1 /*- 2 * Copyright (c) 2003-2011 Tim Kientzle 3 * Copyright (c) 2011-2012 Michihiro NAKAJIMA 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "archive_platform.h" 28 __FBSDID("$FreeBSD: head/lib/libarchive/archive_string.c 201095 2009-12-28 02:33:22Z kientzle $"); 29 30 /* 31 * Basic resizable string support, to simplify manipulating arbitrary-sized 32 * strings while minimizing heap activity. 33 * 34 * In particular, the buffer used by a string object is only grown, it 35 * never shrinks, so you can clear and reuse the same string object 36 * without incurring additional memory allocations. 37 */ 38 39 #ifdef HAVE_ERRNO_H 40 #include <errno.h> 41 #endif 42 #ifdef HAVE_ICONV_H 43 #include <iconv.h> 44 #endif 45 #ifdef HAVE_LANGINFO_H 46 #include <langinfo.h> 47 #endif 48 #ifdef HAVE_LOCALCHARSET_H 49 #include <localcharset.h> 50 #endif 51 #ifdef HAVE_STDLIB_H 52 #include <stdlib.h> 53 #endif 54 #ifdef HAVE_STRING_H 55 #include <string.h> 56 #endif 57 #ifdef HAVE_WCHAR_H 58 #include <wchar.h> 59 #endif 60 #if defined(_WIN32) && !defined(__CYGWIN__) 61 #include <windows.h> 62 #include <locale.h> 63 #endif 64 65 #include "archive_endian.h" 66 #include "archive_private.h" 67 #include "archive_string.h" 68 #include "archive_string_composition.h" 69 70 #if !defined(HAVE_WMEMCPY) && !defined(wmemcpy) 71 #define wmemcpy(a,b,i) (wchar_t *)memcpy((a), (b), (i) * sizeof(wchar_t)) 72 #endif 73 74 #if !defined(HAVE_WMEMMOVE) && !defined(wmemmove) 75 #define wmemmove(a,b,i) (wchar_t *)memmove((a), (b), (i) * sizeof(wchar_t)) 76 #endif 77 78 #undef max 79 #define max(a, b) ((a)>(b)?(a):(b)) 80 81 struct archive_string_conv { 82 struct archive_string_conv *next; 83 char *from_charset; 84 char *to_charset; 85 unsigned from_cp; 86 unsigned to_cp; 87 /* Set 1 if from_charset and to_charset are the same. */ 88 int same; 89 int flag; 90 #define SCONV_TO_CHARSET 1 /* MBS is being converted to specified 91 * charset. */ 92 #define SCONV_FROM_CHARSET (1<<1) /* MBS is being converted from 93 * specified charset. */ 94 #define SCONV_BEST_EFFORT (1<<2) /* Copy at least ASCII code. */ 95 #define SCONV_WIN_CP (1<<3) /* Use Windows API for converting 96 * MBS. */ 97 #define SCONV_UTF8_LIBARCHIVE_2 (1<<4) /* Incorrect UTF-8 made by libarchive 98 * 2.x in the wrong assumption. */ 99 #define SCONV_NORMALIZATION_C (1<<6) /* Need normalization to be Form C. 100 * Before UTF-8 characters are actually 101 * processed. */ 102 #define SCONV_NORMALIZATION_D (1<<7) /* Need normalization to be Form D. 103 * Before UTF-8 characters are actually 104 * processed. 105 * Currently this only for MAC OS X. */ 106 #define SCONV_TO_UTF8 (1<<8) /* "to charset" side is UTF-8. */ 107 #define SCONV_FROM_UTF8 (1<<9) /* "from charset" side is UTF-8. */ 108 #define SCONV_TO_UTF16BE (1<<10) /* "to charset" side is UTF-16BE. */ 109 #define SCONV_FROM_UTF16BE (1<<11) /* "from charset" side is UTF-16BE. */ 110 #define SCONV_TO_UTF16LE (1<<12) /* "to charset" side is UTF-16LE. */ 111 #define SCONV_FROM_UTF16LE (1<<13) /* "from charset" side is UTF-16LE. */ 112 #define SCONV_TO_UTF16 (SCONV_TO_UTF16BE | SCONV_TO_UTF16LE) 113 #define SCONV_FROM_UTF16 (SCONV_FROM_UTF16BE | SCONV_FROM_UTF16LE) 114 115 #if HAVE_ICONV 116 iconv_t cd; 117 iconv_t cd_w;/* Use at archive_mstring on 118 * Windows. */ 119 #endif 120 /* A temporary buffer for normalization. */ 121 struct archive_string utftmp; 122 int (*converter[2])(struct archive_string *, const void *, size_t, 123 struct archive_string_conv *); 124 int nconverter; 125 }; 126 127 #define CP_C_LOCALE 0 /* "C" locale only for this file. */ 128 #define CP_UTF16LE 1200 129 #define CP_UTF16BE 1201 130 131 #define IS_HIGH_SURROGATE_LA(uc) ((uc) >= 0xD800 && (uc) <= 0xDBFF) 132 #define IS_LOW_SURROGATE_LA(uc) ((uc) >= 0xDC00 && (uc) <= 0xDFFF) 133 #define IS_SURROGATE_PAIR_LA(uc) ((uc) >= 0xD800 && (uc) <= 0xDFFF) 134 #define UNICODE_MAX 0x10FFFF 135 #define UNICODE_R_CHAR 0xFFFD /* Replacement character. */ 136 /* Set U+FFFD(Replacement character) in UTF-8. */ 137 static const char utf8_replacement_char[] = {0xef, 0xbf, 0xbd}; 138 139 static struct archive_string_conv *find_sconv_object(struct archive *, 140 const char *, const char *); 141 static void add_sconv_object(struct archive *, struct archive_string_conv *); 142 static struct archive_string_conv *create_sconv_object(const char *, 143 const char *, unsigned, int); 144 static void free_sconv_object(struct archive_string_conv *); 145 static struct archive_string_conv *get_sconv_object(struct archive *, 146 const char *, const char *, int); 147 static unsigned make_codepage_from_charset(const char *); 148 static unsigned get_current_codepage(void); 149 static unsigned get_current_oemcp(void); 150 static size_t mbsnbytes(const void *, size_t); 151 static size_t utf16nbytes(const void *, size_t); 152 #if defined(_WIN32) && !defined(__CYGWIN__) 153 static int archive_wstring_append_from_mbs_in_codepage( 154 struct archive_wstring *, const char *, size_t, 155 struct archive_string_conv *); 156 static int archive_string_append_from_wcs_in_codepage(struct archive_string *, 157 const wchar_t *, size_t, struct archive_string_conv *); 158 static int is_big_endian(void); 159 static int strncat_in_codepage(struct archive_string *, const void *, 160 size_t, struct archive_string_conv *); 161 static int win_strncat_from_utf16be(struct archive_string *, const void *, 162 size_t, struct archive_string_conv *); 163 static int win_strncat_from_utf16le(struct archive_string *, const void *, 164 size_t, struct archive_string_conv *); 165 static int win_strncat_to_utf16be(struct archive_string *, const void *, 166 size_t, struct archive_string_conv *); 167 static int win_strncat_to_utf16le(struct archive_string *, const void *, 168 size_t, struct archive_string_conv *); 169 #endif 170 static int best_effort_strncat_from_utf16be(struct archive_string *, 171 const void *, size_t, struct archive_string_conv *); 172 static int best_effort_strncat_from_utf16le(struct archive_string *, 173 const void *, size_t, struct archive_string_conv *); 174 static int best_effort_strncat_to_utf16be(struct archive_string *, 175 const void *, size_t, struct archive_string_conv *); 176 static int best_effort_strncat_to_utf16le(struct archive_string *, 177 const void *, size_t, struct archive_string_conv *); 178 #if defined(HAVE_ICONV) 179 static int iconv_strncat_in_locale(struct archive_string *, const void *, 180 size_t, struct archive_string_conv *); 181 #endif 182 static int best_effort_strncat_in_locale(struct archive_string *, 183 const void *, size_t, struct archive_string_conv *); 184 static int _utf8_to_unicode(uint32_t *, const char *, size_t); 185 static int utf8_to_unicode(uint32_t *, const char *, size_t); 186 static inline uint32_t combine_surrogate_pair(uint32_t, uint32_t); 187 static int cesu8_to_unicode(uint32_t *, const char *, size_t); 188 static size_t unicode_to_utf8(char *, size_t, uint32_t); 189 static int utf16_to_unicode(uint32_t *, const char *, size_t, int); 190 static size_t unicode_to_utf16be(char *, size_t, uint32_t); 191 static size_t unicode_to_utf16le(char *, size_t, uint32_t); 192 static int strncat_from_utf8_libarchive2(struct archive_string *, 193 const void *, size_t, struct archive_string_conv *); 194 static int strncat_from_utf8_to_utf8(struct archive_string *, const void *, 195 size_t, struct archive_string_conv *); 196 static int archive_string_normalize_C(struct archive_string *, const void *, 197 size_t, struct archive_string_conv *); 198 static int archive_string_normalize_D(struct archive_string *, const void *, 199 size_t, struct archive_string_conv *); 200 static int archive_string_append_unicode(struct archive_string *, 201 const void *, size_t, struct archive_string_conv *); 202 203 static struct archive_string * 204 archive_string_append(struct archive_string *as, const char *p, size_t s) 205 { 206 if (archive_string_ensure(as, as->length + s + 1) == NULL) 207 return (NULL); 208 if (s) 209 memmove(as->s + as->length, p, s); 210 as->length += s; 211 as->s[as->length] = 0; 212 return (as); 213 } 214 215 static struct archive_wstring * 216 archive_wstring_append(struct archive_wstring *as, const wchar_t *p, size_t s) 217 { 218 if (archive_wstring_ensure(as, as->length + s + 1) == NULL) 219 return (NULL); 220 if (s) 221 wmemmove(as->s + as->length, p, s); 222 as->length += s; 223 as->s[as->length] = 0; 224 return (as); 225 } 226 227 struct archive_string * 228 archive_array_append(struct archive_string *as, const char *p, size_t s) 229 { 230 return archive_string_append(as, p, s); 231 } 232 233 void 234 archive_string_concat(struct archive_string *dest, struct archive_string *src) 235 { 236 if (archive_string_append(dest, src->s, src->length) == NULL) 237 __archive_errx(1, "Out of memory"); 238 } 239 240 void 241 archive_wstring_concat(struct archive_wstring *dest, 242 struct archive_wstring *src) 243 { 244 if (archive_wstring_append(dest, src->s, src->length) == NULL) 245 __archive_errx(1, "Out of memory"); 246 } 247 248 void 249 archive_string_free(struct archive_string *as) 250 { 251 as->length = 0; 252 as->buffer_length = 0; 253 free(as->s); 254 as->s = NULL; 255 } 256 257 void 258 archive_wstring_free(struct archive_wstring *as) 259 { 260 as->length = 0; 261 as->buffer_length = 0; 262 free(as->s); 263 as->s = NULL; 264 } 265 266 struct archive_wstring * 267 archive_wstring_ensure(struct archive_wstring *as, size_t s) 268 { 269 return (struct archive_wstring *) 270 archive_string_ensure((struct archive_string *)as, 271 s * sizeof(wchar_t)); 272 } 273 274 /* Returns NULL on any allocation failure. */ 275 struct archive_string * 276 archive_string_ensure(struct archive_string *as, size_t s) 277 { 278 char *p; 279 size_t new_length; 280 281 /* If buffer is already big enough, don't reallocate. */ 282 if (as->s && (s <= as->buffer_length)) 283 return (as); 284 285 /* 286 * Growing the buffer at least exponentially ensures that 287 * append operations are always linear in the number of 288 * characters appended. Using a smaller growth rate for 289 * larger buffers reduces memory waste somewhat at the cost of 290 * a larger constant factor. 291 */ 292 if (as->buffer_length < 32) 293 /* Start with a minimum 32-character buffer. */ 294 new_length = 32; 295 else if (as->buffer_length < 8192) 296 /* Buffers under 8k are doubled for speed. */ 297 new_length = as->buffer_length + as->buffer_length; 298 else { 299 /* Buffers 8k and over grow by at least 25% each time. */ 300 new_length = as->buffer_length + as->buffer_length / 4; 301 /* Be safe: If size wraps, fail. */ 302 if (new_length < as->buffer_length) { 303 /* On failure, wipe the string and return NULL. */ 304 archive_string_free(as); 305 errno = ENOMEM;/* Make sure errno has ENOMEM. */ 306 return (NULL); 307 } 308 } 309 /* 310 * The computation above is a lower limit to how much we'll 311 * grow the buffer. In any case, we have to grow it enough to 312 * hold the request. 313 */ 314 if (new_length < s) 315 new_length = s; 316 /* Now we can reallocate the buffer. */ 317 p = (char *)realloc(as->s, new_length); 318 if (p == NULL) { 319 /* On failure, wipe the string and return NULL. */ 320 archive_string_free(as); 321 errno = ENOMEM;/* Make sure errno has ENOMEM. */ 322 return (NULL); 323 } 324 325 as->s = p; 326 as->buffer_length = new_length; 327 return (as); 328 } 329 330 /* 331 * TODO: See if there's a way to avoid scanning 332 * the source string twice. Then test to see 333 * if it actually helps (remember that we're almost 334 * always called with pretty short arguments, so 335 * such an optimization might not help). 336 */ 337 struct archive_string * 338 archive_strncat(struct archive_string *as, const void *_p, size_t n) 339 { 340 size_t s; 341 const char *p, *pp; 342 343 p = (const char *)_p; 344 345 /* Like strlen(p), except won't examine positions beyond p[n]. */ 346 s = 0; 347 pp = p; 348 while (s < n && *pp) { 349 pp++; 350 s++; 351 } 352 if ((as = archive_string_append(as, p, s)) == NULL) 353 __archive_errx(1, "Out of memory"); 354 return (as); 355 } 356 357 struct archive_wstring * 358 archive_wstrncat(struct archive_wstring *as, const wchar_t *p, size_t n) 359 { 360 size_t s; 361 const wchar_t *pp; 362 363 /* Like strlen(p), except won't examine positions beyond p[n]. */ 364 s = 0; 365 pp = p; 366 while (s < n && *pp) { 367 pp++; 368 s++; 369 } 370 if ((as = archive_wstring_append(as, p, s)) == NULL) 371 __archive_errx(1, "Out of memory"); 372 return (as); 373 } 374 375 struct archive_string * 376 archive_strcat(struct archive_string *as, const void *p) 377 { 378 /* strcat is just strncat without an effective limit. 379 * Assert that we'll never get called with a source 380 * string over 16MB. 381 * TODO: Review all uses of strcat in the source 382 * and try to replace them with strncat(). 383 */ 384 return archive_strncat(as, p, 0x1000000); 385 } 386 387 struct archive_wstring * 388 archive_wstrcat(struct archive_wstring *as, const wchar_t *p) 389 { 390 /* Ditto. */ 391 return archive_wstrncat(as, p, 0x1000000); 392 } 393 394 struct archive_string * 395 archive_strappend_char(struct archive_string *as, char c) 396 { 397 if ((as = archive_string_append(as, &c, 1)) == NULL) 398 __archive_errx(1, "Out of memory"); 399 return (as); 400 } 401 402 struct archive_wstring * 403 archive_wstrappend_wchar(struct archive_wstring *as, wchar_t c) 404 { 405 if ((as = archive_wstring_append(as, &c, 1)) == NULL) 406 __archive_errx(1, "Out of memory"); 407 return (as); 408 } 409 410 /* 411 * Get the "current character set" name to use with iconv. 412 * On FreeBSD, the empty character set name "" chooses 413 * the correct character encoding for the current locale, 414 * so this isn't necessary. 415 * But iconv on Mac OS 10.6 doesn't seem to handle this correctly; 416 * on that system, we have to explicitly call nl_langinfo() 417 * to get the right name. Not sure about other platforms. 418 * 419 * NOTE: GNU libiconv does not recognize the character-set name 420 * which some platform nl_langinfo(CODESET) returns, so we should 421 * use locale_charset() instead of nl_langinfo(CODESET) for GNU libiconv. 422 */ 423 static const char * 424 default_iconv_charset(const char *charset) { 425 if (charset != NULL && charset[0] != '\0') 426 return charset; 427 #if HAVE_LOCALE_CHARSET && !defined(__APPLE__) 428 /* locale_charset() is broken on Mac OS */ 429 return locale_charset(); 430 #elif HAVE_NL_LANGINFO 431 return nl_langinfo(CODESET); 432 #else 433 return ""; 434 #endif 435 } 436 437 #if defined(_WIN32) && !defined(__CYGWIN__) 438 439 /* 440 * Convert MBS to WCS. 441 * Note: returns -1 if conversion fails. 442 */ 443 int 444 archive_wstring_append_from_mbs(struct archive_wstring *dest, 445 const char *p, size_t len) 446 { 447 return archive_wstring_append_from_mbs_in_codepage(dest, p, len, NULL); 448 } 449 450 static int 451 archive_wstring_append_from_mbs_in_codepage(struct archive_wstring *dest, 452 const char *s, size_t length, struct archive_string_conv *sc) 453 { 454 int count, ret = 0; 455 UINT from_cp; 456 457 if (sc != NULL) 458 from_cp = sc->from_cp; 459 else 460 from_cp = get_current_codepage(); 461 462 if (from_cp == CP_C_LOCALE) { 463 /* 464 * "C" locale special processing. 465 */ 466 wchar_t *ws; 467 const unsigned char *mp; 468 469 if (NULL == archive_wstring_ensure(dest, 470 dest->length + length + 1)) 471 return (-1); 472 473 ws = dest->s + dest->length; 474 mp = (const unsigned char *)s; 475 count = 0; 476 while (count < (int)length && *mp) { 477 *ws++ = (wchar_t)*mp++; 478 count++; 479 } 480 } else if (sc != NULL && 481 (sc->flag & (SCONV_NORMALIZATION_C | SCONV_NORMALIZATION_D))) { 482 /* 483 * Normalize UTF-8 and UTF-16BE and convert it directly 484 * to UTF-16 as wchar_t. 485 */ 486 struct archive_string u16; 487 int saved_flag = sc->flag;/* save current flag. */ 488 489 if (is_big_endian()) 490 sc->flag |= SCONV_TO_UTF16BE; 491 else 492 sc->flag |= SCONV_TO_UTF16LE; 493 494 if (sc->flag & SCONV_FROM_UTF16) { 495 /* 496 * UTF-16BE/LE NFD ===> UTF-16 NFC 497 * UTF-16BE/LE NFC ===> UTF-16 NFD 498 */ 499 count = (int)utf16nbytes(s, length); 500 } else { 501 /* 502 * UTF-8 NFD ===> UTF-16 NFC 503 * UTF-8 NFC ===> UTF-16 NFD 504 */ 505 count = (int)mbsnbytes(s, length); 506 } 507 u16.s = (char *)dest->s; 508 u16.length = dest->length << 1;; 509 u16.buffer_length = dest->buffer_length; 510 if (sc->flag & SCONV_NORMALIZATION_C) 511 ret = archive_string_normalize_C(&u16, s, count, sc); 512 else 513 ret = archive_string_normalize_D(&u16, s, count, sc); 514 dest->s = (wchar_t *)u16.s; 515 dest->length = u16.length >> 1; 516 dest->buffer_length = u16.buffer_length; 517 sc->flag = saved_flag;/* restore the saved flag. */ 518 return (ret); 519 } else if (sc != NULL && (sc->flag & SCONV_FROM_UTF16)) { 520 count = (int)utf16nbytes(s, length); 521 count >>= 1; /* to be WCS length */ 522 /* Allocate memory for WCS. */ 523 if (NULL == archive_wstring_ensure(dest, 524 dest->length + count + 1)) 525 return (-1); 526 wmemcpy(dest->s + dest->length, (const wchar_t *)s, count); 527 if ((sc->flag & SCONV_FROM_UTF16BE) && !is_big_endian()) { 528 uint16_t *u16 = (uint16_t *)(dest->s + dest->length); 529 int b; 530 for (b = 0; b < count; b++) { 531 uint16_t val = archive_le16dec(u16+b); 532 archive_be16enc(u16+b, val); 533 } 534 } else if ((sc->flag & SCONV_FROM_UTF16LE) && is_big_endian()) { 535 uint16_t *u16 = (uint16_t *)(dest->s + dest->length); 536 int b; 537 for (b = 0; b < count; b++) { 538 uint16_t val = archive_be16dec(u16+b); 539 archive_le16enc(u16+b, val); 540 } 541 } 542 } else { 543 DWORD mbflag; 544 size_t buffsize; 545 546 if (sc == NULL) 547 mbflag = 0; 548 else if (sc->flag & SCONV_FROM_CHARSET) { 549 /* Do not trust the length which comes from 550 * an archive file. */ 551 length = mbsnbytes(s, length); 552 mbflag = 0; 553 } else 554 mbflag = MB_PRECOMPOSED; 555 556 buffsize = dest->length + length + 1; 557 do { 558 /* Allocate memory for WCS. */ 559 if (NULL == archive_wstring_ensure(dest, buffsize)) 560 return (-1); 561 /* Convert MBS to WCS. */ 562 count = MultiByteToWideChar(from_cp, 563 mbflag, s, (int)length, dest->s + dest->length, 564 (int)(dest->buffer_length >> 1) -1); 565 if (count == 0 && 566 GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 567 /* Expand the WCS buffer. */ 568 buffsize = dest->buffer_length << 1; 569 continue; 570 } 571 if (count == 0 && length != 0) 572 ret = -1; 573 break; 574 } while (1); 575 } 576 dest->length += count; 577 dest->s[dest->length] = L'\0'; 578 return (ret); 579 } 580 581 #else 582 583 /* 584 * Convert MBS to WCS. 585 * Note: returns -1 if conversion fails. 586 */ 587 int 588 archive_wstring_append_from_mbs(struct archive_wstring *dest, 589 const char *p, size_t len) 590 { 591 size_t r; 592 int ret_val = 0; 593 /* 594 * No single byte will be more than one wide character, 595 * so this length estimate will always be big enough. 596 */ 597 // size_t wcs_length = len; 598 size_t mbs_length = len; 599 const char *mbs = p; 600 wchar_t *wcs; 601 #if HAVE_MBRTOWC 602 mbstate_t shift_state; 603 604 memset(&shift_state, 0, sizeof(shift_state)); 605 #endif 606 /* 607 * As we decided to have wcs_length == mbs_length == len 608 * we can use len here instead of wcs_length 609 */ 610 if (NULL == archive_wstring_ensure(dest, dest->length + len + 1)) 611 return (-1); 612 wcs = dest->s + dest->length; 613 /* 614 * We cannot use mbsrtowcs/mbstowcs here because those may convert 615 * extra MBS when strlen(p) > len and one wide character consists of 616 * multi bytes. 617 */ 618 while (*mbs && mbs_length > 0) { 619 /* 620 * The buffer we allocated is always big enough. 621 * Keep this code path in a comment if we decide to choose 622 * smaller wcs_length in the future 623 */ 624 /* 625 if (wcs_length == 0) { 626 dest->length = wcs - dest->s; 627 dest->s[dest->length] = L'\0'; 628 wcs_length = mbs_length; 629 if (NULL == archive_wstring_ensure(dest, 630 dest->length + wcs_length + 1)) 631 return (-1); 632 wcs = dest->s + dest->length; 633 } 634 */ 635 #if HAVE_MBRTOWC 636 r = mbrtowc(wcs, mbs, mbs_length, &shift_state); 637 #else 638 r = mbtowc(wcs, mbs, mbs_length); 639 #endif 640 if (r == (size_t)-1 || r == (size_t)-2) { 641 ret_val = -1; 642 break; 643 } 644 if (r == 0 || r > mbs_length) 645 break; 646 wcs++; 647 // wcs_length--; 648 mbs += r; 649 mbs_length -= r; 650 } 651 dest->length = wcs - dest->s; 652 dest->s[dest->length] = L'\0'; 653 return (ret_val); 654 } 655 656 #endif 657 658 #if defined(_WIN32) && !defined(__CYGWIN__) 659 660 /* 661 * WCS ==> MBS. 662 * Note: returns -1 if conversion fails. 663 * 664 * Win32 builds use WideCharToMultiByte from the Windows API. 665 * (Maybe Cygwin should too? WideCharToMultiByte will know a 666 * lot more about local character encodings than the wcrtomb() 667 * wrapper is going to know.) 668 */ 669 int 670 archive_string_append_from_wcs(struct archive_string *as, 671 const wchar_t *w, size_t len) 672 { 673 return archive_string_append_from_wcs_in_codepage(as, w, len, NULL); 674 } 675 676 static int 677 archive_string_append_from_wcs_in_codepage(struct archive_string *as, 678 const wchar_t *ws, size_t len, struct archive_string_conv *sc) 679 { 680 BOOL defchar_used, *dp; 681 int count, ret = 0; 682 UINT to_cp; 683 int wslen = (int)len; 684 685 if (sc != NULL) 686 to_cp = sc->to_cp; 687 else 688 to_cp = get_current_codepage(); 689 690 if (to_cp == CP_C_LOCALE) { 691 /* 692 * "C" locale special processing. 693 */ 694 const wchar_t *wp = ws; 695 char *p; 696 697 if (NULL == archive_string_ensure(as, 698 as->length + wslen +1)) 699 return (-1); 700 p = as->s + as->length; 701 count = 0; 702 defchar_used = 0; 703 while (count < wslen && *wp) { 704 if (*wp > 255) { 705 *p++ = '?'; 706 wp++; 707 defchar_used = 1; 708 } else 709 *p++ = (char)*wp++; 710 count++; 711 } 712 } else if (sc != NULL && (sc->flag & SCONV_TO_UTF16)) { 713 uint16_t *u16; 714 715 if (NULL == 716 archive_string_ensure(as, as->length + len * 2 + 2)) 717 return (-1); 718 u16 = (uint16_t *)(as->s + as->length); 719 count = 0; 720 defchar_used = 0; 721 if (sc->flag & SCONV_TO_UTF16BE) { 722 while (count < (int)len && *ws) { 723 archive_be16enc(u16+count, *ws); 724 ws++; 725 count++; 726 } 727 } else { 728 while (count < (int)len && *ws) { 729 archive_le16enc(u16+count, *ws); 730 ws++; 731 count++; 732 } 733 } 734 count <<= 1; /* to be byte size */ 735 } else { 736 /* Make sure the MBS buffer has plenty to set. */ 737 if (NULL == 738 archive_string_ensure(as, as->length + len * 2 + 1)) 739 return (-1); 740 do { 741 defchar_used = 0; 742 if (to_cp == CP_UTF8 || sc == NULL) 743 dp = NULL; 744 else 745 dp = &defchar_used; 746 count = WideCharToMultiByte(to_cp, 0, ws, wslen, 747 as->s + as->length, 748 (int)as->buffer_length - (int)as->length - 1, NULL, dp); 749 if (count == 0 && 750 GetLastError() == ERROR_INSUFFICIENT_BUFFER) { 751 /* Expand the MBS buffer and retry. */ 752 if (NULL == archive_string_ensure(as, 753 as->buffer_length + len)) 754 return (-1); 755 continue; 756 } 757 if (count == 0) 758 ret = -1; 759 break; 760 } while (1); 761 } 762 as->length += count; 763 as->s[as->length] = '\0'; 764 return (defchar_used?-1:ret); 765 } 766 767 #elif defined(HAVE_WCTOMB) || defined(HAVE_WCRTOMB) 768 769 /* 770 * Translates a wide character string into current locale character set 771 * and appends to the archive_string. Note: returns -1 if conversion 772 * fails. 773 */ 774 int 775 archive_string_append_from_wcs(struct archive_string *as, 776 const wchar_t *w, size_t len) 777 { 778 /* We cannot use the standard wcstombs() here because it 779 * cannot tell us how big the output buffer should be. So 780 * I've built a loop around wcrtomb() or wctomb() that 781 * converts a character at a time and resizes the string as 782 * needed. We prefer wcrtomb() when it's available because 783 * it's thread-safe. */ 784 int n, ret_val = 0; 785 char *p; 786 char *end; 787 #if HAVE_WCRTOMB 788 mbstate_t shift_state; 789 790 memset(&shift_state, 0, sizeof(shift_state)); 791 #else 792 /* Clear the shift state before starting. */ 793 wctomb(NULL, L'\0'); 794 #endif 795 /* 796 * Allocate buffer for MBS. 797 * We need this allocation here since it is possible that 798 * as->s is still NULL. 799 */ 800 if (archive_string_ensure(as, as->length + len + 1) == NULL) 801 return (-1); 802 803 p = as->s + as->length; 804 end = as->s + as->buffer_length - MB_CUR_MAX -1; 805 while (*w != L'\0' && len > 0) { 806 if (p >= end) { 807 as->length = p - as->s; 808 as->s[as->length] = '\0'; 809 /* Re-allocate buffer for MBS. */ 810 if (archive_string_ensure(as, 811 as->length + max(len * 2, 812 (size_t)MB_CUR_MAX) + 1) == NULL) 813 return (-1); 814 p = as->s + as->length; 815 end = as->s + as->buffer_length - MB_CUR_MAX -1; 816 } 817 #if HAVE_WCRTOMB 818 n = wcrtomb(p, *w++, &shift_state); 819 #else 820 n = wctomb(p, *w++); 821 #endif 822 if (n == -1) { 823 if (errno == EILSEQ) { 824 /* Skip an illegal wide char. */ 825 *p++ = '?'; 826 ret_val = -1; 827 } else { 828 ret_val = -1; 829 break; 830 } 831 } else 832 p += n; 833 len--; 834 } 835 as->length = p - as->s; 836 as->s[as->length] = '\0'; 837 return (ret_val); 838 } 839 840 #else /* HAVE_WCTOMB || HAVE_WCRTOMB */ 841 842 /* 843 * TODO: Test if __STDC_ISO_10646__ is defined. 844 * Non-Windows uses ISO C wcrtomb() or wctomb() to perform the conversion 845 * one character at a time. If a non-Windows platform doesn't have 846 * either of these, fall back to the built-in UTF8 conversion. 847 */ 848 int 849 archive_string_append_from_wcs(struct archive_string *as, 850 const wchar_t *w, size_t len) 851 { 852 (void)as;/* UNUSED */ 853 (void)w;/* UNUSED */ 854 (void)len;/* UNUSED */ 855 errno = ENOSYS; 856 return (-1); 857 } 858 859 #endif /* HAVE_WCTOMB || HAVE_WCRTOMB */ 860 861 /* 862 * Find a string conversion object by a pair of 'from' charset name 863 * and 'to' charset name from an archive object. 864 * Return NULL if not found. 865 */ 866 static struct archive_string_conv * 867 find_sconv_object(struct archive *a, const char *fc, const char *tc) 868 { 869 struct archive_string_conv *sc; 870 871 if (a == NULL) 872 return (NULL); 873 874 for (sc = a->sconv; sc != NULL; sc = sc->next) { 875 if (strcmp(sc->from_charset, fc) == 0 && 876 strcmp(sc->to_charset, tc) == 0) 877 break; 878 } 879 return (sc); 880 } 881 882 /* 883 * Register a string object to an archive object. 884 */ 885 static void 886 add_sconv_object(struct archive *a, struct archive_string_conv *sc) 887 { 888 struct archive_string_conv **psc; 889 890 /* Add a new sconv to sconv list. */ 891 psc = &(a->sconv); 892 while (*psc != NULL) 893 psc = &((*psc)->next); 894 *psc = sc; 895 } 896 897 static void 898 add_converter(struct archive_string_conv *sc, int (*converter) 899 (struct archive_string *, const void *, size_t, 900 struct archive_string_conv *)) 901 { 902 if (sc == NULL || sc->nconverter >= 2) 903 __archive_errx(1, "Programming error"); 904 sc->converter[sc->nconverter++] = converter; 905 } 906 907 static void 908 setup_converter(struct archive_string_conv *sc) 909 { 910 911 /* Reset. */ 912 sc->nconverter = 0; 913 914 /* 915 * Perform special sequence for the incorrect UTF-8 filenames 916 * made by libarchive2.x. 917 */ 918 if (sc->flag & SCONV_UTF8_LIBARCHIVE_2) { 919 add_converter(sc, strncat_from_utf8_libarchive2); 920 return; 921 } 922 923 /* 924 * Convert a string to UTF-16BE/LE. 925 */ 926 if (sc->flag & SCONV_TO_UTF16) { 927 /* 928 * If the current locale is UTF-8, we can translate 929 * a UTF-8 string into a UTF-16BE string. 930 */ 931 if (sc->flag & SCONV_FROM_UTF8) { 932 add_converter(sc, archive_string_append_unicode); 933 return; 934 } 935 936 #if defined(_WIN32) && !defined(__CYGWIN__) 937 if (sc->flag & SCONV_WIN_CP) { 938 if (sc->flag & SCONV_TO_UTF16BE) 939 add_converter(sc, win_strncat_to_utf16be); 940 else 941 add_converter(sc, win_strncat_to_utf16le); 942 return; 943 } 944 #endif 945 946 #if defined(HAVE_ICONV) 947 if (sc->cd != (iconv_t)-1) { 948 add_converter(sc, iconv_strncat_in_locale); 949 return; 950 } 951 #endif 952 953 if (sc->flag & SCONV_BEST_EFFORT) { 954 if (sc->flag & SCONV_TO_UTF16BE) 955 add_converter(sc, 956 best_effort_strncat_to_utf16be); 957 else 958 add_converter(sc, 959 best_effort_strncat_to_utf16le); 960 } else 961 /* Make sure we have no converter. */ 962 sc->nconverter = 0; 963 return; 964 } 965 966 /* 967 * Convert a string from UTF-16BE/LE. 968 */ 969 if (sc->flag & SCONV_FROM_UTF16) { 970 /* 971 * At least we should normalize a UTF-16BE string. 972 */ 973 if (sc->flag & SCONV_NORMALIZATION_D) 974 add_converter(sc,archive_string_normalize_D); 975 else if (sc->flag & SCONV_NORMALIZATION_C) 976 add_converter(sc, archive_string_normalize_C); 977 978 if (sc->flag & SCONV_TO_UTF8) { 979 /* 980 * If the current locale is UTF-8, we can translate 981 * a UTF-16BE/LE string into a UTF-8 string directly. 982 */ 983 if (!(sc->flag & 984 (SCONV_NORMALIZATION_D |SCONV_NORMALIZATION_C))) 985 add_converter(sc, 986 archive_string_append_unicode); 987 return; 988 } 989 990 #if defined(_WIN32) && !defined(__CYGWIN__) 991 if (sc->flag & SCONV_WIN_CP) { 992 if (sc->flag & SCONV_FROM_UTF16BE) 993 add_converter(sc, win_strncat_from_utf16be); 994 else 995 add_converter(sc, win_strncat_from_utf16le); 996 return; 997 } 998 #endif 999 1000 #if defined(HAVE_ICONV) 1001 if (sc->cd != (iconv_t)-1) { 1002 add_converter(sc, iconv_strncat_in_locale); 1003 return; 1004 } 1005 #endif 1006 1007 if ((sc->flag & (SCONV_BEST_EFFORT | SCONV_FROM_UTF16BE)) 1008 == (SCONV_BEST_EFFORT | SCONV_FROM_UTF16BE)) 1009 add_converter(sc, best_effort_strncat_from_utf16be); 1010 else if ((sc->flag & (SCONV_BEST_EFFORT | SCONV_FROM_UTF16LE)) 1011 == (SCONV_BEST_EFFORT | SCONV_FROM_UTF16LE)) 1012 add_converter(sc, best_effort_strncat_from_utf16le); 1013 else 1014 /* Make sure we have no converter. */ 1015 sc->nconverter = 0; 1016 return; 1017 } 1018 1019 if (sc->flag & SCONV_FROM_UTF8) { 1020 /* 1021 * At least we should normalize a UTF-8 string. 1022 */ 1023 if (sc->flag & SCONV_NORMALIZATION_D) 1024 add_converter(sc,archive_string_normalize_D); 1025 else if (sc->flag & SCONV_NORMALIZATION_C) 1026 add_converter(sc, archive_string_normalize_C); 1027 1028 /* 1029 * Copy UTF-8 string with a check of CESU-8. 1030 * Apparently, iconv does not check surrogate pairs in UTF-8 1031 * when both from-charset and to-charset are UTF-8, and then 1032 * we use our UTF-8 copy code. 1033 */ 1034 if (sc->flag & SCONV_TO_UTF8) { 1035 /* 1036 * If the current locale is UTF-8, we can translate 1037 * a UTF-16BE string into a UTF-8 string directly. 1038 */ 1039 if (!(sc->flag & 1040 (SCONV_NORMALIZATION_D |SCONV_NORMALIZATION_C))) 1041 add_converter(sc, strncat_from_utf8_to_utf8); 1042 return; 1043 } 1044 } 1045 1046 #if defined(_WIN32) && !defined(__CYGWIN__) 1047 /* 1048 * On Windows we can use Windows API for a string conversion. 1049 */ 1050 if (sc->flag & SCONV_WIN_CP) { 1051 add_converter(sc, strncat_in_codepage); 1052 return; 1053 } 1054 #endif 1055 1056 #if HAVE_ICONV 1057 if (sc->cd != (iconv_t)-1) { 1058 add_converter(sc, iconv_strncat_in_locale); 1059 /* 1060 * iconv generally does not support UTF-8-MAC and so 1061 * we have to the output of iconv from NFC to NFD if 1062 * need. 1063 */ 1064 if ((sc->flag & SCONV_FROM_CHARSET) && 1065 (sc->flag & SCONV_TO_UTF8)) { 1066 if (sc->flag & SCONV_NORMALIZATION_D) 1067 add_converter(sc, archive_string_normalize_D); 1068 } 1069 return; 1070 } 1071 #endif 1072 1073 /* 1074 * Try conversion in the best effort or no conversion. 1075 */ 1076 if ((sc->flag & SCONV_BEST_EFFORT) || sc->same) 1077 add_converter(sc, best_effort_strncat_in_locale); 1078 else 1079 /* Make sure we have no converter. */ 1080 sc->nconverter = 0; 1081 } 1082 1083 /* 1084 * Return canonicalized charset-name but this supports just UTF-8, UTF-16BE 1085 * and CP932 which are referenced in create_sconv_object(). 1086 */ 1087 static const char * 1088 canonical_charset_name(const char *charset) 1089 { 1090 char cs[16]; 1091 char *p; 1092 const char *s; 1093 1094 if (charset == NULL || charset[0] == '\0' 1095 || strlen(charset) > 15) 1096 return (charset); 1097 1098 /* Copy name to uppercase. */ 1099 p = cs; 1100 s = charset; 1101 while (*s) { 1102 char c = *s++; 1103 if (c >= 'a' && c <= 'z') 1104 c -= 'a' - 'A'; 1105 *p++ = c; 1106 } 1107 *p++ = '\0'; 1108 1109 if (strcmp(cs, "UTF-8") == 0 || 1110 strcmp(cs, "UTF8") == 0) 1111 return ("UTF-8"); 1112 if (strcmp(cs, "UTF-16BE") == 0 || 1113 strcmp(cs, "UTF16BE") == 0) 1114 return ("UTF-16BE"); 1115 if (strcmp(cs, "UTF-16LE") == 0 || 1116 strcmp(cs, "UTF16LE") == 0) 1117 return ("UTF-16LE"); 1118 if (strcmp(cs, "CP932") == 0) 1119 return ("CP932"); 1120 return (charset); 1121 } 1122 1123 /* 1124 * Create a string conversion object. 1125 */ 1126 static struct archive_string_conv * 1127 create_sconv_object(const char *fc, const char *tc, 1128 unsigned current_codepage, int flag) 1129 { 1130 struct archive_string_conv *sc; 1131 1132 sc = calloc(1, sizeof(*sc)); 1133 if (sc == NULL) 1134 return (NULL); 1135 sc->next = NULL; 1136 sc->from_charset = strdup(fc); 1137 if (sc->from_charset == NULL) { 1138 free(sc); 1139 return (NULL); 1140 } 1141 sc->to_charset = strdup(tc); 1142 if (sc->to_charset == NULL) { 1143 free(sc->from_charset); 1144 free(sc); 1145 return (NULL); 1146 } 1147 archive_string_init(&sc->utftmp); 1148 1149 if (flag & SCONV_TO_CHARSET) { 1150 /* 1151 * Convert characters from the current locale charset to 1152 * a specified charset. 1153 */ 1154 sc->from_cp = current_codepage; 1155 sc->to_cp = make_codepage_from_charset(tc); 1156 #if defined(_WIN32) && !defined(__CYGWIN__) 1157 if (IsValidCodePage(sc->to_cp)) 1158 flag |= SCONV_WIN_CP; 1159 #endif 1160 } else if (flag & SCONV_FROM_CHARSET) { 1161 /* 1162 * Convert characters from a specified charset to 1163 * the current locale charset. 1164 */ 1165 sc->to_cp = current_codepage; 1166 sc->from_cp = make_codepage_from_charset(fc); 1167 #if defined(_WIN32) && !defined(__CYGWIN__) 1168 if (IsValidCodePage(sc->from_cp)) 1169 flag |= SCONV_WIN_CP; 1170 #endif 1171 } 1172 1173 /* 1174 * Check if "from charset" and "to charset" are the same. 1175 */ 1176 if (strcmp(fc, tc) == 0 || 1177 (sc->from_cp != (unsigned)-1 && sc->from_cp == sc->to_cp)) 1178 sc->same = 1; 1179 else 1180 sc->same = 0; 1181 1182 /* 1183 * Mark if "from charset" or "to charset" are UTF-8 or UTF-16BE/LE. 1184 */ 1185 if (strcmp(tc, "UTF-8") == 0) 1186 flag |= SCONV_TO_UTF8; 1187 else if (strcmp(tc, "UTF-16BE") == 0) 1188 flag |= SCONV_TO_UTF16BE; 1189 else if (strcmp(tc, "UTF-16LE") == 0) 1190 flag |= SCONV_TO_UTF16LE; 1191 if (strcmp(fc, "UTF-8") == 0) 1192 flag |= SCONV_FROM_UTF8; 1193 else if (strcmp(fc, "UTF-16BE") == 0) 1194 flag |= SCONV_FROM_UTF16BE; 1195 else if (strcmp(fc, "UTF-16LE") == 0) 1196 flag |= SCONV_FROM_UTF16LE; 1197 #if defined(_WIN32) && !defined(__CYGWIN__) 1198 if (sc->to_cp == CP_UTF8) 1199 flag |= SCONV_TO_UTF8; 1200 else if (sc->to_cp == CP_UTF16BE) 1201 flag |= SCONV_TO_UTF16BE | SCONV_WIN_CP; 1202 else if (sc->to_cp == CP_UTF16LE) 1203 flag |= SCONV_TO_UTF16LE | SCONV_WIN_CP; 1204 if (sc->from_cp == CP_UTF8) 1205 flag |= SCONV_FROM_UTF8; 1206 else if (sc->from_cp == CP_UTF16BE) 1207 flag |= SCONV_FROM_UTF16BE | SCONV_WIN_CP; 1208 else if (sc->from_cp == CP_UTF16LE) 1209 flag |= SCONV_FROM_UTF16LE | SCONV_WIN_CP; 1210 #endif 1211 1212 /* 1213 * Set a flag for Unicode NFD. Usually iconv cannot correctly 1214 * handle it. So we have to translate NFD characters to NFC ones 1215 * ourselves before iconv handles. Another reason is to prevent 1216 * that the same sight of two filenames, one is NFC and other 1217 * is NFD, would be in its directory. 1218 * On Mac OS X, although its filesystem layer automatically 1219 * convert filenames to NFD, it would be useful for filename 1220 * comparing to find out the same filenames that we normalize 1221 * that to be NFD ourselves. 1222 */ 1223 if ((flag & SCONV_FROM_CHARSET) && 1224 (flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8))) { 1225 #if defined(__APPLE__) 1226 if (flag & SCONV_TO_UTF8) 1227 flag |= SCONV_NORMALIZATION_D; 1228 else 1229 #endif 1230 flag |= SCONV_NORMALIZATION_C; 1231 } 1232 #if defined(__APPLE__) 1233 /* 1234 * In case writing an archive file, make sure that a filename 1235 * going to be passed to iconv is a Unicode NFC string since 1236 * a filename in HFS Plus filesystem is a Unicode NFD one and 1237 * iconv cannot handle it with "UTF-8" charset. It is simpler 1238 * than a use of "UTF-8-MAC" charset. 1239 */ 1240 if ((flag & SCONV_TO_CHARSET) && 1241 (flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) && 1242 !(flag & (SCONV_TO_UTF16 | SCONV_TO_UTF8))) 1243 flag |= SCONV_NORMALIZATION_C; 1244 /* 1245 * In case reading an archive file. make sure that a filename 1246 * will be passed to users is a Unicode NFD string in order to 1247 * correctly compare the filename with other one which comes 1248 * from HFS Plus filesystem. 1249 */ 1250 if ((flag & SCONV_FROM_CHARSET) && 1251 !(flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) && 1252 (flag & SCONV_TO_UTF8)) 1253 flag |= SCONV_NORMALIZATION_D; 1254 #endif 1255 1256 #if defined(HAVE_ICONV) 1257 sc->cd_w = (iconv_t)-1; 1258 /* 1259 * Create an iconv object. 1260 */ 1261 if (((flag & (SCONV_TO_UTF8 | SCONV_TO_UTF16)) && 1262 (flag & (SCONV_FROM_UTF8 | SCONV_FROM_UTF16))) || 1263 (flag & SCONV_WIN_CP)) { 1264 /* This case we won't use iconv. */ 1265 sc->cd = (iconv_t)-1; 1266 } else { 1267 sc->cd = iconv_open(tc, fc); 1268 if (sc->cd == (iconv_t)-1 && (sc->flag & SCONV_BEST_EFFORT)) { 1269 /* 1270 * Unfortunately, all of iconv implements do support 1271 * "CP932" character-set, so we should use "SJIS" 1272 * instead if iconv_open failed. 1273 */ 1274 if (strcmp(tc, "CP932") == 0) 1275 sc->cd = iconv_open("SJIS", fc); 1276 else if (strcmp(fc, "CP932") == 0) 1277 sc->cd = iconv_open(tc, "SJIS"); 1278 } 1279 #if defined(_WIN32) && !defined(__CYGWIN__) 1280 /* 1281 * archive_mstring on Windows directly convert multi-bytes 1282 * into archive_wstring in order not to depend on locale 1283 * so that you can do a I18N programming. This will be 1284 * used only in archive_mstring_copy_mbs_len_l so far. 1285 */ 1286 if (flag & SCONV_FROM_CHARSET) { 1287 sc->cd_w = iconv_open("UTF-8", fc); 1288 if (sc->cd_w == (iconv_t)-1 && 1289 (sc->flag & SCONV_BEST_EFFORT)) { 1290 if (strcmp(fc, "CP932") == 0) 1291 sc->cd_w = iconv_open("UTF-8", "SJIS"); 1292 } 1293 } 1294 #endif /* _WIN32 && !__CYGWIN__ */ 1295 } 1296 #endif /* HAVE_ICONV */ 1297 1298 sc->flag = flag; 1299 1300 /* 1301 * Set up converters. 1302 */ 1303 setup_converter(sc); 1304 1305 return (sc); 1306 } 1307 1308 /* 1309 * Free a string conversion object. 1310 */ 1311 static void 1312 free_sconv_object(struct archive_string_conv *sc) 1313 { 1314 free(sc->from_charset); 1315 free(sc->to_charset); 1316 archive_string_free(&sc->utftmp); 1317 #if HAVE_ICONV 1318 if (sc->cd != (iconv_t)-1) 1319 iconv_close(sc->cd); 1320 if (sc->cd_w != (iconv_t)-1) 1321 iconv_close(sc->cd_w); 1322 #endif 1323 free(sc); 1324 } 1325 1326 #if defined(_WIN32) && !defined(__CYGWIN__) 1327 static unsigned 1328 my_atoi(const char *p) 1329 { 1330 unsigned cp; 1331 1332 cp = 0; 1333 while (*p) { 1334 if (*p >= '0' && *p <= '9') 1335 cp = cp * 10 + (*p - '0'); 1336 else 1337 return (-1); 1338 p++; 1339 } 1340 return (cp); 1341 } 1342 1343 /* 1344 * Translate Charset name (as used by iconv) into CodePage (as used by Windows) 1345 * Return -1 if failed. 1346 * 1347 * Note: This translation code may be insufficient. 1348 */ 1349 static struct charset { 1350 const char *name; 1351 unsigned cp; 1352 } charsets[] = { 1353 /* MUST BE SORTED! */ 1354 {"ASCII", 1252}, 1355 {"ASMO-708", 708}, 1356 {"BIG5", 950}, 1357 {"CHINESE", 936}, 1358 {"CP367", 1252}, 1359 {"CP819", 1252}, 1360 {"CP1025", 21025}, 1361 {"DOS-720", 720}, 1362 {"DOS-862", 862}, 1363 {"EUC-CN", 51936}, 1364 {"EUC-JP", 51932}, 1365 {"EUC-KR", 949}, 1366 {"EUCCN", 51936}, 1367 {"EUCJP", 51932}, 1368 {"EUCKR", 949}, 1369 {"GB18030", 54936}, 1370 {"GB2312", 936}, 1371 {"HEBREW", 1255}, 1372 {"HZ-GB-2312", 52936}, 1373 {"IBM273", 20273}, 1374 {"IBM277", 20277}, 1375 {"IBM278", 20278}, 1376 {"IBM280", 20280}, 1377 {"IBM284", 20284}, 1378 {"IBM285", 20285}, 1379 {"IBM290", 20290}, 1380 {"IBM297", 20297}, 1381 {"IBM367", 1252}, 1382 {"IBM420", 20420}, 1383 {"IBM423", 20423}, 1384 {"IBM424", 20424}, 1385 {"IBM819", 1252}, 1386 {"IBM871", 20871}, 1387 {"IBM880", 20880}, 1388 {"IBM905", 20905}, 1389 {"IBM924", 20924}, 1390 {"ISO-8859-1", 28591}, 1391 {"ISO-8859-13", 28603}, 1392 {"ISO-8859-15", 28605}, 1393 {"ISO-8859-2", 28592}, 1394 {"ISO-8859-3", 28593}, 1395 {"ISO-8859-4", 28594}, 1396 {"ISO-8859-5", 28595}, 1397 {"ISO-8859-6", 28596}, 1398 {"ISO-8859-7", 28597}, 1399 {"ISO-8859-8", 28598}, 1400 {"ISO-8859-9", 28599}, 1401 {"ISO8859-1", 28591}, 1402 {"ISO8859-13", 28603}, 1403 {"ISO8859-15", 28605}, 1404 {"ISO8859-2", 28592}, 1405 {"ISO8859-3", 28593}, 1406 {"ISO8859-4", 28594}, 1407 {"ISO8859-5", 28595}, 1408 {"ISO8859-6", 28596}, 1409 {"ISO8859-7", 28597}, 1410 {"ISO8859-8", 28598}, 1411 {"ISO8859-9", 28599}, 1412 {"JOHAB", 1361}, 1413 {"KOI8-R", 20866}, 1414 {"KOI8-U", 21866}, 1415 {"KS_C_5601-1987", 949}, 1416 {"LATIN1", 1252}, 1417 {"LATIN2", 28592}, 1418 {"MACINTOSH", 10000}, 1419 {"SHIFT-JIS", 932}, 1420 {"SHIFT_JIS", 932}, 1421 {"SJIS", 932}, 1422 {"US", 1252}, 1423 {"US-ASCII", 1252}, 1424 {"UTF-16", 1200}, 1425 {"UTF-16BE", 1201}, 1426 {"UTF-16LE", 1200}, 1427 {"UTF-8", CP_UTF8}, 1428 {"X-EUROPA", 29001}, 1429 {"X-MAC-ARABIC", 10004}, 1430 {"X-MAC-CE", 10029}, 1431 {"X-MAC-CHINESEIMP", 10008}, 1432 {"X-MAC-CHINESETRAD", 10002}, 1433 {"X-MAC-CROATIAN", 10082}, 1434 {"X-MAC-CYRILLIC", 10007}, 1435 {"X-MAC-GREEK", 10006}, 1436 {"X-MAC-HEBREW", 10005}, 1437 {"X-MAC-ICELANDIC", 10079}, 1438 {"X-MAC-JAPANESE", 10001}, 1439 {"X-MAC-KOREAN", 10003}, 1440 {"X-MAC-ROMANIAN", 10010}, 1441 {"X-MAC-THAI", 10021}, 1442 {"X-MAC-TURKISH", 10081}, 1443 {"X-MAC-UKRAINIAN", 10017}, 1444 }; 1445 static unsigned 1446 make_codepage_from_charset(const char *charset) 1447 { 1448 char cs[16]; 1449 char *p; 1450 unsigned cp; 1451 int a, b; 1452 1453 if (charset == NULL || strlen(charset) > 15) 1454 return -1; 1455 1456 /* Copy name to uppercase. */ 1457 p = cs; 1458 while (*charset) { 1459 char c = *charset++; 1460 if (c >= 'a' && c <= 'z') 1461 c -= 'a' - 'A'; 1462 *p++ = c; 1463 } 1464 *p++ = '\0'; 1465 cp = -1; 1466 1467 /* Look it up in the table first, so that we can easily 1468 * override CP367, which we map to 1252 instead of 367. */ 1469 a = 0; 1470 b = sizeof(charsets)/sizeof(charsets[0]); 1471 while (b > a) { 1472 int c = (b + a) / 2; 1473 int r = strcmp(charsets[c].name, cs); 1474 if (r < 0) 1475 a = c + 1; 1476 else if (r > 0) 1477 b = c; 1478 else 1479 return charsets[c].cp; 1480 } 1481 1482 /* If it's not in the table, try to parse it. */ 1483 switch (*cs) { 1484 case 'C': 1485 if (cs[1] == 'P' && cs[2] >= '0' && cs[2] <= '9') { 1486 cp = my_atoi(cs + 2); 1487 } else if (strcmp(cs, "CP_ACP") == 0) 1488 cp = get_current_codepage(); 1489 else if (strcmp(cs, "CP_OEMCP") == 0) 1490 cp = get_current_oemcp(); 1491 break; 1492 case 'I': 1493 if (cs[1] == 'B' && cs[2] == 'M' && 1494 cs[3] >= '0' && cs[3] <= '9') { 1495 cp = my_atoi(cs + 3); 1496 } 1497 break; 1498 case 'W': 1499 if (strncmp(cs, "WINDOWS-", 8) == 0) { 1500 cp = my_atoi(cs + 8); 1501 if (cp != 874 && (cp < 1250 || cp > 1258)) 1502 cp = -1;/* This may invalid code. */ 1503 } 1504 break; 1505 } 1506 return (cp); 1507 } 1508 1509 /* 1510 * Return ANSI Code Page of current locale set by setlocale(). 1511 */ 1512 static unsigned 1513 get_current_codepage(void) 1514 { 1515 char *locale, *p; 1516 unsigned cp; 1517 1518 locale = setlocale(LC_CTYPE, NULL); 1519 if (locale == NULL) 1520 return (GetACP()); 1521 if (locale[0] == 'C' && locale[1] == '\0') 1522 return (CP_C_LOCALE); 1523 p = strrchr(locale, '.'); 1524 if (p == NULL) 1525 return (GetACP()); 1526 if (strcmp(p+1, "utf8") == 0) 1527 return CP_UTF8; 1528 cp = my_atoi(p+1); 1529 if ((int)cp <= 0) 1530 return (GetACP()); 1531 return (cp); 1532 } 1533 1534 /* 1535 * Translation table between Locale Name and ACP/OEMCP. 1536 */ 1537 static struct { 1538 unsigned acp; 1539 unsigned ocp; 1540 const char *locale; 1541 } acp_ocp_map[] = { 1542 { 950, 950, "Chinese_Taiwan" }, 1543 { 936, 936, "Chinese_People's Republic of China" }, 1544 { 950, 950, "Chinese_Taiwan" }, 1545 { 1250, 852, "Czech_Czech Republic" }, 1546 { 1252, 850, "Danish_Denmark" }, 1547 { 1252, 850, "Dutch_Netherlands" }, 1548 { 1252, 850, "Dutch_Belgium" }, 1549 { 1252, 437, "English_United States" }, 1550 { 1252, 850, "English_Australia" }, 1551 { 1252, 850, "English_Canada" }, 1552 { 1252, 850, "English_New Zealand" }, 1553 { 1252, 850, "English_United Kingdom" }, 1554 { 1252, 437, "English_United States" }, 1555 { 1252, 850, "Finnish_Finland" }, 1556 { 1252, 850, "French_France" }, 1557 { 1252, 850, "French_Belgium" }, 1558 { 1252, 850, "French_Canada" }, 1559 { 1252, 850, "French_Switzerland" }, 1560 { 1252, 850, "German_Germany" }, 1561 { 1252, 850, "German_Austria" }, 1562 { 1252, 850, "German_Switzerland" }, 1563 { 1253, 737, "Greek_Greece" }, 1564 { 1250, 852, "Hungarian_Hungary" }, 1565 { 1252, 850, "Icelandic_Iceland" }, 1566 { 1252, 850, "Italian_Italy" }, 1567 { 1252, 850, "Italian_Switzerland" }, 1568 { 932, 932, "Japanese_Japan" }, 1569 { 949, 949, "Korean_Korea" }, 1570 { 1252, 850, "Norwegian (BokmOl)_Norway" }, 1571 { 1252, 850, "Norwegian (BokmOl)_Norway" }, 1572 { 1252, 850, "Norwegian-Nynorsk_Norway" }, 1573 { 1250, 852, "Polish_Poland" }, 1574 { 1252, 850, "Portuguese_Portugal" }, 1575 { 1252, 850, "Portuguese_Brazil" }, 1576 { 1251, 866, "Russian_Russia" }, 1577 { 1250, 852, "Slovak_Slovakia" }, 1578 { 1252, 850, "Spanish_Spain" }, 1579 { 1252, 850, "Spanish_Mexico" }, 1580 { 1252, 850, "Spanish_Spain" }, 1581 { 1252, 850, "Swedish_Sweden" }, 1582 { 1254, 857, "Turkish_Turkey" }, 1583 { 0, 0, NULL} 1584 }; 1585 1586 /* 1587 * Return OEM Code Page of current locale set by setlocale(). 1588 */ 1589 static unsigned 1590 get_current_oemcp(void) 1591 { 1592 int i; 1593 char *locale, *p; 1594 size_t len; 1595 1596 locale = setlocale(LC_CTYPE, NULL); 1597 if (locale == NULL) 1598 return (GetOEMCP()); 1599 if (locale[0] == 'C' && locale[1] == '\0') 1600 return (CP_C_LOCALE); 1601 1602 p = strrchr(locale, '.'); 1603 if (p == NULL) 1604 return (GetOEMCP()); 1605 len = p - locale; 1606 for (i = 0; acp_ocp_map[i].acp; i++) { 1607 if (strncmp(acp_ocp_map[i].locale, locale, len) == 0) 1608 return (acp_ocp_map[i].ocp); 1609 } 1610 return (GetOEMCP()); 1611 } 1612 #else 1613 1614 /* 1615 * POSIX platform does not use CodePage. 1616 */ 1617 1618 static unsigned 1619 get_current_codepage(void) 1620 { 1621 return (-1);/* Unknown */ 1622 } 1623 static unsigned 1624 make_codepage_from_charset(const char *charset) 1625 { 1626 (void)charset; /* UNUSED */ 1627 return (-1);/* Unknown */ 1628 } 1629 static unsigned 1630 get_current_oemcp(void) 1631 { 1632 return (-1);/* Unknown */ 1633 } 1634 1635 #endif /* defined(_WIN32) && !defined(__CYGWIN__) */ 1636 1637 /* 1638 * Return a string conversion object. 1639 */ 1640 static struct archive_string_conv * 1641 get_sconv_object(struct archive *a, const char *fc, const char *tc, int flag) 1642 { 1643 struct archive_string_conv *sc; 1644 unsigned current_codepage; 1645 1646 /* Check if we have made the sconv object. */ 1647 sc = find_sconv_object(a, fc, tc); 1648 if (sc != NULL) 1649 return (sc); 1650 1651 if (a == NULL) 1652 current_codepage = get_current_codepage(); 1653 else 1654 current_codepage = a->current_codepage; 1655 1656 sc = create_sconv_object(canonical_charset_name(fc), 1657 canonical_charset_name(tc), current_codepage, flag); 1658 if (sc == NULL) { 1659 if (a != NULL) 1660 archive_set_error(a, ENOMEM, 1661 "Could not allocate memory for " 1662 "a string conversion object"); 1663 return (NULL); 1664 } 1665 1666 /* 1667 * If there is no converter for current string conversion object, 1668 * we cannot handle this conversion. 1669 */ 1670 if (sc->nconverter == 0) { 1671 if (a != NULL) { 1672 #if HAVE_ICONV 1673 archive_set_error(a, ARCHIVE_ERRNO_MISC, 1674 "iconv_open failed : Cannot handle ``%s''", 1675 (flag & SCONV_TO_CHARSET)?tc:fc); 1676 #else 1677 archive_set_error(a, ARCHIVE_ERRNO_MISC, 1678 "A character-set conversion not fully supported " 1679 "on this platform"); 1680 #endif 1681 } 1682 /* Failed; free a sconv object. */ 1683 free_sconv_object(sc); 1684 return (NULL); 1685 } 1686 1687 /* 1688 * Success! 1689 */ 1690 if (a != NULL) 1691 add_sconv_object(a, sc); 1692 return (sc); 1693 } 1694 1695 static const char * 1696 get_current_charset(struct archive *a) 1697 { 1698 const char *cur_charset; 1699 1700 if (a == NULL) 1701 cur_charset = default_iconv_charset(""); 1702 else { 1703 cur_charset = default_iconv_charset(a->current_code); 1704 if (a->current_code == NULL) { 1705 a->current_code = strdup(cur_charset); 1706 a->current_codepage = get_current_codepage(); 1707 a->current_oemcp = get_current_oemcp(); 1708 } 1709 } 1710 return (cur_charset); 1711 } 1712 1713 /* 1714 * Make and Return a string conversion object. 1715 * Return NULL if the platform does not support the specified conversion 1716 * and best_effort is 0. 1717 * If best_effort is set, A string conversion object must be returned 1718 * unless memory allocation for the object fails, but the conversion 1719 * might fail when non-ASCII code is found. 1720 */ 1721 struct archive_string_conv * 1722 archive_string_conversion_to_charset(struct archive *a, const char *charset, 1723 int best_effort) 1724 { 1725 int flag = SCONV_TO_CHARSET; 1726 1727 if (best_effort) 1728 flag |= SCONV_BEST_EFFORT; 1729 return (get_sconv_object(a, get_current_charset(a), charset, flag)); 1730 } 1731 1732 struct archive_string_conv * 1733 archive_string_conversion_from_charset(struct archive *a, const char *charset, 1734 int best_effort) 1735 { 1736 int flag = SCONV_FROM_CHARSET; 1737 1738 if (best_effort) 1739 flag |= SCONV_BEST_EFFORT; 1740 return (get_sconv_object(a, charset, get_current_charset(a), flag)); 1741 } 1742 1743 /* 1744 * archive_string_default_conversion_*_archive() are provided for Windows 1745 * platform because other archiver application use CP_OEMCP for 1746 * MultiByteToWideChar() and WideCharToMultiByte() for the filenames 1747 * in tar or zip files. But mbstowcs/wcstombs(CRT) usually use CP_ACP 1748 * unless you use setlocale(LC_ALL, ".OCP")(specify CP_OEMCP). 1749 * So we should make a string conversion between CP_ACP and CP_OEMCP 1750 * for compatibility. 1751 */ 1752 #if defined(_WIN32) && !defined(__CYGWIN__) 1753 struct archive_string_conv * 1754 archive_string_default_conversion_for_read(struct archive *a) 1755 { 1756 const char *cur_charset = get_current_charset(a); 1757 char oemcp[16]; 1758 1759 /* NOTE: a check of cur_charset is unneeded but we need 1760 * that get_current_charset() has been surely called at 1761 * this time whatever C compiler optimized. */ 1762 if (cur_charset != NULL && 1763 (a->current_codepage == CP_C_LOCALE || 1764 a->current_codepage == a->current_oemcp)) 1765 return (NULL);/* no conversion. */ 1766 1767 _snprintf(oemcp, sizeof(oemcp)-1, "CP%d", a->current_oemcp); 1768 /* Make sure a null termination must be set. */ 1769 oemcp[sizeof(oemcp)-1] = '\0'; 1770 return (get_sconv_object(a, oemcp, cur_charset, 1771 SCONV_FROM_CHARSET)); 1772 } 1773 1774 struct archive_string_conv * 1775 archive_string_default_conversion_for_write(struct archive *a) 1776 { 1777 const char *cur_charset = get_current_charset(a); 1778 char oemcp[16]; 1779 1780 /* NOTE: a check of cur_charset is unneeded but we need 1781 * that get_current_charset() has been surely called at 1782 * this time whatever C compiler optimized. */ 1783 if (cur_charset != NULL && 1784 (a->current_codepage == CP_C_LOCALE || 1785 a->current_codepage == a->current_oemcp)) 1786 return (NULL);/* no conversion. */ 1787 1788 _snprintf(oemcp, sizeof(oemcp)-1, "CP%d", a->current_oemcp); 1789 /* Make sure a null termination must be set. */ 1790 oemcp[sizeof(oemcp)-1] = '\0'; 1791 return (get_sconv_object(a, cur_charset, oemcp, 1792 SCONV_TO_CHARSET)); 1793 } 1794 #else 1795 struct archive_string_conv * 1796 archive_string_default_conversion_for_read(struct archive *a) 1797 { 1798 (void)a; /* UNUSED */ 1799 return (NULL); 1800 } 1801 1802 struct archive_string_conv * 1803 archive_string_default_conversion_for_write(struct archive *a) 1804 { 1805 (void)a; /* UNUSED */ 1806 return (NULL); 1807 } 1808 #endif 1809 1810 /* 1811 * Dispose of all character conversion objects in the archive object. 1812 */ 1813 void 1814 archive_string_conversion_free(struct archive *a) 1815 { 1816 struct archive_string_conv *sc; 1817 struct archive_string_conv *sc_next; 1818 1819 for (sc = a->sconv; sc != NULL; sc = sc_next) { 1820 sc_next = sc->next; 1821 free_sconv_object(sc); 1822 } 1823 a->sconv = NULL; 1824 free(a->current_code); 1825 a->current_code = NULL; 1826 } 1827 1828 /* 1829 * Return a conversion charset name. 1830 */ 1831 const char * 1832 archive_string_conversion_charset_name(struct archive_string_conv *sc) 1833 { 1834 if (sc->flag & SCONV_TO_CHARSET) 1835 return (sc->to_charset); 1836 else 1837 return (sc->from_charset); 1838 } 1839 1840 /* 1841 * Change the behavior of a string conversion. 1842 */ 1843 void 1844 archive_string_conversion_set_opt(struct archive_string_conv *sc, int opt) 1845 { 1846 switch (opt) { 1847 /* 1848 * A filename in UTF-8 was made with libarchive 2.x in a wrong 1849 * assumption that wchar_t was Unicode. 1850 * This option enables simulating the assumption in order to read 1851 * that filename correctly. 1852 */ 1853 case SCONV_SET_OPT_UTF8_LIBARCHIVE2X: 1854 #if (defined(_WIN32) && !defined(__CYGWIN__)) \ 1855 || defined(__STDC_ISO_10646__) || defined(__APPLE__) 1856 /* 1857 * Nothing to do for it since wchar_t on these platforms 1858 * is really Unicode. 1859 */ 1860 (void)sc; /* UNUSED */ 1861 #else 1862 if ((sc->flag & SCONV_UTF8_LIBARCHIVE_2) == 0) { 1863 sc->flag |= SCONV_UTF8_LIBARCHIVE_2; 1864 /* Set up string converters. */ 1865 setup_converter(sc); 1866 } 1867 #endif 1868 break; 1869 case SCONV_SET_OPT_NORMALIZATION_C: 1870 if ((sc->flag & SCONV_NORMALIZATION_C) == 0) { 1871 sc->flag |= SCONV_NORMALIZATION_C; 1872 sc->flag &= ~SCONV_NORMALIZATION_D; 1873 /* Set up string converters. */ 1874 setup_converter(sc); 1875 } 1876 break; 1877 case SCONV_SET_OPT_NORMALIZATION_D: 1878 #if defined(HAVE_ICONV) 1879 /* 1880 * If iconv will take the string, do not change the 1881 * setting of the normalization. 1882 */ 1883 if (!(sc->flag & SCONV_WIN_CP) && 1884 (sc->flag & (SCONV_FROM_UTF16 | SCONV_FROM_UTF8)) && 1885 !(sc->flag & (SCONV_TO_UTF16 | SCONV_TO_UTF8))) 1886 break; 1887 #endif 1888 if ((sc->flag & SCONV_NORMALIZATION_D) == 0) { 1889 sc->flag |= SCONV_NORMALIZATION_D; 1890 sc->flag &= ~SCONV_NORMALIZATION_C; 1891 /* Set up string converters. */ 1892 setup_converter(sc); 1893 } 1894 break; 1895 default: 1896 break; 1897 } 1898 } 1899 1900 /* 1901 * 1902 * Copy one archive_string to another in locale conversion. 1903 * 1904 * archive_strncat_l(); 1905 * archive_strncpy_l(); 1906 * 1907 */ 1908 1909 static size_t 1910 mbsnbytes(const void *_p, size_t n) 1911 { 1912 size_t s; 1913 const char *p, *pp; 1914 1915 if (_p == NULL) 1916 return (0); 1917 p = (const char *)_p; 1918 1919 /* Like strlen(p), except won't examine positions beyond p[n]. */ 1920 s = 0; 1921 pp = p; 1922 while (s < n && *pp) { 1923 pp++; 1924 s++; 1925 } 1926 return (s); 1927 } 1928 1929 static size_t 1930 utf16nbytes(const void *_p, size_t n) 1931 { 1932 size_t s; 1933 const char *p, *pp; 1934 1935 if (_p == NULL) 1936 return (0); 1937 p = (const char *)_p; 1938 1939 /* Like strlen(p), except won't examine positions beyond p[n]. */ 1940 s = 0; 1941 pp = p; 1942 n >>= 1; 1943 while (s < n && (pp[0] || pp[1])) { 1944 pp += 2; 1945 s++; 1946 } 1947 return (s<<1); 1948 } 1949 1950 int 1951 archive_strncpy_l(struct archive_string *as, const void *_p, size_t n, 1952 struct archive_string_conv *sc) 1953 { 1954 as->length = 0; 1955 return (archive_strncat_l(as, _p, n, sc)); 1956 } 1957 1958 int 1959 archive_strncat_l(struct archive_string *as, const void *_p, size_t n, 1960 struct archive_string_conv *sc) 1961 { 1962 const void *s; 1963 size_t length = 0; 1964 int i, r = 0, r2; 1965 1966 if (_p != NULL && n > 0) { 1967 if (sc != NULL && (sc->flag & SCONV_FROM_UTF16)) 1968 length = utf16nbytes(_p, n); 1969 else 1970 length = mbsnbytes(_p, n); 1971 } 1972 1973 /* We must allocate memory even if there is no data for conversion 1974 * or copy. This simulates archive_string_append behavior. */ 1975 if (length == 0) { 1976 int tn = 1; 1977 if (sc != NULL && (sc->flag & SCONV_TO_UTF16)) 1978 tn = 2; 1979 if (archive_string_ensure(as, as->length + tn) == NULL) 1980 return (-1); 1981 as->s[as->length] = 0; 1982 if (tn == 2) 1983 as->s[as->length+1] = 0; 1984 return (0); 1985 } 1986 1987 /* 1988 * If sc is NULL, we just make a copy. 1989 */ 1990 if (sc == NULL) { 1991 if (archive_string_append(as, _p, length) == NULL) 1992 return (-1);/* No memory */ 1993 return (0); 1994 } 1995 1996 s = _p; 1997 i = 0; 1998 if (sc->nconverter > 1) { 1999 sc->utftmp.length = 0; 2000 r2 = sc->converter[0](&(sc->utftmp), s, length, sc); 2001 if (r2 != 0 && errno == ENOMEM) 2002 return (r2); 2003 if (r > r2) 2004 r = r2; 2005 s = sc->utftmp.s; 2006 length = sc->utftmp.length; 2007 ++i; 2008 } 2009 r2 = sc->converter[i](as, s, length, sc); 2010 if (r > r2) 2011 r = r2; 2012 return (r); 2013 } 2014 2015 #if HAVE_ICONV 2016 2017 /* 2018 * Return -1 if conversion fails. 2019 */ 2020 static int 2021 iconv_strncat_in_locale(struct archive_string *as, const void *_p, 2022 size_t length, struct archive_string_conv *sc) 2023 { 2024 ICONV_CONST char *itp; 2025 size_t remaining; 2026 iconv_t cd; 2027 char *outp; 2028 size_t avail, bs; 2029 int return_value = 0; /* success */ 2030 int to_size, from_size; 2031 2032 if (sc->flag & SCONV_TO_UTF16) 2033 to_size = 2; 2034 else 2035 to_size = 1; 2036 if (sc->flag & SCONV_FROM_UTF16) 2037 from_size = 2; 2038 else 2039 from_size = 1; 2040 2041 if (archive_string_ensure(as, as->length + length*2+to_size) == NULL) 2042 return (-1); 2043 2044 cd = sc->cd; 2045 itp = (char *)(uintptr_t)_p; 2046 remaining = length; 2047 outp = as->s + as->length; 2048 avail = as->buffer_length - as->length - to_size; 2049 while (remaining >= (size_t)from_size) { 2050 size_t result = iconv(cd, &itp, &remaining, &outp, &avail); 2051 2052 if (result != (size_t)-1) 2053 break; /* Conversion completed. */ 2054 2055 if (errno == EILSEQ || errno == EINVAL) { 2056 /* 2057 * If an output charset is UTF-8 or UTF-16BE/LE, 2058 * unknown character should be U+FFFD 2059 * (replacement character). 2060 */ 2061 if (sc->flag & (SCONV_TO_UTF8 | SCONV_TO_UTF16)) { 2062 size_t rbytes; 2063 if (sc->flag & SCONV_TO_UTF8) 2064 rbytes = sizeof(utf8_replacement_char); 2065 else 2066 rbytes = 2; 2067 2068 if (avail < rbytes) { 2069 as->length = outp - as->s; 2070 bs = as->buffer_length + 2071 (remaining * to_size) + rbytes; 2072 if (NULL == 2073 archive_string_ensure(as, bs)) 2074 return (-1); 2075 outp = as->s + as->length; 2076 avail = as->buffer_length 2077 - as->length - to_size; 2078 } 2079 if (sc->flag & SCONV_TO_UTF8) 2080 memcpy(outp, utf8_replacement_char, sizeof(utf8_replacement_char)); 2081 else if (sc->flag & SCONV_TO_UTF16BE) 2082 archive_be16enc(outp, UNICODE_R_CHAR); 2083 else 2084 archive_le16enc(outp, UNICODE_R_CHAR); 2085 outp += rbytes; 2086 avail -= rbytes; 2087 } else { 2088 /* Skip the illegal input bytes. */ 2089 *outp++ = '?'; 2090 avail--; 2091 } 2092 itp += from_size; 2093 remaining -= from_size; 2094 return_value = -1; /* failure */ 2095 } else { 2096 /* E2BIG no output buffer, 2097 * Increase an output buffer. */ 2098 as->length = outp - as->s; 2099 bs = as->buffer_length + remaining * 2; 2100 if (NULL == archive_string_ensure(as, bs)) 2101 return (-1); 2102 outp = as->s + as->length; 2103 avail = as->buffer_length - as->length - to_size; 2104 } 2105 } 2106 as->length = outp - as->s; 2107 as->s[as->length] = 0; 2108 if (to_size == 2) 2109 as->s[as->length+1] = 0; 2110 return (return_value); 2111 } 2112 2113 #endif /* HAVE_ICONV */ 2114 2115 2116 #if defined(_WIN32) && !defined(__CYGWIN__) 2117 2118 /* 2119 * Translate a string from a some CodePage to an another CodePage by 2120 * Windows APIs, and copy the result. Return -1 if conversion fails. 2121 */ 2122 static int 2123 strncat_in_codepage(struct archive_string *as, 2124 const void *_p, size_t length, struct archive_string_conv *sc) 2125 { 2126 const char *s = (const char *)_p; 2127 struct archive_wstring aws; 2128 size_t l; 2129 int r, saved_flag; 2130 2131 archive_string_init(&aws); 2132 saved_flag = sc->flag; 2133 sc->flag &= ~(SCONV_NORMALIZATION_D | SCONV_NORMALIZATION_C); 2134 r = archive_wstring_append_from_mbs_in_codepage(&aws, s, length, sc); 2135 sc->flag = saved_flag; 2136 if (r != 0) { 2137 archive_wstring_free(&aws); 2138 if (errno != ENOMEM) 2139 archive_string_append(as, s, length); 2140 return (-1); 2141 } 2142 2143 l = as->length; 2144 r = archive_string_append_from_wcs_in_codepage( 2145 as, aws.s, aws.length, sc); 2146 if (r != 0 && errno != ENOMEM && l == as->length) 2147 archive_string_append(as, s, length); 2148 archive_wstring_free(&aws); 2149 return (r); 2150 } 2151 2152 /* 2153 * Test whether MBS ==> WCS is okay. 2154 */ 2155 static int 2156 invalid_mbs(const void *_p, size_t n, struct archive_string_conv *sc) 2157 { 2158 const char *p = (const char *)_p; 2159 unsigned codepage; 2160 DWORD mbflag = MB_ERR_INVALID_CHARS; 2161 2162 if (sc->flag & SCONV_FROM_CHARSET) 2163 codepage = sc->to_cp; 2164 else 2165 codepage = sc->from_cp; 2166 2167 if (codepage == CP_C_LOCALE) 2168 return (0); 2169 if (codepage != CP_UTF8) 2170 mbflag |= MB_PRECOMPOSED; 2171 2172 if (MultiByteToWideChar(codepage, mbflag, p, (int)n, NULL, 0) == 0) 2173 return (-1); /* Invalid */ 2174 return (0); /* Okay */ 2175 } 2176 2177 #else 2178 2179 /* 2180 * Test whether MBS ==> WCS is okay. 2181 */ 2182 static int 2183 invalid_mbs(const void *_p, size_t n, struct archive_string_conv *sc) 2184 { 2185 const char *p = (const char *)_p; 2186 size_t r; 2187 2188 #if HAVE_MBRTOWC 2189 mbstate_t shift_state; 2190 2191 memset(&shift_state, 0, sizeof(shift_state)); 2192 #else 2193 /* Clear the shift state before starting. */ 2194 mbtowc(NULL, NULL, 0); 2195 #endif 2196 while (n) { 2197 wchar_t wc; 2198 2199 #if HAVE_MBRTOWC 2200 r = mbrtowc(&wc, p, n, &shift_state); 2201 #else 2202 r = mbtowc(&wc, p, n); 2203 #endif 2204 if (r == (size_t)-1 || r == (size_t)-2) 2205 return (-1);/* Invalid. */ 2206 if (r == 0) 2207 break; 2208 p += r; 2209 n -= r; 2210 } 2211 (void)sc; /* UNUSED */ 2212 return (0); /* All Okey. */ 2213 } 2214 2215 #endif /* defined(_WIN32) && !defined(__CYGWIN__) */ 2216 2217 /* 2218 * Basically returns -1 because we cannot make a conversion of charset 2219 * without iconv but in some cases this would return 0. 2220 * Returns 0 if all copied characters are ASCII. 2221 * Returns 0 if both from-locale and to-locale are the same and those 2222 * can be WCS with no error. 2223 */ 2224 static int 2225 best_effort_strncat_in_locale(struct archive_string *as, const void *_p, 2226 size_t length, struct archive_string_conv *sc) 2227 { 2228 size_t remaining; 2229 const uint8_t *itp; 2230 int return_value = 0; /* success */ 2231 2232 /* 2233 * If both from-locale and to-locale is the same, this makes a copy. 2234 * And then this checks all copied MBS can be WCS if so returns 0. 2235 */ 2236 if (sc->same) { 2237 if (archive_string_append(as, _p, length) == NULL) 2238 return (-1);/* No memory */ 2239 return (invalid_mbs(_p, length, sc)); 2240 } 2241 2242 /* 2243 * If a character is ASCII, this just copies it. If not, this 2244 * assigns '?' character instead but in UTF-8 locale this assigns 2245 * byte sequence 0xEF 0xBD 0xBD, which are code point U+FFFD, 2246 * a Replacement Character in Unicode. 2247 */ 2248 2249 remaining = length; 2250 itp = (const uint8_t *)_p; 2251 while (*itp && remaining > 0) { 2252 if (*itp > 127) { 2253 // Non-ASCII: Substitute with suitable replacement 2254 if (sc->flag & SCONV_TO_UTF8) { 2255 if (archive_string_append(as, utf8_replacement_char, sizeof(utf8_replacement_char)) == NULL) { 2256 __archive_errx(1, "Out of memory"); 2257 } 2258 } else { 2259 archive_strappend_char(as, '?'); 2260 } 2261 return_value = -1; 2262 } else { 2263 archive_strappend_char(as, *itp); 2264 } 2265 ++itp; 2266 } 2267 return (return_value); 2268 } 2269 2270 2271 /* 2272 * Unicode conversion functions. 2273 * - UTF-8 <===> UTF-8 in removing surrogate pairs. 2274 * - UTF-8 NFD ===> UTF-8 NFC in removing surrogate pairs. 2275 * - UTF-8 made by libarchive 2.x ===> UTF-8. 2276 * - UTF-16BE <===> UTF-8. 2277 * 2278 */ 2279 2280 /* 2281 * Utility to convert a single UTF-8 sequence. 2282 * 2283 * Usually return used bytes, return used byte in negative value when 2284 * a unicode character is replaced with U+FFFD. 2285 * See also http://unicode.org/review/pr-121.html Public Review Issue #121 2286 * Recommended Practice for Replacement Characters. 2287 */ 2288 static int 2289 _utf8_to_unicode(uint32_t *pwc, const char *s, size_t n) 2290 { 2291 static const char utf8_count[256] = { 2292 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 00 - 0F */ 2293 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 10 - 1F */ 2294 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 20 - 2F */ 2295 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 30 - 3F */ 2296 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 40 - 4F */ 2297 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 50 - 5F */ 2298 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 60 - 6F */ 2299 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,/* 70 - 7F */ 2300 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 80 - 8F */ 2301 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* 90 - 9F */ 2302 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* A0 - AF */ 2303 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,/* B0 - BF */ 2304 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* C0 - CF */ 2305 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,/* D0 - DF */ 2306 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,/* E0 - EF */ 2307 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* F0 - FF */ 2308 }; 2309 int ch, i; 2310 int cnt; 2311 uint32_t wc; 2312 2313 /* Sanity check. */ 2314 if (n == 0) 2315 return (0); 2316 /* 2317 * Decode 1-4 bytes depending on the value of the first byte. 2318 */ 2319 ch = (unsigned char)*s; 2320 if (ch == 0) 2321 return (0); /* Standard: return 0 for end-of-string. */ 2322 cnt = utf8_count[ch]; 2323 2324 /* Invalid sequence or there are not plenty bytes. */ 2325 if ((int)n < cnt) { 2326 cnt = (int)n; 2327 for (i = 1; i < cnt; i++) { 2328 if ((s[i] & 0xc0) != 0x80) { 2329 cnt = i; 2330 break; 2331 } 2332 } 2333 goto invalid_sequence; 2334 } 2335 2336 /* Make a Unicode code point from a single UTF-8 sequence. */ 2337 switch (cnt) { 2338 case 1: /* 1 byte sequence. */ 2339 *pwc = ch & 0x7f; 2340 return (cnt); 2341 case 2: /* 2 bytes sequence. */ 2342 if ((s[1] & 0xc0) != 0x80) { 2343 cnt = 1; 2344 goto invalid_sequence; 2345 } 2346 *pwc = ((ch & 0x1f) << 6) | (s[1] & 0x3f); 2347 return (cnt); 2348 case 3: /* 3 bytes sequence. */ 2349 if ((s[1] & 0xc0) != 0x80) { 2350 cnt = 1; 2351 goto invalid_sequence; 2352 } 2353 if ((s[2] & 0xc0) != 0x80) { 2354 cnt = 2; 2355 goto invalid_sequence; 2356 } 2357 wc = ((ch & 0x0f) << 12) 2358 | ((s[1] & 0x3f) << 6) 2359 | (s[2] & 0x3f); 2360 if (wc < 0x800) 2361 goto invalid_sequence;/* Overlong sequence. */ 2362 break; 2363 case 4: /* 4 bytes sequence. */ 2364 if ((s[1] & 0xc0) != 0x80) { 2365 cnt = 1; 2366 goto invalid_sequence; 2367 } 2368 if ((s[2] & 0xc0) != 0x80) { 2369 cnt = 2; 2370 goto invalid_sequence; 2371 } 2372 if ((s[3] & 0xc0) != 0x80) { 2373 cnt = 3; 2374 goto invalid_sequence; 2375 } 2376 wc = ((ch & 0x07) << 18) 2377 | ((s[1] & 0x3f) << 12) 2378 | ((s[2] & 0x3f) << 6) 2379 | (s[3] & 0x3f); 2380 if (wc < 0x10000) 2381 goto invalid_sequence;/* Overlong sequence. */ 2382 break; 2383 default: /* Others are all invalid sequence. */ 2384 if (ch == 0xc0 || ch == 0xc1) 2385 cnt = 2; 2386 else if (ch >= 0xf5 && ch <= 0xf7) 2387 cnt = 4; 2388 else if (ch >= 0xf8 && ch <= 0xfb) 2389 cnt = 5; 2390 else if (ch == 0xfc || ch == 0xfd) 2391 cnt = 6; 2392 else 2393 cnt = 1; 2394 if ((int)n < cnt) 2395 cnt = (int)n; 2396 for (i = 1; i < cnt; i++) { 2397 if ((s[i] & 0xc0) != 0x80) { 2398 cnt = i; 2399 break; 2400 } 2401 } 2402 goto invalid_sequence; 2403 } 2404 2405 /* The code point larger than 0x10FFFF is not legal 2406 * Unicode values. */ 2407 if (wc > UNICODE_MAX) 2408 goto invalid_sequence; 2409 /* Correctly gets a Unicode, returns used bytes. */ 2410 *pwc = wc; 2411 return (cnt); 2412 invalid_sequence: 2413 *pwc = UNICODE_R_CHAR;/* set the Replacement Character instead. */ 2414 return (cnt * -1); 2415 } 2416 2417 static int 2418 utf8_to_unicode(uint32_t *pwc, const char *s, size_t n) 2419 { 2420 int cnt; 2421 2422 cnt = _utf8_to_unicode(pwc, s, n); 2423 /* Any of Surrogate pair is not legal Unicode values. */ 2424 if (cnt == 3 && IS_SURROGATE_PAIR_LA(*pwc)) 2425 return (-3); 2426 return (cnt); 2427 } 2428 2429 static inline uint32_t 2430 combine_surrogate_pair(uint32_t uc, uint32_t uc2) 2431 { 2432 uc -= 0xD800; 2433 uc *= 0x400; 2434 uc += uc2 - 0xDC00; 2435 uc += 0x10000; 2436 return (uc); 2437 } 2438 2439 /* 2440 * Convert a single UTF-8/CESU-8 sequence to a Unicode code point in 2441 * removing surrogate pairs. 2442 * 2443 * CESU-8: The Compatibility Encoding Scheme for UTF-16. 2444 * 2445 * Usually return used bytes, return used byte in negative value when 2446 * a unicode character is replaced with U+FFFD. 2447 */ 2448 static int 2449 cesu8_to_unicode(uint32_t *pwc, const char *s, size_t n) 2450 { 2451 uint32_t wc = 0; 2452 int cnt; 2453 2454 cnt = _utf8_to_unicode(&wc, s, n); 2455 if (cnt == 3 && IS_HIGH_SURROGATE_LA(wc)) { 2456 uint32_t wc2 = 0; 2457 if (n - 3 < 3) { 2458 /* Invalid byte sequence. */ 2459 goto invalid_sequence; 2460 } 2461 cnt = _utf8_to_unicode(&wc2, s+3, n-3); 2462 if (cnt != 3 || !IS_LOW_SURROGATE_LA(wc2)) { 2463 /* Invalid byte sequence. */ 2464 goto invalid_sequence; 2465 } 2466 wc = combine_surrogate_pair(wc, wc2); 2467 cnt = 6; 2468 } else if (cnt == 3 && IS_LOW_SURROGATE_LA(wc)) { 2469 /* Invalid byte sequence. */ 2470 goto invalid_sequence; 2471 } 2472 *pwc = wc; 2473 return (cnt); 2474 invalid_sequence: 2475 *pwc = UNICODE_R_CHAR;/* set the Replacement Character instead. */ 2476 if (cnt > 0) 2477 cnt *= -1; 2478 return (cnt); 2479 } 2480 2481 /* 2482 * Convert a Unicode code point to a single UTF-8 sequence. 2483 * 2484 * NOTE:This function does not check if the Unicode is legal or not. 2485 * Please you definitely check it before calling this. 2486 */ 2487 static size_t 2488 unicode_to_utf8(char *p, size_t remaining, uint32_t uc) 2489 { 2490 char *_p = p; 2491 2492 /* Invalid Unicode char maps to Replacement character */ 2493 if (uc > UNICODE_MAX) 2494 uc = UNICODE_R_CHAR; 2495 /* Translate code point to UTF8 */ 2496 if (uc <= 0x7f) { 2497 if (remaining == 0) 2498 return (0); 2499 *p++ = (char)uc; 2500 } else if (uc <= 0x7ff) { 2501 if (remaining < 2) 2502 return (0); 2503 *p++ = 0xc0 | ((uc >> 6) & 0x1f); 2504 *p++ = 0x80 | (uc & 0x3f); 2505 } else if (uc <= 0xffff) { 2506 if (remaining < 3) 2507 return (0); 2508 *p++ = 0xe0 | ((uc >> 12) & 0x0f); 2509 *p++ = 0x80 | ((uc >> 6) & 0x3f); 2510 *p++ = 0x80 | (uc & 0x3f); 2511 } else { 2512 if (remaining < 4) 2513 return (0); 2514 *p++ = 0xf0 | ((uc >> 18) & 0x07); 2515 *p++ = 0x80 | ((uc >> 12) & 0x3f); 2516 *p++ = 0x80 | ((uc >> 6) & 0x3f); 2517 *p++ = 0x80 | (uc & 0x3f); 2518 } 2519 return (p - _p); 2520 } 2521 2522 static int 2523 utf16be_to_unicode(uint32_t *pwc, const char *s, size_t n) 2524 { 2525 return (utf16_to_unicode(pwc, s, n, 1)); 2526 } 2527 2528 static int 2529 utf16le_to_unicode(uint32_t *pwc, const char *s, size_t n) 2530 { 2531 return (utf16_to_unicode(pwc, s, n, 0)); 2532 } 2533 2534 static int 2535 utf16_to_unicode(uint32_t *pwc, const char *s, size_t n, int be) 2536 { 2537 const char *utf16 = s; 2538 unsigned uc; 2539 2540 if (n == 0) 2541 return (0); 2542 if (n == 1) { 2543 /* set the Replacement Character instead. */ 2544 *pwc = UNICODE_R_CHAR; 2545 return (-1); 2546 } 2547 2548 if (be) 2549 uc = archive_be16dec(utf16); 2550 else 2551 uc = archive_le16dec(utf16); 2552 utf16 += 2; 2553 2554 /* If this is a surrogate pair, assemble the full code point.*/ 2555 if (IS_HIGH_SURROGATE_LA(uc)) { 2556 unsigned uc2; 2557 2558 if (n >= 4) { 2559 if (be) 2560 uc2 = archive_be16dec(utf16); 2561 else 2562 uc2 = archive_le16dec(utf16); 2563 } else 2564 uc2 = 0; 2565 if (IS_LOW_SURROGATE_LA(uc2)) { 2566 uc = combine_surrogate_pair(uc, uc2); 2567 utf16 += 2; 2568 } else { 2569 /* Undescribed code point should be U+FFFD 2570 * (replacement character). */ 2571 *pwc = UNICODE_R_CHAR; 2572 return (-2); 2573 } 2574 } 2575 2576 /* 2577 * Surrogate pair values(0xd800 through 0xdfff) are only 2578 * used by UTF-16, so, after above calculation, the code 2579 * must not be surrogate values, and Unicode has no codes 2580 * larger than 0x10ffff. Thus, those are not legal Unicode 2581 * values. 2582 */ 2583 if (IS_SURROGATE_PAIR_LA(uc) || uc > UNICODE_MAX) { 2584 /* Undescribed code point should be U+FFFD 2585 * (replacement character). */ 2586 *pwc = UNICODE_R_CHAR; 2587 return (((int)(utf16 - s)) * -1); 2588 } 2589 *pwc = uc; 2590 return ((int)(utf16 - s)); 2591 } 2592 2593 static size_t 2594 unicode_to_utf16be(char *p, size_t remaining, uint32_t uc) 2595 { 2596 char *utf16 = p; 2597 2598 if (uc > 0xffff) { 2599 /* We have a code point that won't fit into a 2600 * wchar_t; convert it to a surrogate pair. */ 2601 if (remaining < 4) 2602 return (0); 2603 uc -= 0x10000; 2604 archive_be16enc(utf16, ((uc >> 10) & 0x3ff) + 0xD800); 2605 archive_be16enc(utf16+2, (uc & 0x3ff) + 0xDC00); 2606 return (4); 2607 } else { 2608 if (remaining < 2) 2609 return (0); 2610 archive_be16enc(utf16, uc); 2611 return (2); 2612 } 2613 } 2614 2615 static size_t 2616 unicode_to_utf16le(char *p, size_t remaining, uint32_t uc) 2617 { 2618 char *utf16 = p; 2619 2620 if (uc > 0xffff) { 2621 /* We have a code point that won't fit into a 2622 * wchar_t; convert it to a surrogate pair. */ 2623 if (remaining < 4) 2624 return (0); 2625 uc -= 0x10000; 2626 archive_le16enc(utf16, ((uc >> 10) & 0x3ff) + 0xD800); 2627 archive_le16enc(utf16+2, (uc & 0x3ff) + 0xDC00); 2628 return (4); 2629 } else { 2630 if (remaining < 2) 2631 return (0); 2632 archive_le16enc(utf16, uc); 2633 return (2); 2634 } 2635 } 2636 2637 /* 2638 * Copy UTF-8 string in checking surrogate pair. 2639 * If any surrogate pair are found, it would be canonicalized. 2640 */ 2641 static int 2642 strncat_from_utf8_to_utf8(struct archive_string *as, const void *_p, 2643 size_t len, struct archive_string_conv *sc) 2644 { 2645 const char *s; 2646 char *p, *endp; 2647 int n, ret = 0; 2648 2649 (void)sc; /* UNUSED */ 2650 2651 if (archive_string_ensure(as, as->length + len + 1) == NULL) 2652 return (-1); 2653 2654 s = (const char *)_p; 2655 p = as->s + as->length; 2656 endp = as->s + as->buffer_length -1; 2657 do { 2658 uint32_t uc; 2659 const char *ss = s; 2660 size_t w; 2661 2662 /* 2663 * Forward byte sequence until a conversion of that is needed. 2664 */ 2665 while ((n = utf8_to_unicode(&uc, s, len)) > 0) { 2666 s += n; 2667 len -= n; 2668 } 2669 if (ss < s) { 2670 if (p + (s - ss) > endp) { 2671 as->length = p - as->s; 2672 if (archive_string_ensure(as, 2673 as->buffer_length + len + 1) == NULL) 2674 return (-1); 2675 p = as->s + as->length; 2676 endp = as->s + as->buffer_length -1; 2677 } 2678 2679 memcpy(p, ss, s - ss); 2680 p += s - ss; 2681 } 2682 2683 /* 2684 * If n is negative, current byte sequence needs a replacement. 2685 */ 2686 if (n < 0) { 2687 if (n == -3 && IS_SURROGATE_PAIR_LA(uc)) { 2688 /* Current byte sequence may be CESU-8. */ 2689 n = cesu8_to_unicode(&uc, s, len); 2690 } 2691 if (n < 0) { 2692 ret = -1; 2693 n *= -1;/* Use a replaced unicode character. */ 2694 } 2695 2696 /* Rebuild UTF-8 byte sequence. */ 2697 while ((w = unicode_to_utf8(p, endp - p, uc)) == 0) { 2698 as->length = p - as->s; 2699 if (archive_string_ensure(as, 2700 as->buffer_length + len + 1) == NULL) 2701 return (-1); 2702 p = as->s + as->length; 2703 endp = as->s + as->buffer_length -1; 2704 } 2705 p += w; 2706 s += n; 2707 len -= n; 2708 } 2709 } while (n > 0); 2710 as->length = p - as->s; 2711 as->s[as->length] = '\0'; 2712 return (ret); 2713 } 2714 2715 static int 2716 archive_string_append_unicode(struct archive_string *as, const void *_p, 2717 size_t len, struct archive_string_conv *sc) 2718 { 2719 const char *s; 2720 char *p, *endp; 2721 uint32_t uc; 2722 size_t w; 2723 int n, ret = 0, ts, tm; 2724 int (*parse)(uint32_t *, const char *, size_t); 2725 size_t (*unparse)(char *, size_t, uint32_t); 2726 2727 if (sc->flag & SCONV_TO_UTF16BE) { 2728 unparse = unicode_to_utf16be; 2729 ts = 2; 2730 } else if (sc->flag & SCONV_TO_UTF16LE) { 2731 unparse = unicode_to_utf16le; 2732 ts = 2; 2733 } else if (sc->flag & SCONV_TO_UTF8) { 2734 unparse = unicode_to_utf8; 2735 ts = 1; 2736 } else { 2737 /* 2738 * This case is going to be converted to another 2739 * character-set through iconv. 2740 */ 2741 if (sc->flag & SCONV_FROM_UTF16BE) { 2742 unparse = unicode_to_utf16be; 2743 ts = 2; 2744 } else if (sc->flag & SCONV_FROM_UTF16LE) { 2745 unparse = unicode_to_utf16le; 2746 ts = 2; 2747 } else { 2748 unparse = unicode_to_utf8; 2749 ts = 1; 2750 } 2751 } 2752 2753 if (sc->flag & SCONV_FROM_UTF16BE) { 2754 parse = utf16be_to_unicode; 2755 tm = 1; 2756 } else if (sc->flag & SCONV_FROM_UTF16LE) { 2757 parse = utf16le_to_unicode; 2758 tm = 1; 2759 } else { 2760 parse = cesu8_to_unicode; 2761 tm = ts; 2762 } 2763 2764 if (archive_string_ensure(as, as->length + len * tm + ts) == NULL) 2765 return (-1); 2766 2767 s = (const char *)_p; 2768 p = as->s + as->length; 2769 endp = as->s + as->buffer_length - ts; 2770 while ((n = parse(&uc, s, len)) != 0) { 2771 if (n < 0) { 2772 /* Use a replaced unicode character. */ 2773 n *= -1; 2774 ret = -1; 2775 } 2776 s += n; 2777 len -= n; 2778 while ((w = unparse(p, endp - p, uc)) == 0) { 2779 /* There is not enough output buffer so 2780 * we have to expand it. */ 2781 as->length = p - as->s; 2782 if (archive_string_ensure(as, 2783 as->buffer_length + len * tm + ts) == NULL) 2784 return (-1); 2785 p = as->s + as->length; 2786 endp = as->s + as->buffer_length - ts; 2787 } 2788 p += w; 2789 } 2790 as->length = p - as->s; 2791 as->s[as->length] = '\0'; 2792 if (ts == 2) 2793 as->s[as->length+1] = '\0'; 2794 return (ret); 2795 } 2796 2797 /* 2798 * Following Constants for Hangul compositions this information comes from 2799 * Unicode Standard Annex #15 http://unicode.org/reports/tr15/ 2800 */ 2801 #define HC_SBASE 0xAC00 2802 #define HC_LBASE 0x1100 2803 #define HC_VBASE 0x1161 2804 #define HC_TBASE 0x11A7 2805 #define HC_LCOUNT 19 2806 #define HC_VCOUNT 21 2807 #define HC_TCOUNT 28 2808 #define HC_NCOUNT (HC_VCOUNT * HC_TCOUNT) 2809 #define HC_SCOUNT (HC_LCOUNT * HC_NCOUNT) 2810 2811 static uint32_t 2812 get_nfc(uint32_t uc, uint32_t uc2) 2813 { 2814 int t, b; 2815 2816 t = 0; 2817 b = sizeof(u_composition_table)/sizeof(u_composition_table[0]) -1; 2818 while (b >= t) { 2819 int m = (t + b) / 2; 2820 if (u_composition_table[m].cp1 < uc) 2821 t = m + 1; 2822 else if (u_composition_table[m].cp1 > uc) 2823 b = m - 1; 2824 else if (u_composition_table[m].cp2 < uc2) 2825 t = m + 1; 2826 else if (u_composition_table[m].cp2 > uc2) 2827 b = m - 1; 2828 else 2829 return (u_composition_table[m].nfc); 2830 } 2831 return (0); 2832 } 2833 2834 #define FDC_MAX 10 /* The maximum number of Following Decomposable 2835 * Characters. */ 2836 2837 /* 2838 * Update first code point. 2839 */ 2840 #define UPDATE_UC(new_uc) do { \ 2841 uc = new_uc; \ 2842 ucptr = NULL; \ 2843 } while (0) 2844 2845 /* 2846 * Replace first code point with second code point. 2847 */ 2848 #define REPLACE_UC_WITH_UC2() do { \ 2849 uc = uc2; \ 2850 ucptr = uc2ptr; \ 2851 n = n2; \ 2852 } while (0) 2853 2854 #define EXPAND_BUFFER() do { \ 2855 as->length = p - as->s; \ 2856 if (archive_string_ensure(as, \ 2857 as->buffer_length + len * tm + ts) == NULL)\ 2858 return (-1); \ 2859 p = as->s + as->length; \ 2860 endp = as->s + as->buffer_length - ts; \ 2861 } while (0) 2862 2863 #define UNPARSE(p, endp, uc) do { \ 2864 while ((w = unparse(p, (endp) - (p), uc)) == 0) {\ 2865 EXPAND_BUFFER(); \ 2866 } \ 2867 p += w; \ 2868 } while (0) 2869 2870 /* 2871 * Write first code point. 2872 * If the code point has not be changed from its original code, 2873 * this just copies it from its original buffer pointer. 2874 * If not, this converts it to UTF-8 byte sequence and copies it. 2875 */ 2876 #define WRITE_UC() do { \ 2877 if (ucptr) { \ 2878 if (p + n > endp) \ 2879 EXPAND_BUFFER(); \ 2880 switch (n) { \ 2881 case 4: \ 2882 *p++ = *ucptr++; \ 2883 /* FALL THROUGH */ \ 2884 case 3: \ 2885 *p++ = *ucptr++; \ 2886 /* FALL THROUGH */ \ 2887 case 2: \ 2888 *p++ = *ucptr++; \ 2889 /* FALL THROUGH */ \ 2890 case 1: \ 2891 *p++ = *ucptr; \ 2892 break; \ 2893 } \ 2894 ucptr = NULL; \ 2895 } else { \ 2896 UNPARSE(p, endp, uc); \ 2897 } \ 2898 } while (0) 2899 2900 /* 2901 * Collect following decomposable code points. 2902 */ 2903 #define COLLECT_CPS(start) do { \ 2904 int _i; \ 2905 for (_i = start; _i < FDC_MAX ; _i++) { \ 2906 nx = parse(&ucx[_i], s, len); \ 2907 if (nx <= 0) \ 2908 break; \ 2909 cx = CCC(ucx[_i]); \ 2910 if (cl >= cx && cl != 228 && cx != 228)\ 2911 break; \ 2912 s += nx; \ 2913 len -= nx; \ 2914 cl = cx; \ 2915 ccx[_i] = cx; \ 2916 } \ 2917 if (_i >= FDC_MAX) { \ 2918 ret = -1; \ 2919 ucx_size = FDC_MAX; \ 2920 } else \ 2921 ucx_size = _i; \ 2922 } while (0) 2923 2924 /* 2925 * Normalize UTF-8/UTF-16BE characters to Form C and copy the result. 2926 * 2927 * TODO: Convert composition exclusions, which are never converted 2928 * from NFC,NFD,NFKC and NFKD, to Form C. 2929 */ 2930 static int 2931 archive_string_normalize_C(struct archive_string *as, const void *_p, 2932 size_t len, struct archive_string_conv *sc) 2933 { 2934 const char *s = (const char *)_p; 2935 char *p, *endp; 2936 uint32_t uc, uc2; 2937 size_t w; 2938 int always_replace, n, n2, ret = 0, spair, ts, tm; 2939 int (*parse)(uint32_t *, const char *, size_t); 2940 size_t (*unparse)(char *, size_t, uint32_t); 2941 2942 always_replace = 1; 2943 ts = 1;/* text size. */ 2944 if (sc->flag & SCONV_TO_UTF16BE) { 2945 unparse = unicode_to_utf16be; 2946 ts = 2; 2947 if (sc->flag & SCONV_FROM_UTF16BE) 2948 always_replace = 0; 2949 } else if (sc->flag & SCONV_TO_UTF16LE) { 2950 unparse = unicode_to_utf16le; 2951 ts = 2; 2952 if (sc->flag & SCONV_FROM_UTF16LE) 2953 always_replace = 0; 2954 } else if (sc->flag & SCONV_TO_UTF8) { 2955 unparse = unicode_to_utf8; 2956 if (sc->flag & SCONV_FROM_UTF8) 2957 always_replace = 0; 2958 } else { 2959 /* 2960 * This case is going to be converted to another 2961 * character-set through iconv. 2962 */ 2963 always_replace = 0; 2964 if (sc->flag & SCONV_FROM_UTF16BE) { 2965 unparse = unicode_to_utf16be; 2966 ts = 2; 2967 } else if (sc->flag & SCONV_FROM_UTF16LE) { 2968 unparse = unicode_to_utf16le; 2969 ts = 2; 2970 } else { 2971 unparse = unicode_to_utf8; 2972 } 2973 } 2974 2975 if (sc->flag & SCONV_FROM_UTF16BE) { 2976 parse = utf16be_to_unicode; 2977 tm = 1; 2978 spair = 4;/* surrogate pair size in UTF-16. */ 2979 } else if (sc->flag & SCONV_FROM_UTF16LE) { 2980 parse = utf16le_to_unicode; 2981 tm = 1; 2982 spair = 4;/* surrogate pair size in UTF-16. */ 2983 } else { 2984 parse = cesu8_to_unicode; 2985 tm = ts; 2986 spair = 6;/* surrogate pair size in UTF-8. */ 2987 } 2988 2989 if (archive_string_ensure(as, as->length + len * tm + ts) == NULL) 2990 return (-1); 2991 2992 p = as->s + as->length; 2993 endp = as->s + as->buffer_length - ts; 2994 while ((n = parse(&uc, s, len)) != 0) { 2995 const char *ucptr, *uc2ptr; 2996 2997 if (n < 0) { 2998 /* Use a replaced unicode character. */ 2999 UNPARSE(p, endp, uc); 3000 s += n*-1; 3001 len -= n*-1; 3002 ret = -1; 3003 continue; 3004 } else if (n == spair || always_replace) 3005 /* uc is converted from a surrogate pair. 3006 * this should be treated as a changed code. */ 3007 ucptr = NULL; 3008 else 3009 ucptr = s; 3010 s += n; 3011 len -= n; 3012 3013 /* Read second code point. */ 3014 while ((n2 = parse(&uc2, s, len)) > 0) { 3015 uint32_t ucx[FDC_MAX]; 3016 int ccx[FDC_MAX]; 3017 int cl, cx, i, nx, ucx_size; 3018 int LIndex,SIndex; 3019 uint32_t nfc; 3020 3021 if (n2 == spair || always_replace) 3022 /* uc2 is converted from a surrogate pair. 3023 * this should be treated as a changed code. */ 3024 uc2ptr = NULL; 3025 else 3026 uc2ptr = s; 3027 s += n2; 3028 len -= n2; 3029 3030 /* 3031 * If current second code point is out of decomposable 3032 * code points, finding compositions is unneeded. 3033 */ 3034 if (!IS_DECOMPOSABLE_BLOCK(uc2)) { 3035 WRITE_UC(); 3036 REPLACE_UC_WITH_UC2(); 3037 continue; 3038 } 3039 3040 /* 3041 * Try to combine current code points. 3042 */ 3043 /* 3044 * We have to combine Hangul characters according to 3045 * http://uniicode.org/reports/tr15/#Hangul 3046 */ 3047 if (0 <= (LIndex = uc - HC_LBASE) && 3048 LIndex < HC_LCOUNT) { 3049 /* 3050 * Hangul Composition. 3051 * 1. Two current code points are L and V. 3052 */ 3053 int VIndex = uc2 - HC_VBASE; 3054 if (0 <= VIndex && VIndex < HC_VCOUNT) { 3055 /* Make syllable of form LV. */ 3056 UPDATE_UC(HC_SBASE + 3057 (LIndex * HC_VCOUNT + VIndex) * 3058 HC_TCOUNT); 3059 } else { 3060 WRITE_UC(); 3061 REPLACE_UC_WITH_UC2(); 3062 } 3063 continue; 3064 } else if (0 <= (SIndex = uc - HC_SBASE) && 3065 SIndex < HC_SCOUNT && (SIndex % HC_TCOUNT) == 0) { 3066 /* 3067 * Hangul Composition. 3068 * 2. Two current code points are LV and T. 3069 */ 3070 int TIndex = uc2 - HC_TBASE; 3071 if (0 < TIndex && TIndex < HC_TCOUNT) { 3072 /* Make syllable of form LVT. */ 3073 UPDATE_UC(uc + TIndex); 3074 } else { 3075 WRITE_UC(); 3076 REPLACE_UC_WITH_UC2(); 3077 } 3078 continue; 3079 } else if ((nfc = get_nfc(uc, uc2)) != 0) { 3080 /* A composition to current code points 3081 * is found. */ 3082 UPDATE_UC(nfc); 3083 continue; 3084 } else if ((cl = CCC(uc2)) == 0) { 3085 /* Clearly 'uc2' the second code point is not 3086 * a decomposable code. */ 3087 WRITE_UC(); 3088 REPLACE_UC_WITH_UC2(); 3089 continue; 3090 } 3091 3092 /* 3093 * Collect following decomposable code points. 3094 */ 3095 cx = 0; 3096 ucx[0] = uc2; 3097 ccx[0] = cl; 3098 COLLECT_CPS(1); 3099 3100 /* 3101 * Find a composed code in the collected code points. 3102 */ 3103 i = 1; 3104 while (i < ucx_size) { 3105 int j; 3106 3107 if ((nfc = get_nfc(uc, ucx[i])) == 0) { 3108 i++; 3109 continue; 3110 } 3111 3112 /* 3113 * nfc is composed of uc and ucx[i]. 3114 */ 3115 UPDATE_UC(nfc); 3116 3117 /* 3118 * Remove ucx[i] by shifting 3119 * following code points. 3120 */ 3121 for (j = i; j+1 < ucx_size; j++) { 3122 ucx[j] = ucx[j+1]; 3123 ccx[j] = ccx[j+1]; 3124 } 3125 ucx_size --; 3126 3127 /* 3128 * Collect following code points blocked 3129 * by ucx[i] the removed code point. 3130 */ 3131 if (ucx_size > 0 && i == ucx_size && 3132 nx > 0 && cx == cl) { 3133 cl = ccx[ucx_size-1]; 3134 COLLECT_CPS(ucx_size); 3135 } 3136 /* 3137 * Restart finding a composed code with 3138 * the updated uc from the top of the 3139 * collected code points. 3140 */ 3141 i = 0; 3142 } 3143 3144 /* 3145 * Apparently the current code points are not 3146 * decomposed characters or already composed. 3147 */ 3148 WRITE_UC(); 3149 for (i = 0; i < ucx_size; i++) 3150 UNPARSE(p, endp, ucx[i]); 3151 3152 /* 3153 * Flush out remaining canonical combining characters. 3154 */ 3155 if (nx > 0 && cx == cl && len > 0) { 3156 while ((nx = parse(&ucx[0], s, len)) 3157 > 0) { 3158 cx = CCC(ucx[0]); 3159 if (cl > cx) 3160 break; 3161 s += nx; 3162 len -= nx; 3163 cl = cx; 3164 UNPARSE(p, endp, ucx[0]); 3165 } 3166 } 3167 break; 3168 } 3169 if (n2 < 0) { 3170 WRITE_UC(); 3171 /* Use a replaced unicode character. */ 3172 UNPARSE(p, endp, uc2); 3173 s += n2*-1; 3174 len -= n2*-1; 3175 ret = -1; 3176 continue; 3177 } else if (n2 == 0) { 3178 WRITE_UC(); 3179 break; 3180 } 3181 } 3182 as->length = p - as->s; 3183 as->s[as->length] = '\0'; 3184 if (ts == 2) 3185 as->s[as->length+1] = '\0'; 3186 return (ret); 3187 } 3188 3189 static int 3190 get_nfd(uint32_t *cp1, uint32_t *cp2, uint32_t uc) 3191 { 3192 int t, b; 3193 3194 /* 3195 * These are not converted to NFD on Mac OS. 3196 */ 3197 if ((uc >= 0x2000 && uc <= 0x2FFF) || 3198 (uc >= 0xF900 && uc <= 0xFAFF) || 3199 (uc >= 0x2F800 && uc <= 0x2FAFF)) 3200 return (0); 3201 /* 3202 * Those code points are not converted to NFD on Mac OS. 3203 * I do not know the reason because it is undocumented. 3204 * NFC NFD 3205 * 1109A ==> 11099 110BA 3206 * 1109C ==> 1109B 110BA 3207 * 110AB ==> 110A5 110BA 3208 */ 3209 if (uc == 0x1109A || uc == 0x1109C || uc == 0x110AB) 3210 return (0); 3211 3212 t = 0; 3213 b = sizeof(u_decomposition_table)/sizeof(u_decomposition_table[0]) -1; 3214 while (b >= t) { 3215 int m = (t + b) / 2; 3216 if (u_decomposition_table[m].nfc < uc) 3217 t = m + 1; 3218 else if (u_decomposition_table[m].nfc > uc) 3219 b = m - 1; 3220 else { 3221 *cp1 = u_decomposition_table[m].cp1; 3222 *cp2 = u_decomposition_table[m].cp2; 3223 return (1); 3224 } 3225 } 3226 return (0); 3227 } 3228 3229 #define REPLACE_UC_WITH(cp) do { \ 3230 uc = cp; \ 3231 ucptr = NULL; \ 3232 } while (0) 3233 3234 /* 3235 * Normalize UTF-8 characters to Form D and copy the result. 3236 */ 3237 static int 3238 archive_string_normalize_D(struct archive_string *as, const void *_p, 3239 size_t len, struct archive_string_conv *sc) 3240 { 3241 const char *s = (const char *)_p; 3242 char *p, *endp; 3243 uint32_t uc, uc2; 3244 size_t w; 3245 int always_replace, n, n2, ret = 0, spair, ts, tm; 3246 int (*parse)(uint32_t *, const char *, size_t); 3247 size_t (*unparse)(char *, size_t, uint32_t); 3248 3249 always_replace = 1; 3250 ts = 1;/* text size. */ 3251 if (sc->flag & SCONV_TO_UTF16BE) { 3252 unparse = unicode_to_utf16be; 3253 ts = 2; 3254 if (sc->flag & SCONV_FROM_UTF16BE) 3255 always_replace = 0; 3256 } else if (sc->flag & SCONV_TO_UTF16LE) { 3257 unparse = unicode_to_utf16le; 3258 ts = 2; 3259 if (sc->flag & SCONV_FROM_UTF16LE) 3260 always_replace = 0; 3261 } else if (sc->flag & SCONV_TO_UTF8) { 3262 unparse = unicode_to_utf8; 3263 if (sc->flag & SCONV_FROM_UTF8) 3264 always_replace = 0; 3265 } else { 3266 /* 3267 * This case is going to be converted to another 3268 * character-set through iconv. 3269 */ 3270 always_replace = 0; 3271 if (sc->flag & SCONV_FROM_UTF16BE) { 3272 unparse = unicode_to_utf16be; 3273 ts = 2; 3274 } else if (sc->flag & SCONV_FROM_UTF16LE) { 3275 unparse = unicode_to_utf16le; 3276 ts = 2; 3277 } else { 3278 unparse = unicode_to_utf8; 3279 } 3280 } 3281 3282 if (sc->flag & SCONV_FROM_UTF16BE) { 3283 parse = utf16be_to_unicode; 3284 tm = 1; 3285 spair = 4;/* surrogate pair size in UTF-16. */ 3286 } else if (sc->flag & SCONV_FROM_UTF16LE) { 3287 parse = utf16le_to_unicode; 3288 tm = 1; 3289 spair = 4;/* surrogate pair size in UTF-16. */ 3290 } else { 3291 parse = cesu8_to_unicode; 3292 tm = ts; 3293 spair = 6;/* surrogate pair size in UTF-8. */ 3294 } 3295 3296 if (archive_string_ensure(as, as->length + len * tm + ts) == NULL) 3297 return (-1); 3298 3299 p = as->s + as->length; 3300 endp = as->s + as->buffer_length - ts; 3301 while ((n = parse(&uc, s, len)) != 0) { 3302 const char *ucptr; 3303 uint32_t cp1, cp2; 3304 int SIndex; 3305 struct { 3306 uint32_t uc; 3307 int ccc; 3308 } fdc[FDC_MAX]; 3309 int fdi, fdj; 3310 int ccc; 3311 3312 check_first_code: 3313 if (n < 0) { 3314 /* Use a replaced unicode character. */ 3315 UNPARSE(p, endp, uc); 3316 s += n*-1; 3317 len -= n*-1; 3318 ret = -1; 3319 continue; 3320 } else if (n == spair || always_replace) 3321 /* uc is converted from a surrogate pair. 3322 * this should be treated as a changed code. */ 3323 ucptr = NULL; 3324 else 3325 ucptr = s; 3326 s += n; 3327 len -= n; 3328 3329 /* Hangul Decomposition. */ 3330 if ((SIndex = uc - HC_SBASE) >= 0 && SIndex < HC_SCOUNT) { 3331 int L = HC_LBASE + SIndex / HC_NCOUNT; 3332 int V = HC_VBASE + (SIndex % HC_NCOUNT) / HC_TCOUNT; 3333 int T = HC_TBASE + SIndex % HC_TCOUNT; 3334 3335 REPLACE_UC_WITH(L); 3336 WRITE_UC(); 3337 REPLACE_UC_WITH(V); 3338 WRITE_UC(); 3339 if (T != HC_TBASE) { 3340 REPLACE_UC_WITH(T); 3341 WRITE_UC(); 3342 } 3343 continue; 3344 } 3345 if (IS_DECOMPOSABLE_BLOCK(uc) && CCC(uc) != 0) { 3346 WRITE_UC(); 3347 continue; 3348 } 3349 3350 fdi = 0; 3351 while (get_nfd(&cp1, &cp2, uc) && fdi < FDC_MAX) { 3352 int k; 3353 3354 for (k = fdi; k > 0; k--) 3355 fdc[k] = fdc[k-1]; 3356 fdc[0].ccc = CCC(cp2); 3357 fdc[0].uc = cp2; 3358 fdi++; 3359 REPLACE_UC_WITH(cp1); 3360 } 3361 3362 /* Read following code points. */ 3363 while ((n2 = parse(&uc2, s, len)) > 0 && 3364 (ccc = CCC(uc2)) != 0 && fdi < FDC_MAX) { 3365 int j, k; 3366 3367 s += n2; 3368 len -= n2; 3369 for (j = 0; j < fdi; j++) { 3370 if (fdc[j].ccc > ccc) 3371 break; 3372 } 3373 if (j < fdi) { 3374 for (k = fdi; k > j; k--) 3375 fdc[k] = fdc[k-1]; 3376 fdc[j].ccc = ccc; 3377 fdc[j].uc = uc2; 3378 } else { 3379 fdc[fdi].ccc = ccc; 3380 fdc[fdi].uc = uc2; 3381 } 3382 fdi++; 3383 } 3384 3385 WRITE_UC(); 3386 for (fdj = 0; fdj < fdi; fdj++) { 3387 REPLACE_UC_WITH(fdc[fdj].uc); 3388 WRITE_UC(); 3389 } 3390 3391 if (n2 == 0) 3392 break; 3393 REPLACE_UC_WITH(uc2); 3394 n = n2; 3395 goto check_first_code; 3396 } 3397 as->length = p - as->s; 3398 as->s[as->length] = '\0'; 3399 if (ts == 2) 3400 as->s[as->length+1] = '\0'; 3401 return (ret); 3402 } 3403 3404 /* 3405 * libarchive 2.x made incorrect UTF-8 strings in the wrong assumption 3406 * that WCS is Unicode. It is true for several platforms but some are false. 3407 * And then people who did not use UTF-8 locale on the non Unicode WCS 3408 * platform and made a tar file with libarchive(mostly bsdtar) 2.x. Those 3409 * now cannot get right filename from libarchive 3.x and later since we 3410 * fixed the wrong assumption and it is incompatible to older its versions. 3411 * So we provide special option, "compat-2x.x", for resolving it. 3412 * That option enable the string conversion of libarchive 2.x. 3413 * 3414 * Translates the wrong UTF-8 string made by libarchive 2.x into current 3415 * locale character set and appends to the archive_string. 3416 * Note: returns -1 if conversion fails. 3417 */ 3418 static int 3419 strncat_from_utf8_libarchive2(struct archive_string *as, 3420 const void *_p, size_t len, struct archive_string_conv *sc) 3421 { 3422 const char *s; 3423 int n; 3424 char *p; 3425 char *end; 3426 uint32_t unicode; 3427 #if HAVE_WCRTOMB 3428 mbstate_t shift_state; 3429 3430 memset(&shift_state, 0, sizeof(shift_state)); 3431 #else 3432 /* Clear the shift state before starting. */ 3433 wctomb(NULL, L'\0'); 3434 #endif 3435 (void)sc; /* UNUSED */ 3436 /* 3437 * Allocate buffer for MBS. 3438 * We need this allocation here since it is possible that 3439 * as->s is still NULL. 3440 */ 3441 if (archive_string_ensure(as, as->length + len + 1) == NULL) 3442 return (-1); 3443 3444 s = (const char *)_p; 3445 p = as->s + as->length; 3446 end = as->s + as->buffer_length - MB_CUR_MAX -1; 3447 while ((n = _utf8_to_unicode(&unicode, s, len)) != 0) { 3448 wchar_t wc; 3449 3450 if (p >= end) { 3451 as->length = p - as->s; 3452 /* Re-allocate buffer for MBS. */ 3453 if (archive_string_ensure(as, 3454 as->length + max(len * 2, 3455 (size_t)MB_CUR_MAX) + 1) == NULL) 3456 return (-1); 3457 p = as->s + as->length; 3458 end = as->s + as->buffer_length - MB_CUR_MAX -1; 3459 } 3460 3461 /* 3462 * As libarchive 2.x, translates the UTF-8 characters into 3463 * wide-characters in the assumption that WCS is Unicode. 3464 */ 3465 if (n < 0) { 3466 n *= -1; 3467 wc = L'?'; 3468 } else 3469 wc = (wchar_t)unicode; 3470 3471 s += n; 3472 len -= n; 3473 /* 3474 * Translates the wide-character into the current locale MBS. 3475 */ 3476 #if HAVE_WCRTOMB 3477 n = (int)wcrtomb(p, wc, &shift_state); 3478 #else 3479 n = (int)wctomb(p, wc); 3480 #endif 3481 if (n == -1) 3482 return (-1); 3483 p += n; 3484 } 3485 as->length = p - as->s; 3486 as->s[as->length] = '\0'; 3487 return (0); 3488 } 3489 3490 3491 /* 3492 * Conversion functions between current locale dependent MBS and UTF-16BE. 3493 * strncat_from_utf16be() : UTF-16BE --> MBS 3494 * strncat_to_utf16be() : MBS --> UTF16BE 3495 */ 3496 3497 #if defined(_WIN32) && !defined(__CYGWIN__) 3498 3499 /* 3500 * Convert a UTF-16BE/LE string to current locale and copy the result. 3501 * Return -1 if conversion fails. 3502 */ 3503 static int 3504 win_strncat_from_utf16(struct archive_string *as, const void *_p, size_t bytes, 3505 struct archive_string_conv *sc, int be) 3506 { 3507 struct archive_string tmp; 3508 const char *u16; 3509 int ll; 3510 BOOL defchar; 3511 char *mbs; 3512 size_t mbs_size, b; 3513 int ret = 0; 3514 3515 bytes &= ~1; 3516 if (archive_string_ensure(as, as->length + bytes +1) == NULL) 3517 return (-1); 3518 3519 mbs = as->s + as->length; 3520 mbs_size = as->buffer_length - as->length -1; 3521 3522 if (sc->to_cp == CP_C_LOCALE) { 3523 /* 3524 * "C" locale special process. 3525 */ 3526 u16 = _p; 3527 ll = 0; 3528 for (b = 0; b < bytes; b += 2) { 3529 uint16_t val; 3530 if (be) 3531 val = archive_be16dec(u16+b); 3532 else 3533 val = archive_le16dec(u16+b); 3534 if (val > 255) { 3535 *mbs++ = '?'; 3536 ret = -1; 3537 } else 3538 *mbs++ = (char)(val&0xff); 3539 ll++; 3540 } 3541 as->length += ll; 3542 as->s[as->length] = '\0'; 3543 return (ret); 3544 } 3545 3546 archive_string_init(&tmp); 3547 if (be) { 3548 if (is_big_endian()) { 3549 u16 = _p; 3550 } else { 3551 if (archive_string_ensure(&tmp, bytes+2) == NULL) 3552 return (-1); 3553 memcpy(tmp.s, _p, bytes); 3554 for (b = 0; b < bytes; b += 2) { 3555 uint16_t val = archive_be16dec(tmp.s+b); 3556 archive_le16enc(tmp.s+b, val); 3557 } 3558 u16 = tmp.s; 3559 } 3560 } else { 3561 if (!is_big_endian()) { 3562 u16 = _p; 3563 } else { 3564 if (archive_string_ensure(&tmp, bytes+2) == NULL) 3565 return (-1); 3566 memcpy(tmp.s, _p, bytes); 3567 for (b = 0; b < bytes; b += 2) { 3568 uint16_t val = archive_le16dec(tmp.s+b); 3569 archive_be16enc(tmp.s+b, val); 3570 } 3571 u16 = tmp.s; 3572 } 3573 } 3574 3575 do { 3576 defchar = 0; 3577 ll = WideCharToMultiByte(sc->to_cp, 0, 3578 (LPCWSTR)u16, (int)bytes>>1, mbs, (int)mbs_size, 3579 NULL, &defchar); 3580 /* Exit loop if we succeeded */ 3581 if (ll != 0 || 3582 GetLastError() != ERROR_INSUFFICIENT_BUFFER) { 3583 break; 3584 } 3585 /* Else expand buffer and loop to try again. */ 3586 ll = WideCharToMultiByte(sc->to_cp, 0, 3587 (LPCWSTR)u16, (int)bytes, NULL, 0, NULL, NULL); 3588 if (archive_string_ensure(as, ll +1) == NULL) 3589 return (-1); 3590 mbs = as->s + as->length; 3591 mbs_size = as->buffer_length - as->length -1; 3592 } while (1); 3593 archive_string_free(&tmp); 3594 as->length += ll; 3595 as->s[as->length] = '\0'; 3596 if (ll == 0 || defchar) 3597 ret = -1; 3598 return (ret); 3599 } 3600 3601 static int 3602 win_strncat_from_utf16be(struct archive_string *as, const void *_p, 3603 size_t bytes, struct archive_string_conv *sc) 3604 { 3605 return (win_strncat_from_utf16(as, _p, bytes, sc, 1)); 3606 } 3607 3608 static int 3609 win_strncat_from_utf16le(struct archive_string *as, const void *_p, 3610 size_t bytes, struct archive_string_conv *sc) 3611 { 3612 return (win_strncat_from_utf16(as, _p, bytes, sc, 0)); 3613 } 3614 3615 static int 3616 is_big_endian(void) 3617 { 3618 uint16_t d = 1; 3619 3620 return (archive_be16dec(&d) == 1); 3621 } 3622 3623 /* 3624 * Convert a current locale string to UTF-16BE/LE and copy the result. 3625 * Return -1 if conversion fails. 3626 */ 3627 static int 3628 win_strncat_to_utf16(struct archive_string *as16, const void *_p, 3629 size_t length, struct archive_string_conv *sc, int bigendian) 3630 { 3631 const char *s = (const char *)_p; 3632 char *u16; 3633 size_t count, avail; 3634 3635 if (archive_string_ensure(as16, 3636 as16->length + (length + 1) * 2) == NULL) 3637 return (-1); 3638 3639 u16 = as16->s + as16->length; 3640 avail = as16->buffer_length - 2; 3641 if (sc->from_cp == CP_C_LOCALE) { 3642 /* 3643 * "C" locale special process. 3644 */ 3645 count = 0; 3646 while (count < length && *s) { 3647 if (bigendian) 3648 archive_be16enc(u16, *s); 3649 else 3650 archive_le16enc(u16, *s); 3651 u16 += 2; 3652 s++; 3653 count++; 3654 } 3655 as16->length += count << 1; 3656 as16->s[as16->length] = 0; 3657 as16->s[as16->length+1] = 0; 3658 return (0); 3659 } 3660 do { 3661 count = MultiByteToWideChar(sc->from_cp, 3662 MB_PRECOMPOSED, s, (int)length, (LPWSTR)u16, (int)avail>>1); 3663 /* Exit loop if we succeeded */ 3664 if (count != 0 || 3665 GetLastError() != ERROR_INSUFFICIENT_BUFFER) { 3666 break; 3667 } 3668 /* Expand buffer and try again */ 3669 count = MultiByteToWideChar(sc->from_cp, 3670 MB_PRECOMPOSED, s, (int)length, NULL, 0); 3671 if (archive_string_ensure(as16, (count +1) * 2) 3672 == NULL) 3673 return (-1); 3674 u16 = as16->s + as16->length; 3675 avail = as16->buffer_length - 2; 3676 } while (1); 3677 as16->length += count * 2; 3678 as16->s[as16->length] = 0; 3679 as16->s[as16->length+1] = 0; 3680 if (count == 0) 3681 return (-1); 3682 3683 if (is_big_endian()) { 3684 if (!bigendian) { 3685 while (count > 0) { 3686 uint16_t v = archive_be16dec(u16); 3687 archive_le16enc(u16, v); 3688 u16 += 2; 3689 count--; 3690 } 3691 } 3692 } else { 3693 if (bigendian) { 3694 while (count > 0) { 3695 uint16_t v = archive_le16dec(u16); 3696 archive_be16enc(u16, v); 3697 u16 += 2; 3698 count--; 3699 } 3700 } 3701 } 3702 return (0); 3703 } 3704 3705 static int 3706 win_strncat_to_utf16be(struct archive_string *as16, const void *_p, 3707 size_t length, struct archive_string_conv *sc) 3708 { 3709 return (win_strncat_to_utf16(as16, _p, length, sc, 1)); 3710 } 3711 3712 static int 3713 win_strncat_to_utf16le(struct archive_string *as16, const void *_p, 3714 size_t length, struct archive_string_conv *sc) 3715 { 3716 return (win_strncat_to_utf16(as16, _p, length, sc, 0)); 3717 } 3718 3719 #endif /* _WIN32 && !__CYGWIN__ */ 3720 3721 /* 3722 * Do the best effort for conversions. 3723 * We cannot handle UTF-16BE character-set without such iconv, 3724 * but there is a chance if a string consists just ASCII code or 3725 * a current locale is UTF-8. 3726 */ 3727 3728 /* 3729 * Convert a UTF-16BE string to current locale and copy the result. 3730 * Return -1 if conversion fails. 3731 */ 3732 static int 3733 best_effort_strncat_from_utf16(struct archive_string *as, const void *_p, 3734 size_t bytes, struct archive_string_conv *sc, int be) 3735 { 3736 const char *utf16 = (const char *)_p; 3737 char *mbs; 3738 uint32_t uc; 3739 int n, ret; 3740 3741 (void)sc; /* UNUSED */ 3742 /* 3743 * Other case, we should do the best effort. 3744 * If all character are ASCII(<0x7f), we can convert it. 3745 * if not , we set a alternative character and return -1. 3746 */ 3747 ret = 0; 3748 if (archive_string_ensure(as, as->length + bytes +1) == NULL) 3749 return (-1); 3750 mbs = as->s + as->length; 3751 3752 while ((n = utf16_to_unicode(&uc, utf16, bytes, be)) != 0) { 3753 if (n < 0) { 3754 n *= -1; 3755 ret = -1; 3756 } 3757 bytes -= n; 3758 utf16 += n; 3759 3760 if (uc > 127) { 3761 /* We cannot handle it. */ 3762 *mbs++ = '?'; 3763 ret = -1; 3764 } else 3765 *mbs++ = (char)uc; 3766 } 3767 as->length = mbs - as->s; 3768 as->s[as->length] = '\0'; 3769 return (ret); 3770 } 3771 3772 static int 3773 best_effort_strncat_from_utf16be(struct archive_string *as, const void *_p, 3774 size_t bytes, struct archive_string_conv *sc) 3775 { 3776 return (best_effort_strncat_from_utf16(as, _p, bytes, sc, 1)); 3777 } 3778 3779 static int 3780 best_effort_strncat_from_utf16le(struct archive_string *as, const void *_p, 3781 size_t bytes, struct archive_string_conv *sc) 3782 { 3783 return (best_effort_strncat_from_utf16(as, _p, bytes, sc, 0)); 3784 } 3785 3786 /* 3787 * Convert a current locale string to UTF-16BE/LE and copy the result. 3788 * Return -1 if conversion fails. 3789 */ 3790 static int 3791 best_effort_strncat_to_utf16(struct archive_string *as16, const void *_p, 3792 size_t length, struct archive_string_conv *sc, int bigendian) 3793 { 3794 const char *s = (const char *)_p; 3795 char *utf16; 3796 size_t remaining; 3797 int ret; 3798 3799 (void)sc; /* UNUSED */ 3800 /* 3801 * Other case, we should do the best effort. 3802 * If all character are ASCII(<0x7f), we can convert it. 3803 * if not , we set a alternative character and return -1. 3804 */ 3805 ret = 0; 3806 remaining = length; 3807 3808 if (archive_string_ensure(as16, 3809 as16->length + (length + 1) * 2) == NULL) 3810 return (-1); 3811 3812 utf16 = as16->s + as16->length; 3813 while (remaining--) { 3814 unsigned c = *s++; 3815 if (c > 127) { 3816 /* We cannot handle it. */ 3817 c = UNICODE_R_CHAR; 3818 ret = -1; 3819 } 3820 if (bigendian) 3821 archive_be16enc(utf16, c); 3822 else 3823 archive_le16enc(utf16, c); 3824 utf16 += 2; 3825 } 3826 as16->length = utf16 - as16->s; 3827 as16->s[as16->length] = 0; 3828 as16->s[as16->length+1] = 0; 3829 return (ret); 3830 } 3831 3832 static int 3833 best_effort_strncat_to_utf16be(struct archive_string *as16, const void *_p, 3834 size_t length, struct archive_string_conv *sc) 3835 { 3836 return (best_effort_strncat_to_utf16(as16, _p, length, sc, 1)); 3837 } 3838 3839 static int 3840 best_effort_strncat_to_utf16le(struct archive_string *as16, const void *_p, 3841 size_t length, struct archive_string_conv *sc) 3842 { 3843 return (best_effort_strncat_to_utf16(as16, _p, length, sc, 0)); 3844 } 3845 3846 3847 /* 3848 * Multistring operations. 3849 */ 3850 3851 void 3852 archive_mstring_clean(struct archive_mstring *aes) 3853 { 3854 archive_wstring_free(&(aes->aes_wcs)); 3855 archive_string_free(&(aes->aes_mbs)); 3856 archive_string_free(&(aes->aes_utf8)); 3857 archive_string_free(&(aes->aes_mbs_in_locale)); 3858 aes->aes_set = 0; 3859 } 3860 3861 void 3862 archive_mstring_copy(struct archive_mstring *dest, struct archive_mstring *src) 3863 { 3864 dest->aes_set = src->aes_set; 3865 archive_string_copy(&(dest->aes_mbs), &(src->aes_mbs)); 3866 archive_string_copy(&(dest->aes_utf8), &(src->aes_utf8)); 3867 archive_wstring_copy(&(dest->aes_wcs), &(src->aes_wcs)); 3868 } 3869 3870 int 3871 archive_mstring_get_utf8(struct archive *a, struct archive_mstring *aes, 3872 const char **p) 3873 { 3874 struct archive_string_conv *sc; 3875 int r; 3876 3877 /* If we already have a UTF8 form, return that immediately. */ 3878 if (aes->aes_set & AES_SET_UTF8) { 3879 *p = aes->aes_utf8.s; 3880 return (0); 3881 } 3882 3883 *p = NULL; 3884 /* Try converting WCS to MBS first if MBS does not exist yet. */ 3885 if ((aes->aes_set & AES_SET_MBS) == 0) { 3886 const char *pm; /* unused */ 3887 archive_mstring_get_mbs(a, aes, &pm); /* ignore errors, we'll handle it later */ 3888 } 3889 if (aes->aes_set & AES_SET_MBS) { 3890 sc = archive_string_conversion_to_charset(a, "UTF-8", 1); 3891 if (sc == NULL) 3892 return (-1);/* Couldn't allocate memory for sc. */ 3893 r = archive_strncpy_l(&(aes->aes_utf8), aes->aes_mbs.s, 3894 aes->aes_mbs.length, sc); 3895 if (a == NULL) 3896 free_sconv_object(sc); 3897 if (r == 0) { 3898 aes->aes_set |= AES_SET_UTF8; 3899 *p = aes->aes_utf8.s; 3900 return (0);/* success. */ 3901 } else 3902 return (-1);/* failure. */ 3903 } 3904 return (0);/* success. */ 3905 } 3906 3907 int 3908 archive_mstring_get_mbs(struct archive *a, struct archive_mstring *aes, 3909 const char **p) 3910 { 3911 struct archive_string_conv *sc; 3912 int r, ret = 0; 3913 3914 /* If we already have an MBS form, return that immediately. */ 3915 if (aes->aes_set & AES_SET_MBS) { 3916 *p = aes->aes_mbs.s; 3917 return (ret); 3918 } 3919 3920 *p = NULL; 3921 /* If there's a WCS form, try converting with the native locale. */ 3922 if (aes->aes_set & AES_SET_WCS) { 3923 archive_string_empty(&(aes->aes_mbs)); 3924 r = archive_string_append_from_wcs(&(aes->aes_mbs), 3925 aes->aes_wcs.s, aes->aes_wcs.length); 3926 *p = aes->aes_mbs.s; 3927 if (r == 0) { 3928 aes->aes_set |= AES_SET_MBS; 3929 return (ret); 3930 } else 3931 ret = -1; 3932 } 3933 3934 /* If there's a UTF-8 form, try converting with the native locale. */ 3935 if (aes->aes_set & AES_SET_UTF8) { 3936 archive_string_empty(&(aes->aes_mbs)); 3937 sc = archive_string_conversion_from_charset(a, "UTF-8", 1); 3938 if (sc == NULL) 3939 return (-1);/* Couldn't allocate memory for sc. */ 3940 r = archive_strncpy_l(&(aes->aes_mbs), 3941 aes->aes_utf8.s, aes->aes_utf8.length, sc); 3942 if (a == NULL) 3943 free_sconv_object(sc); 3944 *p = aes->aes_mbs.s; 3945 if (r == 0) { 3946 aes->aes_set |= AES_SET_MBS; 3947 ret = 0;/* success; overwrite previous error. */ 3948 } else 3949 ret = -1;/* failure. */ 3950 } 3951 return (ret); 3952 } 3953 3954 int 3955 archive_mstring_get_wcs(struct archive *a, struct archive_mstring *aes, 3956 const wchar_t **wp) 3957 { 3958 int r, ret = 0; 3959 3960 (void)a;/* UNUSED */ 3961 /* Return WCS form if we already have it. */ 3962 if (aes->aes_set & AES_SET_WCS) { 3963 *wp = aes->aes_wcs.s; 3964 return (ret); 3965 } 3966 3967 *wp = NULL; 3968 /* Try converting UTF8 to MBS first if MBS does not exist yet. */ 3969 if ((aes->aes_set & AES_SET_MBS) == 0) { 3970 const char *p; /* unused */ 3971 archive_mstring_get_mbs(a, aes, &p); /* ignore errors, we'll handle it later */ 3972 } 3973 /* Try converting MBS to WCS using native locale. */ 3974 if (aes->aes_set & AES_SET_MBS) { 3975 archive_wstring_empty(&(aes->aes_wcs)); 3976 r = archive_wstring_append_from_mbs(&(aes->aes_wcs), 3977 aes->aes_mbs.s, aes->aes_mbs.length); 3978 if (r == 0) { 3979 aes->aes_set |= AES_SET_WCS; 3980 *wp = aes->aes_wcs.s; 3981 } else 3982 ret = -1;/* failure. */ 3983 } 3984 return (ret); 3985 } 3986 3987 int 3988 archive_mstring_get_mbs_l(struct archive *a, struct archive_mstring *aes, 3989 const char **p, size_t *length, struct archive_string_conv *sc) 3990 { 3991 int r, ret = 0; 3992 3993 (void)r; /* UNUSED */ 3994 #if defined(_WIN32) && !defined(__CYGWIN__) 3995 /* 3996 * Internationalization programming on Windows must use Wide 3997 * characters because Windows platform cannot make locale UTF-8. 3998 */ 3999 if (sc != NULL && (aes->aes_set & AES_SET_WCS) != 0) { 4000 archive_string_empty(&(aes->aes_mbs_in_locale)); 4001 r = archive_string_append_from_wcs_in_codepage( 4002 &(aes->aes_mbs_in_locale), aes->aes_wcs.s, 4003 aes->aes_wcs.length, sc); 4004 if (r == 0) { 4005 *p = aes->aes_mbs_in_locale.s; 4006 if (length != NULL) 4007 *length = aes->aes_mbs_in_locale.length; 4008 return (0); 4009 } else if (errno == ENOMEM) 4010 return (-1); 4011 else 4012 ret = -1; 4013 } 4014 #endif 4015 4016 /* If there is not an MBS form but there is a WCS or UTF8 form, try converting 4017 * with the native locale to be used for translating it to specified 4018 * character-set. */ 4019 if ((aes->aes_set & AES_SET_MBS) == 0) { 4020 const char *pm; /* unused */ 4021 archive_mstring_get_mbs(a, aes, &pm); /* ignore errors, we'll handle it later */ 4022 } 4023 /* If we already have an MBS form, use it to be translated to 4024 * specified character-set. */ 4025 if (aes->aes_set & AES_SET_MBS) { 4026 if (sc == NULL) { 4027 /* Conversion is unneeded. */ 4028 *p = aes->aes_mbs.s; 4029 if (length != NULL) 4030 *length = aes->aes_mbs.length; 4031 return (0); 4032 } 4033 ret = archive_strncpy_l(&(aes->aes_mbs_in_locale), 4034 aes->aes_mbs.s, aes->aes_mbs.length, sc); 4035 *p = aes->aes_mbs_in_locale.s; 4036 if (length != NULL) 4037 *length = aes->aes_mbs_in_locale.length; 4038 } else { 4039 *p = NULL; 4040 if (length != NULL) 4041 *length = 0; 4042 } 4043 return (ret); 4044 } 4045 4046 int 4047 archive_mstring_copy_mbs(struct archive_mstring *aes, const char *mbs) 4048 { 4049 if (mbs == NULL) { 4050 aes->aes_set = 0; 4051 return (0); 4052 } 4053 return (archive_mstring_copy_mbs_len(aes, mbs, strlen(mbs))); 4054 } 4055 4056 int 4057 archive_mstring_copy_mbs_len(struct archive_mstring *aes, const char *mbs, 4058 size_t len) 4059 { 4060 if (mbs == NULL) { 4061 aes->aes_set = 0; 4062 return (0); 4063 } 4064 aes->aes_set = AES_SET_MBS; /* Only MBS form is set now. */ 4065 archive_strncpy(&(aes->aes_mbs), mbs, len); 4066 archive_string_empty(&(aes->aes_utf8)); 4067 archive_wstring_empty(&(aes->aes_wcs)); 4068 return (0); 4069 } 4070 4071 int 4072 archive_mstring_copy_wcs(struct archive_mstring *aes, const wchar_t *wcs) 4073 { 4074 return archive_mstring_copy_wcs_len(aes, wcs, 4075 wcs == NULL ? 0 : wcslen(wcs)); 4076 } 4077 4078 int 4079 archive_mstring_copy_utf8(struct archive_mstring *aes, const char *utf8) 4080 { 4081 if (utf8 == NULL) { 4082 aes->aes_set = 0; 4083 return (0); 4084 } 4085 aes->aes_set = AES_SET_UTF8; 4086 archive_string_empty(&(aes->aes_mbs)); 4087 archive_string_empty(&(aes->aes_wcs)); 4088 archive_strncpy(&(aes->aes_utf8), utf8, strlen(utf8)); 4089 return (int)strlen(utf8); 4090 } 4091 4092 int 4093 archive_mstring_copy_wcs_len(struct archive_mstring *aes, const wchar_t *wcs, 4094 size_t len) 4095 { 4096 if (wcs == NULL) { 4097 aes->aes_set = 0; 4098 return (0); 4099 } 4100 aes->aes_set = AES_SET_WCS; /* Only WCS form set. */ 4101 archive_string_empty(&(aes->aes_mbs)); 4102 archive_string_empty(&(aes->aes_utf8)); 4103 archive_wstrncpy(&(aes->aes_wcs), wcs, len); 4104 return (0); 4105 } 4106 4107 int 4108 archive_mstring_copy_mbs_len_l(struct archive_mstring *aes, 4109 const char *mbs, size_t len, struct archive_string_conv *sc) 4110 { 4111 int r; 4112 4113 if (mbs == NULL) { 4114 aes->aes_set = 0; 4115 return (0); 4116 } 4117 archive_string_empty(&(aes->aes_mbs)); 4118 archive_wstring_empty(&(aes->aes_wcs)); 4119 archive_string_empty(&(aes->aes_utf8)); 4120 #if defined(_WIN32) && !defined(__CYGWIN__) 4121 /* 4122 * Internationalization programming on Windows must use Wide 4123 * characters because Windows platform cannot make locale UTF-8. 4124 */ 4125 if (sc == NULL) { 4126 if (archive_string_append(&(aes->aes_mbs), 4127 mbs, mbsnbytes(mbs, len)) == NULL) { 4128 aes->aes_set = 0; 4129 r = -1; 4130 } else { 4131 aes->aes_set = AES_SET_MBS; 4132 r = 0; 4133 } 4134 #if defined(HAVE_ICONV) 4135 } else if (sc != NULL && sc->cd_w != (iconv_t)-1) { 4136 /* 4137 * This case happens only when MultiByteToWideChar() cannot 4138 * handle sc->from_cp, and we have to iconv in order to 4139 * translate character-set to wchar_t,UTF-16. 4140 */ 4141 iconv_t cd = sc->cd; 4142 unsigned from_cp; 4143 int flag; 4144 4145 /* 4146 * Translate multi-bytes from some character-set to UTF-8. 4147 */ 4148 sc->cd = sc->cd_w; 4149 r = archive_strncpy_l(&(aes->aes_utf8), mbs, len, sc); 4150 sc->cd = cd; 4151 if (r != 0) { 4152 aes->aes_set = 0; 4153 return (r); 4154 } 4155 aes->aes_set = AES_SET_UTF8; 4156 4157 /* 4158 * Append the UTF-8 string into wstring. 4159 */ 4160 flag = sc->flag; 4161 sc->flag &= ~(SCONV_NORMALIZATION_C 4162 | SCONV_TO_UTF16| SCONV_FROM_UTF16); 4163 from_cp = sc->from_cp; 4164 sc->from_cp = CP_UTF8; 4165 r = archive_wstring_append_from_mbs_in_codepage(&(aes->aes_wcs), 4166 aes->aes_utf8.s, aes->aes_utf8.length, sc); 4167 sc->flag = flag; 4168 sc->from_cp = from_cp; 4169 if (r == 0) 4170 aes->aes_set |= AES_SET_WCS; 4171 #endif 4172 } else { 4173 r = archive_wstring_append_from_mbs_in_codepage( 4174 &(aes->aes_wcs), mbs, len, sc); 4175 if (r == 0) 4176 aes->aes_set = AES_SET_WCS; 4177 else 4178 aes->aes_set = 0; 4179 } 4180 #else 4181 r = archive_strncpy_l(&(aes->aes_mbs), mbs, len, sc); 4182 if (r == 0) 4183 aes->aes_set = AES_SET_MBS; /* Only MBS form is set now. */ 4184 else 4185 aes->aes_set = 0; 4186 #endif 4187 return (r); 4188 } 4189 4190 /* 4191 * The 'update' form tries to proactively update all forms of 4192 * this string (WCS and MBS) and returns an error if any of 4193 * them fail. This is used by the 'pax' handler, for instance, 4194 * to detect and report character-conversion failures early while 4195 * still allowing clients to get potentially useful values from 4196 * the more tolerant lazy conversions. (get_mbs and get_wcs will 4197 * strive to give the user something useful, so you can get hopefully 4198 * usable values even if some of the character conversions are failing.) 4199 */ 4200 int 4201 archive_mstring_update_utf8(struct archive *a, struct archive_mstring *aes, 4202 const char *utf8) 4203 { 4204 struct archive_string_conv *sc; 4205 int r; 4206 4207 if (utf8 == NULL) { 4208 aes->aes_set = 0; 4209 return (0); /* Succeeded in clearing everything. */ 4210 } 4211 4212 /* Save the UTF8 string. */ 4213 archive_strcpy(&(aes->aes_utf8), utf8); 4214 4215 /* Empty the mbs and wcs strings. */ 4216 archive_string_empty(&(aes->aes_mbs)); 4217 archive_wstring_empty(&(aes->aes_wcs)); 4218 4219 aes->aes_set = AES_SET_UTF8; /* Only UTF8 is set now. */ 4220 4221 /* Try converting UTF-8 to MBS, return false on failure. */ 4222 sc = archive_string_conversion_from_charset(a, "UTF-8", 1); 4223 if (sc == NULL) 4224 return (-1);/* Couldn't allocate memory for sc. */ 4225 r = archive_strcpy_l(&(aes->aes_mbs), utf8, sc); 4226 if (a == NULL) 4227 free_sconv_object(sc); 4228 if (r != 0) 4229 return (-1); 4230 aes->aes_set = AES_SET_UTF8 | AES_SET_MBS; /* Both UTF8 and MBS set. */ 4231 4232 /* Try converting MBS to WCS, return false on failure. */ 4233 if (archive_wstring_append_from_mbs(&(aes->aes_wcs), aes->aes_mbs.s, 4234 aes->aes_mbs.length)) 4235 return (-1); 4236 aes->aes_set = AES_SET_UTF8 | AES_SET_WCS | AES_SET_MBS; 4237 4238 /* All conversions succeeded. */ 4239 return (0); 4240 } 4241