mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
e6623cfbff
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/12781)
306 lines
8.3 KiB
C
306 lines
8.3 KiB
C
/*
|
|
* Copyright 1999-2020 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
|
|
*/
|
|
|
|
/* X509 v3 extension utilities */
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/conf.h>
|
|
#include <openssl/x509v3.h>
|
|
|
|
#include "ext_dat.h"
|
|
|
|
DEFINE_STACK_OF(X509V3_EXT_METHOD)
|
|
|
|
static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
|
|
|
|
static int ext_cmp(const X509V3_EXT_METHOD *const *a,
|
|
const X509V3_EXT_METHOD *const *b);
|
|
static void ext_list_free(X509V3_EXT_METHOD *ext);
|
|
|
|
int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
|
|
{
|
|
if (ext_list == NULL
|
|
&& (ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp)) == NULL) {
|
|
X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
|
|
X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int ext_cmp(const X509V3_EXT_METHOD *const *a,
|
|
const X509V3_EXT_METHOD *const *b)
|
|
{
|
|
return ((*a)->ext_nid - (*b)->ext_nid);
|
|
}
|
|
|
|
DECLARE_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
|
|
const X509V3_EXT_METHOD *, ext);
|
|
IMPLEMENT_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
|
|
const X509V3_EXT_METHOD *, ext);
|
|
|
|
#include "standard_exts.h"
|
|
|
|
const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
|
|
{
|
|
X509V3_EXT_METHOD tmp;
|
|
const X509V3_EXT_METHOD *t = &tmp, *const *ret;
|
|
int idx;
|
|
|
|
if (nid < 0)
|
|
return NULL;
|
|
tmp.ext_nid = nid;
|
|
ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT);
|
|
if (ret)
|
|
return *ret;
|
|
if (!ext_list)
|
|
return NULL;
|
|
idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
|
|
return sk_X509V3_EXT_METHOD_value(ext_list, idx);
|
|
}
|
|
|
|
const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
|
|
{
|
|
int nid;
|
|
if ((nid = OBJ_obj2nid(X509_EXTENSION_get_object(ext))) == NID_undef)
|
|
return NULL;
|
|
return X509V3_EXT_get_nid(nid);
|
|
}
|
|
|
|
int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
|
|
{
|
|
for (; extlist->ext_nid != -1; extlist++)
|
|
if (!X509V3_EXT_add(extlist))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int X509V3_EXT_add_alias(int nid_to, int nid_from)
|
|
{
|
|
const X509V3_EXT_METHOD *ext;
|
|
X509V3_EXT_METHOD *tmpext;
|
|
|
|
if ((ext = X509V3_EXT_get_nid(nid_from)) == NULL) {
|
|
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS, X509V3_R_EXTENSION_NOT_FOUND);
|
|
return 0;
|
|
}
|
|
if ((tmpext = OPENSSL_malloc(sizeof(*tmpext))) == NULL) {
|
|
X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
*tmpext = *ext;
|
|
tmpext->ext_nid = nid_to;
|
|
tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
|
|
return X509V3_EXT_add(tmpext);
|
|
}
|
|
|
|
void X509V3_EXT_cleanup(void)
|
|
{
|
|
sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
|
|
ext_list = NULL;
|
|
}
|
|
|
|
static void ext_list_free(X509V3_EXT_METHOD *ext)
|
|
{
|
|
if (ext->ext_flags & X509V3_EXT_DYNAMIC)
|
|
OPENSSL_free(ext);
|
|
}
|
|
|
|
/*
|
|
* Legacy function: we don't need to add standard extensions any more because
|
|
* they are now kept in ext_dat.h.
|
|
*/
|
|
|
|
int X509V3_add_standard_extensions(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/* Return an extension internal structure */
|
|
|
|
void *X509V3_EXT_d2i(X509_EXTENSION *ext)
|
|
{
|
|
const X509V3_EXT_METHOD *method;
|
|
const unsigned char *p;
|
|
ASN1_STRING *extvalue;
|
|
int extlen;
|
|
|
|
if ((method = X509V3_EXT_get(ext)) == NULL)
|
|
return NULL;
|
|
extvalue = X509_EXTENSION_get_data(ext);
|
|
p = ASN1_STRING_get0_data(extvalue);
|
|
extlen = ASN1_STRING_length(extvalue);
|
|
if (method->it)
|
|
return ASN1_item_d2i(NULL, &p, extlen, ASN1_ITEM_ptr(method->it));
|
|
return method->d2i(NULL, &p, extlen);
|
|
}
|
|
|
|
/*-
|
|
* Get critical flag and decoded version of extension from a NID.
|
|
* The "idx" variable returns the last found extension and can
|
|
* be used to retrieve multiple extensions of the same NID.
|
|
* However multiple extensions with the same NID is usually
|
|
* due to a badly encoded certificate so if idx is NULL we
|
|
* choke if multiple extensions exist.
|
|
* The "crit" variable is set to the critical value.
|
|
* The return value is the decoded extension or NULL on
|
|
* error. The actual error can have several different causes,
|
|
* the value of *crit reflects the cause:
|
|
* >= 0, extension found but not decoded (reflects critical value).
|
|
* -1 extension not found.
|
|
* -2 extension occurs more than once.
|
|
*/
|
|
|
|
void *X509V3_get_d2i(const STACK_OF(X509_EXTENSION) *x, int nid, int *crit,
|
|
int *idx)
|
|
{
|
|
int lastpos, i;
|
|
X509_EXTENSION *ex, *found_ex = NULL;
|
|
|
|
if (!x) {
|
|
if (idx)
|
|
*idx = -1;
|
|
if (crit)
|
|
*crit = -1;
|
|
return NULL;
|
|
}
|
|
if (idx)
|
|
lastpos = *idx + 1;
|
|
else
|
|
lastpos = 0;
|
|
if (lastpos < 0)
|
|
lastpos = 0;
|
|
for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
|
|
ex = sk_X509_EXTENSION_value(x, i);
|
|
if (OBJ_obj2nid(X509_EXTENSION_get_object(ex)) == nid) {
|
|
if (idx) {
|
|
*idx = i;
|
|
found_ex = ex;
|
|
break;
|
|
} else if (found_ex) {
|
|
/* Found more than one */
|
|
if (crit)
|
|
*crit = -2;
|
|
return NULL;
|
|
}
|
|
found_ex = ex;
|
|
}
|
|
}
|
|
if (found_ex) {
|
|
/* Found it */
|
|
if (crit)
|
|
*crit = X509_EXTENSION_get_critical(found_ex);
|
|
return X509V3_EXT_d2i(found_ex);
|
|
}
|
|
|
|
/* Extension not found */
|
|
if (idx)
|
|
*idx = -1;
|
|
if (crit)
|
|
*crit = -1;
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* This function is a general extension append, replace and delete utility.
|
|
* The precise operation is governed by the 'flags' value. The 'crit' and
|
|
* 'value' arguments (if relevant) are the extensions internal structure.
|
|
*/
|
|
|
|
int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
|
|
int crit, unsigned long flags)
|
|
{
|
|
int errcode, extidx = -1;
|
|
X509_EXTENSION *ext = NULL, *extmp;
|
|
STACK_OF(X509_EXTENSION) *ret = NULL;
|
|
unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
|
|
|
|
/*
|
|
* If appending we don't care if it exists, otherwise look for existing
|
|
* extension.
|
|
*/
|
|
if (ext_op != X509V3_ADD_APPEND)
|
|
extidx = X509v3_get_ext_by_NID(*x, nid, -1);
|
|
|
|
/* See if extension exists */
|
|
if (extidx >= 0) {
|
|
/* If keep existing, nothing to do */
|
|
if (ext_op == X509V3_ADD_KEEP_EXISTING)
|
|
return 1;
|
|
/* If default then its an error */
|
|
if (ext_op == X509V3_ADD_DEFAULT) {
|
|
errcode = X509V3_R_EXTENSION_EXISTS;
|
|
goto err;
|
|
}
|
|
/* If delete, just delete it */
|
|
if (ext_op == X509V3_ADD_DELETE) {
|
|
if (!sk_X509_EXTENSION_delete(*x, extidx))
|
|
return -1;
|
|
return 1;
|
|
}
|
|
} else {
|
|
/*
|
|
* If replace existing or delete, error since extension must exist
|
|
*/
|
|
if ((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
|
|
(ext_op == X509V3_ADD_DELETE)) {
|
|
errcode = X509V3_R_EXTENSION_NOT_FOUND;
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we get this far then we have to create an extension: could have
|
|
* some flags for alternative encoding schemes...
|
|
*/
|
|
|
|
ext = X509V3_EXT_i2d(nid, crit, value);
|
|
|
|
if (!ext) {
|
|
X509V3err(X509V3_F_X509V3_ADD1_I2D,
|
|
X509V3_R_ERROR_CREATING_EXTENSION);
|
|
return 0;
|
|
}
|
|
|
|
/* If extension exists replace it.. */
|
|
if (extidx >= 0) {
|
|
extmp = sk_X509_EXTENSION_value(*x, extidx);
|
|
X509_EXTENSION_free(extmp);
|
|
if (!sk_X509_EXTENSION_set(*x, extidx, ext))
|
|
return -1;
|
|
return 1;
|
|
}
|
|
|
|
ret = *x;
|
|
if (*x == NULL
|
|
&& (ret = sk_X509_EXTENSION_new_null()) == NULL)
|
|
goto m_fail;
|
|
if (!sk_X509_EXTENSION_push(ret, ext))
|
|
goto m_fail;
|
|
|
|
*x = ret;
|
|
return 1;
|
|
|
|
m_fail:
|
|
/* X509V3err(X509V3_F_X509V3_ADD1_I2D, ERR_R_MALLOC_FAILURE); */
|
|
if (ret != *x)
|
|
sk_X509_EXTENSION_free(ret);
|
|
X509_EXTENSION_free(ext);
|
|
return -1;
|
|
|
|
err:
|
|
if (!(flags & X509V3_ADD_SILENT))
|
|
X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode);
|
|
return 0;
|
|
}
|