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1319 lines
38 KiB
C
1319 lines
38 KiB
C
/* Simple transformations functions.
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Copyright (C) 1997-2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <byteswap.h>
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#include <dlfcn.h>
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#include <endian.h>
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#include <errno.h>
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#include <gconv.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <sys/param.h>
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#include <gconv_int.h>
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#define BUILTIN_ALIAS(s1, s2) /* nothing */
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#define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, BtowcFct, \
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MinF, MaxF, MinT, MaxT) \
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extern int Fct (struct __gconv_step *, struct __gconv_step_data *, \
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__const unsigned char **, __const unsigned char *, \
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unsigned char **, size_t *, int, int);
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#include "gconv_builtin.h"
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#ifndef EILSEQ
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# define EILSEQ EINVAL
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#endif
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/* Specialized conversion function for a single byte to INTERNAL, recognizing
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only ASCII characters. */
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wint_t
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__gconv_btwoc_ascii (struct __gconv_step *step, unsigned char c)
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{
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if (c < 0x80)
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return c;
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else
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return WEOF;
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}
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/* Transform from the internal, UCS4-like format, to UCS4. The
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difference between the internal ucs4 format and the real UCS4
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format is, if any, the endianess. The Unicode/ISO 10646 says that
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unless some higher protocol specifies it differently, the byte
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order is big endian.*/
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP internal_ucs4_loop
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#define TO_LOOP internal_ucs4_loop /* This is not used. */
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#define FUNCTION_NAME __gconv_transform_internal_ucs4
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static inline int
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__attribute ((always_inline))
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internal_ucs4_loop (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp, const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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/* Sigh, we have to do some real work. */
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size_t cnt;
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uint32_t *outptr32 = (uint32_t *) outptr;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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*outptr32++ = bswap_32 (*(const uint32_t *) inptr);
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*inptrp = inptr;
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*outptrp = (unsigned char *) outptr32;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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/* Simply copy the data. */
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*inptrp = inptr + n_convert * 4;
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*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
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#else
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# error "This endianess is not supported."
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#endif
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/* Determine the status. */
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if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else if (*outptrp + 4 > outend)
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result = __GCONV_FULL_OUTPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#ifndef _STRING_ARCH_unaligned
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static inline int
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__attribute ((always_inline))
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internal_ucs4_loop_unaligned (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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/* Sigh, we have to do some real work. */
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4, outptr += 4)
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{
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outptr[0] = inptr[3];
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outptr[1] = inptr[2];
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outptr[2] = inptr[1];
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outptr[3] = inptr[0];
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}
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*inptrp = inptr;
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*outptrp = outptr;
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# elif __BYTE_ORDER == __BIG_ENDIAN
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/* Simply copy the data. */
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*inptrp = inptr + n_convert * 4;
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*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
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# else
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# error "This endianess is not supported."
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# endif
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/* Determine the status. */
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if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else if (*outptrp + 4 > outend)
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result = __GCONV_FULL_OUTPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#endif
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static inline int
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__attribute ((always_inline))
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internal_ucs4_loop_single (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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mbstate_t *state = step_data->__statep;
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size_t cnt = state->__count & 7;
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while (*inptrp < inend && cnt < 4)
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state->__value.__wchb[cnt++] = *(*inptrp)++;
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if (__builtin_expect (cnt < 4, 0))
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{
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/* Still not enough bytes. Store the ones in the input buffer. */
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state->__count &= ~7;
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state->__count |= cnt;
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return __GCONV_INCOMPLETE_INPUT;
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}
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[3];
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(*outptrp)[1] = state->__value.__wchb[2];
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(*outptrp)[2] = state->__value.__wchb[1];
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(*outptrp)[3] = state->__value.__wchb[0];
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#elif __BYTE_ORDER == __BIG_ENDIAN
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/* XXX unaligned */
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(*outptrp)[0] = state->__value.__wchb[0];
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(*outptrp)[1] = state->__value.__wchb[1];
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(*outptrp)[2] = state->__value.__wchb[2];
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(*outptrp)[3] = state->__value.__wchb[3];
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#else
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# error "This endianess is not supported."
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#endif
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*outptrp += 4;
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/* Clear the state buffer. */
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state->__count &= ~7;
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return __GCONV_OK;
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}
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#include <iconv/skeleton.c>
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/* Transform from UCS4 to the internal, UCS4-like format. Unlike
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for the other direction we have to check for correct values here. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define FROM_DIRECTION 1
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#define FROM_LOOP ucs4_internal_loop
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#define TO_LOOP ucs4_internal_loop /* This is not used. */
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#define FUNCTION_NAME __gconv_transform_ucs4_internal
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static inline int
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__attribute ((always_inline))
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ucs4_internal_loop (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp, const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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int flags = step_data->__flags;
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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{
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uint32_t inval;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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inval = bswap_32 (*(const uint32_t *) inptr);
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#else
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inval = *(const uint32_t *) inptr;
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#endif
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if (__builtin_expect (inval > 0x7fffffff, 0))
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{
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/* The value is too large. We don't try transliteration here since
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this is not an error because of the lack of possibilities to
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represent the result. This is a genuine bug in the input since
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UCS4 does not allow such values. */
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if (irreversible == NULL)
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/* We are transliterating, don't try to correct anything. */
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return __GCONV_ILLEGAL_INPUT;
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if (flags & __GCONV_IGNORE_ERRORS)
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{
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/* Just ignore this character. */
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++*irreversible;
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continue;
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}
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*inptrp = inptr;
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*outptrp = outptr;
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return __GCONV_ILLEGAL_INPUT;
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}
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*((uint32_t *) outptr) = inval;
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outptr += sizeof (uint32_t);
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}
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*inptrp = inptr;
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*outptrp = outptr;
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/* Determine the status. */
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if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else if (*outptrp + 4 > outend)
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result = __GCONV_FULL_OUTPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#ifndef _STRING_ARCH_unaligned
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static inline int
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__attribute ((always_inline))
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ucs4_internal_loop_unaligned (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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int flags = step_data->__flags;
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const unsigned char *inptr = *inptrp;
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unsigned char *outptr = *outptrp;
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size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
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int result;
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size_t cnt;
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for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
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{
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if (__builtin_expect (inptr[0] > 0x80, 0))
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{
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/* The value is too large. We don't try transliteration here since
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this is not an error because of the lack of possibilities to
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represent the result. This is a genuine bug in the input since
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UCS4 does not allow such values. */
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if (irreversible == NULL)
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/* We are transliterating, don't try to correct anything. */
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return __GCONV_ILLEGAL_INPUT;
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if (flags & __GCONV_IGNORE_ERRORS)
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{
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/* Just ignore this character. */
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++*irreversible;
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continue;
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}
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*inptrp = inptr;
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*outptrp = outptr;
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return __GCONV_ILLEGAL_INPUT;
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}
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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outptr[3] = inptr[0];
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outptr[2] = inptr[1];
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outptr[1] = inptr[2];
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outptr[0] = inptr[3];
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# else
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outptr[0] = inptr[0];
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outptr[1] = inptr[1];
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outptr[2] = inptr[2];
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outptr[3] = inptr[3];
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# endif
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outptr += 4;
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}
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*inptrp = inptr;
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*outptrp = outptr;
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/* Determine the status. */
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if (*inptrp == inend)
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result = __GCONV_EMPTY_INPUT;
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else if (*outptrp + 4 > outend)
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result = __GCONV_FULL_OUTPUT;
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else
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result = __GCONV_INCOMPLETE_INPUT;
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return result;
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}
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#endif
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static inline int
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__attribute ((always_inline))
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ucs4_internal_loop_single (struct __gconv_step *step,
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struct __gconv_step_data *step_data,
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const unsigned char **inptrp,
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const unsigned char *inend,
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unsigned char **outptrp, unsigned char *outend,
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size_t *irreversible)
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{
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mbstate_t *state = step_data->__statep;
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int flags = step_data->__flags;
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size_t cnt = state->__count & 7;
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while (*inptrp < inend && cnt < 4)
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state->__value.__wchb[cnt++] = *(*inptrp)++;
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if (__builtin_expect (cnt < 4, 0))
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{
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/* Still not enough bytes. Store the ones in the input buffer. */
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state->__count &= ~7;
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state->__count |= cnt;
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return __GCONV_INCOMPLETE_INPUT;
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}
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if (__builtin_expect (((unsigned char *) state->__value.__wchb)[0] > 0x80,
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0))
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{
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/* The value is too large. We don't try transliteration here since
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this is not an error because of the lack of possibilities to
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represent the result. This is a genuine bug in the input since
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UCS4 does not allow such values. */
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if (!(flags & __GCONV_IGNORE_ERRORS))
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{
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*inptrp -= cnt - (state->__count & 7);
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return __GCONV_ILLEGAL_INPUT;
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}
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}
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else
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{
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[3];
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(*outptrp)[1] = state->__value.__wchb[2];
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(*outptrp)[2] = state->__value.__wchb[1];
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(*outptrp)[3] = state->__value.__wchb[0];
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#elif __BYTE_ORDER == __BIG_ENDIAN
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(*outptrp)[0] = state->__value.__wchb[0];
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(*outptrp)[1] = state->__value.__wchb[1];
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(*outptrp)[2] = state->__value.__wchb[2];
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(*outptrp)[3] = state->__value.__wchb[3];
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#endif
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*outptrp += 4;
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}
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/* Clear the state buffer. */
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state->__count &= ~7;
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return __GCONV_OK;
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}
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#include <iconv/skeleton.c>
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|
|
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/* Similarly for the little endian form. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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#define MIN_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
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#define FROM_LOOP internal_ucs4le_loop
|
|
#define TO_LOOP internal_ucs4le_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_ucs4le
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|
|
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static inline int
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__attribute ((always_inline))
|
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internal_ucs4le_loop (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp, const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
/* Sigh, we have to do some real work. */
|
|
size_t cnt;
|
|
uint32_t *outptr32 = (uint32_t *) outptr;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
|
|
*outptr32++ = bswap_32 (*(const uint32_t *) inptr);
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|
outptr = (unsigned char *) outptr32;
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
#elif __BYTE_ORDER == __LITTLE_ENDIAN
|
|
/* Simply copy the data. */
|
|
*inptrp = inptr + n_convert * 4;
|
|
*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
|
|
#else
|
|
# error "This endianess is not supported."
|
|
#endif
|
|
|
|
/* Determine the status. */
|
|
if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else if (*outptrp + 4 > outend)
|
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result = __GCONV_FULL_OUTPUT;
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|
else
|
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result = __GCONV_INCOMPLETE_INPUT;
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|
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return result;
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|
}
|
|
|
|
#ifndef _STRING_ARCH_unaligned
|
|
static inline int
|
|
__attribute ((always_inline))
|
|
internal_ucs4le_loop_unaligned (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
/* Sigh, we have to do some real work. */
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4, outptr += 4)
|
|
{
|
|
outptr[0] = inptr[3];
|
|
outptr[1] = inptr[2];
|
|
outptr[2] = inptr[1];
|
|
outptr[3] = inptr[0];
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
# elif __BYTE_ORDER == __LITTLE_ENDIAN
|
|
/* Simply copy the data. */
|
|
*inptrp = inptr + n_convert * 4;
|
|
*outptrp = __mempcpy (outptr, inptr, n_convert * 4);
|
|
# else
|
|
# error "This endianess is not supported."
|
|
# endif
|
|
|
|
/* Determine the status. */
|
|
if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else if (*inptrp + 4 > inend)
|
|
result = __GCONV_INCOMPLETE_INPUT;
|
|
else
|
|
{
|
|
assert (*outptrp + 4 > outend);
|
|
result = __GCONV_FULL_OUTPUT;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
|
|
static inline int
|
|
__attribute ((always_inline))
|
|
internal_ucs4le_loop_single (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
mbstate_t *state = step_data->__statep;
|
|
size_t cnt = state->__count & 7;
|
|
|
|
while (*inptrp < inend && cnt < 4)
|
|
state->__value.__wchb[cnt++] = *(*inptrp)++;
|
|
|
|
if (__builtin_expect (cnt < 4, 0))
|
|
{
|
|
/* Still not enough bytes. Store the ones in the input buffer. */
|
|
state->__count &= ~7;
|
|
state->__count |= cnt;
|
|
|
|
return __GCONV_INCOMPLETE_INPUT;
|
|
}
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
(*outptrp)[0] = state->__value.__wchb[3];
|
|
(*outptrp)[1] = state->__value.__wchb[2];
|
|
(*outptrp)[2] = state->__value.__wchb[1];
|
|
(*outptrp)[3] = state->__value.__wchb[0];
|
|
|
|
#else
|
|
/* XXX unaligned */
|
|
(*outptrp)[0] = state->__value.__wchb[0];
|
|
(*outptrp)[1] = state->__value.__wchb[1];
|
|
(*outptrp)[2] = state->__value.__wchb[2];
|
|
(*outptrp)[3] = state->__value.__wchb[3];
|
|
|
|
#endif
|
|
|
|
*outptrp += 4;
|
|
|
|
/* Clear the state buffer. */
|
|
state->__count &= ~7;
|
|
|
|
return __GCONV_OK;
|
|
}
|
|
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* And finally from UCS4-LE to the internal encoding. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ucs4le_internal_loop
|
|
#define TO_LOOP ucs4le_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ucs4le_internal
|
|
|
|
|
|
static inline int
|
|
__attribute ((always_inline))
|
|
ucs4le_internal_loop (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp, const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
int flags = step_data->__flags;
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
|
|
{
|
|
uint32_t inval;
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
inval = bswap_32 (*(const uint32_t *) inptr);
|
|
#else
|
|
inval = *(const uint32_t *) inptr;
|
|
#endif
|
|
|
|
if (__builtin_expect (inval > 0x7fffffff, 0))
|
|
{
|
|
/* The value is too large. We don't try transliteration here since
|
|
this is not an error because of the lack of possibilities to
|
|
represent the result. This is a genuine bug in the input since
|
|
UCS4 does not allow such values. */
|
|
if (irreversible == NULL)
|
|
/* We are transliterating, don't try to correct anything. */
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
|
|
if (flags & __GCONV_IGNORE_ERRORS)
|
|
{
|
|
/* Just ignore this character. */
|
|
++*irreversible;
|
|
continue;
|
|
}
|
|
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
}
|
|
|
|
*((uint32_t *) outptr) = inval;
|
|
outptr += sizeof (uint32_t);
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
|
|
/* Determine the status. */
|
|
if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else if (*inptrp + 4 > inend)
|
|
result = __GCONV_INCOMPLETE_INPUT;
|
|
else
|
|
{
|
|
assert (*outptrp + 4 > outend);
|
|
result = __GCONV_FULL_OUTPUT;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#ifndef _STRING_ARCH_unaligned
|
|
static inline int
|
|
__attribute ((always_inline))
|
|
ucs4le_internal_loop_unaligned (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
int flags = step_data->__flags;
|
|
const unsigned char *inptr = *inptrp;
|
|
unsigned char *outptr = *outptrp;
|
|
size_t n_convert = MIN (inend - inptr, outend - outptr) / 4;
|
|
int result;
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; cnt < n_convert; ++cnt, inptr += 4)
|
|
{
|
|
if (__builtin_expect (inptr[3] > 0x80, 0))
|
|
{
|
|
/* The value is too large. We don't try transliteration here since
|
|
this is not an error because of the lack of possibilities to
|
|
represent the result. This is a genuine bug in the input since
|
|
UCS4 does not allow such values. */
|
|
if (irreversible == NULL)
|
|
/* We are transliterating, don't try to correct anything. */
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
|
|
if (flags & __GCONV_IGNORE_ERRORS)
|
|
{
|
|
/* Just ignore this character. */
|
|
++*irreversible;
|
|
continue;
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
}
|
|
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
outptr[3] = inptr[0];
|
|
outptr[2] = inptr[1];
|
|
outptr[1] = inptr[2];
|
|
outptr[0] = inptr[3];
|
|
# else
|
|
outptr[0] = inptr[0];
|
|
outptr[1] = inptr[1];
|
|
outptr[2] = inptr[2];
|
|
outptr[3] = inptr[3];
|
|
# endif
|
|
|
|
outptr += 4;
|
|
}
|
|
|
|
*inptrp = inptr;
|
|
*outptrp = outptr;
|
|
|
|
/* Determine the status. */
|
|
if (*inptrp == inend)
|
|
result = __GCONV_EMPTY_INPUT;
|
|
else if (*inptrp + 4 > inend)
|
|
result = __GCONV_INCOMPLETE_INPUT;
|
|
else
|
|
{
|
|
assert (*outptrp + 4 > outend);
|
|
result = __GCONV_FULL_OUTPUT;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
|
|
static inline int
|
|
__attribute ((always_inline))
|
|
ucs4le_internal_loop_single (struct __gconv_step *step,
|
|
struct __gconv_step_data *step_data,
|
|
const unsigned char **inptrp,
|
|
const unsigned char *inend,
|
|
unsigned char **outptrp, unsigned char *outend,
|
|
size_t *irreversible)
|
|
{
|
|
mbstate_t *state = step_data->__statep;
|
|
int flags = step_data->__flags;
|
|
size_t cnt = state->__count & 7;
|
|
|
|
while (*inptrp < inend && cnt < 4)
|
|
state->__value.__wchb[cnt++] = *(*inptrp)++;
|
|
|
|
if (__builtin_expect (cnt < 4, 0))
|
|
{
|
|
/* Still not enough bytes. Store the ones in the input buffer. */
|
|
state->__count &= ~7;
|
|
state->__count |= cnt;
|
|
|
|
return __GCONV_INCOMPLETE_INPUT;
|
|
}
|
|
|
|
if (__builtin_expect (((unsigned char *) state->__value.__wchb)[3] > 0x80,
|
|
0))
|
|
{
|
|
/* The value is too large. We don't try transliteration here since
|
|
this is not an error because of the lack of possibilities to
|
|
represent the result. This is a genuine bug in the input since
|
|
UCS4 does not allow such values. */
|
|
if (!(flags & __GCONV_IGNORE_ERRORS))
|
|
return __GCONV_ILLEGAL_INPUT;
|
|
}
|
|
else
|
|
{
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
(*outptrp)[0] = state->__value.__wchb[3];
|
|
(*outptrp)[1] = state->__value.__wchb[2];
|
|
(*outptrp)[2] = state->__value.__wchb[1];
|
|
(*outptrp)[3] = state->__value.__wchb[0];
|
|
#else
|
|
(*outptrp)[0] = state->__value.__wchb[0];
|
|
(*outptrp)[1] = state->__value.__wchb[1];
|
|
(*outptrp)[2] = state->__value.__wchb[2];
|
|
(*outptrp)[3] = state->__value.__wchb[3];
|
|
#endif
|
|
|
|
*outptrp += 4;
|
|
}
|
|
|
|
/* Clear the state buffer. */
|
|
state->__count &= ~7;
|
|
|
|
return __GCONV_OK;
|
|
}
|
|
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from ISO 646-IRV to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ascii_internal_loop
|
|
#define TO_LOOP ascii_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ascii_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
if (__builtin_expect (*inptr > '\x7f', 0)) \
|
|
{ \
|
|
/* The value is too large. We don't try transliteration here since \
|
|
this is not an error because of the lack of possibilities to \
|
|
represent the result. This is a genuine bug in the input since \
|
|
ASCII does not allow such values. */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
else \
|
|
/* It's an one byte sequence. */ \
|
|
*((uint32_t *) outptr) = *inptr++; \
|
|
outptr += sizeof (uint32_t); \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to ISO 646-IRV. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 1
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_ascii_loop
|
|
#define TO_LOOP internal_ascii_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_ascii
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
if (__builtin_expect (*((const uint32_t *) inptr) > 0x7f, 0)) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (*((const uint32_t *) inptr), 4); \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
else \
|
|
/* It's an one byte sequence. */ \
|
|
*outptr++ = *((const uint32_t *) inptr); \
|
|
inptr += sizeof (uint32_t); \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to UTF-8. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 1
|
|
#define MAX_NEEDED_TO 6
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_utf8_loop
|
|
#define TO_LOOP internal_utf8_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_utf8
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define MAX_NEEDED_OUTPUT MAX_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t wc = *((const uint32_t *) inptr); \
|
|
\
|
|
if (wc < 0x80) \
|
|
/* It's an one byte sequence. */ \
|
|
*outptr++ = (unsigned char) wc; \
|
|
else if (__builtin_expect (wc <= 0x7fffffff, 1)) \
|
|
{ \
|
|
size_t step; \
|
|
char *start; \
|
|
\
|
|
for (step = 2; step < 6; ++step) \
|
|
if ((wc & (~(uint32_t)0 << (5 * step + 1))) == 0) \
|
|
break; \
|
|
\
|
|
if (__builtin_expect (outptr + step > outend, 0)) \
|
|
{ \
|
|
/* Too long. */ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
start = outptr; \
|
|
*outptr = (unsigned char) (~0xff >> step); \
|
|
outptr += step; \
|
|
do \
|
|
{ \
|
|
start[--step] = 0x80 | (wc & 0x3f); \
|
|
wc >>= 6; \
|
|
} \
|
|
while (step > 1); \
|
|
start[0] |= wc; \
|
|
} \
|
|
else \
|
|
{ \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
\
|
|
inptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UTF-8 to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MAX_NEEDED_FROM 6
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP utf8_internal_loop
|
|
#define TO_LOOP utf8_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_utf8_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t ch; \
|
|
uint_fast32_t cnt; \
|
|
uint_fast32_t i; \
|
|
\
|
|
/* Next input byte. */ \
|
|
ch = *inptr; \
|
|
\
|
|
if (ch < 0x80) \
|
|
{ \
|
|
/* One byte sequence. */ \
|
|
cnt = 1; \
|
|
++inptr; \
|
|
} \
|
|
else \
|
|
{ \
|
|
if (ch >= 0xc2 && ch < 0xe0) \
|
|
{ \
|
|
/* We expect two bytes. The first byte cannot be 0xc0 or 0xc1, \
|
|
otherwise the wide character could have been represented \
|
|
using a single byte. */ \
|
|
cnt = 2; \
|
|
ch &= 0x1f; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1)) \
|
|
{ \
|
|
/* We expect three bytes. */ \
|
|
cnt = 3; \
|
|
ch &= 0x0f; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xf8) == 0xf0, 1)) \
|
|
{ \
|
|
/* We expect four bytes. */ \
|
|
cnt = 4; \
|
|
ch &= 0x07; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xfc) == 0xf8, 1)) \
|
|
{ \
|
|
/* We expect five bytes. */ \
|
|
cnt = 5; \
|
|
ch &= 0x03; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xfe) == 0xfc, 1)) \
|
|
{ \
|
|
/* We expect six bytes. */ \
|
|
cnt = 6; \
|
|
ch &= 0x01; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* Search the end of this ill-formed UTF-8 character. This \
|
|
is the next byte with (x & 0xc0) != 0x80. */ \
|
|
i = 0; \
|
|
do \
|
|
++i; \
|
|
while (inptr + i < inend \
|
|
&& (*(inptr + i) & 0xc0) == 0x80 \
|
|
&& i < 5); \
|
|
\
|
|
errout: \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (i); \
|
|
} \
|
|
\
|
|
if (__builtin_expect (inptr + cnt > inend, 0)) \
|
|
{ \
|
|
/* We don't have enough input. But before we report that check \
|
|
that all the bytes are correct. */ \
|
|
for (i = 1; inptr + i < inend; ++i) \
|
|
if ((inptr[i] & 0xc0) != 0x80) \
|
|
break; \
|
|
\
|
|
if (__builtin_expect (inptr + i == inend, 1)) \
|
|
{ \
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
goto errout; \
|
|
} \
|
|
\
|
|
/* Read the possible remaining bytes. */ \
|
|
for (i = 1; i < cnt; ++i) \
|
|
{ \
|
|
uint32_t byte = inptr[i]; \
|
|
\
|
|
if ((byte & 0xc0) != 0x80) \
|
|
/* This is an illegal encoding. */ \
|
|
break; \
|
|
\
|
|
ch <<= 6; \
|
|
ch |= byte & 0x3f; \
|
|
} \
|
|
\
|
|
/* If i < cnt, some trail byte was not >= 0x80, < 0xc0. \
|
|
If cnt > 2 and ch < 2^(5*cnt-4), the wide character ch could \
|
|
have been represented with fewer than cnt bytes. */ \
|
|
if (i < cnt || (cnt > 2 && (ch >> (5 * cnt - 4)) == 0)) \
|
|
{ \
|
|
/* This is an illegal encoding. */ \
|
|
goto errout; \
|
|
} \
|
|
\
|
|
inptr += cnt; \
|
|
} \
|
|
\
|
|
/* Now adjust the pointers and store the result. */ \
|
|
*((uint32_t *) outptr) = ch; \
|
|
outptr += sizeof (uint32_t); \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
|
|
#define STORE_REST \
|
|
{ \
|
|
/* We store the remaining bytes while converting them into the UCS4 \
|
|
format. We can assume that the first byte in the buffer is \
|
|
correct and that it requires a larger number of bytes than there \
|
|
are in the input buffer. */ \
|
|
wint_t ch = **inptrp; \
|
|
size_t cnt, r; \
|
|
\
|
|
state->__count = inend - *inptrp; \
|
|
\
|
|
if (ch >= 0xc2 && ch < 0xe0) \
|
|
{ \
|
|
/* We expect two bytes. The first byte cannot be 0xc0 or \
|
|
0xc1, otherwise the wide character could have been \
|
|
represented using a single byte. */ \
|
|
cnt = 2; \
|
|
ch &= 0x1f; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1)) \
|
|
{ \
|
|
/* We expect three bytes. */ \
|
|
cnt = 3; \
|
|
ch &= 0x0f; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xf8) == 0xf0, 1)) \
|
|
{ \
|
|
/* We expect four bytes. */ \
|
|
cnt = 4; \
|
|
ch &= 0x07; \
|
|
} \
|
|
else if (__builtin_expect ((ch & 0xfc) == 0xf8, 1)) \
|
|
{ \
|
|
/* We expect five bytes. */ \
|
|
cnt = 5; \
|
|
ch &= 0x03; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* We expect six bytes. */ \
|
|
cnt = 6; \
|
|
ch &= 0x01; \
|
|
} \
|
|
\
|
|
/* The first byte is already consumed. */ \
|
|
r = cnt - 1; \
|
|
while (++(*inptrp) < inend) \
|
|
{ \
|
|
ch <<= 6; \
|
|
ch |= **inptrp & 0x3f; \
|
|
--r; \
|
|
} \
|
|
\
|
|
/* Shift for the so far missing bytes. */ \
|
|
ch <<= r * 6; \
|
|
\
|
|
/* Store the number of bytes expected for the entire sequence. */ \
|
|
state->__count |= cnt << 8; \
|
|
\
|
|
/* Store the value. */ \
|
|
state->__value.__wch = ch; \
|
|
}
|
|
|
|
#define UNPACK_BYTES \
|
|
{ \
|
|
static const unsigned char inmask[5] = { 0xc0, 0xe0, 0xf0, 0xf8, 0xfc }; \
|
|
wint_t wch = state->__value.__wch; \
|
|
size_t ntotal = state->__count >> 8; \
|
|
\
|
|
inlen = state->__count & 255; \
|
|
\
|
|
bytebuf[0] = inmask[ntotal - 2]; \
|
|
\
|
|
do \
|
|
{ \
|
|
if (--ntotal < inlen) \
|
|
bytebuf[ntotal] = 0x80 | (wch & 0x3f); \
|
|
wch >>= 6; \
|
|
} \
|
|
while (ntotal > 1); \
|
|
\
|
|
bytebuf[0] |= wch; \
|
|
}
|
|
|
|
#define CLEAR_STATE \
|
|
state->__count = 0
|
|
|
|
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UCS2 to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 2
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ucs2_internal_loop
|
|
#define TO_LOOP ucs2_internal_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_ucs2_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint16_t u1 = get16 (inptr); \
|
|
\
|
|
if (__builtin_expect (u1 >= 0xd800 && u1 < 0xe000, 0)) \
|
|
{ \
|
|
/* Surrogate characters in UCS-2 input are not valid. Reject \
|
|
them. (Catching this here is not security relevant.) */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (2); \
|
|
} \
|
|
\
|
|
*((uint32_t *) outptr) = u1; \
|
|
outptr += sizeof (uint32_t); \
|
|
inptr += 2; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to UCS2. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 2
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_ucs2_loop
|
|
#define TO_LOOP internal_ucs2_loop /* This is not used. */
|
|
#define FUNCTION_NAME __gconv_transform_internal_ucs2
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t val = *((const uint32_t *) inptr); \
|
|
\
|
|
if (__builtin_expect (val >= 0x10000, 0)) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (val, 4); \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
else if (__builtin_expect (val >= 0xd800 && val < 0xe000, 0)) \
|
|
{ \
|
|
/* Surrogate characters in UCS-4 input are not valid. \
|
|
We must catch this, because the UCS-2 output might be \
|
|
interpreted as UTF-16 by other programs. If we let \
|
|
surrogates pass through, attackers could make a security \
|
|
hole exploit by synthesizing any desired plane 1-16 \
|
|
character. */ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
if (! ignore_errors_p ()) \
|
|
break; \
|
|
inptr += 4; \
|
|
++*irreversible; \
|
|
continue; \
|
|
} \
|
|
else \
|
|
{ \
|
|
put16 (outptr, val); \
|
|
outptr += sizeof (uint16_t); \
|
|
inptr += 4; \
|
|
} \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from UCS2 in other endianness to the internal (UCS4-like) format. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 2
|
|
#define MIN_NEEDED_TO 4
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP ucs2reverse_internal_loop
|
|
#define TO_LOOP ucs2reverse_internal_loop/* This is not used.*/
|
|
#define FUNCTION_NAME __gconv_transform_ucs2reverse_internal
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint16_t u1 = bswap_16 (get16 (inptr)); \
|
|
\
|
|
if (__builtin_expect (u1 >= 0xd800 && u1 < 0xe000, 0)) \
|
|
{ \
|
|
/* Surrogate characters in UCS-2 input are not valid. Reject \
|
|
them. (Catching this here is not security relevant.) */ \
|
|
if (! ignore_errors_p ()) \
|
|
{ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
inptr += 2; \
|
|
++*irreversible; \
|
|
continue; \
|
|
} \
|
|
\
|
|
*((uint32_t *) outptr) = u1; \
|
|
outptr += sizeof (uint32_t); \
|
|
inptr += 2; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|
|
|
|
|
|
/* Convert from the internal (UCS4-like) format to UCS2 in other endianness. */
|
|
#define DEFINE_INIT 0
|
|
#define DEFINE_FINI 0
|
|
#define MIN_NEEDED_FROM 4
|
|
#define MIN_NEEDED_TO 2
|
|
#define FROM_DIRECTION 1
|
|
#define FROM_LOOP internal_ucs2reverse_loop
|
|
#define TO_LOOP internal_ucs2reverse_loop/* This is not used.*/
|
|
#define FUNCTION_NAME __gconv_transform_internal_ucs2reverse
|
|
#define ONE_DIRECTION 1
|
|
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t val = *((const uint32_t *) inptr); \
|
|
if (__builtin_expect (val >= 0x10000, 0)) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (val, 4); \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
else if (__builtin_expect (val >= 0xd800 && val < 0xe000, 0)) \
|
|
{ \
|
|
/* Surrogate characters in UCS-4 input are not valid. \
|
|
We must catch this, because the UCS-2 output might be \
|
|
interpreted as UTF-16 by other programs. If we let \
|
|
surrogates pass through, attackers could make a security \
|
|
hole exploit by synthesizing any desired plane 1-16 \
|
|
character. */ \
|
|
if (! ignore_errors_p ()) \
|
|
{ \
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
inptr += 4; \
|
|
++*irreversible; \
|
|
continue; \
|
|
} \
|
|
else \
|
|
{ \
|
|
put16 (outptr, bswap_16 (val)); \
|
|
outptr += sizeof (uint16_t); \
|
|
inptr += 4; \
|
|
} \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
#include <iconv/skeleton.c>
|