基于socket的ftp实现(一)
服务器端的实现：#include
#include
#include //sockaddr_in等结构的定义
#include //addrinfo等结构的定义
#include
#include
#include
#include
#include
#include
#include
#define TRUE 1
#define LISTEN_PORT 3499
#define dataLen 1024
char currentDirPath;
char currentDirName;
char help[]="get get a file from server\n\
put upload a file to server\n\
pwd display the current directory of server\n\
dir display the files in the current directory of server\n\
cd change the directory of server\n\
? display the whole command which equals 'help'\n\
quit return\n";
char *getDirName(char *dirPathName);
void cmd_pwd(int sock);
void cmd_dir(int sock);
void cmd_cd(int sock,char *dirName);
void cmd_cdback(int sock);
void cmd_help(int sock);
void cmd_get(int sock,char*fileName);
void cmd_put(int sock,char *fileName);
int main(int argc,char *argv[])
{
int sock,sockmsg, length, lengthmsg;
char client_cmd , cmd_arg;
struct sockaddr_in server;
struct sockaddr_in servermsg;
int datasock, msgsock;
pid_t child;
// int datasock; //data socket
int rval;
sock=socket(AF_INET,SOCK_STREAM,0);//创建流式套接字
sockmsg=socket(AF_INET,SOCK_STREAM,0);
if (sock
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