[Android]通过JNI实现卸载自身App后台发送Http请求~

来源：互联网发布：最好的网络营销软件编辑：程序博客网时间：2024/06/08 16:04

摘要: 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 毕竟这个行为已经跟数字公司一样不人道了
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
LOCAL_PATH := (callmy−dir)include(CLEAR_VARS)
LOCAL_MODULE:=uninstall
LOCAL_SRC_FILES:=uninstall.c

LOCAL_C_INCLUDES:= (LOCALPATH)/includeLOCALSHAREDLIBRARIES:=libloglibcutilsLOCALLDLIBS+=−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）

// uninstall.c
// Created by Fred on 16/4/19.
//
// email:gsiner@live.com

include

include “GUNetDef.h”

define LOGI(…) android_log_print(ANDROID_LOG_INFO, “fred”, __VA_ARGS)

static char c_TAG[] = “onEvent”;

define BUFFER_SIZE 2

/**
* 感谢大风提供的三个发送或处理请求的方法
* @edited fred
*/

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logLOGI("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);
}
}

/**
* C语言的Http请求方法【此方法备用】
* @author fred
*/
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

//
// 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;

/**
* Created by fred on 16/4/16.
*/
public class JNILoader {

static {    System.loadLibrary("uninstall");}/** * 【Native】核心方法 只支持POST 可以自己更改 [不处理响应]【请处理异常】 * * @param path 包名data/data 的包路径 * @param path * @param cs * @param host * @param port * @return */public static native int uninstall(String androidPath, String path, String cs, String host, int port);/** * 【Native】发送http请求 [不处理响应]【请处理异常】 * * @param method 请求方式 大写 * @param host   主机地址 域名或ip [不需要携带协议名] * @param path   请求路径 /开头 * @param cs     携带参数 仅POST使用 * @param port   端口 目前固定 80 */public static native int httpConnect(String method, String path, String cs, String host, int port);

}
调用代码

String host = 192.168.11.10;//host地址【域名也可以不要带协议头】
String path = “/unistall”;
String cs = “ver=1.1”;
return JNILoader.unistl(“/data/data/” + context.getPackageName(), path, cs, host, port);

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