First version of the CIS Docker Benchmark v1.0.0

helper_lib.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+# Returns the absolute path of a given string
+abspath () { case "$1" in /*)printf "%s\n" "$1";; *)printf "%s\n" "$PWD/$1";; esac; }
+
+# Compares versions of software of the format X.Y.Z
+do_version_check() {
+    [ "$1" = "$2" ] && return 10
+
+    ver1front=`printf $1 | cut -d "." -f -1`
+    ver1back=`printf $1 | cut -d "." -f 2-`
+    ver2front=`printf $2 | cut -d "." -f -1`
+    ver2back=`printf $2 | cut -d "." -f 2-`
+
+    if [ "$ver1front" != "$1" ] || [ "$ver2front" != "$2" ]; then
+        [ "$ver1front" -gt "$ver2front" ] && return 11
+        [ "$ver1front" -lt "$ver2front" ] && return 9
+
+        [ "$ver1front" = "$1" ] || [ -z "$ver1back" ] && ver1back=0
+        [ "$ver2front" = "$2" ] || [ -z "$ver2back" ] && ver2back=0
+        do_version_check "$ver1back" "$ver2back"
+        return $?
+    else
+        [ "$1" -gt "$2" ] && return 11 || return 9
+    fi
+}
+
+# Compares two strings and returns 0 if the second is a substring of the first
+contains() {
+    string="$1"
+    substring="$2"
+    if test "${string#*$substring}" != "$string"
+    then
+        return 0    # $substring is in $string
+    else
+        return 1    # $substring is not in $string
+    fi
+}