<?php
/**
* This file is a part of the CIDRAM package.
* Homepage: https://cidram.github.io/
*
* CIDRAM COPYRIGHT 2016 and beyond by Caleb Mazalevskis (Maikuolan).
*
* License: GNU/GPLv2
* @see LICENSE.txt
*
* This file: Configuration handler (last modified: 2019.08.31).
*/
/** Prevents execution from outside of CIDRAM. */
if (!defined('CIDRAM')) {
die('[CIDRAM] This should not be accessed directly.');
}
/** CIDRAM version number (SemVer). */
$CIDRAM['ScriptVersion'] = '2.1.0';
/** CIDRAM version identifier (complete notation). */
$CIDRAM['ScriptIdent'] = 'CIDRAM v' . $CIDRAM['ScriptVersion'];
/** CIDRAM User Agent (for external requests). */
$CIDRAM['ScriptUA'] = $CIDRAM['ScriptIdent'] . ' (https://cidram.github.io/)';
/** Default timeout (for external requests). */
$CIDRAM['Timeout'] = 12;
/** Determine PHP path. */
$CIDRAM['CIDRAM_PHP'] = defined('PHP_BINARY') ? PHP_BINARY : '';
/** Fetch domain segment of HTTP_HOST (needed for writing cookies safely). */
$CIDRAM['HTTP_HOST'] = empty($_SERVER['HTTP_HOST']) ? '' : (
strpos($_SERVER['HTTP_HOST'], ':') === false ? $_SERVER['HTTP_HOST'] : substr($_SERVER['HTTP_HOST'], 0, strpos($_SERVER['HTTP_HOST'], ':'))
);
/** CIDRAM favicon. */
$CIDRAM['favicon'] =
'R0lGODlhEAAQAMIBAAAAAGYAAJkAAMz//2YAAGYAAGYAAGYAACH5BAEKAAQALAAAAAAQABA' .
'AAANBCLrcKjBK+eKQN76RIb+g0oGewAmiZZbZRppnC0y0BgR4rutK8OWfn2jgI3KKxeHvyB' .
'wMkc0kIEp13nZYnGPLSAAAOw==';
/** Checks whether the CIDRAM configuration file is readable. */
if (!isset($GLOBALS['CIDRAM_Config']) && !is_readable($CIDRAM['Vault'] . 'config.ini')) {
header('Content-Type: text/plain');
die('[CIDRAM] Can\'t read the configuration file! Please reconfigure CIDRAM.');
}
/** Checks whether the CIDRAM configuration defaults file is readable. */
if (!is_readable($CIDRAM['Vault'] . 'config.yaml')) {
header('Content-Type: text/plain');
die('[CIDRAM] Can\'t read the configuration defaults file! Please reconfigure CIDRAM.');
}
if (isset($GLOBALS['CIDRAM_Config'])) {
/** Provides a means of running tests with configuration values specific to those tests. */
$CIDRAM['Config'] = $GLOBALS['CIDRAM_Config'];
} else {
/** Attempts to parse the standard CIDRAM configuration file. */
$CIDRAM['Config'] = parse_ini_file($CIDRAM['Vault'] . 'config.ini', true);
}
/** Kills the script if it isn't able to load any configuration. */
if ($CIDRAM['Config'] === false) {
header('Content-Type: text/plain');
die('[CIDRAM] Configuration file is corrupt! Please reconfigure CIDRAM.');
}
/** Checks for the existence of the HTTP_HOST "configuration overrides file". */
if (
!empty($_SERVER['HTTP_HOST']) &&
($CIDRAM['Domain'] = preg_replace('/^www\./', '', strtolower($_SERVER['HTTP_HOST']))) &&
!preg_match('/[^.\da-z-]/', $CIDRAM['Domain']) &&
is_readable($CIDRAM['Vault'] . $CIDRAM['Domain'] . '.config.ini')
) {
/** Attempts to parse the overrides file found (this is configuration specific to the requested domain). */
if ($CIDRAM['Overrides'] = parse_ini_file($CIDRAM['Vault'] . $CIDRAM['Domain'] . '.config.ini', true)) {
array_walk($CIDRAM['Overrides'], function ($Keys, $Category) use (&$CIDRAM) {
foreach ($Keys as $Directive => $Value) {
$CIDRAM['Config'][$Category][$Directive] = $Value;
}
});
$CIDRAM['Overrides'] = true;
}
}
/** Kills the script if parsing the configuration overrides file fails. */
if (isset($CIDRAM['Overrides']) && $CIDRAM['Overrides'] === false) {
header('Content-Type: text/plain');
die('[CIDRAM] Configuration overrides file is corrupt! Can\'t continue until this is resolved.');
}
/** Attempts to parse the CIDRAM configuration defaults file. */
$CIDRAM['YAML']->process($CIDRAM['ReadFile']($CIDRAM['Vault'] . 'config.yaml'), $CIDRAM['Config']);
/** Kills the script if parsing the configuration defaults file fails. */
if (empty($CIDRAM['Config']['Config Defaults'])) {
header('Content-Type: text/plain');
die('[CIDRAM] Configuration defaults file is corrupt! Please reinstall CIDRAM.');
}
/** Check for supplementary configuration relating to IPv4 signature files. */
if (!empty($CIDRAM['Config']['signatures']['ipv4'])) {
foreach ($CIDRAM['Supplementary']($CIDRAM['Config']['signatures']['ipv4']) as $CIDRAM['Supplement']) {
$CIDRAM['YAML']->process($CIDRAM['ReadFile']($CIDRAM['Vault'] . $CIDRAM['Supplement']), $CIDRAM['Config']);
}
}
/** Check for supplementary configuration relating to IPv6 signature files. */
if (!empty($CIDRAM['Config']['signatures']['ipv6'])) {
foreach ($CIDRAM['Supplementary']($CIDRAM['Config']['signatures']['ipv6']) as $CIDRAM['Supplement']) {
$CIDRAM['YAML']->process($CIDRAM['ReadFile']($CIDRAM['Vault'] . $CIDRAM['Supplement']), $CIDRAM['Config']);
}
}
/** Check for supplementary configuration relating to modules. */
if (!empty($CIDRAM['Config']['signatures']['modules'])) {
foreach ($CIDRAM['Supplementary']($CIDRAM['Config']['signatures']['modules']) as $CIDRAM['Supplement']) {
$CIDRAM['YAML']->process($CIDRAM['ReadFile']($CIDRAM['Vault'] . $CIDRAM['Supplement']), $CIDRAM['Config']);
}
}
/** Cleanup. */
unset($CIDRAM['Supplement']);
/** Perform fallbacks and autotyping for missing configuration directives. */
$CIDRAM['Fallback']($CIDRAM['Config']['Config Defaults'], $CIDRAM['Config']);
/** Failsafe for weird ipaddr configuration. */
$CIDRAM['IPAddr'] = (
$CIDRAM['Config']['general']['ipaddr'] !== 'REMOTE_ADDR' && empty($_SERVER[$CIDRAM['Config']['general']['ipaddr']])
) ? 'REMOTE_ADDR' : $CIDRAM['Config']['general']['ipaddr'];
/** Ensure we have an IP address variable to work with. */
if (!isset($_SERVER[$CIDRAM['IPAddr']])) {
$_SERVER[$CIDRAM['IPAddr']] = '';
}
/** Adjusted present time. */
$CIDRAM['Now'] = time() + ($CIDRAM['Config']['general']['time_offset'] * 60);
/** Set timezone. */
if (!empty($CIDRAM['Config']['general']['timezone']) && $CIDRAM['Config']['general']['timezone'] !== 'SYSTEM') {
date_default_timezone_set($CIDRAM['Config']['general']['timezone']);
}
/**
* Process the request query and query variables (if any exist); These may be
* occasionally used by certain extended rulesets.
*/
if (!empty($_SERVER['QUERY_STRING'])) {
$CIDRAM['Query'] = $_SERVER['QUERY_STRING'];
parse_str($_SERVER['QUERY_STRING'], $CIDRAM['QueryVars']);
} else {
$CIDRAM['Query'] = '';
$CIDRAM['QueryVars'] = [];
}
/** Set default hashing algorithm. */
$CIDRAM['DefaultAlgo'] = (
!empty($CIDRAM['Config']['general']['default_algo']) && defined($CIDRAM['Config']['general']['default_algo'])
) ? constant($CIDRAM['Config']['general']['default_algo']) : 1;
/** Revert script ident if "hide_version" is true. */
if (!empty($CIDRAM['Config']['general']['hide_version'])) {
$CIDRAM['ScriptIdent'] = 'CIDRAM';
}
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