8a36da99de
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.
579 lines
13 KiB
C
579 lines
13 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2000-2001 Boris Popov
|
|
* 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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/iconv.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/sx.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include "iconv_converter_if.h"
|
|
|
|
SYSCTL_DECL(_kern_iconv);
|
|
|
|
SYSCTL_NODE(_kern, OID_AUTO, iconv, CTLFLAG_RW, NULL, "kernel iconv interface");
|
|
|
|
MALLOC_DEFINE(M_ICONV, "iconv", "ICONV structures");
|
|
static MALLOC_DEFINE(M_ICONVDATA, "iconv_data", "ICONV data");
|
|
|
|
MODULE_VERSION(libiconv, 2);
|
|
|
|
static struct sx iconv_lock;
|
|
|
|
#ifdef notnow
|
|
/*
|
|
* iconv converter instance
|
|
*/
|
|
struct iconv_converter {
|
|
KOBJ_FIELDS;
|
|
void * c_data;
|
|
};
|
|
#endif
|
|
|
|
struct sysctl_oid *iconv_oid_hook = &sysctl___kern_iconv;
|
|
|
|
/*
|
|
* List of loaded converters
|
|
*/
|
|
static TAILQ_HEAD(iconv_converter_list, iconv_converter_class)
|
|
iconv_converters = TAILQ_HEAD_INITIALIZER(iconv_converters);
|
|
|
|
/*
|
|
* List of supported/loaded charsets pairs
|
|
*/
|
|
static TAILQ_HEAD(, iconv_cspair)
|
|
iconv_cslist = TAILQ_HEAD_INITIALIZER(iconv_cslist);
|
|
static int iconv_csid = 1;
|
|
|
|
static char iconv_unicode_string[] = "unicode"; /* save eight bytes when possible */
|
|
|
|
static void iconv_unregister_cspair(struct iconv_cspair *csp);
|
|
|
|
static int
|
|
iconv_mod_unload(void)
|
|
{
|
|
struct iconv_cspair *csp;
|
|
|
|
sx_xlock(&iconv_lock);
|
|
TAILQ_FOREACH(csp, &iconv_cslist, cp_link) {
|
|
if (csp->cp_refcount) {
|
|
sx_xunlock(&iconv_lock);
|
|
return EBUSY;
|
|
}
|
|
}
|
|
|
|
while ((csp = TAILQ_FIRST(&iconv_cslist)) != NULL)
|
|
iconv_unregister_cspair(csp);
|
|
sx_xunlock(&iconv_lock);
|
|
sx_destroy(&iconv_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iconv_mod_handler(module_t mod, int type, void *data)
|
|
{
|
|
int error;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
error = 0;
|
|
sx_init(&iconv_lock, "iconv");
|
|
break;
|
|
case MOD_UNLOAD:
|
|
error = iconv_mod_unload();
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static moduledata_t iconv_mod = {
|
|
"iconv", iconv_mod_handler, NULL
|
|
};
|
|
|
|
DECLARE_MODULE(iconv, iconv_mod, SI_SUB_DRIVERS, SI_ORDER_SECOND);
|
|
|
|
static int
|
|
iconv_register_converter(struct iconv_converter_class *dcp)
|
|
{
|
|
kobj_class_compile((struct kobj_class*)dcp);
|
|
dcp->refs++;
|
|
TAILQ_INSERT_TAIL(&iconv_converters, dcp, cc_link);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iconv_unregister_converter(struct iconv_converter_class *dcp)
|
|
{
|
|
dcp->refs--;
|
|
if (dcp->refs > 1) {
|
|
ICDEBUG("converter has %d references left\n", dcp->refs);
|
|
return EBUSY;
|
|
}
|
|
TAILQ_REMOVE(&iconv_converters, dcp, cc_link);
|
|
kobj_class_free((struct kobj_class*)dcp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
iconv_lookupconv(const char *name, struct iconv_converter_class **dcpp)
|
|
{
|
|
struct iconv_converter_class *dcp;
|
|
|
|
TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
|
|
if (name == NULL)
|
|
continue;
|
|
if (strcmp(name, ICONV_CONVERTER_NAME(dcp)) == 0) {
|
|
if (dcpp)
|
|
*dcpp = dcp;
|
|
return 0;
|
|
}
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
static int
|
|
iconv_lookupcs(const char *to, const char *from, struct iconv_cspair **cspp)
|
|
{
|
|
struct iconv_cspair *csp;
|
|
|
|
TAILQ_FOREACH(csp, &iconv_cslist, cp_link) {
|
|
if (strcasecmp(csp->cp_to, to) == 0 &&
|
|
strcasecmp(csp->cp_from, from) == 0) {
|
|
if (cspp)
|
|
*cspp = csp;
|
|
return 0;
|
|
}
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
static int
|
|
iconv_register_cspair(const char *to, const char *from,
|
|
struct iconv_converter_class *dcp, void *data,
|
|
struct iconv_cspair **cspp)
|
|
{
|
|
struct iconv_cspair *csp;
|
|
char *cp;
|
|
int csize, ucsto, ucsfrom;
|
|
|
|
if (iconv_lookupcs(to, from, NULL) == 0)
|
|
return EEXIST;
|
|
csize = sizeof(*csp);
|
|
ucsto = strcmp(to, iconv_unicode_string) == 0;
|
|
if (!ucsto)
|
|
csize += strlen(to) + 1;
|
|
ucsfrom = strcmp(from, iconv_unicode_string) == 0;
|
|
if (!ucsfrom)
|
|
csize += strlen(from) + 1;
|
|
csp = malloc(csize, M_ICONV, M_WAITOK);
|
|
bzero(csp, csize);
|
|
csp->cp_id = iconv_csid++;
|
|
csp->cp_dcp = dcp;
|
|
cp = (char*)(csp + 1);
|
|
if (!ucsto) {
|
|
strcpy(cp, to);
|
|
csp->cp_to = cp;
|
|
cp += strlen(cp) + 1;
|
|
} else
|
|
csp->cp_to = iconv_unicode_string;
|
|
if (!ucsfrom) {
|
|
strcpy(cp, from);
|
|
csp->cp_from = cp;
|
|
} else
|
|
csp->cp_from = iconv_unicode_string;
|
|
csp->cp_data = data;
|
|
|
|
TAILQ_INSERT_TAIL(&iconv_cslist, csp, cp_link);
|
|
*cspp = csp;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
iconv_unregister_cspair(struct iconv_cspair *csp)
|
|
{
|
|
TAILQ_REMOVE(&iconv_cslist, csp, cp_link);
|
|
if (csp->cp_data)
|
|
free(csp->cp_data, M_ICONVDATA);
|
|
free(csp, M_ICONV);
|
|
}
|
|
|
|
/*
|
|
* Lookup and create an instance of converter.
|
|
* Currently this layer didn't have associated 'instance' structure
|
|
* to avoid unnesessary memory allocation.
|
|
*/
|
|
int
|
|
iconv_open(const char *to, const char *from, void **handle)
|
|
{
|
|
struct iconv_cspair *csp, *cspfrom, *cspto;
|
|
struct iconv_converter_class *dcp;
|
|
const char *cnvname;
|
|
int error;
|
|
|
|
/*
|
|
* First, lookup fully qualified cspairs
|
|
*/
|
|
error = iconv_lookupcs(to, from, &csp);
|
|
if (error == 0)
|
|
return ICONV_CONVERTER_OPEN(csp->cp_dcp, csp, NULL, handle);
|
|
|
|
/*
|
|
* Well, nothing found. Now try to construct a composite conversion
|
|
* ToDo: add a 'capability' field to converter
|
|
*/
|
|
TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
|
|
cnvname = ICONV_CONVERTER_NAME(dcp);
|
|
if (cnvname == NULL)
|
|
continue;
|
|
error = iconv_lookupcs(cnvname, from, &cspfrom);
|
|
if (error)
|
|
continue;
|
|
error = iconv_lookupcs(to, cnvname, &cspto);
|
|
if (error)
|
|
continue;
|
|
/*
|
|
* Fine, we're found a pair which can be combined together
|
|
*/
|
|
return ICONV_CONVERTER_OPEN(dcp, cspto, cspfrom, handle);
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
int
|
|
iconv_close(void *handle)
|
|
{
|
|
return ICONV_CONVERTER_CLOSE(handle);
|
|
}
|
|
|
|
int
|
|
iconv_conv(void *handle, const char **inbuf,
|
|
size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
|
|
{
|
|
return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 0, 0);
|
|
}
|
|
|
|
int
|
|
iconv_conv_case(void *handle, const char **inbuf,
|
|
size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype)
|
|
{
|
|
return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 0, casetype);
|
|
}
|
|
|
|
int
|
|
iconv_convchr(void *handle, const char **inbuf,
|
|
size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
|
|
{
|
|
return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 1, 0);
|
|
}
|
|
|
|
int
|
|
iconv_convchr_case(void *handle, const char **inbuf,
|
|
size_t *inbytesleft, char **outbuf, size_t *outbytesleft, int casetype)
|
|
{
|
|
return ICONV_CONVERTER_CONV(handle, inbuf, inbytesleft, outbuf, outbytesleft, 1, casetype);
|
|
}
|
|
|
|
int
|
|
towlower(int c, void *handle)
|
|
{
|
|
return ICONV_CONVERTER_TOLOWER(handle, c);
|
|
}
|
|
|
|
int
|
|
towupper(int c, void *handle)
|
|
{
|
|
return ICONV_CONVERTER_TOUPPER(handle, c);
|
|
}
|
|
|
|
/*
|
|
* Give a list of loaded converters. Each name terminated with 0.
|
|
* An empty string terminates the list.
|
|
*/
|
|
static int
|
|
iconv_sysctl_drvlist(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct iconv_converter_class *dcp;
|
|
const char *name;
|
|
char spc;
|
|
int error;
|
|
|
|
error = 0;
|
|
sx_slock(&iconv_lock);
|
|
TAILQ_FOREACH(dcp, &iconv_converters, cc_link) {
|
|
name = ICONV_CONVERTER_NAME(dcp);
|
|
if (name == NULL)
|
|
continue;
|
|
error = SYSCTL_OUT(req, name, strlen(name) + 1);
|
|
if (error)
|
|
break;
|
|
}
|
|
sx_sunlock(&iconv_lock);
|
|
if (error)
|
|
return error;
|
|
spc = 0;
|
|
error = SYSCTL_OUT(req, &spc, sizeof(spc));
|
|
return error;
|
|
}
|
|
|
|
SYSCTL_PROC(_kern_iconv, OID_AUTO, drvlist, CTLFLAG_RD | CTLTYPE_OPAQUE,
|
|
NULL, 0, iconv_sysctl_drvlist, "S,xlat", "registered converters");
|
|
|
|
/*
|
|
* List all available charset pairs.
|
|
*/
|
|
static int
|
|
iconv_sysctl_cslist(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct iconv_cspair *csp;
|
|
struct iconv_cspair_info csi;
|
|
int error;
|
|
|
|
error = 0;
|
|
bzero(&csi, sizeof(csi));
|
|
csi.cs_version = ICONV_CSPAIR_INFO_VER;
|
|
sx_slock(&iconv_lock);
|
|
TAILQ_FOREACH(csp, &iconv_cslist, cp_link) {
|
|
csi.cs_id = csp->cp_id;
|
|
csi.cs_refcount = csp->cp_refcount;
|
|
csi.cs_base = csp->cp_base ? csp->cp_base->cp_id : 0;
|
|
strcpy(csi.cs_to, csp->cp_to);
|
|
strcpy(csi.cs_from, csp->cp_from);
|
|
error = SYSCTL_OUT(req, &csi, sizeof(csi));
|
|
if (error)
|
|
break;
|
|
}
|
|
sx_sunlock(&iconv_lock);
|
|
return error;
|
|
}
|
|
|
|
SYSCTL_PROC(_kern_iconv, OID_AUTO, cslist, CTLFLAG_RD | CTLTYPE_OPAQUE,
|
|
NULL, 0, iconv_sysctl_cslist, "S,xlat", "registered charset pairs");
|
|
|
|
int
|
|
iconv_add(const char *converter, const char *to, const char *from)
|
|
{
|
|
struct iconv_converter_class *dcp;
|
|
struct iconv_cspair *csp;
|
|
|
|
if (iconv_lookupconv(converter, &dcp) != 0)
|
|
return EINVAL;
|
|
|
|
return iconv_register_cspair(to, from, dcp, NULL, &csp);
|
|
}
|
|
|
|
/*
|
|
* Add new charset pair
|
|
*/
|
|
static int
|
|
iconv_sysctl_add(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct iconv_converter_class *dcp;
|
|
struct iconv_cspair *csp;
|
|
struct iconv_add_in din;
|
|
struct iconv_add_out dout;
|
|
int error;
|
|
|
|
error = SYSCTL_IN(req, &din, sizeof(din));
|
|
if (error)
|
|
return error;
|
|
if (din.ia_version != ICONV_ADD_VER)
|
|
return EINVAL;
|
|
if (din.ia_datalen > ICONV_CSMAXDATALEN)
|
|
return EINVAL;
|
|
if (strlen(din.ia_from) >= ICONV_CSNMAXLEN)
|
|
return EINVAL;
|
|
if (strlen(din.ia_to) >= ICONV_CSNMAXLEN)
|
|
return EINVAL;
|
|
if (strlen(din.ia_converter) >= ICONV_CNVNMAXLEN)
|
|
return EINVAL;
|
|
if (iconv_lookupconv(din.ia_converter, &dcp) != 0)
|
|
return EINVAL;
|
|
sx_xlock(&iconv_lock);
|
|
error = iconv_register_cspair(din.ia_to, din.ia_from, dcp, NULL, &csp);
|
|
if (error) {
|
|
sx_xunlock(&iconv_lock);
|
|
return error;
|
|
}
|
|
if (din.ia_datalen) {
|
|
csp->cp_data = malloc(din.ia_datalen, M_ICONVDATA, M_WAITOK);
|
|
error = copyin(din.ia_data, csp->cp_data, din.ia_datalen);
|
|
if (error)
|
|
goto bad;
|
|
}
|
|
dout.ia_csid = csp->cp_id;
|
|
error = SYSCTL_OUT(req, &dout, sizeof(dout));
|
|
if (error)
|
|
goto bad;
|
|
sx_xunlock(&iconv_lock);
|
|
ICDEBUG("%s => %s, %d bytes\n",din.ia_from, din.ia_to, din.ia_datalen);
|
|
return 0;
|
|
bad:
|
|
iconv_unregister_cspair(csp);
|
|
sx_xunlock(&iconv_lock);
|
|
return error;
|
|
}
|
|
|
|
SYSCTL_PROC(_kern_iconv, OID_AUTO, add, CTLFLAG_RW | CTLTYPE_OPAQUE,
|
|
NULL, 0, iconv_sysctl_add, "S,xlat", "register charset pair");
|
|
|
|
/*
|
|
* Default stubs for converters
|
|
*/
|
|
int
|
|
iconv_converter_initstub(struct iconv_converter_class *dp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
iconv_converter_donestub(struct iconv_converter_class *dp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
iconv_converter_tolowerstub(int c, void *handle)
|
|
{
|
|
return (c);
|
|
}
|
|
|
|
int
|
|
iconv_converter_handler(module_t mod, int type, void *data)
|
|
{
|
|
struct iconv_converter_class *dcp = data;
|
|
int error;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
sx_xlock(&iconv_lock);
|
|
error = iconv_register_converter(dcp);
|
|
if (error) {
|
|
sx_xunlock(&iconv_lock);
|
|
break;
|
|
}
|
|
error = ICONV_CONVERTER_INIT(dcp);
|
|
if (error)
|
|
iconv_unregister_converter(dcp);
|
|
sx_xunlock(&iconv_lock);
|
|
break;
|
|
case MOD_UNLOAD:
|
|
sx_xlock(&iconv_lock);
|
|
ICONV_CONVERTER_DONE(dcp);
|
|
error = iconv_unregister_converter(dcp);
|
|
sx_xunlock(&iconv_lock);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Common used functions (don't use with unicode)
|
|
*/
|
|
char *
|
|
iconv_convstr(void *handle, char *dst, const char *src)
|
|
{
|
|
char *p = dst;
|
|
size_t inlen, outlen;
|
|
int error;
|
|
|
|
if (handle == NULL) {
|
|
strcpy(dst, src);
|
|
return dst;
|
|
}
|
|
inlen = outlen = strlen(src);
|
|
error = iconv_conv(handle, NULL, NULL, &p, &outlen);
|
|
if (error)
|
|
return NULL;
|
|
error = iconv_conv(handle, &src, &inlen, &p, &outlen);
|
|
if (error)
|
|
return NULL;
|
|
*p = 0;
|
|
return dst;
|
|
}
|
|
|
|
void *
|
|
iconv_convmem(void *handle, void *dst, const void *src, int size)
|
|
{
|
|
const char *s = src;
|
|
char *d = dst;
|
|
size_t inlen, outlen;
|
|
int error;
|
|
|
|
if (size == 0)
|
|
return dst;
|
|
if (handle == NULL) {
|
|
memcpy(dst, src, size);
|
|
return dst;
|
|
}
|
|
inlen = outlen = size;
|
|
error = iconv_conv(handle, NULL, NULL, &d, &outlen);
|
|
if (error)
|
|
return NULL;
|
|
error = iconv_conv(handle, &s, &inlen, &d, &outlen);
|
|
if (error)
|
|
return NULL;
|
|
return dst;
|
|
}
|
|
|
|
int
|
|
iconv_lookupcp(char **cpp, const char *s)
|
|
{
|
|
if (cpp == NULL) {
|
|
ICDEBUG("warning a NULL list passed\n", "");
|
|
return ENOENT;
|
|
}
|
|
for (; *cpp; cpp++)
|
|
if (strcmp(*cpp, s) == 0)
|
|
return 0;
|
|
return ENOENT;
|
|
}
|
|
|
|
/*
|
|
* Return if fsname is in use of not
|
|
*/
|
|
int
|
|
iconv_vfs_refcount(const char *fsname)
|
|
{
|
|
struct vfsconf *vfsp;
|
|
|
|
vfsp = vfs_byname(fsname);
|
|
if (vfsp != NULL && vfsp->vfc_refcount > 0)
|
|
return (EBUSY);
|
|
return (0);
|
|
}
|