freebsd-skq/usr.bin/iconv/iconv.c
pfg 7551d83c35 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00

244 lines
6.3 KiB
C

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