update mkshrc

- add busybox env
- fix user
- add sudo
- update man
- frida in dev

docs/shell.sh

@@ -1,36 +1,96 @@
-# Env
-export PATH='/sbin:/system/sbin:/product/bin:/apex/com.android.runtime/bin:/system/bin:/system/xbin:/odm/bin:/vendor/bin:/vendor/xbin'
+#!/system/bin/sh
 
-# Path
-export TMP='/data/local/tmp/'
-export APP='/data/data'
-export LOCAL='/storage/emulated/0'
-export WIFI='/data/misc/wifi'
+# ==UserScript==
+# @name         mkshrc
+# @namespace    https://github.com/hyugogirubato/KeyDive
+# @version      0.1
+# @description  null
+# @author       hyugogirubato
+# @match        Android
+# ==/UserScript==
 
-# Color
-alias ls='ls --color=auto'
-alias grep='grep --color=auto'
-alias fgrep='fgrep --color=auto'
-alias egrep='egrep --color=auto'
-alias logcat='logcat -v color'
-alias ip='ip -c'
 
-# Custom
+# Set hostname based on device serial number
+export HOSTNAME=$(getprop ro.boot.serialno)
+
+# Determine if the script is running as root
+export USER=$(id -u -n)
+export LOGNAME=$USER
+
+frida="${TMPDIR:-/data/local/tmp}/frida-server"
+if [ ! -f "$frida" ]; then
+  version='16.2.1'
+  url="https://github.com/frida/frida/releases/download/$version/frida-server-$version-android-arm.xz"
+  # TODO: detect binary abi
+fi
+
+
+# Define and check the existence of BusyBox
+busybox="${TMPDIR:-/data/local/tmp}/busybox"
+if [ ! -f "$busybox" ]; then
+  url='https://busybox.net/downloads/binaries/1.26.2-defconfig-multiarch'
+  abi=$(getprop ro.product.cpu.abi)
+  binary=$(echo "$abi" | grep -q 'arm' && echo 'busybox-armv6l' || echo 'busybox-x86_64')
+  echo "Downloading BusyBox binary for $abi from $url/$binary"
+  curl -o "$busybox" "$url/$binary" || {
+    echo "ERROR: Failed to download BusyBox binary: $busybox"
+    return 1
+  }
+fi
+
+# Ensure BusyBox binary is executable
+chown shell:shell "$busybox"
+chmod +x "$busybox"
+
+# Alias all available BusyBox functions if not already in PATH
+for func in $( $busybox --list ); do
+  if ! which "$func" >/dev/null 2>&1 && [ "$func" != 'man' ]; then
+    alias "$func"="$busybox $func" 2>/dev/null
+  fi
+done
+
+# Enhance shell commands with color support if available
+if ls --color=auto > /dev/null 2>&1; then
+  alias ls='ls --color=auto'
+  alias grep='grep --color=auto'
+  alias fgrep='fgrep --color=auto'
+  alias egrep='egrep --color=auto'
+  alias logcat='logcat -v color'
+  alias ip='ip -c'
+fi
+
+# Define commonly used aliases
 alias ll='ls -alF'
 alias la='ls -A'
-
 alias l='ls -CF'
 alias ipa='ip a'
 alias rm='rm -rf'
 
-# Extra
+# Define a function to display a directory tree
 tree() {
-  path=${1:-.}
-  find ${path} -print | sort | sed 's;[^/]*/;|---;g;s;---|; |;g'
+  local path=${1:-.}
+  find "$path" -print | sort | sed 's;[^/]*/;|---;g;s;---|; |;g'
 }
 
+# Simulate 'man' command using help option for commands
 man() {
-  ${1} --help
+  if [ -z "$1" ]; then
+    echo "What manual page do you want?"
+    echo "For example, try 'man ls'."
+    return 1
+  else
+    "$1" --help
+  fi
 }
 
-clear
+# Define a sudo-like function
+sudo() {
+  if [ "$(id -u)" -eq 0 ]; then
+    $*
+  elif which su >/dev/null 2>&1; then
+    su -c "$*"
+  else
+    echo 'ERROR: su binary not found'
+    return 127
+  fi
+}