474 lines
15 KiB
C++
474 lines
15 KiB
C++
#include "adapter.h"
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//TODO:
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//每个函数都要判断返回值 done
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// lua错误处理，比如函数没有注册，resume的返回值判断然后打印错误, 不再resume该协程 done
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//压栈之前要check_stack done
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//流结束clear_ctx之外还要释放该协程，自动垃圾回收？做实验验证一下 done
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//destroy，释放lua_state done
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//多线程 m * n个虚拟机
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//dumpfile改成在线试一下
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//错误处理，日志, 工程化，日志完备
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static void* g_logger = NULL;
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static std::vector<std::vector<lua_plug>> g_lua_plugs(LUA_ENTRY_TYPE_NUM, std::vector<lua_plug>());
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static void lua_traceback(const char *func_name, lua_State *lua_state, int ret){
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int n = lua_gettop(lua_state);
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printf("%s error: ret is %d, traceback is:\n", func_name, ret);
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for(int i = -1; i >= 0 - n; i--){
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std::string type = std::string(lua_typename(lua_state, lua_type(lua_state, i)));
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if(type == "string"){
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printf("%s\n", lua_tostring(lua_state, i));
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}
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}
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lua_pop(lua_state, n);
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}
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std::string _inet_ntoa(uint32_t ip)
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{
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const char *_ip = inet_ntoa(*(struct in_addr *)&ip);
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return std::string(_ip);
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}
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//copy from suricata
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static int lua_push_string_buffer(lua_State *lua_state, const char *input, size_t input_len)
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{
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if (input_len % 4 != 0) {
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/* we're using a buffer sized at a multiple of 4 as lua_pushlstring generates
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* invalid read errors in valgrind otherwise. Adding in a nul to be sure.
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* Buffer size = len + 1 (for nul) + whatever makes it a multiple of 4 */
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size_t buflen = input_len + 1 + ((input_len + 1) % 4);
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char buf[buflen];
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memset(buf, 0x00, buflen);
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memcpy(buf, input, input_len);
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buf[input_len] = '\0';
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/* return value through lua_state, as a luastring */
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lua_pushlstring(lua_state, buf, input_len);
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} else {
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lua_pushlstring(lua_state, input, input_len);
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}
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return 1;
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}
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static int get_stream_tuple5(lua_State *lua_state){
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lua_getglobal(lua_state, "cur_http_sess_ctx");
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http_sess_ctx *sess_ctx = (http_sess_ctx *)lua_touserdata(lua_state, -1);
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lua_pop(lua_state, 1);
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if(sess_ctx == NULL){
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//do log
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std::cout<<"sess_ctx is null"<<std::endl;
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return -1;
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}
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stream_tuple5& tuple5 = sess_ctx->tuple5;
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if(tuple5.parse_done == true){
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lua_newtable(lua_state);
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lua_push_string_buffer(lua_state, "ip_version", std::string("ip_version").length());
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lua_push_string_buffer(lua_state, tuple5.ip_version.c_str(), tuple5.ip_version.length());
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "stream_type", std::string("stream_type").length());
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lua_push_string_buffer(lua_state, tuple5.stream_type.c_str(), tuple5.stream_type.length());
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "sip", std::string("sip").length());
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lua_push_string_buffer(lua_state, tuple5.sip.c_str(), tuple5.sip.length());
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "dip", std::string("dip").length());
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lua_push_string_buffer(lua_state, tuple5.dip.c_str(), tuple5.dip.length());
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "sport", std::string("sport").length());
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lua_pushinteger(lua_state, tuple5.sport);
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "dport", std::string("dport").length());
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lua_pushinteger(lua_state, tuple5.dport);
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lua_settable(lua_state, -3);
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return 0;
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}
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return -1;
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}
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static int _get_stream_info(lua_State *lua_state, int status, lua_KContext yieldk_ctx){
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int ret = get_stream_tuple5(lua_state);
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if(ret < 0){
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lua_yieldk(lua_state, 0, 0, _get_stream_info);
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}
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return 1;
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}
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static int get_stream_info(lua_State* lua_state){
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//printf("call get_strem_info\n");
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return _get_stream_info(lua_state, 0, 0);
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}
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static int get_http_header(lua_State *lua_state, int type){
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lua_getglobal(lua_state, "cur_http_sess_ctx");
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http_sess_ctx *sess_ctx = (http_sess_ctx *)lua_touserdata(lua_state, -1);
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lua_pop(lua_state, 1);
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if(sess_ctx == NULL){
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//do log
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std::cout<<"sess_ctx is null"<<std::endl;
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return -1;
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}
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std::unordered_set<std::string> required_regions;
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lua_pushnil(lua_state);
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while(lua_next(lua_state, -2) != 0){
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required_regions.insert(std::string(lua_tostring(lua_state, -1)));
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lua_pop(lua_state, 1);
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}
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http_header& header = (type == HTTP_TYPE_REQUEST ? sess_ctx->req_header : sess_ctx->resp_header);
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if(header.parse_done == true){
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//printf("header parse done\n");
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lua_newtable(lua_state);
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for(auto region : header.std_regions){
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if(required_regions.find("ALL") != required_regions.end() || required_regions.find(region.first) != required_regions.end()){
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lua_push_string_buffer(lua_state, region.first.c_str(), region.first.length());
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lua_push_string_buffer(lua_state, region.second.c_str(), region.second.length());
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lua_settable(lua_state, -3);
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}
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}
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if(!header.other_regions.empty()){
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if(required_regions.find("ALL") != required_regions.end() || required_regions.find("HTTP_OTHER_REGIONS") != required_regions.end()){
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lua_push_string_buffer(lua_state, "HTTP_OTHER_REGIONS", std::string("HTTP_OTHER_REGIONS").length());
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lua_newtable(lua_state);
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int i = 1;
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for(auto region : header.other_regions){
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lua_push_string_buffer(lua_state, region.c_str(), region.length());
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lua_rawseti(lua_state, -2, i++);
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}
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lua_settable(lua_state, -3);
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}
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}
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return 0;
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}
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return -1;
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}
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static int _get_http_request_header(lua_State *lua_state, int status, lua_KContext yieldk_ctx){
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//printf("call get_http_request_header\n");
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int ret = get_http_header(lua_state, HTTP_TYPE_REQUEST);
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if(ret < 0){
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lua_yieldk(lua_state, 0, 0, _get_http_request_header);
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}
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return 1;
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}
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static int get_http_request_header(lua_State* lua_state){
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return _get_http_request_header(lua_state, 0, 0);
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}
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static int _get_http_response_header(lua_State *lua_state, int status, lua_KContext yieldk_ctx){
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int ret = get_http_header(lua_state, HTTP_TYPE_RESPONSE);
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if(ret < 0){
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lua_yieldk(lua_state, 0, 0, _get_http_response_header);
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}
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return 1;
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}
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static int get_http_response_header(lua_State* lua_state){
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return _get_http_response_header(lua_state, 0, 0);
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}
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static int get_http_body(lua_State *lua_state, int type){
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//printf("call _get_http_response_body\n");
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lua_getglobal(lua_state, "cur_http_sess_ctx");
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http_sess_ctx *sess_ctx = (http_sess_ctx *)lua_touserdata(lua_state, -1);
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lua_pop(lua_state, 1);
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if(sess_ctx == NULL){
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//do log
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std::cout<<"sess_ctx is null"<<std::endl;
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return -1;
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}
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http_body& body = (type == HTTP_TYPE_REQUEST? sess_ctx->req_body : sess_ctx->resp_body);
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if(body.data_end == true || body.buf != nullptr){
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lua_newtable(lua_state);
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lua_push_string_buffer(lua_state, "block_id", std::string("block_id").length());
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lua_pushinteger(lua_state, body.block_id);
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "data_end", std::string("data_end").length());
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lua_pushboolean(lua_state, body.data_end);
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "buf", std::string("buf").length());
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lua_pushlightuserdata(lua_state, body.buf);
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lua_settable(lua_state, -3);
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lua_push_string_buffer(lua_state, "buflen", std::string("buflen").length());
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lua_pushinteger(lua_state, body.buflen);
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lua_settable(lua_state, -3);
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body.buf = nullptr;
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body.buflen = 0;
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return 0;
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}
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return -1;
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}
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static int _get_http_request_body(lua_State *lua_state, int status, lua_KContext yieldk_ctx){
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int ret = get_http_body(lua_state, HTTP_TYPE_REQUEST);
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if(ret < 0){
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lua_yieldk(lua_state, 0, 0, _get_http_request_body);
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}
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return 1;
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}
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static int get_http_request_body(lua_State* lua_state){
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return _get_http_request_body(lua_state, 0, 0);
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}
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static int _get_http_response_body(lua_State *lua_state, int status, lua_KContext yieldk_ctx){
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int ret = get_http_body(lua_state, HTTP_TYPE_RESPONSE);
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if(ret < 0){
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lua_yieldk(lua_state, 0, 0, _get_http_response_body);
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}
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return 1;
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}
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static int get_http_response_body(lua_State* lua_state){
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return _get_http_response_body(lua_state, 0, 0);
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}
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static int load_lua_plug(const char *profile){
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std::unordered_map<std::string, int> type_map = {
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{"ip", LUA_ENTRY_TYPE_IP},
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{"tcp", LUA_ENTRY_TYPE_TCP},
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{"udp", LUA_ENTRY_TYPE_UDP},
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{"http", LUA_ENTRY_TYPE_HTTP},
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{"tls", LUA_ENTRY_TYPE_TLS},
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{"dns", LUA_ENTRY_TYPE_DNS},
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{"mail", LUA_ENTRY_TYPE_MAIL},
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{"ftp", LUA_ENTRY_TYPE_FTP}
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};
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const char *section = "main";
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char file_path[LUA_SAPP_PATH_MAX] = "";
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char entry_type[LUA_SAPP_SYMBOL_MAX] = "";
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MESA_load_profile_string_def(profile, section, "file_path", file_path, sizeof(file_path), "");
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MESA_load_profile_string_def(profile, section, "entry_type", entry_type, sizeof(entry_type), "http");
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lua_State *lua_state = luaL_newstate();
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if(lua_state == NULL){
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printf("failed to LuaL_newstate\n");
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return -1;
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}
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luaL_openlibs(lua_state);
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int ret = luaL_dofile(lua_state, file_path);
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if(ret){
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//log error
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printf("error: ret is %d, file_path is %s\n", ret, file_path);
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return -1;
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}
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//TODO: what if not register, rusume handle error
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lua_register(lua_state, "get_stream_info", get_stream_info);
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lua_register(lua_state, "get_http_request_header", get_http_request_header);
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lua_register(lua_state, "get_http_response_header", get_http_response_header);
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lua_register(lua_state, "get_http_request_body", get_http_request_body);
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lua_register(lua_state, "get_http_response_body", get_http_response_body);
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lua_plug plug;
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plug.file_path = std::string(file_path);
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plug.entry_type = (enum lua_entry_type)type_map[std::string(entry_type)];
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plug.lua_state = lua_state;
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g_lua_plugs[plug.entry_type].push_back(plug);
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return 0;
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}
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static int process_lua_plug_conflist(const char* filename)
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{
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char lua_plug_conf_path[LUA_SAPP_PATH_MAX] = {0};
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FILE* fp = fopen(filename, "r");
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if(fp == NULL){
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MESA_handle_runtime_log(g_logger, RLOG_LV_FATAL, LOG_MODULE_NAME, "process_conflist() fopen %s error!\n", filename);
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return -1;
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}
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while(feof(fp) == 0){
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if((fgets(lua_plug_conf_path, LUA_SAPP_PATH_MAX, fp)) == NULL){
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fclose(fp);
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fp=NULL;
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return 0;
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}
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if(lua_plug_conf_path[0]=='#'){
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continue;
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}
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int len = strnlen(lua_plug_conf_path, LUA_SAPP_PATH_MAX);
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lua_plug_conf_path[len - 1] = '\0';
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int ret = load_lua_plug(lua_plug_conf_path);
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if(ret < 0){
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printf("failed to load_lua_plug: conf_path is %s\n", lua_plug_conf_path);
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}
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}
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fclose(fp);
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fp=NULL;
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return 0;
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}
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static http_sess_ctx* init_http_sess_ctx(){
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http_sess_ctx *ctx = new http_sess_ctx();
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for(lua_plug plug : g_lua_plugs[LUA_ENTRY_TYPE_HTTP]){
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lua_State* lua_state = plug.lua_state;
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lua_State* coroutine = lua_newthread(lua_state);
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int ret = lua_checkstack(lua_state, 1);
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if(ret != 1){
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//do log
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printf("do not have enough space, ret is %d\n", ret);
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break;
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}
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ctx->coroutines.push_back(coroutine);
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}
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return ctx;
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}
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static void clear_http_sess_ctx(http_sess_ctx *ctx){
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delete ctx;
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ctx = NULL;
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}
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std::string utils_inet_ntoa(uint32_t ip)
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{
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const char *_ip = inet_ntoa(*(struct in_addr *)&ip);
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return std::string(_ip);
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}
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uchar NEW_HTTP_SERVICE_ENTRY(stSessionInfo* session_info, void **param, int thread_seq, struct streaminfo *a_tcp, void *a_packet){
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uchar ret = PROT_STATE_GIVEME;
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http_sess_ctx *ctx = (http_sess_ctx*)*param;
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http_infor *a_http = (http_infor *)(session_info->app_info);
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bool stream_begin = false;
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if(session_info == nullptr){
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return PROT_STATE_DROPME;
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}
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if(ctx == nullptr){
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ctx = init_http_sess_ctx();
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*param = ctx;
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stream_begin = true;
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}
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if(ctx->tuple5.parse_done == false){
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struct stream_tuple4_v4 *tuple4_v4 = a_tcp->addr.tuple4_v4;
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ctx->tuple5.ip_version = "IPV4";
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if(a_tcp->type == STREAM_TYPE_TCP){
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ctx->tuple5.stream_type = "TCP";
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}
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if(a_tcp->type == STREAM_TYPE_UDP){
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ctx->tuple5.stream_type = "UDP";
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}
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ctx->tuple5.sip = utils_inet_ntoa(tuple4_v4->saddr);
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ctx->tuple5.dip = utils_inet_ntoa(tuple4_v4->daddr);
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ctx->tuple5.sport = ntohs(tuple4_v4->source);
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ctx->tuple5.dport = ntohs(tuple4_v4->dest);
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ctx->tuple5.parse_done = true;
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}
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uchar curdir = a_http->curdir;
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switch(session_info->prot_flag)
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{
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case HTTP_STATE:
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case HTTP_CONTENT:
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break;
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case HTTP_UNGZIP_CONTENT:
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if(curdir == DIR_C2S){
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ctx->req_body.block_id++;
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ctx->req_body.buf = session_info->buf;
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ctx->req_body.buflen = session_info->buflen;
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}
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if(curdir == DIR_S2C){
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ctx->resp_body.block_id++;
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ctx->resp_body.buf = session_info->buf;
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ctx->resp_body.buflen = session_info->buflen;
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}
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break;
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default:
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std::string key(http_proto_flag2region(session_info->prot_flag));
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std::string value((const char*)(session_info->buf), session_info->buflen);
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if(curdir == DIR_C2S){
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if(key == "HTTP_OTHER_REGIONS"){
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ctx->req_header.other_regions.insert(value);
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}
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else{
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ctx->req_header.std_regions.insert({key, value});
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}
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}
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else{
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if(key == "HTTP_OTHER_REGIONS"){
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ctx->resp_header.other_regions.insert(value);
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}
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else{
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ctx->resp_header.std_regions.insert({key, value});
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}
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}
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break;
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}
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uchar http_state = a_http->http_state;
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//printf("curdir is %d, http_state is %d\n", curdir, http_state);
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//header over
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if(http_state == HTTP_DATA_BEGIN){
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if(curdir == DIR_C2S){
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ctx->req_header.parse_done = true;
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}
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if(curdir == DIR_S2C){
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ctx->resp_header.parse_done = true;
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}
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}
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//data over
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if(http_state == HTTP_DATA_END){
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if(curdir == DIR_C2S){
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ctx->req_body.data_end = true;
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}
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if(curdir == DIR_S2C){
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ctx->resp_body.data_end = true;
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}
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}
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//resume coroutine
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for(lua_State*& coroutine : ctx->coroutines){
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if(coroutine == nullptr){
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continue;
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}
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/*
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int ret = lua_checkstack(coroutine, 1);
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if(ret != 1){
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//do log
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printf("do not have enough space, ret is %d\n", ret);
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continue;
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}
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*/
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lua_pushlightuserdata(coroutine, (void *)ctx);
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lua_setglobal(coroutine, "cur_http_sess_ctx");
|
||
if(stream_begin){
|
||
lua_getglobal(coroutine, "process");
|
||
}
|
||
ret = lua_resume(coroutine, NULL, 0);
|
||
if(ret == LUA_OK){
|
||
coroutine = nullptr;
|
||
continue;
|
||
}
|
||
if(ret != LUA_YIELD){
|
||
lua_traceback("lua_resume", coroutine, ret);
|
||
coroutine = nullptr;
|
||
}
|
||
}
|
||
if(session_info->session_state & SESSION_STATE_CLOSE){
|
||
//printf("close tcp stream\n");
|
||
clear_http_sess_ctx(ctx);
|
||
*param = NULL;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
int NEW_HTTP_SERVICE_INIT(void)
|
||
{
|
||
g_logger = MESA_create_runtime_log_handle("./log/http/http_service", 10);
|
||
if(g_logger == NULL){
|
||
printf("%s init : get log handle error!\n", HTTP_SERVICE_PLUGNAME);
|
||
return -1;
|
||
}
|
||
|
||
// get all business lua script which register http
|
||
const char *conflist_path = "./plug/lua/conflist_lua.inf";
|
||
if(g_lua_plugs[LUA_ENTRY_TYPE_HTTP].size() == 0){
|
||
process_lua_plug_conflist(conflist_path);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void NEW_HTTP_SERVICE_DESTROY(void)
|
||
{
|
||
for(auto plug : g_lua_plugs[LUA_ENTRY_TYPE_HTTP]){
|
||
lua_close(plug.lua_state);
|
||
}
|
||
return ;
|
||
}
|
||
|