From ba8f85b49c38af7bc2a9acdef5dcde2de008d25e Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Sat, 12 Jul 2008 05:00:28 +0000
Subject: Flatten bind9 vendor work area
---
contrib/bind9/lib/lwres/lwbuffer.c | 361 -------------------------------------
1 file changed, 361 deletions(-)
delete mode 100644 contrib/bind9/lib/lwres/lwbuffer.c
(limited to 'contrib/bind9/lib/lwres/lwbuffer.c')
diff --git a/contrib/bind9/lib/lwres/lwbuffer.c b/contrib/bind9/lib/lwres/lwbuffer.c
deleted file mode 100644
index 5191592..0000000
--- a/contrib/bind9/lib/lwres/lwbuffer.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000, 2001 Internet Software Consortium.
- *
- * 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 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: lwbuffer.c,v 1.11.18.2 2005/04/29 00:17:18 marka Exp $ */
-
-/*! \file */
-
-/**
- * These functions provide bounds checked access to a region of memory
- * where data is being read or written. They are based on, and similar
- * to, the isc_buffer_ functions in the ISC library.
- *
- * A buffer is a region of memory, together with a set of related
- * subregions. The used region and the available region are disjoint, and
- * their union is the buffer's region. The used region extends from the
- * beginning of the buffer region to the last used byte. The available
- * region extends from one byte greater than the last used byte to the
- * end of the buffer's region. The size of the used region can be changed
- * using various buffer commands. Initially, the used region is empty.
- *
- * The used region is further subdivided into two disjoint regions: the
- * consumed region and the remaining region. The union of these two
- * regions is the used region. The consumed region extends from the
- * beginning of the used region to the byte before the current offset (if
- * any). The remaining region the current pointer to the end of the used
- * region. The size of the consumed region can be changed using various
- * buffer commands. Initially, the consumed region is empty.
- *
- * The active region is an (optional) subregion of the remaining region.
- * It extends from the current offset to an offset in the remaining
- * region. Initially, the active region is empty. If the current offset
- * advances beyond the chosen offset, the active region will also be
- * empty.
- *
- *
- * \verbatim
- * /------------entire length---------------\\
- * /----- used region -----\\/-- available --\\
- * +----------------------------------------+
- * | consumed | remaining | |
- * +----------------------------------------+
- * a b c d e
- *
- * a == base of buffer.
- * b == current pointer. Can be anywhere between a and d.
- * c == active pointer. Meaningful between b and d.
- * d == used pointer.
- * e == length of buffer.
- *
- * a-e == entire length of buffer.
- * a-d == used region.
- * a-b == consumed region.
- * b-d == remaining region.
- * b-c == optional active region.
- * \endverbatim
- *
- * lwres_buffer_init() initializes the lwres_buffer_t *b and assocates it
- * with the memory region of size length bytes starting at location base.
- *
- * lwres_buffer_invalidate() marks the buffer *b as invalid. Invalidating
- * a buffer after use is not required, but makes it possible to catch its
- * possible accidental use.
- *
- * The functions lwres_buffer_add() and lwres_buffer_subtract()
- * respectively increase and decrease the used space in buffer *b by n
- * bytes. lwres_buffer_add() checks for buffer overflow and
- * lwres_buffer_subtract() checks for underflow. These functions do not
- * allocate or deallocate memory. They just change the value of used.
- *
- * A buffer is re-initialised by lwres_buffer_clear(). The function sets
- * used , current and active to zero.
- *
- * lwres_buffer_first() makes the consumed region of buffer *p empty by
- * setting current to zero (the start of the buffer).
- *
- * lwres_buffer_forward() increases the consumed region of buffer *b by n
- * bytes, checking for overflow. Similarly, lwres_buffer_back() decreases
- * buffer b's consumed region by n bytes and checks for underflow.
- *
- * lwres_buffer_getuint8() reads an unsigned 8-bit integer from *b and
- * returns it. lwres_buffer_putuint8() writes the unsigned 8-bit integer
- * val to buffer *b.
- *
- * lwres_buffer_getuint16() and lwres_buffer_getuint32() are identical to
- * lwres_buffer_putuint8() except that they respectively read an unsigned
- * 16-bit or 32-bit integer in network byte order from b. Similarly,
- * lwres_buffer_putuint16() and lwres_buffer_putuint32() writes the
- * unsigned 16-bit or 32-bit integer val to buffer b, in network byte
- * order.
- *
- * Arbitrary amounts of data are read or written from a lightweight
- * resolver buffer with lwres_buffer_getmem() and lwres_buffer_putmem()
- * respectively. lwres_buffer_putmem() copies length bytes of memory at
- * base to b. Conversely, lwres_buffer_getmem() copies length bytes of
- * memory from b to base.
- */
-
-#include <config.h>
-
-#include <string.h>
-
-#include <lwres/lwbuffer.h>
-
-#include "assert_p.h"
-
-void
-lwres_buffer_init(lwres_buffer_t *b, void *base, unsigned int length)
-{
- /*
- * Make 'b' refer to the 'length'-byte region starting at base.
- */
-
- REQUIRE(b != NULL);
-
- b->magic = LWRES_BUFFER_MAGIC;
- b->base = base;
- b->length = length;
- b->used = 0;
- b->current = 0;
- b->active = 0;
-}
-
-/* Make 'b' an invalid buffer. */
-void
-lwres_buffer_invalidate(lwres_buffer_t *b)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
-
- b->magic = 0;
- b->base = NULL;
- b->length = 0;
- b->used = 0;
- b->current = 0;
- b->active = 0;
-}
-
-/* Increase the 'used' region of 'b' by 'n' bytes. */
-void
-lwres_buffer_add(lwres_buffer_t *b, unsigned int n)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used + n <= b->length);
-
- b->used += n;
-}
-
-/* Decrease the 'used' region of 'b' by 'n' bytes. */
-void
-lwres_buffer_subtract(lwres_buffer_t *b, unsigned int n)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used >= n);
-
- b->used -= n;
- if (b->current > b->used)
- b->current = b->used;
- if (b->active > b->used)
- b->active = b->used;
-}
-
-/* Make the used region empty. */
-void
-lwres_buffer_clear(lwres_buffer_t *b)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
-
- b->used = 0;
- b->current = 0;
- b->active = 0;
-}
-
-/* Make the consumed region empty. */
-void
-lwres_buffer_first(lwres_buffer_t *b)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
-
- b->current = 0;
-}
-
-/* Increase the 'consumed' region of 'b' by 'n' bytes. */
-void
-lwres_buffer_forward(lwres_buffer_t *b, unsigned int n)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->current + n <= b->used);
-
- b->current += n;
-}
-
-/* Decrease the 'consumed' region of 'b' by 'n' bytes. */
-void
-lwres_buffer_back(lwres_buffer_t *b, unsigned int n)
-{
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(n <= b->current);
-
- b->current -= n;
-}
-
-/* Read an unsigned 8-bit integer from 'b' and return it. */
-lwres_uint8_t
-lwres_buffer_getuint8(lwres_buffer_t *b)
-{
- unsigned char *cp;
- lwres_uint8_t result;
-
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used - b->current >= 1);
-
- cp = b->base;
- cp += b->current;
- b->current += 1;
- result = ((unsigned int)(cp[0]));
-
- return (result);
-}
-
-/* Put an unsigned 8-bit integer */
-void
-lwres_buffer_putuint8(lwres_buffer_t *b, lwres_uint8_t val)
-{
- unsigned char *cp;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used + 1 <= b->length);
-
- cp = b->base;
- cp += b->used;
- b->used += 1;
- cp[0] = (val & 0x00ff);
-}
-
-/* Read an unsigned 16-bit integer in network byte order from 'b', convert it to host byte order, and return it. */
-lwres_uint16_t
-lwres_buffer_getuint16(lwres_buffer_t *b)
-{
- unsigned char *cp;
- lwres_uint16_t result;
-
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used - b->current >= 2);
-
- cp = b->base;
- cp += b->current;
- b->current += 2;
- result = ((unsigned int)(cp[0])) << 8;
- result |= ((unsigned int)(cp[1]));
-
- return (result);
-}
-
-/* Put an unsigned 16-bit integer. */
-void
-lwres_buffer_putuint16(lwres_buffer_t *b, lwres_uint16_t val)
-{
- unsigned char *cp;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used + 2 <= b->length);
-
- cp = b->base;
- cp += b->used;
- b->used += 2;
- cp[0] = (val & 0xff00) >> 8;
- cp[1] = (val & 0x00ff);
-}
-
-/* Read an unsigned 32-bit integer in network byte order from 'b', convert it to host byte order, and return it. */
-lwres_uint32_t
-lwres_buffer_getuint32(lwres_buffer_t *b)
-{
- unsigned char *cp;
- lwres_uint32_t result;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used - b->current >= 4);
-
- cp = b->base;
- cp += b->current;
- b->current += 4;
- result = ((unsigned int)(cp[0])) << 24;
- result |= ((unsigned int)(cp[1])) << 16;
- result |= ((unsigned int)(cp[2])) << 8;
- result |= ((unsigned int)(cp[3]));
-
- return (result);
-}
-
-/* Put an unsigned 32-bit integer. */
-void
-lwres_buffer_putuint32(lwres_buffer_t *b, lwres_uint32_t val)
-{
- unsigned char *cp;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used + 4 <= b->length);
-
- cp = b->base;
- cp += b->used;
- b->used += 4;
- cp[0] = (unsigned char)((val & 0xff000000) >> 24);
- cp[1] = (unsigned char)((val & 0x00ff0000) >> 16);
- cp[2] = (unsigned char)((val & 0x0000ff00) >> 8);
- cp[3] = (unsigned char)(val & 0x000000ff);
-}
-
-/* copies length bytes of memory at base to b */
-void
-lwres_buffer_putmem(lwres_buffer_t *b, const unsigned char *base,
- unsigned int length)
-{
- unsigned char *cp;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used + length <= b->length);
-
- cp = (unsigned char *)b->base + b->used;
- memcpy(cp, base, length);
- b->used += length;
-}
-
-/* copies length bytes of memory at b to base */
-void
-lwres_buffer_getmem(lwres_buffer_t *b, unsigned char *base,
- unsigned int length)
-{
- unsigned char *cp;
-
- REQUIRE(LWRES_BUFFER_VALID(b));
- REQUIRE(b->used - b->current >= length);
-
- cp = b->base;
- cp += b->current;
- b->current += length;
-
- memcpy(base, cp, length);
-}
--
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