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
66 static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
67 static void st_free(ASN1_STRING_TABLE *tbl);
68
69 /*
70 * This is the global mask for the mbstring functions: this is use to mask
71 * out certain types (such as BMPString and UTF8String) because certain
72 * software (e.g. Netscape) has problems with them.
73 */
74
75 static unsigned long global_mask = B_ASN1_UTF8STRING;
76
ASN1_STRING_set_default_mask(unsigned long mask)77 void ASN1_STRING_set_default_mask(unsigned long mask)
78 {
79 global_mask = mask;
80 }
81
ASN1_STRING_get_default_mask(void)82 unsigned long ASN1_STRING_get_default_mask(void)
83 {
84 return global_mask;
85 }
86
87 /*
88 * This function sets the default to various "flavours" of configuration.
89 * based on an ASCII string. Currently this is: MASK:XXXX : a numerical mask
90 * value. nobmp : Don't use BMPStrings (just Printable, T61). pkix : PKIX
91 * recommendation in RFC2459. utf8only : only use UTF8Strings (RFC2459
92 * recommendation for 2004). default: the default value, Printable, T61, BMP.
93 */
94
ASN1_STRING_set_default_mask_asc(const char * p)95 int ASN1_STRING_set_default_mask_asc(const char *p)
96 {
97 unsigned long mask;
98 char *end;
99 if (!strncmp(p, "MASK:", 5)) {
100 if (!p[5])
101 return 0;
102 mask = strtoul(p + 5, &end, 0);
103 if (*end)
104 return 0;
105 } else if (!strcmp(p, "nombstr"))
106 mask = ~((unsigned long)(B_ASN1_BMPSTRING | B_ASN1_UTF8STRING));
107 else if (!strcmp(p, "pkix"))
108 mask = ~((unsigned long)B_ASN1_T61STRING);
109 else if (!strcmp(p, "utf8only"))
110 mask = B_ASN1_UTF8STRING;
111 else if (!strcmp(p, "default"))
112 mask = 0xFFFFFFFFL;
113 else
114 return 0;
115 ASN1_STRING_set_default_mask(mask);
116 return 1;
117 }
118
119 /*
120 * The following function generates an ASN1_STRING based on limits in a
121 * table. Frequently the types and length of an ASN1_STRING are restricted by
122 * a corresponding OID. For example certificates and certificate requests.
123 */
124
ASN1_STRING_set_by_NID(ASN1_STRING ** out,const unsigned char * in,int inlen,int inform,int nid)125 ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out,
126 const unsigned char *in, int inlen,
127 int inform, int nid)
128 {
129 ASN1_STRING_TABLE *tbl;
130 ASN1_STRING *str = NULL;
131 unsigned long mask;
132 int ret;
133 if (!out)
134 out = &str;
135 tbl = ASN1_STRING_TABLE_get(nid);
136 if (tbl) {
137 mask = tbl->mask;
138 if (!(tbl->flags & STABLE_NO_MASK))
139 mask &= global_mask;
140 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
141 tbl->minsize, tbl->maxsize);
142 } else
143 ret =
144 ASN1_mbstring_copy(out, in, inlen, inform,
145 DIRSTRING_TYPE & global_mask);
146 if (ret <= 0)
147 return NULL;
148 return *out;
149 }
150
151 /*
152 * Now the tables and helper functions for the string table:
153 */
154
155 /* size limits: this stuff is taken straight from RFC3280 */
156
157 #define ub_name 32768
158 #define ub_common_name 64
159 #define ub_locality_name 128
160 #define ub_state_name 128
161 #define ub_organization_name 64
162 #define ub_organization_unit_name 64
163 #define ub_title 64
164 #define ub_email_address 128
165 #define ub_serial_number 64
166
167 /* This table must be kept in NID order */
168
169 static const ASN1_STRING_TABLE tbl_standard[] = {
170 {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
171 {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
172 {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
173 {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
174 {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
175 {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE,
176 0},
177 {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING,
178 STABLE_NO_MASK},
179 {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
180 {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
181 {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
182 {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
183 {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
184 {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
185 {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING,
186 STABLE_NO_MASK},
187 {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
188 {NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
189 {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
190 {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
191 {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}
192 };
193
sk_table_cmp(const ASN1_STRING_TABLE ** a,const ASN1_STRING_TABLE ** b)194 static int sk_table_cmp(const ASN1_STRING_TABLE **a,
195 const ASN1_STRING_TABLE **b)
196 {
197 return (*a)->nid - (*b)->nid;
198 }
199
table_cmp(const void * in_a,const void * in_b)200 static int table_cmp(const void *in_a, const void *in_b)
201 {
202 const ASN1_STRING_TABLE *a = in_a;
203 const ASN1_STRING_TABLE *b = in_b;
204 return a->nid - b->nid;
205 }
206
ASN1_STRING_TABLE_get(int nid)207 ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid)
208 {
209 int found;
210 size_t idx;
211 ASN1_STRING_TABLE *ttmp;
212 ASN1_STRING_TABLE fnd;
213 fnd.nid = nid;
214
215 ttmp =
216 bsearch(&fnd, tbl_standard,
217 sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE),
218 sizeof(ASN1_STRING_TABLE), table_cmp);
219 if (ttmp)
220 return ttmp;
221 if (!stable)
222 return NULL;
223 found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd);
224 if (!found)
225 return NULL;
226 return sk_ASN1_STRING_TABLE_value(stable, idx);
227 }
228
ASN1_STRING_TABLE_add(int nid,long minsize,long maxsize,unsigned long mask,unsigned long flags)229 int ASN1_STRING_TABLE_add(int nid,
230 long minsize, long maxsize, unsigned long mask,
231 unsigned long flags)
232 {
233 ASN1_STRING_TABLE *tmp;
234 char new_nid = 0;
235 flags &= ~STABLE_FLAGS_MALLOC;
236 if (!stable)
237 stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
238 if (!stable) {
239 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
240 return 0;
241 }
242 if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
243 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE));
244 if (!tmp) {
245 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
246 return 0;
247 }
248 tmp->flags = flags | STABLE_FLAGS_MALLOC;
249 tmp->nid = nid;
250 tmp->minsize = tmp->maxsize = -1;
251 new_nid = 1;
252 } else
253 tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
254 if (minsize != -1)
255 tmp->minsize = minsize;
256 if (maxsize != -1)
257 tmp->maxsize = maxsize;
258 tmp->mask = mask;
259 if (new_nid)
260 sk_ASN1_STRING_TABLE_push(stable, tmp);
261 return 1;
262 }
263
ASN1_STRING_TABLE_cleanup(void)264 void ASN1_STRING_TABLE_cleanup(void)
265 {
266 STACK_OF(ASN1_STRING_TABLE) *tmp;
267 tmp = stable;
268 if (!tmp)
269 return;
270 stable = NULL;
271 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
272 }
273
st_free(ASN1_STRING_TABLE * tbl)274 static void st_free(ASN1_STRING_TABLE *tbl)
275 {
276 if (tbl->flags & STABLE_FLAGS_MALLOC)
277 OPENSSL_free(tbl);
278 }
279
280 #ifdef STRING_TABLE_TEST
281
main(void)282 int main(void)
283 {
284 ASN1_STRING_TABLE *tmp;
285 int i, last_nid = -1;
286
287 for (tmp = tbl_standard, i = 0;
288 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++) {
289 if (tmp->nid < last_nid) {
290 last_nid = 0;
291 break;
292 }
293 last_nid = tmp->nid;
294 }
295
296 if (last_nid != 0) {
297 printf("Table order OK\n");
298 exit(0);
299 }
300
301 for (tmp = tbl_standard, i = 0;
302 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++)
303 printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
304 OBJ_nid2ln(tmp->nid));
305
306 return 0;
307 }
308
309 #endif
310