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added 1st modes

/*************************************************************************
 * (C) 2010 AITNET - Sofia/Bulgaria - <office@aitbg.com>
 *  by Michael Pounov <misho@aitbg.com>
 *
 * $Author: misho $
 * $Id: athctl.c,v 1.1.2.2 2010/10/23 01:50:49 misho Exp $
 *
 *************************************************************************/
#include "global.h"
#include "athctl.h"


int Verbose;
extern char compiled[], compiledby[], compilehost[];


static void
Usage()
{
	printf(	"athCtl is tool for Atheros WiFi cards managment \n"
		"=== %s === %s@%s ===\n\n"
		"  Syntax: athctl [options] [exec_file]\n\n"
		"\t-v\t\tVerbose ...\n"
		"\t-t\t\tGet current Atheros maximum range in meters\n"
		"\t-i <iface_no>\tApply to this Atheros interface number (like ath0 == 0)\n"
		"\t-d <distance>\tMode distance, meters to target\n"
		"\t-c <timeout>\tMode distance, mS timeouts correction\n"
		"\n", compiled, compiledby, compilehost);
}

static int
calcDistance(int ifid, int dist, int cor)
{
	int slottime[2], timeout[2];
	size_t len;
	char szStr[STRSIZ];

	slottime[0] = 9 + (dist / 300) + (dist % 300 ? 1 : 0);
	timeout[0] = slottime[0] * 2 + 3 + cor;
	VERB(3) printf("Info:: slottime=%d timeout=%d\n", slottime[0], timeout[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_SLOTTIME, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &slottime[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &slottime[0], sizeof slottime[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, slottime[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set slottime(%d) from %d to %d ... OK!\n", len, 
				slottime[1], slottime[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_ACKTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &timeout[0], sizeof timeout[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, timeout[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set acktimeout(%d) from %d to %d ... OK!\n", len, 
				timeout[1], timeout[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_CTSTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &timeout[0], sizeof timeout[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, timeout[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set ctstimeout(%d) from %d to %d ... OK!\n", len, 
				timeout[1], timeout[0]);

	return timeout[0];
}


static int
calcTimeout(int ifid, int cor)
{
	int slottime[2], timeout[2];
	size_t len;
	char szStr[STRSIZ];

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_SLOTTIME, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &slottime[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: get slottime(%d) %d ... OK!\n", len, slottime[1]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_ACKTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: get acktimeout(%d) %d ... OK!\n", len, timeout[1]);

	slottime[0] = (timeout[1] - 3 - cor) / 2;
	VERB(3) printf("Info:: calculated slottime=%d\n", slottime[0]);
	timeout[0] = (slottime[0] - 10) * 300;
	VERB(3) printf("Info:: calculated timeout=%d\n", timeout[0]);

	return timeout[0];
}
// ----------------------------------------------------

int
main(int argc, char **argv)
{
	char ch, mode = 0;
	int ret = 0, dist = 0, cor = 0, ino = 0;

	while ((ch = getopt(argc, argv, "hvti:d:c:")) != -1)
		switch (ch) {
			case 'v':
				Verbose++;
				break;
			case 't':
				mode |= 2;
				break;
			case 'i':
				ino = strtol(optarg, NULL, 0);
				if (ino < 0) {
					printf("Error:: in interface number %d\n", ino);
					return 1;
				}
				break;
			case 'd':
				mode |= 1;
				dist = strtol(optarg, NULL, 0);
				if (dist < 1) {
					printf("Error:: in distance meters %d\n", dist);
					return 1;
				}
				break;
			case 'c':
				mode |= 1;
				cor = strtol(optarg, NULL, 0);
				break;
			case 'h':
			default:
				Usage();
				return 1;
		}
	argc -= optind;
	argv += optind;
	if (!mode) {
		printf("Error:: not selected mode for operation ...\n");
		return 1;
	}

	if (mode & 1)
		if ((ret = calcDistance(ino, dist, cor)) < 1)
			return 2;
	if (mode & 2) {
		if ((ret = calcTimeout(ino, cor)) < 1)
			return 2;
		else {
			VERB(1)
				printf("Maximum approximate distance ~%d meters\n", ret);
			else
				printf("~%d\n", ret);
		}
	}

	return 0;
}