2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <boost/algorithm/string.hpp>
23 #include <openssl/x509.h>
24 #include <openssl/ssl.h>
25 #include <openssl/asn1.h>
26 #include <libxml++/nodes/element.h>
28 #include "certificates.h"
29 #include "compose.hpp"
30 #include "exceptions.h"
34 using std::stringstream;
36 using boost::shared_ptr;
37 using namespace libdcp;
39 /** @param c X509 certificate, which this object will take ownership of */
40 Certificate::Certificate (X509* c)
46 Certificate::Certificate (string const & filename)
49 FILE* f = fopen (filename.c_str(), "r");
51 throw FileError ("could not open file", filename);
54 if (!PEM_read_X509 (f, &_certificate, 0, 0)) {
55 throw MiscError ("could not read X509 certificate");
59 Certificate::~Certificate ()
61 X509_free (_certificate);
65 Certificate::certificate () const
67 assert (_certificate);
69 BIO* bio = BIO_new (BIO_s_mem ());
71 throw MiscError ("could not create memory BIO");
74 PEM_write_bio_X509 (bio, _certificate);
78 long int const data_length = BIO_get_mem_data (bio, &data);
79 for (long int i = 0; i < data_length; ++i) {
85 boost::replace_all (s, "-----BEGIN CERTIFICATE-----\n", "");
86 boost::replace_all (s, "\n-----END CERTIFICATE-----\n", "");
91 Certificate::issuer () const
93 assert (_certificate);
94 return name_for_xml (X509_get_issuer_name (_certificate));
98 Certificate::asn_to_utf8 (ASN1_STRING* s)
100 unsigned char* buf = 0;
101 ASN1_STRING_to_UTF8 (&buf, s);
102 string const u (reinterpret_cast<char *> (buf));
108 Certificate::get_name_part (X509_NAME* n, int nid)
111 p = X509_NAME_get_index_by_NID (n, nid, p);
113 return asn_to_utf8 (X509_NAME_ENTRY_get_data (X509_NAME_get_entry (n, p)));
118 Certificate::name_for_xml (X509_NAME * n)
122 string s = String::compose (
123 "dnQualifier=%1,CN=%2,OU=%3,O=%4",
124 get_name_part (n, NID_dnQualifier),
125 get_name_part (n, NID_commonName),
126 get_name_part (n, NID_organizationalUnitName),
127 get_name_part (n, NID_organizationName)
130 boost::replace_all (s, "+", "\\+");
135 Certificate::subject () const
137 assert (_certificate);
139 return name_for_xml (X509_get_subject_name (_certificate));
143 Certificate::serial () const
145 assert (_certificate);
147 ASN1_INTEGER* s = X509_get_serialNumber (_certificate);
150 BIGNUM* b = ASN1_INTEGER_to_BN (s, 0);
151 char* c = BN_bn2dec (b);
161 Certificate::thumbprint () const
163 assert (_certificate);
165 uint8_t buffer[8192];
167 i2d_X509_CINF (_certificate->cert_info, &p);
168 int const length = p - buffer;
170 throw MiscError ("buffer too small to generate thumbprint");
175 SHA1_Update (&sha, buffer, length);
177 SHA1_Final (digest, &sha);
179 char digest_base64[64];
180 return Kumu::base64encode (digest, 20, digest_base64, 64);
183 shared_ptr<Certificate>
184 CertificateChain::root () const
186 assert (!_certificates.empty());
187 return _certificates.front ();
190 shared_ptr<Certificate>
191 CertificateChain::leaf () const
193 assert (_certificates.size() >= 2);
194 return _certificates.back ();
197 list<shared_ptr<Certificate> >
198 CertificateChain::leaf_to_root () const
200 list<shared_ptr<Certificate> > c = _certificates;
206 CertificateChain::add (shared_ptr<Certificate> c)
208 _certificates.push_back (c);