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Fix BIO_f_asn1() to properly report some errors

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Some things that may go wrong in asn1_bio_write() are serious errors
that should be reported as -1, rather than 0 (which just means "we wrote
no data").

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19918)
This commit is contained in:
Matt Caswell 2022-12-06 14:35:53 +00:00 committed by Tomas Mraz
parent 9e5bd8923b
commit 0f48050b5a
1 changed files with 2 additions and 2 deletions
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4
crypto/asn1/bio_asn1.c
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@ -172,7 +172,7 @@ static int asn1_bio_write(BIO *b, const char *in, int inl)
case ASN1_STATE_START:
if (!asn1_bio_setup_ex(b, ctx, ctx->prefix,
ASN1_STATE_PRE_COPY, ASN1_STATE_HEADER))
return 0;
return -1;
break;
/* Copy any pre data first */
@ -189,7 +189,7 @@ static int asn1_bio_write(BIO *b, const char *in, int inl)
case ASN1_STATE_HEADER:
ctx->buflen = ASN1_object_size(0, inl, ctx->asn1_tag) - inl;
if (!ossl_assert(ctx->buflen <= ctx->bufsize))
return 0;
return -1;
p = ctx->buf;
ASN1_put_object(&p, 0, inl, ctx->asn1_tag, ctx->asn1_class);
ctx->copylen = inl;