283 lines
7.7 KiB
Bash
283 lines
7.7 KiB
Bash
##@cooked comments # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
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## Gestion du fichier crontab
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##@cooked nocomments
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##@require base
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uprovide crontab
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urequire base
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# Ajouter la ligne $1 au crontab de l'utilisateur $2
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# Le code de retour est 123 si la ligne est déjà présente
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function add_to_crontab() {
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local -a crontab=(crontab ${2:+-u "$2"})
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local current="$("${crontab[@]}" -l 2>/dev/null)"
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local tmpfile
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ac_set_tmpfile tmpfile
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if [ -n "$current" ]; then
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echo "$current" >"$tmpfile"
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fi
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local NL=$'\n'
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if quietgrep -xF "$1$NL#$1" "$tmpfile"; then
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ac_clean "$tmpfile"
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return 123
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else
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echo "$1" >>"$tmpfile"
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"${crontab[@]}" "$tmpfile"
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ac_clean "$tmpfile"
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fi
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}
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# Supprimer la ligne $1 du crontab de l'utilisateur $2
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# Le code de retour est 123 si la ligne a déjà été supprimée
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function remove_from_crontab() {
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local -a crontab=(crontab ${2:+-u "$2"})
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local current="$("${crontab[@]}" -l 2>/dev/null)"
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local tmpfile
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ac_set_tmpfile tmpfile
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if [ -n "$current" ]; then
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echo "$current" >"$tmpfile"
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fi
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local NL=$'\n'
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if ! quietgrep -xF "$1$NL#$1" "$tmpfile"; then
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ac_clean "$tmpfile"
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return 123
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else
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grep -vxF "$1$NL#$1" "$tmpfile" | "${crontab[@]}" -
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ac_clean "$tmpfile"
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fi
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}
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# Désactiver la ligne $1 du crontab de l'utilisateur $2 en mettant '#' devant. Si
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# la ligne n'existe pas, elle est ajoutée mais commentée.
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# Le code de retour est 123 si la ligne est déjà désactivée
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function disable_in_crontab() {
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local -a crontab=(crontab ${2:+-u "$2"})
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local current="$("${crontab[@]}" -l 2>/dev/null)"
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local tmpfile
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ac_set_tmpfile tmpfile
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if [ -n "$current" ]; then
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echo "$current" >"$tmpfile"
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fi
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local NL=$'\n'
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if ! quietgrep -xF "$1$NL#$1" "$tmpfile"; then
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echo "#$1" >>"$tmpfile"
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"${crontab[@]}" "$tmpfile"
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elif quietgrep -xF "#$1" "$tmpfile"; then
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ac_clean "$tmpfile"
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return 123
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else
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<"$tmpfile" awkrun line="$1" '$0 == line { $0 = "#" $0 } { print }' | "${crontab[@]}" -
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ac_clean "$tmpfile"
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fi
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}
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# Activer la ligne $1 du crontab de l'utilisateur $2 en enlevant '#' devant. Si
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# la ligne n'existe pas, elle est ajoutée.
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# Le code de retour est 123 si la ligne est déjà activée
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function enable_in_crontab() {
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local -a crontab=(crontab ${2:+-u "$2"})
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local current="$("${crontab[@]}" -l 2>/dev/null)"
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local tmpfile
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ac_set_tmpfile tmpfile
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if [ -n "$current" ]; then
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echo "$current" >"$tmpfile"
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fi
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local NL=$'\n'
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if ! quietgrep -xF "$1$NL#$1" "$tmpfile"; then
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echo "$1" >>"$tmpfile"
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"${crontab[@]}" "$tmpfile"
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elif quietgrep -xF "$1" "$tmpfile"; then
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ac_clean "$tmpfile"
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return 123
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else
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<"$tmpfile" awkrun line="$1" '$0 == "#" line { sub(/^#/, "") } { print }' | "${crontab[@]}" -
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ac_clean "$tmpfile"
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fi
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}
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# Afficher la spécification crontab correspondant à l'heure courante
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function ctnow() {
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date +"%-M %-H %-d %-m %u"
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}
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# Analyser STDIN qui contient des lignes au format crontab, et afficher des
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# commandes pour les lignes correspondant à la date courante.
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# Les commandes sont de la forme "export var=value" pour la définition d'une
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# variable, "__ctexec 'cmd'" pour exécuter la commande correspondante ou
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# "__cterror 'msg'" en cas d'erreur de syntaxe sur une ligne. Il faut bien
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# entendu définir les function __ctexec et __cterror.
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# Cette fonction s'utilise de cette manière:
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# function __ctexec() { eval "$*"; }
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# function __cterror() { die "$*"; }
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# eval "$(ctresolve <crontab)"
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function ctresolve() {
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local -a ctnow
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eval "ctnow=($(ctnow))"
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filter_conf | awkrun -f ctnow[@] '
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function ctmatch(ctval, ref, parts, part, i, j, start, end, step, ok) {
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ok = 0
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split(ctval, parts, /,/)
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for(i = 1; i <= length(parts); i++) {
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part = parts[i]
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start = -1; end = -1; step = 1
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# extraire /step
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pos = index(part, "/")
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if (pos != 0) {
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step = substr(part, pos + 1) + 0
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part = substr(part, 1, pos - 1)
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}
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# traiter start-end
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pos = index(part, "-")
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if (pos != 0) {
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start = substr(part, 1, pos - 1) + 0
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end = substr(part, pos + 1) + 0
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} else {
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start = part + 0
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end = start
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}
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# tester si ça matche
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#print "start=" start ", end=" end ", step=" step", ref=" ref #DEBUG
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for (j = start; j <= end; j += step) {
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if (j == ref) {
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ok = 1
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break
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}
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}
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if (ok) break
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}
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return ok
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}
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BEGIN {
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refM = ctnow[1]; refH = ctnow[2]; refdom = ctnow[3]; refmon = ctnow[4]; refdow = ctnow[5]
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ctref = refM " " refH " " refdom " " refmon " " refdow
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print "##now: " ctref
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match_ctline = 0
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match_indented = 0
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}
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/^(export[ \t]+)?[a-zA-Z_][a-zA-Z0-9_]*[-+%#?]=/ {
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# manipulation de variables de type PATH
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match($0, /^(export[ \t]+)?([a-zA-Z_][a-zA-Z0-9_]*)([-+%#?])=(.*)$/, parts)
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name = parts[2]
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type = parts[3]
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value = parts[4]
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if (type == "+" || type == "%") {
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print "uaddpath " value " " name
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} else if (type == "#") {
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print "uinspath " value " " name
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} else if (type == "-") {
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print "udelpath " value " " name
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} else if (type == "?") {
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print "[ -n \"$" name "\" ] || " name "=" value
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}
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print "export " name
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next
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}
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/^(export[ \t]+)?[a-zA-Z_][a-zA-Z0-9_]*=/ {
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# spécification de variable
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sub(/^export[ \t]+/, "", $0)
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print "export " $0
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next
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}
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/^\$.+/ {
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# exécution de commande arbitraire
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if ($0 ~ /^\$\{([ \t]*(#.*)?)?$/) {
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# commande sur plusieurs lignes
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getline
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while ($0 !~ /^\$\}([ \t]*(#.*)?)?$/) {
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print
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if (getline <= 0) break
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}
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} else {
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# commande sur une seule ligne
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sub(/^\$/, "", $0)
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print
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}
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next
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}
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/^[ \t]*[-0-9/*,]+[ ]*[-0-9/*,]+[ ]*[-0-9/*,]+[ ]*[-0-9/*,]+[ ]*[-0-9/*,]+/ {
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# ligne de planification
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M = $1; H = $2; dom = $3; mon = $4; dow = $5
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sub(/^[ ]*[^ ]+[ ]+[^ ]+[ ]+[^ ]+[ ]+[^ ]+[ ]+[^ ]+[ ]*/, "", $0)
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if (!match_ctline) match_indented = 0
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ctline = M " " H " " dom " " mon " " dow
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gsub(/\*/, "0-59", M)
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Mok = ctmatch(M, refM)
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gsub(/\*/, "0-23", H)
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Hok = ctmatch(H, refH)
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gsub(/\*/, "1-31", dom)
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domok = ctmatch(dom, refdom)
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gsub(/\*/, "1-12", mon)
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monok = ctmatch(mon, refmon)
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gsub(/\*/, "1-7", dow)
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dowok = ctmatch(dow, refdow)
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if (Mok && Hok && monok && (domok || dowok)) {
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print "##matches: " ctline
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match_ctline = 1
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match_indented = 1
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}
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if (match_ctline && $0 != "") {
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print "__ctexec " quote_value($0)
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match_ctline = 0
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}
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next
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}
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/^[ \t]+/ {
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if (match_indented) {
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# il faut matcher les commandes indentees
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sub(/^[ \t]+/, "", $0)
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print "__ctexec " quote_value($0)
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}
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next
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}
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{
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print "__cterror " quote_value("ligne de format incorrect: " $0)
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}
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'
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}
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## Préfixes
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function get_default_crontabdir_prefix() {
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if check_sysinfos -s darwin; then
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if check_sysinfos -d 10.6+; then
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echo /var/at/tabs
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else
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echo /var/cron/tabs
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fi
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elif check_sysinfos -s linux; then
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if check_sysinfos -d debianlike; then
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echo /var/spool/cron/crontabs
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elif check_sysinfos -d redhatlike; then
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echo /var/spool/cron
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fi
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fi
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}
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__crontab_prefixes=
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function __compute_crontab_prefixes() {
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[ -n "$__crontab_prefixes" ] && return
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CRONTABDIR="${CRONTABDIR:-$(get_default_crontabdir_prefix)}"
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__crontab_prefixes=1
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}
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UTOOLS_PREFIXES=("${UTOOLS_PREFIXES[@]}" CRONTABDIR)
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function compute_crontab_prefixes() {
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__compute_crontab_prefixes
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}
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function recompute_crontab_prefixes() {
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__crontab_prefixes=
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__compute_crontab_prefixes
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}
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function get_CRONTABDIR_prefix() {
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__compute_crontab_prefixes
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echo "$CRONTABDIR"
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}
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