How to determine recurrence for Calendar items?

[philipsd6]

I've managed to use pypff to load my *.ost file, and find my Calendar sub folder with this function:

In [242]: def find_sub_folder(root_folder, sub_folder_name):
     ...:     for folder in root_folder.sub_folders:
     ...:         if folder.name == sub_folder_name:
     ...:             return folder
     ...:         sub_folder = find_sub_folder(folder, sub_folder_name)
     ...:         if sub_folder is not None:
     ...:             return sub_folder
     ...:     return None
In [243]: cal = find_sub_folder(pff_obj.root_folder, "Calendar")

Then I can find the message I see in my calendar for a recurring meeting:

In [244]: for msg in cal.sub_messages:
     ...:     if msg.subject == 'My Recurring Meeting':
     ...:         break
In [245]: msg.conversation_topic == msg.subject == 'My Recurring Meeting'
Out[245]: True

But I can only find the start/end times for the first instance of the meeting, even though I have an instance occurring today!

In [252]: for rs in msg.record_sets:
     ...:     for e in rs.entries:
     ...:         if e.entry_type in [0x0060, 0x0061]:
     ...:             print(f"0x{e.entry_type:04x} {e.data_as_datetime}")
0x0060 2021-02-17 19:00:00
0x0061 2021-02-17 19:30:00

I've examined the MS-OXOCAL references as best I can, but none of the entry types I've tried that reference any recurrence are available in the record set:

• PidLidAppointmentRecur :: 0x8216
• PidLidRecurrenceType :: 0x8231
• PidLidRecurrencePattern :: 0x8232

In [259]: for rs in msg.record_sets:
     ...:     for e in rs.entries:
     ...:         if e.entry_type in [0x8216, 0x8231, 0x8232]:
     ...:             print(f"0x{e.entry_type:04x} {e.data}")

How can I get the full recurrence structure for a given Calendar message?

[joachimmetz]

Have a look at https://github.com/libyal/libfmapi/blob/main/documentation/MAPI%20definitions.pdf or use pffexport export all option to see what entry values are set.