forked from OpenBazaar/openbazaar-go
/
moderation.go
282 lines (258 loc) · 7.3 KB
/
moderation.go
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package core
import (
"crypto/sha256"
"errors"
"io/ioutil"
"os"
"path"
"path/filepath"
"strings"
"github.com/OpenBazaar/jsonpb"
"golang.org/x/net/context"
ma "gx/ipfs/QmWWQ2Txc2c6tqjsBpzg5Ar652cHPGNsQQp2SejkNmkUMb/go-multiaddr"
multihash "gx/ipfs/QmZyZDi491cCNTLfAhwcaDii2Kg4pwKRkhqQzURGDvY6ua/go-multihash"
"github.com/OpenBazaar/openbazaar-go/ipfs"
"github.com/OpenBazaar/openbazaar-go/pb"
)
// ModeratorPointerID moderator ipfs multihash
var ModeratorPointerID multihash.Multihash
// ErrNoListings - no listing error
// FIXME : This is not used anywhere
var ErrNoListings = errors.New("no listings to set moderators on")
func init() {
modHash := sha256.Sum256([]byte("moderators"))
encoded, err := multihash.Encode(modHash[:], multihash.SHA2_256)
if err != nil {
log.Fatal("Error creating moderator pointer ID (multihash encode)")
}
mh, err := multihash.Cast(encoded)
if err != nil {
log.Fatal("Error creating moderator pointer ID (multihash cast)")
}
ModeratorPointerID = mh
}
// IsModerator - Am I a moderator?
func (n *OpenBazaarNode) IsModerator() bool {
profile, err := n.GetProfile()
if err != nil {
return false
}
return profile.Moderator
}
// SetSelfAsModerator - set self as a moderator
func (n *OpenBazaarNode) SetSelfAsModerator(moderator *pb.Moderator) error {
if moderator != nil {
if moderator.Fee == nil {
return errors.New("Moderator must have a fee set")
}
if (int(moderator.Fee.FeeType) == 0 || int(moderator.Fee.FeeType) == 2) && moderator.Fee.FixedFee == nil {
return errors.New("Fixed fee must be set when using a fixed fee type")
}
// Update profile
profile, err := n.GetProfile()
if err != nil {
return err
}
moderator.AcceptedCurrencies = []string{NormalizeCurrencyCode(n.Wallet.CurrencyCode())}
profile.Moderator = true
profile.ModeratorInfo = moderator
err = n.UpdateProfile(&profile)
if err != nil {
return err
}
}
// Publish pointer
pointers, err := n.Datastore.Pointers().GetByPurpose(ipfs.MODERATOR)
ctx := context.Background()
if err != nil || len(pointers) == 0 {
addr, err := ma.NewMultiaddr("/ipfs/" + n.IpfsNode.Identity.Pretty())
if err != nil {
return err
}
pointer, err := ipfs.NewPointer(ModeratorPointerID, 64, addr, []byte(n.IpfsNode.Identity.Pretty()))
if err != nil {
return err
}
go ipfs.PublishPointer(n.IpfsNode, ctx, pointer)
pointer.Purpose = ipfs.MODERATOR
err = n.Datastore.Pointers().Put(pointer)
if err != nil {
return err
}
} else {
go ipfs.PublishPointer(n.IpfsNode, ctx, pointers[0])
}
return nil
}
// RemoveSelfAsModerator - relinquish moderatorship
func (n *OpenBazaarNode) RemoveSelfAsModerator() error {
// Update profile
profile, err := n.GetProfile()
if err != nil {
return err
}
profile.Moderator = false
err = n.UpdateProfile(&profile)
if err != nil {
return err
}
// Delete pointer from database
err = n.Datastore.Pointers().DeleteAll(ipfs.MODERATOR)
if err != nil {
return err
}
return nil
}
// GetModeratorFee - fetch moderator fee
func (n *OpenBazaarNode) GetModeratorFee(transactionTotal uint64) (uint64, error) {
file, err := ioutil.ReadFile(path.Join(n.RepoPath, "root", "profile.json"))
if err != nil {
return 0, err
}
profile := new(pb.Profile)
err = jsonpb.UnmarshalString(string(file), profile)
if err != nil {
return 0, err
}
switch profile.ModeratorInfo.Fee.FeeType {
case pb.Moderator_Fee_PERCENTAGE:
return uint64(float64(transactionTotal) * (float64(profile.ModeratorInfo.Fee.Percentage) / 100)), nil
case pb.Moderator_Fee_FIXED:
if strings.ToLower(profile.ModeratorInfo.Fee.FixedFee.CurrencyCode) == "btc" {
if profile.ModeratorInfo.Fee.FixedFee.Amount >= transactionTotal {
return 0, errors.New("Fixed moderator fee exceeds transaction amount")
}
return profile.ModeratorInfo.Fee.FixedFee.Amount, nil
}
fee, err := n.getPriceInSatoshi(profile.ModeratorInfo.Fee.FixedFee.CurrencyCode, profile.ModeratorInfo.Fee.FixedFee.Amount)
if err != nil {
return 0, err
} else if fee >= transactionTotal {
return 0, errors.New("Fixed moderator fee exceeds transaction amount")
}
return fee, err
case pb.Moderator_Fee_FIXED_PLUS_PERCENTAGE:
var fixed uint64
if strings.ToLower(profile.ModeratorInfo.Fee.FixedFee.CurrencyCode) == "btc" {
fixed = profile.ModeratorInfo.Fee.FixedFee.Amount
} else {
fixed, err = n.getPriceInSatoshi(profile.ModeratorInfo.Fee.FixedFee.CurrencyCode, profile.ModeratorInfo.Fee.FixedFee.Amount)
if err != nil {
return 0, err
}
}
percentage := uint64(float64(transactionTotal) * (float64(profile.ModeratorInfo.Fee.Percentage) / 100))
if fixed+percentage >= transactionTotal {
return 0, errors.New("Fixed moderator fee exceeds transaction amount")
}
return fixed + percentage, nil
default:
return 0, errors.New("Unrecognized fee type")
}
}
// SetModeratorsOnListings - set moderators for a listing
func (n *OpenBazaarNode) SetModeratorsOnListings(moderators []string) error {
absPath, err := filepath.Abs(path.Join(n.RepoPath, "root", "listings"))
if err != nil {
return err
}
hashes := make(map[string]string)
walkpath := func(p string, f os.FileInfo, err error) error {
if !f.IsDir() {
file, err := ioutil.ReadFile(p)
if err != nil {
return err
}
sl := new(pb.SignedListing)
err = jsonpb.UnmarshalString(string(file), sl)
if err != nil {
return err
}
coupons, err := n.Datastore.Coupons().Get(sl.Listing.Slug)
if err != nil {
return err
}
couponMap := make(map[string]string)
for _, c := range coupons {
couponMap[c.Hash] = c.Code
}
for _, coupon := range sl.Listing.Coupons {
code, ok := couponMap[coupon.GetHash()]
if ok {
coupon.Code = &pb.Listing_Coupon_DiscountCode{DiscountCode: code}
}
}
sl.Listing.Moderators = moderators
sl, err = n.SignListing(sl.Listing)
if err != nil {
return err
}
m := jsonpb.Marshaler{
EnumsAsInts: false,
EmitDefaults: false,
Indent: " ",
OrigName: false,
}
fi, err := os.Create(p)
if err != nil {
return err
}
out, err := m.MarshalToString(sl)
if err != nil {
return err
}
if _, err := fi.WriteString(out); err != nil {
return err
}
hash, err := ipfs.GetHashOfFile(n.IpfsNode, p)
if err != nil {
return err
}
hashes[sl.Listing.Slug] = hash
return nil
}
return nil
}
err = filepath.Walk(absPath, walkpath)
if err != nil {
return err
}
// Update moderators and hashes on index
updater := func(listing *ListingData) error {
listing.ModeratorIDs = moderators
if hash, ok := hashes[listing.Slug]; ok {
listing.Hash = hash
}
return nil
}
return n.UpdateEachListingOnIndex(updater)
}
// NotifyModerators - notify moderators(peers)
func (n *OpenBazaarNode) NotifyModerators(moderators []string) error {
settings, err := n.Datastore.Settings().Get()
if err != nil {
return err
}
currentMods := make(map[string]bool)
if settings.StoreModerators != nil {
for _, mod := range *settings.StoreModerators {
currentMods[mod] = true
}
}
var addedMods []string
for _, mod := range moderators {
if !currentMods[mod] {
addedMods = append(addedMods, mod)
} else {
delete(currentMods, mod)
}
}
removedMods := currentMods
for _, mod := range addedMods {
go n.SendModeratorAdd(mod)
}
for mod := range removedMods {
go n.SendModeratorRemove(mod)
}
return nil
}