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A node is now quailified only if it has no pending fine and staked >=
minstake.
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* dex: rebuild connection if dkg reset
* core: vm: fix governance contract
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* core: vm: update set size on node info change
* fix typo
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* vendor: sync to latest core
* core: merge notarySet and dkgSet
* dex: optimize network traffic for finalized block
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* vendor: sync to latest core
* core/vm: remove addDKG functions
* core: fix conflict
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Since a qualified node might fail stopped, we need to remove them from
qualified nodes to maintain network integrity. We do this by inspect the
previous round to see if there are dead nodes. A dead node is a notary
set node that does not propose any block in the previous round. We
disqualify them by fining them so their staked value is 1 wei below
minStake. This make them unqualified for being notary set in the follow
on rounds.
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Add two maps to check the uniqueness of DKGMasterPublicKey and DKGComplaints to
prevent malicious actors from spamming it.
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* vendor: sync to latest core
* core: check dkg reset
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* dex: implement recovery mechanism
The DEXON recovery protocol allows us to use the Ethereum blockchain as a
fallback consensus chain to coordinate recovery.
* fix
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Since the VM might be called from different source (downloader, RPC,
etc.). We need to make the call state separate. Modify the calling
sequence so a new oracle contract instance is used on each run.
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The current delegation mechanism are prone to unstaking attack. i.e. a
malicious attacker could unstake a small amount from a lot of node it
staked before and make them unqualified, which leads to potential
failure of the network.
Since DEXON does not use consensus like DPoS, node is required to have
at least MinStake in order to become a node. Voting mechanism is not
required in our system since qualified node does not depends on the
number of votes. Instead of managing the delegation mechanism in
governance contract, we should let the owner manage the delegation and
reward distribution mechanism on their own.
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Also remove app_test.go because of the refactor bojie@ is working on.
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There are two keys in the system: one is the owner's key which is used
for stake / unstake. The other is the node key which is used for DKG
related operations. We need to allow them to be different so fund
renmains safe even if the the node key is lost.
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* vendor: sync to latest core
* fix for single chain
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* core/vm: update abi
* core/vm: add MinGasPrice to gov
* params: Add MinGasPrice to Config
* dex: SuggestPrice from Governance
* test: add minGasPrice to genesis.json
* core: check underpriced tx
* dex: verify with gas price
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* change default sync_core.sh
* vendor: sync to latest core
* core: Remove K, Phi and NumChain
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* vm: Update gov abi
* vm: Add DKGResetCount to state helper
* vm: add getter
* vm: Add DKGReset event
* vm: Add resetDKG method
* vm: check resetDKG criteria
* vm: Add new CRS
* vm: add helper pop2DByteArray
* vm: emit event
* vm: Add CoreMock to GovernanceContract
* vm: bug fix
* add test for resetDKG
* vm: Add test
* fix test
* Modify mock interface
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* core/vm: add delegatorAddr to withdrawn event
* core/vm: update gov abi
* core/vm: add NodeRemoved event
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To prevent attacker from sending TX through a intermediate contract.
Always use the original tx sender's adddress and nonce.
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The original algorithm used for calculating algorithm is vulnerable to
cross context re-entry attack. Example as follows:
contract B {
event Value(uint256 value);
uint256 public value;
function call() public {
value = rand;
emit Value(value);
}
}
contract A {
function randTwice(address bAddr) public {
B b = B(bAddr);
b.call.gas(100000)();
b.call.gas(100000)();
}
}
The two `b.call` will result in the same randomness value. This commit
fix the issue by recording a called index used to store how many times
opRand is called, and use it as argument to the Keccak call.
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Instead of having BP to send a tx to register the round height, just
modify the state when finalizing block.
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(#168)
Refactor GenerateDexonChain function, move governance tx logic to
the user of GenerateDexonChain (testchain_test.go) and move fake node set
code to FakeDexcon.
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Add totalSupply and totalStaked in the governance contract for the
preperation of DEXON cryptoeconomics 4.0.
Also removed the unstaked variable in node info and improve tests for
delegate/undeleate.
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* core/vm: Add Fined field to nodeInfo.
* core/vm: Add PayFine to Governance
* Not qualify if staked-fine < minStake()
* Add test for fine
* Update genesis hash
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Merging these commits in DEXON consensus core:
- https://github.com/dexon-foundation/dexon-consensus/commit/dce509a13ef5873b9cae3c1cabdb97e219b6fb7d
- https://github.com/dexon-foundation/dexon-consensus/commit/6d1c1aeea0d3e75d10cbb2712c68b4c422ba8ba6
- https://github.com/dexon-foundation/dexon-consensus/commit/c1ed57c4abaf1f4758e52f082bb7114ad00c8b39
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* core/vm: Add DKGMPKReady
* param: update GenesisHash
* vendor: sync to latest core
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Only allow a user to withdraw funds after a certain lockup
period. This way, the fund of a bad actor could be confiscated before he
could escape.
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Since we use -1 to represent the offset of empty value, we should make
the return type int256 instead of uint256.
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Implement delegate/undelegate function to allow others to delegate it's
fund to stake on a node. Also added governance contract tests.
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Fix gas calculation in governance contract.
Correctly register round height when processing pending blocks. We
should register the mapping when we get the pending block instead of
waiting for block confirmation.
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InsertChain() need to record the correct roundHeight mapping in order to
process snapshotRoundHeight() governance method correctly.
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* vendor: sync consensus core
* core: validate DKG set with correct nodeset in round-2
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* core: vm: add an EVM benchmark
* core: vm: optimize stack allocation and instruction for calculating 2^n
* Add DEXONBet bench
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* core: push height of round 0 in genesis block
* vm: fix governance dispatch method name mismatch with abi
also rename RoundHeightLoc to roundHeightLoc
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DEXON has a built-in on chain random oracle that allow one to retrieve a
random variable. Add a new opcode `RAND` to load the random variable
onto the stack.
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This PR adds a new fork which disables EIP-1283. Internally it's called Petersburg,
but the genesis/config field is ConstantinopleFix.
The block numbers are:
7280000 for Constantinople on Mainnet
7280000 for ConstantinopleFix on Mainnet
4939394 for ConstantinopleFix on Ropsten
9999999 for ConstantinopleFix on Rinkeby (real number decided later)
This PR also defaults to using the same ConstantinopleFix number as whatever
Constantinople is set to. That is, it will default to mainnet behaviour if ConstantinopleFix
is not set.This means that for private networks which have already transitioned
to Constantinople, this PR will break the network unless ConstantinopleFix is
explicitly set!
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filesystem
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core/vm: check empty in extcodehash
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This fixes the import cycle build error in core/vm tests.
There is no need to refer to core/vm for a type definition.
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This adds the global accumulated refund counter to the standard
json output as a numeric json value. Previously this was not very
interesting since it was not used much, but with the new sstore
gas changes the value is a lot more interesting from a consensus
investigation perspective.
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* first impl of eth_getProof
* fixed docu
* added comments and refactored based on comments from holiman
* created structs
* handle errors correctly
* change Value to *hexutil.Big in order to have the same output as parity
* use ProofList as return type
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* core/vm : fix failing testcase
* core/vm: fix nitpick
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* core/vm: create2 address generation tests
* core/vm: per byte cost of CREATE2
* core/vm: fix linter issue in test
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* core/vm/runtim: benchmark create/create2
* core/vm: do less hashing in CREATE2
* core/vm: avoid storing jumpdest analysis for initcode
* core/vm: avoid unneccesary lookups, remove unused fields
* core/vm: go formatting tests
* core/vm: save jumpdest analysis locally
* core/vm: use common.Hash instead of nil, fix review comments
* core/vm: removed type destinations
* core/vm: correct check for empty hash
* eth: more elegant api_tracer
* core/vm: address review concerns
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Eip1283
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Interpreter initialization is left to the PRs implementing them.
Options for external interpreters are passed after a colon in the
`--vm.ewasm` and `--vm.evm` switches.
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Makes Interface interface a bit more stateless and abstract.
Obviously this change is dictated by EVMC design. The EVMC tries to keep the responsibility for EVM features totally inside the VMs, if feasible. This makes VM "stateless" because VM does not need to pass any information between executions, all information is included in parameters of the execute function.
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opcode (#17538)
This commit does a few things at once:
- Updates the tests to contain the latest data from ethereum/tests repo.
- Enables Constantinople state tests. This is needed to be able to
fuzz-test the evm with constantinople rules.
- Fixes the error in opSAR that we've known about for some time. I was
kind of saving it to see if we hit upon it with the random test
generator, but it's difficult to both enable the tests and have the
bug there -- we don't want to forget about it, so maybe it's better
to just fix it.
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antything --> anything
:P
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- Update benchmarks to use a pool of int pools.
Unless benchmarks are aborted with segmentation fault.
Signed-off-by: Hyung-Kyu Choi <hqueue@users.noreply.github.com>
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- Define an Interpreter interface
- One contract can call contracts from other interpreter types.
- Pass the interpreter to the operands instead of the evm.
This is meant to prevent type assertions in operands.
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* core/vm, params: implement EXTCODEHASH opcode
* core, params: tiny fixes and polish
* core: add function description
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* core, crypto, params: implement CREATE2 evm instrction
* core/vm: add opcode to string mapping
* core: remove past fork checking
* core, crypto: use option2 to generate new address
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* core/vm: A pool for int pools
* core/vm: fix rebase issue
* core/vm: push leftover stack items after execution, not before
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* core/vm: clear linter warnings
* core/vm: review input
* core/vm.go: revert lint in noop as per request
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* core: move test util var/func to test file
* core: remove useless func
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* vm/test: add tests+benchmarks for mstore
* core/vm: less alloc and copying for mstore
* core/vm: less allocs in sload
* vm: check for errors more correctly
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params: fix golint warnings
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This commit adds many comments and removes unused code.
It also removes the EmptyHash function, which had some uses
but was silly.
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* all: get rid of error when create mdb
* core: clean up variables definition
* all: inline mdb definition
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* common: delete StringToAddress, StringToHash
These functions are confusing because they don't parse hex, but use the
bytes of the string. This change removes them, replacing all uses of
StringToAddress(s) by BytesToAddress([]byte(s)).
* eth/filters: remove incorrect use of common.BytesToAddress
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* vm: optimize eq, slt, sgt and iszero + tests
* core/vm: fix error in slt/sgt, found by vmtests. Added testcase
* core/vm: make slt/sgt cleaner
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* core/vm, crypto/bn256: switch over to cloudflare library
* crypto/bn256: unmarshal constraint + start pure go impl
* crypto/bn256: combo cloudflare and google lib
* travis: drop 386 test job
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* core, vm, common: define constantinople fork, start implementation of shift instructions
* vm: more testcases
* vm: add tests for intpool erroneous intpool handling
* core, vm, common: fix constantinople review concerns
* vm: add string<->op definitions for new opcodes
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Fixes #15777 because null is now allowed for hexutil.Bytes.
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* core/types, core/vm, eth, tests: regenerate gencodec files
* Makefile: update devtools target
Install protoc-gen-go and print reminders about npm, solc and protoc.
Also switch to github.com/kevinburke/go-bindata because it's more
maintained.
* contracts/ens: update contracts and regenerate with solidity v0.4.19
The newer upstream version of the FIFSRegistrar contract doesn't set the
resolver anymore. The resolver is now deployed separately.
* contracts/release: regenerate with solidity v0.4.19
* contracts/chequebook: fix fallback and regenerate with solidity v0.4.19
The contract didn't have a fallback function, payments would be rejected
when compiled with newer solidity. References to 'mortal' and 'owned'
use the local file system so we can compile without network access.
* p2p/discv5: regenerate with recent stringer
* cmd/faucet: regenerate
* dashboard: regenerate
* eth/tracers: regenerate
* internal/jsre/deps: regenerate
* dashboard: avoid sed -i because it's not portable
* accounts/usbwallet/internal/trezor: fix go generate warnings
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Also raise traceLimit once again and print the VM
error and output on failure.
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* cmd, core, eth/tracers: support fancier js tracing
* eth, internal/web3ext: rework trace API, concurrency, chain tracing
* eth/tracers: add three more JavaScript tracers
* eth/tracers, vendor: swap ottovm to duktape for tracing
* core, eth, internal: finalize call tracer and needed extras
* eth, tests: prestate tracer, call test suite, rewinding
* vendor: fix windows builds for tracer js engine
* vendor: temporary duktape fix
* eth/tracers: fix up 4byte and evmdis tracer
* vendor: pull in latest duktape with my upstream fixes
* eth: fix some review comments
* eth: rename rewind to reexec to make it more obvious
* core/vm: terminate tracing using defers
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* core/vm: track 63/64 call gas off stack
Gas calculations in gasCall* relayed the available gas for calls by
replacing it on the stack. This lead to inconsistent traces, which we
papered over by copying the pre-execution stack in trace mode.
This change relays available gas using a temporary variable, off the
stack, and allows removing the weird copy.
* core/vm: remove stackCopy
* core/vm: pop call gas into pool
* core/vm: to -> addr
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* core/vm, internal/ethapi: tracer no full storage, nicer json output
* core/vm, internal/ethapi: omit disabled trace fields
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core/vm: improve jumpdest analysis
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* build: enable unconvert linter
- fixes #15453
- update code base for failing cases
* cmd/puppeth: replace syscall.Stdin with os.Stdin.Fd() for unconvert linter
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* params: Updated finalized gascosts for ECMUL/MODEXP
* core,tests: Updates pending new tests
* tests: Updated with new tests
* core: revert state transition bugfix
* tests: Add expected failures due to #15119
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* core/vm: Make max_codesize only applicable post Spurious Dragon/158/155/161/170
* tests: Remove expected failure
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core: add status as a consensus field in receipt
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* cmd/evm, core/vm, internal/ethapi: Add 'err' to tracer interface CaptureEnd
* cmd/evm: fix nullpointer when there is no error
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Signed-off-by: Ti Zhou <tizhou1986@gmail.com>
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core/vm: implement REVERT metropolis opcode
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* Fix STATICCALL so it is able to call precompiles too
* Fix write detection to use the correct value argument of CALL
* Fix write protection to ignore the value in CALLCODE
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* Update modexp gas calculation to new version
* Fix modexp modulo 0 special case to return zero
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* core: Remove unused `state` parameter to `NewEnv`.
`cfg.State` is used instead.
* core/vm/runtime: remove unused import
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core/vm: fix overflow in gas calculation formula
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With this commit, core/state's access to the underlying key/value database is
mediated through an interface. Database errors are tracked in StateDB and
returned by CommitTo or the new Error method.
Motivation for this change: We can remove the light client's duplicated copy of
core/state. The light client now supports node iteration, so tracing and storage
enumeration can work with the light client (not implemented in this commit).
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core/vm: improve opByte
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endianness
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t push --force
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Pre allocate the stack to 1024 optimising stack pushing, reducing calls
to runtime.makeslice and runtime.mallocgc
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Improve the duplication method of the stack to reuse big ints by passing
in an existing integer pool.
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Improved push instructions by removing unnecessary big int allocations
and by making it int instead of big.Int
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This commit is a preparation for the upcoming metropolis hardfork. It
prepares the state, core and vm packages such that integration with
metropolis becomes less of a hassle.
* Difficulty calculation requires header instead of individual
parameters
* statedb.StartRecord renamed to statedb.Prepare and added Finalise
method required by metropolis, which removes unwanted accounts from
the state (i.e. selfdestruct)
* State keeps record of destructed objects (in addition to dirty
objects)
* core/vm pre-compiles may now return errors
* core/vm pre-compiles gas check now take the full byte slice as argument
instead of just the size
* core/vm now keeps several hard-fork instruction tables instead of a
single instruction table and removes the need for hard-fork checks in
the instructions
* core/vm contains a empty restruction function which is added in
preparation of metropolis write-only mode operations
* Adds the bn256 curve
* Adds and sets the metropolis chain config block parameters (2^64-1)
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* Improved the standard evm tracer output and renamed it to WriteTrace
which now takes an io.Writer to write the logs to.
* Added WriteLogs which writes logs to the given writer in a readable
format.
* evm utility now also prints logs generated during the execution.
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The evm compile command implements a simple assembly language that compiles to
EVM bytecode.
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Logger updates
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* common/math: optimize PaddedBigBytes, use it more
name old time/op new time/op delta
PaddedBigBytes-8 71.1ns ± 5% 46.1ns ± 1% -35.15% (p=0.000 n=20+19)
name old alloc/op new alloc/op delta
PaddedBigBytes-8 48.0B ± 0% 32.0B ± 0% -33.33% (p=0.000 n=20+20)
* all: unify big.Int zero checks
Various checks were in use. This commit replaces them all with Int.Sign,
which is cheaper and less code.
eg templates:
func before(x *big.Int) bool { return x.BitLen() == 0 }
func after(x *big.Int) bool { return x.Sign() == 0 }
func before(x *big.Int) bool { return x.BitLen() > 0 }
func after(x *big.Int) bool { return x.Sign() != 0 }
func before(x *big.Int) int { return x.Cmp(common.Big0) }
func after(x *big.Int) int { return x.Sign() }
* common/math, crypto/secp256k1: make ReadBits public in package math
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* common: remove CurrencyToString
Move denomination values to params instead.
* common: delete dead code
* common: move big integer operations to common/math
This commit consolidates all big integer operations into common/math and
adds tests and documentation.
There should be no change in semantics for BigPow, BigMin, BigMax, S256,
U256, Exp and their behaviour is now locked in by tests.
The BigD, BytesToBig and Bytes2Big functions don't provide additional
value, all uses are replaced by new(big.Int).SetBytes().
BigToBytes is now called PaddedBigBytes, its minimum output size
parameter is now specified as the number of bytes instead of bits. The
single use of this function is in the EVM's MSTORE instruction.
Big and String2Big are replaced by ParseBig, which is slightly stricter.
It previously accepted leading zeros for hexadecimal inputs but treated
decimal inputs as octal if a leading zero digit was present.
ParseUint64 is used in places where String2Big was used to decode a
uint64.
The new functions MustParseBig and MustParseUint64 are now used in many
places where parsing errors were previously ignored.
* common: delete unused big integer variables
* accounts/abi: replace uses of BytesToBig with use of encoding/binary
* common: remove BytesToBig
* common: remove Bytes2Big
* common: remove BigTrue
* cmd/utils: add BigFlag and use it for error-checked integer flags
While here, remove environment variable processing for DirectoryFlag
because we don't use it.
* core: add missing error checks in genesis block parser
* common: remove String2Big
* cmd/evm: use utils.BigFlag
* common/math: check for 256 bit overflow in ParseBig
This is supposed to prevent silent overflow/truncation of values in the
genesis block JSON. Without this check, a genesis block that set a
balance larger than 256 bits would lead to weird behaviour in the VM.
* cmd/utils: fixup import
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Removed exported statedb object accessors, reducing the chance for nasty
bugs to creep in. It's also ugly and unnecessary to have these methods.
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* vendor: add github.com/btcsuite/btcd/btcec
* crypto: add btcec fallback for sign/recover without cgo
This commit adds a non-cgo fallback implementation of secp256k1
operations.
* crypto, core/vm: remove wrappers for sha256, ripemd160
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Reworked the EVM gas instructions to use 64bit integers rather than
arbitrary size big ints. All gas operations, be it additions,
multiplications or divisions, are checked and guarded against 64 bit
integer overflows.
In additon, most of the protocol paramaters in the params package have
been converted to uint64 and are now constants rather than variables.
* common/math: added overflow check ops
* core: vmenv, env renamed to evm
* eth, internal/ethapi, les: unmetered eth_call and cancel methods
* core/vm: implemented big.Int pool for evm instructions
* core/vm: unexported intPool methods & verification methods
* core/vm: added memoryGasCost overflow check and test
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This reverts commit 8b57c494908637a5c0e74f8f7a13b3218e026757.
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Reworked the EVM gas instructions to use 64bit integers rather than
arbitrary size big ints. All gas operations, be it additions,
multiplications or divisions, are checked and guarded against 64 bit
integer overflows.
In additon, most of the protocol paramaters in the params package have
been converted to uint64 and are now constants rather than variables.
* common/math: added overflow check ops
* core: vmenv, env renamed to evm
* eth, internal/ethapi, les: unmetered eth_call and cancel methods
* core/vm: implemented big.Int pool for evm instructions
* core/vm: unexported intPool methods & verification methods
* core/vm: added memoryGasCost overflow check and test
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This significantly reduces the dependency closure of ethclient, which no
longer depends on core/vm as of this change.
All uses of vm.Logs are replaced by []*types.Log. NewLog is gone too,
the constructor simply returned a literal.
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The run loop, which previously contained custom opcode executes have been
removed and has been simplified to a few checks.
Each operation consists of 4 elements: execution function, gas cost function,
stack validation function and memory size function. The execution function
implements the operation's runtime behaviour, the gas cost function implements
the operation gas costs function and greatly depends on the memory and stack,
the stack validation function validates the stack and makes sure that enough
items can be popped off and pushed on and the memory size function calculates
the memory required for the operation and returns it.
This commit also allows the EVM to go unmetered. This is helpful for offline
operations such as contract calls.
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(#3455)
To address increasing complexity in code that handles signatures, this PR
discards all notion of "different" signature types at the library level. Both
the crypto and accounts package is reduced to only be able to produce plain
canonical secp256k1 signatures. This makes the crpyto APIs much cleaner,
simpler and harder to abuse.
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Environment is now a struct (not an interface). This
reduces a lot of tech-debt throughout the codebase where a virtual
machine environment had to be implemented in order to test or run it.
The new environment is suitable to be used en the json tests, core
consensus and light client.
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This field used to be assigned by the filter system and returned through
the RPC API. Now that we have a Go client that uses the underlying type,
the field needs to move. It is now assigned to true when the RemovedLogs
event is generated so the filter system doesn't need to care about the
field at all.
While here, remove the log list from ChainSideEvent. There are no users
of this field right now and any potential users could subscribe to
RemovedLogsEvent instead.
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