#! /bin/sh

set -e

## Make sure we're running as the right user.
case $(id -un) in
  mirror) ;;
  *) exec userv -fstdin=/dev/null mirror run "$@";;
esac

## Set up a plausible environment.
HOME=/var/lib/mirror-admin; export HOME; cd
MIRRORS=/mnt/mirrors; export MIRRORS
PATH=$HOME/bin:/usr/bin:/usr/sbin:/bin:/sbin:/usr/local/bin:/usr/local/sbin
export PATH
umask 002

## Make sure we're running with a lock file.
case "${MIRROR_LOCKED-nil}" in
  nil) exec env MIRROR_LOCKED=t locking -f var/mirror.lock "$0" "$@" ;;
esac

## Hack for mad Kerberized NFS.
if [ -r etc/krb5.keytab ]; then
  kinit -k -t etc/krb5.keytab mirror
fi

## Before we start, rotate the logs.  (Doing things this way means that we
## can be sure we don't lose new logs, even if the log rotation goes
## completely mental.
logrotate -s var/logrotate.state etc/logrotate.conf

## Let SIGINT take out the children only.
trap "" INT

## By default run all of the scripts.
case $# in 0) set "*" ;; esac

## Now do the various mirroring things.
for file in $(run-parts --list etc/mirrors.d); do
  [ -x "$file" ] || continue

  matchp=nil
  leaf=$(echo "$file" | sed 's:^.*/::; s/^[0-9]\+[-_.]//')
  for pat in "$@"; do
    case "$leaf" in $pat) matchp=t; break ;; esac
  done
  case $matchp in nil) continue ;; esac

  base=${file##*/}; base=${base#[0-9]*-}
  (
    echo
    echo "***--------------------------------------------------"
    echo "*** Running $base at $(date +%Y-%m-%dT%H:%M:%S)"
    echo
    set +e; (trap - INT; exec "$file"); rc=$?; set -e
    echo
    echo "*** Finished $(date +%Y-%m-%dT%H:%M:%S); rc = $rc"
    if [ -d etc/post-$base.d ]; then
      for i in $(run-parts --list etc/post-$base.d); do
	s=${i##*/}
	echo
	echo "*** Running post-script $s at $(date +%Y-%m-%dT%H:%M:%S)"
	set +e; (trap - INT; exec "$i"); rc=$?; set -e
	echo
	echo "*** Finished post-script $s $(date +%Y-%m-%dT%H:%M:%S); rc = $rc"
      done
    fi
  ) >>log/$base.log 2>&1
done