freddon
发表于2016-10-21
阅读 1252 |
评论 1
使用JNI fork进程实现 监控自身App被卸载
首先这个功能仅供cankao 也可以使用linux exec命令跳转到浏览器的反馈页
我使用的环境
IDE：Android Studio 2.0
gj：Android 4.4.2
Android.mk
```shell
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE:=uninstall
LOCAL_SRC_FILES:=uninstall.c
LOCAL_C_INCLUDES:= $(LOCAL_PATH)/include
LOCAL_SHARED_LIBRARIES := liblog libcutils
LOCAL_LDLIBS += -L$(SYSROOT)/usr/lib -llog
include $(BUILD_SHARED_LIBRARY)
```
C代码：
原理是借用网上的监控文件夹变化(因为如果应用卸载了 对应的/data/data/包 文件夹也会发生变化)
```c
// uninstall.c
// Created by Fred on 16/4/19.
//
// email:[email protected]
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "GUNetDef.h"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, "fred", __VA_ARGS__)
static char c_TAG[] = "onEvent";
#define BUFFER_SIZE 2
int Connect(int *sock, const char *address, unsigned short port) {
int _sk = socket(AF_INET, SOCK_STREAM, 0);
if (_sk == INVALID_SOCKET)
return NET_SOCKET_ERROR;
struct sockaddr_in sockAddr;
memset(&sockAddr, 0, sizeof(sockAddr));
sockAddr.sin_family = AF_INET;
sockAddr.sin_addr.s_addr = inet_addr(address);
sockAddr.sin_port = htons(port);
if (sockAddr.sin_addr.s_addr == INADDR_NONE) {
struct hostent *host = gethostbyname(address);
if (host == NULL) {
return NET_SOCKET_ERROR;
}
sockAddr.sin_addr.s_addr = ((struct in_addr *) host->h_addr)->s_addr;
}
fcntl(_sk, F_SETFL, O_NONBLOCK | fcntl(_sk, F_GETFL)); // 设置成非阻塞
int ret = connect(_sk, (struct sockaddr *) &sockAddr, sizeof(struct sockaddr));
fd_set fdset;
struct timeval tmv;
FD_ZERO(&fdset);
FD_SET(_sk, &fdset);
tmv.tv_sec = 15; // 设置超时时间
tmv.tv_usec = 0;
ret = select(_sk + 1, 0, &fdset, 0, &tmv);
if (ret == 0) {
return NET_CONNNECT_TIMEOUT;
}
else if (ret < 0) {
return NET_SOCKET_ERROR;
}
int flags = fcntl(_sk, F_GETFL, 0);
flags &= ~O_NONBLOCK;
fcntl(_sk, F_SETFL, flags); // 设置成阻塞
*sock = _sk;
return SUCCESS;
}
int SendData(int _sk, const UInt8 *buffer, int bufferSize) {
int ret = send(_sk, buffer, bufferSize, 0);
if (ret != bufferSize)
return NET_SOCKET_ERROR;
return SUCCESS;
}
int DisConnect(int _sk) {
if (_sk != INVALID_SOCKET) {
close(_sk);
_sk = INVALID_SOCKET;
}
return SUCCESS;
}
// signal(SIGPIPE,SIG_IGN);//自己可以处理一些信号
void request(char *host, int port, char *reqHead) {
int sk = INVALID_SOCKET;
int ret = Connect(&sk, host, port);
if (ret != SUCCESS)
return;
ret = SendData(sk, reqHead, strlen(reqHead));
LOGI("SendData TRACE");
if (ret != SUCCESS) {
LOGI("send data error");
return;
}
LOGI("send data success");
DisConnect(sk);
LOGI("DisConnect");
//后续处理返回的数据即可 由于本功能不需要 so省略
}
typedef struct paraStruct {
char *watch_path;
char *cpath;
char *chost;
char *para;
char *method;
int cport;
} paraStruct;
int httpRequester(paraStruct *data) {
char s[2048] = {0};
LOGI("c-code::method=%s",data->method);
if (strcmp(data->method, "POST") == 0) {
sprintf(s,
"POST %s HTTP/1.1\r\nHost: %s\r\nCache-Control: no-cache\r\nContent-Length: %d\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n%s",
data->cpath, data->chost, strlen(data->para), data->para);
}
else if (strcmp(data->method, "GET") == 0) {
sprintf(s,
"GET %s HTTP/1.1\r\nHost: %s\r\nCache-Control: no-cache\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n",
data->cpath, data->chost);
} else {
return 1;
}
request(data->chost, data->cport, s);
return 0;
}
void *threadBegin(void *arg) {
paraStruct *data = arg;
if (data) {
int fileDescriptor = inotify_init();
if (fileDescriptor < 0) {
LOGI("inotify_init failed !!!");
exit(1);
}
int watchDescriptor;
watchDescriptor = inotify_add_watch(fileDescriptor,
data->watch_path, IN_DELETE);
if (watchDescriptor < 0) {
LOGI("inotify_add_watch failed !!!");
exit(1);
}
//分配缓存，以便读取event，缓存大小=一个struct inotify_event的大小，这样一次处理一个event
void *p_buf = malloc(sizeof(struct inotify_event));
if (p_buf == NULL) {
LOGI("malloc failed !!!");
exit(1);
}
//开始监听
LOGI("start observer");
//read会阻塞进程，b
size_t readBytes = read(fileDescriptor, p_buf,
sizeof(struct inotify_event));
//走到这里说明收到目录被删除的事件，注销监听器
free(p_buf);
inotify_rm_watch(fileDescriptor, IN_DELETE);
//目录不存在log
LOGI("uninstalled");
//扩展：可以执行其他shell命令，am(即activity manager)，可以打开某程序、服务，broadcast intent，等等
data->method="POST";
httpRequester(data);
exit(0);
}
return 0;
}
int commonJavaSegment(const char *watch_path,
const char *cpath, const char *chost,
const char *para, int port) {
//初始化log
LOGI("init OK");
//fork子进程，以执行轮询任务
pid_t pid;
pid = fork();
if (pid) {
LOGI("pid=%d", pid);
} else if (pid == 0) {
//子进程注册目录监听器
LOGI("child:: start");
paraStruct *data = malloc(sizeof(paraStruct));
data->watch_path = watch_path;
data->cpath = cpath;
data->chost = chost;
data->para = para;
data->cport = port;
threadBegin(data);
} else {
//父进程直接退出，使子进程被init进程领养，以避免子进程僵死
LOGI("fork failed !!!");
}
return 0;
}
static int start_count=0;//【当然也可以通过互斥锁来标记子进程是否正在运行】
//this jni method made by rec unistall event and feedback
JNIEXPORT int Java_com_freddon_android_app_utils_JNILoader_uninstall(JNIEnv *env, jobject thiz,
jarray path,
jstring httppath, jstring cs,
jstring host, jint port) {
++start_count;
if(start_count>2){//为什么会设置大于2不是1 我测试下来至少为2才会执行
return 0;//说明已经执行过了监控代码
}else{
const char *watch_path = (*env)->GetStringUTFChars(env, path, NULL);
const char *cpath = (*env)->GetStringUTFChars(env, httppath, JNI_FALSE);
const char *chost = (*env)->GetStringUTFChars(env, host, JNI_FALSE);
const char *para = (*env)->GetStringUTFChars(env, cs, JNI_FALSE);
return commonJavaSegment(watch_path, cpath, chost, para, port);
}
}
JNIEXPORT int Java_com_freddon_android_app_utils_JNILoader_httpConnect(JNIEnv *env, jobject thiz,
jstring method,
jstring host,
jstring httppath, jstring cs,
jint port) {
const char *cpath = (*env)->GetStringUTFChars(env, httppath, JNI_FALSE);
const char *chost = (*env)->GetStringUTFChars(env, host, JNI_FALSE);
const char *para = (*env)->GetStringUTFChars(env, cs, JNI_FALSE);
const char *cmethod = (*env)->GetStringUTFChars(env, method, JNI_FALSE);
paraStruct *data = malloc(sizeof(paraStruct));
data->cpath = (char *)cpath;
data->chost =(char *)chost;
data->para = (char *)para;
data->cport = port;
data->method = (char *)cmethod;
return httpRequester(data);
}
```
GUNetDef.h 相关错误码
```c
//
// GUNetDef.h
//
#ifndef MyGoUDome_GUNetDef_h
#define MyGoUDome_GUNetDef_h
#define NET_Header_ID (0x7F)
#define NET_Header_VER (0x01)
#define NET_MAX_PACKET_SIZE (4096)
#define NET_NETWORK_PUBLIC (0) // 是否为公网环境
#if NET_NETWORK_PUBLIC
# define NET_AUTHSERVER_ADDR "s1.goyou.cn"
# define NET_AUTHSERVER_PORT (33880)
#else
# define NET_AUTHSERVER_ADDR "192.168.108.181"
# define NET_AUTHSERVER_PORT (33880)
#endif
#define NET_TOKEN_SIZE (16)
#define NET_UUID_SIZE (16)
typedef unsigned char UInt8;
// 数据头
typedef struct {
UInt8 head4[4]; // index 0: NET_Header_ID; index 1: NET_Header_VER; 2:插件号 ;3:命令字
int dataLen;
}t_net_header;
#define kMyGoUNetworkErrorDomain @"MyGoUNetworkErrorDomain"
// 通信错误码定义
#define SUCCESS 0
// socket 相关错误码
#define INVALID_SOCKET (~0)
#define NET_SOCKET_ERROR -1
#define NET_CONNNECT_TIMEOUT -100
#define NET_RECV_TIMEOUT -200
#define NET_COMMUNICATOR_ERROR -500
#endif
```
android
```
//JNILoader.java
package com.freddon.android.app.utils;
public class JNILoader {
static {
System.loadLibrary("uninstall");
}
public static native int uninstall(String androidPath, String path, String cs, String host, int port);
public static native int httpConnect(String method, String path, String cs, String host, int port);
}
```
```java
//调用代码
String host = 192.168.111.10;//host地址【域名也可以不要带协议头】
String path = "/unistall";
String csv = "ver=1.1";
return JNILoader.unistl("/data/data/" + context.getPackageName(), path, csv, host, port);
```
> `注意:代码仅供参考，因为在生产环境出现过很奇怪的bug；`
分类 ：工作日志
首先这个功能仅供cankao 也可以使用linux exec命令跳转到浏览器的反馈页
我使用的环境
IDE：Android Studio 2.0
gj：Android 4.4.2
Android.mk
```shell
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE:=uninstall
LOCAL_SRC_FILES:=uninstall.c
LOCAL_C_INCLUDES:= $(LOCAL_PATH)/include
LOCAL_SHARED_LIBRARIES := liblog libcutils
LOCAL_LDLIBS += -L$(SYSROOT)/usr/lib -llog
include $(BUILD_SHARED_LIBRARY)
```
C代码：
原理是借用网上的监控文件夹变化(因为如果应用卸载了 对应的/data/data/包 文件夹也会发生变化)
```c
// uninstall.c
// Created by Fred on 16/4/19.
//
// email:[email protected]
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "GUNetDef.h"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, "fred", __VA_ARGS__)
static char c_TAG[] = "onEvent";
#define BUFFER_SIZE 2
int Connect(int *sock, const char *address, unsigned short port) {
int _sk = socket(AF_INET, SOCK_STREAM, 0);
if (_sk == INVALID_SOCKET)
return NET_SOCKET_ERROR;
struct sockaddr_in sockAddr;
memset(&sockAddr, 0, sizeof(sockAddr));
sockAddr.sin_family = AF_INET;
sockAddr.sin_addr.s_addr = inet_addr(address);
sockAddr.sin_port = htons(port);
if (sockAddr.sin_addr.s_addr == INADDR_NONE) {
struct hostent *host = gethostbyname(address);
if (host == NULL) {
return NET_SOCKET_ERROR;
}
sockAddr.sin_addr.s_addr = ((struct in_addr *) host->h_addr)->s_addr;
}
fcntl(_sk, F_SETFL, O_NONBLOCK | fcntl(_sk, F_GETFL)); // 设置成非阻塞
int ret = connect(_sk, (struct sockaddr *) &sockAddr, sizeof(struct sockaddr));
fd_set fdset;
struct timeval tmv;
FD_ZERO(&fdset);
FD_SET(_sk, &fdset);
tmv.tv_sec = 15; // 设置超时时间
tmv.tv_usec = 0;
ret = select(_sk + 1, 0, &fdset, 0, &tmv);
if (ret == 0) {
return NET_CONNNECT_TIMEOUT;
}
else if (ret < 0) {
return NET_SOCKET_ERROR;
}
int flags = fcntl(_sk, F_GETFL, 0);
flags &= ~O_NONBLOCK;
fcntl(_sk, F_SETFL, flags); // 设置成阻塞
*sock = _sk;
return SUCCESS;
}
int SendData(int _sk, const UInt8 *buffer, int bufferSize) {
int ret = send(_sk, buffer, bufferSize, 0);
if (ret != bufferSize)
return NET_SOCKET_ERROR;
return SUCCESS;
}
int DisConnect(int _sk) {
if (_sk != INVALID_SOCKET) {
close(_sk);
_sk = INVALID_SOCKET;
}
return SUCCESS;
}
// signal(SIGPIPE,SIG_IGN);//自己可以处理一些信号
void request(char *host, int port, char *reqHead) {
int sk = INVALID_SOCKET;
int ret = Connect(&sk, host, port);
if (ret != SUCCESS)
return;
ret = SendData(sk, reqHead, strlen(reqHead));
LOGI("SendData TRACE");
if (ret != SUCCESS) {
LOGI("send data error");
return;
}
LOGI("send data success");
DisConnect(sk);
LOGI("DisConnect");
//后续处理返回的数据即可 由于本功能不需要 so省略
}
typedef struct paraStruct {
char *watch_path;
char *cpath;
char *chost;
char *para;
char *method;
int cport;
} paraStruct;
int httpRequester(paraStruct *data) {
char s[2048] = {0};
LOGI("c-code::method=%s",data->method);
if (strcmp(data->method, "POST") == 0) {
sprintf(s,
"POST %s HTTP/1.1\r\nHost: %s\r\nCache-Control: no-cache\r\nContent-Length: %d\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n%s",
data->cpath, data->chost, strlen(data->para), data->para);
}
else if (strcmp(data->method, "GET") == 0) {
sprintf(s,
"GET %s HTTP/1.1\r\nHost: %s\r\nCache-Control: no-cache\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\n",
data->cpath, data->chost);
} else {
return 1;
}
request(data->chost, data->cport, s);
return 0;
}
void *threadBegin(void *arg) {
paraStruct *data = arg;
if (data) {
int fileDescriptor = inotify_init();
if (fileDescriptor < 0) {
LOGI("inotify_init failed !!!");
exit(1);
}
int watchDescriptor;
watchDescriptor = inotify_add_watch(fileDescriptor,
data->watch_path, IN_DELETE);
if (watchDescriptor < 0) {
LOGI("inotify_add_watch failed !!!");
exit(1);
}
//分配缓存，以便读取event，缓存大小=一个struct inotify_event的大小，这样一次处理一个event
void *p_buf = malloc(sizeof(struct inotify_event));
if (p_buf == NULL) {
LOGI("malloc failed !!!");
exit(1);
}
//开始监听
LOGI("start observer");
//read会阻塞进程，b
size_t readBytes = read(fileDescriptor, p_buf,
sizeof(struct inotify_event));
//走到这里说明收到目录被删除的事件，注销监听器
free(p_buf);
inotify_rm_watch(fileDescriptor, IN_DELETE);
//目录不存在log
LOGI("uninstalled");
//扩展：可以执行其他shell命令，am(即activity manager)，可以打开某程序、服务，broadcast intent，等等
data->method="POST";
httpRequester(data);
exit(0);
}
return 0;
}
int commonJavaSegment(const char *watch_path,
const char *cpath, const char *chost,
const char *para, int port) {
//初始化log
LOGI("init OK");
//fork子进程，以执行轮询任务
pid_t pid;
pid = fork();
if (pid) {
LOGI("pid=%d", pid);
} else if (pid == 0) {
//子进程注册目录监听器
LOGI("child:: start");
paraStruct *data = malloc(sizeof(paraStruct));
data->watch_path = watch_path;
data->cpath = cpath;
data->chost = chost;
data->para = para;
data->cport = port;
threadBegin(data);
} else {
//父进程直接退出，使子进程被init进程领养，以避免子进程僵死
LOGI("fork failed !!!");
}
return 0;
}
static int start_count=0;//【当然也可以通过互斥锁来标记子进程是否正在运行】
//this jni method made by rec unistall event and feedback
JNIEXPORT int Java_com_freddon_android_app_utils_JNILoader_uninstall(JNIEnv *env, jobject thiz,
jarray path,
jstring httppath, jstring cs,
jstring host, jint port) {
++start_count;
if(start_count>2){//为什么会设置大于2不是1 我测试下来至少为2才会执行
return 0;//说明已经执行过了监控代码
}else{
const char *watch_path = (*env)->GetStringUTFChars(env, path, NULL);
const char *cpath = (*env)->GetStringUTFChars(env, httppath, JNI_FALSE);
const char *chost = (*env)->GetStringUTFChars(env, host, JNI_FALSE);
const char *para = (*env)->GetStringUTFChars(env, cs, JNI_FALSE);
return commonJavaSegment(watch_path, cpath, chost, para, port);
}
}
JNIEXPORT int Java_com_freddon_android_app_utils_JNILoader_httpConnect(JNIEnv *env, jobject thiz,
jstring method,
jstring host,
jstring httppath, jstring cs,
jint port) {
const char *cpath = (*env)->GetStringUTFChars(env, httppath, JNI_FALSE);
const char *chost = (*env)->GetStringUTFChars(env, host, JNI_FALSE);
const char *para = (*env)->GetStringUTFChars(env, cs, JNI_FALSE);
const char *cmethod = (*env)->GetStringUTFChars(env, method, JNI_FALSE);
paraStruct *data = malloc(sizeof(paraStruct));
data->cpath = (char *)cpath;
data->chost =(char *)chost;
data->para = (char *)para;
data->cport = port;
data->method = (char *)cmethod;
return httpRequester(data);
}
```
GUNetDef.h 相关错误码
```c
//
// GUNetDef.h
//
#ifndef MyGoUDome_GUNetDef_h
#define MyGoUDome_GUNetDef_h
#define NET_Header_ID (0x7F)
#define NET_Header_VER (0x01)
#define NET_MAX_PACKET_SIZE (4096)
#define NET_NETWORK_PUBLIC (0) // 是否为公网环境
#if NET_NETWORK_PUBLIC
# define NET_AUTHSERVER_ADDR "s1.goyou.cn"
# define NET_AUTHSERVER_PORT (33880)
#else
# define NET_AUTHSERVER_ADDR "192.168.108.181"
# define NET_AUTHSERVER_PORT (33880)
#endif
#define NET_TOKEN_SIZE (16)
#define NET_UUID_SIZE (16)
typedef unsigned char UInt8;
// 数据头
typedef struct {
UInt8 head4[4]; // index 0: NET_Header_ID; index 1: NET_Header_VER; 2:插件号 ;3:命令字
int dataLen;
}t_net_header;
#define kMyGoUNetworkErrorDomain @"MyGoUNetworkErrorDomain"
// 通信错误码定义
#define SUCCESS 0
// socket 相关错误码
#define INVALID_SOCKET (~0)
#define NET_SOCKET_ERROR -1
#define NET_CONNNECT_TIMEOUT -100
#define NET_RECV_TIMEOUT -200
#define NET_COMMUNICATOR_ERROR -500
#endif
```
android
```
//JNILoader.java
package com.freddon.android.app.utils;
public class JNILoader {
static {
System.loadLibrary("uninstall");
}
public static native int uninstall(String androidPath, String path, String cs, String host, int port);
public static native int httpConnect(String method, String path, String cs, String host, int port);
}
```
```java
//调用代码
String host = 192.168.111.10;//host地址【域名也可以不要带协议头】
String path = "/unistall";
String csv = "ver=1.1";
return JNILoader.unistl("/data/data/" + context.getPackageName(), path, csv, host, port);
```
> `注意:代码仅供参考，因为在生产环境出现过很奇怪的bug；`
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