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# 28############################################################ INCLUDES 29 30BSDCFG_SHARE="/usr/share/bsdconfig" 31. $BSDCFG_SHARE/common.subr || exit 1 32f_dprintf "%s: loading includes..." networking/netmask.subr 33f_include $BSDCFG_SHARE/dialog.subr 34f_include $BSDCFG_SHARE/networking/common.subr 35f_include $BSDCFG_SHARE/strings.subr 36 37BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking" 38f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr 39 40############################################################ FUNCTIONS 41 42# f_dialog_maskerror $error $netmask 43# 44# Display a msgbox with the appropriate error message for an error returned by 45# the f_validate_netmask function. 46# 47f_dialog_maskerror() 48{ 49 local error="$1" netmask="$2" 50 51 [ ${error:-0} -ne 0 ] || return $SUCCESS 52 53 case "$error" in 54 1) f_show_msg "$msg_ipv4_mask_field_contains_invalid_chars" "$mask" ;; 55 2) f_show_msg "$msg_ipv4_mask_field_is_null" "$mask" ;; 56 3) f_show_msg "$msg_ipv4_mask_field_exceeds_max_value" "$mask" ;; 57 4) f_show_msg "$msg_ipv4_mask_field_missing_or_extra" "$mask" ;; 58 5) f_show_msg "$msg_ipv4_mask_field_invalid_value" "$mask" ;; 59 esac 60} 61 62# f_dialog_validate_netmask $netmask 63# 64# Returns zero if the given argument (a subnet mask) is of the proper format. 65# 66# If the subnet mask is determined to be invalid, the appropriate error will be 67# displayed using the f_dialog_maskerror function above. 68# 69f_dialog_validate_netmask() 70{ 71 local netmask="$1" 72 73 f_validate_netmask "$netmask" 74 local retval=$? 75 76 # Produce an appropriate error message if necessary. 77 [ $retval -eq $SUCCESS ] || f_dialog_maskerror $retval "$netmask" 78 79 return $retval 80} 81 82# f_dialog_input_netmask $interface $netmask 83# 84# Edits the IP netmask of the given interface. 85# 86f_dialog_input_netmask() 87{ 88 local interface="$1" _netmask="$2" _input 89 90 # 91 # Return with-error when there are NFS-mounts currently active. If the 92 # subnet mask is changed while NFS-exported directories are mounted, 93 # the system may hang (if any NFS mounts are using that interface). 94 # 95 if f_nfs_mounted && ! f_jailed; then 96 local setting 97 f_sprintf setting "$msg_current_subnet" \ 98 "$interface" "$_netmask" 99 f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" || 100 return $DIALOG_CANCEL 101 fi 102 103 # 104 # Loop until the user provides taint-free input. 105 # 106 local msg 107 f_sprintf msg "$msg_please_enter_subnet_mask" "$interface" 108 while :; do 109 # 110 # Return error status if: 111 # - User has either pressed ESC or chosen Cancel/No 112 # - User has not made any changes to the given value 113 # 114 f_dialog_input _input "$msg" "$_netmask" \ 115 "$hline_num_punc_tab_enter" || return $? 116 [ "$_netmask" = "$_input" ] && return $DIALOG_CANCEL 117 118 # Return success if NULL value was entered 119 [ "$_input" ] || return $DIALOG_OK 120 121 # Take only the first "word" of the user's input 122 _netmask="$_input" 123 _netmask="${_netmask%%[$IFS]*}" 124 125 # Taint-check the user's input 126 f_dialog_validate_netmask "$_netmask" && break 127 done 128 129 netmask="$_netmask" 130} 131 132############################################################ MAIN 133 134f_dprintf "%s: Successfully loaded." networking/netmask.subr 135 136fi # ! $_NETWORKING_NETMASK_SUBR 137