upstream: Move checks for lists of users or groups into their own

function. This is a no-op on OpenBSD but will make things easier in
-portable, eg on systems where these checks should be case-insensitive.  ok
djm@

OpenBSD-Commit-ID: 8bc9c8d98670e23f8eaaaefe29c1f98e7ba0487e

Author: daztucker

Diff for: groupaccess.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: groupaccess.c,v 1.16 2015/05/04 06:10:48 djm Exp $ */
+/* $OpenBSD: groupaccess.c,v 1.17 2019/03/06 22:14:23 dtucker Exp $ */
 /*
  * Copyright (c) 2001 Kevin Steves.  All rights reserved.
  *
@@ -103,11 +103,8 @@ ga_match_pattern_list(const char *group_pattern)
 	int i, found = 0;
 
 	for (i = 0; i < ngroups; i++) {
-#ifndef HAVE_CYGWIN
-		switch (match_pattern_list(groups_byname[i], group_pattern, 0)) {
-#else
-		switch (match_pattern_list(groups_byname[i], group_pattern, 1)) {
-#endif
+		switch (match_usergroup_pattern_list(groups_byname[i],
+		    group_pattern)) {
 		case -1:
 			return 0;	/* Negated match wins */
 		case 0:

Diff for: match.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: match.c,v 1.38 2018/07/04 13:49:31 djm Exp $ */
+/* $OpenBSD: match.c,v 1.39 2019/03/06 22:14:23 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <[email protected]>
  * Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
@@ -174,6 +174,19 @@ match_pattern_list(const char *string, const char *pattern, int dolower)
 
 #endif
 
+/* Match a list representing users or groups. */
+int
+match_usergroup_pattern_list(const char *string, const char *pattern)
+{
+#ifndef HAVE_CYGWIN
+	/* Case sensitive match */
+	return match_pattern_list(string, pattern, 0);
+#else
+	/* Case insensitive match */
+	return match_pattern_list(string, pattern, 1);
+#endif
+}
+
 /*
  * Tries to match the host name (which must be in all lowercase) against the
  * comma-separated sequence of subpatterns (each possibly preceded by ! to

Diff for: match.h

@@ -1,4 +1,4 @@
-/* $OpenBSD: match.h,v 1.18 2018/07/04 13:49:31 djm Exp $ */
+/* $OpenBSD: match.h,v 1.19 2019/03/06 22:14:23 dtucker Exp $ */
 
 /*
  * Author: Tatu Ylonen <[email protected]>
@@ -16,6 +16,7 @@
 
 int	 match_pattern(const char *, const char *);
 int	 match_pattern_list(const char *, const char *, int);
+int	 match_usergroup_pattern_list(const char *, const char *);
 int	 match_hostname(const char *, const char *);
 int	 match_host_and_ip(const char *, const char *, const char *);
 int	 match_user(const char *, const char *, const char *, const char *);

Diff for: servconf.c

@@ -1,5 +1,5 @@
 
-/* $OpenBSD: servconf.c,v 1.348 2019/01/24 02:34:52 dtucker Exp $ */
+/* $OpenBSD: servconf.c,v 1.349 2019/03/06 22:14:23 dtucker Exp $ */
 /*
  * Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
  *                    All rights reserved
@@ -1049,11 +1049,7 @@ match_cfg_line(char **condition, int line, struct connection_info *ci)
 			}
 			if (ci->user == NULL)
 				match_test_missing_fatal("User", "user");
-#ifndef HAVE_CYGWIN
-			if (match_pattern_list(ci->user, arg, 0) != 1)
-#else
-			if (match_pattern_list(ci->user, arg, 1) != 1)
-#endif
+			if (match_usergroup_pattern_list(ci->user, arg) != 1)
 				result = 0;
 			else
 				debug("user %.100s matched 'User %.100s' at "