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/*
* Copyright (c) 2010 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swiften/TLS/OpenSSL/OpenSSLCertificate.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/Base/Log.h>
#undef X509_NAME // Windows.h defines this, and for some reason, it doesn't get undeffed properly in x509.h
#include <openssl/x509v3.h>
#pragma GCC diagnostic ignored "-Wold-style-cast"
namespace Swift {
OpenSSLCertificate::OpenSSLCertificate(boost::shared_ptr<X509> cert) : cert(cert) {
parse();
}
OpenSSLCertificate::OpenSSLCertificate(const ByteArray& der) {
#if OPENSSL_VERSION_NUMBER <= 0x009070cfL
unsigned char* p = const_cast<unsigned char*>(der.getData());
#else
const unsigned char* p = der.getData();
#endif
cert = boost::shared_ptr<X509>(d2i_X509(NULL, &p, der.getSize()), X509_free);
if (!cert) {
SWIFT_LOG(warning) << "Error creating certificate from DER data" << std::endl;
}
parse();
}
ByteArray OpenSSLCertificate::toDER() const {
if (!cert) {
return ByteArray();
}
ByteArray result;
result.resize(i2d_X509(cert.get(), NULL));
unsigned char* p = reinterpret_cast<unsigned char*>(result.getData());
i2d_X509(cert.get(), &p);
return result;
}
void OpenSSLCertificate::parse() {
if (!cert) {
return;
}
// Subject name
X509_NAME* subjectName = X509_get_subject_name(cert.get());
if (subjectName) {
// Subject name
ByteArray subjectNameData;
subjectNameData.resize(256);
X509_NAME_oneline(X509_get_subject_name(cert.get()), reinterpret_cast<char*>(subjectNameData.getData()), subjectNameData.getSize());
this->subjectName = std::string(reinterpret_cast<const char*>(subjectNameData.getData()));
// Common name
int cnLoc = X509_NAME_get_index_by_NID(subjectName, NID_commonName, -1);
while (cnLoc != -1) {
X509_NAME_ENTRY* cnEntry = X509_NAME_get_entry(subjectName, cnLoc);
ASN1_STRING* cnData = X509_NAME_ENTRY_get_data(cnEntry);
commonNames.push_back(ByteArray(cnData->data, cnData->length).toString());
cnLoc = X509_NAME_get_index_by_NID(subjectName, NID_commonName, cnLoc);
}
}
// subjectAltNames
int subjectAltNameLoc = X509_get_ext_by_NID(cert.get(), NID_subject_alt_name, -1);
if(subjectAltNameLoc != -1) {
X509_EXTENSION* extension = X509_get_ext(cert.get(), subjectAltNameLoc);
boost::shared_ptr<GENERAL_NAMES> generalNames(reinterpret_cast<GENERAL_NAMES*>(X509V3_EXT_d2i(extension)), GENERAL_NAMES_free);
boost::shared_ptr<ASN1_OBJECT> xmppAddrObject(OBJ_txt2obj(ID_ON_XMPPADDR_OID, 1), ASN1_OBJECT_free);
boost::shared_ptr<ASN1_OBJECT> dnsSRVObject(OBJ_txt2obj(ID_ON_DNSSRV_OID, 1), ASN1_OBJECT_free);
for (int i = 0; i < sk_GENERAL_NAME_num(generalNames.get()); ++i) {
GENERAL_NAME* generalName = sk_GENERAL_NAME_value(generalNames.get(), i);
if (generalName->type == GEN_OTHERNAME) {
OTHERNAME* otherName = generalName->d.otherName;
if (OBJ_cmp(otherName->type_id, xmppAddrObject.get()) == 0) {
// XmppAddr
if (otherName->value->type != V_ASN1_UTF8STRING) {
continue;
}
ASN1_UTF8STRING* xmppAddrValue = otherName->value->value.utf8string;
addXMPPAddress(ByteArray(ASN1_STRING_data(xmppAddrValue), ASN1_STRING_length(xmppAddrValue)).toString());
}
else if (OBJ_cmp(otherName->type_id, dnsSRVObject.get()) == 0) {
// SRVName
if (otherName->value->type != V_ASN1_IA5STRING) {
continue;
}
ASN1_IA5STRING* srvNameValue = otherName->value->value.ia5string;
addSRVName(ByteArray(ASN1_STRING_data(srvNameValue), ASN1_STRING_length(srvNameValue)).toString());
}
}
else if (generalName->type == GEN_DNS) {
// DNSName
addDNSName(ByteArray(ASN1_STRING_data(generalName->d.dNSName), ASN1_STRING_length(generalName->d.dNSName)).toString());
}
}
}
}
}
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Swift