thodg/cgminer/api.c

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• Hash : 845961af
  Author :
  Date : 2012-01-05T19:26:01
  

  Refactor to abstract device-specific code

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• api.c

• /*
   * Copyright 2011 Andrew Smith
   * Copyright 2011 Con Kolivas
   *
   * 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 "config.h"
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <stdbool.h>
  #include <stdint.h>
  #include <unistd.h>
  #include <sys/types.h>
  
  #include "compat.h"
  #include "miner.h"
  
  #if defined(unix)
  	#include <errno.h>
  	#include <sys/socket.h>
  	#include <netinet/in.h>
  	#include <arpa/inet.h>
  
  	#define SOCKETTYPE int
  	#define SOCKETFAIL(a) ((a) < 0)
  	#define INVSOCK -1
  	#define INVINETADDR -1
  	#define CLOSESOCKET close
  
  	#define SOCKERRMSG strerror(errno)
  #endif
  
  #ifdef WIN32
  	#include <winsock2.h>
  
  	#define SOCKETTYPE SOCKET
  	#define SOCKETFAIL(a) ((a) == SOCKET_ERROR)
  	#define INVSOCK INVALID_SOCKET
  	#define INVINETADDR INADDR_NONE
  	#define CLOSESOCKET closesocket
  
  	static char WSAbuf[1024];
  
  	struct WSAERRORS {
  		int id;
  		char *code;
  	} WSAErrors[] = {
  		{ 0,			"No error" },
  		{ WSAEINTR,		"Interrupted system call" },
  		{ WSAEBADF,		"Bad file number" },
  		{ WSAEACCES,		"Permission denied" },
  		{ WSAEFAULT,		"Bad address" },
  		{ WSAEINVAL,		"Invalid argument" },
  		{ WSAEMFILE,		"Too many open sockets" },
  		{ WSAEWOULDBLOCK,	"Operation would block" },
  		{ WSAEINPROGRESS,	"Operation now in progress" },
  		{ WSAEALREADY,		"Operation already in progress" },
  		{ WSAENOTSOCK,		"Socket operation on non-socket" },
  		{ WSAEDESTADDRREQ,	"Destination address required" },
  		{ WSAEMSGSIZE,		"Message too long" },
  		{ WSAEPROTOTYPE,	"Protocol wrong type for socket" },
  		{ WSAENOPROTOOPT,	"Bad protocol option" },
  		{ WSAEPROTONOSUPPORT,	"Protocol not supported" },
  		{ WSAESOCKTNOSUPPORT,	"Socket type not supported" },
  		{ WSAEOPNOTSUPP,	"Operation not supported on socket" },
  		{ WSAEPFNOSUPPORT,	"Protocol family not supported" },
  		{ WSAEAFNOSUPPORT,	"Address family not supported" },
  		{ WSAEADDRINUSE,	"Address already in use" },
  		{ WSAEADDRNOTAVAIL,	"Can't assign requested address" },
  		{ WSAENETDOWN,		"Network is down" },
  		{ WSAENETUNREACH,	"Network is unreachable" },
  		{ WSAENETRESET,		"Net connection reset" },
  		{ WSAECONNABORTED,	"Software caused connection abort" },
  		{ WSAECONNRESET,	"Connection reset by peer" },
  		{ WSAENOBUFS,		"No buffer space available" },
  		{ WSAEISCONN,		"Socket is already connected" },
  		{ WSAENOTCONN,		"Socket is not connected" },
  		{ WSAESHUTDOWN,		"Can't send after socket shutdown" },
  		{ WSAETOOMANYREFS,	"Too many references, can't splice" },
  		{ WSAETIMEDOUT,		"Connection timed out" },
  		{ WSAECONNREFUSED,	"Connection refused" },
  		{ WSAELOOP,		"Too many levels of symbolic links" },
  		{ WSAENAMETOOLONG,	"File name too long" },
  		{ WSAEHOSTDOWN,		"Host is down" },
  		{ WSAEHOSTUNREACH,	"No route to host" },
  		{ WSAENOTEMPTY,		"Directory not empty" },
  		{ WSAEPROCLIM,		"Too many processes" },
  		{ WSAEUSERS,		"Too many users" },
  		{ WSAEDQUOT,		"Disc quota exceeded" },
  		{ WSAESTALE,		"Stale NFS file handle" },
  		{ WSAEREMOTE,		"Too many levels of remote in path" },
  		{ WSASYSNOTREADY,	"Network system is unavailable" },
  		{ WSAVERNOTSUPPORTED,	"Winsock version out of range" },
  		{ WSANOTINITIALISED,	"WSAStartup not yet called" },
  		{ WSAEDISCON,		"Graceful shutdown in progress" },
  		{ WSAHOST_NOT_FOUND,	"Host not found" },
  		{ WSANO_DATA,		"No host data of that type was found" },
  		{ -1,			"Unknown error code" }
  	};
  
  	static char *WSAErrorMsg()
  	{
  		char *msg;
  		int i;
  		int id = WSAGetLastError();
  
  		/* Assume none of them are actually -1 */
  		for (i = 0; WSAErrors[i].id != -1; i++)
  			if (WSAErrors[i].id == id)
  				break;
  
  		sprintf(WSAbuf, "Socket Error: (%d) %s", id, WSAErrors[i].code);
  
  		return &(WSAbuf[0]);
  	}
  
  	#define SOCKERRMSG WSAErrorMsg()
  
  	#ifndef SHUT_RDWR
  	#define SHUT_RDWR SD_BOTH
  	#endif
  #endif
  
  // Big enough for largest API request
  //  though a PC with 100s of CPUs may exceed the size ...
  // Current code assumes it can socket send this size also
  #define MYBUFSIZ	32768
  
  // Number of requests to queue - normally would be small
  #define QUEUE	10
  
  static char *io_buffer = NULL;
  static char *msg_buffer = NULL;
  static SOCKETTYPE sock = INVSOCK;
  
  static const char *UNAVAILABLE = " - API will not be available";
  
  //static const char *BLANK = "";
  static const char *COMMA = ",";
  static const char SEPARATOR = '|';
  
  #define _DEVS		"DEVS"
  #define _POOLS		"POOLS"
  #define _SUMMARY	"SUMMARY"
  #define _STATUS		"STATUS"
  #define _VERSION	"VERSION"
  #define _CPU		"CPU"
  #define _GPU		"GPU"
  #define _CPUS		"CPUS"
  #define _GPUS		"GPUS"
  #define _BYE		"BYE"
  
  static const char ISJSON = '{';
  #define JSON0		"{"
  #define JSON1		"\""
  #define JSON2		"\":["
  #define JSON3		"]"
  #define JSON4		",\"id\":1}"
  
  #define JSON_START	JSON0
  #define JSON_DEVS	JSON1 _DEVS JSON2
  #define JSON_POOLS	JSON1 _POOLS JSON2
  #define JSON_SUMMARY	JSON1 _SUMMARY JSON2
  #define JSON_STATUS	JSON1 _STATUS JSON2
  #define JSON_VERSION	JSON1 _VERSION JSON2
  #define JSON_GPU	JSON1 _GPU JSON2
  #define JSON_CPU	JSON1 _CPU JSON2
  #define JSON_GPUS	JSON1 _GPUS JSON2
  #define JSON_CPUS	JSON1 _CPUS JSON2
  #define JSON_BYE	JSON1 _BYE JSON1
  #define JSON_CLOSE	JSON3
  #define JSON_END	JSON4
  
  static const char *JSON_COMMAND = "command";
  static const char *JSON_PARAMETER = "parameter";
  
  #define MSG_INVGPU 1
  #define MSG_ALRENA 2
  #define MSG_ALRDIS 3
  #define MSG_GPUMRE 4
  #define MSG_GPUREN 5
  #define MSG_GPUNON 6
  #define MSG_POOL 7
  #define MSG_NOPOOL 8
  #define MSG_DEVS 9
  #define MSG_NODEVS 10
  #define MSG_SUMM 11
  #define MSG_GPUDIS 12
  #define MSG_GPUREI 13
  #define MSG_INVCMD 14
  #define MSG_MISID 15
  #define MSG_CPUNON 16
  #define MSG_GPUDEV 17
  #define MSG_CPUDEV 18
  #define MSG_INVCPU 19
  #define MSG_NUMGPU 20
  #define MSG_NUMCPU 21
  #define MSG_VERSION 22
  #define MSG_INVJSON 23
  #define MSG_MISSCMD 24
  
  enum code_severity {
  	SEVERITY_ERR,
  	SEVERITY_WARN,
  	SEVERITY_INFO,
  	SEVERITY_SUCC,
  	SEVERITY_FAIL
  };
  
  enum code_parameters {
  	PARAM_GPU,
  	PARAM_CPU,
  	PARAM_GPUMAX,
  	PARAM_CPUMAX,
  	PARAM_PMAX,
  	PARAM_GCMAX,
  	PARAM_CMD,
  	PARAM_NONE
  };
  
  struct CODES {
  	const enum code_severity severity;
  	const int code;
  	const enum code_parameters params;
  	const char *description;
  } codes[] = {
   { SEVERITY_ERR,   MSG_INVGPU,	PARAM_GPUMAX,	"Invalid GPU id %d - range is 0 - %d" },
   { SEVERITY_INFO,  MSG_ALRENA,	PARAM_GPU,	"GPU %d already enabled" },
   { SEVERITY_INFO,  MSG_ALRDIS,	PARAM_GPU,	"GPU %d already disabled" },
   { SEVERITY_WARN,  MSG_GPUMRE,	PARAM_GPU,	"GPU %d must be restarted first" },
   { SEVERITY_INFO,  MSG_GPUREN,	PARAM_GPU,	"GPU %d sent enable message" },
   { SEVERITY_ERR,   MSG_GPUNON,	PARAM_NONE,	"No GPUs" },
   { SEVERITY_SUCC,  MSG_POOL,	PARAM_PMAX,	"%d Pool(s)" },
   { SEVERITY_ERR,   MSG_NOPOOL,	PARAM_NONE,	"No pools" },
   { SEVERITY_SUCC,  MSG_DEVS,	PARAM_GCMAX,	"%d GPU(s) - %d CPU(s)" },
   { SEVERITY_ERR,   MSG_NODEVS,	PARAM_NONE,	"No GPUs/CPUs" },
   { SEVERITY_SUCC,  MSG_SUMM,	PARAM_NONE,	"Summary" },
   { SEVERITY_INFO,  MSG_GPUDIS,	PARAM_GPU,	"GPU %d set disable flag" },
   { SEVERITY_INFO,  MSG_GPUREI,	PARAM_GPU,	"GPU %d restart attempted" },
   { SEVERITY_ERR,   MSG_INVCMD,	PARAM_NONE,	"Invalid command" },
   { SEVERITY_ERR,   MSG_MISID,	PARAM_NONE,	"Missing device id parameter" },
   { SEVERITY_ERR,   MSG_CPUNON,	PARAM_NONE,	"No CPUs" },
   { SEVERITY_SUCC,  MSG_GPUDEV,	PARAM_GPU,	"GPU%d" },
   { SEVERITY_SUCC,  MSG_CPUDEV,	PARAM_CPU,	"CPU%d" },
   { SEVERITY_ERR,   MSG_INVCPU,	PARAM_CPUMAX,	"Invalid CPU id %d - range is 0 - %d" },
   { SEVERITY_SUCC,  MSG_NUMGPU,	PARAM_NONE,	"GPU count" },
   { SEVERITY_SUCC,  MSG_NUMCPU,	PARAM_NONE,	"CPU count" },
   { SEVERITY_SUCC,  MSG_VERSION,	PARAM_CPU,	"CGMiner versions" },
   { SEVERITY_ERR,   MSG_INVJSON,	PARAM_NONE,	"Invalid JSON" },
   { SEVERITY_ERR,   MSG_MISSCMD,	PARAM_CMD,	"Missing JSON '%s'" },
   { SEVERITY_FAIL }
  };
  
  static const char *APIVERSION = "0.7";
  static const char *DEAD = "Dead";
  static const char *SICK = "Sick";
  static const char *NOSTART = "NoStart";
  static const char *DISABLED = "Disabled";
  static const char *ALIVE = "Alive";
  static const char *DYNAMIC = "D";
  
  static const char *YES = "Y";
  static const char *NO = "N";
  
  static int bye = 0;
  static bool ping = true;
  
  // All replies (except BYE) start with a message
  //  thus for JSON, message() inserts JSON_START at the front
  //  and send_result() adds JSON_END at the end
  static char *message(int messageid, int gpuid, bool isjson)
  {
  	char severity;
  	char *ptr;
  	int cpu;
  	int i;
  
  	for (i = 0; codes[i].severity != SEVERITY_FAIL; i++) {
  		if (codes[i].code == messageid) {
  			switch (codes[i].severity) {
  			case SEVERITY_WARN:
  				severity = 'W';
  				break;
  			case SEVERITY_INFO:
  				severity = 'I';
  				break;
  			case SEVERITY_SUCC:
  				severity = 'S';
  				break;
  			case SEVERITY_ERR:
  			default:
  				severity = 'E';
  				break;
  			}
  
  			if (isjson)
  				sprintf(msg_buffer, JSON_START JSON_STATUS "{\"" _STATUS "\":\"%c\",\"Code\":%d,\"Msg\":\"", severity, messageid);
  			else
  				sprintf(msg_buffer, _STATUS "=%c,Code=%d,Msg=", severity, messageid);
  
  			ptr = msg_buffer + strlen(msg_buffer);
  
  			switch(codes[i].params) {
  			case PARAM_GPU:
  				sprintf(ptr, codes[i].description, gpuid);
  				break;
  			case PARAM_CPU:
  				sprintf(ptr, codes[i].description, gpuid);
  				break;
  			case PARAM_GPUMAX:
  				sprintf(ptr, codes[i].description, gpuid, nDevs - 1);
  				break;
  			case PARAM_PMAX:
  				sprintf(ptr, codes[i].description, total_pools);
  				break;
  			case PARAM_GCMAX:
  				if (opt_n_threads > 0)
  					cpu = num_processors;
  				else
  					cpu = 0;
  
  				sprintf(ptr, codes[i].description, nDevs, cpu);
  				break;
  			case PARAM_CMD:
  				sprintf(ptr, codes[i].description, JSON_COMMAND);
  				break;
  			case PARAM_NONE:
  			default:
  				strcpy(ptr, codes[i].description);
  			}
  
  			ptr = msg_buffer + strlen(msg_buffer);
  
  			if (isjson)
  				sprintf(ptr, "\",\"Description\":\"%s\"}" JSON_CLOSE, opt_api_description);
  			else
  				sprintf(ptr, ",Description=%s%c", opt_api_description, SEPARATOR);
  
  			return msg_buffer;
  		}
  	}
  
  	if (isjson)
  		sprintf(msg_buffer, JSON_START JSON_STATUS "{\"" _STATUS "\":\"F\",\"Code\":-1,\"Msg\":\"%d\",\"Description\":\"%s\"}" JSON_CLOSE,
  			messageid, opt_api_description);
  	else
  		sprintf(msg_buffer, _STATUS "=F,Code=-1,Msg=%d,Description=%s%c",
  			messageid, opt_api_description, SEPARATOR);
  
  	return msg_buffer;
  }
  
  void apiversion(SOCKETTYPE c, char *param, bool isjson)
  {
  	if (isjson)
  		sprintf(io_buffer, "%s," JSON_VERSION "{\"CGMiner\":\"%s\",\"API\":\"%s\"}" JSON_CLOSE,
  			message(MSG_VERSION, 0, isjson),
  			VERSION, APIVERSION);
  	else
  		sprintf(io_buffer, "%s" _VERSION ",CGMiner=%s,API=%s%c",
  			message(MSG_VERSION, 0, isjson),
  			VERSION, APIVERSION, SEPARATOR);
  }
  
  void gpustatus(int gpu, bool isjson)
  {
  	char intensity[20];
  	char buf[BUFSIZ];
  	char *enabled;
  	char *status;
  	float gt, gv;
  	int ga, gf, gp, gc, gm, pt;
  
  	if (gpu >= 0 && gpu < nDevs) {
  		struct cgpu_info *cgpu = &gpus[gpu];
  
  		cgpu->utility = cgpu->accepted / ( total_secs ? total_secs : 1 ) * 60;
  
  #ifdef HAVE_ADL
  		if (!gpu_stats(gpu, &gt, &gc, &gm, &gv, &ga, &gf, &gp, &pt))
  #endif
  			gt = gv = gm = gc = ga = gf = gp = pt = 0;
  
  		if (cgpu->enabled)
  			enabled = (char *)YES;
  		else
  			enabled = (char *)NO;
  
  		if (cgpu->status == LIFE_DEAD)
  			status = (char *)DEAD;
  		else if (cgpu->status == LIFE_SICK)
  			status = (char *)SICK;
  		else if (cgpu->status == LIFE_NOSTART)
  			status = (char *)NOSTART;
  		else
  			status = (char *)ALIVE;
  
  		if (cgpu->dynamic)
  			strcpy(intensity, DYNAMIC);
  		else
  			sprintf(intensity, "%d", gpus->intensity);
  
  		if (isjson)
  			sprintf(buf, "{\"GPU\":%d,\"Enabled\":\"%s\",\"Status\":\"%s\",\"Temperature\":%.2f,\"Fan Speed\":%d,\"Fan Percent\":%d,\"GPU Clock\":%d,\"Memory Clock\":%d,\"GPU Voltage\":%.3f,\"GPU Activity\":%d,\"Powertune\":%d,\"MHS av\":%.2f,\"MHS %ds\":%.2f,\"Accepted\":%d,\"Rejected\":%d,\"Hardware Errors\":%d,\"Utility\":%.2f,\"Intensity\":\"%s\"}",
  				gpu, enabled, status, gt, gf, gp, gc, gm, gv, ga, pt,
  				cgpu->total_mhashes / total_secs, opt_log_interval, cgpu->rolling,
  				cgpu->accepted, cgpu->rejected, cgpu->hw_errors,
  				cgpu->utility, intensity);
  		else
  			sprintf(buf, "GPU=%d,Enabled=%s,Status=%s,Temperature=%.2f,Fan Speed=%d,Fan Percent=%d,GPU Clock=%d,Memory Clock=%d,GPU Voltage=%.3f,GPU Activity=%d,Powertune=%d,MHS av=%.2f,MHS %ds=%.2f,Accepted=%d,Rejected=%d,Hardware Errors=%d,Utility=%.2f,Intensity=%s%c",
  				gpu, enabled, status, gt, gf, gp, gc, gm, gv, ga, pt,
  				cgpu->total_mhashes / total_secs, opt_log_interval, cgpu->rolling,
  				cgpu->accepted, cgpu->rejected, cgpu->hw_errors,
  				cgpu->utility, intensity, SEPARATOR);
  
  		strcat(io_buffer, buf);
  	}
  }
  
  void cpustatus(int cpu, bool isjson)
  {
  	char buf[BUFSIZ];
  
  	if (opt_n_threads > 0 && cpu >= 0 && cpu < num_processors) {
  		struct cgpu_info *cgpu = &cpus[cpu];
  
  		cgpu->utility = cgpu->accepted / ( total_secs ? total_secs : 1 ) * 60;
  
  		if (isjson)
  			sprintf(buf, "{\"CPU\":%d,\"MHS av\":%.2f,\"MHS %ds\":%.2f,\"Accepted\":%d,\"Rejected\":%d,\"Utility\":%.2f}",
  				cpu, cgpu->total_mhashes / total_secs,
  				opt_log_interval, cgpu->rolling,
  				cgpu->accepted, cgpu->rejected,
  				cgpu->utility);
  		else
  			sprintf(buf, "CPU=%d,MHS av=%.2f,MHS %ds=%.2f,Accepted=%d,Rejected=%d,Utility=%.2f%c",
  				cpu, cgpu->total_mhashes / total_secs,
  				opt_log_interval, cgpu->rolling,
  				cgpu->accepted, cgpu->rejected,
  				cgpu->utility, SEPARATOR);
  
  		strcat(io_buffer, buf);
  	}
  }
  
  void devstatus(SOCKETTYPE c, char *param, bool isjson)
  {
  	int i;
  
  	if (nDevs == 0 && opt_n_threads == 0) {
  		strcpy(io_buffer, message(MSG_NODEVS, 0, isjson));
  		return;
  	}
  
  	strcpy(io_buffer, message(MSG_DEVS, 0, isjson));
  
  	if (isjson) {
  		strcat(io_buffer, COMMA);
  		strcat(io_buffer, JSON_DEVS);
  	}
  
  	for (i = 0; i < nDevs; i++) {
  		if (isjson && i > 0)
  			strcat(io_buffer, COMMA);
  
  		gpustatus(i, isjson);
  	}
  
  	if (opt_n_threads > 0)
  		for (i = 0; i < num_processors; i++) {
  			if (isjson && (i > 0 || nDevs > 0))
  				strcat(io_buffer, COMMA);
  
  			cpustatus(i, isjson);
  		}
  
  	if (isjson)
  		strcat(io_buffer, JSON_CLOSE);
  }
  
  void gpudev(SOCKETTYPE c, char *param, bool isjson)
  {
  	int id;
  
  	if (nDevs == 0) {
  		strcpy(io_buffer, message(MSG_GPUNON, 0, isjson));
  		return;
  	}
  
  	if (param == NULL || *param == '\0') {
  		strcpy(io_buffer, message(MSG_MISID, 0, isjson));
  		return;
  	}
  
  	id = atoi(param);
  	if (id < 0 || id >= nDevs) {
  		strcpy(io_buffer, message(MSG_INVGPU, id, isjson));
  		return;
  	}
  
  	strcpy(io_buffer, message(MSG_GPUDEV, id, isjson));
  
  	if (isjson) {
  		strcat(io_buffer, COMMA);
  		strcat(io_buffer, JSON_GPU);
  	}
  
  	gpustatus(id, isjson);
  
  	if (isjson)
  		strcat(io_buffer, JSON_CLOSE);
  }
  
  void cpudev(SOCKETTYPE c, char *param, bool isjson)
  {
  	int id;
  
  	if (opt_n_threads == 0) {
  		strcpy(io_buffer, message(MSG_CPUNON, 0, isjson));
  		return;
  	}
  
  	if (param == NULL || *param == '\0') {
  		strcpy(io_buffer, message(MSG_MISID, 0, isjson));
  		return;
  	}
  
  	id = atoi(param);
  	if (id < 0 || id >= num_processors) {
  		strcpy(io_buffer, message(MSG_INVCPU, id, isjson));
  		return;
  	}
  
  	strcpy(io_buffer, message(MSG_CPUDEV, id, isjson));
  
  	if (isjson) {
  		strcat(io_buffer, COMMA);
  		strcat(io_buffer, JSON_CPU);
  	}
  
  	cpustatus(id, isjson);
  
  	if (isjson)
  		strcat(io_buffer, JSON_CLOSE);
  }
  
  void poolstatus(SOCKETTYPE c, char *param, bool isjson)
  {
  	char buf[BUFSIZ];
  	char *status, *lp;
  	int i;
  
  	if (total_pools == 0) {
  		strcpy(io_buffer, message(MSG_NOPOOL, 0, isjson));
  		return;
  	}
  
  	strcpy(io_buffer, message(MSG_POOL, 0, isjson));
  
  	if (isjson) {
  		strcat(io_buffer, COMMA);
  		strcat(io_buffer, JSON_POOLS);
  	}
  
  	for (i = 0; i < total_pools; i++) {
  		struct pool *pool = pools[i];
  
  		if (!pool->enabled)
  			status = (char *)DISABLED;
  		else {
  			if (pool->idle)
  				status = (char *)DEAD;
  			else
  				status = (char *)ALIVE;
  		}
  
  		if (pool->hdr_path)
  			lp = (char *)YES;
  		else
  			lp = (char *)NO;
  
  		if (isjson)
  			sprintf(buf, "%s{\"POOL\":%d,\"URL\":\"%s\",\"Status\":\"%s\",\"Priority\":%d,\"Long Poll\":\"%s\",\"Getworks\":%d,\"Accepted\":%d,\"Rejected\":%d,\"Discarded\":%d,\"Stale\":%d,\"Get Failures\":%d,\"Remote Failures\":%d}",
  				(i > 0) ? COMMA : "",
  				i, pool->rpc_url, status, pool->prio, lp,
  				pool->getwork_requested,
  				pool->accepted, pool->rejected,
  				pool->discarded_work,
  				pool->stale_shares,
  				pool->getfail_occasions,
  				pool->remotefail_occasions);
  		else
  			sprintf(buf, "POOL=%d,URL=%s,Status=%s,Priority=%d,Long Poll=%s,Getworks=%d,Accepted=%d,Rejected=%d,Discarded=%d,Stale=%d,Get Failures=%d,Remote Failures=%d%c",
  				i, pool->rpc_url, status, pool->prio, lp,
  				pool->getwork_requested,
  				pool->accepted, pool->rejected,
  				pool->discarded_work,
  				pool->stale_shares,
  				pool->getfail_occasions,
  				pool->remotefail_occasions, SEPARATOR);
  
  		strcat(io_buffer, buf);
  	}
  
  	if (isjson)
  		strcat(io_buffer, JSON_CLOSE);
  }
  
  void summary(SOCKETTYPE c, char *param, bool isjson)
  {
  	double utility, mhs;
  
  	char *algo = (char *)(algo_names[opt_algo]);
  	if (algo == NULL)
  		algo = "(null)";
  
  	utility = total_accepted / ( total_secs ? total_secs : 1 ) * 60;
  	mhs = total_mhashes_done / total_secs;
  
  	if (isjson)
  		sprintf(io_buffer, "%s," JSON_SUMMARY "{\"Elapsed\":%.0f,\"Algorithm\":\"%s\",\"MHS av\":%.2f,\"Found Blocks\":%d,\"Getworks\":%d,\"Accepted\":%d,\"Rejected\":%d,\"Hardware Errors\":%d,\"Utility\":%.2f,\"Discarded\":%d,\"Stale\":%d,\"Get Failures\":%d,\"Local Work\":%u,\"Remote Failures\":%u,\"Network Blocks\":%u}" JSON_CLOSE,
  			message(MSG_SUMM, 0, isjson),
  			total_secs, algo, mhs, found_blocks,
  			total_getworks, total_accepted, total_rejected,
  			hw_errors, utility, total_discarded, total_stale,
  			total_go, local_work, total_ro, new_blocks);
  	else
  		sprintf(io_buffer, "%s" _SUMMARY ",Elapsed=%.0f,Algorithm=%s,MHS av=%.2f,Found Blocks=%d,Getworks=%d,Accepted=%d,Rejected=%d,Hardware Errors=%d,Utility=%.2f,Discarded=%d,Stale=%d,Get Failures=%d,Local Work=%u,Remote Failures=%u,Network Blocks=%u%c",
  			message(MSG_SUMM, 0, isjson),
  			total_secs, algo, mhs, found_blocks,
  			total_getworks, total_accepted, total_rejected,
  			hw_errors, utility, total_discarded, total_stale,
  			total_go, local_work, total_ro, new_blocks, SEPARATOR);
  }
  
  void gpuenable(SOCKETTYPE c, char *param, bool isjson)
  {
  	struct thr_info *thr;
  	int gpu;
  	int id;
  	int i;
  
  	if (gpu_threads == 0) {
  		strcpy(io_buffer, message(MSG_GPUNON, 0, isjson));
  		return;
  	}
  
  	if (param == NULL || *param == '\0') {
  		strcpy(io_buffer, message(MSG_MISID, 0, isjson));
  		return;
  	}
  
  	id = atoi(param);
  	if (id < 0 || id >= nDevs) {
  		strcpy(io_buffer, message(MSG_INVGPU, id, isjson));
  		return;
  	}
  
  	if (gpus[id].enabled) {
  		strcpy(io_buffer, message(MSG_ALRENA, id, isjson));
  		return;
  	}
  
  	for (i = 0; i < gpu_threads; i++) {
  		gpu = thr_info[i].cgpu->device_id;
  		if (gpu == id) {
  			thr = &thr_info[i];
  			if (thr->cgpu->status != LIFE_WELL) {
  				strcpy(io_buffer, message(MSG_GPUMRE, id, isjson));
  				return;
  			}
  
  			gpus[id].enabled = true;
  			tq_push(thr->q, &ping);
  
  		}
  	}
  
  	strcpy(io_buffer, message(MSG_GPUREN, id, isjson));
  }
  
  void gpudisable(SOCKETTYPE c, char *param, bool isjson)
  {
  	int id;
  
  	if (nDevs == 0) {
  		strcpy(io_buffer, message(MSG_GPUNON, 0, isjson));
  		return;
  	}
  
  	if (param == NULL || *param == '\0') {
  		strcpy(io_buffer, message(MSG_MISID, 0, isjson));
  		return;
  	}
  
  	id = atoi(param);
  	if (id < 0 || id >= nDevs) {
  		strcpy(io_buffer, message(MSG_INVGPU, id, isjson));
  		return;
  	}
  
  	if (!gpus[id].enabled) {
  		strcpy(io_buffer, message(MSG_ALRDIS, id, isjson));
  		return;
  	}
  
  	gpus[id].enabled = false;
  
  	strcpy(io_buffer, message(MSG_GPUDIS, id, isjson));
  }
  
  void gpurestart(SOCKETTYPE c, char *param, bool isjson)
  {
  	int id;
  
  	if (nDevs == 0) {
  		strcpy(io_buffer, message(MSG_GPUNON, 0, isjson));
  		return;
  	}
  
  	if (param == NULL || *param == '\0') {
  		strcpy(io_buffer, message(MSG_MISID, 0, isjson));
  		return;
  	}
  
  	id = atoi(param);
  	if (id < 0 || id >= nDevs) {
  		strcpy(io_buffer, message(MSG_INVGPU, id, isjson));
  		return;
  	}
  
  	reinit_device(&gpus[id]);
  
  	strcpy(io_buffer, message(MSG_GPUREI, id, isjson));
  }
  
  void gpucount(SOCKETTYPE c, char *param, bool isjson)
  {
  	char buf[BUFSIZ];
  
  	strcpy(io_buffer, message(MSG_NUMGPU, 0, isjson));
  
  	if (isjson)
  		sprintf(buf, "," JSON_GPUS "{\"Count\":%d}" JSON_CLOSE, nDevs);
  	else
  		sprintf(buf, _GPUS ",Count=%d%c", nDevs, SEPARATOR);
  
  	strcat(io_buffer, buf);
  }
  
  void cpucount(SOCKETTYPE c, char *param, bool isjson)
  {
  	char buf[BUFSIZ];
  
  	strcpy(io_buffer, message(MSG_NUMCPU, 0, isjson));
  
  	if (isjson)
  		sprintf(buf, "," JSON_CPUS "{\"Count\":%d}" JSON_CLOSE, opt_n_threads > 0 ? num_processors : 0);
  	else
  		sprintf(buf, _CPUS ",Count=%d%c", opt_n_threads > 0 ? num_processors : 0, SEPARATOR);
  
  	strcat(io_buffer, buf);
  }
  
  void send_result(SOCKETTYPE c, bool isjson);
  
  void doquit(SOCKETTYPE c, char *param, bool isjson)
  {
  	if (isjson)
  		strcpy(io_buffer, JSON_START JSON_BYE);
  	else
  		strcpy(io_buffer, _BYE);
  
  	send_result(c, isjson);
  	*io_buffer = '\0';
  	bye = 1;
  	kill_work();
  }
  
  struct CMDS {
  	char *name;
  	void (*func)(SOCKETTYPE, char *, bool);
  } cmds[] = {
  	{ "version",	apiversion },
  	{ "devs",	devstatus },
  	{ "pools",	poolstatus },
  	{ "summary",	summary },
  	{ "gpuenable",	gpuenable },
  	{ "gpudisable",	gpudisable },
  	{ "gpurestart",	gpurestart },
  	{ "gpu",	gpudev },
  	{ "cpu",	cpudev },
  	{ "gpucount",	gpucount },
  	{ "cpucount",	cpucount },
  	{ "quit",	doquit },
  	{ NULL }
  };
  
  void send_result(SOCKETTYPE c, bool isjson)
  {
  	int n;
  	int len;
  
  	if (isjson)
  		strcat(io_buffer, JSON_END);
  
  	len = strlen(io_buffer);
  
  	if (opt_debug)
  		applog(LOG_DEBUG, "DBG: send reply: (%d) '%.10s%s'", len+1, io_buffer, len > 10 ? "..." : "");
  
  	// ignore failure - it's closed immediately anyway
  	n = send(c, io_buffer, len+1, 0);
  
  	if (opt_debug) {
  		if (SOCKETFAIL(n))
  			applog(LOG_DEBUG, "DBG: send failed: %s", SOCKERRMSG);
  		else
  			applog(LOG_DEBUG, "DBG: sent %d", n);
  	}
  
  }
  
  void tidyup()
  {
  	bye = 1;
  
  	if (sock != INVSOCK) {
  		shutdown(sock, SHUT_RDWR);
  		CLOSESOCKET(sock);
  		sock = INVSOCK;
  	}
  
  	if (msg_buffer != NULL) {
  		free(msg_buffer);
  		msg_buffer = NULL;
  	}
  
  	if (io_buffer != NULL) {
  		free(io_buffer);
  		io_buffer = NULL;
  	}
  }
  
  void api(void)
  {
  	char buf[BUFSIZ];
  	char param_buf[BUFSIZ];
  	const char *localaddr = "127.0.0.1";
  	SOCKETTYPE c;
  	int n, bound;
  	char *connectaddr;
  	char *binderror;
  	time_t bindstart;
  	short int port = opt_api_port;
  	struct sockaddr_in serv;
  	struct sockaddr_in cli;
  	socklen_t clisiz;
  	char *cmd;
  	char *param;
  	bool addrok;
  	json_error_t json_err;
  	json_t *json_config;
  	json_t *json_val;
  	bool isjson;
  	bool did;
  	int i;
  
  	/* This should be done first to ensure curl has already called WSAStartup() in windows */
  	sleep(opt_log_interval);
  
  	if (!opt_api_listen) {
  		applog(LOG_DEBUG, "API not running%s", UNAVAILABLE);
  		return;
  	}
  
  	sock = socket(AF_INET, SOCK_STREAM, 0);
  	if (sock == INVSOCK) {
  		applog(LOG_ERR, "API1 initialisation failed (%s)%s", SOCKERRMSG, UNAVAILABLE);
  		return;
  	}
  
  	memset(&serv, 0, sizeof(serv));
  
  	serv.sin_family = AF_INET;
  
  	if (!opt_api_network) {
  		serv.sin_addr.s_addr = inet_addr(localaddr);
  		if (serv.sin_addr.s_addr == INVINETADDR) {
  			applog(LOG_ERR, "API2 initialisation failed (%s)%s", SOCKERRMSG, UNAVAILABLE);
  			return;
  		}
  	}
  
  	serv.sin_port = htons(port);
  
  	// try for more than 1 minute ... in case the old one hasn't completely gone yet
  	bound = 0;
  	bindstart = time(NULL);
  	while (bound == 0) {
  		if (SOCKETFAIL(bind(sock, (struct sockaddr *)(&serv), sizeof(serv)))) {
  			binderror = SOCKERRMSG;
  			if ((time(NULL) - bindstart) > 61)
  				break;
  			else {
  				applog(LOG_WARNING, "API bind to port %d failed - trying again in 15sec", port);
  				sleep(15);
  			}
  		}
  		else
  			bound = 1;
  	}
  
  	if (bound == 0) {
  		applog(LOG_ERR, "API bind to port %d failed (%s)%s", port, binderror, UNAVAILABLE);
  		return;
  	}
  
  	if (SOCKETFAIL(listen(sock, QUEUE))) {
  		applog(LOG_ERR, "API3 initialisation failed (%s)%s", SOCKERRMSG, UNAVAILABLE);
  		CLOSESOCKET(sock);
  		return;
  	}
  
  	if (opt_api_network)
  		applog(LOG_WARNING, "API running in UNRESTRICTED access mode");
  	else
  		applog(LOG_WARNING, "API running in restricted access mode");
  
  	io_buffer = malloc(MYBUFSIZ+1);
  	msg_buffer = malloc(MYBUFSIZ+1);
  
  	while (bye == 0) {
  		clisiz = sizeof(cli);
  		if (SOCKETFAIL(c = accept(sock, (struct sockaddr *)(&cli), &clisiz))) {
  			applog(LOG_ERR, "API failed (%s)%s", SOCKERRMSG, UNAVAILABLE);
  			goto die;
  		}
  
  		if (opt_api_network)
  			addrok = true;
  		else {
  			connectaddr = inet_ntoa(cli.sin_addr);
  			addrok = (strcmp(connectaddr, localaddr) == 0);
  		}
  
  		if (opt_debug) {
  			connectaddr = inet_ntoa(cli.sin_addr);
  			applog(LOG_DEBUG, "DBG: connection from %s - %s", connectaddr, addrok ? "Accepted" : "Ignored");
  		}
  
  		if (addrok) {
  			n = recv(c, &buf[0], BUFSIZ-1, 0);
  			if (SOCKETFAIL(n))
  				buf[0] = '\0';
  			else
  				buf[n] = '\0';
  
  			if (opt_debug) {
  				if (SOCKETFAIL(n))
  					applog(LOG_DEBUG, "DBG: recv failed: %s", SOCKERRMSG);
  				else
  					applog(LOG_DEBUG, "DBG: recv command: (%d) '%s'", n, buf);
  			}
  
  			if (!SOCKETFAIL(n)) {
  				did = false;
  
  				if (*buf != ISJSON) {
  					isjson = false;
  
  					param = strchr(buf, SEPARATOR);
  					if (param != NULL)
  						*(param++) = '\0';
  
  					cmd = buf;
  				}
  				else {
  					isjson = true;
  
  					param = NULL;
  
  					json_config = json_loadb(buf, n, 0, &json_err);
  
  					if (!json_is_object(json_config)) {
  						strcpy(io_buffer, message(MSG_INVJSON, 0, isjson));
  						send_result(c, isjson);
  						did = true;
  					}
  					else {
  						json_val = json_object_get(json_config, JSON_COMMAND);
  						if (json_val == NULL) {
  							strcpy(io_buffer, message(MSG_MISSCMD, 0, isjson));
  							send_result(c, isjson);
  							did = true;
  						}
  						else {
  							if (!json_is_string(json_val)) {
  								strcpy(io_buffer, message(MSG_INVCMD, 0, isjson));
  								send_result(c, isjson);
  								did = true;
  							}
  							else {
  								cmd = (char *)json_string_value(json_val);
  								json_val = json_object_get(json_config, JSON_PARAMETER);
  								if (json_is_string(json_val))
  									param = (char *)json_string_value(json_val);
  								else if (json_is_integer(json_val)) {
  									sprintf(param_buf, "%d", (int)json_integer_value(json_val));
  									param = param_buf;
  								} else if (json_is_real(json_val)) {
  									sprintf(param_buf, "%f", (double)json_real_value(json_val));
  									param = param_buf;
  								}
  							}
  						}
  					}
  				}
  
  				if (!did)
  					for (i = 0; cmds[i].name != NULL; i++) {
  						if (strcmp(cmd, cmds[i].name) == 0) {
  							(cmds[i].func)(c, param, isjson);
  							send_result(c, isjson);
  							did = true;
  							break;
  						}
  					}
  
  				if (!did) {
  					strcpy(io_buffer, message(MSG_INVCMD, 0, isjson));
  					send_result(c, isjson);
  				}
  			}
  		}
  		CLOSESOCKET(c);
  	}
  die:
  	tidyup();
  }
  

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