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diff --git a/src/lib/libcrypto/asn1/a_mbstr.c b/src/lib/libcrypto/asn1/a_mbstr.c
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1/* a_mbstr.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 1999.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 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 <ctype.h>
61#include "cryptlib.h"
62#include <openssl/asn1.h>
63
64static int traverse_string(const unsigned char *p, int len, int inform,
65 int (*rfunc)(unsigned long value, void *in), void *arg);
66static int in_utf8(unsigned long value, void *arg);
67static int out_utf8(unsigned long value, void *arg);
68static int type_str(unsigned long value, void *arg);
69static int cpy_asc(unsigned long value, void *arg);
70static int cpy_bmp(unsigned long value, void *arg);
71static int cpy_univ(unsigned long value, void *arg);
72static int cpy_utf8(unsigned long value, void *arg);
73static int is_printable(unsigned long value);
74
75/* These functions take a string in UTF8, ASCII or multibyte form and
76 * a mask of permissible ASN1 string types. It then works out the minimal
77 * type (using the order Printable < IA5 < T61 < BMP < Universal < UTF8)
78 * and creates a string of the correct type with the supplied data.
79 * Yes this is horrible: it has to be :-(
80 * The 'ncopy' form checks minimum and maximum size limits too.
81 */
82
83int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
84 int inform, unsigned long mask)
85{
86 return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
87}
88
89int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
90 int inform, unsigned long mask,
91 long minsize, long maxsize)
92{
93 int str_type;
94 int ret;
95 int outform, outlen;
96 ASN1_STRING *dest;
97 unsigned char *p;
98 int nchar;
99 char strbuf[32];
100 int (*cpyfunc)(unsigned long,void *) = NULL;
101 if(len == -1) len = strlen((const char *)in);
102 if(!mask) mask = DIRSTRING_TYPE;
103
104 /* First do a string check and work out the number of characters */
105 switch(inform) {
106
107 case MBSTRING_BMP:
108 if(len & 1) {
109 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
110 ASN1_R_INVALID_BMPSTRING_LENGTH);
111 return -1;
112 }
113 nchar = len >> 1;
114 break;
115
116 case MBSTRING_UNIV:
117 if(len & 3) {
118 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
119 ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
120 return -1;
121 }
122 nchar = len >> 2;
123 break;
124
125 case MBSTRING_UTF8:
126 nchar = 0;
127 /* This counts the characters and does utf8 syntax checking */
128 ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
129 if(ret < 0) {
130 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
131 ASN1_R_INVALID_UTF8STRING);
132 return -1;
133 }
134 break;
135
136 case MBSTRING_ASC:
137 nchar = len;
138 break;
139
140 default:
141 ASN1err(ASN1_F_ASN1_MBSTRING_COPY, ASN1_R_UNKNOWN_FORMAT);
142 return -1;
143 }
144
145 if((minsize > 0) && (nchar < minsize)) {
146 ASN1err(ASN1_F_ASN1_MBSTRING_COPY, ASN1_R_STRING_TOO_SHORT);
147 sprintf(strbuf, "%ld", minsize);
148 ERR_add_error_data(2, "minsize=", strbuf);
149 return -1;
150 }
151
152 if((maxsize > 0) && (nchar > maxsize)) {
153 ASN1err(ASN1_F_ASN1_MBSTRING_COPY, ASN1_R_STRING_TOO_LONG);
154 sprintf(strbuf, "%ld", maxsize);
155 ERR_add_error_data(2, "maxsize=", strbuf);
156 return -1;
157 }
158
159 /* Now work out minimal type (if any) */
160 if(traverse_string(in, len, inform, type_str, &mask) < 0) {
161 ASN1err(ASN1_F_ASN1_MBSTRING_COPY, ASN1_R_ILLEGAL_CHARACTERS);
162 return -1;
163 }
164
165
166 /* Now work out output format and string type */
167 outform = MBSTRING_ASC;
168 if(mask & B_ASN1_PRINTABLESTRING) str_type = V_ASN1_PRINTABLESTRING;
169 else if(mask & B_ASN1_IA5STRING) str_type = V_ASN1_IA5STRING;
170 else if(mask & B_ASN1_T61STRING) str_type = V_ASN1_T61STRING;
171 else if(mask & B_ASN1_BMPSTRING) {
172 str_type = V_ASN1_BMPSTRING;
173 outform = MBSTRING_BMP;
174 } else if(mask & B_ASN1_UNIVERSALSTRING) {
175 str_type = V_ASN1_UNIVERSALSTRING;
176 outform = MBSTRING_UNIV;
177 } else {
178 str_type = V_ASN1_UTF8STRING;
179 outform = MBSTRING_UTF8;
180 }
181 if(!out) return str_type;
182 if(*out) {
183 dest = *out;
184 if(dest->data) {
185 dest->length = 0;
186 Free(dest->data);
187 dest->data = NULL;
188 }
189 dest->type = str_type;
190 } else {
191 dest = ASN1_STRING_type_new(str_type);
192 if(!dest) {
193 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
194 ERR_R_MALLOC_FAILURE);
195 return -1;
196 }
197 *out = dest;
198 }
199 /* If both the same type just copy across */
200 if(inform == outform) {
201 if(!ASN1_STRING_set(dest, in, len)) {
202 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,ERR_R_MALLOC_FAILURE);
203 return -1;
204 }
205 return str_type;
206 }
207
208 /* Work out how much space the destination will need */
209 switch(outform) {
210 case MBSTRING_ASC:
211 outlen = nchar;
212 cpyfunc = cpy_asc;
213 break;
214
215 case MBSTRING_BMP:
216 outlen = nchar << 1;
217 cpyfunc = cpy_bmp;
218 break;
219
220 case MBSTRING_UNIV:
221 outlen = nchar << 2;
222 cpyfunc = cpy_univ;
223 break;
224
225 case MBSTRING_UTF8:
226 outlen = 0;
227 traverse_string(in, len, inform, out_utf8, &outlen);
228 cpyfunc = cpy_utf8;
229 break;
230 }
231 if(!(p = Malloc(outlen + 1))) {
232 ASN1_STRING_free(dest);
233 ASN1err(ASN1_F_ASN1_MBSTRING_COPY,ERR_R_MALLOC_FAILURE);
234 return -1;
235 }
236 dest->length = outlen;
237 dest->data = p;
238 p[outlen] = 0;
239 traverse_string(in, len, inform, cpyfunc, &p);
240 return str_type;
241}
242
243/* This function traverses a string and passes the value of each character
244 * to an optional function along with a void * argument.
245 */
246
247static int traverse_string(const unsigned char *p, int len, int inform,
248 int (*rfunc)(unsigned long value, void *in), void *arg)
249{
250 unsigned long value;
251 int ret;
252 while(len) {
253 if(inform == MBSTRING_ASC) {
254 value = *p++;
255 len--;
256 } else if(inform == MBSTRING_BMP) {
257 value = *p++ << 8;
258 value |= *p++;
259 len -= 2;
260 } else if(inform == MBSTRING_UNIV) {
261 value = *p++ << 24;
262 value |= *p++ << 16;
263 value |= *p++ << 8;
264 value |= *p++;
265 len -= 4;
266 } else {
267 ret = UTF8_getc(p, len, &value);
268 if(ret < 0) return -1;
269 len -= ret;
270 p += ret;
271 }
272 if(rfunc) {
273 ret = rfunc(value, arg);
274 if(ret <= 0) return ret;
275 }
276 }
277 return 1;
278}
279
280/* Various utility functions for traverse_string */
281
282/* Just count number of characters */
283
284static int in_utf8(unsigned long value, void *arg)
285{
286 int *nchar;
287 nchar = arg;
288 (*nchar)++;
289 return 1;
290}
291
292/* Determine size of output as a UTF8 String */
293
294static int out_utf8(unsigned long value, void *arg)
295{
296 long *outlen;
297 outlen = arg;
298 *outlen += UTF8_putc(NULL, -1, value);
299 return 1;
300}
301
302/* Determine the "type" of a string: check each character against a
303 * supplied "mask".
304 */
305
306static int type_str(unsigned long value, void *arg)
307{
308 unsigned long types;
309 types = *((unsigned long *)arg);
310 if((types & B_ASN1_PRINTABLESTRING) && !is_printable(value))
311 types &= ~B_ASN1_PRINTABLESTRING;
312 if((types & B_ASN1_IA5STRING) && (value > 127))
313 types &= ~B_ASN1_IA5STRING;
314 if((types & B_ASN1_T61STRING) && (value > 0xff))
315 types &= ~B_ASN1_T61STRING;
316 if((types & B_ASN1_BMPSTRING) && (value > 0xffff))
317 types &= ~B_ASN1_BMPSTRING;
318 if(!types) return -1;
319 *((unsigned long *)arg) = types;
320 return 1;
321}
322
323/* Copy one byte per character ASCII like strings */
324
325static int cpy_asc(unsigned long value, void *arg)
326{
327 unsigned char **p, *q;
328 p = arg;
329 q = *p;
330 *q = (unsigned char) value;
331 (*p)++;
332 return 1;
333}
334
335/* Copy two byte per character BMPStrings */
336
337static int cpy_bmp(unsigned long value, void *arg)
338{
339 unsigned char **p, *q;
340 p = arg;
341 q = *p;
342 *q++ = (unsigned char) ((value >> 8) & 0xff);
343 *q = (unsigned char) (value & 0xff);
344 *p += 2;
345 return 1;
346}
347
348/* Copy four byte per character UniversalStrings */
349
350static int cpy_univ(unsigned long value, void *arg)
351{
352 unsigned char **p, *q;
353 p = arg;
354 q = *p;
355 *q++ = (unsigned char) ((value >> 24) & 0xff);
356 *q++ = (unsigned char) ((value >> 16) & 0xff);
357 *q++ = (unsigned char) ((value >> 8) & 0xff);
358 *q = (unsigned char) (value & 0xff);
359 *p += 4;
360 return 1;
361}
362
363/* Copy to a UTF8String */
364
365static int cpy_utf8(unsigned long value, void *arg)
366{
367 unsigned char **p;
368 int ret;
369 p = arg;
370 /* We already know there is enough room so pass 0xff as the length */
371 ret = UTF8_putc(*p, 0xff, value);
372 *p += ret;
373 return 1;
374}
375
376/* Return 1 if the character is permitted in a PrintableString */
377static int is_printable(unsigned long value)
378{
379 int ch;
380 if(value > 0x7f) return 0;
381 ch = (int) value;
382 /* Note: we can't use 'isalnum' because certain accented
383 * characters may count as alphanumeric in some environments.
384 */
385 if((ch >= 'a') && (ch <= 'z')) return 1;
386 if((ch >= 'A') && (ch <= 'Z')) return 1;
387 if((ch >= '0') && (ch <= '9')) return 1;
388 if ((ch == ' ') || strchr("'()+,-./:=?", ch)) return 1;
389 return 0;
390}
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