diff options
Diffstat (limited to 'usr.sbin/bind/lib/lwres/lwpacket.c')
| -rw-r--r-- | usr.sbin/bind/lib/lwres/lwpacket.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/usr.sbin/bind/lib/lwres/lwpacket.c b/usr.sbin/bind/lib/lwres/lwpacket.c deleted file mode 100644 index 9f565fb3b5e..00000000000 --- a/usr.sbin/bind/lib/lwres/lwpacket.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Copyright (C) Internet Systems Consortium, Inc. ("ISC") - * - * 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: lwpacket.c,v 1.3 2019/12/17 01:46:38 sthen Exp $ */ - -/*! \file */ - -/** - * These functions rely on a struct lwres_lwpacket which is defined in - * \link lwpacket.h lwres/lwpacket.h.\endlink - * - * The following opcodes are currently defined: - * - * \li #LWRES_OPCODE_NOOP - * Success is always returned and the packet contents are - * echoed. The \link lwres_noop.c lwres_noop_*()\endlink functions should be used for this - * type. - * - * \li #LWRES_OPCODE_GETADDRSBYNAME - * returns all known addresses for a given name. The - * \link lwres_gabn.c lwres_gabn_*()\endlink functions should be used for this type. - * - * \li #LWRES_OPCODE_GETNAMEBYADDR - * return the hostname for the given address. The - * \link lwres_gnba.c lwres_gnba_*() \endlink functions should be used for this type. - * - * lwres_lwpacket_renderheader() transfers the contents of lightweight - * resolver packet structure #lwres_lwpacket_t *pkt in network byte - * order to the lightweight resolver buffer, *b. - * - * lwres_lwpacket_parseheader() performs the converse operation. It - * transfers data in network byte order from buffer *b to resolver - * packet *pkt. The contents of the buffer b should correspond to a - * #lwres_lwpacket_t. - * - * \section lwpacket_return Return Values - * - * Successful calls to lwres_lwpacket_renderheader() and - * lwres_lwpacket_parseheader() return #LWRES_R_SUCCESS. If there is - * insufficient space to copy data between the buffer *b and - * lightweight resolver packet *pkt both functions return - * #LWRES_R_UNEXPECTEDEND. - */ - -#include <config.h> - -#include <assert.h> -#include <stdlib.h> -#include <string.h> - -#include <lwres/lwbuffer.h> -#include <lwres/lwpacket.h> -#include <lwres/result.h> - -#include "assert_p.h" - -/*% Length of Packet */ -#define LWPACKET_LENGTH \ - (sizeof(lwres_uint16_t) * 4 + sizeof(lwres_uint32_t) * 5) - -/*% transfers the contents of lightweight resolver packet structure lwres_lwpacket_t *pkt in network byte order to the lightweight resolver buffer, *b. */ - -lwres_result_t -lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) { - REQUIRE(b != NULL); - REQUIRE(pkt != NULL); - - if (!SPACE_OK(b, LWPACKET_LENGTH)) - return (LWRES_R_UNEXPECTEDEND); - - lwres_buffer_putuint32(b, pkt->length); - lwres_buffer_putuint16(b, pkt->version); - lwres_buffer_putuint16(b, pkt->pktflags); - lwres_buffer_putuint32(b, pkt->serial); - lwres_buffer_putuint32(b, pkt->opcode); - lwres_buffer_putuint32(b, pkt->result); - lwres_buffer_putuint32(b, pkt->recvlength); - lwres_buffer_putuint16(b, pkt->authtype); - lwres_buffer_putuint16(b, pkt->authlength); - - return (LWRES_R_SUCCESS); -} - -/*% transfers data in network byte order from buffer *b to resolver packet *pkt. The contents of the buffer b should correspond to a lwres_lwpacket_t. */ - -lwres_result_t -lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) { - lwres_uint32_t space; - - REQUIRE(b != NULL); - REQUIRE(pkt != NULL); - - space = LWRES_BUFFER_REMAINING(b); - if (space < LWPACKET_LENGTH) - return (LWRES_R_UNEXPECTEDEND); - - pkt->length = lwres_buffer_getuint32(b); - /* - * XXXBEW/MLG Checking that the buffer is long enough probably - * shouldn't be done here, since this function is supposed to just - * parse the header. - */ - if (pkt->length > space) - return (LWRES_R_UNEXPECTEDEND); - pkt->version = lwres_buffer_getuint16(b); - pkt->pktflags = lwres_buffer_getuint16(b); - pkt->serial = lwres_buffer_getuint32(b); - pkt->opcode = lwres_buffer_getuint32(b); - pkt->result = lwres_buffer_getuint32(b); - pkt->recvlength = lwres_buffer_getuint32(b); - pkt->authtype = lwres_buffer_getuint16(b); - pkt->authlength = lwres_buffer_getuint16(b); - - return (LWRES_R_SUCCESS); -} |