hestiacp/bin/v-change-sys-hostname

#!/bin/bash
# info: change hostname
# options: HOSTNAME
#
# example: v-change-sys-hostname mydomain.tld
#
# This function for changing system hostname.

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

# Argument definition
domain=$1

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

check_args '1' "$#" 'HOSTNAME'
is_format_valid 'domain'

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

current_hostname="$(hostname)"
if [[ "$current_hostname" == "$domain" ]]; then
        echo "Current hostname \"$current_hostname\" is the same as the new one you want to use"
        echo "I'm not going to change it"
        exit
fi

hostname "$domain"
if [ -d "/etc/sysconfig" ]; then
        # RHEL/CentOS/Amazon
        touch /etc/sysconfig/network
        if [ -z "$(grep HOSTNAME /etc/sysconfig/network)" ]; then
                echo "HOSTNAME='$domain'" >>/etc/sysconfig/network
        else
                sed -i "s/HOSTNAME=.*/HOSTNAME='$domain'/" /etc/sysconfig/network
        fi
else
        # Debian/Ubuntu
        hostnamectl set-hostname "$domain"
        echo "$domain" >/etc/hostname
fi

# Update webmail's password plugin configuration
if [ -d /etc/roundcube/ ]; then
        sed -i "/password_hestia_host/c\$rcmail_config['password_hestia_host'] = '$domain';" /etc/roundcube/plugins/password/config.inc.php
fi
if [ -d /etc/rainloop/ ]; then
        sed -i "/hestia_host/c\hestia_host = \"$domain\"" /etc/rainloop/data/_data_/_default_/configs/plugin-hestia-change-password.ini
fi
if [ -d /etc/snappymail/ ]; then
        sed -i "/\"hestia_host\":/c\\\"hestia_host\": \"$domain\"," /etc/snappymail/data/_data_/_default_/configs/plugin-change-password.json
fi

# Update /etc/hosts
if [ -f /etc/hosts ]; then
        if grep -q -E "^127\.0\.0\.1\s{1,}${current_hostname}$" /etc/hosts; then
                sed -i -E "s/127\.0\.0\.1\s{1,}${current_hostname}/127\.0\.0\.1 ${domain}/" /etc/hosts
        else
                echo "127.0.0.1 $domain" >>/etc/hosts
        fi
        # Check whether hostname entries are duplicated and remove all but the last one
        ndup_hosts="$(grep -c -E "^127\.0\.0\.1\s{1,}${domain}$" /etc/hosts)"
        if [[ "${ndup_hosts}" -gt "1" ]]; then
                nlines_to_del="$((ndup_hosts - 1))"
                lines_to_del="$(grep -n -E "^127\.0\.0\.1\s{1,}${domain}$" /etc/hosts | head -n${nlines_to_del} | awk -F ':' '{print $1}')"
                for i in $lines_to_del; do
                        if [[ -z $list_lines ]]; then
                                list_lines="${i}d"
                        else
                                list_lines+=";${i}d"
                        fi
                done
                sed -i "${list_lines}" /etc/hosts
        fi
fi

#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

# Logging
$BIN/v-log-action "system" "Warning" "System" "System hostname changed (Host: $domain)."
log_event "$OK" "$ARGUMENTS"

exit