![\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250425102523-680b63131d3ed.gif\")
<\/p>\n📢\u535a\u5ba2\u4e3b\u9875：https:\/\/blog.csdn.net\/2301_779549673 📢\u535a\u5ba2\u4ed3\u5e93：https:\/\/gitee.com\/JohnKingW\/linux_test\/tree\/master\/lesson 📢\u6b22\u8fce\u70b9\u8d5e 👍 \u6536\u85cf \u2b50\u7559\u8a00 📝 \u5982\u6709\u9519\u8bef\u656c\u8bf7\u6307\u6b63！ 📢\u672c\u6587\u7531 JohnKi \u539f\u521b，\u9996\u53d1\u4e8e CSDN🙉 📢\u672a\u6765\u5f88\u957f，\u503c\u5f97\u6211\u4eec\u5168\u529b\u5954\u8d74\u66f4\u7f8e\u597d\u7684\u751f\u6d3b\u2728<\/p>\n
<\/p>\n
![\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250425102523-680b6313411ee.gif\")
<\/p>\n<\/p>\n
\u5728\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d，\u7b14\u8005\u5e26\u5927\u5bb6\u5b9e\u73b0\u4e86TCP\u670d\u52a1\u5668\u7684 4\u79cd \u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u901a\u4fe1\u7684\u6a21\u5f0f<\/font> ，\u5206\u522b\u662f\u5355\u6267\u884c\u6d41\u6a21\u5f0f\u3001\u591a\u8fdb\u7a0b\u6a21\u5f0f\u3001\u591a\u7ebf\u7a0b\u6a21\u5f0f\u3001\u4ee5\u53ca\u7ebf\u7a0b\u6c60\u6a21\u5f0f<\/font><\/p>\n \u8fd9\u4e00\u7bc7，\u6211\u5c06\u5e26\u5927\u5bb6\u8fdb\u4e00\u6b65\u7406\u89e3TCP，\u5c31\u4ece\u7528TCP\u5b9e\u73b0\u7c7bXShell\u529f\u80fd\u670d\u52a1\u5668<\/font> ，\u91c7\u7528\u7684\u662f\u591a\u7ebf\u7a0b\u7248\u672c\u54e6<\/p>\n \u5176\u4ed6\u90e8\u5206\u4fdd\u6301\u4e0d\u53d8，\u6211\u4eec\u6dfb\u52a0\u4e00\u4e2a\u5904\u7406\u56de\u8c03\u51fd\u6570，\u7528\u6765\u5224\u65ad\u548c\u6267\u884c\u76f8\u5e94\u7684 xshell \u547d\u4ee4<\/p>\n using handler_t = std::function<std::string(int sockfd, InetAddr addr)>;<\/p>\n class TcpServer{ private: \u6211\u4eec\u4e4b\u524d\u4f7f\u7528 Server \u8fdb\u884c\u56de\u663e\u5904\u7406，\u8fd9\u91cc\u5c06 Execute \u51fd\u6570\u7684\u5904\u7406\u65b9\u6cd5\u4ece Server \u6539\u6210 _handler\u5c31\u884c\u4e86<\/font><\/p>\n \/\/ \u7ebf\u7a0b\u51fd\u6570 Command \u7c7b\u5b9e\u73b0\u7c7b\u4f3c\u4e8eXShell\u7684\u529f\u80fd，\u4f46\u662f\u9700\u8981\u6ce8\u610f\u8981\u8ba9\u6240\u6709\u547d\u4ee4\u90fd\u53ef\u4ee5\u6267\u884c，\u56e0\u4e3a\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5220\u5e93\u7b49\u76f8\u5173\u7684\u95ee\u9898\u3002<\/font>\u4e0d\u6210\u5458\u53d8\u91cf\u53ef\u4ee5\u4f7f\u7528set\u5bb9\u5668\u5b58\u50a8\u5141\u8bb8\u6267\u884c\u547d\u4ee4\u7684\u524d\u7f00！<\/font><\/p>\n class Command{ \u6839\u636e\u81ea\u5df1\u7684\u9700\u8981，\u5728\u6784\u9020\u51fd\u6570\u79cd\u5c06\u5141\u8bb8\u4f7f\u7528\u7684\u547d\u4ee4\u63d2\u5165\u5230\u5bb9\u5668<\/font>，\u6790\u6784\u51fd\u6570\u65e0\u9700\u5904\u7406！<\/font><\/p>\n Command() { \u68c0\u67e5\u5f53\u524d\u547d\u4ee4\u662f\u5426\u5728\u767d\u540d\u5355\u4e2d<\/p>\n bool SafeCheck(const std::string& cmdstr){ \u5199\u8fd9\u90e8\u5206\u4ee3\u7801\u65f6，\u6211\u4eec\u9700\u8981\u7528\u5230\u4e00\u4e2a\u51fd\u6570 – popen<\/p>\n popen \u7684\u4f5c\u7528\u662f \u200b\u521b\u5efa\u5b50\u8fdb\u7a0b\u6267\u884c\u7cfb\u7edf\u547d\u4ee4，\u5e76\u901a\u8fc7\u7ba1\u9053（Pipe）\u4e0e\u5176\u901a\u4fe1，\u4ed6\u4f1a\u542f\u52a8\u5b50\u8fdb\u7a0b，\u8c03\u7528 \/bin\/sh（\u6216\u5176\u4ed6\u9ed8\u8ba4 shell）\u89e3\u6790\u5e76\u6267\u884c\u6307\u5b9a\u7684\u547d\u4ee4（\u5982 ls -l\u3001grep \u201cerror\u201d \u7b49）\u3002<\/font><\/p>\n std::string Excute(const std::string& cmdstr) { \u547d\u4ee4\u5904\u7406\u51fd\u6570\u662f\u4e00\u4e2a\u957f\u670d\u52a1(\u6b7b\u5faa\u73af)，\u5148\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u4fe1\u606f，\u5982\u679c\u63a5\u6536\u6210\u529f\u5219\u5904\u7406\u6536\u5230\u7684\u6d88\u606f(\u547d\u4ee4)，\u5e76\u5c06\u5904\u7406\u7684\u7ed3\u679c\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef，\u5982\u679c\u8bfb\u5230\u6587\u4ef6\u7ed3\u5c3e\u6216\u8005\u63a5\u6536\u5931\u8d25\u5219\u9000\u51fa\u5faa\u73af！<\/font><\/p>\n void HandlerCommand(int sockfd, InetAddr addr) { \/\/ 2. \u53d1\u9001\u6d88\u606f \u670d\u52a1\u7aef\u4e3b\u51fd\u6570\u4f7f\u7528\u667a\u80fd\u6307\u9488\u6784\u9020Server\u5bf9\u8c61(\u53c2\u6570\u9700\u8981\u52a0\u6267\u884c\u65b9\u6cd5)<\/font> ，\u7136\u540e\u8c03\u7528\u521d\u59cb\u5316\u4e0e\u6267\u884c\u51fd\u6570，\u8c03\u7528\u4e3b\u51fd\u6570\u4f7f\u7528\u8be5\u53ef\u6267\u884c\u7a0b\u5e8f + \u7aef\u53e3\u53f7！<\/font><\/p>\n \u9700\u8981\u6ce8\u610f\u7684\u662f，Command::HandlerCommand \u662f \u200b\u975e\u9759\u6001\u6210\u5458\u51fd\u6570，\u8c03\u7528\u65f6\u5fc5\u987b\u901a\u8fc7 Command \u7c7b\u7684\u5b9e\u4f8b（\u5982 cmdservice）\u6765\u8bbf\u95ee\u3002<\/font><\/p>\n #include "TcpServer.hpp" int main(int argc, char* argv[]){ Command cmdservice;<\/p>\n std::unique_ptr<TcpServer> tsvr = std::make_unique<TcpServer>( tsvr->InitServer(); return 0; #pragma once<\/p>\n #include <iostream> #include "Log.hpp" #define BACKLOG 8<\/p>\n using namespace LogModule; static const uint16_t gport = 8080;<\/p>\n using handler_t = std::function<void(int sockfd, InetAddr addr)>;<\/p>\n class TcpServer{ \/\/ \u521d\u59cb\u5316 struct sockaddr_in local; \/\/ 2. \u7ed1\u5b9a socket \/\/ 3. \u56e0\u4e3a tcp \u662f\u9762\u5411\u8fde\u63a5\u7684，tcp\u9700\u8981\u672a\u6765\u4e0d\u65ad\u5730\u83b7\u53d6\u8fde\u63a5 \/\/ server – 2 \u591a\u7ebf\u7a0b\u7248\u672c \/\/ 1. \u83b7\u53d6\u65b0\u8fde\u63a5 \/\/ \u83b7\u53d6\u6210\u529f \/\/ \u6790\u6784\u51fd\u6570 private: handler_t _handler; #include "TcpServer.hpp" int main(int argc, char* argv[]){ Command cmdservice;<\/p>\n std::unique_ptr<TcpServer> tsvr = std::make_unique<TcpServer>( tsvr->InitServer(); return 0; #pragma once<\/p>\n #include <iostream> #include "InetAddr.hpp" using namespace LogModule;<\/p>\n class Command{ \/\/ 2. \u53d1\u9001\u6d88\u606f \u672c\u7bc7\u535a\u6587\u5bf9 \u3010Linux\u7f51\u7edc\u3011\u6784\u5efa\u7c7b\u4f3cXShell\u529f\u80fd\u7684TCP\u670d\u52a1\u5668 \u505a\u4e86\u4e00\u4e2a\u8f83\u4e3a\u8be6\u7ec6\u7684\u4ecb\u7ecd，\u4e0d\u77e5\u9053\u5bf9\u4f60\u6709\u6ca1\u6709\u5e2e\u52a9\u5462<\/p>\n \u89c9\u5f97\u535a\u4e3b\u5199\u5f97\u8fd8\u4e0d\u9519\u7684\u4e09\u8fde\u652f\u6301\u4e0b\u5427！\u4f1a\u7ee7\u7eed\u52aa\u529b\u7684~<\/p>\n","protected":false},"excerpt":{"rendered":" \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e38\u6b21\uff0c\u6536\u85cf37\u6b21\u3002\u672c\u7bc7\u535a\u6587\u5bf9\u3010Linux\u7f51\u7edc\u3011\u6784\u5efa\u7c7b\u4f3cXShell\u529f\u80fd\u7684TCP\u670d\u52a1\u5668\u505a\u4e86\u4e00\u4e2a\u8f83\u4e3a\u8be6\u7ec6\u7684\u4ecb\u7ecd\uff0c\u4e0d\u77e5\u9053\u5bf9\u4f60\u6709\u6ca1\u6709\u5e2e\u52a9\u5462\u89c9\u5f97\u535a\u4e3b\u5199\u5f97\u8fd8\u4e0d\u9519\u7684\u4e09\u8fde\u652f\u6301\u4e0b\u5427\uff01\u4f1a\u7ee7\u7eed\u52aa\u529b\u7684~<\/p>\n","protected":false},"author":2,"featured_media":32707,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,78],"topic":[],"class_list":["post-32710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-78"],"yoast_head":"\n🏳\ufe0f\u200d🌈\u4e00\u3001TcpServer.hpp<\/h2>\n
1.1 \u57fa\u672c\u7ed3\u6784<\/h3>\n
\n public:
\n \/\/ \u6784\u9020\u51fd\u6570
\n TcpServer(handler_t handler,uint16_t port = gport)
\n :_handler(handler), _port(port), _isrunning(false){}
\n \/\/ \u521d\u59cb\u5316
\n void InitServer(){}
\n \/\/ server – 2 \u591a\u7ebf\u7a0b\u7248\u672c
\n void Loop(){}
\n \/\/ \u6790\u6784\u51fd\u6570
\n ~TcpServer(){}<\/p>\n
\n int _listensockfd; \/\/ \u76d1\u542csocket
\n uint16_t _port;
\n bool _isrunning;
\n handler_t _handler;
\n};<\/p>\n1.2 \u591a\u7ebf\u7a0b\u5904\u7406\u51fd\u6570<\/h3>\n
\n static void* Execute(void* args){
\n ThreadDate* td = static_cast<ThreadDate*>(args);
\n \/\/ \u5b50\u7ebf\u7a0b\u7ed3\u675f\u540e\u7531\u7cfb\u7edf\u81ea\u52a8\u56de\u6536\u8d44\u6e90，\u65e0\u9700\u4e3b\u7ebf\u7a0b\u8c03\u7528 pthread_join
\n pthread_detach(pthread_self()); \/\/ \u5206\u79bb\u65b0\u7ebf\u7a0b，\u65e0\u9700\u4e3b\u7ebf\u7a0b\u56de\u6536
\n td->_self->_handler(td->_sockfd, td->_addr);
\n delete td;
\n return nullptr;
\n }<\/p>\n🏳\ufe0f\u200d🌈\u4e8c\u3001Common.hpp<\/h2>\n
2.1 \u57fa\u672c\u7ed3\u6784<\/h3>\n
\n public:
\n Command(){}
\n bool SafeCheck(const std::string& cmdstr){}
\n std::string Excute(const std::string& cmdstr){}
\n void HandlerCommand(int sockfd, InetAddr addr){}
\n ~Command(){}
\n private:
\n std::set<std::string> _safe_command; \/\/ \u5141\u8bb8\u6267\u884c\u7684\u547d\u4ee4
\n};<\/p>\n2.2 \u6784\u9020\u3001\u6790\u6784\u51fd\u6570<\/h3>\n
\n \/\/ \u767d\u540d\u5355
\n _safe_command.insert("ls");
\n _safe_command.insert("pwd");
\n _safe_command.insert("touch");
\n _safe_command.insert("whoami");
\n _safe_command.insert("which");
\n}
\n~Command(){}<\/p>\n2.3 SafeCheck()<\/h3>\n
\n for(auto& cmd : _safe_command){
\n \/\/ \u503c\u6bd4\u8f83\u547d\u4ee4\u5f00\u5934
\n if(strncmp(cmd.c_str(), cmdstr.c_str(), cmd.size()) == 0){
\n return true;
\n }
\n }
\n return false;
\n }<\/p>\n2.4 Excute()<\/h3>\n
\n \/\/ \u68c0\u67e5\u662f\u5426\u5b89\u5168，\u4e0d\u5b89\u5168\u8fd4\u56de
\n if (!SafeCheck(cmdstr)) {
\n return "unsafe";
\n }
\n std::string result;
\n \/\/ popen \u521b\u5efa\u5b50\u8fdb\u7a0b\u6267\u884c\u7cfb\u7edf\u547d\u4ee4，\u5e76\u901a\u8fc7\u7ba1\u9053（Pipe）\u4e0e\u5176\u901a\u4fe1
\n \/\/ popen(const char* command, const char* type)
\n \/\/ command: \u547d\u4ee4\u5b57\u7b26\u4e32
\n \/\/ type: \u7ba1\u9053\u7c7b\u578b，"r"\u8868\u793a\u8bfb，"w"\u8868\u793a\u5199，"r+"\u8868\u793a\u8bfb\u5199
\n \/\/ \u8fd4\u56de\u6587\u4ef6\u6307\u9488，\u5931\u8d25\u8fd4\u56deNULL
\n FILE* fp = popen(cmdstr.c_str(), "r");
\n if (fp) {
\n \/\/ \u8bfb\u53d6\u5b50\u8fdb\u7a0b\u7684\u8f93\u51fa
\n \/\/ \u4e00\u884c\u8bfb\u53d6
\n char line[1024];
\n while (fgets(line, sizeof(line), fp)) {
\n result += line;
\n }
\n return result.empty() ? "success" : result; \/\/ \u6709\u4e9b\u547d\u4ee4\u521b\u5efa\u65e0\u8fd4\u56de\u503c
\n }
\n}<\/p>\n2.5 HandlerCommand()<\/h3>\n
\n \/\/ \u6211\u4eec\u628a\u5b83\u5f53\u4f5c\u4e00\u4e2a\u957f\u670d\u52a1
\n while (true) {
\n char commandbuffer[1024]; \/\/ \u63a5\u6536\u547d\u4ee4\u7684\u7f13\u51b2\u533a
\n \/\/ 1. \u63a5\u6536\u6d88\u606f
\n \/\/ recv(int sockfd, void* buf, size_t len, int flags)
\n \/\/ sockfd: \u5957\u63a5\u5b57\u63cf\u8ff0\u7b26
\n \/\/ buf: \u63a5\u6536\u7f13\u51b2\u533a
\n \/\/ len: \u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f
\n \/\/ flags: \u63a5\u6536\u6807\u5fd7 0\u8868\u793a\u963b\u585e，\u975e0\u8868\u793a\u975e\u963b\u585e
\n ssize_t n = ::recv(sockfd, commandbuffer, sizeof(commandbuffer) – 1, 0);
\n if (n > 0) {
\n commandbuffer[n] = 0;
\n LOG(LogLevel::INFO) << "get command from client" << addr.AddrStr()
\n << ":" << commandbuffer;
\n std::string result = Excute(commandbuffer);<\/p>\n
\n \/\/ send(int sockfd, const void* buf, size_t len, int flags)
\n \/\/ sockfd: \u5957\u63a5\u5b57\u63cf\u8ff0\u7b26
\n \/\/ buf: \u53d1\u9001\u7f13\u51b2\u533a
\n \/\/ len: \u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f
\n \/\/ flags: \u53d1\u9001\u6807\u5fd7 0\u8868\u793a\u4e0d\u963b\u585e，\u975e0\u8868\u793a\u963b\u585e
\n ::send(sockfd, result.c_str(), result.size(), 0);
\n }
\n \/\/ \u8bfb\u5230\u6587\u4ef6\u7ed3\u5c3e
\n else if (n == 0) {
\n LOG(LogLevel::INFO) << "client " << addr.AddrStr() << " quit";
\n break;
\n } else {
\n LOG(LogLevel::ERROR) << "read error from client " << addr.AddrStr();
\n break;
\n }
\n }
\n}<\/p>\n🏳\ufe0f\u200d🌈\u4e09\u3001TcpServer.cpp<\/h2>\n
\n#include "Command.hpp"<\/p>\n
\n if(argc != 2){
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n Die(1);
\n }
\n uint16_t port = std::stoi(argv[1]);<\/p>\n
\n \/\/ &Command::HandlerCommand：\u6210\u5458\u51fd\u6570\u6307\u9488\u3002
\n \/\/ &cmdservice：Command \u5bf9\u8c61\u7684\u5b9e\u4f8b\u6307\u9488（this \u6307\u9488）
\n \/\/ _1 \u548c _2：\u5360\u4f4d\u7b26，\u8868\u793a\u56de\u8c03\u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570（int sockfd \u548c InetAddr addr）
\n std::bind(&Command::HandlerCommand, &cmdservice, std::placeholders::_1, std::placeholders::_2),
\n port);<\/p>\n
\n tsvr->Loop();<\/p>\n
\n}<\/p>\n🏳\ufe0f\u200d🌈\u56db\u3001\u6d4b\u8bd5<\/h2>\n
![\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250425102523-680b631367760.png\")
<\/p>\n🏳\ufe0f\u200d🌈\u4e94\u3001\u6574\u4f53\u4ee3\u7801<\/h2>\n
5.1 TcpServer.hpp<\/h3>\n
\n#include <cstring>
\n#include <string>
\n#include <cerrno>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include <unistd.h>
\n#include <sys\/wait.h>
\n#include <signal.h>
\n#include <pthread.h>
\n#include <functional><\/p>\n
\n#include "Common.hpp"
\n#include "InetAddr.hpp"
\n#include "ThreadPool.hpp"<\/p>\n
\nusing namespace ThreadPoolModule;<\/p>\n
\n public:
\n \/\/ \u6784\u9020\u51fd\u6570
\n TcpServer(handler_t handler,uint16_t port = gport)
\n :_handler(handler), _port(port), _isrunning(false){}<\/p>\n
\n void InitServer(){
\n \/\/ 1. \u521b\u5efa socket
\n _listensockfd = ::socket(AF_INET, SOCK_STREAM, 0);
\n if(_listensockfd < 0){
\n LOG(LogLevel::ERROR) << "create socket error: " << strerror(errno);
\n Die(2);
\n }
\n LOG(LogLevel::INFO) << "create sockfd success: " << _listensockfd;<\/p>\n
\n memset(&local, 0, sizeof(local));
\n local.sin_family = AF_INET;
\n local.sin_port = htons(_port);
\n local.sin_addr.s_addr = htonl(INADDR_ANY);<\/p>\n
\n if(::bind(_listensockfd, CONV(&local), sizeof(local)) < 0){
\n LOG(LogLevel::ERROR) << "bind socket error: " << strerror(errno);
\n Die(3);
\n }
\n LOG(LogLevel::INFO) << "bind sockfd success: " << _listensockfd;<\/p>\n
\n \/\/ listen \u5c31\u662f\u76d1\u542c\u8fde\u63a5\u7684\u610f\u601d，\u6240\u4ee5\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u961f\u5217，\u6765\u4fdd\u5b58\u7b49\u5f85\u8fde\u63a5\u7684\u5ba2\u6237\u7aef
\n \/\/ \u961f\u5217\u7684\u957f\u5ea6\u4e3a 8，\u8868\u793a\u6700\u591a\u53ef\u4ee5\u6709 8 \u4e2a\u5ba2\u6237\u7aef\u7b49\u5f85\u8fde\u63a5
\n \/\/ listen(int sockfd, int backlog)
\n \/\/ sockfd \u5c31\u662f\u4e4b\u524d\u521b\u5efa\u7684 socket \u53e5\u67c4
\n \/\/ backlog \u5c31\u662f\u961f\u5217\u7684\u957f\u5ea6
\n \/\/ \u8fd4\u56de\u503c：\u6210\u529f\u8fd4\u56de 0，\u5931\u8d25\u8fd4\u56de -1
\n if(::listen(_listensockfd, BACKLOG) < 0){
\n LOG(LogLevel::ERROR) << "listen socket error: " << strerror(errno);
\n Die(4);
\n }
\n LOG(LogLevel::INFO) << "listen sockfd success: " << _listensockfd;
\n }<\/p>\n
\n \/\/ \u4e3a\u6bcf\u4e2a\u65b0\u8fde\u63a5\u5206\u914d\u72ec\u7acb\u7684\u7ebf\u7a0b\u5904\u7406\u4e1a\u52a1\u903b\u8f91
\n \/\/ （Loop \u51fd\u6570）\u901a\u8fc7 accept \u5faa\u73af\u76d1\u542c\u65b0\u8fde\u63a5，\u4e3a\u6bcf\u4e2a\u65b0\u8fde\u63a5\u521b\u5efa\u7ebf\u7a0b（pthread_create）\u4f20\u9012\u8fde\u63a5\u4fe1\u606f\u7ed9\u5b50\u7ebf\u7a0b（\u901a\u8fc7 ThreadDate \u7ed3\u6784\u4f53）
\n \/\/ （Execute \u51fd\u6570）\u200b\u200b\u8c03\u7528 pthread_detach \u5206\u79bb\u81ea\u8eab（\u907f\u514d\u4e3b\u7ebf\u7a0b\u8c03\u7528 pthread_join）\u6267\u884c Server \u51fd\u6570\u5904\u7406\u5177\u4f53\u4e1a\u52a1\u903b\u8f91\u7ebf\u7a0b\u7ed3\u675f\u540e\u81ea\u52a8\u91ca\u653e\u8d44\u6e90（\u901a\u8fc7 delete td）
\n \/\/ （Server \u51fd\u6570）\u200b\u5faa\u73af\u8bfb\u53d6\u5ba2\u6237\u7aef\u6570\u636e（read），\u5904\u7406\u4e1a\u52a1\u903b\u8f91（\u793a\u4f8b\u4e2d\u7684\u56de\u663e\u670d\u52a1），\u53d1\u9001\u54cd\u5e94（write）\u5173\u95ed\u8fde\u63a5（close(sockfd)）
\n void Loop(){
\n _isrunning = true;
\n while(_isrunning){
\n struct sockaddr_in client;
\n socklen_t len = sizeof(client);<\/p>\n
\n int sockfd = ::accept(_listensockfd, CONV(&client), &len);
\n if(sockfd < 0){
\n LOG(LogLevel::ERROR) << "accept socket error: " << strerror(errno);
\n continue;
\n }
\n InetAddr cli(client);
\n LOG(LogLevel::INFO) << "accept new connection from " << cli.AddrStr() << " sockfd: " << sockfd;<\/p>\n
\n pthread_t tid;
\n ThreadDate* td = new ThreadDate(sockfd, this, cli);
\n \/\/ pthread_create \u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u7ebf\u7a0bid，\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u7ebf\u7a0b\u5c5e\u6027，\u7b2c\u4e09\u4e2a\u53c2\u6570\u662f\u7ebf\u7a0b\u51fd\u6570，\u7b2c\u56db\u4e2a\u53c2\u6570\u662f\u7ebf\u7a0b\u51fd\u6570\u53c2\u6570
\n pthread_create(&tid, nullptr, Execute, td);
\n }
\n _isrunning = false;
\n }
\n \/\/ \u7ebf\u7a0b\u51fd\u6570\u53c2\u6570\u5bf9\u8c61
\n class ThreadDate{
\n public:
\n int _sockfd;
\n TcpServer* _self;
\n InetAddr _addr;
\n public:
\n ThreadDate(int sockfd, TcpServer* self, const InetAddr& addr)
\n : _sockfd(sockfd), _self(self), _addr(addr)
\n {}
\n };
\n \/\/ \u7ebf\u7a0b\u51fd\u6570
\n static void* Execute(void* args){
\n ThreadDate* td = static_cast<ThreadDate*>(args);
\n \/\/ \u5b50\u7ebf\u7a0b\u7ed3\u675f\u540e\u7531\u7cfb\u7edf\u81ea\u52a8\u56de\u6536\u8d44\u6e90，\u65e0\u9700\u4e3b\u7ebf\u7a0b\u8c03\u7528 pthread_join
\n pthread_detach(pthread_self()); \/\/ \u5206\u79bb\u65b0\u7ebf\u7a0b，\u65e0\u9700\u4e3b\u7ebf\u7a0b\u56de\u6536
\n td->_self->_handler(td->_sockfd, td->_addr);
\n delete td;
\n return nullptr;
\n }<\/p>\n
\n ~TcpServer(){}<\/p>\n
\n int _listensockfd; \/\/ \u76d1\u542csocket
\n uint16_t _port;
\n bool _isrunning;<\/p>\n
\n};<\/p>\n5.2 TcpServer.cpp<\/h3>\n
\n#include "Command.hpp"<\/p>\n
\n if(argc != 2){
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n Die(1);
\n }
\n uint16_t port = std::stoi(argv[1]);<\/p>\n
\n \/\/ &Command::HandlerCommand：\u6210\u5458\u51fd\u6570\u6307\u9488\u3002
\n \/\/ &cmdservice：Command \u5bf9\u8c61\u7684\u5b9e\u4f8b\u6307\u9488（this \u6307\u9488）
\n \/\/ _1 \u548c _2：\u5360\u4f4d\u7b26，\u8868\u793a\u56de\u8c03\u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570（int sockfd \u548c InetAddr addr）
\n std::bind(&Command::HandlerCommand, &cmdservice, std::placeholders::_1, std::placeholders::_2),
\n port);<\/p>\n
\n tsvr->Loop();<\/p>\n
\n}<\/p>\n5.3 Command.hpp<\/h3>\n
\n#include <set>
\n#include <cstring>
\n#include <cstdio><\/p>\n
\n#include "Log.hpp"<\/p>\n
\n public:
\n Command(){
\n \/\/ \u767d\u540d\u5355
\n _safe_command.insert("ls");
\n _safe_command.insert("pwd");
\n _safe_command.insert("touch");
\n _safe_command.insert("whoami");
\n _safe_command.insert("which");
\n }
\n bool SafeCheck(const std::string& cmdstr){
\n for(auto& cmd : _safe_command){
\n \/\/ \u503c\u6bd4\u8f83\u547d\u4ee4\u5f00\u5934
\n if(strncmp(cmd.c_str(), cmdstr.c_str(), cmd.size()) == 0){
\n return true;
\n }
\n }
\n return false;
\n }
\n std::string Excute(const std::string& cmdstr){
\n \/\/ \u68c0\u67e5\u662f\u5426\u5b89\u5168，\u4e0d\u5b89\u5168\u8fd4\u56de
\n if(!SafeCheck(cmdstr)){
\n return "unsafe";
\n }
\n std::string result;
\n FILE* fp = popen(cmdstr.c_str(), "r");
\n if(fp){
\n char line[1024];
\n while(fgets(line, sizeof(line), fp)){
\n result += line;
\n }
\n return result.empty() ? "success" : result; \/\/ \u6709\u4e9b\u547d\u4ee4\u521b\u5efa\u65e0\u8fd4\u56de\u503c
\n }
\n return "Execute error";
\n }
\n std::string Excute(std::string& cmdstr){
\n \/\/ \u68c0\u67e5\u662f\u5426\u5b89\u5168，\u4e0d\u5b89\u5168\u8fd4\u56de
\n if(!SafeCheck(cmdstr)){
\n return "unsafe";
\n }
\n std::string result;
\n \/\/ popen \u521b\u5efa\u5b50\u8fdb\u7a0b\u6267\u884c\u7cfb\u7edf\u547d\u4ee4，\u5e76\u901a\u8fc7\u7ba1\u9053（Pipe）\u4e0e\u5176\u901a\u4fe1
\n \/\/ popen(const char* command, const char* type)
\n \/\/ command: \u547d\u4ee4\u5b57\u7b26\u4e32
\n \/\/ type: \u7ba1\u9053\u7c7b\u578b，"r"\u8868\u793a\u8bfb，"w"\u8868\u793a\u5199，"r+"\u8868\u793a\u8bfb\u5199
\n \/\/ \u8fd4\u56de\u6587\u4ef6\u6307\u9488，\u5931\u8d25\u8fd4\u56deNULL
\n FILE* fp = popen(cmdstr.c_str(), "r");
\n if(fp){
\n \/\/ \u8bfb\u53d6\u5b50\u8fdb\u7a0b\u7684\u8f93\u51fa
\n \/\/ \u4e00\u884c\u8bfb\u53d6
\n char line[1024];
\n while(fgets(line, sizeof(line), fp)){
\n result += line;
\n }
\n return result.empty() ? "success" : result; \/\/ \u6709\u4e9b\u547d\u4ee4\u521b\u5efa\u65e0\u8fd4\u56de\u503c
\n }
\n }
\n void HandlerCommand(int sockfd, InetAddr addr){
\n \/\/ \u6211\u4eec\u628a\u5b83\u5f53\u4f5c\u4e00\u4e2a\u957f\u670d\u52a1
\n while(true){
\n char commandbuffer[1024]; \/\/ \u63a5\u6536\u547d\u4ee4\u7684\u7f13\u51b2\u533a
\n \/\/ 1. \u63a5\u6536\u6d88\u606f
\n \/\/ recv(int sockfd, void* buf, size_t len, int flags)
\n \/\/ sockfd: \u5957\u63a5\u5b57\u63cf\u8ff0\u7b26
\n \/\/ buf: \u63a5\u6536\u7f13\u51b2\u533a
\n \/\/ len: \u63a5\u6536\u7f13\u51b2\u533a\u5927\u5c0f
\n \/\/ flags: \u63a5\u6536\u6807\u5fd7 0\u8868\u793a\u963b\u585e，\u975e0\u8868\u793a\u975e\u963b\u585e
\n ssize_t n = ::recv(sockfd, commandbuffer, sizeof(commandbuffer) – 1, 0);
\n if(n > 0){
\n commandbuffer[n] = 0;
\n LOG(LogLevel::INFO) << "get command from client" << addr.AddrStr() << ":" << commandbuffer;
\n std::string result = Excute(commandbuffer);<\/p>\n
\n \/\/ send(int sockfd, const void* buf, size_t len, int flags)
\n \/\/ sockfd: \u5957\u63a5\u5b57\u63cf\u8ff0\u7b26
\n \/\/ buf: \u53d1\u9001\u7f13\u51b2\u533a
\n \/\/ len: \u53d1\u9001\u7f13\u51b2\u533a\u5927\u5c0f
\n \/\/ flags: \u53d1\u9001\u6807\u5fd7 0\u8868\u793a\u4e0d\u963b\u585e，\u975e0\u8868\u793a\u963b\u585e
\n ::send(sockfd, result.c_str(), result.size(), 0);
\n }
\n \/\/ \u8bfb\u5230\u6587\u4ef6\u7ed3\u5c3e
\n else if(n == 0){
\n LOG(LogLevel::INFO) << "client " << addr.AddrStr() << " quit";
\n break;
\n }
\n else{
\n LOG(LogLevel::ERROR) << "read error from client " << addr.AddrStr();
\n break;
\n }
\n }
\n }
\n ~Command(){}
\n private:
\n std::set<std::string> _safe_command; \/\/ \u5141\u8bb8\u6267\u884c\u7684\u547d\u4ee4
\n};<\/p>\n
\n👥\u603b\u7ed3<\/h2>\n