710 lines
16 KiB
PHP
710 lines
16 KiB
PHP
<?php
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$sudo_cmd = false;
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function getUser ()
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{
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include 'userlist.php';
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if ( isset ( $_COOKIE['username'] ) && isset ( $_COOKIE['auth'] ))
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{
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if ( !( $xml = new SimpleXMLElement ( $xmlcontent )))
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{
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return "Unable to open the users XML file\n";
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}
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for ( $i = 0; $i < count ( $xml->user ); $i++ )
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{
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if ( !strcasecmp ( $xml->user[$i]['name'], $_COOKIE['username'] ))
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{
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$auth = md5 ( $xml->user[$i]['name'] . $xml->user[$i]['pass'] );
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if ( !strcasecmp ( $auth, $_COOKIE['auth'] ))
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{
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return $xml->user[$i]['name'];
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} else {
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return "guest";
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}
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}
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}
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return "guest";
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}
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return "guest";
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}
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function getHome ()
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{
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include 'userlist.php';
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if ( isset ( $_COOKIE['username'] ) && isset ( $_COOKIE['auth'] ))
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{
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if ( !( $xml = new SimpleXMLElement ( $xmlcontent )))
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{
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return "Unable to open the users XML file\n";
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}
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for ( $i = 0; $i < count ( $xml->user ); $i++ )
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{
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if ( !strcasecmp ( $xml->user[$i]['name'], $_COOKIE['username'] ))
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{
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$auth = md5 ( $xml->user[$i]['name'] . $xml->user[$i]['pass'] );
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if ( !strcasecmp ( $auth, $_COOKIE['auth'] ))
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{
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return $xml->user[$i]['home'];
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} else {
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return '/';
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}
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}
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}
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return '/';
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}
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return '/';
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}
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function getPerms ( $resource )
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{
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include "../../system/files_json.php";
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if ( !$files_json || strlen ( $files_json ) == 0 )
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{
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return '{ "message": "Empty JSON file container" }';
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}
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$user = getUser();
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$resource = str_replace ( '"', '\"', $resource );
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if ( $user == 'root' || $GLOBALS['sudo_cmd'] )
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{
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return '{ "resource" : "'.$resource.'", "read" : true, "write" : true }'."\n";
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}
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if ( preg_match ( '@/[^/]+/+$@', $resource ))
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{
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$resource = preg_replace ( '@/+$@', '', $resource );
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}
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$json = json_decode ( $files_json, true );
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$dir = $resource;
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$response = "{ \"resource\": \"$dir\"\n";
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$read_perm_found = false; // Have we found information about the read permissions of this resource?
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$write_perm_found = false; // Have we found information about the write permissions of this resource?
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$res_found = false; // Have we found the resource?
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$can_read = false;
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$can_write = false;
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if ( !$json || count ( $json ) == 0 )
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{
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return '{ "message": "Empty JSON file" }';
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}
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do
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{
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for ( $i=0; $i < count ( $json ); $i++ )
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{
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if ( !strcmp ( $json[$i]['path'], $dir ))
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{
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$res_found = true;
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if ( !$read_perm_found )
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{
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if ( isset ( $json[$i]['can_read'] ))
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{
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$read_perm_found = true;
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$read = $json[$i]['can_read'];
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if ( preg_match ( '/[\s,]*'.$user.'[\s,]*/', $read ))
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{
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$response .= ", \"read\": true\n";
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$can_read = true;
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} else if ( preg_match_all ( "/[\s,]?@([^\s,]+)[\s,]?/", $read, $matches )) {
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for ( $j=1; $j < count ( $matches ); $j++ )
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{
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if ( !strcasecmp ( $matches[$j][0], "all" ))
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{
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$response .= ", \"read\": true\n";
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$can_read = true;
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} else if ( !strcasecmp ( $matches[$j], "registered" ) && $user != 'guest' ) {
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$response .= ", \"read\": true\n";
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$can_read = true;
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} else {
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if ( isset ( $json['groups'] ))
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{
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for ( $k=0; $k < count ( $json['groups'] ); $k++ )
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{
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if ( $json['groups'][$k]['name'] == $matches[$k] )
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{
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if ( isset ( $json['groups'][$k]['users'] ))
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{
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if ( preg_match ( '/[\s,]*'.$user.'[\s,]*/', $json['groups'][$k]['users'] ))
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{
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$can_read = true;
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}
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}
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break;
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}
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}
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}
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}
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}
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}
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if ( !$can_read )
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{
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$response .= ", \"read\": false\n";
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}
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}
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}
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if ( !$write_perm_found )
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{
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if ( isset ( $json[$i]['can_write'] ))
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{
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$write_perm_found = true;
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$write = $json[$i]['can_write'];
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if ( preg_match ( '/[\s,]*'.$user.'[\s,]*/', $write ))
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{
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$response .= ", \"write\": true\n";
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$can_write = true;
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} else if ( preg_match_all ( "/[\s,'\"]?@([^\s,'\"]+)[\s,'\"]/", $write, $matches )) {
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for ( $j=1; $j < count ( $matches ); $j++ )
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{
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if ( !strcasecmp ( $matches[$j], "all" ))
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{
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$response .= ", \"write\": true\n";
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$can_write = true;
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} else if ( !strcasecmp ( $matches[$j], "registered" ) && $user != 'guest' ) {
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$response .= ", \"write\": true\n";
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$can_write = true;
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} else {
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if ( isset ( $json['groups'] ))
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{
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for ( $k=0; $k < count ( $json['groups'] ); $k++ )
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{
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if ( $json['groups'][$k]['name'] == $matches[$k] )
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{
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if ( isset ( $json['groups'][$k]['users'] ))
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{
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if ( preg_match ( '/[\s,]*'.$user.'[\s,]*/', $json['groups'][$k]['users'] ))
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{
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$can_write = true;
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}
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}
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break;
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}
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}
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}
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}
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}
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}
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if ( !$can_write )
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{
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$response .= ", \"write\": false\n";
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}
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}
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}
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}
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}
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if ( !$res_found )
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{
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return '{ "message": "Resource not found" }';
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}
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if ( $read_perm_found && $write_perm_found )
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{
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break;
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}
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if ( preg_match ( '@/[^/]+/@', $dir ))
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{
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$dir = preg_replace ( '@/[^/]+$@', '', $dir );
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} else if ( preg_match ( '@^/[^/]+$@', $dir )) {
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$dir = '/';
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} else if ( $dir == '/' ) {
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$dir = '';
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}
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} while ( strlen ( $dir ) > 0 );
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$response .= "}\n";
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return $response;
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}
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function __json_encode( $data ) {
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if ( is_array ($data) || is_object ($data) ) {
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$islist = is_array ($data) && ( empty ($data) || array_keys ($data) === range (0,count($data)-1) );
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if ( $islist ) {
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$json = '['."\n" . implode(', ', array_map('__json_encode', $data) ) . ']'."\n";
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} else {
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$items = Array();
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foreach ( $data as $key => $value ) {
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$items[] = __json_encode("$key") . ': ' . __json_encode($value);
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}
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$json = '{' . implode(', ', $items) . '}'."\n";
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}
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} elseif ( is_string ( $data )) {
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# Escape non-printable or Non-ASCII characters.
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# I also put the \\ character first, as suggested in comments on the 'addclashes' page.
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#$string = '"' . addcslashes($data, "\\\"\n\r\t/" . chr(8) . chr(12)) . '"';
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$string = '"' . $data . '"';
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$json = '';
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$len = strlen ($string);
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# Convert UTF-8 to Hexadecimal Codepoints.
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for ( $i = 0; $i < $len; $i++ ) {
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$char = $string[$i];
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$c1 = ord($char);
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# Single byte;
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if( $c1 <128 ) {
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$json .= ($c1 > 31) ? $char : sprintf("\\u%04x", $c1);
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continue;
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}
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# Double byte
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$c2 = ord($string[++$i]);
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if ( ($c1 & 32) === 0 ) {
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$json .= sprintf("\\u%04x", ($c1 - 192) * 64 + $c2 - 128);
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continue;
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}
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# Triple
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$c3 = ord($string[++$i]);
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if( ($c1 & 16) === 0 ) {
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$json .= sprintf("\\u%04x", (($c1 - 224) <<12) + (($c2 - 128) << 6) + ($c3 - 128));
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continue;
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}
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# Quadruple
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$c4 = ord($string[++$i]);
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if( ($c1 & 8 ) === 0 ) {
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$u = (($c1 & 15) << 2) + (($c2>>4) & 3) - 1;
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$w1 = (54<<10) + ($u<<6) + (($c2 & 15) << 2) + (($c3>>4) & 3);
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$w2 = (55<<10) + (($c3 & 15)<<6) + ($c4-128);
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$json .= sprintf("\\u%04x\\u%04x", $w1, $w2);
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}
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}
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} else {
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# int, floats, bools, null
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$json = strtolower(var_export( $data, true ));
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}
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return $json;
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}
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function set_content ( $file, $content )
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{
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$perms = json_decode ( getPerms ( $file ), true );
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$can_write = true;
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if ( !$perms['write'] )
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{
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$can_write = false;
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if ( $perms['message'] )
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{
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if ( !strcasecmp ( $perms['message'], "Resource not found" ))
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{
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$parent = preg_replace ( "@/[^/]+$@", '', $file );
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$perms = json_decode ( getPerms ( $parent ), true );
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if ( !$perms['write'] )
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{
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if ( $perms['message'] )
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{
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if ( !strcasecmp ( $perms['message'], "Resource not found" ))
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{
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return "Cannot save the file: Parent directory not found";
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} else {
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return $perms['message'];
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}
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} else {
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return "Cannot write to the file: Permission denied";
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}
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} else {
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$can_write = true;
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}
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} else {
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return $perms['message'];
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}
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} else {
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return "Cannot write to the file: Permission denied";
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}
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}
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$resp = __touch ( $file, null );
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include "../../system/files_json.php";
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if ( !$files_json || strlen ( $files_json ) == 0 )
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{
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return 'Error: Empty JSON file container';
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}
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$json = json_decode ( $files_json, true );
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if ( !$json )
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{
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return 'Error: Empty JSON file container';
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}
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for ( $i=0; $i < count ( $json ); $i++ )
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{
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$path = $json[$i]['path'];
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if ( !$path || strlen ( $path ) == 0 )
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{
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continue;
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}
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if ( $path == $file )
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{
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$content = str_replace ( '<', '<', $content );
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$content = str_replace ( '>', '>', $content );
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$content = str_replace ( "\'", "'", $content );
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$content = str_replace ( '"', "'", $content );
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$content = str_replace ( '\\', '', $content );
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$content = str_replace ( "\r", '', $content );
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$content = str_replace ( "\n", '<br/>', $content );
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$json[$i]['content'] = $content;
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if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
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{
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return "Unable to write on directories file\n";
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}
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fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
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fclose ( $fp );
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return "File successfully saved";
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}
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}
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}
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function __touch ( $file, $own_perms )
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{
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include "../../system/files_json.php";
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if ( !$files_json || strlen ( $files_json ) == 0 )
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{
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return 'touch: Error: Empty JSON file container';
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}
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if ( preg_match ( "@[^0-9a-zA-Z_\./\ ]@", $file ))
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{
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return "touch: Invalid character(s) for a file name out of range '[0-9a-zA-Z_./ ]'\n";
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}
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$has_perms = false;
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if ( $own_perms )
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{
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if ( is_array ( $own_perms ))
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{
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$has_perms = true;
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}
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}
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$user = getUser();
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$json = json_decode ( $files_json, true );
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$parent_dir = preg_replace ( '@/[^/]+$@', '', $file );
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$parent_dir_found = false;
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if ( preg_match ( "/^\s*$/", $parent_dir ))
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{
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$parent_dir = '/';
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}
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for ( $i=0; $i < count ( $json ); $i++ )
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{
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$path = $json[$i]['path'];
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if ( !$path || strlen ( $path ) == 0 )
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{
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continue;
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}
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if ( $path == $parent_dir )
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{
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$parent_dir_found = true;
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$perms = getPerms ( $parent_dir );
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$perms = json_decode ( $perms, true );
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if ( $perms['write'] == false )
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{
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$file = str_replace ( '<', '<', $file );
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$file = str_replace ( '>', '>', $file );
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return "touch: Could not touch $file: Permission denied\n";
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}
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}
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if ( $path == $file )
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{
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$file = str_replace ( '<', '<', $file );
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$file = str_replace ( '>', '>', $file );
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return "touch: Could not touch $file: The file already exists\n";
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}
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}
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if ( !$parent_dir_found )
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{
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$file = str_replace ( '<', '<', $file );
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$file = str_replace ( '>', '>', $file );
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return "touch: Could not touch $file: Parent directory not found\n";
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}
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$newfile = array();
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$newfile['path'] = "$file";
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$newfile['type'] = 'file';
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$newfile['owner'] = ($has_perms) ? $own_perms['owner'] : "$user";
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$newfile['can_read'] = ($has_perms) ? $own_perms['can_read'] : '@all';
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$newfile['can_write'] = ($has_perms) ? $own_perms['can_write'] : "$user";
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$newfile['content'] = "";
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array_push ( $json, $newfile );
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if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
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{
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return "touch: Unable to write on directories file\n";
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}
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fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
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fclose ( $fp );
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return "";
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}
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function __rm ( $file )
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{
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include "../../system/files_json.php";
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if ( !$files_json || strlen ( $files_json ) == 0 )
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{
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return 'rm: Error: Empty JSON file container';
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}
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$user = getUser();
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$json = json_decode ( $files_json, true );
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$file_found = false;
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for ( $i=0; $i < count ( $json ) && !$file_found; $i++ )
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{
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$path = $json[$i]['path'];
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if ( !$path || strlen ( $path ) == 0 )
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{
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continue;
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}
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if ( $path == $file )
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{
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if ( $json[$i]['type'] != 'file' )
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{
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$file = str_replace ( '<', '<', $file );
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$file = str_replace ( '>', '>', $file );
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return "rm: Could not remove file $file: It is not a regular file\n";
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} else {
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$file_found = true;
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$perms = getPerms ( $path );
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$perms = json_decode ( $perms, true );
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if ( $perms['write'] == false )
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{
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$path = str_replace ( '<', '<', $path );
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$path = str_replace ( '>', '>', $path );
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return "rm: Could not remove file $path: Permission denied\n";
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} else {
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array_splice ( $json, $i, 1 );
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$i--;
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}
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}
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}
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}
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if ( !$file_found )
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{
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$file = str_replace ( '<', '<', $file );
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$file = str_replace ( '>', '>', $file );
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return "rm: Could not remove $file: File not found\n";
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}
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if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
|
|
{
|
|
return "rm: Unable to write on directories file\n";
|
|
}
|
|
|
|
fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
|
|
fclose ( $fp );
|
|
return "";
|
|
}
|
|
|
|
function __mkdir ( $dir, $own_perms )
|
|
{
|
|
include "../../system/files_json.php";
|
|
|
|
if ( !$files_json || strlen ( $files_json ) == 0 )
|
|
{
|
|
return 'mkdir: Error: Empty JSON file container';
|
|
}
|
|
|
|
if ( preg_match ( "@[^0-9a-zA-Z_\./\ ]@", $dir ))
|
|
{
|
|
return "mkdir: Invalid character(s) for a directory name out of range '[0-9a-zA-Z_./ ]'\n";
|
|
}
|
|
|
|
$has_perms = false;
|
|
|
|
if ( $own_perms )
|
|
{
|
|
if ( is_array ( $own_perms ))
|
|
{
|
|
$has_perms = true;
|
|
}
|
|
}
|
|
|
|
$user = getUser();
|
|
$json = json_decode ( $files_json, true );
|
|
$parent_dir = preg_replace ( '@/[^/]+$@', '', $dir );
|
|
$parent_dir_found = false;
|
|
|
|
if ( preg_match ( "/^\s*$/", $parent_dir ))
|
|
{
|
|
$parent_dir = '/';
|
|
}
|
|
|
|
for ( $i=0; $i < count ( $json ); $i++ )
|
|
{
|
|
$path = $json[$i]['path'];
|
|
|
|
if ( !$path || strlen ( $path ) == 0 )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if ( $path == $parent_dir )
|
|
{
|
|
$parent_dir_found = true;
|
|
$perms = getPerms ( $parent_dir );
|
|
$perms = json_decode ( $perms, true );
|
|
|
|
if ( $perms['write'] == false )
|
|
{
|
|
$dir = str_replace ( '<', '<', $dir );
|
|
$dir = str_replace ( '>', '>', $dir );
|
|
return "mkdir: Could not create directory $dir: Permission denied\n";
|
|
}
|
|
}
|
|
|
|
if ( $path == $dir )
|
|
{
|
|
$dir = str_replace ( '<', '<', $dir );
|
|
$dir = str_replace ( '>', '>', $dir );
|
|
return "mkdir: Could not create directory $dir: The file already exists\n";
|
|
}
|
|
}
|
|
|
|
if ( !$parent_dir_found )
|
|
{
|
|
$dir = str_replace ( '<', '<', $dir );
|
|
$dir = str_replace ( '>', '>', $dir );
|
|
return "mkdir: Could not create directory $dir: Parent directory not found\n";
|
|
}
|
|
|
|
$newdir = array();
|
|
$newdir['path'] = "$dir";
|
|
$newdir['type'] = 'directory';
|
|
$newdir['owner'] = ($has_perms) ? $own_perms['owner'] : "$user";
|
|
$newdir['can_read'] = ($has_perms) ? $own_perms['can_read'] : '@all';
|
|
$newdir['can_write'] = ($has_perms) ? $own_perms['can_write'] : "$user";
|
|
|
|
array_push ( $json, $newdir );
|
|
|
|
if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
|
|
{
|
|
return "mkdir: Unable to write on directories file\n";
|
|
}
|
|
|
|
fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
|
|
fclose ( $fp );
|
|
return "";
|
|
}
|
|
|
|
function __rmdir ( $dir )
|
|
{
|
|
include "../../system/files_json.php";
|
|
|
|
if ( !$files_json || strlen ( $files_json ) == 0 )
|
|
{
|
|
return 'rmdir: Error: Empty JSON file container';
|
|
}
|
|
|
|
$user = getUser();
|
|
$json = json_decode ( $files_json, true );
|
|
$dir_found = false;
|
|
|
|
for ( $i=0; $i < count ( $json ); $i++ )
|
|
{
|
|
$path = $json[$i]['path'];
|
|
|
|
if ( !$path || strlen ( $path ) == 0 )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if ( $path == $dir )
|
|
{
|
|
if ( $json[$i]['type'] != 'directory' )
|
|
{
|
|
$dir = str_replace ( '<', '<', $dir );
|
|
$dir = str_replace ( '>', '>', $dir );
|
|
return "rmdir: Could not remove directory $dir: It is not a directory\n";
|
|
}
|
|
}
|
|
|
|
if ( preg_match ( "@^".$dir."(/+.*)?@", $path ))
|
|
{
|
|
$dir_found = true;
|
|
$perms = getPerms ( $path );
|
|
$perms = json_decode ( $perms, true );
|
|
|
|
if ( $perms['write'] == false )
|
|
{
|
|
$path = str_replace ( '<', '<', $path );
|
|
$path = str_replace ( '>', '>', $path );
|
|
return "rmdir: Could not remove directory $path Permission denied\n";
|
|
} else {
|
|
array_splice ( $json, $i, 1 );
|
|
$i--;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( !$dir_found )
|
|
{
|
|
$dir = str_replace ( '<', '<', $dir );
|
|
$dir = str_replace ( '>', '>', $dir );
|
|
return "rmdir: Could not remove directory $dir: File not found\n";
|
|
}
|
|
|
|
if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
|
|
{
|
|
return "rmdir: Unable to write on directories file\n";
|
|
}
|
|
|
|
fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
|
|
fclose ( $fp );
|
|
return "";
|
|
}
|
|
|
|
?>
|