1 /* 2 chronyd/chronyc - Programs for keeping computer clocks accurate. 3 4 ********************************************************************** 5 * Copyright (C) Richard P. Curnow 1997-2002 6 * Copyright (C) Miroslav Lichvar 2014 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of version 2 of the GNU General Public License as 10 * published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 ********************************************************************** 22 23 ======================================================================= 24 25 This is the header file for the NTP socket I/O bits. 26 27 */ 28 29 #ifndef GOT_NTP_IO_H 30 #define GOT_NTP_IO_H 31 32 #include "ntp.h" 33 #include "addressing.h" 34 #include "socket.h" 35 36 /* Function to initialise the module. */ 37 extern void NIO_Initialise(void); 38 39 /* Function to finalise the module */ 40 extern void NIO_Finalise(void); 41 42 /* Function to obtain a socket for sending client packets */ 43 extern int NIO_OpenClientSocket(NTP_Remote_Address *remote_addr); 44 45 /* Function to obtain a socket for sending server/peer packets */ 46 extern int NIO_OpenServerSocket(NTP_Remote_Address *remote_addr); 47 48 /* Function to close a socket returned by NIO_OpenClientSocket() */ 49 extern void NIO_CloseClientSocket(int sock_fd); 50 51 /* Function to close a socket returned by NIO_OpenServerSocket() */ 52 extern void NIO_CloseServerSocket(int sock_fd); 53 54 /* Function to check if socket is a server socket */ 55 extern int NIO_IsServerSocket(int sock_fd); 56 57 /* Function to check if a server socket is currently open */ 58 extern int NIO_IsServerSocketOpen(void); 59 60 /* Function to check if client packets can be sent to a server */ 61 extern int NIO_IsServerConnectable(NTP_Remote_Address *remote_addr); 62 63 /* Function to unwrap an NTP message from non-native transport (e.g. PTP) */ 64 extern int NIO_UnwrapMessage(SCK_Message *message, int sock_fd); 65 66 /* Function to transmit a packet */ 67 extern int NIO_SendPacket(NTP_Packet *packet, NTP_Remote_Address *remote_addr, 68 NTP_Local_Address *local_addr, int length, int process_tx); 69 70 #endif /* GOT_NTP_IO_H */ 71