forked from tpruvot/cpuminer-multi
/
util.c
2431 lines (2063 loc) · 56.4 KB
/
util.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright 2010 Jeff Garzik
* Copyright 2012 Luke Dashjr
* Copyright 2012-2014 pooler
*
* 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.
*/
#define _GNU_SOURCE
#include <cpuminer-config.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include <stdbool.h>
#include <inttypes.h>
#include <limits.h>
#include <errno.h>
#include <unistd.h>
#include <jansson.h>
#include <curl/curl.h>
#include <time.h>
#include <sys/stat.h>
#if defined(WIN32)
#include <winsock2.h>
#include <mstcpip.h>
#include "compat/winansi.h"
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif
#ifndef _MSC_VER
/* dirname() linux/mingw, else in compat.h */
#include <libgen.h>
#endif
#include "miner.h"
#include "elist.h"
extern pthread_mutex_t stats_lock;
struct data_buffer {
void *buf;
size_t len;
};
struct upload_buffer {
const void *buf;
size_t len;
size_t pos;
};
struct header_info {
char *lp_path;
char *reason;
char *stratum_url;
};
struct tq_ent {
void *data;
struct list_head q_node;
};
struct thread_q {
struct list_head q;
bool frozen;
pthread_mutex_t mutex;
pthread_cond_t cond;
};
void applog(int prio, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
#ifdef HAVE_SYSLOG_H
if (use_syslog) {
va_list ap2;
char *buf;
int len;
/* custom colors to syslog prio */
if (prio > LOG_DEBUG) {
switch (prio) {
case LOG_BLUE: prio = LOG_NOTICE; break;
}
}
va_copy(ap2, ap);
len = vsnprintf(NULL, 0, fmt, ap2) + 1;
va_end(ap2);
buf = alloca(len);
if (vsnprintf(buf, len, fmt, ap) >= 0)
syslog(prio, "%s", buf);
}
#else
if (0) {}
#endif
else {
const char* color = "";
char *f;
int len;
struct tm tm;
time_t now = time(NULL);
localtime_r(&now, &tm);
switch (prio) {
case LOG_ERR: color = CL_RED; break;
case LOG_WARNING: color = CL_YLW; break;
case LOG_NOTICE: color = CL_WHT; break;
case LOG_INFO: color = ""; break;
case LOG_DEBUG: color = CL_GRY; break;
case LOG_BLUE:
prio = LOG_NOTICE;
color = CL_CYN;
break;
}
if (!use_colors)
color = "";
len = 64 + (int) strlen(fmt) + 2;
f = (char*) malloc(len);
sprintf(f, "[%d-%02d-%02d %02d:%02d:%02d]%s %s%s\n",
tm.tm_year + 1900,
tm.tm_mon + 1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec,
color,
fmt,
use_colors ? CL_N : ""
);
pthread_mutex_lock(&applog_lock);
vfprintf(stdout, f, ap); /* atomic write to stdout */
fflush(stdout);
free(f);
pthread_mutex_unlock(&applog_lock);
}
va_end(ap);
}
/* Get default config.json path (will be system specific) */
void get_defconfig_path(char *out, size_t bufsize, char *argv0)
{
char *cmd = strdup(argv0);
char *dir = dirname(cmd);
const char *sep = strstr(dir, "\\") ? "\\" : "/";
struct stat info = { 0 };
#ifdef WIN32
snprintf(out, bufsize, "%s\\cpuminer\\cpuminer-conf.json", getenv("APPDATA"));
#else
snprintf(out, bufsize, "%s\\.cpuminer\\cpuminer-conf.json", getenv("HOME"));
#endif
if (dir && stat(out, &info) != 0) {
snprintf(out, bufsize, "%s%scpuminer-conf.json", dir, sep);
}
if (stat(out, &info) != 0) {
out[0] = '\0';
return;
}
out[bufsize - 1] = '\0';
free(cmd);
}
void format_hashrate(double hashrate, char *output)
{
char prefix = '\0';
if (hashrate < 10000) {
// nop
}
else if (hashrate < 1e7) {
prefix = 'k';
hashrate *= 1e-3;
}
else if (hashrate < 1e10) {
prefix = 'M';
hashrate *= 1e-6;
}
else if (hashrate < 1e13) {
prefix = 'G';
hashrate *= 1e-9;
}
else {
prefix = 'T';
hashrate *= 1e-12;
}
sprintf(
output,
prefix ? "%.2f %cH/s" : "%.2f H/s%c",
hashrate, prefix
);
}
/* Modify the representation of integer numbers which would cause an overflow
* so that they are treated as floating-point numbers.
* This is a hack to overcome the limitations of some versions of Jansson. */
static char *hack_json_numbers(const char *in)
{
char *out;
int i, off, intoff;
bool in_str, in_int;
out = (char*) calloc(2 * strlen(in) + 1, 1);
if (!out)
return NULL;
off = intoff = 0;
in_str = in_int = false;
for (i = 0; in[i]; i++) {
char c = in[i];
if (c == '"') {
in_str = !in_str;
} else if (c == '\\') {
out[off++] = c;
if (!in[++i])
break;
} else if (!in_str && !in_int && isdigit(c)) {
intoff = off;
in_int = true;
} else if (in_int && !isdigit(c)) {
if (c != '.' && c != 'e' && c != 'E' && c != '+' && c != '-') {
in_int = false;
if (off - intoff > 4) {
char *end;
#if JSON_INTEGER_IS_LONG_LONG
errno = 0;
strtoll(out + intoff, &end, 10);
if (!*end && errno == ERANGE) {
#else
long l;
errno = 0;
l = strtol(out + intoff, &end, 10);
if (!*end && (errno == ERANGE || l > INT_MAX)) {
#endif
out[off++] = '.';
out[off++] = '0';
}
}
}
}
out[off++] = in[i];
}
return out;
}
static void databuf_free(struct data_buffer *db)
{
if (!db)
return;
free(db->buf);
memset(db, 0, sizeof(*db));
}
static size_t all_data_cb(const void *ptr, size_t size, size_t nmemb,
void *user_data)
{
struct data_buffer *db = (struct data_buffer *) user_data;
size_t len = size * nmemb;
size_t oldlen, newlen;
void *newmem;
static const unsigned char zero = 0;
oldlen = db->len;
newlen = oldlen + len;
newmem = realloc(db->buf, newlen + 1);
if (!newmem)
return 0;
db->buf = newmem;
db->len = newlen;
memcpy((uchar*) db->buf + oldlen, ptr, len);
memcpy((uchar*) db->buf + newlen, &zero, 1); /* null terminate */
return len;
}
static size_t upload_data_cb(void *ptr, size_t size, size_t nmemb,
void *user_data)
{
struct upload_buffer *ub = (struct upload_buffer *) user_data;
size_t len = size * nmemb;
if (len > ub->len - ub->pos)
len = ub->len - ub->pos;
if (len) {
memcpy(ptr, ((uchar*)ub->buf) + ub->pos, len);
ub->pos += len;
}
return len;
}
#if LIBCURL_VERSION_NUM >= 0x071200
static int seek_data_cb(void *user_data, curl_off_t offset, int origin)
{
struct upload_buffer *ub = (struct upload_buffer *) user_data;
switch (origin) {
case SEEK_SET:
ub->pos = (size_t) offset;
break;
case SEEK_CUR:
ub->pos += (size_t) offset;
break;
case SEEK_END:
ub->pos = ub->len + (size_t) offset;
break;
default:
return 1; /* CURL_SEEKFUNC_FAIL */
}
return 0; /* CURL_SEEKFUNC_OK */
}
#endif
static size_t resp_hdr_cb(void *ptr, size_t size, size_t nmemb, void *user_data)
{
struct header_info *hi = (struct header_info *) user_data;
size_t remlen, slen, ptrlen = size * nmemb;
char *rem, *val = NULL, *key = NULL;
void *tmp;
val = (char*) calloc(1, ptrlen);
key = (char*) calloc(1, ptrlen);
if (!key || !val)
goto out;
tmp = memchr(ptr, ':', ptrlen);
if (!tmp || (tmp == ptr)) /* skip empty keys / blanks */
goto out;
slen = (char*)tmp - (char*)ptr;
if ((slen + 1) == ptrlen) /* skip key w/ no value */
goto out;
memcpy(key, ptr, slen); /* store & nul term key */
key[slen] = 0;
rem = (char*)ptr + slen + 1; /* trim value's leading whitespace */
remlen = ptrlen - slen - 1;
while ((remlen > 0) && (isspace(*rem))) {
remlen--;
rem++;
}
memcpy(val, rem, remlen); /* store value, trim trailing ws */
val[remlen] = 0;
while ((*val) && (isspace(val[strlen(val) - 1]))) {
val[strlen(val) - 1] = 0;
}
if (!strcasecmp("X-Long-Polling", key)) {
hi->lp_path = val; /* steal memory reference */
val = NULL;
}
if (!strcasecmp("X-Reject-Reason", key)) {
hi->reason = val; /* steal memory reference */
val = NULL;
}
if (!strcasecmp("X-Stratum", key)) {
hi->stratum_url = val; /* steal memory reference */
val = NULL;
}
out:
free(key);
free(val);
return ptrlen;
}
#if LIBCURL_VERSION_NUM >= 0x070f06
static int sockopt_keepalive_cb(void *userdata, curl_socket_t fd,
curlsocktype purpose)
{
#ifdef __linux
int tcp_keepcnt = 3;
#endif
int tcp_keepintvl = 50;
int tcp_keepidle = 50;
#ifndef WIN32
int keepalive = 1;
if (unlikely(setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &keepalive,
sizeof(keepalive))))
return 1;
#ifdef __linux
if (unlikely(setsockopt(fd, SOL_TCP, TCP_KEEPCNT,
&tcp_keepcnt, sizeof(tcp_keepcnt))))
return 1;
if (unlikely(setsockopt(fd, SOL_TCP, TCP_KEEPIDLE,
&tcp_keepidle, sizeof(tcp_keepidle))))
return 1;
if (unlikely(setsockopt(fd, SOL_TCP, TCP_KEEPINTVL,
&tcp_keepintvl, sizeof(tcp_keepintvl))))
return 1;
#endif /* __linux */
#ifdef __APPLE_CC__
if (unlikely(setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE,
&tcp_keepintvl, sizeof(tcp_keepintvl))))
return 1;
#endif /* __APPLE_CC__ */
#else /* WIN32 */
struct tcp_keepalive vals;
vals.onoff = 1;
vals.keepalivetime = tcp_keepidle * 1000;
vals.keepaliveinterval = tcp_keepintvl * 1000;
DWORD outputBytes;
if (unlikely(WSAIoctl(fd, SIO_KEEPALIVE_VALS, &vals, sizeof(vals),
NULL, 0, &outputBytes, NULL, NULL)))
return 1;
#endif /* WIN32 */
return 0;
}
#endif
json_t *json_rpc_call(CURL *curl, const char *url,
const char *userpass, const char *rpc_req,
int *curl_err, int flags)
{
json_t *val, *err_val, *res_val;
int rc;
long http_rc;
struct data_buffer all_data = {0};
struct upload_buffer upload_data;
char *json_buf;
json_error_t err;
struct curl_slist *headers = NULL;
char len_hdr[64];
char curl_err_str[CURL_ERROR_SIZE] = { 0 };
long timeout = (flags & JSON_RPC_LONGPOLL) ? opt_timeout : 30;
struct header_info hi = {0};
/* it is assumed that 'curl' is freshly [re]initialized at this pt */
if (opt_protocol)
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
curl_easy_setopt(curl, CURLOPT_URL, url);
if (opt_cert)
curl_easy_setopt(curl, CURLOPT_CAINFO, opt_cert);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false);
curl_easy_setopt(curl, CURLOPT_ENCODING, "");
curl_easy_setopt(curl, CURLOPT_FAILONERROR, 0);
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 1);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, all_data_cb);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &all_data);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, upload_data_cb);
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_data);
#if LIBCURL_VERSION_NUM >= 0x071200
curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, &seek_data_cb);
curl_easy_setopt(curl, CURLOPT_SEEKDATA, &upload_data);
#endif
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_err_str);
if (opt_redirect)
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, resp_hdr_cb);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &hi);
if (opt_proxy) {
curl_easy_setopt(curl, CURLOPT_PROXY, opt_proxy);
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, opt_proxy_type);
}
if (userpass) {
curl_easy_setopt(curl, CURLOPT_USERPWD, userpass);
curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
}
#if LIBCURL_VERSION_NUM >= 0x070f06
if (flags & JSON_RPC_LONGPOLL)
curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_keepalive_cb);
#endif
curl_easy_setopt(curl, CURLOPT_POST, 1);
if (opt_protocol)
applog(LOG_DEBUG, "JSON protocol request:\n%s\n", rpc_req);
upload_data.buf = rpc_req;
upload_data.len = strlen(rpc_req);
upload_data.pos = 0;
sprintf(len_hdr, "Content-Length: %lu",
(unsigned long) upload_data.len);
headers = curl_slist_append(headers, "Content-Type: application/json");
headers = curl_slist_append(headers, len_hdr);
headers = curl_slist_append(headers, "User-Agent: " USER_AGENT);
headers = curl_slist_append(headers, "X-Mining-Extensions: longpoll reject-reason");
//headers = curl_slist_append(headers, "Accept:"); /* disable Accept hdr*/
//headers = curl_slist_append(headers, "Expect:"); /* disable Expect hdr*/
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
rc = curl_easy_perform(curl);
if (curl_err != NULL)
*curl_err = rc;
if (rc) {
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_rc);
if (!((flags & JSON_RPC_LONGPOLL) && rc == CURLE_OPERATION_TIMEDOUT) &&
!((flags & JSON_RPC_QUIET_404) && http_rc == 404))
applog(LOG_ERR, "HTTP request failed: %s", curl_err_str);
if (curl_err && (flags & JSON_RPC_QUIET_404) && http_rc == 404)
*curl_err = CURLE_OK;
goto err_out;
}
/* If X-Stratum was found, activate Stratum */
if (want_stratum && hi.stratum_url &&
!strncasecmp(hi.stratum_url, "stratum+tcp://", 14)) {
have_stratum = true;
tq_push(thr_info[stratum_thr_id].q, hi.stratum_url);
hi.stratum_url = NULL;
}
/* If X-Long-Polling was found, activate long polling */
if (!have_longpoll && want_longpoll && hi.lp_path && !have_gbt &&
allow_getwork && !have_stratum) {
have_longpoll = true;
tq_push(thr_info[longpoll_thr_id].q, hi.lp_path);
hi.lp_path = NULL;
}
if (!all_data.buf) {
applog(LOG_ERR, "Empty data received in json_rpc_call.");
goto err_out;
}
json_buf = hack_json_numbers((char*) all_data.buf);
errno = 0; /* needed for Jansson < 2.1 */
val = JSON_LOADS(json_buf, &err);
free(json_buf);
if (!val) {
applog(LOG_ERR, "JSON decode failed(%d): %s", err.line, err.text);
goto err_out;
}
if (opt_protocol) {
char *s = json_dumps(val, JSON_INDENT(3));
applog(LOG_DEBUG, "JSON protocol response:\n%s", s);
free(s);
}
/* JSON-RPC valid response returns a 'result' and a null 'error'. */
res_val = json_object_get(val, "result");
err_val = json_object_get(val, "error");
if (!res_val || (err_val && !json_is_null(err_val)
&& !(flags & JSON_RPC_IGNOREERR))) {
char *s = NULL;
if (err_val) {
s = json_dumps(err_val, 0);
json_t *msg = json_object_get(err_val, "message");
json_t *err_code = json_object_get(err_val, "code");
if (curl_err && json_integer_value(err_code))
*curl_err = (int)json_integer_value(err_code);
if (msg && json_is_string(msg)) {
free(s);
s = strdup(json_string_value(msg));
if (have_longpoll && s && !strcmp(s, "method not getwork")) {
json_decref(err_val);
free(s);
goto err_out;
}
}
json_decref(err_val);
}
else
s = strdup("(unknown reason)");
if (!curl_err || opt_debug)
applog(LOG_ERR, "JSON-RPC call failed: %s", s);
free(s);
goto err_out;
}
if (hi.reason)
json_object_set_new(val, "reject-reason", json_string(hi.reason));
databuf_free(&all_data);
curl_slist_free_all(headers);
curl_easy_reset(curl);
return val;
err_out:
free(hi.lp_path);
free(hi.reason);
free(hi.stratum_url);
databuf_free(&all_data);
curl_slist_free_all(headers);
curl_easy_reset(curl);
return NULL;
}
/* used to load a remote config */
json_t* json_load_url(char* cfg_url, json_error_t *err)
{
char err_str[CURL_ERROR_SIZE] = { 0 };
struct data_buffer all_data = { 0 };
int rc = 0; json_t *cfg = NULL;
CURL *curl = curl_easy_init();
if (unlikely(!curl)) {
applog(LOG_ERR, "Remote config init failed!");
return NULL;
}
curl_easy_setopt(curl, CURLOPT_URL, cfg_url);
curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1);
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 15);
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, err_str);
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 1);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, all_data_cb);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &all_data);
if (opt_proxy) {
curl_easy_setopt(curl, CURLOPT_PROXY, opt_proxy);
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, opt_proxy_type);
} else if (getenv("http_proxy")) {
if (getenv("all_proxy"))
curl_easy_setopt(curl, CURLOPT_PROXY, getenv("all_proxy"));
else if (getenv("ALL_PROXY"))
curl_easy_setopt(curl, CURLOPT_PROXY, getenv("ALL_PROXY"));
else
curl_easy_setopt(curl, CURLOPT_PROXY, "");
}
rc = curl_easy_perform(curl);
if (rc) {
applog(LOG_ERR, "Remote config read failed: %s", err_str);
goto err_out;
}
if (!all_data.buf || !all_data.len) {
applog(LOG_ERR, "Empty data received for config");
goto err_out;
}
cfg = JSON_LOADS((char*)all_data.buf, err);
err_out:
curl_easy_cleanup(curl);
return cfg;
}
void bin2hex(char *s, const unsigned char *p, size_t len)
{
for (size_t i = 0; i < len; i++)
sprintf(s + (i * 2), "%02x", (unsigned int) p[i]);
}
char *abin2hex(const unsigned char *p, size_t len)
{
char *s = (char*) malloc((len * 2) + 1);
if (!s)
return NULL;
bin2hex(s, p, len);
return s;
}
bool hex2bin(unsigned char *p, const char *hexstr, size_t len)
{
char hex_byte[3];
char *ep;
hex_byte[2] = '\0';
while (*hexstr && len) {
if (!hexstr[1]) {
applog(LOG_ERR, "hex2bin str truncated");
return false;
}
hex_byte[0] = hexstr[0];
hex_byte[1] = hexstr[1];
*p = (unsigned char) strtol(hex_byte, &ep, 16);
if (*ep) {
applog(LOG_ERR, "hex2bin failed on '%s'", hex_byte);
return false;
}
p++;
hexstr += 2;
len--;
}
return(!len) ? true : false;
/* return (len == 0 && *hexstr == 0) ? true : false; */
}
int varint_encode(unsigned char *p, uint64_t n)
{
int i;
if (n < 0xfd) {
p[0] = (uchar) n;
return 1;
}
if (n <= 0xffff) {
p[0] = 0xfd;
p[1] = n & 0xff;
p[2] = (uchar) (n >> 8);
return 3;
}
if (n <= 0xffffffff) {
p[0] = 0xfe;
for (i = 1; i < 5; i++) {
p[i] = n & 0xff;
n >>= 8;
}
return 5;
}
p[0] = 0xff;
for (i = 1; i < 9; i++) {
p[i] = n & 0xff;
n >>= 8;
}
return 9;
}
static const char b58digits[] = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
static bool b58dec(unsigned char *bin, size_t binsz, const char *b58)
{
size_t i, j;
uint64_t t;
uint32_t c;
uint32_t *outi;
size_t outisz = (binsz + 3) / 4;
int rem = binsz % 4;
uint32_t remmask = 0xffffffff << (8 * rem);
size_t b58sz = strlen(b58);
bool rc = false;
outi = (uint32_t *) calloc(outisz, sizeof(*outi));
for (i = 0; i < b58sz; ++i) {
for (c = 0; b58digits[c] != b58[i]; c++)
if (!b58digits[c])
goto out;
for (j = outisz; j--; ) {
t = (uint64_t)outi[j] * 58 + c;
c = t >> 32;
outi[j] = t & 0xffffffff;
}
if (c || outi[0] & remmask)
goto out;
}
j = 0;
switch (rem) {
case 3:
*(bin++) = (outi[0] >> 16) & 0xff;
case 2:
*(bin++) = (outi[0] >> 8) & 0xff;
case 1:
*(bin++) = outi[0] & 0xff;
++j;
default:
break;
}
for (; j < outisz; ++j) {
be32enc((uint32_t *)bin, outi[j]);
bin += sizeof(uint32_t);
}
rc = true;
out:
free(outi);
return rc;
}
static int b58check(unsigned char *bin, size_t binsz, const char *b58)
{
unsigned char buf[32];
int i;
sha256d(buf, bin, (int) (binsz - 4));
if (memcmp(&bin[binsz - 4], buf, 4))
return -1;
/* Check number of zeros is correct AFTER verifying checksum
* (to avoid possibility of accessing the string beyond the end) */
for (i = 0; bin[i] == '\0' && b58[i] == '1'; ++i);
if (bin[i] == '\0' || b58[i] == '1')
return -3;
return bin[0];
}
bool jobj_binary(const json_t *obj, const char *key, void *buf, size_t buflen)
{
const char *hexstr;
json_t *tmp;
tmp = json_object_get(obj, key);
if (unlikely(!tmp)) {
applog(LOG_ERR, "JSON key '%s' not found", key);
return false;
}
hexstr = json_string_value(tmp);
if (unlikely(!hexstr)) {
applog(LOG_ERR, "JSON key '%s' is not a string", key);
return false;
}
if (!hex2bin((uchar*) buf, hexstr, buflen))
return false;
return true;
}
size_t address_to_script(unsigned char *out, size_t outsz, const char *addr)
{
unsigned char addrbin[25];
int addrver;
size_t rv;
if (!b58dec(addrbin, sizeof(addrbin), addr))
return 0;
addrver = b58check(addrbin, sizeof(addrbin), addr);
if (addrver < 0)
return 0;
switch (addrver) {
case 5: /* Bitcoin script hash */
case 196: /* Testnet script hash */
if (outsz < (rv = 23))
return rv;
out[ 0] = 0xa9; /* OP_HASH160 */
out[ 1] = 0x14; /* push 20 bytes */
memcpy(&out[2], &addrbin[1], 20);
out[22] = 0x87; /* OP_EQUAL */
return rv;
default:
if (outsz < (rv = 25))
return rv;
out[ 0] = 0x76; /* OP_DUP */
out[ 1] = 0xa9; /* OP_HASH160 */
out[ 2] = 0x14; /* push 20 bytes */
memcpy(&out[3], &addrbin[1], 20);
out[23] = 0x88; /* OP_EQUALVERIFY */
out[24] = 0xac; /* OP_CHECKSIG */
return rv;
}
}
/* Subtract the `struct timeval' values X and Y,
storing the result in RESULT.
Return 1 if the difference is negative, otherwise 0. */
int timeval_subtract(struct timeval *result, struct timeval *x,
struct timeval *y)
{
/* Perform the carry for the later subtraction by updating Y. */
if (x->tv_usec < y->tv_usec) {
int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
y->tv_usec -= 1000000 * nsec;
y->tv_sec += nsec;
}
if (x->tv_usec - y->tv_usec > 1000000) {
int nsec = (x->tv_usec - y->tv_usec) / 1000000;
y->tv_usec += 1000000 * nsec;
y->tv_sec -= nsec;
}
/* Compute the time remaining to wait.
* `tv_usec' is certainly positive. */
result->tv_sec = x->tv_sec - y->tv_sec;
result->tv_usec = x->tv_usec - y->tv_usec;
/* Return 1 if result is negative. */
return x->tv_sec < y->tv_sec;
}
bool fulltest(const uint32_t *hash, const uint32_t *target)
{
int i;
bool rc = true;
for (i = 7; i >= 0; i--) {
if (hash[i] > target[i]) {
rc = false;
break;
}
if (hash[i] < target[i]) {
rc = true;
break;
}
}
if (opt_debug) {
uint32_t hash_be[8], target_be[8];
char hash_str[65], target_str[65];
for (i = 0; i < 8; i++) {
be32enc(hash_be + i, hash[7 - i]);
be32enc(target_be + i, target[7 - i]);
}
bin2hex(hash_str, (unsigned char *)hash_be, 32);
bin2hex(target_str, (unsigned char *)target_be, 32);
applog(LOG_DEBUG, "DEBUG: %s\nHash: %s\nTarget: %s",
rc ? "hash <= target"
: "hash > target (false positive)",
hash_str,
target_str);
}
return rc;
}
void diff_to_target(uint32_t *target, double diff)
{
uint64_t m;
int k;
for (k = 6; k > 0 && diff > 1.0; k--)
diff /= 4294967296.0;
m = (uint64_t)(4294901760.0 / diff);
if (m == 0 && k == 6)
memset(target, 0xff, 32);
else {
memset(target, 0, 32);
target[k] = (uint32_t)m;
target[k + 1] = (uint32_t)(m >> 32);
}
}
// Only used by stratum pools
void work_set_target(struct work* work, double diff)
{
diff_to_target(work->target, diff);
work->targetdiff = diff;
}
// Only used by longpoll pools
double target_to_diff(uint32_t* target)
{
uchar* tgt = (uchar*) target;
uint64_t m =
(uint64_t)tgt[29] << 56 |
(uint64_t)tgt[28] << 48 |
(uint64_t)tgt[27] << 40 |
(uint64_t)tgt[26] << 32 |
(uint64_t)tgt[25] << 24 |
(uint64_t)tgt[24] << 16 |
(uint64_t)tgt[23] << 8 |
(uint64_t)tgt[22] << 0;
if (!m)
return 0.;
else
return (double)0x0000ffff00000000/m;
}
#ifdef WIN32
#define socket_blocks() (WSAGetLastError() == WSAEWOULDBLOCK)
#else
#define socket_blocks() (errno == EAGAIN || errno == EWOULDBLOCK)
#endif
static bool send_line(curl_socket_t sock, char *s)
{
size_t sent = 0;
int len;
len = (int) strlen(s);
s[len++] = '\n';
while (len > 0) {
struct timeval timeout = {0, 0};
int n;
fd_set wd;
FD_ZERO(&wd);
FD_SET(sock, &wd);
if (select((int) (sock + 1), NULL, &wd, NULL, &timeout) < 1)
return false;
n = send(sock, s + sent, len, 0);
if (n < 0) {
if (!socket_blocks())
return false;
n = 0;
}
sent += n;
len -= n;
}
return true;
}