45 lines
2.0 KiB
Ada
45 lines
2.0 KiB
Ada
----------------------------------------------------------------
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-- IRONSIDES - DNS SERVER
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--
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-- By: Martin C. Carlisle and Barry S. Fagin
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-- Department of Computer Science
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-- United States Air Force Academy
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--
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-- This is free software; you can redistribute it and/or
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-- modify without restriction. We do ask that you please keep
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-- the original author information, and clearly indicate if the
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-- software has been modified.
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--
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-- This software is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty
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-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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----------------------------------------------------------------
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WITH DNS_Types;
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with DNS_Network;
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--# inherit DNS_Types,DNS_Network;
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PACKAGE Dns_Network_Receive IS
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procedure Receive_DNS_Packet_TCP
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(Packet : out DNS_Types.DNS_Tcp_Packet;
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Number_Bytes : out DNS_Types.Packet_Length_Range;
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Socket : in DNS_Network.DNS_Socket;
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Failure : out Boolean);
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--# global in out DNS_Network.Network;
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--# derives DNS_Network.Network, Packet, Number_Bytes, Failure from DNS_Network.Network, Socket;
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--# post (not Failure) -> (Number_Bytes >= DNS_Types.Packet_Length_Range(1+DNS_Types.Header_Bits/8)
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--# and Number_Bytes <= DNS_Network.MAX_QUERY_SIZE);
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-- Reads a single UDP packet from network on port 53
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-- Last is the number of bytes read (assuming no failure)
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procedure Receive_DNS_Packet(
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Packet : out DNS_Types.DNS_Packet;
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Number_Bytes : out DNS_Types.Packet_Length_Range;
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Reply_Address : out DNS_Network.Network_Address_and_Port;
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Failure : out Boolean);
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--# global in out DNS_Network.Network;
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--# derives DNS_Network.Network, Packet, Number_Bytes, Reply_Address, Failure from DNS_Network.Network;
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--# post (not Failure) -> (Number_Bytes >= DNS_Types.Packet_Length_Range(1+DNS_Types.Header_Bits/8)
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--# and Number_Bytes <= DNS_Network.MAX_QUERY_SIZE);
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END Dns_Network_Receive;
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