objective c - How to programmatically get iOS's alphanumeric version string

Question

I've been working with the nice PLCrashReport framework to send to my server the crash reports from my user's iOS devices.

However, to symbolicate the crash report, the symbolicatecrash utility requests that along with the iPhone OS version number, I have the ipsw's alphanumeric version, in the form of:

OS Version:      iPhone OS 4.0.1 (8A293)

I know that I can get the iOS's numeric version by [[UIDevice currentDevice] systemVersion], but how can I get the other one?

I can't find a way, and I've searched everywhere I could imagine.

Answer 1

Not sure why others are saying that this is not possible because it is using the sysctl function.

#import <sys/sysctl.h>    

- (NSString *)osVersionBuild {
    int mib[2] = {CTL_KERN, KERN_OSVERSION};
    u_int namelen = sizeof(mib) / sizeof(mib[0]);
    size_t bufferSize = 0;

    NSString *osBuildVersion = nil;

    // Get the size for the buffer
    sysctl(mib, namelen, NULL, &bufferSize, NULL, 0);

    u_char buildBuffer[bufferSize];
    int result = sysctl(mib, namelen, buildBuffer, &bufferSize, NULL, 0);

    if (result >= 0) {
        osBuildVersion = [[[NSString alloc] initWithBytes:buildBuffer length:bufferSize encoding:NSUTF8StringEncoding] autorelease]; 
    }

    return osBuildVersion;   
}