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/*
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* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* X509 v3 extension utilities */
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/conf.h>
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#include <openssl/x509v3.h>
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/* Extension printing routines */
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static int unknown_ext_print(BIO *out, const unsigned char *ext, int extlen,
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unsigned long flag, int indent, int supported);
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/* Print out a name+value stack */
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void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
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int ml)
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{
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int i;
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CONF_VALUE *nval;
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if (!val)
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return;
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if (!ml || !sk_CONF_VALUE_num(val)) {
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BIO_printf(out, "%*s", indent, "");
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if (!sk_CONF_VALUE_num(val))
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BIO_puts(out, "<EMPTY>\n");
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}
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for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
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if (ml)
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BIO_printf(out, "%*s", indent, "");
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else if (i > 0)
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BIO_printf(out, ", ");
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nval = sk_CONF_VALUE_value(val, i);
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if (!nval->name)
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BIO_puts(out, nval->value);
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else if (!nval->value)
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BIO_puts(out, nval->name);
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#ifndef CHARSET_EBCDIC
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else
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BIO_printf(out, "%s:%s", nval->name, nval->value);
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#else
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else {
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int len;
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char *tmp;
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len = strlen(nval->value) + 1;
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tmp = OPENSSL_malloc(len);
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if (tmp != NULL) {
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ascii2ebcdic(tmp, nval->value, len);
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BIO_printf(out, "%s:%s", nval->name, tmp);
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OPENSSL_free(tmp);
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}
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}
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#endif
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if (ml)
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BIO_puts(out, "\n");
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}
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}
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/* Main routine: print out a general extension */
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int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
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int indent)
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{
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void *ext_str = NULL;
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char *value = NULL;
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ASN1_OCTET_STRING *extoct;
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const unsigned char *p;
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int extlen;
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const X509V3_EXT_METHOD *method;
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STACK_OF(CONF_VALUE) *nval = NULL;
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int ok = 1;
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extoct = X509_EXTENSION_get_data(ext);
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p = ASN1_STRING_get0_data(extoct);
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extlen = ASN1_STRING_length(extoct);
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if ((method = X509V3_EXT_get(ext)) == NULL)
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return unknown_ext_print(out, p, extlen, flag, indent, 0);
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if (method->it)
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ext_str = ASN1_item_d2i(NULL, &p, extlen, ASN1_ITEM_ptr(method->it));
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else
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ext_str = method->d2i(NULL, &p, extlen);
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if (!ext_str)
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return unknown_ext_print(out, p, extlen, flag, indent, 1);
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if (method->i2s) {
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if ((value = method->i2s(method, ext_str)) == NULL) {
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ok = 0;
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goto err;
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}
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#ifndef CHARSET_EBCDIC
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BIO_printf(out, "%*s%s", indent, "", value);
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#else
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{
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int len;
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char *tmp;
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len = strlen(value) + 1;
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tmp = OPENSSL_malloc(len);
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if (tmp != NULL) {
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ascii2ebcdic(tmp, value, len);
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BIO_printf(out, "%*s%s", indent, "", tmp);
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OPENSSL_free(tmp);
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}
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}
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#endif
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} else if (method->i2v) {
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if ((nval = method->i2v(method, ext_str, NULL)) == NULL) {
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ok = 0;
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goto err;
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}
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X509V3_EXT_val_prn(out, nval, indent,
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method->ext_flags & X509V3_EXT_MULTILINE);
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} else if (method->i2r) {
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if (!method->i2r(method, ext_str, out, indent))
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ok = 0;
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} else
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ok = 0;
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err:
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sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
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OPENSSL_free(value);
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if (method->it)
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ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
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else
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method->ext_free(ext_str);
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return ok;
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}
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int X509V3_extensions_print(BIO *bp, const char *title,
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const STACK_OF(X509_EXTENSION) *exts,
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unsigned long flag, int indent)
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{
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int i, j;
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if (sk_X509_EXTENSION_num(exts) <= 0)
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return 1;
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if (title) {
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BIO_printf(bp, "%*s%s:\n", indent, "", title);
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indent += 4;
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}
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for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
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ASN1_OBJECT *obj;
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X509_EXTENSION *ex;
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ex = sk_X509_EXTENSION_value(exts, i);
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if (indent && BIO_printf(bp, "%*s", indent, "") <= 0)
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return 0;
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obj = X509_EXTENSION_get_object(ex);
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i2a_ASN1_OBJECT(bp, obj);
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j = X509_EXTENSION_get_critical(ex);
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if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0)
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return 0;
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if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
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BIO_printf(bp, "%*s", indent + 4, "");
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ASN1_STRING_print(bp, X509_EXTENSION_get_data(ex));
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}
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if (BIO_write(bp, "\n", 1) <= 0)
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return 0;
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}
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return 1;
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}
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static int unknown_ext_print(BIO *out, const unsigned char *ext, int extlen,
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unsigned long flag, int indent, int supported)
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{
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switch (flag & X509V3_EXT_UNKNOWN_MASK) {
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case X509V3_EXT_DEFAULT:
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return 0;
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case X509V3_EXT_ERROR_UNKNOWN:
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if (supported)
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BIO_printf(out, "%*s<Parse Error>", indent, "");
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else
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BIO_printf(out, "%*s<Not Supported>", indent, "");
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return 1;
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case X509V3_EXT_PARSE_UNKNOWN:
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return ASN1_parse_dump(out, ext, extlen, indent, -1);
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case X509V3_EXT_DUMP_UNKNOWN:
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return BIO_dump_indent(out, (const char *)ext, extlen, indent);
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default:
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return 1;
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}
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}
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#ifndef OPENSSL_NO_STDIO
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int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
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{
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BIO *bio_tmp;
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int ret;
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if ((bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
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return 0;
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ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
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BIO_free(bio_tmp);
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return ret;
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}
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#endif
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