| paul@989 | 1 | = Calendaring Support = |
| paul@989 | 2 | |
| paul@989 | 3 | imip-agent aims to provide broad support for the following standards: |
| paul@989 | 4 | |
| paul@989 | 5 | * [[https://tools.ietf.org/html/rfc5545|iCalendar]] |
| paul@989 | 6 | * [[https://tools.ietf.org/html/rfc5546|iTIP]] |
| paul@989 | 7 | * [[https://tools.ietf.org/html/rfc6047|iMIP]] |
| paul@989 | 8 | |
| paul@989 | 9 | The following sections indicate notable deviations or deficiencies in the support |
| paul@989 | 10 | for these standards. |
| paul@989 | 11 | |
| paul@989 | 12 | == iCalendar == |
| paul@989 | 13 | |
| paul@989 | 14 | The general iCalendar format should be mostly supported, but the interpretation |
| paul@989 | 15 | of calendar objects in imip-agent is currently limited to events and free/busy |
| paul@989 | 16 | data, and the software does not seek to understand the other object types |
| paul@989 | 17 | described in the specification. |
| paul@989 | 18 | |
| paul@989 | 19 | The `VTIMEZONE` component is not interpreted. Instead, `TZID` properties are |
| paul@989 | 20 | expected to provide [[https://en.wikipedia.org/wiki/Tz_database|tz database]] |
| paul@989 | 21 | (tzinfo, zoneinfo, Olson database) identifiers that indicate the time zone or |
| paul@989 | 22 | "regime" applying to the indicated datetimes. |
| paul@989 | 23 | |
| paul@989 | 24 | The `VALARM` component is not interpreted since imip-agent does not seek to |
| paul@989 | 25 | implement reminders or notifications, although it is conceivable that a mechanism |
| paul@989 | 26 | could be implemented to achieve this over e-mail. |
| paul@989 | 27 | |
| paul@989 | 28 | Week numbers (`BYWEEKNO`) are not yet supported in recurring datetimes. |
| paul@989 | 29 | |
| paul@989 | 30 | Only the essential scheduling properties are interpreted by imip-agent. Thus, |
| paul@989 | 31 | support for attachments, categories, and so on is not provided in the |
| paul@989 | 32 | [[../CalendarManager|management interface]]. Such support may eventually be |
| paul@989 | 33 | added, and existing calendar clients may, of course, use such features without |
| paul@989 | 34 | any restrictions imposed by imip-agent. |
| paul@989 | 35 | |
| paul@989 | 36 | == iTIP == |
| paul@989 | 37 | |
| paul@989 | 38 | Only event and free/busy object types are supported in scheduling. |
| paul@989 | 39 | |
| paul@989 | 40 | `VTIMEZONE` and `VALARM` are not interpreted. |
| paul@989 | 41 | |
| paul@989 | 42 | Delegation |
| paul@989 | 43 | ([[http://tools.ietf.org/html/rfc5546#section-2.1.2|RFC 5546 section 2.1.2]]) |
| paul@989 | 44 | is not yet supported. |
| paul@989 | 45 | |
| paul@989 | 46 | Multiple recurrence updates using the `THISANDFUTURE` attribute on the |
| paul@989 | 47 | `RECURRENCE-ID` property |
| paul@989 | 48 | ([[http://tools.ietf.org/html/rfc5546#section-4.4.5|RFC 5546 section 4.4.5]]) |
| paul@989 | 49 | is not yet supported. |
| paul@989 | 50 | |
| paul@989 | 51 | The `REQUEST-STATUS` property is not yet supported. (See |
| paul@989 | 52 | [[http://tools.ietf.org/html/rfc5546#section-7.3|RFC 5546 section 7.3]].) |
| paul@989 | 53 | |
| paul@989 | 54 | Support is provided in the [[../Configuration|configuration]] of imip-agent |
| paul@989 | 55 | for interpreting `REQUEST` messages that should really be `COUNTER` messages, |
| paul@989 | 56 | generated by some mail programs. See the `IMIP_COUNTER_AS_REQUEST` setting in |
| paul@1214 | 57 | `config.txt`. |
| paul@989 | 58 | |
| paul@989 | 59 | == iMIP == |
| paul@989 | 60 | |
| paul@989 | 61 | Since attachments are not supported by the |
| paul@989 | 62 | [[../CalendarManager|management interface]], imip-agent does not generate or |
| paul@989 | 63 | interpret the various methods of referencing attachments in exchanged objects. |
| paul@989 | 64 | (See [[https://tools.ietf.org/html/rfc6047#section-4.3|RFC 6047 section 4.3]].) |
