133 lines
3.2 KiB
C
133 lines
3.2 KiB
C
/*
|
|
* Portions Copyright (C) 2001 Internet Software Consortium.
|
|
* Portions Copyright (C) 2001 Nominum, Inc.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM AND
|
|
* NOMINUM DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING
|
|
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
|
|
* SHALL INTERNET SOFTWARE CONSORTIUM OR NOMINUM BE LIABLE FOR ANY
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* $Id: ccmsg.h,v 1.3 2001/03/27 20:08:06 bwelling Exp $ */
|
|
|
|
#ifndef ISCCC_CCMSG_H
|
|
#define ISCCC_CCMSG_H 1
|
|
|
|
#include <isc/buffer.h>
|
|
#include <isc/lang.h>
|
|
#include <isc/socket.h>
|
|
|
|
typedef struct isccc_ccmsg {
|
|
/* private (don't touch!) */
|
|
unsigned int magic;
|
|
isc_uint32_t size;
|
|
isc_buffer_t buffer;
|
|
unsigned int maxsize;
|
|
isc_mem_t *mctx;
|
|
isc_socket_t *sock;
|
|
isc_task_t *task;
|
|
isc_taskaction_t action;
|
|
void *arg;
|
|
isc_event_t event;
|
|
/* public (read-only) */
|
|
isc_result_t result;
|
|
isc_sockaddr_t address;
|
|
} isccc_ccmsg_t;
|
|
|
|
ISC_LANG_BEGINDECLS
|
|
|
|
void
|
|
isccc_ccmsg_init(isc_mem_t *mctx, isc_socket_t *sock, isccc_ccmsg_t *ccmsg);
|
|
/*
|
|
* Associate a cc message state with a given memory context and
|
|
* TCP socket.
|
|
*
|
|
* Requires:
|
|
*
|
|
* "mctx" and "sock" be non-NULL and valid types.
|
|
*
|
|
* "sock" be a read/write TCP socket.
|
|
*
|
|
* "ccmsg" be non-NULL and an uninitialized or invalidated structure.
|
|
*
|
|
* Ensures:
|
|
*
|
|
* "ccmsg" is a valid structure.
|
|
*/
|
|
|
|
void
|
|
isccc_ccmsg_setmaxsize(isccc_ccmsg_t *ccmsg, unsigned int maxsize);
|
|
/*
|
|
* Set the maximum packet size to "maxsize"
|
|
*
|
|
* Requires:
|
|
*
|
|
* "ccmsg" be valid.
|
|
*
|
|
* 512 <= "maxsize" <= 4294967296
|
|
*/
|
|
|
|
isc_result_t
|
|
isccc_ccmsg_readmessage(isccc_ccmsg_t *ccmsg,
|
|
isc_task_t *task, isc_taskaction_t action, void *arg);
|
|
/*
|
|
* Schedule an event to be delivered when a command channel message is
|
|
* readable, or when an error occurs on the socket.
|
|
*
|
|
* Requires:
|
|
*
|
|
* "ccmsg" be valid.
|
|
*
|
|
* "task", "taskaction", and "arg" be valid.
|
|
*
|
|
* Returns:
|
|
*
|
|
* ISC_R_SUCCESS -- no error
|
|
* Anything that the isc_socket_recv() call can return. XXXMLG
|
|
*
|
|
* Notes:
|
|
*
|
|
* The event delivered is a fully generic event. It will contain no
|
|
* actual data. The sender will be a pointer to the isccc_ccmsg_t.
|
|
* The result code inside that structure should be checked to see
|
|
* what the final result was.
|
|
*/
|
|
|
|
void
|
|
isccc_ccmsg_cancelread(isccc_ccmsg_t *ccmsg);
|
|
/*
|
|
* Cancel a readmessage() call. The event will still be posted with a
|
|
* CANCELED result code.
|
|
*
|
|
* Requires:
|
|
*
|
|
* "ccmsg" be valid.
|
|
*/
|
|
|
|
void
|
|
isccc_ccmsg_invalidate(isccc_ccmsg_t *ccmsg);
|
|
/*
|
|
* Clean up all allocated state, and invalidate the structure.
|
|
*
|
|
* Requires:
|
|
*
|
|
* "ccmsg" be valid.
|
|
*
|
|
* Ensures:
|
|
*
|
|
* "ccmsg" is invalidated and disassociated with all memory contexts,
|
|
* sockets, etc.
|
|
*/
|
|
|
|
ISC_LANG_ENDDECLS
|
|
|
|
#endif /* ISCCC_CCMSG_H */
|