# EGroupware REST API for Calendar
Authentication is via Basic Auth with username and a password, or a token valid for:
- either just the given user or all users
- CalDAV/CardDAV Sync (REST API)
- Calendar application
Following RFCs / drafts used/planned for JSON encoding of resources
* [rfc8984: JSCalendar: A JSON Representation of Calendar Data](https://datatracker.ietf.org/doc/html/rfc8984)
### Supported request methods and examples
* **GET** to collections with an ```Accept: application/json``` header return all resources (similar to WebDAV PROPFIND)
Example: Getting all entries of a given users calendar
```
curl https://example.org/egroupware/groupdav.php//calendar/ -H "Accept: application/pretty+json" --user
{
"responses": {
"//calendar/5695": {
"@type": "Event",
"prodId": "EGroupware Calendar 23.1.002",
"uid": "calendar-5695-34b52fc11cfa7e9acea5732210a53f48",
"sequence": "1",
"created": "2023-07-14T06:05:53Z",
"updated": "2023-07-14T08:00:04Z",
"title": "Test",
"start": "2023-07-14T10:00:00",
"timeZone": "Europe/Berlin",
"duration": "PT1H",
"participants": {
"5": {
"@type": "Participant",
"name": "Ralf Becker",
"email": "ralf@boulder.egroupware.org",
"kind": "individual",
"roles": {
"owner": true,
"chair": true
},
"participationStatus": "accepted"
}
},
"status": "confirmed",
"priority": 5,
"privacy": "public"
},
"//calendar/5699": {
"@type": "Event",
"prodId": "EGroupware Calendar 23.1.002",
"uid": "calendar-5699-34b52fc11cfa7e9acea5732210a53f48",
"sequence": "5",
"created": "2023-07-24T10:06:23Z",
"updated": "2023-07-24T13:11:49Z",
"title": "Monday and Wednesday 13h",
"start": "2023-07-24T13:00:00",
"timeZone": "Europe/Berlin",
"duration": "PT1H",
"recurrenceRules": [
{
"@type": "RecurrenceRule",
"frequency": "weekly",
"until": "2023-08-30T13:00:00",
"byDay": {
"@type": "NDay",
"day": "mo,we"
}
}
],
"recurrenceOverrides": {
"2023-07-31T13:00:00": { "excluded": true },
"2023-07-26T13:00:00": {
"sequence": "1",
"updated": "2023-07-24T11:39:44Z",
"title": "Monday und Wednesday 13h, but 26th 14h",
"start": "2023-07-26T14:00:00",
"description": "sdfasdf",
"showWithoutTime": null,
"categories": null,
"alerts": {
"64be4dc0-a044-4b27-b450-0026ac120002": {
"@type": "Alert",
"trigger": {
"@type": "OffsetTrigger",
"offset": 0
}
},
"64be4d1f-c958-4fbd-afc3-0026ac120002": null
}
}
},
"participants": {
"5": {
"@type": "Participant",
"name": "Ralf Becker",
"email": "ralf@boulder.egroupware.org",
"kind": "individual",
"roles": {
"owner": true,
"chair": true
},
"participationStatus": "accepted"
}
},
"alerts": {
"64be4d1f-c958-4fbd-afc3-0026ac120002": {
"@type": "Alert",
"trigger": {
"@type": "OffsetTrigger",
"offset": 0
}
}
},
"status": "confirmed",
"priority": 5,
"privacy": "public"
},
"//calendar/5701": {
"@type": "Event",
"prodId": "EGroupware Calendar 23.1.002",
"uid": "calendar-5701-34b52fc11cfa7e9acea5732210a53f48",
"sequence": "1",
"created": "2023-07-24T12:31:58Z",
"updated": "2023-07-24T12:41:54Z",
"title": "Di und Do den ganzen Tag",
"start": "2023-07-25T00:00:00",
"timeZone": "Europe/Berlin",
"showWithoutTime": true,
"duration": "P1D",
"recurrenceRules": [
{
"@type": "RecurrenceRule",
"frequency": "weekly",
"until": "2023-08-03T00:00:00",
"byDay": {
"@type": "NDay",
"day": "tu,th"
}
}
],
"recurrenceOverrides": {
"2023-07-27T00:00:00": {
"title": "Di und Do den ganzen Tag: AUSNAHME",
"start": "2023-07-27T00:00:00",
"description": "adsfads",
"sequence": null,
"categories": null,
"participants": {
"44": {
"@type": "Participant",
"name": "Birgit Becker",
"email": "birgit@boulder.egroupware.org",
"kind": "individual",
"roles": { "attendee": true },
"participationStatus": "needs-action"
}
},
"alerts": {
"64be7192-d4e4-4609-8c7a-004dac120002": {
"@type": "Alert",
"trigger": {
"@type": "OffsetTrigger",
"offset": 0
}
},
"64be6f3e-bc8c-4e78-9f96-004bac120002": null
}
}
},
"freeBusyStatus": "free",
"participants": {
"5": {
"@type": "Participant",
"name": "Ralf Becker",
"email": "ralf@boulder.egroupware.org",
"kind": "individual",
"roles": {
"owner": true,
"chair": true
},
"participationStatus": "accepted"
}
},
"alerts": {
"64be6f3e-bc8c-4e78-9f96-004bac120002": {
"@type": "Alert",
"trigger": {
"@type": "OffsetTrigger",
"offset": 0
}
}
},
"status": "confirmed",
"priority": 5,
"privacy": "public"
}
}
}
```
following GET parameters are supported to customize the returned properties:
- props[]= eg. props[]=getetag to return only the ETAG (multiple DAV properties can be specified)
Default for addressbook collections is to only return address-data (JsContact), other collections return all props.
- sync-token= to only request change since last sync-token, like rfc6578 sync-collection REPORT
- nresults=N limit number of responses (only for sync-collection / given sync-token parameter!)
this will return a "more-results"=true attribute and a new "sync-token" attribute to query for the next chunk
Examples: see addressbook
* **GET** requests with an ```Accept: application/json``` header can be used to retrieve single resources / JsContact or JsCalendar schema
Example: GET request for a single resource
```
curl 'https://example.org/egroupware/groupdav.php/addressbook/6502' -H "Accept: application/pretty+json" --user
{
"@type": "Event",
"prodId": "EGroupware Calendar 23.1.002",
"uid": "calendar-5695-34b52fc11cfa7e9acea5732210a53f48",
"sequence": "1",
"created": "2023-07-14T06:05:53Z",
"updated": "2023-07-14T08:00:04Z",
"title": "Test",
"start": "2023-07-14T10:00:00",
"timeZone": "Europe/Berlin",
"duration": "PT1H",
"participants": {
"5": {
"@type": "Participant",
"name": "Ralf Becker",
"email": "ralf@boulder.egroupware.org",
"kind": "individual",
"roles": {
"owner": true,
"chair": true
},
"participationStatus": "accepted"
}
},
"status": "confirmed",
"priority": 5,
"privacy": "public"
}
```
* **POST** requests to collection with a ```Content-Type: application/json``` header add new entries in addressbook or calendar collections
(Location header in response gives URL of new resource)
Example: POST request to create a new resource and use "Prefer: return=representation" to get it fully expanded back
```
cat </calendar/' -X POST -d @- -H "Content-Type: application/json" -H "Prefer: return=representation" --user
{
"title": "Test 25th",
"start": "2023-07-25T10:00:00",
"timeZone": "Europe/Berlin",
"duration": "PT1H"
}
EOF
HTTP/1.1 201 Created
Content-Type: application/jscalendar+json;type=event;charset=utf-8
Location: /egroupware/groupdav.php/ralf/calendar/5704
ETag: "5704:0:1690209221"
Schedule-Tag: "5704:0"
X-WebDAV-Status: 201 Created
{
"@type":"Event",
"prodId":"EGroupware Calendar 23.1.002",
"uid":"urn:uuid:e2b7278b-d91a-47d1-85ee-19dd1fb9b315",
"created":"2023-07-24T14:33:41Z",
"updated":"2023-07-24T14:33:41Z",
"title":"Test 25th",
"start":"2023-07-25T10:00:00",
"timeZone":"Europe/Berlin",
"duration":"PT1H",
"participants":{
"5":{
"@type":"Participant",
"name":"Ralf Becker",
"email":"ralf@boulder.egroupware.org",
"kind":"individual",
"roles":{
"owner":true,
"chair":true
},
"participationStatus":"accepted"
}
}
"status":"confirmed",
"priority":5,
"privacy":"public"
}
```
* **PUT** requests with a ```Content-Type: application/json``` header allow modifying single resources (requires to specify all attributes!)
Example: PUT request to update a resource
```
cat </addressbook/1234' -X PUT -d @- -H "Content-Type: application/json" --user
{
"uid": "5638-8623c4830472a8ede9f9f8b30d435ea4",
"prodId": "EGroupware Addressbook 21.1.001",
"created": "2010-10-21T09:55:42Z",
"updated": "2014-06-02T14:45:24Z",
"name": [
{ "type": "@type": "NameComponent", "personal", "value": "Default" },
{ "type": "@type": "NameComponent", "surname", "value": "Tester" }
],
"fullName": { "value": "Default Tester" },
....
}
EOF
HTTP/1.1 204 No Content
```
Example: PUT request with UID to update an existing resource or create it, if not exists
```
cat </calendar/5638-8623c4830472a8ede9f9f8b30d435ea4' -X PUT -d @- -H "Content-Type: application/json" --user
{
"uid": "5638-8623c4830472a8ede9f9f8b30d435ea4",
"title": "Testevent",
"start": "2023-07-24T12:00:00",
"timeZone": "Europe/Berlin",
"duration": "PT2H",
....
}
EOF
```
Update of an existing one:
```
HTTP/1.1 204 No Content
```
New contact:
```
HTTP/1.1 201 Created
Location: https://example.org/egroupware/groupdav.php//calendar/1234
```
* **PATCH** request with a ```Content-Type: application/json``` header allow to modify a single resource by only specifying changed attributes as a [PatchObject](https://www.rfc-editor.org/rfc/rfc8984.html#type-PatchObject)
Example: PATCH request to modify an event with partial data
```
cat </calendar/1234' -X PATCH -d @- -H "Content-Type: application/json" --user
{
"title": "New title"
}
EOF
HTTP/1.1 204 No content
```
* **DELETE** requests delete single resources
Example: Delete an existing event
> Please note: the "Accept: application/json" header is required, as the CalDAV server would return 404 NotFound as the url does NOT end with .ics
```
curl -i 'https://example.org/egroupware/groupdav.php//calendar/1234' -X DELETE -H "Accept: application/json" --user
HTTP/1.1 204 No Content
```
* one can use ```Accept: application/pretty+json``` to receive pretty-printed JSON e.g. for debugging and exploring the API