(Chilkat2-Python) Vonage UC Extend OAuth2

Get an OAuth2 access token for a desktop application for Vonage.

Note: This example requires Chilkat v10.1.2 or greater.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS

import sys
import chilkat2

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

oauth2 = chilkat2.OAuth2()

# This should be the port in the localhost callback URL for your app.  
# The callback URL would look like "http://localhost:3800/" if the port number is 3017.
oauth2.ListenPort = 3800

oauth2.AuthorizationEndpoint = "https://api.vonage.com/authorize"
oauth2.TokenEndpoint = "https://api.vonage.com/token"

# Replace these with actual values.
oauth2.ClientId = "CLIENT_ID"
oauth2.ClientSecret = "CLIENT_SECRET"
oauth2.CodeChallenge = False

oauth2.Scope = "openid"

# Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
url = oauth2.StartAuth()
if (oauth2.LastMethodSuccess != True):
    print(oauth2.LastErrorText)
    sys.exit()

print("url = " + url)

# Launch the default browser on the system and navigate to the url.
# The LaunchBrowser method was added in Chilkat v10.1.2.
success = oauth2.LaunchBrowser(url)
if (success == False):
    print(oauth2.LastErrorText)
    sys.exit()

# Wait for the user to approve or deny authorization in the browser.
numMsWaited = 0
while (numMsWaited < 90000) and (oauth2.AuthFlowState < 3) :
    oauth2.SleepMs(100)
    numMsWaited = numMsWaited + 100

# If the browser does not respond within the specified time, AuthFlowState will be:
# 
# 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
# 2: Waiting for Final Response - The thread is awaiting the final access token response.
# In either case, cancel the background task initiated by StartAuth.

if (oauth2.AuthFlowState < 3):
    oauth2.Cancel()
    print("No response from the browser!")
    sys.exit()

# Check AuthFlowState to determine if authorization was granted, denied, or failed:
# 
# 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
# 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
# 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if (oauth2.AuthFlowState == 5):
    print("OAuth2 failed to complete.")
    print(oauth2.FailureInfo)
    sys.exit()

if (oauth2.AuthFlowState == 4):
    print("OAuth2 authorization was denied.")
    print(oauth2.AccessTokenResponse)
    sys.exit()

if (oauth2.AuthFlowState != 3):
    print("Unexpected AuthFlowState:" + str(oauth2.AuthFlowState))
    sys.exit()

print("OAuth2 authorization granted!")
print("Access Token = " + oauth2.AccessToken)

# Get the full JSON response:
json = chilkat2.JsonObject()
json.Load(oauth2.AccessTokenResponse)
json.EmitCompact = False
print(json.Emit())

# The JSON response looks like this:

# {
#   "access_token": "XXXXXXXX-XXX-XXXX-XXXX-XXXXXXXXXXXX",
#   "refresh_token": "XXXXXXXX-XXX-XXXX-XXXX-XXXXXXXXXXXX",
#   "scope": "openid",
#   "id_token": "eyJ4NXQiOiJNem ... hA9tbDCiQRhdI4T0",
#   "token_type": "Bearer",
#   "expires_in": 3600
# }

# Save the JSON to a file for future requests.
fac = chilkat2.FileAccess()
fac.WriteEntireTextFile("qa_data/tokens/vonage_uc_extend.json",json.Emit(),"utf-8",False)