This project is about connceting to gmail vai OAthu 2.0(orignal i.e 3-step)

Step 1 Authenticating user for Gmail access by requesting to

https://accounts.google.com/o/oauth2/auth? (GET/POST any method)

By

Scope : https://mail.google.com/

Application client id: ****************.apps.googleusercontent.com

redirect_url : http://localhost:14085/grantblank/ (or your server url )

TYPE : code

=============================================================== Step-2:

If every parameter is right than server will response with code to your redirect uri

From that u have to get your code

Than u have to request to Google server for access token to url

https://accounts.google.com/o/oauth2/token? ( POST method )

By

Application client id: ****************.apps.googleusercontent.com

Application secret id : **********************

Code : code u get from response

redirect_url : http://localhost:14085/grantblank/ (or your server url )

grant_type: authorization_code

Now if everything is fine u can get the access token from the response

======================================================================== Step-3:

Now u have access token

how to read the mail from this access token by following code

============================================================ 3.1

  https://developers.google.com/gmail/   
  
  https://developers.google.com/gmail/xoauth2_protocol  
  
  https://developers.google.com/gmail/xoauth2_libraries = (devlopers-google.py)

code

def GenerateOAuth2String(username, access_token, base64_encode=True):

auth_string = 'user=%s\1auth=Bearer %s\1\1' % (username, access_token)

if base64_encode:

auth_string = base64.b64encode(auth_string)

return auth_string

imap_conn = imaplib.IMAP4_SSL('imap.gmail.com') ## error in this connection

imap_conn.debug = 4

imap_conn.authenticate('XOAUTH2', lambda x: GenerateOAuth2String(username, access_token, base64_encode=True)) ##

method GenerateOAuth2String called from here to genrate OAuth2String

imap_conn.select('INBOX')

( Requirement )

For my Google app engine what I have done is my application is bill enabled to create socket

Python 2.7 (use this version )

Import ssl (no ssl in 2.5 )

See app.yaml for other setting

===========================================================================================

que-2 : 2-leged loginvia python script(code is working)

code :

import ssl

conn = imaplib.IMAP4_SSL("imap.gmail.com", 993)

conn.login(user, pwd)

conn.select()

print "logged in"

we can connect to gmail via 2-leged and can read mail from it.

the script for that is in the file "demo-2-leged.py "

but i want to know

Whether Google app script is 2-leged or not and if it is 2-leged than how to use it .

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