Added workaround for Windows Server 2019

Resolves: rhbz#1867047

ppp-2.4.8-ws-2019-workaround.patch

@@ -0,0 +1,27 @@
+From 3cd95baf3f1de1d5a9bc89be0f4c3215ceb5aefe Mon Sep 17 00:00:00 2001
+From: yannayl <yannayl@users.noreply.github.com>
+Date: Sun, 12 Jul 2020 12:12:08 +0300
+Subject: [PATCH] Accept Malformed Windows Success Message
+
+Windows Server 2019 skip a space when sending a success message.
+This commit accepts such a malformed message and continues normally.
+
+Signed-off-by: Yannay Linveh <yannayl@gmail.com>
+Signed-off-by: yannayl <yannayl@users.noreply.github.com>
+---
+ pppd/chap_ms.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/pppd/chap_ms.c b/pppd/chap_ms.c
+index 1de50428..ffb6bd13 100644
+--- a/pppd/chap_ms.c
++++ b/pppd/chap_ms.c
+@@ -423,6 +423,8 @@ chapms2_check_success(int id, unsigned char *msg, int len)
+ 	len -= MS_AUTH_RESPONSE_LENGTH;
+ 	if ((len >= 3) && !strncmp((char *)msg, " M=", 3)) {
+ 		msg += 3; /* Eat the delimiter */
++	} else 	if ((len >= 2) && !strncmp((char *)msg, "M=", 2)) {
++		msg += 2; /* Eat the delimiter */
+ 	} else if (len) {
+ 		/* Packet has extra text which does not begin " M=" */
+ 		error("MS-CHAPv2 Success packet is badly formed.");

ppp.spec

@@ -2,7 +2,7 @@
 
 Name:    ppp
 Version: 2.4.8
-Release: 7%{?dist}
+Release: 8%{?dist}
 Summary: The Point-to-Point Protocol daemon
 License: BSD and LGPLv2+ and GPLv2+ and Public Domain
 URL:     http://www.samba.org/ppp
@@ -52,6 +52,8 @@ Patch0026:      ppp-2.4.8-eaptls-mppe-1.300.patch
 Patch0032:      ppp-2.4.8-CVE-2020-8597.patch
 # rhbz#1612918, https://github.com/paulusmack/ppp/pull/149
 Patch0033:      ppp-2.4.8-man-fix.patch
+# rhbz#1867047, https://github.com/paulusmack/ppp/commit/3cd95baf3f1de1d5a9bc89be0f4c3215ceb5aefe.patch
+Patch0034:      ppp-2.4.8-ws-2019-workaround.patch
 
 BuildRequires: gcc
 BuildRequires: pam-devel, libpcap-devel, systemd, systemd-devel, glib2-devel
@@ -186,6 +188,10 @@ mkdir -p %{buildroot}%{_rundir}/lock/ppp
 %doc PLUGINS
 
 %changelog
+* Mon Aug 10 2020 Jaroslav Škarvada <jskarvad@redhat.com> - 2.4.8-8
+- Added workaround for Windows Server 2019
+  Resolves: rhbz#1867047
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2.4.8-7
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild