#!/bin/bash
#字体颜色
red="\e[31;1m"      #红
green="\e[32;1m"   #绿
yellow="\e[33;1m"  #黄
blue="\e[34;1m"    #蓝
purple="\e[35;1m"    #紫红
cyanine="\e[36;1m"    #青蓝
white="\e[0m"       ##白色  


echo `date +"%Y-%m-%d %H:%M:%S"` > `pwd`/Time

msg() { clear;echo -e "\n\t\t$blue[*]$white$1$2$white\n" ;:;}  ##自定义通告颜色
enter() { echo -en "\n\n$green按回车继续$white";read op ;:;} 
cmsg() { colour=$1;command=$2;echo -e "\n$blue[*]$white$colour$command$white";command $command ;:;}  ##自定义通告颜色

msg $red "等待授权存储…®login"
echo -e "\n$yellow小提示：请允许应用使用存储，否则会导致无法正常使用！$white"
enter
cmsg $green "termux-setup-storage"
enter
msg $red "等待授权后台运行…®login"
echo -e "\n$yellow小提示：请允许应用后台无限制运行(即加入白名单)，否则会导致应用卡顿！$white"
enter
cmsg $green "termux-wake-lock"
enter

cat<<-EOF>	$PREFIX/etc/apt/sources.list
# The main termux repository, behind cloudflare cache:
# deb https://packages-cf.termux.dev/apt/termux-main/ stable main
# The main termux repository:
#deb https://packages.termux.dev/apt/termux-main/ stable main
deb https://mirrors.bfsu.edu.cn/termux/apt/termux-main stable main
EOF


msg $red "更新软件包"
echo -e "\n$yellow小提示：更新过程如果暂停，请输入y再回车！$white"
enter
cmsg $green "pkg update -y"
cmsg $green "pkg i wget proot x11-repo aria2 termux-api libusb clang -y"

while :
do
	#wget -c "https://raw.githubusercontent.com/WindowHZT/termux-ubuntu2004/main/mix/termux-x11.deb"
	wget -c "gitee.com/djyd/termux-ubuntu2004/raw/main/mix/termux-x11.deb"
	if [ ! "$?" == "0" ];then
		echo -e "$yellow下载资源失败！请检查网络再继续下载……"
		enter
	else
		cmsg $green "apt install ./termux-x11.deb -y"
		break
	fi
done


msg $red "配置声音模块"
cmsg $green "pkg i pulseaudio -y"
pulseaudio --start >> /dev/null 2>&1
if [ -e ~/../usr/etc/pulse/default.pa ];then
	echo "load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1 auth-anonymous=1" >> ~/../usr/etc/pulse/default.pa
fi

if [ -e ~/../usr/etc/pulse/daemon.conf ];then
	sed -i "s/; exit-idle/#; exit-idle/g" ~/../usr/etc/pulse/daemon.conf
	echo "exit-idle-time = 180" >> ~/../usr/etc/pulse/daemon.conf
	echo "将timeout修改为180秒"
else
	echo "exit-idle-time = 180" >> ~/../usr/etc/pulse/daemon.conf
	echo "将timeout修改为180秒"
fi


folder=ubuntu20-fs
tarball="ubuntu20-rootfs.tar.gz"
mkdir -p ubuntu20-binds
cur=`pwd`
if [ -d "$folder" ]; then
	first=1
	echo -e "\n$yellow检测到$folder目录存在！$white"
	echo -e "\n$yellow它可能是一个完整的系统或者卸载残留！$white"
	echo -e "\n脚本退出"
	exit
fi

if [ "$first" != 1 ];then
	if [ ! -f $tarball ]; then
		msg $red "下载Rootfs，请保持你的网络良好"
		case `dpkg --print-architecture` in
		aarch64)
			archurl="arm64" ;;
		arm)
			archurl="armhf" ;;
		x86_64 | amd64)
			archurl="amd64" ;;	
		*)
			echo "未知构架"; exit 1 ;;
		esac
		while :
		do
			#wget -c "https://github.com/WindowHZT/termux-ubuntu2004/releases/download/ubuntu2004/focal-$archurl.tar.gz" -O ubuntu20-rootfs.tar.gz
			wget -c "gitee.com/djyd/termux-ubuntu2004/releases/download/ubuntu2004/focal-$archurl.tar.gz" -O ubuntu20-rootfs.tar.gz
			if [ ! "$?" == "0" ];then
				echo -e "$yellow下载资源失败！请检查网络再继续下载……"
				enter
			else
				break
			fi
		done
fi
	mkdir -p "$folder"
	cd "$folder"
	msg $red "解压Rootfs，请耐心等待。"
	proot --link2symlink tar -xf ${cur}/${tarball} --exclude=dev||:
	
	cd $HOME/$folder/var/cache/apt/archives
	if [ "$archurl" == "arm64" ];then
		for x in 1 2 3 4
		do
			while :
			do
				clear
				cmsg $green "Download the package$x （下载整合包，减少依赖网络质量***）"
				wget -c "gitee.com/djyd/termux-ubuntu2004/releases/download/ubuntu2004/package$x.tar.gz"
				if [ ! "$?" == "0" ];then
					echo -e "$yellow下载资源失败！请检查网络再继续下载……"
					enter
				else
					tar -zxvf package$x.tar.gz && rm -rf package$x.tar.gz
					break
				fi
			done
		done
	fi
	cd "$cur"
fi


##创建目录fakethings，输入数据
mkdir -p ${folder}/proc/fakethings
if [ ! -f "${cur}/${folder}/proc/fakethings/stat" ]; then
	cat <<- EOF > "${cur}/${folder}/proc/fakethings/stat"
	cpu  5502487 1417100 4379831 62829678 354709 539972 363929 0 0 0
	cpu0 611411 171363 667442 7404799 61301 253898 205544 0 0 0
	cpu1 660993 192673 571402 7853047 39647 49434 29179 0 0 0
	cpu2 666965 186509 576296 7853110 39012 48973 26407 0 0 0
	cpu3 657630 183343 573805 7863627 38895 48768 26636 0 0 0
	cpu4 620516 161440 594973 7899146 39438 47605 26467 0 0 0
	cpu5 610849 155665 594684 7912479 40258 46870 26044 0 0 0
	cpu6 857685 92294 387182 8096756 46609 22110 12364 0 0 0
	cpu7 816434 273809 414043 7946709 49546 22311 11284 0 0 0
	intr 601715486 0 0 0 0 70612466 0 2949552 0 93228 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12862684 625329 10382717 16209 55315 8510 0 0 0 0 11 11 13 270 192 40694 95 7 0 0 0 36850 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 286 6378 0 0 0 54 0 3239423 2575191 82725 0 0 127 0 0 0 1791277 850609 20 9076504 0 301 0 0 0 0 0 3834621 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 806645 0 0 0 0 0 7243 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2445850 52 1783 0 0 5091520 0 0 0 3 0 0 0 0 0 5475 0 198001 0 2 42 1289224 0 2 202483 4 0 8390 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3563336 4202122 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 0 1 0 1 0 17948 0 0 612 0 0 0 0 2103 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 11 11 12 0 12 0 52 752 0 0 0 0 0 0 0 743 0 14 0 0 12 0 0 1863 229 0 464 0 0 0 0 0 0 8588 97 7236426 92766 622 31 0 0 0 18 4 4 0 5 0 0 116013 7 0 0 752406
	ctxt 826091808
	btime 1611513513
	processes 288493
	procs_running 1
	procs_blocked 0
	softirq 175407567 14659158 51739474 28359 5901272 8879590 0 11988166 46104015 0 36107533
	EOF
fi

if [ ! -f "${cur}/${folder}/proc/fakethings/version" ]; then
	cat <<- EOF > "${cur}/${folder}/proc/fakethings/version"
	Linux version 5.4.0-faked (andronix@fakeandroid) (gcc version 4.9.x (Andronix fake /proc/version) ) #1 SMP PREEMPT Sun Sep 13 00:00:00 IST 2020
	EOF
fi

if [ ! -f "${cur}/${folder}/proc/fakethings/vmstat" ]; then
	cat <<- EOF > "${cur}/${folder}/proc/fakethings/vmstat"
	nr_free_pages 15717
	nr_zone_inactive_anon 87325
	nr_zone_active_anon 259521
	nr_zone_inactive_file 95508
	nr_zone_active_file 57839
	nr_zone_unevictable 58867
	nr_zone_write_pending 0
	nr_mlock 58867
	nr_page_table_pages 24569
	nr_kernel_stack 49552
	nr_bounce 0
	nr_zspages 80896
	nr_free_cma 0
	nr_inactive_anon 87325
	nr_active_anon 259521
	nr_inactive_file 95508
	nr_active_file 57839
	nr_unevictable 58867
	nr_slab_reclaimable 17709
	nr_slab_unreclaimable 47418
	nr_isolated_anon 0
	nr_isolated_file 0
	workingset_refault 33002180
	workingset_activate 5498395
	workingset_restore 2354202
	workingset_nodereclaim 140006
	nr_anon_pages 344014
	nr_mapped 193745
	nr_file_pages 218441
	nr_dirty 0
	nr_writeback 0
	nr_writeback_temp 0
	nr_shmem 1880
	nr_shmem_hugepages 0
	nr_shmem_pmdmapped 0
	nr_anon_transparent_hugepages 0
	nr_unstable 0
	nr_vmscan_write 8904094
	nr_vmscan_immediate_reclaim 139732
	nr_dirtied 8470080
	nr_written 16835370
	nr_indirectly_reclaimable 8273152
	nr_unreclaimable_pages 130861
	nr_dirty_threshold 31217
	nr_dirty_background_threshold 15589
	pgpgin 198399484
	pgpgout 31742368
	pgpgoutclean 45542744
	pswpin 3843200
	pswpout 8903884
	pgalloc_dma 192884869
	pgalloc_normal 190990320
	pgalloc_movable 0
	allocstall_dma 0
	allocstall_normal 3197
	allocstall_movable 1493
	pgskip_dma 0
	pgskip_normal 0
	pgskip_movable 0
	pgfree 384653565
	pgactivate 34249517
	pgdeactivate 44271435
	pglazyfree 192
	pgfault 46133667
	pgmajfault 5568301
	pglazyfreed 0
	pgrefill 55909145
	pgsteal_kswapd 58467386
	pgsteal_direct 255950
	pgscan_kswapd 86628315
	pgscan_direct 415889
	pgscan_direct_throttle 0
	pginodesteal 18
	slabs_scanned 31242197
	kswapd_inodesteal 1238474
	kswapd_low_wmark_hit_quickly 11637
	kswapd_high_wmark_hit_quickly 5411
	pageoutrun 32167
	pgrotated 213328
	drop_pagecache 0
	drop_slab 0
	oom_kill 0
	pgmigrate_success 729722
	pgmigrate_fail 450
	compact_migrate_scanned 43510584
	compact_free_scanned 248175096
	compact_isolated 1494774
	compact_stall 6
	compact_fail 3
	compact_success 3
	compact_daemon_wake 9438
	compact_daemon_migrate_scanned 43502436
	compact_daemon_free_scanned 248107303
	unevictable_pgs_culled 66418
	unevictable_pgs_scanned 0
	unevictable_pgs_rescued 8484
	unevictable_pgs_mlocked 78830
	unevictable_pgs_munlocked 8508
	unevictable_pgs_cleared 11455
	unevictable_pgs_stranded 11455
	swap_ra 0
	swap_ra_hit 7
	speculative_pgfault 221449963
	EOF
fi

bin=start-ubuntu20.sh
	cat <<- EOM > $bin
	#!/data/data/com.termux/files/usr/bin/bash
	cd \$(dirname \$0)
	## unset LD_PRELOAD in case termux-exec is installed
	pulseaudio -k >> /dev/null 2>&1
	pulseaudio --start >> /dev/null 2>&1
	config="/data/data/com.termux/files/home/ubuntu20-fs/usr/local/bin/.config"
	##use termux-x11
	if [ -e "\$config" ];then
		source \$config
		case "\$mode" in
			"1")
				[ -z "\$(ps -ef | grep 'pulseaudio --start' | grep -v grep)" ]&& pulseaudio --start >> /dev/null 2>&1
				;;
			"2")
				export XDG_RUNTIME_DIR=\${TMPDIR}
				termux-x11 :0 -dpi \$dpi &
				;;
			"3")
				am start -n x.org.server/x.org.server.MainActivity
				sleep 10
				#pulseaudio -k >> /dev/null 2>&1
				;;
		esac
	fi
	[ -z "\$(ps -ef | grep 'pulseaudio --start' | grep -v grep)" ]&& pulseaudio --start >> /dev/null 2>&1
	unset LD_PRELOAD
	#export PROOT_NO_SECCOMP=1
	command="proot"
	command+=" --kill-on-exit"
	command+=" --link2symlink"
	command+=" -0"
	command+=" -r ubuntu20-fs"
	if [ -n "\$(ls -A ubuntu20-binds)" ]; then
	    for f in ubuntu20-binds/* ;do
	      . \$f
	    done
	fi
	command+=" -b /dev"
	command+=" -b /proc"
	command+=" -b /sys"
	command+=" -b /data"
	command+=" -b ubuntu20-fs/root:/dev/shm"
	command+=" -b /proc/self/fd/2:/dev/stderr"
	command+=" -b /proc/self/fd/1:/dev/stdout"
	command+=" -b /proc/self/fd/0:/dev/stdin"
	command+=" -b /dev/urandom:/dev/random"
	command+=" -b /proc/self/fd:/dev/fd"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/tmp:/dev/shm"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/proc/fakethings/stat:/proc/stat"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/proc/fakethings/vmstat:/proc/vmstat"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/proc/fakethings/version:/proc/version"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/proc/.uptime:/proc/uptime"
	command+=" -b /data/data/com.termux/files/home/ubuntu20-fs/proc/.loadavg:/proc/loadavg"
	command+=" -b /data/data/com.termux/files/usr/tmp:/tmp"
	## uncomment the following line to have access to the home directory of termux
	#command+=" -b /data/data/com.termux/files/home:/root"
	command+=" -b /sdcard"
	command+=" -b /storage"
	command+=" -w /root"
	command+=" /usr/bin/env -i"
	command+=" MOZ_FAKE_NO_SANDBOX=1"
	command+=" HOME=/root"
	command+=" PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/games:/usr/local/games"
	command+=" TERM=$TERM"
	#command+=" LANG=C.UTF-8"
	command+=" LANG=zh_CN.UTF-8"
	#command+=" PULSE_SERVER=tcp:127.0.0.1:4713"
	command+=" /bin/bash --login"
	com="\$@"
	if [ -z "\$1" ];then
	    exec \$command
	else
	    \$command -c "\$com"
	fi
	EOM

rm -rf ubuntu20-fs/usr/local/bin/*
touch ubuntu20-fs/proc/.uptime
touch ubuntu20-fs/proc/.loadavg
echo "127.0.0.1 localhost" > $folder/etc/hosts

echo "修复$bin的shebang"
termux-fix-shebang $bin
echo "使$bin可执行"
chmod +x $bin
echo "删除一些镜像"
cmsg $green "rm $HOME/$tarball"


touch $folder/root/.hushlogin

	##向.bash_profile写入数据🍎
	cat <<- EOF > "$HOME/$folder/root/.bash_profile"
	#!/bin/bash
	cmsg() { colour="\e[32;1m";command=\$1;echo -e "\n\e[34;1m[*]\e[0m\$colour\$command\e[0m";command \$command ;:;}  ##自定义通告颜色
	##添加用户组
	for x in \$(echo \`groups\`)
	do
		if [ "\`cat /etc/group | grep \$x\`" == "" ];then
			groupadd --gid \$x permagrp\$x
		fi
	done
	rm -rf /etc/resolv.conf
	echo "nameserver 8.8.8.8" >> /etc/resolv.conf
	
	 ##解决换源后更新失败
	#cmsg "apt install apt-transport-https ca-certificates -y"
	cmsg "apt install /var/cache/apt/archives/libssl1.1_1.1.1f-1ubuntu2.16_arm64.deb -y" 
	cmsg "apt install /var/cache/apt/archives/openssl_1.1.1f-1ubuntu2.16_arm64.deb -y" 
	cmsg "apt install /var/cache/apt/archives/apt-transport-https_2.0.9_all.deb -y" 
	cmsg "apt install /var/cache/apt/archives/ca-certificates_20211016ubuntu0.20.04.1_all.deb -y"

	cat<<-END>/etc/apt/sources.list    ##北京外国语大学
	# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
	deb https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
	# deb-src https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
	deb https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
	# deb-src https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
	deb https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
	# deb-src https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
	deb https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
	# deb-src https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
	
	# 预发布软件源，不建议启用
	# deb https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse
	# deb-src https://mirrors.bfsu.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse
	END
	
	cmsg  "apt update -y"
	cmsg  "apt-get update -y"
	cmsg  "apt install wget -y"
	cmsg  "apt install sudo -y"
	cmsg  "apt install locales language-pack-zh-hans-base language-pack-zh-hans language-pack-zh-hant-base language-pack-zh-hant -y"
	cmsg  "apt install dialog -y"
	rm -rf /etc/skel/.profile.1 /root/.profile.1
	user
	EOF
	
	##向profile写入数据🍎
	cat <<-EOF >>$HOME/$folder/root/.profile
	exit() {
        if pgrep -f tiger >/dev/null;then
                unset -f exit
                exit
        else
                pkill dbus
                pkill ssh-agent
                pkill gpg-agent
                pkill pulseaudio
                unset -f exit
                exit
        fi
	}
	EOF




#chmod +x $tarball

for x in user vnc ubuntu software test.mp3
do
	while :
	do
		#wget -c "https://raw.githubusercontent.com/WindowHZT/termux-ubuntu2004/main/usr/$x" -O "$cur/$folder/usr/local/bin/$x"
		wget -c "gitee.com/djyd/termux-ubuntu2004/raw/main/usr/$x" -O "$cur/$folder/usr/local/bin/$x"
		if [ ! "$?" == "0" ];then
			echo -e "$yellow下载资源失败！请检查网络再继续下载……"
			enter
		else
			break
		fi
	done
done

chmod +x $folder/root/.profile
chmod 770 $folder/usr/local/bin/*

echo "APT::Acquire::Retries \"3\";" > $folder/etc/apt/apt.conf.d/80-retries 
cd ~ && echo "./$bin" > .bash_profile
sed -i "s/# allow-external-apps = true/allow-external-apps = true/g" ~/.termux/termux.properties

cat <<-EOF > .bash_profile
[ "\$(pwd)" != "\$HOME" ]&&echo -e "当前目录非\$HOME默认不启动ubuntu"&&exit
cmsg() { colour=$1;command=$2;echo -e "\n$blue[*]$white$colour$command$white";command $command ;:;}  ##自定义通告颜色
echo -e "\t\t**************"
echo -e "\t\t\e[32;1m👉直接按回车  （启动ubuntu系统）\e[0m"
echo -e "\t\t\e[32;1m👉输入d回车  （删除ubuntu系统，说拜拜👋）\e[0m"
echo -e "\t\t**************"
echo -ne "\e[31;1m请在10s内决定（或输入）：\e[0m"
read -t 5 op
if [ "\$?" == "0" ];then
	if [ "\$op" == "" ];then
		termux-wake-lock && ./$bin
	elif [ "\$op" == "d" ];then
		echo -en "\n$blue[*]$white$red是否需要删除ubuntu系统? [y/n]：$white"
		read z
		if [ "\$z" == "y" ];then
			echo -en "\n$blue[*]$white$red最后确认一遍，是否删除? [y/n]：$white"
			read z
			
			if [ "\$z" == "y" ];then
			    cd \$HOME
    			kill -9 \$(ps -ef | grep "proot" | grep -v grep | awk -F " " '{print \$2}') >> /dev/null 2>&1
	    		kill -9 \$(ps -ef | grep "su" | grep -v grep | awk -F " " '{print \$2}') >> /dev/null 2>&1
		    	kill -9 \$(ps -ef | grep "dbus-daemon" | grep -v grep | awk -F " " '{print \$2}') >> /dev/null 2>&1
    			rm -rf ubuntu20-fs ubuntu20-binds .bash_profile  >> /dev/null 2>&1
	    		echo -e "\n$green已删除ubuntu系统，期待下次与你相见～$white"
	    	fi
		fi
	fi
else
	echo -e "\n选择超时，若想启动ubuntu系统也可以手动输入\e[31;1m ./start-ubuntu20.sh\e[0m 命令哦"
fi
EOF

msg $red "首次启动系统～"

bash $bin