From 32c898c6d2d5dd92c9d9d542067bed76ee3209d7 Mon Sep 17 00:00:00 2001
From: Love Billenius <lovebillenius@disroot.org>
Date: Fri, 12 Jul 2024 14:38:31 +0200
Subject: [PATCH] backup part

---
 backup-gitea.sh | 89 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 backup-gitea.sh

diff --git a/backup-gitea.sh b/backup-gitea.sh
new file mode 100644
index 0000000..5c00c7a
--- /dev/null
+++ b/backup-gitea.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+
+BACKUP_DIR="/mnt/hardestdrive/gitea-backup"
+LOG_DIR="/mnt/hardestdrive/gitea-backup-logs"
+DATA_DIR="/mnt/hardestdrive/gitea"
+DB_USER="root"
+DB_NAME="gitea"
+TIMESTAMP=$(date +"%Y%m%d-%H%M%S")
+DB_BACKUP_FILE="${BACKUP_DIR}/gitea-database-backup-${TIMESTAMP}.sql.zst"
+ARCHIVE_FILE="${BACKUP_DIR}/gitea-backup-${TIMESTAMP}.tar.zst"
+ENCRYPTED_DB_BACKUP_FILE="${DB_BACKUP_FILE}.enc"
+ENCRYPTED_ARCHIVE_FILE="${ARCHIVE_FILE}.enc"
+KEY_FILE="/mnt/hardestdrive/gitea-backup.key"
+REMOTE_USER="tom"
+REMOTE_HOST="nordicdatarefinement.com"
+REMOTE_PORT="23"
+REMOTE_DIR="/mnt/hdd/gitea-backup"
+
+REQUIRED_PROGRAMS=("rsync" "mysqldump" "zstd" "tar" "systemctl" "openssl")
+for prog in "${REQUIRED_PROGRAMS[@]}"; do
+    if ! command -v "$prog" &>/dev/null; then
+        echo "Error: $prog is not installed." >&2
+        exit 1
+    fi
+done
+
+if [[ ! -f "$KEY_FILE" ]]; then
+    printf "Key file doesn't exist at '%s'\n" "$KEY_FILE"
+    exit 1
+fi
+
+mkdir -p "${LOG_DIR}"
+log() {
+    local msg
+    msg="$(date +"%Y-%m-%d %H:%M:%S") $1"
+    echo "$msg" | tee -a "${LOG_DIR}/$TIMESTAMP.log"
+}
+
+log "Stopping Gitea service..."
+systemctl stop gitea
+
+log "Creating backup directories..."
+mkdir -p "$BACKUP_DIR"
+
+log "Creating archive of Gitea..."
+tar -cf - -C "${DATA_DIR}" . | zstd -o "${ARCHIVE_FILE}"
+
+log "Backing up MySQL database..."
+mysqldump --single-transaction -u "${DB_USER}" "${DB_NAME}" | zstd >"${DB_BACKUP_FILE}"
+if [ $? -ne 0 ]; then
+    log "Error during database backup."
+    systemctl start gitea
+    exit 1
+fi
+
+log "Starting Gitea service..."
+systemctl start gitea
+
+log "Encrypting the SQL dump..."
+openssl enc -aes-256-cbc -salt -pbkdf2 -in "${DB_BACKUP_FILE}" -out "${ENCRYPTED_DB_BACKUP_FILE}" -pass file:"${KEY_FILE}"
+# openssl enc -aes-256-cbc -d -pbkdf2 -in "${ENCRYPTED_DB_BACKUP_FILE}" -out "gitea-database-backup-${TIMESTAMP}.sql.zst" -pass file:"${KEY_FILE}"
+if [ $? -ne 0 ]; then
+    log "Error during SQL dump encryption."
+    exit 1
+fi
+rm "${DB_BACKUP_FILE}"
+
+log "Encrypting the tarball..."
+openssl enc -aes-256-cbc -salt -pbkdf2 -in "${ARCHIVE_FILE}" -out "${ENCRYPTED_ARCHIVE_FILE}" -pass file:"${KEY_FILE}"
+# openssl enc -aes-256-cbc -d -pbkdf2 -in "${ENCRYPTED_ARCHIVE_FILE}" -out "gitea-backup-${TIMESTAMP}.tar.zst" -pass file:"${KEY_FILE}"
+if [ $? -ne 0 ]; then
+    log "Error during tarball encryption."
+    exit 1
+fi
+rm "${ARCHIVE_FILE}"
+
+log "Gitea backup completed successfully and encrypted."
+
+log "Sending backups to remote server..."
+rsync -av --progress -e "ssh -p ${REMOTE_PORT}" "${ENCRYPTED_DB_BACKUP_FILE}" "${ENCRYPTED_ARCHIVE_FILE}" "${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_DIR}"
+if [ $? -ne 0 ]; then
+    log "Error during rsync to remote server."
+    exit 1
+fi
+
+log "Backups sent successfully."
+
+log "Removing dumps locally"
+rm -r "${BACKUP_DIR}"