All source listed below is under MIT license if no LICENSE file stating different is available.

fusedav

WebDAV filesystem client for Linux using FUSE3. Mounts remote WebDAV servers as local directories.

Architecture

+------------------+     +----------------+     +------------------+
|   Local Apps     |     |   FUSE Layer   |     |   WebDAV Server  |
|  (ls, cp, vim)   | --> |   (libfuse3)   | --> |   (Nextcloud,    |
|                  |     |                |     |    Apache, etc)  |
+------------------+     +----------------+     +------------------+
                               |
                         +-----+-----+
                         |           |
                    +--------+  +---------+
                    | Cache  |  | libcurl |
                    +--------+  +---------+

Features

RFC 4918 WebDAV protocol support
FUSE3 filesystem interface
Metadata and directory caching with configurable TTL
HTTP Basic authentication
HTTPS with certificate verification
Range requests for partial file reads
Thread-safe operations

Dependencies

libfuse3 (FUSE filesystem library)
libcurl (HTTP client with HTTPS support)
libxml2 (XML parsing for WebDAV responses)
pthread (POSIX threads)

Installation

Debian/Ubuntu:

sudo apt install libfuse3-dev libcurl4-openssl-dev libxml2-dev build-essential pkg-config

Fedora/RHEL:

sudo dnf install fuse3-devel libcurl-devel libxml2-devel gcc make pkg-config

Arch Linux:

sudo pacman -S fuse3 curl libxml2 base-devel pkg-config

Build

make

Usage

./fusedav --url https://example.com/dav/ --mount-point /mnt/webdav

Options

Option	Description
`-u, --url URL`	WebDAV server URL (required)
`-m, --mount-point PATH`	Local mount point directory (required)
`-U, --username USER`	HTTP Basic auth username
`-p, --password PASS`	HTTP Basic auth password
`-c, --cache-ttl MS`	Cache TTL in milliseconds (default: 30000)
`-t, --timeout SEC`	Request timeout in seconds (default: 10)
`-f, --foreground`	Run in foreground
`-d, --debug`	Enable debug output
`-h, --help`	Show help

Examples

Mount with authentication:

./fusedav --url https://cloud.example.com/remote.php/dav/files/user/ \
          --username user \
          --password secret \
          --mount-point /mnt/cloud

Mount with custom cache settings:

./fusedav --url https://webdav.example.com/ \
          --mount-point /mnt/dav \
          --cache-ttl 60000 \
          --timeout 30

Debug mode:

./fusedav --url https://example.com/dav/ \
          --mount-point /mnt/dav \
          --debug

Unmounting

fusermount -u /mnt/webdav

Or if mounted as root:

sudo umount /mnt/webdav

Limitations

No WebDAV Class 2 locking (concurrent writes may conflict)
No symlink or extended attribute support
Authentication credentials visible in process list
Sequential write assumption (random writes fetch entire file first)

Security Notes

Credentials passed via command line are visible in ps output
Consider using environment variables for sensitive data
SSL certificate verification is enabled by default
Input paths are validated to prevent directory traversal

Error Codes

HTTP Status	POSIX Error
404 Not Found	ENOENT
403 Forbidden	EACCES
401 Unauthorized	EACCES
405 Method Not Allowed	ENOTSUP
409 Conflict	EEXIST
507 Insufficient Storage	ENOSPC
5xx Server Error	EIO

License

MIT

build
include
src
webdav
fusedav
Makefile
README.md