fortify/internal/app/pulse.go

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package app
import (
"errors"
"fmt"
"git.ophivana.moe/cat/fortify/internal/final"
"io/fs"
"os"
"path"
"git.ophivana.moe/cat/fortify/internal/acl"
"git.ophivana.moe/cat/fortify/internal/state"
"git.ophivana.moe/cat/fortify/internal/util"
"git.ophivana.moe/cat/fortify/internal/verbose"
)
func (a *App) SharePulse() {
a.setEnablement(state.EnablePulse)
// ensure PulseAudio directory ACL (e.g. `/run/user/%d/pulse`)
pulse := path.Join(a.runtimePath, "pulse")
pulseS := path.Join(pulse, "native")
if s, err := os.Stat(pulse); err != nil {
if !errors.Is(err, fs.ErrNotExist) {
final.Fatal("Error accessing PulseAudio directory:", err)
}
final.Fatal(fmt.Sprintf("PulseAudio dir '%s' not found", pulse))
} else {
// add environment variable for new process
a.AppendEnv(util.PulseServer, "unix:"+pulseS)
if err = acl.UpdatePerm(pulse, a.UID(), acl.Execute); err != nil {
final.Fatal("Error preparing PulseAudio:", err)
} else {
final.RegisterRevertPath(pulse)
}
// ensure PulseAudio socket permission (e.g. `/run/user/%d/pulse/native`)
if s, err = os.Stat(pulseS); err != nil {
if errors.Is(err, fs.ErrNotExist) {
final.Fatal("PulseAudio directory found but socket does not exist")
}
final.Fatal("Error accessing PulseAudio socket:", err)
} else {
if m := s.Mode(); m&0o006 != 0o006 {
final.Fatal(fmt.Sprintf("Unexpected permissions on '%s':", pulseS), m)
}
}
// Publish current user's pulse-cookie for target user
pulseCookieSource := util.DiscoverPulseCookie()
pulseCookieFinal := path.Join(a.sharePath, "pulse-cookie")
a.AppendEnv(util.PulseCookie, pulseCookieFinal)
verbose.Printf("Publishing PulseAudio cookie '%s' to '%s'\n", pulseCookieSource, pulseCookieFinal)
if err = util.CopyFile(pulseCookieFinal, pulseCookieSource); err != nil {
final.Fatal("Error copying PulseAudio cookie:", err)
}
if err = acl.UpdatePerm(pulseCookieFinal, a.UID(), acl.Read); err != nil {
final.Fatal("Error publishing PulseAudio cookie:", err)
} else {
final.RegisterRevertPath(pulseCookieFinal)
}
verbose.Printf("PulseAudio dir '%s' configured\n", pulse)
}
}