ftp客户端ftpclient纯C语言winsock实现socket编程

ftp客户端ftpclient纯C语言winsock实现socket编程 /* *本程序是2009年计算机网络课程设计作品。 *本程序参考rfc959标准。能准确与遵守此标准的服务器进行信息交互。 *本人不保留任何版权。 *本程序仅供学习研究测试使用。因使用本程序所有或部分代码所产生的任何后果，本人均不负任何法律责任。 *2009年7月13日 */ #include #include #include /*system()*/ #include #pragma comment(lib,"ws2_32.lib") #define ONUM 512 #define MNUM 512 #define FNUM 512 #define pt struct host { char ip[20]; unsigned short port; }; SOCKET ts; fd_set readfds; struct timeval timeval; struct host host; char renum[4]; char ordertemp[ONUM]; char order[ONUM]; char ordercp[ONUM]; char mess[MNUM]; char file[FNUM]; char setpath[FNUM]; char setpathf[FNUM]; int i,door,r,sys,seti;/*i for;door switch;r receive num;sys system state;set set state*/ char *p;/*strtok*/ int printmess(); void input(char ordertemp[]); int ftp(); int user(); int pass(); int command(); int list(); SOCKET createDataSocket(); int set(); int retr(); int stor(); int stor() { char filename[256]; SOCKET ds; int wi; int r2,r3,r4,bsnum,brnum; FILE *fp=NULL; set(); memset(filename,'\0',256); memset(order,'\0',ONUM); for(i=5;i<=200&&ordercp[i]!='\0';i++)order[i-5]=ordercp[i]; strcpy(filename,setpathf); strcat(filename,"\\\\"); strcat(filename,order); memset(order,'\0',ONUM); strcpy(order,"type i\r\n");/*type i 二进制 type a ASCII*/ send(ts,order,strlen(order),0); switch(printmess()) { case 421:closesocket(ts);sys=0;return 421; case 530:sys=1;return -1; case 500: case 501: case 504: case 226:return -1; case 200:break; default:return -1; } ds=createDataSocket(); if(ds==-1)return -1; strcat(ordercp,"\r\n"); send(ts,ordercp,strlen(ordercp),0); switch(printmess()) { case 421:closesocket(ds);closesocket(ts);sys=0;return 421; case 532: case 530:closesocket(ds);sys=1;return -1; case 450: case 452: case 553: case 500: case 501:closesocket(ds);return -1; case 125: case 150:break; default:closesocket(ds);return -1; } fp=fopen(filename,"rb"); if(!fp){printf("read file fa