ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/x509/v3_prn.c/
/*
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
* 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com). */
// X509 v3 extension utilities
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/conf.h>
#include <openssl/mem.h>
#include <openssl/x509.h>
// Extension printing routines
static int unknown_ext_print(BIO *out, const X509_EXTENSION *ext,
unsigned long flag, int indent, int supported);
// Print out a name+value stack
static void X509V3_EXT_val_prn(BIO *out, const STACK_OF(CONF_VALUE) *val,
int indent, int ml) {
if (!val) {
return;
}
if (!ml || !sk_CONF_VALUE_num(val)) {
BIO_printf(out, "%*s", indent, "");
if (!sk_CONF_VALUE_num(val)) {
BIO_puts(out, "<EMPTY>\n");
}
}
for (size_t i = 0; i < sk_CONF_VALUE_num(val); i++) {
if (ml) {
BIO_printf(out, "%*s", indent, "");
} else if (i > 0) {
BIO_printf(out, ", ");
}
const CONF_VALUE *nval = sk_CONF_VALUE_value(val, i);
if (!nval->name) {
BIO_puts(out, nval->value);
} else if (!nval->value) {
BIO_puts(out, nval->name);
} else {
BIO_printf(out, "%s:%s", nval->name, nval->value);
}
if (ml) {
BIO_puts(out, "\n");
}
}
}
// Main routine: print out a general extension
int X509V3_EXT_print(BIO *out, const X509_EXTENSION *ext, unsigned long flag,
int indent) {
const X509V3_EXT_METHOD *method = X509V3_EXT_get(ext);
if (method == NULL) {
return unknown_ext_print(out, ext, flag, indent, 0);
}
const ASN1_STRING *ext_data = X509_EXTENSION_get_data(ext);
const unsigned char *p = ASN1_STRING_get0_data(ext_data);
void *ext_str = ASN1_item_d2i(NULL, &p, ASN1_STRING_length(ext_data),
ASN1_ITEM_ptr(method->it));
if (!ext_str) {
return unknown_ext_print(out, ext, flag, indent, 1);
}
char *value = NULL;
STACK_OF(CONF_VALUE) *nval = NULL;
int ok = 0;
if (method->i2s) {
if (!(value = method->i2s(method, ext_str))) {
goto err;
}
BIO_printf(out, "%*s%s", indent, "", value);
} else if (method->i2v) {
if (!(nval = method->i2v(method, ext_str, NULL))) {
goto err;
}
X509V3_EXT_val_prn(out, nval, indent,
method->ext_flags & X509V3_EXT_MULTILINE);
} else if (method->i2r) {
if (!method->i2r(method, ext_str, out, indent)) {
goto err;
}
} else {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
goto err;
}
ok = 1;
err:
sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
OPENSSL_free(value);
ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
return ok;
}
int X509V3_extensions_print(BIO *bp, const char *title,
const STACK_OF(X509_EXTENSION) *exts,
unsigned long flag, int indent) {
size_t i;
int j;
if (sk_X509_EXTENSION_num(exts) <= 0) {
return 1;
}
if (title) {
BIO_printf(bp, "%*s%s:\n", indent, "", title);
indent += 4;
}
for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
const X509_EXTENSION *ex = sk_X509_EXTENSION_value(exts, i);
if (indent && BIO_printf(bp, "%*s", indent, "") <= 0) {
return 0;
}
const ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
i2a_ASN1_OBJECT(bp, obj);
j = X509_EXTENSION_get_critical(ex);
if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0) {
return 0;
}
if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
BIO_printf(bp, "%*s", indent + 4, "");
ASN1_STRING_print(bp, X509_EXTENSION_get_data(ex));
}
if (BIO_write(bp, "\n", 1) <= 0) {
return 0;
}
}
return 1;
}
static int unknown_ext_print(BIO *out, const X509_EXTENSION *ext,
unsigned long flag, int indent, int supported) {
switch (flag & X509V3_EXT_UNKNOWN_MASK) {
case X509V3_EXT_DEFAULT:
return 0;
case X509V3_EXT_ERROR_UNKNOWN:
if (supported) {
BIO_printf(out, "%*s<Parse Error>", indent, "");
} else {
BIO_printf(out, "%*s<Not Supported>", indent, "");
}
return 1;
case X509V3_EXT_PARSE_UNKNOWN:
case X509V3_EXT_DUMP_UNKNOWN: {
const ASN1_STRING *data = X509_EXTENSION_get_data(ext);
return BIO_hexdump(out, ASN1_STRING_get0_data(data),
ASN1_STRING_length(data), indent);
}
default:
return 1;
}
}
int X509V3_EXT_print_fp(FILE *fp, const X509_EXTENSION *ext, int flag,
int indent) {
BIO *bio_tmp;
int ret;
if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) {
return 0;
}
ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
BIO_free(bio_tmp);
return ret;
}