algo-gate-api.c

/////////////////////////////
////
////    NEW FEATURE: algo_gate
////
////    algos define targets for their common functions
////    and define a function for miner-thread to call to register
////    their targets. miner thread builds the gate, and array of structs
////    of function pointers, by calling each algo's register function.
//   Functions in this file are used simultaneously by myultiple
//   threads and must therefore be re-entrant.

#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <memory.h>
#include <unistd.h>
#include <openssl/sha.h>
//#include "miner.h"
#include "algo-gate-api.h"

// Define null and standard functions.
//
// Generic null functions do nothing except satisfy the syntax and
// can be used for optional safe gate functions.
//
// null gate functions are genarally used for mandatory and unsafe functions
// and will usually display an error massage and/or return a fail code.
// They are registered by default and are expected to be overwritten.
//
// std functions are non-null functions used by the most number of algos
// are are default.
//
// aux functions are functions used by many, but not most, algos and must
// be registered by eech algo using them. They usually have descriptive
// names.
//
// custom functions are algo spefic and are defined and registered in the
// algo's source file and are usually named [algo]_[function]. 
//
// In most cases the default is a null or std function. However in some
// cases, for convenience when the null function is not the most popular,
// the std function will be defined as default and the algo must register
// an appropriate null function.
//
// similar algos may share a gate function that may be defined here or
// in a source file common to the similar algos.
//
// gate functions may call other gate functions under the following
// restrictions. Any gate function defined here or used by more than one
// algo must call other functions using the gate: algo_gate.[function]. 
// custom functions may call other custom functions directly using
// [algo]_[function], howver it is recommended to alway use the gate.
//
// If, under rare circumstances, an algo with a custom gate function 
// needs to call a function of another algo it must define and register
// a private gate from its rgistration function and use it to call
// forein functions: [private_gate].[function]. If the algo needs to call
// a utility function defined here it may do so directly.
//
// The algo's gate registration function is caled once from the main thread
// and can do other intialization in addition such as setting options or
// other global or local (to the algo) variables.

// A set of predefined generic null functions that can be used as any null
// gate function with the same signature. 

void do_nothing   () {}
bool return_true  () { return true;  }
bool return_false () { return false; }
void *return_null () { return NULL;  }
void call_error   () { printf("ERR: Uninitialized function pointer\n"); }

void algo_not_tested()
{
  applog( LOG_WARNING,"Algo %s has not been tested live. It may not work",
          algo_names[opt_algo] );
  applog(LOG_WARNING,"and bad things may happen. Use at your own risk.");
}

void four_way_not_tested()
{
  applog( LOG_WARNING,"Algo %s has not been tested using 4way. It may not", algo_names[opt_algo] );
  applog( LOG_WARNING,"work or may be slower. Please report your results.");
}

void algo_not_implemented()
{
  applog(LOG_ERR,"Algo %s has not been Implemented.",algo_names[opt_algo]);
}

// default null functions

int null_scanhash()
{
   applog(LOG_WARNING,"SWERR: undefined scanhash function in algo_gate");
   return 0;
}

void null_hash()
{
   applog(LOG_WARNING,"SWERR: null_hash unsafe null function");
};
void null_hash_suw()
{
  applog(LOG_WARNING,"SWERR: null_hash_suw unsafe null function");
};

void init_algo_gate( algo_gate_t* gate )
{
   gate->miner_thread_init       = (void*)&return_true;
   gate->scanhash                = (void*)&null_scanhash;
   gate->hash                    = (void*)&null_hash;
   gate->hash_suw                = (void*)&null_hash_suw;
   gate->get_new_work            = (void*)&std_get_new_work;
   gate->get_nonceptr            = (void*)&std_get_nonceptr;
   gate->work_decode             = (void*)&std_le_work_decode;
   gate->decode_extra_data       = (void*)&do_nothing;
   gate->wait_for_diff           = (void*)&std_wait_for_diff;
   gate->get_max64               = (void*)&get_max64_0x1fffffLL;
   gate->gen_merkle_root         = (void*)&sha256d_gen_merkle_root;
   gate->stratum_gen_work        = (void*)&std_stratum_gen_work;
   gate->build_stratum_request   = (void*)&std_le_build_stratum_request;
   gate->malloc_txs_request      = (void*)&std_malloc_txs_request;
   gate->submit_getwork_result   = (void*)&std_le_submit_getwork_result;
   gate->build_block_header      = (void*)&std_build_block_header;
   gate->build_extraheader       = (void*)&std_build_extraheader;
   gate->set_work_data_endian    = (void*)&do_nothing;
   gate->calc_network_diff       = (void*)&std_calc_network_diff;
   gate->ready_to_mine           = (void*)&std_ready_to_mine;
   gate->resync_threads          = (void*)&do_nothing;
   gate->do_this_thread          = (void*)&return_true;
   gate->longpoll_rpc_call       = (void*)&std_longpoll_rpc_call;
   gate->stratum_handle_response = (void*)&std_stratum_handle_response;
   gate->get_work_data_size      = (void*)&std_get_work_data_size;
   gate->optimizations           = EMPTY_SET;
   gate->ntime_index             = STD_NTIME_INDEX;
   gate->nbits_index             = STD_NBITS_INDEX;
   gate->nonce_index             = STD_NONCE_INDEX;
   gate->work_cmp_size           = STD_WORK_CMP_SIZE;
}

// Ignore warnings for not yet defined register functions
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wimplicit-function-declaration"

// called by each thread that uses the gate
bool register_algo_gate( int algo, algo_gate_t *gate )
{
  if ( NULL == gate )
  {
    applog(LOG_ERR,"FAIL: algo_gate registration failed, NULL gate\n");
    return false;
  }

  init_algo_gate( gate );

  switch (algo)
  {
    case ALGO_ALLIUM:        register_allium_algo        ( gate ); break;
    case ALGO_ANIME:         register_anime_algo         ( gate ); break;
    case ALGO_ARGON2:        register_argon2_algo        ( gate ); break;
    case ALGO_ARGON2D250:    register_argon2d_crds_algo  ( gate ); break;
    case ALGO_ARGON2D500:    register_argon2d_dyn_algo   ( gate ); break;
    case ALGO_ARGON2D4096:   register_argon2d4096_algo   ( gate ); break;
    case ALGO_AXIOM:         register_axiom_algo         ( gate ); break;
    case ALGO_BASTION:       register_bastion_algo       ( gate ); break;
    case ALGO_BLAKE:         register_blake_algo         ( gate ); break;
    case ALGO_BLAKE2B:       register_blake2b_algo       ( gate ); break;
    case ALGO_BLAKE2S:       register_blake2s_algo       ( gate ); break;
    case ALGO_BLAKECOIN:     register_blakecoin_algo     ( gate ); break;
    case ALGO_BMW512:        register_bmw512_algo        ( gate ); break;
    case ALGO_C11:           register_c11_algo           ( gate ); break;
    case ALGO_CRYPTOLIGHT:   register_cryptolight_algo   ( gate ); break;
    case ALGO_CRYPTONIGHT:   register_cryptonight_algo   ( gate ); break;
    case ALGO_CRYPTONIGHTV7: register_cryptonightv7_algo ( gate ); break;
    case ALGO_DECRED:        register_decred_algo        ( gate ); break;
    case ALGO_DEEP:          register_deep_algo          ( gate ); break;
    case ALGO_DMD_GR:        register_dmd_gr_algo        ( gate ); break;
    case ALGO_DROP:          register_drop_algo          ( gate ); break;
    case ALGO_FRESH:         register_fresh_algo         ( gate ); break;
    case ALGO_GROESTL:       register_groestl_algo       ( gate ); break;
    case ALGO_HEAVY:         register_heavy_algo         ( gate ); break;
    case ALGO_HEX:           register_hex_algo           ( gate ); break;
    case ALGO_HMQ1725:       register_hmq1725_algo       ( gate ); break;
    case ALGO_HODL:          register_hodl_algo          ( gate ); break;
    case ALGO_JHA:           register_jha_algo           ( gate ); break;
    case ALGO_KECCAK:        register_keccak_algo        ( gate ); break;
    case ALGO_KECCAKC:       register_keccakc_algo       ( gate ); break;
    case ALGO_LBRY:          register_lbry_algo          ( gate ); break;
    case ALGO_LUFFA:         register_luffa_algo         ( gate ); break;
    case ALGO_LYRA2H:        register_lyra2h_algo        ( gate ); break;
    case ALGO_LYRA2RE:       register_lyra2re_algo       ( gate ); break;
    case ALGO_LYRA2REV2:     register_lyra2rev2_algo     ( gate ); break;
    case ALGO_LYRA2REV3:     register_lyra2rev3_algo     ( gate ); break;
    case ALGO_LYRA2Z:        register_lyra2z_algo        ( gate ); break;
    case ALGO_LYRA2Z330:     register_lyra2z330_algo     ( gate ); break;
    case ALGO_M7M:           register_m7m_algo           ( gate ); break;
    case ALGO_MYR_GR:        register_myriad_algo        ( gate ); break;
    case ALGO_NEOSCRYPT:     register_neoscrypt_algo     ( gate ); break;
    case ALGO_NIST5:         register_nist5_algo         ( gate ); break;
    case ALGO_PENTABLAKE:    register_pentablake_algo    ( gate ); break;
    case ALGO_PHI1612:       register_phi1612_algo       ( gate ); break;
    case ALGO_PHI2:          register_phi2_algo          ( gate ); break;
    case ALGO_PLUCK:         register_pluck_algo         ( gate ); break;
    case ALGO_POLYTIMOS:     register_polytimos_algo     ( gate ); break;
    case ALGO_POWER2B:       register_power2b_algo       ( gate ); break;
    case ALGO_QUARK:         register_quark_algo         ( gate ); break;
    case ALGO_QUBIT:         register_qubit_algo         ( gate ); break;
    case ALGO_SCRYPT:        register_scrypt_algo        ( gate ); break;
    case ALGO_SCRYPTJANE:    register_scryptjane_algo    ( gate ); break;
    case ALGO_SHA256D:       register_sha256d_algo       ( gate ); break;
    case ALGO_SHA256Q:       register_sha256q_algo       ( gate ); break;
    case ALGO_SHA256T:       register_sha256t_algo       ( gate ); break;
    case ALGO_SHAVITE3:      register_shavite_algo       ( gate ); break;
    case ALGO_SKEIN:         register_skein_algo         ( gate ); break;
    case ALGO_SKEIN2:        register_skein2_algo        ( gate ); break;
    case ALGO_SKUNK:         register_skunk_algo         ( gate ); break;
    case ALGO_SONOA:         register_sonoa_algo         ( gate ); break;
    case ALGO_TIMETRAVEL:    register_timetravel_algo    ( gate ); break;
    case ALGO_TIMETRAVEL10:  register_timetravel10_algo  ( gate ); break;
    case ALGO_TRIBUS:        register_tribus_algo        ( gate ); break;
    case ALGO_VANILLA:       register_vanilla_algo       ( gate ); break;
    case ALGO_VELTOR:        register_veltor_algo        ( gate ); break;
    case ALGO_WHIRLPOOL:     register_whirlpool_algo     ( gate ); break;
    case ALGO_WHIRLPOOLX:    register_whirlpoolx_algo    ( gate ); break;
    case ALGO_X11:           register_x11_algo           ( gate ); break;
    case ALGO_X11EVO:        register_x11evo_algo        ( gate ); break;
    case ALGO_X11GOST:       register_x11gost_algo       ( gate ); break;
    case ALGO_X12:           register_x12_algo           ( gate ); break;
    case ALGO_X13:           register_x13_algo           ( gate ); break;
    case ALGO_X13BCD:        register_x13bcd_algo        ( gate ); break;
    case ALGO_X13SM3:        register_x13sm3_algo        ( gate ); break;
    case ALGO_X14:           register_x14_algo           ( gate ); break;
    case ALGO_X15:           register_x15_algo           ( gate ); break;
    case ALGO_X16R:          register_x16r_algo          ( gate ); break;
    case ALGO_X16RV2:        register_x16rv2_algo        ( gate ); break;
    case ALGO_X16RT:         register_x16rt_algo         ( gate ); break;
    case ALGO_X16RT_VEIL:    register_x16rt_veil_algo    ( gate ); break;
    case ALGO_X16S:          register_x16s_algo          ( gate ); break;
    case ALGO_X17:           register_x17_algo           ( gate ); break;
    case ALGO_X21S:          register_x21s_algo          ( gate ); break;
    case ALGO_XEVAN:         register_xevan_algo         ( gate ); break;
/*    case ALGO_YESCRYPT:     register_yescrypt_05_algo     ( gate ); break;
     case ALGO_YESCRYPTR8:   register_yescryptr8_05_algo   ( gate ); break;
     case ALGO_YESCRYPTR16:  register_yescryptr16_05_algo  ( gate ); break;
     case ALGO_YESCRYPTR32:  register_yescryptr32_05_algo  ( gate ); break;
*/
    case ALGO_YESCRYPT:      register_yescrypt_algo      ( gate ); break;
    case ALGO_YESCRYPTR8:    register_yescryptr8_algo    ( gate ); break;
    case ALGO_YESCRYPTR16:   register_yescryptr16_algo   ( gate ); break;
    case ALGO_YESCRYPTR32:   register_yescryptr32_algo   ( gate ); break;
    case ALGO_YESPOWER:      register_yespower_algo      ( gate ); break;
    case ALGO_YESPOWERR16:   register_yespowerr16_algo   ( gate ); break;
    case ALGO_YESPOWER_URX:  register_yespower_urx_algo  ( gate ); break;
    case ALGO_CPUPOWER:      register_cpupower_algo      ( gate ); break;
    case ALGO_YESPOWER_INTER: register_yespower_inter_algo ( gate ); break;
    case ALGO_YESPOWER_LTNCG: register_yespower_ltncg_algo ( gate ); break;
    case ALGO_YESPOWERLITB:  register_yespowerlitb_algo  ( gate ); break;
    case ALGO_YESPOWERSUGAR:  register_yespowersugar_algo  ( gate ); break;
    case ALGO_YESPOWER_B2B:  register_yespower_b2b_algo  ( gate ); break;
    case ALGO_ZR5:           register_zr5_algo           ( gate ); break;
   default:
      applog(LOG_ERR,"FAIL: algo_gate registration failed, unknown algo %s.\n", algo_names[opt_algo] );
      return false;
  } // switch

 // ensure required functions were defined.
  if (  gate->scanhash == (void*)&null_scanhash )
  {
    applog(LOG_ERR, "FAIL: Required algo_gate functions undefined\n");
    return false;
  }
  return true;
}

// restore warnings
#pragma GCC diagnostic pop

// override std defaults with jr2 defaults
bool register_json_rpc2( algo_gate_t *gate )
{
  applog(LOG_WARNING,"\nCryptonight algorithm and variants are no longer");
  applog(LOG_WARNING,"supported by cpuminer-opt. Shares submitted will");
  applog(LOG_WARNING,"likely be rejected. Proceed at your own risk.\n");

  gate->wait_for_diff           = (void*)&do_nothing;
  gate->get_new_work            = (void*)&jr2_get_new_work;
  gate->get_nonceptr            = (void*)&jr2_get_nonceptr;
  gate->stratum_gen_work        = (void*)&jr2_stratum_gen_work;
  gate->build_stratum_request   = (void*)&jr2_build_stratum_request;
  gate->submit_getwork_result   = (void*)&jr2_submit_getwork_result;
  gate->longpoll_rpc_call       = (void*)&jr2_longpoll_rpc_call;
  gate->work_decode             = (void*)&jr2_work_decode;
  gate->stratum_handle_response = (void*)&jr2_stratum_handle_response;
  gate->nonce_index             = JR2_NONCE_INDEX;
  jsonrpc_2 = true;   // still needed
  opt_extranonce = false;
//  have_gbt = false;
  return true;
 }

// run the alternate hash function for a specific algo
void exec_hash_function( int algo, void *output, const void *pdata )
{
  algo_gate_t gate;   
  gate.hash = (void*)&null_hash;
  register_algo_gate( algo, &gate );
  gate.hash( output, pdata, 0 );  
}

#define PROPER (1)
#define ALIAS  (0)

// The only difference between the alias and the proper algo name is the
// proper name is the one that is defined in ALGO_NAMES. There may be
// multiple aliases that map to the same proper name.
// New aliases can be added anywhere in the array as long as NULL is last.
// Alphabetic order of alias is recommended.
const char* const algo_alias_map[][2] =
{
//   alias                proper
  { "argon2d-crds",      "argon2d250"   },
  { "argon2d-dyn",       "argon2d500"   },
  { "argon2d-uis",       "argon2d4096"  },
  { "bitcore",           "timetravel10" },
  { "bitzeny",           "yescryptr8"   },
  { "blake256r8",        "blakecoin"    },
  { "blake256r8vnl",     "vanilla"      },
  { "blake256r14",       "blake"        },
  { "blake256r14dcr",    "decred"       },
  { "cpuchain",          "cpupower"     },
  { "cryptonote",        "cryptonight"  },
  { "cryptonight-light", "cryptolight"  },
  { "diamond",           "dmd-gr"       },
  { "droplp",            "drop"         },
  { "espers",            "hmq1725"      },
  { "flax",              "c11"          },
  { "hsr",               "x13sm3"       },
  { "jackpot",           "jha"          },
  { "jane",              "scryptjane"   },
  { "intercoin",        "yespowerinter" },
  { "lightBit",          "yespowerlitb" },
  { "lyra2",             "lyra2re"      },
  { "lyra2v2",           "lyra2rev2"    },
  { "lyra2v3",           "lyra2rev3"    },
  { "myrgr",             "myr-gr"       },
  { "myriad",            "myr-gr"       },
  { "neo",               "neoscrypt"    },
  { "phi",               "phi1612"      },
  { "sib",               "x11gost"      },
  { "sugarchain",       "yespowersugar" },
  { "timetravel8",       "timetravel"   },
  { "veil",              "x16rt-veil"   },
  { "x16r-hex",          "hex"          },
  { "yenten",            "yescryptr16"  },
  { "ziftr",             "zr5"          },
  { NULL,                NULL           }   
};

// if arg is a valid alias for a known algo it is updated with the proper
// name. No validation of the algo or alias is done, It is the responsinility
// of the calling function to validate the algo after return.
void get_algo_alias( char** algo_or_alias )
{
  int i;
  for ( i=0; algo_alias_map[i][ALIAS]; i++ )
    if ( !strcasecmp( *algo_or_alias, algo_alias_map[i][ ALIAS ] ) )
    {
      // found valid alias, return proper name
      *algo_or_alias = (char* const)( algo_alias_map[i][ PROPER ] );
      return;
    }
}

#undef ALIAS
#undef PROPER