1 #include "simpleOpensslSigner.h"
4 #include <unordered_map>
6 #include <openssl/ssl.h>
7 #include <openssl/err.h>
8 #include <openssl/bio.h>
9 #include <openssl/bn.h>
10 #include <openssl/engine.h>
11 #include <openssl/x509v3.h>
13 #include "log/logger.hpp"
19 extern std::unordered_map<std::string, Profile> profiles;
21 std::shared_ptr<int> SimpleOpensslSigner::lib_ref = ssl_lib_ref;
23 SimpleOpensslSigner::SimpleOpensslSigner() {
26 SimpleOpensslSigner::~SimpleOpensslSigner() {
29 std::pair<std::shared_ptr<BIGNUM>, std::string> SimpleOpensslSigner::nextSerial( Profile& prof, std::shared_ptr<CAConfig> ca ) {
30 uint16_t profile = prof.id;
31 std::string res = readFile( ca->path + "/serial" );
39 throw "Initing serial failed";
42 if( !BN_hex2bn( &bn, res.c_str() ) ) {
43 throw "Parsing serial failed.";
47 std::shared_ptr<BIGNUM> serial = std::shared_ptr<BIGNUM>( bn, BN_free );
49 std::shared_ptr<unsigned char> data = std::shared_ptr<unsigned char>( ( unsigned char* ) malloc( BN_num_bytes( serial.get() ) + 20 ), free );
50 int len = BN_bn2bin( serial.get(), data.get() );
52 data.get()[len] = 0x0;
53 data.get()[len + 1] = 0x0; // signer id
55 data.get()[len + 2] = profile >> 8;
56 data.get()[len + 3] = profile & 0xFF; // profile id
58 if( !RAND_bytes( data.get() + len + 4, 16 ) || !BN_add_word( serial.get(), 1 ) ) {
59 throw "Big number math failed while fetching random data for serial number.";
62 std::shared_ptr<char> serStr = std::shared_ptr<char>(
63 BN_bn2hex( serial.get() ),
68 writeFile( ca->path + "/serial", serStr.get() );
70 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() ) );
73 std::shared_ptr<SignedCertificate> SimpleOpensslSigner::sign( std::shared_ptr<TBSCertificate> cert ) {
74 std::stringstream signlog;
76 logger::note( "FINE: Profile name is: ", cert->profile );
78 Profile& prof = profiles.at( cert->profile );
79 logger::note( "FINE: Profile ID is: ", prof.id );
81 std::shared_ptr<CAConfig> ca = prof.getCA();
84 logger::error( "ERROR: Signing CA specified in profile could not be loaded." );
85 throw "CA-key not found";
88 logger::note( "FINE: Key for Signing CA is correctly loaded." );
90 logger::note( "INFO: Baseline Key Usage is: ", prof.ku );
91 logger::note( "INFO: Extended Key Usage is: ", prof.eku );
93 logger::note( "FINE: Signing is wanted by: ", cert->wishFrom );
94 logger::note( "FINE: Signing is wanted for: ", cert->wishTo );
96 std::shared_ptr<X509Req> req;
98 if( cert->csr_type == "SPKAC" ) {
99 req = X509Req::parseSPKAC( cert->csr_content );
100 } else if( cert->csr_type == "CSR" ) {
101 req = X509Req::parseCSR( cert->csr_content );
103 logger::errorf( "ERROR: Unknown type (\"%s\") of certification in request.", cert->csr_type );
104 throw "Error, unknown REQ rype " + ( cert->csr_type ); //! \fixme: Pointer instead of string, please use proper exception classes
107 int i = req->verify();
110 throw "Request contains a Signature with problems ... ";
111 } else if( i == 0 ) {
112 throw "Request contains a Signature that does not match ...";
114 logger::note( "FINE: Request contains valid self-signature." );
117 // Construct the Certificate
118 X509Cert c = X509Cert();
120 logger::note( "INFO: Populating RDN ..." );
122 for( std::shared_ptr<AVA> a : cert->AVAs ) {
123 logger::notef( "INFO: Trying to add RDN: %s: %s", a->name, a->value );
125 if( a->name == "CN" ) {
126 c.addRDN( NID_commonName, a->value );
127 } else if( a->name == "EMAIL" ) {
128 c.addRDN( NID_pkcs9_emailAddress, a->value );
129 } else if( a->name == "C" ) {
130 c.addRDN( NID_countryName, a->value );
131 } else if( a->name == "L" ) {
132 c.addRDN( NID_localityName, a->value );
133 } else if( a->name == "ST" ) {
134 c.addRDN( NID_stateOrProvinceName, a->value );
135 } else if( a->name == "O" ) {
136 c.addRDN( NID_organizationName, a->value );
137 } else if( a->name == "OU" ) {
138 c.addRDN( NID_organizationalUnitName, a->value );
140 logger::error( "ERROR: Trying to add illegal RDN/AVA type: ", a->name );
141 throw "Unhandled/Illegal AVA type";
145 logger::note( "INFO: Populating Issuer ..." );
146 c.setIssuerNameFrom( ca->ca );
148 logger::note( "INFO: Validating Public key for use in certificate" );
149 logger::note( "INFO: - Checking generic key parameters" );
150 logger::note( "FINE: ->Public Key parameters are okay" );
152 logger::note( "INFO: - Checking blacklists" );
153 logger::note( "FINE: ->Does not appear on any blacklist" );
155 logger::note( "INFO: - Checking trivial factorization" );
156 logger::note( "FINE: ->Trivial factorization not possible" );
158 logger::note( "INFO: - Checking astrological signs" );
159 logger::note( "FINE: ->The stars look good for this one" );
160 logger::note( "FINE: Public key is fine for use in certificate" );
162 logger::note( "INFO: Copying Public Key from Request ..." );
163 c.setPubkeyFrom( req );
164 logger::note( "FINE: Public Key successfully copied from Request." );
167 logger::note( "INFO: Determining Validity Period ..." );
168 std::time_t from, to;
169 std::time_t now = time( 0 );
170 std::pair<bool, std::time_t> parsed;
172 if( ( parsed = parseDate( cert->wishFrom ) ).first /* is of yyyy-mm-dd */ ) {
173 if( parsed.second > now ) {
174 from = parsed.second;
182 if( ( ( from - now ) > /* 2 Weeks */ ( 2 * 7 * 24 * 60 * 60 ) ) || ( ( now - from ) >= 0 ) ) {
186 if( ( parsed = parseDate( cert->wishTo ) ).first /*is of yyyy-mm-dd */ ) {
187 if( parsed.second > from ) {
190 to = from + /*2 Years */ 2 * 365 * 24 * 60 * 60;
192 } else if( ( parsed = parseYearInterval( from, cert->wishTo ) ).first /*is of [0-9]+y */ ) {
194 } else if( ( parsed = parseMonthInterval( from, cert->wishTo ) ).first /*is of [0-9]+m */ ) {
197 to = from + /*2 Years */ 2 * 365 * 24 * 60 * 60;
200 time_t limit = prof.maxValidity;
202 if( ( to - from > limit ) || ( to - from < 0 ) ) {
206 c.setTimes( from, to );
207 logger::note( "FINE: Setting validity period successful:" );
210 std::vector<char> timebuf;
212 timeobj = gmtime( &from );
213 timebuf.resize( 128 );
214 timebuf.resize( std::strftime( const_cast<char*>( timebuf.data() ), timebuf.size(), "%F %T %Z", timeobj ) );
215 logger::note( "FINE: - Valid not before: ", std::string( timebuf.cbegin(), timebuf.cend() ) );
217 timeobj = gmtime( &to );
218 timebuf.resize( 128 );
219 timebuf.resize( std::strftime( const_cast<char*>( timebuf.data() ), timebuf.size(), "%F %T %Z", timeobj ) );
220 logger::note( "FINE: - Valid not after: ", std::string( timebuf.cbegin(), timebuf.cend() ) );
224 logger::note( "INFO: Setting extensions:" );
225 c.setExtensions( ca->ca, cert->SANs, prof );
226 logger::note( "FINE: Setting extensions successful." );
228 logger::note( "INFO: Generating next Serial Number ..." );
229 std::shared_ptr<BIGNUM> ser;
231 std::tie( ser, num ) = nextSerial( prof, ca );
232 c.setSerialNumber( ser.get() );
233 logger::note( "FINE: Certificate Serial Number set to: ", num );
236 logger::note( "INFO: Trying to sign Certificate:" );
237 std::shared_ptr<SignedCertificate> output = c.sign( ca->caKey, cert->md );
238 logger::note( "INFO: Writing certificate to local file." );
239 std::string fn = writeBackFile( num, output->certificate, ca->path );
242 logger::error( "ERROR: failed to get filename for storage of signed certificate." );
243 throw "Storage location could not be determined";
246 logger::note( "FINE: Certificate signed successfully." );
247 logger::note( "FINE: - Certificate written to: ", fn );
249 output->ca_name = ca->name;
250 output->log = signlog.str();
255 std::pair<std::shared_ptr<CRL>, std::string> SimpleOpensslSigner::revoke( std::shared_ptr<CAConfig> ca, std::vector<std::string> serials ) {
256 std::string crlpath = ca->path + "/ca.crl";
258 std::shared_ptr<CRL> crl( new CRL( crlpath ) );
259 std::string date = "";
261 for( std::string serial : serials ) {
262 date = crl->revoke( serial, "" );
266 writeFile( crlpath, crl->toString() );
267 return std::pair<std::shared_ptr<CRL>, std::string>( crl, date );