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