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fuchsia / third_party / libarchive / 43a42eeffb032c218e146f0dbae385c98d1054d1 / . / libarchive / archive_string.c
blob: 592ead2bdd58bc7d6346ce814f07eca9b57b047c [file] [log] [blame]
/*-
* Copyright (c) 2003-2011 Tim Kientzle
* Copyright (c) 2011-2012 Michihiro NAKAJIMA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "archive_platform.h"
__FBSDID("$FreeBSD: head/lib/libarchive/archive_string.c 201095 2009-12-28 02:33:22Z kientzle $");
/*
* Basic resizable string support, to simplify manipulating arbitrary-sized
* strings while minimizing heap activity.
*
* In particular, the buffer used by a string object is only grown, it
* never shrinks, so you can clear and reuse the same string object
* without incurring additional memory allocations.
*/
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_ICONV_H
#include <iconv.h>
#endif
#ifdef HAVE_LANGINFO_H
#include <langinfo.h>
#endif
#ifdef HAVE_LOCALCHARSET_H
#include <localcharset.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_WCHAR_H
#include <wchar.h>
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <windows.h>
#include <locale.h>
#endif
#include "archive_endian.h"
#include "archive_private.h"
#include "archive_string.h"
#include "archive_string_composition.h"
#if !defined(HAVE_WMEMCPY) && !defined(wmemcpy)
#define wmemcpy(a,b,i) (wchar_t *)memcpy((a), (b), (i) * sizeof(wchar_t))
#endif
#if !defined(HAVE_WMEMMOVE) && !defined(wmemmove)
#define wmemmove(a,b,i) (wchar_t *)memmove((a), (b), (i) * sizeof(wchar_t))
#endif
struct archive_string_conv {
struct archive_string_conv *next;
char *from_charset;
char *to_charset;
unsigned from_cp;
unsigned to_cp;
/* Set 1 if from_charset and to_charset are the same. */
int same;
int flag;
#define SCONV_TO_CHARSET 1 /* MBS is being converted to specified
* charset. */
#define SCONV_FROM_CHARSET (1<<1) /* MBS is being converted from
* specified charset. */
#define SCONV_BEST_EFFORT (1<<2) /* Copy at least ASCII code. */
#define SCONV_WIN_CP (1<<3) /* Use Windows API for converting
* MBS. */
#define SCONV_UTF8_LIBARCHIVE_2 (1<<4) /* Incorrect UTF-8 made by libarchive
* 2.x in the wrong assumption. */
#define SCONV_NORMALIZATION_C (1<<6) /* Need normalization to be Form C.
* Before UTF-8 characters are actually
* processed. */
#define SCONV_NORMALIZATION_D (1<<7) /* Need normalization to be Form D.
* Before UTF-8 characters are actually
* processed.
* Currently this only for MAC OS X. */
#define SCONV_TO_UTF8 (1<<8) /* "to charset" side is UTF-8. */
#define SCONV_FROM_UTF8 (1<<9) /* "from charset" side is UTF-8. */
#define SCONV_TO_UTF16BE (1<<10) /* "to charset" side is UTF-16BE. */
#define SCONV_FROM_UTF16BE (1<<11) /* "from charset" side is UTF-16BE. */
#define SCONV_TO_UTF16LE (1<<12) /* "to charset" side is UTF-16LE. */
#define SCONV_FROM_UTF16LE (1<<13) /* "from charset" side is UTF-16LE. */
#define SCONV_TO_UTF16 (SCONV_TO_UTF16BE | SCONV_TO_UTF16LE)
#define SCONV_FROM_UTF16 (SCONV_FROM_UTF16BE | SCONV_FROM_UTF16LE)
#if HAVE_ICONV
iconv_t cd;
iconv_t cd_w;/* Use at archive_mstring on
* Windows. */
#endif
/* A temporary buffer for normalization. */
struct archive_string utftmp;
int (*converter[2])(struct archive_string *, const void *, size_t,
struct archive_string_conv *);
int nconverter;
};
#define CP_C_LOCALE 0 /* "C" locale only for this file. */
#define CP_UTF16LE 1200
#define CP_UTF16BE 1201
#define IS_HIGH_SURROGATE_LA(uc) ((uc) >= 0xD800 && (uc) <= 0xDBFF)
#define IS_LOW_SURROGATE_LA(uc) ((uc) >= 0xDC00 && (uc) <= 0xDFFF)
#define IS_SURROGATE_PAIR_LA(uc) ((uc) >= 0xD800 && (uc) <= 0xDFFF)
#define UNICODE_MAX 0x10FFFF
#define UNICODE_R_CHAR 0xFFFD /* Replacement character. */
/* Set U+FFFD(Replacement character) in UTF-8. */
static const char utf8_replacement_char[] = {0xef, 0xbf, 0xbd};
static struct archive_string_conv *find_sconv_object(struct archive *,
const char *, const char *);
static void add_sconv_object(struct archive *, struct archive_string_conv *);
static struct archive_string_conv *create_sconv_object(const char *,
const char *, unsigned, int);
static void free_sconv_object(struct archive_string_conv *);
static struct archive_string_conv *get_sconv_object(struct archive *,
const char *, const char *, int);
static unsigned make_codepage_from_charset(const char *);
static unsigned get_current_codepage(void);
static unsigned get_current_oemcp(void);
static size_t mbsnbytes(const void *, size_t);
static size_t utf16nbytes(const void *, size_t);
#if defined(_WIN32) && !defined(__CYGWIN__)
static int archive_wstring_append_from_mbs_in_codepage(
struct archive_wstring *, const char *, size_t,
struct archive_string_conv *);
static int archive_string_append_from_wcs_in_codepage(struct archive_string *,
const wchar_t *, size_t, struct archive_string_conv *);
static int is_big_endian(void);
static int strncat_in_codepage(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int win_strncat_from_utf16be(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int win_strncat_from_utf16le(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int win_strncat_to_utf16be(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int win_strncat_to_utf16le(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
#endif
static int best_effort_strncat_from_utf16be(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static int best_effort_strncat_from_utf16le(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static int best_effort_strncat_to_utf16be(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static int best_effort_strncat_to_utf16le(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
#if defined(HAVE_ICONV)
static int iconv_strncat_in_locale(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
#endif
static int best_effort_strncat_in_locale(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static int _utf8_to_unicode(uint32_t *, const char *, size_t);
static int utf8_to_unicode(uint32_t *, const char *, size_t);
static inline uint32_t combine_surrogate_pair(uint32_t, uint32_t);
static int cesu8_to_unicode(uint32_t *, const char *, size_t);
static size_t unicode_to_utf8(char *, size_t, uint32_t);
static int utf16_to_unicode(uint32_t *, const char *, size_t, int);
static size_t unicode_to_utf16be(char *, size_t, uint32_t);
static size_t unicode_to_utf16le(char *, size_t, uint32_t);
static int strncat_from_utf8_libarchive2(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static int strncat_from_utf8_to_utf8(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int archive_string_normalize_C(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int archive_string_normalize_D(struct archive_string *, const void *,
size_t, struct archive_string_conv *);
static int archive_string_append_unicode(struct archive_string *,
const void *, size_t, struct archive_string_conv *);
static struct archive_string *
archive_string_append(struct archive_string *as, const char *p, size_t s)
{
if (archive_string_ensure(as, as->length + s + 1) == NULL)
return (NULL);
memmove(as->s + as->length, p, s);
as->length += s;
as->s[as->length] = 0;
return (as);
}
static struct archive_wstring *
archive_wstring_append(struct archive_wstring *as, const wchar_t *p, size_t s)
{
if (archive_wstring_ensure(as, as->length + s + 1) == NULL)
return (NULL);
wmemmove(as->s + as->length, p, s);
as->length += s;
as->s[as->length] = 0;
return (as);
}
struct archive_string *
archive_array_append(struct archive_string *as, const char *p, size_t s)
{
return archive_string_append(as, p, s);
}
void
archive_string_concat(struct archive_string *dest, struct archive_string *src)
{
if (archive_string_append(dest, src->s, src->length) == NULL)
__archive_errx(1, "Out of memory");
}
void
archive_wstring_concat(struct archive_wstring *dest,
struct archive_wstring *src)
{
if (archive_wstring_append(dest, src->s, src->length) == NULL)
__archive_errx(1, "Out of memory");
}
void
archive_string_free(struct archive_string *as)
{
as->length = 0;
as->buffer_length = 0;
free(as->s);
as->s = NULL;
}
void
archive_wstring_free(struct archive_wstring *as)
{
as->length = 0;
as->buffer_length = 0;
free(as->s);
as->s = NULL;
}
struct archive_wstring *
archive_wstring_ensure(struct archive_wstring *as, size_t s)
{
return (struct archive_wstring *)
archive_string_ensure((struct archive_string *)as,
s * sizeof(wchar_t));
}
/* Returns NULL on any allocation failure. */
struct archive_string *
archive_string_ensure(struct archive_string *as, size_t s)
{
char *p;
size_t new_length;
/* If buffer is already big enough, don't reallocate. */
if (as->s && (s <= as->buffer_length))
return (as);
/*
* Growing the buffer at least exponentially ensures that
* append operations are always linear in the number of
* characters appended. Using a smaller growth rate for
* larger buffers reduces memory waste somewhat at the cost of
* a larger constant factor.
*/
if (as->buffer_length < 32)
/* Start with a minimum 32-character buffer. */
new_length = 32;
else if (as->buffer_length < 8192)
/* Buffers under 8k are doubled for speed. */
new_length = as->buffer_length + as->buffer_length;
else {
/* Buffers 8k and over grow by at least 25% each time. */
new_length = as->buffer_length + as->buffer_length / 4;
/* Be safe: If size wraps, fail. */
if (new_length < as->buffer_length) {
/* On failure, wipe the string and return NULL. */
archive_string_free(as);
errno = ENOMEM;/* Make sure errno has ENOMEM. */
return (NULL);
}
}
/*
* The computation above is a lower limit to how much we'll
* grow the buffer. In any case, we have to grow it enough to
* hold the request.
*/
if (new_length < s)
new_length = s;
/* Now we can reallocate the buffer. */
p = (char *)realloc(as->s, new_length);
if (p == NULL) {
/* On failure, wipe the string and return NULL. */
archive_string_free(as);
errno = ENOMEM;/* Make sure errno has ENOMEM. */
return (NULL);
}
as->s = p;
as->buffer_length = new_length;
return (as);
}
/*
* TODO: See if there's a way to avoid scanning
* the source string twice. Then test to see
* if it actually helps (remember that we're almost
* always called with pretty short arguments, so
* such an optimization might not help).
*/
struct archive_string *
archive_strncat(struct archive_string *as, const void *_p, size_t n)
{
size_t s;
const char *p, *pp;
p = (const char *)_p;
/* Like strlen(p), except won't examine positions beyond p[n]. */
s = 0;
pp = p;
while (s < n && *pp) {
pp++;
s++;
}
if ((as = archive_string_append(as, p, s)) == NULL)
__archive_errx(1, "Out of memory");
return (as);
}
struct archive_wstring *
archive_wstrncat(struct archive_wstring *as, const wchar_t *p, size_t n)
{
size_t s;
const wchar_t *pp;
/* Like strlen(p), except won't examine positions beyond p[n]. */
s = 0;
pp = p;
while (s < n && *pp) {
pp++;
s++;
}
if ((as = archive_wstring_append(as, p, s)) == NULL)
__archive_errx(1, "Out of memory");
return (as);
}
struct archive_string *
archive_strcat(struct archive_string *as, const void *p)
{
/* strcat is just strncat without an effective limit.
* Assert that we'll never get called with a source
* string over 16MB.
* TODO: Review all uses of strcat in the source
* and try to replace them with strncat().
*/
return archive_strncat(as, p, 0x1000000);
}
struct archive_wstring *
archive_wstrcat(struct archive_wstring *as, const wchar_t *p)
{
/* Ditto. */
return archive_wstrncat(as, p, 0x1000000);
}
struct archive_string *
archive_strappend_char(struct archive_string *as, char c)
{
if ((as = archive_string_append(as, &c, 1)) == NULL)
__archive_errx(1, "Out of memory");
return (as);
}
struct archive_wstring *
archive_wstrappend_wchar(struct archive_wstring *as, wchar_t c)
{
if ((as = archive_wstring_append(as, &c, 1)) == NULL)
__archive_errx(1, "Out of memory");
return (as);
}
/*
* Get the "current character set" name to use with iconv.
* On FreeBSD, the empty character set name "" chooses
* the correct character encoding for the current locale,
* so this isn't necessary.
* But iconv on Mac OS 10.6 doesn't seem to handle this correctly;
* on that system, we have to explicitly call nl_langinfo()
* to get the right name. Not sure about other platforms.
*
* NOTE: GNU libiconv does not recognize the character-set name
* which some platform nl_langinfo(CODESET) returns, so we should
* use locale_charset() instead of nl_langinfo(CODESET) for GNU libiconv.
*/
static const char *
default_iconv_charset(const char *charset) {
if (charset != NULL && charset[0] != '\0')
return charset;
#if HAVE_LOCALE_CHARSET && !defined(__APPLE__)
/* locale_charset() is broken on Mac OS */
return locale_charset();
#elif HAVE_NL_LANGINFO
return nl_langinfo(CODESET);
#else
return "";
#endif
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/*
* Convert MBS to WCS.
* Note: returns -1 if conversion fails.
*/
int
archive_wstring_append_from_mbs(struct archive_wstring *dest,
const char *p, size_t len)
{
return archive_wstring_append_from_mbs_in_codepage(dest, p, len, NULL);
}
static int
archive_wstring_append_from_mbs_in_codepage(struct archive_wstring *dest,
const char *s, size_t length, struct archive_string_conv *sc)
{
int count, ret = 0;
UINT from_cp;
if (sc != NULL)
from_cp = sc->from_cp;
else
from_cp = get_current_codepage();
if (from_cp == CP_C_LOCALE) {
/*
* "C" locale special process.
*/
wchar_t *ws;
const unsigned char *mp;
if (NULL == archive_wstring_ensure(dest,
dest->length + length + 1))
return (-1);
ws = dest->s + dest->length;
mp = (const unsigned char *)s;
count = 0;
while (count < (int)length && *mp) {
*ws++ = (wchar_t)*mp++;
count++;
}
} else if (sc != NULL &&
(sc->flag & (SCONV_NORMALIZATION_C | SCONV_NORMALIZATION_D))) {
/*
* Normalize UTF-8 and UTF-16BE and convert it directly
* to UTF-16 as wchar_t.
*/
struct archive_string u16;
int saved_flag = sc->flag;/* save current flag. */
if (is_big_endian())
sc->flag |= SCONV_TO_UTF16BE;
else
sc->flag |= SCONV_TO_UTF16LE;
if (sc->flag & SCONV_FROM_UTF16) {
/*
* UTF-16BE/LE NFD ===> UTF-16 NFC
* UTF-16BE/LE NFC ===> UTF-16 NFD
*/
count = (int)utf16nbytes(s, length);
} else {
/*
* UTF-8 NFD ===> UTF-16 NFC
* UTF-8 NFC ===> UTF-16 NFD
*/
count = (int)mbsnbytes(s, length);
}
u16.s = (char *)dest->s;
u16.length = dest->length << 1;;
u16.buffer_length = dest->buffer_length;
if (sc->flag & SCONV_NORMALIZATION_C)
ret = archive_string_normalize_C(&u16, s, count, sc);
else
ret = archive_string_normalize_D(&u16, s, count, sc);
dest->s = (wchar_t *)u16.s;
dest->length = u16.length >> 1;
dest->buffer_length = u16.buffer_length;
sc->flag = saved_flag;/* restore the saved flag. */
return (ret);
} else if (sc != NULL && (sc->flag & SCONV_FROM_UTF16)) {
count = (int)utf16nbytes(s, length);
count >>= 1; /* to be WCS length */
/* Allocate memory for WCS. */
if (NULL == archive_wstring_ensure(dest,
dest->length + count + 1))
return (-1);
wmemcpy(dest->s + dest->length, (const wchar_t *)s, count);
if ((sc->flag & SCONV_FROM_UTF16BE) && !is_big_endian()) {
uint16_t *u16 = (uint16_t *)(dest->s + dest->length);
int b;
for (b = 0; b < count; b++) {
uint16_t val = archive_le16dec(u16+b);
archive_be16enc(u16+b, val);
}
} else if ((sc->flag & SCONV_FROM_UTF16LE) && is_big_endian()) {
uint16_t *u16 = (uint16_t *)(dest->s + dest->length);
int b;
for (b = 0; b < count; b++) {
uint16_t val = archive_be16dec(u16+b);
archive_le16enc(u16+b, val);
}
}
} else {
DWORD mbflag;
size_t buffsize;
if (sc == NULL)
mbflag = 0;
else if (sc->flag & SCONV_FROM_CHARSET) {
/* Do not trust the length which comes from
* an archive file. */
length = mbsnbytes(s, length);
mbflag = 0;
} else
mbflag = MB_PRECOMPOSED;
buffsize = dest->length + length + 1;
do {
/* Allocate memory for WCS. */
if (NULL == archive_wstring_ensure(dest, buffsize))
return (-1);
/* Convert MBS to WCS. */
count = MultiByteToWideChar(from_cp,
mbflag, s, (int)length, dest->s + dest->length,
(int)(dest->buffer_length >> 1) -1);
if (count == 0 &&
GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
/* Expand the WCS buffer. */
buffsize = dest->buffer_length << 1;
continue;
}
if (count == 0 && length != 0)
ret = -1;
break;
} while (1);
}
dest->length += count;
dest->s[dest->length] = L'\0';
return (ret);
}
#else
/*
* Convert MBS to WCS.
* Note: returns -1 if conversion fails.
*/
int
archive_wstring_append_from_mbs(struct archive_wstring *dest,
const char *p, size_t len)
{
size_t r;
int ret_val = 0;
/*
* No single byte will be more than one wide character,
* so this length estimate will always be big enough.
*/
size_t wcs_length = len;
size_t mbs_length = len;
const char *mbs = p;
wchar_t *wcs;
#if HAVE_MBRTOWC
mbstate_t shift_state;
memset(&shift_state, 0, sizeof(shift_state));
#endif
if (NULL == archive_wstring_ensure(dest, dest->length + wcs_length + 1))
return (-1);
wcs = dest->s + dest->length;
/*
* We cannot use mbsrtowcs/mbstowcs here because those may convert
* extra MBS when strlen(p) > len and one wide character consists of
* multi bytes.
*/
while (*mbs && mbs_length > 0) {
if (wcs_length == 0) {
dest->length = wcs - dest->s;
dest->s[dest->length] = L'\0';
wcs_length = mbs_length;
if (NULL == archive_wstring_ensure(dest,
dest->length + wcs_length + 1))
return (-1);
wcs = dest->s + dest->length;
}
#if HAVE_MBRTOWC
r = mbrtowc(wcs, mbs, wcs_length, &shift_state);
#else
r = mbtowc(wcs, mbs, wcs_length);
#endif
if (r == (size_t)-1 || r == (size_t)-2) {
ret_val = -1;
if (errno == EILSEQ) {
++mbs;
--mbs_length;
continue;
} else
break;
}
if (r == 0 || r > mbs_length)
break;
wcs++;
wcs_length--;
mbs += r;
mbs_length -= r;
}
dest->length = wcs - dest->s;
dest->s[dest->length] = L'\0';
return (ret_val);
}
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
/*
* WCS ==> MBS.
* Note: returns -1 if conversion fails.
*
* Win32 builds use WideCharToMultiByte from the Windows API.
* (Maybe Cygwin should too? WideCharToMultiByte will know a
* lot more about local character encodings than the wcrtomb()
* wrapper is going to know.)
*/
int
archive_string_append_from_wcs(struct archive_string *as,
const wchar_t *w, size_t len)
{
return archive_string_append_from_wcs_in_codepage(as, w, len, NULL);
}
static int
archive_string_append_from_wcs_in_codepage(struct archive_string *as,
const wchar_t *ws, size_t len, struct archive_string_conv *sc)
{
BOOL defchar_used, *dp;
int count, ret = 0;
UINT to_cp;
int wslen = (int)len;
if (sc != NULL)
to_cp = sc->to_cp;
else
to_cp = get_current_codepage();
if (to_cp == CP_C_LOCALE) {
/*
* "C" locale special process.
*/
const wchar_t *wp = ws;
char *p;
if (NULL == archive_string_ensure(as,
as->length + wslen +1))
return (-1);
p = as->s + as->length;
count = 0;
defchar_used = 0;
while (count < wslen && *wp) {
if (*wp > 255) {
*p++ = '?';
wp++;
defchar_used = 1;
} else
*p++ = (char)*wp++;
count++;
}
} else if (sc != NULL && (sc->flag & SCONV_TO_UTF16)) {
uint16_t *u16;
if (NULL ==
archive_string_ensure(as, as->length + len * 2 + 2))
return (-1);
u16 = (uint16_t *)(as->s + as->length);
count = 0;
defchar_used = 0;
if (sc->flag & SCONV_TO_UTF16BE) {
while (count < (int)len && *ws) {
archive_be16enc(u16+count, *ws);
ws++;
count++;
}
} else {
while (count < (int)len && *ws) {
archive_le16enc(u16+count, *ws);
ws++;
count++;
}
}
count <<= 1; /* to be byte size */
} else {
/* Make sure the MBS buffer has plenty to set. */
if (NULL ==
archive_string_ensure(as, as->length + len * 2 + 1))
return (-1);
do {
defchar_used = 0;
if (to_cp == CP_UTF8 || sc == NULL)
dp = NULL;
else
dp = &defchar_used;
count = WideCharToMultiByte(to_cp, 0, ws, wslen,
as->s + as->length, (int)as->buffer_length-1, NULL, dp);
if (count == 0 &&
GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
/* Expand the MBS buffer and retry. */
if (NULL == archive_string_ensure(as,
as->buffer_length + len))
return (-1);
continue;
}
if (count == 0)
ret = -1;
break;
} while (1);
}
as->length += count;
as->s[as->length] = '\0';
return (defchar_used?-1:ret);
}
#elif defined(HAVE_WCTOMB) || defined(HAVE_WCRTOMB)
/*
* Translates a wide character string into current locale character set
* and appends to the archive_string. Note: returns -1 if conversion
* fails.
*/
int
archive_string_append_from_wcs(struct archive_string *as,
const wchar_t *w, size_t len)
{
/* We cannot use the standard wcstombs() here because it
* cannot tell us how big the output buffer should be. So
* I've built a loop around wcrtomb() or wctomb() that
* converts a character at a time and resizes the string as
* needed. We prefer wcrtomb() when it's available because
* it's thread-safe. */
int n, ret_val = 0;
char *p;
char *end;
#if HAVE_WCRTOMB
mbstate_t shift_state;
memset(&shift_state, 0, sizeof(shift_state));
#else
/* Clear the shift state before starting. */
wctomb(NULL, L'\0');
#endif
/*
* Allocate buffer for MBS.
* We need this allocation here since it is possible that
* as->s is still NULL.
*/
if (archive_string_ensure(as, as->length + len + 1) == NULL)
return (-1);
p = as->s + as->length;
end = as->s + as->buffer_length - MB_CUR_MAX -1;
while (*w != L'\0' && len > 0) {
if (p >= end) {
as->length = p - as->s;
as->s[as->length] = '\0';
/* Re-allocate buffer for MBS. */
if (archive_string_ensure(as,
as->length + len * 2 + 1) == NULL)
return (-1);
p = as->s + as->length;
end = as->s + as->buffer_length - MB_CUR_MAX -1;
}
#if HAVE_WCRTOMB
n = wcrtomb(p, *w++, &shift_state);
#else
n = wctomb(p, *w++);
#endif
if (n == -1) {
if (errno == EILSEQ) {
/* Skip an illegal wide char. */
*p++ = '?';
ret_val = -1;
} else {
ret_val = -1;
break;
}
} else
p += n;
len--;
}
as->length = p - as->s;
as->s[as->length] = '\0';
return (ret_val);
}
#else /* HAVE_WCTOMB || HAVE_WCRTOMB */
/*
* TODO: Test if __STDC_ISO_10646__ is defined.
* Non-Windows uses ISO C wcrtomb() or wctomb() to perform the conversion
* one character at a time. If a non-Windows platform doesn't have
* either of these, fall back to the built-in UTF8 conversion.
*/
int
archive_string_append_from_wcs(struct archive_string *as,
const wchar_t *w, size_t len)
{
(void)as;/* UNUSED */
(void)w;/* UNUSED */
(void)len;/* UNUSED */
errno = ENOSYS;
return (-1);
}
#endif /* HAVE_WCTOMB || HAVE_WCRTOMB */
/*
* Find a string conversion object by a pair of 'from' charset name
* and 'to' charset name from an archive object.
* Return NULL if not found.
*/
static struct archive_string_conv *
find_sconv_object(struct archive *a, const char *fc, const char *tc)
{
struct archive_string_conv *sc;
if (a == NULL)
return (NULL);
for (sc = a->sconv; sc != NULL; sc = sc->next) {
if (strcmp(sc->from_charset, fc) == 0 &&
strcmp(sc->to_charset, tc) == 0)
break;
}
return (sc);
}
/*
* Register a string object to an archive object.
*/
static void
add_sconv_object(struct archive *a, struct archive_string_conv *sc)
{
struct archive_string_conv **psc;
/* Add a new sconv to sconv list. */
psc = &(a->sconv);
while (*psc != NULL)
psc = &((*psc)->next);
*psc = sc;
}
static void
add_converter(struct archive_string_conv *sc, int (*converter)
(struct archive_string *, const void *, size_t,
struct archive_string_conv *))
{
if (sc == NULL || sc->nconverter >= 2)
__archive_errx(1, "Programing error");
sc->converter[sc->nconverter++] = converter;
}
static void
setup_converter(struct archive_string_conv *sc)
{
/* Reset. */
sc->nconverter = 0;
/*
* Perform special sequence for the incorrect UTF-8 filenames
* made by libarchive2.x.
*/
if (sc->flag & SCONV_UTF8_LIBARCHIVE_2) {
add_converter(sc, strncat_from_utf8_libarchive2);
return;
}
/*
* Convert a string to UTF-16BE/LE.
*/
if (sc->flag & SCONV_TO_UTF16) {
/*
* If the current locale is UTF-8, we can translate
* a UTF-8 string into a UTF-16BE string.
*/
if (sc->flag & SCONV_FROM_UTF8) {
add_converter(sc, archive_string_append_unicode);
return;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
if (sc->flag & SCONV_WIN_CP) {
if (sc->flag & SCONV_TO_UTF16BE)
add_converter(sc, win_strncat_to_utf16be);
else
add_converter(sc, win_strncat_to_utf16le);
return;
}
#endif
#if defined(HAVE_ICONV)
if (sc->cd != (iconv_t)-1) {
add_converter(sc, iconv_strncat_in_locale);
return;
}
#endif
if (sc->flag & SCONV_BEST_EFFORT) {
if (sc->flag & SCONV_TO_UTF16BE)
add_converter(sc,
best_effort_strncat_to_utf16be);
else
add_converter(sc,
best_effort_strncat_to_utf16le);
} else
/* Make sure we have no converter. */
sc->nconverter = 0;
return;
}
/*
* Convert a string from UTF-16BE/LE.
*/
if (sc->flag & SCONV_FROM_UTF16) {
/*
* At least we should normalize a UTF-16BE string.
*/
if (sc->flag & SCONV_NORMALIZATION_D)
add_converter(sc,archive_string_normalize_D);
else if (sc->flag & SCONV_NORMALIZATION_C)
add_converter(sc, archive_string_normalize_C);
if (sc->flag & SCONV_TO_UTF8) {
/*
* If the current locale is UTF-8, we can translate
* a UTF-16BE/LE string into a UTF-8 string directly.
*/
if (!(sc->flag &
(SCONV_NORMALIZATION_D |SCONV_NORMALIZATION_C)))
add_converter(sc,
archive_string_append_unicode);
return;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
if (sc->flag & SCONV_WIN_CP) {
if (sc->flag & SCONV_FROM_UTF16BE)
add_converter(sc, win_strncat_from_utf16be);
else
add_converter(sc, win_strncat_from_utf16le);
return;
}
#endif
#if defined(HAVE_ICONV)
if (sc->cd != (iconv_t)-1) {
add_converter(sc, iconv_strncat_in_locale);
return;
}
#endif
if ((sc->flag & (SCONV_BEST_EFFORT | SCONV_FROM_UTF16BE))
== (SCONV_BEST_EFFORT | SCONV_FROM_UTF16BE))
add_converter(sc, best_effort_strncat_from_utf16be);
else if ((sc->flag & (SCONV_BEST_EFFORT | SCONV_FROM_UTF16LE))
== (SCONV_BEST_EFFORT | SCONV_FROM_UTF16LE))
add_converter(sc, best_effort_strncat_from_utf16le);
else
/* Make sure we have no converter. */
sc->nconverter = 0;
return;
}
if (sc->flag & SCONV_FROM_UTF8) {
/*
* At least we should normalize a UTF-8 string.
*/
if (sc->flag & SCONV_NORMALIZATION_D)
add_converter(sc,archive_string_normalize_D);
else if (sc->flag & SCONV_NORMALIZATION_C)
add_converter(sc, archive_string_normalize_C);
/*
* Copy UTF-8 string with a check of CESU-8.
* Apparently, iconv does not check surrogate pairs in UTF-8
* when both from-charset and to-charset are UTF-8, and then
* we use our UTF-8 copy code.
*/
if (sc->flag & SCONV_TO_UTF8) {
/*
* If the current locale is UTF-8, we can translate
* a UTF-16BE string into a UTF-8 string directly.
*/
if (!(sc->flag &
(SCONV_NORMALIZATION_D |SCONV_NORMALIZATION_C)))
add_converter(sc, strncat_from_utf8_to_utf8);
return;
}
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/*
* On Windows we can use Windows API for a string conversion.
*/
if (sc->flag & SCONV_WIN_CP) {
add_converter(sc, strncat_in_codepage);
return;
}
#endif
#if HAVE_ICONV
if (sc->cd != (iconv_t)-1) {
add_converter(sc, iconv_strncat_in_locale);
/*
* iconv generally does not support UTF-8-MAC and so
* we have to the output of iconv from NFC to NFD if
* need.
*/
if ((sc->flag & SCONV_FROM_CHARSET) &&
(sc->flag & SCONV_TO_UTF8)) {
if (sc->flag & SCONV_NORMALIZATION_D)
add_converter(sc, archive_string_normalize_D);
}
return;
}
#endif
/*
* Try conversion in the best effort or no conversion.
*/
if ((sc->flag & SCONV_BEST_EFFORT) || sc->same)
add_converter(sc, best_effort_strncat_in_locale);
else
/* Make sure we have no converter. */
sc->nconverter = 0;
}
/*
* Return canonicalized charset-name but this supports just UTF-8, UTF-16BE
* and CP932 which are referenced in create_sconv_object().
*/
static const char *
canonical_charset_name(const char *charset)
{
char cs[16];
char *p;
const char *s;
if (charset == NULL || charset[0] == '\0'
|| strlen(charset) > 15)
return (charset);
/* Copy name to uppercase. */
p = cs;
s = charset;
while (*s) {
char c = *s++;
if (c >= 'a' && c <= 'z')
c -= 'a' - 'A';
*p++ = c;
}
*p++ = '\0';
if (strcmp(cs, "UTF-8") == 0 ||
strcmp(cs, "UTF8") == 0)
return ("UTF-8");
if (strcmp(cs, "UTF-16BE") == 0 ||
strcmp(cs, "UTF16BE") == 0)
return ("UTF-16BE");
if (strcmp(cs, "UTF-16LE") == 0 ||
strcmp(cs, "UTF16LE") == 0)
return ("UTF-16LE");
if (strcmp(cs, "CP932") == 0)
return ("CP932");
return (charset);
}
/*
* Create a string conversion object.
*/
static struct archive_string_conv *
create_sconv_object(const char *fc, const char *tc,
unsigned current_codepage, int flag)
{
struct archive_string_conv *sc;
sc = calloc(1, sizeof(*sc));
if (sc == NULL)
return (NULL);
sc->next = NULL;
sc->from_charset = strdup(fc);
if (sc->from_charset == NULL) {
free(sc);
return (NULL);
}
sc->to_charset = strdup(tc);
if (sc->to_charset == NULL) {
free(sc->from_charset);
free(sc);
return (NULL);
}
archive_string_init(&sc->utftmp);
if (flag & SCONV_TO_CHARSET) {
/*
* Convert characters from the current locale charset to
* a specified charset.
*/
sc->from_cp = current_codepage;
sc->to_cp = make_codepage_from_charset(tc);
#if defined(_WIN32) && !defined(__CYGWIN__)
if (IsValidCodePage(sc->to_cp))
flag |= SCONV_WIN_CP;
#endif
} else if (flag & SCONV_FROM_CHARSET) {
/*
* Convert characters from a specified charset to
* the current locale charset.
*/
sc->to_cp = current_codepage;
sc->from_cp = make_codepage_from_charset(fc);
#if defined(_WIN32) && !defined(__CYGWIN__)
if (IsValidCodePage(sc->from_cp))
flag |= SCONV_WIN_CP;
#endif
}
/*
* Check if "from charset" and "to charset" are the same.
*/
if (strcmp(fc, tc) == 0 ||
(sc->from_cp != (unsigned)-1 && sc->from_cp == sc->to_cp))
sc->same = 1;
else
sc->same = 0;
/*
* Mark if "from charset" or "to charset" are UTF-8 or UTF-16BE/LE.
*/
if (strcmp(tc, "UTF-8") == 0)
flag |= SCONV_TO_UTF8;
else if (strcmp(tc, "UTF-16BE") == 0)
flag |= SCONV_TO_UTF16BE;
else if (strcmp(tc, "UTF-16LE") == 0)
flag |= SCONV_TO_UTF16LE;
if (strcmp(fc, "UTF-8") == 0)
flag |= SCONV_FROM_UTF8;
else if (strcmp(fc, "UTF-16BE") == 0)
flag |= SCONV_FROM_UTF16BE;
else if (strcmp(fc, "UTF-16LE") == 0)
flag |= SCONV_FROM_UTF16LE;
#if defined(_WIN32) && !defined(__CYGWIN__)
if (sc->to_cp == CP_UTF8)
flag |= SCONV_TO_UTF8;
else if (sc->to_cp == CP_UTF16BE)
flag |= SCONV_TO_UTF16BE | SCONV_WIN_CP;
else if (sc->to_cp == CP_UTF16LE)
flag |= SCONV_TO_UTF16LE | SCONV_WIN_CP;
if (sc->from_cp == CP_UTF8)
flag |= SCONV_FROM_UTF8;
else if (sc->from_cp == CP_UTF16BE)
flag |= SCONV_FROM_UTF16BE | SCONV_WIN_CP;
else if (sc->from_cp == CP_UTF16LE)
flag |= SCONV_FROM_UTF16LE | SCONV_WIN_CP;
#endif
/*
* Set a flag for Unicode NFD. Usually iconv cannot correctly
* handle it. So we have to translate NFD characters to NFC ones
* ourselves before iconv handles. Another reason is to prevent
* that the same sight of two filenames, one is NFC and other
* is NFD, would be in its directory.
* On Mac OS X, although its filesystem layer automatically
* convert filenames to NFD, it would be useful for filename
* comparing to find out the same filenames that we normalize
* that to be NFD ourselves.
*/
if ((flag & SCONV_FROM_CHARSET) &&
(flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8))) {
#if defined(__APPLE__)
if (flag & SCONV_TO_UTF8)
flag |= SCONV_NORMALIZATION_D;
else
#endif
flag |= SCONV_NORMALIZATION_C;
}
#if defined(__APPLE__)
/*
* In case writing an archive file, make sure that a filename
* going to be passed to iconv is a Unicode NFC string since
* a filename in HFS Plus filesystem is a Unicode NFD one and
* iconv cannot handle it with "UTF-8" charset. It is simpler
* than a use of "UTF-8-MAC" charset.
*/
if ((flag & SCONV_TO_CHARSET) &&
(flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) &&
!(flag & (SCONV_TO_UTF16 | SCONV_TO_UTF8)))
flag |= SCONV_NORMALIZATION_C;
/*
* In case reading an archive file. make sure that a filename
* will be passed to users is a Unicode NFD string in order to
* correctly compare the filename with other one which comes
* from HFS Plus filesystem.
*/
if ((flag & SCONV_FROM_CHARSET) &&
!(flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) &&
(flag & SCONV_TO_UTF8))
flag |= SCONV_NORMALIZATION_D;
#endif
#if defined(HAVE_ICONV)
sc->cd_w = (iconv_t)-1;
/*
* Create an iconv object.
*/
if (((flag & (SCONV_TO_UTF8 | SCONV_TO_UTF16)) &&
(flag & (SCONV_FROM_UTF8 | SCONV_FROM_UTF16))) ||
(flag & SCONV_WIN_CP)) {
/* This case we won't use iconv. */
sc->cd = (iconv_t)-1;
} else {
sc->cd = iconv_open(tc, fc);
if (sc->cd == (iconv_t)-1 && (sc->flag & SCONV_BEST_EFFORT)) {
/*
* Unfortunately, all of iconv implements do support
* "CP932" character-set, so we should use "SJIS"
* instead if iconv_open failed.
*/
if (strcmp(tc, "CP932") == 0)
sc->cd = iconv_open("SJIS", fc);
else if (strcmp(fc, "CP932") == 0)
sc->cd = iconv_open(tc, "SJIS");
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/*
* archive_mstring on Windows directly convert multi-bytes
* into archive_wstring in order not to depend on locale
* so that you can do a I18N programming. This will be
* used only in archive_mstring_copy_mbs_len_l so far.
*/
if (flag & SCONV_FROM_CHARSET) {
sc->cd_w = iconv_open("UTF-8", fc);
if (sc->cd_w == (iconv_t)-1 &&
(sc->flag & SCONV_BEST_EFFORT)) {
if (strcmp(fc, "CP932") == 0)
sc->cd_w = iconv_open("UTF-8", "SJIS");
}
}
#endif /* _WIN32 && !__CYGWIN__ */
}
#endif /* HAVE_ICONV */
sc->flag = flag;
/*
* Set up converters.
*/
setup_converter(sc);
return (sc);
}
/*
* Free a string conversion object.
*/
static void
free_sconv_object(struct archive_string_conv *sc)
{
free(sc->from_charset);
free(sc->to_charset);
archive_string_free(&sc->utftmp);
#if HAVE_ICONV
if (sc->cd != (iconv_t)-1)
iconv_close(sc->cd);
if (sc->cd_w != (iconv_t)-1)
iconv_close(sc->cd_w);
#endif
free(sc);
}
#if defined(_WIN32) && !defined(__CYGWIN__)
static unsigned
my_atoi(const char *p)
{
unsigned cp;
cp = 0;
while (*p) {
if (*p >= '0' && *p <= '9')
cp = cp * 10 + (*p - '0');
else
return (-1);
p++;
}
return (cp);
}
/*
* Translate Charset name (as used by iconv) into CodePage (as used by Windows)
* Return -1 if failed.
*
* Note: This translation code may be insufficient.
*/
static struct charset {
const char *name;
unsigned cp;
} charsets[] = {
/* MUST BE SORTED! */
{"ASCII", 1252},
{"ASMO-708", 708},
{"BIG5", 950},
{"CHINESE", 936},
{"CP367", 1252},
{"CP819", 1252},
{"CP1025", 21025},
{"DOS-720", 720},
{"DOS-862", 862},
{"EUC-CN", 51936},
{"EUC-JP", 51932},
{"EUC-KR", 949},
{"EUCCN", 51936},
{"EUCJP", 51932},
{"EUCKR", 949},
{"GB18030", 54936},
{"GB2312", 936},
{"HEBREW", 1255},
{"HZ-GB-2312", 52936},
{"IBM273", 20273},
{"IBM277", 20277},
{"IBM278", 20278},
{"IBM280", 20280},
{"IBM284", 20284},
{"IBM285", 20285},
{"IBM290", 20290},
{"IBM297", 20297},
{"IBM367", 1252},
{"IBM420", 20420},
{"IBM423", 20423},
{"IBM424", 20424},
{"IBM819", 1252},
{"IBM871", 20871},
{"IBM880", 20880},
{"IBM905", 20905},
{"IBM924", 20924},
{"ISO-8859-1", 28591},
{"ISO-8859-13", 28603},
{"ISO-8859-15", 28605},
{"ISO-8859-2", 28592},
{"ISO-8859-3", 28593},
{"ISO-8859-4", 28594},
{"ISO-8859-5", 28595},
{"ISO-8859-6", 28596},
{"ISO-8859-7", 28597},
{"ISO-8859-8", 28598},
{"ISO-8859-9", 28599},
{"ISO8859-1", 28591},
{"ISO8859-13", 28603},
{"ISO8859-15", 28605},
{"ISO8859-2", 28592},
{"ISO8859-3", 28593},
{"ISO8859-4", 28594},
{"ISO8859-5", 28595},
{"ISO8859-6", 28596},
{"ISO8859-7", 28597},
{"ISO8859-8", 28598},
{"ISO8859-9", 28599},
{"JOHAB", 1361},
{"KOI8-R", 20866},
{"KOI8-U", 21866},
{"KS_C_5601-1987", 949},
{"LATIN1", 1252},
{"LATIN2", 28592},
{"MACINTOSH", 10000},
{"SHIFT-JIS", 932},
{"SHIFT_JIS", 932},
{"SJIS", 932},
{"US", 1252},
{"US-ASCII", 1252},
{"UTF-16", 1200},
{"UTF-16BE", 1201},
{"UTF-16LE", 1200},
{"UTF-8", CP_UTF8},
{"X-EUROPA", 29001},
{"X-MAC-ARABIC", 10004},
{"X-MAC-CE", 10029},
{"X-MAC-CHINESEIMP", 10008},
{"X-MAC-CHINESETRAD", 10002},
{"X-MAC-CROATIAN", 10082},
{"X-MAC-CYRILLIC", 10007},
{"X-MAC-GREEK", 10006},
{"X-MAC-HEBREW", 10005},
{"X-MAC-ICELANDIC", 10079},
{"X-MAC-JAPANESE", 10001},
{"X-MAC-KOREAN", 10003},
{"X-MAC-ROMANIAN", 10010},
{"X-MAC-THAI", 10021},
{"X-MAC-TURKISH", 10081},
{"X-MAC-UKRAINIAN", 10017},
};
static unsigned
make_codepage_from_charset(const char *charset)
{
char cs[16];
char *p;
unsigned cp;
int a, b;
if (charset == NULL || strlen(charset) > 15)
return -1;
/* Copy name to uppercase. */
p = cs;
while (*charset) {
char c = *charset++;
if (c >= 'a' && c <= 'z')
c -= 'a' - 'A';
*p++ = c;
}
*p++ = '\0';
cp = -1;
/* Look it up in the table first, so that we can easily
* override CP367, which we map to 1252 instead of 367. */
a = 0;
b = sizeof(charsets)/sizeof(charsets[0]);
while (b > a) {
int c = (b + a) / 2;
int r = strcmp(charsets[c].name, cs);
if (r < 0)
a = c + 1;
else if (r > 0)
b = c;
else
return charsets[c].cp;
}
/* If it's not in the table, try to parse it. */
switch (*cs) {
case 'C':
if (cs[1] == 'P' && cs[2] >= '0' && cs[2] <= '9') {
cp = my_atoi(cs + 2);
} else if (strcmp(cs, "CP_ACP") == 0)
cp = get_current_codepage();
else if (strcmp(cs, "CP_OEMCP") == 0)
cp = get_current_oemcp();
break;
case 'I':
if (cs[1] == 'B' && cs[2] == 'M' &&
cs[3] >= '0' && cs[3] <= '9') {
cp = my_atoi(cs + 3);
}
break;
case 'W':
if (strncmp(cs, "WINDOWS-", 8) == 0) {
cp = my_atoi(cs + 8);
if (cp != 874 && (cp < 1250 || cp > 1258))
cp = -1;/* This may invalid code. */
}
break;
}
return (cp);
}
/*
* Return ANSI Code Page of current locale set by setlocale().
*/
static unsigned
get_current_codepage(void)
{
char *locale, *p;
unsigned cp;
locale = setlocale(LC_CTYPE, NULL);
if (locale == NULL)
return (GetACP());
if (locale[0] == 'C' && locale[1] == '\0')
return (CP_C_LOCALE);
p = strrchr(locale, '.');
if (p == NULL)
return (GetACP());
cp = my_atoi(p+1);
if (cp <= 0)
return (GetACP());
return (cp);
}
/*
* Translation table between Locale Name and ACP/OEMCP.
*/
static struct {
unsigned acp;
unsigned ocp;
const char *locale;
} acp_ocp_map[] = {
{ 950, 950, "Chinese_Taiwan" },
{ 936, 936, "Chinese_People's Republic of China" },
{ 950, 950, "Chinese_Taiwan" },
{ 1250, 852, "Czech_Czech Republic" },
{ 1252, 850, "Danish_Denmark" },
{ 1252, 850, "Dutch_Netherlands" },
{ 1252, 850, "Dutch_Belgium" },
{ 1252, 437, "English_United States" },
{ 1252, 850, "English_Australia" },
{ 1252, 850, "English_Canada" },
{ 1252, 850, "English_New Zealand" },
{ 1252, 850, "English_United Kingdom" },
{ 1252, 437, "English_United States" },
{ 1252, 850, "Finnish_Finland" },
{ 1252, 850, "French_France" },
{ 1252, 850, "French_Belgium" },
{ 1252, 850, "French_Canada" },
{ 1252, 850, "French_Switzerland" },
{ 1252, 850, "German_Germany" },
{ 1252, 850, "German_Austria" },
{ 1252, 850, "German_Switzerland" },
{ 1253, 737, "Greek_Greece" },
{ 1250, 852, "Hungarian_Hungary" },
{ 1252, 850, "Icelandic_Iceland" },
{ 1252, 850, "Italian_Italy" },
{ 1252, 850, "Italian_Switzerland" },
{ 932, 932, "Japanese_Japan" },
{ 949, 949, "Korean_Korea" },
{ 1252, 850, "Norwegian (BokmOl)_Norway" },
{ 1252, 850, "Norwegian (BokmOl)_Norway" },
{ 1252, 850, "Norwegian-Nynorsk_Norway" },
{ 1250, 852, "Polish_Poland" },
{ 1252, 850, "Portuguese_Portugal" },
{ 1252, 850, "Portuguese_Brazil" },
{ 1251, 866, "Russian_Russia" },
{ 1250, 852, "Slovak_Slovakia" },
{ 1252, 850, "Spanish_Spain" },
{ 1252, 850, "Spanish_Mexico" },
{ 1252, 850, "Spanish_Spain" },
{ 1252, 850, "Swedish_Sweden" },
{ 1254, 857, "Turkish_Turkey" },
{ 0, 0, NULL}
};
/*
* Return OEM Code Page of current locale set by setlocale().
*/
static unsigned
get_current_oemcp(void)
{
int i;
char *locale, *p;
size_t len;
locale = setlocale(LC_CTYPE, NULL);
if (locale == NULL)
return (GetOEMCP());
if (locale[0] == 'C' && locale[1] == '\0')
return (CP_C_LOCALE);
p = strrchr(locale, '.');
if (p == NULL)
return (GetOEMCP());
len = p - locale;
for (i = 0; acp_ocp_map[i].acp; i++) {
if (strncmp(acp_ocp_map[i].locale, locale, len) == 0)
return (acp_ocp_map[i].ocp);
}
return (GetOEMCP());
}
#else
/*
* POSIX platform does not use CodePage.
*/
static unsigned
get_current_codepage(void)
{
return (-1);/* Unknown */
}
static unsigned
make_codepage_from_charset(const char *charset)
{
(void)charset; /* UNUSED */
return (-1);/* Unknown */
}
static unsigned
get_current_oemcp(void)
{
return (-1);/* Unknown */
}
#endif /* defined(_WIN32) && !defined(__CYGWIN__) */
/*
* Return a string conversion object.
*/
static struct archive_string_conv *
get_sconv_object(struct archive *a, const char *fc, const char *tc, int flag)
{
struct archive_string_conv *sc;
unsigned current_codepage;
/* Check if we have made the sconv object. */
sc = find_sconv_object(a, fc, tc);
if (sc != NULL)
return (sc);
if (a == NULL)
current_codepage = get_current_codepage();
else
current_codepage = a->current_codepage;
sc = create_sconv_object(canonical_charset_name(fc),
canonical_charset_name(tc), current_codepage, flag);
if (sc == NULL) {
if (a != NULL)
archive_set_error(a, ENOMEM,
"Could not allocate memory for "
"a string conversion object");
return (NULL);
}
/*
* If there is no converter for current string conversion object,
* we cannot handle this conversion.
*/
if (sc->nconverter == 0) {
if (a != NULL) {
#if HAVE_ICONV
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"iconv_open failed : Cannot handle ``%s''",
(flag & SCONV_TO_CHARSET)?tc:fc);
#else
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"A character-set conversion not fully supported "
"on this platform");
#endif
}
/* Failed; free a sconv object. */
free_sconv_object(sc);
return (NULL);
}
/*
* Success!
*/
if (a != NULL)
add_sconv_object(a, sc);
return (sc);
}
static const char *
get_current_charset(struct archive *a)
{
const char *cur_charset;
if (a == NULL)
cur_charset = default_iconv_charset("");
else {
cur_charset = default_iconv_charset(a->current_code);
if (a->current_code == NULL) {
a->current_code = strdup(cur_charset);
a->current_codepage = get_current_codepage();
a->current_oemcp = get_current_oemcp();
}
}
return (cur_charset);
}
/*
* Make and Return a string conversion object.
* Return NULL if the platform does not support the specified conversion
* and best_effort is 0.
* If best_effort is set, A string conversion object must be returned
* unless memory allocation for the object fails, but the conversion
* might fail when non-ASCII code is found.
*/
struct archive_string_conv *
archive_string_conversion_to_charset(struct archive *a, const char *charset,
int best_effort)
{
int flag = SCONV_TO_CHARSET;
if (best_effort)
flag |= SCONV_BEST_EFFORT;
return (get_sconv_object(a, get_current_charset(a), charset, flag));
}
struct archive_string_conv *
archive_string_conversion_from_charset(struct archive *a, const char *charset,
int best_effort)
{
int flag = SCONV_FROM_CHARSET;
if (best_effort)
flag |= SCONV_BEST_EFFORT;
return (get_sconv_object(a, charset, get_current_charset(a), flag));
}
/*
* archive_string_default_conversion_*_archive() are provided for Windows
* platform because other archiver application use CP_OEMCP for
* MultiByteToWideChar() and WideCharToMultiByte() for the filenames
* in tar or zip files. But mbstowcs/wcstombs(CRT) usually use CP_ACP
* unless you use setlocale(LC_ALL, ".OCP")(specify CP_OEMCP).
* So we should make a string conversion between CP_ACP and CP_OEMCP
* for compatibility.
*/
#if defined(_WIN32) && !defined(__CYGWIN__)
struct archive_string_conv *
archive_string_default_conversion_for_read(struct archive *a)
{
const char *cur_charset = get_current_charset(a);
char oemcp[16];
/* NOTE: a check of cur_charset is unneeded but we need
* that get_current_charset() has been surely called at
* this time whatever C compiler optimized. */
if (cur_charset != NULL &&
(a->current_codepage == CP_C_LOCALE ||
a->current_codepage == a->current_oemcp))
return (NULL);/* no conversion. */
_snprintf(oemcp, sizeof(oemcp)-1, "CP%d", a->current_oemcp);
/* Make sure a null termination must be set. */
oemcp[sizeof(oemcp)-1] = '\0';
return (get_sconv_object(a, oemcp, cur_charset,
SCONV_FROM_CHARSET));
}
struct archive_string_conv *
archive_string_default_conversion_for_write(struct archive *a)
{
const char *cur_charset = get_current_charset(a);
char oemcp[16];
/* NOTE: a check of cur_charset is unneeded but we need
* that get_current_charset() has been surely called at
* this time whatever C compiler optimized. */
if (cur_charset != NULL &&
(a->current_codepage == CP_C_LOCALE ||
a->current_codepage == a->current_oemcp))
return (NULL);/* no conversion. */
_snprintf(oemcp, sizeof(oemcp)-1, "CP%d", a->current_oemcp);
/* Make sure a null termination must be set. */
oemcp[sizeof(oemcp)-1] = '\0';
return (get_sconv_object(a, cur_charset, oemcp,
SCONV_TO_CHARSET));
}
#else
struct archive_string_conv *
archive_string_default_conversion_for_read(struct archive *a)
{
(void)a; /* UNUSED */
return (NULL);
}
struct archive_string_conv *
archive_string_default_conversion_for_write(struct archive *a)
{
(void)a; /* UNUSED */
return (NULL);
}
#endif
/*
* Dispose of all character conversion objects in the archive object.
*/
void
archive_string_conversion_free(struct archive *a)
{
struct archive_string_conv *sc;
struct archive_string_conv *sc_next;
for (sc = a->sconv; sc != NULL; sc = sc_next) {
sc_next = sc->next;
free_sconv_object(sc);
}
a->sconv = NULL;
free(a->current_code);
a->current_code = NULL;
}
/*
* Return a conversion charset name.
*/
const char *
archive_string_conversion_charset_name(struct archive_string_conv *sc)
{
if (sc->flag & SCONV_TO_CHARSET)
return (sc->to_charset);
else
return (sc->from_charset);
}
/*
* Change the behavior of a string conversion.
*/
void
archive_string_conversion_set_opt(struct archive_string_conv *sc, int opt)
{
switch (opt) {
/*
* A filename in UTF-8 was made with libarchive 2.x in a wrong
* assumption that wchar_t was Unicode.
* This option enables simulating the assumption in order to read
* that filename correctly.
*/
case SCONV_SET_OPT_UTF8_LIBARCHIVE2X:
#if (defined(_WIN32) && !defined(__CYGWIN__)) \
|| defined(__STDC_ISO_10646__) || defined(__APPLE__)
/*
* Nothing to do for it since wchar_t on these platforms
* is really Unicode.
*/
(void)sc; /* UNUSED */
#else
if ((sc->flag & SCONV_UTF8_LIBARCHIVE_2) == 0) {
sc->flag |= SCONV_UTF8_LIBARCHIVE_2;
/* Set up string converters. */
setup_converter(sc);
}
#endif
break;
case SCONV_SET_OPT_NORMALIZATION_C:
if ((sc->flag & SCONV_NORMALIZATION_C) == 0) {
sc->flag |= SCONV_NORMALIZATION_C;
sc->flag &= ~SCONV_NORMALIZATION_D;
/* Set up string converters. */
setup_converter(sc);
}
break;
case SCONV_SET_OPT_NORMALIZATION_D:
#if defined(HAVE_ICONV)
/*
* If iconv will take the string, do not change the
* setting of the normalization.
*/
if (!(sc->flag & SCONV_WIN_CP) &&
(sc->flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) &&
!(sc->flag & (SCONV_TO_UTF16 | SCONV_TO_UTF8)))
break;
#endif
if ((sc->flag & SCONV_NORMALIZATION_D) == 0) {
sc->flag |= SCONV_NORMALIZATION_D;
sc->flag &= ~SCONV_NORMALIZATION_C;
/* Set up string converters. */
setup_converter(sc);
}
break;
default:
break;
}
}
/*
*
* Copy one archive_string to another in locale conversion.
*
* archive_strncat_l();
* archive_strncpy_l();
*
*/
static size_t
mbsnbytes(const void *_p, size_t n)
{
size_t s;
const char *p, *pp;
if (_p == NULL)
return (0);
p = (const char *)_p;
/* Like strlen(p), except won't examine positions beyond p[n]. */
s = 0;
pp = p;
while (s < n && *pp) {
pp++;
s++;
}
return (s);
}
static size_t
utf16nbytes(const void *_p, size_t n)
{
size_t s;
const char *p, *pp;
if (_p == NULL)
return (0);
p = (const char *)_p;
/* Like strlen(p), except won't examine positions beyond p[n]. */
s = 0;
pp = p;
n >>= 1;
while (s < n && (pp[0] || pp[1])) {
pp += 2;
s++;
}
return (s<<1);
}
int
archive_strncpy_l(struct archive_string *as, const void *_p, size_t n,
struct archive_string_conv *sc)
{
as->length = 0;
return (archive_strncat_l(as, _p, n, sc));
}
int
archive_strncat_l(struct archive_string *as, const void *_p, size_t n,
struct archive_string_conv *sc)
{
const void *s;
size_t length = 0;
int i, r = 0, r2;
if (_p != NULL && n > 0) {
if (sc != NULL && (sc->flag & SCONV_FROM_UTF16))
length = utf16nbytes(_p, n);
else
length = mbsnbytes(_p, n);
}
/* We must allocate memory even if there is no data for conversion
* or copy. This simulates archive_string_append behavior. */
if (length == 0) {
int tn = 1;
if (sc != NULL && (sc->flag & SCONV_TO_UTF16))
tn = 2;
if (archive_string_ensure(as, as->length + tn) == NULL)
return (-1);
as->s[as->length] = 0;
if (tn == 2)
as->s[as->length+1] = 0;
return (0);
}
/*
* If sc is NULL, we just make a copy.
*/
if (sc == NULL) {
if (archive_string_append(as, _p, length) == NULL)
return (-1);/* No memory */
return (0);
}
s = _p;
i = 0;
if (sc->nconverter > 1) {
sc->utftmp.length = 0;
r2 = sc->converter[0](&(sc->utftmp), s, length, sc);
if (r2 != 0 && errno == ENOMEM)
return (r2);
if (r > r2)
r = r2;
s = sc->utftmp.s;
length = sc->utftmp.length;
++i;
}
r2 = sc->converter[i](as, s, length, sc);
if (r > r2)
r = r2;
return (r);
}
#if HAVE_ICONV
/*
* Return -1 if conversion fails.
*/
static int
iconv_strncat_in_locale(struct archive_string *as, const void *_p,
size_t length, struct archive_string_conv *sc)
{
ICONV_CONST char *itp;
size_t remaining;
iconv_t cd;
char *outp;
size_t avail, bs;
int return_value = 0; /* success */
int to_size, from_size;
if (sc->flag & SCONV_TO_UTF16)
to_size = 2;
else
to_size = 1;
if (sc->flag & SCONV_FROM_UTF16)
from_size = 2;
else
from_size = 1;
if (archive_string_ensure(as, as->length + length*2+to_size) == NULL)
return (-1);
cd = sc->cd;
itp = (char *)(uintptr_t)_p;
remaining = length;
outp = as->s + as->length;
avail = as->buffer_length - as->length - to_size;
while (remaining >= (size_t)from_size) {
size_t result = iconv(cd, &itp, &remaining, &outp, &avail);
if (result != (size_t)-1)
break; /* Conversion completed. */
if (errno == EILSEQ || errno == EINVAL) {
/*
* If an output charset is UTF-8 or UTF-16BE/LE,
* unknown character should be U+FFFD
* (replacement character).
*/
if (sc->flag & (SCONV_TO_UTF8 | SCONV_TO_UTF16)) {
size_t rbytes;
if (sc->flag & SCONV_TO_UTF8)
rbytes = sizeof(utf8_replacement_char);
else
rbytes = 2;
if (avail < rbytes) {
as->length = outp - as->s;
bs = as->buffer_length +
(remaining * to_size) + rbytes;
if (NULL ==
archive_string_ensure(as, bs))
return (-1);
outp = as->s + as->length;
avail = as->buffer_length
- as->length - to_size;
}
if (sc->flag & SCONV_TO_UTF8)
memcpy(outp, utf8_replacement_char, sizeof(utf8_replacement_char));
else if (sc->flag & SCONV_TO_UTF16BE)
archive_be16enc(outp, UNICODE_R_CHAR);
else
archive_le16enc(outp, UNICODE_R_CHAR);
outp += rbytes;
avail -= rbytes;
} else {
/* Skip the illegal input bytes. */
*outp++ = '?';
avail--;
}
itp += from_size;
remaining -= from_size;
return_value = -1; /* failure */
} else {
/* E2BIG no output buffer,
* Increase an output buffer. */
as->length = outp - as->s;
bs = as->buffer_length + remaining * 2;
if (NULL == archive_string_ensure(as, bs))
return (-1);
outp = as->s + as->length;
avail = as->buffer_length - as->length - to_size;
}
}
as->length = outp - as->s;
as->s[as->length] = 0;
if (to_size == 2)
as->s[as->length+1] = 0;
return (return_value);
}
#endif /* HAVE_ICONV */
#if defined(_WIN32) && !defined(__CYGWIN__)
/*
* Translate a string from a some CodePage to an another CodePage by
* Windows APIs, and copy the result. Return -1 if conversion fails.
*/
static int
strncat_in_codepage(struct archive_string *as,
const void *_p, size_t length, struct archive_string_conv *sc)
{
const char *s = (const char *)_p;
struct archive_wstring aws;
size_t l;
int r, saved_flag;
archive_string_init(&aws);
saved_flag = sc->flag;
sc->flag &= ~(SCONV_NORMALIZATION_D | SCONV_NORMALIZATION_C);
r = archive_wstring_append_from_mbs_in_codepage(&aws, s, length, sc);
sc->flag = saved_flag;
if (r != 0) {
archive_wstring_free(&aws);
if (errno != ENOMEM)
archive_string_append(as, s, length);
return (-1);
}
l = as->length;
r = archive_string_append_from_wcs_in_codepage(
as, aws.s, aws.length, sc);
if (r != 0 && errno != ENOMEM && l == as->length)
archive_string_append(as, s, length);
archive_wstring_free(&aws);
return (r);
}
/*
* Test whether MBS ==> WCS is okay.
*/
static int
invalid_mbs(const void *_p, size_t n, struct archive_string_conv *sc)
{
const char *p = (const char *)_p;
unsigned codepage;
DWORD mbflag = MB_ERR_INVALID_CHARS;
if (sc->flag & SCONV_FROM_CHARSET)
codepage = sc->to_cp;
else
codepage = sc->from_cp;
if (codepage == CP_C_LOCALE)
return (0);
if (codepage != CP_UTF8)
mbflag |= MB_PRECOMPOSED;
if (MultiByteToWideChar(codepage, mbflag, p, (int)n, NULL, 0) == 0)
return (-1); /* Invalid */
return (0); /* Okay */
}
#else
/*
* Test whether MBS ==> WCS is okay.
*/
static int
invalid_mbs(const void *_p, size_t n, struct archive_string_conv *sc)
{
const char *p = (const char *)_p;
size_t r;
#if HAVE_MBRTOWC
mbstate_t shift_state;
memset(&shift_state, 0, sizeof(shift_state));
#else
/* Clear the shift state before starting. */
mbtowc(NULL, NULL, 0);
#endif
while (n) {
wchar_t wc;
#if HAVE_MBRTOWC
r = mbrtowc(&wc, p, n, &shift_state);
#else
r = mbtowc(&wc, p, n);
#endif
if (r == (size_t)-1 || r == (size_t)-2)
return (-1);/* Invalid. */
if (r == 0)
break;
p += r;
n -= r;
}
(void)sc; /* UNUSED */
return (0); /* All Okey. */
}
#endif /* defined(_WIN32) && !defined(__CYGWIN__) */
/*
* Basically returns -1 because we cannot make a conversion of charset
* without iconv but in some cases this would return 0.
* Returns 0 if all copied characters are ASCII.
* Returns 0 if both from-locale and to-locale are the same and those
* can be WCS with no error.
*/
static int
best_effort_strncat_in_locale(struct archive_string *as, const void *_p,
size_t length, struct archive_string_conv *sc)
{
size_t remaining;
const uint8_t *itp;
int return_value = 0; /* success */
/*
* If both from-locale and to-locale is the same, this makes a copy.
* And then this checks all copied MBS can be WCS if so returns 0.
*/
if (sc->same) {
if (archive_string_append(as, _p, length) == NULL)
return (-1);/* No memory */
return (invalid_mbs(_p, length, sc));
}
/*
* If a character is ASCII, this just copies it. If not, this
* assigns '?' character instead but in UTF-8 locale this assigns
* byte sequence 0xEF 0xBD 0xBD, which are code point U+FFFD,
* a Replacement Character in Unicode.
*/
remaining = length;
itp = (const uint8_t *)_p;
while (*itp && remaining > 0) {
if (*itp > 127) {
// Non-ASCII: Substitute with suitable replacement
if (sc->flag & SCONV_TO_UTF8) {
if (archive_string_append(as, utf8_replacement_char, sizeof(utf8_replacement_char)) == NULL) {
__archive_errx(1, "Out of memory");
}
} else {
archive_strappend_char(as, '?');
}
return_value = -1;
} else {
archive_strappend_char(as, *itp);
}
++itp;
}
return (return_value);
}
/*
* Unicode conversion functions.
* - UTF-8 <===> UTF-8 in removing surrogate pairs.
* - UTF-8 NFD ===> UTF-8 NFC in removing surrogate pairs.
* - UTF-8 made by libarchive 2.x ===> UTF-8.
* - UTF-16BE <===> UTF-8.
*
*/
/*
* Utility to convert a single UTF-8 sequence.
*
* Usually return used bytes, return used byte in negative value when
* a unicode character is replaced with U+FFFD.
* See also http://unicode.org/review/pr-121.html Public Review Issue #121
* Recommended Practice for Replacement Characters.
*/
static int
_utf8_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
static const char utf8_count[256] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 00 - 0F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 10 - 1F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 20 - 2F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 30 - 3F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 40 - 4F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 50 - 5F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 60 - 6F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 70 - 7F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 80 - 8F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 90 - 9F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* A0 - AF */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* B0 - BF */
0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* C0 - CF */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* D0 - DF */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,/* E0 - EF */
4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* F0 - FF */
};
int ch, i;
int cnt;
uint32_t wc;
/* Sanity check. */
if (n == 0)
return (0);
/*
* Decode 1-4 bytes depending on the value of the first byte.
*/
ch = (unsigned char)*s;
if (ch == 0)
return (0); /* Standard: return 0 for end-of-string. */
cnt = utf8_count[ch];
/* Invalid sequence or there are not plenty bytes. */
if ((int)n < cnt) {
cnt = (int)n;
for (i = 1; i < cnt; i++) {
if ((s[i] & 0xc0) != 0x80) {
cnt = i;
break;
}
}
goto invalid_sequence;
}
/* Make a Unicode code point from a single UTF-8 sequence. */
switch (cnt) {
case 1: /* 1 byte sequence. */
*pwc = ch & 0x7f;
return (cnt);
case 2: /* 2 bytes sequence. */
if ((s[1] & 0xc0) != 0x80) {
cnt = 1;
goto invalid_sequence;
}
*pwc = ((ch & 0x1f) << 6) | (s[1] & 0x3f);
return (cnt);
case 3: /* 3 bytes sequence. */
if ((s[1] & 0xc0) != 0x80) {
cnt = 1;
goto invalid_sequence;
}
if ((s[2] & 0xc0) != 0x80) {
cnt = 2;
goto invalid_sequence;
}
wc = ((ch & 0x0f) << 12)
| ((s[1] & 0x3f) << 6)
| (s[2] & 0x3f);
if (wc < 0x800)
goto invalid_sequence;/* Overlong sequence. */
break;
case 4: /* 4 bytes sequence. */
if ((s[1] & 0xc0) != 0x80) {
cnt = 1;
goto invalid_sequence;
}
if ((s[2] & 0xc0) != 0x80) {
cnt = 2;
goto invalid_sequence;
}
if ((s[3] & 0xc0) != 0x80) {
cnt = 3;
goto invalid_sequence;
}
wc = ((ch & 0x07) << 18)
| ((s[1] & 0x3f) << 12)
| ((s[2] & 0x3f) << 6)
| (s[3] & 0x3f);
if (wc < 0x10000)
goto invalid_sequence;/* Overlong sequence. */
break;
default: /* Others are all invalid sequence. */
if (ch == 0xc0 || ch == 0xc1)
cnt = 2;
else if (ch >= 0xf5 && ch <= 0xf7)
cnt = 4;
else if (ch >= 0xf8 && ch <= 0xfb)
cnt = 5;
else if (ch == 0xfc || ch == 0xfd)
cnt = 6;
else
cnt = 1;
if ((int)n < cnt)
cnt = (int)n;
for (i = 1; i < cnt; i++) {
if ((s[i] & 0xc0) != 0x80) {
cnt = i;
break;
}
}
goto invalid_sequence;
}
/* The code point larger than 0x10FFFF is not legal
* Unicode values. */
if (wc > UNICODE_MAX)
goto invalid_sequence;
/* Correctly gets a Unicode, returns used bytes. */
*pwc = wc;
return (cnt);
invalid_sequence:
*pwc = UNICODE_R_CHAR;/* set the Replacement Character instead. */
return (cnt * -1);
}
static int
utf8_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
int cnt;
cnt = _utf8_to_unicode(pwc, s, n);
/* Any of Surrogate pair is not legal Unicode values. */
if (cnt == 3 && IS_SURROGATE_PAIR_LA(*pwc))
return (-3);
return (cnt);
}
static inline uint32_t
combine_surrogate_pair(uint32_t uc, uint32_t uc2)
{
uc -= 0xD800;
uc *= 0x400;
uc += uc2 - 0xDC00;
uc += 0x10000;
return (uc);
}
/*
* Convert a single UTF-8/CESU-8 sequence to a Unicode code point in
* removing surrogate pairs.
*
* CESU-8: The Compatibility Encoding Scheme for UTF-16.
*
* Usually return used bytes, return used byte in negative value when
* a unicode character is replaced with U+FFFD.
*/
static int
cesu8_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
uint32_t wc = 0;
int cnt;
cnt = _utf8_to_unicode(&wc, s, n);
if (cnt == 3 && IS_HIGH_SURROGATE_LA(wc)) {
uint32_t wc2 = 0;
if (n - 3 < 3) {
/* Invalid byte sequence. */
goto invalid_sequence;
}
cnt = _utf8_to_unicode(&wc2, s+3, n-3);
if (cnt != 3 || !IS_LOW_SURROGATE_LA(wc2)) {
/* Invalid byte sequence. */
goto invalid_sequence;
}
wc = combine_surrogate_pair(wc, wc2);
cnt = 6;
} else if (cnt == 3 && IS_LOW_SURROGATE_LA(wc)) {
/* Invalid byte sequence. */
goto invalid_sequence;
}
*pwc = wc;
return (cnt);
invalid_sequence:
*pwc = UNICODE_R_CHAR;/* set the Replacement Character instead. */
if (cnt > 0)
cnt *= -1;
return (cnt);
}
/*
* Convert a Unicode code point to a single UTF-8 sequence.
*
* NOTE:This function does not check if the Unicode is legal or not.
* Please you definitely check it before calling this.
*/
static size_t
unicode_to_utf8(char *p, size_t remaining, uint32_t uc)
{
char *_p = p;
/* Invalid Unicode char maps to Replacement character */
if (uc > UNICODE_MAX)
uc = UNICODE_R_CHAR;
/* Translate code point to UTF8 */
if (uc <= 0x7f) {
if (remaining == 0)
return (0);
*p++ = (char)uc;
} else if (uc <= 0x7ff) {
if (remaining < 2)
return (0);
*p++ = 0xc0 | ((uc >> 6) & 0x1f);
*p++ = 0x80 | (uc & 0x3f);
} else if (uc <= 0xffff) {
if (remaining < 3)
return (0);
*p++ = 0xe0 | ((uc >> 12) & 0x0f);
*p++ = 0x80 | ((uc >> 6) & 0x3f);
*p++ = 0x80 | (uc & 0x3f);
} else {
if (remaining < 4)
return (0);
*p++ = 0xf0 | ((uc >> 18) & 0x07);
*p++ = 0x80 | ((uc >> 12) & 0x3f);
*p++ = 0x80 | ((uc >> 6) & 0x3f);
*p++ = 0x80 | (uc & 0x3f);
}
return (p - _p);
}
static int
utf16be_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
return (utf16_to_unicode(pwc, s, n, 1));
}
static int
utf16le_to_unicode(uint32_t *pwc, const char *s, size_t n)
{
return (utf16_to_unicode(pwc, s, n, 0));
}
static int
utf16_to_unicode(uint32_t *pwc, const char *s, size_t n, int be)
{
const char *utf16 = s;
unsigned uc;
if (n == 0)
return (0);
if (n == 1) {
/* set the Replacement Character instead. */
*pwc = UNICODE_R_CHAR;
return (-1);
}
if (be)
uc = archive_be16dec(utf16);
else
uc = archive_le16dec(utf16);
utf16 += 2;
/* If this is a surrogate pair, assemble the full code point.*/
if (IS_HIGH_SURROGATE_LA(uc)) {
unsigned uc2;
if (n >= 4) {
if (be)
uc2 = archive_be16dec(utf16);
else
uc2 = archive_le16dec(utf16);
} else
uc2 = 0;
if (IS_LOW_SURROGATE_LA(uc2)) {
uc = combine_surrogate_pair(uc, uc2);
utf16 += 2;
} else {
/* Undescribed code point should be U+FFFD
* (replacement character). */
*pwc = UNICODE_R_CHAR;
return (-2);
}
}
/*
* Surrogate pair values(0xd800 through 0xdfff) are only
* used by UTF-16, so, after above calculation, the code
* must not be surrogate values, and Unicode has no codes
* larger than 0x10ffff. Thus, those are not legal Unicode
* values.
*/
if (IS_SURROGATE_PAIR_LA(uc) || uc > UNICODE_MAX) {
/* Undescribed code point should be U+FFFD
* (replacement character). */
*pwc = UNICODE_R_CHAR;
return (((int)(utf16 - s)) * -1);
}
*pwc = uc;
return ((int)(utf16 - s));
}
static size_t
unicode_to_utf16be(char *p, size_t remaining, uint32_t uc)
{
char *utf16 = p;
if (uc > 0xffff) {
/* We have a code point that won't fit into a
* wchar_t; convert it to a surrogate pair. */
if (remaining < 4)
return (0);
uc -= 0x10000;
archive_be16enc(utf16, ((uc >> 10) & 0x3ff) + 0xD800);
archive_be16enc(utf16+2, (uc & 0x3ff) + 0xDC00);
return (4);
} else {
if (remaining < 2)
return (0);
archive_be16enc(utf16, uc);
return (2);
}
}
static size_t
unicode_to_utf16le(char *p, size_t remaining, uint32_t uc)
{
char *utf16 = p;
if (uc > 0xffff) {
/* We have a code point that won't fit into a
* wchar_t; convert it to a surrogate pair. */
if (remaining < 4)
return (0);
uc -= 0x10000;
archive_le16enc(utf16, ((uc >> 10) & 0x3ff) + 0xD800);
archive_le16enc(utf16+2, (uc & 0x3ff) + 0xDC00);
return (4);
} else {
if (remaining < 2)
return (0);
archive_le16enc(utf16, uc);
return (2);
}
}
/*
* Copy UTF-8 string in checking surrogate pair.
* If any surrogate pair are found, it would be canonicalized.
*/
static int
strncat_from_utf8_to_utf8(struct archive_string *as, const void *_p,
size_t len, struct archive_string_conv *sc)
{
const char *s;
char *p, *endp;
int n, ret = 0;
(void)sc; /* UNUSED */
if (archive_string_ensure(as, as->length + len + 1) == NULL)
return (-1);
s = (const char *)_p;
p = as->s + as->length;
endp = as->s + as->buffer_length -1;
do {
uint32_t uc;
const char *ss = s;
size_t w;
/*
* Forward byte sequence until a conversion of that is needed.
*/
while ((n = utf8_to_unicode(&uc, s, len)) > 0) {
s += n;
len -= n;
}
if (ss < s) {
if (p + (s - ss) > endp) {
as->length = p - as->s;
if (archive_string_ensure(as,
as->buffer_length + len + 1) == NULL)
return (-1);
p = as->s + as->length;
endp = as->s + as->buffer_length -1;
}
memcpy(p, ss, s - ss);
p += s - ss;
}
/*
* If n is negative, current byte sequence needs a replacement.
*/
if (n < 0) {
if (n == -3 && IS_SURROGATE_PAIR_LA(uc)) {
/* Current byte sequence may be CESU-8. */
n = cesu8_to_unicode(&uc, s, len);
}
if (n < 0) {
ret = -1;
n *= -1;/* Use a replaced unicode character. */
}
/* Rebuild UTF-8 byte sequence. */
while ((w = unicode_to_utf8(p, endp - p, uc)) == 0) {
as->length = p - as->s;
if (archive_string_ensure(as,
as->buffer_length + len + 1) == NULL)
return (-1);
p = as->s + as->length;
endp = as->s + as->buffer_length -1;
}
p += w;
s += n;
len -= n;
}
} while (n > 0);
as->length = p - as->s;
as->s[as->length] = '\0';
return (ret);
}
static int
archive_string_append_unicode(struct archive_string *as, const void *_p,
size_t len, struct archive_string_conv *sc)
{
const char *s;
char *p, *endp;
uint32_t uc;
size_t w;
int n, ret = 0, ts, tm;
int (*parse)(uint32_t *, const char *, size_t);
size_t (*unparse)(char *, size_t, uint32_t);
if (sc->flag & SCONV_TO_UTF16BE) {
unparse = unicode_to_utf16be;
ts = 2;
} else if (sc->flag & SCONV_TO_UTF16LE) {
unparse = unicode_to_utf16le;
ts = 2;
} else if (sc->flag & SCONV_TO_UTF8) {
unparse = unicode_to_utf8;
ts = 1;
} else {
/*
* This case is going to be converted to another
* character-set through iconv.
*/
if (sc->flag & SCONV_FROM_UTF16BE) {
unparse = unicode_to_utf16be;
ts = 2;
} else if (sc->flag & SCONV_FROM_UTF16LE) {
unparse = unicode_to_utf16le;
ts = 2;
} else {
unparse = unicode_to_utf8;
ts = 1;
}
}
if (sc->flag & SCONV_FROM_UTF16BE) {
parse = utf16be_to_unicode;
tm = 1;
} else if (sc->flag & SCONV_FROM_UTF16LE) {
parse = utf16le_to_unicode;
tm = 1;
} else {
parse = cesu8_to_unicode;
tm = ts;
}
if (archive_string_ensure(as, as->length + len * tm + ts) == NULL)
return (-1);
s = (const char *)_p;
p = as->s + as->length;
endp = as->s + as->buffer_length - ts;
while ((n = parse(&uc, s, len)) != 0) {
if (n < 0) {
/* Use a replaced unicode character. */
n *= -1;
ret = -1;
}
s += n;
len -= n;
while ((w = unparse(p, endp - p, uc)) == 0) {
/* There is not enough output buffer so
* we have to expand it. */
as->length = p - as->s;
if (archive_string_ensure(as,
as->buffer_length + len * tm + ts) == NULL)
return (-1);
p = as->s + as->length;
endp = as->s + as->buffer_length - ts;
}
p += w;
}
as->length = p - as->s;
as->s[as->length] = '\0';
if (ts == 2)
as->s[as->length+1] = '\0';
return (ret);
}
/*
* Following Constants for Hangul compositions this information comes from
* Unicode Standard Annex #15 http://unicode.org/reports/tr15/
*/
#define HC_SBASE 0xAC00
#define HC_LBASE 0x1100
#define HC_VBASE 0x1161
#define HC_TBASE 0x11A7
#define HC_LCOUNT 19
#define HC_VCOUNT 21
#define HC_TCOUNT 28
#define HC_NCOUNT (HC_VCOUNT * HC_TCOUNT)
#define HC_SCOUNT (HC_LCOUNT * HC_NCOUNT)
static uint32_t
get_nfc(uint32_t uc, uint32_t uc2)
{
int t, b;
t = 0;
b = sizeof(u_composition_table)/sizeof(u_composition_table[0]) -1;
while (b >= t) {
int m = (t + b) / 2;
if (u_composition_table[m].cp1 < uc)
t = m + 1;
else if (u_composition_table[m].cp1 > uc)
b = m - 1;
else if (u_composition_table[m].cp2 < uc2)
t = m + 1;
else if (u_composition_table[m].cp2 > uc2)
b = m - 1;
else
return (u_composition_table[m].nfc);
}
return (0);
}
#define FDC_MAX 10 /* The maximum number of Following Decomposable
* Characters. */
/*
* Update first code point.
*/
#define UPDATE_UC(new_uc) do { \
uc = new_uc; \
ucptr = NULL; \
} while (0)
/*
* Replace first code point with second code point.
*/
#define REPLACE_UC_WITH_UC2() do { \
uc = uc2; \
ucptr = uc2ptr; \
n = n2; \
} while (0)
#define EXPAND_BUFFER() do { \
as->length = p - as->s; \
if (archive_string_ensure(as, \
as->buffer_length + len * tm + ts) == NULL)\
return (-1); \
p = as->s + as->length; \
endp = as->s + as->buffer_length - ts; \
} while (0)
#define UNPARSE(p, endp, uc) do { \
while ((w = unparse(p, (endp) - (p), uc)) == 0) {\
EXPAND_BUFFER(); \
} \
p += w; \
} while (0)
/*
* Write first code point.
* If the code point has not be changed from its original code,
* this just copies it from its original buffer pointer.
* If not, this converts it to UTF-8 byte sequence and copies it.
*/
#define WRITE_UC() do { \
if (ucptr) { \
if (p + n > endp) \
EXPAND_BUFFER(); \
switch (n) { \
case 4: \
*p++ = *ucptr++; \
/* FALL THROUGH */ \
case 3: \
*p++ = *ucptr++; \
/* FALL THROUGH */ \
case 2: \
*p++ = *ucptr++; \
/* FALL THROUGH */ \
case 1: \
*p++ = *ucptr; \
break; \
} \
ucptr = NULL; \
} else { \
UNPARSE(p, endp, uc); \
} \
} while (0)
/*
* Collect following decomposable code points.
*/
#define COLLECT_CPS(start) do { \
int _i; \
for (_i = start; _i < FDC_MAX ; _i++) { \
nx = parse(&ucx[_i], s, len); \
if (nx <= 0) \
break; \
cx = CCC(ucx[_i]); \
if (cl >= cx && cl != 228 && cx != 228)\
break; \
s += nx; \
len -= nx; \
cl = cx; \