FTP 1.0

 1 客户端代码：
 2 头文件
 3 #ifndef __CLIENT_COMMON__
 4 #define __CLIENT_COMMON__
 5 
 6 #include<stdio.h>
 7 #include<stdlib.h>
 8 #include<string.h>
 9 
10 #include<sys/types.h>
11 #include<sys/socket.h>
12 
13 #include<netinet/in.h>
14 #include<arpa/inet.h>
15 
16 #include<unistd.h>
17 #include<fcntl.h>
18 
19 #define SIZE 1024
20 #define DOWN_PATH "/home/luolizhi/Downloads"
21 
22 
23 #endif
24 
25 
26 client main
27 
28 #include"client_common.h"
29 
30 int main(int argc, char* argv[])    //serverip port
31 {
32     if(argc != 3)
33     {
34         printf("EXE IP PORT");
35         exit(1);
36     }
37 
38     //socket
39     int clientfd = socket(AF_INET,SOCK_STREAM,0);
40     if(clientfd == -1)
41     {
42         perror("clientfd");
43         exit(1);
44     }
45     
46     struct sockaddr_in serveraddr;
47     serveraddr.sin_family = AF_INET;
48     serveraddr.sin_addr.s_addr = inet_addr(argv[1]);
49     serveraddr.sin_port = htons(atoi(argv[2]));
50 
51     if(-1 == connect(clientfd,(struct sockaddr*)&serveraddr,sizeof(struct sockaddr)))
52     {
53         perror("connect");
54         exit(1);
55     }
56     
57     //send
58     char send_buf[SIZE]="";
59     fgets(send_buf,sizeof(send_buf),stdin);
60     send(clientfd,send_buf,strlen(send_buf),0);
61 
62     //recv
63     /*
64     char FULL_PATH[SIZE]="";
65     sprintf(FULL_PATH,"%s/%s",DOWN_PATH,send_buf);
66     FULL_PATH[strlen(FULL_PATH)-1]=‘\0‘;
67 */
68     send_buf[strlen(send_buf)-1]=‘\0‘;
69     FILE* fp = fopen(send_buf,"w");
70 
71     char recv_buf[SIZE] = "";
72     recv(clientfd,recv_buf,sizeof(recv_buf)-1,0);
73     //printf("recv:%s\n",recv_buf);
74     fwrite(recv_buf,1,strlen(recv_buf),fp);
75     
76     fclose(fp);
77 
78 
79     close(clientfd);
80 
81 
82 
83 
84     return 0;
85 }

  1 服务器端代码：
  2 
  3 头文件
  4 #ifndef __SERVER_COMMON__
  5 #define __SERVER_COMMON__
  6 
  7 #include<stdio.h>
  8 #include<stdlib.h>
  9 #include<string.h>
 10                         //socket
 11 #include<sys/types.h>
 12 #include<sys/socket.h>
 13                         //inet
 14 #include<netinet/in.h>
 15 #include<arpa/inet.h>
 16                         //FILE
 17 #include<sys/types.h>
 18 #include<sys/stat.h>
 19 #include<fcntl.h>
 20 
 21 #define DOWN_PATH "/home/luolizhi/Downloads"
 22 #define SIZE 1024
 23 
 24 
 25 void recvn(int sfd,int len);
 26 void sendn(int sfd,int len);
 27 
 28 #endif
 29 
 30 
 31 main 程序
 32 #include"server_common.h"
 33 
 34 int main(int argc, char* argv[])    //ip port
 35 {
 36     if(argc != 3)
 37     {
 38         printf("EXE IP PORT\n");
 39         exit(1);
 40     }
 41     //socket
 42     int serverfd = socket(AF_INET,SOCK_STREAM,0);
 43     if(serverfd == -1)
 44     {
 45         perror("socket");
 46         exit(1);
 47     }
 48 
 49     //bind
 50     struct sockaddr_in serveraddr;
 51     serveraddr.sin_family = AF_INET;
 52     serveraddr.sin_addr.s_addr = inet_addr(argv[1]);
 53     serveraddr.sin_port = htons(atoi(argv[2]));
 54 
 55     if(-1 == bind(serverfd,(struct sockaddr*)&serveraddr,sizeof(struct sockaddr)))
 56     {
 57         perror("bind");
 58         exit(1);
 59     }
 60 
 61     //listen
 62     if(-1 == listen(serverfd,10))
 63     {
 64         perror("listen");
 65         exit(1);
 66     }
 67     
 68     //accept
 69     int clientfd;
 70     struct sockaddr_in clientaddr;
 71     socklen_t clientlen = sizeof(clientaddr);
 72 
 73     clientfd = accept(serverfd,(struct sockaddr*)&clientaddr,&clientlen);
 74     if(clientfd == -1)
 75     {
 76         perror("accept");
 77         exit(1);
 78     }
 79 
 80     printf("client: ip:%s,port:%d on\n",inet_ntoa(clientaddr.sin_addr),ntohs(clientaddr.sin_port));
 81 
 82     //recv
 83     char recv_buf[SIZE] = "";
 84     char FULL_PATH[SIZE] = "";
 85     
 86     recv(clientfd,recv_buf,sizeof(recv_buf)-1,0);
 87     
 88     sprintf(FULL_PATH,"%s/%s",DOWN_PATH,recv_buf);
 89     FULL_PATH[strlen(FULL_PATH)-1] = ‘\0‘;
 90     printf("download file:%s\n",FULL_PATH);
 91 
 92     //open file
 93     FILE* fp = fopen(FULL_PATH,"r");
 94     if(fp == NULL)
 95     {
 96         perror("fopen");
 97         exit(1);
 98     }
 99     
100     //read file
101     char send_buf[SIZE] = "";
102     size_t readn;
103     readn = fread(send_buf,1,sizeof(send_buf),fp);
104     printf("readn:%d\n",readn);
105 
106     //send
107     size_t sendn;
108     sendn = send(clientfd,send_buf,strlen(send_buf),0);
109     if(sendn == -1)
110     {
111         perror("sendn");
112         exit(1);
113     }
114 
115     printf("sendn:%d\n",sendn);
116 
117     close(clientfd);
118     close(serverfd);
119 
120     //while(1);
121     return 0;
122 }