openssl: revert EOF detection change in 1.1.1

This adds patches to avoid possible application breakage caused by a
change in behavior introduced in 1.1.1e.  It affects at least nginx,
which logs error messages such as:
nginx[16652]: [crit] 16675#0: *358 SSL_read() failed (SSL: error:
4095126:SSL routines:ssl3_read_n:unexpected eof while reading) while
keepalive, client: xxxx, server: [::]:443

Openssl commits db943f4 (Detect EOF while reading in libssl), and
22623e0 (Teach more BIOs how to handle BIO_CTRL_EOF) changed the
behavior when encountering an EOF in SSL_read().  Previous behavior was
to return SSL_ERROR_SYSCALL, but errno would still be 0.  The commits
being reverted changed it to SSL_ERRO_SSL, and add an error to the
stack, which is correct.  Unfortunately this affects a number of
applications that counted on the old behavior, including nginx.

The reversion was discussed in openssl/openssl#11378, and implemented as
PR openssl/openssl#11400.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

2 files changed, 81 insertions, 1 deletions

diff --git a/package/libs/openssl/Makefile b/package/libs/openssl/Makefile
index 353ae453f5..ca45549800 100644
--- a/package/libs/openssl/Makefile
+++ b/package/libs/openssl/Makefile
@@ -11,7 +11,7 @@ PKG_NAME:=openssl
 PKG_BASE:=1.1.1
 PKG_BUGFIX:=e
 PKG_VERSION:=$(PKG_BASE)$(PKG_BUGFIX)
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_USE_MIPS16:=0
 ENGINES_DIR=engines-1.1
 
diff --git a/package/libs/openssl/patches/200-Partially-revert-Detect-EOF-while-reading-in-libssl.patch b/package/libs/openssl/patches/200-Partially-revert-Detect-EOF-while-reading-in-libssl.patch
new file mode 100644
index 0000000000..c269dff07c
--- /dev/null
+++ b/package/libs/openssl/patches/200-Partially-revert-Detect-EOF-while-reading-in-libssl.patch
@@ -0,0 +1,80 @@
+From 30d190caf311d534867df97e26b552e628cb7d85 Mon Sep 17 00:00:00 2001
+From: Tomas Mraz <tmraz@fedoraproject.org>
+Date: Wed, 25 Mar 2020 14:15:31 +0100
+Subject: [PATCH] Partially revert "Detect EOF while reading in libssl"
+
+This partially reverts commit db943f43a60d1b5b1277e4b5317e8f288e7a0a3a.
+
+Reviewed-by: Matt Caswell <matt@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/11400)
+
+diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt
+index f5324c6819..35512f9caf 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 0ef684f3c1..ba4c4ae5fb 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 1c885a664f..b2a7a47eb0 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 a0c7b79659..4b12ed1485 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"},