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iiab-tools/android/0_termux-setup_v2.sh

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#!/data/data/com.termux/files/usr/bin/bash
set -euo pipefail
# 0_termux-setupv2.sh
# - Termux bootstrap (packages, wakelock)
# - proot-distro + Debian bootstrap
# - ADB wireless pair/connect via Termux:API notifications (no Shizuku)
# - Optional PPK / phantom-process tweaks (best-effort)
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; }
need() { have "$1" || return 1; }
die() { echo "[!] $*" >&2; exit 1; }
# -------------------------
# Logging
# -------------------------
LOG_ENABLED=1
LOG_FILE="" # if empty, auto-generate under $LOG_DIR
LOG_KEEP=20 # keep last N logs
rotate_logs() {
[[ -d "${LOG_DIR:-}" ]] || return 0
local n=$((LOG_KEEP + 1))
while IFS= read -r f; do
[[ -n "${f:-}" ]] || continue
[[ -n "${LOG_FILE:-}" && "$f" == "$LOG_FILE" ]] && continue
rm -f -- "$f" 2>/dev/null || true
done < <(ls -1t "$LOG_DIR"/*.log 2>/dev/null | tail -n +"$n" || true)
}
setup_logging() {
# Save original console fds so interactive tools still work after we redirect stdout/stderr.
exec 3>&1 4>&2
# If logging is disabled, still allow --debug to trace to console.
if [[ "${LOG_ENABLED:-1}" -ne 1 ]]; then
if [[ "${DEBUG:-0}" -eq 1 ]]; then
set -x
ok "Debug trace enabled (bash -x) -> console (logging disabled)"
fi
return 0
fi
mkdir -p "$LOG_DIR" 2>/dev/null || true
if [[ -z "${LOG_FILE:-}" ]]; then
LOG_FILE="${LOG_DIR}/0_termux-setupv2.$(date +%Y%m%d-%H%M%S).log"
else
# Best-effort: ensure parent dir exists
mkdir -p "$(dirname -- "$LOG_FILE")" 2>/dev/null || true
fi
# Header (best-effort)
{
echo "=== iiab termux setup v2 log ==="
echo "Started: $(date -Is)"
echo "Script: $0"
echo "Args: ${*:-}"
echo "Android SDK=${ANDROID_SDK:-?} Release=${ANDROID_REL:-?}"
echo "PWD: $(pwd 2>/dev/null || true)"
echo "================================"
} >>"$LOG_FILE" 2>/dev/null || true
# Best-effort: restrict log readability (may include debug/xtrace)
chmod 600 "$LOG_FILE" 2>/dev/null || true
rotate_logs
# Duplicate stdout/stderr to console + log (strip ANSI in log)
exec \
> >(tee >(sed -E 's/\x1B\[[0-9;]*[ -/]*[@-~]//g' >>"$LOG_FILE")) \
2> >(tee >(sed -E 's/\x1B\[[0-9;]*[ -/]*[@-~]//g' >>"$LOG_FILE") >&2)
ok "Logging to: $LOG_FILE"
# If --debug, send xtrace only to log
if [[ "${DEBUG:-0}" -eq 1 ]]; then
exec 9>>"$LOG_FILE"
export BASH_XTRACEFD=9
export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
set -x
ok "Debug trace enabled (bash -x) -> log only"
fi
}
# -------------------------
# Defaults
# -------------------------
STATE_DIR="${HOME}/.iiab-android"
ADB_STATE_DIR="${STATE_DIR}/adbw_pair"
LOG_DIR="${STATE_DIR}/logs"
mkdir -p "$STATE_DIR" "$ADB_STATE_DIR"
HOST="127.0.0.1"
CONNECT_PORT=""
TIMEOUT_SECS=180
NOTIF_BASE_ID=9400
NOTIF_SEQ=0
LAST_NOTIF_ID=""
CLEANUP_OFFLINE=1
DEBUG=0
RESET_DEBIAN=0
ONLY_CONNECT=0
CHECK_NO_ADB=0
CHECK_SDK=""
CHECK_MON=""
CHECK_PPK=""
# Modes are mutually exclusive (baseline is default)
MODE="baseline" # baseline|with-adb|adb-only|connect-only|ppk-only|check|all
MODE_SET=0
# Termux apt options (avoid conffile prompts)
TERMUX_APT_OPTS=( "-y" "-o" "Dpkg::Options::=--force-confdef" "-o" "Dpkg::Options::=--force-confold" )
termux_apt() { apt-get "${TERMUX_APT_OPTS[@]}" "$@"; }
usage() {
cat <<'EOF'
Usage:
./0_termux-setupv2.sh
-> Termux baseline + Debian bootstrap (idempotent). No ADB prompts.
./0_termux-setupv2.sh --with-adb
-> Termux baseline + Debian bootstrap + ADB pair/connect if needed (skips if already connected).
./0_termux-setupv2.sh --adb-only
-> Only ADB pair/connect if needed (no Debian; skips if already connected).
./0_termux-setupv2.sh --connect-only [CONNECT_PORT]
-> Connect-only (no pairing). Use this after the device was already paired before.
./0_termux-setupv2.sh --ppk-only
-> Set PPK only: max_phantom_processes=256 (requires ADB already connected).
Android 14-16 usually achieve this via "Disable child process restrictions" in Developer Options.
./0_termux-setupv2.sh --check
-> Check readiness: developer options flag (if readable),
(Android 14+) "Disable child process restrictions" proxy flag, and (Android 12-13) PPK effective value.
./0_termux-setupv2.sh --all
-> baseline + Debian + ADB pair/connect if needed + (Android 12-13 only) apply --ppk + run --check.
Optional:
--connect-port 41313 (5 digits) Skip CONNECT PORT prompt
--timeout 180 Seconds to wait per prompt
--reset-debian Reset (reinstall) Debian in proot-distro
--no-log Disable logging
--log-file /path/file Write logs to a specific file
--debug Extra logs
Notes:
- ADB prompts require: `pkg install termux-api` + Termux:API app installed + notification permission.
- Wireless debugging must be enabled.
- This script never uses adb root.
EOF
}
# -------------------------
# Android info
# -------------------------
get_android_sdk() { getprop ro.build.version.sdk 2>/dev/null || true; }
get_android_release() { getprop ro.build.version.release 2>/dev/null || true; }
ANDROID_SDK="$(get_android_sdk)"
ANDROID_REL="$(get_android_release)"
# -------------------------
# Wakelock (Termux:API)
# -------------------------
WAKELOCK_HELD=0
acquire_wakelock() {
if have termux-wake-lock; then
if termux-wake-lock; then
WAKELOCK_HELD=1
ok "Wakelock acquired (termux-wake-lock)."
else
warn "Failed to acquire wakelock (termux-wake-lock)."
fi
else
warn "termux-wake-lock not available. Install: pkg install termux-api + Termux:API app."
fi
}
release_wakelock() {
if [[ "$WAKELOCK_HELD" -eq 1 ]] && have termux-wake-unlock; then
termux-wake-unlock || true
ok "Wakelock released (termux-wake-unlock)."
fi
}
trap 'cleanup_notif >/dev/null 2>&1 || true; release_wakelock >/dev/null 2>&1 || true' EXIT INT TERM
# -------------------------
# One-time repo selector
# -------------------------
step_termux_repo_select_once() {
local stamp="$STATE_DIR/stamp.termux_repo_selected"
[[ -f "$stamp" ]] && return 0
if ! have termux-change-repo; then
warn "termux-change-repo not found; skipping mirror selection."
return 0
fi
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 script directly to be prompted)."
return 0
fi
ans="${ans:-Y}"
if [[ "$ans" =~ ^[Yy]$ ]]; then
# Logging redirects stdout/stderr to pipes, which can break the UI.
# Run it using /dev/tty and the original console fds (3/4).
if [[ -r /dev/tty ]]; then
termux-change-repo </dev/tty >&3 2>&4 || true
else
termux-change-repo || true
fi
ok "Mirror selection completed (or skipped inside the UI)."
else
warn "Mirror selection skipped by user."
fi
date > "$stamp"
return 0
fi
warn "No /dev/tty available; skipping mirror selection."
return 0
}
# -------------------------
# Baseline packages
# -------------------------
step_termux_base() {
local stamp="$STATE_DIR/stamp.termux_base"
if [[ -f "$stamp" ]]; then
ok "Termux baseline already prepared (stamp found)."
return 0
fi
log "Updating Termux packages (noninteractive) and installing baseline dependencies..."
export DEBIAN_FRONTEND=noninteractive
termux_apt update || true
termux_apt upgrade || true
termux_apt install \
ca-certificates \
curl \
coreutils \
grep \
sed \
gawk \
openssh \
proot proot-distro \
android-tools \
termux-api \
|| true
if have proot-distro && have adb && have termux-notification; then
ok "Termux baseline ready."
date > "$stamp"
else
warn_red "Baseline incomplete (missing proot-distro/adb/termux-notification). Not stamping; rerun later."
fi
}
# -------------------------
# Debian bootstrap
# -------------------------
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 not found; attempting to install..."
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 $rc
}
step_debian_bootstrap_default() {
if ! ensure_proot_distro; then
warn "Unable to ensure proot-distro; skipping Debian bootstrap."
return 0
fi
if [[ "$RESET_DEBIAN" -eq 1 ]]; then
warn "Reset requested: reinstalling Debian (clean environment)..."
if proot-distro help 2>/dev/null | grep -qE '\breset\b'; then
proot-distro reset debian || true
else
if debian_exists; then proot-distro remove debian || true; fi
proot_install_debian_safe || true
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 || true
fi
fi
log "Installing minimal tools inside Debian (noninteractive)..."
proot-distro login debian -- bash -lc '
set -e
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confold \
install ca-certificates curl coreutils
' || true
ok "Debian bootstrap complete."
}
# -------------------------
# Termux:API sanity check (notifications)
# -------------------------
termux_api_ready() {
have termux-notification || return 1
# Quick probe: some Samsung setups fail until Termux:API app is installed/allowed.
# We try a harmless notification and remove it.
local msg="iiab test notification"
if ! termux-notification --id "$NOTIF_BASE_ID" --title "iiab" --content "$msg" --priority max --sound >/dev/null 2>&1; then
return 1
fi
if have termux-notification-remove; then
termux-notification-remove "$NOTIF_BASE_ID" >/dev/null 2>&1 || true
fi
return 0
}
sanitize_timeout() {
# Ensure TIMEOUT_SECS is a positive integer
if ! [[ "${TIMEOUT_SECS:-}" =~ ^[0-9]+$ ]]; then
warn "Invalid --timeout='${TIMEOUT_SECS:-}'. Falling back to 180."
TIMEOUT_SECS=180
elif (( TIMEOUT_SECS < 5 )); then
warn "Very low --timeout=${TIMEOUT_SECS}. Forcing minimum 5 seconds."
TIMEOUT_SECS=5
fi
}
cleanup_notif() {
have termux-notification-remove || return 0
termux-notification-remove "$NOTIF_BASE_ID" >/dev/null 2>&1 || true
if [[ -n "${LAST_NOTIF_ID:-}" ]]; then
termux-notification-remove "$LAST_NOTIF_ID" >/dev/null 2>&1 || true
fi
}
notify_ask_one() {
# args: key title content
local key="$1" title="$2" content="$3"
local out="$ADB_STATE_DIR/$key.txt"
rm -f "$out"
# Fresh notification each time + sound (use a new ID so Android plays sound each time)
local nid
nid=$((NOTIF_BASE_ID + 1 + NOTIF_SEQ))
NOTIF_SEQ=$((NOTIF_SEQ + 1))
LAST_NOTIF_ID="$nid"
if have termux-notification-remove; then
termux-notification-remove "$nid" >/dev/null 2>&1 || true
fi
termux-notification \
--id "$nid" \
--ongoing \
--priority max \
--title "$title" \
--content "$content" \
--sound \
--button1 "Answer" \
--button1-action "sh -lc 'printf \"%s\" \"\$REPLY\" > \"$out\"'" \
|| return 1
local start now
start="$(date +%s)"
while true; do
if [[ -s "$out" ]]; then
# Remove the prompt notification as soon as we got the answer
if have termux-notification-remove; then
termux-notification-remove "$nid" >/dev/null 2>&1 || true
fi
tr -d '\r\n' < "$out"
return 0
fi
now="$(date +%s)"
if (( now - start >= TIMEOUT_SECS )); then
# Remove the prompt notification on timeout too
if have termux-notification-remove; then
termux-notification-remove "$nid" >/dev/null 2>&1 || true
fi
return 1
fi
sleep 1
done
}
ask_port_5digits() {
# args: key title
local key="$1" title="$2" v=""
while true; do
v="$(notify_ask_one "$key" "$title" "(5 digits)")" || return 1
v="${v//[[:space:]]/}"
[[ "$v" =~ ^[0-9]{5}$ ]] || continue
echo "$v"
return 0
done
}
ask_code_6digits() {
local v=""
while true; do
v="$(notify_ask_one code "PAIR CODE" "(6 digits)")" || return 1
v="${v//[[:space:]]/}"
[[ -n "$v" ]] || continue
[[ "$v" =~ ^[0-9]+$ ]] || continue
# Normalize to 6 digits (allow missing leading zeros)
if ((${#v} < 6)); then
v="$(printf "%06d" "$v")"
fi
[[ "$v" =~ ^[0-9]{6}$ ]] || continue
echo "$v"
return 0
done
}
cleanup_offline_loopback() {
local keep_serial="$1" # e.g. 127.0.0.1:41313
local serial state rest
while read -r serial state rest; do
[[ -n "${serial:-}" ]] || continue
[[ "$serial" == ${HOST}:* ]] || continue
[[ "$state" == "offline" ]] || continue
[[ "$serial" == "$keep_serial" ]] && continue
adb disconnect "$serial" >/dev/null 2>&1 || true
done < <(adb devices 2>/dev/null | tail -n +2 | sed '/^[[:space:]]*$/d')
}
# -------------------------
# ADB wireless pair/connect wizard
# -------------------------
adb_pair_connect() {
need adb || die "Missing adb. Install: pkg install android-tools"
# Only require Termux:API when we will prompt the user
if [[ "$ONLY_CONNECT" != "1" || -z "${CONNECT_PORT:-}" ]]; then
termux_api_ready || die "Termux:API not ready."
fi
echo "[*] adb: $(adb version | head -n 1)"
adb start-server >/dev/null 2>&1 || true
if [[ "$ONLY_CONNECT" == "1" ]]; then
if [[ -n "$CONNECT_PORT" ]]; then
CONNECT_PORT="${CONNECT_PORT//[[:space:]]/}"
[[ "$CONNECT_PORT" =~ ^[0-9]{5}$ ]] || die "Invalid CONNECT PORT (must be 5 digits): '$CONNECT_PORT'"
else
echo "[*] Asking CONNECT PORT..."
CONNECT_PORT="$(ask_port_5digits connect "CONNECT PORT")" || die "Timeout waiting CONNECT PORT."
fi
local serial="${HOST}:${CONNECT_PORT}"
adb disconnect "$serial" >/dev/null 2>&1 || true
echo "[*] adb connect $serial"
adb connect "$serial" >/dev/null || die "adb connect failed to $serial. Verify Wireless debugging is enabled and CONNECT PORT is correct."
if [[ "$CLEANUP_OFFLINE" == "1" ]]; then
cleanup_offline_loopback "$serial"
fi
echo "[*] Devices:"
adb devices -l
echo "[*] ADB check (shell):"
adb -s "$serial" shell sh -lc 'echo "it worked: adb shell is working"; id' || true
cleanup_notif
ok "ADB connected (connect-only): $serial"
return 0
fi
if [[ -n "$CONNECT_PORT" ]]; then
CONNECT_PORT="${CONNECT_PORT//[[:space:]]/}"
[[ "$CONNECT_PORT" =~ ^[0-9]{5}$ ]] || die "Invalid --connect-port (must be 5 digits): '$CONNECT_PORT'"
else
echo "[*] Asking CONNECT PORT..."
CONNECT_PORT="$(ask_port_5digits connect "CONNECT PORT")" || die "Timeout waiting CONNECT PORT."
fi
echo "[*] Asking PAIR PORT..."
local pair_port
pair_port="$(ask_port_5digits pair "PAIR PORT")" || die "Timeout waiting PAIR PORT."
echo "[*] Asking PAIR CODE..."
local code
code="$(ask_code_6digits)" || die "Timeout waiting PAIR CODE."
local serial="${HOST}:${CONNECT_PORT}"
adb disconnect "$serial" >/dev/null 2>&1 || true
echo "[*] adb pair ${HOST}:${pair_port}"
printf '%s\n' "$code" | adb pair "${HOST}:${pair_port}" || die "adb pair failed. Verify PAIR PORT and PAIR CODE (and that the pairing dialog is showing)."
echo "[*] adb connect $serial"
adb connect "$serial" >/dev/null || die "adb connect failed after pairing. Re-check CONNECT PORT and Wireless debugging."
if [[ "$CLEANUP_OFFLINE" == "1" ]]; then
cleanup_offline_loopback "$serial"
fi
echo "[*] Devices:"
adb devices -l
echo "[*] ADB check (shell):"
adb -s "$serial" shell sh -lc 'echo "it worked: adb shell is working"; getprop ro.product.model; getprop ro.build.version.release' || true
cleanup_notif
ok "ADB connected: $serial"
}
# Return state for an exact serial (e.g. "device", "offline", empty)
adb_device_state() {
local s="$1"
adb devices 2>/dev/null | awk -v s="$s" 'NR>1 && $1==s {print $2; exit}'
}
# Return first loopback serial in "device" state (e.g. 127.0.0.1:41313)
adb_any_loopback_device() {
adb devices 2>/dev/null | awk -v h="$HOST" 'NR>1 && $2=="device" && index($1, h":")==1 {print $1; exit}'
}
# Pick the loopback serial we will operate on:
# - If CONNECT_PORT is set, require that exact HOST:PORT to be in "device" state.
# - Otherwise, return the first loopback device.
adb_pick_loopback_serial() {
if [[ -n "${CONNECT_PORT:-}" ]]; then
local p="${CONNECT_PORT//[[:space:]]/}"
[[ "$p" =~ ^[0-9]{5}$ ]] || return 1
local target="${HOST}:${p}"
[[ "$(adb_device_state "$target")" == "device" ]] && { echo "$target"; return 0; }
return 1
fi
adb_any_loopback_device
}
# If already connected, avoid re-pairing/re-connecting prompts (useful for --all),
# BUT only consider loopback/target connections as "already connected".
adb_pair_connect_if_needed() {
need adb || die "Missing adb. Install: pkg install android-tools"
adb start-server >/dev/null 2>&1 || true
local serial=""
# If user provided a connect-port, insist on that exact target serial.
if [[ -n "${CONNECT_PORT:-}" ]]; then
CONNECT_PORT="${CONNECT_PORT//[[:space:]]/}"
[[ "$CONNECT_PORT" =~ ^[0-9]{5}$ ]] || die "Invalid --connect-port (must be 5 digits): '$CONNECT_PORT'"
local target="${HOST}:${CONNECT_PORT}"
if [[ "$(adb_device_state "$target")" == "device" ]]; then
ok "ADB already connected to target: $target (skipping pair/connect)."
return 0
fi
# Try connect-only first (in case it was already paired before)
adb connect "$target" >/dev/null 2>&1 || true
if [[ "$(adb_device_state "$target")" == "device" ]]; then
ok "ADB connected to target: $target (connect-only succeeded; skipping pair)."
return 0
fi
# Not connected: run full wizard (pair+connect)
adb_pair_connect
return $?
fi
# No explicit port: only skip if we already have a loopback device connected.
if serial="$(adb_any_loopback_device 2>/dev/null)"; then
ok "ADB already connected (loopback): $serial (skipping pair/connect)."
return 0
fi
adb_pair_connect
}
require_adb_connected() {
need adb || { warn_red "Missing adb. Install: pkg install android-tools"; return 1; }
adb start-server >/dev/null 2>&1 || true
if ! adb_pick_loopback_serial >/dev/null 2>&1; then
warn_red "No ADB device connected."
warn "If already paired before: run --connect-only [PORT]."
warn "Otherwise: run --adb-only to pair+connect."
return 1
fi
return 0
}
adb_loopback_serial_or_die() {
local s
s="$(adb_pick_loopback_serial 2>/dev/null)" || return 1
echo "$s"
}
# -------------------------
# PPK / phantom-process tuning (best-effort)
# -------------------------
ppk_fix_via_adb() {
need adb || die "Missing adb. Install: pkg install android-tools"
local serial
if ! serial="$(adb_pick_loopback_serial)"; then
CHECK_NO_ADB=1
warn "No ADB loopback device connected (expected ${HOST}:${CONNECT_PORT:-*})."
return 1
fi
ok "Using ADB device: $serial"
log "Setting PPK: max_phantom_processes=256"
# Some Android versions may ignore/rename this; we don't hard-fail.
adb -s "$serial" shell sh -lc '
set -e
# Persist device_config changes if supported
if command -v device_config >/dev/null 2>&1; then
device_config set_sync_disabled_for_tests persistent >/dev/null 2>&1 || true
device_config put activity_manager max_phantom_processes 256 || true
echo "dumpsys effective max_phantom_processes:"
dumpsys activity settings 2>/dev/null | grep -i "max_phantom_processes=" | head -n 1 || true
else
echo "device_config not found; skipping."
fi
' || true
ok "PPK set done (best effort)."
return 0
}
# Prefer Android 14+ feature-flag override if present:
# OFF -> true, ON -> false
adb_get_child_restrictions_flag() {
local serial="$1"
adb -s "$serial" shell getprop persist.sys.fflag.override.settings_enable_monitor_phantom_procs \
2>/dev/null | tr -d '\r' || true
}
# -------------------------
# Check readiness (best-effort)
# -------------------------
check_readiness() {
# Reset exported check signals so final_advice() never sees stale values
CHECK_NO_ADB=0
CHECK_SDK=""
CHECK_MON=""
CHECK_PPK=""
need adb || die "Missing adb. Install: pkg install android-tools"
adb start-server >/dev/null 2>&1 || true
local serial
if ! serial="$(adb_pick_loopback_serial)"; then
CHECK_NO_ADB=1
# Best-effort: keep local SDK so final_advice can still warn on A12-13.
CHECK_SDK="${ANDROID_SDK:-}"
warn_red "No ADB device connected. Cannot run checks."
warn "If already paired before: run --connect-only [PORT]."
warn "Otherwise: run --adb-only to pair+connect."
return 1
fi
ok "Check using ADB device: $serial"
local dev_enabled sdk rel mon mon_fflag ds ppk_eff
sdk="$(adb -s "$serial" shell getprop ro.build.version.sdk 2>/dev/null | tr -d '\r' || true)"
rel="$(adb -s "$serial" shell getprop ro.build.version.release 2>/dev/null | tr -d '\r' || true)"
dev_enabled="$(adb -s "$serial" shell settings get global development_settings_enabled 2>/dev/null | tr -d '\r' || true)"
mon_fflag="$(adb_get_child_restrictions_flag "$serial")"
if [[ "$mon_fflag" == "true" || "$mon_fflag" == "false" ]]; then
mon="$mon_fflag"
else
mon="$(adb -s "$serial" shell settings get global settings_enable_monitor_phantom_procs 2>/dev/null | tr -d '\r' || true)"
fi
# Get effective value from dumpsys (device_config get may return 'null' even when an effective value exists)
ds="$(adb -s "$serial" shell dumpsys activity settings 2>/dev/null | tr -d '\r' || true)"
ppk_eff="$(printf '%s\n' "$ds" | awk -F= '/max_phantom_processes=/{print $2; exit}' | tr -d '[:space:]' || true)"
# Export check signals for the final advice logic
CHECK_SDK="${sdk:-}"
CHECK_MON="${mon:-}"
CHECK_PPK="${ppk_eff:-}"
log " Android release=${rel:-?} sdk=${sdk:-?}"
if [[ "${dev_enabled:-}" == "1" ]]; then
ok " Developer options: enabled (development_settings_enabled=1)"
elif [[ -n "${dev_enabled:-}" ]]; then
warn " Developer options: unknown/disabled (development_settings_enabled=${dev_enabled})"
else
warn " Developer options: unreadable (permission/ROM differences)."
fi
# Android 14+ only: "Disable child process restrictions" proxy flag
if [[ "${sdk:-}" =~ ^[0-9]+$ ]] && (( sdk >= 34 )); then
if [[ "${mon:-}" == "false" ]]; then
ok " Child restrictions: OK (monitor=false)"
elif [[ "${mon:-}" == "true" ]]; then
warn " Child restrictions: NOT OK (monitor=true)"
elif [[ -n "${mon:-}" && "${mon:-}" != "null" ]]; then
warn " Child restrictions: unknown (${mon})"
else
warn " Child restrictions: unreadable/absent"
fi
fi
# Android 12-13 only: PPK matters (use effective value from dumpsys)
if [[ "${sdk:-}" =~ ^[0-9]+$ ]] && (( sdk >= 31 && sdk <= 33 )); then
if [[ "${ppk_eff:-}" =~ ^[0-9]+$ ]]; then
if (( ppk_eff >= 256 )); then
ok " PPK: OK (max_phantom_processes=${ppk_eff})"
else
warn " PPK: low (max_phantom_processes=${ppk_eff}) -> suggest: run --ppk-only"
fi
else
warn " PPK: unreadable (dumpsys max_phantom_processes='${ppk_eff:-}')."
fi
fi
log " dumpsys (phantom-related):"
printf '%s\n' "$ds" | grep -i phantom || true
if [[ "${sdk:-}" =~ ^[0-9]+$ ]] && (( sdk >= 34 )); then
log " Note: On A14+, max_phantom_processes is informational; rely on Child restrictions."
fi
if [[ "${sdk:-}" =~ ^[0-9]+$ ]] && (( sdk >= 34 )) && [[ "${mon:-}" == "false" ]]; then
log " Child restrictions OK."
fi
return 0
}
# -------------------------
# Self-check
# -------------------------
self_check() {
log "Self-check summary:"
log " Android release=${ANDROID_REL:-?} sdk=${ANDROID_SDK:-?}"
if have proot-distro; then
log " proot-distro: present"
log " proot-distro list:"
proot-distro list 2>/dev/null | sed 's/^/ /' || true
if debian_exists; then ok " Debian: present"; else warn " Debian: not present"; fi
else
warn " proot-distro: not present"
fi
if have adb; then
log " adb: present"
adb devices -l 2>/dev/null | sed 's/^/ /' || true
local serial
if serial="$(adb_pick_loopback_serial 2>/dev/null)"; then
log " adb shell id (first device):"
adb -s "$serial" shell id 2>/dev/null | sed 's/^/ /' || true
fi
else
warn " adb: not present"
fi
if have termux-wake-lock; then ok " Termux:API wakelock: available"; else warn " Termux:API wakelock: not available"; fi
if have termux-notification; then ok " Termux:API notifications: command present"; else warn " Termux:API notifications: missing"; fi
}
final_advice() {
# 1) Android-related warnings (only meaningful if we attempted checks)
local sdk="${CHECK_SDK:-${ANDROID_SDK:-}}"
local adb_connected=0
local serial="" mon="" mon_fflag=""
# Best-effort: detect whether an ADB loopback device is already connected.
# (We do NOT prompt/pair here; we only check current state.)
if have adb; then
adb start-server >/dev/null 2>&1 || true
if adb_pick_loopback_serial >/dev/null 2>&1; then
adb_connected=1
serial="$(adb_pick_loopback_serial 2>/dev/null || true)"
fi
fi
# Baseline safety gate:
# On Android 12-13 (SDK 31-33), IIAB/proot installs can fail if PPK is low (often 32).
# Baseline mode does NOT force ADB pairing nor run check_readiness(), so PPK may be unknown.
# If PPK is not determined, suggest running --all BEFORE telling user to proceed to proot-distro.
if [[ "$MODE" == "baseline" ]]; then
if [[ "$sdk" =~ ^[0-9]+$ ]] && (( sdk >= 31 && sdk <= 33 )); then
# If we didn't run checks, CHECK_PPK will be empty. Even with adb_connected=1, baseline
# still doesn't populate CHECK_PPK unless user ran --check/--all.
if [[ "${CHECK_PPK:-}" != "" && "${CHECK_PPK:-}" =~ ^[0-9]+$ ]]; then
: # PPK determined -> ok to continue with normal advice below
else
warn "Android 12-13: PPK value hasn't been verified (max_phantom_processes may be low, e.g. 32)."
warn "Before starting the IIAB install, run the complete setup so it can apply/check PPK=256; otherwise the installation may fail:"
ok " ./0_termux-setupv2.sh --all"
return 0
fi
elif [[ "$sdk" =~ ^[0-9]+$ ]] && (( sdk >= 34 )); then
# On Android 14+, rely on "Disable child process restrictions"
# Proxy signals: settings_enable_monitor_phantom_procs (or the fflag override).
# Baseline does not run check_readiness(), so CHECK_MON is usually empty.
if [[ "${CHECK_MON:-}" == "false" ]]; then
: # Verified OK (rare in baseline) -> continue
else
# If ADB is already connected, try to read the flag best-effort (no prompts).
if [[ "$adb_connected" -eq 1 && -n "${serial:-}" ]]; then
mon_fflag="$(adb_get_child_restrictions_flag "$serial")"
if [[ "$mon_fflag" == "true" || "$mon_fflag" == "false" ]]; then
mon="$mon_fflag"
else
mon="$(adb -s "$serial" shell settings get global settings_enable_monitor_phantom_procs 2>/dev/null | tr -d '\r' || true)"
fi
fi
if [[ "${mon:-}" == "false" ]]; then
: # Restrictions already disabled -> ok to continue
else
if [[ "${mon:-}" == "true" ]]; then
warn "Android 14+: child process restrictions appear ENABLED (monitor=true)."
else
warn "Android 14+: child process restrictions haven't been verified (monitor flag unreadable/unknown)."
fi
warn "Before starting the IIAB install, run the complete setup (--all) so it can guide you to verify such setting; otherwise the installation may fail:"
ok " ./0_termux-setupv2.sh --all"
return 0
fi
fi
fi
fi
if [[ "${CHECK_NO_ADB:-0}" -eq 1 ]]; then
# If we could not check, still warn on A12-13 because PPK is critical there
if [[ "$sdk" =~ ^[0-9]+$ ]] && (( sdk >= 31 && sdk <= 33 )); then
warn "A12-13: verify PPK=256 before installing IIAB."
fi
else
# A14+ child restrictions proxy (only if readable)
if [[ "$sdk" =~ ^[0-9]+$ ]] && (( sdk >= 34 )) && [[ "${CHECK_MON:-}" == "true" ]]; then
warn "A14+: disable child process restrictions before installing IIAB."
fi
# Only warn about PPK on A12-13 (A14+ uses child restrictions)
if [[ "$sdk" =~ ^[0-9]+$ ]] && (( sdk >= 31 && sdk <= 33 )); then
if [[ "${CHECK_PPK:-}" =~ ^[0-9]+$ ]] && (( CHECK_PPK < 256 )); then
warn "PPK is low (${CHECK_PPK}); consider --ppk-only."
fi
fi
fi
# 2) Debian “next step” should only be shown for modes that actually bootstrap Debian
case "$MODE" in
baseline|with-adb|all)
if debian_exists; then
ok "Next: proot-distro login debian"
else
warn "Debian not present. Run: proot-distro install debian"
fi
;;
*)
# adb-only/connect-only/ppk-only/check: do not suggest Debian login as a generic ending
;;
esac
}
# -------------------------
# Args
# -------------------------
set_mode() {
local new="$1"
if [[ "$MODE_SET" -eq 1 ]]; then
die "Modes are mutually exclusive. Already set: --${MODE}. Tried: --${new}"
fi
MODE="$new"
MODE_SET=1
}
while [[ $# -gt 0 ]]; do
case "$1" in
--with-adb) set_mode "with-adb"; shift ;;
--adb-only) set_mode "adb-only"; shift ;;
--connect-only)
set_mode "connect-only"
ONLY_CONNECT=1
# Optional positional port (5 digits)
if [[ "${2:-}" =~ ^[0-9]{5}$ ]]; then
CONNECT_PORT="$2"
shift 2
else
shift
fi
;;
--ppk-only) set_mode "ppk-only"; shift ;;
--check) set_mode "check"; shift ;;
--all) set_mode "all"; shift ;;
--connect-port) CONNECT_PORT="${2:-}"; shift 2 ;;
--timeout) TIMEOUT_SECS="${2:-180}"; shift 2 ;;
--host) HOST="${2:-127.0.0.1}"; shift 2 ;;
--reset-debian|--clean-debian) RESET_DEBIAN=1; shift ;;
--no-log) LOG_ENABLED=0; shift ;;
--log-file) LOG_FILE="${2:-}"; shift 2 ;;
--debug) DEBUG=1; shift ;;
-h|--help) usage; exit 0 ;;
*) shift ;;
esac
done
# -------------------------
# Main flows
# -------------------------
main() {
setup_logging "$@"
sanitize_timeout
acquire_wakelock
case "$MODE" in
baseline)
step_termux_repo_select_once
step_termux_base
step_debian_bootstrap_default
;;
with-adb)
step_termux_repo_select_once
step_termux_base
step_debian_bootstrap_default
adb_pair_connect_if_needed
;;
adb-only)
step_termux_base
adb_pair_connect_if_needed
;;
connect-only)
step_termux_base
adb_pair_connect
;;
ppk-only)
# No baseline, no Debian. Requires adb already available + connected.
require_adb_connected || exit 1
ppk_fix_via_adb || true
;;
check)
step_termux_base
check_readiness || true
;;
all)
step_termux_repo_select_once
step_termux_base
step_debian_bootstrap_default
adb_pair_connect_if_needed
# Android 12-13 only (SDK 31-33): apply PPK tuning automatically
if [[ "${ANDROID_SDK:-}" =~ ^[0-9]+$ ]] && (( ANDROID_SDK >= 31 && ANDROID_SDK <= 33 )); then
log "Android SDK=${ANDROID_SDK} detected -> applying --ppk automatically (12-13 rule)."
ppk_fix_via_adb || true
else
log "Android SDK=${ANDROID_SDK:-?} -> skipping auto-PPK (only for Android 12-13)."
fi
check_readiness || true
;;
*)
die "Unknown MODE='$MODE'"
;;
esac
self_check
ok "0_termux-setupv2.sh completed (mode=$MODE)."
log "---- Mode list ----"
log "Connect-only: --connect-only [PORT]"
log "Pair+connect: --adb-only"
log "Check: --check"
log "Apply PPK: --ppk-only"
log "Base+Debian+Pair+connect: --with-adb"
log "Full run: --all"
log "Reset Debian: --reset-debian"
log "-------------------"
final_advice
}
main "$@"
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