Subject : How to Setup Anonymous FTP on a Solaris Machine?

Description :


The following steps, on setting up Anonymous FTP on a Solaris machine,
are copied from the 2.5 ftpd man page. It has been tested on 2.3, 2.4
AND 2.5.  Please note that if you use the ftpd setup script from the
2.3 or 2.4 man page there is an error  use this script instead.

First, add the following entry to the /etc/passwd file. In this case,
/export/ftp was chosen to be the anonymous ftp area, and the shell is
the non-existant file /nosuchshell. This prevents users from logging
in as the ftp user. Any of these variables may be changed at your
discretion:
       
  ftp:x:30000:30000:Anonymous FTP:/export/ftp:/nosuchshell
    
Second, add the following entry to /etc/shadow:
        
  ftp:NP:6445::::::

Finally, cut and paste the following script, and run it on the machine
that you are setting up as an anonymous FTP server:

#     The following is  a  shell  script  that  will  set  up  the
#     anonymous  ftp  area.   It  presumes that ftp accounts is set
#     up locally, as is suggested above.
#	This is a tested script from the Solaris 2.5 ftpd man page.
#	It has been tested on 2.3, 2.4, AND 2.5.
#
     #!/bin/sh
     # script to setup anonymous ftp area
     #
     # handle the optional command line argument
     case $# in

        # the default location for the anon ftp comes from the passwd file
        0) ftphome="`grep '^ftp:' /etc/passwd | cut -d: -f6`"
           ;;

        1) if [ "$1" = "start" ]; then
              ftphome="`grep '^ftp:' /etc/passwd | cut -d: -f6`"
           else
              ftphome=$1
           fi
           ;;

        *) echo "Usage: $0 [anon-ftp-root]"
           exit 1
           ;;
     esac

     if [ -z "${ftphome}" ]; then
        echo "$0: ftphome must be non-null"
        exit 2
     fi

     # This script assumes that ftphome is neither / nor /usr so ...
     if [ "${ftphome}" = "/" -o "${ftphome}" = "/usr" ]; then
        echo "$0: ftphome must not be / or /usr"
        exit 2
     fi

     # If ftphome does not exist but parent does, create ftphome
     if [ ! -d ${ftphome} ]; then
         # lack of -p below is intentional
         mkdir ${ftphome}
     fi
     echo Setting up anonymous ftp area ${ftphome}

     # Ensure that the /usr/bin directory exists
     if [ ! -d ${ftphome}/usr/bin ]; then
         mkdir -p ${ftphome}/usr/bin
     fi

     cp /usr/bin/ls ${ftphome}/usr/bin
     chmod 111 ${ftphome}/usr/bin/ls

     # Now set the ownership and modes to match the man page
     chown root ${ftphome}/usr/bin
     chmod 555 ${ftphome}/usr/bin

     # this may not be the right thing to do
     # but we need the bin -> usr/bin link
     if [ -r ${ftphome}/bin ]; then
         mv -f ${ftphome}/bin ${ftphome}/Obin
     fi
     ln -s usr/bin ${ftphome}

     # Ensure that the /usr/lib and /etc directories exist
     if [ ! -d ${ftphome}/usr/lib ]; then
         mkdir -p ${ftphome}/usr/lib
     fi
     if [ ! -d ${ftphome}/etc ]; then
         mkdir -p ${ftphome}/etc
     fi

     #Most of the following are needed for basic operation, except
     #for libnsl.so, nss_nis.so, libsocket.so, and straddr.so which are
     #needed to resolve NIS names.

     cp /usr/lib/ld.so /usr/lib/ld.so.1 ${ftphome}/usr/lib

     for lib in libc libdl libintl libw libnsl libsocket         nss_nis nss_nisplus nss_dns nss_files
     do
        cp /usr/lib/${lib}.so.1 ${ftphome}/usr/lib
        rm -f ${ftphome}/usr/lib/${lib}.so
        ln -s ./${lib}.so.1 ${ftphome}/usr/lib/${lib}.so
     done

     cp /usr/lib/straddr.so.2 ${ftphome}/usr/lib
     rm -f ${ftphome}/usr/lib/straddr.so
     ln -s ./straddr.so.2 ${ftphome}/usr/lib/straddr.so

     cp /etc/passwd /etc/group /etc/netconfig ${ftphome}/etc

     # Copy timezone database
     mkdir -p ${ftphome}/usr/share/lib/zoneinfo
     (cd ${ftphome}/usr/share/lib/zoneinfo
       (cd /usr/share/lib/zoneinfo; find . -print | cpio -o) | cpio -imdu
       find . -print | xargs chmod 555
       find . -print | xargs chown root
     )

     chmod 555 ${ftphome}/usr/lib/*
     chmod 444 ${ftphome}/etc/*

     # Now set the ownership and modes
     chown root ${ftphome}/usr/lib ${ftphome}/etc
     chmod 555 ${ftphome}/usr/lib ${ftphome}/etc

     # Ensure that the /dev directory exists
     if [ ! -d ${ftphome}/dev ]; then
         mkdir -p ${ftphome}/dev
     fi

     # make device nodes. ticotsord and udp are necessary for
     # 'ls' to resolve NIS names.

     for device in zero tcp udp ticotsord
     do
        line=`ls -lL /dev/${device} | sed -e 's/,//'`
        major=`echo $line | awk '{print $5}'`
        minor=`echo $line | awk '{print $6}'`
        rm -f ${ftphome}/dev/${device}
        mknod ${ftphome}/dev/${device} c ${major} ${minor}
     done

     chmod 666 ${ftphome}/dev/*

     ## Now set the ownership and modes
     chown root ${ftphome}/dev
     chmod 555 ${ftphome}/dev

     if [ ! -d ${ftphome}/pub ]; then
        mkdir -p ${ftphome}/pub
     fi
     chown ftp ${ftphome}/pub
     chmod 777 ${ftphome}/pub


You should be aware that this script has created ~ftp/pub with 777
(world-write) permissions. If you prefer more secure permissions,
execute a new chmod on ~ftp/pub after running this script.


Revision History

작성일자 : 96.08.30
작성자 : 이민호

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