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283 lines (224 loc) · 6.19 KB
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//
// X509Certificate.cpp
//
// $Id: //poco/1.4/Crypto/src/X509Certificate.cpp#1 $
//
// Library: Crypto
// Package: Certificate
// Module: X509Certificate
//
// Copyright (c) 2006-2009, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Crypto/X509Certificate.h"
#include "Poco/StreamCopier.h"
#include "Poco/String.h"
#include "Poco/DateTimeParser.h"
#include <sstream>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/evp.h>
namespace Poco {
namespace Crypto {
X509Certificate::X509Certificate(std::istream& istr):
_pCert(0)
{
load(istr);
}
X509Certificate::X509Certificate(const std::string& path):
_pCert(0)
{
load(path);
}
X509Certificate::X509Certificate(X509* pCert):
_pCert(pCert)
{
poco_check_ptr(_pCert);
init();
}
X509Certificate::X509Certificate(X509* pCert, bool shared):
_pCert(pCert)
{
poco_check_ptr(_pCert);
if (shared)
{
_pCert->references++;
}
init();
}
X509Certificate::X509Certificate(const X509Certificate& cert):
_issuerName(cert._issuerName),
_subjectName(cert._subjectName),
_pCert(cert._pCert)
{
_pCert = X509_dup(_pCert);
}
X509Certificate& X509Certificate::operator = (const X509Certificate& cert)
{
X509Certificate tmp(cert);
swap(tmp);
return *this;
}
void X509Certificate::swap(X509Certificate& cert)
{
using std::swap;
swap(cert._issuerName, _issuerName);
swap(cert._subjectName, _subjectName);
swap(cert._pCert, _pCert);
}
X509Certificate::~X509Certificate()
{
X509_free(_pCert);
}
void X509Certificate::load(std::istream& istr)
{
poco_assert (!_pCert);
std::stringstream certStream;
Poco::StreamCopier::copyStream(istr, certStream);
std::string cert = certStream.str();
BIO *pBIO = BIO_new_mem_buf(const_cast<char*>(cert.data()), static_cast<int>(cert.size()));
if (!pBIO) throw Poco::IOException("Cannot create BIO for reading certificate");
_pCert = PEM_read_bio_X509(pBIO, 0, 0, 0);
BIO_free(pBIO);
if (!_pCert) throw Poco::IOException("Faild to load certificate from stream");
init();
}
void X509Certificate::load(const std::string& path)
{
poco_assert (!_pCert);
BIO *pBIO = BIO_new(BIO_s_file());
if (!pBIO) throw Poco::IOException("Cannot create BIO for reading certificate file", path);
if (!BIO_read_filename(pBIO, path.c_str()))
{
BIO_free(pBIO);
throw Poco::OpenFileException("Cannot open certificate file for reading", path);
}
_pCert = PEM_read_bio_X509(pBIO, 0, 0, 0);
BIO_free(pBIO);
if (!_pCert) throw Poco::ReadFileException("Faild to load certificate from", path);
init();
}
void X509Certificate::save(std::ostream& stream) const
{
BIO *pBIO = BIO_new(BIO_s_mem());
if (!pBIO) throw Poco::IOException("Cannot create BIO for writing certificate");
try
{
if (!PEM_write_bio_X509(pBIO, _pCert))
throw Poco::IOException("Failed to write certificate to stream");
char *pData;
long size;
size = BIO_get_mem_data(pBIO, &pData);
stream.write(pData, size);
}
catch (...)
{
BIO_free(pBIO);
throw;
}
BIO_free(pBIO);
}
void X509Certificate::save(const std::string& path) const
{
BIO *pBIO = BIO_new(BIO_s_file());
if (!pBIO) throw Poco::IOException("Cannot create BIO for reading certificate file", path);
if (!BIO_write_filename(pBIO, const_cast<char*>(path.c_str())))
{
BIO_free(pBIO);
throw Poco::CreateFileException("Cannot create certificate file", path);
}
try
{
if (!PEM_write_bio_X509(pBIO, _pCert))
throw Poco::WriteFileException("Failed to write certificate to file", path);
}
catch (...)
{
BIO_free(pBIO);
throw;
}
BIO_free(pBIO);
}
void X509Certificate::init()
{
char buffer[NAME_BUFFER_SIZE];
X509_NAME_oneline(X509_get_issuer_name(_pCert), buffer, sizeof(buffer));
_issuerName = buffer;
X509_NAME_oneline(X509_get_subject_name(_pCert), buffer, sizeof(buffer));
_subjectName = buffer;
}
std::string X509Certificate::commonName() const
{
return subjectName(NID_COMMON_NAME);
}
std::string X509Certificate::issuerName(NID nid) const
{
if (X509_NAME* issuer = X509_get_issuer_name(_pCert))
{
char buffer[NAME_BUFFER_SIZE];
X509_NAME_get_text_by_NID(issuer, nid, buffer, sizeof(buffer));
return std::string(buffer);
}
else return std::string();
}
std::string X509Certificate::subjectName(NID nid) const
{
if (X509_NAME* subj = X509_get_subject_name(_pCert))
{
char buffer[NAME_BUFFER_SIZE];
X509_NAME_get_text_by_NID(subj, nid, buffer, sizeof(buffer));
return std::string(buffer);
}
else return std::string();
}
void X509Certificate::extractNames(std::string& cmnName, std::set<std::string>& domainNames) const
{
domainNames.clear();
if (STACK_OF(GENERAL_NAME)* names = static_cast<STACK_OF(GENERAL_NAME)*>(X509_get_ext_d2i(_pCert, NID_subject_alt_name, 0, 0)))
{
for (int i = 0; i < sk_GENERAL_NAME_num(names); ++i)
{
const GENERAL_NAME* name = sk_GENERAL_NAME_value(names, i);
if (name->type == GEN_DNS)
{
const char* data = reinterpret_cast<char*>(ASN1_STRING_data(name->d.ia5));
std::size_t len = ASN1_STRING_length(name->d.ia5);
domainNames.insert(std::string(data, len));
}
}
GENERAL_NAMES_free(names);
}
cmnName = commonName();
if (!cmnName.empty() && domainNames.empty())
{
domainNames.insert(cmnName);
}
}
Poco::DateTime X509Certificate::validFrom() const
{
ASN1_TIME* certTime = X509_get_notBefore(_pCert);
std::string dateTime(reinterpret_cast<char*>(certTime->data));
int tzd;
return DateTimeParser::parse("%y%m%d%H%M%S", dateTime, tzd);
}
Poco::DateTime X509Certificate::expiresOn() const
{
ASN1_TIME* certTime = X509_get_notAfter(_pCert);
std::string dateTime(reinterpret_cast<char*>(certTime->data));
int tzd;
return DateTimeParser::parse("%y%m%d%H%M%S", dateTime, tzd);
}
bool X509Certificate::issuedBy(const X509Certificate& issuerCertificate) const
{
X509* pCert = const_cast<X509*>(_pCert);
X509* pIssuerCert = const_cast<X509*>(issuerCertificate.certificate());
EVP_PKEY* pIssuerPublicKey = X509_get_pubkey(pIssuerCert);
if (!pIssuerPublicKey) throw Poco::InvalidArgumentException("Issuer certificate has no public key");
int rc = X509_verify(pCert, pIssuerPublicKey);
EVP_PKEY_free(pIssuerPublicKey);
return rc != 0;
}
} } // namespace Poco::Crypto