forked from I2P_Developers/i2p.i2p
2005-01-23 smeghead
* Port the java SAM client library to mono/C# and released into the
public domain. The 0.1 version of this port is available in CVS as
i2p/apps/sam/csharp/src/I2P.SAM.Client. The other nonfunctional C#
library has been removed.
This commit is contained in:
jrandom
259
apps/sam/csharp/src/I2P.SAM.Client/SamReader.cs
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259
apps/sam/csharp/src/I2P.SAM.Client/SamReader.cs
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using System;
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using System.Collections;
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using System.Collections.Specialized;
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using System.IO;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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namespace I2P.SAM.Client
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{
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/// <summary>
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/// Read from a socket, producing events for any SAM message read.
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/// </summary>
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public class SamReader
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{
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private bool _isLive;
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private SamClientEventListener _listener;
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private NetworkStream _samStream;
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private StreamReader _streamReader;
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public SamReader(NetworkStream samStream, SamClientEventListener listener) {
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_samStream = samStream;
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_listener = listener;
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}
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public void RunThread() {
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NameValueCollection parameters = new NameValueCollection();
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while (_isLive) {
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string line = null;
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_streamReader = new StreamReader(_samStream);
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try {
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line = _streamReader.ReadLine();
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_streamReader.Close();
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} catch (IOException ioe) {
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Console.Error.WriteLine("Error reading from SAM: {1}", ioe);
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} catch (OutOfMemoryException oome) {
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Console.Error.WriteLine("Out of memory while reading from SAM: {1}", oome);
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return;
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}
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if (line == null) {
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break;
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}
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string[] tokens = line.Split(new char[1] { ' ' });
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if (tokens.Length < 2) {
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Console.Error.WriteLine("Invalid SAM line: [" + line + "]");
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_isLive = false;
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return;
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}
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IEnumerator tokensEnumerator = tokens.GetEnumerator();
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tokensEnumerator.MoveNext();
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string major = (string) tokensEnumerator.Current;
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tokensEnumerator.MoveNext();
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string minor = (string) tokensEnumerator.Current;
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parameters.Clear();
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while (tokensEnumerator.MoveNext()) {
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string pair = (string) tokensEnumerator.Current;
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int equalsPosition = pair.IndexOf('=');
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if ( (equalsPosition > 0) && (equalsPosition < pair.Length - 1) ) {
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string name = pair.Substring(0, equalsPosition);
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string valueString = pair.Substring(equalsPosition + 1);
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while ( (valueString[0] == '\"') && (valueString.Length > 0) )
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valueString = valueString.Substring(1);
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while ( (valueString.Length > 0) && (valueString[valueString.Length - 1] == '\"') )
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valueString = valueString.Substring(0, valueString.Length - 1);
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parameters.Set(name, valueString);
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}
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}
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ProcessEvent(major, minor, parameters);
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}
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}
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private void ProcessEvent(string major, string minor, NameValueCollection parameters) {
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switch (major)
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{
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case "HELLO" :
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if (minor.Equals("REPLY")) {
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string result = parameters.Get("RESULT");
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if (result.Equals("OK"))
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_listener.HelloReplyReceived(true);
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else
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_listener.HelloReplyReceived(false);
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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break;
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case "SESSION" :
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if (minor.Equals("STATUS")) {
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string result = parameters.Get("RESULT");
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string destination = parameters.Get("DESTINATION");
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string message = parameters.Get("MESSAGE");
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_listener.SessionStatusReceived(result, destination, message);
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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break;
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case "STREAM" :
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ProcessStream(major, minor, parameters);
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break;
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case "NAMING" :
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if (minor.Equals("REPLY")) {
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string name = parameters.Get("NAME");
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string result = parameters.Get("RESULT");
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string valueString = parameters.Get("VALUE");
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string message = parameters.Get("MESSAGE");
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_listener.NamingReplyReceived(name, result, valueString, message);
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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break;
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case "DEST" :
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if (minor.Equals("REPLY")) {
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string pub = parameters.Get("PUB");
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string priv = parameters.Get("PRIV");
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_listener.DestReplyReceived(pub, priv);
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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break;
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default :
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_listener.UnknownMessageReceived(major, minor, parameters);
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break;
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}
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}
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private void ProcessStream(string major, string minor, NameValueCollection parameters) {
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/*
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* Would use another tidy switch() statement here but the Mono
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* compiler presently gets variable scopes confused within nested
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* switch() contexts. Broken with Mono/mcs 1.0.5, 1.1.3, and SVN
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* head.
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*/
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if (minor.Equals("STATUS")) {
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string result = parameters.Get("RESULT");
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string id = parameters.Get("ID");
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string message = parameters.Get("MESSAGE");
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try {
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_listener.StreamStatusReceived(result, Int32.Parse(id), message);
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} catch {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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} else if (minor.Equals("CONNECTED")) {
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string destination = parameters.Get("DESTINATION");
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string id = parameters.Get("ID");
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try {
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_listener.StreamConnectedReceived(destination, Int32.Parse(id));
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} catch {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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} else if (minor.Equals("CLOSED")) {
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string result = parameters.Get("RESULT");
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string id = parameters.Get("ID");
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string message = parameters.Get("MESSAGE");
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try {
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_listener.StreamClosedReceived(result, Int32.Parse(id), message);
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} catch {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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} else if (minor.Equals("RECEIVED")) {
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string id = parameters.Get("ID");
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string size = parameters.Get("SIZE");
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if (id != null) {
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try {
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int idValue = Int32.Parse(id);
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int sizeValue = Int32.Parse(size);
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byte[] data = new byte[sizeValue];
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int bytesRead;
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try {
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bytesRead = _samStream.Read(data, 0, sizeValue);
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if (bytesRead != sizeValue) {
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_listener.UnknownMessageReceived(major, minor, parameters);
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return;
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}
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} catch {
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_isLive = false;
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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_listener.StreamDataReceived(idValue, data, 0, sizeValue);
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} catch (FormatException fe) {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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} else {
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_listener.UnknownMessageReceived(major, minor, parameters);
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}
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}
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public void StartReading() {
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_isLive = true;
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ThreadStart threadStart = new ThreadStart(RunThread);
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Thread thread = new Thread(threadStart);
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thread.Name = "SAM Reader";
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thread.Start();
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}
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public void StopReading() {
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_isLive = false;
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}
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}
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}
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