public bool DeployContractScript(StorageContext storage, Address contractOwner, string name, Address contractAddress, byte[] script, ContractInterface abi)
{
var scriptKey = GetContractKey(contractAddress, "script");
if (storage.Has(scriptKey))
{
return(false);
}
storage.Put(scriptKey, script);
var ownerBytes = contractOwner.ToByteArray();
var ownerKey = GetContractKey(contractAddress, "owner");
storage.Put(ownerKey, ownerBytes);
var abiBytes = abi.ToByteArray();
var abiKey = GetContractKey(contractAddress, "abi");
storage.Put(abiKey, abiBytes);
var nameBytes = Encoding.ASCII.GetBytes(name);
var nameKey = GetContractKey(contractAddress, "name");
storage.Put(nameKey, nameBytes);
var contractList = new StorageList(GetContractListKey(), storage);
contractList.Add <Address>(contractAddress);
return(true);
}
public void UpgradeContract(StorageContext storage, string name, byte[] script, ContractInterface abi)
{
if (Nexus.IsNativeContract(name) || ValidationUtils.IsValidTicker(name))
{
throw new ChainException($"Cannot upgrade this type of contract: {name}");
}
if (!IsContractDeployed(storage, name))
{
throw new ChainException($"Cannot upgrade non-existing contract: {name}");
}
var address = SmartContract.GetAddressForName(name);
var scriptKey = GetContractKey(address, "script");
storage.Put(scriptKey, script);
var abiKey = GetContractKey(address, "abi");
var abiBytes = abi.ToByteArray();
storage.Put(abiBytes, abiBytes);
}
public Transaction GenerateToken(PhantasmaKeys owner, string symbol, string name, BigInteger totalSupply,
int decimals, TokenFlags flags, byte[] tokenScript = null, Dictionary <string, int> labels = null, IEnumerable <ContractMethod> customMethods = null)
{
var version = Nexus.GetGovernanceValue(Nexus.RootStorage, Nexus.NexusProtocolVersionTag);
if (labels == null)
{
labels = new Dictionary <string, int>();
}
if (tokenScript == null)
{
// small script that restricts minting of tokens to transactions where the owner is a witness
var addressStr = Base16.Encode(owner.Address.ToByteArray());
string[] scriptString;
if (version >= 4)
{
scriptString = new string[] {
$"alias r3, $result",
$"alias r4, $owner",
$"@{AccountTrigger.OnMint}: nop",
$"load $owner 0x{addressStr}",
"push $owner",
"extcall \"Address()\"",
"extcall \"Runtime.IsWitness\"",
"pop $result",
$"jmpif $result, @end",
$"load r0 \"invalid witness\"",
$"throw r0",
$"@end: ret"
};
}
else
{
scriptString = new string[] {
$"alias r1, $triggerMint",
$"alias r2, $currentTrigger",
$"alias r3, $result",
$"alias r4, $owner",
$@"load $triggerMint, ""{AccountTrigger.OnMint}""",
$"pop $currentTrigger",
$"equal $triggerMint, $currentTrigger, $result",
$"jmpif $result, @mintHandler",
$"jmp @end",
$"@mintHandler: nop",
$"load $owner 0x{addressStr}",
"push $owner",
"extcall \"Address()\"",
"extcall \"Runtime.IsWitness\"",
"pop $result",
$"jmpif $result, @end",
$"load r0 \"invalid witness\"",
$"throw r0",
$"@end: ret"
};
}
DebugInfo debugInfo;
tokenScript = AssemblerUtils.BuildScript(scriptString, "GenerateToken", out debugInfo, out labels);
}
var sb = ScriptUtils.
BeginScript().
AllowGas(owner.Address, Address.Null, MinimumFee, 9999);
if (version >= 4)
{
var triggerMap = new Dictionary <AccountTrigger, int>();
var onMintLabel = AccountTrigger.OnMint.ToString();
if (labels.ContainsKey(onMintLabel))
{
triggerMap[AccountTrigger.OnMint] = labels[onMintLabel];
}
var methods = AccountContract.GetTriggersForABI(triggerMap);
if (customMethods != null)
{
methods = methods.Concat(customMethods);
}
var abi = new ContractInterface(methods, Enumerable.Empty <ContractEvent>());
var abiBytes = abi.ToByteArray();
sb.CallInterop("Nexus.CreateToken", owner.Address, symbol, name, totalSupply, decimals, flags, tokenScript, abiBytes);
}
else
{
sb.CallInterop("Nexus.CreateToken", owner.Address, symbol, name, totalSupply, decimals, flags, tokenScript);
}
if (!flags.HasFlag(TokenFlags.Fungible))
{
ContractInterface nftABI;
byte[] nftScript;
NFTUtils.GenerateNFTDummyScript(symbol, name, name, "http://simulator/nft/*", "http://simulator/img/*", out nftScript, out nftABI);
sb.CallInterop("Nexus.CreateTokenSeries", owner.Address, symbol, new BigInteger(0), totalSupply, TokenSeriesMode.Unique, nftScript, nftABI.ToByteArray());
}
sb.SpendGas(owner.Address);
var script = sb.EndScript();
var tx = MakeTransaction(owner, ProofOfWork.Minimal, Nexus.RootChain, script);
return(tx);
}
static byte[] GenCreateToken()
{
Console.Write("Token symbol? ");
string symbol = Console.ReadLine();
if (!ValidationUtils.IsValidTicker(symbol))
{
Console.Write("Invalid token symbol");
return(null);
}
Console.Write("Token name? ");
string name = Console.ReadLine();
TokenFlags flags = TokenFlags.Transferable;
var possibleValues = new[] { TokenFlags.Burnable, TokenFlags.Divisible, TokenFlags.Finite, TokenFlags.Fungible };
foreach (var val in possibleValues)
{
if (FetchAnswer($"Is {symbol} {val}?"))
{
flags |= val;
}
}
int decimals;
if (flags.HasFlag(TokenFlags.Divisible))
{
Console.Write($"How many decimals {symbol} has?: ");
if (!int.TryParse(Console.ReadLine(), out decimals) || decimals < 0 || decimals > 18)
{
Console.Write("Invalid decimals");
return(null);
}
}
else
{
decimals = 0;
}
BigInteger maxSupply;
if (flags.HasFlag(TokenFlags.Finite))
{
Console.Write($"What is the max supply of {symbol}?: ");
decimal val;
if (!decimal.TryParse(Console.ReadLine(), out val) || val <= 0)
{
Console.Write("Invalid decimals");
return(null);
}
maxSupply = UnitConversion.ToBigInteger(val, decimals);
}
else
{
maxSupply = 0;
}
var labels = new Dictionary <string, int>();
var addressStr = Base16.Encode(signerKeys.Address.ToByteArray());
string[] scriptString;
scriptString = new string[] {
$"alias r3, $result",
$"alias r4, $owner",
$"@{AccountTrigger.OnMint}: nop",
$"load $owner 0x{addressStr}",
"push $owner",
"extcall \"Address()\"",
"extcall \"Runtime.IsWitness\"",
"pop $result",
$"jmpif $result, @end",
$"load r0 \"invalid witness\"",
$"throw r0",
$"@end: ret"
};
DebugInfo debugInfo;
var tokenScript = AssemblerUtils.BuildScript(scriptString, "GenerateToken", out debugInfo, out labels);
var sb = ScriptUtils.
BeginScript().
AllowGas(signerKeys.Address, Address.Null, MinimumFee, 9999);
var triggerMap = new Dictionary <AccountTrigger, int>();
var onMintLabel = AccountTrigger.OnMint.ToString();
if (labels.ContainsKey(onMintLabel))
{
triggerMap[AccountTrigger.OnMint] = labels[onMintLabel];
}
var methods = AccountContract.GetTriggersForABI(triggerMap);
var abi = new ContractInterface(methods, Enumerable.Empty <ContractEvent>());
var abiBytes = abi.ToByteArray();
sb.CallInterop("Nexus.CreateToken", signerKeys.Address, symbol, name, maxSupply, decimals, flags, tokenScript, abiBytes);
if (!flags.HasFlag(TokenFlags.Fungible))
{
Console.Write("NFT deployment not supported yet");
return(null);
}
sb.SpendGas(signerKeys.Address);
var script = sb.EndScript();
return(script);
}