From 524ae817b3655bae6473e1109f2a426dfd381d19 Mon Sep 17 00:00:00 2001
From: Georg Ehrke <developer@georgehrke.com>
Date: Fri, 13 Jan 2017 19:21:17 +0100
Subject: [PATCH] replace TRIGGER:P with TRIGGER:P0D

Signed-off-by: Georg Ehrke <developer@georgehrke.com>
---
 js/app/models/veventModel.js            | 27 +++++++--
 tests/js/unit/models/veventModelSpec.js | 81 +++++++++++++++++++++++++
 2 files changed, 102 insertions(+), 6 deletions(-)

diff --git a/js/app/models/veventModel.js b/js/app/models/veventModel.js
index 24d5038cc3..66222f7594 100644
--- a/js/app/models/veventModel.js
+++ b/js/app/models/veventModel.js
@@ -284,24 +284,35 @@ app.factory('VEvent', function(TimezoneService, FcEvent, SimpleEvent, ICalFactor
 	* @returns {string}
 	*/
 	VEvent.sanDate = function(ics) {
-
-		// console.log( ICAL.Time.now() );
-
 		ics.split("\n").forEach(function(el, i) {
 
 			var findTypes = ['DTSTART', 'DTEND'];
 			var dateType = /[^:]*/.exec(el)[0];
 			var icsDate = null;
 
-			if (findTypes.indexOf(dateType) >= 0 && el.trim().substr(-3) === "T::") { // is date without time
+			if (findTypes.indexOf(dateType) >= 0 && el.trim().substr(-3) === 'T::') { // is date without time
 				icsDate = el.replace(/[^0-9]/g, '');
-				ics = ics.replace(el, dateType + ";VALUE=DATE:" + icsDate);
+				ics = ics.replace(el, dateType + ';VALUE=DATE:' + icsDate);
 			}
 		});
 
 		return ics;
 	};
 
+	/**
+	 * fix incorrectly populated trigger
+	 * @param {string} ics
+	 * @returns {string}
+	 */
+	VEvent.sanTrigger = function(ics) {
+		const regex = /^TRIGGER:P$/gm;
+		if (ics.match(regex)) {
+			ics = ics.replace(regex, 'TRIGGER:P0D');
+		}
+
+		return ics;
+	};
+
 	/**
 	 * create a VEvent object from raw ics data
 	 * @param {Calendar} calendar
@@ -313,10 +324,14 @@ app.factory('VEvent', function(TimezoneService, FcEvent, SimpleEvent, ICalFactor
 	VEvent.fromRawICS = function(calendar, ics, uri, etag='') {
 		let comp;
 
-		if (ics.search("T::") > 0) { // no time
+		if (ics.search('T::') > 0) { // no time
 			ics = VEvent.sanDate(ics);
 		}
 
+		if (ics.search('TRIGGER:P') > 0) {
+			ics = VEvent.sanTrigger(ics);
+		}
+
 		try {
 			const jCal = ICAL.parse(ics);
 			comp = new ICAL.Component(jCal);
diff --git a/tests/js/unit/models/veventModelSpec.js b/tests/js/unit/models/veventModelSpec.js
index 238939beef..440d69df5d 100644
--- a/tests/js/unit/models/veventModelSpec.js
+++ b/tests/js/unit/models/veventModelSpec.js
@@ -429,6 +429,49 @@ DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
 END:STANDARD
 END:VTIMEZONE
+END:VCALENDAR`;
+
+	const ics12 = `BEGIN:VCALENDAR
+VERSION:2.0
+CALSCALE:GREGORIAN
+PRODID:-//SabreDAV//SabreDAV//EN
+X-WR-CALNAME:Test
+X-APPLE-CALENDAR-COLOR:#c274e7
+BEGIN:VTIMEZONE
+TZID:Europe/Berlin
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
+DTSTART:19810329T020000
+TZNAME:GMT+2
+TZOFFSETTO:+0200
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+DTSTART:19961027T030000
+TZNAME:GMT+1
+TZOFFSETTO:+0100
+END:STANDARD
+END:VTIMEZONE
+BEGIN:VEVENT
+CLASS:PUBLIC
+DESCRIPTION: 
+DTEND;TZID=Europe/Berlin:20170105T130000
+DTSTART;TZID=Europe/Berlin:20170105T120000
+DTSTAMP:20170103T150245Z
+LAST-MODIFIED:20170103T150246Z
+PRIORITY:5
+SEQUENCE:1
+SUMMARY:Test
+TRANSP:OPAQUE
+UID:348acb0f-b02f-4800-9fde-202a0717c5b5
+BEGIN:VALARM
+ACTION:DISPLAY
+DESCRIPTION:Reminder
+TRIGGER:P
+END:VALARM
+END:VEVENT
 END:VCALENDAR`;
 
 	const timezone_nyc = {
@@ -1862,4 +1905,42 @@ END:VCALENDAR`.split("\n").join("\r\n"));
 		expect(vevent.comp).toEqual(root);
 		expect(vevent.uri).toEqual('Nextcloud-123456.ics');
 	});
+
+	it ('should correctly sanatize malformed triggers', () => {
+		const calendar = {this_is_a_fancy_calendar: true};
+		const vevent = VEvent.fromRawICS(calendar, ics12);
+
+		let called = false;
+
+		const start = moment('2017-01-01');
+		const end = moment('2017-01-31');
+
+		vevent.getFcEvent(start, end, timezone_berlin).then((fcEvents) => {
+			expect(fcEvents.length).toEqual(1);
+			expect(fcEvents[0][1].toString()).toEqual(`BEGIN:VEVENT
+CLASS:PUBLIC
+DESCRIPTION: 
+DTEND;TZID=Europe/Berlin:20170105T130000
+DTSTART;TZID=Europe/Berlin:20170105T120000
+DTSTAMP:20170103T150245Z
+LAST-MODIFIED:20170103T150246Z
+PRIORITY:5
+SEQUENCE:1
+SUMMARY:Test
+TRANSP:OPAQUE
+UID:348acb0f-b02f-4800-9fde-202a0717c5b5
+BEGIN:VALARM
+ACTION:DISPLAY
+DESCRIPTION:Reminder
+TRIGGER:P0D
+END:VALARM
+END:VEVENT`.split("\n").join("\r\n"));
+
+			called = true;
+		}).catch(() => fail('Promise was not supposed to fail'));
+
+		$rootScope.$apply();
+
+		expect(called).toEqual(true);
+	});
 });