How to enumerate all available Wifi networks at range?

There are pre-2.0 solutions to be found on the Internet. One of them seems to be as follows.

There are pre-2.0 solutions to be found on the Internet. One of them seems to be as follows: void *libHandle; void *airportHandle; int (*open)(void *); int (*bind)(void *, NSString *); int (*close)(void *); libHandle = dlopen("/System/Library/Frameworks/Preferences. Framework/Preferences", RTLD_LAZY); open = dlsym(libHandle, "Apple80211Open"); bind = dlsym(libHandle, "Apple80211BindToInterface"); close = dlsym(libHandle, "Apple80211Close"); open(&airportHandle); bind(airportHandle, CFSTR("en0")); close(&airportHandle); dlclose(libHandle); I'm not sure if accessing this framework is off limits.

But running it causes a EXC_BAD_ACCESS. So either the code is wrong, the framework has changed or it's somehow locked. Forgive me for any obvious Objective-C faux-pas.

I've only been speaking Objective-C since Thursday, so my Objective-C fluency is probably like parachuting a latin speaker into a hostile Transylvanian mountian region.

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