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
350 lines
8.3 KiB
C
350 lines
8.3 KiB
C
/* $NetBSD: filemapper.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: filemapper.c,v 1.1 2003/06/04 00:25:53 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <idn/result.h>
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#include <idn/assert.h>
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#include <idn/log.h>
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#include <idn/logmacro.h>
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#include <idn/debug.h>
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#include <idn/ucs4.h>
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#include <idn/ucsmap.h>
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#include <idn/filemapper.h>
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#define SUPPORT_VERSIONING
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#define UCSBUF_LOCAL_SIZE 20
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typedef struct ucsbuf {
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unsigned long *ucs;
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size_t size;
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size_t len;
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unsigned long local[UCSBUF_LOCAL_SIZE];
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} ucsbuf_t;
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struct idn__filemapper {
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idn_ucsmap_t map;
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};
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static void ucsbuf_init(ucsbuf_t *b);
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static idn_result_t ucsbuf_grow(ucsbuf_t *b);
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static idn_result_t ucsbuf_append(ucsbuf_t *b, unsigned long v);
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static void ucsbuf_free(ucsbuf_t *b);
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static idn_result_t read_file(const char *file, FILE *fp,
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idn_ucsmap_t map);
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static idn_result_t get_map(char *p, ucsbuf_t *b);
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static char *get_ucs(char *p, unsigned long *vp);
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idn_result_t
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idn__filemapper_create(const char *file, idn__filemapper_t *ctxp) {
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FILE *fp;
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idn__filemapper_t ctx;
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idn_result_t r;
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assert(file != NULL && ctxp != NULL);
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TRACE(("idn__filemapper_create(file=\"%-.100s\")\n", file));
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if ((fp = fopen(file, "r")) == NULL) {
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WARNING(("idn__filemapper_create: cannot open %-.100s\n",
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file));
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return (idn_nofile);
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}
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if ((ctx = malloc(sizeof(struct idn__filemapper))) == NULL)
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return (idn_nomemory);
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if ((r = idn_ucsmap_create(&ctx->map)) != idn_success) {
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free(ctx);
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return (r);
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}
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r = read_file(file, fp, ctx->map);
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fclose(fp);
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if (r == idn_success) {
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idn_ucsmap_fix(ctx->map);
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*ctxp = ctx;
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} else {
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idn_ucsmap_destroy(ctx->map);
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free(ctx);
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}
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return (r);
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}
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void
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idn__filemapper_destroy(idn__filemapper_t ctx) {
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assert(ctx != NULL);
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TRACE(("idn__filemapper_destroy()\n"));
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idn_ucsmap_destroy(ctx->map);
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free(ctx);
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}
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idn_result_t
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idn__filemapper_map(idn__filemapper_t ctx, const unsigned long *from,
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unsigned long *to, size_t tolen)
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{
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idn_result_t r = idn_success;
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ucsbuf_t ub;
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assert(ctx != NULL && from != NULL && to != NULL);
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TRACE(("idn__filemapper_map(from=\"%s\")\n",
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idn__debug_ucs4xstring(from, 50)));
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/* Initialize temporary buffer. */
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ucsbuf_init(&ub);
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while (*from != '\0') {
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/* Try mapping. */
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r = idn_ucsmap_map(ctx->map, *from, ub.ucs, ub.size, &ub.len);
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switch (r) {
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case idn_buffer_overflow:
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/* Temporary buffer too small. Enlarge and retry. */
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if ((r = ucsbuf_grow(&ub)) != idn_success)
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break;
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continue;
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case idn_nomapping:
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/* There is no mapping. */
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r = idn_success;
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/* fallthrough */
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case idn_success:
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if (tolen < ub.len) {
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r = idn_buffer_overflow;
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goto ret;
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}
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memcpy(to, ub.ucs, sizeof(*to) * ub.len);
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to += ub.len;
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tolen -= ub.len;
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break;
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default:
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goto ret;
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}
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from++;
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}
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ret:
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ucsbuf_free(&ub);
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if (r == idn_success) {
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/* Terminate with NUL. */
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if (tolen == 0)
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return (idn_buffer_overflow);
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*to = '\0';
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}
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return (r);
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}
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static void
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ucsbuf_init(ucsbuf_t *b) {
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b->ucs = b->local;
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b->size = UCSBUF_LOCAL_SIZE;
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b->len = 0;
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}
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static idn_result_t
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ucsbuf_grow(ucsbuf_t *b) {
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unsigned long *newbuf;
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b->size *= 2;
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if (b->ucs == b->local) {
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b->ucs = malloc(sizeof(unsigned long) * b->size);
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if (b->ucs == NULL)
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return (idn_nomemory);
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memcpy(b->ucs, b->local, sizeof(b->local));
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} else {
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newbuf = realloc(b->ucs, sizeof(unsigned long) * b->size);
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if (newbuf == NULL)
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return (idn_nomemory);
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b->ucs = newbuf;
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}
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return (idn_success);
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}
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static idn_result_t
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ucsbuf_append(ucsbuf_t *b, unsigned long v) {
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idn_result_t r;
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if (b->len + 1 > b->size) {
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r = ucsbuf_grow(b);
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if (r != idn_success)
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return (r);
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}
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b->ucs[b->len++] = v;
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return (idn_success);
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}
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static void
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ucsbuf_free(ucsbuf_t *b) {
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if (b->ucs != b->local && b->ucs != NULL)
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free(b->ucs);
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}
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static idn_result_t
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read_file(const char *file, FILE *fp, idn_ucsmap_t map) {
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char line[1024];
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ucsbuf_t ub;
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idn_result_t r = idn_success;
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int lineno = 0;
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ucsbuf_init(&ub);
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while (fgets(line, sizeof(line), fp) != NULL) {
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char *p = line;
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lineno++;
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while (isspace((unsigned char)*p))
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p++;
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if (*p == '\0' || *p == '#')
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continue;
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#ifdef SUPPORT_VERSIONING
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/* Skip version tag. */
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if (lineno == 1 && strncmp("version=", line, 8) == 0)
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continue;
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#endif
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again:
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ub.len = 0;
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r = get_map(p, &ub);
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switch (r) {
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case idn_success:
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r = idn_ucsmap_add(map, ub.ucs[0],
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&ub.ucs[1], ub.len - 1);
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break;
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case idn_buffer_overflow:
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if ((r = ucsbuf_grow(&ub)) != idn_success)
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break;
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goto again;
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case idn_invalid_syntax:
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WARNING(("syntax error in file \"%-.100s\" line %d: "
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"%-.100s", file, lineno, line));
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/* fall through */
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default:
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ucsbuf_free(&ub);
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return (r);
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}
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}
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ucsbuf_free(&ub);
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return (r);
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}
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static idn_result_t
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get_map(char *p, ucsbuf_t *b) {
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unsigned long v;
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idn_result_t r = idn_success;
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for (;;) {
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if ((p = get_ucs(p, &v)) == NULL)
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return (idn_invalid_syntax);
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if ((r = ucsbuf_append(b, v)) != idn_success)
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return (r);
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if (b->len == 1) {
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if (*p != ';')
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return (idn_invalid_syntax);
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p++;
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while (isspace((unsigned char)*p))
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p++;
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}
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if (*p == ';' || *p == '#' || *p == '\0')
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return (r);
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}
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return (r);
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}
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static char *
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get_ucs(char *p, unsigned long *vp) {
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char *end;
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/* Skip leading space */
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while (isspace((unsigned char)*p))
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p++;
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/* Skip optional 'U+' */
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if (strncmp(p, "U+", 2) == 0)
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p += 2;
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*vp = strtoul(p, &end, 16);
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if (end == p) {
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INFO(("idn__filemapper_create: UCS code point expected\n"));
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return (NULL);
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}
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p = end;
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/* Skip trailing space */
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while (isspace((unsigned char)*p))
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p++;
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return p;
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}
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idn_result_t
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idn__filemapper_createproc(const char *parameter, void **ctxp) {
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return idn__filemapper_create(parameter, (idn__filemapper_t *)ctxp);
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}
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void
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idn__filemapper_destroyproc(void *ctxp) {
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idn__filemapper_destroy((idn__filemapper_t)ctxp);
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}
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idn_result_t
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idn__filemapper_mapproc(void *ctx, const unsigned long *from,
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unsigned long *to, size_t tolen) {
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return idn__filemapper_map((idn__filemapper_t)ctx, from, to, tolen);
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}
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