Add pbx_lua as a method of doing extensions

Reported by: mnicholson
Patch by: mnicholson
Closes issue #11140


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@88250 65c4cc65-6c06-0410-ace0-fbb531ad65f3

build_tools/menuselect-deps.in

@@ -11,6 +11,7 @@ IMAP_TK=@PBX_IMAP_TK@
 IXJUSER=@PBX_IXJUSER@
 KDE=@PBX_KDE@
 LTDL=@PBX_LTDL@
+LUA=@PBX_LUA@
 NBS=@PBX_NBS@
 NETSNMP=@PBX_NETSNMP@
 NEWT=@PBX_NEWT@

configs/extensions.lua.sample

@@ -0,0 +1,208 @@
+
+
+CONSOLE = "Console/dsp" -- Console interface for demo
+--CONSOLE = "Zap/1"
+--CONSOLE = "Phone/phone0"
+
+IAXINFO = "guest"       -- IAXtel username/password
+--IAXINFO = "myuser:mypass"
+
+TRUNK = "Zap/g2"
+TRUNKMSD = 1
+-- TRUNK = "IAX2/user:pass@provider"
+
+
+--
+-- Extensions are expected to be defined in a global table named 'extensions'.
+-- The 'extensions' table should have a group of tables in it, each
+-- representing a context.  Extensions are defined in each context.  See below
+-- for examples.
+--
+-- This file can be automatically included in the extensions.conf file using
+-- the 'utils/build-extensions-conf.lua' script and a #exec statement in
+-- extensions.conf.
+--
+--   #exec /usr/bin/utils/build-extensions.conf.lua -c
+-- 
+-- The 'execincludes' option must be set to 'yes' in the [options] section of
+-- asterisk.conf for this to work properly.
+-- 
+-- Extension names may be numbers, letters, or combinations thereof. If
+-- an extension name is prefixed by a '_' character, it is interpreted as
+-- a pattern rather than a literal.  In patterns, some characters have
+-- special meanings:
+--                                                                           
+--   X - any digit from 0-9
+--   Z - any digit from 1-9
+--   N - any digit from 2-9
+--   [1235-9] - any digit in the brackets (in this example, 1,2,3,5,6,7,8,9)
+--   . - wildcard, matches anything remaining (e.g. _9011. matches 
+--       anything starting with 9011 excluding 9011 itself)
+--   ! - wildcard, causes the matching process to complete as soon as
+--       it can unambiguously determine that no other matches are possible
+--                                                                           
+-- For example the extension _NXXXXXX would match normal 7 digit
+-- dialings, while _1NXXNXXXXXX would represent an area code plus phone
+-- number preceded by a one.
+-- 
+-- If your extension has special characters in it such as '.' and '!' you must
+-- explicitly make it a string in the tabale definition:
+--
+--   ["_special."] = function;
+--   ["_special!"] = function;
+--
+-- There are no priorities.  All extensions to asterisk appear to have a single
+-- priority as if they consist of a single priority.
+-- 
+-- Each context is defined as a table in the extensions table.  The
+-- context names should be strings.
+--
+-- One context may be included in another context using the 'includes'
+-- extension.  This extension should be set to a table containing a list
+-- of context names.  Do not put references to tables in the includes
+-- table.
+-- 
+--   include = {"a", "b", "c"};
+--
+-- Channel variables can be accessed thorugh the global 'channel' table.
+--
+--   v = channel.var_name
+--   v = channel["var_name"]
+--   v.value
+--   v:get()
+--
+--   channel.var_name = "value"
+--   channel["var_name"] = "value"
+--   v:set("value")
+--
+--   channel.func_name(1,2,3):set("value")
+--   value = channel.func_name(1,2,3):get()
+--
+--   channel["func_name(1|2|3)"]:set("value")
+--   channel["func_name(1|2|3)"] = "value"
+--   value = channel["func_name(1|2|3)"]:get()
+--
+-- Note the use of the ':' operator to access the get() and set()
+-- methods.
+--
+-- Also notice the absence of the following constructs from the examples above:
+--   channel.func_name(1,2,3) = "value"  -- this will NOT work
+--   value = channel.func_name(1,2,3)    -- this will NOT work as expected
+-- 
+--
+-- Dialplan applications can be accessed through the global 'app' table.
+--
+--    app.Dial("Zap/1")
+--    app.dial("Zap/1")
+--
+-- More examples can be found below.
+--
+-- Before starting long running operations, an autoservice should be started
+-- using the autoservice_start() function.  This autoservice will automatically
+-- be stopped before executing applications and dialplan functions and will be
+-- restarted afterwards.  The autoservice can be stopped using
+-- autoservice_stop() and the autoservice_status() function will return true if
+-- an autoservice is currently running.
+--
+
+function outgoing_local(c, e)
+	app.dial("zap/1/" .. e, "", "")
+end
+
+function demo_instruct()
+	app.background("demo-instruct")
+	app.waitexten()
+end
+
+function demo_congrats()
+	app.background("demo-congrats")
+	demo_instruct()
+end
+
+-- Answer the chanel and play the demo sound files
+function demo_start(context, exten)
+	app.wait(1)
+	app.answer()
+
+	channel.TIMEOUT("digit"):set(5)
+	channel.TIMEOUT("response"):set(10)
+	-- app.set("TIMEOUT(digit)=5")
+	-- app.set("TIMEOUT(response)=10")
+
+	demo_congrats(context, exten)
+end
+
+function demo_hangup()
+	app.playback("demo-thanks")
+	app.hangup()
+end
+
+extensions = {
+	demo = {
+		s = demo_start;
+
+		["2"] = function()
+			app.background("demo-moreinfo")
+			demo_instruct()
+		end;
+		["3"] = function ()
+			channel.LANGUAGE():set("fr") -- set the language to french
+			demo_congrats()
+		end;
+
+		["1000"] = function()
+			app.goto("default", "s", 1)
+		end;
+
+		["1234"] = function()
+			app.playback("transfer", "skip")
+			-- do a dial here
+		end;
+
+		["1235"] = function()
+			app.voicemail("1234", "u")
+		end;
+
+		["1236"] = function()
+			app.dial("Console/dsp")
+			app.voicemail(1234, "b")
+		end;
+
+		["#"] = demo_hangup;
+		t = demo_hangup;
+                i = function()
+                        app.playback("invalid")
+                        demo_instruct()
+                end;
+
+		["500"] = function()
+			app.playback("demo-abouttotry")
+			app.dial("IAX2/guest@misery.digium.com/s@default")
+			app.playback("demo-nogo")
+			demo_instruct()
+		end;
+
+		["600"] = function()
+			app.playback("demo-echotest")
+			app.echo()
+			app.playback("demo-echodone")
+			demo_instruct()
+		end;
+
+		["8500"] = function()
+			app.voicemailmain()
+			demo_instruct()
+		end;
+
+	};
+
+	default = {
+		-- by default, do the demo
+		include = {"demo"};
+	};
+
+	["local"] = {
+		["_NXXXXXX"] = outgoing_local;
+	};
+}
+

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 87325 .
+# From configure.ac Revision: 88184 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -765,6 +765,10 @@ LTDL_LIB
 LTDL_INCLUDE
 LTDL_DIR
 PBX_LTDL
+LUA_LIB
+LUA_INCLUDE
+LUA_DIR
+PBX_LUA
 MISDN_LIB
 MISDN_INCLUDE
 MISDN_DIR
@@ -1537,6 +1541,7 @@ Optional Packages:
   --with-isdnnet=PATH     use ISDN4Linux Library files in PATH
   --with-kde=PATH         use KDE files in PATH
   --with-ltdl=PATH        use libtool files in PATH
+  --with-lua=PATH         use Lua files in PATH
   --with-misdn=PATH       use mISDN User Library files in PATH
   --with-nbs=PATH         use Network Broadcast Sound files in PATH
   --with-ncurses=PATH     use ncurses files in PATH
@@ -7991,6 +7996,34 @@ PBX_LTDL=0
 
 
 
+LUA_DESCRIP="Lua"
+LUA_OPTION="lua"
+
+# Check whether --with-lua was given.
+if test "${with_lua+set}" = set; then
+  withval=$with_lua;
+case ${withval} in
+     n|no)
+     USE_LUA=no
+     ;;
+     y|ye|yes)
+     ac_mandatory_list="${ac_mandatory_list} LUA"
+     ;;
+     *)
+     LUA_DIR="${withval}"
+     ac_mandatory_list="${ac_mandatory_list} LUA"
+     ;;
+esac
+
+fi
+
+PBX_LUA=0
+
+
+
+
+
+
 MISDN_DESCRIP="mISDN User Library"
 MISDN_OPTION="misdn"
 
@@ -47072,6 +47105,399 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+LUA_INCLUDE="-I/usr/include/lua5.1"
+LUA_LIB="-llua5.1"
+
+if test "x${PBX_LUA}" != "x1" -a "${USE_LUA}" != "no"; then
+   pbxlibdir=""
+   if test "x${LUA_DIR}" != "x"; then
+      if test -d ${LUA_DIR}/lib; then
+      	 pbxlibdir="-L${LUA_DIR}/lib"
+      else
+      	 pbxlibdir="-L${LUA_DIR}"
+      fi
+   fi
+   pbxfuncname="luaL_newstate"
+   if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
+      AST_LUA_FOUND=yes
+   else
+      as_ac_Lib=`echo "ac_cv_lib_lua5.1_${pbxfuncname}" | $as_tr_sh`
+{ echo "$as_me:$LINENO: checking for ${pbxfuncname} in -llua5.1" >&5
+echo $ECHO_N "checking for ${pbxfuncname} in -llua5.1... $ECHO_C" >&6; }
+if { as_var=$as_ac_Lib; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-llua5.1 ${pbxlibdir}  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${pbxfuncname} ();
+int
+main ()
+{
+return ${pbxfuncname} ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  eval "$as_ac_Lib=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	eval "$as_ac_Lib=no"
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+ac_res=`eval echo '${'$as_ac_Lib'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+if test `eval echo '${'$as_ac_Lib'}'` = yes; then
+  AST_LUA_FOUND=yes
+else
+  AST_LUA_FOUND=no
+fi
+
+   fi
+
+   if test "${AST_LUA_FOUND}" = "yes"; then
+      LUA_LIB="-llua5.1 "
+      LUA_HEADER_FOUND="1"
+      if test "x${LUA_DIR}" != "x"; then
+         LUA_LIB="${pbxlibdir} ${LUA_LIB}"
+	 LUA_INCLUDE="-I${LUA_DIR}/include"
+	 saved_cppflags="${CPPFLAGS}"
+	 CPPFLAGS="${CPPFLAGS} -I${LUA_DIR}/include"
+	 if test "xlua5.1/lua.h" != "x" ; then
+	    as_ac_Header=`echo "ac_cv_header_${LUA_DIR}/include/lua5.1/lua.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${LUA_DIR}/include/lua5.1/lua.h" >&5
+echo $ECHO_N "checking for ${LUA_DIR}/include/lua5.1/lua.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${LUA_DIR}/include/lua5.1/lua.h usability" >&5
+echo $ECHO_N "checking ${LUA_DIR}/include/lua5.1/lua.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${LUA_DIR}/include/lua5.1/lua.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${LUA_DIR}/include/lua5.1/lua.h presence" >&5
+echo $ECHO_N "checking ${LUA_DIR}/include/lua5.1/lua.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${LUA_DIR}/include/lua5.1/lua.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${LUA_DIR}/include/lua5.1/lua.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${LUA_DIR}/include/lua5.1/lua.h" >&5
+echo $ECHO_N "checking for ${LUA_DIR}/include/lua5.1/lua.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  LUA_HEADER_FOUND=1
+else
+  LUA_HEADER_FOUND=0
+fi
+
+
+	 fi
+	 CPPFLAGS="${saved_cppflags}"
+      else
+	 if test "xlua5.1/lua.h" != "x" ; then
+            if test "${ac_cv_header_lua5_1_lua_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for lua5.1/lua.h" >&5
+echo $ECHO_N "checking for lua5.1/lua.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_lua5_1_lua_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_lua5_1_lua_h" >&5
+echo "${ECHO_T}$ac_cv_header_lua5_1_lua_h" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking lua5.1/lua.h usability" >&5
+echo $ECHO_N "checking lua5.1/lua.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <lua5.1/lua.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking lua5.1/lua.h presence" >&5
+echo $ECHO_N "checking lua5.1/lua.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <lua5.1/lua.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: lua5.1/lua.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: lua5.1/lua.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: lua5.1/lua.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: lua5.1/lua.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for lua5.1/lua.h" >&5
+echo $ECHO_N "checking for lua5.1/lua.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_lua5_1_lua_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_lua5_1_lua_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_lua5_1_lua_h" >&5
+echo "${ECHO_T}$ac_cv_header_lua5_1_lua_h" >&6; }
+
+fi
+if test $ac_cv_header_lua5_1_lua_h = yes; then
+  LUA_HEADER_FOUND=1
+else
+  LUA_HEADER_FOUND=0
+fi
+
+
+	 fi
+      fi
+      if test "x${LUA_HEADER_FOUND}" = "x0" ; then
+         LUA_LIB=""
+         LUA_INCLUDE=""
+      else
+         if test "x${pbxfuncname}" = "x" ; then		# only checking headers -> no library
+	    LUA_LIB=""
+	 fi
+         PBX_LUA=1
+         # XXX don't know how to evaluate the description (third argument) in AC_DEFINE_UNQUOTED
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LUA 1
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LUA_VERSION
+_ACEOF
+
+      fi
+   fi
+fi
+
+
 
 if test "x${PBX_RADIUS}" != "x1" -a "${USE_RADIUS}" != "no"; then
    pbxlibdir=""
@@ -56493,6 +56919,10 @@ LTDL_LIB!$LTDL_LIB$ac_delim
 LTDL_INCLUDE!$LTDL_INCLUDE$ac_delim
 LTDL_DIR!$LTDL_DIR$ac_delim
 PBX_LTDL!$PBX_LTDL$ac_delim
+LUA_LIB!$LUA_LIB$ac_delim
+LUA_INCLUDE!$LUA_INCLUDE$ac_delim
+LUA_DIR!$LUA_DIR$ac_delim
+PBX_LUA!$PBX_LUA$ac_delim
 MISDN_LIB!$MISDN_LIB$ac_delim
 MISDN_INCLUDE!$MISDN_INCLUDE$ac_delim
 MISDN_DIR!$MISDN_DIR$ac_delim
@@ -56537,10 +56967,6 @@ PGSQL_LIB!$PGSQL_LIB$ac_delim
 PGSQL_INCLUDE!$PGSQL_INCLUDE$ac_delim
 PGSQL_DIR!$PGSQL_DIR$ac_delim
 PBX_PGSQL!$PBX_PGSQL$ac_delim
-PRI_LIB!$PRI_LIB$ac_delim
-PRI_INCLUDE!$PRI_INCLUDE$ac_delim
-PRI_DIR!$PRI_DIR$ac_delim
-PBX_PRI!$PBX_PRI$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -56582,6 +57008,10 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
+PRI_LIB!$PRI_LIB$ac_delim
+PRI_INCLUDE!$PRI_INCLUDE$ac_delim
+PRI_DIR!$PRI_DIR$ac_delim
+PBX_PRI!$PBX_PRI$ac_delim
 SS7_LIB!$SS7_LIB$ac_delim
 SS7_INCLUDE!$SS7_INCLUDE$ac_delim
 SS7_DIR!$SS7_DIR$ac_delim
@@ -56675,10 +57105,6 @@ AST_DECLARATION_AFTER_STATEMENT!$AST_DECLARATION_AFTER_STATEMENT$ac_delim
 GSM_INTERNAL!$GSM_INTERNAL$ac_delim
 KDEINIT!$KDEINIT$ac_delim
 KDEDIR!$KDEDIR$ac_delim
-NETSNMP_CONFIG!$NETSNMP_CONFIG$ac_delim
-PG_CONFIG!$PG_CONFIG$ac_delim
-PTLIB_CONFIG!$PTLIB_CONFIG$ac_delim
-PWLIBDIR!$PWLIBDIR$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -56720,6 +57146,10 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
+NETSNMP_CONFIG!$NETSNMP_CONFIG$ac_delim
+PG_CONFIG!$PG_CONFIG$ac_delim
+PTLIB_CONFIG!$PTLIB_CONFIG$ac_delim
+PWLIBDIR!$PWLIBDIR$ac_delim
 PWLIB_INCDIR!$PWLIB_INCDIR$ac_delim
 PWLIB_LIBDIR!$PWLIB_LIBDIR$ac_delim
 PWLIB_PLATFORM!$PWLIB_PLATFORM$ac_delim
@@ -56744,7 +57174,7 @@ CURL_CONFIG!$CURL_CONFIG$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 22; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 26; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5

configure.ac

@@ -193,6 +193,7 @@ AST_EXT_LIB_SETUP([IMAP_TK], [UW IMAP Toolkit], [imap])
 AST_EXT_LIB_SETUP([ISDNNET], [ISDN4Linux Library], [isdnnet])
 AST_EXT_LIB_SETUP([KDE], [KDE], [kde])
 AST_EXT_LIB_SETUP([LTDL], [libtool], [ltdl])
+AST_EXT_LIB_SETUP([LUA], [Lua], [lua])
 AST_EXT_LIB_SETUP([MISDN], [mISDN User Library], [misdn])
 AST_EXT_LIB_SETUP([NBS], [Network Broadcast Sound], [nbs])
 AST_EXT_LIB_SETUP([NCURSES], [ncurses], [ncurses])
@@ -980,6 +981,10 @@ fi
 
 AC_LANG_POP
 
+LUA_INCLUDE="-I/usr/include/lua5.1"
+LUA_LIB="-llua5.1"
+AST_EXT_LIB_CHECK([LUA], [lua5.1], [luaL_newstate], [lua5.1/lua.h]) 
+
 AST_EXT_LIB_CHECK([RADIUS], [radiusclient-ng], [rc_read_config], [radiusclient-ng.h])
 
 AST_EXT_LIB_CHECK([SPEEX], [speex], [speex_encode], [speex/speex.h], [-lm])

include/asterisk/autoconfig.h.in

@@ -409,6 +409,12 @@
 /* Define to indicate the ${LTDL_DESCRIP} library version */
 #undef HAVE_LTDL_VERSION
 
+/* Define this to indicate the ${LUA_DESCRIP} library */
+#undef HAVE_LUA
+
+/* Define to indicate the ${LUA_DESCRIP} library version */
+#undef HAVE_LUA_VERSION
+
 /* Define to 1 if you have the <malloc.h> header file. */
 #undef HAVE_MALLOC_H
 

include/asterisk/pbx.h

@@ -507,6 +507,20 @@ int ast_extension_match(const char *pattern, const char *extension);
 
 int ast_extension_close(const char *pattern, const char *data, int needmore);
 
+/*! 
+ * \brief Determine if one extension should match before another
+ * 
+ * \param a extension to compare with b
+ * \param b extension to compare with a
+ *
+ * Checks whether or extension a should match before extension b
+ *
+ * \retval 0 if the two extensions have equal matching priority
+ * \retval 1 on a > b
+ * \retval -1 on a < b
+ */
+int ast_extension_cmp(const char *a, const char *b);
+
 /*! 
  * \brief Launch a new extension (i.e. new stack)
  * 

main/pbx.c

@@ -806,6 +806,11 @@ static int ext_cmp(const char *a, const char *b)
 		return (ret > 0) ? 1 : -1;
 }
 
+int ast_extension_cmp(const char *a, const char *b)
+{
+	return ext_cmp(a, b);
+}
+
 /*!
  * \internal
  * \brief used ast_extension_{match|close}

makeopts.in

@@ -99,6 +99,9 @@ KDEDIR=@KDEDIR@
 KDE_INCLUDE=@KDE_INCLUDE@
 KDE_LIB=@KDE_LIB@
 
+LUA_INCLUDE=@LUA_INCLUDE@
+LUA_LIB=@LUA_LIB@
+
 NBS_INCLUDE=@NBS_INCLUDE@
 NBS_LIB=@NBS_LIB@
 

utils/build-extensions-conf.lua

@@ -0,0 +1,81 @@
+#!/usr/bin/env lua
+--[[
+
+This utility can be used to generate an extensions.conf file to match an
+existing extensions.lua file.  As an argument it takes the patch of the
+extensions.lua file to read from, otherwise it uses
+/etc/asterisk/extensions.lua.
+
+This script can also be used to automatically include extensions.lua in
+extensions.conf via a #exec as well.
+
+#exec /usr/bin/build-extensions-conf.lua -c
+
+--]]
+
+usage = [[
+
+Usage:
+  ]] .. arg[0] .. [[ [options] [extensions.lua path]
+
+This utility can generate an extensions.conf file with all of the contexts in
+your extensions.lua file defined as including the Lua switch.  This is useful
+if you want to use your extensions.lua file exclusively.  By using this utility
+you dont't have to create each extension in extensions.conf manually.
+
+The resulting extensions.conf file is printed to standard output.
+
+  --contexts-only, -c	Don't print the [global] or [general] sections.  This
+			is useful for including the generated file into an
+			existing extensions.conf via #include or #exec.
+
+  --help, -h		Print this message.
+
+]]
+
+extensions_file = "/etc/asterisk/extensions.lua"
+
+options = {}
+
+for k, v in ipairs(arg) do
+	if v:sub(1, 1) == "-" then
+		if v == "-h" or v == "--help" then
+			print("match")
+			options["help"] = true
+		elseif v == "-c" or v == "--contexts-only" then
+			options["contexts-only"] = true
+		end
+	else
+		options["extensions-file"] = v
+	end
+end
+
+if options["help"] then
+	io.stderr:write(usage)
+	os.exit(0)
+end
+
+if options["extensions-file"] then
+	extensions_file = options["extensions-file"]
+end
+
+result, error_message = pcall(dofile, extensions_file)
+
+if not result then
+	io.stderr:write(error_message .. "\n")
+	os.exit(1)
+end
+
+if not extensions then
+	io.stderr:write("Error: extensions table not found in '" .. extensions_file .. "'\n")
+	os.exit(1)
+end
+
+if not options["contexts-only"] then
+	io.stdout:write("[general]\n\n[globals]\n\n")
+end
+
+for context, extens in pairs(extensions) do
+	io.stdout:write("[" .. tostring(context) ..  "]\nswitch => Lua\n\n")
+end
+