1 /* $FreeBSD: head/lib/libc/iconv/iconv.c 254273 2013-08-13 07:15:01Z peter $ */
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/citrus_types.h"
45 #include "../citrus/citrus_module.h"
46 #include "../citrus/citrus_esdb.h"
47 #include "../citrus/citrus_hash.h"
48 #include "../citrus/citrus_iconv.h"
49
50 #define ISBADF(_h_) (!(_h_) || (_h_) == (iconv_t)-1)
51
52 int _iconv_version = _ICONV_VERSION;
53
54 iconv_t _iconv_open(const char *out, const char *in,
55 struct _citrus_iconv *prealloc);
56
57 iconv_t
_iconv_open(const char * out,const char * in,struct _citrus_iconv * handle)58 _iconv_open(const char *out, const char *in, struct _citrus_iconv *handle)
59 {
60 const char *out_slashes;
61 char *out_noslashes;
62 int ret;
63
64 /*
65 * Remove anything following a //, as these are options (like
66 * //ignore, //translate, etc) and we just don't handle them.
67 * This is for compatibility with software that uses these
68 * blindly.
69 */
70 out_slashes = strstr(out, "//");
71 if (out_slashes != NULL) {
72 out_noslashes = strndup(out, out_slashes - out);
73 if (out_noslashes == NULL) {
74 errno = ENOMEM;
75 return ((iconv_t)-1);
76 }
77 ret = _citrus_iconv_open(&handle, in, out_noslashes);
78 free(out_noslashes);
79 } else {
80 ret = _citrus_iconv_open(&handle, in, out);
81 }
82
83 if (ret) {
84 errno = ret == ENOENT ? EINVAL : ret;
85 return ((iconv_t)-1);
86 }
87
88 handle->cv_shared->ci_discard_ilseq = strcasestr(out, "//IGNORE");
89 handle->cv_shared->ci_ilseq_invalid = false;
90 handle->cv_shared->ci_hooks = NULL;
91
92 return ((iconv_t)(void *)handle);
93 }
94
95 iconv_t
iconv_open(const char * out,const char * in)96 iconv_open(const char *out, const char *in)
97 {
98
99 return (_iconv_open(out, in, NULL));
100 }
101
102 int
iconv_open_into(const char * out,const char * in,iconv_allocation_t * ptr)103 iconv_open_into(const char *out, const char *in, iconv_allocation_t *ptr)
104 {
105 struct _citrus_iconv *handle;
106
107 handle = (struct _citrus_iconv *)ptr;
108 return ((_iconv_open(out, in, handle) == (iconv_t)-1) ? -1 : 0);
109 }
110
111 int
iconv_close(iconv_t handle)112 iconv_close(iconv_t handle)
113 {
114
115 if (ISBADF(handle)) {
116 errno = EBADF;
117 return (-1);
118 }
119
120 _citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
121
122 return (0);
123 }
124
125 size_t
iconv(iconv_t handle,char ** in,size_t * szin,char ** out,size_t * szout)126 iconv(iconv_t handle, char **in, size_t *szin, char **out, size_t *szout)
127 {
128 size_t ret;
129 int err;
130
131 if (ISBADF(handle)) {
132 errno = EBADF;
133 return ((size_t)-1);
134 }
135
136 err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
137 in, szin, out, szout, 0, &ret);
138 if (err) {
139 errno = err;
140 ret = (size_t)-1;
141 }
142
143 return (ret);
144 }
145
146 size_t
__iconv(iconv_t handle,char ** in,size_t * szin,char ** out,size_t * szout,uint32_t flags,size_t * invalids)147 __iconv(iconv_t handle, char **in, size_t *szin, char **out,
148 size_t *szout, uint32_t flags, size_t *invalids)
149 {
150 size_t ret;
151 int err;
152
153 if (ISBADF(handle)) {
154 errno = EBADF;
155 return ((size_t)-1);
156 }
157
158 err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
159 in, szin, out, szout, flags, &ret);
160 if (invalids)
161 *invalids = ret;
162 if (err) {
163 errno = err;
164 ret = (size_t)-1;
165 }
166
167 return (ret);
168 }
169
170 int
__iconv_get_list(char *** rlist,size_t * rsz,bool sorted)171 __iconv_get_list(char ***rlist, size_t *rsz, bool sorted)
172 {
173 int ret;
174
175 ret = _citrus_esdb_get_list(rlist, rsz, sorted);
176 if (ret) {
177 errno = ret;
178 return (-1);
179 }
180
181 return (0);
182 }
183
184 void
__iconv_free_list(char ** list,size_t sz)185 __iconv_free_list(char **list, size_t sz)
186 {
187
188 _citrus_esdb_free_list(list, sz);
189 }
190
191 /*
192 * GNU-compatibile non-standard interfaces.
193 */
194 static int
qsort_helper(const void * first,const void * second)195 qsort_helper(const void *first, const void *second)
196 {
197 const char * const *s1;
198 const char * const *s2;
199
200 s1 = first;
201 s2 = second;
202 return (strcmp(*s1, *s2));
203 }
204
205 void
iconvlist(int (* do_one)(unsigned int,const char * const *,void *),void * data)206 iconvlist(int (*do_one) (unsigned int, const char * const *,
207 void *), void *data)
208 {
209 char **list, **names;
210 const char * const *np;
211 char *curitem, *curkey, *slashpos;
212 size_t sz;
213 unsigned int i, j;
214
215 i = 0;
216
217 if (__iconv_get_list(&list, &sz, true))
218 list = NULL;
219 qsort((void *)list, sz, sizeof(char *), qsort_helper);
220 while (i < sz) {
221 j = 0;
222 slashpos = strchr(list[i], '/');
223 curkey = (char *)malloc(slashpos - list[i] + 2);
224 names = (char **)malloc(sz * sizeof(char *));
225 if ((curkey == NULL) || (names == NULL)) {
226 __iconv_free_list(list, sz);
227 return;
228 }
229 strlcpy(curkey, list[i], slashpos - list[i] + 1);
230 names[j++] = curkey;
231 for (; (i < sz) && (memcmp(curkey, list[i], strlen(curkey)) == 0); i++) {
232 slashpos = strchr(list[i], '/');
233 curitem = (char *)malloc(strlen(slashpos) + 1);
234 if (curitem == NULL) {
235 __iconv_free_list(list, sz);
236 return;
237 }
238 strlcpy(curitem, &slashpos[1], strlen(slashpos) + 1);
239 if (strcmp(curkey, curitem) == 0) {
240 continue;
241 }
242 names[j++] = curitem;
243 }
244 np = (const char * const *)names;
245 do_one(j, np, data);
246 free(names);
247 }
248
249 __iconv_free_list(list, sz);
250 }
251
252 __inline const char
iconv_canonicalize(const char * name)253 *iconv_canonicalize(const char *name)
254 {
255
256 return (_citrus_iconv_canonicalize(name));
257 }
258
259 int
iconvctl(iconv_t cd,int request,void * argument)260 iconvctl(iconv_t cd, int request, void *argument)
261 {
262 struct _citrus_iconv *cv;
263 struct iconv_hooks *hooks;
264 const char *convname;
265 char src[PATH_MAX], *dst;
266 int *i;
267
268 cv = (struct _citrus_iconv *)(void *)cd;
269 hooks = (struct iconv_hooks *)argument;
270 i = (int *)argument;
271
272 if (ISBADF(cd)) {
273 errno = EBADF;
274 return (-1);
275 }
276
277 switch (request) {
278 case ICONV_TRIVIALP:
279 convname = cv->cv_shared->ci_convname;
280 dst = strchr(convname, '/');
281
282 strlcpy(src, convname, dst - convname + 1);
283 dst++;
284 if ((convname == NULL) || (src == NULL) || (dst == NULL))
285 return (-1);
286 *i = strcmp(src, dst) == 0 ? 1 : 0;
287 return (0);
288 case ICONV_GET_TRANSLITERATE:
289 *i = 1;
290 return (0);
291 case ICONV_SET_TRANSLITERATE:
292 return ((*i == 1) ? 0 : -1);
293 case ICONV_GET_DISCARD_ILSEQ:
294 *i = cv->cv_shared->ci_discard_ilseq ? 1 : 0;
295 return (0);
296 case ICONV_SET_DISCARD_ILSEQ:
297 cv->cv_shared->ci_discard_ilseq = *i;
298 return (0);
299 case ICONV_SET_HOOKS:
300 cv->cv_shared->ci_hooks = hooks;
301 return (0);
302 case ICONV_SET_FALLBACKS:
303 errno = EOPNOTSUPP;
304 return (-1);
305 case ICONV_GET_ILSEQ_INVALID:
306 *i = cv->cv_shared->ci_ilseq_invalid ? 1 : 0;
307 return (0);
308 case ICONV_SET_ILSEQ_INVALID:
309 cv->cv_shared->ci_ilseq_invalid = *i;
310 return (0);
311 default:
312 errno = EINVAL;
313 return (-1);
314 }
315 }
316
317 void
iconv_set_relocation_prefix(const char * orig_prefix __unused,const char * curr_prefix __unused)318 iconv_set_relocation_prefix(const char *orig_prefix __unused,
319 const char *curr_prefix __unused)
320 {
321
322 }
323