/usr/share/denyhosts/denyhosts_ctl.py is in denyhosts 2.10-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | #!/usr/bin/python
# denyhosts Bring up/down the DenyHosts daemon
#
# chkconfig: 2345 98 02
# description: Activates/Deactivates the
# DenyHosts daemon to block ssh attempts
#
###############################################
###############################################
#### Edit these to suit your configuration ####
###############################################
DENYHOSTS_BIN = "/usr/sbin/denyhosts"
DENYHOSTS_LOCK = "/run/denyhosts.pid"
DENYHOSTS_CFG = "/etc/denyhosts.conf"
PYTHON_BIN = "/usr/bin/env python"
###############################################
#### Do not edit below ####
###############################################
DENYHOSTS_BIN = "%s %s" % (PYTHON_BIN, DENYHOSTS_BIN)
import os, sys, signal, time
# make sure 'ps' command is accessible (which should be
# in either /usr/bin or /bin. Modify the PATH so
# popen can find it
env = os.environ.get('PATH', "")
os.environ['PATH'] = "/usr/bin:/bin:%s" % env
STATE_NOT_RUNNING = -1
STATE_LOCK_EXISTS = -2
def usage():
print "Usage: %s {start [args...] | stop | restart [args...] | status | debug | condrestart [args...] }" % sys.argv[0]
print
print "For a list of valid 'args' refer to:"
print "$ denyhosts.py --help"
print
sys.exit(0)
def getpid():
try:
fp = open(DENYHOSTS_LOCK, "r")
pid = int(fp.readline().rstrip())
fp.close()
except Exception, e:
return STATE_NOT_RUNNING
if not sys.platform.startswith('freebsd') and os.access("/proc", os.F_OK):
# proc filesystem exists, look for pid
if os.access(os.path.join("/proc", str(pid)), os.F_OK):
return pid
else:
return STATE_LOCK_EXISTS
else:
# proc filesystem doesn't exist (or it doesn't contain PIDs), use 'ps'
p = os.popen("ps -p %d" % pid, "r")
p.readline() # get the header line
pid_running = p.readline()
# pid_running will be '' if no process is found
if pid_running:
return pid
else:
return STATE_LOCK_EXISTS
def start(*args):
cmd = "%s --daemon " % DENYHOSTS_BIN
if args: cmd += ' '.join(args)
print "starting DenyHosts: ", cmd
os.system(cmd)
def stop():
pid = getpid()
if pid >= 0:
os.kill(pid, signal.SIGTERM)
print "sent DenyHosts SIGTERM"
else:
print "DenyHosts is not running"
def debug():
pid = getpid()
if pid >= 0:
os.kill(pid, signal.SIGUSR1)
print "sent DenyHosts SIGUSR1"
else:
print "DenyHosts is not running"
def status():
pid = getpid()
if pid == STATE_LOCK_EXISTS:
print "%s exists but DenyHosts is not running" % DENYHOSTS_LOCK
elif pid == STATE_NOT_RUNNING:
print "Denyhosts is not running"
else:
print "DenyHosts is running with pid = %d" % pid
def condrestart(*args):
pid = getpid()
if pid >= 0:
restart(*args)
def restart(*args):
stop()
time.sleep(1)
start(*args)
if __name__ == '__main__':
cases = {'start': start,
'stop': stop,
'debug': debug,
'status': status,
'condrestart': condrestart,
'restart': restart}
try:
args = sys.argv[2:]
except Exception:
args = []
try:
# arg 1 should contain one of the cases above
option = sys.argv[1]
except Exception:
# try to infer context (from an /etc/init.d/ script, perhaps)
procname = os.path.basename(sys.argv[0])
infer_dict = {'K': 'stop',
'S': 'start'}
option = infer_dict.get(procname[0])
if not option:
usage()
try:
if option in ('start', 'restart', 'condrestart'):
anystartswith = lambda prefix, xs: any(map(lambda x: x.startswith(prefix), xs))
if not anystartswith('--config', args) and '-c' not in args:
args.append("--config=%s" % DENYHOSTS_CFG)
cmd = cases[option]
apply(cmd, args)
except Exception:
usage()
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