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openssl/crypto/x509/t_req.c
David Benjamin cdf63a3736 Add X509 version constants. 
The X509 version APIs return the numerical values of the version
numbers, which are one off from the names. This is a bit confusing.
Where they don't get it wrong (accidentally making an "X509v4"
certificate), callers tend to try commenting every call site to explain
the mismatch, including in OpenSSL itself.

Define constants for these values, so code can be self-documenting and
callers are nudged towards the right values.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14549)
2021-04-28 11:40:06 +02:00

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/*
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/bn.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/rsa.h>
#include <openssl/dsa.h>
#ifndef OPENSSL_NO_STDIO
int X509_REQ_print_fp(FILE *fp, X509_REQ *x)
{
BIO *b;
int ret;
if ((b = BIO_new(BIO_s_file())) == NULL) {
ERR_raise(ERR_LIB_X509, ERR_R_BUF_LIB);
return 0;
}
BIO_set_fp(b, fp, BIO_NOCLOSE);
ret = X509_REQ_print(b, x);
BIO_free(b);
return ret;
}
#endif
int X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflags,
unsigned long cflag)
{
long l;
int i;
EVP_PKEY *pkey;
STACK_OF(X509_EXTENSION) *exts;
char mlch = ' ';
int nmindent = 0;
if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
mlch = '\n';
nmindent = 12;
}
if (nmflags == X509_FLAG_COMPAT)
nmindent = 16;
if (!(cflag & X509_FLAG_NO_HEADER)) {
if (BIO_write(bp, "Certificate Request:\n", 21) <= 0)
goto err;
if (BIO_write(bp, " Data:\n", 10) <= 0)
goto err;
}
if (!(cflag & X509_FLAG_NO_VERSION)) {
l = X509_REQ_get_version(x);
if (l == X509_REQ_VERSION_1) {
if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", "", l + 1, (unsigned long)l) <= 0)
goto err;
} else {
if (BIO_printf(bp, "%8sVersion: Unknown (%ld)\n", "", l) <= 0)
goto err;
}
}
if (!(cflag & X509_FLAG_NO_SUBJECT)) {
if (BIO_printf(bp, " Subject:%c", mlch) <= 0)
goto err;
if (X509_NAME_print_ex(bp, X509_REQ_get_subject_name(x),
nmindent, nmflags) < 0)
goto err;
if (BIO_write(bp, "\n", 1) <= 0)
goto err;
}
if (!(cflag & X509_FLAG_NO_PUBKEY)) {
X509_PUBKEY *xpkey;
ASN1_OBJECT *koid;
if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0)
goto err;
if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
goto err;
xpkey = X509_REQ_get_X509_PUBKEY(x);
X509_PUBKEY_get0_param(&koid, NULL, NULL, NULL, xpkey);
if (i2a_ASN1_OBJECT(bp, koid) <= 0)
goto err;
if (BIO_puts(bp, "\n") <= 0)
goto err;
pkey = X509_REQ_get0_pubkey(x);
if (pkey == NULL) {
if (BIO_printf(bp, "%12sUnable to load Public Key\n", "") <= 0)
goto err;
ERR_print_errors(bp);
} else {
if (EVP_PKEY_print_public(bp, pkey, 16, NULL) <= 0)
goto err;
}
}
if (!(cflag & X509_FLAG_NO_ATTRIBUTES)) {
/* may not be */
if (BIO_printf(bp, "%8sAttributes:\n", "") <= 0)
goto err;
if (X509_REQ_get_attr_count(x) == 0) {
if (BIO_printf(bp, "%12s(none)\n", "") <= 0)
goto err;
} else {
for (i = 0; i < X509_REQ_get_attr_count(x); i++) {
ASN1_TYPE *at;
X509_ATTRIBUTE *a;
ASN1_BIT_STRING *bs = NULL;
ASN1_OBJECT *aobj;
int j, type = 0, count = 1, ii = 0;
a = X509_REQ_get_attr(x, i);
aobj = X509_ATTRIBUTE_get0_object(a);
if (X509_REQ_extension_nid(OBJ_obj2nid(aobj)))
continue;
if (BIO_printf(bp, "%12s", "") <= 0)
goto err;
if ((j = i2a_ASN1_OBJECT(bp, aobj)) > 0) {
ii = 0;
count = X509_ATTRIBUTE_count(a);
if (count == 0) {
ERR_raise(ERR_LIB_X509, X509_R_INVALID_ATTRIBUTES);
return 0;
}
get_next:
at = X509_ATTRIBUTE_get0_type(a, ii);
type = at->type;
bs = at->value.asn1_string;
}
for (j = 25 - j; j > 0; j--)
if (BIO_write(bp, " ", 1) != 1)
goto err;
if (BIO_puts(bp, ":") <= 0)
goto err;
switch (type) {
case V_ASN1_PRINTABLESTRING:
case V_ASN1_T61STRING:
case V_ASN1_NUMERICSTRING:
case V_ASN1_UTF8STRING:
case V_ASN1_IA5STRING:
if (BIO_write(bp, (char *)bs->data, bs->length)
!= bs->length)
goto err;
if (BIO_puts(bp, "\n") <= 0)
goto err;
break;
default:
if (BIO_puts(bp, "unable to print attribute\n") <= 0)
goto err;
break;
}
if (++ii < count)
goto get_next;
}
}
}
if (!(cflag & X509_FLAG_NO_EXTENSIONS)) {
exts = X509_REQ_get_extensions(x);
if (exts) {
if (BIO_printf(bp, "%12sRequested Extensions:\n", "") <= 0)
goto err;
for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
ASN1_OBJECT *obj;
X509_EXTENSION *ex;
int critical;
ex = sk_X509_EXTENSION_value(exts, i);
if (BIO_printf(bp, "%16s", "") <= 0)
goto err;
obj = X509_EXTENSION_get_object(ex);
if (i2a_ASN1_OBJECT(bp, obj) <= 0)
goto err;
critical = X509_EXTENSION_get_critical(ex);
if (BIO_printf(bp, ": %s\n", critical ? "critical" : "") <= 0)
goto err;
if (!X509V3_EXT_print(bp, ex, cflag, 20)) {
if (BIO_printf(bp, "%20s", "") <= 0
|| ASN1_STRING_print(bp,
X509_EXTENSION_get_data(ex)) <= 0)
goto err;
}
if (BIO_write(bp, "\n", 1) <= 0)
goto err;
}
sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
}
}
if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
const X509_ALGOR *sig_alg;
const ASN1_BIT_STRING *sig;
X509_REQ_get0_signature(x, &sig, &sig_alg);
if (!X509_signature_print(bp, sig_alg, sig))
goto err;
}
return 1;
err:
ERR_raise(ERR_LIB_X509, ERR_R_BUF_LIB);
return 0;
}
int X509_REQ_print(BIO *bp, X509_REQ *x)
{
return X509_REQ_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
}
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