<?php
/**
* @package Airtime
* @copyright 2011 Sourcefabric o.p.s.
* @license http://www.gnu.org/licenses/gpl-3.0.txt
*/
// Do not allow remote execution
$arr = array_diff_assoc($_SERVER, $_ENV);
if (isset($arr["DOCUMENT_ROOT"]) && ($arr["DOCUMENT_ROOT"] != "") ) {
header("HTTP/1.1 400");
header("Content-type: text/plain; charset=UTF-8");
echo "400 Not executable\r\n";
exit(1);
}
//make sure user has Postgresql PHP extension installed.
if (!function_exists('pg_connect')) {
trigger_error("PostgreSQL PHP extension required and not found.", E_USER_ERROR);
exit(2);
}
/* This class deals with the config files stored in /etc/airtime */
class AirtimeIni
{
const CONF_FILE_AIRTIME = "/etc/airtime/airtime.conf";
const CONF_FILE_PYPO = "/etc/airtime/pypo.cfg";
const CONF_FILE_RECORDER = "/etc/airtime/recorder.cfg";
const CONF_FILE_API_CLIENT = "/etc/airtime/api_client.cfg";
const CONF_FILE_LIQUIDSOAP = "/etc/airtime/liquidsoap.cfg";
const CONF_FILE_MEDIAMONITOR = "/etc/airtime/media-monitor.cfg";
const CONF_FILE_MONIT = "/etc/monit/conf.d/airtime-monit.cfg";
public static function IniFilesExist()
{
$configFiles = array(AirtimeIni::CONF_FILE_AIRTIME,
AirtimeIni::CONF_FILE_PYPO,
AirtimeIni::CONF_FILE_RECORDER,
AirtimeIni::CONF_FILE_LIQUIDSOAP,
AirtimeIni::CONF_FILE_MEDIAMONITOR);
$exist = false;
foreach ($configFiles as $conf) {
if (file_exists($conf)) {
echo "Existing config file detected at $conf".PHP_EOL;
$exist = true;
}
}
return $exist;
}
/**
* This function creates the /etc/airtime configuration folder
* and copies the default config files to it.
*/
public static function CreateIniFiles()
{
if (!file_exists("/etc/airtime/")){
if (!mkdir("/etc/airtime/", 0755, true)){
echo "Could not create /etc/airtime/ directory. Exiting.";
exit(1);
}
}
if (!copy(AirtimeInstall::GetAirtimeSrcDir()."/build/airtime.conf", AirtimeIni::CONF_FILE_AIRTIME)){
echo "Could not copy airtime.conf to /etc/airtime/. Exiting.";
exit(1);
}
if (!copy(__DIR__."/../../python_apps/api_clients/api_client.cfg", AirtimeIni::CONF_FILE_API_CLIENT)){
echo "Could not copy api_client.cfg to /etc/airtime/. Exiting.";
exit(1);
}
if (!copy(__DIR__."/../../python_apps/pypo/pypo.cfg", AirtimeIni::CONF_FILE_PYPO)){
echo "Could not copy pypo.cfg to /etc/airtime/. Exiting.";
exit(1);
}
if (!copy(__DIR__."/../../python_apps/show-recorder/recorder.cfg", AirtimeIni::CONF_FILE_RECORDER)){
echo "Could not copy recorder.cfg to /etc/airtime/. Exiting.";
exit(1);
}
if (!copy(__DIR__."/../../python_apps/pypo/liquidsoap_scripts/liquidsoap.cfg", AirtimeIni::CONF_FILE_LIQUIDSOAP)){
echo "Could not copy liquidsoap.cfg to /etc/airtime/. Exiting.";
exit(1);
}
if (!copy(__DIR__."/../../python_apps/media-monitor/media-monitor.cfg", AirtimeIni::CONF_FILE_MEDIAMONITOR)){
echo "Could not copy media-monitor.cfg to /etc/airtime/. Exiting.";
exit(1);
}
}
public static function CreateMonitFile(){
if (!copy(__DIR__."/../../python_apps/monit/airtime-monit.cfg", AirtimeIni::CONF_FILE_MONIT)){
echo "Could not copy airtime-monit.cfg to /etc/monit/conf.d/. Exiting.";
exit(1);
}
}
public static function RemoveMonitFile(){
@unlink("/etc/monit/conf.d/airtime-monit.cfg");
}
/**
* This function removes /etc/airtime and the configuration
* files present within it.
*/
public static function RemoveIniFiles()
{
if (file_exists(AirtimeIni::CONF_FILE_AIRTIME)){
unlink(AirtimeIni::CONF_FILE_AIRTIME);
}
if (file_exists(AirtimeIni::CONF_FILE_PYPO)){
unlink(AirtimeIni::CONF_FILE_PYPO);
}
if (file_exists(AirtimeIni::CONF_FILE_RECORDER)){
unlink(AirtimeIni::CONF_FILE_RECORDER);
}
if (file_exists(AirtimeIni::CONF_FILE_LIQUIDSOAP)){
unlink(AirtimeIni::CONF_FILE_LIQUIDSOAP);
}
//wait until Airtime 1.9.0
if (file_exists(AirtimeIni::CONF_FILE_MEDIAMONITOR)){
unlink(AirtimeIni::CONF_FILE_MEDIAMONITOR);
}
if (file_exists("etc/airtime")){
rmdir("/etc/airtime/");
}
}
/**
* This function generates a random string.
*
* The random string uses two parameters: $p_len and $p_chars. These
* parameters do not need to be provided, in which case defaults are
* used.
*
* @param string $p_len
* How long should the generated string be.
* @param string $p_chars
* String containing chars that should be used for generating.
* @return string
* The generated random string.
*/
public static function GenerateRandomString($p_len=20, $p_chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789')
{
$string = '';
for ($i = 0; $i < $p_len; $i++)
{
$pos = mt_rand(0, strlen($p_chars)-1);
$string .= $p_chars{$pos};
}
return $string;
}
/**
* This function updates an INI style config file.
*
* A property and the value the property should be changed to are
* supplied. If the property is not found, then no changes are made.
*
* @param string $p_filename
* The path the to the file.
* @param string $p_property
* The property to look for in order to change its value.
* @param string $p_value
* The value the property should be changed to.
*
*/
public static function UpdateIniValue($p_filename, $p_property, $p_value)
{
$lines = file($p_filename);
$n=count($lines);
foreach ($lines as &$line) {
if ($line[0] != "#"){
$key_value = explode("=", $line);
$key = trim($key_value[0]);
if ($key == $p_property){
$line = "$p_property = $p_value".PHP_EOL;
}
}
}
$fp=fopen($p_filename, 'w');
for($i=0; $i<$n; $i++){
fwrite($fp, $lines[$i]);
}
fclose($fp);
}
/**
* After the configuration files have been copied to /etc/airtime,
* this function will update them to values unique to this
* particular installation.
*/
public static function UpdateIniFiles()
{
$api_key = AirtimeIni::GenerateRandomString();
AirtimeIni::UpdateIniValue(AirtimeIni::CONF_FILE_AIRTIME, 'api_key', $api_key);
AirtimeIni::UpdateIniValue(AirtimeIni::CONF_FILE_AIRTIME, 'airtime_dir', AirtimeInstall::CONF_DIR_WWW);
AirtimeIni::UpdateIniValue(AirtimeIni::CONF_FILE_PYPO, 'api_key', "'$api_key'");
AirtimeIni::UpdateIniValue(AirtimeIni::CONF_FILE_RECORDER, 'api_key', "'$api_key'");
AirtimeIni::UpdateIniValue(AirtimeIni::CONF_FILE_MEDIAMONITOR, 'api_key', "'$api_key'");
}
public static function ReadPythonConfig($p_filename)
{
$values = array();
$lines = file($p_filename);
$n=count($lines);
for ($i=0; $i<$n; $i++) {
if (strlen($lines[$i]) && !in_array(substr($lines[$i], 0, 1), array('#', PHP_EOL))){
$info = explode("=", $lines[$i]);
$values[trim($info[0])] = trim($info[1]);
}
}
return $values;
}
public static function MergeConfigFiles($configFiles, $suffix) {
foreach ($configFiles as $conf) {
if (file_exists("$conf$suffix.bak")) {
if($conf === CONF_FILE_AIRTIME) {
// Parse with sections
$newSettings = parse_ini_file($conf, true);
$oldSettings = parse_ini_file("$conf$suffix.bak", true);
}
else {
$newSettings = AirtimeIni::ReadPythonConfig($conf);
$oldSettings = AirtimeIni::ReadPythonConfig("$conf$suffix.bak");
}
$settings = array_keys($newSettings);
foreach($settings as $section) {
if(isset($oldSettings[$section])) {
if(is_array($oldSettings[$section])) {
$sectionKeys = array_keys($newSettings[$section]);
foreach($sectionKeys as $sectionKey) {
if(isset($oldSettings[$section][$sectionKey])) {
AirtimeIni::UpdateIniValue($conf, $sectionKey, $oldSettings[$section][$sectionKey]);
}
}
}
else {
AirtimeIni::UpdateIniValue($conf, $section, $oldSettings[$section]);
}
}
}
}
}
}
}