Find file
Fetching contributors…
Cannot retrieve contributors at this time
198 lines (177 sloc) 5.7 KB
* FanControl
* Copyright (c) 2006-2012 Hendrik Holtmann
* smcWrapper.m - MacBook(Pro) FanControl application
* 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.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "InfoPlist.h"
#import "smcWrapper.h"
#import <CommonCrypto/CommonDigest.h>
static NSDictionary *tsensors = nil;
@implementation smcWrapper
io_connect_t conn;
tsensors = [[NSDictionary alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"tsensors" ofType:@"plist"]];
+(float) get_maintemp{
float c_temp;
NSRange range_pro=[[MachineDefaults computerModel] rangeOfString:@"MacPro"];
if (range_pro.length > 0) {
//special readout for MacPro
c_temp=[smcWrapper get_mptemp];
} else {
SMCVal_t val;
NSMutableArray *allTSensors = [[tsensors allKeys] mutableCopy];
NSString *foundKey = [tsensors objectForKey:[MachineDefaults computerModel]];
if (foundKey !=nil) {
foundKey = [MachineDefaults computerModel];
} else {
foundKey = @"standard";
[allTSensors removeObject:foundKey];
SMCReadKey2((char*)[[tsensors objectForKey:foundKey] UTF8String], &val,conn);
c_temp= ((val.bytes[0] * 256 + val.bytes[1]) >> 2)/64;
if (c_temp<=0) {
for (NSString *key in allTSensors) {
SMCReadKey2((char*)[[tsensors objectForKey:key] UTF8String], &val,conn);
c_temp= ((val.bytes[0] * 256 + val.bytes[1]) >> 2)/64;
if (c_temp>0) break;
[allTSensors release];
return c_temp;
//temperature-readout for MacPro contributed by Victor Boyer
+(float) get_mptemp{
UInt32Char_t keyA;
UInt32Char_t keyB;
SMCVal_t valA;
SMCVal_t valB;
// kern_return_t resultA;
// kern_return_t resultB;
sprintf(keyA, "TCAH");
SMCReadKey2(keyA, &valA,conn);
sprintf(keyB, "TCBH");
SMCReadKey2(keyB, &valB,conn);
float c_tempA= ((valA.bytes[0] * 256 + valA.bytes[1]) >> 2)/64.0;
float c_tempB= ((valB.bytes[0] * 256 + valB.bytes[1]) >> 2)/64.0;
int i_tempA, i_tempB;
if (c_tempA < c_tempB)
i_tempB = round(c_tempB);
return i_tempB;
i_tempA = round(c_tempA);
return i_tempA;
+(int) get_fan_rpm:(int)fan_number{
UInt32Char_t key;
SMCVal_t val;
//kern_return_t result;
sprintf(key, "F%dAc", fan_number);
SMCReadKey2(key, &val,conn);
int running= _strtof(val.bytes, val.dataSize, 2);
return running;
+(int) get_fan_num{
// kern_return_t result;
SMCVal_t val;
int totalFans;
SMCReadKey2("FNum", &val,conn);
totalFans = _strtoul(val.bytes, val.dataSize, 10);
return totalFans;
+(NSString*) get_fan_descr:(int)fan_number{
UInt32Char_t key;
char temp;
SMCVal_t val;
//kern_return_t result;
NSMutableString *desc;
// desc=[[NSMutableString alloc] initWithFormat:@"Fan #%d: ",fan_number+1];
desc=[[[NSMutableString alloc]init] autorelease];
sprintf(key, "F%dID", fan_number);
SMCReadKey2(key, &val,conn);
int i;
for (i = 0; i < val.dataSize; i++) {
if ((int)val.bytes[i]>32) {
temp=(unsigned char)val.bytes[i];
[desc appendFormat:@"%c",temp];
return desc;
+(int) get_min_speed:(int)fan_number{
UInt32Char_t key;
SMCVal_t val;
//kern_return_t result;
sprintf(key, "F%dMn", fan_number);
SMCReadKey2(key, &val,conn);
int min= _strtof(val.bytes, val.dataSize, 2);
return min;
+(int) get_max_speed:(int)fan_number{
UInt32Char_t key;
SMCVal_t val;
//kern_return_t result;
sprintf(key, "F%dMx", fan_number);
SMCReadKey2(key, &val,conn);
int max= _strtof(val.bytes, val.dataSize, 2);
return max;
+ (NSString*)createCheckSum:(NSString*)path {
NSData *d=[NSData dataWithContentsOfMappedFile:path];
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5((void *)[d bytes], [d length], result);
NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH*2];
int i;
for(i = 0; i<CC_MD5_DIGEST_LENGTH; i++) {
[ret appendFormat:@"%02x",result[i]];
return ret;
//call smc binary with setuid rights and apply
+(void)setKey_external:(NSString *)key value:(NSString *)value{
NSString *launchPath = [[NSBundle mainBundle] pathForResource:@"smc" ofType:@""];
if(!launchPath) {
NSLog(@"ERROR: smcFanControl: Security Error: no smc-binary found. wont apply settings");
//first check if it's the right binary (security)
NSString *checksum=[smcWrapper createCheckSum:launchPath];
if (![checksum isEqualToString:SMC_CHECKSUM]) {
#ifdef DEBUG
NSLog(@"WARN: smcFanControl: Security Error: smc-binary is not the distributed one, will use it anyways in DEBUG mode");
NSLog(@"ERROR: smcFanControl: Security Error: smc-binary is not the distributed one. wont apply settings");
NSArray *argsArray = [NSArray arrayWithObjects: @"-k",key,@"-w",value,nil];
NSTask *task;
task = [[NSTask alloc] init];
[task setLaunchPath: launchPath];
[task setArguments: argsArray];
[task launch];
[task release];