static void do_nlst(session_t *sess)
{
if(get_transfer_fd(sess) == 0)
return;
ftp_reply(sess, FTP_DATACONN, "Here comes the directory listing.");
list_common(sess, 0);
close(sess->data_fd);
sess->data_fd = -1;
ftp_reply(sess, FTP_TRANSFEROK, "Directory send OK.");
}
static void do_list(session_t *sess)
{
if(get_transfer_fd(sess) == 0)
return;
ftp_reply(sess, FTP_DATACONN, "Here comes the directory listing.");
//transfer list
list_common(sess, 1);
//client will still wait the data from server if the fd do not closed
close(sess->data_fd);
sess->data_fd = -1;
ftp_reply(sess, FTP_TRANSFEROK, "Directory send OK.");
}
/**
*do_nlst - 处理列出目录列表命令，可用windows登录，命令短清单
*@sess：会话结构体
*/
void ftpproto::do_nlst(session_t* sess)
{
//创建数据连接,主动用connect，被动用accept
if (get_transfer_fd(sess))//连接失败
{
LCWFTPD_LOG(DEBUG,"get_transfer_fd(sess)");
return;
}
//150响应
ftp_reply(sess,FTP_DATACONN,"Here comes the directory listing.");
//传输列表
list_common(sess,0);//0表示短清单
//关闭数据链接套接字,客户端貌似是通过判断套接字关闭从而判断数据是否接收完毕
close(sess->data_fd);
sess->data_fd = -1;
//226响应
ftp_reply(sess,FTP_TRANSFEROK,"Directory send OK.");
}
int main()
{
// Person ids starts at 1
aid = 1;
// A linked list for storing persons
list people;
new_list(&people, sizeof(person));
FILE *commands = fopen(commands_file, "r");
if(NULL == commands) {
fprintf(stderr, "Can't open commands file for reading. Please make sure it exists!\n");
return 1;
}
// One line from commands file
char *line;
// One of the commands
char command;
// Rest of the command
char rcommand[256];
// Variable for error handling
int rc;
while((line = read_line(commands)) != NULL) {
sscanf(line, "%c %255[^\n]", &command, rcommand);
switch(command) {
case 'P':
add_person_to_list(rcommand, &people);
break;
case 'F':
rc = add_friends(rcommand, &people);
if(rc == -1) {
fprintf(stderr, "You cannot add yourself as your friend!\n");
}
break;
case 'R':
rc = remove_friends(rcommand, &people);
break;
case 'B':
block_user(rcommand, &people);
break;
case 'U':
unblock_user(rcommand, &people);
break;
case 'S':
list_friends_same_university(rcommand, &people);
break;
case 'A':
list_all_friends(rcommand, &people);
break;
case 'C':
list_common(rcommand, &people);
break;
case 'M':
message(rcommand, &people);
break;
default:
break;
}
memset(rcommand, 0, sizeof(rcommand));
// Free the line, since our work with it is done.
free(line);
}
// CLEANUP
element *current;
while(NULL != people.head) {
current = people.head;
people.head = current->next;
person *p = current->data;
free(p->name);
free(p->university);
element *friend;
while(NULL != p->friend_list.head) {
friend = p->friend_list.head;
p->friend_list.head = friend->next;
free(friend);
}
free(current->data);
free(current);
}
// Close our file handle
fclose(commands);
return 0;
}
