Lianja

SharePoint OAuth2 Client Credentials Authentication

Demonstrates how to authenticate with OAuth 2.0 using the client credentials grant type. This is for SharePoint Online which is the cloud-based service provided by Microsoft as part of Office 365. (Users access SharePoint Online through a web browser, and the service is hosted on Microsoft's servers.) Lianja

llSuccess = .F.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loHttp = createobject("CkHttp")

// Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
// access token as needed.
loJsonOAuthCC = createobject("CkJsonObject")

// --------------------------------------------------------------------------------------------------------
// You'll need to have registered an app in Azure beforehand.
// See How to Create SharePoint App Registration for OAuth 2.0 Client Credentials
// --------------------------------------------------------------------------------------------------------

// Use the values from your App Registration in Azure.
loJsonOAuthCC.UpdateString("client_id","CLIENT_ID")
loJsonOAuthCC.UpdateString("client_secret","SECRET_VALUE")

// You'll always use this scope for client credentials, because the allowed actions
// are determined by the App Permissions defined when you registered the app in Azure.
loJsonOAuthCC.UpdateString("scope","https://graph.microsoft.com/.default")

// The token endpoint includes your tenant ID. 
loJsonOAuthCC.UpdateString("token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token")

// Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
loHttp.AuthToken = loJsonOAuthCC.Emit()

// Get information about all SharePoint sites.
loSbJson = createobject("CkStringBuilder")
llSuccess = loHttp.QuickGetSb("https://graph.microsoft.com/v1.0/sites/getAllSites",loSbJson)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loHttp
    release loJsonOAuthCC
    release loSbJson
    return
endif

lnStatusCode = loHttp.LastStatus

? "Response status code = " + str(lnStatusCode)

if (lnStatusCode <> 200) then
    ? loSbJson.GetAsString()
    ? "Failed."
    release loHttp
    release loJsonOAuthCC
    release loSbJson
    return
endif

loJsonResp = createobject("CkJsonObject")
loJsonResp.LoadSb(loSbJson)
loJsonResp.EmitCompact = .F.

? loJsonResp.Emit()
? "Success."

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON


release loHttp
release loJsonOAuthCC
release loSbJson
release loJsonResp