/* Conversion module for UTF-32.
- Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include <byteswap.h>
#include <dlfcn.h>
#define DEFINE_FINI 0
#define MIN_NEEDED_FROM 4
#define MIN_NEEDED_TO 4
+#define ONE_DIRECTION 0
#define FROM_DIRECTION (dir == from_utf32)
#define PREPARE_LOOP \
enum direction dir = ((struct utf32_data *) step->__data)->dir; \
int swap; \
if (FROM_DIRECTION && var == UTF_32) \
{ \
- if (data->__invocation_counter == 0) \
+ if (__glibc_unlikely (data->__invocation_counter == 0)) \
{ \
/* We have to find out which byte order the file is encoded in. */ \
if (inptr + 4 > inend) \
- return __GCONV_EMPTY_INPUT; \
+ return (inptr == inend \
+ ? __GCONV_EMPTY_INPUT : __GCONV_INCOMPLETE_INPUT); \
\
if (get32u (inptr) == BOM) \
/* Simply ignore the BOM character. */ \
*inptrp = inptr += 4; \
else if (get32u (inptr) == BOM_OE) \
{ \
- ((struct utf32_data *) step->__data)->swap = 1; \
+ data->__flags |= __GCONV_SWAP; \
*inptrp = inptr += 4; \
} \
} \
&& data->__invocation_counter == 0) \
{ \
/* Emit the Byte Order Mark. */ \
- if (__builtin_expect (outbuf + 4 > outend, 0)) \
+ if (__glibc_unlikely (outbuf + 4 > outend)) \
return __GCONV_FULL_OUTPUT; \
\
put32u (outbuf, BOM); \
outbuf += 4; \
} \
- swap = ((struct utf32_data *) step->__data)->swap;
+ else if (__builtin_expect (data->__invocation_counter == 0, 0) \
+ && ((var == UTF_32LE && BYTE_ORDER == BIG_ENDIAN) \
+ || (var == UTF_32BE && BYTE_ORDER == LITTLE_ENDIAN))) \
+ data->__flags |= __GCONV_SWAP; \
+ swap = data->__flags & __GCONV_SWAP;
#define EXTRA_LOOP_ARGS , var, swap
{
enum direction dir;
enum variant var;
- int swap;
};
{
new_data->dir = dir;
new_data->var = var;
- new_data->swap = ((var == UTF_32LE && BYTE_ORDER == BIG_ENDIAN)
- || (var == UTF_32BE
- && BYTE_ORDER == LITTLE_ENDIAN));
step->__data = new_data;
if (dir == from_utf32)
{ \
uint32_t c = get32 (inptr); \
\
- if (__builtin_expect (c >= 0x110000, 0)) \
+ if (__glibc_unlikely (c >= 0x110000)) \
{ \
- STANDARD_ERR_HANDLER (4); \
+ STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
- else if (__builtin_expect (c >= 0xd800 && c < 0xe000, 0)) \
+ else if (__glibc_unlikely (c >= 0xd800 && c < 0xe000)) \
{ \
/* Surrogate characters in UCS-4 input are not valid. \
We must catch this. If we let surrogates pass through, \
attackers could make a security hole exploit by \
generating "irregular UTF-32" sequences. */ \
+ result = __GCONV_ILLEGAL_INPUT; \
if (! ignore_errors_p ()) \
- { \
- result = __GCONV_ILLEGAL_INPUT; \
- break; \
- } \
+ break; \
inptr += 4; \
++*irreversible; \
continue; \
} \
\
if (swap) \
- put32 (outptr, bswap_32 (c)); \
- else \
- put32 (outptr, c); \
+ c = bswap_32 (c); \
+ put32 (outptr, c); \
\
outptr += 4; \
inptr += 4; \
if (swap) \
u1 = bswap_32 (u1); \
\
- if (__builtin_expect (u1 >= 0x110000, 0)) \
+ if (__glibc_unlikely (u1 >= 0x110000 || (u1 >= 0xd800 && u1 < 0xe000))) \
{ \
/* This is illegal. */ \
- if (! ignore_errors_p ()) \
- { \
- /* This is an illegal character. */ \
- result = __GCONV_ILLEGAL_INPUT; \
- break; \
- } \
- \
- inptr += 4; \
- ++*irreversible; \
- continue; \
+ STANDARD_FROM_LOOP_ERR_HANDLER (4); \
} \
\
put32 (outptr, u1); \
projects / thirdparty / glibc.git / blobdiff