1 /* $FreeBSD$ */
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
54 static iconv_t
__bsd___iconv_open(const char * out,const char * in,struct _citrus_iconv * handle)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_ilseq_invalid = false;
87 handle->cv_shared->ci_hooks = NULL;
88
89 return ((iconv_t)(void *)handle);
90 }
91
92 iconv_t
__bsd_iconv_open(const char * out,const char * in)93 __bsd_iconv_open(const char *out, const char *in)
94 {
95
96 return (__bsd___iconv_open(out, in, NULL));
97 }
98
99 int
__bsd_iconv_open_into(const char * out,const char * in,iconv_allocation_t * ptr)100 __bsd_iconv_open_into(const char *out, const char *in, iconv_allocation_t *ptr)
101 {
102 struct _citrus_iconv *handle;
103
104 handle = (struct _citrus_iconv *)ptr;
105 return ((__bsd___iconv_open(out, in, handle) == (iconv_t)-1) ? -1 : 0);
106 }
107
108 int
__bsd_iconv_close(iconv_t handle)109 __bsd_iconv_close(iconv_t handle)
110 {
111
112 if (ISBADF(handle)) {
113 errno = EBADF;
114 return (-1);
115 }
116
117 _citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
118
119 return (0);
120 }
121
122 size_t
__bsd_iconv(iconv_t handle,char ** in,size_t * szin,char ** out,size_t * szout)123 __bsd_iconv(iconv_t handle, char **in, size_t *szin, char **out, size_t *szout)
124 {
125 size_t ret;
126 int err;
127
128 if (ISBADF(handle)) {
129 errno = EBADF;
130 return ((size_t)-1);
131 }
132
133 err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
134 in, szin, out, szout, 0, &ret);
135 if (err) {
136 errno = err;
137 ret = (size_t)-1;
138 }
139
140 return (ret);
141 }
142
143 size_t
__bsd___iconv(iconv_t handle,char ** in,size_t * szin,char ** out,size_t * szout,uint32_t flags,size_t * invalids)144 __bsd___iconv(iconv_t handle, char **in, size_t *szin, char **out,
145 size_t *szout, uint32_t flags, size_t *invalids)
146 {
147 size_t ret;
148 int err;
149
150 if (ISBADF(handle)) {
151 errno = EBADF;
152 return ((size_t)-1);
153 }
154
155 err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
156 in, szin, out, szout, flags, &ret);
157 if (invalids)
158 *invalids = ret;
159 if (err) {
160 errno = err;
161 ret = (size_t)-1;
162 }
163
164 return (ret);
165 }
166
167 int
__bsd___iconv_get_list(char *** rlist,size_t * rsz,bool sorted)168 __bsd___iconv_get_list(char ***rlist, size_t *rsz, bool sorted)
169 {
170 int ret;
171
172 ret = _citrus_esdb_get_list(rlist, rsz, sorted);
173 if (ret) {
174 errno = ret;
175 return (-1);
176 }
177
178 return (0);
179 }
180
181 void
__bsd___iconv_free_list(char ** list,size_t sz)182 __bsd___iconv_free_list(char **list, size_t sz)
183 {
184
185 _citrus_esdb_free_list(list, sz);
186 }
187
188 /*
189 * GNU-compatibile non-standard interfaces.
190 */
191 static int
qsort_helper(const void * first,const void * second)192 qsort_helper(const void *first, const void *second)
193 {
194 const char * const *s1;
195 const char * const *s2;
196
197 s1 = first;
198 s2 = second;
199 return (strcmp(*s1, *s2));
200 }
201
202 void
__bsd_iconvlist(int (* do_one)(unsigned int,const char * const *,void *),void * data)203 __bsd_iconvlist(int (*do_one) (unsigned int, const char * const *,
204 void *), void *data)
205 {
206 char **list, **names;
207 const char * const *np;
208 char *curitem, *curkey, *slashpos;
209 size_t sz;
210 unsigned int i, j, n;
211
212 i = 0;
213 names = NULL;
214
215 if (__bsd___iconv_get_list(&list, &sz, true)) {
216 list = NULL;
217 goto out;
218 }
219 qsort((void *)list, sz, sizeof(char *), qsort_helper);
220 while (i < sz) {
221 j = 0;
222 slashpos = strchr(list[i], '/');
223 names = malloc(sz * sizeof(char *));
224 if (names == NULL)
225 goto out;
226 curkey = strndup(list[i], slashpos - list[i]);
227 if (curkey == NULL)
228 goto out;
229 names[j++] = curkey;
230 for (; (i < sz) && (memcmp(curkey, list[i], strlen(curkey)) == 0); i++) {
231 slashpos = strchr(list[i], '/');
232 if (strcmp(curkey, &slashpos[1]) == 0)
233 continue;
234 curitem = strdup(&slashpos[1]);
235 if (curitem == NULL)
236 goto out;
237 names[j++] = curitem;
238 }
239 np = (const char * const *)names;
240 do_one(j, np, data);
241 for (n = 0; n < j; n++)
242 free(names[n]);
243 free(names);
244 names = NULL;
245 }
246
247 out:
248 if (names != NULL) {
249 for (n = 0; n < j; n++)
250 free(names[n]);
251 free(names);
252 }
253 if (list != NULL)
254 __bsd___iconv_free_list(list, sz);
255 }
256
257 __inline const char *
__bsd_iconv_canonicalize(const char * name)258 __bsd_iconv_canonicalize(const char *name)
259 {
260
261 return (_citrus_iconv_canonicalize(name));
262 }
263
264 int
__bsd_iconvctl(iconv_t cd,int request,void * argument)265 __bsd_iconvctl(iconv_t cd, int request, void *argument)
266 {
267 struct _citrus_iconv *cv;
268 struct iconv_hooks *hooks;
269 const char *convname;
270 char src[PATH_MAX], *dst;
271 int *i;
272
273 cv = (struct _citrus_iconv *)(void *)cd;
274 hooks = (struct iconv_hooks *)argument;
275 i = (int *)argument;
276
277 if (ISBADF(cd)) {
278 errno = EBADF;
279 return (-1);
280 }
281
282 switch (request) {
283 case ICONV_TRIVIALP:
284 convname = cv->cv_shared->ci_convname;
285 dst = strchr(convname, '/');
286
287 strlcpy(src, convname, dst - convname + 1);
288 dst++;
289 if ((convname == NULL) || (src == NULL) || (dst == NULL))
290 return (-1);
291 *i = strcmp(src, dst) == 0 ? 1 : 0;
292 return (0);
293 case ICONV_GET_TRANSLITERATE:
294 *i = 1;
295 return (0);
296 case ICONV_SET_TRANSLITERATE:
297 return ((*i == 1) ? 0 : -1);
298 case ICONV_GET_DISCARD_ILSEQ:
299 *i = cv->cv_shared->ci_discard_ilseq ? 1 : 0;
300 return (0);
301 case ICONV_SET_DISCARD_ILSEQ:
302 cv->cv_shared->ci_discard_ilseq = *i;
303 return (0);
304 case ICONV_SET_HOOKS:
305 cv->cv_shared->ci_hooks = hooks;
306 return (0);
307 case ICONV_SET_FALLBACKS:
308 errno = EOPNOTSUPP;
309 return (-1);
310 case ICONV_GET_ILSEQ_INVALID:
311 *i = cv->cv_shared->ci_ilseq_invalid ? 1 : 0;
312 return (0);
313 case ICONV_SET_ILSEQ_INVALID:
314 cv->cv_shared->ci_ilseq_invalid = *i;
315 return (0);
316 default:
317 errno = EINVAL;
318 return (-1);
319 }
320 }
321
322 void
__bsd_iconv_set_relocation_prefix(const char * orig_prefix __unused,const char * curr_prefix __unused)323 __bsd_iconv_set_relocation_prefix(const char *orig_prefix __unused,
324 const char *curr_prefix __unused)
325 {
326
327 }
328