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b0e8ce6c3d
situations. If the header was split across two packet reads, it was
invalidly processed, causing loss or modification of messages.
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* Definitions for tcps_sess class. This implements a session of the
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* plain TCP server.
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*
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* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
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*
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* This file is part of rsyslog.
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*
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* Rsyslog is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Rsyslog is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
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*
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* A copy of the GPL can be found in the file "COPYING" in this distribution.
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*/
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#ifndef INCLUDED_TCPS_SESS_H
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#define INCLUDED_TCPS_SESS_H
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#include "obj.h"
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/* a forward-definition, we are somewhat cyclic */
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struct tcpsrv_s;
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/* framing modes for TCP */
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typedef enum _TCPFRAMINGMODE {
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TCP_FRAMING_OCTET_STUFFING = 0, /* traditional LF-delimited */
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TCP_FRAMING_OCTET_COUNTING = 1 /* -transport-tls like octet count */
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} TCPFRAMINGMODE;
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/* the tcps_sess object */
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typedef struct tcps_sess_s {
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BEGINobjInstance; /* Data to implement generic object - MUST be the first data element! */
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struct tcpsrv_s *pSrv; /* pointer back to my server (e.g. for callbacks) */
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int sock;
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int iMsg; /* index of next char to store in msg */
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int bAtStrtOfFram; /* are we at the very beginning of a new frame? */
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enum {
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eAtStrtFram,
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eInOctetCnt,
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eInMsg
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} inputState; /* our current state */
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int iOctetsRemain; /* Number of Octets remaining in message */
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TCPFRAMINGMODE eFraming;
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char msg[MAXLINE+1];
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char *fromHost;
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void *pUsr; /* a user-pointer */
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} tcps_sess_t;
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/* interfaces */
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BEGINinterface(tcps_sess) /* name must also be changed in ENDinterface macro! */
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INTERFACEObjDebugPrint(tcps_sess);
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rsRetVal (*Construct)(tcps_sess_t **ppThis);
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rsRetVal (*ConstructFinalize)(tcps_sess_t __attribute__((unused)) *pThis);
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rsRetVal (*Destruct)(tcps_sess_t **ppThis);
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rsRetVal (*PrepareClose)(tcps_sess_t *pThis);
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rsRetVal (*Close)(tcps_sess_t *pThis);
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rsRetVal (*DataRcvd)(tcps_sess_t *pThis, char *pData, size_t iLen);
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/* set methods */
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rsRetVal (*SetTcpsrv)(tcps_sess_t *pThis, struct tcpsrv_s *pSrv);
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rsRetVal (*SetUsrP)(tcps_sess_t*, void*);
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rsRetVal (*SetHost)(tcps_sess_t *pThis, uchar*);
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rsRetVal (*SetSock)(tcps_sess_t *pThis, int);
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rsRetVal (*SetMsgIdx)(tcps_sess_t *pThis, int);
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ENDinterface(tcps_sess)
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#define tcps_sessCURR_IF_VERSION 1 /* increment whenever you change the interface structure! */
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/* prototypes */
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PROTOTYPEObj(tcps_sess);
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#endif /* #ifndef INCLUDED_TCPS_SESS_H */
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