diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0001-pkexec-local-privilege-escalation-CVE-2021-4034.patch b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0001-pkexec-local-privilege-escalation-CVE-2021-4034.patch
new file mode 100644
index 0000000..c725c00
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0001-pkexec-local-privilege-escalation-CVE-2021-4034.patch
@@ -0,0 +1,84 @@
+From 85c2dd9275cdfb369f613089f22733c0f1ba2aec Mon Sep 17 00:00:00 2001
+From: Jan Rybar <jrybar@redhat.com>
+Date: Tue, 25 Jan 2022 17:21:46 +0000
+Subject: [PATCH 1/3] pkexec: local privilege escalation (CVE-2021-4034)
+
+Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>
+
+---
+ src/programs/pkcheck.c |  5 +++++
+ src/programs/pkexec.c  | 23 ++++++++++++++++++++---
+ 2 files changed, 25 insertions(+), 3 deletions(-)
+
+CVE: CVE-2021-4034
+Upstream-Status: Backport [a2bf5c9c83b6ae46cbd5c779d3055bff81ded683]
+
+diff --git a/src/programs/pkcheck.c b/src/programs/pkcheck.c
+index f1bb4e1..768525c 100644
+--- a/src/programs/pkcheck.c
++++ b/src/programs/pkcheck.c
+@@ -363,6 +363,11 @@ main (int argc, char *argv[])
+   local_agent_handle = NULL;
+   ret = 126;
+ 
++  if (argc < 1)
++    {
++      exit(126);
++    }
++
+   /* Disable remote file access from GIO. */
+   setenv ("GIO_USE_VFS", "local", 1);
+ 
+diff --git a/src/programs/pkexec.c b/src/programs/pkexec.c
+index 7698c5c..84e5ef6 100644
+--- a/src/programs/pkexec.c
++++ b/src/programs/pkexec.c
+@@ -488,6 +488,15 @@ main (int argc, char *argv[])
+   pid_t pid_of_caller;
+   gpointer local_agent_handle;
+ 
++
++  /*
++   * If 'pkexec' is called THIS wrong, someone's probably evil-doing. Don't be nice, just bail out.
++   */
++  if (argc<1)
++    {
++      exit(127);
++    }
++
+   ret = 127;
+   authority = NULL;
+   subject = NULL;
+@@ -614,10 +623,10 @@ main (int argc, char *argv[])
+ 
+       path = g_strdup (pwstruct.pw_shell);
+       if (!path)
+-	{
++        {
+           g_printerr ("No shell configured or error retrieving pw_shell\n");
+           goto out;
+-	}
++        }
+       /* If you change this, be sure to change the if (!command_line)
+ 	 case below too */
+       command_line = g_strdup (path);
+@@ -636,7 +645,15 @@ main (int argc, char *argv[])
+           goto out;
+         }
+       g_free (path);
+-      argv[n] = path = s;
++      path = s;
++
++      /* argc<2 and pkexec runs just shell, argv is guaranteed to be null-terminated.
++       * /-less shell shouldn't happen, but let's be defensive and don't write to null-termination
++       */
++      if (argv[n] != NULL)
++      {
++        argv[n] = path;
++      }
+     }
+   if (access (path, F_OK) != 0)
+     {
+-- 
+2.20.1
+
diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-CVE-2021-4115-GHSL-2021-077-fix.patch b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-CVE-2021-4115-GHSL-2021-077-fix.patch
new file mode 100644
index 0000000..fcad872
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-CVE-2021-4115-GHSL-2021-077-fix.patch
@@ -0,0 +1,88 @@
+From c86aea01a06ad4d6c428137e9cfe2f74b1ae7f01 Mon Sep 17 00:00:00 2001
+From: Jan Rybar <jrybar@redhat.com>
+Date: Mon, 21 Feb 2022 08:29:05 +0000
+Subject: [PATCH 2/3] CVE-2021-4115 (GHSL-2021-077) fix
+
+Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>
+
+---
+ src/polkit/polkitsystembusname.c | 38 ++++++++++++++++++++++++++++----
+ 1 file changed, 34 insertions(+), 4 deletions(-)
+
+CVE: CVE-2021-4115
+Upstream-Status: Backport [41cb093f554da8772362654a128a84dd8a5542a7]
+
+diff --git a/src/polkit/polkitsystembusname.c b/src/polkit/polkitsystembusname.c
+index 8ed1363..2fbf5f1 100644
+--- a/src/polkit/polkitsystembusname.c
++++ b/src/polkit/polkitsystembusname.c
+@@ -62,6 +62,10 @@ enum
+   PROP_NAME,
+ };
+ 
++
++guint8 dbus_call_respond_fails;      // has to be global because of callback
++
++
+ static void subject_iface_init (PolkitSubjectIface *subject_iface);
+ 
+ G_DEFINE_TYPE_WITH_CODE (PolkitSystemBusName, polkit_system_bus_name, G_TYPE_OBJECT,
+@@ -364,6 +368,7 @@ on_retrieved_unix_uid_pid (GObject              *src,
+   if (!v)
+     {
+       data->caught_error = TRUE;
++      dbus_call_respond_fails += 1;
+     }
+   else
+     {
+@@ -405,6 +410,8 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName           *system_bus
+   tmp_context = g_main_context_new ();
+   g_main_context_push_thread_default (tmp_context);
+ 
++  dbus_call_respond_fails = 0;
++
+   /* Do two async calls as it's basically as fast as one sync call.
+    */
+   g_dbus_connection_call (connection,
+@@ -432,11 +439,34 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName           *system_bus
+ 			  on_retrieved_unix_uid_pid,
+ 			  &data);
+ 
+-  while (!((data.retrieved_uid && data.retrieved_pid) || data.caught_error))
+-    g_main_context_iteration (tmp_context, TRUE);
++  while (TRUE)
++  {
++    /* If one dbus call returns error, we must wait until the other call
++     * calls _call_finish(), otherwise fd leak is possible.
++     * Resolves: GHSL-2021-077
++    */
+ 
+-  if (data.caught_error)
+-    goto out;
++    if ( (dbus_call_respond_fails > 1) )
++    {
++      // we got two faults, we can leave
++      goto out;
++    }
++
++    if ((data.caught_error && (data.retrieved_pid || data.retrieved_uid)))
++    {
++      // we got one fault and the other call finally finished, we can leave
++      goto out;
++    }
++
++    if ( !(data.retrieved_uid && data.retrieved_pid) )
++    {
++      g_main_context_iteration (tmp_context, TRUE);
++    }
++    else
++    {
++      break;
++    }
++  }
+ 
+   if (out_uid)
+     *out_uid = data.uid;
+-- 
+2.20.1
+
diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-jsauthority-port-to-mozjs-91.patch b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-jsauthority-port-to-mozjs-91.patch
deleted file mode 100644
index 5b3660d..0000000
--- a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0002-jsauthority-port-to-mozjs-91.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From 4ce27b66bb07b72cb96d3d43a75108a5a6e7e156 Mon Sep 17 00:00:00 2001
-From: Xi Ruoyao <xry111@mengyan1223.wang>
-Date: Tue, 10 Aug 2021 19:09:42 +0800
-Subject: [PATCH] jsauthority: port to mozjs-91
-
-Upstream-Status: Submitted [https://gitlab.freedesktop.org/polkit/polkit/-/merge_requests/92]
-Signed-off-by: Alexander Kanavin <alex@linutronix.de>
----
- configure.ac | 2 +-
- meson.build  | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/configure.ac b/configure.ac
-index d807086..5a7fc11 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -80,7 +80,7 @@ PKG_CHECK_MODULES(GLIB, [gmodule-2.0 gio-unix-2.0 >= 2.30.0])
- AC_SUBST(GLIB_CFLAGS)
- AC_SUBST(GLIB_LIBS)
- 
--PKG_CHECK_MODULES(LIBJS, [mozjs-78])
-+PKG_CHECK_MODULES(LIBJS, [mozjs-91])
- 
- AC_SUBST(LIBJS_CFLAGS)
- AC_SUBST(LIBJS_CXXFLAGS)
-diff --git a/meson.build b/meson.build
-index b3702be..733bbff 100644
---- a/meson.build
-+++ b/meson.build
-@@ -126,7 +126,7 @@ expat_dep = dependency('expat')
- assert(cc.has_header('expat.h', dependencies: expat_dep), 'Can\'t find expat.h. Please install expat.')
- assert(cc.has_function('XML_ParserCreate', dependencies: expat_dep), 'Can\'t find expat library. Please install expat.')
- 
--mozjs_dep = dependency('mozjs-78')
-+mozjs_dep = dependency('mozjs-91')
- 
- dbus_dep = dependency('dbus-1')
- dbus_confdir = dbus_dep.get_pkgconfig_variable('datadir', define_variable: ['datadir', pk_prefix / pk_datadir])   #changed from sysconfdir with respect to commit#8eada3836465838
diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-Added-support-for-duktape-as-JS-engine.patch b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-Added-support-for-duktape-as-JS-engine.patch
new file mode 100644
index 0000000..e44e4f6
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-Added-support-for-duktape-as-JS-engine.patch
@@ -0,0 +1,3463 @@
+From eaecfb21e1bca42e99321cc731e21dbfc1ea0d0c Mon Sep 17 00:00:00 2001
+From: Gustavo Lima Chaves <limachaves@gmail.com>
+Date: Tue, 25 Jan 2022 09:43:21 +0000
+Subject: [PATCH 3/3] Added support for duktape as JS engine
+
+Original author: Wu Xiaotian (@yetist)
+Resurrection author, runaway-killer author: Gustavo Lima Chaves (@limachaves)
+
+Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>
+
+---
+ .gitlab-ci.yml                                |    1 +
+ buildutil/ax_pthread.m4                       |  522 ++++++++
+ configure.ac                                  |   34 +-
+ docs/man/polkit.xml                           |    4 +-
+ meson.build                                   |   16 +-
+ meson_options.txt                             |    1 +
+ src/polkitbackend/Makefile.am                 |   17 +-
+ src/polkitbackend/meson.build                 |   14 +-
+ src/polkitbackend/polkitbackendcommon.c       |  530 +++++++++
+ src/polkitbackend/polkitbackendcommon.h       |  158 +++
+ .../polkitbackendduktapeauthority.c           | 1051 +++++++++++++++++
+ .../polkitbackendjsauthority.cpp              |  721 +----------
+ .../etc/polkit-1/rules.d/10-testing.rules     |    6 +-
+ .../test-polkitbackendjsauthority.c           |    2 +-
+ 14 files changed, 2399 insertions(+), 678 deletions(-)
+ create mode 100644 buildutil/ax_pthread.m4
+ create mode 100644 src/polkitbackend/polkitbackendcommon.c
+ create mode 100644 src/polkitbackend/polkitbackendcommon.h
+ create mode 100644 src/polkitbackend/polkitbackendduktapeauthority.c
+
+Upstream-Status: Backport [c7fc4e1b61f0fd82fc697c19c604af7e9fb291a2]
+Dropped change to .gitlab-ci.yml and adapted configure.ac due to other
+patches in meta-oe.
+
+diff --git a/buildutil/ax_pthread.m4 b/buildutil/ax_pthread.m4
+new file mode 100644
+index 0000000..9f35d13
+--- /dev/null
++++ b/buildutil/ax_pthread.m4
+@@ -0,0 +1,522 @@
++# ===========================================================================
++#        https://www.gnu.org/software/autoconf-archive/ax_pthread.html
++# ===========================================================================
++#
++# SYNOPSIS
++#
++#   AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
++#
++# DESCRIPTION
++#
++#   This macro figures out how to build C programs using POSIX threads. It
++#   sets the PTHREAD_LIBS output variable to the threads library and linker
++#   flags, and the PTHREAD_CFLAGS output variable to any special C compiler
++#   flags that are needed. (The user can also force certain compiler
++#   flags/libs to be tested by setting these environment variables.)
++#
++#   Also sets PTHREAD_CC and PTHREAD_CXX to any special C compiler that is
++#   needed for multi-threaded programs (defaults to the value of CC
++#   respectively CXX otherwise). (This is necessary on e.g. AIX to use the
++#   special cc_r/CC_r compiler alias.)
++#
++#   NOTE: You are assumed to not only compile your program with these flags,
++#   but also to link with them as well. For example, you might link with
++#   $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
++#   $PTHREAD_CXX $CXXFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
++#
++#   If you are only building threaded programs, you may wish to use these
++#   variables in your default LIBS, CFLAGS, and CC:
++#
++#     LIBS="$PTHREAD_LIBS $LIBS"
++#     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
++#     CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
++#     CC="$PTHREAD_CC"
++#     CXX="$PTHREAD_CXX"
++#
++#   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
++#   has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
++#   that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
++#
++#   Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
++#   PTHREAD_PRIO_INHERIT symbol is defined when compiling with
++#   PTHREAD_CFLAGS.
++#
++#   ACTION-IF-FOUND is a list of shell commands to run if a threads library
++#   is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
++#   is not found. If ACTION-IF-FOUND is not specified, the default action
++#   will define HAVE_PTHREAD.
++#
++#   Please let the authors know if this macro fails on any platform, or if
++#   you have any other suggestions or comments. This macro was based on work
++#   by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
++#   from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
++#   Alejandro Forero Cuervo to the autoconf macro repository. We are also
++#   grateful for the helpful feedback of numerous users.
++#
++#   Updated for Autoconf 2.68 by Daniel Richard G.
++#
++# LICENSE
++#
++#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
++#   Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
++#   Copyright (c) 2019 Marc Stevens <marc.stevens@cwi.nl>
++#
++#   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 <https://www.gnu.org/licenses/>.
++#
++#   As a special exception, the respective Autoconf Macro's copyright owner
++#   gives unlimited permission to copy, distribute and modify the configure
++#   scripts that are the output of Autoconf when processing the Macro. You
++#   need not follow the terms of the GNU General Public License when using
++#   or distributing such scripts, even though portions of the text of the
++#   Macro appear in them. The GNU General Public License (GPL) does govern
++#   all other use of the material that constitutes the Autoconf Macro.
++#
++#   This special exception to the GPL applies to versions of the Autoconf
++#   Macro released by the Autoconf Archive. When you make and distribute a
++#   modified version of the Autoconf Macro, you may extend this special
++#   exception to the GPL to apply to your modified version as well.
++
++#serial 31
++
++AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
++AC_DEFUN([AX_PTHREAD], [
++AC_REQUIRE([AC_CANONICAL_HOST])
++AC_REQUIRE([AC_PROG_CC])
++AC_REQUIRE([AC_PROG_SED])
++AC_LANG_PUSH([C])
++ax_pthread_ok=no
++
++# We used to check for pthread.h first, but this fails if pthread.h
++# requires special compiler flags (e.g. on Tru64 or Sequent).
++# It gets checked for in the link test anyway.
++
++# First of all, check if the user has set any of the PTHREAD_LIBS,
++# etcetera environment variables, and if threads linking works using
++# them:
++if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
++        ax_pthread_save_CC="$CC"
++        ax_pthread_save_CFLAGS="$CFLAGS"
++        ax_pthread_save_LIBS="$LIBS"
++        AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
++        AS_IF([test "x$PTHREAD_CXX" != "x"], [CXX="$PTHREAD_CXX"])
++        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
++        LIBS="$PTHREAD_LIBS $LIBS"
++        AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
++        AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
++        AC_MSG_RESULT([$ax_pthread_ok])
++        if test "x$ax_pthread_ok" = "xno"; then
++                PTHREAD_LIBS=""
++                PTHREAD_CFLAGS=""
++        fi
++        CC="$ax_pthread_save_CC"
++        CFLAGS="$ax_pthread_save_CFLAGS"
++        LIBS="$ax_pthread_save_LIBS"
++fi
++
++# We must check for the threads library under a number of different
++# names; the ordering is very important because some systems
++# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
++# libraries is broken (non-POSIX).
++
++# Create a list of thread flags to try. Items with a "," contain both
++# C compiler flags (before ",") and linker flags (after ","). Other items
++# starting with a "-" are C compiler flags, and remaining items are
++# library names, except for "none" which indicates that we try without
++# any flags at all, and "pthread-config" which is a program returning
++# the flags for the Pth emulation library.
++
++ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
++
++# The ordering *is* (sometimes) important.  Some notes on the
++# individual items follow:
++
++# pthreads: AIX (must check this before -lpthread)
++# none: in case threads are in libc; should be tried before -Kthread and
++#       other compiler flags to prevent continual compiler warnings
++# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
++# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
++#           (Note: HP C rejects this with "bad form for `-t' option")
++# -pthreads: Solaris/gcc (Note: HP C also rejects)
++# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
++#      doesn't hurt to check since this sometimes defines pthreads and
++#      -D_REENTRANT too), HP C (must be checked before -lpthread, which
++#      is present but should not be used directly; and before -mthreads,
++#      because the compiler interprets this as "-mt" + "-hreads")
++# -mthreads: Mingw32/gcc, Lynx/gcc
++# pthread: Linux, etcetera
++# --thread-safe: KAI C++
++# pthread-config: use pthread-config program (for GNU Pth library)
++
++case $host_os in
++
++        freebsd*)
++
++        # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
++        # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
++
++        ax_pthread_flags="-kthread lthread $ax_pthread_flags"
++        ;;
++
++        hpux*)
++
++        # From the cc(1) man page: "[-mt] Sets various -D flags to enable
++        # multi-threading and also sets -lpthread."
++
++        ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
++        ;;
++
++        openedition*)
++
++        # IBM z/OS requires a feature-test macro to be defined in order to
++        # enable POSIX threads at all, so give the user a hint if this is
++        # not set. (We don't define these ourselves, as they can affect
++        # other portions of the system API in unpredictable ways.)
++
++        AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
++            [
++#            if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
++             AX_PTHREAD_ZOS_MISSING
++#            endif
++            ],
++            [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
++        ;;
++
++        solaris*)
++
++        # On Solaris (at least, for some versions), libc contains stubbed
++        # (non-functional) versions of the pthreads routines, so link-based
++        # tests will erroneously succeed. (N.B.: The stubs are missing
++        # pthread_cleanup_push, or rather a function called by this macro,
++        # so we could check for that, but who knows whether they'll stub
++        # that too in a future libc.)  So we'll check first for the
++        # standard Solaris way of linking pthreads (-mt -lpthread).
++
++        ax_pthread_flags="-mt,-lpthread pthread $ax_pthread_flags"
++        ;;
++esac
++
++# Are we compiling with Clang?
++
++AC_CACHE_CHECK([whether $CC is Clang],
++    [ax_cv_PTHREAD_CLANG],
++    [ax_cv_PTHREAD_CLANG=no
++     # Note that Autoconf sets GCC=yes for Clang as well as GCC
++     if test "x$GCC" = "xyes"; then
++        AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
++            [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
++#            if defined(__clang__) && defined(__llvm__)
++             AX_PTHREAD_CC_IS_CLANG
++#            endif
++            ],
++            [ax_cv_PTHREAD_CLANG=yes])
++     fi
++    ])
++ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
++
++
++# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)
++
++# Note that for GCC and Clang -pthread generally implies -lpthread,
++# except when -nostdlib is passed.
++# This is problematic using libtool to build C++ shared libraries with pthread:
++# [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25460
++# [2] https://bugzilla.redhat.com/show_bug.cgi?id=661333
++# [3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468555
++# To solve this, first try -pthread together with -lpthread for GCC
++
++AS_IF([test "x$GCC" = "xyes"],
++      [ax_pthread_flags="-pthread,-lpthread -pthread -pthreads $ax_pthread_flags"])
++
++# Clang takes -pthread (never supported any other flag), but we'll try with -lpthread first
++
++AS_IF([test "x$ax_pthread_clang" = "xyes"],
++      [ax_pthread_flags="-pthread,-lpthread -pthread"])
++
++
++# The presence of a feature test macro requesting re-entrant function
++# definitions is, on some systems, a strong hint that pthreads support is
++# correctly enabled
++
++case $host_os in
++        darwin* | hpux* | linux* | osf* | solaris*)
++        ax_pthread_check_macro="_REENTRANT"
++        ;;
++
++        aix*)
++        ax_pthread_check_macro="_THREAD_SAFE"
++        ;;
++
++        *)
++        ax_pthread_check_macro="--"
++        ;;
++esac
++AS_IF([test "x$ax_pthread_check_macro" = "x--"],
++      [ax_pthread_check_cond=0],
++      [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
++
++
++if test "x$ax_pthread_ok" = "xno"; then
++for ax_pthread_try_flag in $ax_pthread_flags; do
++
++        case $ax_pthread_try_flag in
++                none)
++                AC_MSG_CHECKING([whether pthreads work without any flags])
++                ;;
++
++                *,*)
++                PTHREAD_CFLAGS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\1/"`
++                PTHREAD_LIBS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\2/"`
++                AC_MSG_CHECKING([whether pthreads work with "$PTHREAD_CFLAGS" and "$PTHREAD_LIBS"])
++                ;;
++
++                -*)
++                AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
++                PTHREAD_CFLAGS="$ax_pthread_try_flag"
++                ;;
++
++                pthread-config)
++                AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
++                AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
++                PTHREAD_CFLAGS="`pthread-config --cflags`"
++                PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
++                ;;
++
++                *)
++                AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
++                PTHREAD_LIBS="-l$ax_pthread_try_flag"
++                ;;
++        esac
++
++        ax_pthread_save_CFLAGS="$CFLAGS"
++        ax_pthread_save_LIBS="$LIBS"
++        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
++        LIBS="$PTHREAD_LIBS $LIBS"
++
++        # Check for various functions.  We must include pthread.h,
++        # since some functions may be macros.  (On the Sequent, we
++        # need a special flag -Kthread to make this header compile.)
++        # We check for pthread_join because it is in -lpthread on IRIX
++        # while pthread_create is in libc.  We check for pthread_attr_init
++        # due to DEC craziness with -lpthreads.  We check for
++        # pthread_cleanup_push because it is one of the few pthread
++        # functions on Solaris that doesn't have a non-functional libc stub.
++        # We try pthread_create on general principles.
++
++        AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
++#                       if $ax_pthread_check_cond
++#                        error "$ax_pthread_check_macro must be defined"
++#                       endif
++                        static void *some_global = NULL;
++                        static void routine(void *a)
++                          {
++                             /* To avoid any unused-parameter or
++                                unused-but-set-parameter warning.  */
++                             some_global = a;
++                          }
++                        static void *start_routine(void *a) { return a; }],
++                       [pthread_t th; pthread_attr_t attr;
++                        pthread_create(&th, 0, start_routine, 0);
++                        pthread_join(th, 0);
++                        pthread_attr_init(&attr);
++                        pthread_cleanup_push(routine, 0);
++                        pthread_cleanup_pop(0) /* ; */])],
++            [ax_pthread_ok=yes],
++            [])
++
++        CFLAGS="$ax_pthread_save_CFLAGS"
++        LIBS="$ax_pthread_save_LIBS"
++
++        AC_MSG_RESULT([$ax_pthread_ok])
++        AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])
++
++        PTHREAD_LIBS=""
++        PTHREAD_CFLAGS=""
++done
++fi
++
++
++# Clang needs special handling, because older versions handle the -pthread
++# option in a rather... idiosyncratic way
++
++if test "x$ax_pthread_clang" = "xyes"; then
++
++        # Clang takes -pthread; it has never supported any other flag
++
++        # (Note 1: This will need to be revisited if a system that Clang
++        # supports has POSIX threads in a separate library.  This tends not
++        # to be the way of modern systems, but it's conceivable.)
++
++        # (Note 2: On some systems, notably Darwin, -pthread is not needed
++        # to get POSIX threads support; the API is always present and
++        # active.  We could reasonably leave PTHREAD_CFLAGS empty.  But
++        # -pthread does define _REENTRANT, and while the Darwin headers
++        # ignore this macro, third-party headers might not.)
++
++        # However, older versions of Clang make a point of warning the user
++        # that, in an invocation where only linking and no compilation is
++        # taking place, the -pthread option has no effect ("argument unused
++        # during compilation").  They expect -pthread to be passed in only
++        # when source code is being compiled.
++        #
++        # Problem is, this is at odds with the way Automake and most other
++        # C build frameworks function, which is that the same flags used in
++        # compilation (CFLAGS) are also used in linking.  Many systems
++        # supported by AX_PTHREAD require exactly this for POSIX threads
++        # support, and in fact it is often not straightforward to specify a
++        # flag that is used only in the compilation phase and not in
++        # linking.  Such a scenario is extremely rare in practice.
++        #
++        # Even though use of the -pthread flag in linking would only print
++        # a warning, this can be a nuisance for well-run software projects
++        # that build with -Werror.  So if the active version of Clang has
++        # this misfeature, we search for an option to squash it.
++
++        AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
++            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
++            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
++             # Create an alternate version of $ac_link that compiles and
++             # links in two steps (.c -> .o, .o -> exe) instead of one
++             # (.c -> exe), because the warning occurs only in the second
++             # step
++             ax_pthread_save_ac_link="$ac_link"
++             ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
++             ax_pthread_link_step=`AS_ECHO(["$ac_link"]) | sed "$ax_pthread_sed"`
++             ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
++             ax_pthread_save_CFLAGS="$CFLAGS"
++             for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
++                AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
++                CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
++                ac_link="$ax_pthread_save_ac_link"
++                AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
++                    [ac_link="$ax_pthread_2step_ac_link"
++                     AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
++                         [break])
++                    ])
++             done
++             ac_link="$ax_pthread_save_ac_link"
++             CFLAGS="$ax_pthread_save_CFLAGS"
++             AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
++             ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
++            ])
++
++        case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
++                no | unknown) ;;
++                *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
++        esac
++
++fi # $ax_pthread_clang = yes
++
++
++
++# Various other checks:
++if test "x$ax_pthread_ok" = "xyes"; then
++        ax_pthread_save_CFLAGS="$CFLAGS"
++        ax_pthread_save_LIBS="$LIBS"
++        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
++        LIBS="$PTHREAD_LIBS $LIBS"
++
++        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
++        AC_CACHE_CHECK([for joinable pthread attribute],
++            [ax_cv_PTHREAD_JOINABLE_ATTR],
++            [ax_cv_PTHREAD_JOINABLE_ATTR=unknown
++             for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
++                 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
++                                                 [int attr = $ax_pthread_attr; return attr /* ; */])],
++                                [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
++                                [])
++             done
++            ])
++        AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
++               test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
++               test "x$ax_pthread_joinable_attr_defined" != "xyes"],
++              [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
++                                  [$ax_cv_PTHREAD_JOINABLE_ATTR],
++                                  [Define to necessary symbol if this constant
++                                   uses a non-standard name on your system.])
++               ax_pthread_joinable_attr_defined=yes
++              ])
++
++        AC_CACHE_CHECK([whether more special flags are required for pthreads],
++            [ax_cv_PTHREAD_SPECIAL_FLAGS],
++            [ax_cv_PTHREAD_SPECIAL_FLAGS=no
++             case $host_os in
++             solaris*)
++             ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
++             ;;
++             esac
++            ])
++        AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
++               test "x$ax_pthread_special_flags_added" != "xyes"],
++              [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
++               ax_pthread_special_flags_added=yes])
++
++        AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
++            [ax_cv_PTHREAD_PRIO_INHERIT],
++            [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
++                                             [[int i = PTHREAD_PRIO_INHERIT;
++                                               return i;]])],
++                            [ax_cv_PTHREAD_PRIO_INHERIT=yes],
++                            [ax_cv_PTHREAD_PRIO_INHERIT=no])
++            ])
++        AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
++               test "x$ax_pthread_prio_inherit_defined" != "xyes"],
++              [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
++               ax_pthread_prio_inherit_defined=yes
++              ])
++
++        CFLAGS="$ax_pthread_save_CFLAGS"
++        LIBS="$ax_pthread_save_LIBS"
++
++        # More AIX lossage: compile with *_r variant
++        if test "x$GCC" != "xyes"; then
++            case $host_os in
++                aix*)
++                AS_CASE(["x/$CC"],
++                    [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
++                    [#handle absolute path differently from PATH based program lookup
++                     AS_CASE(["x$CC"],
++                         [x/*],
++                         [
++			   AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])
++			   AS_IF([test "x${CXX}" != "x"], [AS_IF([AS_EXECUTABLE_P([${CXX}_r])],[PTHREAD_CXX="${CXX}_r"])])
++			 ],
++                         [
++			   AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])
++			   AS_IF([test "x${CXX}" != "x"], [AC_CHECK_PROGS([PTHREAD_CXX],[${CXX}_r],[$CXX])])
++			 ]
++                     )
++                    ])
++                ;;
++            esac
++        fi
++fi
++
++test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
++test -n "$PTHREAD_CXX" || PTHREAD_CXX="$CXX"
++
++AC_SUBST([PTHREAD_LIBS])
++AC_SUBST([PTHREAD_CFLAGS])
++AC_SUBST([PTHREAD_CC])
++AC_SUBST([PTHREAD_CXX])
++
++# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
++if test "x$ax_pthread_ok" = "xyes"; then
++        ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
++        :
++else
++        ax_pthread_ok=no
++        $2
++fi
++AC_LANG_POP
++])dnl AX_PTHREAD
+diff --git a/configure.ac b/configure.ac
+index b625743..bbf4768 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -80,11 +80,22 @@ PKG_CHECK_MODULES(GLIB, [gmodule-2.0 gio-unix-2.0 >= 2.30.0])
+ AC_SUBST(GLIB_CFLAGS)
+ AC_SUBST(GLIB_LIBS)
+ 
+-PKG_CHECK_MODULES(LIBJS, [mozjs-78])
+-
+-AC_SUBST(LIBJS_CFLAGS)
+-AC_SUBST(LIBJS_CXXFLAGS)
+-AC_SUBST(LIBJS_LIBS)
++dnl ---------------------------------------------------------------------------
++dnl - Check javascript backend
++dnl ---------------------------------------------------------------------------
++AC_ARG_WITH(duktape, AS_HELP_STRING([--with-duktape],[Use Duktape as javascript backend]),with_duktape=yes,with_duktape=no)
++AS_IF([test x${with_duktape} == xyes], [
++  PKG_CHECK_MODULES(LIBJS, [duktape >= 2.2.0 ])
++  AC_SUBST(LIBJS_CFLAGS)
++  AC_SUBST(LIBJS_LIBS)
++], [
++  PKG_CHECK_MODULES(LIBJS, [mozjs-78])
++
++  AC_SUBST(LIBJS_CFLAGS)
++  AC_SUBST(LIBJS_CXXFLAGS)
++  AC_SUBST(LIBJS_LIBS)
++])
++AM_CONDITIONAL(USE_DUKTAPE, [test x$with_duktape == xyes], [Using duktape as javascript engine library])
+ 
+ EXPAT_LIB=""
+ AC_ARG_WITH(expat, [  --with-expat=<dir>      Use expat from here],
+@@ -100,6 +111,12 @@ AC_CHECK_LIB(expat,XML_ParserCreate,[EXPAT_LIBS="-lexpat"],
+ 	     [AC_MSG_ERROR([Can't find expat library. Please install expat.])])
+ AC_SUBST(EXPAT_LIBS)
+ 
++AX_PTHREAD([], [AC_MSG_ERROR([Cannot find the way to enable pthread support.])])
++LIBS="$PTHREAD_LIBS $LIBS"
++CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
++CC="$PTHREAD_CC"
++AC_CHECK_FUNCS([pthread_condattr_setclock])
++
+ AC_CHECK_FUNCS(clearenv fdatasync setnetgrent)
+ 
+ if test "x$GCC" = "xyes"; then
+@@ -581,6 +598,13 @@ echo "
+         PAM support:                ${have_pam}
+         systemdsystemunitdir:       ${systemdsystemunitdir}
+         polkitd user:               ${POLKITD_USER}"
++if test "x${with_duktape}" = xyes; then
++echo "
++        Javascript engine:          Duktape"
++else
++echo "
++        Javascript engine:          Mozjs"
++fi
+ 
+ if test "$have_pam" = yes ; then
+ echo "
+diff --git a/docs/man/polkit.xml b/docs/man/polkit.xml
+index 99aa474..90715a5 100644
+--- a/docs/man/polkit.xml
++++ b/docs/man/polkit.xml
+@@ -639,7 +639,9 @@ polkit.Result = {
+         If user-provided code takes a long time to execute, an exception
+         will be thrown which normally results in the function being
+         terminated (the current limit is 15 seconds). This is used to
+-        catch runaway scripts.
++        catch runaway scripts. If the duktape JavaScript backend is
++        compiled in, instead of mozjs, no exception will be thrown—the
++        script will be killed right away (same timeout).
+       </para>
+ 
+       <para>
+diff --git a/meson.build b/meson.build
+index b3702be..7506231 100644
+--- a/meson.build
++++ b/meson.build
+@@ -126,7 +126,18 @@ expat_dep = dependency('expat')
+ assert(cc.has_header('expat.h', dependencies: expat_dep), 'Can\'t find expat.h. Please install expat.')
+ assert(cc.has_function('XML_ParserCreate', dependencies: expat_dep), 'Can\'t find expat library. Please install expat.')
+ 
+-mozjs_dep = dependency('mozjs-78')
++duktape_req_version = '>= 2.2.0'
++
++js_engine = get_option('js_engine')
++if js_engine == 'duktape'
++  js_dep = dependency('duktape', version: duktape_req_version)
++  libm_dep = cc.find_library('m')
++  thread_dep = dependency('threads')
++  func = 'pthread_condattr_setclock'
++  config_h.set('HAVE_' + func.to_upper(), cc.has_function(func, prefix : '#include <pthread.h>'))
++elif js_engine == 'mozjs'
++  js_dep = dependency('mozjs-78')
++endif
+ 
+ dbus_dep = dependency('dbus-1')
+ dbus_confdir = dbus_dep.get_pkgconfig_variable('datadir', define_variable: ['datadir', pk_prefix / pk_datadir])   #changed from sysconfdir with respect to commit#8eada3836465838
+@@ -350,6 +361,9 @@ if enable_logind
+   output += '        systemdsystemunitdir:     ' + systemd_systemdsystemunitdir + '\n'
+ endif
+ output += '        polkitd user:             ' + polkitd_user + ' \n'
++output += '        Javascript engine:        ' + js_engine + '\n'
++if enable_logind
++endif
+ output += '        PAM support:              ' + enable_pam.to_string() + '\n\n'
+ if enable_pam
+   output += '        PAM file auth:            ' + pam_conf['PAM_FILE_INCLUDE_AUTH'] + '\n'
+diff --git a/meson_options.txt b/meson_options.txt
+index 25e3e77..76aa311 100644
+--- a/meson_options.txt
++++ b/meson_options.txt
+@@ -16,3 +16,4 @@ option('introspection', type: 'boolean', value: true, description: 'Enable intro
+ 
+ option('gtk_doc', type: 'boolean', value: false, description: 'use gtk-doc to build documentation')
+ option('man', type: 'boolean', value: false, description: 'build manual pages')
++option('js_engine', type: 'combo', choices: ['mozjs', 'duktape'], value: 'duktape', description: 'javascript engine')
+diff --git a/src/polkitbackend/Makefile.am b/src/polkitbackend/Makefile.am
+index 7e3c080..935fb98 100644
+--- a/src/polkitbackend/Makefile.am
++++ b/src/polkitbackend/Makefile.am
+@@ -17,6 +17,8 @@ AM_CPPFLAGS =                                                   \
+         -DPACKAGE_LIB_DIR=\""$(libdir)"\"                       \
+         -D_POSIX_PTHREAD_SEMANTICS                              \
+         -D_REENTRANT                                            \
++        -D_XOPEN_SOURCE=700                                     \
++        -D_GNU_SOURCE=1                                         \
+         $(NULL)
+ 
+ noinst_LTLIBRARIES=libpolkit-backend-1.la
+@@ -31,9 +33,10 @@ libpolkit_backend_1_la_SOURCES =                                   			\
+         polkitbackend.h									\
+ 	polkitbackendtypes.h								\
+ 	polkitbackendprivate.h								\
++	polkitbackendcommon.h			polkitbackendcommon.c			\
+ 	polkitbackendauthority.h		polkitbackendauthority.c		\
+ 	polkitbackendinteractiveauthority.h	polkitbackendinteractiveauthority.c	\
+-	polkitbackendjsauthority.h		polkitbackendjsauthority.cpp		\
++	polkitbackendjsauthority.h				\
+ 	polkitbackendactionpool.h		polkitbackendactionpool.c		\
+ 	polkitbackendactionlookup.h		polkitbackendactionlookup.c		\
+         $(NULL)
+@@ -51,19 +54,27 @@ libpolkit_backend_1_la_CFLAGS =                                        	\
+         -D_POLKIT_BACKEND_COMPILATION                                  	\
+         $(GLIB_CFLAGS)							\
+ 	$(LIBSYSTEMD_CFLAGS)						\
+-	$(LIBJS_CFLAGS)							\
++	$(LIBJS_CFLAGS)						\
+         $(NULL)
+ 
+ libpolkit_backend_1_la_CXXFLAGS = $(libpolkit_backend_1_la_CFLAGS)
+ 
+ libpolkit_backend_1_la_LIBADD =                               		\
+         $(GLIB_LIBS)							\
++        $(DUKTAPE_LIBS)							\
+ 	$(LIBSYSTEMD_LIBS)						\
+ 	$(top_builddir)/src/polkit/libpolkit-gobject-1.la		\
+ 	$(EXPAT_LIBS)							\
+-	$(LIBJS_LIBS)							\
++	$(LIBJS_LIBS)                                                   \
+         $(NULL)
+ 
++if USE_DUKTAPE
++libpolkit_backend_1_la_SOURCES += polkitbackendduktapeauthority.c
++libpolkit_backend_1_la_LIBADD += -lm
++else
++libpolkit_backend_1_la_SOURCES += polkitbackendjsauthority.cpp
++endif
++
+ rulesdir = $(sysconfdir)/polkit-1/rules.d
+ rules_DATA = 50-default.rules
+ 
+diff --git a/src/polkitbackend/meson.build b/src/polkitbackend/meson.build
+index 93c3c34..99f8e33 100644
+--- a/src/polkitbackend/meson.build
++++ b/src/polkitbackend/meson.build
+@@ -4,8 +4,8 @@ sources = files(
+   'polkitbackendactionlookup.c',
+   'polkitbackendactionpool.c',
+   'polkitbackendauthority.c',
++  'polkitbackendcommon.c',
+   'polkitbackendinteractiveauthority.c',
+-  'polkitbackendjsauthority.cpp',
+ )
+ 
+ output = 'initjs.h'
+@@ -21,7 +21,7 @@ sources += custom_target(
+ deps = [
+   expat_dep,
+   libpolkit_gobject_dep,
+-  mozjs_dep,
++  js_dep,
+ ]
+ 
+ c_flags = [
+@@ -29,8 +29,18 @@ c_flags = [
+   '-D_POLKIT_BACKEND_COMPILATION',
+   '-DPACKAGE_DATA_DIR="@0@"'.format(pk_prefix / pk_datadir),
+   '-DPACKAGE_SYSCONF_DIR="@0@"'.format(pk_prefix / pk_sysconfdir),
++  '-D_XOPEN_SOURCE=700',
++  '-D_GNU_SOURCE=1',
+ ]
+ 
++if js_engine == 'duktape'
++  sources += files('polkitbackendduktapeauthority.c')
++  deps += libm_dep
++  deps += thread_dep
++elif js_engine == 'mozjs'
++  sources += files('polkitbackendjsauthority.cpp')
++endif
++
+ if enable_logind
+   sources += files('polkitbackendsessionmonitor-systemd.c')
+ 
+diff --git a/src/polkitbackend/polkitbackendcommon.c b/src/polkitbackend/polkitbackendcommon.c
+new file mode 100644
+index 0000000..6783dff
+--- /dev/null
++++ b/src/polkitbackend/polkitbackendcommon.c
+@@ -0,0 +1,530 @@
++/*
++ * Copyright (C) 2008 Red Hat, Inc.
++ *
++ * This library is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU Lesser General Public
++ * License as published by the Free Software Foundation; either
++ * version 2 of the License, or (at your option) any later version.
++ *
++ * This library 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
++ * Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General
++ * Public License along with this library; if not, write to the
++ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
++ * Boston, MA 02111-1307, USA.
++ *
++ * Author: David Zeuthen <davidz@redhat.com>
++ */
++
++#include "polkitbackendcommon.h"
++
++static void
++utils_child_watch_from_release_cb (GPid     pid,
++                                   gint     status,
++                                   gpointer user_data)
++{
++}
++
++static void
++utils_spawn_data_free (UtilsSpawnData *data)
++{
++  if (data->timeout_source != NULL)
++    {
++      g_source_destroy (data->timeout_source);
++      data->timeout_source = NULL;
++    }
++
++  /* Nuke the child, if necessary */
++  if (data->child_watch_source != NULL)
++    {
++      g_source_destroy (data->child_watch_source);
++      data->child_watch_source = NULL;
++    }
++
++  if (data->child_pid != 0)
++    {
++      GSource *source;
++      kill (data->child_pid, SIGTERM);
++      /* OK, we need to reap for the child ourselves - we don't want
++       * to use waitpid() because that might block the calling
++       * thread (the child might handle SIGTERM and use several
++       * seconds for cleanup/rollback).
++       *
++       * So we use GChildWatch instead.
++       *
++       * Avoid taking a references to ourselves. but note that we need
++       * to pass the GSource so we can nuke it once handled.
++       */
++      source = g_child_watch_source_new (data->child_pid);
++      g_source_set_callback (source,
++                             (GSourceFunc) utils_child_watch_from_release_cb,
++                             source,
++                             (GDestroyNotify) g_source_destroy);
++      g_source_attach (source, data->main_context);
++      g_source_unref (source);
++      data->child_pid = 0;
++    }
++
++  if (data->child_stdout != NULL)
++    {
++      g_string_free (data->child_stdout, TRUE);
++      data->child_stdout = NULL;
++    }
++
++  if (data->child_stderr != NULL)
++    {
++      g_string_free (data->child_stderr, TRUE);
++      data->child_stderr = NULL;
++    }
++
++  if (data->child_stdout_channel != NULL)
++    {
++      g_io_channel_unref (data->child_stdout_channel);
++      data->child_stdout_channel = NULL;
++    }
++  if (data->child_stderr_channel != NULL)
++    {
++      g_io_channel_unref (data->child_stderr_channel);
++      data->child_stderr_channel = NULL;
++    }
++
++  if (data->child_stdout_source != NULL)
++    {
++      g_source_destroy (data->child_stdout_source);
++      data->child_stdout_source = NULL;
++    }
++  if (data->child_stderr_source != NULL)
++    {
++      g_source_destroy (data->child_stderr_source);
++      data->child_stderr_source = NULL;
++    }
++
++  if (data->child_stdout_fd != -1)
++    {
++      g_warn_if_fail (close (data->child_stdout_fd) == 0);
++      data->child_stdout_fd = -1;
++    }
++  if (data->child_stderr_fd != -1)
++    {
++      g_warn_if_fail (close (data->child_stderr_fd) == 0);
++      data->child_stderr_fd = -1;
++    }
++
++  if (data->cancellable_handler_id > 0)
++    {
++      g_cancellable_disconnect (data->cancellable, data->cancellable_handler_id);
++      data->cancellable_handler_id = 0;
++    }
++
++  if (data->main_context != NULL)
++    g_main_context_unref (data->main_context);
++
++  if (data->cancellable != NULL)
++    g_object_unref (data->cancellable);
++
++  g_slice_free (UtilsSpawnData, data);
++}
++
++/* called in the thread where @cancellable was cancelled */
++static void
++utils_on_cancelled (GCancellable *cancellable,
++                    gpointer      user_data)
++{
++  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
++  GError *error;
++
++  error = NULL;
++  g_warn_if_fail (g_cancellable_set_error_if_cancelled (cancellable, &error));
++  g_simple_async_result_take_error (data->simple, error);
++  g_simple_async_result_complete_in_idle (data->simple);
++  g_object_unref (data->simple);
++}
++
++static gboolean
++utils_timeout_cb (gpointer user_data)
++{
++  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
++
++  data->timed_out = TRUE;
++
++  /* ok, timeout is history, make sure we don't free it in spawn_data_free() */
++  data->timeout_source = NULL;
++
++  /* we're done */
++  g_simple_async_result_complete_in_idle (data->simple);
++  g_object_unref (data->simple);
++
++  return FALSE; /* remove source */
++}
++
++static void
++utils_child_watch_cb (GPid     pid,
++                      gint     status,
++                      gpointer user_data)
++{
++  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
++  gchar *buf;
++  gsize buf_size;
++
++  if (g_io_channel_read_to_end (data->child_stdout_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
++    {
++      g_string_append_len (data->child_stdout, buf, buf_size);
++      g_free (buf);
++    }
++  if (g_io_channel_read_to_end (data->child_stderr_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
++    {
++      g_string_append_len (data->child_stderr, buf, buf_size);
++      g_free (buf);
++    }
++
++  data->exit_status = status;
++
++  /* ok, child watch is history, make sure we don't free it in spawn_data_free() */
++  data->child_pid = 0;
++  data->child_watch_source = NULL;
++
++  /* we're done */
++  g_simple_async_result_complete_in_idle (data->simple);
++  g_object_unref (data->simple);
++}
++
++static gboolean
++utils_read_child_stderr (GIOChannel *channel,
++                         GIOCondition condition,
++                         gpointer user_data)
++{
++  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
++  gchar buf[1024];
++  gsize bytes_read;
++
++  g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
++  g_string_append_len (data->child_stderr, buf, bytes_read);
++  return TRUE;
++}
++
++static gboolean
++utils_read_child_stdout (GIOChannel *channel,
++                         GIOCondition condition,
++                         gpointer user_data)
++{
++  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
++  gchar buf[1024];
++  gsize bytes_read;
++
++  g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
++  g_string_append_len (data->child_stdout, buf, bytes_read);
++  return TRUE;
++}
++
++void
++polkit_backend_common_spawn (const gchar *const  *argv,
++                             guint                timeout_seconds,
++                             GCancellable        *cancellable,
++                             GAsyncReadyCallback  callback,
++                             gpointer             user_data)
++{
++  UtilsSpawnData *data;
++  GError *error;
++
++  data = g_slice_new0 (UtilsSpawnData);
++  data->timeout_seconds = timeout_seconds;
++  data->simple = g_simple_async_result_new (NULL,
++                                            callback,
++                                            user_data,
++                                            (gpointer*)polkit_backend_common_spawn);
++  data->main_context = g_main_context_get_thread_default ();
++  if (data->main_context != NULL)
++    g_main_context_ref (data->main_context);
++
++  data->cancellable = cancellable != NULL ? (GCancellable*)g_object_ref (cancellable) : NULL;
++
++  data->child_stdout = g_string_new (NULL);
++  data->child_stderr = g_string_new (NULL);
++  data->child_stdout_fd = -1;
++  data->child_stderr_fd = -1;
++
++  /* the life-cycle of UtilsSpawnData is tied to its GSimpleAsyncResult */
++  g_simple_async_result_set_op_res_gpointer (data->simple, data, (GDestroyNotify) utils_spawn_data_free);
++
++  error = NULL;
++  if (data->cancellable != NULL)
++    {
++      /* could already be cancelled */
++      error = NULL;
++      if (g_cancellable_set_error_if_cancelled (data->cancellable, &error))
++        {
++          g_simple_async_result_take_error (data->simple, error);
++          g_simple_async_result_complete_in_idle (data->simple);
++          g_object_unref (data->simple);
++          goto out;
++        }
++
++      data->cancellable_handler_id = g_cancellable_connect (data->cancellable,
++                                                            G_CALLBACK (utils_on_cancelled),
++                                                            data,
++                                                            NULL);
++    }
++
++  error = NULL;
++  if (!g_spawn_async_with_pipes (NULL, /* working directory */
++                                 (gchar **) argv,
++                                 NULL, /* envp */
++                                 G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
++                                 NULL, /* child_setup */
++                                 NULL, /* child_setup's user_data */
++                                 &(data->child_pid),
++                                 NULL, /* gint *stdin_fd */
++                                 &(data->child_stdout_fd),
++                                 &(data->child_stderr_fd),
++                                 &error))
++    {
++      g_prefix_error (&error, "Error spawning: ");
++      g_simple_async_result_take_error (data->simple, error);
++      g_simple_async_result_complete_in_idle (data->simple);
++      g_object_unref (data->simple);
++      goto out;
++    }
++
++  if (timeout_seconds > 0)
++    {
++      data->timeout_source = g_timeout_source_new_seconds (timeout_seconds);
++      g_source_set_priority (data->timeout_source, G_PRIORITY_DEFAULT);
++      g_source_set_callback (data->timeout_source, utils_timeout_cb, data, NULL);
++      g_source_attach (data->timeout_source, data->main_context);
++      g_source_unref (data->timeout_source);
++    }
++
++  data->child_watch_source = g_child_watch_source_new (data->child_pid);
++  g_source_set_callback (data->child_watch_source, (GSourceFunc) utils_child_watch_cb, data, NULL);
++  g_source_attach (data->child_watch_source, data->main_context);
++  g_source_unref (data->child_watch_source);
++
++  data->child_stdout_channel = g_io_channel_unix_new (data->child_stdout_fd);
++  g_io_channel_set_flags (data->child_stdout_channel, G_IO_FLAG_NONBLOCK, NULL);
++  data->child_stdout_source = g_io_create_watch (data->child_stdout_channel, G_IO_IN);
++  g_source_set_callback (data->child_stdout_source, (GSourceFunc) utils_read_child_stdout, data, NULL);
++  g_source_attach (data->child_stdout_source, data->main_context);
++  g_source_unref (data->child_stdout_source);
++
++  data->child_stderr_channel = g_io_channel_unix_new (data->child_stderr_fd);
++  g_io_channel_set_flags (data->child_stderr_channel, G_IO_FLAG_NONBLOCK, NULL);
++  data->child_stderr_source = g_io_create_watch (data->child_stderr_channel, G_IO_IN);
++  g_source_set_callback (data->child_stderr_source, (GSourceFunc) utils_read_child_stderr, data, NULL);
++  g_source_attach (data->child_stderr_source, data->main_context);
++  g_source_unref (data->child_stderr_source);
++
++ out:
++  ;
++}
++
++void
++polkit_backend_common_on_dir_monitor_changed (GFileMonitor     *monitor,
++                                              GFile            *file,
++                                              GFile            *other_file,
++                                              GFileMonitorEvent event_type,
++                                              gpointer          user_data)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (user_data);
++
++  /* TODO: maybe rate-limit so storms of events are collapsed into one with a 500ms resolution?
++   *       Because when editing a file with emacs we get 4-8 events..
++   */
++
++  if (file != NULL)
++    {
++      gchar *name;
++
++      name = g_file_get_basename (file);
++
++      /* g_print ("event_type=%d file=%p name=%s\n", event_type, file, name); */
++      if (!g_str_has_prefix (name, ".") &&
++          !g_str_has_prefix (name, "#") &&
++          g_str_has_suffix (name, ".rules") &&
++          (event_type == G_FILE_MONITOR_EVENT_CREATED ||
++           event_type == G_FILE_MONITOR_EVENT_DELETED ||
++           event_type == G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT))
++        {
++          polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                        "Reloading rules");
++          polkit_backend_common_reload_scripts (authority);
++        }
++      g_free (name);
++    }
++}
++
++gboolean
++polkit_backend_common_spawn_finish (GAsyncResult   *res,
++                                    gint           *out_exit_status,
++                                    gchar         **out_standard_output,
++                                    gchar         **out_standard_error,
++                                    GError        **error)
++{
++  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
++  UtilsSpawnData *data;
++  gboolean ret = FALSE;
++
++  g_return_val_if_fail (G_IS_ASYNC_RESULT (res), FALSE);
++  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
++
++  g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == polkit_backend_common_spawn);
++
++  if (g_simple_async_result_propagate_error (simple, error))
++    goto out;
++
++  data = (UtilsSpawnData*)g_simple_async_result_get_op_res_gpointer (simple);
++
++  if (data->timed_out)
++    {
++      g_set_error (error,
++                   G_IO_ERROR,
++                   G_IO_ERROR_TIMED_OUT,
++                   "Timed out after %d seconds",
++                   data->timeout_seconds);
++      goto out;
++    }
++
++  if (out_exit_status != NULL)
++    *out_exit_status = data->exit_status;
++
++  if (out_standard_output != NULL)
++    *out_standard_output = g_strdup (data->child_stdout->str);
++
++  if (out_standard_error != NULL)
++    *out_standard_error = g_strdup (data->child_stderr->str);
++
++  ret = TRUE;
++
++ out:
++  return ret;
++}
++
++static const gchar *
++polkit_backend_js_authority_get_name (PolkitBackendAuthority *authority)
++{
++  return "js";
++}
++
++static const gchar *
++polkit_backend_js_authority_get_version (PolkitBackendAuthority *authority)
++{
++  return PACKAGE_VERSION;
++}
++
++static PolkitAuthorityFeatures
++polkit_backend_js_authority_get_features (PolkitBackendAuthority *authority)
++{
++  return POLKIT_AUTHORITY_FEATURES_TEMPORARY_AUTHORIZATION;
++}
++
++void
++polkit_backend_common_js_authority_class_init_common (PolkitBackendJsAuthorityClass *klass)
++{
++  GObjectClass *gobject_class;
++  PolkitBackendAuthorityClass *authority_class;
++  PolkitBackendInteractiveAuthorityClass *interactive_authority_class;
++
++  gobject_class = G_OBJECT_CLASS (klass);
++  gobject_class->finalize                               = polkit_backend_common_js_authority_finalize;
++  gobject_class->set_property                           = polkit_backend_common_js_authority_set_property;
++  gobject_class->constructed                            = polkit_backend_common_js_authority_constructed;
++
++  authority_class = POLKIT_BACKEND_AUTHORITY_CLASS (klass);
++  authority_class->get_name                             = polkit_backend_js_authority_get_name;
++  authority_class->get_version                          = polkit_backend_js_authority_get_version;
++  authority_class->get_features                         = polkit_backend_js_authority_get_features;
++
++  interactive_authority_class = POLKIT_BACKEND_INTERACTIVE_AUTHORITY_CLASS (klass);
++  interactive_authority_class->get_admin_identities     = polkit_backend_common_js_authority_get_admin_auth_identities;
++  interactive_authority_class->check_authorization_sync = polkit_backend_common_js_authority_check_authorization_sync;
++
++  g_object_class_install_property (gobject_class,
++                                   PROP_RULES_DIRS,
++                                   g_param_spec_boxed ("rules-dirs",
++                                                       NULL,
++                                                       NULL,
++                                                       G_TYPE_STRV,
++                                                       G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
++}
++
++gint
++polkit_backend_common_rules_file_name_cmp (const gchar *a,
++                                           const gchar *b)
++{
++  gint ret;
++  const gchar *a_base;
++  const gchar *b_base;
++
++  a_base = strrchr (a, '/');
++  b_base = strrchr (b, '/');
++
++  g_assert (a_base != NULL);
++  g_assert (b_base != NULL);
++  a_base += 1;
++  b_base += 1;
++
++  ret = g_strcmp0 (a_base, b_base);
++  if (ret == 0)
++    {
++      /* /etc wins over /usr */
++      ret = g_strcmp0 (a, b);
++      g_assert (ret != 0);
++    }
++
++  return ret;
++}
++
++const gchar *
++polkit_backend_common_get_signal_name (gint signal_number)
++{
++  switch (signal_number)
++    {
++#define _HANDLE_SIG(sig) case sig: return #sig;
++    _HANDLE_SIG (SIGHUP);
++    _HANDLE_SIG (SIGINT);
++    _HANDLE_SIG (SIGQUIT);
++    _HANDLE_SIG (SIGILL);
++    _HANDLE_SIG (SIGABRT);
++    _HANDLE_SIG (SIGFPE);
++    _HANDLE_SIG (SIGKILL);
++    _HANDLE_SIG (SIGSEGV);
++    _HANDLE_SIG (SIGPIPE);
++    _HANDLE_SIG (SIGALRM);
++    _HANDLE_SIG (SIGTERM);
++    _HANDLE_SIG (SIGUSR1);
++    _HANDLE_SIG (SIGUSR2);
++    _HANDLE_SIG (SIGCHLD);
++    _HANDLE_SIG (SIGCONT);
++    _HANDLE_SIG (SIGSTOP);
++    _HANDLE_SIG (SIGTSTP);
++    _HANDLE_SIG (SIGTTIN);
++    _HANDLE_SIG (SIGTTOU);
++    _HANDLE_SIG (SIGBUS);
++#ifdef SIGPOLL
++    _HANDLE_SIG (SIGPOLL);
++#endif
++    _HANDLE_SIG (SIGPROF);
++    _HANDLE_SIG (SIGSYS);
++    _HANDLE_SIG (SIGTRAP);
++    _HANDLE_SIG (SIGURG);
++    _HANDLE_SIG (SIGVTALRM);
++    _HANDLE_SIG (SIGXCPU);
++    _HANDLE_SIG (SIGXFSZ);
++#undef _HANDLE_SIG
++    default:
++      break;
++    }
++  return "UNKNOWN_SIGNAL";
++}
++
++void
++polkit_backend_common_spawn_cb (GObject       *source_object,
++                                GAsyncResult  *res,
++                                gpointer       user_data)
++{
++  SpawnData *data = (SpawnData *)user_data;
++  data->res = (GAsyncResult*)g_object_ref (res);
++  g_main_loop_quit (data->loop);
++}
+diff --git a/src/polkitbackend/polkitbackendcommon.h b/src/polkitbackend/polkitbackendcommon.h
+new file mode 100644
+index 0000000..dd700fc
+--- /dev/null
++++ b/src/polkitbackend/polkitbackendcommon.h
+@@ -0,0 +1,158 @@
++/*
++ * Copyright (C) 2008 Red Hat, Inc.
++ *
++ * This library is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU Lesser General Public
++ * License as published by the Free Software Foundation; either
++ * version 2 of the License, or (at your option) any later version.
++ *
++ * This library 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
++ * Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General
++ * Public License along with this library; if not, write to the
++ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
++ * Boston, MA 02111-1307, USA.
++ *
++ * Author: David Zeuthen <davidz@redhat.com>
++ */
++
++#if !defined (_POLKIT_BACKEND_COMPILATION) && !defined(_POLKIT_BACKEND_INSIDE_POLKIT_BACKEND_H)
++#error "Only <polkitbackend/polkitbackend.h> can be included directly, this file may disappear or change contents."
++#endif
++
++#ifndef __POLKIT_BACKEND_COMMON_H
++#define __POLKIT_BACKEND_COMMON_H
++
++#include "config.h"
++#include <sys/wait.h>
++#include <errno.h>
++#include <pwd.h>
++#include <grp.h>
++#ifdef HAVE_NETGROUP_H
++#include <netgroup.h>
++#else
++#include <netdb.h>
++#endif
++#include <string.h>
++#include <glib/gstdio.h>
++#include <locale.h>
++#include <glib/gi18n-lib.h> //here, all things glib via glib.h (including -> gspawn.h)
++
++#include <polkit/polkit.h>
++#include "polkitbackendjsauthority.h"
++
++#include <polkit/polkitprivate.h>
++
++#ifdef HAVE_LIBSYSTEMD
++#include <systemd/sd-login.h>
++#endif /* HAVE_LIBSYSTEMD */
++
++#define RUNAWAY_KILLER_TIMEOUT (15)
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++enum
++{
++  PROP_0,
++  PROP_RULES_DIRS,
++};
++
++typedef struct
++{
++  GSimpleAsyncResult *simple; /* borrowed reference */
++  GMainContext *main_context; /* may be NULL */
++
++  GCancellable *cancellable;  /* may be NULL */
++  gulong cancellable_handler_id;
++
++  GPid child_pid;
++  gint child_stdout_fd;
++  gint child_stderr_fd;
++
++  GIOChannel *child_stdout_channel;
++  GIOChannel *child_stderr_channel;
++
++  GSource *child_watch_source;
++  GSource *child_stdout_source;
++  GSource *child_stderr_source;
++
++  guint timeout_seconds;
++  gboolean timed_out;
++  GSource *timeout_source;
++
++  GString *child_stdout;
++  GString *child_stderr;
++
++  gint exit_status;
++} UtilsSpawnData;
++
++typedef struct
++{
++  GMainLoop *loop;
++  GAsyncResult *res;
++} SpawnData;
++
++void polkit_backend_common_spawn (const gchar *const  *argv,
++                                  guint                timeout_seconds,
++                                  GCancellable        *cancellable,
++                                  GAsyncReadyCallback  callback,
++                                  gpointer             user_data);
++void polkit_backend_common_spawn_cb (GObject       *source_object,
++                                     GAsyncResult  *res,
++                                     gpointer       user_data);
++gboolean polkit_backend_common_spawn_finish (GAsyncResult   *res,
++                                             gint           *out_exit_status,
++                                             gchar         **out_standard_output,
++                                             gchar         **out_standard_error,
++                                             GError        **error);
++
++void polkit_backend_common_on_dir_monitor_changed (GFileMonitor     *monitor,
++                                                   GFile            *file,
++                                                   GFile            *other_file,
++                                                   GFileMonitorEvent event_type,
++                                                   gpointer          user_data);
++
++void polkit_backend_common_js_authority_class_init_common (PolkitBackendJsAuthorityClass *klass);
++
++gint polkit_backend_common_rules_file_name_cmp (const gchar *a,
++                                                const gchar *b);
++
++const gchar *polkit_backend_common_get_signal_name (gint signal_number);
++
++/* To be provided by each JS backend, from here onwards  ---------------------------------------------- */
++
++void polkit_backend_common_reload_scripts (PolkitBackendJsAuthority *authority);
++void polkit_backend_common_js_authority_finalize (GObject *object);
++void polkit_backend_common_js_authority_constructed (GObject *object);
++GList *polkit_backend_common_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *_authority,
++                                                                     PolkitSubject                     *caller,
++                                                                     PolkitSubject                     *subject,
++                                                                     PolkitIdentity                    *user_for_subject,
++                                                                     gboolean                           subject_is_local,
++                                                                     gboolean                           subject_is_active,
++                                                                     const gchar                       *action_id,
++                                                                     PolkitDetails                     *details);
++void polkit_backend_common_js_authority_set_property (GObject      *object,
++                                                      guint         property_id,
++                                                      const GValue *value,
++                                                      GParamSpec   *pspec);
++PolkitImplicitAuthorization polkit_backend_common_js_authority_check_authorization_sync (PolkitBackendInteractiveAuthority *_authority,
++                                                                                         PolkitSubject                     *caller,
++                                                                                         PolkitSubject                     *subject,
++                                                                                         PolkitIdentity                    *user_for_subject,
++                                                                                         gboolean                           subject_is_local,
++                                                                                         gboolean                           subject_is_active,
++                                                                                         const gchar                       *action_id,
++                                                                                         PolkitDetails                     *details,
++                                                                                         PolkitImplicitAuthorization        implicit);
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* __POLKIT_BACKEND_COMMON_H */
++
+diff --git a/src/polkitbackend/polkitbackendduktapeauthority.c b/src/polkitbackend/polkitbackendduktapeauthority.c
+new file mode 100644
+index 0000000..c89dbcf
+--- /dev/null
++++ b/src/polkitbackend/polkitbackendduktapeauthority.c
+@@ -0,0 +1,1051 @@
++/*
++ * Copyright (C) 2008-2012 Red Hat, Inc.
++ * Copyright (C) 2015 Tangent Space <jstpierre@mecheye.net>
++ * Copyright (C) 2019 Wu Xiaotian <yetist@gmail.com>
++ *
++ * This library is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU Lesser General Public
++ * License as published by the Free Software Foundation; either
++ * version 2 of the License, or (at your option) any later version.
++ *
++ * This library 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
++ * Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General
++ * Public License along with this library; if not, write to the
++ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
++ * Boston, MA 02111-1307, USA.
++ *
++ * Author: David Zeuthen <davidz@redhat.com>
++ */
++
++#include <pthread.h>
++
++#include "polkitbackendcommon.h"
++
++#include "duktape.h"
++
++/* Built source and not too big to worry about deduplication */
++#include "initjs.h" /* init.js */
++
++/**
++ * SECTION:polkitbackendjsauthority
++ * @title: PolkitBackendJsAuthority
++ * @short_description: JS Authority
++ * @stability: Unstable
++ *
++ * An (Duktape-based) implementation of #PolkitBackendAuthority that reads and
++ * evaluates Javascript files and supports interaction with authentication
++ * agents (virtue of being based on #PolkitBackendInteractiveAuthority).
++ */
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++struct _PolkitBackendJsAuthorityPrivate
++{
++  gchar **rules_dirs;
++  GFileMonitor **dir_monitors; /* NULL-terminated array of GFileMonitor instances */
++
++  duk_context *cx;
++
++  pthread_t runaway_killer_thread;
++};
++
++enum
++{
++  RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET,
++  RUNAWAY_KILLER_THREAD_EXIT_STATUS_SUCCESS,
++  RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE,
++};
++
++static gboolean execute_script_with_runaway_killer(PolkitBackendJsAuthority *authority,
++                                                   const gchar *filename);
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++G_DEFINE_TYPE (PolkitBackendJsAuthority, polkit_backend_js_authority, POLKIT_BACKEND_TYPE_INTERACTIVE_AUTHORITY);
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static duk_ret_t js_polkit_log (duk_context *cx);
++static duk_ret_t js_polkit_spawn (duk_context *cx);
++static duk_ret_t js_polkit_user_is_in_netgroup (duk_context *cx);
++
++static const duk_function_list_entry js_polkit_functions[] =
++{
++  { "log", js_polkit_log, 1 },
++  { "spawn", js_polkit_spawn, 1 },
++  { "_userIsInNetGroup", js_polkit_user_is_in_netgroup, 2 },
++  { NULL, NULL, 0 },
++};
++
++static void report_error (void     *udata,
++                          const char *msg)
++{
++    PolkitBackendJsAuthority *authority = udata;
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "fatal Duktape JS backend error: %s",
++                                  (msg ? msg : "no message"));
++}
++
++static void
++polkit_backend_js_authority_init (PolkitBackendJsAuthority *authority)
++{
++  authority->priv = G_TYPE_INSTANCE_GET_PRIVATE (authority,
++                                                 POLKIT_BACKEND_TYPE_JS_AUTHORITY,
++                                                 PolkitBackendJsAuthorityPrivate);
++}
++
++static void
++load_scripts (PolkitBackendJsAuthority  *authority)
++{
++  GList *files = NULL;
++  GList *l;
++  guint num_scripts = 0;
++  GError *error = NULL;
++  guint n;
++
++  files = NULL;
++
++  for (n = 0; authority->priv->rules_dirs != NULL && authority->priv->rules_dirs[n] != NULL; n++)
++    {
++      const gchar *dir_name = authority->priv->rules_dirs[n];
++      GDir *dir = NULL;
++
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Loading rules from directory %s",
++                                    dir_name);
++
++      dir = g_dir_open (dir_name,
++                        0,
++                        &error);
++      if (dir == NULL)
++        {
++          polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                        "Error opening rules directory: %s (%s, %d)",
++                                        error->message, g_quark_to_string (error->domain), error->code);
++          g_clear_error (&error);
++        }
++      else
++        {
++          const gchar *name;
++          while ((name = g_dir_read_name (dir)) != NULL)
++            {
++              if (g_str_has_suffix (name, ".rules"))
++                files = g_list_prepend (files, g_strdup_printf ("%s/%s", dir_name, name));
++            }
++          g_dir_close (dir);
++        }
++    }
++
++  files = g_list_sort (files, (GCompareFunc) polkit_backend_common_rules_file_name_cmp);
++
++  for (l = files; l != NULL; l = l->next)
++    {
++      const gchar *filename = (gchar *)l->data;
++
++      if (!execute_script_with_runaway_killer(authority, filename))
++          continue;
++      num_scripts++;
++    }
++
++  polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                "Finished loading, compiling and executing %d rules",
++                                num_scripts);
++  g_list_free_full (files, g_free);
++}
++
++void
++polkit_backend_common_reload_scripts (PolkitBackendJsAuthority *authority)
++{
++  duk_context *cx = authority->priv->cx;
++
++  duk_set_top (cx, 0);
++  if (!duk_get_global_string (cx, "polkit")) {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error deleting old rules, not loading new ones");
++      return;
++  }
++  duk_push_string (cx, "_deleteRules");
++
++  duk_call_prop (cx, 0, 0);
++
++  polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                "Collecting garbage unconditionally...");
++
++  load_scripts (authority);
++
++  /* Let applications know we have new rules... */
++  g_signal_emit_by_name (authority, "changed");
++}
++
++static void
++setup_file_monitors (PolkitBackendJsAuthority *authority)
++{
++  guint n;
++  GPtrArray *p;
++
++  p = g_ptr_array_new ();
++  for (n = 0; authority->priv->rules_dirs != NULL && authority->priv->rules_dirs[n] != NULL; n++)
++    {
++      GFile *file;
++      GError *error;
++      GFileMonitor *monitor;
++
++      file = g_file_new_for_path (authority->priv->rules_dirs[n]);
++      error = NULL;
++      monitor = g_file_monitor_directory (file,
++                                          G_FILE_MONITOR_NONE,
++                                          NULL,
++                                          &error);
++      g_object_unref (file);
++      if (monitor == NULL)
++        {
++          g_warning ("Error monitoring directory %s: %s",
++                     authority->priv->rules_dirs[n],
++                     error->message);
++          g_clear_error (&error);
++        }
++      else
++        {
++          g_signal_connect (monitor,
++                            "changed",
++                            G_CALLBACK (polkit_backend_common_on_dir_monitor_changed),
++                            authority);
++          g_ptr_array_add (p, monitor);
++        }
++    }
++  g_ptr_array_add (p, NULL);
++  authority->priv->dir_monitors = (GFileMonitor**) g_ptr_array_free (p, FALSE);
++}
++
++void
++polkit_backend_common_js_authority_constructed (GObject *object)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
++  duk_context *cx;
++
++  cx = duk_create_heap (NULL, NULL, NULL, authority, report_error);
++  if (cx == NULL)
++    goto fail;
++
++  authority->priv->cx = cx;
++
++  duk_push_global_object (cx);
++  duk_push_object (cx);
++  duk_put_function_list (cx, -1, js_polkit_functions);
++  duk_put_prop_string (cx, -2, "polkit");
++
++  /* load polkit objects/functions into JS context (e.g. addRule(),
++   * _deleteRules(), _runRules() et al)
++   */
++  duk_eval_string (cx, init_js);
++
++  if (authority->priv->rules_dirs == NULL)
++    {
++      authority->priv->rules_dirs = g_new0 (gchar *, 3);
++      authority->priv->rules_dirs[0] = g_strdup (PACKAGE_SYSCONF_DIR "/polkit-1/rules.d");
++      authority->priv->rules_dirs[1] = g_strdup (PACKAGE_DATA_DIR "/polkit-1/rules.d");
++    }
++
++  setup_file_monitors (authority);
++  load_scripts (authority);
++
++  G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->constructed (object);
++  return;
++
++ fail:
++  g_critical ("Error initializing JavaScript environment");
++  g_assert_not_reached ();
++}
++
++void
++polkit_backend_common_js_authority_finalize (GObject *object)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
++  guint n;
++
++  for (n = 0; authority->priv->dir_monitors != NULL && authority->priv->dir_monitors[n] != NULL; n++)
++    {
++      GFileMonitor *monitor = authority->priv->dir_monitors[n];
++      g_signal_handlers_disconnect_by_func (monitor,
++                                            G_CALLBACK (polkit_backend_common_on_dir_monitor_changed),
++                                            authority);
++      g_object_unref (monitor);
++    }
++  g_free (authority->priv->dir_monitors);
++  g_strfreev (authority->priv->rules_dirs);
++
++  duk_destroy_heap (authority->priv->cx);
++
++  G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->finalize (object);
++}
++
++void
++polkit_backend_common_js_authority_set_property (GObject      *object,
++                                                 guint         property_id,
++                                                 const GValue *value,
++                                                 GParamSpec   *pspec)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
++
++  switch (property_id)
++    {
++      case PROP_RULES_DIRS:
++        g_assert (authority->priv->rules_dirs == NULL);
++        authority->priv->rules_dirs = (gchar **) g_value_dup_boxed (value);
++        break;
++
++      default:
++        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
++        break;
++    }
++}
++
++static void
++polkit_backend_js_authority_class_init (PolkitBackendJsAuthorityClass *klass)
++{
++  polkit_backend_common_js_authority_class_init_common (klass);
++  g_type_class_add_private (klass, sizeof (PolkitBackendJsAuthorityPrivate));
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static void
++set_property_str (duk_context *cx,
++                  const gchar *name,
++                  const gchar *value)
++{
++  duk_push_string (cx, value);
++  duk_put_prop_string (cx, -2, name);
++}
++
++static void
++set_property_strv (duk_context *cx,
++                   const gchar *name,
++                   GPtrArray   *value)
++{
++  guint n;
++  duk_push_array (cx);
++  for (n = 0; n < value->len; n++)
++    {
++      duk_push_string (cx, g_ptr_array_index (value, n));
++      duk_put_prop_index (cx, -2, n);
++    }
++  duk_put_prop_string (cx, -2, name);
++}
++
++static void
++set_property_int32 (duk_context *cx,
++                    const gchar *name,
++                    gint32       value)
++{
++  duk_push_int (cx, value);
++  duk_put_prop_string (cx, -2, name);
++}
++
++static void
++set_property_bool (duk_context *cx,
++                   const char  *name,
++                   gboolean     value)
++{
++  duk_push_boolean (cx, value);
++  duk_put_prop_string (cx, -2, name);
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static gboolean
++push_subject (duk_context               *cx,
++              PolkitSubject             *subject,
++              PolkitIdentity            *user_for_subject,
++              gboolean                   subject_is_local,
++              gboolean                   subject_is_active,
++              GError                   **error)
++{
++  gboolean ret = FALSE;
++  pid_t pid;
++  uid_t uid;
++  gchar *user_name = NULL;
++  GPtrArray *groups = NULL;
++  struct passwd *passwd;
++  char *seat_str = NULL;
++  char *session_str = NULL;
++
++  if (!duk_get_global_string (cx, "Subject")) {
++    return FALSE;
++  }
++
++  duk_new (cx, 0);
++
++  if (POLKIT_IS_UNIX_PROCESS (subject))
++    {
++      pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (subject));
++    }
++  else if (POLKIT_IS_SYSTEM_BUS_NAME (subject))
++    {
++      PolkitSubject *process;
++      process = polkit_system_bus_name_get_process_sync (POLKIT_SYSTEM_BUS_NAME (subject), NULL, error);
++      if (process == NULL)
++        goto out;
++      pid = polkit_unix_process_get_pid (POLKIT_UNIX_PROCESS (process));
++      g_object_unref (process);
++    }
++  else
++    {
++      g_assert_not_reached ();
++    }
++
++#ifdef HAVE_LIBSYSTEMD
++  if (sd_pid_get_session (pid, &session_str) == 0)
++    {
++      if (sd_session_get_seat (session_str, &seat_str) == 0)
++        {
++          /* do nothing */
++        }
++    }
++#endif /* HAVE_LIBSYSTEMD */
++
++  g_assert (POLKIT_IS_UNIX_USER (user_for_subject));
++  uid = polkit_unix_user_get_uid (POLKIT_UNIX_USER (user_for_subject));
++
++  groups = g_ptr_array_new_with_free_func (g_free);
++
++  passwd = getpwuid (uid);
++  if (passwd == NULL)
++    {
++      user_name = g_strdup_printf ("%d", (gint) uid);
++      g_warning ("Error looking up info for uid %d: %m", (gint) uid);
++    }
++  else
++    {
++      gid_t gids[512];
++      int num_gids = 512;
++
++      user_name = g_strdup (passwd->pw_name);
++
++      if (getgrouplist (passwd->pw_name,
++                        passwd->pw_gid,
++                        gids,
++                        &num_gids) < 0)
++        {
++          g_warning ("Error looking up groups for uid %d: %m", (gint) uid);
++        }
++      else
++        {
++          gint n;
++          for (n = 0; n < num_gids; n++)
++            {
++              struct group *group;
++              group = getgrgid (gids[n]);
++              if (group == NULL)
++                {
++                  g_ptr_array_add (groups, g_strdup_printf ("%d", (gint) gids[n]));
++                }
++              else
++                {
++                  g_ptr_array_add (groups, g_strdup (group->gr_name));
++                }
++            }
++        }
++    }
++
++  set_property_int32 (cx, "pid", pid);
++  set_property_str (cx, "user", user_name);
++  set_property_strv (cx, "groups", groups);
++  set_property_str (cx, "seat", seat_str);
++  set_property_str (cx, "session", session_str);
++  set_property_bool (cx, "local", subject_is_local);
++  set_property_bool (cx, "active", subject_is_active);
++
++  ret = TRUE;
++
++ out:
++  free (session_str);
++  free (seat_str);
++  g_free (user_name);
++  if (groups != NULL)
++    g_ptr_array_unref (groups);
++
++  return ret;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static gboolean
++push_action_and_details (duk_context               *cx,
++                         const gchar               *action_id,
++                         PolkitDetails             *details,
++                         GError                   **error)
++{
++  gchar **keys;
++  guint n;
++
++  if (!duk_get_global_string (cx, "Action")) {
++    return FALSE;
++  }
++
++  duk_new (cx, 0);
++
++  set_property_str (cx, "id", action_id);
++
++  keys = polkit_details_get_keys (details);
++  for (n = 0; keys != NULL && keys[n] != NULL; n++)
++    {
++      gchar *key;
++      const gchar *value;
++      key = g_strdup_printf ("_detail_%s", keys[n]);
++      value = polkit_details_lookup (details, keys[n]);
++      set_property_str (cx, key, value);
++      g_free (key);
++    }
++  g_strfreev (keys);
++
++  return TRUE;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++typedef struct {
++  PolkitBackendJsAuthority *authority;
++  const gchar *filename;
++  pthread_cond_t cond;
++  pthread_mutex_t mutex;
++  gint ret;
++} RunawayKillerCtx;
++
++static gpointer
++runaway_killer_thread_execute_js (gpointer user_data)
++{
++  RunawayKillerCtx *ctx = user_data;
++  duk_context *cx = ctx->authority->priv->cx;
++
++  int oldtype, pthread_err;
++
++  if ((pthread_err = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (ctx->authority),
++                                  "Error setting thread cancel type: %s",
++                                  strerror(pthread_err));
++    goto err;
++  }
++
++  GFile *file = g_file_new_for_path(ctx->filename);
++  char *contents;
++  gsize len;
++
++  if (!g_file_load_contents(file, NULL, &contents, &len, NULL, NULL)) {
++    polkit_backend_authority_log(POLKIT_BACKEND_AUTHORITY(ctx->authority),
++                                 "Error loading script %s", ctx->filename);
++    g_object_unref(file);
++    goto err;
++  }
++
++  g_object_unref(file);
++
++  /* evaluate the script, trying to print context in any syntax errors
++     found */
++  if (duk_peval_lstring(cx, contents, len) != 0)
++  {
++    polkit_backend_authority_log(POLKIT_BACKEND_AUTHORITY(ctx->authority),
++                                 "Error compiling script %s: %s", ctx->filename,
++                                 duk_safe_to_string(cx, -1));
++    duk_pop(cx);
++    goto free_err;
++  }
++  g_free(contents);
++
++  ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_SUCCESS;
++  goto end;
++
++free_err:
++  g_free(contents);
++err:
++  ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE;
++end:
++  if ((pthread_err = pthread_cond_signal(&ctx->cond))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (ctx->authority),
++                                  "Error signaling on condition variable: %s",
++                                  strerror(pthread_err));
++    ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE;
++  }
++  return NULL;
++}
++
++static gpointer
++runaway_killer_thread_call_js (gpointer user_data)
++{
++  RunawayKillerCtx *ctx = user_data;
++  duk_context *cx = ctx->authority->priv->cx;
++  int oldtype, pthread_err;
++
++  if ((pthread_err = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (ctx->authority),
++                                  "Error setting thread cancel type: %s",
++                                  strerror(pthread_err));
++    goto err;
++  }
++
++  if (duk_pcall_prop (cx, 0, 2) != DUK_EXEC_SUCCESS)
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (ctx->authority),
++                                    "Error evaluating admin rules: ",
++                                    duk_safe_to_string (cx, -1));
++      goto err;
++    }
++
++  ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_SUCCESS;
++  goto end;
++
++err:
++  ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE;
++end:
++  if ((pthread_err = pthread_cond_signal(&ctx->cond))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (ctx->authority),
++                                  "Error signaling on condition variable: %s",
++                                  strerror(pthread_err));
++    ctx->ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE;
++  }
++  return NULL;
++}
++
++#if defined (HAVE_PTHREAD_CONDATTR_SETCLOCK)
++#  if defined(CLOCK_MONOTONIC)
++#    define PK_CLOCK CLOCK_MONOTONIC
++#  elif defined(CLOCK_BOOTTIME)
++#    define PK_CLOCK CLOCK_BOOTTIME
++#  else
++     /* No suitable clock */
++#    undef HAVE_PTHREAD_CONDATTR_SETCLOCK
++#    define PK_CLOCK CLOCK_REALTIME
++#  endif
++#else  /* ! HAVE_PTHREAD_CONDATTR_SETCLOCK */
++#  define PK_CLOCK CLOCK_REALTIME
++#endif /* ! HAVE_PTHREAD_CONDATTR_SETCLOCK */
++
++static gboolean
++runaway_killer_common(PolkitBackendJsAuthority *authority, RunawayKillerCtx *ctx, void *js_context_cb (void *user_data))
++{
++  int pthread_err;
++  gboolean cancel = FALSE;
++  pthread_condattr_t attr;
++  struct timespec abs_time;
++
++#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
++  if ((pthread_err = pthread_condattr_init(&attr))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error initializing condition variable attributes: %s",
++                                  strerror(pthread_err));
++    return FALSE;
++  }
++  if ((pthread_err = pthread_condattr_setclock(&attr, PK_CLOCK))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error setting condition variable attributes: %s",
++                                  strerror(pthread_err));
++    goto err_clean_condattr;
++  }
++  /* Init again, with needed attr */
++  if ((pthread_err = pthread_cond_init(&ctx->cond, &attr))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error initializing condition variable: %s",
++                                  strerror(pthread_err));
++    goto err_clean_condattr;
++  }
++#endif
++
++  if ((pthread_err = pthread_mutex_lock(&ctx->mutex))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error locking mutex: %s",
++                                  strerror(pthread_err));
++    goto err_clean_cond;
++  }
++
++  if (clock_gettime(PK_CLOCK, &abs_time)) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error getting system's monotonic time: %s",
++                                  strerror(errno));
++    goto err_clean_cond;
++  }
++  abs_time.tv_sec += RUNAWAY_KILLER_TIMEOUT;
++
++  if ((pthread_err = pthread_create(&authority->priv->runaway_killer_thread, NULL,
++                                    js_context_cb, ctx))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error creating runaway JS killer thread: %s",
++                                  strerror(pthread_err));
++    goto err_clean_cond;
++  }
++
++  while (ctx->ret == RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET) /* loop to treat spurious wakeups */
++    if (pthread_cond_timedwait(&ctx->cond, &ctx->mutex, &abs_time) == ETIMEDOUT) {
++      cancel = TRUE;
++
++      /* Log that we are terminating the script */
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Terminating runaway script after %d seconds",
++                                    RUNAWAY_KILLER_TIMEOUT);
++
++      break;
++    }
++
++  if ((pthread_err = pthread_mutex_unlock(&ctx->mutex))) {
++    polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                  "Error unlocking mutex: %s",
++                                  strerror(pthread_err));
++    goto err_clean_cond;
++  }
++
++  if (cancel) {
++    if ((pthread_err = pthread_cancel (authority->priv->runaway_killer_thread))) {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error cancelling runaway JS killer thread: %s",
++                                    strerror(pthread_err));
++      goto err_clean_cond;
++    }
++  }
++  if ((pthread_err = pthread_join (authority->priv->runaway_killer_thread, NULL))) {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error joining runaway JS killer thread: %s",
++                                    strerror(pthread_err));
++      goto err_clean_cond;
++    }
++
++  return ctx->ret == RUNAWAY_KILLER_THREAD_EXIT_STATUS_SUCCESS;
++
++    err_clean_cond:
++#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
++  pthread_cond_destroy(&ctx->cond);
++#endif
++    err_clean_condattr:
++#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
++  pthread_condattr_destroy(&attr);
++#endif
++  return FALSE;
++}
++
++/* Blocking for at most RUNAWAY_KILLER_TIMEOUT */
++static gboolean
++execute_script_with_runaway_killer(PolkitBackendJsAuthority *authority,
++                                   const gchar *filename)
++{
++  RunawayKillerCtx ctx = {.authority = authority, .filename = filename,
++                          .ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET,
++                          .mutex = PTHREAD_MUTEX_INITIALIZER,
++                          .cond = PTHREAD_COND_INITIALIZER};
++
++  return runaway_killer_common(authority, &ctx, &runaway_killer_thread_execute_js);
++}
++
++/* Calls already stacked function and args. Blocking for at most
++ * RUNAWAY_KILLER_TIMEOUT. If timeout is the case, ctx.ret will be
++ * RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET, thus returning FALSE.
++ */
++static gboolean
++call_js_function_with_runaway_killer(PolkitBackendJsAuthority *authority)
++{
++  RunawayKillerCtx ctx = {.authority = authority,
++                          .ret = RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET,
++                          .mutex = PTHREAD_MUTEX_INITIALIZER,
++                          .cond = PTHREAD_COND_INITIALIZER};
++
++  return runaway_killer_common(authority, &ctx, &runaway_killer_thread_call_js);
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++GList *
++polkit_backend_common_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *_authority,
++                                                              PolkitSubject                     *caller,
++                                                              PolkitSubject                     *subject,
++                                                              PolkitIdentity                    *user_for_subject,
++                                                              gboolean                           subject_is_local,
++                                                              gboolean                           subject_is_active,
++                                                              const gchar                       *action_id,
++                                                              PolkitDetails                     *details)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
++  GList *ret = NULL;
++  guint n;
++  GError *error = NULL;
++  const char *ret_str = NULL;
++  gchar **ret_strs = NULL;
++  duk_context *cx = authority->priv->cx;
++
++  duk_set_top (cx, 0);
++  if (!duk_get_global_string (cx, "polkit")) {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error deleting old rules, not loading new ones");
++      goto out;
++  }
++
++  duk_push_string (cx, "_runAdminRules");
++
++  if (!push_action_and_details (cx, action_id, details, &error))
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error converting action and details to JS object: %s",
++                                    error->message);
++      g_clear_error (&error);
++      goto out;
++    }
++
++  if (!push_subject (cx, subject, user_for_subject, subject_is_local, subject_is_active, &error))
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error converting subject to JS object: %s",
++                                    error->message);
++      g_clear_error (&error);
++      goto out;
++    }
++
++  if (!call_js_function_with_runaway_killer (authority))
++    goto out;
++
++  ret_str = duk_require_string (cx, -1);
++
++  ret_strs = g_strsplit (ret_str, ",", -1);
++  for (n = 0; ret_strs != NULL && ret_strs[n] != NULL; n++)
++    {
++      const gchar *identity_str = ret_strs[n];
++      PolkitIdentity *identity;
++
++      error = NULL;
++      identity = polkit_identity_from_string (identity_str, &error);
++      if (identity == NULL)
++        {
++          polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                        "Identity `%s' is not valid, ignoring: %s",
++                                        identity_str, error->message);
++          g_clear_error (&error);
++        }
++      else
++        {
++          ret = g_list_prepend (ret, identity);
++        }
++    }
++  ret = g_list_reverse (ret);
++
++ out:
++  g_strfreev (ret_strs);
++  /* fallback to root password auth */
++  if (ret == NULL)
++    ret = g_list_prepend (ret, polkit_unix_user_new (0));
++
++  return ret;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++PolkitImplicitAuthorization
++polkit_backend_common_js_authority_check_authorization_sync (PolkitBackendInteractiveAuthority *_authority,
++                                                             PolkitSubject                     *caller,
++                                                             PolkitSubject                     *subject,
++                                                             PolkitIdentity                    *user_for_subject,
++                                                             gboolean                           subject_is_local,
++                                                             gboolean                           subject_is_active,
++                                                             const gchar                       *action_id,
++                                                             PolkitDetails                     *details,
++                                                             PolkitImplicitAuthorization        implicit)
++{
++  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
++  PolkitImplicitAuthorization ret = implicit;
++  GError *error = NULL;
++  gchar *ret_str = NULL;
++  gboolean good = FALSE;
++  duk_context *cx = authority->priv->cx;
++
++  duk_set_top (cx, 0);
++  if (!duk_get_global_string (cx, "polkit")) {
++      goto out;
++  }
++
++  duk_push_string (cx, "_runRules");
++
++  if (!push_action_and_details (cx, action_id, details, &error))
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error converting action and details to JS object: %s",
++                                    error->message);
++      g_clear_error (&error);
++      goto out;
++    }
++
++  if (!push_subject (cx, subject, user_for_subject, subject_is_local, subject_is_active, &error))
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Error converting subject to JS object: %s",
++                                    error->message);
++      g_clear_error (&error);
++      goto out;
++    }
++
++  // If any error is the js context happened (ctx.ret ==
++  // RUNAWAY_KILLER_THREAD_EXIT_STATUS_FAILURE) or it never properly returned
++  // (runaway scripts or ctx.ret == RUNAWAY_KILLER_THREAD_EXIT_STATUS_UNSET),
++  // unauthorize
++  if (!call_js_function_with_runaway_killer (authority))
++    goto out;
++
++  if (duk_is_null(cx, -1)) {
++    /* this is fine, means there was no match, use implicit authorizations */
++    good = TRUE;
++    goto out;
++  }
++  ret_str = g_strdup (duk_require_string (cx, -1));
++  if (!polkit_implicit_authorization_from_string (ret_str, &ret))
++    {
++      polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
++                                    "Returned result `%s' is not valid",
++                                    ret_str);
++      goto out;
++    }
++
++  good = TRUE;
++
++ out:
++  if (!good)
++    ret = POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED;
++  if (ret_str != NULL)
++      g_free (ret_str);
++
++  return ret;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static duk_ret_t
++js_polkit_log (duk_context *cx)
++{
++  const char *str = duk_require_string (cx, 0);
++  fprintf (stderr, "%s\n", str);
++  return 0;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++static duk_ret_t
++js_polkit_spawn (duk_context *cx)
++{
++  duk_ret_t ret = DUK_RET_ERROR;
++  gchar *standard_output = NULL;
++  gchar *standard_error = NULL;
++  gint exit_status;
++  GError *error = NULL;
++  guint32 array_len;
++  gchar **argv = NULL;
++  GMainContext *context = NULL;
++  GMainLoop *loop = NULL;
++  SpawnData data = {0};
++  char *err_str = NULL;
++  guint n;
++
++  if (!duk_is_array (cx, 0))
++    goto out;
++
++  array_len = duk_get_length (cx, 0);
++
++  argv = g_new0 (gchar*, array_len + 1);
++  for (n = 0; n < array_len; n++)
++    {
++      duk_get_prop_index (cx, 0, n);
++      argv[n] = g_strdup (duk_to_string (cx, -1));
++      duk_pop (cx);
++    }
++
++  context = g_main_context_new ();
++  loop = g_main_loop_new (context, FALSE);
++
++  g_main_context_push_thread_default (context);
++
++  data.loop = loop;
++  polkit_backend_common_spawn ((const gchar *const *) argv,
++                               10, /* timeout_seconds */
++                               NULL, /* cancellable */
++                               polkit_backend_common_spawn_cb,
++                               &data);
++
++  g_main_loop_run (loop);
++
++  g_main_context_pop_thread_default (context);
++
++  if (!polkit_backend_common_spawn_finish (data.res,
++                                           &exit_status,
++                                           &standard_output,
++                                           &standard_error,
++                                           &error))
++    {
++      err_str = g_strdup_printf ("Error spawning helper: %s (%s, %d)",
++                                 error->message, g_quark_to_string (error->domain), error->code);
++      g_clear_error (&error);
++      goto out;
++    }
++
++  if (!(WIFEXITED (exit_status) && WEXITSTATUS (exit_status) == 0))
++    {
++      GString *gstr;
++      gstr = g_string_new (NULL);
++      if (WIFEXITED (exit_status))
++        {
++          g_string_append_printf (gstr,
++                                  "Helper exited with non-zero exit status %d",
++                                  WEXITSTATUS (exit_status));
++        }
++      else if (WIFSIGNALED (exit_status))
++        {
++          g_string_append_printf (gstr,
++                                  "Helper was signaled with signal %s (%d)",
++                                  polkit_backend_common_get_signal_name (WTERMSIG (exit_status)),
++                                  WTERMSIG (exit_status));
++        }
++      g_string_append_printf (gstr, ", stdout=`%s', stderr=`%s'",
++                              standard_output, standard_error);
++      err_str = g_string_free (gstr, FALSE);
++      goto out;
++    }
++
++  duk_push_string (cx, standard_output);
++  ret = 1;
++
++ out:
++  g_strfreev (argv);
++  g_free (standard_output);
++  g_free (standard_error);
++  g_clear_object (&data.res);
++  if (loop != NULL)
++    g_main_loop_unref (loop);
++  if (context != NULL)
++    g_main_context_unref (context);
++
++  if (err_str)
++    duk_error (cx, DUK_ERR_ERROR, err_str);
++
++  return ret;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
++
++
++static duk_ret_t
++js_polkit_user_is_in_netgroup (duk_context *cx)
++{
++  const char *user;
++  const char *netgroup;
++  gboolean is_in_netgroup = FALSE;
++
++  user = duk_require_string (cx, 0);
++  netgroup = duk_require_string (cx, 1);
++
++  if (innetgr (netgroup,
++               NULL,  /* host */
++               user,
++               NULL)) /* domain */
++    {
++      is_in_netgroup = TRUE;
++    }
++
++  duk_push_boolean (cx, is_in_netgroup);
++  return 1;
++}
++
++/* ---------------------------------------------------------------------------------------------------- */
+diff --git a/src/polkitbackend/polkitbackendjsauthority.cpp b/src/polkitbackend/polkitbackendjsauthority.cpp
+index ca17108..11e91c0 100644
+--- a/src/polkitbackend/polkitbackendjsauthority.cpp
++++ b/src/polkitbackend/polkitbackendjsauthority.cpp
+@@ -19,29 +19,7 @@
+  * Author: David Zeuthen <davidz@redhat.com>
+  */
+ 
+-#include "config.h"
+-#include <sys/wait.h>
+-#include <errno.h>
+-#include <pwd.h>
+-#include <grp.h>
+-#ifdef HAVE_NETGROUP_H
+-#include <netgroup.h>
+-#else
+-#include <netdb.h>
+-#endif
+-#include <string.h>
+-#include <glib/gstdio.h>
+-#include <locale.h>
+-#include <glib/gi18n-lib.h>
+-
+-#include <polkit/polkit.h>
+-#include "polkitbackendjsauthority.h"
+-
+-#include <polkit/polkitprivate.h>
+-
+-#ifdef HAVE_LIBSYSTEMD
+-#include <systemd/sd-login.h>
+-#endif /* HAVE_LIBSYSTEMD */
++#include "polkitbackendcommon.h"
+ 
+ #include <js/CompilationAndEvaluation.h>
+ #include <js/ContextOptions.h>
+@@ -52,6 +30,7 @@
+ #include <js/Array.h>
+ #include <jsapi.h>
+ 
++/* Built source and not too big to worry about deduplication */
+ #include "initjs.h" /* init.js */
+ 
+ #ifdef JSGC_USE_EXACT_ROOTING
+@@ -67,10 +46,9 @@
+  * @short_description: JS Authority
+  * @stability: Unstable
+  *
+- * An implementation of #PolkitBackendAuthority that reads and
+- * evalates Javascript files and supports interaction with
+- * authentication agents (virtue of being based on
+- * #PolkitBackendInteractiveAuthority).
++ * An (SpiderMonkey-based) implementation of #PolkitBackendAuthority that reads
++ * and evaluates Javascript files and supports interaction with authentication
++ * agents (virtue of being based on #PolkitBackendInteractiveAuthority).
+  */
+ 
+ /* ---------------------------------------------------------------------------------------------------- */
+@@ -100,57 +78,11 @@ static bool execute_script_with_runaway_killer (PolkitBackendJsAuthority *author
+                                     JS::HandleScript                 script,
+                                     JS::MutableHandleValue           rval);
+ 
+-static void utils_spawn (const gchar *const  *argv,
+-                         guint                timeout_seconds,
+-                         GCancellable        *cancellable,
+-                         GAsyncReadyCallback  callback,
+-                         gpointer             user_data);
+-
+-gboolean utils_spawn_finish (GAsyncResult   *res,
+-                             gint           *out_exit_status,
+-                             gchar         **out_standard_output,
+-                             gchar         **out_standard_error,
+-                             GError        **error);
+-
+-static void on_dir_monitor_changed (GFileMonitor     *monitor,
+-                                    GFile            *file,
+-                                    GFile            *other_file,
+-                                    GFileMonitorEvent event_type,
+-                                    gpointer          user_data);
+-
+-/* ---------------------------------------------------------------------------------------------------- */
+-
+-enum
+-{
+-  PROP_0,
+-  PROP_RULES_DIRS,
+-};
+-
+ /* ---------------------------------------------------------------------------------------------------- */
+ 
+ static gpointer runaway_killer_thread_func (gpointer user_data);
+ static void runaway_killer_terminate (PolkitBackendJsAuthority *authority);
+ 
+-static GList *polkit_backend_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *authority,
+-                                                                     PolkitSubject                     *caller,
+-                                                                     PolkitSubject                     *subject,
+-                                                                     PolkitIdentity                    *user_for_subject,
+-                                                                     gboolean                           subject_is_local,
+-                                                                     gboolean                           subject_is_active,
+-                                                                     const gchar                       *action_id,
+-                                                                     PolkitDetails                     *details);
+-
+-static PolkitImplicitAuthorization polkit_backend_js_authority_check_authorization_sync (
+-                                                          PolkitBackendInteractiveAuthority *authority,
+-                                                          PolkitSubject                     *caller,
+-                                                          PolkitSubject                     *subject,
+-                                                          PolkitIdentity                    *user_for_subject,
+-                                                          gboolean                           subject_is_local,
+-                                                          gboolean                           subject_is_active,
+-                                                          const gchar                       *action_id,
+-                                                          PolkitDetails                     *details,
+-                                                          PolkitImplicitAuthorization        implicit);
+-
+ G_DEFINE_TYPE (PolkitBackendJsAuthority, polkit_backend_js_authority, POLKIT_BACKEND_TYPE_INTERACTIVE_AUTHORITY);
+ 
+ /* ---------------------------------------------------------------------------------------------------- */
+@@ -229,33 +161,6 @@ polkit_backend_js_authority_init (PolkitBackendJsAuthority *authority)
+                                                  PolkitBackendJsAuthorityPrivate);
+ }
+ 
+-static gint
+-rules_file_name_cmp (const gchar *a,
+-                     const gchar *b)
+-{
+-  gint ret;
+-  const gchar *a_base;
+-  const gchar *b_base;
+-
+-  a_base = strrchr (a, '/');
+-  b_base = strrchr (b, '/');
+-
+-  g_assert (a_base != NULL);
+-  g_assert (b_base != NULL);
+-  a_base += 1;
+-  b_base += 1;
+-
+-  ret = g_strcmp0 (a_base, b_base);
+-  if (ret == 0)
+-    {
+-      /* /etc wins over /usr */
+-      ret = g_strcmp0 (a, b);
+-      g_assert (ret != 0);
+-    }
+-
+-  return ret;
+-}
+-
+ /* authority->priv->cx must be within a request */
+ static void
+ load_scripts (PolkitBackendJsAuthority  *authority)
+@@ -299,7 +204,7 @@ load_scripts (PolkitBackendJsAuthority  *authority)
+         }
+     }
+ 
+-  files = g_list_sort (files, (GCompareFunc) rules_file_name_cmp);
++  files = g_list_sort (files, (GCompareFunc) polkit_backend_common_rules_file_name_cmp);
+ 
+   for (l = files; l != NULL; l = l->next)
+     {
+@@ -365,8 +270,8 @@ load_scripts (PolkitBackendJsAuthority  *authority)
+   g_list_free_full (files, g_free);
+ }
+ 
+-static void
+-reload_scripts (PolkitBackendJsAuthority *authority)
++void
++polkit_backend_common_reload_scripts (PolkitBackendJsAuthority *authority)
+ {
+   JS::RootedValueArray<1> args(authority->priv->cx);
+   JS::RootedValue rval(authority->priv->cx);
+@@ -395,42 +300,6 @@ reload_scripts (PolkitBackendJsAuthority *authority)
+   g_signal_emit_by_name (authority, "changed");
+ }
+ 
+-static void
+-on_dir_monitor_changed (GFileMonitor     *monitor,
+-                        GFile            *file,
+-                        GFile            *other_file,
+-                        GFileMonitorEvent event_type,
+-                        gpointer          user_data)
+-{
+-  PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (user_data);
+-
+-  /* TODO: maybe rate-limit so storms of events are collapsed into one with a 500ms resolution?
+-   *       Because when editing a file with emacs we get 4-8 events..
+-   */
+-
+-  if (file != NULL)
+-    {
+-      gchar *name;
+-
+-      name = g_file_get_basename (file);
+-
+-      /* g_print ("event_type=%d file=%p name=%s\n", event_type, file, name); */
+-      if (!g_str_has_prefix (name, ".") &&
+-          !g_str_has_prefix (name, "#") &&
+-          g_str_has_suffix (name, ".rules") &&
+-          (event_type == G_FILE_MONITOR_EVENT_CREATED ||
+-           event_type == G_FILE_MONITOR_EVENT_DELETED ||
+-           event_type == G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT))
+-        {
+-          polkit_backend_authority_log (POLKIT_BACKEND_AUTHORITY (authority),
+-                                        "Reloading rules");
+-          reload_scripts (authority);
+-        }
+-      g_free (name);
+-    }
+-}
+-
+-
+ static void
+ setup_file_monitors (PolkitBackendJsAuthority *authority)
+ {
+@@ -462,7 +331,7 @@ setup_file_monitors (PolkitBackendJsAuthority *authority)
+         {
+           g_signal_connect (monitor,
+                             "changed",
+-                            G_CALLBACK (on_dir_monitor_changed),
++                            G_CALLBACK (polkit_backend_common_on_dir_monitor_changed),
+                             authority);
+           g_ptr_array_add (p, monitor);
+         }
+@@ -471,8 +340,8 @@ setup_file_monitors (PolkitBackendJsAuthority *authority)
+   authority->priv->dir_monitors = (GFileMonitor**) g_ptr_array_free (p, FALSE);
+ }
+ 
+-static void
+-polkit_backend_js_authority_constructed (GObject *object)
++void
++polkit_backend_common_js_authority_constructed (GObject *object)
+ {
+   PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+ 
+@@ -561,8 +430,8 @@ polkit_backend_js_authority_constructed (GObject *object)
+   g_assert_not_reached ();
+ }
+ 
+-static void
+-polkit_backend_js_authority_finalize (GObject *object)
++void
++polkit_backend_common_js_authority_finalize (GObject *object)
+ {
+   PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+   guint n;
+@@ -577,7 +446,7 @@ polkit_backend_js_authority_finalize (GObject *object)
+     {
+       GFileMonitor *monitor = authority->priv->dir_monitors[n];
+       g_signal_handlers_disconnect_by_func (monitor,
+-                                            (gpointer*)G_CALLBACK (on_dir_monitor_changed),
++                                            (gpointer*)G_CALLBACK (polkit_backend_common_on_dir_monitor_changed),
+                                             authority);
+       g_object_unref (monitor);
+     }
+@@ -594,11 +463,11 @@ polkit_backend_js_authority_finalize (GObject *object)
+   G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->finalize (object);
+ }
+ 
+-static void
+-polkit_backend_js_authority_set_property (GObject      *object,
+-                                          guint         property_id,
+-                                          const GValue *value,
+-                                          GParamSpec   *pspec)
++void
++polkit_backend_common_js_authority_set_property (GObject      *object,
++                                                 guint         property_id,
++                                                 const GValue *value,
++                                                 GParamSpec   *pspec)
+ {
+   PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (object);
+ 
+@@ -615,57 +484,12 @@ polkit_backend_js_authority_set_property (GObject      *object,
+     }
+ }
+ 
+-static const gchar *
+-polkit_backend_js_authority_get_name (PolkitBackendAuthority *authority)
+-{
+-  return "js";
+-}
+-
+-static const gchar *
+-polkit_backend_js_authority_get_version (PolkitBackendAuthority *authority)
+-{
+-  return PACKAGE_VERSION;
+-}
+-
+-static PolkitAuthorityFeatures
+-polkit_backend_js_authority_get_features (PolkitBackendAuthority *authority)
+-{
+-  return POLKIT_AUTHORITY_FEATURES_TEMPORARY_AUTHORIZATION;
+-}
+-
+ static void
+ polkit_backend_js_authority_class_init (PolkitBackendJsAuthorityClass *klass)
+ {
+-  GObjectClass *gobject_class;
+-  PolkitBackendAuthorityClass *authority_class;
+-  PolkitBackendInteractiveAuthorityClass *interactive_authority_class;
+-
+-
+-  gobject_class = G_OBJECT_CLASS (klass);
+-  gobject_class->finalize                               = polkit_backend_js_authority_finalize;
+-  gobject_class->set_property                           = polkit_backend_js_authority_set_property;
+-  gobject_class->constructed                            = polkit_backend_js_authority_constructed;
+-
+-  authority_class = POLKIT_BACKEND_AUTHORITY_CLASS (klass);
+-  authority_class->get_name                             = polkit_backend_js_authority_get_name;
+-  authority_class->get_version                          = polkit_backend_js_authority_get_version;
+-  authority_class->get_features                         = polkit_backend_js_authority_get_features;
+-
+-  interactive_authority_class = POLKIT_BACKEND_INTERACTIVE_AUTHORITY_CLASS (klass);
+-  interactive_authority_class->get_admin_identities     = polkit_backend_js_authority_get_admin_auth_identities;
+-  interactive_authority_class->check_authorization_sync = polkit_backend_js_authority_check_authorization_sync;
+-
+-  g_object_class_install_property (gobject_class,
+-                                   PROP_RULES_DIRS,
+-                                   g_param_spec_boxed ("rules-dirs",
+-                                                       NULL,
+-                                                       NULL,
+-                                                       G_TYPE_STRV,
+-                                                       GParamFlags(G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE)));
+-
++  polkit_backend_common_js_authority_class_init_common (klass);
+ 
+   g_type_class_add_private (klass, sizeof (PolkitBackendJsAuthorityPrivate));
+-
+   JS_Init ();
+ }
+ 
+@@ -1005,11 +829,14 @@ runaway_killer_setup (PolkitBackendJsAuthority *authority)
+ {
+   g_assert (authority->priv->rkt_source == NULL);
+ 
+-  /* set-up timer for runaway scripts, will be executed in runaway_killer_thread */
++  /* set-up timer for runaway scripts, will be executed in
++     runaway_killer_thread, that is one, permanent thread running a glib
++     mainloop (rkt_loop) whose context (rkt_context) has a timeout source
++     (rkt_source) */
+   g_mutex_lock (&authority->priv->rkt_timeout_pending_mutex);
+   authority->priv->rkt_timeout_pending = FALSE;
+   g_mutex_unlock (&authority->priv->rkt_timeout_pending_mutex);
+-  authority->priv->rkt_source = g_timeout_source_new_seconds (15);
++  authority->priv->rkt_source = g_timeout_source_new_seconds (RUNAWAY_KILLER_TIMEOUT);
+   g_source_set_callback (authority->priv->rkt_source, rkt_on_timeout, authority, NULL);
+   g_source_attach (authority->priv->rkt_source, authority->priv->rkt_context);
+ 
+@@ -1069,6 +896,9 @@ execute_script_with_runaway_killer (PolkitBackendJsAuthority *authority,
+ {
+   bool ret;
+ 
++  // tries to JS_ExecuteScript(), may hang for > RUNAWAY_KILLER_TIMEOUT,
++  // runaway_killer_thread makes sure the call returns, due to exception
++  // injection
+   runaway_killer_setup (authority);
+   ret = JS_ExecuteScript (authority->priv->cx,
+                           script,
+@@ -1099,15 +929,15 @@ call_js_function_with_runaway_killer (PolkitBackendJsAuthority *authority,
+ 
+ /* ---------------------------------------------------------------------------------------------------- */
+ 
+-static GList *
+-polkit_backend_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *_authority,
+-                                                       PolkitSubject                     *caller,
+-                                                       PolkitSubject                     *subject,
+-                                                       PolkitIdentity                    *user_for_subject,
+-                                                       gboolean                           subject_is_local,
+-                                                       gboolean                           subject_is_active,
+-                                                       const gchar                       *action_id,
+-                                                       PolkitDetails                     *details)
++GList *
++polkit_backend_common_js_authority_get_admin_auth_identities (PolkitBackendInteractiveAuthority *_authority,
++                                                              PolkitSubject                     *caller,
++                                                              PolkitSubject                     *subject,
++                                                              PolkitIdentity                    *user_for_subject,
++                                                              gboolean                           subject_is_local,
++                                                              gboolean                           subject_is_active,
++                                                              const gchar                       *action_id,
++                                                              PolkitDetails                     *details)
+ {
+   PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
+   GList *ret = NULL;
+@@ -1202,16 +1032,16 @@ polkit_backend_js_authority_get_admin_auth_identities (PolkitBackendInteractiveA
+ 
+ /* ---------------------------------------------------------------------------------------------------- */
+ 
+-static PolkitImplicitAuthorization
+-polkit_backend_js_authority_check_authorization_sync (PolkitBackendInteractiveAuthority *_authority,
+-                                                      PolkitSubject                     *caller,
+-                                                      PolkitSubject                     *subject,
+-                                                      PolkitIdentity                    *user_for_subject,
+-                                                      gboolean                           subject_is_local,
+-                                                      gboolean                           subject_is_active,
+-                                                      const gchar                       *action_id,
+-                                                      PolkitDetails                     *details,
+-                                                      PolkitImplicitAuthorization        implicit)
++PolkitImplicitAuthorization
++polkit_backend_common_js_authority_check_authorization_sync (PolkitBackendInteractiveAuthority *_authority,
++                                                             PolkitSubject                     *caller,
++                                                             PolkitSubject                     *subject,
++                                                             PolkitIdentity                    *user_for_subject,
++                                                             gboolean                           subject_is_local,
++                                                             gboolean                           subject_is_active,
++                                                             const gchar                       *action_id,
++                                                             PolkitDetails                     *details,
++                                                             PolkitImplicitAuthorization        implicit)
+ {
+   PolkitBackendJsAuthority *authority = POLKIT_BACKEND_JS_AUTHORITY (_authority);
+   PolkitImplicitAuthorization ret = implicit;
+@@ -1324,65 +1154,6 @@ js_polkit_log (JSContext  *cx,
+ 
+ /* ---------------------------------------------------------------------------------------------------- */
+ 
+-static const gchar *
+-get_signal_name (gint signal_number)
+-{
+-  switch (signal_number)
+-    {
+-#define _HANDLE_SIG(sig) case sig: return #sig;
+-    _HANDLE_SIG (SIGHUP);
+-    _HANDLE_SIG (SIGINT);
+-    _HANDLE_SIG (SIGQUIT);
+-    _HANDLE_SIG (SIGILL);
+-    _HANDLE_SIG (SIGABRT);
+-    _HANDLE_SIG (SIGFPE);
+-    _HANDLE_SIG (SIGKILL);
+-    _HANDLE_SIG (SIGSEGV);
+-    _HANDLE_SIG (SIGPIPE);
+-    _HANDLE_SIG (SIGALRM);
+-    _HANDLE_SIG (SIGTERM);
+-    _HANDLE_SIG (SIGUSR1);
+-    _HANDLE_SIG (SIGUSR2);
+-    _HANDLE_SIG (SIGCHLD);
+-    _HANDLE_SIG (SIGCONT);
+-    _HANDLE_SIG (SIGSTOP);
+-    _HANDLE_SIG (SIGTSTP);
+-    _HANDLE_SIG (SIGTTIN);
+-    _HANDLE_SIG (SIGTTOU);
+-    _HANDLE_SIG (SIGBUS);
+-#ifdef SIGPOLL
+-    _HANDLE_SIG (SIGPOLL);
+-#endif
+-    _HANDLE_SIG (SIGPROF);
+-    _HANDLE_SIG (SIGSYS);
+-    _HANDLE_SIG (SIGTRAP);
+-    _HANDLE_SIG (SIGURG);
+-    _HANDLE_SIG (SIGVTALRM);
+-    _HANDLE_SIG (SIGXCPU);
+-    _HANDLE_SIG (SIGXFSZ);
+-#undef _HANDLE_SIG
+-    default:
+-      break;
+-    }
+-  return "UNKNOWN_SIGNAL";
+-}
+-
+-typedef struct
+-{
+-  GMainLoop *loop;
+-  GAsyncResult *res;
+-} SpawnData;
+-
+-static void
+-spawn_cb (GObject       *source_object,
+-          GAsyncResult  *res,
+-          gpointer       user_data)
+-{
+-  SpawnData *data = (SpawnData *)user_data;
+-  data->res = (GAsyncResult*)g_object_ref (res);
+-  g_main_loop_quit (data->loop);
+-}
+-
+ static bool
+ js_polkit_spawn (JSContext  *cx,
+                  unsigned    js_argc,
+@@ -1440,21 +1211,21 @@ js_polkit_spawn (JSContext  *cx,
+   g_main_context_push_thread_default (context);
+ 
+   data.loop = loop;
+-  utils_spawn ((const gchar *const *) argv,
+-               10, /* timeout_seconds */
+-               NULL, /* cancellable */
+-               spawn_cb,
+-               &data);
++  polkit_backend_common_spawn ((const gchar *const *) argv,
++                               10, /* timeout_seconds */
++                               NULL, /* cancellable */
++                               polkit_backend_common_spawn_cb,
++                               &data);
+ 
+   g_main_loop_run (loop);
+ 
+   g_main_context_pop_thread_default (context);
+ 
+-  if (!utils_spawn_finish (data.res,
+-                           &exit_status,
+-                           &standard_output,
+-                           &standard_error,
+-                           &error))
++  if (!polkit_backend_common_spawn_finish (data.res,
++                                           &exit_status,
++                                           &standard_output,
++                                           &standard_error,
++                                           &error))
+     {
+       JS_ReportErrorUTF8 (cx,
+                       "Error spawning helper: %s (%s, %d)",
+@@ -1477,7 +1248,7 @@ js_polkit_spawn (JSContext  *cx,
+         {
+           g_string_append_printf (gstr,
+                                   "Helper was signaled with signal %s (%d)",
+-                                  get_signal_name (WTERMSIG (exit_status)),
++                                  polkit_backend_common_get_signal_name (WTERMSIG (exit_status)),
+                                   WTERMSIG (exit_status));
+         }
+       g_string_append_printf (gstr, ", stdout=`%s', stderr=`%s'",
+@@ -1542,381 +1313,5 @@ js_polkit_user_is_in_netgroup (JSContext  *cx,
+   return ret;
+ }
+ 
+-
+-
+ /* ---------------------------------------------------------------------------------------------------- */
+ 
+-typedef struct
+-{
+-  GSimpleAsyncResult *simple; /* borrowed reference */
+-  GMainContext *main_context; /* may be NULL */
+-
+-  GCancellable *cancellable;  /* may be NULL */
+-  gulong cancellable_handler_id;
+-
+-  GPid child_pid;
+-  gint child_stdout_fd;
+-  gint child_stderr_fd;
+-
+-  GIOChannel *child_stdout_channel;
+-  GIOChannel *child_stderr_channel;
+-
+-  GSource *child_watch_source;
+-  GSource *child_stdout_source;
+-  GSource *child_stderr_source;
+-
+-  guint timeout_seconds;
+-  gboolean timed_out;
+-  GSource *timeout_source;
+-
+-  GString *child_stdout;
+-  GString *child_stderr;
+-
+-  gint exit_status;
+-} UtilsSpawnData;
+-
+-static void
+-utils_child_watch_from_release_cb (GPid     pid,
+-                                   gint     status,
+-                                   gpointer user_data)
+-{
+-}
+-
+-static void
+-utils_spawn_data_free (UtilsSpawnData *data)
+-{
+-  if (data->timeout_source != NULL)
+-    {
+-      g_source_destroy (data->timeout_source);
+-      data->timeout_source = NULL;
+-    }
+-
+-  /* Nuke the child, if necessary */
+-  if (data->child_watch_source != NULL)
+-    {
+-      g_source_destroy (data->child_watch_source);
+-      data->child_watch_source = NULL;
+-    }
+-
+-  if (data->child_pid != 0)
+-    {
+-      GSource *source;
+-      kill (data->child_pid, SIGTERM);
+-      /* OK, we need to reap for the child ourselves - we don't want
+-       * to use waitpid() because that might block the calling
+-       * thread (the child might handle SIGTERM and use several
+-       * seconds for cleanup/rollback).
+-       *
+-       * So we use GChildWatch instead.
+-       *
+-       * Avoid taking a references to ourselves. but note that we need
+-       * to pass the GSource so we can nuke it once handled.
+-       */
+-      source = g_child_watch_source_new (data->child_pid);
+-      g_source_set_callback (source,
+-                             (GSourceFunc) utils_child_watch_from_release_cb,
+-                             source,
+-                             (GDestroyNotify) g_source_destroy);
+-      /* attach source to the global default main context */
+-      g_source_attach (source, NULL);
+-      g_source_unref (source);
+-      data->child_pid = 0;
+-    }
+-
+-  if (data->child_stdout != NULL)
+-    {
+-      g_string_free (data->child_stdout, TRUE);
+-      data->child_stdout = NULL;
+-    }
+-
+-  if (data->child_stderr != NULL)
+-    {
+-      g_string_free (data->child_stderr, TRUE);
+-      data->child_stderr = NULL;
+-    }
+-
+-  if (data->child_stdout_channel != NULL)
+-    {
+-      g_io_channel_unref (data->child_stdout_channel);
+-      data->child_stdout_channel = NULL;
+-    }
+-  if (data->child_stderr_channel != NULL)
+-    {
+-      g_io_channel_unref (data->child_stderr_channel);
+-      data->child_stderr_channel = NULL;
+-    }
+-
+-  if (data->child_stdout_source != NULL)
+-    {
+-      g_source_destroy (data->child_stdout_source);
+-      data->child_stdout_source = NULL;
+-    }
+-  if (data->child_stderr_source != NULL)
+-    {
+-      g_source_destroy (data->child_stderr_source);
+-      data->child_stderr_source = NULL;
+-    }
+-
+-  if (data->child_stdout_fd != -1)
+-    {
+-      g_warn_if_fail (close (data->child_stdout_fd) == 0);
+-      data->child_stdout_fd = -1;
+-    }
+-  if (data->child_stderr_fd != -1)
+-    {
+-      g_warn_if_fail (close (data->child_stderr_fd) == 0);
+-      data->child_stderr_fd = -1;
+-    }
+-
+-  if (data->cancellable_handler_id > 0)
+-    {
+-      g_cancellable_disconnect (data->cancellable, data->cancellable_handler_id);
+-      data->cancellable_handler_id = 0;
+-    }
+-
+-  if (data->main_context != NULL)
+-    g_main_context_unref (data->main_context);
+-
+-  if (data->cancellable != NULL)
+-    g_object_unref (data->cancellable);
+-
+-  g_slice_free (UtilsSpawnData, data);
+-}
+-
+-/* called in the thread where @cancellable was cancelled */
+-static void
+-utils_on_cancelled (GCancellable *cancellable,
+-                    gpointer      user_data)
+-{
+-  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
+-  GError *error;
+-
+-  error = NULL;
+-  g_warn_if_fail (g_cancellable_set_error_if_cancelled (cancellable, &error));
+-  g_simple_async_result_take_error (data->simple, error);
+-  g_simple_async_result_complete_in_idle (data->simple);
+-  g_object_unref (data->simple);
+-}
+-
+-static gboolean
+-utils_read_child_stderr (GIOChannel *channel,
+-                         GIOCondition condition,
+-                         gpointer user_data)
+-{
+-  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
+-  gchar buf[1024];
+-  gsize bytes_read;
+-
+-  g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
+-  g_string_append_len (data->child_stderr, buf, bytes_read);
+-  return TRUE;
+-}
+-
+-static gboolean
+-utils_read_child_stdout (GIOChannel *channel,
+-                         GIOCondition condition,
+-                         gpointer user_data)
+-{
+-  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
+-  gchar buf[1024];
+-  gsize bytes_read;
+-
+-  g_io_channel_read_chars (channel, buf, sizeof buf, &bytes_read, NULL);
+-  g_string_append_len (data->child_stdout, buf, bytes_read);
+-  return TRUE;
+-}
+-
+-static void
+-utils_child_watch_cb (GPid     pid,
+-                      gint     status,
+-                      gpointer user_data)
+-{
+-  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
+-  gchar *buf;
+-  gsize buf_size;
+-
+-  if (g_io_channel_read_to_end (data->child_stdout_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
+-    {
+-      g_string_append_len (data->child_stdout, buf, buf_size);
+-      g_free (buf);
+-    }
+-  if (g_io_channel_read_to_end (data->child_stderr_channel, &buf, &buf_size, NULL) == G_IO_STATUS_NORMAL)
+-    {
+-      g_string_append_len (data->child_stderr, buf, buf_size);
+-      g_free (buf);
+-    }
+-
+-  data->exit_status = status;
+-
+-  /* ok, child watch is history, make sure we don't free it in spawn_data_free() */
+-  data->child_pid = 0;
+-  data->child_watch_source = NULL;
+-
+-  /* we're done */
+-  g_simple_async_result_complete_in_idle (data->simple);
+-  g_object_unref (data->simple);
+-}
+-
+-static gboolean
+-utils_timeout_cb (gpointer user_data)
+-{
+-  UtilsSpawnData *data = (UtilsSpawnData *)user_data;
+-
+-  data->timed_out = TRUE;
+-
+-  /* ok, timeout is history, make sure we don't free it in spawn_data_free() */
+-  data->timeout_source = NULL;
+-
+-  /* we're done */
+-  g_simple_async_result_complete_in_idle (data->simple);
+-  g_object_unref (data->simple);
+-
+-  return FALSE; /* remove source */
+-}
+-
+-static void
+-utils_spawn (const gchar *const  *argv,
+-             guint                timeout_seconds,
+-             GCancellable        *cancellable,
+-             GAsyncReadyCallback  callback,
+-             gpointer             user_data)
+-{
+-  UtilsSpawnData *data;
+-  GError *error;
+-
+-  data = g_slice_new0 (UtilsSpawnData);
+-  data->timeout_seconds = timeout_seconds;
+-  data->simple = g_simple_async_result_new (NULL,
+-                                            callback,
+-                                            user_data,
+-                                            (gpointer*)utils_spawn);
+-  data->main_context = g_main_context_get_thread_default ();
+-  if (data->main_context != NULL)
+-    g_main_context_ref (data->main_context);
+-
+-  data->cancellable = cancellable != NULL ? (GCancellable*)g_object_ref (cancellable) : NULL;
+-
+-  data->child_stdout = g_string_new (NULL);
+-  data->child_stderr = g_string_new (NULL);
+-  data->child_stdout_fd = -1;
+-  data->child_stderr_fd = -1;
+-
+-  /* the life-cycle of UtilsSpawnData is tied to its GSimpleAsyncResult */
+-  g_simple_async_result_set_op_res_gpointer (data->simple, data, (GDestroyNotify) utils_spawn_data_free);
+-
+-  error = NULL;
+-  if (data->cancellable != NULL)
+-    {
+-      /* could already be cancelled */
+-      error = NULL;
+-      if (g_cancellable_set_error_if_cancelled (data->cancellable, &error))
+-        {
+-          g_simple_async_result_take_error (data->simple, error);
+-          g_simple_async_result_complete_in_idle (data->simple);
+-          g_object_unref (data->simple);
+-          goto out;
+-        }
+-
+-      data->cancellable_handler_id = g_cancellable_connect (data->cancellable,
+-                                                            G_CALLBACK (utils_on_cancelled),
+-                                                            data,
+-                                                            NULL);
+-    }
+-
+-  error = NULL;
+-  if (!g_spawn_async_with_pipes (NULL, /* working directory */
+-                                 (gchar **) argv,
+-                                 NULL, /* envp */
+-                                 GSpawnFlags(G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD),
+-                                 NULL, /* child_setup */
+-                                 NULL, /* child_setup's user_data */
+-                                 &(data->child_pid),
+-                                 NULL, /* gint *stdin_fd */
+-                                 &(data->child_stdout_fd),
+-                                 &(data->child_stderr_fd),
+-                                 &error))
+-    {
+-      g_prefix_error (&error, "Error spawning: ");
+-      g_simple_async_result_take_error (data->simple, error);
+-      g_simple_async_result_complete_in_idle (data->simple);
+-      g_object_unref (data->simple);
+-      goto out;
+-    }
+-
+-  if (timeout_seconds > 0)
+-    {
+-      data->timeout_source = g_timeout_source_new_seconds (timeout_seconds);
+-      g_source_set_priority (data->timeout_source, G_PRIORITY_DEFAULT);
+-      g_source_set_callback (data->timeout_source, utils_timeout_cb, data, NULL);
+-      g_source_attach (data->timeout_source, data->main_context);
+-      g_source_unref (data->timeout_source);
+-    }
+-
+-  data->child_watch_source = g_child_watch_source_new (data->child_pid);
+-  g_source_set_callback (data->child_watch_source, (GSourceFunc) utils_child_watch_cb, data, NULL);
+-  g_source_attach (data->child_watch_source, data->main_context);
+-  g_source_unref (data->child_watch_source);
+-
+-  data->child_stdout_channel = g_io_channel_unix_new (data->child_stdout_fd);
+-  g_io_channel_set_flags (data->child_stdout_channel, G_IO_FLAG_NONBLOCK, NULL);
+-  data->child_stdout_source = g_io_create_watch (data->child_stdout_channel, G_IO_IN);
+-  g_source_set_callback (data->child_stdout_source, (GSourceFunc) utils_read_child_stdout, data, NULL);
+-  g_source_attach (data->child_stdout_source, data->main_context);
+-  g_source_unref (data->child_stdout_source);
+-
+-  data->child_stderr_channel = g_io_channel_unix_new (data->child_stderr_fd);
+-  g_io_channel_set_flags (data->child_stderr_channel, G_IO_FLAG_NONBLOCK, NULL);
+-  data->child_stderr_source = g_io_create_watch (data->child_stderr_channel, G_IO_IN);
+-  g_source_set_callback (data->child_stderr_source, (GSourceFunc) utils_read_child_stderr, data, NULL);
+-  g_source_attach (data->child_stderr_source, data->main_context);
+-  g_source_unref (data->child_stderr_source);
+-
+- out:
+-  ;
+-}
+-
+-gboolean
+-utils_spawn_finish (GAsyncResult   *res,
+-                    gint           *out_exit_status,
+-                    gchar         **out_standard_output,
+-                    gchar         **out_standard_error,
+-                    GError        **error)
+-{
+-  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
+-  UtilsSpawnData *data;
+-  gboolean ret = FALSE;
+-
+-  g_return_val_if_fail (G_IS_ASYNC_RESULT (res), FALSE);
+-  g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+-
+-  g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == utils_spawn);
+-
+-  if (g_simple_async_result_propagate_error (simple, error))
+-    goto out;
+-
+-  data = (UtilsSpawnData*)g_simple_async_result_get_op_res_gpointer (simple);
+-
+-  if (data->timed_out)
+-    {
+-      g_set_error (error,
+-                   G_IO_ERROR,
+-                   G_IO_ERROR_TIMED_OUT,
+-                   "Timed out after %d seconds",
+-                   data->timeout_seconds);
+-      goto out;
+-    }
+-
+-  if (out_exit_status != NULL)
+-    *out_exit_status = data->exit_status;
+-
+-  if (out_standard_output != NULL)
+-    *out_standard_output = g_strdup (data->child_stdout->str);
+-
+-  if (out_standard_error != NULL)
+-    *out_standard_error = g_strdup (data->child_stderr->str);
+-
+-  ret = TRUE;
+-
+- out:
+-  return ret;
+-}
+diff --git a/test/data/etc/polkit-1/rules.d/10-testing.rules b/test/data/etc/polkit-1/rules.d/10-testing.rules
+index 98bf062..e346b5d 100644
+--- a/test/data/etc/polkit-1/rules.d/10-testing.rules
++++ b/test/data/etc/polkit-1/rules.d/10-testing.rules
+@@ -189,8 +189,10 @@ polkit.addRule(function(action, subject) {
+                 ;
+         } catch (error) {
+             if (error == "Terminating runaway script")
+-                return polkit.Result.YES;
+-            return polkit.Result.NO;
++                // Inverted logic to accomodate Duktape's model as well, which
++                // will always fail with negation, on timeouts
++                return polkit.Result.NO;
++            return polkit.Result.YES;
+         }
+     }
+ });
+diff --git a/test/polkitbackend/test-polkitbackendjsauthority.c b/test/polkitbackend/test-polkitbackendjsauthority.c
+index f97e0e0..2103b17 100644
+--- a/test/polkitbackend/test-polkitbackendjsauthority.c
++++ b/test/polkitbackend/test-polkitbackendjsauthority.c
+@@ -328,7 +328,7 @@ static const RulesTestCase rules_test_cases[] = {
+     "net.company.run_away_script",
+     "unix-user:root",
+     NULL,
+-    POLKIT_IMPLICIT_AUTHORIZATION_AUTHORIZED,
++    POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED,
+   },
+ 
+   {
+-- 
+2.20.1
+
diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-jsauthority-ensure-to-call-JS_Init-and-JS_ShutDown-e.patch b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-jsauthority-ensure-to-call-JS_Init-and-JS_ShutDown-e.patch
deleted file mode 100644
index 9e9755e..0000000
--- a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit/0003-jsauthority-ensure-to-call-JS_Init-and-JS_ShutDown-e.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From 7799441b9aa55324160deefbc65f9d918b8c94c1 Mon Sep 17 00:00:00 2001
-From: Xi Ruoyao <xry111@mengyan1223.wang>
-Date: Tue, 10 Aug 2021 18:52:56 +0800
-Subject: [PATCH] jsauthority: ensure to call JS_Init() and JS_ShutDown()
- exactly once
-
-Before this commit, we were calling JS_Init() in
-polkit_backend_js_authority_class_init and never called JS_ShutDown.
-This is actually a misusage of SpiderMonkey API.  Quote from a comment
-in js/Initialization.h (both mozjs-78 and mozjs-91):
-
-    It is currently not possible to initialize SpiderMonkey multiple
-    times (that is, calling JS_Init/JSAPI methods/JS_ShutDown in that
-    order, then doing so again).
-
-This misusage does not cause severe issues with mozjs-78.  However, when
-we eventually port jsauthority to use mozjs-91, bad thing will happen:
-see the test failure mentioned in #150.
-
-This commit is tested with both mozjs-78 and mozjs-91, all tests pass
-with it.
-
-Upstream-Status: Submitted [https://gitlab.freedesktop.org/polkit/polkit/-/merge_requests/91]
-Signed-off-by: Alexander Kanavin <alex@linutronix.de>
----
- src/polkitbackend/polkitbackendjsauthority.cpp | 10 +++++++---
- 1 file changed, 7 insertions(+), 3 deletions(-)
-
-diff --git a/src/polkitbackend/polkitbackendjsauthority.cpp b/src/polkitbackend/polkitbackendjsauthority.cpp
-index 41d8d5c..38dc001 100644
---- a/src/polkitbackend/polkitbackendjsauthority.cpp
-+++ b/src/polkitbackend/polkitbackendjsauthority.cpp
-@@ -75,6 +75,13 @@
- 
- /* ---------------------------------------------------------------------------------------------------- */
- 
-+static class JsInitHelperType
-+{
-+public:
-+	JsInitHelperType() { JS_Init(); }
-+	~JsInitHelperType() { JS_ShutDown(); }
-+} JsInitHelper;
-+
- struct _PolkitBackendJsAuthorityPrivate
- {
-   gchar **rules_dirs;
-@@ -589,7 +596,6 @@ polkit_backend_js_authority_finalize (GObject *object)
-   delete authority->priv->js_polkit;
- 
-   JS_DestroyContext (authority->priv->cx);
--  /* JS_ShutDown (); */
- 
-   G_OBJECT_CLASS (polkit_backend_js_authority_parent_class)->finalize (object);
- }
-@@ -665,8 +671,6 @@ polkit_backend_js_authority_class_init (PolkitBackendJsAuthorityClass *klass)
- 
- 
-   g_type_class_add_private (klass, sizeof (PolkitBackendJsAuthorityPrivate));
--
--  JS_Init ();
- }
- 
- /* ---------------------------------------------------------------------------------------------------- */
diff --git a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit_0.119.bb b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit_0.119.bb
index d763617..66bbf73 100644
--- a/meta-openembedded/meta-oe/recipes-extended/polkit/polkit_0.119.bb
+++ b/meta-openembedded/meta-oe/recipes-extended/polkit/polkit_0.119.bb
@@ -1,11 +1,11 @@
 SUMMARY = "PolicyKit Authorization Framework"
 DESCRIPTION = "The polkit package is an application-level toolkit for defining and handling the policy that allows unprivileged processes to speak to privileged processes."
 HOMEPAGE = "http://www.freedesktop.org/wiki/Software/polkit"
-LICENSE = "LGPLv2+"
+LICENSE = "LGPL-2.0-or-later"
 LIC_FILES_CHKSUM = "file://COPYING;md5=155db86cdbafa7532b41f390409283eb \
                     file://src/polkit/polkit.h;beginline=1;endline=20;md5=0a8630b0133176d0504c87a0ded39db4"
 
-DEPENDS = "expat glib-2.0 intltool-native mozjs-91"
+DEPENDS = "expat glib-2.0 intltool-native duktape"
 
 inherit autotools gtk-doc pkgconfig useradd systemd gobject-introspection features_check
 
@@ -25,16 +25,22 @@
 SRC_URI = "http://www.freedesktop.org/software/polkit/releases/polkit-${PV}.tar.gz \
            ${@bb.utils.contains('DISTRO_FEATURES', 'pam', '${PAM_SRC_URI}', '', d)} \
            file://0003-make-netgroup-support-optional.patch \
-           file://0002-jsauthority-port-to-mozjs-91.patch \
-           file://0003-jsauthority-ensure-to-call-JS_Init-and-JS_ShutDown-e.patch \
+           file://0001-pkexec-local-privilege-escalation-CVE-2021-4034.patch \
+           file://0002-CVE-2021-4115-GHSL-2021-077-fix.patch \
+           file://0003-Added-support-for-duktape-as-JS-engine.patch \
            "
 SRC_URI[sha256sum] = "c8579fdb86e94295404211285fee0722ad04893f0213e571bd75c00972fd1f5c"
 
 EXTRA_OECONF = "--with-os-type=moblin \
                 --disable-man-pages \
                 --disable-libelogind \
+                --with-duktape \
                "
 
+do_configure:prepend () {
+    rm -f ${S}/buildutil/lt*.m4 ${S}/buildutil/libtool.m4
+}
+
 do_compile:prepend () {
     export GIR_EXTRA_LIBS_PATH="${B}/src/polkit/.libs"
 }