1 /* 2 * Copyright (c) Ian F. Darwin 1986-1995. 3 * Software written by Ian F. Darwin and others; 4 * maintained 1995-present by Christos Zoulas and others. 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 immediately at the beginning of the file, without modification, 11 * this list of conditions, and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /* 29 * Encoding -- determine the character encoding of a text file. 30 * 31 * Joerg Wunsch <joerg@freebsd.org> wrote the original support for 8-bit 32 * international characters. 33 */ 34 35 #include "file.h" 36 37 #ifndef lint 38 FILE_RCSID("@(#)$File: encoding.c,v 1.14 2017/11/02 20:25:39 christos Exp $") 39 #endif /* lint */ 40 41 #include "magic.h" 42 #include <string.h> 43 #include <memory.h> 44 #include <stdlib.h> 45 46 47 private int looks_ascii(const unsigned char *, size_t, unichar *, size_t *); 48 private int looks_utf8_with_BOM(const unsigned char *, size_t, unichar *, 49 size_t *); 50 private int looks_utf7(const unsigned char *, size_t, unichar *, size_t *); 51 private int looks_ucs16(const unsigned char *, size_t, unichar *, size_t *); 52 private int looks_latin1(const unsigned char *, size_t, unichar *, size_t *); 53 private int looks_extended(const unsigned char *, size_t, unichar *, size_t *); 54 private void from_ebcdic(const unsigned char *, size_t, unsigned char *); 55 56 #ifdef DEBUG_ENCODING 57 #define DPRINTF(a) printf a 58 #else 59 #define DPRINTF(a) 60 #endif 61 62 /* 63 * Try to determine whether text is in some character code we can 64 * identify. Each of these tests, if it succeeds, will leave 65 * the text converted into one-unichar-per-character Unicode in 66 * ubuf, and the number of characters converted in ulen. 67 */ 68 protected int 69 file_encoding(struct magic_set *ms, const struct buffer *b, unichar **ubuf, 70 size_t *ulen, const char **code, const char **code_mime, const char **type) 71 { 72 const unsigned char *buf = b->fbuf; 73 size_t nbytes = b->flen; 74 size_t mlen; 75 int rv = 1, ucs_type; 76 unsigned char *nbuf = NULL; 77 unichar *udefbuf; 78 size_t udeflen; 79 80 if (ubuf == NULL) 81 ubuf = &udefbuf; 82 if (ulen == NULL) 83 ulen = &udeflen; 84 85 *type = "text"; 86 *ulen = 0; 87 *code = "unknown"; 88 *code_mime = "binary"; 89 90 mlen = (nbytes + 1) * sizeof((*ubuf)[0]); 91 if ((*ubuf = CAST(unichar *, calloc((size_t)1, mlen))) == NULL) { 92 file_oomem(ms, mlen); 93 goto done; 94 } 95 mlen = (nbytes + 1) * sizeof(nbuf[0]); 96 if ((nbuf = CAST(unsigned char *, calloc((size_t)1, mlen))) == NULL) { 97 file_oomem(ms, mlen); 98 goto done; 99 } 100 101 if (looks_ascii(buf, nbytes, *ubuf, ulen)) { 102 if (looks_utf7(buf, nbytes, *ubuf, ulen) > 0) { 103 DPRINTF(("utf-7 %" SIZE_T_FORMAT "u\n", *ulen)); 104 *code = "UTF-7 Unicode"; 105 *code_mime = "utf-7"; 106 } else { 107 DPRINTF(("ascii %" SIZE_T_FORMAT "u\n", *ulen)); 108 *code = "ASCII"; 109 *code_mime = "us-ascii"; 110 } 111 } else if (looks_utf8_with_BOM(buf, nbytes, *ubuf, ulen) > 0) { 112 DPRINTF(("utf8/bom %" SIZE_T_FORMAT "u\n", *ulen)); 113 *code = "UTF-8 Unicode (with BOM)"; 114 *code_mime = "utf-8"; 115 } else if (file_looks_utf8(buf, nbytes, *ubuf, ulen) > 1) { 116 DPRINTF(("utf8 %" SIZE_T_FORMAT "u\n", *ulen)); 117 *code = "UTF-8 Unicode"; 118 *code_mime = "utf-8"; 119 } else if ((ucs_type = looks_ucs16(buf, nbytes, *ubuf, ulen)) != 0) { 120 if (ucs_type == 1) { 121 *code = "Little-endian UTF-16 Unicode"; 122 *code_mime = "utf-16le"; 123 } else { 124 *code = "Big-endian UTF-16 Unicode"; 125 *code_mime = "utf-16be"; 126 } 127 DPRINTF(("ucs16 %" SIZE_T_FORMAT "u\n", *ulen)); 128 } else if (looks_latin1(buf, nbytes, *ubuf, ulen)) { 129 DPRINTF(("latin1 %" SIZE_T_FORMAT "u\n", *ulen)); 130 *code = "ISO-8859"; 131 *code_mime = "iso-8859-1"; 132 } else if (looks_extended(buf, nbytes, *ubuf, ulen)) { 133 DPRINTF(("extended %" SIZE_T_FORMAT "u\n", *ulen)); 134 *code = "Non-ISO extended-ASCII"; 135 *code_mime = "unknown-8bit"; 136 } else { 137 from_ebcdic(buf, nbytes, nbuf); 138 139 if (looks_ascii(nbuf, nbytes, *ubuf, ulen)) { 140 DPRINTF(("ebcdic %" SIZE_T_FORMAT "u\n", *ulen)); 141 *code = "EBCDIC"; 142 *code_mime = "ebcdic"; 143 } else if (looks_latin1(nbuf, nbytes, *ubuf, ulen)) { 144 DPRINTF(("ebcdic/international %" SIZE_T_FORMAT "u\n", 145 *ulen)); 146 *code = "International EBCDIC"; 147 *code_mime = "ebcdic"; 148 } else { /* Doesn't look like text at all */ 149 DPRINTF(("binary\n")); 150 rv = 0; 151 *type = "binary"; 152 } 153 } 154 155 done: 156 free(nbuf); 157 if (ubuf == &udefbuf) 158 free(udefbuf); 159 160 return rv; 161 } 162 163 /* 164 * This table reflects a particular philosophy about what constitutes 165 * "text," and there is room for disagreement about it. 166 * 167 * Version 3.31 of the file command considered a file to be ASCII if 168 * each of its characters was approved by either the isascii() or 169 * isalpha() function. On most systems, this would mean that any 170 * file consisting only of characters in the range 0x00 ... 0x7F 171 * would be called ASCII text, but many systems might reasonably 172 * consider some characters outside this range to be alphabetic, 173 * so the file command would call such characters ASCII. It might 174 * have been more accurate to call this "considered textual on the 175 * local system" than "ASCII." 176 * 177 * It considered a file to be "International language text" if each 178 * of its characters was either an ASCII printing character (according 179 * to the real ASCII standard, not the above test), a character in 180 * the range 0x80 ... 0xFF, or one of the following control characters: 181 * backspace, tab, line feed, vertical tab, form feed, carriage return, 182 * escape. No attempt was made to determine the language in which files 183 * of this type were written. 184 * 185 * 186 * The table below considers a file to be ASCII if all of its characters 187 * are either ASCII printing characters (again, according to the X3.4 188 * standard, not isascii()) or any of the following controls: bell, 189 * backspace, tab, line feed, form feed, carriage return, esc, nextline. 190 * 191 * I include bell because some programs (particularly shell scripts) 192 * use it literally, even though it is rare in normal text. I exclude 193 * vertical tab because it never seems to be used in real text. I also 194 * include, with hesitation, the X3.64/ECMA-43 control nextline (0x85), 195 * because that's what the dd EBCDIC->ASCII table maps the EBCDIC newline 196 * character to. It might be more appropriate to include it in the 8859 197 * set instead of the ASCII set, but it's got to be included in *something* 198 * we recognize or EBCDIC files aren't going to be considered textual. 199 * Some old Unix source files use SO/SI (^N/^O) to shift between Greek 200 * and Latin characters, so these should possibly be allowed. But they 201 * make a real mess on VT100-style displays if they're not paired properly, 202 * so we are probably better off not calling them text. 203 * 204 * A file is considered to be ISO-8859 text if its characters are all 205 * either ASCII, according to the above definition, or printing characters 206 * from the ISO-8859 8-bit extension, characters 0xA0 ... 0xFF. 207 * 208 * Finally, a file is considered to be international text from some other 209 * character code if its characters are all either ISO-8859 (according to 210 * the above definition) or characters in the range 0x80 ... 0x9F, which 211 * ISO-8859 considers to be control characters but the IBM PC and Macintosh 212 * consider to be printing characters. 213 */ 214 215 #define F 0 /* character never appears in text */ 216 #define T 1 /* character appears in plain ASCII text */ 217 #define I 2 /* character appears in ISO-8859 text */ 218 #define X 3 /* character appears in non-ISO extended ASCII (Mac, IBM PC) */ 219 220 private char text_chars[256] = { 221 /* BEL BS HT LF VT FF CR */ 222 F, F, F, F, F, F, F, T, T, T, T, T, T, T, F, F, /* 0x0X */ 223 /* ESC */ 224 F, F, F, F, F, F, F, F, F, F, F, T, F, F, F, F, /* 0x1X */ 225 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x2X */ 226 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x3X */ 227 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x4X */ 228 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x5X */ 229 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x6X */ 230 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, F, /* 0x7X */ 231 /* NEL */ 232 X, X, X, X, X, T, X, X, X, X, X, X, X, X, X, X, /* 0x8X */ 233 X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 0x9X */ 234 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xaX */ 235 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xbX */ 236 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xcX */ 237 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xdX */ 238 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xeX */ 239 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I /* 0xfX */ 240 }; 241 242 private int 243 looks_ascii(const unsigned char *buf, size_t nbytes, unichar *ubuf, 244 size_t *ulen) 245 { 246 size_t i; 247 248 *ulen = 0; 249 250 for (i = 0; i < nbytes; i++) { 251 int t = text_chars[buf[i]]; 252 253 if (t != T) 254 return 0; 255 256 ubuf[(*ulen)++] = buf[i]; 257 } 258 259 return 1; 260 } 261 262 private int 263 looks_latin1(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 264 { 265 size_t i; 266 267 *ulen = 0; 268 269 for (i = 0; i < nbytes; i++) { 270 int t = text_chars[buf[i]]; 271 272 if (t != T && t != I) 273 return 0; 274 275 ubuf[(*ulen)++] = buf[i]; 276 } 277 278 return 1; 279 } 280 281 private int 282 looks_extended(const unsigned char *buf, size_t nbytes, unichar *ubuf, 283 size_t *ulen) 284 { 285 size_t i; 286 287 *ulen = 0; 288 289 for (i = 0; i < nbytes; i++) { 290 int t = text_chars[buf[i]]; 291 292 if (t != T && t != I && t != X) 293 return 0; 294 295 ubuf[(*ulen)++] = buf[i]; 296 } 297 298 return 1; 299 } 300 301 /* 302 * Decide whether some text looks like UTF-8. Returns: 303 * 304 * -1: invalid UTF-8 305 * 0: uses odd control characters, so doesn't look like text 306 * 1: 7-bit text 307 * 2: definitely UTF-8 text (valid high-bit set bytes) 308 * 309 * If ubuf is non-NULL on entry, text is decoded into ubuf, *ulen; 310 * ubuf must be big enough! 311 */ 312 protected int 313 file_looks_utf8(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 314 { 315 size_t i; 316 int n; 317 unichar c; 318 int gotone = 0, ctrl = 0; 319 320 if (ubuf) 321 *ulen = 0; 322 323 for (i = 0; i < nbytes; i++) { 324 if ((buf[i] & 0x80) == 0) { /* 0xxxxxxx is plain ASCII */ 325 /* 326 * Even if the whole file is valid UTF-8 sequences, 327 * still reject it if it uses weird control characters. 328 */ 329 330 if (text_chars[buf[i]] != T) 331 ctrl = 1; 332 333 if (ubuf) 334 ubuf[(*ulen)++] = buf[i]; 335 } else if ((buf[i] & 0x40) == 0) { /* 10xxxxxx never 1st byte */ 336 return -1; 337 } else { /* 11xxxxxx begins UTF-8 */ 338 int following; 339 340 if ((buf[i] & 0x20) == 0) { /* 110xxxxx */ 341 c = buf[i] & 0x1f; 342 following = 1; 343 } else if ((buf[i] & 0x10) == 0) { /* 1110xxxx */ 344 c = buf[i] & 0x0f; 345 following = 2; 346 } else if ((buf[i] & 0x08) == 0) { /* 11110xxx */ 347 c = buf[i] & 0x07; 348 following = 3; 349 } else if ((buf[i] & 0x04) == 0) { /* 111110xx */ 350 c = buf[i] & 0x03; 351 following = 4; 352 } else if ((buf[i] & 0x02) == 0) { /* 1111110x */ 353 c = buf[i] & 0x01; 354 following = 5; 355 } else 356 return -1; 357 358 for (n = 0; n < following; n++) { 359 i++; 360 if (i >= nbytes) 361 goto done; 362 363 if ((buf[i] & 0x80) == 0 || (buf[i] & 0x40)) 364 return -1; 365 366 c = (c << 6) + (buf[i] & 0x3f); 367 } 368 369 if (ubuf) 370 ubuf[(*ulen)++] = c; 371 gotone = 1; 372 } 373 } 374 done: 375 return ctrl ? 0 : (gotone ? 2 : 1); 376 } 377 378 /* 379 * Decide whether some text looks like UTF-8 with BOM. If there is no 380 * BOM, return -1; otherwise return the result of looks_utf8 on the 381 * rest of the text. 382 */ 383 private int 384 looks_utf8_with_BOM(const unsigned char *buf, size_t nbytes, unichar *ubuf, 385 size_t *ulen) 386 { 387 if (nbytes > 3 && buf[0] == 0xef && buf[1] == 0xbb && buf[2] == 0xbf) 388 return file_looks_utf8(buf + 3, nbytes - 3, ubuf, ulen); 389 else 390 return -1; 391 } 392 393 private int 394 looks_utf7(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 395 { 396 if (nbytes > 4 && buf[0] == '+' && buf[1] == '/' && buf[2] == 'v') 397 switch (buf[3]) { 398 case '8': 399 case '9': 400 case '+': 401 case '/': 402 if (ubuf) 403 *ulen = 0; 404 return 1; 405 default: 406 return -1; 407 } 408 else 409 return -1; 410 } 411 412 private int 413 looks_ucs16(const unsigned char *buf, size_t nbytes, unichar *ubuf, 414 size_t *ulen) 415 { 416 int bigend; 417 size_t i; 418 419 if (nbytes < 2) 420 return 0; 421 422 if (buf[0] == 0xff && buf[1] == 0xfe) 423 bigend = 0; 424 else if (buf[0] == 0xfe && buf[1] == 0xff) 425 bigend = 1; 426 else 427 return 0; 428 429 *ulen = 0; 430 431 for (i = 2; i + 1 < nbytes; i += 2) { 432 /* XXX fix to properly handle chars > 65536 */ 433 434 if (bigend) 435 ubuf[(*ulen)++] = buf[i + 1] + 256 * buf[i]; 436 else 437 ubuf[(*ulen)++] = buf[i] + 256 * buf[i + 1]; 438 439 if (ubuf[*ulen - 1] == 0xfffe) 440 return 0; 441 if (ubuf[*ulen - 1] < 128 && 442 text_chars[(size_t)ubuf[*ulen - 1]] != T) 443 return 0; 444 } 445 446 return 1 + bigend; 447 } 448 449 #undef F 450 #undef T 451 #undef I 452 #undef X 453 454 /* 455 * This table maps each EBCDIC character to an (8-bit extended) ASCII 456 * character, as specified in the rationale for the dd(1) command in 457 * draft 11.2 (September, 1991) of the POSIX P1003.2 standard. 458 * 459 * Unfortunately it does not seem to correspond exactly to any of the 460 * five variants of EBCDIC documented in IBM's _Enterprise Systems 461 * Architecture/390: Principles of Operation_, SA22-7201-06, Seventh 462 * Edition, July, 1999, pp. I-1 - I-4. 463 * 464 * Fortunately, though, all versions of EBCDIC, including this one, agree 465 * on most of the printing characters that also appear in (7-bit) ASCII. 466 * Of these, only '|', '!', '~', '^', '[', and ']' are in question at all. 467 * 468 * Fortunately too, there is general agreement that codes 0x00 through 469 * 0x3F represent control characters, 0x41 a nonbreaking space, and the 470 * remainder printing characters. 471 * 472 * This is sufficient to allow us to identify EBCDIC text and to distinguish 473 * between old-style and internationalized examples of text. 474 */ 475 476 private unsigned char ebcdic_to_ascii[] = { 477 0, 1, 2, 3, 156, 9, 134, 127, 151, 141, 142, 11, 12, 13, 14, 15, 478 16, 17, 18, 19, 157, 133, 8, 135, 24, 25, 146, 143, 28, 29, 30, 31, 479 128, 129, 130, 131, 132, 10, 23, 27, 136, 137, 138, 139, 140, 5, 6, 7, 480 144, 145, 22, 147, 148, 149, 150, 4, 152, 153, 154, 155, 20, 21, 158, 26, 481 ' ', 160, 161, 162, 163, 164, 165, 166, 167, 168, 213, '.', '<', '(', '+', '|', 482 '&', 169, 170, 171, 172, 173, 174, 175, 176, 177, '!', '$', '*', ')', ';', '~', 483 '-', '/', 178, 179, 180, 181, 182, 183, 184, 185, 203, ',', '%', '_', '>', '?', 484 186, 187, 188, 189, 190, 191, 192, 193, 194, '`', ':', '#', '@', '\'','=', '"', 485 195, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 196, 197, 198, 199, 200, 201, 486 202, 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', '^', 204, 205, 206, 207, 208, 487 209, 229, 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 210, 211, 212, '[', 214, 215, 488 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, ']', 230, 231, 489 '{', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 232, 233, 234, 235, 236, 237, 490 '}', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 238, 239, 240, 241, 242, 243, 491 '\\',159, 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 244, 245, 246, 247, 248, 249, 492 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 250, 251, 252, 253, 254, 255 493 }; 494 495 #ifdef notdef 496 /* 497 * The following EBCDIC-to-ASCII table may relate more closely to reality, 498 * or at least to modern reality. It comes from 499 * 500 * http://ftp.s390.ibm.com/products/oe/bpxqp9.html 501 * 502 * and maps the characters of EBCDIC code page 1047 (the code used for 503 * Unix-derived software on IBM's 390 systems) to the corresponding 504 * characters from ISO 8859-1. 505 * 506 * If this table is used instead of the above one, some of the special 507 * cases for the NEL character can be taken out of the code. 508 */ 509 510 private unsigned char ebcdic_1047_to_8859[] = { 511 0x00,0x01,0x02,0x03,0x9C,0x09,0x86,0x7F,0x97,0x8D,0x8E,0x0B,0x0C,0x0D,0x0E,0x0F, 512 0x10,0x11,0x12,0x13,0x9D,0x0A,0x08,0x87,0x18,0x19,0x92,0x8F,0x1C,0x1D,0x1E,0x1F, 513 0x80,0x81,0x82,0x83,0x84,0x85,0x17,0x1B,0x88,0x89,0x8A,0x8B,0x8C,0x05,0x06,0x07, 514 0x90,0x91,0x16,0x93,0x94,0x95,0x96,0x04,0x98,0x99,0x9A,0x9B,0x14,0x15,0x9E,0x1A, 515 0x20,0xA0,0xE2,0xE4,0xE0,0xE1,0xE3,0xE5,0xE7,0xF1,0xA2,0x2E,0x3C,0x28,0x2B,0x7C, 516 0x26,0xE9,0xEA,0xEB,0xE8,0xED,0xEE,0xEF,0xEC,0xDF,0x21,0x24,0x2A,0x29,0x3B,0x5E, 517 0x2D,0x2F,0xC2,0xC4,0xC0,0xC1,0xC3,0xC5,0xC7,0xD1,0xA6,0x2C,0x25,0x5F,0x3E,0x3F, 518 0xF8,0xC9,0xCA,0xCB,0xC8,0xCD,0xCE,0xCF,0xCC,0x60,0x3A,0x23,0x40,0x27,0x3D,0x22, 519 0xD8,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0xAB,0xBB,0xF0,0xFD,0xFE,0xB1, 520 0xB0,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0xAA,0xBA,0xE6,0xB8,0xC6,0xA4, 521 0xB5,0x7E,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0xA1,0xBF,0xD0,0x5B,0xDE,0xAE, 522 0xAC,0xA3,0xA5,0xB7,0xA9,0xA7,0xB6,0xBC,0xBD,0xBE,0xDD,0xA8,0xAF,0x5D,0xB4,0xD7, 523 0x7B,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0xAD,0xF4,0xF6,0xF2,0xF3,0xF5, 524 0x7D,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0xB9,0xFB,0xFC,0xF9,0xFA,0xFF, 525 0x5C,0xF7,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0xB2,0xD4,0xD6,0xD2,0xD3,0xD5, 526 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0xB3,0xDB,0xDC,0xD9,0xDA,0x9F 527 }; 528 #endif 529 530 /* 531 * Copy buf[0 ... nbytes-1] into out[], translating EBCDIC to ASCII. 532 */ 533 private void 534 from_ebcdic(const unsigned char *buf, size_t nbytes, unsigned char *out) 535 { 536 size_t i; 537 538 for (i = 0; i < nbytes; i++) { 539 out[i] = ebcdic_to_ascii[buf[i]]; 540 } 541 } 542