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// Copyright 2024 The Update Framework Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License
//
// SPDX-License-Identifier: Apache-2.0
//
package simulator
import (
"log/slog"
"os"
"path/filepath"
"time"
)
var (
MetadataURL = "https://jku.github.io/tuf-demo/metadata"
TargetsURL = "https://jku.github.io/tuf-demo/targets"
MetadataDir string
RootBytes []byte
PastDateTime time.Time
Sim *RepositorySimulator
metadataPath = "/metadata"
targetsPath = "/targets"
LocalDir string
DumpDir string
)
func InitLocalEnv() error {
tmp := os.TempDir()
tmpDir, err := os.MkdirTemp(tmp, "0750")
if err != nil {
slog.Error("Failed to create temporary directory", "err", err)
os.Exit(1)
}
if err = os.Mkdir(filepath.Join(tmpDir, metadataPath), 0750); err != nil {
slog.Error("Repository simulator: failed to create dir", "err", err)
}
if err = os.Mkdir(filepath.Join(tmpDir, targetsPath), 0750); err != nil {
slog.Error("Repository simulator: failed to create dir", "err", err)
}
LocalDir = tmpDir
return nil
}
func InitMetadataDir() (*RepositorySimulator, string, string, error) {
if err := InitLocalEnv(); err != nil {
slog.Error("Failed to initialize environment", "err", err)
os.Exit(1)
}
metadataDir := filepath.Join(LocalDir, metadataPath)
sim := NewRepository()
f, err := os.Create(filepath.Join(metadataDir, "root.json"))
if err != nil {
slog.Error("Failed to create root", "err", err)
os.Exit(1)
}
defer f.Close()
if _, err = f.Write(sim.SignedRoots[0]); err != nil {
slog.Error("Repository simulator setup: failed to write signed roots", "err", err)
}
targetsDir := filepath.Join(LocalDir, targetsPath)
sim.LocalDir = LocalDir
return sim, metadataDir, targetsDir, err
}
func GetRootBytes(localMetadataDir string) ([]byte, error) {
return os.ReadFile(filepath.Join(localMetadataDir, "root.json"))
}
func RepositoryCleanup(tmpDir string) {
slog.Info("Cleaning temporary directory", "dir", tmpDir)
os.RemoveAll(tmpDir)
}
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