#! /usr/bin/perl
##
## $Id: rancid.in,v 1.218 2006/10/05 04:27:43 heas Exp $
##
## rancid 2.3.2a7
## Copyright (C) 1997-2006 by Terrapin Communications, Inc.
## All rights reserved.
##
## This software may be freely copied, modified and redistributed
## without fee for non-commerical purposes provided that this license
## remains intact and unmodified with any RANCID distribution.
##
## There is no warranty or other guarantee of fitness of this software.
## It is provided solely "as is".  The author(s) disclaim(s) all
## responsibility and liability with respect to this software's usage
## or its effect upon hardware, computer systems, other software, or
## anything else.
##
## Except where noted otherwise, rancid was written by and is maintained by
## Henry Kilmer, John Heasley, Andrew Partan, Pete Whiting, and Austin Schutz.
##
#
#  RANCID - Really Awesome New Cisco confIg Differ
#
# usage: rancid [-dV] [-l] [-f filename | hostname]
#
use Getopt::Std;
getopts('dflV');
if ($opt_V) {
    print "rancid 2.3.2a7\n";
    exit(0);
}
$log = $opt_l;
$debug = $opt_d;
$file = $opt_f;
$host = $ARGV[0];
$clean_run = 0;
$found_end = 0;
$found_version = 0;
$found_env = 0;
$found_diag = 0;
$timeo = 10;				# zyxP791rlogin timeout in seconds

my(@commandtable, %commands, @commands);# command lists
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 processes a "switch enet show"
sub SwitchEnetShow {
    print STDERR "    In SwitchEnetShow: $_" if ($debug);

    # now just copy it verbatim to the history file
    while (<INPUT>) {
    #    tr/\015//d;

        if (/^$prompt/) { $found_env=1; last};
        next if (/^(\s*|\s*$cmd\s*)$/);


                if (/^\/?exit/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","$_");
    }
    return(0);
}



# This routine processes a "config show sys"
sub ShowConfigSys {
    print STDERR "    In ShowConfigSys: $_" if ($debug);
    
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # eat the header line
    #$junk = <INPUT>;
    
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#	                print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");	
#        tr/\015//d; 
	
	if (/^$prompt/) { $found_env=1; last};
        next if (/^(\s*|\s*$cmd\s*)$/);


#        if (/(community)(\s+)(.*)/ &&
 #               defined($ENV{'NOCOMMSTR'})) {
 #           ProcessHistory("","","","\/\*\t$1$2\"<removed>\"\n") && next;
 #       }   
 #       /^(\s+.{2,3}pw )\S+/ &&
 #           ProcessHistory("","","","\/\*$1<removed>\n") && next;
            
        next if (/System up time/);
        next if (/^current time is.*/);
        next if (/^current date is.*/);
        
                if (/^\/?exit/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
		 $found_end = 1;
                
        ProcessHistory("","","","$_");
    }   
    return(0);
}   


# This routine processes a "config show sw"
sub ShowConfigSw {
    print STDERR "    In ShowConfigSw: $_" if ($debug);

        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # eat the header line
    #$junk = <INPUT>;

    # now just copy it verbatim to the history file
    while (<INPUT>) {
 #                       print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
 #       tr/\015//d;
        
        if (/^$prompt/) { $found_env=1; last};
        next if (/^(\s*|\s*$cmd\s*)$/);
                s/\0337//g;


#        if (/(community)(\s+)(.*)/ &&
 #               defined($ENV{'NOCOMMSTR'})) {
 #           ProcessHistory("","","","\/\*\t$1$2\"<removed>\"\n") && next;
 #       }   
 #       /^(\s+.{2,3}pw )\S+/ &&
 #           ProcessHistory("","","","\/\*$1<removed>\n") && next;

#        next if (/^\/\* Configuration dump taken/i);
#        next if (/^\/\* Version.*Base MAC.*/i);

                if (/^\/?exit/) {
                $found_end = 1;
                ProcessHistory("","","","!ETHER CONFIG: $_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","$_");
    }
    return(0);
}

# This routine processes a "ip route status"
sub ShowRouteStatus {
    print STDERR "    In ShowRouteStatus: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
    #                    print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
  #      tr/\015//d;
                s/\0337//g;

        if (/^$prompt/) { $found_env=1; last};


        if (/(^default)(.*00ab 0 )/)
                {
           ProcessHistory("","","","!IP ROUTE: $1$2 <XX>\n") && next;
       }   


                if (/^\/?xit/) {
                $found_end = 1;
                ProcessHistory("","","","!IP ROUTE: $_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!IP ROUTE: $_");
    }
    return(0);
}


# This routine processes a "config show ip"
sub ShowConfigIP {
    print STDERR "    In ShowConfigIP: $_" if ($debug);

        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # eat the header line
    #$junk = <INPUT>;

    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near:$_\n");
   #     tr/\015//d;
	
	 if (/>/) {
                $clean_run = 1;
                return(1);
                }

        if (/^$prompt/) { $found_env=1; last};
        next if (/^(\s*|\s*$cmd\s*)$/);
        next if (/In|Out/);
                s/\0337//g;


#        if (/(community)(\s+)(.*)/ &&
 #               defined($ENV{'NOCOMMSTR'})) {
 #           ProcessHistory("","","","\/\*\t$1$2\"<removed>\"\n") && next;
 #       }   
 #       /^(\s+.{2,3}pw )\S+/ &&
 #           ProcessHistory("","","","\/\*$1<removed>\n") && next;

#        next if (/^\/\* Configuration dump taken/i);
#        next if (/^\/\* Version.*Base MAC.*/i);

                if (/>/) {
                $found_end = 1;
		$clean_run = 1;
                ProcessHistory("","","","!IP CONFIG: $_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!IP CONFIG: $_");
    }
    return(0);
}

# This routine processes a "ether config"
sub ShowEtherConfig {
    print STDERR "    In ShowEtherConfig: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
        tr/\015//d;
                s/\0337//g;

        if (/^$prompt/) { $found_env=1; last};

                if (/>/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!ETHER CONFIG: $_");
    }
    return(0);
}

# This routine processes a "sys version"
sub ShowVersion {
    print STDERR "    In ShowVersion: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
        tr/\015//d;
                s/\0337//g;

        if (/^$prompt/) { $found_env=1; last};
					
	 next if (/system up time/);
		
		
                if (/>/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!SYS VERSION: $_");
    }
    return(0);
}

# This routine processes a "sys feature"
sub ShowFeature {
    print STDERR "    In ShowFeature: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
        tr/\015//d;
                s/\0337//g;

        if (/^$prompt/) { $found_env=1; last};

                if (/>/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!SYS FEATURE: $_");
    }
    return(0);
}


# is routine processes a "sys view autoexec.net"
sub ShowAutoexec {
    print STDERR "    In ShowAutoexec: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");
        tr/\015//d;
                s/\0337//g;

        if (/^$prompt/) { $found_env=1; last};

                if (/>/) {
                $found_end = 1;
                ProcessHistory("","","","!AUTOEXEC.NET: $_");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!AUTOEXEC.NET: $_");
    }
    return(0);
}

# is routine processes a "sys hostname"
sub ShowHostname {
    print STDERR "    In ShowHostname: $_" if ($debug);
        #        print STDERR ("PROMPT MATCH $prompt near $_\n");
    # now just copy it verbatim to the history file
    while (<INPUT>) {
#                        print STDERR ("pr = $prompt fo = $found_end cl =  $clean_run near $_\n");

	        s/\0337//g;
        if (/^$prompt/) { $found_env=1; last};

                if (/>/) {
                $found_end = 1;
                ProcessHistory("","","","$_\n");
                return(1);
                }
                 $found_end = 1;

        ProcessHistory("","","","!HOSTNAME:$_");
	print STDERR ("$_");
    }
    return(0);
}


# dummy function
sub DoNothing {print STDOUT;}

# Main
@commandtable = (
#	{'sys hostname'			=>	'ShowHostname'},
	{'sys view autoexec.net'	   => 'ShowAutoexec'},
        {'ip route status'              => 'ShowRouteStatus'},
        {'sys feature'                     => 'ShowFeature'},	
        {'ip ifconfig'              => 'ShowConfigIP'},	
	{'sys version'		=> 'ShowVersion'},
	{'ether config'              => 'ShowEtherConfig'},
#        {'ip route status'              => 'ShowRouteStatus'},
#        {'ip ifconfig'              => 'ShowConfigIP'},
#	{''				=> 'DoNothing'},
        {'sys hostname'                 =>      'ShowHostname'}	
);
# 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 zyxP791rlogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($debug);
    print STDOUT "executing zyxP791rlogin -t $timeo -c\"$cisco_cmds\" $host\n" if ($log);
    if (defined($ENV{NOPIPE})) {
	system "zyxP791rlogin -t $timeo -c \"$cisco_cmds\" $host </dev/null > $host.raw 2>&1" || die "zyxP791rlogin failed for $host: $!\n";
	open(INPUT, "< $host.raw") || die "zyxP791rlogin failed for $host: $!\n";
    } else {
	open(INPUT,"zyxP791rlogin -t $timeo -c \"$cisco_cmds\" $host </dev/null |") || die "zyxP791rlogin failed for $host: $!\n";
    }
}

# 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: ZyxelPrestige791R\n!\n");
ProcessHistory("COMMENTS","keysort","B0","!\n");
ProcessHistory("COMMENTS","keysort","D0","!\n");
ProcessHistory("COMMENTS","keysort","F0","!\n");
ProcessHistory("COMMENTS","keysort","G0","!\n");
TOP: while(<INPUT>) {
#	        print STDERR ("clean_run =  $clean_run prompt = $prompt near $_");
    tr/\055//d;
   if (/\076exit/) {
	$found_end = 1;
#	$clean_run=1;
#	print STDERR ("MATCH clean_run clean_run near $_\n");
	last;
    }
#	 print STDERR ("clean_run =  $clean_run near $_\n");
    if (/^Error:/) {
	print STDOUT ("$host zyxP791rlogin error: $_");
	print STDERR ("$host zyxP791rlogin error: $_") if ($debug);
	$clean_run=0;
	last;
    }
    while (/\s*($cmds_regexp)\s*$/) {
#	print STDERR ("PROMPT MATCH $prompt near while\n");
	$cmd = $1;
	if (!defined($prompt)) {
	    $prompt = ($_ =~ /^([^>]+>)/)[0];
#           print STDERR ("try PROMPT MATCH: $prompt\n") if ($debug);
	    $prompt =~ s/([][}{)(\\])/\\$1/g;
#	    print STDERR ("try 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;
	}
#	 print STDERR ("before rval = $rval $prompt near while\n");
	$rval = &{$commands{$cmd}};
 #        print STDERR ("after rval = $rval $prompt near while\n");
	delete($commands{$cmd});
#	print STDERR ("delete($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);
    }
#	$found_end = 0;
#	 $clean_run = 1;
    if (!$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);
}