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diff --git a/src/lib/libcrypto/asn1/a_strex.c b/src/lib/libcrypto/asn1/a_strex.c
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1/* a_strex.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <string.h>
61#include <openssl/crypto.h>
62#include <openssl/x509.h>
63#include <openssl/asn1.h>
64
65#include "charmap.h"
66
67/* ASN1_STRING_print_ex() and X509_NAME_print_ex().
68 * Enhanced string and name printing routines handling
69 * multibyte characters, RFC2253 and a host of other
70 * options.
71 */
72
73
74#define CHARTYPE_BS_ESC (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
75
76
77/* Three IO functions for sending data to memory, a BIO and
78 * and a FILE pointer.
79 */
80#if 0 /* never used */
81static int send_mem_chars(void *arg, const void *buf, int len)
82{
83 unsigned char **out = arg;
84 if(!out) return 1;
85 memcpy(*out, buf, len);
86 *out += len;
87 return 1;
88}
89#endif
90
91static int send_bio_chars(void *arg, const void *buf, int len)
92{
93 if(!arg) return 1;
94 if(BIO_write(arg, buf, len) != len) return 0;
95 return 1;
96}
97
98static int send_fp_chars(void *arg, const void *buf, int len)
99{
100 if(!arg) return 1;
101 if(fwrite(buf, 1, len, arg) != (unsigned int)len) return 0;
102 return 1;
103}
104
105typedef int char_io(void *arg, const void *buf, int len);
106
107/* This function handles display of
108 * strings, one character at a time.
109 * It is passed an unsigned long for each
110 * character because it could come from 2 or even
111 * 4 byte forms.
112 */
113
114static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, char_io *io_ch, void *arg)
115{
116 unsigned char chflgs, chtmp;
117 char tmphex[11];
118 if(c > 0xffff) {
119 BIO_snprintf(tmphex, 11, "\\W%08lX", c);
120 if(!io_ch(arg, tmphex, 10)) return -1;
121 return 10;
122 }
123 if(c > 0xff) {
124 BIO_snprintf(tmphex, 11, "\\U%04lX", c);
125 if(!io_ch(arg, tmphex, 6)) return -1;
126 return 6;
127 }
128 chtmp = (unsigned char)c;
129 if(chtmp > 0x7f) chflgs = flags & ASN1_STRFLGS_ESC_MSB;
130 else chflgs = char_type[chtmp] & flags;
131 if(chflgs & CHARTYPE_BS_ESC) {
132 /* If we don't escape with quotes, signal we need quotes */
133 if(chflgs & ASN1_STRFLGS_ESC_QUOTE) {
134 if(do_quotes) *do_quotes = 1;
135 if(!io_ch(arg, &chtmp, 1)) return -1;
136 return 1;
137 }
138 if(!io_ch(arg, "\\", 1)) return -1;
139 if(!io_ch(arg, &chtmp, 1)) return -1;
140 return 2;
141 }
142 if(chflgs & (ASN1_STRFLGS_ESC_CTRL|ASN1_STRFLGS_ESC_MSB)) {
143 BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
144 if(!io_ch(arg, tmphex, 3)) return -1;
145 return 3;
146 }
147 if(!io_ch(arg, &chtmp, 1)) return -1;
148 return 1;
149}
150
151#define BUF_TYPE_WIDTH_MASK 0x7
152#define BUF_TYPE_CONVUTF8 0x8
153
154/* This function sends each character in a buffer to
155 * do_esc_char(). It interprets the content formats
156 * and converts to or from UTF8 as appropriate.
157 */
158
159static int do_buf(unsigned char *buf, int buflen,
160 int type, unsigned char flags, char *quotes, char_io *io_ch, void *arg)
161{
162 int i, outlen, len;
163 unsigned char orflags, *p, *q;
164 unsigned long c;
165 p = buf;
166 q = buf + buflen;
167 outlen = 0;
168 while(p != q) {
169 if(p == buf) orflags = CHARTYPE_FIRST_ESC_2253;
170 else orflags = 0;
171 switch(type & BUF_TYPE_WIDTH_MASK) {
172 case 4:
173 c = ((unsigned long)*p++) << 24;
174 c |= ((unsigned long)*p++) << 16;
175 c |= ((unsigned long)*p++) << 8;
176 c |= *p++;
177 break;
178
179 case 2:
180 c = ((unsigned long)*p++) << 8;
181 c |= *p++;
182 break;
183
184 case 1:
185 c = *p++;
186 break;
187
188 case 0:
189 i = UTF8_getc(p, buflen, &c);
190 if(i < 0) return -1; /* Invalid UTF8String */
191 p += i;
192 break;
193 }
194 if (p == q) orflags = CHARTYPE_LAST_ESC_2253;
195 if(type & BUF_TYPE_CONVUTF8) {
196 unsigned char utfbuf[6];
197 int utflen;
198 utflen = UTF8_putc(utfbuf, 6, c);
199 for(i = 0; i < utflen; i++) {
200 /* We don't need to worry about setting orflags correctly
201 * because if utflen==1 its value will be correct anyway
202 * otherwise each character will be > 0x7f and so the
203 * character will never be escaped on first and last.
204 */
205 len = do_esc_char(utfbuf[i], (unsigned char)(flags | orflags), quotes, io_ch, arg);
206 if(len < 0) return -1;
207 outlen += len;
208 }
209 } else {
210 len = do_esc_char(c, (unsigned char)(flags | orflags), quotes, io_ch, arg);
211 if(len < 0) return -1;
212 outlen += len;
213 }
214 }
215 return outlen;
216}
217
218/* This function hex dumps a buffer of characters */
219
220static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf, int buflen)
221{
222 const static char hexdig[] = "0123456789ABCDEF";
223 unsigned char *p, *q;
224 char hextmp[2];
225 if(arg) {
226 p = buf;
227 q = buf + buflen;
228 while(p != q) {
229 hextmp[0] = hexdig[*p >> 4];
230 hextmp[1] = hexdig[*p & 0xf];
231 if(!io_ch(arg, hextmp, 2)) return -1;
232 p++;
233 }
234 }
235 return buflen << 1;
236}
237
238/* "dump" a string. This is done when the type is unknown,
239 * or the flags request it. We can either dump the content
240 * octets or the entire DER encoding. This uses the RFC2253
241 * #01234 format.
242 */
243
244static int do_dump(unsigned long lflags, char_io *io_ch, void *arg, ASN1_STRING *str)
245{
246 /* Placing the ASN1_STRING in a temp ASN1_TYPE allows
247 * the DER encoding to readily obtained
248 */
249 ASN1_TYPE t;
250 unsigned char *der_buf, *p;
251 int outlen, der_len;
252
253 if(!io_ch(arg, "#", 1)) return -1;
254 /* If we don't dump DER encoding just dump content octets */
255 if(!(lflags & ASN1_STRFLGS_DUMP_DER)) {
256 outlen = do_hex_dump(io_ch, arg, str->data, str->length);
257 if(outlen < 0) return -1;
258 return outlen + 1;
259 }
260 t.type = str->type;
261 t.value.ptr = (char *)str;
262 der_len = i2d_ASN1_TYPE(&t, NULL);
263 der_buf = OPENSSL_malloc(der_len);
264 if(!der_buf) return -1;
265 p = der_buf;
266 i2d_ASN1_TYPE(&t, &p);
267 outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
268 OPENSSL_free(der_buf);
269 if(outlen < 0) return -1;
270 return outlen + 1;
271}
272
273/* Lookup table to convert tags to character widths,
274 * 0 = UTF8 encoded, -1 is used for non string types
275 * otherwise it is the number of bytes per character
276 */
277
278const static char tag2nbyte[] = {
279 -1, -1, -1, -1, -1, /* 0-4 */
280 -1, -1, -1, -1, -1, /* 5-9 */
281 -1, -1, 0, -1, /* 10-13 */
282 -1, -1, -1, -1, /* 15-17 */
283 -1, 1, 1, /* 18-20 */
284 -1, 1, -1,-1, /* 21-24 */
285 -1, 1, -1, /* 25-27 */
286 4, -1, 2 /* 28-30 */
287};
288
289#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
290 ASN1_STRFLGS_ESC_QUOTE | \
291 ASN1_STRFLGS_ESC_CTRL | \
292 ASN1_STRFLGS_ESC_MSB)
293
294/* This is the main function, print out an
295 * ASN1_STRING taking note of various escape
296 * and display options. Returns number of
297 * characters written or -1 if an error
298 * occurred.
299 */
300
301static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags, ASN1_STRING *str)
302{
303 int outlen, len;
304 int type;
305 char quotes;
306 unsigned char flags;
307 quotes = 0;
308 /* Keep a copy of escape flags */
309 flags = (unsigned char)(lflags & ESC_FLAGS);
310
311 type = str->type;
312
313 outlen = 0;
314
315
316 if(lflags & ASN1_STRFLGS_SHOW_TYPE) {
317 const char *tagname;
318 tagname = ASN1_tag2str(type);
319 outlen += strlen(tagname);
320 if(!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1)) return -1;
321 outlen++;
322 }
323
324 /* Decide what to do with type, either dump content or display it */
325
326 /* Dump everything */
327 if(lflags & ASN1_STRFLGS_DUMP_ALL) type = -1;
328 /* Ignore the string type */
329 else if(lflags & ASN1_STRFLGS_IGNORE_TYPE) type = 1;
330 else {
331 /* Else determine width based on type */
332 if((type > 0) && (type < 31)) type = tag2nbyte[type];
333 else type = -1;
334 if((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN)) type = 1;
335 }
336
337 if(type == -1) {
338 len = do_dump(lflags, io_ch, arg, str);
339 if(len < 0) return -1;
340 outlen += len;
341 return outlen;
342 }
343
344 if(lflags & ASN1_STRFLGS_UTF8_CONVERT) {
345 /* Note: if string is UTF8 and we want
346 * to convert to UTF8 then we just interpret
347 * it as 1 byte per character to avoid converting
348 * twice.
349 */
350 if(!type) type = 1;
351 else type |= BUF_TYPE_CONVUTF8;
352 }
353
354 len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
355 if(outlen < 0) return -1;
356 outlen += len;
357 if(quotes) outlen += 2;
358 if(!arg) return outlen;
359 if(quotes && !io_ch(arg, "\"", 1)) return -1;
360 do_buf(str->data, str->length, type, flags, NULL, io_ch, arg);
361 if(quotes && !io_ch(arg, "\"", 1)) return -1;
362 return outlen;
363}
364
365/* Used for line indenting: print 'indent' spaces */
366
367static int do_indent(char_io *io_ch, void *arg, int indent)
368{
369 int i;
370 for(i = 0; i < indent; i++)
371 if(!io_ch(arg, " ", 1)) return 0;
372 return 1;
373}
374
375#define FN_WIDTH_LN 25
376#define FN_WIDTH_SN 10
377
378static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n,
379 int indent, unsigned long flags)
380{
381 int i, prev = -1, orflags, cnt;
382 int fn_opt, fn_nid;
383 ASN1_OBJECT *fn;
384 ASN1_STRING *val;
385 X509_NAME_ENTRY *ent;
386 char objtmp[80];
387 const char *objbuf;
388 int outlen, len;
389 char *sep_dn, *sep_mv, *sep_eq;
390 int sep_dn_len, sep_mv_len, sep_eq_len;
391 if(indent < 0) indent = 0;
392 outlen = indent;
393 if(!do_indent(io_ch, arg, indent)) return -1;
394 switch (flags & XN_FLAG_SEP_MASK)
395 {
396 case XN_FLAG_SEP_MULTILINE:
397 sep_dn = "\n";
398 sep_dn_len = 1;
399 sep_mv = " + ";
400 sep_mv_len = 3;
401 break;
402
403 case XN_FLAG_SEP_COMMA_PLUS:
404 sep_dn = ",";
405 sep_dn_len = 1;
406 sep_mv = "+";
407 sep_mv_len = 1;
408 indent = 0;
409 break;
410
411 case XN_FLAG_SEP_CPLUS_SPC:
412 sep_dn = ", ";
413 sep_dn_len = 2;
414 sep_mv = " + ";
415 sep_mv_len = 3;
416 indent = 0;
417 break;
418
419 case XN_FLAG_SEP_SPLUS_SPC:
420 sep_dn = "; ";
421 sep_dn_len = 2;
422 sep_mv = " + ";
423 sep_mv_len = 3;
424 indent = 0;
425 break;
426
427 default:
428 return -1;
429 }
430
431 if(flags & XN_FLAG_SPC_EQ) {
432 sep_eq = " = ";
433 sep_eq_len = 3;
434 } else {
435 sep_eq = "=";
436 sep_eq_len = 1;
437 }
438
439 fn_opt = flags & XN_FLAG_FN_MASK;
440
441 cnt = X509_NAME_entry_count(n);
442 for(i = 0; i < cnt; i++) {
443 if(flags & XN_FLAG_DN_REV)
444 ent = X509_NAME_get_entry(n, cnt - i - 1);
445 else ent = X509_NAME_get_entry(n, i);
446 if(prev != -1) {
447 if(prev == ent->set) {
448 if(!io_ch(arg, sep_mv, sep_mv_len)) return -1;
449 outlen += sep_mv_len;
450 } else {
451 if(!io_ch(arg, sep_dn, sep_dn_len)) return -1;
452 outlen += sep_dn_len;
453 if(!do_indent(io_ch, arg, indent)) return -1;
454 outlen += indent;
455 }
456 }
457 prev = ent->set;
458 fn = X509_NAME_ENTRY_get_object(ent);
459 val = X509_NAME_ENTRY_get_data(ent);
460 fn_nid = OBJ_obj2nid(fn);
461 if(fn_opt != XN_FLAG_FN_NONE) {
462 int objlen, fld_len;
463 if((fn_opt == XN_FLAG_FN_OID) || (fn_nid==NID_undef) ) {
464 OBJ_obj2txt(objtmp, 80, fn, 1);
465 fld_len = 0; /* XXX: what should this be? */
466 objbuf = objtmp;
467 } else {
468 if(fn_opt == XN_FLAG_FN_SN) {
469 fld_len = FN_WIDTH_SN;
470 objbuf = OBJ_nid2sn(fn_nid);
471 } else if(fn_opt == XN_FLAG_FN_LN) {
472 fld_len = FN_WIDTH_LN;
473 objbuf = OBJ_nid2ln(fn_nid);
474 } else {
475 fld_len = 0; /* XXX: what should this be? */
476 objbuf = "";
477 }
478 }
479 objlen = strlen(objbuf);
480 if(!io_ch(arg, objbuf, objlen)) return -1;
481 if ((objlen < fld_len) && (flags & XN_FLAG_FN_ALIGN)) {
482 if (!do_indent(io_ch, arg, fld_len - objlen)) return -1;
483 outlen += fld_len - objlen;
484 }
485 if(!io_ch(arg, sep_eq, sep_eq_len)) return -1;
486 outlen += objlen + sep_eq_len;
487 }
488 /* If the field name is unknown then fix up the DER dump
489 * flag. We might want to limit this further so it will
490 * DER dump on anything other than a few 'standard' fields.
491 */
492 if((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
493 orflags = ASN1_STRFLGS_DUMP_ALL;
494 else orflags = 0;
495
496 len = do_print_ex(io_ch, arg, flags | orflags, val);
497 if(len < 0) return -1;
498 outlen += len;
499 }
500 return outlen;
501}
502
503/* Wrappers round the main functions */
504
505int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags)
506{
507 if(flags == XN_FLAG_COMPAT)
508 return X509_NAME_print(out, nm, indent);
509 return do_name_ex(send_bio_chars, out, nm, indent, flags);
510}
511
512
513int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags)
514{
515 if(flags == XN_FLAG_COMPAT)
516 {
517 BIO *btmp;
518 int ret;
519 btmp = BIO_new_fp(fp, BIO_NOCLOSE);
520 if(!btmp) return -1;
521 ret = X509_NAME_print(btmp, nm, indent);
522 BIO_free(btmp);
523 return ret;
524 }
525 return do_name_ex(send_fp_chars, fp, nm, indent, flags);
526}
527
528int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags)
529{
530 return do_print_ex(send_bio_chars, out, flags, str);
531}
532
533
534int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags)
535{
536 return do_print_ex(send_fp_chars, fp, flags, str);
537}
538
539/* Utility function: convert any string type to UTF8, returns number of bytes
540 * in output string or a negative error code
541 */
542
543int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
544{
545 ASN1_STRING stmp, *str = &stmp;
546 int mbflag, type, ret;
547 if(!in) return -1;
548 type = in->type;
549 if((type < 0) || (type > 30)) return -1;
550 mbflag = tag2nbyte[type];
551 if(mbflag == -1) return -1;
552 mbflag |= MBSTRING_FLAG;
553 stmp.data = NULL;
554 ret = ASN1_mbstring_copy(&str, in->data, in->length, mbflag, B_ASN1_UTF8STRING);
555 if(ret < 0) return ret;
556 *out = stmp.data;
557 return stmp.length;
558}
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