Got it! After a process of elimination, I discovered that the weird errors likely had to do with reading/writing to filehandles that weren't ready to be written to/read from, and I recalled Zentara's post to me in a very similar situation:

http://perlmonks.org/?node_id=884178

And indeed, I found that utilizing IO::Select to only read/write to known ready filehandles that got rid of the bizarre errors. Then it was just a matter of finding the correct voodoo to keep the program from prompting me (the user) for a password, ever, which was basically a matter of appending a bunch of \n's to the password writing process. Lame, yes--but it works :-)

If anyone knows of more elegant ways to do this, that would be great, but this works:

#!/usr/bin/perl

use strict;
use warnings;

use Net::OpenSSH;
use IO::Select;

foreach my $host (qw/rasto@172.16.0.102 rasto@172.16.0.100/) {
    print "doing $host\n";
    my $pass2 = 'orange!';

    my $ssh = Net::OpenSSH->new($host);
    $ssh->error and die "unable to connect to remote host: " . $ssh->e
+rror;
    $ssh->system('sudo -K');

    my( $in, $out, $err, $pid ) = $ssh->open3("sudo ls");
    my $sel = new IO::Select( $in, $err );
    my( @readready, @writeready );
    foreach my $fh ( $sel->can_write(5) ) {
        if( $fh == $in && fileno $in ) {
            syswrite( $in, $pass2 . "\n\n\n\n\n\n" );

        }
    }
    my @output;
    foreach my $fh ( $sel->can_read(5) ) {
        print "inside foreach\n";
        @output = <$err>;
    }
    if( grep { $_ =~ /Sorry/gsm } @output ) {
        print "fail\n";
    }
    else { print "success!\n"; }
    close $in;
    close $out;
    close $err;
}

[download]

In reply to Re: Trapping sudo failures via Net::OpenSSH by rastoboy
in thread Trapping sudo failures via Net::OpenSSH by rastoboy

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