100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
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##@cooked comments # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
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## Gestion de mots de passe
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##@cooked nocomments
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##@require base
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uprovide password
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urequire base
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function random_index() {
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# Afficher un index au hasard dans le tableau $1
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[ -n "$1" ] || return
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local -a __rn_array; array_copy __rn_array "$1"
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[ ${#__rn_array[*]} -gt 0 ] || return
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echo $(($RANDOM % ${#__rn_array[*]}))
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}
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function random_value() {
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# Afficher une valeur au hasard dans le tableau $1
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local __rv_index="$(random_index "$1")"
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[ -n "$__rv_index" ] || return
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eval "echo \${$1[$__rv_index]}"
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}
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function random_char() {
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# Afficher un caractère au hasard dans la chaine $1
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local section="$1"
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[ ${#section} -gt 0 ] || return
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local index=$(($RANDOM % ${#section}))
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echo "${section:$index:1}"
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}
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GENPASS_UPPER="AZERTYUIOPQSDFGHJKLMWXCVBN"
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GENPASS_LOWER="azertyuiopqsdfghjklmwxcvbn"
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GENPASS_NUMBERS="1234567890"
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GENPASS_SYMBOLS="&\"'(-_)=^\$*!:;,?./%+#{[|\\]}"
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GENPASS_LEN=10
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GENPASS_SECTIONS=("$GENPASS_UPPER" "$GENPASS_LOWER" "$GENPASS_UPPER$GENPASS_LOWER" "$GENPASS_NUMBERS" "$GENPASS_SYMBOLS" "$GENPASS_NUMBERS$GENPASS_SYMBOLS")
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GENPASS_COUNTS=(0 0 4 0 0 1)
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function genpass() {
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# Générer un mot de passe au hasard avec les paramètres GENPASS_*
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local -a indexes parts
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local count index hascount part password
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[ "${#GENPASS_SECTIONS[*]}" -eq "${#GENPASS_COUNTS[*]}" ] || die "GENPASS_COUNTS et GENPASS_SECTIONS doivent être de même taille"
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# indexes contient les indexes dans le tableau SECTIONS, avec comme poids le
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# nombre de caractères minimum de chaque sections
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indexes=()
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index=0
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for count in "${GENPASS_COUNTS[@]}"; do
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while [ $count -ge 0 ]; do
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array_add indexes "$index"
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count=$(($count - 1))
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done
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index=$(($index + 1))
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done
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# générer chaque caractère du mot de passe au hasard
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parts=()
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while true; do
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# vérifier s'il reste encore des sections avec un nombre minimum
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hascount=
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for count in "${GENPASS_COUNTS[@]}"; do
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[ "$count" -gt 0 ] && {
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hascount=1
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break
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}
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done
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[ -n "$hascount" ] || break
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# calculer la prochaine section à générer
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while true; do
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index=$(random_index GENPASS_SECTIONS)
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[ ${GENPASS_COUNTS[$index]} -gt 0 ] && break
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done
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# générer un caractère au hasard
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part="$(random_char "${GENPASS_SECTIONS[$index]}")"
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array_add parts "$part"
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GENPASS_COUNTS[$index]=$((${GENPASS_COUNTS[$index]} - 1))
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done
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# générer les autres caractères jusqu'à GENPASS_LEN
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while [ "${#parts[*]}" -lt "$GENPASS_LEN" ]; do
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index=$(random_value indexes)
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part="$(random_char "${GENPASS_SECTIONS[$index]}")"
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array_add parts "$part"
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done
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# puis générer le mot de passe en prenant chaque partie au hasard
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password=
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while [ ${#parts[*]} -gt 0 ]; do
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index=$(random_index parts)
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password="$password${parts[$index]}"
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before=()
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[ $index -gt 0 ] && before=("${parts[@]:0:$index}")
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after=("${parts[@]:$((index + 1))}")
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parts=("${before[@]}" "${after[@]}")
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done
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echo "$password"
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}
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