1if [ ! "$_NETWORKING_NETMASK_SUBR" ]; then _NETWORKING_NETMASK_SUBR=1 2# 3# Copyright (c) 2006-2013 Devin Teske 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# 27# $FreeBSD$ 28# 29############################################################ INCLUDES 30 31BSDCFG_SHARE="/usr/share/bsdconfig" 32. $BSDCFG_SHARE/common.subr || exit 1 33f_dprintf "%s: loading includes..." networking/netmask.subr 34f_include $BSDCFG_SHARE/dialog.subr 35f_include $BSDCFG_SHARE/networking/common.subr 36f_include $BSDCFG_SHARE/strings.subr 37 38BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking" 39f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr 40 41############################################################ FUNCTIONS 42 43# f_dialog_maskerror $error $netmask 44# 45# Display a msgbox with the appropriate error message for an error returned by 46# the f_validate_netmask function. 47# 48f_dialog_maskerror() 49{ 50 local error="$1" netmask="$2" 51 52 [ ${error:-0} -ne 0 ] || return $SUCCESS 53 54 case "$error" in 55 1) f_show_msg "$msg_ipv4_mask_field_contains_invalid_chars" "$mask" ;; 56 2) f_show_msg "$msg_ipv4_mask_field_is_null" "$mask" ;; 57 3) f_show_msg "$msg_ipv4_mask_field_exceeds_max_value" "$mask" ;; 58 4) f_show_msg "$msg_ipv4_mask_field_missing_or_extra" "$mask" ;; 59 5) f_show_msg "$msg_ipv4_mask_field_invalid_value" "$mask" ;; 60 esac 61} 62 63# f_dialog_validate_netmask $netmask 64# 65# Returns zero if the given argument (a subnet mask) is of the proper format. 66# 67# If the subnet mask is determined to be invalid, the appropriate error will be 68# displayed using the f_dialog_maskerror function above. 69# 70f_dialog_validate_netmask() 71{ 72 local netmask="$1" 73 74 f_validate_netmask "$netmask" 75 local retval=$? 76 77 # Produce an appropriate error message if necessary. 78 [ $retval -eq $SUCCESS ] || f_dialog_maskerror $retval "$netmask" 79 80 return $retval 81} 82 83# f_dialog_input_netmask $interface $netmask 84# 85# Edits the IP netmask of the given interface. 86# 87f_dialog_input_netmask() 88{ 89 local interface="$1" _netmask="$2" _input 90 91 # 92 # Return with-error when there are NFS-mounts currently active. If the 93 # subnet mask is changed while NFS-exported directories are mounted, 94 # the system may hang (if any NFS mounts are using that interface). 95 # 96 if f_nfs_mounted && ! f_jailed; then 97 local setting 98 f_sprintf setting "$msg_current_subnet" \ 99 "$interface" "$_netmask" 100 f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" || 101 return $DIALOG_CANCEL 102 fi 103 104 # 105 # Loop until the user provides taint-free input. 106 # 107 local msg 108 f_sprintf msg "$msg_please_enter_subnet_mask" "$interface" 109 while :; do 110 # 111 # Return error status if: 112 # - User has either pressed ESC or chosen Cancel/No 113 # - User has not made any changes to the given value 114 # 115 f_dialog_input _input "$msg" "$_netmask" \ 116 "$hline_num_punc_tab_enter" || return $? 117 [ "$_netmask" = "$_input" ] && return $DIALOG_CANCEL 118 119 # Return success if NULL value was entered 120 [ "$_input" ] || return $DIALOG_OK 121 122 # Take only the first "word" of the user's input 123 _netmask="$_input" 124 _netmask="${_netmask%%[$IFS]*}" 125 126 # Taint-check the user's input 127 f_dialog_validate_netmask "$_netmask" && break 128 done 129 130 netmask="$_netmask" 131} 132 133############################################################ MAIN 134 135f_dprintf "%s: Successfully loaded." networking/netmask.subr 136 137fi # ! $_NETWORKING_NETMASK_SUBR 138