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/*-
* Copyright (c) 2006 Hajimu UMEMOTO <ume@FreeBSD.org>
* 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.
*
* $FreeBSD$
*/
#include <dlfcn.h>
#include <stddef.h>
#include "iconv.h"
#undef iconv_open
#undef iconv
#undef iconv_close
#define ICONVLIB "libiconv.so"
#define ICONV_ENGINE "iconv"
#define ICONV_OPEN "iconv_open"
#define ICONV_CLOSE "iconv_close"
typedef iconv_t iconv_open_t(const char *, const char *);
dl_iconv_t *dl_iconv;
dl_iconv_close_t *dl_iconv_close;
static int initialized;
static void *iconvlib;
static iconv_open_t *iconv_open;
iconv_t
dl_iconv_open(const char *tocode, const char *fromcode)
{
if (initialized) {
if (iconvlib == NULL)
return (iconv_t)-1;
} else {
initialized = 1;
iconvlib = dlopen(ICONVLIB, RTLD_LAZY | RTLD_GLOBAL);
if (iconvlib == NULL)
return (iconv_t)-1;
iconv_open = (iconv_open_t *)dlfunc(iconvlib, ICONV_OPEN);
if (iconv_open == NULL)
goto dlfunc_err;
dl_iconv = (dl_iconv_t *)dlfunc(iconvlib, ICONV_ENGINE);
if (dl_iconv == NULL)
goto dlfunc_err;
dl_iconv_close = (dl_iconv_close_t *)dlfunc(iconvlib,
ICONV_CLOSE);
if (dl_iconv_close == NULL)
goto dlfunc_err;
}
return iconv_open(tocode, fromcode);
dlfunc_err:
dlclose(iconvlib);
iconvlib = NULL;
return (iconv_t)-1;
}
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