Xbase++

Banco Inter OAuth2 Client Credentials

Generate an OAuth2 access token needed to consume the Inter APIs. Xbase++

LOCAL nSuccess
LOCAL oHttp
LOCAL oCert
LOCAL oBdPrivKey
LOCAL oPrivKey
LOCAL oReq
LOCAL oResp
LOCAL oJResp
LOCAL nRespStatusCode

nSuccess := 0

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

oHttp := CreateObject("Chilkat.Http")

//  First load the certificate and private key, and set as the HTTP object's client certificate.
oCert := CreateObject("Chilkat.Cert")
nSuccess := oCert:LoadFromFile("<nome arquivo certificado>.crt")
IF (nSuccess == 0)
    ? oCert:LastErrorText
    oHttp:destroy()
    oCert:destroy()
    RETURN
ENDIF

oBdPrivKey := CreateObject("Chilkat.BinData")
nSuccess := oBdPrivKey:LoadFile("<nome arquivo chave privada>.key")
IF (nSuccess == 0)
    ? "Failed to load <nome"
    oHttp:destroy()
    oCert:destroy()
    oBdPrivKey:destroy()
    RETURN
ENDIF

oPrivKey := CreateObject("Chilkat.PrivateKey")
nSuccess := oPrivKey:LoadAnyFormat(oBdPrivKey, "")
IF (nSuccess == 0)
    ? oPrivKey:LastErrorText
    oHttp:destroy()
    oCert:destroy()
    oBdPrivKey:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

nSuccess := oCert:SetPrivateKey(oPrivKey)
IF (nSuccess == 0)
    ? oCert:LastErrorText
    oHttp:destroy()
    oCert:destroy()
    oBdPrivKey:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

nSuccess := oHttp:SetSslClientCert(oCert)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oCert:destroy()
    oBdPrivKey:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

oReq := CreateObject("Chilkat.HttpRequest")
oReq:HttpVerb := "POST"
oReq:Path := "/oauth/v2/token"
oReq:ContentType := "application/x-www-form-urlencoded"
oReq:AddParam("grant_type", "client_credentials")
//  Requested scopes in OAuth2 are typically SPACE separated.
oReq:AddParam("scope", "boleto-cobranca.read boleto-cobranca.write")
oReq:AddHeader("accept", "application/json")

oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpReq("https://cdpj.partners.bancointer.com.br/oauth/v2/token", oReq, oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oCert:destroy()
    oBdPrivKey:destroy()
    oPrivKey:destroy()
    oReq:destroy()
    oResp:destroy()
    RETURN
ENDIF

oJResp := CreateObject("Chilkat.JsonObject")
oResp:GetBodyJson(oJResp)
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()
    oCert:destroy()
    oBdPrivKey:destroy()
    oPrivKey:destroy()
    oReq:destroy()
    oResp:destroy()
    oJResp:destroy()
    RETURN
ENDIF

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

? "Success."

oHttp:destroy()
oCert:destroy()
oBdPrivKey:destroy()
oPrivKey:destroy()
oReq:destroy()
oResp:destroy()
oJResp:destroy()