added package_version() in Lua, removed version module

The package_version() function returns current build information.
Removed the version module instead of fixing, as it's being obsoleted.

.gitignore

@@ -65,7 +65,6 @@ kresd.amalg.c
 libkres.amalg.c
 /doc/kresd.8
 /libkres.pc
-/modules/version/version.lua
 /tags
 /coverage
 /coverage.stats

.luacheckrc

@@ -3,6 +3,7 @@ new_read_globals = {
 	'help',
 	'quit',
 	'hostname',
+	'package_version',
 	'moduledir',
 	'user',
 	'verbose',

config.mk

@@ -2,7 +2,7 @@
 MAJOR := 2
 MINOR := 4
 PATCH := 0
-EXTRA :=
+EXTRA ?=
 ABIVER := 7
 BUILDMODE := dynamic
 HARDENING := yes

daemon/README.rst

@@ -349,6 +349,18 @@ Environment
          end
       end)
 
+.. function:: package_version()
+
+   :return: Current package version.
+
+   This returns current package version (the version of the binary) as a string.
+
+      .. code-block:: lua
+
+         > package_version()
+         2.1.1
+
+
 Network configuration
 ^^^^^^^^^^^^^^^^^^^^^
 

daemon/engine.c

@@ -70,6 +70,7 @@ static int l_help(lua_State *L)
 		"help()\n    show this help\n"
 		"quit()\n    quit\n"
 		"hostname()\n    hostname\n"
+		"package_version()\n    return package version\n"
 		"user(name[, group])\n    change process user (and group)\n"
 		"verbose(true|false)\n    toggle verbose mode\n"
 		"option(opt[, new_val])\n    get/set server option\n"
@@ -209,6 +210,13 @@ static int l_hostname(lua_State *L)
 	return 1;
 }
 
+/** Return server package version. */
+static int l_package_version(lua_State *L)
+{
+	lua_pushliteral(L, PACKAGE_VERSION);
+	return 1;
+}
+
 char *engine_get_moduledir(struct engine *engine) {
 	return engine->moduledir;
 }
@@ -646,6 +654,8 @@ static int init_state(struct engine *engine)
 	lua_setglobal(engine->L, "quit");
 	lua_pushcfunction(engine->L, l_hostname);
 	lua_setglobal(engine->L, "hostname");
+	lua_pushcfunction(engine->L, l_package_version);
+	lua_setglobal(engine->L, "package_version");
 	lua_pushcfunction(engine->L, l_moduledir);
 	lua_setglobal(engine->L, "moduledir");
 	lua_pushcfunction(engine->L, l_verbose);

doc/modules.rst

@@ -23,7 +23,6 @@ Knot DNS Resolver modules
 .. include:: ../modules/dns64/README.rst
 .. include:: ../modules/renumber/README.rst
 .. include:: ../modules/cookies/README.rst
-.. include:: ../modules/version/README.rst
 .. include:: ../modules/bogus_log/README.rst
 .. include:: ../modules/workarounds/README.rst
 .. include:: ../modules/dnstap/README.rst

modules/modules.mk

@@ -35,7 +35,6 @@ modules_TARGETS += bogus_log \
                    http \
                    daf \
                    workarounds \
-                   version \
                    ta_signal_query \
                    priming \
                    serve_stale \