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Don't call BIO_number_{read|written} on NULL BIOs.

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OpenSSL doesn't document the behaviour of these functions when given a
NULL BIO, and it happens to return zero at the moment. But don't depend
on that.

Closes: #406 (cherry-picked)
This commit is contained in:
Adam Langley 2016-10-12 17:49:17 -07:00 committed by Azat Khuzhin
parent f9803a6943
commit 6702da1a8c
1 changed files with 4 additions and 4 deletions
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8
bufferevent_openssl.c
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@ -542,10 +542,10 @@ conn_closed(struct bufferevent_openssl *bev_ssl, int when, int errcode, int ret)
static void
init_bio_counts(struct bufferevent_openssl *bev_ssl)
{
bev_ssl->counts.n_written =
BIO_number_written(SSL_get_wbio(bev_ssl->ssl));
bev_ssl->counts.n_read =
BIO_number_read(SSL_get_rbio(bev_ssl->ssl));
BIO *wbio = SSL_get_wbio(bev_ssl->ssl);
bev_ssl->counts.n_written = wbio ? BIO_number_written(wbio) : 0;
BIO *rbio = SSL_get_rbio(bev_ssl->ssl);
bev_ssl->counts.n_read = rbio ? BIO_number_read(rbio) : 0;
}
static inline void