2 * Copyright (c) 2000-2001, Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/iconv.h>
40 #include <sys/malloc.h>
41 #include <sys/mount.h>
43 #include <sys/syslog.h>
45 #include "iconv_converter_if.h"
47 SYSCTL_DECL(_kern_iconv);
49 SYSCTL_NODE(_kern, OID_AUTO, iconv, CTLFLAG_RW, NULL, "kernel iconv interface");
51 MALLOC_DEFINE(M_ICONV, "iconv", "ICONV structures");
52 MALLOC_DEFINE(M_ICONVDATA, "iconv_data", "ICONV data");
54 MODULE_VERSION(libiconv, 2);
56 static struct sx iconv_lock;
60 * iconv converter instance
62 struct iconv_converter {
68 struct sysctl_oid *iconv_oid_hook = &sysctl___kern_iconv;
71 * List of loaded converters
73 static TAILQ_HEAD(iconv_converter_list, iconv_converter_class)
74 iconv_converters = TAILQ_HEAD_INITIALIZER(iconv_converters);
77 * List of supported/loaded charsets pairs
79 static TAILQ_HEAD(, iconv_cspair)
80 iconv_cslist = TAILQ_HEAD_INITIALIZER(iconv_cslist);
81 static int iconv_csid = 1;
83 static char iconv_unicode_string[] = "unicode"; /* save eight bytes when possible */
85 static void iconv_unregister_cspair(struct iconv_cspair *csp);
88 iconv_mod_unload(void)
90 struct iconv_cspair *csp;
92 sx_xlock(&iconv_lock);
93 while ((csp = TAILQ_FIRST(&iconv_cslist)) != NULL) {
98 while ((csp = TAILQ_FIRST(&iconv_cslist)) != NULL)
99 iconv_unregister_cspair(csp);
100 sx_xunlock(&iconv_lock);
101 sx_destroy(&iconv_lock);
106 iconv_mod_handler(module_t mod, int type, void *data)
113 sx_init(&iconv_lock, "iconv");
116 error = iconv_mod_unload();
124 static moduledata_t iconv_mod = {
125 "iconv", iconv_mod_handler, NULL
128 DECLARE_MODULE(iconv, iconv_mod, SI_SUB_DRIVERS, SI_ORDER_SECOND);
131 iconv_register_converter(struct iconv_converter_class *dcp)
133 kobj_class_compile((struct kobj_class*)dcp);
135 TAILQ_INSERT_TAIL(&iconv_converters, dcp, cc_link);
140 iconv_unregister_converter(struct iconv_converter_class *dcp)
143 ICDEBUG("converter have %d referenses left\n", dcp->refs);
146 TAILQ_REMOVE(&iconv_converters, dcp, cc_link);
147 kobj_class_free((struct kobj_class*)dcp);
152 iconv_lookupconv(const char *name, struct iconv_converter_class **dcpp)
154 struct iconv_converter_class *dcp;
156 TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
159 if (strcmp(name, ICONV_CONVERTER_NAME(dcp)) == 0) {
169 iconv_lookupcs(const char *to, const char *from, struct iconv_cspair **cspp)
171 struct iconv_cspair *csp;
173 TAILQ_FOREACH(csp, &iconv_cslist, cp_link) {
174 if (strcmp(csp->cp_to, to) == 0 &&
175 strcmp(csp->cp_from, from) == 0) {
185 iconv_register_cspair(const char *to, const char *from,
186 struct iconv_converter_class *dcp, void *data,
187 struct iconv_cspair **cspp)
189 struct iconv_cspair *csp;
191 int csize, ucsto, ucsfrom;
193 if (iconv_lookupcs(to, from, NULL) == 0)
195 csize = sizeof(*csp);
196 ucsto = strcmp(to, iconv_unicode_string) == 0;
198 csize += strlen(to) + 1;
199 ucsfrom = strcmp(from, iconv_unicode_string) == 0;
201 csize += strlen(from) + 1;
202 csp = malloc(csize, M_ICONV, M_WAITOK);
204 csp->cp_id = iconv_csid++;
206 cp = (char*)(csp + 1);
210 cp += strlen(cp) + 1;
212 csp->cp_to = iconv_unicode_string;
217 csp->cp_from = iconv_unicode_string;
220 TAILQ_INSERT_TAIL(&iconv_cslist, csp, cp_link);
226 iconv_unregister_cspair(struct iconv_cspair *csp)
228 TAILQ_REMOVE(&iconv_cslist, csp, cp_link);
230 free(csp->cp_data, M_ICONVDATA);
235 * Lookup and create an instance of converter.
236 * Currently this layer didn't have associated 'instance' structure
237 * to avoid unnesessary memory allocation.
240 iconv_open(const char *to, const char *from, void **handle)
242 struct iconv_cspair *csp, *cspfrom, *cspto;
243 struct iconv_converter_class *dcp;
248 * First, lookup fully qualified cspairs
250 error = iconv_lookupcs(to, from, &csp);
252 return ICONV_CONVERTER_OPEN(csp->cp_dcp, csp, NULL, handle);
255 * Well, nothing found. Now try to construct a composite conversion
256 * ToDo: add a 'capability' field to converter
258 TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
259 cnvname = ICONV_CONVERTER_NAME(dcp);
262 error = iconv_lookupcs(cnvname, from, &cspfrom);
265 error = iconv_lookupcs(to, cnvname, &cspto);
269 * Fine, we're found a pair which can be combined together
271 return ICONV_CONVERTER_OPEN(dcp, cspto, cspfrom, handle);
277 iconv_close(void *handle)
279 return ICONV_CONVERTER_CLOSE(handle);
283 iconv_conv(void *handle, const char **inbuf,
284 size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
286 return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 0, 0);
290 iconv_conv_case(void *handle, const char **inbuf,
291 size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype)
293 return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 0, casetype);
297 iconv_convchr(void *handle, const char **inbuf,
298 size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
300 return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 1, 0);
304 iconv_convchr_case(void *handle, const char **inbuf,
305 size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype)
307 return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 1, casetype);
311 * Give a list of loaded converters. Each name terminated with 0.
312 * An empty string terminates the list.
315 iconv_sysctl_drvlist(SYSCTL_HANDLER_ARGS)
317 struct iconv_converter_class *dcp;
323 sx_slock(&iconv_lock);
324 TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
325 name = ICONV_CONVERTER_NAME(dcp);
328 error = SYSCTL_OUT(req, name, strlen(name) + 1);
332 sx_sunlock(&iconv_lock);
336 error = SYSCTL_OUT(req, &spc, sizeof(spc));
340 SYSCTL_PROC(_kern_iconv, OID_AUTO, drvlist, CTLFLAG_RD | CTLTYPE_OPAQUE,
341 NULL, 0, iconv_sysctl_drvlist, "S,xlat", "registered converters");
344 * List all available charset pairs.
347 iconv_sysctl_cslist(SYSCTL_HANDLER_ARGS)
349 struct iconv_cspair *csp;
350 struct iconv_cspair_info csi;
354 bzero(&csi, sizeof(csi));
355 csi.cs_version = ICONV_CSPAIR_INFO_VER;
356 sx_slock(&iconv_lock);
357 TAILQ_FOREACH(csp, &iconv_cslist, cp_link) {
358 csi.cs_id = csp->cp_id;
359 csi.cs_refcount = csp->cp_refcount;
360 csi.cs_base = csp->cp_base ? csp->cp_base->cp_id : 0;
361 strcpy(csi.cs_to, csp->cp_to);
362 strcpy(csi.cs_from, csp->cp_from);
363 error = SYSCTL_OUT(req, &csi, sizeof(csi));
367 sx_sunlock(&iconv_lock);
371 SYSCTL_PROC(_kern_iconv, OID_AUTO, cslist, CTLFLAG_RD | CTLTYPE_OPAQUE,
372 NULL, 0, iconv_sysctl_cslist, "S,xlat", "registered charset pairs");
375 * Add new charset pair
378 iconv_sysctl_add(SYSCTL_HANDLER_ARGS)
380 struct iconv_converter_class *dcp;
381 struct iconv_cspair *csp;
382 struct iconv_add_in din;
383 struct iconv_add_out dout;
386 error = SYSCTL_IN(req, &din, sizeof(din));
389 if (din.ia_version != ICONV_ADD_VER)
391 if (din.ia_datalen > ICONV_CSMAXDATALEN)
393 if (strlen(din.ia_from) >= ICONV_CSNMAXLEN)
395 if (strlen(din.ia_to) >= ICONV_CSNMAXLEN)
397 if (strlen(din.ia_converter) >= ICONV_CNVNMAXLEN)
399 if (iconv_lookupconv(din.ia_converter, &dcp) != 0)
401 sx_xlock(&iconv_lock);
402 error = iconv_register_cspair(din.ia_to, din.ia_from, dcp, NULL, &csp);
404 sx_xunlock(&iconv_lock);
407 if (din.ia_datalen) {
408 csp->cp_data = malloc(din.ia_datalen, M_ICONVDATA, M_WAITOK);
409 error = copyin(din.ia_data, csp->cp_data, din.ia_datalen);
413 dout.ia_csid = csp->cp_id;
414 error = SYSCTL_OUT(req, &dout, sizeof(dout));
417 sx_xunlock(&iconv_lock);
418 ICDEBUG("%s => %s, %d bytes\n",din.ia_from, din.ia_to, din.ia_datalen);
421 iconv_unregister_cspair(csp);
422 sx_xunlock(&iconv_lock);
426 SYSCTL_PROC(_kern_iconv, OID_AUTO, add, CTLFLAG_RW | CTLTYPE_OPAQUE,
427 NULL, 0, iconv_sysctl_add, "S,xlat", "register charset pair");
430 * Default stubs for converters
433 iconv_converter_initstub(struct iconv_converter_class *dp)
439 iconv_converter_donestub(struct iconv_converter_class *dp)
445 iconv_converter_handler(module_t mod, int type, void *data)
447 struct iconv_converter_class *dcp = data;
452 sx_xlock(&iconv_lock);
453 error = iconv_register_converter(dcp);
455 sx_xunlock(&iconv_lock);
458 error = ICONV_CONVERTER_INIT(dcp);
460 iconv_unregister_converter(dcp);
461 sx_xunlock(&iconv_lock);
464 sx_xlock(&iconv_lock);
465 ICONV_CONVERTER_DONE(dcp);
466 error = iconv_unregister_converter(dcp);
467 sx_xunlock(&iconv_lock);
476 * Common used functions (don't use with unicode)
479 iconv_convstr(void *handle, char *dst, const char *src)
482 size_t inlen, outlen;
485 if (handle == NULL) {
489 inlen = outlen = strlen(src);
490 error = iconv_conv(handle, NULL, NULL, &p, &outlen);
493 error = iconv_conv(handle, &src, &inlen, &p, &outlen);
501 iconv_convmem(void *handle, void *dst, const void *src, int size)
505 size_t inlen, outlen;
510 if (handle == NULL) {
511 memcpy(dst, src, size);
514 inlen = outlen = size;
515 error = iconv_conv(handle, NULL, NULL, &d, &outlen);
518 error = iconv_conv(handle, &s, &inlen, &d, &outlen);
525 iconv_lookupcp(char **cpp, const char *s)
528 ICDEBUG("warning a NULL list passed\n", ""); /* XXX ISO variadic macros cannot
534 if (strcmp(*cpp, s) == 0)
540 * Return if fsname is in use of not
543 iconv_vfs_refcount(const char *fsname)
545 struct vfsconf *vfsp;
547 vfsp = vfs_byname(fsname);
548 if (vfsp != NULL && vfsp->vfc_refcount > 0)