How to change "Call Waiting" programmatically in iOS (jailbreak device)? - ios

Question

I wan't to turn on/off the call waiting feature of iPhone (that can be found at Settings > Phone > Call Waiting) programmatically.
What I have figured out is that the phone settings calls -setCallWaitingEnabled:specifier: method from PhoneSettingsCallWaitingController class found here. I found it in /System/Library/PreferenceBundles/MobilePhoneSettings.bundle/Call Waiting.plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>id</key>
<string>com.apple.preferences.phone.call-waiting</string>
<key>items</key>
<array>
<dict>
<key>cell</key>
<string>PSGroupCell</string>
</dict>
<dict>
<key>cell</key>
<string>PSSwitchCell</string>
<key>get</key>
<string>callWaitingEnabled:</string>
<key>label</key>
<string>Call Waiting</string>
<key>set</key>
<string>setCallWaitingEnabled:specifier:</string>
</dict>
</array>
<key>title</key>
<string>Call Waiting</string>
</dict>
</plist>
I loaded the bundle manually and initialized the above class and called the method I said but nothing happens. Here's the code:
NSBundle *b = [NSBundle bundleWithPath:#"/System/Library/PreferenceBundles/MobilePhoneSettings.bundle"];
BOOL success = [b load];
if (success)
{
NSLog(#"\n\n\n\n Bundle load successfull! \n\n\n\n ");
Class PhoneSettingsCallWaitingController = NSClassFromString(#"PhoneSettingsCallWaitingController");
id tc = [[PhoneSettingsCallWaitingController alloc] init];
[tc setCallWaitingEnabled:0 specifier:0];
} else NSLog(#"\n\n\n\n Bundle load failure! \n\n\n\n ");
I don't know if I'm in the correct path. Is there another way to turn on/off the Call Waiting setting?

Answer 1

Declarations for CoreTelephony.framework private APIs
CF_EXTERN_C_BEGIN
CF_EXPORT CFNotificationCenterRef CTTelephonyCenterGetDefault();
CF_EXPORT void CTTelephonyCenterAddObserver(CFNotificationCenterRef center, const void *observer, CFNotificationCallback callBack, CFStringRef name, const void *object, CFNotificationSuspensionBehavior suspensionBehavior);
CF_EXPORT void CTSettingRequest(NSDictionary* dict);
CF_EXPORT void CTSettingSave(NSDictionary* dict);
CF_EXPORT NSString* kCTSettingCallClassVoice;
CF_EXPORT NSString* kCTSettingTypeCallWaiting;
CF_EXPORT NSString* kCTSettingType;
CF_EXPORT NSString* kCTSettingCallClass;
CF_EXPORT NSString* kCTSettingEnabled;
CF_EXTERN_C_END
Setting requests and saves are done asynchronously. Results will be sent to telephony center callback:
void SettingCallback(CFNotificationCallback center, void* observer, NSString* name, const void* objec, NSDictionary* userInfo)
{
if ([name isEqualToString:#"kCTSettingRequestSuccessNotification"])
{
//Setting request results are in 'userInfo' argument
}
else if ([name isEqualToString:#"kCTSettingRequestErrorNotification"])
{
//Setting request error
}
else if ([name isEqualToString:#"kCTSettingSaveSuccessNotification"])
{
//Setting saved
}
else if ([name isEqualToString:#"kCTSettingSaveErrorNotification"])
{
//Setting save error
}
}
...
CTTelephonyCenterAddObserver(CTTelephonyCenterGetDefault(), NULL, SettingCallback, NULL, NULL, CFNotificationSuspensionBehaviorHold);
Request call waiting setting:
CTSettingRequest(#{#"STSettingTypeUniqueIdentifier" : kCTSettingTypeCallWaiting,
kCTSettingCallClass : kCTSettingCallClassVoice,
kCTSettingType : kCTSettingTypeCallWaiting});
Save call waiting setting (in this case, enabled):
CTSettingSave(#{#"STSettingTypeUniqueIdentifier" : kCTSettingTypeCallWaiting,
kCTSettingCallClass : kCTSettingCallClassVoice,
kCTSettingType : kCTSettingTypeCallWaiting,
kCTSettingEnabled : #YES});