package iosxr;
##
## $Id: iosxr.pm.in 3841 2018-07-18 16:22:59Z heas $
##
## rancid 3.8
## Copyright (c) 1997-2018 by Henry Kilmer and John Heasley
## All rights reserved.
##
## This code is derived from software contributed to and maintained 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. Neither the name of RANCID nor the names of its
##    contributors may be used to endorse or promote products derived from
##    this software without specific prior written permission.
##
## THIS SOFTWARE IS PROVIDED BY Henry Kilmer, John Heasley 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.
##
## It is the request of the authors, but not a condition of license, that
## parties packaging or redistributing RANCID NOT distribute altered versions
## of the etc/rancid.types.base file nor alter how this file is processed nor
## when in relation to etc/rancid.types.conf.  The goal of this is to help
## suppress our support costs.  If it becomes a problem, this could become a
## condition of license.
# 
#  The expect login scripts were based on Erik Sherk's gwtn, by permission.
# 
#  The original looking glass software was written by Ed Kern, provided by
#  permission and modified beyond recognition.
#
#  RANCID - Really Awesome New Cisco confIg Differ
#
#  iosxr.pm - Cisco IOS-XR rancid procedures

use 5.010;
use strict 'vars';
use warnings;
no warnings 'uninitialized';
require(Exporter);
our @ISA = qw(Exporter);

use rancid 3.8;

our $proc;
our $found_env;
our $found_diag;
our $found_version;
our $config_register;			# configuration register value

our $type;				# device model, from ShowVersion

our $C0;				# output formatting control
our $E0;
our $H0;
our $I0;

@ISA = qw(Exporter rancid main);
#XXX @Exporter::EXPORT = qw($VERSION @commandtable %commands @commands);

# load-time initialization
sub import {
    0;
}

# post-open(collection file) initialization
sub init {
    $proc = "";
    $found_env = 0;
    $found_diag = 0;
    $found_version = 0;
    $config_register = undef;		# configuration register value

    # XXX $type = undef;		# device model, from ShowVersion

    $C0 = 0;				# output formatting control
    $E0 = 0;
    $H0 = 0;
    $I0 = 0;

    # add content lines and separators
    ProcessHistory("","","","!RANCID-CONTENT-TYPE: $devtype\n!\n");
    ProcessHistory("COMMENTS","keysort","B0","!\n");
    ProcessHistory("COMMENTS","keysort","D0","!\n");
    ProcessHistory("COMMENTS","keysort","F0","!\n");
    ProcessHistory("COMMENTS","keysort","G0","!\n");

    0;
}

# main loop of input of device output
sub inloop {
    my($INPUT, $OUTPUT) = @_;
    my($cmd, $rval);

TOP: while(<$INPUT>) {
	tr/\015//d;
CMD:	if (/[>#]\s?exit$/) {
	    $clean_run = 1;
	    last;
	}
	if (/^Error:/) {
	    print STDOUT ("$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";
		$clean_run = 0;
		last TOP;
	    }
	    if (! defined(&{$commands{$cmd}})) {
		printf(STDERR "$host: undefined function - \"%s\"\n",
		       $commands{$cmd});
		$clean_run = 0;
		last TOP;
	    }
	    $rval = &{$commands{$cmd}}($INPUT, $OUTPUT, $cmd);
	    delete($commands{$cmd});
	    if ($rval == -1) {
		$clean_run = 0;
		last TOP;
	    }
	    if (defined($prompt)) {
		if (/$prompt/) {
		    goto CMD;
		}
	    }
	}
    }
}

# This routine parses "admin show version"
sub ShowVersion {
    my($INPUT, $OUTPUT, $cmd) = @_;
    my($slave, $slaveslot);
    print STDERR "    In ShowVersion: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	if (/^$prompt/) { $found_version = 1; last};
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(0) if ($found_version);		# Only do this routine once
	return(-1) if (/command authorization failed/i);

	if (/^Slave in slot (\d+) is running/) {
	    $slave = " Slave:";
	    $slaveslot = ", slot $1";
	    next;
	}
	/^(Cisco )?IOS .* Software,? \(([A-Za-z0-9_-]*)\), .*Version\s+(.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","F1",
		"!Image:$slave Software: $2, $3\n") && next;
	/^([A-Za-z-0-9_]*) Synced to mainline version: (.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","F2",
		"!Image:$slave $1 Synced to mainline version: $2\n") && next;
	/^Compiled (.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","F3",
		"!Image:$slave Compiled: $1\n") && next;
	/^ROM: (IOS \S+ )?(System )?Bootstrap.*(Version.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","G1",
		"!ROM Bootstrap: $3\n") && next;
	/^Serial Number:\s+(.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","C1", "!$_") && next;

	/^Activation Key:\s+(.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","C2", "!$_") && next;
	/^ROM: \d+ Bootstrap .*(Version.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","G2",
		"!ROM Image: Bootstrap $1\n!\n") && next;
	/^ROM: .*(Version.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","G3","!ROM Image: $1\n") && next;
	/^BOOTFLASH: .*(Version.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","G4","!BOOTFLASH: $1\n") && next;
	/^BOOTLDR: .*(Version.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","G4","!BOOTLDR: $1\n") && next;
	/^System image file is "([^\"]*)", booted via (\S*)/ &&
# removed the booted source due to
# CSCdk28131: cycling info in 'sh ver'
#	ProcessHistory("COMMENTS","keysort","F4","!Image: booted via $2, $1\n") &&
	    ProcessHistory("COMMENTS","keysort","F4","!Image: booted $1\n") &&
	    next;
	/^System image file is "([^\"]*)"$/ &&
	    ProcessHistory("COMMENTS","keysort","F5","!Image: $1\n") && next;
	if (/(\S+(?:\sseries)?)\s+(?:\(([^)]+)\)\s+processor|\(revision[^)]+\)).*\s+with (\S+k) bytes/i) {
	    $proc = $1;
	    my($cpu) = $2;
	    my($mem) = $3;
	    my($device) = "router";

	    # the next line ought to be the more specific cpu info, grab it.
	    # yet, some boards/IOS vers have a processor ID line between these
	    # two.  grrr.  make sure we dont grab the "software" junk that
	    # follows these lines by looking for "CPU at " or the 2600s
	    # "processor: " unique string.  there are undoubtedly many other
	    # incantations.  for a slave, we dont get this info, its just a
	    # blank line.
	    $_ = <$INPUT>;
	    if (/processor board id/i) {
		my($sn);

		if (/processor board id (\S+)/i) {
		    $sn = $1;
		    $sn =~ s/,$//;
		    ProcessHistory("COMMENTS","keysort","D9",
				   "!Processor ID: $sn\n");
		}
		$_ = <$INPUT>;
	    }
	    $_ = "" if (! /(cpu at |processor: |$cpu processor,)/i);
	    tr/\015//d;
	    s/implementation/impl/i;
	    if ($_ !~ /^\s*$/) {
		chomp;
		s/^/, /;
	    }

	    if ($proc =~ /1200[48]\/(GRP|PRP)/ || $proc =~ /1201[26]\/(GRP|PRP)/) {
		$type = "12000";
	    } elsif ($proc =~ /1201[26]-8R\/(GRP|PRP)/) {
		$type = "12000";
	    } elsif ($proc =~ /1240[48]\/(GRP|PRP)/ || $proc =~ /1241[06]\/(GRP|PRP)/) {
		$type = "12400";
            } elsif ($proc =~ /ASR9K/) {
                $_ = <$INPUT>;
                $type = $proc;
                if (/(ASR\S+)\s+(\SC)\s+Chassis/) {
                    $proc = $1;
                } elsif (/(ASR\S+)\s+Chassis/) {
                    $proc = $1;
                } elsif (/(ASR)\s+(9\d+)\s+.*\s+Chassis with/) {
		    tr/\015//d;
                    chomp;
                    $proc = $_;
                } elsif (/(ASR)\s+(9\S+)\s+(\SC)\s+Chassis/) {
                    $proc = "ASR-". $2;
                } elsif (/(ASR)\s+(9\S+)\s+Chassis/) {
                    $proc = "ASR-". $2;
                } elsif (/(ASR\s+9922)/) {
                    $proc = "ASR-9922";
                }
                $_ = "";
	    } else {
		$type = $proc;
	    }

	    print STDERR "TYPE = $type\n" if ($debug);
	    ProcessHistory("COMMENTS","keysort","A1",
		"!Chassis type:$slave $proc - a $type $device\n");
	    ProcessHistory("COMMENTS","keysort","B1",
		"!Memory:$slave main $mem\n");
	    if (defined($cpu)) {
		ProcessHistory("COMMENTS","keysort","A3",
			       "!CPU:$slave $cpu$_$slaveslot\n");
	    }
	    next;
	}
	/^(\d+[kK]) bytes of multibus/ &&
	    ProcessHistory("COMMENTS","keysort","B2",
		"!Memory: multibus $1\n") && next;
	/^(\d+[kK]) bytes of (non-volatile|NVRAM)/ &&
	    ProcessHistory("COMMENTS","keysort","B3",
		"!Memory: nvram $1\n") && next;
	/^(\d+[kK]) bytes of flash memory/ &&
	    ProcessHistory("COMMENTS","keysort","B5","!Memory: flash $1\n") &&
	    next;
	/^(\d+[kK]) bytes of .*flash partition/ &&
	    ProcessHistory("COMMENTS","keysort","B6",
		"!Memory: flash partition $1\n") && next;
	/^(\d+[kK]) bytes of Flash internal/ &&
	    ProcessHistory("COMMENTS","keysort","B4",
		"!Memory: bootflash $1\n") && next;
	if (/^(\d+[kK]) bytes of (Flash|ATA)?.*PCMCIA .*(slot|disk) ?(\d)/i) {
	    ProcessHistory("COMMENTS","keysort","B7",
		"!Memory: pcmcia $2 $3$4 $1\n");
	    next;
	}
	if (/^(\d+[kK]) bytes of (slot|disk)(\d)/i) {
	    ProcessHistory("COMMENTS","keysort","B7",
		"!Memory: pcmcia $2$3 $1\n");
	    next;
	}
	if (/^WARNING/) {
	    if (!defined($I0)) {
		$I0 = 1;
		ProcessHistory("COMMENTS","keysort","I0","!\n");
	    }
	    ProcessHistory("COMMENTS","keysort","I1","! $_");
	}
	if (/^Configuration register is (.*)$/) {
	    $config_register = $1;
	    next;
	}
	if (/^Configuration register on node \S+ is (.*)$/) {
	    $config_register = $1 if (length($config_register) < 1);
	    next;
	}
    }
    return(0);
}

# This routine parses "admin show diag".
# This will create arrays for hw info.
sub AdminShowDiag {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowDiag: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);

	# skip blank lines
	/^$/ && next;
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	s/^NODE //;
	# wtf are these?
	next if (/(New Deviation|UDI_VID|Board State)/);
	# skip insertion time
	next if (/insertion time/i);
	# skip board h/w revision junk
	next if (/^(\s{2}board |\s{3,})/i);

	ProcessHistory("SLOT","","","!$_");
    }
    ProcessHistory("SLOT","","","!\n");
    return(0);
}

# This routine parses "admin show running".
sub AdminShowRunning {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowRunning: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);

	# skip blank lines
	/^$/ && next;
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	/^building configuration/i && next;
	if (/^(\s*secret) / && $filter_pwds >= 2) {
	    ProcessHistory("ASR","","","!$1 <removed>\n");
	    next;
	}

	ProcessHistory("ASR","","","!$_");

	/^end$/ && last;
    }
    ProcessHistory("ASR","","","!\n");
    return(0);
}

# This routine parses "admin show hw-module fpd location all".
sub ShowHWfpd {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowRunning: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);

	# skip blank lines
	/^$/ && next;
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	/^notes:/i && last;

	ProcessHistory("FPD","","","!$_");
    }
    ProcessHistory("FPD","","","!\n");
    return(0);
}

# This routine parses "admin show redundancy"
sub ShowRedundancy {
    my($INPUT, $OUTPUT, $cmd) = @_;
    my($slave, $slaveslot);
    print STDERR "    In ShowRedundancy: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS

	if (/^Version information for secondary in slot (\d+):/) {
	    $slave = " Slave:";
	    $slaveslot = ", slot $1";
	    next;
	}

	/^IOS .* Software \(([A-Za-z0-9_-]*)\), .*Version\s+(.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","F1",
		"!Image:$slave Software: $1, $2\n") && next;
	/^Compiled (.*)$/ &&
	    ProcessHistory("COMMENTS","keysort","F3",
		"!Image:$slave Compiled: $1\n") && next;
    }
    return(0);
}

# This routine parses "show install active"
sub ShowInstallActive {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowInstallActive: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/^\s*\^\s*$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);
	return(-1) if (/install director is not up or ready/i);# temp error
	return(-1) if (/failed to output install information /i);# temp error

	# FPD upgrade in progress on some hardware, reload/configuration change
	# on those is not recommended as it might cause HW programming failure
	# and result in RMA of the hardware.
	# FPD upgrade has ended.
	next if (/fpd upgrade has ended/i ||
		 /fpd upgrade in progress /i ||
		 /might cause hw programming failure/i ||
		 /result in rma of the hardware/i);	# useless FPD messages

	ProcessHistory("COMMENTS","keysort","F5","!Image: $_") && next;
    }
    return(0);
}

# This routine parses "admin show env all"
sub ShowEnv {
    my($INPUT, $OUTPUT, $cmd) = @_;
    # Skip if this is not a 7500, 7200, or 7000.
    print STDERR "    In ShowEnv: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	if (/^$prompt/) { $found_env = 1; last};
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(0) if ($found_env);		# Only do this routine once
	return(-1) if (/command authorization failed/i);

	if (!defined($E0)) {
	    $E0 = 1;
	    ProcessHistory("COMMENTS","keysort","E0","!\n");
	}

	if (/power budget summary for rack/i) {
	    ProcessHistory("COMMENTS","keysort","E1","!Power: $_");
	    while (<$INPUT>) {
		tr/\015//d;
		goto OUT if (/^$prompt/);
		last if (/^altitude information/i);
		ProcessHistory("COMMENTS","keysort","E1","!Power: $_");
	    }
	    next;
	}
	/^Power Supply Information$/ && next;
	/^\s*Power Module\s+Voltage\s+Current$/ && next;
	/^\s*(Power [^:\n]+)$/ &&
	    ProcessHistory("COMMENTS","keysort","E1","!Power: $1\n") && next;
	/^\s*(Lower Power .*)/i &&
	    ProcessHistory("COMMENTS","keysort","E2","!Power: $1\n") && next;
	/^\s*(redundant .*)/i &&
	    ProcessHistory("COMMENTS","keysort","E2","!Power: $1\n") && next;
	/^\s*(RPS is .*)/i &&
	    ProcessHistory("COMMENTS","keysort","E2","!Power: $1\n") && next;
    }
OUT:
    ProcessHistory("COMMENTS","","","!\n");
    return(0);
}

# This routine parses "dir /all ((disk|slot)N|bootflash|nvram):"
sub DirSlotN {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In DirSlotN: $_" if ($debug);

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

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if /^\s*\^\s*$/;
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/(No such device|Error Sending Request)/i);
	return(1) if (/: path doesnot exists/i);	# NCS
	return(1) if (/: Path does not exist/i);	# NCS
	return(1) if (/\%Error: No such file or directory/);
	return(1) if (/\%Error: No route to host/);
	return(1) if (/No space information available/);
	# Corrupt flash
	/\%Error calling getdents / &&
	    ProcessHistory("FLASH","","","!Flash: $dev: $_") && next;
	return(-1) if (/\%Error calling/);
	return(-1) if (/(: device being squeezed|ATA_Status time out)/i); # busy
	return(-1) if (/\%Error opening \S+:\S+ \(Device or resource busy\)/i);
	return(-1) if (/command authorization failed/i);
	return(1) if (/(Open device \S+ failed|Error opening \S+:)/);

	# Filter dhcp database
	if (/dhcp_[^. ]*\.txt/) {
	    next;
	}
	# Filter debugging file dlbg.txt & dlbg.txt-1 only on ASR9k w/ XR
	if ($proc =~ /ASR9K/ && /dlbg\.txt/) {
	    next;
	}
	# filter frequently changing files from IOX bootflash, hardiska,
	# and nvram
	if ($dev =~ /(bootflash|disk0|harddisk|nvram)/) {
	    if (/\s(\.python-history|aaa|\.bash_history|ce_switch.log)\s*$/ ||
	        /\s(cisco_support|errmsg_cont|genstr_cont|temp_cont)\s*$/ ||
	        /\s(temp_cont|temp_static_data|uptime_cont|volt_cont)\s*$/) {
		# change
		# 57          -rw-  23100       <no date>              volt_cont
		# 614788      drwx  4096        Fri Aug 20 12:06:25 2010  temp_cont
		# to
		# 57          -rw-              <no date>              volt_cont
		# 614788      drwx                                        temp_cont
		if (/(\s*\d+\s+\S+\s+)(\d+)(\s+)(<no date> )/) {
		    my($a, $sz, $c, $dt, $rem) = ($1, $2, $3, $4, $');
		    my($szl) = length($sz);
		    my($fmt) = "%s%-". $szl ."s%s%s%s";
		    $_ = sprintf($fmt, $a, "", $c, $dt, $rem);
		} elsif (/(\s*\d+)(\s+\S+\s+\d+\s+)(\d+\s+\w+\s+\d+\s+\d+:\d+)/) {
		    # XR >= 6.3; dir disk0:, but harddisk: is diff format.  wtf
		    # drop fileno size, & date.
		    # " 8002 drwxr-xr-x 2 4096 Jan 17 15:27 np"
		    my($fn, $perm, $dt, $rem) = ($1, $2, $3, $');
		    my($fnl, $dtl) = (length($fn), length($dt));
		    my($fmt) = "%-". $fnl ."s%s%-". $dtl ."s%s";
		    $_ = sprintf($fmt, "", $perm, "", $rem);
		} elsif (/(\s*\d+\s+\S+\s+)(\d+)(\s+)(\w+ \w+\s+\d+ \d+:\d+:\d+ \d+)/) {
		    my($a, $sz, $c, $dt, $rem) = ($1, $2, $3, $4, $');
		    my($szl, $dtl) = (length($sz), length($dt));
		    my($fmt) = "%s%-". $szl ."s%s%-". $dtl ."s%s";
		    $_ = sprintf($fmt, $a, "", $c, "", $rem);
		}
	    }
	}

	# XR: 822083584 bytes total (821081600 bytes free)
	# eXR: 990484 kbytes total (813208 kbytes free)
	if (/^\s*(\d+ k?bytes) total\s+\((\d+ k?bytes) free\)/i) {
	    ProcessHistory("FLASH","","","!Flash: $dev: " .
			   diskszsummary($1, $2) . "\n");
	    next;
	}

	ProcessHistory("FLASH","","","!Flash: $dev: $_");
    }
    ProcessHistory("","","","!\n");
    return(0);
}

# This routine parses "admin show variables boot"
sub ShowBootVar {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowBootVar: $_" if ($debug);

    while (<$INPUT>) {
	# delete non-ascii chars, except new line
	tr/ -~\n//cd;
	last if (/^$prompt/);
	next if (/\s*$cmd\s*$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/^\s*\^\s*$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/Ambiguous command/i);
	return(1) if (/(Open device \S+ failed|Error opening \S+:)/);
	return(-1) if (/command authorization failed/i);

	# skip blank lines
	next if (/^\s*$/);
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	ProcessHistory("COMMENTS", "keysort", "C30", "! $_");
    }
    ProcessHistory("COMMENTS", "keysort", "C39", "!\n");

    return(0);
}

# This routine parses "show controllers"
sub ShowContAll {
    my($INPUT, $OUTPUT, $cmd) = @_;
    my($INT);
    print STDERR "    In ShowContAll: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	# return(1) if ($type =~ /^(12[40]|7[05])/);
	return(-1) if (/command authorization failed/i);

	if (/^Interface ([^ \n(]*)/) { $INT = "$1, "; next; }
	/^(BRI unit \d)/ &&
	    ProcessHistory("INT","","","!Interface: $1\n") && next;
	/^LANCE unit \d, NIM/ &&
	    ProcessHistory("INT","","","!Interface: $_") && next;
	/^(LANCE unit \d)/ &&
	    ProcessHistory("INT","","","!Interface: $1\n") && next;
	/(Media Type is \S+),/ &&
	    ProcessHistory("INT","","","!\t$1\n");
	    if (/(M\dT[^ :]*:) show controller:$/) {
		my($ctlr) = $1;
		$_ = <$INPUT>; tr/\015//d; s/ subunit \d,//;
		ProcessHistory("INT","","","!Interface: $ctlr $_");
	    }
	if (/^(\S+) : show controller:$/) {
	    my($ctlr) = $1;
	    $_ = <$INPUT>; tr/\015//d; s/ subunit \d,//;
	    ProcessHistory("INT","","","!Interface: $ctlr: $_");
	}
	/^(HD unit \d), idb/ &&
	    ProcessHistory("INT","","","!Interface: $1\n") && next;
	/^HD unit \d, NIM/ &&
	    ProcessHistory("INT","","","!Interface: $_") && next;
	/^buffer size \d+  HD unit \d, (.*)/ &&
	    ProcessHistory("INT","","","!\t$1\n") && next;
	/^AM79970 / && ProcessHistory("INT","","","!Interface: $_") && next;
	/^buffer size \d+  (Universal Serial: .*)/ &&
	    ProcessHistory("INT","","","!\t$1\n") && next;
	/^Hardware is (.*)/ &&
	    ProcessHistory("INT","","","!Interface: $INT$1\n") && next;
	/^(QUICC Serial unit \d),/ &&
	    ProcessHistory("INT","","","!$1\n") && next;
	/^QUICC Ethernet .*/ &&
	    ProcessHistory("INT","","","!$_") && next;
	/^DTE .*\.$/ &&
	    ProcessHistory("INT","","","!\t$_") && next;
	/^(cable type :.*),/ &&
	    ProcessHistory("INT","","","!\t$1\n") && next;
	/^(.* cable.*), received clockrate \d+$/ &&
	    ProcessHistory("INT","","","!\t$1\n") && next;
	/^.* cable.*$/ &&
	    ProcessHistory("INT","","","!\t$_") && next;
    }
    return(0);
}

# This routine parses "show debug"
sub ShowDebug {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowDebug: $_" if ($debug);
    my($lines) = 0;

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);

	/^No matching debug flags set$/ && next;
	/^No debug flags set$/ && next;
	ProcessHistory("COMMENTS","keysort","J1","!DEBUG: $_");
	$lines++;
    }
    if ($lines) {
	ProcessHistory("COMMENTS","keysort","J0","!\n");
    }
    return(0);
}

# This routine parses "admin show install summary"
sub ShowInstallSummary {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowInstallSummary: $_" if ($debug);

    while (<$INPUT>) {
	# delete non-ascii chars, except new line
	tr/ -~\n//cd;
	last if (/^$prompt/);
	next if (/\s*$cmd\s*$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/^\s*\^\s*$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/Ambiguous command/i);
	return(1) if (/(Open device \S+ failed|Error opening \S+:)/);
	return(-1) if (/command authorization failed/i);
	return(-1) if (/inventory summary cannot be output/i);	# temp error
	return(-1) if (/currently affected by install operation/i);# temp error
	return(-1) if (/install director is not up or ready/i);# temp error

	# skip blank lines
	next if (/^\s*$/);
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	ProcessHistory("COMMENTS", "keysort", "C15", "! $_");
    }
    ProcessHistory("COMMENTS", "keysort", "C10", "!\n");
    ProcessHistory("COMMENTS", "keysort", "C19", "!\n");

    return(0);
}

# This routine parses "show inventory".
sub ShowInventory {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowInventory: $_" if ($debug);

    while (<$INPUT>) {
	# delete non-ascii chars, except new line
	tr/ -~\n//cd;
	return if (/^\s*\^$/);
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(-1) if (/command authorization failed/i);

	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	# remove spaces after quotes
	s/\"\s+/\"/g;
	if (/^(name: "[^"]*",) (descr: "[^"]+")/i) {
	    ProcessHistory("INVENTORY","","", sprintf("!%-30s %s\n", $1, $2));
	    next;
	}
	# split PID/VID/SN line
	if (/^PID: (\S*)\s*, VID: (\S*)\s*, SN: (\S*)\s*$/) {
	    my($pid,$vid,$sn) = ($1, $2, $3);
	    my($entries) = "";
	    # filter <empty>, "0x" and "N/A" lines
	    if ($pid !~ /^(|0x|N\/A)$/) {
		$entries .= "!PID: $pid\n";
	    }
	    if ($vid !~ /^(|0x|N\/A)$/) {
		$entries .= "!VID: $vid\n";
	    }
	    if ($sn !~ /^(|0x|N\/A)$/) {
		$entries .= "!SN: $sn\n";
	    }
	    ProcessHistory("INVENTORY","","", "$entries");
	    next;
	}
	ProcessHistory("INVENTORY","","","!$_");
    }
    ProcessHistory("INVENTORY","","","!\n");

    return(0);
}

# This routine parses "admin show license" & "admin show license udi"
sub ShowLicense {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowLicense: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	# delete non-ascii chars, except new line
	last if (/^$prompt/);
	next if (/\s*$cmd\s*$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (/^\s*\^\s*$/);
	next if (/^-+\^$/i);	# NCS cmd-line error pointer
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	next if (/^(\e\[.\d+h)?sysadmin-vm:[^#]+# /i);			# NCS
	return(1) if (/^syntax error: element does not exist$/i);	# NCS
	return(1) if (/^syntax error: unknown argument$/i);		# NCS
	return(1) if (/Ambiguous command/i);
	return(1) if (/(Open device \S+ failed|Error opening \S+:)/);
	return(-1) if (/command authorization failed/i);

	# show lic on o/s w/o licenses
	s/info\s*: //;

	# file feature status line (ASR9k, others?)
	next if (/\s*status: /i);

	# skip blank lines
	next if (/^\s*$/);
	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	ProcessHistory("COMMENTS", "keysort", "C20", "! $_");
    }
    ProcessHistory("COMMENTS", "keysort", "C20", "!\n");

    return(0);
}

# This routine parses "show rpl maximum"
sub ShowRPL {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowRPL: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if /^\s*\^\s*$/;
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/Ambiguous command/i);
	return(-1) if (/command authorization failed/i);

	ProcessHistory("COMMENTS","keysort","RPLMAX","! $_");
    }
    ProcessHistory("COMMENTS","keysort","RPLMAX","!\n");
    return(0);
}

# This routine parses "show vlan"
sub ShowVLAN {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In ShowVLAN: $_" if ($debug);

    while (<$INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if /^\s*\^\s*$/;
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/Ambiguous command/i);
	return(-1) if (/command authorization failed/i);

	ProcessHistory("COMMENTS","keysort","IO","!VLAN: $_");
    }
    ProcessHistory("COMMENTS","keysort","IO","!\n");
    return(0);
}

# This routine processes a "write term"
sub WriteTerm {
    my($INPUT, $OUTPUT, $cmd) = @_;
    print STDERR "    In WriteTerm: $_" if ($debug);
    my($lineauto,$comment,$linecnt) = (0,0,0);

    while (<$INPUT>) {
REPEAT:	tr/\015//d;
	last if (/^$prompt/);
	# filter the bloody cmd-line timestamp
	next if (/^\w{3} \w{3,4} {1,3}\d{1,2} {1,2}\d{1,2}:\d+:\d+\.\d+ \S+$/);
	return(1) if (!$linecnt && /^\s+\^\s*$/);
	return(1) if (/Line has invalid autocommand /);
	return(1) if (/(Invalid (input|command) detected|Type help or )/i);
	return(1) if (/^(-+\^|syntax error: unknown argument)$/i);	# NCS
	return(1) if (/\%Error: No such file or directory/);
	return(0) if ($found_end);		# Only do this routine once
	return(-1) if (/command authorization failed/i);
	return(-1) if (/% ?configuration buffer full/i);
	/^! no configuration change since last restart/i && next;
	# skip emtpy lines at the beginning
	if (!$linecnt && /^\s*$/) {
	    next;
	}
	if (!$linecnt && defined($config_register)) {
	    ProcessHistory("","","", "!\nconfig-register $config_register\n");
	}

	# NCS junk
	next if (/^\S+ connected from 127.0.0.1 using console /);
	next if (/# terminal length 0$/);

	/Non-Volatile memory is in use/ && return(-1); # NvRAM is locked
	/% Configuration buffer full, / && return(-1); # buffer is in use
	$linecnt++;
	$lineauto = 0 if (/^[^ ]/);
	# skip the crap
	if (/^(##+|(building|current) configuration)/i) {
	    while (<$INPUT>) {
		next if (/^Current configuration\s*:/i);
		next if (/^:/);
		next if (/^([%!].*|\s*)$/);
		next if (/^ip add.*ipv4:/);	# band-aid for 3620 12.0S
		last;
	    }
	    tr/\015//d;
	}
	# some versions have other crap mixed in with the bits in the
	# block above
	/^! (Last configuration|NVRAM config last)/ && next;
	# and for the ASA
	/^: (Written by \S+ at|Saved)/ && next;

	# skip consecutive comment lines to avoid oscillating extra comment
	# line on some access servers.  grrr.
	if (/^!\s*$/) {
	    next if ($comment);
	    ProcessHistory("","","",$_);
	    $comment++;
	    next;
	}
	$comment = 0;

	# 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
	$lineauto = 1 if /^ modem auto/;
	/^ speed / && $lineauto	&& next; # kill speed on serial lines
	/^ clockrate /		&& next; # kill clockrate on serial interfaces
	if (/^(enable )?(password|passwd)( level \d+)? / && $filter_pwds >= 1) {
	    ProcessHistory("ENABLE","","","!$1$2$3 <removed>\n");
	    next;
	}
	if (/^(enable secret) / && $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 (/^( set session-key (in|out)bound ah \d+ )/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1<removed>\n");
	    next;
	}
	if (/^( set session-key (in|out)bound esp \d+ (authenticator|cypher) )/
	    && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1<removed>\n");
	    next;
	}
	if (/^(\s*)password / && $filter_pwds >= 1) {
	    ProcessHistory("LINE-PASS","","","!$1password <removed>\n");
	    next;
	}
	if (/^(\s*)secret / && $filter_pwds >= 2) {
	    ProcessHistory("LINE-PASS","","","!$1secret <removed>\n");
	    next;
	}
	if (/^\s*neighbor (\S*) password / && $filter_pwds >= 1) {
	    ProcessHistory("","","","! neighbor $1 password <removed>\n");
	    next;
	}
	if (/^(ppp .* password) 7 .*/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^(ip ftp password) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^( ip ospf authentication-key) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# isis passwords appear to be completely plain-text
	if (/^\s+isis password (\S+)( .*)?/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!isis password <removed>$2\n"); next;
	}
	if (/^\s+(domain-password|area-password) (\S+)( .*)?/
							&& $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>$3\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;
	}
	# this is also reversable, despite 'md5 encrypted' in the cmd
	if (/^(  message-digest-key \d+ md5 (7|encrypted)) /
	    && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^((crypto )?isakmp key) \S+ / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed> $'"); next;
	}
	# filter HSRP passwords
	if (/^(\s+standby \d+ authentication) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# this appears in "measurement/sla" images
	if (/^(\s+key-string \d?)/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	if (/^( l2tp tunnel \S+ password)/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# i am told these are plain-text on the PIX
	if (/^(vpdn username (\S+) password)/) {
	    if ($filter_pwds >= 1) {
		ProcessHistory("USER","keysort","$2","!$1 <removed>\n");
	    } else {
		ProcessHistory("USER","keysort","$2","$_");
	    }
	    next;
	}
	# ASA/PIX keys in more system:running-config
	if (/^( pre-shared-key | key |failover key ).*/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed> $'"); next;
	}
	if (/(\s+ldap-login-password )\S+(.*)/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed> $'"); next;
	}
	#
	if (/^( cable shared-secret )/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n");
	    next;
	}
	/fair-queue individual-limit/ && next;
	# sort ip explicit-paths.
	if (/^ip explicit-path name (\S+)/) {
	    my($key) = $1;
	    my($expath) = $_;
	    while (<$INPUT>) {
		tr/\015//d;
		last if (/^$prompt/);
		last if (! /^(ip explicit-path name |[ !])/);
		if (/^ip explicit-path name (\S+)/) {
		    ProcessHistory("EXPATH","keysort","$key","$expath");
		    $key = $1;
		    $expath = $_;
		} else {
		    $expath .= $_;
		}
	    }
	    ProcessHistory("EXPATH","keysort","$key","$expath");
	}
	# sort route-maps
	if (/^route-map (\S+)/) {
	    my($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","$_") && next;
	# sort ipv{4,6} access-lists
	if ($aclfilterseq && /^ipv(4|6) access-list (\S+)\s*$/) {
	    my($nlri, $key) = ($1, $2);
	    my($seq, $cmd);
	    ProcessHistory("ACL $nlri $key","","","$_");
	    while (<$INPUT>) {
		tr/\015//d;
		goto REPEAT if (/^$prompt/ || !/^(\s|\d|!)/);
		if (/^\s*!/) {
		    ProcessHistory("ACL $nlri $key !", "", "", "$_");
		    next;
		}
		# ipv4 access-list name
		#  remark NTP
   		#  deny ipv4 host 224.0.1.1 any
		#  deny ipv4 239.0.0.0 0.255.255.255 any
		#  permit udp any eq 123 any
		#  permit ipv4 nnn.nnn.nnn.nnn/nn any
		#  permit nnn.nnn.nnn.nnn/nn
		# ipv6 access-list name
		#  permit ipv6 host 2001:nnnn::nnnn any
		#  permit ipv6 2001:nnn::/nnn any
		#  permit 2001:nnnn::/64 any
		#  permit udp any eq 123 any
		my($seq, $cmd, $resid) = ($_ =~ /^\s*(\d+) (\w+) (.+)/);
		if ($cmd =~ /(permit|deny)/) {
		    my($ip);
		    my(@w) = ($resid =~ /(\S+) (\S+) (\S+\s)?(.+)/);
		    for (my($i) = 0; $i < $#w; $i++) {
			if ($w[$i] eq "any") {
			    if ($nlri eq "ipv4") {
				$ip = "255.255.255.255/32";
			    } else {
				$ip = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128";
			    }
			    last;
			} elsif ($w[$i] =~ /^[:0-9]/ ||
				 $2[$i] =~ /^[a-fA-F]{1,4}:/) {
			    $ip = $w[$i];
			    $ip =~ s/\s+$//;		# trim trailing WS
			    last;
			}
		    }
		    ProcessHistory("ACL $nlri $key $cmd", "$aclsort", "$ip",
				   " $cmd $resid\n");
		} else {
		    ProcessHistory("ACL $nlri $key $cmd", "", "",
				   " $cmd $resid\n");
		}
	    }
	}
	# order arp lists
	/^arp\s+(\d+\.\d+\.\d+\.\d+)\s+/ &&
	    ProcessHistory("ARP","$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$5\n")
	    && next;
	if ($aclfilterseq) {
	    /^ip(v4|v6) prefix-list\s+(\S+)\s+seq\s+(\d+)\s+(permit|deny)\s+(\S+)(.*)/ &&
		ProcessHistory("PACL $2 $4","$aclsort","$5","ip$1 prefix-list $2 $4 $5$6\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)));
			if ($token eq '3') {
			    $line .= " " . join(' ', ($token, shift(@tokens)));
			}
		    } elsif ($token eq 'vrf') {
			$line .= " " . join(' ', ($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;
	    }
	}
	# prune tacacs/radius server keys
	if (/^((tacacs|radius)-server\s(\w*[-\s(\s\S+])*\s?key) (\d )?\w+/
	    && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>$'"); next;
	}
	# order clns host statements
	/^clns host \S+ (\S+)/ &&
	    ProcessHistory("CLNS","keysort","$1","$_") && next;
	# order alias statements
	/^alias / && ProcessHistory("ALIAS","keysort","$_","$_") && next;
	# delete ntp auth password - this md5 is a reversable too
	if (/^(ntp authentication-key \d+ md5) / && $filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n"); next;
	}
	# order ntp peers/servers
	if (/^ntp (server|peer) (\d+)\.(\d+)\.(\d+)\.(\d+)/) {
	    my($sortkey) = sprintf("$1 %03d%03d%03d%03d",$2,$3,$4,$5);
	    ProcessHistory("NTP","keysort",$sortkey,"$_");
	    next;
	}
	# order ip host statements
	/^ip host (\S+) / &&
	    ProcessHistory("IPHOST","keysort","$1","$_") && next;
	# order ip nat source static statements
	/^ip nat (\S+) source static (\S+)/ &&
	    ProcessHistory("IP NAT $1","ipsort","$2","$_") && next;
	# order atm map-list statements
	/^\s+ip\s+(\d+\.\d+\.\d+\.\d+)\s+atm-vc/ &&
	    ProcessHistory("ATM map-list","ipsort","$1","$_") && next;
	# order ip rcmd lines
	/^ip rcmd/ && ProcessHistory("RCMD","keysort","$_","$_") && next;

	# system controller
	/^syscon address (\S*) (\S*)/ &&
	    ProcessHistory("","","","!syscon address $1 <removed>\n") &&
	    next;
	if (/^syscon password (\S*)/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","!syscon password <removed>\n");
	    next;
	}

	/^ *Cryptochecksum:/ && next;

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

    return(0);
}

1;
