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             size_t pos = data.find( "," );
 118
 119             if( pos == std::string::npos ) {
 120                 // error
 121             } else {
 122                 auto san = std::make_shared<SAN>();
 123                 san->type = data.substr( 0, pos );
 124                 san->content = data.substr( pos + 1 );
 125                 tbs->SANs.push_back( san );
 126             }
 127         }
 128         break;
 129
 130         case RecordHeader::SignerCommand::ADD_AVA: {
 131             size_t pos = data.find( "," );
 132
 133             if( pos == std::string::npos ) {
 134                 // error
 135             } else {
 136                 auto ava = std::make_shared<AVA>();
 137                 ava->name = data.substr( 0, pos );
 138                 ava->value = data.substr( pos + 1 );
 139                 tbs->AVAs.push_back( ava );
 140             }
 141         }
 142         break;
 143
 144         case RecordHeader::SignerCommand::ADD_PROOF_LINE:
 145             break;
 146
 147         case RecordHeader::SignerCommand::SIGN:
 148             result = signer->sign( tbs );
 149             logger::note( "INFO: signlog:\n", result->log );
 150             logger::note( "INFO: res:\n", result->certificate );
 151             respondCommand( RecordHeader::SignerResult::SAVE_LOG, result->log );
 152             break;
 153
 154         case RecordHeader::SignerCommand::LOG_SAVED:
 155             if( result ) {
 156                 respondCommand( RecordHeader::SignerResult::SIGNING_CA, result->ca_name );
 157                 respondCommand( RecordHeader::SignerResult::CERTIFICATE, result->certificate );
 158             }
 159
 160             logger::note( "Shutting down SSL" );
 161
 162             if( !SSL_shutdown( ssl.get() ) && !SSL_shutdown( ssl.get() ) ) {
 163                 logger::warn( "ERROR: SSL shutdown failed." );
 164             }
 165
 166             io->ctrl( BIO_CTRL_FLUSH, 0, NULL );
 167             logger::note( "Shutted down SSL" );
 168
 169             parent->reset(); // Connection ended
 170
 171             break;
 172
 173         case RecordHeader::SignerCommand::ADD_SERIAL:
 174             serials.push_back( data );
 175             break;
 176
 177         case RecordHeader::SignerCommand::REVOKE: {
 178             logger::note( "Revoking: ", data );
 179             std::string ca = data;
 180             auto reqCA = CAs.at( ca );
 181             logger::note( "CA found in recordHandler" );
 182             std::shared_ptr<CRL> crl;
 183             std::string date;
 184             std::tie( crl, date ) = signer->revoke( reqCA, serials );
 185
 186             respondCommand( RecordHeader::SignerResult::REVOKED, date + crl->getSignature() );
 187         }
 188         break;
 189
 190         case RecordHeader::SignerCommand::GET_FULL_CRL: {
 191             logger::note( "Requesting full CRL: ", data );
 192             auto ca = CAs.at( data );
 193             CRL c( ca->path + "/ca.crl" );
 194             respondCommand( RecordHeader::SignerResult::FULL_CRL, c.toString() );
 195
 196             logger::note( "Shutting down SSL" );
 197
 198             if( !SSL_shutdown( ssl.get() ) && !SSL_shutdown( ssl.get() ) ) {
 199                 logger::error( "ERROR: SSL shutdown failed." );
 200             }
 201
 202             io->ctrl( BIO_CTRL_FLUSH, 0, NULL );
 203             logger::note( "Shutted down SSL" );
 204
 205             parent->reset(); // Connection ended
 206         }
 207         break;
 208
 209         default:
 210             throw std::runtime_error( "Unimplemented" );
 211         }
 212     }
 213 };
 214
 215 DefaultRecordHandler::DefaultRecordHandler( std::shared_ptr<Signer> signer, std::shared_ptr<BIO> bio ) :
 216     bio( bio ), ctx( generateSSLContext( true ) ), signer( signer ), currentSession() {
 217 }
 218
 219 void DefaultRecordHandler::reset() {
 220     currentSession = std::shared_ptr<RecordHandlerSession>();
 221 }
 222
 223 void DefaultRecordHandler::handle() {
 224     if( !currentSession ) {
 225         ( void ) BIO_reset( bio.get() );
 226         logger::note( "New session allocated." );
 227         currentSession = std::make_shared<RecordHandlerSession>( this, signer, ctx, bio );
 228     }
 229
 230     try {
 231         currentSession->work();
 232     } catch( eof_exception e ) {
 233         reset();
 234     }
 235 }