136 lines
4.4 KiB
Plaintext
136 lines
4.4 KiB
Plaintext
if [ ! "$_NETWORKING_NETMASK_SUBR" ]; then _NETWORKING_NETMASK_SUBR=1
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#
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# Copyright (c) 2006-2013 Devin Teske
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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############################################################ INCLUDES
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BSDCFG_SHARE="/usr/share/bsdconfig"
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. $BSDCFG_SHARE/common.subr || exit 1
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f_dprintf "%s: loading includes..." networking/netmask.subr
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f_include $BSDCFG_SHARE/dialog.subr
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f_include $BSDCFG_SHARE/networking/common.subr
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f_include $BSDCFG_SHARE/strings.subr
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BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking"
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f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr
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############################################################ FUNCTIONS
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# f_dialog_maskerror $error $netmask
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#
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# Display a msgbox with the appropriate error message for an error returned by
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# the f_validate_netmask function.
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#
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f_dialog_maskerror()
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{
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local error="$1" netmask="$2"
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[ ${error:-0} -ne 0 ] || return $SUCCESS
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case "$error" in
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1) f_show_msg "$msg_ipv4_mask_field_contains_invalid_chars" "$mask" ;;
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2) f_show_msg "$msg_ipv4_mask_field_is_null" "$mask" ;;
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3) f_show_msg "$msg_ipv4_mask_field_exceeds_max_value" "$mask" ;;
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4) f_show_msg "$msg_ipv4_mask_field_missing_or_extra" "$mask" ;;
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5) f_show_msg "$msg_ipv4_mask_field_invalid_value" "$mask" ;;
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esac
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}
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# f_dialog_validate_netmask $netmask
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#
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# Returns zero if the given argument (a subnet mask) is of the proper format.
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#
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# If the subnet mask is determined to be invalid, the appropriate error will be
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# displayed using the f_dialog_maskerror function above.
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#
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f_dialog_validate_netmask()
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{
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local netmask="$1"
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f_validate_netmask "$netmask"
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local retval=$?
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# Produce an appropriate error message if necessary.
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[ $retval -eq $SUCCESS ] || f_dialog_maskerror $retval "$netmask"
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return $retval
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}
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# f_dialog_input_netmask $interface $netmask
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#
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# Edits the IP netmask of the given interface.
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#
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f_dialog_input_netmask()
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{
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local interface="$1" _netmask="$2" _input
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#
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# Return with-error when there are NFS-mounts currently active. If the
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# subnet mask is changed while NFS-exported directories are mounted,
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# the system may hang (if any NFS mounts are using that interface).
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#
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if f_nfs_mounted && ! f_jailed; then
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local setting="$( printf "$msg_current_subnet" \
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"$interface" "$_netmask" )"
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f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" ||
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return $FAILURE
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fi
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#
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# Loop until the user provides taint-free input.
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#
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local msg="$( printf "$msg_please_enter_subnet_mask" "$interface" )"
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while :; do
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#
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# Return error status if:
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# - User has either pressed ESC or chosen Cancel/No
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# - User has not made any changes to the given value
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#
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f_dialog_input _input "$msg" "$_netmask" \
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"$hline_num_punc_tab_enter" || return
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[ "$_netmask" = "$_input" ] && return $FAILURE
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# Return success if NULL value was entered
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[ "$_input" ] || return $SUCCESS
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# Take only the first "word" of the user's input
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_netmask="$_input"
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_netmask="${_netmask%%[$IFS]*}"
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# Taint-check the user's input
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f_dialog_validate_netmask "$_netmask" && break
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done
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netmask="$_netmask"
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}
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############################################################ MAIN
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f_dprintf "%s: Successfully loaded." networking/netmask.subr
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fi # ! $_NETWORKING_NETMASK_SUBR
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