1 /* $OpenBSD: x509_prn.c,v 1.6 2023/05/08 05:30:38 tb Exp $ */ 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 /* X509 v3 extension utilities */ 59 60 #include <stdio.h> 61 62 #include <openssl/conf.h> 63 #include <openssl/x509v3.h> 64 65 #include "x509_local.h" 66 67 /* Extension printing routines */ 68 69 static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, 70 int indent, int supported); 71 72 /* Print out a name+value stack */ 73 74 void 75 X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent, int ml) 76 { 77 int i; 78 CONF_VALUE *nval; 79 80 if (!val) 81 return; 82 if (!ml || !sk_CONF_VALUE_num(val)) { 83 BIO_printf(out, "%*s", indent, ""); 84 if (!sk_CONF_VALUE_num(val)) 85 BIO_puts(out, "<EMPTY>\n"); 86 } 87 for (i = 0; i < sk_CONF_VALUE_num(val); i++) { 88 if (ml) 89 BIO_printf(out, "%*s", indent, ""); 90 else if (i > 0) BIO_printf(out, ", "); 91 nval = sk_CONF_VALUE_value(val, i); 92 if (!nval->name) 93 BIO_puts(out, nval->value); 94 else if (!nval->value) 95 BIO_puts(out, nval->name); 96 else 97 BIO_printf(out, "%s:%s", nval->name, nval->value); 98 if (ml) 99 BIO_puts(out, "\n"); 100 } 101 } 102 LCRYPTO_ALIAS(X509V3_EXT_val_prn); 103 104 /* Main routine: print out a general extension */ 105 106 int 107 X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent) 108 { 109 void *ext_str = NULL; 110 char *value = NULL; 111 const unsigned char *p; 112 const X509V3_EXT_METHOD *method; 113 STACK_OF(CONF_VALUE) *nval = NULL; 114 int ok = 1; 115 116 if (!(method = X509V3_EXT_get(ext))) 117 return unknown_ext_print(out, ext, flag, indent, 0); 118 p = ext->value->data; 119 if (method->it) 120 ext_str = ASN1_item_d2i(NULL, &p, ext->value->length, 121 method->it); 122 else 123 ext_str = method->d2i(NULL, &p, ext->value->length); 124 125 if (!ext_str) 126 return unknown_ext_print(out, ext, flag, indent, 1); 127 128 if (method->i2s) { 129 if (!(value = method->i2s(method, ext_str))) { 130 ok = 0; 131 goto err; 132 } 133 BIO_printf(out, "%*s%s", indent, "", value); 134 } else if (method->i2v) { 135 if (!(nval = method->i2v(method, ext_str, NULL))) { 136 ok = 0; 137 goto err; 138 } 139 X509V3_EXT_val_prn(out, nval, indent, 140 method->ext_flags & X509V3_EXT_MULTILINE); 141 } else if (method->i2r) { 142 if (!method->i2r(method, ext_str, out, indent)) 143 ok = 0; 144 } else 145 ok = 0; 146 147 err: 148 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free); 149 free(value); 150 if (method->it) 151 ASN1_item_free(ext_str, method->it); 152 else 153 method->ext_free(ext_str); 154 return ok; 155 } 156 LCRYPTO_ALIAS(X509V3_EXT_print); 157 158 int 159 X509V3_extensions_print(BIO *bp, const char *title, 160 const STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent) 161 { 162 int i, j; 163 164 if (sk_X509_EXTENSION_num(exts) <= 0) 165 return 1; 166 167 if (title) { 168 BIO_printf(bp, "%*s%s:\n",indent, "", title); 169 indent += 4; 170 } 171 172 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) { 173 ASN1_OBJECT *obj; 174 X509_EXTENSION *ex; 175 ex = sk_X509_EXTENSION_value(exts, i); 176 if (indent && BIO_printf(bp, "%*s",indent, "") <= 0) 177 return 0; 178 obj = X509_EXTENSION_get_object(ex); 179 i2a_ASN1_OBJECT(bp, obj); 180 j = X509_EXTENSION_get_critical(ex); 181 if (BIO_printf(bp, ":%s\n", j ? " critical" : "") <= 0) 182 return 0; 183 if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) { 184 BIO_printf(bp, "%*s", indent + 4, ""); 185 ASN1_STRING_print(bp, ex->value); 186 } 187 if (BIO_write(bp, "\n",1) <= 0) 188 return 0; 189 } 190 return 1; 191 } 192 LCRYPTO_ALIAS(X509V3_extensions_print); 193 194 static int 195 unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, 196 int indent, int supported) 197 { 198 switch (flag & X509V3_EXT_UNKNOWN_MASK) { 199 case X509V3_EXT_DEFAULT: 200 return 0; 201 case X509V3_EXT_ERROR_UNKNOWN: 202 if (supported) 203 BIO_printf(out, "%*s<Parse Error>", indent, ""); 204 else 205 BIO_printf(out, "%*s<Not Supported>", indent, ""); 206 return 1; 207 case X509V3_EXT_PARSE_UNKNOWN: 208 return ASN1_parse_dump(out, 209 ext->value->data, ext->value->length, indent, -1); 210 case X509V3_EXT_DUMP_UNKNOWN: 211 return BIO_dump_indent(out, (char *)ext->value->data, 212 ext->value->length, indent); 213 default: 214 return 1; 215 } 216 } 217 218 219 int 220 X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent) 221 { 222 BIO *bio_tmp; 223 int ret; 224 225 if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) 226 return 0; 227 ret = X509V3_EXT_print(bio_tmp, ext, flag, indent); 228 BIO_free(bio_tmp); 229 return ret; 230 } 231 LCRYPTO_ALIAS(X509V3_EXT_print_fp); 232