add --state parameter to __file type which allows removal of files

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

conf/type/__file/gencode-local

@@ -22,23 +22,26 @@
 #
 
 destination="/$__object_id"
+state_should="$(cat "$__object/parameter/state")"
 
-if [ -f "$__object/parameter/source" ]; then
-   source="$(cat "$__object/parameter/source")"
+if [ "$state_should" = "present" ]; then
+   if [ -f "$__object/parameter/source" ]; then
+      source="$(cat "$__object/parameter/source")"
 
-   if [ -f "$source" ]; then
-      local_cksum="$(cksum < "$source")"
-      remote_cksum="$(cat "$__object/explorer/cksum")"
+      if [ -f "$source" ]; then
+         local_cksum="$(cksum < "$source")"
+         remote_cksum="$(cat "$__object/explorer/cksum")"
 
-      if [ "$local_cksum" != "$remote_cksum" ]; then
-         # FIXME: The username is ugly and hardcoded, replace after 1.0!
-         # Probably a better aproach is to have the user configured
-         # ~/.ssh/config to contain the right username
-         # Probably describe it in cdist-quickstart...
-         echo scp "$source" "root@${__target_host}:${destination}"
+         if [ "$local_cksum" != "$remote_cksum" ]; then
+            # FIXME: The username is ugly and hardcoded, replace after 1.0!
+            # Probably a better aproach is to have the user configured
+            # ~/.ssh/config to contain the right username
+            # Probably describe it in cdist-quickstart...
+            echo scp "$source" "root@${__target_host}:${destination}"
+         fi
+      else
+         echo "Source \"$source\" does not exist." >&2
+         exit 1
       fi
-   else
-      echo "Source \"$source\" does not exist." >&2
-      exit 1
    fi
 fi

conf/type/__file/gencode-remote

@@ -22,25 +22,33 @@
 #
 
 destination="/$__object_id"
+state_should="$(cat "$__object/parameter/state")"
+exists="$(cat "$__object/explorer/exists")"
 
-# No source? Create empty file
-if [ ! -f "$__object/parameter/source" ]; then
-   if [ no = "$(cat "$__object/explorer/exists")" ]; then
-      echo touch \"$destination\"
+if [ "$state_should" = "present" ]; then
+   # No source? Create empty file
+   if [ ! -f "$__object/parameter/source" ]; then
+      if [ "$exists" = "no" ]; then
+         echo touch \"$destination\"
+      fi
+   fi
+
+   # Mode settings
+   if [ -f "$__object/parameter/mode" ]; then
+      echo chmod \"$(cat "$__object/parameter/mode")\" \"$destination\"
+   fi
+
+   # Group
+   if [ -f "$__object/parameter/group" ]; then
+      echo chgrp \"$(cat "$__object/parameter/group")\" \"$destination\"
+   fi
+
+   # Owner
+   if [ -f "$__object/parameter/owner" ]; then
+      echo chown \"$(cat "$__object/parameter/owner")\" \"$destination\"
+   fi
+elif [ "$state_should" = "absent" ]; then
+   if [ "$exists" = "yes" ]; then
+      echo rm \"$destination\"
    fi
 fi
-
-# Mode settings
-if [ -f "$__object/parameter/mode" ]; then
-   echo chmod \"$(cat "$__object/parameter/mode")\" \"$destination\"
-fi
-
-# Group
-if [ -f "$__object/parameter/group" ]; then
-   echo chgrp \"$(cat "$__object/parameter/group")\" \"$destination\"
-fi
-
-# Owner
-if [ -f "$__object/parameter/owner" ]; then
-   echo chown \"$(cat "$__object/parameter/owner")\" \"$destination\"
-fi

conf/type/__file/man.text

@@ -5,21 +5,24 @@ Nico Schottelius <nico-cdist--@--schottelius.org>
 
 NAME
 ----
-cdist-type__file - Create files
+cdist-type__file - Manage files
 
 
 DESCRIPTION
 -----------
-This cdist type allows you to create files on the target.
+This cdist type allows you to create files, remove files and set file 
+attributes on the target.
 
 
 REQUIRED PARAMETERS
 -------------------
 None.
 
-
 OPTIONAL PARAMETERS
 -------------------
+state::
+   'present' or 'absent', defaults to 'present'
+
 group::
    Group to chgrp to.
 
@@ -40,13 +43,18 @@ EXAMPLES
 --------------------------------------------------------------------------------
 # Create  /etc/cdist-configured as an empty file
 __file /etc/cdist-configured
+# The same thing
+__file /etc/cdist-configured --ensure present
+# Delete existing file
+__file /etc/cdist-configured --ensure absent
 
 # Use __file from another type
-__file /etc/issue --source "$__type/files/archlinux"
+__file /etc/issue --source "$__type/files/archlinux" --ensure present
 
 # Supply some more settings
 __file /etc/shadow --source "$__type/files/shadow" \
-   --owner root --group shadow --mode 0640
+   --owner root --group shadow --mode 0640 \
+   --ensure present
 --------------------------------------------------------------------------------
 
 

conf/type/__file/manifest

@@ -0,0 +1,27 @@
+#!/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="$__object_id"
+
+if [ -f "$__object/parameter/state" ]; then
+   state="$(cat "$__object/parameter/state")"
+else
+   echo "present" > "$__object/parameter/state"
+fi

conf/type/__file/parameter/optional

@@ -1,3 +1,4 @@
+state
 group
 mode
 owner