#! @PERLV_PATH@
##
## $Id$
##
## @PACKAGE@ @VERSION@
## Copyright (c) 1997-2007 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.
# 
# Amazingly hacked version of Hank's rancid - this one tries to
# deal with foundrys and foundrys OEM'd by HP as Procurves.
#
#  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;				# flogin 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 $command))
	&& defined %history) {
	print eval "$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 {
    my($slot);

    print STDERR "    In ShowVersion: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	next if /^\s*$/;
	last if (/^$prompt/);

	next if (/^(The system |Crash time)/);
	next if (/^((Active|Standby) Management|LP Slot \d+) uptime is/);

	s/^\s*(HW|SW)/$1/;
	s/^\s*(Compiled on)/SW: $1/;
	s/^\s*(\(\d+ bytes\) from )/SW: $1/;

	#s/^(HW.*)/$1\n/;
	if (/^SL (\d+)/) {
	    $slot = "Slot $1";
	    s/^SL \d+/$slot/;
	}
	if (/MHz .* processor/) {
	    $slot = "MGMT";
	}
	s/^(\s*\d+ )/$slot:$1/;
	s/^===*//;

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

# This routine parses "show chassis"
sub ShowChassis {
    my($skip) = 0;

    print STDERR "    In ShowChassis: $_" if ($debug);

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	next if (/ from /);
	next if (/current temperature/i);

	if (/^---/ || /^$/) { # next section reached
	    $skip = 0;
	}
	if (/(POWERS|TEMPERATURE READINGS)/) {
	    $skip = 1;
	}
	if (/fan controlled temperature:/i) {
	    $skip = 1;
	}
	if (/THERMAL PLANE/) {
	    $skip = 1;
	}
	if (/temperature:/i) {
	    $skip = 1;
	}
	s/(Fan \d+ \S+), speed .*/$1/;
	if (/speed/i) {
	    $skip = 1;
	}
	next if $skip;

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

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

    while (<INPUT>) {
    tr/\015//d;
	last if (/^$prompt/);
	next if (/^\s*$/);
	ProcessHistory("FLASH","","","!Flash: $_");
    }
    ProcessHistory("","","","!\n");
    return;
}

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

    while (<INPUT>) {
	tr/\015//d;
	last if (/^$prompt/);
	return(1) if (/Invalid input ->/);
	next if (/^\s*$/);
	next if (/:\s*$/);
	ProcessHistory("MODULE","","","!Module: $_");
    }
    ProcessHistory("","","","!\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/);

	/Current configuration:/i && next;
	/^ver \d+\.\d+/ && next;
	/^module \d+ / && next;

	/^ntp clock-period /    && next; # kill ntp clock-period
	/^ length /		&& next; # kill length on serial lines
	/^ width /		&& next; # kill width on serial lines
	# filter out any RCS/CVS tags to avoid confusing local CVS storage
	s/\$(Revision|Id):/ $1:/;
	# sort secure-mac-addresses.  Note: There is no way to determine which
	# have been added dynamically vs statically.  Thus, sort them?
	/secure-mac-address (\S+)/ &&
	    ProcessHistory("SECMAC","keysort","$1","$_") && next;
	# OR filter them? XXX
	#next if (/secure-mac-address/);
	
	# order access-lists
	/^access-list\s+(\d+)\s+(perm|deny)\s+(\d\S+)(\/\d+)\s*$/ &&
	    ProcessHistory("PACL $1 $2","$aclsort","$3","$_")
	    && next;
	/^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;
	# order logging statements
	/^logging (\d+\.\d+\.\d+\.\d+)/ &&
	    ProcessHistory("LOGGING","ipsort","$1","$_") && next;
	# order/prune snmp-server host/community statements
	if (/^(snmp-server host )(\d+\.\d+\.\d+\.\d+)/) {
	    if ($filter_commstr) {
		ProcessHistory("SNMPSERVERHOST","ipsort","$2","!$1 $2 <removed>\n") && next;
	    } else {
		ProcessHistory("SNMPSERVERHOST","ipsort","$2","$_") && next;
	    }
	}
	if (/^(snmp-server community )(\S+)/) {
	    if ($filter_commstr) {
		ProcessHistory("SNMPSERVERCOMM","keysort","$_","!$1<removed>$'") && next;
	    } else {
		ProcessHistory("SNMPSERVERCOMM","keysort","$_","$_") && next;
	    }
	}
	# order tacacs server statements
	if (/^(tacacs-server key )/ && $filter_pwds >= 1) {
	    ProcessHistory("","","","! $1<removed>\n");
	    next;
	}
	# delete ntp auth password
	if (/^(ntp authentication-key \d+ md5) / && $filter_pwds >= 2) {
	    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 ip nat source static statements
	/^ip nat (\S+) source static (\S+)/ &&
	    ProcessHistory("IP NAT $1","ipsort","$2","$_") && next;

	# filter ssh public key
	if (/^(crypto key generate (rsa|dsa) public_key)/ &&
		$filter_pwds >= 2) {
	    ProcessHistory("","","","!$1 <removed>\n");
	    next;
	}
	# filter ssh private key
	if (/^(crypto key generate (rsa|dsa) private_key)/ &&
		$filter_pwds >= 1) {
	    ProcessHistory("","","","!$1 <removed>\n");
	    next;
	}

	# reorder listing of ports in a vlan
	if (/^ (?:un)?tagged ethe/) {
	    chomp;
	    s/^\s+//;
	    s/\s+$//;

	    my @list = split /\s+ethe\s+/, $_;
	    my $tagtype = shift @list;

	    while (@list) {
		ProcessHistory("","","",
				" $tagtype ethe " . (shift @list) . "\n");
	    }
	    next;
	}


	ProcessHistory("","","","$_");
	# end of config
	if (/^end$/) {
	    $found_end = 1;
	    return(1);
	}
    }
    return(0);
}

# dummy function
sub DoNothing {print STDOUT;}

# Main
@commandtable = (
	{'show version'		=> 'ShowVersion'},
	{'show chassis'		=> 'ShowChassis'},
	{'show module'		=> 'ShowModule'},
	{'show flash'		=> 'ShowFlash'},
	{'write term'		=> '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("|",@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 flogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($debug);
    print STDOUT "executing flogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($log);
    if (defined($ENV{NOPIPE})) {
	system "flogin -t $timeo -c \"$cisco_cmds\" $host </dev/null > $host.raw 2>&1" || die "flogin failed for $host: $!\n";
	open(INPUT, "< $host.raw") || die "flogin failed for $host: $!\n";
    } else {
	open(INPUT,"flogin -t $timeo -c \"$cisco_cmds\" $host </dev/null |") || die "flogin 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: foundry\n!\n");
TOP: while(<INPUT>) {
    tr/\015//d;
    if (/\#exit$/) {
	$clean_run=1;
	last;
    }
    if (/^Error:/) {
	print STDOUT ("$host flogin error: $_");
	print STDERR ("$host flogin 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($ENV{NOPIPE})) {
    unlink("$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);
}