write cherrypy.config if needed

plinth.py

@@ -7,6 +7,33 @@ import cfg
 if not os.path.join(cfg.file_root, "vendor") in sys.path:
    sys.path.append(os.path.join(cfg.file_root, "vendor"))
 
+
+def write_cherrypy_config_if_needed():
+   """If there is no cherrpy.config, write one."""
+   if not os.path.exists(os.path.join(cfg.file_root, "cherrypy.config")):
+      with open(os.path.join(cfg.file_root, "cherrypy.config"), 'w') as OUTF:
+         OUTF.write("""
+[global]
+server.socket_host = '0.0.0.0'
+server.socket_port = 8000
+server.thread_pool = 10
+tools.staticdir.root = "%(file_root)s"
+tools.sessions.on = True
+tools.auth.on = True
+tools.sessions.storage_type = "file"
+tools.sessions.timeout = 90
+tools.sessions.storage_path = "%(data_dir)s/cherrypy_sessions"
+
+[/static]
+tools.staticdir.on = True
+tools.staticdir.dir = "static"
+
+[/favicon.ico]
+tools.staticfile.on = True
+tools.staticfile.filename = "%(file_root)s/static/theme/favicon.ico"
+""" % {'data_dir':cfg.data_dir, 'file_root':cfg.file_root})
+
+write_cherrypy_config_if_needed()
 import cherrypy
 from cherrypy import _cpserver
 from cherrypy.process.plugins import Daemonizer