client2.c

實現一套網路TCP/IP的嵌入式系統測試程式...希望可以在多平台下運行

#include <unistd.h> 
#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 
#include <sys/socket.h> 
#include <netinet/in.h> 

#include<sys/types.h>
#include<dirent.h>

int main(){ 
struct sockaddr_in addr_svr; 
  
int sockfd; 

char msg[20];
char account[20];
char password[20];
char folderMSG[100];
char folder[100];
char fileMSG[100];
char file[100];
char content[100];


// Set Server Address 
memset(&addr_svr, 0, sizeof(addr_svr)); 
addr_svr.sin_family= AF_INET; 
addr_svr.sin_port= htons(80); 
addr_svr.sin_addr.s_addr = inet_addr("192.168.0.204"); 
 
// Create Client Socket 
sockfd = socket(AF_INET, SOCK_STREAM, 0); 
  
if(sockfd == -1) { 
  printf("Error: socket()\n"); 
  exit(1); 
} 
 
// Connect to Server 
if(connect(sockfd,(struct sockaddr *)&addr_svr, sizeof(addr_svr)) == -1){ 
  printf("Error: connect()\n"); 
  exit(1); 
}

while(msg!="ok")
{
                
      printf("Enter your FTP account.\n");
      scanf("%s", account);
      write(sockfd, account, strlen(account)+1);
      read(sockfd, msg, sizeof(msg));
      
      if(msg=="ok")
      {
              printf("Account Correct!\nEnter your password.\n");      
              scanf("%s", password);
              exit(1);
      }
      else
              printf("Account doesn't exist!\n");              
}

read(sockfd, folderMSG, strlen(folderMSG)+1);
printf("%s\nWhich folder?\n", folderMSG);
write(sockfd, folder, strlen(folder)+1);
read(sockfd, fileMSG, strlen(fileMSG)+1);
printf("%s\nWhich file?\n", fileMSG);
write(sockfd, file, strlen(file)+1);

DIR *dir = opendir("/etc/rc.d/ps3");
FILE *fopen("/etc/rc.d/ps3/ps3.txt", "w");
read(sockfd, content, strlen(content)+1);
fputs(content, fopen);



// Close socket 
close(sockfd); 
 
return 0;
}