Example #1
0
// SetUrlToHash(from, hash, url) registers a url to a content hash so that the content can be fetched
// address is used as sender for the transaction and will be the owner of a new
// registry entry on first time use
// FIXME: silently doing nothing if sender is not the owner
// note that with content addressed storage, this step is no longer necessary
func (self *Registrar) SetUrlToHash(address common.Address, hash common.Hash, url string) (txh string, err error) {
	hashHex := common.Bytes2Hex(hash[:])
	var urlHex string
	urlb := []byte(url)
	var cnt byte
	n := len(urlb)

	for n > 0 {
		if n > 32 {
			n = 32
		}
		urlHex = common.Bytes2Hex(urlb[:n])
		urlb = urlb[n:]
		n = len(urlb)
		bcnt := make([]byte, 32)
		bcnt[31] = cnt
		data := registerUrlAbi +
			hashHex +
			common.Bytes2Hex(bcnt) +
			common.Bytes2Hex(common.Hex2BytesFixed(urlHex, 32))
		txh, err = self.backend.Transact(
			address.Hex(),
			UrlHintAddr,
			"", "", "", "",
			data,
		)
		if err != nil {
			return
		}
		cnt++
	}
	return
}
Example #2
0
func encodeName(name string, index uint8) (string, string) {
	extra := common.Bytes2Hex([]byte(name))
	if len(name) > 32 {
		return fmt.Sprintf("%064x", index), extra
	}
	return extra + falseHex[len(extra):], ""
}
Example #3
0
// registers some content hash to a key/code hash
// e.g., the contract Info combined Json Doc's ContentHash
// to CodeHash of a contract or hash of a domain
func (self *Registrar) SetHashToHash(address common.Address, codehash, dochash common.Hash) (txh string, err error) {
	_, err = self.SetOwner(address)
	if err != nil {
		return
	}
	codehex := common.Bytes2Hex(codehash[:])
	dochex := common.Bytes2Hex(dochash[:])

	data := registerContentHashAbi + codehex + dochex
	glog.V(logger.Detail).Infof("SetHashToHash data: %s sent  to %v\n", data, HashRegAddr)
	return self.backend.Transact(
		address.Hex(),
		HashRegAddr,
		"", "", "", "",
		data,
	)
}
Example #4
0
func (self *NatSpec) makeAbi2method(abiKey [8]byte) (meth *method) {
	for signature, m := range self.userDoc.Methods {
		name := strings.Split(signature, "(")[0]
		hash := []byte(common.Bytes2Hex(crypto.Sha3([]byte(signature))))
		var key [8]byte
		copy(key[:], hash[:8])
		if bytes.Equal(key[:], abiKey[:]) {
			meth = m
			meth.name = name
			return
		}
	}
	return
}