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cartmanguo / iphone-wireless

Automatically exported from code.google.com/p/iphone-wireless
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Error on iOS SDK 5.0 when calling open(&handle); #45

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
Following code (opening a handel with C library dlfcn.h) was working find till 
iOS 4.3.3 

----------
void *handle = 
dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", 
RTLD_LAZY);

    int (*open)(void *) = dlsym(handle, "Apple80211Open");
    int (*bind)(void *, CFStringRef) = dlsym(handle, "Apple80211BindToInterface");
    int (*close)(void *) = dlsym(handle, "Apple80211Close");        
    int (*scan)(void *, CFArrayRef *, void *) = dlsym(handle, "Apple80211Scan");

    open(&handle);    
    bind(handle, CFSTR("en0"));   
    CFDictionaryRef parameters = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);    
    CFArrayRef networks;    
    scan(handle, &networks, parameters);

----------
With new SDK 5.0 on beta getting following error, 
Is there any one who have found a solution on this?

Errors:
warning: check_safe_call: could not restore current frame
warning: Unable to restore previously selected frame.

Original issue reported on code.google.com by tso...@gmail.com on 10 Jun 2011 at 4:23

GoogleCodeExporter commented 8 years ago 
Hello, 

I'm in a kind of same situation here ... But my error is that the image is not 
found ... Because Apple change the location of their private framework ... I'm 
now looking for the new location of the WifiManager in order to update my app 
.... 
If I found something i'll share it ! 

Have Fun ! 

MaX

Original comment by Maxime.U...@gmail.com on 14 Jun 2011 at 8:28

GoogleCodeExporter commented 8 years ago 
Has anyone found a solution for this?

This is what I have found out so far:

libHandle = 
dlopen("/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager", 
RTLD_LAZY);
now returns always NULL

Just like in older iOS version, this works again now:
libHandle = 
dlopen("/System/Library/PrivateFrameworks/MobileWiFi.framework/MobileWiFi", 
RTLD_LAZY);

So maybe they have switched back to the old location of the framework.
However, using these old functions results in a crash:

open = dlsym(libHandle, "Apple80211Open");
bind = dlsym(libHandle, "Apple80211BindToInterface");
close = dlsym(libHandle, "Apple80211Close");
scan = dlsym(libHandle, "Apple80211Scan");

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

Sebastian

Original comment by sebastia...@web.de on 15 Jun 2011 at 8:25

GoogleCodeExporter commented 8 years ago 
Any news so far? Im currently working on the same Issue.

Original comment by Philip.B...@gmail.com on 28 Jun 2011 at 3:08

GoogleCodeExporter commented 8 years ago 
Calling nm on WifiManager returns the result below. However, I was not able to 
put this together to something meaningful:

         U _CFAbsoluteTimeGetCurrent
         U _CFAllocatorAllocate
         U _CFAllocatorDeallocate
         U _CFArrayAppendValue
         U _CFArrayApplyFunction
         U _CFArrayCreate
         U _CFArrayCreateMutable
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         U _CFArrayGetFirstIndexOfValue
         U _CFArrayGetValueAtIndex
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00006c38 T _WiFiNetworkSetNetworkUsage
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00006b88 T _WiFiNetworkSetWEP
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Original comment by sebastia...@web.de on 30 Jun 2011 at 1:41

GoogleCodeExporter commented 8 years ago 
I too ran into this issue when testing on iOS 5 beta 4.  Has anyone made any 
progress with this since the last post?

I am going to scour a jailed iOS 5 device to see if anything turns up on 
there...

Original comment by mattvlas...@gmail.com on 30 Jul 2011 at 2:23

GoogleCodeExporter commented 8 years ago 
Has anybody made any progress?  I need to reproduce the functionality of

Apple80211Open
Apple80211Close
Apple80211BindToInterface
Apple80211Associate
Apple80211Scan
Apple80211GetInfoCopy

I guess 

_wifi_manager_open
_wifi_manager_close

are obvious. How about binding to en0?

Original comment by c...@crimtec.com on 13 Oct 2011 at 7:44

GoogleCodeExporter commented 8 years ago 
Previously to the WifiManager.framework the MobileWifi.framework was used, am I 
wrong? But symbols do not match...

Original comment by robestra...@gmail.com on 13 Oct 2011 at 9:27

GoogleCodeExporter commented 8 years ago 
Hi sebastia...@web.de. It looks you got some good progress.
can you please share how did you managed to get above result from WifiManager?
I started again to figure out a solution.

Original comment by tso...@gmail.com on 14 Oct 2011 at 7:55

GoogleCodeExporter commented 8 years ago 
The new "Airport Utility" app from Apple probably uses the new Framework. It 
seems to be scanning for Airport Base stations. Maybe we can decompile the app 
and see what it does?

Original comment by iwha...@gmail.com on 14 Oct 2011 at 8:55

GoogleCodeExporter commented 8 years ago 
iwhacko that was actually a very good idea.

Here's a "nm AirPort" to see if it makes sense to anyone (a lot of WifiManager* 
functions)

http://pastebin.com/WSNRvWv1

Original comment by filipe.p...@impactzero.pt on 14 Oct 2011 at 9:42

GoogleCodeExporter commented 8 years ago 
I've had some experience with decompiling OSX apps, will try to see what I can 
do with the iPhone app. But that must wait until the weekend. Until then, if 
someone else feels like it, go ahead.

Original comment by iwha...@gmail.com on 14 Oct 2011 at 9:58

GoogleCodeExporter commented 8 years ago 
I've tried using class_dump on MobileWifi, but that was pretty useless, all 
I've got was an empty header file.

Original comment by robestra...@gmail.com on 14 Oct 2011 at 11:13

GoogleCodeExporter commented 8 years ago 
Then the framework is probably compiled in C instead of Objective-C. Those are 
pretty difficult to reverse engineer.

Original comment by iwha...@gmail.com on 14 Oct 2011 at 11:20

GoogleCodeExporter commented 8 years ago 
http://dvlabs.tippingpoint.com/blog/2009/03/06/reverse-engineering-iphone-appsto
re-binaries
http://pwnhome.wordpress.com/2009/04/14/basic-reverse-engineering/
http://blog.zynamics.com/2010/04/27/objective-c-reversing-i/
https://github.com/zynamics/objc-helper-plugin-ida

Some links on how to reverse engineer iPhone stuff.

Original comment by iwha...@gmail.com on 14 Oct 2011 at 11:49

GoogleCodeExporter commented 8 years ago 
Has anyone made progress on this? I got stuck when class-dump failed and 
haven't got any time to check the links that #14 provided, thanks for them 
anyway I'll check them out.

Original comment by robestra...@gmail.com on 17 Oct 2011 at 3:05

GoogleCodeExporter commented 8 years ago 
It seems like someone already figured it out. WiFiFoFum (an app for wifi 
scanning) has an update for the jailbreak community that claims it has been 
fixed to work with iOS 5:

http://www.pokmol.com/download-wififofum-app-for-ios-5-wifi-detector-analyzer-fo
r-iphone/

I wonder how they did it.

Original comment by agrana...@gmail.com on 19 Oct 2011 at 12:30

GoogleCodeExporter commented 8 years ago 
that makes it easier (a bit) instead of reversing the aiport utility, which is 
signed, we can decompile the unsigned wififofum app :P

Original comment by iwha...@gmail.com on 19 Oct 2011 at 8:05

GoogleCodeExporter commented 8 years ago 
Reversing WiFiFofum I found that is using the IPConfiguration.bundle instead of 
WiFiManager.bundle, did an nm et voila, the Apple80211Functions were there. 

Can anyone confirm if they work right out of the box with the existing code? I 
have no iOS 5 device at hand...

Original comment by robestra...@gmail.com on 19 Oct 2011 at 8:27

GoogleCodeExporter commented 8 years ago 
I can try... 
libHandle = 
dlopen("/System/Library/SystemConfiguration/IPConfiguration.bundle/WiFiManager",
 RTLD_LAZY);

does this look alright? I havent fully reversed WifiFofum yet.. ran class-dump 
but it crashes, and OTX only gave me ARM ASM with some Methodnames

Original comment by iwha...@gmail.com on 19 Oct 2011 at 8:41

GoogleCodeExporter commented 8 years ago 
Try libHandle = 
dlopen("/System/Library/SystemConfiguration/IPConfiguration.bundle/IPConfigurati
on", RTLD_LAZY);

Original comment by robestra...@gmail.com on 19 Oct 2011 at 8:43

GoogleCodeExporter commented 8 years ago 
Hehe ofcourse... it doesn't crash. However, it doesn't seem to return any 
results on a non-jailbroken device. The log says:

deny system-socket

Original comment by iwha...@gmail.com on 19 Oct 2011 at 9:15

GoogleCodeExporter commented 8 years ago 
On iOS 5 I just tried

libHandle = 
dlopen("/System/Library/SystemConfiguration/IPConfiguration.bundle/IPConfigurati
on", RTLD_LAZY);

My app doesn't crash and libHandle and all the function pointers ( i.e. open = 
dlsym(libHandle, "Apple80211Open");) are non NULL.  But when I scan for access 
points the returned array is nil.  I took a shot at binding to en1 but that 
didn't change anything.

Original comment by c...@crimtec.com on 19 Oct 2011 at 9:19

GoogleCodeExporter commented 8 years ago 
Anyone else had success with IOS 5.0 X?

I'm two days and this little success. I tried to put IPConfiguration 
Apple80211Open returns null.

Original comment by nin...@gmail.com on 20 Oct 2011 at 3:29

GoogleCodeExporter commented 8 years ago 
I tried it on a non-jailbroken device and also get "deny system-socket" when 
performing the scan. Have anyone had a chance to try it out on a jailbroken one?

Original comment by agrana...@gmail.com on 20 Oct 2011 at 6:05

GoogleCodeExporter commented 8 years ago 
@robestra (18), could you perhaps share the steps you took, to find that 
WiFiFofum uses the IPConfiguration bundle? This will help me understand a bit 
more about the process, and maybe I can use it if we still need to reverse the 
Airport Utility.

Also, you used "nm" on the IPConfiguration.bundle on the device itself?

If we can figure all of this out, it will make the process easier in the future.

Original comment by iwha...@gmail.com on 20 Oct 2011 at 7:22

GoogleCodeExporter commented 8 years ago 
I simply took notepad++ and opened the wififofum binary and looked for 
Apple80211Functions names on the file and the path to the bundles and found it. 

I have no idea if arguments or return types are still the same...

The nm I did was over a dumped IPConfiguration bundle of an iPhone 4 GSM ipsw 
file, you only have to unzip it and decrypt the heavier dmg with a tool lke 
iDecrypt. Keys for the rootfs dmgs can be found putting their filenames at 
google.

Original comment by robestra...@gmail.com on 20 Oct 2011 at 9:32

GoogleCodeExporter commented 8 years ago 
alright, thanks for the info, I will check it out after work :)

Original comment by iwha...@gmail.com on 20 Oct 2011 at 9:33

GoogleCodeExporter commented 8 years ago 
Hmm I just noticed, that after running an App which tries to use the api, that 
my 3G Data Connection seems to crash. No more internet on my phone, have to 
reboot for it to work again. So I think the API is not completely the same as 
it was.

Original comment by iwha...@gmail.com on 20 Oct 2011 at 9:38

GoogleCodeExporter commented 8 years ago 
Just to share... I simply replaced the old framework path with the new one and 
everything works great. Don't know why you guys are getting crashes.

Original comment by fop...@gmail.com on 20 Oct 2011 at 4:57

GoogleCodeExporter commented 8 years ago 
Jailbreak or not?

Original comment by iwha...@gmail.com on 20 Oct 2011 at 5:04

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
Apple80211Scan function is working but returns null.  
Does anybody know?

Original comment by jeunghwa...@gmail.com on 21 Oct 2011 at 7:47

GoogleCodeExporter commented 8 years ago 
It finally works properly or not?

Original comment by robestra...@gmail.com on 23 Oct 2011 at 10:02

GoogleCodeExporter commented 8 years ago 
I still haven't gotten the scan to work on iOS 5 with a non jailbroken phone.  
Any idea's?  I can't run with a jailbroken phone for work reasons.

Original comment by c...@crimtec.com on 26 Oct 2011 at 5:55

GoogleCodeExporter commented 8 years ago 
I have verified that using the IPConfiguration framework works for jailbroken 
phones, but for non-jailbroken phones I still get the "deny system-socket" 
error when invoking the Apple80211Scan() function. And same as #28, under 
certain circumstances, the 3G data connection breaks after using the API and 
only a reboot will fix it. Don't know why, though.

Original comment by agrana...@gmail.com on 26 Oct 2011 at 6:17

GoogleCodeExporter commented 8 years ago 
By the way, one the persons collaborating with me as a beta tester discovered 
that the issue with the 3G data connection may be related to using SemiTether 
(0.7.9-1) in his jailbroken phone. After he removed SemiTether from his phone 
he didn't have any more issues with 3G no matter what he did. I wonder if 
that's the case also in #28.

Original comment by agrana...@gmail.com on 26 Oct 2011 at 7:31

GoogleCodeExporter commented 8 years ago 
no, i don't have mine jailbroken.

Original comment by iwha...@gmail.com on 26 Oct 2011 at 7:38

GoogleCodeExporter commented 8 years ago 
@agrana... But I'm using IPConfig framework with a JB iPhone, and scan function 
is returning null, so it is not working, isn´t it? Have you managed to make a 
good wifi scan in a JB iPhone?

I have send some emails to wififofum develoeprs or contact persons but I have 
no answer from them.

I can test in both kind of iPhone, JB and not, so feel free to share what you 
have in order to test anything new.

I have change some libs and frameworks from 4.3.3 to 5.0 so if I get some good 
news I'll post it here.

I jhave notice, that IPConfig terminal command is working properly through SSH 
terminal, was this command working in iPhone JB before iOS 5?

Original comment by m.wazowski.00@gmail.com on 27 Oct 2011 at 8:45

GoogleCodeExporter commented 8 years ago 
iPseedtouched also seems to use the new API location. http://fopina.co.cc/

It would suck if the framework is not accessible from a non jailbroken device. 
But Then again, Airport Utility also scans for networks.

Original comment by iwha...@gmail.com on 27 Oct 2011 at 10:22

GoogleCodeExporter commented 8 years ago 
Hi again, can anybody explain how to use the nm commands? please. I have both 
devices iPhone 4 and iPhone 4 JB, I,m lokking for changes between 4.3.5 and 
iOS5 WiFiManager frameworks.

Other thing, looking at WiFiFofum binary, I have seen some references to 
WFManager Class. I have seen the same kind of names at WiFiPicker framework.

Original comment by m.wazowski.00@gmail.com on 27 Oct 2011 at 12:52

GoogleCodeExporter commented 8 years ago 
Hi again and again...

I have seen that WiFi Analyzer claims that is fixed to iOS 5. I'm trying to 
contact developer for more info.

Original comment by m.wazowski.00@gmail.com on 27 Oct 2011 at 1:24

GoogleCodeExporter commented 8 years ago 
Hi, is any body here finally get it working. Please share for future response.

Original comment by tso...@gmail.com on 31 Oct 2011 at 9:44

GoogleCodeExporter commented 8 years ago 
Hi, could it be possible to use this methods in MobileWiFi.framework(found with 
nm MobileWiFi):
00002960 T _wifi_device_scan_async
0000270c T _wifi_manager_close
00001cec T _wifi_manager_open

Could it be possilbe that they are quite simmilar to the Apple802Functions, but 
don't need to bind any longer?
(I mean a device running iOS usualy has only one WiFi-Chip hasn't it?)

Original comment by wurze...@googlemail.com on 2 Nov 2011 at 4:57

GoogleCodeExporter commented 8 years ago 
It seems like Airport Utility also uses MobileWiFi.framework. I however have no 
jailbroken phone with iOS5 so I cannot decrypt the binary and run a classdump 
on it.

Original comment by iwha...@gmail.com on 2 Nov 2011 at 7:48

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
Where did the comment(which was #45) from the WiFiFoFum Developer go?????

Which API can you recommend?

Original comment by mabst...@googlemail.com on 3 Nov 2011 at 8:24

GoogleCodeExporter commented 8 years ago 
to quote the missing message:

"Hi dev of WiFiFoFum here! You used to be able to use the WiFiManager in a non 
jailbroken app with the   com.apple.wifi.manager-access entitlement, similar to 
how you give your app keychain access or get-task-allow for ad hoc builds. 
Since about Xcode 4.1 you can no longer give that entitlement to your app 
because Xcode throws an error invalid entitlement when you try to deploy. 
Currently the only way to use WiFI in OS 5 is to deploy to /Applications in a 
jailbroken environment and there are several APIs you can use that offer 
various different features."

I can confirm that the Apple Airport Utility has this entitlement in the 
Entitlements.plist. I'll try to see If i can make a build using an old sdk 
tonight, since it apparently doesnt work with xcode 4

Original comment by iwha...@gmail.com on 3 Nov 2011 at 11:55

GoogleCodeExporter commented 8 years ago 
Can any body tell me if its possible to get the method signature of 
WiFiDeviceScanAsync?

If yes how can i do this?

I want to try if that Method (in the MobileWifi.framework) works...

Original comment by mabst...@googlemail.com on 7 Nov 2011 at 7:51

GoogleCodeExporter commented 8 years ago 
I just test it with my non-jailbreak phone, iOS5:

[Crushed - image not found error]
/System/Library/SystemConfiguration/IPConfiguration.bundle/WiFiManager
/System/Library/SystemConfiguration/WiFiManager.bundle/WiFiManager

[Crushed with warning] 
warning: check_safe_call: could not restore current frame
warning: Unable to restore previously selected frame.
/System/Library/PrivateFrameworks/MobileWiFi.framework/MobileWiFi

[Did not crush but it returns zero]
/System/Library/SystemConfiguration/IPConfiguration.bundle/IPConfiguration

Original comment by kiichi.t...@objectgraph.com on 10 Nov 2011 at 5:04

GoogleCodeExporter commented 8 years ago 
Hello their I just update my iPad to iOS5 and xCode to 4.2 and run again my 
previews application with searching AP. I have the same problem.  
I try all these paths and I realize that no one can do anything.. So I have the 
same problem too.. 
I am looking forward to listen from you guys some solutions because I realize 
that your experts. 

I am using a non-jailbreak iOS too, and I can't do it because of my work. 
Thanks all of you for the above info.. 
However if I can try anything and in my device (iPad 2) let me know.. 
good luck!

Original comment by csiloua...@googlemail.com on 11 Nov 2011 at 2:54