Hi everyone, i'm currently trying to write an ftp'ing program in perl and am having real trouble using the stfp modules to make an sftp connection using password authentication. I've read through the various threads here at the monastery, but none seem to hit the mark. Thus i post the question.

So, i have played around with using the following:

  • Net::SFTP::Foreign (yes i know it's being depricated)
  • Net::SFTP::Foreign::Compat
  • Net::SFTP

    I can make a connection with all of them, but with the first two i get the following in my log: 

    debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssa
+pi-with-mic,password
debug1: Next authentication method: password
debug1: read_passphrase: can't open /dev/tty: No such device or addres
+s
debug1: Authentications that can continue: publickey,gssapi-keyex,gssa
+pi-with-mic,password
Permission denied, please try again.
debug1: read_passphrase: can't open /dev/tty: No such device or addres
+s
debug1: Authentications that can continue: publickey,gssapi-keyex,gssa
+pi-with-mic,password
Permission denied, please try again.
debug1: read_passphrase: can't open /dev/tty: No such device or addres
+s
debug1: Authentications that can continue: publickey,gssapi-keyex,gssa
+pi-with-mic,password
debug1: No more authentication methods to try.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
reading from ssh pipe failed ()

    [download]

    Running Net::SFTP seems to work, but i would much rather make use of the installed SSH2 system modules, rather than the Perl implementation of the same.

    From my relatively poor understanding of how this all works, i understand that the login process is trying to write a response back to the calling process, and as it is essentially a batch process no tty device is available i get the error. However, from what i understand, installing IO::Pty should stop this problem - but it doesn't.

    I am running this on CentOS rel 5.5 with all the latest patches. Perl v5.8.8 and all the latest module versions are installed. Does anyone have any suggestions, because i am all out of ideas.

    In reply to SFTP login problems by chipchidster

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