无法连接到本地本地套接字在Android 5.1 [英] Cannot connect to native local socket on android 5.1
问题描述
我已经commad行工具,它发送广播,并等待结果。
I have commad-line tool, which sends broadcast and wait result.
服务器code(省略处理错误):
Server code (error handling omitted):
int makeAddr(const char* name, struct sockaddr_un* pAddr, socklen_t* pSockLen)
{
int nameLen = strlen(name);
pAddr->sun_path[0] = '\0';
strcpy(pAddr->sun_path+1, name);
pAddr->sun_family = AF_LOCAL;
*pSockLen = 1 + nameLen + offsetof(struct sockaddr_un, sun_path);
return 0;
}
int main(int argc, char* argv[])
{
//...
// Create socket in abstract namespace
struct sockaddr_un sockAddr = {0};
socklen_t sockLen;
makeAddr("SOCKET_NAME", &sockAddr, &sockLen);
int serverFd = socket(AF_LOCAL, SOCK_STREAM, PF_UNIX));
bind(serverFd, (const struct sockaddr*) &sockAddr, sockLen);
listen(serverFd, 5);
//set socket non-blocking
int flags = fcntl(serverFd, F_GETFL, 0);
fcntl(serverFd, F_SETFL, flags | O_NONBLOCK);
pollfd pollFd = {0};
pollFd.fd = serverFd;
pollFd.events = POLLIN | POLLRDHUP;
// Send brodcast
system("am broadcast ...");
for(;;)
{
// Wait result
int pollResult = poll(&pollFd, 1, timeout);
// Process result
Java客户端code:
Java client code:
public class CommandReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
LocalSocket socket = new LocalSocket();
LocalSocketAddress address = new LocalSocketAddress("SOCKET_NAME", LocalSocketAddress.Namespace.ABSTRACT);
socket.connect(address);
// Do something and send result asynchronously
它所有的工作在Android 5.1之前
It all works on android prior 5.1.
在Android 5.1连接()抛出异常:
On android 5.1 connect() throws exception:
java.io.IOException异常:权限被拒绝。
java.io.IOException: Permission denied
在android.net.LocalSocketImpl.connectLocal(本机方法)
at android.net.LocalSocketImpl.connectLocal(Native Method)
在android.net.LocalSocketImpl.connect(LocalSocketImpl.java:290)
at android.net.LocalSocketImpl.connect(LocalSocketImpl.java:290)
在android.net.LocalSocket.connect(LocalSocket.java:130)
at android.net.LocalSocket.connect(LocalSocket.java:130)
在日志中出现错误:
九月7日至27日:56:08.179:W:类型= 1400g审计(0.0:3675):AVC:否认{} connectto为path=00636F6D2E6B6173706572736B792E6B617368656C6C2E534F434B45542D36313838363731373231343337393833373637 scontext = U:R:untrusted_app:S0 tcontext = U:R:外壳:S0 = tclass许可unix_stream_socket = 0
07-27 09:56:08.179: W: type=1400 audit(0.0:3675): avc: denied { connectto } for path=00636F6D2E6B6173706572736B792E6B617368656C6C2E534F434B45542D36313838363731373231343337393833373637 scontext=u:r:untrusted_app:s0 tcontext=u:r:shell:s0 tclass=unix_stream_socket permissive=0
我找到了相对的android修复:
https://android.googlesource.com/device/moto/shamu/+/b2db40f
I've found relative android fix: https://android.googlesource.com/device/moto/shamu/+/b2db40f
因此,它不会再由于Android 5.1的工作?
我能做些什么(也许设置权限以某种方式)?
或者有另一种机制发送从本地命令行工具的数据,并等待结果呢?
So, it will not work anymore since android 5.1? What can I do (maybe set permission somehow)? Or is there another mechanism to send data from native command-line tool and wait result?
推荐答案
使用管道,而不是插座:
O_RDWR与民调命名管道()
Use pipes instead of socket: O_RDWR on named pipes with poll()
在java进程创建管道:
Create pipe in java process:
mkfifo(cpath, 0);
chmod(cpath, S_IRWXU|S_IROTH|S_IRGRP);
在本机进程打开管道:
int serverFd = open(PIPE_NAME, O_RDONLY | O_NONBLOCK);
pollfd pollFd = {0};
pollFd.fd = serverFd.get();
pollFd.events = POLLIN | POLLRDHUP;
// send command
....
for(;;)
{
int pollResult = poll(&pollFd, 1, timeout);
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