1 files changed, 101 insertions, 0 deletions
diff --git a/lib/chef/util/windows/net_group.rb b/lib/chef/util/windows/net_group.rb
new file mode 100644
index 0000000000..9da0dc6557
--- /dev/null
+++ b/lib/chef/util/windows/net_group.rb
@@ -0,0 +1,101 @@
+#
+# Author:: Doug MacEachern (<dougm@vmware.com>)
+# Copyright:: Copyright (c) 2010 VMware, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require 'chef/util/windows'
+
+#wrapper around a subset of the NetGroup* APIs.
+#nothing Chef specific, but not complete enough to be its own gem, so util for now.
+class Chef::Util::Windows::NetGroup < Chef::Util::Windows
+
+  private
+
+  def pack_str(s)
+    [str_to_ptr(s)].pack('L')
+  end
+
+  def modify_members(members, func)
+    buffer = 0.chr * (members.size * PTR_SIZE)
+    members.each_with_index do |member,offset|
+      buffer[offset*PTR_SIZE,PTR_SIZE] = pack_str(multi_to_wide(member))
+    end
+    rc = func.call(nil, @name, 3, buffer, members.size)
+    if rc != NERR_Success
+      raise ArgumentError, get_last_error(rc)
+    end
+  end
+
+  public
+
+  def initialize(groupname)
+    @name = multi_to_wide(groupname)
+  end
+
+  def local_get_members
+    group_members = []
+    handle = 0.chr * PTR_SIZE
+    rc = ERROR_MORE_DATA
+
+    while rc == ERROR_MORE_DATA
+      ptr   = 0.chr * PTR_SIZE
+      nread = 0.chr * PTR_SIZE
+      total = 0.chr * PTR_SIZE
+
+      rc = NetLocalGroupGetMembers.call(nil, @name, 1, ptr, -1,
+                                        nread, total, handle)
+      if (rc == NERR_Success) || (rc == ERROR_MORE_DATA)
+        ptr = ptr.unpack('L')[0]
+        nread = nread.unpack('i')[0]
+        members = 0.chr * (nread * (PTR_SIZE * 3)) #nread * sizeof(LOCALGROUP_MEMBERS_INFO_1)
+        memcpy(members, ptr, members.size)
+
+        #3 pointer fields in LOCALGROUP_MEMBERS_INFO_1, offset 2*PTR_SIZE is lgrmi1_name
+        nread.times do |i|
+          offset = (i * 3) + 2
+          member = lpwstr_to_s(members, offset)
+          group_members << member
+        end
+        NetApiBufferFree(ptr)
+      else
+        raise ArgumentError, get_last_error(rc)
+      end
+    end
+    group_members
+  end
+
+  def local_add
+    rc = NetLocalGroupAdd.call(nil, 0, pack_str(@name), nil)
+    if rc != NERR_Success
+      raise ArgumentError, get_last_error(rc)
+    end
+  end
+
+  def local_set_members(members)
+    modify_members(members, NetLocalGroupSetMembers)
+  end
+
+  def local_add_members(members)
+    modify_members(members, NetLocalGroupAddMembers)
+  end
+
+  def local_delete
+    rc = NetLocalGroupDel.call(nil, @name)
+    if rc != NERR_Success
+      raise ArgumentError, get_last_error(rc)
+    end
+  end
+end