86 files changed, 1093 insertions, 879 deletions
diff --git a/.travis.yml b/.travis.yml
index 2275be3..29290fd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,21 +1,42 @@
+sudo: required
+dist: trusty
 language: c
 before_install:
-  - sudo add-apt-repository -y ppa:waja/precise-backports
+  # Trusty related fixed
+  # multiverse is no on trusty activated (https://github.com/travis-ci/travis-ci/issues/4979)
+  - sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ trusty multiverse" && sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ trusty-updates multiverse"
+  # /etc/hosts has IPv6 hosts (https://github.com/travis-ci/travis-ci/issues/4978)
+  - sudo [ $(ip addr show | grep "inet6 ::1" | wc -l) -lt "1" ] && sudo sed -i '/^::1/d' /etc/hosts
+  # Trusty has running ntpd on localhost, but we don't like that for our tests
+  - sudo killall -9 ntpd
+  # Trusty has no swap, lets create some
+  - sudo fallocate -l 20M /swapfile; sudo chmod 600 /swapfile; sudo mkswap /swapfile; sudo swapon /swapfile
+  - sudo add-apt-repository -y ppa:waja/trusty-backports
  - sudo apt-get update -qq
  - sudo apt-get purge -qq gawk
-  # ensure we have a test database in place for tests
+  # http://docs.travis-ci.com/user/trusty-ci-environment/ indicates, no MySQL on Trusty (yet)
-  - mysql -e "create database IF NOT EXISTS test;" -uroot
+  # # ensure we have a test database in place for tests
+  # - mysql -e "create database IF NOT EXISTS test;" -uroot
 install:
  - sudo apt-get install -qq --no-install-recommends perl autotools-dev libdbi-dev libldap2-dev libpq-dev libmysqlclient-dev libfreeradius-client-dev libkrb5-dev libnet-snmp-perl procps
-  - sudo apt-get install -qq --no-install-recommends libdbi0-dev libdbd-sqlite3 libssl-dev dnsutils snmp-mibs-downloader
+  - sudo apt-get install -qq --no-install-recommends libdbi0-dev libdbd-sqlite3 libssl-dev dnsutils snmp-mibs-downloader libsnmp-perl snmpd
  - sudo apt-get install -qq --no-install-recommends fping snmp netcat smbclient fping pure-ftpd apache2 postfix libhttp-daemon-ssl-perl
+  - sudo apt-get install -qq --no-install-recommends libdbd-sybase-perl libnet-dns-perl
+  - sudo apt-get install -qq --no-install-recommends slapd ldap-utils
  - sudo apt-get install -qq --no-install-recommends autoconf automake
+  - sudo apt-get install -qq --no-install-recommends faketime
+  # Trusty related dependencies (not yet provided)
+  - sudo apt-get install -qq --no-install-recommends mariadb-client mariadb-server
 before_script:
+  # ensure we have a test database in place for tests
+  - mysql -e "create database IF NOT EXISTS test;" -uroot
+  # Detect LDAP configuration (seems  volatile on trusty env)
+  - sed -e 's/cn=admin,dc=nodomain/'$(sudo /usr/sbin/slapcat|grep ^dn:|grep cn=|awk '{print $2}')'/' -i plugins/t/NPTest.cache.travis
  - tools/setup
-  - ./configure
+  - ./configure --enable-libtap
  - make
  - export NPTEST_CACHE="$(pwd)/plugins/t/NPTest.cache.travis"
  - ssh-keygen -t dsa -N "" -f ~/.ssh/id_dsa
diff --git a/AUTHORS b/AUTHORS
index 0c667f6..2d455be 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -21,3 +21,4 @@ Ton Voon
 Jan Wagner
 Holger Weiss
 Michael Wirtgen
+Oliver Skibbe
diff --git a/NEWS b/NEWS
index b3d2f1f..26f18cd 100644
--- a/NEWS
+++ b/NEWS
@@ -6,18 +6,37 @@ This file documents the major additions and syntax changes between releases.
          thresholds
        New check_snmp "-N" option to specify SNMPv3 context name
        New check_nt "-l" parameters: seconds|minutes|hours|days
-        Make sure check_disk won't hang on hanging (network) file systems
        New check_mailq -s option which tells the plugin to use sudo(8)
+        New -W/-C option for check_ldap to check number of entries (Gerhard Lausser)
+        The check_http -S/--ssl option now accepts the arguments "1.1" and "1.2"
+          to force TLSv1.1 and TLSv1.2 connections, respectively
+        The check_http -S/--ssl option now allows for specifying the desired
+          protocol with a "+" suffix to also accept newer versions
+        check_users: add support for range thresholds (John C. Frickson)
+        check_snmp: add ipv6 support (abrist)
+        check_http: report certificate expire date in UTC (pirtoo / ylfingr)
        FIXES
        Let check_real terminate lines with CRLF when talking to the server, as
          mandated by 2326
        Fix check_procs on HP-UX
+        check_smtp's -e/--expect option can now be combined with -S/--starttls
+        Fix incorrect performance data thresholds emitted by check_ups
        WARNINGS
        The format of the performance data emitted by check_mrtgtraf has been
          changed to comply with the development guidelines
-        check_ssh not returns CRITICAL for protocal/version errors
+        check_ssh now returns CRITICAL for protocol/version errors
+        If a plugin is invoked with -h/--help or -V/--version, the exit status
+          is now UNKNOWN
+        The superseded check_ntp.pl was removed, please use check_ntp_peer or
+          check_ntp_time instead
+2.1.2 16th October 2015
+        FIXES
+        Fix incorrect performance data thresholds emitted by check_ups
+        Fix check_dhcp's option parsing to not crash with certain arguments
+        Fix check_snmp using correct timeout
 2.1.1 2nd December 2014
        FIXES
@@ -26,6 +45,7 @@ This file documents the major additions and syntax changes between releases.
        Fix check_apt's handling of invalid regular expressions
        Fix check_real's server response processing
        Fix backslash escaping in check_tcp's --help output
+        Fix check_procs's unclosed filehandle in pst3 on Solaris
 2.1 15th October 2014
        ENHANCEMENTS
diff --git a/NP-VERSION-GEN b/NP-VERSION-GEN
index 12efad7..dd82bf1 100755
--- a/NP-VERSION-GEN
+++ b/NP-VERSION-GEN
@@ -6,7 +6,7 @@
 SRC_ROOT=`dirname $0`
 NPVF=NP-VERSION-FILE
-DEF_VER=2.1.1.git
+DEF_VER=2.1.2.git
 LF='
 '
diff --git a/THANKS.in b/THANKS.in
index 9a9ca3f..20283f6 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -335,3 +335,7 @@ Jonas Genannt
 Nick Peelman
 Sebastian Herbszt
 Christopher Schultz
+Matthias Hähnel
+Roberto Greiner
+Peter (pirtoo)
+ylfingr
diff --git a/configure.ac b/configure.ac
index ce1728e..0a554af 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.59)
-AC_INIT(monitoring-plugins,2.1.1)
+AC_INIT(monitoring-plugins,2.1.2)
 AC_CONFIG_SRCDIR(NPTest.pm)
 AC_CONFIG_FILES([gl/Makefile])
 AC_CONFIG_AUX_DIR(build-aux)
@@ -156,12 +156,6 @@ AC_CHECK_LIB(socket,socket,SOCKETLIBS="$SOCKETLIBS -lsocket")
 AC_CHECK_LIB(resolv,main,SOCKETLIBS="$SOCKETLIBS -lresolv")
 AC_SUBST(SOCKETLIBS)
-dnl Check for POSIX thread libraries
-AC_CHECK_HEADERS(pthread.h)
-AC_CHECK_LIB(pthread,pthread_create,THREADLIBS="-lpthread",
-             AC_CHECK_LIB(pthread,pthread_create,THREADLIBS="-lpthread -lrt",-lrt))
-AC_SUBST(THREADLIBS)
 dnl
 dnl check for math-related functions needing -lm
 AC_CHECK_HEADERS(math.h)
diff --git a/doc/RELEASING b/doc/RELEASING
index eee53d7..30c81cc 100644
--- a/doc/RELEASING
+++ b/doc/RELEASING
@@ -19,15 +19,15 @@ git push origin master
 git push origin v2.1.1
 *** Checkout new version
-rm -fr /tmp/monitoringlug
+rm -fr /tmp/monitoringplug
 # If you need to checkout the tag, don't forget to "checkout master" later to
 # get back to your development branch:
 git checkout tags/v2.1.1
 # Beware: the trailing slash of --prefix is REQUIRED
-git checkout-index --prefix=/tmp/monitoringlug/ -a
+git checkout-index --prefix=/tmp/monitoringplug/ -a
 *** Build the tarball
-cd /tmp/monitoringlug
+cd /tmp/monitoringplug
 tools/setup
 ./configure
 make dist
diff --git a/doc/developer-guidelines.sgml b/doc/developer-guidelines.sgml
index d934028..6f31f36 100644
--- a/doc/developer-guidelines.sgml
+++ b/doc/developer-guidelines.sgml
@@ -194,12 +194,13 @@
                                        <row>
                                                <entry align="center"><para>3</para></entry>
                                                <entry valign="middle"><para>Unknown</para></entry>
-                                                <entry><para>Invalid command line arguments were supplied to the 
+                                                <entry><para>Invalid command line arguments were supplied to the
                                                plugin or low-level failures internal to the plugin (such as unable to fork,
                                                or open a tcp socket) that prevent it from performing the specified
                                                operation. Higher-level errors (such as name resolution errors,
                                                socket timeouts, etc) are outside of the control of plugins and should
                                                generally NOT be reported as UNKNOWN states.
+                                                </para><para>The --help or --version output should also result in Unknown state.
                                                </para></entry>
                                        </row>
                                </tbody>
@@ -610,6 +611,9 @@
                <para>The option -v or --verbose should be present in all plugins.
                The user should be allowed to specify -v multiple times to increase
                the verbosity level, as described in <xref linkend="verboselevels">.</para>
+                <para>The exit code for version information or help should be UNKNOWN
+                (3).</para>
    </section>
    <section>
diff --git a/gl/Makefile.am b/gl/Makefile.am
index 54abb4c..15135c8 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -21,7 +21,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files base64 crypto/sha1 dirname environ floorf fsusage getaddrinfo gethostname getloadavg getopt-gnu gettext idpriv-droptemp mountlist regex setenv strcase strsep timegm unsetenv vasprintf vsnprintf
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files base64 crypto/sha1 dirname environ floorf fsusage getaddrinfo gethostname getloadavg getopt-gnu gettext idpriv-droptemp mountlist regex setenv strcase strcasestr strsep timegm unsetenv vasprintf vsnprintf
 AUTOMAKE_OPTIONS = 1.9.6 gnits subdir-objects
@@ -1553,6 +1553,15 @@ EXTRA_libgnu_a_SOURCES += strcasecmp.c strncasecmp.c
 ## end   gnulib module strcase
+## begin gnulib module strcasestr-simple
+EXTRA_DIST += str-two-way.h strcasestr.c
+EXTRA_libgnu_a_SOURCES += strcasestr.c
+## end   gnulib module strcasestr-simple
 ## begin gnulib module streq
diff --git a/gl/m4/gnulib-cache.m4 b/gl/m4/gnulib-cache.m4
index d6fca2a..90ad4aa 100644
--- a/gl/m4/gnulib-cache.m4
+++ b/gl/m4/gnulib-cache.m4
@@ -27,7 +27,7 @@
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files base64 crypto/sha1 dirname environ floorf fsusage getaddrinfo gethostname getloadavg getopt-gnu gettext idpriv-droptemp mountlist regex setenv strcase strsep timegm unsetenv vasprintf vsnprintf
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --no-conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files base64 crypto/sha1 dirname environ floorf fsusage getaddrinfo gethostname getloadavg getopt-gnu gettext idpriv-droptemp mountlist regex setenv strcase strcasestr strsep timegm unsetenv vasprintf vsnprintf
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
@@ -48,6 +48,7 @@ gl_MODULES([
  regex
  setenv
  strcase
+  strcasestr
  strsep
  timegm
  unsetenv
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 67a8156..9a4f502 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -121,6 +121,8 @@ AC_DEFUN([gl_EARLY],
  # Code from module stdio:
  # Code from module stdlib:
  # Code from module strcase:
+  # Code from module strcasestr:
+  # Code from module strcasestr-simple:
  # Code from module streq:
  # Code from module strerror:
  # Code from module strerror-override:
@@ -390,6 +392,17 @@ AC_DEFUN([gl_INIT],
    AC_LIBOBJ([strncasecmp])
    gl_PREREQ_STRNCASECMP
  fi
+  gl_FUNC_STRCASESTR
+  if test $HAVE_STRCASESTR = 0 || test $REPLACE_STRCASESTR = 1; then
+    AC_LIBOBJ([strcasestr])
+    gl_PREREQ_STRCASESTR
+  fi
+  gl_FUNC_STRCASESTR_SIMPLE
+  if test $HAVE_STRCASESTR = 0 || test $REPLACE_STRCASESTR = 1; then
+    AC_LIBOBJ([strcasestr])
+    gl_PREREQ_STRCASESTR
+  fi
+  gl_STRING_MODULE_INDICATOR([strcasestr])
  gl_FUNC_STRERROR
  if test $REPLACE_STRERROR = 1; then
    AC_LIBOBJ([strerror])
@@ -723,6 +736,7 @@ AC_DEFUN([gl_FILE_LIST], [
  lib/stdlib.in.h
  lib/str-two-way.h
  lib/strcasecmp.c
+  lib/strcasestr.c
  lib/streq.h
  lib/strerror-override.c
  lib/strerror-override.h
@@ -866,6 +880,7 @@ AC_DEFUN([gl_FILE_LIST], [
  m4/stdio_h.m4
  m4/stdlib_h.m4
  m4/strcase.m4
+  m4/strcasestr.m4
  m4/strerror.m4
  m4/string_h.m4
  m4/strings_h.m4
diff --git a/gl/m4/strcasestr.m4 b/gl/m4/strcasestr.m4
new file mode 100644
index 0000000..8681a6a
--- /dev/null
+++ b/gl/m4/strcasestr.m4
@@ -0,0 +1,142 @@
+# strcasestr.m4 serial 21
+dnl Copyright (C) 2005, 2007-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl Check that strcasestr is present and works.
+AC_DEFUN([gl_FUNC_STRCASESTR_SIMPLE],
+[
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  dnl Persuade glibc <string.h> to declare strcasestr().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_FUNC_MEMCHR])
+  AC_CHECK_FUNCS([strcasestr])
+  if test $ac_cv_func_strcasestr = no; then
+    HAVE_STRCASESTR=0
+  else
+    if test "$gl_cv_func_memchr_works" != yes; then
+      REPLACE_STRCASESTR=1
+    else
+      dnl Detect http://sourceware.org/bugzilla/show_bug.cgi?id=12092.
+      AC_CACHE_CHECK([whether strcasestr works],
+        [gl_cv_func_strcasestr_works_always],
+        [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <string.h> /* for strcasestr */
+#define P "_EF_BF_BD"
+#define HAYSTACK "F_BD_CE_BD" P P P P "_C3_88_20" P P P "_C3_A7_20" P
+#define NEEDLE P P P P P
+]], [[return !!strcasestr (HAYSTACK, NEEDLE);
+      ]])],
+          [gl_cv_func_strcasestr_works_always=yes],
+          [gl_cv_func_strcasestr_works_always=no],
+          [dnl glibc 2.12 and cygwin 1.7.7 have a known bug.  uClibc is not
+           dnl affected, since it uses different source code for strcasestr
+           dnl than glibc.
+           dnl Assume that it works on all other platforms, even if it is not
+           dnl linear.
+           AC_EGREP_CPP([Lucky user],
+             [
+#ifdef __GNU_LIBRARY__
+ #include <features.h>
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     || defined __UCLIBC__
+  Lucky user
+ #endif
+#elif defined __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#else
+  Lucky user
+#endif
+             ],
+             [gl_cv_func_strcasestr_works_always="guessing yes"],
+             [gl_cv_func_strcasestr_works_always="guessing no"])
+          ])
+        ])
+      case "$gl_cv_func_strcasestr_works_always" in
+        *yes) ;;
+        *)
+          REPLACE_STRCASESTR=1
+          ;;
+      esac
+    fi
+  fi
+]) # gl_FUNC_STRCASESTR_SIMPLE
+dnl Additionally, check that strcasestr is efficient.
+AC_DEFUN([gl_FUNC_STRCASESTR],
+[
+  AC_REQUIRE([gl_FUNC_STRCASESTR_SIMPLE])
+  if test $HAVE_STRCASESTR = 1 && test $REPLACE_STRCASESTR = 0; then
+    AC_CACHE_CHECK([whether strcasestr works in linear time],
+      [gl_cv_func_strcasestr_linear],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <signal.h> /* for signal */
+#include <string.h> /* for strcasestr */
+#include <stdlib.h> /* for malloc */
+#include <unistd.h> /* for alarm */
+static void quit (int sig) { exit (sig + 128); }
+]], [[
+    int result = 0;
+    size_t m = 1000000;
+    char *haystack = (char *) malloc (2 * m + 2);
+    char *needle = (char *) malloc (m + 2);
+    /* Failure to compile this test due to missing alarm is okay,
+       since all such platforms (mingw) also lack strcasestr.  */
+    signal (SIGALRM, quit);
+    alarm (5);
+    /* Check for quadratic performance.  */
+    if (haystack && needle)
+      {
+        memset (haystack, 'A', 2 * m);
+        haystack[2 * m] = 'B';
+        haystack[2 * m + 1] = 0;
+        memset (needle, 'A', m);
+        needle[m] = 'B';
+        needle[m + 1] = 0;
+        if (!strcasestr (haystack, needle))
+          result |= 1;
+      }
+    return result;
+    ]])],
+        [gl_cv_func_strcasestr_linear=yes], [gl_cv_func_strcasestr_linear=no],
+        [dnl Only glibc > 2.12 and cygwin > 1.7.7 are known to have a
+         dnl strcasestr that works in linear time.
+         AC_EGREP_CPP([Lucky user],
+           [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \
+     && !defined __UCLIBC__
+  Lucky user
+ #endif
+#endif
+#ifdef __CYGWIN__
+ #include <cygwin/version.h>
+ #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7)
+  Lucky user
+ #endif
+#endif
+           ],
+           [gl_cv_func_strcasestr_linear="guessing yes"],
+           [gl_cv_func_strcasestr_linear="guessing no"])
+        ])
+      ])
+    case "$gl_cv_func_strcasestr_linear" in
+      *yes) ;;
+      *)
+        REPLACE_STRCASESTR=1
+        ;;
+    esac
+  fi
+]) # gl_FUNC_STRCASESTR
+# Prerequisites of lib/strcasestr.c.
+AC_DEFUN([gl_PREREQ_STRCASESTR], [
+  :
+])
diff --git a/gl/strcasestr.c b/gl/strcasestr.c
new file mode 100644
index 0000000..53474a4
--- /dev/null
+++ b/gl/strcasestr.c
@@ -0,0 +1,82 @@
+/* Case-insensitive searching in a string.
+   Copyright (C) 2005-2013 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2005.
+   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, 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/>.  */
+#include <config.h>
+/* Specification.  */
+#include <string.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <strings.h>
+#define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
+/* Two-Way algorithm.  */
+#define RETURN_TYPE char *
+#define AVAILABLE(h, h_l, j, n_l)                       \
+  (!memchr ((h) + (h_l), '\0', (j) + (n_l) - (h_l))     \
+   && ((h_l) = (j) + (n_l)))
+#define CANON_ELEMENT(c) TOLOWER (c)
+#define CMP_FUNC(p1, p2, l)                             \
+  strncasecmp ((const char *) (p1), (const char *) (p2), l)
+#include "str-two-way.h"
+/* Find the first occurrence of NEEDLE in HAYSTACK, using
+   case-insensitive comparison.  This function gives unspecified
+   results in multibyte locales.  */
+char *
+strcasestr (const char *haystack_start, const char *needle_start)
+{
+  const char *haystack = haystack_start;
+  const char *needle = needle_start;
+  size_t needle_len; /* Length of NEEDLE.  */
+  size_t haystack_len; /* Known minimum length of HAYSTACK.  */
+  bool ok = true; /* True if NEEDLE is prefix of HAYSTACK.  */
+  /* Determine length of NEEDLE, and in the process, make sure
+     HAYSTACK is at least as long (no point processing all of a long
+     NEEDLE if HAYSTACK is too short).  */
+  while (*haystack && *needle)
+    {
+      ok &= (TOLOWER ((unsigned char) *haystack)
+             == TOLOWER ((unsigned char) *needle));
+      haystack++;
+      needle++;
+    }
+  if (*needle)
+    return NULL;
+  if (ok)
+    return (char *) haystack_start;
+  needle_len = needle - needle_start;
+  haystack = haystack_start + 1;
+  haystack_len = needle_len - 1;
+  /* Perform the search.  Abstract memory is considered to be an array
+     of 'unsigned char' values, not an array of 'char' values.  See
+     ISO C 99 section 6.2.6.1.  */
+  if (needle_len < LONG_NEEDLE_THRESHOLD)
+    return two_way_short_needle ((const unsigned char *) haystack,
+                                 haystack_len,
+                                 (const unsigned char *) needle_start,
+                                 needle_len);
+  return two_way_long_needle ((const unsigned char *) haystack, haystack_len,
+                              (const unsigned char *) needle_start,
+                              needle_len);
+}
+#undef LONG_NEEDLE_THRESHOLD
diff --git a/perlmods/Monitoring-Plugin-0.37.tar.gz b/perlmods/Monitoring-Plugin-0.37.tar.gz
deleted file mode 100644
index bb6fe69..0000000
--- a/perlmods/Monitoring-Plugin-0.37.tar.gz
+++ /dev/null
Binary files differ
diff --git a/perlmods/Monitoring-Plugin-0.39.tar.gz b/perlmods/Monitoring-Plugin-0.39.tar.gz
new file mode 100644
index 0000000..7a35d9e
--- /dev/null
+++ b/perlmods/Monitoring-Plugin-0.39.tar.gz
Binary files differ
diff --git a/plugins-root/check_dhcp.c b/plugins-root/check_dhcp.c
index b874c55..88b7ca1 100644
--- a/plugins-root/check_dhcp.c
+++ b/plugins-root/check_dhcp.c
@@ -229,7 +229,7 @@ struct in_addr requested_address;
 int process_arguments(int, char **);
 int call_getopt(int, char **);
-int validate_arguments(void);
+int validate_arguments(int, int);
 void print_usage(void);
 void print_help(void);
@@ -463,10 +463,9 @@ int send_dhcp_discover(int sock){
        discover_packet.hlen=ETHERNET_HARDWARE_ADDRESS_LENGTH;
        /*
-         * transaction ID is supposed to be random.  We won't use the address so
+         * transaction ID is supposed to be random.
-         * we don't care about high entropy here.  time(2) is good enough.
         */
-        srand(time(NULL));
+        srand(time(NULL)^getpid());
        packet_xid=random();
        discover_packet.xid=htonl(packet_xid);
@@ -692,17 +691,11 @@ int receive_dhcp_packet(void *buffer, int buffer_size, int sock, int timeout, st
                }
        else{
-                /* why do we need to peek first?  i don't know, its a hack.  without it, the source address of the first packet received was
-                   not being interpreted correctly.  sigh... */
                bzero(&source_address,sizeof(source_address));
                address_size=sizeof(source_address);
                recv_result=recvfrom(sock,(char *)buffer,buffer_size,MSG_PEEK,(struct sockaddr *)&source_address,&address_size);
                if(verbose)
-                        printf("recv_result_1: %d\n",recv_result);
+                        printf("recv_result: %d\n",recv_result);
-                recv_result=recvfrom(sock,(char *)buffer,buffer_size,0,(struct sockaddr *)&source_address,&address_size);
-                if(verbose)
-                        printf("recv_result_2: %d\n",recv_result);
                if(recv_result==-1){
                        if(verbose){
@@ -1059,29 +1052,19 @@ int get_results(void){
 /* process command-line arguments */
 int process_arguments(int argc, char **argv){
-        int c;
+        int arg_index;
        if(argc<1)
                return ERROR;
-        c=0;
+        arg_index = call_getopt(argc,argv);
-        while((c+=(call_getopt(argc-c,&argv[c])))<argc){
+        return validate_arguments(argc,arg_index);
-                /*
-                if(is_option(argv[c]))
-                        continue;
-                */
-                }
-        return validate_arguments();
        }
 int call_getopt(int argc, char **argv){
-        int c=0;
+        extern int optind;
-        int i=0;
        int option_index = 0;
        static struct option long_options[] =
        {
@@ -1098,25 +1081,14 @@ int call_getopt(int argc, char **argv){
        };
        while(1){
-                c=getopt_long(argc,argv,"+hVvt:s:r:t:i:m:u",long_options,&option_index);
+                int c=0;
-                i++;
+                c=getopt_long(argc,argv,"+hVvt:s:r:t:i:m:u",long_options,&option_index);
                if(c==-1||c==EOF||c==1)
                        break;
                switch(c){
-                case 'w':
-                case 'r':
-                case 't':
-                case 'i':
-                        i++;
-                        break;
-                default:
-                        break;
-                        }
-                switch(c){
                case 's': /* DHCP server address */
                        resolve_host(optarg,&dhcp_ip);
@@ -1163,11 +1135,11 @@ int call_getopt(int argc, char **argv){
                case 'V': /* version */
                        print_revision(progname, NP_VERSION);
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                case 'h': /* help */
                        print_help();
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                case 'v': /* verbose */
                        verbose=1;
@@ -1181,12 +1153,14 @@ int call_getopt(int argc, char **argv){
                        break;
                        }
                }
+        return optind;
-        return i;
        }
-int validate_arguments(void){
+int validate_arguments(int argc, int arg_index){
+        if(argc-optind > 0)
+                usage(_("Got unexpected non-option argument"));
        return OK;
        }
diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index 3982def..9ed12ba 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -526,10 +526,10 @@ main(int argc, char **argv)
                                break;
                        case 'V': /* version */
                                print_revision (progname, NP_VERSION);
-                                exit (STATE_OK);
+                                exit (STATE_UNKNOWN);
                        case 'h': /* help */
                                print_help ();
-                                exit (STATE_OK);
+                                exit (STATE_UNKNOWN);
                        }
                }
        }
@@ -880,7 +880,12 @@ send_icmp_ping(int sock, struct rta_host *host)
        hdr.msg_iov = &iov;
        hdr.msg_iovlen = 1;
+/* MSG_CONFIRM is a linux thing and only available on linux kernels >= 2.3.15, see send(2) */
+#ifdef MSG_CONFIRM
        len = sendmsg(sock, &hdr, MSG_CONFIRM);
+#else
+        len = sendmsg(sock, &hdr, 0);
+#endif
        if(len < 0 || (unsigned int)len != icmp_pkt_size) {
                if(debug) printf("Failed to send ping to %s\n",
diff --git a/plugins-root/pst3.c b/plugins-root/pst3.c
index ee9d108..c3589f0 100644
--- a/plugins-root/pst3.c
+++ b/plugins-root/pst3.c
@@ -139,8 +139,10 @@ try_again:
    if((ps_fd = open(ps_name, O_RDONLY)) == -1)
      continue;
-    if((as_fd = open(as_name, O_RDONLY)) == -1)
+    if((as_fd = open(as_name, O_RDONLY)) == -1) {
+      close(ps_fd);
      continue;
+    }
    if(read(ps_fd, &psinfo, sizeof(psinfo)) != sizeof(psinfo)) {
      int err = errno;
diff --git a/plugins-scripts/Makefile.am b/plugins-scripts/Makefile.am
index 794a34f..ea65aed 100644
--- a/plugins-scripts/Makefile.am
+++ b/plugins-scripts/Makefile.am
@@ -36,6 +36,8 @@ TESTS = @SCRIPT_TEST@
 test:
        perl -I $(top_builddir) -I $(top_srcdir) ../test.pl
        perl -I $(top_builddir) -I $(top_srcdir) ../test.pl t/utils.t   # utils.t is excluded from above, so manually ask to test
+        for SCRIPT in *.pl; do perl -wc $$SCRIPT || exit 1; done
+        set -e; for SCRIPT in *.sh; do sh -n $$SCRIPT || exit 1; done
 test-debug:
        NPTEST_DEBUG=1 HARNESS_VERBOSE=1 perl -I $(top_builddir) -I $(top_srcdir) ../test.pl
diff --git a/plugins-scripts/check_breeze.pl b/plugins-scripts/check_breeze.pl
index 1a3aceb..05b9920 100755
--- a/plugins-scripts/check_breeze.pl
+++ b/plugins-scripts/check_breeze.pl
@@ -6,7 +6,6 @@ use Getopt::Long;
 use vars qw($opt_V $opt_h $opt_w $opt_c $opt_H $opt_C $PROGNAME);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw(%ERRORS &print_revision &support &usage);
 $PROGNAME = "check_breeze";
@@ -29,10 +28,10 @@ GetOptions
 if ($opt_V) {
        print_revision($PROGNAME,'@NP_VERSION@');
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
-if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
+if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
 ($opt_H) || usage("Host name/address not specified\n");
 my $host = $1 if ($opt_H =~ /([-.A-Za-z0-9]+)/);
diff --git a/plugins-scripts/check_disk_smb.pl b/plugins-scripts/check_disk_smb.pl
index 4805434..9899226 100755
--- a/plugins-scripts/check_disk_smb.pl
+++ b/plugins-scripts/check_disk_smb.pl
@@ -26,7 +26,6 @@ use vars qw($opt_P $opt_V $opt_h $opt_H $opt_s $opt_W $opt_u $opt_p $opt_w $opt_
 use vars qw($PROGNAME);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
 sub print_help ();
@@ -55,10 +54,10 @@ GetOptions
 if ($opt_V) {
        print_revision($PROGNAME,'@NP_VERSION@'); #'
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
-if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
+if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
 my $smbclient = $utils::PATH_TO_SMBCLIENT;
 $smbclient    || usage("check requires smbclient, smbclient not set\n");
diff --git a/plugins-scripts/check_file_age.pl b/plugins-scripts/check_file_age.pl
index 4415fdf..56b8e97 100755
--- a/plugins-scripts/check_file_age.pl
+++ b/plugins-scripts/check_file_age.pl
@@ -27,7 +27,6 @@ use File::stat;
 use vars qw($PROGNAME);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw (%ERRORS &print_revision &support);
 sub print_help ();
@@ -61,12 +60,12 @@ GetOptions(
 if ($opt_V) {
        print_revision($PROGNAME, '@NP_VERSION@');
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 if ($opt_h) {
        print_help();
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 $opt_f = shift unless ($opt_f);
diff --git a/plugins-scripts/check_flexlm.pl b/plugins-scripts/check_flexlm.pl
index 5f3ed59..e3fe296 100755
--- a/plugins-scripts/check_flexlm.pl
+++ b/plugins-scripts/check_flexlm.pl
@@ -37,7 +37,6 @@ use Getopt::Long;
 use vars qw($opt_V $opt_h $opt_F $opt_t $verbose $PROGNAME);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw(%ERRORS &print_revision &support &usage);
 $PROGNAME="check_flexlm";
@@ -59,7 +58,7 @@ GetOptions
 if ($opt_V) {
        print_revision($PROGNAME,'@NP_VERSION@');
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 unless (defined $opt_t) {
@@ -67,7 +66,7 @@ unless (defined $opt_t) {
 }
-if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
+if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
 unless (defined $opt_F) {
        print "Missing license.dat file\n";
diff --git a/plugins-scripts/check_ifoperstatus.pl b/plugins-scripts/check_ifoperstatus.pl
index cf2c7b5..3eed4bc 100755
--- a/plugins-scripts/check_ifoperstatus.pl
+++ b/plugins-scripts/check_ifoperstatus.pl
@@ -37,7 +37,6 @@ use POSIX;
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use Net::SNMP;
@@ -368,17 +367,17 @@ sub process_arguments() {
        if ($status == 0){
                print_help();
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if ($opt_V) {
                print_revision($PROGNAME,'@NP_VERSION@');
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if ($opt_h) {
                print_help();
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if (! utils::is_hostname($hostname)){
diff --git a/plugins-scripts/check_ifstatus.pl b/plugins-scripts/check_ifstatus.pl
index 6ec71d1..9f2f7c3 100755
--- a/plugins-scripts/check_ifstatus.pl
+++ b/plugins-scripts/check_ifstatus.pl
@@ -35,7 +35,6 @@ use POSIX;
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use Net::SNMP;
@@ -120,7 +119,7 @@ $status = process_arguments();
 if ($status != 0)
 {
        print_help() ;
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
@@ -314,17 +313,17 @@ sub process_arguments() {
                
        if ($status == 0){
                print_help();
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if ($opt_V) {
                print_revision($PROGNAME,'@NP_VERSION@');
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if ($opt_h) {
                print_help();
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        unless (defined $timeout) {
diff --git a/plugins-scripts/check_ircd.pl b/plugins-scripts/check_ircd.pl
index 6d40cf5..22d21c2 100755
--- a/plugins-scripts/check_ircd.pl
+++ b/plugins-scripts/check_ircd.pl
@@ -51,7 +51,6 @@ use vars qw($opt_V $opt_h $opt_t $opt_p $opt_H $opt_w $opt_c $verbose);
 use vars qw($PROGNAME);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
 # ----------------------------------------------------[ Function Prototypes ]--
@@ -182,10 +181,10 @@ MAIN:
        if ($opt_V) {
                print_revision($PROGNAME,'@NP_VERSION@');
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
-        if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
+        if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
        ($opt_H) || ($opt_H = shift @ARGV) || usage("Host name/address not specified\n");
        my $remotehost = $1 if ($opt_H =~ /([-.A-Za-z0-9]+)/);
diff --git a/plugins-scripts/check_mailq.pl b/plugins-scripts/check_mailq.pl
index 417c4bf..32f498d 100755
--- a/plugins-scripts/check_mailq.pl
+++ b/plugins-scripts/check_mailq.pl
@@ -33,7 +33,6 @@ use vars qw($opt_V $opt_h $opt_v $verbose $PROGNAME $opt_w $opt_c $opt_t $opt_s
                                        %srcdomains %dstdomains);
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw(%ERRORS &print_revision &support &usage );
 my ($sudo);
@@ -574,12 +573,12 @@ sub process_arguments(){
        if ($opt_V) {
                print_revision($PROGNAME,'@NP_VERSION@');
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if ($opt_h) {
                print_help();
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        if (defined $opt_v ){
diff --git a/plugins-scripts/check_mssql.pl b/plugins-scripts/check_mssql.pl
index 1f38788..fb3952d 100755
--- a/plugins-scripts/check_mssql.pl
+++ b/plugins-scripts/check_mssql.pl
@@ -31,7 +31,6 @@ use DBD::Sybase;
 use Getopt::Long;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use strict;
@@ -131,7 +130,7 @@ sub process_arguments {
        if (defined $opt_V) {
                print_revision($PROGNAME,'@NP_VERSION@');
-                exit $ERRORS{'OK'};
+                exit $ERRORS{'UNKNOWN'};
        }
        syntax("Help:") if ($help);
diff --git a/plugins-scripts/check_netdns.pl b/plugins-scripts/check_netdns.pl
index 59c81a9..38538e5 100755
--- a/plugins-scripts/check_netdns.pl
+++ b/plugins-scripts/check_netdns.pl
@@ -29,10 +29,12 @@ use Getopt::Long;
 use Net::DNS;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
+use utils;
-use utils ;
 my $PROGNAME = "check_netdns";
+sub print_help ();
+sub print_version();
+sub print_usage ();
 $ENV{'PATH'}='@TRUSTED_PATH@';
 $ENV{'BASH_ENV'}=''; 
@@ -44,12 +46,12 @@ GetOptions("V" => $opt_V,         "version" => $opt_V,
                                         "t=i" => $opt_t,       "timeout=i" => $opt_t,
                                         "s=s" => $opt_s,       "server=s" => $opt_s,
                                         "H=s" => $opt_H,       "hostname=s" => $opt_H);
-                           
 # -h means display verbose help screen
-if($opt_h){ print_help(); exit 0; }
+if($opt_h){ print_help(); exit 3; }
 # -V means display version number
-if ($opt_V) { print_version(); exit 0; }
+if ($opt_V) { print_version(); exit 3; }
 # -H means host name
 $opt_H = shift unless ($opt_H);
@@ -71,7 +73,7 @@ if ($opt_s) {
                $server = $1;
        } else {
                print "$opt_s is not a valid host name";
-                exit -1;
+                exit 3;
        }
 }
diff --git a/plugins-scripts/check_ntp.pl b/plugins-scripts/check_ntp.pl
deleted file mode 100755
index 13da939..0000000
--- a/plugins-scripts/check_ntp.pl
+++ /dev/null
@@ -1,471 +0,0 @@
-#!@PERL@ -w
-#
-# (c)1999 Ian Cass, Knowledge Matters Ltd.
-# Read the GNU copyright stuff for all the legalese
-#
-# Check NTP time servers plugin. This plugin requires the ntpdate utility to
-# be installed on the system, however since it's part of the ntp suite, you 
-# should already have it installed.
-#
-#
-# Nothing clever done in this program - its a very simple bare basics hack to
-# get the job done.
-#
-# Things to do...
-# check @words[9] for time differences greater than +/- x secs & return a
-# warning.
-#
-# (c) 1999 Mark Jewiss, Knowledge Matters Limited
-# 22-9-1999, 12:45
-#
-# Modified script to accept 2 parameters or set defaults.
-# Now issues warning or critical alert is time difference is greater than the 
-# time passed.
-#
-# These changes have not been tested completely due to the unavailability of a
-# server with the incorrect time.
-#
-# (c) 1999 Bo Kersey, VirCIO - Managed Server Solutions <bo@vircio.com>
-# 22-10-99, 12:17
-#
-# Modified the script to give useage if no parameters are input.
-#
-# Modified the script to check for negative as well as positive 
-# time differences.
-#
-# Modified the script to work with ntpdate 3-5.93e Wed Apr 14 20:23:03 EDT 1999
-#
-# Modified the script to work with ntpdate's that return adjust or offset...
-#
-#
-# Script modified 2000 June 01 by William Pietri <william@bianca.com>
-#
-# Modified script to handle weird cases:
-#     o NTP server doesn't respond (e.g., has died)
-#     o Server has correct time but isn't suitable synchronization
-#           source. This happens while starting up and if contact
-#           with master has been lost.
-#
-# Modifed to run under Embedded Perl  (sghosh@users.sf.net)
-#   - combined logic some blocks together..
-# 
-# Added ntpdate check for stratum 16 desynch peer (James Fidell) Feb 03, 2003
-#
-# ntpdate - offset is in seconds
-# changed ntpdc to ntpq - jitter/dispersion is in milliseconds
-#
-# Patch for for regex for stratum1 refid.
-require 5.004;
-use POSIX;
-use strict;
-use Getopt::Long;
-use vars qw($opt_V $opt_h $opt_H $opt_t $opt_w $opt_c $opt_O $opt_j $opt_k $verbose $PROGNAME $def_jitter $ipv4 $ipv6);
-use lib utils.pm;
-use utils qw($TIMEOUT %ERRORS &print_revision &support);
-$PROGNAME="check_ntp";
-sub print_help ();
-sub print_usage ();
-$ENV{'PATH'}='@TRUSTED_PATH@';
-$ENV{'BASH_ENV'}='';
-$ENV{'ENV'}='';
-# defaults in sec
-my $DEFAULT_OFFSET_WARN =  60;  # 1 minute
-my $DEFAULT_OFFSET_CRIT = 120;  # 2 minutes
-# default in millisec
-my $DEFAULT_JITTER_WARN =   5000; # 5 sec
-my $DEFAULT_JITTER_CRIT =  10000; # 10 sec
-Getopt::Long::Configure('bundling');
-GetOptions
-        ("V"   => \$opt_V, "version"    => \$opt_V,
-         "h"   => \$opt_h, "help"       => \$opt_h,
-         "v"   => \$verbose, "verbose"  => \$verbose,
-         "4"   => \$ipv4, "use-ipv4"    => \$ipv4,
-         "6"   => \$ipv6, "use-ipv6"    => \$ipv6,
-         "w=f" => \$opt_w, "warning=f"  => \$opt_w,   # offset|adjust warning if above this number
-         "c=f" => \$opt_c, "critical=f" => \$opt_c,   # offset|adjust critical if above this number
-         "O"   => \$opt_O, "zero-offset" => \$opt_O,  # zero-offset  bad
-         "j=s" => \$opt_j, "jwarn=i"    => \$opt_j,   # jitter warning if above this number
-         "k=s" => \$opt_k, "jcrit=i"    => \$opt_k,   # jitter critical if above this number
-         "t=s" => \$opt_t, "timeout=i"  => \$opt_t,
-         "H=s" => \$opt_H, "hostname=s" => \$opt_H);
-if ($opt_V) {
-        print_revision($PROGNAME,'@NP_VERSION@');
-        exit $ERRORS{'OK'};
-}
-if ($opt_h) {
-        print_help();
-        exit $ERRORS{'OK'};
-}
-# jitter test params specified
-if (defined $opt_j || defined $opt_k ) {
-        $def_jitter = 1;
-}
-$opt_H = shift unless ($opt_H);
-my $host = $1 if ($opt_H && $opt_H =~ m/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|[a-zA-Z][-a-zA-Z0-9]+(\.[a-zA-Z][-a-zA-Z0-9]+)*)$/);
-unless ($host) {
-        print "No target host specified\n";
-        print_usage();
-        exit $ERRORS{'UNKNOWN'};
-}
-my ($timeout, $owarn, $ocrit, $jwarn, $jcrit);
-$timeout = $TIMEOUT;
-($opt_t) && ($opt_t =~ /^([0-9]+)$/) && ($timeout = $1);
-$owarn = $DEFAULT_OFFSET_WARN;
-($opt_w) && ($opt_w =~ /^([0-9.]+)$/) && ($owarn = $1);
-$ocrit = $DEFAULT_OFFSET_CRIT;
-($opt_c) && ($opt_c =~ /^([0-9.]+)$/) && ($ocrit = $1);
-$jwarn = $DEFAULT_JITTER_WARN;
-($opt_j) && ($opt_j =~ /^([0-9]+)$/) && ($jwarn = $1);
-$jcrit = $DEFAULT_JITTER_CRIT;
-($opt_k) && ($opt_k =~ /^([0-9]+)$/) && ($jcrit = $1);
-if ($ocrit < $owarn ) {
-        print "Critical offset should be larger than warning offset\n";
-        print_usage();
-        exit $ERRORS{"UNKNOWN"};
-}
-if ($def_jitter) {
-        if ($opt_k < $opt_j) {
-                print "Critical jitter should be larger than warning jitter\n";
-                print_usage();
-                exit $ERRORS{'UNKNOWN'};
-        }
-}
-my $stratum = -1;
-my $ignoreret = 0;
-my $answer = undef;
-my $offset = undef;
-my $jitter = undef;
-my $syspeer = undef;
-my $candidate = 0;
-my @candidates;
-my $msg; # first line of output to print if format is invalid
-my $state = $ERRORS{'UNKNOWN'};
-my $ntpdate_error = $ERRORS{'UNKNOWN'};
-my $jitter_error = $ERRORS{'UNKNOWN'};
-# some systems don't have a proper ntpq  (migrated from ntpdc)
-my $have_ntpq = undef;
-if ($utils::PATH_TO_NTPQ && -x $utils::PATH_TO_NTPQ ) {
-        $have_ntpq = 1;  
-}else{
-        $have_ntpq = 0;
-}
-# Just in case of problems, let's not hang Nagios
-$SIG{'ALRM'} = sub {
-        print ("ERROR: No response from ntp server (alarm)\n");
-        exit $ERRORS{"UNKNOWN"};
-};
-alarm($timeout);
-# Determine protocol to be used for ntpdate and ntpq
-my $ntpdate = $utils::PATH_TO_NTPDATE;
-my $ntpq    = $utils::PATH_TO_NTPQ;
-if ($ipv4) {
-        $ntpdate .= " -4";
-        $ntpq .= " -4";
-}
-elsif ($ipv6) {
-        $ntpdate .= " -6";
-        $ntpq .= " -6";
-}
-# else don't use any flags
-###
-###
-### First, check ntpdate
-###
-###
-if (!open (NTPDATE, $ntpdate . " -q $host 2>&1 |")) {
-        print "Could not open $ntpdate: $!\n";
-        exit $ERRORS{"UNKNOWN"};
-}
-my $out;
-while (<NTPDATE>) {
-        #print if ($verbose);  # noop
-        $msg = $_ unless ($msg);
-        $out .= "$_ ";
-        
-        if (/stratum\s(\d+)/) {
-                $stratum = $1;
-        }
-        
-        if (/(offset|adjust)\s+([-.\d]+)/i) {
-                $offset = $2;
-                # An offset of 0.000000 with an error is probably bogus. Actually,
-                # it's probably always bogus, but let's be paranoid here.
-                # Has been reported that 0.0000 happens in a production environment
-                # on Solaris 8 so this check should be taken out - SF tracker 1150777
-                if (defined $opt_O ) {
-                        if ($offset == 0) { undef $offset;}
-                }
-                $ntpdate_error = defined ($offset) ? $ERRORS{"OK"} : $ERRORS{"CRITICAL"};
-                print "ntperr = $ntpdate_error \n" if $verbose;
-        
-        }
-        if (/no server suitable for synchronization found/) {
-                if ($stratum == 16) {
-                        $ntpdate_error = $ERRORS{"WARNING"};
-                        $msg = "Desynchronized peer server found";
-                        $ignoreret=1;
-                }
-                else {
-                        $ntpdate_error = $ERRORS{"CRITICAL"};
-                        $msg = "No suitable peer server found - ";
-                }
-        }
-}
-$out =~ s/\n//g;
-close (NTPDATE) || 
-    die $! ? "$out - Error closing $ntpdate pipe: $!"
-           : "$out - Exit status: $? from $ntpdate\n";
-# declare an error if we also get a non-zero return code from ntpdate
-# unless already set to critical
-if ( $? && !$ignoreret ) {
-        print "stderr = $? : $! \n" if $verbose;
-        $ntpdate_error = $ntpdate_error == $ERRORS{"CRITICAL"} ? $ERRORS{"CRITICAL"} : $ERRORS{"UNKNOWN"}  ;
-        print "ntperr = $ntpdate_error : $!\n" if $verbose;
-}
-###
-###
-### Then scan xntpq/ntpq if it exists
-### and look in the 11th column for jitter 
-###
-# Field 1: Tally Code ( Space, 'x','.','-','+','#','*','o')
-#           Only match for '*' which implies sys.peer 
-#           or 'o' which implies pps.peer
-#           If both exist, the last one is picked. 
-# Field 2: address of the remote peer
-# Field 3: Refid of the clock (0.0.0.0 if unknown, WWWV/PPS/GPS/ACTS/USNO/PCS/... if Stratum1)
-# Field 4: stratum (0-15)
-# Field 5: Type of the peer: local (l), unicast (u), multicast (m) 
-#          broadcast (b); not sure about multicast/broadcast
-# Field 6: last packet receive (in seconds)
-# Field 7: polling interval
-# Field 8: reachability resgister (octal) 
-# Field 9: delay
-# Field 10: offset
-# Field 11: dispersion/jitter
-# 
-# According to bug 773588 Some solaris xntpd implementations seemto match on
-# "#" even though the docs say it exceeds maximum distance. Providing patch
-# here which will generate a warining.
-if ($have_ntpq) {
-        if ( open(NTPQ, $ntpq . " -np $host 2>&1 |") ) {
-                while (<NTPQ>) {
-                        print $_ if ($verbose);
-                        if ( /timed out/ ){
-                                $have_ntpq = 0 ;
-                                last ;
-                        }
-                        # number of candidates on <host> for sys.peer
-                        if (/^(\*|\+|\#|o])/) {
-                                ++$candidate;
-                                push (@candidates, $_);
-                                print "Candidate count= $candidate\n" if ($verbose);
-                        }
-                        
-                        # match sys.peer or pps.peer
-                        if (/^(\*|o)(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/) {
-                                $syspeer = $2;
-                                $stratum = $4;
-                                $jitter = $11;
-                                print "match $_ \n" if $verbose;
-                                if ($jitter > $jcrit) {
-                                        print "Jitter_crit = $11 :$jcrit\n" if ($verbose);
-                                        $jitter_error = $ERRORS{'CRITICAL'};
-                                } elsif ($jitter > $jwarn ) {
-                                        print "Jitter_warn = $11 :$jwarn\n" if ($verbose);
-                                        $jitter_error = $ERRORS{'WARNING'};
-                                } else {
-                                        $jitter_error = $ERRORS{'OK'};
-                                }
-                        } else {
-                                print "No match!\n" if $verbose;
-                                $jitter = '(not parsed)';
-                        }
-                        
-                }
-                close NTPQ ||
-            die $! ? "Error closing $ntpq pipe: $!"
-                   : "Exit status: $? from $ntpq\n";
-                # if we did not match sys.peer or pps.peer but matched # candidates only
-                # generate a warning 
-                # based on bug id 773588
-                unless (defined $syspeer) {
-                        if ($#candidates >=0) {
-                                foreach my $c (@candidates) {
-                                        $c =~ /^(#)([-0-9.\s]+)\s+([-0-9A-Za-z_().]+)\s+([-0-9.]+)\s+([lumb-]+)\s+([-0-9m.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)/;
-                                        $syspeer = $2;
-                                        $stratum = $4;
-                                        $jitter = $11;
-                                        print "candidate match $c \n" if $verbose;
-                                        if ($jitter > $jcrit) {
-                                                print "Candidate match - Jitter_crit = $11 :$jcrit\n" if ($verbose);
-                                                $jitter_error = $ERRORS{'CRITICAL'};
-                                        }elsif ($jitter > $jwarn ) {
-                                                print "Candidate match - Jitter_warn = $11 :$jwarn \n" if ($verbose);
-                                                $jitter_error = $ERRORS{'WARNING'};
-                                        } else {
-                                                $jitter_error = $ERRORS{'WARNING'};
-                                        }
-                                }
-                        }
-                }
-        }
-}
-if ($ntpdate_error != $ERRORS{'OK'}) {
-        $state = $ntpdate_error;
-        if ($ntpdate_error == $ERRORS{'WARNING'} ) {
-                $answer = $msg;
-        }
-        else {
-                $answer = $msg . "Server for ntp probably down";
-        }
-        if (defined($offset) && abs($offset) > $ocrit) {
-                $state = $ERRORS{'CRITICAL'};
-                $answer = "Server Error and offset $offset sec > +/- $ocrit sec";
-        } elsif (defined($offset) && abs($offset) > $owarn) {
-                $answer = "Server error and offset $offset sec > +/- $owarn sec";
-        } elsif (defined($jitter) && abs($jitter) > $jcrit) {
-                $answer = "Server error and jitter $jitter msec > +/- $jcrit msec";
-        } elsif (defined($jitter) && abs($jitter) > $jwarn) {
-                $answer = "Server error and jitter $jitter msec > +/- $jwarn msec";
-        }
-} elsif ($have_ntpq && $jitter_error != $ERRORS{'OK'}) {
-        $state = $jitter_error;
-        $answer = "Jitter $jitter too high";
-        if (defined($offset) && abs($offset) > $ocrit) {
-                $state = $ERRORS{'CRITICAL'};
-                $answer = "Jitter error and offset $offset sec > +/- $ocrit sec";
-        } elsif (defined($offset) && abs($offset) > $owarn) {
-                $answer = "Jitter error and offset $offset sec > +/- $owarn sec";
-        } elsif (defined($jitter) && abs($jitter) > $jcrit) {
-                $answer = "Jitter error and jitter $jitter msec > +/- $jcrit msec";
-        } elsif (defined($jitter) && abs($jitter) > $jwarn) {
-                $answer = "Jitter error and jitter $jitter msec > +/- $jwarn msec";
-        }
-} elsif( !$have_ntpq ) { # no errors from ntpdate and no ntpq or ntpq timed out
-        if (abs($offset) > $ocrit) {
-                $state = $ERRORS{'CRITICAL'};
-                $answer = "Offset $offset sec > +/- $ocrit sec";
-        } elsif (abs($offset) > $owarn) {
-                $state = $ERRORS{'WARNING'};
-                $answer = "Offset $offset sec > +/- $owarn sec";
-        } elsif (( abs($offset) > $owarn) && $def_jitter ) {
-                $state = $ERRORS{'WARNING'};
-                $answer = "Offset $offset sec > +/- $owarn sec, ntpq timed out";
-        } elsif ( $def_jitter ) {
-                $state = $ERRORS{'WARNING'};
-                $answer = "Offset $offset secs, ntpq timed out";
-        } else{
-                $state = $ERRORS{'OK'};
-                $answer = "Offset $offset secs";
-        }
-} else { # no errors from ntpdate or ntpq
-        if (abs($offset) > $ocrit) {
-                $state = $ERRORS{'CRITICAL'};
-                $answer = "Offset $offset sec > +/- $ocrit sec, jitter $jitter msec";
-        } elsif (abs($jitter) > $jcrit ) {
-                $state = $ERRORS{'CRITICAL'};
-                $answer = "Jitter $jitter msec> +/- $jcrit msec, offset $offset sec";
-        } elsif (abs($offset) > $owarn) {
-                $state = $ERRORS{'WARNING'};
-                $answer = "Offset $offset sec > +/- $owarn sec, jitter $jitter msec";
-        } elsif (abs($jitter) > $jwarn ) {
-                $state = $ERRORS{'WARNING'};
-                $answer = "Jitter $jitter msec> +/- $jwarn msec, offset $offset sec";
-        } else {
-                $state = $ERRORS{'OK'};
-                $answer = "Offset $offset secs, jitter $jitter msec, peer is stratum $stratum";
-        }
-        
-}
-foreach my $key (keys %ERRORS) {
-        if ($state==$ERRORS{$key}) {
-#               print ("NTP $key: $answer");
-                print ("NTP $key: $answer|offset=$offset, jitter=" . $jitter/1000 .     ",peer_stratum=$stratum\n");
-                last;
-        }
-}
-exit $state;
-####
-#### subs
-sub print_usage () {
-        print "Usage: $PROGNAME -H <host> [-46] [-O] [-w <warn>] [-c <crit>] [-j <warn>] [-k <crit>] [-v verbose]\n";
-}
-sub print_help () {
-        print_revision($PROGNAME,'@NP_VERSION@');
-        print "Copyright (c) 2003 Bo Kersey/Karl DeBisschop\n";
-        print "\n";
-        print_usage();
-        print "
-Checks the local timestamp offset versus <host> with ntpdate
-Checks the jitter/dispersion of clock signal between <host> and its sys.peer with ntpq\n
-O (--zero-offset)
-     A zero offset on \"ntpdate\" will generate a CRITICAL.\n
-w (--warning)
-     Clock offset in seconds at which a warning message will be generated.\n    Defaults to $DEFAULT_OFFSET_WARN.
-c (--critical) 
-     Clock offset in seconds at which a critical message will be generated.\n   Defaults to $DEFAULT_OFFSET_CRIT.
-j (--jwarn)
-     Clock jitter in milliseconds at which a warning message will be generated.\n       Defaults to $DEFAULT_JITTER_WARN.
-k (--jcrit)
-    Clock jitter in milliseconds at which a critical message will be generated.\n       Defaults to $DEFAULT_JITTER_CRIT.
-    
-    If jitter/dispersion is specified with -j or -k and ntpq times out, then a
-    warning is returned.\n
-4 (--use-ipv4)
-    Use IPv4 connection
-6 (--use-ipv6)
-    Use IPv6 connection
-\n";    
-support();
-}
diff --git a/plugins-scripts/check_rpc.pl b/plugins-scripts/check_rpc.pl
index b1c6147..47d6e49 100755
--- a/plugins-scripts/check_rpc.pl
+++ b/plugins-scripts/check_rpc.pl
@@ -22,7 +22,6 @@
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use vars qw($PROGNAME);
 my ($verbose,@proto,%prognum,$host,$response,$prognum,$port,$cmd,$progver,$state);
@@ -64,12 +63,12 @@ GetOptions(
 );
 # -h means display verbose help screen
-if ($opt_h) { print_help(); exit $ERRORS{'OK'}; }
+if ($opt_h) { print_help(); exit $ERRORS{'UNKNOWN'}; }
 # -V means display version number
 if ($opt_V) {
        print_revision($PROGNAME,'@NP_VERSION@');
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 # Hash containing all RPC program names and numbers
diff --git a/plugins-scripts/check_wave.pl b/plugins-scripts/check_wave.pl
index ee0fda4..41e15f5 100755
--- a/plugins-scripts/check_wave.pl
+++ b/plugins-scripts/check_wave.pl
@@ -5,7 +5,6 @@
 use strict;
 use FindBin;
 use lib "$FindBin::Bin";
-use lib '@libexecdir@';
 use utils qw($TIMEOUT %ERRORS &print_revision &support);
 use vars qw($PROGNAME);
 use Getopt::Long;
@@ -32,12 +31,12 @@ GetOptions
 if ($opt_V) {
        print_revision($PROGNAME,'@NP_VERSION@'); #'
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 if ($opt_h) {
        print_help();
-        exit $ERRORS{'OK'};
+        exit $ERRORS{'UNKNOWN'};
 }
 $opt_H = shift unless ($opt_H);
diff --git a/plugins-scripts/t/check_rpc.t b/plugins-scripts/t/check_rpc.t
index be8ae2f..c58f7bf 100644
--- a/plugins-scripts/t/check_rpc.t
+++ b/plugins-scripts/t/check_rpc.t
@@ -15,7 +15,7 @@ my $successOutput = '/^check_rpc/';
 my $t;
-$t += checkCmd( "./check_rpc -V",   0, $successOutput );
+$t += checkCmd( "./check_rpc -V",   3, $successOutput );
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 41906c5..0ddf9bd 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -71,7 +71,7 @@ check_apt_LDADD = $(BASEOBJS)
 check_cluster_LDADD = $(BASEOBJS)
 check_dbi_LDADD = $(NETLIBS) $(DBILIBS)
 check_dig_LDADD = $(NETLIBS)
-check_disk_LDADD = $(BASEOBJS) $(THREADLIBS)
+check_disk_LDADD = $(BASEOBJS)
 check_dns_LDADD = $(NETLIBS)
 check_dummy_LDADD = $(BASEOBJS)
 check_fping_LDADD = $(NETLIBS)
diff --git a/plugins/check_apt.c b/plugins/check_apt.c
index 8747f90..a639a41 100644
--- a/plugins/check_apt.c
+++ b/plugins/check_apt.c
@@ -160,10 +160,10 @@ int process_arguments (int argc, char **argv) {
                switch(c) {
                case 'h':
                        print_help();
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                case 'V':
                        print_revision(progname, NP_VERSION);
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                case 'v':
                        verbose++;
                        break;
diff --git a/plugins/check_by_ssh.c b/plugins/check_by_ssh.c
index a877f88..13d8bc3 100644
--- a/plugins/check_by_ssh.c
+++ b/plugins/check_by_ssh.c
@@ -100,6 +100,13 @@ main (int argc, char **argv)
        result = cmd_run_array (commargv, &chld_out, &chld_err, 0);
+        if (verbose) {
+                for(i = 0; i < chld_out.lines; i++)
+                        printf("stdout: %s\n", chld_out.line[i]);
+                for(i = 0; i < chld_err.lines; i++)
+                        printf("stderr: %s\n", chld_err.line[i]);
+        }
        if (skip_stdout == -1) /* --skip-stdout specified without argument */
                skip_stdout = chld_out.lines;
        if (skip_stderr == -1) /* --skip-stderr specified without argument */
@@ -209,10 +216,10 @@ process_arguments (int argc, char **argv)
                switch (c) {
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'v':                                                                       /* help */
                        verbose = TRUE;
                        break;
diff --git a/plugins/check_cluster.c b/plugins/check_cluster.c
index cf699e1..b86e501 100644
--- a/plugins/check_cluster.c
+++ b/plugins/check_cluster.c
@@ -200,7 +200,7 @@ int process_arguments(int argc, char **argv){
                case 'V': /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                        break;
                case 'H': /* help */
diff --git a/plugins/check_dbi.c b/plugins/check_dbi.c
index a3d033f..826eb8d 100644
--- a/plugins/check_dbi.c
+++ b/plugins/check_dbi.c
@@ -368,10 +368,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':     /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':     /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'c':     /* critical range */
                        critical_range = optarg;
diff --git a/plugins/check_dig.c b/plugins/check_dig.c
index d899b11..473d4b9 100644
--- a/plugins/check_dig.c
+++ b/plugins/check_dig.c
@@ -125,7 +125,7 @@ main (int argc, char **argv)
        if (verbose)
          printf ("%s\n", chld_out.line[i]);
-        if (strstr (chld_out.line[i], (expected_address == NULL ? query_address : expected_address)) != NULL) {
+        if (strcasestr (chld_out.line[i], (expected_address == NULL ? query_address : expected_address)) != NULL) {
          msg = chld_out.line[i];
          result = STATE_OK;
@@ -223,10 +223,10 @@ process_arguments (int argc, char **argv)
    switch (c) {
    case 'h':                 /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'V':                 /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'H':                 /* hostname */
      host_or_die(optarg);
      dns_server = optarg;
diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index eb573f5..874a0ee 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -51,9 +51,6 @@ const char *email = "devel@monitoring-plugins.org";
 # include <limits.h>
 #endif
 #include "regex.h"
-#if HAVE_PTHREAD_H
-# include <pthread.h>
-#endif
 #ifdef __CYGWIN__
 # include <windows.h>
@@ -133,7 +130,6 @@ void print_help (void);
 void print_usage (void);
 double calculate_percent(uintmax_t, uintmax_t);
 void stat_path (struct parameter_list *p);
-void *do_stat_path (void *p);
 void get_stats (struct parameter_list *p, struct fs_usage *fsp);
 void get_path_stats (struct parameter_list *p, struct fs_usage *fsp);
@@ -766,10 +762,10 @@ process_arguments (int argc, char **argv)
      break;
    case 'V':                 /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'h':                 /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case '?':                 /* help */
      usage (_("Unknown argument"));
    }
@@ -972,44 +968,6 @@ print_usage (void)
 void
 stat_path (struct parameter_list *p)
 {
-#ifdef HAVE_PTHREAD_H
-  pthread_t stat_thread;
-  int statdone = 0;
-  int timer = timeout_interval;
-  struct timespec req, rem;
-  req.tv_sec = 0;
-  pthread_create(&stat_thread, NULL, do_stat_path, p);
-  while (timer-- > 0) {
-    req.tv_nsec = 10000000;
-    nanosleep(&req, &rem);
-    if (pthread_kill(stat_thread, 0)) {
-      statdone = 1;
-      break;
-    } else {
-      req.tv_nsec = 990000000;
-      nanosleep(&req, &rem);
-    }
-  }
-  if (statdone == 1) {
-    pthread_join(stat_thread, NULL);
-  } else {
-    pthread_detach(stat_thread);
-    if (verbose >= 3)
-      printf("stat did not return within %ds on %s\n", timeout_interval, p->name);
-    printf("DISK %s - ", _("CRITICAL"));
-    die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("hangs"), _("Timeout"));
-  }
-#else
-  do_stat_path(p);
-#endif
-}
-void *
-do_stat_path (void *in)
-{
-  struct parameter_list *p = in;
  /* Stat entry to check that dir exists and is accessible */
  if (verbose >= 3)
    printf("calling stat on %s\n", p->name);
@@ -1019,7 +977,6 @@ do_stat_path (void *in)
    printf("DISK %s - ", _("CRITICAL"));
    die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("is not accessible"), strerror(errno));
  }
-  return NULL;
 }
diff --git a/plugins/check_dns.c b/plugins/check_dns.c
index 0316e40..54ce7d1 100644
--- a/plugins/check_dns.c
+++ b/plugins/check_dns.c
@@ -126,7 +126,7 @@ main (int argc, char **argv)
    if (verbose)
      puts(chld_out.line[i]);
-    if (strstr (chld_out.line[i], ".in-addr.arpa")) {
+    if (strcasestr (chld_out.line[i], ".in-addr.arpa")) {
      if ((temp_buffer = strstr (chld_out.line[i], "name = ")))
        addresses[n_addresses++] = strdup (temp_buffer + 7);
      else {
@@ -389,10 +389,10 @@ process_arguments (int argc, char **argv)
    switch (c) {
    case 'h': /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'V': /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'v': /* version */
      verbose = TRUE;
      break;
diff --git a/plugins/check_dummy.c b/plugins/check_dummy.c
index 3ed6871..212a134 100644
--- a/plugins/check_dummy.c
+++ b/plugins/check_dummy.c
@@ -52,11 +52,11 @@ main (int argc, char **argv)
    usage4 (_("Could not parse arguments"));
  else if (strcmp (argv[1], "-V") == 0 || strcmp (argv[1], "--version") == 0) {
    print_revision (progname, NP_VERSION);
-    exit (STATE_OK);
+    exit (STATE_UNKNOWN);
  }
  else if (strcmp (argv[1], "-h") == 0 || strcmp (argv[1], "--help") == 0) {
    print_help ();
-    exit (STATE_OK);
+    exit (STATE_UNKNOWN);
  }
  else if (!is_integer (argv[1]))
    usage4 (_("Arguments to check_dummy must be an integer"));
diff --git a/plugins/check_fping.c b/plugins/check_fping.c
index 46046b4..da1ce1a 100644
--- a/plugins/check_fping.c
+++ b/plugins/check_fping.c
@@ -105,7 +105,7 @@ main (int argc, char **argv)
    xasprintf(&option_string, "%s-I %s ", option_string, sourceif);
 #ifdef PATH_TO_FPING6
-  if (address_family == AF_INET6)
+  if (address_family != AF_INET && is_inet6_addr(server))
    fping_prog = strdup(PATH_TO_FPING6);
  else
    fping_prog = strdup(PATH_TO_FPING);
@@ -314,10 +314,10 @@ process_arguments (int argc, char **argv)
      usage5 ();
    case 'h':                 /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'V':                 /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'v':                 /* verbose mode */
      verbose = TRUE;
      break;
diff --git a/plugins/check_game.c b/plugins/check_game.c
index 29e59e2..709dae1 100644
--- a/plugins/check_game.c
+++ b/plugins/check_game.c
@@ -196,10 +196,10 @@ process_arguments (int argc, char **argv)
    switch (c) {
    case 'h': /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'V': /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
    case 'v': /* version */
      verbose = TRUE;
      break;
diff --git a/plugins/check_hpjd.c b/plugins/check_hpjd.c
index 5fe0698..f159f5a 100644
--- a/plugins/check_hpjd.c
+++ b/plugins/check_hpjd.c
@@ -350,10 +350,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* help */
                        usage5 ();
                }
diff --git a/plugins/check_http.c b/plugins/check_http.c
index 5167997..2038f4a 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -267,11 +267,11 @@ process_arguments (int argc, char **argv)
      break;
    case 'h': /* help */
      print_help ();
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
      break;
    case 'V': /* version */
      print_revision (progname, NP_VERSION);
-      exit (STATE_OK);
+      exit (STATE_UNKNOWN);
      break;
    case 't': /* timeout period */
      if (!is_intnonneg (optarg))
@@ -343,9 +343,20 @@ process_arguments (int argc, char **argv)
         parameters, like -S and -C combinations */
      use_ssl = TRUE;
      if (c=='S' && optarg != NULL) {
-        ssl_version = atoi(optarg);
+        int got_plus = strchr(optarg, '+') != NULL;
-        if (ssl_version < 1 || ssl_version > 3)
-            usage4 (_("Invalid option - Valid values for SSL Version are 1 (TLSv1), 2 (SSLv2) or 3 (SSLv3)"));
+        if (!strncmp (optarg, "1.2", 3))
+          ssl_version = got_plus ? MP_TLSv1_2_OR_NEWER : MP_TLSv1_2;
+        else if (!strncmp (optarg, "1.1", 3))
+          ssl_version = got_plus ? MP_TLSv1_1_OR_NEWER : MP_TLSv1_1;
+        else if (optarg[0] == '1')
+          ssl_version = got_plus ? MP_TLSv1_OR_NEWER : MP_TLSv1;
+        else if (optarg[0] == '3')
+          ssl_version = got_plus ? MP_SSLv3_OR_NEWER : MP_SSLv3;
+        else if (optarg[0] == '2')
+          ssl_version = got_plus ? MP_SSLv2_OR_NEWER : MP_SSLv2;
+        else
+          usage4 (_("Invalid option - Valid SSL/TLS versions: 2, 3, 1, 1.1, 1.2 (with optional '+' suffix)"));
      }
      if (specify_port == FALSE)
        server_port = HTTPS_PORT;
@@ -869,17 +880,42 @@ check_http (void)
  double elapsed_time_transfer = 0.0;
  int page_len = 0;
  int result = STATE_OK;
+  char *force_host_header = NULL;
  /* try to connect to the host at the given port number */
  gettimeofday (&tv_temp, NULL);
  if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
    die (STATE_CRITICAL, _("HTTP CRITICAL - Unable to open TCP socket\n"));
  microsec_connect = deltime (tv_temp);
+    /* if we are called with the -I option, the -j method is CONNECT and */
+    /* we received -S for SSL, then we tunnel the request through a proxy*/
+    /* @20100414, public[at]frank4dd.com, http://www.frank4dd.com/howto  */
+    if ( server_address != NULL && strcmp(http_method, "CONNECT") == 0
+      && host_name != NULL && use_ssl == TRUE) {
+    if (verbose) printf ("Entering CONNECT tunnel mode with proxy %s:%d to dst %s:%d\n", server_address, server_port, host_name, HTTPS_PORT);
+    asprintf (&buf, "%s %s:%d HTTP/1.1\r\n%s\r\n", http_method, host_name, HTTPS_PORT, user_agent);
+    asprintf (&buf, "%sProxy-Connection: keep-alive\r\n", buf);
+    asprintf (&buf, "%sHost: %s\r\n", buf, host_name);
+    /* we finished our request, send empty line with CRLF */
+    asprintf (&buf, "%s%s", buf, CRLF);
+    if (verbose) printf ("%s\n", buf);
+    send(sd, buf, strlen (buf), 0);
+    buf[0]='\0';
+    if (verbose) printf ("Receive response from proxy\n");
+    read (sd, buffer, MAX_INPUT_BUFFER-1);
+    if (verbose) printf ("%s", buffer);
+    /* Here we should check if we got HTTP/1.1 200 Connection established */
+  }
 #ifdef HAVE_SSL
  elapsed_time_connect = (double)microsec_connect / 1.0e6;
  if (use_ssl == TRUE) {
    gettimeofday (&tv_temp, NULL);
    result = np_net_ssl_init_with_hostname_version_and_cert(sd, (use_sni ? host_name : NULL), ssl_version, client_cert, client_privkey);
+    if (verbose) printf ("SSL initialized\n");
    if (result != STATE_OK)
      die (STATE_CRITICAL, NULL);
    microsec_ssl = deltime (tv_temp);
@@ -893,29 +929,51 @@ check_http (void)
  }
 #endif /* HAVE_SSL */
-  xasprintf (&buf, "%s %s %s\r\n%s\r\n", http_method, server_url, host_name ? "HTTP/1.1" : "HTTP/1.0", user_agent);
+  if ( server_address != NULL && strcmp(http_method, "CONNECT") == 0
+       && host_name != NULL && use_ssl == TRUE)
+    asprintf (&buf, "%s %s %s\r\n%s\r\n", "GET", server_url, host_name ? "HTTP/1.1" : "HTTP/1.0", user_agent);
+  else
+    asprintf (&buf, "%s %s %s\r\n%s\r\n", http_method, server_url, host_name ? "HTTP/1.1" : "HTTP/1.0", user_agent);
  /* tell HTTP/1.1 servers not to keep the connection alive */
  xasprintf (&buf, "%sConnection: close\r\n", buf);
+  /* check if Host header is explicitly set in options */
+  if (http_opt_headers_count) {
+    for (i = 0; i < http_opt_headers_count ; i++) {
+      if (strncmp(http_opt_headers[i], "Host:", 5) == 0) {
+        force_host_header = http_opt_headers[i];
+      }
+    }
+  }
  /* optionally send the host header info */
  if (host_name) {
-    /*
+    if (force_host_header) {
-     * Specify the port only if we're using a non-default port (see RFC 2616,
+      xasprintf (&buf, "%s%s\r\n", buf, force_host_header);
-     * 14.23).  Some server applications/configurations cause trouble if the
+    }
-     * (default) port is explicitly specified in the "Host:" header line.
+    else {
-     */
+      /*
-    if ((use_ssl == FALSE && server_port == HTTP_PORT) ||
+       * Specify the port only if we're using a non-default port (see RFC 2616,
-        (use_ssl == TRUE && server_port == HTTPS_PORT))
+       * 14.23).  Some server applications/configurations cause trouble if the
-      xasprintf (&buf, "%sHost: %s\r\n", buf, host_name);
+       * (default) port is explicitly specified in the "Host:" header line.
-    else
+       */
-      xasprintf (&buf, "%sHost: %s:%d\r\n", buf, host_name, server_port);
+      if ((use_ssl == FALSE && server_port == HTTP_PORT) ||
+          (use_ssl == TRUE && server_port == HTTPS_PORT) ||
+          (server_address != NULL && strcmp(http_method, "CONNECT") == 0
+         && host_name != NULL && use_ssl == TRUE))
+        xasprintf (&buf, "%sHost: %s\r\n", buf, host_name);
+      else
+        xasprintf (&buf, "%sHost: %s:%d\r\n", buf, host_name, server_port);
+    }
  }
  /* optionally send any other header tag */
  if (http_opt_headers_count) {
    for (i = 0; i < http_opt_headers_count ; i++) {
-      xasprintf (&buf, "%s%s\r\n", buf, http_opt_headers[i]);
+      if (force_host_header != http_opt_headers[i]) {
+        xasprintf (&buf, "%s%s\r\n", buf, http_opt_headers[i]);
+      }
    }
    /* This cannot be free'd here because a redirection will then try to access this and segfault */
    /* Covered in a testcase in tests/check_http.t */
@@ -1467,9 +1525,10 @@ print_help (void)
  printf (UT_IPv46);
 #ifdef HAVE_SSL
-  printf (" %s\n", "-S, --ssl=VERSION");
+  printf (" %s\n", "-S, --ssl=VERSION[+]");
  printf ("    %s\n", _("Connect via SSL. Port defaults to 443. VERSION is optional, and prevents"));
-  printf ("    %s\n", _("auto-negotiation (1 = TLSv1, 2 = SSLv2, 3 = SSLv3)."));
+  printf ("    %s\n", _("auto-negotiation (2 = SSLv2, 3 = SSLv3, 1 = TLSv1, 1.1 = TLSv1.1,"));
+  printf ("    %s\n", _("1.2 = TLSv1.2). With a '+' suffix, newer versions are also accepted."));
  printf (" %s\n", "--sni");
  printf ("    %s\n", _("Enable SSL/TLS hostname extension support (SNI)"));
  printf (" %s\n", "-C, --certificate=INTEGER[,INTEGER]");
@@ -1496,7 +1555,7 @@ print_help (void)
  printf ("    %s\n", _("URL to GET or POST (default: /)"));
  printf (" %s\n", "-P, --post=STRING");
  printf ("    %s\n", _("URL encoded http POST data"));
-  printf (" %s\n", "-j, --method=STRING  (for example: HEAD, OPTIONS, TRACE, PUT, DELETE)");
+  printf (" %s\n", "-j, --method=STRING  (for example: HEAD, OPTIONS, TRACE, PUT, DELETE, CONNECT)");
  printf ("    %s\n", _("Set HTTP method."));
  printf (" %s\n", "-N, --no-body");
  printf ("    %s\n", _("Don't wait for document body: stop reading after headers."));
@@ -1570,7 +1629,7 @@ print_help (void)
  printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 14 days,"));
  printf (" %s\n", _("a STATE_OK is returned. When the certificate is still valid, but for less than"));
  printf (" %s\n", _("14 days, a STATE_WARNING is returned. A STATE_CRITICAL will be returned when"));
-  printf (" %s\n", _("the certificate is expired."));
+  printf (" %s\n\n", _("the certificate is expired."));
  printf ("\n");
  printf (" %s\n\n", "CHECK CERTIFICATE: check_http -H www.verisign.com -C 30,14");
  printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 30 days,"));
@@ -1578,6 +1637,13 @@ print_help (void)
  printf (" %s\n", _("30 days, but more than 14 days, a STATE_WARNING is returned."));
  printf (" %s\n", _("A STATE_CRITICAL will be returned when certificate expires in less than 14 days"));
+  printf (" %s\n\n", "CHECK SSL WEBSERVER CONTENT VIA PROXY USING HTTP 1.1 CONNECT: ");
+  printf (" %s\n", _("check_http -I 192.168.100.35 -p 80 -u https://www.verisign.com/ -S -j CONNECT -H www.verisign.com "));
+  printf (" %s\n", _("all these options are needed: -I <proxy> -p <proxy-port> -u <check-url> -S(sl) -j CONNECT -H <webserver>"));
+  printf (" %s\n", _("a STATE_OK will be returned. When the server returns its content but exceeds"));
+  printf (" %s\n", _("the 5-second threshold, a STATE_WARNING will be returned. When an error occurs,"));
+  printf (" %s\n", _("a STATE_CRITICAL will be returned."));
 #endif
  printf (UT_SUPPORT);
diff --git a/plugins/check_ide_smart.c b/plugins/check_ide_smart.c
index 47605e9..8d540ca 100644
--- a/plugins/check_ide_smart.c
+++ b/plugins/check_ide_smart.c
@@ -234,10 +234,10 @@ main (int argc, char *argv[])
                        break;
                case 'h':
                        print_help ();
-                        return STATE_OK;
+                        return STATE_UNKNOWN;
                case 'V':
                        print_revision (progname, NP_VERSION);
-                        return STATE_OK;
+                        return STATE_UNKNOWN;
                default:
                        usage5 ();
                }
@@ -249,7 +249,7 @@ main (int argc, char *argv[])
        if (!device) {
                print_help ();
-                return STATE_OK;
+                return STATE_UNKNOWN;
        }
        fd = open (device, OPEN_MODE);
diff --git a/plugins/check_ldap.c b/plugins/check_ldap.c
index c371be9..66be4b4 100644
--- a/plugins/check_ldap.c
+++ b/plugins/check_ldap.c
@@ -1,29 +1,29 @@
 /*****************************************************************************
-* 
+*
 * Monitoring check_ldap plugin
-* 
+*
 * License: GPL
 * Copyright (c) 2000-2008 Monitoring Plugins Development Team
-* 
+*
 * Description:
-* 
+*
 * This file contains the check_ldap plugin
-* 
+*
-* 
+*
 * 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/>.
-* 
+*
-* 
+*
 *****************************************************************************/
 /* progname may be check_ldaps */
@@ -67,7 +67,10 @@ int ld_protocol = DEFAULT_PROTOCOL;
 #endif
 double warn_time = UNDEFINED;
 double crit_time = UNDEFINED;
+thresholds *entries_thresholds = NULL;
 struct timeval tv;
+char* warn_entries = NULL;
+char* crit_entries = NULL;
 int starttls = FALSE;
 int ssl_on_connect = FALSE;
 int verbose = 0;
@@ -94,6 +97,12 @@ main (int argc, char *argv[])
        int tls;
        int version=3;
+        /* for entry counting */
+        LDAPMessage *next_entry;
+        int status_entries = STATE_OK;
+        int num_entries = 0;
        setlocale (LC_ALL, "");
        bindtextdomain (PACKAGE, LOCALEDIR);
        textdomain (PACKAGE);
@@ -197,12 +206,14 @@ main (int argc, char *argv[])
        }
        /* do a search of all objectclasses in the base dn */
-        if (ldap_search_s (ld, ld_base, LDAP_SCOPE_BASE, ld_attr, NULL, 0, &result)
+        if (ldap_search_s (ld, ld_base, (crit_entries!=NULL || warn_entries!=NULL) ? LDAP_SCOPE_SUBTREE : LDAP_SCOPE_BASE, ld_attr, NULL, 0, &result)
                        != LDAP_SUCCESS) {
                if (verbose)
                        ldap_perror(ld, "ldap_search");
                printf (_("Could not search/find objectclasses in %s\n"), ld_base);
                return STATE_CRITICAL;
+        } else if (crit_entries!=NULL || warn_entries!=NULL) {
+                num_entries = ldap_count_entries(ld, result);
        }
        /* unbind from the ldap server */
@@ -223,14 +234,42 @@ main (int argc, char *argv[])
        else
                status = STATE_OK;
+        if(entries_thresholds != NULL) {
+                if (verbose) {
+                        printf ("entries found: %d\n", num_entries);
+                        print_thresholds("entry threasholds", entries_thresholds);
+                }
+                status_entries = get_status(num_entries, entries_thresholds);
+                if (status_entries == STATE_CRITICAL) {
+                        status = STATE_CRITICAL;
+                } else if (status != STATE_CRITICAL) {
+                        status = status_entries;
+                }
+        }
        /* print out the result */
-        printf (_("LDAP %s - %.3f seconds response time|%s\n"),
+        if (crit_entries!=NULL || warn_entries!=NULL) {
-                state_text (status),
+                printf (_("LDAP %s - found %d entries in %.3f seconds|%s %s\n"),
-                elapsed_time,
+                        state_text (status),
-                fperfdata ("time", elapsed_time, "s",
+                        num_entries,
-                          (int)warn_time, warn_time,
+                        elapsed_time,
-                          (int)crit_time, crit_time,
+                        fperfdata ("time", elapsed_time, "s",
-                          TRUE, 0, FALSE, 0));
+                                (int)warn_time, warn_time,
+                                (int)crit_time, crit_time,
+                                TRUE, 0, FALSE, 0),
+                        sperfdata ("entries", (double)num_entries, "",
+                                warn_entries,
+                                crit_entries,
+                                TRUE, 0.0, FALSE, 0.0));
+        } else {
+                printf (_("LDAP %s - %.3f seconds response time|%s\n"),
+                        state_text (status),
+                        elapsed_time,
+                        fperfdata ("time", elapsed_time, "s",
+                                (int)warn_time, warn_time,
+                                (int)crit_time, crit_time,
+                                TRUE, 0, FALSE, 0));
+        }
        return status;
 }
@@ -263,6 +302,8 @@ process_arguments (int argc, char **argv)
                {"port", required_argument, 0, 'p'},
                {"warn", required_argument, 0, 'w'},
                {"crit", required_argument, 0, 'c'},
+                {"warn-entries", required_argument, 0, 'W'},
+                {"crit-entries", required_argument, 0, 'C'},
                {"verbose", no_argument, 0, 'v'},
                {0, 0, 0, 0}
        };
@@ -276,7 +317,7 @@ process_arguments (int argc, char **argv)
        }
        while (1) {
-                c = getopt_long (argc, argv, "hvV234TS6t:c:w:H:b:p:a:D:P:", longopts, &option);
+                c = getopt_long (argc, argv, "hvV234TS6t:c:w:H:b:p:a:D:P:C:W:", longopts, &option);
                if (c == -1 || c == EOF)
                        break;
@@ -284,10 +325,10 @@ process_arguments (int argc, char **argv)
                switch (c) {
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 't':                                                                       /* timeout period */
                        if (!is_intnonneg (optarg))
                                usage2 (_("Timeout interval must be a positive integer"), optarg);
@@ -318,6 +359,12 @@ process_arguments (int argc, char **argv)
                case 'c':
                        crit_time = strtod (optarg, NULL);
                        break;
+                case 'W':
+                        warn_entries = optarg;
+                        break;
+                case 'C':
+                        crit_entries = optarg;
+                        break;
 #ifdef HAVE_LDAP_SET_OPTION
                case '2':
                        ld_protocol = 2;
@@ -381,6 +428,10 @@ validate_arguments ()
        if (ld_base==NULL)
                usage4 (_("Please specify the LDAP base\n"));
+        if (crit_entries!=NULL || warn_entries!=NULL) {
+                set_thresholds(&entries_thresholds,
+                        warn_entries, crit_entries);
+        }
        return OK;
 }
@@ -430,6 +481,11 @@ print_help (void)
        printf (UT_WARN_CRIT);
+  printf (" %s\n", "-W [--warn-entries]");
+  printf ("    %s\n", _("Number of found entries to result in warning status"));
+  printf (" %s\n", "-C [--crit-entries]");
+  printf ("    %s\n", _("Number of found entries to result in critical status"));
        printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
        printf (UT_VERBOSE);
@@ -441,6 +497,7 @@ print_help (void)
        printf (" %s\n", _("'SSL on connect' will be used no matter how the plugin was called."));
        printf (" %s\n", _("This detection is deprecated, please use 'check_ldap' with the '--starttls' or '--ssl' flags"));
        printf (" %s\n", _("to define the behaviour explicitly instead."));
+        printf (" %s\n", _("The parameters --warn-entries and --crit-entries are optional."));
        printf (UT_SUPPORT);
 }
diff --git a/plugins/check_load.c b/plugins/check_load.c
index cde63e5..a96435f 100644
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
@@ -251,10 +251,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* help */
                        usage5 ();
                }
diff --git a/plugins/check_mrtg.c b/plugins/check_mrtg.c
index cf3fe04..1fda549 100644
--- a/plugins/check_mrtg.c
+++ b/plugins/check_mrtg.c
@@ -234,10 +234,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* help */
                        usage5 ();
                }
diff --git a/plugins/check_mrtgtraf.c b/plugins/check_mrtgtraf.c
index 3b038cf..eb66f62 100644
--- a/plugins/check_mrtgtraf.c
+++ b/plugins/check_mrtgtraf.c
@@ -270,10 +270,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* help */
                        usage5 ();
                }
diff --git a/plugins/check_mysql.c b/plugins/check_mysql.c
index 216626b..5773afd 100644
--- a/plugins/check_mysql.c
+++ b/plugins/check_mysql.c
@@ -444,10 +444,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'v':
                        verbose++;
                        break;
diff --git a/plugins/check_mysql_query.c b/plugins/check_mysql_query.c
index 71ab776..49a14dd 100644
--- a/plugins/check_mysql_query.c
+++ b/plugins/check_mysql_query.c
@@ -250,10 +250,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'q':
                        xasprintf(&sql_query, "%s", optarg);
                        break;
diff --git a/plugins/check_nagios.c b/plugins/check_nagios.c
index 791b6db..40d68f0 100644
--- a/plugins/check_nagios.c
+++ b/plugins/check_nagios.c
@@ -235,10 +235,10 @@ process_arguments (int argc, char **argv)
                switch (c) {
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'F':                                                                       /* status log */
                        status_log = optarg;
                        break;
diff --git a/plugins/check_nt.c b/plugins/check_nt.c
index f621b0a..59c135d 100644
--- a/plugins/check_nt.c
+++ b/plugins/check_nt.c
@@ -553,10 +553,10 @@ int process_arguments(int argc, char **argv){
                        usage5 ();
                        case 'h': /* help */
                                print_help();
-                                exit(STATE_OK);
+                                exit(STATE_UNKNOWN);
                        case 'V': /* version */
                                print_revision(progname, NP_VERSION);
-                                exit(STATE_OK);
+                                exit(STATE_UNKNOWN);
                        case 'H': /* hostname */
                                server_address = optarg;
                                break;
diff --git a/plugins/check_ntp.c b/plugins/check_ntp.c
index a7d278d..75efc28 100644
--- a/plugins/check_ntp.c
+++ b/plugins/check_ntp.c
@@ -691,11 +691,11 @@ int process_arguments(int argc, char **argv){
                switch (c) {
                case 'h':
                        print_help();
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'V':
                        print_revision(progname, NP_VERSION);
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'v':
                        verbose++;
diff --git a/plugins/check_ntp_peer.c b/plugins/check_ntp_peer.c
index 44424af..c656b0f 100644
--- a/plugins/check_ntp_peer.c
+++ b/plugins/check_ntp_peer.c
@@ -448,11 +448,11 @@ int process_arguments(int argc, char **argv){
                switch (c) {
                case 'h':
                        print_help();
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'V':
                        print_revision(progname, NP_VERSION);
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'v':
                        verbose++;
diff --git a/plugins/check_ntp_time.c b/plugins/check_ntp_time.c
index e344f8b..295f86f 100644
--- a/plugins/check_ntp_time.c
+++ b/plugins/check_ntp_time.c
@@ -477,11 +477,11 @@ int process_arguments(int argc, char **argv){
                switch (c) {
                case 'h':
                        print_help();
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'V':
                        print_revision(progname, NP_VERSION);
-                        exit(STATE_OK);
+                        exit(STATE_UNKNOWN);
                        break;
                case 'v':
                        verbose++;
diff --git a/plugins/check_nwstat.c b/plugins/check_nwstat.c
index 1a7bfa1..e7e8de0 100644
--- a/plugins/check_nwstat.c
+++ b/plugins/check_nwstat.c
@@ -1354,10 +1354,10 @@ int process_arguments(int argc, char **argv) {
                        usage5 ();
                        case 'h': /* help */
                                print_help();
-                                exit(STATE_OK);
+                                exit(STATE_UNKNOWN);
                        case 'V': /* version */
                                print_revision(progname, NP_VERSION);
-                                exit(STATE_OK);
+                                exit(STATE_UNKNOWN);
                        case 'H': /* hostname */
                                server_address=optarg;
                                break;
diff --git a/plugins/check_overcr.c b/plugins/check_overcr.c
index af5eb9b..9a4d25f 100644
--- a/plugins/check_overcr.c
+++ b/plugins/check_overcr.c
@@ -340,10 +340,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'H':                                                                       /* hostname */
                        server_address = optarg;
                        break;
diff --git a/plugins/check_pgsql.c b/plugins/check_pgsql.c
index 9bad1ec..2eb699e 100644
--- a/plugins/check_pgsql.c
+++ b/plugins/check_pgsql.c
@@ -302,10 +302,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':     /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':     /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 't':     /* timeout period */
                        if (!is_integer (optarg))
                                usage2 (_("Timeout interval must be a positive integer"), optarg);
diff --git a/plugins/check_ping.c b/plugins/check_ping.c
index dbc5c3e..423ecbe 100644
--- a/plugins/check_ping.c
+++ b/plugins/check_ping.c
@@ -224,11 +224,11 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                        break;
                case 'V':       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                        break;
                case 't':       /* timeout period */
                        timeout_interval = atoi (optarg);
diff --git a/plugins/check_procs.c b/plugins/check_procs.c
index 402aac5..4bcc56b 100644
--- a/plugins/check_procs.c
+++ b/plugins/check_procs.c
@@ -428,10 +428,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 't':                                                                       /* timeout period */
                        if (!is_integer (optarg))
                                usage2 (_("Timeout interval must be a positive integer"), optarg);
diff --git a/plugins/check_radius.c b/plugins/check_radius.c
index b294347..03cbb8b 100644
--- a/plugins/check_radius.c
+++ b/plugins/check_radius.c
@@ -259,10 +259,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (OK);
+                        exit (STATE_UNKNOWN);
                case 'v':                                                                       /* verbose mode */
                        verbose = TRUE;
                        break;
diff --git a/plugins/check_real.c b/plugins/check_real.c
index 00bd4d2..6491e6e 100644
--- a/plugins/check_real.c
+++ b/plugins/check_real.c
@@ -359,10 +359,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* usage */
                        usage5 ();
                }
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 2430453..1996c6d 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -231,7 +231,7 @@ main (int argc, char **argv)
                  send(sd, SMTP_STARTTLS, strlen(SMTP_STARTTLS), 0);
                  recvlines(buffer, MAX_INPUT_BUFFER); /* wait for it */
-                  if (!strstr (buffer, server_expect)) {
+                  if (!strstr (buffer, SMTP_EXPECT)) {
                    printf (_("Server does not support STARTTLS\n"));
                    smtp_quit();
                    return STATE_UNKNOWN;
@@ -276,6 +276,7 @@ main (int argc, char **argv)
 #  ifdef USE_OPENSSL
                  if ( check_cert ) {
                    result = np_net_ssl_check_cert(days_till_exp_warn, days_till_exp_crit);
+                    smtp_quit();
                    my_close();
                    return result;
                  }
@@ -581,11 +582,6 @@ process_arguments (int argc, char **argv)
                                usage4 (_("Timeout interval must be a positive integer"));
                        }
                        break;
-                case 'S':
-                /* starttls */
-                        use_ssl = TRUE;
-                        use_ehlo = TRUE;
-                        break;
                case 'D':
                /* Check SSL cert validity */
 #ifdef USE_OPENSSL
@@ -607,9 +603,14 @@ process_arguments (int argc, char **argv)
                            days_till_exp_warn = atoi (optarg);
                        }
                        check_cert = TRUE;
+                        ignore_send_quit_failure = TRUE;
 #else
                        usage (_("SSL support not available - install OpenSSL and recompile"));
 #endif
+                case 'S':
+                /* starttls */
+                        use_ssl = TRUE;
+                        use_ehlo = TRUE;
                        break;
                case '4':
                        address_family = AF_INET;
@@ -623,10 +624,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* help */
                        usage5 ();
                }
diff --git a/plugins/check_snmp.c b/plugins/check_snmp.c
index 9d966fa..da9638c 100644
--- a/plugins/check_snmp.c
+++ b/plugins/check_snmp.c
@@ -41,7 +41,6 @@ const char *email = "devel@monitoring-plugins.org";
 #define DEFAULT_PORT "161"
 #define DEFAULT_MIBLIST "ALL"
 #define DEFAULT_PROTOCOL "1"
-#define DEFAULT_TIMEOUT 1
 #define DEFAULT_RETRIES 5
 #define DEFAULT_AUTH_PROTOCOL "MD5"
 #define DEFAULT_PRIV_PROTOCOL "DES"
@@ -153,7 +152,7 @@ state_data *previous_state;
 double *previous_value;
 size_t previous_size = OID_COUNT_STEP;
 int perf_labels = 1;
+char* ip_version = "";
 static char *fix_snmp_range(char *th)
 {
@@ -227,7 +226,7 @@ main (int argc, char **argv)
        outbuff = strdup ("");
        delimiter = strdup (" = ");
        output_delim = strdup (DEFAULT_OUTPUT_DELIMITER);
-        timeout_interval = DEFAULT_TIMEOUT;
+        timeout_interval = DEFAULT_SOCKET_TIMEOUT;
        retries = DEFAULT_RETRIES;
        np_init( (char *) progname, argc, argv );
@@ -418,6 +417,9 @@ main (int argc, char **argv)
                else if (strstr (response, "INTEGER: ")) {
                        show = strstr (response, "INTEGER: ") + 9;
                }
+                else if (strstr (response, "OID: ")) {
+                        show = strstr (response, "OID: ") + 5;
+                }
                else if (strstr (response, "STRING: ")) {
                        show = strstr (response, "STRING: ") + 8;
                        conv = "%.10g";
@@ -678,6 +680,8 @@ process_arguments (int argc, char **argv)
                {"offset", required_argument, 0, L_OFFSET},
                {"invert-search", no_argument, 0, L_INVERT_SEARCH},
                {"perf-oids", no_argument, 0, 'O'},
+                {"ipv4", no_argument, 0, '4'},
+                {"ipv6", no_argument, 0, '6'},
                {0, 0, 0, 0}
        };
@@ -695,7 +699,7 @@ process_arguments (int argc, char **argv)
        }
        while (1) {
-                c = getopt_long (argc, argv, "nhvVOt:c:w:H:C:o:e:E:d:D:s:t:R:r:l:u:p:m:P:N:L:U:a:x:A:X:",
+                c = getopt_long (argc, argv, "nhvVO46t:c:w:H:C:o:e:E:d:D:s:t:R:r:l:u:p:m:P:N:L:U:a:x:A:X:",
                                                                         longopts, &option);
                if (c == -1 || c == EOF)
@@ -706,10 +710,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'v': /* verbose */
                        verbose++;
                        break;
@@ -920,6 +924,13 @@ process_arguments (int argc, char **argv)
                case 'O':
                        perf_labels=0;
                        break;
+                case '4':
+                        break;
+                case '6':
+                        xasprintf(&ip_version, "udp6:");
+                        if(verbose>2)
+                                printf("IPv6 detected! Will pass \"udp6:\" to snmpget.\n");
+                        break;
                }
        }
@@ -1125,6 +1136,7 @@ print_help (void)
        printf (UT_HELP_VRSN);
        printf (UT_EXTRA_OPTS);
+        printf (UT_IPv46);
        printf (UT_HOST_PORT, 'p', DEFAULT_PORT);
@@ -1243,5 +1255,5 @@ print_usage (void)
        printf ("[-C community] [-s string] [-r regex] [-R regexi] [-t timeout] [-e retries]\n");
        printf ("[-l label] [-u units] [-p port-number] [-d delimiter] [-D output-delimiter]\n");
        printf ("[-m miblist] [-P snmp version] [-N context] [-L seclevel] [-U secname]\n");
-        printf ("[-a authproto] [-A authpasswd] [-x privproto] [-X privpasswd]\n");
+        printf ("[-a authproto] [-A authpasswd] [-x privproto] [-X privpasswd] [-4|6]\n");
 }
diff --git a/plugins/check_ssh.c b/plugins/check_ssh.c
index 3658965..8ccbd5a 100644
--- a/plugins/check_ssh.c
+++ b/plugins/check_ssh.c
@@ -128,10 +128,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'v':                                                                       /* verbose */
                        verbose = TRUE;
                        break;
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index 25e0bac..4d5a407 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -470,10 +470,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case '?':                                                                       /* error */
                        usage5 ();
                }
diff --git a/plugins/check_tcp.c b/plugins/check_tcp.c
index 63f9fd9..6dc9aa9 100644
--- a/plugins/check_tcp.c
+++ b/plugins/check_tcp.c
@@ -237,7 +237,7 @@ main (int argc, char **argv)
        gettimeofday (&tv, NULL);
        result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
-        if (result == STATE_CRITICAL) return STATE_CRITICAL;
+        if (result == STATE_CRITICAL) return econn_refuse_state;
 #ifdef HAVE_SSL
        if (flags & FLAG_SSL){
@@ -463,10 +463,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                 /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                 /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'v':                 /* verbose mode */
                        flags |= FLAG_VERBOSE;
                        match_flags |= NP_MATCH_VERBOSE;
@@ -577,7 +577,8 @@ process_arguments (int argc, char **argv)
                        if ((temp=strchr(optarg,','))!=NULL) {
                            *temp='\0';
                            if (!is_intnonneg (optarg))
-                               usage2 (_("Invalid certificate expiration period"), optarg);                              days_till_exp_warn = atoi(optarg);
+                               usage2 (_("Invalid certificate expiration period"), optarg);
+                            days_till_exp_warn = atoi (optarg);
                            *temp=',';
                            temp++;
                            if (!is_intnonneg (temp))
diff --git a/plugins/check_time.c b/plugins/check_time.c
index 3943742..baf8c59 100644
--- a/plugins/check_time.c
+++ b/plugins/check_time.c
@@ -231,10 +231,10 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'H':                                                                       /* hostname */
                        if (is_host (optarg) == FALSE)
                                usage2 (_("Invalid hostname/address"), optarg);
diff --git a/plugins/check_ups.c b/plugins/check_ups.c
index 099881d..e9e56a5 100644
--- a/plugins/check_ups.c
+++ b/plugins/check_ups.c
@@ -242,8 +242,8 @@ main (int argc, char **argv)
                        }
                        xasprintf (&data, "%s %s", data,
                                  perfdata ("battery", (long)ups_battery_percent, "%",
-                                            check_warn, (long)(1000*warning_value),
+                                            check_warn, (long)(warning_value),
-                                            check_crit, (long)(1000*critical_value),
+                                            check_crit, (long)(critical_value),
                                            TRUE, 0, TRUE, 100));
                } else {
                        xasprintf (&data, "%s %s", data,
@@ -271,8 +271,8 @@ main (int argc, char **argv)
                        }
                        xasprintf (&data, "%s %s", data,
                                  perfdata ("load", (long)ups_load_percent, "%",
-                                            check_warn, (long)(1000*warning_value),
+                                            check_warn, (long)(warning_value),
-                                            check_crit, (long)(1000*critical_value),
+                                            check_crit, (long)(critical_value),
                                            TRUE, 0, TRUE, 100));
                } else {
                        xasprintf (&data, "%s %s", data,
@@ -308,8 +308,8 @@ main (int argc, char **argv)
                        }
                        xasprintf (&data, "%s %s", data,
                                  perfdata ("temp", (long)ups_temperature, tunits,
-                                            check_warn, (long)(1000*warning_value),
+                                            check_warn, (long)(warning_value),
-                                            check_crit, (long)(1000*critical_value),
+                                            check_crit, (long)(critical_value),
                                            TRUE, 0, FALSE, 0));
                } else {
                        xasprintf (&data, "%s %s", data,
@@ -558,10 +558,10 @@ process_arguments (int argc, char **argv)
                        break;
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                }
        }
diff --git a/plugins/check_users.c b/plugins/check_users.c
index a009f20..f6f4b36 100644
--- a/plugins/check_users.c
+++ b/plugins/check_users.c
@@ -54,15 +54,15 @@ int process_arguments (int, char **);
 void print_help (void);
 void print_usage (void);
-int wusers = -1;
+char *warning_range = NULL;
-int cusers = -1;
+char *critical_range = NULL;
+thresholds *thlds = NULL;
 int
 main (int argc, char **argv)
 {
        int users = -1;
        int result = STATE_UNKNOWN;
-        char *perf;
 #if HAVE_WTSAPI32_H
        WTS_SESSION_INFO *wtsinfo;
        DWORD wtscount;
@@ -77,8 +77,6 @@ main (int argc, char **argv)
        bindtextdomain (PACKAGE, LOCALEDIR);
        textdomain (PACKAGE);
-        perf = strdup ("");
        /* Parse extra opts if any */
        argv = np_extra_opts (&argc, argv, progname);
@@ -160,23 +158,15 @@ main (int argc, char **argv)
 #endif
        /* check the user count against warning and critical thresholds */
-        if (users > cusers)
+        result = get_status((double)users, thlds);
-                result = STATE_CRITICAL;
-        else if (users > wusers)
-                result = STATE_WARNING;
-        else if (users >= 0)
-                result = STATE_OK;
        if (result == STATE_UNKNOWN)
                printf ("%s\n", _("Unable to read output"));
        else {
-                xasprintf (&perf, "%s", perfdata ("users", users, "",
+                printf (_("USERS %s - %d users currently logged in |%s\n"), 
-                  TRUE, wusers,
+                                state_text(result), users,
-                  TRUE, cusers,
+                                sperfdata_int("users", users, "", warning_range,
-                  TRUE, 0,
+                                                        critical_range, TRUE, 0, FALSE, 0));
-                  FALSE, 0));
-                printf (_("USERS %s - %d users currently logged in |%s\n"), state_text (result),
-                  users, perf);
        }
        return result;
@@ -210,38 +200,32 @@ process_arguments (int argc, char **argv)
                        usage5 ();
                case 'h':                                                                       /* help */
                        print_help ();
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'V':                                                                       /* version */
                        print_revision (progname, NP_VERSION);
-                        exit (STATE_OK);
+                        exit (STATE_UNKNOWN);
                case 'c':                                                                       /* critical */
-                        if (!is_intnonneg (optarg))
+                        critical_range = optarg;
-                                usage4 (_("Critical threshold must be a positive integer"));
-                        else
-                                cusers = atoi (optarg);
                        break;
                case 'w':                                                                       /* warning */
-                        if (!is_intnonneg (optarg))
+                        warning_range = optarg;
-                                usage4 (_("Warning threshold must be a positive integer"));
-                        else
-                                wusers = atoi (optarg);
                        break;
                }
        }
        c = optind;
-        if (wusers == -1 && argc > c) {
+        if (warning_range == NULL && argc > c)
-                if (is_intnonneg (argv[c]) == FALSE)
+                warning_range = argv[c++];
-                        usage4 (_("Warning threshold must be a positive integer"));
+        if (critical_range == NULL && argc > c)
-                else
+                critical_range = argv[c++];
-                        wusers = atoi (argv[c++]);
-        }
+        /* this will abort in case of invalid ranges */
-        if (cusers == -1 && argc > c) {
+        set_thresholds (&thlds, warning_range, critical_range);
-                if (is_intnonneg (argv[c]) == FALSE)
-                        usage4 (_("Warning threshold must be a positive integer"));
+        if (thlds->warning->end < 0)
-                else
+                usage4 (_("Warning threshold must be a positive integer"));
-                        cusers = atoi (argv[c]);
+        if (thlds->critical->end < 0)
-        }
+                usage4 (_("Critical threshold must be a positive integer"));
        return OK;
 }
diff --git a/plugins/netutils.c b/plugins/netutils.c
index 83f8942..705aaf0 100644
--- a/plugins/netutils.c
+++ b/plugins/netutils.c
@@ -161,6 +161,10 @@ process_request (const char *server_address, int server_port, int proto,
 int
 np_net_connect (const char *host_name, int port, int *sd, int proto)
 {
+        /* send back STATE_UNKOWN if there's an error
+           send back STATE_OK if we connect
+           send back STATE_CRITICAL if we can't connect.
+           Let upstream figure out what to send to the user. */
        struct addrinfo hints;
        struct addrinfo *r, *res;
        struct sockaddr_un su;
@@ -250,16 +254,14 @@ np_net_connect (const char *host_name, int port, int *sd, int proto)
        else if (was_refused) {
                switch (econn_refuse_state) { /* a user-defined expected outcome */
                case STATE_OK:
-                case STATE_WARNING:  /* user wants WARN or OK on refusal */
+                case STATE_WARNING:  /* user wants WARN or OK on refusal, or... */
-                        return econn_refuse_state;
+                case STATE_CRITICAL: /* user did not set econn_refuse_state, or wanted critical */
-                        break;
-                case STATE_CRITICAL: /* user did not set econn_refuse_state */
                        if (is_socket)
                                printf("connect to file socket %s: %s\n", host_name, strerror(errno));
                        else
                                printf("connect to address %s and port %d: %s\n",
                                       host_name, port, strerror(errno));
-                        return econn_refuse_state;
+                        return STATE_CRITICAL;
                        break;
                default: /* it's a logic error if we do not end up in STATE_(OK|WARNING|CRITICAL) */
                        return STATE_UNKNOWN;
diff --git a/plugins/netutils.h b/plugins/netutils.h
index c6fce90..2766029 100644
--- a/plugins/netutils.h
+++ b/plugins/netutils.h
@@ -91,6 +91,16 @@ RETSIGTYPE socket_timeout_alarm_handler (int) __attribute__((noreturn));
 /* SSL-Related functionality */
 #ifdef HAVE_SSL
+#  define MP_SSLv2 1
+#  define MP_SSLv3 2
+#  define MP_TLSv1 3
+#  define MP_TLSv1_1 4
+#  define MP_TLSv1_2 5
+#  define MP_SSLv2_OR_NEWER 6
+#  define MP_SSLv3_OR_NEWER 7
+#  define MP_TLSv1_OR_NEWER 8
+#  define MP_TLSv1_1_OR_NEWER 9
+#  define MP_TLSv1_2_OR_NEWER 10
 /* maybe this could be merged with the above np_net_connect, via some flags */
 int np_net_ssl_init(int sd);
 int np_net_ssl_init_with_hostname(int sd, char *host_name);
diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index d0ae474..b412ef3 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -49,28 +49,78 @@ int np_net_ssl_init_with_hostname_and_version(int sd, char *host_name, int versi
 int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int version, char *cert, char *privkey) {
        SSL_METHOD *method = NULL;
+        long options = 0;
        switch (version) {
-        case 0: /* Deafult to auto negotiation */
+        case MP_SSLv2: /* SSLv2 protocol */
-                method = SSLv23_client_method();
-                break;
-        case 1: /* TLSv1 protocol */
-                method = TLSv1_client_method();
-                break;
-        case 2: /* SSLv2 protocol */
 #if defined(USE_GNUTLS) || defined(OPENSSL_NO_SSL2)
-                printf(("%s\n", _("CRITICAL - SSL protocol version 2 is not supported by your SSL library.")));
+                printf("%s\n", _("UNKNOWN - SSL protocol version 2 is not supported by your SSL library."));
-                return STATE_CRITICAL;
+                return STATE_UNKNOWN;
 #else
                method = SSLv2_client_method();
-#endif
                break;
-        case 3: /* SSLv3 protocol */
+#endif
+        case MP_SSLv3: /* SSLv3 protocol */
+#if defined(OPENSSL_NO_SSL3)
+                printf("%s\n", _("UNKNOWN - SSL protocol version 3 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
                method = SSLv3_client_method();
                break;
-        default: /* Unsupported */
+#endif
-                printf("%s\n", _("CRITICAL - Unsupported SSL protocol version."));
+        case MP_TLSv1: /* TLSv1 protocol */
-                return STATE_CRITICAL;
+#if defined(OPENSSL_NO_TLS1)
+                printf("%s\n", _("UNKNOWN - TLS protocol version 1 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
+                method = TLSv1_client_method();
+                break;
+#endif
+        case MP_TLSv1_1: /* TLSv1.1 protocol */
+#if !defined(SSL_OP_NO_TLSv1_1)
+                printf("%s\n", _("UNKNOWN - TLS protocol version 1.1 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
+                method = TLSv1_1_client_method();
+                break;
+#endif
+        case MP_TLSv1_2: /* TLSv1.2 protocol */
+#if !defined(SSL_OP_NO_TLSv1_2)
+                printf("%s\n", _("UNKNOWN - TLS protocol version 1.2 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
+                method = TLSv1_2_client_method();
+                break;
+#endif
+        case MP_TLSv1_2_OR_NEWER:
+#if !defined(SSL_OP_NO_TLSv1_1)
+                printf("%s\n", _("UNKNOWN - Disabling TLSv1.1 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
+                options |= SSL_OP_NO_TLSv1_1;
+#endif
+                /* FALLTHROUGH */
+        case MP_TLSv1_1_OR_NEWER:
+#if !defined(SSL_OP_NO_TLSv1)
+                printf("%s\n", _("UNKNOWN - Disabling TLSv1 is not supported by your SSL library."));
+                return STATE_UNKNOWN;
+#else
+                options |= SSL_OP_NO_TLSv1;
+#endif
+                /* FALLTHROUGH */
+        case MP_TLSv1_OR_NEWER:
+#if defined(SSL_OP_NO_SSLv3)
+                options |= SSL_OP_NO_SSLv3;
+#endif
+                /* FALLTHROUGH */
+        case MP_SSLv3_OR_NEWER:
+#if defined(SSL_OP_NO_SSLv2)
+                options |= SSL_OP_NO_SSLv2;
+#endif
+        case MP_SSLv2_OR_NEWER:
+                /* FALLTHROUGH */
+        default: /* Default to auto negotiation */
+                method = SSLv23_client_method();
        }
        if (!initialized) {
                /* Initialize SSL context */
@@ -94,8 +144,9 @@ int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int
 #endif
        }
 #ifdef SSL_OP_NO_TICKET
-        SSL_CTX_set_options(c, SSL_OP_NO_TICKET);
+        options |= SSL_OP_NO_TICKET;
 #endif
+        SSL_CTX_set_options(c, options);
        SSL_CTX_set_mode(c, SSL_MODE_AUTO_RETRY);
        if ((s = SSL_new(c)) != NULL) {
 #ifdef SSL_set_tlsext_host_name
@@ -144,7 +195,10 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
 #  ifdef USE_OPENSSL
        X509 *certificate=NULL;
        X509_NAME *subj=NULL;
+        char timestamp[50] = "";
        char cn[MAX_CN_LENGTH]= "";
+        char *tz;
+        
        int cnlen =-1;
        int status=STATE_UNKNOWN;
@@ -153,7 +207,7 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
        struct tm stamp;
        float time_left;
        int days_left;
-        char timestamp[50] = "";
+        int time_remaining;
        time_t tm_t;
        certificate=SSL_get_peer_certificate(s);
@@ -207,32 +261,55 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
                (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
        stamp.tm_min =
                (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
-        stamp.tm_sec = 0;
+        stamp.tm_sec =
+                (tm->data[10 + offset] - '0') * 10 + (tm->data[11 + offset] - '0');
        stamp.tm_isdst = -1;
-        time_left = difftime(timegm(&stamp), time(NULL));
+        tm_t = timegm(&stamp);
+        time_left = difftime(tm_t, time(NULL));
        days_left = time_left / 86400;
-        tm_t = mktime (&stamp);
+        tz = getenv("TZ");
-        strftime(timestamp, 50, "%c", localtime(&tm_t));
+        setenv("TZ", "GMT", 1);
+        tzset();
+        strftime(timestamp, 50, "%c %z", localtime(&tm_t));
+        if (tz)
+                setenv("TZ", tz, 1);
+        else
+                unsetenv("TZ");
+        tzset();
        if (days_left > 0 && days_left <= days_till_exp_warn) {
                printf (_("%s - Certificate '%s' expires in %d day(s) (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, days_left, timestamp);
                if (days_left > days_till_exp_crit)
-                        return STATE_WARNING;
+                        status = STATE_WARNING;
                else
-                        return STATE_CRITICAL;
+                        status = STATE_CRITICAL;
+        } else if (days_left == 0 && time_left > 0) {
+                if (time_left >= 3600)
+                        time_remaining = (int) time_left / 3600;
+                else
+                        time_remaining = (int) time_left / 60;
+                printf (_("%s - Certificate '%s' expires in %u %s (%s)\n"),
+                        (days_left>days_till_exp_crit) ? "WARNING" : "CRITICAL", cn, time_remaining,
+                        time_left >= 3600 ? "hours" : "minutes", timestamp);
+                if ( days_left > days_till_exp_crit)
+                        status = STATE_WARNING;
+                else
+                        status = STATE_CRITICAL;
        } else if (time_left < 0) {
                printf(_("CRITICAL - Certificate '%s' expired on %s.\n"), cn, timestamp);
                status=STATE_CRITICAL;
        } else if (days_left == 0) {
-                printf (_("%s - Certificate '%s' expires today (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, timestamp);
+                printf (_("%s - Certificate '%s' just expired (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, timestamp);
                if (days_left > days_till_exp_crit)
-                        return STATE_WARNING;
+                        status = STATE_WARNING;
                else
-                        return STATE_CRITICAL;
+                        status = STATE_CRITICAL;
        } else {
                printf(_("OK - Certificate '%s' will expire on %s.\n"), cn, timestamp);
-                status=STATE_OK;
+                status = STATE_OK;
        }
        X509_free(certificate);
        return status;
diff --git a/plugins/t/NPTest.cache.travis b/plugins/t/NPTest.cache.travis
index 4ebfb90..fe8aabd 100644
--- a/plugins/t/NPTest.cache.travis
+++ b/plugins/t/NPTest.cache.travis
@@ -17,13 +17,15 @@
  'NP_HOST_HPJD_PORT_INVALID' => '161',
  'NP_HOST_HPJD_PORT_VALID' => '',
  'NP_HOST_TCP_HTTP' => 'localhost',
-  'NP_HOST_TCP_HTTP2' => 'labs.consol.de',
+  'NP_HOST_TCP_HTTP2' => 'test.monitoring-plugins.org',
  'NP_HOST_TCP_IMAP' => 'imap.web.de',
+  'NP_HOST_TCP_LDAP' => 'localhost',
  'NP_HOST_TCP_POP' => 'pop.web.de',
  'NP_HOST_TCP_SMTP' => 'localhost',
  'NP_HOST_TCP_SMTP_NOTLS' => '',
  'NP_HOST_TCP_SMTP_TLS' => '',
  'NP_INTERNET_ACCESS' => 'yes',
+  'NP_LDAP_BASE_DN' => 'cn=admin,dc=nodomain',
  'NP_MOUNTPOINT2_VALID' => '',
  'NP_MOUNTPOINT_VALID' => '/',
  'NP_MYSQL_SERVER' => 'localhost',
diff --git a/plugins/t/check_http.t b/plugins/t/check_http.t
index 2539a28..f514ca6 100644
--- a/plugins/t/check_http.t
+++ b/plugins/t/check_http.t
@@ -6,9 +6,10 @@
 use strict;
 use Test::More;
+use POSIX qw/mktime strftime/;
 use NPTest;
-plan tests => 30;
+plan tests => 42;
 my $successOutput = '/OK.*HTTP.*second/';
@@ -34,6 +35,8 @@ my $host_tcp_http2  = getTestParameter( "NP_HOST_TCP_HTTP2",
            "A host providing an index page containing the string 'monitoring'",
            "test.monitoring-plugins.org" );
+my $faketime = -x '/usr/bin/faketime' ? 1 : 0;
 $res = NPTest->testCmd(
        "./check_http $host_tcp_http -wt 300 -ct 600"
@@ -47,10 +50,10 @@ $res = NPTest->testCmd(
 like( $res->output, '/bob:there\r\ncarl:frown\r\n/', "Got headers with multiple -k options" );
 $res = NPTest->testCmd(
-        "./check_http $host_nonresponsive -wt 1 -ct 2"
+        "./check_http $host_nonresponsive -wt 1 -ct 2 -t 3"
        );
 cmp_ok( $res->return_code, '==', 2, "Webserver $host_nonresponsive not responding" );
-cmp_ok( $res->output, 'eq', "CRITICAL - Socket timeout after 10 seconds", "Output OK");
+cmp_ok( $res->output, 'eq', "CRITICAL - Socket timeout after 3 seconds", "Output OK");
 $res = NPTest->testCmd(
        "./check_http $hostname_invalid -wt 1 -ct 2"
@@ -112,12 +115,46 @@ SKIP: {
        $res = NPTest->testCmd( "./check_http www.verisign.com -C 1" );
        cmp_ok( $res->output, 'eq', $saved_cert_output, "Old syntax for cert checking still works");
+        # run some certificate checks with faketime
+        SKIP: {
+                skip "No faketime binary found", 12 if !$faketime;
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/OK - Certificate 'www.verisign.com' will expire on/, "Catch cert output");
+                is( $res->return_code, 0, "Catch cert output exit code" );
+                my($mon,$day,$hour,$min,$sec,$year) = ($res->output =~ /(\w+)\s+(\d+)\s+(\d+):(\d+):(\d+)\s+(\d+)/);
+                if(!defined $year) {
+                    die("parsing date failed from: ".$res->output);
+                }
+                my $months = {'Jan' => 0, 'Feb' => 1, 'Mar' => 2, 'Apr' => 3, 'May' => 4, 'Jun' => 5, 'Jul' => 6, 'Aug' => 7, 'Sep' => 8, 'Oct' => 9, 'Nov' => 10, 'Dec' => 11};
+                my $ts   = mktime($sec, $min, $hour, $day, $months->{$mon}, $year-1900);
+                my $time = strftime("%Y-%m-%d %H:%M:%S", localtime($ts));
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC faketime -f '".strftime("%Y-%m-%d %H:%M:%S", localtime($ts))."' ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/CRITICAL - Certificate 'www.verisign.com' just expired/, "Output on expire date");
+                is( $res->return_code, 2, "Output on expire date" );
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC faketime -f '".strftime("%Y-%m-%d %H:%M:%S", localtime($ts-1))."' ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/CRITICAL - Certificate 'www.verisign.com' expires in 0 minutes/, "cert expires in 1 second output");
+                is( $res->return_code, 2, "cert expires in 1 second exit code" );
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC faketime -f '".strftime("%Y-%m-%d %H:%M:%S", localtime($ts-120))."' ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/CRITICAL - Certificate 'www.verisign.com' expires in 2 minutes/, "cert expires in 2 minutes output");
+                is( $res->return_code, 2, "cert expires in 2 minutes exit code" );
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC faketime -f '".strftime("%Y-%m-%d %H:%M:%S", localtime($ts-7200))."' ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/CRITICAL - Certificate 'www.verisign.com' expires in 2 hours/, "cert expires in 2 hours output");
+                is( $res->return_code, 2, "cert expires in 2 hours exit code" );
+                $res = NPTest->testCmd("LC_TIME=C TZ=UTC faketime -f '".strftime("%Y-%m-%d %H:%M:%S", localtime($ts+1))."' ./check_http -C 1 www.verisign.com");
+                like($res->output, qr/CRITICAL - Certificate 'www.verisign.com' expired on/, "Certificate expired output");
+                is( $res->return_code, 2, "Certificate expired exit code" );
+        };
        $res = NPTest->testCmd( "./check_http --ssl www.verisign.com -E" );
        like  ( $res->output, '/time_connect=[\d\.]+/', 'Extended Performance Data Output OK' );
        like  ( $res->output, '/time_ssl=[\d\.]+/', 'Extended Performance Data SSL Output OK' );
        $res = NPTest->testCmd(
-                "./check_http --ssl www.e-paycobalt.com"
+                "./check_http --ssl -H www.e-paycobalt.com"
                );
        cmp_ok( $res->return_code, "==", 0, "Can read https for www.e-paycobalt.com (uses AES certificate)" );
diff --git a/plugins/t/check_ldap.t b/plugins/t/check_ldap.t
new file mode 100644
index 0000000..b8944d4
--- /dev/null
+++ b/plugins/t/check_ldap.t
@@ -0,0 +1,80 @@
+#!/usr/bin/env perl -I ..
+#
+# Lightweight Directory Access Protocol (LDAP) Test via check_ldap
+#
+#
+use strict;
+use warnings;
+use Test::More;
+use NPTest;
+my $host_tcp_ldap      = getTestParameter("NP_HOST_TCP_LDAP",
+                                          "A host providing the LDAP Service",
+                                          "localhost" );
+my $ldap_base_dn       = getTestParameter("NP_LDAP_BASE_DN",
+                                          "A base dn for the LDAP Service",
+                                          "cn=admin" );
+my $host_nonresponsive = getTestParameter("host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+                                          "The hostname of system not responsive to network requests" );
+my $hostname_invalid   = getTestParameter("hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                          "An invalid (not known to DNS) hostname" );
+my($result, $cmd);
+my $command = './check_ldap';
+plan tests => 16;
+SKIP: {
+    skip "NP_HOST_NONRESPONSIVE not set", 2 if ! $host_nonresponsive;
+    $result = NPTest->testCmd("$command -H $host_nonresponsive -b ou=blah -t 2 -w 1 -c 1");
+    is( $result->return_code, 2, "$command -H $host_nonresponsive -b ou=blah -t 5 -w 2 -c 3" );
+    is( $result->output, 'CRITICAL - Socket timeout after 2 seconds', "output ok" );
+};
+SKIP: {
+    skip "NP_HOSTNAME_INVALID not set", 2 if ! $hostname_invalid;
+    $result = NPTest->testCmd("$command -H $hostname_invalid -b ou=blah -t 5");
+    is( $result->return_code, 2, "$command -H $hostname_invalid -b ou=blah -t 5" );
+    is( $result->output, 'Could not bind to the LDAP server', "output ok" );
+};
+SKIP: {
+    skip "NP_HOST_TCP_LDAP not set", 12 if ! $host_tcp_ldap;
+    skip "NP_LDAP_BASE_DN not set",  12 if ! $ldap_base_dn;
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 0, $cmd );
+    like( $result->output, '/^LDAP OK - \d+.\d+ seconds response time\|time=\d+\.\d+s;2\.0+;3\.0+;0\.0+$/', "output ok" );
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3 -W 10000000 -C 10000001";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 0, $cmd );
+    like( $result->output, '/^LDAP OK - found \d+ entries in \d+\.\d+ seconds\|time=\d\.\d+s;2\.0+;3\.0+;0\.0+ entries=\d+\.0+;10000000;10000001;0\.0+$/', "output ok" );
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3 -W 10000000: -C 10000001:";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 2, $cmd );
+    like( $result->output, '/^LDAP CRITICAL - found \d+ entries in \d+\.\d+ seconds\|time=\d\.\d+s;2\.0+;3\.0+;0\.0+ entries=\d+\.0+;10000000:;10000001:;0\.0+$/', "output ok" );
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3 -W 0 -C 0";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 2, $cmd );
+    like( $result->output, '/^LDAP CRITICAL - found \d+ entries in \d+\.\d+ seconds\|time=\d\.\d+s;2\.0+;3\.0+;0\.0+ entries=\d+\.0+;0;0;0\.0+$/', "output ok" );
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3 -W 10000000: -C 10000001";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 1, $cmd );
+    like( $result->output, '/^LDAP WARNING - found \d+ entries in \d+\.\d+ seconds\|time=\d\.\d+s;2\.0+;3\.0+;0\.0+ entries=\d+\.0+;10000000:;10000001;0\.0+$/', "output ok" );
+    $cmd = "$command -H $host_tcp_ldap -b $ldap_base_dn -t 5 -w 2 -c 3 -3 -C 10000001";
+    $result = NPTest->testCmd($cmd);
+    is( $result->return_code, 0, $cmd );
+    like( $result->output, '/^LDAP OK - found \d+ entries in \d+\.\d+ seconds\|time=\d\.\d+s;2\.0+;3\.0+;0\.0+ entries=\d+\.0+;;10000001;0\.0+$/', "output ok" );
+};
diff --git a/plugins/t/check_snmp.t b/plugins/t/check_snmp.t
index 2d6c44a..aefd872 100644
--- a/plugins/t/check_snmp.t
+++ b/plugins/t/check_snmp.t
@@ -166,8 +166,8 @@ SKIP: {
 SKIP: {
    skip "no non responsive host defined", 2 if ( ! $host_nonresponsive );
    $res = NPTest->testCmd( "./check_snmp -H $host_nonresponsive -C np_foobar -o system.sysUpTime.0 -w 1: -c 1:");
-    cmp_ok( $res->return_code, '==', 3, "Exit UNKNOWN with non responsive host" );
+    cmp_ok( $res->return_code, '==', 2, "Exit CRITICAL with non responsive host" );
-    like($res->output, '/External command error: Timeout: No Response from /', "String matches timeout problem");
+    like($res->output, '/Plugin timed out while executing system call/', "String matches timeout problem");
 }
 SKIP: {
diff --git a/plugins/t/check_users.t b/plugins/t/check_users.t
index 39044bb..088f3b5 100644
--- a/plugins/t/check_users.t
+++ b/plugins/t/check_users.t
@@ -13,7 +13,7 @@ use Test;
 use NPTest;
 use vars qw($tests);
-BEGIN {$tests = 4; plan tests => $tests}
+BEGIN {$tests = 8; plan tests => $tests}
 my $successOutput = '/^USERS OK - [0-9]+ users currently logged in/';
 my $failureOutput = '/^USERS CRITICAL - [0-9]+ users currently logged in/';
@@ -22,6 +22,8 @@ my $t;
 $t += checkCmd( "./check_users 1000 1000", 0, $successOutput );
 $t += checkCmd( "./check_users    0    0", 2, $failureOutput );
+$t += checkCmd( "./check_users -w 0:1000 -c 0:1000", 0, $successOutput );
+$t += checkCmd( "./check_users -w 0:0 -c 0:0", 2, $failureOutput );
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/tests/check_http.t b/plugins/tests/check_http.t
index d93a0ec..5984d48 100755
--- a/plugins/tests/check_http.t
+++ b/plugins/tests/check_http.t
@@ -186,21 +186,21 @@ SKIP: {
        $result = NPTest->testCmd( "$command -p $port_https -S -C 14" );
        is( $result->return_code, 0, "$command -p $port_https -S -C 14" );
-        is( $result->output, 'OK - Certificate \'Ton Voon\' will expire on Sun Mar  3 21:41:00 2019.', "output ok" );
+        is( $result->output, 'OK - Certificate \'Ton Voon\' will expire on Sun Mar  3 21:41:28 2019 +0000.', "output ok" );
        $result = NPTest->testCmd( "$command -p $port_https -S -C 14000" );
        is( $result->return_code, 1, "$command -p $port_https -S -C 14000" );
-        like( $result->output, '/WARNING - Certificate \'Ton Voon\' expires in \d+ day\(s\) \(Sun Mar  3 21:41:00 2019\)./', "output ok" );
+        like( $result->output, '/WARNING - Certificate \'Ton Voon\' expires in \d+ day\(s\) \(Sun Mar  3 21:41:28 2019 \+0000\)./', "output ok" );
        # Expired cert tests
        $result = NPTest->testCmd( "$command -p $port_https -S -C 13960,14000" );
        is( $result->return_code, 2, "$command -p $port_https -S -C 13960,14000" );
-        like( $result->output, '/CRITICAL - Certificate \'Ton Voon\' expires in \d+ day\(s\) \(Sun Mar  3 21:41:00 2019\)./', "output ok" );
+        like( $result->output, '/CRITICAL - Certificate \'Ton Voon\' expires in \d+ day\(s\) \(Sun Mar  3 21:41:28 2019 \+0000\)./', "output ok" );
        $result = NPTest->testCmd( "$command -p $port_https_expired -S -C 7" );
        is( $result->return_code, 2, "$command -p $port_https_expired -S -C 7" );
        is( $result->output,
-                'CRITICAL - Certificate \'Ton Voon\' expired on Thu Mar  5 00:13:00 2009.',
+                'CRITICAL - Certificate \'Ton Voon\' expired on Thu Mar  5 00:13:16 2009 +0000.',
                "output ok" );
 }
diff --git a/plugins/tests/check_snmp.t b/plugins/tests/check_snmp.t
index 2fd033d..73a68b2 100755
--- a/plugins/tests/check_snmp.t
+++ b/plugins/tests/check_snmp.t
@@ -128,7 +128,7 @@ sleep 1;
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.10 --rate -w 600" );
 is($res->return_code, 1, "WARNING - due to going above rate calculation" );
-is($res->output, "SNMP RATE WARNING - *666* | iso.3.6.1.4.1.8072.3.2.67.10=666 ");
+is($res->output, "SNMP RATE WARNING - *666* | iso.3.6.1.4.1.8072.3.2.67.10=666;600 ");
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.10 --rate -w 600" );
 is($res->return_code, 3, "UNKNOWN - basically the divide by zero error" );
@@ -209,7 +209,7 @@ is($res->output, 'SNMP OK - "stringtests" | ', "OK as inverted string no match"
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.12 -w 4:5" );
 is($res->return_code, 1, "Numeric in string test" );
-is($res->output, 'SNMP WARNING - *3.5* | iso.3.6.1.4.1.8072.3.2.67.12=3.5 ', "WARNING threshold checks for string masquerading as number" );
+is($res->output, 'SNMP WARNING - *3.5* | iso.3.6.1.4.1.8072.3.2.67.12=3.5;4:5 ', "WARNING threshold checks for string masquerading as number" );
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.13" );
 is($res->return_code, 0, "Not really numeric test" );
@@ -225,29 +225,29 @@ is($res->output, 'SNMP OK - "CUSTOM CHECK OK: foo is 12345" | ', "String check w
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.16 -w -2: -c -3:" );
 is($res->return_code, 0, "Negative integer check OK" );
-is($res->output, 'SNMP OK - -2 | iso.3.6.1.4.1.8072.3.2.67.16=-2 ', "Negative integer check OK output" );
+is($res->output, 'SNMP OK - -2 | iso.3.6.1.4.1.8072.3.2.67.16=-2;-2:;-3: ', "Negative integer check OK output" );
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.16 -w -2: -c -3:" );
 is($res->return_code, 1, "Negative integer check WARNING" );
-is($res->output, 'SNMP WARNING - *-3* | iso.3.6.1.4.1.8072.3.2.67.16=-3 ', "Negative integer check WARNING output" );
+is($res->output, 'SNMP WARNING - *-3* | iso.3.6.1.4.1.8072.3.2.67.16=-3;-2:;-3: ', "Negative integer check WARNING output" );
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.16 -w -2: -c -3:" );
 is($res->return_code, 2, "Negative integer check CRITICAL" );
-is($res->output, 'SNMP CRITICAL - *-4* | iso.3.6.1.4.1.8072.3.2.67.16=-4 ', "Negative integer check CRITICAL output" );
+is($res->output, 'SNMP CRITICAL - *-4* | iso.3.6.1.4.1.8072.3.2.67.16=-4;-2:;-3: ', "Negative integer check CRITICAL output" );
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.17 -w -3: -c -6:" );
 is($res->return_code, 1, "Negative integer as string, WARNING" );
-is($res->output, 'SNMP WARNING - *-4* | iso.3.6.1.4.1.8072.3.2.67.17=-4 ', "Negative integer as string, WARNING output" );
+is($res->output, 'SNMP WARNING - *-4* | iso.3.6.1.4.1.8072.3.2.67.17=-4;-3:;-6: ', "Negative integer as string, WARNING output" );
 $res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.17 -w -2: -c -3:" );
 is($res->return_code, 2, "Negative integer as string, CRITICAL" );
-is($res->output, 'SNMP CRITICAL - *-4* | iso.3.6.1.4.1.8072.3.2.67.17=-4 ', "Negative integer as string, CRITICAL output" );
+is($res->output, 'SNMP CRITICAL - *-4* | iso.3.6.1.4.1.8072.3.2.67.17=-4;-2:;-3: ', "Negative integer as string, CRITICAL output" );
-$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -c ~:-6.5" );
+$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -c '~:-6.5'" );
 is($res->return_code, 0, "Negative float OK" );
-is($res->output, 'SNMP OK - -6.6 | iso.3.6.1.4.1.8072.3.2.67.18=-6.6 ', "Negative float OK output" );
+is($res->output, 'SNMP OK - -6.6 | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;;~:-6.5 ', "Negative float OK output" );
-$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -w ~:-6.65 -c ~:-6.55" );
+$res = NPTest->testCmd( "./check_snmp -H 127.0.0.1 -C public -p $port_snmp -o .1.3.6.1.4.1.8072.3.2.67.18 -w '~:-6.65' -c '~:-6.55'" );
 is($res->return_code, 1, "Negative float WARNING" );
-is($res->output, 'SNMP WARNING - *-6.6* | iso.3.6.1.4.1.8072.3.2.67.18=-6.6 ', "Negative float WARNING output" );
+is($res->output, 'SNMP WARNING - *-6.6* | iso.3.6.1.4.1.8072.3.2.67.18=-6.6;~:-6.65;~:-6.55 ', "Negative float WARNING output" );
diff --git a/plugins/utils.c b/plugins/utils.c
index 58b153d..231af92 100644
--- a/plugins/utils.c
+++ b/plugins/utils.c
@@ -144,8 +144,6 @@ usage5 (void)
 void
 print_revision (const char *command_name, const char *revision)
 {
-        char plugin_revision[STRLEN];
        printf ("%s v%s (%s %s)\n",
                 command_name, revision, PACKAGE, VERSION);
 }
@@ -630,3 +628,84 @@ char *fperfdata (const char *label,
        return data;
 }
+char *sperfdata (const char *label,
+ double val,
+ const char *uom,
+ char *warn,
+ char *crit,
+ int minp,
+ double minv,
+ int maxp,
+ double maxv)
+{
+        char *data = NULL;
+        if (strpbrk (label, "'= "))
+                xasprintf (&data, "'%s'=", label);
+        else
+                xasprintf (&data, "%s=", label);
+        xasprintf (&data, "%s%f", data, val);
+        xasprintf (&data, "%s%s;", data, uom);
+        if (warn!=NULL)
+                xasprintf (&data, "%s%s", data, warn);
+        xasprintf (&data, "%s;", data);
+        if (crit!=NULL)
+                xasprintf (&data, "%s%s", data, crit);
+        xasprintf (&data, "%s;", data);
+        if (minp)
+                xasprintf (&data, "%s%f", data, minv);
+        if (maxp) {
+                xasprintf (&data, "%s;", data);
+                xasprintf (&data, "%s%f", data, maxv);
+        }
+        return data;
+}
+char *sperfdata_int (const char *label,
+ int val,
+ const char *uom,
+ char *warn,
+ char *crit,
+ int minp,
+ int minv,
+ int maxp,
+ int maxv)
+{
+        char *data = NULL;
+        if (strpbrk (label, "'= "))
+                xasprintf (&data, "'%s'=", label);
+        else
+                xasprintf (&data, "%s=", label);
+        xasprintf (&data, "%s%d", data, val);
+        xasprintf (&data, "%s%s;", data, uom);
+        if (warn!=NULL)
+                xasprintf (&data, "%s%s", data, warn);
+        xasprintf (&data, "%s;", data);
+        if (crit!=NULL)
+                xasprintf (&data, "%s%s", data, crit);
+        xasprintf (&data, "%s;", data);
+        if (minp)
+                xasprintf (&data, "%s%d", data, minv);
+        if (maxp) {
+                xasprintf (&data, "%s;", data);
+                xasprintf (&data, "%s%d", data, maxv);
+        }
+        return data;
+}
diff --git a/plugins/utils.h b/plugins/utils.h
index 4c4aacc..a436e1c 100644
--- a/plugins/utils.h
+++ b/plugins/utils.h
@@ -94,29 +94,17 @@ const char *state_text (int);
 #define max(a,b) (((a)>(b))?(a):(b))
 #define min(a,b) (((a)<(b))?(a):(b))
-char *perfdata (const char *,
+char *perfdata (const char *, long int, const char *, int, long int,
- long int,
+                int, long int, int, long int, int, long int);
- const char *,
- int,
+char *fperfdata (const char *, double, const char *, int, double,
- long int,
+                 int, double, int, double, int, double);
- int,
- long int,
+char *sperfdata (const char *, double, const char *, char *, char *,
- int,
+                 int, double, int, double);
- long int,
- int,
+char *sperfdata_int (const char *, int, const char *, char *, char *,
- long int);
+                     int, int, int, int);
-char *fperfdata (const char *,
- double,
- const char *,
- int,
- double,
- int,
- double,
- int,
- double,
- int,
- double);
 /* The idea here is that, although not every plugin will use all of these, 
   most will or should.  Therefore, for consistency, these very common 
diff --git a/tools/update-thanks b/tools/update-thanks
new file mode 100755
index 0000000..27932f9
--- /dev/null
+++ b/tools/update-thanks
@@ -0,0 +1,56 @@
+#!/bin/sh
+# Copyright (c) 2014 Monitoring Plugins Development Team
+#
+# Originally written by Holger Weiss <holger@zedat.fu-berlin.de>.
+#
+# This file is free software; the Monitoring Plugins Development Team gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY, to the extent permitted by law; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+set -e
+set -u
+tempfile=$(mktemp '/tmp/.plugins.XXXXXX')
+trap 'rm -f $tempfile' EXIT INT TERM
+if [ ! -e THANKS.in ]
+then
+        echo >&2 'Please change into the "monitoring-plugins" repository.'
+        exit 2
+fi
+case $# in
+        1) since=$1; git cat-file -e "$since";;
+        0) since=$(git tag -l 'v*' | tail -n 1);;
+        *) echo >&2 "Usage: $0 [<since>]"; exit 2;;
+esac
+git log --pretty='%an' "$since.." | sort -u | while read first last rest
+do
+        if [ -n "$first" -a -n "$last" -a -z "$rest" ]
+        then
+                if ! grep -q "^$first $last$" AUTHORS THANKS.in
+                then
+                        echo "$first $last" >> THANKS.in
+                fi
+        else
+                echo "$first $last $rest" | sed 's/ *$//' >> "$tempfile"
+        fi
+done
+if ! git diff --quiet THANKS.in
+then
+        echo 'Please check/commit the changes in the THANKS.in file.'
+fi
+if [ -s "$tempfile" ]
+then
+        echo 'The following authors were NOT added to the THANKS.in file:'
+        echo
+        cat "$tempfile"
+fi