1 /* a_strnid.c */ 2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 static int table_cmp(const void *a, const void *b); 71 72 73 /* This is the global mask for the mbstring functions: this is use to 74 * mask out certain types (such as BMPString and UTF8String) because 75 * certain software (e.g. Netscape) has problems with them. 76 */ 77 78 static unsigned long global_mask = 0xFFFFFFFFL; 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 /* This function sets the default to various "flavours" of configuration. 91 * based on an ASCII string. Currently this is: 92 * MASK:XXXX : a numerical mask value. 93 * nobmp : Don't use BMPStrings (just Printable, T61). 94 * pkix : PKIX recommendation in RFC2459. 95 * utf8only : only use UTF8Strings (RFC2459 recommendation for 2004). 96 * default: the default value, Printable, T61, BMP. 97 */ 98 99 int ASN1_STRING_set_default_mask_asc(char *p) 100 { 101 unsigned long mask; 102 char *end; 103 if(!strncmp(p, "MASK:", 5)) { 104 if(!p[5]) return 0; 105 mask = strtoul(p + 5, &end, 0); 106 if(*end) return 0; 107 } else if(!strcmp(p, "nombstr")) 108 mask = ~(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING); 109 else if(!strcmp(p, "pkix")) 110 mask = ~B_ASN1_T61STRING; 111 else if(!strcmp(p, "utf8only")) mask = B_ASN1_UTF8STRING; 112 else if(!strcmp(p, "default")) 113 mask = 0xFFFFFFFFL; 114 else return 0; 115 ASN1_STRING_set_default_mask(mask); 116 return 1; 117 } 118 119 /* The following function generates an ASN1_STRING based on limits in a table. 120 * Frequently the types and length of an ASN1_STRING are restricted by a 121 * corresponding OID. For example certificates and certificate requests. 122 */ 123 124 ASN1_STRING *ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, 125 int inlen, int inform, int nid) 126 { 127 ASN1_STRING_TABLE *tbl; 128 ASN1_STRING *str = NULL; 129 unsigned long mask; 130 int ret; 131 if(!out) out = &str; 132 tbl = ASN1_STRING_TABLE_get(nid); 133 if(tbl) { 134 mask = tbl->mask; 135 if(!(tbl->flags & STABLE_NO_MASK)) mask &= global_mask; 136 ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask, 137 tbl->minsize, tbl->maxsize); 138 } else ret = ASN1_mbstring_copy(out, in, inlen, inform, DIRSTRING_TYPE & global_mask); 139 if(ret <= 0) return NULL; 140 return *out; 141 } 142 143 /* Now the tables and helper functions for the string table: 144 */ 145 146 /* size limits: this stuff is taken straight from RFC2459 */ 147 148 #define ub_name 32768 149 #define ub_common_name 64 150 #define ub_locality_name 128 151 #define ub_state_name 128 152 #define ub_organization_name 64 153 #define ub_organization_unit_name 64 154 #define ub_title 64 155 #define ub_email_address 128 156 157 /* This table must be kept in NID order */ 158 159 static ASN1_STRING_TABLE tbl_standard[] = { 160 {NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0}, 161 {NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK}, 162 {NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0}, 163 {NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0}, 164 {NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0}, 165 {NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE, 0}, 166 {NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING, STABLE_NO_MASK}, 167 {NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0}, 168 {NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0}, 169 {NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0}, 170 {NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0}, 171 {NID_surname, 1, ub_name, DIRSTRING_TYPE, 0}, 172 {NID_initials, 1, ub_name, DIRSTRING_TYPE, 0}, 173 {NID_name, 1, ub_name, DIRSTRING_TYPE, 0}, 174 {NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK} 175 }; 176 177 static int sk_table_cmp(const ASN1_STRING_TABLE * const *a, 178 const ASN1_STRING_TABLE * const *b) 179 { 180 return (*a)->nid - (*b)->nid; 181 } 182 183 static int table_cmp(const void *a, const void *b) 184 { 185 const ASN1_STRING_TABLE *sa = a, *sb = b; 186 return sa->nid - sb->nid; 187 } 188 189 ASN1_STRING_TABLE *ASN1_STRING_TABLE_get(int nid) 190 { 191 int idx; 192 ASN1_STRING_TABLE *ttmp; 193 ASN1_STRING_TABLE fnd; 194 fnd.nid = nid; 195 ttmp = (ASN1_STRING_TABLE *) OBJ_bsearch((char *)&fnd, 196 (char *)tbl_standard, 197 sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE), 198 sizeof(ASN1_STRING_TABLE), table_cmp); 199 if(ttmp) return ttmp; 200 if(!stable) return NULL; 201 idx = sk_ASN1_STRING_TABLE_find(stable, &fnd); 202 if(idx < 0) return NULL; 203 return sk_ASN1_STRING_TABLE_value(stable, idx); 204 } 205 206 int ASN1_STRING_TABLE_add(int nid, 207 long minsize, long maxsize, unsigned long mask, 208 unsigned long flags) 209 { 210 ASN1_STRING_TABLE *tmp; 211 char new_nid = 0; 212 flags &= ~STABLE_FLAGS_MALLOC; 213 if(!stable) stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp); 214 if(!stable) { 215 ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, ERR_R_MALLOC_FAILURE); 216 return 0; 217 } 218 if(!(tmp = ASN1_STRING_TABLE_get(nid))) { 219 tmp = OPENSSL_malloc(sizeof(ASN1_STRING_TABLE)); 220 if(!tmp) { 221 ASN1err(ASN1_F_ASN1_STRING_TABLE_ADD, 222 ERR_R_MALLOC_FAILURE); 223 return 0; 224 } 225 tmp->flags = flags | STABLE_FLAGS_MALLOC; 226 tmp->nid = nid; 227 new_nid = 1; 228 } else tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags; 229 if(minsize != -1) tmp->minsize = minsize; 230 if(maxsize != -1) tmp->maxsize = maxsize; 231 tmp->mask = mask; 232 if(new_nid) sk_ASN1_STRING_TABLE_push(stable, tmp); 233 return 1; 234 } 235 236 void ASN1_STRING_TABLE_cleanup(void) 237 { 238 STACK_OF(ASN1_STRING_TABLE) *tmp; 239 tmp = stable; 240 if(!tmp) return; 241 stable = NULL; 242 sk_ASN1_STRING_TABLE_pop_free(tmp, st_free); 243 } 244 245 static void st_free(ASN1_STRING_TABLE *tbl) 246 { 247 if(tbl->flags & STABLE_FLAGS_MALLOC) OPENSSL_free(tbl); 248 } 249 250 IMPLEMENT_STACK_OF(ASN1_STRING_TABLE) 251