Logging failed connection attempts.

fix #362

modoboa/auth/views.py

@@ -6,6 +6,7 @@ from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext as _
 from modoboa.lib import events
 from modoboa.lib.webutils import _render_to_string
+from modoboa.lib.sysutils import log_warning
 from modoboa.admin import views as admviews
 from forms import LoginForm
 from modoboa.auth.lib import *
@@ -36,6 +37,9 @@ def dologin(request):
                     next = reverse(admviews.domains)
                 return HttpResponseRedirect(next)
             error = _("Your username and password didn't match. Please try again.")
+            log_warning(_("Failed connection attempt from %s as user %s" \
+                              % (request.META["REMOTE_ADDR"], form.cleaned_data["username"])))
+
         next = request.POST.get("next", None)
         httpcode = 401
     else:

modoboa/lib/sysutils.py

@@ -4,7 +4,8 @@
 This module extra functions/shortcuts to communicate with the system
 (executing commands, etc.)
 """
-
+import logging
+import logging.handlers
 from modoboa.lib import parameters
 
 def exec_cmd(cmd, **kwargs):
@@ -21,3 +22,16 @@ def exec_as_vuser(cmd):
         exec_cmd("echo '%s' >> /tmp/vmail.log" % output)
         return False
     return True
+
+def __log(msg, facility=logging.handlers.SysLogHandler.LOG_AUTH):
+    logger = logging.getLogger('modoboa')
+    logger.setLevel(logging.DEBUG)
+    handler = logging.handlers.SysLogHandler(address='/dev/log', facility=facility)
+    formatter = logging.Formatter('%(name)s: %(levelname)s %(message)s')
+    handler.setFormatter(formatter)
+    logger.addHandler(handler)
+    return logger
+
+def log_warning(msg):
+    logger = __log(msg)
+    logger.warning(msg)