I need to scan for and gather information about local Wifi access points in Mac OS X Linux in C++. This perhaps uses Wlan
or something akin to WlanScan
. I have similar code working in Windows that cannot possibly be translated.
This code is being built in a FireBreath development project.
Do you have an example or suggestion for scanning Wifi access points in C++ on Mac?
You can't do this in plain C++, but you can use Objective-C++ (you source file just need to have .mm extension and you can use Objective-C right in your C++ code). Take a look at CoreWLAN framework. You should write something like this:
#import <CoreWLAN/CoreWLAN.h>
struct AccessPoint
{
string ssid;
string bssid;
int rssi;
};
vector<AccessPoint> ScanAir(const string& interfaceName)
{
NSString* ifName = [NSString stringWithUTF8String:interfaceName.c_str()];
CWInterface* interface = [CWInterface interfaceWithName:ifName];
NSError* error = nil;
NSArray* scanResult = [[interface scanForNetworksWithSSID:nil error:&error] allObjects];
if (error)
{
NSLog(@"%@ (%ld)", [error localizedDescription], [error code]);
}
vector<AccessPoint> result;
for (CWNetwork* network in scanResult)
{
AccessPoint ap;
ap.ssid = string([[network ssid] UTF8String]);
ap.bssid = string([[network bssid] UTF8String]);
ap.rssi = [network rssiValue];
result.push_back(ap);
}
return result;
}
I didn't test this code, but I use similar code in my project, so it should work. Note also that I'm using ARC here. If you'll get some errors - feel free to ask in comments.
There is also example in apple documentation, but it is somewhat outdated (it is for OS X 10.6). There were some changes in OS X 10.7.
Note that CoreWLAN framework requires OS X 10.6 or greater.