src/io/recordHandler.cpp

   1 #include "io/recordHandler.h"
   2
   3 #include <iostream>
   4 #include <sstream>
   5 #include <fstream>
   6 #include <ctime>
   7 #include <unordered_map>
   8
   9 #include <openssl/ssl.h>
  10
  11 #include "util.h"
  12 #include "io/record.h"
  13 #include "io/opensslBIO.h"
  14 #include "io/slipBio.h"
  15
  16 #include "db/database.h"
  17 #include "crypto/remoteSigner.h"
  18 #include "crypto/sslUtil.h"
  19 #include "crypto/simpleOpensslSigner.h"
  20
  21 #include "log/logger.hpp"
  22
  23 extern std::vector<Profile> profiles;
  24 extern std::unordered_map<std::string, std::shared_ptr<CAConfig>> CAs;
  25
  26 class RecordHandlerSession {
  27 public:
  28     uint32_t sessid = 0;
  29     uint32_t lastCommandCount = 0;
  30
  31     std::shared_ptr<TBSCertificate> tbs;
  32     std::shared_ptr<SignedCertificate> result;
  33
  34     std::shared_ptr<SSL> ssl;
  35
  36     std::shared_ptr<OpensslBIOWrapper> io;
  37     DefaultRecordHandler* parent;
  38     std::shared_ptr<Signer> signer;
  39
  40     std::unique_ptr<std::ofstream> logFile;
  41     //std::stringstream sessionlog;
  42     std::vector<std::string> serials;
  43     logger::logger_set logger;
  44
  45
  46     RecordHandlerSession( DefaultRecordHandler* parent, std::shared_ptr<Signer> signer, std::shared_ptr<SSL_CTX> ctx, std::shared_ptr<BIO> output ) :
  47         tbs( std::make_shared<TBSCertificate>() ),
  48         logFile( openLogfile( "logs/log_" + timestamp() ) ),
  49         logger{ std::cout, *logFile } {
  50         this->parent = parent;
  51         this->signer = signer;
  52
  53         ssl = std::shared_ptr<SSL>( SSL_new( ctx.get() ), SSL_free );
  54         std::shared_ptr<BIO> bio(
  55             BIO_new( BIO_f_ssl() ),
  56             [output]( BIO * p ) {
  57                 BIO_free( p );
  58             } );
  59         SSL_set_accept_state( ssl.get() );
  60         SSL_set_bio( ssl.get(), output.get(), output.get() );
  61         BIO_set_ssl( bio.get(), ssl.get(), BIO_NOCLOSE );
  62         io = std::make_shared<OpensslBIOWrapper>( bio );
  63     }
  64
  65     void respondCommand( RecordHeader::SignerResult res, std::string payload ) {
  66         RecordHeader rh;
  67         rh.command = static_cast<uint16_t>( res );
  68         rh.flags = 0;
  69         rh.command_count = 0; // TODO i++
  70         sendCommand( rh, payload, io );
  71     }
  72
  73     void work() {
  74         try {
  75             RecordHeader head;
  76             std::string all = parseCommandChunked( head, io );
  77             execute( static_cast<RecordHeader::SignerCommand>( head.command ), all );
  78         } catch( const std::exception& msg ) {
  79             logger::error( "ERROR: ", msg.what() );
  80             parent->reset();
  81             return;
  82         }
  83     }
  84
  85     void execute( RecordHeader::SignerCommand command, std::string data ) {
  86         switch( command ) {
  87         case RecordHeader::SignerCommand::SET_CSR:
  88             tbs->csr_content = data;
  89             tbs->csr_type = "CSR";
  90             logger::note( "INFO: CSR read:\n", tbs->csr_content );
  91             break;
  92
  93         case RecordHeader::SignerCommand::SET_SPKAC:
  94             tbs->csr_content = data;
  95             tbs->csr_type = "SPKAC";
  96             logger::note( "INFO: SPKAC read:\n", tbs->csr_content );
  97             break;
  98
  99         case RecordHeader::SignerCommand::SET_SIGNATURE_TYPE:
 100             tbs->md = data;
 101             break;
 102
 103         case RecordHeader::SignerCommand::SET_PROFILE:
 104             // TODO
 105             tbs->profile = data;
 106             break;
 107
 108         case RecordHeader::SignerCommand::SET_WISH_FROM:
 109             tbs->wishFrom = data;
 110             break;
 111
 112         case RecordHeader::SignerCommand::SET_WISH_TO:
 113             tbs->wishTo = data;
 114             break;
 115
 116         case RecordHeader::SignerCommand::ADD_SAN:
 117             {
 118                 size_t pos = data.find( "," );
 119
 120                 if( pos == std::string::npos ) {
 121                     // error
 122                 } else {
 123                     auto san = std::make_shared<SAN>();
 124                     san->type = data.substr( 0, pos );
 125                     san->content = data.substr( pos + 1 );
 126                     tbs->SANs.push_back( san );
 127                 }
 128             }
 129             break;
 130
 131         case RecordHeader::SignerCommand::ADD_AVA:
 132             {
 133                 size_t pos = data.find( "," );
 134
 135                 if( pos == std::string::npos ) {
 136                     // error
 137                 } else {
 138                     auto ava = std::make_shared<AVA>();
 139                     ava->name = data.substr( 0, pos );
 140                     ava->value = data.substr( pos + 1 );
 141                     tbs->AVAs.push_back( ava );
 142                 }
 143             }
 144             break;
 145
 146         case RecordHeader::SignerCommand::ADD_PROOF_LINE:
 147             break;
 148
 149         case RecordHeader::SignerCommand::SIGN:
 150             result = signer->sign( tbs );
 151             logger::note( "INFO: signlog:\n", result->log );
 152             logger::note( "INFO: res:\n", result->certificate );
 153             respondCommand( RecordHeader::SignerResult::SAVE_LOG, result->log );
 154             break;
 155
 156         case RecordHeader::SignerCommand::LOG_SAVED:
 157             if( result ) {
 158                 respondCommand( RecordHeader::SignerResult::SIGNING_CA, result->ca_name );
 159                 respondCommand( RecordHeader::SignerResult::CERTIFICATE, result->certificate );
 160             }
 161
 162             logger::note( "Shutting down SSL" );
 163
 164             if( !SSL_shutdown( ssl.get() ) && !SSL_shutdown( ssl.get() ) ) {
 165                 logger::warn( "ERROR: SSL shutdown failed." );
 166             }
 167
 168             io->ctrl( BIO_CTRL_FLUSH, 0, NULL );
 169             logger::note( "Shutted down SSL" );
 170
 171             parent->reset(); // Connection ended
 172
 173             break;
 174
 175         case RecordHeader::SignerCommand::ADD_SERIAL:
 176             serials.push_back( data );
 177             break;
 178
 179         case RecordHeader::SignerCommand::REVOKE:
 180             {
 181                 logger::note("Revoking: ", data);
 182                 std::string ca = data;
 183                 auto reqCA = CAs.at( ca );
 184                 logger::note( "CA found in recordHandler" );
 185                 std::shared_ptr<CRL> crl;
 186                 std::string date;
 187                 std::tie( crl, date ) = signer->revoke( reqCA, serials );
 188
 189                 respondCommand( RecordHeader::SignerResult::REVOKED, date + crl->getSignature() );
 190             }
 191             break;
 192
 193         case RecordHeader::SignerCommand::GET_FULL_CRL:
 194             {
 195                 logger::note("Requesting full CRL: ", data);
 196                 auto ca = CAs.at( data );
 197                 CRL c( ca->path + "/ca.crl" );
 198                 respondCommand( RecordHeader::SignerResult::FULL_CRL, c.toString() );
 199
 200                 logger::note( "Shutting down SSL" );
 201                 if( !SSL_shutdown( ssl.get() ) && !SSL_shutdown( ssl.get() ) ) {
 202                     logger::error( "ERROR: SSL shutdown failed." );
 203                 }
 204                 io->ctrl( BIO_CTRL_FLUSH, 0, NULL );
 205                 logger::note( "Shutted down SSL" );
 206
 207                 parent->reset(); // Connection ended
 208             }
 209             break;
 210
 211         default:
 212             throw std::runtime_error( "Unimplemented" );
 213         }
 214     }
 215 };
 216
 217 DefaultRecordHandler::DefaultRecordHandler( std::shared_ptr<Signer> signer, std::shared_ptr<BIO> bio ) :
 218     bio( bio ), ctx( generateSSLContext( true ) ), signer( signer ), currentSession() {
 219 }
 220
 221 void DefaultRecordHandler::reset() {
 222     currentSession = std::shared_ptr<RecordHandlerSession>();
 223 }
 224
 225 void DefaultRecordHandler::handle() {
 226     if( !currentSession ) {
 227         ( void ) BIO_reset( bio.get() );
 228         logger::note( "New session allocated." );
 229         currentSession = std::make_shared<RecordHandlerSession>( this, signer, ctx, bio );
 230     }
 231
 232     try {
 233         currentSession->work();
 234     } catch( eof_exception e ) {
 235         reset();
 236     }
 237 }