add-cron-job.sh

#!/bin/sh

set -e
#set -x

scriptdir=$(cd $(dirname $0); pwd -P)

. $scriptdir/os.sh

name=eprint-iacr-notifier.py
bin=/usr/local/bin/$name
conf=/etc/eprint-iacr-notifier.conf
logdir=/var/log/eprint
logfile=$logdir/out+err.log

if [ "$OS" = "OSX" ]; then
    user_group=staff
    root_group=wheel
    cronfile=$HOME/Library/LaunchAgents/org.iacr.eprint.notifier.plist
else
    user_group=`whoami`
    root_group=root
    crondir=/etc/cron.d
    cronfile=$crondir/eprint-iacr-notifier
fi

# symlink script in /usr/local/bin
sudo ln -sf $scriptdir/$name $bin
sudo chmod +x $bin

if [ ! -f "$conf" ]; then
    # write year and latest paper ID to conf file
    conf_tmp=`mktemp`
    year=`date +%Y`
    read -p "What is the last paper ID you have read? " ID
    echo $year >$conf_tmp
    echo $ID >>$conf_tmp
    sudo mv $conf_tmp $conf
else
    echo "WARNING: Already detected config file at: $conf. Leaving intact."
fi

# create log file and dir
if [ ! -d $logdir ]; then
    sudo mkdir $logdir
fi

if [ ! -f "$logfile" ]; then
    sudo touch "$logfile"
else
    echo "WARNING: Already detected log file at: $logfile. Leaving intact."
fi

sudo chown `whoami`:$user_group $logdir
sudo chown `whoami`:$user_group "$logfile"

if [ ! -f "$cronfile" ]; then
    # get details about the Gmail account used to send emails
    read -p "What is the email address that should receive new paper notifications? " NOTIF_EMAIL
    read -p "Gmail account username that should send out the emails: " GMAIL_USER
    read -p "Gmail account password: " GMAIL_PASSWD
    GMAIL_USER=${GMAIL_USER%"@gmail.com"}   # in case user gives extra @gmail.com
    GMAIL_ADDR="$GMAIL_USER@gmail.com"
fi

if [ "$OS" = "OSX" ]; then
    if [ ! -f "$cronfile" ]; then
        # copy .plist file to ~/Library/LaunchAgents
        cat >$cronfile << EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>org.iacr.eprint.notifier</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/python3</string>
        <string>/usr/local/bin/eprint-iacr-notifier.py</string>
        <string>$NOTIF_EMAIL</string>
        <string>$GMAIL_ADDR</string>
        <string>$GMAIL_PASSWD</string>
        <string>/etc/eprint-iacr-notifier.conf</string>
        <!--<string>1</string>
        <string>1</string>-->
    </array>
    <key>KeepAlive</key>
    <dict>
        <key>SuccessfulExit</key>
        <false/>
    </dict>
    <key>StandardErrorPath</key>
    <string>$logfile</string>
    <key>StandardOutPath</key>
    <string>$logfile</string>
    <key>StartInterval</key>
    <integer>3600</integer>
</dict>
</plist>
EOF
    else
        echo "WARNING: Already detected plist file at: $cronfile. Leaving intact."
    fi

    launchctl unload $cronfile || :
    launchctl load -w $cronfile

    echo "launchd job status: "
    launchctl list | grep org.iacr.eprint.notifier

elif [ "$OS" = "Linux" ]; then
    if [ ! -f "$cronfile" ]; then
        # configure cron job in /etc/cron.d/
        # For help, see: https://crontab.guru/#0_5_*_*_1-7
        time="5"        # the hour of the day to run the script: from 0 to 23 (military format)
        days="1-7"      # the days of the week to run the script: any range from 1 to 7
        cron_tmp=`mktemp`
        echo "0 $time * * $days `whoami` $bin $NOTIF_EMAIL $GMAIL_ADDR $GMAIL_PASSWD $conf >>$logfile 2>&1" >$cron_tmp
        # if you want to test the cron job is installing correctly, use this 'every 1-minute' template instead
        #echo "* * * * * `whoami` $bin $NOTIF_EMAIL $GMAIL_ADDR $GMAIL_PASSWD $conf >>$logfile 2>&1" >$cron_tmp
        sudo mkdir -p $crondir
        sudo mv $cron_tmp $cronfile
        sudo chmod 0644 $cronfile
        sudo chown root:$root_group $cronfile
    else
        echo "WARNING: Already detected cron file at: $cronfile. Leaving intact."
    fi
fi