82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
package app
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import (
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"errors"
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"path"
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"git.gensokyo.uk/security/fortify/acl"
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"git.gensokyo.uk/security/fortify/internal/fmsg"
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"git.gensokyo.uk/security/fortify/internal/linux"
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"git.gensokyo.uk/security/fortify/internal/system"
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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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func (seal *appSeal) shareDisplay(os linux.System) 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.bwrap.SetEnv[term] = t
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}
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// set up wayland
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if seal.et.Has(system.EWayland) {
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var wp string
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if wd, ok := os.LookupEnv(waylandDisplay); !ok {
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return fmsg.WrapError(ErrWayland,
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"WAYLAND_DISPLAY is not set")
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} else {
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wp = path.Join(seal.RuntimePath, wd)
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}
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w := path.Join(seal.sys.runtime, "wayland-0")
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seal.sys.bwrap.SetEnv[waylandDisplay] = w
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if seal.directWayland {
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// hardlink wayland socket
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wpi := path.Join(seal.shareLocal, "wayland")
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seal.sys.Link(wp, wpi)
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seal.sys.bwrap.Bind(wpi, w)
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// ensure Wayland socket ACL (e.g. `/run/user/%d/wayland-%d`)
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seal.sys.UpdatePermType(system.EWayland, wp, acl.Read, acl.Write, acl.Execute)
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} else {
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wc := path.Join(seal.SharePath, "wayland")
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wt := path.Join(wc, seal.id)
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seal.sys.Ensure(wc, 0711)
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appID := seal.fid
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if appID == "" {
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// use instance ID in case app id is not set
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appID = "moe.ophivana.fortify." + seal.id
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}
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seal.sys.Wayland(wt, wp, appID, seal.id)
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seal.sys.bwrap.Bind(wt, w)
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}
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}
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// set up X11
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if seal.et.Has(system.EX11) {
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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 fmsg.WrapError(ErrXDisplay,
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"DISPLAY is not set")
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} else {
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seal.sys.ChangeHosts("#" + seal.sys.user.us)
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seal.sys.bwrap.SetEnv[display] = d
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seal.sys.bwrap.Bind("/tmp/.X11-unix", "/tmp/.X11-unix")
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}
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}
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return nil
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}
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