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