From ee7e8af9a0031ad3e2138ab116a7fb61191758c8 Mon Sep 17 00:00:00 2001
From: Ark74 <ark@switnet.org>
Date: Sun, 4 Jan 2026 15:55:39 -0600
Subject: [PATCH] [termux-setup] add initial base to replace shizuku with
 termux-api

---
 android/0_termux-setup_v2.sh | 435 +++++++++++++++++++++++++++++++++++
 1 file changed, 435 insertions(+)
 create mode 100644 android/0_termux-setup_v2.sh

diff --git a/android/0_termux-setup_v2.sh b/android/0_termux-setup_v2.sh
new file mode 100644
index 0000000..b01e6e2
--- /dev/null
+++ b/android/0_termux-setup_v2.sh
@@ -0,0 +1,435 @@
+#!/data/data/com.termux/files/usr/bin/bash
+set -euo pipefail
+
+# IIAB on Android - Termux bootstrap (standalone)
+#
+# Requirements:
+#  - Termux installed
+#  - Network connectivity
+#  - Shizuku + rish (Android 12/13 only) to raise Phantom Process Killer (PPK) limit
+#
+# Default behavior (idempotent):
+# - One-time Termux repo mirror selection (prompted once; no TTY checks)
+# - Acquire wakelock when possible (Termux:API)
+# - Prepare Termux baseline packages (noninteractive, avoids dpkg conffile prompts)
+# - Ensure proot-distro + Debian exists (install by default)
+# - Last step: On Android 12/13 only, re-apply PPK fix via rish (if available)
+# - Self-check summary at the end
+#
+# Flags:
+# - --ppk-only              Run only PPK fix + self-check
+# - --reset-debian          Reset (reinstall) Debian (clean environment), then proceed normally
+# - --cleanup-rish-export   After installing rish into PATH, delete ~/rish and ~/rish*.dex (off by default)
+
+RED="\033[31m"
+YEL="\033[33m"
+GRN="\033[32m"
+BLU="\033[34m"
+RST="\033[0m"
+BOLD="\033[1m"
+
+log()      { printf "${BLU}[iiab]${RST} %s\n" "$*"; }
+ok()       { printf "${GRN}[iiab]${RST} %s\n" "$*"; }
+warn()     { printf "${YEL}[iiab] WARNING:${RST} %s\n" "$*" >&2; }
+warn_red() { printf "${RED}${BOLD}[iiab] WARNING:${RST} %s\n" "$*" >&2; }
+
+have() { command -v "$1" >/dev/null 2>&1; }
+
+STATE_DIR="${HOME}/.iiab-android"
+mkdir -p "$STATE_DIR"
+
+PPK_ONLY=0
+RESET_DEBIAN=0
+CLEANUP_RISH_EXPORT=0
+
+for arg in "$@"; do
+  case "$arg" in
+    --ppk-only) PPK_ONLY=1 ;;
+    --reset-debian|--clean-debian) RESET_DEBIAN=1 ;;
+    --cleanup-rish-export) CLEANUP_RISH_EXPORT=1 ;;
+    -h|--help)
+      cat <<'EOF'
+Usage:
+  ./0_termux-setup.sh
+      Default run (idempotent): Termux baseline + Debian bootstrap + PPK fix (Android 12/13) + self-check
+
+  ./0_termux-setup.sh --ppk-only
+      Run ONLY the last step: PPK fix (Android 12/13) + self-check
+
+  ./0_termux-setup.sh --reset-debian
+      Reset (reinstall) Debian in proot-distro (clean environment), then proceed normally
+
+  ./0_termux-setup.sh --cleanup-rish-export
+      After installing rish into PATH, delete ~/rish and ~/rish*.dex (off by default)
+
+Notes:
+  - This script will NOT delete rish exports unless --cleanup-rish-export is used.
+  - PPK fix is re-applied to 256 on every run (Android 12/13) when possible.
+  - Repo selection is prompted once (skipped for --ppk-only).
+EOF
+      exit 0
+      ;;
+  esac
+done
+
+get_android_sdk()     { getprop ro.build.version.sdk 2>/dev/null || true; }
+get_android_release() { getprop ro.build.version.release 2>/dev/null || true; }
+
+ANDROID_SDK="$(get_android_sdk)"
+ANDROID_REL="$(get_android_release)"
+
+# Avoid dpkg conffile prompts (Termux layer)
+TERMUX_APT_OPTS=(
+  "-y"
+  "-o" "Dpkg::Options::=--force-confdef"
+  "-o" "Dpkg::Options::=--force-confold"
+)
+termux_apt() { apt-get "${TERMUX_APT_OPTS[@]}" "$@"; }
+
+# -------------------------
+# Wakelock (Termux:API)
+# -------------------------
+WAKELOCK_HELD=0
+
+acquire_wakelock() {
+  # This helps prevent the device from sleeping during long installs.
+  if have termux-wake-lock; then
+    termux-wake-lock || true
+    WAKELOCK_HELD=1
+    ok "Wakelock acquired (termux-wake-lock)."
+  else
+    warn "termux-wake-lock not available. (Install Termux:API: pkg install termux-api + Termux:API app.)"
+  fi
+}
+
+release_wakelock() {
+  if [[ "$WAKELOCK_HELD" -eq 1 ]] && have termux-wake-unlock; then
+    termux-wake-unlock || true
+    ok "Wakelock released (termux-wake-unlock)."
+  fi
+}
+
+trap 'release_wakelock' EXIT
+
+# -------------------------
+# Step 0: One-time repo selector (no TTY checks)
+# -------------------------
+step_termux_repo_select_once() {
+  local stamp="$STATE_DIR/stamp.termux_repo_selected"
+  if [[ -f "$stamp" ]]; then
+    return 0
+  fi
+
+  if ! have termux-change-repo; then
+    warn "termux-change-repo not found; skipping mirror selection."
+    return 0
+  fi
+
+  # When running via "curl | bash", stdin is not a TTY.
+  # Try to prompt via /dev/tty if available. If not, skip WITHOUT stamping.
+  if [[ -r /dev/tty ]]; then
+    printf "\n${YEL}[iiab] One-time setup:${RST} Select a nearby Termux repository mirror for faster downloads.\n" >&2
+
+    local ans="Y"
+    if ! read -r -p "[iiab] Launch termux-change-repo now? [Y/n]: " ans < /dev/tty; then
+      warn "No interactive TTY available; skipping mirror selection (run the script directly to be prompted)."
+      return 0
+    fi
+
+    ans="${ans:-Y}"
+    if [[ "$ans" =~ ^[Yy]$ ]]; then
+      termux-change-repo || true
+      ok "Mirror selection completed (or skipped inside the UI)."
+    else
+      warn "Mirror selection skipped by user."
+    fi
+
+    date > "$stamp"
+    return 0
+  fi
+
+  warn "No /dev/tty available; skipping mirror selection (run the script directly to be prompted)."
+  return 0
+}
+
+# -------------------------
+# Step 1: Termux baseline packages (idempotent)
+# -------------------------
+step_termux_base() {
+  local stamp="$STATE_DIR/stamp.termux_base"
+  if [[ -f "$stamp" ]]; then
+    ok "Termux baseline already prepared (stamp found)."
+    return 0
+  fi
+
+  log "Updating Termux packages (noninteractive) and installing baseline dependencies..."
+  export DEBIAN_FRONTEND=noninteractive
+
+  termux_apt update || true
+  termux_apt upgrade || true
+
+  termux_apt install \
+    curl \
+    ca-certificates \
+    coreutils \
+    grep \
+    sed \
+    openssh \
+    proot \
+    proot-distro || true
+
+  ok "Termux baseline ready."
+  date > "$stamp"
+}
+
+# -------------------------
+# Debian helpers (robust)
+# -------------------------
+debian_exists() {
+  have proot-distro || return 1
+  proot-distro login debian -- true >/dev/null 2>&1
+}
+
+ensure_proot_distro() {
+  if have proot-distro; then
+    return 0
+  fi
+  warn "proot-distro is not available. Attempting to install it..."
+  termux_apt install proot-distro || true
+  have proot-distro
+}
+
+proot_install_debian_safe() {
+  local out rc
+  set +e
+  out="$(proot-distro install debian 2>&1)"
+  rc=$?
+  set -e
+
+  if [[ $rc -eq 0 ]]; then
+    return 0
+  fi
+  if echo "$out" | grep -qi "already installed"; then
+    warn "Debian is already installed; continuing."
+    return 0
+  fi
+
+  printf "%s\n" "$out" >&2
+  return $rc
+}
+
+# -------------------------
+# Step 2: Ensure Debian exists (default), optionally reset it
+# -------------------------
+step_debian_bootstrap_default() {
+  if ! ensure_proot_distro; then
+    warn "Unable to ensure proot-distro. Skipping Debian bootstrap."
+    return 0
+  fi
+
+  if [[ "$RESET_DEBIAN" -eq 1 ]]; then
+    warn "Reset requested: reinstalling Debian (clean environment)..."
+    # Prefer reset (if available), fallback to remove+install
+    if proot-distro help 2>/dev/null | grep -qE '\breset\b'; then
+      proot-distro reset debian
+    else
+      if debian_exists; then proot-distro remove debian; fi
+      proot_install_debian_safe
+    fi
+  else
+    if debian_exists; then
+      ok "Debian already present in proot-distro. Not reinstalling."
+    else
+      log "Installing Debian (proot-distro install debian)..."
+      proot_install_debian_safe
+    fi
+  fi
+
+  log "Installing minimal tools inside Debian (noninteractive)..."
+  proot-distro login debian -- bash -lc '
+    set -e
+    export DEBIAN_FRONTEND=noninteractive
+    apt-get update -y
+    apt-get -y \
+      -o Dpkg::Options::=--force-confdef \
+      -o Dpkg::Options::=--force-confold \
+      install ca-certificates curl coreutils
+  ' || true
+
+  ok "Debian bootstrap complete."
+}
+
+# -------------------------
+# rish helpers
+# -------------------------
+android_major_12_to_13() {
+  case "${ANDROID_SDK:-}" in
+    31|32) echo "12" ;;  # Android 12 / 12L
+    33)    echo "13" ;;  # Android 13
+    *)     echo "" ;;
+  esac
+}
+
+rish_export_available_in_home() {
+  [[ -f "$HOME/rish" ]] && ls -1 "$HOME"/rish*.dex >/dev/null 2>&1
+}
+
+install_rish_to_path_if_available() {
+  if ! rish_export_available_in_home; then
+    return 1
+  fi
+
+  local dex PREFIX_BIN
+  dex="$(ls -1 "$HOME"/rish*.dex 2>/dev/null | head -n1 || true)"
+  PREFIX_BIN="/data/data/com.termux/files/usr/bin"
+
+  install -m 0755 "$HOME/rish" "$PREFIX_BIN/rish"
+  install -m 0644 "$dex" "$PREFIX_BIN/$(basename "$dex")"
+  # Typical adjustment required by rish
+  sed -i 's/PKG/com.termux/g' "$PREFIX_BIN/rish" || true
+
+  if [[ "$CLEANUP_RISH_EXPORT" -eq 1 ]]; then
+    warn "Cleanup requested: removing rish exports from HOME (~/rish, ~/rish*.dex)."
+    rm -f "$HOME/rish" "$HOME"/rish*.dex || true
+  fi
+  return 0
+}
+
+run_rish() {
+  local out
+  out="$(rish -c "$1" 2>&1)" || {
+    printf "%s\n" "$out"
+    return 1
+  }
+  printf "%s\n" "$out"
+  return 0
+}
+
+# -------------------------
+# LAST STEP: Android 12/13 PPK fix via rish
+# -------------------------
+step_ppk_fix_android_12_13() {
+  local major rel sdk
+  major="$(android_major_12_to_13)"
+  rel="${ANDROID_REL:-?}"
+  sdk="${ANDROID_SDK:-?}"
+
+  if [[ -z "$major" ]]; then
+    ok "Android release=$rel sdk=$sdk -> PPK fix not applicable (only Android 12/13)."
+    return 0
+  fi
+
+  log "Android $major (release=$rel sdk=$sdk) -> PPK fix target: max_phantom_processes=256"
+
+  if ! have rish; then
+    install_rish_to_path_if_available || true
+  fi
+
+  if ! have rish; then
+    warn_red "PPK fix could not be applied: rish is not available."
+    warn_red "Start Shizuku, then export 'rish' and the matching .dex into Termux (SAF)."
+    warn_red "Continuing without changing PPK."
+    return 0
+  fi
+
+  log "Current phantom setting:"
+  local cur
+  cur="$(run_rish "dumpsys activity settings | grep -i phantom || true" || true)"
+  if echo "$cur" | grep -qi "Server is not running"; then
+    warn_red "Shizuku/rish server is not running (or not authorized)."
+    warn_red "Open Shizuku -> start the service -> authorize rish, then re-run:"
+    warn_red "  ./0_termux-setup.sh --ppk-only"
+    return 0
+  fi
+  printf "%s\n" "$cur"
+
+  local target=256
+  log "Applying: device_config put activity_manager max_phantom_processes $target"
+  local apply
+  apply="$(run_rish "device_config put activity_manager max_phantom_processes $target" || true)"
+  if echo "$apply" | grep -qi "Server is not running"; then
+    warn_red "Shizuku/rish server is not running (or not authorized)."
+    warn_red "Open Shizuku -> start the service -> authorize rish, then re-run:"
+    warn_red "  ./0_termux-setup.sh --ppk-only"
+    return 0
+  fi
+
+  log "Final phantom setting:"
+  run_rish "dumpsys activity settings | grep -i phantom || true" || true
+
+  ok "PPK fix applied (or re-applied)."
+}
+
+# -------------------------
+# Self-check summary
+# -------------------------
+self_check() {
+  local rel sdk major
+  rel="${ANDROID_REL:-?}"
+  sdk="${ANDROID_SDK:-?}"
+  major="$(android_major_12_to_13)"
+
+  log "Self-check summary:"
+  log "  Android release=$rel sdk=$sdk"
+
+  if have proot-distro; then
+    log "  proot-distro: present"
+    log "  proot-distro list:"
+    proot-distro list 2>/dev/null | sed 's/^/    /' || true
+    if debian_exists; then
+      ok "  Debian: present"
+    else
+      warn "  Debian: not present"
+    fi
+  else
+    warn "  proot-distro: not present"
+  fi
+
+  if rish_export_available_in_home; then
+    ok "  rish export: present in HOME (~/rish, ~/rish*.dex)"
+  else
+    warn "  rish export: not found in HOME"
+  fi
+
+  if have rish; then
+    ok "  rish: installed in PATH"
+    log "  rish -c id:"
+    run_rish "id" | sed 's/^/    /' || true
+    if [[ -n "$major" ]]; then
+      log "  phantom setting (via rish):"
+      run_rish "dumpsys activity settings | grep -i phantom || true" | sed 's/^/    /' || true
+    fi
+  else
+    warn "  rish: not installed in PATH"
+  fi
+}
+
+# -------------------------
+# Main
+# -------------------------
+main() {
+  acquire_wakelock
+  step_termux_repo_select_once
+  step_termux_base
+
+  if [[ "$PPK_ONLY" -eq 1 ]]; then
+    step_ppk_fix_android_12_13
+    self_check
+    ok "Done (--ppk-only)."
+    exit 0
+  fi
+
+  step_debian_bootstrap_default
+
+  # IMPORTANT: keep this last so users can re-run it quickly.
+  step_ppk_fix_android_12_13
+
+  self_check
+
+  ok "0_termux-setup.sh completed."
+  log "Tip: re-run only the PPK fix: ./0_termux-setup.sh --ppk-only"
+  log "Tip: clean Debian environment: ./0_termux-setup.sh --reset-debian"
+  ok "You can proceed with: proot-distro login debian"
+}
+
+main "$@"