//
//??THFTPAPI.c
//??MyFTP
//
//??Created?by?TanHao?on?13-6-6.
//??Copyright?（c）?2013年?http://www.tanhao.me.?All?rights?reserved.
//

#include?“THFTPAPI.h“

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

//創建一個socket并返回
int?socket_connect（char?*hostint?port）
{
????struct?sockaddr_in?address;
????int?s?opvalue;
????socklen_t?slen;
????
????opvalue?=?8;
????slen?=?sizeof（opvalue）;
????memset（&address?0?sizeof（address））;
????
????if?（（s?=?socket（AF_INET?SOCK_STREAM?0））?????????setsockopt（s?IPPROTO_IP?IP_TOS?&opvalue?slen）?????????return?-1;
????
????//設置接收和發送超時
????struct?timeval?timeo?=?{15?0};
????setsockopt（s?SOL_SOCKET?SO_SNDTIMEO?&timeo?sizeof（timeo））;
????setsockopt（s?SOL_SOCKET?SO_RCVTIMEO?&timeo?sizeof（timeo））;
????
????address.sin_family?=?AF_INET;
????address.sin_port?=?htons（（unsigned?short）port）;
????
????struct?hostent*?server?=?gethostbyname（host）;
????if?（!server）
????????return?-1;
????
????memcpy（&address.sin_addr.s_addr?server->h_addr?server->h_length）;
????
????if?（connect（s?（struct?sockaddr*）?&address?sizeof（address））?==?-1）
????????return?-1;
????
????return?s;
}

//連接到一個ftp的服務器，返回socket
int?connect_server（?char?*host?int?port?）
{????
????int???????ctrl_sock;
????char??????buf[512];
????int???????result;
????ssize_t???len;
????
????ctrl_sock?=?socket_connect（host?port）;
????if?（ctrl_sock?==?-1）?{
????????return?-1;
????}
????
????len?=?recv（?ctrl_sock?buf?512?0?）;
????buf[len]?=?0;
????sscanf（?buf?“%d“?&result?）;
????if?（?result?!=?220?）?{
????????close（?ctrl_sock?）;
????????return?-1;
????}
????
????return?ctrl_sock;
}

//發送命令返回結果
int?ftp_sendcmd_re（?int?sock?char?*cmd?void?*re_buf?ssize_t?*len）
{
????char????????buf[512];
????ssize_t?????r_len;
????
????if?（?send（?sock?cmd?strlen（cmd）?0?）?==?-1?）
????????return?-1;
????
????r_len?=?recv（?sock?buf?512?0?）;
????if?（?r_len?????buf[r_len]?=?0;
????
????if?（len?!=?NULL）?*len?=?r_len;
????if?（re_buf?!=?NULL）?sprintf（re_buf?“%s“?buf）;
????
????return?0;
}

//發送命令返回編號
int?ftp_sendcmd（?int?sock?char?*cmd?）
{
????char?????buf[512];
????int??????result;
????ssize_t??len;
????
????result?=?ftp_sendcmd_re（sock?cmd?buf?&len）;
????if?（result?==?0）
????{
????????sscanf（?buf?“%d“?&result?）;
????}
????
????return?result;
}

//登錄ftp服務器
int?login_server（?int?sock?char?*user?char?*pwd?）
{
????char????buf[128];
????int?????result;
????
????sprintf（?buf?“USER?%s\r\n“?user?）;
????result?=?ftp_sendcmd（?sock?buf?）;
????if?（?result?==?230?）?return?0;
????else?if?（?result?==?331?）?{
????????sprintf（?buf?“PASS?%s\r\n“?pwd?）;
????????if?（?ftp_sendcmd（?sock?buf?）?!=?230?）?return?-1;
????????return?0;
????}
????else
????????return?-1;
}

int?create_datasock（?int?ctrl_sock?）
{
????int?????lsn_sock;
????int?????port;
????int???

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????12198??2013-07-19?09:48??THFTPAPI.c
?????目錄???????????0??2013-07-19?09:49??__MACOSX\
?????文件?????????171??2013-07-19?09:48??__MACOSX\._THFTPAPI.c
?????文件?????????998??2013-06-19?14:05??THFTPAPI.h
?????文件?????????171??2013-06-19?14:05??__MACOSX\._THFTPAPI.h