7 Commits (0cb86468cab1b74b10589e94568620d31a22c9a6)

Author	SHA1	Message	Date
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	e324a5660f	ipn: include full tailfs shares in ipn notifications ... This allows the Mac application to regain access to restricted folders after restarts. Updates tailscale/corp#16827 Signed-off-by: Percy Wegmann <percy@tailscale.com>	9 months ago
Percy Wegmann	80f1cb6227	tailfs: support storing bookmark data on shares ... This allows the sandboxed Mac application to store security- scoped URL bookmarks in order to maintain access to restricted folders across restarts. 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
Percy Wegmann	993acf4475	tailfs: initial implementation ... Add a WebDAV-based folder sharing mechanism that is exposed to local clients at 100.100.100.100:8080 and to remote peers via a new peerapi endpoint at /v0/tailfs. Add the ability to manage folder sharing via the new 'share' CLI sub-command. Updates tailscale/corp#16827 Signed-off-by: Percy Wegmann <percy@tailscale.com>	10 months ago