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#!/bin/sh
#! -*-perl-*-
eval 'exec perl -x -S $0 ${1+"$@"}'
    if 0;
# This file is part of Ping903
# Copyright (C) 2020 Sergey Poznyakoff
# 
# Ping903 is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# 
# Ping903 is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with Ping903.  If not, see <http://www.gnu.org/licenses/>.

=head1 NAME

inspect - inspect the Ping903 daemon configuration

=head1 SYNOPSIS

B<inspect>
[B<-U> I<URL>]
[B<--url>=I<URL>]

=head1 DESCRIPTION

Queries the running B<ping903> instance and displays its configuration on
standard output.  The output is formatted as a valid B<ping903> configuration
file.

=head1 OPTIONS

=head2 General options

=over 4

=item B<-U>, B<--url>=I<URL>

URL of the running L<ping903> daemon.  Default is C<http://localhost:8080>.

=back

=head2 Informative options

=over 4

=item B<-?>

Display short help summary.

=item B<--usage>

Display command line usage summary.

=item B<--help>

Display a detailed program manual.

=back

=head1 SEE ALSO

L<ping903>,
L<DBI>.

=cut

use strict;
use warnings;
use LWP::UserAgent;
use HTTP::Status qw(:constants);
use JSON;
use Getopt::Long qw(:config gnu_getopt no_ignore_case);
use Pod::Usage;
use Pod::Man;

my $baseurl = 'http://localhost:8080';
my $user;
my $password;

GetOptions(
    'U|url=s' => \$baseurl,
    'help' => sub {
	pod2usage(-exitstatus => 0, -verbose => 2);
    },
    'usage' => sub {
	pod2usage(-exitstatus => 0, -verbose => 0);
    },
    'hh|?' => sub {
	pod2usage(-message => "dbload - load IP addresses to ping903",
		  -exitstatus => 0);
    },
) or exit(1);
die "too many arguments; try `$0 --help' for more info\n" if @ARGV;

my $ua = new LWP::UserAgent;

my $response = $ua->get("$baseurl/config");
unless ($response->is_success) {
    if ($response->code eq HTTP_UNAUTHORIZED) {
	my $s = $response->header('WWW-Authenticate');
	$s =~ s/Basic realm=//;
	$s =~ s/^"(.*)"$/$1/;
	$s =~ s/\\([\\\"])/$1/g;
	die "$s: not authorized";
    }
    die $response->status_line;
}

my $resp = JSON->new->decode($response->decoded_content);
foreach my $kw (sort keys %$resp) {
    my $val = $resp->{$kw} or next;
    if ($kw eq 'auth') {
	my $delim = '';
	foreach my $acl (@$val) {
	    print "${delim}auth $acl->{type} $acl->{method} $acl->{url}";
	    if (exists($acl->{'passwd-file'})) {
		print " $acl->{'passwd-file'}";
		if (exists($acl->{realm})) {
		    print " $acl->{realm}";
		}
	    }
	    $delim = "\n";
	}
    } else {
	print "$kw ";

	if (ref($val) eq 'ARRAY') {
	    print "<<EOF\n";
	    foreach my $ip (@$val) {
		print "    $ip\n";
	    }
	    print "EOF";
        } elsif (JSON::is_bool($val)) {
	    print $val ? "on" : "off";
        } else {
	    print $val
	}
    }
    print "\n";
}

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