2018-2019_20165212_20165222_20165313《信息安全系统设计基础》实验三报告

2018-2019 20165222《信息安全系统设计基础》实验三 并发程序

实验三-并发程序-1

任务详情

1:学习使用Linux命令wc(1)

2:基于Linux Socket程序设计实现wc(1)服务器（端口号是学号的后6位）和客户端

   客户端传一个文本文件给服务器

   服务器返回文本文件中的单词数

3：上传代码并至少测试附件中的二个文件

实验步骤:

使用man -k wc查找相关命令

继续使用man 1 wc查找相关指令

代码展示

client.c

#include <netinet/in.h>    // for sockaddr_in
#include <sys/types.h>    // for socket
#include <sys/socket.h>    // for socket
#include <stdio.h>        // for printf
#include <stdlib.h>        // for exit
#include <string.h>        // for bzero
#include <unistd.h>
/*
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
*/

#define HELLO_WORLD_SERVER_PORT    165222 
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
#define FILE_WORDS_NUMBER 32
int main(int argc, char **argv)
{
   if (argc != 2)
   {
       printf("Usage: ./%s ServerIPAddress
",argv[0]);
       exit(1);
   }

   //设置一个socket地址结构client_addr,代表客户机internet地址, 端口
   struct sockaddr_in client_addr;
   bzero(&client_addr,sizeof(client_addr)); //把一段内存区的内容全部设置为0
   client_addr.sin_family = AF_INET;    //internet协议族
   client_addr.sin_addr.s_addr = htons(INADDR_ANY);//INADDR_ANY表示自动获取本机地址
   client_addr.sin_port = htons(0);    //0表示让系统自动分配一个空闲端口
   //创建用于internet的流协议(TCP)socket,用client_socket代表客户机socket
   int client_socket = socket(AF_INET,SOCK_STREAM,0);
   if( client_socket < 0)
   {
       printf("Create Socket Failed!
");
       exit(1);
   }
   //把客户机的socket和客户机的socket地址结构联系起来
   if( bind(client_socket,(struct sockaddr*)&client_addr,sizeof(client_addr)))
   {
       printf("Client Bind Port Failed!
"); 
       exit(1);
   }

   //设置一个socket地址结构server_addr,代表服务器的internet地址, 端口
   struct sockaddr_in server_addr;
   bzero(&server_addr,sizeof(server_addr));
   server_addr.sin_family = AF_INET;
   if(inet_aton(argv[1],&server_addr.sin_addr) == 0) //服务器的IP地址来自程序的参数
   {
       printf("Server IP Address Error!
");
       exit(1);
   }
   server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);
   socklen_t server_addr_length = sizeof(server_addr);
   //向服务器发起连接,连接成功后client_socket代表了客户机和服务器的一个socket连接
   if(connect(client_socket,(struct sockaddr*)&server_addr, server_addr_length) < 0)
   {
       printf("Can Not Connect To %s!
",argv[1]);
       exit(1);
   }

   char file_name[FILE_NAME_MAX_SIZE+1];
   bzero(file_name, FILE_NAME_MAX_SIZE+1);
   printf("Please Input File Name On Server:	");
   scanf("%s", file_name);
   
   char buffer[BUFFER_SIZE];
   bzero(buffer,BUFFER_SIZE);
   strncpy(buffer, file_name, strlen(file_name)>BUFFER_SIZE?BUFFER_SIZE:strlen(file_name));
   //向服务器发送buffer中的数据
   send(client_socket,buffer,BUFFER_SIZE,0);

   FILE * fp = fopen(file_name,"r");
   if(NULL == fp )
   {
       printf("File:	%s Not Found
", file_name);
       exit(1);
   }
   else
   {
           bzero(buffer, BUFFER_SIZE);
           int file_block_length = 0;
           while( (file_block_length = fread(buffer,sizeof(char),BUFFER_SIZE, fp))>0)
           {
               //printf("file_block_length = %d
",file_block_length);
               //发送buffer中的字符串到服务器
               if(send(client_socket,buffer,file_block_length,0)<0)
               {
                   printf("Send File:	%s Failed
", file_name);
                   break;
               }
               bzero(buffer, BUFFER_SIZE);
           }
   }
   
   printf("Send File:	 %s To Server[%s] Finished
",file_name, argv[1]);

   printf("The File has %d words.
", wc_func(file_name));
   fclose(fp);
 
   //关闭socket
   close(client_socket);
   return 0;
}
int wc_func(char *file_name)
{
int t;
int w = 0;
int state = 0;
FILE *in;
if((in = fopen(file_name,"r"))==NULL)
{
printf("wc %s:no this file or dir
",file_name);
return;
}
while((t=fgetc(in))!=EOF)
{

if(t=='
'||t==' '||t=='
') {
           	state = 0;
           	continue;
       	} else {
           	if(state == 0) {
               	state = 1;
               	w++;
          }
           	continue;
       	}
}
return w;
}

　　serve.c

#include <netinet/in.h>    // for sockaddr_in
#include <sys/types.h>    // for socket
#include <sys/socket.h>    // for socket
#include <stdio.h>        // for printf
#include <stdlib.h>        // for exit
#include <string.h>        // for bzero
#include <unistd.h>
/*
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
*/
#define HELLO_WORLD_SERVER_PORT    165222 
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512
#define FILE_WORDS_NUMBER 32
int wc_func(char *file_name);
int main(int argc, char **argv)
{
    //设置一个socket地址结构server_addr,代表服务器internet地址, 端口
    struct sockaddr_in server_addr;
    bzero(&server_addr,sizeof(server_addr)); //把一段内存区的内容全部设置为0
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htons(INADDR_ANY);
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);

    //创建用于internet的流协议(TCP)socket,用server_socket代表服务器socket
    int server_socket = socket(PF_INET,SOCK_STREAM,0);
    if( server_socket < 0)
    {
        printf("Create Socket Failed!");
        exit(1);
    }
    
    //把socket和socket地址结构联系起来
    if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
    {
        printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT); 
        exit(1);
    }
    
    //server_socket用于监听
    if ( listen(server_socket, LENGTH_OF_LISTEN_QUEUE) )
    {
        printf("Server Listen Failed!"); 
        exit(1);
    }
    while (1) //服务器端要一直运行
    {
        //定义客户端的socket地址结构client_addr
        struct sockaddr_in client_addr;
        socklen_t length = sizeof(client_addr);

        //接受一个到server_socket代表的socket的一个连接
        //如果没有连接请求,就等待到有连接请求--这是accept函数的特性
        //accept函数返回一个新的socket,这个socket(new_server_socket)用于同连接到的客户的通信
        //new_server_socket代表了服务器和客户端之间的一个通信通道
        //accept函数把连接到的客户端信息填写到客户端的socket地址结构client_addr中
        int new_server_socket = accept(server_socket,(struct sockaddr*)&client_addr,&length);
        if ( new_server_socket < 0)
        {
            printf("Server Accept Failed!
");
            break;
        }
        
    char file_name[FILE_NAME_MAX_SIZE+1];
    bzero(file_name, FILE_NAME_MAX_SIZE+1);
    char buffer[BUFFER_SIZE];
    bzero(buffer,BUFFER_SIZE);
    recv(new_server_socket,file_name,BUFFER_SIZE,0);
    
    
    FILE * fp = fopen(file_name,"w");
    if(NULL == fp )
    {
        printf("File:	%s Can Not Open To Write
", file_name);
        exit(1);
    }
    
    //从客户端接收数据到buffer中
    bzero(buffer,BUFFER_SIZE);
    int len = 0;
    while( len = recv(new_server_socket,buffer,BUFFER_SIZE,0))
    {
        if(len < 0)
        {
            printf("Recieve Data From Client %s Failed!
", argv[1]);
            break;
        }

        int write_length = fwrite(buffer,sizeof(char),len,fp);
        if (write_length<len)
        {
            printf("File:	%s Write Failed
", file_name);
            break;
        }
        bzero(buffer,BUFFER_SIZE);    
    }
    printf("File:	%s Transfer Finished!
",file_name);
    
    fclose(fp);
    
    //关闭与客户端的连接
    close(new_server_socket);
    }
    //关闭监听用的socket
    close(server_socket);
    return 0;
}

　　

运行截图

实验三-并发程序-2

任务详情

• 使用多线程实现wc服务器并使用同步互斥机制保证计数正确
• 上方提交代码
• 下方提交测试
• 对比单线程版本的性能，并分析原因

代码展示

serve.c

#include<netinet/in.h>                         // for sockaddr_in  
#include<sys/types.h>                          // for socket  
#include<sys/socket.h>                         // for socket  
#include<stdio.h>                              // for printf  
#include<stdlib.h>                             // for exit  
#include<string.h>                             // for bzero  
  
#define HELLO_WORLD_SERVER_PORT       165222
#define BUFFER_SIZE                   1024  
#define FILE_NAME_MAX_SIZE            512  
int mywc(char file_name[],int choose);
int main(int argc, char **argv)  
{  
    FILE *fp;
    if (argc != 2)  
    {  
        printf("Usage: ./%s ServerIPAddress
", argv[0]);  
        exit(1);  
    }  

// 设置一个socket地址结构client_addr, 代表客户机的internet地址和端口  
    struct sockaddr_in client_addr;  
    bzero(&client_addr, sizeof(client_addr));  
    client_addr.sin_family = AF_INET; // internet协议族  
    client_addr.sin_addr.s_addr = htons(INADDR_ANY); // INADDR_ANY表示自动获取本机地址  
    client_addr.sin_port = htons(0); // auto allocated, 让系统自动分配一个空闲端口  

// 创建用于internet的流协议(TCP)类型socket，用client_socket代表客户端socket  
    int client_socket = socket(AF_INET, SOCK_STREAM, 0);  
    if (client_socket < 0)  
    {  
        printf("Create Socket Failed!
");  
        exit(1);  
    }  

// 把客户端的socket和客户端的socket地址结构绑定   
    if (bind(client_socket, (struct sockaddr*)&client_addr, sizeof(client_addr)))  
    {  
        printf("Client Bind Port Failed!
");  
        exit(1);  
    }  

// 设置一个socket地址结构server_addr,代表服务器的internet地址和端口  
    struct sockaddr_in  server_addr;  
    bzero(&server_addr, sizeof(server_addr));  
    server_addr.sin_family = AF_INET;  

// 服务器的IP地址来自程序的参数   
    if (inet_aton(argv[1], &server_addr.sin_addr) == 0)  
    {  
        printf("Server IP Address Error!
");  
        exit(1);  
    }                                                                                                               
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);  
    socklen_t server_addr_length = sizeof(server_addr);  
    // 向服务器发起连接请求，连接成功后client_socket代表客户端和服务器端的一个socket连接  
    if (connect(client_socket, (struct sockaddr*)&server_addr, server_addr_length) < 0)  
    {  
        printf("Can Not Connect To %s!
", argv[1]);  
        exit(1);  
    }  

    char file_name[FILE_NAME_MAX_SIZE + 1];  
    bzero(file_name, sizeof(file_name));  
    printf("Please Input File Name.	");  
    scanf("%s", file_name);  
    if((fp = fopen(file_name,"r"))==NULL)
    {
         printf("Failure to open %s
",file_name);
         exit(0);
    }
    
    char buffer[BUFFER_SIZE];  
    bzero(buffer, sizeof(buffer));  
    strcpy(buffer,file_name);
    if(send(client_socket,buffer,BUFFER_SIZE,0)==-1)
    {
        printf("发送文件名失败
");
    }
    char ch;
    int i=0;
    while((ch=fgetc(fp))!=EOF)
    {
        buffer[i++]=ch;
        if(i>=BUFFER_SIZE)
        {
            if((send(client_socket, buffer, BUFFER_SIZE, 0))==-1)
            {
                printf("发送文件失败
");
            }
            bzero(buffer, sizeof(buffer));
            i=0;
        }
    }
    if(i<BUFFER_SIZE)
    {
        if((send(client_socket, buffer, i, 0))==-1)
        {
            printf("发送文件失败
");
        }
    }
    printf("发送%s完毕
",file_name);
    mywc(file_name,1);
     mywc(file_name,2);
    // 向服务器发送buffer中的数据，此时buffer中存放的是客户端需要接收的文件 
    //以下接收服务器发来的单词个数
    bzero(buffer, sizeof(buffer));
//  int length = 0;  
/*  int length = recv(client_socket, buffer, sizeof(buffer), 0);
      
        if (length < 0)  
        {  
            printf("Recieve Data From Server %s Failed!
", argv[1]);   
        }  
        else
        {
        printf("Recieve words number %c From Server[%s] Finished!
",buffer[0],argv[1]);

        }
        bzero(buffer, BUFFER_SIZE);  */
// 传输完毕，关闭socket   
    
    fclose(fp);  
    close(client_socket);  
    return 0;  

}  
 int mywc(char file_name[],int choose)
  {
       FILE *fp;
       char ch;
        int flag=0,num=0;
        // int choose;
        //  printf("统计单词个数还是实现“wc -w”?(1or2)
");
          // scanf("%d",&choose);
            if((fp = fopen(file_name,"r"))==NULL)
             {
                  printf("Failure to open %s
",file_name);
                   exit(0);
                }
             
                  if(choose==1)
                   {
                    while((ch=fgetc(fp))!=EOF)
                     {
                          if(ch==' ' || ch=='
' || ch=='	' ||  ch=='!' || ch=='?' || ch=='"' || ch=='.' || ch== '\,' || ch==':' || ch=='(' || ch==')' || ch==';'     || ch=='-')
                          {
                          flag=0;
                          }
                          else
                          {
                          if(flag==0)
                          {
                          flag=1;
                          num++;
                          }
                          
                          }

                    }

                }
                else if(choose==2)
                {
                    while((ch=fgetc(fp))!=EOF)
                    {
                        if(ch==' ' || ch=='
' || ch=='	' || ch=='
')
                        flag=0;
                        else
                        {
                            if(flag==0)
                            {
                                flag=1;
                                num++;
                            }
                        }
                    }
                }
                printf("单词个数为：%d_用方式%d计算
",num,choose);
                fclose(fp);
                return num;
}


#include<netinet/in.h>   
#include<sys/types.h>   
#include<sys/socket.h>   
#include<stdio.h>   
#include<stdlib.h>   
#include<string.h>   
#include<pthread.h>  
#define HELLO_WORLD_SERVER_PORT    155312  
#define LENGTH_OF_LISTEN_QUEUE     20  
#define BUFFER_SIZE                1024  
#define FILE_NAME_MAX_SIZE         512  
void *process_client(void *new_server_socket);
int mywc(char file_name[])
{
    char ch;
    int flag=0,num=0;
    int choose;
    FILE *fp;
    printf("统计单词个数还是实现“wc -w”?(1or2)
");
    scanf("%d",&choose);
    if((fp = fopen(file_name,"r"))==NULL)
    {
        printf("Failure to open %s
",file_name);
        exit(0);
    }

    if(choose==1)
    {
    while((ch=fgetc(fp))!=EOF)
    {
        if(ch==' ' || ch=='
' || ch=='	' ||  ch=='!' || ch=='?' || ch=='"' || ch=='.' || ch== '\,' || ch==':' || ch=='(' || ch==')' || ch==';' || ch=='-')
        {
            flag=0;
        }
        else
        {
            if(flag==0)
            {
                flag=1;
                num++;
            }

        }
                   
    }

    }
    else if(choose==2)
    {
        while((ch=fgetc(fp))!=EOF)
        {
            if(ch==' ' || ch=='
' || ch=='	' || ch=='
')
                flag=0;
            else
            {
                if(flag==0)
                {
                    flag=1;
                    num++;
                }
            }
        }
    }
    printf("单词个数为：%d
",num);
    fclose(fp);
    return num;
}
int main(int argc, char **argv)  
{  
// set socket's address information   
// 设置一个socket地址结构server_addr,代表服务器internet的地址和端口  
    struct sockaddr_in   server_addr;  
    bzero(&server_addr, sizeof(server_addr));  
    server_addr.sin_family = AF_INET;  
    server_addr.sin_addr.s_addr = htons(INADDR_ANY);  
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);  
// create a stream socket   
// 创建用于internet的流协议(TCP)socket，用server_socket代表服务器向客户端提供服务的接口  
    int server_socket = socket(PF_INET, SOCK_STREAM, 0);  
    if (server_socket < 0)  
    {  
        printf("Create Socket Failed!
");  
        exit(1);  
    }  

// 把socket和socket地址结构绑定   
    if (bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)))  
    {  
        printf("Server Bind Port: %d Failed!
", HELLO_WORLD_SERVER_PORT);  
        exit(1);  
    }  

// server_socket用于监听   
    if (listen(server_socket, LENGTH_OF_LISTEN_QUEUE))  
    {  
        printf("Server Listen Failed!
");  
        exit(1);  
    }  
// 服务器端一直运行用以持续为客户端提供服务   
      
    while(1)
    {
// 定义客户端的socket地址结构client_addr，当收到来自客户端的请求后，调用accept  
// 接受此请求，同时将client端的地址和端口等信息写入client_addr中  
        struct sockaddr_in client_addr;  
        socklen_t length = sizeof(client_addr);  

// 接受一个从client端到达server端的连接请求,将客户端的信息保存在client_addr中  
// 如果没有连接请求，则一直等待直到有连接请求为止，这是accept函数的特性，可以  
// 用select()来实现超时检测   
// accpet返回一个新的socket,这个socket用来与此次连接到server的client进行通信  
// 这里的new_server_socket代表了这个通信通道  
        int new_server_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);  
        printf("连接到客户端
");
        if (new_server_socket < 0)  
        {  
            printf("Server Accept Failed!
");  
              
        }
        //添加进程相关代码
        pthread_t pid;
        if(pthread_create(&pid, NULL, process_client,(void *) &new_server_socket) < 0){
              printf("pthread_create error
");
        }
        
    }
//  close(server_socket);
}
void *process_client(void *new_server_socket)
{
        int sockid=*(int *)new_server_socket;
        FILE *fp;
        //接受来自客户端的文件
        char buffer[BUFFER_SIZE]; 
        char file_name[FILE_NAME_MAX_SIZE];
        bzero(buffer, sizeof(buffer));  
        int length=0;
        if(recv(sockid,buffer,BUFFER_SIZE, 0)==-1)
        {
            printf("接受文件名%s失败
",buffer);
        }
        strcpy(file_name,buffer);
        strcat(file_name,"-server");
        if((fp = fopen(file_name,"w"))==NULL)
        {
            printf("Failure to open %s
",file_name);
            exit(0);
        }
        while( length = recv(sockid, buffer, BUFFER_SIZE, 0))
        {
            if(length<0)
            {
                printf("接受文件出错
");
                exit(0);
            }
            
            if(fwrite(buffer,sizeof(char),length,fp)<length)
            {
                printf("写文件失败
");
            }
            bzero(buffer, BUFFER_SIZE);
        }
        fclose(fp);
        printf("接受文件完毕
");
        int number=0;
        number=mywc(file_name);
        bzero(buffer, BUFFER_SIZE);  
        buffer[0]=number+48;
// 发送buffer中的字符串到new_server_socket,实际上就是发送给客户端  
        /*if (send(new_server_socket, buffer, sizeof(buffer), 0) < 0)  
        {  
            printf("Send number Failed!
");  
             
        }  
        printf("发送单词个数完毕
");*/
        bzero(buffer, sizeof(buffer));  
        
//      fclose(fp);  
        printf("File Transfer Finished!
");    
        close(new_server_socket);  
} 

　　client.c

#include <stdio.h>
#include <fcntl.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#define PORT 165222
#define BUFF_SIZE 1024
#define LISTEN_SIZE 20
typedef struct{
    char type;
    char data[BUFF_SIZE];
}m_package;

int main(){
    //创建连接
    int sock_fd = connect_tcp("127.0.0.1", PORT);
    if(-1 == sock_fd)
        return -1;

    m_package pac;
    int fd, cur = 0, count = 0;
    long filesize = 0;
    while(1){
        //打开文件
        memset(&pac, 0, sizeof(pac));
        pac.type = 1;
        // strcpy(pac.data, "/home/SKZH/a.txt");
        scanf("%s", pac.data);
        //获取文件信息
        struct stat sfile;
        stat(pac.data, &sfile );
        filesize = sfile.st_size;
        time_t t;
        long begin = time(&t);
        cur = count = 0;

        fd = open(pac.data, O_RDONLY);
        if(-1 == fd){
            printf("file open error
");
            continue;
        }
        //读取文件并发送
        //发送文件名
        strcpy(pac.data, strrchr(pac.data, '/') + 1);
        write(sock_fd, &pac, sizeof(pac));
        memset(&pac, 0, sizeof(pac));

        //发送文件长度
        pac.type = 4;
        sprintf(pac.data,"%ld",filesize);
        write(sock_fd, &pac, sizeof(pac));
        memset(&pac, 0, sizeof(pac));

        int read_len = 0;
        while((read_len = read(fd, pac.data, BUFF_SIZE)) > 0){
            pac.type = 2;
            write(sock_fd, &pac, sizeof(pac));
            memset(&pac, 0, sizeof(pac));
            cur += read_len;
            if(count++ % 5000 == 0){
                count = 0;
                printf("send to server : %.1lf\%
", cur * 100.0 / filesize);
            }
        }

        //发送结束标记
        memset(&pac, 3, sizeof(pac));
        write(sock_fd, &pac, BUFF_SIZE + 1);
        close(fd);

        printf("send to server : 100.0\%
");
        printf("file size : %d B
", filesize);
        printf("time : %ld ms
", time(&t) - begin);
        printf("send file success
");
        printf("------------------------
");
    }
    close(sock_fd);
}
int connectsock(char* server_ip, int server_port, int type){
    int sock_fd = socket(AF_INET, type, 0);
    if(-1 == sock_fd){
        printf("create socket error
");
        return -1;
    }

    struct sockaddr_in server_addr;
    //设置服务器地址
    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);
    inet_pton(AF_INET, server_ip, &server_addr.sin_addr);

    //连接服务器
    if(-1 == connect(sock_fd, (struct sockaddr*)&server_addr, sizeof(struct sockaddr_in))){
        printf("connect server error
");
        return -1;
    }

    printf("connect server success
");
    return sock_fd;
}

int connect_tcp(char* server_ip, int server_port){
    return connectsock(server_ip, server_port, SOCK_STREAM);
}

int connect_udp(char* server_ip, int server_port){
    return connectsock(server_ip, server_port, SOCK_DGRAM);
}

　　

运行截图