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(Tcl) Office365 OAuth2 Resource Owner Password Credentials Grant for SMTP, IMAP, POP

Demonstrates how to get an OAuth2 access token for use with Office 365 in the SMTP, IMAP, and POP3 protocols using the resource owner password credentials grant.

This is a way of getting an OAuth2 access token for the O365 account you own, WITHOUT needing to grant access interactively via a browser.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

# Get an OAuth2 access token by sending a POST like this:

# 	POST {tenant}/oauth2/v2.0/token
# 	Host: login.microsoftonline.com
# 	Content-Type: application/x-www-form-urlencoded
# 
# 	client_id=6731de76-14a6-49ae-97bc-6eba6914391e
# 	&client_secret=*****************
# 	&scope=user.read%20openid%20profile%20offline_access
# 	&username=MyUsername@myTenant.com
# 	&password=SuperS3cret
# 	&grant_type=password

set http [new_CkHttp]

set req [new_CkHttpRequest]

# Use the application ID for the client_id.
# (In Azure App Registrations, use the Application (client) ID)
CkHttpRequest_AddParam $req "client_id" "CLIENT_ID"
CkHttpRequest_AddParam $req "client_secret" "CLIENT_SECRET"

CkHttpRequest_AddParam $req "scope" "openid profile offline_access https://outlook.office365.com/SMTP.Send https://outlook.office365.com/POP.AccessAsUser.All https://outlook.office365.com/IMAP.AccessAsUser.All"
CkHttpRequest_AddParam $req "username" "my_email_address"
CkHttpRequest_AddParam $req "password" "my_email_password"
CkHttpRequest_AddParam $req "grant_type" "password"

# resp is a CkHttpResponse

# Replace "{tenant}" with your tenant ID, such as "112d7ed6-71bf-4eba-a866-738364321bfc".
set resp [CkHttp_PostUrlEncoded $http "https://login.microsoftonline.com/{tenant}/oauth2/v2.0/token" $req]
if {[CkHttp_get_LastMethodSuccess $http] != 1} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkHttpRequest $req
    exit
}

set statusCode [CkHttpResponse_get_StatusCode $resp]
puts "response status code: $statusCode"
puts "response body:"
puts [CkHttpResponse_bodyStr $resp]

# The successful JSON response looks like this:

# 
# {
#   "token_type": "Bearer",
#   "scope": "https://outlook.office365.com/IMAP.AccessAsUser.All https://outlook.office365.com/POP.AccessAsUser.All https://outlook.office365.com/SMTP.Send",
#   "expires_in": 3599,
#   "ext_expires_in": 3599,
#   "access_token": "eyJ0eX ... 62Nyw",
#   "refresh_token": "0.AAAA1n4t ... tNxyA",
#   "id_token": "eyJ0eXA ... qdIGyOYw"
# }

# Save the JSON to a file for future requests.
if {$statusCode == 200} then {
    set fac [new_CkFileAccess]

    CkFileAccess_WriteEntireTextFile $fac "qa_data/tokens/office365.json" [CkHttpResponse_bodyStr $resp] "utf-8" 0
}

delete_CkHttpResponse $resp


delete_CkHttp $http
delete_CkHttpRequest $req
delete_CkFileAccess $fac

 

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