only 2 PW

tools/upload_to_pi.sh

@@ -88,19 +88,47 @@ excludes=(
   --exclude='*.p12'
   --exclude='*.pfx'
 )
-ssh_cmd=(ssh -o StrictHostKeyChecking=ask "$target" "mkdir -p -- '$remote_dir/releases' && mkdir -- '$remote_dir/releases/$release'")
+# One SSH authentication for the entire upload. The socket is private and only
+# lives for this invocation; no persistent key or password is written.
+control_dir=
+control_path=/tmp/halloween-ssh-VORSCHAU/control
+master_started=false
+cleanup_connection() {
+  if $master_started; then
+    ssh -o BatchMode=yes -S "$control_path" -O exit "$target" >/dev/null 2>&1 || true
+  fi
+  if [[ -n $control_dir ]]; then
+    rm -f -- "$control_path"
+    rmdir -- "$control_dir" 2>/dev/null || true
+  fi
+}
+if $apply; then
+  control_dir=$(mktemp -d /tmp/halloween-ssh-XXXXXXXX)
+  chmod 700 "$control_dir"
+  control_path="$control_dir/control"
+  trap cleanup_connection EXIT
+  trap 'exit 130' INT
+  trap 'exit 143' TERM
+fi
+master_cmd=(ssh -M -N -f -o ControlPersist=no -o BatchMode=no
+  -o StrictHostKeyChecking=ask -o "ControlPath=$control_path" "$target")
+# If the shared connection is lost, refuse password fallback on later steps.
+ssh_options=(-o StrictHostKeyChecking=ask -o ControlMaster=no
+  -o "ControlPath=$control_path" -o BatchMode=yes)
+ssh_cmd=(ssh "${ssh_options[@]}" "$target" "mkdir -p -- '$remote_dir/releases' && mkdir -- '$remote_dir/releases/$release'")
 rsync_cmd=(
   rsync -a --delay-updates --human-readable --info=stats2
   "${excludes[@]}"
-  -e 'ssh -o StrictHostKeyChecking=ask'
+  -e "ssh -o StrictHostKeyChecking=ask -o ControlMaster=no -o ControlPath=$control_path -o BatchMode=yes"
   -- "$source_dir/" "$target:$remote_dir/releases/$release/"
 )
-service_cmd=(ssh -tt -o StrictHostKeyChecking=ask "$target" "bash '$remote_dir/releases/$release/tools/activate_pi_release.sh' '$remote_dir' '$release' '$bind_host'")
+service_cmd=(ssh -tt "${ssh_options[@]}" "$target" "bash '$remote_dir/releases/$release/tools/activate_pi_release.sh' '$remote_dir' '$release' '$bind_host'")
 
 printf 'Quelle: %s\nZiel: %s:%s/\n' "$source_dir" "$target" "$remote_dir"
 printf 'Ausgelassen: .git, .venv, data, preview, references, __pycache__, .env, Schlüsseldateien\n'
 if ! $apply; then
   printf '\nVorschau, noch keine Verbindung und keine Übertragung:\n'
+  printf '  %q' "${master_cmd[@]}"; printf '\n'
   printf '  %q' "${ssh_cmd[@]}"; printf '\n'
   printf '  %q' "${rsync_cmd[@]}"; printf '\n'
   printf '  %q' "${service_cmd[@]}"; printf '\n'
@@ -108,6 +136,9 @@ if ! $apply; then
   exit 0
 fi
 
+printf 'SSH-Verbindung einmal anmelden; danach folgt nur noch die sudo-Abfrage auf dem Pi.\n'
+"${master_cmd[@]}"
+master_started=true
 "${ssh_cmd[@]}"
 "${rsync_cmd[@]}"
 printf 'Übertragung abgeschlossen.\n'