1 files changed, 27 insertions, 0 deletions
diff --git a/src/lib/Bcfg2/Server/Plugins/Cfg/CfgDiffFilter.py b/src/lib/Bcfg2/Server/Plugins/Cfg/CfgDiffFilter.py
new file mode 100644
index 000000000..b408e1b55
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Plugins/Cfg/CfgDiffFilter.py
@@ -0,0 +1,27 @@
+import os
+import logging
+import tempfile
+import Bcfg2.Server.Plugin
+from subprocess import Popen, PIPE
+from Bcfg2.Server.Plugins.Cfg import CfgFilter
+
+logger = logging.getLogger(__name__)
+
+class CfgDiffFilter(CfgFilter):
+    __extensions__ = ['diff']
+
+    def modify_data(self, entry, metadata, data):
+        basehandle, basename = tempfile.mkstemp()
+        open(basename, 'w').write(data)
+        os.close(basehandle)
+
+        cmd = ["patch", "-u", "-f", basefile.name]
+        patch = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
+        stderr = patch.communicate(input=self.data)[1]
+        ret = patch.wait()
+        output = open(basefile.name, 'r').read()
+        os.unlink(basefile.name)
+        if ret >> 8 != 0:
+            logger.error("Error applying diff %s: %s" % (delta.name, stderr))
+            raise Bcfg2.Server.Plugin.PluginExecutionError('delta', delta)
+        return output