openvpn: update to 2.4.8

Backport two upstream commits that allow building
openvpn-openssl without OpenSSLs deprecated APIs.

Full changelog:
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24#OpenVPN2.4.8



Signed-off-by: Magnus Kroken <mkroken@gmail.com>

package/network/services/openvpn/Makefile

@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=openvpn
 
-PKG_VERSION:=2.4.7
-PKG_RELEASE:=2
+PKG_VERSION:=2.4.8
+PKG_RELEASE:=1
 
 PKG_SOURCE_URL:=\
 	https://build.openvpn.net/downloads/releases/ \
 	https://swupdate.openvpn.net/community/releases/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
-PKG_HASH:=a42f53570f669eaf10af68e98d65b531015ff9e12be7a62d9269ea684652f648
+PKG_HASH:=fb8ca66bb7807fff595fbdf2a0afd085c02a6aa47715c9aa3171002f9f1a3f91
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 
@@ -44,7 +44,7 @@ else
 endif
 endef
 
-Package/openvpn-openssl=$(call Package/openvpn/Default,openssl,OpenSSL,+PACKAGE_openvpn-openssl:libopenssl +@OPENSSL_WITH_DEPRECATED)
+Package/openvpn-openssl=$(call Package/openvpn/Default,openssl,OpenSSL,+PACKAGE_openvpn-openssl:libopenssl)
 Package/openvpn-mbedtls=$(call Package/openvpn/Default,mbedtls,mbedTLS,+PACKAGE_openvpn-mbedtls:libmbedtls)
 Package/openvpn-nossl=$(call Package/openvpn/Default,nossl,plaintext (no SSL))
 

package/network/services/openvpn/patches/110-openssl-dont-use-deprecated-ssleay-symbols.patch

+From 17a476fd5c8cc49f1d103a50199e87ede76b1b67 Mon Sep 17 00:00:00 2001
+From: Steffan Karger <steffan@karger.me>
+Date: Sun, 26 Nov 2017 16:04:00 +0100
+Subject: [PATCH] openssl: don't use deprecated SSLEAY/SSLeay symbols
+
+Compiling our current master against OpenSSL 1.1 with
+-DOPENSSL_API_COMPAT=0x10100000L screams bloody murder.  This patch fixes
+the errors about the deprecated SSLEAY/SSLeay symbols and defines.
+
+Signed-off-by: Steffan Karger <steffan@karger.me>
+Acked-by: Gert Doering <gert@greenie.muc.de>
+Message-Id: <20171126150401.28565-1-steffan@karger.me>
+URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg15934.html
+Signed-off-by: Gert Doering <gert@greenie.muc.de>
+---
+ configure.ac                 | 1 +
+ src/openvpn/openssl_compat.h | 8 ++++++++
+ src/openvpn/ssl_openssl.c    | 2 +-
+ 3 files changed, 10 insertions(+), 1 deletion(-)
+
+--- a/configure.ac
++++ b/configure.ac
+@@ -904,6 +904,7 @@ if test "${enable_crypto}" = "yes" -a "$
+ 			EVP_MD_CTX_free \
+ 			EVP_MD_CTX_reset \
+ 			EVP_CIPHER_CTX_reset \
++			OpenSSL_version \
+ 			SSL_CTX_get_default_passwd_cb \
+ 			SSL_CTX_get_default_passwd_cb_userdata \
+ 			SSL_CTX_set_security_level \
+--- a/src/openvpn/openssl_compat.h
++++ b/src/openvpn/openssl_compat.h
+@@ -689,6 +689,14 @@ EC_GROUP_order_bits(const EC_GROUP *grou
+ #endif
+ 
+ /* SSLeay symbols have been renamed in OpenSSL 1.1 */
++#ifndef OPENSSL_VERSION
++#define OPENSSL_VERSION SSLEAY_VERSION
++#endif
++
++#ifndef HAVE_OPENSSL_VERSION
++#define OpenSSL_version SSLeay_version
++#endif
++
+ #if !defined(RSA_F_RSA_OSSL_PRIVATE_ENCRYPT)
+ #define RSA_F_RSA_OSSL_PRIVATE_ENCRYPT       RSA_F_RSA_EAY_PRIVATE_ENCRYPT
+ #endif
+--- a/src/openvpn/ssl_openssl.c
++++ b/src/openvpn/ssl_openssl.c
+@@ -1977,7 +1977,7 @@ get_highest_preference_tls_cipher(char *
+ const char *
+ get_ssl_library_version(void)
+ {
+-    return SSLeay_version(SSLEAY_VERSION);
++    return OpenSSL_version(OPENSSL_VERSION);
+ }
+ 
+ #endif /* defined(ENABLE_CRYPTO) && defined(ENABLE_CRYPTO_OPENSSL) */

package/network/services/openvpn/patches/111-openssl-add-missing-include-statements.patch

+From 1987498271abadf042d8bb3feee1fe0d877a9d55 Mon Sep 17 00:00:00 2001
+From: Steffan Karger <steffan@karger.me>
+Date: Sun, 26 Nov 2017 16:49:12 +0100
+Subject: [PATCH] openssl: add missing #include statements
+
+Compiling our current master against OpenSSL 1.1 with
+-DOPENSSL_API_COMPAT=0x10100000L screams bloody murder.  This patch fixes
+the errors caused by missing includes.  Previous openssl versions would
+usually include 'the rest of the world', but they're fixing that.  So we
+should no longer rely on it.
+
+(And sneaking in alphabetic ordering of the includes while touching them.)
+
+Signed-off-by: Steffan Karger <steffan@karger.me>
+Acked-by: Gert Doering <gert@greenie.muc.de>
+Message-Id: <20171126154912.13283-1-steffan@karger.me>
+URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg15936.html
+Signed-off-by: Gert Doering <gert@greenie.muc.de>
+---
+ src/openvpn/openssl_compat.h     | 1 +
+ src/openvpn/ssl_openssl.c        | 6 +++++-
+ src/openvpn/ssl_verify_openssl.c | 3 ++-
+ 3 files changed, 8 insertions(+), 2 deletions(-)
+
+--- a/src/openvpn/openssl_compat.h
++++ b/src/openvpn/openssl_compat.h
+@@ -42,6 +42,7 @@
+ 
+ #include "buffer.h"
+ 
++#include <openssl/rsa.h>
+ #include <openssl/ssl.h>
+ #include <openssl/x509.h>
+ 
+--- a/src/openvpn/ssl_openssl.c
++++ b/src/openvpn/ssl_openssl.c
+@@ -52,10 +52,14 @@
+ 
+ #include "ssl_verify_openssl.h"
+ 
++#include <openssl/bn.h>
++#include <openssl/crypto.h>
++#include <openssl/dh.h>
++#include <openssl/dsa.h>
+ #include <openssl/err.h>
+ #include <openssl/pkcs12.h>
++#include <openssl/rsa.h>
+ #include <openssl/x509.h>
+-#include <openssl/crypto.h>
+ #ifndef OPENSSL_NO_EC
+ #include <openssl/ec.h>
+ #endif
+--- a/src/openvpn/ssl_verify_openssl.c
++++ b/src/openvpn/ssl_verify_openssl.c
+@@ -44,8 +44,9 @@
+ #include "ssl_verify_backend.h"
+ #include "openssl_compat.h"
+ 
+-#include <openssl/x509v3.h>
++#include <openssl/bn.h>
+ #include <openssl/err.h>
++#include <openssl/x509v3.h>
+ 
+ int
+ verify_callback(int preverify_ok, X509_STORE_CTX *ctx)

package/network/services/openvpn/patches/210-build_always_use_internal_lz4.patch

 --- a/configure.ac
 +++ b/configure.ac
-@@ -1078,68 +1078,15 @@ dnl
+@@ -1080,68 +1080,15 @@ dnl
  AC_ARG_VAR([LZ4_CFLAGS], [C compiler flags for lz4])
  AC_ARG_VAR([LZ4_LIBS], [linker flags for lz4])
  if test "$enable_lz4" = "yes" && test "$enable_comp_stub" = "no"; then

package/network/services/openvpn/patches/220-disable_des.patch

@@ -66,7 +66,7 @@
  }
  
  /*
-@@ -710,10 +718,12 @@ cipher_des_encrypt_ecb(const unsigned ch
+@@ -705,10 +713,12 @@ cipher_des_encrypt_ecb(const unsigned ch
                         unsigned char *src,
                         unsigned char *dst)
  {