HTTP-Server can now daemonize

[nagixsc.git] / nagixsc / __init__.py

diff --git a/nagixsc/__init__.py b/nagixsc/__init__.py
index 56c4cf3ead117ca047a818085912232a5ad514d4..327208453ff60fb001768708c698a4f67a8301f6 100644 (file)
--- a/nagixsc/__init__.py
+++ b/nagixsc/__init__.py
@@ -409,6 +409,45 @@ def encode_multipart(xmldoc, httpuser, httppasswd):
 
 ##############################################################################
 
+def daemonize(pidfile=None, stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
+       # 1st fork
+       try:
+               pid = os.fork()
+               if pid > 0:
+                       sys.exit(0)
+       except OSError, e:
+               sys.stderr.write("1st fork failed: (%d) %sn" % (e.errno, e.strerror))
+               sys.exit(1)
+       # Prepare 2nd fork
+       os.chdir("/")
+       os.umask(0)
+       os.setsid( )
+       # 2nd fork
+       try:
+               pid = os.fork()
+               if pid > 0:
+                       sys.exit(0)
+       except OSError, e:
+               sys.stderr.write("2nd fork failed: (%d) %sn" % (e.errno, e.strerror))
+               sys.exit(1)
+       # Redirect stdin, stdout, stderr
+       sys.stdout.flush()
+       sys.stderr.flush()
+       si = file(stdin, 'r')
+       so = file(stdout, 'a+')
+       se = file(stderr, 'a+', 0)
+       os.dup2(si.fileno(), sys.stdin.fileno())
+       os.dup2(so.fileno(), sys.stdout.fileno())
+       os.dup2(se.fileno(), sys.stderr.fileno())
+
+       if pidfile:
+               pid = str(os.getpid())
+               file(pidfile, 'w+').write('%s\n' % pid)
+
+       return
+
+##############################################################################
+
 class MyHTTPServer(BaseHTTPServer.HTTPServer):
        def __init__(self, server_address, HandlerClass, ssl=False, sslpemfile=None):
                if ssl: