//homework??ftp?server
//wgt?2011-2-27?modified?at?8-27


#include?“ftp.h“
#include?

int?delspace（char?*str）
{
????char?*p?=?str;
????if?（str?==?NULL）
????????return?-1;

????while（?*p?==?‘?‘）
????????++p;

????strcpy（str?p）;
????return?0;
}

//return?value:?length?of?cmd?string
int?getcmdstr（const?char?*src?char?*dest?int?destlen）??
{
????const?char?*p?=?NULL;
????int?i?=?0;

????if?（src?==?NULL?||?dest?==?NULL）
????????return?-1;

????p?=?src;
????while（（*p?!=?‘?‘）?&&?（*p?!=?‘\r‘）?&&?（*p?!=?‘\0‘）?&&?（i?????????dest[i++]?=?*p++;
????dest[i]?=?‘\0‘;

????return?i;
}

int?cmdparse（char?*src?int?*cmdlen）?
{
????int?len?=?-1;
????char?*p?=?NULL;
????char?cmdstr[BUF_LEN]?=?{0};??//cmdstr[]?is?ONLY?command?WITHOUT?argument

????if?（src?==?NULL?||?cmdlen?==?NULL）
????????return?-1;
????????
//????delspace（src）;??//delete?lead?space?char?and?command?argument
????*cmdlen?=?getcmdstr（src?cmdstr?BUF_LEN）;
????if（-1?==?*cmdlen）????
????????return?-1;??

????len?=?strlen（src）;
????p?=?src;
????if?（strcmp（cmdstr?“AUTH“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?AUTH;
????}else?if?（?strcmp（cmdstr?“USER“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?USER;
????}else?if?（strcmp（cmdstr?“PASS“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?PASS;
????}else?if?（strcmp（cmdstr?“SYST“）?==?0?
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?SYST;
????}else?if?（strcmp（cmdstr?“FEAT“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?FEAT;
????}else?if?（strcmp（cmdstr?“TYPE“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?MODE;
?????}else?if?（strcmp（cmdstr?“SIZE“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?SIZE;
????}else?if?（strcmp（cmdstr?“REST“）?==?0
????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?REST;
????}else?if?（strcmp（cmdstr?“PASV“）?==?0?
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?PASV;
????}else?if?（strcmp（cmdstr?“LIST“）?==?0?
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?LIST;
????}else?if?（strcmp（cmdstr?“NLST“）?==?0?
????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{?
????????return?NLST;
????}else?if（?strcmp（cmdstr?“STOR“）?==?0?
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?STOR;
????}else?if（?strcmp（cmdstr?“CWD“）?==?0?
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0?）{
????????return?CWD;
????}else?if（?strcmp（cmdstr?“DELE“）?==?0
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?DELE;
????}else?if（?strcmp（cmdstr?“PORT“）?==?0??
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?PORT;
????}else?if（?strcmp（cmdstr?“RETR“）?==?0
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?RETR;
????}else?if（?strcmp（cmdstr?“PWD“）?==?0
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?PWD;
????}else?if?（strcmp（cmdstr?“XPWD“）?==?0
????????????&&?strcmp（p+len?-2?“\r\n“）?==?0）{
????????return?XPWD;
????}else?if（?strcmp（

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-06-08?14:05??my_ftpserver_good\
?????文件????????3915??2011-08-28?13:14??my_ftpserver_good\cmd.txt
?????文件????????3127??2013-06-08?16:52??my_ftpserver_good\cmdparse.c
?????文件????????1771??2013-06-08?16:52??my_ftpserver_good\ftp.h
?????文件?????????716??2011-08-26?16:06??my_ftpserver_good\Makefile
?????文件???????27719??2013-06-08?16:49??my_ftpserver_good\server.c