update_deluge_session.sh

#!/bin/bash
#
# Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR 
# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# 
DELUGE_URL=http://localhost:8112
DELUGE_PW=deluge
DELUGE_JAR=/tmp/.deluge-cookiejar
DELUGE_NGINX_CONF=/etc/nginx/deluge_session_include

if [ -f /etc/environment/deluge ]; then
    . /etc/environment/deluge
fi

DELUGE_CURL="curl --compressed --silent -b $DELUGE_JAR -c $DELUGE_JAR -H 'Accept: application/json' -H 'Content-Type: application/json'"

AUTH_CHECK='{"method":"auth.check_session","params":[],"id":1}'
AUTH_LOGIN="{\"method\":\"auth.login\",\"params\":[\"${DELUGE_PW}\"],\"id\":2}"

if [ ! -f $DELUGE_JAR ]; then
  touch $DELUGE_JAR || exit 1
fi

LASTCOOKIE=$(grep _session_id $DELUGE_JAR | cut -f 7-)

${DELUGE_CURL} -d ${AUTH_CHECK} ${DELUGE_URL}/json | grep -E '"result": *true'

if [ $? -gt 0 ]; then
    ${DELUGE_CURL} -d ${AUTH_LOGIN} ${DELUGE_URL}/json || exit 1

    COOKIE=$(grep '_session_id' $DELUGE_JAR | cut -f 7-)
    if [ "$COOKIE" != "$LASTCOOKIE" ]; then
        echo "proxy_set_header Cookie _session_id=$COOKIE;" > $DELUGE_NGINX_CONF
        echo "Updated session_id"
        systemctl reload nginx
    fi

fi