/usr/include/dns/tcpmsg.h is in libbind-dev 1:9.9.5.dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | /*
* Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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: tcpmsg.h,v 1.22 2007/06/19 23:47:17 tbox Exp $ */
#ifndef DNS_TCPMSG_H
#define DNS_TCPMSG_H 1
/*! \file dns/tcpmsg.h */
#include <isc/buffer.h>
#include <isc/lang.h>
#include <isc/socket.h>
typedef struct dns_tcpmsg {
/* private (don't touch!) */
unsigned int magic;
isc_uint16_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;
} dns_tcpmsg_t;
ISC_LANG_BEGINDECLS
void
dns_tcpmsg_init(isc_mem_t *mctx, isc_socket_t *sock, dns_tcpmsg_t *tcpmsg);
/*%<
* Associate a tcp message state with a given memory context and
* TCP socket.
*
* Requires:
*
*\li "mctx" and "sock" be non-NULL and valid types.
*
*\li "sock" be a read/write TCP socket.
*
*\li "tcpmsg" be non-NULL and an uninitialized or invalidated structure.
*
* Ensures:
*
*\li "tcpmsg" is a valid structure.
*/
void
dns_tcpmsg_setmaxsize(dns_tcpmsg_t *tcpmsg, unsigned int maxsize);
/*%<
* Set the maximum packet size to "maxsize"
*
* Requires:
*
*\li "tcpmsg" be valid.
*
*\li 512 <= "maxsize" <= 65536
*/
isc_result_t
dns_tcpmsg_readmessage(dns_tcpmsg_t *tcpmsg,
isc_task_t *task, isc_taskaction_t action, void *arg);
/*%<
* Schedule an event to be delivered when a DNS message is readable, or
* when an error occurs on the socket.
*
* Requires:
*
*\li "tcpmsg" be valid.
*
*\li "task", "taskaction", and "arg" be valid.
*
* Returns:
*
*\li ISC_R_SUCCESS -- no error
*\li Anything that the isc_socket_recv() call can return. XXXMLG
*
* Notes:
*
*\li The event delivered is a fully generic event. It will contain no
* actual data. The sender will be a pointer to the dns_tcpmsg_t.
* The result code inside that structure should be checked to see
* what the final result was.
*/
void
dns_tcpmsg_cancelread(dns_tcpmsg_t *tcpmsg);
/*%<
* Cancel a readmessage() call. The event will still be posted with a
* CANCELED result code.
*
* Requires:
*
*\li "tcpmsg" be valid.
*/
void
dns_tcpmsg_keepbuffer(dns_tcpmsg_t *tcpmsg, isc_buffer_t *buffer);
/*%<
* If a dns buffer is to be kept between calls, this function marks the
* internal state-machine buffer as invalid, and copies all the contents
* of the state into "buffer".
*
* Requires:
*
*\li "tcpmsg" be valid.
*
*\li "buffer" be non-NULL.
*/
void
dns_tcpmsg_invalidate(dns_tcpmsg_t *tcpmsg);
/*%<
* Clean up all allocated state, and invalidate the structure.
*
* Requires:
*
*\li "tcpmsg" be valid.
*
* Ensures:
*
*\li "tcpmsg" is invalidated and disassociated with all memory contexts,
* sockets, etc.
*/
ISC_LANG_ENDDECLS
#endif /* DNS_TCPMSG_H */
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