mirror of
https://github.com/holdmysocks/ps5-tailscale.git
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holdmysocks
ed67b35b52
The status page can now be protected with a password and edits the settings itself, so the config file no longer has to be changed by hand. - Password for everything on the status page that shows or changes something. The console's own browser is exempt. Connections to the page from the tailnet are served directly so they are not taken for local. - Settings form: name, ports, forwards, proxy, priority, update checks. Most take effect at once; the page says which need a restart. - Game streaming: several Sunshine hosts, each with its own port. - The HTTP proxy is off by default. - The page says when a newer release exists. - Uninstall removes the home screen icon. - Priority setting for streams that stutter under a demanding game. - After the console's network is reconfigured, Tailscale is asked to rebind. Seen working across a short stay in rest mode. - Favicon, and the device list can be collapsed.
87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
package main
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import (
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"bytes"
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"errors"
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"fmt"
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"net"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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// The home screen icon is installed by a small helper payload that the
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// launcher carries (see appicon/ and launcher/homeicon.c). The launcher also
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// leaves a copy of the helper in the data directory, so that Uninstall can
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// run it again to take the icon away: the system call for that lives in
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// libraries this process must not load.
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//
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// The helper installs or removes depending on one byte in it, after a marker
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// string; removing is a matter of flipping that byte before sending it to
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// the ELF loader.
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const (
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iconHelperFile = "icon-helper.elf"
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iconModeMarker = "TSICON-MODE="
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iconModeRemove = 'R'
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elfLoaderAddr = "127.0.0.1:9021"
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iconHelperTimeout = 20 * time.Second
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)
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// removeHomeIcon takes the Tailscale icon off the home screen.
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func removeHomeIcon() error {
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helper, err := os.ReadFile(filepath.Join(dataDir, iconHelperFile))
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if err != nil {
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return err
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}
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i := bytes.Index(helper, []byte(iconModeMarker))
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if i < 0 || i+len(iconModeMarker) >= len(helper) {
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return errors.New("the icon helper is not one this version understands")
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}
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helper[i+len(iconModeMarker)] = iconModeRemove
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c, err := net.DialTimeout("tcp", elfLoaderAddr, 3*time.Second)
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if err != nil {
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return fmt.Errorf("no ELF loader to run the icon helper: %w", err)
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}
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defer c.Close()
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c.SetDeadline(time.Now().Add(iconHelperTimeout))
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if _, err := c.Write(helper); err != nil {
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return err
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}
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// The helper prints "icon: removed" or what went wrong, and exits.
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var reply []byte
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buf := make([]byte, 512)
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for len(reply) < 4096 {
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n, err := c.Read(buf)
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reply = append(reply, buf[:n]...)
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if line := iconReplyLine(reply); line != "" {
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if strings.HasPrefix(line, "icon: removed") {
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return nil
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}
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return errors.New(line)
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}
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if err != nil {
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break
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}
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}
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return errors.New("no answer from the icon helper")
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}
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// iconReplyLine returns the helper's complete "icon: ..." line, if it has
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// arrived.
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func iconReplyLine(reply []byte) string {
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i := bytes.Index(reply, []byte("icon: "))
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if i < 0 {
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return ""
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}
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rest := reply[i:]
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j := bytes.IndexByte(rest, '\n')
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if j < 0 {
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return ""
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}
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return strings.TrimSpace(string(rest[:j]))
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}
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