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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef _INTERCEPT_H
#define _INTERCEPT_H 1
#include <sys/socket.h>
#define IDX_PID 0
#define IDX_TID sizeof(pid_t)
#define IDX_COUNT IDX_TID + sizeof(pid_t)
#define IDX_TIME IDX_COUNT + sizeof(int)
#define IDX_PAYLOAD IDX_TIME + 20 /* 20 being the length of the timestamp string */
#define BUF_SZ 256
#define PAYLOAD_SZ 223 /* BUF_SZ-IDX_PAYLOAD */
#define ERR_OK 0
/* Userland RPC codes */
#define RPC_UNDEFINED 0
#define RPC_CONNECT 1
#define RPC_CONNECT_SOCKARG 2
#define RPC_CLOSE 3
#define RPC_READ 4
#define RPC_WRITE 5
#define RPC_BIND 6
#define RPC_ACCEPT 7
#define RPC_LISTEN 8
#define RPC_SOCKET 9
#define RPC_SHUTDOWN 10
#define RPC_GETSOCKNAME 11
/* Administration RPC codes */
#define RPC_MAP 20 /* Give the service the value we "see" for the new buffer fd */
#define RPC_MAP_REQ 21 /* A call to determine whether an fd is mapped to the service */
#define RPC_RETVAL 22 /* not RPC per se, but something we should codify */
#define RPC_KILL_INTERCEPT 23 /* Tells the service we need to shut down all connections */
/* Connection statuses */
#define UNSTARTED 0
#define CONNECTING 1
#define CONNECTED 2
#define SENDING 3
#define RECEIVING 4
#define SENTV4REQ 5
#define GOTV4REQ 6
#define SENTV5METHOD 7
#define GOTV5METHOD 8
#define SENTV5AUTH 9
#define GOTV5AUTH 10
#define SENTV5CONNECT 11
#define GOTV5CONNECT 12
#define DONE 13
#define FAILED 14
/* Flags to indicate what events a
socket was select()ed for */
#define READ (POLLIN|POLLRDNORM)
#define WRITE (POLLOUT|POLLWRNORM|POLLWRBAND)
#define EXCEPT (POLLRDBAND|POLLPRI)
#define READWRITE (READ|WRITE)
#define READWRITEEXCEPT (READ|WRITE|EXCEPT)
/* for AF_UNIX sockets */
#define MAX_PATH_NAME_SIZE 64
/* bind */
#define BIND_SIG int sockfd, const struct sockaddr *addr, socklen_t addrlen
struct bind_st
{
int sockfd;
struct sockaddr_storage addr;
socklen_t addrlen;
int __tid;
};
/* connect */
#define CONNECT_SIG int __fd, const struct sockaddr * __addr, socklen_t __len
struct connect_st
{
int __fd;
struct sockaddr_storage __addr;
socklen_t __len;
int __tid;
};
/* close */
#define CLOSE_SIG int fd
struct close_st
{
int fd;
};
/* read */
#define DEFAULT_READ_BUFFER_SIZE 1024 * 63
/* read buffer sizes (on test machine) min: 4096 default: 87380 max:6147872 */
#define READ_SIG int __fd, void *__buf, size_t __nbytes
struct read_st
{
int fd;
size_t count;
unsigned char buf[DEFAULT_READ_BUFFER_SIZE];
};
/* write */
#define DEFAULT_WRITE_BUFFER_SIZE 1024 * 63
/* write buffer sizes (on test machine) min: 4096 default: 16384 max:4194304 */
#define WRITE_SIG int __fd, const void *__buf, size_t __n
struct write_st
{
int fd;
size_t count;
char buf[DEFAULT_WRITE_BUFFER_SIZE];
};
#define LISTEN_SIG int sockfd, int backlog
struct listen_st
{
int sockfd;
int backlog;
int __tid;
};
#define SOCKET_SIG int socket_family, int socket_type, int protocol
struct socket_st
{
int socket_family;
int socket_type;
int protocol;
int __tid;
};
#define ACCEPT4_SIG int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags
#define ACCEPT_SIG int sockfd, struct sockaddr *addr, socklen_t *addrlen
struct accept_st
{
int sockfd;
struct sockaddr_storage addr;
socklen_t addrlen;
int __tid;
};
#define SHUTDOWN_SIG int socket, int how
struct shutdown_st
{
int socket;
int how;
};
struct getsockname_st
{
int sockfd;
struct sockaddr_storage addr;
socklen_t addrlen;
};
#define CONNECT_SOCKARG struct sockaddr *
#define IOCTL_SIG int __fd, unsigned long int __request, ...
#define FCNTL_SIG int __fd, int __cmd, ...
#define DAEMON_SIG int nochdir, int noclose
#define SETSOCKOPT_SIG int socket, int level, int option_name, const void *option_value, socklen_t option_len
#define GETSOCKOPT_SIG int sockfd, int level, int optname, void *optval, socklen_t *optlen
#define SYSCALL_SIG long number, ...
#define CLONE_SIG int (*fn)(void *), void *child_stack, int flags, void *arg, ...
#define GETSOCKNAME_SIG int sockfd, struct sockaddr *addr, socklen_t *addrlen
#define DUP2_SIG int oldfd, int newfd
#define DUP3_SIG int oldfd, int newfd, int flags
#endif
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