/** * 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 "lua_apr.h" #include "lua_dbd.h" #include "lua_passwd.h" #include "scoreboard.h" #include "util_md5.h" #include "util_script.h" #include "util_varbuf.h" #include "apr_date.h" #include "apr_pools.h" #include "apr_thread_mutex.h" #include "apr_tables.h" #include "util_cookies.h" #define APR_WANT_BYTEFUNC #include "apr_want.h" extern apr_global_mutex_t* lua_ivm_mutex; extern apr_shm_t *lua_ivm_shm; APLOG_USE_MODULE(lua); #define POST_MAX_VARS 500 #ifndef MODLUA_MAX_REG_MATCH #define MODLUA_MAX_REG_MATCH 25 #endif typedef char *(*req_field_string_f) (request_rec * r); typedef int (*req_field_int_f) (request_rec * r); typedef req_table_t *(*req_field_apr_table_f) (request_rec * r); void ap_lua_rstack_dump(lua_State *L, request_rec *r, const char *msg) { int i; int top = lua_gettop(L); ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01484) "Lua Stack Dump: [%s]", msg); for (i = 1; i <= top; i++) { int t = lua_type(L, i); switch (t) { case LUA_TSTRING:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03001) "%d: '%s'", i, lua_tostring(L, i)); break; } case LUA_TUSERDATA:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03002) "%d: userdata", i); break; } case LUA_TLIGHTUSERDATA:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03003) "%d: lightuserdata", i); break; } case LUA_TNIL:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03004) "%d: NIL", i); break; } case LUA_TNONE:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03005) "%d: None", i); break; } case LUA_TBOOLEAN:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03006) "%d: %s", i, lua_toboolean(L, i) ? "true" : "false"); break; } case LUA_TNUMBER:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03007) "%d: %g", i, lua_tonumber(L, i)); break; } case LUA_TTABLE:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03008) "%d: ", i); break; } case LUA_TFUNCTION:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03009) "%d: ", i); break; } default:{ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(03010) "%d: unknown: -[%s]-", i, lua_typename(L, i)); break; } } } } /** * Verify that the thing at index is a request_rec wrapping * userdata thingamajig and return it if it is. if it is not * lua will enter its error handling routine. */ static request_rec *ap_lua_check_request_rec(lua_State *L, int index) { request_rec *r; luaL_checkudata(L, index, "Apache2.Request"); r = (request_rec *) lua_unboxpointer(L, index); return r; } /* ------------------ request methods -------------------- */ /* helper callback for req_parseargs */ static int req_aprtable2luatable_cb(void *l, const char *key, const char *value) { int t; lua_State *L = (lua_State *) l; /* [table, table] */ /* rstack_dump(L, RRR, "start of cb"); */ /* L is [table, table] */ /* build complex */ lua_getfield(L, -1, key); /* [VALUE, table, table] */ /* rstack_dump(L, RRR, "after getfield"); */ t = lua_type(L, -1); switch (t) { case LUA_TNIL: case LUA_TNONE:{ lua_pop(L, 1); /* [table, table] */ lua_newtable(L); /* [array, table, table] */ lua_pushnumber(L, 1); /* [1, array, table, table] */ lua_pushstring(L, value); /* [string, 1, array, table, table] */ lua_settable(L, -3); /* [array, table, table] */ lua_setfield(L, -2, key); /* [table, table] */ break; } case LUA_TTABLE:{ /* [array, table, table] */ int size = lua_rawlen(L, -1); lua_pushnumber(L, size + 1); /* [#, array, table, table] */ lua_pushstring(L, value); /* [string, #, array, table, table] */ lua_settable(L, -3); /* [array, table, table] */ lua_setfield(L, -2, key); /* [table, table] */ break; } } /* L is [table, table] */ /* build simple */ lua_getfield(L, -2, key); /* [VALUE, table, table] */ if (lua_isnoneornil(L, -1)) { /* only set if not already set */ lua_pop(L, 1); /* [table, table]] */ lua_pushstring(L, value); /* [string, table, table] */ lua_setfield(L, -3, key); /* [table, table] */ } else { lua_pop(L, 1); } return 1; } /* helper callback for req_parseargs */ static int req_aprtable2luatable_cb_len(void *l, const char *key, const char *value, size_t len) { int t; lua_State *L = (lua_State *) l; /* [table, table] */ /* rstack_dump(L, RRR, "start of cb"); */ /* L is [table, table] */ /* build complex */ lua_getfield(L, -1, key); /* [VALUE, table, table] */ /* rstack_dump(L, RRR, "after getfield"); */ t = lua_type(L, -1); switch (t) { case LUA_TNIL: case LUA_TNONE:{ lua_pop(L, 1); /* [table, table] */ lua_newtable(L); /* [array, table, table] */ lua_pushnumber(L, 1); /* [1, array, table, table] */ lua_pushlstring(L, value, len); /* [string, 1, array, table, table] */ lua_settable(L, -3); /* [array, table, table] */ lua_setfield(L, -2, key); /* [table, table] */ break; } case LUA_TTABLE:{ /* [array, table, table] */ int size = lua_rawlen(L, -1); lua_pushnumber(L, size + 1); /* [#, array, table, table] */ lua_pushlstring(L, value, len); /* [string, #, array, table, table] */ lua_settable(L, -3); /* [array, table, table] */ lua_setfield(L, -2, key); /* [table, table] */ break; } } /* L is [table, table] */ /* build simple */ lua_getfield(L, -2, key); /* [VALUE, table, table] */ if (lua_isnoneornil(L, -1)) { /* only set if not already set */ lua_pop(L, 1); /* [table, table]] */ lua_pushlstring(L, value, len); /* [string, table, table] */ lua_setfield(L, -3, key); /* [table, table] */ } else { lua_pop(L, 1); } return 1; } /* ======================================================================================================================= lua_read_body(request_rec *r, const char **rbuf, apr_off_t *size): Reads any additional form data sent in POST/PUT requests. Used for multipart POST data. ======================================================================================================================= */ static int lua_read_body(request_rec *r, const char **rbuf, apr_off_t *size, apr_off_t maxsize) { int rc = OK; *rbuf = NULL; *size = 0; if ((rc = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))) { return (rc); } if (ap_should_client_block(r)) { /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ apr_off_t len_read = -1; apr_off_t rpos = 0; apr_off_t length = r->remaining; /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ if (maxsize != 0 && length > maxsize) { return APR_EINCOMPLETE; /* Only room for incomplete data chunk :( */ } *rbuf = (const char *) apr_pcalloc(r->pool, (apr_size_t) (length) + 1); while ((rpos < length) && (len_read = ap_get_client_block(r, (char *) *rbuf + rpos, length - rpos)) > 0) { rpos += len_read; } if (len_read < 0) { return APR_EINCOMPLETE; } *size = rpos; } else { rc = DONE; } return (rc); } /* * ======================================================================================================================= * lua_write_body: Reads any additional form data sent in POST/PUT requests * and writes to a file. * ======================================================================================================================= */ static apr_status_t lua_write_body(request_rec *r, apr_file_t *file, apr_off_t *size) { apr_status_t rc = OK; *size = 0; if ((rc = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))) return rc; if (ap_should_client_block(r)) { char argsbuffer[HUGE_STRING_LEN]; apr_off_t rsize, len_read, rpos = 0; apr_off_t length = r->remaining; *size = length; while ((len_read = ap_get_client_block(r, argsbuffer, sizeof(argsbuffer))) > 0) { if ((rpos + len_read) > length) rsize = (apr_size_t) length - rpos; else rsize = len_read; rc = apr_file_write_full(file, argsbuffer, (apr_size_t) rsize, NULL); if (rc != APR_SUCCESS) return rc; rpos += rsize; } } else { rc = DONE; } return rc; } /* expose apr_table as (r/o) lua table */ static int req_aprtable2luatable(lua_State *L, apr_table_t *t) { lua_newtable(L); lua_newtable(L); /* [table, table] */ apr_table_do(req_aprtable2luatable_cb, L, t, NULL); return 2; /* [table, table>] */ } static int req_headers_in_table(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); return req_aprtable2luatable(L, r->headers_in); } static int req_headers_out_table(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); return req_aprtable2luatable(L, r->headers_out); } static int req_err_headers_out_table(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); return req_aprtable2luatable(L, r->err_headers_out); } static int req_notes_table(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); return req_aprtable2luatable(L, r->notes); } static int req_subprocess_env_table(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); return req_aprtable2luatable(L, r->subprocess_env); } /* r:parseargs() returning a lua table */ static int req_parseargs(lua_State *L) { apr_table_t *form_table; request_rec *r = ap_lua_check_request_rec(L, 1); lua_newtable(L); lua_newtable(L); /* [table, table] */ ap_args_to_table(r, &form_table); apr_table_do(req_aprtable2luatable_cb, L, form_table, NULL); return 2; /* [table, table>] */ } /* ap_lua_binstrstr: Binary strstr function for uploaded data with NULL bytes */ static char* ap_lua_binstrstr (const char * haystack, size_t hsize, const char* needle, size_t nsize) { size_t p; if (haystack == NULL) return NULL; if (needle == NULL) return NULL; if (hsize < nsize) return NULL; for (p = 0; p <= (hsize - nsize); ++p) { if (memcmp(haystack + p, needle, nsize) == 0) { return (char*) (haystack + p); } } return NULL; } /* r:parsebody(): Parses regular (url-enocded) or multipart POST data and returns two tables*/ static int req_parsebody(lua_State *L) { apr_array_header_t *pairs; apr_off_t len; int res; apr_size_t size; apr_size_t max_post_size; char *multipart; const char *contentType; request_rec *r = ap_lua_check_request_rec(L, 1); max_post_size = (apr_size_t) luaL_optinteger(L, 2, MAX_STRING_LEN); multipart = apr_pcalloc(r->pool, 256); contentType = apr_table_get(r->headers_in, "Content-Type"); lua_newtable(L); lua_newtable(L); /* [table, table] */ if (contentType != NULL && (sscanf(contentType, "multipart/form-data; boundary=%250c", multipart) == 1)) { char *buffer, *key, *filename; char *start = 0, *end = 0, *crlf = 0; const char *data; int i; size_t vlen = 0; size_t len = 0; if (lua_read_body(r, &data, (apr_off_t*) &size, max_post_size) != OK) { return 2; } len = strlen(multipart); i = 0; for ( start = strstr((char *) data, multipart); start != NULL; start = end ) { i++; if (i == POST_MAX_VARS) break; crlf = strstr((char *) start, "\r\n\r\n"); if (!crlf) break; end = ap_lua_binstrstr(crlf, (size - (crlf - data)), multipart, len); if (end == NULL) break; key = (char *) apr_pcalloc(r->pool, 256); filename = (char *) apr_pcalloc(r->pool, 256); if (end - crlf <= 8) break; vlen = end - crlf - 8; buffer = (char *) apr_pcalloc(r->pool, vlen+1); memcpy(buffer, crlf + 4, vlen); sscanf(start + len + 2, "Content-Disposition: form-data; name=\"%255[^\"]\"; filename=\"%255[^\"]\"", key, filename); if (*key) { req_aprtable2luatable_cb_len(L, key, buffer, vlen); } } } else { char *buffer; res = ap_parse_form_data(r, NULL, &pairs, -1, max_post_size); if (res == OK) { while(pairs && !apr_is_empty_array(pairs)) { ap_form_pair_t *pair = (ap_form_pair_t *) apr_array_pop(pairs); apr_brigade_length(pair->value, 1, &len); size = (apr_size_t) len; buffer = apr_palloc(r->pool, size + 1); apr_brigade_flatten(pair->value, buffer, &size); buffer[len] = 0; req_aprtable2luatable_cb(L, pair->name, buffer); } } } return 2; /* [table, table>] */ } /* * lua_ap_requestbody; r:requestbody([filename]) - Reads or stores the request * body */ static int lua_ap_requestbody(lua_State *L) { const char *filename; request_rec *r; apr_off_t maxSize; r = ap_lua_check_request_rec(L, 1); filename = luaL_optstring(L, 2, 0); maxSize = (apr_off_t)luaL_optinteger(L, 3, 0); if (r) { apr_off_t size; if (maxSize > 0 && r->remaining > maxSize) { lua_pushnil(L); lua_pushliteral(L, "Request body was larger than the permitted size."); return 2; } if (r->method_number != M_POST && r->method_number != M_PUT) return (0); if (!filename) { const char *data; if (lua_read_body(r, &data, &size, maxSize) != OK) return (0); lua_pushlstring(L, data, (size_t) size); lua_pushinteger(L, (lua_Integer) size); return (2); } else { apr_status_t rc; apr_file_t *file; rc = apr_file_open(&file, filename, APR_CREATE | APR_FOPEN_WRITE, APR_FPROT_OS_DEFAULT, r->pool); lua_settop(L, 0); if (rc == APR_SUCCESS) { rc = lua_write_body(r, file, &size); apr_file_close(file); if (rc != OK) { lua_pushboolean(L, 0); return 1; } lua_pushinteger(L, (lua_Integer) size); return (1); } else lua_pushboolean(L, 0); return (1); } } return (0); } /* wrap ap_rputs as r:puts(String) */ static int req_puts(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); int argc = lua_gettop(L); int i; for (i = 2; i <= argc; i++) { ap_rputs(luaL_checkstring(L, i), r); } return 0; } /* wrap ap_rwrite as r:write(String) */ static int req_write(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); size_t n; int rv; const char *buf = luaL_checklstring(L, 2, &n); rv = ap_rwrite((void *) buf, n, r); lua_pushinteger(L, rv); return 1; } /* r:add_output_filter(name) */ static int req_add_output_filter(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); const char *name = luaL_checkstring(L, 2); ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01485) "adding output filter %s", name); ap_add_output_filter(name, L, r, r->connection); return 0; } /* wrap ap_construct_url as r:construct_url(String) */ static int req_construct_url(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); const char *name = luaL_checkstring(L, 2); lua_pushstring(L, ap_construct_url(r->pool, name, r)); return 1; } /* wrap ap_escape_html r:escape_html(String) */ static int req_escape_html(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); const char *s = luaL_checkstring(L, 2); lua_pushstring(L, ap_escape_html(r->pool, s)); return 1; } /* wrap optional ssl_var_lookup as r:ssl_var_lookup(String) */ static int req_ssl_var_lookup(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); const char *s = luaL_checkstring(L, 2); const char *res = ap_lua_ssl_val(r->pool, r->server, r->connection, r, (char *)s); lua_pushstring(L, res); return 1; } /* BEGIN dispatch mathods for request_rec fields */ /* not really a field, but we treat it like one */ static const char *req_document_root(request_rec *r) { return ap_document_root(r); } static const char *req_context_prefix(request_rec *r) { return ap_context_prefix(r); } static const char *req_context_document_root(request_rec *r) { return ap_context_document_root(r); } static char *req_uri_field(request_rec *r) { return r->uri; } static const char *req_method_field(request_rec *r) { return r->method; } static const char *req_handler_field(request_rec *r) { return r->handler; } static const char *req_proxyreq_field(request_rec *r) { switch (r->proxyreq) { case PROXYREQ_NONE: return "PROXYREQ_NONE"; case PROXYREQ_PROXY: return "PROXYREQ_PROXY"; case PROXYREQ_REVERSE: return "PROXYREQ_REVERSE"; case PROXYREQ_RESPONSE: return "PROXYREQ_RESPONSE"; default: return NULL; } } static const char *req_hostname_field(request_rec *r) { return r->hostname; } static const char *req_args_field(request_rec *r) { return r->args; } static const char *req_path_info_field(request_rec *r) { return r->path_info; } static const char *req_canonical_filename_field(request_rec *r) { return r->canonical_filename; } static const char *req_filename_field(request_rec *r) { return r->filename; } static const char *req_user_field(request_rec *r) { return r->user; } static const char *req_unparsed_uri_field(request_rec *r) { return r->unparsed_uri; } static const char *req_ap_auth_type_field(request_rec *r) { return r->ap_auth_type; } static const char *req_content_encoding_field(request_rec *r) { return r->content_encoding; } static const char *req_content_type_field(request_rec *r) { return r->content_type; } static const char *req_range_field(request_rec *r) { return r->range; } static const char *req_protocol_field(request_rec *r) { return r->protocol; } static const char *req_the_request_field(request_rec *r) { return r->the_request; } static const char *req_log_id_field(request_rec *r) { return r->log_id; } static const char *req_useragent_ip_field(request_rec *r) { return r->useragent_ip; } static int req_remaining_field(request_rec *r) { return r->remaining; } static int req_status_field(request_rec *r) { return r->status; } static int req_assbackwards_field(request_rec *r) { return r->assbackwards; } static req_table_t* req_headers_in(request_rec *r) { req_table_t* t = apr_palloc(r->pool, sizeof(req_table_t)); t->r = r; t->t = r->headers_in; t->n = "headers_in"; return t; } static req_table_t* req_headers_out(request_rec *r) { req_table_t* t = apr_palloc(r->pool, sizeof(req_table_t)); t->r = r; t->t = r->headers_out; t->n = "headers_out"; return t; } static req_table_t* req_err_headers_out(request_rec *r) { req_table_t* t = apr_palloc(r->pool, sizeof(req_table_t)); t->r = r; t->t = r->err_headers_out; t->n = "err_headers_out"; return t; } static req_table_t* req_subprocess_env(request_rec *r) { req_table_t* t = apr_palloc(r->pool, sizeof(req_table_t)); t->r = r; t->t = r->subprocess_env; t->n = "subprocess_env"; return t; } static req_table_t* req_notes(request_rec *r) { req_table_t* t = apr_palloc(r->pool, sizeof(req_table_t)); t->r = r; t->t = r->notes; t->n = "notes"; return t; } static int req_ssl_is_https_field(request_rec *r) { return ap_lua_ssl_is_https(r->connection); } static int req_ap_get_server_port(request_rec *r) { return (int) ap_get_server_port(r); } static int lua_ap_rflush (lua_State *L) { int returnValue; request_rec *r; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); returnValue = ap_rflush(r); lua_pushboolean(L, (returnValue == 0)); return 1; } static const char* lua_ap_options(request_rec* r) { int opts; opts = ap_allow_options(r); return apr_psprintf(r->pool, "%s %s %s %s %s %s", (opts&OPT_INDEXES) ? "Indexes" : "", (opts&OPT_INCLUDES) ? "Includes" : "", (opts&OPT_SYM_LINKS) ? "FollowSymLinks" : "", (opts&OPT_EXECCGI) ? "ExecCGI" : "", (opts&OPT_MULTI) ? "MultiViews" : "", (opts&OPT_ALL) == OPT_ALL ? "All" : "" ); } static const char* lua_ap_allowoverrides(request_rec* r) { int opts; opts = ap_allow_overrides(r); if ( (opts & OR_ALL) == OR_ALL) { return "All"; } else if (opts == OR_NONE) { return "None"; } return apr_psprintf(r->pool, "%s %s %s %s %s", (opts & OR_LIMIT) ? "Limit" : "", (opts & OR_OPTIONS) ? "Options" : "", (opts & OR_FILEINFO) ? "FileInfo" : "", (opts & OR_AUTHCFG) ? "AuthCfg" : "", (opts & OR_INDEXES) ? "Indexes" : "" ); } static int lua_ap_started(request_rec* r) { return (int)(ap_scoreboard_image->global->restart_time / 1000000); } static const char* lua_ap_basic_auth_pw(request_rec* r) { const char* pw = NULL; ap_get_basic_auth_pw(r, &pw); return pw ? pw : ""; } static int lua_ap_limit_req_body(request_rec* r) { return (int) ap_get_limit_req_body(r); } static int lua_ap_is_initial_req(request_rec *r) { return ap_is_initial_req(r); } static int lua_ap_some_auth_required(request_rec *r) { return ap_some_auth_required(r); } static int lua_ap_sendfile(lua_State *L) { apr_finfo_t file_info; const char *filename; request_rec *r; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); filename = lua_tostring(L, 2); apr_stat(&file_info, filename, APR_FINFO_MIN, r->pool); if (file_info.filetype == APR_NOFILE || file_info.filetype == APR_DIR) { lua_pushboolean(L, 0); } else { apr_size_t sent; apr_status_t rc; apr_file_t *file; rc = apr_file_open(&file, filename, APR_READ, APR_OS_DEFAULT, r->pool); if (rc == APR_SUCCESS) { ap_send_fd(file, r, 0, (apr_size_t)file_info.size, &sent); apr_file_close(file); lua_pushinteger(L, sent); } else { lua_pushboolean(L, 0); } } return (1); } /* * lua_apr_b64encode; r:encode_base64(string) - encodes a string to Base64 * format */ static int lua_apr_b64encode(lua_State *L) { const char *plain; char *encoded; size_t plain_len, encoded_len; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); plain = lua_tolstring(L, 2, &plain_len); encoded_len = apr_base64_encode_len(plain_len); if (encoded_len) { encoded = apr_palloc(r->pool, encoded_len); encoded_len = apr_base64_encode(encoded, plain, plain_len); if (encoded_len > 0 && encoded[encoded_len - 1] == '\0') encoded_len--; lua_pushlstring(L, encoded, encoded_len); return 1; } return 0; } /* * lua_apr_b64decode; r:decode_base64(string) - decodes a Base64 string */ static int lua_apr_b64decode(lua_State *L) { const char *encoded; char *plain; size_t encoded_len, decoded_len; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); encoded = lua_tolstring(L, 2, &encoded_len); decoded_len = apr_base64_decode_len(encoded); if (decoded_len) { plain = apr_palloc(r->pool, decoded_len); decoded_len = apr_base64_decode(plain, encoded); if (decoded_len > 0 && plain[decoded_len - 1] == '\0') decoded_len--; lua_pushlstring(L, plain, decoded_len); return 1; } return 0; } /* * lua_ap_unescape; r:unescape(string) - Unescapes an URL-encoded string */ static int lua_ap_unescape(lua_State *L) { const char *escaped; char *plain; size_t x, y; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); escaped = lua_tolstring(L, 2, &x); plain = apr_pstrdup(r->pool, escaped); y = ap_unescape_urlencoded(plain); if (!y) { lua_pushstring(L, plain); return 1; } return 0; } /* * lua_ap_escape; r:escape(string) - URL-escapes a string */ static int lua_ap_escape(lua_State *L) { const char *plain; char *escaped; size_t x; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); plain = lua_tolstring(L, 2, &x); escaped = ap_escape_urlencoded(r->pool, plain); lua_pushstring(L, escaped); return 1; } /* * lua_apr_md5; r:md5(string) - Calculates an MD5 digest of a string */ static int lua_apr_md5(lua_State *L) { const char *buffer; char *result; size_t len; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); buffer = lua_tolstring(L, 2, &len); result = ap_md5_binary(r->pool, (const unsigned char *)buffer, len); lua_pushstring(L, result); return 1; } /* * lua_apr_sha1; r:sha1(string) - Calculates the SHA1 digest of a string */ static int lua_apr_sha1(lua_State *L) { unsigned char digest[APR_SHA1_DIGESTSIZE]; apr_sha1_ctx_t sha1; const char *buffer; char *result; size_t len; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); result = apr_pcalloc(r->pool, sizeof(digest) * 2 + 1); buffer = lua_tolstring(L, 2, &len); apr_sha1_init(&sha1); apr_sha1_update(&sha1, buffer, len); apr_sha1_final(digest, &sha1); ap_bin2hex(digest, sizeof(digest), result); lua_pushstring(L, result); return 1; } /* * lua_apr_htpassword; r:htpassword(string [, algorithm [, cost]]) - Creates * a htpassword hash from a string */ static int lua_apr_htpassword(lua_State *L) { passwd_ctx ctx = { 0 }; request_rec *r; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); ctx.passwd = apr_pstrdup(r->pool, lua_tostring(L, 2)); ctx.alg = luaL_optinteger(L, 3, ALG_APMD5); ctx.cost = luaL_optinteger(L, 4, 0); ctx.pool = r->pool; ctx.out = apr_pcalloc(r->pool, MAX_PASSWD_LEN); ctx.out_len = MAX_PASSWD_LEN; if (mk_password_hash(&ctx)) { lua_pushboolean(L, 0); lua_pushstring(L, ctx.errstr); return 2; } else { lua_pushstring(L, ctx.out); } return 1; } /* * lua_apr_touch; r:touch(string [, time]) - Sets mtime of a file */ static int lua_apr_touch(lua_State *L) { request_rec *r; const char *path; apr_status_t status; apr_time_t mtime; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); path = lua_tostring(L, 2); mtime = (apr_time_t)luaL_optnumber(L, 3, (lua_Number)apr_time_now()); status = apr_file_mtime_set(path, mtime, r->pool); lua_pushboolean(L, (status == 0)); return 1; } /* * lua_apr_mkdir; r:mkdir(string [, permissions]) - Creates a directory */ static int lua_apr_mkdir(lua_State *L) { request_rec *r; const char *path; apr_status_t status; apr_fileperms_t perms; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); path = lua_tostring(L, 2); perms = luaL_optinteger(L, 3, APR_OS_DEFAULT); status = apr_dir_make(path, perms, r->pool); lua_pushboolean(L, (status == 0)); return 1; } /* * lua_apr_mkrdir; r:mkrdir(string [, permissions]) - Creates directories * recursive */ static int lua_apr_mkrdir(lua_State *L) { request_rec *r; const char *path; apr_status_t status; apr_fileperms_t perms; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); path = lua_tostring(L, 2); perms = luaL_optinteger(L, 3, APR_OS_DEFAULT); status = apr_dir_make_recursive(path, perms, r->pool); lua_pushboolean(L, (status == 0)); return 1; } /* * lua_apr_rmdir; r:rmdir(string) - Removes a directory */ static int lua_apr_rmdir(lua_State *L) { request_rec *r; const char *path; apr_status_t status; r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); path = lua_tostring(L, 2); status = apr_dir_remove(path, r->pool); lua_pushboolean(L, (status == 0)); return 1; } /* * lua_apr_date_parse_rfc; r.date_parse_rfc(string) - Parses a DateTime string */ static int lua_apr_date_parse_rfc(lua_State *L) { const char *input; apr_time_t result; luaL_checktype(L, 1, LUA_TSTRING); input = lua_tostring(L, 1); result = apr_date_parse_rfc(input); if (result == 0) return 0; lua_pushnumber(L, (lua_Number)(result / APR_USEC_PER_SEC)); return 1; } /* * lua_ap_mpm_query; r:mpm_query(info) - Queries for MPM info */ static int lua_ap_mpm_query(lua_State *L) { int x, y; x = lua_tointeger(L, 1); ap_mpm_query(x, &y); lua_pushinteger(L, y); return 1; } /* * lua_ap_expr; r:expr(string) - Evaluates an expr statement. */ static int lua_ap_expr(lua_State *L) { request_rec *r; int x = 0; const char *expr, *err; ap_expr_info_t res; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); expr = lua_tostring(L, 2); res.filename = NULL; res.flags = 0; res.line_number = 0; res.module_index = APLOG_MODULE_INDEX; err = ap_expr_parse(r->pool, r->pool, &res, expr, NULL); if (!err) { x = ap_expr_exec(r, &res, &err); lua_pushboolean(L, x); if (x < 0) { lua_pushstring(L, err); return 2; } return 1; } else { lua_pushboolean(L, 0); lua_pushstring(L, err); return 2; } lua_pushboolean(L, 0); return 1; } /* * lua_ap_regex; r:regex(string, pattern [, flags]) * - Evaluates a regex and returns captures if matched */ static int lua_ap_regex(lua_State *L) { request_rec *r; int i, rv, flags; const char *pattern, *source; char *err; ap_regex_t regex; ap_regmatch_t matches[MODLUA_MAX_REG_MATCH+1]; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); luaL_checktype(L, 3, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); source = lua_tostring(L, 2); pattern = lua_tostring(L, 3); flags = luaL_optinteger(L, 4, 0); rv = ap_regcomp(®ex, pattern, flags); if (rv) { lua_pushboolean(L, 0); err = apr_palloc(r->pool, 256); ap_regerror(rv, ®ex, err, 256); lua_pushstring(L, err); return 2; } if (regex.re_nsub > MODLUA_MAX_REG_MATCH) { lua_pushboolean(L, 0); err = apr_palloc(r->pool, 64); apr_snprintf(err, 64, "regcomp found %d matches; only %d allowed.", regex.re_nsub, MODLUA_MAX_REG_MATCH); lua_pushstring(L, err); return 2; } rv = ap_regexec(®ex, source, MODLUA_MAX_REG_MATCH, matches, 0); if (rv == AP_REG_NOMATCH) { lua_pushboolean(L, 0); return 1; } lua_newtable(L); for (i = 0; i <= regex.re_nsub; i++) { lua_pushinteger(L, i); if (matches[i].rm_so >= 0 && matches[i].rm_eo >= 0) lua_pushstring(L, apr_pstrndup(r->pool, source + matches[i].rm_so, matches[i].rm_eo - matches[i].rm_so)); else lua_pushnil(L); lua_settable(L, -3); } return 1; } /* * lua_ap_scoreboard_process; r:scoreboard_process(a) - returns scoreboard info */ static int lua_ap_scoreboard_process(lua_State *L) { int i; process_score *ps_record; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TNUMBER); i = lua_tointeger(L, 2); ps_record = ap_get_scoreboard_process(i); if (ps_record) { lua_newtable(L); lua_pushstring(L, "connections"); lua_pushnumber(L, ps_record->connections); lua_settable(L, -3); lua_pushstring(L, "keepalive"); lua_pushnumber(L, ps_record->keep_alive); lua_settable(L, -3); lua_pushstring(L, "lingering_close"); lua_pushnumber(L, ps_record->lingering_close); lua_settable(L, -3); lua_pushstring(L, "pid"); lua_pushnumber(L, ps_record->pid); lua_settable(L, -3); lua_pushstring(L, "suspended"); lua_pushnumber(L, ps_record->suspended); lua_settable(L, -3); lua_pushstring(L, "write_completion"); lua_pushnumber(L, ps_record->write_completion); lua_settable(L, -3); lua_pushstring(L, "not_accepting"); lua_pushnumber(L, ps_record->not_accepting); lua_settable(L, -3); lua_pushstring(L, "quiescing"); lua_pushnumber(L, ps_record->quiescing); lua_settable(L, -3); return 1; } return 0; } /* * lua_ap_scoreboard_worker; r:scoreboard_worker(proc, thread) - Returns thread * info */ static int lua_ap_scoreboard_worker(lua_State *L) { int i, j; worker_score *ws_record = NULL; request_rec *r = NULL; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TNUMBER); luaL_checktype(L, 3, LUA_TNUMBER); r = ap_lua_check_request_rec(L, 1); if (!r) return 0; i = lua_tointeger(L, 2); j = lua_tointeger(L, 3); ws_record = apr_palloc(r->pool, sizeof *ws_record); ap_copy_scoreboard_worker(ws_record, i, j); if (ws_record) { lua_newtable(L); lua_pushstring(L, "access_count"); lua_pushnumber(L, ws_record->access_count); lua_settable(L, -3); lua_pushstring(L, "bytes_served"); lua_pushnumber(L, (lua_Number) ws_record->bytes_served); lua_settable(L, -3); lua_pushstring(L, "client"); lua_pushstring(L, ws_record->client); lua_settable(L, -3); lua_pushstring(L, "client64"); lua_pushstring(L, ws_record->client64); lua_settable(L, -3); lua_pushstring(L, "conn_bytes"); lua_pushnumber(L, (lua_Number) ws_record->conn_bytes); lua_settable(L, -3); lua_pushstring(L, "conn_count"); lua_pushnumber(L, ws_record->conn_count); lua_settable(L, -3); lua_pushstring(L, "generation"); lua_pushnumber(L, ws_record->generation); lua_settable(L, -3); lua_pushstring(L, "last_used"); lua_pushnumber(L, (lua_Number) ws_record->last_used); lua_settable(L, -3); lua_pushstring(L, "pid"); lua_pushnumber(L, ws_record->pid); lua_settable(L, -3); lua_pushstring(L, "request"); lua_pushstring(L, ws_record->request); lua_settable(L, -3); lua_pushstring(L, "start_time"); lua_pushnumber(L, (lua_Number) ws_record->start_time); lua_settable(L, -3); lua_pushstring(L, "status"); lua_pushnumber(L, ws_record->status); lua_settable(L, -3); lua_pushstring(L, "stop_time"); lua_pushnumber(L, (lua_Number) ws_record->stop_time); lua_settable(L, -3); lua_pushstring(L, "tid"); lua_pushinteger(L, (lua_Integer) ws_record->tid); lua_settable(L, -3); lua_pushstring(L, "vhost"); lua_pushstring(L, ws_record->vhost); lua_settable(L, -3); #ifdef HAVE_TIMES lua_pushstring(L, "stimes"); lua_pushnumber(L, ws_record->times.tms_stime); lua_settable(L, -3); lua_pushstring(L, "utimes"); lua_pushnumber(L, ws_record->times.tms_utime); lua_settable(L, -3); #endif return 1; } return 0; } /* * lua_ap_clock; r:clock() - Returns timestamp with microsecond precision */ static int lua_ap_clock(lua_State *L) { apr_time_t now; now = apr_time_now(); lua_pushnumber(L, (lua_Number) now); return 1; } /* * lua_ap_add_input_filter; r:add_input_filter(name) - Adds an input filter to * the chain */ static int lua_ap_add_input_filter(lua_State *L) { request_rec *r; const char *filterName; ap_filter_rec_t *filter; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); filterName = lua_tostring(L, 2); filter = ap_get_input_filter_handle(filterName); if (filter) { ap_add_input_filter_handle(filter, NULL, r, r->connection); lua_pushboolean(L, 1); } else lua_pushboolean(L, 0); return 1; } /* * lua_ap_module_info; r:module_info(mod_name) - Returns information about a * loaded module */ static int lua_ap_module_info(lua_State *L) { const char *moduleName; module *mod; luaL_checktype(L, 1, LUA_TSTRING); moduleName = lua_tostring(L, 1); mod = ap_find_linked_module(moduleName); if (mod && mod->cmds) { const command_rec *cmd; lua_newtable(L); lua_pushstring(L, "commands"); lua_newtable(L); for (cmd = mod->cmds; cmd->name; ++cmd) { lua_pushstring(L, cmd->name); lua_pushstring(L, cmd->errmsg); lua_settable(L, -3); } lua_settable(L, -3); return 1; } return 0; } /* * lua_ap_runtime_dir_relative: r:runtime_dir_relative(file): Returns the * filename as relative to the runtime dir */ static int lua_ap_runtime_dir_relative(lua_State *L) { request_rec *r; const char *file; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); file = luaL_optstring(L, 2, "."); lua_pushstring(L, ap_runtime_dir_relative(r->pool, file)); return 1; } /* * lua_ap_set_document_root; r:set_document_root(path) - sets the current doc * root for the request */ static int lua_ap_set_document_root(lua_State *L) { request_rec *r; const char *root; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); root = lua_tostring(L, 2); ap_set_document_root(r, root); return 0; } /* * lua_ap_getdir; r:get_direntries(directory) - Gets all entries of a * directory and returns the directory info as a table */ static int lua_ap_getdir(lua_State *L) { request_rec *r; apr_dir_t *thedir; apr_finfo_t file_info; apr_status_t status; const char *directory; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); directory = lua_tostring(L, 2); if (apr_dir_open(&thedir, directory, r->pool) == APR_SUCCESS) { int i = 0; lua_newtable(L); do { status = apr_dir_read(&file_info, APR_FINFO_NAME, thedir); if (APR_STATUS_IS_INCOMPLETE(status)) { continue; /* ignore un-stat()able files */ } else if (status != APR_SUCCESS) { break; } lua_pushinteger(L, ++i); lua_pushstring(L, file_info.name); lua_settable(L, -3); } while (1); apr_dir_close(thedir); return 1; } else { return 0; } } /* * lua_ap_stat; r:stat(filename [, wanted]) - Runs stat on a file and * returns the file info as a table */ static int lua_ap_stat(lua_State *L) { request_rec *r; const char *filename; apr_finfo_t file_info; apr_int32_t wanted; luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 2, LUA_TSTRING); r = ap_lua_check_request_rec(L, 1); filename = lua_tostring(L, 2); wanted = luaL_optinteger(L, 3, APR_FINFO_MIN); if (apr_stat(&file_info, filename, wanted, r->pool) == OK) { lua_newtable(L); if (wanted & APR_FINFO_MTIME) { lua_pushstring(L, "mtime"); lua_pushnumber(L, (lua_Number) file_info.mtime); lua_settable(L, -3); } if (wanted & APR_FINFO_ATIME) { lua_pushstring(L, "atime"); lua_pushnumber(L, (lua_Number) file_info.atime); lua_settable(L, -3); } if (wanted & APR_FINFO_CTIME) { lua_pushstring(L, "ctime"); lua_pushnumber(L, (lua_Number) file_info.ctime); lua_settable(L, -3); } if (wanted & APR_FINFO_SIZE) { lua_pushstring(L, "size"); lua_pushnumber(L, (lua_Number) file_info.size); lua_settable(L, -3); } if (wanted & APR_FINFO_TYPE) { lua_pushstring(L, "filetype"); lua_pushinteger(L, file_info.filetype); lua_settable(L, -3); } if (wanted & APR_FINFO_PROT) { lua_pushstring(L, "protection"); lua_pushinteger(L, file_info.protection); lua_settable(L, -3); } return 1; } else { return 0; } } /* * lua_ap_loaded_modules; r:loaded_modules() - Returns a list of loaded modules */ static int lua_ap_loaded_modules(lua_State *L) { int i; lua_newtable(L); for (i = 0; ap_loaded_modules[i] && ap_loaded_modules[i]->name; i++) { lua_pushinteger(L, i + 1); lua_pushstring(L, ap_loaded_modules[i]->name); lua_settable(L, -3); } return 1; } /* * lua_ap_server_info; r:server_info() - Returns server info, such as the * executable filename, server root, mpm etc */ static int lua_ap_server_info(lua_State *L) { lua_newtable(L); lua_pushstring(L, "server_executable"); lua_pushstring(L, ap_server_argv0); lua_settable(L, -3); lua_pushstring(L, "server_root"); lua_pushstring(L, ap_server_root); lua_settable(L, -3); lua_pushstring(L, "scoreboard_fname"); lua_pushstring(L, ap_scoreboard_fname); lua_settable(L, -3); lua_pushstring(L, "server_mpm"); lua_pushstring(L, ap_show_mpm()); lua_settable(L, -3); return 1; } /* * === Auto-scraped functions === */ /** * ap_set_context_info: Set context_prefix and context_document_root. * @param r The request * @param prefix the URI prefix, without trailing slash * @param document_root the corresponding directory on disk, without trailing * slash * @note If one of prefix of document_root is NULL, the corrsponding * property will not be changed. */ static int lua_ap_set_context_info(lua_State *L) { request_rec *r; const char *prefix; const char *document_root; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); prefix = lua_tostring(L, 2); luaL_checktype(L, 3, LUA_TSTRING); document_root = lua_tostring(L, 3); ap_set_context_info(r, prefix, document_root); return 0; } /** * ap_os_escape_path (apr_pool_t *p, const char *path, int partial) * convert an OS path to a URL in an OS dependant way. * @param p The pool to allocate from * @param path The path to convert * @param partial if set, assume that the path will be appended to something * with a '/' in it (and thus does not prefix "./") * @return The converted URL */ static int lua_ap_os_escape_path(lua_State *L) { char *returnValue; request_rec *r; const char *path; int partial = 0; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); path = lua_tostring(L, 2); if (lua_isboolean(L, 3)) partial = lua_toboolean(L, 3); returnValue = ap_os_escape_path(r->pool, path, partial); lua_pushstring(L, returnValue); return 1; } /** * ap_escape_logitem (apr_pool_t *p, const char *str) * Escape a string for logging * @param p The pool to allocate from * @param str The string to escape * @return The escaped string */ static int lua_ap_escape_logitem(lua_State *L) { char *returnValue; request_rec *r; const char *str; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TSTRING); str = lua_tostring(L, 2); returnValue = ap_escape_logitem(r->pool, str); lua_pushstring(L, returnValue); return 1; } /** * ap_strcmp_match (const char *str, const char *expected) * Determine if a string matches a pattern containing the wildcards '?' or '*' * @param str The string to check * @param expected The pattern to match against * @param ignoreCase Whether to ignore case when matching * @return 1 if the two strings match, 0 otherwise */ static int lua_ap_strcmp_match(lua_State *L) { int returnValue; const char *str; const char *expected; int ignoreCase = 0; luaL_checktype(L, 1, LUA_TSTRING); str = lua_tostring(L, 1); luaL_checktype(L, 2, LUA_TSTRING); expected = lua_tostring(L, 2); if (lua_isboolean(L, 3)) ignoreCase = lua_toboolean(L, 3); if (!ignoreCase) returnValue = ap_strcmp_match(str, expected); else returnValue = ap_strcasecmp_match(str, expected); lua_pushboolean(L, (!returnValue)); return 1; } /** * ap_set_keepalive (request_rec *r) * Set the keepalive status for this request * @param r The current request * @return 1 if keepalive can be set, 0 otherwise */ static int lua_ap_set_keepalive(lua_State *L) { int returnValue; request_rec *r; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); returnValue = ap_set_keepalive(r); lua_pushboolean(L, returnValue); return 1; } /** * ap_make_etag (request_rec *r, int force_weak) * Construct an entity tag from the resource information. If it's a real * file, build in some of the file characteristics. * @param r The current request * @param force_weak Force the entity tag to be weak - it could be modified * again in as short an interval. * @return The entity tag */ static int lua_ap_make_etag(lua_State *L) { char *returnValue; request_rec *r; int force_weak; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TBOOLEAN); force_weak = (int)luaL_optinteger(L, 2, 0); returnValue = ap_make_etag(r, force_weak); lua_pushstring(L, returnValue); return 1; } /** * ap_send_interim_response (request_rec *r, int send_headers) * Send an interim (HTTP 1xx) response immediately. * @param r The request * @param send_headers Whether to send&clear headers in r->headers_out */ static int lua_ap_send_interim_response(lua_State *L) { request_rec *r; int send_headers = 0; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); if (lua_isboolean(L, 2)) send_headers = lua_toboolean(L, 2); ap_send_interim_response(r, send_headers); return 0; } /** * ap_custom_response (request_rec *r, int status, const char *string) * Install a custom response handler for a given status * @param r The current request * @param status The status for which the custom response should be used * @param string The custom response. This can be a static string, a file * or a URL */ static int lua_ap_custom_response(lua_State *L) { request_rec *r; int status; const char *string; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); luaL_checktype(L, 2, LUA_TNUMBER); status = lua_tointeger(L, 2); luaL_checktype(L, 3, LUA_TSTRING); string = lua_tostring(L, 3); ap_custom_response(r, status, string); return 0; } /** * ap_exists_config_define (const char *name) * Check for a definition from the server command line * @param name The define to check for * @return 1 if defined, 0 otherwise */ static int lua_ap_exists_config_define(lua_State *L) { int returnValue; const char *name; luaL_checktype(L, 1, LUA_TSTRING); name = lua_tostring(L, 1); returnValue = ap_exists_config_define(name); lua_pushboolean(L, returnValue); return 1; } static int lua_ap_get_server_name_for_url(lua_State *L) { const char *servername; request_rec *r; luaL_checktype(L, 1, LUA_TUSERDATA); r = ap_lua_check_request_rec(L, 1); servername = ap_get_server_name_for_url(r); lua_pushstring(L, servername); return 1; } /* ap_state_query (int query_code) item starts a new field */ static int lua_ap_state_query(lua_State *L) { int returnValue; int query_code; luaL_checktype(L, 1, LUA_TNUMBER); query_code = lua_tointeger(L, 1); returnValue = ap_state_query(query_code); lua_pushinteger(L, returnValue); return 1; } /* * lua_ap_usleep; r:usleep(microseconds) * - Sleep for the specified number of microseconds. */ static int lua_ap_usleep(lua_State *L) { apr_interval_time_t msec; luaL_checktype(L, 1, LUA_TNUMBER); msec = (apr_interval_time_t)lua_tonumber(L, 1); apr_sleep(msec); return 0; } /* END dispatch methods for request_rec fields */ static int req_dispatch(lua_State *L) { apr_hash_t *dispatch; req_fun_t *rft; request_rec *r = ap_lua_check_request_rec(L, 1); const char *name = luaL_checkstring(L, 2); lua_pop(L, 2); lua_getfield(L, LUA_REGISTRYINDEX, "Apache2.Request.dispatch"); dispatch = lua_touserdata(L, 1); lua_pop(L, 1); rft = apr_hash_get(dispatch, name, APR_HASH_KEY_STRING); if (rft) { switch (rft->type) { case APL_REQ_FUNTYPE_TABLE:{ req_table_t *rs; req_field_apr_table_f func = (req_field_apr_table_f)rft->fun; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01486) "request_rec->dispatching %s -> apr table", name); rs = (*func)(r); ap_lua_push_apr_table(L, rs); return 1; } case APL_REQ_FUNTYPE_LUACFUN:{ lua_CFunction func = (lua_CFunction)rft->fun; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01487) "request_rec->dispatching %s -> lua_CFunction", name); lua_pushcfunction(L, func); return 1; } case APL_REQ_FUNTYPE_STRING:{ req_field_string_f func = (req_field_string_f)rft->fun; char *rs; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01488) "request_rec->dispatching %s -> string", name); rs = (*func) (r); lua_pushstring(L, rs); return 1; } case APL_REQ_FUNTYPE_INT:{ req_field_int_f func = (req_field_int_f)rft->fun; int rs; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01489) "request_rec->dispatching %s -> int", name); rs = (*func) (r); lua_pushinteger(L, rs); return 1; } case APL_REQ_FUNTYPE_BOOLEAN:{ req_field_int_f func = (req_field_int_f)rft->fun; int rs; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01490) "request_rec->dispatching %s -> boolean", name); rs = (*func) (r); lua_pushboolean(L, rs); return 1; } } } ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01491) "nothing for %s", name); return 0; } /* helper function for the logging functions below */ static int req_log_at(lua_State *L, int level) { const char *msg; request_rec *r = ap_lua_check_request_rec(L, 1); lua_Debug dbg; lua_getstack(L, 1, &dbg); lua_getinfo(L, "Sl", &dbg); msg = luaL_checkstring(L, 2); /* Intentional no APLOGNO */ ap_log_rerror(dbg.source, dbg.currentline, APLOG_MODULE_INDEX, level, 0, r, "%s", msg); return 0; } /* r:debug(String) and friends which use apache logging */ static int req_emerg(lua_State *L) { return req_log_at(L, APLOG_EMERG); } static int req_alert(lua_State *L) { return req_log_at(L, APLOG_ALERT); } static int req_crit(lua_State *L) { return req_log_at(L, APLOG_CRIT); } static int req_err(lua_State *L) { return req_log_at(L, APLOG_ERR); } static int req_warn(lua_State *L) { return req_log_at(L, APLOG_WARNING); } static int req_notice(lua_State *L) { return req_log_at(L, APLOG_NOTICE); } static int req_info(lua_State *L) { return req_log_at(L, APLOG_INFO); } static int req_debug(lua_State *L) { return req_log_at(L, APLOG_DEBUG); } static int lua_ivm_get(lua_State *L) { const char *key, *raw_key; apr_pool_t *pool; lua_ivm_object *object = NULL; request_rec *r = ap_lua_check_request_rec(L, 1); key = luaL_checkstring(L, 2); raw_key = apr_pstrcat(r->pool, "lua_ivm_", key, NULL); apr_global_mutex_lock(lua_ivm_mutex); pool = *((apr_pool_t**) apr_shm_baseaddr_get(lua_ivm_shm)); apr_pool_userdata_get((void **)&object, raw_key, pool); if (object) { if (object->type == LUA_TBOOLEAN) lua_pushboolean(L, (int) object->number); else if (object->type == LUA_TNUMBER) lua_pushnumber(L, object->number); else if (object->type == LUA_TSTRING) lua_pushlstring(L, object->vb.buf, object->size); apr_global_mutex_unlock(lua_ivm_mutex); return 1; } else { apr_global_mutex_unlock(lua_ivm_mutex); return 0; } } static int lua_ivm_set(lua_State *L) { const char *key, *raw_key; const char *value = NULL; apr_pool_t *pool; size_t str_len; lua_ivm_object *object = NULL; request_rec *r = ap_lua_check_request_rec(L, 1); key = luaL_checkstring(L, 2); luaL_checkany(L, 3); raw_key = apr_pstrcat(r->pool, "lua_ivm_", key, NULL); apr_global_mutex_lock(lua_ivm_mutex); pool = *((apr_pool_t**) apr_shm_baseaddr_get(lua_ivm_shm)); apr_pool_userdata_get((void **)&object, raw_key, pool); if (!object) { object = apr_pcalloc(pool, sizeof(lua_ivm_object)); ap_varbuf_init(pool, &object->vb, 2); object->size = 1; object->vb_size = 1; } object->type = lua_type(L, 3); if (object->type == LUA_TNUMBER) object->number = lua_tonumber(L, 3); else if (object->type == LUA_TBOOLEAN) object->number = lua_tonumber(L, 3); else if (object->type == LUA_TSTRING) { value = lua_tolstring(L, 3, &str_len); str_len++; /* add trailing \0 */ if ( str_len > object->vb_size) { ap_varbuf_grow(&object->vb, str_len); object->vb_size = str_len; } object->size = str_len-1; memset(object->vb.buf, 0, str_len); memcpy(object->vb.buf, value, str_len-1); } apr_pool_userdata_set(object, raw_key, NULL, pool); apr_global_mutex_unlock(lua_ivm_mutex); return 0; } static int lua_get_cookie(lua_State *L) { const char *key, *cookie; request_rec *r = ap_lua_check_request_rec(L, 1); key = luaL_checkstring(L, 2); cookie = NULL; ap_cookie_read(r, key, &cookie, 0); if (cookie != NULL) { lua_pushstring(L, cookie); return 1; } return 0; } static int lua_set_cookie(lua_State *L) { const char *key, *value, *out, *path = "", *domain = ""; const char *strexpires = "", *strdomain = "", *strpath = ""; int secure = 0, expires = 0, httponly = 0; char cdate[APR_RFC822_DATE_LEN+1]; apr_status_t rv; request_rec *r = ap_lua_check_request_rec(L, 1); /* New >= 2.4.8 method: */ if (lua_istable(L, 2)) { /* key */ lua_pushstring(L, "key"); lua_gettable(L, -2); key = luaL_checkstring(L, -1); lua_pop(L, 1); /* value */ lua_pushstring(L, "value"); lua_gettable(L, -2); value = luaL_checkstring(L, -1); lua_pop(L, 1); /* expiry */ lua_pushstring(L, "expires"); lua_gettable(L, -2); expires = (int)luaL_optinteger(L, -1, 0); lua_pop(L, 1); /* secure */ lua_pushstring(L, "secure"); lua_gettable(L, -2); if (lua_isboolean(L, -1)) { secure = lua_toboolean(L, -1); } lua_pop(L, 1); /* httponly */ lua_pushstring(L, "httponly"); lua_gettable(L, -2); if (lua_isboolean(L, -1)) { httponly = lua_toboolean(L, -1); } lua_pop(L, 1); /* path */ lua_pushstring(L, "path"); lua_gettable(L, -2); path = luaL_optstring(L, -1, "/"); lua_pop(L, 1); /* domain */ lua_pushstring(L, "domain"); lua_gettable(L, -2); domain = luaL_optstring(L, -1, ""); lua_pop(L, 1); } /* Old <= 2.4.7 method: */ else { key = luaL_checkstring(L, 2); value = luaL_checkstring(L, 3); secure = 0; if (lua_isboolean(L, 4)) { secure = lua_toboolean(L, 4); } expires = luaL_optinteger(L, 5, 0); } /* Calculate expiry if set */ if (expires > 0) { rv = apr_rfc822_date(cdate, apr_time_from_sec(expires)); if (rv == APR_SUCCESS) { strexpires = apr_psprintf(r->pool, "Expires=%s;", cdate); } } /* Create path segment */ if (path != NULL && strlen(path) > 0) { strpath = apr_psprintf(r->pool, "Path=%s;", path); } /* Create domain segment */ if (domain != NULL && strlen(domain) > 0) { /* Domain does NOT like quotes in most browsers, so let's avoid that */ strdomain = apr_psprintf(r->pool, "Domain=%s;", domain); } /* URL-encode key/value */ value = ap_escape_urlencoded(r->pool, value); key = ap_escape_urlencoded(r->pool, key); /* Create the header */ out = apr_psprintf(r->pool, "%s=%s; %s %s %s %s %s", key, value, secure ? "Secure;" : "", expires ? strexpires : "", httponly ? "HttpOnly;" : "", *strdomain ? strdomain : "", *strpath ? strpath : ""); apr_table_add(r->err_headers_out, "Set-Cookie", out); return 0; } static apr_uint64_t ap_ntoh64(const apr_uint64_t *input) { apr_uint64_t rval; unsigned char *data = (unsigned char *)&rval; if (APR_IS_BIGENDIAN) { return *input; } data[0] = *input >> 56; data[1] = *input >> 48; data[2] = *input >> 40; data[3] = *input >> 32; data[4] = *input >> 24; data[5] = *input >> 16; data[6] = *input >> 8; data[7] = *input >> 0; return rval; } static int lua_websocket_greet(lua_State *L) { const char *key = NULL; unsigned char digest[APR_SHA1_DIGESTSIZE]; apr_sha1_ctx_t sha1; char *encoded; int encoded_len; request_rec *r = ap_lua_check_request_rec(L, 1); key = apr_table_get(r->headers_in, "Sec-WebSocket-Key"); if (key != NULL) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03011) "Websocket: Got websocket key: %s", key); key = apr_pstrcat(r->pool, key, "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", NULL); apr_sha1_init(&sha1); apr_sha1_update(&sha1, key, strlen(key)); apr_sha1_final(digest, &sha1); encoded_len = apr_base64_encode_len(APR_SHA1_DIGESTSIZE); if (encoded_len) { encoded = apr_palloc(r->pool, encoded_len); encoded_len = apr_base64_encode(encoded, (char*) digest, APR_SHA1_DIGESTSIZE); r->status = 101; apr_table_setn(r->headers_out, "Upgrade", "websocket"); apr_table_setn(r->headers_out, "Connection", "Upgrade"); apr_table_setn(r->headers_out, "Sec-WebSocket-Accept", encoded); /* Trick httpd into NOT using the chunked filter, IMPORTANT!!!111*/ apr_table_setn(r->headers_out, "Transfer-Encoding", "chunked"); r->clength = 0; r->bytes_sent = 0; r->read_chunked = 0; ap_rflush(r); ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03012) "Websocket: Upgraded from HTTP to Websocket"); lua_pushboolean(L, 1); return 1; } } ap_log_rerror(APLOG_MARK, APLOG_NOTICE, 0, r, APLOGNO(02666) "Websocket: Upgrade from HTTP to Websocket failed"); return 0; } static apr_status_t lua_websocket_readbytes(conn_rec* c, apr_bucket_brigade *brigade, char* buffer, apr_off_t len) { apr_size_t delivered; apr_status_t rv; rv = ap_get_brigade(c->input_filters, brigade, AP_MODE_READBYTES, APR_BLOCK_READ, len); if (rv == APR_SUCCESS) { delivered = len; rv = apr_brigade_flatten(brigade, buffer, &delivered); if ((rv == APR_SUCCESS) && (delivered < len)) { rv = APR_INCOMPLETE; } } apr_brigade_cleanup(brigade); return rv; } static int lua_websocket_peek(lua_State *L) { apr_status_t rv; apr_bucket_brigade *brigade; request_rec *r = ap_lua_check_request_rec(L, 1); brigade = apr_brigade_create(r->connection->pool, r->connection->bucket_alloc); rv = ap_get_brigade(r->connection->input_filters, brigade, AP_MODE_READBYTES, APR_NONBLOCK_READ, 1); if (rv == APR_SUCCESS) { lua_pushboolean(L, 1); } else { lua_pushboolean(L, 0); } apr_brigade_cleanup(brigade); return 1; } static int lua_websocket_read(lua_State *L) { apr_status_t rv; int do_read = 1; int n = 0; apr_size_t plen = 0; unsigned short payload_short = 0; apr_uint64_t payload_long = 0; unsigned char *mask_bytes; char byte; apr_bucket_brigade *brigade; conn_rec* c; request_rec *r = ap_lua_check_request_rec(L, 1); c = r->connection; mask_bytes = apr_pcalloc(r->pool, 4); brigade = apr_brigade_create(r->pool, c->bucket_alloc); while (do_read) { do_read = 0; /* Get opcode and FIN bit */ rv = lua_websocket_readbytes(c, brigade, &byte, 1); if (rv == APR_SUCCESS) { unsigned char ubyte, fin, opcode, mask, payload; ubyte = (unsigned char)byte; /* fin bit is the first bit */ fin = ubyte >> (CHAR_BIT - 1); /* opcode is the last four bits (there's 3 reserved bits we don't care about) */ opcode = ubyte & 0xf; /* Get the payload length and mask bit */ rv = lua_websocket_readbytes(c, brigade, &byte, 1); if (rv == APR_SUCCESS) { ubyte = (unsigned char)byte; /* Mask is the first bit */ mask = ubyte >> (CHAR_BIT - 1); /* Payload is the last 7 bits */ payload = ubyte & 0x7f; plen = payload; /* Extended payload? */ if (payload == 126) { rv = lua_websocket_readbytes(c, brigade, (char*) &payload_short, 2); if (rv != APR_SUCCESS) { return 0; } plen = ntohs(payload_short); } /* Super duper extended payload? */ if (payload == 127) { rv = lua_websocket_readbytes(c, brigade, (char*) &payload_long, 8); if (rv != APR_SUCCESS) { return 0; } plen = ap_ntoh64(&payload_long); } ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03210) "Websocket: Reading %" APR_SIZE_T_FMT " (%s) bytes, masking is %s. %s", plen, (payload >= 126) ? "extra payload" : "no extra payload", mask ? "on" : "off", fin ? "This is a final frame" : "more to follow"); if (mask) { rv = lua_websocket_readbytes(c, brigade, (char*) mask_bytes, 4); if (rv != APR_SUCCESS) { return 0; } } if (plen < (HUGE_STRING_LEN*1024) && plen > 0) { apr_size_t remaining = plen; char *buffer = apr_palloc(r->pool, plen+1); buffer[plen] = 0; rv = lua_websocket_readbytes(c, brigade, buffer, remaining); if (rv != APR_SUCCESS) { return 0; } ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "Websocket: Frame contained %" APR_SIZE_T_FMT \ " bytes, pushed to Lua stack", remaining); if (mask) { for (n = 0; n < plen; n++) { buffer[n] ^= mask_bytes[n%4]; } } lua_pushlstring(L, buffer, (size_t) plen); /* push to stack */ lua_pushboolean(L, fin); /* push FIN bit to stack as boolean */ return 2; } /* Decide if we need to react to the opcode or not */ if (opcode == 0x09) { /* ping */ char frame[2]; apr_bucket *b; frame[0] = 0x8A; frame[1] = 0; /* Pong! */ b = apr_bucket_transient_create(frame, 2, c->bucket_alloc); APR_BRIGADE_INSERT_TAIL(brigade, b); rv = ap_pass_brigade(c->output_filters, brigade); apr_brigade_cleanup(brigade); if (rv != APR_SUCCESS) { return 0; } do_read = 1; } } } } return 0; } static int lua_websocket_write(lua_State *L) { const char *string; apr_status_t rv; size_t len; int raw = 0; char prelude; request_rec *r = ap_lua_check_request_rec(L, 1); if (lua_isboolean(L, 3)) { raw = lua_toboolean(L, 3); } string = lua_tolstring(L, 2, &len); if (raw != 1) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03013) "Websocket: Writing framed message to client"); prelude = 0x81; /* text frame, FIN */ ap_rputc(prelude, r); if (len < 126) { ap_rputc(len, r); } else if (len < 65535) { apr_uint16_t slen = len; ap_rputc(126, r); slen = htons(slen); ap_rwrite((char*) &slen, 2, r); } else { apr_uint64_t llen = len; ap_rputc(127, r); llen = ap_ntoh64(&llen); /* ntoh doubles as hton */ ap_rwrite((char*) &llen, 8, r); } } else { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03014) "Websocket: Writing raw message to client"); } ap_rwrite(string, len, r); rv = ap_rflush(r); if (rv == APR_SUCCESS) { lua_pushboolean(L, 1); } else { lua_pushboolean(L, 0); } return 1; } static int lua_websocket_close(lua_State *L) { apr_socket_t *sock; char prelude[2]; request_rec *r = ap_lua_check_request_rec(L, 1); sock = ap_get_conn_socket(r->connection); /* Send a header that says: socket is closing. */ prelude[0] = 0x88; /* closing socket opcode */ prelude[1] = 0; /* zero length frame */ ap_rwrite(prelude, 2, r); /* Close up tell the MPM and filters to back off */ apr_socket_close(sock); r->output_filters = NULL; r->connection->keepalive = AP_CONN_CLOSE; return 0; } static int lua_websocket_ping(lua_State *L) { apr_socket_t *sock; apr_size_t plen; char prelude[2]; apr_status_t rv; request_rec *r = ap_lua_check_request_rec(L, 1); sock = ap_get_conn_socket(r->connection); /* Send a header that says: PING. */ prelude[0] = 0x89; /* ping opcode */ prelude[1] = 0; plen = 2; apr_socket_send(sock, prelude, &plen); /* Get opcode and FIN bit from pong */ plen = 2; rv = apr_socket_recv(sock, prelude, &plen); if (rv == APR_SUCCESS) { unsigned char opcode = prelude[0]; unsigned char len = prelude[1]; unsigned char mask = len >> 7; if (mask) len -= 128; plen = len; ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03015) "Websocket: Got PONG opcode: %x", opcode); if (opcode == 0x8A) { lua_pushboolean(L, 1); } else { lua_pushboolean(L, 0); } if (plen > 0) { ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "Websocket: Reading %" APR_SIZE_T_FMT " bytes of PONG", plen); return 1; } if (mask) { plen = 2; apr_socket_recv(sock, prelude, &plen); plen = 2; apr_socket_recv(sock, prelude, &plen); } } else { lua_pushboolean(L, 0); } return 1; } #define APLUA_REQ_TRACE(lev) static int req_trace##lev(lua_State *L) \ { \ return req_log_at(L, APLOG_TRACE##lev); \ } APLUA_REQ_TRACE(1) APLUA_REQ_TRACE(2) APLUA_REQ_TRACE(3) APLUA_REQ_TRACE(4) APLUA_REQ_TRACE(5) APLUA_REQ_TRACE(6) APLUA_REQ_TRACE(7) APLUA_REQ_TRACE(8) /* handle r.status = 201 */ static int req_newindex(lua_State *L) { const char *key; /* request_rec* r = lua_touserdata(L, lua_upvalueindex(1)); */ /* const char* key = luaL_checkstring(L, -2); */ request_rec *r = ap_lua_check_request_rec(L, 1); key = luaL_checkstring(L, 2); if (0 == strcmp("args", key)) { const char *value = luaL_checkstring(L, 3); r->args = apr_pstrdup(r->pool, value); return 0; } if (0 == strcmp("content_type", key)) { const char *value = luaL_checkstring(L, 3); ap_set_content_type(r, apr_pstrdup(r->pool, value)); return 0; } if (0 == strcmp("filename", key)) { const char *value = luaL_checkstring(L, 3); r->filename = apr_pstrdup(r->pool, value); return 0; } if (0 == strcmp("handler", key)) { const char *value = luaL_checkstring(L, 3); r->handler = apr_pstrdup(r->pool, value); return 0; } if (0 == strcmp("proxyreq", key)) { int value = luaL_checkinteger(L, 3); r->proxyreq = value; return 0; } if (0 == strcmp("status", key)) { int code = luaL_checkinteger(L, 3); r->status = code; return 0; } if (0 == strcmp("uri", key)) { const char *value = luaL_checkstring(L, 3); r->uri = apr_pstrdup(r->pool, value); return 0; } if (0 == strcmp("user", key)) { const char *value = luaL_checkstring(L, 3); r->user = apr_pstrdup(r->pool, value); return 0; } lua_pushstring(L, apr_psprintf(r->pool, "Property [%s] may not be set on a request_rec", key)); lua_error(L); return 0; } /* helper function for walking config trees */ static void read_cfg_tree(lua_State *L, request_rec *r, ap_directive_t *rcfg) { int x = 0; const char* value; ap_directive_t *cfg; lua_newtable(L); for (cfg = rcfg; cfg; cfg = cfg->next) { x++; lua_pushnumber(L, x); lua_newtable(L); value = apr_psprintf(r->pool, "%s %s", cfg->directive, cfg->args); lua_pushstring(L, "directive"); lua_pushstring(L, value); lua_settable(L, -3); lua_pushstring(L, "file"); lua_pushstring(L, cfg->filename); lua_settable(L, -3); lua_pushstring(L, "line"); lua_pushnumber(L, cfg->line_num); lua_settable(L, -3); if (cfg->first_child) { lua_pushstring(L, "children"); read_cfg_tree(L, r, cfg->first_child); lua_settable(L, -3); } lua_settable(L, -3); } } static int lua_ap_get_config(lua_State *L) { request_rec *r = ap_lua_check_request_rec(L, 1); read_cfg_tree(L, r, ap_conftree); return 1; } /* Hack, hack, hack...! TODO: Make this actually work properly */ static int lua_ap_get_active_config(lua_State *L) { ap_directive_t *subdir; ap_directive_t *dir = ap_conftree; request_rec *r = ap_lua_check_request_rec(L, 1); for (dir = ap_conftree; dir; dir = dir->next) { if (ap_strcasestr(dir->directive, "first_child) { for (subdir = dir->first_child; subdir; subdir = subdir->next) { if (ap_strcasecmp_match(subdir->directive, "servername") && !ap_strcasecmp_match(r->hostname, subdir->args)) { read_cfg_tree(L, r, dir->first_child); return 1; } if (ap_strcasecmp_match(subdir->directive, "serveralias") && !ap_strcasecmp_match(r->hostname, subdir->args)) { read_cfg_tree(L, r, dir->first_child); return 1; } } } } return 0; } static const struct luaL_Reg request_methods[] = { {"__index", req_dispatch}, {"__newindex", req_newindex}, /* {"__newindex", req_set_field}, */ {NULL, NULL} }; static const struct luaL_Reg connection_methods[] = { {NULL, NULL} }; static const char* lua_ap_auth_name(request_rec* r) { const char *name; name = ap_auth_name(r); return name ? name : ""; } static const char* lua_ap_get_server_name(request_rec* r) { const char *name; name = ap_get_server_name(r); return name ? name : "localhost"; } static const struct luaL_Reg server_methods[] = { {NULL, NULL} }; static req_fun_t *makefun(const void *fun, int type, apr_pool_t *pool) { req_fun_t *rft = apr_palloc(pool, sizeof(req_fun_t)); rft->fun = fun; rft->type = type; return rft; } void ap_lua_load_request_lmodule(lua_State *L, apr_pool_t *p) { apr_hash_t *dispatch = apr_hash_make(p); apr_hash_set(dispatch, "puts", APR_HASH_KEY_STRING, makefun(&req_puts, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "write", APR_HASH_KEY_STRING, makefun(&req_write, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "document_root", APR_HASH_KEY_STRING, makefun(&req_document_root, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "context_prefix", APR_HASH_KEY_STRING, makefun(&req_context_prefix, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "context_document_root", APR_HASH_KEY_STRING, makefun(&req_context_document_root, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "parseargs", APR_HASH_KEY_STRING, makefun(&req_parseargs, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "parsebody", APR_HASH_KEY_STRING, makefun(&req_parsebody, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "debug", APR_HASH_KEY_STRING, makefun(&req_debug, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "info", APR_HASH_KEY_STRING, makefun(&req_info, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "notice", APR_HASH_KEY_STRING, makefun(&req_notice, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "warn", APR_HASH_KEY_STRING, makefun(&req_warn, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "err", APR_HASH_KEY_STRING, makefun(&req_err, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "crit", APR_HASH_KEY_STRING, makefun(&req_crit, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "alert", APR_HASH_KEY_STRING, makefun(&req_alert, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "emerg", APR_HASH_KEY_STRING, makefun(&req_emerg, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace1", APR_HASH_KEY_STRING, makefun(&req_trace1, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace2", APR_HASH_KEY_STRING, makefun(&req_trace2, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace3", APR_HASH_KEY_STRING, makefun(&req_trace3, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace4", APR_HASH_KEY_STRING, makefun(&req_trace4, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace5", APR_HASH_KEY_STRING, makefun(&req_trace5, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace6", APR_HASH_KEY_STRING, makefun(&req_trace6, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace7", APR_HASH_KEY_STRING, makefun(&req_trace7, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "trace8", APR_HASH_KEY_STRING, makefun(&req_trace8, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "add_output_filter", APR_HASH_KEY_STRING, makefun(&req_add_output_filter, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "construct_url", APR_HASH_KEY_STRING, makefun(&req_construct_url, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "escape_html", APR_HASH_KEY_STRING, makefun(&req_escape_html, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "ssl_var_lookup", APR_HASH_KEY_STRING, makefun(&req_ssl_var_lookup, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "is_https", APR_HASH_KEY_STRING, makefun(&req_ssl_is_https_field, APL_REQ_FUNTYPE_BOOLEAN, p)); apr_hash_set(dispatch, "assbackwards", APR_HASH_KEY_STRING, makefun(&req_assbackwards_field, APL_REQ_FUNTYPE_BOOLEAN, p)); apr_hash_set(dispatch, "status", APR_HASH_KEY_STRING, makefun(&req_status_field, APL_REQ_FUNTYPE_INT, p)); apr_hash_set(dispatch, "protocol", APR_HASH_KEY_STRING, makefun(&req_protocol_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "range", APR_HASH_KEY_STRING, makefun(&req_range_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "content_type", APR_HASH_KEY_STRING, makefun(&req_content_type_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "content_encoding", APR_HASH_KEY_STRING, makefun(&req_content_encoding_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "ap_auth_type", APR_HASH_KEY_STRING, makefun(&req_ap_auth_type_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "unparsed_uri", APR_HASH_KEY_STRING, makefun(&req_unparsed_uri_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "user", APR_HASH_KEY_STRING, makefun(&req_user_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "filename", APR_HASH_KEY_STRING, makefun(&req_filename_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "canonical_filename", APR_HASH_KEY_STRING, makefun(&req_canonical_filename_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "path_info", APR_HASH_KEY_STRING, makefun(&req_path_info_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "args", APR_HASH_KEY_STRING, makefun(&req_args_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "handler", APR_HASH_KEY_STRING, makefun(&req_handler_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "hostname", APR_HASH_KEY_STRING, makefun(&req_hostname_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "uri", APR_HASH_KEY_STRING, makefun(&req_uri_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "the_request", APR_HASH_KEY_STRING, makefun(&req_the_request_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "log_id", APR_HASH_KEY_STRING, makefun(&req_log_id_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "useragent_ip", APR_HASH_KEY_STRING, makefun(&req_useragent_ip_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "method", APR_HASH_KEY_STRING, makefun(&req_method_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "proxyreq", APR_HASH_KEY_STRING, makefun(&req_proxyreq_field, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "headers_in", APR_HASH_KEY_STRING, makefun(&req_headers_in, APL_REQ_FUNTYPE_TABLE, p)); apr_hash_set(dispatch, "headers_in_table", APR_HASH_KEY_STRING, makefun(&req_headers_in_table, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "headers_out", APR_HASH_KEY_STRING, makefun(&req_headers_out, APL_REQ_FUNTYPE_TABLE, p)); apr_hash_set(dispatch, "headers_out_table", APR_HASH_KEY_STRING, makefun(&req_headers_out_table, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "err_headers_out", APR_HASH_KEY_STRING, makefun(&req_err_headers_out, APL_REQ_FUNTYPE_TABLE, p)); apr_hash_set(dispatch, "err_headers_out_table", APR_HASH_KEY_STRING, makefun(&req_err_headers_out_table, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "notes", APR_HASH_KEY_STRING, makefun(&req_notes, APL_REQ_FUNTYPE_TABLE, p)); apr_hash_set(dispatch, "notes_table", APR_HASH_KEY_STRING, makefun(&req_notes_table, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "subprocess_env", APR_HASH_KEY_STRING, makefun(&req_subprocess_env, APL_REQ_FUNTYPE_TABLE, p)); apr_hash_set(dispatch, "subprocess_env_table", APR_HASH_KEY_STRING, makefun(&req_subprocess_env_table, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "flush", APR_HASH_KEY_STRING, makefun(&lua_ap_rflush, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "port", APR_HASH_KEY_STRING, makefun(&req_ap_get_server_port, APL_REQ_FUNTYPE_INT, p)); apr_hash_set(dispatch, "banner", APR_HASH_KEY_STRING, makefun(&ap_get_server_banner, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "options", APR_HASH_KEY_STRING, makefun(&lua_ap_options, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "allowoverrides", APR_HASH_KEY_STRING, makefun(&lua_ap_allowoverrides, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "started", APR_HASH_KEY_STRING, makefun(&lua_ap_started, APL_REQ_FUNTYPE_INT, p)); apr_hash_set(dispatch, "basic_auth_pw", APR_HASH_KEY_STRING, makefun(&lua_ap_basic_auth_pw, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "limit_req_body", APR_HASH_KEY_STRING, makefun(&lua_ap_limit_req_body, APL_REQ_FUNTYPE_INT, p)); apr_hash_set(dispatch, "server_built", APR_HASH_KEY_STRING, makefun(&ap_get_server_built, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "is_initial_req", APR_HASH_KEY_STRING, makefun(&lua_ap_is_initial_req, APL_REQ_FUNTYPE_BOOLEAN, p)); apr_hash_set(dispatch, "remaining", APR_HASH_KEY_STRING, makefun(&req_remaining_field, APL_REQ_FUNTYPE_INT, p)); apr_hash_set(dispatch, "some_auth_required", APR_HASH_KEY_STRING, makefun(&lua_ap_some_auth_required, APL_REQ_FUNTYPE_BOOLEAN, p)); apr_hash_set(dispatch, "server_name", APR_HASH_KEY_STRING, makefun(&lua_ap_get_server_name, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "auth_name", APR_HASH_KEY_STRING, makefun(&lua_ap_auth_name, APL_REQ_FUNTYPE_STRING, p)); apr_hash_set(dispatch, "sendfile", APR_HASH_KEY_STRING, makefun(&lua_ap_sendfile, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "dbacquire", APR_HASH_KEY_STRING, makefun(&lua_db_acquire, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "stat", APR_HASH_KEY_STRING, makefun(&lua_ap_stat, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "get_direntries", APR_HASH_KEY_STRING, makefun(&lua_ap_getdir, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "regex", APR_HASH_KEY_STRING, makefun(&lua_ap_regex, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "usleep", APR_HASH_KEY_STRING, makefun(&lua_ap_usleep, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "base64_encode", APR_HASH_KEY_STRING, makefun(&lua_apr_b64encode, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "base64_decode", APR_HASH_KEY_STRING, makefun(&lua_apr_b64decode, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "md5", APR_HASH_KEY_STRING, makefun(&lua_apr_md5, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "sha1", APR_HASH_KEY_STRING, makefun(&lua_apr_sha1, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "htpassword", APR_HASH_KEY_STRING, makefun(&lua_apr_htpassword, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "touch", APR_HASH_KEY_STRING, makefun(&lua_apr_touch, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "mkdir", APR_HASH_KEY_STRING, makefun(&lua_apr_mkdir, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "mkrdir", APR_HASH_KEY_STRING, makefun(&lua_apr_mkrdir, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "rmdir", APR_HASH_KEY_STRING, makefun(&lua_apr_rmdir, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "date_parse_rfc", APR_HASH_KEY_STRING, makefun(&lua_apr_date_parse_rfc, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "escape", APR_HASH_KEY_STRING, makefun(&lua_ap_escape, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "unescape", APR_HASH_KEY_STRING, makefun(&lua_ap_unescape, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "mpm_query", APR_HASH_KEY_STRING, makefun(&lua_ap_mpm_query, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "expr", APR_HASH_KEY_STRING, makefun(&lua_ap_expr, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "scoreboard_process", APR_HASH_KEY_STRING, makefun(&lua_ap_scoreboard_process, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "scoreboard_worker", APR_HASH_KEY_STRING, makefun(&lua_ap_scoreboard_worker, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "clock", APR_HASH_KEY_STRING, makefun(&lua_ap_clock, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "requestbody", APR_HASH_KEY_STRING, makefun(&lua_ap_requestbody, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "add_input_filter", APR_HASH_KEY_STRING, makefun(&lua_ap_add_input_filter, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "module_info", APR_HASH_KEY_STRING, makefun(&lua_ap_module_info, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "loaded_modules", APR_HASH_KEY_STRING, makefun(&lua_ap_loaded_modules, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "runtime_dir_relative", APR_HASH_KEY_STRING, makefun(&lua_ap_runtime_dir_relative, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "server_info", APR_HASH_KEY_STRING, makefun(&lua_ap_server_info, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "set_document_root", APR_HASH_KEY_STRING, makefun(&lua_ap_set_document_root, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "set_context_info", APR_HASH_KEY_STRING, makefun(&lua_ap_set_context_info, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "os_escape_path", APR_HASH_KEY_STRING, makefun(&lua_ap_os_escape_path, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "escape_logitem", APR_HASH_KEY_STRING, makefun(&lua_ap_escape_logitem, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "strcmp_match", APR_HASH_KEY_STRING, makefun(&lua_ap_strcmp_match, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "set_keepalive", APR_HASH_KEY_STRING, makefun(&lua_ap_set_keepalive, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "make_etag", APR_HASH_KEY_STRING, makefun(&lua_ap_make_etag, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "send_interim_response", APR_HASH_KEY_STRING, makefun(&lua_ap_send_interim_response, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "custom_response", APR_HASH_KEY_STRING, makefun(&lua_ap_custom_response, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "exists_config_define", APR_HASH_KEY_STRING, makefun(&lua_ap_exists_config_define, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "state_query", APR_HASH_KEY_STRING, makefun(&lua_ap_state_query, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "get_server_name_for_url", APR_HASH_KEY_STRING, makefun(&lua_ap_get_server_name_for_url, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "ivm_get", APR_HASH_KEY_STRING, makefun(&lua_ivm_get, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "ivm_set", APR_HASH_KEY_STRING, makefun(&lua_ivm_set, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "getcookie", APR_HASH_KEY_STRING, makefun(&lua_get_cookie, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "setcookie", APR_HASH_KEY_STRING, makefun(&lua_set_cookie, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wsupgrade", APR_HASH_KEY_STRING, makefun(&lua_websocket_greet, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wsread", APR_HASH_KEY_STRING, makefun(&lua_websocket_read, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wspeek", APR_HASH_KEY_STRING, makefun(&lua_websocket_peek, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wswrite", APR_HASH_KEY_STRING, makefun(&lua_websocket_write, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wsclose", APR_HASH_KEY_STRING, makefun(&lua_websocket_close, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "wsping", APR_HASH_KEY_STRING, makefun(&lua_websocket_ping, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "config", APR_HASH_KEY_STRING, makefun(&lua_ap_get_config, APL_REQ_FUNTYPE_LUACFUN, p)); apr_hash_set(dispatch, "activeconfig", APR_HASH_KEY_STRING, makefun(&lua_ap_get_active_config, APL_REQ_FUNTYPE_LUACFUN, p)); lua_pushlightuserdata(L, dispatch); lua_setfield(L, LUA_REGISTRYINDEX, "Apache2.Request.dispatch"); luaL_newmetatable(L, "Apache2.Request"); /* [metatable] */ lua_pushvalue(L, -1); lua_setfield(L, -2, "__index"); luaL_setfuncs_compat(L, request_methods); /* [metatable] */ lua_pop(L, 2); luaL_newmetatable(L, "Apache2.Connection"); /* [metatable] */ lua_pushvalue(L, -1); lua_setfield(L, -2, "__index"); luaL_setfuncs_compat(L, connection_methods); /* [metatable] */ lua_pop(L, 2); luaL_newmetatable(L, "Apache2.Server"); /* [metatable] */ lua_pushvalue(L, -1); lua_setfield(L, -2, "__index"); luaL_setfuncs_compat(L, server_methods); /* [metatable] */ lua_pop(L, 2); } void ap_lua_push_connection(lua_State *L, conn_rec *c) { req_table_t* t; lua_boxpointer(L, c); luaL_getmetatable(L, "Apache2.Connection"); lua_setmetatable(L, -2); luaL_getmetatable(L, "Apache2.Connection"); t = apr_pcalloc(c->pool, sizeof(req_table_t)); t->t = c->notes; t->r = NULL; t->n = "notes"; ap_lua_push_apr_table(L, t); lua_setfield(L, -2, "notes"); lua_pushstring(L, c->client_ip); lua_setfield(L, -2, "client_ip"); lua_pop(L, 1); } void ap_lua_push_server(lua_State *L, server_rec *s) { lua_boxpointer(L, s); luaL_getmetatable(L, "Apache2.Server"); lua_setmetatable(L, -2); luaL_getmetatable(L, "Apache2.Server"); lua_pushstring(L, s->server_hostname); lua_setfield(L, -2, "server_hostname"); lua_pop(L, 1); } void ap_lua_push_request(lua_State *L, request_rec *r) { lua_boxpointer(L, r); luaL_getmetatable(L, "Apache2.Request"); lua_setmetatable(L, -2); }