1 files changed, 67 insertions, 0 deletions
diff --git a/internal/app/launch.machinectl.go b/internal/app/launch.machinectl.go
new file mode 100644
index 00000000..21b9d40b
--- /dev/null
+++ b/internal/app/launch.machinectl.go
@@ -0,0 +1,67 @@
+package app
+
+import (
+	"os/exec"
+	"strings"
+
+	"git.ophivana.moe/cat/fortify/internal/state"
+	"git.ophivana.moe/cat/fortify/internal/verbose"
+)
+
+func (a *app) commandBuilderMachineCtl() (args []string) {
+	args = make([]string, 0, 9+len(a.seal.env))
+
+	// shell --uid=$USER
+	args = append(args, "shell", "--uid="+a.seal.sys.Username)
+
+	// --quiet
+	if !verbose.Get() {
+		args = append(args, "--quiet")
+	}
+
+	// environ
+	envQ := make([]string, len(a.seal.env)+1)
+	for i, e := range a.seal.env {
+		envQ[i] = "-E" + e
+	}
+	// add shim payload to environment for shim path
+	envQ[len(a.seal.env)] = "-E" + a.shimPayloadEnv()
+	args = append(args, envQ...)
+
+	// -- .host
+	args = append(args, "--", ".host")
+
+	// /bin/sh -c
+	if sh, err := exec.LookPath("sh"); err != nil {
+		// hardcode /bin/sh path since it exists more often than not
+		args = append(args, "/bin/sh", "-c")
+	} else {
+		args = append(args, sh, "-c")
+	}
+
+	// build inner command expression ran as target user
+	innerCommand := strings.Builder{}
+
+	// apply custom environment variables to activation environment
+	innerCommand.WriteString("dbus-update-activation-environment --systemd")
+	for _, e := range a.seal.env {
+		innerCommand.WriteString(" " + strings.SplitN(e, "=", 2)[0])
+	}
+	innerCommand.WriteString("; ")
+
+	// override message bus address if enabled
+	if a.seal.et.Has(state.EnableDBus) {
+		innerCommand.WriteString(dbusSessionBusAddress + "=" + "'" + "unix:path=" + a.seal.sys.dbusAddr[0][1] + "' ")
+		if a.seal.sys.dbusSystem {
+			innerCommand.WriteString(dbusSystemBusAddress + "=" + "'" + "unix:path=" + a.seal.sys.dbusAddr[1][1] + "' ")
+		}
+	}
+
+	// both license and version flags need to be set to activate shim path
+	innerCommand.WriteString("exec " + a.seal.sys.executable + " -V -license")
+
+	// append inner command
+	args = append(args, innerCommand.String())
+
+	return
+}