46 lines
986 B
Go
46 lines
986 B
Go
package resolver
|
|
|
|
import (
|
|
"fmt"
|
|
"net/url"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/xeth"
|
|
)
|
|
|
|
/*
|
|
Resolver implements the Ethereum DNS mapping
|
|
NameReg : Domain Name (or Code hash of Contract) -> Content Hash
|
|
UrlHint : Content Hash -> Url Hint
|
|
*/
|
|
const (
|
|
urlHintContractAddress = "urlhint"
|
|
nameRegContractAddress = "nameReg"
|
|
)
|
|
|
|
type Resolver struct {
|
|
xeth *xeth.XEth
|
|
}
|
|
|
|
func (self *Resolver) NameToContentHash(name string) (hash common.Hash, err error) {
|
|
// look up in nameReg
|
|
copy(hash[:], []byte(name)[:32])
|
|
return
|
|
}
|
|
|
|
func (self *Resolver) ContentHashToUrl(hash common.Hash) (uri *url.URL, err error) {
|
|
// look up in nameReg
|
|
rawurl := fmt.Sprintf("bzz://%x/my/path/mycontract.sud", hash[:])
|
|
// mime type?
|
|
return url.Parse(rawurl)
|
|
}
|
|
|
|
func (self *Resolver) NameToUrl(name string) (uri *url.URL, err error) {
|
|
// look up in urlHint
|
|
hash, err := self.NameToContentHash(name)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return self.ContentHashToUrl(hash)
|
|
}
|