(CkPython) Slack OAuth2

See more OAuth2 Examples

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

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import sys
import chilkat

# For more information about the OAuth2, see OAuth 2.0 Authorization Flow

oauth2 = chilkat.CkOAuth2()

# This example is for desktop applicatons (it is not for code that runs on a web server).

# Your applicaton must use your own public web server as an intermediate
# to receive and forward the redirect to localhost.
# See Using Your Web Server as an Intermediary for OAuth2 Redirect to localhost

# This is the Redirect URL defined for your Slack App in the Slack developer portal, and contains the above PHP.
oauth2.put_AppCallbackUrl("https://yourwebserver.com/oauth2_redirect")
oauth2.put_ListenPort(3017)

oauth2.put_AuthorizationEndpoint("https://slack.com/oauth/authorize")
oauth2.put_TokenEndpoint("https://slack.com/api/oauth.access")

# Replace these with actual values.
oauth2.put_ClientId("CLIENT_ID")
oauth2.put_ClientSecret("CLIENT_SECRET")

oauth2.put_Scope("team:read users:read")

# Begin the OAuth2 Authorization code 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()

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.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())

# Get the full JSON response:
json = chilkat.CkJsonObject()
json.Load(oauth2.accessTokenResponse())
json.put_EmitCompact(False)

# The JSON response looks like this:

# {
#   "ok": true,
#   "access_token": "xoxp-348475395242-348621810805-4768936228341-9f512b295124e7c9846ce63cb1464c4d",
#   "scope": "identify,team:read,users:read",
#   "user_id": "UA8HZRUPP",
#   "team_id": "TA3DZBN74",
#   "enterprise_id": null,
#   "team_name": "Chilkat Testing"
# }

print(json.emit())

# Save the JSON to a file for future requests.
fac = chilkat.CkFileAccess()
fac.WriteEntireTextFile("qa_data/tokens/slack.json",json.emit(),"utf-8",False)