Initial commit

3 files changed, 119 insertions, 0 deletions

diff --git a/lib/wmi_lite/version.rb b/lib/wmi_lite/version.rb
new file mode 100644
index 0000000..3c743f7
--- /dev/null
+++ b/lib/wmi_lite/version.rb
@@ -0,0 +1,3 @@
+module WmiLite
+  VERSION = '0.1.0'
+end
diff --git a/lib/wmi_lite/wmi.rb b/lib/wmi_lite/wmi.rb
new file mode 100644
index 0000000..4a30573
--- /dev/null
+++ b/lib/wmi_lite/wmi.rb
@@ -0,0 +1,68 @@
+#
+# Author:: Adam Edwards (<adamed@getchef.com>)
+# Copyright:: Copyright 2014 Chef Software, 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 'win32ole' if RUBY_PLATFORM =~ /mswin|mingw32|windows/
+
+module WmiLite
+  class Wmi
+    def initialize(namespace = nil)
+      @connection = new_connection(namespace.nil? ? 'root/cimv2' : namespace)
+    end
+
+    def query(wql_query)
+      results = start_query(wql_query)
+      
+      result_set = []
+
+      results.each do | result | 
+        result_set.push(wmi_result_to_snapshot(result))
+      end
+      
+      result_set
+    end
+
+    def instances_of(wmi_class)
+      query("select * from #{wmi_class}")
+    end
+
+    def first_of(wmi_class)
+      query_result = start_query("select * from #{wmi_class}")
+      first_result = nil
+      query_result.each do | record |
+        first_result = record
+        break
+      end
+      first_result.nil? ? nil : wmi_result_to_snapshot(first_result)
+    end
+
+    private
+
+    def start_query(wql_query)
+      @connection.ExecQuery(wql_query)
+    end
+
+    def new_connection(namespace)
+      locator = WIN32OLE.new("WbemScripting.SWbemLocator")
+      locator.ConnectServer('.', namespace)
+    end
+
+    def wmi_result_to_snapshot(wmi_object)
+      snapshot = Instance.wmi_ole_object_to_hash(wmi_object)
+    end
+  end
+end
diff --git a/lib/wmi_lite/wmi/wmi_instance.rb b/lib/wmi_lite/wmi/wmi_instance.rb
new file mode 100644
index 0000000..d0b0474
--- /dev/null
+++ b/lib/wmi_lite/wmi/wmi_instance.rb
@@ -0,0 +1,48 @@
+#
+# Author:: Adam Edwards (<adamed@getchef.com>)
+# Copyright:: Copyright 2014 Chef Software, 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.
+#
+module WmiLite
+  class Wmi
+    class Instance
+
+      attr_reader :wmi_ole_object
+
+      def initialize(wmi_ole_object)
+        @wmi_ole_object = wmi_ole_object
+        @property_map = self.class.wmi_ole_object_to_hash(wmi_ole_object)
+      end
+
+      def [](key)
+        @property_map[key]
+      end
+
+      private
+
+      def self.wmi_ole_object_to_hash(wmi_object)
+        property_map = {}
+        wmi_object.properties_.each do |property|
+          property_map[property.name.downcase] = wmi_object.invoke(property.name)
+        end
+
+        property_map[:wmi_object] = wmi_object
+
+        property_map.freeze
+      end
+
+    end
+  end
+end