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Eric Schultz
2015-10-24 10:17:28 -07:00
commit 30ca111094
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<?PHP
/* Copyright 2015, Lime Technology
* Copyright 2015, Bergware International.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2,
* as published by the Free Software Foundation.
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*/
?>
<?
/* UPDATE.PHP is used to update selected name=value variables in a configuration file.
* Note that calling this function will write the configuration file on the flash.
* The $_POST variable contains a list of key/value parameters to be updated in the file.
* There are a number of special parameters prefixed with a hash '#' character:
*
* #file : the pathname of the file to be updated. It does not need to previously exist.
* If pathname is relative (no leading '/'), the configuration file will placed
* placed under '/boot/config/plugins'.
* This parameter may be omitted to perform a command execution only (see #command).
* #section : if present, then the ini file consists of a set of named sections, and all of the
* configuration parameters apply to this one particular section.
* if omitted, then it's just a flat ini file without sections.
* #default : if present, then the default values will be restored instead.
* #include : specifies name of an include file to read and execute in before saving the file contents
* #cleanup : if present then parameters with empty strings are omitted from being written to the file
* #command : a shell command to execute after updating the configuration file
* #arg : an array of arguments for the shell command
*/
function write_log($string) {
if (empty($string)) return;
$string = str_replace("\n", "<br>", $string);
$string = str_replace('"', "\\\"", trim($string));
echo "<script>addLog(\"{$string}\");</script>";
@flush();
}
// unRAID update control
readfile('update.htm');
$docroot = $_SERVER['DOCUMENT_ROOT'];
if (isset($_POST['#file'])) {
$file = $_POST['#file'];
// prepend with boot (flash) if path is relative
if ($file[0]!='/') $file = "/boot/config/plugins/$file";
$section = isset($_POST['#section']) ? $_POST['#section'] : false;
$cleanup = isset($_POST['#cleanup']);
$default = isset($_POST['#default']) ? @parse_ini_file("$docroot/plugins/".basename(dirname($file))."/default.cfg", $section) : array();
$keys = @parse_ini_file($file, $section);
// the 'save' switch can be reset by the include file to disallow settings saving
$save = true;
if (isset($_POST['#include'])) {
$include = realpath($docroot.'/'.$_POST['#include']);
if (strpos($include, $docroot) === 0) include $include; else {
syslog(LOG_INFO, "Include file not allowed: $include. Settings not saved!");
$save = false;
}
}
if ($save) {
$text = "";
if ($section) {
foreach ($_POST as $key => $value) if ($key[0]!='#') $keys[$section][$key] = isset($default[$section][$key]) ? $default[$section][$key] : $value;
foreach ($keys as $section => $block) {
$text .= "[$section]\n";
foreach ($block as $key => $value) if (strlen($value) || !$cleanup) $text .= "$key=\"$value\"\n";
}
} else {
foreach ($_POST as $key => $value) if ($key[0]!='#') $keys[$key] = isset($default[$key]) ? $default[$key] : $value;
foreach ($keys as $key => $value) if (strlen($value) || !$cleanup) $text .= "$key=\"$value\"\n";
}
@mkdir(dirname($file));
file_put_contents($file, $text);
}
}
if (isset($_POST['#command'])) {
if (isset($_POST['#env'])) {
foreach ($_POST['#env'] as $env) putenv($env);
}
$command = $_POST['#command'];
if (strpos($command, $docroot) !== 0)
$command = "$docroot/$command";
$command = realpath($command);
if ($command === false)
syslog(LOG_INFO, "Invalid #command: {$_POST['#command']}");
else {
$command = escapeshellcmd($command);
if (isset($_POST['#arg'])) {
$args = $_POST['#arg'];
ksort($args);
$command .= " ".implode(" ", array_map("escapeshellarg", $args));
}
syslog(LOG_INFO, $command);
$proc = popen($command, 'r');
while (!feof($proc)) {
write_log(fgets($proc));
}
}
}
?>