rename to fortify and restructure

More sandbox features will be added and this will no longer track ego's features and behaviour.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

internal/util/simple.go

@@ -0,0 +1,39 @@
+package util
+
+import (
+	"io"
+	"os"
+	"os/exec"
+)
+
+func Which(file string) (string, bool) {
+	p, err := exec.LookPath(file)
+	return p, err == nil
+}
+
+func CopyFile(dst, src string) error {
+	srcD, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if srcD.Close() != nil {
+			// unreachable
+			panic("src file closed prematurely")
+		}
+	}()
+
+	dstD, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if dstD.Close() != nil {
+			// unreachable
+			panic("dst file closed prematurely")
+		}
+	}()
+
+	_, err = io.Copy(dstD, srcD)
+	return err
+}

internal/util/std.go

@@ -0,0 +1,75 @@
+package util
+
+import (
+	"errors"
+	"fmt"
+	"io/fs"
+	"os"
+	"path"
+
+	"git.ophivana.moe/cat/fortify/internal/state"
+	"git.ophivana.moe/cat/fortify/internal/system"
+)
+
+const (
+	systemdCheckPath = "/run/systemd/system"
+
+	home          = "HOME"
+	xdgConfigHome = "XDG_CONFIG_HOME"
+
+	PulseServer = "PULSE_SERVER"
+	PulseCookie = "PULSE_COOKIE"
+)
+
+// SdBooted implements https://www.freedesktop.org/software/systemd/man/sd_booted.html
+func SdBooted() bool {
+	_, err := os.Stat(systemdCheckPath)
+	if err != nil {
+		if system.V.Verbose {
+			if errors.Is(err, fs.ErrNotExist) {
+				fmt.Println("System not booted through systemd")
+			} else {
+				fmt.Println("Error accessing", systemdCheckPath+":", err.Error())
+			}
+		}
+		return false
+	}
+	return true
+}
+
+// DiscoverPulseCookie try various standard methods to discover the current user's PulseAudio authentication cookie
+func DiscoverPulseCookie() string {
+	if p, ok := os.LookupEnv(PulseCookie); ok {
+		return p
+	}
+
+	if p, ok := os.LookupEnv(home); ok {
+		p = path.Join(p, ".pulse-cookie")
+		if s, err := os.Stat(p); err != nil {
+			if !errors.Is(err, fs.ErrNotExist) {
+				state.Fatal("Error accessing PulseAudio cookie:", err)
+				// unreachable
+				return p
+			}
+		} else if !s.IsDir() {
+			return p
+		}
+	}
+
+	if p, ok := os.LookupEnv(xdgConfigHome); ok {
+		p = path.Join(p, "pulse", "cookie")
+		if s, err := os.Stat(p); err != nil {
+			if !errors.Is(err, fs.ErrNotExist) {
+				state.Fatal("Error accessing PulseAudio cookie:", err)
+				// unreachable
+				return p
+			}
+		} else if !s.IsDir() {
+			return p
+		}
+	}
+
+	state.Fatal(fmt.Sprintf("Cannot locate PulseAudio cookie (tried $%s, $%s/pulse/cookie, $%s/.pulse-cookie)",
+		PulseCookie, xdgConfigHome, home))
+	return ""
+}