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https://github.com/xcat2/xcat-core.git
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102 lines
2.9 KiB
Perl
102 lines
2.9 KiB
Perl
package xCAT::SSHInteract;
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use Exporter;
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use Net::Telnet;
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BEGIN {
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our @ISA = qw/Exporter Net::Telnet/;
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}
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use strict;
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our @EXPORT_OK = ();
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use IO::Pty;
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use POSIX;
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sub _startssh {
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my $self = shift;
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my $pty = shift;
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my $name = shift;
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my $dest = shift;
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my %args = @_;
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my $tty;
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my $tty_fd;
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my $pid = fork();
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if ($pid) {
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return;
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}
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#in child
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$tty = $pty->slave or die "$!";
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$pty->make_slave_controlling_terminal();
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$tty_fd = $tty->fileno or die "$!";
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close($pty);
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open STDIN, "<&", $tty_fd;
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open STDOUT, ">&", $tty_fd;
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open STDERR, ">&", STDOUT;
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close($tty);
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my @cmd = ("ssh", "-o", "StrictHostKeyChecking=no");
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if ($args{"-nokeycheck"}) {
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push @cmd, ("-o", "UserKnownHostsFile=/dev/null");
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}
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push @cmd, ("-l", $name, $dest);
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exec @cmd;
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}
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sub new {
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my $class = shift;
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my %args = @_;
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my $pty = IO::Pty->new or die "Unable to perform ssh: $!";
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$args{"-fhopen"} = $pty;
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$args{"-telnetmode"} = 0;
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$args{"-telnetmode"} = 0;
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$args{"-cmd_remove_mode"} = 1;
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my $username = $args{"-username"};
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my $host = $args{"-host"};
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my $password = $args{"-password"};
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delete $args{"-host"};
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delete $args{"-username"};
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delete $args{"-password"};
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my $nokeycheck = $args{"-nokeycheck"};
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delete $args{"-nokeycheck"};
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my $self = $class->Net::Telnet::new(%args);
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_startssh($self, $pty, $username, $host, "-nokeycheck" => $nokeycheck);
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my $promptex = $args{Prompt};
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$promptex =~ s!^/!!;
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$promptex =~ s!/\z!!;
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my ($prematch, $match) = $self->waitfor(Match => $args{Prompt}, Match => '/password:/i', Match => '/REMOTE HOST IDENTIFICATION HAS CHANGED/') or die "Login Failed:", $self->lastline;
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#print "prematch=$prematch, match=$match\n";
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if ($match =~ /password:/i) {
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#$self->waitfor("-match" => '/password:/i', -errmode => "return") or die "Unable to reach host ",$self->lastline;
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$self->print($password);
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my $nextline = $self->getline();
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chomp($nextline);
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while ($nextline =~ /^\s*$/ or $nextline =~ /^Last login:/) {
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$nextline = $self->get();
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chomp($nextline);
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}
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if ($nextline =~ /password:/i or $nextline =~ /Permission denied, please try again/ or $nextline =~ /disconnect from/) {
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die "Incorrect Password";
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} else {
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while ($nextline =~ /^Last login:/) {
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$nextline = $self->get();
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}
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if ($nextline =~ /$promptex/) {
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*$self->{_xcatsshinteract}->{_atprompt} = 1;
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}
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}
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} elsif ($match =~ /$promptex/) {
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*$self->{_xcatsshinteract}->{_atprompt} = 1;
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} elsif ($match =~ /REMOTE HOST IDENTIFICATION HAS CHANGED/) {
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die "Known_hosts issue";
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}
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return bless($self, $class);
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}
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sub atprompt {
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my $self = shift;
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return *$self->{_xcatsshinteract}->{_atprompt};
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}
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1;
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