private static bool TryParseNewFormat(string str, out LightningConnectionString connectionString, out string error)
{
connectionString = null;
error = null;
var parts = str.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
Dictionary <string, string> keyValues = new Dictionary <string, string>();
foreach (var part in parts.Select(p => p.Trim()))
{
var idx = part.IndexOf('=', StringComparison.OrdinalIgnoreCase);
if (idx == -1)
{
error = "The format of the connectionString should a list of key=value delimited by semicolon";
return(false);
}
var key = part.Substring(0, idx).Trim().ToLowerInvariant();
var value = part.Substring(idx + 1).Trim();
if (keyValues.ContainsKey(key))
{
error = $"Duplicate key {key}";
return(false);
}
keyValues.Add(key, value);
}
var possibleTypes = String.Join(", ", typeMapping.Select(k => k.Key).ToArray());
LightningConnectionString result = new LightningConnectionString();
var type = Take(keyValues, "type");
if (type == null)
{
error = $"The key 'type' is mandatory, possible values are {possibleTypes}";
return(false);
}
if (!typeMapping.TryGetValue(type.ToLowerInvariant(), out var connectionType))
{
error = $"The key 'type' is invalid, possible values are {possibleTypes}";
return(false);
}
result.ConnectionType = connectionType;
switch (connectionType)
{
case LightningConnectionType.Charge:
{
var server = Take(keyValues, "server");
if (server == null)
{
error = $"The key 'server' is mandatory for charge connection strings";
return(false);
}
if (!Uri.TryCreate(server, UriKind.Absolute, out var uri) ||
(uri.Scheme != "http" && uri.Scheme != "https"))
{
error = $"The key 'server' should be an URI starting by http:// or https://";
return(false);
}
parts = uri.UserInfo.Split(':');
if (!string.IsNullOrEmpty(uri.UserInfo) && parts.Length == 2)
{
result.Username = parts[0];
result.Password = parts[1];
}
else
{
var apiToken = Take(keyValues, "api-token");
if (apiToken == null)
{
error = "The key 'api-token' is not found";
return(false);
}
result.Username = "******";
result.Password = apiToken;
}
result.BaseUri = new UriBuilder(uri)
{
UserName = "", Password = ""
}.Uri;
}
break;
case LightningConnectionType.CLightning:
{
var server = Take(keyValues, "server");
if (server == null)
{
error = $"The key 'server' is mandatory for charge connection strings";
return(false);
}
if (server.StartsWith("//", StringComparison.OrdinalIgnoreCase))
{
server = "unix:" + str;
}
else if (server.StartsWith("/", StringComparison.OrdinalIgnoreCase))
{
server = "unix:/" + str;
}
if (!Uri.TryCreate(server, UriKind.Absolute, out var uri) ||
(uri.Scheme != "tcp" && uri.Scheme != "unix"))
{
error = $"The key 'server' should be an URI starting by tcp:// or unix:// or a path to the 'lightning-rpc' unix socket";
return(false);
}
result.BaseUri = uri;
}
break;
case LightningConnectionType.LndREST:
{
var server = Take(keyValues, "server");
if (server == null)
{
error = $"The key 'server' is mandatory for lnd connection strings";
return(false);
}
if (!Uri.TryCreate(server, UriKind.Absolute, out var uri) ||
(uri.Scheme != "http" && uri.Scheme != "https"))
{
error = $"The key 'server' should be an URI starting by http:// or https://";
return(false);
}
parts = uri.UserInfo.Split(':');
if (!string.IsNullOrEmpty(uri.UserInfo) && parts.Length == 2)
{
result.Username = parts[0];
result.Password = parts[1];
}
result.BaseUri = new UriBuilder(uri)
{
UserName = "", Password = ""
}.Uri;
var macaroon = Take(keyValues, "macaroon");
if (macaroon != null)
{
try
{
result.Macaroon = Encoder.DecodeData(macaroon);
}
catch
{
error = $"The key 'macaroon' format should be in hex";
return(false);
}
}
var macaroonFilePath = Take(keyValues, "macaroonfilepath");
if (macaroonFilePath != null)
{
if (macaroon != null)
{
error = $"The key 'macaroon' is already specified";
return(false);
}
if (!macaroonFilePath.EndsWith(".macaroon", StringComparison.OrdinalIgnoreCase))
{
error = $"The key 'macaroonfilepath' should point to a .macaroon file";
return(false);
}
result.MacaroonFilePath = macaroonFilePath;
}
string securitySet = null;
var certthumbprint = Take(keyValues, "certthumbprint");
if (certthumbprint != null)
{
try
{
var bytes = Encoders.Hex.DecodeData(certthumbprint.Replace(":", string.Empty, StringComparison.OrdinalIgnoreCase));
if (bytes.Length != 32)
{
error = $"The key 'certthumbprint' has invalid length: it should be the SHA256 of the PEM format of the certificate (32 bytes)";
return(false);
}
result.CertificateThumbprint = bytes;
}
catch
{
error = $"The key 'certthumbprint' has invalid format: it should be the SHA256 of the PEM format of the certificate";
return(false);
}
securitySet = "certthumbprint";
}
var allowinsecureStr = Take(keyValues, "allowinsecure");
if (allowinsecureStr != null)
{
var allowedValues = new[] { "true", "false" };
if (!allowedValues.Any(v => v.Equals(allowinsecureStr, StringComparison.OrdinalIgnoreCase)))
{
error = $"The key 'allowinsecure' should be true or false";
return(false);
}
bool allowInsecure = allowinsecureStr.Equals("true", StringComparison.OrdinalIgnoreCase);
if (securitySet != null && allowInsecure)
{
error = $"The key 'allowinsecure' conflict with '{securitySet}'";
return(false);
}
result.AllowInsecure = allowInsecure;
}
if (!result.AllowInsecure && result.BaseUri.Scheme == "http")
{
error = $"The key 'allowinsecure' is false, but server's Uri is not using https";
return(false);
}
}
break;
default:
throw new NotSupportedException(connectionType.ToString());
}
if (keyValues.Count != 0)
{
error = $"Unknown keys ({String.Join(", ", keyValues.Select(k => k.Key).ToArray())})";
return(false);
}
connectionString = result;
return(true);
}
private static bool TryParseLegacy(string str, out LightningConnectionString connectionString, out string error)
{
if (str.StartsWith('/'))
{
str = "unix:" + str;
}
var result = new LightningConnectionString();
connectionString = null;
error = null;
Uri uri;
if (!Uri.TryCreate(str, UriKind.Absolute, out uri))
{
error = "Invalid URL";
return(false);
}
var supportedDomains = new string[] { "unix", "tcp", "http", "https" };
if (!supportedDomains.Contains(uri.Scheme))
{
var protocols = String.Join(",", supportedDomains);
error = $"The url support the following protocols {protocols}";
return(false);
}
if (uri.Scheme == "unix")
{
str = uri.AbsoluteUri.Substring("unix:".Length);
while (str.Length >= 1 && str[0] == '/')
{
str = str.Substring(1);
}
uri = new Uri("unix://" + str, UriKind.Absolute);
result.ConnectionType = LightningConnectionType.CLightning;
}
if (uri.Scheme == "tcp")
{
result.ConnectionType = LightningConnectionType.CLightning;
}
if (uri.Scheme == "http" || uri.Scheme == "https")
{
var parts = uri.UserInfo.Split(':');
if (string.IsNullOrEmpty(uri.UserInfo) || parts.Length != 2)
{
error = "The url is missing user and password";
return(false);
}
result.Username = parts[0];
result.Password = parts[1];
result.ConnectionType = LightningConnectionType.Charge;
}
else if (!string.IsNullOrEmpty(uri.UserInfo))
{
error = "The url should not have user information";
return(false);
}
result.BaseUri = new UriBuilder(uri)
{
UserName = "", Password = ""
}.Uri;
result.IsLegacy = true;
connectionString = result;
return(true);
}
public static bool TryParse(string str, bool supportLegacy, out LightningConnectionString connectionString)
{
return(TryParse(str, supportLegacy, out connectionString, out var error));
}
public LightningConnectionString Clone()
{
LightningConnectionString.TryParse(this.ToString(), false, out var result);
return(result);
}