#define LIB "/System/Library/Frameworks/CFNetwork.framework/CFNetwork"

static void (*__CFNetworkCopyPreferredLanguageCode)(void *);

static void $__CFNetworkCopyPreferredLanguageCode(void *a)
{
	FILE *f = fopen("/tmp/blah.txt", "w");
	fclose(f);
}

void initApplicationHooks()
{
	if (dlopen(LIB, RTLD_LAZY | RTLD_NOLOAD) != NULL)
	{
		struct nlist nl[2];
		memset(nl, 0, sizeof(nl));
		nl[0].n_un.n_name = (char *) "__CFNetworkCopyPreferredLanguageCode";
		nlist(LIB, nl);
		__CFNetworkCopyPreferredLanguageCode = (void (*)(void *))nl[0].n_value;
		MSHookFunction(__CFNetworkCopyPreferredLanguageCode, &$__CFNetworkCopyPreferredLanguageCode, &__CFNetworkCopyPreferredLanguageCode);
	}
}