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api.c
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api.c
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/*
* Copyright 2014 ccminer team
*
* Implementation by tpruvot (based on cgminer)
*
* 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 APIVERSION "1.0"
#ifdef WIN32
# define _WINSOCK_DEPRECATED_NO_WARNINGS
# include <winsock2.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include <math.h>
#include <stdarg.h>
#include <assert.h>
#include <openssl/sha.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "miner.h"
#ifndef WIN32
# include <errno.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <netdb.h>
# define SOCKETTYPE long
# define SOCKETFAIL(a) ((a) < 0)
# define INVSOCK -1 /* INVALID_SOCKET */
# define INVINETADDR -1 /* INADDR_NONE */
# define CLOSESOCKET close
# define SOCKETINIT {}
# define SOCKERRMSG strerror(errno)
#else
# define SOCKETTYPE SOCKET
# define SOCKETFAIL(a) ((a) == SOCKET_ERROR)
# define INVSOCK INVALID_SOCKET
# define INVINETADDR INADDR_NONE
# define CLOSESOCKET closesocket
# define in_addr_t uint32_t
#endif
#define GROUP(g) (toupper(g))
#define PRIVGROUP GROUP('W')
#define NOPRIVGROUP GROUP('R')
#define ISPRIVGROUP(g) (GROUP(g) == PRIVGROUP)
#define GROUPOFFSET(g) (GROUP(g) - GROUP('A'))
#define VALIDGROUP(g) (GROUP(g) >= GROUP('A') && GROUP(g) <= GROUP('Z'))
#define COMMANDS(g) (apigroups[GROUPOFFSET(g)].commands)
#define DEFINEDGROUP(g) (ISPRIVGROUP(g) || COMMANDS(g) != NULL)
struct APIGROUPS {
// This becomes a string like: "|cmd1|cmd2|cmd3|" so it's quick to search
char *commands;
} apigroups['Z' - 'A' + 1]; // only A=0 to Z=25 (R: noprivs, W: allprivs)
struct IP4ACCESS {
in_addr_t ip;
in_addr_t mask;
char group;
};
static int ips = 1;
static struct IP4ACCESS *ipaccess = NULL;
// Socket data buffers
#define MYBUFSIZ 16384
#define SOCK_REC_BUFSZ 1024
// Socket is on 127.0.0.1
#define QUEUE 10
#define ALLIP4 "0.0.0.0"
static const char *localaddr = "127.0.0.1";
static const char *UNAVAILABLE = " - API will not be available";
static char *buffer = NULL;
static time_t startup = 0;
static int bye = 0;
extern char *opt_api_allow;
extern int opt_api_listen; /* port */
extern int opt_api_remote;
extern double global_hashrate;
extern uint32_t accepted_count;
extern uint32_t rejected_count;
extern uint32_t solved_count;
#define cpu_threads opt_n_threads
#define USE_MONITORING
extern float cpu_temp(int);
extern uint32_t cpu_clock(int);
extern int cpu_fanpercent(void);
/***************************************************************/
static void cpustatus(int thr_id)
{
if ( thr_id >= 0 && thr_id < opt_n_threads )
{
// struct cpu_info *cpu = &thr_info[thr_id].cpu;
char buf[512]; *buf = '\0';
char units[4] = {0};
double hashrate = thr_hashrates[thr_id];
scale_hash_for_display ( &hashrate, units );
snprintf( buf, sizeof(buf), "CPU=%d;%sH/s=%.2f|", thr_id, units,
hashrate );
// append to buffer
strcat( buffer, buf );
}
}
/*****************************************************************************/
/**
* Returns miner global infos
*/
static char *getsummary( char *params )
{
char algo[64]; *algo = '\0';
time_t ts = time(NULL);
double uptime = difftime(ts, startup);
double accps = (60.0 * accepted_count) / (uptime ? uptime : 1.0);
double diff = net_diff > 0. ? net_diff : stratum_diff;
char diff_str[16];
double hrate = (double)global_hashrate;
struct cpu_info cpu = { 0 };
#ifdef USE_MONITORING
cpu.has_monitoring = true;
cpu.cpu_temp = cpu_temp(0);
cpu.cpu_fan = cpu_fanpercent();
cpu.cpu_clock = cpu_clock(0);
#endif
get_currentalgo(algo, sizeof(algo));
// if diff is integer don't display decimals
if ( diff == trunc( diff ) )
sprintf( diff_str, "%.0f", diff);
else
sprintf( diff_str, "%.6f", diff);
*buffer = '\0';
sprintf( buffer, "NAME=%s;VER=%s;API=%s;"
"ALGO=%s;CPUS=%d;URL=%s;"
"HS=%.2f;KHS=%.2f;ACC=%d;REJ=%d;SOL=%d;"
"ACCMN=%.3f;DIFF=%s;TEMP=%.1f;FAN=%d;FREQ=%d;"
"UPTIME=%.0f;TS=%u|",
PACKAGE_NAME, PACKAGE_VERSION, APIVERSION,
algo, opt_n_threads, short_url, hrate, hrate/1000.0,
accepted_count, rejected_count, solved_count,
accps, diff_str, cpu.cpu_temp, cpu.cpu_fan, cpu.cpu_clock,
uptime, (uint32_t) ts);
return buffer;
}
/**
* Returns cpu/thread specific stats
*/
static char *getthreads(char *params)
{
*buffer = '\0';
for (int i = 0; i < opt_n_threads; i++)
cpustatus(i);
return buffer;
}
/**
* Is remote control allowed ?
*/
static bool check_remote_access(void)
{
return (opt_api_remote > 0);
}
/**
* Change pool url (see --url parameter)
* seturl|stratum+tcp://XeVrkPrWB7pDbdFLfKhF1Z3xpqhsx6wkH3:X@stratum+tcp://mine.xpool.ca:1131|
* seturl|stratum+tcp://Danila.1:X@pool.ipominer.com:3335|
*/
extern bool stratum_need_reset;
static char *remote_seturl(char *params)
{
*buffer = '\0';
if (!check_remote_access())
return buffer;
parse_arg('o', params);
stratum_need_reset = true;
sprintf(buffer, "%s", "ok|");
return buffer;
}
/**
* Ask the miner to quit
*/
static char *remote_quit(char *params)
{
*buffer = '\0';
if (!check_remote_access())
return buffer;
bye = 1;
sprintf(buffer, "%s", "bye|");
return buffer;
}
static char *gethelp(char *params);
struct CMDS {
const char *name;
char *(*func)(char *);
} cmds[] = {
{ "summary", getsummary },
{ "threads", getthreads },
/* remote functions */
{ "seturl", remote_seturl },
{ "quit", remote_quit },
/* keep it the last */
{ "help", gethelp },
};
#define CMDMAX ARRAY_SIZE(cmds)
static char *gethelp(char *params)
{
*buffer = '\0';
char * p = buffer;
for (int i = 0; i < CMDMAX-1; i++)
p += sprintf(p, "%s\n", cmds[i].name);
sprintf(p, "|");
return buffer;
}
static int send_result(SOCKETTYPE c, char *result)
{
int n;
if (!result) {
n = (int) send(c, "", 1, 0);
} else {
// ignore failure - it's closed immediately anyway
n = (int) send(c, result, (int) strlen(result) + 1, 0);
}
return n;
}
/* ---- Base64 Encoding/Decoding Table --- */
static const char table64[]=
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static size_t base64_encode(const uchar *indata, size_t insize, char *outptr, size_t outlen)
{
uchar ibuf[3];
uchar obuf[4];
int i, inputparts, inlen = (int) insize;
size_t len = 0;
char *output, *outbuf;
memset(outptr, 0, outlen);
outbuf = output = (char*)calloc(1, inlen * 4 / 3 + 4);
if (outbuf == NULL) {
return -1;
}
while (inlen > 0) {
for (i = inputparts = 0; i < 3; i++) {
if (inlen > 0) {
inputparts++;
ibuf[i] = (uchar) *indata;
indata++; inlen--;
}
else
ibuf[i] = 0;
}
obuf[0] = (uchar) ((ibuf[0] & 0xFC) >> 2);
obuf[1] = (uchar) (((ibuf[0] & 0x03) << 4) | ((ibuf[1] & 0xF0) >> 4));
obuf[2] = (uchar) (((ibuf[1] & 0x0F) << 2) | ((ibuf[2] & 0xC0) >> 6));
obuf[3] = (uchar) (ibuf[2] & 0x3F);
switch(inputparts) {
case 1: /* only one byte read */
snprintf(output, 5, "%c%c==",
table64[obuf[0]],
table64[obuf[1]]);
break;
case 2: /* two bytes read */
snprintf(output, 5, "%c%c%c=",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]]);
break;
default:
snprintf(output, 5, "%c%c%c%c",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]],
table64[obuf[3]] );
break;
}
if ((len+4) > outlen)
break;
output += 4; len += 4;
}
len = snprintf(outptr, len, "%s", outbuf);
// todo: seems to be missing on linux
if (strlen(outptr) == 27)
strcat(outptr, "=");
free(outbuf);
return len;
}
//#include "compat/curl-for-windows/openssl/openssl/crypto/sha/sha.h"
/* websocket handshake (tested in Chrome) */
static int websocket_handshake(SOCKETTYPE c, char *result, char *clientkey)
{
char answer[256];
char inpkey[128] = { 0 };
char seckey[64];
uchar sha1[20];
SHA_CTX ctx;
if (opt_protocol)
applog(LOG_DEBUG, "clientkey: %s", clientkey);
sprintf(inpkey, "%s258EAFA5-E914-47DA-95CA-C5AB0DC85B11", clientkey);
// SHA-1 test from rfc, returns in base64 "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
//sprintf(inpkey, "dGhlIHNhbXBsZSBub25jZQ==258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
SHA1_Init(&ctx);
SHA1_Update(&ctx, inpkey, strlen(inpkey));
SHA1_Final(sha1, &ctx);
base64_encode(sha1, 20, seckey, sizeof(seckey));
sprintf(answer,
"HTTP/1.1 101 Switching Protocol\r\n"
"Upgrade: WebSocket\r\nConnection: Upgrade\r\n"
"Sec-WebSocket-Accept: %s\r\n"
"Sec-WebSocket-Protocol: text\r\n"
"\r\n", seckey);
// data result as tcp frame
uchar hd[10] = { 0 };
hd[0] = 129; // 0x1 text frame (FIN + opcode)
uint64_t datalen = (uint64_t) strlen(result);
uint8_t frames = 2;
if (datalen <= 125) {
hd[1] = (uchar) (datalen);
} else if (datalen <= 65535) {
hd[1] = (uchar) 126;
hd[2] = (uchar) (datalen >> 8);
hd[3] = (uchar) (datalen);
frames = 4;
} else {
hd[1] = (uchar) 127;
hd[2] = (uchar) (datalen >> 56);
hd[3] = (uchar) (datalen >> 48);
hd[4] = (uchar) (datalen >> 40);
hd[5] = (uchar) (datalen >> 32);
hd[6] = (uchar) (datalen >> 24);
hd[7] = (uchar) (datalen >> 16);
hd[8] = (uchar) (datalen >> 8);
hd[9] = (uchar) (datalen);
frames = 10;
}
size_t handlen = strlen(answer);
uchar *data = (uchar*) calloc(1, handlen + frames + (size_t) datalen + 1);
if (data == NULL)
return -1;
else {
uchar *p = data;
// HTTP header 101
memcpy(p, answer, handlen);
p += handlen;
// WebSocket Frame - Header + Data
memcpy(p, hd, frames);
memcpy(p + frames, result, (size_t)datalen);
send(c, (const char*)data, (int) (strlen(answer) + frames + (size_t)datalen + 1), 0);
free(data);
}
return 0;
}
/*
* N.B. IP4 addresses are by Definition 32bit big endian on all platforms
*/
static void setup_ipaccess()
{
char *buf = NULL, *ptr, *comma, *slash, *dot;
int ipcount, mask, octet, i;
char group;
buf = (char*) calloc(1, strlen(opt_api_allow) + 1);
if (unlikely(!buf))
proper_exit(1);//, "Failed to malloc ipaccess buf");
strcpy(buf, opt_api_allow);
ipcount = 1;
ptr = buf;
while (*ptr) if (*(ptr++) == ',')
ipcount++;
// possibly more than needed, but never less
ipaccess = (struct IP4ACCESS *) calloc(ipcount, sizeof(struct IP4ACCESS));
if (unlikely(!ipaccess))
proper_exit(1);//, "Failed to calloc ipaccess");
ips = 0;
ptr = buf;
while (ptr && *ptr) {
while (*ptr == ' ' || *ptr == '\t')
ptr++;
if (*ptr == ',') {
ptr++;
continue;
}
comma = strchr(ptr, ',');
if (comma)
*(comma++) = '\0';
group = NOPRIVGROUP;
if (isalpha(*ptr) && *(ptr+1) == ':') {
if (DEFINEDGROUP(*ptr))
group = GROUP(*ptr);
ptr += 2;
}
ipaccess[ips].group = group;
if (strcmp(ptr, ALLIP4) == 0)
ipaccess[ips].ip = ipaccess[ips].mask = 0;
else
{
slash = strchr(ptr, '/');
if (!slash)
ipaccess[ips].mask = 0xffffffff;
else {
*(slash++) = '\0';
mask = atoi(slash);
if (mask < 1 || mask > 32)
goto popipo; // skip invalid/zero
ipaccess[ips].mask = 0;
while (mask-- >= 0) {
octet = 1 << (mask % 8);
ipaccess[ips].mask |= (octet << (24 - (8 * (mask >> 3))));
}
}
ipaccess[ips].ip = 0; // missing default to '.0'
for (i = 0; ptr && (i < 4); i++) {
dot = strchr(ptr, '.');
if (dot)
*(dot++) = '\0';
octet = atoi(ptr);
if (octet < 0 || octet > 0xff)
goto popipo; // skip invalid
ipaccess[ips].ip |= (octet << (24 - (i * 8)));
ptr = dot;
}
ipaccess[ips].ip &= ipaccess[ips].mask;
}
ips++;
popipo:
ptr = comma;
}
free(buf);
}
static bool check_connect(struct sockaddr_in *cli, char **connectaddr, char *group)
{
bool addrok = false;
*connectaddr = inet_ntoa(cli->sin_addr);
*group = NOPRIVGROUP;
if (opt_api_allow) {
int client_ip = htonl(cli->sin_addr.s_addr);
for (int i = 0; i < ips; i++) {
if ((client_ip & ipaccess[i].mask) == ipaccess[i].ip) {
addrok = true;
*group = ipaccess[i].group;
break;
}
}
}
else
addrok = (strcmp(*connectaddr, localaddr) == 0);
return addrok;
}
static void api()
{
const char *addr = opt_api_allow;
unsigned short port = (unsigned short) opt_api_listen; // 4048
char buf[MYBUFSIZ];
int c, n, bound;
char *connectaddr;
char *binderror;
char group;
time_t bindstart;
struct sockaddr_in serv;
struct sockaddr_in cli;
socklen_t clisiz;
bool addrok = false;
long long counter;
char *result;
char *params;
int i;
SOCKETTYPE *apisock;
if (!opt_api_listen && opt_debug) {
applog(LOG_DEBUG, "API disabled");
return;
}
if (opt_api_allow) {
setup_ipaccess();
if (ips == 0) {
applog(LOG_WARNING, "API not running (no valid IPs specified)%s", UNAVAILABLE);
}
}
apisock = (SOCKETTYPE*) calloc(1, sizeof(*apisock));
*apisock = INVSOCK;
sleep(1);
*apisock = socket(AF_INET, SOCK_STREAM, 0);
if (*apisock == INVSOCK) {
applog(LOG_ERR, "API initialisation failed (%s)%s", strerror(errno), UNAVAILABLE);
return;
}
memset(&serv, 0, sizeof(serv));
serv.sin_family = AF_INET;
serv.sin_addr.s_addr = inet_addr(addr);
if (serv.sin_addr.s_addr == (in_addr_t)INVINETADDR) {
applog(LOG_ERR, "API initialisation 2 failed (%s)%s", strerror(errno), UNAVAILABLE);
return;
}
serv.sin_port = htons(port);
#ifndef WIN32
// On linux with SO_REUSEADDR, bind will get the port if the previous
// socket is closed (even if it is still in TIME_WAIT) but fail if
// another program has it open - which is what we want
int optval = 1;
// If it doesn't work, we don't really care - just show a debug message
if (SOCKETFAIL(setsockopt(*apisock, SOL_SOCKET, SO_REUSEADDR, (void *)(&optval), sizeof(optval))))
applog(LOG_DEBUG, "API setsockopt SO_REUSEADDR failed (ignored): %s", SOCKERRMSG);
#else
// On windows a 2nd program can bind to a port>1024 already in use unless
// SO_EXCLUSIVEADDRUSE is used - however then the bind to a closed port
// in TIME_WAIT will fail until the timeout - so we leave the options alone
#endif
// try for 1 minute ... in case the old one hasn't completely gone yet
bound = 0;
bindstart = time(NULL);
while (bound == 0) {
if (bind(*apisock, (struct sockaddr *)(&serv), sizeof(serv)) < 0) {
binderror = strerror(errno);
if ((time(NULL) - bindstart) > 61)
break;
else {
if (!opt_quiet || opt_debug)
applog(LOG_WARNING, "API bind to port %d failed - trying again in 20sec", port);
sleep(20);
}
}
else
bound = 1;
}
if (bound == 0) {
applog(LOG_WARNING, "API bind to port %d failed (%s)%s", port, binderror, UNAVAILABLE);
free(apisock);
return;
}
if (SOCKETFAIL(listen(*apisock, QUEUE))) {
applog(LOG_ERR, "API initialisation 3 failed (%s)%s", strerror(errno), UNAVAILABLE);
CLOSESOCKET(*apisock);
free(apisock);
return;
}
buffer = (char *) calloc(1, MYBUFSIZ + 1);
counter = 0;
while (bye == 0) {
counter++;
clisiz = sizeof(cli);
if (SOCKETFAIL(c = accept((SOCKETTYPE)*apisock, (struct sockaddr *)(&cli), &clisiz))) {
applog(LOG_ERR, "API failed (%s)%s", strerror(errno), UNAVAILABLE);
CLOSESOCKET(*apisock);
free(apisock);
free(buffer);
return;
}
addrok = check_connect(&cli, &connectaddr, &group);
if (opt_debug && opt_protocol)
applog(LOG_DEBUG, "API: connection from %s - %s",
connectaddr, addrok ? "Accepted" : "Ignored");
if (addrok) {
bool fail;
char *wskey = NULL;
n = recv(c, &buf[0], SOCK_REC_BUFSZ, 0);
fail = SOCKETFAIL(n);
if (fail)
buf[0] = '\0';
else if (n > 0 && buf[n-1] == '\n') {
/* telnet compat \r\n */
buf[n-1] = '\0'; n--;
if (n > 0 && buf[n-1] == '\r')
buf[n-1] = '\0';
}
if (n >= 0)
buf[n] = '\0';
//if (opt_debug && opt_protocol && n > 0)
// applog(LOG_DEBUG, "API: recv command: (%d) '%s'+char(%x)", n, buf, buf[n-1]);
if (!fail) {
char *msg = NULL;
/* Websocket requests compat. */
if ((msg = strstr(buf, "GET /")) && strlen(msg) > 5) {
char cmd[256] = { 0 };
sscanf(&msg[5], "%s\n", cmd);
params = strchr(cmd, '/');
if (params)
*(params++) = '|';
params = strchr(cmd, '/');
if (params)
*(params++) = '\0';
wskey = strstr(msg, "Sec-WebSocket-Key");
if (wskey) {
char *eol = strchr(wskey, '\r');
if (eol) *eol = '\0';
wskey = strchr(wskey, ':');
wskey++;
while ((*wskey) == ' ') wskey++; // ltrim
}
n = sprintf(buf, "%s", cmd);
}
params = strchr(buf, '|');
if (params != NULL)
*(params++) = '\0';
if (opt_debug && opt_protocol && n > 0)
applog(LOG_DEBUG, "API: exec command %s(%s)", buf, params);
for (i = 0; i < CMDMAX; i++) {
if (strcmp(buf, cmds[i].name) == 0) {
if (params && strlen(params)) {
// remove possible trailing |
if (params[strlen(params) - 1] == '|')
params[strlen(params) - 1] = '\0';
}
result = (cmds[i].func)(params);
if (wskey) {
websocket_handshake(c, result, wskey);
break;
}
send_result(c, result);
break;
}
}
CLOSESOCKET(c);
}
}
}
CLOSESOCKET(*apisock);
free(apisock);
free(buffer);
}
/* external access */
void *api_thread(void *userdata)
{
struct thr_info *mythr = (struct thr_info*)userdata;
startup = time(NULL);
api();
tq_freeze(mythr->q);
if (bye) {
// quit command
proper_exit(1);
}
return NULL;
}