Commit Graph

6 Commits (3e6306a78281bb36dcab9f6e480d1133108ec367)

Author SHA1 Message Date
Percy Wegmann 15c58cb77c tailfs: include whitespace in test share and filenames
Since TailFS allows spaces in folder and file names, test with spaces.

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
8 months ago
Percy Wegmann 6c160e6321 ipn,tailfs: tie TailFS share configuration to user profile
Previously, the configuration of which folders to share persisted across
profile changes. Now, it is tied to the user's profile.

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann 232a2d627c tailfs: only impersonate unprivileged user if able to sudo -u as that user
When serving TailFS shares, tailscaled executes another tailscaled to act as a
file server. It attempts to execute this child process as an unprivileged user
using sudo -u. This is important to avoid accessing files as root, which would
result in potential privilege escalation.

Previously, tailscaled assumed that it was running as someone who can sudo -u,
and would fail if it was unable to sudo -u.

With this commit, if tailscaled is unable to sudo -u as the requested user, and
tailscaled is not running as root, then tailscaled executes the the file server
process under the same identity that ran tailscaled, since this is already an
unprivileged identity.

In the unlikely event that tailscaled is running as root but is unable to
sudo -u, it will refuse to run the child file server process in order to avoid
privilege escalation.

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann 05acf76392 tailfs: fix race condition in tailfs_test
Ues a noop authenticator to avoid potential races in gowebdav's
built-in authenticator.

Fixes #11259

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann 50fb8b9123 tailfs: replace webdavfs with reverse proxies
Instead of modeling remote WebDAV servers as actual
webdav.FS instances, we now just proxy traffic to them.
This not only simplifies the code, but it also allows
WebDAV locking to work correctly by making sure locks are
handled by the servers that need to (i.e. the ones actually
serving the files).

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann abab0d4197 tailfs: clean up naming and package structure
- Restyles tailfs -> tailFS
- Defines interfaces for main TailFS types
- Moves implemenatation of TailFS into tailfsimpl package

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
10 months ago