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helpers/helpers.v1.d/mysql
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286
helpers/helpers.v1.d/mysql
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#!/usr/bin/env bash
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#
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# Copyright (c) 2024 YunoHost Contributors
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#
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# This file is part of YunoHost (see https://yunohost.org)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Open a connection as a user
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#
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# usage: ynh_mysql_connect_as --user=user --password=password [--database=database]
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# | arg: -u, --user= - the user name to connect as
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# | arg: -p, --password= - the user password
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# | arg: -d, --database= - the database to connect to
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#
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# examples:
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# ynh_mysql_connect_as --user="user" --password="pass" <<< "UPDATE ...;"
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# ynh_mysql_connect_as --user="user" --password="pass" < /path/to/file.sql
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_connect_as() {
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# Declare an array to define the options of this helper.
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local legacy_args=upd
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local -A args_array=([u]=user= [p]=password= [d]=database=)
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local user
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local password
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local database
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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database="${database:-}"
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mysql --user="$user" --password="$password" --batch "$database"
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}
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# Execute a command as root user
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#
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# usage: ynh_mysql_execute_as_root --sql=sql [--database=database]
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# | arg: -s, --sql= - the SQL command to execute
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# | arg: -d, --database= - the database to connect to
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_execute_as_root() {
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# Declare an array to define the options of this helper.
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local legacy_args=sd
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local -A args_array=([s]=sql= [d]=database=)
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local sql
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local database
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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database="${database:-}"
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if [ -n "$database" ]; then
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database="--database=$database"
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fi
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mysql -B "$database" <<< "$sql"
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}
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# Execute a command from a file as root user
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#
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# usage: ynh_mysql_execute_file_as_root --file=file [--database=database]
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# | arg: -f, --file= - the file containing SQL commands
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# | arg: -d, --database= - the database to connect to
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_execute_file_as_root() {
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# Declare an array to define the options of this helper.
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local legacy_args=fd
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local -A args_array=([f]=file= [d]=database=)
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local file
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local database
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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database="${database:-}"
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if [ -n "$database" ]; then
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database="--database=$database"
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fi
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mysql -B "$database" < "$file"
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}
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# Create a database and grant optionnaly privilegies to a user
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#
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# [internal]
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#
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# usage: ynh_mysql_create_db db [user [pwd]]
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# | arg: db - the database name to create
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# | arg: user - the user to grant privilegies
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# | arg: pwd - the password to identify user by
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_create_db() {
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local db=$1
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local sql="CREATE DATABASE ${db};"
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# grant all privilegies to user
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if [[ $# -gt 1 ]]; then
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sql+=" GRANT ALL PRIVILEGES ON ${db}.* TO '${2}'@'localhost'"
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if [[ -n ${3:-} ]]; then
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sql+=" IDENTIFIED BY '${3}'"
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fi
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sql+=" WITH GRANT OPTION;"
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fi
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ynh_mysql_execute_as_root --sql="$sql"
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}
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# Drop a database
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#
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# [internal]
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#
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# If you intend to drop the database *and* the associated user,
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# consider using ynh_mysql_remove_db instead.
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#
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# usage: ynh_mysql_drop_db db
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# | arg: db - the database name to drop
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_drop_db() {
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ynh_mysql_execute_as_root --sql="DROP DATABASE ${1};"
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}
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# Dump a database
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#
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# usage: ynh_mysql_dump_db --database=database
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# | arg: -d, --database= - the database name to dump
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# | ret: The mysqldump output
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#
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# example: ynh_mysql_dump_db --database=roundcube > ./dump.sql
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_dump_db() {
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# Declare an array to define the options of this helper.
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local legacy_args=d
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local -A args_array=([d]=database=)
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local database
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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mysqldump --single-transaction --skip-dump-date --routines "$database"
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}
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# Create a user
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#
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# [internal]
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#
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# usage: ynh_mysql_create_user user pwd [host]
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# | arg: user - the user name to create
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# | arg: pwd - the password to identify user by
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_create_user() {
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ynh_mysql_execute_as_root \
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--sql="CREATE USER '${1}'@'localhost' IDENTIFIED BY '${2}';"
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}
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# Check if a mysql user exists
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#
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# [internal]
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#
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# usage: ynh_mysql_user_exists --user=user
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# | arg: -u, --user= - the user for which to check existence
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# | ret: 0 if the user exists, 1 otherwise.
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_user_exists() {
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# Declare an array to define the options of this helper.
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local legacy_args=u
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local -A args_array=([u]=user=)
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local user
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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if [[ -z $(ynh_mysql_execute_as_root --sql="SELECT User from mysql.user WHERE User = '$user';") ]]; then
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return 1
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else
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return 0
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fi
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}
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# Check if a mysql database exists
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#
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# [internal]
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#
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# usage: ynh_mysql_database_exists database
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# | arg: database - the database for which to check existence
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# | exit: Return 1 if the database doesn't exist, 0 otherwise
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#
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ynh_mysql_database_exists() {
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local database=$1
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mysqlshow | grep -qE "^|\s+$database\s+|"
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}
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# Drop a user
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#
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# [internal]
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#
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# usage: ynh_mysql_drop_user user
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# | arg: user - the user name to drop
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#
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# Requires YunoHost version 2.2.4 or higher.
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ynh_mysql_drop_user() {
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ynh_mysql_execute_as_root --sql="DROP USER '${1}'@'localhost';"
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}
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# Create a database, an user and its password. Then store the password in the app's config
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#
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# [packagingv1]
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#
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# usage: ynh_mysql_setup_db --db_user=user --db_name=name [--db_pwd=pwd]
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# | arg: -u, --db_user= - Owner of the database
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# | arg: -n, --db_name= - Name of the database
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# | arg: -p, --db_pwd= - Password of the database. If not provided, a password will be generated
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#
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# After executing this helper, the password of the created database will be available in `$db_pwd`
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# It will also be stored as "`mysqlpwd`" into the app settings.
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#
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# Requires YunoHost version 2.6.4 or higher.
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ynh_mysql_setup_db() {
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# Declare an array to define the options of this helper.
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local legacy_args=unp
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local -A args_array=([u]=db_user= [n]=db_name= [p]=db_pwd=)
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local db_user
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local db_name
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db_pwd=""
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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# Generate a random password
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local new_db_pwd=$(ynh_string_random)
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# If $db_pwd is not provided, use new_db_pwd instead for db_pwd
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db_pwd="${db_pwd:-$new_db_pwd}"
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# Dirty patch for super-legacy apps
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dpkg --list | grep -q "^ii mariadb-server" || {
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ynh_print_warn "Packager: you called ynh_mysql_setup_db without declaring a dependency to mariadb-server. Please add it to your apt dependencies !"
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ynh_apt install mariadb-server
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}
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ynh_mysql_create_db "$db_name" "$db_user" "$db_pwd"
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ynh_app_setting_set --app=$app --key=mysqlpwd --value=$db_pwd
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}
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# Remove a database if it exists, and the associated user
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#
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# [packagingv1]
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#
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# usage: ynh_mysql_remove_db --db_user=user --db_name=name
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# | arg: -u, --db_user= - Owner of the database
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# | arg: -n, --db_name= - Name of the database
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#
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# Requires YunoHost version 2.6.4 or higher.
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ynh_mysql_remove_db() {
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# Declare an array to define the options of this helper.
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local legacy_args=un
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local -Ar args_array=([u]=db_user= [n]=db_name=)
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local db_user
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local db_name
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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if ynh_mysql_database_exists "$db_name"; then
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ynh_mysql_drop_db $db_name
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else
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ynh_print_warn --message="Database $db_name not found"
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fi
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# Remove mysql user if it exists
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if ynh_mysql_user_exists --user=$db_user; then
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ynh_mysql_drop_user $db_user
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fi
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}
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