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 #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 80 void ASN1_STRING_set_default_mask(unsigned long mask) 81 { 82 global_mask = mask; 83 } 84 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 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 */ 127 128 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 }; 196 197 static int sk_table_cmp(const ASN1_STRING_TABLE **a, 198 const ASN1_STRING_TABLE **b) 199 { 200 return (*a)->nid - (*b)->nid; 201 } 202 203 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 } 209 210 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 } 231 232 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 } 266 267 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 } 276 277 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 284 285 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
