#! /usr/pkg/bin/perl
##
## $Id: plogin.in 3477 2016-10-25 22:47:54Z heas $
##
## rancid 3.6.2
## Copyright (c) 1997-2016 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. All advertising materials mentioning features or use of this software
##    must display the following acknowledgement:
##        This product includes software developed by Henry Kilmer and John
##        Heasley and its contributors for RANCID.
## 4. 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.
## 5. It is requested that non-binding fixes and modifications be contributed
##    back to RANCID.
##
## 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
#
#  plogin - poly-login; use router.db files and rancid.{base,types}.conf
#	    configurations to determine which login script to execute.
#
use 5.0010;
use strict 'vars';
use warnings;
no warnings 'uninitialized';
use Exporter;
use Getopt::Long;
#  use Getopt::Long qw(:config no_ignore_case bundling);
Getopt::Long::Configure ("bundling", "no_ignore_case");
our($opt_d, $opt_S, $opt_V, $opt_autoenable, $opt_noenable, $opt_c, @opt_E,
    $opt_e, $opt_f, $opt_h, $opt_m, $opt_M, $opt_p, $opt_r, $opt_s, $opt_t,
    $opt_u, $opt_v, $opt_w, $opt_x, $opt_y, $opt_z);
GetOptions('d' => \$opt_d, 'S' => \$opt_S, 'V' => \$opt_V,
	'autoenable' => \$opt_autoenable, 'noenable' => \$opt_noenable,
	'c=s' => \$opt_c, "E=s@" => \@opt_E, 'e=s' => \$opt_e, 'f=s' => \$opt_f,
	'h=s' => \$opt_h, 'm' => \$opt_m, 'M' => \$opt_M, 'p=s' => \$opt_p,
	'r=s' => \$opt_r, 's=s' => \$opt_s, 't=s' => \$opt_t, 'u=s' => \$opt_u,
	'v=s' => \$opt_v, 'w=s' => \$opt_w, 'x=s' => \$opt_x, 'y=s' => \$opt_y,
	'z=s' => \$opt_z);
my($BASEDIR, $LIST_OF_GROUPS, $cmd, $i, $j, @routers);
BEGIN {
    push(@INC, "/usr/pkg/lib/rancid");
}
use rancid;
our @ISA = qw(Exporter rancid);

sub usage()
{
    print STDERR "plogin [-dSV] [-autoenable] [-noenable] [-c command] [-Evar=x] [-e enable-password] [-f cloginrc-file] [-p user-password] [-r passphrase] [-s script-file] [-t timeout] [-u username] [-v vty-password] [-w enable-username] [-x command-file] [-y ssh_cypher_type] [-z device_type] router [router...]\n";
    exit 64;
}

# make OUTPUT unbuffered if debugging
if ($opt_d) { $| = 1; }

if ($opt_h) {
    usage();
}

# option handling initialization
if ($opt_V) {
    print "plogin: rancid 3.6.2\n";
    # do not exit; exec the script with -V and it will exit
}
$cmd .= " -d" if ($opt_d);
$cmd .= " -m" if ($opt_m);
$cmd .= " -M" if ($opt_M);
$cmd .= " -S" if ($opt_S);
$cmd .= " -V" if ($opt_V);
$cmd .= " -autoenable" if ($opt_autoenable);
$cmd .= " -noenable" if ($opt_noenable);
$cmd .= " -c '$opt_c'" if (length($opt_c));
foreach $i (@opt_E) {
    $cmd .= " -E$i";
}
$cmd .= " -e '$opt_e'" if (length($opt_e));
$cmd .= " -f '$opt_f'" if (length($opt_f));
$cmd .= " -p '$opt_p'" if (length($opt_p));
$cmd .= " -r '$opt_r'" if (length($opt_r));
$cmd .= " -s '$opt_s'" if (length($opt_s));
$cmd .= " -t $opt_s" if (length($opt_t));
$cmd .= " -u '$opt_u'" if (length($opt_u));
$cmd .= " -v '$opt_v'" if (length($opt_v));
$cmd .= " -w '$opt_w'" if (length($opt_w));
$cmd .= " -x '$opt_x'" if (length($opt_x));
$cmd .= " -y '$opt_y'" if (length($opt_y));
$devtype = $opt_z;
foreach $i (@ARGV) {
    $cmd .= " $i";
    push(@routers, $i);
}

# what is the device type, supplied or looked-up
if ($opt_z) {
    $devtype = $opt_z;
} else {
    # Look in router.dbs for device type.
    # read rancid.conf for BASEDIR and LIST_OF_GROUPS?
    my($ENVFILE) = "/usr/pkg/etc/rancid/rancid.conf";
    open(INPUT, "< $ENVFILE") || die "Could not open $ENVFILE: $!";
    close(INPUT);
    open(INPUT,
	 "sh -c \'. $ENVFILE; echo \"BASEDIR=\$BASEDIR\"; echo \"LIST_OF_GROUPS=\$LIST_OF_GROUPS\"\' |") ||
	 die "Could not open $ENVFILE: $!";
    while (<INPUT>) {
        chomp;
	s/#.$//;
	s/^\s+//;
        my($varname, $value) = split('=');
	if ($varname eq "BASEDIR") {
	    $BASEDIR = $value;
	}
	if ($varname eq "LIST_OF_GROUPS") {
	    $LIST_OF_GROUPS = $value;
	    $LIST_OF_GROUPS =~ s/^\s+//;
	    $LIST_OF_GROUPS =~ s/\s+$//;
	}
    }
    close(INPUT);

    # read each router.db for the routername and thus the devtype
    foreach $i (split(/\s+/, $LIST_OF_GROUPS)) {
	if (!open(INPUT, "< $BASEDIR/$i/router.db")) {
	    warn "Could not open $BASEDIR/$i/router.db: $!";
	    next;
	}
	while (<INPUT>) {
	    chomp;
	    s/#.$//;
	    s/^\s+//;
            my($router, $type, $state) = split('\;');
	    foreach $j (@routers) {
		if ($router eq $j) {
		    $devtype = $type;
		    close(INPUT);
		    goto FOUND;
		}
	    }
	}
	close(INPUT);
    }
}

FOUND:
if (length($devtype) < 1) {
    die "Couldn't find device type by hostname in router.dbs\n";
}

# load device type spec, build @commandtable and load modules
if (loadtype($devtype)) {
    die "Couldn't load device type spec for $rancid::devtype\n";
}
if (! defined($lscript)) {
    die "login script not defined for device type $rancid::devtype\n";
}
exec($lscript . " $cmd") ||
printf(STDERR "exec($lscript) failed router manufacturer $devtype: $!\n");
exit(-1);
