Hugh McMaster : reg: Fail if a system key has a trailing backslash but no subkey path.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 797520db8f7eb708845891da6f08d3030393d6bc
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=797520db8f7eb708845891da6f08d3030393d6bc

Author: Hugh McMaster <hugh.mcmaster at outlook.com>
Date:   Tue Apr 20 23:21:59 2021 +1000

reg: Fail if a system key has a trailing backslash but no subkey path.

Signed-off-by: Hugh McMaster <hugh.mcmaster at outlook.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 programs/reg/reg.c       | 16 +++++++++++++---
 programs/reg/tests/add.c |  8 ++++----
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/programs/reg/reg.c b/programs/reg/reg.c
index 7ed45b73ad8..69107d54b92 100644
--- a/programs/reg/reg.c
+++ b/programs/reg/reg.c
@@ -234,9 +234,6 @@ BOOL parse_registry_key(const WCHAR *key, HKEY *root, WCHAR **path)
     if (!sane_path(key))
         return FALSE;
 
-    *path = wcschr(key, '\\');
-    if (*path) (*path)++;
-
     *root = path_get_rootkey(key);
     if (!*root)
     {
@@ -244,6 +241,19 @@ BOOL parse_registry_key(const WCHAR *key, HKEY *root, WCHAR **path)
         return FALSE;
     }
 
+    *path = wcschr(key, '\\');
+
+    if (!*path)
+        return TRUE;
+
+    (*path)++;
+
+    if (!**path)
+    {
+        output_message(STRING_INVALID_SYSTEM_KEY);
+        return FALSE;
+    }
+
     return TRUE;
 }
 
diff --git a/programs/reg/tests/add.c b/programs/reg/tests/add.c
index 36b5f821350..6973eefd892 100644
--- a/programs/reg/tests/add.c
+++ b/programs/reg/tests/add.c
@@ -311,12 +311,12 @@ static void test_key_formats(void)
 
     /* Test validity of trailing backslash after system key */
     run_reg_exe("reg add HKCU\\ /v Value1 /t REG_SZ /d foo /f", &r);
-    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
-    todo_wine verify_reg_nonexist(HKEY_CURRENT_USER, "Value1");
+    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
+    verify_reg_nonexist(HKEY_CURRENT_USER, "Value1");
 
     run_reg_exe("reg add HKEY_CURRENT_USER\\ /v Value2 /t REG_SZ /d bar /f", &r);
-    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
-    todo_wine verify_reg_nonexist(HKEY_CURRENT_USER, "Value2");
+    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
+    verify_reg_nonexist(HKEY_CURRENT_USER, "Value2");
 }
 
 static void test_add(void)