mod_lua.c revision 9704354e1cdddd5d367daef753ab621926095480
c79e39ad568d9af854765f64049534044ef6c034nd/**
2d0611ffc9f91c5fc2ddccb93f9a3d17791ae650takashi * Licensed to the Apache Software Foundation (ASF) under one or more
c79e39ad568d9af854765f64049534044ef6c034nd * contributor license agreements. See the NOTICE file distributed with
d3e250aab242db84d14060985b5db675a731d548nd * this work for additional information regarding copyright ownership.
c79e39ad568d9af854765f64049534044ef6c034nd * The ASF licenses this file to You under the Apache License, Version 2.0
c79e39ad568d9af854765f64049534044ef6c034nd * (the "License"); you may not use this file except in compliance with
c79e39ad568d9af854765f64049534044ef6c034nd * the License. You may obtain a copy of the License at
c79e39ad568d9af854765f64049534044ef6c034nd *
c79e39ad568d9af854765f64049534044ef6c034nd * http://www.apache.org/licenses/LICENSE-2.0
c79e39ad568d9af854765f64049534044ef6c034nd *
4a56677aad9b66a36f3dc9fddbca8dc1230ad471rbowen * Unless required by applicable law or agreed to in writing, software
4a56677aad9b66a36f3dc9fddbca8dc1230ad471rbowen * distributed under the License is distributed on an "AS IS" BASIS,
4b575a6b6704b516f22d65a3ad35696d7b9ba372rpluem * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
c79e39ad568d9af854765f64049534044ef6c034nd * See the License for the specific language governing permissions and
c79e39ad568d9af854765f64049534044ef6c034nd * limitations under the License.
*/
#include "mod_lua.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "lua_apr.h"
#include "lua_config.h"
APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ap_lua, AP_LUA, int, lua_open,
(lua_State *L, apr_pool_t *p),
(L, p), OK, DECLINED)
APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ap_lua, AP_LUA, int, lua_request,
(lua_State *L, request_rec *r),
(L, r), OK, DECLINED)
module AP_MODULE_DECLARE_DATA lua_module;
/**
* error reporting if lua has an error.
* Extracts the error from lua stack and prints
*/
static void report_lua_error(lua_State *L, request_rec *r)
{
const char *lua_response;
r->status = HTTP_INTERNAL_SERVER_ERROR;
r->content_type = "text/html";
ap_rputs("<b>Error!</b>\n", r);
ap_rputs("<p>", r);
lua_response = lua_tostring(L, -1);
ap_rputs(lua_response, r);
ap_rputs("</p>\n", r);
ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, r->pool, "Lua error: %s",
lua_response);
}
static void lua_open_callback(lua_State *L, apr_pool_t *p, void *ctx)
{
ap_lua_init(L, p);
ap_lua_load_apache2_lmodule(L);
ap_lua_load_request_lmodule(L, p);
ap_lua_load_config_lmodule(L);
}
static int lua_open_hook(lua_State *L, apr_pool_t *p)
{
lua_open_callback(L, p, NULL);
return OK;
}
/*
static apr_status_t luahood(ap_filter_t *f, apr_bucket_brigade *bb) {
apr_bucket* b;
apr_status_t rs;
for ( b = APR_BRIGADE_FIRST(bb);
b != APR_BRIGADE_SENTINEL(bb);
b = APR_BUCKET_NEXT(b))
{
if (APR_BUCKET_IS_EOS(b)) {kl
break;
}
const char *buffer;
size_t bytes;
if (( rs = apr_bucket_read(b, &buffer, &bytes, APR_BLOCK_READ))) {
ap_log_rerror(APLOG_MARK, APLOG_WARNING, rs, f->r, "read failure in luahood");
return rs;
}
char *mine = apr_pstrmemdup(f->r->pool, buffer, bytes);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, "sending '%s'", mine);
}
ap_pass_brigade(f->next, bb);
return OK;
}
*/
/**
* "main"
*/
static int lua_handler(request_rec *r)
{
ap_lua_dir_cfg *dcfg;
if (strcmp(r->handler, "lua-script")) {
return DECLINED;
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "handling [%s] in mod_lua",
r->filename);
dcfg = ap_get_module_config(r->per_dir_config, &lua_module);
if (!r->header_only) {
lua_State *L;
const ap_lua_dir_cfg *cfg = ap_get_module_config(r->per_dir_config,
&lua_module);
ap_lua_request_cfg *rcfg = ap_get_module_config(r->request_config,
&lua_module);
mapped_request_details *d = rcfg->mapped_request_details;
ap_lua_vm_spec *spec = NULL;
if (!d) {
d = apr_palloc(r->pool, sizeof(mapped_request_details));
spec = apr_pcalloc(r->pool, sizeof(ap_lua_vm_spec));
spec->scope = dcfg->vm_scope;
spec->pool = spec->scope==APL_SCOPE_SERVER ? cfg->pool : r->pool;
spec->file = r->filename;
spec->code_cache_style = dcfg->code_cache_style;
spec->package_paths = cfg->package_paths;
spec->package_cpaths = cfg->package_cpaths;
spec->vm_server_pool_min = cfg->vm_server_pool_min;
spec->vm_server_pool_max = cfg->vm_server_pool_max;
spec->cb = &lua_open_callback;
spec->cb_arg = NULL;
d->spec = spec;
d->function_name = "handle";
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"request details scope:%u, cache:%u, filename:%s, function:%s",
d->spec->scope,
d->spec->code_cache_style,
d->spec->file,
d->function_name);
L = ap_lua_get_lua_state(r->pool,
d->spec);
if (!L) {
/* TODO annotate spec with failure reason */
r->status = HTTP_INTERNAL_SERVER_ERROR;
ap_rputs("Unable to compile VM, see logs", r);
return HTTP_INTERNAL_SERVER_ERROR;
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "got a vm!");
lua_getglobal(L, d->function_name);
if (!lua_isfunction(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
"lua: Unable to find function %s in %s",
d->function_name,
d->spec->file);
return HTTP_INTERNAL_SERVER_ERROR;
}
ap_lua_run_lua_request(L, r);
if (lua_pcall(L, 1, 0, 0)) {
report_lua_error(L, r);
}
}
return OK;
}
/**
* Like mod_alias except for lua handler fun :-)
*/
static int lua_alias_munger(request_rec *r)
{
ap_lua_vm_spec *spec;
ap_lua_request_cfg *rcfg = ap_get_module_config(r->request_config,
&lua_module);
const ap_lua_dir_cfg *cfg = ap_get_module_config(r->per_dir_config,
&lua_module);
int i;
ap_regmatch_t matches[AP_MAX_REG_MATCH];
for (i = 0; i < cfg->mapped_handlers->nelts; i++) {
const ap_lua_mapped_handler_spec *cnd =
((const ap_lua_mapped_handler_spec **) cfg->mapped_handlers->elts)[i];
if (OK == ap_regexec(cnd->uri_pattern, r->uri, AP_MAX_REG_MATCH,
matches, 0)) {
mapped_request_details *d;
r->handler = "lua-script";
spec = apr_pcalloc(r->pool, sizeof(ap_lua_vm_spec));
spec->file = ap_pregsub(r->pool, cnd->file_name, r->uri,
AP_MAX_REG_MATCH, matches);
spec->scope = cnd->scope;
spec->code_cache_style = cnd->code_cache_style;
spec->bytecode = cnd->bytecode;
spec->bytecode_len = cnd->bytecode_len;
if (spec->scope == APL_SCOPE_ONCE) {
spec->pool = r->pool;
}
d = apr_palloc(r->pool, sizeof(mapped_request_details));
d->function_name = ap_pregsub(r->pool, cnd->function_name, r->uri,
AP_MAX_REG_MATCH, matches);
d->spec = spec;
/* now do replacement on method name where? */
r->filename = apr_pstrdup(r->pool, spec->file);
rcfg->mapped_request_details = d;
return OK;
}
}
return DECLINED;
}
/* ---------------- Configury stuff --------------- */
/** harnesses for magic hooks **/
static int lua_request_rec_hook_harness(request_rec *r, const char *name)
{
int rc;
lua_State *L;
ap_lua_vm_spec *spec;
ap_lua_server_cfg *server_cfg = ap_get_module_config(r->server->module_config,
&lua_module);
const ap_lua_dir_cfg *cfg = ap_get_module_config(r->per_dir_config,
&lua_module);
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, name,
APR_HASH_KEY_STRING);
if (hook_specs) {
int i;
for (i = 0; i < hook_specs->nelts; i++) {
ap_lua_mapped_handler_spec *hook_spec =
((ap_lua_mapped_handler_spec **) hook_specs->elts)[i];
if (hook_spec == NULL) {
continue;
}
spec = apr_pcalloc(r->pool, sizeof(ap_lua_vm_spec));
spec->file = hook_spec->file_name;
spec->code_cache_style = hook_spec->code_cache_style;
spec->scope = hook_spec->scope;
spec->vm_server_pool_min = cfg->vm_server_pool_min;
spec->vm_server_pool_max = cfg->vm_server_pool_max;
spec->bytecode = hook_spec->bytecode;
spec->bytecode_len = hook_spec->bytecode_len;
spec->pool = spec->scope==APL_SCOPE_SERVER ? cfg->pool : r->pool;
spec->package_paths = cfg->package_paths;
spec->package_cpaths = cfg->package_cpaths;
spec->cb = &lua_open_callback;
spec->cb_arg = NULL;
apr_filepath_merge(&spec->file, server_cfg->root_path,
spec->file, APR_FILEPATH_NOTRELATIVE, r->pool);
L = ap_lua_get_lua_state(r->pool, spec);
if (!L) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
"lua: Failed to obtain lua interpreter for %s %s",
hook_spec->function_name, hook_spec->file_name);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (hook_spec->function_name != NULL) {
lua_getglobal(L, hook_spec->function_name);
if (!lua_isfunction(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
"lua: Unable to find function %s in %s",
hook_spec->function_name,
hook_spec->file_name);
return HTTP_INTERNAL_SERVER_ERROR;
}
ap_lua_run_lua_request(L, r);
}
else {
int t;
ap_lua_run_lua_request(L, r);
t = lua_gettop(L);
lua_setglobal(L, "r");
lua_settop(L, t);
}
if (lua_pcall(L, 1, 1, 0)) {
report_lua_error(L, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
rc = DECLINED;
if (lua_isnumber(L, -1)) {
rc = lua_tointeger(L, -1);
}
if (rc != DECLINED) {
return rc;
}
}
}
return DECLINED;
}
static apr_size_t config_getstr(ap_configfile_t *cfg, char *buf,
size_t bufsiz)
{
apr_size_t i = 0;
if (cfg->getstr) {
apr_status_t rc = (cfg->getstr) (buf, bufsiz, cfg->param);
if (rc == APR_SUCCESS) {
i = strlen(buf);
if (i && buf[i - 1] == '\n')
++cfg->line_number;
}
else {
buf[0] = '\0';
i = 0;
}
}
else {
while (i < bufsiz) {
char ch;
apr_status_t rc = (cfg->getch) (&ch, cfg->param);
if (rc != APR_SUCCESS)
break;
buf[i++] = ch;
if (ch == '\n') {
++cfg->line_number;
break;
}
}
}
return i;
}
typedef struct cr_ctx
{
cmd_parms *cmd;
ap_configfile_t *cfp;
size_t startline;
const char *endstr;
char buf[HUGE_STRING_LEN];
} cr_ctx;
/* Okay, this deserves a little explaination -- in order for the errors that lua
* generates to be 'accuarate', including line numbers, we basically inject
* N line number new lines into the 'top' of the chunk reader.....
*
* be happy. this is cool.
*
*/
static const char *lf =
"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
#define N_LF 32
static const char *direct_chunkreader(lua_State *lvm, void *udata,
size_t *plen)
{
const char *p;
struct cr_ctx *ctx = udata;
if (ctx->startline) {
*plen = ctx->startline > N_LF ? N_LF : ctx->startline;
ctx->startline -= *plen;
return lf;
}
*plen = config_getstr(ctx->cfp, ctx->buf, HUGE_STRING_LEN);
for (p = ctx->buf; isspace(*p); ++p);
if (p[0] == '<' && p[1] == '/') {
apr_size_t i = 0;
while (i < strlen(ctx->endstr)) {
if (tolower(p[i + 2]) != ctx->endstr[i])
return ctx->buf;
++i;
}
*plen = 0;
return NULL;
}
/*fprintf(stderr, "buf read: %s\n", ctx->buf); */
return ctx->buf;
}
static int ldump_writer(lua_State *L, const void *b, size_t size, void *B)
{
(void) L;
luaL_addlstring((luaL_Buffer *) B, (const char *) b, size);
return 0;
}
typedef struct hack_section_baton
{
const char *name;
ap_lua_mapped_handler_spec *spec;
} hack_section_baton;
/* You can be unhappy now.
*
* This is uncool.
*
* When you create a <Section handler in httpd, the only 'easy' way to create
* a directory context is to parse the section, and convert it into a 'normal'
* Configureation option, and then collapse the entire section, in memory,
* back into the parent section -- from which you can then get the new directive
* invoked.... anyways. evil. Rici taught me how to do this hack :-)
*/
static const char *hack_section_handler(cmd_parms *cmd, void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
ap_directive_t *directive = cmd->directive;
hack_section_baton *baton = directive->data;
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, baton->name,
APR_HASH_KEY_STRING);
if (!hook_specs) {
hook_specs = apr_array_make(cmd->pool, 2,
sizeof(ap_lua_mapped_handler_spec *));
apr_hash_set(cfg->hooks, apr_pstrdup(cmd->pool, baton->name),
APR_HASH_KEY_STRING, hook_specs);
}
baton->spec->scope = cfg->vm_scope;
*(ap_lua_mapped_handler_spec **) apr_array_push(hook_specs) = baton->spec;
return NULL;
}
static const char *register_named_block_function_hook(const char *name,
cmd_parms *cmd,
void *mconfig,
const char *line)
{
const char *function;
ap_lua_mapped_handler_spec *spec;
if (line && line[0] == '>') {
function = NULL;
}
else {
const char *word;
apr_size_t wordlen;
word = ap_getword_conf(cmd->temp_pool, &line);
wordlen = strlen(word);
if (wordlen == 0 || word[wordlen - 1] != '>') {
return apr_pstrcat(cmd->pool, cmd->directive->directive,
"> takes exactly one argument", NULL);
}
else {
function = apr_pstrndup(cmd->pool, word, wordlen - 1);
}
}
spec = apr_pcalloc(cmd->pool, sizeof(ap_lua_mapped_handler_spec));
{
cr_ctx ctx;
char buf[32];
lua_State *lvm;
char *tmp;
int rv;
ap_directive_t **current;
hack_section_baton *baton;
apr_snprintf(buf, sizeof(buf), "%u", cmd->config_file->line_number);
spec->file_name = apr_pstrcat(cmd->pool, cmd->config_file->name, ":",
buf, NULL);
if (function) {
spec->function_name = (char *) function;
}
else {
function = NULL;
}
spec->code_cache_style = APL_CODE_CACHE_FOREVER;
ctx.cmd = cmd;
tmp = apr_pstrdup(cmd->pool, cmd->err_directive->directive + 1);
ap_str_tolower(tmp);
ctx.endstr = tmp;
ctx.cfp = cmd->config_file;
ctx.startline = cmd->config_file->line_number;
/* This lua State is used only to compile the input strings -> bytecode, so we don't need anything extra. */
lvm = luaL_newstate();
lua_settop(lvm, 0);
rv = lua_load(lvm, direct_chunkreader, &ctx, spec->file_name);
if (rv != 0) {
const char *errstr = apr_pstrcat(cmd->pool, "Lua Error:",
lua_tostring(lvm, -1), NULL);
lua_close(lvm);
return errstr;
}
else {
luaL_Buffer b;
luaL_buffinit(lvm, &b);
lua_dump(lvm, ldump_writer, &b);
luaL_pushresult(&b);
spec->bytecode_len = lua_strlen(lvm, -1);
spec->bytecode = apr_pstrmemdup(cmd->pool, lua_tostring(lvm, -1),
spec->bytecode_len);
lua_close(lvm);
}
current = mconfig;
/* Here, we have to replace our current config node for the next pass */
if (!*current) {
*current = apr_pcalloc(cmd->pool, sizeof(**current));
}
baton = apr_pcalloc(cmd->pool, sizeof(hack_section_baton));
baton->name = name;
baton->spec = spec;
(*current)->filename = cmd->config_file->name;
(*current)->line_num = cmd->config_file->line_number;
(*current)->directive = apr_pstrdup(cmd->pool, "Lua_____ByteCodeHack");
(*current)->args = NULL;
(*current)->data = baton;
}
return NULL;
}
static const char *register_named_file_function_hook(const char *name,
cmd_parms *cmd,
void *_cfg,
const char *file,
const char *function)
{
ap_lua_mapped_handler_spec *spec;
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, name,
APR_HASH_KEY_STRING);
if (!hook_specs) {
hook_specs = apr_array_make(cmd->pool, 2,
sizeof(ap_lua_mapped_handler_spec *));
apr_hash_set(cfg->hooks, apr_pstrdup(cmd->pool, name),
APR_HASH_KEY_STRING, hook_specs);
}
spec = apr_pcalloc(cmd->pool, sizeof(ap_lua_mapped_handler_spec));
spec->file_name = apr_pstrdup(cmd->pool, file);
spec->function_name = apr_pstrdup(cmd->pool, function);
spec->scope = cfg->vm_scope;
spec->code_cache_style = APL_CODE_CACHE_STAT;
/*
int code_cache_style;
char *function_name;
char *file_name;
int scope;
*/
*(ap_lua_mapped_handler_spec **) apr_array_push(hook_specs) = spec;
return NULL;
}
static int lua_check_user_id_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "check_user_id");
}
static int lua_translate_name_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "translate_name");
}
static int lua_fixup_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "fixups");
}
static int lua_map_to_storage_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "map_to_storage");
}
static int lua_type_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "type_checker");
}
static int lua_access_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "access_checker");
}
static int lua_auth_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "auth_checker");
}
static void lua_insert_filter_harness(request_rec *r)
{
/* ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, "LuaHookInsertFilter not yet implemented"); */
}
static int lua_quick_harness(request_rec *r, int lookup)
{
if (lookup) {
return DECLINED;
}
return lua_request_rec_hook_harness(r, "quick");
}
static const char *register_translate_name_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("translate_name", cmd, _cfg,
file, function);
}
static const char *register_translate_name_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("translate_name", cmd, _cfg,
line);
}
static const char *register_fixups_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("fixups", cmd, _cfg, file,
function);
}
static const char *register_fixups_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("fixups", cmd, _cfg, line);
}
static const char *register_map_to_storage_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("map_to_storage", cmd, _cfg,
file, function);
}
static const char *register_map_to_storage_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("map_to_storage", cmd, _cfg,
line);
}
static const char *register_check_user_id_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("check_user_id", cmd, _cfg, file,
function);
}
static const char *register_check_user_id_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("check_user_id", cmd, _cfg,
line);
}
static const char *register_type_checker_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("type_checker", cmd, _cfg, file,
function);
}
static const char *register_type_checker_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("type_checker", cmd, _cfg,
line);
}
static const char *register_access_checker_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("access_checker", cmd, _cfg,
file, function);
}
static const char *register_access_checker_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("access_checker", cmd, _cfg,
line);
}
static const char *register_auth_checker_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("auth_checker", cmd, _cfg, file,
function);
}
static const char *register_auth_checker_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("auth_checker", cmd, _cfg,
line);
}
static const char *register_insert_filter_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return "LuaHookInsertFilter not yet implemented";
}
static const char *register_quick_hook(cmd_parms *cmd, void *_cfg,
const char *file, const char *function)
{
return register_named_file_function_hook("quick", cmd, _cfg, file,
function);
}
static const char *register_quick_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return "LuaQuickHook in an inline block not yet implemented";
}
static const char *register_package_helper(cmd_parms *cmd, const char *arg,
apr_array_header_t *dir_array)
{
apr_status_t rv;
ap_lua_server_cfg *server_cfg =
ap_get_module_config(cmd->server->module_config, &lua_module);
char *fixed_filename;
rv = apr_filepath_merge(&fixed_filename, server_cfg->root_path, arg,
APR_FILEPATH_NOTRELATIVE, cmd->pool);
if (rv != APR_SUCCESS) {
return apr_psprintf(cmd->pool,
"Unable to build full path to file, %s", arg);
}
*(const char **) apr_array_push(dir_array) = fixed_filename;
return NULL;
}
/**
* Called for config directive which looks like
* LuaPackagePath /lua/package/path/mapped/thing/like/this/?.lua
*/
static const char *register_package_dir(cmd_parms *cmd, void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
return register_package_helper(cmd, arg, cfg->package_paths);
}
/**
* Called for config directive which looks like
* LuaPackageCPath /lua/package/path/mapped/thing/like/this/?.so
*/
static const char *register_package_cdir(cmd_parms *cmd, void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
return register_package_helper(cmd, arg, cfg->package_cpaths);
}
/**
* Called for config directive which looks like
* LuaCodeCache
*/
static const char *register_code_cache(cmd_parms *cmd, void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
if (strcmp("stat", arg) == 0) {
cfg->code_cache_style = APL_CODE_CACHE_STAT;
}
else if (strcmp("forever", arg) == 0) {
cfg->code_cache_style = APL_CODE_CACHE_FOREVER;
}
else if (strcmp("never", arg) == 0) {
cfg->code_cache_style = APL_CODE_CACHE_NEVER;
}
else {
return apr_psprintf(cmd->pool,
"Invalid value for LuaCodeCache, '%s', "
"acceptable values are 'stat', 'forever', and "
"'never'",
arg);
}
return NULL;
}
static const char *register_lua_scope(cmd_parms *cmd, void *_cfg,
const char *scope, const char *min,
const char *max)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
if (strcmp("once", scope) == 0) {
cfg->vm_scope = APL_SCOPE_ONCE;
}
else if (strcmp("request", scope) == 0) {
cfg->vm_scope = APL_SCOPE_REQUEST;
}
else if (strcmp("conn", scope) == 0) {
cfg->vm_scope = APL_SCOPE_CONN;
}
else if (strcmp("server", scope) == 0) {
cfg->vm_scope = APL_SCOPE_SERVER;
if (min)
cfg->vm_server_pool_min = atoi(min);
if (max)
cfg->vm_server_pool_max = atoi(max);
}
else {
return apr_psprintf(cmd->pool,
"Invalid value for LuaScope, '%s', acceptable "
"values are 'once', 'request', 'conn', and "
"'server'",
scope);
}
return NULL;
}
/**
* Called for config directive which looks like
* AddLuaHandler /alias /path/to/lua/file.lua [handler_function_name]
*/
static const char *lua_map_handler(cmd_parms *cmd, void *_cfg,
const char *path, const char *file,
const char *function)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
apr_status_t rv;
const char *function_name;
function_name = function ? function : "handle";
rv = ap_lua_map_handler(cfg, file, function_name, path, "once");
if (rv != APR_SUCCESS) {
return apr_psprintf(cmd->pool,
"Unable to configure a lua handler for path "
"'%s', handler %s#%s",
path, file, function_name);
}
return NULL;
}
static const char *register_lua_root(cmd_parms *cmd, void *_cfg,
const char *root)
{
/* ap_lua_dir_cfg* cfg = (ap_lua_dir_cfg*)_cfg; */
ap_lua_server_cfg *cfg = ap_get_module_config(cmd->server->module_config,
&lua_module);
cfg->root_path = root;
return NULL;
}
/*******************************/
command_rec lua_commands[] = {
AP_INIT_TAKE1("LuaRoot", register_lua_root, NULL, OR_ALL,
"Specify the base path for resolving relative paths for mod_lua directives"),
AP_INIT_TAKE1("LuaPackagePath", register_package_dir, NULL, OR_ALL,
"Add a directory to lua's package.path"),
AP_INIT_TAKE1("LuaPackageCPath", register_package_cdir, NULL, OR_ALL,
"Add a directory to lua's package.cpath"),
AP_INIT_TAKE23("LuaMapHandler", lua_map_handler, NULL, OR_ALL,
"Map a path to a lua handler"),
AP_INIT_TAKE2("LuaHookTranslateName", register_translate_name_hook, NULL,
OR_ALL,
"Provide a hook for the translate name phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookTranslateName", register_translate_name_block,
NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the translate name phase of request processing"),
AP_INIT_TAKE2("LuaHookFixups", register_fixups_hook, NULL, OR_ALL,
"Provide a hook for the fixups phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookFixups", register_fixups_block, NULL,
EXEC_ON_READ | OR_ALL,
"Provide a inline hook for the fixups phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookMapToStorage", register_map_to_storage_hook, NULL,
OR_ALL,
"Provide a hook for the map_to_storage phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookMapToStorage", register_map_to_storage_block,
NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the map_to_storage phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookCheckUserID", register_check_user_id_hook, NULL,
OR_ALL,
"Provide a hook for the check_user_id phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookCheckUserID", register_check_user_id_block,
NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the check_user_id phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookTypeChecker", register_type_checker_hook, NULL,
OR_ALL,
"Provide a hook for the type_checker phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookTypeChecker", register_type_checker_block, NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the type_checker phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookAccessChecker", register_access_checker_hook, NULL,
OR_ALL,
"Provide a hook for the access_checker phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookAccessChecker", register_access_checker_block,
NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the access_checker phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookAuthChecker", register_auth_checker_hook, NULL,
OR_ALL,
"Provide a hook for the auth_checker phase of request processing"),
AP_INIT_RAW_ARGS("<LuaHookAuthChecker", register_auth_checker_block, NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the auth_checker phase of request processing"),
/* todo: test */
AP_INIT_TAKE2("LuaHookInsertFilter", register_insert_filter_hook, NULL,
OR_ALL,
"Provide a hook for the insert_filter phase of request processing"),
AP_INIT_TAKE1("LuaCodeCache", register_code_cache, NULL, OR_ALL,
"Configure the compiled code cache. \
Default is to stat the file each time, options are stat|forever|never"),
AP_INIT_TAKE123("LuaScope", register_lua_scope, NULL, OR_ALL,
"One of once, request, conn, server -- default is once"),
AP_INIT_TAKE2("LuaQuickHandler", register_quick_hook, NULL, OR_ALL,
"Provide a hook for the quick handler of request processing"),
AP_INIT_RAW_ARGS("<LuaQuickHandler", register_quick_block, NULL,
EXEC_ON_READ | OR_ALL,
"Provide a hook for the quick handler of request processing"),
AP_INIT_RAW_ARGS("Lua_____ByteCodeHack", hack_section_handler, NULL,
OR_ALL,
"(internal) Byte code handler"),
{NULL}
};
static void *create_dir_config(apr_pool_t *p, char *dir)
{
ap_lua_dir_cfg *cfg = apr_pcalloc(p, sizeof(ap_lua_dir_cfg));
cfg->package_paths = apr_array_make(p, 2, sizeof(char *));
cfg->package_cpaths = apr_array_make(p, 2, sizeof(char *));
cfg->mapped_handlers =
apr_array_make(p, 1, sizeof(ap_lua_mapped_handler_spec *));
cfg->code_cache_style = APL_CODE_CACHE_STAT;
cfg->pool = p;
cfg->hooks = apr_hash_make(p);
cfg->dir = apr_pstrdup(p, dir);
cfg->vm_scope = APL_SCOPE_ONCE;
return cfg;
}
static int create_request_config(request_rec *r)
{
ap_lua_request_cfg *cfg = apr_palloc(r->pool, sizeof(ap_lua_request_cfg));
cfg->mapped_request_details = NULL;
cfg->request_scoped_vms = apr_hash_make(r->pool);
ap_set_module_config(r->request_config, &lua_module, cfg);
return OK;
}
static void *create_server_config(apr_pool_t *p, server_rec *s)
{
ap_lua_server_cfg *cfg = apr_pcalloc(p, sizeof(ap_lua_server_cfg));
cfg->code_cache = apr_pcalloc(p, sizeof(ap_lua_code_cache));
apr_thread_rwlock_create(&cfg->code_cache->compiled_files_lock, p);
cfg->code_cache->compiled_files = apr_hash_make(p);
cfg->vm_reslists = apr_hash_make(p);
apr_thread_rwlock_create(&cfg->vm_reslists_lock, p);
cfg->code_cache->pool = p;
cfg->root_path = NULL;
return cfg;
}
static int lua_request_hook(lua_State *L, request_rec *r)
{
ap_lua_push_request(L, r);
return OK;
}
static void lua_register_hooks(apr_pool_t *p)
{
/* ap_register_output_filter("luahood", luahood, NULL, AP_FTYPE_RESOURCE); */
ap_hook_handler(lua_handler, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_create_request(create_request_config, NULL, NULL,
APR_HOOK_MIDDLE);
/* http_request.h hooks */
ap_hook_translate_name(lua_translate_name_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_fixups(lua_fixup_harness, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_map_to_storage(lua_map_to_storage_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_check_user_id(lua_check_user_id_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_type_checker(lua_type_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_access_checker(lua_access_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_auth_checker(lua_auth_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_insert_filter(lua_insert_filter_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_quick_handler(lua_quick_harness, NULL, NULL, APR_HOOK_FIRST);
/* ap_hook_translate_name(lua_alias_munger, NULL, NULL, APR_HOOK_MIDDLE); */
ap_hook_translate_name(lua_alias_munger, NULL, NULL, APR_HOOK_MIDDLE);
APR_OPTIONAL_HOOK(ap_lua, lua_open, lua_open_hook, NULL, NULL,
APR_HOOK_REALLY_FIRST);
APR_OPTIONAL_HOOK(ap_lua, lua_request, lua_request_hook, NULL, NULL,
APR_HOOK_REALLY_FIRST);
}
AP_DECLARE_MODULE(lua) = {
STANDARD20_MODULE_STUFF,
create_dir_config, /* create per-dir config structures */
NULL, /* merge per-dir config structures */
create_server_config, /* create per-server config structures */
NULL, /* merge per-server config structures */
lua_commands, /* table of config file commands */
lua_register_hooks /* register hooks */
};