/// <summary>
/// Asks user to open a specific port, then checks it.
/// </summary>
/// <param name="Port">TCP port to check.</param>
/// <returns>true if the port is open, false if user want to otherwise.</returns>
public bool CheckPortOpenUI(int Port)
{
log.Trace("(Port:{0})", Port);
bool res = false;
bool done = false;
while (!done)
{
CUI.WriteRich("Checking whether the TCP port <white>{0}</white> can be accessed from the Internet by connecting to <white>{1}:{0}</white>... ", Port, GeneralConfiguration.ExternalIpAddress);
if (CheckPortOpen(Port))
{
res = true;
break;
}
CUI.WriteRich("TCP port <white>{0}</white> is not open or an error occurred. How would you like to proceed? [<white>C</white>HECK AGAIN / <white>s</white>elect different port] ", Port, GeneralConfiguration.ExternalIpAddress);
done = CUI.ReadKeyAnswer(new char[] { 'c', 's' }) == 's';
}
CUI.WriteLine();
log.Trace("(-):{0}", res);
return(res);
}
/// <summary>
/// Asks user to input a TCP port number and verifies that it is an open port.
/// </summary>
/// <param name="RichMessage">Message to print on the console.</param>
/// <param name="DefaultValue">Default value for the port.</param>
/// <param name="ServiceName">Name of the service this port will be used by.</param>
/// <param name="AllowCancel">Allow user to cancel port selection.</param>
/// <returns>Selected port value that is open from outside.</returns>
public int AskForOpenPort(string RichMessage, int DefaultValue, string ServiceName, bool AllowCancel = false)
{
log.Trace("(DefaultValue:{0},ServiceName:'{1}',AllowCancel:{2})", DefaultValue, ServiceName, AllowCancel);
int res = 0;
bool done = false;
while (!done)
{
CUI.WriteRich(RichMessage);
string answer = CUI.ReadStringAnswer(DefaultValue.ToString());
int port;
if (int.TryParse(answer, out port) && (0 < port) && (port <= 65535))
{
if (!GeneralConfiguration.UsedPorts.ContainsKey(port))
{
if (CheckPortOpenUI(port))
{
GeneralConfiguration.UsedPorts[port] = ServiceName;
res = port;
done = true;
}
else
{
log.Warn("Port {0} is not open.", port);
}
}
else
{
log.Error("Port {0} is already used for '{1}'.", port, GeneralConfiguration.UsedPorts[port]);
CUI.WriteRich("<red>ERROR:</red> Port <white>{0}</white> is already used by <white>{1}</white>. Please try different port.\n", port, GeneralConfiguration.UsedPorts[port]);
}
}
else if (AllowCancel && (answer == "0"))
{
log.Debug("Port selection cancelled.");
done = true;
}
else
{
log.Error("Invalid port number entered '{0}'.", answer);
CUI.WriteRich("<red>ERROR:</red> <white>'{0}'</white> is not a valid port number. It has to be an integer between 1 and 65535. Please try again.\n", answer);
}
}
log.Trace("(-):{0}", res);
return(res);
}
/// <summary>
/// Installs all installation files of the component.
/// </summary>
/// <returns>true if the function succeeds, false otherwise.</returns>
public virtual bool Install()
{
log.Trace("()");
bool res = false;
Status = InstallableComponentStatus.InstallationInitiated;
bool error = false;
installationFiles = GetInstallationFiles();
foreach (InstallationFile instFile in installationFiles)
{
log.Info("Installing '{0}'.", instFile.Name);
CUI.WriteRich("Installing module <white>{0}</white>.\n", instFile.Name);
if (!instFile.Install())
{
log.Error("Installation of '{0}' failed.", instFile.Name);
error = true;
break;
}
}
if (!error)
{
Status |= InstallableComponentStatus.InstallationCompleted;
res = true;
}
else
{
// Cleanup.
foreach (InstallationFile instFile in installationFiles)
{
if (instFile.Status != InstallationFileStatus.None)
{
log.Info("Uninstalling '{0}'.", instFile.Name);
instFile.Uninstall();
}
}
}
log.Trace("(-):{0}", res);
return(res);
}
/// <summary>
/// Installs init.d script on Linux from script template file.
/// </summary>
/// <param name="TemplateFile">Name of the template file, which is also a name of the init.d script.</param>
/// <param name="Replacements">List of template replacements mapped by the patterns to replace.</param>
/// <param name="UpdateRcdInstallArgs">Arguments for update-rc.d command for script installation.</param>
/// <returns>true if the function succeeds, false otherwise.</returns>
public static bool InstallInitdScript(string TemplateFile, Dictionary <string, string> Replacements, string UpdateRcdInstallArgs)
{
log.Trace("(TemplateFile:'{0}',UpdateRcdInstallArgs:'{1}')", TemplateFile, UpdateRcdInstallArgs);
bool res = false;
CUI.WriteRich("Creating init.d script <white>{0}</white>... ", TemplateFile);
bool error = true;
string content = null;
string initdScript = Path.Combine("init.d", TemplateFile);
string destFile = string.Format("/etc/init.d/{0}", TemplateFile);
try
{
content = File.ReadAllText(initdScript);
foreach (KeyValuePair <string, string> kvp in Replacements)
{
content = content.Replace(kvp.Key, kvp.Value);
}
File.WriteAllText(destFile, content);
if (Chmod(destFile, "a+x"))
{
CUI.WriteOk();
error = false;
}
else
{
log.Error("chmod on '{0}' failed.", destFile);
CUI.WriteFailed();
CUI.Write("<red>ERROR:</red> Unable to set access rights of file <white>{0}</white>.\n", initdScript);
}
}
catch (Exception e)
{
log.Error("Exception occurred: {0}", e.ToString());
CUI.WriteFailed();
if (content == null)
{
CUI.Write("<red>ERROR:</red> Unable to read file <white>{0}</white>: {1}\n", initdScript, e.Message);
}
else
{
CUI.Write("<red>ERROR:</red> Unable to write to file <white>{0}</white>: {1}\n", destFile, e.Message);
}
}
if (!error)
{
CUI.WriteRich("Installing init script links for <white>{0}</white>... ", TemplateFile);
if (UpdateRcdInstall(TemplateFile, UpdateRcdInstallArgs))
{
CUI.WriteOk();
res = true;
}
else
{
log.Error("update-rc.d failed for '{0}'.", TemplateFile);
CUI.WriteFailed();
}
}
log.Trace("(-):{0}", res);
return(res);
}
/// <summary>
/// Asks user to input a name of an empty or non-existing directory.
/// </summary>
/// <param name="RichMessage">Message to print on the console.</param>
/// <param name="DefaultValue">Default value for the directory name.</param>
/// <returns>Selected directory name that is empty.</returns>
public static string AskForEmptyDirectory(string RichMessage, string DefaultValue)
{
log.Trace("(DefaultValue:'{0}')", DefaultValue);
string res = "";
bool done = false;
while (!done)
{
CUI.WriteRich(RichMessage);
string answer = CUI.ReadStringAnswer(DefaultValue);
string existingDir;
if (FindDirectory(answer, out existingDir))
{
if (IsEmptyDirectory(existingDir))
{
res = existingDir;
done = true;
}
else
{
CUI.WriteRich("\n<yellow>Directory '{0}' is not empty.</yellow> Do you want to erase its contents or select another directory? [<white>S</white>ELECT ANOTHER / <white>e</white>rase contents] ", existingDir);
bool eraseDirectory = CUI.ReadKeyAnswer(new char[] { 's', 'e' }) == 'e';
if (eraseDirectory)
{
CUI.WriteRich("Erasing directory <white>'{0}'</white>... ", existingDir);
if (CleanDirectory(existingDir))
{
CUI.WriteOk();
res = existingDir;
done = true;
}
else
{
CUI.WriteFailed();
CUI.WriteRich("\n<red>ERROR:</red> Unable to erase contents of directory <white>'{0}'</white>. Please select different directory.\n", existingDir);
}
}
}
}
else
{
existingDir = CreateDirectory(answer);
if (existingDir != null)
{
res = existingDir;
done = true;
}
else
{
CUI.WriteRich("\n<red>ERROR:</red> Unable to create directory <white>'{0}'</white>. Please try again.\n", answer);
}
}
}
CUI.WriteLine();
log.Trace("(-):'{0}'", res);
return(res);
}
/// <summary>
/// Tries to listen on a specific port and asks seed node to connect to it.
/// </summary>
/// <param name="Port">TCP port to check.</param>
/// <returns>true if the port is open, false otherwise.</returns>
public bool CheckPortOpen(int Port)
{
log.Trace("(Port:{0})", Port);
bool res = false;
if (Program.TestMode)
{
if (Port > 50000)
{
CUI.WriteOk();
res = true;
log.Trace("(-)[TEST_MODE_ENABLED]:{0}", res);
return(res);
}
}
try
{
portListenerThreadShutdownEvent.Reset();
Thread portListenerThread = new Thread(new ParameterizedThreadStart(PortListenerThread));
portListenerThread.Start(Port);
if (portListenerReadyEvent.WaitOne(5000))
{
res = GeneralConfiguration.CheckPort(GeneralConfiguration.ExternalIpAddress, Port);
if (res)
{
CUI.WriteOk();
}
else
{
CUI.WriteFailed();
}
}
else
{
log.Error("Port listener thread did not get ready on time.");
CUI.WriteFailed();
CUI.WriteRich("<red>ERROR:</red> Unexpected error occurred, please try again.\n");
}
portListenerThreadShutdownEvent.Set();
if (!portListenerThread.Join(10000))
{
log.Error("Port listener thread failed to finish on time.");
}
}
catch (Exception e)
{
log.Error("Exception occurred: {0}", e.ToString());
CUI.WriteFailed();
CUI.WriteRich("<red>ERROR:</red> Exception occurred: {0}\n", e.Message);
}
log.Trace("(-):{0}", res);
return(res);
}