voting.remove_proposals operation_conflict_state operation
| Single (Ballot _) -> Voting.remove_ballot operation_conflict_state operation
| Single (Activate_account _) ->
Anonymous.remove_activate_account operation_conflict_state operation
| Single (Double_preendorsement_evidence _) ->
Anonymous.remove_double_preendorsement_evidence
operation_conflict_state
operation
| Single (Double_endorsement_evidence _) ->
Anonymous.remove_double_endorsement_evidence
operation_conflict_state
operation
| Single (Double_baking_evidence _) ->
Anonymous.remove_double_baking_evidence operation_conflict_state operation
| Single (Drain_delegate _) ->
Anonymous.remove_drain_delegate operation_conflict_state operation
| Single (Seed_nonce_revelation _) ->
Anonymous.remove_seed_nonce_revelation operation_conflict_state operation
| Single (Vdf_revelation _) ->
Anonymous.remove_vdf_revelation operation_conflict_state
| Single (Manager_operation _) ->
Manager.remove_manager_operation operation_conflict_state operation
| Cons (Manager_operation _, _) ->
Manager.remove_manager_operation operation_conflict_state operation
| Single (Failing_noop _) -> operation_conflict_state
let check_validation_pass_consistency vi vs validation_pass =
let open Lwt_tzresult_syntax in
match vi.mode with
| Mempool | Construction _ -> return vs
| Application _ | Partial_validation _ -> (
match (vs.last_op_validation_pass, validation_pass) with
| None, validation_pass ->
return {vs with last_op_validation_pass = validation_pass}
| Some previous_vp, Some validation_pass ->
let* () =
fail_unless
Compare.Int.(previous_vp <= validation_pass)
(Validate_errors.Block.Inconsistent_validation_passes_in_block
{expected = previous_vp; provided = validation_pass})
in
return {vs with last_op_validation_pass = Some validation_pass}
| Some _, None -> fail Validate_errors.Failing_noop_error)
(** Increment [vs.op_count] for all operations, and record
non-consensus operation hashes in [vs.recorded_operations_rev]. *)
let record_operation vs ophash validation_pass_opt =
let op_count = vs.op_count + 1 in
match validation_pass_opt with
| Some n when Compare.Int.(n = Operation_repr.consensus_pass) ->
{vs with op_count}
| _ ->
{
vs with
op_count;
recorded_operations_rev = ophash :: vs.recorded_operations_rev;
}
let validate_operation ?(check_signature = true)
{info; operation_state; block_state} oph
(packed_operation : packed_operation) =
let open Lwt_tzresult_syntax in
let {shell; protocol_data = Operation_data protocol_data} =
packed_operation
in
let validation_pass_opt =
Alpha_context.Operation.acceptable_pass packed_operation
in
let* block_state =
check_validation_pass_consistency info block_state validation_pass_opt
in
let block_state = record_operation block_state oph validation_pass_opt in
let operation : _ Alpha_context.operation = {shell; protocol_data} in
match (info.mode, validation_pass_opt) with
| Partial_validation _, Some n
when Compare.Int.(n <> Operation_repr.consensus_pass) ->
return {info; operation_state; block_state}
| Partial_validation _, _ | Mempool, _ | Construction _, _ | Application _, _
-> (
match operation.protocol_data.contents with
| Single (Preendorsement _) ->
Consensus.validate_preendorsement
~check_signature
info
operation_state
block_state
oph
operation
| Single (Endorsement _) ->
Consensus.validate_endorsement
~check_signature
info
operation_state
block_state
oph
operation
| Single (Dal_slot_availability _) ->
let open Consensus in
let* () = check_dal_slot_availability info operation in
let*? () =
check_dal_slot_availability_conflict operation_state oph operation
|> wrap_dal_slot_availability_conflict
in
let operation_state =
add_dal_slot_availability operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Proposals _) ->
let open Voting in
let* () = check_proposals info ~check_signature operation in
let*? () =
check_proposals_conflict operation_state oph operation
|> wrap_proposals_conflict
in
let operation_state = add_proposals operation_state oph operation in
return {info; operation_state; block_state}
| Single (Ballot _) ->
let open Voting in
let* () = check_ballot info ~check_signature operation in
let*? () =
check_ballot_conflict operation_state oph operation
|> wrap_ballot_conflict
in
let operation_state = add_ballot operation_state oph operation in
return {info; operation_state; block_state}
| Single (Activate_account _) ->
let open Anonymous in
let* () = check_activate_account info operation in
let*? () =
check_activate_account_conflict operation_state oph operation
|> wrap_activate_account_conflict operation
in
let operation_state =
add_activate_account operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Double_preendorsement_evidence _) ->
let open Anonymous in
let* () = check_double_preendorsement_evidence info operation in
let*? () =
check_double_preendorsement_evidence_conflict
operation_state
oph
operation
|> wrap_denunciation_conflict Preendorsement
in
let operation_state =
add_double_preendorsement_evidence operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Double_endorsement_evidence _) ->
let open Anonymous in
let* () = check_double_endorsement_evidence info operation in
let*? () =
check_double_endorsement_evidence_conflict
operation_state
oph
operation
|> wrap_denunciation_conflict Endorsement
in
let operation_state =
add_double_endorsement_evidence operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Double_baking_evidence _) ->
let open Anonymous in
let* () = check_double_baking_evidence info operation in
let*? () =
check_double_baking_evidence_conflict operation_state oph operation
|> wrap_denunciation_conflict Block
in
let operation_state =
add_double_baking_evidence operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Drain_delegate _) ->
let open Anonymous in
let* () = check_drain_delegate info ~check_signature operation in
let*? () =
check_drain_delegate_conflict operation_state oph operation
|> wrap_drain_delegate_conflict operation
in
let operation_state =
add_drain_delegate operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Seed_nonce_revelation _) ->
let open Anonymous in
let* () = check_seed_nonce_revelation info operation in
let*? () =
check_seed_nonce_revelation_conflict operation_state oph operation
|> wrap_seed_nonce_revelation_conflict
in
let operation_state =
add_seed_nonce_revelation operation_state oph operation
in
return {info; operation_state; block_state}
| Single (Vdf_revelation _) ->
let open Anonymous in
let* () = check_vdf_revelation info operation in
let*? () =
check_vdf_revelation_conflict operation_state oph
|> wrap_vdf_revelation_conflict
in
let operation_state = add_vdf_revelation operation_state oph in
return {info; operation_state; block_state}
| Single (Manager_operation _) ->
Manager.validate_manager_operation
~check_signature
info
operation_state
block_state
oph
operation
| Cons (Manager_operation _, _) ->
Manager.validate_manager_operation
~check_signature
info
operation_state
block_state
oph
operation
| Single (Failing_noop _) -> fail Validate_errors.Failing_noop_error)
let are_endorsements_required vi =
let open Lwt_tzresult_syntax in
let+ first_level = First_level_of_protocol.get vi.ctxt in
let level_position_in_protocol =
Raw_level.diff vi.current_level.level first_level
in
Compare.Int32.(level_position_in_protocol > 1l)
let check_endorsement_power vi bs =
let required = Constants.consensus_threshold vi.ctxt in
let provided = bs.endorsement_power in
error_unless
Compare.Int.(provided >= required)
(Validate_errors.Block.Not_enough_endorsements {required; provided})
let vi vs checkable_payload_hash
( : Alpha_context.Block_header.contents) round fitness
=
let locked_round_evidence =
Option.map
(fun (preendorsement_round, preendorsement_count) ->
Block_header.{preendorsement_round; preendorsement_count})
vs.locked_round_evidence
in
Block_header.finalize_validate_block_header
~block_header_contents
~round
~fitness
~checkable_payload_hash
~locked_round_evidence
~consensus_threshold:(Constants.consensus_threshold vi.ctxt)
let compute_payload_hash block_state
( : Alpha_context.Block_header.contents) predecessor =
let operations_hash =
Operation_list_hash.compute (List.rev block_state.recorded_operations_rev)
in
Block_payload.hash
~predecessor
block_header_contents.payload_round
operations_hash
let finalize_block {info; block_state; _} =
let open Lwt_tzresult_syntax in
match info.mode with
| Application {fitness; predecessor_hash; block_data_contents; _} ->
let* are_endorsements_required = are_endorsements_required info in
let*? () =
if are_endorsements_required then
check_endorsement_power info block_state
else ok_unit
in
let block_payload_hash =
compute_payload_hash block_state block_data_contents predecessor_hash
in
let round = Fitness.round fitness in
let*? () =
finalize_validate_block_header
info
block_state
(Block_header.Expected_payload_hash block_payload_hash)
block_data_contents
round
fitness
in
return_unit
| Partial_validation _ ->
let* are_endorsements_required = are_endorsements_required info in
let*? () =
if are_endorsements_required then
check_endorsement_power info block_state
else ok_unit
in
return_unit
| Construction
{predecessor_round; predecessor_hash; round; block_data_contents; _} ->
let block_payload_hash =
compute_payload_hash block_state block_data_contents predecessor_hash
in
let locked_round_evidence = block_state.locked_round_evidence in
let checkable_payload_hash =
match locked_round_evidence with
| Some _ -> Block_header.Expected_payload_hash block_payload_hash
| None ->
Block_header.No_check
in
let* are_endorsements_required = are_endorsements_required info in
let*? () =
if are_endorsements_required then
check_endorsement_power info block_state
else ok_unit
in
let* fitness =
let locked_round =
match locked_round_evidence with
| None -> None
| Some (preendorsement_round, _power) -> Some preendorsement_round
in
let level = (Level.current info.ctxt).level in
let*? fitness =
Fitness.create ~level ~round ~predecessor_round ~locked_round
in
return fitness
in
let*? () =
finalize_validate_block_header
info
block_state
checkable_payload_hash
block_data_contents
round
fitness
in
return_unit
| Mempool ->
return_unit