1 #include "simpleOpensslSigner.h"
4 #include <unordered_map>
7 #include <openssl/ssl.h>
8 #include <openssl/err.h>
9 #include <openssl/bio.h>
10 #include <openssl/bn.h>
11 #include <openssl/engine.h>
12 #include <openssl/x509v3.h>
14 #include "log/logger.hpp"
20 extern std::unordered_map<std::string, Profile> profiles;
21 extern std::unordered_map<std::string, std::shared_ptr<CAConfig>> CAs;
23 std::shared_ptr<int> SimpleOpensslSigner::lib_ref = ssl_lib_ref;
25 SimpleOpensslSigner::SimpleOpensslSigner() {
28 SimpleOpensslSigner::~SimpleOpensslSigner() {
31 std::pair<std::shared_ptr<BIGNUM>, std::string> SimpleOpensslSigner::nextSerial( Profile& prof, std::shared_ptr<CAConfig> ca ) {
32 uint16_t profile = prof.id;
33 std::string res = readFile( ca->path + "/serial" );
40 if( !bn || !BN_hex2bn( &bn, "1" ) ) {
41 throw std::runtime_error( "Initing serial failed" );
44 if( !BN_hex2bn( &bn, res.c_str() ) ) {
45 throw std::runtime_error( "Parsing serial failed." );
49 std::shared_ptr<BIGNUM> serial = std::shared_ptr<BIGNUM>( bn, BN_free );
51 std::shared_ptr<unsigned char> data = std::shared_ptr<unsigned char>( ( unsigned char * ) malloc( BN_num_bytes( serial.get() ) + 20 ), free );
52 int len = BN_bn2bin( serial.get(), data.get() );
54 data.get()[len] = 0x0;
55 data.get()[len + 1] = 0x0; // signer id
57 data.get()[len + 2] = profile >> 8;
58 data.get()[len + 3] = profile & 0xFF; // profile id
60 if( !RAND_bytes( data.get() + len + 4, 16 ) || !BN_add_word( serial.get(), 1 ) ) {
61 throw std::runtime_error( "Big number math failed while fetching random data for serial number." );
64 auto freeMem = []( char *ref ) {
67 std::shared_ptr<char> serStr = std::shared_ptr<char>( BN_bn2hex( serial.get() ), freeMem );
69 writeFile( ca->path + "/serial", serStr.get() );
71 return std::pair<std::shared_ptr<BIGNUM>, std::string>( std::shared_ptr<BIGNUM>( BN_bin2bn( data.get(), len + 4 + 16, 0 ), BN_free ), std::string( serStr.get() ) );
74 std::shared_ptr<SignedCertificate> SimpleOpensslSigner::sign( std::shared_ptr<TBSCertificate> cert ) {
75 std::stringstream signlog;
76 logger::logger_set log_set_sign( {logger::log_target( signlog, logger::level::debug )}, logger::auto_register::on );
78 std::shared_ptr<CAConfig> ca;
81 if( cert->ocspCA != "" ) {
82 auto caIterator = CAs.find( cert->ocspCA );
84 if( caIterator == CAs.end() ) {
85 logger::error( "ERROR: Signing CA specified in request for an OCSP cert could not be loaded." );
86 throw std::runtime_error( "CA-key for OCSP cert not found" );
89 ca = caIterator->second;
90 logger::note( "Trying to fetch OCSP-profile" );
91 prof = &profiles.at( "0100-ocsp" );
92 logger::note( "Done with it" );
94 logger::note( "FINE: Profile name is: ", cert->profile );
96 prof = &profiles.at( cert->profile );
97 logger::note( "FINE: Profile ID is: ", prof->id );
102 logger::error( "ERROR: Signing CA specified in profile could not be loaded." );
103 throw std::runtime_error( "CA-key not found" );
107 throw std::runtime_error( "Cannot sign certificate with CA " + ca->name + " because it has no private key." );
110 logger::note( "FINE: Key for Signing CA is correctly loaded." );
112 logger::note( "INFO: Baseline Key Usage is: ", prof->ku );
113 logger::note( "INFO: Extended Key Usage is: ", prof->eku );
115 logger::note( "FINE: Signing is wanted by: ", cert->wishFrom );
116 logger::note( "FINE: Signing is wanted for: ", cert->wishTo );
118 std::shared_ptr<X509Req> req;
120 if( cert->csr_type == "SPKAC" ) {
121 req = X509Req::parseSPKAC( cert->csr_content );
122 } else if( cert->csr_type == "CSR" ) {
123 req = X509Req::parseCSR( cert->csr_content );
125 logger::errorf( "ERROR: Unknown type (\"%s\") of certification in request.", cert->csr_type );
126 throw std::runtime_error( "Error, unknown REQ rype " + cert->csr_type ); //! \fixme: Pointer instead of string, please use proper exception classe)s
129 int i = req->verify();
132 throw std::runtime_error( "Request contains a Signature with problems ... " );
133 } else if( i == 0 ) {
134 throw std::runtime_error( "Request contains a Signature that does not match ..." );
136 logger::note( "FINE: Request contains valid self-signature." );
139 // Construct the Certificate
140 X509Cert c = X509Cert();
142 logger::note( "INFO: Populating RDN ..." );
144 for( std::shared_ptr<AVA> a : cert->AVAs ) {
145 logger::notef( "INFO: Trying to add RDN: %s: %s", a->name, a->value );
147 if( a->value.empty() ) {
148 logger::notef( "INFO: Removing empty RDN: %s", a->name );
152 if( a->name == "CN" ) {
153 c.addRDN( NID_commonName, a->value );
154 } else if( a->name == "EMAIL" ) {
155 c.addRDN( NID_pkcs9_emailAddress, a->value );
156 } else if( a->name == "C" ) {
157 c.addRDN( NID_countryName, a->value );
158 } else if( a->name == "L" ) {
159 c.addRDN( NID_localityName, a->value );
160 } else if( a->name == "ST" ) {
161 c.addRDN( NID_stateOrProvinceName, a->value );
162 } else if( a->name == "O" ) {
163 c.addRDN( NID_organizationName, a->value );
164 } else if( a->name == "OU" ) {
165 c.addRDN( NID_organizationalUnitName, a->value );
167 logger::error( "ERROR: Trying to add illegal RDN/AVA type: ", a->name );
168 throw std::runtime_error( "Unhandled/Illegal AVA type" );
172 logger::note( "INFO: Populating Issuer ..." );
173 c.setIssuerNameFrom( ca->ca );
175 logger::note( "INFO: Validating Public key for use in certificate" );
176 logger::note( "INFO: - Checking generic key parameters" );
177 logger::note( "FINE: ->Public Key parameters are okay" );
179 logger::note( "INFO: - Checking blacklists" );
180 logger::note( "FINE: ->Does not appear on any blacklist" );
182 logger::note( "INFO: - Checking trivial factorization" );
183 logger::note( "FINE: ->Trivial factorization not possible" );
185 logger::note( "INFO: - Checking astrological signs" );
186 logger::note( "FINE: ->The stars look good for this one" );
187 logger::note( "FINE: Public key is fine for use in certificate" );
189 logger::note( "INFO: Copying Public Key from Request ..." );
190 c.setPubkeyFrom( req );
191 logger::note( "FINE: Public Key successfully copied from Request." );
194 logger::note( "INFO: Determining Validity Period ..." );
195 std::time_t from, to;
196 std::time_t now = time( 0 );
197 std::pair<bool, std::time_t> parsed;
199 if( ( parsed = parseDate( cert->wishFrom ) ).first /* is of yyyy-mm-dd */ ) {
200 if( parsed.second > now ) {
201 from = parsed.second;
209 if( ( ( from - now ) > /* 2 Weeks */ ( 2 * 7 * 24 * 60 * 60 ) ) || ( ( now - from ) >= 0 ) ) {
213 if( ( parsed = parseDate( cert->wishTo ) ).first /*is of yyyy-mm-dd */ ) {
214 if( parsed.second > from ) {
217 to = from + /*2 Years */ 2 * 365 * 24 * 60 * 60;
219 } else if( ( parsed = parseYearInterval( from, cert->wishTo ) ).first /*is of [0-9]+y */ ) {
221 } else if( ( parsed = parseMonthInterval( from, cert->wishTo ) ).first /*is of [0-9]+m */ ) {
224 to = from + /*2 Years */ 2 * 365 * 24 * 60 * 60;
227 time_t limit = prof->maxValidity;
229 if( ( to - from > limit ) || ( to - from < 0 ) ) {
233 c.setTimes( from, to );
234 logger::note( "FINE: Setting validity period successful:" );
237 std::vector<char> timebuf;
239 timeobj = gmtime( &from );
240 timebuf.resize( 128 );
241 timebuf.resize( std::strftime( const_cast<char *>( timebuf.data() ), timebuf.size(), "%F %T %Z", timeobj ) );
242 logger::note( "FINE: - Valid not before: ", std::string( timebuf.cbegin(), timebuf.cend() ) );
244 timeobj = gmtime( &to );
245 timebuf.resize( 128 );
246 timebuf.resize( std::strftime( const_cast<char *>( timebuf.data() ), timebuf.size(), "%F %T %Z", timeobj ) );
247 logger::note( "FINE: - Valid not after: ", std::string( timebuf.cbegin(), timebuf.cend() ) );
251 logger::note( "INFO: Setting extensions:" );
252 c.setExtensions( ca->ca, cert->SANs, *prof, ca->crlURL, ca->crtURL );
253 logger::note( "FINE: Setting extensions successful." );
255 logger::note( "INFO: Generating next Serial Number ..." );
256 std::shared_ptr<BIGNUM> ser;
258 std::tie( ser, num ) = nextSerial( *prof, ca );
259 c.setSerialNumber( ser.get() );
260 logger::note( "FINE: Certificate Serial Number set to: ", num );
263 logger::note( "INFO: Trying to sign Certificate:" );
264 std::shared_ptr<SignedCertificate> output = c.sign( ca->caKey, cert->md );
265 logger::note( "INFO: Writing certificate to local file." );
266 std::string fn = writeBackFile( num, output->certificate, ca->path );
269 logger::error( "ERROR: failed to get filename for storage of signed certificate." );
270 throw std::runtime_error( "Storage location could not be determined" );
273 logger::note( "FINE: Certificate signed successfully." );
274 logger::note( "FINE: - Certificate written to: ", fn );
276 output->ca_name = ca->name;
277 output->log = signlog.str();
282 std::pair<std::shared_ptr<CRL>, std::string> SimpleOpensslSigner::revoke( std::shared_ptr<CAConfig> ca, std::vector<std::string> serials ) {
283 logger::note( "revoking" );
284 std::string crlpath = ca->path + "/ca.crl";
286 auto crl = std::make_shared<CRL>( crlpath );
287 std::string date = "";
289 logger::note( "adding serials" );
291 for( std::string serial : serials ) {
292 date = crl->revoke( serial, "" );
295 logger::note( "signing CRL" );
297 writeFile( crlpath, crl->toString() );
298 logger::note( "wrote CRL" );
299 return std::pair<std::shared_ptr<CRL>, std::string>( crl, date );