# EGroupware CalDAV/CardDAV server and REST API CalDAV/CardDAV is build on HTTP and WebDAV, implementing the following additional RFCs containing documentation of the protocol: * [rfc4791: CalDAV: Calendaring Extensions to WebDAV](https://datatracker.ietf.org/doc/html/rfc4791) * [rfc6638: Scheduling Extensions to CalDAV](https://datatracker.ietf.org/doc/html/rfc6638) * [rfc6352: CardDAV: vCard Extensions to WebDAV](https://datatracker.ietf.org/doc/html/rfc6352) * [rfc6578: Collection Synchronization for WebDAV](https://datatracker.ietf.org/doc/html/rfc6578) * many additional extensions from former Apple Calendaring Server used by Apple clients and others ## Path / URL layout for CalDAV/CardDAV and REST is identical One can use the following URLs relative (!) to https://example.org/egroupware/groupdav.php - ```/``` base of Cal|Card|GroupDAV tree, only certain clients (KDE, Apple) can autodetect folders from here - ```/principals/``` principal-collection-set for WebDAV ACL - ```/principals/users//``` - ```/principals/groups//``` - ```//``` users home-set with - ```//addressbook/``` addressbook of user or group given the user has rights to view it - ```//addressbook-/``` shared addressbooks from other user or group - ```//addressbook-accounts/``` all accounts current user has rights to see - ```//calendar/``` calendar of user given the user has rights to view it - ```//calendar/?download``` download whole calendar as .ics file (GET request!) - ```//calendar-/``` shared calendar from other user or group (only current !) - ```//inbox/``` scheduling inbox of user - ```//outbox/``` scheduling outbox of user - ```//infolog/``` InfoLog's of user given the user has rights to view it - ```/addressbook/``` all addressbooks current user has rights to, announced as directory-gateway now - ```/addressbook-accounts/``` all accounts current user has rights to see - ```/calendar/``` calendar of current user - ```/infolog/``` infologs of current user - ```/(resources|locations)//calendar``` calendar of a resource/location, if user has rights to view - ```//(resource|location)-``` shared calendar from a resource/location Shared addressbooks or calendars are only shown in the users home-set, if he subscribed to it via his CalDAV preferences! Calling one of the above collections with a GET request / regular browser generates an automatic index from the data of a allprop PROPFIND, allow browsing CalDAV/CardDAV tree with a regular browser. ## REST API: using EGroupware CalDAV/CardDAV server with JSON > currently implemented only for contacts! Following RFCs / drafts used/planned for JSON encoding of ressources * [draft-ietf-jmap-jscontact: JSContact: A JSON Representation of Contact Data](https://datatracker.ietf.org/doc/html/draft-ietf-jmap-jscontact-07) ([*](#implemented-changes-to-jscontact-draft-07-from-next-draft)) * [draft-ietf-jmap-jscontact-vcard-06: JSContact: Converting from and to vCard](https://datatracker.ietf.org/doc/html/draft-ietf-jmap-jscontact-vcard/) * [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 addessbook ``` curl https://example.org/egroupware/groupdav.php//addressbook/ -H "Accept: application/pretty+json" --user { "responses": { "//addressbook/1833": { "uid": "5638-8623c4830472a8ede9f9f8b30d435ea4", "prodId": "EGroupware Addressbook 21.1.001", "created": "2010-10-21T09:55:42Z", "updated": "2014-06-02T14:45:24Z", "name": [ { "type": "personal", "value": "Default" }, { "type": "surname", "value": "Tester" } ], "fullName": { "value": "Default Tester" }, "organizations": { "org": { "name": "default.org", "units": { "org_unit": "department.default.org" } } }, "emails": { "work": { "email": "test@test.com", "contexts": { "work": true }, "pref": 1 } }, "phones": { "tel_work": { "phone": "+49 123 4567890", "pref": 1, "features": { "voice": true }, "contexts": { "work": true } }, "tel_cell": { "phone": "012 3723567", "features": { "cell": true }, "contexts": { "work": true } } }, "online": { "url": { "resource": "https://www.test.com/", "type": "uri", "contexts": { "work": true } } }, "notes": [ "Test test TEST\n\\server\\share\n\\\nother\nblah" ], }, "//addressbook/list-36": { "uid": "dfa5cac5-987b-448b-85d7-6c8b529a835c", "name": "Example distribution list", "card": { "uid": "dfa5cac5-987b-448b-85d7-6c8b529a835c", "prodId": "EGroupware Addressbook 21.1.001", "updated": "2018-04-11T14:46:43Z", "fullName": { "value": "Example distribution list" } }, "members": { "urn:uuid:5638-8623c4830472a8ede9f9f8b30d435ea4": true } } } } ```
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
Example: Getting just ETAGs and displayname of all contacts in a given AB ``` curl -i 'https://example.org/egroupware/groupdav.php//addressbook/?props[]=getetag&props[]=displayname' -H "Accept: application/pretty+json" --user { "responses": { "/addressbook/1833": { "displayname": "Default Tester", "getetag": "\"1833:24\"" }, "/addressbook/1838": { "displayname": "Test Tester", "getetag": "\"1838:19\"" } } } ```
Example: Start using a sync-token to get only changed entries since last sync #### Initial request with empty sync-token and only requesting 10 entries per chunk: ``` curl 'https://example.org/egroupware/groupdav.php/addressbook/?sync-token=&nresults=10&props[]=displayname' -H "Accept: application/pretty+json" --user { "responses": { "/addressbook/2050": "Frau Margot Test-Notifikation", "/addressbook/2384": "Test Tester", "/addressbook/5462": "Margot Testgedöns", "/addressbook/2380": "Frau Test Defaulterin", "/addressbook/5474": "Noch ein Neuer", "/addressbook/5575": "Mr New Name", "/addressbook/5461": "Herr Hugo Kurt Müller Senior", "/addressbook/5601": "Steve Jobs", "/addressbook/5603": "Ralf Becker", "/addressbook/1838": "Test Tester" }, "more-results": true, "sync-token": "https://example.org/egroupware/groupdav.php/addressbook/1400867824" } ``` #### Requesting next chunk: ``` curl 'https://example.org/egroupware/groupdav.php/addressbook/?sync-token=https://example.org/egroupware/groupdav.php/addressbook/1400867824&nresults=10&props[]=displayname' -H "Accept: application/pretty+json" --user { "responses": { "/addressbook/1833": "Default Tester", "/addressbook/5597": "Neuer Testschnuffi", "/addressbook/5593": "Muster Max", "/addressbook/5628": "2. Test Contact", "/addressbook/5629": "Testen Tester", "/addressbook/5630": "Testen Tester", "/addressbook/5633": "Testen Tester", "/addressbook/5635": "Test4 Tester", "/addressbook/5638": "Test Kontakt", "/addressbook/5636": "Test Default" }, "more-results": true, "sync-token": "https://example.org/egroupware/groupdav.php/addressbook/1427103057" } ```
Example: Requesting only changes since last sync #### ```sync-token``` from last sync need to be specified (note the null for a deleted resource!) ``` curl 'https://example.org/egroupware/groupdav.php/addressbook/?sync-token=https://example.org/egroupware/groupdav.php/addressbook/1400867824' -H "Accept: application/pretty+json" --user { "responses": { "/addressbook/5597": null, "/addressbook/5593": { "uid": "5638-8623c4830472a8ede9f9f8b30d435ea4", "prodId": "EGroupware Addressbook 21.1.001", "created": "2010-10-21T09:55:42Z", "updated": "2014-06-02T14:45:24Z", "name": [ { "type": "personal", "value": "Default" }, { "type": "surname", "value": "Tester" } ], "fullName": "Default Tester", .... } }, "sync-token": "https://example.org/egroupware/groupdav.php/addressbook/1427103057" } ```
* **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/5593' -H "Accept: application/pretty+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": "personal", "value": "Default" }, { "type": "surname", "value": "Tester" } ], "fullName": "Default Tester", .... } ```
* **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 ``` cat </addressbook/' -X POST -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": "personal", "value": "Default" }, { "type": "surname", "value": "Tester" } ], "fullName": { "value": "Default Tester" }, .... } EOF HTTP/1.1 201 Created Location: https://example.org/egroupware/groupdav.php//addressbook/1234 ```
* **PUT** requests with a ```Content-Type: application/json``` header allow modifying single resources * **DELETE** requests delete single resources * one can use ```Accept: application/pretty+json``` to receive pretty-printed JSON eg. for debugging and exploring the API #### Implemented changes to [JsContact draft 07](https://datatracker.ietf.org/doc/html/draft-ietf-jmap-jscontact-07) from next draft: * localizedString type / object is removed in favor or regular String type and a [localizations object like in JsCalendar](https://datatracker.ietf.org/doc/html/rfc8984#section-4.6.1) * [Vendor-specific Property Extensions and Values](https://datatracker.ietf.org/doc/html/draft-ietf-jmap-jscontact-07#section-1.3) use ```:``` like in JsCalendar