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cpu-miner.c
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cpu-miner.c
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/*
* Copyright 2010 Jeff Garzik
* Copyright 2012-2014 pooler
* Copyright 2014 Lucas Jones
* Copyright 2014 Tanguy Pruvot
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version. See COPYING for more details.
*/
#include <cpuminer-config.h>
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>
#include <curl/curl.h>
#include <jansson.h>
#include <openssl/sha.h>
#ifdef _MSC_VER
#include <windows.h>
#include <stdint.h>
#else
#include <errno.h>
#if HAVE_SYS_SYSCTL_H
#include <sys/types.h>
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/sysctl.h>
#endif
#endif
#ifndef WIN32
#include <sys/resource.h>
#endif
#include "miner.h"
#ifdef WIN32
#include "compat/winansi.h"
BOOL WINAPI ConsoleHandler(DWORD);
#endif
#ifdef _MSC_VER
#include <Mmsystem.h>
#pragma comment(lib, "winmm.lib")
#endif
#define LP_SCANTIME 60
#ifndef min
#define min(a,b) (a>b ? b : a)
#define max(a,b) (a<b ? b : a)
#endif
enum workio_commands {
WC_GET_WORK,
WC_SUBMIT_WORK,
};
struct workio_cmd {
enum workio_commands cmd;
struct thr_info *thr;
union {
struct work *work;
} u;
};
enum algos {
ALGO_KECCAK, /* Keccak (old) */
ALGO_KECCAKC, /* Keccak */
ALGO_HEAVY, /* Heavy */
ALGO_NEOSCRYPT, /* NeoScrypt(128, 2, 1) with Salsa20/20 and ChaCha20/20 */
ALGO_QUARK, /* Quark */
ALGO_AXIOM, /* Shabal 256 Memohash */
ALGO_BASTION,
ALGO_BLAKE, /* Blake 256 */
ALGO_BLAKECOIN, /* Simplified 8 rounds Blake 256 */
ALGO_BLAKE2S, /* Blake2s */
ALGO_BMW, /* BMW 256 */
ALGO_C11, /* C11 Chaincoin/Flaxcoin X11 variant */
ALGO_CRYPTOLIGHT, /* cryptonight-light (Aeon) */
ALGO_CRYPTONIGHT, /* CryptoNight */
ALGO_DECRED, /* Decred */
ALGO_DMD_GR, /* Diamond */
ALGO_DROP, /* Dropcoin */
ALGO_FRESH, /* Fresh */
ALGO_GROESTL, /* Groestl */
ALGO_JHA,
ALGO_LBRY, /* Lbry Sha Ripemd */
ALGO_LUFFA, /* Luffa (Joincoin, Doom) */
ALGO_LYRA2, /* Lyra2RE */
ALGO_LYRA2REV2, /* Lyra2REv2 (Vertcoin) */
ALGO_MYR_GR, /* Myriad Groestl */
ALGO_NIST5, /* Nist5 */
ALGO_PENTABLAKE, /* Pentablake */
ALGO_PLUCK, /* Pluck (Supcoin) */
ALGO_QUBIT, /* Qubit */
ALGO_SCRYPT, /* scrypt */
ALGO_SCRYPTJANE, /* Chacha */
ALGO_SHAVITE3, /* Shavite3 */
ALGO_SHA256D, /* SHA-256d */
ALGO_SIA, /* Blake2-B */
ALGO_SIB, /* X11 + gost (Sibcoin) */
ALGO_SKEIN, /* Skein */
ALGO_SKEIN2, /* Double skein (Woodcoin) */
ALGO_S3, /* S3 */
ALGO_TIMETRAVEL, /* Timetravel-8 (Machinecoin) */
ALGO_BITCORE, /* Timetravel-10 (Bitcore) */
ALGO_TRIBUS, /* Denarius jh/keccak/echo */
ALGO_VANILLA, /* Vanilla (Blake256 8-rounds - double sha256) */
ALGO_VELTOR, /* Skein Shavite Shabal Streebog */
ALGO_X11EVO, /* Permuted X11 */
ALGO_X11, /* X11 */
ALGO_X13, /* X13 */
ALGO_X14, /* X14 */
ALGO_X15, /* X15 */
ALGO_X16R,
ALGO_X17, /* X17 */
ALGO_XEVAN,
ALGO_YESCRYPT,
ALGO_ZR5,
ALGO_COUNT
};
static const char *algo_names[] = {
"keccak",
"keccakc",
"heavy",
"neoscrypt",
"quark",
"axiom",
"bastion",
"blake",
"blakecoin",
"blake2s",
"bmw",
"c11",
"cryptolight",
"cryptonight",
"decred",
"dmd-gr",
"drop",
"fresh",
"groestl",
"jha",
"lbry",
"luffa",
"lyra2re",
"lyra2rev2",
"myr-gr",
"nist5",
"pentablake",
"pluck",
"qubit",
"scrypt",
"scrypt-jane",
"shavite3",
"sha256d",
"sia",
"sib",
"skein",
"skein2",
"s3",
"timetravel",
"bitcore",
"tribus",
"vanilla",
"veltor",
"x11evo",
"x11",
"x13",
"x14",
"x15",
"x16r",
"x17",
"xevan",
"yescrypt",
"zr5",
"\0"
};
bool opt_debug = false;
bool opt_debug_diff = false;
bool opt_protocol = false;
bool opt_benchmark = false;
bool opt_redirect = true;
bool opt_showdiff = true;
bool opt_extranonce = true;
bool want_longpoll = true;
bool have_longpoll = false;
bool have_gbt = true;
bool allow_getwork = true;
bool want_stratum = true;
bool have_stratum = false;
bool opt_stratum_stats = false;
bool allow_mininginfo = true;
bool use_syslog = false;
bool use_colors = true;
static bool opt_background = false;
bool opt_quiet = false;
int opt_maxlograte = 5;
bool opt_randomize = false;
static int opt_retries = -1;
static int opt_fail_pause = 10;
static int opt_time_limit = 0;
int opt_timeout = 300;
static int opt_scantime = 5;
static const bool opt_time = true;
static enum algos opt_algo = ALGO_SCRYPT;
static int opt_scrypt_n = 1024;
static int opt_pluck_n = 128;
static unsigned int opt_nfactor = 6;
int opt_n_threads = 0;
int64_t opt_affinity = -1L;
int opt_priority = 0;
int num_cpus;
char *rpc_url;
char *rpc_userpass;
char *rpc_user, *rpc_pass;
char *short_url = NULL;
static unsigned char pk_script[25] = { 0 };
static size_t pk_script_size = 0;
static char coinbase_sig[101] = { 0 };
char *opt_cert;
char *opt_proxy;
long opt_proxy_type;
struct thr_info *thr_info;
int work_thr_id;
int longpoll_thr_id = -1;
int stratum_thr_id = -1;
int api_thr_id = -1;
bool stratum_need_reset = false;
struct work_restart *work_restart = NULL;
struct stratum_ctx stratum;
bool jsonrpc_2 = false;
char rpc2_id[64] = "";
char *rpc2_blob = NULL;
size_t rpc2_bloblen = 0;
uint32_t rpc2_target = 0;
char *rpc2_job_id = NULL;
bool aes_ni_supported = false;
double opt_diff_factor = 1.0;
pthread_mutex_t rpc2_job_lock;
pthread_mutex_t rpc2_login_lock;
pthread_mutex_t applog_lock;
pthread_mutex_t stats_lock;
uint32_t zr5_pok = 0;
uint32_t solved_count = 0L;
uint32_t accepted_count = 0L;
uint32_t rejected_count = 0L;
double *thr_hashrates;
uint64_t global_hashrate = 0;
double stratum_diff = 0.;
double net_diff = 0.;
double net_hashrate = 0.;
uint64_t net_blocks = 0;
// conditional mining
bool conditional_state[MAX_CPUS] = { 0 };
double opt_max_temp = 0.0;
double opt_max_diff = 0.0;
double opt_max_rate = 0.0;
uint32_t opt_work_size = 0; /* default */
char *opt_api_allow = NULL;
int opt_api_remote = 0;
int opt_api_listen = 4048; /* 0 to disable */
#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#else
struct option {
const char *name;
int has_arg;
int *flag;
int val;
};
#endif
static char const usage[] = "\
Usage: " PACKAGE_NAME " [OPTIONS]\n\
Options:\n\
-a, --algo=ALGO specify the algorithm to use\n\
axiom Shabal-256 MemoHash\n\
bitcore Timetravel with 10 algos\n\
blake Blake-256 14-rounds (SFR)\n\
blakecoin Blake-256 single sha256 merkle\n\
blake2s Blake2-S (256)\n\
bmw BMW 256\n\
c11/flax C11\n\
cryptolight Cryptonight-light\n\
cryptonight Monero\n\
decred Blake-256 14-rounds 180 bytes\n\
dmd-gr Diamond-Groestl\n\
drop Dropcoin\n\
fresh Fresh\n\
groestl GroestlCoin\n\
heavy Heavy\n\
jha JHA\n\
keccak Keccak (Old and deprecated)\n\
keccakc Keccak (CreativeCoin)\n\
luffa Luffa\n\
lyra2re Lyra2RE\n\
lyra2rev2 Lyra2REv2 (Vertcoin)\n\
myr-gr Myriad-Groestl\n\
neoscrypt NeoScrypt(128, 2, 1)\n\
nist5 Nist5\n\
pluck Pluck:128 (Supcoin)\n\
pentablake Pentablake\n\
quark Quark\n\
qubit Qubit\n\
scrypt scrypt(1024, 1, 1) (default)\n\
scrypt:N scrypt(N, 1, 1)\n\
scrypt-jane:N (with N factor from 4 to 30)\n\
shavite3 Shavite3\n\
sha256d SHA-256d\n\
sia Blake2-B\n\
sib X11 + gost (SibCoin)\n\
skein Skein+Sha (Skeincoin)\n\
skein2 Double Skein (Woodcoin)\n\
s3 S3\n\
timetravel Timetravel (Machinecoin)\n\
vanilla Blake-256 8-rounds\n\
x11evo Permuted x11\n\
x11 X11\n\
x13 X13\n\
x14 X14\n\
x15 X15\n\
x16r X16R (Raven)\n\
x17 X17\n\
xevan Xevan (BitSend)\n\
yescrypt Yescrypt\n\
zr5 ZR5\n\
-o, --url=URL URL of mining server\n\
-O, --userpass=U:P username:password pair for mining server\n\
-u, --user=USERNAME username for mining server\n\
-p, --pass=PASSWORD password for mining server\n\
--cert=FILE certificate for mining server using SSL\n\
-x, --proxy=[PROTOCOL://]HOST[:PORT] connect through a proxy\n\
-t, --threads=N number of miner threads (default: number of processors)\n\
-r, --retries=N number of times to retry if a network call fails\n\
(default: retry indefinitely)\n\
-R, --retry-pause=N time to pause between retries, in seconds (default: 30)\n\
--time-limit=N maximum time [s] to mine before exiting the program.\n\
-T, --timeout=N timeout for long poll and stratum (default: 300 seconds)\n\
-s, --scantime=N upper bound on time spent scanning current work when\n\
long polling is unavailable, in seconds (default: 5)\n\
--randomize Randomize scan range start to reduce duplicates\n\
-f, --diff-factor Divide req. difficulty by this factor (std is 1.0)\n\
-m, --diff-multiplier Multiply difficulty by this factor (std is 1.0)\n\
-n, --nfactor neoscrypt N-Factor\n\
--coinbase-addr=ADDR payout address for solo mining\n\
--coinbase-sig=TEXT data to insert in the coinbase when possible\n\
--max-log-rate limit per-core hashrate logs (default: 5s)\n\
--no-longpoll disable long polling support\n\
--no-getwork disable getwork support\n\
--no-gbt disable getblocktemplate support\n\
--no-stratum disable X-Stratum support\n\
--no-extranonce disable Stratum extranonce support\n\
--no-redirect ignore requests to change the URL of the mining server\n\
-q, --quiet disable per-thread hashmeter output\n\
--no-color disable colored output\n\
-D, --debug enable debug output\n\
-P, --protocol-dump verbose dump of protocol-level activities\n\
--hide-diff Hide submitted block and net difficulty\n"
#ifdef HAVE_SYSLOG_H
"\
-S, --syslog use system log for output messages\n"
#endif
"\
-B, --background run the miner in the background\n\
--benchmark run in offline benchmark mode\n\
--cputest debug hashes from cpu algorithms\n\
--cpu-affinity set process affinity to cpu core(s), mask 0x3 for cores 0 and 1\n\
--cpu-priority set process priority (default: 0 idle, 2 normal to 5 highest)\n\
-b, --api-bind IP/Port for the miner API (default: 127.0.0.1:4048)\n\
--api-remote Allow remote control\n\
--max-temp=N Only mine if cpu temp is less than specified value (linux)\n\
--max-rate=N[KMG] Only mine if net hashrate is less than specified value\n\
--max-diff=N Only mine if net difficulty is less than specified value\n\
-c, --config=FILE load a JSON-format configuration file\n\
-V, --version display version information and exit\n\
-h, --help display this help text and exit\n\
";
static char const short_options[] =
#ifdef HAVE_SYSLOG_H
"S"
#endif
"a:b:Bc:CDf:hm:n:p:Px:qr:R:s:t:T:o:u:O:V";
static struct option const options[] = {
{ "algo", 1, NULL, 'a' },
{ "api-bind", 1, NULL, 'b' },
{ "api-remote", 0, NULL, 1030 },
{ "background", 0, NULL, 'B' },
{ "benchmark", 0, NULL, 1005 },
{ "cputest", 0, NULL, 1006 },
{ "cert", 1, NULL, 1001 },
{ "coinbase-addr", 1, NULL, 1016 },
{ "coinbase-sig", 1, NULL, 1015 },
{ "config", 1, NULL, 'c' },
{ "cpu-affinity", 1, NULL, 1020 },
{ "cpu-priority", 1, NULL, 1021 },
{ "no-color", 0, NULL, 1002 },
{ "debug", 0, NULL, 'D' },
{ "diff-factor", 1, NULL, 'f' },
{ "diff", 1, NULL, 'f' }, // deprecated (alias)
{ "diff-multiplier", 1, NULL, 'm' },
{ "help", 0, NULL, 'h' },
{ "nfactor", 1, NULL, 'n' },
{ "no-gbt", 0, NULL, 1011 },
{ "no-getwork", 0, NULL, 1010 },
{ "no-longpoll", 0, NULL, 1003 },
{ "no-redirect", 0, NULL, 1009 },
{ "no-stratum", 0, NULL, 1007 },
{ "no-extranonce", 0, NULL, 1012 },
{ "max-temp", 1, NULL, 1060 },
{ "max-diff", 1, NULL, 1061 },
{ "max-rate", 1, NULL, 1062 },
{ "pass", 1, NULL, 'p' },
{ "protocol", 0, NULL, 'P' },
{ "protocol-dump", 0, NULL, 'P' },
{ "proxy", 1, NULL, 'x' },
{ "quiet", 0, NULL, 'q' },
{ "retries", 1, NULL, 'r' },
{ "retry-pause", 1, NULL, 'R' },
{ "randomize", 0, NULL, 1024 },
{ "scantime", 1, NULL, 's' },
{ "show-diff", 0, NULL, 1013 },
{ "hide-diff", 0, NULL, 1014 },
{ "max-log-rate", 1, NULL, 1019 },
#ifdef HAVE_SYSLOG_H
{ "syslog", 0, NULL, 'S' },
#endif
{ "time-limit", 1, NULL, 1008 },
{ "threads", 1, NULL, 't' },
{ "timeout", 1, NULL, 'T' },
{ "url", 1, NULL, 'o' },
{ "user", 1, NULL, 'u' },
{ "userpass", 1, NULL, 'O' },
{ "version", 0, NULL, 'V' },
{ 0, 0, 0, 0 }
};
static struct work g_work = {{ 0 }};
static time_t g_work_time = 0;
static pthread_mutex_t g_work_lock;
static bool submit_old = false;
static char *lp_id;
static void workio_cmd_free(struct workio_cmd *wc);
#ifdef __linux /* Linux specific policy and affinity management */
#include <sched.h>
static inline void drop_policy(void)
{
struct sched_param param;
param.sched_priority = 0;
#ifdef SCHED_IDLE
if (unlikely(sched_setscheduler(0, SCHED_IDLE, ¶m) == -1))
#endif
#ifdef SCHED_BATCH
sched_setscheduler(0, SCHED_BATCH, ¶m);
#endif
}
#ifdef __BIONIC__
#define pthread_setaffinity_np(tid,sz,s) {} /* only do process affinity */
#endif
static void affine_to_cpu_mask(int id, unsigned long mask) {
cpu_set_t set;
CPU_ZERO(&set);
for (uint8_t i = 0; i < num_cpus; i++) {
// cpu mask
if (mask & (1UL<<i)) { CPU_SET(i, &set); }
}
if (id == -1) {
// process affinity
sched_setaffinity(0, sizeof(&set), &set);
} else {
// thread only
pthread_setaffinity_np(thr_info[id].pth, sizeof(&set), &set);
}
}
#elif defined(WIN32) /* Windows */
static inline void drop_policy(void) { }
static void affine_to_cpu_mask(int id, unsigned long mask) {
if (id == -1)
SetProcessAffinityMask(GetCurrentProcess(), mask);
else
SetThreadAffinityMask(GetCurrentThread(), mask);
}
#else
static inline void drop_policy(void) { }
static void affine_to_cpu_mask(int id, unsigned long mask) { }
#endif
void get_currentalgo(char* buf, int sz)
{
if (opt_algo == ALGO_SCRYPTJANE)
snprintf(buf, sz, "%s:%d", algo_names[opt_algo], opt_scrypt_n);
else
snprintf(buf, sz, "%s", algo_names[opt_algo]);
}
void proper_exit(int reason)
{
#ifdef WIN32
if (opt_background) {
HWND hcon = GetConsoleWindow();
if (hcon) {
// unhide parent command line windows
ShowWindow(hcon, SW_SHOWMINNOACTIVE);
}
}
#endif
exit(reason);
}
static inline void work_free(struct work *w)
{
if (w->txs) free(w->txs);
if (w->workid) free(w->workid);
if (w->job_id) free(w->job_id);
if (w->xnonce2) free(w->xnonce2);
}
static inline void work_copy(struct work *dest, const struct work *src)
{
memcpy(dest, src, sizeof(struct work));
if (src->txs)
dest->txs = strdup(src->txs);
if (src->workid)
dest->workid = strdup(src->workid);
if (src->job_id)
dest->job_id = strdup(src->job_id);
if (src->xnonce2) {
dest->xnonce2 = (uchar*) malloc(src->xnonce2_len);
memcpy(dest->xnonce2, src->xnonce2, src->xnonce2_len);
}
}
/* compute nbits to get the network diff */
static void calc_network_diff(struct work *work)
{
// sample for diff 43.281 : 1c05ea29
// todo: endian reversed on longpoll could be zr5 specific...
uint32_t nbits = have_longpoll ? work->data[18] : swab32(work->data[18]);
if (opt_algo == ALGO_LBRY) nbits = swab32(work->data[26]);
if (opt_algo == ALGO_DECRED) nbits = work->data[29];
if (opt_algo == ALGO_SIA) nbits = work->data[11]; // unsure if correct
uint32_t bits = (nbits & 0xffffff);
int16_t shift = (swab32(nbits) & 0xff); // 0x1c = 28
double d = (double)0x0000ffff / (double)bits;
for (int m=shift; m < 29; m++) d *= 256.0;
for (int m=29; m < shift; m++) d /= 256.0;
if (opt_algo == ALGO_DECRED && shift == 28) d *= 256.0; // testnet
if (opt_debug_diff)
applog(LOG_DEBUG, "net diff: %f -> shift %u, bits %08x", d, shift, bits);
net_diff = d;
}
static bool work_decode(const json_t *val, struct work *work)
{
int i;
int data_size = 128, target_size = sizeof(work->target);
int adata_sz = 32, atarget_sz = ARRAY_SIZE(work->target);
if (opt_algo == ALGO_DROP || opt_algo == ALGO_NEOSCRYPT || opt_algo == ALGO_ZR5) {
data_size = 80; target_size = 32;
adata_sz = 20;
atarget_sz = target_size / sizeof(uint32_t);
} else if (opt_algo == ALGO_DECRED) {
allow_mininginfo = false;
data_size = 192;
adata_sz = 180/4;
}
if (jsonrpc_2) {
return rpc2_job_decode(val, work);
}
if (unlikely(!jobj_binary(val, "data", work->data, data_size))) {
applog(LOG_ERR, "JSON invalid data");
goto err_out;
}
if (unlikely(!jobj_binary(val, "target", work->target, target_size))) {
applog(LOG_ERR, "JSON invalid target");
goto err_out;
}
for (i = 0; i < adata_sz; i++)
work->data[i] = le32dec(work->data + i);
for (i = 0; i < atarget_sz; i++)
work->target[i] = le32dec(work->target + i);
if ((opt_showdiff || opt_max_diff > 0.) && !allow_mininginfo)
calc_network_diff(work);
work->targetdiff = target_to_diff(work->target);
// for api stats, on longpoll pools
stratum_diff = work->targetdiff;
if (opt_algo == ALGO_DROP || opt_algo == ALGO_ZR5) {
#define POK_BOOL_MASK 0x00008000
#define POK_DATA_MASK 0xFFFF0000
if (work->data[0] & POK_BOOL_MASK) {
applog(LOG_BLUE, "POK received: %08xx", work->data[0]);
zr5_pok = work->data[0] & POK_DATA_MASK;
}
} else if (opt_algo == ALGO_DECRED) {
// some random extradata to make the work unique
work->data[36] = (rand()*4);
work->height = work->data[32];
// required for the getwork pools (multicoin.co)
if (!have_longpoll && work->height > net_blocks + 1) {
char netinfo[64] = { 0 };
if (opt_showdiff && net_diff > 0.) {
if (net_diff != work->targetdiff)
sprintf(netinfo, ", diff %.3f, target %.1f", net_diff, work->targetdiff);
else
sprintf(netinfo, ", diff %.3f", net_diff);
}
applog(LOG_BLUE, "%s block %d%s",
algo_names[opt_algo], work->height, netinfo);
net_blocks = work->height - 1;
}
}
return true;
err_out:
return false;
}
// good alternative for wallet mining, difficulty and net hashrate
static const char *info_req =
"{\"method\": \"getmininginfo\", \"params\": [], \"id\":8}\r\n";
static bool get_mininginfo(CURL *curl, struct work *work)
{
if (have_stratum || have_longpoll || !allow_mininginfo)
return false;
int curl_err = 0;
json_t *val = json_rpc_call(curl, rpc_url, rpc_userpass, info_req, &curl_err, 0);
if (!val && curl_err == -1) {
allow_mininginfo = false;
if (opt_debug) {
applog(LOG_DEBUG, "getmininginfo not supported");
}
return false;
}
else {
json_t *res = json_object_get(val, "result");
// "blocks": 491493 (= current work height - 1)
// "difficulty": 0.99607860999999998
// "networkhashps": 56475980
if (res) {
json_t *key = json_object_get(res, "difficulty");
if (key) {
if (json_is_object(key))
key = json_object_get(key, "proof-of-work");
if (json_is_real(key))
net_diff = json_real_value(key);
}
key = json_object_get(res, "networkhashps");
if (key && json_is_integer(key)) {
net_hashrate = (double) json_integer_value(key);
}
key = json_object_get(res, "blocks");
if (key && json_is_integer(key)) {
net_blocks = json_integer_value(key);
}
if (!work->height) {
// complete missing data from getwork
work->height = (uint32_t) net_blocks + 1;
if (work->height > g_work.height) {
restart_threads();
if (!opt_quiet) {
char netinfo[64] = { 0 };
char srate[32] = { 0 };
sprintf(netinfo, "diff %.2f", net_diff);
if (net_hashrate) {
format_hashrate(net_hashrate, srate);
strcat(netinfo, ", net ");
strcat(netinfo, srate);
}
applog(LOG_BLUE, "%s block %d, %s",
algo_names[opt_algo], work->height, netinfo);
}
}
}
}
}
json_decref(val);
return true;
}
#define BLOCK_VERSION_CURRENT 3
static bool gbt_work_decode(const json_t *val, struct work *work)
{
int i, n;
uint32_t version, curtime, bits;
uint32_t prevhash[8];
uint32_t target[8];
int cbtx_size;
uchar *cbtx = NULL;
int tx_count, tx_size;
uchar txc_vi[9];
uchar(*merkle_tree)[32] = NULL;
bool coinbase_append = false;
bool submit_coinbase = false;
bool version_force = false;
bool version_reduce = false;
json_t *tmp, *txa;
bool rc = false;
tmp = json_object_get(val, "mutable");
if (tmp && json_is_array(tmp)) {
n = (int) json_array_size(tmp);
for (i = 0; i < n; i++) {
const char *s = json_string_value(json_array_get(tmp, i));
if (!s)
continue;
if (!strcmp(s, "coinbase/append"))
coinbase_append = true;
else if (!strcmp(s, "submit/coinbase"))
submit_coinbase = true;
else if (!strcmp(s, "version/force"))
version_force = true;
else if (!strcmp(s, "version/reduce"))
version_reduce = true;
}
}
tmp = json_object_get(val, "height");
if (!tmp || !json_is_integer(tmp)) {
applog(LOG_ERR, "JSON invalid height");
goto out;
}
work->height = (int) json_integer_value(tmp);
applog(LOG_BLUE, "Current block is %d", work->height);
tmp = json_object_get(val, "version");
if (!tmp || !json_is_integer(tmp)) {
applog(LOG_ERR, "JSON invalid version");
goto out;
}
version = (uint32_t) json_integer_value(tmp);
if ((version & 0xffU) > BLOCK_VERSION_CURRENT) {
if (version_reduce) {
version = (version & ~0xffU) | BLOCK_VERSION_CURRENT;
} else if (have_gbt && allow_getwork && !version_force) {
applog(LOG_DEBUG, "Switching to getwork, gbt version %d", version);
have_gbt = false;
goto out;
} else if (!version_force) {
applog(LOG_ERR, "Unrecognized block version: %u", version);
goto out;
}
}
if (unlikely(!jobj_binary(val, "previousblockhash", prevhash, sizeof(prevhash)))) {
applog(LOG_ERR, "JSON invalid previousblockhash");
goto out;
}
tmp = json_object_get(val, "curtime");
if (!tmp || !json_is_integer(tmp)) {
applog(LOG_ERR, "JSON invalid curtime");
goto out;
}
curtime = (uint32_t) json_integer_value(tmp);
if (unlikely(!jobj_binary(val, "bits", &bits, sizeof(bits)))) {
applog(LOG_ERR, "JSON invalid bits");
goto out;
}
/* find count and size of transactions */
txa = json_object_get(val, "transactions");
if (!txa || !json_is_array(txa)) {
applog(LOG_ERR, "JSON invalid transactions");
goto out;
}
tx_count = (int) json_array_size(txa);
tx_size = 0;
for (i = 0; i < tx_count; i++) {
const json_t *tx = json_array_get(txa, i);
const char *tx_hex = json_string_value(json_object_get(tx, "data"));
if (!tx_hex) {
applog(LOG_ERR, "JSON invalid transactions");
goto out;
}
tx_size += (int) (strlen(tx_hex) / 2);
}
/* build coinbase transaction */
tmp = json_object_get(val, "coinbasetxn");
if (tmp) {
const char *cbtx_hex = json_string_value(json_object_get(tmp, "data"));
cbtx_size = cbtx_hex ? (int) strlen(cbtx_hex) / 2 : 0;
cbtx = (uchar*) malloc(cbtx_size + 100);
if (cbtx_size < 60 || !hex2bin(cbtx, cbtx_hex, cbtx_size)) {
applog(LOG_ERR, "JSON invalid coinbasetxn");
goto out;
}
} else {
int64_t cbvalue;
if (!pk_script_size) {
if (allow_getwork) {
applog(LOG_INFO, "No payout address provided, switching to getwork");
have_gbt = false;
} else
applog(LOG_ERR, "No payout address provided");
goto out;
}
tmp = json_object_get(val, "coinbasevalue");
if (!tmp || !json_is_number(tmp)) {
applog(LOG_ERR, "JSON invalid coinbasevalue");
goto out;
}
cbvalue = (int64_t) (json_is_integer(tmp) ? json_integer_value(tmp) : json_number_value(tmp));
cbtx = (uchar*) malloc(256);
le32enc((uint32_t *)cbtx, 1); /* version */
cbtx[4] = 1; /* in-counter */
memset(cbtx+5, 0x00, 32); /* prev txout hash */
le32enc((uint32_t *)(cbtx+37), 0xffffffff); /* prev txout index */
cbtx_size = 43;
/* BIP 34: height in coinbase */
for (n = work->height; n; n >>= 8)
cbtx[cbtx_size++] = n & 0xff;
/* If the last byte pushed is >= 0x80, then we need to add
another zero byte to signal that the block height is a
positive number. */
if (cbtx[cbtx_size - 1] & 0x80)
cbtx[cbtx_size++] = 0;
cbtx[42] = cbtx_size - 43;
cbtx[41] = cbtx_size - 42; /* scriptsig length */
le32enc((uint32_t *)(cbtx+cbtx_size), 0xffffffff); /* sequence */
cbtx_size += 4;
cbtx[cbtx_size++] = 1; /* out-counter */
le32enc((uint32_t *)(cbtx+cbtx_size), (uint32_t)cbvalue); /* value */
le32enc((uint32_t *)(cbtx+cbtx_size+4), cbvalue >> 32);
cbtx_size += 8;
cbtx[cbtx_size++] = (uint8_t) pk_script_size; /* txout-script length */
memcpy(cbtx+cbtx_size, pk_script, pk_script_size);
cbtx_size += (int) pk_script_size;
le32enc((uint32_t *)(cbtx+cbtx_size), 0); /* lock time */
cbtx_size += 4;
coinbase_append = true;
}
if (coinbase_append) {
unsigned char xsig[100];
int xsig_len = 0;
if (*coinbase_sig) {
n = (int) strlen(coinbase_sig);
if (cbtx[41] + xsig_len + n <= 100) {
memcpy(xsig+xsig_len, coinbase_sig, n);
xsig_len += n;
} else {
applog(LOG_WARNING, "Signature does not fit in coinbase, skipping");
}
}
tmp = json_object_get(val, "coinbaseaux");
if (tmp && json_is_object(tmp)) {
void *iter = json_object_iter(tmp);
while (iter) {
unsigned char buf[100];
const char *s = json_string_value(json_object_iter_value(iter));
n = s ? (int) (strlen(s) / 2) : 0;
if (!s || n > 100 || !hex2bin(buf, s, n)) {
applog(LOG_ERR, "JSON invalid coinbaseaux");
break;
}
if (cbtx[41] + xsig_len + n <= 100) {
memcpy(xsig+xsig_len, buf, n);
xsig_len += n;
}
iter = json_object_iter_next(tmp, iter);
}
}
if (xsig_len) {
unsigned char *ssig_end = cbtx + 42 + cbtx[41];
int push_len = cbtx[41] + xsig_len < 76 ? 1 :
cbtx[41] + 2 + xsig_len > 100 ? 0 : 2;
n = xsig_len + push_len;
memmove(ssig_end + n, ssig_end, cbtx_size - 42 - cbtx[41]);
cbtx[41] += n;
if (push_len == 2)
*(ssig_end++) = 0x4c; /* OP_PUSHDATA1 */
if (push_len)
*(ssig_end++) = xsig_len;
memcpy(ssig_end, xsig, xsig_len);
cbtx_size += n;
}
}
n = varint_encode(txc_vi, 1 + tx_count);
work->txs = (char*) malloc(2 * (n + cbtx_size + tx_size) + 1);
bin2hex(work->txs, txc_vi, n);
bin2hex(work->txs + 2*n, cbtx, cbtx_size);
/* generate merkle root */
merkle_tree = (uchar(*)[32]) calloc(((1 + tx_count + 1) & ~1), 32);
sha256d(merkle_tree[0], cbtx, cbtx_size);
for (i = 0; i < tx_count; i++) {
tmp = json_array_get(txa, i);
const char *tx_hex = json_string_value(json_object_get(tmp, "data"));
const int tx_size = tx_hex ? (int) (strlen(tx_hex) / 2) : 0;
unsigned char *tx = (uchar*) malloc(tx_size);
if (!tx_hex || !hex2bin(tx, tx_hex, tx_size)) {
applog(LOG_ERR, "JSON invalid transactions");
free(tx);
goto out;
}
sha256d(merkle_tree[1 + i], tx, tx_size);
if (!submit_coinbase)
strcat(work->txs, tx_hex);
}
n = 1 + tx_count;
while (n > 1) {
if (n % 2) {
memcpy(merkle_tree[n], merkle_tree[n-1], 32);
++n;
}
n /= 2;
for (i = 0; i < n; i++)
sha256d(merkle_tree[i], merkle_tree[2*i], 64);
}
/* assemble block header */
work->data[0] = swab32(version);
for (i = 0; i < 8; i++)
work->data[8 - i] = le32dec(prevhash + i);
for (i = 0; i < 8; i++)
work->data[9 + i] = be32dec((uint32_t *)merkle_tree[0] + i);
work->data[17] = swab32(curtime);
work->data[18] = le32dec(&bits);
memset(work->data + 19, 0x00, 52);
work->data[20] = 0x80000000;
work->data[31] = 0x00000280;
if (unlikely(!jobj_binary(val, "target", target, sizeof(target)))) {
applog(LOG_ERR, "JSON invalid target");
goto out;
}
for (i = 0; i < ARRAY_SIZE(work->target); i++)
work->target[7 - i] = be32dec(target + i);
tmp = json_object_get(val, "workid");
if (tmp) {
if (!json_is_string(tmp)) {
applog(LOG_ERR, "JSON invalid workid");
goto out;
}
work->workid = strdup(json_string_value(tmp));
}
rc = true;
out:
/* Long polling */
tmp = json_object_get(val, "longpollid");
if (want_longpoll && json_is_string(tmp)) {
free(lp_id);
lp_id = strdup(json_string_value(tmp));
if (!have_longpoll) {
char *lp_uri;
tmp = json_object_get(val, "longpolluri");
lp_uri = json_is_string(tmp) ? strdup(json_string_value(tmp)) : rpc_url;
have_longpoll = true;
tq_push(thr_info[longpoll_thr_id].q, lp_uri);
}
}
free(merkle_tree);
free(cbtx);