#!/bin/bash
# info: add ftp account for web domain.
# options: USER DOMAIN FTP_USER FTP_PASSWORD [FTP_PATH]
#
# example: v-add-web-domain-ftp alice wonderland.com alice_ftp p4$$vvOrD
#
# This function creates additional ftp account for web domain.

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

# Argument definition
user=$1
domain=$2
domain_idn=$2
ftp_user=${1}_${3}
password=$4
HIDE=4
ftp_path=$5

# 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
# shellcheck source=/usr/local/hestia/func/domain.sh
source $HESTIA/func/domain.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

# Additional argument formatting
format_domain
format_domain_idn
# TODO: $domain_idn not used in this script - maybe $domain should be converted to $doman_idn ?

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

check_args '4' "$#" 'USER DOMAIN FTP_USER FTP_PASSWORD [FTP_PATH]'
is_format_valid 'user' 'domain' 'ftp_user'
is_system_enabled "$WEB_SYSTEM" 'WEB_SYSTEM'
is_object_valid 'user' 'USER' "$user"
is_object_unsuspended 'user' 'USER' "$user"
is_object_valid 'web' 'DOMAIN' "$domain"
is_object_unsuspended 'web' 'DOMAIN' "$domain"
check_ftp_user=$(grep "^$ftp_user:" /etc/passwd)
if [ -n "$check_ftp_user" ] && [ "$FTP_USER" != "$ftp_user" ]; then
	echo "Error: ftp user $ftp_user already exists"
	log_event "$E_EXISTS" "$ARGUMENTS"
	exit "$E_EXISTS"
fi
is_password_valid

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

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

# Get domain values
get_domain_values 'web'

# Defining ftp user shell
shell=$(which nologin)
if [ -n "$FTP_SHELL" ]; then
	shell=$FTP_SHELL
fi

# Defining path
if [ -z "$ftp_path" ]; then
	ftp_path_a="$HOMEDIR/$user/web/$domain"
else
	# Validating absolute path
	ftp_path_a=$(readlink -f "$HOMEDIR/$user/web/$domain/$ftp_path")
	if [ -z "$(echo $ftp_path_a | grep $HOMEDIR/$user/web/$domain)" ]; then
		echo "Error: absolute path $ftp_path_a is invalid"
		log_event "$E_INVALID" "$ARGUMENTS"
		exit "$E_INVALID"
	fi
	# Creating ftp user home directory
	if [ ! -e "$ftp_path_a" ]; then
		$BIN/v-add-fs-directory "$user" "$ftp_path_a"
		chown $user:$user "$ftp_path_a"
		chmod 751 "$ftp_path_a"
	fi
fi

# Adding ftp user
/usr/sbin/useradd $ftp_user \
	-s $shell \
	-o -u $(id -u $user) \
	-g $(id -g $user) \
	-G hestia-users \
	-M -d "$ftp_path_a" > /dev/null 2>&1

# Set ftp user password
echo "$ftp_user:$password" | /usr/sbin/chpasswd

if [ $? -ne 0 ]; then
	# Delete user on failure again
	/usr/sbin/deluser "$ftp_user" > /dev/null 2>&1
	echo "Error: Password not accepted due to PAM restrictions"
	exit 2
fi

ftp_md5=$(awk -v user=$ftp_user -F : 'user == $1 {print $2}' /etc/shadow)

# Adding jailed sftp env
$BIN/v-add-user-sftp-jail "$ftp_user"

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

# Transforming absolute path to relative
ftp_path_r=$(echo $ftp_path_a | sed "s%$HOMEDIR/$user/web/$domain%%")

# Concatenating ftp variables
if [ ! -z "$FTP_USER" ]; then
	ftp_user="$FTP_USER:$ftp_user"
	ftp_md5="$FTP_MD5:$ftp_md5"
	ftp_path="$FTP_PATH:$ftp_path_r"
fi

# Adding new key into web.conf
add_object_key "web" 'DOMAIN' "$domain" 'FTP_PATH' 'PROXY'

# Updating config
update_object_value 'web' 'DOMAIN' "$domain" '$FTP_USER' "$ftp_user"
update_object_value 'web' 'DOMAIN' "$domain" '$FTP_MD5' "$ftp_md5"
update_object_value 'web' 'DOMAIN' "$domain" '$FTP_PATH' "$ftp_path"

# Logging
$BIN/v-log-action "$user" "Info" "Web" "Added new FTP account (Name: ${1}_${3}@$domain)."
log_event "$OK" "$ARGUMENTS"

exit