68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package app
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import (
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"errors"
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"os"
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"path"
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"git.ophivana.moe/cat/fortify/acl"
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"git.ophivana.moe/cat/fortify/internal/state"
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)
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const (
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term = "TERM"
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display = "DISPLAY"
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// https://manpages.debian.org/experimental/libwayland-doc/wl_display_connect.3.en.html
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waylandDisplay = "WAYLAND_DISPLAY"
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)
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var (
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ErrWayland = errors.New(waylandDisplay + " unset")
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ErrXDisplay = errors.New(display + " unset")
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)
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type ErrDisplayEnv BaseError
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func (seal *appSeal) shareDisplay() error {
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// pass $TERM to launcher
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if t, ok := os.LookupEnv(term); ok {
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seal.sys.setEnv(term, t)
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}
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// set up wayland
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if seal.et.Has(state.EnableWayland) {
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if wd, ok := os.LookupEnv(waylandDisplay); !ok {
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return (*ErrDisplayEnv)(wrapError(ErrWayland, "WAYLAND_DISPLAY is not set"))
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} else if seal.wlDone == nil {
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// hardlink wayland socket
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wp := path.Join(seal.RuntimePath, wd)
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wpi := path.Join(seal.shareLocal, "wayland")
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w := path.Join(seal.sys.runtime, "wayland-0")
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seal.sys.link(wp, wpi)
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seal.sys.setEnv(waylandDisplay, w)
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seal.sys.bind(wpi, w, true)
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// ensure Wayland socket ACL (e.g. `/run/user/%d/wayland-%d`)
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seal.sys.updatePermTag(state.EnableWayland, wp, acl.Read, acl.Write, acl.Execute)
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} else {
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// set wayland socket path (e.g. `/run/user/%d/wayland-%d`)
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seal.wl = path.Join(seal.RuntimePath, wd)
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}
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}
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// set up X11
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if seal.et.Has(state.EnableX) {
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// discover X11 and grant user permission via the `ChangeHosts` command
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if d, ok := os.LookupEnv(display); !ok {
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return (*ErrDisplayEnv)(wrapError(ErrXDisplay, "DISPLAY is not set"))
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} else {
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seal.sys.changeHosts(seal.sys.Username)
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seal.sys.setEnv(display, d)
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seal.sys.bind("/tmp/.X11-unix", "/tmp/.X11-unix", true)
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}
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}
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return nil
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}
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