Getting Mac Model number in Cocoa

I'm making a OS X app where I need to get the Mac model, for example:

iMac11,3
MacBook3开发者_如何转开发,1

And so on. Is there any class, or function to get it?

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This information is available via. sysctl:

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/sysctl.h>

size_t len = 0;
sysctlbyname("hw.model", NULL, &len, NULL, 0);
if (len) {
    char *model = malloc(len*sizeof(char));
    sysctlbyname("hw.model", model, &len, NULL, 0);
    printf("%s\n", model);
    free(model);
}

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The API for that would be in the IOKit. Looking in the IORegistryExplorer app on my laptop, I see that the first node from the root of the IOService tree is an IOPlatformExpertDevice, with a entry under the key "model" equal to "MacBookPro6,1"

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I'm not sure if there is an exact way of getting it through Cocoa, but you can use NSTask and get this through shell.

sysctl hw.model

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While not using a direct Cocoa API, you could use NSTask to execute the "system_profiler" command line tool. If you execute the tool as: "system_profiler SPHardwareDataType" it will give you a smaller output which could be filtered to extract the model identifier.

Update

I found an example using sysctl programmatically:

int mib[2];
size_t len = 0;
char *rstring = NULL;

mib[0] = CTL_HW;
mib[1] = HW_MODEL;
sysctl( mib, 2, NULL, &len, NULL, 0 );
rstring = malloc( len );
sysctl( mib, 2, rstring, &len, NULL, 0 );
NSLog(@"%s", rstring );
free( rstring );
rstring = NULL;

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