641a6cfb86
deprecated sysinstall(8). NOTE: WITH_BSDCONFIG is currently required. Submitted by: Devin Teske (dteske), Ron McDowell <rcm@fuzzwad.org> Reviewed by: Ron McDowell <rcm@fuzzwad.org> Approved by: Ed Maste (emaste)
212 lines
6.4 KiB
Plaintext
212 lines
6.4 KiB
Plaintext
if [ ! "$_NETWORKING_HOSTNAME_SUBR" ]; then _NETWORKING_HOSTNAME_SUBR=1
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#
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# Copyright (c) 2006-2012 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 (INLUDING, 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_LIBE="/usr/libexec/bsdconfig"
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. $BSDCFG_LIBE/include/common.subr || exit 1
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f_include $BSDCFG_LIBE/include/sysrc.subr
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f_include $BSDCFG_LIBE/include/dialog.subr
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APP_DIR="120.networking"
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f_include $BSDCFG_LIBE/$APP_DIR/include/common.subr
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f_include $BSDCFG_LIBE/$APP_DIR/include/resolv.subr
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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_validate_hostname $hostname
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#
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# Returns zero if the given argument (a fully-qualified hostname) is compliant
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# with standards set-forth in RFC's 952 and 1123 of the Network Working Group:
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#
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# RFC 952 - DoD Internet host table specification
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# http://tools.ietf.org/html/rfc952
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#
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# RFC 1123 - Requirements for Internet Hosts - Application and Support
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# http://tools.ietf.org/html/rfc1123
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#
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# See http://en.wikipedia.org/wiki/Hostname for a brief overview.
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#
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# The return status for invalid hostnames is one of:
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# 255 Entire hostname exceeds the maximum length of 255 characters.
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# 63 One or more individual labels within the hostname (separated by
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# dots) exceeds the maximum of 63 characters.
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# 1 One or more individual labels within the hostname contains one
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# or more invalid characters.
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# 2 One or more individual labels within the hostname starts or
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# ends with a hyphen (hyphens are allowed, but a label cannot
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# begin or end with a hyphen).
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# 3 One or more individual labels within the hostname are null.
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#
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# If the hostname is determined to be invalid, the appropriate error will be
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# displayed using the f_dialog_msgbox function.
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#
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f_dialog_validate_hostname()
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{
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local fqhn="$1"
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( # Operate within a sub-shell to protect the parent environment
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# Return error if the hostname exceeds 255 characters
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[ ${#fqhn} -gt 255 ] && exit 255
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IFS="." # Split on `dot'
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for label in $fqhn; do
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# Return error if the label exceeds 63 characters
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[ ${#label} -gt 63 ] && exit 63
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# Return error if the label is null
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[ "$label" ] || exit 3
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# Return error if label begins/ends with dash
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case "$label" in
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-*|*-) exit 2
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esac
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# Return error if the label contains any invalid chars
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echo "$label" | grep -q '^[[:alnum:]-]*$' || exit 1
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done
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)
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#
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# Produce an appropriate error message if necessary.
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#
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local retval=$?
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case $retval in
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1) f_dialog_msgbox "$( printf \
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"$msg_hostname_label_contains_invalid_chars" "$fqhn" )";;
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2) f_dialog_msgbox "$( printf \
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"$msg_hostname_label_starts_or_ends_with_hyphen" "$fqhn" )";;
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3) f_dialog_msgbox "$( printf \
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"$msg_hostname_label_is_null" "$fqhn" )";;
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63) f_dialog_msgbox "$( printf \
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"$msg_hostname_label_exceeds_max_length" "$fqhn" )";;
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255) f_dialog_msgbox "$( printf \
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"$msg_hostname_exceeds_max_length" "$fqhn" )";;
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esac
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return $retval
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}
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# f_dialog_input_hostname
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#
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# Edits the current hostname.
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#
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f_dialog_input_hostname()
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{
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local hostname="$( f_sysrc_get 'hostname:-$(hostname)' )"
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local hostname_orig="$hostname" # for change-tracking
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local msg
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if [ "$USE_XDIALOG" ]; then
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msg="$xmsg_please_enter_fqhn"
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else
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msg="$msg_please_enter_fqhn"
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fi
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local hline="$hline_alnum_punc_tab_enter"
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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 size height width
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while :; do
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size=$( f_dialog_inputbox_size \
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"$DIALOG_TITLE" \
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"$DIALOG_BACKTITLE" \
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"$msg" \
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"$hostname" \
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"$hline" )
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eval $DIALOG \
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--title \"\$DIALOG_TITLE\" \
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--backtitle \"\$DIALOG_BACKTITLE\" \
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--hline \"\$hline\" \
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--ok-label \"\$msg_ok\" \
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--cancel-label \"\$msg_cancel\" \
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--inputbox \"\$msg\" $size \
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\"\$hostname\" \
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2> "$DIALOG_TMPDIR/dialog.inputbox.$$"
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local retval=$?
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hostname=$( f_dialog_inputstr )
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[ $retval -eq $SUCCESS ] || return $retval
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# Taint-check the user's input
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f_dialog_validate_hostname "$hostname" && break
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done
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#
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# Save hostname only if the user changed the hostname.
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#
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if [ "$hostname" != "$hostname_orig" ]; then
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f_dialog_info "$msg_saving_hostname"
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f_sysrc_set hostname "$hostname"
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fi
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#
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# Update resolv.conf(5) search/domain directives
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#
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f_dialog_resolv_conf_update "$hostname"
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#
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# Only ask to apply setting if the current hostname is different than
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# the stored configuration (in rc.conf(5)).
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#
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if [ "$( hostname )" != "$( f_sysrc_get hostname )" ]; then
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[ ! "$USE_XDIALOG" ] && dialog_clear
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#
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# If connected via ssh(1) and performing X11-Forwarding, don't
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# allow the hostname to be changed to prevent the fatal error
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# "X11 connection rejected because of wrong authentication."
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#
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if [ "$USE_XDIALOG" -a "$SSH_CONNECTION" ]; then
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f_dialog_msgbox "$(
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printf "$msg_activate_hostname_x11warning" \
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"$( hostname )" "$hostname"
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)"
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else
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f_dialog_yesno "$(
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printf "$msg_activate_hostname" \
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"$( hostname )" "$hostname" \
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)" \
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&& hostname "$hostname"
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fi
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fi
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return $SUCCESS
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}
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fi # ! $_NETWORKING_HOSTNAME_SUBR
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