-- Transport Mechanism Mail Server - DEFS for Returning Mail --
-- also used for support of MTP --

-- [Juniper]<DMS>MS>ReturnDefs.mesa

-- Andrew Birrell   9-Jan-81 15:05:17 --

DIRECTORY
BodyDefs:	FROM "BodyDefs"
		USING[ ItemLength, RName, Timestamp ],
HeapDefs:	FROM "HeapDefs"
		USING[ ObjectNumber, ReaderHandle, WriterHandle ];

ReturnDefs:	DEFINITIONS = BEGIN

ParseBody:	PROC[reader: HeapDefs.ReaderHandle,
		     stamp: POINTER TO BodyDefs.Timestamp _ NIL,
		     sender: BodyDefs.RName _ NIL,
		     returnTo: BodyDefs.RName _ NIL ]
		RETURNS[ BodyDefs.ItemLength ];
   -- reader should initially be at start of body;
   -- Reads items from body, and leaves reader positioned
   -- at start of text of body, if text exists.
   -- Returns length of text, or 0 --

CopyItem:	PROC[reader: HeapDefs.ReaderHandle,
		     length: BodyDefs.ItemLength,
		     sendBlock: PROCEDURE[UNSPECIFIED,POINTER,CARDINAL],
		     sendBlockData: UNSPECIFIED ];
   -- Copies specified number of bytes from reader by
   -- calling sendBlock with sendBlockData, buffer address,
   -- and number of bytes. --

BadRecipients:	PROC[list: HeapDefs.WriterHandle,
		     body: HeapDefs.ObjectNumber];
   -- Recipients given by original sender were bad: tell "ReturnTo" name
   -- specified in message body properties --

BadGroup:	PROC[list: HeapDefs.WriterHandle,
		     body: HeapDefs.ObjectNumber,
		     group: BodyDefs.RName];
   -- Recipients in group were bad: tell owner --

RejectedByMTP:	PROC[list:   HeapDefs.WriterHandle,
		     body:   HeapDefs.ObjectNumber,
		     server: STRING,
		     text:   STRING];
   -- Recipients were rejected by MTP server: tell "ReturnTo" name
   -- specified in message body properties --

LongTerm:	PROC[list: HeapDefs.WriterHandle,
		     body: HeapDefs.ObjectNumber];
   -- Long-term timeout: tell "ReturnTo" name specified in message body
   -- properties --

END.