Hi,

I had to associate my iPhone to a given SSID, so I reverse engineered the associate function:

int Apple80211Associate(struct Apple80211 *handle, CFDictionaryRef *network, CFString *wpa_key);

handle: An open handle from an Apple80211Open call, that has also been bound to an interface using Apple80211BindToInterface.

network: one of the CFDictionaryRefs returned by the Apple80211Scan function.

wpa_key: NSString containing the WPA PSK.

Hopes that helps, Renault

Hi Renault,

I would like to join a special SSID but do not know how? Could you explain me how you managed to do so?

I was wondering if there exist Wifi libraries for IPhone that offer functions such Access Point scanning, association.... Actually, I would like to store my credentials (login/password) on the IPhone and to log automatically on an HTML authentication based Access Point. I I tried to search on the web, especially on apple website but I did not find anything...

I really need some help! Thanks

Hi Ranult, I am also trying to use the same Apple80211Associate using its address(pointer) to associae to unsecure AP,I am passing the same dictionary as the secone argument returned by the scan. But the function fails with error code 9. Were you able to associte using this function. If YES could you please help me outif I'm missing anything.

Thanks Raj

can you post the code snippet?

Hmm ... I've got everything working except associating with a network in 3.0. I'm getting a -101 result--??

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Russmcb, you are too nearer the goal.

first confirm that you are passing single network(access point) data as network parameter and password(if it is WPA/WAP network) in 3rd parameter else nil.

Should've posted some time ago that the 3rd parameter must be nil, not an empty string. Had this working for some time. Thanks, though!

Has anyone been able to use Apple80211Associate on 3.1.*? It doesn't work for me and I'm at a loss as to why. I get all kinds of error codes: 9, -4, -101 but never 0 and I have no indication that it worked at all. I've tried both with a network without encryption and one with encryption.

Also, is this a blocking call? Or does it trigger an asynchronous task that fires a notification when done? If so, what notification is raised?

Thanks!

Hi, the Apple80211Associate is still working (at least on 3.1.2). Between the iPhone OS 2 and 3, the framework has changed name, so you should bind your functions as following:

void *airportHandle; int (*Apple80211Open)(void *); int (*Apple80211BindToInterface)(void *, NSString *); int (*Apple80211Close)(void *); int (*Apple80211Info)(void , NSDictionary*); int (*Apple80211Associate)(void , NSDictionary, void *); int (*Apple80211Scan)(void , NSArray *, void *);

libHandle = dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", RTLD_LAZY); Apple80211Open = dlsym(libHandle, "Apple80211Open"); Apple80211BindToInterface = dlsym(libHandle, "Apple80211BindToInterface"); Apple80211Scan = dlsym(libHandle, "Apple80211Scan"); Apple80211Close = dlsym(libHandle, "Apple80211Close"); Apple80211Info = dlsym(libHandle, "Apple80211GetInfoCopy"); Apple80211Associate = dlsym(libHandle, "Apple80211Associate");

The most significant change from v2 to v3 is SCAN_RSSI_THRESHOLD parameter (used for the scan function). It use to take a positive number, far from the physical dB it should have been
and now it takes the dB of the signal. If you make use of it, you can set it to -100:

Here is a code snipped (cherry picked from my code, so untested as is):

void *airportHandle;

NSArray *keys = [NSArray arrayWithObjects:@"SCAN_RSSI_THRESHOLD", @"SSID_STR", nil]; NSArray *objects = [NSArray arrayWithObjects:[NSNumber numberWithInt:-100], ssid, nil];

NSDictionary *params = [NSDictionary dictionaryWithObjects:objects forKeys:keys]; NSArray *found;

int openResult = Apple80211Open(&airportHandle); NSLog(@"Openning wifi interface %@", (openResult == 0?@"succeeded":@"failed"));

int bindResult = Apple80211BindToInterface(airportHandle, @IF_NAME);

int scanResult = Apple80211Scan(airportHandle, &found, params);

NSDictionary *network;

// get the first network found network = [found objectAtIndex:0]; int associateResult = Apple80211Associate(airportHandle, network,NULL);

Apple80211Close(airportHandle);

Hope that's helps, Renault

Hey thanks for the quick and detailed answer Renault. Got it working now :-) One extra question: is there a way to know when the association is complete? Following the call, the OS pops up the Wifi network selection dialog and I'd like to wait until the user has dismissed this dialog before attempting to connect to a host. Do you know if some notification is raised to signal that?

Thanks a bunch

Deal all,

when i try to use the framework, the following error happened, could you please tell me what shall i do? dlopen(/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager, 1): image not found

my simulator is OS 3.1.3. thanks a lot.

Anyone have an explanation on the return values yet? I can associate with my network using the WPA key. But sometimes it fails, giving me either a return value of -6 or 16

@ToLiBing: this only works on the actual device, not on the Simulator.

im curently looking to make an app for the iphone that scans for a particular wifi networkk and connects to it. im however not able to make a headstart. could anyone help point me in a direction to using the stumbler code in my application?

How are things working in OS 4.0?

My App still works, so I guess nothing changed since 3.1.3

How can I detect signal strenght and other information of nearby bluetooth devices ? Will applications that use these libraries be allowed on the itunes store ?

My app fails over ios4.

I'm sorry, I found that there is a problem if u're running with simulator.

i have problem working on ios4 too.

Yes now I can't use bluetooth over iOS4!!

this still works fine for me on iOS4: - (id)init { self = [super init]; NetworksManager = self; networks = [[NSMutableDictionary alloc] init]; types = [NSArray arrayWithObjects:@"80211", @"Bluetooth", @"GSM", nil]; [types retain]; autoScanInterval = 5; //seconds libHandle = dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", RTLD_LAZY); open = dlsym(libHandle, "Apple80211Open"); bind = dlsym(libHandle, "Apple80211BindToInterface"); close = dlsym(libHandle, "Apple80211Close"); scan = dlsym(libHandle, "Apple80211Scan");

open(&airportHandle);
bind(airportHandle, @"en0");
return self;

}

• (void)scan { NSLog(@"Scanning..."); scanning = true; [[NSNotificationCenter defaultCenter] postNotificationName:@"startedScanning" object:self]; NSArray *scan_networks; NSDictionary *parameters = [[NSDictionary alloc] init]; scan(airportHandle, &scan_networks, parameters); int i; bool changed; for (i = 0; i < [scan_networks count]; i++) { if([networks objectForKey:[[scan_networks objectAtIndex: i] objectForKey:@"BSSID"]] != nil && ![[networks objectForKey:[[scan_networks objectAtIndex: i] objectForKey:@"BSSID"]] isEqualToDictionary:[scan_networks objectAtIndex: i]]) changed = true; [networks setObject:[scan_networks objectAtIndex: i] forKey:[[scan_networks objectAtIndex: i] objectForKey:@"BSSID"]]; } if(changed) { [[NSNotificationCenter defaultCenter] postNotificationName:@"NetworksUpdated" object:self]; } scanning = false; [[NSNotificationCenter defaultCenter] postNotificationName:@"stoppedScanning" object:self]; NSLog(@"Scan Finished..."); }

Can you connect between two iphones via bluetooth over iOS4?

I'm not sure if it's possible using this method. BUT Apple allows iPhone-to-iPhone communication over bluetooth in the GameKit Framework: http://stackoverflow.com/questions/1049393/gamekit-in-iphone-sdk-3-0

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Hi guys,

I have just started to make a iPhone Wifi scanning app. I have searched a lot websites, finally I have the recent code the below. Someone told this is working for iPhoneOS4.0 well.

libHandle = dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", RTLD_LAZY); open = dlsym(libHandle, "Apple80211Open"); bind = dlsym(libHandle, "Apple80211BindToInterface"); close = dlsym(libHandle, "Apple80211Close"); scan = dlsym(libHandle, "Apple80211Scan");

But, I have the below warnings.

warning: Unable to read symbols for "/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.0.1/Symbols/usr/lib/libpcap.A.dylib" (file not found). warning: Unable to read symbols for "/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.0.1/Symbols/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager" (file not found).

I am using xcode_3.2.3_and_ios_sdk_4.0.1 and iPhone 3G device that jailbroken, unlocked and updated to 4.0.1.

I know, if I use a private API, can not service and get a risks, but I should do that. If you any clue about this, please let me know.

Thanks.

This code does not work on the simulator, only on the device. Try to run your code on the iPhone directly.

Renault

I have tried it on he device. but the same. The device is jailbroken, unlocked and updated to 4.0.1.

What are the errors when you run on the device? because the errors you pasted are from the simulator.

Thank you for your reply, the code is working fine, I can ignore the warning. Thanks. Does anybody know about the error codes of associate? What is the meaning of -101 and others?

I am having a problem connecting to unsecured networks. My app will connect fine to my WEP network, but I get a -3900 error when I try to connect to a network without a password. I have tried sending both an empty string and nil for the third parameter, but neither worked

Does anyone here know how to get the IP Address after associated.

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When I associate to hotspot, it is just associated, not connected to the hotspot access point. After associated, how can I make it connected?

After associated, If I open a browser, the browser make it connected. So, I think, the browser do something, but I do not know the something. ^^;;;;

Hi Renault

Which tools have you used to reverse engineered Apple80211Associate? could you describe the process to me please? my email is: jibrilg@gmail.com.

Regards

Hi, Renault,

Do you have any idea how I can detect the signal strenghts of several access points? I will need it for an academic test, thanks very much!

Hi Zhyujjh (is it your name or an acronym?)

You have to use the scan function. If this function call is successful, it will return in the variable "CFArrayRef *list" the list of all available networks (it is a list of NSDictionary). Iterate over this array and extract the RSSI key, from the dictionary.

I hope it helps, Renault

Does anyone know how to toggle the Wifi on an off? On the desktop library, at least, we've got functions like: WirelessSetPower(). Any ideas?

Thanks, r

hi, i m new to iphone and want to know how can i scan other wifi enabled devices. i read the discussion above but not getting where to start from.is there any framework that i need to import? any suggestion? thanks.

Shreya

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Apple has moved the API /System/Library/SystemConfiguration/IPConfiguration.bundle to somewhere else in IOS8 ... As this API is not working ... Can Anyone Please tell me the new Path ..

Dear All, I am currently looking for making an app for iPhone that scans for a particular wifi network and connects to it. I will have list of all SSID & passwords. Also, I have to upload this application to store. So, I cannot use Private frameworks. Could anyone please help me.

I tried above solutions but its not working. I am not getting where to start from. Any suggestions?

Thanks.

i am not find the list of all scan wifi network device SSID.