Xbase++

citi Developer OAuth2 Client Credentials Grant

See more OAuth2 Examples

Get access token for your application credentials. You can use this for citi APIs which do not require customer credential verification and consent (e.g. Onboarding). Xbase++

LOCAL nSuccess
LOCAL oHttp
LOCAL oReq
LOCAL oResp
LOCAL oSbResponseBody
LOCAL oJResp
LOCAL nRespStatusCode
LOCAL cToken_type
LOCAL cAccess_token
LOCAL nExpires_in
LOCAL nConsented_on
LOCAL cScope

nSuccess := 0

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

oHttp := CreateObject("Chilkat.Http")

//  Implements the following CURL command:

//  curl --request POST \
//    --url https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb \
//    --header 'accept: application/json' \
//    --user client-id:client-secret \
//    --header 'content-type: application/x-www-form-urlencoded' \
//    --data 'grant_type=client_credentials&scope=%2Fapi'

oHttp:Login := "client-id"
oHttp:Password := "client-secret"

oReq := CreateObject("Chilkat.HttpRequest")
oReq:HttpVerb := "POST"
oReq:Path := "/gcb/api/clientCredentials/oauth2/token/us/gcb"
oReq:ContentType := "application/x-www-form-urlencoded"
oReq:AddParam("grant_type", "client_credentials")
oReq:AddParam("scope", "/api")
oReq:AddHeader("accept", "application/json")

oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpReq("https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb", oReq, oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oReq:destroy()
    oResp:destroy()
    RETURN
ENDIF

oSbResponseBody := CreateObject("Chilkat.StringBuilder")
oResp:GetBodySb(oSbResponseBody)
oJResp := CreateObject("Chilkat.JsonObject")
oJResp:LoadSb(oSbResponseBody)
oJResp:EmitCompact := 0

? "Response Body:"
? oJResp:Emit()

nRespStatusCode := oResp:StatusCode
? "Response Status Code = " + Str(nRespStatusCode)
IF (nRespStatusCode >= 400)
    ? "Response Header:"
    ? oResp:Header
    ? "Failed."
    oHttp:destroy()
    oReq:destroy()
    oResp:destroy()
    oSbResponseBody:destroy()
    oJResp:destroy()
    RETURN
ENDIF

nSuccess := oJResp:WriteFile("qa_data/tokens/citi_client_credentials.json")
IF (nSuccess == 0)
    ? "Failed to save JSON access token file."
    oHttp:destroy()
    oReq:destroy()
    oResp:destroy()
    oSbResponseBody:destroy()
    oJResp:destroy()
    RETURN
ENDIF

//   Sample JSON response:
//   (Sample code for parsing the JSON response is shown below)

//   {
//     "token_type": "bearer",
//     "access_token": "AAIkMjdh ... 3fsWb7zJ0s",
//     "expires_in": 1800,
//     "consented_on": 1584817860,
//     "scope": "/api"
//   }

//   Sample code for parsing the JSON response...
//   Use the following online tool to generate parsing code from sample JSON:
//   Generate Parsing Code from JSON

cToken_type := oJResp:StringOf("token_type")
cAccess_token := oJResp:StringOf("access_token")
nExpires_in := oJResp:IntOf("expires_in")
nConsented_on := oJResp:IntOf("consented_on")
cScope := oJResp:StringOf("scope")

oHttp:destroy()
oReq:destroy()
oResp:destroy()
oSbResponseBody:destroy()
oJResp:destroy()