Re: [Evolution] [tentative query] is it possible to subscribe to other people's published outlook calendars

[Dan Kortschak <dan kortschak io>]

On Mon, 2020-07-27 at 13:50 +0200, Milan Crha via evolution-list wrote:
> > subscribing to other than the default folders is possible, but it's
> > tricky, because you need an Exchange Web Services folder ID to do
> > that.
> > One way, if the other person uses the Evolution as well, is to
> > right-click the shared calendar in his/her account and pick
> > "Permissions...". There's the folder ID shown at the top. It can be
> > selected and copied out. Just make sure you copy the whole text
>
> (it's
> > lengthy; do not be afraid of the three dots, which are only a
>
> visual
> > thing).

Hi,

I have obtained the folder ID which looks like it might be a base64
encoding. It's 70 characters long. I'm not sure how to use this though
now.

When I go to "Subscribe to folder of other EWS user..." I can select
the appropriate user in the "User:" field, but if I put the folder ID
in the "Folder name:" field (the only remaining place) undecorated. I
get the following error: "Id is malformed." after a pop-up that
disappears to quickly to be able to read.

The XML that's returned (looking via EWS_DEBUG=2) says essentially the
same thing.

```
<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/";>;;;;
  <s:Header>
    <h:ServerVersionInfo xmlns:h="
http://schemas.microsoft.com/exchange/services/2006/types"; xmlns:xsd="
http://www.w3.org/2001/XMLSchema"; xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"; MajorVersion="15"
MinorVersion="20" MajorBuildNumber="3239" MinorBuildNumber="18"
Version="V2018_01_08"/>
  </s:Header>
  <s:Body>
    <m:GetFolderResponse xmlns:m="
http://schemas.microsoft.com/exchange/services/2006/messages";
xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"; xmlns:t="
http://schemas.microsoft.com/exchange/services/2006/types";>;;;;
      <m:ResponseMessages>
        <m:GetFolderResponseMessage ResponseClass="Error">
          <m:MessageText>Id is malformed.</m:MessageText>
          <m:ResponseCode>ErrorInvalidIdMalformed</m:ResponseCode>
          <m:DescriptiveLinkKey>0</m:DescriptiveLinkKey>
          <m:Folders/>
        </m:GetFolderResponseMessage>
      </m:ResponseMessages>
    </m:GetFolderResponse>
  </s:Body>
</s:Envelope>
```

This is what evolution sent to the server (made human readable):
```
<SOAP-ENV:Envelope
                xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";
                xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
                xmlns:xsd="http://www.w3.org/2001/XMLSchema";
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>;
        <SOAP-ENV:Header>
                <types:RequestServerVersion
                        xmlns:types="http://schemas.microsoft.com/exchange/services/2006/types"; 
Version="Exchange2013"/>
        </SOAP-ENV:Header>
        <SOAP-ENV:Body
                xmlns:messages="http://schemas.microsoft.com/exchange/services/2006/messages";>;
                <messages:GetFolder xmlns="http://schemas.microsoft.com/exchange/services/2006/types";>;
                        <messages:FolderShape>
                                <BaseShape>
                                        Default
                                </BaseShape>
                                <AdditionalProperties>
                                        <FieldURI FieldURI="folder:FolderClass"/>
                                        <FieldURI FieldURI="folder:ParentFolderId"/>
                                </AdditionalProperties>
                        </messages:FolderShape>
                        <messages:FolderIds>
                                <FolderId Id="<70-byte-folder-ID"/>
                        </messages:FolderIds>
                </messages:GetFolder>
        </SOAP-ENV:Body>
</SOAP-ENV:Envelope>
```

Is there something else that I need to do to this ID to get it to be
accepted?

thanks
Dan