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mariadb-secure-installation
#!/bin/sh # Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; version 2 of the License. # # 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 General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA config=".my.cnf.$$" command=".mysql.$$" output=".my.output.$$" trap "interrupt" 1 2 3 6 15 rootpass="" echo_n= echo_c= basedir= defaults_file= defaults_extra_file= defaults_group_suffix= no_defaults= case "$0" in *mysql_secure_installation) echo "$0: Deprecated program name. It will be removed in a future release, use 'mariadb-secure-installation' instead" 1>&2 ;; esac parse_arg() { echo "$1" | sed -e 's/^[^=]*=//' } parse_arguments() { # We only need to pass arguments through to the server if we don't # handle them here. So, we collect unrecognized options (passed on # the command line) into the args variable. pick_args= if test "$1" = PICK-ARGS-FROM-ARGV then pick_args=1 shift fi for arg do case "$arg" in --basedir=*) basedir=`parse_arg "$arg"` ;; --defaults-file=*) defaults_file="$arg" ;; --defaults-extra-file=*) defaults_extra_file="$arg" ;; --defaults-group-suffix=*) defaults_group_suffix="$arg" ;; --no-defaults) no_defaults="$arg" ;; *) if test -n "$pick_args" then # This sed command makes sure that any special chars are quoted, # so the arg gets passed exactly to the server. # XXX: This is broken; true fix requires using eval and proper # quoting of every single arg ($basedir, $ldata, etc.) #args="$args "`echo "$arg" | sed -e 's,\([^a-zA-Z0-9_.-]\),\\\\\1,g'` args="$args $arg" fi ;; esac done } # Try to find a specific file within --basedir which can either be a binary # release or installed source directory and return the path. find_in_basedir() { return_dir=0 found=0 case "$1" in --dir) return_dir=1; shift ;; esac file=$1; shift for dir in "$@" do if test -f "$basedir/$dir/$file" then found=1 if test $return_dir -eq 1 then echo "$basedir/$dir" else echo "$basedir/$dir/$file" fi break fi done if test $found -eq 0 then # Test if command is in PATH $file --no-defaults --version > /dev/null 2>&1 status=$? if test $status -eq 0 then echo $file fi fi } cannot_find_file() { echo echo "FATAL ERROR: Could not find $1" shift if test $# -ne 0 then echo echo "The following directories were searched:" echo for dir in "$@" do echo " $dir" done fi echo echo "If you compiled from source, you need to run 'make install' to" echo "copy the software into the correct location ready for operation." echo echo "If you are using a binary release, you must either be at the top" echo "level of the extracted archive, or pass the --basedir option" echo "pointing to that location." echo } # Ok, let's go. We first need to parse arguments which are required by # my_print_defaults so that we can execute it first, then later re-parse # the command line to add any extra bits that we need. parse_arguments PICK-ARGS-FROM-ARGV "$@" # # We can now find my_print_defaults. This script supports: # # --srcdir=path pointing to compiled source tree # --basedir=path pointing to installed binary location # # or default to compiled-in locations. # if test -n "$basedir" then print_defaults=`find_in_basedir my_print_defaults bin extra` echo "print: $print_defaults" if test -z "$print_defaults" then cannot_find_file my_print_defaults $basedir/bin $basedir/extra exit 1 fi mysql_command=`find_in_basedir mariadb bin` if test -z "$mysql_command" then cannot_find_file mariadb $basedir/bin exit 1 fi else print_defaults="/usr/bin/my_print_defaults" mysql_command="/usr/bin/mariadb" fi if test ! -x "$print_defaults" then cannot_find_file "$print_defaults" exit 1 fi if test ! -x "$mysql_command" then cannot_find_file "$mysql_command" exit 1 fi # Now we can get arguments from the group [client] and [client-server] # in the my.cfg file, then re-run to merge with command line arguments. parse_arguments `$print_defaults $defaults_file $defaults_extra_file $defaults_group_suffix $no_defaults client client-server client-mariadb` parse_arguments PICK-ARGS-FROM-ARGV "$@" set_echo_compat() { case `echo "testing\c"`,`echo -n testing` in *c*,-n*) echo_n= echo_c= ;; *c*,*) echo_n=-n echo_c= ;; *) echo_n= echo_c='\c' ;; esac } validate_reply () { ret=0 if [ -z "$1" ]; then reply=y return $ret fi case $1 in y|Y|yes|Yes|YES) reply=y ;; n|N|no|No|NO) reply=n ;; *) ret=1 ;; esac return $ret } prepare() { umask 0077 touch $config $command $output } do_query() { echo "$1" >$command #sed 's,^,> ,' < $command # Debugging $mysql_command --defaults-file=$config $defaults_extra_file $no_defaults $args <$command >$output return $? } # Simple escape mechanism (\-escape any ' and \), suitable for two contexts: # - single-quoted SQL strings # - single-quoted option values on the right hand side of = in my.cnf # # These two contexts don't handle escapes identically. SQL strings allow # quoting any character (\C => C, for any C), but my.cnf parsing allows # quoting only \, ' or ". For example, password='a\b' quotes a 3-character # string in my.cnf, but a 2-character string in SQL. # # This simple escape works correctly in both places. basic_single_escape () { # The quoting on this sed command is a bit complex. Single-quoted strings # don't allow *any* escape mechanism, so they cannot contain a single # quote. The string sed gets (as argv[1]) is: s/\(['\]\)/\\\1/g # # Inside a character class, \ and ' are not special, so the ['\] character # class is balanced and contains two characters. echo "$1" | sed 's/\(['"'"'\]\)/\\\1/g' } # # create a simple my.cnf file to be able to pass the root password to the mysql # client without putting it on the command line # make_config() { echo "# mysql_secure_installation config file" >$config echo "[mysql]" >>$config echo "user=root" >>$config esc_pass=`basic_single_escape "$rootpass"` echo "password='$esc_pass'" >>$config #sed 's,^,> ,' < $config # Debugging if test -n "$defaults_file" then dfile=`parse_arg "$defaults_file"` cat "$dfile" >>$config fi } get_root_password() { status=1 while [ $status -eq 1 ]; do stty -echo echo $echo_n "Enter current password for root (enter for none): $echo_c" read password echo stty echo if [ "x$password" = "x" ]; then emptypass=1 else emptypass=0 fi rootpass=$password make_config do_query "show create user root@localhost" status=$? done if grep -q unix_socket $output; then emptypass=0 fi echo "OK, successfully used password, moving on..." echo } set_root_password() { stty -echo echo $echo_n "New password: $echo_c" read password1 echo echo $echo_n "Re-enter new password: $echo_c" read password2 echo stty echo if [ "$password1" != "$password2" ]; then echo "Sorry, passwords do not match." echo return 1 fi if [ "$password1" = "" ]; then echo "Sorry, you can't use an empty password here." echo return 1 fi esc_pass=`basic_single_escape "$password1"` do_query "UPDATE mysql.global_priv SET priv=json_set(priv, '$.plugin', 'mysql_native_password', '$.authentication_string', PASSWORD('$esc_pass')) WHERE User='root';" if [ $? -eq 0 ]; then echo "Password updated successfully!" echo "Reloading privilege tables.." reload_privilege_tables if [ $? -eq 1 ]; then clean_and_exit fi echo rootpass=$password1 make_config else echo "Password update failed!" clean_and_exit fi return 0 } remove_anonymous_users() { do_query "DELETE FROM mysql.global_priv WHERE User='';" if [ $? -eq 0 ]; then echo " ... Success!" else echo " ... Failed!" clean_and_exit fi return 0 } remove_remote_root() { do_query "DELETE FROM mysql.global_priv WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');" if [ $? -eq 0 ]; then echo " ... Success!" else echo " ... Failed!" fi } remove_test_database() { echo " - Dropping test database..." do_query "DROP DATABASE IF EXISTS test;" if [ $? -eq 0 ]; then echo " ... Success!" else echo " ... Failed! Not critical, keep moving..." fi echo " - Removing privileges on test database..." do_query "DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%'" if [ $? -eq 0 ]; then echo " ... Success!" else echo " ... Failed! Not critical, keep moving..." fi return 0 } reload_privilege_tables() { do_query "FLUSH PRIVILEGES;" if [ $? -eq 0 ]; then echo " ... Success!" return 0 else echo " ... Failed!" return 1 fi } interrupt() { echo echo "Aborting!" echo cleanup stty echo exit 1 } cleanup() { echo "Cleaning up..." rm -f $config $command $output } # Remove the files before exiting. clean_and_exit() { cleanup exit 1 } # The actual script starts here prepare set_echo_compat echo echo "NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB" echo " SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!" echo echo "In order to log into MariaDB to secure it, we'll need the current" echo "password for the root user. If you've just installed MariaDB, and" echo "haven't set the root password yet, you should just press enter here." echo get_root_password # # Set the root password # echo "Setting the root password or using the unix_socket ensures that nobody" echo "can log into the MariaDB root user without the proper authorisation." echo while true ; do if [ $emptypass -eq 1 ]; then echo $echo_n "Enable unix_socket authentication? [Y/n] $echo_c" else echo "You already have your root account protected, so you can safely answer 'n'." echo echo $echo_n "Switch to unix_socket authentication [Y/n] $echo_c" fi read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else emptypass=0 do_query "UPDATE mysql.global_priv SET priv=json_set(priv, '$.password_last_changed', UNIX_TIMESTAMP(), '$.plugin', 'mysql_native_password', '$.authentication_string', 'invalid', '$.auth_or', json_array(json_object(), json_object('plugin', 'unix_socket'))) WHERE User='root';" if [ $? -eq 0 ]; then echo "Enabled successfully!" echo "Reloading privilege tables.." reload_privilege_tables if [ $? -eq 1 ]; then clean_and_exit fi echo else echo "Failed!" clean_and_exit fi fi echo while true ; do if [ $emptypass -eq 1 ]; then echo $echo_n "Set root password? [Y/n] $echo_c" else echo "You already have your root account protected, so you can safely answer 'n'." echo echo $echo_n "Change the root password? [Y/n] $echo_c" fi read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else status=1 while [ $status -eq 1 ]; do set_root_password status=$? done fi echo # # Remove anonymous users # echo "By default, a MariaDB installation has an anonymous user, allowing anyone" echo "to log into MariaDB without having to have a user account created for" echo "them. This is intended only for testing, and to make the installation" echo "go a bit smoother. You should remove them before moving into a" echo "production environment." echo while true ; do echo $echo_n "Remove anonymous users? [Y/n] $echo_c" read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else remove_anonymous_users fi echo # # Disallow remote root login # echo "Normally, root should only be allowed to connect from 'localhost'. This" echo "ensures that someone cannot guess at the root password from the network." echo while true ; do echo $echo_n "Disallow root login remotely? [Y/n] $echo_c" read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else remove_remote_root fi echo # # Remove test database # echo "By default, MariaDB comes with a database named 'test' that anyone can" echo "access. This is also intended only for testing, and should be removed" echo "before moving into a production environment." echo while true ; do echo $echo_n "Remove test database and access to it? [Y/n] $echo_c" read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else remove_test_database fi echo # # Reload privilege tables # echo "Reloading the privilege tables will ensure that all changes made so far" echo "will take effect immediately." echo while true ; do echo $echo_n "Reload privilege tables now? [Y/n] $echo_c" read reply validate_reply $reply && break done if [ "$reply" = "n" ]; then echo " ... skipping." else reload_privilege_tables fi echo cleanup echo echo "All done! If you've completed all of the above steps, your MariaDB" echo "installation should now be secure." echo echo "Thanks for using MariaDB!"
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