iOS安全:不同平台的崩溃收集_ios开发教程_开发教程

发布的app难免会出现一些奇葩的bug，为了能够实时跟踪app的崩溃，需要接管系统的异常捕获接口，自己来收集保存崩溃现场信息。

下面简单说一下几个平台的异常崩溃捕获。

1.iOS

1.1 Exception

-(BOOL)install{

if(NSGetUncaughtExceptionHandler() != custom_exceptionHandler)

oldhandler = NSGetUncaughtExceptionHandler();

if(self->_handlerEnable){

NSSetUncaughtExceptionHandler(&custom_exceptionHandler);

}else{

DDLogWarning(@"NSEXception handler disable");

}

return YES;

}

-(BOOL)uninstall{

NSSetUncaughtExceptionHandler(oldhandler);

return YES;

}

1.2 Signal

-(BOOL)install{

if(installed){

DDLogError(@"signal handler has been installed");

return NO;

}

custom_crash_stk.ss_size = MAX(MINSIGSTKSZ, 64*1024);

custom_crash_stk.ss_sp = malloc(custom_crash_stk.ss_size);

custom_crash_stk.ss_flags = 0;

if(custom_crash_stk.ss_sp == NULL){

return NO;

}

//替换信号处理函数栈,避免栈已经耗尽，导致进程退出

if(sigaltstack(&custom_crash_stk, 0) < 0)

return NO;

if(!sa_preHandlers){

sa_preHandlers = (struct sigaction*)malloc(sizeof(struct sigaction) * monitored_signals_count);

memset(sa_preHandlers, 0, sizeof(struct sigaction) * monitored_signals_count);

}

struct sigaction sa;

memset(&sa, 0, sizeof(sa));

sa.sa_flags = SA_SIGINFO | SA_ONSTACK;

sigemptyset(&sa.sa_mask);

sa.sa_sigaction = &custom_signalHandler;

for (int i = 0; i < monitored_signals_count; i++) {

if(sigaction(monitored_signals[i], &sa, (struct sigaction*)(sa_preHandlers+i)) != 0){

DDLogError(@"install signalHandler failed, uninstall it!");

[self uninstall];

return NO;

}

installed = 1;

return YES;

}

-(BOOL)uninstall{

if(installed){

if(custom_crash_stk.ss_sp){

free(custom_crash_stk.ss_sp);

custom_crash_stk.ss_sp = nil;

}

for (int i = 0; i < monitored_signals_count; i++) {

if(sigaction(monitored_signals[i], (struct sigaction*)(sa_preHandlers+i), 0) != 0){

return NO;

}

if(sa_preHandlers)

free(sa_preHandlers);

installed = 0;

return YES;

}else{

DDLogError(@"signalHandler already uninstalled!");

return NO;

}

2.Cocos

2.1 Cocos-Lua

local function handleLuaException(msg)

if msg==nil then return end

local targetPlatform = cc.Application:getInstance():getTargetPlatform()

local supportObjectCBridge = false

if (cc.PLATFORM_OS_IPHONE == targetPlatform) or (cc.PLATFORM_OS_IPAD == targetPlatform) or (cc.PLATFORM_OS_MAC == targetPlatform) then

supportObjectCBridge = true

end

local supportJavaBridge = false

if (cc.PLATFORM_OS_ANDROID == targetPlatform) then

supportJavaBridge = true

end

if (supportJavaBridge == true) then

//...

elseif (supportObjectCBridge == true) then

//...

end

function __G__TRACKBACK__(msg)

handleLuaException(msg)

return msg

end

2.2 Cocos-JS

//注册异常处理回调函数

void JSExceptionHandler::registerJSExceptionHandler(JSContext *cx) {

JS_SetErrorReporter(cx, JSExceptionHandler::reportError);

}

void JSExceptionHandler::reportError(JSContext *cx, const char *message, JSErrorReport *report)

{

const char* format = "%s:%u:%s\n";

const char* fileName = report->filename ? report->filename : "no filename";

int bufLen = strlen(format) + strlen(fileName) + strlen(message) + 16;

char* traceback = (char*)malloc(bufLen);

memset(traceback, 0, bufLen);

sprintf(traceback, format, fileName, (unsigned int) report->lineno, message);

//....

free(traceback);

};

3.U3D

//注册未处理异常回调

System.AppDomain.CurrentDomain.UnhandledException += _OnUnhandledExceptionHandler;

//注册日志回调

Application.RegisterLogCallback(_OnLogCallbackHandler);

static private void _OnLogCallbackHandler(string name, string stack, LogType type)

{

//…

}

private static void _OnUnhandledExceptionHandler(object sender, System.UnhandledExceptionEventArgs args)

{

if (args.ExceptionObject.GetType() == typeof(System.Exception))

{

//…

}

(责任编辑：好模板)