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 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 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 /* 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 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 */ 120 121 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 }; 179 180 static int sk_table_cmp(const ASN1_STRING_TABLE **a, 181 const ASN1_STRING_TABLE **b) 182 { 183 return (*a)->nid - (*b)->nid; 184 } 185 186 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 } 192 193 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 } 208 209 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 } 237 238 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 } 246 247 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 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
