// 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
}
func New(xeth *xeth.XEth, tx string, http *docserver.DocServer) (self *NatSpec, err error) {
// extract contract address from tx
var obj map[string]json.RawMessage
err = json.Unmarshal([]byte(tx), &obj)
if err != nil {
return
}
var tmp []map[string]string
err = json.Unmarshal(obj["params"], &tmp)
if err != nil {
return
}
contractAddress := tmp[0]["to"]
// retrieve contract hash from state
if !xeth.IsContract(contractAddress) {
err = fmt.Errorf("NatSpec error: contract not found")
return
}
codehex := xeth.CodeAt(contractAddress)
codeHash := common.BytesToHash(crypto.Sha3(common.Hex2Bytes(codehex[2:])))
// parse out host/domain
// set up nameresolver with natspecreg + urlhint contract addresses
res := resolver.New(
xeth,
resolver.URLHintContractAddress,
resolver.HashRegContractAddress,
)
// 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
}
// get abi, userdoc
var obj2 map[string]json.RawMessage
err = json.Unmarshal(content, &obj2)
if err != nil {
return
}
abi := []byte(obj2["abi"])
userdoc := []byte(obj2["userdoc"])
self, err = NewWithDocs(abi, userdoc, tx)
return
}
func (self *testFrontend) testResolver() *resolver.Resolver {
return resolver.New(self.xeth, resolver.URLHintContractAddress, resolver.HashRegContractAddress)
}
func TestContract(t *testing.T) {
t.Skip()
tmp, repl, ethereum := testJEthRE(t)
if err := ethereum.Start(); err != nil {
t.Errorf("error starting ethereum: %v", err)
return
}
defer ethereum.Stop()
defer os.RemoveAll(tmp)
var txc uint64
coinbase := common.HexToAddress(testAddress)
resolver.New(repl.xeth).CreateContracts(coinbase)
// time.Sleep(1000 * time.Millisecond)
// checkEvalJSON(t, repl, `eth.getBlock("pending", true).transactions.length`, `2`)
source := `contract test {\n` +
" /// @notice Will multiply `a` by 7." + `\n` +
` function multiply(uint a) returns(uint d) {\n` +
` return a * 7;\n` +
` }\n` +
`}\n`
checkEvalJSON(t, repl, `admin.contractInfo.stop()`, `true`)
contractInfo, err := ioutil.ReadFile("info_test.json")
if err != nil {
t.Fatalf("%v", err)
}
checkEvalJSON(t, repl, `primary = eth.accounts[0]`, `"`+testAddress+`"`)
checkEvalJSON(t, repl, `source = "`+source+`"`, `"`+source+`"`)
// if solc is found with right version, test it, otherwise read from file
sol, err := compiler.New("")
if err != nil {
t.Logf("solc not found: mocking contract compilation step")
} else if sol.Version() != solcVersion {
t.Logf("WARNING: solc different version found (%v, test written for %v, may need to update)", sol.Version(), solcVersion)
}
if err != nil {
info, err := ioutil.ReadFile("info_test.json")
if err != nil {
t.Fatalf("%v", err)
}
_, err = repl.re.Run(`contract = JSON.parse(` + strconv.Quote(string(info)) + `)`)
if err != nil {
t.Errorf("%v", err)
}
} else {
checkEvalJSON(t, repl, `contract = eth.compile.solidity(source).test`, string(contractInfo))
}
checkEvalJSON(t, repl, `contract.code`, `"0x605880600c6000396000f3006000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa114602e57005b603d6004803590602001506047565b8060005260206000f35b60006007820290506053565b91905056"`)
checkEvalJSON(
t, repl,
`contractaddress = eth.sendTransaction({from: primary, data: contract.code })`,
`"0x5dcaace5982778b409c524873b319667eba5d074"`,
)
callSetup := `abiDef = JSON.parse('[{"constant":false,"inputs":[{"name":"a","type":"uint256"}],"name":"multiply","outputs":[{"name":"d","type":"uint256"}],"type":"function"}]');
Multiply7 = eth.contract(abiDef);
multiply7 = Multiply7.at(contractaddress);
`
// time.Sleep(1500 * time.Millisecond)
_, err = repl.re.Run(callSetup)
if err != nil {
t.Errorf("unexpected error setting up contract, got %v", err)
}
// checkEvalJSON(t, repl, `eth.getBlock("pending", true).transactions.length`, `3`)
// why is this sometimes failing?
// checkEvalJSON(t, repl, `multiply7.multiply.call(6)`, `42`)
expNotice := ""
if repl.lastConfirm != expNotice {
t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
}
txc, repl.xeth = repl.xeth.ApplyTestTxs(repl.stateDb, coinbase, txc)
checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`)
checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary, gas: "1000000", gasPrice: "100000" })`, `undefined`)
expNotice = `About to submit transaction (no NatSpec info found for contract: content hash not found for '0x87e2802265838c7f14bb69eecd2112911af6767907a702eeaa445239fb20711b'): {"params":[{"to":"0x5dcaace5982778b409c524873b319667eba5d074","data": "0xc6888fa10000000000000000000000000000000000000000000000000000000000000006"}]}`
if repl.lastConfirm != expNotice {
t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
}
var contenthash = `"0x86d2b7cf1e72e9a7a3f8d96601f0151742a2f780f1526414304fbe413dc7f9bd"`
if sol != nil {
modContractInfo := versionRE.ReplaceAll(contractInfo, []byte(`"compilerVersion":"`+sol.Version()+`"`))
_ = modContractInfo
// contenthash = crypto.Sha3(modContractInfo)
}
checkEvalJSON(t, repl, `filename = "/tmp/info.json"`, `"/tmp/info.json"`)
checkEvalJSON(t, repl, `contenthash = admin.contractInfo.register(primary, contractaddress, contract, filename)`, contenthash)
checkEvalJSON(t, repl, `admin.contractInfo.registerUrl(primary, contenthash, "file://"+filename)`, `true`)
if err != nil {
t.Errorf("unexpected error registering, got %v", err)
}
checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`)
// update state
txc, repl.xeth = repl.xeth.ApplyTestTxs(repl.stateDb, coinbase, txc)
checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary, gas: "1000000", gasPrice: "100000" })`, `undefined`)
expNotice = "Will multiply 6 by 7."
if repl.lastConfirm != expNotice {
t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
}
}