#! /usr/bin/perl
##
## $Id: rancid.in,v 1.193 2005/08/14 22:29:29 heas Exp $
##
## Copyright (C) 1997-2004 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
#
# Dell mods by: Jeremy Singletary
# drancid - Dell power connect plugin for rancid
#
# usage: drancid [-d] [-l] [-f filename | $host]
#
use Getopt::Std;
getopts('dfl');
$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 = 90;				# dlogin 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 parses "show version"
sub ShowVersion {
    print STDERR "    In ShowVersion: $_" if ($debug);

    while (<INPUT>) {
        warn "ShowVersion: $_" if ($debug);	# lets see every line for debug
	tr/\015//d;
	if (/^$prompt/) { warn "FOUND PROMPT: $prompt\n"; $found_version=1; last;}
	next if(/^(\s*|\s*$cmd\s*)$/);
	return(1) if /^% Unrecognized command/;
	return(0) if ($found_version);		# Only do this routine once
	# the pager can not be disabled per-session on the dell
	s/^More: <space>.+<return> \033\[\K//g;
	ProcessHistory("","","","$_");
    }
    ProcessHistory("","","","!\n");
    return(0);
}

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

    while (<INPUT>) {
        warn "ShowVLAN: $_" if ($debug);	# lets see every line for debug
	tr/\015//d;
	last if (/^$prompt/);
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /^% Unrecognized command/;
	# the pager can not be disabled per-session on the dell
	s/^More: <space>.+<return> \033\[\K//g;
	ProcessHistory("","","","$_");
    }
    ProcessHistory("","","","!\n");
    return(0);
}

# This routine processes a "write term"
sub WriteTerm {
    print STDERR "    In WriteTerm: $_" if ($debug);
    while (<INPUT>) {
        warn "WriteTerm: $_" if ($debug);	# lets see every line for debug
	tr/\015//d;
        if (/$prompt\s?exit$/) { warn "left WriteTerm on: $_"; $clean_run=1;last; }
	next if (/^(\s*|\s*$cmd\s*)$/);
	return(1) if /^% Unrecognized command/;
	# the pager can not be disabled per-session on the dell
	s/^More: <space>.+<return> \033\[\K//g;

        if (/^(enable )?(password|passwd)( level \d+)? / && $filter_pwds >= 1) {
            ProcessHistory("ENABLE","","","!$1$2$3 <removed>\n");
            next;
        }
        if (/^username (\S+)(\s.*)? password ((\d) \S+|\S+)/) {
            if ($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 (/^(snmp-server community) (\S+)/) {
            if (defined($ENV{'NOCOMMSTR'})) {
                ProcessHistory("SNMPSERVERCOMM","keysort","$_","!$1 <removed>$'") && next;
            } else {
                ProcessHistory("SNMPSERVERCOMM","keysort","$_","$_") && next;
            }
        }
        # prune tacacs/radius server keys
        if (/^(tacacs-server|radius-server) key / && $filter_pwds >= 1) {
            ProcessHistory("","","","!$1 key <removed>\n"); next;
        }
        if (/^((tacacs-server|radius-server) host \S+ key) / &&
                                                        $filter_pwds >= 1) {
            ProcessHistory("","","","!$1 <removed>\n"); next;
        }
	ProcessHistory("","","","$_");
    }
    $found_end = 1;	# no config end marker, just hard set this.
    ProcessHistory("","","","end\n");
    return(0);
}

# dummy function
sub DoNothing {print STDOUT;}

# Main
@commandtable = (
	{'show version'			=> 'ShowVersion'},
	{'show vlan'			=> 'ShowVLAN'},
	{'show running-config'		=> '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);

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

# 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: Dell\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>) {
    tr/\015//d;
    if (/[>#]\s?exit$/) {
	$clean_run=1;
	last;
    }
    if (/^Error:/) {
	print STDOUT ("$host dlogin error: $_");
	print STDERR ("$host dlogin error: $_") if ($debug);
	$clean_run=0;
	last;
    }
    while (/#\s*($cmds_regexp)\s*$/) {
	$cmd = $1;
	if (!defined($prompt)) {
	    $prompt = ($_ =~ /^([^#]+#)/)[0];
	    $prompt =~ s/([][}{)(\\])/\\$1/g;
	    $prompt =~ tr/\033\\\[K//d;
	    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 "$host: missed cmd(s): %s\n", join(',', keys(%commands))) unless ($debug);
	printf(STDERR "$host: missed cmd(s): %s\n", join(',', keys(%commands))) if ($debug);
    }
    if (!$clean_run || !$found_end) {
	warn "found_end = $found_end, clean_run = $clean_run\n"; # jeremys debug
	print STDOUT "$host: End of run not found\n" unless ($debug);
	print STDERR "$host: End of run not found\n" if ($debug);
	system("/usr/bin/tail -1 $host.new");
    }
    unlink "$host.new" if (! $debug);
}