/**
* 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 <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <apr_thread_mutex.h>
#include <apr_pools.h>
#include "lua_apr.h"
#include "lua_config.h"
#include "apr_optional.h"
#include "mod_ssl.h"
#include "mod_auth.h"
#include "util_mutex.h"
#ifdef APR_HAS_THREADS
#include "apr_thread_proc.h"
#endif
/* getpid for *NIX */
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
/* getpid for Windows */
#if APR_HAVE_PROCESS_H
#include <process.h>
#endif
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)
static APR_OPTIONAL_FN_TYPE(ssl_var_lookup) *lua_ssl_val = NULL;
static APR_OPTIONAL_FN_TYPE(ssl_is_https) *lua_ssl_is_https = NULL;
module AP_MODULE_DECLARE_DATA lua_module;
#define AP_LUA_HOOK_FIRST (APR_HOOK_FIRST - 1)
#define AP_LUA_HOOK_LAST (APR_HOOK_LAST + 1)
typedef struct {
const char *name;
const char *file_name;
const char *function_name;
ap_lua_vm_spec *spec;
} lua_authz_provider_spec;
typedef struct {
lua_authz_provider_spec *spec;
apr_array_header_t *args;
} lua_authz_provider_func;
apr_hash_t *lua_authz_providers;
typedef struct
{
apr_bucket_brigade *tmpBucket;
lua_State *L;
ap_lua_vm_spec *spec;
int broken;
} lua_filter_ctx;
#define DEFAULT_LUA_SHMFILE "lua_ivm_shm"
apr_global_mutex_t *lua_ivm_mutex;
apr_shm_t *lua_ivm_shm;
char *lua_ivm_shmfile;
static apr_status_t shm_cleanup_wrapper(void *unused)
{
if (lua_ivm_shm) {
return apr_shm_destroy(lua_ivm_shm);
}
return OK;
}
/**
* 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("<h3>Error!</h3>\n", r);
ap_rputs("<pre>", r);
lua_response = lua_tostring(L, -1);
ap_rputs(ap_escape_html(r->pool, lua_response), r);
ap_rputs("</pre>\n", r);
ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, r->pool, APLOGNO(01471) "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 const char *scope_to_string(unsigned int scope)
{
switch (scope) {
case AP_LUA_SCOPE_ONCE:
case AP_LUA_SCOPE_UNSET:
return "once";
case AP_LUA_SCOPE_REQUEST:
return "request";
case AP_LUA_SCOPE_CONN:
return "conn";
#if APR_HAS_THREADS
case AP_LUA_SCOPE_THREAD:
return "thread";
case AP_LUA_SCOPE_SERVER:
return "server";
#endif
default:
ap_assert(0);
return 0;
}
}
static void ap_lua_release_state(lua_State* L, ap_lua_vm_spec* spec, request_rec* r)
{
char *hash;
apr_reslist_t* reslist = NULL;
if (spec->scope == AP_LUA_SCOPE_SERVER) {
ap_lua_server_spec* sspec = NULL;
lua_settop(L, 0);
lua_getfield(L, LUA_REGISTRYINDEX, "Apache2.Lua.server_spec");
sspec = (ap_lua_server_spec*) lua_touserdata(L, 1);
hash = apr_psprintf(r->pool, "reslist:%s", spec->file);
if (apr_pool_userdata_get((void **)&reslist, hash,
r->server->process->pool) == APR_SUCCESS) {
AP_DEBUG_ASSERT(sspec != NULL);
if (reslist != NULL) {
apr_reslist_release(reslist, sspec);
}
}
}
}
static ap_lua_vm_spec *create_vm_spec(apr_pool_t **lifecycle_pool,
request_rec *r,
const ap_lua_dir_cfg *cfg,
const ap_lua_server_cfg *server_cfg,
const char *filename,
const char *bytecode,
apr_size_t bytecode_len,
const char *function,
const char *what)
{
apr_pool_t *pool;
ap_lua_vm_spec *spec = apr_pcalloc(r->pool, sizeof(ap_lua_vm_spec));
spec->scope = cfg->vm_scope;
spec->pool = r->pool;
spec->package_paths = cfg->package_paths;
spec->package_cpaths = cfg->package_cpaths;
spec->cb = &lua_open_callback;
spec->cb_arg = NULL;
spec->bytecode = bytecode;
spec->bytecode_len = bytecode_len;
spec->codecache = (cfg->codecache == AP_LUA_CACHE_UNSET) ? AP_LUA_CACHE_STAT : cfg->codecache;
spec->vm_min = cfg->vm_min ? cfg->vm_min : 1;
spec->vm_max = cfg->vm_max ? cfg->vm_max : 1;
if (filename) {
char *file;
apr_filepath_merge(&file, server_cfg->root_path,
filename, APR_FILEPATH_NOTRELATIVE, r->pool);
spec->file = file;
}
else {
spec->file = r->filename;
}
ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, APLOGNO(02313)
"%s details: scope: %s, file: %s, func: %s",
what, scope_to_string(spec->scope), spec->file,
function ? function : "-");
switch (spec->scope) {
case AP_LUA_SCOPE_ONCE:
case AP_LUA_SCOPE_UNSET:
apr_pool_create(&pool, r->pool);
break;
case AP_LUA_SCOPE_REQUEST:
pool = r->pool;
break;
case AP_LUA_SCOPE_CONN:
pool = r->connection->pool;
break;
#if APR_HAS_THREADS
case AP_LUA_SCOPE_THREAD:
pool = apr_thread_pool_get(r->connection->current_thread);
break;
case AP_LUA_SCOPE_SERVER:
pool = r->server->process->pool;
break;
#endif
default:
ap_assert(0);
}
*lifecycle_pool = pool;
return spec;
}
static const char* ap_lua_interpolate_string(apr_pool_t* pool, const char* string, const char** values)
{
char *stringBetween;
const char* ret;
int srclen,x,y;
srclen = strlen(string);
ret = "";
y = 0;
for (x=0; x < srclen; x++) {
if (string[x] == '$' && x != srclen-1 && string[x+1] >= '0' && string[x+1] <= '9') {
int v = *(string+x+1) - '0';
if (x-y > 0) {
stringBetween = apr_pstrndup(pool, string+y, x-y);
}
else {
stringBetween = "";
}
ret = apr_pstrcat(pool, ret, stringBetween, values[v], NULL);
y = ++x+1;
}
}
if (x-y > 0 && y > 0) {
stringBetween = apr_pstrndup(pool, string+y, x-y);
ret = apr_pstrcat(pool, ret, stringBetween, NULL);
}
/* If no replacement was made, just return the original string */
else if (y == 0) {
return string;
}
return ret;
}
/**
* "main"
*/
static int lua_handler(request_rec *r)
{
int rc = OK;
if (strcmp(r->handler, "lua-script")) {
return DECLINED;
}
/* Decline the request if the script does not exist (or is a directory),
* rather than just returning internal server error */
if (
(r->finfo.filetype == APR_NOFILE)
|| (r->finfo.filetype & APR_DIR)
) {
return DECLINED;
}
ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(01472)
"handling [%s] in mod_lua", r->filename);
/* XXX: This seems wrong because it may generate wrong headers for HEAD requests */
if (!r->header_only) {
lua_State *L;
apr_pool_t *pool;
const ap_lua_dir_cfg *cfg = ap_get_module_config(r->per_dir_config,
&lua_module);
ap_lua_vm_spec *spec = create_vm_spec(&pool, r, cfg, NULL, NULL, NULL,
0, "handle", "request handler");
L = ap_lua_get_lua_state(pool, spec, r);
if (!L) {
/* TODO annotate spec with failure reason */
r->status = HTTP_INTERNAL_SERVER_ERROR;
ap_rputs("Unable to compile VM, see logs", r);
ap_lua_release_state(L, spec, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, APLOGNO(01474) "got a vm!");
lua_getglobal(L, "handle");
if (!lua_isfunction(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(01475)
"lua: Unable to find entry function '%s' in %s (not a valid function)",
"handle",
spec->file);
ap_lua_release_state(L, spec, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
ap_lua_run_lua_request(L, r);
if (lua_pcall(L, 1, 1, 0)) {
report_lua_error(L, r);
}
if (lua_isnumber(L, -1)) {
rc = lua_tointeger(L, -1);
}
ap_lua_release_state(L, spec, r);
}
return rc;
}
/* ------------------- Input/output content filters ------------------- */
static apr_status_t lua_setup_filter_ctx(ap_filter_t* f, request_rec* r, lua_filter_ctx** c)
{
apr_pool_t *pool;
ap_lua_vm_spec *spec;
int n, rc;
lua_State *L;
lua_filter_ctx *ctx;
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);
ctx = apr_pcalloc(r->pool, sizeof(lua_filter_ctx));
ctx->broken = 0;
*c = ctx;
/* Find the filter that was called.
* XXX: If we were wired with mod_filter, the filter (mod_filters name)
* and the provider (our underlying filters name) need to have matched.
*/
for (n = 0; n < cfg->mapped_filters->nelts; n++) {
ap_lua_filter_handler_spec *hook_spec =
((ap_lua_filter_handler_spec **) cfg->mapped_filters->elts)[n];
if (hook_spec == NULL) {
continue;
}
if (!strcasecmp(hook_spec->filter_name, f->frec->name)) {
spec = create_vm_spec(&pool, r, cfg, server_cfg,
hook_spec->file_name,
NULL,
0,
hook_spec->function_name,
"filter");
L = ap_lua_get_lua_state(pool, spec, r);
if (L) {
L = lua_newthread(L);
}
if (!L) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(02328)
"lua: Failed to obtain lua interpreter for %s %s",
hook_spec->function_name, hook_spec->file_name);
ap_lua_release_state(L, spec, r);
return APR_EGENERAL;
}
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, APLOGNO(02329)
"lua: Unable to find entry function '%s' in %s (not a valid function)",
hook_spec->function_name,
hook_spec->file_name);
ap_lua_release_state(L, spec, r);
return APR_EGENERAL;
}
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);
}
ctx->L = L;
ctx->spec = spec;
/* If a Lua filter is interested in filtering a request, it must first do a yield,
* otherwise we'll assume that it's not interested and pretend we didn't find it.
*/
rc = lua_resume(L, 1);
if (rc == LUA_YIELD) {
if (f->frec->providers == NULL) {
/* Not wired by mod_filter */
apr_table_unset(r->headers_out, "Content-Length");
apr_table_unset(r->headers_out, "Content-MD5");
apr_table_unset(r->headers_out, "ETAG");
}
return OK;
}
else {
ap_lua_release_state(L, spec, r);
return APR_ENOENT;
}
}
}
return APR_ENOENT;
}
static apr_status_t lua_output_filter_handle(ap_filter_t *f, apr_bucket_brigade *pbbIn)
{
request_rec *r = f->r;
int rc;
lua_State *L;
lua_filter_ctx* ctx;
conn_rec *c = r->connection;
apr_bucket *pbktIn;
apr_status_t rv;
/* Set up the initial filter context and acquire the function.
* The corresponding Lua function should yield here.
*/
if (!f->ctx) {
rc = lua_setup_filter_ctx(f,r,&ctx);
if (rc == APR_EGENERAL) {
return HTTP_INTERNAL_SERVER_ERROR;
}
if (rc == APR_ENOENT) {
/* No filter entry found (or the script declined to filter), just pass on the buckets */
ap_remove_output_filter(f);
return ap_pass_brigade(f->next,pbbIn);
}
else {
/* We've got a willing lua filter, setup and check for a prefix */
size_t olen;
apr_bucket *pbktOut;
const char* output = lua_tolstring(ctx->L, 1, &olen);
f->ctx = ctx;
ctx->tmpBucket = apr_brigade_create(r->pool, c->bucket_alloc);
if (olen > 0) {
pbktOut = apr_bucket_heap_create(output, olen, NULL, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(ctx->tmpBucket, pbktOut);
rv = ap_pass_brigade(f->next, ctx->tmpBucket);
apr_brigade_cleanup(ctx->tmpBucket);
if (rv != APR_SUCCESS) {
return rv;
}
}
}
}
ctx = (lua_filter_ctx*) f->ctx;
L = ctx->L;
/* While the Lua function is still yielding, pass in buckets to the coroutine */
if (!ctx->broken) {
for (pbktIn = APR_BRIGADE_FIRST(pbbIn);
pbktIn != APR_BRIGADE_SENTINEL(pbbIn);
pbktIn = APR_BUCKET_NEXT(pbktIn))
{
const char *data;
apr_size_t len;
apr_bucket *pbktOut;
/* read the bucket */
apr_bucket_read(pbktIn,&data,&len,APR_BLOCK_READ);
/* Push the bucket onto the Lua stack as a global var */
lua_pushlstring(L, data, len);
lua_setglobal(L, "bucket");
/* If Lua yielded, it means we have something to pass on */
if (lua_resume(L, 0) == LUA_YIELD) {
size_t olen;
const char* output = lua_tolstring(L, 1, &olen);
if (olen > 0) {
pbktOut = apr_bucket_heap_create(output, olen, NULL,
c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(ctx->tmpBucket, pbktOut);
rv = ap_pass_brigade(f->next, ctx->tmpBucket);
apr_brigade_cleanup(ctx->tmpBucket);
if (rv != APR_SUCCESS) {
return rv;
}
}
}
else {
ctx->broken = 1;
ap_lua_release_state(L, ctx->spec, r);
ap_remove_output_filter(f);
apr_brigade_cleanup(pbbIn);
apr_brigade_cleanup(ctx->tmpBucket);
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02663)
"lua: Error while executing filter: %s",
lua_tostring(L, -1));
return HTTP_INTERNAL_SERVER_ERROR;
}
}
/* If we've safely reached the end, do a final call to Lua to allow for any
finishing moves by the script, such as appending a tail. */
if (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(pbbIn))) {
apr_bucket *pbktEOS;
lua_pushnil(L);
lua_setglobal(L, "bucket");
if (lua_resume(L, 0) == LUA_YIELD) {
apr_bucket *pbktOut;
size_t olen;
const char* output = lua_tolstring(L, 1, &olen);
if (olen > 0) {
pbktOut = apr_bucket_heap_create(output, olen, NULL,
c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(ctx->tmpBucket, pbktOut);
}
}
pbktEOS = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(ctx->tmpBucket, pbktEOS);
ap_lua_release_state(L, ctx->spec, r);
rv = ap_pass_brigade(f->next, ctx->tmpBucket);
apr_brigade_cleanup(ctx->tmpBucket);
if (rv != APR_SUCCESS) {
return rv;
}
}
}
/* Clean up */
apr_brigade_cleanup(pbbIn);
return APR_SUCCESS;
}
static apr_status_t lua_input_filter_handle(ap_filter_t *f,
apr_bucket_brigade *pbbOut,
ap_input_mode_t eMode,
apr_read_type_e eBlock,
apr_off_t nBytes)
{
request_rec *r = f->r;
int rc, lastCall = 0;
lua_State *L;
lua_filter_ctx* ctx;
conn_rec *c = r->connection;
apr_status_t ret;
/* Set up the initial filter context and acquire the function.
* The corresponding Lua function should yield here.
*/
if (!f->ctx) {
rc = lua_setup_filter_ctx(f,r,&ctx);
f->ctx = ctx;
if (rc == APR_EGENERAL) {
ctx->broken = 1;
ap_remove_input_filter(f);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (rc == APR_ENOENT ) {
ap_remove_input_filter(f);
ctx->broken = 1;
}
if (rc == APR_SUCCESS) {
ctx->tmpBucket = apr_brigade_create(r->pool, c->bucket_alloc);
}
}
ctx = (lua_filter_ctx*) f->ctx;
L = ctx->L;
/* If the Lua script broke or denied serving the request, just pass the buckets through */
if (ctx->broken) {
return ap_get_brigade(f->next, pbbOut, eMode, eBlock, nBytes);
}
if (APR_BRIGADE_EMPTY(ctx->tmpBucket)) {
ret = ap_get_brigade(f->next, ctx->tmpBucket, eMode, eBlock, nBytes);
if (eMode == AP_MODE_EATCRLF || ret != APR_SUCCESS)
return ret;
}
/* While the Lua function is still yielding, pass buckets to the coroutine */
if (!ctx->broken) {
lastCall = 0;
while (!APR_BRIGADE_EMPTY(ctx->tmpBucket)) {
apr_bucket *pbktIn = APR_BRIGADE_FIRST(ctx->tmpBucket);
apr_bucket *pbktOut;
const char *data;
apr_size_t len;
if (APR_BUCKET_IS_EOS(pbktIn)) {
APR_BUCKET_REMOVE(pbktIn);
break;
}
/* read the bucket */
ret = apr_bucket_read(pbktIn, &data, &len, eBlock);
if (ret != APR_SUCCESS)
return ret;
/* Push the bucket onto the Lua stack as a global var */
lastCall++;
lua_pushlstring(L, data, len);
lua_setglobal(L, "bucket");
/* If Lua yielded, it means we have something to pass on */
if (lua_resume(L, 0) == LUA_YIELD) {
size_t olen;
const char* output = lua_tolstring(L, 1, &olen);
pbktOut = apr_bucket_heap_create(output, olen, 0, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(pbbOut, pbktOut);
apr_bucket_delete(pbktIn);
return APR_SUCCESS;
}
else {
ctx->broken = 1;
ap_lua_release_state(L, ctx->spec, r);
ap_remove_input_filter(f);
apr_bucket_delete(pbktIn);
return HTTP_INTERNAL_SERVER_ERROR;
}
}
/* If we've safely reached the end, do a final call to Lua to allow for any
finishing moves by the script, such as appending a tail. */
if (lastCall == 0) {
apr_bucket *pbktEOS = apr_bucket_eos_create(c->bucket_alloc);
lua_pushnil(L);
lua_setglobal(L, "bucket");
if (lua_resume(L, 0) == LUA_YIELD) {
apr_bucket *pbktOut;
size_t olen;
const char* output = lua_tolstring(L, 1, &olen);
pbktOut = apr_bucket_heap_create(output, olen, 0, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(pbbOut, pbktOut);
}
APR_BRIGADE_INSERT_TAIL(pbbOut,pbktEOS);
ap_lua_release_state(L, ctx->spec, r);
}
}
return APR_SUCCESS;
}
/* ---------------- Configury stuff --------------- */
/** harnesses for magic hooks **/
static int lua_request_rec_hook_harness(request_rec *r, const char *name, int apr_hook_when)
{
int rc;
apr_pool_t *pool;
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);
const char *key = apr_psprintf(r->pool, "%s_%d", name, apr_hook_when);
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, key,
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 = create_vm_spec(&pool, r, cfg, server_cfg,
hook_spec->file_name,
hook_spec->bytecode,
hook_spec->bytecode_len,
hook_spec->function_name,
"request hook");
L = ap_lua_get_lua_state(pool, spec, r);
if (!L) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(01477)
"lua: Failed to obtain lua interpreter for entry function '%s' in %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, APLOGNO(01478)
"lua: Unable to find entry function '%s' in %s (not a valid function)",
hook_spec->function_name,
hook_spec->file_name);
ap_lua_release_state(L, spec, r);
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);
ap_lua_release_state(L, spec, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
rc = DECLINED;
if (lua_isnumber(L, -1)) {
rc = lua_tointeger(L, -1);
ap_log_rerror(APLOG_MARK, APLOG_TRACE4, 0, r, "Lua hook %s:%s for phase %s returned %d",
hook_spec->file_name, hook_spec->function_name, name, rc);
}
else {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(03017)
"Lua hook %s:%s for phase %s did not return a numeric value",
hook_spec->file_name, hook_spec->function_name, name);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (rc != DECLINED) {
ap_lua_release_state(L, spec, r);
return rc;
}
ap_lua_release_state(L, spec, r);
}
}
return DECLINED;
}
/* Fix for making sure that LuaMapHandler works when FallbackResource is set */
static int lua_map_handler_fixups(request_rec *r)
{
/* If there is no handler set yet, this might be a LuaMapHandler request */
if (r->handler == NULL) {
int n = 0;
ap_regmatch_t match[10];
const ap_lua_dir_cfg *cfg = ap_get_module_config(r->per_dir_config,
&lua_module);
for (n = 0; n < cfg->mapped_handlers->nelts; n++) {
ap_lua_mapped_handler_spec *hook_spec =
((ap_lua_mapped_handler_spec **) cfg->mapped_handlers->elts)[n];
if (hook_spec == NULL) {
continue;
}
if (!ap_regexec(hook_spec->uri_pattern, r->uri, 10, match, 0)) {
r->handler = apr_pstrdup(r->pool, "lua-map-handler");
return OK;
}
}
}
return DECLINED;
}
static int lua_map_handler(request_rec *r)
{
int rc, n = 0;
apr_pool_t *pool;
lua_State *L;
const char *filename, *function_name;
const char *values[10];
ap_lua_vm_spec *spec;
ap_regmatch_t match[10];
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);
for (n = 0; n < cfg->mapped_handlers->nelts; n++) {
ap_lua_mapped_handler_spec *hook_spec =
((ap_lua_mapped_handler_spec **) cfg->mapped_handlers->elts)[n];
if (hook_spec == NULL) {
continue;
}
if (!ap_regexec(hook_spec->uri_pattern, r->uri, 10, match, 0)) {
int i;
for (i=0 ; i < 10; i++) {
if (match[i].rm_eo >= 0) {
values[i] = apr_pstrndup(r->pool, r->uri+match[i].rm_so, match[i].rm_eo - match[i].rm_so);
}
else values[i] = "";
}
filename = ap_lua_interpolate_string(r->pool, hook_spec->file_name, values);
function_name = ap_lua_interpolate_string(r->pool, hook_spec->function_name, values);
spec = create_vm_spec(&pool, r, cfg, server_cfg,
filename,
hook_spec->bytecode,
hook_spec->bytecode_len,
function_name,
"mapped handler");
L = ap_lua_get_lua_state(pool, spec, r);
if (!L) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(02330)
"lua: Failed to obtain Lua interpreter for entry function '%s' in %s",
function_name, filename);
ap_lua_release_state(L, spec, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (function_name != NULL) {
lua_getglobal(L, function_name);
if (!lua_isfunction(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(02331)
"lua: Unable to find entry function '%s' in %s (not a valid function)",
function_name,
filename);
ap_lua_release_state(L, spec, r);
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);
ap_lua_release_state(L, spec, r);
return HTTP_INTERNAL_SERVER_ERROR;
}
rc = DECLINED;
if (lua_isnumber(L, -1)) {
rc = lua_tointeger(L, -1);
}
else {
ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(02483)
"lua: Lua handler %s in %s did not return a value, assuming apache2.OK",
function_name,
filename);
rc = OK;
}
ap_lua_release_state(L, spec, r);
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 explanation -- 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;
int apr_hook_when;
} 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;
const char *key = apr_psprintf(cmd->pool, "%s_%d", baton->name, baton->apr_hook_when);
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, key,
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, key,
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 = NULL;
ap_lua_mapped_handler_spec *spec;
int when = APR_HOOK_MIDDLE;
const char *endp = ap_strrchr_c(line, '>');
if (endp == NULL) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive missing closing '>'", NULL);
}
line = apr_pstrndup(cmd->temp_pool, line, endp - line);
if (line[0]) {
const char *word;
word = ap_getword_conf(cmd->temp_pool, &line);
if (*word) {
function = apr_pstrdup(cmd->pool, word);
}
word = ap_getword_conf(cmd->temp_pool, &line);
if (*word) {
if (!strcasecmp("early", word)) {
when = AP_LUA_HOOK_FIRST;
}
else if (!strcasecmp("late", word)) {
when = AP_LUA_HOOK_LAST;
}
else {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> 2nd argument must be 'early' or 'late'", NULL);
}
}
}
spec = apr_pcalloc(cmd->pool, sizeof(ap_lua_mapped_handler_spec));
{
cr_ctx ctx;
lua_State *lvm;
char *tmp;
int rv;
ap_directive_t **current;
hack_section_baton *baton;
spec->file_name = apr_psprintf(cmd->pool, "%s:%u",
cmd->config_file->name,
cmd->config_file->line_number);
if (function) {
spec->function_name = (char *) function;
}
else {
function = NULL;
}
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_rawlen(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;
baton->apr_hook_when = when;
(*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,
int apr_hook_when)
{
ap_lua_mapped_handler_spec *spec;
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
const char *key = apr_psprintf(cmd->pool, "%s_%d", name, apr_hook_when);
apr_array_header_t *hook_specs = apr_hash_get(cfg->hooks, key,
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, key, 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;
*(ap_lua_mapped_handler_spec **) apr_array_push(hook_specs) = spec;
return NULL;
}
static const char *register_mapped_file_function_hook(const char *pattern,
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;
ap_regex_t *regex = apr_pcalloc(cmd->pool, sizeof(ap_regex_t));
if (ap_regcomp(regex, pattern,0)) {
return "Invalid regex pattern!";
}
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->uri_pattern = regex;
*(ap_lua_mapped_handler_spec **) apr_array_push(cfg->mapped_handlers) = spec;
return NULL;
}
static const char *register_filter_function_hook(const char *filter,
cmd_parms *cmd,
void *_cfg,
const char *file,
const char *function,
int direction)
{
ap_lua_filter_handler_spec *spec;
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
spec = apr_pcalloc(cmd->pool, sizeof(ap_lua_filter_handler_spec));
spec->file_name = apr_pstrdup(cmd->pool, file);
spec->function_name = apr_pstrdup(cmd->pool, function);
spec->filter_name = filter;
*(ap_lua_filter_handler_spec **) apr_array_push(cfg->mapped_filters) = spec;
/* TODO: Make it work on other types than just AP_FTYPE_RESOURCE? */
if (direction == AP_LUA_FILTER_OUTPUT) {
spec->direction = AP_LUA_FILTER_OUTPUT;
ap_register_output_filter_protocol(filter, lua_output_filter_handle, NULL, AP_FTYPE_RESOURCE,
AP_FILTER_PROTO_CHANGE|AP_FILTER_PROTO_CHANGE_LENGTH);
}
else {
spec->direction = AP_LUA_FILTER_INPUT;
ap_register_input_filter(filter, lua_input_filter_handle, NULL, AP_FTYPE_RESOURCE);
}
return NULL;
}
/* disabled (see reference below)
static int lua_check_user_id_harness_first(request_rec *r)
{
return lua_request_rec_hook_harness(r, "check_user_id", AP_LUA_HOOK_FIRST);
}
*/
static int lua_check_user_id_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "check_user_id", APR_HOOK_MIDDLE);
}
/* disabled (see reference below)
static int lua_check_user_id_harness_last(request_rec *r)
{
return lua_request_rec_hook_harness(r, "check_user_id", AP_LUA_HOOK_LAST);
}
*/
static int lua_translate_name_harness_first(request_rec *r)
{
return lua_request_rec_hook_harness(r, "translate_name", AP_LUA_HOOK_FIRST);
}
static int lua_translate_name_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "translate_name", APR_HOOK_MIDDLE);
}
static int lua_translate_name_harness_last(request_rec *r)
{
return lua_request_rec_hook_harness(r, "translate_name", AP_LUA_HOOK_LAST);
}
static int lua_fixup_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "fixups", APR_HOOK_MIDDLE);
}
static int lua_map_to_storage_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "map_to_storage", APR_HOOK_MIDDLE);
}
static int lua_type_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "type_checker", APR_HOOK_MIDDLE);
}
static int lua_access_checker_harness_first(request_rec *r)
{
return lua_request_rec_hook_harness(r, "access_checker", AP_LUA_HOOK_FIRST);
}
static int lua_access_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "access_checker", APR_HOOK_MIDDLE);
}
static int lua_access_checker_harness_last(request_rec *r)
{
return lua_request_rec_hook_harness(r, "access_checker", AP_LUA_HOOK_LAST);
}
static int lua_auth_checker_harness_first(request_rec *r)
{
return lua_request_rec_hook_harness(r, "auth_checker", AP_LUA_HOOK_FIRST);
}
static int lua_auth_checker_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "auth_checker", APR_HOOK_MIDDLE);
}
static int lua_auth_checker_harness_last(request_rec *r)
{
return lua_request_rec_hook_harness(r, "auth_checker", AP_LUA_HOOK_LAST);
}
static void lua_insert_filter_harness(request_rec *r)
{
/* ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(03223)
* "LuaHookInsertFilter not yet implemented"); */
}
static int lua_log_transaction_harness(request_rec *r)
{
return lua_request_rec_hook_harness(r, "log_transaction", APR_HOOK_FIRST);
}
static int lua_quick_harness(request_rec *r, int lookup)
{
if (lookup) {
return DECLINED;
}
return lua_request_rec_hook_harness(r, "quick", APR_HOOK_MIDDLE);
}
static const char *register_translate_name_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function,
const char *when)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES|
NOT_IN_HTACCESS);
int apr_hook_when = APR_HOOK_MIDDLE;
if (err) {
return err;
}
if (when) {
if (!strcasecmp(when, "early")) {
apr_hook_when = AP_LUA_HOOK_FIRST;
}
else if (!strcasecmp(when, "late")) {
apr_hook_when = AP_LUA_HOOK_LAST;
}
else {
return "Third argument must be 'early' or 'late'";
}
}
return register_named_file_function_hook("translate_name", cmd, _cfg,
file, function, apr_hook_when);
}
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, APR_HOOK_MIDDLE);
}
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, APR_HOOK_MIDDLE);
}
static const char *register_log_transaction_hook(cmd_parms *cmd, void *_cfg,
const char *file,
const char *function)
{
return register_named_file_function_hook("log_transaction", cmd, _cfg,
file, function, APR_HOOK_FIRST);
}
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,
const char *when)
{
int apr_hook_when = APR_HOOK_MIDDLE;
/* XXX: This does not currently work!!
if (when) {
if (!strcasecmp(when, "early")) {
apr_hook_when = AP_LUA_HOOK_FIRST;
}
else if (!strcasecmp(when, "late")) {
apr_hook_when = AP_LUA_HOOK_LAST;
}
else {
return "Third argument must be 'early' or 'late'";
}
}
*/
return register_named_file_function_hook("check_user_id", cmd, _cfg, file,
function, apr_hook_when);
}
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, APR_HOOK_MIDDLE);
}
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,
const char *when)
{
int apr_hook_when = APR_HOOK_MIDDLE;
if (when) {
if (!strcasecmp(when, "early")) {
apr_hook_when = AP_LUA_HOOK_FIRST;
}
else if (!strcasecmp(when, "late")) {
apr_hook_when = AP_LUA_HOOK_LAST;
}
else {
return "Third argument must be 'early' or 'late'";
}
}
return register_named_file_function_hook("access_checker", cmd, _cfg,
file, function, apr_hook_when);
}
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,
const char *when)
{
int apr_hook_when = APR_HOOK_MIDDLE;
if (when) {
if (!strcasecmp(when, "early")) {
apr_hook_when = AP_LUA_HOOK_FIRST;
}
else if (!strcasecmp(when, "late")) {
apr_hook_when = AP_LUA_HOOK_LAST;
}
else {
return "Third argument must be 'early' or 'late'";
}
}
return register_named_file_function_hook("auth_checker", cmd, _cfg, file,
function, apr_hook_when);
}
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)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES|
NOT_IN_HTACCESS);
if (err) {
return err;
}
return register_named_file_function_hook("quick", cmd, _cfg, file,
function, APR_HOOK_MIDDLE);
}
static const char *register_map_handler(cmd_parms *cmd, void *_cfg,
const char* match, const char *file, const char *function)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES|
NOT_IN_HTACCESS);
if (err) {
return err;
}
if (!function) function = "handle";
return register_mapped_file_function_hook(match, cmd, _cfg, file,
function);
}
static const char *register_output_filter(cmd_parms *cmd, void *_cfg,
const char* filter, const char *file, const char *function)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES|
NOT_IN_HTACCESS);
if (err) {
return err;
}
if (!function) function = "handle";
return register_filter_function_hook(filter, cmd, _cfg, file,
function, AP_LUA_FILTER_OUTPUT);
}
static const char *register_input_filter(cmd_parms *cmd, void *_cfg,
const char* filter, const char *file, const char *function)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES|
NOT_IN_HTACCESS);
if (err) {
return err;
}
if (!function) function = "handle";
return register_filter_function_hook(filter, cmd, _cfg, file,
function, AP_LUA_FILTER_INPUT);
}
static const char *register_quick_block(cmd_parms *cmd, void *_cfg,
const char *line)
{
return register_named_block_function_hook("quick", cmd, _cfg,
line);
}
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);
}
static const char *register_lua_inherit(cmd_parms *cmd,
void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
if (strcasecmp("none", arg) == 0) {
cfg->inherit = AP_LUA_INHERIT_NONE;
}
else if (strcasecmp("parent-first", arg) == 0) {
cfg->inherit = AP_LUA_INHERIT_PARENT_FIRST;
}
else if (strcasecmp("parent-last", arg) == 0) {
cfg->inherit = AP_LUA_INHERIT_PARENT_LAST;
}
else {
return apr_psprintf(cmd->pool,
"LuaInherit type of '%s' not recognized, valid "
"options are 'none', 'parent-first', and 'parent-last'",
arg);
}
return NULL;
}
static const char *register_lua_codecache(cmd_parms *cmd,
void *_cfg,
const char *arg)
{
ap_lua_dir_cfg *cfg = (ap_lua_dir_cfg *) _cfg;
if (strcasecmp("never", arg) == 0) {
cfg->codecache = AP_LUA_CACHE_NEVER;
}
else if (strcasecmp("stat", arg) == 0) {
cfg->codecache = AP_LUA_CACHE_STAT;
}
else if (strcasecmp("forever", arg) == 0) {
cfg->codecache = AP_LUA_CACHE_FOREVER;
}
else {
return apr_psprintf(cmd->pool,
"LuaCodeCache type of '%s' not recognized, valid "
"options are 'never', 'stat', and 'forever'",
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 = AP_LUA_SCOPE_ONCE;
}
else if (strcmp("request", scope) == 0) {
cfg->vm_scope = AP_LUA_SCOPE_REQUEST;
}
else if (strcmp("conn", scope) == 0) {
cfg->vm_scope = AP_LUA_SCOPE_CONN;
}
else if (strcmp("thread", scope) == 0) {
#if !APR_HAS_THREADS
return apr_psprintf(cmd->pool,
"Scope type of '%s' cannot be used because this "
"server does not have threading support "
"(APR_HAS_THREADS)"
scope);
#endif
cfg->vm_scope = AP_LUA_SCOPE_THREAD;
}
else if (strcmp("server", scope) == 0) {
unsigned int vmin, vmax;
#if !APR_HAS_THREADS
return apr_psprintf(cmd->pool,
"Scope type of '%s' cannot be used because this "
"server does not have threading support "
"(APR_HAS_THREADS)"
scope);
#endif
cfg->vm_scope = AP_LUA_SCOPE_SERVER;
vmin = min ? atoi(min) : 1;
vmax = max ? atoi(max) : 1;
if (vmin == 0) {
vmin = 1;
}
if (vmax < vmin) {
vmax = vmin;
}
cfg->vm_min = vmin;
cfg->vm_max = vmax;
}
else {
return apr_psprintf(cmd->pool,
"Invalid value for LuaScope, '%s', acceptable "
"values are: 'once', 'request', 'conn'"
#if APR_HAS_THREADS
", 'thread', 'server'"
#endif
,scope);
}
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;
}
const char *ap_lua_ssl_val(apr_pool_t *p, server_rec *s, conn_rec *c,
request_rec *r, const char *var)
{
if (lua_ssl_val) {
return (const char *)lua_ssl_val(p, s, c, r, (char *)var);
}
return NULL;
}
int ap_lua_ssl_is_https(conn_rec *c)
{
return lua_ssl_is_https ? lua_ssl_is_https(c) : 0;
}
/*******************************/
static const char *lua_authz_parse(cmd_parms *cmd, const char *require_line,
const void **parsed_require_line)
{
const char *provider_name;
lua_authz_provider_spec *spec;
lua_authz_provider_func *func = apr_pcalloc(cmd->pool, sizeof(lua_authz_provider_func));
apr_pool_userdata_get((void**)&provider_name, AUTHZ_PROVIDER_NAME_NOTE,
cmd->temp_pool);
ap_assert(provider_name != NULL);
spec = apr_hash_get(lua_authz_providers, provider_name, APR_HASH_KEY_STRING);
ap_assert(spec != NULL);
func->spec = spec;
if (require_line && *require_line) {
const char *arg;
func->args = apr_array_make(cmd->pool, 2, sizeof(const char *));
while ((arg = ap_getword_conf(cmd->pool, &require_line)) && *arg) {
APR_ARRAY_PUSH(func->args, const char *) = arg;
}
}
*parsed_require_line = func;
return NULL;
}
static authz_status lua_authz_check(request_rec *r, const char *require_line,
const void *parsed_require_line)
{
apr_pool_t *pool;
ap_lua_vm_spec *spec;
lua_State *L;
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);
const lua_authz_provider_func *prov_func = parsed_require_line;
const lua_authz_provider_spec *prov_spec = prov_func->spec;
int result;
int nargs = 0;
spec = create_vm_spec(&pool, r, cfg, server_cfg, prov_spec->file_name,
NULL, 0, prov_spec->function_name, "authz provider");
L = ap_lua_get_lua_state(pool, spec, r);
if (L == NULL) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02314)
"Unable to compile VM for authz provider %s", prov_spec->name);
return AUTHZ_GENERAL_ERROR;
}
lua_getglobal(L, prov_spec->function_name);
if (!lua_isfunction(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(02319)
"Unable to find entry function '%s' in %s (not a valid function)",
prov_spec->function_name, prov_spec->file_name);
ap_lua_release_state(L, spec, r);
return AUTHZ_GENERAL_ERROR;
}
ap_lua_run_lua_request(L, r);
if (prov_func->args) {
int i;
if (!lua_checkstack(L, prov_func->args->nelts)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02315)
"Error: authz provider %s: too many arguments", prov_spec->name);
ap_lua_release_state(L, spec, r);
return AUTHZ_GENERAL_ERROR;
}
for (i = 0; i < prov_func->args->nelts; i++) {
const char *arg = APR_ARRAY_IDX(prov_func->args, i, const char *);
lua_pushstring(L, arg);
}
nargs = prov_func->args->nelts;
}
if (lua_pcall(L, 1 + nargs, 1, 0)) {
const char *err = lua_tostring(L, -1);
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02316)
"Error executing authz provider %s: %s", prov_spec->name, err);
ap_lua_release_state(L, spec, r);
return AUTHZ_GENERAL_ERROR;
}
if (!lua_isnumber(L, -1)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02317)
"Error: authz provider %s did not return integer", prov_spec->name);
ap_lua_release_state(L, spec, r);
return AUTHZ_GENERAL_ERROR;
}
result = lua_tointeger(L, -1);
ap_lua_release_state(L, spec, r);
switch (result) {
case AUTHZ_DENIED:
case AUTHZ_GRANTED:
case AUTHZ_NEUTRAL:
case AUTHZ_GENERAL_ERROR:
case AUTHZ_DENIED_NO_USER:
return result;
default:
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02318)
"Error: authz provider %s: invalid return value %d",
prov_spec->name, result);
}
return AUTHZ_GENERAL_ERROR;
}
static const authz_provider lua_authz_provider =
{
&lua_authz_check,
&lua_authz_parse,
};
static const char *register_authz_provider(cmd_parms *cmd, void *_cfg,
const char *name, const char *file,
const char *function)
{
lua_authz_provider_spec *spec;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err)
return err;
spec = apr_pcalloc(cmd->pool, sizeof(*spec));
spec->name = name;
spec->file_name = file;
spec->function_name = function;
apr_hash_set(lua_authz_providers, name, APR_HASH_KEY_STRING, spec);
ap_register_auth_provider(cmd->pool, AUTHZ_PROVIDER_GROUP, name,
AUTHZ_PROVIDER_VERSION,
&lua_authz_provider,
AP_AUTH_INTERNAL_PER_CONF);
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_TAKE3("LuaAuthzProvider", register_authz_provider, NULL, RSRC_CONF|EXEC_ON_READ,
"Provide an authorization provider"),
AP_INIT_TAKE23("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_TAKE23("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_TAKE23("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_TAKE23("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_TAKE2("LuaHookLog", register_log_transaction_hook, NULL,
OR_ALL,
"Provide a hook for the logging phase of request processing"),
AP_INIT_TAKE123("LuaScope", register_lua_scope, NULL, OR_ALL,
"One of once, request, conn, server -- default is once"),
AP_INIT_TAKE1("LuaInherit", register_lua_inherit, NULL, OR_ALL,
"Controls how Lua scripts in parent contexts are merged with the current "
" context: none|parent-last|parent-first (default: parent-first) "),
AP_INIT_TAKE1("LuaCodeCache", register_lua_codecache, NULL, OR_ALL,
"Controls the behavior of the in-memory code cache "
" context: stat|forever|never (default: stat) "),
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"),
AP_INIT_TAKE23("LuaMapHandler", register_map_handler, NULL, OR_ALL,
"Maps a path to a lua handler"),
AP_INIT_TAKE3("LuaOutputFilter", register_output_filter, NULL, OR_ALL,
"Registers a Lua function as an output filter"),
AP_INIT_TAKE3("LuaInputFilter", register_input_filter, NULL, OR_ALL,
"Registers a Lua function as an input filter"),
{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->mapped_filters =
apr_array_make(p, 1, sizeof(ap_lua_filter_handler_spec *));
cfg->pool = p;
cfg->hooks = apr_hash_make(p);
cfg->dir = apr_pstrdup(p, dir);
cfg->vm_scope = AP_LUA_SCOPE_UNSET;
cfg->codecache = AP_LUA_CACHE_UNSET;
cfg->vm_min = 0;
cfg->vm_max = 0;
cfg->inherit = AP_LUA_INHERIT_UNSET;
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->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 int lua_pre_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp)
{
ap_mutex_register(pconf, "lua-ivm-shm", NULL, APR_LOCK_DEFAULT, 0);
return OK;
}
static int lua_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
apr_pool_t **pool;
apr_status_t rs;
lua_ssl_val = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
lua_ssl_is_https = APR_RETRIEVE_OPTIONAL_FN(ssl_is_https);
if (ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG)
return OK;
/* Create ivm mutex */
rs = ap_global_mutex_create(&lua_ivm_mutex, NULL, "lua-ivm-shm", NULL,
s, pconf, 0);
if (APR_SUCCESS != rs) {
return HTTP_INTERNAL_SERVER_ERROR;
}
/* Create shared memory space, anonymous first if possible. */
rs = apr_shm_create(&lua_ivm_shm, sizeof pool, NULL, pconf);
if (APR_STATUS_IS_ENOTIMPL(rs)) {
/* Fall back to filename-based; nuke any left-over first. */
lua_ivm_shmfile = ap_runtime_dir_relative(pconf, DEFAULT_LUA_SHMFILE);
apr_shm_remove(lua_ivm_shmfile, pconf);
rs = apr_shm_create(&lua_ivm_shm, sizeof pool, lua_ivm_shmfile, pconf);
}
if (rs != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_ERR, rs, s, APLOGNO(02665)
"mod_lua: Failed to create shared memory segment on file %s",
lua_ivm_shmfile ? lua_ivm_shmfile : "(anonymous)");
return HTTP_INTERNAL_SERVER_ERROR;
}
pool = (apr_pool_t **)apr_shm_baseaddr_get(lua_ivm_shm);
apr_pool_create(pool, pconf);
apr_pool_cleanup_register(pconf, NULL, shm_cleanup_wrapper,
apr_pool_cleanup_null);
return OK;
}
static void *overlay_hook_specs(apr_pool_t *p,
const void *key,
apr_ssize_t klen,
const void *overlay_val,
const void *base_val,
const void *data)
{
const apr_array_header_t *overlay_info = (const apr_array_header_t*)overlay_val;
const apr_array_header_t *base_info = (const apr_array_header_t*)base_val;
return apr_array_append(p, base_info, overlay_info);
}
static void *merge_dir_config(apr_pool_t *p, void *basev, void *overridesv)
{
ap_lua_dir_cfg *a, *base, *overrides;
a = (ap_lua_dir_cfg *)apr_pcalloc(p, sizeof(ap_lua_dir_cfg));
base = (ap_lua_dir_cfg*)basev;
overrides = (ap_lua_dir_cfg*)overridesv;
a->pool = overrides->pool;
a->dir = apr_pstrdup(p, overrides->dir);
a->vm_scope = (overrides->vm_scope == AP_LUA_SCOPE_UNSET) ? base->vm_scope: overrides->vm_scope;
a->inherit = (overrides->inherit == AP_LUA_INHERIT_UNSET) ? base->inherit : overrides->inherit;
a->codecache = (overrides->codecache == AP_LUA_CACHE_UNSET) ? base->codecache : overrides->codecache;
a->vm_min = (overrides->vm_min == 0) ? base->vm_min : overrides->vm_min;
a->vm_max = (overrides->vm_max == 0) ? base->vm_max : overrides->vm_max;
if (a->inherit == AP_LUA_INHERIT_UNSET || a->inherit == AP_LUA_INHERIT_PARENT_FIRST) {
a->package_paths = apr_array_append(p, base->package_paths, overrides->package_paths);
a->package_cpaths = apr_array_append(p, base->package_cpaths, overrides->package_cpaths);
a->mapped_handlers = apr_array_append(p, base->mapped_handlers, overrides->mapped_handlers);
a->mapped_filters = apr_array_append(p, base->mapped_filters, overrides->mapped_filters);
a->hooks = apr_hash_merge(p, overrides->hooks, base->hooks, overlay_hook_specs, NULL);
}
else if (a->inherit == AP_LUA_INHERIT_PARENT_LAST) {
a->package_paths = apr_array_append(p, overrides->package_paths, base->package_paths);
a->package_cpaths = apr_array_append(p, overrides->package_cpaths, base->package_cpaths);
a->mapped_handlers = apr_array_append(p, overrides->mapped_handlers, base->mapped_handlers);
a->mapped_filters = apr_array_append(p, overrides->mapped_filters, base->mapped_filters);
a->hooks = apr_hash_merge(p, base->hooks, overrides->hooks, overlay_hook_specs, NULL);
}
else {
a->package_paths = overrides->package_paths;
a->package_cpaths = overrides->package_cpaths;
a->mapped_handlers= overrides->mapped_handlers;
a->mapped_filters= overrides->mapped_filters;
a->hooks= overrides->hooks;
}
return a;
}
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_first, NULL, NULL,
AP_LUA_HOOK_FIRST);
ap_hook_translate_name(lua_translate_name_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_translate_name(lua_translate_name_harness_last, NULL, NULL,
AP_LUA_HOOK_LAST);
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);
/* XXX: Does not work :(
* ap_hook_check_user_id(lua_check_user_id_harness_first, NULL, NULL,
AP_LUA_HOOK_FIRST);
*/
ap_hook_check_user_id(lua_check_user_id_harness, NULL, NULL,
APR_HOOK_MIDDLE);
/* XXX: Does not work :(
* ap_hook_check_user_id(lua_check_user_id_harness_last, NULL, NULL,
AP_LUA_HOOK_LAST);
*/
ap_hook_type_checker(lua_type_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_access_checker(lua_access_checker_harness_first, NULL, NULL,
AP_LUA_HOOK_FIRST);
ap_hook_access_checker(lua_access_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_access_checker(lua_access_checker_harness_last, NULL, NULL,
AP_LUA_HOOK_LAST);
ap_hook_auth_checker(lua_auth_checker_harness_first, NULL, NULL,
AP_LUA_HOOK_FIRST);
ap_hook_auth_checker(lua_auth_checker_harness, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_auth_checker(lua_auth_checker_harness_last, NULL, NULL,
AP_LUA_HOOK_LAST);
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_post_config(lua_post_config, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_pre_config(lua_pre_config, 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_hook_handler(lua_map_handler, NULL, NULL, AP_LUA_HOOK_FIRST);
/* Hook this right before FallbackResource kicks in */
ap_hook_fixups(lua_map_handler_fixups, NULL, NULL, AP_LUA_HOOK_LAST-2);
#if APR_HAS_THREADS
ap_hook_child_init(ap_lua_init_mutex, NULL, NULL, APR_HOOK_MIDDLE);
#endif
/* providers */
lua_authz_providers = apr_hash_make(p);
/* Logging catcher */
ap_hook_log_transaction(lua_log_transaction_harness,NULL,NULL,
APR_HOOK_FIRST);
}
AP_DECLARE_MODULE(lua) = {
STANDARD20_MODULE_STUFF,
create_dir_config, /* create per-dir config structures */
merge_dir_config, /* 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 */
};