104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
|
|
* Copyright (C) 2006 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef __CUTILS_SOCKETS_H
|
|
#define __CUTILS_SOCKETS_H
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdbool.h>
|
|
|
|
#if defined(_WIN32)
|
|
#include <winsock2.h>
|
|
typedef int socklen_t;
|
|
#else
|
|
#include <sys/socket.h>
|
|
#endif
|
|
|
|
#define ANDROID_SOCKET_ENV_PREFIX "ANDROID_SOCKET_"
|
|
#define ANDROID_SOCKET_DIR "/dev/socket"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* android_get_control_socket - simple helper function to get the file
|
|
* descriptor of our init-managed Unix domain socket. `name' is the name of the
|
|
* socket, as given in init.rc. Returns -1 on error.
|
|
*
|
|
* This is inline and not in libcutils proper because we want to use this in
|
|
* third-party daemons with minimal modification.
|
|
*/
|
|
static inline int android_get_control_socket(const char *name)
|
|
{
|
|
char key[64];
|
|
snprintf(key, sizeof(key), ANDROID_SOCKET_ENV_PREFIX "%s", name);
|
|
|
|
const char* val = getenv(key);
|
|
if (!val) {
|
|
return -1;
|
|
}
|
|
|
|
errno = 0;
|
|
int fd = strtol(val, NULL, 10);
|
|
if (errno) {
|
|
return -1;
|
|
}
|
|
|
|
return fd;
|
|
}
|
|
|
|
/*
|
|
* See also android.os.LocalSocketAddress.Namespace
|
|
*/
|
|
// Linux "abstract" (non-filesystem) namespace
|
|
#define ANDROID_SOCKET_NAMESPACE_ABSTRACT 0
|
|
// Android "reserved" (/dev/socket) namespace
|
|
#define ANDROID_SOCKET_NAMESPACE_RESERVED 1
|
|
// Normal filesystem namespace
|
|
#define ANDROID_SOCKET_NAMESPACE_FILESYSTEM 2
|
|
|
|
extern int socket_loopback_client(int port, int type);
|
|
extern int socket_network_client(const char *host, int port, int type);
|
|
extern int socket_network_client_timeout(const char *host, int port, int type,
|
|
int timeout, int* getaddrinfo_error);
|
|
extern int socket_loopback_server(int port, int type);
|
|
extern int socket_local_server(const char *name, int namespaceId, int type);
|
|
extern int socket_local_server_bind(int s, const char *name, int namespaceId);
|
|
extern int socket_local_client_connect(int fd,
|
|
const char *name, int namespaceId, int type);
|
|
extern int socket_local_client(const char *name, int namespaceId, int type);
|
|
extern int socket_inaddr_any_server(int port, int type);
|
|
|
|
/*
|
|
* socket_peer_is_trusted - Takes a socket which is presumed to be a
|
|
* connected local socket (e.g. AF_LOCAL) and returns whether the peer
|
|
* (the userid that owns the process on the other end of that socket)
|
|
* is one of the two trusted userids, root or shell.
|
|
*
|
|
* Note: This only works as advertised on the Android OS and always
|
|
* just returns true when called on other operating systems.
|
|
*/
|
|
extern bool socket_peer_is_trusted(int fd);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __CUTILS_SOCKETS_H */
|