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CkPython Requires Chilkat v10.1.2+

Salesforce OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to get a Salesforce OAuth2 access token from a desktop application or script.

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CkPython 
import sys
import chilkat

success = False

#  To further clarify, see OAuth 2.0 Authorization Flow

oauth2 = chilkat.CkOAuth2()

#  This should be the port in the localhost callback URL for your connected app.  
#  The callback URL would look like "http://localhost:3017/" if the port number is 3017.
oauth2.put_ListenPort(3017)

oauth2.put_AuthorizationEndpoint("https://login.salesforce.com/services/oauth2/authorize")
oauth2.put_TokenEndpoint("https://login.salesforce.com/services/oauth2/token")

#  Replace this with your actual client ID (Consumer Key)
oauth2.put_ClientId("CLIENT_ID")

#  We don't have to include the client secret.
#  See the screenshot of our Connected App below..

#  This is for Require Proof Key for Code Exchange (PKCE)
#  See OAuth2 PKCE Explained
oauth2.put_CodeChallenge(True)
oauth2.put_CodeChallengeMethod("S256")

#  To force the OAuth consent screen to reappear (even if previously granted), use:
oauth2.AddAuthQueryParam("prompt","consent")

#  Begin the OAuth2 authorization flow.  This returns a URL that should be loaded in a browser.
url = oauth2.startAuth()
if (oauth2.get_LastMethodSuccess() != True):
    print(oauth2.lastErrorText())
    sys.exit()

#  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.get_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.get_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.get_AuthFlowState() == 5):
    print("OAuth2 failed to complete.")
    print(oauth2.failureInfo())
    sys.exit()

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

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

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

#  Save the full JSON access token response to a file.
sbJson = chilkat.CkStringBuilder()
sbJson.Append(oauth2.accessTokenResponse())
sbJson.WriteFile("qa_data/tokens/_salesforce.json","utf-8",False)

#  The saved JSON response looks like this:

#  {
#    "access_token": "00D41000....uLZBpT6",
#    "refresh_token": "5Aep....25xdGgkrV",
#    "signature": "cjTbSc5DvcKpaMoRTzuQTJLb1tcMw8LEO01flq4aMD4=",
#    "scope": "refresh_token id",
#    "instance_url": "https://d41000000f8a0eak-dev-ed.my.salesforce.com",
#    "id": "https://login.salesforce.com/id/00D41000000F8A0EAK/005410000....xAAE",
#    "token_type": "Bearer",
#    "issued_at": "1738348388166"
#  }

#  --------------------------------------------------------------------------
#  Here's a screenshot of a Salesforce Connected App 
#  with the correct Callback URL for this example,
#  and also selects "Require Proof Key for Code Exchange (PKCE)"
#  and does not requires the secret for the authorization or refresh flow,
#  and also allows for the Client Credentials flow.
#  image