Display upcoming events in the Nextcloud calendar using a custom shell script by extending the earlier ideas.
Shell script using curl and xmlstarlet as described in the previous blog post.
#!/bin/bash
# Display upcoming events in Nextcloud calendar
# Blog posts:
# https://sleeplessbeastie.eu/2018/06/11/how-to-display-upcoming-events-in-nextcloud-calendar-using-text-based-terminal-emulator/
# https://sleeplessbeastie.eu/2018/06/18/how-to-display-upcoming-events-in-nextcloud-calendar-using-shell-script/
# CalDav server and path
dav_server="https://cloud.example.org"
dav_path="/remote.php/dav/"
# Basic auth credentials
username="crono"
password="zabie"
# Get URL for the user's principal resource on the server
dav_user_path=$(curl --silent \
--request PROPFIND \
--header 'Content-Type: text/xml' \
--header 'Depth: 0' \
--data '<d:propfind xmlns:d="DAV:">
<d:prop>
<d:current-user-principal />
</d:prop>
</d:propfind>' \
--user ${username}:${password} \
${dav_server}${dav_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/d:current-user-principal/d:href' -n)
# Get URL that contains calendar collections owned by the user
dav_user_calendar_home_path=$(curl --silent \
--request PROPFIND \
--header 'Content-Type: text/xml' \
--header 'Depth: 0' \
--data '<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop>
<c:calendar-home-set />
</d:prop>
</d:propfind>' \
--user ${username}:${password} \
${dav_server}${dav_user_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-home-set/d:href' -n)
# Get calendar paths
dav_user_calendar_paths=$(curl --silent \
--request PROPFIND \
--header 'Content-Type: text/xml' \
--header 'Depth: 1' \
--data '<d:propfind xmlns:d="DAV:" xmlns:cs="http://calendarserver.org/ns/"><d:prop><d:displayname/></d:prop></d:propfind>' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_home_path} | \
xmlstarlet sel -t -m 'd:multistatus/d:response' -i "string-length(d:propstat/d:prop/d:displayname)" -i "d:propstat/d:status='HTTP/1.1 200 OK'" -v "d:href" -n)
# Define start/end date
date_start=$(date +"%Y%m%dT000000" -d today)
date_end=$(date +"%Y%m%dT000000" -d tomorrow)
# Get data for each calendar
for dav_user_calendar_path in ${dav_user_calendar_paths}; do
# calendar name
calendar_name=$(curl --silent \
--request PROPFIND \
--header "Content-Type: text/xml" \
--header 'Depth: 0' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/d:displayname' -n)
# event types stored in this calendar e.g. VTODO, VEVENTS
component_types=$(curl --silent \
--request PROPFIND \
--header "Content-Type: text/xml" \
--header 'Depth: 0' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:supported-calendar-component-set/cal:comp/@name' -n)
# initial values
events=""
events_count="0"
todos=""
todos_count="0"
overdue_todos=""
overdue_todos_count="0"
general_todos=""
general_todos_count="0"
inotrfc_todos=""
inotrfc_todos_count="0"
case "${component_types}" in
*VEVENT*)
# Today's events
events=$(curl --silent \
--request REPORT \
--header "Depth: 1" \
--header "Content-Type: text/xml" \
--data '<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop><d:getetag /><c:calendar-data /></d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="VEVENT">
<c:time-range start="'${date_start}'" end="'${date_end}'"/>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>' \
--basic \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-data' -n | \
grep ^SUMMARY)
events_count=$(echo "$events" | grep -c ^SUMMARY)
;&
*VTODO*)
# Tasks to be done today
todos=$(curl --silent \
--request REPORT \
--header "Depth: 1" \
--header "Content-Type: text/xml" \
--data '<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop><d:getetag /><c:calendar-data /></d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="VTODO">
<c:prop-filter name="DUE">
<c:time-range start="'${date_start}'" end="'${date_end}'"/>
<c:is-defined/>
</c:prop-filter>
<c:prop-filter name="COMPLETED">
<c:is-not-defined/>
</c:prop-filter>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-data' -n | \
grep ^SUMMARY)
todos_count=$(echo "$todos" | grep -c ^SUMMARY)
# Overdue tasks
overdue_todos=$(curl --silent \
--request REPORT \
--header "Depth: 1" \
--header "Content-Type: text/xml" \
--data '<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop><d:getetag /><c:calendar-data /></d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="VTODO">
<c:prop-filter name="DUE">
<c:time-range end="'${date_start}'"/>
<c:is-defined/>
</c:prop-filter>
<c:prop-filter name="COMPLETED">
<c:is-not-defined/>
</c:prop-filter>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-data' -n | \
grep ^SUMMARY)
overdue_todos_count=$(echo "$overdue_todos" | grep -c ^SUMMARY)
# Tasks that belong to "Idea" category but does not contain RFC string
inotrfc_todos=$(curl --silent \
--request REPORT \
--header "Depth: 1" \
--header "Content-Type: text/xml" \
--data '<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop><d:getetag /><c:calendar-data /></d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="VTODO">
<c:prop-filter name="SUMMARY">
<c:text-match negate-condition="yes" collation="i;ascii-casemap">rfc</c:text-match>
</c:prop-filter>
<c:prop-filter name="CATEGORIES">
<c:text-match collation="i;ascii-casemap">idea</c:text-match>
</c:prop-filter>
<c:prop-filter name="COMPLETED">
<c:is-not-defined/>
</c:prop-filter>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-data' -n | \
grep ^SUMMARY)
inotrfc_todos_count=$(echo "$inotrfc_todos" | grep -c ^SUMMARY)
# Tasks without defined due date
general_todos=$(curl --silent \
--request REPORT \
--header "Depth: 1" \
--header "Content-Type: text/xml" \
--data '<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop><d:getetag /><c:calendar-data /></d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="VTODO">
<c:prop-filter name="DUE">
<c:is-not-defined/>
</c:prop-filter>
<c:prop-filter name="COMPLETED">
<c:is-not-defined/>
</c:prop-filter>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>' \
--user ${username}:${password} \
${dav_server}${dav_user_calendar_path} | \
xmlstarlet sel -t -v 'd:multistatus/d:response/d:propstat/d:prop/cal:calendar-data' -n | \
grep ^SUMMARY)
general_todos_count=$(echo "$general_todos" | grep -c ^SUMMARY)
;&
esac
if [ "$events_count" -ge "1" ] || \
[ "$todos_count" -ge "1" ] || \
[ "$overdue_todos_count" -ge "1" ] || \
[ "$general_todos_count" -ge "1" ] || \
[ "$inotrfc_todos_count" -ge "1" ]; then
echo $calendar_name
if [ "$events_count" -ge "1" ]; then
echo " Today's events: "
printf "$events\n" | tr -s "\n" | sed "s/^SUMMARY://" | while read event; do
echo " * $event"
done
else
echo " There are no events for today"
fi
if [ "$todos_count" -ge "1" ]; then
echo " Tasks to be done today"
printf "$todos\n" | tr -s "\n" | sed "s/^SUMMARY://" | while read todo; do
echo " * $todo"
done
else
echo " There are no tasks to be done today"
fi
if [ "$overdue_todos_count" -ge "1" ]; then
echo " Overdue tasks"
printf "$overdue_todos\n" | tr -s "\n" | sed "s/^SUMMARY://" | while read todo; do
echo " * $todo"
done
fi
if [ "$inotrfc_todos_count" -ge "1" ]; then
echo " Tasks that belong to the \"Idea\" category but does not contain RFC string"
printf "$inotrfc_todos\n" | tr -s "\n" | sed "s/^SUMMARY://" | while read todo; do
echo " * $todo"
done
else
echo " There are no tasks that belong to the \"Idea\" category but does not contain RFC string"
fi
if [ "$general_todos_count" -ge "1" ]; then
echo " Tasks without defined due date"
printf "$general_todos\n" | tr -s "\n" | sed "s/^SUMMARY://" | while read todo; do
echo " * $todo"
done
else
echo " There are no tasks without defined due date"
fi
fi
doneShell script output.
Personal
Today's events:
* Configure VPN for Netflix
* Renew car insurance
There are no tasks to be done today
There are no tasks that belong to the "Idea" category but does not contain RFC string
Tasks without defined due date
* Buy Radiant Historia for DS
Debian
There are no events for today
There are no tasks to be done today
There are no tasks that belong to the "Idea" category but does not contain RFC string
Tasks without defined due date
* Install OpenVPN
* Upgrade iptables firewall
Work
There are no events for today
There are no tasks to be done today
There are no tasks that belong to the "Idea" category but does not contain RFC string
Tasks without defined due date
* Reset password for Safari Books Online
Projects
Today's events:
* Install and configure Dokuwiki
Tasks to be done today
* Create blog post about CalDAV
Overdue tasks
* Inspect RFC4791
Tasks that belong to the "Idea" category but does not contain RFC string
* Create blog post about CalDAV
There are no tasks without defined due date
This shell script and the previous blog post should be enough to create a useful solution that filters calendar events and displays these or send further using API to Slack or other services.
