6 #include <openssl/ssl.h>
7 #include <openssl/bio.h>
8 #include <openssl/x509v3.h>
10 X509Req::X509Req( X509_REQ* csr ) {
11 req = std::shared_ptr<X509_REQ>( csr, X509_REQ_free );
12 EVP_PKEY* pkt = X509_REQ_get_pubkey( req.get() );
15 throw "Error extracting public key";
18 pk = std::shared_ptr<EVP_PKEY>( pkt, EVP_PKEY_free );
21 X509Req::X509Req( std::string spkac ) {
22 if( spkac.compare( 0, 6, "SPKAC=" ) != 0 ) {
23 throw "Error: not a SPKAC";
26 spkac = spkac.substr( 6 );
27 NETSCAPE_SPKI* spki_p = NETSCAPE_SPKI_b64_decode( spkac.c_str(), spkac.size() );
30 throw "Error: decode failed";
33 spki = std::shared_ptr<NETSCAPE_SPKI>( spki_p, NETSCAPE_SPKI_free );
34 EVP_PKEY* pkt_p = NETSCAPE_SPKI_get_pubkey( spki.get() );
37 throw "Error: reading SPKAC Pubkey failed";
40 pk = std::shared_ptr<EVP_PKEY>( pkt_p, EVP_PKEY_free );
43 int X509Req::verify() {
45 return NETSCAPE_SPKI_verify( spki.get(), pk.get() );
48 return X509_REQ_verify( req.get(), pk.get() );
51 std::shared_ptr<EVP_PKEY> X509Req::getPkey() {
55 std::shared_ptr<X509Req> X509Req::parse( std::string filename ) {
56 std::shared_ptr<BIO> in = std::shared_ptr<BIO>( BIO_new_mem_buf( const_cast<char*>( filename.c_str() ), -1 ), BIO_free );
57 X509_REQ* req = PEM_read_bio_X509_REQ( in.get(), NULL, NULL, NULL );
60 throw "Error parsing CSR";
63 return std::shared_ptr<X509Req>( new X509Req( req ) );
66 std::shared_ptr<X509Req> X509Req::parseSPKAC( std::string content ) {
67 return std::shared_ptr<X509Req>( new X509Req( content ) );
70 int add_ext( std::shared_ptr<X509> issuer, std::shared_ptr<X509> subj, int nid, const char* value ) {
74 /* This sets the 'context' of the extensions. */
75 /* No configuration database */
76 X509V3_set_ctx_nodb( &ctx );
78 /* Issuer and subject certs: both the target since it is self signed,
79 * no request and no CRL
81 X509V3_set_ctx( &ctx, issuer.get(), subj.get(), NULL, NULL, 0 );
82 ex = X509V3_EXT_conf_nid( NULL, &ctx, nid, const_cast<char*>( value ) );
88 X509_add_ext( subj.get(), ex, -1 );
89 X509_EXTENSION_free( ex );
94 X509Cert::X509Cert() {
98 throw "malloc failed";
101 target = std::shared_ptr<X509>( c, X509_free );
103 if( !X509_set_version( c, 2 ) ) {
104 throw "Setting X509-version to 3 failed";
108 void X509Cert::setIssuerNameFrom( std::shared_ptr<X509> caCert ) {
109 if( !X509_set_issuer_name( target.get(), X509_get_subject_name( caCert.get() ) ) ) {
110 throw "Error setting Issuer name";
114 void X509Cert::setPubkeyFrom( std::shared_ptr<X509Req> req ) {
115 std::shared_ptr<EVP_PKEY> pktmp = req->getPkey();
117 if( !X509_set_pubkey( target.get(), pktmp.get() ) ) {
118 throw "Setting public key failed.";
122 void X509Cert::setSerialNumber( int num ) {
123 ASN1_INTEGER_set( target.get()->cert_info->serialNumber, num );
126 void X509Cert::setTimes( uint32_t before, uint32_t after ) {
127 X509_gmtime_adj( X509_get_notBefore( target.get() ), before );
128 X509_gmtime_adj( X509_get_notAfter( target.get() ), after );
131 static X509_EXTENSION* do_ext_i2d( int ext_nid, int crit, ASN1_VALUE* ext_struc ) {
132 unsigned char* ext_der;
134 ASN1_OCTET_STRING* ext_oct;
136 /* Convert internal representation to DER */
138 ext_len = ASN1_item_i2d( ext_struc, &ext_der, ASN1_ITEM_ptr( ASN1_ITEM_ref( GENERAL_NAMES ) ) );
144 if( !( ext_oct = M_ASN1_OCTET_STRING_new() ) ) {
148 ext_oct->data = ext_der;
149 ext_oct->length = ext_len;
151 ext = X509_EXTENSION_create_by_NID( NULL, ext_nid, crit, ext_oct );
157 M_ASN1_OCTET_STRING_free( ext_oct );
164 void X509Cert::setExtensions( std::shared_ptr<X509> caCert, std::vector<std::shared_ptr<SAN>>& sans ) {
165 add_ext( caCert, target, NID_basic_constraints, "critical,CA:FALSE" );
166 add_ext( caCert, target, NID_subject_key_identifier, "hash" );
167 add_ext( caCert, target, NID_authority_key_identifier, "keyid,issuer:always" );
168 add_ext( caCert, target, NID_key_usage, "critical,nonRepudiation,digitalSignature,keyEncipherment" );
169 add_ext( caCert, target, NID_ext_key_usage, "clientAuth, serverAuth" );
170 add_ext( caCert, target, NID_info_access, "OCSP;URI:http://ocsp.cacert.org" );
171 add_ext( caCert, target, NID_crl_distribution_points, "URI:http://crl.cacert.org/class3-revoke.crl" );
173 std::shared_ptr<GENERAL_NAMES> gens = std::shared_ptr<GENERAL_NAMES>(
174 sk_GENERAL_NAME_new_null(),
175 []( GENERAL_NAMES * ref ) {
177 sk_GENERAL_NAME_pop_free( ref, GENERAL_NAME_free );
181 for( auto& name : sans ) {
182 GENERAL_NAME* gen = GENERAL_NAME_new();
185 throw "Malloc failure.";
188 gen->type = name->type == "DNS" ? GEN_DNS : name->type == "email" ? GEN_EMAIL : 0; // GEN_EMAIL;
191 || !( gen->d.ia5 = M_ASN1_IA5STRING_new() )
192 || !ASN1_STRING_set( gen->d.ia5, name->content.data(), name->content.size() ) ) {
193 GENERAL_NAME_free( gen );
194 throw "initing iasting5 failed";
197 sk_GENERAL_NAME_push( gens.get(), gen );
200 X509_EXTENSION* ext = do_ext_i2d( NID_subject_alt_name, 0/*critical*/, ( ASN1_VALUE* )gens.get() );
202 X509_add_ext( target.get(), ext, -1 );
203 X509_EXTENSION_free( ext );
206 std::shared_ptr<SignedCertificate> X509Cert::sign( std::shared_ptr<EVP_PKEY> caKey ) {
207 if( !X509_sign( target.get(), caKey.get(), EVP_sha512() ) ) {
208 throw "Signing failed.";
211 //X509_print_fp( stdout, target.get() );
213 std::shared_ptr<BIO> mem = std::shared_ptr<BIO>( BIO_new( BIO_s_mem() ), BIO_free );
214 PEM_write_bio_X509( mem.get(), target.get() );
216 BIO_get_mem_ptr( mem.get(), &buf );
217 std::shared_ptr<SignedCertificate> res = std::shared_ptr<SignedCertificate>( new SignedCertificate() );
218 res->certificate = std::string( buf->data, buf->data + buf->length );
219 res->serial = ASN1_INTEGER_get( target.get()->cert_info->serialNumber );