RetroShare/libretroshare/src/tcponudp/tou.h
Gioacchino Mazzurco d00d0816ff
Use only BIO_METHOD pointer in openssl >= 1.1.0
The type declaration is hidden so we can't declare variable but only
pointers
Fix compilation on Android
2018-11-05 23:39:10 +01:00

138 lines
5.1 KiB
C

/*******************************************************************************
* libretroshare/src/tcponudp: tou.h *
* *
* libretroshare: retroshare core library *
* *
* Copyright 2004-2006 by Robert Fernie <retroshare@lunamutt.com> *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program. If not, see <https://www.gnu.org/licenses/>. *
* *
*******************************************************************************/
#ifndef TOU_C_HEADER_H
#define TOU_C_HEADER_H
/* get OS-specific definitions for:
* struct sockaddr, socklen_t, ssize_t
*/
#ifndef WINDOWS_SYS
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#else
#include <stdint.h>
#include <winsock2.h>
#include <stdio.h>
// #include <stdint.h>
typedef int socklen_t;
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* standard C interface (as Unix-like as possible)
* for the tou (Tcp On Udp) library
*/
/*
* Init:
* The TOU library no longer references any UdpStack items.
* instead, two arrays should be passed to the init function.
* int tou_init( (void **) UdpSubReceiver **udpRecvers, int *udpType, int nUdps);
*
* The UdpSubReceivers should be derived classes, with corresponding types:
* UdpPeerReceiver TOU_RECEIVER_TYPE_UDPPEER
* UdpRelayReceiver TOU_RECEIVER_TYPE_UDPRELAY
*
*/
#define MAX_TOU_RECEIVERS 16
#define TOU_RECEIVER_TYPE_NONE 0x0000
#define TOU_RECEIVER_TYPE_UDPPEER 0x0001
#define TOU_RECEIVER_TYPE_UDPRELAY 0x0002
// hack to avoid classes in C code. (MacOSX complaining)
int tou_init(void **udpSubRecvs, int *udpTypes, int nUdps);
/* Connections are as similar to UNIX as possible
* (1) create a socket: tou_socket() this reserves a socket id.
* (2) connect: active: tou_connect() or passive: tou_listenfor().
* (3) use as a normal socket.
*
* connect() now has a conn_period parameter - this is the
* estimate (in seconds) of how slowly the connection should proceed.
*
* tou_bind() is not valid. tou_init performs this role.
* tou_listen() is not valid. (must listen for a specific address) use tou_listenfor() instead.
* tou_accept() can still be used.
*
****** THE ABOVE IS BECOMING LESS TRUE ********
*
* I have now added Multiple type of TOU Connections (Proxy, Relay),
* and multiple UDP Receivers (meaning you can use different ports too).
*
* The UDP receivers must be specified at startup (new tou_init())
* and the Receiver, and Type of connection must be specified when you
* open the socket.
*
* The parameters to tou_socket, therefore mean something!
* some extra checking has been put in to try and catch bad usage.
*/
/* creation/connections */
int tou_socket(uint32_t domain, uint32_t type, int protocol);
int tou_bind(int sockfd, const struct sockaddr *my_addr, socklen_t addrlen); /* null op now */
int tou_listen(int sockfd, int backlog); /* null op now */
int tou_connect(int sockfd, const struct sockaddr *serv_addr,
socklen_t addrlen, uint32_t conn_period);
int tou_accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
/* non-standard bonuses */
int tou_connected(int sockfd);
int tou_listenfor(int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen);
/* UNIX interface: minimum for the SSL BIO interface */
ssize_t tou_read(int sockfd, void *buf, size_t count);
ssize_t tou_write(int sockfd, const void *buf, size_t count);
int tou_close(int sockfd);
/* non-standard */
int tou_errno(int sockfd);
int tou_clear_error(int sockfd);
/* check stream */
int tou_maxread(int sockfd);
int tou_maxwrite(int sockfd);
#ifdef __cplusplus
}
typedef struct sockaddr_in sockaddr_in;
/// for relay connections
int tou_connect_via_relay( int sockfd, const sockaddr_in& own_addr,
const sockaddr_in& proxy_addr,
const sockaddr_in& dest_addr );
#endif
#endif