installer.sh

   1 #!/bin/bash
   2
   3 ##Print splash
   4 echo '**********************************'
   5 echo '**SVR.JS installer for GNU/Linux**'
   6 echo '**********************************'
   7 echo
   8
   9 ##Check if user is root
  10 if [ "$(id -u)" != "0" ]; then
  11   echo 'You need to have root privileges to install SVR.JS'
  12   exit 1
  13 fi
  14
  15 ##Determine the OS
  16 OS="$(uname -s)"
  17 if [ "$OS" == "Linux" ]; then
  18   if [ -f /etc/redhat-release ] ; then
  19     DISTRO=rhel
  20   elif [ -f /etc/SuSE-release ] ; then
  21     DISTRO=suse
  22   elif [ -f /etc/debian_version ] ; then
  23     DISTRO=debian
  24   elif [ -f /etc/arch-release ] ; then
  25     DISTRO=arch
  26   else
  27     DISTRO=other
  28   fi
  29 elif [ "$OS" == "FreeBSD" ]; then
  30   DISTRO=freebsd
  31 else
  32   DISTRO=other
  33 fi
  34
  35 ##Define depedency installation functions
  36 install_nodejs() {
  37   case "$DISTRO" in
  38     "debian") apt install nodejs;;
  39     "rhel") yum install nodejs;;
  40     "suse") zypper install nodejs;;
  41     "arch") pacman -S nodejs;;
  42     "freebsd") pkg install node;;
  43     *) echo "You need to install Node.JS manually"
  44   esac
  45 }
  46
  47 install_unzip() {
  48   case "$DISTRO" in
  49     "debian") apt install unzip;;
  50     "rhel") yum install unzip;;
  51     "suse") zypper install unzip;;
  52     "arch") pacman -S unzip;;
  53     "freebsd") pkg install unzip;;
  54     *) echo "You need to install unzip manually"
  55   esac
  56 }
  57
  58 install_setcap() {
  59   case "$DISTRO" in
  60     "debian") apt install libcap2-bin;;
  61     "rhel") yum install libcap;;
  62     "suse") zypper install libcap-progs;;
  63     "arch") pacman -S libcap;;
  64     "freebsd") echo "Your OS doesn't support setcap";;
  65     *) echo "You need to install setcap manually"
  66   esac
  67 }
  68
  69 ##Select SVR.JS installation type
  70 echo 'Select your SVR.JS installation type. Valid SVR.JS installation types:'
  71 echo '0 - Latest stable version'
  72 echo '1 - Latest LTS version'
  73 echo '2 - Install and update manually'
  74 echo -n 'Your SVR.JS installation type: '
  75 read ITP
  76 case $ITP in
  77   0) INSTALLTYPE=stable;;
  78   1) INSTALLTYPE=lts;;
  79   2) INSTALLTYPE=manual;;
  80   *) echo 'Invalid SVR.JS installation type!'; exit 1;;
  81 esac
  82
  83 if [ "$INSTALLTYPE" == "manual" ]; then
  84   echo -n 'Path to SVR.JS zip archive: '
  85   read SVRJSZIPARCHIVE
  86 elif [ "$INSTALLTYPE" == "stable" ]; then
  87   SVRJSVERSION="$(curl -fsL https://downloads.svrjs.org/latest.svrjs)"
  88   if [ "$SVRJSVERSION" == "" ]; then
  89     echo 'There was a problem while determining latest SVR.JS version!'
  90     exit 1
  91   fi
  92   SVRJSZIPARCHIVE="$(mktemp /tmp/svrjs.XXXXX.zip)"
  93   if ! curl -fsSL "https://downloads.svrjs.org/svr.js.$SVRJSVERSION.zip" > $SVRJSZIPARCHIVE; then
  94     echo 'There was a problem while downloading latest SVR.JS version!'
  95     exit 1
  96   fi
  97 elif [ "$INSTALLTYPE" == "lts" ]; then
  98   SVRJSVERSION="$(curl -fsL https://downloads.svrjs.org/latest-lts.svrjs)"
  99   if [ "$SVRJSVERSION" == "" ]; then
 100     echo 'There was a problem while determining latest LTS SVR.JS version!'
 101     exit 1
 102   fi
 103   SVRJSZIPARCHIVE="$(mktemp /tmp/svrjs.XXXXX.zip)"
 104   if ! curl -fsSL "https://downloads.svrjs.org/svr.js.$SVRJSVERSION.zip" > $SVRJSZIPARCHIVE; then
 105     echo 'There was a problem while downloading latest LTS SVR.JS version!'
 106     exit 1
 107   fi
 108 else
 109   echo 'There was a problem determining SVR.JS installation type!'
 110   exit 1
 111 fi
 112
 113 ##Check if SVR.JS zip archive exists
 114 if ! [ -f $SVRJSZIPARCHIVE ]; then
 115   echo 'Can'"'"'t find SVR.JS archive! Make sure to download SVR.JS archive file from https://svrjs.org and rename it to "svrjs.zip".'
 116   exit 1
 117 fi
 118
 119 ##Check if unzip is installed
 120 echo "Checking for unzip..."
 121 unziputil=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f unzip | awk '{ print $2}' | xargs)
 122 if [ "$unziputil" == "" ]; then
 123   install_unzip #Install unzip
 124 fi
 125 unziputil=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f unzip | awk '{ print $2}' | xargs)
 126 if [ "$unziputil" == "" ]; then
 127   echo 'Can'"'"'t locate unzip!'
 128   exit 1
 129 fi
 130
 131 ##Check if Node.JS is installed
 132 echo "Checking for Node.JS..."
 133 nodejs=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f node | awk '{ print $2}' | xargs)
 134 if [ "$nodejs" == "" ]; then
 135   install_nodejs #Install Node.JS
 136 fi
 137 nodejs=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f node | awk '{ print $2}' | xargs)
 138 if [ "$nodejs" == "" ]; then
 139   echo 'Can'"'"'t locate Node.JS!'
 140   exit 1
 141 fi
 142
 143 ##Check if setcap is installed
 144 echo "Checking for setcap..."
 145 setcapis=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f setcap | awk '{ print $2}' | xargs)
 146 if [ "$setcapis" == "" ]; then
 147   install_setcap #Install Node.JS
 148 fi
 149 setcapis=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f setcap | awk '{ print $2}' | xargs)
 150 if [ "$setcapis" == "" ]; then
 151   echo 'Can'"'"'t locate setcap, you need to grant networking permissions manually'
 152 else
 153   ##Grant networking permissions to Node.JS
 154   echo "Granting networking permissions..."
 155   sudo setcap cap_net_bind_service=+ep $nodejs
 156 fi
 157
 158 ##Copy SVR.JS files
 159 echo "Copying SVR.JS files..."
 160 mkdir /usr/lib/svrjs
 161 echo $INSTALLTYPE > /usr/lib/svrjs/.installer.prop;
 162 if [ "$SVRJSVERSION" != "" ]; then
 163   echo "$SVRJSVERSION" > /usr/lib/svrjs/.installer.version
 164 fi
 165 unzip $SVRJSZIPARCHIVE -d /usr/lib/svrjs > /dev/null
 166 pushd .
 167 cd /usr/lib/svrjs
 168 node svr.js > /dev/null
 169 popd
 170 ln -s /usr/lib/svrjs/log /var/log/svrjs
 171 ln -s /usr/lib/svrjs/config.json /etc/svrjs-config.json
 172 node -e 'var fs=require("fs"),config=JSON.parse(fs.readFileSync("/usr/lib/svrjs/config.json").toString());config.wwwroot="/var/www/svrjs",fs.writeFileSync("/usr/lib/svrjs/config.json",JSON.stringify(config));' > /dev/null
 173 mkdir -p /var/www/svrjs
 174 mv /usr/lib/svrjs/index.html /var/www/svrjs
 175 mv /usr/lib/svrjs/tests.html /var/www/svrjs
 176 mv /usr/lib/svrjs/licenses /var/www/svrjs
 177 mv /usr/lib/svrjs/testdir /var/www/svrjs
 178 mv /usr/lib/svrjs/serverSideScript.js /var/www/svrjs
 179 mv /usr/lib/svrjs/logo.png /var/www/svrjs
 180 mv /usr/lib/svrjs/powered.png /var/www/svrjs
 181 mv /usr/lib/svrjs/favicon.ico /var/www/svrjs 2>/dev/null
 182 mv /usr/lib/svrjs/views.txt /var/www/svrjs 2>/dev/null
 183 mv /usr/lib/svrjs/hviews.txt /var/www/svrjs 2>/dev/null
 184 cp -R /usr/lib/svrjs/.dirimages /var/www/svrjs
 185
 186 ##Install SVR.JS utilities
 187 echo "Installing SVR.JS utilities..."
 188 echo '#!/bin/bash' > /tmp/svrjs-utiltemplate
 189 echo 'PARAMETERS=$(printf "%q " "$@")' >> /tmp/svrjs-utiltemplate
 190 echo >> /tmp/svrjs-utiltemplate
 191 echo 'if [ "$PARAMETERS" == "'"'""'"' " ]; then' >> /tmp/svrjs-utiltemplate
 192 echo '  PARAMETERS=""' >> /tmp/svrjs-utiltemplate
 193 echo 'fi' >> /tmp/svrjs-utiltemplate
 194 echo >> /tmp/svrjs-utiltemplate
 195 echo 'cd /usr/lib/svrjs' >> /tmp/svrjs-utiltemplate
 196 cp /tmp/svrjs-utiltemplate /usr/bin/svrjs-loghighlight
 197 echo 'node loghighlight.js $PARAMETERS' >> /usr/bin/svrjs-loghighlight
 198 chmod a+x /usr/bin/svrjs-loghighlight
 199 cp /tmp/svrjs-utiltemplate /usr/bin/svrjs-logviewer
 200 echo 'node logviewer.js $PARAMETERS' >> /usr/bin/svrjs-logviewer
 201 chmod a+x /usr/bin/svrjs-logviewer
 202 cp /tmp/svrjs-utiltemplate /usr/bin/svrpasswd
 203 echo 'node svrpasswd.js $PARAMETERS' >> /usr/bin/svrpasswd
 204 chmod a+x /usr/bin/svrpasswd
 205 cp /tmp/svrjs-utiltemplate /usr/bin/svrjs
 206 echo 'node svr.js $PARAMETERS' >> /usr/bin/svrjs
 207 chmod a+x /usr/bin/svrjs
 208 cat > /usr/bin/svrjs-updater << 'EOF'
 209 #!/bin/bash
 210
 211 ##Print splash
 212 echo '********************************'
 213 echo '**SVR.JS updater for GNU/Linux**'
 214 echo '********************************'
 215 echo
 216
 217 ##Check if user is root
 218 if [ "$(id -u)" != "0" ]; then
 219   echo 'You need to have root privileges to update SVR.JS'
 220   exit 1
 221 fi
 222
 223 ##Check if SVR.JS is installed
 224 if ! [ -d /usr/lib/svrjs ]; then
 225   echo 'SVR.JS isn'"'"'t installed (or it'"'"'s installed without using SVR.JS installer)!'
 226   exit 1
 227 fi
 228
 229 ##Create .installer.prop file, if it doesn't exist
 230 if ! [ -f /usr/lib/svrjs/.installer.prop ]; then
 231   echo manual > /usr/lib/svrjs/.installer.prop;
 232 fi
 233
 234 ##Check the SVR.JS installation type
 235 INSTALLTYPE="$(cat /usr/lib/svrjs/.installer.prop)"
 236 if [ "$INSTALLTYPE" == "manual" ]; then
 237   echo -n 'Path to SVR.JS zip archive: '
 238   read SVRJSZIPARCHIVE
 239 elif [ "$INSTALLTYPE" == "stable" ]; then
 240   SVRJSOLDVERSION=""
 241   SVRJSVERSION="$(curl -fsL https://downloads.svrjs.org/latest.svrjs)"
 242   if [ "$SVRJSVERSION" == "" ]; then
 243     echo 'There was a problem while determining latest SVR.JS version!'
 244     exit 1
 245   fi
 246   if [ -f /usr/lib/svrjs/.installer.version ]; then
 247     SVRJSOLDVERSION="$(cat /usr/lib/svrjs/.installer.version)"
 248   fi
 249   if [ "$SVRJSOLDVERSION" == "$SVRJSVERSION" ]; then
 250     echo 'Your SVR.JS version is up to date!'
 251     exit 0
 252   fi
 253   SVRJSZIPARCHIVE="$(mktemp /tmp/svrjs.XXXXX.zip)"
 254   if ! curl -fsSL "https://downloads.svrjs.org/svr.js.$SVRJSVERSION.zip" > $SVRJSZIPARCHIVE; then
 255     echo 'There was a problem while downloading latest SVR.JS version!'
 256     exit 1
 257   fi
 258   echo "$SVRJSVERSION" > /usr/lib/svrjs/.installer.version
 259 elif [ "$INSTALLTYPE" == "lts" ]; then
 260   SVRJSOLDVERSION=""
 261   SVRJSVERSION="$(curl -fsL https://downloads.svrjs.org/latest-lts.svrjs)"
 262   if [ "$SVRJSVERSION" == "" ]; then
 263     echo 'There was a problem while determining latest LTS SVR.JS version!'
 264     exit 1
 265   fi
 266   if [ -f /usr/lib/svrjs/.installer.version ]; then
 267     SVRJSOLDVERSION="$(cat /usr/lib/svrjs/.installer.version)"
 268   fi
 269   if [ "$SVRJSOLDVERSION" == "$SVRJSVERSION" ]; then
 270     echo 'Your SVR.JS version is up to date!'
 271     exit 0
 272   fi
 273   SVRJSZIPARCHIVE="$(mktemp /tmp/svrjs.XXXXX.zip)"
 274   if ! curl -fsSL "https://downloads.svrjs.org/svr.js.$SVRJSVERSION.zip" > $SVRJSZIPARCHIVE; then
 275     echo 'There was a problem while downloading latest LTS SVR.JS version!'
 276     exit 1
 277   fi
 278   echo "$SVRJSVERSION" > /usr/lib/svrjs/.installer.version
 279 else
 280   echo 'There was a problem determining SVR.JS installation type!'
 281   exit 1
 282 fi
 283
 284 ##Check if SVR.JS zip archive exists
 285 if ! [ -f $SVRJSZIPARCHIVE ]; then
 286   echo 'Can'"'"'t find SVR.JS archive! Make sure to download SVR.JS archive file from https://svrjs.org and rename it to "svrjs.zip".'
 287   exit 1
 288 fi
 289
 290 ##Copy SVR.JS files
 291 echo "Copying SVR.JS files..."
 292 unzip -o $SVRJSZIPARCHIVE -d /usr/lib/svrjs svr.compressed modules.compressed svr.js > /dev/null
 293 chown svrjs:svrjs /usr/lib/svrjs/svr.compressed /usr/lib/svrjs/modules.compressed /usr/lib/svrjs/svr.js
 294 chmod 775 /usr/lib/svrjs/svr.compressed /usr/lib/svrjs/modules.compressed /usr/lib/svrjs/svr.js
 295 unzip -o $SVRJSZIPARCHIVE -d /usr/lib/svrjs logviewer.js loghighlight.js > /dev/null
 296 chown svrjs:svrjs /usr/lib/svrjs/logviewer.js /usr/lib/svrjs/loghighlight.js
 297 chmod 775 /usr/lib/svrjs/logviewer.js /usr/lib/svrjs/loghighlight.js
 298 unzip -o $SVRJSZIPARCHIVE -d /usr/lib/svrjs svrpasswd.js > /dev/null
 299 chown svrjs:svrjs /usr/lib/svrjs/svrpasswd.js
 300 chmod 775 /usr/lib/svrjs/svrpasswd.js
 301 pushd .
 302 cd /usr/lib/svrjs
 303 node svr.js > /dev/null
 304 popd
 305
 306 echo "Done! SVR.JS is updated successfully! You can now restart SVR.JS using \"/etc/init.d/svrjs restart\" or \"systemctl restart svrjs\"."
 307 EOF
 308 chmod a+x /usr/bin/svrjs-updater
 309
 310 ##Create user for running SVR.JS and assign permissions of files
 311 echo "Creating user for running SVR.JS..."
 312 useradd -r -d /usr/lib/svrjs svrjs
 313 echo "Assigning SVR.JS permissions..."
 314 chown -hR svrjs:svrjs /usr/lib/svrjs
 315 chown -hR svrjs:svrjs /var/log/svrjs
 316 chown -hR svrjs:svrjs /var/www/svrjs
 317 find /usr/lib/svrjs -type d -exec chmod 755 {} \;
 318 find /usr/lib/svrjs -type f -exec chmod 644 {} \;
 319 find /var/log/svrjs -type d -exec chmod 755 {} \;
 320 find /var/log/svrjs -type f -exec chmod 644 {} \;
 321 find /var/www/svrjs -type d -exec chmod 755 {} \;
 322 find /var/www/svrjs -type f -exec chmod 644 {} \;
 323
 324 ##Install SVR.JS service
 325 echo "Installing SVR.JS service..."
 326 systemddetect=$(whereis -b -B $(echo $PATH | sed 's|:| |g') -f systemctl | awk '{ print $2}' | xargs)
 327 if [ "$systemddetect" == "" ]; then
 328   echo '#!/bin/bash' > /etc/init.d/svrjs
 329   echo '### BEGIN INIT INFO' >> /etc/init.d/svrjs
 330   echo '# Provides:          svrjs' >> /etc/init.d/svrjs
 331   echo '# Required-Start:    $local_fs $remote_fs $network $syslog $named' >> /etc/init.d/svrjs
 332   echo '# Required-Stop:     $local_fs $remote_fs $network $syslog $named' >> /etc/init.d/svrjs
 333   echo '# Default-Start:     2 3 4 5' >> /etc/init.d/svrjs
 334   echo '# Default-Stop:      0 1 6' >> /etc/init.d/svrjs
 335   echo '# X-Interactive:     true' >> /etc/init.d/svrjs
 336   echo '# Short-Description: SVR.JS web server' >> /etc/init.d/svrjs
 337   echo '# Description:       Start the web server' >> /etc/init.d/svrjs
 338   echo '#  This script will start the SVR.JS web server.' >> /etc/init.d/svrjs
 339   echo '### END INIT INFO' >> /etc/init.d/svrjs
 340   echo >> /etc/init.d/svrjs
 341   echo 'server="/usr/lib/svrjs/svr.js"' >> /etc/init.d/svrjs
 342   echo 'servicename="SVR.JS web server"' >> /etc/init.d/svrjs
 343   echo >> /etc/init.d/svrjs
 344   echo 'user="svrjs"' >> /etc/init.d/svrjs
 345   echo 'nodejs=$(whereis -b -B $(echo $PATH | sed '"'"'s|:| |g'"'"') -f node | awk '"'"'{ print $2}'"'"' | xargs)' >> /etc/init.d/svrjs
 346   echo >> /etc/init.d/svrjs
 347   echo 'script="$(basename $0)"' >> /etc/init.d/svrjs
 348   echo 'lockfile="/var/lock/$script"' >> /etc/init.d/svrjs
 349   echo ' ' >> /etc/init.d/svrjs
 350   echo '. /etc/rc.d/init.d/functions 2>/dev/null || . /etc/rc.status 2>/dev/null || . /lib/lsb/init-functions 2>/dev/null' >> /etc/init.d/svrjs
 351   echo >> /etc/init.d/svrjs
 352   echo 'ulimit -n 12000 2>/dev/null' >> /etc/init.d/svrjs
 353   echo 'RETVAL=0' >> /etc/init.d/svrjs
 354   echo >> /etc/init.d/svrjs
 355   echo 'privilege_check()' >> /etc/init.d/svrjs
 356   echo '{' >> /etc/init.d/svrjs
 357   echo '  if [ "$(id -u)" != "0" ]; then' >> /etc/init.d/svrjs
 358   echo '    echo '"'"'You need to have root privileges to manage SVR.JS service'"'" >> /etc/init.d/svrjs
 359   echo '    exit 1' >> /etc/init.d/svrjs
 360   echo '  fi' >> /etc/init.d/svrjs
 361   echo '}' >> /etc/init.d/svrjs
 362   echo >> /etc/init.d/svrjs
 363   echo 'do_start()' >> /etc/init.d/svrjs
 364   echo '{' >> /etc/init.d/svrjs
 365   echo '    if [ ! -f "$lockfile" ] ; then' >> /etc/init.d/svrjs
 366   echo '        echo -n $"Starting $servicename: "' >> /etc/init.d/svrjs
 367   echo '        runuser -l "$user" -c "$nodejs $server > /dev/null &" && echo_success || echo_failure' >> /etc/init.d/svrjs
 368   echo '        RETVAL=$?' >> /etc/init.d/svrjs
 369   echo '        echo' >> /etc/init.d/svrjs
 370   echo '        [ $RETVAL -eq 0 ] && touch "$lockfile"' >> /etc/init.d/svrjs
 371   echo '    else' >> /etc/init.d/svrjs
 372   echo '        echo "$servicename is locked."' >> /etc/init.d/svrjs
 373   echo '        RETVAL=1' >> /etc/init.d/svrjs
 374   echo '    fi' >> /etc/init.d/svrjs
 375   echo '}' >> /etc/init.d/svrjs
 376   echo >> /etc/init.d/svrjs
 377   echo 'echo_failure() {' >> /etc/init.d/svrjs
 378   echo '    echo -n "fail"' >> /etc/init.d/svrjs
 379   echo '}' >> /etc/init.d/svrjs
 380   echo >> /etc/init.d/svrjs
 381   echo 'echo_success() {' >> /etc/init.d/svrjs
 382   echo '    echo -n "success"' >> /etc/init.d/svrjs
 383   echo '}' >> /etc/init.d/svrjs
 384   echo >> /etc/init.d/svrjs
 385   echo 'echo_warning() {' >> /etc/init.d/svrjs
 386   echo '    echo -n "warning"' >> /etc/init.d/svrjs
 387   echo '}' >> /etc/init.d/svrjs
 388   echo >> /etc/init.d/svrjs
 389   echo 'do_stop()' >> /etc/init.d/svrjs
 390   echo '{' >> /etc/init.d/svrjs
 391   echo '    echo -n $"Stopping $servicename: "' >> /etc/init.d/svrjs
 392   echo '    pid=`ps -aefw | grep "$nodejs $server" | grep -v " grep " | awk '"'"'{print $2}'"'"'`' >> /etc/init.d/svrjs
 393   echo '    kill -9 $pid > /dev/null 2>&1 && echo_success || echo_failure' >> /etc/init.d/svrjs
 394   echo '    RETVAL=$?' >> /etc/init.d/svrjs
 395   echo '    echo' >> /etc/init.d/svrjs
 396   echo '    [ $RETVAL -eq 0 ] && rm -f "$lockfile"' >> /etc/init.d/svrjs
 397   echo >> /etc/init.d/svrjs
 398   echo '    if [ "$pid" = "" -a -f "$lockfile" ]; then' >> /etc/init.d/svrjs
 399   echo '        rm -f "$lockfile"' >> /etc/init.d/svrjs
 400   echo '        echo "Removed lockfile ( $lockfile )"' >> /etc/init.d/svrjs
 401   echo '    fi' >> /etc/init.d/svrjs
 402   echo '}' >> /etc/init.d/svrjs
 403   echo >> /etc/init.d/svrjs
 404   echo 'do_status()' >> /etc/init.d/svrjs
 405   echo '{' >> /etc/init.d/svrjs
 406   echo '   pid=`ps -aefw | grep "$nodejs $server" | grep -v " grep " | awk '"'"'{print $2}'"'"' | head -n 1`' >> /etc/init.d/svrjs
 407   echo '   if [ "$pid" != "" ]; then' >> /etc/init.d/svrjs
 408   echo '     echo "$servicename (pid $pid) is running..."' >> /etc/init.d/svrjs
 409   echo '   else' >> /etc/init.d/svrjs
 410   echo '     echo "$servicename is stopped"' >> /etc/init.d/svrjs
 411   echo '   fi' >> /etc/init.d/svrjs
 412   echo '}' >> /etc/init.d/svrjs
 413   echo >> /etc/init.d/svrjs
 414   echo 'case "$1" in' >> /etc/init.d/svrjs
 415   echo '    start)' >> /etc/init.d/svrjs
 416   echo '        privilege_check' >> /etc/init.d/svrjs
 417   echo '        do_start' >> /etc/init.d/svrjs
 418   echo '        ;;' >> /etc/init.d/svrjs
 419   echo '    stop)' >> /etc/init.d/svrjs
 420   echo '        privilege_check' >> /etc/init.d/svrjs
 421   echo '        do_stop' >> /etc/init.d/svrjs
 422   echo '        ;;' >> /etc/init.d/svrjs
 423   echo '    status)' >> /etc/init.d/svrjs
 424   echo '        do_status' >> /etc/init.d/svrjs
 425   echo '        ;;' >> /etc/init.d/svrjs
 426   echo '    restart)' >> /etc/init.d/svrjs
 427   echo '        privilege_check' >> /etc/init.d/svrjs
 428   echo '        do_stop' >> /etc/init.d/svrjs
 429   echo '        do_start' >> /etc/init.d/svrjs
 430   echo '        RETVAL=$?' >> /etc/init.d/svrjs
 431   echo '        ;;' >> /etc/init.d/svrjs
 432   echo '    *)' >> /etc/init.d/svrjs
 433   echo '        echo "Usage: $0 {start|stop|status|restart}"' >> /etc/init.d/svrjs
 434   echo '        RETVAL=1' >> /etc/init.d/svrjs
 435   echo 'esac' >> /etc/init.d/svrjs
 436   echo >> /etc/init.d/svrjs
 437   echo 'exit $RETVAL' >> /etc/init.d/svrjs
 438   chmod a+x /etc/init.d/svrjs
 439   update-rc.d svrjs defaults
 440   /etc/init.d/svrjs start
 441 else
 442   echo '[Unit]' > /etc/systemd/system/svrjs.service
 443   echo 'Description=SVR.JS web server' >> /etc/systemd/system/svrjs.service
 444   echo 'After=network.target' >> /etc/systemd/system/svrjs.service
 445   echo >> /etc/systemd/system/svrjs.service
 446   echo '[Service]' >> /etc/systemd/system/svrjs.service
 447   echo 'Type=simple' >> /etc/systemd/system/svrjs.service
 448   echo 'User=svrjs' >> /etc/systemd/system/svrjs.service
 449   echo 'ExecStart=/usr/bin/env node /usr/lib/svrjs/svr.js' >> /etc/systemd/system/svrjs.service
 450   echo 'Restart=on-failure' >> /etc/systemd/system/svrjs.service
 451   echo >> /etc/systemd/system/svrjs.service
 452   echo '[Install]' >> /etc/systemd/system/svrjs.service
 453   echo 'WantedBy=multi-user.target' >> /etc/systemd/system/svrjs.service
 454   systemctl enable svrjs
 455   systemctl start svrjs
 456 fi
 457
 458 echo "Done! SVR.JS is installed successfully!"