Ophestra Umiker
4b7d616862
Exit cleanup state information is now stored in a dedicated struct and built up using methods of that struct. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
110 lines
3.1 KiB
Go
110 lines
3.1 KiB
Go
package app
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import (
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"errors"
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"fmt"
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"io/fs"
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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"
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"git.ophivana.moe/cat/fortify/internal/util"
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"git.ophivana.moe/cat/fortify/internal/verbose"
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)
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const (
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pulseServer = "PULSE_SERVER"
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pulseCookie = "PULSE_COOKIE"
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home = "HOME"
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xdgConfigHome = "XDG_CONFIG_HOME"
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)
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func (a *App) SharePulse() {
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a.setEnablement(internal.EnablePulse)
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// ensure PulseAudio directory ACL (e.g. `/run/user/%d/pulse`)
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pulse := path.Join(a.runtimePath, "pulse")
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pulseS := path.Join(pulse, "native")
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if s, err := os.Stat(pulse); err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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internal.Fatal("Error accessing PulseAudio directory:", err)
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}
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internal.Fatal(fmt.Sprintf("PulseAudio dir '%s' not found", pulse))
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} else {
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// add environment variable for new process
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a.AppendEnv(pulseServer, "unix:"+pulseS)
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if err = acl.UpdatePerm(pulse, a.UID(), acl.Execute); err != nil {
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internal.Fatal("Error preparing PulseAudio:", err)
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} else {
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a.exit.RegisterRevertPath(pulse)
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}
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// ensure PulseAudio socket permission (e.g. `/run/user/%d/pulse/native`)
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if s, err = os.Stat(pulseS); err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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internal.Fatal("PulseAudio directory found but socket does not exist")
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}
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internal.Fatal("Error accessing PulseAudio socket:", err)
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} else {
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if m := s.Mode(); m&0o006 != 0o006 {
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internal.Fatal(fmt.Sprintf("Unexpected permissions on '%s':", pulseS), m)
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}
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}
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// Publish current user's pulse-cookie for target user
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pulseCookieSource := discoverPulseCookie()
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pulseCookieFinal := path.Join(a.sharePath, "pulse-cookie")
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a.AppendEnv(pulseCookie, pulseCookieFinal)
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verbose.Printf("Publishing PulseAudio cookie '%s' to '%s'\n", pulseCookieSource, pulseCookieFinal)
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if err = util.CopyFile(pulseCookieFinal, pulseCookieSource); err != nil {
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internal.Fatal("Error copying PulseAudio cookie:", err)
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}
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if err = acl.UpdatePerm(pulseCookieFinal, a.UID(), acl.Read); err != nil {
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internal.Fatal("Error publishing PulseAudio cookie:", err)
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} else {
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a.exit.RegisterRevertPath(pulseCookieFinal)
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}
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verbose.Printf("PulseAudio dir '%s' configured\n", pulse)
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}
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}
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// discoverPulseCookie try various standard methods to discover the current user's PulseAudio authentication cookie
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func discoverPulseCookie() string {
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if p, ok := os.LookupEnv(pulseCookie); ok {
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return p
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}
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if p, ok := os.LookupEnv(home); ok {
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p = path.Join(p, ".pulse-cookie")
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if s, err := os.Stat(p); err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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internal.Fatal("Error accessing PulseAudio cookie:", err)
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// unreachable
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return p
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}
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} else if !s.IsDir() {
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return p
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}
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}
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if p, ok := os.LookupEnv(xdgConfigHome); ok {
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p = path.Join(p, "pulse", "cookie")
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if s, err := os.Stat(p); err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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internal.Fatal("Error accessing PulseAudio cookie:", err)
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// unreachable
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return p
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}
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} else if !s.IsDir() {
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return p
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}
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}
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internal.Fatal(fmt.Sprintf("Cannot locate PulseAudio cookie (tried $%s, $%s/pulse/cookie, $%s/.pulse-cookie)",
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pulseCookie, xdgConfigHome, home))
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return ""
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}
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