(Ruby) Slack OAuth2

See more OAuth2 Examples

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

oauth2 = Chilkat::CkOAuth2.new()

# 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() + "\n";
    exit
end

print "url = " + url + "\n";

# 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() + "\n";
    exit
end

# 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
end

# 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!" + "\n";
    exit
end

# 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." + "\n";
    print oauth2.failureInfo() + "\n";
    exit
end

if (oauth2.get_AuthFlowState() == 4)
    print "OAuth2 authorization was denied." + "\n";
    print oauth2.accessTokenResponse() + "\n";
    exit
end

if (oauth2.get_AuthFlowState() != 3)
    print "Unexpected AuthFlowState:" + oauth2.get_AuthFlowState().to_s() + "\n";
    exit
end

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

# Get the full JSON response:
json = Chilkat::CkJsonObject.new()
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() + "\n";

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