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authorArturo Filastò <hellais@torproject.org>2011-08-23 01:33:13 +0200
committerArturo Filastò <hellais@torproject.org>2011-08-23 01:33:13 +0200
commit2e645039c2ea7a7e0684e46799db2a901a5d3cae (patch)
treea7e064df1a857f1cf9c94d333ba42862eeffa39f
parentfb4546cfd1ab55341508271faeb556bab9c39f14 (diff)
downloadtorouter-2e645039c2ea7a7e0684e46799db2a901a5d3cae.zip
torouter-2e645039c2ea7a7e0684e46799db2a901a5d3cae.tar.gz
Fix #3790 Add a daemon class and make tor web ui run as such.
-rw-r--r--packages/torouter-web/src/daemon.py129
-rw-r--r--packages/torouter-web/src/runui.py63
2 files changed, 173 insertions, 19 deletions
diff --git a/packages/torouter-web/src/daemon.py b/packages/torouter-web/src/daemon.py
new file mode 100644
index 0000000..4ccc15c
--- /dev/null
+++ b/packages/torouter-web/src/daemon.py
@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+
+import sys, os, time, atexit
+from signal import SIGTERM
+
+class Daemon:
+ """
+ A generic daemon class.
+
+ Usage: subclass the Daemon class and override the run() method
+ """
+ def __init__(self, pidfile, stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
+ self.stdin = stdin
+ self.stdout = stdout
+ self.stderr = stderr
+ self.pidfile = pidfile
+
+ def daemonize(self):
+ """
+ do the UNIX double-fork magic, see Stevens' "Advanced
+ Programming in the UNIX Environment" for details (ISBN 0201563177)
+ http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
+ """
+ try:
+ pid = os.fork()
+ if pid > 0:
+ # exit first parent
+ sys.exit(0)
+ except OSError, e:
+ sys.stderr.write("fork #1 failed: %d (%s)\n" % (e.errno, e.strerror))
+ sys.exit(1)
+
+ # decouple from parent environment
+ #os.chdir("/")
+ os.setsid()
+ os.umask(0)
+
+ # do second fork
+ try:
+ pid = os.fork()
+ if pid > 0:
+ # exit from second parent
+ sys.exit(0)
+ except OSError, e:
+ sys.stderr.write("fork #2 failed: %d (%s)\n" % (e.errno, e.strerror))
+ sys.exit(1)
+
+ # redirect standard file descriptors
+ sys.stdout.flush()
+ sys.stderr.flush()
+ si = file(self.stdin, 'r')
+ so = file(self.stdout, 'a+')
+ se = file(self.stderr, 'a+', 0)
+ os.dup2(si.fileno(), sys.stdin.fileno())
+ os.dup2(so.fileno(), sys.stdout.fileno())
+ os.dup2(se.fileno(), sys.stderr.fileno())
+
+ # write pidfile
+ atexit.register(self.delpid)
+ pid = str(os.getpid())
+ file(self.pidfile,'w+').write("%s\n" % pid)
+
+ def delpid(self):
+ os.remove(self.pidfile)
+
+ def start(self):
+ """
+ Start the daemon
+ """
+ # Check for a pidfile to see if the daemon already runs
+ try:
+ pf = file(self.pidfile,'r')
+ pid = int(pf.read().strip())
+ pf.close()
+ except IOError:
+ pid = None
+
+ if pid:
+ message = "pidfile %s already exist. Daemon already running?\n"
+ sys.stderr.write(message % self.pidfile)
+ sys.exit(1)
+
+ # Start the daemon
+ self.daemonize()
+ self.run()
+
+ def stop(self):
+ """
+ Stop the daemon
+ """
+ # Get the pid from the pidfile
+ try:
+ pf = file(self.pidfile,'r')
+ pid = int(pf.read().strip())
+ pf.close()
+ except IOError:
+ pid = None
+
+ if not pid:
+ message = "pidfile %s does not exist. Daemon not running?\n"
+ sys.stderr.write(message % self.pidfile)
+ return # not an error in a restart
+
+ # Try killing the daemon process
+ try:
+ while 1:
+ os.kill(pid, SIGTERM)
+ time.sleep(0.1)
+ except OSError, err:
+ err = str(err)
+ if err.find("No such process") > 0:
+ if os.path.exists(self.pidfile):
+ os.remove(self.pidfile)
+ else:
+ print str(err)
+ sys.exit(1)
+
+ def restart(self):
+ """
+ Restart the daemon
+ """
+ self.stop()
+ self.start()
+
+ def run(self):
+ """
+ You should override this method when you subclass Daemon. It will be called after the process has been
+ daemonized by start() or restart().
+ """
diff --git a/packages/torouter-web/src/runui.py b/packages/torouter-web/src/runui.py
index d5c7c9e..488c483 100644
--- a/packages/torouter-web/src/runui.py
+++ b/packages/torouter-web/src/runui.py
@@ -3,6 +3,8 @@
# by Arturo Filasto' <hellais@torproject.org>
#
+import sys, time, os
+from daemon import Daemon
import web
from tui import config
import tui.controllers
@@ -10,27 +12,50 @@ import tui.controllers
from tui.utils import session
from tui.view import render
-
# This is the main structure of URLs
urls = (
- '/', 'tui.controllers.main.index',
-# '/config/(tor|router)', 'tui.controllers.main.config',
- '/network', 'tui.controllers.network.main',
- '/network/firewall', 'tui.controllers.network.firewall',
- '/network/wireless', 'tui.controllers.network.wireless',
- '/network/wired', 'tui.controllers.network.wired',
- '/network/status', 'tui.controllers.network.status',
- '/tor', 'tui.controllers.tor.status',
- '/tor/config', 'tui.controllers.tor.torrc',
- '/logout', 'tui.controllers.main.logout'
- )
-# '/wizard/([0-9a-f]{1,2})?', 'tui.controllers.wizard.step',
-# '/status', 'tui.controllers.status')
+ '/', 'tui.controllers.main.index',
+# '/config/(tor|router)', 'tui.controllers.main.config',
+ '/network', 'tui.controllers.network.main',
+ '/network/firewall', 'tui.controllers.network.firewall',
+ '/network/wireless', 'tui.controllers.network.wireless',
+ '/network/wired', 'tui.controllers.network.wired',
+ '/network/status', 'tui.controllers.network.status',
+ '/tor', 'tui.controllers.tor.status',
+ '/tor/config', 'tui.controllers.tor.torrc',
+ '/logout', 'tui.controllers.main.logout'
+ )
+# '/wizard/([0-9a-f]{1,2})?', 'tui.controllers.wizard.step',
+# '/status', 'tui.controllers.status')
+
+app = web.application(urls, globals())
+# add session management to the app
+session.add_session_to_app(app)
+app.internalerror = web.debugerror
+class TorWebDaemon(Daemon):
+ def run(self):
+ app.run()
+
+DEBUG = False
if __name__ == "__main__":
- app = web.application(urls, globals())
- # Add session management to the app
- session.add_session_to_app(app)
- app.internalerror = web.debugerror
- app.run()
+ if DEBUG:
+ app.run()
+ service = TorWebDaemon(os.path.join(os.getcwd(),'tui.pid'))
+ if len(sys.argv) == 2:
+ if 'start' == sys.argv[1]:
+ sys.argv[1] = '8080'
+ service.start()
+ elif 'stop' == sys.argv[1]:
+ service.stop()
+ elif 'restart' == sys.argv[1]:
+ service.restart()
+ else:
+ print "Unknown command"
+ sys.exit(2)
+ sys.exit(0)
+ else:
+ print "usage: %s start|stop|restart" % sys.argv[0]
+ sys.exit(2)
+