mirror of
https://github.com/apache/httpd.git
synced 2025-08-10 02:02:49 +03:00
c16fe2875d
Note that this isn't a complete transformation yet, but it should basically compile and load as mod_lua. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@728494 13f79535-47bb-0310-9956-ffa450edef68
561 lines
20 KiB
C
561 lines
20 KiB
C
/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mod_lua.h"
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#include "util_script.h"
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#include "apr_lua.h"
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typedef char* (*req_field_string_f) (request_rec* r);
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typedef int (*req_field_int_f) (request_rec* r);
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void rstack_dump(lua_State* L, request_rec* r, const char* msg) {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "Lua Stack Dump: [%s]", msg);
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int i;
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int top = lua_gettop(L);
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for (i = 1; i<= top; i++) {
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int t = lua_type(L, i);
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switch(t) {
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case LUA_TSTRING: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: '%s'", i, lua_tostring(L, i));
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break;
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}
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case LUA_TUSERDATA: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%d: userdata", i);
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break;
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}
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case LUA_TLIGHTUSERDATA: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%d: lightuserdata", i);
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break;
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}
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case LUA_TNIL: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: NIL", i);
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break;
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}
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case LUA_TNONE: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: None", i);
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break;
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}
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case LUA_TBOOLEAN: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: %s", i, lua_toboolean(L, i) ? "true" : "false");
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break;
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}
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case LUA_TNUMBER: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: %g", i, lua_tonumber(L, i));
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break;
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}
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case LUA_TTABLE: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: <table>", i);
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break;
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}
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case LUA_TFUNCTION: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: <function>", i);
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break;
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}
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default: {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"%d: unkown: -[%s]-", i, lua_typename(L, i));
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break;
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}
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}
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}
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}
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/**
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* Verify that the thing at index is a request_rec wrapping
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* userdata thingamajig and return it if it is. if it is not
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* lua will enter its error handling routine.
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*/
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static request_rec* apw_check_request_rec(lua_State* L, int index) {
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luaL_checkudata(L, index, "Apache2.Request");
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request_rec* r = (request_rec*)lua_unboxpointer(L, index);
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return r;
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}
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/* ------------------ request methods -------------------- */
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/* helper callback for req_parseargs */
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static int req_aprtable2luatable_cb(void *l, const char *key, const char *value) {
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lua_State* L = (lua_State*)l; /* [table<s,t>, table<s,s>] */
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/* rstack_dump(L, RRR, "start of cb"); */
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/* L is [table<s,t>, table<s,s>] */
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/* build complex */
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lua_getfield(L, -1, key); /* [VALUE, table<s,t>, table<s,s>] */
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/* rstack_dump(L, RRR, "after getfield"); */
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int t = lua_type(L, -1);
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switch(t) {
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case LUA_TNIL:
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case LUA_TNONE: {
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lua_pop(L, 1); /* [table<s,t>, table<s,s>] */
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lua_newtable(L); /* [array, table<s,t>, table<s,s>] */
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lua_pushnumber(L, 1); /* [1, array, table<s,t>, table<s,s>] */
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lua_pushstring(L, value); /* [string, 1, array, table<s,t>, table<s,s>] */
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lua_settable(L, -3); /* [array, table<s,t>, table<s,s>] */
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lua_setfield(L, -2, key); /* [table<s,t>, table<s,s>] */
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break;
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}
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case LUA_TTABLE: {
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/* [array, table<s,t>, table<s,s>] */
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int size = lua_objlen(L, -1);
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lua_pushnumber(L, size + 1); /* [#, array, table<s,t>, table<s,s>] */
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lua_pushstring(L, value); /* [string, #, array, table<s,t>, table<s,s>] */
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lua_settable(L, -3); /* [array, table<s,t>, table<s,s>] */
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lua_setfield(L, -2, key); /* [table<s,t>, table<s,s>] */
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break;
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}
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}
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/* L is [table<s,t>, table<s,s>] */
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/* build simple */
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lua_getfield(L, -2, key); /* [VALUE, table<s,s>, table<s,t>] */
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if (lua_isnoneornil(L, -1)) { /* only set if not already set */
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lua_pop(L, 1); /* [table<s,s>, table<s,t>]] */
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lua_pushstring(L, value); /* [string, table<s,s>, table<s,t>] */
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lua_setfield(L, -3, key); /* [table<s,s>, table<s,t>] */
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} else { lua_pop(L, 1); }
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return 1;
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}
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/* r:parseargs() returning a lua table */
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static int req_parseargs(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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lua_newtable(L);
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lua_newtable(L); /* [table, table] */
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apr_table_t* form_table;
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ap_args_to_table(r, &form_table);
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apr_table_do(req_aprtable2luatable_cb, L, form_table, NULL);
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return 2; /* [table<string, string>, table<string, array<string>>] */
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}
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/* wrap ap_rputs as r:puts(String) */
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static int req_puts(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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int argc = lua_gettop(L);
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int i;
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for (i=2;i<=argc;i++) {
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ap_rputs(luaL_checkstring(L, i), r);
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}
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return 0;
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}
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/* wrap ap_rwrite as r:write(String) */
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static int req_write(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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size_t n;
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const char* buf = luaL_checklstring(L, 2, &n);
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ap_rwrite((void *)buf, n, r);
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return 0;
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}
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/* r:parsebody() */
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static int req_parsebody(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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lua_newtable(L);
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lua_newtable(L);
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apr_table_t* form_table;
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if (ap_body_to_table(r, &form_table) == APR_SUCCESS) {
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apr_table_do(req_aprtable2luatable_cb, L, form_table, NULL);
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}
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return 2;
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}
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/* r:addoutputfilter(name|function) */
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static int req_add_output_filter(lua_State *L) {
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request_rec* r = apw_check_request_rec(L, 1);
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const char *name = luaL_checkstring(L, 2);
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "adding output filter %s", name);
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ap_add_output_filter(name, L, r, r->connection);
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return 0;
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}
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static int req_document_root(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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char* doc_root = apr_pstrdup(r->pool, ap_document_root(r));
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lua_pushstring(L, doc_root);
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return 1;
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}
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/* BEGIN dispatch mathods for request_rec fields */
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static char* req_uri_field(request_rec* r) {
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return r->uri;
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}
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static const char* req_method_field(request_rec* r) {
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return r->method;
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}
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static const char* req_hostname_field(request_rec* r) {
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return r->hostname;
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}
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static const char* req_args_field(request_rec* r) {
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return r->args;
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}
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static const char* req_path_info_field(request_rec* r) {
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return r->path_info;
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}
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static const char* req_canonical_filename_field(request_rec* r) {
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return r->canonical_filename;
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}
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static const char* req_filename_field(request_rec* r) {
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return r->filename;
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}
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static const char* req_user_field(request_rec* r) {
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return r->user;
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}
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static const char* req_unparsed_uri_field(request_rec* r) {
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return r->unparsed_uri;
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}
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static const char* req_ap_auth_type_field(request_rec* r) {
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return r->ap_auth_type;
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}
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static const char* req_content_encoding_field(request_rec* r) {
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return r->content_encoding;
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}
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static const char* req_content_type_field(request_rec* r) {
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return r->content_type;
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}
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static const char* req_range_field(request_rec* r) {
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return r->range;
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}
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static const char* req_protocol_field(request_rec* r) {
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return r->protocol;
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}
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static const char* req_the_request_field(request_rec* r) {
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return r->the_request;
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}
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static int req_status_field(request_rec* r) {
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return r->status;
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}
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static int req_assbackwards_field(request_rec* r) {
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return r->assbackwards;
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}
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/* END dispatch mathods for request_rec fields */
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static int req_dispatch(lua_State* L) {
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request_rec* r = apw_check_request_rec(L, 1);
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const char *name = luaL_checkstring(L, 2);
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lua_pop(L, 2);
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lua_getfield(L, LUA_REGISTRYINDEX, "Apache2.Request.dispatch");
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apr_hash_t* dispatch = lua_touserdata(L, 1);
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lua_pop(L, 1);
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req_fun_t* rft = apr_hash_get(dispatch, name, APR_HASH_KEY_STRING);
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if (rft) {
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switch(rft->type) {
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case APW_REQ_FUNTYPE_TABLE: {
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"request_rec->dispatching %s -> apr table (NOT IMPLEMENTED YET)", name);
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return 0;
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}
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case APW_REQ_FUNTYPE_LUACFUN: {
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"request_rec->dispatching %s -> lua_CFunction", name);
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lua_CFunction func = rft->fun;
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lua_pushcfunction(L, func);
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return 1;
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}
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case APW_REQ_FUNTYPE_STRING: {
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"request_rec->dispatching %s -> string", name);
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req_field_string_f func = rft->fun;
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char* rs = (*func)(r);
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lua_pushstring(L, rs);
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return 1;
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}
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case APW_REQ_FUNTYPE_INT: {
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"request_rec->dispatching %s -> int", name);
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req_field_int_f func = rft->fun;
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int rs = (*func)(r);
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lua_pushnumber(L, rs);
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return 1;
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}
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case APW_REQ_FUNTYPE_BOOLEAN: {
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"request_rec->dispatching %s -> boolean", name);
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req_field_int_f func = rft->fun;
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int rs = (*func)(r);
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lua_pushboolean(L, rs);
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return 1;
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}
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}
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}
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ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
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"nothing for %s", name);
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return 0;
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}
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/* helper function for the logging functions below */
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static int req_log_at(lua_State* L, int level) {
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request_rec* r = apw_check_request_rec(L, 1);
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lua_Debug dbg;
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lua_getstack(L, 1, &dbg);
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lua_getinfo(L, "Sl", &dbg);
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const char* msg = luaL_checkstring(L, 2);
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ap_log_rerror(dbg.source, dbg.currentline, level, 0, r, msg);
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return 0;
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}
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/* r:debug(String) and friends which use apache logging */
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static int req_emerg(lua_State* L) { req_log_at(L, APLOG_EMERG); return 0; }
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static int req_alert(lua_State* L) { req_log_at(L, APLOG_ALERT); return 0; }
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static int req_crit(lua_State* L) { req_log_at(L, APLOG_CRIT); return 0; }
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static int req_err(lua_State* L) { req_log_at(L, APLOG_ERR); return 0; }
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static int req_warn(lua_State* L) { req_log_at(L, APLOG_WARNING); return 0; }
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static int req_notice(lua_State* L) { req_log_at(L, APLOG_NOTICE); return 0; }
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static int req_info(lua_State* L) { req_log_at(L, APLOG_INFO); return 0; }
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static int req_debug(lua_State* L) { req_log_at(L, APLOG_DEBUG); return 0; }
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/* handle r.status = 201 */
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static int req_newindex(lua_State* L) {
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/* request_rec* r = lua_touserdata(L, lua_upvalueindex(1)); */
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/* const char* key = luaL_checkstring(L, -2); */
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request_rec* r = apw_check_request_rec(L, 1);
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rstack_dump(L, r, "req_newindex");
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const char *key = luaL_checkstring(L, 2);
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rstack_dump(L, r, "req_newindex");
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if (0 == apr_strnatcmp("status", key)) {
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int code = luaL_checkinteger(L, 3);
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r->status = code;
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luaL_getmetatable(L, "Apache2.Request");
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lua_pushinteger(L, code);
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lua_setfield(L, -2, "status");
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lua_pop(L, 1);
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return 0;
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}
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if (0 == apr_strnatcmp("content_type", key)) {
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const char* value = luaL_checkstring(L, 3);
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r->content_type = apr_pstrdup(r->pool, value);
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luaL_getmetatable(L, "Apache2.Request");
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lua_pushstring(L, value);
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lua_setfield(L, -2, "content_type");
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lua_pop(L, 1);
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return 0;
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}
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if (0 == apr_strnatcmp("filename", key)) {
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const char* value = luaL_checkstring(L, 3);
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r->filename = apr_pstrdup(r->pool, value);
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luaL_getmetatable(L, "Apache2.Request");
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lua_pushstring(L, value);
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lua_setfield(L, -2, "filename");
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lua_pop(L, 1);
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return 0;
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}
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if (0 == apr_strnatcmp("uri", key)) {
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const char* value = luaL_checkstring(L, 3);
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r->uri = apr_pstrdup(r->pool, value);
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luaL_getmetatable(L, "Apache2.Request");
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lua_pushstring(L, value);
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lua_setfield(L, -2, "uri");
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lua_pop(L, 1);
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return 0;
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}
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lua_pushstring(L, apr_psprintf(r->pool, "Property [%s] may not be set on a request_rec", key));
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lua_error(L);
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return 0;
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}
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static const struct luaL_Reg request_methods[] = {
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{"__index", req_dispatch},
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{"__newindex", req_newindex},
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/* {"__newindex", req_set_field}, */
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{NULL, NULL}
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};
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static const struct luaL_Reg connection_methods[] = {
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{NULL, NULL}
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};
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static const struct luaL_Reg server_methods[] = {
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{NULL, NULL}
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};
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static req_fun_t* makefun(void* fun, int type, apr_pool_t* pool) {
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req_fun_t* rft = apr_palloc(pool, sizeof(req_fun_t));
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rft->fun = fun;
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rft->type = type;
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return rft;
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}
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void apw_load_request_lmodule(lua_State *L, apr_pool_t *p) {
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apr_hash_t* dispatch = apr_hash_make(p);
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apr_hash_set(dispatch, "puts", APR_HASH_KEY_STRING,
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makefun(&req_puts, APW_REQ_FUNTYPE_LUACFUN, p));
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apr_hash_set(dispatch, "write", APR_HASH_KEY_STRING,
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makefun(&req_write, APW_REQ_FUNTYPE_LUACFUN, p));
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apr_hash_set(dispatch, "document_root", APR_HASH_KEY_STRING,
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makefun(&req_document_root, APW_REQ_FUNTYPE_LUACFUN, p));
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apr_hash_set(dispatch, "parseargs", APR_HASH_KEY_STRING,
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makefun(&req_parseargs, APW_REQ_FUNTYPE_LUACFUN, p));
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apr_hash_set(dispatch, "parsebody", APR_HASH_KEY_STRING,
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makefun(&req_parsebody, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "debug", APR_HASH_KEY_STRING,
|
|
makefun(&req_debug, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "info", APR_HASH_KEY_STRING,
|
|
makefun(&req_info, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "notice", APR_HASH_KEY_STRING,
|
|
makefun(&req_notice, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "warn", APR_HASH_KEY_STRING,
|
|
makefun(req_warn, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "err", APR_HASH_KEY_STRING,
|
|
makefun(&req_err, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "crit", APR_HASH_KEY_STRING,
|
|
makefun(&req_crit, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "alert", APR_HASH_KEY_STRING,
|
|
makefun(&req_alert, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "emerg", APR_HASH_KEY_STRING,
|
|
makefun(&req_emerg, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "add_output_filter", APR_HASH_KEY_STRING,
|
|
makefun(&req_add_output_filter, APW_REQ_FUNTYPE_LUACFUN, p));
|
|
apr_hash_set(dispatch, "assbackwards", APR_HASH_KEY_STRING,
|
|
makefun(&req_assbackwards_field, APW_REQ_FUNTYPE_BOOLEAN, p));
|
|
apr_hash_set(dispatch, "status", APR_HASH_KEY_STRING,
|
|
makefun(&req_status_field, APW_REQ_FUNTYPE_INT, p));
|
|
apr_hash_set(dispatch, "protocol", APR_HASH_KEY_STRING,
|
|
makefun(&req_protocol_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "range", APR_HASH_KEY_STRING,
|
|
makefun(&req_range_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "content_type", APR_HASH_KEY_STRING,
|
|
makefun(&req_content_type_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "content_encoding", APR_HASH_KEY_STRING,
|
|
makefun(&req_content_encoding_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "ap_auth_type", APR_HASH_KEY_STRING,
|
|
makefun(&req_ap_auth_type_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "unparsed_uri", APR_HASH_KEY_STRING,
|
|
makefun(&req_unparsed_uri_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "user", APR_HASH_KEY_STRING,
|
|
makefun(&req_user_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "filename", APR_HASH_KEY_STRING,
|
|
makefun(&req_filename_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "canonical_filename", APR_HASH_KEY_STRING,
|
|
makefun(&req_canonical_filename_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "path_info", APR_HASH_KEY_STRING,
|
|
makefun(&req_path_info_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "args", APR_HASH_KEY_STRING,
|
|
makefun(&req_args_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "hostname", APR_HASH_KEY_STRING,
|
|
makefun(&req_hostname_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "uri", APR_HASH_KEY_STRING,
|
|
makefun(&req_uri_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "the_request", APR_HASH_KEY_STRING,
|
|
makefun(&req_the_request_field, APW_REQ_FUNTYPE_STRING, p));
|
|
apr_hash_set(dispatch, "method", APR_HASH_KEY_STRING,
|
|
makefun(&req_method_field, APW_REQ_FUNTYPE_STRING, 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_register(L, NULL, request_methods); /* [metatable] */
|
|
|
|
lua_pop(L, 2);
|
|
|
|
luaL_newmetatable(L, "Apache2.Connection"); /* [metatable] */
|
|
lua_pushvalue(L, -1);
|
|
|
|
lua_setfield(L, -2, "__index");
|
|
luaL_register(L, NULL, connection_methods); /* [metatable] */
|
|
|
|
lua_pop(L, 2);
|
|
|
|
luaL_newmetatable(L, "Apache2.Server"); /* [metatable] */
|
|
lua_pushvalue(L, -1);
|
|
|
|
lua_setfield(L, -2, "__index");
|
|
luaL_register(L, NULL, server_methods); /* [metatable] */
|
|
|
|
lua_pop(L, 2);
|
|
|
|
}
|
|
|
|
void apw_push_connection(lua_State* L, conn_rec* c) {
|
|
lua_boxpointer(L, c);
|
|
luaL_getmetatable(L, "Apache2.Connection");
|
|
lua_setmetatable(L, -2);
|
|
luaL_getmetatable(L, "Apache2.Connection");
|
|
|
|
apw_push_apr_table(L, "notes", c->notes);
|
|
|
|
lua_pushstring(L, c->remote_ip);
|
|
lua_setfield(L, -2, "remote_ip");
|
|
|
|
lua_pop(L, 1);
|
|
}
|
|
|
|
|
|
void apw_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 apw_push_request(lua_State* L, request_rec* r) {
|
|
lua_boxpointer(L, r);
|
|
luaL_getmetatable(L, "Apache2.Request");
|
|
lua_setmetatable(L, -2);
|
|
}
|
|
|