Ejemplo n.º 1
0
// also called by admin.contractInfo.get
func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, http *docserver.DocServer) (content []byte, err error) {
	// retrieve contract hash from state
	codehex := xeth.CodeAt(contractAddress)
	codeb := xeth.CodeAtBytes(contractAddress)

	if codehex == "0x" {
		err = fmt.Errorf("contract (%v) not found", contractAddress)
		return
	}
	codehash := common.BytesToHash(crypto.Sha3(codeb))
	// set up nameresolver with natspecreg + urlhint contract addresses
	res := resolver.New(xeth)

	// resolve host via HashReg/UrlHint Resolver
	uri, hash, err := res.KeyToUrl(codehash)
	if err != nil {
		return
	}

	// get content via http client and authenticate content using hash
	content, err = http.GetAuthContent(uri, hash)
	if err != nil {
		return
	}

	return
}
Ejemplo n.º 2
0
// also called by admin.contractInfo.get
func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, ds *docserver.DocServer) (content []byte, err error) {
	// retrieve contract hash from state
	codehex := xeth.CodeAt(contractAddress)
	codeb := xeth.CodeAtBytes(contractAddress)

	if codehex == "0x" {
		err = fmt.Errorf("contract (%v) not found", contractAddress)
		return
	}
	codehash := common.BytesToHash(crypto.Sha3(codeb))
	// set up nameresolver with natspecreg + urlhint contract addresses
	reg := registrar.New(xeth)

	// resolve host via HashReg/UrlHint Resolver
	hash, err := reg.HashToHash(codehash)
	if err != nil {
		return
	}
	if ds.HasScheme("bzz") {
		content, err = ds.Get("bzz://"+hash.Hex()[2:], "")
		if err == nil { // non-fatal
			return
		}
		err = nil
		//falling back to urlhint
	}

	uri, err := reg.HashToUrl(hash)
	if err != nil {
		return
	}

	// get content via http client and authenticate content using hash
	content, err = ds.GetAuthContent(uri, hash)
	if err != nil {
		return
	}
	return
}