FTPでバックアップを毎日1週間分取っておくPHPスクリプト

クライアントのバックアップ作成です。lftpとzip/unzipコマンドが必要。
これを毎日まわしておけばOK.

#!/usr/bin/php
<?php
$cwd = dirname(__FILE__);
chdir($cwd);
$ini = dirname(__FILE__). '/site_backup.ini';
$ini_stat = substr(sprintf('%o', fileperms($ini)), -4);
if ($ini_stat !== "0600"){
    printf("ini file[%s] permission is not 0600.\n", 
           $ini);
    exit;
}

$site_info = parse_ini_file($ini, true);

$today = date('Ymd');
$log_dir = dirname(__FILE__)."/log/site_backup";

$descriptorspec = array(
    0 => array("pipe", "r"),
    1 => array("file", $log_dir. "/process.".$today.".log", "a"),
    2 => array("file", $log_dir. "/error.".$today.".log", "a"),
    );
    
foreach ($descriptorspec as $desc){
    if ($desc[0] == "file"){
        $dir = dirname($desc[1]);
        if (!is_dir($dir)){
            if (!mkdir($dir, 0755, true)){
                printf("could not create log dir [%s]\n", $dir);
                exit;
            }
        }
        if ($fp = fopen($desc[1], $desc[2])){
            fputs($fp, sprintf("[%s]\n", date('Y/m/d H:i:s')));
            fclose($fp);
        }
    }
}


foreach ($site_info as $host => $ftpinfo){
    if (!$host){
        continue;
    }

    $local_backup_path = sprintf("%s/site/%s/%s",
                                 dirname(__FILE__),
                                 $host,
                                 date('l'));

    if (!file_exists($local_backup_path) && !is_dir($local_backup_path)){
        echo "mkdir -p $local_backup_path\n";
        if (!mkdir($local_backup_path, 0755, true)){
            printf("backup path [%s] create failed.\n", 
                   $local_backup_path);
            continue;
        }
    }
    
                                 
    $ftpinfo['local_backup_path'] = $local_backup_path;
    $zip_file = $local_backup_path .".zip";
    chdir(dirname($zip_file));
    if (file_exists($zip_file)){
        system('unzip -q -o '. basename($zip_file));
        unlink($zip_file);
    }
    chdir($cwd);
    ftp_backup($descriptorspec, $host, $ftpinfo);
    chdir(dirname($zip_file));
    $zip_cmd = sprintf('zip -q -m -r %s %s', 
                       $zip_file, basename($local_backup_path));
//    var_dump($local_backup_path, $zip_cmd, dirname($zip_file)); 
    system($zip_cmd);
}

/**
 * @brief 
 * @param 
 * @return
 */
function ftp_backup($descriptorspec, $host, $ftpinfo)
{
    extract($ftpinfo);
    if (!$host || !$user || !$pass || !$host_document_root || !$local_backup_path){
        printf("[%s] params is not valid.\n", $host);
        return false;
    }
    
    if (!is_dir($local_backup_path) && !is_writable($local_backup_path)){
        printf("%s is not writable.\n", $local_backup_path);
        return false;
    }
    
    $process = proc_open('lftp', $descriptorspec, $pipes);

    if (is_resource($process)){
        fputs($pipes[0],  sprintf("open -u %s,%s %s\n",
                                  $user, $pass, $host));
        // fputs($pipes[0], "ls\n");
        $exclude_list = "";
        if (isset($ftpinfo['exclude'])){
            foreach (explode(",", $ftpinfo['exclude']) as $e){
                $exclude_list .= " -X ".$e;
            }
        }
        fputs($pipes[0], sprintf("mirror -n -p --delete --only-newer --verbose %s %s %s\n",
                                 $exclude_list, $host_document_root, $local_backup_path));

        foreach ($pipes as $p){
            fclose($p);
        }

        $return_value = proc_close($process);
        echo "command returned $return_value\n";
    }
}

クライアントの設定ファイルは同じディレクトリに
site_backup.ini
として下記のように作る。複数書ける。

このファイルはパーミション600じゃないと動かないようにした。気持ち。。。

[www.xxxx.co.jp]
user=admin
pass=somepass
host_document_root=htdocs
exclude=mp3/*,avi/*

[www.example.com]
user=ftpuser
pass=123344556
host_document_root=web