realpath throws Exc. with id=0 msg=Success

[Anonymous]

I use maven wagon ssh/sftp. When ChannelSftp.cd() is called with a directory that is not (yet) present on the server, the ChannelSftp._realpath() method throws an exception with id=0, message=Success
The response header type is SSH_FXP_STATUS.
I'm using JSch 0.1.41
I'm not quite sure, if this is adhering to the protocol or a problem on the server side. I do not know which server is used.

[Anonymous]

The supplied patch interprets the 0/Success according to the general rfc section:
"When the operation is successful, and no data needs to be returned, the SSH_FXP_STATUS response with SSH_FX_OK status is appropriate."
.. and just returns the path passed to the method - afterwards, the cd methods makes a stat on the path anyway so this can't do much harm.

--- ./ChannelSftp.java.orig    2009-02-27 00:19:48.000000000 +0100
+++ ./ChannelSftp.java    2009-02-27 02:10:52.000000000 +0100
@@ -1804,7 +1804,8 @@
   }

   private byte[] _realpath(String path) throws SftpException, IOException, Exception{
-    sendREALPATH(Util.str2byte(path, fEncoding));
+    byte[] pathByte = Util.str2byte(path, fEncoding);
+    sendREALPATH(pathByte);

     Header header=new Header();
     header=header(buf, header);
@@ -1819,7 +1820,11 @@
     int i;
     if(type==SSH_FXP_STATUS){
       i=buf.getInt();
-      throwStatusError(buf, i);
+      if(i==SSH_FX_OK){
+          return pathByte;
+      } else {
+          throwStatusError(buf, i);
+      }
     }
     i=buf.getInt();   // count