691 lines
16 KiB
Go
691 lines
16 KiB
Go
package containercontract
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/crypto"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/std"
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"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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"github.com/nspcc-dev/neofs-contract/common"
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)
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type (
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storageNode struct {
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info []byte
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}
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extendedACL struct {
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val []byte
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sig []byte
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pub interop.PublicKey
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}
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estimation struct {
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from interop.PublicKey
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size int
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}
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containerSizes struct {
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cid []byte
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estimations []estimation
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}
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)
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const (
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version = 1
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ownersKey = "ownersList"
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neofsIDContractKey = "identityScriptHash"
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balanceContractKey = "balanceScriptHash"
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netmapContractKey = "netmapScriptHash"
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notaryDisabledKey = "notary"
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containerFeeKey = "ContainerFee"
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containerIDSize = 32 // SHA256 size
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estimateKeyPrefix = "cnr"
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cleanupDelta = 3
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)
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var (
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eACLPrefix = []byte("eACL")
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)
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func _deploy(data interface{}, isUpdate bool) {
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args := data.([]interface{})
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notaryDisabled := args[0].(bool)
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owner := args[1].(interop.Hash160)
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addrNetmap := args[2].(interop.Hash160)
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addrBalance := args[3].(interop.Hash160)
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addrID := args[4].(interop.Hash160)
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ctx := storage.GetContext()
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if !common.HasUpdateAccess(ctx) {
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panic("only owner can reinitialize contract")
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}
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if len(addrNetmap) != 20 || len(addrBalance) != 20 || len(addrID) != 20 {
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panic("init: incorrect length of contract script hash")
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}
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storage.Put(ctx, common.OwnerKey, owner)
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storage.Put(ctx, netmapContractKey, addrNetmap)
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storage.Put(ctx, balanceContractKey, addrBalance)
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storage.Put(ctx, neofsIDContractKey, addrID)
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// initialize the way to collect signatures
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storage.Put(ctx, notaryDisabledKey, notaryDisabled)
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if notaryDisabled {
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common.InitVote(ctx)
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runtime.Log("container contract notary disabled")
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}
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runtime.Log("container contract initialized")
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}
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func Migrate(script []byte, manifest []byte) bool {
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ctx := storage.GetReadOnlyContext()
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if !common.HasUpdateAccess(ctx) {
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runtime.Log("only owner can update contract")
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return false
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}
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management.Update(script, manifest)
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runtime.Log("container contract updated")
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return true
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}
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func Put(container []byte, signature interop.Signature, publicKey interop.PublicKey) bool {
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ctx := storage.GetContext()
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notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
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offset := int(container[1])
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offset = 2 + offset + 4 // version prefix + version size + owner prefix
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ownerID := container[offset : offset+25] // offset + size of owner
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containerID := crypto.Sha256(container)
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neofsIDContractAddr := storage.Get(ctx, neofsIDContractKey).(interop.Hash160)
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var ( // for invocation collection without notary
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alphabet = common.AlphabetNodes()
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nodeKey []byte
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alphabetCall bool
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)
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if notaryDisabled {
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nodeKey = common.InnerRingInvoker(alphabet)
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alphabetCall = len(nodeKey) != 0
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} else {
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multiaddr := common.AlphabetAddress()
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alphabetCall = runtime.CheckWitness(multiaddr)
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}
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if !alphabetCall {
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if !isSignedByOwnerKey(container, signature, ownerID, publicKey) {
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// check keys from NeoFSID
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keys := contract.Call(neofsIDContractAddr, "key", contract.ReadOnly, ownerID).([]interop.PublicKey)
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if !verifySignature(container, signature, keys) {
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panic("put: invalid owner signature")
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}
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}
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runtime.Notify("containerPut", container, signature, publicKey)
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return true
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}
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from := common.WalletToScriptHash(ownerID)
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netmapContractAddr := storage.Get(ctx, netmapContractKey).(interop.Hash160)
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balanceContractAddr := storage.Get(ctx, balanceContractKey).(interop.Hash160)
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containerFee := contract.Call(netmapContractAddr, "config", contract.ReadOnly, containerFeeKey).(int)
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details := common.ContainerFeeTransferDetails(containerID)
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// todo: check if new container with unique container id
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if notaryDisabled {
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threshold := len(alphabet)*2/3 + 1
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id := common.InvokeID([]interface{}{container, signature, publicKey}, []byte("put"))
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n := common.Vote(ctx, id, nodeKey)
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if n < threshold {
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return true
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}
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common.RemoveVotes(ctx, id)
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}
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for i := 0; i < len(alphabet); i++ {
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node := alphabet[i]
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to := contract.CreateStandardAccount(node.PublicKey)
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tx := contract.Call(balanceContractAddr, "transferX",
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contract.All,
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from,
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to,
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containerFee,
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details,
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)
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if !tx.(bool) {
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panic("put: can't transfer assets for container creation")
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}
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}
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addContainer(ctx, containerID, ownerID, container)
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contract.Call(neofsIDContractAddr, "addKey", contract.All, ownerID, [][]byte{publicKey})
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runtime.Log("put: added new container")
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return true
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}
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func Delete(containerID, signature []byte) bool {
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ctx := storage.GetContext()
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notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
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ownerID := getOwnerByID(ctx, containerID)
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if len(ownerID) == 0 {
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panic("delete: container does not exist")
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}
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var ( // for invocation collection without notary
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alphabet []common.IRNode
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nodeKey []byte
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alphabetCall bool
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)
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if notaryDisabled {
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alphabet = common.AlphabetNodes()
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nodeKey = common.InnerRingInvoker(alphabet)
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alphabetCall = len(nodeKey) != 0
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} else {
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multiaddr := common.AlphabetAddress()
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alphabetCall = runtime.CheckWitness(multiaddr)
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}
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if !alphabetCall {
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// check provided key
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neofsIDContractAddr := storage.Get(ctx, neofsIDContractKey).(interop.Hash160)
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keys := contract.Call(neofsIDContractAddr, "key", contract.ReadOnly, ownerID).([]interop.PublicKey)
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if !verifySignature(containerID, signature, keys) {
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panic("delete: invalid owner signature")
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}
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runtime.Notify("containerDelete", containerID, signature)
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return true
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}
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if notaryDisabled {
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threshold := len(alphabet)*2/3 + 1
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id := common.InvokeID([]interface{}{containerID, signature}, []byte("delete"))
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n := common.Vote(ctx, id, nodeKey)
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if n < threshold {
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return true
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}
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common.RemoveVotes(ctx, id)
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}
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removeContainer(ctx, containerID, ownerID)
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runtime.Log("delete: remove container")
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return true
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}
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func Get(containerID []byte) []byte {
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ctx := storage.GetReadOnlyContext()
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return storage.Get(ctx, containerID).([]byte)
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}
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func Owner(containerID []byte) []byte {
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ctx := storage.GetReadOnlyContext()
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return getOwnerByID(ctx, containerID)
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}
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func List(owner []byte) [][]byte {
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ctx := storage.GetReadOnlyContext()
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if len(owner) == 0 {
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return getAllContainers(ctx)
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}
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var list [][]byte
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owners := common.GetList(ctx, ownersKey)
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for i := 0; i < len(owners); i++ {
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ownerID := owners[i]
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if len(owner) != 0 && !common.BytesEqual(owner, ownerID) {
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continue
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}
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containers := common.GetList(ctx, ownerID)
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for j := 0; j < len(containers); j++ {
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container := containers[j]
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list = append(list, container)
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}
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}
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return list
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}
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func SetEACL(eACL, signature []byte) bool {
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ctx := storage.GetContext()
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// get container ID
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offset := int(eACL[1])
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offset = 2 + offset + 4
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containerID := eACL[offset : offset+32]
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ownerID := getOwnerByID(ctx, containerID)
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if len(ownerID) == 0 {
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panic("setEACL: container does not exists")
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}
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neofsIDContractAddr := storage.Get(ctx, neofsIDContractKey).(interop.Hash160)
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keys := contract.Call(neofsIDContractAddr, "key", contract.ReadOnly, ownerID).([]interop.PublicKey)
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if !verifySignature(eACL, signature, keys) {
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panic("setEACL: invalid eACL signature")
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}
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rule := extendedACL{
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val: eACL,
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sig: signature,
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}
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key := append(eACLPrefix, containerID...)
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common.SetSerialized(ctx, key, rule)
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runtime.Log("setEACL: success")
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return true
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}
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func EACL(containerID []byte) extendedACL {
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ctx := storage.GetReadOnlyContext()
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ownerID := getOwnerByID(ctx, containerID)
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if len(ownerID) == 0 {
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panic("getEACL: container does not exists")
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}
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eacl := getEACL(ctx, containerID)
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if len(eacl.sig) == 0 {
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return eacl
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}
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// attach corresponding public key if it was not revoked from neofs id
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neofsIDContractAddr := storage.Get(ctx, neofsIDContractKey).(interop.Hash160)
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keys := contract.Call(neofsIDContractAddr, "key", contract.ReadOnly, ownerID).([]interop.PublicKey)
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for i := range keys {
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key := keys[i]
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if crypto.VerifyWithECDsa(eacl.val, key, eacl.sig, crypto.Secp256r1) {
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eacl.pub = key
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break
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}
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}
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return eacl
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}
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func PutContainerSize(epoch int, cid []byte, usedSize int, pubKey interop.PublicKey) bool {
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ctx := storage.GetContext()
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if !runtime.CheckWitness(pubKey) {
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panic("container: invalid witness for size estimation")
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}
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if !isStorageNode(ctx, pubKey) {
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panic("container: only storage nodes can save size estimations")
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}
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key := estimationKey(epoch, cid)
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s := getContainerSizeEstimation(ctx, key, cid)
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// do not add estimation twice
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for i := range s.estimations {
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est := s.estimations[i]
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if common.BytesEqual(est.from, pubKey) {
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return false
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}
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}
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s.estimations = append(s.estimations, estimation{
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from: pubKey,
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size: usedSize,
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})
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storage.Put(ctx, key, std.Serialize(s))
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runtime.Log("container: saved container size estimation")
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return true
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}
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func GetContainerSize(id []byte) containerSizes {
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ctx := storage.GetReadOnlyContext()
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return getContainerSizeEstimation(ctx, id, nil)
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}
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func ListContainerSizes(epoch int) [][]byte {
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ctx := storage.GetReadOnlyContext()
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var buf interface{} = epoch
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key := []byte(estimateKeyPrefix)
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key = append(key, buf.([]byte)...)
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it := storage.Find(ctx, key, storage.KeysOnly)
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var result [][]byte
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for iterator.Next(it) {
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key := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
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result = append(result, key)
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}
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return result
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}
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func NewEpoch(epochNum int) {
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ctx := storage.GetContext()
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notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
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if notaryDisabled {
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indirectCall := common.FromKnownContract(
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ctx,
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runtime.GetCallingScriptHash(),
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netmapContractKey,
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)
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if !indirectCall {
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panic("newEpoch: this method must be invoked from inner ring")
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}
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} else {
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multiaddr := common.AlphabetAddress()
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if !runtime.CheckWitness(multiaddr) {
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panic("newEpoch: this method must be invoked from inner ring")
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}
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}
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candidates := keysToDelete(ctx, epochNum)
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for _, candidate := range candidates {
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storage.Delete(ctx, candidate)
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}
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}
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func StartContainerEstimation(epoch int) bool {
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ctx := storage.GetContext()
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notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
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var ( // for invocation collection without notary
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alphabet []common.IRNode
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nodeKey []byte
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)
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if notaryDisabled {
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alphabet = common.AlphabetNodes()
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nodeKey = common.InnerRingInvoker(alphabet)
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if len(nodeKey) == 0 {
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panic("startEstimation: only inner ring nodes can invoke this")
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}
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} else {
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multiaddr := common.AlphabetAddress()
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if !runtime.CheckWitness(multiaddr) {
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panic("startEstimation: only inner ring nodes can invoke this")
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}
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}
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if notaryDisabled {
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threshold := len(alphabet)*2/3 + 1
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id := common.InvokeID([]interface{}{epoch}, []byte("startEstimation"))
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n := common.Vote(ctx, id, nodeKey)
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if n < threshold {
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return true
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}
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common.RemoveVotes(ctx, id)
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}
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runtime.Notify("StartEstimation", epoch)
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runtime.Log("startEstimation: notification has been produced")
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return true
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}
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func StopContainerEstimation(epoch int) bool {
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ctx := storage.GetContext()
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notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
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var ( // for invocation collection without notary
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alphabet []common.IRNode
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nodeKey []byte
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)
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if notaryDisabled {
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alphabet = common.AlphabetNodes()
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nodeKey = common.InnerRingInvoker(alphabet)
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if len(nodeKey) == 0 {
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panic("stopEstimation: only inner ring nodes can invoke this")
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}
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} else {
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multiaddr := common.AlphabetAddress()
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if !runtime.CheckWitness(multiaddr) {
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panic("stopEstimation: only inner ring nodes can invoke this")
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}
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}
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if notaryDisabled {
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threshold := len(alphabet)*2/3 + 1
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id := common.InvokeID([]interface{}{epoch}, []byte("stopEstimation"))
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n := common.Vote(ctx, id, nodeKey)
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if n < threshold {
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return true
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}
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common.RemoveVotes(ctx, id)
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}
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runtime.Notify("StopEstimation", epoch)
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runtime.Log("stopEstimation: notification has been produced")
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return true
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}
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func Version() int {
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return version
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}
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func addContainer(ctx storage.Context, id []byte, owner []byte, container []byte) {
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addOrAppend(ctx, ownersKey, owner)
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addOrAppend(ctx, owner, id)
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storage.Put(ctx, id, container)
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}
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func removeContainer(ctx storage.Context, id []byte, owner []byte) {
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n := remove(ctx, owner, id)
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// if it was last container, remove owner from the list of owners
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if n == 0 {
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_ = remove(ctx, ownersKey, owner)
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}
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storage.Delete(ctx, id)
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}
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func addOrAppend(ctx storage.Context, key interface{}, value []byte) {
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list := common.GetList(ctx, key)
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for i := 0; i < len(list); i++ {
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if common.BytesEqual(list[i], value) {
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return
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}
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}
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if len(list) == 0 {
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list = [][]byte{value}
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} else {
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list = append(list, value)
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}
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common.SetSerialized(ctx, key, list)
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}
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// remove returns amount of left elements in the list
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func remove(ctx storage.Context, key interface{}, value []byte) int {
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var (
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list = common.GetList(ctx, key)
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newList = [][]byte{}
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)
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for i := 0; i < len(list); i++ {
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if !common.BytesEqual(list[i], value) {
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newList = append(newList, list[i])
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}
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}
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ln := len(newList)
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if ln == 0 {
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storage.Delete(ctx, key)
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} else {
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common.SetSerialized(ctx, key, newList)
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}
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return ln
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}
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func getAllContainers(ctx storage.Context) [][]byte {
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var list [][]byte
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it := storage.Find(ctx, []byte{}, storage.KeysOnly)
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for iterator.Next(it) {
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key := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
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if len(key) == containerIDSize {
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list = append(list, key)
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}
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}
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return list
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}
|
|
|
|
func getEACL(ctx storage.Context, cid []byte) extendedACL {
|
|
key := append(eACLPrefix, cid...)
|
|
data := storage.Get(ctx, key)
|
|
if data != nil {
|
|
return std.Deserialize(data.([]byte)).(extendedACL)
|
|
}
|
|
|
|
return extendedACL{val: []byte{}, sig: interop.Signature{}, pub: interop.PublicKey{}}
|
|
}
|
|
|
|
func verifySignature(msg []byte, sig interop.Signature, keys []interop.PublicKey) bool {
|
|
for i := range keys {
|
|
key := keys[i]
|
|
if crypto.VerifyWithECDsa(msg, key, sig, crypto.Secp256r1) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func getOwnerByID(ctx storage.Context, id []byte) []byte {
|
|
owners := common.GetList(ctx, ownersKey)
|
|
for i := 0; i < len(owners); i++ {
|
|
ownerID := owners[i]
|
|
containers := common.GetList(ctx, ownerID)
|
|
|
|
for j := 0; j < len(containers); j++ {
|
|
container := containers[j]
|
|
if common.BytesEqual(container, id) {
|
|
return ownerID
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func isSignedByOwnerKey(msg []byte, sig interop.Signature, owner []byte, key interop.PublicKey) bool {
|
|
if !isOwnerFromKey(owner, key) {
|
|
return false
|
|
}
|
|
|
|
return crypto.VerifyWithECDsa(msg, key, sig, crypto.Secp256r1)
|
|
}
|
|
|
|
func isOwnerFromKey(owner []byte, key interop.PublicKey) bool {
|
|
ownerSH := common.WalletToScriptHash(owner)
|
|
keySH := contract.CreateStandardAccount(key)
|
|
|
|
return common.BytesEqual(ownerSH, keySH)
|
|
}
|
|
|
|
func estimationKey(epoch int, cid []byte) []byte {
|
|
var buf interface{} = epoch
|
|
|
|
result := []byte(estimateKeyPrefix)
|
|
result = append(result, buf.([]byte)...)
|
|
|
|
return append(result, cid...)
|
|
}
|
|
|
|
func getContainerSizeEstimation(ctx storage.Context, key, cid []byte) containerSizes {
|
|
data := storage.Get(ctx, key)
|
|
if data != nil {
|
|
return std.Deserialize(data.([]byte)).(containerSizes)
|
|
}
|
|
|
|
return containerSizes{
|
|
cid: cid,
|
|
estimations: []estimation{},
|
|
}
|
|
}
|
|
|
|
// isStorageNode looks into _previous_ epoch network map, because storage node
|
|
// announce container size estimation of previous epoch.
|
|
func isStorageNode(ctx storage.Context, key interop.PublicKey) bool {
|
|
netmapContractAddr := storage.Get(ctx, netmapContractKey).(interop.Hash160)
|
|
snapshot := contract.Call(netmapContractAddr, "snapshot", contract.ReadOnly, 1).([]storageNode)
|
|
|
|
for i := range snapshot {
|
|
nodeInfo := snapshot[i].info
|
|
nodeKey := nodeInfo[2:35] // offset:2, len:33
|
|
|
|
if common.BytesEqual(key, nodeKey) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func keysToDelete(ctx storage.Context, epoch int) [][]byte {
|
|
results := [][]byte{}
|
|
|
|
it := storage.Find(ctx, []byte(estimateKeyPrefix), storage.KeysOnly)
|
|
for iterator.Next(it) {
|
|
k := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
|
|
nbytes := k[len(estimateKeyPrefix) : len(k)-32]
|
|
|
|
var n interface{} = nbytes
|
|
|
|
if epoch-n.(int) > cleanupDelta {
|
|
results = append(results, k)
|
|
}
|
|
}
|
|
|
|
return results
|
|
}
|