discourse/app/controllers/admin/backups_controller.rb

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# frozen_string_literal: true
require "backup_restore/backup_restore"
require "backup_restore/backup_store"
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class Admin::BackupsController < Admin::AdminController
before_action :ensure_backups_enabled
skip_before_action :check_xhr, only: [:index, :show, :logs, :check_backup_chunk, :upload_backup_chunk]
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def index
respond_to do |format|
format.html do
store_preloaded("operations_status", MultiJson.dump(BackupRestore.operations_status))
store_preloaded("logs", MultiJson.dump(BackupRestore.logs))
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render "default/empty"
end
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format.json do
store = BackupRestore::BackupStore.create
begin
render_serialized(store.files, BackupFileSerializer)
rescue BackupRestore::BackupStore::StorageError => e
render_json_error(e)
end
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end
end
end
def status
render_json_dump(BackupRestore.operations_status)
end
def create
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opts = {
publish_to_message_bus: true,
with_uploads: params.fetch(:with_uploads) == "true",
client_id: params[:client_id],
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}
BackupRestore.backup!(current_user.id, opts)
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rescue BackupRestore::OperationRunningError
render_error("backup.operation_already_running")
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else
StaffActionLogger.new(current_user).log_backup_create
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render json: success_json
end
def cancel
BackupRestore.cancel!
rescue BackupRestore::OperationRunningError
render_error("backup.operation_already_running")
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else
render json: success_json
end
def email
store = BackupRestore::BackupStore.create
if store.file(params.fetch(:id)).present?
Jobs.enqueue(
:download_backup_email,
user_id: current_user.id,
backup_file_path: url_for(controller: 'backups', action: 'show')
)
render body: nil
else
render body: nil, status: 404
end
end
def show
if !EmailBackupToken.compare(current_user.id, params.fetch(:token))
@error = I18n.t('download_backup_mailer.no_token')
return render template: 'admin/backups/show.html.erb', layout: 'no_ember', status: 422
end
store = BackupRestore::BackupStore.create
if backup = store.file(params.fetch(:id), include_download_source: true)
EmailBackupToken.del(current_user.id)
StaffActionLogger.new(current_user).log_backup_download(backup)
if store.remote?
redirect_to backup.source
else
headers['Content-Length'] = File.size(backup.source).to_s
send_file backup.source
end
else
render body: nil, status: 404
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end
end
def destroy
store = BackupRestore::BackupStore.create
if backup = store.file(params.fetch(:id))
StaffActionLogger.new(current_user).log_backup_destroy(backup)
store.delete_file(backup.filename)
render body: nil
else
render body: nil, status: 404
end
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end
def logs
store_preloaded("operations_status", MultiJson.dump(BackupRestore.operations_status))
store_preloaded("logs", MultiJson.dump(BackupRestore.logs))
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render "default/empty"
end
def restore
opts = {
filename: params.fetch(:id),
client_id: params.fetch(:client_id),
publish_to_message_bus: true,
}
BackupRestore.restore!(current_user.id, opts)
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rescue BackupRestore::OperationRunningError
render_error("backup.operation_already_running")
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else
render json: success_json
end
def rollback
BackupRestore.rollback!
rescue BackupRestore::OperationRunningError
render_error("backup.operation_already_running")
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else
render json: success_json
end
def readonly
enable = params.fetch(:enable).to_s == "true"
readonly_mode_key = Discourse::USER_READONLY_MODE_KEY
if enable
Discourse.enable_readonly_mode(readonly_mode_key)
else
Discourse.disable_readonly_mode(readonly_mode_key)
end
StaffActionLogger.new(current_user).log_change_readonly_mode(enable)
render body: nil
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end
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def check_backup_chunk
identifier = params.fetch(:resumableIdentifier)
filename = params.fetch(:resumableFilename)
chunk_number = params.fetch(:resumableChunkNumber)
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current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
# path to chunk file
chunk = BackupRestore::LocalBackupStore.chunk_path(identifier, filename, chunk_number)
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# check chunk upload status
status = HandleChunkUpload.check_chunk(chunk, current_chunk_size: current_chunk_size)
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render body: nil, status: status
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end
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def upload_backup_chunk
filename = params.fetch(:resumableFilename)
total_size = params.fetch(:resumableTotalSize).to_i
return render status: 415, plain: I18n.t("backup.backup_file_should_be_tar_gz") unless valid_extension?(filename)
return render status: 415, plain: I18n.t("backup.not_enough_space_on_disk") unless has_enough_space_on_disk?(total_size)
return render status: 415, plain: I18n.t("backup.invalid_filename") unless valid_filename?(filename)
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file = params.fetch(:file)
identifier = params.fetch(:resumableIdentifier)
chunk_number = params.fetch(:resumableChunkNumber).to_i
chunk_size = params.fetch(:resumableChunkSize).to_i
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current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
# path to chunk file
chunk = BackupRestore::LocalBackupStore.chunk_path(identifier, filename, chunk_number)
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# upload chunk
HandleChunkUpload.upload_chunk(chunk, file: file)
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uploaded_file_size = chunk_number * chunk_size
# when all chunks are uploaded
if uploaded_file_size + current_chunk_size >= total_size
# merge all the chunks in a background thread
Jobs.enqueue_in(5.seconds, :backup_chunks_merger, filename: filename, identifier: identifier, chunks: chunk_number)
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end
render body: nil
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end
def create_upload_url
params.require(:filename)
filename = params.fetch(:filename)
return render_json_error(I18n.t("backup.backup_file_should_be_tar_gz")) unless valid_extension?(filename)
return render_json_error(I18n.t("backup.invalid_filename")) unless valid_filename?(filename)
store = BackupRestore::BackupStore.create
begin
upload_url = store.generate_upload_url(filename)
rescue BackupRestore::BackupStore::BackupFileExists
return render_json_error(I18n("backup.file_exists"))
rescue BackupRestore::BackupStore::StorageError => e
return render_json_error(e)
end
render json: success_json.merge(url: upload_url)
end
private
def has_enough_space_on_disk?(size)
`df -Pk #{Rails.root}/public/backups | awk 'NR==2 {print $4 * 1024;}'`.to_i > size
end
def ensure_backups_enabled
raise Discourse::InvalidAccess.new unless SiteSetting.enable_backups?
end
def valid_extension?(filename)
/\.(tar\.gz|t?gz)$/i =~ filename
end
def valid_filename?(filename)
!!(/^[a-zA-Z0-9\._\-]+$/ =~ filename)
end
def render_error(message_key)
render json: failed_json.merge(message: I18n.t(message_key))
end
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end