(Tcl) SharePoint OAuth2 Client Credentials Authentication

See more SharePoint Online Examples

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.)

Note: This example uses the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

set http [new_CkHttp]

# Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
# access token as needed.
# This is the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.  
set jsonOAuthCC [new_CkJsonObject]

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

# Use the values from your App Registration in Azure.
CkJsonObject_UpdateString $jsonOAuthCC "client_id" "e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx"
CkJsonObject_UpdateString $jsonOAuthCC "client_secret" "K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx"

# 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.
CkJsonObject_UpdateString $jsonOAuthCC "scope" "https://graph.microsoft.com/.default"

# The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
CkJsonObject_UpdateString $jsonOAuthCC "token_endpoint" "https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token"

# Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
CkHttp_put_AuthToken $http [CkJsonObject_emit $jsonOAuthCC]

# Get information about all SharePoint sites.
set sbJson [new_CkStringBuilder]

set success [CkHttp_QuickGetSb $http "https://graph.microsoft.com/v1.0/sites/getAllSites" $sbJson]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $jsonOAuthCC
    delete_CkStringBuilder $sbJson
    exit
}

set statusCode [CkHttp_get_LastStatus $http]

puts "Response status code = $statusCode"

if {$statusCode != 200} then {
    puts [CkStringBuilder_getAsString $sbJson]
    puts "Failed."
    delete_CkHttp $http
    delete_CkJsonObject $jsonOAuthCC
    delete_CkStringBuilder $sbJson
    exit
}

set jsonResp [new_CkJsonObject]

CkJsonObject_LoadSb $jsonResp $sbJson
CkJsonObject_put_EmitCompact $jsonResp 0

puts [CkJsonObject_emit $jsonResp]
puts "Success."

delete_CkHttp $http
delete_CkJsonObject $jsonOAuthCC
delete_CkStringBuilder $sbJson
delete_CkJsonObject $jsonResp