Xbase++ Requires Chilkat v10.1.2+

X.com OAuth 2.0 Refresh Access Token

See more X Examples

Demonstrates how to get an X.com OAuth2 access token from a desktop application or script. Xbase++

LOCAL nSuccess
LOCAL oJsonToken
LOCAL oOauth2
LOCAL oDtExpire
LOCAL oSbJson

nSuccess := 0

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

oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/x.json")
IF (nSuccess != 1)
    ? "Failed to load x.json"
    oJsonToken:destroy()
    RETURN
ENDIF

//  The access token JSON looks something like this:

//  {
//    "token_type": "bearer",
//    "expires_in": 7200,
//    "access_token": "VmNDLVZiYUZwejY5Mkx3RblFTmo3ek1leTRGclMuZFVOUTVUTWpNbVZKb1N5OjE3NDAxNjk4MDVxNTE6MToxOaF0OjE",
//    "scope": "block.read follows.read offline.access tweet.write block.write like.write like.read users.read tweet.read follows.write",
//    "refresh_token": "eThOWVVFSTRqdVp3QTFndGsxM2ZGZmFyNWVrU0phM1JKbGdrbGNWRGJzb1loOjE3NDAwMjk4MDUxNTI6MTowOnJ0OjE"
//  }

oOauth2 := CreateObject("Chilkat.OAuth2")

oOauth2:TokenEndpoint := "https://api.x.com/2/oauth2/token"

//  Replace this with your actual X.com OAuth2 Client ID and Client Secret
oOauth2:ClientId := "OAUTH2_CLIENT_ID"
oOauth2:ClientSecret := "OAUTH2_CLIENT_SECRET"

//  Get the "refresh_token"
oOauth2:RefreshToken := oJsonToken:StringOf("refresh_token")

//  Send the HTTP POST to refresh the access token..
nSuccess := oOauth2:RefreshAccessToken()
IF (nSuccess != 1)
    ? oOauth2:LastErrorText
    oJsonToken:destroy()
    oOauth2:destroy()
    RETURN
ENDIF

//  Load the access token response into the json object 
oJsonToken:Load(oOauth2:AccessTokenResponse)

//  If an "expires_on" member does not exist, then add the JSON member by
//  getting the current system date/time and adding the "expires_in" seconds.
//  This way we'll know when the token expires.
IF (oJsonToken:HasMember("expires_on") == 0)
    oDtExpire := CreateObject("Chilkat.CkDateTime")
    oDtExpire:SetFromCurrentSystemTime()
    oDtExpire:AddSeconds(oJsonToken:IntOf("expires_in"))
    oJsonToken:AppendString("expires_on", oDtExpire:GetAsUnixTimeStr(0))
ENDIF

//  Save the new JSON access token response to a file.
//  The access + refresh tokens contained in this JSON will be needed for the next refresh.
oSbJson := CreateObject("Chilkat.StringBuilder")
oJsonToken:EmitCompact := 0
oJsonToken:EmitSb(oSbJson)
oSbJson:WriteFile("qa_data/tokens/x.json", "utf-8", 0)

? "OAuth2 authorization granted!"
? "New Access Token = " + oOauth2:AccessToken

oJsonToken:destroy()
oOauth2:destroy()
oDtExpire:destroy()
oSbJson:destroy()