def __init__(self, cer=None, key=None, cer_pem=None, test=False):
self.files = {}
path_file_key = tmp_dir_o_file + id_generator(size=SIZE_NAME)
path_file_keypem = tmp_dir_o_file + id_generator(size=SIZE_NAME)
path_file_cer = tmp_dir_o_file + id_generator(size=SIZE_NAME)
if cer_pem is None:
path_file_cerpem = tmp_dir_o_file + id_generator(size=SIZE_NAME)
else:
path_file_cerpem = cer_pem
self.files["key"] = {"der": path_file_key, "pem": path_file_keypem}
self.files["cer"] = {
"der": path_file_cer,
"pem": path_file_cerpem,
"pubkey": None
}
self.files["sign"] = {
"digest": None,
"base64": None,
"o_string": None,
"sello": None,
"pkcs7": None
}
self.files["transform"] = {}
self.user_info_cer = None
self.test = test
if cer is not None:
save_file(path_file_cer, cer)
error = self.cer2pem()
if error:
self.clean()
raise Exception, "PEM", "No se puede convertir a pem el certificado"
if key is not None:
save_file(path_file_key, key)
def handle(self, *args, **options):
user_document_sign_id = options.get('user_document_sign_id', "")
user_document_sign = UserDocumentSign.objects.get(
id=user_document_sign_id)
transaction_number = user_document_sign.transaction.number
new_base_path_dir_pdf = "%sT%s" % (tmp_dir_pdf_file,
transaction_number)
new_base_path_dir_xml = "%sT%s" % (tmp_dir_xml_file,
transaction_number)
try:
pdf_file = user_document_sign.document.path
except SuspiciousFileOperation:
pdf_file = user_document_sign.document.url
try:
xml_file = user_document_sign.xml.path
except SuspiciousFileOperation:
xml_file = user_document_sign.xml.url
n_pdf_file = new_base_path_dir_pdf + "/" + id_generator(size=SIZE_NAME)
n_xml_file = new_base_path_dir_xml + "/" + id_generator(size=SIZE_NAME)
call(["cp", pdf_file, n_pdf_file])
call(["cp", xml_file, n_xml_file])
user_document_sign.document = n_pdf_file
user_document_sign.xml = n_xml_file
user_document_sign.save()
print("moved PDF from {}".format(pdf_file))
print("to {}".format(n_pdf_file))
print("moved XML from {}".format(xml_file))
print("to {}".format(n_xml_file))
os.remove(pdf_file)
os.remove(xml_file)
def sign(self, documento, password, issuer_cer_path, ocsp_cer, chain_cer):
VALID_CERT = [
"O=Servicio de Administraci\\xC3\\xB3n Tributaria", "O=Inmegen",
"0=Test CA"
]
data_info = self.get_info_cer()
error = self.key2pem(password)
if error:
self.clean()
return error, "PEM", "La contraseña es incorrecta"
elif not data_info["io"] in VALID_CERT:
self.clean()
return "", "SIGN", "El firmante del certificado no es válido"
elif not self.key_match_cer():
self.clean()
return "", "SIGN", "El certificado no corresponde a la llave"
elif not self.is_valid_ca_cer(chain_cer) and self.test is False:
self.clean()
return "", "SIGN", "El certificado no corresponde a la cadena de certificados"
elif not self.cert_is_valid(issuer_cer_path, ocsp_cer):
self.clean()
return "", "SIGN", "El certificado no es válido por el ocsp"
self.files["sign"]["digest"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
self.files["sign"]["base64"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
self.original_string(documento)
self.digest_binary(self.files["sign"]["o_string"],
self.files["sign"]["digest"])
self.base64(self.files["sign"]["digest"], self.files["sign"]["base64"])
def verify_digest(self):
pubkey = self.get_pubkey()
self.files["cer"]["pubkey"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
self.files["sign"]["sello"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
with open(self.files["cer"]["pubkey"], "wb") as f:
f.write(pubkey)
self.__dec(self.files["sign"]["sello"], self.files["sign"]["base64"])
return self.__verify_digest(
self.files["sign"]["sello"],
self.files["sign"]["o_string"]).find("Verified OK") != -1
def to_pkcs12(self, password):
self.key2pem(password)
self.__pkcs12(password)
tmp_file = tmp_dir_o_file + id_generator(size=SIZE_NAME)
self.base64(self.files["transform"]["pkcs12"], tmp_file)
with open(tmp_file, 'rb') as f:
base64 = f.read()
clean([tmp_file])
return base64
def __pkcs12(self, password):
self.files["transform"]["pkcs12"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
command = "openssl pkcs12 -export -inkey {key_pem} -in {cer_pem} -out {pfx_file} -password pass:{password}".format(
key_pem=self.files["key"]["pem"],
cer_pem=self.files["cer"]["pem"],
pfx_file=self.files["transform"]["pkcs12"],
password=password)
return command
def sign_pkcs7(self, pkcs7_dir, xml_url):
new_base_path_dir_pkcs7 = "{name_dir}/{name_file}".format(
name_dir=pkcs7_dir, name_file=id_generator(size=SIZE_NAME))
command = "openssl cms -sign -binary -nodetach -noattr -md sha256 -in {xml_file} -outform DER -out {pkcs7_file} -signer {cer_pem} -inkey {key_pem}".format(
xml_file=xml_url,
pkcs7_file=new_base_path_dir_pkcs7,
cer_pem=self.files["cer"]["pem"],
key_pem=self.files["key"]["pem"])
self.set_pkcs7(new_base_path_dir_pkcs7)
return command
def sign(password, cer, key, file_, test=True):
from django.conf import settings
import base64
cer_f = io.BytesIO(base64.b64decode(cer))
key_f = io.BytesIO(base64.b64decode(key))
tmp_file = "/tmp/" + id_generator(size=30)
with open(tmp_file, 'wb') as f:
f.write(base64.b64decode(file_))
digital_sign = GenericDigitalSign(cer=cer_f, key=key_f, test=test)
cer_f.close()
key_f.close()
organization = digital_sign.get_info_cer()["o"]
number = digital_sign.get_ocsp_origin()
OCSP_NUMBER = "C" + number
if test is True:
OCSP_NUMBER = "C0"
info = digital_sign.sign(tmp_file, password,
settings.CERTS[OCSP_NUMBER]["issuer"],
settings.CERTS[OCSP_NUMBER]["ocsp"],
settings.CERTS[OCSP_NUMBER]["chain"])
if info is not None:
return {"status": "error", "msg": info[2]}
#print("SIGN: ", digital_sign.verify_digest())
no_cert = digital_sign.get_no_certificado()
base64_sign = digital_sign.view_base64_sign()
clean([tmp_file])
digital_sign.clean()
return {
"status": "ok",
"data": {
"no_cert": no_cert,
"base64": base64_sign,
"organization": organization
}
}
def xslt_xml_transform(self, xml_filename):
self.files["sign"]["o_string"] = tmp_dir_o_file + id_generator(
size=SIZE_NAME)
command = "xsltproc {} {} --noout --output {}".format(
settings.XSLT, xml_filename, self.files["sign"]["o_string"])
return command
