1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#include <openssl/asn1.h>
58
59#include <stdlib.h> /* For bsearch */
60#include <string.h>
61
62#include <openssl/err.h>
63#include <openssl/mem.h>
64#include <openssl/obj.h>
65#include <openssl/stack.h>
66
67DEFINE_STACK_OF(ASN1_STRING_TABLE)
68
69static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
70static void st_free(ASN1_STRING_TABLE *tbl);
71
72/*
73 * This is the global mask for the mbstring functions: this is use to mask
74 * out certain types (such as BMPString and UTF8String) because certain
75 * software (e.g. Netscape) has problems with them.
76 */
77
78static unsigned long global_mask = B_ASN1_UTF8STRING;
79
80void ASN1_STRING_set_default_mask(unsigned long mask)
81{
82 global_mask = mask;
83}
84
85unsigned long ASN1_STRING_get_default_mask(void)
86{
87 return global_mask;
88}
89
90/*
91 * This function sets the default to various "flavours" of configuration.
92 * based on an ASCII string. Currently this is: MASK:XXXX : a numerical mask
93 * value. nobmp : Don't use BMPStrings (just Printable, T61). pkix : PKIX
94 * recommendation in RFC2459. utf8only : only use UTF8Strings (RFC2459
95 * recommendation for 2004). default: the default value, Printable, T61, BMP.
96 */
97
98int ASN1_STRING_set_default_mask_asc(const char *p)
99{
100 unsigned long mask;
101 char *end;
102 if (!strncmp(p, "MASK:", 5)) {
103 if (!p[5])
104 return 0;
105 mask = strtoul(p + 5, &end, 0);
106 if (*end)
107 return 0;
108 } else if (!strcmp(p, "nombstr"))
109 mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
110 else if (!strcmp(p, "pkix"))
111 mask = ~((unsigned long)B_ASN1_T61STRING);
112 else if (!strcmp(p, "utf8only"))
113 mask = B_ASN1_UTF8STRING;
114 else if (!strcmp(p, "default"))
115 mask = 0xFFFFFFFFL;
116 else
117 return 0;
118 ASN1_STRING_set_default_mask(mask);
119 return 1;
120}
121
122/*
123 * The following function generates an ASN1_STRING based on limits in a
124 * table. Frequently the types and length of an ASN1_STRING are restricted by
125 * a corresponding OID. For example certificates and certificate requests.
126 */
127
128ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
129 const unsigned char *in, int inlen,
130 int inform, int nid)
131{
132 ASN1_STRING_TABLE *tbl;
133 ASN1_STRING *str = NULL;
134 unsigned long mask;
135 int ret;
136 if (!out)
137 out = &str;
138 tbl = ASN1_STRING_TABLE_get(nid);
139 if (tbl) {
140 mask = tbl->mask;
141 if (!(tbl->flags & STABLE_NO_MASK))
142 mask &= global_mask;
143 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
144 tbl->minsize, tbl->maxsize);
145 } else
146 ret =
147 ASN1_mbstring_copy(out, in, inlen, inform,
148 DIRSTRING_TYPE & global_mask);
149 if (ret <= 0)
150 return NULL;
151 return *out;
152}
153
154/*
155 * Now the tables and helper functions for the string table:
156 */
157
158/* size limits: this stuff is taken straight from RFC3280 */
159
160#define ub_name 32768
161#define ub_common_name 64
162#define ub_locality_name 128
163#define ub_state_name 128
164#define ub_organization_name 64
165#define ub_organization_unit_name 64
166#define ub_title 64
167#define ub_email_address 128
168#define ub_serial_number 64
169
170/* This table must be kept in NID order */
171
172static const ASN1_STRING_TABLE tbl_standard[] = {
173 {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
174 {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
175 {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
176 {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
177 {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
178 {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE,
179 0},
180 {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING,
181 STABLE_NO_MASK},
182 {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
183 {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
184 {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
185 {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
186 {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
187 {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
188 {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING,
189 STABLE_NO_MASK},
190 {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
191 {NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
192 {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
193 {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
194 {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}
195};
196
197static int sk_table_cmp(const ASN1_STRING_TABLE **a,
198 const ASN1_STRING_TABLE **b)
199{
200 return (*a)->nid - (*b)->nid;
201}
202
203static int table_cmp(const void *in_a, const void *in_b)
204{
205 const ASN1_STRING_TABLE *a = in_a;
206 const ASN1_STRING_TABLE *b = in_b;
207 return a->nid - b->nid;
208}
209
210ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
211{
212 int found;
213 size_t idx;
214 ASN1_STRING_TABLE *ttmp;
215 ASN1_STRING_TABLE fnd;
216 fnd.nid = nid;
217
218 ttmp =
219 bsearch(&fnd, tbl_standard,
220 sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE),
221 sizeof(ASN1_STRING_TABLE), table_cmp);
222 if (ttmp)
223 return ttmp;
224 if (!stable)
225 return NULL;
226 sk_ASN1_STRING_TABLE_sort(stable);
227 found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd);
228 if (!found)
229 return NULL;
230 return sk_ASN1_STRING_TABLE_value(stable, idx);
231}
232
233int ASN1_STRING_TABLE_add(int nid,
234 long minsize, long maxsize, unsigned long mask,
235 unsigned long flags)
236{
237 ASN1_STRING_TABLE *tmp;
238 char new_nid = 0;
239 flags &= ~STABLE_FLAGS_MALLOC;
240 if (!stable)
241 stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
242 if (!stable) {
243 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
244 return 0;
245 }
246 if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
247 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE));
248 if (!tmp) {
249 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
250 return 0;
251 }
252 tmp->flags = flags | STABLE_FLAGS_MALLOC;
253 tmp->nid = nid;
254 tmp->minsize = tmp->maxsize = -1;
255 new_nid = 1;
256 } else
257 tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
258 if (minsize != -1)
259 tmp->minsize = minsize;
260 if (maxsize != -1)
261 tmp->maxsize = maxsize;
262 tmp->mask = mask;
263 if (new_nid)
264 sk_ASN1_STRING_TABLE_push(stable, tmp);
265 return 1;
266}
267
268void ASN1_STRING_TABLE_cleanup(void)
269{
270 STACK_OF(ASN1_STRING_TABLE) *tmp;
271 tmp = stable;
272 if (!tmp)
273 return;
274 stable = NULL;
275 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
276}
277
278static void st_free(ASN1_STRING_TABLE *tbl)
279{
280 if (tbl->flags & STABLE_FLAGS_MALLOC)
281 OPENSSL_free(tbl);
282}
283
284#ifdef STRING_TABLE_TEST
285
286int main(void)
287{
288 ASN1_STRING_TABLE *tmp;
289 int i, last_nid = -1;
290
291 for (tmp = tbl_standard, i = 0;
292 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++) {
293 if (tmp->nid < last_nid) {
294 last_nid = 0;
295 break;
296 }
297 last_nid = tmp->nid;
298 }
299
300 if (last_nid != 0) {
301 printf("Table order OK\n");
302 exit(0);
303 }
304
305 for (tmp = tbl_standard, i = 0;
306 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++)
307 printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
308 OBJ_nid2ln(tmp->nid));
309
310 return 0;
311}
312
313#endif
314