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util.c
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util.c
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/*
* 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 "sysinfos.c"
#include <time.h>
#include <sys/stat.h>
#include <math.h>
//#include <syslog.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 "elist.h"
#include "algo-gate-api.h"
#include "algo/sha/sha256d.h"
struct header_info {
char *lp_path;
char *reason;
char *stratum_url;
size_t content_length;
};
struct data_buffer {
void *buf;
size_t len;
size_t allocated;
struct header_info *headers;
};
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;
};
bool is_power_of_2( int n )
{
while ( n > 1 )
{
if ( n % 2 != 0 ) return false;
n = n / 2;
}
return true;
}
// Dsiplay prefix only with no colour & no nl, add more message and nl later
// with printf.
// No atomicity between prefix and message.
void applog_nl( const char *fmt, ... )
{
va_list ap;
va_start( ap, fmt );
int len = 64 + (int) strlen( fmt ) + 2;
struct tm tm;
char *f = (char*)malloc( len );
time_t now = time(NULL);
localtime_r( &now, &tm );
sprintf(f, "[%d-%02d-%02d %02d:%02d:%02d] %s",
tm.tm_year + 1900,
tm.tm_mon + 1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec,
fmt
);
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 );
}
void applog2( 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_CRIT: color = CL_LRD; break;
case LOG_ERR: color = CL_RED; break;
case LOG_WARNING: color = CL_YL2; break;
case LOG_MAJR: color = CL_YL2; break;
case LOG_NOTICE: color = CL_WHT; break;
case LOG_INFO: color = ""; break;
case LOG_DEBUG: color = CL_GRY; break;
case LOG_MINR: color = CL_YLW; break;
case LOG_GREEN: color = CL_GRN; prio = LOG_INFO; break;
case LOG_BLUE: color = CL_CYN; prio = LOG_NOTICE; break;
case LOG_PINK: color = CL_LMA; prio = LOG_NOTICE; break;
}
if (!use_colors)
color = "";
len = 64 + (int) strlen(fmt) + 2;
f = (char*) malloc(len);
sprintf(f, " %s %s%s\n",
// 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);
}
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);
char *bell = "";
localtime_r(&now, &tm);
switch ( prio )
{
case LOG_CRIT: color = CL_LRD; break;
case LOG_ERR: color = CL_RED; break;
case LOG_WARNING: color = CL_YL2; break;
case LOG_MAJR: color = CL_YL2; break;
case LOG_NOTICE: color = CL_WHT; break;
case LOG_INFO: color = ""; break;
case LOG_DEBUG: color = CL_GRY; break;
case LOG_MINR: color = CL_YLW; break;
case LOG_GREEN: color = CL_GRN; prio = LOG_INFO; break;
case LOG_BLUE: color = CL_CYN; prio = LOG_NOTICE; break;
case LOG_PINK: color = CL_LMA; prio = LOG_NOTICE; break;
}
if (!use_colors)
color = "";
if ( opt_bell && ( prio == LOG_WARNING || prio == LOG_ERR ) )
*bell = ASCII_BELL;
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);
}
void log_sw_err( char* filename, int line_number, char* msg )
{
applog( LOG_ERR, "SW_ERR: %s:%d, %s", filename, line_number, msg );
}
/* 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
);
}
// For use with MiB etc
void format_number_si( double* n, char* si_units )
{
if ( *n < 1024*10 ) { *si_units = 0; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'k'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'M'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'G'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'T'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'P'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'E'; return; }
*n /= 1024;
if ( *n < 1024*10 ) { *si_units = 'Z'; return; }
*n /= 1024;
*si_units = 'Y';
}
/* 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 = user_data;
size_t len = size * nmemb;
size_t newalloc, reqalloc;
void *newmem;
static const unsigned char zero = 0;
static const size_t max_realloc_increase = 8 * 1024 * 1024;
static const size_t initial_alloc = 16 * 1024;
/* minimum required allocation size */
reqalloc = db->len + len + 1;
if (reqalloc > db->allocated) {
if (db->len > 0) {
newalloc = db->allocated * 2;
} else {
if (db->headers->content_length > 0)
newalloc = db->headers->content_length + 1;
else
newalloc = initial_alloc;
}
if (db->headers->content_length == 0) {
/* limit the maximum buffer increase */
if (newalloc - db->allocated > max_realloc_increase)
newalloc = db->allocated + max_realloc_increase;
}
/* ensure we have a big enough allocation */
if (reqalloc > newalloc)
newalloc = reqalloc;
newmem = realloc(db->buf, newalloc);
if (!newmem)
return 0;
db->buf = newmem;
db->allocated = newalloc;
}
memcpy(db->buf + db->len, ptr, len); /* append new data */
memcpy(db->buf + db->len + len, &zero, 1); /* null terminate */
db->len += len;
return len;
}
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;
}
if (!strcasecmp("Content-Length", key))
hi->content_length = strtoul(val, NULL, 10);
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};
char *json_buf;
json_error_t err;
struct curl_slist *headers = NULL;
char curl_err_str[CURL_ERROR_SIZE] = { 0 };
long timeout = (flags & JSON_RPC_LONGPOLL) ? opt_timeout : 30;
struct header_info hi = {0};
all_data.headers = &hi;
/* 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_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_POSTFIELDS, rpc_req);
if (opt_protocol)
applog(LOG_DEBUG, "JSON protocol request:\n%s\n", rpc_req);
headers = curl_slist_append(headers, "Content-Type: application/json");
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;
}
// want_stratum is useless, and so is this code it seems. Nothing in
// hi appears to be set.
/* 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 memrev(unsigned char *p, size_t len)
{
if ( len == 32 )
{
v128u32_t *pv = (v128_t*)p;
v128u32_t t = v128_bswap128( pv[0] );
pv[0] = v128_bswap128( pv[1] );
pv[1] = t;
}
else
{
unsigned char c, *q;
for (q = p + len - 1; p < q; p++, q--)
{
c = *p;
*p = *q;
*q = c;
}
}
}
void cbin2hex(char *out, const char *in, size_t len)
{
if (out) {
unsigned int i;
for (i = 0; i < len; i++)
sprintf(out + (i * 2), "%02x", (uint8_t)in[i]);
}
}
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;
}
char *bebin2hex(const unsigned char *p, size_t len)
{
char *s = (char*) malloc((len * 2) + 1);
if (!s) return NULL;
for ( size_t i = 0, j = len - 1; i < len; i++, j-- )
sprintf( s + ( i*2 ), "%02x", (unsigned int) p[ j ] );
return s;
}
bool hex2bin( unsigned char *p, const char *hexstr, const size_t len )
{
if( hexstr == NULL ) return false;
size_t hexstr_len = strlen( hexstr );
if( ( hexstr_len % 2 ) != 0 )
{
applog( LOG_ERR, "hex2bin string truncated" );
return false;
}
size_t bin_len = hexstr_len / 2;
if ( bin_len > len )
{
applog( LOG_ERR, "hex2bin buffer too small" );
return false;
}
memset( p, 0, len );
size_t i = 0;
while ( i < hexstr_len )
{
char c = hexstr[i];
unsigned char nibble;
if ( c >= '0' && c <= '9' ) nibble = (c - '0');
else if ( c >= 'A' && c <= 'F' ) nibble = ( 10 + (c - 'A') );
else if ( c >= 'a' && c <= 'f' ) nibble = ( 10 + (c - 'a') );
else
{
applog( LOG_ERR, "hex2bin invalid hex" );
return false;
}
p[(i / 2)] |= (nibble << ( (1 - (i % 2) ) * 4) );
i++;
}
return true;
}
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;
}