public static void AddJob(JobInfo info)
{
Logger.DebugFormat("adding print job {0}", info.JobID);
lock (ManagementLock)
{
JobDictionary[info.JobID] = info;
WriteJobs();
}
}
static void Main(string[] args)
{
// parse args
if (args.Length < 4 || args.Length > 6)
{
UsageAndExit();
}
var pseudoUri = new Uri(string.Format("lpd://{0}", args[0]));
var host = pseudoUri.Host;
var port = 515;
if (!pseudoUri.IsDefaultPort)
{
port = pseudoUri.Port;
}
var queue = args[1];
var user = args[2];
var localFilename = args[3];
var remoteFilename = (args.Length > 4) ? args[4] : Path.GetFileName(localFilename);
var localHostname = (args.Length > 5) ? args[5] : System.Net.Dns.GetHostName().Split('.')[0];
// sanity check
var fileInfo = new FileInfo(localFilename);
if (!fileInfo.Exists)
{
Console.Error.WriteLine("Local file '{0}' does not exist!", localFilename);
UsageAndExit();
}
var fileSize = fileInfo.Length;
// prepare the JobInfo
var jobInfo = new JobInfo
{
DataFilePath = localFilename,
DataFileSize = fileSize,
DocumentName = remoteFilename,
HostName = localHostname,
Status = JobInfo.JobStatus.ReadyToPrint,
TimeOfArrival = DateTimeOffset.Now,
UserName = user
};
// prepare the sender
var sender = new LpdSender
{
Host = host,
Port = port,
QueueName = queue
};
sender.Send(jobInfo);
Console.WriteLine("Job sent.");
}
public void Send(JobInfo job)
{
Logger.InfoFormat("sending job {0} to {1}", job.JobID, Host);
Logger.DebugFormat("connecting to {0}", Host);
var client = new TcpClient();
client.Connect(Host, Port);
var stream = client.GetStream();
var message = new List<byte>();
int thisJobNumber = IncrementJobCounter();
var dataFileName = string.Format("dfA{0:D3}{1}", thisJobNumber, job.HostName);
var controlFileName = string.Format("cfA{0:D3}{1}", thisJobNumber, job.HostName);
Logger.DebugFormat("LpdSender job number is {0}; control file name is '{1}' and data file name is '{2}'", Host, controlFileName, dataFileName);
Logger.Debug("initiating the print request");
message.Add(0x02);
message.AddRange(Encoding.ASCII.GetBytes(QueueName));
message.Add(0x0A);
stream.Write(message.ToArray(), 0, message.Count);
message.Clear();
// read ACK
int b = stream.ReadByte();
if (b != 0x00)
{
Logger.WarnFormat("got 0x{0:X2} after initiating the print request", b);
throw new BadResponseException("creating a new print job", b);
}
Logger.Debug("preparing the control file");
var controlFile = new StringBuilder();
controlFile.AppendFormat("H{0}\n", job.HostName);
controlFile.AppendFormat("P{0}\n", job.UserName);
controlFile.AppendFormat("J{0}\n", job.DocumentName);
controlFile.AppendFormat("l{0}\n", dataFileName);
controlFile.AppendFormat("U{0}\n", dataFileName);
controlFile.AppendFormat("N{0}\n", job.DocumentName);
var controlFileBytes = Encoding.Default.GetBytes(controlFile.ToString());
// send the control file metadata
Logger.Debug("sending the control file metadata");
message.Add(0x02);
message.AddRange(Encoding.ASCII.GetBytes(controlFileBytes.Length.ToString(CultureInfo.InvariantCulture)));
message.Add(0x20);
message.AddRange(Encoding.ASCII.GetBytes(controlFileName));
message.Add(0x0A);
stream.Write(message.ToArray(), 0, message.Count);
message.Clear();
// read ACK
b = stream.ReadByte();
if (b != 0x00)
{
Logger.WarnFormat("got 0x{0:X2} after sending the control file metadata", b);
throw new BadResponseException("preparing to send control data", b);
}
Logger.Debug("sending the control file data");
stream.Write(controlFileBytes, 0, controlFileBytes.Length);
stream.WriteByte(0x00);
// read ACK
b = stream.ReadByte();
if (b != 0x00)
{
Logger.WarnFormat("got 0x{0:X2} after sending the control file data", b);
throw new BadResponseException("sending control data", b);
}
Logger.Debug("sending the data file metadata");
message.Add(0x03);
message.AddRange(Encoding.ASCII.GetBytes(job.DataFileSize.ToString(CultureInfo.InvariantCulture)));
message.Add(0x20);
message.AddRange(Encoding.ASCII.GetBytes(dataFileName));
message.Add(0x0A);
stream.Write(message.ToArray(), 0, message.Count);
message.Clear();
// read ACK
b = stream.ReadByte();
if (b != 0x00)
{
Logger.WarnFormat("got 0x{0:X2} after sending the data file metadata", b);
throw new BadResponseException("preparing to send data", b);
}
Logger.Debug("sending the data file data");
using (var inStream = new FileStream(job.DataFilePath, FileMode.Open, FileAccess.Read))
{
Util.CopyStream(inStream, stream, job.DataFileSize);
}
stream.WriteByte(0x00);
// read ACK
b = stream.ReadByte();
if (b != 0x00)
{
Logger.WarnFormat("got 0x{0:X2} after sending the data file data", b);
throw new BadResponseException("sending data", b);
}
// close
Logger.Debug("job sent");
client.Close();
}
public JobInfoDrop(JobInfo info)
{
Info = info;
if (info.DataFileSize < 1024L)
{
SizeString = info.DataFileSize + " B";
}
else if (info.DataFileSize < 1024L * 1024L)
{
SizeString = (info.DataFileSize / 1024L) + " KB";
}
else if (info.DataFileSize < 1024L * 1024L * 1024L)
{
SizeString = (info.DataFileSize / (1024L * 1024L)) + " MB";
}
else if (info.DataFileSize < 1024L * 1024L * 1024L * 1024L)
{
SizeString = (info.DataFileSize / (1024L * 1024L * 1024L)) + " GB";
}
else
{
SizeString = (info.DataFileSize / (1024L * 1024L * 1024L * 1024L)) + " TB";
}
}
private void HandleJobSubmission(NetworkStream stream)
{
var jobFiles = new Dictionary<string, byte[]>();
var jobFileReferences = new Dictionary<string, string>();
var jobFileLengths = new Dictionary<string, long>();
string controlFileName = null;
// create a new job, reserving a new job ID
var jobInfo = new JobInfo();
for (; ; )
{
byte[] command;
try
{
command = ReadUntilLineFeed(stream);
}
catch (EndOfStreamException)
{
// it's over!
break;
}
switch (command[0])
{
case (byte)JobCommandCode.AbortJob:
{
ReturnSuccess(stream);
Logger.Debug("Received: abort current job");
// nothing left to do here
return;
}
case (byte)JobCommandCode.ReceiveControlFile:
{
var controlFileDataString = GetSingleStringArgument(command);
var controlFileData = WhiteSpacePattern.Split(controlFileDataString, 2);
if (controlFileData.Length != 2)
{
Logger.WarnFormat("'receive control file' command '{0}' not in format 'length filename'", controlFileDataString);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("invalid syntax");
}
var length = int.Parse(controlFileData[0]);
controlFileName = controlFileData[1];
Logger.DebugFormat("Received: receive {0} bytes of control file named {1}", length, controlFileName);
// parse the name
var controlFileNameMatch = ControlFileNamePattern.Match(controlFileName);
if (!controlFileNameMatch.Success)
{
Logger.WarnFormat("'receive control file' filename '{0}' has invalid format", controlFileName);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("control file name doesn't match expected pattern");
}
// signal that we parsed the command successfully
ReturnSuccess(stream);
var controlBytes = ReadBytes(length, stream);
// store the control file
jobFiles[controlFileName] = controlBytes;
// read the last byte
var b = stream.ReadByte();
if (b == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
Logger.Warn("'receive control file' control file contents not succeeded by NUL");
ReturnInvalidSyntax(stream);
throw new InvalidDataException("control file not succeeded by NUL");
}
break;
}
case (byte)JobCommandCode.ReceiveDataFile:
{
var dataFileDataString = GetSingleStringArgument(command);
var dataFileData = WhiteSpacePattern.Split(dataFileDataString, 2);
if (dataFileData.Length != 2)
{
Logger.WarnFormat("'receive data file' command '{0}' not in format 'length filename'", dataFileDataString);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("invalid syntax");
}
var length = int.Parse(dataFileData[0]);
var lpdDataFileName = dataFileData[1];
Logger.DebugFormat("Received: receive {0} bytes of data file named {1}", length, lpdDataFileName);
// parse the name
var dataFileNameMatch = DataFileNamePattern.Match(lpdDataFileName);
if (!dataFileNameMatch.Success)
{
Logger.WarnFormat("'receive data file' filename '{0}' has invalid format", lpdDataFileName);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("data file name doesn't match expected pattern");
}
// must send this so that the client responds
ReturnSuccess(stream);
var outFileName = Path.Combine(Config.JobDirectory, GetJobDataFilename(jobInfo.JobID, lpdDataFileName));
using (var outStream = new FileStream(outFileName, FileMode.CreateNew, FileAccess.Write))
{
long? copyLength = (length == 0) ? null : (long?)length;
long actualLength = Util.CopyStream(stream, outStream, copyLength);
jobFileReferences[lpdDataFileName] = outFileName;
jobFileLengths[lpdDataFileName] = actualLength;
}
if (length == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
// read the last byte
var b = stream.ReadByte();
if (b == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
Logger.Warn("'receive data file' data file contents not succeeded by NUL");
ReturnInvalidSyntax(stream);
throw new InvalidDataException("data file not succeeded by NUL");
}
}
break;
}
}
}
// decode the control file
string controlString;
try
{
controlString = Utf8Encoding.GetString(jobFiles[controlFileName]);
}
catch (DecoderFallbackException)
{
controlString = Encoding.Default.GetString(jobFiles[controlFileName]);
}
// parse it, with all the magic
try
{
jobInfo = ParseJobInfo(jobInfo, controlString, jobFileReferences, jobFileLengths);
}
catch (FormatException)
{
ReturnUnsupportedPrintType(stream);
return;
}
OnNewJobReceived(jobInfo);
}
protected virtual void OnNewJobReceived(JobInfo job)
{
if (NewJobReceived != null)
{
NewJobReceived(this, job);
}
}
protected static JobInfo ParseJobInfo(JobInfo jobInfo, string jobInfoString, Dictionary<string, string> dataFilePaths, Dictionary<string, long> dataFileSizes)
{
jobInfo.Status = JobInfo.JobStatus.ReadyToPrint;
jobInfo.TimeOfArrival = DateTimeOffset.UtcNow;
foreach (var line in jobInfoString.Split('\n'))
{
if (line.Length < 2)
{
continue;
}
var letter = line[0];
var param = line.Substring(1);
switch (letter)
{
case (char)ControlFileCharacters.HostName:
jobInfo.HostName = param;
break;
case (char)ControlFileCharacters.UserIdentification:
jobInfo.UserName = param;
break;
case (char)ControlFileCharacters.JobName:
jobInfo.DocumentName = param;
break;
case (char)ControlFileCharacters.NameOfSourceFile:
jobInfo.DocumentName = param;
break;
case (char)ControlFileCharacters.PrintFileWithControlCharacters:
jobInfo.DataFilePath = dataFilePaths[param];
jobInfo.DataFileSize = dataFileSizes[param];
break;
case (char)ControlFileCharacters.UnlinkDataFile:
dataFilePaths.Remove(param);
dataFileSizes.Remove(param);
break;
case (char)ControlFileCharacters.PlotCifFile:
case (char)ControlFileCharacters.PrintDviFile:
case (char)ControlFileCharacters.PrintFormattedFile:
case (char)ControlFileCharacters.PlotBerkeleyFile:
case (char)ControlFileCharacters.PrintDitroffOutput:
case (char)ControlFileCharacters.PrintPostscript:
case (char)ControlFileCharacters.PrintFortranCarriageControlFile:
case (char)ControlFileCharacters.PrintTroffOutput:
case (char)ControlFileCharacters.PrintRasterFile:
Logger.WarnFormat("requested printing in unsupported format '{0}'", letter);
throw new FormatException("cannot print this format");
default:
// ignore it...
Logger.WarnFormat("ignoring unknown LPD command file command '{0}'", letter);
break;
}
}
return jobInfo;
}
private void HandleJobSubmission(NetworkStream stream)
{
var jobFiles = new Dictionary <string, byte[]>();
var jobFileReferences = new Dictionary <string, string>();
var jobFileLengths = new Dictionary <string, long>();
string controlFileName = null;
// create a new job, reserving a new job ID
var jobInfo = new JobInfo();
for (; ;)
{
byte[] command;
try
{
command = ReadUntilLineFeed(stream);
}
catch (EndOfStreamException)
{
// it's over!
break;
}
switch (command[0])
{
case (byte)JobCommandCode.AbortJob:
{
ReturnSuccess(stream);
Logger.Debug("Received: abort current job");
// nothing left to do here
return;
}
case (byte)JobCommandCode.ReceiveControlFile:
{
var controlFileDataString = GetSingleStringArgument(command);
var controlFileData = WhiteSpacePattern.Split(controlFileDataString, 2);
if (controlFileData.Length != 2)
{
Logger.WarnFormat("'receive control file' command '{0}' not in format 'length filename'", controlFileDataString);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("invalid syntax");
}
var length = int.Parse(controlFileData[0]);
controlFileName = controlFileData[1];
Logger.DebugFormat("Received: receive {0} bytes of control file named {1}", length, controlFileName);
// parse the name
var controlFileNameMatch = ControlFileNamePattern.Match(controlFileName);
if (!controlFileNameMatch.Success)
{
Logger.WarnFormat("'receive control file' filename '{0}' has invalid format", controlFileName);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("control file name doesn't match expected pattern");
}
// signal that we parsed the command successfully
ReturnSuccess(stream);
var controlBytes = ReadBytes(length, stream);
// store the control file
jobFiles[controlFileName] = controlBytes;
// read the last byte
var b = stream.ReadByte();
if (b == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
Logger.Warn("'receive control file' control file contents not succeeded by NUL");
ReturnInvalidSyntax(stream);
throw new InvalidDataException("control file not succeeded by NUL");
}
break;
}
case (byte)JobCommandCode.ReceiveDataFile:
{
var dataFileDataString = GetSingleStringArgument(command);
var dataFileData = WhiteSpacePattern.Split(dataFileDataString, 2);
if (dataFileData.Length != 2)
{
Logger.WarnFormat("'receive data file' command '{0}' not in format 'length filename'", dataFileDataString);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("invalid syntax");
}
var length = int.Parse(dataFileData[0]);
var lpdDataFileName = dataFileData[1];
Logger.DebugFormat("Received: receive {0} bytes of data file named {1}", length, lpdDataFileName);
// parse the name
var dataFileNameMatch = DataFileNamePattern.Match(lpdDataFileName);
if (!dataFileNameMatch.Success)
{
Logger.WarnFormat("'receive data file' filename '{0}' has invalid format", lpdDataFileName);
ReturnInvalidSyntax(stream);
throw new InvalidDataException("data file name doesn't match expected pattern");
}
// must send this so that the client responds
ReturnSuccess(stream);
var outFileName = Path.Combine(Config.JobDirectory, GetJobDataFilename(jobInfo.JobID, lpdDataFileName));
using (var outStream = new FileStream(outFileName, FileMode.CreateNew, FileAccess.Write))
{
long?copyLength = (length == 0) ? null : (long?)length;
long actualLength = Util.CopyStream(stream, outStream, copyLength);
jobFileReferences[lpdDataFileName] = outFileName;
jobFileLengths[lpdDataFileName] = actualLength;
}
if (length == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
// read the last byte
var b = stream.ReadByte();
if (b == 0)
{
// "thanks!"
ReturnSuccess(stream);
}
else
{
Logger.Warn("'receive data file' data file contents not succeeded by NUL");
ReturnInvalidSyntax(stream);
throw new InvalidDataException("data file not succeeded by NUL");
}
}
break;
}
}
}
// decode the control file
string controlString;
try
{
controlString = Utf8Encoding.GetString(jobFiles[controlFileName]);
}
catch (DecoderFallbackException)
{
controlString = Encoding.Default.GetString(jobFiles[controlFileName]);
}
// parse it, with all the magic
try
{
jobInfo = ParseJobInfo(jobInfo, controlString, jobFileReferences, jobFileLengths);
}
catch (FormatException)
{
ReturnUnsupportedPrintType(stream);
return;
}
OnNewJobReceived(jobInfo);
}
protected static JobInfo ParseJobInfo(JobInfo jobInfo, string jobInfoString, Dictionary <string, string> dataFilePaths, Dictionary <string, long> dataFileSizes)
{
jobInfo.Status = JobInfo.JobStatus.ReadyToPrint;
jobInfo.TimeOfArrival = DateTimeOffset.UtcNow;
foreach (var line in jobInfoString.Split('\n'))
{
if (line.Length < 2)
{
continue;
}
var letter = line[0];
var param = line.Substring(1);
switch (letter)
{
case (char)ControlFileCharacters.HostName:
jobInfo.HostName = param;
break;
case (char)ControlFileCharacters.UserIdentification:
jobInfo.UserName = param;
break;
case (char)ControlFileCharacters.JobName:
jobInfo.DocumentName = param;
break;
case (char)ControlFileCharacters.NameOfSourceFile:
jobInfo.DocumentName = param;
break;
case (char)ControlFileCharacters.PrintFileWithControlCharacters:
jobInfo.DataFilePath = dataFilePaths[param];
jobInfo.DataFileSize = dataFileSizes[param];
break;
case (char)ControlFileCharacters.UnlinkDataFile:
dataFilePaths.Remove(param);
dataFileSizes.Remove(param);
break;
case (char)ControlFileCharacters.PlotCifFile:
case (char)ControlFileCharacters.PrintDviFile:
case (char)ControlFileCharacters.PrintFormattedFile:
case (char)ControlFileCharacters.PlotBerkeleyFile:
case (char)ControlFileCharacters.PrintDitroffOutput:
case (char)ControlFileCharacters.PrintPostscript:
case (char)ControlFileCharacters.PrintFortranCarriageControlFile:
case (char)ControlFileCharacters.PrintTroffOutput:
case (char)ControlFileCharacters.PrintRasterFile:
Logger.WarnFormat("requested printing in unsupported format '{0}'", letter);
throw new FormatException("cannot print this format");
default:
// ignore it...
Logger.WarnFormat("ignoring unknown LPD command file command '{0}'", letter);
break;
}
}
return(jobInfo);
}
