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
67 DEFINE_STACK_OF(ASN1_STRING_TABLE)
68
69 static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
70 static 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
78 static unsigned long global_mask = B_ASN1_UTF8STRING;
79
ASN1_STRING_set_default_mask(unsigned long mask)80 void ASN1_STRING_set_default_mask(unsigned long mask)
81 {
82 global_mask = mask;
83 }
84
ASN1_STRING_get_default_mask(void)85 unsigned 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
ASN1_STRING_set_default_mask_asc(const char * p)98 int 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
ASN1_STRING_set_by_NID(ASN1_STRING ** out,const unsigned char * in,int inlen,int inform,int nid)128 ASN1_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
172 static 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
sk_table_cmp(const ASN1_STRING_TABLE ** a,const ASN1_STRING_TABLE ** b)197 static int sk_table_cmp(const ASN1_STRING_TABLE **a,
198 const ASN1_STRING_TABLE **b)
199 {
200 return (*a)->nid - (*b)->nid;
201 }
202
table_cmp(const void * in_a,const void * in_b)203 static 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
ASN1_STRING_TABLE_get(int nid)210 ASN1_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 found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd);
227 if (!found)
228 return NULL;
229 return sk_ASN1_STRING_TABLE_value(stable, idx);
230 }
231
ASN1_STRING_TABLE_add(int nid,long minsize,long maxsize,unsigned long mask,unsigned long flags)232 int ASN1_STRING_TABLE_add(int nid,
233 long minsize, long maxsize, unsigned long mask,
234 unsigned long flags)
235 {
236 ASN1_STRING_TABLE *tmp;
237 char new_nid = 0;
238 flags &= ~STABLE_FLAGS_MALLOC;
239 if (!stable)
240 stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
241 if (!stable) {
242 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
243 return 0;
244 }
245 if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
246 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE));
247 if (!tmp) {
248 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
249 return 0;
250 }
251 tmp->flags = flags | STABLE_FLAGS_MALLOC;
252 tmp->nid = nid;
253 tmp->minsize = tmp->maxsize = -1;
254 new_nid = 1;
255 } else
256 tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
257 if (minsize != -1)
258 tmp->minsize = minsize;
259 if (maxsize != -1)
260 tmp->maxsize = maxsize;
261 tmp->mask = mask;
262 if (new_nid)
263 sk_ASN1_STRING_TABLE_push(stable, tmp);
264 return 1;
265 }
266
ASN1_STRING_TABLE_cleanup(void)267 void ASN1_STRING_TABLE_cleanup(void)
268 {
269 STACK_OF(ASN1_STRING_TABLE) *tmp;
270 tmp = stable;
271 if (!tmp)
272 return;
273 stable = NULL;
274 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
275 }
276
st_free(ASN1_STRING_TABLE * tbl)277 static void st_free(ASN1_STRING_TABLE *tbl)
278 {
279 if (tbl->flags & STABLE_FLAGS_MALLOC)
280 OPENSSL_free(tbl);
281 }
282
283 #ifdef STRING_TABLE_TEST
284
main(void)285 int main(void)
286 {
287 ASN1_STRING_TABLE *tmp;
288 int i, last_nid = -1;
289
290 for (tmp = tbl_standard, i = 0;
291 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++) {
292 if (tmp->nid < last_nid) {
293 last_nid = 0;
294 break;
295 }
296 last_nid = tmp->nid;
297 }
298
299 if (last_nid != 0) {
300 printf("Table order OK\n");
301 exit(0);
302 }
303
304 for (tmp = tbl_standard, i = 0;
305 i < sizeof(tbl_standard) / sizeof(ASN1_STRING_TABLE); i++, tmp++)
306 printf("Index %d, NID %d, Name=%s\n", i, tmp->nid,
307 OBJ_nid2ln(tmp->nid));
308
309 return 0;
310 }
311
312 #endif
313