securable_resource functional specs compare default creation permissions against actual defaults on Windows

3 files changed, 60 insertions, 2 deletions

diff --git a/lib/chef/win32/api/security.rb b/lib/chef/win32/api/security.rb
index 229f2ace10..281e0b2271 100644
--- a/lib/chef/win32/api/security.rb
+++ b/lib/chef/win32/api/security.rb
@@ -270,6 +270,14 @@ class Chef
              :MaxTokenInfoClass
         ]
 
+        class TOKEN_OWNER < FFI::Struct
+          layout :Owner, :pointer
+        end
+
+        class TOKEN_PRIMARY_GROUP < FFI::Struct
+          layout :PrimaryGroup, :pointer
+        end
+
         # https://msdn.microsoft.com/en-us/library/windows/desktop/aa379572%28v=vs.85%29.aspx
         SECURITY_IMPERSONATION_LEVEL = enum :SECURITY_IMPERSONATION_LEVEL, [
              :SecurityAnonymous,
diff --git a/lib/chef/win32/security.rb b/lib/chef/win32/security.rb
index 3902d8caaf..1833d362a1 100644
--- a/lib/chef/win32/security.rb
+++ b/lib/chef/win32/security.rb
@@ -270,6 +270,36 @@ class Chef
         [ present.read_char != 0, acl.null? ? nil : ACL.new(acl, security_descriptor), defaulted.read_char != 0 ]
       end
 
+      def self.get_token_information_owner(token)
+        owner_result_size = FFI::MemoryPointer.new(:ulong)
+        if GetTokenInformation(token.handle.handle, :TokenOwner, nil, 0, owner_result_size)
+          raise "Expected ERROR_INSUFFICIENT_BUFFER from GetTokenInformation, and got no error!"
+        elsif FFI::LastError.error != ERROR_INSUFFICIENT_BUFFER
+          Chef::ReservedNames::Win32::Error.raise!
+        end
+        owner_result_storage = FFI::MemoryPointer.new owner_result_size.read_ulong
+        unless GetTokenInformation(token.handle.handle, :TokenOwner, owner_result_storage, owner_result_size.read_ulong, owner_result_size)
+          Chef::ReservedNames::Win32::Error.raise!
+        end
+        owner_result = TOKEN_OWNER.new owner_result_storage
+        SID.new(owner_result[:Owner], owner_result_storage)
+      end
+
+      def self.get_token_information_primary_group(token)
+        group_result_size = FFI::MemoryPointer.new(:ulong)
+        if GetTokenInformation(token.handle.handle, :TokenPrimaryGroup, nil, 0, group_result_size)
+          raise "Expected ERROR_INSUFFICIENT_BUFFER from GetTokenInformation, and got no error!"
+        elsif FFI::LastError.error != ERROR_INSUFFICIENT_BUFFER
+          Chef::ReservedNames::Win32::Error.raise!
+        end
+        group_result_storage = FFI::MemoryPointer.new group_result_size.read_ulong
+        unless GetTokenInformation(token.handle.handle, :TokenPrimaryGroup, group_result_storage, group_result_size.read_ulong, group_result_size)
+          Chef::ReservedNames::Win32::Error.raise!
+        end
+        group_result = TOKEN_PRIMARY_GROUP.new group_result_storage
+        SID.new(group_result[:PrimaryGroup], group_result_storage)
+      end
+
       def self.initialize_acl(acl_size)
         acl = FFI::MemoryPointer.new acl_size
         unless InitializeAcl(acl, acl_size, ACL_REVISION)
@@ -415,6 +445,10 @@ class Chef
         [ SecurityDescriptor.new(absolute_sd), SID.new(owner), SID.new(group), ACL.new(dacl), ACL.new(sacl) ]
       end
 
+      def self.open_current_process_token(desired_access = TOKEN_READ)
+        open_process_token(Chef::ReservedNames::Win32::Process.get_current_process, desired_access)
+      end
+
       def self.open_process_token(process, desired_access)
         process = process.handle if process.respond_to?(:handle)
         process = process.handle if process.respond_to?(:handle)
@@ -513,7 +547,7 @@ class Chef
 
       def self.with_privileges(*privilege_names)
         # Set privileges
-        token = open_process_token(Chef::ReservedNames::Win32::Process.get_current_process, TOKEN_READ | TOKEN_ADJUST_PRIVILEGES)
+        token = open_current_process_token(TOKEN_READ | TOKEN_ADJUST_PRIVILEGES)
         old_privileges = token.enable_privileges(*privilege_names)
 
         # Let the caller do their privileged stuff
@@ -533,7 +567,7 @@ class Chef
 
           true
         else
-          process_token = open_process_token(Chef::ReservedNames::Win32::Process.get_current_process, TOKEN_READ)
+          process_token = open_current_process_token(TOKEN_READ)
           elevation_result = FFI::Buffer.new(:ulong)
           elevation_result_size = FFI::MemoryPointer.new(:uint32)
           success = GetTokenInformation(process_token.handle.handle, :TokenElevation, elevation_result, 4, elevation_result_size)
diff --git a/lib/chef/win32/security/sid.rb b/lib/chef/win32/security/sid.rb
index 8e9407dc80..7f461fd766 100644
--- a/lib/chef/win32/security/sid.rb
+++ b/lib/chef/win32/security/sid.rb
@@ -203,6 +203,22 @@ class Chef
           SID.from_account("#{::ENV['USERDOMAIN']}\\#{::ENV['USERNAME']}")
         end
 
+        # See https://technet.microsoft.com/en-us/library/cc961992.aspx
+        # In practice, this is SID.Administrators if the current_user is an admin (even if not
+        # running elevated), and is current_user otherwise. On win2k3, it technically can be
+        # current_user in all cases if a certain group policy is set.
+        def self.default_security_object_owner
+          token = Chef::ReservedNames::Win32::Security.open_current_process_token
+          Chef::ReservedNames::Win32::Security.get_token_information_owner(token)
+        end
+
+        # See https://technet.microsoft.com/en-us/library/cc961996.aspx
+        # In practice, this is generally the same as current_user
+        def self.default_security_object_group
+          token = Chef::ReservedNames::Win32::Security.open_current_process_token
+          Chef::ReservedNames::Win32::Security.get_token_information_primary_group(token)
+        end
+
         def self.admin_account_name
           @admin_account_name ||= begin
             admin_account_name = nil