#编辑vsftpd.conf
echo > /etc/vsftpd/vsftpd.conf
cat > /etc/vsftpd/vsftpd.conf << EOFF
# Example config file /etc/vsftpd/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#设定不允许匿名访问
# Uncomment this to allow local users to log in.
local_enable=YES
#设定本地用户可以访问。注意：主要是为虚拟宿主用户，如果该项目设定为NO那么所有虚拟用户将无法访问。
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#设定可以进行写操作。
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#设定上传后文件的权限掩码。
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
anon_upload_enable=NO
#禁止匿名用户上传。
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
anon_mkdir_write_enable=NO
#禁止匿名用户建立目录。
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#设定开启目录标语功能。
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
xferlog_enable=YES
#设定开启日志记录功能。
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#设定端口20进行数据连接。
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
chown_uploads=NO
#设定禁止上传文件更改宿主。
#chown_username=whoever
#
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
xferlog_file=/var/log/vsftpd.log
#设定Vsftpd的服务日志保存路径。
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file, YES to xferlog_file
xferlog_std_format=YES
#设定日志使用标准的记录格式。
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#设定空闲连接超时时间，这里使用默认，单位秒。
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#设定单次最大连续传输时间，这里使用默认。将具体数值留给每个具体用户具体指定，当然如果不指定的话，还是使用这里的默认值120，单位秒。
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#设定支持异步传输功能。
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#设定支持ASCII模式的上传和下载功能。
# You may fully customise the login banner string:
ftpd_banner=Administrator Jason.Pan .
#设定Vsftpd的登陆标语。
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd/banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_local_user=YES
#禁止本地用户登出自己的FTP主目录
#chroot_list_enable=YES
#禁止用户登出自己的FTP主目录。
# (default follows)
#chroot_list_file=/etc/vsftpd/chroot_list
#在chroot_list文件中可设置部分特殊用户能够登出自己的FTP主目录
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
ls_recurse_enable=NO
#禁止用户登陆FTP后使用"ls -R"的命令。该命令会对服务器性能造成巨大开销。如果该项被允许，那么挡多用户同时使用该命令时将会对该服务器造成威胁。
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=YES
#设定该Vsftpd服务工作在StandAlone模式下。
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd with two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES
if [ $# != 2 ];then
echo "Useage: $0 {create|disable|enable|passwd|delete} {username}" >&2
exit 1
fi
function check_username_exist() {
#Check if virtual user already exist
USERCOUNT=$(sed -n 'p;n' $USERFILE | grep -w $USERNAME | wc -l)
if [ $USERCOUNT -ne 0 ];then
echo "User $USERNAME ALREADY exist!" && exit
fi
}
check_username_notexist() {
#Check if virtual user not exist
USERCOUNT=$(sed -n 'p;n' $USERFILE | grep -w $USERNAME | wc -l)
if [ $USERCOUNT -eq 0 ];then
echo "User $USERNAME NOT exist!" && exit
fi
}
get_password() {
#Get the password
echo -n "Input password:"
read password
#Check if password is empty
if [ -z "$password" ];then
echo "Empty password!!" && exit
fi
}
case "$1" in
'create' )
check_username_exist
get_password
#Write the username and password to $USERFILE
echo $USERNAME >> $USERFILE
echo $password >> $USERFILE
#Generate the virtual user db
db_load -T -t hash -f $USERFILE $USERDB
#Create the configure file of virtual user
cp $TMPCONF $CONFBASE/$USERNAME
#Replace the home directory name of virtual user
sed -i "s/virtuser/$USERNAME/g" $CONFBASE/$USERNAME
#Create the home directory of virtual user
mkdir $FTPBASE/$USERNAME
#Change the owner of home directory to OS user $FTPHOST
chown -R $FTPHOST:$FTPHOST $FTPBASE/$USERNAME
;;
'disable' )
check_username_exist
#Change the owner of home directory from $FTPHOST to root
chown root:root $FTPBASE/$USERNAME
#Change the permissions of home directory to read-only for root
chmod 700 $FTPBASE/$USERNAME
;;
'enable' )
check_username_exist
#Change the owner of home directory from root to $FTPHOST to root
chown $FTPHOST:$FTPHOST $FTPBASE/$USERNAME
#Change the permissions of home directory to 775 for $FTPHOST
chmod 775 $FTPBASE/$USERNAME
;;
'delete' )
check_username_notexist
#Get the row numbers of username and password of virtual user
ROWNUMBER=$(cat -n $USERFILE | sed -n 'p;n' | grep -w $USERNAME | awk '{print $1}' | head -n 1)
#Delete the username and password of virtual user from $USERFILE
sed -i "${ROWNUMBER}d" $USERFILE
sed -i "${ROWNUMBER}d" $USERFILE
#Generate the virtual user db
db_load -T -t hash -f $USERFILE $USERDB
#Delete the configure file of virtual user
rm -f $CONFBASE/$USERNAME
#Rename the home directory name of virtual user
mv $FTPBASE/$USERNAME $FTPBASE/$USERNAME.deleted
;;
'passwd' )
check_username_notexist
get_password
#Get the row numbers of username and password of virtual user
ROWNUMBER=$(cat -n $USERFILE | sed -n 'p;n' | grep -w $USERNAME | awk '{print $1}' | head -n 1)
PASSWORDNUMBER=$(expr $ROWNUMBER + 1)
sed -i "${PASSWORDNUMBER}d" $USERFILE
sed -i "${ROWNUMBER}a $password" $USERFILE
#Generate the virtual user db
db_load -T -t hash -f $USERFILE $USERDB
;;
*)
echo "Useage: $0 {create|disable|enable|passwd|delete} {username}" >&2
exit 1
;;
esac
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