switched to svn directory structure

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diff --git a/AUTHORS b/AUTHORS
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--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+Christian Pointner <equinox@helsinki.at>
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..9e88ab1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,694 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+
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+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..eb5f1a5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,72 @@
+##
+##  rhctl
+##
+##  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+##
+##  This file is part of rhctl.
+##
+##  rhctl is free software: you can redistribute it and/or modify
+##  it under the terms of the GNU General Public License as published by
+##  the Free Software Foundation, either version 3 of the License, or
+##  any later version.
+##
+##  rhctl is distributed in the hope that it will be useful,
+##  but WITHOUT ANY WARRANTY; without even the implied warranty of
+##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+##  GNU General Public License for more details.
+##
+##  You should have received a copy of the GNU General Public License
+##  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+##
+
+ifneq ($(MAKECMDGOALS),distclean)
+include include.mk
+endif
+
+EXECUTABLE := switchctl
+
+OBJ := log.o \
+      sig_handler.o \
+      options.o \
+      string_list.o \
+      key_value_storage.o \
+      command_queue.o \
+      client_list.o \
+      utils.o \
+      switchctl.o
+
+
+SRC := $(OBJ:%.o=%.c)
+
+.PHONY: clean distclean
+
+all: $(EXECUTABLE)
+
+%.d: %.c
+	@set -e; rm -f $@; \
+	 $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
+   sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+   rm -f $@.$$$$; echo '(re)building $@'
+
+ifneq ($(MAKECMDGOALS),distclean)
+-include $(SRC:%.c=%.d)
+endif
+
+$(EXECUTABLE): $(OBJ)
+	$(CC) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c $<
+
+
+distclean: clean
+	find . -name *.o -exec rm -f {} \;
+	find . -name "*.\~*" -exec rm -rf {} \;
+	rm -f include.mk
+
+clean:
+	rm -f *.o
+	rm -f *.d
+	rm -f *.d.*
+	rm -f $(EXECUTABLE)
+
diff --git a/client_list.c b/client_list.c
new file mode 100644
index 0000000..6d2f838
--- /dev/null
+++ b/client_list.c
@@ -0,0 +1,117 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+
+#include "client_list.h"
+#include "datatypes.h"
+
+client_t* client_get_last(client_t* first)
+{
+  if(!first) 
+    return NULL;
+
+  while(first->next) {
+    first = first->next;
+  }
+
+  return first;
+}
+
+int client_add(client_t** first, int fd)
+{
+  if(!first)
+    return -1;
+
+  client_t* new_client = malloc(sizeof(client_t));
+  if(!new_client)
+    return -2;
+
+  new_client->fd = fd;
+  new_client->status_listener = 0;
+  new_client->error_listener = 0;
+  new_client->request_listener = 0;
+  new_client->next = NULL;
+  new_client->buffer.offset = 0;
+
+  if(!(*first)) {
+    *first = new_client;
+    return 0;
+  }
+    
+  client_get_last(*first)->next = new_client;
+
+  return 0;
+}
+
+void client_remove(client_t** first, int fd)
+{
+  if(!first || !(*first)) 
+    return;
+
+  client_t* deletee = *first;
+  if((*first)->fd == fd) {
+    *first = (*first)->next;
+    close(deletee->fd);
+    free(deletee);
+    return;
+  }
+
+  client_t* prev = deletee;
+  deletee = deletee->next;
+  while(deletee) {
+    if(deletee->fd == fd) {
+      prev->next = deletee->next;
+      close(deletee->fd);
+      free(deletee);
+      return;
+    }
+    prev = deletee;
+    deletee = deletee->next;
+  }
+}
+
+client_t* client_find(client_t* first, int fd)
+{
+  if(!first)
+    return NULL;
+  
+  while(first) {
+    if(first->fd == fd)
+      return first;
+
+    first = first->next;
+  }
+  return NULL;
+}
+
+void client_clear(client_t** first)
+{
+  if(!first || !(*first)) 
+    return;
+
+  while(*first) {
+    client_t* deletee = *first;
+    *first = (*first)->next;
+    close(deletee->fd);
+    free(deletee);
+  }
+}
diff --git a/client_list.h b/client_list.h
new file mode 100644
index 0000000..c12d2b8
--- /dev/null
+++ b/client_list.h
@@ -0,0 +1,42 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _CLIENT_LIST_H_
+#define _CLIENT_LIST_H_
+
+#include "datatypes.h"
+
+struct client_struct {
+  int fd;
+  int status_listener;
+  int error_listener;
+  int request_listener;
+  struct client_struct* next;
+  read_buffer_t buffer;
+};
+typedef struct client_struct client_t;
+
+int client_add(client_t** first, int fd);
+void client_remove(client_t** first, int fd);
+client_t* client_find(client_t* first, int fd);
+void client_clear(client_t** first);
+
+#endif
diff --git a/command_queue.c b/command_queue.c
new file mode 100644
index 0000000..0351f5c
--- /dev/null
+++ b/command_queue.c
@@ -0,0 +1,118 @@
+/*
+ *  door_daemon
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of door_daemon.
+ *
+ *  door_daemon is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  door_daemon is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with door_daemon. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "command_queue.h"
+#include "datatypes.h"
+
+cmd_t* cmd_get_last(cmd_t* first)
+{
+  if(!first) 
+    return NULL;
+
+  while(first->next) {
+    first = first->next;
+  }
+
+  return first;
+}
+
+int cmd_push(cmd_t** first, int fd, cmd_id_t cmd, const char* param)
+{
+  if(!first)
+    return -1;
+
+  cmd_t* new_cmd = malloc(sizeof(cmd_t));
+  if(!new_cmd)
+    return -2;
+
+  new_cmd->fd = fd;
+  new_cmd->cmd = cmd;
+  if(param) {
+    new_cmd->param = strdup(param);
+    if(!new_cmd->param) {
+      free(new_cmd);
+      return -2;
+    }
+  }
+  else
+    new_cmd->param = NULL;
+  new_cmd->sent = 0;
+  new_cmd->tv_start.tv_sec = 0;
+  new_cmd->tv_start.tv_usec = 0;
+  new_cmd->next = NULL;
+
+  if(!(*first)) {
+    *first = new_cmd;
+    return 0;
+  }
+    
+  cmd_get_last(*first)->next = new_cmd;
+
+  return 0;
+}
+
+void cmd_sent(cmd_t* cmd)
+{
+  if(!cmd)
+    return;
+
+  cmd->sent = 1;
+  gettimeofday(&cmd->tv_start, NULL);
+}
+
+int cmd_has_expired(cmd_t cmd)
+{
+  struct timeval now;
+  timerclear(&now);
+  gettimeofday(&now, NULL);
+  cmd.tv_start.tv_sec++;
+
+  return timercmp(&cmd.tv_start, &now, <);
+}
+
+void cmd_pop(cmd_t** first)
+{
+  if(!first || !(*first)) 
+    return;
+
+  cmd_t* deletee = *first;
+  *first = (*first)->next;
+  if(deletee->param)
+    free(deletee->param);
+  free(deletee);
+}
+
+void cmd_clear(cmd_t** first)
+{
+  if(!first || !(*first)) 
+    return;
+
+  while(*first) {
+    cmd_t* deletee = *first;
+    *first = (*first)->next;
+    if(deletee->param)
+      free(deletee->param);
+    free(deletee);
+  }
+}
diff --git a/command_queue.h b/command_queue.h
new file mode 100644
index 0000000..a97462f
--- /dev/null
+++ b/command_queue.h
@@ -0,0 +1,46 @@
+/*
+ *  door_daemon
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of door_daemon.
+ *
+ *  door_daemon is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  door_daemon is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with door_daemon. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _COMMAND_QUEUE_H_
+#define _COMMAND_QUEUE_H_
+
+#include <sys/time.h>
+
+enum cmd_id_enum { SWITCH, STATUS, LOG, LISTEN };
+typedef enum cmd_id_enum cmd_id_t;
+
+struct cmd_struct {
+  int fd;
+  cmd_id_t cmd;
+  char* param;
+  int sent;
+  struct timeval tv_start;
+  struct cmd_struct* next;
+};
+typedef struct cmd_struct cmd_t;
+
+int cmd_push(cmd_t** first, int fd, cmd_id_t cmd, const char* param);
+void cmd_sent(cmd_t* cmd);
+int cmd_has_expired(cmd_t cmd);
+void cmd_pop(cmd_t** first);
+void cmd_clear(cmd_t** first);
+
+#endif
diff --git a/configure b/configure
new file mode 100755
index 0000000..dca28c8
--- /dev/null
+++ b/configure
@@ -0,0 +1,107 @@
+#!/bin/sh
+#
+#
+#  rhctl
+#
+#  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+#
+#  This file is part of rhctl.
+#
+#  rhctl is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  any later version.
+#
+#  rhctl is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+#
+
+TARGET=`uname -s`
+
+CFLAGS='-g -O2'
+LDFLAGS='-g -Wall -O2'
+
+PREFIX='/usr/local'
+USERNAME='rhctl'
+USERHOME='/var/run/rhctl'
+
+print_usage() {
+  echo "configure --help                    print this"
+  echo "          --target=<TARGET>         build target i.e. Linux (default: autodetect)"
+  echo "          --prefix=<PREFIX>         the installation prefix (default: /usr/local)"
+  echo "          --username=<USERNAME>     create this user when installing (default: rhctl)"
+  echo "          --userhome=<PATH>         the home directory of the user to be created  (default: /var/run/rhctl)"
+}
+
+for arg
+do
+  case $arg in
+  --target=*)
+    TARGET=${arg#--target=}
+  ;;
+  --prefix=*)
+    PREFIX=${arg#--prefix=}
+  ;;
+  --username=*)
+    USERNAME=${arg#--username=}
+  ;;
+  --userhome=*)
+    USERHOME=${arg#--userhome=}
+  ;;
+  --help)
+    print_usage
+    exit 0
+  ;;
+  *)
+    echo "Unknown argument: $arg"
+    print_usage
+    exit 1
+  ;;
+  esac
+done
+
+rm -f include.mk
+case $TARGET in 
+  Linux)
+    echo "Linux specific build options"
+  ;;
+  OpenBSD|FreeBSD|NetBSD)
+    echo "BSD specific build options"
+    CFLAGS=$CFLAGS' -I/usr/local/include'
+    LDFLAGS=$LDFLAGS' -L/usr/local/lib'
+  ;;
+  *)
+    echo "Plattform not supported"
+    exit 1;
+  ;;
+esac
+
+if [ "x$PREFIX" = "x/usr" ]; then
+ ETCDIR=/etc
+else
+ ETCDIR=$PREFIX/etc
+fi
+
+cat >> include.mk <<EOF
+# this file was created automatically
+# do not edit this file directly 
+# use ./configure instead
+
+TARGET := $TARGET
+CC := gcc
+CFLAGS := $CFLAGS
+LDFLAGS := $LDFLAGS
+
+SBINDIR := $PREFIX/sbin
+MANDIR := $PREFIX/share/man
+ETCDIR := $ETCDIR
+USERNAME := $USERNAME
+USERHOME := $USERHOME
+EOF
+
+exit 0
diff --git a/daemon.h b/daemon.h
new file mode 100644
index 0000000..afe1a27
--- /dev/null
+++ b/daemon.h
@@ -0,0 +1,173 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DAEMON_H_
+#define _DAEMON_H_
+
+#include <poll.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+struct priv_info_struct {
+  struct passwd* pw_;
+  struct group* gr_;
+};
+typedef struct priv_info_struct priv_info_t;
+
+int priv_init(priv_info_t* priv, const char* username, const char* groupname)
+{
+  if(!priv)
+    return -1;
+
+  priv->pw_ = NULL;
+  priv->gr_ = NULL;
+
+  priv->pw_ = getpwnam(username);
+  if(!priv->pw_) {
+    log_printf(ERROR, "unkown user %s", username);
+    return -1;
+  }
+
+  if(groupname)
+    priv->gr_ = getgrnam(groupname);
+  else
+    priv->gr_ = getgrgid(priv->pw_->pw_gid);
+
+  if(!priv->gr_) {
+    log_printf(ERROR, "unkown group %s", groupname);
+    return -1;
+  }
+
+  return 0;
+}
+
+int priv_drop(priv_info_t* priv)
+{
+  if(!priv || !priv->pw_ || !priv->gr_) {
+    log_printf(ERROR, "privileges not initialized properly");
+    return -1;
+  }
+
+  if(setgid(priv->gr_->gr_gid))  {
+    log_printf(ERROR, "setgid('%s') failed: %s", priv->gr_->gr_name, strerror(errno));
+    return -1;
+  }
+
+  gid_t gr_list[1];
+  gr_list[0] = priv->gr_->gr_gid;
+  if(setgroups (1, gr_list)) {
+    log_printf(ERROR, "setgroups(['%s']) failed: %s", priv->gr_->gr_name, strerror(errno));
+    return -1;
+  }
+
+  if(setuid(priv->pw_->pw_uid)) {
+    log_printf(ERROR, "setuid('%s') failed: %s", priv->pw_->pw_name, strerror(errno));
+    return -1;
+  }
+
+  log_printf(NOTICE, "dropped privileges to %s:%s", priv->pw_->pw_name, priv->gr_->gr_name);
+  return 0;
+}
+
+
+int do_chroot(const char* chrootdir)
+{
+  if(getuid() != 0) {
+    log_printf(ERROR, "this programm has to be run as root in order to run in a chroot");
+    return -1;
+  }
+
+  if(chroot(chrootdir)) {
+    log_printf(ERROR, "can't chroot to %s: %s", chrootdir, strerror(errno));
+    return -1;
+  }
+  log_printf(NOTICE, "we are in chroot jail (%s) now", chrootdir);
+  if(chdir("/")) {
+    log_printf(ERROR, "can't change to /: %s", strerror(errno));
+    return -1;
+  }
+}
+
+void daemonize()
+{
+  pid_t pid;
+
+  pid = fork();
+  if(pid < 0) {
+    log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno));
+    exit(-1);
+  }
+  if(pid) exit(0);
+
+  umask(0);
+
+  if(setsid() < 0) {
+    log_printf(ERROR, "daemonizing failed at setsid(): %s, exitting", strerror(errno));
+    exit(-1);
+  }
+
+  pid = fork();
+  if(pid < 0) {
+    log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno));
+    exit(-1);
+  }
+  if(pid) exit(0);
+
+  if ((chdir("/")) < 0) {
+    log_printf(ERROR, "daemonizing failed at chdir(): %s, exitting", strerror(errno));
+    exit(-1);
+  }
+
+  int fd;
+  for (fd=0;fd<=2;fd++) // close all file descriptors
+    close(fd);
+  fd = open("/dev/null",O_RDWR);        // stdin
+  if(fd == -1)
+    log_printf(WARNING, "can't open stdin (chroot and no link to /dev/null?)");
+  else {
+    if(dup(fd) == -1)   // stdout
+      log_printf(WARNING, "can't open stdout");
+    if(dup(fd) == -1)   // stderr
+      log_printf(WARNING, "can't open stderr");
+  }
+  umask(027);
+}
+
+#endif
+
diff --git a/datatypes.h b/datatypes.h
new file mode 100644
index 0000000..cb8ed44
--- /dev/null
+++ b/datatypes.h
@@ -0,0 +1,49 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DATATYPES_H_
+#define _DATATYPES_H_
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+typedef uint8_t u_int8_t;
+typedef uint16_t u_int16_t;
+typedef uint32_t u_int32_t;
+typedef uint64_t u_int64_t;
+/* typedef int8_t int8_t; */
+/* typedef int16_t int16_t; */
+/* typedef int32_t int32_t; */
+/* typedef int64_t int64_t; */
+
+struct buffer_struct {
+  u_int32_t length_;
+  u_int8_t* buf_;
+};
+typedef struct buffer_struct buffer_t;
+
+struct read_buffer_struct {
+  u_int32_t offset;
+  u_int8_t buf[100];
+};
+typedef struct read_buffer_struct read_buffer_t;
+
+#endif
diff --git a/key_value_storage.c b/key_value_storage.c
new file mode 100644
index 0000000..8ed21dd
--- /dev/null
+++ b/key_value_storage.c
@@ -0,0 +1,92 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "key_value_storage.h"
+
+void key_value_storage_init(key_value_storage_t* stor)
+{
+  if(!stor)
+    return;
+
+  string_list_init(&(stor->keys_));
+  string_list_init(&(stor->values_));
+}
+
+void key_value_storage_clear(key_value_storage_t* stor)
+{
+  if(!stor)
+    return;
+
+  string_list_clear(&(stor->keys_));
+  string_list_clear(&(stor->values_));
+}
+
+int key_value_storage_add(key_value_storage_t* stor, const char* key, const char* value)
+{
+  if(!stor || !key || !value)
+    return -1;
+
+  int ret = string_list_add(&(stor->keys_), key);
+  if(ret!=0) 
+    return ret;
+
+  ret = string_list_add(&(stor->values_), value);
+  if(ret!=0) 
+    return ret;
+
+  return 0;
+}
+
+char* key_value_storage_find(key_value_storage_t* stor, const char* key)
+{
+  if(!stor || !key)
+    return NULL;
+
+  string_list_element_t* k = stor->keys_.first_;
+  string_list_element_t* v = stor->values_.first_;
+  while(v && k) {
+    if(!strcmp(k->string_, key))
+      return v->string_;
+    
+    k = k->next_;
+    v = v->next_;
+  }
+
+  return NULL;
+}
+
+void key_value_storage_print(key_value_storage_t* stor)
+{
+  if(!stor)
+    return;
+
+  string_list_element_t* k = stor->keys_.first_;
+  string_list_element_t* v = stor->values_.first_;
+  while(v && k) {
+    printf("'%s' -> '%s'\n", k->string_, v->string_);
+    k = k->next_;
+    v = v->next_;
+  }
+  printf("\n");
+}
diff --git a/key_value_storage.h b/key_value_storage.h
new file mode 100644
index 0000000..b62a1d5
--- /dev/null
+++ b/key_value_storage.h
@@ -0,0 +1,41 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _KEY_VALUE_STORAGE_H_
+#define _KEY_VALUE_STORAGE_H_
+
+#include "string_list.h"
+
+struct key_value_storage_struct {
+  string_list_t keys_;
+  string_list_t values_;
+};
+typedef struct key_value_storage_struct key_value_storage_t;
+
+void key_value_storage_init(key_value_storage_t* stor);
+void key_value_storage_clear(key_value_storage_t* stor);
+int key_value_storage_add(key_value_storage_t* stor, const char* key, const char* value);
+char* key_value_storage_find(key_value_storage_t* stor, const char* key);
+
+void key_value_storage_print(key_value_storage_t* stor);
+
+
+#endif
diff --git a/log.c b/log.c
new file mode 100644
index 0000000..43a0a5a
--- /dev/null
+++ b/log.c
@@ -0,0 +1,259 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define SYSLOG_NAMES
+#include <syslog.h>
+
+#include "log.h"
+
+log_t stdlog;
+
+#include "log_targets.h"
+
+const char* log_prio_to_string(log_prio_t prio)
+{
+  switch(prio) {
+  case ERROR: return "ERROR";
+  case WARNING: return "WARNING";
+  case NOTICE: return "NOTICE";
+  case INFO: return "INFO";
+  case DEBUG: return "DEBUG";
+  }
+  return "UNKNOWN";
+}
+
+log_target_type_t log_target_parse_type(const char* conf)
+{
+  if(!conf)
+    return TARGET_UNKNOWN;
+
+  if(!strncmp(conf, "syslog", 6)) return TARGET_SYSLOG;
+  if(!strncmp(conf, "file", 4)) return TARGET_FILE;
+  if(!strncmp(conf, "stdout", 6)) return TARGET_STDOUT;
+  if(!strncmp(conf, "stderr", 6)) return TARGET_STDERR;
+
+  return TARGET_UNKNOWN;
+}
+
+int log_targets_target_exists(log_targets_t* targets, log_target_type_t type)
+{
+  if(!targets && !targets->first_)
+    return 0;
+
+  log_target_t* tmp = targets->first_;
+  while(tmp) {
+    if(tmp->type_ == type)
+      return 1;
+    tmp = tmp->next_;
+  }  
+  return 0;
+}
+
+int log_targets_add(log_targets_t* targets, const char* conf)
+{
+  if(!targets)
+    return -1;
+
+  log_target_t* new_target = NULL;
+  int duplicates_allowed = 0;
+  switch(log_target_parse_type(conf)) {
+  case TARGET_SYSLOG: new_target = log_target_syslog_new(); break;
+  case TARGET_FILE: new_target = log_target_file_new(); duplicates_allowed = 1; break;
+  case TARGET_STDOUT: new_target = log_target_stdout_new(); break;
+  case TARGET_STDERR: new_target = log_target_stderr_new(); break;
+  default: return -3;
+  }
+  if(!new_target)
+    return -2;
+
+  if(!duplicates_allowed && log_targets_target_exists(targets, new_target->type_)) {
+    free(new_target);
+    return -4;
+  }
+
+  const char* prioptr = strchr(conf, ':');
+  if(!prioptr || prioptr[1] == 0) {
+    free(new_target);
+    return -1;
+  }
+  prioptr++;
+  if(!isdigit(prioptr[0]) || (prioptr[1] != 0 && prioptr[1] != ',')) {
+    free(new_target);
+    return -1;
+  }
+  new_target->max_prio_ = prioptr[0] - '0';
+  if(new_target->max_prio_ > 0)
+    new_target->enabled_ = 1;
+
+  if(new_target->init != NULL) {
+    const char* confptr = NULL;
+    if(prioptr[1] != 0)
+      confptr = prioptr+2;
+
+    int ret = (*new_target->init)(new_target, confptr);
+    if(ret) {
+      free(new_target);
+      return ret;
+    }
+  }
+
+  if(new_target->open != NULL)
+    (*new_target->open)(new_target);
+
+
+  if(!targets->first_) {
+    targets->first_ = new_target;
+  }
+  else {
+    log_target_t* tmp = targets->first_;
+    while(tmp->next_)
+      tmp = tmp->next_;
+    
+    tmp->next_ = new_target;
+  }
+  return 0;
+}
+
+void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg)
+{
+  if(!targets)
+    return;
+
+  log_target_t* tmp = targets->first_;
+  while(tmp) {
+    if(tmp->log != NULL && tmp->enabled_ && tmp->max_prio_ >= prio)
+      (*tmp->log)(tmp, prio, msg);
+
+    tmp = tmp->next_;
+  }
+}
+
+void log_targets_clear(log_targets_t* targets)
+{
+  if(!targets)
+    return;
+
+  while(targets->first_) {
+    log_target_t* tmp = targets->first_;
+    targets->first_ = tmp->next_;
+    if(tmp->close != NULL)
+      (*tmp->close)(tmp);
+    if(tmp->clear != NULL)
+      (*tmp->clear)(tmp);
+    free(tmp);
+  }
+}
+
+
+void log_init()
+{
+  stdlog.max_prio_ = 0;
+  stdlog.targets_.first_ = NULL;
+}
+
+void log_close()
+{
+  log_targets_clear(&stdlog.targets_);
+}
+
+void update_max_prio()
+{
+  log_target_t* tmp = stdlog.targets_.first_;
+  while(tmp) {
+    if(tmp->enabled_ && tmp->max_prio_ > stdlog.max_prio_)
+      stdlog.max_prio_ = tmp->max_prio_;
+
+    tmp = tmp->next_;
+  }
+}
+
+int log_add_target(const char* conf)
+{
+  if(!conf)
+    return -1;
+
+  int ret = log_targets_add(&stdlog.targets_, conf);
+  if(!ret) update_max_prio();
+  return ret;
+}
+
+void log_printf(log_prio_t prio, const char* fmt, ...)
+{
+  if(stdlog.max_prio_ < prio)
+    return;
+
+  static char msg[MSG_LENGTH_MAX];
+  va_list args;
+
+  va_start(args, fmt);
+  vsnprintf(msg, MSG_LENGTH_MAX, fmt, args);
+  va_end(args);
+
+  log_targets_log(&stdlog.targets_, prio, msg);
+}
+
+void log_print_hex_dump(log_prio_t prio, const u_int8_t* buf, u_int32_t len)
+{
+  if(stdlog.max_prio_ < prio)
+    return;
+
+  static char msg[MSG_LENGTH_MAX];
+
+  if(!buf) {
+    snprintf(msg, MSG_LENGTH_MAX, "(NULL)");
+  }
+  else {
+    u_int32_t i;
+    int offset = snprintf(msg, MSG_LENGTH_MAX, "dump(%d): ", len);
+    if(offset < 0)
+      return;
+    u_int8_t* ptr = &msg[offset];
+    
+    for(i=0; i < len; i++) {
+      if(((i+1)*3) >= (MSG_LENGTH_MAX - offset))
+        break;
+      snprintf(ptr, 3, "%02X ", buf[i]);
+      ptr+=3;
+    }
+  }
+  log_targets_log(&stdlog.targets_, prio, msg);
+}
diff --git a/log.h b/log.h
new file mode 100644
index 0000000..fc97549
--- /dev/null
+++ b/log.h
@@ -0,0 +1,90 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LOG_H_
+#define _LOG_H_
+
+#define MSG_LENGTH_MAX 150
+
+enum log_prio_enum { ERROR = 1, WARNING = 2, NOTICE = 3,
+                     INFO = 4, DEBUG = 5 };
+typedef enum log_prio_enum log_prio_t;
+
+const char* log_prio_to_string(log_prio_t prio);
+
+enum log_target_type_enum { TARGET_SYSLOG , TARGET_STDOUT, TARGET_STDERR, TARGET_FILE , TARGET_UNKNOWN };
+typedef enum log_target_type_enum log_target_type_t;
+
+struct log_target_struct {
+  log_target_type_t type_;
+  int (*init)(struct log_target_struct* self, const char* conf);
+  void (*open)(struct log_target_struct* self);
+  void (*log)(struct log_target_struct* self, log_prio_t prio, const char* msg);
+  void (*close)(struct log_target_struct* self);
+  void (*clear)(struct log_target_struct* self);
+  int opened_;
+  int enabled_;
+  log_prio_t max_prio_;
+  void* param_;
+  struct log_target_struct* next_;
+};
+typedef struct log_target_struct log_target_t;
+
+
+struct log_targets_struct {
+  log_target_t* first_;
+};
+typedef struct log_targets_struct log_targets_t;
+
+int log_targets_target_exists(log_targets_t* targets, log_target_type_t type);
+int log_targets_add(log_targets_t* targets, const char* conf);
+void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg);
+void log_targets_clear(log_targets_t* targets);
+
+
+struct log_struct {
+  log_prio_t max_prio_;
+  log_targets_t targets_;
+};
+typedef struct log_struct log_t;
+
+void log_init();
+void log_close();
+void update_max_prio();
+int log_add_target(const char* conf);
+void log_printf(log_prio_t prio, const char* fmt, ...);
+void log_print_hex_dump(log_prio_t prio, const u_int8_t* buf, u_int32_t len);
+
+#endif
diff --git a/log_targets.h b/log_targets.h
new file mode 100644
index 0000000..ca2d762
--- /dev/null
+++ b/log_targets.h
@@ -0,0 +1,358 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <time.h>
+
+static char* get_time_formatted()
+{
+  char* time_string;
+  time_t t = time(NULL);
+  if(t < 0) 
+    time_string = "<time read error>";
+  else {
+    time_string = ctime(&t);
+    if(!time_string)
+      time_string = "<time format error>";
+    else {
+      char* newline = strchr(time_string, '\n');
+      if(newline)
+        newline[0] = 0;
+    }
+  }
+  return time_string;
+}
+
+enum syslog_facility_enum { USER = LOG_USER, MAIL = LOG_MAIL,
+                            DAEMON = LOG_DAEMON, AUTH = LOG_AUTH,
+                            SYSLOG = LOG_SYSLOG, LPR = LOG_LPR,
+                            NEWS = LOG_NEWS, UUCP = LOG_UUCP,
+                            CRON = LOG_CRON, AUTHPRIV = LOG_AUTHPRIV,
+                            FTP = LOG_FTP, LOCAL0 = LOG_LOCAL0,
+                            LOCAL1 = LOG_LOCAL1, LOCAL2 = LOG_LOCAL2,
+                            LOCAL3 = LOG_LOCAL3, LOCAL4 = LOG_LOCAL4,
+                            LOCAL5 = LOG_LOCAL5, LOCAL6 = LOG_LOCAL6,
+                            LOCAL7 = LOG_LOCAL7 };
+typedef enum syslog_facility_enum syslog_facility_t;
+
+struct log_target_syslog_param_struct {
+  char* logname_;
+  syslog_facility_t facility_;
+};
+typedef struct log_target_syslog_param_struct log_target_syslog_param_t;
+
+int log_target_syslog_init(log_target_t* self, const char* conf)
+{
+  if(!self || (conf && conf[0] == 0))
+    return -1;
+  
+  self->param_ = malloc(sizeof(log_target_syslog_param_t));
+  if(!self->param_)
+    return -2;
+
+  char* logname;
+  const char* end = NULL;
+  if(!conf)
+    logname = strdup("uanytun");
+  else {
+    end = strchr(conf, ',');
+    if(end) {
+      size_t len = (size_t)(end - conf);
+      if(!len) {
+        free(self->param_);
+        return -1;
+      }  
+      logname = malloc(len+1);
+      if(logname) {
+        strncpy(logname, conf, len);
+        logname[len] = 0;
+      }
+    }
+    else
+      logname = strdup(conf);
+  }
+
+  if(!logname) {
+    free(self->param_);
+    return -2;
+  }
+  ((log_target_syslog_param_t*)(self->param_))->logname_ = logname;
+
+  if(!end) {
+    ((log_target_syslog_param_t*)(self->param_))->facility_ = DAEMON;
+    return 0;
+  }
+  
+  if(end[1] == 0 || end[1] == ',') {
+    free(logname);
+    free(self->param_);
+    return -1;
+  }
+    
+  const char* start = end + 1;
+  end = strchr(start, ',');
+  int i;
+  for(i=0;;++i) {
+    if(facilitynames[i].c_name == NULL) {
+      free(logname);
+      free(self->param_);
+      return -1;
+    }
+
+    if(( end && !strncmp(start, facilitynames[i].c_name, (size_t)(end - start)) && facilitynames[i].c_name[(size_t)(end-start)] == 0) ||
+       (!end && !strcmp(start, facilitynames[i].c_name))) {
+        ((log_target_syslog_param_t*)(self->param_))->facility_ = facilitynames[i].c_val;
+        break;
+    }
+  }
+
+  return 0;
+}
+
+void log_target_syslog_open(log_target_t* self)
+{
+  if(!self || !self->param_)
+    return;
+
+  openlog(((log_target_syslog_param_t*)(self->param_))->logname_, LOG_PID, ((log_target_syslog_param_t*)(self->param_))->facility_);
+  self->opened_ = 1;
+}
+
+void log_target_syslog_log(log_target_t* self, log_prio_t prio, const char* msg)
+{
+  if(!self || !self->param_ || !self->opened_)
+    return;
+
+  syslog((prio + 2) | ((log_target_syslog_param_t*)(self->param_))->facility_, "%s", msg);  
+}
+
+void log_target_syslog_close(log_target_t* self)
+{
+  closelog();
+  self->opened_ = 0;
+}
+
+void log_target_syslog_clear(log_target_t* self)
+{
+  if(!self || !self->param_)
+    return;
+
+  if(((log_target_syslog_param_t*)(self->param_))->logname_)
+    free(((log_target_syslog_param_t*)(self->param_))->logname_);
+
+  free(self->param_);
+}
+
+log_target_t* log_target_syslog_new()
+{
+  log_target_t* tmp = malloc(sizeof(log_target_t));
+  if(!tmp)
+    return NULL;
+
+  tmp->type_ = TARGET_SYSLOG;
+  tmp->init = &log_target_syslog_init;
+  tmp->open = &log_target_syslog_open;
+  tmp->log = &log_target_syslog_log;
+  tmp->close = &log_target_syslog_close;
+  tmp->clear = &log_target_syslog_clear;
+  tmp->opened_ = 0;
+  tmp->enabled_ = 0;
+  tmp->max_prio_ = NOTICE;
+  tmp->param_ = NULL;
+  tmp->next_ = NULL;
+
+  return tmp;
+}
+
+
+struct log_target_file_param_struct {
+  char* logfilename_;
+  FILE* file_;
+};
+typedef struct log_target_file_param_struct log_target_file_param_t;
+
+int log_target_file_init(log_target_t* self, const char* conf)
+{
+  if(!self || (conf && conf[0] == 0))
+    return -1;
+  
+  self->param_ = malloc(sizeof(log_target_file_param_t));
+  if(!self->param_)
+    return -2;
+
+  char* logfilename;
+  if(!conf)
+    logfilename = strdup("uanytun.log");
+  else {
+    const char* end = strchr(conf, ',');
+    if(end) {
+      size_t len = (size_t)(end - conf);
+      if(!len) {
+        free(self->param_);
+        return -1;
+      }  
+      logfilename = malloc(len+1);
+      if(logfilename) {
+        strncpy(logfilename, conf, len);
+        logfilename[len] = 0;
+      }
+    }
+    else
+      logfilename = strdup(conf);
+  }
+
+  if(!logfilename) {
+    free(self->param_);
+    return -2;
+  }
+  ((log_target_file_param_t*)(self->param_))->logfilename_ = logfilename;
+  ((log_target_file_param_t*)(self->param_))->file_ = NULL;
+
+  return 0;
+}
+
+void log_target_file_open(log_target_t* self)
+{
+  if(!self || !self->param_)
+    return;
+
+  ((log_target_file_param_t*)(self->param_))->file_ = fopen(((log_target_file_param_t*)(self->param_))->logfilename_, "w");
+  if(((log_target_file_param_t*)(self->param_))->file_)
+    self->opened_ = 1;
+}
+
+void log_target_file_log(log_target_t* self, log_prio_t prio, const char* msg)
+{
+  if(!self || !self->param_ || !self->opened_)
+    return;
+
+  fprintf(((log_target_file_param_t*)(self->param_))->file_, "%s %s: %s\n", get_time_formatted(), log_prio_to_string(prio), msg);
+  fflush(((log_target_file_param_t*)(self->param_))->file_);
+}
+
+void log_target_file_close(log_target_t* self)
+{
+  if(!self || !self->param_)
+    return;
+
+  fclose(((log_target_file_param_t*)(self->param_))->file_);
+  self->opened_ = 0;
+}
+
+void log_target_file_clear(log_target_t* self)
+{
+  if(!self || !self->param_)
+    return;
+
+  if(((log_target_file_param_t*)(self->param_))->logfilename_)
+    free(((log_target_file_param_t*)(self->param_))->logfilename_);
+
+  free(self->param_);
+}
+
+
+log_target_t* log_target_file_new()
+{
+  log_target_t* tmp = malloc(sizeof(log_target_t));
+  if(!tmp)
+    return NULL;
+
+  tmp->type_ = TARGET_FILE;
+  tmp->init = &log_target_file_init;
+  tmp->open = &log_target_file_open;
+  tmp->log = &log_target_file_log;
+  tmp->close = &log_target_file_close;
+  tmp->clear = &log_target_file_clear;
+  tmp->opened_ = 0;
+  tmp->enabled_ = 0;
+  tmp->max_prio_ = NOTICE;
+  tmp->param_ = NULL;
+  tmp->next_ = NULL;
+
+  return tmp;
+}
+
+
+void log_target_stdout_log(log_target_t* self, log_prio_t prio, const char* msg)
+{
+  printf("%s %s: %s\n", get_time_formatted(), log_prio_to_string(prio), msg);
+}
+
+log_target_t* log_target_stdout_new()
+{
+  log_target_t* tmp = malloc(sizeof(log_target_t));
+  if(!tmp)
+    return NULL;
+
+  tmp->type_ = TARGET_STDOUT;
+  tmp->init = NULL;
+  tmp->open = NULL;
+  tmp->log = &log_target_stdout_log;
+  tmp->close = NULL;
+  tmp->clear = NULL;
+  tmp->opened_ = 0;
+  tmp->enabled_ = 0;
+  tmp->max_prio_ = NOTICE;
+  tmp->param_ = NULL;
+  tmp->next_ = NULL;
+
+  return tmp;
+}
+
+
+void log_target_stderr_log(log_target_t* self, log_prio_t prio, const char* msg)
+{
+  fprintf(stderr, "%s %s: %s\n", get_time_formatted(), log_prio_to_string(prio), msg);
+}
+
+log_target_t* log_target_stderr_new()
+{
+  log_target_t* tmp = malloc(sizeof(log_target_t));
+  if(!tmp)
+    return NULL;
+
+  tmp->type_ = TARGET_STDERR;
+  tmp->init = NULL;
+  tmp->open = NULL;
+  tmp->log = &log_target_stderr_log;
+  tmp->close = NULL;
+  tmp->clear = NULL;
+  tmp->opened_ = 0;
+  tmp->enabled_ = 0;
+  tmp->max_prio_ = NOTICE;
+  tmp->param_ = NULL;
+  tmp->next_ = NULL;
+
+  return tmp;
+}
diff --git a/options.c b/options.c
new file mode 100644
index 0000000..da0f149
--- /dev/null
+++ b/options.c
@@ -0,0 +1,267 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include "options.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "log.h"
+
+#define PARSE_BOOL_PARAM(SHORT, LONG, VALUE)             \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+      VALUE = 1;
+
+#define PARSE_INVERSE_BOOL_PARAM(SHORT, LONG, VALUE)     \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+      VALUE = 0;
+
+#define PARSE_INT_PARAM(SHORT, LONG, VALUE)              \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+    {                                                    \
+      if(argc < 1)                                       \
+        return i;                                        \
+      VALUE = atoi(argv[i+1]);                           \
+      argc--;                                            \
+      i++;                                               \
+    }
+
+#define PARSE_STRING_PARAM(SHORT, LONG, VALUE)           \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+    {                                                    \
+      if(argc < 1 || argv[i+1][0] == '-')                \
+        return i;                                        \
+      if(VALUE) free(VALUE);                             \
+      VALUE = strdup(argv[i+1]);                         \
+      if(!VALUE)                                         \
+        return -2;                                       \
+      argc--;                                            \
+      i++;                                               \
+    }
+
+#define PARSE_STRING_PARAM_SEC(SHORT, LONG, VALUE)       \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+    {                                                    \
+      if(argc < 1 || argv[i+1][0] == '-')                \
+        return i;                                        \
+      if(VALUE) free(VALUE);                             \
+      VALUE = strdup(argv[i+1]);                         \
+      if(!VALUE)                                         \
+        return -2;                                       \
+      size_t j;                                          \
+      for(j=0; j < strlen(argv[i+1]); ++j)               \
+        argv[i+1][j] = '#';                              \
+      argc--;                                            \
+      i++;                                               \
+    }
+
+#define PARSE_HEXSTRING_PARAM_SEC(SHORT, LONG, VALUE)    \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+    {                                                    \
+      if(argc < 1 || argv[i+1][0] == '-')                \
+        return i;                                        \
+      int ret;                                           \
+      ret = options_parse_hex_string(argv[i+1], &VALUE); \
+      if(ret > 0)                                        \
+        return i+1;                                      \
+      else if(ret < 0)                                   \
+        return ret;                                      \
+      size_t j;                                          \
+      for(j=0; j < strlen(argv[i+1]); ++j)               \
+        argv[i+1][j] = '#';                              \
+      argc--;                                            \
+      i++;                                               \
+    }
+
+#define PARSE_STRING_LIST(SHORT, LONG, LIST)             \
+    else if(!strcmp(str,SHORT) || !strcmp(str,LONG))     \
+    {                                                    \
+      if(argc < 1 || argv[i+1][0] == '-')                \
+        return i;                                        \
+      int ret = string_list_add(&LIST, argv[i+1]);       \
+      if(ret == -2)                                      \
+        return ret;                                      \
+      else if(ret)                                       \
+        return i+1;                                      \
+      argc--;                                            \
+      i++;                                               \
+    }
+
+int options_parse_hex_string(const char* hex, buffer_t* buffer)
+{
+  if(!hex || !buffer)
+    return -1;
+
+  u_int32_t hex_len = strlen(hex);
+  if(hex_len%2)
+    return 1;
+
+  if(buffer->buf_) 
+    free(buffer->buf_);
+  
+  buffer->length_ = hex_len/2;
+  buffer->buf_ = malloc(buffer->length_);
+  if(!buffer->buf_) {
+    buffer->length_ = 0;
+    return -2;
+  }
+
+  const char* ptr = hex;
+  int i;
+  for(i=0;i<buffer->length_;++i) {
+    u_int32_t tmp;
+    sscanf(ptr, "%2X", &tmp);
+    buffer->buf_[i] = (u_int8_t)tmp;
+    ptr += 2;
+  }
+
+  return 0;
+}
+
+
+
+int options_parse(options_t* opt, int argc, char* argv[])
+{
+  if(!opt)
+    return -1;
+
+  options_default(opt);
+
+  if(opt->progname_)
+    free(opt->progname_);
+  opt->progname_ = strdup(argv[0]);
+  if(!opt->progname_)
+    return -2;
+
+  argc--;
+
+  int i;
+  for(i=1; argc > 0; ++i)
+  {
+    char* str = argv[i];
+    argc--;
+
+    if(!strcmp(str,"-h") || !strcmp(str,"--help"))
+      return -1;
+    PARSE_INVERSE_BOOL_PARAM("-D","--nodaemonize", opt->daemonize_)
+    PARSE_STRING_PARAM("-u","--username", opt->username_)
+    PARSE_STRING_PARAM("-g","--groupname", opt->groupname_)
+    PARSE_STRING_PARAM("-C","--chroot", opt->chroot_dir_)
+    PARSE_STRING_PARAM("-P","--write-pid", opt->pid_file_)
+    PARSE_STRING_LIST("-L","--log", opt->log_targets_)
+    PARSE_STRING_PARAM("-f","--config", opt->conf_file_)
+    PARSE_STRING_PARAM("-s","--socket", opt->command_sock_)
+    PARSE_STRING_PARAM("-d","--device", opt->switch_dev_)
+    else 
+      return i;
+  }
+
+  return 0;
+}
+
+void options_parse_post(options_t* opt)
+{
+  if(!opt)
+    return;
+// nothing to do
+}
+
+void options_default(options_t* opt)
+{
+  if(!opt)
+    return;
+
+  opt->progname_ = strdup("rhctl");
+  opt->daemonize_ = 1;
+  opt->username_ = NULL;
+  opt->groupname_ = NULL;
+  opt->chroot_dir_ = NULL;
+  opt->pid_file_ = NULL;
+  string_list_init(&opt->log_targets_);
+
+  opt->conf_file_ = strdup("/etc/rhctl/rhctl.conf");
+  opt->command_sock_ = strdup("/var/run/rhctl/cmd.sock");
+  opt->switch_dev_ = strdup("/dev/audioswitch");
+}
+
+void options_clear(options_t* opt)
+{
+  if(!opt)
+    return;
+
+  if(opt->progname_)
+    free(opt->progname_);
+  if(opt->username_)
+    free(opt->username_);
+  if(opt->groupname_)
+    free(opt->groupname_);
+  if(opt->chroot_dir_)
+    free(opt->chroot_dir_);
+  if(opt->pid_file_)
+    free(opt->pid_file_);
+  string_list_clear(&opt->log_targets_);
+
+  if(opt->conf_file_)
+    free(opt->conf_file_);
+  if(opt->command_sock_)
+    free(opt->command_sock_);
+  if(opt->switch_dev_)
+    free(opt->switch_dev_);
+}
+
+void options_print_usage()
+{
+  printf("USAGE:\n");
+  printf("switchctl [-h|--help]                         prints this...\n");
+  printf("          [-D|--nodaemonize]                  don't run in background\n");
+  printf("          [-u|--username] <username>          change to this user\n");
+  printf("          [-g|--groupname] <groupname>        change to this group\n");
+  printf("          [-C|--chroot] <path>                chroot to this directory\n");
+  printf("          [-P|--write-pid] <path>             write pid to this file\n");
+  printf("          [-L|--log] <target>:<level>[,<param1>[,<param2>..]]\n");
+  printf("                                              add a log target, can be invoked several times\n");
+  printf("          [-f|--config] <file>                the configuration file e.g. /etc/rhctl/rhctl.conf\n");
+  printf("          [-s|--command-sock] <unix sock>     the command socket e.g. /var/run/rhctl/cmd.sock\n");
+  printf("          [-d|--device] <tty>                 the tty the audio switch is connected to\n");
+}
+
+void options_print(options_t* opt)
+{
+  if(!opt)
+    return;
+
+  printf("progname: '%s'\n", opt->progname_);
+  printf("daemonize: %d\n", opt->daemonize_);
+  printf("username: '%s'\n", opt->username_);
+  printf("groupname: '%s'\n", opt->groupname_);
+  printf("chroot_dir: '%s'\n", opt->chroot_dir_);
+  printf("pid_file: '%s'\n", opt->pid_file_);
+  printf("log_targets: \n");
+  string_list_print(&opt->log_targets_, "  '", "'\n");
+
+  printf("conf_file: '%s'\n", opt->conf_file_);
+  printf("command_sock: '%s'\n", opt->command_sock_);
+  printf("switch_dev: '%s'\n", opt->switch_dev_);
+}
diff --git a/options.h b/options.h
new file mode 100644
index 0000000..fb33c24
--- /dev/null
+++ b/options.h
@@ -0,0 +1,51 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _OPTIONS_H_
+#define _OPTIONS_H_
+
+#include "string_list.h"
+
+struct options_struct {
+  char* progname_;
+  int daemonize_;
+  char* username_;
+  char* groupname_;
+  char* chroot_dir_;
+  char* pid_file_;
+  string_list_t log_targets_;
+
+  char* conf_file_;
+  char* command_sock_;
+  char* switch_dev_;
+};
+typedef struct options_struct options_t;
+
+int options_parse_hex_string(const char* hex, buffer_t* buffer);
+
+int options_parse(options_t* opt, int argc, char* argv[]);
+void options_parse_post(options_t* opt);
+void options_default(options_t* opt);
+void options_clear(options_t* opt);
+void options_print_usage();
+void options_print(options_t* opt);
+
+#endif
diff --git a/sig_handler.c b/sig_handler.c
new file mode 100644
index 0000000..8be2de3
--- /dev/null
+++ b/sig_handler.c
@@ -0,0 +1,159 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include "log.h"
+#include <signal.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/select.h>
+#include <errno.h>
+
+#include "sig_handler.h"
+
+#include <stdio.h>
+
+
+static int sig_pipe_fds[2];
+
+
+static void sig_handler(int sig)
+{
+  sigset_t set;
+  int ret = read(sig_pipe_fds[0], &set, sizeof(sigset_t));
+  if(ret != sizeof(sigset_t))
+    sigemptyset(&set);
+
+  sigaddset(&set, sig);
+  ret = write(sig_pipe_fds[1], &set, sizeof(sigset_t));
+}
+
+
+int signal_init()
+{
+  if(pipe(sig_pipe_fds)) {
+    log_printf(ERROR, "signal handling init failed (pipe error: %s)", strerror(errno));
+    return -1;
+  }
+
+  int i;
+  for(i=0; i<2; ++i) {
+    int fd_flags = fcntl(sig_pipe_fds[i], F_GETFL);
+    if(fd_flags == -1) {
+      log_printf(ERROR, "signal handling init failed (pipe fd[%d] read flags error: %s)", i, strerror(errno));
+      return -1;
+    }
+    if(fcntl(sig_pipe_fds[i], F_SETFL, fd_flags | O_NONBLOCK) == -1){
+      log_printf(ERROR, "signal handling init failed (pipe fd[%d] write flags error: %s)", i, strerror(errno));
+      return -1;
+    }
+  }
+
+  struct sigaction act;
+  act.sa_handler = sig_handler;
+  sigfillset(&act.sa_mask);
+  act.sa_flags = 0;
+
+  if((sigaction(SIGINT, &act, NULL) < 0) ||
+     (sigaction(SIGQUIT, &act, NULL) < 0) ||
+     (sigaction(SIGTERM, &act, NULL) < 0) ||
+     (sigaction(SIGHUP, &act, NULL) < 0) ||
+     (sigaction(SIGUSR1, &act, NULL) < 0) ||
+     (sigaction(SIGUSR2, &act, NULL) < 0)) {
+
+    log_printf(ERROR, "signal handling init failed (sigaction error: %s)", strerror(errno));
+    close(sig_pipe_fds[0]);
+    close(sig_pipe_fds[1]);
+  }
+
+  return sig_pipe_fds[0];
+}
+
+int signal_handle()
+{
+  sigset_t set, oldset, tmpset;
+
+  sigemptyset(&tmpset);
+  sigaddset(&tmpset, SIGINT);
+  sigaddset(&tmpset, SIGQUIT);
+  sigaddset(&tmpset, SIGTERM);
+  sigaddset(&tmpset, SIGHUP);
+  sigaddset(&tmpset, SIGUSR1);
+  sigaddset(&tmpset, SIGUSR2);
+  sigprocmask(SIG_BLOCK, &tmpset, &oldset);
+
+  int ret = read(sig_pipe_fds[0], &set, sizeof(sigset_t));
+  if(ret != sizeof(sigset_t))
+    sigemptyset(&set);
+
+  int return_value = 0;
+  int sig;
+  for(sig=1; sig < _NSIG; ++sig) {
+    if(sigismember(&set, sig)) {
+      switch(sig) {
+      case SIGINT: log_printf(NOTICE, "SIG-Int caught, exitting"); return_value = 1; break;
+      case SIGQUIT: log_printf(NOTICE, "SIG-Quit caught, exitting"); return_value = 1; break;
+      case SIGTERM: log_printf(NOTICE, "SIG-Term caught, exitting"); return_value = 1; break;
+      case SIGHUP: log_printf(NOTICE, "SIG-Hup caught"); break;
+      case SIGUSR1: log_printf(NOTICE, "SIG-Usr1 caught"); break;
+      case SIGUSR2: log_printf(NOTICE, "SIG-Usr2 caught"); break;
+      default: log_printf(WARNING, "unknown signal %d caught, ignoring", sig); break;
+      }
+      sigdelset(&set, sig);
+    }
+  }
+
+  sigprocmask(SIG_SETMASK, &oldset, NULL);
+  return return_value;
+}
+
+void signal_stop()
+{
+  struct sigaction act;
+  act.sa_handler = SIG_DFL;
+  sigemptyset(&act.sa_mask);
+  act.sa_flags = 0;
+
+  sigaction(SIGINT, &act, NULL);
+  sigaction(SIGQUIT, &act, NULL);
+  sigaction(SIGTERM, &act, NULL);
+  sigaction(SIGHUP, &act, NULL);
+  sigaction(SIGUSR1, &act, NULL);
+  sigaction(SIGUSR2, &act, NULL);
+
+  close(sig_pipe_fds[0]);
+  close(sig_pipe_fds[1]);
+}
diff --git a/sig_handler.h b/sig_handler.h
new file mode 100644
index 0000000..733531d
--- /dev/null
+++ b/sig_handler.h
@@ -0,0 +1,45 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SIG_HANDLER_H_
+#define _SIG_HANDLER_H_
+
+#include <signal.h>
+
+int signal_init();
+int signal_handle();
+void signal_stop();
+
+#endif
diff --git a/string_list.c b/string_list.c
new file mode 100644
index 0000000..e5e8a62
--- /dev/null
+++ b/string_list.c
@@ -0,0 +1,113 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "string_list.h"
+
+void string_list_init(string_list_t* list)
+{
+  if(!list)
+    return;
+  
+  list->first_ = NULL;
+}
+
+void string_list_clear(string_list_t* list)
+{
+  if(!list)
+    return;
+
+  while(list->first_) {
+    string_list_element_t* tmp;
+    tmp = list->first_;
+    list->first_ = tmp->next_;
+    if(tmp->string_)
+      free(tmp->string_);
+    free(tmp);
+  }
+}
+
+int string_list_add(string_list_t* list, const char* string)
+{
+  if(!list)
+    return -1;
+
+  if(!list->first_) {
+    list->first_ = malloc(sizeof(string_list_element_t));
+    if(!list->first_)
+      return -2;
+
+    list->first_->next_ = 0;
+    list->first_->string_ = strdup(string);
+    if(!list->first_->string_) {
+      free(list->first_);
+      list->first_ = NULL;
+      return -2;
+    }
+  }
+  else {
+    string_list_element_t* tmp = list->first_;
+    while(tmp->next_)
+      tmp = tmp->next_;
+
+    tmp->next_  = malloc(sizeof(string_list_element_t));
+    if(!tmp->next_)
+      return -2;
+
+    tmp->next_->next_ = 0;
+    tmp->next_->string_ = strdup(string);
+    if(!tmp->next_->string_) {
+      free(list->first_);
+      list->first_ = NULL;
+      return -2;
+    }
+  }
+  return 0;
+}
+
+void string_list_print(string_list_t* list, const char* head, const char* tail)
+{
+  if(!list)
+    return;
+  
+  string_list_element_t* tmp = list->first_;
+  while(tmp) {
+    printf("%s%s%s", head, tmp->string_, tail);
+    tmp = tmp->next_;
+  }
+}
diff --git a/string_list.h b/string_list.h
new file mode 100644
index 0000000..ed4ef13
--- /dev/null
+++ b/string_list.h
@@ -0,0 +1,56 @@
+/*
+ *  uAnytun
+ *
+ *  uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
+ *  featured implementation uAnytun has no support for multiple connections
+ *  or synchronisation. It is a small single threaded implementation intended
+ *  to act as a client on small platforms.
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *  
+ *
+ *  Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ *  This file is part of uAnytun.
+ *
+ *  uAnytun is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  uAnytun is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _STRING_LIST_H_
+#define _STRING_LIST_H_
+
+struct string_list_element_struct {
+  char* string_;
+  struct string_list_element_struct* next_;
+};
+typedef struct string_list_element_struct string_list_element_t;
+
+struct string_list_struct {
+  string_list_element_t* first_;
+};
+typedef struct string_list_struct string_list_t;
+
+void string_list_init(string_list_t* list);
+void string_list_clear(string_list_t* list);
+int string_list_add(string_list_t* list, const char* string);
+
+void string_list_print(string_list_t* list, const char* head, const char* tail);
+
+#endif
diff --git a/switchctl.c b/switchctl.c
new file mode 100644
index 0000000..1f119bc
--- /dev/null
+++ b/switchctl.c
@@ -0,0 +1,433 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "log.h"
+#include "sig_handler.h"
+#include "options.h"
+
+#include "command_queue.h"
+#include "client_list.h"
+#include "key_value_storage.h"
+
+#include "daemon.h"
+#include "utils.h"
+
+int send_command(int switch_fd, cmd_t* cmd)
+{
+  if(!cmd)
+    return -1;
+  
+  char* c = NULL;
+  switch(cmd->cmd) {
+  case SWITCH: c = cmd->param; break;
+  case STATUS: c = "*0SL"; break;
+  }
+  
+  if(c == NULL)
+    return 0;
+
+  int ret = send_string(switch_fd, c);
+  if(ret > 0) {
+    cmd_sent(cmd);
+    return 0;
+  }
+
+  return ret;
+}
+
+int send_response(int fd, const char* response)
+{
+  if(!response)
+    return -1;
+
+  int ret = send_string(fd, response);
+  do {
+    ret = write(fd, "\n", 1);
+  } while(!ret || (ret == -1 && errno == EINTR));
+
+  if(ret > 0)
+    return 0;
+
+  return ret;
+}
+
+int process_cmd(const char* cmd, int fd, cmd_t **cmd_q, client_t* client_lst)
+{
+  log_printf(DEBUG, "processing command from %d", fd);
+
+  if(!cmd_q || !cmd)
+    return -1;
+  
+  cmd_id_t cmd_id;
+  if(!strncmp(cmd, "switch", 6))
+    cmd_id = SWITCH;
+  else if(!strncmp(cmd, "status", 6))
+    cmd_id = STATUS;
+  else if(!strncmp(cmd, "log", 3))
+    cmd_id = LOG;
+  else if(!strncmp(cmd, "listen", 6)) {
+    cmd_id = LISTEN;
+  }
+  else {
+    log_printf(WARNING, "unknown command '%s'", cmd);
+    return 0;
+  }
+  char* param = strchr(cmd, ' ');
+  if(param) 
+    param++;
+
+  if(cmd_id == SWITCH) {
+    char* resp;
+    asprintf(&resp, "Request: %s", cmd);
+    if(resp) {
+      char* linefeed = strchr(resp, '\n');
+      if(linefeed) linefeed[0] = 0;
+      client_t* client;
+      int listener_cnt = 0;
+      for(client = client_lst; client; client = client->next)
+        if(client->request_listener && client->fd != fd) {
+          send_response(client->fd, resp);
+          listener_cnt++;
+        }
+      free(resp);
+      log_printf(DEBUG, "sent request to %d additional listeners", listener_cnt);
+    }
+// else silently ignore memory alloc error
+  }
+
+  switch(cmd_id) {
+  case SWITCH:
+  case STATUS: {
+    int ret = cmd_push(cmd_q, fd, cmd_id, param);
+    if(ret)
+      return ret;
+
+    log_printf(NOTICE, "command: %s", cmd); 
+    break;
+  }
+  case LOG: {
+    if(param && param[0])
+      log_printf(NOTICE, "ext msg: %s", param); 
+    else
+      log_printf(DEBUG, "ignoring empty ext log message");
+    break;
+  }
+  case LISTEN: {
+    client_t* listener = client_find(client_lst, fd);
+    if(listener) {
+      if(!param) {
+        listener->status_listener = 1;
+        listener->error_listener = 1;      
+        listener->request_listener = 1;
+      }
+      else {
+        if(!strncmp(param, "status", 6))
+          listener->status_listener = 1;
+        else if(!strncmp(param, "error", 5))
+          listener->error_listener = 1;      
+        else if(!strncmp(param, "request", 7))
+          listener->request_listener = 1;
+        else {
+          log_printf(DEBUG, "unkown listener type '%s'", param);
+          break;
+        }
+      }
+      log_printf(DEBUG, "listener %d requests %s messages", fd, param ? param:"all");
+    }
+    else {
+      log_printf(ERROR, "unable to add listener %d", fd);
+    }
+    break;
+  }
+  }
+  
+  return 0;
+}
+
+int process_switch(int switch_fd)
+{
+  int ret = 0;
+  struct timeval tv;
+  fd_set fds;
+  FD_ZERO(&fds);
+  FD_SET(switch_fd, &fds);
+  char buf[1];
+
+  for(;;) {
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+    ret = select(switch_fd+1, &fds, NULL, NULL, &tv);
+    if(!ret)
+      return 0;
+    else if(ret < 0)
+      return ret;
+
+    ret = read(switch_fd, buf, 1);
+    if(!ret)
+      return 2;
+    if(ret == -1 && errno == EAGAIN)
+      return 0;
+    else if(ret < 0)
+      break;
+  }
+
+  return ret;
+}
+
+int main_loop(int switch_fd, int cmd_listen_fd)
+{
+  log_printf(NOTICE, "entering main loop");
+
+  fd_set readfds, tmpfds;
+  FD_ZERO(&readfds);
+  FD_SET(switch_fd, &readfds);
+  FD_SET(cmd_listen_fd, &readfds);
+  int max_fd = switch_fd > cmd_listen_fd ? switch_fd : cmd_listen_fd;
+  cmd_t* cmd_q = NULL;
+  client_t* client_lst = NULL;
+
+  int sig_fd = signal_init();
+  if(sig_fd < 0)
+    return -1;
+  FD_SET(sig_fd, &readfds);
+  max_fd = (max_fd < sig_fd) ? sig_fd : max_fd;
+
+  struct timeval timeout;
+  int return_value = 0;
+  while(!return_value) {
+    memcpy(&tmpfds, &readfds, sizeof(tmpfds));
+
+    timeout.tv_sec = 0;
+    timeout.tv_usec = 200000;
+    int ret = select(max_fd+1, &tmpfds, NULL, NULL, &timeout);
+    if(ret == -1 && errno != EINTR) {
+      log_printf(ERROR, "select returned with error: %s", strerror(errno));
+      return_value = -1;
+      break;
+    }
+    if(ret == -1)
+      continue;
+    if(!ret) {
+      if(cmd_q && cmd_has_expired(*cmd_q)) {
+        log_printf(ERROR, "last command expired");
+        cmd_pop(&cmd_q);
+      }
+      else
+        continue;
+    }
+
+    if(FD_ISSET(sig_fd, &tmpfds)) {
+      if(signal_handle()) {
+        return_value = 1;
+        break;
+      }
+    }
+   
+    if(FD_ISSET(switch_fd, &tmpfds)) {
+      return_value = process_switch(switch_fd);
+      if(return_value)
+        break;
+    }
+
+    if(FD_ISSET(cmd_listen_fd, &tmpfds)) {
+      int new_fd = accept(cmd_listen_fd, NULL, NULL);
+      if(new_fd < 0) {
+        log_printf(ERROR, "accept returned with error: %s", strerror(errno));
+        return_value = -1;
+        break;
+      }  
+      log_printf(DEBUG, "new command connection (fd=%d)", new_fd);
+      FD_SET(new_fd, &readfds);
+      max_fd = (max_fd < new_fd) ? new_fd : max_fd;
+      fcntl(new_fd, F_SETFL, O_NONBLOCK);
+      client_add(&client_lst, new_fd);
+    }
+
+    client_t* lst = client_lst;
+    while(lst) {
+      if(FD_ISSET(lst->fd, &tmpfds)) {
+        return_value = nonblock_recvline(&(lst->buffer), lst->fd, &cmd_q, client_lst);
+        if(return_value == 2) {
+          log_printf(DEBUG, "removing closed command connection (fd=%d)", lst->fd);
+          client_t* deletee = lst;
+          lst = lst->next;
+          FD_CLR(deletee->fd, &readfds);
+          client_remove(&client_lst, deletee->fd);
+          return_value = 0;
+          continue;
+        }
+        if(return_value)
+          break;
+
+      }
+      lst = lst->next;
+    }
+
+    if(cmd_q && !cmd_q->sent)
+      send_command(switch_fd, cmd_q);
+  }
+
+  cmd_clear(&cmd_q);
+  client_clear(&client_lst);
+  signal_stop();
+  return return_value;
+}
+
+int main(int argc, char* argv[])
+{
+  log_init();
+
+  options_t opt;
+  int ret = options_parse(&opt, argc, argv);
+  if(ret) {
+    if(ret > 0) {
+      fprintf(stderr, "syntax error near: %s\n\n", argv[ret]);
+    }
+    if(ret == -2) {
+      fprintf(stderr, "memory error on options_parse, exiting\n");
+    }
+
+    if(ret != -2)
+      options_print_usage();
+
+    options_clear(&opt);
+    log_close();
+    exit(ret);
+  }
+  string_list_element_t* tmp = opt.log_targets_.first_;
+  if(!tmp) {
+    log_add_target("syslog:3,rhctl,daemon");
+  }
+  else {
+    while(tmp) {
+      ret = log_add_target(tmp->string_);
+      if(ret) {
+        switch(ret) {
+        case -2: fprintf(stderr, "memory error on log_add_target, exitting\n"); break;
+        case -3: fprintf(stderr, "unknown log target: '%s', exitting\n", tmp->string_); break;
+        case -4: fprintf(stderr, "this log target is only allowed once: '%s', exitting\n", tmp->string_); break;
+        default: fprintf(stderr, "syntax error near: '%s', exitting\n", tmp->string_); break;
+        }
+        
+        options_clear(&opt);
+        log_close();
+        exit(ret);
+      }
+      tmp = tmp->next_;
+    }
+  }
+  log_printf(NOTICE, "just started...");
+  options_parse_post(&opt);
+
+  priv_info_t priv;
+  if(opt.username_)
+    if(priv_init(&priv, opt.username_, opt.groupname_)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }
+
+  FILE* pid_file = NULL;
+  if(opt.pid_file_) {
+    pid_file = fopen(opt.pid_file_, "w");
+    if(!pid_file) {
+      log_printf(WARNING, "unable to open pid file: %s", strerror(errno));
+    }
+  }
+
+  if(opt.chroot_dir_)
+    if(do_chroot(opt.chroot_dir_)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }
+  if(opt.username_)
+    if(priv_drop(&priv)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }
+
+  if(opt.daemonize_) {
+    pid_t oldpid = getpid();
+    daemonize();
+    log_printf(INFO, "running in background now (old pid: %d)", oldpid);
+  }
+
+  if(pid_file) {
+    pid_t pid = getpid();
+    fprintf(pid_file, "%d", pid);
+    fclose(pid_file);
+  }
+
+  int cmd_listen_fd = init_command_socket(opt.command_sock_);
+  if(cmd_listen_fd < 0) {
+    options_clear(&opt);
+    log_close();
+    exit(-1);
+  }
+  
+  int switch_fd = 0;
+  for(;;) {
+    switch_fd = open(opt.switch_dev_, O_RDWR | O_NOCTTY);
+    if(switch_fd < 0)
+      ret = 2;
+    else {
+      ret = setup_tty(switch_fd);
+      if(ret)
+        ret = 2;
+      else
+        ret = main_loop(switch_fd, cmd_listen_fd);
+    }
+
+    if(ret == 2) {
+      log_printf(ERROR, "%s error, trying to reopen in 5 seconds..", opt.switch_dev_);
+      if(switch_fd > 0)
+        close(switch_fd);
+      sleep(5);
+    }
+    else
+      break;
+  }
+
+  close(cmd_listen_fd);
+  if(switch_fd > 0)
+    close(switch_fd);
+
+  if(!ret)
+    log_printf(NOTICE, "normal shutdown");
+  else if(ret < 0)
+    log_printf(NOTICE, "shutdown after error");
+  else
+    log_printf(NOTICE, "shutdown after signal");
+
+  options_clear(&opt);
+  log_close();
+
+  return ret;
+}
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..4309118
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,173 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "datatypes.h"
+
+#include <sys/un.h>
+#include <termios.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "command_queue.h"
+#include "client_list.h"
+#include "log.h"
+
+#include "utils.h"
+
+int init_command_socket(const char* path)
+{
+  int fd = socket(AF_UNIX, SOCK_STREAM, 0);
+  if(fd < 0) {
+    log_printf(ERROR, "unable to open socket: %s", strerror(errno));
+    return -1;
+  }
+
+  struct sockaddr_un local;
+  local.sun_family = AF_UNIX;
+  if(sizeof(local.sun_path) <= strlen(path)) {
+    log_printf(ERROR, "socket path is to long (max %d)", sizeof(local.sun_path)-1);
+    return -1;
+  }
+  strcpy(local.sun_path, path);
+  unlink(local.sun_path);
+  int len = SUN_LEN(&local);
+  int ret = bind(fd, (struct sockaddr*)&local, len);
+  if(ret) {
+    log_printf(ERROR, "unable to bind to '%s': %s", local.sun_path, strerror(errno));
+    return -1;
+  }
+  
+  ret = listen(fd, 4);
+  if(ret) {
+    log_printf(ERROR, "unable to listen on command socket: %s", local.sun_path, strerror(errno));
+    return -1;
+  }
+
+  log_printf(INFO, "now listening on %s for incoming commands", path);
+  
+  return fd;
+}
+
+int send_string(int fd, const char* string)
+{
+  int len = strlen(string);
+  int offset = 0;
+  int ret;
+  for(;;) {
+    ret = write(fd, &string[offset], len - offset);
+    if(ret < 0) {
+      if(errno != EINTR)
+        return ret;
+
+      ret = 0;
+    }
+
+    offset += ret;
+    if(offset+1 >= len)
+      break;
+  }
+  return ret;
+}
+
+int nonblock_recvline(read_buffer_t* buffer, int fd, cmd_t** cmd_q, client_t* client_lst)
+{
+  int ret = 0;
+  for(;;) {
+    ret = recv(fd, &buffer->buf[buffer->offset], 1, 0);
+    if(!ret)
+      return 2;
+    if(ret == -1 && errno == EAGAIN)
+      return 0;
+    else if(ret < 0)
+      break;
+
+    if(buffer->buf[buffer->offset] == '\n') {
+      buffer->buf[buffer->offset] = 0;
+      ret = process_cmd(buffer->buf, fd, cmd_q, client_lst);
+      buffer->offset = 0;
+      break;
+    }
+
+    buffer->offset++;
+    if(buffer->offset >= sizeof(buffer->buf)) {
+      log_printf(DEBUG, "string too long (fd=%d)", fd);
+      buffer->offset = 0;
+      return 0;
+    }
+  }
+
+  return ret;
+}
+
+int setup_tty(int fd)
+{
+  struct termios tmio;
+  
+  int ret = tcgetattr(fd, &tmio);
+  if(ret) {
+    log_printf(ERROR, "Error on tcgetattr(): %s", strerror(errno));
+    return ret;
+  }
+
+  ret = cfsetospeed(&tmio, B9600);
+  if(ret) {
+    log_printf(ERROR, "Error on cfsetospeed(): %s", strerror(errno));
+    return ret;
+  }
+
+  ret = cfsetispeed(&tmio, B9600);
+  if(ret) {
+    log_printf(ERROR, "Error on cfsetispeed(): %s", strerror(errno));
+    return ret;
+  }
+
+  tmio.c_lflag &= ~ECHO;
+
+  ret = tcsetattr(fd, TCSANOW, &tmio);
+  if(ret) {
+    log_printf(ERROR, "Error on tcsetattr(): %s", strerror(errno));
+    return ret;
+  }
+  
+  ret = tcflush(fd, TCIFLUSH);
+  if(ret) {
+    log_printf(ERROR, "Error on tcflush(): %s", strerror(errno));
+    return ret;
+  }
+
+  fd_set fds;
+  struct timeval tv;
+  FD_ZERO(&fds);
+  FD_SET(fd, &fds);
+  tv.tv_sec = 0;
+  tv.tv_usec = 50000;
+  for(;;) {
+    ret = select(fd+1, &fds, NULL, NULL, &tv);
+    if(ret > 0) {
+      char buffer[100];
+      ret = read(fd, buffer, sizeof(buffer));
+    }
+    else
+      break;
+  }
+
+  return 0;
+}
diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..5e4da89
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,30 @@
+/*
+ *  rhctl
+ *
+ *  Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of rhctl.
+ *
+ *  rhctl is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhctl is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+int init_command_socket(const char* path);
+int send_string(int fd, const char* string);
+int nonblock_recvline(read_buffer_t* buffer, int fd, cmd_t** cmd_q, client_t* client_lst);
+int setup_tty(int fd);
+
+#endif