diff options
Diffstat (limited to 'lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java')
| -rw-r--r-- | lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java | 250 |
1 files changed, 125 insertions, 125 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java b/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java index 23726f3..d7a5ee5 100644 --- a/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java +++ b/lib/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java @@ -1,125 +1,125 @@ -
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.UnsupportedEncodingException;
-
-import com.trilead.ssh2.Connection;
-
-/**
- * ClientServerHello.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class ClientServerHello
-{
- String server_line;
- String client_line;
-
- String server_versioncomment;
-
- public final static int readLineRN(InputStream is, byte[] buffer) throws IOException
- {
- int pos = 0;
- boolean need10 = false;
- int len = 0;
- while (true)
- {
- int c = is.read();
- if (c == -1)
- throw new IOException("Premature connection close");
-
- buffer[pos++] = (byte) c;
-
- if (c == 13)
- {
- need10 = true;
- continue;
- }
-
- if (c == 10)
- break;
-
- if (need10 == true)
- throw new IOException("Malformed line sent by the server, the line does not end correctly.");
-
- len++;
- if (pos >= buffer.length)
- throw new IOException("The server sent a too long line.");
- }
-
- return len;
- }
-
- public ClientServerHello(InputStream bi, OutputStream bo) throws IOException
- {
- client_line = "SSH-2.0-" + Connection.identification;
-
- bo.write((client_line + "\r\n").getBytes("ISO-8859-1"));
- bo.flush();
-
- byte[] serverVersion = new byte[512];
-
- for (int i = 0; i < 50; i++)
- {
- int len = readLineRN(bi, serverVersion);
-
- server_line = new String(serverVersion, 0, len, "ISO-8859-1");
-
- if (server_line.startsWith("SSH-"))
- break;
- }
-
- if (server_line.startsWith("SSH-") == false)
- throw new IOException(
- "Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines.");
-
- if (server_line.startsWith("SSH-1.99-"))
- server_versioncomment = server_line.substring(9);
- else if (server_line.startsWith("SSH-2.0-"))
- server_versioncomment = server_line.substring(8);
- else
- throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible.");
- }
-
- /**
- * @return Returns the client_versioncomment.
- */
- public byte[] getClientString()
- {
- byte[] result;
-
- try
- {
- result = client_line.getBytes("ISO-8859-1");
- }
- catch (UnsupportedEncodingException ign)
- {
- result = client_line.getBytes();
- }
-
- return result;
- }
-
- /**
- * @return Returns the server_versioncomment.
- */
- public byte[] getServerString()
- {
- byte[] result;
-
- try
- {
- result = server_line.getBytes("ISO-8859-1");
- }
- catch (UnsupportedEncodingException ign)
- {
- result = server_line.getBytes();
- }
-
- return result;
- }
-}
+ +package com.trilead.ssh2.transport; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; + +import com.trilead.ssh2.Connection; + +/** + * ClientServerHello. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ + */ +public class ClientServerHello +{ + String server_line; + String client_line; + + String server_versioncomment; + + public final static int readLineRN(InputStream is, byte[] buffer) throws IOException + { + int pos = 0; + boolean need10 = false; + int len = 0; + while (true) + { + int c = is.read(); + if (c == -1) + throw new IOException("Premature connection close"); + + buffer[pos++] = (byte) c; + + if (c == 13) + { + need10 = true; + continue; + } + + if (c == 10) + break; + + if (need10 == true) + throw new IOException("Malformed line sent by the server, the line does not end correctly."); + + len++; + if (pos >= buffer.length) + throw new IOException("The server sent a too long line."); + } + + return len; + } + + public ClientServerHello(InputStream bi, OutputStream bo) throws IOException + { + client_line = "SSH-2.0-" + Connection.identification; + + bo.write((client_line + "\r\n").getBytes("ISO-8859-1")); + bo.flush(); + + byte[] serverVersion = new byte[512]; + + for (int i = 0; i < 50; i++) + { + int len = readLineRN(bi, serverVersion); + + server_line = new String(serverVersion, 0, len, "ISO-8859-1"); + + if (server_line.startsWith("SSH-")) + break; + } + + if (server_line.startsWith("SSH-") == false) + throw new IOException( + "Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines."); + + if (server_line.startsWith("SSH-1.99-")) + server_versioncomment = server_line.substring(9); + else if (server_line.startsWith("SSH-2.0-")) + server_versioncomment = server_line.substring(8); + else + throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible."); + } + + /** + * @return Returns the client_versioncomment. + */ + public byte[] getClientString() + { + byte[] result; + + try + { + result = client_line.getBytes("ISO-8859-1"); + } + catch (UnsupportedEncodingException ign) + { + result = client_line.getBytes(); + } + + return result; + } + + /** + * @return Returns the server_versioncomment. + */ + public byte[] getServerString() + { + byte[] result; + + try + { + result = server_line.getBytes("ISO-8859-1"); + } + catch (UnsupportedEncodingException ign) + { + result = server_line.getBytes(); + } + + return result; + } +} |