JSCH (SFTP) fails on change dir on sub folders level (second level) -


jsch's sftp channel fails change directory when previous directory not in root directory (ftp home). happens on sftp servers , not of them.

for example directory structure this:

  • /
    • level-1
      • level-2

cd level-1 (ok)
cd level-2 (fails)

it throws exception this

4: folder not found: /level-1/level-2     @ com.jcraft.jsch.channelsftp.throwstatuserror(channelsftp.java:2569)     @ com.jcraft.jsch.channelsftp._realpath(channelsftp.java:2100)     @ com.jcraft.jsch.channelsftp.cd(channelsftp.java:315)

the sftp server error returns / realpath root. other server didn't fail returns full path list /usr/account.

i found source code jsch 0.1.49 , traced it. found out there method named _realpath throws exception when server fails return realpath. input parameter method absolute path of remote folder commented exception out , instead returned absolute path. works fine.

this modified code. note original code works of time , change made rare situation server fails return realpath on second level directory (sub folders), , there no guarantee works servers.

//com.jcraft.jsch.channelsftp private byte[] _realpath(string path) throws ... { ... if (type == ssh_fxp_status) {   = buf.getint();   /* servers fail return realpath    on second level of directory (subfolders).    original code commented out , replaced return.*/   //throwstatuserror(buf, i);   return (path.getbytes()); } ...

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