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3948867f51aa4bd9fca398f70d7615ecb36ffe3c
apache/modules/lua/lua_vmprep.c

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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mod_lua.h"
#include "http_log.h"
#include "apr_reslist.h"
#include "apr_uuid.h"
#include "lua_config.h"
#include "apr_file_info.h"
/* forward dec'l from this file */
static void pstack_dump(lua_State* L, apr_pool_t* r, int level, const char* msg) {
ap_log_perror(APLOG_MARK, level, 0, r, "Lua Stack Dump: [%s]", msg);
int i;
int top = lua_gettop(L);
for (i = 1; i<= top; i++) {
int t = lua_type(L, i);
switch(t) {
case LUA_TSTRING: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: '%s'", i, lua_tostring(L, i));
break;
}
case LUA_TUSERDATA: {
ap_log_perror(APLOG_MARK, level, 0, r, "%d: userdata", i);
break;
}
case LUA_TLIGHTUSERDATA: {
ap_log_perror(APLOG_MARK, level, 0, r, "%d: lightuserdata", i);
break;
}
case LUA_TNIL: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: NIL", i);
break;
}
case LUA_TNONE: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: None", i);
break;
}
case LUA_TBOOLEAN: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: %s", i, lua_toboolean(L, i) ? "true" : "false");
break;
}
case LUA_TNUMBER: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: %g", i, lua_tonumber(L, i));
break;
}
case LUA_TTABLE: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: <table>", i);
break;
}
case LUA_TTHREAD: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: <thread>", i);
break;
}
case LUA_TFUNCTION: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: <function>", i);
break;
}
default: {
ap_log_perror(APLOG_MARK, level, 0, r,
"%d: unkown: [%s]", i, lua_typename(L, i));
break;
}
}
}
}
/* BEGIN modules*/
/* BEGIN apache lmodule */
void apl_load_apache2_lmodule(lua_State *L) {
lua_getglobal(L, "package");
lua_getfield(L, -1, "loaded");
lua_newtable(L);
lua_setfield(L, -2, "apache2");
lua_setglobal(L, "apache2");
lua_pop(L, 1); /* empty stack */
lua_getglobal(L, "apache2");
lua_pushinteger(L, OK);
lua_setfield(L, -2, "OK");
lua_pushinteger(L, DECLINED);
lua_setfield(L, -2, "DECLINED");
lua_pushinteger(L, DONE);
lua_setfield(L, -2, "DONE");
lua_pushstring(L, ap_get_server_banner());
lua_setfield(L, -2, "version");
lua_pushinteger(L, HTTP_MOVED_TEMPORARILY);
lua_setfield(L, -2, "HTTP_MOVED_TEMPORARILY");
/*
lua_pushinteger(L, HTTP_CONTINUE);
lua_setfield(L, -2, "HTTP_CONTINUE");
lua_pushinteger(L, HTTP_SWITCHING_PROTOCOLS);
lua_setfield(L, -2, "HTTP_SWITCHING_PROTOCOLS");
lua_pushinteger(L, HTTP_PROCESSING);
lua_setfield(L, -2, "HTTP_PROCESSING");
lua_pushinteger(L, HTTP_OK);
lua_setfield(L, -2, "HTTP_OK");
lua_pushinteger(L, HTTP_CREATED);
lua_setfield(L, -2, "HTTP_CREATED");
lua_pushinteger(L, HTTP_ACCEPTED);
lua_setfield(L, -2, "HTTP_ACCEPTED");
lua_pushinteger(L, HTTP_NON_AUTHORITATIVE);
lua_setfield(L, -2, "HTTP_NON_AUTHORITATIVE");
lua_pushinteger(L, HTTP_NO_CONTENT);
lua_setfield(L, -2, "HTTP_NO_CONTENT");
lua_pushinteger(L, HTTP_RESET_CONTENT);
lua_setfield(L, -2, "HTTP_RESET_CONTENT");
lua_pushinteger(L, HTTP_PARTIAL_CONTENT);
lua_setfield(L, -2, "HTTP_PARTIAL_CONTENT");
lua_pushinteger(L, HTTP_MULTI_STATUS);
lua_setfield(L, -2, "HTTP_MULTI_STATUS");
lua_pushinteger(L, HTTP_MULTIPLE_CHOICES);
lua_setfield(L, -2, "HTTP_MULTIPLE_CHOICES");
lua_pushinteger(L, HTTP_MOVED_PERMANENTLY);
lua_setfield(L, -2, "HTTP_MOVED_PERMANENTLY");
lua_pushinteger(L, HTTP_SEE_OTHER);
lua_setfield(L, -2, "HTTP_SEE_OTHER");
lua_pushinteger(L, HTTP_NOT_MODIFIED);
lua_setfield(L, -2, "HTTP_NOT_MODIFIED");
lua_pushinteger(L, HTTP_USE_PROXY);
lua_setfield(L, -2, "HTTP_USE_PROXY");
lua_pushinteger(L, HTTP_TEMPORARY_REDIRECT);
lua_setfield(L, -2, "HTTP_TEMPORARY_REDIRECT");
lua_pushinteger(L, HTTP_BAD_REQUEST);
lua_setfield(L, -2, "HTTP_BAD_REQUEST");
lua_pushinteger(L, HTTP_UNAUTHORIZED);
lua_setfield(L, -2, "HTTP_UNAUTHORIZED");
lua_pushinteger(L, HTTP_PAYMENT_REQUIRED);
lua_setfield(L, -2, "HTTP_PAYMENT_REQUIRED");
lua_pushinteger(L, HTTP_FORBIDDEN);
lua_setfield(L, -2, "HTTP_FORBIDDEN");
lua_pushinteger(L, HTTP_NOT_FOUND);
lua_setfield(L, -2, "HTTP_NOT_FOUND");
lua_pushinteger(L, HTTP_METHOD_NOT_ALLOWED);
lua_setfield(L, -2, "HTTP_METHOD_NOT_ALLOWED");
lua_pushinteger(L, HTTP_NOT_ACCEPTABLE);
lua_setfield(L, -2, "HTTP_NOT_ACCEPTABLE");
lua_pushinteger(L, HTTP_PROXY_AUTHENTICATION_REQUIRED);
lua_setfield(L, -2, "HTTP_PROXY_AUTHENTICATION_REQUIRED");
lua_pushinteger(L, HTTP_REQUEST_TIME_OUT);
lua_setfield(L, -2, "HTTP_REQUEST_TIME_OUT");
lua_pushinteger(L, HTTP_CONFLICT);
lua_setfield(L, -2, "HTTP_CONFLICT");
lua_pushinteger(L, HTTP_GONE);
lua_setfield(L, -2, "HTTP_GONE");
lua_pushinteger(L, HTTP_LENGTH_REQUIRED);
lua_setfield(L, -2, "HTTP_LENGTH_REQUIRED");
lua_pushinteger(L, HTTP_PRECONDITION_FAILED);
lua_setfield(L, -2, "HTTP_PRECONDITION_FAILED");
lua_pushinteger(L, HTTP_REQUEST_ENTITY_TOO_LARGE);
lua_setfield(L, -2, "HTTP_REQUEST_ENTITY_TOO_LARGE");
lua_pushinteger(L, HTTP_REQUEST_URI_TOO_LARGE);
lua_setfield(L, -2, "HTTP_REQUEST_URI_TOO_LARGE");
lua_pushinteger(L, HTTP_UNSUPPORTED_MEDIA_TYPE);
lua_setfield(L, -2, "HTTP_UNSUPPORTED_MEDIA_TYPE");
lua_pushinteger(L, HTTP_RANGE_NOT_SATISFIABLE);
lua_setfield(L, -2, "HTTP_RANGE_NOT_SATISFIABLE");
lua_pushinteger(L, HTTP_EXPECTATION_FAILED);
lua_setfield(L, -2, "HTTP_EXPECTATION_FAILED");
lua_pushinteger(L, HTTP_UNPROCESSABLE_ENTITY);
lua_setfield(L, -2, "HTTP_UNPROCESSABLE_ENTITY");
lua_pushinteger(L, HTTP_LOCKED);
lua_setfield(L, -2, "HTTP_LOCKED");
lua_pushinteger(L, HTTP_FAILED_DEPENDENCY);
lua_setfield(L, -2, "HTTP_FAILED_DEPENDENCY");
lua_pushinteger(L, HTTP_UPGRADE_REQUIRED);
lua_setfield(L, -2, "HTTP_UPGRADE_REQUIRED");
lua_pushinteger(L, HTTP_INTERNAL_SERVER_ERROR);
lua_setfield(L, -2, "HTTP_INTERNAL_SERVER_ERROR");
lua_pushinteger(L, HTTP_NOT_IMPLEMENTED);
lua_setfield(L, -2, "HTTP_NOT_IMPLEMENTED");
lua_pushinteger(L, HTTP_BAD_GATEWAY);
lua_setfield(L, -2, "HTTP_BAD_GATEWAY");
lua_pushinteger(L, HTTP_SERVICE_UNAVAILABLE);
lua_setfield(L, -2, "HTTP_SERVICE_UNAVAILABLE");
lua_pushinteger(L, HTTP_GATEWAY_TIME_OUT);
lua_setfield(L, -2, "HTTP_GATEWAY_TIME_OUT");
lua_pushinteger(L, HTTP_VERSION_NOT_SUPPORTED);
lua_setfield(L, -2, "HTTP_VERSION_NOT_SUPPORTED");
lua_pushinteger(L, HTTP_VARIANT_ALSO_VARIES);
lua_setfield(L, -2, "HTTP_VARIANT_ALSO_VARIES");
lua_pushinteger(L, HTTP_INSUFFICIENT_STORAGE);
lua_setfield(L, -2, "HTTP_INSUFFICIENT_STORAGE");
lua_pushinteger(L, HTTP_NOT_EXTENDED);
lua_setfield(L, -2, "HTTP_NOT_EXTENDED");
*/
}
/* END apache2 lmodule */
/* END library functions */
/* callback for cleaning up a lua vm when pool is closed */
static apr_status_t cleanup_lua(void *l) {
lua_close((lua_State*) l);
return APR_SUCCESS;
}
static void munge_path(lua_State *L,
const char *field,
const char *sub_pat,
const char *rep_pat,
apr_pool_t *pool,
apr_array_header_t *paths,
const char *file) {
lua_getglobal(L, "package");
lua_getfield(L, -1, field);
const char* current = lua_tostring(L, -1);
const char* parent_dir = ap_make_dirstr_parent(pool, file);
const char* pattern = apr_pstrcat(pool, parent_dir, sub_pat, NULL);
luaL_gsub(L, current, rep_pat, pattern);
lua_setfield(L, -3, field);
lua_getfield(L, -2, field);
const char* modified = lua_tostring(L, -1);
lua_pop(L, 2);
char * part = apr_pstrdup(pool, modified);
int i;
for (i = 0; i < paths->nelts; i++) {
const char *new_path = ((const char**)paths->elts)[i];
part = apr_pstrcat(pool, part, ";", new_path, NULL);
}
lua_pushstring(L, part);
lua_setfield(L, -2, field);
lua_pop(L, 1); /* pop "package" off the stack */
}
lua_State* apl_get_lua_state(apr_pool_t* lifecycle_pool,
char* file,
apr_array_header_t* package_paths,
apr_array_header_t* package_cpaths,
apl_lua_state_open_callback cb,
void* btn) {
lua_State* L;
ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, lifecycle_pool, "obtaining lua_State");
if (!apr_pool_userdata_get((void**)&L, file, lifecycle_pool)) {
ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, lifecycle_pool, "creating lua_State with file %s", file);
/* not available, so create */
L = luaL_newstate();
luaL_openlibs(L);
if (package_paths)
munge_path(L, "path", "?.lua", "./?.lua", lifecycle_pool, package_paths, file);
if (package_cpaths)
munge_path(L, "cpath", "?.so", "./?.so", lifecycle_pool, package_cpaths, file);
if (cb) {
cb(L, lifecycle_pool, btn);
}
luaL_loadfile(L, file);
lua_pcall(L, 0, LUA_MULTRET, 0);
apr_pool_userdata_set(L, file, &cleanup_lua, lifecycle_pool);
lua_pushlightuserdata(L, lifecycle_pool);
lua_setfield(L, LUA_REGISTRYINDEX, "Apache2.Wombat.pool");
}
return L;
}
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