maildaemon
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上传日期:2007-01-04
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文件大小:2k
- #!/bin/sh
- #
- # maildaemon, fetchmail driver intended to be invoked hourly by cron.
- #
- # Script by Larry Fahnoe <fahnoe@kegworks.mn.org>, who writes:
- #
- # This is intended to support a standalone system (NeXTSTEP in this case)
- # which makes manual, on-demand PPP connections to the outside world. The
- # script is run as the target user from cron on an hourly basis. If it
- # finds a PPP link is up (it sees routes on a PPP interface), fetchmail is
- # invoked. If the link is not up, and the hour is in the list of hours that
- # connections should be made, the link is brought up and fetchmail is
- # invoked. The program or script used to bring up the link should return an
- # exit status which reflects whether the link actually came up.
- #
- # I wrote this because I wanted to be able to have control over the amount
- # of time spent connected to an ISP and yet still be able to poll for mail
- # at intervals that made sense to me. One limitation of this script is that
- # it does not take into account that an existing PPP link might be going to
- # a different ISP or network.
- #
- # You'll have to configure these
- USER=fahnoe # your name
- HOME=/Users/fahnoe # home directory (for the logfile)
- FORCEHOURS="05 09 13 17" # when to bring the link up if it's not already
- SERVER=mailserver.isp.com # mailserver host name
- # Link initialization and wrapup scripts (you may have to configure these)
- PPPUP="/usr/local/bin/pppup $SERVER"
- PPPDOWN=/usr/local/bin/pppdown
- PATH=/usr/local/bin:/bin:/usr/ucb:/usr/bin:/usr/etc
- export PATH USER HOME
- LOG=$HOME/log/maildaemon.log
- # get the mail, depends on $HOME/.fetchmailrc and $USER
- FETCHMAIL( ) {
- ( echo "`date` $SERVER"
- fetchmail $SERVER
- if [ $? -gt 1 ]
- then
- echo "`date` $SERVER (evil things happened in fetchmail)"
- fi
- ) >> $LOG 2>&1
- }
- # if the link is already up, check for mail.
- # if the hour is in FORCEHOURS, force the link up and check for mail.
- (netstat -rn | awk '{ print $6 }' | grep ppp[0-9] > /dev/null)
- if [ $? -eq 0 ]
- then
- FETCHMAIL
- else
- hour=`date | sed -e 's/:/ /g' | awk '{ print $4 }'`
- for x in $FORCEHOURS
- do
- if [ $hour = $x ]
- then
- $PPPUP
- if [ $? -eq 0 ]
- then
- FETCHMAIL
- $PPPDOWN
- else
- echo "`date` $SERVER (link establishment failure)" >> $LOG
- exit 1
- fi
- fi
- done
- fi
- exit