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/*
SSSD
Authors:
Stephen Gallagher <sgallagh@redhat.com>
Copyright (C) 2011 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#ifdef HAVE_LIBUNISTRING
#include <unistr.h>
#include <unicase.h>
#elif defined(HAVE_GLIB2)
#include <glib.h>
#endif
#include "sss_utf8.h"
#ifdef HAVE_LIBUNISTRING
void sss_utf8_free(void *ptr)
{
return free(ptr);
}
#elif defined(HAVE_GLIB2)
void sss_utf8_free(void *ptr)
{
return g_free(ptr);
}
#else
#error No unicode library
#endif
#ifdef HAVE_LIBUNISTRING
uint8_t *sss_utf8_tolower(const uint8_t *s, size_t len, size_t *_nlen)
{
size_t llen;
uint8_t *lower;
lower = u8_tolower(s, len, NULL, NULL, NULL, &llen);
if (!lower) return NULL;
if (_nlen) *_nlen = llen;
return lower;
}
#elif defined(HAVE_GLIB2)
uint8_t *sss_utf8_tolower(const uint8_t *s, size_t len, size_t *_nlen)
{
gchar *glower;
size_t nlen;
uint8_t *lower;
glower = g_utf8_strdown((const gchar *) s, len);
if (!glower) return NULL;
/* strlen() is safe here because g_utf8_strdown() always null-terminates */
nlen = strlen(glower);
lower = g_malloc(nlen);
if (!lower) {
g_free(glower);
return NULL;
}
memcpy(lower, glower, nlen);
g_free(glower);
if (_nlen) *_nlen = nlen;
return (uint8_t *) lower;
}
#else
#error No unicode library
#endif
#ifdef HAVE_LIBUNISTRING
bool sss_utf8_check(const uint8_t *s, size_t n)
{
if (u8_check(s, n) == NULL) {
return true;
}
return false;
}
#elif defined(HAVE_GLIB2)
bool sss_utf8_check(const uint8_t *s, size_t n)
{
return g_utf8_validate((const gchar *)s, n, NULL);
}
#else
#error No unicode library
#endif
/* Returns EOK on match, ENOTUNIQ if comparison succeeds but
* does not match.
* May return other errno error codes on failure
*/
#ifdef HAVE_LIBUNISTRING
errno_t sss_utf8_case_eq(const uint8_t *s1, const uint8_t *s2)
{
/* Do a case-insensitive comparison.
* The input must be encoded in UTF8.
* We have no way of knowing the language,
* so we'll pass NULL for the language and
* hope for the best.
*/
int ret;
int resultp;
size_t n1, n2;
errno = 0;
n1 = u8_strlen(s1);
n2 = u8_strlen(s2);
ret = u8_casecmp(s1, n1,
s2, n2,
NULL, NULL,
&resultp);
if (ret < 0) {
/* An error occurred */
return errno;
}
if (resultp == 0) {
return EOK;
}
return ENOMATCH;
}
#elif defined(HAVE_GLIB2)
errno_t sss_utf8_case_eq(const uint8_t *s1, const uint8_t *s2)
{
gchar *gs1;
gchar *gs2;
gssize n1, n2;
gint gret;
errno_t ret;
n1 = g_utf8_strlen((const gchar *)s1, -1);
n2 = g_utf8_strlen((const gchar *)s2, -1);
gs1 = g_utf8_casefold((const gchar *)s1, n1);
if (gs1 == NULL) {
return ENOMEM;
}
gs2 = g_utf8_casefold((const gchar *)s2, n2);
if (gs2 == NULL) {
return ENOMEM;
}
gret = g_utf8_collate(gs1, gs2);
if (gret == 0) {
ret = EOK;
} else {
ret = ENOMATCH;
}
g_free(gs1);
g_free(gs2);
return ret;
}
#else
#error No unicode library
#endif
bool sss_string_equal(bool cs, const char *s1, const char *s2)
{
if (cs) {
return strcmp(s1, s2) == 0;
}
return sss_utf8_case_eq((const uint8_t *)s1, (const uint8_t *)s2) == EOK;
}
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