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Fix some lua handling; add args for lua plugins/handlers

This commit is contained in:
Stefan Bühler 2010-02-14 15:48:25 +01:00
parent f43f70de6e
commit e0370fac79
6 changed files with 63 additions and 32 deletions
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2
include/lighttpd/config_lua.h
View File

@ -5,7 +5,7 @@
#include <lualib.h>
LI_API gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename, liAction **pact, gboolean allow_setup);
LI_API gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename, liAction **pact, gboolean allow_setup, liValue *args);
LI_API gboolean li_lua_config_publish_str_hash(liServer *srv, lua_State *L, GHashTable *ht, int (*wrapper)(liServer *srv, lua_State *L, gpointer data));
LI_API int li_lua_config_handle_server_action(liServer *srv, lua_State *L, gpointer _sa);

30
src/main/config_lua.c
View File

@ -23,11 +23,7 @@ static liValue* lua_params_to_value(liServer *srv, lua_State *L) {
val = li_value_new_list();
g_array_set_size(val->data.list, lua_gettop(L) - 1);
while (lua_gettop(L) > 1) {
if (NULL == (subval = li_value_from_lua(srv, L))) {
ERROR(srv, "Couldn't convert value from lua (lua type '%s')", lua_typename(L, lua_type(L, -1)));
li_value_free(val);
return NULL;
}
subval = li_value_from_lua(srv, L);
g_array_index(val->data.list, liValue*, lua_gettop(L) - 1) = subval;
}
return val;
@ -140,17 +136,18 @@ int li_lua_config_handle_server_action(liServer *srv, lua_State *L, gpointer _sa
liServerAction *sa = (liServerAction*) _sa;
liValue *val;
liAction *a;
gboolean dolock = (L == srv->L);
lua_checkstack(L, 16);
val = lua_params_to_value(srv, L);
li_lua_unlock(srv);
if (dolock) li_lua_unlock(srv);
/* TRACE(srv, "%s", "Creating action"); */
a = sa->create_action(srv, sa->p, val, sa->userdata);
li_value_free(val);
li_lua_lock(srv);
if (dolock) li_lua_lock(srv);
if (NULL == a) {
lua_pushstring(L, "creating action failed");
@ -164,14 +161,15 @@ int li_lua_config_handle_server_setup(liServer *srv, lua_State *L, gpointer _ss)
liServerSetup *ss = (liServerSetup*) _ss;
liValue *val;
gboolean res;
gboolean dolock = (L == srv->L);
lua_checkstack(L, 16);
val = lua_params_to_value(srv, L);
li_lua_unlock(srv);
if (dolock) li_lua_unlock(srv);
/* TRACE(srv, "%s", "Calling setup"); */
res = ss->setup(srv, ss->p, val, ss->userdata);
li_lua_lock(srv);
if (dolock) li_lua_lock(srv);
if (!res) {
li_value_free(val);
@ -183,7 +181,7 @@ int li_lua_config_handle_server_setup(liServer *srv, lua_State *L, gpointer _ss)
return 0;
}
gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename, liAction **pact, gboolean allow_setup) {
gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename, liAction **pact, gboolean allow_setup, liValue *args) {
int errfunc;
int lua_stack_top;
gboolean dolock = (L == srv->L);
@ -213,8 +211,14 @@ gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename,
li_lua_push_lvalues_dict(srv, L);
errfunc = li_lua_push_traceback(L, 0);
if (lua_pcall(L, 0, 1, errfunc)) {
/* arguments for config: local filename, args = ... */
/* 1. filename */
lua_pushstring(L, filename);
/* 2. args */
li_lua_push_value(L, args);
errfunc = li_lua_push_traceback(L, 2);
if (lua_pcall(L, 2, 0, errfunc)) {
ERROR(srv, "lua_pcall(): %s", lua_tostring(L, -1));
/* cleanup stack */
@ -230,8 +234,6 @@ gboolean li_config_lua_load(lua_State *L, liServer *srv, const gchar *filename,
}
lua_remove(L, errfunc);
lua_pop(L, 1); /* pop the ret-value */
lua_getfield(L, LUA_GLOBALSINDEX, "actions");
*pact = li_lua_get_action_ref(L, -1);
lua_pop(L, 1);

2
src/main/config_parser.rl
View File

@ -750,7 +750,7 @@
return FALSE;
}
if (!li_config_lua_load(srv->L, srv, val->data.string->str, &a, TRUE)) {
if (!li_config_lua_load(srv->L, srv, val->data.string->str, &a, TRUE, NULL)) {
ERROR(srv, "include_lua '%s' failed", val->data.string->str);
li_value_free(name);
li_value_free(val);

2
src/main/lighttpd.c
View File

@ -107,7 +107,7 @@ int main(int argc, char *argv[]) {
}
else {
#ifdef HAVE_LUA_H
li_config_lua_load(srv->L, srv, config_path, &srv->mainaction, TRUE);
li_config_lua_load(srv->L, srv, config_path, &srv->mainaction, TRUE, NULL);
/* lua config frontend */
#else
g_print("lua config frontend not available\n");

7
src/main/value_lua.c
View File

@ -77,7 +77,7 @@ liValue* li_value_from_lua(liServer *srv, lua_State *L) {
switch (lua_type(L, -1)) {
case LUA_TNIL:
lua_pop(L, 1);
return li_value_new_none();
return NULL;
case LUA_TBOOLEAN:
val = li_value_new_bool(lua_toboolean(L, -1));
@ -155,6 +155,11 @@ GString* li_lua_togstring(lua_State *L, int ndx) {
}
int li_lua_push_value(lua_State *L, liValue *value) {
if (NULL == value) {
lua_pushnil(L);
return 1;
}
switch (value->type) {
case LI_VALUE_NONE:
lua_pushnil(L);

52
src/modules/mod_lua.c
View File

@ -5,18 +5,20 @@
* mod_lua
*
* Setups:
* lua.plugin filename, [ options ]
* lua.plugin filename, [ options ], <lua-args>
* - No options available yet, can be omitted
* - Can register setup.* and action.* callbacks (like any c module)
* via creating a setups / actions table in the global lua namespace
* Options:
* none
* Actions:
* lua.handler filename, [ "ttl": 300 ]
* lua.handler filename, [ "ttl": 300 ], <lua-args>
* - Basically the same as include_lua (no setup.* calls allowed), but loads the script
* in a worker specific lua_State, so it doesn't use the server wide lua lock.
* - You can give a ttl, after which the file is checked for modifications
* and reloaded. The default value 0 disables reloading.
* - The third parameter is available as second parameter in the lua file:
* local filename, args = ...
*
* Example config:
* lua.handler "/etc/lighttpd/pathrewrite.lua";
@ -62,6 +64,7 @@ typedef struct lua_config lua_config;
struct lua_config {
GString *filename;
guint ttl;
liValue *args;
lua_worker_config *worker_config;
GList mconf_link;
@ -101,7 +104,7 @@ static liHandlerResult lua_handle(liVRequest *vr, gpointer param, gpointer *cont
li_action_release(vr->wrk->srv, wc->act);
wc->act = NULL;
if (!li_config_lua_load(vr->wrk->L, vr->wrk->srv, conf->filename->str, &wc->act, FALSE) || !wc->act) {
if (!li_config_lua_load(vr->wrk->L, vr->wrk->srv, conf->filename->str, &wc->act, FALSE, conf->args) || !wc->act) {
VR_ERROR(vr, "lua.handler: couldn't load '%s'", conf->filename->str);
return LI_HANDLER_ERROR;
}
@ -127,6 +130,7 @@ static void lua_config_free(liServer *srv, gpointer param) {
g_slice_free1(sizeof(lua_worker_config) * srv->worker_count, wc);
}
g_string_free(conf->filename, TRUE);
li_value_free(conf->args);
if (conf->mconf_link.prev) { /* still in LI_SERVER_INIT */
module_config *mc = conf->p->data;
@ -136,12 +140,13 @@ static void lua_config_free(liServer *srv, gpointer param) {
g_slice_free(lua_config, conf);
}
static lua_config* lua_config_new(liServer *srv, liPlugin *p, GString *filename, guint ttl) {
static lua_config* lua_config_new(liServer *srv, liPlugin *p, GString *filename, guint ttl, liValue *args) {
module_config *mc = p->data;
lua_config *conf = g_slice_new0(lua_config);
conf->filename = filename;
conf->ttl = ttl;
conf->p = p;
conf->args = args;
if (LI_SERVER_INIT != g_atomic_int_get(&srv->state)) {
conf->worker_config = g_slice_alloc0(sizeof(lua_worker_config) * srv->worker_count);
@ -158,7 +163,7 @@ static const GString /* lua option names */
;
static liAction* lua_handler_create(liServer *srv, liPlugin* p, liValue *val, gpointer userdata) {
liValue *v_filename = NULL, *v_options = NULL;
liValue *v_filename = NULL, *v_options = NULL, *v_args = NULL;
lua_config *conf;
guint ttl = 0;
UNUSED(userdata);
@ -170,6 +175,10 @@ static liAction* lua_handler_create(liServer *srv, liPlugin* p, liValue *val, gp
GArray *l = val->data.list;
if (l->len > 0) v_filename = g_array_index(l, liValue*, 0);
if (l->len > 1) v_options = g_array_index(l, liValue*, 1);
if (l->len > 2) {
v_args = g_array_index(l, liValue*, 2);
g_array_index(l, liValue*, 2) = NULL;
}
}
}
@ -179,10 +188,12 @@ static liAction* lua_handler_create(liServer *srv, liPlugin* p, liValue *val, gp
if (!v_filename) {
ERROR(srv, "%s", "lua.handler expects at least a filename, or a filename and some options");
li_value_free(v_args);
return NULL;
}
if (v_options && v_options->type != LI_VALUE_HASH) {
ERROR(srv, "%s", "lua.handler expects options in a hash");
li_value_free(v_args);
return NULL;
}
@ -209,11 +220,12 @@ static liAction* lua_handler_create(liServer *srv, liPlugin* p, liValue *val, gp
}
}
conf = lua_config_new(srv, p, li_value_extract_string(v_filename), ttl);
conf = lua_config_new(srv, p, li_value_extract_string(v_filename), ttl, v_args);
return li_action_new_function(lua_handle, NULL, lua_config_free, conf);
option_failed:
li_value_free(v_args);
return NULL;
}
@ -227,7 +239,9 @@ struct luaPlugin {
};
static int push_args(lua_State *L, liValue *val) {
if (val->type == LI_VALUE_LIST) {
if (NULL == val) {
return 0;
} else if (val->type == LI_VALUE_LIST) {
GArray *list = val->data.list;
guint i;
for (i = 0; i < list->len; i++) {
@ -417,7 +431,7 @@ static void lua_plugin_init(liServer *srv, liPlugin *p, gpointer userdata) {
p->free = lua_plugin_free;
}
static gboolean lua_plugin_load(liServer *srv, liPlugin *p, GString *filename) {
static gboolean lua_plugin_load(liServer *srv, liPlugin *p, GString *filename, liValue* args) {
int errfunc;
int lua_stack_top;
lua_State *L = srv->L;
@ -449,8 +463,14 @@ static gboolean lua_plugin_load(liServer *srv, liPlugin *p, GString *filename) {
lua_pushvalue(L, LUA_GLOBALSINDEX);
lua_setfenv(L, -2);
errfunc = li_lua_push_traceback(L, 0);
if (lua_pcall(L, 0, 0, errfunc)) {
/* arguments for plugin: local filename, args = ... */
/* 1. filename */
lua_pushlstring(L, GSTR_LEN(filename));
/* 2. args */
li_lua_push_value(L, args);
errfunc = li_lua_push_traceback(L, 2);
if (lua_pcall(L, 2, 0, errfunc)) {
ERROR(srv, "lua_pcall(): %s", lua_tostring(L, -1));
goto failed_unlock_lua;
}
@ -483,7 +503,7 @@ failed_unlock_lua:
}
static gboolean lua_plugin(liServer *srv, liPlugin *p, liValue *val, gpointer userdata) {
liValue *v_filename = NULL, *v_options = NULL;
liValue *v_filename = NULL, *v_options = NULL, *v_args = NULL;
UNUSED(userdata);
if (val) {
@ -493,6 +513,7 @@ static gboolean lua_plugin(liServer *srv, liPlugin *p, liValue *val, gpointer us
GArray *l = val->data.list;
if (l->len > 0) v_filename = g_array_index(l, liValue*, 0);
if (l->len > 1) v_options = g_array_index(l, liValue*, 1);
if (l->len > 2) v_args = g_array_index(l, liValue*, 2);
}
}
@ -525,20 +546,23 @@ static gboolean lua_plugin(liServer *srv, liPlugin *p, liValue *val, gpointer us
if (g_string_equal(key, &lon_ttl)) {
if (value->type != LI_VALUE_NUMBER || value->data.number <= 0) {
ERROR(srv, "lua.plugin option '%s' expects positive integer as parameter", lon_ttl.str);
return FALSE;
goto option_failed;
}
ttl = value->data.number;
} else {
*/
ERROR(srv, "unknown option for lua.plugin '%s'", key->str);
return FALSE;
goto option_failed;
/*
}
*/
}
}
return lua_plugin_load(srv, p, li_value_extract_string(v_filename));
return lua_plugin_load(srv, p, li_value_extract_string(v_filename), v_args);
option_failed:
return FALSE;
}
static const liPluginOption options[] = {