From 226b7aeb622b48a1431cb782fbdcd42c16b52282 Mon Sep 17 00:00:00 2001 From: Jephte CLAIN Date: Fri, 7 Feb 2014 22:48:03 +0400 Subject: [PATCH] =?UTF-8?q?suite=20impl=C3=A9mentation?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ulib/debian | 625 +++++++++------------------------------------------- ulib/ipcalc | 32 ++- 2 files changed, 127 insertions(+), 530 deletions(-) diff --git a/ulib/debian b/ulib/debian index d2ec772..0330b29 100644 --- a/ulib/debian +++ b/ulib/debian @@ -360,7 +360,16 @@ function network_set_confips() { array_copy "${1:-confips}" __nsc_destconfips } -function __network_interfaces_check_confbr() { +function network_interfaces_check_confbr() { + # Vérifier que la configuration du bridge $1, dont les membres sont les + # interfaces du tableau $2(=ifaces) est faite dans le fichier + # $3(=/etc/network/interfaces) + local -a __nicc_ifaces; array_copy __nicc_ifaces "${2:-ifaces}" + + local br="$1" + local -a ifaces; array_copy ifaces __nicc_ifaces + local nifile="${3:-/etc/network/interfaces}" + awkrun <"$nifile" -f br="$br" ifaces[@]=__nicc_ifaces ' BEGIN { array_new(iface_have_autos) @@ -422,21 +431,20 @@ END { exit 1 } exit 0 -} -' -} -function network_interfaces_check_confbr() { - # Vérifier que la configuration du bridge $1, dont les membres sont les - # interfaces du tableau $2(=ifaces) est faite dans le fichier - # $3(=/etc/network/interfaces) - local -a __nicc_ifaces - array_copy __nicc_ifaces "${2:-ifaces}" - local br="$1" nifile="${3:-/etc/network/interfaces}" - __network_interfaces_check_confbr +}' } -function __network_interfaces_check_confip() { - awkrun <"$nifile" -f iface="$iface" gateway="$gateway" ipsuffixes[@]=__nicc_ipsuffixes ' +function network_interfaces_check_confip() { + # Vérifier que la configuration de l'interface $1, avec la passerelle $2, + # avec les adresses IP du tabbleau $3(=ipsuffixes) est faite dans le fichier + # $4(=/etc/network/interfaces) + local -a __nicc_ipsuffixes; array_copy __nicc_ipsuffixes "${3:-ipsuffixes}" + + local iface="$1" gateway="$2" + local -a ipsuffixes; array_copy ipsuffixes __nicc_ipsuffixes + local nifile="${4:-/etc/network/interfaces}" + + awkrun <"$nifile" -f iface="$iface" gateway="$gateway" ipsuffixes[@]=ipsuffixes ' BEGIN { have_auto = 0 have_hotplug = 0 @@ -539,17 +547,7 @@ END { exit 1 } exit 0 -} -' -} -function network_interfaces_check_confip() { - # Vérifier que la configuration de l'interface $1, avec la passerelle $2, - # avec les adresses IP du tabbleau $3(=ipsuffixes) est faite dans le fichier - # $4(=/etc/network/interfaces) - local -a __nicc_ipsuffixes - array_copy __nicc_ipsuffixes "${3:-ipsuffixes}" - local iface="$1" gateway="$2" nifile="${4:-/etc/network/interfaces}" - __network_interfaces_check_confip +}' } function __network_interfaces_remove_iface() { @@ -630,6 +628,7 @@ function network_interfaces_remove_iface() { local iface="$1" nifile="${2:-/etc/network/interfaces}" local tmpfile; ac_set_tmpfile tmpfile local modified + if __network_interfaces_remove_iface "$iface" <"$nifile" >"$tmpfile"; then cat "$tmpfile" >"$nifile" modified=1 @@ -641,10 +640,13 @@ function network_interfaces_remove_ifaces() { # Supprimer dans le fichier $2(=/etc/network/interfaces) toute la # configuration qui concerne les interfaces du tableau $1=(ifaces) local -a __niri_ifaces; array_copy __niri_ifaces "${1:-ifaces}" + + local -a ifaces; array_copy ifaces __niri_ifaces local nifile="${2:-/etc/network/interfaces}" local workfile; ac_set_tmpfile workfile local tmpfile; ac_set_tmpfile tmpfile local iface modified + cat "$nifile" >"$workfile" for iface in "${__niri_ifaces[@]}"; do if __network_interfaces_remove_iface "$iface" <"$workfile" >"$tmpfile"; then @@ -661,8 +663,48 @@ function network_interfaces_remove_confbr() { # configuration qui concerne le bridge $1, et dont les interfaces sont # listées dans le tableau $2(=ifaces) local -a __nirc_ifaces; array_copy __nirc_ifaces "${2:-ifaces}" - array_ins __nirc_ifaces "$1" - network_interfaces_remove_ifaces __nirc_ifaces "$3" + + local -a ifaces; array_copy ifaces __nirc_ifaces + array_ins ifaces "$1" + + network_interfaces_remove_ifaces ifaces "$3" +} + +function network_interfaces_add_confip() { + # ajouter dans le fichier $4(=/etc/network/interfaces) la configuration pour + # l'interface $1, avec éventuellement la passerelle $2, et les adresses ips + # telles qu'elles sont définies dans le table $3(=ipsuffixes) + local -a __niac_ipsuffixes; array_copy __niac_ipsuffixes "${3:-ipsuffixes}" + + local iface="$1" gateway="$2" + local -a ipsuffixes; array_copy ipsuffixes __niac_ipsuffixes + local nifile="${4:-/etc/network/interfaces}" + local mainip netmask method + + network_parse_ipsuffix "${ipsuffixes[0]}" mainip netmask + if [ "$mainip" == "dhcp" ]; then + mainip= + netmask= + method=dhcp + else + netmask="$(ipcalc_netmask "$netmask")" + [ -n "$netmask" ] || netmask=255.255.255.0 + method=static + fi + + echo >>"$nifile" " +auto $iface +iface $iface inet $method${mainip:+ + address $mainip + netmask $netmask${gateway:+ + gateway $gateway}}" + local i=0 ipsuffix + for ipsuffix in "${ipsuffixes[@]:1}"; do + echo >>"$nifile" "\ + up ip addr add $ipsuffix dev $iface label $iface:$i + down ip addr del $ipsuffix dev $iface label $iface:$i" + i=$(($i + 1)) + done } function network_interfaces_add_confbr() { @@ -670,17 +712,42 @@ function network_interfaces_add_confbr() { # le bridge $1, avec la liste des interfaces dans le tableau $2(=ifaces) et # la liste des configurations des adresses des interfaces dans le tableau # $3(=confips) - : + local -a __niac_ifaces; array_copy __niac_ifaces "${2:-ifaces}" + local -a __niac_confips; array_copy __niac_confips "${3:-confips}" + + local br="$1" + local -a ifaces; array_copy ifaces __niac_ifaces + local -a confips; array_copy confips __niac_confips + local nifile="${4:-/etc/network/interfaces}" + local iface confip + + for iface in "${ifaces[@]}"; do + echo >>"$nifile" " +auto $iface +iface $iface inet manual" + done + + local found= + for confip in "${confips[@]}"; do + network_parse_confip "$confip" iface gateway ipsuffixes + if [ "$iface" == "$br" ]; then + found=1 + break + fi + done + [ -n "$found" ] || return 1 + + network_interfaces_add_confip "$br" "$gateway" ipsuffixes "$nifile" + + ifaces="${ifaces[*]}" + [ -n "$ifaces" ] || ifaces="none" + echo >>"$nifile" "\ + bridge_ports $ifaces + bridge_stp off + bridge_fd 2 + bridge_maxwait 0" } -function network_interfaces_add_confip() { - # ajouter dans le fichier $4(=/etc/network/interfaces) la configuration pour - # l'interface $1, avec éventuellement la passerelle $2, et les adresses ips - # telles qu'elles sont définies dans le table $3(=ipsuffixes) - : -} - -#XXX function __old_network_backup() { local file="$1" local backup="$file.orig$(date +%Y%m%d)" @@ -819,492 +886,6 @@ $ip$TAB$host $hostname" "$tmpfile" ac_clean "$tmpfile" } -__DEBIAN_NETWORK_UPDATE_BASE_SCRIPT=' -BEGIN { - method = "dhcp" - array_new(have_iface_hotplugs) - array_new(have_iface_autos) - array_new(have_iface_manuals) - array_new(ips) - array_new(suffixes) - array_new(gateways) - array_new(have_ip_ups) - array_new(have_ip_downs) -} -function indexof_iface(iface, i) { - for (i = 1; i <= ifaces_count; i++) { - if (ifaces[i] == iface) { - return i - } - } - return 0 -} -function indexof_ip(ip, i) { - for (i = 1; i <= ipspecs_count; i++) { - if (ips[i] == ip) { - return i - } - } - return 0 -} -function get_netmask(suffix) { - if (suffix == 0) return "0.0.0.0" - else if (suffix == 8) return "255.0.0.0" - else if (suffix == 16) return "255.255.0.0" - else if (suffix == 24) return "255.255.255.0" - else if (suffix == 32) return "255.255.255.255" - else return suffix -} -function remove_hotplug_iface(iface, line) { - if (line == "") line = $0 - if (line !~ / $/) line = line " " - gsub(" " iface " ", " ", line) - return line -} -function print_hotplug_iface(line) { - if (line ~ /^allow-hotplug *$/) { - # une seule interface sur la ligne: ne pas l"afficher - } else { - # supprimer l"interface de la ligne - sub(/ *$/, "", line) - print line - } -} -function remove_auto_iface(iface, line) { - if (line == "") line = $0 " " - gsub(" " iface " ", " ", line) - return line -} -function print_auto_iface(line) { - if (line ~ /^(allow-)?auto *$/) { - # une seule interface sur la ligne: ne pas l"afficher - } else { - # supprimer l"interface de la ligne - sub(/ *$/, "", line) - print line - } -} -' -__DEBIAN_NETWORK_UPDATE_BRIDGE_SCRIPT=' -BEGIN { - for (i = 1; i <= ifaces_count; i++) { - have_iface_hotplugs[i] = 0 - have_iface_autos[i] = 0 - have_iface_manuals[i] = 0 - } - for (i = 1; i <= ipspecs_count; i++) { - if (match(ipspecs[i], "^([^/]*)(/([^+]*))?(\\+(.*))?$", vs) != 0) { - ip = vs[1] - suffix = vs[3] - gateway = vs[5] - } else { - ip = "" - suffix = "" - gateway = "" - } - if (i == 1) { - if (ip == "dhcp") { - method = "dhcp" - } else { - method = "static" - mainip = ip - } - } - if (suffix == "") suffix = "24" - ips[i] = ip - suffixes[i] = suffix - gateways[i] = gateway - have_ip_ups[i] = i == 1 - have_ip_downs[i] = i == 1 - } -} -' -__DEBIAN_NETWORK_UPDATE_IFACE_SCRIPT=' -BEGIN { - for (i = 1; i <= ipspecs_count; i++) { - if (match(ipspecs[i], "^([^/]*)(/([^+]*))?(\\+(.*))?$", vs) != 0) { - ip = vs[1] - suffix = vs[3] - gateway = vs[5] - } else { - ip = "" - suffix = "" - gateway = "" - } - if (i == 1) { - if (ip == "dhcp") { - method = "dhcp" - } else { - method = "static" - mainip = ip - } - } - if (suffix == "") suffix = "24" - ips[i] = ip - suffixes[i] = suffix - gateways[i] = gateway - have_ip_ups[i] = i == 1 - have_ip_downs[i] = i == 1 - } -} -' - -function __old_network_update_bridge() { - # vérifier la configuration (interfaces de ifaces[@] en manual, présence du - # bridge, bridge en auto, adresse ip principale statique ou en dhcp, - # adresses ip supplémentaires), puis si nécessaire, supprimer l'ancienne - # configuration et créer la nouvelle. - local inf="$1"; shift - local outf="$1"; shift - awkrun <"$inf" -f iface="$1" ipspecs[@]="${2:-ipspecs}" ifaces[@]="${3:-ifaces}" ' -BEGIN { - have_hotplug = 0 - have_auto = 0 - have_iface = 0 - have_method = 0 # static ou dhcp - in_iface = 0 - have_mainip = 0 -} -'" -$__DEBIAN_NETWORK_UPDATE_BASE_SCRIPT -$__DEBIAN_NETWORK_UPDATE_BRIDGE_SCRIPT -"' - -$1 == "iface" && $2 == iface && $3 == "inet" { - have_iface = 1 - if (($0 " ") ~ (" " method " ")) have_method = 1 - in_iface = 1 - next -} -in_iface && ($0 " ") ~ "^[ \\t]*address " mainip " " { have_mainip = 1 } -in_iface && $0 ~ "^[ \\t]*up (/sbin/)?ip addr add " { - if (match($0, "ip addr add (.*)/.* dev " iface, vs) != 0) { - i = indexof_ip(vs[1]) - if (i != 0) have_ip_ups[i] = 1 - } - next -} -in_iface && $0 ~ "^[ \\t]*down (/sbin/)?ip addr del " { - if (match($0, "ip addr del (.*)/.* dev " iface, vs) != 0) { - i = indexof_ip(vs[1]) - if (i != 0) have_ip_downs[i] = 1 - } - next -} -$1 == "iface" { - i = indexof_iface($2) - if (i != 0 && $3 == "inet" && $4 == "manual") { - have_iface_manuals[i] = 1 - } - in_iface = 0 - next -} -$1 == "allow-hotplug" { - if (($0 " ") ~ (" " iface " ")) have_hotplug = 1 - for (i = 1; i <= ifaces_count; i++) { - if (($0 " ") ~ (" " ifaces[i] " ")) iface_have_hotplugs[i] = 1 - } - in_iface = 0 - next -} -$1 ~ /^(allow-)?auto$/ { - if (($0 " ") ~ (" " iface " ")) have_auto = 1 - for (i = 1; i <= ifaces_count; i++) { - if (($0 " ") ~ (" " ifaces[i] " ")) have_iface_autos[i] = 1 - } - in_iface = 0 - next -} - -END { - check_hotplug = !have_hotplug - if (check_hotplug) for (i = 1; i <= ifaces_count; i++) { - if (iface_have_hotplugs[i]) { - check_hotplug = 0 - break - } - } - check_auto = have_auto - if (check_auto) for (i = 1; i <= ifaces_count; i++) { - if (!have_iface_autos[i]) { - check_auto = 0 - break - } - } - check_iface = have_iface && have_method && have_mainip - check_supplips = 1 - for (i = 1; i <= ipspecs_count; i++) { - if (!have_ip_ups[i] || !have_ip_downs[i]) { - check_supplips = 0 - break - } - } - - if (!check_hotplug || !check_auto || !check_iface || !check_supplips) { - exit 1 # il faut refaire la configuration - } - exit 0 # tout est ok -} -' && return 1 - - # il faut refaire la configuration - awkrun <"$inf" >"$outf" -f iface="$1" ipspecs[@]="${2:-ipspecs}" ifaces[@]="${3:-ifaces}" ' -BEGIN { - have_auto = 0 - remove_auto = 0 - array_new(remove_iface_autos) - for (i = 1; i <= ifaces_count; i++) { - remove_iface_autos[i] = 0 - } - replace_conf = 1 - in_iface = 0 - found_iface = 0 - remove_old_iface = 0 -} -'" -$__DEBIAN_NETWORK_UPDATE_BASE_SCRIPT -$__DEBIAN_NETWORK_UPDATE_BRIDGE_SCRIPT -"' -function write_conf() { - replace_conf = 0 - - for (i = 1; i <= ifaces_count; i++) { - printed = 0 - if (!have_iface_autos[i]) { - print "auto " ifaces[i] - printed = 1 - } - if (!have_iface_manuals[i]) { - print "iface " ifaces[i] " inet manual" - printed = 1 - } - if (printed) print "" - } - - if (!have_auto) print "auto " iface - print "iface " iface " inet " method - if (ipspecs_count > 0 && method == "static") { - print " address " ips[1] - print " netmask " get_netmask(suffixes[1]) - if (gateways[1] != "" && gateways[1] != ips[1]) { - print " gateway " gateways[1] - } - } - ports = " bridge_ports" - if (ifaces_count == 0) { - ports = ports " none" - } else { - for (i = 1; i <= ifaces_count; i++) { - ports = ports " " ifaces[i] - } - } - print ports - print " bridge_stp off" - print " bridge_fd 2" - print " bridge_maxwait 0" - serial = 0 - for (i = 2; i <= ipspecs_count; i++) { - print " up ip addr add " ips[i] "/" suffixes[i] " dev " iface " label " iface ":" serial - print " down ip addr del " ips[i] "/" suffixes[i] " dev " iface " label " iface ":" serial - serial++ - } - print "" -} - -remove_old_iface && $1 == "iface" { - remove_old_iface = 0 -} -!remove_old_iface && replace_conf && !in_iface && $1 == "iface" && $2 == iface && $3 == "inet" { - in_iface = 1 - found_iface = 1 - next -} -!remove_old_iface && $1 == "iface" { - in_iface = 0 - for (i = 1; i <= ifaces_count; i++) { - if ($2 == ifaces[i]) { - if ($3 == "inet" && $4 == "manual") { - have_iface_manuals[i] = 1 - break - } else { - remove_old_iface = 1 - } - } - } - if (replace_conf && found_iface) write_conf() - if (!remove_old_iface) print - next -} -$1 == "allow-hotplug" { - in_iface = 0 - remove_old_iface = 0 - if (replace_conf && found_iface) write_conf() - - line = $0 - if (($0 " ") ~ (" " iface " ")) line = remove_hotplug_iface(iface, line) - for (i = 1; i <= ifaces_count; i++) { - if (($0 " ") ~ (" " ifaces[i] " ")) line = remove_hotplug_iface(ifaces[i], line) - } - print_hotplug_iface(line) - next -} -$1 ~ /(allow-)?auto/ { - in_iface = 0 - remove_old_iface = 0 - if (replace_conf && found_iface) write_conf() - - line = $0 - if (($0 " ") ~ (" " iface " ")) { - if (!remove_auto) { - have_auto = 1 - remove_auto = 1 - } else { - line = remove_auto_iface(iface, line) - } - } - for (i = 1; i <= ifaces_count; i++) { - if (($0 " ") ~ (" " ifaces[i] " ")) { - if (!remove_iface_autos[i]) { - have_iface_autos[i] = 1 - remove_iface_autos[i] = 1 - } else { - line = remove_auto_iface(ifaces[i], line) - } - } - } - print_auto_iface(line) - next -} -{ print } -END { - if (replace_conf) write_conf() -} -' - return 0 -} - -function __old_network_update_iface() { - # vérifier la configuration (présence de l'interface, interface en auto, - # adresse ip principale statique ou en dhcp, adresses ip supplémentaires), - # puis si nécessaire, supprimer l'ancienne configuration et créer la - # nouvelle. - local inf="$1"; shift - local outf="$1"; shift - awkrun <"$inf" -f iface="$1" ipspecs[@]="${2:-ipspecs}" ' -BEGIN { - have_hotplug = 0 - have_auto = 0 - have_iface = 0 - have_method = 0 # static ou dhcp - in_iface = 0 - have_mainip = 0 -} -'" -$__DEBIAN_NETWORK_UPDATE_BASE_SCRIPT -$__DEBIAN_NETWORK_UPDATE_IFACE_SCRIPT -"' - -$1 == "iface" && $2 == iface && $3 == "inet" { - have_iface = 1 - if (($0 " ") ~ (" " method " ")) have_method = 1 - in_iface = 1 - next -} -in_iface && ($0 " ") ~ "^[ \\t]*address " mainip " " { have_mainip = 1 } -in_iface && $0 ~ "^[ \\t]*up (/sbin/)?ip addr add " { - if (match($0, "ip addr add (.*)/.* dev " iface, vs) != 0) { - i = indexof_ip(vs[1]) - if (i != 0) have_ip_ups[i] = 1 - } - next -} -in_iface && $0 ~ "^[ \\t]*down (/sbin/)?ip addr del " { - if (match($0, "ip addr del (.*)/.* dev " iface, vs) != 0) { - i = indexof_ip(vs[1]) - if (i != 0) have_ip_downs[i] = 1 - } - next -} -$1 == "iface" { - in_iface = 0 - next -} -$1 == "allow-hotplug" { - if (($0 " ") ~ (" " iface " ")) have_hotplug = 1 - in_iface = 0 - next -} -$1 ~ /^(allow-)?auto$/ { - if (($0 " ") ~ (" " iface " ")) have_auto = 1 - in_iface = 0 - next -} - -END { - check_hotplug = !have_hotplug - check_auto = have_auto - check_iface = have_iface && have_method && have_mainip - check_supplips = 1 - for (i = 1; i <= ipspecs_count; i++) { - if (!have_ip_ups[i] || !have_ip_downs[i]) { - check_supplips = 0 - break - } - } - - if (!check_hotplug || !check_auto || !check_iface || !check_supplips) { - exit 1 # il faut refaire la configuration - } - exit 0 # tout est ok -} -' && return 1 - - # il faut refaire la configuration - awkrun <"$inf" >"$outf" -f iface="$1" ipspecs[@]="${2:-ipspecs}" ' -BEGIN { - have_auto = 0 - remove_auto = 0 - replace_conf = 1 - in_iface = 0 - found_iface = 0 -} -'" -$__DEBIAN_NETWORK_UPDATE_BASE_SCRIPT -$__DEBIAN_NETWORK_UPDATE_IFACE_SCRIPT -"' -function write_conf() { - replace_conf = 0 - if (!have_auto) print "auto " iface - print "iface " iface " inet " method - if (ipspecs_count > 0 && method == "static") { - print " address " ips[1] - print " netmask " get_netmask(suffixes[1]) - if (gateways[1] != "" && gateways[1] != ips[1]) { - print " gateway " gateways[1] - } - } - serial = 0 - for (i = 2; i <= ipspecs_count; i++) { - print " up ip addr add " ips[i] "/" suffixes[i] " dev " iface " label " iface ":" serial - print " down ip addr del " ips[i] "/" suffixes[i] " dev " iface " label " iface ":" serial - serial++ - } - print "" -} - -($0 " ") ~ ("^allow-hotplug.* " iface " ") { print_hotplug_iface(remove_hotplug_iface(iface)); next; } -!remove_auto && ($0 " ") ~ ("^(allow-)?auto.* " iface " ") { have_auto = 1; remove_auto = 1; next; } -remove_auto && ($0 " ") ~ ("^(allow-)?auto.* " iface " ") { print_auto_iface(remove_auto_iface(iface)); next; } -replace_conf && !in_iface && $0 ~ ("^iface " iface " inet ") { in_iface = 1; found_iface = 1; next; } -replace_conf && found_iface && in_iface && $0 ~ "^iface " { print; in_iface = 0; write_conf(); next; } -{ print } -END { - if (replace_conf) write_conf() -} -' - return 0 -} - function network_config() { # (Re)configurer le réseau sur l'hôte courant. # $1 (host) est le nom d'hôte. diff --git a/ulib/ipcalc b/ulib/ipcalc index abbf193..cb5a040 100644 --- a/ulib/ipcalc +++ b/ulib/ipcalc @@ -57,14 +57,30 @@ END { exit status }' <<<"$1" function ipcalc_checkmask() { # vérifier le masque de sous-réseau $1 pour voir si elle est valide. Si oui, # afficher le suffixe (0, 8, 16, 24, 32) associé. Sinon retourner 1 - local mask="$1" - [ "$mask" == 0.0.0.0 ] && mask=0 - [ "$mask" == 255.0.0.0 ] && mask=8 - [ "$mask" == 255.255.0.0 ] && mask=16 - [ "$mask" == 255.255.255.0 ] && mask=24 - [ "$mask" == 255.255.255.255 ] && mask=32 - [ "$mask" == 0 -o "$mask" == 8 -o "$mask" == 16 -o "$mask" == 24 -o "$mask" == 32 ] || return 1 - echo "$mask" + case "$1" in + 0|0.0.0.0) echo 0;; + 8|255.0.0.0) echo 8;; + 16|255.255.0.0) echo 16;; + 24|255.255.255.0) echo 24;; + 32|255.255.255.255) echo 32;; + *) return 1;; + esac + return 0 +} + +function ipcalc_netmask() { + # à partir d'un suffixe (0, 8, 16, 24, 32) ou d'un masque de sous-réseau, + # afficher le masque de sous-réseau. si le suffixe ou le masque ne sont pas + # reconnus, retourner 1 + case "$1" in + 0|0.0.0.0) echo 0.0.0.0;; + 8|255.0.0.0) echo 255.0.0.0;; + 16|255.255.0.0) echo 255.255.0.0;; + 24|255.255.255.0) echo 255.255.255.0;; + 32|255.255.255.255) echo 255.255.255.255;; + *) return 1;; + esac + return 0 } function ipcalc_broadcast() {