hackedteam/vector-exploit

/*
 * 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 <stdlib.h>
#include <string.h>

#ifdef HAVE_WINSOCK
#include <winsock2.h>
typedef int  socklen_t;
#elif HAVE_SYS_SOCKET_H
#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] = ANDROID_SOCKET_ENV_PREFIX;
    const char *val;
    int fd;

    /* build our environment variable, counting cycles like a wolf ... */
#if HAVE_STRLCPY
    strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1,
        name,
        sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX));
#else/* for the host, which may lack the almightly strncpy ... */
    strncpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1,
        name,
        sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX));
    key[sizeof(key)-1] = '\0';
#endif

    val = getenv(key);
    if (!val)
      return -1;

    errno = 0;
    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_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);
    
#ifdef __cplusplus
}
#endif

#endif /* __CUTILS_SOCKETS_H */