diff options
Diffstat (limited to '')
| -rw-r--r-- | modules/lua/mod_lua.c | 2197 |
1 files changed, 2197 insertions, 0 deletions
diff --git a/modules/lua/mod_lua.c b/modules/lua/mod_lua.c new file mode 100644 index 0000000..303890e --- /dev/null +++ b/modules/lua/mod_lua.c @@ -0,0 +1,2197 @@ +/** + * 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_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) + +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); + apr_pool_tag(pool, "mod_lua-vm"); + 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, nres; + 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, &nres); + 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, nres; + 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, &nres) == LUA_YIELD && nres == 1) { + 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, &nres) == LUA_YIELD && nres == 1) { + 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, nres; + 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, &nres) == LUA_YIELD && nres == 1) { + 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, &nres) == LUA_YIELD && nres == 1) { + 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_pre_trans_name_harness(request_rec *r) +{ + return lua_request_rec_hook_harness(r, "pre_translate_name", APR_HOOK_MIDDLE); +} + +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_pre_trans_name_hook(cmd_parms *cmd, void *_cfg, + const char *file, + const char *function) +{ + return register_named_file_function_hook("pre_translate_name", cmd, _cfg, file, + function, APR_HOOK_MIDDLE); +} + +static const char *register_pre_trans_name_block(cmd_parms *cmd, void *_cfg, + const char *line) +{ + return register_named_block_function_hook("pre_translate_name", cmd, _cfg, + line); +} + +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) +{ + return ap_ssl_var_lookup(p, s, c, r, var); +} + +int ap_lua_ssl_is_https(conn_rec *c) +{ + return ap_ssl_conn_is_ssl(c); +} + +/*******************************/ + +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; +} + + +static const 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_TAKE2("LuaHookPreTranslateName", register_pre_trans_name_hook, NULL, + OR_ALL, + "Provide a hook for the pre_translate name phase of request processing"), + + AP_INIT_RAW_ARGS("<LuaHookPreTranslateName", register_pre_trans_name_block, NULL, + EXEC_ON_READ | OR_ALL, + "Provide a hook for the pre_translate name phase of request processing"), + + 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; + + 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_tag(*pool, "mod_lua-shared"); + 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_pre_translate_name(lua_pre_trans_name_harness, NULL, NULL, + APR_HOOK_MIDDLE); + + 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); + ap_hook_child_init(ap_lua_init_mutex, NULL, NULL, APR_HOOK_MIDDLE); + + /* 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 */ +}; |