#!/bin/bash

# Copyright (c) 2015, Bob Tidey
# All rights reserved.

# Redistribution and use, with or without modification, are permitted provided
# that the following conditions are met:
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
#    * Neither the name of the copyright holder nor the
#      names of its contributors may be used to endorse or promote products
#      derived from this software without specific prior written permission.

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Description
# This script installs a browser-interface to control the RPi Cam. It can be run
# on any Raspberry Pi with a newly installed raspbian and enabled camera-support.
# RPI_Cam_Web_Interface installer by Silvan Melchior
# Edited by jfarcher to work with github
# Edited by slabua to support custom installation folder
# Additions by btidey, miraaz, gigpi
# Rewritten and split up by Bob Tidey 

#Debug enable next 3 lines
exec 5> install.txt
BASH_XTRACEFD="5"
set -x

cd $(dirname $(readlink -f $0))

if [ $(dpkg-query -W -f='${Status}' "dialog" 2>/dev/null | grep -c "ok installed") -eq 0 ]; then
  sudo apt-get install -y dialog
fi

#Legacy support Bullseye
read -d . VERSION < /etc/debian_version
echo $VERSION
if [ $VERSION  -eq 10 ]; then
   phpversion=7.3
elif [ $VERSION -eq 11 ]; then
   phpversion=7.4
#following is done by enable legacy camera in updates raspi-config
#   sudo sed -i 's/^camera_auto_detect=1/#camera_auto_detect=1/g' /boot/config.txt
#   sudo grep -qxF 'start_x=1' /boot/config.txt || sudo sed -i '$ a start_x=1' /boot/config.txt
#   sudo grep -qxF 'gpu_mem=128' /boot/config.txt || sudo sed -i '$ a gpu_mem=128' /boot/config.txt
   sudo mkdir -p /opt/vc/bin
elif [ $VERSION -eq 12 ]; then
   phpversion=8.2
#following is done by enable legacy camera in updates raspi-config
#   sudo sed -i 's/^camera_auto_detect=1/#camera_auto_detect=1/g' /boot/config.txt
#   sudo grep -qxF 'start_x=1' /boot/config.txt || sudo sed -i '$ a start_x=1' /boot/config.txt
#   sudo grep -qxF 'gpu_mem=128' /boot/config.txt || sudo sed -i '$ a gpu_mem=128' /boot/config.txt
   sudo mkdir -p /opt/vc/bin
else
   phpversion=7.0
fi

# Terminal colors
color_red="tput setaf 1"
color_green="tput setaf 2"
color_reset="tput sgr0"

# Version stuff moved out functions as we need it more when one time.
versionfile="./www/config.php"
version=$(cat $versionfile | grep "'APP_VERSION'" | cut -d "'" -f4)
backtitle="Copyright (c) 2015, Bob Tidey. RPi Cam $version"
jpglink="no"

# Config options located in ./config.txt. In first run script makes that file for you.
if [ ! -e ./config.txt ]; then
      sudo echo "#This is config file for main installer. Put any extra options in here." > ./config.txt
      sudo echo "rpicamdir=\"html\"" >> ./config.txt
      sudo echo "webserver=\"apache\"" >> ./config.txt
      sudo echo "webport=\"80\"" >> ./config.txt
      sudo echo "user=\"\"" >> ./config.txt
      sudo echo "webpasswd=\"\"" >> ./config.txt
      sudo echo "autostart=\"yes\"" >> ./config.txt
      sudo echo "jpglink=\"no\"" >> ./config.txt
      sudo echo "phpversion=\"$phpversion\"" >> ./config.txt
      sudo echo "" >> ./config.txt
      sudo chmod 664 ./config.txt
fi

source ./config.txt
rpicamdirold=$rpicamdir
if [ ! "${rpicamdirold:0:1}" == "" ]; then
   rpicamdirold=/$rpicamdirold
fi


#Allow for a quiet install
rm exitfile.txt >/dev/null 2>&1
if [ $# -eq 0 ] || [ "$1" != "q" ]; then
   exec 3>&1
   dialog                                         \
   --separate-widget $'\n'                        \
   --title "Configuration Options"    \
   --backtitle "$backtitle"					   \
   --form ""                                      \
   0 0 0                                          \
   "Cam subfolder:"        1 1   "$rpicamdir"   1 32 15 0  \
   "Autostart:(yes/no)"    2 1   "$autostart"   2 32 15 0  \
   "Server:(apache/nginx/lighttpd)" 3 1   "$webserver"   3 32 15 0  \
   "Webport:"              4 1   "$webport"     4 32 15 0  \
   "User:(blank=nologin)"  5 1   "$user"        5 32 15 0  \
   "Password:"             6 1   "$webpasswd"   6 32 15 0  \
   "jpglink:(yes/no)"      7 1   "$jpglink"     7 32 15 0  \
   "php:(stretch 7.0,buster 7.3)"           8 1   "$phpversion"  8 32 15 0  \
   2>&1 1>&3 | {
      read -r rpicamdir
      read -r autostart
      read -r webserver
      read -r webport
      read -r user
      read -r webpasswd
	  read -r jpglink
	  read -r phpversion
   if [ -n "$webport" ]; then
      sudo echo "#This is edited config file for main installer. Put any extra options in here." > ./config.txt
      sudo echo "rpicamdir=\"$rpicamdir\"" >> ./config.txt
      sudo echo "webserver=\"$webserver\"" >> ./config.txt
      sudo echo "webport=\"$webport\"" >> ./config.txt
      sudo echo "user=\"$user\"" >> ./config.txt
      sudo echo "webpasswd=\"$webpasswd\"" >> ./config.txt
      sudo echo "autostart=\"$autostart\"" >> ./config.txt
      sudo echo "jpglink=\"$jpglink\"" >> ./config.txt
      sudo echo "phpversion=\"$phpversion\"" >> ./config.txt
      sudo echo "" >> ./config.txt
   else
      echo "exit" > ./exitfile.txt
   fi
   }
   exec 3>&-

   if [ -e exitfile.txt ]; then
      rm exitfile.txt
      exit
   fi

   source ./config.txt
fi

if [ ! "${rpicamdir:0:1}" == "" ]; then
   rpicamdir=/$rpicamdir
   rpicamdirEsc=${rpicamdir//\//\\\/}
else
   rpicamdirEsc=""
fi

fn_stop ()
{ # This is function stop
        sudo killall raspimjpeg 2>/dev/null
        sudo killall php 2>/dev/null
        sudo killall motion 2>/dev/null
}

fn_reboot ()
{ # This is function reboot system
  dialog --title "Start camera system now" --backtitle "$backtitle" --yesno "Start now?" 5 33
  response=$?
    case $response in
      0) ./start.sh;;
      1) dialog --title 'Start or Reboot message' --colors --infobox "\Zb\Z1"'Manually run ./start.sh or reboot!' 4 28 ; sleep 2;;
      255) dialog --title 'Start or Reboot message' --colors --infobox "\Zb\Z1"'Manually run ./start.sh or reboot!' 4 28 ; sleep 2;;
    esac
}


fn_apache ()
{
aconf="etc/apache2/sites-available/raspicam.conf"
cp $aconf.1 $aconf
if [ -e "\/$aconf" ]; then
   sudo rm "\/$aconf"
fi
if [ -e /etc/apache2/conf-available/other-vhosts-access-log.conf ]; then
   aotherlog="/etc/apache2/conf-available/other-vhosts-access-log.conf"
else
   aotherlog="/etc/apache2/conf.d/other-vhosts-access-log"
fi
tmpfile=$(mktemp)
sudo awk '/NameVirtualHost \*:/{c+=1}{if(c==1){sub("NameVirtualHost \\*:.*","NameVirtualHost *:'$webport'",$0)};print}' /etc/apache2/ports.conf > "$tmpfile" && sudo mv "$tmpfile" /etc/apache2/ports.conf
sudo awk '/Listen/{c+=1}{if(c==1){sub("Listen.*","Listen '$webport'",$0)};print}' /etc/apache2/ports.conf > "$tmpfile" && sudo mv "$tmpfile" /etc/apache2/ports.conf
sudo awk '/<VirtualHost \*:/{c+=1}{if(c==1){sub("<VirtualHost \\*:.*","<VirtualHost *:'$webport'>",$0)};print}' $aconf > "$tmpfile" && sudo mv "$tmpfile" $aconf
sudo sed -i "s/<Directory\ \/var\/www\/.*/<Directory\ \/var\/www$rpicamdirEsc>/g" $aconf
if [ "$user" == "" ]; then
	sudo sed -i "s/AllowOverride\ .*/AllowOverride None/g" $aconf
else
   if [ ! -e /usr/local/.htpasswd ]; then
      sudo htpasswd -b -B -c /usr/local/.htpasswd $user $webpasswd
   fi
   sudo htpasswd -b -B /usr/local/.htpasswd $user $webpasswd
   sudo sed -i "s/AllowOverride\ .*/AllowOverride All/g" $aconf
   if [ ! -e /var/www$rpicamdir/.htaccess ]; then
      sudo bash -c "cat > /var/www$rpicamdir/.htaccess" << EOF
AuthName "RPi Cam Web Interface Restricted Area"
AuthType Basic
AuthUserFile /usr/local/.htpasswd
Require valid-user
EOF
      sudo chown -R www-data:www-data /var/www$rpicamdir/.htaccess
   fi
fi
sudo mv $aconf /$aconf
if [ ! -e /etc/apache2/sites-enabled/raspicam.conf ]; then
   sudo ln -sf /$aconf /etc/apache2/sites-enabled/raspicam.conf
fi
sudo sed -i 's/^CustomLog/#CustomLog/g' $aotherlog
sudo a2dissite 000-default.conf >/dev/null 2>&1
sudo service apache2 restart
}

fn_nginx ()
{
aconf="etc/nginx/sites-available/rpicam"
cp $aconf.1 $aconf
if [ -e "\/$aconf" ]; then
   sudo rm "\/$aconf"
fi
#uncomment next line if wishing to always access by http://ip as the root
#sudo sed -i "s:root /var/www;:root /var/www$rpicamdirEsc;:g" $aconf 
sudo mv /etc/nginx/sites-available/*default* etc/nginx/sites-available/ >/dev/null 2>&1
#remove link file as nginx now errors if link invalid
sudo rm /etc/nginx/sites-enabled/*default* >/dev/null 2>&1

if [ "$user" == "" ]; then
   sed -i "s/auth_basic\ .*/auth_basic \"Off\";/g" $aconf
   sed -i "s/\ auth_basic_user_file/#auth_basic_user_file/g" $aconf
else
   sudo htpasswd -b -c /usr/local/.htpasswd $user $webpasswd
   sed -i "s/auth_basic\ .*/auth_basic \"Restricted\";/g" $aconf
   sed -i "s/#auth_basic_user_file/\ auth_basic_user_file/g" $aconf
fi
if [[ "$phpversion" == "7.4" ]]; then
   sed -i "s/\/var\/run\/php5-fpm\.sock;/\/run\/php\/php7.4-fpm\.sock;/g" $aconf
elif [[ "$phpversion" == "7.3" ]]; then
   sed -i "s/\/var\/run\/php5-fpm\.sock;/\/run\/php\/php7.3-fpm\.sock;/g" $aconf
fi
sudo sed -i -E "s/(listen.+?)80/\1$webport/g" $aconf
# following line sets root url to direct subfolder. This is inconsistent with other usage.
#sudo sed -i -E "s/root \/var\/www/root \/var\/www$rpicamdirEsc/" $aconf
sudo mv $aconf /$aconf
sudo chmod 644 /$aconf
if [ ! -e /etc/nginx/sites-enabled/rpicam ]; then
   sudo ln -sf /$aconf /etc/nginx/sites-enabled/rpicam
fi

# Update nginx main config file
sudo sed -i "s/worker_processes 4;/worker_processes 2;/g" /etc/nginx/nginx.conf
sudo sed -i "s/worker_connections 768;/worker_connections 128;/g" /etc/nginx/nginx.conf
sudo sed -i "s/gzip on;/gzip off;/g" /etc/nginx/nginx.conf
if [ "$NGINX_DISABLE_LOGGING" != "" ]; then
   sudo sed -i "s:access_log /var/log/nginx/nginx/access.log;:access_log /dev/null;:g" /etc/nginx/nginx.conf
fi

# Configure php-apc
if [[ "$phpversion" == "7.3" ]]; then
	phpnv=/etc/php/7.3
else
	phpnv=/etc/php/$phpversion
fi
sudo sh -c "echo \"cgi.fix_pathinfo = 0;\" >> $phpnv/fpm/php.ini"
sudo mkdir $phpnv/conf.d >/dev/null 2>&1
sudo cp etc/php5/apc.ini $phpnv/conf.d/20-apc.ini
sudo chmod 644 $phpnv/conf.d/20-apc.ini
sudo service nginx restart
}

fn_lighttpd ()
{
sudo lighty-enable-mod fastcgi-php
sudo sed -i "s/^server.document-root.*/server.document-root  = \"\/var\/www$rpicamdirEsc\"/g" /etc/lighttpd/lighttpd.conf
sudo sed -i "s/^server.port.*/server.port  = $webport/g" /etc/lighttpd/lighttpd.conf
#sudo service lighttpd restart  
sudo /etc/init.d/lighttpd force-reload
 }

fn_motion ()
{
sudo sed -i "s/^daemon.*/daemon on/g" /etc/motion/motion.conf		
sudo sed -i "s/^logfile.*/;logfile \/tmp\/motion.log /g" /etc/motion/motion.conf		
sudo sed -i "s/^; netcam_url.*/netcam_url/g" /etc/motion/motion.conf		
sudo sed -i "s/^netcam_url.*/netcam_url http:\/\/localhost:$webport$rpicamdirEsc\/cam_pic.php/g" /etc/motion/motion.conf		
if [ "$user" == "" ]; then
   sudo sed -i "s/^netcam_userpass.*/; netcam_userpass value/g" /etc/motion/motion.conf		
else
   sudo sed -i "s/^; netcam_userpass.*/netcam_userpass/g" /etc/motion/motion.conf		
   sudo sed -i "s/^netcam_userpass.*/netcam_userpass $user:$webpasswd/g" /etc/motion/motion.conf		
fi
sudo sed -i "s/^; on_event_start.*/on_event_start/g" /etc/motion/motion.conf		
sudo sed -i "s/^on_event_start.*/on_event_start echo -n \'1\' >\/var\/www$rpicamdirEsc\/FIFO1/g" /etc/motion/motion.conf		
sudo sed -i "s/^; on_event_end.*/on_event_end/g" /etc/motion/motion.conf		
sudo sed -i "s/^on_event_end.*/on_event_end echo -n \'0\' >\/var\/www$rpicamdirEsc\/FIFO1/g" /etc/motion/motion.conf		
sudo sed -i "s/control_port.*/control_port 6642/g" /etc/motion/motion.conf		
sudo sed -i "s/control_html_output.*/control_html_output off/g" /etc/motion/motion.conf		
sudo sed -i "s/^output_pictures.*/output_pictures off/g" /etc/motion/motion.conf		
sudo sed -i "s/^ffmpeg_output_movies on/ffmpeg_output_movies off/g" /etc/motion/motion.conf		
sudo sed -i "s/^ffmpeg_cap_new on/ffmpeg_cap_new off/g" /etc/motion/motion.conf		
sudo sed -i "s/^stream_port.*/stream_port 0/g" /etc/motion/motion.conf		
sudo sed -i "s/^webcam_port.*/webcam_port 0/g" /etc/motion/motion.conf		
sudo sed -i "s/^process_id_file/; process_id_file/g" /etc/motion/motion.conf
sudo sed -i "s/^videodevice/; videodevice/g" /etc/motion/motion.conf
sudo sed -i "s/^event_gap 60/event_gap 3/g" /etc/motion/motion.conf
sudo chown motion:www-data /etc/motion/motion.conf
sudo chmod 664 /etc/motion/motion.conf
}

fn_autostart ()
{
tmpfile=$(mktemp)
sudo sed '/#START/,/#END/d' /etc/rc.local > "$tmpfile" && sudo mv "$tmpfile" /etc/rc.local
# Remove to growing plank lines.
sudo awk '!NF {if (++n <= 1) print; next}; {n=0;print}' /etc/rc.local > "$tmpfile" && sudo mv "$tmpfile" /etc/rc.local
if [ "$autostart" == "yes" ]; then
   if ! grep -Fq '#START RASPIMJPEG SECTION' /etc/rc.local; then
      sudo sed -i '/exit 0/d' /etc/rc.local
      sudo bash -c "cat >> /etc/rc.local" << EOF
#START RASPIMJPEG SECTION
mkdir -p /dev/shm/mjpeg
chown www-data:www-data /dev/shm/mjpeg
chmod 777 /dev/shm/mjpeg
sleep 4;su -c 'raspimjpeg > /dev/null 2>&1 &' www-data
if [ -e /etc/debian_version ]; then
  sleep 4;su -c 'php /var/www$rpicamdir/schedule.php > /dev/null 2>&1 &' www-data
else
  sleep 4;su -s '/bin/bash' -c 'php /var/www$rpicamdir/schedule.php > /dev/null 2>&1 &' www-data
fi
#END RASPIMJPEG SECTION

exit 0
EOF
   else
      tmpfile=$(mktemp)
      sudo sed '/#START/,/#END/d' /etc/rc.local > "$tmpfile" && sudo mv "$tmpfile" /etc/rc.local
      # Remove to growing plank lines.
      sudo awk '!NF {if (++n <= 1) print; next}; {n=0;print}' /etc/rc.local > "$tmpfile" && sudo mv "$tmpfile" /etc/rc.local
   fi

fi
sudo chown root:root /etc/rc.local
sudo chmod 755 /etc/rc.local
}

#Main install)
fn_stop

sudo mkdir -p /var/www$rpicamdir/media
#move old material if changing from a different install folder
if [ ! "$rpicamdir" == "$rpicamdirold" ]; then
   if [ -e /var/www$rpicamdirold/index.php ]; then
      sudo mv /var/www$rpicamdirold/* /var/www$rpicamdir
   fi
fi

sudo cp -r www/* /var/www$rpicamdir/
if [ -e /var/www$rpicamdir/index.html ]; then
   sudo rm /var/www$rpicamdir/index.html
fi

if [[ "$phpversion" == "7.3" ]]; then
   phpv=php7.3
else
   phpv=php$phpversion
fi

if [ "$webserver" == "apache" ]; then
   sudo apt-get install -y apache2 $phpv $phpv-cli libapache2-mod-$phpv gpac motion zip gstreamer1.0-tools
   if [ $? -ne 0 ]; then exit; fi
   fn_apache
elif [ "$webserver" == "nginx" ]; then
   sudo apt-get install -y nginx $phpv-fpm $phpv-cli $phpv-common php-apcu apache2-utils gpac motion zip gstreamer1.0-tools
   if [ $? -ne 0 ]; then exit; fi
   fn_nginx
elif [ "$webserver" == "lighttpd" ]; then
   sudo apt-get install -y  lighttpd $phpv-cli $phpv-common $phpv-cgi $phpv gpac motion zip gstreamer1.0-tools
   if [ $? -ne 0 ]; then exit; fi
   fn_lighttpd
fi

#Make sure user www-data has bash shell
sudo sed -i "s/^www-data:x.*/www-data:x:33:33:www-data:\/var\/www:\/bin\/bash/g" /etc/passwd

if [ ! -e /var/www$rpicamdir/FIFO ]; then
   sudo mknod /var/www$rpicamdir/FIFO p
fi
sudo chmod 666 /var/www$rpicamdir/FIFO

if [ ! -e /var/www$rpicamdir/FIFO11 ]; then
   sudo mknod /var/www$rpicamdir/FIFO11 p
fi
sudo chmod 666 /var/www$rpicamdir/FIFO11

if [ ! -e /var/www$rpicamdir/FIFO1 ]; then
   sudo mknod /var/www$rpicamdir/FIFO1 p
fi

sudo chmod 666 /var/www$rpicamdir/FIFO1

if [ ! -d /dev/shm/mjpeg ]; then
   mkdir /dev/shm/mjpeg
fi

if [ "$jpglink" == "yes" ]; then
	if [ ! -e /var/www$rpicamdir/cam.jpg ]; then
	   sudo ln -sf /dev/shm/mjpeg/cam.jpg /var/www$rpicamdir/cam.jpg
	fi
fi

if [ -e /var/www$rpicamdir/status_mjpeg.txt ]; then
   sudo rm /var/www$rpicamdir/status_mjpeg.txt
fi
if [ ! -e /dev/shm/mjpeg/status_mjpeg.txt ]; then
   echo -n 'halted' > /dev/shm/mjpeg/status_mjpeg.txt
fi
sudo chown www-data:www-data /dev/shm/mjpeg/status_mjpeg.txt
sudo ln -sf /dev/shm/mjpeg/status_mjpeg.txt /var/www$rpicamdir/status_mjpeg.txt

sudo chown -R www-data:www-data /var/www$rpicamdir
sudo cp etc/sudoers.d/RPI_Cam_Web_Interface /etc/sudoers.d/
sudo chmod 440 /etc/sudoers.d/RPI_Cam_Web_Interface

sudo cp -r bin/raspimjpeg /opt/vc/bin/
sudo chmod 755 /opt/vc/bin/raspimjpeg
if [ ! -e /usr/bin/raspimjpeg ]; then
   sudo ln -s /opt/vc/bin/raspimjpeg /usr/bin/raspimjpeg
fi

sed -e "s/www/www$rpicamdirEsc/" etc/raspimjpeg/raspimjpeg.1 > etc/raspimjpeg/raspimjpeg
if [[ `cat /proc/cmdline |awk -v RS=' ' -F= '/boardrev/ { print $2 }'` == "0x11" ]]; then
   sed -i 's/^camera_num 0/camera_num 1/g' etc/raspimjpeg/raspimjpeg
fi
if [ -e /etc/raspimjpeg ]; then
   $color_green; echo "Your custom raspimjpg backed up at /etc/raspimjpeg.bak"; $color_reset
   sudo cp -r /etc/raspimjpeg /etc/raspimjpeg.bak
fi
sudo cp -r etc/raspimjpeg/raspimjpeg /etc/
sudo chmod 644 /etc/raspimjpeg
if [ ! -e /var/www$rpicamdir/raspimjpeg ]; then
   sudo ln -s /etc/raspimjpeg /var/www$rpicamdir/raspimjpeg
fi

sudo usermod -a -G video www-data
if [ -e /var/www$rpicamdir/uconfig ]; then
   sudo chown www-data:www-data /var/www$rpicamdir/uconfig
fi

fn_motion
fn_autostart

if [ -e /var/www$rpicamdir/uconfig ]; then
   sudo chown www-data:www-data /var/www$rpicamdir/uconfig
fi

if [ -e /var/www$rpicamdir/schedule.php ]; then
   sudo rm /var/www$rpicamdir/schedule.php
fi

sudo sed -e "s/www/www$rpicamdirEsc/g" www/schedule.php > www/schedule.php.1
sudo mv www/schedule.php.1 /var/www$rpicamdir/schedule.php
sudo chown www-data:www-data /var/www$rpicamdir/schedule.php

if [ $# -eq 0 ] || [ "$1" != "q" ]; then
   fn_reboot
fi