forked from wrenn/wrenn
pptx704
84dd15d22b
Implement a channels system for notifying teams via external providers
(Discord, Slack, Teams, Google Chat, Telegram, Matrix, webhook) when
lifecycle events occur (capsule/template/host state changes).
- Channel CRUD API under /v1/channels (JWT-only auth)
- Test endpoint to verify config before saving (POST /v1/channels/test)
- Secret rotation endpoint (PUT /v1/channels/{id}/config)
- AES-256-GCM encryption for provider secrets (WRENN_ENCRYPTION_KEY)
- Redis stream event publishing from audit logger
- Background dispatcher with consumer group and retry (10s, 30s)
- Webhook delivery with HMAC-SHA256 signing (X-WRENN-SIGNATURE)
- shoutrrr integration for chat providers
- Secrets never exposed in API responses
64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
package channels
|
|
|
|
import (
|
|
"crypto/aes"
|
|
"crypto/cipher"
|
|
"crypto/rand"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"io"
|
|
)
|
|
|
|
// EncryptSecret encrypts plaintext using AES-256-GCM with a random nonce.
|
|
// Returns base64(nonce || ciphertext).
|
|
func EncryptSecret(key [32]byte, plaintext string) (string, error) {
|
|
block, err := aes.NewCipher(key[:])
|
|
if err != nil {
|
|
return "", fmt.Errorf("aes cipher: %w", err)
|
|
}
|
|
|
|
gcm, err := cipher.NewGCM(block)
|
|
if err != nil {
|
|
return "", fmt.Errorf("gcm: %w", err)
|
|
}
|
|
|
|
nonce := make([]byte, gcm.NonceSize())
|
|
if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
|
|
return "", fmt.Errorf("nonce: %w", err)
|
|
}
|
|
|
|
ciphertext := gcm.Seal(nonce, nonce, []byte(plaintext), nil)
|
|
return base64.StdEncoding.EncodeToString(ciphertext), nil
|
|
}
|
|
|
|
// DecryptSecret decrypts a value produced by EncryptSecret.
|
|
func DecryptSecret(key [32]byte, encoded string) (string, error) {
|
|
data, err := base64.StdEncoding.DecodeString(encoded)
|
|
if err != nil {
|
|
return "", fmt.Errorf("base64 decode: %w", err)
|
|
}
|
|
|
|
block, err := aes.NewCipher(key[:])
|
|
if err != nil {
|
|
return "", fmt.Errorf("aes cipher: %w", err)
|
|
}
|
|
|
|
gcm, err := cipher.NewGCM(block)
|
|
if err != nil {
|
|
return "", fmt.Errorf("gcm: %w", err)
|
|
}
|
|
|
|
nonceSize := gcm.NonceSize()
|
|
if len(data) < nonceSize {
|
|
return "", fmt.Errorf("ciphertext too short")
|
|
}
|
|
|
|
nonce, ciphertext := data[:nonceSize], data[nonceSize:]
|
|
plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
|
|
if err != nil {
|
|
return "", fmt.Errorf("decrypt: %w", err)
|
|
}
|
|
|
|
return string(plaintext), nil
|
|
}
|