Add global explorers su, sudo and sucmd.

cdist/conf/explorer/su

@@ -17,11 +17,18 @@
 # You should have received a copy of the GNU General Public License
 # along with cdist. If not, see <http://www.gnu.org/licenses/>.
 #
+# This explorer returns script code string for running a command with su.
+# If no su is found then it returns empty string.
+# It uses two arguments, first user and the second command to run.
+# If the result string is assigned to foo it is used as:
+# $ $foo user command
+#
 
 which su > /dev/null 2>&1
 if [ $? -eq 0 ]
 then
-    echo yes
+    su_func='f() { su -c "$2" $1 ; }'
+    echo "eval '${su_func}' ; f "
 else
-    echo no
+    echo ""
 fi

cdist/conf/explorer/sucmd

@@ -0,0 +1,46 @@
+#!/bin/sh
+#
+# 2016 Darko Poljak (darko.poljak at gmail.com)
+#
+# 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/>.
+#
+# This explorer returns script code string for running a command with su
+# or sudo, whichever it founds. If searches the command in the order of
+# first sudo and then su if sudo is not found.
+# If no sudo nor su is found then it returns string script code to run
+# bare command.
+# It uses two arguments, first user and the second command to run.
+# If the result string is assigned to foo it is used as:
+# $ $foo user command
+#
+
+# first check sudo
+which sudo > /dev/null 2>&1
+if [ $? -eq 0 ]
+then
+    func='f() { sudo -H -u $1 $2; }'
+else
+    # if no sudo then check su
+    which su > /dev/null 2>&1
+    if [ $? -eq 0 ]
+    then
+        func='f() { su -c "$2" $1 ; }'
+    else
+        # if no sudo nor su then run bare command
+        func='f() { $2 ; }'
+    fi
+fi
+echo "eval '${func}' ; f "

cdist/conf/explorer/sudo

@@ -17,11 +17,18 @@
 # You should have received a copy of the GNU General Public License
 # along with cdist. If not, see <http://www.gnu.org/licenses/>.
 #
+# This explorer returns script code string for running a command with sudo.
+# If no sudo is found then it returns empty string.
+# It uses two arguments, first user and the second command to run.
+# If the result string is assigned to foo it is used as:
+# $ $foo user command
+#
 
 which sudo > /dev/null 2>&1
 if [ $? -eq 0 ]
 then
-    echo yes
+    sudo_func='f() { sudo -H -u $1 $2; }'
+    echo "eval '${sudo_func}' ; f "
 else
-    echo no
+    echo ""
 fi

cdist/conf/type/__package_pip/gencode-remote

@@ -45,42 +45,24 @@ runasparam="$__object/parameter/runas"
 if [ -f "$runasparam" ]
 then
     runas=$(cat "$runasparam")
-    has_sudo=$(cat "$__object/explorer/sudo")
-    if [ "$has_sudo" = "yes" ]
-    then
-        runas_cmd="sudo"
-    else
-        has_su=$(cat "$__object/explorer/su")
-        if [ "$has_su" = "yes" ]
-        then
-            runas_cmd="su"
-        else
-            runas_cmd=""
-        fi
-    fi
+    runas_cmd=$(cat "$__global/explorer/sucmd")
 else
     runas_cmd=""
 fi
 
 case "$state_should" in
     present)
-        if [ "$runas_cmd" = "sudo" ]
+        if [ "$runas_cmd" ]
         then
-            echo sudo -H -u $runas $pip install -q "$name"
-        elif [ "$runas_cmd" = "su" ]
-        then
-            echo su $runas -c \"$pip install -q "$name"\"
+            echo "$runas_cmd $runas \"$pip install -q $name\""
         else
             echo $pip install -q "$name"
         fi
     ;;
     absent)
-        if [ "$runas_cmd" = "sudo" ]
+        if [ "$runas_cmd" ]
         then
-            echo sudo -H -u $runas $pip uninstall -q -y "$name"
-        elif [ "$runas_cmd" = "su" ]
-        then
-            echo su $runas -c \"$pip uninstall -q -y "$name"\"
+            echo "$runas_cmd $runas \"$pip uninstall -q -y $name\""
         else
             echo $pip uninstall -q -y "$name"
         fi