libunftp - The FTPS library

libunftp is a Rust crate that you can use to build your own FTPS server with. You can extend it with your own storage back-ends or authentication back-ends.

It runs on top of the Tokio asynchronous run-time and tries to make use of Async IO as much as possible.

Feature highlights

42 Supported FTP commands (see commands directory) and growing
Ability to implement own storage back-ends
Ability to implement own authentication back-ends
Ability to implement own SITE commands
Explicit FTPS (TLS)
Mutual TLS (Client certificates)
TLS session resumption
Prometheus integration (enabled by default, can be disabled)
Structured Logging
Proxy Protocol support (enabled by default, can be disabled)
Automatic session timeouts
Per user IP allow lists
Configurable cryptographic providers (ring or aws-lc-rs)

Known Storage back-ends

Crate	Description
unftp-sbe-fatfs	Provides read-only access to FAT filesystem images
unftp-sbe-fs	Stores files on the local filesystem
unftp-sbe-gcs	Stores files in Google Cloud Storage
unftp-sbe-iso	Provides FTP access to ISO 9660 files
unftp-sbe-opendal	Provides access to various storage services through Apache OpenDAL (supports S3, Azure Blob Storage, and more)
unftp-sbe-restrict	Wraps another storage back-end in order to restrict the FTP operations a user can do i.e. provide authorization
unftp-sbe-rooter	Wraps another storage back-end in order to root a user to a specific home directory
unftp-sbe-webdav	A WebDAV storage back-end providing translation between FTP & WebDAV

See the full list of storage back-ends on crates.io or the Contribution Guide and API Documentation if you want to create your own.

Known Authentication back-ends

Crate	Description
unftp-auth-jsonfile	Authenticates against JSON text
unftp-auth-pam	Authenticates via PAM
unftp-auth-rest	Consumes an HTTP API to authenticate

See the full list of authentication back-ends on crates.io or the Contribution Guide and API Documentation if you want to create your own.

Known SITE command extensions

Crate	Description
unftp-site-hash	Adds a `SITE HASH` command, supporting SHA-256, SHA-1, MD5 and CRC32 file hashing

See the full list of SITE command extensions on crates.io or the Contribution Guide and ServerBuilder::site_command if you want to create your own.

Additional resources

See the github page or the API Documentation for more details.