1 /* a_strnid.c */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 1999. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stdio.h> 60 #include <ctype.h> 61 #include "cryptlib.h" 62 #include <openssl/asn1.h> 63 #include <openssl/objects.h> 64 65 66 static STACK_OF(ASN1_STRING_TABLE) *stable = NULL; 67 static void st_free(ASN1_STRING_TABLE *tbl); 68 static int sk_table_cmp(const ASN1_STRING_TABLE * const *a, 69 const ASN1_STRING_TABLE * const *b); 70 71 72 /* This is the global mask for the mbstring functions: this is use to 73 * mask out certain types (such as BMPString and UTF8String) because 74 * certain software (e.g. Netscape) has problems with them. 75 */ 76 77 static unsigned long global_mask = 0xFFFFFFFFL; 78 79 void ASN1_STRING_set_default_mask(unsigned long mask) 80 { 81 global_mask = mask; 82 } 83 84 unsigned long ASN1_STRING_get_default_mask(void) 85 { 86 return global_mask; 87 } 88 89 /* This function sets the default to various "flavours" of configuration. 90 * based on an ASCII string. Currently this is: 91 * MASK:XXXX : a numerical mask value. 92 * nobmp : Don't use BMPStrings (just Printable, T61). 93 * pkix : PKIX recommendation in RFC2459. 94 * utf8only : only use UTF8Strings (RFC2459 recommendation for 2004). 95 * 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]) return 0; 104 mask = strtoul(p + 5, &end, 0); 105 if(*end) return 0; 106 } else if(!strcmp(p, "nombstr")) 107 mask = ~((unsigned long)(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)); 108 else if(!strcmp(p, "pkix")) 109 mask = ~((unsigned long)B_ASN1_T61STRING); 110 else if(!strcmp(p, "utf8only")) mask = B_ASN1_UTF8STRING; 111 else if(!strcmp(p, "default")) 112 mask = 0xFFFFFFFFL; 113 else return 0; 114 ASN1_STRING_set_default_mask(mask); 115 return 1; 116 } 117 118 /* The following function generates an ASN1_STRING based on limits in a table. 119 * Frequently the types and length of an ASN1_STRING are restricted by a 120 * corresponding OID. For example certificates and certificate requests. 121 */ 122 123 ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, 124 int inlen, int inform, int nid) 125 { 126 ASN1_STRING_TABLE *tbl; 127 ASN1_STRING *str = NULL; 128 unsigned long mask; 129 int ret; 130 if(!out) out = &str; 131 tbl = ASN1_STRING_TABLE_get(nid); 132 if(tbl) { 133 mask = tbl->mask; 134 if(!(tbl->flags & STABLE_NO_MASK)) mask &= global_mask; 135 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask, 136 tbl->minsize, tbl->maxsize); 137 } else ret = ASN1_mbstring_copy(out, in, inlen, inform, DIRSTRING_TYPE & global_mask); 138 if(ret <= 0) return NULL; 139 return *out; 140 } 141 142 /* Now the tables and helper functions for the string table: 143 */ 144 145 /* size limits: this stuff is taken straight from RFC3280 */ 146 147 #define ub_name 32768 148 #define ub_common_name 64 149 #define ub_locality_name 128 150 #define ub_state_name 128 151 #define ub_organization_name 64 152 #define ub_organization_unit_name 64 153 #define ub_title 64 154 #define ub_email_address 128 155 #define ub_serial_number 64 156 157 158 /* This table must be kept in NID order */ 159 160 static const ASN1_STRING_TABLE tbl_standard[] = { 161 {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0}, 162 {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 163 {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0}, 164 {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0}, 165 {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0}, 166 {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE, 0}, 167 {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING, STABLE_NO_MASK}, 168 {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0}, 169 {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0}, 170 {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0}, 171 {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0}, 172 {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0}, 173 {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0}, 174 {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 175 {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}, 176 {NID_name, 1, ub_name, DIRSTRING_TYPE, 0}, 177 {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 178 {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK}, 179 {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK} 180 }; 181 182 static int sk_table_cmp(const ASN1_STRING_TABLE * const *a, 183 const ASN1_STRING_TABLE * const *b) 184 { 185 return (*a)->nid - (*b)->nid; 186 } 187 188 DECLARE_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table); 189 190 static int table_cmp(const ASN1_STRING_TABLE *a, const ASN1_STRING_TABLE *b) 191 { 192 return a->nid - b->nid; 193 } 194 195 IMPLEMENT_OBJ_BSEARCH_CMP_FN(ASN1_STRING_TABLE, ASN1_STRING_TABLE, table); 196 197 ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid) 198 { 199 int idx; 200 ASN1_STRING_TABLE *ttmp; 201 ASN1_STRING_TABLE fnd; 202 fnd.nid = nid; 203 ttmp = OBJ_bsearch_table(&fnd, tbl_standard, 204 sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE)); 205 if(ttmp) return ttmp; 206 if(!stable) return NULL; 207 idx = sk_ASN1_STRING_TABLE_find(stable, &fnd); 208 if(idx < 0) return NULL; 209 return sk_ASN1_STRING_TABLE_value(stable, idx); 210 } 211 212 int ASN1_STRING_TABLE_add(int nid, 213 long minsize, long maxsize, unsigned long mask, 214 unsigned long flags) 215 { 216 ASN1_STRING_TABLE *tmp; 217 char new_nid = 0; 218 flags &= ~STABLE_FLAGS_MALLOC; 219 if(!stable) stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp); 220 if(!stable) { 221 ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, ERR_R_MALLOC_FAILURE); 222 return 0; 223 } 224 if(!(tmp = ASN1_STRING_TABLE_get(nid))) { 225 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE)); 226 if(!tmp) { 227 ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, 228 ERR_R_MALLOC_FAILURE); 229 return 0; 230 } 231 tmp->flags = flags | STABLE_FLAGS_MALLOC; 232 tmp->nid = nid; 233 new_nid = 1; 234 } else tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags; 235 if(minsize != -1) tmp->minsize = minsize; 236 if(maxsize != -1) tmp->maxsize = maxsize; 237 tmp->mask = mask; 238 if(new_nid) sk_ASN1_STRING_TABLE_push(stable, tmp); 239 return 1; 240 } 241 242 void ASN1_STRING_TABLE_cleanup(void) 243 { 244 STACK_OF(ASN1_STRING_TABLE) *tmp; 245 tmp = stable; 246 if(!tmp) return; 247 stable = NULL; 248 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free); 249 } 250 251 static void st_free(ASN1_STRING_TABLE *tbl) 252 { 253 if(tbl->flags & STABLE_FLAGS_MALLOC) OPENSSL_free(tbl); 254 } 255 256 257 IMPLEMENT_STACK_OF(ASN1_STRING_TABLE) 258 259 #ifdef STRING_TABLE_TEST 260 261 main() 262 { 263 ASN1_STRING_TABLE *tmp; 264 int i, last_nid = -1; 265 266 for (tmp = tbl_standard, i = 0; 267 i < sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE); i++, tmp++) 268 { 269 if (tmp->nid < last_nid) 270 { 271 last_nid = 0; 272 break; 273 } 274 last_nid = tmp->nid; 275 } 276 277 if (last_nid != 0) 278 { 279 printf("Table order OK\n"); 280 exit(0); 281 } 282 283 for (tmp = tbl_standard, i = 0; 284 i < sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE); i++, tmp++) 285 printf("Index %d, NID %d, Name=%s\n", i, tmp->nid, 286 OBJ_nid2ln(tmp->nid)); 287 288 } 289 290 #endif 291