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This patch reverts a change in 1.1.1e that can break applications that do
not expect EOF to be reported via SSL_ERROR_SSL.
https://bugs.python.org/issue40018
https://github.com/openssl/openssl/pull/11400
https://github.com/openssl/openssl/commit/0cd2ee64bffcdece599c3e4b5fac3830a55dc0fa
Taken from upstream:
https://github.com/openssl/openssl/commit/30d190caf311d534867df97e26b552e628cb7d85
diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt
index f5324c6819d8..35512f9caf96 100644
--- a/crypto/err/openssl.txt
+++ b/crypto/err/openssl.txt
@@ -2852,7 +2852,6 @@ SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES:242:unable to load ssl3 md5 routines
SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES:243:unable to load ssl3 sha1 routines
SSL_R_UNEXPECTED_CCS_MESSAGE:262:unexpected ccs message
SSL_R_UNEXPECTED_END_OF_EARLY_DATA:178:unexpected end of early data
-SSL_R_UNEXPECTED_EOF_WHILE_READING:294:unexpected eof while reading
SSL_R_UNEXPECTED_MESSAGE:244:unexpected message
SSL_R_UNEXPECTED_RECORD:245:unexpected record
SSL_R_UNINITIALIZED:276:uninitialized
diff --git a/include/openssl/sslerr.h b/include/openssl/sslerr.h
index 0ef684f3c131..ba4c4ae5fbd3 100644
--- a/include/openssl/sslerr.h
+++ b/include/openssl/sslerr.h
@@ -1,6 +1,6 @@
/*
* Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -734,7 +734,6 @@ int ERR_load_SSL_strings(void);
# define SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES 243
# define SSL_R_UNEXPECTED_CCS_MESSAGE 262
# define SSL_R_UNEXPECTED_END_OF_EARLY_DATA 178
-# define SSL_R_UNEXPECTED_EOF_WHILE_READING 294
# define SSL_R_UNEXPECTED_MESSAGE 244
# define SSL_R_UNEXPECTED_RECORD 245
# define SSL_R_UNINITIALIZED 276
diff --git a/ssl/record/rec_layer_s3.c b/ssl/record/rec_layer_s3.c
index 1c885a664f35..b2a7a47eb075 100644
--- a/ssl/record/rec_layer_s3.c
+++ b/ssl/record/rec_layer_s3.c
@@ -296,12 +296,6 @@ int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold,
ret = BIO_read(s->rbio, pkt + len + left, max - left);
if (ret >= 0)
bioread = ret;
- if (ret <= 0
- && !BIO_should_retry(s->rbio)
- && BIO_eof(s->rbio)) {
- SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL3_READ_N,
- SSL_R_UNEXPECTED_EOF_WHILE_READING);
- }
} else {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_READ_N,
SSL_R_READ_BIO_NOT_SET);
diff --git a/ssl/ssl_err.c b/ssl/ssl_err.c
index a0c7b79659d4..4b12ed1485d9 100644
--- a/ssl/ssl_err.c
+++ b/ssl/ssl_err.c
@@ -1,6 +1,6 @@
/*
* Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -1205,8 +1205,6 @@ static const ERR_STRING_DATA SSL_str_reasons[] = {
"unexpected ccs message"},
{ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_END_OF_EARLY_DATA),
"unexpected end of early data"},
- {ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_EOF_WHILE_READING),
- "unexpected eof while reading"},
{ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_MESSAGE), "unexpected message"},
{ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNEXPECTED_RECORD), "unexpected record"},
{ERR_PACK(ERR_LIB_SSL, 0, SSL_R_UNINITIALIZED), "uninitialized"},
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