status-im/status-go

package requests

import (
    "errors"

    "github.com/status-im/status-go/eth-node/crypto"
    "github.com/status-im/status-go/eth-node/types"
)

var ErrInvalidCommunityID = errors.New("invalid community id")
var ErrMissingPassword = errors.New("password is necessary when sending a list of addresses")
var ErrMissingSharedAddresses = errors.New("list of shared addresses is needed")
var ErrMissingAirdropAddress = errors.New("airdropAddress is needed")
var ErrNoAirdropAddressAmongAddressesToReveal = errors.New("airdropAddress must be in the set of addresses to reveal")
var ErrInvalidSignature = errors.New("invalid signature")

type EditSharedAddresses struct {
    CommunityID       types.HexBytes   `json:"communityId"`
    AddressesToReveal []string         `json:"addressesToReveal"`
    Signatures        []types.HexBytes `json:"signatures"` // the order of signatures should match the order of addresses
    AirdropAddress    string           `json:"airdropAddress"`
}

func (j *EditSharedAddresses) Validate() error {
    if len(j.CommunityID) == 0 {
        return ErrInvalidCommunityID
    }

    if len(j.AddressesToReveal) == 0 {
        return ErrMissingSharedAddresses
    }

    if j.AirdropAddress == "" {
        return ErrMissingAirdropAddress
    }

    found := false
    for _, address := range j.AddressesToReveal {
        if address == j.AirdropAddress {
            found = true
            break
        }
    }

    if !found {
        return ErrNoAirdropAddressAmongAddressesToReveal
    }

    for _, signature := range j.Signatures {
        if len(signature) > 0 && len(signature) != crypto.SignatureLength {
            return ErrInvalidSignature
        }
    }

    return nil
}