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https://gitlab.com/exectek/rancid-git
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#! @PERLV_PATH@
##
## $Id: f10rancid.in 2279 2011-01-31 22:41:00Z heas $
##
## @PACKAGE@ @VERSION@
## Copyright (c) 1997-2008 by Terrapin Communications, Inc.
## All rights reserved.
##
## This code is derived from software contributed to and maintained by
## Terrapin Communications, Inc. by Henry Kilmer, John Heasley, Andrew Partan,
## Pete Whiting, Austin Schutz, and Andrew Fort.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions
## are met:
## 1. Redistributions of source code must retain the above copyright
##    notice, this list of conditions and the following disclaimer.
## 2. Redistributions in binary form must reproduce the above copyright
##    notice, this list of conditions and the following disclaimer in the
##    documentation and/or other materials provided with the distribution.
## 3. All advertising materials mentioning features or use of this software
##    must display the following acknowledgement:
##        This product includes software developed by Terrapin Communications,
##        Inc. and its contributors for RANCID.
## 4. Neither the name of Terrapin Communications, Inc. nor the names of its
##    contributors may be used to endorse or promote products derived from
##    this software without specific prior written permission.
## 5. It is requested that non-binding fixes and modifications be contributed
##    back to Terrapin Communications, Inc.
##
## THIS SOFTWARE IS PROVIDED BY Terrapin Communications, INC. AND CONTRIBUTORS
## ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
## TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COMPANY OR CONTRIBUTORS
## BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
## CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
## SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
## INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
## ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
## POSSIBILITY OF SUCH DAMAGE.
#
# This version of rancid tries to deal with Force10s.
#
#  RANCID - Really Awesome New Cisco confIg Differ
#
# usage: rancid [-dV] [-l] [-f filename | hostname]
#
use Getopt::Std;
getopts('dflV');
if ($opt_V) {
    print "@PACKAGE@ @VERSION@\n";
    exit(0);
}
$log = $opt_l;
$debug = $opt_d;
$file = $opt_f;
$host = $ARGV[0];
$clean_run = 0;
$found_end = 0;
$timeo = 90;				# clogin timeout in seconds

my(@commandtable, %commands, @commands);# command lists
my($aclsort) = ("ipsort");		# ACL sorting mode
my($filter_commstr);			# SNMP community string filtering
my($filter_pwds);			# password filtering mode

# This routine is used to print out the router configuration
sub ProcessHistory {
    my($new_hist_tag,$new_command,$command_string,@string) = (@_);
    if ((($new_hist_tag ne $hist_tag) || ($new_command ne $command))
	&& scalar(%history)) {
	print eval "$command \%history";
	undef %history;
    }
    if (($new_hist_tag) && ($new_command) && ($command_string)) {
	if ($history{$command_string}) {
	    $history{$command_string} = "$history{$command_string}@string";
	} else {
	    $history{$command_string} = "@string";
	}
    } elsif (($new_hist_tag) && ($new_command)) {
	$history{++$#history} = "@string";
    } else {
	print "@string";
    }
    $hist_tag = $new_hist_tag;
    $command = $new_command;
    1;
}

sub numerically { $a <=> $b; }

# This is a sort routine that will sort numerically on the
# keys of a hash as if it were a normal array.
sub keynsort {
    local(%lines) = @_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort numerically keys(%lines)) {
	$sorted_lines[$i] = $lines{$key};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routine that will sort on the
# keys of a hash as if it were a normal array.
sub keysort {
    local(%lines) = @_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort keys(%lines)) {
	$sorted_lines[$i] = $lines{$key};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routine that will sort on the
# values of a hash as if it were a normal array.
sub valsort{
    local(%lines) = @_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $key (sort values %lines) {
	$sorted_lines[$i] = $key;
	$i++;
    }
    @sorted_lines;
}

# This is a numerical sort routine (ascending).
sub numsort {
    local(%lines) = @_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $num (sort {$a <=> $b} keys %lines) {
	$sorted_lines[$i] = $lines{$num};
	$i++;
    }
    @sorted_lines;
}

# This is a sort routine that will sort on the
# ip address when the ip address is anywhere in
# the strings.
sub ipsort {
    local(%lines) = @_;
    local($i) = 0;
    local(@sorted_lines);
    foreach $addr (sort sortbyipaddr keys %lines) {
	$sorted_lines[$i] = $lines{$addr};
	$i++;
    }
    @sorted_lines;
}

# These two routines will sort based upon IP addresses
sub ipaddrval {
    my(@a) = ($_[0] =~ m#^(\d+)\.(\d+)\.(\d+)\.(\d+)$#);
    $a[3] + 256 * ($a[2] + 256 * ($a[1] +256 * $a[0]));
}
sub sortbyipaddr {
    &ipaddrval($a) <=> &ipaddrval($b);
}

# This routine parses "show version"
sub ShowVersion {
    print STDERR "    In ShowVersion: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if(/^$prompt/);
	next if(/^(\s*|\s*$cmd\s*)$/);
	return(-1) if (/command authorization failed/i);

	/ Type: / && chop && chop &&
	    ProcessHistory("COMMENTS","keysort","A1", "!$_\n");

	/^.* Version.*$/ &&
	    ProcessHistory("COMMENTS","keysort","F1", "!Image: $_") && next;

	/^Build .*$/ &&
	    ProcessHistory("COMMENTS","keysort","F1", "!Image: $_") && next;

	/^System image file is "([^\"]*)"$/ &&
	    ProcessHistory("COMMENTS","keysort","F5", "!Image: $1\n") && next;

	if (/^(.*\s+Processor)( \d)?:(.*) with (\d+[kK]?) bytes/) {
	    my($cpu) = "$1$2:$3";
	    my($mem) = int($4 / (1024 * 1024));
	    my($device) = "Force10";
	    ProcessHistory("COMMENTS","keysort","B1",
			   "!Memory: $1$2: $mem" . "M\n");
	    ProcessHistory("COMMENTS","keysort","A3","!CPU: $cpu\n");
	    next;
	}

	# E-Series and C-Series use NVRAM
	/^(\d+[kK]) bytes of non-volatile/ &&
	    ProcessHistory("COMMENTS","keysort","B3", "!Memory: NVRAM $1\n") &&
	    next;
	# S-Series uses boot flash
	/^(\d+[mM]) bytes of .oot..lash/ &&
	    ProcessHistory("COMMENTS","keysort","B3", "!Memory: Flash $1\n") &&
	    next;
    }
    return(0);
}

# This routine parses "show boot"
sub ShowBoot {
    print STDERR "    In ShowBoot: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /(Invalid input|Type help or )/;
	return(1) if /( *\^$)/;
	return(-1) if (/command authorization failed/i);
	
	ProcessHistory("COMMENTS","keysort","H0","!Boot Variables: $_");
    }
    ProcessHistory("COMMENTS","","","!\n");
    return(0);
}

# This routine parses "show chassis"
sub ShowChassis {
    print STDERR "    In ShowChassis: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /(Invalid input|Type help or )/;
	return(1) if /( *\^$)/;
	return(-1) if (/command authorization failed/i);

	/-----------------------------/ && next;
	# general stuff that changes
	/Next Boot/ && next;
	/Up Time/ && next;
	/Last Restart/ && next;
	/Switch Fabric State/ && next;
	/active / && next;
	/online / && next;
	/offline / && next;
	# E600 AC PSMs
	/Status        : up/ && next;
	/High line/ && next;
	if (/Power\s+Supplies/i) {
	ProcessHistory("COMMENTS","keysort","CHASSIS","!Chassis: $_");
	while(<INPUT>) {
		tr/\015//d;
		last if (/^$/);
		# remove any trailing WS
		s/\s+$//;
		next if (/^----+$/);
		# S4048-ON
		/^(Unit\s+Bay\s+Status\s+Type\s+FanStatus)\s+FanSpeed/ && ProcessHistory("COMMENTS",
			keysort","CHASSIS","!Chassis: $1\n") &&
			next;
		/^(\s+\d+\s+\d+\s+(absent|\S+\s+\S+)\s+\S+)\s+\d+/ &&
			ProcessHistory("COMMENTS","keysort","CHASSIS",
			"!Chassis: $1\n") && next;
		# S4810
		/^(Unit\s+Bay\s+Status\s+Type\s+FanStatus)/ && ProcessHistory("COMMENTS",
			"keysort","CHASSIS","!Chassis: $1\n") &&
			next;
		/^(\s+\d+\s+\d+\s+(absent|\S+\s+\S+)\s+\S+)/ &&
			ProcessHistory("COMMENTS","keysort","CHASSIS",
			"!Chassis: $1\n") && next;
		print STDERR "    In ShowChassis: $_" if ($debug);
		)

	}

	# fans
	if (/Fan\s+Status/i) {
	    ProcessHistory("COMMENTS","keysort","CHASSIS","!Chassis: $_");

	    while (<INPUT>) {
		tr/\015//d;
		if (/^$prompt/) {
		    goto OUT;
		}
		last if (/^$/);
		# remove any trailing WS
		s/\s+$//;
		next if (/^----+$/);
		# c150 / c300 style
		/FanNumber\s+Speed\s+Status/ && ProcessHistory("COMMENTS",
		    "keysort","CHASSIS","!Chassis: FanNumber\tStatus\n") &&
		    next;
		/^\s+(\d)\s+\d+\s+(\S+)/ && ProcessHistory("COMMENTS",
		    "keysort","CHASSIS","!Chassis: $1\t\t$2\n") && next;
		# e300
		/^Status\s+$/ && next;
		/^\s+(\S+)\s*$/ && ProcessHistory("COMMENTS","keysort",
		    "CHASSIS","!Chassis: $1\n") && next;
		# e600 style
		/Status\s+Temp\s+Fan1\s+Fan2\s+Fan3\s+Serial\s/ && next;
		/^\s+(\S+)\s+\d+C\s+\d+ RPM\s+/ && ProcessHistory("COMMENTS",
		    "keysort","CHASSIS","!Chassis: $1\n") && next;
		# e1200 style
		/Tray\s+Status\s+Temp\s+/ && ProcessHistory("COMMENTS",
		    "keysort","CHASSIS","!Chassis: Tray\tStatus\n") &&
		    next;
		/^\s+(\d+)\s+(\S+)\s+(or down|(< )?\d+C\s+)/ &&
		    ProcessHistory("COMMENTS","keysort","CHASSIS",
		    "!Chassis: $1\t$2\n") && next;
		# s50n / s50v style
		if (/Unit\s+TrayStatus\s+Fan0\s+Fan1\s+/) {
		    ProcessHistory("COMMENTS","keysort","CHASSIS",
		    "!Chassis: $_\n");
		    # consume the following blank/separator line
		    $_ = <INPUT>;
		    # the s50n botches its fan status line with the "---..."
		    # separator line w/o a CR, followed by the fan status.  we
		    # would normally skip the sparator line, so hack it.
		    s/^------+(\s+)/$1/;
		    tr/\015//d;
		    # the s50v has a blank line following the table header,
		    # loop for that one and continue for the S50n
		    /^\s+$/ && next;
		}
		/^\s+\d+\s+\S+\s+\S+\s+\S+\s+\S+\s+/ &&
		    ProcessHistory("COMMENTS","keysort","CHASSIS",
		    "!Chassis: $_") && next;
	    }
	    next;
	}
	ProcessHistory("COMMENTS","keysort","CHASSIS","!Chassis: $_");
    }
OUT:
    ProcessHistory("COMMENTS","keysort","CHASSIS","!\n");
    return(0);
}

# This routine parses "dir /all (flash|slotN):"
sub DirSlotN {
    print STDERR "    In DirSlotN: $_" if ($debug);

    my($dev) = (/\s([^\s]+):/);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# return(1) if ($type !~ /^(12[40]|7|36)/);
	return(1) if /^\s*\^\s*$/;
	return(1) if /(Invalid input|Type help or )/;
	return(1) if /No such device/i;
	return(1) if /\% ?Error: No such file or directory/;

	return(1) if /\% ?Error: The file device is not present/;
	return(1) if /\% ?Error: The specified file or directory does not exist/;
	return(1) if /No space information available/;
	return(-1) if (/command authorization failed/i);
	return(1) if /(Open device \S+ failed|Error opening \S+:)/;

	/Directory of/ && next;
	# . & ..
	/ \.{1,2}\s+$/ && next;

	# clean up totals line
	if (/.* (\d+) bytes total/) {
	    my($tmp) = int($1 / (1024 * 1024));
	    s/.* $1 bytes total/$tmp\M total/;
	}
	if (/.*\((\d+) bytes free\)/) {
	    my($tmp) = int($1 / (1024 * 1024));
	    s/$1 bytes free/$tmp\M free/;
	}
	s/ +$//g;
	ProcessHistory("FLASH","","","!Flash: $dev: $_");
    }
    ProcessHistory("","","","!\n");
    return(0);
}

# This routine parses "show inventory"
sub ShowInventory {
    print STDERR "    In ShowInventory: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /(Invalid input|Type help or )/;
	return(-1) if (/command authorization failed/i);

	/-----------------------------/ && next;
	ProcessHistory("COMMENTS","keysort","INVENTORY","!Inventory: $_");
    }
    ProcessHistory("COMMENTS","keysort","INVENTORY","!\n");
    return(0);
}

# This routine parses "show vlan"
sub ShowVLAN {
    print STDERR "    In ShowVLAN: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /(Invalid input|Type help or )/;
	return(-1) if (/command authorization failed/i);
	ProcessHistory("COMMENTS","keysort","VLAN","!VLAN: $_");
    }
    ProcessHistory("COMMENTS","keysort","VLAN","!\n");
    return(0);
}

# This routine processes a "write term"
sub WriteTerm {
    print STDERR "    In WriteTerm: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if(/^$prompt/);
	return(-1) if (/command authorization failed/i);
	# skip crap
 	/^Current Configuration/ && next;

	# Dog gone Cool matches to process the rest of the config
	/^tftp-server flash /   && next; # kill any tftp remains
	/^ntp clock-period /    && next; # kill ntp clock-period
	/^ length /		&& next; # kill length on serial lines
	/^ width /		&& next; # kill width on serial lines
	/^ clockrate /		&& next; # kill clockrate on serial interfaces
	if (/^(enable )?(password|passwd) / && $filter_pwds >= 1) {
	    ProcessHistory("ENABLE","","","!$1$2 <removed>\n");
	    next;
	}
	if (/^(enable secret) / && $filter_pwds >= 2) {
	    ProcessHistory("ENABLE","","","!$1 <removed>\n");
	    next;
	}
	if (/^(enable restricted) / && $filter_pwds >= 2) {
	    ProcessHistory("ENABLE","","","!$1 <removed>\n");
	    next;
	}
	if (/^username (\S+)(\s.*)? secret /) {
	    if ($filter_pwds >= 2) {
		ProcessHistory("USER","keysort","$1","!username $1$2 secret <removed>\n");
	    } else {
		ProcessHistory("USER","keysort","$1","$_");
	    }
	    next;
	}
	if (/^username (\S+)(\s.*)? password ((\d) \S+|\S+)/) {
	    if ($filter_pwds == 2) {
		ProcessHistory("USER","keysort","$1","!username $1$2 password <removed>\n");
	    } elsif ($filter_pwds == 1 && $4 ne "5"){
		ProcessHistory("USER","keysort","$1","!username $1$2 password <removed>\n");
	    } else {
		ProcessHistory("USER","keysort","$1","$_");
	    }
	    next;
	}
	if (/^(\s*)password / && $filter_pwds >= 1) {
	    ProcessHistory("LINE-PASS","","","!$1password <removed>\n");
	    next;
	}
	if (/^\s*neighbor (\S*) password / && $filter_pwds >= 1) {
	    ProcessHistory("","","","! neighbor $1 password <removed>\n");
	    next;
	}
	if (/^(ip ftp password) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^(ftp-server username.*password) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^( ip ospf authentication-key) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# this is reversable, despite 'md5' in the cmd
	if (/^( ip ospf message-digest-key \d+ md5) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# sort route-maps
	if (/^route-map (\S+)/) {
	    my($key) = $1;
	    my($routemap) = $_;
	    while (<INPUT>) {
		tr/\015//d;
		last if (/^$prompt/ || ! /^(route-map |[ !])/);
		if (/^route-map (\S+)/) {
		    ProcessHistory("ROUTEMAP","keysort","$key","$routemap");
		    $key = $1;
		    $routemap = $_;
		} else  {
		    $routemap .= $_;
		}
	    }
	    ProcessHistory("ROUTEMAP","keysort","$key","$routemap");
	}
	# filter out any RCS/CVS tags to avoid confusing local CVS storage
	s/\$(Revision|Id):/ $1:/;
	# order access-lists
	/^access-list\s+(\d\d?)\s+(\S+)\s+(\S+)/ &&
	    ProcessHistory("ACL $1 $2","$aclsort","$3","$_") && next;
	# order extended access-lists
	/^access-list\s+(\d\d\d)\s+(\S+)\s+ip\s+host\s+(\S+)/ &&
	    ProcessHistory("EACL $1 $2","$aclsort","$3","$_") && next;
	/^access-list\s+(\d\d\d)\s+(\S+)\s+ip\s+(\d\S+)/ &&
	    ProcessHistory("EACL $1 $2","$aclsort","$3","$_") && next;
	/^access-list\s+(\d\d\d)\s+(\S+)\s+ip\s+any/ &&
	    ProcessHistory("EACL $1 $2","$aclsort","0.0.0.0","$_") && next;
	# order arp lists
	/^arp\s+(\d+\.\d+\.\d+\.\d+)\s+/ &&
	    ProcessHistory("ARP","$aclsort","$1","$_") && next;
	/^ip prefix-list\s+(\S+)\s+seq\s+(\d+)\s+(permit|deny)\s+(\d\S+)(\/.*)$/ &&
	    ProcessHistory("PACL $1 $3","$aclsort","$4","ip prefix-list $1 $3 $4$5\n")
	    && next;
	# order logging statements
	/^logging (\d+\.\d+\.\d+\.\d+)/ &&
	    ProcessHistory("LOGGING","ipsort","$1","$_") && next;
	# order/prune snmp-server host statements
	# we only prune lines of the form
	# snmp-server host a.b.c.d <community>
	if (/^snmp-server host (\d+\.\d+\.\d+\.\d+) /) {
	    if ($filter_commstr) {
		my($ip) = $1;
		my($line) = "snmp-server host $ip";
		my(@tokens) = split(' ', $');
		my($token);
		while ($token = shift(@tokens)) {
		    if ($token eq 'version') {
			$line .= " " . join(' ', ($token, shift(@tokens)));
		    } elsif ($token =~ /^(informs?|traps?|(no)?auth)$/) {
			$line .= " " . $token;
		    } else {
			$line = "!$line " . join(' ', ("<removed>", join(' ',@tokens)));
			last;
		    }
		}
		ProcessHistory("SNMPSERVERHOST","ipsort","$ip","$line\n");
	    } else {
		ProcessHistory("SNMPSERVERHOST","ipsort","$1","$_");
	    }
	    next;
	}
	if (/^(snmp-server community) (\S+)/) {
	    if ($filter_commstr) {
		ProcessHistory("SNMPSERVERCOMM","keysort","$_","!$1 <removed>$'") && next;
	    } else {
		ProcessHistory("SNMPSERVERCOMM","keysort","$_","$_") && next;
	    }
	}
	# order/prune tacacs/radius server statements
	if (/^(tacacs-server|radius-server) key / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 key <removed>\n"); next;
	}
	# order clns host statements
	/^clns host \S+ (\S+)/ &&
	    ProcessHistory("CLNS","keysort","$1","$_") && next;
	# delete ntp auth password - this md5 is a reversable too
	if (/^(ntp authentication-key \d+ md5) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# order ntp peers/servers
	if (/^ntp (server|peer) (\d+)\.(\d+)\.(\d+)\.(\d+)/) {
	    $sortkey = sprintf("$1 %03d%03d%03d%03d",$2,$3,$4,$5);
	    ProcessHistory("NTP","keysort",$sortkey,"$_");
	    next;
	}
	# order ip host line statements
	/^ip host line(\d+)/ &&
	    ProcessHistory("IPHOST","numsort","$1","$_") && next;
	# order atm map-list statements
	/^\s+ip\s+(\d+\.\d+\.\d+\.\d+)\s+atm-vc/ &&
	    ProcessHistory("ATM map-list","ipsort","$1","$_") && next;

	# catch anything that wasnt matched above.
	ProcessHistory("","","","$_");
	# end of config.  the ": " game is for the PIX
	if (/^end *$/) {
	    $found_end = 1;
	    return(0);
	}
    }
    return(0);
}

# dummy function
sub DoNothing {print STDOUT;}

# Main
@commandtable = (
	{'show version'			=> 'ShowVersion'},
	{'show bootvar'			=> 'ShowBoot'},
	{'dir flash:'			=> 'DirSlotN'},
	{'dir slot0:'			=> 'DirSlotN'},
	{'show chassis'			=> 'ShowChassis'},
	{'show system'			=> 'ShowChassis'},
	{'show inventory'		=> 'ShowInventory'},
	{'show vlan'			=> 'ShowVLAN'},
	{'show running'			=> 'WriteTerm'}
);
# Use an array to preserve the order of the commands and a hash for mapping
# commands to the subroutine and track commands that have been completed.
@commands = map(keys(%$_), @commandtable);
%commands = map(%$_, @commandtable);

$cisco_cmds=join(";",@commands);
$cmds_regexp = join("|", map quotemeta($_), @commands);

if (length($host) == 0) {
    if ($file) {
	print(STDERR "Too few arguments: file name required\n");
	exit(1);
    } else {
	print(STDERR "Too few arguments: host name required\n");
	exit(1);
    }
}
open(OUTPUT,">$host.new") || die "Can't open $host.new for writing: $!\n";
select(OUTPUT);
# make OUTPUT unbuffered if debugging
if ($debug) { $| = 1; }

if ($file) {
    print STDERR "opening file $host\n" if ($debug);
    print STDOUT "opening file $host\n" if ($log);
    open(INPUT,"<$host") || die "open failed for $host: $!\n";
} else {
    print STDERR "executing clogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($debug);
    print STDOUT "executing clogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($log);
    if (defined($ENV{NOPIPE}) && $ENV{NOPIPE} =~ /^YES/i) {
	system "clogin -t $timeo -c \"$cisco_cmds\" $host </dev/null > $host.raw 2>&1" || die "clogin failed for $host: $!\n";
	open(INPUT, "< $host.raw") || die "clogin failed for $host: $!\n";
    } else {
	open(INPUT,"clogin -t $timeo -c \"$cisco_cmds\" $host </dev/null |") || die "clogin failed for $host: $!\n";
    }
}

# determine ACL sorting mode
if ($ENV{"ACLSORT"} =~ /no/i) {
    $aclsort = "";
}
# determine community string filtering mode
if (defined($ENV{"NOCOMMSTR"}) &&
    ($ENV{"NOCOMMSTR"} =~ /yes/i || $ENV{"NOCOMMSTR"} =~ /^$/)) {
    $filter_commstr = 1;
} else {
    $filter_commstr = 0;
}
# determine password filtering mode
if ($ENV{"FILTER_PWDS"} =~ /no/i) {
    $filter_pwds = 0;
} elsif ($ENV{"FILTER_PWDS"} =~ /all/i) {
    $filter_pwds = 2;
} else {
    $filter_pwds = 1;
}

ProcessHistory("","","","!RANCID-CONTENT-TYPE: force10\n!\n");
ProcessHistory("COMMENTS","keysort","B0","!\n");
ProcessHistory("COMMENTS","keysort","F0","!\n");
ProcessHistory("COMMENTS","keysort","G0","!\n");
TOP: while(<INPUT>) {
    tr/\015//d;
    if (/\#\s?exit$/) {
	$clean_run=1;
	last;
    }
    if (/^Error:/) {
	print STDOUT ("$host clogin error: $_");
	print STDERR ("$host clogin error: $_") if ($debug);
	$clean_run=0;
	last;
    }
    while (/#\s*($cmds_regexp)\s*$/) {
	$cmd = $1;
	if (!defined($prompt)) {
	    $prompt = ($_ =~ /^([^#]+#)/)[0];
	    $prompt =~ s/([][}{)(\\])/\\$1/g;
	    print STDERR ("PROMPT MATCH: $prompt\n") if ($debug);
	}
	print STDERR ("HIT COMMAND:$_") if ($debug);
	if (! defined($commands{$cmd})) {
	    print STDERR "$host: found unexpected command - \"$cmd\"\n";
	    $clean_run = 0;
	    last TOP;
	}
	$rval = &{$commands{$cmd}};
	delete($commands{$cmd});
	if ($rval == -1) {
	    $clean_run = 0;
	    last TOP;
	}
    }
}
print STDOUT "Done $logincmd: $_\n" if ($log);
# Flush History
ProcessHistory("","","","");
# Cleanup
close(INPUT);
close(OUTPUT);

if (defined($ENV{NOPIPE}) && $ENV{NOPIPE} =~ /^YES/i) {
    unlink("$host.raw") if (! $debug);
}

# check for completeness
if (scalar(%commands) || !$clean_run || !$found_end) {
    if (scalar(%commands)) {
	printf(STDOUT "$host: missed cmd(s): %s\n", join(',', keys(%commands)));
	printf(STDERR "$host: missed cmd(s): %s\n", join(',', keys(%commands))) if ($debug);
    }
    if (!$clean_run || !$found_end) {
	print STDOUT "$host: End of run not found\n";
	print STDERR "$host: End of run not found\n" if ($debug);
	system("/usr/bin/tail -1 $host.new");
    }
    unlink "$host.new" if (! $debug);
}