ProFTPD-MySQL

ProFTPD Base Image including MySQL database authentication support.

DockerHub

This is available on DockerHub under the cyberduck/proftpd-mysql image name.

Usage

Example of running the image for one single standard FTP user using docker-compose:

version: '2'
services:
    ftp:
        image: cyberduck/proftpd-mysql
        environment:
            FTP_USERNAME: ftp_user_name
            FTP_PASSWORD: ftp_user_password
        volumes:
            - /path/to/ftp/folder:/home/ftp_user_name
        networks:
            - some_network_name
        ports:
            - "21:21"
            - "20:20"
            - "60000-60100:60000-60100"

Example of running the image for a MySQL database authentication using docker-compose:

version: '2'
services:
    ftp:
        image: cyberduck/proftpd-mysql
        environment:
            MYSQL_HOST: mysql_host_address
            MYSQL_DATABASE: mysql_database_name
            MYSQL_USER: mysql_username
            MYSQL_PASSWORD: mysql_password
            PROFTPD_USER: proftpd
            WEB_GROUP: www-data
        volumes:
            - /path/to/ftp/folder:/path/to/ftp/folder
        networks:
            - some_network_name
        ports:
            - "21:21"
            - "20:20"
            - "60000-60100:60000-60100"

MySQL Tables to generate

CREATE TABLE IF NOT EXISTS `ftp_groups` (
    `group_name` varchar(16) COLLATE utf8_general_ci NOT NULL,
    `gid` smallint(6) NOT NULL DEFAULT '5500',
    `members` varchar(16) COLLATE utf8_general_ci NOT NULL,
    KEY `group_name` (`group_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;

CREATE TABLE IF NOT EXISTS `ftp_users` (
    `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
    `user_name` varchar(32) COLLATE utf8_general_ci NOT NULL DEFAULT '',
    `password` varchar(32) COLLATE utf8_general_ci NOT NULL DEFAULT '',
    `uid` smallint(6) NOT NULL DEFAULT '5500',
    `gid` smallint(6) NOT NULL DEFAULT '5500',
    `home_directory` varchar(255) COLLATE utf8_general_ci NOT NULL DEFAULT '',
    `shell` varchar(16) COLLATE utf8_general_ci NOT NULL DEFAULT '/sbin/nologin',
    `count` int(11) NOT NULL DEFAULT '0',
    `accessed_at` timestamp NULL,
    `modified_at` timestamp NULL,
    PRIMARY KEY (`id`),
    UNIQUE KEY `userid` (`user_name`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;

Password generation

This image supports both OpenSSL and Crypt for password encryption.

Crypt is the one used when the MySQL function PASSWORD() is used.

To generate a password for OpenSSL please use the following:

echo -n "your_password" | openssl dgst -binary -md5 | openssl enc -base64

User and Group customization

If you would like to change the user and group the ProFTPD service/server is running as, you can use the following environment variables :

• PROFTPD_USER (default is set to nobody)
• WEB_GROUP (default is set to nobody)

Test it

You can use your favourite FTP client (such as FileZilla) to connect to the server with the sample user you added before.

You can also run ftp localhost from your macOS host machine for example.

Troubleshooting

You can view the log files of ProFTPD itself:

tail -f /var/log/proftpd/proftpd.log

And the SQL part of ProFTPD:

tail -f /var/log/proftpd/sql.log