153 lines
3.3 KiB
Go
153 lines
3.3 KiB
Go
package app
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import (
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"bytes"
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"encoding/base64"
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"encoding/gob"
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"fmt"
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"os"
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"strings"
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"syscall"
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"git.ophivana.moe/cat/fortify/internal/state"
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"git.ophivana.moe/cat/fortify/internal/system"
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"git.ophivana.moe/cat/fortify/internal/util"
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)
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const (
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sudoAskPass = "SUDO_ASKPASS"
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launcherPayload = "FORTIFY_LAUNCHER_PAYLOAD"
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)
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func (a *App) launcherPayloadEnv() string {
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r := &bytes.Buffer{}
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enc := base64.NewEncoder(base64.StdEncoding, r)
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if err := gob.NewEncoder(enc).Encode(a.command); err != nil {
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state.Fatal("Error encoding launcher payload:", err)
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}
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_ = enc.Close()
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return launcherPayload + "=" + r.String()
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}
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// Early hidden launcher path
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func Early(printVersion bool) {
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if printVersion {
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if r, ok := os.LookupEnv(launcherPayload); ok {
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dec := base64.NewDecoder(base64.StdEncoding, strings.NewReader(r))
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var argv []string
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if err := gob.NewDecoder(dec).Decode(&argv); err != nil {
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fmt.Println("Error decoding launcher payload:", err)
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os.Exit(1)
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}
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if err := os.Unsetenv(launcherPayload); err != nil {
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fmt.Println("Error unsetting launcher payload:", err)
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// not fatal, do not fail
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}
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var p string
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if len(argv) > 0 {
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if p, ok = util.Which(argv[0]); !ok {
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fmt.Printf("Did not find '%s' in PATH\n", argv[0])
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os.Exit(1)
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}
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} else {
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if p, ok = os.LookupEnv("SHELL"); !ok {
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fmt.Println("No command was specified and $SHELL was unset")
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os.Exit(1)
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}
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}
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if err := syscall.Exec(p, argv, os.Environ()); err != nil {
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fmt.Println("Error executing launcher payload:", err)
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os.Exit(1)
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}
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// unreachable
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os.Exit(1)
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return
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}
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}
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}
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func (a *App) launchBySudo() (args []string) {
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args = make([]string, 0, 4+len(a.env)+len(a.command))
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// -Hiu $USER
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args = append(args, "-Hiu", a.Username)
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// -A?
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if _, ok := os.LookupEnv(sudoAskPass); ok {
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if system.V.Verbose {
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fmt.Printf("%s set, adding askpass flag\n", sudoAskPass)
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}
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args = append(args, "-A")
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}
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// environ
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args = append(args, a.env...)
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// -- $@
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args = append(args, "--")
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args = append(args, a.command...)
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return
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}
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func (a *App) launchByMachineCtl(bare bool) (args []string) {
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args = make([]string, 0, 9+len(a.env))
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// shell --uid=$USER
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args = append(args, "shell", "--uid="+a.Username)
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// --quiet
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if !system.V.Verbose {
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args = append(args, "--quiet")
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}
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// environ
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envQ := make([]string, len(a.env)+1)
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for i, e := range a.env {
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envQ[i] = "-E" + e
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}
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envQ[len(a.env)] = "-E" + a.launcherPayloadEnv()
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args = append(args, envQ...)
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// -- .host
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args = append(args, "--", ".host")
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// /bin/sh -c
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if sh, ok := util.Which("sh"); !ok {
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state.Fatal("Did not find 'sh' in PATH")
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} else {
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args = append(args, sh, "-c")
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}
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if len(a.command) == 0 { // execute shell if command is not provided
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a.command = []string{"$SHELL"}
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}
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innerCommand := strings.Builder{}
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if !bare {
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innerCommand.WriteString("dbus-update-activation-environment --systemd")
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for _, e := range a.env {
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innerCommand.WriteString(" " + strings.SplitN(e, "=", 2)[0])
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}
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innerCommand.WriteString("; systemctl --user start xdg-desktop-portal-gtk; ")
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}
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if executable, err := os.Executable(); err != nil {
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state.Fatal("Error reading executable path:", err)
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} else {
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innerCommand.WriteString("exec " + executable + " -V")
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}
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args = append(args, innerCommand.String())
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return
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}
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