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diff --git a/scripts/db_migrations/version4.sh b/scripts/db_migrations/version4.sh
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+#!/bin/sh
+# LibreSSL - CAcert web application
+# Copyright (C) 2004-2011  CAcert Inc.
+#
+# 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+
+# script to do database migrations
+
+# This particular version migrates from the preversioned state to version 1
+# If you want to reuse it for further migrations you probably should pay special
+# attention because you have to adjust it a bit
+
+set -e # script fails if any command fails
+
+STDIN=0
+STDOUT=1
+STDERR=2
+
+if [ "$1" = "--help" ]; then
+	cat >&$STDERR <<- USAGE
+		Usage: $0 [MYSQL_OPTIONS]
+		You have to specify all options needed by "mysql" as if you had started
+		the MySQL command line client directly (including the name of the
+		database to operate on). The MySQL user used has to have enough
+		privileges to do all necessary operations (among others CREATE, ALTER,
+		DROP, UPDATE, INSERT, DELETE).
+		You might need to enter the mysql password multiple times if you
+		specify the -p option.
+	USAGE
+	exit 1
+fi
+
+mysql_opt=" --batch --skip-column-names $@"
+
+schema_version=$( mysql $mysql_opt <<- 'SQL'
+
+	SELECT MAX(`version`) FROM `schema_version`;
+SQL
+)
+if [ $schema_version != 3 ]; then
+	cat >&$STDERR <<- ERROR
+		Error: database schema is not in the right version to do the migration!
+		Expected version: 3
+	ERROR
+	exit 2
+fi
+
+mysql $mysql_opt <<- 'SQL'
+
+-- dump table AdminLog
+SELECT *
+  INTO OUTFILE "adminlog_table_backup_1135"
+  FIELDS TERMINATED BY ','
+  OPTIONALLY ENCLOSED BY '"'
+  LINES TERMINATED BY "\n"
+  FROM `adminlog`;
+SQL
+
+
+echo "Dump table create in adminlog_table_backup_1135"
+
+
+mysql $mysql_opt <<- 'SQL'
+-- update table admin log
+
+UPDATE `adminlog` SET `type` = 'old name or dob change',
+`information` = 'see adminlog_table_backup_1135';
+
+-- alter table admin log
+
+ALTER TABLE `adminlog`
+  DROP `old-lname`,
+  DROP `old-dob`,
+  DROP `new-lname`,
+  DROP `new-dob`;
+
+
+	-- Update schema version number
+	INSERT INTO `schema_version`
+		(`version`, `when`) VALUES
+		('4'      , NOW() );
+SQL
+
+
+echo "Database successfully migrated to version 4"
+exit 0
+