xref: /PHP-7.3/ext/fileinfo/libmagic/encoding.c (revision e2182a1b)
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
file_encoding(struct magic_set * ms,const struct buffer * b,unichar ** ubuf,size_t * ulen,const char ** code,const char ** code_mime,const char ** type)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 *, ecalloc((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 *, ecalloc((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 	efree(nbuf);
157 	if (ubuf == &udefbuf)
158 		efree(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
looks_ascii(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
looks_latin1(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
looks_extended(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
file_looks_utf8(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
looks_utf8_with_BOM(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
looks_utf7(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
looks_ucs16(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)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
from_ebcdic(const unsigned char * buf,size_t nbytes,unsigned char * out)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