From 6d53ad6b5cf726d92860e973d7bc8c1930762086 Mon Sep 17 00:00:00 2001 From: Matt Caswell Date: Fri, 24 Jan 2020 16:07:51 +0000 Subject: [PATCH] Teach more BIOs how to handle BIO_CTRL_EOF Reviewed-by: Dmitry Belyavskiy (Merged from https://github.com/openssl/openssl/pull/10907) --- crypto/bio/bss_acpt.c | 7 ++++++- crypto/bio/bss_conn.c | 5 +++++ crypto/bio/bss_fd.c | 5 +++++ 3 files changed, 16 insertions(+), 1 deletion(-) diff --git a/crypto/bio/bss_acpt.c b/crypto/bio/bss_acpt.c index 3d2937594e..a3b3f21cab 100644 --- a/crypto/bio/bss_acpt.c +++ b/crypto/bio/bss_acpt.c @@ -526,7 +526,12 @@ static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr) break; case BIO_CTRL_DUP: break; - + case BIO_CTRL_EOF: + if (b->next_bio == NULL) + ret = 0; + else + ret = BIO_ctrl(b->next_bio, cmd, num, ptr); + break; default: ret = 0; break; diff --git a/crypto/bio/bss_conn.c b/crypto/bio/bss_conn.c index 3abf2354a5..6c554ff6e6 100644 --- a/crypto/bio/bss_conn.c +++ b/crypto/bio/bss_conn.c @@ -313,6 +313,8 @@ static int conn_read(BIO *b, char *out, int outl) if (ret <= 0) { if (BIO_sock_should_retry(ret)) BIO_set_retry_read(b); + else if (ret == 0) + b->flags |= BIO_FLAGS_IN_EOF; } } return ret; @@ -492,6 +494,9 @@ static long conn_ctrl(BIO *b, int cmd, long num, void *ptr) *fptr = data->info_callback; } break; + case BIO_CTRL_EOF: + ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0; + break; default: ret = 0; break; diff --git a/crypto/bio/bss_fd.c b/crypto/bio/bss_fd.c index 9db3317e9a..599790d654 100644 --- a/crypto/bio/bss_fd.c +++ b/crypto/bio/bss_fd.c @@ -123,6 +123,8 @@ static int fd_read(BIO *b, char *out, int outl) if (ret <= 0) { if (BIO_fd_should_retry(ret)) BIO_set_retry_read(b); + else if (ret == 0) + b->flags |= BIO_FLAGS_IN_EOF; } } return ret; @@ -186,6 +188,9 @@ static long fd_ctrl(BIO *b, int cmd, long num, void *ptr) case BIO_CTRL_FLUSH: ret = 1; break; + case BIO_CTRL_EOF: + ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0; + break; default: ret = 0; break; -- 2.25.1