(Tcl) Banco Inter OAuth2 Client Credentials

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

For more information, see https://developers.bancointer.com.br/reference/token-3

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load ./chilkat.dll

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

set http [new_CkHttp]

# First load the certificate and private key, and set as the HTTP object's client certificate.
set cert [new_CkCert]

set success [CkCert_LoadFromFile $cert "<nome arquivo certificado>.crt"]
if {$success == 0} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkHttp $http
    delete_CkCert $cert
    exit
}

set bdPrivKey [new_CkBinData]

set success [CkBinData_LoadFile $bdPrivKey "<nome arquivo chave privada>.key"]
if {$success == 0} then {
    puts "Failed to load <nome"
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    exit
}

set privKey [new_CkPrivateKey]

set success [CkPrivateKey_LoadAnyFormat $privKey $bdPrivKey ""]
if {$success == 0} then {
    puts [CkPrivateKey_lastErrorText $privKey]
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    exit
}

set success [CkCert_SetPrivateKey $cert $privKey]
if {$success == 0} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    exit
}

set success [CkHttp_SetSslClientCert $http $cert]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    exit
}

set req [new_CkHttpRequest]

CkHttpRequest_put_HttpVerb $req "POST"
CkHttpRequest_put_Path $req "/oauth/v2/token"
CkHttpRequest_put_ContentType $req "application/x-www-form-urlencoded"
CkHttpRequest_AddParam $req "grant_type" "client_credentials"
# Requested scopes in OAuth2 are typically SPACE separated.
CkHttpRequest_AddParam $req "scope" "boleto-cobranca.read boleto-cobranca.write"
CkHttpRequest_AddHeader $req "accept" "application/json"

# resp is a CkHttpResponse
set resp [CkHttp_PostUrlEncoded $http "https://cdpj.partners.bancointer.com.br/oauth/v2/token" $req]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    delete_CkHttpRequest $req
    exit
}

set jResp [new_CkJsonObject]

CkHttpResponse_GetBodyJson $resp $jResp
CkJsonObject_put_EmitCompact $jResp 0

puts "Response Body:"
puts [CkJsonObject_emit $jResp]

set respStatusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response Status Code = $respStatusCode"
if {$respStatusCode >= 400} then {
    puts "Response Header:"
    puts [CkHttpResponse_header $resp]
    puts "Failed."
    delete_CkHttpResponse $resp

    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    delete_CkHttpRequest $req
    delete_CkJsonObject $jResp
    exit
}

delete_CkHttpResponse $resp

set success [CkJsonObject_WriteFile $jResp "qa_data/tokens/banco_inter_client_credentials.json"]
if {$success == 0} then {
    puts "Failed to save JSON access token file."
    delete_CkHttp $http
    delete_CkCert $cert
    delete_CkBinData $bdPrivKey
    delete_CkPrivateKey $privKey
    delete_CkHttpRequest $req
    delete_CkJsonObject $jResp
    exit
}

puts "Success."

delete_CkHttp $http
delete_CkCert $cert
delete_CkBinData $bdPrivKey
delete_CkPrivateKey $privKey
delete_CkHttpRequest $req
delete_CkJsonObject $jResp