#!/usr/bin/perl

# cpanel - generate_errordoc-conf                  Copyright 2020 cPanel, L.L.C.
#                                                           All rights reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

# NOTE: This performs similar but more general functionality as:
#   Cpanel::AdvConfig::apache::includes::init()

use strict;
use warnings;

package generate_errordoc_conf;

# NOTE: this used to depend on HTTP::Status, which on CentOS is in the package
# perl-libwww-perl.   For reasons we cannot understand that package is not
# available on OBS, so to work around that, I extracted this hash from other
# sources.

my %code_to_text = (
    100 => 'Continue',
    101 => 'Switching Protocols',
    102 => 'Processing',
    103 => 'Early Hints',
    200 => 'OK',
    201 => 'Created',
    202 => 'Accepted',
    203 => 'Non-Authoritative Information',
    204 => 'No Content',
    205 => 'Reset Content',
    206 => 'Partial Content',
    207 => 'Multi-Status',
    208 => 'Already Reported',
    226 => 'IM Used',
    300 => 'Multiple Choices',
    301 => 'Moved Permanently',
    302 => 'Found',
    303 => 'See Other',
    304 => 'Not Modified',
    305 => 'Use Proxy',
    307 => 'Temporary Redirect',
    308 => 'Permanent Redirect',
    400 => 'Bad Request',
    401 => 'Unauthorized',
    402 => 'Payment Required',
    403 => 'Forbidden',
    404 => 'Not Found',
    405 => 'Method Not Allowed',
    406 => 'Not Acceptable',
    407 => 'Proxy Authentication Required',
    408 => 'Request Timeout',
    409 => 'Conflict',
    410 => 'Gone',
    411 => 'Length Required',
    412 => 'Precondition Failed',
    413 => 'Payload Too Large',
    414 => 'URI Too Long',
    415 => 'Unsupported Media Type',
    416 => 'Range Not Satisfiable',
    417 => 'Expectation Failed',
    421 => 'Misdirected Request',
    422 => 'Unprocessable Entity',
    423 => 'Locked',
    424 => 'Failed Dependency',
    425 => 'Too Early',
    426 => 'Upgrade Required',
    428 => 'Precondition Required',
    429 => 'Too Many Requests',
    431 => 'Request Header Fields Too Large',
    449 => 'Retry with',
    451 => 'Unavailable For Legal Reasons',
    500 => 'Internal Server Error',
    501 => 'Not Implemented',
    502 => 'Bad Gateway',
    503 => 'Service Unavailable',
    504 => 'Gateway Timeout',
    505 => 'HTTP Version Not Supported',
    506 => 'Variant Also Negotiates',
    507 => 'Insufficient Storage',
    508 => 'Loop Detected',
    509 => 'Bandwidth Limit Exceeded',
    510 => 'Not Extended',
    511 => 'Network Authentication Required',
);
 
our @DefaultErrorCodes = ( 400 .. 417, 422 .. 424, 500 .. 507, 510 );

sub generate_errordoc {
    for my $code_num (@DefaultErrorCodes) {
        my $code_type = $code_to_text{$code_num};
        $code_type ||= "Unknown Status";

        printf( "# %d - %s\n", $code_num, $code_type || '<Unknown HTTP Error Code>' );
        printf( "ErrorDocument %d /%d.shtml\n\n", $code_num, $code_num );
    }
}

package main;

generate_errordoc_conf::generate_errordoc() unless caller();