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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
81int 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
90int send_bio_chars(void *arg, const void *buf, int len)
91{
92 if(!arg) return 1;
93 if(BIO_write(arg, buf, len) != len) return 0;
94 return 1;
95}
96
97int send_fp_chars(void *arg, const void *buf, int len)
98{
99 if(!arg) return 1;
100 if(fwrite(buf, 1, len, arg) != (unsigned int)len) return 0;
101 return 1;
102}
103
104typedef int char_io(void *arg, const void *buf, int len);
105
106/* This function handles display of
107 * strings, one character at a time.
108 * It is passed an unsigned long for each
109 * character because it could come from 2 or even
110 * 4 byte forms.
111 */
112
113static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, char_io *io_ch, void *arg)
114{
115 unsigned char chflgs, chtmp;
116 char tmphex[11];
117 if(c > 0xffff) {
118 BIO_snprintf(tmphex, 11, "\\W%08lX", c);
119 if(!io_ch(arg, tmphex, 10)) return -1;
120 return 10;
121 }
122 if(c > 0xff) {
123 BIO_snprintf(tmphex, 11, "\\U%04lX", c);
124 if(!io_ch(arg, tmphex, 6)) return -1;
125 return 6;
126 }
127 chtmp = (unsigned char)c;
128 if(chtmp > 0x7f) chflgs = flags & ASN1_STRFLGS_ESC_MSB;
129 else chflgs = char_type[chtmp] & flags;
130 if(chflgs & CHARTYPE_BS_ESC) {
131 /* If we don't escape with quotes, signal we need quotes */
132 if(chflgs & ASN1_STRFLGS_ESC_QUOTE) {
133 if(do_quotes) *do_quotes = 1;
134 if(!io_ch(arg, &chtmp, 1)) return -1;
135 return 1;
136 }
137 if(!io_ch(arg, "\\", 1)) return -1;
138 if(!io_ch(arg, &chtmp, 1)) return -1;
139 return 2;
140 }
141 if(chflgs & (ASN1_STRFLGS_ESC_CTRL|ASN1_STRFLGS_ESC_MSB)) {
142 BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
143 if(!io_ch(arg, tmphex, 3)) return -1;
144 return 3;
145 }
146 if(!io_ch(arg, &chtmp, 1)) return -1;
147 return 1;
148}
149
150#define BUF_TYPE_WIDTH_MASK 0x7
151#define BUF_TYPE_CONVUTF8 0x8
152
153/* This function sends each character in a buffer to
154 * do_esc_char(). It interprets the content formats
155 * and converts to or from UTF8 as appropriate.
156 */
157
158static int do_buf(unsigned char *buf, int buflen,
159 int type, unsigned char flags, char *quotes, char_io *io_ch, void *arg)
160{
161 int i, outlen, len;
162 unsigned char orflags, *p, *q;
163 unsigned long c;
164 p = buf;
165 q = buf + buflen;
166 outlen = 0;
167 while(p != q) {
168 if(p == buf) orflags = CHARTYPE_FIRST_ESC_2253;
169 else orflags = 0;
170 switch(type & BUF_TYPE_WIDTH_MASK) {
171 case 4:
172 c = ((unsigned long)*p++) << 24;
173 c |= ((unsigned long)*p++) << 16;
174 c |= ((unsigned long)*p++) << 8;
175 c |= *p++;
176 break;
177
178 case 2:
179 c = ((unsigned long)*p++) << 8;
180 c |= *p++;
181 break;
182
183 case 1:
184 c = *p++;
185 break;
186
187 case 0:
188 i = UTF8_getc(p, buflen, &c);
189 if(i < 0) return -1; /* Invalid UTF8String */
190 p += i;
191 break;
192 }
193 if (p == q) orflags = CHARTYPE_LAST_ESC_2253;
194 if(type & BUF_TYPE_CONVUTF8) {
195 unsigned char utfbuf[6];
196 int utflen;
197 utflen = UTF8_putc(utfbuf, 6, c);
198 for(i = 0; i < utflen; i++) {
199 /* We don't need to worry about setting orflags correctly
200 * because if utflen==1 its value will be correct anyway
201 * otherwise each character will be > 0x7f and so the
202 * character will never be escaped on first and last.
203 */
204 len = do_esc_char(utfbuf[i], (unsigned char)(flags | orflags), quotes, io_ch, arg);
205 if(len < 0) return -1;
206 outlen += len;
207 }
208 } else {
209 len = do_esc_char(c, (unsigned char)(flags | orflags), quotes, io_ch, arg);
210 if(len < 0) return -1;
211 outlen += len;
212 }
213 }
214 return outlen;
215}
216
217/* This function hex dumps a buffer of characters */
218
219static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf, int buflen)
220{
221 const static char hexdig[] = "0123456789ABCDEF";
222 unsigned char *p, *q;
223 char hextmp[2];
224 if(arg) {
225 p = buf;
226 q = buf + buflen;
227 while(p != q) {
228 hextmp[0] = hexdig[*p >> 4];
229 hextmp[1] = hexdig[*p & 0xf];
230 if(!io_ch(arg, hextmp, 2)) return -1;
231 p++;
232 }
233 }
234 return buflen << 1;
235}
236
237/* "dump" a string. This is done when the type is unknown,
238 * or the flags request it. We can either dump the content
239 * octets or the entire DER encoding. This uses the RFC2253
240 * #01234 format.
241 */
242
243int do_dump(unsigned long lflags, char_io *io_ch, void *arg, ASN1_STRING *str)
244{
245 /* Placing the ASN1_STRING in a temp ASN1_TYPE allows
246 * the DER encoding to readily obtained
247 */
248 ASN1_TYPE t;
249 unsigned char *der_buf, *p;
250 int outlen, der_len;
251
252 if(!io_ch(arg, "#", 1)) return -1;
253 /* If we don't dump DER encoding just dump content octets */
254 if(!(lflags & ASN1_STRFLGS_DUMP_DER)) {
255 outlen = do_hex_dump(io_ch, arg, str->data, str->length);
256 if(outlen < 0) return -1;
257 return outlen + 1;
258 }
259 t.type = str->type;
260 t.value.ptr = (char *)str;
261 der_len = i2d_ASN1_TYPE(&t, NULL);
262 der_buf = OPENSSL_malloc(der_len);
263 if(!der_buf) return -1;
264 p = der_buf;
265 i2d_ASN1_TYPE(&t, &p);
266 outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
267 OPENSSL_free(der_buf);
268 if(outlen < 0) return -1;
269 return outlen + 1;
270}
271
272/* Lookup table to convert tags to character widths,
273 * 0 = UTF8 encoded, -1 is used for non string types
274 * otherwise it is the number of bytes per character
275 */
276
277const static char tag2nbyte[] = {
278 -1, -1, -1, -1, -1, /* 0-4 */
279 -1, -1, -1, -1, -1, /* 5-9 */
280 -1, -1, 0, -1, /* 10-13 */
281 -1, -1, -1, -1, /* 15-17 */
282 -1, 1, 1, /* 18-20 */
283 -1, 1, -1,-1, /* 21-24 */
284 -1, 1, -1, /* 25-27 */
285 4, -1, 2 /* 28-30 */
286};
287
288#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
289 ASN1_STRFLGS_ESC_QUOTE | \
290 ASN1_STRFLGS_ESC_CTRL | \
291 ASN1_STRFLGS_ESC_MSB)
292
293/* This is the main function, print out an
294 * ASN1_STRING taking note of various escape
295 * and display options. Returns number of
296 * characters written or -1 if an error
297 * occurred.
298 */
299
300static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags, ASN1_STRING *str)
301{
302 int outlen, len;
303 int type;
304 char quotes;
305 unsigned char flags;
306 quotes = 0;
307 /* Keep a copy of escape flags */
308 flags = (unsigned char)(lflags & ESC_FLAGS);
309
310 type = str->type;
311
312 outlen = 0;
313
314
315 if(lflags & ASN1_STRFLGS_SHOW_TYPE) {
316 const char *tagname;
317 tagname = ASN1_tag2str(type);
318 outlen += strlen(tagname);
319 if(!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1)) return -1;
320 outlen++;
321 }
322
323 /* Decide what to do with type, either dump content or display it */
324
325 /* Dump everything */
326 if(lflags & ASN1_STRFLGS_DUMP_ALL) type = -1;
327 /* Ignore the string type */
328 else if(lflags & ASN1_STRFLGS_IGNORE_TYPE) type = 1;
329 else {
330 /* Else determine width based on type */
331 if((type > 0) && (type < 31)) type = tag2nbyte[type];
332 else type = -1;
333 if((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN)) type = 1;
334 }
335
336 if(type == -1) {
337 len = do_dump(lflags, io_ch, arg, str);
338 if(len < 0) return -1;
339 outlen += len;
340 return outlen;
341 }
342
343 if(lflags & ASN1_STRFLGS_UTF8_CONVERT) {
344 /* Note: if string is UTF8 and we want
345 * to convert to UTF8 then we just interpret
346 * it as 1 byte per character to avoid converting
347 * twice.
348 */
349 if(!type) type = 1;
350 else type |= BUF_TYPE_CONVUTF8;
351 }
352
353 len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
354 if(outlen < 0) return -1;
355 outlen += len;
356 if(quotes) outlen += 2;
357 if(!arg) return outlen;
358 if(quotes && !io_ch(arg, "\"", 1)) return -1;
359 do_buf(str->data, str->length, type, flags, NULL, io_ch, arg);
360 if(quotes && !io_ch(arg, "\"", 1)) return -1;
361 return outlen;
362}
363
364/* Used for line indenting: print 'indent' spaces */
365
366static int do_indent(char_io *io_ch, void *arg, int indent)
367{
368 int i;
369 for(i = 0; i < indent; i++)
370 if(!io_ch(arg, " ", 1)) return 0;
371 return 1;
372}
373
374
375static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n,
376 int indent, unsigned long flags)
377{
378 int i, prev = -1, orflags, cnt;
379 int fn_opt, fn_nid;
380 ASN1_OBJECT *fn;
381 ASN1_STRING *val;
382 X509_NAME_ENTRY *ent;
383 char objtmp[80];
384 const char *objbuf;
385 int outlen, len;
386 char *sep_dn, *sep_mv, *sep_eq;
387 int sep_dn_len, sep_mv_len, sep_eq_len;
388 if(indent < 0) indent = 0;
389 outlen = indent;
390 if(!do_indent(io_ch, arg, indent)) return -1;
391 switch (flags & XN_FLAG_SEP_MASK)
392 {
393 case XN_FLAG_SEP_MULTILINE:
394 sep_dn = "\n";
395 sep_dn_len = 1;
396 sep_mv = " + ";
397 sep_mv_len = 3;
398 break;
399
400 case XN_FLAG_SEP_COMMA_PLUS:
401 sep_dn = ",";
402 sep_dn_len = 1;
403 sep_mv = "+";
404 sep_mv_len = 1;
405 indent = 0;
406 break;
407
408 case XN_FLAG_SEP_CPLUS_SPC:
409 sep_dn = ", ";
410 sep_dn_len = 2;
411 sep_mv = " + ";
412 sep_mv_len = 3;
413 indent = 0;
414 break;
415
416 case XN_FLAG_SEP_SPLUS_SPC:
417 sep_dn = "; ";
418 sep_dn_len = 2;
419 sep_mv = " + ";
420 sep_mv_len = 3;
421 indent = 0;
422 break;
423
424 default:
425 return -1;
426 }
427
428 if(flags & XN_FLAG_SPC_EQ) {
429 sep_eq = " = ";
430 sep_eq_len = 3;
431 } else {
432 sep_eq = "=";
433 sep_eq_len = 1;
434 }
435
436 fn_opt = flags & XN_FLAG_FN_MASK;
437
438 cnt = X509_NAME_entry_count(n);
439 for(i = 0; i < cnt; i++) {
440 if(flags & XN_FLAG_DN_REV)
441 ent = X509_NAME_get_entry(n, cnt - i - 1);
442 else ent = X509_NAME_get_entry(n, i);
443 if(prev != -1) {
444 if(prev == ent->set) {
445 if(!io_ch(arg, sep_mv, sep_mv_len)) return -1;
446 outlen += sep_mv_len;
447 } else {
448 if(!io_ch(arg, sep_dn, sep_dn_len)) return -1;
449 outlen += sep_dn_len;
450 if(!do_indent(io_ch, arg, indent)) return -1;
451 outlen += indent;
452 }
453 }
454 prev = ent->set;
455 fn = X509_NAME_ENTRY_get_object(ent);
456 val = X509_NAME_ENTRY_get_data(ent);
457 fn_nid = OBJ_obj2nid(fn);
458 if(fn_opt != XN_FLAG_FN_NONE) {
459 int objlen;
460 if((fn_opt == XN_FLAG_FN_OID) || (fn_nid==NID_undef) ) {
461 OBJ_obj2txt(objtmp, 80, fn, 1);
462 objbuf = objtmp;
463 } else {
464 if(fn_opt == XN_FLAG_FN_SN)
465 objbuf = OBJ_nid2sn(fn_nid);
466 else if(fn_opt == XN_FLAG_FN_LN)
467 objbuf = OBJ_nid2ln(fn_nid);
468 else objbuf = "";
469 }
470 objlen = strlen(objbuf);
471 if(!io_ch(arg, objbuf, objlen)) return -1;
472 if(!io_ch(arg, sep_eq, sep_eq_len)) return -1;
473 outlen += objlen + sep_eq_len;
474 }
475 /* If the field name is unknown then fix up the DER dump
476 * flag. We might want to limit this further so it will
477 * DER dump on anything other than a few 'standard' fields.
478 */
479 if((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
480 orflags = ASN1_STRFLGS_DUMP_ALL;
481 else orflags = 0;
482
483 len = do_print_ex(io_ch, arg, flags | orflags, val);
484 if(len < 0) return -1;
485 outlen += len;
486 }
487 return outlen;
488}
489
490/* Wrappers round the main functions */
491
492int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags)
493{
494 return do_name_ex(send_bio_chars, out, nm, indent, flags);
495}
496
497
498int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags)
499{
500 return do_name_ex(send_fp_chars, fp, nm, indent, flags);
501}
502
503int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags)
504{
505 return do_print_ex(send_bio_chars, out, flags, str);
506}
507
508
509int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags)
510{
511 return do_print_ex(send_fp_chars, fp, flags, str);
512}
513
514/* Utility function: convert any string type to UTF8, returns number of bytes
515 * in output string or a negative error code
516 */
517
518int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
519{
520 ASN1_STRING stmp, *str = &stmp;
521 int mbflag, type, ret;
522 if(!*out || !in) return -1;
523 type = in->type;
524 if((type < 0) || (type > 30)) return -1;
525 mbflag = tag2nbyte[type];
526 if(mbflag == -1) return -1;
527 mbflag |= MBSTRING_FLAG;
528 stmp.data = NULL;
529 ret = ASN1_mbstring_copy(&str, in->data, in->length, mbflag, B_ASN1_UTF8STRING);
530 if(ret < 0) return ret;
531 if(out) *out = stmp.data;
532 return stmp.length;
533}
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