1 /* $OpenBSD: x509_prn.c,v 1.2 2021/11/01 20:53:08 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_lcl.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 } 102 103 /* Main routine: print out a general extension */ 104 105 int 106 X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent) 107 { 108 void *ext_str = NULL; 109 char *value = NULL; 110 const unsigned char *p; 111 const X509V3_EXT_METHOD *method; 112 STACK_OF(CONF_VALUE) *nval = NULL; 113 int ok = 1; 114 115 if (!(method = X509V3_EXT_get(ext))) 116 return unknown_ext_print(out, ext, flag, indent, 0); 117 p = ext->value->data; 118 if (method->it) 119 ext_str = ASN1_item_d2i(NULL, &p, ext->value->length, 120 method->it); 121 else 122 ext_str = method->d2i(NULL, &p, ext->value->length); 123 124 if (!ext_str) 125 return unknown_ext_print(out, ext, flag, indent, 1); 126 127 if (method->i2s) { 128 if (!(value = method->i2s(method, ext_str))) { 129 ok = 0; 130 goto err; 131 } 132 BIO_printf(out, "%*s%s", indent, "", value); 133 } else if (method->i2v) { 134 if (!(nval = method->i2v(method, ext_str, NULL))) { 135 ok = 0; 136 goto err; 137 } 138 X509V3_EXT_val_prn(out, nval, indent, 139 method->ext_flags & X509V3_EXT_MULTILINE); 140 } else if (method->i2r) { 141 if (!method->i2r(method, ext_str, out, indent)) 142 ok = 0; 143 } else 144 ok = 0; 145 146 err: 147 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free); 148 free(value); 149 if (method->it) 150 ASN1_item_free(ext_str, method->it); 151 else 152 method->ext_free(ext_str); 153 return ok; 154 } 155 156 int 157 X509V3_extensions_print(BIO *bp, const char *title, 158 const STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent) 159 { 160 int i, j; 161 162 if (sk_X509_EXTENSION_num(exts) <= 0) 163 return 1; 164 165 if (title) { 166 BIO_printf(bp, "%*s%s:\n",indent, "", title); 167 indent += 4; 168 } 169 170 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) { 171 ASN1_OBJECT *obj; 172 X509_EXTENSION *ex; 173 ex = sk_X509_EXTENSION_value(exts, i); 174 if (indent && BIO_printf(bp, "%*s",indent, "") <= 0) 175 return 0; 176 obj = X509_EXTENSION_get_object(ex); 177 i2a_ASN1_OBJECT(bp, obj); 178 j = X509_EXTENSION_get_critical(ex); 179 if (BIO_printf(bp, ": %s\n",j?"critical":"") <= 0) 180 return 0; 181 if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) { 182 BIO_printf(bp, "%*s", indent + 4, ""); 183 ASN1_STRING_print(bp, ex->value); 184 } 185 if (BIO_write(bp, "\n",1) <= 0) 186 return 0; 187 } 188 return 1; 189 } 190 191 static int 192 unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, 193 int indent, int supported) 194 { 195 switch (flag & X509V3_EXT_UNKNOWN_MASK) { 196 case X509V3_EXT_DEFAULT: 197 return 0; 198 case X509V3_EXT_ERROR_UNKNOWN: 199 if (supported) 200 BIO_printf(out, "%*s<Parse Error>", indent, ""); 201 else 202 BIO_printf(out, "%*s<Not Supported>", indent, ""); 203 return 1; 204 case X509V3_EXT_PARSE_UNKNOWN: 205 return ASN1_parse_dump(out, 206 ext->value->data, ext->value->length, indent, -1); 207 case X509V3_EXT_DUMP_UNKNOWN: 208 return BIO_dump_indent(out, (char *)ext->value->data, 209 ext->value->length, indent); 210 default: 211 return 1; 212 } 213 } 214 215 216 int 217 X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent) 218 { 219 BIO *bio_tmp; 220 int ret; 221 222 if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) 223 return 0; 224 ret = X509V3_EXT_print(bio_tmp, ext, flag, indent); 225 BIO_free(bio_tmp); 226 return ret; 227 } 228