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/*
* LIBOIL - Library of Optimized Inner Loops
* Copyright (c) 2004 David A. Schleef <ds@schleef.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 ``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 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <liboil/liboil.h>
#include <liboil/liboiltest.h>
#include <liboil/liboilrandom.h>
#include "utf8.h"
/*
* Little explanation:
* 0x00-0x7f ASCII, one byte character
* 0x80-0xbf continuation byte, not a valid start byte
* 0xc0-0xdf 2-byte character
* 0xe0-0xef 3-byte character
* 0xf0-0xf7 4-byte character
* 0xf8-0xff reserved (illegal at the present time)
*/
static void
utf8_validate_test (OilTest *test)
{
int i;
int n = test->n;
uint8_t *ptr = oil_test_get_source_data (test, OIL_ARG_SRC1);
int x;
int extra_chars = 0;
for (i=0;i<n;i++){
if (i >= n-16) {
/* if it's close to the end, we'll randomly drop in a bad
* byte from either the 0x80-0xbf or 0xf8-0xff segments */
x = oil_rand_u8();
if (x < 16) {
x = oil_rand_u8();
if (extra_chars>0) {
/* this might not actually be a bad char */
ptr[i] = x;
extra_chars--;
} else {
if (x & 0x80) {
ptr[i] = 0x80 | (x&0x3f);
} else {
ptr[i] = 0xf8 | (x&0x07);
}
}
continue;
}
}
if (extra_chars > 0) {
ptr[i] = 0x80 | (oil_rand_u8() & 0x3f);
extra_chars--;
} else {
/* otherwise, we'll do a low probability of a multibyte char */
x = oil_rand_u8() & 0xf;
if (x == 0) {
ptr[i] = 0xc0 | (oil_rand_u8() & 0x1f);
extra_chars = 1;
} else if (x == 1) {
ptr[i] = 0xe0 | (oil_rand_u8() & 0x0f);
extra_chars = 2;
} else if (x == 2) {
ptr[i] = 0xf0 | (oil_rand_u8() & 0x07);
extra_chars = 3;
} else {
ptr[i] = oil_rand_u8() & 0x7f;
}
}
}
}
/**
* oil_utf8_validate:
* @d_1:
* @s:
* @n:
*
* Checks @s for valid UTF-8 characters. If the entire @s array
* represents valid UTF-8 characters, @n is written to @d_1.
* Otherwise, the index in the array of the beginning of the first
* invalid UTF-8 character is written to @d_1.
*/
OIL_DEFINE_CLASS_FULL (utf8_validate, "int32_t *d_1, uint8_t *s, int n",
utf8_validate_test);
static void
utf8_validate_ref (int32_t *d_1, uint8_t *s, int n)
{
int i;
int extra_bytes;
int mask;
for(i=0;i<n;i++){
extra_bytes = 0;
if (s[i] < 128) continue;
if ((s[i] & 0xe0) == 0xc0) {
extra_bytes = 1;
mask = 0x7f;
} else if ((s[i] & 0xf0) == 0xe0) {
extra_bytes = 2;
mask = 0x1f;
} else if ((s[i] & 0xf8) == 0xf0) {
extra_bytes = 3;
mask = 0x0f;
} else {
goto error;
}
if (i + extra_bytes >= n) goto error;
while(extra_bytes--) {
i++;
if ((s[i] & 0xc0) != 0x80) goto error;
}
}
error:
d_1[0] = i;
}
OIL_DEFINE_IMPL_REF (utf8_validate_ref, utf8_validate);
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