/usr/share/ada/adainclude/anet/anet-sockets-inet.adb is in libanet1-dev 0.3.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Copyright (C) 2012-2013 secunet Security Networks AG
-- Copyright (C) 2012-2014 Reto Buerki <reet@codelabs.ch>
-- Copyright (C) 2012-2014 Adrian-Ken Rueegsegger <ken@codelabs.ch>
--
-- 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 2 of the License, or (at your
-- option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
--
-- 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.
--
-- 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.
--
with Anet.Errno;
with Anet.Constants;
with Anet.OS_Constants;
with Anet.Sockets.Thin.Inet;
with Anet.Net_Ifaces;
with Anet.Sockets.Inet.Iface;
package body Anet.Sockets.Inet is
package C renames Interfaces.C;
procedure Receive
(Socket : C.int;
Src : out Thin.Inet.Sockaddr_In_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset);
-- Receive data from given inet socket. This procedure blocks until data
-- has been received. Last is the index value such that Item (Last) is the
-- last character assigned. An exception is raised if a socket error
-- occurs or if no address information could be retrieved from the
-- underlying protocol.
-------------------------------------------------------------------------
procedure Accept_Connection
(Socket : TCPv4_Socket_Type;
New_Socket : out TCPv4_Socket_Type)
is
Res : C.int;
Sock : Thin.Inet.Sockaddr_In_Type
(Family => Socket_Families.Family_Inet);
Len : aliased C.int := Sock'Size / 8;
begin
New_Socket.Sock_FD := -1;
Res := Thin.C_Accept (S => Socket.Sock_FD,
Name => Sock'Address,
Namelen => Len'Access);
case Check_Accept (Result => Res)
is
when Accept_Op_Aborted => return;
when Accept_Op_Error =>
raise Socket_Error with "Unable to accept connection on TCPv4 "
& "socket - " & Errno.Get_Errno_String;
when Accept_Op_Ok =>
New_Socket.Sock_FD := Res;
end case;
end Accept_Connection;
-------------------------------------------------------------------------
procedure Accept_Connection
(Socket : TCPv6_Socket_Type;
New_Socket : out TCPv6_Socket_Type)
is
Res : C.int;
Sock : Thin.Inet.Sockaddr_In_Type
(Family => Socket_Families.Family_Inet6);
Len : aliased C.int := Sock'Size / 8;
begin
New_Socket.Sock_FD := -1;
Res := Thin.C_Accept (S => Socket.Sock_FD,
Name => Sock'Address,
Namelen => Len'Access);
case Check_Accept (Result => Res)
is
when Accept_Op_Aborted => return;
when Accept_Op_Error =>
raise Socket_Error with "Unable to accept connection on TCPv6 "
& "socket - " & Errno.Get_Errno_String;
when Accept_Op_Ok =>
New_Socket.Sock_FD := Res;
end case;
end Accept_Connection;
-------------------------------------------------------------------------
procedure Bind
(Socket : in out Inet_Socket_Type;
Iface : Types.Iface_Name_Type)
is
begin
Inet.Iface.Bind (Socket => Socket,
Iface => Iface);
end Bind;
-------------------------------------------------------------------------
procedure Bind
(Socket : in out IPv4_Socket_Type;
Address : IPv4_Addr_Type := Any_Addr;
Port : Port_Type)
is
Sockaddr : constant Thin.Inet.Sockaddr_In_Type
:= Thin.Inet.Create_Inet4 (Address => Address,
Port => Port);
begin
Socket.Set_Socket_Option
(Option => Reuse_Address,
Value => True);
Errno.Check_Or_Raise
(Result => Thin.C_Bind
(S => Socket.Sock_FD,
Name => Sockaddr'Address,
Namelen => Sockaddr'Size / 8),
Message => "Unable to bind IPv4 socket to " & To_String
(Address => Address) & "," & Port'Img);
end Bind;
-------------------------------------------------------------------------
procedure Bind
(Socket : in out IPv6_Socket_Type;
Address : IPv6_Addr_Type := Any_Addr_V6;
Port : Port_Type)
is
Sockaddr : constant Thin.Inet.Sockaddr_In_Type
:= Thin.Inet.Create_Inet6 (Address => Address,
Port => Port);
begin
Socket.Set_Socket_Option
(Option => Reuse_Address,
Value => True);
Errno.Check_Or_Raise
(Result => Thin.C_Bind
(S => Socket.Sock_FD,
Name => Sockaddr'Address,
Namelen => Sockaddr'Size / 8),
Message => "Unable to bind IPv6 socket to " & To_String
(Address => Address) & "," & Port'Img);
end Bind;
-------------------------------------------------------------------------
procedure Connect
(Socket : in out TCPv4_Socket_Type;
Address : IPv4_Addr_Type;
Port : Port_Type)
is
Dst : constant Thin.Inet.Sockaddr_In_Type := Thin.Inet.Create_Inet4
(Address => Address,
Port => Port);
begin
Errno.Check_Or_Raise
(Result => Thin.C_Connect
(S => Socket.Sock_FD,
Name => Dst'Address,
Namelen => Dst'Size / 8),
Message => "Unable to connect socket to address " & To_String
(Address => Address) & " (" & Port'Img & " )");
end Connect;
-------------------------------------------------------------------------
procedure Connect
(Socket : in out TCPv6_Socket_Type;
Address : IPv6_Addr_Type;
Port : Port_Type)
is
Dst : constant Thin.Inet.Sockaddr_In_Type := Thin.Inet.Create_Inet6
(Address => Address,
Port => Port);
begin
Errno.Check_Or_Raise
(Result => Thin.C_Connect
(S => Socket.Sock_FD,
Name => Dst'Address,
Namelen => Dst'Size / 8),
Message => "Unable to connect socket to address " & To_String
(Address => Address) & " (" & Port'Img & " )");
end Connect;
-------------------------------------------------------------------------
procedure Init (Socket : in out UDPv4_Socket_Type)
is
begin
Init (Socket => Socket,
Family => Socket_Families.Family_Inet,
Mode => Datagram_Socket);
end Init;
-------------------------------------------------------------------------
procedure Init (Socket : in out TCPv4_Socket_Type)
is
begin
Init (Socket => Socket,
Family => Socket_Families.Family_Inet,
Mode => Stream_Socket);
end Init;
-------------------------------------------------------------------------
procedure Init (Socket : in out UDPv6_Socket_Type)
is
begin
Init (Socket => Socket,
Family => Socket_Families.Family_Inet6,
Mode => Datagram_Socket);
end Init;
-------------------------------------------------------------------------
procedure Init (Socket : in out TCPv6_Socket_Type)
is
begin
Init (Socket => Socket,
Family => Socket_Families.Family_Inet6,
Mode => Stream_Socket);
end Init;
-------------------------------------------------------------------------
procedure Join_Multicast_Group
(Socket : UDPv4_Socket_Type;
Group : IPv4_Addr_Type;
Iface : Types.Iface_Name_Type := "")
is
use type C.unsigned_short;
Mreq : Thin.IPv4_Mreq_Type;
Iface_Addr : IPv4_Addr_Type := Any_Addr;
begin
if Iface'Length > 0 then
Iface_Addr := Net_Ifaces.Get_Iface_IP (Name => Iface);
end if;
Mreq.Imr_Multiaddr := Group;
Mreq.Imr_Interface := Iface_Addr;
Errno.Check_Or_Raise
(Result => Thin.C_Setsockopt
(S => Socket.Sock_FD,
Level => Constants.Sys.IPPROTO_IP,
Optname => Constants.Sys.IP_ADD_MEMBERSHIP,
Optval => Mreq'Address,
Optlen => Mreq'Size / 8),
Message => "Unable to join multicast group " & To_String
(Address => Group));
end Join_Multicast_Group;
-------------------------------------------------------------------------
procedure Join_Multicast_Group
(Socket : UDPv6_Socket_Type;
Group : IPv6_Addr_Type;
Iface : Types.Iface_Name_Type := "")
is
use type C.unsigned_short;
Mreq6 : Thin.IPv6_Mreq_Type;
Iface_Idx : Natural := 0;
begin
if Iface'Length > 0 then
Iface_Idx := Net_Ifaces.Get_Iface_Index (Name => Iface);
end if;
Mreq6.IPv6mr_Multiaddr := Group;
Mreq6.IPv6mr_Interface := C.unsigned (Iface_Idx);
Errno.Check_Or_Raise
(Result => Thin.C_Setsockopt
(S => Socket.Sock_FD,
Level => Constants.IPPROTO_IPV6,
Optname => OS_Constants.IPV6_ADD_MEMBERSHIP,
Optval => Mreq6'Address,
Optlen => Mreq6'Size / 8),
Message => "Unable to join multicast group " & To_String
(Address => Group));
end Join_Multicast_Group;
-------------------------------------------------------------------------
procedure Multicast_Set_Sending_Interface
(Socket : UDPv4_Socket_Type;
Iface_Addr : IPv4_Addr_Type)
is
begin
Errno.Check_Or_Raise
(Result => Thin.C_Setsockopt
(S => Socket.Sock_FD,
Level => Constants.Sys.IPPROTO_IP,
Optname => Constants.Sys.IP_MULTICAST_IF,
Optval => Iface_Addr'Address,
Optlen => Iface_Addr'Length),
Message => "Unable to set sending multicast interface " &
"with address " & To_String (Iface_Addr) & "'");
end Multicast_Set_Sending_Interface;
-------------------------------------------------------------------------
procedure Multicast_Set_Sending_Interface
(Socket : UDPv6_Socket_Type;
Iface : Types.Iface_Name_Type)
is
Iface_Idx : constant Natural
:= Net_Ifaces.Get_Iface_Index (Name => Iface);
begin
Errno.Check_Or_Raise
(Result => Thin.C_Setsockopt
(S => Socket.Sock_FD,
Level => Constants.IPPROTO_IPV6,
Optname => OS_Constants.IPV6_MULTICAST_IF,
Optval => Iface_Idx'Address,
Optlen => Iface_Idx'Size / 8),
Message => "Unable set sending multicast interface to " &
String (Iface));
end Multicast_Set_Sending_Interface;
-------------------------------------------------------------------------
procedure Receive
(Socket : C.int;
Src : out Thin.Inet.Sockaddr_In_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
use type Ada.Streams.Stream_Element_Offset;
Res : C.long;
Len : aliased C.int := Src'Size / 8;
begin
Last := 0;
Res := Thin.C_Recvfrom (S => Socket,
Msg => Item'Address,
Len => Item'Length,
Flags => 0,
From => Src'Address,
Fromlen => Len'Access);
case Check_Receive (Result => Res)
is
when Recv_Op_Orderly_Shutdown | Recv_Op_Aborted => return;
when Recv_Op_Error =>
raise Socket_Error with "Error receiving data from inet socket: "
& Errno.Get_Errno_String;
when Recv_Op_Ok =>
if Len = 0 then
raise Socket_Error with "No address information received";
end if;
Last := Item'First + Ada.Streams.Stream_Element_Offset (Res - 1);
end case;
end Receive;
-------------------------------------------------------------------------
procedure Receive
(Socket : UDPv4_Socket_Type;
Src : out UDPv4_Sockaddr_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
Sockaddr : Thin.Inet.Sockaddr_In_Type
(Family => Socket_Families.Family_Inet);
begin
Receive (Socket => Socket.Sock_FD,
Src => Sockaddr,
Item => Item,
Last => Last);
Src.Addr := Sockaddr.Sin_Addr;
Src.Port := Port_Type (Sockaddr.Sin_Port);
end Receive;
-------------------------------------------------------------------------
procedure Receive
(Socket : UDPv6_Socket_Type;
Src : out UDPv6_Sockaddr_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
Sockaddr : Thin.Inet.Sockaddr_In_Type
(Family => Socket_Families.Family_Inet6);
begin
Receive (Socket => Socket.Sock_FD,
Src => Sockaddr,
Item => Item,
Last => Last);
Src.Addr := Sockaddr.Sin6_Addr;
Src.Port := Port_Type (Sockaddr.Sin_Port);
end Receive;
-------------------------------------------------------------------------
procedure Send
(Socket : IPv4_Socket_Type;
Item : Ada.Streams.Stream_Element_Array;
Dst_Addr : IPv4_Addr_Type;
Dst_Port : Port_Type)
is
Res : C.long;
Dst : constant Thin.Inet.Sockaddr_In_Type := Thin.Inet.Create_Inet4
(Address => Dst_Addr,
Port => Dst_Port);
begin
Res := Thin.C_Sendto
(S => Socket.Sock_FD,
Buf => Item'Address,
Len => Item'Length,
Flags => 0,
To => Dst'Address,
Tolen => Dst'Size / 8);
Errno.Check_Or_Raise
(Result => C.int (Res),
Message => "Error sending data to " &
To_String (Address => Dst_Addr) & "," & Dst_Port'Img);
Check_Complete_Send
(Item => Item,
Result => Res,
Error_Msg => "Incomplete send operation to " &
To_String (Address => Dst_Addr) & "," & Dst_Port'Img);
end Send;
-------------------------------------------------------------------------
procedure Send
(Socket : IPv6_Socket_Type;
Item : Ada.Streams.Stream_Element_Array;
Dst_Addr : IPv6_Addr_Type;
Dst_Port : Port_Type)
is
Res : C.long;
Dst : constant Thin.Inet.Sockaddr_In_Type := Thin.Inet.Create_Inet6
(Address => Dst_Addr,
Port => Dst_Port);
begin
Res := Thin.C_Sendto
(S => Socket.Sock_FD,
Buf => Item'Address,
Len => Item'Length,
Flags => 0,
To => Dst'Address,
Tolen => Dst'Size / 8);
Errno.Check_Or_Raise
(Result => C.int (Res),
Message => "Error sending data to " &
To_String (Address => Dst_Addr) & "," & Dst_Port'Img);
Check_Complete_Send
(Item => Item,
Result => Res,
Error_Msg => "Incomplete send operation to " &
To_String (Address => Dst_Addr) & "," & Dst_Port'Img);
end Send;
end Anet.Sockets.Inet;
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