244 lines
6.3 KiB
C
244 lines
6.3 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: iconv.c,v 1.16 2009/02/20 15:28:21 yamt Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c)2003 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/capsicum.h>
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#include <capsicum_helpers.h>
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#include <err.h>
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#include <errno.h>
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#include <getopt.h>
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#include <iconv.h>
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#include <limits.h>
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#include <locale.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static int do_conv(FILE *, iconv_t, bool, bool);
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static int do_list(unsigned int, const char * const *, void *);
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static void usage(void) __dead2;
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static const struct option long_options[] = {
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{"from-code", required_argument, NULL, 'f'},
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{"list", no_argument, NULL, 'l'},
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{"silent", no_argument, NULL, 's'},
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{"to-code", required_argument, NULL, 't'},
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{NULL, no_argument, NULL, 0}
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};
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"Usage:\t%1$s [-cs] -f <from_code> -t <to_code> [file ...]\n"
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"\t%1$s -f <from_code> [-cs] [-t <to_code>] [file ...]\n"
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"\t%1$s -t <to_code> [-cs] [-f <from_code>] [file ...]\n"
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"\t%1$s -l\n", getprogname());
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exit(1);
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}
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#define INBUFSIZE 1024
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#define OUTBUFSIZE (INBUFSIZE * 2)
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static int
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do_conv(FILE *fp, iconv_t cd, bool silent, bool hide_invalid)
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{
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char inbuf[INBUFSIZE], outbuf[OUTBUFSIZE], *in, *out;
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unsigned long long invalids;
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size_t inbytes, outbytes, ret;
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int arg = (int)hide_invalid;
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if (iconvctl(cd, ICONV_SET_DISCARD_ILSEQ, (void *)&arg) == -1)
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err(EXIT_FAILURE, "iconvctl(DISCARD_ILSEQ, %d)", arg);
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invalids = 0;
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while ((inbytes = fread(inbuf, 1, INBUFSIZE, fp)) > 0) {
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in = inbuf;
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while (inbytes > 0) {
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size_t inval;
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out = outbuf;
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outbytes = OUTBUFSIZE;
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ret = __iconv(cd, &in, &inbytes, &out, &outbytes,
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0, &inval);
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invalids += inval;
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if (outbytes < OUTBUFSIZE)
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(void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes,
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stdout);
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if (ret == (size_t)-1 && errno != E2BIG) {
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if (errno != EINVAL || in == inbuf)
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err(EXIT_FAILURE, "iconv()");
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/* incomplete input character */
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(void)memmove(inbuf, in, inbytes);
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ret = fread(inbuf + inbytes, 1,
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INBUFSIZE - inbytes, fp);
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if (ret == 0) {
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fflush(stdout);
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if (feof(fp))
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errx(EXIT_FAILURE,
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"unexpected end of file; "
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"the last character is "
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"incomplete.");
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else
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err(EXIT_FAILURE, "fread()");
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}
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in = inbuf;
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inbytes += ret;
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}
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}
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}
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/* reset the shift state of the output buffer */
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outbytes = OUTBUFSIZE;
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out = outbuf;
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ret = iconv(cd, NULL, NULL, &out, &outbytes);
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if (ret == (size_t)-1)
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err(EXIT_FAILURE, "iconv()");
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if (outbytes < OUTBUFSIZE)
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(void)fwrite(outbuf, 1, OUTBUFSIZE - outbytes, stdout);
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if (invalids > 0 && !silent)
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warnx("warning: invalid characters: %llu", invalids);
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return (invalids > 0);
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}
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static int
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do_list(unsigned int n, const char * const *list, void *data __unused)
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{
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unsigned int i;
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for(i = 0; i < n; i++) {
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printf("%s", list[i]);
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if (i < n - 1)
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printf(" ");
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}
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printf("\n");
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return (1);
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}
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int
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main(int argc, char **argv)
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{
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iconv_t cd;
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FILE *fp;
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const char *opt_f, *opt_t;
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int ch, i, res;
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bool opt_c = false, opt_s = false;
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opt_f = opt_t = "";
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setlocale(LC_ALL, "");
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setprogname(argv[0]);
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while ((ch = getopt_long(argc, argv, "csLlf:t:",
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long_options, NULL)) != -1) {
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switch (ch) {
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case 'c':
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opt_c = true;
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break;
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case 's':
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opt_s = true;
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break;
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case 'l':
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/* list */
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if (opt_s || opt_c || strcmp(opt_f, "") != 0 ||
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strcmp(opt_t, "") != 0) {
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warnx("-l is not allowed with other flags.");
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usage();
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}
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iconvlist(do_list, NULL);
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return (EXIT_SUCCESS);
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case 'f':
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/* from */
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if (optarg != NULL)
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opt_f = optarg;
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break;
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case 't':
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/* to */
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if (optarg != NULL)
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opt_t = optarg;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if ((strcmp(opt_f, "") == 0) && (strcmp(opt_t, "") == 0))
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usage();
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if (caph_limit_stdio() < 0)
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err(EXIT_FAILURE, "capsicum");
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/*
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* Cache NLS data, for strerror, for err(3), before entering capability
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* mode.
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*/
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caph_cache_catpages();
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/*
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* Cache iconv conversion handle before entering sandbox.
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*/
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cd = iconv_open(opt_t, opt_f);
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if (cd == (iconv_t)-1)
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err(EXIT_FAILURE, "iconv_open(%s, %s)", opt_t, opt_f);
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if (argc == 0) {
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if (caph_enter() < 0)
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err(EXIT_FAILURE, "unable to enter capability mode");
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res = do_conv(stdin, cd, opt_s, opt_c);
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} else {
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res = 0;
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for (i = 0; i < argc; i++) {
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fp = (strcmp(argv[i], "-") != 0) ?
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fopen(argv[i], "r") : stdin;
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if (fp == NULL)
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err(EXIT_FAILURE, "Cannot open `%s'",
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argv[i]);
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/* Enter Capsicum sandbox for final input file. */
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if (i + 1 == argc && caph_enter() < 0)
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err(EXIT_FAILURE,
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"unable to enter capability mode");
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res |= do_conv(fp, cd, opt_s, opt_c);
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(void)fclose(fp);
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/* Reset iconv descriptor state. */
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(void)iconv(cd, NULL, NULL, NULL, NULL);
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}
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}
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iconv_close(cd);
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return (res == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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