| /* Simple transformations functions. |
| Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| 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 |
| Lesser General Public License for more details. |
| |
| 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> |
| #include <endian.h> |
| #include <errno.h> |
| #include <gconv.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <wchar.h> |
| #include <sys/param.h> |
| #include <gconv_int.h> |
| |
| #define BUILTIN_ALIAS(s1, s2) /* nothing */ |
| #define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, BtowcFct, \ |
| MinF, MaxF, MinT, MaxT) \ |
| extern int Fct (struct __gconv_step *, struct __gconv_step_data *, \ |
| const unsigned char **, const unsigned char *, \ |
| unsigned char **, size_t *, int, int); |
| #include "gconv_builtin.h" |
| |
| |
| #ifndef EILSEQ |
| # define EILSEQ EINVAL |
| #endif |
| |
| |
| /* Specialized conversion function for a single byte to INTERNAL, recognizing |
| only ASCII characters. */ |
| wint_t |
| __gconv_btwoc_ascii (struct __gconv_step *step, unsigned char c) |
| { |
| if (c < 0x80) |
| return c; |
| else |
| return WEOF; |
| } |
| |
| |
| /* Transform from the internal, UCS4-like format, to UCS4. The |
| difference between the internal ucs4 format and the real UCS4 |
| format is, if any, the endianess. The Unicode/ISO 10646 says that |
| unless some higher protocol specifies it differently, the byte |
| order is big endian.*/ |
| #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 internal_ucs4_loop |
| #define TO_LOOP internal_ucs4_loop /* This is not used. */ |
| #define FUNCTION_NAME __gconv_transform_internal_ucs4 |
| #define ONE_DIRECTION 0 |
| |
| |
| static inline int |
| __attribute ((always_inline)) |
| internal_ucs4_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 == __LITTLE_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); |
| |
| *inptrp = inptr; |
| *outptrp = (unsigned char *) outptr32; |
| #elif __BYTE_ORDER == __BIG_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) |
| result = __GCONV_FULL_OUTPUT; |
| else |
| result = __GCONV_INCOMPLETE_INPUT; |
| |
| return result; |
| } |
| |
| #if !_STRING_ARCH_unaligned |
| static inline int |
| __attribute ((always_inline)) |
| internal_ucs4_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 == __LITTLE_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 == __BIG_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) |
| result = __GCONV_FULL_OUTPUT; |
| else |
| result = __GCONV_INCOMPLETE_INPUT; |
| |
| return result; |
| } |
| #endif |
| |
| |
| static inline int |
| __attribute ((always_inline)) |
| internal_ucs4_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 (__glibc_unlikely (cnt < 4)) |
| { |
| /* Still not enough bytes. Store the ones in the input buffer. */ |
| state->__count &= ~7; |
| state->__count |= cnt; |
| |
| return __GCONV_INCOMPLETE_INPUT; |
| } |
| |
| #if __BYTE_ORDER == __LITTLE_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]; |
| |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| /* 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]; |
| #else |
| # error "This endianess is not supported." |
| #endif |
| *outptrp += 4; |
| |
| /* Clear the state buffer. */ |
| state->__count &= ~7; |
| |
| return __GCONV_OK; |
| } |
| |
| #include <iconv/skeleton.c> |
| |
| |
| /* Transform from UCS4 to the internal, UCS4-like format. Unlike |
| for the other direction we have to check for correct values here. */ |
| #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 ucs4_internal_loop |
| #define TO_LOOP ucs4_internal_loop /* This is not used. */ |
| #define FUNCTION_NAME __gconv_transform_ucs4_internal |
| #define ONE_DIRECTION 0 |
| |
| |
| static inline int |
| __attribute ((always_inline)) |
| ucs4_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 == __LITTLE_ENDIAN |
| inval = bswap_32 (*(const uint32_t *) inptr); |
| #else |
| inval = *(const uint32_t *) inptr; |
| #endif |
| |
| if (__glibc_unlikely (inval > 0x7fffffff)) |
| { |
| /* 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; |
| } |
| |
| *((uint32_t *) outptr) = inval; |
| outptr += sizeof (uint32_t); |
| } |
| |
| *inptrp = inptr; |
| *outptrp = outptr; |
| |
| /* Determine the status. */ |
| if (*inptrp == inend) |
| result = __GCONV_EMPTY_INPUT; |
| else if (*outptrp + 4 > outend) |
| result = __GCONV_FULL_OUTPUT; |
| else |
| result = __GCONV_INCOMPLETE_INPUT; |
| |
| return result; |
| } |
| |
| #if !_STRING_ARCH_unaligned |
| static inline int |
| __attribute ((always_inline)) |
| ucs4_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 (__glibc_unlikely (inptr[0] > 0x80)) |
| { |
| /* 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 == __LITTLE_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 (*outptrp + 4 > outend) |
| result = __GCONV_FULL_OUTPUT; |
| else |
| result = __GCONV_INCOMPLETE_INPUT; |
| |
| return result; |
| } |
| #endif |
| |
| |
| static inline int |
| __attribute ((always_inline)) |
| ucs4_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 (__glibc_unlikely (cnt < 4)) |
| { |
| /* 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)[0] > 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)) |
| { |
| *inptrp -= cnt - (state->__count & 7); |
| return __GCONV_ILLEGAL_INPUT; |
| } |
| } |
| else |
| { |
| #if __BYTE_ORDER == __LITTLE_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]; |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| (*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> |
| |
| |
| /* Similarly for the little endian form. */ |
| #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 internal_ucs4le_loop |
| #define TO_LOOP internal_ucs4le_loop /* This is not used. */ |
| #define FUNCTION_NAME __gconv_transform_internal_ucs4le |
| #define ONE_DIRECTION 0 |
| |
| |
| static inline int |
| __attribute ((always_inline)) |
| 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); |
| 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) |
| result = __GCONV_FULL_OUTPUT; |
| else |
| result = __GCONV_INCOMPLETE_INPUT; |
| |
| return result; |
| } |
| |
| #if !_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 (__glibc_unlikely (cnt < 4)) |
| { |
| /* 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 |
| #define ONE_DIRECTION 0 |
| |
| |
| 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 (__glibc_unlikely (inval > 0x7fffffff)) |
| { |
| /* 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; |
| } |
| |
| #if !_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 (__glibc_unlikely (inptr[3] > 0x80)) |
| { |
| /* 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 (__glibc_unlikely (cnt < 4)) |
| { |
| /* 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 (__glibc_unlikely (*inptr > '\x7f')) \ |
| { \ |
| /* 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 (__glibc_unlikely (*((const uint32_t *) inptr) > 0x7f)) \ |
| { \ |
| 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 (__glibc_likely (wc < 0x80)) \ |
| /* It's an one byte sequence. */ \ |
| *outptr++ = (unsigned char) wc; \ |
| else if (__glibc_likely (wc <= 0x7fffffff)) \ |
| { \ |
| size_t step; \ |
| unsigned char *start; \ |
| \ |
| for (step = 2; step < 6; ++step) \ |
| if ((wc & (~(uint32_t)0 << (5 * step + 1))) == 0) \ |
| break; \ |
| \ |
| if (__glibc_unlikely (outptr + step > outend)) \ |
| { \ |
| /* 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 \ |
| { \ |
| /* Next input byte. */ \ |
| uint32_t ch = *inptr; \ |
| \ |
| if (__glibc_likely (ch < 0x80)) \ |
| { \ |
| /* One byte sequence. */ \ |
| ++inptr; \ |
| } \ |
| else \ |
| { \ |
| uint_fast32_t cnt; \ |
| uint_fast32_t i; \ |
| \ |
| 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 (__glibc_likely ((ch & 0xf0) == 0xe0)) \ |
| { \ |
| /* We expect three bytes. */ \ |
| cnt = 3; \ |
| ch &= 0x0f; \ |
| } \ |
| else if (__glibc_likely ((ch & 0xf8) == 0xf0)) \ |
| { \ |
| /* We expect four bytes. */ \ |
| cnt = 4; \ |
| ch &= 0x07; \ |
| } \ |
| else if (__glibc_likely ((ch & 0xfc) == 0xf8)) \ |
| { \ |
| /* We expect five bytes. */ \ |
| cnt = 5; \ |
| ch &= 0x03; \ |
| } \ |
| else if (__glibc_likely ((ch & 0xfe) == 0xfc)) \ |
| { \ |
| /* 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 (__glibc_unlikely (inptr + cnt > inend)) \ |
| { \ |
| /* 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 (__glibc_likely (inptr + i == inend)) \ |
| { \ |
| 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) \ |
| /* Do not accept UTF-16 surrogates. */ \ |
| || (ch >= 0xd800 && ch <= 0xdfff)) \ |
| { \ |
| /* 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; \ |
| \ |
| assert (ch != 0xc0 && ch != 0xc1); \ |
| 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 (__glibc_likely ((ch & 0xf0) == 0xe0)) \ |
| { \ |
| /* We expect three bytes. */ \ |
| cnt = 3; \ |
| ch &= 0x0f; \ |
| } \ |
| else if (__glibc_likely ((ch & 0xf8) == 0xf0)) \ |
| { \ |
| /* We expect four bytes. */ \ |
| cnt = 4; \ |
| ch &= 0x07; \ |
| } \ |
| else if (__glibc_likely ((ch & 0xfc) == 0xf8)) \ |
| { \ |
| /* 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 (__glibc_unlikely (u1 >= 0xd800 && u1 < 0xe000)) \ |
| { \ |
| /* 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 (__glibc_unlikely (val >= 0x10000)) \ |
| { \ |
| UNICODE_TAG_HANDLER (val, 4); \ |
| STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
| } \ |
| else if (__glibc_unlikely (val >= 0xd800 && val < 0xe000)) \ |
| { \ |
| /* 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 (__glibc_unlikely (u1 >= 0xd800 && u1 < 0xe000)) \ |
| { \ |
| /* 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 (__glibc_unlikely (val >= 0x10000)) \ |
| { \ |
| UNICODE_TAG_HANDLER (val, 4); \ |
| STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
| } \ |
| else if (__glibc_unlikely (val >= 0xd800 && val < 0xe000)) \ |
| { \ |
| /* 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> |