Add stop command

Author: supechicken

autostart/crew-sudo.conf

@@ -11,5 +11,5 @@ script
   # - It dropped a controlling tty (std{in,err,out} are /dev/null).
   # - It calls setsid() for every job.
   # - It forked for us.
-  exec /usr/local/bin/crew-sudo --daemon --foreground
+  exec /usr/local/bin/crew-sudo daemon --foreground
 end script

autostart/crew-sudo.sh

@@ -1,4 +1,4 @@
 if grep -q '^/sbin/frecon' < "/proc/$(ps -p $PPID -o ppid= | tr -d ' ')/cmdline"; then
   # start crew-sudo daemon if running in VT-2
-  [ -f /tmp/crew-sudo.socket ] || crew-sudo --daemon --bashrc
+  [ -f /tmp/crew-sudo.socket ] || crew-sudo daemon --bashrc
 fi

component/daemon.rb

@@ -10,14 +10,15 @@ def runas_daemon(argv)
   if File.exist?(SOCKET_PATH) && File.exist?(PID_FILE_PATH)
     if ARGV.include?('--replace')
       Process.kill('TERM', File.read(PID_FILE_PATH).to_i)
+      sleep 0.1 while File.exist?(SOCKET_PATH)
     else
       if IS_BASHRC
         warn "crew-sudo: Daemon started with PID #{File.read(PID_FILE_PATH)}"
       else
         message <<~EOT, loglevel: :error
           crew-sudo daemon (process #{File.read(PID_FILE_PATH)}) is already running.
 
-          Use `#{PROGNAME} --daemon --replace` to replace the running daemon
+          Use `#{PROGNAME} --daemon --replace` to replace the running daemon.
         EOT
       end
       exit 1

crew-sudo

@@ -9,10 +9,19 @@ $verbose = ENV['CREW_SUDO_VERBOSE'].eql?('1')
 case PROGNAME
 when 'crew-sudo'
   case ARGV[0]
-  when '-d', '--daemon'
+  when 'daemon'
     runas_daemon(ARGV[1..-1])
-  when '-c', '--client'
+  when 'client'
     runas_client(ARGV[1..-1])
+  when 'stop-daemon'
+    exit(0) unless File.exist?(PID_FILE_PATH)
+    pid = File.read(PID_FILE_PATH)
+
+    begin
+      Process.kill('TERM', pid)
+      warn "crew-sudo: Daemon with PID #{pid} stopped"
+    rescue Errno::ESRCH
+    end
   when '-h', '--help'
     warn <<~EOT
       #{File.basename($0)} multi-purpose launcher
@@ -21,9 +30,10 @@ when 'crew-sudo'
              #{PROGNAME} -h|--help
              #{PROGNAME} -V|--version
 
-      Available modes:
-        --daemon: Run as daemon mode, listen incoming requests at #{SOCKET_PATH}
-        --client: Run as client mode, pass all given command arguments to daemon
+      Available commands:
+        daemon       Run as daemon mode, listen incoming requests at #{SOCKET_PATH}
+        client       Run as client mode, pass all given command arguments to daemon
+        stop-daemon  Stop currently running crew-sudo daemon
 
     EOT
   when '-V', '--version'