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# |
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# (c) 2011 Jan Gehring |
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# |
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=head1 NAME |
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Rex::Helper::SSH2::Expect - An Expect like module for Net::SSH2 |
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=head1 DESCRIPTION |
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This is a module to have expect like features for Net::SSH2. This is the first version of this module. Please report bugs at GitHub L |
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=head1 DEPENDENCIES |
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=over 4 |
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=item * |
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L |
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=back |
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=head1 SYNOPSIS |
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use Rex::Helper::SSH2::Expect; |
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my $exp = Rex::Helper::SSH2::Expect->new($ssh2); |
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$exp->spawn("passwd"); |
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$exp->expect($timeout, [ |
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qr/Enter new UNIX password:/ => sub { |
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my ($exp, $line) = @_; |
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$exp->send($new_password); |
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} |
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], |
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[ |
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qr/Retype new UNIX password:/ => sub { |
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my ($exp, $line) = @_; |
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$exp->send($new_password); |
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} |
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], |
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[ |
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qr/passwd: password updated successfully/ => sub { |
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my ($exp, $line) = @_; |
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$exp->hard_close; |
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} |
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]); |
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=head1 CLASS METHODS |
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=cut |
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package Rex::Helper::SSH2::Expect; |
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use v5.12.5; |
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use warnings; |
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our $VERSION = '1.14.3'; # VERSION |
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=head2 new($ssh2) |
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Constructor: You need to parse an connected Net::SSH2 Object. |
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=cut |
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our $Log_Stdout = 1; |
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sub new { |
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my $that = shift; |
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my $proto = ref($that) || $that; |
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my $self = {}; |
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bless( $self, $proto ); |
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$self->{"__shell"} = $_[0]->channel(); |
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$self->{"__shell"}->pty("vt100"); |
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$self->{"__shell"}->shell; |
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$self->{"__log_stdout"} = $Rex::Helper::SSH2::Expect::Log_Stdout; |
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$self->{"__log_to"} = sub { }; |
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return $self; |
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} |
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=head2 log_stdout(0|1) |
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Log on STDOUT. |
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=cut |
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sub log_stdout { |
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my ( $self, $log ) = @_; |
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$self->{"__log_stdout"} = $log; |
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} |
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=head2 log_file($file) |
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Log everything to a file. $file can be a filename, a filehandle or a subRef. |
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=cut |
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sub log_file { |
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my ( $self, $file ) = @_; |
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$self->{"__log_to"} = $file; |
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} |
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sub shell { |
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my ($self) = @_; |
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return $self->{"__shell"}; |
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} |
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=head2 spawn($command, @parameters) |
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Spawn $command with @parameters as parameters. |
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=cut |
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sub spawn { |
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my ( $self, $command, @parameters ) = @_; |
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my $cmd = "$command " . join( " ", @parameters ); |
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$self->shell->write("$cmd\n"); |
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} |
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=head2 soft_close() |
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Currently only an alias to hard_close(); |
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=cut |
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sub soft_close { |
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my ($self) = @_; |
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$self->hard_close; |
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} |
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=head2 hard_close(); |
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Stops the execution of the process. |
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=cut |
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sub hard_close { |
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my ($self) = @_; |
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die; |
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} |
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=head2 expect($timeout, @match_patters) |
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This method controls the execution of your process. |
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=cut |
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sub expect { |
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my ( $self, $timeout, @match_patterns ) = @_; |
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eval { |
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local $SIG{'ALRM'} = sub { die; }; |
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alarm $timeout; |
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my $line = ""; |
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while (1) { |
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my $buf; |
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$self->shell->read( $buf, 1 ); |
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# log to stdout if wanted |
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print $buf if $self->{"__log_stdout"}; |
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$self->_log($buf); |
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if ( $self->_check_patterns( $line, @match_patterns ) ) { |
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$line = ""; |
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alarm $timeout; |
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next; |
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} |
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$line .= $buf; |
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} |
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}; |
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} |
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=head2 send($string) |
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Send a string to the running command. |
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=cut |
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184
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sub send { |
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my ( $self, $str ) = @_; |
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$self->shell->write($str); |
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} |
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sub _check_patterns { |
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my ( $self, $line, @match_patterns ) = @_; |
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for my $pattern (@match_patterns) { |
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if ( $line =~ $pattern->[0] ) { |
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my $code = $pattern->[1]; |
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&$code( $self, $line ); |
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return 1; |
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} |
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} |
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} |
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201
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sub _log { |
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my ( $self, $str ) = @_; |
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204
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my $log_to = $self->{"__log_to"}; |
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206
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0
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if ( ref($log_to) eq "CODE" ) { |
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&$log_to($str); |
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} |
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elsif ( ref($log_to) eq "GLOB" ) { |
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print $log_to $str; |
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} |
212
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else { |
213
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# log to a file |
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open( my $fh, ">>", $log_to ) or die($!); |
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print $fh $str; |
216
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close($fh); |
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} |
218
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219
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} |
220
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221
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1; |