1*0Sstevel@tonic-gate /* v3_lib.c */ 2*0Sstevel@tonic-gate /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3*0Sstevel@tonic-gate * project 1999. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate /* ==================================================================== 6*0Sstevel@tonic-gate * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 7*0Sstevel@tonic-gate * 8*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 9*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 10*0Sstevel@tonic-gate * are met: 11*0Sstevel@tonic-gate * 12*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 13*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 14*0Sstevel@tonic-gate * 15*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 16*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in 17*0Sstevel@tonic-gate * the documentation and/or other materials provided with the 18*0Sstevel@tonic-gate * distribution. 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this 21*0Sstevel@tonic-gate * software must display the following acknowledgment: 22*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 23*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24*0Sstevel@tonic-gate * 25*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26*0Sstevel@tonic-gate * endorse or promote products derived from this software without 27*0Sstevel@tonic-gate * prior written permission. For written permission, please contact 28*0Sstevel@tonic-gate * licensing@OpenSSL.org. 29*0Sstevel@tonic-gate * 30*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL" 31*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written 32*0Sstevel@tonic-gate * permission of the OpenSSL Project. 33*0Sstevel@tonic-gate * 34*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following 35*0Sstevel@tonic-gate * acknowledgment: 36*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 37*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38*0Sstevel@tonic-gate * 39*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE. 51*0Sstevel@tonic-gate * ==================================================================== 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * This product includes cryptographic software written by Eric Young 54*0Sstevel@tonic-gate * (eay@cryptsoft.com). This product includes software written by Tim 55*0Sstevel@tonic-gate * Hudson (tjh@cryptsoft.com). 56*0Sstevel@tonic-gate * 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate /* X509 v3 extension utilities */ 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate #include <stdio.h> 61*0Sstevel@tonic-gate #include "cryptlib.h" 62*0Sstevel@tonic-gate #include <openssl/conf.h> 63*0Sstevel@tonic-gate #include <openssl/x509v3.h> 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate #include "ext_dat.h" 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL; 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate static int ext_cmp(const X509V3_EXT_METHOD * const *a, 70*0Sstevel@tonic-gate const X509V3_EXT_METHOD * const *b); 71*0Sstevel@tonic-gate static void ext_list_free(X509V3_EXT_METHOD *ext); 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate int X509V3_EXT_add(X509V3_EXT_METHOD *ext) 74*0Sstevel@tonic-gate { 75*0Sstevel@tonic-gate if(!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) { 76*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE); 77*0Sstevel@tonic-gate return 0; 78*0Sstevel@tonic-gate } 79*0Sstevel@tonic-gate if(!sk_X509V3_EXT_METHOD_push(ext_list, ext)) { 80*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE); 81*0Sstevel@tonic-gate return 0; 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate return 1; 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate static int ext_cmp(const X509V3_EXT_METHOD * const *a, 87*0Sstevel@tonic-gate const X509V3_EXT_METHOD * const *b) 88*0Sstevel@tonic-gate { 89*0Sstevel@tonic-gate return ((*a)->ext_nid - (*b)->ext_nid); 90*0Sstevel@tonic-gate } 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid) 93*0Sstevel@tonic-gate { 94*0Sstevel@tonic-gate X509V3_EXT_METHOD tmp, *t = &tmp, **ret; 95*0Sstevel@tonic-gate int idx; 96*0Sstevel@tonic-gate if(nid < 0) return NULL; 97*0Sstevel@tonic-gate tmp.ext_nid = nid; 98*0Sstevel@tonic-gate ret = (X509V3_EXT_METHOD **) OBJ_bsearch((char *)&t, 99*0Sstevel@tonic-gate (char *)standard_exts, STANDARD_EXTENSION_COUNT, 100*0Sstevel@tonic-gate sizeof(X509V3_EXT_METHOD *), (int (*)(const void *, const void *))ext_cmp); 101*0Sstevel@tonic-gate if(ret) return *ret; 102*0Sstevel@tonic-gate if(!ext_list) return NULL; 103*0Sstevel@tonic-gate idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp); 104*0Sstevel@tonic-gate if(idx == -1) return NULL; 105*0Sstevel@tonic-gate return sk_X509V3_EXT_METHOD_value(ext_list, idx); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate int nid; 111*0Sstevel@tonic-gate if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL; 112*0Sstevel@tonic-gate return X509V3_EXT_get_nid(nid); 113*0Sstevel@tonic-gate } 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist) 117*0Sstevel@tonic-gate { 118*0Sstevel@tonic-gate for(;extlist->ext_nid!=-1;extlist++) 119*0Sstevel@tonic-gate if(!X509V3_EXT_add(extlist)) return 0; 120*0Sstevel@tonic-gate return 1; 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate int X509V3_EXT_add_alias(int nid_to, int nid_from) 124*0Sstevel@tonic-gate { 125*0Sstevel@tonic-gate X509V3_EXT_METHOD *ext, *tmpext; 126*0Sstevel@tonic-gate if(!(ext = X509V3_EXT_get_nid(nid_from))) { 127*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_FOUND); 128*0Sstevel@tonic-gate return 0; 129*0Sstevel@tonic-gate } 130*0Sstevel@tonic-gate if(!(tmpext = (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METHOD)))) { 131*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE); 132*0Sstevel@tonic-gate return 0; 133*0Sstevel@tonic-gate } 134*0Sstevel@tonic-gate *tmpext = *ext; 135*0Sstevel@tonic-gate tmpext->ext_nid = nid_to; 136*0Sstevel@tonic-gate tmpext->ext_flags |= X509V3_EXT_DYNAMIC; 137*0Sstevel@tonic-gate return X509V3_EXT_add(tmpext); 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate void X509V3_EXT_cleanup(void) 141*0Sstevel@tonic-gate { 142*0Sstevel@tonic-gate sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free); 143*0Sstevel@tonic-gate ext_list = NULL; 144*0Sstevel@tonic-gate } 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate static void ext_list_free(X509V3_EXT_METHOD *ext) 147*0Sstevel@tonic-gate { 148*0Sstevel@tonic-gate if(ext->ext_flags & X509V3_EXT_DYNAMIC) OPENSSL_free(ext); 149*0Sstevel@tonic-gate } 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate /* Legacy function: we don't need to add standard extensions 152*0Sstevel@tonic-gate * any more because they are now kept in ext_dat.h. 153*0Sstevel@tonic-gate */ 154*0Sstevel@tonic-gate 155*0Sstevel@tonic-gate int X509V3_add_standard_extensions(void) 156*0Sstevel@tonic-gate { 157*0Sstevel@tonic-gate return 1; 158*0Sstevel@tonic-gate } 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate /* Return an extension internal structure */ 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate void *X509V3_EXT_d2i(X509_EXTENSION *ext) 163*0Sstevel@tonic-gate { 164*0Sstevel@tonic-gate X509V3_EXT_METHOD *method; 165*0Sstevel@tonic-gate unsigned char *p; 166*0Sstevel@tonic-gate if(!(method = X509V3_EXT_get(ext))) return NULL; 167*0Sstevel@tonic-gate p = ext->value->data; 168*0Sstevel@tonic-gate if(method->it) return ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it)); 169*0Sstevel@tonic-gate return method->d2i(NULL, &p, ext->value->length); 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate /* Get critical flag and decoded version of extension from a NID. 173*0Sstevel@tonic-gate * The "idx" variable returns the last found extension and can 174*0Sstevel@tonic-gate * be used to retrieve multiple extensions of the same NID. 175*0Sstevel@tonic-gate * However multiple extensions with the same NID is usually 176*0Sstevel@tonic-gate * due to a badly encoded certificate so if idx is NULL we 177*0Sstevel@tonic-gate * choke if multiple extensions exist. 178*0Sstevel@tonic-gate * The "crit" variable is set to the critical value. 179*0Sstevel@tonic-gate * The return value is the decoded extension or NULL on 180*0Sstevel@tonic-gate * error. The actual error can have several different causes, 181*0Sstevel@tonic-gate * the value of *crit reflects the cause: 182*0Sstevel@tonic-gate * >= 0, extension found but not decoded (reflects critical value). 183*0Sstevel@tonic-gate * -1 extension not found. 184*0Sstevel@tonic-gate * -2 extension occurs more than once. 185*0Sstevel@tonic-gate */ 186*0Sstevel@tonic-gate 187*0Sstevel@tonic-gate void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx) 188*0Sstevel@tonic-gate { 189*0Sstevel@tonic-gate int lastpos, i; 190*0Sstevel@tonic-gate X509_EXTENSION *ex, *found_ex = NULL; 191*0Sstevel@tonic-gate if(!x) { 192*0Sstevel@tonic-gate if(idx) *idx = -1; 193*0Sstevel@tonic-gate if(crit) *crit = -1; 194*0Sstevel@tonic-gate return NULL; 195*0Sstevel@tonic-gate } 196*0Sstevel@tonic-gate if(idx) lastpos = *idx + 1; 197*0Sstevel@tonic-gate else lastpos = 0; 198*0Sstevel@tonic-gate if(lastpos < 0) lastpos = 0; 199*0Sstevel@tonic-gate for(i = lastpos; i < sk_X509_EXTENSION_num(x); i++) 200*0Sstevel@tonic-gate { 201*0Sstevel@tonic-gate ex = sk_X509_EXTENSION_value(x, i); 202*0Sstevel@tonic-gate if(OBJ_obj2nid(ex->object) == nid) { 203*0Sstevel@tonic-gate if(idx) { 204*0Sstevel@tonic-gate *idx = i; 205*0Sstevel@tonic-gate found_ex = ex; 206*0Sstevel@tonic-gate break; 207*0Sstevel@tonic-gate } else if(found_ex) { 208*0Sstevel@tonic-gate /* Found more than one */ 209*0Sstevel@tonic-gate if(crit) *crit = -2; 210*0Sstevel@tonic-gate return NULL; 211*0Sstevel@tonic-gate } 212*0Sstevel@tonic-gate found_ex = ex; 213*0Sstevel@tonic-gate } 214*0Sstevel@tonic-gate } 215*0Sstevel@tonic-gate if(found_ex) { 216*0Sstevel@tonic-gate /* Found it */ 217*0Sstevel@tonic-gate if(crit) *crit = X509_EXTENSION_get_critical(found_ex); 218*0Sstevel@tonic-gate return X509V3_EXT_d2i(found_ex); 219*0Sstevel@tonic-gate } 220*0Sstevel@tonic-gate 221*0Sstevel@tonic-gate /* Extension not found */ 222*0Sstevel@tonic-gate if(idx) *idx = -1; 223*0Sstevel@tonic-gate if(crit) *crit = -1; 224*0Sstevel@tonic-gate return NULL; 225*0Sstevel@tonic-gate } 226*0Sstevel@tonic-gate 227*0Sstevel@tonic-gate /* This function is a general extension append, replace and delete utility. 228*0Sstevel@tonic-gate * The precise operation is governed by the 'flags' value. The 'crit' and 229*0Sstevel@tonic-gate * 'value' arguments (if relevant) are the extensions internal structure. 230*0Sstevel@tonic-gate */ 231*0Sstevel@tonic-gate 232*0Sstevel@tonic-gate int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, 233*0Sstevel@tonic-gate int crit, unsigned long flags) 234*0Sstevel@tonic-gate { 235*0Sstevel@tonic-gate int extidx = -1; 236*0Sstevel@tonic-gate int errcode; 237*0Sstevel@tonic-gate X509_EXTENSION *ext, *extmp; 238*0Sstevel@tonic-gate unsigned long ext_op = flags & X509V3_ADD_OP_MASK; 239*0Sstevel@tonic-gate 240*0Sstevel@tonic-gate /* If appending we don't care if it exists, otherwise 241*0Sstevel@tonic-gate * look for existing extension. 242*0Sstevel@tonic-gate */ 243*0Sstevel@tonic-gate if(ext_op != X509V3_ADD_APPEND) 244*0Sstevel@tonic-gate extidx = X509v3_get_ext_by_NID(*x, nid, -1); 245*0Sstevel@tonic-gate 246*0Sstevel@tonic-gate /* See if extension exists */ 247*0Sstevel@tonic-gate if(extidx >= 0) { 248*0Sstevel@tonic-gate /* If keep existing, nothing to do */ 249*0Sstevel@tonic-gate if(ext_op == X509V3_ADD_KEEP_EXISTING) 250*0Sstevel@tonic-gate return 1; 251*0Sstevel@tonic-gate /* If default then its an error */ 252*0Sstevel@tonic-gate if(ext_op == X509V3_ADD_DEFAULT) { 253*0Sstevel@tonic-gate errcode = X509V3_R_EXTENSION_EXISTS; 254*0Sstevel@tonic-gate goto err; 255*0Sstevel@tonic-gate } 256*0Sstevel@tonic-gate /* If delete, just delete it */ 257*0Sstevel@tonic-gate if(ext_op == X509V3_ADD_DELETE) { 258*0Sstevel@tonic-gate if(!sk_X509_EXTENSION_delete(*x, extidx)) return -1; 259*0Sstevel@tonic-gate return 1; 260*0Sstevel@tonic-gate } 261*0Sstevel@tonic-gate } else { 262*0Sstevel@tonic-gate /* If replace existing or delete, error since 263*0Sstevel@tonic-gate * extension must exist 264*0Sstevel@tonic-gate */ 265*0Sstevel@tonic-gate if((ext_op == X509V3_ADD_REPLACE_EXISTING) || 266*0Sstevel@tonic-gate (ext_op == X509V3_ADD_DELETE)) { 267*0Sstevel@tonic-gate errcode = X509V3_R_EXTENSION_NOT_FOUND; 268*0Sstevel@tonic-gate goto err; 269*0Sstevel@tonic-gate } 270*0Sstevel@tonic-gate } 271*0Sstevel@tonic-gate 272*0Sstevel@tonic-gate /* If we get this far then we have to create an extension: 273*0Sstevel@tonic-gate * could have some flags for alternative encoding schemes... 274*0Sstevel@tonic-gate */ 275*0Sstevel@tonic-gate 276*0Sstevel@tonic-gate ext = X509V3_EXT_i2d(nid, crit, value); 277*0Sstevel@tonic-gate 278*0Sstevel@tonic-gate if(!ext) { 279*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_ADD_I2D, X509V3_R_ERROR_CREATING_EXTENSION); 280*0Sstevel@tonic-gate return 0; 281*0Sstevel@tonic-gate } 282*0Sstevel@tonic-gate 283*0Sstevel@tonic-gate /* If extension exists replace it.. */ 284*0Sstevel@tonic-gate if(extidx >= 0) { 285*0Sstevel@tonic-gate extmp = sk_X509_EXTENSION_value(*x, extidx); 286*0Sstevel@tonic-gate X509_EXTENSION_free(extmp); 287*0Sstevel@tonic-gate if(!sk_X509_EXTENSION_set(*x, extidx, ext)) return -1; 288*0Sstevel@tonic-gate return 1; 289*0Sstevel@tonic-gate } 290*0Sstevel@tonic-gate 291*0Sstevel@tonic-gate if(!*x && !(*x = sk_X509_EXTENSION_new_null())) return -1; 292*0Sstevel@tonic-gate if(!sk_X509_EXTENSION_push(*x, ext)) return -1; 293*0Sstevel@tonic-gate 294*0Sstevel@tonic-gate return 1; 295*0Sstevel@tonic-gate 296*0Sstevel@tonic-gate err: 297*0Sstevel@tonic-gate if(!(flags & X509V3_ADD_SILENT)) 298*0Sstevel@tonic-gate X509V3err(X509V3_F_X509V3_ADD_I2D, errcode); 299*0Sstevel@tonic-gate return 0; 300*0Sstevel@tonic-gate } 301*0Sstevel@tonic-gate 302*0Sstevel@tonic-gate IMPLEMENT_STACK_OF(X509V3_EXT_METHOD) 303