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1. Sharepoint Microsoft Graph REST API-based integration.
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More info about Microsft Graph REST API: https://learn.microsoft.com/en-us/graph/api/resources/onedrive?view=graph-rest-1.0}

Remote item name: Sharepoint

!!! Proxy Configuration: If your server accesses the internet through a proxy, make sure to whitelist the following domains to allow authentication and Microsoft Graph API access:
• login.microsoftonline.com
• graph.microsoft.com

Open the Microsoft Azure Portal: https://azure.microsoft.com/en-us/features/azure-portal/

Application registration: Navigate to App registrations in the Azure Portal. Click on "New registration" to create a new application.



The Redirect URL must end with "register_microsoft_graph_api/".

    http://localhost:9090/register_microsoft_graph_api/

or

    
    https://your.crushftp.domain.com/register_microsoft_graph_api/
    

Configure API permission: You must also grant permissions for Microsoft Graph. Go to the API Permissions section, click Add a permission, and select Microsoft Graph. To learn more about Microsoft Graph permissions—including the difference between Application and Delegated permissions—refer to the official documentation: https://learn.microsoft.com/en-us/graph/permissions-overview?tabs=http

1.1 Application Permission:
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This allows server-to-server authentication without user interaction.

a.) Files.ReadWrite.All: To enable access to files across all SharePoint sites, add the Files.ReadWrite.All application permission.
Configure API Permissions: Navigate to API Permissions. Click on Add a permission button. Select Microsoft Graph. Then select Application Permission. Search for Files and check the flag Files.ReadWrite.All permission.



b.) Sites.FullControl.All: Grants the application full control over all site collections in the tenant without user interaction.

This permission allows the app to:
• Read and write all files in all SharePoint Online site collections
• Manage lists, document libraries, subsites, and site permissions
• Perform site-level actions across the entire tenant

Grant Admin consent for the newly added permission.



Client id : You can find it at Azure portal -> App Registration -> Overview:



Secret key: A new client secret needs to be created as well. Go to the "Certificate & secrets" and generate a new secret key. Click on New client secret.





Authentication related settings:

User name: Itt must start with "app_permission", then the Client ID separated with tilda.

    app_permission~<<Client ID>>

Password: Client Secret.
Tennant: The tenant id. Tenant: See your App registration -> Overview -> EndPoints. Based on the App Registration Account type it can be an ID, common, or consumer.
Provide the SharePoint-specific settings. See under the 1.3.Sharepoint-specific settings. ( Link: https://www.crushftp.com/crush10wiki/Wiki.jsp?page=SharePoint%20Integration#section-SharePoint+Integration-1.3.SharepointSpecificSettings

1.2 Delegated Permission:
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Client id : You can find it at Azure portal -> App Registration -> Overview:



Secret key: A new client secret needs to be created as well. Go to the "Certificate & secrets" and generate a new secret key. Click on New client secret.





SharePoint remote item settings:

!!! The CrushFTP admin page URL must match the redirect URL. In our example : http://localhost:9090

Select the SharePoint item type and click on the "Get Refresh Token" button. Provide the Client ID and Client Secret Value (not ID, see the screenshot), and Tenant (in almost all cases it is just: common).



Click on the "OK" button, log in with your Azure credentials, and allow CrushFTP to have access to your SharePoint files. After that the form will disappear and the username and password will be filled. Done.

1.3.Sharepoint-specific settings:
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_Site id : The SharePoint domain name.
Site Path: The path of the SharePoint site. It should start and end with a slash.
Drive name: Each SharePoint site has a document library where the site-related files are stored. See https://support.microsoft.com/en-us/office/what-is-a-document-library-3b5976dd-65cf-4c9e-bf5a-713c10ca2872 Provide its name.
Folder: Relative path of the document library of the SharePoint site.
Conflict Behaviour:
- Rename the file/folder if already exits
- Replace the file/folder if already exits
- Fail if the file/folder already exists

2. SharePoint REST service API-based integration
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Remote item name: Sharepoint2

More info : https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/get-to-know-the-sharepoint-rest-service?tabs=csom
!!!Constraint: On newer Sharepoint (after 2019) Grant App permission as it is disabled by default. To enable Custom Application APP Authentication run the following PowerShell commands:

Install-Module -Name Microsoft.Online.SharePoint.PowerShell
$adminUPN="<SharePoint administrator account>"
$orgName="<name of your Office 365 organization>"
$userCredential = Get-Credential -UserName $adminUPN -Message "Type the password."
Connect-SPOService -Url https://$orgName-admin.sharepoint.com -Credential $userCredential
get-spotenant | Select DisableCustomAppAuthentication
set-spotenant -DisableCustomAppAuthentication $false

Or

$creds = Get-Credential
$orgName="<name of your Office 365 organization>"
Connect-SPOService -Url https://$orgName-admin.sharepoint.com -Credential $creds
get-spotenant | Select DisableCustomAppAuthentication
set-spotenant -DisableCustomAppAuthentication $false

Advantage(Compared with MSGraph API Delegated Permission): Stream upload supported. There is no temporarily stored local file during the upload.

1. Register Add-In
Navigate and log in to the SharePoint online site. Got to the Register Add-In page by entering the URL as:

https://<sitename>.sharepoint.com/<<site path>>/_layouts/15/appregnew.aspx

Click the Generate button.



Store the Client ID and Client Secret and click on Create button.



2. Grant Permissions to Add-In

Navigate to:

 https://<sitename>.sharepoint.com/<<site path>>/_layouts/15/appinv.aspx

This will redirect to the Grant permission page. Enter the Client ID(generated earlier), in the AppId textbox and click the Lookup button.
Provide the permission Request xml and click on Create button.

Permission Request XML content:

<AppPermissionRequests AllowAppOnlyPolicy="true">
	<AppPermissionRequest Scope="http://sharepoint/content/sitecollection/web" Right="FullControl"/></AppPermissionRequests>

SharePoint2 remote item settings:

User name : The created Client ID
Password : The created Client Secret
Site id : The sharepoint domain name.
Site Path: The path of the SharePoint site. It should start and end with a slash.
Drive name: Each SharePoint site has a document library where the site-related files are stored. See https://support.microsoft.com/en-us/office/what-is-a-document-library-3b5976dd-65cf-4c9e-bf5a-713c10ca2872 Provide its name
Folder: Relative path of the document library of the sharepoint site.