如果是VPN服务器超时、断网、鉴权失败或者自定义VPN（对接系统的VPN接口）等情况，  通常是不会触发这个SBVPNConnectionChangedNotification。

<!-- 因此需要监听其他进程的动态---CFUserNotificationCreate -->

因为连接失败系统总要和用户交互，这个就想起了hook CFUserNotification，因为Function CFUserNotificationCreate的功能是：

Creates a CFUserNotification object and displays its notification dialog on screen.

Creates a CFUserNotification object and displays its notification dialog on screen.

<!-- vpn 相关的进程： -->
<!-- 大部分的情况是处理 nesessionmanager、sb  就足够了-->
<string>nesessionmanager</string>
<string>racoon</string>
<string>configd</string>
<string>mDNSResponder</string>
<string>networkd</string>
<string>pppd</string>

        NSBundle* references = [NSBundle bundleWithPath:@"/System/Library/PreferenceBundles/VPNPreferences.bundle"];

        https://github.com/ichitaso/iOS-iphoneheaders/tree/master/iOS7.1.1/System/Library/PreferenceBundles

https://github.com/ichitaso/iOS-iphoneheaders/blob/be1e4073114a6572b34b171245a62186a732e561/iOS7.0.3/System/Library/PrivateFrameworks/StoreServices.framework/SSClientAccountStore.h

SSAccountStore

iOS-iphoneheaders/iOS8.3/System/Library/CoreServices/SpringBoard.app/SBApplicationPlaceholderController.h

iOS-iphoneheaders/iOS8.3/System/Library/CoreServices/SpringBoard.app/SBApplicationLibraryObserver.h

/Users/devzkn/code/other/AFlexLoader-master/deploy 

<!-- Depends: mobilesubstrate, preferenceloader (>= 2.2), applist (>= 1.5.11)
 -->

preferenceloader、applist

void handleSystemPasscodeChange(CFNotificationCenterRef center,void *observer,CFStringRef name,const void *object,CFDictionaryRef userInfo) {

    global_slfe = nil;

    global_OnceUnlockSuccessfully = NO;

}

"AUTO_LOCK_NEVER"="自动锁定: 永不";
"AUTO_LOCK_MIN"="自动锁定: %d分钟";
"AUTO_LOCK_MINS"="自动锁定: %d分钟";