FTP客户端和服务器源代码(C语言)实现

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1、课程设计：FTP的设计与实现/****************client.c****************/#include#include#include#pragmacomment(lib,"ws2_32.lib")#defineDEFAULT_PORT       2302#defineDEFAULT_BUFFER     2048#defineDEFAULT_MESSAGE    "Thisisatestoftheemergencybroadca

2、stingsystem"char szServerip[128],         //Servertoconnectto     szMessage[1024];       //Messagetosendtoseverint  iPort    =DEFAULT_PORT; //Portonservertoconnectto//DWORDdwCount  =DEFAULT_COUNT;//NumberoftimestosendmessageBOOL bSendOnly=FALSE;        //Senddata

3、only;don'treceiveintdirfun();intgetfun();intputfun();intpwdfun();intcdfun();intmdfun();intdelfun();intusafun(); voidusage(){   printf("usage:client[-p:x][-s:IP][-n:x][-o]");   printf("      -p:x     Remoteporttosendto");   printf("      -s:IP    Server'sIPa

4、ddressorhostname");   printf("      -n:x     Numberoftimestosendmessage");   printf("      -o       Sendmessagesonly;don'treceive");   ExitProcess(1);}voidValidateArgs(intargc,char**argv){   int               i;    for(i=1;i

5、0]=='-')

6、

7、(argv[i][0]=='/'))       {           switch(tolower(argv[i][1]))           {               case'p':       //Remoteport                   if(strlen(argv[i])>3)                       iPort=atoi(&argv[i][3]);                   break;               case's':

8、      //Server                   if(strlen(argv[i])>3)                       strcpy(szServerip,&argv[i][3]);                   break;               case'n':      //Numberoftimestosendmessage                   if(strlen(argv[i])>3)                       //dwCount=

9、atol(&argv[i][3]);                   break;               case'o':      //Onlysendmessage;don'treceive                   bSendOnly=TRUE;                   break;               default:                   usage();                   break;           }       }   }}in

10、tmain(intargc,char**argv){   WSADATA      wsd;   SOCKET       sClient;   char         szBuffer[DEFAULT_BUFFER];   int          ret;   //unsignedint          i;