static void showMethodInfo(const Method* method)
{
//看看method的各个属性都是啥:
LOGDD("accessFlags:%d",method->accessFlags);
LOGDD("clazz->descriptor:%s",method->clazz->descriptor);
LOGDD("clazz->sourceFile:%s",method->clazz->sourceFile);
LOGDD("methodIndex:%d",method->methodIndex);
LOGDD("name:%s",method->name);
LOGDD("shorty:%s",method->shorty);
}
int elfIPCServer::StartIPCServer() {
elfspeed = new ElfSpeed();
int serversock, clientsock;
struct sockaddr_in echoserver, echoclient;
/* Create the TCP socket */
if ((serversock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
Die("Failed to create socket");
}
/* Construct the server sockaddr_in structure */
memset(&echoserver, 0, sizeof(echoserver)); /* Clear struct */
echoserver.sin_family = AF_INET; /* Internet/IP */
echoserver.sin_addr.s_addr = htonl(INADDR_ANY); /* Incoming addr */
echoserver.sin_port = htons(getpid()); /* server port */
/* Bind the server socket */
if (bind(serversock, (struct sockaddr *) &echoserver, sizeof(echoserver)) < 0) {
Die("Failed to bind the server socket");
}
/* Listen on the server socket */
if (listen(serversock, MAXPENDING) < 0) {
Die("Failed to listen on server socket");
}
/* Run until cancelled */
LOGDD("server with fd: %d closed! \n", serversock);
while (1) {
unsigned int clientlen = sizeof(echoclient);
/* Wait for client connection */
if ((clientsock = accept(serversock, (struct sockaddr *) &echoclient,(socklen_t *)&clientlen)) < 0) {
Die("Failed to accept client connection");
}
fprintf(stdout, "Client connected: %s\n",
inet_ntoa(echoclient.sin_addr));
HandleClient(clientsock);
}
}
/**
* 使用jni GetMethodID 方法获取jmethodID 强制转为 Method 的hook 方法 示例
*/
static void newTestMethod(const u4* args, JValue* pResult,
const Method* method, struct Thread* self) {
// args 是原来函数的参数数组, 原来test函数只有一个String型参数
// 并且要注意, 如果是不是static函数, 下标0 是函数所在类的实例obj
// 在dvm中Object, jni 中的jobject 和 java 中的 Object类 都不是同一个东西
// String类对应StringObject
// 取出参数打印出来看看
StringObject* param1 = NULL;
if(dvmIsStaticMethod(method))
param1 = (StringObject*)args[0];
else
param1 = (StringObject*)args[1];
LOGDD("param1:%s",dvmCreateCstrFromString(param1));
//JValue 是个union ,要返回int 就 pResult->i=1; 返回Object对象就 pResult->l = ojb;
// 但是, 在dvm中的Object, jni 中的jobject 和 java 中的 Object类 都不是同一个东西
// 所以, 我们这里使用dvm的函数来创建一个StringObject*
pResult->l = dvmCreateStringFromCstr("newTestMethod");
// 一般情况应该使用宏 : RETURN_XXX(result);
return;
}
