new type __cron: installs and manages cron jobs

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

conf/type/__cron/explorer/entry

@@ -0,0 +1,39 @@
+#!/bin/sh
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+name="$__object_id"
+user="$(cat "$__object/parameter/user")"
+
+prefix="#cdist:__cron/$name"
+suffix="#/cdist:__cron/$name"
+
+crontab -u $user -l | awk -v prefix="$prefix" -v suffix="$suffix" '
+{
+   if (index($0,prefix)) {
+      triggered=1
+   }
+   if (triggered) {
+      if (index($0,suffix)) {
+            triggered=0
+      }
+      print
+   }
+}
+'

conf/type/__cron/gencode-remote

@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+user="$(cat "$__object/parameter/user")"
+state_should="$(cat "$__object/parameter/state")"
+state_is=$(cmp --quiet "$__object/parameter/entry" "$__object/explorer/entry" \
+   && echo present \
+   || echo absent
+)
+
+if [ "$state_is" != "$state_should" ]; then
+   case "$state_should" in
+      present)
+         cat << DONE
+tmp=\$(mktemp)
+crontab -u $user -l > \$tmp
+cat >> \$tmp << EOC
+$(cat "$__object/parameter/entry")"
+EOC
+crontab -u $user \$tmp
+rm \$tmp
+DONE
+      ;;
+      absent)
+         # defined in type manifest
+         prefix="$(cat "$__object/parameter/prefix")"
+         suffix="$(cat "$__object/parameter/suffix")"
+         cat << DONE
+crontab -u $user -l | awk -v prefix="$prefix" -v suffix="$suffix" '
+{
+   if (index(\$0,prefix)) {
+      triggered=1
+   }
+   if (triggered) {
+      if (index(\$0,suffix)) {
+            triggered=0
+      }
+   } else {
+      print
+   }
+}
+' | crontab -u $user -
+DONE
+      ;;
+   esac
+fi

conf/type/__cron/man.text

@@ -0,0 +1,61 @@
+cdist-type__cron(7)
+===================
+Steven Armstrong <steven-cdist--@--armstrong.cc>
+
+
+NAME
+----
+cdist-type__cron - installs and manages cron jobs
+
+
+DESCRIPTION
+-----------
+This cdist type allows you to manage entries in a users crontab.
+
+
+REQUIRED PARAMETERS
+-------------------
+user::
+   The user who's crontab is edited
+command::
+   The command to run.
+
+
+OPTIONAL PARAMETERS
+-------------------
+state::
+   Either present or absent. Defaults to present.
+minute::
+   See crontab(5). Defaults to *
+hour::
+   See crontab(5). Defaults to *
+day_of_month::
+   See crontab(5). Defaults to *
+month::
+   See crontab(5). Defaults to *
+day_of_week::
+   See crontab(5). Defaults to *
+
+
+EXAMPLES
+--------
+
+--------------------------------------------------------------------------------
+# add cronjob
+__cron some-id --user root --command "/path/to/script"
+
+# remove cronjob
+__cron some-id --user root --command "/path/to/script" --state absent
+--------------------------------------------------------------------------------
+
+
+SEE ALSO
+--------
+- cdist-type(7)
+- crontab(5)
+
+
+COPYING
+-------
+Copyright \(C) 2011 Steven Armstrong. Free use of this software is
+granted under the terms of the GNU General Public License version 3 (GPLv3).

conf/type/__cron/manifest

@@ -0,0 +1,66 @@
+#!/bin/sh
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+name="$__object_id"
+user="$(cat "$__object/parameter/user")"
+command="$(cat "$__object/parameter/command")"
+
+# set defaults
+if [ ! -f "$__object/parameter/state" ]; then
+   echo "present" > "$__object/parameter/state"
+fi
+if [ -f "$__object/parameter/minute" ]; then
+   minute="$(cat "$__object/parameter/minute")"
+else
+   minute="*"
+   echo "$minute" > "$__object/parameter/minute"
+fi
+if [ -f "$__object/parameter/hour" ]; then
+   hour="$(cat "$__object/parameter/hour")"
+else
+   hour="*"
+   echo "$hour" > "$__object/parameter/hour"
+fi
+if [ -f "$__object/parameter/day_of_month" ]; then
+   day_of_month="$(cat "$__object/parameter/day_of_month")"
+else
+   day_of_month="*"
+   echo "$day_of_month" > "$__object/parameter/day_of_month"
+fi
+if [ -f "$__object/parameter/month" ]; then
+   month="$(cat "$__object/parameter/month")"
+else
+   month="*"
+   echo "$month" > "$__object/parameter/month"
+fi
+if [ -f "$__object/parameter/day_of_week" ]; then
+   day_of_week="$(cat "$__object/parameter/day_of_week")"
+else
+   day_of_week="*"
+   echo "$day_of_week" > "$__object/parameter/day_of_week"
+fi
+
+# NOTE: if changed, also change in explorers
+prefix="#cdist:__cron/$name"
+suffix="#/cdist:__cron/$name"
+echo "$prefix" | tee "$__object/parameter/prefix" > "$__object/parameter/entry"
+echo "$minute $hour $day_of_month $month $day_of_week $command" >> "$__object/parameter/entry"
+echo "$suffix" | tee "$__object/parameter/suffix" >> "$__object/parameter/entry"
+

conf/type/__cron/parameter/optional

@@ -0,0 +1,6 @@
+state
+minute
+hour
+day_of_month
+month
+day_of_week

conf/type/__cron/parameter/required

@@ -0,0 +1,2 @@
+user
+command