/*
- Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
+/** @file src/signer.cc
+ * @brief Signer class.
+ */
+
+#include "signer.h"
+#include "exceptions.h"
+#include <libcxml/cxml.h>
#include <libxml++/libxml++.h>
#include <xmlsec/xmldsig.h>
#include <xmlsec/dl.h>
#include <xmlsec/app.h>
-#include "signer.h"
-#include "exceptions.h"
+#include <xmlsec/crypto.h>
using std::string;
using std::list;
+using std::cout;
using boost::shared_ptr;
-using namespace libdcp;
+using namespace dcp;
-/** @param signer_key Filename of private key to sign with */
+/** Add a <Signer> and <ds:Signature> nodes to an XML node.
+ * @param parent XML node to add to.
+ * @param standard INTEROP or SMPTE.
+ */
void
-Signer::sign (xmlpp::Element* parent, bool interop) const
+Signer::sign (xmlpp::Element* parent, Standard standard) const
{
- add_signer (parent, "dsig");
+ /* <Signer> */
+
+ xmlpp::Element* signer = parent->add_child("Signer");
+ xmlpp::Element* data = signer->add_child("X509Data", "dsig");
+ xmlpp::Element* serial_element = data->add_child("X509IssuerSerial", "dsig");
+ serial_element->add_child("X509IssuerName", "dsig")->add_child_text (_certificates.leaf()->issuer());
+ serial_element->add_child("X509SerialNumber", "dsig")->add_child_text (_certificates.leaf()->serial());
+ data->add_child("X509SubjectName", "dsig")->add_child_text (_certificates.leaf()->subject());
+ /* <Signature> */
+
xmlpp::Element* signature = parent->add_child("Signature", "dsig");
- {
- xmlpp::Element* signed_info = signature->add_child ("SignedInfo", "dsig");
- signed_info->add_child("CanonicalizationMethod", "dsig")->set_attribute ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315");
-
- if (interop) {
- signed_info->add_child("SignatureMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#rsa-sha1");
- } else {
- signed_info->add_child("SignatureMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256");
- }
-
- {
- xmlpp::Element* reference = signed_info->add_child("Reference", "dsig");
- reference->set_attribute ("URI", "");
- {
- xmlpp::Element* transforms = reference->add_child("Transforms", "dsig");
- transforms->add_child("Transform", "dsig")->set_attribute (
- "Algorithm", "http://www.w3.org/2000/09/xmldsig#enveloped-signature"
- );
- }
- reference->add_child("DigestMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#sha1");
- /* This will be filled in by the signing later */
- reference->add_child("DigestValue", "dsig");
- }
+ xmlpp::Element* signed_info = signature->add_child ("SignedInfo", "dsig");
+ signed_info->add_child("CanonicalizationMethod", "dsig")->set_attribute ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315");
+
+ if (standard == INTEROP) {
+ signed_info->add_child("SignatureMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#rsa-sha1");
+ } else {
+ signed_info->add_child("SignatureMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256");
}
+ xmlpp::Element* reference = signed_info->add_child("Reference", "dsig");
+ reference->set_attribute ("URI", "");
+
+ xmlpp::Element* transforms = reference->add_child("Transforms", "dsig");
+ transforms->add_child("Transform", "dsig")->set_attribute (
+ "Algorithm", "http://www.w3.org/2000/09/xmldsig#enveloped-signature"
+ );
+
+ reference->add_child("DigestMethod", "dsig")->set_attribute("Algorithm", "http://www.w3.org/2000/09/xmldsig#sha1");
+ /* This will be filled in by the signing later */
+ reference->add_child("DigestValue", "dsig");
+
+ signature->add_child("SignatureValue", "dsig");
+ signature->add_child("KeyInfo", "dsig");
add_signature_value (signature, "dsig");
}
-/** Sign an XML node. This function takes a certificate chain (to prove that the sender is bona fide) and
- * a private key with which to sign the node.
+/** Sign an XML node.
*
* @param parent Node to sign.
- * @param certificates Certificate chain for the signer.
- * @param signer_key Filename of the private key of the signer.
* @param ns Namespace to use for the signature XML nodes.
*/
void
-Signer::add_signature_value (xmlpp::Element* parent, string ns) const
+Signer::add_signature_value (xmlpp::Node* parent, string ns) const
{
- parent->add_child("SignatureValue", ns);
+ cxml::Node cp (parent);
+ xmlpp::Node* key_info = cp.node_child("KeyInfo")->node ();
- /* Add the certificate chain to a KeyInfo child node of parent */
- xmlpp::Element* key_info = parent->add_child("KeyInfo", ns);
+ /* Add the certificate chain to the KeyInfo child node of parent */
list<shared_ptr<Certificate> > c = _certificates.leaf_to_root ();
for (list<shared_ptr<Certificate> >::iterator i = c.begin(); i != c.end(); ++i) {
xmlpp::Element* data = key_info->add_child("X509Data", ns);
throw MiscError ("could not create signature context");
}
- signature_context->signKey = xmlSecCryptoAppKeyLoad (_key.c_str(), xmlSecKeyDataFormatPem, 0, 0, 0);
+ signature_context->signKey = xmlSecCryptoAppKeyLoad (_key.string().c_str(), xmlSecKeyDataFormatPem, 0, 0, 0);
if (signature_context->signKey == 0) {
- throw FileError ("could not load private key file", _key);
+ throw FileError ("could not load private key file", _key, 0);
}
/* XXX: set key name to the file name: is this right? */
xmlSecDSigCtxDestroy (signature_context);
}
-
-void
-Signer::add_signer (xmlpp::Element* parent, string ns) const
-{
- xmlpp::Element* signer = parent->add_child("Signer");
-
- {
- xmlpp::Element* data = signer->add_child("X509Data", ns);
-
- {
- xmlpp::Element* serial_element = data->add_child("X509IssuerSerial", ns);
- serial_element->add_child("X509IssuerName", ns)->add_child_text (_certificates.leaf()->issuer());
- serial_element->add_child("X509SerialNumber", ns)->add_child_text (_certificates.leaf()->serial());
- }
-
- data->add_child("X509SubjectName", ns)->add_child_text (_certificates.leaf()->subject());
- }
-}
projects / libdcp.git / blobdiff