Required: MS Graph App that has access to companyB.sharepoint.com drive/file items for a member of CompanyA
I am from Company/Organisation A. I have been granted access to a sharepoint site of Company/Orgtanisation B. https://companyB.sharepoint.com/sites/company_name/XXXX%20Files/Forms/AllItems.aspx
Via a browser this works as expected (i.e. access to the sharepoint site)
I have created a Multi-Tenant App (Azure dev portal) and have been able to receive a user delegated access token. refresh token works fine. The App (Overview) => Supported Account types: Multiple organisations.
Using the Graph Explorer (Authenticated for company A user) https://developer.microsoft.com/en-us/graph/graph-explorer
https://graph.microsoft.com/v1.0/sites/companyB.sharepoint.com:/sites returns
{
"error": {
"code": "invalidRequest",
"message": "Invalid hostname for this tenancy",
"innerError": {
"date": "2022-04-12T04:36:00",
"request-id": "qqq21a6d3-xxx-xxx-xxx-xxx390a4yyy",
"client-request-id": "qqq382fa-xxx-xxx-xxx-xxx708yyy"
}
}
}
What I'm trying to achieve is to get access to and obtain a list of files contained in the Sharepoint site under CompanyB. Then being able to walk through the files, add/edit/delete files to these directories (or whatever terminology MS uses for Sites and Files/Folders within a site) I cannot seem to find the 'SiteID' or 'DriveId' that the URL references point to...
Would it be feasible to create an APP under Company B (ie create a dev account for them) and create a simpler, non verified, organisation only app under company B and then login as a user from Company A?
Any pointers of examples of anyone that has done this is appreciated.