freedombone/src/freedombone-utils-validation

#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Validation functions
#
# License
# =======
#
# Copyright (C) 2014-2016 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# If this file exists it contains a global password used with
# disk image installs. This simplifies password management for
# deployment at scale

function validate_domain_name {
    # count the number of dots in the domain name
    dots=${TEST_DOMAIN_NAME//[^.]}
    no_of_dots=${#dots}
    if (( no_of_dots > 3 )); then
        TEST_DOMAIN_NAME="The domain $TEST_DOMAIN_NAME has too many subdomains. It should be of the type w.x.y.z, x.y.z or y.z"
    fi
    if (( no_of_dots == 0 )); then
        TEST_DOMAIN_NAME="The domain $TEST_DOMAIN_NAME has no top level domain. It should be of the type w.x.y.z, x.y.z or y.z"
    fi
}

function validate_freedns_code {
    freedns_code="$1"

    FREEDNS_MESSAGE=$"Please enter the FreeDNS code for this domain.\n\nThe code can be found by going to https://freedns.afraid.org, selecting 'Dynamic DNS' and then opening 'Wget example'. The code will consist of letters and numbers and be between the ? and = characters."

    if [[ "$freedns_code" == *"."* || "$freedns_code" == "http"* || "$freedns_code" == *"wget "* || "$freedns_code" == *" "* ]]; then
        dialog --title $"Invalid FreeDNS Code" --msgbox "$FREEDNS_MESSAGE" 10 70
        VALID_CODE=
    fi
    if [ ${#freedns_code} -lt 30 ]; then
        dialog --title $"Invalid FreeDNS Code" --msgbox $'FreeDNS code is too short. Did you enter the entire code?' 6 70
        VALID_CODE=
    fi
    VALID_CODE='yes'
}

function is_valid_user {
    USRNAME="$1"
    if [[ "$USRNAME" != "turtl" && "$USRNAME" != "znc" && "$USRNAME" != "pihole" && "$USRNAME" != "fbone" && "$USRNAME" != "go" && "$USRNAME" != "gogs" && "$USRNAME" != "git" && "$USRNAME" != "sync" && "$USRNAME" != "tahoelafs" ]]; then
        echo "1"
    else
        echo "0"
    fi
}

# NOTE: deliberately no exit 0