several improvement and armonisation in filefct.sh, module auth and patch_snmp improved

modules/install_pkg.sh

@@ -13,7 +13,7 @@
 #  * PKGSEL: List of package to install
 # ------------------------------------------------------------------------------
 
-export VER_install_pkg="0.1.4"
+export VER_install_pkg="0.1.5"
 export DEP_install_pkg="upgrade_dist"
 
 install_pkg()
@@ -29,9 +29,9 @@ install_pkg()
         for pkg in $PKGS_BLACKLIST; do
             prnt I "Placing $pkg into the blacklist..."
             local dest=/etc/apt/preferences.d/blacklist_$pkg
-            installfile pkgman/blacklist.conf $dest &&
+            install_file pkgman/blacklist.conf $dest &&
                 sed -i -e "s/@pkg@/pkg/" $dest
-            tagfile $dest
+            tag_file $dest
 
             # If blacklisted we suppose uninstall as well (if neeeded)
             pkgrm $pkg
@@ -59,6 +59,7 @@ precheck_install_pkg()
 
     if [[ -z PKGS_BLACKLIST ]]; then
         prnt W "The packages $pkg will be placed into the blacklist !"
+        file_must_exists pkgman/blacklist.conf
     fi
 
     if [[ -z $PKGSEL ]]; then
@@ -66,7 +67,6 @@ precheck_install_pkg()
     else
         prnt I "$(echo $PKGSEL | wc -w) additionnal package have to be installed."
     fi
-    file_exists pkgman/blacklist.conf
 }
 
 export -f install_pkg