Evgenii Stratonikov
23e85d11c4
It was reverted because `Verify` with arguments was not well supported
by the client software. Thanks to recent `System.Runtime.CurrentSigners`
call from neo-go v0.104.0 we can take the best of both worlds.
Verify with argument still looks better (less overhead), but this
implementation should work too. Sadly, `overloads` are not of much use
here because verification routines take the _first_ method from the
manifest, albeit with arbitrary number of arguments.
This reverts commit a0b73150c6 with some
changes on-top.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
package proxy
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import (
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"git.frostfs.info/TrueCloudLab/frostfs-contract/common"
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/gas"
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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/runtime"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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const accountKeyPrefix = 'a'
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// OnNEP17Payment is a callback for NEP-17 compatible native GAS contract.
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func OnNEP17Payment(from interop.Hash160, amount int, data any) {
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caller := runtime.GetCallingScriptHash()
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if !common.BytesEqual(caller, []byte(gas.Hash)) {
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common.AbortWithMessage("proxy contract accepts GAS only")
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}
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}
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func _deploy(data any, isUpdate bool) {
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if isUpdate {
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args := data.([]any)
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common.CheckVersion(args[len(args)-1].(int))
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return
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}
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runtime.Log("proxy contract initialized")
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}
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// Update method updates contract source code and manifest. It can be invoked
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// only by committee.
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func Update(script []byte, manifest []byte, data any) {
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if !common.HasUpdateAccess() {
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panic("only committee can update contract")
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}
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management.UpdateWithData(script, manifest, common.AppendVersion(data))
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runtime.Log("proxy contract updated")
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}
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// Verify method returns true if transaction contains valid multisignature of
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// Alphabet nodes of the Inner Ring or any of the trusted accounts added via AddAccount.
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func Verify() bool {
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if !runtime.GetScriptContainer().Sender.Equals(runtime.GetExecutingScriptHash()) {
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return false
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}
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signers := runtime.CurrentSigners()
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ctx := storage.GetReadOnlyContext()
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for i := 1; /* skip sender */ i < len(signers); i++ {
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if storage.Get(ctx, append([]byte{accountKeyPrefix}, signers[i].Account...)) != nil {
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return true
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}
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}
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if runtime.CheckWitness(common.CommitteeAddress()) {
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return true
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}
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if runtime.CheckWitness(common.AlphabetAddress()) {
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return true
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}
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return false
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}
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// Version returns the version of the contract.
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func Version() int {
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return common.Version
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}
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func AddAccount(addr interop.Hash160) {
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common.CheckWitness(common.CommitteeAddress())
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ctx := storage.GetContext()
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storage.Put(ctx, append([]byte{accountKeyPrefix}, addr...), []byte{1})
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}
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func RemoveAccount(addr interop.Hash160) {
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common.CheckWitness(common.CommitteeAddress())
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ctx := storage.GetContext()
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storage.Delete(ctx, append([]byte{accountKeyPrefix}, addr...))
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}
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