/usr/share/ada/adainclude/adasockets/sockets-multicast.adb is in libadasockets4-dev 1.8.10-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | -----------------------------------------------------------------------------
-- --
-- ADASOCKETS COMPONENTS --
-- --
-- S O C K E T S . M U L T I C A S T --
-- --
-- B o d y --
-- --
-- Copyright (C) 1998-2011 Samuel Tardieu <sam@rfc1149.net> --
-- Copyright (C) 1999-2003 Télécom ParisTech --
-- --
-- AdaSockets is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) --
-- any later version. AdaSockets 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 distributed --
-- with AdaSockets; see file COPYING. If not, write to the Free --
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA --
-- 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from --
-- this unit, or you link this unit with other files to produce an --
-- executable, this unit does not by itself cause the resulting --
-- executable to be covered by the GNU General Public License. This --
-- exception does not however invalidate any other reasons why the --
-- executable file might be covered by the GNU Public License. --
-- --
-- The main repository for this software is located at: --
-- http://www.rfc1149.net/devel/adasockets.html --
-- --
-- If you have any question, please use the issues tracker at: --
-- https://github.com/samueltardieu/adasockets/issues --
-- --
-----------------------------------------------------------------------------
with Ada.Exceptions; use Ada.Exceptions;
with Interfaces.C; use Interfaces.C;
with Sockets;
pragma Elaborate_All (Sockets);
with Sockets.Constants; use Sockets.Constants;
with Sockets.Naming; use Sockets.Naming;
with Sockets.Thin; use Sockets.Thin;
with Sockets.Types; use Sockets.Types;
with Sockets.Utils; use Sockets.Utils;
package body Sockets.Multicast is
use Ada.Streams;
procedure Setsockopt_Add_Membership is
new Customized_Setsockopt (IPPROTO_IP, IP_ADD_MEMBERSHIP, Ip_Mreq);
function Create_Multicast_Socket
(Group : String;
Port : Positive;
Local_Port : Natural;
TTL : Positive := 16;
Self_Loop : Boolean := True;
Local_If : String := "0.0.0.0")
return Multicast_Socket_FD;
-----------------------------
-- Create_Multicast_Socket --
-----------------------------
function Create_Multicast_Socket
(Group : String;
Port : Positive;
Local_Port : Natural;
TTL : Positive := 16;
Self_Loop : Boolean := True;
Local_If : String := "0.0.0.0")
return Multicast_Socket_FD
is
Result : Multicast_Socket_FD;
Mreq : aliased Ip_Mreq;
C_Self_Loop : Integer;
begin
Socket (Socket_FD (Result), PF_INET, SOCK_DGRAM);
if Self_Loop then
C_Self_Loop := 1;
else
C_Self_Loop := 0;
end if;
Setsockopt (Result, SOL_SOCKET, SO_REUSEADDR, 1);
pragma Warnings (Off); -- Statically determined
if Constants.So_Reuseport /= -1 then
Setsockopt (Result, SOL_SOCKET, SO_REUSEPORT, 1);
end if;
pragma Warnings (On);
Bind (Result, Local_Port);
Mreq.Imr_Multiaddr := To_In_Addr (Address_Of (Group));
Mreq.Imr_Interface := To_In_Addr (Address_Of (Local_If));
Setsockopt_Add_Membership (Result, Mreq);
Setsockopt (Result, IPPROTO_IP, IP_MULTICAST_TTL, TTL);
Setsockopt (Result, IPPROTO_IP, IP_MULTICAST_LOOP, C_Self_Loop);
Result.Target.Sin_Family := Constants.Af_Inet;
Result.Target.Sin_Port := Port_To_Network (unsigned_short (Port));
Result.Target.Sin_Addr := To_In_Addr (Address_Of (Group));
return Result;
end Create_Multicast_Socket;
-----------------------------
-- Create_Multicast_Socket --
-----------------------------
function Create_Multicast_Socket
(Group : String;
Port : Positive;
TTL : Positive := 16;
Self_Loop : Boolean := True;
Local_If : String := "0.0.0.0")
return Multicast_Socket_FD
is
begin
return Create_Multicast_Socket
(Group => Group,
Port => Port,
Local_Port => Port,
TTL => TTL,
Self_Loop => Self_Loop,
Local_If => Local_If);
end Create_Multicast_Socket;
-----------------------------
-- Create_Multicast_Socket --
-----------------------------
function Create_Multicast_Socket
(Group : String;
Port : Positive;
Local_Port : Natural;
TTL : Positive := 16;
Local_If : String := "0.0.0.0")
return Multicast_Socket_FD
is
begin
return Create_Multicast_Socket
(Group => Group,
Port => Port,
Local_Port => Local_Port,
TTL => TTL,
Self_Loop => False,
Local_If => Local_If);
end Create_Multicast_Socket;
----------
-- Send --
----------
procedure Send (Socket : Multicast_Socket_FD;
Data : Stream_Element_Array)
is
Sin : aliased Sockaddr_In := Socket.Target;
Index : Stream_Element_Offset := Data'First;
Rest : Stream_Element_Count := Data'Length;
Count : int;
begin
while Rest > 0 loop
Count := C_Sendto (Socket.FD,
Data (Index) 'Address,
int (Rest),
0,
Sin'Address,
Sin'Size / 8);
if Count < 0 then
Raise_With_Message ("Send failed");
elsif Count = 0 then
raise Connection_Closed;
end if;
Index := Index + Stream_Element_Count (Count);
Rest := Rest - Stream_Element_Count (Count);
end loop;
end Send;
------------
-- Socket --
------------
procedure Socket
(Sock : out Multicast_Socket_FD;
Domain : Socket_Domain := PF_INET;
Typ : Socket_Type := SOCK_STREAM)
is
begin
Raise_Exception (Program_Error'Identity,
"Use Create_Multicast_Socket instead");
end Socket;
end Sockets.Multicast;
|