00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
271 lines
7.2 KiB
C
271 lines
7.2 KiB
C
/* $NetBSD: delimitermap.c,v 1.4 2014/12/10 04:37:55 christos Exp $ */
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#ifndef lint
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static char *rcsid = "Id: delimitermap.c,v 1.1 2003/06/04 00:25:52 marka Exp ";
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#endif
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/*
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* Copyright (c) 2001,2002 Japan Network Information Center.
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* All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set forth bellow.
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*
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* LICENSE TERMS AND CONDITIONS
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*
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* The following License Terms and Conditions apply, unless a different
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* license is obtained from Japan Network Information Center ("JPNIC"),
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* a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
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* Chiyoda-ku, Tokyo 101-0047, Japan.
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*
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* 1. Use, Modification and Redistribution (including distribution of any
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* modified or derived work) in source and/or binary forms is permitted
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* under this License Terms and Conditions.
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*
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* 2. Redistribution of source code must retain the copyright notices as they
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* appear in each source code file, this License Terms and Conditions.
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*
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* 3. Redistribution in binary form must reproduce the Copyright Notice,
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* this License Terms and Conditions, in the documentation and/or other
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* materials provided with the distribution. For the purposes of binary
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* distribution the "Copyright Notice" refers to the following language:
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* "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved."
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*
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* 4. The name of JPNIC may not be used to endorse or promote products
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* derived from this Software without specific prior written approval of
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* JPNIC.
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*
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* 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JPNIC BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <config.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <idn/result.h>
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#include <idn/assert.h>
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#include <idn/logmacro.h>
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#include <idn/delimitermap.h>
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#include <idn/util.h>
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#include <idn/debug.h>
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#include <idn/ucs4.h>
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/*
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* Mapper object type.
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*/
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struct idn_delimitermap {
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int ndelimiters;
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int delimiter_size;
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unsigned long *delimiters;
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int reference_count;
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};
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#define DELIMITERMAP_INITIAL_DELIMITER_SIZE 4
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#define UNICODE_MAX 0x10ffff
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#define IS_SURROGATE_HIGH(v) (0xd800 <= (v) && (v) <= 0xdbff)
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#define IS_SURROGATE_LOW(v) (0xdc00 <= (v) && (v) <= 0xdfff)
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idn_result_t
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idn_delimitermap_create(idn_delimitermap_t *ctxp) {
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idn_delimitermap_t ctx = NULL;
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idn_result_t r;
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assert(ctxp != NULL);
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TRACE(("idn_delimitermap_create()\n"));
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ctx = (idn_delimitermap_t) malloc(sizeof(struct idn_delimitermap));
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if (ctx == NULL) {
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WARNING(("idn_mapper_create: malloc failed\n"));
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r = idn_nomemory;
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goto ret;
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}
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ctx->delimiters = (unsigned long *) malloc(sizeof(unsigned long)
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* DELIMITERMAP_INITIAL_DELIMITER_SIZE);
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if (ctx->delimiters == NULL) {
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r = idn_nomemory;
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goto ret;
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}
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ctx->ndelimiters = 0;
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ctx->delimiter_size = DELIMITERMAP_INITIAL_DELIMITER_SIZE;
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ctx->reference_count = 1;
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*ctxp = ctx;
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r = idn_success;
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ret:
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if (r != idn_success)
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free(ctx);
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TRACE(("idn_delimitermap_create(): %s\n", idn_result_tostring(r)));
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return (r);
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}
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void
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idn_delimitermap_destroy(idn_delimitermap_t ctx) {
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assert(ctx != NULL);
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TRACE(("idn_delimitermap_destroy()\n"));
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ctx->reference_count--;
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if (ctx->reference_count <= 0) {
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TRACE(("idn_mapper_destroy(): the object is destroyed\n"));
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free(ctx->delimiters);
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free(ctx);
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} else {
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TRACE(("idn_delimitermap_destroy(): "
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"update reference count (%d->%d)\n",
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ctx->reference_count + 1, ctx->reference_count));
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}
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}
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void
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idn_delimitermap_incrref(idn_delimitermap_t ctx) {
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assert(ctx != NULL);
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TRACE(("idn_delimitermap_incrref()\n"));
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TRACE(("idn_delimitermap_incrref: update reference count (%d->%d)\n",
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ctx->reference_count, ctx->reference_count + 1));
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ctx->reference_count++;
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}
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idn_result_t
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idn_delimitermap_add(idn_delimitermap_t ctx, unsigned long delimiter) {
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idn_result_t r;
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assert(ctx != NULL && ctx->ndelimiters <= ctx->delimiter_size);
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TRACE(("idn_delimitermap_add(delimiter=\\x%04lx)\n", delimiter));
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if (delimiter == 0 || delimiter > UNICODE_MAX ||
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IS_SURROGATE_HIGH(delimiter) || IS_SURROGATE_LOW(delimiter)) {
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r = idn_invalid_codepoint;
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goto ret;
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}
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if (ctx->ndelimiters == ctx->delimiter_size) {
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unsigned long *new_delimiters;
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new_delimiters = (unsigned long *) realloc(ctx->delimiters,
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sizeof(unsigned long) * ctx->delimiter_size * 2);
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if (new_delimiters == NULL) {
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r = idn_nomemory;
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goto ret;
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}
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ctx->delimiters = new_delimiters;
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ctx->delimiter_size *= 2;
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}
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ctx->delimiters[ctx->ndelimiters] = delimiter;
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ctx->ndelimiters++;
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r = idn_success;
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ret:
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TRACE(("idn_delimitermap_add(): %s\n", idn_result_tostring(r)));
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return (r);
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}
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idn_result_t
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idn_delimitermap_addall(idn_delimitermap_t ctx, unsigned long *delimiters,
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int ndelimiters) {
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idn_result_t r;
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int i;
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assert(ctx != NULL && delimiters != NULL);
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TRACE(("idn_delimitermap_addall(ndelimiters=%d)\n", ndelimiters));
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for (i = 0; i < ndelimiters; i++) {
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r = idn_delimitermap_add(ctx, *delimiters);
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if (r != idn_success)
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goto ret;
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delimiters++;
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}
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r = idn_success;
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ret:
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TRACE(("idn_delimitermap_addall(): %s\n", idn_result_tostring(r)));
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return (r);
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}
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idn_result_t
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idn_delimitermap_map(idn_delimitermap_t ctx, const unsigned long *from,
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unsigned long *to, size_t tolen) {
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/* default delimiters (label separators) from IDNA specification */
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static const unsigned long default_delimiters[] =
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{ 0x002e, /* full stop */
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0x3002, /* ideographic full stop */
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0xff0e, /* fullwidth full stop */
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0xff61, /* halfwidth ideographic full stop */
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0x0000 };
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unsigned long *to_org = to;
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idn_result_t r;
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int i, j;
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int found;
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assert(ctx != NULL && from != NULL && to != NULL);
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TRACE(("idn_delimitermap_map(from=\"%s\", tolen=%d)\n",
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idn__debug_ucs4xstring(from, 50), (int)tolen));
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/*
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* Map.
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*/
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while (*from != '\0') {
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found = 0;
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if (tolen < 1) {
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r = idn_buffer_overflow;
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goto ret;
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}
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for (j = 0; default_delimiters[j] != 0x0000; j++) {
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if (default_delimiters[j] == *from) {
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found = 1;
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break;
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}
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}
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if (!found) {
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for (i = 0; i < ctx->ndelimiters; i++) {
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if (ctx->delimiters[i] == *from) {
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found = 1;
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break;
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}
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}
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}
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if (found)
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*to = '.';
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else
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*to = *from;
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from++;
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to++;
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tolen--;
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}
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if (tolen < 1) {
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r = idn_buffer_overflow;
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goto ret;
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}
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*to = '\0';
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r = idn_success;
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ret:
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if (r == idn_success) {
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TRACE(("idn_delimitermap_map(): success (to=\"%s\")\n",
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idn__debug_ucs4xstring(to_org, 50)));
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} else {
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TRACE(("idn_delimitermap_map(): %s\n",
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idn_result_tostring(r)));
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}
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return (r);
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}
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