diff options
Diffstat (limited to 'usr.sbin/bsdconfig/networking/share/hostname.subr')
| -rw-r--r-- | usr.sbin/bsdconfig/networking/share/hostname.subr | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/usr.sbin/bsdconfig/networking/share/hostname.subr b/usr.sbin/bsdconfig/networking/share/hostname.subr new file mode 100644 index 000000000000..811c6042ed93 --- /dev/null +++ b/usr.sbin/bsdconfig/networking/share/hostname.subr @@ -0,0 +1,161 @@ +if [ ! "$_NETWORKING_HOSTNAME_SUBR" ]; then _NETWORKING_HOSTNAME_SUBR=1 +# +# Copyright (c) 2006-2013 Devin Teske +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# +############################################################ INCLUDES + +BSDCFG_SHARE="/usr/share/bsdconfig" +. $BSDCFG_SHARE/common.subr || exit 1 +f_dprintf "%s: loading includes..." networking/hostname.subr +f_include $BSDCFG_SHARE/dialog.subr +f_include $BSDCFG_SHARE/networking/common.subr +f_include $BSDCFG_SHARE/networking/resolv.subr +f_include $BSDCFG_SHARE/sysrc.subr + +BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking" +f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr + +############################################################ FUNCTIONS + +# f_dialog_hnerror $error $hostname +# +# Display a msgbox with the appropriate error message for an error returned by +# the f_validate_hostname function. +# +f_dialog_hnerror() +{ + local error="$1" fqhn="$2" + + [ ${error:-0} -ne 0 ] || return $SUCCESS + + case "$error" in + 1) f_show_msg "$msg_hostname_label_contains_invalid_chars" "$fqhn" ;; + 2) f_show_msg \ + "$msg_hostname_label_starts_or_ends_with_hyphen" "$fqhn" ;; + 3) f_show_msg "$msg_hostname_label_is_null" "$fqhn" ;; + 63) f_show_msg "$msg_hostname_label_exceeds_max_length" "$fqhn" ;; + 255) f_show_msg "$msg_hostname_exceeds_max_length" "$fqhn" ;; + esac +} + +# f_dialog_validate_hostname $hostname +# +# Returns zero if the given argument (a fully-qualified hostname) is compliant +# with standards set-forth in RFC's 952 and 1123 of the Network Working Group: +# +# RFC 952 - DoD Internet host table specification +# https://tools.ietf.org/html/rfc952 +# +# RFC 1123 - Requirements for Internet Hosts - Application and Support +# https://tools.ietf.org/html/rfc1123 +# +# If the hostname is determined to be invalid, the appropriate error will be +# displayed using the f_dialog_hnerror function above. +# +f_dialog_validate_hostname() +{ + local fqhn="$1" + + f_validate_hostname "$fqhn" + local retval=$? + + # Produce an appropriate error message if necessary. + [ $retval -eq $SUCCESS ] || f_dialog_hnerror $retval "$fqhn" + + return $retval +} + +# f_dialog_input_hostname +# +# Edits the current hostname. +# +f_dialog_input_hostname() +{ + local funcname=f_dialog_input_hostname + local hostname="$( f_sysrc_get 'hostname:-$(hostname)' )" + local hostname_orig="$hostname" # for change-tracking + + local msg + if [ "$USE_XDIALOG" ]; then + msg="$xmsg_please_enter_fqhn" + else + msg="$msg_please_enter_fqhn" + fi + + # + # Loop until the user provides taint-free input. + # + while :; do + f_dialog_input hostname "$msg" "$hostname" \ + "$hline_alnum_punc_tab_enter" || return $? + # Taint-check the user's input + f_dialog_validate_hostname "$hostname" && break + done + + # + # Save hostname only if the user changed the hostname. + # + if [ "$hostname" != "$hostname_orig" ]; then + f_dialog_info "$msg_saving_hostname" + f_eval_catch $funcname f_sysrc_set \ + 'f_sysrc_set hostname "%s"' "$hostname" + fi + + # + # Update resolv.conf(5) search/domain directives + # + f_dialog_resolv_conf_update "$hostname" + + # + # Only ask to apply setting if the current hostname is different than + # the stored configuration (in rc.conf(5)). + # + if [ "$( hostname )" != "$( f_sysrc_get hostname )" ]; then + [ ! "$USE_XDIALOG" ] && f_dialog_clear + + # + # If connected via ssh(1) and performing X11-Forwarding, don't + # allow the hostname to be changed to prevent the fatal error + # "X11 connection rejected because of wrong authentication." + # + if [ "$USE_XDIALOG" -a "$SSH_CONNECTION" ]; then + f_show_msg "$msg_activate_hostname_x11warning" \ + "$( hostname )" "$hostname" + else + f_yesno "$msg_activate_hostname" \ + "$( hostname )" "$hostname" \ + && hostname "$hostname" + fi + fi + + return $DIALOG_OK +} + +############################################################ MAIN + +f_dprintf "%s: Successfully loaded." networking/hostname.subr + +fi # ! $_NETWORKING_HOSTNAME_SUBR |