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# -*-cperl-*-
# Please see the .pod files for documentation. This module is copyrighted
# as per the usual perl legalese:
# Copyright (c) 1997 Austin Schutz.
# expect() interface & functionality enhancements (c) 1999 Roland Giersig.
#
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl
# itself.
#
# Don't blame/flame me if you bust your stuff.
# Austin Schutz <ASchutz@users.sourceforge.net>
#
# This module now is maintained by
# Roland Giersig <RGiersig@cpan.org>
#
use 5.006; # 4 won't cut it.
package Expect;
use IO::Pty 1.03; # We need make_slave_controlling_terminal()
use IO::Tty;
use strict 'refs';
use strict 'vars';
use strict 'subs';
use POSIX qw(:sys_wait_h :unistd_h); # For WNOHANG and isatty
use Fcntl qw(:DEFAULT); # For checking file handle settings.
use Carp qw(cluck croak carp confess);
use IO::Handle ();
use Exporter ();
use Errno;
# This is necessary to make routines within Expect work.
@Expect::ISA = qw(IO::Pty Exporter);
@Expect::EXPORT = qw(expect exp_continue exp_continue_timeout);
BEGIN {
$Expect::VERSION = '1.21';
# These are defaults which may be changed per object, or set as
# the user wishes.
# This will be unset, since the default behavior differs between
# spawned processes and initialized filehandles.
# $Expect::Log_Stdout = 1;
$Expect::Log_Group = 1;
$Expect::Debug = 0;
$Expect::Exp_Max_Accum = 0; # unlimited
$Expect::Exp_Internal = 0;
$Expect::IgnoreEintr = 0;
$Expect::Manual_Stty = 0;
$Expect::Multiline_Matching = 1;
$Expect::Do_Soft_Close = 0;
@Expect::Before_List = ();
@Expect::After_List = ();
%Expect::Spawned_PIDs = ();
}
sub version {
my($version) = shift;
warn "Version $version is later than $Expect::VERSION. It may not be supported" if (defined ($version) && ($version > $Expect::VERSION));
die "Versions before 1.03 are not supported in this release" if ((defined ($version)) && ($version < 1.03));
return $Expect::VERSION;
}
sub new {
my ($class) = shift;
$class = ref($class) if ref($class); # so we can be called as $exp->new()
# Create the pty which we will use to pass process info.
my($self) = new IO::Pty;
die "$class: Could not assign a pty" unless $self;
bless $self => $class;
$self->autoflush(1);
# This is defined here since the default is different for
# initialized handles as opposed to spawned processes.
${*$self}{exp_Log_Stdout} = 1;
$self->_init_vars();
if (@_) {
# we got add'l parms, so pass them to spawn
return $self->spawn(@_);
}
return $self;
}
sub spawn {
my ($class) = shift;
my $self;
if (ref($class)) {
$self = $class;
} else {
$self = $class->new();
}
croak "Cannot reuse an object with an already spawned command"
if exists ${*$self}{"exp_Command"};
my(@cmd) = @_; # spawn is passed command line args.
${*$self}{"exp_Command"} = \@cmd;
# set up pipe to detect childs exec error
pipe(FROM_CHILD, TO_PARENT) or die "Cannot open pipe: $!";
pipe(FROM_PARENT, TO_CHILD) or die "Cannot open pipe: $!";
TO_PARENT->autoflush(1);
TO_CHILD->autoflush(1);
eval {
fcntl(TO_PARENT, Fcntl::F_SETFD, Fcntl::FD_CLOEXEC);
};
my $pid = fork;
unless (defined ($pid)) {
warn "Cannot fork: $!" if $^W;
return undef;
}
if($pid) {
# parent
my $errno;
${*$self}{exp_Pid} = $pid;
close TO_PARENT;
close FROM_PARENT;
$self->close_slave();
$self->set_raw() if $self->raw_pty and isatty($self);
close TO_CHILD; # so child gets EOF and can go ahead
# now wait for child exec (eof due to close-on-exit) or exec error
my $errstatus = sysread(FROM_CHILD, $errno, 256);
die "Cannot sync with child: $!" if not defined $errstatus;
close FROM_CHILD;
if ($errstatus) {
$! = $errno+0;
warn "Cannot exec(@cmd): $!\n" if $^W;
return undef;
}
}
else {
# child
close FROM_CHILD;
close TO_CHILD;
$self->make_slave_controlling_terminal();
my $slv = $self->slave()
or die "Cannot get slave: $!";
$slv->set_raw() if $self->raw_pty;
close($self);
# wait for parent before we detach
my $buffer;
my $errstatus = sysread(FROM_PARENT, $buffer, 256);
die "Cannot sync with parent: $!" if not defined $errstatus;
close FROM_PARENT;
close(STDIN);
open(STDIN,"<&". $slv->fileno())
or die "Couldn't reopen STDIN for reading, $!\n";
close(STDOUT);
open(STDOUT,">&". $slv->fileno())
or die "Couldn't reopen STDOUT for writing, $!\n";
close(STDERR);
open(STDERR,">&". $slv->fileno())
or die "Couldn't reopen STDERR for writing, $!\n";
{ exec(@cmd) };
print TO_PARENT $!+0;
die "Cannot exec(@cmd): $!\n";
}
# This is sort of for code compatibility, and to make debugging a little
# easier. By code compatibility I mean that previously the process's
# handle was referenced by $process{Pty_Handle} instead of just $process.
# This is almost like 'naming' the handle to the process.
# I think this also reflects Tcl Expect-like behavior.
${*$self}{exp_Pty_Handle} = "spawn id(".$self->fileno().")";
if ((${*$self}{"exp_Debug"}) or (${*$self}{"exp_Exp_Internal"})) {
cluck("Spawned '@cmd'\r\n",
"\t${*$self}{exp_Pty_Handle}\r\n",
"\tPid: ${*$self}{exp_Pid}\r\n",
"\tTty: ".$self->SUPER::ttyname()."\r\n",
);
}
$Expect::Spawned_PIDs{${*$self}{exp_Pid}} = undef;
return $self;
}
sub exp_init {
# take a filehandle, for use later with expect() or interconnect() .
# All the functions are written for reading from a tty, so if the naming
# scheme looks odd, that's why.
my ($class) = shift;
my($self) = shift;
bless $self, $class;
croak "exp_init not passed a file object, stopped"
unless defined($self->fileno());
$self->autoflush(1);
# Define standard variables.. debug states, etc.
$self->_init_vars();
# Turn of logging. By default we don't want crap from a file to get spewed
# on screen as we read it.
${*$self}{exp_Log_Stdout} = 0;
${*$self}{exp_Pty_Handle} = "handle id(".$self->fileno().")";
${*$self}{exp_Pty_Handle} = "STDIN" if $self->fileno() == fileno (STDIN);
print STDERR "Initialized ${*$self}{exp_Pty_Handle}.'\r\n"
if ${*$self}{"exp_Debug"};
return $self;
}
# make an alias
*init = \&exp_init;
######################################################################
# We're happy OOP people. No direct access to stuff.
# For standard read-writeable parameters, we define some autoload magic...
my %Writeable_Vars = ( debug => 'exp_Debug',
exp_internal => 'exp_Exp_Internal',
do_soft_close => 'exp_Do_Soft_Close',
max_accum => 'exp_Max_Accum',
match_max => 'exp_Max_Accum',
notransfer => 'exp_NoTransfer',
log_stdout => 'exp_Log_Stdout',
log_user => 'exp_Log_Stdout',
log_group => 'exp_Log_Group',
manual_stty => 'exp_Manual_Stty',
restart_timeout_upon_receive => 'exp_Continue',
raw_pty => 'exp_Raw_Pty',
);
my %Readable_Vars = ( pid => 'exp_Pid',
exp_pid => 'exp_Pid',
exp_match_number => 'exp_Match_Number',
match_number => 'exp_Match_Number',
exp_error => 'exp_Error',
error => 'exp_Error',
exp_command => 'exp_Command',
command => 'exp_Command',
exp_match => 'exp_Match',
match => 'exp_Match',
exp_matchlist => 'exp_Matchlist',
matchlist => 'exp_Matchlist',
exp_before => 'exp_Before',
before => 'exp_Before',
exp_after => 'exp_After',
after => 'exp_After',
exp_exitstatus => 'exp_Exit',
exitstatus => 'exp_Exit',
exp_pty_handle => 'exp_Pty_Handle',
pty_handle => 'exp_Pty_Handle',
exp_logfile => 'exp_Log_File',
logfile => 'exp_Log_File',
%Writeable_Vars,
);
sub AUTOLOAD {
my $self = shift;
my $type = ref($self)
or croak "$self is not an object";
use vars qw($AUTOLOAD);
my $name = $AUTOLOAD;
$name =~ s/.*:://; # strip fully-qualified portion
unless (exists $Readable_Vars{$name}) {
croak "ERROR: cannot find method `$name' in class $type";
}
my $varname = $Readable_Vars{$name};
my $tmp;
$tmp = ${*$self}{$varname} if exists ${*$self}{$varname};
if (@_) {
if (exists $Writeable_Vars{$name}) {
my $ref = ref($tmp);
if ($ref eq 'ARRAY') {
${*$self}{$varname} = [ @_ ];
} elsif ($ref eq 'HASH') {
${*$self}{$varname} = { @_ };
} else {
${*$self}{$varname} = shift;
}
} else {
carp "Trying to set read-only variable `$name'"
if $^W;
}
}
my $ref = ref($tmp);
return (wantarray? @{$tmp} : $tmp) if ($ref eq 'ARRAY');
return (wantarray? %{$tmp} : $tmp) if ($ref eq 'HASH');
return $tmp;
}
######################################################################
sub set_seq {
# Set an escape sequence/function combo for a read handle for interconnect.
# Ex: $read_handle->set_seq('',\&function,\@parameters);
my($self) = shift;
my($escape_sequence,$function) = (shift,shift);
${${*$self}{exp_Function}}{$escape_sequence} = $function;
if ((!defined($function)) ||($function eq 'undef')) {
${${*$self}{exp_Function}}{$escape_sequence} = \&_undef;
}
${${*$self}{exp_Parameters}}{$escape_sequence} = shift;
# This'll be a joy to execute. :)
if ( ${*$self}{"exp_Debug"} ) {
print STDERR "Escape seq. '" . $escape_sequence;
print STDERR "' function for ${*$self}{exp_Pty_Handle} set to '";
print STDERR ${${*$self}{exp_Function}}{$escape_sequence};
print STDERR "(" . join(',', @_) . ")'\r\n";
}
}
sub set_group {
my($self) = shift;
my($write_handle);
# Make sure we can read from the read handle
if (! defined($_[0])) {
if (defined (${*$self}{exp_Listen_Group})) {
return @{${*$self}{exp_Listen_Group}};
} else {
# Refrain from referencing an undef
return undef;
}
}
@{${*$self}{exp_Listen_Group}} = ();
if ($self->_get_mode() !~ 'r') {
warn("Attempting to set a handle group on ${*$self}{exp_Pty_Handle}, ",
"a non-readable handle!\r\n");
}
while ($write_handle = shift) {
if ($write_handle->_get_mode() !~ 'w') {
warn("Attempting to set a non-writeable listen handle ",
"${*$write_handle}{exp_Pty_handle} for ",
"${*$self}{exp_Pty_Handle}!\r\n");
}
push (@{${*$self}{exp_Listen_Group}},$write_handle);
}
}
sub log_file {
my $self = shift;
return(${*$self}{exp_Log_File})
if not @_; # we got no param, return filehandle
my $file = shift;
my $mode = shift || "a";
if (${*$self}{exp_Log_File} and ref(${*$self}{exp_Log_File}) ne 'CODE') {
close(${*$self}{exp_Log_File});
}
${*$self}{exp_Log_File} = undef;
return if (not $file);
my $fh = $file;
if (not ref($file)) {
# it's a filename
$fh = new IO::File $file, $mode
or croak "Cannot open logfile $file: $!";
}
if (ref($file) ne 'CODE') {
croak "Given logfile doesn't have a 'print' method"
if not $fh->can("print");
$fh->autoflush(1); # so logfile is up to date
}
${*$self}{exp_Log_File} = $fh;
}
# I'm going to leave this here in case I might need to change something.
# Previously this was calling `stty`, in a most bastardized manner.
sub exp_stty {
my($self) = shift;
my($mode) = "@_";
return undef unless defined($mode);
if (not defined $INC{"IO/Stty.pm"}) {
carp "IO::Stty not installed, cannot change mode";
return undef;
}
if (${*$self}{"exp_Debug"}) {
print STDERR "Setting ${*$self}{exp_Pty_Handle} to tty mode '$mode'\r\n";
}
unless (POSIX::isatty($self)) {
if (${*$self}{"exp_Debug"} or $^W) {
warn "${*$self}{exp_Pty_Handle} is not a tty. Not changing mode";
}
return ''; # No undef to avoid warnings elsewhere.
}
IO::Stty::stty($self, split(/\s/,$mode));
}
*stty = \&exp_stty;
# If we want to clear the buffer. Otherwise Accum will grow during send_slow
# etc. and contain the remainder after matches.
sub clear_accum {
my ($self) = shift;
my ($temp) = (${*$self}{exp_Accum});
${*$self}{exp_Accum} = '';
# return the contents of the accumulator.
return $temp;
}
sub set_accum {
my ($self) = shift;
my ($temp) = (${*$self}{exp_Accum});
${*$self}{exp_Accum} = shift;
# return the contents of the accumulator.
return $temp;
}
######################################################################
# define constants for pattern subs
sub exp_continue() { "exp_continue" }
sub exp_continue_timeout() { "exp_continue_timeout" }
######################################################################
# Expect on multiple objects at once.
#
# Call as Expect::expect($timeout, -i => \@exp_list, @patternlist,
# -i => $exp, @pattern_list, ...);
# or $exp->expect($timeout, @patternlist, -i => \@exp_list, @patternlist,
# -i => $exp, @pattern_list, ...);
#
# Patterns are arrays that consist of
# [ $pattern_type, $pattern, $sub, @subparms ]
#
# Optional $pattern_type is '-re' (RegExp, default) or '-ex' (exact);
#
# $sub is optional CODE ref, which is called as &{$sub}($exp, @subparms)
# if pattern matched; may return exp_continue or exp_continue_timeout.
#
# Old-style syntax (pure pattern strings with optional type) also supported.
#
sub expect {
my $self;
print STDERR ("expect(@_) called...\n") if $Expect::Debug;
if (defined($_[0])) {
if (ref($_[0]) and $_[0]->isa('Expect')) {
$self = shift;
} elsif ($_[0] eq 'Expect') {
shift; # or as Expect->expect
}
}
croak "expect(): not enough arguments, should be expect(timeout, [patterns...])" if @_ < 1;
my $timeout = shift;
my $timeout_hook = undef;
my @object_list;
my %patterns;
my @pattern_list;
my @timeout_list;
my $curr_list;
if ($self) {
$curr_list = [$self];
} else {
# called directly, so first parameter must be '-i' to establish
# object list.
$curr_list = [];
croak "expect(): ERROR: if called directly (not as \$obj->expect(...), but as Expect::expect(...), first parameter MUST be '-i' to set an object (list) for the patterns to work on."
if ($_[0] ne '-i');
}
# Let's make a list of patterns wanting to be evaled as regexps.
my $parm;
my $parm_nr = 1;
while (defined($parm = shift)) {
print STDERR ("expect(): handling param '$parm'...\n") if $Expect::Debug;
if (ref($parm)) {
if (ref($parm) eq 'ARRAY') {
my $err = _add_patterns_to_list(\@pattern_list, \@timeout_list,
$parm_nr, $parm);
carp ("expect(): Warning: multiple `timeout' patterns (",
scalar(@timeout_list), ").\r\n")
if @timeout_list > 1;
$timeout_hook = $timeout_list[-1] if $timeout_list[-1];
croak $err if $err;
$parm_nr++;
} else {
croak ("expect(): Unknown pattern ref $parm");
}
} else {
# not a ref, is an option or raw pattern
if (substr($parm, 0, 1) eq '-') {
# it's an option
print STDERR ("expect(): handling option '$parm'...\n")
if $Expect::Debug;
if ($parm eq '-i') {
# first add collected patterns to object list
if (scalar(@$curr_list)) {
push @object_list, $curr_list if not exists $patterns{"$curr_list"};
push @{$patterns{"$curr_list"}}, @pattern_list;
@pattern_list = ();
}
# now put parm(s) into current object list
if (ref($_[0]) eq 'ARRAY') {
$curr_list = shift;
} else {
$curr_list = [ shift ];
}
} elsif ($parm eq '-re'
or $parm eq '-ex') {
if (ref($_[1]) eq 'CODE') {
push @pattern_list, [ $parm_nr, $parm, shift, shift ];
} else {
push @pattern_list, [ $parm_nr, $parm, shift, undef ];
}
$parm_nr++;
} else {
croak ("Unknown option $parm");
}
} else {
# a plain pattern, check if it is followed by a CODE ref
if (ref($_[0]) eq 'CODE') {
if ($parm eq 'timeout') {
push @timeout_list, shift;
carp ("expect(): Warning: multiple `timeout' patterns (",
scalar(@timeout_list), ").\r\n")
if @timeout_list > 1;
$timeout_hook = $timeout_list[-1] if $timeout_list[-1];
} elsif ($parm eq 'eof') {
push @pattern_list, [ $parm_nr, "-$parm", undef, shift ];
} else {
push @pattern_list, [ $parm_nr, '-ex', $parm, shift ];
}
} else {
print STDERR ("expect(): exact match '$parm'...\n")
if $Expect::Debug;
push @pattern_list, [ $parm_nr, '-ex', $parm, undef ];
}
$parm_nr++;
}
}
}
# add rest of collected patterns to object list
carp "expect(): Empty object list" unless $curr_list;
push @object_list, $curr_list if not exists $patterns{"$curr_list"};
push @{$patterns{"$curr_list"}}, @pattern_list;
my $debug = $self ? ${*$self}{exp_Debug} : $Expect::Debug;
my $internal = $self ? ${*$self}{exp_Exp_Internal} : $Expect::Exp_Internal;
# now start matching...
if (@Expect::Before_List) {
print STDERR ("Starting BEFORE pattern matching...\r\n")
if ($debug or $internal);
_multi_expect(0, undef, @Expect::Before_List);
}
cluck ("Starting EXPECT pattern matching...\r\n")
if ($debug or $internal);
my @ret;
@ret = _multi_expect($timeout, $timeout_hook,
map { [$_, @{$patterns{"$_"}}] } @object_list);
if (@Expect::After_List) {
print STDERR ("Starting AFTER pattern matching...\r\n")
if ($debug or $internal);
_multi_expect(0, undef, @Expect::After_List);
}
wantarray ? @ret : $ret[0];
}
######################################################################
# the real workhorse
#
sub _multi_expect($$@) {
my $timeout = shift;
my $timeout_hook = shift;
if ($timeout_hook) {
croak "Unknown timeout_hook type $timeout_hook"
unless (ref($timeout_hook) eq 'CODE'
or ref($timeout_hook) eq 'ARRAY');
}
foreach my $pat (@_) {
my @patterns = @{$pat}[1..$#{$pat}];
foreach my $exp (@{$pat->[0]}) {
${*$exp}{exp_New_Data} = 1; # first round we always try to match
if (exists ${*$exp}{"exp_Max_Accum"} and ${*$exp}{"exp_Max_Accum"}) {
${*$exp}{exp_Accum} =
$exp->_trim_length(${*$exp}{exp_Accum},
${*$exp}{exp_Max_Accum});
}
print STDERR ("${*$exp}{exp_Pty_Handle}: beginning expect.\r\n",
"\tTimeout: ",
(defined($timeout) ? $timeout : "unlimited" ),
" seconds.\r\n",
"\tCurrent time: ". localtime(). "\r\n",
) if $Expect::Debug;
# What are we expecting? What do you expect? :-)
if (${*$exp}{exp_Exp_Internal}) {
print STDERR "${*$exp}{exp_Pty_Handle}: list of patterns:\r\n";
foreach my $pattern (@patterns) {
print STDERR (' ',
defined($pattern->[0])?
'#'. $pattern->[0].': ' :
'',
$pattern->[1],
" `", _make_readable($pattern->[2]),
"'\r\n");
}
print STDERR "\r\n";
}
}
}
my $successful_pattern;
my $exp_matched;
my $err;
my $before;
my $after;
my $match;
my @matchlist;
# Set the last loop time to now for time comparisons at end of loop.
my $start_loop_time = time();
my $exp_cont = 1;
READLOOP:
while ($exp_cont) {
$exp_cont = 1;
$err = "";
my $rmask = '';
my $time_left = undef;
if (defined $timeout) {
$time_left = $timeout - (time() - $start_loop_time);
$time_left = 0 if $time_left < 0;
}
$exp_matched = undef;
# Test for a match first so we can test the current Accum w/out
# worrying about an EOF.
foreach my $pat (@_) {
my @patterns = @{$pat}[1..$#{$pat}];
foreach my $exp (@{$pat->[0]}) {
# build mask for select in next section...
my $fn = $exp->fileno();
vec($rmask, $fn, 1) = 1 if defined $fn;
next unless ${*$exp}{exp_New_Data};
# clear error status
${*$exp}{exp_Error} = undef;
# This could be huge. We should attempt to do something
# about this. Because the output is used for debugging
# I'm of the opinion that showing smaller amounts if the
# total is huge should be ok.
# Thus the 'trim_length'
print STDERR ("\r\n${*$exp}{exp_Pty_Handle}: Does `",
$exp->_trim_length(_make_readable(${*$exp}{exp_Accum})),
"'\r\nmatch:\r\n")
if ${*$exp}{exp_Exp_Internal};
# we don't keep the parameter number anymore
# (clashes with before & after), instead the parameter number is
# stored inside the pattern; we keep the pattern ref
# and look up the number later.
foreach my $pattern (@patterns) {
print STDERR (" pattern",
defined($pattern->[0])? ' #' . $pattern->[0] : '',
": ", $pattern->[1],
" `", _make_readable($pattern->[2]),
"'? ")
if (${*$exp}{exp_Exp_Internal});
# Matching exactly
if ($pattern->[1] eq '-ex') {
my $match_index = index(${*$exp}{exp_Accum},
$pattern->[2]);
# We matched if $match_index > -1
if ($match_index > -1) {
$before = substr(${*$exp}{exp_Accum}, 0, $match_index);
$match = substr(${*$exp}{exp_Accum}, $match_index,
length($pattern->[2]));
$after = substr(${*$exp}{exp_Accum},
$match_index + length($pattern->[2])) ;
${*$exp}{exp_Before} = $before;
${*$exp}{exp_Match} = $match;
${*$exp}{exp_After} = $after;
${*$exp}{exp_Match_Number} = $pattern->[0];
$exp_matched = $exp;
}
} elsif ($pattern->[1] eq '-re') {
# m// in array context promises to return an empty list
# but doesn't if the pattern doesn't contain brackets (),
# so we kludge around by adding an empty bracket
# at the end.
if ($Expect::Multiline_Matching) {
@matchlist = (${*$exp}{exp_Accum}
=~ m/$pattern->[2]()/m);
($match, $before, $after) = ($&, $`, $');
} else {
@matchlist = (${*$exp}{exp_Accum}
=~ m/$pattern->[2]()/);
($match, $before, $after) = ($&, $`, $');
}
if (@matchlist) {
# Matching regexp
${*$exp}{exp_Before} = $before;
${*$exp}{exp_Match} = $match;
${*$exp}{exp_After} = $after;
pop @matchlist; # remove kludged empty bracket from end
@{${*$exp}{exp_Matchlist}} = @matchlist;
${*$exp}{exp_Match_Number} = $pattern->[0];
$exp_matched = $exp;
}
} else {
# 'timeout' or 'eof'
}
if ($exp_matched) {
${*$exp}{exp_Accum} = $after
unless ${*$exp}{exp_NoTransfer};
print STDERR "YES!!\r\n"
if ${*$exp}{exp_Exp_Internal};
print STDERR (" Before match string: `",
$exp->_trim_length(_make_readable(($before))),
"'\r\n",
" Match string: `", _make_readable($match),
"'\r\n",
" After match string: `",
$exp->_trim_length(_make_readable(($after))),
"'\r\n",
" Matchlist: (",
join(", ",
map { "`".$exp->_trim_length(_make_readable(($_)))."'"
} @matchlist,
),
")\r\n",
) if (${*$exp}{exp_Exp_Internal});
# call hook function if defined
if ($pattern->[3]) {
print STDERR ("Calling hook $pattern->[3]...\r\n",
) if (${*$exp}{exp_Exp_Internal} or $Expect::Debug);
if ($#{$pattern} > 3) {
# call with parameters if given
$exp_cont = &{$pattern->[3]}($exp,
@{$pattern}[4..$#{$pattern}]);
} else {
$exp_cont = &{$pattern->[3]}($exp);
}
}
if ($exp_cont and $exp_cont eq exp_continue) {
print STDERR ("Continuing expect, restarting timeout...\r\n")
if (${*$exp}{exp_Exp_Internal} or $Expect::Debug);
$start_loop_time = time(); # restart timeout count
next READLOOP;
} elsif ($exp_cont and $exp_cont eq exp_continue_timeout) {
print STDERR ("Continuing expect...\r\n")
if (${*$exp}{exp_Exp_Internal} or $Expect::Debug);
next READLOOP;
}
last READLOOP;
}
print STDERR "No.\r\n" if ${*$exp}{exp_Exp_Internal};
}
print STDERR "\r\n" if ${*$exp}{exp_Exp_Internal};
# don't have to match again until we get new data
${*$exp}{exp_New_Data} = 0;
}
} # End of matching section
# No match, let's see what is pending on the filehandles...
print STDERR ("Waiting for new data (",
defined($time_left)? $time_left : 'unlimited',
" seconds)...\r\n",
) if ($Expect::Exp_Internal or $Expect::Debug);
my $nfound;
SELECT: {
$nfound = select($rmask, undef, undef, $time_left);
if ($nfound < 0) {
if ($!{EINTR} and $Expect::IgnoreEintr) {
print STDERR ("ignoring EINTR, restarting select()...\r\n")
if ($Expect::Exp_Internal or $Expect::Debug);
next SELECT;
}
print STDERR ("select() returned error code '$!'\r\n")
if ($Expect::Exp_Internal or $Expect::Debug);
# returned error
$err = "4:$!";
last READLOOP;
}
}
# go until we don't find something (== timeout).
if ($nfound == 0) {
# No pattern, no EOF. Did we time out?
$err = "1:TIMEOUT";
foreach my $pat (@_) {
foreach my $exp (@{$pat->[0]}) {
$before = ${*$exp}{exp_Before} = ${*$exp}{exp_Accum};
next if not defined $exp->fileno(); # skip already closed
${*$exp}{exp_Error} = $err unless ${*$exp}{exp_Error};
}
}
print STDERR ("TIMEOUT\r\n")
if ($Expect::Debug or $Expect::Exp_Internal);
if ($timeout_hook) {
my $ret;
print STDERR ("Calling timeout function $timeout_hook...\r\n")
if ($Expect::Debug or $Expect::Exp_Internal);
if (ref($timeout_hook) eq 'CODE') {
$ret = &{$timeout_hook}($_[0]->[0]);
} else {
if ($#{$timeout_hook} > 3) {
$ret = &{$timeout_hook->[3]}($_[0]->[0],
@{$timeout_hook}[4..$#{$timeout_hook}]);
} else {
$ret = &{$timeout_hook->[3]}($_[0]->[0]);
}
}
if ($ret and $ret eq exp_continue) {
$start_loop_time = time(); # restart timeout count
next READLOOP;
}
}
last READLOOP;
}
my @bits = split(//,unpack('b*',$rmask));
foreach my $pat (@_) {
foreach my $exp (@{$pat->[0]}) {
next if not defined $exp->fileno(); # skip already closed
if ($bits[$exp->fileno()]) {
print STDERR ("${*$exp}{exp_Pty_Handle}: new data.\r\n")
if $Expect::Debug;
# read in what we found.
my $buffer;
my $nread = sysread($exp, $buffer, 2048);
# Make errors (nread undef) show up as EOF.
$nread = 0 unless defined ($nread);
if ($nread == 0) {
print STDERR ("${*$exp}{exp_Pty_Handle}: EOF\r\n")
if ($Expect::Debug);
$before = ${*$exp}{exp_Before} = $exp->clear_accum();
$err = "2:EOF";
${*$exp}{exp_Error} = $err;
${*$exp}{exp_Has_EOF} = 1;
$exp_cont = undef;
foreach my $eof_pat (grep {$_->[1] eq '-eof'} @{$pat}[1..$#{$pat}]) {
my $ret;
print STDERR ("Calling EOF hook $eof_pat->[3]...\r\n",
) if ($Expect::Debug);
if ($#{$eof_pat} > 3) {
# call with parameters if given
$ret = &{$eof_pat->[3]}($exp,
@{$eof_pat}[4..$#{$eof_pat}]);
} else {
$ret = &{$eof_pat->[3]}($exp);
}
if ($ret and
($ret eq exp_continue
or $ret eq exp_continue_timeout)) {
$exp_cont = $ret;
}
}
# is it dead?
if (defined(${*$exp}{exp_Pid})) {
my $ret = waitpid(${*$exp}{exp_Pid}, POSIX::WNOHANG);
if ($ret == ${*$exp}{exp_Pid}) {
printf STDERR ("%s: exit(0x%02X)\r\n",
${*$exp}{exp_Pty_Handle}, $?)
if ($Expect::Debug);
$err = "3:Child PID ${*$exp}{exp_Pid} exited with status $?";
${*$exp}{exp_Error} = $err;
${*$exp}{exp_Exit} = $?;
delete $Expect::Spawned_PIDs{${*$exp}{exp_Pid}};
${*$exp}{exp_Pid} = undef;
}
}
print STDERR ("${*$exp}{exp_Pty_Handle}: closing...\r\n")
if ($Expect::Debug);
$exp->hard_close();
next;
}
print STDERR ("${*$exp}{exp_Pty_Handle}: read $nread byte(s).\r\n")
if ($Expect::Debug);
# ugly hack for broken solaris ttys that spew <blank><backspace>
# into our pretty output
$buffer =~ s/ \cH//g if not ${*$exp}{exp_Raw_Pty};
# Append it to the accumulator.
${*$exp}{exp_Accum} .= $buffer;
if (exists ${*$exp}{exp_Max_Accum}
and ${*$exp}{exp_Max_Accum}) {
${*$exp}{exp_Accum} =
$exp->_trim_length(${*$exp}{exp_Accum},
${*$exp}{exp_Max_Accum});
}
${*$exp}{exp_New_Data} = 1; # next round we try to match again
$exp_cont = exp_continue
if (exists ${*$exp}{exp_Continue} and ${*$exp}{exp_Continue});
# Now propagate what we have read to other listeners...
$exp->_print_handles($buffer);
# End handle reading section.
}
}
} # end read loop
$start_loop_time = time() # restart timeout count
if ($exp_cont and $exp_cont eq exp_continue);
}
# End READLOOP
# Post loop. Do we have anything?
# Tell us status
if ($Expect::Debug or $Expect::Exp_Internal) {
if ($exp_matched) {
print STDERR ("Returning from expect ",
${*$exp_matched}{exp_Error} ? 'un' : '',
"successfully.",
${*$exp_matched}{exp_Error} ?
"\r\n Error: ${*$exp_matched}{exp_Error}." : '',
"\r\n");
} else {
print STDERR ("Returning from expect with TIMEOUT or EOF\r\n");
}
if ($Expect::Debug and $exp_matched) {
print STDERR " ${*$exp_matched}{exp_Pty_Handle}: accumulator: `";
if (${*$exp_matched}{exp_Error}) {
print STDERR ($exp_matched->_trim_length
(_make_readable(${*$exp_matched}{exp_Before})),
"'\r\n");
} else {
print STDERR ($exp_matched->_trim_length
(_make_readable(${*$exp_matched}{exp_Accum})),
"'\r\n");
}
}
}
if ($exp_matched) {
return wantarray?
(${*$exp_matched}{exp_Match_Number},
${*$exp_matched}{exp_Error},
${*$exp_matched}{exp_Match},
${*$exp_matched}{exp_Before},
${*$exp_matched}{exp_After},
$exp_matched,
) :
${*$exp_matched}{exp_Match_Number};
}
return wantarray? (undef, $err, undef, $before, undef, undef) : undef;
}
# Patterns are arrays that consist of
# [ $pattern_type, $pattern, $sub, @subparms ]
# optional $pattern_type is '-re' (RegExp, default) or '-ex' (exact);
# $sub is optional CODE ref, which is called as &{$sub}($exp, @subparms)
# if pattern matched;
# the $parm_nr gets unshifted onto the array for reporting purposes.
sub _add_patterns_to_list($$$@) {
my $listref = shift;
my $timeoutlistref = shift; # gets timeout patterns
my $store_parm_nr = shift;
my $parm_nr = $store_parm_nr || 1;
foreach my $parm (@_) {
if (not ref($parm) eq 'ARRAY') {
return "Parameter #$parm_nr is not an ARRAY ref.";
}
$parm = [@$parm]; # make copy
if ($parm->[0] =~ m/\A-/) {
# it's an option
if ($parm->[0] ne '-re'
and $parm->[0] ne '-ex') {
return "Unknown option $parm->[0] in pattern #$parm_nr";
}
} else {
if ($parm->[0] eq 'timeout') {
if (defined $timeoutlistref) {
splice @$parm, 0, 1, ("-$parm->[0]", undef);
unshift @$parm, $store_parm_nr? $parm_nr: undef;
push @$timeoutlistref, $parm;
}
next;
} elsif ($parm->[0] eq 'eof') {
splice @$parm, 0, 1, ("-$parm->[0]", undef);
} else {
unshift @$parm, '-re'; # defaults to RegExp
}
}
if (@$parm > 2) {
if (ref($parm->[2]) ne 'CODE') {
croak ("Pattern #$parm_nr doesn't have a CODE reference",
"after the pattern.");
}
} else {
push @$parm, undef; # make sure we have three elements
}
unshift @$parm, $store_parm_nr? $parm_nr: undef;
push @$listref, $parm;
$parm_nr++
}
return undef;
}
######################################################################
# $process->interact([$in_handle],[$escape sequence])
# If you don't specify in_handle STDIN will be used.
sub interact {
my ($self) = (shift);
my ($infile) = (shift);
my ($escape_sequence) = shift;
my ($in_object,$in_handle,@old_group,$return_value);
my ($old_manual_stty_val,$old_log_stdout_val);
my ($outfile,$out_object);
@old_group = $self->set_group();
# If the handle is STDIN we'll
# $infile->fileno == 0 should be stdin.. follow stdin rules.
no strict 'subs'; # Allow bare word 'STDIN'
unless (defined($infile)) {
# We need a handle object Associated with STDIN.
$infile = new IO::File;
$infile->IO::File::fdopen(STDIN,'r');
$outfile = new IO::File;
$outfile->IO::File::fdopen(STDOUT,'w');
} elsif (fileno($infile) == fileno(STDIN)) {
# With STDIN we want output to go to stdout.
$outfile = new IO::File;
$outfile->IO::File::fdopen(STDOUT,'w');
} else {
undef ($outfile);
}
# Here we assure ourselves we have an Expect object.
$in_object = Expect->exp_init($infile);
if (defined($outfile)) {
# as above.. we want output to go to stdout if we're given stdin.
$out_object = Expect->exp_init($outfile);
$out_object->manual_stty(1);
$self->set_group($out_object);
} else {
$self->set_group($in_object);
}
$in_object->set_group($self);
$in_object->set_seq($escape_sequence,undef) if defined($escape_sequence);
# interconnect normally sets stty -echo raw. Interact really sort
# of implies we don't do that by default. If anyone wanted to they could
# set it before calling interact, of use interconnect directly.
$old_manual_stty_val = $self->manual_stty();
$self->manual_stty(1);
# I think this is right. Don't send stuff from in_obj to stdout by default.
# in theory whatever 'self' is should echo what's going on.
$old_log_stdout_val = $self->log_stdout();
$self->log_stdout(0);
$in_object->log_stdout(0);
# Allow for the setting of an optional EOF escape function.
# $in_object->set_seq('EOF',undef);
# $self->set_seq('EOF',undef);
Expect::interconnect($self,$in_object);
$self->log_stdout($old_log_stdout_val);
$self->set_group(@old_group);
# If old_group was undef, make sure that occurs. This is a slight hack since
# it modifies the value directly.
# Normally an undef passed to set_group will return the current groups.
# It is possible that it may be of worth to make it possible to undef
# The current group without doing this.
unless (@old_group) {
@{${*$self}{exp_Listen_Group}} = ();
}
$self->manual_stty($old_manual_stty_val);
return $return_value;
}
sub interconnect {
# my ($handle)=(shift); call as Expect::interconnect($spawn1,$spawn2,...)
my ($rmask,$nfound,$nread);
my ($rout, @bits, $emask, $eout, @ebits ) = ();
my ($escape_sequence,$escape_character_buffer);
my (@handles) = @_;
my ($handle,$read_handle,$write_handle);
my ($read_mask,$temp_mask) = ('','');
# Get read/write handles
foreach $handle (@handles) {
$temp_mask = '';
vec($temp_mask,$handle->fileno(),1) = 1;
# Under Linux w/ 5.001 the next line comes up w/ 'Uninit var.'.
# It appears to be impossible to make the warning go away.
# doing something like $temp_mask='' unless defined ($temp_mask)
# has no effect whatsoever. This may be a bug in 5.001.
$read_mask = $read_mask | $temp_mask;
}
if ($Expect::Debug) {
print STDERR "Read handles:\r\n";
foreach $handle (@handles) {
print STDERR "\tRead handle: ";
print STDERR "'${*$handle}{exp_Pty_Handle}'\r\n";
print STDERR "\t\tListen Handles:";
foreach $write_handle (@{${*$handle}{exp_Listen_Group}}) {
print STDERR " '${*$write_handle}{exp_Pty_Handle}'";
}
print STDERR ".\r\n";
}
}
# I think if we don't set raw/-echo here we may have trouble. We don't
# want a bunch of echoing crap making all the handles jabber at each other.
foreach $handle (@handles) {
unless (${*$handle}{"exp_Manual_Stty"}) {
# This is probably O/S specific.
${*$handle}{exp_Stored_Stty} = $handle->exp_stty('-g');
print STDERR "Setting tty for ${*$handle}{exp_Pty_Handle} to 'raw -echo'.\r\n"if ${*$handle}{"exp_Debug"};
$handle->exp_stty("raw -echo");
}
foreach $write_handle (@{${*$handle}{exp_Listen_Group}}) {
unless (${*$write_handle}{"exp_Manual_Stty"}) {
${*$write_handle}{exp_Stored_Stty} = $write_handle->exp_stty('-g');
print STDERR "Setting ${*$write_handle}{exp_Pty_Handle} to 'raw -echo'.\r\n"if ${*$handle}{"exp_Debug"};
$write_handle->exp_stty("raw -echo");
}
}
}
print STDERR "Attempting interconnection\r\n" if $Expect::Debug;
# Wait until the process dies or we get EOF
# In the case of !${*$handle}{exp_Pid} it means
# the handle was exp_inited instead of spawned.
CONNECT_LOOP:
# Go until we have a reason to stop
while (1) {
# test each handle to see if it's still alive.
foreach $read_handle (@handles) {
waitpid(${*$read_handle}{exp_Pid}, WNOHANG)
if (exists (${*$read_handle}{exp_Pid}) and ${*$read_handle}{exp_Pid});
if (exists(${*$read_handle}{exp_Pid})
and (${*$read_handle}{exp_Pid})
and (! kill(0,${*$read_handle}{exp_Pid}))) {
print STDERR "Got EOF (${*$read_handle}{exp_Pty_Handle} died) reading ${*$read_handle}{exp_Pty_Handle}\r\n"
if ${*$read_handle}{"exp_Debug"};
last CONNECT_LOOP unless defined(${${*$read_handle}{exp_Function}}{"EOF"});
last CONNECT_LOOP unless &{${${*$read_handle}{exp_Function}}{"EOF"}}(@{${${*$read_handle}{exp_Parameters}}{"EOF"}});
}
}
# Every second? No, go until we get something from someone.
($nfound) = select($rout = $read_mask, undef, $eout = $emask, undef);
# Is there anything to share? May be -1 if interrupted by a signal...
next CONNECT_LOOP if not defined $nfound or $nfound < 1;
# Which handles have stuff?
@bits = split(//,unpack('b*',$rout));
$eout = 0 unless defined ($eout);
@ebits = split(//,unpack('b*',$eout));
# print "Ebits: $eout\r\n";
foreach $read_handle (@handles) {
if ($bits[$read_handle->fileno()]) {
$nread = sysread( $read_handle, ${*$read_handle}{exp_Pty_Buffer}, 1024 );
# Appease perl -w
$nread = 0 unless defined ($nread);
print STDERR "interconnect: read $nread byte(s) from ${*$read_handle}{exp_Pty_Handle}.\r\n" if ${*$read_handle}{"exp_Debug"} > 1;
# Test for escape seq. before printing.
# Appease perl -w
$escape_character_buffer = '' unless defined ($escape_character_buffer);
$escape_character_buffer .= ${*$read_handle}{exp_Pty_Buffer};
foreach $escape_sequence (keys(%{${*$read_handle}{exp_Function}})) {
print STDERR "Tested escape sequence $escape_sequence from ${*$read_handle}{exp_Pty_Handle}"if ${*$read_handle}{"exp_Debug"} > 1;
# Make sure it doesn't grow out of bounds.
$escape_character_buffer = $read_handle->_trim_length($escape_character_buffer,${*$read_handle}{"exp_Max_Accum"}) if (${*$read_handle}{"exp_Max_Accum"});
if ($escape_character_buffer =~ /($escape_sequence)/) {
if (${*$read_handle}{"exp_Debug"}) {
print STDERR "\r\ninterconnect got escape sequence from ${*$read_handle}{exp_Pty_Handle}.\r\n";
# I'm going to make the esc. seq. pretty because it will
# probably contain unprintable characters.
print STDERR "\tEscape Sequence: '"._trim_length(undef,_make_readable($escape_sequence))."'\r\n";
print STDERR "\tMatched by string: '"._trim_length(undef,_make_readable($&))."'\r\n";
}
# Print out stuff before the escape.
# Keep in mind that the sequence may have been split up
# over several reads.
# Let's get rid of it from this read. If part of it was
# in the last read there's not a lot we can do about it now.
if (${*$read_handle}{exp_Pty_Buffer} =~ /($escape_sequence)/) {
$read_handle->_print_handles($`);
} else {
$read_handle->_print_handles(${*$read_handle}{exp_Pty_Buffer})
}
# Clear the buffer so no more matches can be made and it will
# only be printed one time.
${*$read_handle}{exp_Pty_Buffer} = '';
$escape_character_buffer = '';
# Do the function here. Must return non-zero to continue.
# More cool syntax. Maybe I should turn these in to objects.
last CONNECT_LOOP unless &{${${*$read_handle}{exp_Function}}{$escape_sequence}}(@{${${*$read_handle}{exp_Parameters}}{$escape_sequence}});
}
}
$nread = 0 unless defined($nread); # Appease perl -w?
waitpid(${*$read_handle}{exp_Pid}, WNOHANG) if (defined (${*$read_handle}{exp_Pid}) &&${*$read_handle}{exp_Pid});
if ($nread == 0) {
print STDERR "Got EOF reading ${*$read_handle}{exp_Pty_Handle}\r\n"if ${*$read_handle}{"exp_Debug"};
last CONNECT_LOOP unless defined(${${*$read_handle}{exp_Function}}{"EOF"});
last CONNECT_LOOP unless &{${${*$read_handle}{exp_Function}}{"EOF"}}(@{${${*$read_handle}{exp_Parameters}}{"EOF"}});
}
last CONNECT_LOOP if ($nread < 0); # This would be an error
$read_handle->_print_handles(${*$read_handle}{exp_Pty_Buffer});
}
# I'm removing this because I haven't determined what causes exceptions
# consistently.
if (0) #$ebits[$read_handle->fileno()])
{
print STDERR "Got Exception reading ${*$read_handle}{exp_Pty_Handle}\r\n"if ${*$read_handle}{"exp_Debug"};
last CONNECT_LOOP unless defined(${${*$read_handle}{exp_Function}}{"EOF"});
last CONNECT_LOOP unless &{${${*$read_handle}{exp_Function}}{"EOF"}}(@{${${*$read_handle}{exp_Parameters}}{"EOF"}});
}
}
}
foreach $handle (@handles) {
unless (${*$handle}{"exp_Manual_Stty"}) {
$handle->exp_stty(${*$handle}{exp_Stored_Stty});
}
foreach $write_handle (@{${*$handle}{exp_Listen_Group}}) {
unless (${*$write_handle}{"exp_Manual_Stty"}) {
$write_handle->exp_stty(${*$write_handle}{exp_Stored_Stty});
}
}
}
}
# user can decide if log output gets also sent to logfile
sub print_log_file {
my $self = shift;
if (${*$self}{exp_Log_File}) {
if (ref(${*$self}{exp_Log_File}) eq 'CODE') {
${*$self}{exp_Log_File}->(@_);
} else {
${*$self}{exp_Log_File}->print(@_);
}
}
}
# we provide our own print so we can debug what gets sent to the
# processes...
sub print (@) {
my ($self, @args) = @_;
return if not defined $self->fileno(); # skip if closed
if (${*$self}{exp_Exp_Internal}) {
my $args = _make_readable(join('', @args));
cluck "Sending '$args' to ${*$self}{exp_Pty_Handle}\r\n";
}
foreach my $arg (@args) {
while (length($arg) > 80) {
$self->SUPER::print(substr($arg, 0, 80));
$arg = substr($arg, 80);
}
$self->SUPER::print($arg);
}
}
# make an alias for Tcl/Expect users for a DWIM experience...
*send = \&print;
# This is an Expect standard. It's nice for talking to modems and the like
# where from time to time they get unhappy if you send items too quickly.
sub send_slow{
my ($self) = shift;
my($char,@linechars,$nfound,$rmask);
return if not defined $self->fileno(); # skip if closed
my($sleep_time) = shift;
# Flushing makes it so each character can be seen separately.
my $chunk;
while ($chunk = shift) {
@linechars = split ('', $chunk);
foreach $char (@linechars) {
# How slow?
select (undef,undef,undef,$sleep_time);
print $self $char;
print STDERR "Printed character \'"._make_readable($char)."\' to ${*$self}{exp_Pty_Handle}.\r\n" if ${*$self}{"exp_Debug"} > 1;
# I think I can get away with this if I save it in accum
if (${*$self}{"exp_Log_Stdout"} ||${*$self}{exp_Log_Group}) {
$rmask = "";
vec($rmask,$self->fileno(),1) = 1;
# .01 sec granularity should work. If we miss something it will
# probably get flushed later, maybe in an expect call.
while (select($rmask,undef,undef,.01)) {
my $ret = sysread($self,${*$self}{exp_Pty_Buffer},1024);
last if not defined $ret or $ret == 0;
# Is this necessary to keep? Probably.. #
# if you need to expect it later.
${*$self}{exp_Accum}.= ${*$self}{exp_Pty_Buffer};
${*$self}{exp_Accum} = $self->_trim_length(${*$self}{exp_Accum},${*$self}{"exp_Max_Accum"}) if (${*$self}{"exp_Max_Accum"});
$self->_print_handles(${*$self}{exp_Pty_Buffer});
print STDERR "Received \'".$self->_trim_length(_make_readable($char))."\' from ${*$self}{exp_Pty_Handle}\r\n" if ${*$self}{"exp_Debug"} > 1;
}
}
}
}
}
sub test_handles {
# This should be called by Expect::test_handles($timeout,@objects);
my ($rmask, $allmask, $rout, $nfound, @bits);
my ($timeout) = shift;
my (@handle_list) = @_;
my($handle);
foreach $handle (@handle_list) {
$rmask = '';
vec($rmask,$handle->fileno(),1) = 1;
$allmask = '' unless defined ($allmask);
$allmask = $allmask | $rmask;
}
($nfound) = select($rout = $allmask, undef, undef, $timeout);
return () unless $nfound;
# Which handles have stuff?
@bits = split(//,unpack('b*',$rout));
my $handle_num = 0;
my @return_list = ();
foreach $handle (@handle_list) {
# I go to great lengths to get perl -w to shut the hell up.
if (defined($bits[$handle->fileno()]) and ($bits[$handle->fileno()])) {
push(@return_list,$handle_num);
}
} continue {
$handle_num++;
}
return (@return_list);
}
# Be nice close. This should emulate what an interactive shell does after a
# command finishes... sort of. We're not as patient as a shell.
sub soft_close {
my($self) = shift;
my($nfound,$nread,$rmask,$returned_pid);
my($end_time,$select_time,$temp_buffer);
my($close_status);
# Give it 15 seconds to cough up an eof.
cluck "Closing ${*$self}{exp_Pty_Handle}.\r\n" if ${*$self}{exp_Debug};
return -1 if not defined $self->fileno(); # skip if handle already closed
unless (exists ${*$self}{exp_Has_EOF} and ${*$self}{exp_Has_EOF}) {
$end_time = time() + 15;
while ($end_time > time()) {
$select_time = $end_time - time();
# Sanity check.
$select_time = 0 if $select_time < 0;
$rmask = '';
vec($rmask,$self->fileno(),1) = 1;
($nfound) = select($rmask,undef,undef,$select_time);
last unless (defined($nfound) && $nfound);
$nread = sysread($self,$temp_buffer,8096);
# 0 = EOF.
unless (defined($nread) && $nread) {
print STDERR "Got EOF from ${*$self}{exp_Pty_Handle}.\r\n" if ${*$self}{exp_Debug};
last;
}
$self->_print_handles($temp_buffer);
}
if (($end_time <= time()) && ${*$self}{exp_Debug}) {
print STDERR "Timed out waiting for an EOF from ${*$self}{exp_Pty_Handle}.\r\n";
}
}
if ( ($close_status = $self->close()) && ${*$self}{exp_Debug}) {
print STDERR "${*$self}{exp_Pty_Handle} closed.\r\n";
}
# quit now if it isn't a process.
return $close_status unless defined(${*$self}{exp_Pid});
# Now give it 15 seconds to die.
$end_time = time() + 15;
while ($end_time > time()) {
$returned_pid = waitpid(${*$self}{exp_Pid}, &WNOHANG);
# Stop here if the process dies.
if (defined($returned_pid) && $returned_pid) {
delete $Expect::Spawned_PIDs{$returned_pid};
if (${*$self}{exp_Debug}) {
printf STDERR ("Pid %d of %s exited, Status: 0x%02X\r\n",
${*$self}{exp_Pid}, ${*$self}{exp_Pty_Handle}, $?);
}
${*$self}{exp_Pid} = undef;
${*$self}{exp_Exit} = $?;
return ${*$self}{exp_Exit};
}
sleep 1; # Keep loop nice.
}
# Send it a term if it isn't dead.
if (${*$self}{exp_Debug}) {
print STDERR "${*$self}{exp_Pty_Handle} not exiting, sending TERM.\r\n";
}
kill TERM => ${*$self}{exp_Pid};
# Now to be anal retentive.. wait 15 more seconds for it to die.
$end_time = time() + 15;
while ($end_time > time()) {
$returned_pid = waitpid(${*$self}{exp_Pid}, &WNOHANG);
if (defined($returned_pid) && $returned_pid) {
delete $Expect::Spawned_PIDs{$returned_pid};
if (${*$self}{exp_Debug}) {
printf STDERR ("Pid %d of %s terminated, Status: 0x%02X\r\n",
${*$self}{exp_Pid}, ${*$self}{exp_Pty_Handle}, $?);
}
${*$self}{exp_Pid} = undef;
${*$self}{exp_Exit} = $?;
return $?;
}
sleep 1;
}
# Since this is a 'soft' close, sending it a -9 would be inappropriate.
return undef;
}
# 'Make it go away' close.
sub hard_close {
my($self) = shift;
my($nfound,$nread,$rmask,$returned_pid);
my($end_time,$select_time,$temp_buffer);
my($close_status);
cluck "Closing ${*$self}{exp_Pty_Handle}.\r\n" if ${*$self}{exp_Debug};
# Don't wait for an EOF.
if ( ($close_status = $self->close()) && ${*$self}{exp_Debug}) {
print STDERR "${*$self}{exp_Pty_Handle} closed.\r\n";
}
# Return now if handle.
return $close_status unless defined(${*$self}{exp_Pid});
# Now give it 5 seconds to die. Less patience here if it won't die.
$end_time = time() + 5;
while ($end_time > time()) {
$returned_pid = waitpid(${*$self}{exp_Pid}, &WNOHANG);
# Stop here if the process dies.
if (defined($returned_pid) && $returned_pid) {
delete $Expect::Spawned_PIDs{$returned_pid};
if (${*$self}{exp_Debug}) {
printf STDERR ("Pid %d of %s terminated, Status: 0x%02X\r\n",
${*$self}{exp_Pid}, ${*$self}{exp_Pty_Handle}, $?);
}
${*$self}{exp_Pid} = undef;
${*$self}{exp_Exit} = $?;
return ${*$self}{exp_Exit};
}
sleep 1; # Keep loop nice.
}
# Send it a term if it isn't dead.
if (${*$self}{exp_Debug}) {
print STDERR "${*$self}{exp_Pty_Handle} not exiting, sending TERM.\r\n";
}
kill TERM => ${*$self}{exp_Pid};
# wait 15 more seconds for it to die.
$end_time = time() + 15;
while ($end_time > time()) {
$returned_pid = waitpid(${*$self}{exp_Pid}, &WNOHANG);
if (defined($returned_pid) && $returned_pid) {
delete $Expect::Spawned_PIDs{$returned_pid};
if (${*$self}{exp_Debug}) {
printf STDERR ("Pid %d of %s terminated, Status: 0x%02X\r\n",
${*$self}{exp_Pid}, ${*$self}{exp_Pty_Handle}, $?);
}
${*$self}{exp_Pid} = undef;
${*$self}{exp_Exit} = $?;
return ${*$self}{exp_Exit};
}
sleep 1;
}
kill KILL => ${*$self}{exp_Pid};
# wait 5 more seconds for it to die.
$end_time = time() + 5;
while ($end_time > time()) {
$returned_pid = waitpid(${*$self}{exp_Pid}, &WNOHANG);
if (defined($returned_pid) && $returned_pid) {
delete $Expect::Spawned_PIDs{$returned_pid};
if (${*$self}{exp_Debug}) {
printf STDERR ("Pid %d of %s killed, Status: 0x%02X\r\n",
${*$self}{exp_Pid}, ${*$self}{exp_Pty_Handle}, $?);
}
${*$self}{exp_Pid} = undef;
${*$self}{exp_Exit} = $?;
return ${*$self}{exp_Exit};
}
sleep 1;
}
warn "Pid ${*$self}{exp_Pid} of ${*$self}{exp_Pty_Handle} is HUNG.\r\n";
${*$self}{exp_Pid} = undef;
return undef;
}
# These should not be called externally.
sub _init_vars {
my($self) = shift;
# for every spawned process or filehandle.
${*$self}{exp_Log_Stdout} = $Expect::Log_Stdout
if defined ($Expect::Log_Stdout);
${*$self}{exp_Log_Group} = $Expect::Log_Group;
${*$self}{exp_Debug} = $Expect::Debug;
${*$self}{exp_Exp_Internal} = $Expect::Exp_Internal;
${*$self}{exp_Manual_Stty} = $Expect::Manual_Stty;
${*$self}{exp_Stored_Stty} = 'sane';
${*$self}{exp_Do_Soft_Close} = $Expect::Do_Soft_Close;
# sysread doesn't like my or local vars.
${*$self}{exp_Pty_Buffer} = '';
# Initialize accumulator.
${*$self}{exp_Max_Accum} = $Expect::Exp_Max_Accum;
${*$self}{exp_Accum} = '';
${*$self}{exp_NoTransfer} = 0;
# create empty expect_before & after lists
${*$self}{exp_expect_before_list} = [];
${*$self}{exp_expect_after_list} = [];
}
sub _make_readable {
my $s = shift;
$s = '' if not defined ($s);
study $s; # Speed things up?
$s =~ s/\\/\\\\/g; # So we can tell easily(?) what is a backslash
$s =~ s/\n/\\n/g;
$s =~ s/\r/\\r/g;
$s =~ s/\t/\\t/g;
$s =~ s/\'/\\\'/g; # So we can tell whassa quote and whassa notta quote.
$s =~ s/\"/\\\"/g;
# Formfeed (does anyone use formfeed?)
$s =~ s/\f/\\f/g;
$s =~ s/\010/\\b/g;
# escape control chars high/low, but allow ISO 8859-1 chars
$s =~ s/[\000-\037\177-\237\377]/sprintf("\\%03lo",ord($&))/ge;
return $s;
}
sub _trim_length {
# This is sort of a reverse truncation function
# Mostly so we don't have to see the full output when we're using
# Also used if Max_Accum gets set to limit the size of the accumulator
# for matching functions.
# exp_internal
my($self) = shift;
my($string) = shift;
my($length) = shift;
# If we're not passed a length (_trim_length is being used for debugging
# purposes) AND debug >= 3, don't trim.
return($string) if (defined ($self) and
${*$self}{"exp_Debug"} >= 3 and (!(defined($length))));
my($indicate_truncation) = '...' unless $length;
$length = 1021 unless $length;
return($string) unless $length < length($string);
# We wouldn't want the accumulator to begin with '...' if max_accum is passed
# This is because this funct. gets called internally w/ max_accum
# and is also used to print information back to the user.
return $indicate_truncation.substr($string,(length($string) - $length),$length);
}
sub _print_handles {
# Given crap from 'self' and the handles self wants to print to, print to
# them. these are indicated by the handle's 'group'
my($self) = shift;
my($print_this) = shift;
my($handle);
if (${*$self}{exp_Log_Group}) {
foreach $handle (@{${*$self}{exp_Listen_Group}}) {
$print_this = '' unless defined ($print_this);
# Appease perl -w
print STDERR "Printed '".$self->_trim_length(_make_readable($print_this))."' to ${*$handle}{exp_Pty_Handle} from ${*$self}{exp_Pty_Handle}.\r\n" if (${*$handle}{"exp_Debug"} > 1);
print $handle $print_this;
}
}
# If ${*$self}{exp_Pty_Handle} is STDIN this would make it echo.
print STDOUT $print_this
if ${*$self}{"exp_Log_Stdout"};
$self->print_log_file($print_this);
$|= 1; # This should not be necessary but autoflush() doesn't always work.
}
sub _get_mode {
my($fcntl_flags) = '';
my($handle) = shift;
# What mode are we opening with? use fcntl to find out.
$fcntl_flags = fcntl(\*{$handle},Fcntl::F_GETFL,$fcntl_flags);
die "fcntl returned undef during exp_init of $handle, $!\r\n" unless defined($fcntl_flags);
if ($fcntl_flags | (Fcntl::O_RDWR)) {
return 'rw';
} elsif ($fcntl_flags | (Fcntl::O_WRONLY)) {
return 'w'
} else {
# Under Solaris (among others?) O_RDONLY is implemented as 0. so |O_RDONLY would fail.
return 'r';
}
}
sub _undef {
return undef;
# Seems a little retarded but &CORE::undef fails in interconnect.
# This is used for the default escape sequence function.
# w/out the leading & it won't compile.
}
# clean up child processes
sub DESTROY {
my $status = $?; # save this as it gets mangled by the terminating spawned children
my $self = shift;
if (${*$self}{exp_Do_Soft_Close}) {
$self->soft_close();
}
$self->hard_close();
$? = $status; # restore it. otherwise deleting an Expect object may mangle $?, which is unintuitive
}
1;