openssl/crypto/asn1/a_dup.c
Richard Levitte e077455e9e Stop raising ERR_R_MALLOC_FAILURE in most places
Since OPENSSL_malloc() and friends report ERR_R_MALLOC_FAILURE, and
at least handle the file name and line number they are called from,
there's no need to report ERR_R_MALLOC_FAILURE where they are called
directly, or when SSLfatal() and RLAYERfatal() is used, the reason
`ERR_R_MALLOC_FAILURE` is changed to `ERR_R_CRYPTO_LIB`.

There were a number of places where `ERR_R_MALLOC_FAILURE` was reported
even though it was a function from a different sub-system that was
called.  Those places are changed to report ERR_R_{lib}_LIB, where
{lib} is the name of that sub-system.
Some of them are tricky to get right, as we have a lot of functions
that belong in the ASN1 sub-system, and all the `sk_` calls or from
the CRYPTO sub-system.

Some extra adaptation was necessary where there were custom OPENSSL_malloc()
wrappers, and some bugs are fixed alongside these changes.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19301)
2022-10-05 14:02:03 +02:00

96 lines
2.3 KiB
C

/*
* 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/asn1t.h>
#ifndef NO_OLD_ASN1
void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, const void *x)
{
unsigned char *b, *p;
const unsigned char *p2;
int i;
char *ret;
if (x == NULL)
return NULL;
i = i2d(x, NULL);
if (i <= 0)
return NULL;
b = OPENSSL_malloc(i + 10);
if (b == NULL)
return NULL;
p = b;
i = i2d(x, &p);
p2 = b;
ret = d2i(NULL, &p2, i);
OPENSSL_free(b);
return ret;
}
#endif
/*
* ASN1_ITEM version of dup: this follows the model above except we don't
* need to allocate the buffer. At some point this could be rewritten to
* directly dup the underlying structure instead of doing and encode and
* decode.
*/
void *ASN1_item_dup(const ASN1_ITEM *it, const void *x)
{
ASN1_aux_cb *asn1_cb = NULL;
unsigned char *b = NULL;
const unsigned char *p;
long i;
ASN1_VALUE *ret;
OSSL_LIB_CTX *libctx = NULL;
const char *propq = NULL;
if (x == NULL)
return NULL;
if (it->itype == ASN1_ITYPE_SEQUENCE || it->itype == ASN1_ITYPE_CHOICE
|| it->itype == ASN1_ITYPE_NDEF_SEQUENCE) {
const ASN1_AUX *aux = it->funcs;
asn1_cb = aux != NULL ? aux->asn1_cb : NULL;
}
if (asn1_cb != NULL) {
if (!asn1_cb(ASN1_OP_DUP_PRE, (ASN1_VALUE **)&x, it, NULL)
|| !asn1_cb(ASN1_OP_GET0_LIBCTX, (ASN1_VALUE **)&x, it, &libctx)
|| !asn1_cb(ASN1_OP_GET0_PROPQ, (ASN1_VALUE **)&x, it, &propq))
goto auxerr;
}
i = ASN1_item_i2d(x, &b, it);
if (b == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
return NULL;
}
p = b;
ret = ASN1_item_d2i_ex(NULL, &p, i, it, libctx, propq);
OPENSSL_free(b);
if (asn1_cb != NULL
&& !asn1_cb(ASN1_OP_DUP_POST, &ret, it, (void *)x))
goto auxerr;
return ret;
auxerr:
ERR_raise_data(ERR_LIB_ASN1, ASN1_R_AUX_ERROR, "Type=%s", it->sname);
return NULL;
}