moved helpers separately

profile.d/pwd.sh

@@ -36,41 +36,9 @@
 
 load_conf "pwd"
 
-# ------------------------------------------------------------------------------
-# Internal helper: put in _PWD_RAND an integer uniformly distributed in
-# [0, $1), for 1 <= $1 <= 2^32. $RANDOM is NOT usable for passwords: it only
-# has 15 bits, a state seeded from the time and the PID, and is predictable.
-# The source is $SRANDOM (bash >= 5.1, from the kernel's random generator), or
-# else /dev/urandom read through od, 256 words at a time to limit the number
-# of processes. Values above the largest multiple of $1 are rejected, so that
-# "% $1" introduces no bias.
-# Usage: _pwd_rand <max>
-_pwd_rand()
-{
-    local max="$1" limit r
-    limit=$(( 4294967296 - 4294967296 % max ))
-    while :; do
-        if [[ -n "${SRANDOM+x}" ]]; then
-            r="$SRANDOM"
-        else
-            if (( ${#_PWD_POOL[@]} == 0 )); then
-                # shellcheck disable=SC2207 # whitespace-separated numbers
-                _PWD_POOL=( $(od -An -v -N1024 -tu4 /dev/urandom 2>/dev/null) )
-                if (( ${#_PWD_POOL[@]} == 0 )); then
-                    disp E "No source of random numbers available (/dev/urandom)."
-                    return 1
-                fi
-            fi
-            r="${_PWD_POOL[-1]}"
-            unset '_PWD_POOL[-1]'
-        fi
-        if (( r < limit )); then
-            _PWD_RAND=$(( r % max ))
-            return 0
-        fi
-    done
-}
-_PWD_POOL=()
+# Common helpers, then the ones private to this module (helpers/pwd.sh)
+declare -F _profile_load_helpers >/dev/null || . "$(dirname -- "${BASH_SOURCE[0]}")/../helpers/common.sh"
+_profile_load_helpers "${BASH_SOURCE[0]}"
 
 # ------------------------------------------------------------------------------
 # genpwd : generate a password with different criteria
@@ -332,9 +300,6 @@ genpwd()
     done
 }
 export -f genpwd
-# ------------------------------------------------------------------------------
-
-
 # ------------------------------------------------------------------------------
 # pwdscore : score a password quality from 1 to 100
 # Usage: pwdscore [options] <password>
@@ -541,5 +506,4 @@ pwdscore()
 export -f pwdscore
 # ------------------------------------------------------------------------------
 
-
 # EOF