bsd_iconv.c revision 258750 
1/* $FreeBSD: stable/10/lib/libc/iconv/bsd_iconv.c 258750 2013-11-29 19:44:30Z gjb $ */
2/* $NetBSD: iconv.c,v 1.11 2009/03/03 16:22:33 explorer Exp $ */
3
4/*-
5 * Copyright (c) 2003 Citrus Project,
6 * Copyright (c) 2009, 2010 Gabor Kovesdan <gabor@FreeBSD.org>,
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
32#include <sys/queue.h>
33#include <sys/types.h>
34
35#include <assert.h>
36#include <errno.h>
37#include <iconv.h>
38#include <limits.h>
39#include <paths.h>
40#include <stdbool.h>
41#include <stdlib.h>
42#include <string.h>
43
44#include "citrus_types.h"
45#include "citrus_module.h"
46#include "citrus_esdb.h"
47#include "citrus_hash.h"
48#include "citrus_iconv.h"
49
50#include "iconv-internal.h"
51
52#define ISBADF(_h_)	(!(_h_) || (_h_) == (iconv_t)-1)
53
54static iconv_t
55__bsd___iconv_open(const char *out, const char *in, struct _citrus_iconv *handle)
56{
57	const char *out_slashes;
58	char *out_noslashes;
59	int ret;
60
61	/*
62	 * Remove anything following a //, as these are options (like
63	 * //ignore, //translate, etc) and we just don't handle them.
64	 * This is for compatibility with software that uses these
65	 * blindly.
66	 */
67	out_slashes = strstr(out, "//");
68	if (out_slashes != NULL) {
69		out_noslashes = strndup(out, out_slashes - out);
70		if (out_noslashes == NULL) {
71			errno = ENOMEM;
72			return ((iconv_t)-1);
73		}
74		ret = _citrus_iconv_open(&handle, in, out_noslashes);
75		free(out_noslashes);
76	} else {
77		ret = _citrus_iconv_open(&handle, in, out);
78	}
79
80	if (ret) {
81		errno = ret == ENOENT ? EINVAL : ret;
82		return ((iconv_t)-1);
83	}
84
85	handle->cv_shared->ci_discard_ilseq = strcasestr(out, "//IGNORE");
86	handle->cv_shared->ci_hooks = NULL;
87
88	return ((iconv_t)(void *)handle);
89}
90
91iconv_t
92__bsd_iconv_open(const char *out, const char *in)
93{
94
95	return (__bsd___iconv_open(out, in, NULL));
96}
97
98int
99__bsd_iconv_open_into(const char *out, const char *in, iconv_allocation_t *ptr)
100{
101	struct _citrus_iconv *handle;
102
103	handle = (struct _citrus_iconv *)ptr;
104	return ((__bsd___iconv_open(out, in, handle) == (iconv_t)-1) ? -1 : 0);
105}
106
107int
108__bsd_iconv_close(iconv_t handle)
109{
110
111	if (ISBADF(handle)) {
112		errno = EBADF;
113		return (-1);
114	}
115
116	_citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
117
118	return (0);
119}
120
121size_t
122__bsd_iconv(iconv_t handle, const char **in, size_t *szin, char **out, size_t *szout)
123{
124	size_t ret;
125	int err;
126
127	if (ISBADF(handle)) {
128		errno = EBADF;
129		return ((size_t)-1);
130	}
131
132	err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
133	    in, szin, out, szout, 0, &ret);
134	if (err) {
135		errno = err;
136		ret = (size_t)-1;
137	}
138
139	return (ret);
140}
141
142size_t
143__bsd___iconv(iconv_t handle, const char **in, size_t *szin, char **out,
144    size_t *szout, uint32_t flags, size_t *invalids)
145{
146	size_t ret;
147	int err;
148
149	if (ISBADF(handle)) {
150		errno = EBADF;
151		return ((size_t)-1);
152	}
153
154	err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
155	    in, szin, out, szout, flags, &ret);
156	if (invalids)
157		*invalids = ret;
158	if (err) {
159		errno = err;
160		ret = (size_t)-1;
161	}
162
163	return (ret);
164}
165
166int
167__bsd___iconv_get_list(char ***rlist, size_t *rsz, bool sorted)
168{
169	int ret;
170
171	ret = _citrus_esdb_get_list(rlist, rsz, sorted);
172	if (ret) {
173		errno = ret;
174		return (-1);
175	}
176
177	return (0);
178}
179
180void
181__bsd___iconv_free_list(char **list, size_t sz)
182{
183
184	_citrus_esdb_free_list(list, sz);
185}
186
187/*
188 * GNU-compatibile non-standard interfaces.
189 */
190static int
191qsort_helper(const void *first, const void *second)
192{
193	const char * const *s1;
194	const char * const *s2;
195
196	s1 = first;
197	s2 = second;
198	return (strcmp(*s1, *s2));
199}
200
201void
202__bsd_iconvlist(int (*do_one) (unsigned int, const char * const *,
203    void *), void *data)
204{
205	char **list, **names;
206	const char * const *np;
207	char *curitem, *curkey, *slashpos;
208	size_t sz;
209	unsigned int i, j;
210
211	i = 0;
212
213	if (__bsd___iconv_get_list(&list, &sz, true))
214		list = NULL;
215	qsort((void *)list, sz, sizeof(char *), qsort_helper);
216	while (i < sz) {
217		j = 0;
218		slashpos = strchr(list[i], '/');
219		curkey = (char *)malloc(slashpos - list[i] + 2);
220		names = (char **)malloc(sz * sizeof(char *));
221		if ((curkey == NULL) || (names == NULL)) {
222			__bsd___iconv_free_list(list, sz);
223			return;
224		}
225		strlcpy(curkey, list[i], slashpos - list[i] + 1);
226		names[j++] = strdup(curkey);
227		for (; (i < sz) && (memcmp(curkey, list[i], strlen(curkey)) == 0); i++) {
228			slashpos = strchr(list[i], '/');
229			curitem = (char *)malloc(strlen(slashpos) + 1);
230			if (curitem == NULL) {
231				__bsd___iconv_free_list(list, sz);
232				return;
233			}
234			strlcpy(curitem, &slashpos[1], strlen(slashpos) + 1);
235			if (strcmp(curkey, curitem) == 0) {
236				continue;
237			}
238			names[j++] = strdup(curitem);
239		}
240		np = (const char * const *)names;
241		do_one(j, np, data);
242		free(names);
243	}
244
245	__bsd___iconv_free_list(list, sz);
246}
247
248__inline const char *
249__bsd_iconv_canonicalize(const char *name)
250{
251
252	return (_citrus_iconv_canonicalize(name));
253}
254
255int
256__bsd_iconvctl(iconv_t cd, int request, void *argument)
257{
258	struct _citrus_iconv *cv;
259	struct iconv_hooks *hooks;
260	const char *convname;
261	char src[PATH_MAX], *dst;
262	int *i;
263
264	cv = (struct _citrus_iconv *)(void *)cd;
265	hooks = (struct iconv_hooks *)argument;
266	i = (int *)argument;
267
268	if (ISBADF(cd)) {
269		errno = EBADF;
270		return (-1);
271	}
272
273	switch (request) {
274	case ICONV_TRIVIALP:
275		convname = cv->cv_shared->ci_convname;
276		dst = strchr(convname, '/');
277
278		strlcpy(src, convname, dst - convname + 1);
279		dst++;
280		if ((convname == NULL) || (src == NULL) || (dst == NULL))
281			return (-1);
282		*i = strcmp(src, dst) == 0 ? 1 : 0;
283		return (0);
284	case ICONV_GET_TRANSLITERATE:
285		*i = 1;
286		return (0);
287	case ICONV_SET_TRANSLITERATE:
288		return  ((*i == 1) ? 0 : -1);
289	case ICONV_GET_DISCARD_ILSEQ:
290		*i = cv->cv_shared->ci_discard_ilseq ? 1 : 0;
291		return (0);
292	case ICONV_SET_DISCARD_ILSEQ:
293		cv->cv_shared->ci_discard_ilseq = *i;
294		return (0);
295	case ICONV_SET_HOOKS:
296		cv->cv_shared->ci_hooks = hooks;
297		return (0);
298	case ICONV_SET_FALLBACKS:
299		errno = EOPNOTSUPP;
300		return (-1);
301	case ICONV_GET_ILSEQ_INVALID:
302		*i = cv->cv_shared->ci_ilseq_invalid ? 1 : 0;
303		return (0);
304	case ICONV_SET_ILSEQ_INVALID:
305		cv->cv_shared->ci_ilseq_invalid = *i;
306		return (0);
307	default:
308		errno = EINVAL;
309		return (-1);
310	}
311}
312
313void
314__bsd_iconv_set_relocation_prefix(const char *orig_prefix __unused,
315    const char *curr_prefix __unused)
316{
317
318}
319