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 61 #include <openssl/err.h> 62 #include <openssl/mem.h> 63 #include <openssl/obj.h> 64 65 66 static STACK_OF(ASN1_STRING_TABLE) *stable = NULL; 67 static void st_free(ASN1_STRING_TABLE *tbl); 68 69 /* This is the global mask for the mbstring functions: this is use to 70 * mask out certain types (such as BMPString and UTF8String) because 71 * certain software (e.g. Netscape) has problems with them. 72 */ 73 74 static unsigned long global_mask = B_ASN1_UTF8STRING; 75 76 void ASN1_STRING_set_default_mask(unsigned long mask) 77 { 78 global_mask = mask; 79 } 80 81 unsigned long ASN1_STRING_get_default_mask(void) 82 { 83 return global_mask; 84 } 85 86 /* This function sets the default to various "flavours" of configuration. 87 * based on an ASCII string. Currently this is: 88 * MASK:XXXX : a numerical mask value. 89 * nobmp : Don't use BMPStrings (just Printable, T61). 90 * pkix : PKIX recommendation in RFC2459. 91 * utf8only : only use UTF8Strings (RFC2459 recommendation for 2004). 92 * 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]) return 0; 101 mask = strtoul(p + 5, &end, 0); 102 if(*end) return 0; 103 } else if(!strcmp(p, "nombstr")) 104 mask = ~((unsigned long)(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)); 105 else if(!strcmp(p, "pkix")) 106 mask = ~((unsigned long)B_ASN1_T61STRING); 107 else if(!strcmp(p, "utf8only")) mask = B_ASN1_UTF8STRING; 108 else if(!strcmp(p, "default")) 109 mask = 0xFFFFFFFFL; 110 else return 0; 111 ASN1_STRING_set_default_mask(mask); 112 return 1; 113 } 114 115 /* The following function generates an ASN1_STRING based on limits in a table. 116 * Frequently the types and length of an ASN1_STRING are restricted by a 117 * corresponding OID. For example certificates and certificate requests. 118 */ 119 120 ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, 121 int inlen, int inform, int nid) 122 { 123 ASN1_STRING_TABLE *tbl; 124 ASN1_STRING *str = NULL; 125 unsigned long mask; 126 int ret; 127 if(!out) out = &str; 128 tbl = ASN1_STRING_TABLE_get(nid); 129 if(tbl) { 130 mask = tbl->mask; 131 if(!(tbl->flags & STABLE_NO_MASK)) mask &= global_mask; 132 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask, 133 tbl->minsize, tbl->maxsize); 134 } else ret = ASN1_mbstring_copy(out, in, inlen, inform, DIRSTRING_TYPE & global_mask); 135 if(ret <= 0) return NULL; 136 return *out; 137 } 138 139 /* Now the tables and helper functions for the string table: 140 */ 141 142 /* size limits: this stuff is taken straight from RFC3280 */ 143 144 #define ub_name 32768 145 #define ub_common_name 64 146 #define ub_locality_name 128 147 #define ub_state_name 128 148 #define ub_organization_name 64 149 #define ub_organization_unit_name 64 150 #define ub_title 64 151 #define ub_email_address 128 152 #define ub_serial_number 64 153 154 155 /* This table must be kept in NID order */ 156 157 static const ASN1_STRING_TABLE tbl_standard[] = { 158 {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0}, 159 {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 160 {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0}, 161 {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0}, 162 {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0}, 163 {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE, 0}, 164 {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING, STABLE_NO_MASK}, 165 {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0}, 166 {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0}, 167 {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0}, 168 {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0}, 169 {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0}, 170 {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0}, 171 {NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 172 {NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}, 173 {NID_name, 1, ub_name, DIRSTRING_TYPE, 0}, 174 {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 175 {NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK}, 176 {NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK} 177 }; 178 179 static int sk_table_cmp(const ASN1_STRING_TABLE **a, 180 const ASN1_STRING_TABLE **b) 181 { 182 return (*a)->nid - (*b)->nid; 183 } 184 185 static int table_cmp(const void *in_a, const void *in_b) 186 { 187 const ASN1_STRING_TABLE *a = in_a; 188 const ASN1_STRING_TABLE *b = in_b; 189 return a->nid - b->nid; 190 } 191 192 ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid) 193 { 194 int found; 195 size_t idx; 196 ASN1_STRING_TABLE *ttmp; 197 ASN1_STRING_TABLE fnd; 198 fnd.nid = nid; 199 200 ttmp = bsearch(&fnd, tbl_standard, sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE), sizeof(ASN1_STRING_TABLE), table_cmp); 201 if(ttmp) return ttmp; 202 if(!stable) return NULL; 203 found = sk_ASN1_STRING_TABLE_find(stable, &idx, &fnd); 204 if (!found) return NULL; 205 return sk_ASN1_STRING_TABLE_value(stable, idx); 206 } 207 208 int ASN1_STRING_TABLE_add(int nid, 209 long minsize, long maxsize, unsigned long mask, 210 unsigned long flags) 211 { 212 ASN1_STRING_TABLE *tmp; 213 char new_nid = 0; 214 flags &= ~STABLE_FLAGS_MALLOC; 215 if(!stable) stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp); 216 if(!stable) { 217 OPENSSL_PUT_ERROR(ASN1, ASN1_STRING_TABLE_add, ERR_R_MALLOC_FAILURE); 218 return 0; 219 } 220 if(!(tmp = ASN1_STRING_TABLE_get(nid))) { 221 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE)); 222 if(!tmp) { 223 OPENSSL_PUT_ERROR(ASN1, ASN1_STRING_TABLE_add, ERR_R_MALLOC_FAILURE); 224 return 0; 225 } 226 tmp->flags = flags | STABLE_FLAGS_MALLOC; 227 tmp->nid = nid; 228 new_nid = 1; 229 } else tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags; 230 if(minsize != -1) tmp->minsize = minsize; 231 if(maxsize != -1) tmp->maxsize = maxsize; 232 tmp->mask = mask; 233 if(new_nid) sk_ASN1_STRING_TABLE_push(stable, tmp); 234 return 1; 235 } 236 237 void ASN1_STRING_TABLE_cleanup(void) 238 { 239 STACK_OF(ASN1_STRING_TABLE) *tmp; 240 tmp = stable; 241 if(!tmp) return; 242 stable = NULL; 243 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free); 244 } 245 246 static void st_free(ASN1_STRING_TABLE *tbl) 247 { 248 if(tbl->flags & STABLE_FLAGS_MALLOC) OPENSSL_free(tbl); 249 } 250 251 252 #ifdef STRING_TABLE_TEST 253 254 int 255 main(void) 256 { 257 ASN1_STRING_TABLE *tmp; 258 int i, last_nid = -1; 259 260 for (tmp = tbl_standard, i = 0; 261 i < sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE); i++, tmp++) 262 { 263 if (tmp->nid < last_nid) 264 { 265 last_nid = 0; 266 break; 267 } 268 last_nid = tmp->nid; 269 } 270 271 if (last_nid != 0) 272 { 273 printf("Table order OK\n"); 274 exit(0); 275 } 276 277 for (tmp = tbl_standard, i = 0; 278 i < sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE); i++, tmp++) 279 printf("Index %d, NID %d, Name=%s\n", i, tmp->nid, 280 OBJ_nid2ln(tmp->nid)); 281 282 return 0; 283 } 284 285 #endif 286
