2008-05-25 Moritz <moritz@gnu.org>

* scdaemon.c: New options: oSystemDaemon, oSystemSocket.
	(main): New local variables: is_system_daemon, system_socket, set
	variables during parsing.
	(main): Don't parse default config if oSystemDaemon is given on the commandline.
	Implemented basic "system-daemon" logic.

scd/ChangeLog

@@ -1,3 +1,11 @@
+2008-05-25  Moritz  <moritz@gnu.org>
+
+	* scdaemon.c: New options: oSystemDaemon, oSystemSocket.
+	(main): New local variables: is_system_daemon, system_socket, set
+	variables during parsing.
+	(main): Don't parse default config if oSystemDaemon is given on the commandline.
+	Implemented basic "system-daemon" logic.
+
 2008-04-21  Moritz Schulte  <mo@g10code.com>  (wk)
 
 	* app-openpgp.c (verify_a_chv): Make use of the default CHV flag.

scd/scdaemon.c

@@ -1,6 +1,6 @@
 /* scdaemon.c  -  The GnuPG Smartcard Daemon
  * Copyright (C) 2001, 2002, 2004, 2005, 
- *               2007 Free Software Foundation, Inc.
+ *               2007, 2008 Free Software Foundation, Inc.
  *
  * This file is part of GnuPG.
  *
@@ -88,7 +88,9 @@ enum cmd_and_opt_values
   oAllowAdmin,
   oDenyAdmin,
   oDisableApplication,
-  oDebugDisableTicker
+  oDebugDisableTicker,
+  oSystemDaemon,
+  oSystemSocket
 };
 
 
@@ -132,6 +134,8 @@ static ARGPARSE_OPTS opts[] = {
   { oAllowAdmin, "allow-admin", 0, N_("allow the use of admin card commands")},
   { oDenyAdmin,  "deny-admin",  0, "@" },  
   { oDisableApplication, "disable-application", 2, "@"},
+  { oSystemDaemon, "system-daemon", 0, N_("run in system daemon-mode") },
+  { oSystemSocket, "system-socket", 2, N_("|SOCKET|specify socket to use in system-daemon mode") },
 
   {0}
 };
@@ -304,6 +308,8 @@ main (int argc, char **argv )
   int pipe_server = 0;
   int multi_server = 0;
   int is_daemon = 0;
+  int is_system_daemon = 0;
+  char *system_socket = NULL;
   int nodetach = 0;
   int csh_style = 0;
   char *logfile = NULL;
@@ -390,6 +396,8 @@ main (int argc, char **argv )
           default_config = 0; /* --no-options */
 	else if (pargs.r_opt == oHomedir)
           opt.homedir = pargs.r.ret_str;
+	else if (pargs.r_opt == oSystemDaemon)
+	  default_config = 0;
     }
 
   /* initialize the secure memory. */
@@ -482,6 +490,8 @@ main (int argc, char **argv )
         case oServer: pipe_server = 1; break;
         case oMultiServer: pipe_server = 1; multi_server = 1; break;
         case oDaemon: is_daemon = 1; break;
+        case oSystemDaemon: is_daemon = is_system_daemon = 1; break;
+        case oSystemSocket: system_socket = pargs.r.ret_str; break;
 
         case oReaderPort: opt.reader_port = pargs.r.ret_str; break;
         case octapiDriver: opt.ctapi_driver = pargs.r.ret_str; break;
@@ -679,11 +689,19 @@ main (int argc, char **argv )
 #endif
 
       /* Create the socket.  */
+      if (is_system_daemon)
+	{
+	  if (system_socket)
+	    socket_name = system_socket;
+	  else
+	    socket_name = NULL; /* FIXME! */
+	}
+      else
 	socket_name = create_socket_name (standard_socket,
 					  "S.scdaemon",
 					  "/tmp/gpg-XXXXXX/S.scdaemon");
 
-      fd = FD2INT (create_server_socket (standard_socket,
+      fd = FD2INT (create_server_socket (system_socket ? 1 : standard_socket,
                                          socket_name, &socket_nonce));
 
 
@@ -701,6 +719,14 @@ main (int argc, char **argv )
           
           close (fd);
 
+	  if (is_system_daemon)
+	    {
+	      *socket_name = 0; /* don't let cleanup() remove the socket -
+				   the child should do this from now on */
+	      exit (0);
+	    }
+	  else
+	    {
 	      /* create the info string: <name>:<pid>:<protocol_version> */
 	      if (asprintf (&infostr, "SCDAEMON_INFO=%s:%lu:1",
 			    socket_name, (ulong)pid ) < 0)
@@ -741,6 +767,7 @@ main (int argc, char **argv )
 		  free (infostr);
 		  exit (0); 
 		}
+	    }
           /* NOTREACHED */
         } /* end parent */