无界面 socket通信模拟在线评测

灰太狼 2022-06-03 07:30 142阅读 0赞

无界面 socket通信模拟在线评测

客户端向服务端发送一个.c文件  服务端编译并运行此文件并把结果或错误信息返回给客户端;

server.c

#include<stdio.h>
    #include<stdlib.h>
    #include<string.h>
    #include<sys/types.h>
    #include<unistd.h>
    #include<sys/socket.h>
    #include<netinet/in.h>
    #include<errno.h>
    
    #define SERVER_PORT 8888
    #define LISTEN_QUEUE 20
    #define BUFFER_SIZE  5000
    
    int main(void)
    {
         FILE *F,*F1;
         pid_t pid;
         int fd[2];
         int len;
         char buffer[BUFFER_SIZE];
         bzero(buffer,BUFFER_SIZE);
         char buffer2[BUFFER_SIZE];
         bzero(buffer2,BUFFER_SIZE);
        //声明并初始化一个服务器端的socket地址结构
         struct sockaddr_in server_addr;
    
         //int server_socket_fd = socket(PF_INET,SOCK_STREAM,0);
         bzero(&server_addr,sizeof(server_addr));
         server_addr.sin_family = AF_INET;
         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
         server_addr.sin_port = htons(SERVER_PORT);
    
         //创建socket  若成功 返回socket描述符
         int server_socket_fd = socket(PF_INET,SOCK_STREAM,0);
         if(server_socket_fd < 0){
             perror("创建套接字失败:");
             exit(1);
         }
         //绑定socket 和 socket地址结构
         if(bind(server_socket_fd,(struct sockaddr*)&server_addr,sizeof(server_addr))){
                perror("绑定失败:");
                exit(1);
         }
    
         //socket 监听
         if(-1 == (listen(server_socket_fd,LISTEN_QUEUE)))
         {
             perror("监听失败:");
             exit(1);
         }
    
             //定义客户打端的socket地址结构
            struct sockaddr_in client_addr;
            socklen_t client_addr_length = sizeof(client_addr);
        while(1){
    
            int new_server_socket_fd = accept(server_socket_fd,(struct sockaddr*)&client_addr,&client_addr_length);
            if(new_server_socket_fd < 0 ){
                if(errno == EINTR){
                    continue;
                }
                else{
                perror("接收失败:");
                close(server_socket_fd);
                exit(1);
            }
    
        }
             pid = fork();
            if(pid < 0){
                perror("创建进程失败:");
                close(new_server_socket_fd);
                exit(1);
            }else if(pid == 0){
    
            while((len = recv(new_server_socket_fd,buffer,BUFFER_SIZE,0)) > 0){
                F=fopen("luo.c","w+");
               fwrite(buffer,sizeof(char),strlen(buffer),F);
    
               fclose(F);
               if((pipe(fd))<0){
                   perror("创建管道失败:");
                   exit(1);
               }
               close(2);
               int result = dup2(fd[1],2);
               if(result < 0){
                   perror("redirect stderr error:");
                   exit(1);
               }
    
               system("gcc -o luo luo.c");
               if(access("luo",F_OK)){
                   printf("编译失败,返回错误信息\n");
                   read(fd[0],buffer2,BUFFER_SIZE);
               }else{
               F1 = popen("./luo","r");
               fread(buffer2,sizeof(char),BUFFER_SIZE,F1);
               printf("编译成功\n");
               pclose(F1);
               system("rm luo");
               }
               printf("%s\n",buffer2);
               send(new_server_socket_fd,buffer2,strlen(buffer2),0);
              close(fd[1]);
              close(fd[0]);
               bzero(buffer,BUFFER_SIZE);
               bzero(buffer2,BUFFER_SIZE);
    
            }
            bzero(buffer,BUFFER_SIZE);
            bzero(buffer2,BUFFER_SIZE);
            close(server_socket_fd);
            _exit(0);
        
            }else{
               close(new_server_socket_fd);
            }  
         }
            return 0;
    
    }

client.c

#include<stdio.h>
    #include<stdlib.h>
    #include<string.h>
    #include<netinet/in.h>
    #include<sys/types.h>
    #include<sys/socket.h>
    #include<unistd.h>
    
    #define SERVER_PORT 8888
    #define BUFFER_SIZE 10000
    
    int main()
    {
        FILE *F;
        struct sockaddr_in client_addr;
        bzero(&client_addr,sizeof(client_addr));
        client_addr.sin_family = AF_INET;
        client_addr.sin_addr.s_addr = htonl(INADDR_ANY);
        client_addr.sin_port = htons(SERVER_PORT);
    
        int client_socket_fd = socket(AF_INET,SOCK_STREAM,0);
        if(client_socket_fd < 0){
            perror("创建套接字失败:");
            exit(1);
        }
        if((connect(client_socket_fd,(struct sockaddr*)&client_addr,sizeof(client_addr))) == -1){
            perror("连接失败:");
            close(client_socket_fd);
            exit(1);
        }
        char buffer[BUFFER_SIZE];
        char buffer1[20];
        int return_len;
        while(1){
        bzero(buffer,BUFFER_SIZE);
        bzero(buffer,20);
        printf("请输入要运行的程序:");
        scanf("%s",buffer1);
        F = fopen(buffer1,"r");
        fread(buffer,sizeof(char),10000,F);
        return_len = send(client_socket_fd,buffer,strlen(buffer),0);
        if(return_len <= 0){
            perror("发送失败:");
            exit(1);
        }
        char buffer1[BUFFER_SIZE];
        bzero(buffer1,BUFFER_SIZE);
        recv(client_socket_fd,buffer1,1024,0);
        printf("结果为:%s\n",buffer1);
        fclose(F);
        }
        close(client_socket_fd);
        return 0;
    }

运行截图:

![Center][]![Center][]

![Center 1][]

1.c 文件内容:

#include<stdio.h>
    int main()
    {
        printf("我是***!\n");
        return 0;
    
    }

2.c 文件内容:

#include<stdio.h>
    int main()
    {
        printf("错误\n")
            return 0;
    }

[Center]: /images/20220603/6765b3bf79e441d6a9c7c8a72eaa3463.png
[Center 1]: /images/20220603/143524f51f65498d9e7e6e6d706f9700.png