Fix: whiptail-TUI reagiert nicht auf Tastatureingaben bei curl | bash

sudo, aus einer nicht-interaktiven gepipten Shell heraus aufgerufen, gibt die
Terminal-Vordergrundgruppe nicht zuverlässig an den Kindprozess weiter.
setup.sh lief bisher komplett (inkl. aller whiptail-Dialoge) innerhalb von
sudo, wodurch das Menü zwar sichtbar war, aber keine Tasten mehr ankamen.

setup.sh fragt jetzt alle interaktiven Eingaben (Stage-Auswahl, Zielbenutzer,
Ollama-Pfad) zuerst als normaler Nutzer ab und eskaliert erst danach per
exec sudo, wobei die bereits getroffenen Entscheidungen als Flags/Env-Variablen
durchgereicht werden. install.sh eskaliert dadurch nicht mehr selbst.
Zusätzlich wird die fehlerhafte "-c /dev/tty"-Interaktivitätsprüfung
(prüfte nur Existenz der Gerätedatei, nicht ob ein Terminal verbunden ist)
durch has_tty() ersetzt.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017WMUd2fGsPCtTCVQkSS5TA

README.md

@@ -23,29 +23,31 @@ curl -fsSL https://gitea.creative-dragonslayer.de/Scripts/Setup/raw/branch/main/
 ### 2. Manuelles Klonen & Starten
 Alternativ kann das Repository manuell geklont und ausgeführt werden:
 ```bash
-git clone https://gitea.creative-dragonslayer.de/Scripts/Setup.git && cd Setup && sudo ./setup.sh
+git clone https://gitea.creative-dragonslayer.de/Scripts/Setup.git && cd Setup && ./setup.sh
 ```
 Oder direkt vollautomatisch alle Stages (`00` bis `10`) ausführen:
 ```bash
-git clone https://gitea.creative-dragonslayer.de/Scripts/Setup.git && cd Setup && sudo ./setup.sh --all
+git clone https://gitea.creative-dragonslayer.de/Scripts/Setup.git && cd Setup && ./setup.sh --all
 ```
 
+> `setup.sh` fragt zuerst alle nötigen Eingaben (Modulauswahl, Zielbenutzer, ...) direkt am Terminal ab und eskaliert erst danach selbstständig per `sudo`. Ein manuelles `sudo` davor ist nicht nötig, funktioniert aber ebenfalls.
+
 ### 3. Interaktiver TUI-Modus
 Starte das grafische Terminal-Menü (`whiptail`) zur flexiblen Auswahl einzelner Module:
 ```bash
-sudo ./setup.sh
+./setup.sh
 ```
 
 ### 4. Vollautomatischer CLI-Modus
 Führe alle Phasen (`00` bis `10`) ohne Interaktion aus:
 ```bash
-sudo ./setup.sh --all
+./setup.sh --all
 ```
 
 ### 5. Gezielte Modulauswahl
 Installiere nur bestimmte Phasen (z. B. nur Paketlisten und Schriften):
 ```bash
-sudo ./setup.sh --stages 04,05
+./setup.sh --stages 04,05
 ```
 
 ### 6. Simulationslauf (Dry-Run)

install.sh

@@ -110,25 +110,12 @@ main() {
 
     log_success "Repository cloned successfully. Starting setup orchestrator..."
 
-    # Check if dry-run flag is requested
+    # setup.sh itself elevates to root via sudo once it needs it - after all
-    local is_dry_run=0
+    # interactive TUI/prompts have already run as the current user. Escalating
-    for arg in "$@"; do
+    # here instead would wrap the whiptail dialogs in sudo, which (when sudo is
-        if [[ "$arg" == "-d" || "$arg" == "--dry-run" ]]; then
+    # invoked from this non-interactive piped shell) leaves them unable to
-            is_dry_run=1
+    # receive keystrokes. See setup.sh for details.
-            break
+    local -a setup_cmd=(./setup.sh "$@")
-        fi
-    done
-
-    # Prepare command to execute setup.sh
-    local -a setup_cmd=()
-    if [[ "$(id -u)" -ne 0 ]] && [[ "$is_dry_run" -eq 0 ]]; then
-        if ! command -v sudo >/dev/null 2>&1; then
-            log_error "sudo is required to run setup.sh. Please install sudo or run as root."
-            exit 1
-        fi
-        setup_cmd+=(sudo)
-    fi
-    setup_cmd+=(./setup.sh "$@")
 
     # Reconnect stdin/stdout to /dev/tty before executing setup.sh if piped
     # (e.g. curl ... | bash), otherwise the interactive TUI receives no keystrokes

lib/utils.sh

@@ -158,14 +158,14 @@ prompt_target_user() {
 
     local chosen=""
     local is_interactive=0
-    if [[ -t 0 || -c /dev/tty ]] && [[ "${DEBIAN_FRONTEND:-}" != "noninteractive" && "${CI:-}" != "1" && "${AUTO_CONFIRM:-}" != "1" ]]; then
+    if { [[ -t 0 ]] || has_tty; } && [[ "${DEBIAN_FRONTEND:-}" != "noninteractive" && "${CI:-}" != "1" && "${AUTO_CONFIRM:-}" != "1" ]]; then
         is_interactive=1
     fi
 
     if [[ "$is_interactive" -eq 1 ]]; then
         local tty_in="/dev/tty"
         local tty_out="/dev/tty"
-        if [[ ! -c /dev/tty ]]; then
+        if ! has_tty; then
             tty_in="/dev/stdin"
             tty_out="/dev/stderr"
         fi
@@ -243,14 +243,14 @@ prompt_ollama_models_path() {
     local default_path="${OLLAMA_MODELS_DEFAULT:-/mnt/Data/Software/ollama/models}"
     local chosen=""
     local is_interactive=0
-    if [[ -t 0 || -c /dev/tty ]] && [[ "${DEBIAN_FRONTEND:-}" != "noninteractive" && "${CI:-}" != "1" && "${AUTO_CONFIRM:-}" != "1" ]]; then
+    if { [[ -t 0 ]] || has_tty; } && [[ "${DEBIAN_FRONTEND:-}" != "noninteractive" && "${CI:-}" != "1" && "${AUTO_CONFIRM:-}" != "1" ]]; then
         is_interactive=1
     fi
 
     if [[ "$is_interactive" -eq 1 ]]; then
         local tty_in="/dev/tty"
         local tty_out="/dev/tty"
-        if [[ ! -c /dev/tty ]]; then
+        if ! has_tty; then
             tty_in="/dev/stdin"
             tty_out="/dev/stderr"
         fi

setup.sh

@@ -37,10 +37,14 @@ ensure_term
 # Show help text
 show_help() {
     cat <<EOF
-Usage: sudo ./setup.sh [OPTIONS]
+Usage: ./setup.sh [OPTIONS]
 
 Debian Unstable Setup & Desktop Customization Framework
 
+Note: setup.sh elevates itself via sudo once needed, after any interactive
+prompts have been answered. Run it as your normal desktop user - no need to
+prefix it with 'sudo' yourself (though doing so still works).
+
 Options:
   -a, --all               Run all setup stages sequentially (00 through 10)
   -s, --stages <list>     Comma-separated list of stages to run (e.g. --stages 01,02,04)
@@ -62,10 +66,10 @@ Available Stages:
   10: Hyprland Desktop (LinuxBeginnings Auto-Installer)
 
 Examples:
-  sudo ./setup.sh                        # Interactive TUI mode
+  ./setup.sh                        # Interactive TUI mode
-  sudo ./setup.sh --all                  # Full automated install
+  ./setup.sh --all                  # Full automated install
-  sudo ./setup.sh --stages 04,05         # Install only packages and fonts
+  ./setup.sh --stages 04,05         # Install only packages and fonts
-  sudo ./setup.sh --stages 01 --dry-run  # Dry-run stage 01
+  ./setup.sh --stages 01 --dry-run  # Dry-run stage 01
 EOF
 }
 
@@ -121,10 +125,9 @@ if [[ -n "$CLI_USER" ]]; then
     export TARGET_USER="$CLI_USER"
 fi
 
-# Ensure root privileges unless dry-run
+# NOTE: Root privileges are intentionally NOT required here. All interactive
-if [[ "$FLAG_DRY_RUN" -eq 0 ]]; then
+# prompts (whiptail TUI, target user, Ollama path) must run BEFORE escalating
-    require_root
+# to sudo - see the privilege escalation block below for why.
-fi
 
 # Determine stages to run
 SELECTED_STAGES=()
@@ -181,6 +184,45 @@ if [[ -z "${TARGET_USER:-}" ]]; then
     export TARGET_USER
 fi
 
+# Pre-resolve the Ollama models path here (while still unprivileged and
+# directly attached to the terminal) if stage 06 will run, so stage
+# 06-services.sh never has to prompt again after privilege escalation.
+if [[ "$FLAG_DRY_RUN" -eq 0 ]] && [[ -z "${OLLAMA_MODELS:-}" ]]; then
+    for st in "${SELECTED_STAGES[@]}"; do
+        if [[ "$st" == "06" ]]; then
+            OLLAMA_MODELS="$(prompt_ollama_models_path)"
+            export OLLAMA_MODELS
+            break
+        fi
+    done
+fi
+
+# Escalate to root via sudo now that every interactive prompt (whiptail TUI,
+# target user, Ollama path) has already been answered while directly attached
+# to the terminal. sudo run from a non-interactive shell (e.g. 'curl | bash')
+# does not reliably hand the controlling terminal's foreground process group
+# to the command it execs, which leaves whiptail/read unable to receive any
+# keystrokes. Running all interactive dialogs before this point, and passing
+# the already-resolved choices through as flags/env vars, avoids ever needing
+# terminal input again after the sudo boundary.
+if [[ "$FLAG_DRY_RUN" -eq 0 ]] && [[ "$(id -u)" -ne 0 ]]; then
+    if ! command_exists sudo; then
+        log_error "sudo is required to run setup.sh. Please install sudo or run as root."
+        exit 1
+    fi
+    log_info "Elevating privileges via sudo to continue installation..."
+    joined_stages="$(IFS=,; echo "${SELECTED_STAGES[*]}")"
+    sudo_env_args=("TARGET_USER=$TARGET_USER")
+    if [[ -n "${OLLAMA_MODELS:-}" ]]; then
+        sudo_env_args+=("OLLAMA_MODELS=$OLLAMA_MODELS")
+    fi
+    exec sudo "${sudo_env_args[@]}" bash "$SCRIPT_DIR/setup.sh" --stages "$joined_stages" --user "$TARGET_USER"
+fi
+
+if [[ "$FLAG_DRY_RUN" -eq 0 ]]; then
+    require_root
+fi
+
 # Map stage identifier to script file
 get_stage_script() {
     local stage_id="$1"