I am trying to duplicate a PERL script that uses Net::FTP to connect to a non-secure server that returns the size of a file that was FTP'd via a calling script. The new PERL script needs to connect to a secure server using Net::SFTP and RSA keys which is working. However, I can not fine the equivalent of the Net::FTP cwd and size commands for the Net::SFTP script. How does one do these functions? 

#!/usr/bin/perl
use Net::FTP;

# Remote host variables passed by the caller 
# Calling sequence: checkshopatronfiles.pl arg1 arg2 arg3 arg4 arg5 
chomp($rhost=@ARGV[0]);          # Remote host domain, alias or IP add
+ress
chomp($ruserid=@ARGV[1]);        # Remote userid
chomp($rpasswd=@ARGV[2]);        # Remote password
chomp($rdirectory=@ARGV[3]);     # Remote directory
chomp($rfilename=@ARGV[4]);      # Remote file name

# Local variables for LOG file name
# $log1=substr ($rfilename, 0, rindex($rfilename, "."));
$log1=$rfilename;         # Use name as passed with no extension
$log2=".lg";
$lfilename=$log1.$log2;   # Log file name

# Local variables for OUT file name
# $out1=substr ($rfilename, 0, rindex($rfilename, "."));
$out1=$rfilename;         # Use name as passed with no extension
$out2=".sz";
$ofilename=$out1.$out2;   # Output file name

open (LOGFILE, '>', $lfilename); # Always create the log file
print LOGFILE "Remote host=$rhost\n";
print LOGFILE "Remote userid=$ruserid\n";
print LOGFILE "Remote passwd=$rpasswd\n";
print LOGFILE "Remote directory=$rdirectory\n";
print LOGFILE "Remote filename=$rfilename\n";

open (OUTFILE, '>', $ofilename); # Always create the output file

$ftp=Net::FTP->new($rhost,Timeout=>10) or $errcd=1;
  push @ERRORS, "Can't connect to $rhost\n" if $errcd;
  myerr() if $errcd;
print LOGFILE "Connected\n";

$ftp->login($ruserid,$rpasswd) or $errcd=2;
  push @ERRORS, "Can't login to $rhost\n" if $errcd;
  myerr() if $errcd; 
print LOGFILE "Logged in\n";

$ftp->cwd($rdirectory) or $errcd=3;
  push @ERRORS, "Can't cd to $rdirectory\n" if $errcd;
  myerr() if $errcd;
print LOGFILE "Found directory\n";

$ftp->binary;

$rfilesize=$ftp->size($rfilename) or $errcd=4;
  push @ERRORS, "Can't get file size for file $rfilename\n" if $errcd;
  myerr() if $errcd;
print OUTFILE "$rfilesize\n";
print LOGFILE "Got file size\n";
print LOGFILE "Remote filesize=$rfilesize\n";
print LOGFILE "Exit code=0\n";
close (LOGFILE);
close (OUTFILE);

$ftp->quit;
exit $errcd;

sub myerr {
  print LOGFILE "Error=$errcd\n";
  print LOGFILE @ERRORS;
  close (LOGFILE);
  print OUTFILE "0\n";
  close (OUTFILE);
  exit $errcd;
}

[download]

Here is the Net::SFTP test script. I did a put to make sure the secure login with rsa keys is working and I can see the file on the remote server no problem. However this is where the trouble begins. I would like to change directory to where I put the file so I can get its size as I did in the Net::FTP script. 

#!/usr/bin/perl
use Net::SFTP;
use warnings;
$rhost="droppoint.shopatron.com";
$ruserid="1392";
$rdirectory="/uploads/inventory/dev";
$rfilename="/home/spch/xxx";
%args = (user => "$ruserid", ssh_args => {identity_files => ["/home/ta
+lex/.ssh/id_rsa"]});
print "rhost=$rhost\n";
print "ruserid=$ruserid\n";
print "rdirectory=$rdirectory\n";
print "rfilename=$rfilename\n";
$sftp=Net::SFTP->new($rhost, %args) or die "can't log in";
$sftp->put('/home/spch/xxx', '/uploads/inventory/dev/xxx');
$sftp->setcwd('/uploads/inventory/dev');
$sftp->size('/uploads/inventory/dev/xxx');
$sftp->quit;
exit;

[download]

When I run the script I get the following error messages: Did we do something wrong on the installation of Net::SFTP or are the setcwd and size commands not supported? Can't locate object method "setcwd" via package "Net::SFTP" at /home/spch/testperl.pl line 15. If I comment out the setcwd command and try to get the file size using the full path name I get the following error. Can't locate object method "size" via package "Net::SFTP" at /home/spch/testperl.pl line 16. I also get the following error message when I comment out the setcwd and size commands. Can't locate object method "quit" via package "Net::SFTP" at /home/spch/testperl.pl line 17.

In reply to Net::SFTP Object Methods? by talex

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