Add script to get old release for migration testing

vagrant/migrationtest/migrationconfig-pre2012.json

@@ -1,10 +0,0 @@
-{
-	"dbhost": "127.0.0.1:3306",
-	"dbtype": "mysql",
-	"dbusername": "gochan",
-	"dbpassword": "gochan",
-	"olddbname": "gochan_pre2021_db",
-	"newdbname": "gochan",
-	"oldchan": "pre2021",
-	"tableprefix": "gc_"
-}

vagrant/migrationtest/pre2021/gochan-2.12.0-db.sql

@@ -3,8 +3,6 @@
 --
 
 CREATE DATABASE gochan_pre2021_db;
-GRANT ALL PRIVILEGES ON gochan_pre2021_db.* TO 'gochan'@'localhost';
-FLUSH PRIVILEGES;
 USE gochan_pre2021_db;
 
 CREATE TABLE `gc_announcements` (
@@ -190,3 +188,6 @@ INSERT INTO `gc_info` VALUES ('version','2.12.0');
 INSERT INTO `gc_posts` VALUES (1,1,0,'Name','3GqYIJ3Obs','email@site.com','Subject','message body','message body','df740f13f6c59841743598b2fd9a45c9','162450778130.jpg','60056568.jpg','02a3317c1e16d88e052c1b6c5f181cd2',32174,750,751,199,200,'172.27.0.1','','2021-06-24 04:09:41',0,'0000-00-00 00:00:00','2021-06-24 04:09:41',0,0,0);
 INSERT INTO `gc_sections` VALUES (1,0,0,'Main','main');
 INSERT INTO `gc_staff` VALUES (1,'admin','$2a$04$L8aNP6T4IAENeg6YzEI/EOG4JbotSTtC7TC.2rQu/z6aFixOu7c52',3,'*','2021-06-24 04:06:37','2021-06-24 04:08:12');
+
+GRANT ALL PRIVILEGES ON gochan_pre2021_db.* TO 'gochan'@'%';
+FLUSH PRIVILEGES;

vagrant/migrationtest/pre2021/pre2021-install.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+OLD_VERSION="2.12.0"
+OLD_GCDIR="gochan-v${OLD_VERSION}_linux"
+OLD_URL="https://github.com/gochan-org/gochan/releases/download/v$OLD_VERSION/$OLD_GCDIR.tar.gz"
+
+if [ "$USER" = "root" ]; then
+	echo "This testing script isn't intended to be run as root but will still probably run anyway."
+	read -p "Press enter to continue anyway or ctrl+c to exit
+"
+fi
+
+pgrep gochan > /dev/null
+if [ "$?" = "0" ]; then
+	cat - <<- EOF
+	A gochan instance is currently running. This script is intended for testing gochan migration,
+	so only one instance should be running at a time
+	EOF
+	exit 1
+fi
+
+
+if [ -z "$1" ] || [ "$1" = "install" ]; then
+	if [ -e ~/$OLD_GCDIR ]; then
+		echo "Previous release is already installed, run $0 uninstall && $0"
+		exit 1
+	fi
+	sudo mysql < /vagrant/vagrant/migrationtest/pre2021/gochan-${OLD_VERSION}-db.sql
+	cd ~
+	wget $OLD_URL
+	tar -xvf "$OLD_GCDIR.tar.gz"
+	rm "$OLD_GCDIR.tar.gz"
+	cd $OLD_GCDIR
+	cp sample-configs/gochan.example.json gochan.json
+
+	sed -i gochan.json \
+		-e 's/"Port": 8080/"Port": 9000/' \
+		-e 's/"UseFastCGI": false/"UseFastCGI": true/' \
+		-e "s/\"DBtype\": .*/\"DBtype\": \"mysql\",/" \
+		-e "s/\"DBname\": .*/\"DBname\": \"gochan_pre2021_db\",/" \
+		-e 's/"DBpassword": ""/"DBpassword": "gochan"/' \
+		-e 's/"Verbosity": 0/"Verbosity": 1/' \
+		-e 's/"DebugMode": false/"DebugMode": true/'
+
+	mv gochan{,_$OLD_VERSION}
+	mkdir -p html/test/{,res,src,thumb}
+	echo ""
+	echo "gochan v${OLD_VERSION} is ready to go. To start it, run"
+	echo "screen -S gochan_$OLD_VERSION"
+	echo "cd ~/$OLD_GCDIR"
+	echo "./gochan_$OLD_VERSION"
+elif [ "$1" = "uninstall" ]; then
+	sudo mysqladmin -f DROP gochan_pre2021_db
+	killall "gochan_$OLD_VERSION"; rm -rf ~/$OLD_GCDIR
+else
+	echo "Invalid argument. Usage is $1 [install|uninstall]"
+fi