Michael Chus
143d217397
Implements complete offline-first architecture with SQLite caching and MariaDB synchronization. Key features: - Local SQLite database for offline operation (data/quoteforge.db) - Connection settings with encrypted credentials - Component and pricelist caching with auto-sync - Sync API endpoints (/api/sync/status, /components, /pricelists, /all) - Real-time sync status indicator in UI with auto-refresh - Offline mode detection middleware - Migration tool for database initialization - Setup wizard for initial configuration New components: - internal/localdb: SQLite repository layer (components, pricelists, sync) - internal/services/sync: Synchronization service - internal/handlers/sync: Sync API handlers - internal/handlers/setup: Setup wizard handlers - internal/middleware/offline: Offline detection - cmd/migrate: Database migration tool UI improvements: - Setup page for database configuration - Sync status indicator with online/offline detection - Warning icons for pending synchronization - Auto-refresh every 30 seconds Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
package localdb
|
|
|
|
import (
|
|
"crypto/aes"
|
|
"crypto/cipher"
|
|
"crypto/rand"
|
|
"crypto/sha256"
|
|
"encoding/base64"
|
|
"errors"
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
// getEncryptionKey derives a 32-byte key from environment variable or machine ID
|
|
func getEncryptionKey() []byte {
|
|
key := os.Getenv("QUOTEFORGE_ENCRYPTION_KEY")
|
|
if key == "" {
|
|
// Fallback to a machine-based key (hostname + fixed salt)
|
|
hostname, _ := os.Hostname()
|
|
key = hostname + "quoteforge-salt-2024"
|
|
}
|
|
// Hash to get exactly 32 bytes for AES-256
|
|
hash := sha256.Sum256([]byte(key))
|
|
return hash[:]
|
|
}
|
|
|
|
// Encrypt encrypts plaintext using AES-256-GCM
|
|
func Encrypt(plaintext string) (string, error) {
|
|
if plaintext == "" {
|
|
return "", nil
|
|
}
|
|
|
|
key := getEncryptionKey()
|
|
block, err := aes.NewCipher(key)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
gcm, err := cipher.NewGCM(block)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
nonce := make([]byte, gcm.NonceSize())
|
|
if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
ciphertext := gcm.Seal(nonce, nonce, []byte(plaintext), nil)
|
|
return base64.StdEncoding.EncodeToString(ciphertext), nil
|
|
}
|
|
|
|
// Decrypt decrypts ciphertext that was encrypted with Encrypt
|
|
func Decrypt(ciphertext string) (string, error) {
|
|
if ciphertext == "" {
|
|
return "", nil
|
|
}
|
|
|
|
key := getEncryptionKey()
|
|
data, err := base64.StdEncoding.DecodeString(ciphertext)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
block, err := aes.NewCipher(key)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
gcm, err := cipher.NewGCM(block)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
nonceSize := gcm.NonceSize()
|
|
if len(data) < nonceSize {
|
|
return "", errors.New("ciphertext too short")
|
|
}
|
|
|
|
nonce, ciphertextBytes := data[:nonceSize], data[nonceSize:]
|
|
plaintext, err := gcm.Open(nil, nonce, ciphertextBytes, nil)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return string(plaintext), nil
|
|
}
|