1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 77 void ASN1_STRING_set_default_mask(unsigned long mask) 78 { 79 global_mask = mask; 80 } 81 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 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 */ 124 125 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 }; 193 194 static int sk_table_cmp(const ASN1_STRING_TABLE **a, 195 const ASN1_STRING_TABLE **b) 196 { 197 return (*a)->nid - (*b)->nid; 198 } 199 200 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 } 206 207 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 } 228 229 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 } 263 264 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 } 273 274 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 281 282 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
