initial checkin of component server script

diff --git a/sfacomponent/server/sfa-component-server.py b/sfacomponent/server/sfa-component-server.py
new file mode 100755 (executable)
index 0000000..07661f5
--- /dev/null
+++ b/sfacomponent/server/sfa-component-server.py
@@ -0,0 +1,89 @@
+#!/usr/bin/python
+#
+### $Id: sfa-compnent-server.py 
+### $URL:
+ 
+# This wrapper implements the SFA Component Interfaces on PLC.
+#
+# There are several items that need to be done before starting the wrapper
+# server.
+#
+#   (requirements coming soon)
+##
+
+# TCP ports for the three servers
+component_port=12348
+
+import os, os.path
+from optparse import OptionParser
+
+from sfacomponent.server.component import Component
+from sfa.trust.trustedroot import TrustedRootList
+from sfa.trust.certificate import Keypair, Certificate
+from sfa.trust.hierarchy import Hierarchy
+from sfa.util.config import Config
+
+# after http://www.erlenstar.demon.co.uk/unix/faq_2.html
+def daemon():
+    """Daemonize the current process."""
+    if os.fork() != 0: os._exit(0)
+    os.setsid()
+    if os.fork() != 0: os._exit(0)
+    os.umask(0)
+    devnull = os.open(os.devnull, os.O_RDWR)
+    os.dup2(devnull, 0)
+    # xxx fixme - this is just to make sure that nothing gets stupidly lost - should use devnull
+    crashlog = os.open('/var/log/sfa.daemon', os.O_RDWR | os.O_APPEND | os.O_CREAT, 0644)
+    os.dup2(crashlog, 1)
+    os.dup2(crashlog, 2)
+
+def main():
+    # xxx get rid of globals - name consistently CamelCase or under_score
+    global AuthHierarchy
+    global TrustedRoots
+    global component_port
+
+    # Generate command line parser
+    parser = OptionParser(usage="sfa-component-server [options]")
+    parser.add_option("-v", "--verbose", dest="verbose", action="store_true", 
+         help="verbose mode", default=False)
+    parser.add_option("-d", "--daemon", dest="daemon", action="store_true",
+         help="Run as daemon.", default=False)
+    (options, args) = parser.parse_args()
+
+    hierarchy = Hierarchy()
+    path = hierarchy.basedir
+    key_file = os.path.join(path, "server.key")
+    cert_file = os.path.join(path, "server.cert")
+   
+    # XX TODO: Subject should be the node's hrn    
+    subject = "component" 
+    if (options.daemon):  daemon()
+
+    if (os.path.exists(key_file)) and (not os.path.exists(cert_file)):
+        # If private key exists and cert doesnt, recreate cert
+        key = Keypair(filename=key_file)
+        cert = Certificate(subject=subject)
+        cert.set_issuer(key=key, subject=subject)
+        cert.set_pubkey(key)
+        cert.sign()
+        cert.save_to_file(cert_file)
+
+    elif (not os.path.exists(key_file)) or (not os.path.exists(cert_file)):
+        # if no key is specified, then make one up
+        key = Keypair(create=True)
+        key.save_to_file(key_file)
+        cert = Certificate(subject=subject)
+        cert.set_issuer(key=key, subject=subject)
+        cert.set_pubkey(key)
+        cert.sign()
+        cert.save_to_file(cert_file)
+
+    AuthHierarchy = Hierarchy()
+
+    TrustedRoots = TrustedRootList(Config().get_trustedroots_dir())
+    component = Component("", component_port, key_file, cert_file)
+    component.start()
+
+if __name__ == "__main__":
+    main()