+/*
+ Copyright (C) 2012 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
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
#include <sstream>
#include <vector>
#include <boost/algorithm/string.hpp>
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include <openssl/asn1.h>
+#include <libxml++/nodes/element.h>
+#include "KM_util.h"
#include "certificates.h"
+#include "compose.hpp"
#include "exceptions.h"
using std::list;
}
+Certificate::Certificate (boost::filesystem::path filename)
+ : _certificate (0)
+{
+ FILE* f = fopen (filename.c_str(), "r");
+ if (!f) {
+ throw FileError ("could not open file", filename);
+ }
+
+ if (!PEM_read_X509 (f, &_certificate, 0, 0)) {
+ throw MiscError ("could not read X509 certificate");
+ }
+}
+
+Certificate::Certificate (string cert)
+{
+ read_string (cert);
+}
+
+Certificate::Certificate (Certificate const & other)
+{
+ read_string (other.certificate (true));
+}
+
+void
+Certificate::read_string (string cert)
+{
+ BIO* bio = BIO_new_mem_buf (const_cast<char *> (cert.c_str ()), -1);
+ if (!bio) {
+ throw MiscError ("could not create memory BIO");
+ }
+
+ _certificate = PEM_read_bio_X509 (bio, 0, 0, 0);
+ if (!_certificate) {
+ throw MiscError ("could not read X509 certificate from memory BIO");
+ }
+
+ BIO_free (bio);
+}
+
Certificate::~Certificate ()
{
X509_free (_certificate);
}
+Certificate &
+Certificate::operator= (Certificate const & other)
+{
+ if (this == &other) {
+ return *this;
+ }
+
+ X509_free (_certificate);
+ read_string (other.certificate ());
+
+ return *this;
+}
+
string
-Certificate::certificate () const
+Certificate::certificate (bool with_begin_end) const
{
+ assert (_certificate);
+
BIO* bio = BIO_new (BIO_s_mem ());
if (!bio) {
throw MiscError ("could not create memory BIO");
BIO_free (bio);
- boost::replace_all (s, "-----BEGIN CERTIFICATE-----\n", "");
- boost::replace_all (s, "\n-----END CERTIFICATE-----\n", "");
+ if (!with_begin_end) {
+ boost::replace_all (s, "-----BEGIN CERTIFICATE-----\n", "");
+ boost::replace_all (s, "\n-----END CERTIFICATE-----\n", "");
+ }
+
return s;
}
string
Certificate::issuer () const
{
- X509_NAME* n = X509_get_issuer_name (_certificate);
- assert (n);
+ assert (_certificate);
+ return name_for_xml (X509_get_issuer_name (_certificate));
+}
- char b[256];
- X509_NAME_oneline (n, b, 256);
- return b;
+string
+Certificate::asn_to_utf8 (ASN1_STRING* s)
+{
+ unsigned char* buf = 0;
+ ASN1_STRING_to_UTF8 (&buf, s);
+ string const u (reinterpret_cast<char *> (buf));
+ OPENSSL_free (buf);
+ return u;
}
string
-Certificate::name_for_xml (string const & n)
+Certificate::get_name_part (X509_NAME* n, int nid)
{
- stringstream x;
+ int p = -1;
+ p = X509_NAME_get_index_by_NID (n, nid, p);
+ assert (p != -1);
+ return asn_to_utf8 (X509_NAME_ENTRY_get_data (X509_NAME_get_entry (n, p)));
+}
- vector<string> p;
- boost::split (p, n, boost::is_any_of ("/"));
- for (vector<string>::const_reverse_iterator i = p.rbegin(); i != p.rend(); ++i) {
- x << *i << ",";
- }
- string s = x.str();
- boost::replace_all (s, "+", "\\+");
+string
+Certificate::name_for_xml (X509_NAME * n)
+{
+ assert (n);
- return s.substr(0, s.length() - 2);
+ string s = String::compose (
+ "dnQualifier=%1,CN=%2,OU=%3,O=%4",
+ get_name_part (n, NID_dnQualifier),
+ get_name_part (n, NID_commonName),
+ get_name_part (n, NID_organizationalUnitName),
+ get_name_part (n, NID_organizationName)
+ );
+
+ boost::replace_all (s, "+", "\\+");
+ return s;
}
string
Certificate::subject () const
{
- X509_NAME* n = X509_get_subject_name (_certificate);
- assert (n);
+ assert (_certificate);
- char b[256];
- X509_NAME_oneline (n, b, 256);
- return b;
+ return name_for_xml (X509_get_subject_name (_certificate));
}
string
Certificate::serial () const
{
+ assert (_certificate);
+
ASN1_INTEGER* s = X509_get_serialNumber (_certificate);
assert (s);
return st;
}
-
-/** @param filename Text file of PEM-format certificates,
- * in the order:
- *
- * 1. self-signed root certificate
- * 2. intermediate certificate signed by root certificate
- * ...
- * n. leaf certificate signed by previous intermediate.
- */
-
-CertificateChain::CertificateChain (string const & filename)
+string
+Certificate::thumbprint () const
{
- FILE* f = fopen (filename.c_str(), "r");
- if (!f) {
- throw FileError ("could not open file", filename);
- }
+ assert (_certificate);
- while (1) {
- X509* c = 0;
- if (!PEM_read_X509 (f, &c, 0, 0)) {
- break;
- }
-
- _certificates.push_back (shared_ptr<Certificate> (new Certificate (c)));
+ uint8_t buffer[8192];
+ uint8_t* p = buffer;
+ i2d_X509_CINF (_certificate->cert_info, &p);
+ int const length = p - buffer;
+ if (length > 8192) {
+ throw MiscError ("buffer too small to generate thumbprint");
}
+
+ SHA_CTX sha;
+ SHA1_Init (&sha);
+ SHA1_Update (&sha, buffer, length);
+ uint8_t digest[20];
+ SHA1_Final (digest, &sha);
+
+ char digest_base64[64];
+ return Kumu::base64encode (digest, 20, digest_base64, 64);
}
shared_ptr<Certificate>
c.reverse ();
return c;
}
+
+void
+CertificateChain::add (shared_ptr<Certificate> c)
+{
+ _certificates.push_back (c);
+}
projects / libdcp.git / blobdiff